JP5698459B2 - Hinge - Google Patents

Description

  The present invention relates to a hinge that connects a second connection object to a first connection object so as to be openable and closable, for example, to connect a document crimping plate of the office equipment to the main body of the office equipment.

2. Description of the Related Art Conventionally, many office machines used in offices such as copying machines, facsimile machines, scanners, and the like have a document reading section (contact glass) on the upper surface of the main body and a document crimping plate that covers the document reading section. .
The document crimping plate is used for bringing the document placed on the document reading unit into close contact with the document reading unit and holding the position of the document with respect to the document reading unit. It is rotatably connected to the end of the upper surface of the main body of the device.

Such a document pressing plate requires a certain amount of weight in order to bring the document into close contact with the document reading unit. In addition, when the original cover is provided with an automatic document feeder (ADF), the weight of the original cover is further increased.
Therefore, the hinge that connects the main body of the conventional office machine and the document crimping plate is disposed between the attachment member fixed to the main body of the office device, the support member fixed to the document crimping plate, and these members. And by supporting the weight of the original pressure plate with the biasing force of the spring, the rotation angle (opening / closing angle) of the original pressure plate with respect to the main body of the office equipment is held at an arbitrary angle, and thus work. This facilitates the operation of placing the document on the document reading unit by rotating (opening / closing) the document crimping plate. For example, as described in Patent Document 1.

Also, in the field of office equipment, according to consumer needs (α) “the document pressing plate is equipped with an automatic document feeder” and (β) “the document crimping plate is not equipped with an automatic document feeder. There are cases in which both of the "things" are manufactured.
In this case, the apparatus configuration on the main body side of the (α) and (β) office equipment is almost the same, but the weight of the automatic document feeder is quite heavy (it cannot be ignored with respect to the weight of the original pressure plate).
Therefore, the rotational force (torque) acting on the hinge is greatly different between (α) and (β) due to the weight of the original cover (or the original cover and the automatic document feeder).
Therefore, in both cases (α) and (β) with the same hinge, “the rotational force acting on the hinge due to the weight of the original pressure plate (or the original pressure plate and the automatic document feeder combined)” ”And“ Rotational force acting on the hinge due to the biasing force of the spring ”, and thus it is difficult to hold the rotation angle (opening / closing angle) of the original cover against the main body of the office equipment at an arbitrary angle. It is.

As one method of solving the above problem, two types of springs having different urging forces are prepared, and one of the two types of springs is incorporated in a hinge corresponding to (α), and the other corresponds to (β). A method of incorporating into the hinge is conceivable.
However, with this method, it is necessary to perform a work for incorporating different types of springs into the hinges according to the specifications of the office equipment (whether or not an automatic document feeder is present) at the site where the office equipment is manufactured. Become.
In addition, the number (type) of parts that must be managed at the site where office equipment is manufactured increases and management becomes complicated (management costs increase).

Also, the user (purchaser) of the office equipment purchases the automatic document feeder later and assembles it to the office equipment for reasons such as changes in the usage status of the office equipment. in some cases.
In such a case, an operation of removing the hinge from the office equipment, disassembling the hinge and incorporating another type of spring (changing the spring) is required, which is very complicated.

  As a method of solving the above problem, a method of providing a hinge with a mechanism for adjusting the biasing force of the spring (biasing force adjusting mechanism) is conceivable. As hinges provided with such a mechanism, the hinges described in Patent Documents 2 to 4 are known.

A hinge (document crimping plate opening / closing device) described in Patent Document 2 is provided with an attachment member attached to a main body of an office device, a support member rotatably attached to the attachment member, and indicating the document crimping plate, and an attachment member. A pair of sliders slidably provided between the support member and a compression that is accommodated in the pair of sliders and that presses the pair of sliders against the attachment member and the support member to urge the original pressure plate in the opening direction. A spring is provided, and at least one of the pair of sliders is provided with elasticity adjusting means for adjusting the elasticity of the compression spring, and the elasticity adjusting means is rotatably provided in one slider and has an adjustment portion extending into the compression spring. Operation plate and adjustment of operation plate An adjustment plate that is provided so as to be movable in the axial direction and does not rotate around the axis and that is in contact with the end of the compression spring, and an operation that is provided on the operation plate and exposed to the outside through a through hole provided in one slider Part.
When the operator operates the operation portion by inserting a tool or a finger into the through hole from the outside of one slider of the hinge (document pressure plate opening / closing device) described in Patent Document 2, the operation plate rotates, and substantially The adjustment plate screwed to the adjustment portion of the operation plate moves in the longitudinal direction of the compression spring (in the direction of expansion / contraction).
As a result, the overall length of the compression spring when the support member forms a certain rotation angle with respect to the attachment member is changed, and consequently the elasticity of the compression spring is adjusted.

A hinge (hinge device) described in Patent Literature 3 is attached to an apparatus main body, a support member that is rotatably attached to the attachment member via a hinge pin, and supports the original cover. A compression spring that is provided between the member and a damper that is housed in the compression spring and that has a base swingably attached to one or both of the attachment member and the free end of the support member. The adjustment plate is attached to the damper so as to be movable in the axial direction, and a compression spring is provided between the adjustment plate and the support member or the attachment member.
When the operator rotates the damper of the hinge (hinge device) described in Patent Document 3 using a tool or the like, the damper rotates, and the adjustment plate substantially screwed to the damper is in the longitudinal direction of the compression spring. Move in the direction of expansion / contraction.
As a result, the overall length of the compression spring when the support member forms a certain rotation angle with respect to the attachment member is changed, and consequently the elasticity of the compression spring is adjusted.

The hinge described in Patent Document 4 includes a movable member fixed to the automatic document feeder, a stationary member fixed to the apparatus main body and rotatably connected to the movable member, and a pair of housings accommodated in the movable member. A housing (slider), a spring disposed between the pair of housings, and an adjustment screw for regulating the position of the one housing with respect to the movable member.
The adjustment screw is screwed to the movable member, and the position of one housing relative to the movable member (position in the longitudinal direction of the spring) is changed by rotating the adjustment screw using a tool.
As a result, the total length of the spring when the movable member forms a certain rotation angle with respect to the stationary member is changed, and the elasticity of the spring is adjusted accordingly.

Each of the hinges described in Patent Document 2 to Patent Document 4 substantially has “another member (the spring biasing force is applied) between the“ one end of the spring ”and the“ member supporting the one end of the spring ”. "Members that make up the adjusting mechanism)" are placed, "Another member" is screwed into "Member supporting one end of spring", and "Another member" becomes "Member supporting one end of spring" By rotating relatively, the “other member” moves relative to the “member that supports one end of the spring”, and as a result, the total length of the spring is changed.
The hinges described in Patent Document 2 to Patent Document 4 can adjust the biasing force of the spring without performing an operation of removing the hinge from an object such as office equipment or replacing the spring.

However, the biasing force adjustment mechanism in the hinges described in Patent Literature 2 to Patent Literature 4 finely adjusts the change in the biasing force of the spring due to deterioration over time of the spring, or the spring resulting from the assembly accuracy of the members constituting the hinge, etc. The purpose is to finely adjust the biasing force of the spring, such as finely adjusting the variation of the biasing force.
Therefore, it cannot be applied to a case where the biasing force of the spring is significantly changed according to the presence or absence of the ADF provided on the original cover. Alternatively, even if it can be applied, the “other member” must be rotated by a considerably large angle (for example, several rotations, ten rotations, etc.) with respect to the “member that supports one end of the spring”. Therefore, the work becomes complicated.

Further, in the case of the hinges described in Patent Document 2 to Patent Document 4, the elastic force (biasing force) of the spring is always “another member” and “a member that supports one end of the spring while the spring is attached to the hinge. ”Acts on the portion (thread) where it is screwed.
Therefore, a large force is required to rotate the “other member” relative to the “member that supports one end of the spring”.

The hinge (hinge device) described in Patent Document 5 is supported by first and second attachment members that are coupled by a rotation shaft so as to be relatively rotatable, and one end is supported by the first attachment member. The other end is supported by the second mounting member, and the buffer member is telescopic and swingable according to the rotation of the mounting member, and the rotation is connected to at least one end of the buffer member and rotates according to the swinging motion of the buffer member. And a friction member that contacts the rotating member and brakes the swinging motion of the buffer member.
In addition, among the first and second mounting members that support the rotating member, a member (push table 26) in which a pair of slit-like bearings composed of a pair of elongated holes is formed is rotatable. Supported by Both ends of the rotating member are respectively locked to a pair of slit bearings so as to be rotatable and movable in the longitudinal direction of the slit bearings.
The member formed with the pair of slit bearings rotates with respect to the first and second mounting members that support the rotating member, thereby connecting the axis of the rotating member and the axis of the friction member; The angle (θ2) formed by the longitudinal direction of the pair of slit bearings changes, and the total length of the spring (buffer member) changes when the second mounting member forms a rotation angle with respect to the first mounting member. As a result, the elasticity of the spring is adjusted.

However, in the hinge described in Patent Document 5, the buffer member (spring) swings when the first and second mounting members relatively rotate, and protrudes outside the first and second mounting members. To do.
The presence of a member that protrudes outside the hinge according to the rotation angle of the hinge is not preferable from the viewpoint of preventing interference with other members.

JP 2007-212910 A JP 2009-58790 A JP 2004-101620 A JP 2002-202640 A Japanese Patent Laid-Open No. 10-220093

The present invention has been made in view of the above situation.
That is, the problem to be solved by the present invention is that the urging member is attached without the operation of removing the urging member from the objects to be connected (the first linking object and the second linking object) or replacing the urging member. It is to provide a hinge capable of easily adjusting the power.

  Hereinafter, means for solving the above problems will be described.

That is, in claim 1,
A first wing member fixed to the first connection object;
A cam member supported by the first wing member;
A second wing member that is pivotally coupled to the first wing member and fixed to the second coupling object;
A slide member movable in a direction approaching the cam member and a direction away from the cam member while being supported by the second wing member;
A biasing member for biasing the slide member against the cam member by biasing the slide member in a direction approaching the cam member;
Comprising
The cam member can change and fix the distance from the opposite end of the biasing member in the axial direction of the biasing member when the second wing member and the first wing member are closest to each other. Supported by the first wing member ,
The cam member is
A contact member having both end portions penetrating into a pair of first elongated holes formed in the first wing member, and a contact surface which is a surface contacting the slide member formed in the middle portion;
A movable member supported to be movable in a predetermined movement direction with respect to the first wing member, a pair of second long holes are formed, and the pair of second long holes are inserted into the contact member; ,
A moving position adjusting member capable of changing a moving position that is a position in the moving direction of the moving member with respect to the first wing member and fixing the moving member to the first wing member;
Comprising
The longitudinal direction of the pair of first elongated holes, the longitudinal direction of the pair of second elongated holes, and the moving direction are all perpendicular to the axial direction of the rotation axis of the second wing member with respect to the first wing member. And
The longitudinal direction of the pair of second long holes is inclined with respect to the moving direction,
The longitudinal direction of the pair of first elongated holes is inclined with respect to the longitudinal direction of the pair of second elongated holes .

In claim 2 ,
The moving position adjusting member is
Screwed to one of the first wing member or the moving member,
The other of the first wing member or the moving member is supported so as not to be relatively movable in the axial direction of the moving position adjusting member and to be rotatable around the axis of the moving position adjusting member,
The axial direction of the moving position adjusting member is parallel to the moving direction.

In claim 3 ,
When the second wing member is rotated by a predetermined angle or more in the opening direction with respect to the first wing portion with reference to the time when the second connection object is closed with respect to the first connection object, By contacting the slide member, the slide member is restricted from moving in a direction approaching the cam member, and includes a slide restricting member that separates the slide member from the cam member.

In claim 4 ,
The slide regulating member is
It also serves as a rotation axis of the second wing member with respect to the first wing member.

In claim 5,
A first wing member fixed to the first connection object;
A cam member supported by the first wing member;
A second wing member that is pivotally coupled to the first wing member and fixed to the second coupling object;
A slide member movable in a direction approaching the cam member and a direction away from the cam member while being supported by the second wing member;
A biasing member for biasing the slide member against the cam member by biasing the slide member in a direction approaching the cam member;
Comprising
The cam member can change and fix the distance from the opposite end of the biasing member in the axial direction of the biasing member when the second wing member and the first wing member are closest to each other. Supported by the first wing member,
The cam member is
A pair of arm members rotatably coupled to the first wing member at one end;
Both ends are supported by the other ends of the pair of arm members, and a contact member in which a contact surface that is a surface that contacts the slide member is formed in the middle part;
An arm angle adjusting member for fixing the pair of arm members to the first wing member so that the arm angle, which is the rotation angle of the pair of arm members with respect to the first wing member, can be changed and fixed;
It comprises.

In claim 6 ,
The arm angle adjusting member is
In the first wing member, the first wing member is inserted into one of a plurality of wing side through holes formed at a position equidistant from the rotation center of the pair of arm members, and formed in the pair of arm members. It is the pin penetrated by the arm member side through-hole.

In claim 7 ,
The first wing member is formed with an arcuate support surface centering on a rotation axis of the pair of arm members with respect to the first wing member,
The abutting member abuts on the support surface.

In claim 8 ,
The support surface is an inner peripheral surface of a support hole that is an arc-shaped long hole centered on the arm axis,
The contact member is inserted into the support hole.

In claim 9 ,
When the second wing member is rotated by a predetermined angle or more in the opening direction with respect to the first wing portion with reference to the time when the second connection object is closed with respect to the first connection object, By contacting the slide member, the slide member is restricted from moving in a direction approaching the cam member, and includes a slide restricting member that separates the slide member from the cam member.

In claim 10 ,
The slide regulating member is
It also serves as a rotation axis of the second wing member with respect to the first wing member.

In claim 11,
A first wing member fixed to the first connection object;
A cam member supported by the first wing member;
A second wing member that is pivotally coupled to the first wing member and fixed to the second coupling object;
A slide member movable in a direction approaching the cam member and a direction away from the cam member while being supported by the second wing member;
A biasing member for biasing the slide member against the cam member by biasing the slide member in a direction approaching the cam member;
Comprising
The cam member can change and fix the distance from the opposite end of the biasing member in the axial direction of the biasing member when the second wing member and the first wing member are closest to each other. Supported by the first wing member,
The cam member is
Both end portions are supported by the first wing member, and a contact member in which a contact surface that is a surface that contacts the slide member is formed in the middle portion;
A rotation angle changing member capable of changing a rotation angle around the cam shaft of the contact member with respect to the first wing member and fixing the rotation angle around the cam shaft after the change;
Comprising
The cam shaft is parallel to the rotation axis of the second wing member relative to the first wing member.

In claim 12 ,
The rotation angle changing member is detachably fitted in a fitting hole formed in the first wing member,
The contact member is fixed to the rotation angle changing member,
The rotation angle changing member is fitted in a fitting hole formed in the first wing member, a locking surface formed in the rotation angle changing member, and a fitting surface which is an inner peripheral surface of the fitting hole; The rotation angle changing member is fixed to the first wing member so as not to be relatively rotatable at two or more different rotation angles around the cam shaft.
When the rotation angle changing member is fitted in a fitting hole formed in the first wing member, the contact member is in contact with the first wing member at every two or more different rotation angles around the cam shaft. Are arranged at different positions.

In claim 13 ,
The rotation angle changing member and the contact member are integrally formed.

In claim 14 ,
The rotation angle changing member is detachably fitted in a fitting hole formed in the first wing member,
The abutting member has an axial direction parallel to the cam shaft when the rotation angle changing member is fitted in the fitting hole, and is rotatable about another axis shifted from the cam shaft. It is pivotally supported by the angle change member,
The rotation angle changing member is fitted in a fitting hole formed in the first wing member, a locking surface formed in the rotation angle changing member, and a fitting surface which is an inner peripheral surface of the fitting hole; The rotation angle changing member is fixed to the first wing member so as not to be relatively rotatable at two or more different rotation angles around the cam shaft.
When the rotation angle changing member is fixed to the first wing member, the contact member is disposed at a different position with respect to the first wing member at every two or more different rotation angles around the cam shaft. It is.

In claim 15 ,
The contact member is pivotally supported by the first wing member so as to be rotatable around the cam shaft,
The rotation angle changing member is
A worm wheel fixed to the abutting member so as not to be relatively rotatable;
A worm rotatably supported by the first wing member and meshing with the worm wheel;
It comprises.

In claim 16 ,
When the second wing member is rotated by a predetermined angle or more in the opening direction with respect to the first wing portion with reference to the time when the second connection object is closed with respect to the first connection object, By contacting the slide member, the slide member is restricted from moving in a direction approaching the cam member, and includes a slide restricting member that separates the slide member from the cam member.

In claim 17 ,
The slide regulating member is
It also serves as a rotation axis of the second wing member with respect to the first wing member.

  The present invention has an effect that it is possible to easily adjust the urging force of the urging member without performing an operation of removing the object to be connected or replacing the urging member.

The right view which shows the multifunctional machine which comprises 4th embodiment from 1st embodiment of the hinge based on this invention. The perspective view which shows 1st embodiment of the hinge which concerns on this invention. The right view which shows 1st embodiment of the hinge which concerns on this invention. The right side sectional view showing a first embodiment of the hinge concerning the present invention. The perspective view which shows the lower fixing member of 1st embodiment of the hinge which concerns on this invention. The perspective view which shows the intermediate member of 4th embodiment from 1st embodiment of the hinge which concerns on this invention. The perspective view which shows the upper fixing member of 4th embodiment from 1st embodiment of the hinge which concerns on this invention. The perspective view which shows the 1st slider of 4th embodiment from 1st embodiment of the hinge which concerns on this invention. The perspective view which shows the 2nd slider of 4th embodiment from 1st embodiment of the hinge which concerns on this invention. The perspective view which shows the cam member of 1st embodiment of the hinge which concerns on this invention. The perspective view which shows the contact member of 1st embodiment of the hinge which concerns on this invention. The perspective view which shows the moving member of 1st embodiment of the hinge which concerns on this invention. (A) The perspective view which shows the movement position adjustment screw of 1st embodiment of the hinge concerning this invention, (b) The perspective view which shows the nut of 1st embodiment of the hinge concerning this invention. (A) Right side sectional view showing the cam member of the first embodiment of the hinge according to the present invention when the contact member is moved forward and downward, (b) The present invention when the contact member is moved rearward and upward The right side sectional view showing the cam member of the first embodiment of the hinge concerning. The right side sectional view showing the first embodiment of the hinge concerning the present invention when it is closed. The right side sectional view showing the first embodiment of the hinge concerning the present invention when performing maintenance. The right view which shows 2nd embodiment of the hinge which concerns on this invention. The right side sectional view showing a second embodiment of the hinge concerning the present invention. The perspective view which shows the lower fixing member of 2nd embodiment of the hinge which concerns on this invention. The perspective view which shows the cam member of 2nd embodiment of the hinge which concerns on this invention. (A) A perspective view showing a pair of arm members, an arm shaft member, and a contact member of a second embodiment of the hinge according to the present invention, (b) an arm angle adjustment pin of the second embodiment of the hinge according to the present invention. FIG. (A) Right side sectional view showing the cam member of the second embodiment of the hinge according to the present invention when the contact member moves forward and downward, (b) The present invention when the contact member moves rearward and upward Sectional drawing on the right side which shows the cam member of 2nd embodiment of the hinge which concerns on. The right side sectional view showing a second embodiment of the hinge concerning the present invention when it is closed. The right side sectional view showing a second embodiment of the hinge concerning the present invention when performing maintenance. Sectional drawing on the right side which shows another embodiment of the lower fixing member in 2nd embodiment of the hinge which concerns on this invention. The right view which shows 3rd embodiment of the hinge which concerns on this invention. The right side sectional view showing a third embodiment of the hinge concerning the present invention. The perspective view which shows the lower fixing member of 3rd embodiment of the hinge which concerns on this invention. The perspective view which shows the cam member of 3rd embodiment of the hinge which concerns on this invention. The perspective view which shows the contact member of 3rd embodiment and 4th embodiment of the hinge which concerns on this invention. (A) The front view which shows the contact member of 3rd embodiment and 4th embodiment of the hinge which concerns on this invention, (b) The contact member of 3rd embodiment and 4th embodiment of the hinge which concerns on this invention The right view shown. The perspective view which shows the fitting member of 3rd embodiment of the hinge which concerns on this invention. (A) The front view which shows the left fitting member of 3rd embodiment of the hinge concerning this invention, (b) The right view which shows the left fitting member of 3rd embodiment of the hinge concerning this invention. (A) Right side sectional view showing the cam member of the third embodiment of the hinge according to the present invention when the contact member is moved forward and downward, (b) The present invention when the contact member is moved forward and upward Sectional drawing on the right side which shows the cam member of 3rd embodiment of the hinge which concerns on. The right side sectional view showing a third embodiment of the hinge concerning the present invention when closed. The right side sectional view showing a third embodiment of the hinge concerning the present invention when performing maintenance. The right view which shows 4th embodiment of the hinge which concerns on this invention. The right side sectional view showing a fourth embodiment of the hinge concerning the present invention. The perspective view which shows the lower fixing member of 4th embodiment of the hinge which concerns on this invention. The perspective view which shows the cam member of 4th embodiment of the hinge which concerns on this invention. The perspective view which shows the pivotal support member of 4th embodiment of the hinge which concerns on this invention. (A) The front view which shows the pivotal support member of 4th embodiment of the hinge which concerns on this invention, (b) The right view which shows the pivotal support member of 4th embodiment of the hinge which concerns on this invention. The perspective view which shows the worm wheel of 4th embodiment of the hinge which concerns on this invention. (A) The front view which shows the worm wheel of 4th embodiment of the hinge which concerns on this invention, (b) The left view which shows the worm wheel of 4th embodiment of the hinge which concerns on this invention. The perspective view which shows the worm | warm of 4th embodiment of the hinge which concerns on this invention. (A) Right side view showing the cam member of the fourth embodiment of the hinge according to the present invention when the contact member moves forward and downward, (b) The present invention when the contact member moves forward and upward The right view which shows the cam member of 4th embodiment of the hinge which concerns. Sectional drawing on the right side showing a fourth embodiment of the hinge according to the present invention when closed. Sectional drawing on the right side showing a fourth embodiment of the hinge according to the present invention when performing maintenance.

Hereinafter, a multifunction machine 1 that is an embodiment of an office machine will be described with reference to FIG.
The multi-function device 1 includes a main body 2 and an original cover 3.
The multifunction device 1 includes any one of the hinge 100, the hinge 200, the hinge 300, and the hinge 400.

The main body 2 is an embodiment of the first connection object according to the present invention.
The main body 2 includes a document reading device, a control device, a printing device, a display device, and an input device.
The document reading device is disposed on the upper surface of the main body 2. The document reading device reads a document placed on the upper surface of the main body 2 (generates image information of the document).
The control device controls the operation of each unit of the multi-function device 1, more specifically, the operation of the document reading device, the printing device described later, and the ADF described later.
Further, the control device can store the image information generated by the document reading device and the image information acquired through a line (Internet line or the like) connected to the main body 2.
The printing apparatus is disposed below the document reading apparatus. The printing device prints an image on a predetermined sheet based on the image information stored by the control device.
The display device is composed of a liquid crystal panel, for example, and displays information related to the operation status of the multifunction device 1.
The input device includes, for example, a button, a switch, and the like, and is operated when an operator inputs an instruction or the like to the multifunction machine 1. The display device and the input device are disposed on the front surface of the main body 2.

The original cover 3 is an embodiment of the second connection object according to the present invention.
The document crimping plate 3 presses (crimps) the document placed on the document reading device toward the document reading device, so that the document moves when the document reading device reads the document (relative to the document reading device). Change of the general position).
The document pressing plate 3 includes a document storage tray before reading, an ADF (Auto Document Feeder), and a document storage tray after reading.
The ADF sequentially takes out a plurality of documents stored in a stacked state in a document storage tray before reading one by one and places them on a predetermined reading position on the document reading device. After the reading of the original by the original reading device is completed, the ADF conveys the original placed on the reading position to the original receiving tray after reading.

“Office equipment” refers to an apparatus having at least a function of reading a document (acquiring image information of the document).
Specific examples of office equipment include: (a) a scanner having a function of reading a document and a function of transmitting image information relating to the read document to another device (for example, a personal computer); (b) a function of reading a document; A fax machine having a function of transmitting image information related to a read document to another device via a communication line and a function of printing out image information acquired from the other device; (c) a function of reading the document and the read document A copying machine having a function of printing out image information according to the above, and (d) a multifunction machine that also functions as a scanner, a fax machine, and a copying machine.

The hinge 100, the hinge 200, the hinge 300, and the hinge 400, which will be described in detail below, are all used for connecting the document crimping plate 3 to the main body 2 of the multifunction machine 1 so as to be openable and closable (rotatable). The use of such a hinge is not limited to this.
That is, the hinge according to the present invention can be widely applied to “use of connecting one member (first connection object) of the two members to the other member (second connection object) so as to be opened and closed”. is there.
Specific examples of other applications to which the hinge according to the present invention is applied include applications in which a hatch (lid) for exchanging a toner cartridge is connected to the main body of an office device so as to be openable and closable, and a hood can be opened and closed in a car body. Use for connecting to the toilet, use for connecting the toilet seat to the toilet bowl so as to be opened and closed, and the like.

  In the following description, the rotation angle θ of the original cover 3 when the original cover 3 is closed (when the lower surface of the original cover 3 is in contact with the upper surface of the main body 2) (more precisely, the main body When the rotation angle θ of the original cover 3 with respect to 2 is set to “0 °” and the original cover 3 is rotated in the opening direction, the rotation angle θ increases (the rotation angle θ becomes positive). The rotation angle θ of the original cover 3 is defined as follows (see FIGS. 1 and 15).

Below, the hinge 100 which is 1st embodiment of the hinge based on this invention is demonstrated using FIGS. 1-16.
As shown in FIG. 1, the hinge 100 connects the original cover 3 to the main body 2 of the multifunction machine 1 so as to be rotatable.
As shown in FIGS. 2 to 4 and 10, the hinge 100 includes a lower fixing member 110, an intermediate member 20, a first rotation pin 71, a pair of bearings 74 and 74, an upper fixing member 30, and a second rotation pin 72. , A pressure receiving pin 73, a first slider 40, a second slider 50, a pair of springs 60 and 60, and a cam member 180.
In the following, for the sake of convenience, when the original cover 3 is closed with respect to the main body 2 (when the rotation angle θ = 0 °), the vertical direction, the front / rear direction, and the left / right direction of the multifunction machine 1 are used as references (the original cover 3 The shape of each member constituting the hinge 100 is such that the vertical direction, the front-rear direction, and the left-right direction of the multifunction machine 1 when the is closed with respect to the main body 2 correspond to the vertical direction, front-rear direction, and left-right direction of the hinge 100, respectively. Will be explained.

A lower fixing member 110 shown in FIG. 5 is an embodiment of the first wing member according to the present invention.
The lower fixing member 110 of the present embodiment is formed by appropriately bending a single metal plate.
The lower fixing member 110 includes a bottom plate 111, a left side plate 112L, a right side plate 112R, and a back plate 116.

  The bottom plate 111 is a plate-like member that forms the lower part of the lower fixing member 110. The bottom plate 111 has a pair of upper and lower plate surfaces. The shape of the bottom plate 111 is a generally rectangular shape that is slightly long in the front-rear direction in plan view.

  A through-hole 111a is formed in the front end portion of the bottom plate 111 and at the left and right central portions. The through hole 111 a passes through a pair of upper and lower plate surfaces of the bottom plate 111.

  An engagement hole 111b is formed in the bottom half 111 of the bottom plate and the left half. The engagement hole 111 b penetrates a pair of upper and lower plate surfaces of the bottom plate 111. The engagement hole 111b has a shape in which a first through hole and a second through hole having a smaller diameter than the first through hole are connected in the front-rear direction.

  In the present embodiment, an engagement protrusion (not shown) protruding upward from the rear upper surface of the main body 2 of the multifunction machine 1 is engaged with the engagement hole 111b, and a screw (not shown) is inserted into the through hole 111a. By screwing the screw into a screw hole formed in the upper rear portion of the main body 2, the bottom plate 111 and thus the lower fixing member 110 are fixed to the main body 2 (see FIG. 1).

  The left side plate 112 </ b> L is a plate-like member that forms the left side portion of the lower fixing member 110. The left side plate 112L has a pair of left and right plate surfaces. The left side plate 112L has a shape like a staircase that is generally forwardly lowered in a side view. The lower end portion of the left side plate 112L is connected to the left end portion of the bottom plate 111 (the bottom plate 111 and the left side plate 112L are formed by bending one metal plate at a right angle).

  A through hole 113L is formed at the rear upper end of the left side plate 112L. The through hole 113L penetrates a pair of left and right plate surfaces of the left side plate 112L.

  A first elongated hole 114L is formed in a portion of the left side plate 112L that is in front of and below the through hole 113L. The first long hole 114L penetrates a pair of left and right plate surfaces of the left side plate 112L. The first long hole 114L has a shape extending from the rear upper side to the front lower side in a side view (the longitudinal direction of the first long hole 114L is a direction from the rear upper side to the front lower side).

  A through hole 115L is formed in a portion of the left side plate 112L that is located below the through hole 113L. The through hole 115L penetrates a pair of left and right plate surfaces of the left side plate 112L. The shape of the through hole 115L is a rectangular shape that is elongated in the vertical direction in a side view.

  The right side plate 112 </ b> R is a plate-like member that forms the right side portion of the lower fixing member 110. The right side plate 112R has a pair of left and right plate surfaces. The right side plate 112R has a shape like a staircase that is generally forwardly lowered in a side view. The lower end portion of the right side plate 112R is connected to the right end portion of the bottom plate 111 (the bottom plate 111 and the right side plate 112R are formed by bending one metal plate at a right angle).

  A through hole 113R is formed at the rear upper end of the right side plate 112R. The through hole 113R passes through the pair of left and right plate surfaces of the right side plate 112R.

  A first long hole 114R is formed in a portion of the right side plate 112R that is in front of and below the through hole 113R. The first long hole 114R passes through a pair of left and right plate surfaces of the right side plate 112R. The first long hole 114R has a shape extending from the rear upper side to the front lower side (the longitudinal direction of the first long hole 114R is the direction from the rear upper side to the front lower side).

The longitudinal direction of the first elongated hole 114R is parallel to the longitudinal direction of the first elongated hole 114L.
Further, the first long hole 114L and the first long hole 114R coincide (overlap) in a side view.

  A through hole 115R is formed in a portion of the right side plate 112R that is located below the through hole 113R. The through hole 115R penetrates a pair of left and right plate surfaces of the right side plate 112R. The shape of the through-hole 115R is a rectangular shape that is elongated in the vertical direction in a side view.

The back plate 116 is a plate-like member that forms the rear portion of the lower fixing member 110. The back plate 116 has a pair of front and rear plate surfaces. The shape of the back plate 116 is a generally rectangular shape that is slightly long in the left-right direction when viewed from the front.
The lower end of the back plate 116 is connected to the rear end of the bottom plate 111 (the bottom plate 111 and the back plate 116 are formed by bending a single metal plate at a right angle).

A protrusion 117L that protrudes to the left is formed at the left end of the back plate 116, and a protrusion 117R that protrudes to the right is formed at the right end of the back plate 116.
The lower fixing member 110 forms a strong structure by the protrusion 117L being inserted into the through hole 115L and the protrusion 117R being inserted into the through hole 115R.

  A through-hole 118 is formed in a portion of the back plate 116 which is a substantially vertical center portion and a left and right substantially central portion. The through hole 118 passes through a pair of front and rear plate surfaces of the back plate 116.

The intermediate member 20 shown in FIG. 6 includes a top plate 21, a left side plate 22L, a right side plate 22R, a left side plate 27L, a right side plate 27R, and a rear side plate 28.
The intermediate member 20 of the present embodiment is formed by appropriately bending a single metal plate.

  The top plate 21 is a plate-like member that forms the upper part of the intermediate member 20. The top plate 21 has a pair of upper and lower plate surfaces. The shape of the top plate 21 is a generally rectangular shape that is slightly long in the front-rear direction.

  The left side plate 22L is a plate-like member that forms the left side portion of the intermediate member 20. The left side plate 22L has a pair of left and right plate surfaces. The shape of the left side plate 22L is a generally rectangular shape that is slightly long in the front-rear direction. The upper end portion of the left side plate 22L is connected to the left end portion of the top plate 21 (the top plate 21 and the left side plate 22L are formed by bending one metal plate at a right angle).

A through hole 23L is formed in the rear end portion (one end portion) and the upper end portion of the left side plate 22L. The through hole 23L penetrates a pair of left and right plate surfaces of the left side plate 22L.
A through hole 24L is formed in the front end portion (the other end portion) and the upper end portion of the left side plate 22L. The through hole 24L penetrates a pair of left and right plate surfaces of the left side plate 22L.
A protrusion 25L is formed on the rear half of the left side plate 22L and the front portion of the through hole 23L. The protrusion 25L is a rectangular protrusion that is long in the left-right direction when viewed from the side, and protrudes upward (above the top plate 21) from the upper end of the left side plate 22L.
A notch 26L is formed in the front end portion (the other end portion) of the left side plate 22L and a portion below the through hole 24L. The notch 26L prevents a pressure receiving pin 73 described later from interfering with the left side plate 22L.

  The right side plate 22R is a plate-like member that forms the right side portion of the intermediate member 20. The right side plate 22R has a pair of left and right plate surfaces. The shape of the right side plate 22R is a generally rectangular shape that is slightly long in the front-rear direction. The upper end portion of the right side plate 22R is connected to the right end portion of the top plate 21 (the top plate 21 and the right side plate 22R are formed by bending one metal plate at a right angle).

A through-hole 23R is formed in the rear end portion (one end portion) and the upper end portion of the right side plate 22R. The through hole 23R penetrates the pair of left and right plate surfaces of the right side plate 22R.
A through hole 24R is formed in the front end portion (other end portion) and the upper end portion of the right side plate 22R. The through hole 24R penetrates a pair of left and right plate surfaces of the right side plate 22R.
A protrusion 25R is formed in the rear half of the right side plate 22R and the front portion of the through hole 23R. The protrusion 25R is a rectangular protrusion that is long in the left-right direction when viewed from the side, and protrudes upward (above the top plate 21) from the upper end of the right side plate 22R.
A notch 26R is formed in the front end portion (the other end portion) of the right side plate 22R and a portion below the through hole 24R. The notch 26R prevents a pressure receiving pin 73 described later from interfering with the right side plate 22R.

The left side plate 27L is a plate-like member that has a pair of upper and lower plate surfaces and is elongated in the front-rear direction.
The left end portion of the left side plate 27L is connected to the lower end portion of the left side plate 22L (the left side plate 22L and the left side plate 27L are formed by bending one metal plate at a right angle).

The starboard plate 27R is a plate-like member that has a pair of upper and lower plate surfaces and is elongated in the front-rear direction.
The right end portion of the right side plate 27R is connected to the lower end portion of the right side plate 22R (the right side plate 22R and the right side plate 27R are formed by bending one metal plate at a right angle).
The right end surface of the left side plate 27L and the left end surface of the right side plate 27R are opposed to each other with a space therebetween.

The rear plate 28 is a plate-like member that has a pair of front and rear plate surfaces and is elongated to the left and right.
The lower end portion of the rear plate 28 is connected to the rear end portion of the top plate 21 (the top plate 21 and the rear plate 28 are formed by bending one metal plate at a right angle).

2 to FIG. 4 and FIG. 10 are related to the first pivot pin 71 according to the present invention “the pivot axis of the second wing member relative to the first wing member (the second wing member can be pivoted to the first wing member). And a slide restricting member according to an embodiment of the present invention.
The first rotation pin 71 is a substantially cylindrical member having a pair of end surfaces and an outer peripheral surface.
A ring-shaped groove is formed along the circumferential direction of the first rotation pin 71 at both ends of the outer peripheral surface of the first rotation pin 71 (portions in the vicinity of the pair of end surfaces).

A pair of bearings 74 and 74 shown in FIGS. 4 and 10 are substantially ring-shaped (thin cylindrical) members, and rotatably support the first rotation pin 71 on the lower fixing member 110.
The pair of bearings 74 and 74 are fitted into a through hole 113L formed in the left side plate 112L of the lower fixing member 110 and a through hole 113R formed in the right side plate 112R, respectively.
The bearings 74 and 74 of the present embodiment are made of a resin material, but may be replaced with a ball bearing made of a metal material.

As shown in FIGS. 2 to 5 and 10, the first rotation pin 71 includes a through hole 23 </ b> L formed in the left side plate 22 </ b> L of the intermediate member 20 from the left to the right, and a left side plate 112 </ b> L of the lower fixing member 110. The through hole of the bearing 74 fitted in the through hole 113L formed in the through hole, the through hole of the bearing 74 fitted in the through hole 113R formed in the right side plate 112R of the lower fixing member 110, and the right side of the intermediate member 20 The through holes 23R formed in the plate 22R are sequentially inserted.
As a result, the intermediate member 20 is rotatably connected to the lower fixing member 110 via the first rotation pin 71.
Note that the E-ring (not shown) is fitted into ring-shaped grooves formed at both ends of the outer peripheral surface of the first rotation pin 71, so that the first rotation pin 71 is connected to the intermediate member 20 and the lower fixing member. Does not drop out of 110.

In the present embodiment, a “pin-side engagement surface” that is a plane parallel to the axial direction of the first rotation pin 71 is formed at the right end portion of the first rotation pin 71, and the right side plate of the intermediate member 20. An “intermediate member side engagement surface” is formed in the through hole 23R formed in the 22R.
As a result, when the first rotation pin 71 is inserted into the through hole 23R, the “pin side engagement surface” is engaged with the “intermediate member side engagement surface”, and the first rotation pin 71 is engaged with the intermediate member 20. It cannot rotate relative to it.
Therefore, when the intermediate member 20 rotates with respect to the lower fixing member 110, the first rotation pin 71 rotates integrally with the intermediate member 20.

The upper fixing member 30 shown in FIG. 7 includes a top plate 31, a left side plate 32L, a right side plate 32R, and a back plate 35.
The upper fixing member 30 of the present embodiment is formed by appropriately bending a single metal plate.

The top plate 31 is a plate-like member that forms the upper part of the upper fixing member 30. The top plate 31 has a pair of upper and lower plate surfaces. The shape of the top plate 31 is a generally rectangular shape that is slightly long in the front-rear direction.
Through holes 31 a and 31 b are formed in the left half of the top plate 31, and through holes 31 c and 31 d are formed in the right half of the top plate 31. In the through holes 31a, 31b, 31c, and 31d, the top plate 31 penetrates a pair of upper and lower plate surfaces.

  The left side plate 32 </ b> L is a plate-like member that forms the left side portion of the upper fixing member 30. The left side plate 32L has a pair of left and right plate surfaces. The shape of the left side plate 32L is a shape obtained by obliquely cutting the rear lower part of a rectangle that is slightly long in the front-rear direction. The upper end portion of the left side plate 32L is connected to the left end portion of the top plate 31 (the top plate 31 and the left side plate 32L are formed by bending one metal plate at a right angle).

A through hole 33L is formed in the front end portion (one end portion) of the left side plate 32L and the portion that is substantially the center in the vertical direction. The through hole 33L penetrates a pair of left and right plate surfaces of the left side plate 32L.
A through hole 34L is formed at a front end portion (one end portion) of the left side plate 32L and a portion below the through hole 33L. The through hole 34L penetrates a pair of left and right plate surfaces of the left side plate 32L.

  The right side plate 32 </ b> R is a plate-like member that forms the right side portion of the upper fixing member 30. The right side plate 32R has a pair of left and right plate surfaces. The shape of the right side plate 32R is a shape obtained by obliquely cutting the rear lower part of a rectangle that is slightly long in the front-rear direction. The upper end portion of the right side plate 32R is connected to the right end portion of the top plate 31 (the top plate 31 and the right side plate 32R are formed by bending one metal plate at a right angle).

A through hole 33R is formed in the front end portion (one end portion) of the right side plate 32R and the portion that is substantially the center in the vertical direction. The through hole 33R penetrates the pair of left and right plate surfaces of the right side plate 32R.
A through hole 34R is formed in a front end portion (one end portion) of the right side plate 32R and a portion below the through hole 33R. The through hole 34R penetrates the pair of left and right plate surfaces of the right side plate 32R.

The rear plate 35 is a plate-like member that has a pair of front and rear plate surfaces and is elongated to the left and right.
The lower end portion of the rear plate 35 is connected to the rear end portion of the top plate 31 (the top plate 31 and the rear plate 35 are formed by bending a single metal plate at a right angle).

  In this embodiment, screws are inserted into the through holes 31a, 31b, 31c, and 31d, respectively, and these screws are screwed into screw holes formed at the rear end of the lower surface of the original cover 3 to fix the upper portion. The member 30 is fixed to the original cover 3.

The second rotation pin 72 shown in FIGS. 2 to 4 is a member that forms a rotation shaft that rotatably connects the upper fixing member 30 to the intermediate member 20.
The second rotation pin 72 is a substantially cylindrical member having a pair of end surfaces and an outer peripheral surface.
Ring-shaped grooves are formed along the circumferential direction of the second rotation pin 72 at both ends of the outer peripheral surface of the second rotation pin 72 (portions in the vicinity of the pair of end surfaces).

2, 3, 4, 6, and 7, the second rotation pin 72 includes a through hole 33 </ b> L formed in the left side plate 32 </ b> L of the upper fixing member 30 from the left to the right, and an intermediate member. The through holes 24L formed in the left side plate 22L, the through holes 24R formed in the right side plate 22R of the intermediate member 20, and the through holes 33R formed in the right side plate 32R of the upper fixing member 30 are sequentially inserted. .
As a result, the upper fixing member 30 is rotatably connected to the intermediate member 20 via the second rotation pin 72.
Note that the E-ring (not shown) is fitted into ring-shaped grooves formed at both ends of the outer peripheral surface of the second rotation pin 72, whereby the second rotation pin 72 is connected to the upper fixing member 30 and the intermediate member. Does not fall off from 20.

A first slider 40 shown in FIG. 8 is an embodiment of a slide member according to the present invention.
The first slider 40 is a substantially rectangular parallelepiped having a cam contact surface 41 that forms the lower half of the rear surface, a pivot pin support surface 42 that forms the upper half of the rear surface, an upper surface 43, a lower surface 44, a left surface 45, a right surface 46, and a front surface 47. It is a member of shape (lump shape). The first slider 40 of this embodiment is made of a resin material.
The first slider 40 is formed with spring receiving holes 48L and 48R. The spring receiving holes 48 </ b> L and 48 </ b> R are holes opened in the left half of the front surface 47 and the right half of the front surface 47, respectively. Each of the spring receiving holes 48L and 48R has an inner peripheral surface and a bottom surface.

As shown in FIGS. 4, 6, 8, 15 and 16, the first slider 40 is disposed inside the intermediate member 20 (more specifically, the lower plate surface of the top plate 21, the right side of the left plate 22L). (The space surrounded by the plate surface, the left plate surface of the right plate 22R, the upper plate surface of the left side plate 27L, and the upper plate surface of the right side plate 27R).
When the first slider 40 is accommodated in the intermediate member 20, the upper surface 43 of the first slider 40 contacts the lower plate surface of the top plate 21, and the left surface 45 of the first slider 40 is the right side of the left plate 22L. The right surface 46 is in contact with the left plate surface of the right plate 22R, the left end portion of the lower surface 44 is in contact with the upper plate surface of the port plate 27L, and the right end portion of the lower surface 44 is the starboard plate. It contacts the upper plate surface of 27R.
Therefore, the first slider 40 accommodated in the intermediate member 20 is in the front-rear direction with respect to the intermediate member 20 (more specifically, the longitudinal direction of the intermediate member 20, and the cam member 180 described in detail later). It is possible to move (slide) in the approaching direction and the direction away from the cam member 180.
The first slider 40 accommodated in the intermediate member 20 moves in the left-right direction and the vertical direction (direction perpendicular to the longitudinal direction of the intermediate member 20) with respect to the intermediate member 20, and It cannot rotate relative to it.
As described above, the first slider 40 accommodated in the intermediate member 20 is supported by the intermediate member 20 (without dropping from the gap between the left side plate 27L and the right side plate 27R). It is possible to move (slide) in the longitudinal direction.

The second slider 50 shown in FIG. 9 is a member having a body portion 51 and a cover portion 59.
The second slider 50 of this embodiment is made of a resin material.
The body portion 51 is a substantially rectangular parallelepiped (lumped) portion having a pressure receiving pin support surface 52, an upper surface 53, a lower surface 54, a left surface 55, a right surface 56, and a rear surface 57 forming the front surface.

  Spring receiving holes 58L and 58R are formed in the body portion 51. The spring receiving holes 58L and 58R are holes opened in the left half of the rear surface 57 and the right half of the rear surface 57, respectively. Each of the spring receiving holes 58L and 58R has an inner peripheral surface and a bottom surface.

  The cover part 59 is a plate-like part having a pair of upper and lower plate surfaces. The body portion 51 and the cover portion 59 of the present embodiment are integrally formed, and the front end portion of the cover portion 59 is connected to the rear end portion and the lower end portion of the body portion 51.

As shown in FIGS. 4, 6, 9, 15, and 16, the second slider 50 is located inside the intermediate member 20 and in front of the first slider 40 (first in the longitudinal direction of the intermediate member 20). (Position close to the second turning pin 72).
When the second slider 50 is housed inside the intermediate member 20, the upper surface 53 of the second slider 50 abuts on the lower plate surface of the top plate 21, and the left surface 55 contacts the right plate surface of the left plate 22L. The right surface 56 is in contact with the left plate surface of the right side plate 22R, the left end portion of the lower surface 54 is in contact with the upper plate surface of the left side plate 27L, and the right end portion of the lower surface 54 is the upper plate of the right side plate 27R. Contact the surface.
Therefore, the second slider 50 accommodated in the intermediate member 20 is in the front-rear direction with respect to the intermediate member 20 (more specifically, the longitudinal direction of the intermediate member 20, and the cam member 180 described in detail later). It is possible to move (slide) in the approaching direction and the direction away from the cam member 180.
Further, it cannot move in the left-right direction and the up-down direction (direction perpendicular to the longitudinal direction of the intermediate member 20) with respect to the intermediate member 20 and cannot rotate relative to the intermediate member 20.
As described above, the second slider 50 accommodated in the intermediate member 20 is supported by the intermediate member 20 (without dropping from the gap between the left side plate 27L and the right side plate 27R), and It is possible to move (slide) in the longitudinal direction.

The pressure receiving pin 73 shown in FIGS. 2 to 4 is a substantially cylindrical member having a pair of end surfaces and an outer peripheral surface.
Ring-shaped grooves are formed along the circumferential direction of the pressure receiving pin 73 at both ends of the outer peripheral surface of the pressure receiving pin 73 (portions in the vicinity of the pair of end surfaces).

As shown in FIGS. 2, 3, 4, and 7, the pressure receiving pin 73 is inserted into the through hole 34 </ b> L formed in the left side plate 32 </ b> L of the upper fixing member 30 and the through hole 33 </ b> R formed in the right side plate 32 </ b> R. Thus, the pressure receiving pin 73 is pivotally supported by the upper fixing member 30.
Note that the E-ring (not shown) is fitted into ring-shaped grooves formed at both ends of the outer peripheral surface of the pressure receiving pin 73, so that the pressure receiving pin 73 does not fall off the upper fixing member 30.

In the present embodiment, “a combination of the intermediate member 20, the upper fixing member 30, the second slider 50, the second rotation pin 72, and the pressure receiving pin 73” is an embodiment of the second wing member according to the present invention. Equivalent to.
In other words, an embodiment of the second wing member according to the present invention includes the intermediate member 20, the upper fixing member 30, the second slider 50, the second rotation pin 72, and the pressure receiving pin 73.

The cam member 180 shown in FIGS. 2, 4 and 10 is an embodiment of the cam member according to the present invention.
As shown in FIG. 10, the cam member 180 of this embodiment includes a contact member 181, a pair of bearings 182 and 182, a moving member 183, a moving position adjusting screw 189, and a nut 190.

A contact member 181 shown in FIG. 11 is an embodiment of the contact member according to the present invention.
The contact member 181 of the present embodiment is a generally cylindrical member having a pair of end surfaces and an outer peripheral surface.
A midway portion of the outer peripheral surface of the contact member 181 forms a contact surface 181a. Ring-shaped grooves 181b and 181b are formed along the circumferential direction of the contact member 181 at both ends of the outer peripheral surface of the contact member 181 (portions in the vicinity of the pair of end surfaces of the second rotation pin 72). The

A pair of bearings 182 and 182 shown in FIGS. 2, 4, and 10 are members for pivotally supporting the contact member 181 on the lower fixing member 110.
The pair of bearings 182 and 182 of the present embodiment are made of a resin material. The pair of bearings 182 and 182 has a generally ring shape (cylindrical shape).

  As shown in FIGS. 4, 5, and 10, the pair of bearings 182 and 182 have a first elongated hole 114R formed in the left plate 112L and a first elongated hole 114R formed in the right plate 112R of the lower fixing member 110, respectively. Fitted.

The width of the first long holes 114L and 114R (more precisely, the width of the first long holes 114L and 114R in the “direction perpendicular to the longitudinal direction of the first long holes 114L and 114R”) is the width of the pair of bearings 182 and 182. It is slightly larger than the outer diameter (diameter).
Further, the inner diameters of the pair of bearings 182 and 182 (the diameters of the through holes formed in the pair of bearings 182 and 182) are slightly larger than the outer diameter (diameter) of the contact member 181.
Accordingly, when both end portions of the contact member 181 are inserted into the “bearing 182 fitted in the first elongated hole 114L” and the “bearing 182 fitted in the first elongated hole 114R”, respectively, 181 and the pair of bearings 182 and 182 ”is a state in which the pair of bearings 182 and 182 are fitted in the first long holes 114L and 114R (and both ends of the contact member 181 are first long). It is possible to move (slide) in the longitudinal direction of the first long holes 114L and 114R while holding the holes 114L and 114R.
Further, the contact member 181 can rotate relative to the pair of bearings 182 and 182, and consequently the lower fixing member 110, around the axis of the contact member 181.

When both ends of the abutting member 181 are inserted into the “bearing 182 fitted in the first elongated hole 114L” and the “bearing 182 fitted in the first elongated hole 114R”, respectively, the axis of the abutting member 181 The direction is parallel to the axial direction of the first rotation pin 71 (in this embodiment, the left-right direction).
Further, when the “abutting member 181 and the pair of bearings 182 and 182 are combined” moves (slids) in the longitudinal direction of the first elongated holes 114L and 114R, the axial direction of the abutting member 181 is changed to the first time. A state parallel to the axial direction of the moving pin 71 is maintained.

A moving member 183 shown in FIG. 12 is an embodiment of the moving member according to the present invention.
The moving member 183 includes a back plate 184, a left side plate 185L, a right side plate 185R, a bottom plate 187, and a nut 188.
The moving member 183 of this embodiment forms a member corresponding to a combination of the back plate 184, the left side plate 185L, the right side plate 185R, and the bottom plate 187 by appropriately bending a single metal plate. It is obtained by fixing the nut 188 to the position by welding.

The back plate 184 is a plate-like member that forms the rear portion of the moving member 183. The back plate 184 has a pair of front and rear plate surfaces. The shape of the back plate 184 is a rectangle that is slightly long in the left-right direction.
A through-hole 184a is formed in the left and right central part and lower half part of the back plate 184 (see FIG. 4). The through hole 184 a penetrates a pair of front and rear plate surfaces of the back plate 184.

  The left side plate 185L is a plate-like member that forms the left side portion of the moving member 183. The left side plate 185L has a pair of left and right plate surfaces. The shape of the left side plate 185L is a rectangle that is slightly longer in the vertical direction, and has a shape in which the corners of the front upper end and the front lower end are cut out in a round shape. The rear end portion of the left side plate 185L is connected to the left end portion of the back plate 184 (the back plate 184 and the left side plate 185L are formed by bending one metal plate at a right angle).

  A second long hole 186L is formed in the left side plate 185L. The second long hole 186L penetrates the pair of plate surfaces of the left side plate 185L. The second long hole 186L has a shape extending in the vertical direction in a side view (the longitudinal direction of the second long hole 186L is parallel to the vertical direction).

  The right side plate 185R is a plate-like member that forms the right side portion of the moving member 183. The right side plate 185R has a pair of left and right plate surfaces. The shape of the right side plate 185R is a rectangle that is slightly longer in the vertical direction, and has a shape in which the corners of the front upper end and the front lower end are cut out in a round shape. The rear end portion of the right side plate 185R is connected to the right end portion of the back plate 184 (the back plate 184 and the right side plate 185R are formed by bending one metal plate at a right angle).

A second long hole 186R is formed in the right side plate 185R. The second long hole 186R penetrates the pair of plate surfaces of the right side plate 185R. The second long hole 186R has a shape extending in the vertical direction in a side view (the longitudinal direction of the second long hole 186L is parallel to the vertical direction).
The second long hole 186L and the first long hole 186R coincide (overlap) in a side view.

  The bottom plate 187 is a plate-like member that forms the lower part of the moving member 183. The bottom plate 187 has a pair of upper and lower plate surfaces. The shape of the bottom plate 187 is a rectangle that is slightly longer in the left-right direction. The rear end portion of the bottom plate 187 is connected to the lower end portion of the back plate 184 (the back plate 184 and the bottom plate 187 are formed by bending one metal plate at a right angle).

The nut 188 is a generally thin hexagonal columnar member having a pair of end faces and six side faces. The nut 188 is formed with a through hole penetrating a pair of end faces, and an internal thread is formed on the inner peripheral surface of the through hole.
The nut 188 is fixed to the front plate surface of the back plate 184 by welding. The through hole of the nut 188 fixed to the back plate 184 coincides (overlaps) with the through hole 184a formed in the back plate 184 in front view.

As shown in FIGS. 2, 4 and 10, the moving member 183 is disposed inside the lower fixing member 110 (more specifically, a space surrounded by the bottom plate 111, the left side plate 112L, the right side plate 112R and the back plate 116). The
When the moving member 183 is disposed inside the lower fixing member 110, the contact member 181 penetrates the second long hole 186L formed in the left side plate 185L and the second long hole 186R formed in the right side plate 185R. Is done.

When the moving member 183 is disposed inside the lower fixing member 110, the left plate surface of the left plate 185L abuts on the right plate surface of the left plate 112L of the lower fixing member 110, and the right plate surface of the right plate 185R. Is in contact with the left plate surface of the right plate 112R of the lower fixing member 110.
Therefore, the moving member 183 cannot move in the left-right direction of the moving member 183 with respect to the lower fixing member 110.
Further, the moving member 183 cannot rotate relative to the lower fixing member 110 (more strictly speaking, relative rotation around an axis whose axial direction is parallel to the front-rear direction).

Widths of the second long holes 186L and 186R (strictly speaking, the widths of the second long holes 186L and 186R in the “direction perpendicular to the longitudinal direction of the second long holes 186L and 186R (the front-rear direction in this embodiment)”) ) Is slightly larger than the outer diameter (diameter) of the contact member 181.
Accordingly, the abutting member 181 maintains the state of being inserted into the second long holes 186L and 186R, and the longitudinal direction of the second long holes 186L and 186R with respect to the moving member 183 (in this embodiment, the vertical direction). ) Relative to ().

A moving position adjusting screw 189 shown in FIG. 13A is an embodiment of the moving position adjusting member according to the present invention.
The movement position adjusting screw 189 of this embodiment includes a body portion 189a and a head portion 189b.

The body portion 189a is a substantially cylindrical portion. A male screw is formed on the outer peripheral surface of the body portion 189a.
The head 189b is a generally disc-shaped part. The head portion 189b is connected to one end portion (rear end portion) of the body portion 189a. The outer diameter (diameter) of the head portion 189b is larger than the outer diameter (diameter) of the body portion 189a. An engagement hole 189c for engaging the tool with the head 189b so as not to rotate relative to the head 189b is formed on the rear end surface of the head 189b.

  A nut 190 shown in FIG. 13B is a generally thin hexagonal columnar member having a pair of end faces and six side faces. The nut 190 is formed with a through hole penetrating a pair of end faces, and an internal thread is formed on the inner peripheral surface of the through hole.

As shown in FIG. 4 and FIG. 14A, the body portion 189 a of the movement position adjusting screw 189 is inserted through the through-hole 118 formed in the back plate 116 of the lower fixing member 110 from the rear to the front.
The nut 190 is screwed into the body portion 189 a of the movement position adjusting screw 189 that is inserted into the through hole 118.
At this time, the distance from the rear end surface of the nut 190 screwed to the body portion 189a to the front end surface of the head 189b of the movement position adjusting screw 189 is the thickness of the back plate 116 of the lower fixing member 110 (the back plate 116). The distance between the pair of front and rear plate surfaces) is set to be slightly larger.
The outer diameter (diameter) of the head 189b and the outer diameter of the nut 190 (diameter of the circumscribed circle of the nut 190) are larger than the inner diameter (diameter) of the through hole 118.
Therefore, the moving position adjusting screw 189 can rotate around the axis of the moving position adjusting screw 189 with respect to the lower fixing member 110 (in the present embodiment, around the axis parallel to the front-rear direction).
Further, the movement position adjustment screw 189 has an axial direction (in the case of the present embodiment, the front-rear direction in the case of the movement position adjustment screw 189) and a direction perpendicular to the axis line (in the case of the present embodiment, the up-down direction and the lower fixing member 110). It is not possible to move in the horizontal direction) and to rotate around an axis perpendicular to the axis of the movement position adjusting screw 189 (tilt with respect to the lower fixing member 110).

The body portion 189 a of the moving position adjusting screw 189 is inserted into a through hole 184 a formed in the back plate 184 of the moving member 183 disposed inside the lower fixing member 110, and is attached to a nut 188 fixed to the back plate 184. Screwed.
As described above, the movement position adjusting screw 189 supports and fixes the moving member 183 to the lower fixing member 110.

As shown in FIG. 10, the abutting member 181 is inserted into four elongated holes (a pair of first elongated holes 114L and 114R and a pair of second elongated holes 186L and 186R), and the inner periphery of these four elongated holes. It is in contact with the surface.
As shown in FIG. 14A, when the contact member 181 is fixed to the lower fixing member 110, the contact member 181 indicates that “the axis (center line) of the contact member 181 is a pair of first long holes. 114L and 114R are disposed at a position that overlaps the intersection of the center line C1 in the width direction and the center line C2 in the width direction of the pair of second long holes 186L and 186R.

The center line C1 in the width direction of the pair of first long holes 114L and 114R is a straight line parallel to the longitudinal direction of the pair of first long holes 114L and 114R, and the inner circumference of the pair of first long holes 114L and 114R It is a straight line that passes through positions that are equidistant from the “portions perpendicular to the longitudinal direction of the pair of first long holes 114L and 114R” that face each other.
The center line C2 in the width direction of the pair of second long holes 186L and 186R is a straight line parallel to the longitudinal direction of the pair of second long holes 186L and 186R, and the inner circumference of the pair of second long holes 186L and 186R It is a straight line that passes through positions that are equidistant from the “parts perpendicular to the longitudinal direction of the pair of second long holes 186L and 186R” that face each other.

In the present embodiment, the “longitudinal direction of the pair of first long holes 114L and 114R” and the “longitudinal direction of the pair of second long holes 186L and 186R” are different (not parallel).
Therefore, when the moving member 183 is fixed to the lower fixing member 110 by the moving position adjusting screw 189, the intersection of the center line C1 and the center line C2 is determined, and consequently the contact member 181 is arranged with respect to the lower fixing member 110. The position (fixed position) is also determined.

A pair of springs 60 and 60 shown in FIGS. 4, 15 and 16 is an embodiment of the urging member according to the present invention.
Each of the pair of springs 60 and 60 is a metal winding spring, and is a compression spring (a spring used in a contracted state so as to have a shorter overall length than when no external force is applied).

  The pair of springs 60 and 60 are provided inside the intermediate member 20 (more specifically, the lower plate surface of the top plate 21, the right plate surface of the left plate 22L, the left plate surface of the right plate 22R, and the left side plate 27L. In the space surrounded by the upper plate surface and the upper plate surface of the starboard plate 27R.

One end of one spring 60 of the pair of springs 60 is inserted into a spring receiving hole 48L formed in the first slider 40 and abuts against the bottom surface of the spring receiving hole 48L.
The other end of one spring 60 is inserted into a spring receiving hole 58L formed in the second slider 50, and abuts against the bottom surface of the spring receiving hole 58L.

Of the pair of springs 60, 60, one end of the other spring 60 is inserted into a spring receiving hole 48R formed in the first slider 40 and abuts against the bottom surface of the spring receiving hole 48R.
The other end of the other spring 60 is inserted into a spring receiving hole 58R formed in the second slider 50 and abuts against the bottom surface of the spring receiving hole 58R.

  The biasing force generated by the pair of springs 60, 60, that is, the force (elasticity) that the pair of springs 60, 60 elastically deformed in the compression direction tries to return to the original shape (the shape when no external force is applied). The first slider 40 is urged in a direction approaching the cam member 180 in the longitudinal direction of the intermediate member 20, and the second slider 50 is moved in a direction approaching the pressure receiving pin 73 in the longitudinal direction of the intermediate member 20. Be energized.

Therefore, as shown in FIG. 4, the cam contact surface 41 of the first slider 40 contacts the contact surface 181a of the contact member 181 of the cam member 180, and the pressure receiving pin support surface 52 of the second slider 50 is the pressure receiving pin. 73 abuts against the outer peripheral surface of 73.
As a result, due to the biasing force generated by the pair of springs 60, 60, the intermediate member 20 (and thus one embodiment of the second wing member according to the present invention) opens with respect to the lower fixing member 110 (in this embodiment). The upper fixing member 30 is biased so as to rotate counterclockwise when viewed from the right side, and the upper fixing member 30 is rotated counterclockwise when viewed from the right side in the present embodiment. Urged to rotate in the direction).

In the present embodiment, when the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction machine 1 is in the range from 0 ° to φ ° (when 0 ° ≦ θ ≦ φ °), the upper fixing member 30 Rotational force for closing the hinge 100 due to the weight of the fixed original cover 3 (rotational force for rotating the intermediate member 20 clockwise relative to the lower fixing member 110). And a rotational force that tries to open the hinge 100 due to the biasing force of the pair of springs 60 (60) (the intermediate member 20 is rotated counterclockwise with respect to the lower fixing member 110 in the right side view). The shape or the like of the cam contact surface 41 of the first slider 40 is determined in advance so that the rotational force is substantially balanced.
With this configuration, when the operator releases his or her hand from the original pressure plate 3 when the rotation angle θ of the original pressure plate 3 with respect to the main body 2 of the multifunction machine 1 is in the range of 0 ° to φ °, The rotation angle θ is maintained.

In this embodiment, when the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction machine 1 is in the range from φ ° to 90 ° (when φ ° <θ ≦ 90 °), the first slider The rotation pin support surface 42 of the 40 abuts against the outer peripheral surface of the first rotation pin 71, and the movement of the first slider 40 in the direction approaching the cam member 180 is restricted, and the cam of the first slider 40 The contact surface 41 is separated from the contact surface 181 a of the contact member 181 of the cam member 180.
Since the cross-sectional shape of the first rotation pin 71 of the present embodiment in the plane perpendicular to the axial direction is circular, the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction machine 1 is from φ ° to 90 °. Even if it changes within the range, the position of the first slider 40 relative to the intermediate member 20 (as long as the rotational angle of the upper fixing member 30 relative to the intermediate member 20 does not change), and thus the total length of the pair of springs 60 and 60 ( The biasing force generated by the pair of springs 60 and 60 does not change.

Therefore, when the rotation angle θ of the original cover 3 relative to the main body 2 of the multifunction device 1 is in the range of φ ° to 90 ° (strictly speaking, the first is due to the biasing force of the pair of springs 60 and 60). A frictional force acts on the contact portion between the rotating pin support surface 42 of the slider 40 and the outer peripheral surface of the first rotating pin 71), but the urging force of the pair of springs 60 and 60 is substantially the first slider. 40, the cam member 180 does not act on the cam member 180, and as a result, the rotational force that opens the hinge 100 due to the biasing force of the pair of springs 60 and 60 (the intermediate member 20 is viewed from the right side with respect to the lower fixing member 110). , The rotational force to rotate counterclockwise) does not act on the hinge 100.
Note that the value of φ may slightly vary as a result of adjusting the urging force of a pair of springs 60 and 60 by a cam member 180 described later.

  Hereinafter, adjustment of the urging force of the pair of springs 60 and 60 by the cam member 180 will be described with reference to FIG.

As shown in FIG. 14A, when the moving member 183 is relatively forward (compared to the case shown in FIG. 14B), the width direction of the pair of first elongated holes 114L and 114R The intersection of the center line C1 and the center line C2 in the width direction of the pair of second long holes 186L and 186R is “near the front lower end of the first long holes 114L and 114R and the lower ends of the pair of second long holes 186L and 186R” It is arranged at the “close position”.
Therefore, the contact member 181 is disposed at “a position near the front lower end of the first elongated holes 114L and 114R and near the lower end of the pair of second elongated holes 186L and 186R”.

  Since the male screw formed on the outer peripheral surface of the body portion 189a of the moving position adjusting screw 189 of the present embodiment is a right screw, the moving position adjusting screw 189 moves when rotated clockwise in the rear view. The nut 188 screwed on the body 189a of the position adjusting screw 189, and thus the moving member 183, moves rearward, and shifts from the state shown in FIG. 14A to the state shown in FIG. 14B.

When shifting from the state shown in FIG. 14A to the state shown in FIG. 14B, the center line C2 also moves rearward together with the moving member 183.
Therefore, the intersection of the center line C1 and the center line C2 moves to “a position near the rear upper end of the pair of first long holes 114L and 114R and near the upper end of the pair of second long holes 186L and 186R”.
Accordingly, the abutting member 181 maintains the state of being inserted into the pair of first elongated holes 114L and 114R and the pair of second elongated holes 186L and 186R, while the rear upper end of the pair of first elongated holes 114L and 114R. It moves to the position near the upper end of the pair of second long holes 186L and 186R.
In this way, by rotating the movement position adjusting screw 189 clockwise or counterclockwise in the rear view, the lower fixing member 110 (and thus the rotating shaft that rotatably connects the intermediate member 20 to the lower fixing member 110). It is possible to change (adjust) the position of the contact member 181 with respect to the first rotation pin 71).

In the state shown in FIG. 14A and the state shown in FIG. 14B, the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction machine 1 (and consequently the intermediate member 20 with respect to the lower fixing member 110). The “relative position of the first slider 40 in contact with the contact member 181 with respect to the intermediate member 20 (and thus the total length of the pair of springs 60 and 60)” in the case where the rotation angle is the same.
That is, the position of the contact member 181 with respect to the lower fixing member 110 is changed (adjusted) by rotating (moving) the moving position adjusting screw 189 to change (adjust) the position of the moving member 183 in the front-rear direction with respect to the lower fixing member 110. As a result, the urging force of the pair of springs 60 and 60 can be changed (adjusted).

As described above, the hinge 100 is
A lower fixing member 110 fixed to the main body 2 of the multifunction device 1;
A cam member 180 supported by the lower fixing member 110 so that the position relative to the lower fixing member 110 can be changed and fixed;
A second wing member rotatably connected to the lower fixing member 110 and fixed to the document pressing plate 3 of the multifunction machine 1 (in this embodiment, the intermediate member 20, the upper fixing member 30, the second slider 50, the first slider). A combination of the two rotating pins 72 and the pressure receiving pins 73);
A first slider 40 that is supported by the second wing member and is movable in a direction approaching the cam member 180 and a direction away from the cam member 180;
A pair of springs 60 and 60 for bringing the first slider 40 into contact with the cam member 180 by urging the first slider 40 in a direction approaching the cam member 180;
It comprises.

  With this configuration, the biasing force of the pair of springs 60 and 60 is not involved without removing the hinge 100 from the main body 2 and the original cover 3 of the multifunction machine 1 or exchanging the pair of springs 60 and 60. Can be easily adjusted.

The cam member 180 of the hinge 100 is
Both end portions penetrate through a pair of first long holes 114L and 114R formed in the lower fixing member 110, and a contact surface which is a surface that contacts the first slider 40 (cam contact surface 41 thereof) in the middle portion A contact member 181 formed with 181a;
A pair of second long holes 186L and 186R are formed to be supported so as to be movable in a predetermined movement direction (the front-rear direction in the present embodiment) with respect to the lower fixing member 110, and a pair of second long holes 186L and 186R are formed. Includes a moving member 183 through which the contact member 181 is inserted,
The moving position that is the position of the moving member 183 in the moving direction with respect to the lower fixing member 110 (in this embodiment, the position of the moving member 183 in the front-rear direction with respect to the lower fixing member 110) is changed and the moving member 183 is changed to the lower fixing member 110. A moving position adjusting screw 189 that can be fixed to
It comprises.
With this configuration, it is possible to adjust the urging force of the pair of springs 60 and 60 simply by rotating the movement position adjusting screw 189.

  In order to operate the cam member according to the present invention reliably (the moving member and the contact member according to the present invention move reliably), the longitudinal direction of the pair of first elongated holes, the pair of second elongated holes It is desirable that the geometrical relationship in the three directions of the longitudinal direction and the moving direction of the moving member satisfy the following requirements (A), (B) and (C).

  (A) The longitudinal direction of the pair of first long holes (in the case of the present embodiment, the longitudinal direction of the center line C1 shown in FIG. 14), the longitudinal direction of the pair of second long holes (in the case of the present embodiment, FIG. The longitudinal direction of the center line C2 shown) and the moving direction (in the case of this embodiment, the front-rear direction) are both axial directions of the rotation axis of the second wing member relative to the first wing member (in the case of this embodiment, the left-right direction). It is desirable to be perpendicular to.

(B) It is desirable for the longitudinal direction of a pair of 1st long hole to incline with respect to the moving direction of a moving member.
Here, “the longitudinal direction of the pair of second elongated holes is inclined with respect to the moving direction of the moving member” means that the longitudinal direction of the pair of second elongated holes is not parallel to the moving direction of the moving member. Point to.

If the requirement (B) is not satisfied, that is, if the longitudinal direction of the pair of second long holes is parallel to the moving direction of the moving member, even if the moving member moves in the moving direction, The “intersection of the center line in the width direction of the first long hole and the center line in the width direction of the pair of second long holes” does not move in the movement direction.
Therefore, the abutting member relatively moves along the pair of second long holes with respect to the moving member, and as a result, a situation in which the abutting member does not relatively move with respect to the first wing member may occur.

(C) It is desirable for the longitudinal direction of a pair of 1st long hole to incline with respect to the longitudinal direction of a pair of 2nd long hole.
Here, “the longitudinal direction of the pair of first elongated holes is inclined with respect to the longitudinal direction of the pair of second elongated holes” means that the longitudinal direction of the pair of first elongated holes is the length of the pair of second elongated holes. It is not parallel to the direction.

  When the requirement of (C) is not satisfied, that is, when the longitudinal direction of the pair of first long holes is parallel to the longitudinal direction of the pair of second long holes, The “intersection of the center line in the width direction and the center line in the width direction of the pair of second long holes” is not uniquely determined.

  In the hinge according to the present invention, when it is desired to increase “the amount of movement of the abutting member relative to the first wing member” relative to “the amount of movement of the moving member in the moving direction”, (i) a pair of second long holes It is desirable to set the longitudinal direction of the pair of members to be perpendicular to or substantially perpendicular to the moving direction of the moving member, and (ii) the longitudinal direction of the pair of first elongated holes with respect to the longitudinal direction of the pair of second elongated holes It is desirable to set the angle close to parallel.

Further, the first rotation pin 71 provided in the hinge 100 is a second wing member (in this embodiment, the intermediate member 20, and the second wing member) when the original cover 3 is closed with respect to the main body 2 of the multifunction device 1. The upper fixing member 30, the second slider 50, the second rotation pin 72, and the pressure receiving pin 73 are combined with each other in a direction that opens with respect to the first wing member (the lower fixing member 110 in this embodiment). A direction in which the first slider 40 approaches the cam member 180 by abutting against the first slider 40 when it is rotated by an angle or more (in the case of the present embodiment, when the rotation angle θ is larger than φ °). The first slider 40 is separated from the cam member 180.
With this configuration, when the rotation angle θ becomes larger than φ ° by rotating the second wing member of the hinge 100 with respect to the first wing member of the hinge 100, the cam member 180 has The biasing force of the pair of springs 60 and 60 does not act.
Therefore, when the rotation angle θ becomes larger than φ °, the moving position adjusting screw 189 is rotated, and the moving member 183 is moved in the moving direction (the front-rear direction in the present embodiment), thereby causing the contact member 181 to move. Can be easily moved with respect to the lower fixing member 110 (a large force is not required when the operation of rotating the movement position adjusting screw 189 is performed).

  In this embodiment, when the rotation angle θ is larger than φ °, the first rotation pin 71 contacts the first slider 40 and the first slider 40 is separated from the cam member 180. It is desirable that the “predetermined angle” when the is in contact with the slide member is appropriately selected according to the use of the hinge according to the present invention.

In the present embodiment, the first rotation pin 71 is “predetermined in a direction in which the second wing member opens with respect to the first wing portion on the basis of when the second connection target is closed with respect to the first connection target. By contacting the slide member when it rotates more than this angle, the slide member is restricted from moving in the direction approaching the cam member, and the slide member is separated from the cam member. It is not limited to this.
That is, a dedicated member that performs the above function may be separately provided in the hinge according to the present invention.
However, from the viewpoint of reducing the number of parts or reducing the size of the hinge, it is desirable that the “rotating shaft of the second wing member with respect to the first wing member” also serves as a member (slide regulating member) that performs the above function. .

Further, in this embodiment, the movement position adjustment screw 189 is screwed to the movement member 183, and the lower fixing member 110 is “in the axial direction of the movement position adjustment screw 189 (when the movement position adjustment screw 189 is screwed to the movement member 183. Although it is supported so that it cannot be relatively moved in the longitudinal direction of the rotation axis) and “can be rotated around the axis of the movement position adjusting screw 189”, the present invention is not limited to this.
That is, the moving position adjusting member according to the present invention is screwed into “one of the first wing member or moving member” and “the other of the first wing member or moving member (the one where the moving position adjusting member was not screwed). As long as it is relatively movable in the axial direction of the moving position adjusting member and is rotatable about the axis of the moving position adjusting member.
In the present embodiment, the axial direction of the moving position adjusting screw 189 is parallel to the moving direction of the moving member 183 (in the present embodiment, the front-rear direction).

In the present embodiment, the nut 190 is screwed to the movement position adjustment screw 189, so that the movement position adjustment screw 189 is “not relatively movable in the axial direction of the movement position adjustment screw 189” and “movement position adjustment”. Although it is supported so as to be rotatable about the axis of the screw 189, the present invention is not limited to this.
For example, an E-ring may be prepared instead of the nut 190, and the ring may be fitted into a ring-shaped groove formed in the middle part of the body part 189a of the movement position adjusting screw 189.

Hereinafter, a hinge 200 that is a second embodiment of the hinge according to the present invention will be described with reference to FIGS. 1 and 17 to 25.
As shown in FIG. 1, the hinge 200 connects the original cover 3 to the main body 2 of the multifunction machine 1 so as to be rotatable.
In the following, for the sake of convenience, among members constituting the hinge 200, “members having the same shape as the hinge 100 shown in FIGS. 1 to 16” are denoted by the same reference numerals as the corresponding members in the hinge 100 shown in FIGS. Therefore, detailed description is omitted.

As shown in FIGS. 17, 18, and 20, the hinge 200 includes a lower fixing member 210, an intermediate member 20, a first rotation pin 71, a pair of bearings 74 and 74, an upper fixing member 30, a second rotation pin 72, A pressure receiving pin 73, a first slider 40, a second slider 50, a pair of springs 60 and 60, and a cam member 280 are provided.
In the following, for the sake of convenience, when the original cover 3 is closed with respect to the main body 2 (when the rotation angle θ = 0 °), the vertical direction, the front / rear direction, and the left / right direction of the multifunction machine 1 are used as references (the original cover 3). The shape of each member constituting the hinge 200 is such that the up-down direction, the front-rear direction, and the left-right direction of the multifunction machine 1 when the is closed with respect to the main body 2 correspond to the up-down direction, front-rear direction, and left-right direction of the hinge 200 Will be described (see FIGS. 1 and 23).

A lower fixing member 210 shown in FIG. 19 is an embodiment of the first wing member according to the present invention. The lower fixing member 210 of the present embodiment is formed by appropriately bending a single metal plate.
The lower fixing member 210 includes a bottom plate 211, a left side plate 212L, a right side plate 212R, and a back plate 219.

  The bottom plate 211 is a plate-like member that forms the lower part of the lower fixing member 210. The bottom plate 211 has a pair of upper and lower plate surfaces. The shape of the bottom plate 211 is a rectangle that is slightly long in the front-rear direction in plan view.

  A through hole 211a is formed in the front end portion of the bottom plate 211 and in the left and right central portion. The through hole 211 a penetrates a pair of upper and lower plate surfaces of the bottom plate 211.

  An engagement hole 211b is formed in the bottom half 211 of the bottom half and the left half. The engagement hole 211b penetrates a pair of upper and lower plate surfaces of the bottom plate 211. The engagement hole 211b has a shape in which a first through hole and a second through hole having a smaller diameter than the first through hole are connected in the front-rear direction.

  In the present embodiment, an engagement protrusion (not shown) protruding upward from the rear upper surface of the main body 2 of the multifunction machine 1 is engaged with the engagement hole 211b, and a screw (not shown) is inserted into the through hole 211a. By screwing the screw into a screw hole formed in the upper rear portion of the main body 2, the bottom plate 211 and thus the lower fixing member 210 are fixed to the main body 2 (see FIG. 1).

  The left side plate 212L is a plate-like member that forms the left side of the lower fixing member 210. The left side plate 212L has a pair of left and right plate surfaces. The left side plate 212L has a shape like a staircase that is generally forwardly lowered in a side view. The lower end of the left side plate 212L is connected to the left end of the bottom plate 211 (the bottom plate 211 and the left side plate 212L are formed by bending one metal plate at a right angle).

  A through hole 213L is formed at the rear upper end of the left side plate 212L. The through hole 213L penetrates a pair of left and right plate surfaces of the left side plate 212L.

  A through hole 214L is formed in a portion of the left side plate 212L that is located below the through hole 213L. The through hole 214L penetrates a pair of left and right plate surfaces of the left side plate 212L. The shape of the through-hole 214L is a rectangle that is elongated in the vertical direction when viewed from the side.

  A through hole 215L is formed in the rear lower end portion of the left side plate 212L. The through hole 215L penetrates a pair of left and right plate surfaces of the left side plate 212L.

An arc-shaped elongated hole 216L is formed in a portion of the left side plate 212L that is in front of the through hole 213L and above the through hole 215L. The arc-shaped long hole 216L is an embodiment of the support hole according to the present invention. The arc-shaped long hole 216L passes through a pair of left and right plate surfaces of the left side plate 212L.
The arc-shaped long hole 216L has a shape extending along the circumference centering on the through-hole 215L in a side view (the side-view shape of the arc-shaped long hole 216L is an arc-shaped centering on the through-hole 215L).
The inner peripheral surface of the arc-shaped elongated hole 216L is an embodiment of the support surface according to the present invention.

A pair of through-holes 217L and 218L are formed in a portion sandwiched between the through-hole 215L and the arc-shaped long hole 216L in the left side plate 212L. The pair of through holes 217L and 218L is an embodiment of a plurality of wing side through holes according to the present invention.
The pair of through holes 217L and 218L penetrates the pair of left and right plate surfaces of the left side plate 212L.
The pair of through holes 217L and 218L are arranged at a predetermined interval on the same circumference centering on the through hole 215L in a side view. In other words, the pair of through holes 217L and 218L are formed at positions equidistant from the through hole 215L in the left side plate 212L.
More specifically, the through hole 218L is arranged at a position where the through hole 217L rotates counterclockwise by 20 ° around the through hole 215L as viewed from the right side.

  The right side plate 212R is a plate-like member that forms the right side portion of the lower fixing member 210. The right side plate 212R has a pair of left and right plate surfaces. The right side plate 212R has a shape like a staircase that is generally forwardly lowered in a side view. The lower end portion of the right side plate 212R is connected to the right end portion of the bottom plate 211 (the bottom plate 211 and the right side plate 212R are formed by bending one metal plate at a right angle).

  A through hole 213R is formed in the rear upper end portion of the right side plate 212R. The through hole 213R penetrates the pair of left and right plate surfaces of the right side plate 212R.

  A through hole 214R is formed in a portion of the right side plate 212R that is located below the through hole 213R. The through hole 214R penetrates a pair of left and right plate surfaces of the right side plate 212R. The shape of the through hole 214R is a rectangular shape that is elongated in the vertical direction in a side view.

  A through hole 215R is formed at the rear lower end of the right side plate 212R. The through hole 215R penetrates a pair of left and right plate surfaces of the right side plate 212R.

An arc-shaped long hole 216R is formed in a portion of the right side plate 212R that is in front of the through hole 213R and above the through hole 215R. The arc-shaped elongated hole 216R is an embodiment of the support hole according to the present invention. The arc-shaped long hole 216R penetrates a pair of left and right plate surfaces of the right side plate 212R.
The arc-shaped long hole 216R has a shape extending along the circumference centering on the through-hole 215R in a side view (the side-view shape of the arc-shaped long hole 216R is an arc-shaped centering on the through-hole 215R).
The inner peripheral surface of the arc-shaped long hole 216R is an embodiment of the support surface according to the present invention.

A pair of through-holes 217R and 218R are formed in a portion sandwiched between the through-hole 215R and the arc-shaped elongated hole 216R in the right side plate 212R. The pair of through holes 217R and 218R is an embodiment of a plurality of wing side through holes according to the present invention.
The pair of through holes 217R and 218R penetrate the pair of left and right plate surfaces of the right side plate 212R.
The pair of through holes 217R and 218R are arranged at a predetermined interval on the same circumference with the through hole 215R as the center in a side view. In other words, the pair of through holes 217R and 218R are formed at positions that are equidistant from the through hole 215R in the right side plate 212R.
More specifically, the through hole 218R is disposed at a position where the through hole 217R is rotated counterclockwise by 20 ° about the through hole 215R as viewed from the right side.

The back plate 219 is a plate-like member that forms the rear portion of the lower fixing member 210. The back plate 219 has a pair of front and rear plate surfaces. The shape of the back plate 219 is a rectangle that is slightly long in the vertical direction when viewed from the front.
The lower end portion of the back plate 219 is connected to the rear end portion of the bottom plate 211 (the bottom plate 211 and the back plate 219 are formed by bending one metal plate at a right angle).

A protrusion 219L that protrudes to the left is formed at the left end of the back plate 219, and a protrusion 219R that protrudes to the right is formed at the right end of the back plate 219.
The lower fixing member 210 forms a strong structure by the protrusion 219L being inserted into the through hole 214L and the protrusion 219R being inserted into the through hole 214R.

  As shown in FIGS. 19 and 20, bearings 74 and 74 are fitted into the through holes 213L and 213R, respectively, and the first turning pin 71 is inserted into the bearings 74 and 74, whereby the first turning pin 71 is It is rotatably supported by the lower fixing member 210 via bearings 74 and 74.

The cam member 280 shown in FIGS. 17, 18 and 20 is an embodiment of the cam member according to the present invention. The cam member 280 is supported by the lower fixing member 210.
As shown in FIG. 20, the cam member 280 of this embodiment includes a pair of arm members 281L and 281R, an arm shaft member 285, a pair of bearings 286 and 286, a contact member 287, a pair of bearings 288 and 288, and an arm angle adjustment pin. 289.

A pair of arm members 281L and 281R shown in FIG. 21A is an embodiment of a pair of arm members according to the present invention.
Each of the pair of arm members 281L and 281R of this embodiment is made of an elongated metal plate having a pair of left and right plate surfaces, and both ends thereof are rounded (corners at both ends are rounded off).

A through hole 282L is formed at one end (lower end) of the arm member 281L. The through hole 282L penetrates a pair of left and right plate surfaces of the arm member 281L.
A through hole 283L is formed in the other end (upper end) of the arm member 281L. The through hole 283L penetrates the pair of left and right plate surfaces of the arm member 281L.
A screw hole 284L is formed in the middle of the arm member 281L. The screw hole 284L is an embodiment of the arm member side through hole according to the present invention. The screw hole 284L passes through a pair of left and right plate surfaces of the arm member 281L. A female screw is formed on the inner peripheral surface of the screw hole 284L.

A through hole 282R is formed at one end (lower end) of the arm member 281R. The through hole 282R penetrates the pair of left and right plate surfaces of the arm member 281R.
A through hole 283R is formed in the other end (upper end) of the arm member 281R. The through hole 283R passes through the pair of left and right plate surfaces of the arm member 281R.
A through hole 284R is formed in the middle of the arm member 281R. The through hole 284R is an embodiment of the arm member side through hole according to the present invention. The through hole 284R penetrates a pair of left and right plate surfaces of the arm member 281R.

The arm shaft member 285 is a member that forms a rotation axis of the pair of arm members 281L and 281R with respect to the lower fixing member 210. The arm shaft member 285 of the present embodiment is made of a metal material and is a substantially cylindrical member having a pair of end surfaces and an outer peripheral surface.
Ring-shaped grooves are formed along the circumferential direction of the arm shaft member 285 at both ends of the outer peripheral surface of the arm shaft member 285 (portions in the vicinity of the pair of end surfaces of the arm shaft member 285).

A pair of bearings 286 and 286 shown in FIGS. 18 and 20 (strictly speaking, the right bearing 286 of the pair of bearings 286 and 286 is not shown) is configured to rotate the arm shaft member 285 to the lower fixing member 210. It is a member for supporting.
The pair of bearings 286 and 286 of this embodiment are made of a resin material. The pair of bearings 286 and 286 are generally ring-shaped (cylindrical).
The pair of bearings 286 and 286 are fitted into a through hole 215L formed in the left side plate 212L of the lower fixing member 210 and a through hole 215R formed in the right side plate 212R (see FIGS. 19 and 20).

As shown in FIG. 20, the arm shaft member 285 is inserted into a bearing 286 fitted in the through hole 215L and a bearing 286 fitted in the through hole 215R.
As a result, the arm shaft member 285 is rotatably supported by the lower fixing member 210 via the pair of bearings 286 and 286.
20 and 21, the left end portion of the arm shaft member 285 pivotally supported by the lower fixing member 210 is inserted into the through hole 282L of the arm member 281L, and the arm shaft member pivotally supported by the lower fixing member 210. The right end of 285 is inserted into the through hole 282R of the arm member 281R.
As a result, one end portions (lower end portions) of the pair of arm members 281L and 281R are rotatably connected to the lower fixing member 210.
It should be noted that E-rings (not shown) are fitted into ring-shaped grooves formed at both ends of the arm shaft member 285, whereby the pair of arm members 281L and 281R are arm shaft members 285, and thus the lower fixing member 210. Will not fall off.

A contact member 287 shown in FIG. 21A is an embodiment of the contact member according to the present invention.
The contact member 287 of the present embodiment is made of a metal material and is a generally cylindrical member having a pair of end surfaces and an outer peripheral surface. A middle portion of the outer peripheral surface of the contact member 287 forms a contact surface 287a.
Ring-shaped grooves are formed along the circumferential direction of the contact member 287 at both ends of the outer peripheral surface of the contact member 287 (portions in the vicinity of the pair of end surfaces of the contact member 287).

A pair of bearings 288 and 288 shown in FIGS. 18 and 20 (strictly speaking, the right bearing 288 is not shown in the pair of bearings 288 and 288), the abutting member 287 is paired with a pair of arm members 281L and 281R. This is a member for rotatably supporting the lower fixing member 210.
The pair of bearings 288 and 288 of this embodiment are made of a resin material. The pair of bearings 288 and 288 are generally ring-shaped (cylindrical).
The pair of bearings 288 and 288 are fitted into an arc-shaped elongated hole 216L formed in the left side plate 212L of the lower fixing member 210 and an arc-shaped elongated hole 216R formed in the right side plate 212R (see FIGS. 19 and 20). .

As shown in FIG. 20, the contact member 287 is inserted into the bearing 288 fitted in the arc-shaped elongated hole 216L and the bearing 288 fitted in the arc-shaped elongated hole 216R.
20 and 21, the left end portion of the abutting member 287 pivotally supported by the lower fixing member 210 is inserted into the through hole 283L of the arm member 281L, and the abutting member supported by the lower fixing member 210 is supported. The right end portion of the contact member 287 is inserted into the through hole 283R of the arm member 281R.
As a result, the contact member 287 is rotatably supported by the other end portions (upper end portions) of the pair of arm members 281L and 281R.
Further, when the pair of arm members 281L and 281R rotate around the arm shaft member 285, the contact member 287 is formed on the inner peripheral surface of the pair of arc-shaped elongated holes 216L and 216R via the pair of bearings 288 and 288. It is possible to move along the pair of arc-shaped long holes 216L and 216R while abutting.
Note that an E-ring (not shown) is fitted into ring-shaped grooves formed at both ends of the contact member 287, so that the contact member 287 has a pair of arm members 281L and 281R, and thus the lower fixing member 210. Will not fall off.

An arm angle adjusting pin 289 shown in FIG. 21B is an embodiment of the arm angle adjusting member according to the present invention.
The arm angle adjusting pin 289 of this embodiment is made of a metal material and includes a body portion 289a and a head portion 289c.
The body portion 289a is a substantially cylindrical portion. A male screw 289b is formed at one end portion (left end portion) of the outer peripheral surface of the body portion 289a.
The head 289c is a substantially disk-shaped part. The body portion 289a of the present embodiment is connected to the other end portion (right end portion) (the body portion 289a and the head portion 289c are integrally formed).

19 and 20, the arm angle adjusting pin 289 has a through hole 284R formed in the arm member 281R from the right to the left, a through hole 217R formed in the right side plate 212R of the lower fixing member 210, and a lower portion. The pair of arm members 281L and 281R are inserted into a through hole 217L formed in the left side plate 212L of the fixing member 210 and screwed into a screw hole 284L formed in the arm member 281L. The contact member 287 is fixed to the lower fixing member 210 so as not to move.
At this time, the contact member 287 is disposed at a position that is the front lower end portion of the pair of arc-shaped elongated holes 216L and 216R.

  As shown in FIG. 18, the urging force generated by the pair of springs 60, 60, that is, the pair of springs 60, 60 elastically deformed in the compressing direction is in the original shape (shape when no external force is acting). The first slider 40 is biased in a direction approaching the cam member 280 in the longitudinal direction of the intermediate member 20 by the force (elastic force) to return, and the second slider 50 is a pressure receiving pin in the longitudinal direction of the intermediate member 20. It is urged in the direction approaching 73.

Therefore, as shown in FIG. 18, the cam contact surface 41 of the first slider 40 contacts the contact surface 287a of the contact member 287 of the cam member 280, and the pressure receiving pin support surface 52 of the second slider 50 is the pressure receiving pin. 73 abuts against the outer peripheral surface of 73.
As a result, due to the urging force generated by the pair of springs 60, 60, the intermediate member 20 (and thus one embodiment of the second wing member according to the present invention) opens with respect to the lower fixing member 210 (in this embodiment). The upper fixing member 30 is biased so as to rotate counterclockwise when viewed from the right side, and the upper fixing member 30 is rotated counterclockwise when viewed from the right side in the present embodiment. Urged to rotate in the direction).

In the present embodiment, when the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction machine 1 is in the range from 0 ° to φ ° (when 0 ° ≦ θ ≦ φ °), the upper fixing member 30 The rotational force for closing the hinge 200 due to the weight of the fixed original cover 3 and the rotational force for opening the hinge 200 due to the urging force of the pair of springs 60 and 60 are approximately. The shape or the like of the cam contact surface 41 of the first slider 40 is determined in advance so as to be balanced.
With this configuration, when the operator releases his or her hand from the original pressure plate 3 when the rotation angle θ of the original pressure plate 3 with respect to the main body 2 of the multifunction machine 1 is in the range of 0 ° to φ °, The rotation angle θ is maintained.

In this embodiment, when the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction machine 1 is in the range from φ ° to 90 ° (when φ ° <θ ≦ 90 °), the first slider The rotation pin support surface 42 of the 40 is in contact with the outer peripheral surface of the first rotation pin 71 and the movement of the first slider 40 in the direction approaching the cam member 280 is restricted, and the cam of the first slider 40 The contact surface 41 is separated from the contact surface 287 a of the contact member 287 of the cam member 280.
Since the cross-sectional shape of the first rotation pin 71 of the present embodiment in the plane perpendicular to the axial direction is circular, the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction machine 1 is from φ ° to 90 °. Even if it changes within the range, the position of the first slider 40 relative to the intermediate member 20 (as long as the rotational angle of the upper fixing member 30 relative to the intermediate member 20 does not change), and thus the total length of the pair of springs 60 and 60 ( The biasing force generated by the pair of springs 60 and 60 does not change (see FIG. 24).

Therefore, when the rotation angle θ of the original cover 3 relative to the main body 2 of the multifunction device 1 is in the range of φ ° to 90 ° (strictly speaking, the first is due to the biasing force of the pair of springs 60 and 60). A frictional force acts on the contact portion between the rotating pin support surface 42 of the slider 40 and the outer peripheral surface of the first rotating pin 71), but the urging force of the pair of springs 60 and 60 is substantially the first slider. No longer acts on the cam member 280 via 40, and as a result, the rotational force for opening the hinge 200 due to the biasing force of the pair of springs 60, 60 does not act on the hinge 200.
Note that the value of φ may slightly vary as a result of adjusting the urging force of a pair of springs 60 and 60 by a cam member 280 described later.

  Below, adjustment of the urging | biasing force of a pair of spring 60 * 60 by the cam member 280 is demonstrated using FIG.

22A, the arm angle adjusting pin 289 has a through hole 284R formed in the arm member 281R from the right to the left, a through hole 217R formed in the right side plate 212R of the lower fixing member 210, and When the arm fixing pin 289 is inserted into a through hole 217L formed in the left side plate 212L of the lower fixing member 210 and is screwed into a screw hole 284L formed in the arm member 281L, the arm angle adjusting pin 289 has a pair of arm members 281L. It is possible to fix 281R to the lower fixing member 210 so as not to rotate at a position where the 281R is rotated forward and downward, and to fix the contact member 287 to the lower fixing member 210 so as not to move.
At this time, the contact member 287 is disposed at a position that is the front lower end portion of the pair of arc-shaped elongated holes 216L and 216R.

When the arm angle adjusting pin 289 is not inserted into any of the through hole 284R, the through hole 217R, the through hole 217L, the through hole 218R, and the through hole 218L and is not screwed into the screw hole 284L, that is, the arm angle adjusting pin 289. Are pulled out from the lower fixing member 210 and the pair of arm members 281L and 281R, the pair of arm members 281L and 281R can rotate with respect to the lower fixing member 210 about the arm shaft member 285. .
At this time, the abutting member 287 can move along the longitudinal direction of the pair of arc-shaped elongated holes 216L and 216R while maintaining the state of being inserted into the pair of arc-shaped elongated holes 216L and 216R. .

  In the present embodiment, the arm angle adjustment pin 289 is pulled out from the lower fixing member 210 and the pair of arm members 281L and 281R, and the pair of arm members 281L and 281R are rotated rearward and upward (counterclockwise in the right side view). The arm angle adjusting pin 289 is inserted into the lower fixing member 210 and the pair of arm members 281L and 281R, so that the state shown in FIG. 22 (a) is changed to the state shown in FIG. 22 (b). Transition.

As shown in FIG. 22B, the arm angle adjusting pin 289 has a through hole 284R formed in the arm member 281R from the right to the left, a through hole 218R formed in the right side plate 212R of the lower fixing member 210, and When the arm fixing pin 289 is inserted into the through hole 218L formed in the left side plate 212L of the lower fixing member 210 and is screwed into the screw hole 284L formed in the arm member 281L, the arm angle adjusting pin 289 has a pair of arm members 281L. It is possible to fix the contact member 281 to the lower fixing member 210 so that the contact member 281 cannot move.
At this time, the contact member 287 is disposed at a position to be the rear upper end portion of the pair of arc-shaped elongated holes 216L and 216R.

Thus, by pulling the arm angle adjustment pin 289 from the lower fixing member 210 and the pair of arm members 281L and 281R, the rotation angle (arm angle) of the pair of arm members 281L and 281R with respect to the lower fixing member 210 is changed ( The position of the contact member 287 with respect to the lower fixing member 210 can be changed (adjusted).
Further, by inserting the arm angle adjusting pin 289 into the lower fixing member 210 and the pair of arm members 281L and 281R, the pair of arm members 281L and 281R are fixed to the lower fixing member 210 so as not to be rotatable (lower fixing). It is possible to hold the rotation angle (arm angle) of the pair of arm members 281L and 281R with respect to the member 210) and to fix the position of the contact member 287 with respect to the lower fixing member 210.

Since the position of the contact member 287 with respect to the lower fixing member 210 is different between the state shown in FIG. 22A and the state shown in FIG. 22B, the rotation of the original cover 3 relative to the main body 2 of the multifunction machine 1 is different. “The relative position of the first slider 40 in contact with the contact member 287 relative to the intermediate member 20 (and thus the pair of springs 60) when the moving angle θ (and thus the rotation angle of the intermediate member 20 with respect to the lower fixing member 210) is the same. -60 total length) "is different.
That is, by changing (adjusting) the rotation angle (arm angle) of the pair of arm members 281L and 281R with respect to the lower fixing member 210, the position of the abutting member 287 with respect to the lower fixing member 210 is changed (adjusted). It is possible to change (adjust) the urging force of the pair of springs 60.

As described above, the hinge 200 includes the lower fixing member 210 that is fixed to the main body 2 of the multifunction device 1,
A cam member 280 supported by the lower fixing member 210 so that the position relative to the lower fixing member 210 can be changed and fixed;
A second wing member rotatably connected to the lower fixing member 210 and fixed to the original cover 3 (in the present embodiment, the intermediate member 20, the upper fixing member 30, the second slider 50, the second rotating pin). 72 and pressure receiving pin 73)
A first slider 40 movable in a direction approaching the cam member 280 and a direction away from the cam member 280 while being supported by the second wing member;
A pair of springs 60 and 60 for bringing the first slider 40 into contact with the cam member 280 by urging the first slider 40 in a direction approaching the cam member 280;
It comprises.
With this configuration, the biasing force of the pair of springs 60 and 60 is not involved without removing the hinge 200 from the main body 2 and the original cover 3 of the multifunction machine 1 or exchanging the pair of springs 60 and 60. Can be easily adjusted.

The cam member 280 of the hinge 200 is
A pair of arm members 281L and 281R whose one end portions (lower end portions) are rotatably connected to the lower fixing member 210;
Both end portions (left end portion and right end portion) are supported by the other end portions (upper end portions) of the pair of arm members 281L and 281R, and a contact surface 287a that is a surface that contacts the first slider 40 is formed in the middle portion. A contact member 287,
Arm angle adjustment pins 289 for fixing the pair of arm members 281L and 281R to the lower fixing member 210 so that the rotation angle (arm angle) of the pair of arm members 281L and 281R with respect to the lower fixing member 210 can be changed and fixed;
It comprises.
With this configuration, it is possible to easily adjust the urging force of the pair of springs 60 and 60 simply by rotating the pair of arm members 281L and 281R with respect to the lower fixing member 210.

In addition, the first rotation pin 71 included in the hinge 200 is:
The second wing member (in the present embodiment, the intermediate member 20, the upper fixing member 30, the second slider 50, the second rotation pin) is based on the time when the document pressing plate 3 is closed with respect to the main body 2 of the multifunction machine 1. 72 and the pressure receiving pin 73) are rotated by a predetermined angle or more in the opening direction with respect to the first wing member (in the case of the present embodiment, the lower fixing member 210) (in the case of the present embodiment, the rotation). When the angle θ becomes larger than φ °), the first slider 40 is restricted from moving in a direction approaching the cam member 280 by contacting the first slider 40, and the first slider 40 is moved to the cam member. Separate from 280.
With this configuration, when the rotation angle θ is larger than φ ° by rotating the second wing member of the hinge 200 with respect to the first wing member of the hinge 200, the cam member 280 includes The biasing force of the pair of springs 60 and 60 does not act.
Therefore, when the rotation angle θ is larger than φ °, the contact member 287 is moved relative to the lower fixing member 210 by rotating the pair of arm members 281L and 281R with respect to the lower fixing member 210. Work becomes easy (when a work for rotating the pair of arm members 281L and 281R with respect to the lower fixing member 210 is performed, a large force is not required).

  In this embodiment, when the rotation angle θ is larger than φ °, the first rotation pin 71 contacts the first slider 40 and the first slider 40 is separated from the cam member 280. It is desirable that the “predetermined angle” when the is in contact with the slide member is appropriately selected according to the use of the hinge according to the present invention.

The arm angle adjustment pin 289 provided in the hinge 200 is
One of the through-holes 217L and 218L formed at an equal distance from the rotation center of the pair of arm members 281L and 281R (the through-holes 215L and 215R in this embodiment) in the lower fixing member 210 and Screw holes 284L formed in the pair of arm members 281L and 281R while being inserted into any of the through holes 217R and 218R (a combination of the through holes 217L and 217R or a combination of the through holes 218L and 218R). And the through hole 284R (strictly speaking, the arm angle adjusting pin 289 is screwed into the screw hole 284L).
With this configuration, the pair of arm members 281L and 281R can be pivotably fixed with a simple structure.

In this embodiment, the lower fixing member 210 is formed with two sets of “a plurality of wing side through holes”, that is, a set of through holes 217L and 218L and a set of through holes 217R and 218R, and a pair of arm members 281L and 281R. In total, two “arm member side through holes”, that is, screw holes 284L and through holes 284R are formed, but the present invention is not limited to this.
That is, at least one set of “a plurality of wing side through holes” is formed in the lower fixing member of the hinge according to the present invention, and one or more “arm members” are provided in at least one of the pair of arms of the hinge according to the present invention. A “side through hole” may be formed.
In the present embodiment, the number of the wing side through holes included in the “plurality of wing side through holes” is two, but the present invention is not limited to this and is included in the “plurality of wing side through holes”. The number of wing side through holes may be three or more.

In this embodiment, a female screw is formed on the inner peripheral surface of the screw hole 284L which is an embodiment of the arm member side through hole according to the present invention, and a male screw 289b is formed at one end of the body portion 289a of the arm angle adjustment pin 289. The arm angle adjusting pin 289 is screwed into the screw hole 284L to prevent the arm angle adjusting pin 289 from falling off the lower fixing member 210, but the present invention is not limited to this.
For example, the male screw 289b formed at one end of the body portion 289a of the arm angle adjustment pin 289 is abolished, the one end is extended in the axial direction of the arm angle adjustment pin 289, and the extended arm angle adjustment pin 289 A ring-shaped groove extending in the circumferential direction is formed at one end of the body 289a, and an E-ring is fitted into the groove so that the arm angle adjustment pin 289 does not fall off the lower fixing member 210. .

A pair of arc-shaped long holes 216L and 216R are formed in the lower fixing member 210 of the hinge 200, and a pair of arc-shaped long holes 216L and 216R are inserted into the pair of arc-shaped long holes 216L and 216R. The inner peripheral surfaces of the long holes 216L and 216R are in contact with the outer peripheral surface of the contact member 287.
With this configuration, the abutting member 287 is not only supported by the lower fixing member 210 via the pair of arm members 281L and 281R but also directly supported by the lower fixing member 210. The strength (rigidity) of 280 increases, and the position of the contact member 287 is stabilized.

In this embodiment, the contact member 287 is directly supported by the lower fixing member 210 by the inner peripheral surfaces of the pair of arc-shaped elongated holes 216L and 216R coming into contact with the outer peripheral surface of the contact member 287. Is not limited to this.
For example, as shown in FIG. 25, an arcuate support surface 290L centering on the rotation axis of a pair of arm members 281L and 281R with respect to the lower fixing member 210 is formed on the lower fixing member 210, and the supporting surface 290L is the contact member. You may contact | abut to the outer peripheral surface of 287.

Hereinafter, a hinge 300 that is a third embodiment of the hinge according to the present invention will be described with reference to FIGS. 1 and 26 to 36.
As shown in FIG. 1, the hinge 300 connects the original cover 3 to the main body 2 of the multifunction machine 1 so as to be rotatable.
In the following, for convenience, among members constituting the hinge 300, “members having the same shape as the hinge 100 shown in FIGS. 1 to 16” are denoted by the same reference numerals as the corresponding members in the hinge 100 shown in FIGS. Therefore, detailed description is omitted.

26, 27 and 29, the hinge 300 includes a lower fixing member 310, an intermediate member 20, a first rotating pin 71, a pair of bearings 74 and 74, an upper fixing member 30, a second rotating pin 72, A pressure receiving pin 73, a first slider 40, a second slider 50, a pair of springs 60 and 60, and a cam member 380 are provided.
In the following, for the sake of convenience, when the original cover 3 is closed with respect to the main body 2 (when the rotation angle θ = 0 °), the vertical direction, the front / rear direction, and the left / right direction of the multifunction machine 1 are used as references (the original cover 3). The shape of each member constituting the hinge 300 is such that the up-down direction, the front-rear direction, and the left-right direction of the multifunction machine 1 when the is closed with respect to the main body 2 correspond to the up-down direction, the front-rear direction, and the left-right direction of the hinge 300, respectively. Will be described (see FIGS. 1 and 35).

A lower fixing member 310 shown in FIG. 28 is an embodiment of the first wing member according to the present invention. The lower fixing member 310 of the present embodiment is formed by appropriately bending a single metal plate.
The lower fixing member 310 includes a bottom plate 311, a left side plate 312L, a right side plate 312R, and a back plate 3169.

  The bottom plate 311 is a plate-like member that forms the lower part of the lower fixing member 310. The bottom plate 311 has a pair of upper and lower plate surfaces. The shape of the bottom plate 311 is a rectangle that is slightly long in the left-right direction in plan view.

  A through-hole 311a is formed in the front end portion of the bottom plate 311 and a portion slightly leftward from the left and right central portion. The through hole 311 a penetrates a pair of upper and lower plate surfaces of the bottom plate 311.

  An engagement hole 311b is formed in a portion of the bottom plate 311 that is slightly leftward from the rear half portion and the left and right central portions. The engagement hole 311b penetrates a pair of upper and lower plate surfaces of the bottom plate 311. The engagement hole 311b has a shape in which a first through hole and a second through hole having a diameter smaller than that of the first through hole are connected in the front-rear direction.

  In the present embodiment, an engagement protrusion (not shown) protruding upward from the rear upper surface of the main body 2 of the multifunction machine 1 is engaged with the engagement hole 311b, and a screw (not shown) is inserted into the through hole 311a. By screwing the screw into a screw hole formed in the upper rear portion of the main body 2, the bottom plate 311 and thus the lower fixing member 310 are fixed to the main body 2 (see FIG. 1).

  The left side plate 312L is a plate-like member that forms the left side portion of the lower fixing member 310. The left side plate 312L has a pair of left and right plate surfaces. The left side plate 312L has a shape like a staircase that is generally forwardly lowered in a side view. The lower end portion of the left side plate 312L is connected to the left end portion of the bottom plate 311 (the bottom plate 311 and the left side plate 312L are formed by bending one metal plate at a right angle).

  A through hole 313L is formed at the rear upper end of the left side plate 312L. The through hole 313L penetrates a pair of left and right plate surfaces of the left side plate 312L.

  A through hole 314L is formed in a portion of the left side plate 312L that is located below the through hole 313L. The through hole 314L penetrates a pair of left and right plate surfaces of the left side plate 312L. The shape of the through hole 314L is a rectangle elongated in the vertical direction in a side view.

A fitting hole 315L is formed in a portion of the left side plate 312L which is the front lower side of the through hole 313L. The fitting hole 315L is an embodiment of the fitting hole according to the present invention. The fitting hole 315L penetrates a pair of left and right plate surfaces of the left side plate 312L.
The fitting hole 315L of the present embodiment has a shape in which the centers coincide with each other in a side view and two squares whose phases (rotation angles) are shifted from each other by 45 ° are overlapped. In addition, two squares whose phases (rotation angles) are shifted by 45 ° are overlapped). The inner peripheral surface of the fitting hole 315L is an embodiment of the fitting surface according to the present invention.

  The right side plate 312R is a plate-like member that forms the right side portion of the lower fixing member 310. The right side plate 312R has a pair of left and right plate surfaces. The right side plate 312R has a shape like a staircase that is generally forwardly lowered in a side view. The lower end portion of the right side plate 312R is connected to the right end portion of the bottom plate 311 (the bottom plate 311 and the right side plate 312R are formed by bending one metal plate at a right angle).

  A through hole 313R is formed at the rear upper end of the right side plate 312R. The through hole 313R penetrates a pair of left and right plate surfaces of the right side plate 312R.

  A through hole 314R is formed in a portion of the right side plate 312R that is located below the through hole 313R. The through hole 314R penetrates a pair of left and right plate surfaces of the right side plate 312R. The shape of the through hole 314R is a rectangle elongated in the vertical direction in a side view.

A fitting hole 315R is formed in a portion of the right side plate 312R which is the front lower side of the through hole 313R. The fitting hole 315R is an embodiment of the fitting hole according to the present invention. The fitting hole 315R penetrates a pair of left and right plate surfaces of the right side plate 312R.
The fitting hole 315R of the present embodiment has a shape in which the centers coincide with each other when viewed from the side, and two squares whose phases (rotation angles) are shifted by 45 ° are stacked (the shape of the fitting hole 315R in the side view coincides with the center). In addition, two squares whose phases (rotation angles) are shifted by 45 ° are overlapped). The inner peripheral surface of the fitting hole 315R is an embodiment of the fitting surface according to the present invention.

The back plate 316 is a plate-like member that forms the rear portion of the lower fixing member 310. The back plate 316 has a pair of front and rear plate surfaces. The shape of the back plate 316 is generally rectangular when viewed from the front.
The lower end of the back plate 316 is connected to the rear end of the bottom plate 311 (the bottom plate 311 and the back plate 316 are formed by bending a single metal plate at a right angle).

A protrusion 316L that protrudes to the left is formed at the left end of the back plate 316, and a protrusion 316R that protrudes to the right is formed at the right end of the back plate 316.
The lower fixing member 310 forms a strong structure by the protrusion 316L penetrating through the through hole 314L and the protrusion 316R penetrating through the through hole 314R.

  As shown in FIGS. 28 and 29, bearings 74 and 74 are fitted into the through holes 313L and 313R, respectively, and the first rotating pin 71 is inserted into the bearings 74 and 74, whereby the first rotating pin 71 is It is rotatably supported by the lower fixing member 310 via bearings 74 and 74.

The cam member 380 shown in FIGS. 26, 27 and 29 is an embodiment of the cam member according to the present invention. The cam member 380 is supported by the lower fixing member 310.
As shown in FIG. 29, the cam member 380 of this embodiment includes a contact member 381 and a pair of left and right fitting members 382 and 382.

A contact member 381 shown in FIGS. 30 and 31 is an embodiment of the contact member according to the present invention. The abutting member 381 includes a body portion 381a and a pair of fixing portions 381c and 381c.
The contact member 381 of the present embodiment is made of a metal material, and the body portion 381a and the pair of fixing portions 381c and 381c are integrally formed.

  The body portion 381a has a pair of end surfaces and an outer peripheral surface, and is a substantially cylindrical portion that extends in the left-right direction (the axial direction is parallel to the left-right direction). A midway portion of the outer peripheral surface of the body portion 381a (in the case of the present embodiment, a portion of the outer peripheral surface of the body portion 381a excluding a portion near the pair of end surfaces) forms a contact surface 381b.

The pair of fixing portions 381c and 381c are rectangular parallelepiped portions that are square in side view and slightly longer in the left-right direction. The pair of fixed portions 381c and 381c are respectively connected to both end portions (left end portion and right end portion) of the body portion 381a.
As shown in FIG. 31B, the center O2 of the pair of fixing portions 381c and 381c is shifted rearward and upward with respect to the center O1 of the body portion 381a in a side view.

The pair of left and right fitting members 382 and 382 are an embodiment of the rotation angle changing member according to the present invention.
The pair of left and right fitting members 382 and 382 of the present embodiment are made of a resin material.
Of the pair of left and right fitting members 382 and 382, the shape of the left fitting member 382 is bilaterally symmetric with respect to the shape of the right fitting member 382.
The left fitting member 382 of the pair of left and right fitting members 382 and 382 will be described below with reference to FIGS. 32 and 33, and detailed description of the right fitting member 382 will be omitted.

The left fitting member 382 includes a body portion 382a and a flange portion 382c.
The body portion 382a of the left fitting member 382 is a thin rectangular parallelepiped portion in the left-right direction, the right side of the square in a side view, the upper and lower surfaces of a rectangle that is long in the front-rear direction, and the up-down direction in a front view. It has a long front surface and a rear surface (the left body portion 382a has a right surface, an upper surface, a lower surface, a front surface, and a rear surface).
In the present embodiment, the upper surface, the lower surface, the front surface, and the rear surface of the body portion 382a of the left fitting member 382 all form locking surfaces 382b, 382b, 382b, and 382b. The locking surfaces 382b, 382b, 382b, and 382b are one embodiment of the locking surfaces according to the present invention.

The length of one side in the side view of the body portion 382a of the left fitting member 382 is slightly smaller than the length of one side of the two squares in the side view of the fitting hole 315L formed in the lower fixing member 310. The length of one side in the side view of the body portion 382a of the fitting member 382 is slightly smaller than the length of one side of the two squares in the side view of the fitting hole 315R formed in the lower fixing member 310.
Therefore, the left fitting member 382 (the body portion 382a) can be detachably fitted into the fitting hole 315L, and the right fitting member 382 (the body portion 382a) is fitted into the fitting hole 315R. It can be detachably fitted.

The flange portion 382c of the left fitting member 382 is a thin disk-shaped portion having a pair of left and right disk surfaces and an outer peripheral surface. The flange portion 382c in the left fitting member 382 is connected to the right side of the body portion 382a in the left fitting member 382.
As shown in FIG. 33 (b), in the present embodiment, the center of the body portion 382a and the center of the flange portion 382c coincide with each other in a side view, and these coincident centers form the center O4 of the fitting member 382. Moreover, the diameter of the flange part 382c is larger than the diameter of the circumscribed circle of the trunk | drum 382a by a side view.

A fixing hole 382d is formed in the left fitting member 382. The fixing hole 382d penetrates the left fitting member 382 in the left-right direction (through the right surface of the body portion 382a to the left surface of the flange portion 382c). The fixed hole 382d has a square shape when viewed from the side.
As shown in FIG. 33B, the center O3 of the fixing hole 382d is shifted to the front lower side of the center O4 of the left fitting member 382 in a side view.

  The length of one side in the side view of the fixing hole 382d of the left fitting member 382 is slightly larger than the length of one side in the side view of the fixing portion 381c on the left side of the contact member 381, and The length of one side in the side view of the fixing hole 382d is slightly larger than the length of one side in the side view of the fixing portion 381c on the right side of the contact member 381.

  28 and 29, the contact member 381 is disposed at a position penetrating the pair of fitting holes 315L and 315R of the lower fixing member 310, and the left fixing portion 381c of the contact member 381 is fitted on the left side. The body portion 382a of the left fitting member 382 is fitted into the fitting hole 315L of the lower fixing member 310 while being fitted into the fixing hole 382d of the member 382, and the right fixing portion 381c of the contact member 381 is fitted to the right side. By fitting the body portion 382a of the right fitting member 382 into the fitting hole 315R of the lower fixing member 310 while fitting in the fixing hole 382d of the joint member 382, the left and right ends of the contact member 381 are respectively It is supported by the lower fixing member 310 via a pair of left and right fitting members 382 and 382.

When the left fixed portion 381c of the contact member 381 is fitted in the fixing hole 382d of the left fitting member 382, the upper surface, the lower surface, the front surface, and the rear surface of the left fixed portion 381c of the contact member 381 are on the left side. The fitting member 382 comes into contact with the inner peripheral surface composed of four planes of the fixing hole 382d.
As a result, the abutting member 381 is fixed to the left fitting member 382 so as not to be relatively rotatable around the axis of the abutting member 381 (in this embodiment, an axis parallel to the left-right direction).

When the right fixing portion 381c of the contact member 381 is fitted into the fixing hole 382d of the right fitting member 382, the upper surface, the lower surface, the front surface, and the rear surface of the right fixing portion 381c of the contact member 381 are on the right side. The fitting member 382 comes into contact with the inner peripheral surface composed of four planes of the fixing hole 382d.
As a result, the contact member 381 is fixed to the right fitting member 382 so as not to be relatively rotatable around the axis of the contact member 381.

When the body portion 382a of the left fitting member 382 is fitted into the fitting hole 315L of the lower fixing member 310, the four locking surfaces 382b, 382b, 382b, and 382b of the left fitting member 382 are the lower fixing member. It abuts on the inner peripheral surface of the fitting hole 315L of 310.
As a result, the left fitting member 382 is supported by the lower fixing member 310 so as not to be relatively rotatable around the axis of the left fitting member 382 (in this embodiment, an axis parallel to the left-right direction).

When the body portion 382a of the right fitting member 382 is fitted into the fitting hole 315R of the lower fixing member 310, the four locking surfaces 382b, 382b, 382b, and 382b of the right fitting member 382 are the lower fixing members. It abuts on the inner peripheral surface of the fitting hole 315R of 310.
As a result, the left fitting member 382 is supported by the lower fixing member 310 so as not to be relatively rotatable around the axis of the left fitting member 382 (in this embodiment, an axis parallel to the left-right direction).

  As described above, the contact member 381 is arranged around the cam shaft (in this embodiment, the axis passing through the center of the fitting hole 315L and the center of the fitting hole 315R) via the pair of left and right fitting members 382 and 382. It is fixed to the lower fixing member 310 so as not to be relatively rotatable.

31 (b), FIG. 33 (b) and FIG. 34 (a), the abutting member 381 can be relatively rotated around the camshaft through a pair of left and right fitting members 382 and 382. When fixed to the fixing member 310, the center O4 of the fitting member 382 coincides with the cam shaft.
Further, the center O2 of the pair of fixing portions 381c and 381c of the contact member 381 coincides with the center O3 of the fixing holes 382d and 382d of the pair of fitting members 382 and 382 in a side view, and the center O1 of the body portion 381a is fitted. The joint member 382 is disposed at a position displaced forward and downward with respect to the center O4.

  As shown in FIG. 27, the urging force generated by the pair of springs 60, 60, that is, the pair of springs 60, 60 elastically deformed in the compression direction is in the original shape (shape when no external force is applied). The first slider 40 is biased in a direction approaching the cam member 380 in the longitudinal direction of the intermediate member 20 by the force (elastic force) to return, and the second slider 50 is a pressure receiving pin in the longitudinal direction of the intermediate member 20. It is urged in the direction approaching 73.

Therefore, as shown in FIG. 27, the cam contact surface 41 of the first slider 40 contacts the contact surface 381b of the contact member 381 of the cam member 380, and the pressure receiving pin support surface 52 of the second slider 50 is the pressure receiving pin. 73 abuts against the outer peripheral surface of 73.
As a result, due to the urging force generated by the pair of springs 60, 60, the intermediate member 20 (and thus one embodiment of the second wing member according to the present invention) opens with respect to the lower fixing member 310 (in this embodiment). The upper fixing member 30 is biased so as to rotate counterclockwise when viewed from the right side, and the upper fixing member 30 is rotated counterclockwise when viewed from the right side in the present embodiment. Urged to rotate in the direction).

In the present embodiment, when the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction machine 1 is in the range from 0 ° to φ ° (when 0 ° ≦ θ ≦ φ °), the upper fixing member 30 The rotational force for closing the hinge 300 due to the weight of the fixed original cover 3 and the rotational force for opening the hinge 300 due to the urging force of the pair of springs 60 and 60 are approximately. The shape or the like of the cam contact surface 41 of the first slider 40 is determined in advance so as to be balanced.
With this configuration, when the operator releases his or her hand from the original pressure plate 3 when the rotation angle θ of the original pressure plate 3 with respect to the main body 2 of the multifunction machine 1 is in the range of 0 ° to φ °, The rotation angle θ is maintained.

In this embodiment, when the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction machine 1 is in the range from φ ° to 90 ° (when φ ° <θ ≦ 90 °), the first slider The rotation pin support surface 42 of the 40 is in contact with the outer peripheral surface of the first rotation pin 71, and the movement of the first slider 40 in the direction approaching the cam member 380 is restricted, and the cam of the first slider 40 The contact surface 41 is separated from the contact surface 381 b of the contact member 381 of the cam member 380.
Since the cross-sectional shape of the first rotation pin 71 of the present embodiment in the plane perpendicular to the axial direction is circular, the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction machine 1 is from φ ° to 90 °. Even if it changes within the range, the position of the first slider 40 relative to the intermediate member 20 (as long as the rotational angle of the upper fixing member 30 relative to the intermediate member 20 does not change), and thus the total length of the pair of springs 60 and 60 ( The biasing force generated by the pair of springs 60 and 60 does not change (see FIG. 36).

Therefore, when the rotation angle θ of the original cover 3 relative to the main body 2 of the multifunction device 1 is in the range of φ ° to 90 ° (strictly speaking, the first is due to the biasing force of the pair of springs 60 and 60). A frictional force acts on the contact portion between the rotating pin support surface 42 of the slider 40 and the outer peripheral surface of the first rotating pin 71), but the urging force of the pair of springs 60 and 60 is substantially the first slider. No longer acts on the cam member 380 via 40, and as a result, the rotational force for opening the hinge 300 due to the biasing force of the pair of springs 60, 60 does not act on the hinge 300.
Note that the value of φ may slightly vary as a result of adjustment of the urging force of a pair of springs 60 and 60 by a cam member 380 described later.

  Hereinafter, adjustment of the urging force of the pair of springs 60 and 60 by the cam member 380 will be described with reference to FIG.

As shown in FIGS. 34 (a) and 34 (b), the lower fixing member of the pair of left and right fitting members 382 and 382 fitted in the pair of left and right fitting holes 315L and 315R formed in the lower fixing member 310, respectively. The position of the contact member 381 supported by the lower fixing member 310 via the pair of left and right fitting members 382 and 382 can be changed by changing the phase with respect to 310 (the rotation angle about the cam shaft). Is possible.
In the case of this embodiment, it is possible to support the contact member 381 at eight different phases (rotation angles around the cam shaft) that are shifted by 45 ° between adjacent phases.

Since the position of the contact member 381 with respect to the lower fixing member 310 is different between the state shown in FIG. 34A and the state shown in FIG. 34B, the rotation of the original cover 3 relative to the main body 2 of the multifunction machine 1 is different. In the case where the moving angle θ (and hence the rotation angle of the intermediate member 20 with respect to the lower fixing member 310) is the same, “the relative position of the first slider 40 in contact with the contact member 381 relative to the intermediate member 20 (and thus the pair of springs 60). -60 total length) "is different.
That is, by changing the phase (rotation angle) of the pair of left and right fitting members 382 and 382 fitted in the fitting holes 315L and 315R with respect to the lower fixing member 310, the contact member 381 with respect to the lower fixing member 310 is changed. It is possible to change (adjust) the position and thus change (adjust) the urging force of the pair of springs 60 and 60.

As described above, the hinge 300 is
A lower fixing member 310 fixed to the main body 2 of the multifunction device 1;
A cam member 380 supported by the lower fixing member 310 so that the position relative to the lower fixing member 310 can be changed and fixed;
A second wing member rotatably connected to the lower fixing member 310 and fixed to the document pressing plate 3 of the multifunction machine 1 (in this embodiment, the intermediate member 20, the upper fixing member 30, the second slider 50, the first slider). A combination of the two rotating pins 72 and the pressure receiving pins 73);
A first slider 40 that is supported by the second wing member and is movable in a direction approaching the cam member 380 and a direction away from the cam member 380;
A pair of springs 60 and 60 for bringing the first slider 40 into contact with the cam member 380 by urging the first slider 40 in a direction approaching the cam member 380;
It comprises.
With this configuration, the biasing force of the pair of springs 60 and 60 is not involved without removing the hinge 300 from the main body 2 and the original cover 3 of the multifunction machine 1 or exchanging the pair of springs 60 and 60. Can be easily adjusted.

The cam member 380 of the hinge 300 is
Both end portions are supported by the lower fixing member 310 (in the case of this embodiment, via a pair of fitting members 382 and 382), and the intermediate portion is abutted against the first slider 40 (the cam contact surface 41 thereof). An abutting member 381 on which an abutting surface 381b which is a contacting surface is formed;
A pair of fitting members 382 and 382 capable of changing the rotation angle around the “cam shaft of the abutting member 381 relative to the lower fixing member 310” and fixing the rotation angle around the changed cam shaft;
Comprising
The “cam shaft of the abutting member 381 with respect to the lower fixing member 310” is an axis parallel to the rotation axis of the second wing member with respect to the lower fixing member 310 (in this embodiment, the first rotation pin 71). A straight line passing through the centers of the fitting holes 315L and 315R corresponds to this.
With this configuration, the rotation angle (rotation angle around the cam shaft) with respect to the lower fixing member 310 when the pair of fitting members 382 and 382 are fitted in the pair of fitting holes 315L and 315R is changed. It is possible to change the position of the contact member 381 with respect to the lower fixing member 310 only.

The pair of fitting members 382 and 382 of the hinge 300 are detachably fitted into a pair of fitting holes 315L and 315R formed in the lower fixing member 310.
The contact member 381 is fixed to the pair of fitting members 382 and 382,
A pair of fitting members 382 and 382 are fitted into the pair of fitting holes 315L and 315R, and locking surfaces 382b, 382b,... Formed on the pair of fitting members 382 and 382 and a pair of fitting holes 315L. When the inner peripheral surface (fitting surface) of 315R abuts, two or more of the pair of fitting members 382 and 382 around the cam shaft (a straight line passing through the centers of the fitting holes 315L and 315R in this embodiment) Are fixed to the lower fixing member 310 so that they cannot rotate relative to each other (in this embodiment, at eight different rotation angles shifted by 45 °),
When the pair of fitting members 382 and 382 are fitted in the pair of fitting holes 315L and 315R, the abutting member 381 is displaced at two or more different rotation angles around the cam shaft (in this embodiment, 45 ° apart). (At eight different rotation angles) with respect to the lower fixing member 310.
By configuring in this way, the hinge 300 can be contacted with the lower fixing member 310 only by attaching and detaching the pair of fitting members 382 and 382 to and from the pair of fitting holes 315L and 315R (without replacing parts and the like). The position of 381 can be easily changed.

In this embodiment, the contact member 381 is fixed to the pair of fitting members 382 and 382 (the contact member 381 is supported so as not to rotate relative to the fitting members 382 and 382). It is not limited to this.
For example, even if the contact member is rotatably supported by the rotation angle change member and the rotation shaft of the contact member with respect to the rotation angle change member is offset with respect to the cam shaft (the contact member with respect to the rotation angle change member) The axial direction of the rotating shaft may be parallel to and offset from the axial direction of the cam shaft.

When the contact member has a substantially rotating body shape (for example, a columnar shape or the like), the center axis of the contact member needs to be offset with respect to the cam shaft. This is due to the following reason.
When the central axis of the contact member having a substantially rotating body shape is offset with respect to the cam shaft, the rotation angle of the rotation angle changing member around the cam shaft is changed to contact the first wing member. It is possible to change the position of the member.
On the other hand, when the center axis of the contact member having a substantially rotating body shape is not offset with respect to the cam shaft (the center axis of the contact member coincides with the cam shaft), the rotation angle changing member Even if the rotation angle around the cam shaft is changed, the contact member only rotates about its central axis, so that the position of the contact member with respect to the first wing member is not substantially changed. .

The cam member 380 of this embodiment includes a pair of fitting members 382 and 382, but the present invention is not limited to this.
For example, one of the pair of fitting members 382 and 382 is omitted, and the end of the contact member 381 corresponding to the omitted fitting member 382 is connected to the lower fixing member 310 on the cam shaft. A shaft may be rotatably supported around the periphery.

The contact member 381 and the pair of fitting members 382 and 382 of the present embodiment are separate bodies, but the present invention is not limited to this. For example, the contact member and the rotation angle changing member may be integrally formed.
However, when the contact member and the rotation angle changing member are integrally formed, the state corresponding to the state in which the portion corresponding to the rotation angle changing member is fitted in the fitting hole formed in the first wing member In order to be able to switch between a state where the contact member is not pulled out (a state where the member is pulled out from the fitting hole), it is necessary to appropriately select the size and shape of the portion corresponding to the contact member and the rotation angle changing member. For example, the portion corresponding to the contact member as viewed from the axial direction of the cam shaft may be hidden by the portion corresponding to the rotation angle changing member.

Further, the first rotation pin 71 included in the hinge 300 is:
The second wing member (in the present embodiment, the intermediate member 20, the upper fixing member 30, the second slider 50, the second rotation pin) is based on the time when the document pressing plate 3 is closed with respect to the main body 2 of the multifunction machine 1. 72 and the pressure receiving pin 73) are rotated by a predetermined angle or more in the opening direction with respect to the first wing member (in the case of the present embodiment, the lower fixing member 310) (in the case of the present embodiment, the rotation). When the angle θ is greater than φ °), the first slider 40 is prevented from moving in a direction approaching the cam member 380 by contacting the first slider 40, and the first slider 40 is moved to the cam member. Separate from 380.
With this configuration, when the rotation angle θ becomes larger than φ ° by rotating the second wing member of the hinge 300 with respect to the first wing member of the hinge 300, the cam member 380 The biasing force of the pair of springs 60 and 60 does not act.
Therefore, when the rotation angle θ is larger than φ °, the rotation angle around the cam shaft when the pair of fitting members 382 and 382 are fitted into the pair of fitting holes 315L and 315R is changed. The operation of moving the contact member 381 relative to the lower fixing member 310 is facilitated (the pair of fitting members 382 and 382 are pulled out from the pair of fitting holes 315L and 315R, and the rotation angle around the cam shaft is changed. A large force is not required when performing the work of fitting in the pair of fitting holes 315L and 315R).

  In this embodiment, when the rotation angle θ is larger than φ °, the first rotation pin 71 contacts the first slider 40 and the first slider 40 is separated from the cam member 380. It is desirable that the “predetermined angle” when the is in contact with the slide member is appropriately selected according to the use of the hinge according to the present invention.

In this embodiment, the shape (side view shape) of the body portion 382a of the pair of fitting members 382 and 382, which are portions where the locking surfaces 382b, 382b. The shape (side view shape) of the fitting holes 315L and 315R as seen from the longitudinal direction of the camshaft is the center where the fitting surfaces (inner circumferential surfaces of the fitting holes 315L and 315R) are formed. In addition, although the two squares whose phases (rotation angles) are shifted by 45 ° are overlapped, the present invention is not limited to this.
For example, a triangular prism-shaped portion is formed on the fitting member, and three side surfaces of the triangular column-shaped portion are formed as locking surfaces, and the triangular column-shaped portion can be fitted on the first wing member. A triangular through hole may be formed and used as a fitting hole.

Hereinafter, a hinge 400 that is a fourth embodiment of the hinge according to the present invention will be described with reference to FIGS. 1, 30, 31, and 37 to 48.
As shown in FIG. 1, the hinge 400 connects the original cover 3 to the main body 2 of the multifunction machine 1 so as to be rotatable.
Hereinafter, for the sake of convenience, among the members constituting the hinge 400, “members having the same shape as the hinge 100 shown in FIGS. 1 to 16” are denoted by the same reference numerals as the corresponding members in the hinge 100 shown in FIGS. Therefore, detailed description is omitted.

37, 38 and 40, the hinge 400 includes a lower fixing member 410, an intermediate member 20, a first rotating pin 71, a pair of bearings 74 and 74, an upper fixing member 30, a second rotating pin 72, A pressure receiving pin 73, a first slider 40, a second slider 50, a pair of springs 60 and 60, and a cam member 480 are provided.
In the following, for the sake of convenience, when the original cover 3 is closed with respect to the main body 2 (when the rotation angle θ = 0 °), the vertical direction, the front / rear direction, and the left / right direction of the multifunction machine 1 are used as references (the original cover 3). The shape of each member constituting the hinge 400 is such that the up-down direction, the front-rear direction, and the left-right direction of the multi-function device 1 when it is closed with respect to the main body 2 correspond to the up-down direction, the front-rear direction, and the left-right direction of the hinge 400, respectively. Will be described (see FIGS. 1 and 47).

A lower fixing member 410 shown in FIG. 39 is an embodiment of the first wing member according to the present invention. The lower fixing member 410 of this embodiment is formed by appropriately bending a single metal plate.
The lower fixing member 410 includes a bottom plate 411, a left side plate 412L, a right side plate 412R, a back plate 416, a front shaft support plate 417, and a rear shaft support plate 418.

  The bottom plate 411 is a plate-like member that forms the lower part of the lower fixing member 410. The bottom plate 411 has a pair of upper and lower plate surfaces. The shape of the bottom plate 411 is a rectangle that is slightly long in the left-right direction in plan view.

  A through hole 411a is formed in the front end portion of the bottom plate 411 and a portion slightly leftward from the left and right central portions. The through-hole 411a penetrates a pair of upper and lower plate surfaces of the bottom plate 411.

  An engagement hole 411b is formed in the bottom half of the bottom plate 411 and a portion slightly leftward from the left and right center. The engagement hole 411b penetrates a pair of upper and lower plate surfaces of the bottom plate 411. The engagement hole 411b has a shape in which a first through hole and a second through hole having a smaller diameter than the first through hole are connected in the front-rear direction.

  In the present embodiment, an engagement protrusion (not shown) protruding upward from the rear upper surface of the main body 2 of the multifunction device 1 is engaged with the engagement hole 411b, and a screw (not shown) is inserted into the through hole 411a. By screwing the screw into a screw hole formed in the upper rear portion of the main body 2, the bottom plate 411 and thus the lower fixing member 410 are fixed to the main body 2 (see FIG. 1).

  The left side plate 412L is a plate-like member that forms the left side portion of the lower fixing member 410. The left side plate 412L has a pair of left and right plate surfaces. The left side plate 412L has a shape like a staircase that is generally forwardly lowered in a side view. The lower end of the left side plate 412L is connected to the left end of the bottom plate 411 (the bottom plate 411 and the left side plate 412L are formed by bending one metal plate at a right angle).

  A through hole 413L is formed at the rear upper end of the left side plate 412L. The through hole 413L penetrates a pair of left and right plate surfaces of the left side plate 412L.

  A through hole 414L is formed in a portion of the left side plate 412L that is located below the through hole 413L. The through hole 414L penetrates a pair of left and right plate surfaces of the left side plate 412L. The shape of the through hole 414L is a rectangle elongated in the vertical direction in a side view.

  A through hole 415L is formed in a portion of the left side plate 412L that is the front lower side of the through hole 413L. The through hole 415L penetrates a pair of left and right plate surfaces of the left side plate 412L.

  The right side plate 412R is a plate-like member that forms the right side portion of the lower fixing member 410. The right side plate 412R has a pair of left and right plate surfaces. The right side plate 412R has a shape like a staircase that is generally forwardly lowered in a side view. The lower end portion of the right side plate 412R is connected to the right end portion of the bottom plate 411 (the bottom plate 411 and the right side plate 412R are formed by bending one metal plate at a right angle).

  A through hole 413R is formed at the rear upper end of the right side plate 412R. The through-hole 413R penetrates a pair of left and right plate surfaces of the right side plate 412R.

  A through hole 414R is formed in a portion of the right side plate 412R that is located below the through hole 413R. The through hole 414R passes through the pair of left and right plate surfaces of the right side plate 412R. The shape of the through hole 414R is a rectangular shape that is elongated in the vertical direction in a side view.

  A through hole 415R is formed in a portion of the right side plate 412R that is the front lower side of the through hole 413R. The through hole 415R penetrates a pair of left and right plate surfaces of the right side plate 412R.

The back plate 416 is a plate-like member that forms the rear portion of the lower fixing member 410. The back plate 416 has a pair of front and rear plate surfaces. The shape of the back plate 416 is generally rectangular when viewed from the front.
The lower end of the back plate 416 is connected to the rear end of the bottom plate 411 (the bottom plate 411 and the back plate 416 are formed by bending a single metal plate at a right angle).

A protrusion 416L that protrudes to the left is formed at the left end of the back plate 416, and a protrusion 416R that protrudes to the right is formed at the right end of the back plate 416.
The lower fixing member 410 forms a strong structure by the protrusion 416L being inserted into the through hole 414L and the protrusion 416R being inserted into the through hole 414R.

The front shaft support plate 417 is a plate-like member that is formed on the right side plate 412R at a position below the through hole 415R and protrudes to the right side of the right side plate 412R. The front shaft support plate 417 has a pair of front and rear plate surfaces. The front view shape of the front shaft support plate 417 is a rectangle that is slightly long in the vertical direction.
The left end portion of the front shaft support plate 417 is connected to the right side plate 412R (the right side plate is formed by forming an appropriate cut in one metal plate and bending the portion surrounded by the cut at a right angle to the other portions. 412R and front shaft support plate 417 are formed).
A shaft support hole 417a is formed in the front shaft support plate 417. The shaft support hole 417a penetrates a pair of front and rear plate surfaces of the front shaft support plate 417.

The rear shaft support plate 418 is a plate-like member that is formed at a position below the through hole 415R in the right side plate 412R and protrudes to the right side of the right side plate 412R. The rear shaft support plate 418 has a pair of front and rear plate surfaces. The front view shape of the rear shaft support plate 418 is a rectangle that is slightly long in the vertical direction.
The left end portion of the rear shaft support plate 418 is connected to the right side plate 412R (by appropriately forming a notch in one metal plate and bending the portion surrounded by the notch at right angles to the other portions, the right side plate 412R and a rear shaft support plate 418 are formed).
A shaft support hole 418 a is formed in the rear shaft support plate 418. The shaft support hole 418a passes through a pair of front and rear plate surfaces of the rear shaft support plate 418.
In the present embodiment, the shaft support hole 417a and the shaft support hole 418a overlap (match) in front view.

  As shown in FIGS. 39 and 40, bearings 74 and 74 are fitted into the through holes 413L and 413R, respectively, and the first rotating pin 71 is inserted into the bearings 74 and 74, whereby the first rotating pin 71 is It is rotatably supported by the lower fixing member 410 via bearings 74 and 74.

A cam member 480 shown in FIGS. 37, 38 and 40 is an embodiment of the cam member according to the present invention. The cam member 480 is supported by the lower fixing member 410.
As shown in FIG. 40, the cam member 480 of this embodiment includes a contact member 481, a shaft support member 482, a worm wheel 483, and a worm 484.

A contact member 481 shown in FIGS. 30 and 31 is an embodiment of the contact member according to the present invention. The contact member 481 includes a body portion 481a and a pair of fixing portions 481c and 481c.
The contact member 481 of this embodiment is made of a metal material, and the body portion 481a and the pair of fixing portions 481c and 481c are integrally formed.

  The body portion 481a has a pair of end surfaces and an outer peripheral surface, and is a substantially cylindrical portion extending in the left-right direction. A midway portion of the outer peripheral surface of the body portion 481a (in the case of the present embodiment, a portion of the outer peripheral surface of the body portion 481a excluding a portion near the pair of end surfaces) forms a contact surface 481b.

The pair of fixed portions 481c and 481c are rectangular parallelepiped portions that are square in side view and slightly long in the left-right direction. The pair of fixed portions 481c and 481c are connected to both end portions of the body portion 481a.
As shown in FIG. 31B, the center O2 of the pair of fixing portions 481c and 481c is shifted rearward and upward with respect to the center O1 of the body portion 481a in a side view.

The shaft support member 482 shown in FIGS. 41 and 42 includes a body portion 482a and a flange portion 482b.
The shaft support member 482 of this embodiment is made of a resin material, and the body portion 482a and the flange portion 482b are integrally formed.
The body portion 482a is a thin disc-shaped portion in the left-right direction having a right disc surface and an outer peripheral surface. The outer diameter (diameter) of the trunk portion 482a is slightly smaller than the through hole 415L.
The flange portion 482b is a disc-shaped portion that is thin in the left-right direction and has a pair of left and right disc surfaces and an outer peripheral surface. The outer diameter (diameter) of the flange portion 482b is larger than the through hole 415L.
The flange portion 482b is connected to the left side of the body portion 482a, and the center of the body portion 482a and the center of the flange portion 482b coincide (overlap) in a side view, and these coincident centers form the center O6 of the contact member 481. (See (b) of FIG. 42).
A fixed hole 482c is formed in the shaft support member 482. The fixing hole 482c penetrates the shaft support member 482 in the left-right direction (through the board surface on the right side of the body part 482a to the board surface on the left side of the flange part 482b). The fixing hole 482c has a square shape when viewed from the side.
As shown in FIG. 42B, the center O5 of the fixing hole 482c is shifted to the front lower side of the center O6 of the shaft support member 482 in a side view.
As shown in FIG. 40, the body 482a of the shaft support member 482 is fitted to the through hole 415L of the lower fixing member 410 in the right direction so that the shaft support member 482 is rotatably supported by the lower fixing member 410. Is done.
Further, when the shaft support member 482 is fitted into the through-hole 415L, the right side panel surface of the flange portion 482b abuts on the left side plate surface of the left side plate 412L, so that the horizontal direction of the shaft support member 482 with respect to the lower fixing member 410 Movement is restricted.

  The length of one side in the side view of the fixing hole 482c of the shaft support member 482 is slightly larger than the length of one side in the side view of the fixing portion 481c on the left side of the contact member 481.

A worm wheel 483 shown in FIGS. 43 and 44 is an embodiment of the worm wheel according to the present invention.
The worm wheel 483 of this embodiment includes a gear portion 483a and a shaft support portion 483b. The worm wheel 483 of this embodiment is made of a metal material, and the gear portion 483a and the shaft support portion 483b are integrally formed.
The gear portion 483a is a portion of the worm wheel 483 that functions as a helical gear. The gear portion 483a has a pair of left and right panel surfaces, and a plurality of helical teeth are formed on the outer peripheral portion of the gear portion 483a. The outer diameter of the gear portion 483a (the diameter of the circumference connecting the tops of the helical teeth) is larger than that of the through hole 415R.
The shaft support portion 483b is a disc-shaped portion that is thin in the left-right direction and has a left-side disc surface and an outer peripheral surface. The outer diameter (diameter) of the shaft support 483b is slightly smaller than the through hole 415R.
The shaft support portion 483b is connected to the left side of the gear portion 483a, and the center of the gear portion 483a and the center of the shaft support portion 483b coincide (overlap) in a side view, and these coincident centers form the center O8 of the worm wheel 483 ( (See FIG. 44 (b)).
A fixing hole 483c is formed in the worm wheel 483. The fixing hole 483c penetrates the worm wheel 483 in the left-right direction (from the right side surface of the gear portion 483a to the left side surface of the shaft support portion 483b). The fixed hole 483c has a square shape when viewed from the side.
As shown in FIG. 44B, the center O7 of the fixing hole 483c is shifted to the front lower side of the center O8 of the worm wheel 483 in a side view.
As shown in FIG. 40, the worm wheel 483 is rotatably supported by the lower fixing member 410 by fitting the shaft supporting portion 483b of the worm wheel 483 to the through hole 415R of the lower fixing member 410 in the left direction. .
Further, when the worm wheel 483 is fitted in the through hole 415R, the left board surface of the gear portion 483a abuts on the right board surface of the right plate 412R. Is regulated.

  The length of one side in the side view of the fixing hole 483c of the worm wheel 483 is slightly larger than the length of one side in the side view of the fixing portion 481c on the right side of the contact member 481.

As shown in FIGS. 39 and 40, the contact member 481 is disposed at a position passing through the pair of through-holes 415L and 415R of the lower fixing member 410, and the fixing portion 481c on the left side of the contact member 481 is attached to the shaft support member 482. The body portion 482a of the shaft support member 482 is fitted into the through hole 415L of the lower fixing member 410 while being fitted into the fixing hole 482c, and the right fixing portion 481c of the contact member 481 is fitted into the fixing hole 483c of the worm wheel 483. By fitting the shaft support portion 483b of the worm wheel 483 into the through hole 415R of the lower fixing member 410 while mounting, the left and right ends of the contact member 481 are connected to the lower fixing member via the shaft support member 482 and the worm wheel 483. 410 is supported.
More specifically, the abutting member 481 is pivotally supported by the lower fixing member 410 via the shaft support member 482 and the worm wheel 483 so as to be rotatable around “the cam shaft of the abutting member 481 with respect to the lower fixing member 410”.
In the present embodiment, “the cam shaft of the contact member 481 with respect to the lower fixing member 410” includes a straight line passing through the through holes 415L and 415R and the center O6 of the shaft supporting member 482 supported by the lower fixing member 410. And a straight line passing through the center O8 of the worm wheel 483 pivotally supported by the lower fixing member 410.

When the left and right fixing portions 481c and 481c of the contact member 481 are fitted in the fixing hole 482c and the fixing hole 483c, respectively, the four surfaces forming the outer periphery of the left and right fixing portions 481c and 481c are the fixing hole 482c and the fixing hole, respectively. It contacts the inner peripheral surface of 483c.
Therefore, the shaft support member 482 and the worm wheel 483 are fixed so as not to rotate relative to the contact member 481 (the contact member 481, the shaft support member 482 and the worm wheel 483 rotate integrally).

A worm 484 shown in FIG. 45 is an embodiment of a worm according to the present invention.
The worm 484 includes a body portion 484a and a head portion 484b. The worm 484 of this embodiment is made of a metal material, and the body portion 484a and the head portion 484b are integrally formed.

The body portion 484a is a substantially cylindrical portion having a pair of front and rear end surfaces and an outer peripheral surface and having an axis parallel to the front-rear direction. A spiral thread groove is formed on the outer peripheral surface of the body portion 484a.
Note that the spiral thread groove formed on the outer peripheral surface of the body portion 484a of the present embodiment is a left-hand thread, and the twist angle of the thread groove is smaller than the repose angle (friction angle).
A ring-shaped groove is formed in the rear end portion of the outer peripheral surface of the body portion 484a in addition to the screw groove.

The head portion 484b is a thin cylindrical portion connected to the front end portion of the body portion 484a.
The center line of the head 484 b coincides with the center line of the body 484 a, and these coincident center lines form the axis of the worm 484. In this embodiment, the axis of the worm 484 is parallel to the front-rear direction.
A hole for fitting a tool (driver or the like) in a relatively non-rotatable manner is formed on the front end face of the head 484b.

  As shown in FIGS. 39 and 40, the body portion 484a of the worm 484 penetrates the shaft support hole 417a formed in the front shaft support plate 417 of the lower fixing member 410 and the shaft support hole 418a formed in the rear shaft support plate 418. By mounting, the worm 484 is rotatably supported by the lower fixing member 410 (around the axis of the worm 484).

  When the body portion 484a of the worm 484 is inserted into the shaft support hole 417a and the shaft support hole 418a and the rear end surface of the head portion 484b abuts against the front plate surface of the front shaft support plate 417, the body portion 484a of the worm 484 The portion of the outer peripheral surface where the thread groove is formed is disposed at a position sandwiched between the front shaft support plate 417 and the rear shaft support plate 418.

  A ring-shaped groove formed in the rear end portion of the outer peripheral surface of the body portion 484 a of the worm 484 is disposed behind the plate surface on the rear side of the rear shaft support plate 418. By fitting an E ring (not shown) in the ring-shaped groove, the worm 484 is supported so as not to move in the front-rear direction (in the axial direction of the worm 484) with respect to the lower fixing member 410.

  As shown in FIGS. 40 and 46, when the worm 484 is rotatably supported by the lower fixing member 410, the plurality of helical teeth formed on the outer peripheral portion of the gear portion 483 a of the worm wheel 483 are the body portion of the worm 484. It meshes with the thread groove formed in 484a.

In the present embodiment, the combination of the worm wheel 483 and the worm 484 functions as a rotation angle changing member according to the present invention.
That is, the combination of the worm wheel 483 and the worm 484 is an embodiment of the rotation angle changing member according to the present invention.

  As shown in FIG. 38, the urging force generated by the pair of springs 60, 60, that is, the pair of springs 60, 60 elastically deformed in the compression direction is in the original shape (shape when no external force is applied). The first slider 40 is biased in a direction approaching the cam member 480 in the longitudinal direction of the intermediate member 20 by the force (elastic force) to return, and the second slider 50 is a pressure receiving pin in the longitudinal direction of the intermediate member 20. It is urged in the direction approaching 73.

Therefore, as shown in FIG. 38, the cam contact surface 41 of the first slider 40 contacts the contact surface 481b of the contact member 481 of the cam member 480, and the pressure receiving pin support surface 52 of the second slider 50 is the pressure receiving pin. 73 abuts against the outer peripheral surface of 73.
As a result, due to the biasing force generated by the pair of springs 60, 60, the intermediate member 20 (and thus one embodiment of the second wing member according to the present invention) is opened with respect to the lower fixing member 410 (in this embodiment). The upper fixing member 30 is biased so as to rotate counterclockwise when viewed from the right side, and the upper fixing member 30 is rotated counterclockwise when viewed from the right side in the present embodiment. Urged to rotate in the direction).

In the present embodiment, when the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction machine 1 is in the range from 0 ° to φ ° (when 0 ° ≦ θ ≦ φ °), the upper fixing member 30 The rotational force for closing the hinge 400 due to the weight of the fixed original cover 3 and the rotational force for opening the hinge 400 due to the urging force of the pair of springs 60 and 60 are approximately. The shape or the like of the cam contact surface 41 of the first slider 40 is determined in advance so as to be balanced.
With this configuration, when the operator releases his or her hand from the original pressure plate 3 when the rotation angle θ of the original pressure plate 3 with respect to the main body 2 of the multifunction machine 1 is in the range of 0 ° to φ °, The rotation angle θ is maintained.

In this embodiment, when the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction machine 1 is in the range from φ ° to 90 ° (when φ ° <θ ≦ 90 °), the first slider The rotation pin support surface 42 of the 40 is in contact with the outer peripheral surface of the first rotation pin 71 and the movement of the first slider 40 in the direction approaching the cam member 480 is restricted, and the cam of the first slider 40 The contact surface 41 is separated from the contact surface 481 b of the contact member 481 of the cam member 480.
Since the cross-sectional shape of the first rotation pin 71 of the present embodiment in the plane perpendicular to the axial direction is circular, the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction machine 1 is from φ ° to 90 °. Even if it changes within the range, the position of the first slider 40 relative to the intermediate member 20 (as long as the rotational angle of the upper fixing member 30 relative to the intermediate member 20 does not change), and thus the total length of the pair of springs 60 and 60 ( The biasing force generated by the pair of springs 60 and 60 does not change (see FIG. 48).

Therefore, when the rotation angle θ of the original cover 3 relative to the main body 2 of the multifunction device 1 is in the range of φ ° to 90 ° (strictly speaking, the first is due to the biasing force of the pair of springs 60 and 60). A frictional force acts on the contact portion between the rotating pin support surface 42 of the slider 40 and the outer peripheral surface of the first rotating pin 71), but the urging force of the pair of springs 60 and 60 is substantially the first slider. No longer acts on the cam member 480 via 40, and as a result, the rotational force for opening the hinge 400 due to the biasing force of the pair of springs 60, 60 does not act on the hinge 400.
Note that the value of φ may slightly vary as a result of adjusting the urging force of a pair of springs 60 and 60 by a cam member 480 described later.

  Hereinafter, adjustment of the urging force of the pair of springs 60 and 60 by the cam member 480 will be described with reference to FIG.

46A, when a tool is fitted in a hole formed in the head 484b of the worm 484 and the worm 484 is rotated counterclockwise when viewed from the front, the worm wheel meshes with the worm 484. 483 rotates counterclockwise around the cam shaft when viewed from the right side.
As a result, the contact member 481 rotates together with the worm wheel 483 counterclockwise around the cam shaft when viewed from the right side, and shifts to the state shown in FIG.

The position shown in FIG. 46A and the state shown in FIG. 46B are different from each other in the position of the contact member 481 with respect to the lower fixing member 410. Therefore, the rotation of the original cover 3 relative to the main body 2 of the multifunction machine 1 is different. “The relative position of the first slider 40 in contact with the contact member 481 relative to the intermediate member 20 (and thus the pair of springs 60) when the moving angle θ (and hence the rotation angle of the intermediate member 20 with respect to the lower fixing member 410) is the same. -60 total length) "is different.
That is, by rotating the worm 484 around the axis of the worm 484, the position of the abutting member 481 with respect to the lower fixing member 410 is changed (adjusted), and consequently the urging force of the pair of springs 60 and 60 is changed (adjusted). It is possible.

As described above, the hinge 400 is
A lower fixing member 410 fixed to the main body 2 of the multifunction machine 1;
A cam member 480 supported by the lower fixing member 410 so that the position relative to the lower fixing member 410 can be changed and fixed;
A second wing member rotatably connected to the lower fixing member 410 and fixed to the document pressing plate 3 of the multifunction machine 1 (in this embodiment, the intermediate member 20, the upper fixing member 30, the second slider 50, the first slider). A combination of the two rotating pins 72 and the pressure receiving pins 73);
A first slider 40 that is movable in a direction approaching the cam member 480 and a direction away from the cam member 480 while being supported by the second wing member;
A pair of springs 60 and 60 that abut the first slider 40 against the cam member 480 by urging the first slider 40 in a direction approaching the cam member 480;
It comprises.
With this configuration, the biasing force of the pair of springs 60 and 60 is not involved without removing the hinge 400 from the main body 2 and the original cover 3 of the multifunction machine 1 or exchanging the pair of springs 60 and 60. Can be easily adjusted.

The cam member 480 of the hinge 400 is
Both end portions are supported by the lower fixing member 410, and a contact member 481 having a contact surface 481b formed in the middle portion;
It is possible to change the rotation angle around the “cam shaft of the abutting member 481 relative to the lower fixing member 410” and to fix the rotation angle around the “cam axis of the abutting member 481 relative to the lower fixing member 410” after the change. A possible rotation angle changing member (in this embodiment, a combination of the worm wheel 483 and the worm 484);
Comprising
The “cam shaft of the abutting member 481 with respect to the lower fixing member 410” is parallel to the rotation axis of the second wing member with respect to the lower fixing member 410 (the first rotation pin 71 in this embodiment), and the through hole 415L. -It corresponds to the straight line passing through 415R and the straight line passing through the center O6 of the shaft support member 482 supported by the lower fixing member 410 and the center O8 of the worm wheel 483 supported by the lower fixing member 410.
The abutting member 481 of the hinge 400 is pivotally supported by the lower fixing member 410 so as to be rotatable around “the cam shaft of the abutting member 481 with respect to the lower fixing member 410”.
The rotation angle changing member in the hinge 400 is
A worm wheel 483 fixed to the contact member 481 so as not to be relatively rotatable;
A worm 484 rotatably supported by the lower fixing member 410 and meshing with the worm wheel 483;
It comprises.
With this configuration, it is possible to change the position of the contact member 481 with respect to the lower fixing member 410 simply by rotating the worm 484.

In this embodiment, the worm wheel 483 directly meshes with the worm 484, but the present invention is not limited to this.
For example, another gear that meshes with the worm wheel 483 and the worm 484 may be provided. In this case, the reduction ratio between the worm wheel 483 and the worm 484 can be changed by appropriately selecting the number of teeth of the other gear.
Further, by using a plurality of bevel gears or the like as another gear, the axial direction of the worm 484 can be set to a direction different from the direction perpendicular to the rotation axis (cam shaft) of the worm wheel 483. .

Further, the first rotation pin 71 provided in the hinge 400 is a second wing member (in the present embodiment, the intermediate member 20, and the second wing member) when the original cover 3 is closed with respect to the main body 2 of the multifunction machine 1. The upper fixing member 30, the second slider 50, the second rotation pin 72, and the pressure receiving pin 73 are combined in a predetermined direction in the direction of opening with respect to the first wing member (in this embodiment, the lower fixing member 410). A direction in which the first slider 40 approaches the cam member 480 by abutting against the first slider 40 when it rotates more than an angle (in the case of the present embodiment, when the rotation angle θ becomes larger than φ °). The first slider 40 is separated from the cam member 480.
With this configuration, when the second wing member of the hinge 400 is rotated with respect to the first wing member of the hinge 400 and the rotation angle θ becomes larger than φ °, the cam member 480 includes The biasing force of the pair of springs 60 and 60 does not act.
Therefore, when the rotation angle θ is larger than φ °, the work of moving the contact member 481 relative to the lower fixing member 410 is facilitated by rotating the worm 484 (the work of rotating the worm 484). It does n’t require a lot of power to do).

  In the present embodiment, when the rotation angle θ is larger than φ °, the first rotation pin 71 contacts the first slider 40 and the first slider 40 is separated from the cam member 480. It is desirable that the “predetermined angle” when the is in contact with the slide member is appropriately selected according to the use of the hinge according to the present invention.

1 Multifunction machine 2 Main body (first connection object)
3 Original pressure plate (second connection object)
20 Intermediate member (part of the second wing member)
30 Upper fixing member (part of the second wing member)
40 First slider (sliding member)
50 Second slider (part of the second wing member)
60/60 Spring (Biasing member)
71 First rotation pin (rotation shaft)
72 Second rotation pin (part of second wing member)
73 Pressure receiving pin (part of the second wing member)
110 Lower fixing member (first wing member)
114L and 114R A pair of first elongated holes 180 Cam member 181 Abutting member 181a Abutting surface 183 Moving member 186L and 186R A pair of second elongated holes 189 Moving position adjusting screw (moving position adjusting member)

Claims (17)

A first wing member fixed to the first connection object;
A cam member supported by the first wing member;
A second wing member that is pivotally coupled to the first wing member and fixed to the second coupling object;
A slide member movable in a direction approaching the cam member and a direction away from the cam member while being supported by the second wing member;
A biasing member for biasing the slide member against the cam member by biasing the slide member in a direction approaching the cam member;
Comprising
The cam member can change and fix the distance from the opposite end of the biasing member in the axial direction of the biasing member when the second wing member and the first wing member are closest to each other. Supported by the first wing member ,
The cam member is
A contact member having both end portions penetrating into a pair of first elongated holes formed in the first wing member, and a contact surface which is a surface contacting the slide member formed in the middle portion;
A movable member supported to be movable in a predetermined movement direction with respect to the first wing member, a pair of second long holes are formed, and the pair of second long holes are inserted into the contact member; ,
A moving position adjusting member capable of changing a moving position that is a position in the moving direction of the moving member with respect to the first wing member and fixing the moving member to the first wing member;
Comprising
The longitudinal direction of the pair of first elongated holes, the longitudinal direction of the pair of second elongated holes, and the moving direction are all perpendicular to the axial direction of the rotation axis of the second wing member with respect to the first wing member. And
The longitudinal direction of the pair of second long holes is inclined with respect to the moving direction,
The longitudinal direction of the pair of first elongated holes is inclined with respect to the longitudinal direction of the pair of second elongated holes;
Hinge. The moving position adjusting member is
Screwed to one of the first wing member or the moving member,
The other of the first wing member or the moving member is supported so as not to be relatively movable in the axial direction of the moving position adjusting member and to be rotatable around the axis of the moving position adjusting member,
An axial direction of the moving position adjusting member is parallel to the moving direction;
The hinge according to claim 1 . When the second wing member is rotated by a predetermined angle or more in the opening direction with respect to the first wing portion with reference to the time when the second connection object is closed with respect to the first connection object, A slide restricting member that restricts the slide member from moving in a direction approaching the cam member by contacting the slide member, and separates the slide member from the cam member;
The hinge according to claim 1 or 2 . The slide regulating member is
Which also serves as a rotation axis of the second wing member relative to the first wing member,
The hinge according to claim 3 . A first wing member fixed to the first connection object;
A cam member supported by the first wing member;
A second wing member that is pivotally coupled to the first wing member and fixed to the second coupling object;
A slide member movable in a direction approaching the cam member and a direction away from the cam member while being supported by the second wing member;
A biasing member for biasing the slide member against the cam member by biasing the slide member in a direction approaching the cam member;
Comprising
The cam member can change and fix the distance from the opposite end of the biasing member in the axial direction of the biasing member when the second wing member and the first wing member are closest to each other. Supported by the first wing member,
The cam member is
A pair of arm members rotatably coupled to the first wing member at one end;
Both ends are supported by the other ends of the pair of arm members, and a contact member in which a contact surface that is a surface that contacts the slide member is formed in the middle part;
An arm angle adjusting member for fixing the pair of arm members to the first wing member so that the arm angle, which is the rotation angle of the pair of arm members with respect to the first wing member, can be changed and fixed;
A hinge comprising: The arm angle adjusting member is
In the first wing member, the first wing member is inserted into one of a plurality of wing side through holes formed at a position equidistant from the rotation center of the pair of arm members, and formed in the pair of arm members. It is a pin that penetrates the arm member side through hole to be made,
The hinge according to claim 5 . The first wing member is formed with an arcuate support surface centering on a rotation axis of the pair of arm members with respect to the first wing member,
The contact member contacts the support surface;
The hinge according to claim 5 or 6 . The support surface is an inner peripheral surface of a support hole that is an arc-shaped long hole centered on the arm axis,
The contact member is inserted into the support hole;
The hinge according to claim 7 . When the second wing member is rotated by a predetermined angle or more in the opening direction with respect to the first wing portion with reference to the time when the second connection object is closed with respect to the first connection object, A slide restricting member that restricts the slide member from moving in a direction approaching the cam member by contacting the slide member, and separates the slide member from the cam member;
The hinge according to any one of claims 5 to 8 . The slide regulating member is
Which also serves as a rotation axis of the second wing member relative to the first wing member,
The hinge according to claim 9 . A first wing member fixed to the first connection object;
A cam member supported by the first wing member;
A second wing member that is pivotally coupled to the first wing member and fixed to the second coupling object;
A slide member movable in a direction approaching the cam member and a direction away from the cam member while being supported by the second wing member;
A biasing member for biasing the slide member against the cam member by biasing the slide member in a direction approaching the cam member;
Comprising
The cam member can change and fix the distance from the opposite end of the biasing member in the axial direction of the biasing member when the second wing member and the first wing member are closest to each other. Supported by the first wing member,
The cam member is
Both end portions are supported by the first wing member, and a contact member in which a contact surface that is a surface that contacts the slide member is formed in the middle portion;
A rotation angle changing member capable of changing a rotation angle around the cam shaft of the contact member with respect to the first wing member and fixing the rotation angle around the cam shaft after the change;
Comprising
The camshaft is a hinge parallel to a pivot axis of the second wing member relative to the first wing member. The rotation angle changing member is detachably fitted in a fitting hole formed in the first wing member,
The contact member is fixed to the rotation angle changing member,
The rotation angle changing member is fitted in a fitting hole formed in the first wing member, a locking surface formed in the rotation angle changing member, and a fitting surface which is an inner peripheral surface of the fitting hole; The rotation angle changing member is fixed to the first wing member so as not to be relatively rotatable at two or more different rotation angles around the cam shaft.
When the rotation angle changing member is fitted in a fitting hole formed in the first wing member, the contact member is in contact with the first wing member at every two or more different rotation angles around the cam shaft. Placed in different positions,
The hinge according to claim 11 . The rotation angle changing member and the contact member are formed integrally.
The hinge according to claim 12 . The rotation angle changing member is detachably fitted in a fitting hole formed in the first wing member,
The abutting member has an axial direction parallel to the cam shaft when the rotation angle changing member is fitted in the fitting hole, and is rotatable about another axis shifted from the cam shaft. It is pivotally supported by the angle change member,
The rotation angle changing member is fitted in a fitting hole formed in the first wing member, a locking surface formed in the rotation angle changing member, and a fitting surface which is an inner peripheral surface of the fitting hole; The rotation angle changing member is fixed to the first wing member so as not to be relatively rotatable at two or more different rotation angles around the cam shaft.
When the rotation angle changing member is fixed to the first wing member, the contact member is disposed at a different position with respect to the first wing member at every two or more different rotation angles around the cam shaft.
The hinge according to claim 11 . The contact member is pivotally supported by the first wing member so as to be rotatable around the cam shaft,
The rotation angle changing member is
A worm wheel fixed to the abutting member so as not to be relatively rotatable;
A worm rotatably supported by the first wing member and meshing with the worm wheel;
Comprising
The hinge according to claim 11 . When the second wing member is rotated by a predetermined angle or more in the opening direction with respect to the first wing portion with reference to the time when the second connection object is closed with respect to the first connection object, A slide restricting member that restricts the slide member from moving in a direction approaching the cam member by contacting the slide member, and separates the slide member from the cam member;
The hinge according to any one of claims 11 to 15 . The slide regulating member is
Which also serves as a rotation axis of the second wing member relative to the first wing member,
The hinge according to claim 16 .

Images