JP5706166B2 - Hinge - Google Patents

Description

  The present invention relates to a hinge that rotatably connects one of two objects (first connection object) to the other (second connection object).

  Conventionally, a first fixing member fixed to one of the two objects (first connection object), a second fixing member fixed to the other of the two objects (second connection object), and a first There is known a hinge that includes a rotation shaft that rotatably connects a fixing member and a second fixing member, and rotatably connects the other to one of two objects.

Further, when a rotational force of a predetermined magnitude or more is applied, the second fixing member is allowed to rotate with respect to the first fixing member, and when a rotational force of less than a predetermined magnitude is applied, the first fixing member A hinge is also known in which the rotation of the second fixing member relative to the first fixing member is restricted (the rotation angle of the second fixing member relative to the first fixing member is maintained).
For example, it is like the hinge described in Patent Document 1.

The hinge (torque hinge) described in Patent Document 1 is an elastic means including a pair of blades (corresponding to a first fixing member and a second fixing member), a side cut bolt (corresponding to a rotating shaft), and a disc spring washer. A friction force generating member made of a metal washer and a holding member made of a nut are provided, and a torque (a pair of side cut bolts with respect to the side cut bolt) is generated between the metal washer (and side cut bolt) and the pair of blades by the elastic force of the disc spring washer. Force to restrict the rotation of the blades).
More specifically, a male thread is formed on the outer peripheral surface of the side cut bolt, and a pair of parallel surfaces extending from one end portion to the other end portion of the side cut bolt by cutting (locking) Surface) is formed. Further, a hole for inserting a side cut bolt is formed in the metal washer. The shape of the hole is similar to the cross-sectional shape of the side cut bolt (a shape in which a pair of arcs and a pair of parallel lines are alternately connected).
When the side cut bolt is inserted into the disc spring washer and the metal washer, the locking surface of the side cut bolt engages the part corresponding to the pair of parallel lines in the insertion hole of the metal washer, so the metal washer is side cut. The bolt is locked so as not to rotate relative to the bolt.
Further, when a nut is screwed onto the side cut bolt, the disc spring washer placed at a position sandwiched between the metal washer and the nut is elastically deformed in the direction of compression, and the elastic force of the disc spring washer (the elastically deformed disc spring washer is A frictional force is generated between the metal washer and the pair of blades due to the force of returning to the original shape.

  In addition, a hole having a bottom with a predetermined depth is formed on the end surface of the rotating shaft, and the end of the rotating shaft is subjected to caulking so that the elastic member cannot be detached from the rotating shaft and the hinge is There is also known a technique for reducing the number of components to be formed (no need for a nut in Patent Document 1). For example, as described in Patent Document 2.

  In addition, wiring for exchanging electrical signals or power between the first connection object and the second connection object, or fluid (liquid, gas, etc.) between the first connection object and the second connection object There is also known a hinge in which a through-hole for passing a pipe for exchanging a mixture thereof or the like is formed on a rotating shaft.

However, a through-hole having a circular cross-section for passing wiring or the like is formed on the rotating shaft, and a pair of parallel surfaces (locking surfaces) extending from one end to the other end are formed on the outer peripheral surface of the rotating shaft. Thus, the member inserted into the rotating shaft can be locked to the rotating shaft so as not to rotate, and the end portion of the rotating shaft is crimped to turn the member inserted into the rotating shaft into the rotating shaft. The following problems occur when it is impossible to drop out of the box.
That is, when a pair of parallel surfaces (locking surfaces) are formed on the outer peripheral surface of the rotation shaft from one end portion to the other end portion of the rotation shaft, the thickness of the end portion of the rotation shaft is the rotation shaft. Are not constant in the circumferential direction, and the thickness of the portion corresponding to the pair of parallel surfaces (locking surfaces) is small (thin), and the thickness of the portion not corresponding to the pair of parallel surfaces (locking surfaces) is large. (thick).
As described above, when the end portion of the rotating shaft whose thickness is not constant in the circumferential direction is subjected to caulking, the amount of plastic deformation of the end portion becomes uneven in the circumferential direction of the rotating shaft, and the thickness is particularly thin. A “crack” is likely to occur in the portion.
As an easy method for preventing such “cracking”, there is a method of sufficiently increasing the thickness of the rotating shaft in which the through-hole is formed to such an extent that cracking does not occur. Since the inner diameter of the through hole becomes smaller than that of the above, it is disadvantageous in terms of downsizing (resource saving) of the rotating shaft, which is not desirable.

JP 2008-151212 A Japanese Patent Laid-Open No. 11-270214

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 end of the shaft member in which the shaft through-hole penetrating from one end to the other end is formed without being “cracked”. And providing a hinge capable of locking a member supported by the shaft member so as not to fall off by caulking so as not to rotate relative to the shaft member.

  Hereinafter, means for solving the problems to be solved by the present invention will be described.

That is, in claim 1,
A hinge for pivotally connecting the first connection object to the second connection object,
A shaft member fixed to the first connection object;
A pivot member pivotally supported by the shaft member and fixed to the second connection object;
An elastic member formed with an insertion hole through which the shaft member is inserted;
A holding member having an insertion hole through which the shaft member is movably inserted in the axial direction of the shaft member;
Comprising
The shaft member is formed with a shaft through hole penetrating in the axial direction of the shaft member from one end portion to the other end portion of the shaft member,
The shaft member is
A cylindrical pressing side crimping portion that forms one end of the shaft member, and the thickness from the outer peripheral surface to the inner peripheral surface of the shaft through hole is constant in the circumferential direction of the shaft member;
A pressing-side locking portion that forms a cylindrical portion that continues to the pressing-side crimping portion in the axial direction of the shaft member, and that has a pressing-side locking protrusion that protrudes in the radial direction of the shaft member on the outer peripheral surface; ,
A portion that is continuous with the pressing side locking portion in the axial direction of the shaft member and that is on the opposite side of the pressing side locking portion with the pressing side locking portion interposed therebetween, and a portion on which the rotating member is pivotally supported. A shaft support,
With
A holding-side locking groove is formed on the inner peripheral surface of the insertion hole of the pressing member,
When the pressing-side locking portion of the shaft member is inserted into the insertion hole of the pressing member, the pressing-side locking protrusion engages with the pressing-side locking groove, so that the pressing member rotates relative to the shaft member. Locked in impossible
The pressing side caulking is performed in a state where the rotating member is pivotally supported by the shaft supporting portion of the shaft member and the pressing side locking portion of the shaft member is inserted through the insertion hole of the elastic member and the insertion hole of the pressing member. The pressing side caulking part plastically deformed by the caulking process pushes the pressing member in the axial direction of the shaft member and in the direction in which the pressing member approaches the elastic member. Abuts against the elastic member and pushes the elastic member in the axial direction of the shaft member and in the direction of compression, the elastic member elastically deforms, and the elastic member moves between the shaft member and the rotating member. A frictional force based on an elastic force is generated, a torque against the rotation of the rotating member with respect to the shaft member is generated, and the pressing side caulking portion plastically deformed includes the rotating member, the elastic member, and The serial pressing member to fall off non supported from said shaft member,
A fixing member that fixes the shaft member to the first connection object by being fixed to the shaft member and the first connection object;
The shaft member is
A portion that is continuous with the shaft support portion in the axial direction of the shaft member and that is on the opposite side of the pressing side locking portion with the shaft support portion interposed therebetween, forms a cylindrical portion, and an outer peripheral surface of the shaft member A fixed-side locking portion in which a fixed-side locking protrusion protruding in the radial direction is formed;
A portion that is connected to the fixed-side locking portion in the axial direction of the shaft member and that is on the opposite side of the shaft support portion across the fixed-side locking portion, forms the other end of the shaft member, and has an outer peripheral surface. A cylindrical fixed side caulking portion in which the thickness from the inner peripheral surface of the shaft through hole is constant in the circumferential direction of the shaft member;
With
The fixing member is formed with an insertion hole through which the shaft member is inserted,
A fixed-side locking groove is formed on the inner peripheral surface of the insertion hole of the fixing member,
When the fixed-side locking portion of the shaft member is inserted into the insertion hole of the fixed member, the fixed-side locking protrusion is fitted into the fixed-side locking groove, so that the fixed member rotates relative to the shaft member. Locked in impossible
The fixed-side caulking portion plastically deformed by the caulking process is fixed to the fixed-side caulking portion by caulking the fixed-side caulking portion in a state where the fixed-side locking portion of the shaft member is inserted into the insertion hole of the fixing member. The member is supported so as not to fall off from the shaft member,
A spacer member having a pair of end surfaces, an outer peripheral surface and an inner peripheral surface, formed in a short cylindrical shape in the axial direction, and having an insertion hole penetrating the pair of end surfaces,
The spacer member is inserted between the fixing member and the rotating member, the shaft member is inserted into the insertion hole of the spacer member, and the spacer member rotates relative to the fixing member and the shaft member. It is locked impossible .

In claim 2,
A frictional force generating member having an insertion hole through which the shaft member is inserted;
A second pressing side locking groove is formed on the inner peripheral surface of the insertion hole of the frictional force generating member,
When the pressing side locking portion of the shaft member is inserted through the insertion hole of the frictional force generating member, the pressing side locking projection is fitted into the second pressing side locking groove, whereby the frictional force generating member is The shaft member is locked so as not to rotate relative to the shaft member,
The rotating member is pivotally supported by the shaft support portion of the shaft member, and the pressing side locking portion of the shaft member is inserted into the insertion hole of the frictional force generating member, the insertion hole of the elastic member, and the insertion hole of the pressing member. By caulking the pressing side caulking portion in the inserted state, the pressing side caulking portion plastically deformed by the caulking processing causes the pressing member to move in the axial direction of the shaft member and the pressing member to the elastic member. The elastic member is pushed in the approaching direction, the pressing member abuts on the elastic member and pushes the elastic member in the axial direction of the shaft member and in the compressed direction, the elastic member elastically deforms, and the elastic member The generating member is pushed in the axial direction of the shaft member and in a direction in which the frictional force generating member approaches the rotating member, and the frictional force generating member comes into contact with the rotating member and rotates with the shaft member. A frictional force based on the elastic force of the elastic member is generated between the elastic member, a torque against the rotation of the rotating member with respect to the shaft member is generated, and the pressing side caulking portion that has been plastically deformed is rotated. The member, the frictional force generating member, the elastic member, and the pressing member are supported so as not to be detached from the shaft member.

In claim 3 ,
The fixing member and the first connection object are integrally formed.

In claim 4 ,
The rotating member and the second connection object are integrally formed.

  In the present invention, it is possible to apply a caulking process without causing “cracking” in the holding side locking portion of the shaft member in which the shaft through hole penetrating from one end portion to the other end portion is formed. There is an effect that the pressing member supported by the shaft member so as not to fall off by processing can be locked to the shaft member so as not to rotate relative to the shaft member.

The perspective view from upper left front which shows one Embodiment of the hinge which concerns on this invention. (A) The front view which shows one Embodiment of the hinge concerning this invention, (b) The rear view which shows one Embodiment of the hinge concerning this invention. (A) The left view which shows one Embodiment of the hinge which concerns on this invention, (b) The right view which shows one Embodiment of the hinge which concerns on this invention. (A) The top view which shows one Embodiment of the hinge concerning this invention, (b) The bottom view which shows one Embodiment of the hinge concerning this invention. The disassembled perspective view which shows one Embodiment of the hinge which concerns on this invention. Front sectional drawing which shows one Embodiment of the hinge which concerns on this invention before giving a crimping process to the pressing side crimping part and a fixed side crimping part (AA arrow sectional drawing of Fig.4 (a)). Front sectional drawing which shows one Embodiment of the hinge which concerns on this invention after giving the crimping process to the pressing side crimping part and the fixed side crimping part. (A) The perspective view from the upper left front which shows the shaft in one Embodiment of the hinge which concerns on this invention, (b) The perspective view from the lower right rear which shows the shaft in one Embodiment of the hinge concerning this invention. (A) The top view which shows the shaft in one Embodiment of the hinge concerning this invention, (b) The bottom view which shows the shaft in one Embodiment of the hinge concerning this invention. (A) Front view showing a shaft in one embodiment of a hinge according to the present invention, (b) Front sectional view showing a shaft in one embodiment of a hinge according to the present invention (B- in FIG. 9A) B arrow sectional view). (A) The perspective view from the upper left front which shows the fixed bracket in one Embodiment of the hinge which concerns on this invention, (b) The perspective view from the lower right rear which shows the fixed bracket in one Embodiment of the hinge concerning this invention . (A) The perspective view from the upper left front which shows the spacer in one Embodiment of the hinge which concerns on this invention, (b) The perspective view from the lower right rear which shows the spacer in one Embodiment of the hinge concerning this invention. (A) The perspective view from the upper left front which shows the rotation bracket in one Embodiment of the hinge which concerns on this invention, (b) From the lower right rear which shows the rotation bracket in one Embodiment of the hinge concerning this invention Perspective view. (A) The perspective view from the upper left front which shows the 1st washer in one Embodiment of the hinge which concerns on this invention, (b) The perspective from the upper left front which shows the 2nd washer in one Embodiment of the hinge concerning this invention Figure. (A) The perspective view from the upper left front which shows the disk spring in one Embodiment of the hinge which concerns on this invention, (b) The perspective view from the upper left front which shows the 3rd washer in one Embodiment of the hinge concerning this invention .

Below, with reference to drawings, hinge 1 which is one embodiment of the hinge concerning the present invention is explained.
The hinge 1 shown in FIG. 1 connects a 1st connection target object to a 2nd connection target object so that rotation is possible.
Here, the “first connection object” and the “second connection object” refer to two objects (articles) that are rotatably connected by the hinge according to the present invention.
Specific examples of the “first connection object” and the “second connection object” include two members constituting an electronic device.
Specific examples of the two members constituting the electronic apparatus include a register main body and an image display unit, a fundus camera main body and an external monitor, a document camera main body, a video camera support arm, and the like. The “first connection object” and the “second connection object” are not limited to the above specific examples.

  As shown in FIGS. 1 to 7, the hinge 1 includes a shaft 10, a fixing bracket 20, a spacer 30, a first washer 40, a rotating bracket 50, a second washer 60, a disc spring 71 and 72, and a third washer 80. .

In the following, for convenience, the “vertical direction (upward and downward)”, “front-rear direction (frontward and backward)” and “left-right direction (leftward) with reference to the axial direction of the shaft 10 in the hinge 1 assembled as shown in FIG. ”And“ right ”), and the shape of each member (each member included in the hinge 1) constituting the hinge 1 will be described using these directions.
More specifically, the vertical direction is defined as a direction parallel to the axial direction of the shaft 10 in the assembled hinge 1, the front-rear direction is defined as a direction perpendicular to the vertical direction, the vertical direction and the front-rear direction The left-right direction is defined as the direction perpendicular to both.
In addition, the up-down direction, the front-back direction, and the left-right direction defined here do not indicate the posture (orientation) when the hinge 1 is used. That is, the hinge 1 can be used in a posture (orientation) different from the posture shown in FIG.

Hereinafter, the shaft 10 will be described with reference to FIGS. 8 to 10.
The shaft 10 is an embodiment of the shaft member according to the present invention.
As shown in FIGS. 10A and 10B, the shaft 10 includes a pressing side caulking portion 11, a pressing side locking portion 12, a shaft support portion 13, a fixed side locking portion 14, and a fixed side caulking portion 15. Prepare.
More specifically, the shaft 10 is in the axial direction of the shaft 10, and more specifically, from the lower end portion (one end portion) to the upper end portion (the other end portion) of the shaft 10. The shaft support portion 13, the fixed side locking portion 14, and the fixed side crimping portion 15 are arranged side by side.

The shaft 10 of this embodiment is a die cast product (cast product) made of ZDC2 (JIS H 5301), which is a kind of zinc alloy, and includes a pressing side caulking portion 11, a pressing side locking portion 12, a shaft support portion 13, and a fixed side engagement. The stop part 14 and the fixed side crimping part 15 are integrally molded.
ZDC2 has less copper content than other zinc alloys such as ZDC1 (JIS H 5301), ZDC3 (JIS H 5301), and BERIC (trademark of Nisso Metal Chemical Co., Ltd.).
Therefore, ZDC2 has the characteristics that there are few cracks at the time of plastic deformation compared with other zinc alloys, and the aging deterioration of a mechanical property and the secular change of a dimension are small.

The shaft 10 is formed with a shaft through hole 16 penetrating in the axial direction of the shaft 10 from the lower end portion (one end portion) to the upper end portion (the other end portion) of the shaft 10.
The shaft through hole 16 is an embodiment of the shaft through hole according to the present invention. The axis of the shaft through hole 16 coincides with (is concentric with) the axis 5 of the shaft 10 (see FIG. 10B).
The shaft through-hole 16 includes, for example, wiring for exchanging electric power or an electric signal between the first connection object and the second connection object, and a fluid (liquid) between the first connection object and the second connection object. , Gas, or a mixture thereof) or the like.

The pressing side crimping portion 11 is an embodiment of the pressing side crimping portion according to the present invention.
As shown in FIG. 10A, the pressing side caulking portion 11 constitutes one end portion of the shaft 10 (the lower end portion in the present embodiment).
As shown in (b) of FIG. 8, (b) of FIG. 9, (a) of FIG. 10, and (b) of FIG. 10, the outer shape of the pressing side caulking portion 11 is substantially cylindrical.
More specifically, the shaft through hole 16 vertically penetrates the pressing side crimping portion 11, and the thickness from the inner peripheral surface of the shaft through hole 16 to the outer peripheral surface of the pressing side crimping portion 11 (the pressing side crimping portion 11. Is constant in the circumferential direction of the shaft 10.

As shown in FIGS. 9B and 10B, of the inner peripheral surface of the shaft through hole 16, one end portion (lower end portion) of the shaft through hole 16, more specifically, the pressing side caulking portion 11 is provided. A pressing side taper surface 16a is formed in the corresponding part.
The pressing side taper surface 16a increases in diameter toward the opening portion on the one end portion side of the shaft through hole 16.
That is, the distance from the pressing side taper surface 16a to the axis of the shaft 10 increases as it approaches one end of the shaft 10 (see FIG. 10B).

The pressing side locking portion 12 is an embodiment of the pressing side locking portion according to the present invention.
As shown in FIG. 10A, the pressing side locking portion 12 has a portion that continues to the pressing side crimping portion 11 in the axial direction of the shaft 10 (in this embodiment, a portion that continues to the upper side of the pressing side crimping portion 11). Make it.
As shown in FIGS. 8B, 9B, and 10A, the main body portion of the pressing side locking portion 12 has the same outer diameter as the pressing side caulking portion 11. This is a cylindrical shape.
More specifically, the shaft through-hole 16 vertically penetrates the holding-side locking portion 12, and the thickness from the inner peripheral surface of the shaft through-hole 16 to the outer peripheral surface of the main body portion of the pressing-side locking portion 12 ( The thickness of the main body portion of the pressing side locking portion 12 is constant in the circumferential direction of the shaft 10.

As shown in FIG. 9B, a total of four pressing side locking projections 12a, 12b, 12c, and 12d are formed on the outer peripheral surface of the main body portion of the pressing side locking portion 12.
The pressing side locking projections 12a, 12b, 12c, and 12d are one embodiment of the pressing side locking projection according to the present invention.
8 (b), FIG. 9 (b), and FIG. 10 (a), the pressing side locking projections 12a, 12b, 12c, and 12d of the present embodiment extend substantially in the axial direction of the shaft 10. It is a prismatic ridge.
As shown in FIG. 9B, the pressing-side locking projection 12 a is formed in “a portion corresponding to the left side of the outer peripheral surface of the main body portion of the pressing-side locking portion 12”. Projects to the left of the main body. The pressing-side locking projection 12 b is formed in “a portion corresponding to the right side of the outer peripheral surface of the main body portion of the pressing-side locking portion 12” and protrudes to the right of the main body portion of the pressing-side locking portion 12. The pressing-side locking protrusion 12 c is formed in “a portion corresponding to the front of the outer peripheral surface of the pressing-side locking portion 12” and protrudes forward of the main body portion of the pressing-side locking portion 12. The pressing-side locking projection 12 d is formed in “a portion corresponding to the rear of the outer peripheral surface of the main body portion of the pressing-side locking portion 12” and protrudes rearward of the main body portion of the pressing-side locking portion 12.
In this manner, the pressing side locking projections 12a, 12b, 12c, and 12d protrude in the radial direction of the shaft 10 (direction perpendicular to the axial direction of the shaft 10).

The shaft support 13 is an embodiment of the shaft support according to the present invention.
As shown in FIG. 10A, the shaft support portion 13 is connected to the pressing side locking portion 12 in the axial direction of the shaft 10 and is a portion on the opposite side of the pressing side crimping portion 11 with the pressing side locking portion 12 interposed therebetween ( In the case of the present embodiment, it forms a portion that continues to the upper side of the pressing side locking portion 12).
As shown in FIG. 8B and FIG. 10A, the main body portion of the shaft support portion 13 has an outer diameter that is the outer diameter of the main body portion of the holding side locking portion 12 (and thus the outer side of the holding side caulking portion 11). It has a cylindrical shape that is the same as (diameter).
More specifically, the shaft through-hole 16 vertically penetrates the shaft support portion 13, and the thickness from the inner peripheral surface of the shaft through hole 16 to the outer peripheral surface of the main body portion of the shaft support portion 13 (the main body portion of the shaft support portion 13). Is constant in the circumferential direction of the shaft 10.

As shown in FIGS. 8 (a), 8 (b) and 10 (a), the outer peripheral surface of the main body portion of the shaft support portion 13 has a pressing side flange 13a, a fixed side flange 13b, and a total of four ribs. 13c, 13d, 13e, and 13f are formed.
The holding-side flange 13a is a substantially disk-shaped portion having a pair of upper and lower disk surfaces and an outer peripheral end surface. The pressing side flange 13 a protrudes outward in the radial direction of the shaft 10 from one end portion (a portion serving as a boundary with the pressing side locking portion 12) on the outer peripheral surface of the main body portion of the shaft support portion 13.
The fixed-side flange 13b is a generally disk-shaped portion having a pair of upper and lower disk surfaces and an outer peripheral end surface. The fixed-side flange 13b protrudes outward in the radial direction of the shaft 10 from the other end (the portion serving as a boundary with the fixed-side locking portion 14 described later) on the outer peripheral surface of the main body portion of the shaft support portion 13.
The ribs 13c, 13d, 13e, and 13f are rectangular plate-like portions.
The ribs 13c, 13d, 13e, and 13f protrude outward in the radial direction of the shaft 10 from a portion sandwiched between the pressing side flange 13a and the fixed side flange 13b on the outer peripheral surface of the main body portion of the shaft support portion 13.
More specifically, the rib 13c protrudes from the “part corresponding to the left of the outer peripheral surface of the main body portion of the shaft support portion 13” to the left of the main body portion of the shaft support portion 13, and the rib 13d is “the main body portion of the shaft support portion 13”. The rib 13e protrudes from the "part corresponding to the right side of the outer peripheral surface of the shaft support part 13" to the right of the main body part of the shaft support part 13, and the rib 13e extends from the "part corresponding to the front of the outer peripheral surface of the body part of the shaft support part 13". The rib 13f protrudes from the “part corresponding to the rear of the outer peripheral surface of the main body portion of the shaft support portion 13” to the rear of the main body portion of the shaft support portion 13.
One end portions of the ribs 13c, 13d, 13e, and 13f in the axial direction of the shaft 10 are connected to the plate surface of the holding flange 13a, and the other end portions of the ribs 13c in the axial direction of the shaft 10 are connected to the plate surface of the fixed flange 13b. ing.
The protruding end surfaces of the ribs 13c, 13d, 13e, and 13f (radially outward end surfaces of the shaft 10) are flush with the outer peripheral end surface of the pressing flange 13a and the outer peripheral end surface of the fixed flange 13b.
That is, the protruding end surfaces of the ribs 13 c, 13 d, 13 e, and 13 f, the outer peripheral end surface of the pressing flange 13 a, and the outer peripheral end surface of the fixed flange 13 b are on the outer peripheral surface of a virtual cylinder centering on the axis 5 of the shaft 10. Placed in.

The fixed side locking portion 14 is an embodiment of the fixed side locking portion according to the present invention.
As shown in FIG. 10A, the fixed side locking portion 14 is connected to the shaft support portion 13 in the axial direction of the shaft 10 and is a portion on the opposite side of the pressing side locking portion 12 with the shaft support portion 13 interposed therebetween (this embodiment). In the case of a form, it forms the part which continues above the shaft support part 13).
As shown in FIGS. 8 (a), 9 (a), and 10 (a), the main body portion of the fixed-side locking portion 14 has an outer diameter that is the outer diameter of the main body portion of the shaft support portion 13 (as a result). It has a cylindrical shape that is the same as the outer diameter of the main body portion of the pressing side locking portion 12 and the outer diameter of the pressing side crimping portion 11.
More specifically, the shaft through-hole 16 vertically penetrates the fixed side locking portion 14, and the thickness from the inner peripheral surface of the shaft through hole 16 to the outer peripheral surface of the main body portion of the fixed side locking portion 14 ( The thickness of the main body portion of the fixed-side locking portion 14 is constant in the circumferential direction of the shaft 10.

As shown in FIG. 9A, a total of two fixed-side locking protrusions 14 a and 14 b are formed on the outer peripheral surface of the fixed-side locking portion 14. The fixed side locking projections 14a and 14b are one embodiment of the fixed side locking projection according to the present invention.
As shown in FIGS. 8 (a), 9 (a), and 10 (a), the fixed-side locking projections 14a and 14b of the present embodiment are generally prismatic projections extending in the axial direction of the shaft 10. Article.
As shown in FIG. 9A, the fixed side locking protrusion 14 a is formed in “a portion corresponding to the left side of the outer peripheral surface of the main body portion of the fixed side locking portion 14”. Projects to the left of the main body. The fixed-side locking protrusion 14 b is formed in “a portion corresponding to the right side of the outer peripheral surface of the main body portion of the fixed-side locking portion 14” and protrudes to the right of the main body portion of the fixed-side locking portion 14.
In this way, the fixed-side locking protrusions 14a and 14b protrude in the radial direction of the shaft 10 (direction perpendicular to the axial direction of the shaft 10).

The fixed side crimping portion 15 is an embodiment of the fixed side crimping portion according to the present invention.
As shown in FIG. 10A, the fixed caulking portion 15 forms the other end of the shaft 10 (in this embodiment, the upper end).
More specifically, the fixed caulking portion 15 is connected to the fixed side locking portion 14 in the axial direction of the shaft 10 and is a portion on the opposite side of the shaft support portion 13 with the fixed side locking portion 14 interposed therebetween (in the case of this embodiment). , A portion connected to the upper side of the fixed side locking portion 14).
As shown in FIGS. 8 (a), 9 (a), 10 (a), and 10 (b), the fixed caulking portion 15 has a generally cylindrical shape.
More specifically, the shaft through-hole 16 vertically penetrates the fixed-side crimping portion 15, and the thickness from the inner peripheral surface of the shaft through-hole 16 to the outer peripheral surface of the fixed-side crimping portion 15 (fixed-side crimping portion 15 Is constant in the circumferential direction of the shaft 10.

As shown in FIGS. 9A and 10B, of the inner peripheral surface of the shaft through hole 16, the other end (upper end) of the shaft through hole 16, more specifically, the fixed side caulking portion 15 is used. A fixed-side tapered surface 16b is formed in a portion corresponding to.
The fixed-side tapered surface 16b increases in diameter toward the opening portion on the other end side of the shaft through hole 16. That is, the distance from the fixed-side tapered surface 16b to the axis 5 of the shaft 10 increases as it approaches the other end of the shaft 10 (see FIG. 10B).

Hereinafter, the fixing bracket 20 will be described with reference to FIG.
The fixing bracket 20 is an embodiment of the fixing member according to the present invention.
The fixed bracket 20 includes a main body portion 21 and a bent portion 26.
The fixing bracket 20 of the present embodiment is a member made of a steel plate, and is manufactured by subjecting the steel plate to appropriate machining such as bending and drilling.
The main body 21 is a plate-like portion having a pair of upper and lower plate surfaces, and constitutes the main structure of the fixed bracket 20.

  The body portion 21 is formed with an insertion hole 22, locking holes 23 and 24, and through holes 25a, 25b, 25c, 25d, and 25e.

The insertion hole 22 is an embodiment of the “insertion hole of the fixing member” according to the present invention.
The insertion hole 22 is a hole through which the shaft 10 is inserted into the fixed bracket 20 (see FIG. 6). To penetrate.
Fixed side locking grooves 22 a and 22 b are formed on the inner peripheral surface of the insertion hole 22. The fixed side locking grooves 22a and 22b are one embodiment of the fixed side locking groove according to the present invention.
The fixed-side locking groove 22a of the present embodiment is formed in “a portion corresponding to the left side on the inner peripheral surface of the insertion hole 22”, and the fixed-side locking groove 22b is “right on the inner peripheral surface of the insertion hole 22”. Corresponding part "is formed.

The locking holes 23 and 24 are holes for locking the spacer 30, which will be described in detail later, to the fixed bracket 20 so as not to rotate relative to each other, and penetrate the pair of upper and lower plate surfaces of the main body 21 vertically.
The locking hole 23 is arranged at a position on the right front side of the insertion hole 22, and the locking hole 24 is arranged at a position on the left rear side of the insertion hole 22.

The through holes 25a, 25b, 25c, 25d, and 25e are holes for fixing the fixing bracket 20 to a first connection object (not shown) (for example, a main body of a register, a main body of a fundus camera, a main body of a document camera, etc.). Then, the pair of upper and lower plate surfaces of the main body 21 are vertically penetrated.
The through hole 25a is disposed at a position slightly in front of the insertion hole 22 and slightly to the left, the through hole 25b is disposed at a position slightly in front of the insertion hole 22 and slightly to the right, and the through hole 25c is disposed slightly behind the insertion hole 22 and slightly to the left. The through-hole 25d is arranged at a position slightly behind the insertion hole 22 and slightly to the right, and the through-hole 25e is arranged at a position slightly to the right of and slightly behind the insertion hole 22.

The bent portion 26 has a pair of front and rear plate surfaces and is a substantially rectangular plate-like portion that is long in the left-right direction. The upper end portion of the bent portion 26 is continuous with the rear end portion of the main body portion 21.
Through holes 26 a and 26 b are formed in the bent portion 26. The through holes 26a and 26b are holes for fixing the fixing bracket 20 to a first connection object (not shown), and pass through a pair of front and rear plate surfaces of the bent portion 26 in the front-rear direction.
The through hole 26 a is disposed at the left end portion of the bent portion 26, and the through hole 26 b is disposed at the right end portion of the bent portion 26.

  By inserting bolts (not shown) in the through holes 25a, 25b, 25c, 25d, 25e and the through holes 26a, 26b, and screwing these bolts into the screw holes formed in the first connection object, The fixing bracket 20 is fixed to the first connection object.

  Hereinafter, a procedure for attaching the fixing bracket 20 to the shaft 10 will be described with reference to FIGS. 6 and 7.

First, as shown in FIG. 6, the other end portion (upper end portion) of the shaft 10, more specifically, the fixed side caulking portion 15 and the fixed side locking portion 14 are inserted into the insertion hole 22 of the fixing bracket 20.
The other end portion (upper end portion) of the shaft 10 is inserted into the insertion hole 22 of the fixing bracket 20, and a portion (FIG. 11 (FIG. 11)) of the lower plate surface of the main body portion 21 of the fixing bracket 20. b)) is in contact with the upper surface of the fixed flange 13b of the shaft support 13 (see FIG. 8A), the fixed locking protrusion 14a is fitted in the fixed locking groove 22a, The fixed side locking projection 14b is fitted in the fixed side locking groove 22b.
As a result, the fixed bracket 20 is locked to the shaft 10 so as not to be relatively rotatable.

Next, crimping is performed on the fixed side crimping portion 15 in a state where the fixed side locking portion 14 is inserted into the insertion hole 22 of the fixing bracket 20.
More specifically, the shaft 10 is fixed at a predetermined position, the fixed side locking portion 14 is inserted into the insertion hole 22 of the fixing bracket 20, and the other end side (upper end side) of the shaft through hole 16 of the shaft 10. By inserting a leading end of a caulking punch (not shown) into the opening of the tube and pushing down the caulking punch downward (pushing the caulking punch into the shaft through hole 16), the fixed side The crimping part 15 is subjected to crimping.
By caulking the fixed side crimping portion 15, the fixed side crimping portion 15 is plastically deformed, and the fixed side crimping portion 15 is expanded in the radial direction of the shaft 10 and downward (in a direction approaching the shaft support portion 13). Pushed down. Here, in the present embodiment, since the fixed-side tapered surface 16b is formed on the other end side (upper end side) of the shaft through hole 16, the fixed-side caulking portion 15 is smoothly expanded in the radial direction of the shaft 10. It is done.
As a result, as shown in FIG. 7, the plastically deformed fixed-side crimped portion 15 is formed in a portion (see FIG. 11A) in the vicinity of the insertion hole 22 on the upper plate surface of the main body portion 21 of the fixed bracket 20. It abuts and supports the fixed bracket 20 so as not to be detached from the shaft 10.
More specifically, the fixed bracket 20 is supported from the shaft 10 so as not to drop off by the shaft support portion 13 (fixed side flange 13b) and the plastically deformed fixed side caulking portion 15 sandwiching the fixed bracket 20 up and down.

In this manner, the fixing bracket 20 is fixed to the shaft 10 so as not to rotate relative to the shaft 10 and so as not to fall off the shaft 10.
Further, by fixing the fixing bracket 20 fixed to the shaft 10 to the first connection object as described above, the shaft 10 is fixed to the first connection object via the fixing bracket 20.

Hereinafter, the spacer 30 will be described with reference to FIG.
The spacer 30 is a member for maintaining a constant distance from the “fixing bracket 20 fixed to the shaft 10” to the “rotating bracket 50 pivotally supported on the shaft 10”, which will be described in detail later. .

The spacer 30 shown in FIG. 12 has a pair of upper and lower end surfaces, an outer peripheral surface, and an inner peripheral surface, and is a substantially ring-shaped member (a cylindrical shape that is short in the axial direction).
The spacer 30 of this embodiment is manufactured by integrally molding a resin material. Further, by forming circumferential grooves on a pair of upper and lower end surfaces of the spacer 30 and appropriately performing “thinning”, the spacer 30 can be reduced in weight (resource saving) while ensuring the strength required for the spacer 30. I am trying.

An insertion hole 31 is formed in the spacer 30. The insertion hole 31 is a hole that vertically penetrates a pair of upper and lower end surfaces of the spacer 30, and an inner peripheral surface of the insertion hole 31 forms an inner peripheral surface of the spacer 30.
Locking protrusions 33 and 34 are formed on the upper end face of the spacer 30. The locking protrusions 33 and 34 are substantially cylindrical protrusions, and protrude upward from the upper end face of the spacer 30.

Hereinafter, the first washer 40 will be described with reference to FIG.
The first washer 40 is a thin ring-shaped member (a short cylindrical shape in the axial direction) having a pair of upper and lower panel surfaces, an outer peripheral surface, and an inner peripheral surface. The first washer 40 is made of a metal material such as stainless steel or copper alloy.
An insertion hole 41 is formed in the first washer 40. The insertion hole 41 passes vertically through a pair of upper and lower panel surfaces of the first washer 40. The inner peripheral surface of the insertion hole 41 forms the inner peripheral surface of the first washer 40.
Locking holes 43 and 44 are formed in the first washer 40. The locking holes 43 and 44 vertically penetrate the pair of upper and lower panel surfaces of the first washer 40. The locking holes 43 and 44 are arranged at positions sandwiching the insertion hole 41.

Below, the rotation bracket 50 is demonstrated using (a) of FIG. 13, and (b) of FIG.
The rotation bracket 50 is an embodiment of a rotation member according to the present invention.
The rotating bracket 50 of the present embodiment is a member made of a steel plate, and is manufactured by subjecting the steel plate to machining such as bending and drilling as appropriate.
The rotation bracket 50 of this embodiment includes a main body 51, a rotation restricting portion 55, and legs 56, 57, 58, and 59.

The main body 51 is a plate-like portion having a pair of upper and lower plate surfaces, and constitutes the main structure of the rotating bracket 50.
An insertion hole 52 is formed in the main body 51. The insertion hole 52 passes vertically through a pair of upper and lower plate surfaces of the main body 51.
Locking protrusions 53 and 54 are formed on the main body 51. The locking protrusions 53 and 54 are substantially cylindrical protrusions, and protrude upward from the upper plate surface of the main body 51.

  The rotation restricting portion 55 is a plate-like portion having a pair of front and rear plate surfaces. The upper end portion of the rotation restricting portion 55 is continuous with the front end portion of the main body portion 51.

The leg portions 56, 57, 58, and 59 are plate-like portions extending from the main body portion 51.
More specifically, the upper end portion of the leg portion 56 is continuous with the left front portion of the main body portion 51, the upper end portion of the leg portion 57 is continuous with the right front portion of the main body portion 51, and the upper end portion of the leg portion 58 is the left rear portion of the main body portion 51. The upper end portion of the leg portion 59 is continuous with the right rear portion of the main body portion 51.
The leg portion 56 is formed with through holes 56a and 56b, the leg portion 57 is formed with through holes 57a and 57b, the leg portion 58 is formed with through holes 58a, 58b and 58c, and the leg portion 59 is penetrated. Holes 59a and 59b are formed.

  Bolts (not shown) are respectively inserted into the through holes 56a, 56b, 57a, 57b, 58a, 58b, 58c, 59a and 59b, and these bolts are connected to a second object to be connected (for example, an image display portion of a register). The rotation bracket 50 is fixed to the second connection object by screwing into a screw hole formed in an external monitor of the fundus camera, a video camera support arm of the document camera, or the like.

Hereinafter, the second washer 60 will be described with reference to FIG.
The second washer 60 is an embodiment of the frictional force generating member according to the present invention.
The second washer 60 is a generally disk-shaped member having a pair of upper and lower disk surfaces.
The second washer 60 of this embodiment is manufactured by punching a steel plate.
An insertion hole 61 is formed in the second washer 60. The insertion hole 61 is an embodiment of the “insertion hole of the frictional force generating member” according to the present invention. The insertion hole 61 passes vertically through a pair of upper and lower panel surfaces of the second washer 60.
On the inner peripheral surface of the insertion hole 61, second pressing-side locking grooves 61a, 61b, 61c, and 61d are formed. The second pressing side locking grooves 61a, 61b, 61c, 61d are one embodiment of the second pressing side locking grooves according to the present invention.
The second pressing side locking groove 61 a of the present embodiment is formed in “a portion corresponding to the left side on the inner peripheral surface of the insertion hole 61”, and the second pressing side locking groove 61 b is “the inner peripheral surface of the insertion hole 61. The second pressing side locking groove 61c is formed in the “part corresponding to the front in the inner peripheral surface of the insertion hole 61”, and the second pressing side locking groove 61d is “ In the inner peripheral surface of the insertion hole 61, a portion corresponding to the rear is formed.

Hereinafter, the disc springs 71 and 72 will be described with reference to FIG.
The disc springs 71 and 72 are one embodiment of the elastic member according to the present invention.
The disc spring 71 is a generally disk-shaped member having a pair of upper and lower disk surfaces, an outer circumferential surface and an inner circumferential surface. The disc spring 71 of this embodiment is manufactured by punching a plate material made of spring steel, which is an elastically deformable material.
An insertion hole 71 a is formed in the disc spring 71. The insertion hole 71a is an embodiment of the “insertion hole for the elastic member” according to the present invention. The insertion hole 71a passes vertically through a pair of upper and lower panel surfaces of the disc spring 71. The inner peripheral surface of the insertion hole 71 a forms the inner peripheral surface of the disc spring 71.
The pair of upper and lower disc surfaces of the disc spring 71 are inclined downward from the end portion on the outer peripheral surface side toward the end portion on the inner peripheral surface side (see FIG. 6).

The disc spring 72 is a generally disc-shaped member having a pair of upper and lower disc surfaces, an outer peripheral surface and an inner peripheral surface, and an insertion hole 72 a is formed in the disc spring 72.
Since the disc spring 72 of this embodiment is equivalent to the disc spring 72 having the same shape and the same material as the disc spring 71, the detailed explanation of the disc spring 72 is omitted.

Below, the 3rd washer 80 is demonstrated using (b) of FIG.
The third washer 80 is an embodiment of the pressing member according to the present invention.
The third washer 80 is a generally disk-shaped member having a pair of upper and lower disk surfaces.
The third washer 80 of this embodiment is manufactured by punching a steel plate.
An insertion hole 81 is formed in the third washer 80. The insertion hole 81 is an embodiment of the “insertion hole of the pressing member” according to the present invention. The insertion hole 81 passes vertically through a pair of upper and lower panel surfaces of the third washer 80.
On the inner peripheral surface of the insertion hole 81, presser side locking grooves 81a, 81b, 81c, 81d are formed.
The pressing side locking grooves 81a, 81b, 81c, 81d are one embodiment of the pressing side locking grooves according to the present invention.
The pressing side locking groove 81a of the present embodiment is formed in “a portion corresponding to the left side on the inner peripheral surface of the insertion hole 81”, and the pressing side locking groove 81b is set on the right side on the inner peripheral surface of the insertion hole 81. The pressing side locking groove 81c is formed in the “part corresponding to the front in the inner peripheral surface of the insertion hole 81”, and the pressing side locking groove 81d is formed in the “inner peripheral surface of the insertion hole 81”. It is formed in the “part corresponding to the rear”.
A rotation restricting protrusion 82 is formed on the third washer 80.
The rotation restricting protrusion 82 of the present embodiment protrudes from the outer peripheral surface of the third washer 80 in the radial direction of the third washer 80 (more specifically, right rear).

Hereinafter, a procedure for attaching the spacer 30, the first washer 40, the rotating bracket 50, the second washer 60, the disc springs 71 and 72, and the third washer 80 to the shaft 10 will be described with reference to FIG.
In the following description, it is assumed that the fixing bracket 20 is already fixed to the shaft 10.

First, as shown in FIG. 7, one end portion (lower end portion) of the shaft 10, more specifically, the pressing side caulking portion 11, the pressing side locking portion 12, and the shaft support portion 13 are inserted into the insertion hole 31 of the spacer 30.
One end portion (lower end portion) of the shaft 10 is inserted into the insertion hole 31 of the spacer 30, and then the upper end surface (see FIG. 12A) of the spacer 30 is the lower plate surface of the main body portion 21 of the fixing bracket 20. When contacted (see FIG. 11B), the locking projection 33 fits into the locking hole 23, and the locking projection 34 fits into the locking hole 24 (FIGS. 1 and 4). a)).
As a result, the spacer 30 is locked to the fixed bracket 20 and thus the shaft 10 so as not to be relatively rotatable.

Next, as shown in FIG. 7, one end portion (lower end portion) of the shaft 10, more specifically, the pressing side caulking portion 11, the pressing side locking portion 12, and the shaft support portion 13 are inserted into the insertion hole 41 of the first washer 40. Is done.
When one end portion (lower end portion) of the shaft 10 is inserted into the insertion hole 41 of the first washer 40, the first washer 40 is rotatably supported by the shaft 10 (more specifically, the shaft support portion 13). The upper surface of the washer 40 (see FIG. 14A) abuts on the upper end surface of the spacer 30 (see FIG. 12B).

Subsequently, as shown in FIG. 7, one end portion (lower end portion) of the shaft 10, more specifically, the pressing side caulking portion 11, the pressing side locking portion 12, and the shaft support portion 13 are inserted into the insertion hole 52 of the rotating bracket 50. Is done.
One end portion (lower end portion) of the shaft 10 is inserted into the insertion hole 52 of the rotation bracket 50, and the upper plate surface (see FIG. 13A) of the main body portion 51 of the rotation bracket 50 is the first washer 40. When contacting the lower board surface, the locking projection 53 fits into the locking hole 43 and the locking projection 54 fits into the locking hole 44.
As a result, the first washer 40 is locked to the rotation bracket 50 so as not to rotate relative to the rotation bracket 50, and the first washer 40 and the rotation bracket 50 can rotate integrally with the shaft 10 (more specifically, the shaft support portion 13) ( It is pivotally supported.

Subsequently, as shown in FIG. 7, one end portion (lower end portion) of the shaft 10, more specifically, the pressing side caulking portion 11 and the pressing side locking portion 12 are inserted into the insertion hole 61 of the second washer 60.
When one end (lower end) of the shaft 10 is inserted into the insertion hole 61 of the second washer 60, the pressing side locking projection 12a is fitted into the second pressing side locking groove 61a, and the pressing side locking projection 12b. Is fitted into the second pressing side locking groove 61b, the pressing side locking projection 12c is fitted into the second pressing side locking groove 61c, and the pressing side locking projection 12d is connected to the second pressing side locking groove 61d. Mating.
As a result, the second washer 60 is locked to the shaft 10 so as not to be relatively rotatable.

As shown in FIG. 10B, the height in the axial direction (vertical direction) of the shaft support portion 13 of the shaft 10 (the distance from the lower surface of the pressing side flange 13a to the upper surface of the fixed flange 13b) is set to H1. As shown in FIG. 12A, the height in the axial direction (vertical direction) of the spacer 30 (the distance between the pair of upper and lower end surfaces of the spacer 30) is H2, and the first as shown in FIG. The height in the axial direction (vertical direction) of the washer 40 (distance between the pair of upper and lower panel surfaces of the first washer 40) is H3, and the axial direction of the main body 51 of the rotary bracket 50 as shown in FIG. When the height in the (vertical direction) (distance between the pair of upper and lower plate surfaces of the main body 51) is H4, in this embodiment, H1 is smaller than the sum of H2, H3, and H4 (H1 <H2 + H3 + H4 holds). ).
Therefore, as shown in FIG. 7, one end portion (lower end portion) of the shaft 10 is inserted into the insertion hole 61 of the second washer 60, and the outer peripheral portion of the upper surface of the second washer 60 is the main body portion of the rotating bracket 50. 51, the inner peripheral portion of the upper plate surface of the second washer 60 is on the lower end surface of the shaft support portion 13 (more specifically, the lower plate surface of the pressing side flange 13a). Does not touch.

Subsequently, as shown in FIG. 7, one end portion (lower end portion) of the shaft 10, more specifically, the pressing side caulking portion 11 and the pressing side locking portion 12 are inserted into the insertion hole 71 a of the disc spring 71.
When one end (lower end) of the shaft 10 is inserted into the insertion hole 71 a of the disc spring 71, the outer peripheral portion of the upper disc surface of the disc spring 71 contacts the outer peripheral portion of the lower disc surface of the second washer 60.

Subsequently, as shown in FIG. 7, one end portion (lower end portion) of the shaft 10, more specifically, the pressing side caulking portion 11 and the pressing side locking portion 12 are inserted into the insertion hole 72 a of the disc spring 72.
When one end (lower end) of the shaft 10 is inserted into the insertion hole 72 a of the disc spring 72, the inner peripheral portion of the upper disc surface of the disc spring 72 contacts the inner peripheral portion of the lower disc surface of the disc spring 71. .

Subsequently, as shown in FIG. 7, one end portion (lower end portion) of the shaft 10, more specifically, the pressing side caulking portion 11 and the pressing side locking portion 12 are inserted into the insertion hole 81 of the third washer 80.
When the pressing side locking portion 12 is inserted through the insertion hole 81 of the third washer 80, the pressing side locking projection 12a is fitted in the pressing side locking groove 81a, and the pressing side locking projection 12b is pressed by the pressing side locking. The pressing side locking projection 12c is fitted into the pressing side locking groove 81c, and the pressing side locking projection 12d is fitted into the pressing side locking groove 81d.
As a result, the third washer 80 is locked to the shaft 10 so as not to be relatively rotatable. When the shaft 10 (pressing side locking portion 12) is inserted through the insertion hole 81 of the third washer 80, the shaft 10 is movable in the axial direction (vertical direction) of the shaft 10.
Further, when the holding side locking portion 12 is inserted into the insertion hole 81 of the third washer 80, the outer peripheral portion of the upper plate surface of the third washer 80 comes into contact with the outer peripheral portion of the lower plate surface of the disc spring 72.

Subsequently, as shown in FIG. 7, the shaft support portion 13 is inserted into the insertion hole 31 of the spacer 30, the insertion hole 41 of the first washer 40, and the insertion hole 52 of the rotation bracket 50, and the pressing side locking portion 12 is the first one. The press side caulking portion 11 is crimped while being inserted into the insertion hole 61 of the second washer 60, the insertion hole 71a of the disc spring 71, the insertion hole 72a of the disc spring 72, and the insertion hole 81 of the third washer 80. The
More specifically, the shaft 10 is fixed at a predetermined position, and the shaft support portion 13 is inserted into the insertion hole 31 of the spacer 30, the insertion hole 41 of the first washer 40, and the insertion hole 52 of the rotating bracket 50, The stopper 12 is inserted into the insertion hole 61 of the second washer 60, the insertion hole 71a of the disc spring 71, the insertion hole 72a of the disc spring 72, and the insertion hole 81 of the third washer 80, and one end of the shaft through-hole 16 of the shaft 10. A series of operations of inserting a leading end of a caulking punch (not shown) into the opening on the part side (lower end side) and pushing the caulking punch upward (pushing the caulking punch into the shaft through hole 16) As a result, the pressing side crimping portion 11 is crimped.

By applying the crimping process to the pressing side crimping part 11, the pressing side crimping part 11 is plastically deformed, and the pressing side crimping part 11 is expanded in the radial direction of the shaft 10 and upward (in a direction approaching the shaft support part 13). Pushed up. Here, in this embodiment, since the pressing side taper surface 16a is formed on one end portion side (lower end portion side) of the shaft through hole 16, the pressing side crimping portion 11 is smoothly pushed and expanded in the radial direction of the shaft 10. .
As a result, as shown in FIG. 7, the plastically deformed pressing side caulking portion 11 abuts on a portion of the disk surface under the third washer 80 near the insertion hole 81, and the spacer 30, the first washer 40, the rotation The bracket 50, the second washer 60, the disc springs 71 and 72, and the third washer 80 are supported so as not to be detached from the shaft 10.
More specifically, the fixing bracket 20 fixed to the shaft 10 and the pressing side caulking portion 11 that has been plastically deformed include the spacer 30, the first washer 40, the rotating bracket 50, the second washer 60, the disc springs 71 and 72, and the third. By sandwiching the washer 80 vertically, the spacer 30, the first washer 40, the rotating bracket 50, the second washer 60, the disc springs 71 and 72, and the third washer 80 are supported so as not to be detached from the shaft 10.

Further, by pressing the pressing side crimping portion 11, the pressing side crimping portion 11 plastically deformed by the crimping processing moves the third washer 80 upward (the axial direction of the shaft 10 and the third washer 80 is the disc springs 71 and 72. In the direction of approaching).
As a result, the third washer 80 comes into contact with the disc springs 71 and 72, pushes the disc springs 71 and 72 upward (in the axial direction of the shaft 10 and the direction in which the disc springs 71 and 72 are compressed), and the disc springs 71 and 72. Is elastically deformed.

When the disc springs 71 and 72 are elastically deformed, the disc springs 71 and 72 push the second washer 60 upward (in the axial direction of the shaft 10 and the direction in which the second washer 60 approaches the rotating bracket 50), The second washer 60 contacts the rotating bracket 50.
As a result, the upper plate surface of the first washer 40 and the upper end surface of the spacer 30, and the outer peripheral portion of the upper plate surface of the second washer 60 and the lower plate surface of the main body 51 of the rotating bracket 50. A frictional force based on the elastic force of the disc springs 71 and 72 (the force by which the elastically deformed disc springs 71 and 72 return to the original shape) is generated.
In this embodiment, the fixed bracket 20 is fixed to the shaft 10 so as not to be relatively rotatable, the spacer 30 is locked to the fixed bracket 20 so as not to be relatively rotatable, and the first washer 40 is not allowed to be relatively rotated to the rotating bracket 50. Since it is locked, a frictional force based on the elastic force of the disc springs 71 and 72 is substantially generated between the shaft 10 and the rotating bracket 50.

Thus, in the present invention, when “a frictional force based on the elastic force of the elastic member is generated between the shaft member and the rotating member”, the shaft member and the rotating member are in direct contact with each other. It is not limited to the case where a frictional force is generated in the portion.
That is, a single member or a plurality of separate members are interposed between the shaft member and the rotating member, and friction is generated between the separate members, between the separate member and the shaft member, or between the separate member and the rotating member. The case where “a frictional force based on the elastic force of the elastic member is substantially generated between the shaft member and the rotating member” is also included, for example, when a force is generated.

Then, a frictional force based on the elastic force of the disc springs 71 and 72 is generated between the shaft 10 and the rotating bracket 50, thereby generating a torque that resists the rotation of the rotating bracket 50 with respect to the shaft 10. In other words, the frictional force generated between the shaft 10 and the rotation bracket 50 becomes a torque that resists the rotation of the rotation bracket 50 with respect to the shaft 10.
As a result, when a torque larger than the frictional force generated between the shaft 10 and the rotating bracket 50 acts on the hinge 1 from the outside, the rotating bracket 50 rotates with respect to the shaft 10. When the torque below the frictional force generated between the rotary bracket 50 and the rotary bracket 50 is applied to the hinge 1 from the outside, the rotary bracket 50 does not rotate with respect to the shaft 10.

As described above, the hinge 1 is
A shaft 10 fixed to a first connection object (not shown) via a fixing bracket 20;
A pivot bracket 50 pivotally supported on the shaft 10 and fixed to a second connection object (not shown);
Belleville springs 71 and 72 in which insertion holes 71a and 72a through which the shaft 10 is inserted are respectively formed;
A third washer 80 formed with an insertion hole 81 through which the shaft 10 is movably inserted in the axial direction of the shaft 10;
Comprising
The shaft 10 is formed with an axial through hole 16 that penetrates from one end of the shaft 10 to the other end in the axial direction of the shaft 10.
The shaft 10
A cylindrical pressing side caulking portion 11 which forms one end of the shaft 10 and has a constant thickness from the outer peripheral surface to the inner peripheral surface of the shaft through hole 16 in the circumferential direction of the shaft 10;
A holding portion that forms a cylindrical portion that is continuous with the pressing side crimping portion 11 in the axial direction of the shaft 10 and that has pressing side locking projections 12a, 12b, 12c, and 12d that protrude in the radial direction of the shaft 10 on the outer peripheral surface. Side locking portion 12;
In the axial direction of the shaft 10, a portion that is continuous with the pressing side locking portion 12 and that is on the opposite side of the pressing side locking portion 11 with the pressing side locking portion 12 interposed therebetween, is a portion on which the rotating bracket 50 is pivotally supported. A shaft support 13;
With
On the inner peripheral surface of the insertion hole 81 of the third washer 80, presser side locking grooves 81a, 81b, 81c, 81d are formed,
When the pressing side locking portion 12 of the shaft 10 is inserted into the insertion hole 81 of the third washer 80, the pressing side locking projections 12a, 12b, 12c, and 12d are fitted into the pressing side locking grooves 81a, 81b, 81c, and 81d. By combining, the third washer 80 is locked to the shaft 10 so as not to be relatively rotatable,
The rotating bracket 50 is pivotally supported by the shaft support portion 13 of the shaft 10, and the holding side locking portion 12 of the shaft 10 is inserted through the insertion holes 71 a and 72 a of the disc springs 71 and 72 and the insertion hole 81 of the third washer 80. In this state, the pressing side caulking portion 11 is subjected to caulking, whereby the pressing side caulking portion 11 plastically deformed by the caulking processing causes the third washer 80 to move in the axial direction of the shaft 10 and the third washer 80 corresponds to the disc springs 71 and 72. The third washer 80 abuts against the disc springs 71 and 72 so that the disc springs 71 and 72 are axially compressed and compressed in the shaft 10 (in this embodiment). The disc springs 71 and 72 are elastically deformed, and a frictional force based on the elastic force of the disc springs 71 and 72 is generated between the shaft 10 and the rotating bracket 50. Torque is generated against the rotation of the rotating bracket 50 with respect to the shaft 10, and the plastically deformed pressing side caulking portion 11 supports the rotating bracket 50, the disc springs 71 and 72, and the third washer 80 so that they cannot be detached from the shaft 10. To do.
Configuring the hinge 1 in this way has the following advantages.
That is, the pressing side crimping portion 11 and the pressing side locking portion 12 of the shaft 10 are clearly separated in the axial direction of the shaft 10, and the inner periphery of the shaft through hole 16 from the outer peripheral surface of the pressing side crimping portion 11. Since the thickness up to the surface (thickness of the pressing side caulking portion 11) is a cylindrical shape that is constant in the circumferential direction of the shaft 10, even when the pressing side caulking portion 11 is subjected to caulking, the pressing side caulking portion 11 The amount of plastic deformation is generally uniform in the circumferential direction of the shaft 10, and it is possible to prevent “cracking” from occurring in the pressing side crimped portion 11 that has been plastically deformed.
Further, the third washer 80 is locked to the shaft 10 so as not to be relatively rotatable by fitting the pressing side locking projections 12a, 12b, 12c, and 12d into the pressing side locking grooves 81a, 81b, 81c, and 81d. Is possible.
Further, by engaging the third washer 80 with the shaft 10 so as not to rotate relative to the shaft 10, it is possible to prevent wear at the contact portion between the third washer 80 and the pressing side caulking portion 11 plastically deformed. This contributes to improved durability (longer life) of the hinge 1.

The hinge 1 includes a second washer 60 in which an insertion hole 61 through which the shaft 10 is inserted is formed.
Second presser side locking grooves 61a, 61b, 61c, 61d are formed on the inner peripheral surface of the insertion hole 61 of the second washer 60,
When the pressing side locking portion 12 of the shaft 10 is inserted into the insertion hole 61 of the second washer 60, the pressing side locking projections 12a, 12b, 12c, and 12d are the second pressing side locking grooves 61a, 61b, 61c, and 61d. , The second washer 60 is locked to the shaft 10 so as not to be relatively rotatable,
The rotating bracket 50 is pivotally supported by the shaft support portion 13 of the shaft 10, and the holding side locking portion 12 of the shaft 10 is inserted into the insertion hole 61 of the second washer 60, the insertion holes 71 a and 72 a of the disc springs 71 and 72, and the third. By pressing the pressing side crimping portion 11 while being inserted through the insertion hole 81 of the washer 80, the pressing side crimping portion 11 plastically deformed by the crimping processing causes the third washer 80 to move in the axial direction of the shaft 10. The third washer 80 is pushed in a direction approaching the disc springs 71 and 72 (in this embodiment, upward), and the third washer 80 abuts against the disc springs 71 and 72 so that the disc springs 71 and 72 are in the axial direction of the shaft 10 and The disc springs 71 and 72 are elastically deformed by pushing in the compressed direction (upward in the present embodiment), and the disc springs 71 and 72 push the second washer 60 in the axial direction of the shaft 10. In addition, the second washer 60 is pushed in a direction approaching the rotating bracket 50 (upward in the present embodiment), and the second washer 60 comes into contact with the rotating bracket 50 so that the dish is placed between the shaft 10 and the rotating bracket 50. A frictional force based on the elastic force of the springs 71 and 72 is generated, a torque against the rotation of the rotating bracket 50 with respect to the shaft 10 is generated, and the pressing side caulking portion 11 which is plastically deformed is the rotating bracket 50 and the second washer. 60, the disc springs 71 and 72, and the third washer 80 are supported so as not to fall off the shaft 10.
Configuring the hinge 1 in this way has the following advantages.
That is, the presser side locking projections 12a, 12b, 12c, and 12d are engaged with the second presser side locking grooves 61a, 61b, 61c, and 61d, so that the second washer 60 is locked to the shaft 10 so as not to be relatively rotatable. Is possible.
Further, by locking the second washer 60 to the shaft 10 so as not to be relatively rotatable, the disc springs 71 and 72 are engaged with the second washer 60 and the shaft 10 which are locked to the shaft 10 so as not to be relatively rotatable. Even if the rotation bracket 50 is rotated with respect to the shaft 10, the contact portion between the second washer 60 and the disc spring 71, and the first portion are arranged between the stopped third washers 80. The abutting portions of the three washers 80 and the disc spring 72 do not rotate relative to each other, and wear at these abutting portions can be prevented, which contributes to improving the durability (longer life) of the hinge 1.

The hinge 1 is
A fixing bracket 20 for fixing the shaft 10 to the first connection object by being fixed to the shaft 10 and the first connection object;
The shaft 10
A portion that is continuous with the shaft support portion 13 in the axial direction of the shaft 10 and that is on the opposite side of the holding side locking portion 12 with the shaft support portion 13 interposed therebetween, forms a cylindrical portion. A fixed side locking portion 14 formed with fixed side locking projections 14a and 14b protruding to
In the axial direction of the shaft 10, it is a portion that is continuous with the fixed side locking portion 14 and that is on the opposite side of the shaft support portion 13 across the fixed side locking portion 14, and forms the other end portion of the shaft 10. A cylindrical fixed side caulking portion 15 having a thickness up to the inner peripheral surface of the through hole 16 constant in the circumferential direction of the shaft 10;
With
The fixing bracket 20 is formed with an insertion hole 22 through which the shaft 10 is inserted.
Fixed side locking grooves 22a and 22b are formed on the inner peripheral surface of the insertion hole 22 of the fixed bracket 20,
When the fixed-side locking portion 14 of the shaft 10 is inserted into the insertion hole 22 of the fixed bracket 20, the fixed-side locking protrusions 14a and 14b are fitted into the fixed-side locking grooves 22a and 22b, so that the fixed bracket 20 is connected to the shaft. 10 is locked against relative rotation,
The fixed side caulking part 15 that is plastically deformed by the caulking process is fixed by caulking the fixed side caulking part 15 in a state where the fixed side locking part 14 of the shaft 10 is inserted into the insertion hole 22 of the fixing bracket 20. The bracket 20 is supported so as not to be detached from the shaft 10.
Configuring the hinge 1 in this way has the following advantages.
That is, the fixed side crimping portion 15 and the fixed side locking portion 14 of the shaft 10 are clearly separated in the axial direction of the shaft 10, and the inner periphery of the shaft through hole 16 from the outer peripheral surface of the fixed side crimping portion 15. Since the thickness up to the surface (thickness of the fixed caulking portion 15) is a cylindrical shape that is constant in the circumferential direction of the shaft 10, even when the fixing caulking portion 15 is caulked, the fixed caulking portion 15 The amount of plastic deformation is substantially uniform in the circumferential direction of the shaft 10, and it is possible to prevent a “crack” from occurring in the fixed side caulking portion 15 that has undergone plastic deformation.
Further, the fixed bracket 20 can be fixed to the shaft 10 so as not to be relatively rotatable by fitting the fixed side locking protrusions 14a and 14b into the fixed side locking grooves 22a and 22b.
Furthermore, by fixing the fixed bracket 20 to the shaft 10 so as not to be relatively rotatable, it is possible to prevent wear at the contact portion between the fixed bracket 20 and the fixed side caulking portion 15 which has been plastically deformed. Contributes to improved durability (longer service life).

In the present embodiment, the fixing bracket 20 and the first connection object (not shown) are separate members, and the fixing bracket 20 is fixed to the first connection object (not shown) with bolts, but the present invention is not limited to this. .
That is, the fixing member and the first connection object according to the present invention may be integrally formed (the first connection object may also serve as the fixing member, or a part of the first connection object may be the fixing member. May be made).

In the present embodiment, the rotation bracket 50 and the second connection object (not shown) are separate members, and the rotation bracket 50 is fixed to the second connection object (not shown) with a bolt. It is not limited.
That is, the rotation member and the second connection object according to the present invention may be integrally formed (the second connection object may also serve as the rotation member, or a part of the second connection object may be A rotating member may be formed).

In this embodiment, the shaft 10 is made of ZDC2 which is a kind of zinc alloy, but the present invention is not limited to this.
That is, the material constituting the shaft member according to the present invention can ensure the mechanical strength required for the hinge according to the present invention, and the end of the shaft member (pressing side caulking portion or fixed side caulking). It is desirable to select a material that does not easily crack at the end when the part is caulked. ZDC2 is an example of a material that satisfies such conditions.

In the present embodiment, a total of four pressing side locking projections 12 a, 12 b, 12 c, and 12 d are formed on the pressing side locking portion 12, and the pressing side locking projections 12 a, 12 b, 12 c, and 12 d are generally in the axial direction of the shaft 10. However, the number and shape of the pressing-side locking projections according to the present invention are not limited to this.
That is, if the pressing member (and the frictional force generating member) can be locked, the number of the pressing side locking projections may be one or more, and the shape of the pressing side locking projection is the pressing side locking projections 12a, 12b, The shape may be different from 12c and 12d (for example, a protrusion having a semicircular cross section protruding in the radial direction of the shaft member when viewed in the axial direction of the shaft member and extending in the axial direction of the shaft member).

In the present embodiment, the disc springs 71 and 72 (members having an outer shape such as the outer peripheral surface of the truncated cone) are used as the elastic members, but the present invention is not limited to this.
That is, the elastic member according to the present invention has an insertion hole through which the shaft member is inserted, and elastically deforms in the axial direction of the shaft member when the shaft member is inserted through the insertion hole. Any member can be used as long as its length in the axial direction can be changed.
Specific examples of the elastic member according to the present invention include a disc spring, a wave washer (wave spring washer), a spring washer (spring washer), a rubber bush (a rubber member molded into a cylindrical shape), and the like.

In the present embodiment, for the sake of convenience of explanation, first, the fixed side crimping portion 15 is crimped and then the pressing side crimping portion 11 is crimped. However, the present invention is not limited to this.
That is, in the hinge according to the present invention, the pressing side caulking portion may be first crimped and the fixing side caulking portion may be subsequently caulked, and both the pressing side caulking portion and the fixing side caulking portion may be simultaneously performed. Caulking may be applied.

In the present embodiment, the rotation bracket 50 includes a rotation restricting portion 55, and a rotation restricting protrusion 82 is formed on the third washer 80.
As a result, the rotation bracket 50 can be rotated with respect to the shaft 10 in a range (angle) where the rotation restricting portion 55 and the rotation restricting protrusion 82 do not overlap each other when viewed from the axial direction of the shaft 10. Further, in the range (angle) where the rotation restricting portion 55 and the rotation restricting projection 82 overlap, the rotation restricting portion 55 and the rotation restricting projection 82 abut (interfere) with each other, and therefore the rotation bracket 50 with respect to the shaft 10. Cannot rotate.
Thus, by providing the rotation restricting portion 55 and the rotation restricting protrusion 82 and appropriately selecting these shapes, the range (angle) in which the hinge 1 rotates can be appropriately set according to the use of the hinge 1. Is possible.

1 Hinge 10 Shaft (shaft member)
DESCRIPTION OF SYMBOLS 11 Press side crimping part 12 Press side latching part 12a * 12b * 12c * 12d Holding side latching protrusion 13 Shaft support part 14 Fixed side latching part 14a * 14b Fixed side latching protrusion 15 Fixed side crimping part 16 Shaft through-hole 20 Fixing bracket (fixing member)
30 Spacer 40 First washer 50 Rotating bracket (Rotating member)
60 Second washer (frictional force generating member)
61 Insertion hole (insertion hole of frictional force generating member)
61a, 61b, 61c, 61d Second holding side locking groove 71, 72 Belleville spring (elastic member)
71a / 72a insertion hole (insertion hole for elastic member)
80 Third washer (holding member)
81 Insertion hole (insertion hole of pressing member)
81a / 81b / 81c / 81d Holding side retaining groove

Claims (4)

A hinge for pivotally connecting the first connection object to the second connection object,
A shaft member fixed to the first connection object;
A pivot member pivotally supported by the shaft member and fixed to the second connection object;
An elastic member formed with an insertion hole through which the shaft member is inserted;
A holding member having an insertion hole through which the shaft member is movably inserted in the axial direction of the shaft member;
Comprising
The shaft member is formed with a shaft through hole penetrating in the axial direction of the shaft member from one end portion to the other end portion of the shaft member,
The shaft member is
A cylindrical pressing side crimping portion that forms one end of the shaft member, and the thickness from the outer peripheral surface to the inner peripheral surface of the shaft through hole is constant in the circumferential direction of the shaft member;
A pressing-side locking portion that forms a cylindrical portion that continues to the pressing-side crimping portion in the axial direction of the shaft member, and that has a pressing-side locking protrusion that protrudes in the radial direction of the shaft member on the outer peripheral surface; ,
A portion that is continuous with the pressing side locking portion in the axial direction of the shaft member and that is on the opposite side of the pressing side locking portion with the pressing side locking portion interposed therebetween, and a portion on which the rotating member is pivotally supported. A shaft support,
With
A holding-side locking groove is formed on the inner peripheral surface of the insertion hole of the pressing member,
When the pressing-side locking portion of the shaft member is inserted into the insertion hole of the pressing member, the pressing-side locking protrusion engages with the pressing-side locking groove, so that the pressing member rotates relative to the shaft member. Locked in impossible
The pressing side caulking is performed in a state where the rotating member is pivotally supported by the shaft supporting portion of the shaft member and the pressing side locking portion of the shaft member is inserted through the insertion hole of the elastic member and the insertion hole of the pressing member. The pressing side caulking part plastically deformed by the caulking process pushes the pressing member in the axial direction of the shaft member and in the direction in which the pressing member approaches the elastic member. Abuts against the elastic member and pushes the elastic member in the axial direction of the shaft member and in the direction of compression, the elastic member elastically deforms, and the elastic member moves between the shaft member and the rotating member. A frictional force based on an elastic force is generated, a torque against the rotation of the rotating member with respect to the shaft member is generated, and the pressing side caulking portion plastically deformed includes the rotating member, the elastic member, and The serial pressing member to fall off non supported from said shaft member,
A fixing member that fixes the shaft member to the first connection object by being fixed to the shaft member and the first connection object;
The shaft member is
A portion that is continuous with the shaft support portion in the axial direction of the shaft member and that is on the opposite side of the pressing side locking portion with the shaft support portion interposed therebetween, forms a cylindrical portion, and an outer peripheral surface of the shaft member A fixed-side locking portion in which a fixed-side locking protrusion protruding in the radial direction is formed;
A portion that is connected to the fixed-side locking portion in the axial direction of the shaft member and that is on the opposite side of the shaft support portion across the fixed-side locking portion, forms the other end of the shaft member, and has an outer peripheral surface. A cylindrical fixed side caulking portion in which the thickness from the inner peripheral surface of the shaft through hole is constant in the circumferential direction of the shaft member;
With
The fixing member is formed with an insertion hole through which the shaft member is inserted,
A fixed-side locking groove is formed on the inner peripheral surface of the insertion hole of the fixing member,
When the fixed-side locking portion of the shaft member is inserted into the insertion hole of the fixed member, the fixed-side locking protrusion is fitted into the fixed-side locking groove, so that the fixed member rotates relative to the shaft member. Locked in impossible
The fixed-side caulking portion plastically deformed by the caulking process is fixed to the fixed-side caulking portion by caulking the fixed-side caulking portion in a state where the fixed-side locking portion of the shaft member is inserted into the insertion hole of the fixing member. The member is supported so as not to fall off from the shaft member,
A spacer member having a pair of end surfaces, an outer peripheral surface and an inner peripheral surface, formed in a short cylindrical shape in the axial direction, and having an insertion hole penetrating the pair of end surfaces,
The spacer member is inserted between the fixing member and the rotating member, the shaft member is inserted into the insertion hole of the spacer member, and the spacer member rotates relative to the fixing member and the shaft member. Locked in impossible,
Hinge. A frictional force generating member having an insertion hole through which the shaft member is inserted;
A second pressing side locking groove is formed on the inner peripheral surface of the insertion hole of the frictional force generating member,
When the pressing side locking portion of the shaft member is inserted through the insertion hole of the frictional force generating member, the pressing side locking projection is fitted into the second pressing side locking groove, whereby the frictional force generating member is The shaft member is locked so as not to rotate relative to the shaft member,
The rotating member is pivotally supported by the shaft support portion of the shaft member, and the pressing side locking portion of the shaft member is inserted into the insertion hole of the frictional force generating member, the insertion hole of the elastic member, and the insertion hole of the pressing member. By caulking the pressing side caulking portion in the inserted state, the pressing side caulking portion plastically deformed by the caulking processing causes the pressing member to move in the axial direction of the shaft member and the pressing member to the elastic member. The elastic member is pushed in the approaching direction, the pressing member abuts on the elastic member and pushes the elastic member in the axial direction of the shaft member and in the compressed direction, the elastic member elastically deforms, and the elastic member The generating member is pushed in the axial direction of the shaft member and in a direction in which the frictional force generating member approaches the rotating member, and the frictional force generating member comes into contact with the rotating member and rotates with the shaft member. A frictional force based on the elastic force of the elastic member is generated between the elastic member, a torque against the rotation of the rotating member with respect to the shaft member is generated, and the pressing side caulking portion that has been plastically deformed is rotated. A member, the frictional force generating member, the elastic member, and the pressing member are supported so as not to be detached from the shaft member;
The hinge according to claim 1. The fixing member and the first connection object are integrally formed,
The hinge according to claim 2 or claim 3. The rotating member and the second connection object are integrally formed,
The hinge according to any one of claims 1 to 3.

Images