JP7318503B2 - recording device, switchgear - Google Patents

Description

The present invention relates to a recording apparatus having a document reading unit for reading a document above a recording unit for recording on a medium. The present invention also relates to an opening/closing device including an apparatus main body and an opening/closing body that can be opened and closed with respect to the apparatus main body.

Recording devices typified by printers have a scanner unit on top of the main body of the device, which has a recording unit that records on the medium. There is something to be done.
Patent Literature 1 describes an example of such a configuration. An image reading and recording apparatus disclosed in Patent Document 1 includes an image reading unit above an image recording unit. The image reading unit is rotatably attached to the image recording unit via an opening/closing mechanism.

The opening/closing mechanism keeps the image reading unit open. The opening/closing mechanism includes a stay having a cam surface and a rotor. When the rotor rotates, it catches on the cam surface and the image reading unit is held in an open state.

JP 2018-19341 A

In the configuration described in Patent Document 1, the rotor rotates and is caught by the cam surface. When closing the image reading unit in an open state, the image reading unit is once lifted slightly to release the caught, and then the image reading unit is closed. It is necessary to close it, and the operation is difficult to understand intuitively and requires time and effort.
In order to avoid such a problem, as shown in FIG. 21, a simple shaft 102 is used in place of the rotor, the cam surface is formed in a simple arc shape, and an elastically deformable portion 101b is provided on the cam surface. , the elastically deforming portion 101b may be hooked on the shaft 102 by the elasticity of the elastic deformation portion 101b.

Reference numeral 101 denotes a stay, which is attached to the image reading unit. The shaft 102 is attached to the image recording unit and inserted into a cam groove 101 a formed in the stay 101 . A gear portion 101 c is formed on the outer peripheral portion of the stay, and the gear portion 101 c meshes with the gear 103 . The rotational torque of the gear 103 is transmitted to a damper mechanism (not shown) to reduce the speed at which the image reading unit closes.
The upper diagram in FIG. 21 shows the state in which the image reading unit is closed, the lower diagram in FIG. 21 shows the state in which the image reading unit is closed, and the central diagram in FIG. The unit is shown half-open. 21 showing the closed state of the image reading unit, when the image reading unit is opened, the stay 101 rotates together with the image reading unit, and the shaft 102 relatively moves within the cam groove 101a.

The width of the cam groove 101a is narrowed at the position of the elastically deforming portion 101b, and when changing from the middle drawing to the lower drawing in FIG. 21, the shaft 102 deforms the elastically deforming portion 101b to widen the groove width. . In the state shown in the lower diagram of FIG. 21, the elastically deforming portion 101b is hooked on the shaft 102, so that the image reading unit is held open.

By adopting the configuration shown in FIG. 21, unlike the image reading and recording apparatus described in Patent Document 1, it is not necessary to lift the image reading unit once when closing the image reading unit in an open state, and the operation is intuitive. This makes it easier to understand and easier to operate.
However, when the image reading unit is opened from the closed state, more specifically, in the process of changing from the central diagram to the lower diagram in FIG. In other words, the image recording unit may be lifted, and the image reading unit may not be opened properly. Such a problem is likely to occur particularly when the image recording unit is lightened.

In order to solve the above problems, the recording apparatus of the present invention includes a recording unit having a recording section for recording on a medium, and reading means for reading an original. a document reading unit that opens and closes an upper portion of the recording unit by moving; and holding means that holds the document reading unit in an open state, wherein the holding means is one of the recording unit and the document reading unit. and a groove forming member provided on the other side, the groove forming member is formed with a groove into which the shaft is inserted, and the shaft is inserted into the groove as the document reading unit is opened and closed. and an elastically deformable portion that is elastically deformable in a direction that narrows the width of the groove to a width smaller than the maximum diameter of the shaft and expands the width of the groove. and a holding portion for holding the document reading unit in an open state by holding the shaft, and the shaft has a shape whose radial dimension changes along the circumferential direction and is provided rotatably. , when the shaft passes through the elastic deformation portion in the process of opening the document reading unit from a closed state, the radial dimension of the shaft with respect to the width of the groove is smaller than the maximum diameter and equal to or smaller than the first dimension. is provided with rotation restricting means for restricting the rotation of the shaft.

1 is an external perspective view of a printer according to a first embodiment; FIG. 4 is an external perspective view of the printer with the scanner unit opened. FIG. 3 is an external perspective view of the inside of the printer; FIG. 4 is an external perspective view of the interior of the printer with the scanner unit opened. FIG. FIG. 4 is a perspective view of the peripheral configuration of the groove forming member; FIG. 4 is a perspective view of the peripheral configuration of the groove forming member; The upper figure is a front view of the groove forming member, and the lower figure is a sectional view of the groove forming member and the shaft. The upper figure is a front view of the groove forming member, and the lower figure is a sectional view of the groove forming member and the shaft. The upper figure is a front view of the groove forming member, and the lower figure is a sectional view of the groove forming member and the shaft. The upper figure is a front view of the groove forming member, and the lower figure is a sectional view of the groove forming member and the shaft. The figure which shows the relationship between groove width and the diameter of an axis|shaft. 4 is an external perspective view of the interior of the printer with the scanner unit opened. FIG. The upper figure is a cross-sectional view around the second hinge portion when the scanner unit is closed, and the lower figure is a cross-sectional view around the second hinge portion when the scanner unit is open. Fig. 10 shows another embodiment of a shaft; FIG. 4 is an external perspective view of a printer according to a second embodiment; 4 is an external perspective view of the printer with the scanner unit opened. FIG. FIG. 4 is a front view of the groove forming member; FIG. 4 is a front view of a contact portion included in a rotation restricting member and a restricting portion that restricts rotation of the contact portion; FIG. 4 is a front view of a contact portion included in a rotation restricting member and a restricting portion that restricts rotation of the contact portion; The figure which compares the shape of a 1st groove|channel and a 2nd groove|channel. The figure explaining the subject of this invention.

The present invention will be briefly described below.
A recording apparatus according to a first aspect includes a recording unit having a recording unit for recording on a medium, and reading means for reading a document, and is rotatably provided above the recording unit. A document reading unit that opens and closes an upper portion of a recording unit, and holding means that holds the document reading unit in an open state, wherein the holding means is a shaft provided on one of the recording unit and the document reading unit. and a groove forming member provided on the other side, the groove forming member is formed with a groove into which the shaft is inserted, and the shaft moves relative to the groove as the document reading unit is opened and closed. an elastically deformable portion that is elastically deformable in a direction of increasing the width of the groove while making the width of the groove narrower than the maximum diameter of the shaft; and the shaft is held by the elasticity of the elastically deformable portion. By doing so, a holding portion for holding the open state of the document reading unit is formed, and the shaft has a shape in which the radial dimension changes along the circumferential direction and is rotatably provided to the document reading unit. rotating the shaft so that the radial dimension of the shaft with respect to the width of the groove becomes equal to or less than a first dimension smaller than the maximum diameter when the shaft passes through the elastically deforming portion in the process of opening from the closed state. It is characterized by comprising rotation restricting means for restricting the

According to this aspect, in the configuration in which the document reading unit is held in the open state by holding the shaft in the holding portion by the elasticity of the elastic deformation portion formed in the groove forming member, the document reading unit is in the closed state. A rotation that restricts the rotation of the shaft so that the radial dimension of the shaft with respect to the width of the groove is equal to or less than a first dimension smaller than the maximum diameter when the elastically deformable portion passes through the shaft in the process of opening from the Since the restricting means is provided, the load when the elastically deformable portion passes through the shaft is reduced or eliminated, and the risk of lifting the shaft, that is, the recording unit when the document reading unit is opened is reduced. do.

In a second aspect based on the first aspect, the rotation restricting means includes a rotation restricting member attached to the shaft and the groove forming member, and rotates the rotation restricting member as the document reading unit rotates. and a rib for switching between a state of contacting with and a state of being separated from the rotation restricting member, and a radial dimension of the shaft with respect to the width of the groove in the elastically deformable portion, the rotation restricting in a direction in which the radial dimension becomes larger than the first dimension. a spring that applies a pressing force to a member, and the rib contacts the rotation restricting member so that the radial dimension of the shaft with respect to the width of the groove in the elastic deformation portion resists the pressing force of the spring. and the rib is separated from the rotation restricting member, the shaft is rotated by the pressing force of the spring, and the diameter of the shaft with respect to the width of the groove in the elastic deformation portion A directional dimension is characterized by being larger than the first dimension.
According to this aspect, since the rotation restricting means includes the rotation restricting member, the rib, and the spring, the rotation restricting means can be configured at low cost.

A third aspect is the second aspect, wherein the rib contacts the rotation restricting member when the document reading unit is closed by a predetermined angle from a state in which the shaft is held by the holding portion.
It is characterized by
According to this aspect, the rib abuts against the rotation restricting member when the document reading unit is closed by a predetermined angle from a state in which the shaft is held by the holding portion. As a result, the radial dimension of the shaft with respect to the width of the groove does not immediately decrease, and the open state of the document reading unit can be reliably maintained.

According to a fourth aspect, in any one of the first to third aspects, the shaft has a shape in which a part of the circumference is notched when viewed from the axial direction, so that the radial dimension extends in the circumferential direction. It is characterized by changing along
According to this aspect, the shaft has a shape in which a part of the circumference is notched when viewed from the axial direction, so that the radial dimension changes along the circumferential direction. can be obtained with a simple structure and at low cost.

In a fifth aspect, in any one of the first to fourth aspects, the document reading unit includes a first hinge provided at one end of the document reading unit in the rotation axis direction and the other end. provided in the recording unit via a second hinge portion provided in the recording unit, the shaft, the groove forming member, and the rotation restricting means are provided on the side of the first hinge portion in the direction of the rotation axis; Supporting means for supporting the document reading unit when the document reading unit is opened is provided on the side of the second hinge portion in the rotation axis direction.

In a configuration in which the shaft, the groove forming member, and the rotation restricting means are provided on the side of the first hinge portion in the rotation axis direction, the document reading unit may sink downward at the second hinge portion. There is According to this aspect, since the support means for supporting the document reading unit in a state in which the document reading unit is opened is provided on the side of the second hinge portion in the direction of the rotation axis, the side of the second hinge portion is provided. It is possible to suppress the downward sinking of the document reading unit in .

In a sixth aspect based on the second or third aspect, the document reading unit is provided at a first hinge provided at one end of the document reading unit and at the other end in the rotation axis direction. A first holding means, which is the holding means, is provided on the recording unit via a second hinge portion that is provided on the side of the first hinge portion, and the holding means is on the side of the second hinge portion. A second holding means is provided.
According to this aspect, since the holding means is provided for both the first hinge portion and the second hinge portion, when the document reading unit is opened, the side of the first hinge portion can be Alternatively, it is possible to suppress the downward sinking of the document reading unit on the side of the second hinge portion.

A seventh aspect is the sixth aspect, wherein at least one of the first holding means and the second holding means is provided with a damper for attenuating the closing speed of the document reading unit. Characterized by
According to this aspect, since at least one of the first holding means and the second holding means is provided with a damper for damping the closing speed of the document reading unit, the document reading unit is closed. Even if the user removes his/her hands, the document reading unit can be prevented from closing with force and causing a loud collision sound or being damaged.

According to an eighth aspect, in the sixth or seventh aspect, the holding means prevents the rotation of the rotation restricting member by abutting the abutting portion provided on the rotation restricting member with the abutting portion. a regulating portion for regulating, and in a state in which the shaft enters the holding portion, the contact portion presses against the regulating portion due to the pressing force of the spring, and the groove forming member provided in the first holding means. is formed with a first groove as the groove, and the groove forming member provided in the second holding means is formed with a second groove as the groove, and when the document reading unit is opened, the first groove is formed as the groove. The timing at which the shaft enters the holding portion formed in the second groove is earlier than the timing at which the shaft enters the holding portion formed in the first groove, and the first holding means and the second holding means Of these, only the restricting portion of the second holding means is made of an elastic material that reduces contact noise when the contact portion contacts.

The holding means is configured such that when the shaft enters the holding portion, a contact portion provided on the rotation restricting member contacts the restricting portion by a pressing force of the spring, thereby stopping the rotation of the rotation restricting member. Therefore, a contact sound is generated when the contact portion contacts the restricting portion, and the user can determine that the document reading unit is held in the open state by the contact sound.
Here, when opening the document reading unit, if there is a difference between the timing at which the contact sound is generated at the first holding means and the timing at which the contact sound is generated at the second holding means, the user must first The operation to open the document reading unit is stopped at the timing when the contact sound is generated, and as a result, there is a possibility that one of the first holding means and the second holding means cannot shift to the holding state. There is a possibility that the document reading unit sinks downward on the side that does not shift to . Note that the holding state refers to a state in which the shaft enters the holding portion.

However, in this aspect, when the document reading unit is opened, the timing at which the shaft enters the holding portion formed in the second groove is such that the shaft enters the holding portion formed in the first groove. Of the first holding means and the second holding means, only the regulating portion of the second holding means is formed of an elastic material that reduces contact noise when the contact portions are brought into contact. Therefore, the second holding means enters the holding state before the first holding means, and at that time, the contact sound is less likely to occur, so the user continues the operation of opening the document reading unit. can be expected. When the first holding means is in the holding state, the contact sound is likely to occur, and when the user stops the operation of opening the document reading unit due to the contact sound, the first holding means and Both of the second holding means are in the holding state. As described above, it is possible to prevent the user from stopping the operation of opening the document reading unit while one of the first holding means and the second holding means is not shifted to the holding state. Both of the second holding means can be appropriately shifted to the holding state.

A ninth aspect is characterized in that, in the eighth aspect, the document reading unit includes an operation panel near the second hinge portion in the rotation axis direction.
In a configuration in which the document reading unit includes an operation panel near the second hinge portion in the rotation axis direction, when the document reading unit is opened, the side on which the operation panel is provided sinks downward due to its weight, and the The first holding means is likely to be in the holding state before the second holding means, so that the opening operation of the document reading unit is likely to be stopped without the second holding means being in the holding state. However, the effects of the eighth aspect described above can suppress the occurrence of such problems.

An opening/closing device according to a tenth aspect includes a device main body, an opening/closing body provided rotatably at an upper portion of the device main body, the opening/closing body opening and closing the upper portion of the device main body by rotating, and the opening/closing body being opened. holding means for holding the state, wherein the holding means comprises a shaft provided on one of the apparatus main body and the opening/closing body, and a groove forming member provided on the other; the groove forming member includes: A groove into which the shaft is inserted is formed, the shaft moves relative to the groove as the opening/closing body is opened and closed, and the width of the groove is narrower than the maximum diameter of the shaft. an elastically deformable portion that is elastically deformable in the direction of widening the width of the groove; and a holding portion that holds the shaft by the elasticity of the elastically deformable portion to hold the opening state of the opening and closing body. The shaft has a shape whose radial dimension changes along the circumferential direction and is provided rotatably. rotation restricting means for restricting the rotation of the shaft so that the radial dimension of the shaft with respect to the width of the shaft is equal to or less than a first dimension smaller than the maximum diameter.

According to this aspect, in the configuration in which the opening/closing body is held in the open state by holding the shaft in the holding portion by the elasticity of the elastic deformation portion formed in the groove forming member, the opening/closing body opens from the closed state. Rotation restricting means for restricting rotation of the shaft so that, when the elastically deformable portion passes through the shaft in the process, the radial dimension of the shaft with respect to the width of the groove is equal to or less than a first dimension smaller than the maximum diameter. Therefore, the load when the elastically deformable portion passes through the shaft is reduced or eliminated, and the risk of lifting the shaft, that is, the recording unit when opening the opening/closing body is reduced.

The present invention will be specifically described below.
[First embodiment]
In the first embodiment, an inkjet printer 1 is taken as an example of a recording apparatus. The inkjet printer 1 is simply referred to as printer 1 below.
In the XYZ coordinate system shown in each drawing, the X-axis direction is the device width direction, the Y-axis direction is the device depth direction, and the Z-axis direction is the device height direction. The +Y direction is the direction from the back of the device to the front, and the -Y direction is the direction from the front to the back of the device. Also, when viewed from the front of the device, the left side is the +X direction and the right side is the -X direction. The +Z direction is defined as upward, and the -Z direction is defined as downward.
Further, the direction in which the medium is transported in the printer 1 is called "downstream", and the opposite direction is called "upstream".

The printer 1 shown in FIG. 1 includes a recording unit 2 as an apparatus body including a recording unit 8 for recording on a medium, and a scanner as a document reading unit provided above the recording unit 2 for reading an image of a document. a unit 4; That is, the printer 1 is configured as a multi-function machine having an image reading function in addition to the recording function. Recording paper is an example of the medium.

In the printer 1, a recording unit 8 includes a recording head 9 that ejects ink as liquid and a carriage 10 that supports the recording head 9. Recording is performed by ejecting ink from the recording head 9 toward a medium. will be The carriage 10 reciprocates in the X-axis direction under the power of a motor (not shown).

The outer shell of the recording unit 2 is composed of a housing 3 . A feed port cover 12 is provided at the rear of the recording unit 2 so that it can be opened and closed. By opening the feed port cover 12, a medium feed port (not shown) is exposed.
A scanner unit 4 is provided above the recording unit 2 . The scanner unit 4 has a rotation axis (not shown) for rotating in the rear of the device, ie, the -Y direction, and rotates with the front of the device, ie, the +Y direction as a free end, so that the upper portion of the recording unit 2 can be opened and closed. It is A straight line R in FIGS. 1 and 2 indicates the rotation axis of the scanner unit 4 . A straight line R is a straight line parallel to the X axis. 1 shows a closed state in which the scanner unit 4 is closed with respect to the recording unit 2, and FIG. 2 shows a state in which the scanner unit 4 is completely opened with respect to the recording unit 2. FIG.

The scanner unit 4 includes a scanner main body 13 having a reading sensor 15 as reading means for reading a document, a document platen 14 on which the document is placed, and a document platen cover 5 capable of opening and closing the document platen 14 . The reading sensor 15 extends in the Y-axis direction and moves in the X-axis direction by receiving power from a motor (not shown).

Next, a panel unit 11 having an operation section 6 is provided in the scanner unit 4 in the +Y direction, which is the front of the printer 1 . The operation unit 6 can perform various setting operations and execution operations for recording and image reading, as well as preview display of setting contents and images.

A lower cover 7 is provided below the front surface of the recording unit 2 . The lower cover 7 is openable and closable, and when opened, a medium tray (not shown) for storing a medium before recording and a discharge tray (not shown) for receiving a medium discharged after recording are exposed.

The schematic configuration of the printer 1 has been described above, and the holding means 23 for holding the open state of the scanner unit 4 will be described below with reference to FIG. 3 and subsequent drawings.
The scanner unit 4 has a first hinge portion 21 (see FIGS. 2 and 3) provided in the +X direction and a second hinge portion 22 (see FIGS. 12) in the recording unit 2.

On the side of the first hinge portion 21, as shown in FIGS. 3 to 5, holding means 23 for holding the open state of the scanner unit 4 is provided. More specifically, the scanner unit 4 is provided with a mounting portion 24 as shown in FIG. 3, and the mounting portion 24 is provided with a groove forming member 25 as shown in FIG. A guide member 32 that guides a later-described rotation restricting member 30 is provided in the +X direction with respect to the groove forming member 25 . 5 to 11 show the state in which the guide member 32 is removed. 6, 11, and 7 to 10 show a state in which the rotation restricting member 30 is further removed.

5 and 6, the groove forming member 25 is formed with grooves 25a. The groove 25a extends in the circumferential direction around the rotation axis R (see FIG. 1). The groove forming member 25 rotates around the rotation axis R together with the scanner unit 4 .
A shaft 27 is provided in the recording unit 2, and the shaft 27 is inserted into the groove 25a. The groove 25a has an elastically deformable portion 25b that is elastically deformable in the direction of widening the groove width of the groove 25a, and a holding portion 25e that holds the shaft 27 by the elasticity of the elastically deformable portion 25b to hold the scanner unit 4 in the open state. and are provided. When the scanner unit 4 is opened, the shaft 27 is inserted into the holding portion 25e as shown in FIG.
The groove forming member 25 and the shaft 27 constitute holding means 23 .

In FIG. 11, symbol h1 is the minimum width of the groove 25a at the position of the elastic deformation portion 25b, and symbol d1 is the maximum diameter of the shaft 27. As shown in FIG. The maximum diameter d1 of the shaft 27 is larger than the minimum width h1 of the groove 25a, so that when the scanner unit 4 is open, the elastically deformable portion 25b is caught by the shaft 27 as shown in the lower diagram of FIG. is held open. The elastically deformable portion 25b is elastically deformable in the width direction of the shaft 25a. When the scanner unit 4 is closed from the state shown in FIG. The position of axis 27 can be passed as shown in the transition from FIG. 10 to FIG. When the scanner unit 4 is closed from the open state, the state changes in the order of FIGS. 10, 9, 8 and 7 .

A gear portion 25c (see the lower diagrams of FIGS. 7 to 10) is formed on the outer peripheral portion of the groove forming member 25, and the gear portion 25c meshes with the gear 35. As shown in FIG. Rotational torque of the gear 35 is transmitted to the damper 38 via the gears 36 and 37, and the damper 38 reduces the speed when the scanner unit 4 is closed.

When the scanner unit 4 is opened from the closed state, the state changes in the order of FIGS. Here, in the process of changing from FIG. 9 to FIG. 10, if the elastically deformable portion 25b passes through the maximum diameter of the shaft 27, the elastic deformation of the elastically deformable portion 25b is insufficient to lift the shaft 27. In other words, the recording unit 2 may be lifted and the scanner unit 4 may not be opened properly. Such a problem is likely to occur particularly when the recording unit 2 is lightened. Therefore, in this embodiment, the following configuration is adopted.

The shaft 27 extends in the X-axis direction, has a center axis parallel to the X-axis direction, and is rotatable around the center axis. A portion of the shaft 27 in the axial direction, more specifically, a portion passing through the groove 25a, has a shape in which a portion of the circumference is notched as shown in FIG. d2 is formed.
Since the shaft 27 has a shape in which a part of the circumference is notched when viewed from the axial direction, the radial dimension changes along the circumferential direction. can be obtained at low cost with a simple structure.
The shaft 27 has a "D" shape when viewed from the axial direction by partially notching the circumference, but is not limited to this. Any shape may be used as long as the dimensions change along the circumferential direction.

A rotation restricting member 30 is fixed to the tip of the shaft 27 . The rotation restricting member 30 has a first restricted portion 30a, and is given a spring force by a spring 31 shown in FIG. 5 so as to rotate counterclockwise in FIGS. As a result, when no external force other than the spring 31 is acting on the rotation restricting member 30, especially when the shaft 27 is in the holding portion 25e, the shaft 27 is in the state shown in FIG. On the other hand, the maximum diameter is faced, and the elastically deformable portion 25b is reliably hooked on the shaft 27 .
As shown in FIG. 19, the rotation restricting member 30 is provided with an abutting portion 30b, and the abutting portion 30b abuts against a restricting portion 32b provided on the guide member 32 so that the shaft 27 is rotated. It is configured such that the rotation of the shaft 27 is stopped in the state of entering the holding portion 25e.
The +X direction end of the rotation restricting member 30 enters a groove (not shown) formed in the guide member 32 (see FIGS. 3 and 4) and is guided by the guide member 32 . The groove (not shown) extends in the circumferential direction around the rotation axis R (see FIG. 1), like the groove 25a.

Next, as shown in FIGS. 5 and 6, the groove forming member 25 is formed with ribs 25d along the grooves 25a. Like the groove 25a, the rib 25d extends in the circumferential direction around the rotation axis R (see FIG. 1). The rib 25d, the rotation restricting member 30, and the spring 31 constitute the rotation restricting means 29. As shown in FIG.
When the scanner unit 4 is closed, the first regulated portion 30a of the rotation regulating member 30 contacts the rib 25d from above as shown in the upper diagram of FIG. Thus, against the spring force of the spring 31 (see FIG. 5), the shaft 27 maintains the state in which the notch 27a faces the inner periphery of the groove 25a as shown in the lower diagram of FIG. This state is maintained until the rib 25d exits the first regulated portion 30a as the scanner unit 4 rotates.

After the state shown in FIG. 7 passes through the state shown in FIG. 8, the rib 25d exits the first regulated portion 30a as shown in FIG. 9 as the scanner unit 4 rotates. As a result, the rotation restricting member 30, that is, the shaft 27 rotates counterclockwise in FIG.
Here, in FIG. 11, reference numeral K1 denotes the formation range of the elastic deformation portion 25b. When the rib 25d leaves the first regulated portion 30a as the scanner unit 4 rotates, the shaft 27 enters the forming range K1 of the elastic deformation portion 25b. Therefore, even if the rib 25d exits the first regulated portion 30a as the scanner unit 4 rotates, the notch 27a of the shaft 27 abuts against the inner periphery of the groove 25a, thereby regulating the rotation of the shaft 27 until the state shown in FIG. Do not rotate. The formation range of the rib 25d and the formation range of the elastically deformable portion 25b are set so as to realize the above.

In other words, when the scanner unit 4 is closed at a predetermined angle from the state in which the scanner unit 4 is maintained in the open state (the state shown in FIG. 10) by the elastically deformable portion 25b being caught by the shaft 27, the rib 25d is moved to the rotation restricting member 30. It is the structure which abuts on. With such a configuration, the elastically deformable portion 25b can be reliably caught on the shaft 27, and the scanner unit 4 can be reliably held in the open state (the state shown in FIG. 10).

When the elastically deformable portion 25b passes through the shaft 27 in the process of opening the scanner unit 4 from the closed state, the rotation restricting means 29 is configured such that the radial dimension of the shaft 27 with respect to the width of the groove 25a is a first dimension smaller than the maximum diameter. The rotation of the shaft 27 is restricted as follows. The first dimension is the same as the width of the groove 25a in the elastic deformation portion 25b in this embodiment, and is larger than the diameter d2 shown in FIG.
As a result, the load when the elastic deformation portion 25b passes through the shaft 27 is reduced, and the risk of lifting the shaft 27, ie, the recording unit 2, when opening the scanner unit 4 is reduced.

Further, the rotation restricting means 29 is provided on the rotation restricting member 30 attached to the shaft 27 and the groove forming member 25, and is in contact with the rotation restricting member 30 and separated from the rotation restricting member 30 as the scanner unit 4 rotates. and a rib 25d for switching between the state and the spring 31 that applies a pressing force to the rotation restricting member 30 in the direction in which the radial dimension of the shaft 27 with respect to the width of the groove 25a in the elastic deformation portion 25b becomes larger than the first dimension. and
When the rib 25d contacts the rotation restricting member 30, the radial dimension of the shaft 27 with respect to the width of the groove 25a in the elastic deformation portion 25b is maintained at the first dimension or less against the pressing force of the spring 31 (FIG. 9). state). When the rib 25d is separated from the rotation restricting member 30, the shaft 27 is rotated by the pressing force of the spring 31, and the radial dimension of the shaft 27 with respect to the width of the groove 25a in the elastic deformation portion 25b becomes larger than the first dimension ( state of FIG. 10).
With such a configuration, the rotation restricting means 29 can be configured at low cost.

The rotation restricting means 29 includes a motor for rotating the shaft 27, attitude detecting means for detecting the attitude of the scanner unit 4, and control means for controlling the motor based on information detected by the attitude detecting means. It may be configured. That is, by controlling the power of the motor so that the shaft 27 is not caught by the elastic deformation portion 25b when the scanner unit 4 is opened, there is a risk that the shaft 27, that is, the recording unit 2, is lifted when the scanner unit 4 is opened. Reduce.

The shaft 27 and groove forming member 25 described above are provided on the side of the first hinge portion 21 (see FIGS. 2 and 3) in the X-axis direction. A support means 40 for supporting the scanner unit 4 when the scanner unit 4 is open is provided on the side of the second hinge portion 22 (see FIG. 12). The support means 40 includes a support portion 42 provided in the recording unit 2 and a supported portion 41 provided in the scanner unit 4 .
That is, in the configuration in which the configuration for holding the open state of the scanner unit 4 is provided only on the first hinge portion 21 side, the scanner unit 4 may sink downward on the second hinge portion 22 side. A supporting means 40 is provided on the second hinge portion 22 side, and the supported portion 41 is supported by the supporting portion 42 when the scanner unit 4 is open. can suppress the downward subduction of
A free stop hinge for holding the opening angle of the scanner unit 4 may be provided instead of or in addition to the support means 40 . In that case, it is preferable that the rotational resistance generated by the free stop hinge when closing the scanner unit 4 is smaller than the rotational resistance generated by the damper 38 (see FIGS. 5 and 6) on the first hinge portion 21 side.

[Second embodiment]
The second embodiment will be described below with reference to FIGS. 15 to 20. FIG. 15 to 20, the same reference numerals are assigned to the same configurations as in the first embodiment, and duplicate descriptions will be avoided below.
15 and 16, the printer 1A according to the second embodiment has a scanner unit 4A as a document reading unit. The scanner unit 4A is provided with a panel unit 11 near the -X direction in the rotation axis direction, ie, the X-axis direction. The panel unit 11 is composed of the operation section 6 . As a result, the scanner unit 4A is configured such that the −X direction side where the panel unit 11 is provided tends to sink downward when opened.

The printer 1A is provided with holding means 23 on the first hinge portion 21 side, and is provided with holding means 23A on the second hinge portion 22 side. Below, the holding means 23 is called the first holding means 23, and the holding means 23A is called the second holding means 23A. The first holding means 23 has the same configuration as the holding means 23 according to the first embodiment described above, and the second holding means 23A does not have a damper 38 in comparison with the first holding means 23, The difference is that the shape of the groove into which the scanner unit 4A is inserted is slightly different, and that means for suppressing contact noise (described later) when the scanner unit 4A is held open is provided. These differences will be further explained later.

In the printer 1A, since the holding means is provided for both the first hinge portion 21 and the second hinge portion 22, when the scanner unit 4A is opened, the first hinge portion 21 side or the second hinge portion is held. The sinking of the scanner unit 4A on the portion 22 side can be suppressed.
The holding force of each holding means is determined by the magnitude of elasticity of the elastic deformation portion 25b when the shaft 27 enters the holding portion 25e as shown in FIG. The means 23 and the second holding means 23A may be set the same or may be set differently.

Also in the printer 1A, as in the first embodiment described above, the damper 38 is provided. Therefore, even if the user releases the hand when closing the scanner unit 4A, the scanner unit 4A closes vigorously and a large collision occurs. It is possible to suppress the risk of noise or damage. In this embodiment, the damper 38 is provided for the first holding means 23 on the first hinge portion 21 side, but the damper 38 may be provided for the second holding means 23A on the second hinge portion 22 side. Alternatively, dampers 38 may be provided for both the first holding means 23 and the second holding means 23A. By providing dampers 38 for both the first holding means 23 and the second holding means 23A, the scanner unit 4A can maintain a horizontal posture when the scanner unit 4A is closed.

Next, as shown in FIGS. 18 and 19, the rotation restricting member 30 is provided with a contact portion 30b. By abutting against the restricting portion 32c (see FIG. 18), the rotation of the shaft 27 is stopped when the shaft 27 is in the holding portion 25e as shown in FIG.
Here, FIG. 18 shows the state of the contact portion 30b and the restricting portion 32c in the second holding means 23A, and FIG. 19 shows the state of the contact portion 30b and the restricting portion 32b in the first holding means 23. ing. The configuration shown in FIG. 19 is also employed in the first embodiment described above.
In FIG. 18, unlike the regulating portion 32b of the first holding means 23, the regulating portion 32c of the second holding means 23A is made of an elastic material. The elastic material forming the restricting portion 32c is an elastic material such as rubber or sponge. That is, when the shaft 27 enters the holding portion 25e in the process of opening the scanner unit 4A, the spring force of the spring 31 (see FIG. 5) rotates the shaft 27, that is, the rotation restricting member 30, and the first holding means 23 restricts rotation. The contact portion 30b of the member 30 contacts the restricting portion 32b to generate a contact sound. The restriction portion 32b is formed integrally with the guide member 32, and is made of a resin material in this embodiment.
On the other hand, in the second holding means 23A, the restricting portion 32c is made of an elastic material so as to suppress the contact noise. The reason for this will be explained later.

Subsequently, as shown in FIG. 17, the second holding means 23A has a groove forming member 25A, and a groove 25g is formed in the groove forming member 25A. The shape of the groove 25g is slightly different from the shape of the groove 25a in the first holding means 23 (see FIGS. 7 to 11). The reason for this will be explained below. The groove 25a is hereinafter referred to as the first groove 25a, and the groove 25g is referred to as the second groove 25g.
When the shaft 27 enters the holding portion 25e as described above, the contact portion 30b provided on the rotation restricting member 30 contacts the restricting portion 32b of the first holding means 23, thereby generating a contact sound. can be determined that the scanner unit 4A is held in the open state by the contact sound.

Here, assuming that the contact sound is generated also in the second holding means 23A, when the scanner unit 4A is opened, the timing at which the contact sound is generated in the first holding means 23 and in the second holding means 23A There may be a time lag between the timing at which the contact sound is generated. In this case, the user stops the operation of opening the scanner unit 4A at the timing when the contact sound is first generated, and there is a possibility that one of the first holding means 23 and the second holding means 23A cannot shift to the holding state. In this case, there is a possibility that the scanner unit 4A will sink downward on the side that does not shift to the holding state. The holding state refers to a state in which the shaft 27 is inserted into the holding portion 25e.

In order to suppress such a problem, as shown in FIG. 20, the second groove 25g is arranged such that the position of the holding portion 25e is shifted slightly to the right in FIG. is set. As a result, the timing at which the shaft 27 enters the holding portion 25e when the scanner unit 4A is opened is earlier in the second groove 25g than in the first groove 25a, as shown in FIG. That is, the second holding means 23A shifts to the holding state earlier than the first holding means 23 does. In addition, in FIG. 20, for convenience of explanation, the grooves 25a and 25b are drawn with different attitudes.

As described with reference to FIG. 18, of the first holding means 23 and the second holding means 23A, the restricting portion 32c of the second holding means 23A is formed of an elastic material so as to suppress the contact noise. It is Therefore, when the second holding means 23A enters the holding state before the first holding means 23, the abutting sound is less likely to occur, so it can be expected that the user will continue to open the scanner unit 4A. When the first holding means 23 is in the holding state, the contact sound is likely to be generated, and when the user stops opening the scanner unit 4A due to the contact sound, the first holding means 23 and the 2 Both of the holding means 23A are in the holding state. As described above, it is possible to prevent the user from stopping the operation of opening the scanner unit 4A before one of the first holding means 23 and the second holding means 23A shifts to the holding state. 23A can properly transition to the holding state.

Particularly in this embodiment, the scanner unit 4A includes the panel unit 11 as an operation panel near the second hinge portion 22 in the rotation axis direction. Therefore, when the scanner unit 4A is opened, the side on which the panel unit 11 is provided sinks downward due to its weight, and the first holding means 23 tends to be in the holding state before the second holding means 23A. 2) It is easy to stop the operation of opening the scanner unit 4A before the holding means 23A shifts to the holding state. However, as described above, the second holding means 23A enters the holding state first, and at that time, the abutting sound is less likely to occur. You can prevent being stopped.
A weight may be provided on the side opposite to the side on which the panel unit 11 is provided in the direction of the rotation axis so as to balance the weight in the direction of the rotation axis.

It goes without saying that the present invention is not limited to the above-described embodiments, and that various modifications are possible within the scope of the invention described in the claims, which are also included in the scope of the present invention. stomach.
For example, in the above embodiment, the scanner unit 4 is provided with the groove forming member 25 and the recording unit 2 is provided with the shaft 27 . You can set it. That is, it is sufficient that the shaft 27 moves relatively within the groove 25a. This applies not only to the first embodiment but also to the second embodiment.
In each embodiment, the elastically deforming portion 25b of the groove forming member 25 is configured to be elastically deformed by the elasticity of the groove forming member 25 itself. You can use it. Moreover, although the shaft 27 is a metal shaft, it may be a resin shaft.

Further, in each of the above-described embodiments, the shaft 27 is configured to change its radial dimension as it rotates. However, as shown in FIG. Also good. Reference numeral 28 in FIG. 14 denotes a shaft according to another embodiment, which is provided in the recording unit 2. As shown in FIG. The shaft 28 is inserted into the groove 25a and is slidable in the vertical direction of FIG. 14, that is, in the X-axis direction. The tip of the shaft 28 is in contact with the guide member 34, and the shaft 28 is pushed toward the guide member 34 by a spring (not shown). Guide member 34 is a modification of guide member 32 shown in FIG.
Cam surfaces 34a, 34b, and 34c are formed on the guide member 34, and as the scanner unit 4 is opened and closed, the tip of the shaft 28 moves from the cam surface 34a toward the cam surface 34c, or moves away from the cam surface 34c. It moves toward the cam surface 34a.

A large-diameter portion 28a and a small-diameter portion 28b are formed on the shaft 28, and in the upper view of FIG. there is This state corresponds to the state shown in FIG.
14, the tip of the shaft 28 is in contact with the cam surface 34c, and the small diameter portion 28b faces the groove 25a. This state corresponds to the states shown in FIGS.
With such a configuration, the same effects as those of the above-described embodiment can be obtained.

In each of the above-described embodiments, the opening/closing structure is applied to the scanner unit 4, which is an example of an opening/closing body. It is also possible to adopt a configuration in which the document transporting device is opened and closed with respect to the scanner main body by using the transporting device as an opening/closing body.
Alternatively, the present invention can be applied to an opening/closing device including a device main body and an opening/closing body. Specifically, the opening/closing device includes a device body and an opening/closing body that is rotatably provided in the upper portion of the device body and opens and closes the upper portion of the device body by rotating. The device main body is provided with a shaft, and the opening/closing body is provided with a groove forming member formed with a groove into which the shaft is inserted and which moves relative to the shaft as the opening/closing body is opened and closed. The groove is provided with an elastically deformable portion that is elastically deformable in a direction that makes the width of the groove narrower than the maximum diameter of the shaft and expands the width of the groove, and the elastically deformable portion is caught by the shaft. , the open state of the opening/closing body is maintained. The shaft has a shape whose radial dimension varies along the circumferential direction and is rotatably provided. In the opening/closing device, when the elastic deformation portion passes through the shaft in the process of opening the opening/closing body from the closed state, the radial dimension of the shaft with respect to the width of the groove becomes a first dimension smaller than the maximum dimension. A rotation restricting means for restricting the rotation of the shaft is also provided. As a result, when the opening/closing body is opened, the load caused by the elastically deformable portion passing through the shaft is reduced or eliminated, and the shaft, that is, the apparatus body is lifted when the opening/closing body is opened. This reduces the risk of being lost.

DESCRIPTION OF SYMBOLS 1... Inkjet printer, 2... Recording unit, 3... Case, 4, 4A... Scanner unit, 5... Document cover, 6... Operation part, 7... Lower cover, 8... Recording part, 9... Recording head, 10... Carriage 11 Panel unit 12 Feed port cover 13 Scanner main body 14 Document table 15 Reading sensor 21 First hinge 22 Second hinge 23 Holding means (first holding means), 23A...second holding means, 24...mounting portion, 25, 25A...groove forming member, 25a...groove (first groove), 25b...elastic deformation portion, 25c...gear portion, 25d...rib, 25e ... Holding portion 25g ... Groove (second groove) 27 ... Shaft 27a ... Notch 29 ... Rotation restricting means 30 ... Rotation restricting member 30a ... First restricted portion 30b ... Contact portion DESCRIPTION OF SYMBOLS 31... Spring 32... Guide member 32b... Regulating part 32c... Regulating part 33... Elastic member 34... Guide member 34a, 34b, 34c... Cam surface 35, 36, 37... Gears 38... Damper, 40...Supporting means, 41...Supported portion, 42...Supporting portion

Claims (10)

a recording unit including a recording unit that records on a medium;
a document reading unit including reading means for reading a document and rotatably provided above the recording unit for opening and closing the upper portion of the recording unit by rotating;
holding means for holding the document reading unit in an open state,
the holding means includes a shaft provided on one of the recording unit and the document reading unit, and a groove forming member provided on the other;
A groove into which the shaft is inserted is formed in the groove forming member, and the shaft moves relative to the groove as the document reading unit is opened and closed,
The groove includes an elastically deformable portion that is narrower than the maximum diameter of the shaft and is elastically deformable in a direction of increasing the width of the groove, and the shaft is held by the elasticity of the elastically deformable portion. a holding portion for holding the document reading unit in an open state;
The shaft has a shape whose radial dimension changes along the circumferential direction and is provided rotatably,
When the shaft passes through the elastic deformation portion in the process of opening the document reading unit from the closed state, the radial dimension of the shaft with respect to the width of the groove is smaller than the maximum diameter and equal to or smaller than the first dimension. Rotation restricting means for restricting rotation of the shaft,
A recording device characterized by: 2. The recording apparatus according to claim 1, wherein said rotation restricting means includes a rotation restricting member attached to said shaft;
a rib provided on the groove forming member for switching between a state of contacting the rotation restricting member and a state of being separated from the rotation restricting member as the document reading unit rotates;
a spring that applies a pressing force to the rotation restricting member in a direction in which the radial dimension of the shaft with respect to the width of the groove in the elastic deformation portion is larger than the first dimension;
By contacting the rib with the rotation restricting member, the radial dimension of the shaft with respect to the width of the groove in the elastically deforming portion is maintained at the first dimension or less against the pressing force of the spring,
When the rib is separated from the rotation restricting member, the shaft is rotated by the pressing force of the spring, and the radial dimension of the shaft with respect to the width of the groove in the elastic deformation portion becomes larger than the first dimension.
A recording device characterized by: 3. The recording apparatus according to claim 2, wherein the rib contacts the rotation restricting member when the document reading unit is closed by a predetermined angle from a state in which the shaft is held by the holding portion.
A recording device characterized by: 4. The recording apparatus according to any one of claims 1 to 3, wherein the shaft has a shape in which a part of the circumference is notched when viewed from the axial direction, so that the radial dimension is change along the
A recording device characterized by: 5. The recording apparatus according to any one of claims 1 to 4, wherein the document reading unit includes a first hinge provided at one end of the document reading unit in the rotation axis direction and the other side end. provided in the recording unit via a second hinge portion provided in the portion,
The shaft, the groove forming member, and the rotation restricting means are provided on the side of the first hinge portion in the direction of the rotation axis,
A support means for supporting the document reading unit when the document reading unit is opened is provided on the side of the second hinge portion in the rotation axis direction.
A recording device characterized by: 4. The recording apparatus according to claim 2, wherein the document reading unit is provided at a first hinge provided at one end of the document reading unit and at the other end in the rotation axis direction. provided in the recording unit via a second hinge,
A first holding means, which is the holding means, is provided on the side of the first hinge portion,
A second holding means, which is the holding means, is provided on the side of the second hinge portion,
A recording device characterized by: 7. The recording apparatus according to claim 6, wherein at least one of said first holding means and said second holding means is provided with a damper for attenuating a speed at which said document reading unit closes.
A recording device characterized by: 8. The recording apparatus according to claim 6, wherein the holding means restricts the rotation of the rotation restricting member by abutting the contact portion provided on the rotation restricting member with the contact portion. a regulating portion, wherein in a state in which the shaft enters the holding portion, the contact portion presses against the regulating portion by a pressing force of the spring;
A first groove as the groove is formed in the groove forming member provided in the first holding means,
a second groove as the groove is formed in the groove forming member included in the second holding means;
when the document reading unit is opened, the timing at which the shaft enters the holding portion formed in the second groove is earlier than the timing at which the shaft enters the holding portion formed in the first groove;
Of the first holding means and the second holding means, only the restricting portion of the second holding means is made of an elastic material that reduces a contact sound when the contact portion abuts,
A recording device characterized by: 9. The recording apparatus according to claim 8, wherein said document reading unit includes an operation panel near said second hinge portion in the rotation axis direction.
A recording device characterized by: a device body;
an opening/closing body provided rotatably in the upper part of the device main body and configured to open and close the upper part of the device main body by rotating;
holding means for holding the opening/closing body in an open state,
the holding means comprises a shaft provided on one of the apparatus main body and the opening/closing body, and a groove forming member provided on the other;
A groove into which the shaft is inserted is formed in the groove forming member, and the shaft moves relative to the groove as the opening/closing body is opened and closed,
The groove includes an elastically deformable portion that is narrower than the maximum diameter of the shaft and is elastically deformable in a direction of increasing the width of the groove, and the shaft is held by the elasticity of the elastically deformable portion. a holding portion for holding the open/close body in an open state,
The shaft has a shape whose radial dimension changes along the circumferential direction and is provided rotatably,
When the shaft passes through the elastically deforming portion in the process of opening the opening/closing body from the closed state, the radial dimension of the shaft with respect to the width of the groove is set to be equal to or less than the first dimension smaller than the maximum diameter. Equipped with rotation restricting means for restricting rotation of the shaft,
A switchgear characterized by:

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