JP2011158053A - Hinge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hinge having excellent durability capable of closing a second object to be coupled with a first object to be coupled mildly and certainly. <P>SOLUTION: The hinge 100 is equipped with: a case member 110; a rotary member 120 made of resin material coupled with the case member 110 rotatably and having a cam part 121 furnished with a damper hole 121c; a slider 140 which is slidable while it is supported by the case member 110; a spring 150 to energize the slider 140; and a damper pin 160 made of a metal material whose middle part is fitted through the damper hole 121c and two ends are supported by the case member 110, wherein the width of the damper hole 121c in the middle part in the circumferential direction of a rotary pin 130 is made smaller than the outer diameter of the damper pin 160. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

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

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

Such a document pressing plate requires a certain amount of weight in order to bring the document into close contact with the document reading unit. In addition, when an automatic document feeder (ADF) is provided on the original pressure plate, the weight of the original pressure plate further increases.
Therefore, the conventional hinge for connecting the main body of the office equipment and the original pressure plate has a spring interposed between the mounting member fixed to the main body of the office equipment and the support member fixed to the original pressure plate. By supporting the weight of the document crimping plate with the urging force of the spring, the rotation angle (opening / closing angle) of the document crimping plate with respect to the main body of the office equipment is held at an arbitrary angle, and the operator rotates the document crimping plate (as a result) The operation of placing the document on the document reading unit is facilitated. For example, as described in Patent Document 1.

In many of the hinges described above, when the rotation angle of the original cover against the main body of the office equipment is less than a predetermined threshold, the amount of spring compression is the same even if the rotation angle changes so that the amount of spring compression is the same. By devising the shape of the portion (cam), it is possible to drop the document crimping plate onto the upper surface of the main body and completely close the document crimping plate (abut the document crimping plate against the upper surface of the main body).
However, if the weight of the original pressure plate is large, the original pressure plate may fall sharply and collide with the main body of the office device when the rotation angle of the original pressure plate with respect to the main body of the office device falls below a predetermined value. There is.

As a hinge (document crimping plate opening / closing device) that solves such a problem, when a rotation angle of the document crimping plate with respect to the main body of the office equipment is equal to or less than a predetermined angle, a fluid damper acts to act as a document crimping plate. It is known to slow the fall of For example, as described in Patent Document 2.
However, the structure of the fluid damper provided in the hinge described in Patent Document 2 is complicated, has a large number of parts, and is not preferable from the viewpoint of manufacturing cost.

  As hinges that gently drop the original cover without using a fluid damper, the hinges described in Patent Documents 3 to 6 are known.

A hinge (document pressure plate opening / closing device) described in Patent Document 3 is provided with an attachment member attached to the device main body side of an office device, a support member rotatably attached to the attachment member, and supporting the document pressure plate. A slider that is slidably mounted on one of the member and the support member, a cam member that is provided on either the attachment member or the support member and that is in sliding contact with the slider, and presses the slider against the cam member to press the document An elastic member that controls the opening operation of the plate, and either the slider or the cam member is provided with a fitting recess (groove), and the slider or the cam member has an insertion protrusion (projection). A rotation control unit (a portion that contacts while being elastically deformed) is provided in at least one of the fitting concave portion and the insertion convex portion.
When the hinge described in Patent Document 3 is rotated, the fitting recess and the insertion protrusion come into contact with each other while being elastically deformed in the rotation control unit within a range of a certain rotation angle. A frictional force is generated at the contact portion.
This frictional force cancels a part of the torque for rotating the original cover in the direction in which the original cover is closed by its own weight, so that the rotation of the hinge and the drop of the original cover is reduced.

The hinge described in Patent Literature 4 is attached to one side of the main body (office equipment main body) or the swinging body (original pressure plate) and the other side of the main body or the swinging body. A rotating body that is rotatably supported, a press-contact portion that is formed on the rotating body and presses against the side wall and presses the side wall in the direction of the rotation axis of the rotating body, a cam portion that is formed on the rotating body, and a case that is reciprocally movable. A wedge body having an inclined surface that is accommodated and slidably contacts the cam portion; and an elastic member that urges the wedge body accommodated in the case toward the rotating body.
When the hinge described in Patent Document 4 is rotated, the pressure contact portion and the side wall come into contact with each other while being elastically deformed within a certain rotation angle range, and a frictional force is generated at the contact portion between the pressure contact portion and the side wall.
This frictional force cancels a part of the torque that attempts to rotate the swinging body (original pressure bonding plate) in the closing direction by its own weight, so that the rotation of the hinge and eventually the swinging body (original pressure bonding plate) falls. Be gentle.

The hinge described in Patent Document 5 includes a cylindrical case attached to one of a main body (office equipment main body) or a swinging body (original pressure plate) and a side wall end of the case facing the other of the main body or the swinging body. A rotating body that is rotatably supported by the part and has a cam part, a wedge body that is accommodated in a case so as to be reciprocally movable and has a slope that slides into contact with the cam part when the rotating body rotates, and a wedge body that is accommodated in the case An elastic member that urges the rotating body, and a sliding surface that is formed in the wedge body side of the rotating shaft of the rotating body on the inner wall of the case and is concavely curved corresponding to a parallel movement locus of a line segment substantially parallel to the rotating shaft And a sliding contact portion that is formed on the rotating body and that contacts the sliding contact surface when the rotating body rotates.
When the hinge described in Patent Document 5 rotates, the sliding contact portion elastically deforms and contacts the sliding contact surface within a certain rotation angle range, and friction occurs at the contact portion between the sliding contact portion and the sliding contact surface. Force is generated.
This frictional force cancels a part of the torque that attempts to rotate the swinging body (original pressure bonding plate) in the closing direction by its own weight, so that the rotation of the hinge and eventually the swinging body (original pressure bonding plate) falls. Be gentle.

The hinge described in Patent Document 6 is attached to a fixed-side hinge body that has a bearing wall portion having a pair of shaft holes and is attached to a base of a scanner or the like, and an open / close body that is installed to be freely opened and closed in the vertical direction. A movable-side hinge body, a pair of shaft holes and a support shaft that is inserted through the movable-side hinge body and rotatably supports the movable-side hinge body on the fixed-side hinge body, and an inclined surface that contacts the movable-side hinge body are provided at the upper end. And a wedge body that is slidably mounted on the fixed-side hinge body, and a compression coil spring that is embedded in the fixed-side hinge body and biases the wedge body upward.
The movable-side hinge body of the hinge described in Patent Document 6 has a boss portion pivotally mounted around a support shaft and a butt portion that projects from the lower outer periphery of the boss portion and rubs against the inclined surface as the opening and closing body is opened and closed. And an arcuate protrusion that applies rotational torque in the opening direction to the movable hinge.
The upper end edge of the bearing wall portion of the fixed-side hinge body of the hinge described in Patent Document 6 is formed as a convex arc edge centered on the shaft hole, and a small protrusion is provided on a portion of the convex arc edge in the circumferential direction. .
Overhang walls are formed on each outer peripheral side of both axial end surfaces of the boss portion of the hinge described in Patent Document 6.
On the inner surface of the overhanging wall of the hinge described in Patent Document 6, a concave concave arc surface is formed which is formed in a concave arc shape with the center of the shaft hole as the arc center, and rubs against the protrusion as the opening and closing body is opened and closed. Is done.
A raised step portion formed concentrically with the sliding concave arc surface and slightly higher than the sliding concave arc surface is formed at a circumferential intermediate portion of the sliding concave arc surface of the hinge described in Patent Document 6. The
When the hinge described in Patent Document 6 rotates, within a range of a certain rotation angle, the protrusion rides on the protruding step, the protrusion contacts the protruding step while being elastically deformed, and the protrusion and the protruding step. A frictional force is generated at the contact portion.
This frictional force cancels a part of the torque that attempts to rotate the opening / closing body (original pressure bonding plate) in the closing direction by its own weight, so that the rotation of the hinge and eventually the opening / closing body (original pressure bonding plate) falls. Be gentle.

However, in any of the hinges described in Patent Document 3 to Patent Document 6, two members that contact each other are made of a resin material (more specifically, materials having similar physical property values (mechanical properties) contact each other. ).
Therefore, when the force for pressing one of the two members against the other is set large in order to increase the frictional force generated at the contact portion between the two members, the wear at the contact portion between the two members is severe. Therefore, it is difficult to give the hinge sufficient durability.
More specifically, when it is repeated that the hinges described in Patent Document 3 to Patent Document 6 are alternately rotated in the opening direction and the closing direction, the contact portions of the two members are worn and the contact. There is a case where a desired frictional force is not generated in the portion, and the original pressing plate is vigorously dropped toward the main body of the office equipment.

JP 2007-212910 A JP 2006-133532 A JP 2009-71804 A JP 2005-299748 A JP 2004-116208 A JP 2001-98839 A

  The problem to be solved by the present invention is to provide a hinge that can close the second connection object gently and surely with respect to the first connection object and has excellent durability. .

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

That is, in claim 1,
A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
A first wing member fixed to either the first connection object or the second connection object;
It is fixed to either the first connection object or the second connection object, is rotatably connected to the first wing member, has a cam portion, and a damper hole is formed in the cam portion. A portion of the cam portion around at least the damper hole is a second wing member made of a resin material;
A slide member movable in a direction approaching the second wing member and a direction away from the second wing member while being supported by the first wing member;
A direction in which the second connection object opens with respect to the first connection object by urging the slide member in a direction approaching the second wing member and bringing the slide member into contact with the cam portion. An urging member for applying torque to the second wing member so as to rotate
A damper pin member made of a metal material, having a midway portion penetrated into the damper hole, and both end portions supported by the first wing member,
Comprising
The damper hole is
An arc-shaped elongated hole that penetrates the cam portion in the axial direction of the rotation shaft of the second wing member relative to the first wing member and extends in the circumferential direction of the rotation shaft;
The width of the damper hole is
It is smaller than the outer diameter of the damper pin member at a midway portion in the circumferential direction of the rotation shaft.

In claim 2,
A position in the cam portion that is sandwiched between the rotation shaft and the damper hole and corresponding to a portion of the damper hole that has a width smaller than the outer diameter of the damper pin member, or the damper in the cam portion The cam portion is placed at a position on the opposite side of the rotation shaft beyond the hole and corresponding to a portion of the damper hole whose width is smaller than the outer diameter of the damper pin member. A deformation relief hole penetrating in the axial direction is formed,
A portion of the cam portion that is sandwiched between the damper hole and the deformation relief hole is made of a resin material.

In claim 3,
A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
A first wing member fixed to either the first connection object or the second connection object;
It is fixed to either the first connection object or the second connection object, is rotatably connected to the first wing member, has a cam portion, and a damper groove is formed in the cam portion. A portion of the cam portion around at least the damper groove is a second wing member made of a resin material;
A slide member movable in a direction approaching the second wing member and a direction away from the second wing member while being supported by the first wing member;
A direction in which the second connection object opens with respect to the first connection object by urging the slide member in a direction approaching the second wing member and bringing the slide member into contact with the cam portion. An urging member for applying torque to the second wing member so as to rotate
A damper pin member made of a metal material, having one end supported by the first wing member and the other end accommodated in the damper groove;
Comprising
The damper groove is
A groove that opens in a circumferential surface of the cam portion and extends in a circumferential direction of a rotation shaft of the second wing member with respect to the first wing member,
The width of the damper groove is
It is smaller than the outer diameter of the damper pin member at a midway portion in the circumferential direction of the rotation shaft.

In claim 4,
The damper pin member is
Spring pin or slot pin.

In claim 5,
A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
A first wing member fixed to either the first connection object or the second connection object;
The first connection object or the second connection object is fixed to the other, is rotatably connected to the first wing member, has a cam portion, and the cam portion has a damper hole and a damper groove. A portion of the cam portion around the damper hole and a portion around the damper groove is a second wing member made of a resin material,
A slide member movable in a direction approaching the second wing member and a direction away from the second wing member while being supported by the first wing member;
A direction in which the second connection object opens with respect to the first connection object by urging the slide member in a direction approaching the second wing member and bringing the slide member into contact with the cam portion. An urging member for applying torque to the second wing member so as to rotate
A first damper pin member made of a metal material, having a midway portion penetrated into the damper hole, and both end portions supported by the first wing member,
A second damper pin member made of a metal material, having one end supported by the first wing member and the other end accommodated in the damper groove;
Comprising
The damper hole is
An arc-shaped elongated hole that penetrates the cam portion in the axial direction of the rotation shaft of the second wing member relative to the first wing member and extends in the circumferential direction of the rotation shaft;
The width of the damper hole is
Smaller than the outer diameter of the first damper pin member at a midway portion in the circumferential direction of the pivot shaft,
The damper groove is
A groove that opens in a circumferential surface of the cam portion and extends in a circumferential direction of the rotation shaft;
The width of the damper groove is
It is smaller than the outer diameter of the second damper pin member at a midway portion in the circumferential direction of the rotation shaft.

In claim 6,
In the cam portion, a position that is sandwiched between the rotation shaft and the damper hole, and a position corresponding to a portion of the damper hole whose width is smaller than the outer diameter of the first damper pin member, or in the cam portion The cam portion is located at a position on the opposite side of the rotation shaft beyond the damper hole and corresponding to a portion of the damper hole whose width is smaller than the outer diameter of the first damper pin member. A deformation relief hole penetrating in the axial direction of the pivot shaft is formed,
A portion of the cam portion that is sandwiched between the damper hole and the deformation relief hole is made of a resin material.

In claim 7,
The second damper pin member is
Spring pin or slot pin.

  The present invention has an effect that it is possible to close the second connection object gently and surely with respect to the first connection object, and it is excellent in durability.

The right view which shows the multifunctional machine which comprises 1st embodiment of the hinge which concerns on this invention. The perspective view which shows 1st embodiment of the hinge which concerns on this invention. The perspective view which similarly shows 1st embodiment of the hinge which concerns on this invention. The right view which shows 1st embodiment of the hinge which concerns on this invention. FIG. 4 is a right side cross-sectional view showing the first embodiment of the hinge according to the present invention when the rotation angle θ = 0 ° (when the original cover is closed). The perspective view which shows the case member of 1st embodiment of the hinge which concerns on this invention. The perspective view which similarly shows the case member of 1st embodiment of the hinge which concerns on this invention. The perspective view which shows the rotation member of 1st embodiment of the hinge which concerns on this invention. The right side sectional view showing the rotation member of the first embodiment of the hinge according to the present invention. (A) The perspective view which shows 1st embodiment of the hinge concerning this invention, and the rotation pin of 2nd embodiment, (b) The perspective view which shows the damper pin of 1st embodiment of the hinge concerning this invention. The perspective view which shows the slider of 1st embodiment of the hinge which concerns on this invention, and the slider of 2nd embodiment of the hinge which concerns on this invention. FIG. 4 is a right side cross-sectional view showing the first embodiment of the hinge according to the present invention when the rotation angle θ = 60 ° (when the original cover is open). The right side sectional view showing a first embodiment of the hinge concerning the present invention when rotation angle theta = 16 degrees. The right side sectional view showing the first embodiment of the hinge concerning the present invention when rotation angle theta = 8 degrees. The figure which shows the relationship between rotation angle (theta) of the 1st embodiment of the hinge which concerns on this invention, and width W1 ((theta)) of a damper hole. Sectional drawing on the right side which shows another embodiment of the rotation member of 1st embodiment of the hinge which concerns on this invention. Sectional drawing on the right side which shows another embodiment of the damper pin of 1st embodiment of the hinge which concerns on this invention. The right view which shows the multifunctional machine which comprises 2nd embodiment of the hinge which concerns on this invention. The perspective view which shows 2nd embodiment of the hinge which concerns on this invention. The perspective view which similarly shows 2nd embodiment of the hinge which concerns on this invention. The right view which shows 2nd embodiment of the hinge which concerns on this invention. FIG. 6 is a right side cross-sectional view showing a second embodiment of the hinge according to the present invention when the rotation angle θ = 0 ° (when the original cover is closed). The perspective view which shows the case member of 2nd embodiment of the hinge which concerns on this invention. The perspective view which similarly shows the case member of 2nd embodiment of the hinge which concerns on this invention. The perspective view which shows the rotation member of 2nd embodiment of the hinge which concerns on this invention. The expansion | deployment schematic diagram which shows the cam surface and damper groove | channel of 2nd embodiment of the hinge which concerns on this invention. (A) Right side sectional view showing the pin fixing member of the second embodiment of the hinge according to the present invention, (b) Front view showing the pin fixing member of the second embodiment of the hinge according to the present invention, (c) The rear view which shows the pin fixing member of 2nd embodiment of the hinge which concerns on invention. The perspective view which shows the damper pin of 2nd embodiment of the hinge which concerns on this invention. FIG. 7 is a right side cross-sectional view showing a second embodiment of the hinge according to the present invention when the rotation angle θ = 60 ° (when the original cover is open). The right side sectional view showing a second embodiment of the hinge concerning the present invention when rotation angle theta = 16 degrees. The right side sectional view showing a second embodiment of the hinge concerning the present invention when rotation angle theta = 8 degrees. The figure which shows the relationship between rotation angle (theta) and damper groove width W2 ((theta)) of 2nd embodiment of the hinge which concerns on this invention. The perspective view which shows another embodiment of the damper pin of 2nd embodiment of the hinge which concerns on this invention.

  Below, the hinge 100 which is 1st embodiment of the hinge based on this invention is demonstrated using FIGS. 1-16.

As shown in FIG. 1, the hinge 100 connects the document crimping plate 13 to the main body 12 of the multifunction machine 11 so that the document crimping plate 13 can rotate.
The multifunction machine 11 is an embodiment of office equipment. The multifunction machine 11 includes a main body 12 and an original cover 13.

The main body 12 is an embodiment of the first connection object according to the present invention.
The main body 12 of this embodiment includes a document reading device, a control device, a printing device, a display device, and an input device.
The document reading apparatus of this embodiment is disposed on the upper surface of the main body 12. The document reading device reads a document placed on the upper surface of the main body 12 (generates image information of the document).
The control device according to the present embodiment controls the operation of each unit of the multifunction peripheral 11, more specifically, the operations of the document reading device, the printing device, and the ADF.
Further, the control device can store the image information generated by the document reading device and the image information acquired through a line (Internet line or the like) connected to the main body 12.
The printing apparatus of this embodiment is disposed below the document reading apparatus. The printing device prints an image on paper based on the image information stored by the control device.
The display device according to the present embodiment includes, for example, a liquid crystal panel, and displays information related to the operation status of the multifunction machine 11.
The input device according to the present embodiment includes, for example, a button and a switch, and is operated when an operator inputs an instruction or the like to the multifunction machine 11. The display device and the input device are disposed at the front end portion of the upper surface of the main body 12.

The original cover 13 is an embodiment of the second connection object according to the present invention.
The document crimping plate 13 presses (crimps) the document placed on the document reading device toward the document reading device, so that the document moves when the document reading device reads the document (relative to the document reading device). Change of the general position).
The document pressing plate of this embodiment includes a document storage tray before reading, an ADF (Auto Document Feeder), and a document storage tray after scanning.
The ADF according to the present embodiment sequentially takes out a plurality of documents stored in a stacked state on a document storage tray before reading one by one and places them at a predetermined reading position on the document reading device. After the reading is completed, the document placed at the reading position is conveyed to the document storage tray after reading.

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

In the present embodiment, “the state where the original cover 13 is closed (with respect to the main body 12)” means that the lower surface of the original cover 13 is in contact with the upper surface of the main body 12, A state in which they are not in contact with the upper surface of the main body 12 but are arranged so as to be substantially parallel to each other at a position close to the upper surface of the main body 12 (see the original pressure plate 13 drawn with a solid line in FIG. 1).
Further, in the “state in which the original cover 13 is open (relative to the main body 12)”, the lower face of the original cover 13 and the upper face ( In the case of this embodiment, in particular, the lower surface front end portion of the original cover 13 and the upper end portion of the upper surface of the main body 12 are separated (see the original cover 13 drawn by a two-dot chain line in FIG. 1).

The hinge 100 according to the present embodiment is used for the purpose of pivotally connecting the document pressing plate 13 to the main body 12 of the multifunction machine 11, but the use of the hinge according to the present invention is not limited to this.
That is, the hinge according to the present invention can be widely applied to "uses for connecting the other member (second connection object) to one member (first connection object) of the two members so as to be openable and closable".
Specific examples of other applications to which the hinge according to the present invention is applied include applications in which a hatch (lid) for exchanging a toner cartridge is connected to the main body of an office device so as to be openable and closable, and a hood can be opened and closed in a car body. Use for connecting to the toilet, use for connecting the toilet seat to the toilet so as to be openable and closable, and the like.

Below, each member which comprises the hinge 100 is demonstrated.
Hereinafter, for the sake of convenience, the vertical direction, the front-rear direction, and the left-right direction of the multi-function device 11 when the hinge 100 is attached to the multi-function device 11 and the original cover 13 is closed with respect to the main body 12 (original The description will be made assuming that the vertical direction, the front-rear direction, and the left-right direction of the multifunction machine 11 when the crimping plate 13 is closed with respect to the main body 12 correspond to the vertical direction, front-rear direction, and left-right direction of the hinge 100, respectively.

  As shown in FIGS. 2 to 5, the hinge 100 includes a case member 110, a rotating member 120, a rotating pin 130, a slider 140, a spring 150, and a damper pin 160.

Hereinafter, the case member 110 will be described with reference to FIGS. 1, 2, 3, 5, 6, and 7.
Case member 110 is an embodiment of the first wing member according to the present invention.
The case member 110 of the present embodiment is formed by appropriately bending a metal plate.
As shown in FIGS. 6 and 7, the case member 110 includes a rear plate 111, a left side plate 112, a right side plate 113, front plates 114L and 114R, bottom plates 115, 116L and 116R, a front upper cover plate 117, a front lower cover plate 118 and Rear upper cover plates 119L and 119R are provided.

As shown in FIG. 6, the rear plate 111 is a plate-like member that forms the rear portion of the case member 110.
The rear plate 111 has a pair of front and rear plate surfaces. The shape of the rear plate 111 is a generally rectangular shape that is long in the vertical direction in the rear view.
A protrusion 111 a is formed in the upper and lower halfway part of the rear plate 111. The protrusion 111a protrudes behind the rear plate 111. In the present embodiment, by pressing the rear plate 111, the middle part of the upper and lower sides of the rear plate 111 is plastically deformed rearward, and the portion plastically deformed rearward is formed as a protrusion 111a.

As shown in FIG. 7, the left side plate 112 is a plate-like member that forms the left side portion of the case member 110.
The left side plate 112 has a pair of left and right plate surfaces. The shape of the left side plate 112 is generally a rectangle that is long in the vertical direction when viewed from the side, but more strictly speaking, the width of the upper half of the left side plate 112 (length in the front-rear direction) is the width of the lower half of the left side plate 112 ( It is slightly larger than the length in the front-rear direction.
The lower half portion and the rear end portion of the left side plate 112 are connected to the left end portion of the rear plate 111. In the present embodiment, the rear plate 111 and the left side plate 112 are formed by bending a single metal plate at a right angle.
A through hole 112 a that penetrates a pair of left and right plate surfaces of the left side plate 112 is formed at a position that becomes an upper end portion and a rear end portion of the left side plate 112.
A through hole 112 b that penetrates a pair of left and right plate surfaces of the left side plate 112 is formed at a position that becomes the upper end portion and the front end portion of the left side plate 112.
A protrusion 112 c is formed in the middle of the left and right plate 112. The protrusion 112c protrudes to the left side of the left side plate 112. In the present embodiment, by pressing the left side plate 112, the middle part of the upper and lower sides of the left side plate 112 is plastically deformed to the left side, and the portion plastically deformed to the left side is formed as a protrusion 112c.

As shown in FIG. 6, the right side plate 113 is a plate-like member that forms the right side portion of the case member 110.
The right side plate 113 has a pair of left and right plate surfaces. The shape of the right side plate 113 is a generally rectangular shape that is long in the vertical direction when viewed from the side. More strictly speaking, the width of the upper half of the right side plate 113 (length in the front-rear direction) It is slightly larger than the length in the front-rear direction.
The lower half portion and the rear end portion of the right side plate 113 are connected to the right end portion of the rear plate 111. In the present embodiment, the rear plate 111 and the right side plate 113 are formed by bending a single metal plate at a right angle.
A through hole 113 a that penetrates the pair of left and right plate surfaces of the right side plate 113 is formed at a position that becomes an upper end portion and a rear end portion of the right side plate 113.
A through hole 113b that penetrates a pair of left and right plate surfaces of the right side plate 113 is formed at a position that becomes an upper end portion and a front end portion of the right side plate 113.
A protrusion 113 c is formed in the middle part of the right side plate 113. The protrusion 113c protrudes to the right side of the right side plate 113. In the present embodiment, by pressing the right side plate 113, the upper and lower middle portions of the right side plate 113 are plastically deformed rightward, and the portion plastically deformed rightward is formed as a protrusion 113c.

As shown in FIG. 7, the front plates 114 </ b> L and 114 </ b> R are plate-like members that form the front portion of the case member 110. The front plates 114L and 114R have a pair of front and rear plate surfaces.
The shape of the front plate 114L is a generally rectangular shape that is long in the vertical direction when viewed from the front. The shape of the front plate 114R is a shape obtained by obliquely cutting out the upper right corner of a rectangle that is long in the vertical direction when viewed from the front.
The left end portion of the front plate 114L is connected to the front end portion of the left plate 112. In the present embodiment, the front plate 114L and the left side plate 112 are formed by bending a single metal plate at a right angle.
The right end portion of the front plate 114R is connected to the front end portion of the right plate 113. In the present embodiment, the front plate 114R and the right side plate 113 are formed by bending a single metal plate at a right angle.
The positions of the front plate 114L and the front plate 114R in the front-rear direction are the same. That is, the rear plate surface of the front plate 114L and the rear plate surface of the front plate 114R are arranged on the same plane.
The right end portion of the front plate 114L and the left end portion of the front plate 114R are separated from each other. That is, a gap is formed between the right end portion of the front plate 114L and the left end portion of the front plate 114R.

  As shown in FIG. 6, the bottom plates 115, 116 </ b> L, and 116 </ b> R are plate-like members that form the bottom (lower end) of the case member 110. The bottom plates 115, 116L, 116R have a pair of upper and lower plate surfaces.

The shape of the bottom plate 115 is generally square when viewed from the bottom. A protrusion 115 a is formed at the rear end of the bottom plate 115. The protrusion 115 a protrudes behind the bottom plate 115. The shape of the protrusion 115a is a generally rectangular shape that is slightly long in the front-rear direction when viewed from the bottom.
The left rear end portion of the bottom plate 115 is connected to the lower left end portion of the rear plate 111, and the right rear end portion of the bottom plate 115 is connected to the right lower end portion of the rear plate 111. In the present embodiment, the bottom plate 115 and the rear plate 111 are formed by cutting a single metal plate and bending it at right angles with the lines passing through both ends of the cut as fold lines. The portion surrounded by the notches and fold lines forms the protrusion 115a.

The shapes of the bottom plates 116L and 116R are generally rectangular shapes that are long in the front-rear direction. The left end portion of the bottom plate 116L is connected to the lower end portion of the left side plate 112, and the right end portion of the bottom plate 116R is connected to the lower end portion of the right side plate 113. In this embodiment, the bottom plate 116L and the left side plate 112 are formed by bending one metal plate at a right angle, and the bottom plate 116R and the right side plate 113 are formed by bending another portion of the metal plate at a right angle.
The positions of the bottom plate 116L and the bottom plate 116R in the vertical direction are the same. That is, the upper plate surface of the bottom plate 116L and the upper plate surface of the bottom plate 116R are arranged on the same plane.
The right end portion of the bottom plate 116L and the left end portion of the bottom plate 116R are separated from each other. That is, a gap is formed between the right end portion of the bottom plate 116L and the left end portion of the bottom plate 116R.

In the present embodiment, the upper plate surface of the bottom plate 116L abuts on the left half of the lower plate surface of the bottom plate 115, and the upper plate surface of the bottom plate 116R is on the right half of the lower plate surface of the bottom plate 115. Abut.
Therefore, when a downward external force is applied to the bottom plate 115 (in this embodiment, the urging force of the spring 150), the bottom plate 115 is not only the rear plate 111 but also the bottom plate 116L and the bottom plate 116R (as a result, the left side plate 112 and the right side plate 113). Is supported by

As shown in FIG. 7, the front upper cover plate 117 is a plate-like member that forms the front upper end of the case member 110. The front upper cover plate 117 covers the front of the cam portion 121 of the rotating member 120 (see FIGS. 2 and 5).
The front upper cover plate 117 has a pair of front and rear plate surfaces. The shape of the front upper cover plate 117 is a generally rectangular shape that is slightly long in the vertical direction when viewed from the front. A right end portion of the front upper cover plate 117 is connected to an upper right end portion of the right side plate 113. In the present embodiment, the front upper cover plate 117 and the right side plate 113 are formed by bending a single metal plate at a right angle. The upper end portion and the lower end portion of the front upper cover plate 117 are bent so as to be slightly inclined toward the rear from the upper and lower middle portions of the front upper cover plate 117.

The front lower cover plate 118 is a plate-like member that forms the front lower end of the case member 110.
The front lower cover plate 118 has a pair of front and rear plate surfaces. The shape of the front lower cover plate 118 is a generally rectangular shape that is long in the left-right direction when viewed from the front. The lower end portion of the front lower cover plate 118 is connected to the front end portion of the bottom plate 115. In the present embodiment, the front lower cover plate 118 and the bottom plate 115 are formed by bending a single metal plate at a right angle.

As shown in FIG. 6, the rear upper cover plates 119 </ b> L and 119 </ b> R are plate-like members that form the rear upper end portion of the case member 110. The rear upper cover plates 119L and 119R cover the rear of the cam portion 121 of the rotating member 120 (see FIGS. 3 and 5).
The rear upper cover plates 119L and 119R have a pair of front and rear plate surfaces. The shape of the rear upper cover plate 119L is a trapezoid whose left side is perpendicular to the left-right direction in back view and whose lower side is longer than the upper side. The shape of the rear upper cover plate 119R is a trapezoid whose right side is perpendicular to the left-right direction in back view and whose lower side is longer than the upper side.
The left end portion of the rear upper cover plate 119L is connected to the rear upper end portion of the left plate 112, and the right end portion of the rear upper cover plate 119R is connected to the rear upper end portion of the right plate 113. In the present embodiment, the rear upper cover plate 119L and the left side plate 112 are formed by bending one metal plate at a right angle, and the rear upper cover plate 119R and the right side plate are formed by bending another portion of the metal plate at a right angle. 113 is formed.

6 and 7, the inside of the case member 110, more specifically, the rear plate 111, the left side plate 112, the right side plate 113, the front plates 114L and 114R, the bottom plate 115, the front upper cover plate 117, and the front lower cover plate. A space is formed in a portion surrounded by 118 and the rear upper cover plates 119L and 119R.
A space formed inside the case member 110 opens at the top of the case member 110.

  In the present embodiment, the case member 110 is fixed to the main body 12 by inserting the case member 110 into a rectangular fixing hole (not shown) formed in a rectangular shape in plan view formed in the rear end portion of the upper surface of the main body 12 of the multifunction machine 11 ( (See FIG. 1).

  When the case member 110 is inserted into the fixing hole, the front plate surface of the front plate 114L and the front plate surface of the front plate 114R abut against the inner wall surface of the front side of the fixing hole, and the protrusion 112c is on the left side of the fixing hole. The protrusion 113c contacts the inner wall surface on the right side of the fixing hole, the protrusion 111a contacts the inner wall surface on the rear side of the fixing hole, and the lower plate surface of the bottom plate 116L and the lower side of the bottom plate 116R When the plate surface is in contact with the bottom surface of the fixing hole, the position of the case member 110 and the hinge 100 with respect to the main body 12 is determined.

When the case member 110 is inserted into the fixing hole, the protrusion 115a engages with a “groove extending in the vertical direction” formed in the lower half of the inner wall surface on the rear side of the fixing hole.
With this configuration, when an overload is applied to the hinge 100 (for example, when a thick original is pressed against the upper surface of the main body 12 by the original pressure plate 13), the case member 110 (and hence the hinge 100) with respect to the main body 12 is used. It is possible to avoid the overload by allowing the vertical movement of the hinge 100 and to prevent the hinge 100 (and thus the original cover 13) from falling off the main body 12.

Although the case member 110 of this embodiment is shape | molded by bending a metal plate suitably, the 1st wing member which concerns on this invention is not limited to this.
More specifically, the first wing member is not limited to a single member, and may be a plurality of members (for example, a plurality of members fixed to each other by screws, welding, or the like).
Moreover, the material which comprises a 1st wing member is not limited to a metal material, As long as it can achieve the intensity | strength requested | required of a 1st wing member, you may comprise with another material.
Specific examples of the material constituting the first wing member include a metal material, a resin material, a combination of a metal material and a resin material, and the like.

Below, the rotation member 120 is demonstrated using FIG.1, FIG.8, FIG.9 and FIG.
The rotating member 120 is an embodiment of the second wing member according to the present invention.
The rotating member 120 of this embodiment is manufactured by integrally molding a resin material.
As shown in FIGS. 8 and 9, the rotating member 120 has a cam portion 121 and a mounting portion 122.

  The cam portion 121 is a massive portion that forms the lower half of the rotating member 120. The cam portion 121 has a pair of left and right side surfaces and a cam surface 121a. The cam surface 121 a is a curved surface that forms the front surface, the lower surface, and the rear surface of the cam portion 121.

A through hole 121 b is formed in the rear upper part of the cam portion 121. The through hole 121b penetrates a pair of left and right side surfaces of the cam portion 121. A rotation pin 130 is inserted into the through hole 121b (see FIGS. 9 and 10A).
In the cam portion 121, a damper hole 121c is formed at a position that is substantially forward and downward with respect to the through hole 121b. The damper hole 121c penetrates the cam portion 121, and both end portions of the damper hole 121c open on a pair of left and right side surfaces of the cam portion 121, respectively.
A protrusion 121d is formed on the inner peripheral surface of the damper hole 121c. The protrusion 121d is a protrusion (protrusion) having a shape extending in the penetrating direction of the damper hole 121c (in the present embodiment, the left-right direction).
In the cam portion 121, a deformation relief hole 121e is formed at a position on the opposite side of the through hole 121b (the rotation pin 130) beyond the damper hole 121c. The deformation relief hole 121e passes through a pair of left and right side surfaces of the cam portion 121.
Details of the cam portion 121 (the shapes of the through hole 121b, the damper hole 121c and the deformation relief hole 121e, the relative positional relationship between these holes, and the like) will be described later.

The attachment portion 122 is a plate-like portion that forms the upper half of the rotating member 120.
The attachment portion 122 has a pair of upper and lower plate surfaces. Through holes 122a, 122b, 122c, and 122d are formed in the attachment portion 122.
The through hole 122 a is a hole that penetrates a pair of upper and lower plate surfaces of the attachment portion 122 at the left rear portion of the attachment portion 122. The shape of the through hole 122a is a shape that extends slightly in the left-right direction in plan view.
The through-hole 122 b is a hole that penetrates a pair of upper and lower plate surfaces of the attachment portion 122 at the left front portion of the attachment portion 122. The shape of the through hole 122b is a shape extending in the front-rear direction in plan view.
The through-hole 122 c is a hole that penetrates a pair of upper and lower plate surfaces of the attachment portion 122 at the right rear portion of the attachment portion 122. The shape of the through hole 122c is circular in plan view.
The through hole 122d is a hole that passes through a pair of upper and lower plate surfaces of the attachment portion 122 at the right front portion of the attachment portion 122. The shape of the through hole 122d is a shape extending in the front-rear direction in plan view.

In the present embodiment, screws (not shown) are inserted into the through holes 122a, 122b, 122c, and 122d, and these screws are screw holes (not shown) formed in the rear end portion of the lower surface of the original cover 13 of the multifunction machine 11. ) Are fixed to the original cover 13 (see FIG. 1).
Further, since the through holes 122a, 122b, and 122d are long holes, it is possible to easily finely adjust the position where the original cover 13 is fixed to the rotating member 120.

Below, the rotation pin 130 is demonstrated using (a) of FIG.2, FIG.3, FIG.5, FIG.6, FIG.7, FIG.9 and FIG.
The rotation pin 130 is an embodiment of the rotation shaft according to the present invention.
As shown in FIG. 10A, the rotation pin 130 has a body portion 131 and a head portion 132. The rotation pin 130 of the present embodiment is made of a metal material. More specifically, the rotation pin 130 of this embodiment is manufactured by rolling a stainless steel wire.

The body portion 131 is a substantially cylindrical portion that forms the body of the rotation pin 130. A caulking hole 131 a is formed at one end (tip) of the body portion 131.
The caulking hole 131a is a hole formed in the end surface of one end portion (tip portion) of the body portion 131. By forming the caulking hole 131a, a thin portion (substantially cylindrical portion) is formed at one end portion (tip portion) of the body portion 131.

  The head portion 132 is a substantially disk-shaped portion connected to the other end portion (base end portion) of the body portion 131. The outer diameter (diameter) of the head portion 132 is larger than the outer diameter (diameter) of the body portion 131.

As shown in FIGS. 2, 3, 5, and 9, the body 131 of the rotation pin 130 is inserted into a through hole 112 a (see FIGS. 6 and 7) formed in the left side plate 112 of the case member 110. The through-hole 121b formed in the cam portion 121 of the rotating member 120 is inserted into the through-hole 113a (see FIGS. 6 and 7) formed in the right side plate 113 of the case member 110.
The inner diameter (diameter) of the through hole 121b is slightly smaller than the outer diameter (diameter) of the body portion 131, and the inner diameters (diameters) of the through hole 112a and the through hole 113a are slightly smaller than the outer diameter (diameter) of the body portion 131. Therefore, the rotation pin 130 is fixed to the rotation member 120 so as not to fall off (cannot move in the axial direction) and not relative to the rotation, and is supported by the case member 110 so as to be rotatable.
Accordingly, the rotation member 120 is rotatably connected to the case member 110 by the rotation pin 130, and as a result, the original cover 13 (the lower rear end portion thereof) is connected to the main body 12 (the upper rear end portion thereof) by the hinge 100. It is pivotally connected.

Rotating by caulking (plastically deforming) the thin portion formed at one end (tip) of the body portion 131 so as to push it in the radial direction of the rotation pin 130 (direction perpendicular to the axial direction). The outer diameter (diameter) of one end portion of the pin 130, that is, the crimped portion is larger than the inner diameter (diameter) of the through hole 113a. Further, the outer diameter (diameter) of the head 132 is larger than that of the through hole 112a.
In this manner, the swivel pin 130 can be fixed to the case member 110 so as not to drop off by caulking one end portion (tip portion) of the body portion 131.

In the present embodiment, the rotation pin 130 is separated from the case member 110 and the rotation member 120, but the present invention is not limited to this.
That is, according to the present invention, sufficient strength can be secured and the second wing member according to the present invention can be pivotally connected to the first wing member according to the present invention. The rotating shaft may be integrated with the first wing member or the second wing member according to the present invention (the rotating shaft according to the present invention is formed integrally with the first wing member or the second wing member according to the present invention). May be).

Hereinafter, the slider 140 will be described with reference to FIGS. 5 and 11.
The slider 140 is an embodiment of a slide member according to the present invention.
The slider 140 of this embodiment is manufactured by integrally molding a resin material.
As shown in FIGS. 11A and 11B, the slider 140 is a substantially rectangular parallelepiped member having an upper surface 141, a lower surface 142, a left surface 143, a right surface 144, a front surface 145, and a rear surface 146.
As shown in FIG. 11A, a protrusion 147 is formed on the slider 140.
The protrusion 147 is a protrusion (protrusion) having a shape extending in the left-right direction, and protrudes upward from the front-rear middle part of the upper surface 141.
As shown in FIG. 11B, a spring receiving hole 148 is formed in the slider 140.
The spring receiving hole 148 has an opening on the lower surface 142 and extends in the vertical direction. The shape of the spring receiving hole 148 is circular when viewed from the bottom. The spring receiving hole 148 has an inner peripheral surface and a top surface.
A protrusion 148 a for regulating (positioning) the position of the spring 150 is formed at the center of the top surface of the spring receiving hole 148.

As shown in FIG. 5, the slider 140 is housed inside the case member 110.
When the slider 140 is housed inside the case member 110, the front surface 145 of the slider 140 contacts the rear plate surface of the front plates 114L and 114R, the rear surface 146 contacts the front plate surface of the rear plate 111, The left surface 143 contacts the right plate surface of the left plate 112, and the right surface 144 contacts the left plate surface of the right plate 113.
Therefore, the slider 140 can move (slide) in the vertical direction, but cannot move in the front-rear direction and the left-right direction, and cannot rotate relative to the case member 110.
As described above, the slider 140 accommodated in the case member 110 is supported by the case member 110 while moving in the up and down direction, and thus in the direction approaching the rotating member 120 rotatably connected to the case member 110 and the rotation. It is possible to move in a direction away from the moving member 120.
When the slider 140 is accommodated inside the case member 110, the upper surface 141 and the protrusion 147 of the slider 140 face the rotating member 120 (more specifically, the cam surface 121a of the cam portion 121).

Hereinafter, the spring 150 will be described with reference to FIGS. 1 and 5.
The spring 150 is an embodiment of the biasing member according to the present invention.
The spring 150 of the present embodiment is a metal (made of a metal material) wound spring, and is a compression spring (a spring used in a compressed state).
As shown in FIG. 5, the spring 150 is housed inside the case member 110.
One end (lower end) of the spring 150 housed inside the case member 110 abuts on the upper plate surface of the bottom plate 115, and the other end (upper end) of the spring 150 is inserted into the spring receiving hole 148 of the slider 140. And abuts against the top surface of the spring receiving hole 148.
The spring 150 is attached in a direction in which the slider 140 protrudes from the opening (upper end) of the case member 110, that is, in a direction approaching the rotation member 120 that is rotatably connected to the case member 110 (upward in this embodiment). The projection 147 formed on the upper surface 141 of the slider 140 is brought into contact with the cam surface 121 a of the cam portion 121 of the rotating member 120.
As a result, the urging force of the spring 150 (the force that the spring 150 elastically deformed in the compressing direction tries to return to its original shape) is transmitted to the rotating member 120 through the slider 140, and the rotating member 120 is transmitted to the case member 110. The document pressing plate 13 is urged in a direction to rotate counterclockwise as viewed from the right side, and the document pressing plate 13 is urged in the opening direction with respect to the main body 12 (see FIG. 1).
Thus, the spring 150 applies torque to the rotating member 120 so that the original cover 13 rotates in the opening direction with respect to the main body 12.

Hereinafter, the damper pin 160 will be described with reference to FIGS. 2, 3, 5, 6, 7, 9, and 10 (b).
The damper pin 160 is an embodiment of a damper pin member (first damper pin member) according to the present invention.
As shown in FIG. 10B, the damper pin 160 has a body portion 161 and a head portion 162. The damper pin 160 of the present embodiment is made of a metal material. More specifically, the damper pin 160 of the present embodiment is manufactured by rolling a stainless steel wire.

The body portion 161 is a substantially cylindrical portion that forms the body of the damper pin 160. A caulking hole 161 a is formed in one end portion (tip portion) of the body portion 161.
The caulking hole 161a is a hole formed in the end surface of one end portion (tip portion) of the body portion 161. By forming the caulking hole 161a, a thin portion (substantially cylindrical portion) is formed at one end portion (tip portion) of the body portion 161.

  The head 162 is a substantially disk-shaped portion connected to the other end (base end) of the body portion 161. The outer diameter (diameter) of the head portion 162 is larger than the outer diameter (diameter) of the body portion 161.

  As shown in FIGS. 2, 3, 5, and 9, the body portion 161 of the damper pin 160 is inserted into a through hole 112 b (see FIGS. 6 and 7) formed in the left side plate 112 of the case member 110. It penetrates through a damper hole 121c formed in the cam portion 121 of the rotating member 120, and penetrates through a through hole 113b (see FIGS. 6 and 7) formed in the right side plate 113 of the case member 110.

The damper pin 160 is squeezed (plastically deformed) so that a thin portion formed at one end portion (tip portion) of the body portion 161 is pushed and expanded in the radial direction (direction perpendicular to the axial direction) of the damper pin 160. The outer diameter (diameter) of the one end portion, that is, the crimped portion is larger than the inner diameter (diameter) of the through hole 113b. The outer diameter (diameter) of the head 162 is larger than that of the through hole 112b.
In this manner, the damper pin 160 can be fixed to the case member 110 so as not to fall off by crimping one end portion (tip portion) of the body portion 161.

In the present embodiment, the middle portion of the body portion 161 of the damper pin 160 is inserted into the damper hole 121c, and both end portions (base end portion and front end portion) of the body portion 161 are supported by the case member 110.
With this configuration, a force in a direction perpendicular to the axis of the damper pin 160 (generated at a contact portion between an outer peripheral surface of the body portion 161 and an inner peripheral surface of the damper hole 121c of the cam portion 121, which will be described in detail later). Even when a force caused by a frictional force acting on the damper pin 160 is applied to the damper pin 160, the damper pin 160 is reliably supported by the case member 110, and as a result, variation in the position or posture of the damper pin 160 relative to the case member 110 can be prevented. Is possible.

In the present embodiment, the metal material constituting the damper pin 160 is stainless steel, but the metal material constituting the damper pin member (first damper pin member) according to the present invention is not limited to this, and some strength ( Any other metal material may be used as long as the metal material has a strength capable of functioning as a damper pin member (first damper pin member).
Examples of the metal material constituting the damper pin member (first damper pin member) according to the present invention include various steel materials (soft iron, stainless steel, etc.), aluminum, aluminum alloy, titanium, titanium alloy, copper, and copper alloy. Etc.

Hereinafter, the behavior of the hinge 100 when the original cover 13 is closed will be described with reference to FIGS. 1, 5, 9, and 12 to 15.
More specifically, in the following, the rotation angle θ of the document crimping plate 13 will be described first, then the “free stop region” and the “falling region” will be described, and then the rotation angle θ of the document crimping plate 13, The relationship between the damper hole 121c and the damper pin 160 will be described.

(About the rotation angle θ of the original cover 13)
As shown in FIG. 5, in this embodiment, the rotation angle θ of the original cover 13 when the original cover 13 is completely closed, that is, when the lower surface of the original cover 13 is in contact with the upper surface of the main body 12. When the rotation angle θ of the document crimping plate 13 with respect to the main body 12 is set to “0 °” and the document crimping plate 13 is rotated in the opening direction, the rotation angle θ increases (the rotation angle θ becomes positive). The rotation angle θ of the original cover 13 is defined as follows.
In the present embodiment, the rotation angle θ of the document pressing plate 13 when the document pressing plate 13 is completely opened (when the rotation angle θ is maximized) is “60 °”.

(About “Free Stop Area” and “Fall Area”)
As shown in FIG. 1, in this embodiment, when the rotation angle θ of the original cover 13 is 12 ° or more (θ ≧ 12 °), the original cover 13 belongs to the “free stop area”, and the original cover is shown in FIG. When the rotation angle θ of 13 is less than 12 ° (0 ° ≦ θ <12 °), the original cover 13 belongs to the “falling region”.

The “free stop area” in the present embodiment includes (A) “rotational force (torque) acting on the rotation member 120 around the rotation pin 130 due to the weight of the original cover 13” and (B) “ This is a region where the rotational force (torque) acting on the rotation member 120 around the rotation pin 130 due to the biasing force of the spring 150 is substantially balanced.
Here, “the“ free stop region ”in the present embodiment is substantially balanced between the rotational force (A) and the rotational force (B)” in the “free stop region” in the present embodiment, (Α) “(A) and (B) where the rotational force is completely balanced (region where (A) − (B) = 0 is satisfied)” as well as (β) “(A ) And (B) ((A) − (B) ≠ 0), and the frictional force generated at the contact portion between the cam surface 121a and the protrusion 147 is the difference. This is because the “region where the offset can be offset” is also included. In addition, the difference between the rotational force of (A) and the rotational force of (B) may be a positive value or a negative value.

When the original cover 13 is in the “free stop region” and the original cover 13 is rotated in the closing direction (the direction in which the rotation angle θ of the original cover 13 is reduced), the rotational force in (A) increases. To do.
This is because the gravity acting on the document crimping plate 13 is divided into components in the radial direction of the rotation pin 130 (direction connecting the front end of the document crimping plate 13 and the rotation pin 130 in a side view) and in the circumferential direction (radial direction in a side view). This is because the component in the circumferential direction, that is, the rotational force (A) increases as the rotation angle θ of the original cover 13 decreases.

On the other hand, when the document pressing plate 13 is rotated in the closing direction while the document pressing plate 13 belongs to the “free stop area”, the rotating member 120 is viewed from the right side of the case member 110 as shown in FIG. The position where the cam surface 121a of the cam portion 121 of the rotating member 120 and the protrusion 147 of the slider 140 abut is changed, and the slider 140 moves downward as compared with the case shown in FIG. ).
When the slider 140 moves downward, the spring 150 is compressed (the entire length of the spring 150 is reduced), the urging force of the spring 150 is increased, and the rotational force of (B) is increased.
As a result, when the document pressing plate 13 belongs to the “free stop region”, the rotational force (A) and the rotational force (B) are balanced even if the rotation angle θ of the document pressing plate 13 changes.
More precisely, when the original pressure plate 13 belongs to the “free stop region”, the rotational force (A) and the rotational force (B) are substantially balanced even if the rotation angle θ of the original pressure plate 13 changes. In this way, the shapes of the rotating member 120 (cam portion 121) and the slider 140 (projection 147) are set in advance.
Therefore, when the operator releases his / her hand from the original cover 13 when the original cover 13 belongs to the “free stop area”, the rotation angle θ of the original cover 13 is maintained.

The “falling region” in the present embodiment is a region where the rotational force (A) is larger than the rotational force (B). More precisely, the “falling region” in this embodiment is “the rotational force of (A) is larger than the rotational force of (B), and the frictional force generated at the contact portion between the cam surface 121a and the protrusion 147 is the same. This is a region where the difference between the rotational force (A) and the rotational force (B) cannot be canceled out.
When the operator releases his / her hand from the original pressure plate 13 when the original pressure plate 13 belongs to the “falling area”, the original pressure plate 13 is subject to its own weight (strictly speaking, the rotational force (A) and the rotational force (B). It rotates in the closing direction by the difference between the force and the force.

In the present embodiment, when the original cover 13 belongs to the “falling region”, the position of the slider 140 relative to the case member 110 does not change even if the rotation angle θ of the original cover 13 changes.
More precisely, when the document pressing plate 13 belongs to the “falling region”, the rotating member 120 (cam Portion 121) and slider 140 (protrusion 147) are preset.
As a result, when the original cover 13 belongs to the “falling region”, the rotational force in (B) is substantially zero, and the rotational force in (A) is greater than the rotational force in (B).

(Relationship between rotation angle θ of original cover 13, damper hole 121 c and damper pin 160)
As shown in FIG. 9, the damper hole 121c is a through hole 121b, more specifically, a rotation pin 130 (a rotation axis of the rotation member 120 with respect to the case member 110) inserted into the through hole 121b. Is a long arc-shaped hole extending in the circumferential direction of the rotation axis of the original cover 13.
In other words, the damper hole 121c has a shape extending along the circumference centering on the axis of the rotation pin 130 when viewed from the axial direction of the rotation pin 130.
The radius of the circumference is the same as the distance from the axis (center line) of the rotation pin 130 supported by the case member 110 to the axis (center line) of the damper pin 160.
Therefore, when the rotating member 120 rotates with respect to the case member 110, the damper pin 160 inserted in the damper hole 121c passes through the inside of the damper hole 121c in the longitudinal direction of the damper hole 121c (of the rotating pin 130). Move in the circumferential direction.

As shown in FIG. 9, in this embodiment, the width W1 (θ) of the damper hole 121c is “the axial direction of the rotation pin 130 when the rotation angle of the original cover 13 is θ (the axis of the damper pin 160). The distance between two points where the straight line 1 ”passing through the axis (center line) of the rotation pin 130 and the axis (center line) of the damper pin 160 intersects with the“ inner peripheral surface of the damper hole 121c ”as viewed from the direction). Is defined as
Accordingly, the width W1 (θ) of the damper hole 121c is expressed as a function of the rotation angle θ of the original cover 13 (see FIG. 15).

As shown in FIGS. 9 and 15, when 16 ° ≦ θ ≦ 60 ° (when the rotating member 120 rotates relative to the case member 110 from the position shown in FIG. 12 to the position shown in FIG. 13). The width W1 (θ) of the damper hole 121c is slightly larger than the outer diameter (diameter) Rdp1 of the damper pin 160, and the outer peripheral surface of the body portion 161 of the damper pin 160 does not contact the inner peripheral surface of the damper hole 121c.
More precisely, the outer peripheral surface of the body portion 161 of the damper pin 160 may contact the inner peripheral surface of the damper hole 121c depending on the dimensional error of each member constituting the hinge 100. However, the damper pin 160 and the rotating member It does not contact so strongly that a large frictional force is generated during 120.
Therefore, when 16 ° ≦ θ ≦ 60 °, the rotation force of the rotation member 120 is such that the damper pin 160 hinders the operation of the rotation member 120 (the rotation of the rotation member 120 relative to the case member 110). It does not act on.

As shown in FIGS. 9 and 15, when 0 ° <θ <16 ° (the rotation member 120 moves from the position shown in FIG. 13 to the position shown in FIG. Since the protrusion 121d is formed on the inner peripheral surface of the damper hole 121c, the width W1 (θ) of the damper hole 121c is smaller than the outer diameter (diameter) Rdp1 of the damper pin 160.
Therefore, as shown in FIG. 14, when 0 ° <θ <16 °, the outer peripheral surface of the body portion 161 of the damper pin 160 abuts on the inner peripheral surface of the damper hole 121c, and the cam portion 121 of the rotating member 120 A portion corresponding to the periphery of the portion of the damper pin 160 that contacts the outer peripheral surface of the body portion 161 (particularly, the cam portion 121 of the rotating member 120 is sandwiched between the damper hole 121c and the deformation relief hole 121e and the periphery of the protrusion 121d. Part) is elastically deformed.
Therefore, when 0 ° <θ <16 °, a frictional force is generated at the contact portion between the outer peripheral surface of the body portion 161 of the damper pin 160 and the inner peripheral surface of the damper hole 121c, and the frictional force is (A). Since a part of the difference between the rotational force of (B) and the rotational force of (B) is offset, the speed at which the original cover 13 is rotated in the closing direction becomes slow (relaxed).
As a result, the original cover 13 is softly abutted on the upper surface of the main body 12 (without a strong impact), so that the original cover 13 is gently and reliably closed.

In this embodiment, when the rotation angle θ is 0 ° or a value very close to 0 ° (the position at which the rotation member 120 is the position shown in FIG. 5 with respect to the case member 110 or in the vicinity thereof). The shape of the damper hole 121c (the shape of the protrusion 121d) is determined so that the width W1 (θ) of the damper hole 121c is slightly larger than the outer diameter (diameter) Rdp1 of the damper pin 160. .
With this configuration, when the original pressure plate 13 is rotated in the closing direction, the original pressure plate 13 is brought into contact with the main body 12 from a position where the lower surface of the original pressure plate 13 is in contact with the upper surface of the main body 12. Therefore, the lower surface of the document crimping plate 13 can be reliably brought into contact with the upper surface of the main body 12 without causing a strong impact, and as a result, the document crimping plate 13 can be reliably closed with respect to the main body 12.

As described above, the hinge 100 is
A hinge for connecting the document pressing plate 13 to the main body 12 of the multifunction machine 11 so as to be openable and closable;
A case member 110 fixed to the main body 12;
Fixed to the original pressure plate 13 and rotatably connected to the case member 110, having a cam portion 121, a damper hole 121 c formed in the cam portion 121, a rotating member 120 made of a resin material,
A slider 140 that is supported by the case member 110 and is movable in a direction approaching the rotation member 120 and a direction away from the rotation member 120;
By urging the slider 140 in a direction approaching the rotating member 120 and bringing the slider 140 into contact with the cam portion 121, the rotating member is rotated so that the document pressing plate 13 is rotated in the opening direction with respect to the main body 12. A spring 150 for applying torque to 120;
A damper pin 160 made of a metal material, with a midway portion penetrating into the damper hole 121c and having both end portions supported by the case member 110,
Comprising
The damper hole 121c is
An arc-shaped long hole that penetrates the cam portion 121 in the axial direction of the rotation pin 130 (the rotation axis of the original cover 13 with respect to the main body 12) and extends in the circumferential direction of the rotation pin 130;
The width W1 (θ) of the damper hole 121c is
A part (protrusion 121d) that faces the outer peripheral surface of the damper pin 160 when the rotation pin 130 is in the circumferential direction, more specifically, just before the original cover 13 is closed (0 ° <θ <16 °). Is smaller than the outer diameter Rdp1 of the damper pin 160.
With this configuration, it is possible to close the original cover 13 with respect to the main body 12 gently and reliably.

In the present embodiment, the rotation member 120 is a resin material among the rotation member 120 and the damper pin 160, which are two members that generate a frictional force for gently closing the document pressing plate 13 with respect to the main body 12. The damper pin 160 is made of a metal material.
By configuring in this way, (i) both the rotating member 120 and the damper pin 160 are made of a metal material, and (ii) both the rotating member 120 and the damper pin 160 are made of a resin material, that is, physical properties. Compared to the case where materials having similar values (mechanical properties) contact each other, it is possible to suppress wear of a portion where the rotating member 120 and the damper pin 160 contact each other.
As a result, the durability of the hinge 100 can be improved (the hinge 100 is excellent in durability). Along with this, it is possible to suppress the generation of sound (noise) from the contact portion between the outer peripheral surface of the body portion 161 of the damper pin 160 and the inner peripheral surface of the damper hole 121c.

If (i) both the rotating member 120 and the damper pin 160 are made of a resin material, in order to prevent the damper pin 160 from being damaged, this embodiment (the rotating member 120 is made of a resin material and the damper pin 160 is used). The outer diameter of the damper pin 160 must be set larger than that of a case where the damper pin 160 is made of a metal material.
Therefore, in the case of (i), depending on the shape (size) of the cam portion 121 (when the cam portion 121 is small), the damper is secured while ensuring the strength required for the rotating member 120 as a structure. In some cases, it may be difficult to form the cam portion 121 with the damper hole 121c capable of penetrating the pin 160 and generating a desired frictional force when contacting the outer peripheral surface of the damper pin 160.

In the present embodiment, the damper pin 160 is inserted into a damper hole 121c that penetrates the cam portion 121 in the axial direction of the rotating shaft of the rotating member 120 (the axial direction of the rotating pin 130).
Therefore, when the outer peripheral surface of the damper pin 160 comes into contact with the inner peripheral surface of the damper hole 121c, the area of the contact portion between the outer peripheral surface of the damper pin 160 and the inner peripheral surface of the damper hole 121c is “rotation” of the cam portion 121. It is proportional to the “thickness of the rotation axis of the member 120 in the axial direction”.
The biasing force of the spring 150 transmitted to the cam portion 121 via the slider 140 is for canceling out the torque for rotating the original cover 13 due to the weight of the original cover 13. The urging force of the spring 150 may be set to a considerably large value.
The “thickness of the rotating member 120 in the axial direction of the rotating shaft” of the cam portion 121 is originally set to a somewhat large value so that the cam portion 121 is not damaged by the urging force of the spring 150.
Therefore, the cam portion 121 is in contact with the outer peripheral surface of the damper pin 160 without setting the “thickness in the axial direction of the rotating shaft of the rotating member 120” to a value larger than the thickness required for the structure. Sometimes, it is possible to generate a desired frictional force, which contributes to downsizing (inhibition of upsizing) of the cam portion 121, and consequently the hinge 100.

The hinge 100 of the present embodiment is superior to Patent Document 4, Patent Document 5, and Patent Document 6 from the viewpoint of miniaturization (suppression of enlargement).
In the case of Patent Document 4, in order to increase the frictional force between the pressure contact portion and the side wall, the side wall must be thickened, and thus the enlargement of the hinge in the axial direction is inevitable.
In the case of Patent Document 5, since the sliding contact portion formed on the rotating body protrudes in the axial direction of the cam portion of the rotating body, an increase in the size of the hinge rotating shaft in the axial direction is inevitable.
In the case of Patent Document 6, since the overhanging wall formed on the boss portion of the movable-side hinge body projects in the axial direction of the pivot shaft of the hinge, an increase in the size of the hinge pivot shaft in the axial direction is inevitable. .

  In the present embodiment, the width W1 (θ) of the damper hole 121c is 0 ° <θ <16 °, and the portion facing the outer peripheral surface of the damper pin 160 (the portion where the protrusion 121d is formed) is outside the damper pin 160. Although smaller than the diameter Rdp1, the present invention is not limited to this. For example, by changing the shape of the protrusion 121d and the position where the protrusion 121d is formed, the damper pin at the portion facing the outer peripheral surface of the damper pin 160 when the width W1 (θ) of the damper hole 121c is 5 ° <θ <10 °. It may be smaller than the outer diameter Rdp1 of 160.

Thus, in which part of the damper hole the “part where the width of the damper hole is smaller than the outer diameter of the damper pin member” is arranged, in other words, the rotation angle of the second wing member relative to the first wing member (first In what range the degree of opening of the second connection object relative to one connection object) should be a frictional force generated between the outer peripheral surface of the damper pin member and the inner peripheral surface of the damper hole. It is desirable that the hinges according to the invention are appropriately selected according to the use (the shape, weight, etc. of the first connection object and the second connection object).
In addition, from the viewpoint of gently and surely closing the second connection object with respect to the first connection object, “the portion where the width of the damper hole is smaller than the outer diameter of the damper pin member” It is desirable that the inner peripheral surface of the damper hole be disposed in a portion as close as possible to the portion facing the damper pin member when the two connection objects are closed with respect to the first connection object.
In other words, when the second connection object is close to the first connection object (when the rotation angle of the second wing member is close to zero), the outer peripheral surface of the damper pin member and the damper hole It is desirable to arrange “a portion where the width of the damper hole is smaller than the outer diameter of the damper pin member” at a predetermined position of the damper hole so that a frictional force is generated between the inner peripheral surface and the inner peripheral surface.

In the present embodiment, the entire rotation member 120 is made of a resin material, but the present invention is not limited to this.
That is, at least “the portion that is elastically deformed by the contact between the inner peripheral surface of the damper hole formed in the cam portion and the damper pin member” in the cam portion of the second wing member of the present invention is made of a resin material. If it is made of a resin material, it is possible to generate a frictional force at the portion where the inner peripheral surface of the damper hole and the damper pin member abut, so that at least the periphery of the damper hole in the cam portion. It suffices if the portion is made of a resin material (if it is made of a resin material).

The resin material constituting the rotating member 120 of this embodiment is polyacetal (Polyacetal / Polyoxymethylene; POM), but the resin material constituting the portion around the damper hole in the cam portion according to the present invention is limited to this. Resin that can be elastically deformed when the inner peripheral surface of the damper hole and the damper pin member come into contact with each other and generate a frictional force at the contact portion between the inner peripheral surface of the damper hole and the damper pin member Any other resin material may be used as long as it is a material.
From the viewpoint of further suppressing the wear of the damper pin member and the cam portion by applying a lubricant such as grease to the gap between the outer peripheral surface of the damper pin member and the inner peripheral surface of the damper hole, the damper hole of the cam portion It is desirable to select “resin material that does not deteriorate due to reaction with components contained in the adhered lubricant” as the resin material that constitutes the portion surrounding the.
Other examples of the resin material constituting the portion around the damper hole in the cam portion according to the present invention include polyamide (PA), polybutylene terephthalate (PBT), polyphenylene sulfide (PPS). ) And the like.

As shown in FIG. 9, in this embodiment, the cam portion 121 is located on the opposite side of the rotation pin 130 (the rotation axis (rotation center) of the rotation member 120) beyond the damper hole 121c. In the hole 121c, a deformation relief hole 121e is formed at a position corresponding to a portion whose width is smaller than the outer diameter Rdp1 of the damper pin 160 (a portion where the protrusion 121d is formed).
This configuration has the following advantages.
That is, a portion of the cam portion 121 sandwiched between the damper hole 121c and the deformation relief hole 121e, particularly a portion where the width of the damper hole 121c is smaller than the outer diameter Rdp1 of the damper pin 160 (a portion where the protrusion 121d is formed). The corresponding portion is a portion that is elastically deformed when the outer peripheral surface of the body portion 161 of the damper pin 160 comes into contact with the inner peripheral surface of the damper hole 121c.
Therefore, by adjusting the thickness of the portion, the force required for elastic deformation of the portion is generated at the contact portion between the outer peripheral surface of the body portion 161 of the damper pin 160 and the inner peripheral surface of the damper hole 121c. It is possible to adjust the magnitude of the frictional force.
Note that a portion of the cam portion 121 sandwiched between the damper hole 121c and the deformation relief hole 121e is preferably made of a resin material from the viewpoint of enabling elastic deformation.

In the present embodiment, the position where the deformation relief hole 121e is formed is a position on the cam portion 121 that exceeds the damper hole 121c and is opposite to the rotation pin 130, but the present invention is not limited to this.
For example, as shown in FIG. 16, the cam portion 121 is located between the rotation pin 130 (the rotation axis (rotation center) of the rotation member 120) and the damper hole 121c, and the width of the damper hole 121c is the damper. The deformation relief hole 121g may be formed at a position corresponding to a portion (a portion where the projection 121f is formed) smaller than the outer diameter Rdp1 of the pin 160.

  In the present embodiment, the deformation relief hole 121e penetrates the cam portion 121 in the axial direction of the rotation pin 130 (the rotation axis of the document crimping plate 13 with respect to the main body 12) and the circumferential direction of the rotation pin 130, like the damper hole 121c. However, the deformation relief hole according to the present invention is not limited to this, and may have other shapes (for example, a circle, an ellipse, a polygon, etc.). Further, the number of deformation relief holes according to the present invention is not limited to one and may be plural.

In this embodiment, the outer peripheral surface of the damper pin 160 abuts on the inner peripheral surface of the damper hole 121c, so that a frictional force is generated at the contact portion between the outer peripheral surface of the damper pin 160 and the inner peripheral surface of the damper hole 121c. However, the present invention is not limited to this.
For example, as shown in FIG. 17, the spring pin 165 may be inserted into the body portion 161 of the damper pin 160, and the “damper pin 160 with the spring pin 165 inserted” may be inserted into the damper hole 121c.
The spring pin 165 of this embodiment is a so-called “spring pin”, and is manufactured by bending a plate of a stainless steel plate.
As shown in FIG. 17, the spring pin 165 is a substantially cylindrical member having an outer peripheral surface 165a and an inner peripheral surface 165b. A spring groove 165 c is formed in the spring pin 165.
The spring groove 165c formed in the spring pin 165 communicates the outer peripheral surface 165a and the inner peripheral surface 165b of the spring pin 165, and the spring groove 165c is cut from one end surface to the other end surface of the spring pin 165.
The spring pin 165 can be elastically deformed in the radial direction (direction perpendicular to the axial direction) of the spring pin 165 by changing the width of the spring groove 165c.

In the embodiment shown in FIG. 17, the width W1 (θ) of the damper hole 121c is larger than the outer diameter (diameter) Rdp1 ′ of the damper pin 160 regardless of the value of the rotation angle θ (W1 (θ)> Rdp1 ′). .
Further, the inner diameter Rspi of the spring pin 165 is larger than the outer diameter Rdp1 ′ of the damper pin 160 (body part 161) (inner diameter Rspi> Rdp1 ′).
Further, when 0 ° <θ <16 °, the width W1 (θ) of the damper hole 121c is smaller than the outer diameter Rspo of the spring pin 165 (W1 (θ) <Rspo; 0 ° <θ <16 °).
Therefore, when 0 ° <θ <16 °, the outer peripheral surface 165a of the spring pin 165 penetrating the body portion 161 of the damper pin 160 contacts the inner peripheral surface of the damper hole 121c, and the spring pin 165 and the rotation A portion of the cam portion 121 of the moving member 120 that corresponds to the periphery of the portion that contacts the outer peripheral surface 165a of the spring pin 165 (particularly, the cam portion 121 of the rotating member 120 is sandwiched between the damper hole 121c and the deformation relief hole 121e. And the portion around the projection 121d) is elastically deformed.
Therefore, when 0 ° <θ <16 °, a frictional force is applied to the contact portion between the outer peripheral surface 165a of the spring pin 165 and the inner peripheral surface of the damper hole 121c, which is inserted through the body portion 161 of the damper pin 160. The generated frictional force cancels a part of the difference between the rotational force of (A) and the rotational force of (B), so that the speed at which the document pressing plate 13 rotates in the closing direction becomes slow (relaxed). ).
As a result, the original cover 13 is softly abutted on the upper surface of the main body 12 (without a strong impact), so that the original cover 13 is gently and reliably closed.

  When the spring pin 165 is inserted into the damper pin 160 as shown in FIG. 17, not only the portion corresponding to the periphery of the portion of the cam portion 121 of the rotating member 120 that abuts on the outer peripheral surface 165 a of the spring pin 165, but also the spring Since the pin 165 is also elastically deformed, it is difficult to set a large amount of deformation when the portion corresponding to the periphery of the portion of the cam portion 121 that contacts the outer peripheral surface 165a of the spring pin 165 is elastically deformed (for example, rotation The outer peripheral surface 165a of the spring pin 165 is used even when a hard resin material (having a relatively large elastic constant) must be used as the material constituting the rotating member 120 in order to achieve the strength of the moving member 120 as a structure. It is possible to generate a frictional force while suppressing the wear of the portion where the contact hole and the inner peripheral surface of the damper hole 121c abut. A.

In this embodiment, the case member 110 is fixed to the main body 12 of the multifunction machine 11 and the rotating member 120 is fixed to the original cover 13. However, the present invention is not limited to this.
For example, depending on the shapes of the main body 12 and the original cover 13, the case member 110 may be fixed to the original cover 13 and the rotating member 120 may be fixed to the main body 12.
Thus, the first wing member according to the present invention is fixed to either the first connection object or the second connection object, and the second wing member according to the present invention is the first connection object or the second connection. What is necessary is just to be fixed to either one of the objects (the first connection object or the second connection object in which the first wing member is not fixed).

In this embodiment, the rotation angle θ1 when shifting from the “free stop area” to the “falling area” is changed from a state where the outer peripheral surface of the damper pin member and the inner peripheral surface of the damper hole are not in contact with each other. A rotation angle θ2 when the frictional force starts to be generated at the contact portion between the outer peripheral surface of the damper pin member and the inner peripheral surface of the damper hole when the second connection object is rotated in the closing direction; However, the relationship of θ1 <θ2 is established (in this embodiment, θ1 = 12 ° and θ2 = 16 °), but the present invention is not limited to this.
That is, if it is possible to close the second connection object gently and surely with respect to the first connection object, θ1 = θ2 or θ1> θ2 may be satisfied. That is, it is desirable that the magnitude relationship between θ1 and θ2 is appropriately selected according to the use of the hinge according to the present invention.

  Below, hinge 200 which is 2nd embodiment of the hinge based on this invention is demonstrated using FIGS. 18-32.

As shown in FIG. 18, the hinge 200 connects the document crimping plate 23 to the main body 22 of the multi-function device 21 so that the document crimping plate 23 can rotate.
The multifunction machine 21 is an embodiment of office equipment. The multi-function device 21 includes a main body 22 and a document pressing plate 23.
The main body 22 is an embodiment of the first connection object according to the present invention.
The original cover 23 is an embodiment of the second connection object according to the present invention.
Since the basic structure of the main body 22 and the original pressure plate 23 according to the present embodiment, and thus the basic structure of the multi-function machine 21, is the same as the basic structure of the multi-function machine 11 shown in FIG. Detailed descriptions of the main body 22 and the original cover 23 are omitted.

Below, each member which comprises the hinge 200 is demonstrated.
In the following, for convenience, the hinge 200 is attached to the multifunction device 21 and the vertical direction, the front-rear direction, and the left-right direction of the multifunction device 21 when the document crimping plate 23 is closed with respect to the main body 22 (documents). The description will be made assuming that the vertical direction, the front-rear direction, and the left-right direction of the multi-function device 21 when the crimping plate 23 is closed with respect to the main body 22 correspond to the vertical direction, front-rear direction, and left-right direction of the hinge 200, respectively.

  As shown in FIGS. 19 to 22, the hinge 200 includes a case member 210, a rotating member 220, a rotating pin 230, a slider 240, a spring 250, a pin fixing member 271 and a damper pin 272.

Hereinafter, the case member 210 will be described with reference to FIGS. 18, 23, and 24.
Case member 210 is an embodiment of the first wing member according to the present invention.
The case member 210 of this embodiment is formed by appropriately bending a metal plate.
23 and 24, the case member 210 includes a rear plate 211, a left side plate 212, a right side plate 213, front plates 214L and 214R, bottom plates 215 and 216L and 216R, a front upper cover plate 217, a front lower cover plate 218, and Rear upper cover plates 219L and 219R are provided.
A protrusion 211a is formed on the rear plate 211. The left side plate 212 has a through hole 212a, a through hole 212b, and a protrusion 212c. The right side plate 213 is formed with a through hole 213a, a through hole 213b, and a protrusion 213c. A protrusion 215 a is formed on the bottom plate 215.
In the present embodiment, the case member 210 is fixed to the main body 22 by inserting the case member 210 into a fixing hole (not shown) having a rectangular shape in plan view formed at the rear end portion of the upper surface of the main body 22 of the multifunction device 21 ( (See FIG. 18).

  Hereinafter, for the sake of convenience, the case member 210 will be described while referring to differences from the case member 110 shown in FIGS. 6 and 7, and detailed description of points that are common to the case member 110 will be omitted.

  As shown in FIG. 24, a screw hole 217 a is formed in the front upper cover plate 217 of the case member 210. The screw hole 217a is a hole penetrating a pair of front and rear plate surfaces of the front upper cover plate 217, and a female screw is formed on the inner peripheral surface of the screw hole 217a.

Below, the rotation member 220 is demonstrated using FIG.18, FIG.25 and FIG.26.
The rotating member 220 is an embodiment of the second wing member according to the present invention.
The rotating member 220 of this embodiment is manufactured by integrally molding a resin material.
As shown in FIG. 25, the rotating member 220 has a cam portion 221 and a mounting portion 222.
The cam portion 221 has a pair of left and right side surfaces and a cam surface 221a. The cam surface 221a is an embodiment of the peripheral surface of the cam portion according to the present invention. A through hole 221 b is formed in the cam portion 221. Through holes 222a, 222b, 222c, and 222d are formed in the attachment portion 222.
In the present embodiment, screws (not shown) are inserted into the through holes 222a, 222b, 222c, and 222d, and these screws are screw holes (not shown) formed in the rear end portion of the lower surface of the original cover 23 of the multifunction machine 21. ) Are fixed to the original cover 23 (see FIG. 18).

  Hereinafter, for the sake of convenience, the rotating member 220 will be described with respect to differences from the rotating member 120 shown in FIGS. 8 and 9, and detailed description of points that are common to the rotating member 120 will be omitted.

As shown in FIG. 25B and FIG. 26, a damper groove 221 c is formed in the cam portion 221 of the rotating member 220. The damper groove 221c is a groove extending in the circumferential direction of a rotation pin 230 (a rotation axis of the rotation member 220 with respect to the case member 210, and thus a rotation axis of the document crimping plate 23 with respect to the main body 22) formed in the cam portion 221. And opens in the cam surface 221a.
The damper groove 221c has a pair of left and right inner wall surfaces and a bottom surface connecting the pair of inner wall surfaces.
Of the pair of left and right inner wall surfaces of the damper groove 221c, protrusions 221d and 221d are formed in the middle portion in the circumferential direction of the rotation pin 230.

Below, the rotation pin 230 is demonstrated using (a) of FIG. 10, FIG. 19, FIG. 20, and FIG.
The rotation pin 230 is an embodiment of the rotation shaft according to the present invention.
As shown in FIG. 10A, the rotation pin 230 has a body portion 231 and a head portion 232.
The rotation pin 230 of the present embodiment is made of a metal material. More specifically, the rotation pin 230 of the present embodiment is manufactured by rolling a stainless steel wire. A caulking hole 231 a is formed in the body portion 231.
As shown in FIGS. 19, 20, and 22, the rotation member 220 is rotatably connected to the case member 210 by a rotation pin 230. The main body 22 (upper end of the upper surface thereof) is rotatably connected.
Since the basic structure of the rotation pin 230 of this embodiment is the same as the basic structure of the rotation pin 130 shown in FIG. 10A, detailed description of the rotation pin 230 is omitted.

Hereinafter, the slider 240 will be described with reference to FIGS. 11 and 22.
The slider 240 is an embodiment of the slide member according to the present invention.
The slider 240 of this embodiment is manufactured by integrally molding a resin material.
As shown in FIG. 11, the slider 240 is a substantially rectangular parallelepiped member having an upper surface 241, a lower surface 242, a left surface 243, a right surface 244, a front surface 245 and a rear surface 246. A protrusion 247 and a spring receiving hole 248 are formed on the slider 240, and a protrusion 248 a is formed on the top surface of the spring receiving hole 248.
As shown in FIG. 22, the slider 240 is housed inside the case member 210.
The slider 240 accommodated in the case member 210 is supported by the case member 210 and is moved in the up and down direction, and in the direction approaching the rotation member 220 rotatably connected to the case member 210 and from the rotation member 220. It is possible to move in the direction of separation.
When the slider 240 is accommodated in the case member 210, the upper surface 241 and the protrusion 247 of the slider 240 face the rotating member 220 (more specifically, the cam surface 221a of the cam portion 221).

Hereinafter, the spring 250 will be described with reference to FIGS. 18 and 22.
The spring 250 is an embodiment of the biasing member according to the present invention.
The spring 250 of the present embodiment is a metal (made of a metal material) wound spring, and is a compression spring (a spring used in a compressed state).
As shown in FIG. 22, the spring 250 is housed inside the case member 210.
One end (lower end) of the spring 250 accommodated in the case member 210 is in contact with the upper plate surface of the bottom plate 215, and the other end (upper end) of the spring 250 is inserted into the spring receiving hole 248 of the slider 240. And contacts the top surface of the spring receiving hole 248.
The spring 250 is attached in a direction in which the slider 240 protrudes from the opening (upper end) of the case member 210, that is, in a direction approaching the rotation member 220 that is rotatably connected to the case member 210 (upward in this embodiment). The projection 247 formed on the upper surface 241 of the slider 240 is brought into contact with the cam surface 221 a of the cam portion 221 of the rotating member 220.
As a result, the urging force of the spring 250 (the force that the spring 250 elastically deformed in the compression direction tries to return to its original shape) is transmitted to the rotating member 220 through the slider 240, and the rotating member 220 is transmitted to the case member 210. The original pressure plate 23 is biased in a direction to open counterclockwise with respect to the main body 22 (see FIG. 18).
As described above, the spring 250 applies torque to the rotating member 220 so that the original cover 23 rotates in the opening direction with respect to the main body 22.

Hereinafter, the pin fixing member 271 will be described with reference to FIGS. 22, 24, and 27.
As shown in FIG. 27A, the pin fixing member 271 has a head portion 271a, a flange portion 271b, and a body portion 271c, and has a shape in which these are sequentially laminated. The pin fixing member 271 of this embodiment is made of a metal material.
The head portion 271 a is a hexagonal column-shaped portion that forms the head portion of the pin fixing member 271. By fitting a tool (a spectacle wrench, a torque wrench, etc.) to the head 271a, the operator can rotate the pin fixing member 271 around the center line of the pin fixing member 271.
The collar part 271b is a disk-shaped part connected to the head part 271a.
The body portion 271c is a cylindrical portion that forms the body of the pin fixing member 271 and is continuous with the flange portion 271b. A male screw 271d is formed on the outer peripheral surface of the body portion 271c. A pin fixing hole 271e is formed in the body portion 271c. The pin fixing hole 271e is a hole opened in the rear end surface of the body portion 271c.

As shown in FIGS. 22 and 24, the body portion 271c of the pin fixing member 271 is screwed into a screw hole 217a formed in the front upper cover plate 217 of the case member 210 (tightened with a tool), thereby pin fixing member 271. Is fixed to the case member 210.
As shown in FIG. 22, when the pin fixing member 271 is fixed to the case member 210, the rear end surface of the body portion 271 c, and thus the pin fixing hole 271 e, of the rotating member 220 that is rotatably connected to the case member 210. It faces the cam surface 221a of the cam portion 221, more specifically, the damper groove 221c formed in the cam surface 221a.

Below, the damper pin 272 is demonstrated using FIG. 22 and FIG.
The damper pin 272 is an embodiment of a damper pin member (second damper pin member) according to the present invention.
The damper pin 272 of the present embodiment is a so-called “spring pin” and is manufactured by bending a plate of a stainless steel plate.
As shown in FIG. 28, the damper pin 272 is a member having an outer peripheral surface 272a and an inner peripheral surface 272b and a substantially cylindrical shape (the outer shape is generally a columnar shape). A spring groove 272 c is formed in the damper pin 272.
The spring groove 272 c communicates with the outer peripheral surface 272 a and the inner peripheral surface 272 b of the damper pin 272, and the spring groove 272 c is cut from one end surface of the damper pin 272 to the other end surface.
The damper pin 272 can be elastically deformed in the radial direction (direction perpendicular to the axial direction) of the damper pin 272 by changing the width of the spring groove 272c.

As shown in FIG. 22, one end portion (front end portion) of the damper pin 272 is fitted into the pin fixing hole 271 e of the pin fixing member 271 fixed to the case member 210.
When one end (front end) of the damper pin 272 is fitted into the pin fixing hole 271e of the pin fixing member 271 fixed to the case member 210, the other end (rear end) of the damper pin 272 is the damper. It is accommodated in the groove 221c.
In the present embodiment, when one end (front end) of the damper pin 272 is fitted in the pin fixing hole 271e of the pin fixing member 271 fixed to the case member 210, the other end (rear side) of the damper pin 272 is provided. The length of the damper pin 272 in the axial direction is determined so that the end portion does not come into contact with the bottom surface of the damper groove 221c.

One end portion (front end portion) of the damper pin 272 is fitted in the pin fixing hole 271e, so that the damper pin 272 is supported by the case member 210 (via the pin fixing member 271).
As a result, an external force in a direction perpendicular to the axis of the damper pin 272 (in this embodiment, a frictional force generated at a contact portion between the outer peripheral surface 272a of the damper pin 272 and the pair of left and right inner wall surfaces of the damper groove 221c). Even if it acts on the damper pin 272, the damper pin 272 does not fall out of the pin fixing hole 271e.

Hereinafter, the behavior of the hinge 200 when the original cover 23 is closed will be described with reference to FIGS. 18, 22, 26, and 29 to 32.
More specifically, hereinafter, the rotation angle θ of the document crimping plate 23 will be described first, then the “free stop region” and the “falling region” will be described, and then the rotation angle θ of the document crimping plate 23, The relationship between the damper groove 221c and the damper pin 272 will be described.

(Regarding the rotation angle θ of the original cover 23)
As shown in FIG. 22, in this embodiment, the rotation angle θ of the original cover 23 when the original cover 23 is completely closed, that is, when the lower surface of the original cover 23 is in contact with the upper surface of the main body 22. When the rotation angle θ of the document crimping plate 23 with respect to the main body 22 is set to “0 °” and the document crimping plate 23 rotates in the opening direction, the rotation angle θ increases (the rotation angle θ becomes positive). The rotation angle θ of the original cover 23 is defined as follows.
In the present embodiment, the rotation angle θ of the original cover 23 when the original cover 23 is completely opened (when the rotation angle θ is maximized) is “60 °”.

(About “Free Stop Area” and “Fall Area”)
As shown in FIG. 18, in this embodiment, when the rotation angle θ of the document crimping plate 23 is 12 ° or more (θ ≧ 12 °), the document crimping plate 23 belongs to the “free stop region”, and the document crimping plate. 23 is less than 12 ° (0 ° ≦ θ <12 °), the original cover 23 belongs to the “falling region”.
The “free stop area” and the “fall area” in the present embodiment are the same as the “free stop area” and the “fall area” in the hinge 100 shown in FIG. 1 to FIG.

(Relationship between rotation angle θ of original cover 23, damper groove 221c, and damper pin 272)
As shown in FIGS. 22, 26, and 29 to 31, when the rotating member 220 rotates with respect to the case member 210, the other end (rear end) of the damper pin 260 becomes the damper groove 221c. It moves relative to the rotating member 220 (cam portion 221) along the damper groove 221c while maintaining the housed state.

As shown in FIG. 26, in this embodiment, the width W2 (θ) of the damper groove 221c is “a damper pin of a pair of left and right inner wall surfaces of the damper groove 221c when the rotation angle of the original cover 23 is θ. The distance between the portions corresponding to (opposed to) the other end portion (rear end portion) of 272 (distance in the axial direction of the rotation pin 230) ”is defined.
Accordingly, the width W2 (θ) of the damper groove 221c is expressed as a function of the rotation angle θ of the original cover 23 (see FIG. 32).

As shown in FIGS. 26 and 32, when 16 ° ≦ θ ≦ 60 ° (when the rotating member 220 rotates with respect to the case member 210 from the position shown in FIG. 29 to the position shown in FIG. 30). The width W2 (θ) of the damper groove 221c is slightly larger than the outer diameter (diameter) Rdp2 of the damper pin 272, and the other end portion of the outer peripheral surface 272a of the damper pin 272 does not contact the inner peripheral surface of the damper groove 221c. .
More precisely, the other end portion of the outer peripheral surface 272a of the damper pin 272 may contact the inner peripheral surface of the damper groove 221c depending on the dimensional error of each member constituting the hinge 200. The members 220 do not abut so strongly that a large frictional force is generated.
Therefore, when 16 ° ≦ θ ≦ 60 °, the rotation force of the rotation member 220 is such that the damper pin 27 hinders the operation of the rotation member 220 (the rotation of the rotation member 220 relative to the case member 210). It does not act on.

26 and FIG. 32, when 0 ° <θ <16 ° (from the position shown in FIG. 30 to the position shown in FIG. 22 from the position shown in FIG. Since the protrusions 221d and 221d are formed on the pair of left and right inner wall surfaces of the damper groove 221c, the width W2 (θ) of the damper groove 221c is larger than the outer diameter (diameter) Rdp2 of the damper pin 272. Becomes smaller.
Therefore, when 0 ° <θ <16 °, the other end portion of the outer peripheral surface 272a of the damper pin 272 contacts the pair of left and right inner wall surfaces of the damper groove 221c, and the other end portion of the damper pin 272 and the rotating member 220 are in contact. The portion corresponding to the periphery of the portion of the cam portion 221 that contacts the other end of the outer peripheral surface 272a of the damper pin 272 is elastically deformed.
Therefore, when 0 ° <θ <16 °, a frictional force is generated at the contact portion between the other end of the outer peripheral surface 272a of the damper pin 272 and the pair of left and right inner wall surfaces of the damper groove 221c. “Rotation force (torque) acting on the rotation member 220 around the rotation pin 230 due to the weight of the original cover 23” and “Rotation around the rotation pin 230 due to the biasing force of the spring 250” Since a part of the difference from the “rotational force (torque) acting on the moving member 220” is canceled out, the speed at which the original cover 23 is rotated in the closing direction becomes slow (relaxed).
As a result, the original cover 23 is softly abutted on the upper surface of the main body 22 (without a strong impact), so that the original cover 23 is gently and reliably closed.

In this embodiment, when the rotation angle θ is 0 ° or a value very close to 0 ° (the rotation member 220 is located at the position shown in FIG. The shape of the damper groove 221c (the shape of the protrusion 221d) is determined so that the width W2 (θ) of the damper groove 221c is slightly larger than the outer diameter (diameter) Rdp2 of the damper pin 272. .
With this configuration, when the original cover 23 is rotated in the closing direction, the original cover 23 is brought into contact with the main body 22 from a position where the lower surface of the original cover 23 is in contact with the upper surface of the main body 22. Therefore, the lower surface of the document crimping plate 23 is reliably brought into contact with the upper surface of the main body 22 without causing a strong impact, and as a result, the document crimping plate 23 can be reliably closed with respect to the main body 22.

As described above, the hinge 200 is
A hinge for connecting the document crimping plate 23 to the main body 22 of the multifunction machine 21 so as to be openable and closable;
A case member 210 fixed to the main body 22;
Fixed to the document pressure plate 23, rotatably connected to the case member 210, and having a cam portion 221, a damper groove 221c formed in the cam portion 221, and a rotating member 220 made of a resin material;
A slider 140 that is supported by the case member 110 and is movable in a direction approaching the rotation member 120 and a direction away from the rotation member 120;
By urging the slider 240 in a direction approaching the rotation member 220 and bringing the slider 240 into contact with the cam portion 221, the rotation member so that the document pressing plate 23 rotates in the opening direction with respect to the main body 22. A spring 250 for applying torque to 220;
A damper pin 272 made of a metal material, having one end supported by the case member 210 (via the pin fixing member 271) and the other end accommodated in the damper groove 221c;
Comprising
The damper groove 221c is
A groove that opens in the circumferential surface of the cam portion 221 (cam surface 221a in the case of the present embodiment) and extends in the circumferential direction of the rotation pin 230 (the rotation axis of the document crimping plate 23 with respect to the main body 22).
The width W2 (θ) of the damper groove 221c is
A midway portion in the circumferential direction of the rotation pin 230, more specifically, a portion facing the other end portion of the outer peripheral surface 272a of the damper pin 272 when the original cover 23 is close (0 ° <θ <16 °) ( The portion where the protrusions 221d and 221d are formed) is smaller than the outer diameter Rdp2 of the damper pin 272.
With this configuration, it is possible to close the original cover 23 relative to the main body 22 gently and reliably.

In the present embodiment, the rotation member 220 is a resin material among the rotation member 220 and the damper pin 272 that are two members that generate a frictional force for gently closing the document pressing plate 23 with respect to the main body 22. The damper pin 272 is made of a metal material.
With this configuration, (i) both the rotating member 220 and the damper pin 272 are made of a metal material, and (ii) both the rotating member 220 and the damper pin 272 are made of a resin material, that is, physical properties. Compared to the case where materials having similar values (mechanical properties) contact each other, it is possible to suppress wear of a portion where the rotating member 220 and the damper pin 272 contact each other.
As a result, the durability of the hinge 200 can be improved (the hinge 200 is excellent in durability). Along with this, it is possible to suppress the generation of sound (noise) from the contact portion between the other end of the outer peripheral surface 272a of the damper pin 272 and the pair of left and right inner wall surfaces of the damper groove 221c. .

  In the present embodiment, when the width W2 (θ) of the damper groove 221c is 0 ° <θ <16 °, the portion facing the other end of the outer peripheral surface 272a of the damper pin 272 (the portion where the protrusions 221d and 221d are formed) ) Is smaller than the outer diameter Rdp2 of the damper pin 272, but the present invention is not limited to this. For example, the other end portion of the outer peripheral surface 272a of the damper pin 272 is obtained when the width W2 (θ) of the damper groove 221c is 5 ° <θ <10 ° by changing the shape of the protrusions 221d and 221d and the position where they are formed. It may be made smaller than the outer diameter Rdp2 of the damper pin 272 in the part opposite to.

In the present embodiment, the entire rotation member 220 is made of a resin material, but the present invention is not limited to this.
That is, at least “the portion that is elastically deformed by the contact between the pair of inner wall surfaces of the damper groove formed in the cam portion and the damper pin member” in the cam portion of the second wing member of the present invention is made of a resin material. If this is the case (if it is made of a resin material), it is possible to generate a frictional force at the portion where the pair of inner peripheral surfaces of the damper groove abut against the damper pin member. It suffices if the surrounding portion is made of a resin material (if it is made of a resin material).

The resin material constituting the rotating member 220 of this embodiment is polyacetal (Polyacetal / Polyoxymethylene; POM), but the resin material constituting the portion around the damper hole in the cam portion according to the present invention is limited to this. Otherwise, it is elastically deformed when the pair of inner wall surfaces of the damper groove comes into contact with the damper pin member, and it is possible to generate a frictional force at the contact portion between the pair of inner wall surfaces of the damper groove and the damper pin member. Other resin materials may be used as long as they are resin materials.
From the viewpoint of further suppressing the wear of the damper pin member and the cam portion by applying a lubricant such as grease to the gap between the outer peripheral surface of the damper pin member and the pair of inner wall surfaces of the damper groove, the damper of the cam portion It is desirable to select “resin material that does not deteriorate by reacting with components contained in the adhered lubricant” as the resin material constituting the portion around the groove.
Other examples of the resin material constituting the portion around the damper groove in the cam portion according to the present invention include polyamide, polybutylene terephthalate, polyphenylene sulfide, and the like.

Further, in the present embodiment, when the other end portion of the outer peripheral surface 272a of the damper pin 272 contacts the pair of left and right inner wall surfaces of the damper groove 221c, only the portion around the pair of left and right inner wall surfaces in the cam portion 221 is used. In addition, the other end of the damper pin 272 is also elastically deformed.
With this configuration, when it is difficult to set a large amount of deformation when the portion around the pair of left and right inner wall surfaces of the cam portion 221 is elastically deformed (for example, as a structure of the rotating member 220 The other end of the outer peripheral surface 272a of the damper pin 272 and the damper groove, even if a hard (relatively large elastic constant) resin material is used as the material constituting the rotating member 220 to achieve the above strength It is possible to generate a frictional force while suppressing wear at a portion where the pair of left and right inner wall surfaces of 221c abut.

In the present embodiment, the damper pin 272 is supported by the case member 210 via the pin fixing member 271. The pin fixing member 271 is screwed into a screw hole 217 a formed in the front upper cover plate 217 of the case member 210. The screw hole 217a passes through the front upper cover plate 217 in the front-rear direction (a direction approaching the cam portion 221 and a direction away from the cam portion 221 of the rotating member 220 rotatably connected to the case member 210).
This configuration has the following advantages.
When the pin fixing member 271 is rotated around an axis in the front-rear direction, the damper pin 272 having one end fitted in the pin fixing member 271, and eventually the pin fixing hole 271e of the pin fixing member 271, is in the front-rear direction (case member 210 Of the rotating member 220 that is rotatably connected to the cam member 221 and in the direction of moving away from the cam member 221, the damper pin 272 is accommodated in the damper groove 221c. It is possible to change the length of the part.
By changing the length of the portion of the other end portion of the damper pin 272 that is accommodated in the damper groove 221c, the other end portion of the outer peripheral surface 272a of the damper pin 272 and the pair of left and right inner wall surfaces of the damper groove 221c are contacted. It is possible to change (adjust) the area of the contact portion, and thus the frictional force generated in the portion.

The damper pin 272 of the present embodiment is a so-called spring pin, but the damper pin member (second damper pin member) according to the present invention is not limited to this.
For example, a damper pin 282 shown in FIG. 33 may be used instead of the damper pin 272 of the present embodiment.

The damper pin 282 shown in FIG. 33 is a so-called “slip pin”.
The damper pin 282 is made of stainless steel and is a generally cylindrical member having an outer peripheral surface 282a and a pair of end surfaces 282b and 282c.
A slit 282d is formed in the damper pin 282. The slot 282d is a groove having a shape that is cut down in the axial direction of the damper pin 282 from the end face 282c to the midway part of the damper pin 282, and has a pair of inner wall surfaces and a bottom surface that connects these inner wall surfaces.
By forming the slit groove 282d, the rear end portion of the damper pin 282 (the portion from the end surface 282c to the front and rear midway portion of the damper pin 282 and divided into the left and right by the slit groove 282d) is slipped. It is possible to elastically deform so as to change the width of the dividing groove 282d.
The front end portion of the damper pin 282 (the end portion having the end surface 282b) is fitted into the pin fixing hole 271e of the pin fixing member 271 fixed to the case member 210, and the rear end portion of the damper pin 282 is inserted into the damper groove 221c. By accommodating, when the rear end portion (the other end portion) of the outer peripheral surface 282a of the damper pin 282 comes into contact with the pair of left and right inner wall surfaces of the damper groove 221c, the other end portion of the damper pin 282 is elastically deformed. A frictional force can be generated at the contact portion between the rear end portion (the other end portion) of the outer peripheral surface 282a of the pin 282 and the pair of left and right inner wall surfaces of the damper groove 221c.
From the viewpoint of effectively elastically deforming the damper pin 282, the damper pin 282 rotates with a pair of inner wall surfaces of the sliding groove 282d formed in the rear end portion of the damper pin 282 accommodated in the damper groove 221c. It is desirable that the pins 230 be arranged so as to be perpendicular to the axial direction of the pins 230.

The damper pin 272 of this embodiment and the damper pin 282 which is another embodiment thereof are both made of stainless steel, but the damper pin member (second damper pin member) according to the present invention is not limited to this, and the damper pin The elastic change is possible when the member (second damper pin member) and the pair of inner wall surfaces of the damper groove come into contact with each other, and the contact between the damper pin member (second damper pin member) and the pair of inner wall surfaces of the damper groove Other metal materials may be used as long as frictional force can be generated at the contact portion.
Examples of the metal material constituting the damper pin member (second damper pin member) according to the present invention include various steel materials (soft iron, stainless steel, etc.), aluminum, aluminum alloy, titanium, titanium alloy, copper, and copper alloy. Etc.

In the present embodiment, the damper groove 221c opens on the cam surface 221a of the cam portion 221, but the present invention is not limited to this.
That is, the “peripheral surface of the cam portion” according to the present invention is “a cam surface (a surface represented as a straight locus substantially parallel to the rotation axis among the surfaces of the cam portion, and is in contact with the slide member”. In addition to “surface”, it may be “a surface represented as a straight locus substantially parallel to the rotation axis among the surfaces of the cam portion and not in contact with the slide member”.

In this embodiment, the case member 210 is fixed to the main body 22 of the multi-function device 21 and the rotating member 220 is fixed to the document pressing plate 23. However, the present invention is not limited to this.
For example, depending on the shapes of the main body 22 and the original cover 23, the case member 210 may be fixed to the original cover 23 and the rotating member 220 may be fixed to the main body 22.

The hinge 100 which is the first embodiment of the hinge according to the present invention includes “a rotating member 120 having a cam portion 121 in which a damper hole 121c is formed” and “a damper pin 160 penetrating the damper hole 121c”. The hinge 200 according to the second embodiment of the hinge according to the present invention includes a “rotating member 220 having a cam portion 221 in which a damper groove 221c is formed” and a “damper pin 272 in which the other end portion is accommodated in the damper groove 221c. However, the present invention is not limited to this.
That is, the hinge according to the present invention has the characteristics of the first embodiment and the second embodiment of the hinge according to the present invention (“second wing member having a cam portion in which a damper hole and a damper groove are formed”, “A first damper pin member penetrating through the damper hole” and “a second damper pin member whose other end is accommodated in the damper groove” may be used.

11 MFPs (office equipment)
12 Main body (first connection object)
13 Document pressure plate (second connection object)
100 Hinge (first embodiment)
110 Case member (first wing member)
120 Rotating member (second wing member)
121 Cam part 121c Damper hole 130 Rotating pin (Rotating shaft)
140 Slider (slide member)
150 Spring (biasing member)
160 damper pin ((first) damper pin member)

Claims (7)

A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
A first wing member fixed to either the first connection object or the second connection object;
It is fixed to either the first connection object or the second connection object, is rotatably connected to the first wing member, has a cam portion, and a damper hole is formed in the cam portion. A portion of the cam portion around at least the damper hole is a second wing member made of a resin material;
A slide member movable in a direction approaching the second wing member and a direction away from the second wing member while being supported by the first wing member;
A direction in which the second connection object opens with respect to the first connection object by urging the slide member in a direction approaching the second wing member and bringing the slide member into contact with the cam portion. An urging member for applying torque to the second wing member so as to rotate
A damper pin member made of a metal material, having a midway portion penetrated into the damper hole, and both end portions supported by the first wing member,
Comprising
The damper hole is
An arc-shaped slot extending through the cam portion in the axial direction of the rotation axis of the second wing member relative to the first wing member and extending in the circumferential direction of the rotation shaft;
The width of the damper hole is
Smaller than the outer diameter of the damper pin member in the midway portion in the circumferential direction of the pivot shaft,
Hinge. A position in the cam portion that is sandwiched between the rotation shaft and the damper hole and corresponding to a portion of the damper hole that has a width smaller than the outer diameter of the damper pin member, or the damper in the cam portion The cam portion is placed at a position on the opposite side of the rotation shaft beyond the hole and corresponding to a portion of the damper hole whose width is smaller than the outer diameter of the damper pin member. A deformation relief hole penetrating in the axial direction is formed,
Of the cam portion, the portion sandwiched between the damper hole and the deformation relief hole is made of a resin material.
The hinge according to claim 1. A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
A first wing member fixed to either the first connection object or the second connection object;
It is fixed to either the first connection object or the second connection object, is rotatably connected to the first wing member, has a cam portion, and a damper groove is formed in the cam portion. A portion of the cam portion around at least the damper groove is a second wing member made of a resin material;
A slide member movable in a direction approaching the second wing member and a direction away from the second wing member while being supported by the first wing member;
A direction in which the second connection object opens with respect to the first connection object by urging the slide member in a direction approaching the second wing member and bringing the slide member into contact with the cam portion. An urging member for applying torque to the second wing member so as to rotate
A damper pin member made of a metal material, having one end supported by the first wing member and the other end accommodated in the damper groove;
Comprising
The damper groove is
A groove that opens in a circumferential surface of the cam portion and extends in a circumferential direction of a rotation shaft of the second wing member with respect to the first wing member,
The width of the damper groove is
Smaller than the outer diameter of the damper pin member in the midway portion in the circumferential direction of the pivot shaft,
Hinge. The damper pin member is
A spring pin or a sliding pin,
The hinge according to claim 3. A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
A first wing member fixed to either the first connection object or the second connection object;
The first connection object or the second connection object is fixed to the other, is rotatably connected to the first wing member, has a cam portion, and the cam portion has a damper hole and a damper groove. A portion of the cam portion around the damper hole and a portion around the damper groove is a second wing member made of a resin material,
A slide member movable in a direction approaching the second wing member and a direction away from the second wing member while being supported by the first wing member;
A direction in which the second connection object opens with respect to the first connection object by urging the slide member in a direction approaching the second wing member and bringing the slide member into contact with the cam portion. An urging member for applying torque to the second wing member so as to rotate
A first damper pin member made of a metal material, having a midway portion penetrated into the damper hole, and both end portions supported by the first wing member,
A second damper pin member made of a metal material, having one end supported by the first wing member and the other end accommodated in the damper groove;
Comprising
The damper hole is
An arc-shaped slot extending through the cam portion in the axial direction of the rotation axis of the second wing member relative to the first wing member and extending in the circumferential direction of the rotation shaft;
The width of the damper hole is
Smaller than the outer diameter of the first damper pin member at a midway portion in the circumferential direction of the pivot shaft,
The damper groove is
A groove that opens in a circumferential surface of the cam portion and extends in a circumferential direction of the rotation shaft;
The width of the damper groove is
Smaller than the outer diameter of the second damper pin member at a midway portion in the circumferential direction of the pivot shaft,
Hinge. In the cam portion, a position that is sandwiched between the rotation shaft and the damper hole, and a position corresponding to a portion of the damper hole whose width is smaller than the outer diameter of the first damper pin member, or in the cam portion The cam portion is located at a position on the opposite side of the rotation shaft beyond the damper hole and corresponding to a portion of the damper hole whose width is smaller than the outer diameter of the first damper pin member. A deformation relief hole penetrating in the axial direction of the pivot shaft is formed,
Of the cam portion, the portion sandwiched between the damper hole and the deformation relief hole is made of a resin material.
The hinge according to claim 5. The second damper pin member is
A spring pin or a sliding pin,
The hinge according to claim 5 or 6.

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