WO2011065360A1 - Hinge - Google Patents

Abstract

Disclosed is a hinge which makes it possible to gently and reliably close a second linked object with respect to a first linked object. A hinge (100) is provided with: a case member (110) which is fixed to a main body corresponding to the first linked object; a pivoting member (120) which is fixed to a document pressing plate corresponding to the second linked object and is also pivotably linked to the case member (110); a first slider (140) which is slidably supported by the case member (110); a first spring (150) for urging the first slider (140); a second slider (160) which is slidably supported by the case member (110); and a second spring (170) for urging the second slider (160). A first cam part (121b) corresponding to the first slider (140) and a second cam part (121c) corresponding to the second slider (160) are formed on the pivoting member (120), and grease is provided in the gap between the second slider (160) and the case member (110).

Description

Hinge

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. More specifically, the present invention relates to a technique for gradually and reliably closing a second connection object with respect to the first connection object.

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 an attachment member fixed to the main body of the office equipment and a support member fixed to the original pressure plate. By supporting the weight of the document crimping plate with the biasing 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 maintained 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, it is as described in Patent Document 1 shown below.

In many of the hinges described above, when the 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 threshold value, 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 completely close the original cover (contact the original cover with the upper surface of the main body).
However, if the weight of the original pressure plate is large, the original pressure plate may drop sharply and collide with the main body of the office device when the rotation angle of the original pressure plate relative to the main body of the office device falls below a predetermined value. There is.

As a hinge (document crimping plate opening and closing device) that solves such problems, the document crimping plate is actuated by the fluid damper acting when the rotation angle of the document crimping plate with respect to the main body of the office equipment becomes a predetermined angle or less. It is known to slow down the fall of For example, it is as described in Patent Document 2 shown below.
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 a hinge (document pressure plate opening / closing device) that gently drops the document pressure plate when the rotation angle of the document pressure plate relative to the main body of the office equipment is equal to or less than a predetermined angle without using the fluid damper as described above, A hinge described in Patent Document 3 is known.
The hinge described in Patent Document 3 has an attachment member fixed to the main body of the office equipment, a support member rotatably connected to the attachment member and fixed to the original pressure plate of the office equipment, and one end supported A spring fixed to the member, and a slider fixed to the other end of the spring and slidably supported by the support member, and abutting a cam provided on the attachment member. Convex ridges and grooves are alternately formed on the facing portions, and ridges and grooves are alternately formed on the support member facing the slider, and the ridges formed on the slider are accommodated in the grooves formed on the support member. Then, the ridges formed on the support member are accommodated in the grooves formed on the slider, and the gap between the ridges and the grooves is filled with grease, so that the original crimping plate is dropped using the viscous resistance of the grease. The to slow.

However, the hinge described in Patent Document 3 has zero or very small slider movement (sliding amount) with respect to the support member when the rotation angle of the original pressure plate relative to the main body of the office equipment is equal to or smaller than a predetermined angle. For this reason, it is difficult to effectively use the viscous resistance of the grease in order to moderate the fall of the original cover.
JP 2007-212910 A JP 2006-133532 A JP 2003-295355 A

The present invention has been made in view of the situation as described above, and provides a hinge capable of gently and surely closing a second connection target with respect to the first connection target.

The problems to be solved by the present invention are as described above. Next, means for solving the 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 storage chamber having a first opening and a second storage chamber having a second opening are formed, and a first wing member fixed to one of the first connection object and the second connection object;
A second wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first wing member;
A first slide received in the first storage chamber and movable in a direction protruding from the first opening and a direction of immersing in the first storage chamber while contacting the inner peripheral surface of the first storage chamber Members,
A first biasing member housed in the first housing chamber and biasing the first slide member in a direction protruding from the first opening;
A second slide that is accommodated in the second accommodation chamber and is movable in a direction protruding from the second opening and a direction of immersing in the second accommodation chamber while abutting the inner peripheral surface of the second accommodation chamber. Members,
A second biasing member housed in the second housing chamber and biasing the second slide member in a direction protruding from the second opening;
Comprising
The second wing member is formed with a first cam portion that contacts the first slide member and a second cam portion that contacts the second slide member,
It is a hinge in which a viscous body is arrange | positioned in the clearance gap between said 2nd slide member and the internal peripheral surface of said 2nd storage chamber.

In claim 2,
When the second connection object rotates within the fall region, the movement amount of the second slide member relative to the first wing member per rotation angle is the rotation of the first slide member relative to the first wing member. It is larger than the amount of movement per angle.

In claim 3,
The first opening and the second opening are arranged side by side in the circumferential direction of the rotation axis of the second wing member with respect to the first wing member,
The first cam portion and the second cam portion are arranged side by side in the circumferential direction of the rotation shaft.

In claim 4,
The first opening and the second opening are arranged side by side in the axial direction of the rotation axis of the second wing member with respect to the first wing member,
The first cam portion and the second cam portion are arranged side by side in the axial direction of the rotation shaft.

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 formed with a main accommodating chamber having a main opening and fixed to one of the first connection object and the second connection object;
A second wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first wing member;
A sub-accommodating chamber having a sub-opening is formed, is accommodated in the main accommodating chamber, and enters the main accommodating chamber in a direction protruding from the main opening while abutting the inner peripheral surface of the main accommodating chamber. A first slide member movable in a direction;
A first biasing member housed in the main housing chamber and biasing the first slide member in a direction protruding from the main opening;
A second slide member accommodated in the sub-accommodating chamber and movable in a direction protruding from the sub-opening and a direction of immersing in the sub-accommodating chamber while being in contact with the inner peripheral surface of the sub-accommodating chamber;
A second biasing member housed in the sub-accommodating chamber and biasing the second slide member in a direction protruding from the sub-opening;
Comprising
The second wing member is formed with a first cam portion that contacts the first slide member and a second cam portion that contacts the second slide member,
A viscous body is disposed in the gap between the second slide member and the inner peripheral surface of the sub-accommodating chamber.

In claim 6,
When the second connection object rotates within the fall region, the amount of movement of the second slide member relative to the first slide member per rotation angle is the rotation of the first slide member relative to the first wing member. It is larger than the amount of movement per angle.

In claim 7,
A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
A first housing member having a first opening is formed, and a first wing member fixed to one of the first connection object and the second connection object;
A second wing member having a second opening is formed, is fixed to the other of the first connection object and the second connection object, and is rotatably connected to the first wing member. When,
A first slide received in the first storage chamber and movable in a direction protruding from the first opening and a direction of immersing in the first storage chamber while contacting the inner peripheral surface of the first storage chamber Members,
A first biasing member housed in the first housing chamber and biasing the first slide member in a direction protruding from the first opening;
A second slide that is accommodated in the second accommodation chamber and is movable in a direction protruding from the second opening and a direction of immersing in the second accommodation chamber while abutting the inner peripheral surface of the second accommodation chamber. Members,
A second biasing member housed in the second housing chamber and biasing the second slide member in a direction protruding from the second opening;
Comprising
The second wing member is formed with a first cam portion that contacts the first slide member,
The first wing member is formed with a second cam portion that contacts the second slide member,
A viscous body is disposed in the gap between the second slide member and the inner peripheral surface of the second storage chamber.

In claim 8,
When the second connection object rotates within the fall region, the amount of movement of the second slide member relative to the second wing member per rotation angle is the rotation of the first slide member relative to the first wing member. It is larger than the amount of movement per angle.

In claim 9,
A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
A main hinge member;
A sub hinge member separate from the main hinge member;
Comprising
The main hinge member is
A first main wing member formed with a first storage chamber having a first opening and fixed to one of the first connection object and the second connection object;
A second main wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first main wing member;
A first slide received in the first storage chamber and movable in a direction protruding from the first opening and a direction of immersing in the first storage chamber while contacting the inner peripheral surface of the first storage chamber Members,
A first biasing member housed in the first housing chamber and biasing the first slide member in a direction protruding from the first opening;
Comprising
The second main wing member is formed with a first cam portion that contacts the first slide member,
The sub hinge member is
A second sub-wing member formed with a second storage chamber having a second opening and fixed to one of the first connection object and the second connection object;
A second sub wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first sub wing member;
A second slide that is accommodated in the second accommodation chamber and is movable in a direction protruding from the second opening and a direction of immersing in the second accommodation chamber while abutting the inner peripheral surface of the second accommodation chamber. Members,
A second biasing member housed in the second housing chamber and biasing the second slide member in a direction protruding from the second opening;
Comprising
The second sub wing member is formed with a second cam portion that contacts the second slide member,
It is a hinge in which a viscous body is arrange | positioned in the clearance gap between said 2nd slide member and the internal peripheral surface of said 2nd storage chamber.

In claim 10,
When the second connection object rotates within the fall region, the amount of movement of the second slide member relative to the first sub wing member per rotation angle is that of the first slide member relative to the first main wing member. It is larger than the movement amount per rotation angle.

In claim 11,
A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
A first storage chamber having a first opening and a second storage chamber having a second opening are formed, and a first wing member fixed to one of the first connection object and the second connection object;
A second wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first wing member;
A first slide received in the first storage chamber and movable in a direction protruding from the first opening and a direction of immersing in the first storage chamber while contacting the inner peripheral surface of the first storage chamber Members,
A first biasing member housed in the first housing chamber and biasing the first slide member in a direction protruding from the first opening;
A second slide that is accommodated in the second accommodation chamber and is movable in a direction protruding from the second opening and a direction of immersing in the second accommodation chamber while abutting the inner peripheral surface of the second accommodation chamber. Members,
A second biasing member housed in the second housing chamber and biasing the second slide member in a direction protruding from the second opening;
Comprising
The second wing member is formed with a first cam portion that contacts the first slide member and a second cam portion that contacts the second slide member,
A frictional force is generated at a contact portion between the second slide member and the inner peripheral surface of the second storage chamber.

In claim 12,
When the second connection object rotates within the fall region, the movement amount of the second slide member relative to the first wing member per rotation angle is the rotation of the first slide member relative to the first wing member. It is larger than the amount of movement per angle.

In claim 13,
The first opening and the second opening are arranged side by side in the circumferential direction of the rotation axis of the second wing member with respect to the first wing member,
The first cam portion and the second cam portion are arranged side by side in the circumferential direction of the rotation shaft.

In claim 14,
The first opening and the second opening are arranged side by side in the axial direction of the rotation axis of the second wing member with respect to the first wing member,
The first cam portion and the second cam portion are arranged side by side in the axial direction of the rotation shaft.

In claim 15,
A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
A first wing member formed with a main accommodating chamber having a main opening and fixed to one of the first connection object and the second connection object;
A second wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first wing member;
A sub-accommodating chamber having a sub-opening is formed, is accommodated in the main accommodating chamber, and enters the main accommodating chamber in a direction protruding from the main opening while abutting the inner peripheral surface of the main accommodating chamber. A first slide member movable in a direction;
A first biasing member housed in the main housing chamber and biasing the first slide member in a direction protruding from the main opening;
A second slide member accommodated in the sub-accommodating chamber and movable in a direction protruding from the sub-opening and a direction of immersing in the sub-accommodating chamber while being in contact with the inner peripheral surface of the sub-accommodating chamber;
A second biasing member housed in the sub-accommodating chamber and biasing the second slide member in a direction protruding from the sub-opening;
Comprising
The second wing member is formed with a first cam portion that contacts the first slide member and a second cam portion that contacts the second slide member,
A frictional force is generated at a contact portion between the second slide member and the inner peripheral surface of the second storage chamber.

In claim 16,
When the second connection object rotates within the fall region, the amount of movement of the second slide member relative to the first slide member per rotation angle is the rotation of the first slide member relative to the first wing member. It is larger than the amount of movement per angle.

In claim 17,
A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
A first housing member having a first opening is formed, and a first wing member fixed to one of the first connection object and the second connection object;
A second wing member having a second opening is formed, is fixed to the other of the first connection object and the second connection object, and is rotatably connected to the first wing member. When,
A first slide received in the first storage chamber and movable in a direction protruding from the first opening and a direction of immersing in the first storage chamber while contacting the inner peripheral surface of the first storage chamber Members,
A first biasing member housed in the first housing chamber and biasing the first slide member in a direction protruding from the first opening;
A second slide that is accommodated in the second accommodation chamber and is movable in a direction protruding from the second opening and a direction of immersing in the second accommodation chamber while abutting the inner peripheral surface of the second accommodation chamber. Members,
A second biasing member housed in the second housing chamber and biasing the second slide member in a direction protruding from the second opening;
Comprising
The second wing member is formed with a first cam portion that contacts the first slide member,
The first wing member is formed with a second cam portion that contacts the second slide member,
A frictional force is generated at a contact portion between the second slide member and the inner peripheral surface of the second storage chamber.

In claim 18,
When the second connection object rotates within the fall region, the amount of movement of the second slide member relative to the second wing member per rotation angle is the rotation of the first slide member relative to the first wing member. It is larger than the amount of movement per angle.

In claim 19,
A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
A main hinge member;
A sub hinge member separate from the main hinge member;
Comprising
The main hinge member is
A first main wing member formed with a first storage chamber having a first opening and fixed to one of the first connection object and the second connection object;
A second main wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first main wing member;
A first slide received in the first storage chamber and movable in a direction protruding from the first opening and a direction of immersing in the first storage chamber while contacting the inner peripheral surface of the first storage chamber Members,
A first biasing member housed in the first housing chamber and biasing the first slide member in a direction protruding from the first opening;
Comprising
The second main wing member is formed with a first cam portion that contacts the first slide member,
The sub hinge member is
A second sub-wing member formed with a second storage chamber having a second opening and fixed to one of the first connection object and the second connection object;
A second sub wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first sub wing member;
A second slide that is accommodated in the second accommodation chamber and is movable in a direction protruding from the second opening and a direction of immersing in the second accommodation chamber while abutting the inner peripheral surface of the second accommodation chamber. Members,
A second biasing member housed in the second housing chamber and biasing the second slide member in a direction protruding from the second opening;
Comprising
The second sub wing member is formed with a second cam portion that contacts the second slide member,
A frictional force is generated at a contact portion between the second slide member and the inner peripheral surface of the second storage chamber.

In claim 20,
When the second connection object rotates within the fall region, the amount of movement of the second slide member relative to the first sub wing member per rotation angle is that of the first slide member relative to the first main wing member. It is larger than the movement amount per rotation angle.

The present invention has an effect that it is possible to close the second connection object slowly and surely with respect to the first connection object.

The right view which shows a multifunctional machine provided with 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 front view which shows 1st embodiment of the hinge which concerns on this invention. The right view which shows 1st embodiment of the hinge which concerns on this invention. FIG. 3 is a right side cross-sectional view showing the first embodiment of the hinge according to the present invention when the original cover is completely closed. The perspective view which 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 perspective view which shows the rotation pin of 1st embodiment of the hinge which concerns on this invention. The perspective view which shows the 1st slider of 1st embodiment of the hinge which concerns on this invention. The perspective view which shows the 2nd slider of 1st embodiment of the hinge which concerns on this invention. The right side sectional view showing a first embodiment of the hinge concerning the present invention when a manuscript press board opens. The right side sectional view showing a first embodiment of the hinge concerning the present invention when a manuscript press board shifts from a free stop field to a fall field. The right view which shows the fall area | region and free stop area | region of the original document crimping board of office equipment provided with 1st embodiment of the hinge which concerns on this invention. The figure which shows the relationship between the rotation angle of 1st embodiment of the hinge which concerns on this invention, and the position of a 1st slider. The figure which shows the relationship between the rotation angle of 1st embodiment of the hinge which concerns on this invention, and the position of a 2nd slider. The figure which shows the relationship between the rotation angle of 1st embodiment of the hinge which concerns on this invention, and the movement amount per rotation angle of a 1st slider and a 2nd slider. The figure which shows the relationship between the presence or absence of contact of a 2nd cam part and a 2nd slide member, and the rotation angle of the 2nd wing member with respect to a 1st wing member. The right view which shows a multifunctional machine provided with 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 front view which shows 2nd embodiment of the hinge which concerns on this invention. The top view which 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. 22 is a cross-sectional view taken along the line XX of FIG. FIG. 22 is a cross-sectional view taken along line YY in FIG. 21. The perspective view which 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 perspective view which shows the 1st slider of 2nd embodiment of the hinge which concerns on this invention. The perspective view which shows the 2nd slider of 2nd embodiment of the hinge which concerns on this invention. Sectional drawing on the right side which shows another embodiment of the 2nd slider in 2nd embodiment of the hinge which concerns on this invention. The right view which shows a multifunctional machine provided with 3rd embodiment of the hinge which concerns on this invention. The perspective view which shows 3rd embodiment of the hinge which concerns on this invention. The front view which shows 3rd embodiment of the hinge which concerns on this invention. The top view which shows 3rd embodiment of the hinge which concerns on this invention. The right view which shows 3rd embodiment of the hinge which concerns on this invention. FIG. 34 is a cross-sectional view taken along the line XX of FIG. FIG. 34 is a cross-sectional view taken along line YY in FIG. 33. The perspective view which shows the case member of 3rd embodiment of the hinge which concerns on this invention. The perspective view which shows the rotation member of 3rd embodiment of the hinge which concerns on this invention. The perspective view which shows the 1st slider of 3rd embodiment of the hinge which concerns on this invention. The perspective view which similarly shows the 1st slider of 3rd embodiment of the hinge which concerns on this invention. The perspective view which shows the 2nd slider of 3rd embodiment of the hinge which concerns on this invention. The right view which shows a multifunction machine provided with 4th embodiment of the hinge which concerns on this invention. The perspective view which shows 4th embodiment of the hinge which concerns on this invention. The front view which shows 4th embodiment of the hinge which concerns on this invention. The top view which shows 4th embodiment of the hinge which concerns on this invention. The right view which shows 4th embodiment of the hinge which concerns on this invention. FIG. 46 is a sectional view taken along arrow XX in FIG. 45. FIG. 46 is a cross-sectional view taken along line YY in FIG. 45. The perspective view which shows the 1st case member of 4th embodiment of the hinge which concerns on this invention. The perspective view which shows the 2nd case member of 4th embodiment of the hinge which concerns on this invention. The perspective view which shows the 2nd slider of 4th embodiment of the hinge which concerns on this invention. The right view which shows a multifunctional machine provided with 5th embodiment of the hinge which concerns on this invention. The front view which shows a multifunctional machine provided with 5th embodiment of the hinge which concerns on this invention. The perspective view which shows the main hinge member of 5th embodiment of the hinge which concerns on this invention. The front view which shows the main hinge member of 5th embodiment of the hinge which concerns on this invention. The top view which shows the main hinge member of 5th embodiment of the hinge which concerns on this invention. The right view which shows the main hinge member of 5th embodiment of the hinge which concerns on this invention. FIG. 57 is a cross-sectional view taken along arrow XX in FIG. 56. The perspective view which shows the main case member of 5th embodiment of the hinge which concerns on this invention. The perspective view which shows the main rotation member of 5th embodiment of the hinge which concerns on this invention. The perspective view which shows the sub hinge member of 5th embodiment of the hinge which concerns on this invention. The front view which shows the sub hinge member of 5th embodiment of the hinge which concerns on this invention. The top view which shows the sub hinge member of 5th embodiment of the hinge which concerns on this invention. The right view which shows the sub hinge member of 5th embodiment of the hinge which concerns on this invention. FIG. 64 is a cross-sectional view taken along arrow YY in FIG. 63. The perspective view which shows the subcase member of 5th embodiment of the hinge which concerns on this invention. The perspective view which shows the subrotation member of 5th embodiment of the hinge which concerns on this invention.

11 MFP 12 Main body (first connection object)
13 Document pressure plate (second connection object)
100 Hinge (first embodiment)
110 Case member (first wing member)
118 1st accommodating chamber 118a 1st opening part 119 2nd accommodating chamber 119a 2nd opening part 120 Rotating member (2nd wing member)
121b First cam portion 121c Second cam portion 130 Rotating pin (Rotating shaft)
140 First slider (first slide member)
150 First spring (first biasing member)
160 Second slider (second slide member)
170 Second spring (second biasing member)

Hereinafter, the hinge 100 which is the first embodiment of the hinge according to the present invention will be described with reference to FIGS. 1 to 17.

As shown in FIGS. 1 and 13, the hinge 100 connects the original cover 13 to the main body 12 of the multifunction machine 11 so as to be rotatable.
The multifunction machine 11 is an embodiment of office equipment. The multi-function device 11 includes a main body 12 and a document pressing plate 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 machine 11, more specifically, the operation of the document reading device, the printing device described later, and the ADF described later.
Further, the control device can store the image information generated by the document reading device and the image information acquired through a line (Internet line or the like) connected to the main body 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 document pressing plate 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, and a copying machine.

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 one of the two members (first connection object) to the other (second connection object) 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 a main body of an office device so as to be opened and closed, and a hood can be opened and closed on a car body Use for connecting to the toilet, use for connecting the toilet seat to the toilet so that it can be opened and closed, and the like.

2 to 5, the hinge 100 includes a case member 110, a rotating member 120, a rotating pin 130, a first slider 140, a first spring 150, a second slider 160, and a second spring 170.

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 made of resin and is manufactured by injection molding.
As shown in FIG. 6, the case member 110 includes a front surface portion 111, a rear surface portion 112, a left side surface portion 113, a right side surface portion 114, a bottom surface portion 115, a partition portion 116, and a protruding portion 117.

The front surface portion 111, the rear surface portion 112, the left side surface portion 113, the right side surface portion 114, and the bottom surface portion 115 are portions forming the front surface, the rear surface, the left side surface, the right side surface, and the bottom surface of the case member 110, respectively.
In the present embodiment, the front surface portion 111, the rear surface portion 112, the left side surface portion 113, and the right side surface portion 114 are elongated rectangular pyramid shaped plates that are long in the vertical direction and slightly tapered downward, and the bottom surface portion 115 is substantially square. It is a board.
The left end portion of the front surface portion 111 is connected to the front end portion of the left side surface portion 113, and the right end portion of the front surface portion 111 is connected to the front end portion of the right side surface portion 114.
The left end portion of the rear surface portion 112 is connected to the rear end portion of the left side surface portion 113, and the right end portion of the rear surface portion 112 is connected to the rear end portion of the right side surface portion 114.
The front end portion, rear end portion, left end portion, and right end portion of the bottom surface portion 115 are connected to the lower end portion of the front surface portion 111, the lower end portion of the rear surface portion 112, the lower end portion of the left side surface portion 113, and the lower end portion of the right side surface portion 114, respectively. .
Accordingly, the case member 110 forms a substantially rectangular parallelepiped box whose upper surface (ceiling surface) is open at the top and bottom, and a space is formed inside the case member 110.
The upper end portion of the left side surface portion 113 and the upper end portion of the right side surface portion 114 protrude upward from the upper end portion of the front surface portion 111 and the upper end portion of the rear surface portion 112.
A through hole 113a is formed at a position that becomes the upper end portion and the rear end portion of the left side surface portion 113, and a through hole 114a is formed at a position that becomes the upper end portion and rear end portion of the right side surface portion 114.

The partition 116 is a plate-like portion that is long in the vertical direction and is disposed in a space inside the case member 110 (a space surrounded by the front surface 111, the rear surface 112, the left side 113, the right side 114, and the bottom 115). .
The left end of the partition 116 is connected to a position slightly rearward of the inner plate surface (right surface) of the left side 113, and the right end of the partition 116 is slightly of the inner plate (left) of the right side 114. The lower end portion of the partition 116 is connected to a position slightly rearward of the plate surface (upper surface) inside the bottom surface 115.
Therefore, the space inside the case member 110 opens upward and is divided into two parts by the partition 116.

The first storage chamber 118 is an embodiment of the first storage chamber according to the present invention. The first storage chamber 118 is a space on the front side of the space inside the case member 110 that is divided into two front and rear portions by the partition 116.
The upper part of the first storage chamber 118 is open, and the opened part forms the first opening 118a. That is, the first storage chamber 118 has a first opening 118a. The first opening 118a is an embodiment of the first opening according to the present invention.

The second storage chamber 119 is an embodiment of the second storage chamber according to the present invention. The second storage chamber 119 is a space on the rear side of the space inside the case member 110 that is divided into two in the front-rear direction by the partition 116.
The upper part of the second storage chamber 119 is open, and the open part forms a second opening 119a. That is, the second storage chamber 119 has a second opening 119a. The second opening 119a is an embodiment of the second opening according to the present invention.

The protruding portion 117 is a plate-like portion. One end of the projecting portion 117 is connected to the outer plate surface (rear surface) of the rear surface portion 112, and the other end portion of the projecting portion 117 projects rearward of the outer plate surface (rear surface) of the rear surface portion 112.
The protrusion 117 is formed with a through hole 117 a that penetrates the upper and lower plate surfaces of the protrusion 117.

In the present embodiment, the case member 110 is fitted into a hole (not shown) having a substantially square shape in plan view formed at the rear end portion of the upper surface of the main body 12, and a screw (not shown) inserted through the through hole 117 a is used. The case member 110 is fixed to the main body 12 by being screwed into a screw hole formed in the main body 12 (see FIG. 1).

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 made of resin and is manufactured by injection molding.
As shown in FIGS. 5 and 7, the rotating member 120 has a body portion 121 and an attachment portion 122.

The body part 121 is a part forming the body of the rotating member 120. The body part 121 of this embodiment is a lump-like part formed with a smooth curved surface that connects the upper and lower halfway part of the front surface to the lower end part of the rear surface through the lower surface.
A through hole 121 a is formed in the body portion 121. The through-hole 121a is a hole that penetrates from the rear part of the left side surface of the body part 121 to the rear part of the right side surface.
The body part 121 is formed with a first cam part 121b and a second cam part 121c.
The first cam portion 121b is an embodiment of the first cam portion according to the present invention, and the second cam portion 121c is an embodiment of the second cam portion according to the present invention.
The first cam portion 121b is a portion of the curved surface formed on the body portion 121 that corresponds to the front and rear center portion of the lower surface to the rear end portion of the lower surface.
The 2nd cam part 121c is a part corresponding to from the rear-end part of a lower surface to the lower end part of a rear surface among the curved surfaces formed in the trunk | drum 121. FIG.

As shown in FIGS. 5 and 7, in this embodiment, the rear end portion of the first cam portion 121b and the front end portion of the second cam portion 121c overlap. That is, the rear end portion of the first cam portion 121b also functions as the front end portion of the second cam portion 121c.
Thus, depending on the shape of the first wing member and the second wing member according to the present invention, the first cam portion and the second cam portion according to the present invention may not be completely separated from each other (the first cam). Part of the part and part of the second cam part may overlap).

As shown in FIGS. 2 and 7, the attachment portion 122 is a plate-like portion having a pair of generally rectangular plate surfaces as a top surface and a bottom surface in plan view. The left and right central portions of the attachment portion 122 are connected to the upper end portion of the body portion 121, and the left end portion and the right end portion of the attachment portion 122 protrude to the left side and the right side of the body portion 121, respectively.
Through holes 122 a, 122 a, 122 a, and 122 a are formed at four corners (left front end, right front end, left rear end, and right rear end) of the attachment portion 122.

In the present embodiment, screws (not shown) are inserted into the through holes 122a, 122a, 122a, and 122a from below, and the screws are screwed into screw holes formed in the rear end portion of the lower surface of the original cover 13. Thus, the rotating member 120 is fixed to the original cover 13 (see FIG. 1).

The rotation pin 130 is an embodiment of the rotation shaft according to the present invention.
As shown in FIG. 8, the rotation pin 130 of this embodiment is a metal member having a body part 131 and a head part 132.

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 diameter of the head portion 132 is larger than the diameter of the body portion 131.

As shown in FIGS. 2, 3, and 5, the body 131 of the rotation pin 130 is inserted into a through hole 113 a formed in the left side surface 113 of the case member 110, and the through hole formed in the rotation member 120. 121 a and penetrates through hole 114 a formed in right side surface 114 of case member 110.
Since the diameter of the through hole 121 a is slightly larger than the diameter of the body portion 131 and the diameters of the through hole 113 a and the through hole 114 a are slightly larger than the diameter of the body portion 131, the rotation pin 130 is connected to the rotation member 120. It is fixed so that it cannot rotate relative to it and is pivotally supported by the case member 110 so as to be rotatable.
Accordingly, the rotation member 120 is rotatably connected to the case member 110 via the rotation pin 130, and as a result, the document pressing plate 13 (the lower rear end portion thereof) is connected to the main body 12 (the upper rear end portion thereof) by the hinge 100. ) In a pivotable manner.

One end portion of the rotating pin 130, that is, the crimping portion, is formed by caulking (plastically deforming) a thin portion formed at one end portion (tip portion) of the body portion 131 so as to spread in the radial direction of the rotating pin 130. The diameter of the processed part is larger than the diameter of the through hole 114a.
The diameter of the head 132 is larger than that of the through hole 113a.
In this way, the swivel pin 130 can be fixed to the case member 110 so as not to drop off by crimping one end portion (tip portion) of the body portion 131.

As shown in FIG. 5, when the rotating member 120 is rotatably connected to the case member 110 via the rotating pin 130, the lower portion of the rotating member 120 (the portion where the first cam portion 121b is formed and The combination of the portions where the second cam portion 121c is formed is opposed to the first opening 118a and the second opening 119a of the first storage chamber 118 formed in the case member 110.

The first slider 140 is an embodiment of the first slide member according to the present invention.
The first slider 140 of this embodiment is made of resin and is manufactured by injection molding.
As shown in FIG. 9, the first slider 140 has a main plate 141, a left side plate 142, and a right side plate 143.

The main plate 141 is a plate-like portion having a substantially rectangular shape in plan view. The main plate 141 has a pair of plate surfaces as an upper surface and a lower surface. A contact protrusion 141 a is formed on the main plate 141. The contact protrusion 141a protrudes upward from the upper surface of the main plate 141.
The left side plate 142 is a plate-like portion that is substantially rectangular in side view. The left side plate 142 has a pair of plate surfaces as a left side surface and a right side surface. The upper end portion of the left side plate 142 is connected to the left end portion of the main plate 141.
The right side plate 143 is a plate-like portion that is substantially rectangular in side view. The right side plate 143 has a pair of plate surfaces as a left side surface and a right side surface. The upper end portion of the right side plate 143 is connected to the right end portion of the main plate 141.

As shown in FIG. 5, the first slider 140 is housed in the first housing chamber 118 of the case member 110.
The first slider 140 accommodated in the first accommodation chamber 118 contacts the inner peripheral surface of the first accommodation chamber 118. Further, the first slider 140 accommodated in the first accommodation chamber 118 is movable in a direction protruding from the first opening 118 a and a direction immersing in the interior (back part) of the first accommodation chamber 118.
More specifically, the front end surface of the main plate 141, the front end surface of the left side plate 142, and the front end surface of the right side plate 143 are in contact with the rear surface of the front surface portion 111 so as to be slidable in the vertical direction. The rear end surface and the rear end surface of the right side plate 143 are in contact with the front surface of the partition 116 so as to be slidable in the vertical direction, and the left surface of the left side plate 142 is in contact with the right surface of the left side surface portion 113 so as to be slidable in the vertical direction. The right surface of the face plate 143 contacts the left surface of the right side surface portion 114 so as to be slidable in the vertical direction.

The first spring 150 is an embodiment of the first biasing member according to the present invention.
The first spring 150 of this embodiment is a metal winding spring, and is a compression spring (a spring used in a compressed state).
As shown in FIG. 5, the first spring 150 is housed in the first housing chamber 118 of the case member 110.
One end (lower end) of the first spring 150 accommodated in the first accommodation chamber 118 is in contact with the upper surface of the bottom portion 115, and the other end (upper end) of the first spring 150 is the main plate 141 of the first slider 140. It contacts the lower surface of the.
Accordingly, the first spring 150 urges the first slider 140 in a direction (upward in this embodiment) to protrude from the first opening 118a of the first storage chamber 118, and the contact protrusion 141a of the first slider 140 is It contacts the first cam portion 121b of the rotating member 120.
As a result, the urging force of the first spring 150 is transmitted to the rotating member 120 via the first slider 140, so that the rotating member 120 rotates counterclockwise with respect to the case member 110 when viewed from the right side. The original cover 13 is urged in the opening direction with respect to the main body 12 (see FIG. 1).

The second slider 160 is an embodiment of the second slide member according to the present invention.
The second slider 160 of this embodiment is made of resin and is manufactured by injection molding.
As shown in FIG. 10, the second slider 160 is a plate-like member having a pair of rectangular plate surfaces extending in the vertical direction in a front view as a front surface and a rear surface.
A contact surface 160 a is formed at the upper front end of the second slider 160. The abutment surface 160 a is a front-declining slope connected to the upper end portion of the front surface of the second slider 160 and the front end portion of the upper end surface of the second slider 160. It is inclined with respect to it (not parallel to either the front surface of the second slider 160 or the upper end surface of the second slider 160).

As shown in FIG. 5, the second slider 160 is accommodated in the second accommodation chamber 119 of the case member 110.
The second slider 160 accommodated in the second accommodation chamber 119 contacts the inner peripheral surface of the second accommodation chamber 119. Further, the second slider 160 accommodated in the second accommodation chamber 119 is movable in a direction protruding from the second opening 119a and a direction immersing in the interior (back part) of the second accommodation chamber 119.
More specifically, the front surface of the second slider 160 abuts against the rear surface of the partition 116 so as to be slidable in the vertical direction, and the rear surface of the second slider 160 abuts against the front surface of the rear surface portion 112 so as to be slidable in the vertical direction. The left end surface of the second slider 160 is in contact with the right surface of the left side surface portion 113 so as to be slidable in the vertical direction, and the right end surface of the second slider 160 is in contact with the left surface of the right side surface portion 114 so as to be slidable in the vertical direction.

Grease is applied to the contact portion between the outer peripheral surface of the second slider 160 (front surface, rear surface, left end surface and right end surface of the second slider 160) and the inner peripheral surface of the second storage chamber 119. In other words, the grease is disposed in the gap between the second slider 160 and the inner peripheral surface of the second storage chamber 119.

The grease disposed in the gap between the second slider 160 and the inner peripheral surface of the second storage chamber 119 is an embodiment of the viscous body according to the present invention.
Specific examples of the viscous material according to the present invention include various greases, liquid resins, and the like, but are not limited thereto.
That is, the “viscous body” is a flowable substance (fluid), and “when the viscous body is disposed in the gap between the second slide member and the inner peripheral surface of the second storage chamber, the second slide member is "The force required to move in the direction protruding from the two openings and the direction of immersing in the second storage chamber" is "the viscous body is not disposed in the gap between the second slide member and the inner peripheral surface of the second storage chamber" Viscosity (Newtonian viscosity or non-Newtonian viscosity) that is greater than the force required to move the second slide member in the direction protruding from the second opening and the direction of immersing in the second storage chamber ).

The second spring 170 is an embodiment of the second urging member according to the present invention.
The second spring 170 of the present embodiment is a metal winding spring, and is a compression spring (a spring used in a compressed state).
As shown in FIG. 5, the second spring 170 is housed in the second housing chamber 119 of the case member 110.
One end (lower end) of the second spring 170 accommodated in the second accommodation chamber 119 is in contact with the upper surface of the bottom portion 115, and the other end (upper end) of the second spring 170 is the lower end surface of the second slider 160. Abut.
Accordingly, the second spring 170 urges the second slider 160 in a direction (upward in the present embodiment) protruding from the second opening 119a of the second storage chamber 119.

Hereinafter, the behavior of the hinge 100 when the original cover 13 is closed will be described with reference to FIGS. 5 and 11 to 16.
As shown in FIG. 13, in this embodiment, when the original pressure plate 13 is completely closed, that is, when the lower surface of the original pressure plate 13 is in contact with the upper surface of the main body 12, the rotation angle θ ( When the rotation angle θ of the original cover 13 with respect to the main body 12 is set to “0 °” and the original cover 13 is rotated in the opening direction, the rotation angle θ increases (the rotation angle θ becomes positive). Thus, the rotation angle θ of the original cover 13 is defined. In the present embodiment, the rotation angle θ of the original cover 13 when the original cover 13 is completely opened is “50 °”.

In the present embodiment, when the rotation angle θ of the document crimping plate 13 is 6 ° or more (θ ≧ 6 °), the document crimping plate 13 belongs to the “free stop region”, and the rotation angle θ of the document crimping plate 13 is. Is less than 6 ° (0 ° ≦ θ <6 °), the original cover 13 belongs to the “falling region”.

The “free stop area” in the present embodiment includes (A1) “rotational force (moment) acting on the rotation member 120 around the rotation pin 130 due to the weight of the original cover 13” and (B1) “ This is a region where the rotational force (moment) acting on the rotation member 120 around the rotation pin 130 due to the biasing force of the first spring 150 is balanced.

As shown in FIG. 11, when the document crimping plate 13 belongs to the “free stop region”, the first cam portion 121 b of the rotating member 120 contacts the contact protrusion 141 a of the first slider 140.
Further, when the original cover 13 belongs to the “free stop area”, the second cam portion 121 c of the rotating member 120 is separated from the second slider 160 (not in contact with the second slider 160).

When the original cover 13 is in the “free stop region” and the original cover 13 is rotated in the closing direction (the rotation angle θ of the original cover 13 is reduced), the rotational force in (A1) increases. To do.
This is because the gravity acting on the document crimping plate 13 is a component in the radial direction (direction in which the front end portion of the document crimping plate 13 and the rotation pin 130 are connected in the side view) and the circumferential direction (the direction perpendicular to the radial direction in the side view). This is because the circumferential component, that is, the rotational force of (A1) 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 region”, the rotating member 120 rotates clockwise with respect to the case member 110 in the right side view. The contact portion between the first cam portion 121b of the rotating member 120 and the contact protrusion 141a of the first slider 140 changes, and the first slider 140 is pushed down to move downward (see FIGS. 12 and 14). .
When the first slider 140 moves downward, the first spring 150 is compressed (the total length of the first spring 150 is reduced), the urging force of the first spring 150 is increased, and the rotational force of (B1) is increased. To do.
As a result, when the document pressing plate 13 belongs to the “free stop region”, the rotational force (A1) and the rotational force (B1) are balanced even if the rotation angle θ of the document pressing plate 13 changes. More precisely, when the original cover 13 is in the “free stop region”, the rotational force (A1) and the rotational force (B1) are balanced even if the rotational angle θ of the original cover 13 changes. Further, the shapes of the first cam portion 121b and the contact protrusion 141a are preset.
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 of (A1) is larger than the rotational force of (B1). In this embodiment, the fall region is set in a range from a state where the original cover 13 is closed (θ = 0 °) to a state where it is opened by a predetermined angle (θ = 6 ° in this embodiment).
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 has its own weight (strictly speaking, the rotational force of (A1) and the rotation of (B1). It rotates in the closing direction by the difference between the force and the force.

As shown in FIG. 12, when the original cover 13 belongs to the “falling region”, the first cam portion 121 b of the rotating member 120 contacts the contact protrusion 141 a of the first slider 140.
However, as shown in FIG. 14, when the original cover 13 belongs to the “falling region”, the position of the first 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 original pressing plate 13 belongs to the “falling region”, the first cam portion prevents the position of the first slider 140 relative to the case member 110 from changing even if the rotation angle θ of the original pressing plate 13 changes. The shapes of 121b and abutment protrusion 141a are preset.
As a result, when the original cover 13 belongs to the “falling region”, the rotational force of (B1) is substantially zero, and the rotational force of (A1) is larger than the rotational force of (B1).

As shown in FIG. 12, when the original cover 13 belongs to the “falling region”, the second cam portion 121 c of the rotating member 120 contacts the contact surface 160 a of the second slider 160.
Accordingly, when the document pressing plate 13 is rotated in the closing direction while the document pressing plate 13 belongs to the “falling region”, the rotating member 120 is rotated clockwise with respect to the case member 110 in the right side view, The contact portion between the second cam portion 121c of the rotating member 120 and the contact surface 160a of the second slider 160 changes, and the second slider 160 is pushed down to move downward (FIGS. 5, 12, and 15). reference).

When the second slider 160 moves downward, the second slider 160 is caused by the viscous resistance of the grease applied to the contact portion between the outer peripheral surface of the second slider 160 and the inner peripheral surface of the second storage chamber 119. Resistive force acts.
Accordingly, when the original cover 13 belongs to the “falling region”, a part of the rotational force (A1) is offset by the resistance force due to the viscous resistance of the grease, and the speed at which the original cover 13 rotates in the closing direction. Becomes slower (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 operator holds the document crimping plate 13 by hand and rotates the document crimping plate 13 in the opening direction, the second slider 160 resists the viscous resistance of grease by the biasing force of the second spring 170. Since it moves upward, when the document crimping plate 13 belongs to the “falling region”, “the state where the second cam portion 121 c of the rotating member 120 is in contact with the contact surface 160 a of the second slider 160” is maintained.

As described above, the hinge 100 is
A hinge for connecting the document pressing plate 13 to the body 12 so as to be openable and closable;
A first housing chamber 118 having a first opening 118a and a second housing chamber 119 having a second opening 119a are formed, and a case member 110 fixed to the main body 12 of the multifunction machine 11,
A rotating member 120 fixed to the document pressing plate 13 of the multifunction machine 11 and rotatably connected to the case member 110;
A first slider accommodated in the first accommodation chamber 118 and movable in a direction protruding from the first opening 118 a and a direction immersing in the first accommodation chamber 118 while abutting the inner peripheral surface of the first accommodation chamber 118. 140,
A first spring 150 housed in the first housing chamber 118 and biasing the first slider 140 in a direction protruding from the first opening 118a;
A second slider housed in the second housing chamber 119 and movable in a direction protruding from the second opening 119a and a direction immersing into the second housing chamber 119 while abutting the inner peripheral surface of the second housing chamber 119. 160,
A second spring 170 housed in the second housing chamber 119 and biasing the second slider 160 in a direction protruding from the second opening 119a;
Comprising
The rotating member 120 is formed with a first cam portion 121b that contacts the first slider 140 (the contact protrusion 141a thereof) and a second cam portion 121c that contacts the second slider 160 (the contact surface 160a thereof). Formed,
Grease is disposed in the gap between the second slider 160 and the inner peripheral surface of the second storage chamber 119.
With this configuration, the original cover 13 can be closed gently and reliably.

As shown in FIGS. 5, 11, 12, and 16, when the document pressing plate 13 of the multifunction machine 11 rotates in a state belonging to the “falling area” (within the “falling area”), the case member 110. The amount of movement of the second slider 160 per rotation angle (see the thick solid line in FIG. 16) is larger than the amount of movement of the first slider 140 relative to the case member 110 per rotation angle (see the thick dotted line in FIG. 16). large.
With this configuration, the second slider 160 moves more than the first slider 140 in a state where the original cover 13 belongs to the “falling region”. It is possible to effectively utilize the resistance force caused by the viscous resistance of the grease arranged in the gap with the peripheral surface as a force that cancels a part of the rotational force of (A1).

In particular, in the present embodiment, when the rotation angle θ of the original cover 13 becomes small in a state where the original cover 13 belongs to the “falling region”, the second cam portion 121c moves substantially rearward. Since the abutment surface 160a that is gently inclined with respect to the moving direction of the portion 121c (which is not perpendicular to the moving direction of the second cam portion 121c but forms an angle close to vertical) abuts on the second cam portion 121c, the second The slider 160 moves downward, which is a direction substantially perpendicular to the moving direction of the second cam portion 121c.
With this configuration, the movement amount of the second slider 160 can be set larger than the movement amount of the second cam portion 121c in the state where the original cover 13 belongs to the “falling region”. The resistance force caused by the viscous resistance of the grease disposed in the gap between the two sliders 160 and the inner peripheral surface of the second storage chamber 119 is more effectively used as a force that cancels a part of the rotational force of (A1). Is possible.

In the present embodiment, the rotation angle θ of the original cover 13 when the original cover 13 shifts from the “free stop area” to the “fall area” is “6 °”, but the present invention is not limited to this. .
That is, by appropriately setting the shape of the contact portion between the first slide member of the hinge according to the present invention and the first cam portion of the rotating member, the second connection object moves from the free stop region to the fall region. It is possible to arbitrarily set the rotation angle of the second connection object at the time according to the use or the like.

In the present embodiment, when the document pressing plate 13 belongs to the “free stop region”, the second cam portion 121c of the rotating member 120 and the second slider 160 do not come into contact with each other, and the document pressing plate 13 enters the “falling region”. When belonging, the second cam portion 121c of the rotating member 120 and the second slider 160 abut, but the present invention is not limited to this.
That is, as shown in FIG. 17, the present invention can employ the following four configurations.
(I) A configuration in which the second cam portion of the second wing member abuts against the second slide member throughout the “free stop region” and the “fall region”.
(Ii) The second cam portion of the second wing member abuts against the second slide member in the area near the “falling area” in the “free stop area” and the entire area of the “falling area”. The structure which the 2nd cam part of a 2nd wing member does not contact | abut to a 2nd slide member in the area | region away from the area | region.
(Iii) The second cam portion of the second wing member is in contact with the second slide member in the entire “free stop region”, and the second cam portion of the second wing member is the second slide member in the entire “fall region”. The structure which does not contact | abut (the hinge 100 corresponds to the said structure).
(Iv) The second cam portion of the second wing member abuts against the second slide member in the “falling region” away from the “free stop region”, and the entire “free stop region” and “falling region” In the region near the “free stop region”, the second cam portion of the second wing member does not contact the second slide member.

From the viewpoint of reducing the force applied by the operator to the second connection object in order to rotate the second connection object in the closing direction in the “free stop region”, the configurations of (iii) and (iv) are (i) ) And (ii).
Further, from the viewpoint of slowing the speed at which the second connection object rotates in the closing direction when the second connection object moves to the “free stop area”, (i), (ii) and (iii) The configuration is more desirable than the configuration of (iv).
Therefore, in order to rotate the second connection object in the closing direction, the viewpoint of reducing the force exerted on the second connection object by the operator and when the second connection object moves to the “free stop area”, In consideration of both of the viewpoints of slowing the speed at which the two connected objects rotate in the closing direction, the configuration (iii) is most desirable.

In the present embodiment, in the “falling region”, a resistance force caused by the viscous resistance of the grease disposed in the gap between the second slider 160 and the second storage chamber 119 acts on the rotating member 120. A part of the “rotational force in the closing direction (rotational force of (A1))” is offset, but the present invention is not limited to this.
For example, by further narrowing the gap between the second slider 160 and the second storage chamber 119 (smaller than when grease is disposed), the second slider 160 and the second storage chamber 119 A frictional force may be generated in the gap (abutting portion), and a part of the “rotating force in the direction of closing the document pressing plate 13” acting on the rotating member 120 may be canceled out.

Hereinafter, a hinge 200 that is a second embodiment of the hinge according to the present invention will be described with reference to FIGS.

As shown in FIG. 18, the hinge 200 connects the original cover 23 to the main body 22 of the multi-function device 21 in a rotatable manner.
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.
Since the basic configuration and functions of the multi-function device 21, the main body 22, and the original pressure plate 23 are substantially the same as those of the multi-function device 11, the main body 12, and the original pressure plate 13 shown in FIG.

19 to 24, the hinge 200 includes a case member 210, a rotating member 220, a rotating pin 230, a first slider 240, a first spring 250, a second slider 260, and a second spring 270.

Case member 210 is an embodiment of the first wing member according to the present invention.
The case member 210 of the present embodiment is made of resin and is manufactured by injection molding.
As shown in FIGS. 19 and 25, the case member 210 is a substantially thin rectangular parallelepiped member.
As shown in FIG. 25, two spaces of a first storage chamber 211 and a second storage chamber 212 are formed inside the case member 210.

The first storage chamber 211 is an embodiment of the first storage chamber according to the present invention. The first storage chamber 211 is a left-side space of the two spaces formed inside the case member 210 (when the hinge 200 connects the document pressing plate 23 of the multifunction device 21 to the main body 22 so as to be rotatable, the multifunction device). 21 is a space located on the left side of 21).
The first storage chamber 211 is open at the base end portion of the case member 210 (the end portion closer to the position where the case member 210 and the rotation member 220 are rotatably connected), and the opening is open. The part forms the first opening 211a. That is, the first storage chamber 211 has a first opening 211a. The first opening 211a is an embodiment of the first opening according to the present invention.
Guide grooves 211 b and 211 b are formed on the inner peripheral surface of the first storage chamber 211. The guide grooves 211b and 211b are grooves extending from the first opening 211a of the first storage chamber 211 toward the back of the first storage chamber 211 (from the base end portion of the case member 210 toward the distal end portion).

The second storage chamber 212 is an embodiment of the second storage chamber according to the present invention. Of the two spaces formed inside the case member 210, the second storage chamber 212 is a space on the right side (when the hinge 200 connects the document crimping plate 23 of the multifunction device 21 to the main body 22 so as to be rotatable, the multifunction device). The space located on the right side of 21).
The second storage chamber 212 is opened at the base end portion of the case member 210, and the opened portion forms the second opening 212a. That is, the second storage chamber 212 has a second opening 212a. The second opening 212a is an embodiment of the second opening according to the present invention.
Guide protrusions 212b, 212b,... Are formed on the inner peripheral surface of the second storage chamber 212. The guide protrusions 211b, 211b,... Are protrusions extending from the second opening 212a of the second storage chamber 212 toward the back of the second storage chamber 212 (from the base end portion of the case member 210 toward the distal end portion). Ridge).

A protrusion 213 is formed on the case member 210. The protrusion 213 is a plate-like part.
One end of the projecting portion 213 is connected to the right side surface of the case member 210 (the surface facing the right side of the multi-function device 21 when the hinge 200 is connected to the main body 22 so as to be rotatable). The other end of the protruding portion 213 protrudes to the right side of the right side surface of the case member 210.
Through holes 213a and 213b are formed in the protruding portion 213. The through holes 213a and 213b are holes that penetrate the pair of plate surfaces of the protruding portion 213.

A protrusion 214 is formed on the case member 210. The protruding part 214 is a plate-like part.
One end of the protrusion 214 is connected to the left side surface of the case member 210 (the surface facing the left side of the multi-function device 21 when the hinge 200 is connected to the main body 22 so as to be rotatable). The other end of the protrusion 214 protrudes to the left side of the left side surface of the case member 210.
A through hole 214 a is formed in the protrusion 214. The through hole 214 a is a hole that penetrates the pair of plate surfaces of the protrusion 214.

Through holes 215 a, 215 b, and 215 c are formed in the base end portion of the case member 210.
The through holes 215a, 215b, and 215c are arranged in a straight line, and the combination of the through holes 215a, 215b, and 215c substantially penetrates from the left side surface to the right side surface of the case member 210.
The longitudinal direction (axial direction) of the through holes 215a, 215b, 215c is parallel to the left-right direction.

In the present embodiment, screws (not shown) are inserted into the through holes 213a and 213b and the through hole 214a, and the screws are screwed into screw holes (not shown) formed at the rear end portion of the lower surface of the original cover 23. As a result, the case member 210 is fixed to the original cover 23 (see FIG. 18).

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 made of resin and is manufactured by injection molding.
As shown in FIGS. 19, 22, and 26, the rotation member 220 has a body portion 221 and an attachment portion 222.

The body part 221 is a part that forms the body of the rotating member 220. As shown in FIG. 26, the body portion 221 of the present embodiment is a substantially plate-shaped portion having a pair of plate surfaces as an upper surface and a lower surface.

A first cam portion 221 a is formed on the body portion 221.
The first cam portion 221 a is an embodiment of the first cam portion according to the present invention, and is a massive portion that protrudes upward from the left half of the upper surface of the body portion 221.
A through hole 221c is formed in the first cam portion 221a. The through hole 221c is a hole penetrating from the left side rear part to the right side rear part of the first cam part 221a.

A second cam portion 221 b is formed on the body portion 221.
The second cam portion 221b is an embodiment of the second cam portion according to the present invention, and is a massive portion protruding upward from the right half of the upper surface of the body portion 221.

A protrusion 221 d is formed on the body 221. The protruding portion 221d is a plate-shaped portion having a pair of plate surfaces as left and right side surfaces, and protrudes upward from a right end portion (a position on the right side of the second cam portion 221b) of the upper surface of the body portion 221.
A through hole 221e is formed in the protrusion 221d. The through hole 221e is a hole that penetrates the left and right plate surfaces of the protrusion 221d.
The through hole 221c formed in the first cam portion 221a and the through hole 221e formed in the protrusion 221d are arranged in a straight line, and the longitudinal direction (axial direction) of the combination of the through hole 221c and the through hole 221e is Parallel to the left-right direction.

The attachment portion 222 is a portion that forms the lower half of the rotating member 220. As shown in FIG. 26, the attachment portion 222 of the present embodiment is a substantially rectangular parallelepiped portion extending in the vertical direction. The upper end portion of the attachment portion 222 is connected to the left half of the lower surface of the body portion 221, and the lower end portion of the attachment portion 222 is slightly tapered.

In the present embodiment, the rotation member 220 is fixed to the main body 22 by fitting the mounting portion 222 into a hole (not shown) in a substantially square shape in plan view formed at the rear end portion of the upper surface of the main body 22 ( (See FIG. 18).

In the case of the hinge 100 shown in FIG. 1, while the case member 110 which is one embodiment of the first wing member according to the present invention is fixed to the main body 12 which is one embodiment of the first connection object according to the present invention. The rotating member 120, which is an embodiment of the second wing member according to the present invention, is fixed to the manuscript crimping plate 13, which is an embodiment of the second connection object according to the present invention.
On the other hand, in the case of the hinge 200 shown in FIG. 18, the case member 210 which is one embodiment of the first wing member according to the present invention is a document crimping which is one embodiment of the second connection object according to the present invention. While being fixed to the board 23, the rotation member 220 which is one Embodiment of the 2nd wing member which concerns on this invention is fixed to the main body 22 which is one Embodiment of the 1st connection target object concerning this invention.
Thus, any one of the first wing member and the second wing member according to the present invention may be fixed to the first connection object and the other may be fixed to the second connection object.

The rotation pin 230 is an embodiment of the rotation shaft according to the present invention.
As shown in FIGS. 20 and 21, the rotation pin 230 of the present embodiment has a body portion 231 and a head portion 232, and is made of metal in which a caulking hole 231 a is formed in one end portion (tip portion) of the body portion 231. It is a member.
The basic configuration of the rotation pin 230 of the present embodiment is substantially the same as that of the rotation pin 130 shown in FIG.
As shown in FIG. 21, the rotating member 220 is rotated by inserting the body portion 231 of the rotating pin 230 into the through hole 215a, the through hole 221c, the through hole 215b, the through hole 221e, and the through hole 215c in order from the left. Via the moving pin 230, the case member 210 is pivotally connected. As a result, the document crimping plate 23 (the lower rear end portion thereof) is pivotally connected to the main body 22 (the upper rear end portion thereof) by the hinge 200. The

As shown in FIG. 23, when the rotation member 220 is rotatably connected to the case member 210 via the rotation pin 230, the first cam portion 221 a is in the first storage chamber 211 formed in the case member 210. Opposite the first opening 211a.
As shown in FIG. 24, when the rotation member 220 is rotatably connected to the case member 210 via the rotation pin 230, the second cam portion 221 b is formed in the second storage chamber 212 formed in the case member 210. Opposite the second opening 212a.

The first slider 240 is an embodiment of the first slide member according to the present invention.
The first slider 240 of this embodiment is made of resin and is manufactured by injection molding.
As shown in FIGS. 23 and 27, the first slider 240 has a contact portion 241, guide portions 242 and 242, and a cylindrical portion 243.

As shown in FIG. 27, the contact portion 241 has a thin rectangular parallelepiped portion having a pair of plate surfaces, and a semi-cylindrical portion having a shape obtained by dividing a cylinder into two by a plane passing through the axis.
The semi-cylindrical portion of the contact portion 241 is stacked on one plate surface of the rectangular parallelepiped portion, so that the semi-cylindrical portion forms a protrusion protruding from the thin rectangular parallelepiped portion. A surface corresponding to the outer peripheral surface (curved surface) of the semi-cylindrical portion forms a contact surface 241a.

The guide portions 242, 242 have a rectangular parallelepiped shape with rounded corners. The guide parts 242 and 242 are connected to the left and right side surfaces of the contact part 241.

The cylinder part 243 has a substantially cylindrical shape. One end portion of the cylindrical portion 243 is connected to the other plate surface of the contact portion 241 (the plate surface on which the two divided cylindrical protrusions are not stacked).

As shown in FIG. 23, the first slider 240 is housed in the first housing chamber 211 of the case member 210.
The first slider 240 accommodated in the first accommodation chamber 211 contacts the inner peripheral surface of the first accommodation chamber 211. The first slider 240 accommodated in the first accommodation chamber 211 is movable in a direction protruding from the first opening 211 a and a direction immersing in the interior (back part) of the first accommodation chamber 211.
More specifically, when the first slider 240 is accommodated in the first accommodating chamber 211, the four end surfaces of the thin rectangular parallelepiped portion of the contact portion 241 are the inner peripheral surfaces (four inner wall surfaces) of the first accommodating chamber 211, respectively. The guide portions 242 and 242 are slidably engaged with the guide grooves 211b and 211b.

The first spring 250 is an embodiment of the first biasing member according to the present invention.
The first spring 250 of this embodiment is a metal winding spring, and is a compression spring (a spring used in a compressed state).
As shown in FIG. 23, the first spring 250 is housed in the first housing chamber 211 of the case member 210.
One end portion of the first spring 250 housed in the first housing chamber 211 abuts on the bottom surface of the first housing chamber 211, and the other end portion of the first spring 250 is fitted into the cylindrical portion 243 of the first slider 240. At the same time, it comes into contact with the other plate surface of the contact portion 241 (the plate surface on which the two divided cylindrical projections are not stacked).
Accordingly, the first spring 250 urges the first slider 240 in a direction protruding from the first opening 211a of the first storage chamber 211, and the contact surface 241a of the contact portion 241 of the first slider 240 is a rotating member. 220 abuts on the first cam portion 221a.
As a result, the urging force of the first spring 250 is transmitted to the rotating member 220 via the first slider 240, so that the rotating member 220 rotates clockwise with respect to the case member 210 when viewed from the right side. The original pressing plate 23 is urged in the opening direction with respect to the main body 22 (see FIG. 18).

The second slider 260 is an embodiment of the second slide member according to the present invention.
The second slider 260 of this embodiment is made of resin and is manufactured by injection molding.
As shown in FIG. 28, the second slider 260 has a shape in which one end of an elongated rectangular parallelepiped is cut obliquely with respect to the longitudinal direction of the rectangular parallelepiped and a groove extending in the longitudinal direction is formed on the outer peripheral surface (four side surfaces). Have

A contact surface 261 is formed at one end of the second slider 260. The contact surface 261 is a plane that is inclined with respect to the longitudinal direction of the second slider 260 (a plane that is not perpendicular to the longitudinal direction of the second slider 260 and is not parallel).

Guide grooves 262a, 262b, 262c, 262d, 262e, and 262f are formed on the outer peripheral surface of the second slider 260. The guide grooves 262a, 262b, 262c, 262d, 262e, and 262f are grooves extending in the longitudinal direction of the second slider 260.

A spring receiving hole 263 is formed in the second slider 260.
The spring receiving hole 263 is a hole that opens to the other end of the second slider 260 (the end opposite to the end where the contact surface 261 is formed).

As shown in FIG. 24, the second slider 260 is housed in the second housing chamber 212 of the case member 210.
The second slider 260 accommodated in the second accommodation chamber 212 abuts on the inner peripheral surface of the second accommodation chamber 212. Further, the second slider 260 accommodated in the second accommodation chamber 212 is movable in a direction protruding from the second opening 212 a and a direction immersing in the interior (back part) of the second accommodation chamber 212.
More specifically, guide grooves 262 a, 262 b, 262 c, 262 d, 262 e, and 262 f formed on the outer peripheral surface of the second slider 260 are guided protrusions 212 b, 212 b,. Slidably engage with (see FIGS. 25 and 28).

Grease is applied to the contact portion between the outer peripheral surface of the second slider 260 and the inner peripheral surface of the second storage chamber 212. In other words, a gap between the second slider 260 and the inner peripheral surface of the second storage chamber 212 (including a gap between the guide grooves 262a, 262b, 262c, 262d, 262e, 262f and the guide protrusions 212b, 212b,...). Grease is placed in the area.
The grease disposed in the gap between the second slider 260 and the inner peripheral surface of the second storage chamber 212 is an embodiment of the viscous body according to the present invention.

The second spring 270 is an embodiment of the second urging member according to the present invention.
The second spring 270 of this embodiment is a metal winding spring, and is a compression spring (a spring used in a compressed state).
As shown in FIG. 24, the second spring 270 is accommodated in the second accommodation chamber 212 of the case member 210.
One end of the second spring 270 housed in the second housing chamber 212 abuts the bottom surface of the second housing chamber 212, and the other end of the second spring 270 is housed in the spring receiving hole 263 of the second slider 260. At the same time, it abuts on a step surface formed in the spring receiving hole 263.
Accordingly, the second spring 270 biases the second slider 260 in a direction protruding from the second opening 212 a of the second storage chamber 212.

Hereinafter, the behavior of the hinge 200 when the original cover 23 is closed will be described with reference to FIGS. 18, 23, and 24.
In the present embodiment, 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, the rotation angle θ of the original press plate 23 (the original press plate with respect to the main body 22). The rotation angle θ of the original 23 is “0 °”, and the original pressure plate 23 is increased so that the rotation angle θ increases (the rotation angle θ becomes positive) when the original pressure plate 23 rotates in the opening direction. Is defined (see FIG. 18).

In the present embodiment, when the rotation angle θ of the document crimping plate 23 is 35 ° or more (θ ≧ 35 °), the document crimping plate 23 belongs to the “free stop region”, and the rotation angle θ of the document crimping plate 23 is. Is less than 35 ° (0 ° ≦ θ <35 °), the original cover 23 belongs to the “falling region”.

The “free stop area” in the present embodiment includes (A2) “rotational force (moment) acting on the rotation member 220 around the rotation pin 230 due to the weight of the original cover 23” and (B2) “ This is a region where the rotational force (moment) acting on the rotational member 220 around the rotational pin 230 due to the biasing force of the first spring 250 is balanced.

When the original cover 23 belongs to the “free stop region”, the first cam portion 221 a of the rotating member 220 comes into contact with the contact surface 241 a of the contact portion 241 of the first slider 240.
Further, when the original cover 23 belongs to the “free stop area”, the second cam portion 221 b of the rotating member 220 is separated from the second slider 260 (does not contact the second slider 260).

When the original cover 23 is rotated in the closing direction while the original cover 23 belongs to the “free stop area”, the rotational force (A2) increases.
On the other hand, when the original cover 23 is rotated in the closing direction while the original cover 23 belongs to the “free stop area”, the case member 210 rotates clockwise with respect to the rotating member 220 as viewed from the right side. The contact portion between the first cam portion 221a of the rotating member 220 and the contact surface 241a of the contact portion 241 of the first slider 240 changes, and the first slider 240 is immersed in the first storage chamber 211. Move in the direction.
When the first slider 240 moves in the direction of immersing into the first storage chamber 211, the first spring 250 is compressed (the overall length of the first spring 250 is reduced), and the biasing force of the first spring 250 is increased. And the rotational force of (B2) increases.
As a result, when the document crimping plate 23 belongs to the “free stop region”, the rotational force (A2) and the rotational force (B2) are balanced even if the rotation angle θ of the document crimping plate 23 changes. More precisely, when the original cover 23 belongs to the “free stop region”, the rotational force (A2) and the rotational force (B2) are balanced even if the rotation angle θ of the original cover 23 changes. The shapes of the first cam portion 221a and the contact portion 241 are set in advance.
Therefore, when the operator releases his / her hand from the original cover 23 when the original cover 23 belongs to the “free stop area”, the rotation angle θ of the original cover 23 is maintained.

The “falling area” in the present embodiment is an area where the rotational force of (A2) is larger than the rotational force of (B2).
When the operator releases his / her hand from the original pressure plate 23 when the original pressure plate 23 belongs to the “falling area”, the original pressure plate 23 has its own weight (strictly speaking, the rotational force of (A2) and the rotation of (B2). It rotates in the closing direction by the difference between the force and the force.

When the original cover 23 belongs to the “falling region”, the first cam portion 221 a of the rotating member 220 comes into contact with the contact surface 241 a of the contact portion 241 of the first slider 240.
However, when the original cover 23 belongs to the “falling region”, the position of the first slider 240 relative to the case member 210 does not change even if the rotation angle θ of the original cover 23 changes. More precisely, when the original cover 23 belongs to the “falling region”, the first cam portion prevents the position of the first slider 240 relative to the case member 210 from changing even if the rotation angle θ of the original cover 23 changes. The shapes of the 221a and the contact portion 241 are set in advance.
As a result, when the original cover 23 belongs to the “falling region”, the rotational force in (B2) is substantially zero, and the rotational force in (A2) is larger than the rotational force in (B2).

When the document crimping plate 23 belongs to the “falling region”, the second cam portion 221 b of the rotating member 220 contacts the contact surface 261 of the second slider 260.
Therefore, when the original cover 23 is rotated in the closing direction while the original cover 23 belongs to the “falling area”, the case member 210 rotates clockwise with respect to the rotating member 220 in the right side view, The contact portion between the second cam portion 221 b of the rotating member 220 and the contact surface 261 of the second slider 260 changes, and the second slider 260 moves in the direction of immersing into the second storage chamber 212.

When the second slider 260 moves in the direction of immersing into the second storage chamber 212, the second slider 260 has a contact portion between the outer peripheral surface of the second slider 260 and the inner peripheral surface of the second storage chamber 212. A resistance force due to the viscous resistance of the applied grease acts.
Accordingly, when the original cover 23 belongs to the “falling region”, a part of the rotational force (A2) is offset by the resistance force due to the viscous resistance of the grease, and the speed at which the original cover 23 rotates in the closing direction. Becomes slower (relaxed).
As a result, the original cover 23 is softly in contact with the upper surface of the main body 22, so that the original cover 23 is closed gently and reliably.

When the operator holds the document crimping plate 23 by hand and rotates the document crimping plate 23 in the opening direction, the second slider 260 resists the viscous resistance of grease by the urging force of the second spring 270. Since it moves in a direction protruding from the second opening 212 a, when the document crimping plate 23 belongs to the “falling region”, “the second cam portion 221 b of the rotating member 220 contacts the contact surface 261 of the second slider 260. State "is maintained.

As described above, the hinge 200 is
A hinge for connecting the document pressing plate 23 to the main body 22 so as to be openable and closable;
A case member 210 which is formed with a first storage chamber 211 having a first opening 211a and a second storage chamber 212 having a second opening 212a and which is fixed to the document crimping plate 23 of the multifunction device 21;
A rotating member 220 fixed to the main body 22 of the multi-function device 21 and rotatably connected to the case member 210;
A first slider which is accommodated in the first accommodation chamber 211 and is movable in a direction protruding from the first opening 211a and a direction immersing in the first accommodation chamber 211 while contacting the inner peripheral surface of the first accommodation chamber 211 240,
A first spring 250 housed in the first housing chamber 211 and biasing the first slider 240 in a direction protruding from the first opening 211a;
A second slider accommodated in the second accommodation chamber 212 and movable in a direction protruding from the second opening 212a and a direction immersing in the second accommodation chamber 212 while contacting the inner peripheral surface of the second accommodation chamber 212 260,
A second spring 270 housed in the second housing chamber 212 and biasing the second slider 260 in a direction protruding from the second opening 212a;
Comprising
The rotating member 220 is formed with a first cam portion 221a that contacts the first slider 240 (the contact surface 241a of the contact portion 241) and also contacts the second slider 260 (the contact surface 261). A second cam portion 221b is formed,
Grease is disposed in the gap between the second slider 260 and the inner peripheral surface of the second storage chamber 212.
With this configuration, the original cover 23 can be closed gently and reliably.

Similarly to the hinge 100 shown in FIG. 1, the hinge 200 moves relative to the case member 210 when the document pressing plate 23 of the multi-function peripheral 21 rotates in the “falling area” (in the “falling area”). The amount of movement of the second slider 260 per rotation angle is larger than the amount of movement of the first slider 240 relative to the case member 210 per rotation angle.
With this configuration, the second slider 260 moves more than the first slider 240 in a state in which the original cover 23 belongs to the “falling region”, and the inside of the second slider 260 and the second storage chamber 212. It is possible to effectively use the resistance force caused by the viscous resistance of the grease disposed in the gap with the peripheral surface as a force that cancels a part of the rotational force of (A2).

In the present embodiment, when the rotation angle θ of the original cover 23 becomes small with the original cover 23 belonging to the “falling region”, the second cam portion 221 b is substantially upward relative to the case member 210. Moving.
At this time, the second cam portion 221b is relatively gently inclined with respect to the moving direction of the second cam portion 221b with respect to the case member 210 (an angle that is not perpendicular to the relative moving direction of the second cam portion 221b with respect to the case member 210 but is nearly perpendicular). Since the contact surface 261 contacts the second cam portion 221b, the second slider 260 moves forward in a direction substantially perpendicular to the relative movement direction of the second cam portion 221b with respect to the case member 210. To do.
With this configuration, in the state where the original cover 23 belongs to the “falling region”, the movement amount of the second slider 260 relative to the case member 210 is set to be larger than the relative movement amount of the second cam portion 221b relative to the case member 210. The resistance force caused by the viscous resistance of the grease disposed in the gap between the second slider 260 and the inner peripheral surface of the second storage chamber 212 can be set to a part of the rotational force (A2). It can be used more effectively as a canceling force.

In this embodiment, guide grooves 262 a, 262 b, 262 c, 262 d, 262 e, 262 f are formed on the outer peripheral surface of the second slider 260, and guide protrusions 212 b, 212 b... Are formed on the inner peripheral surface of the second storage chamber 212. Then, these are slidably engaged and grease is applied to these gaps (the grease is disposed).
By configuring in this way, the area where the outer peripheral surface of the second slider 260 and the inner peripheral surface of the second storage chamber 212 come into contact with each other is increased, and as a result, when the second slider 260 moves relative to the case member 210. The amount of grease to be sheared can be increased, and the resistance force resulting from the viscous resistance of the grease can be used more effectively as a force that cancels a part of the rotational force of (A2).

As shown in FIG. 5, in the case of the hinge 100, the first opening 118 a and the second opening 119 a of the case member 110 that are rotatably connected to the rotation member 120 by the rotation pin 130 are the periphery of the rotation pin 130. They are arranged side by side (on a circumference centered on the axis (center line) of the rotation pin 130). Further, the first cam portion 121 b and the second cam portion 121 c of the rotation member 120 that are rotatably connected to the case member 110 by the rotation pin 130 are arranged side by side in the circumferential direction of the rotation pin 130.

On the other hand, as shown in FIGS. 23 and 24, in the case of the hinge 200, the first opening portion 211a and the second opening portion of the case member 210 that are rotatably connected to the rotating member 220 by the rotating pin 230. 212 a is arranged side by side in the axial direction (longitudinal direction) of the rotation pin 230. Further, the first cam portion 221 a and the second cam portion 221 b of the rotation member 220 that are rotatably connected to the case member 210 by the rotation pin 230 are arranged side by side in the axial direction (longitudinal direction) of the rotation pin 230. Is done.

(Α) the first opening and the second opening are arranged side by side in the circumferential direction of the rotation shaft, and the first cam portion and the second cam portion are arranged in the circumferential direction of the rotation shaft; There are the following differences between the case where the first opening and the second opening are arranged side by side in the axial direction of the rotation shaft and the first cam portion and the second cam portion are arranged in the axial direction of the rotation shaft. .

First, in the case of (β), the range of the rotation angle of the second wing member relative to the first wing member (the rotation angle of the second connection object relative to the first connection object is greater than in the case of (α). Range), that is, it is easy to set a large difference between the upper limit value and the lower limit value of the rotation angle. In the case of (α), the overlapping portion of the first cam portion and the second cam portion tends to increase as the range of the rotation angle of the second wing member relative to the first wing member is set to be larger. As a result, restrictions on designing the hinge become severe as a result. In the case of (β), the first cam portion and the second cam portion are easily and clearly defined in the axial direction of the rotation shaft. Because it is possible to separate.
Secondly, (α) has an advantage that the hinge can be easily miniaturized in the axial direction of the rotation shaft, compared with (β).
Therefore, it is desirable to appropriately select which one of (α) and (β) is adopted according to the above-described difference in operational effects or the use of the hinge.

In this embodiment, guide protrusions 212b, 212b,... Are formed on the inner peripheral surface of the second storage chamber 212 of the case member 210, and guide grooves 262a, 262b, 262c, 262d, 262e are formed on the outer peripheral surface of the second slider 260. -By forming 262f, the area of the contact portion between the outer peripheral surface of the second slider 260 and the inner peripheral surface of the second storage chamber 212 is increased, and as a result, the gap between the second slider 260 and the second storage chamber 212 is increased. It is possible to more effectively use the resistance force caused by the viscous resistance of the grease disposed in the position as a force that cancels a part of the rotational force of (A2).

In the present embodiment, in the “falling region”, a “resisting force of the original pressure plate 23 is applied to the rotating member 220 due to the resistance force caused by the viscous resistance of the grease disposed in the gap between the second slider 260 and the second storage chamber 212. A part of the “rotational force in the closing direction (rotational force of (A2))” is offset, but the present invention is not limited to this.
For example, by further narrowing the gap between the second slider 260 and the second storage chamber 212 (making it narrower than when grease is disposed), the second slider 260 and the second storage chamber 212 in the “falling region” A frictional force may be generated in the gap (abutting portion), and a part of the “rotating force in the direction of closing the document pressing plate 23” acting on the rotating member 220 may be canceled out.

In the present embodiment, of the contact portion between the second cam portion 221b and the second slider 260, the contact surface of the second cam portion 221b is a curved surface protruding upward (curved upward curved surface), and the second slider The contact surface 261 at 260 is generally flat, but the present invention is not limited to this.
For example, as shown in FIG. 29, the contact surface of the second cam portion 221b of the contact portion of the second cam portion 221b and the second slider 260 is substantially flat, and the contact surface 266 of the second slider 260 is substantially flat. May be a curved surface.
That is, when the “second connection object is rotated in the“ fall region ”(within the“ fall region ”), the movement amount of the second slide member relative to the first wing member per rotation angle is the first. There are a plurality of combinations of the shapes of the second cam portion and the second slide member that satisfy the requirement that “the displacement per rotation angle of the first slide member relative to the wing member is larger”, and an appropriate selection is made from these combinations. Is possible.

Hereinafter, the hinge 300 which is the third embodiment of the hinge according to the present invention will be described with reference to FIGS. 30 to 41.

As shown in FIG. 30, the hinge 300 connects the document pressing plate 33 to the main body 32 of the multi-function device 31 in a rotatable manner.
The multifunction machine 31 is an embodiment of office equipment. The multi-function machine 31 includes a main body 32 and a document pressing plate 33.
The basic configurations and functions of the multifunction machine 31, the main body 32, and the original cover plate 33 are substantially the same as those of the multi function machine 11, the main body 12, and the original cover plate 13 shown in FIG.

31 to 36, the hinge 300 includes a case member 310, a rotating member 320, a rotating pin 330, a first slider 340, a first spring 350, a second slider 360, and a second spring 370.

Case member 310 is an embodiment of the first wing member according to the present invention.
The case member 310 of this embodiment is made of resin and is manufactured by injection molding.
As shown in FIG. 37, the case member 310 has a front surface portion 311, a rear surface portion 312, a left side surface portion 313, a right side surface portion 314, and a bottom surface portion 315.

The front surface portion 311, the rear surface portion 312, the left side surface portion 313, the right side surface portion 314, and the bottom surface portion 315 are portions forming the front surface, rear surface, left side surface, right side surface, and bottom surface of the case member 310, respectively.
In the present embodiment, the front surface portion 311, the rear surface portion 312, the left side surface portion 313, and the right side surface portion 314 are elongated and truncated pyramid shaped plates that are long in the vertical direction and slightly tapered downward, and the bottom surface portion 315 has a generally square shape. It is a board.
The left end portion of the front surface portion 311 is connected to the front end portion of the left side surface portion 313, and the right end portion of the front surface portion 311 is connected to the front end portion of the right side surface portion 314.
The left end portion of the rear surface portion 312 is connected to the rear end portion of the left side surface portion 313, and the right end portion of the rear surface portion 312 is connected to the rear end portion of the right side surface portion 314.
The front end portion, rear end portion, left end portion and right end portion of the bottom surface portion 315 are connected to the lower end portion of the front surface portion 311, the lower end portion of the rear surface portion 312, the lower end portion of the left side surface portion 313 and the lower end portion of the right side surface portion 314, respectively. .
Therefore, the case member 310 forms a substantially rectangular parallelepiped box with an upper surface (ceiling surface) opened vertically, and a space opened upward from the case member 310 is formed inside the case member 310.
The upper end portion of the left side surface portion 313 and the upper end portion of the right side surface portion 314 protrude upward from the upper end portion of the front surface portion 311 and the upper end portion of the rear surface portion 312.
A through hole 313a is formed at a position that becomes the upper end portion and the rear end portion of the left side surface portion 313, and a through hole 314a is formed at a position that becomes the upper end portion and rear end portion of the right side surface portion 314.

The main storage chamber 316 is an embodiment of the main storage chamber according to the present invention. The main storage chamber 316 is a space (a space surrounded by the front surface portion 311, the rear surface portion 312, the left side surface portion 313, the right side surface portion 314 and the bottom surface portion 315) formed inside the case member 310.
The upper part of the main storage chamber 316 is opened, and the opened part forms a main opening 316a. That is, the main storage chamber 316 has a main opening 316a. The main opening 316a is an embodiment of the main opening according to the present invention.

In the present embodiment, the case member 310 is fixed to the main body 32 by fitting the case member 310 into a hole (not shown) having a substantially square shape in plan view formed at the rear end portion of the upper surface of the main body 32 (see FIG. 30).

The rotating member 320 is an embodiment of the second wing member according to the present invention.
The rotating member 320 of the present embodiment is made of resin and is manufactured by injection molding.
As shown in FIGS. 35, 36 and 38, the rotating member 320 has a body portion 321 and an attachment portion 322.

The body portion 321 is a portion that forms the body of the rotating member 320. The body portion 321 of the present embodiment is a massive portion in which three smooth curved surfaces are formed side by side in the left-right direction.
A through hole 321 a is formed in the body portion 321. The through-hole 321a is a hole penetrating from the rear part of the left side surface of the body part 321 to the rear part of the right side surface.
The body portion 321 is formed with first cam portions 321b and 321b and a second cam portion 321c.
The first cam portions 321b and 321b are an embodiment of the first cam portion according to the present invention, and the second cam portion 321c is an embodiment of the second cam portion according to the present invention.
The first cam portions 321b and 321b are portions corresponding to the curved surfaces arranged at the left end and the right end among the three curved surfaces formed in the lower portion of the body portion 321.
The second cam portion 321c is a portion corresponding to a central curved surface (a curved surface sandwiched between curved surfaces disposed at the left end and the right end) among the three curved surfaces formed at the lower portion of the body portion 321.

As shown in FIGS. 31 and 38, the attachment portion 322 is a plate-like portion having a pair of generally rectangular plate surfaces as a top surface and a bottom surface in plan view. The left and right center portions of the attachment portion 322 are connected to the upper end portion of the body portion 321, and the left end portion and the right end portion of the attachment portion 322 protrude to the left side and the right side of the body portion 321, respectively.
Through holes 322 a, 322 a, 322 a, and 322 a are formed in the left end portion and the right end portion of the attachment portion 322.

In the present embodiment, screws (not shown) are inserted into the through holes 322 a, 322 a, 322 a, and 322 a from below, and the screws are inserted into screw holes (not shown) formed at the rear end of the lower surface of the original pressure plate 33. By screwing, the rotating member 320 is fixed to the document pressing plate 33 (see FIG. 30).

The rotation pin 330 is an embodiment of the rotation shaft according to the present invention.
As shown in FIG. 32, the rotation pin 330 of the present embodiment is a metal member having a body portion 331 and a head portion 332 and having a caulking hole 331a formed at one end portion (tip portion) of the body portion 331. .
The basic configuration of the rotation pin 330 of this embodiment is substantially the same as that of the rotation pin 130 shown in FIG.
As shown in FIG. 32, by rotating the body portion 331 of the rotation pin 330 in order from the left to the through hole 313a, the through hole 321a, and the through hole 314a, the rotation member 320 is connected to the case member via the rotation pin 330. 310 is connected to the main body 32 so as to be rotatable. As a result, the document pressing plate 33 (the lower rear end portion thereof) is rotatably connected to the main body 32 (the upper rear end portion thereof).

As shown in FIG. 35, when the rotation member 320 is rotatably connected to the case member 310 via the rotation pin 330, the first cam portion 321 b is the main housing chamber 316 formed in the case member 310. Opposite the opening 316a.

The first slider 340 is an embodiment of the first slide member according to the present invention.
The first slider 340 of this embodiment is made of resin and is manufactured by injection molding.
35, 36, 39, and 40, the first slider 340 includes a main plate 341, a pair of front plates 342 and 342, a pair of rear plates 343 and 343, a left side plate 344, a right side plate 345, and a body 346. Have.

The main plate 341 is a plate-like portion having a substantially rectangular shape in plan view. The main plate 341 has a pair of plate surfaces as an upper surface and a lower surface. A pair of contact protrusions 341 a and 341 a are formed on the upper surface of the main plate 341. The pair of contact protrusions 341 a and 341 a both protrude upward from the upper surface of the main plate 341.
Of the pair of contact protrusions 341a and 341a, one contact protrusion 341a is disposed at the center of the front and rear of the upper surface of the main plate 141 and the left half, and the other contact protrusion 341a is the front and rear of the upper surface of the main plate 341. It arrange | positions in the position used as a center part and a right half part.
Accordingly, the pair of contact protrusions 341a and 341a are arranged on the upper surface of the main plate 341 with a gap in the left-right direction.

Each of the pair of front plates 342 and 342 is a plate-like portion having a substantially rectangular shape in plan view. Each of the pair of front plates 342 and 342 has a pair of plate surfaces as a front surface and a rear surface.
Of the pair of front plates 342 and 342, the upper end of one front plate 342 (left front plate 342) is connected to the front end and left half of the main plate 341, and the other front plate 342 (right side) The upper end portion of the front plate 342) is connected to the front end portion and the right half portion of the main plate 341.

Each of the pair of rear plates 343 and 343 is a plate-like portion having a substantially rectangular shape in plan view. Each of the pair of rear plates 343 and 343 has a pair of plate surfaces as a front surface and a rear surface.
Of the pair of rear plates 343 and 343, the upper end of one rear plate 343 (left rear plate 343) is connected to the rear end portion and the left half of the main plate 141, and the other rear plate 343 ( The upper end of the right rear plate 343) is connected to the rear half and the right half of the main plate 341.

The left side plate 344 is a plate-like portion that is substantially rectangular in a side view. The left side plate 344 has a pair of plate surfaces as a left surface and a right surface.
The upper end of the left side plate 344 is connected to the left end of the main plate 341, the front end of the left side plate 344 is connected to the left end of one front plate 342, and the rear end of the left side plate 344 is one rear plate 343. It is connected to the left end of

The right side plate 345 is a plate-like portion that is substantially rectangular in side view. The right side plate 345 has a pair of plate surfaces as a left side and a right side.
The upper end portion of the right side plate 345 is connected to the right end portion of the main plate 341, the front end portion of the right side plate 345 is connected to the right end portion of the other front plate 342, and the rear end portion of the right side plate 345 is the other rear plate 343. It is connected to the right end of

The body 346 is a substantially cylindrical portion. The upper half of the body 346 is disposed in a space surrounded by a pair of front plates 342 and 342, a pair of rear plates 343 and 343, a left side plate 344 and a right side plate 345, and the upper end of the body 346 is the center of the lower surface of the main plate 341. It is connected to.
The lower half of the body 346 protrudes downward from the space surrounded by the pair of front plates 342 and 342, the pair of rear plates 343 and 343, the left side plate 344 and the right side plate 345.

As shown in FIGS. 36 and 39, the first slider 340 is formed with a sub-accommodating chamber 347.
The sub housing chamber 347 is an embodiment of the sub housing chamber according to the present invention. The sub-accommodating chamber 347 of the present embodiment is a space that is formed across the body 346 and the main plate 341 and is long in the vertical direction.
The sub-accommodating chamber 347 opens at the center of the upper surface of the main plate 341 (the portion sandwiched between the pair of contact protrusions 341a and 341a), and the opened portion forms a sub-opening portion 347a. That is, the sub-accommodating chamber 347 has a sub-opening 347a. The sub opening 347a is an embodiment of the sub opening according to the present invention. The cross-sectional shape in plan view of the sub-accommodating chamber 347 of this embodiment is a rectangle that is long in the front-rear direction.

As shown in FIG. 36, the first slider 340 is housed in the main housing chamber 316 of the case member 310.
The first slider 340 received in the main storage chamber 316 contacts the inner peripheral surface of the main storage chamber 316.
Further, the first slider 340 accommodated in the main accommodating chamber 316 is movable in a direction protruding from the main opening 316 a and a direction immersing in the interior (back) of the main accommodating chamber 316.
More specifically, the front surfaces of the front plates 342 and 342 are slidably contacted with the rear surface of the front surface portion 311 in the vertical direction, and the rear surfaces of the rear surface plates 343 and 343 are slidable with the front surface of the rear surface portion 312 in the vertical direction. The left surface of the left side plate 344 contacts the right surface of the left side surface portion 313 so as to be slidable in the vertical direction, and the right surface of the right side plate 345 contacts the left surface of the right side surface portion 314 so as to be slidable in the vertical direction.

As shown in FIG. 36, since the sub-opening 347a of the present embodiment is disposed at the center of the upper surface of the main plate 341 of the first slider 340, the first slider 340 is accommodated in the main accommodating chamber 316 of the case member 310. The sub-opening 347a is opened upward similarly to the main opening 316a.

The first spring 350 is an embodiment of the first biasing member according to the present invention.
The first spring 350 of the present embodiment is a metal winding spring, and is a compression spring (a spring used in a compressed state).
As shown in FIGS. 35 and 36, the first spring 350 is accommodated in the main accommodating chamber 316 of the case member 310.
One end (lower end) of the first spring 350 accommodated in the main accommodating chamber 316 contacts the upper surface of the bottom surface portion 315, and the other end (upper end) of the first spring 350 is in contact with the body 346 of the first slider 340. It is fitted and contacts the lower surface of the main plate 341.
Therefore, the first spring 350 urges the first slider 340 in a direction (upward in this embodiment) to protrude from the main opening 316a of the main housing chamber 316, and the pair of contact protrusions 341a. 314a contacts the first cam portions 321b and 321b of the rotation member 320, respectively.
As a result, the urging force of the first spring 350 is transmitted to the rotating member 320 via the first slider 340, so that the rotating member 320 rotates counterclockwise with respect to the case member 310 when viewed from the right side. The original cover 33 is urged in the opening direction with respect to the main body 32 (see FIG. 30).

The second slider 360 is an embodiment of the second slide member according to the present invention.
The second slider 360 of this embodiment is made of resin and is manufactured by injection molding.
As shown in FIG. 41, the second slider 360 is a plate-like member extending in the vertical direction.

A contact surface 361 is formed on the upper front end of the second slider 360. The abutting surface 361 is a front-declining slope connected to the upper end portion of the front surface of the second slider 360 and the upper end portion of the rear surface of the second slider 360, with respect to the front surface of the second slider 360 and the lower end surface of the second slider 360. (They are not parallel to either the front surface of the second slider 360 or the lower end surface of the second slider 360).

A spring receiving hole 362 is formed in the second slider 360. The spring receiving hole 362 is a hole that is open in the lower surface of the second slider 360 and has a circular shape in a plan sectional view.

As shown in FIG. 36, the second slider 360 is accommodated in the sub-accommodating chamber 347 of the first slider 340.
The second slider 360 housed in the sub housing chamber 347 comes into contact with the inner peripheral surface of the sub housing chamber 347.
Further, the second slider 360 accommodated in the sub-accommodating chamber 347 is movable in a direction protruding from the sub-opening portion 347a and a direction of immersing in the interior (back part) of the sub-accommodating chamber 347.

Grease is applied to the contact portion between the outer peripheral surface of the second slider 360 (front surface, rear surface, left surface and right surface of the second slider 360) and the inner peripheral surface of the sub-accommodating chamber 347. In other words, the grease is disposed in the gap between the second slider 360 and the inner peripheral surface of the sub-accommodating chamber 347.

The grease disposed in the gap between the second slider 360 and the inner peripheral surface of the sub-accommodating chamber 347 is an embodiment of the viscous body according to the present invention.

The second spring 370 is an embodiment of the second urging member according to the present invention.
The second spring 370 of this embodiment is a metal winding spring and is a compression spring (a spring used in a compressed state).
As shown in FIG. 36, the second spring 370 is housed in the sub housing chamber 347 of the first slider 340.
One end (lower end) of the second spring 370 accommodated in the sub-accommodating chamber 347 contacts the bottom surface of the sub-accommodating chamber 347, and the other end (upper end) of the second spring 370 is accommodated in the spring receiving hole 362. And abuts against the back surface (ceiling surface) of the spring receiving hole 362.
Accordingly, the second spring 370 biases the second slider 360 in a direction (upward in this embodiment) protruding from the sub opening 347a of the sub housing chamber 347.

Hereinafter, the behavior of the hinge 300 when the original cover 33 is closed will be described with reference to FIGS. 30, 35, and 36.
In the present embodiment, when the original pressure plate 33 is completely closed, that is, when the lower surface of the original pressure plate 33 is in contact with the upper surface of the main body 32, the rotation angle θ of the original pressure plate 33 (the original pressure plate relative to the main body 32). The rotation angle θ of 33 is “0 °”, and the original pressure plate 33 is increased so that the rotation angle θ increases (the rotation angle θ becomes positive) when the original pressure plate 33 is rotated in the opening direction. Is defined (see FIG. 30).

In the present embodiment, when the rotation angle θ of the original cover 33 is 18 ° or more (θ ≧ 18 °), the original cover 33 belongs to the “free stop area”, and the rotation angle θ of the original cover 33 is as follows. Is less than 18 ° (0 ° ≦ θ <18 °), the original cover 33 belongs to the “falling region”.

The “free stop area” in the present embodiment includes (A3) “rotational force (moment) acting on the rotation member 320 around the rotation pin 330 due to the weight of the original cover 33” and (B3) “ This is a region where the rotational force (moment) acting on the rotation member 320 around the rotation pin 330 due to the biasing force of the first spring 350 is balanced.

When the document pressing plate 33 belongs to the “free stop region”, the first cam portions 321 b and 321 b of the rotating member 320 abut on the abutting protrusions 341 a and 341 a of the main plate 341 of the first slider 340.
When the document pressing plate 33 belongs to the “free stop area”, the second cam portion 321 c of the rotating member 320 is separated from the second slider 360 (not in contact with the second slider 360).

When the original cover 33 is rotated in the closing direction while the original cover 33 belongs to the “free stop area”, the rotational force (A3) increases.
On the other hand, when the document pressing plate 33 rotates in the closing direction while the document pressing plate 33 belongs to the “free stop area”, the rotating member 320 rotates clockwise with respect to the case member 310 in the right side view. The contact portions between the first cam portions 321b and 321b of the rotating member 320 and the contact protrusions 341a and 341a of the main plate 341 of the first slider 340 change, and the first slider 340 is immersed in the main housing chamber 316. Move in the direction you want.
As the first slider 340 moves in the direction of immersing into the main housing chamber 316, the first spring 350 is compressed (the overall length of the first spring 350 is reduced), and the biasing force of the first spring 350 is increased. , (B3) increases in rotational force.
As a result, when the original cover 33 belongs to the “free stop region”, the rotational force (A3) and the rotational force (B3) are balanced even if the rotation angle θ of the original cover 33 changes. More precisely, when the original cover 33 belongs to the “free stop region”, the rotational force (A3) and the rotational force (B3) are balanced even if the rotation angle θ of the original cover 33 changes. The shapes of the first cam portions 321b and 321b and the contact protrusions 341a and 341a are preset.
Therefore, when the operator releases his / her hand from the original cover 33 when the original cover 33 belongs to the “free stop area”, the rotation angle θ of the original cover 33 is maintained.

The “falling region” in the present embodiment is a region where the rotational force of (A3) is larger than the rotational force of (B3).
When the operator releases his / her hand from the original pressure bonding plate 33 when the original pressure bonding plate 33 belongs to the “falling area”, the original pressure bonding plate 33 has its own weight (strictly speaking, the rotational force of (A3) and the rotation of (B3). It rotates in the closing direction by the difference between the force and the force.

When the document pressing plate 33 belongs to the “falling region”, the first cam portions 321 b and 321 b of the rotating member 320 abut on the abutting protrusions 341 a and 341 a of the main plate 341 of the first slider 340.
However, when the original cover 33 belongs to the “falling region”, the position of the first slider 340 relative to the case member 310 does not change even if the rotation angle θ of the original cover 33 changes. More precisely, when the original pressing plate 33 belongs to the “falling region”, the first cam portion prevents the position of the first slider 340 from changing with respect to the case member 310 even if the rotation angle θ of the original pressing plate 33 changes. The shapes of 321b and 321b and the contact protrusions 341a and 341a are preset.
As a result, when the original cover 33 belongs to the “falling region”, the rotational force in (B3) is substantially zero, and the rotational force in (A3) is larger than the rotational force in (B3).

When the document pressing plate 33 belongs to the “falling region”, the second cam portion 321 c of the rotating member 320 contacts the contact surface 361 of the second slider 360.
Therefore, when the original cover 33 is rotated in the closing direction while the original cover 33 belongs to the “falling area”, the rotating member 320 is rotated clockwise with respect to the case member 310 in the right side view, The contact portion between the second cam portion 321c of the rotating member 320 and the contact surface 361 of the second slider 360 changes, and the second slider 360 is immersed in the sub-accommodating chamber 347 (in this embodiment, Move down).

When the second slider 360 moves in the direction of immersing into the sub-accommodating chamber 347, the second slider 360 is applied to the contact portion between the outer peripheral surface of the second slider 360 and the inner peripheral surface of the sub-accommodating chamber 347. Resistive force due to the viscous resistance of grease acts.
Therefore, when the original cover 33 belongs to the “falling region”, a part of the rotational force (A3) is offset by the resistance force due to the viscous resistance of the grease, and the speed at which the original cover 33 rotates in the closing direction. Becomes slower (relaxed).
As a result, the original cover 33 softly contacts the upper surface of the main body 32, so that the original cover 33 is gently and reliably closed.

When the operator holds the document pressing plate 33 by hand and rotates the document pressing plate 33 in the opening direction, the second slider 360 resists the viscous resistance of grease by the urging force of the second spring 370. Since it moves in a direction protruding from the sub-opening 347a (upward in this embodiment), when the original cover 33 belongs to the “falling region”, “the second cam portion 321c of the rotating member 320 is The state of being in contact with the contact surface 361 is maintained.

As described above, the hinge 300 is
A hinge for connecting the document pressing plate 33 to the main body 32 so as to be openable and closable;
A case member 310 in which a main storage chamber 316 having a main opening 316a is formed and fixed to the main body 32 of the multi-function device 31;
A rotating member 320 fixed to the document pressing plate 33 of the multifunction machine 31 and rotatably connected to the case member 310;
A sub-accommodating chamber 347 having a sub-opening 347a is formed, accommodated in the main accommodating chamber 316, in a direction protruding from the main opening 316a while contacting the inner peripheral surface of the main accommodating chamber 316, and inside the main accommodating chamber 316. A first slider 340 movable in an immersive direction;
A first spring 350 housed in the main housing chamber 316 and biasing the first slider 340 in a direction protruding from the main opening 316a;
A second slider 360 accommodated in the sub-accommodating chamber 347 and movable in a direction protruding from the sub-opening 347a and a direction of immersing in the sub-accommodating chamber 347 while contacting the inner peripheral surface of the sub-accommodating chamber 347;
A second spring 370 housed in the sub-accommodating chamber 347 and biasing the second slider 360 in a direction protruding from the sub-opening 347a;
Comprising
The rotating member 320 is formed with first cam portions 321b and 321b that contact the first slider 340 and a second cam portion 321c that contacts the second slider 360.
Grease is disposed in the gap between the second slider 360 and the inner peripheral surface of the sub-accommodating chamber 347.
With this configuration, it is possible to close the original cover 33 gently and reliably.

Further, when the document pressing plate 33 of the multi-function peripheral 31 is rotated in the state of being in the “falling area” (within the “falling area”), the hinge 300 is per rotation angle of the second slider 360 relative to the first slider 340. Is larger than the amount of movement of the first slider 340 per rotation angle with respect to the case member 310.
With this configuration, the second slider 360 moves more than the first slider 340 in a state where the original cover 33 belongs to the “falling region”, and the inner periphery of the second slider 360 and the sub-accommodating chamber 347. It is possible to effectively use the resistance force caused by the viscous resistance of the grease disposed in the gap with the surface as a force that cancels a part of the rotational force of (A3).

In this embodiment, the case member 310 is fixed to the main body 32 and the rotating member 320 is fixed to the original pressure plate 33 so that the hinge 300 rotatably connects the original pressure plate 33 to the main body 32. Is not limited to this.
For example, the hinge 300 may be pivotally connected to the main body 32 by fixing the case member 310 to the original pressing plate 33 and fixing the rotating member 320 to the main body 32. That is, any one of the first wing member and the second wing member according to the present invention may be fixed to the first connection object and the other may be fixed to the second connection object.

In the present embodiment, in the “falling region”, the resistance force caused by the viscous resistance of the grease disposed in the gap between the second slider 360 and the sub-accommodating chamber 347 acts on the rotating member 320. A part of the rotational force in the direction (rotational force of (A3)) "is canceled out, but the present invention is not limited to this.
For example, by further narrowing the gap between the second slider 360 and the sub-accommodating chamber 347 (smaller than when grease is disposed), the gap between the second slider 360 and the sub-accommodating chamber 347 in the “fall region”. A frictional force may be generated at the (contact portion), and a part of the “rotational force in the direction of closing the document pressing plate 33” acting on the rotating member 320 may be canceled out.

Hereinafter, a hinge 400, which is a fourth embodiment of the hinge according to the present invention, will be described with reference to FIGS.

As shown in FIG. 42, the hinge 400 connects the original cover 43 to the main body 42 of the multifunction machine 41 so as to be rotatable.
The multifunction machine 41 is an embodiment of office equipment. The multi-function device 41 includes a main body 42 and a document pressing plate 43.
The basic configurations and functions of the multifunction machine 41, the main body 42, and the original document crimping plate 43 are substantially the same as those of the multifunction machine 11, the main body 12, and the original document crimping plate 13 shown in FIG.

43 to 48, the hinge 400 includes a first case member 410, a second case member 420, a rotation pin 430, a first slider 440, a first spring 450, a second slider 460, and a second spring 470. To do.

The first case member 410 is an embodiment of the first wing member according to the present invention.
The first case member 410 of this embodiment is made of resin and is manufactured by injection molding.
As shown in FIGS. 43, 44 and 49, the first case member 410 is a substantially thin rectangular parallelepiped member.
As shown in FIG. 49, a first storage chamber 411 is formed inside the first case member 410.

The first storage chamber 411 is an embodiment of the first storage chamber according to the present invention. The first storage chamber 411 is a space formed in the first case member 410 and at a position corresponding to the right half.
The first storage chamber 411 is a base end portion of the first case member 410 (an end portion closer to a position where the first case member 410 and the second case member 420 are pivotably connected to each other. Corresponding to the upper end portion), and the opened portion forms a first opening portion 411a. That is, the first storage chamber 411 has a first opening 411a. The first opening 411a is an embodiment of the first opening according to the present invention.
Guide grooves 411 b and 411 b are formed on the inner peripheral surface of the first storage chamber 411. The guide grooves 411b and 411b extend from the first opening 411a of the first storage chamber 411 toward the back of the first storage chamber 411 (from the base end portion of the first case member 410 toward the distal end portion (lower end portion)). It is a groove.

A second cam portion 412 is formed on the first case member 410.
The second cam portion 412 is an embodiment of the second cam portion according to the present invention. The second cam portion 412 of the present embodiment is a massive portion that protrudes upward from a position that becomes the left half portion and the front end portion of the base end portion (upper end portion) of the first case member 410.

Protrusions 413, 414, 415, and 416 are formed at the base end of the first case member 410.
The protrusions 413, 414, 415, and 416 of this embodiment are protrusions that protrude from the base end portion of the first case member 410. The protrusion 413 is disposed on the right side of the first opening 411 a of the first storage chamber 411. The protrusion 414 is disposed on the left side of the first opening 411 a of the first storage chamber 411. The protruding portion 415 is disposed at a position on the left side of the protruding portion 414 and on the right rear side of the second cam portion 412. The protruding portion 416 is disposed at a position on the left side of the protruding portion 415 and on the left rear side of the second cam portion 412.
A through hole 413 a is formed in the protrusion 413, a through hole 414 a is formed in the protrusion 414, a through hole 415 a is formed in the protrusion 415, and a through hole 416 a is formed in the protrusion 416.
The through holes 413a, 414a, 415a, and 416a are arranged in a straight line, and the combination of the through holes 413a, 414a, 415a, and 416a substantially penetrates from the left side surface to the right side surface of the first case member 410.
The longitudinal direction (axial direction) of the through holes 413a, 414a, 415a, 416a is parallel to the left-right direction.

A protrusion 417 is formed on the first case member 410. The protrusion 417 is a plate-like part.
In the present embodiment, one end of the protrusion 417 is connected to the right side of the first case member 410, and the other end of the protrusion 417 protrudes to the right of the right side of the first case member 410.
A through hole 417a is formed in the protruding portion 417. The through hole 417a is a hole that penetrates the pair of plate surfaces of the protrusion 417.

In the present embodiment, a screw (not shown) is inserted into the through hole 417a, and the screw is screwed into a screw hole (not shown) formed in the main body 42, whereby the first case member 410 is attached to the main body 42. It is fixed (see FIG. 42).

The second case member 420 is an embodiment of the second wing member according to the present invention.
The second case member 420 of the present embodiment is made of resin and is manufactured by injection molding.
As shown in FIGS. 43, 46 and 50, the second case member 420 is a substantially thin rectangular parallelepiped member.
As shown in FIG. 50, a second housing chamber 421 is formed inside the second case member 420.

The second storage chamber 421 is an embodiment of the second storage chamber according to the present invention. The second storage chamber 421 corresponds to the inside of the second case member 420 and the right half (when the second case member 420 is rotatably connected to the first case member 410, the second housing chamber 421 corresponds to the right half of the first case member 410). It is a space formed at a position to be a part to be).
The second storage chamber 421 is open at the base end portion of the second case member 420 (the end portion closer to the position where the first case member 410 and the second case member 420 are rotatably connected), The opened portion forms the second opening 421a. That is, the second storage chamber 421 has a second opening 421a. The second opening 421a is an embodiment of the second opening according to the present invention.
Guide grooves 421 b and 421 b are formed on the inner peripheral surface of the second storage chamber 421. The guide grooves 421b and 421b are grooves extending from the second opening 421a of the second storage chamber 421 toward the back of the second storage chamber 421 (from the base end portion of the second case member 420 toward the distal end portion). .

A first cam portion 422 is formed on the second case member 420.
The first cam portion 422 is an embodiment of the first cam portion according to the present invention. The first cam portion 422 of the present embodiment is a massive portion that protrudes from the right half of the base end portion of the second case member 420.
A through hole 422a is formed in the first cam portion 422. The through hole 422a is a hole penetrating from the left end surface of the first cam portion 422 to the right end surface.

Protrusions 423, 424, 425, and 426 are formed at the base end of the second case member 420.
The protrusions 423, 424, 425, and 426 of this embodiment are all protrusions that protrude from the base end portion of the second case member 420.
More specifically, the protrusion 423 is disposed at a position on the left side of the first cam portion 422. The protrusion 424 is disposed at a position on the left side of the protrusion 423 and on the right side of the second opening 421a of the second storage chamber 421. The protrusion 425 is disposed at a position on the left side of the second opening 421a of the second storage chamber 421. The protruding portion 426 is disposed at a position on the left side of the protruding portion 425 (a position that becomes the base end portion and the left end portion of the second case member 420).
A through hole 423 a is formed in the protrusion 423, a through hole 424 a is formed in the protrusion 424, a through hole 425 a is formed in the protrusion 425, and a through hole 426 a is formed in the protrusion 426.
The through holes 422a, 423a, 424a, 425a, 426a are arranged in a straight line, and the combination of the through holes 422a, 423a, 424a, 425a, 416a is substantially from the left side surface to the right side surface of the second case member 420. To penetrate.
The longitudinal direction (axial direction) of the through holes 422a, 423a, 424a, 425a, and 426a is parallel to the left-right direction.

A protrusion 427 is formed on the second case member 420. The protrusion 427 is a plate-like part.
In the present embodiment, one end portion of the protruding portion 427 is connected to the left side surface of the second case member 420, and the other end portion of the protruding portion 427 protrudes to the left side of the left side surface of the second case member 420.
Through holes 427a, 427b, and 427c are formed in the protruding portion 427. The through holes 427a, 427b, and 427c are holes that penetrate the pair of plate surfaces of the protruding portion 427.

In the present embodiment, a screw (not shown) is inserted into the through holes 427a, 427b, and 427c, and the screw is screwed into a screw hole (not shown) formed in the document crimping plate 43, whereby the second case. The member 420 is fixed to the original cover 43 (see FIG. 42).

The rotation pin 430 is an embodiment of the rotation shaft according to the present invention.
As shown in FIGS. 44 and 45, the rotation pin 430 of the present embodiment has a body portion 431 and a head portion 432, and is made of metal in which a crimping hole 431a is formed at one end portion (tip portion) of the body portion 431. It is a member.
The basic configuration of the rotation pin 430 of the present embodiment is substantially the same as that of the rotation pin 130 shown in FIG.
As shown in FIGS. 43, 45, 49, and 50, the body portion 431 of the rotation pin 430 is inserted through the through hole 426a, the through hole 416a, the through hole 425a, the through hole 424a, the through hole 415a, and the through hole 423a in order from the left. The second case member 420 is pivotally connected to the first case member 410 via the pivot pin 430 by passing through the through hole 414a, the through hole 422a, and the through hole 413a. The document pressing plate 43 (the lower rear end portion thereof) is rotatably connected to the main body 42 (the upper rear end portion thereof).

As shown in FIG. 47, when the second case member 420 is rotatably connected to the first case member 410 via the rotation pin 430, the first cam portion 422 is formed on the first case member 410. It faces the first opening 411a of the one storage chamber 411.
As shown in FIG. 48, when the second case member 420 is rotatably connected to the first case member 410 via the rotation pin 430, the second cam portion 412 is formed on the second case member 420. Opposite the second opening 421a of the second storage chamber 421.

The first slider 440 is an embodiment of the first slide member according to the present invention.
The first slider 440 of this embodiment is made of resin and is manufactured by injection molding.
As shown in FIG. 47, the first slider 440 includes a contact portion 441, guide portions 442 and 442, and a cylindrical portion 443, and a contact surface 441a is formed on the contact portion 441.
The basic configuration of the first slider 440 of the present embodiment is substantially the same as that of the first slider 240 shown in FIG.

As shown in FIG. 47, the first slider 440 is housed in the first housing chamber 411 of the first case member 410.
The first slider 440 received in the first storage chamber 411 contacts the inner peripheral surface of the first storage chamber 411. Further, the first slider 440 accommodated in the first accommodation chamber 411 protrudes from the first opening 411a (upward in the present embodiment) and enters the interior (back part) of the first accommodation chamber 411 ( In this embodiment, it can be moved downward).
More specifically, when the first slider 440 is accommodated in the first accommodating chamber 411, the four end surfaces of the thin rectangular parallelepiped portion of the contact portion 441 are the inner peripheral surfaces (four inner wall surfaces) of the first accommodating chamber 411, respectively. The guide portions 442 and 442 engage with the guide grooves 411b and 411b so as to be slidable in the vertical direction.

The first spring 450 is an embodiment of the first biasing member according to the present invention.
The first spring 450 of this embodiment is a metal winding spring, and is a compression spring (a spring used in a compressed state).
As shown in FIG. 47, the first spring 450 is housed in the first housing chamber 411 of the first case member 410.
One end of the first spring 450 accommodated in the first accommodation chamber 411 is in contact with the bottom surface of the first accommodation chamber 411, and the other end of the first spring 450 is fitted into the cylinder portion 443 of the first slider 440. At the same time, it comes into contact with the other plate surface of the contact portion 441 (the plate surface on which the two divided cylindrical projections are not stacked).
Accordingly, the first spring 450 urges the first slider 440 in a direction (upward) protruding from the first opening 411a of the first storage chamber 411, and the contact surface 441a of the contact portion 441 of the first slider 440 is It abuts on the first cam portion 422 of the second case member 420.
As a result, the urging force of the first spring 450 is transmitted to the second case member 420 via the first slider 440, so that the second case member 420 counterclockwise with respect to the first case member 410 when viewed from the right side. The original pressing plate 43 is urged in the direction of rotation, and is urged in the opening direction with respect to the main body 42 (see FIG. 42).

The second slider 460 is an embodiment of the second slide member according to the present invention.
The second slider 460 of this embodiment is made of resin and is manufactured by injection molding.
As shown in FIG. 51, the second slider 460 is formed by cutting one end of an elongated rectangular parallelepiped obliquely with respect to the longitudinal direction of the rectangular parallelepiped and extending in one of four side surfaces in the longitudinal direction of the rectangular parallelepiped. It has a shape in which (ridges) are formed.

A contact surface 461 is formed at one end of the second slider 460. The contact surface 461 is a plane that is inclined with respect to the longitudinal direction of the second slider 460 (a plane that is not perpendicular to and parallel to the longitudinal direction of the second slider 460).

Guide protrusions 462 and 462 are formed on one of the four side surfaces of the second slider 460. The guide protrusions 462 and 462 are protrusions (projections) extending in the longitudinal direction of the second slider 460.

A spring receiving hole 463 is formed in the second slider 460.
The spring receiving hole 463 is a hole that opens at the other end of the second slider 460 (the end opposite to the end where the contact surface 461 is formed).

As shown in FIG. 48, the second slider 460 is accommodated in the second accommodation chamber 421 of the second case member 420.
The second slider 460 received in the second storage chamber 421 contacts the inner peripheral surface of the second storage chamber 421. Further, the second slider 460 accommodated in the second accommodation chamber 421 is movable in a direction protruding from the second opening 421a and a direction of immersing in the interior (back part) of the second accommodation chamber 421.
More specifically, the guide protrusions 462 and 462 formed on one of the four side surfaces of the second slider 460 are slidable in the guide grooves 421b and 421b formed on the inner peripheral surface of the second storage chamber 421. (See FIG. 43).

Grease is applied to a contact portion between the outer peripheral surface of the second slider 460 and the inner peripheral surface of the second storage chamber 421. In other words, the grease is disposed in the gap between the second slider 460 and the inner peripheral surface of the second storage chamber 421 (including the gap between the guide protrusions 462 and 462 and the guide grooves 421b and 421b).
The grease disposed in the gap between the second slider 460 and the inner peripheral surface of the second storage chamber 421 is an embodiment of the viscous body according to the present invention.

The second spring 470 is an embodiment of the second urging member according to the present invention.
The second spring 470 of the present embodiment is a metal winding spring, and is a compression spring (a spring used in a compressed state).
As shown in FIG. 48, the second spring 470 is housed in the second housing chamber 421 of the second case member 420.
One end of the second spring 470 accommodated in the second accommodation chamber 421 contacts the bottom surface of the second accommodation chamber 421, and the other end of the second spring 470 is accommodated in the spring receiving hole 463 of the second slider 460. At the same time, it abuts against a step surface formed in the spring receiving hole 463.
Accordingly, the second spring 470 biases the second slider 460 in a direction protruding from the second opening 421a of the second storage chamber 421.

Hereinafter, the behavior of the hinge 400 when closing the original cover 43 will be described with reference to FIGS. 42, 47 and 48.
In the present embodiment, when the original pressure plate 43 is completely closed, that is, when the lower surface of the original pressure plate 43 is in contact with the upper surface of the main body 42, the rotation angle θ of the original pressure plate 43 (the original pressure plate relative to the main body 42). The rotation angle θ of 43 is “0 °”, and the original pressure plate 43 is increased so that the rotation angle θ increases (the rotation angle θ becomes positive) when the original pressure plate 43 is rotated in the opening direction. Is defined (see FIG. 42).

In this embodiment, when the rotation angle θ of the original cover 43 is 18 ° or more (θ ≧ 18 °), the original cover 43 belongs to the “free stop area”, and the rotation angle θ of the original cover 43 is Is less than 18 ° (0 ° ≦ θ <18 °), the original cover 43 belongs to the “falling region”.

The “free stop area” in the present embodiment is (A4) “rotational force (moment) acting on the second case member 420 around the rotation pin 430 due to the weight of the original cover 43” and (B4). This is an area where the “rotational force (moment) acting on the second case member 420 around the rotation pin 430 due to the biasing force of the first spring 450” is balanced.

When the document pressing plate 43 belongs to the “free stop region”, the first cam portion 422 of the second case member 420 abuts on the abutting surface 441a of the abutting portion 441 of the first slider 440 (see FIG. 47).
When the original cover 43 belongs to the “free stop region”, the second cam portion 412 of the first case member 410 is separated from the second slider 460 and does not contact the second slider 460 (see FIG. 48). ).

When the document pressing plate 43 belongs to the “free stop area” and the document pressing plate 43 is rotated in the closing direction, the rotational force of (A4) increases.
On the other hand, when the original pressure plate 43 is rotated in the closing direction while the original pressure plate 43 belongs to the “free stop region”, the second case member 420 rotates clockwise with respect to the first case member 410 in the right side view. The contact portion between the first cam portion 422 of the second case member 420 and the contact surface 441a of the contact portion 441 of the first slider 440 changes, and the first slider 440 moves in the first storage chamber 411. Move in the direction to immerse inside (downward).
When the first slider 440 moves in the direction of immersing in the first storage chamber 411, the first spring 450 is compressed (the total length of the first spring 450 is reduced), and the biasing force of the first spring 450 is increased. And the rotational force of (B4) increases.
As a result, when the document pressing plate 43 belongs to the “free stop region”, the rotational force (A4) and the rotational force (B4) are balanced even if the rotation angle θ of the document pressing plate 43 changes. More precisely, when the original cover 43 belongs to the “free stop region”, the rotational force (A4) and the rotational force (B4) are balanced even if the rotation angle θ of the original cover 43 changes. The shapes of the first cam portion 422 and the contact portion 441 are preset.
Therefore, when the operator releases his / her hand from the original cover 43 when the original cover 43 belongs to the “free stop area”, the rotation angle θ of the original cover 43 is maintained.

The “falling region” in the present embodiment is a region where the rotational force of (A4) is larger than the rotational force of (B4).
When the operator releases his / her hand from the original pressure plate 43 when the original pressure plate 43 belongs to the “falling area”, the original pressure plate 43 is subject to its own weight (strictly speaking, the rotational force of (A4) and the rotation of (B4). It rotates in the closing direction by the difference between the force and the force.

When the document pressing plate 43 belongs to the “falling region”, the first cam portion 422 of the second case member 420 contacts the contact surface 441 a of the contact portion 441 of the first slider 440.
However, when the document pressing plate 43 belongs to the “falling region”, the position of the first slider 440 with respect to the first case member 410 does not change even if the rotation angle θ of the document pressing plate 43 changes. More precisely, when the original pressure plate 43 belongs to the “falling region”, the first slider 440 does not change its position relative to the first case member 410 even if the rotation angle θ of the original pressure plate 43 changes. The shape of the cam part 422 and the contact part 441 is preset.
As a result, when the original cover 43 belongs to the “falling region”, the rotational force in (B4) is substantially zero, and the rotational force in (A4) is greater than the rotational force in (B4).

When the document pressing plate 43 belongs to the “falling region”, the second cam portion 412 of the first case member 410 contacts the contact surface 461 of the second slider 460.
Therefore, when the original cover 43 is rotated in the closing direction while the original cover 43 belongs to the “falling region”, the second case member 420 rotates clockwise with respect to the first case member 410 in the right side view. As a result, the contact portion between the second cam portion 412 of the first case member 410 and the contact surface 461 of the second slider 460 changes, and the second slider 460 is inserted into the second storage chamber 421. Moving.

When the second slider 460 moves in the direction of immersing into the second storage chamber 421, the second slider 460 includes an outer peripheral surface (four side surfaces) of the second slider 460 and an inner peripheral surface of the second storage chamber 421. Resistive force due to the viscous resistance of the grease applied to the abutting portion acts.
Therefore, when the original pressure plate 43 belongs to the “falling region”, a part of the rotational force (A4) is offset by the resistance force due to the viscous resistance of the grease, and the speed at which the original pressure plate 43 rotates in the closing direction. Becomes slower (relaxed).
As a result, the original cover 43 is softly in contact with the upper surface of the main body 42, so that the original cover 43 is gently and reliably closed.

In addition, when the operator holds the document pressing plate 43 by hand and rotates the document pressing plate 43 in the opening direction, the second slider 460 resists the viscous resistance of grease by the urging force of the second spring 470. Since it moves in a direction protruding from the second opening 421 a, when the original cover 43 belongs to the “falling region”, “the second cam portion 412 of the first case member 410 abuts against the contact surface 461 of the second slider 460. "Contact state" is maintained.

As described above, the hinge 400 is
A hinge for connecting the document pressing plate 43 to the main body 42 so as to be openable and closable;
A first housing member 411 having a first opening 411a is formed, and a first case member 410 fixed to the main body 42;
A second housing member 421 having a second opening 421a is formed, fixed to the original cover 43, and rotatably coupled to the first case member 410;
A first slider accommodated in the first accommodation chamber 411 and movable in a direction protruding from the first opening 411a and a direction immersing into the first accommodation chamber 411 while contacting the inner peripheral surface of the first accommodation chamber 411 440,
A first spring 450 housed in the first housing chamber 411 and biasing the first slider 440 in a direction protruding from the first opening 411a;
A second slider housed in the second housing chamber 421 and movable in a direction protruding from the second opening 421a and a direction immersing into the second housing chamber 421 while contacting the inner peripheral surface of the second housing chamber 421. 460,
A second spring 470 housed in the second housing chamber 421 and biasing the second slider 460 in a direction protruding from the second opening 421a;
Comprising
The second case member 420 is formed with a first cam portion 422 that contacts the first slider 440.
The first case member 410 is formed with a second cam portion 412 that contacts the second slider 460.
Grease is disposed in the gap between the second slider 460 and the inner peripheral surface of the second storage chamber 421.
With this configuration, the original cover 43 can be closed gently and reliably.

Further, the hinge 400 rotates the rotation angle of the second slider 460 relative to the second case member 420 when the document pressing plate 43 of the multi-function peripheral 41 rotates in a state belonging to the “falling region” (in the “falling region”). The amount of movement per hit is larger than the amount of movement per rotation angle of the first slider 440 relative to the first case member 410.
With this configuration, the second slider 460 moves more than the first slider 440 in a state in which the original cover 43 belongs to the “falling region”, and the second slider 460 and the second storage chamber 421 are moved inside. It is possible to effectively use the resistance force caused by the viscous resistance of the grease arranged in the gap with the peripheral surface as a force that cancels a part of the rotational force of (A4).

In the present embodiment, when the rotation angle θ of the original cover 43 is small in a state where the original cover 43 belongs to the “falling region”, the second cam portion 412 is generally relatively relative to the second case member 420. Move upward.
At this time, it is gently inclined with respect to the relative movement direction of the second cam portion 412 with respect to the second case member 420 (although it is not perpendicular to the relative movement direction of the second cam portion 412 with respect to the second case member 420). Since the abutment surface 461 abuts the second cam portion 412 (which forms an angle close to vertical), the second slider 460 is in a direction substantially perpendicular to the relative movement direction of the second cam portion 412 with respect to the second case member 420. Move forward that is.
By configuring in this way, it is possible to set the amount of movement of the second slider 460 relative to the second case member 420 larger than the amount of relative movement of the second cam portion 412 relative to the second case member 420, The resistance force caused by the viscous resistance of the grease disposed in the gap between the second slider 460 and the inner peripheral surface of the second storage chamber 421 is more effectively used as a force that cancels a part of the rotational force of (A4). It is possible.

In this embodiment, the first case member 410 is fixed to the main body 42 and the second case member 420 is fixed to the original pressure plate 43 so that the hinge 400 rotatably connects the original pressure plate 43 to the main body 42. The present invention is not limited to this.
For example, the first case member 410 may be fixed to the original pressure plate 43 and the second case member 420 may be fixed to the main body 42 so that the hinge 400 can be pivotally connected to the main body 42.

In the present embodiment, the guide grooves 421b and 421b are formed on the inner peripheral surface of the second storage chamber 421 of the second case member 420, and the guide protrusions 462 and 462 are formed on the outer peripheral surface of the second slider 460. The area of the contact portion between the outer peripheral surface of the two sliders 460 and the inner peripheral surface of the second storage chamber 421 is increased, and as a result, the viscous resistance of the grease arranged in the gap between the second slider 460 and the second storage chamber 421 is reduced. The resulting resistance force can be used more effectively as a force that cancels a part of the rotational force of (A4).

In the present embodiment, in the “falling region”, the “original crimping plate 43” in which the resistance force caused by the viscous resistance of the grease disposed in the gap between the second slider 460 and the second storage chamber 421 acts on the second case member 420. Part of the rotational force in the closing direction (rotational force of (A4)) "is offset, but the present invention is not limited to this.
For example, by further narrowing the gap between the second slider 460 and the second storage chamber 421 (smaller than when grease is disposed), the second slider 460 and the second storage chamber 421 A frictional force may be generated in the gap (abutting portion), and the frictional force may cancel a part of the “rotating force in the direction of closing the document pressing plate 43” acting on the second case member 420.

Hereinafter, a hinge 500 that is a fifth embodiment of the hinge according to the present invention will be described with reference to FIGS.

As shown in FIGS. 52 and 53, the hinge 500 rotatably connects the original cover 53 to the main body 52 of the multi-function device 51.
The multi-function device 51 is an embodiment of office equipment. The multi-function device 51 includes a main body 52 and a document pressing plate 53.
The basic configurations and functions of the multi-function device 51, the main body 52, and the original pressure plate 53 are substantially the same as those of the multi-function device 11, the main body 12, and the original pressure plate 13 shown in FIG.

As shown in FIG. 53, the hinge 500 of the present embodiment includes the main hinge member 501 and the sub-hinge member 502 which are two separate parts (separated parts). Different from the embodiment (hinge 100, hinge 200, hinge 300 and hinge 400).
The main hinge member 501 and the sub hinge member 502 are fixed to the main body 52 and the original document pressing plate 53 at a predetermined interval.

Hereinafter, the main hinge member 501 will be described with reference to FIGS. 52 to 60.

The main hinge member 501 is an embodiment of the main hinge member according to the present invention.
As shown in FIGS. 54 to 58, the main hinge member 501 includes a main case member 510, a main rotating member 520, a rotating pin 530, a first slider 540, and a first spring 549.

The main case member 510 is an embodiment of the first main wing member according to the present invention.
The main case member 510 of this embodiment is made of resin and is manufactured by injection molding.
As shown in FIGS. 54, 57 and 59, the main case member 510 is a substantially thin rectangular parallelepiped member.
As shown in FIGS. 58 and 59, a first storage chamber 511 is formed inside the main case member 510.

The first storage chamber 511 is an embodiment of the first storage chamber according to the present invention. The first storage chamber 511 is a space formed inside the main case member 510.
The first storage chamber 511 is open at the base end portion of the main case member 510 (the end portion closer to the position where the main case member 510 and the main rotation member 520 are rotatably connected), and the opening. The part which has formed the 1st opening part 511a. That is, the first storage chamber 511 has a first opening 511a. The first opening 511a is an embodiment of the first opening according to the present invention.
Guide grooves 511 b and 511 b are formed on the inner peripheral surface of the first storage chamber 511. The guide grooves 511b and 511b are grooves extending from the first opening 511a of the first storage chamber 511 toward the back of the first storage chamber 511 (from the base end portion of the main case member 510 toward the distal end portion).

As shown in FIG. 54, the main case member 510 is formed with a protrusion 512. The protruding part 512 is a plate-like part.
One end of the protruding portion 512 is a left side surface of the main case member 510 (a surface facing the left side of the multi-function device 51 when the main hinge member 501 is connected to the main body 52 so as to be able to rotate the document pressing plate 53 of the multi-function device 51). The other end of the protruding portion 512 protrudes to the left side of the left side surface of the main case member 510.
As shown in FIGS. 54 and 56, the projecting portion 512 is formed with through holes 512a, 512b, and 512c. The through holes 512 a, 512 b, and 512 c are holes that penetrate the pair of plate surfaces of the protruding portion 512.

As shown in FIG. 54, a protrusion 513 is formed on the main case member 510. The protruding portion 513 is a plate-like portion.
One end of the projecting portion 513 is the right side surface of the main case member 510 (the surface facing the right side of the multi-function device 51 when the main hinge member 501 is connected to the main body 52 so that the document pressing plate 53 of the multi-function device 51 is rotatable). The other end of the protruding portion 513 protrudes to the right side of the right side surface of the main case member 510.
As shown in FIGS. 54 and 56, the projecting portion 513 is formed with through holes 513a, 513b, and 513c. The through holes 513a, 513b, and 513c are holes that penetrate the pair of plate surfaces of the protruding portion 513.

As shown in FIGS. 54 and 59, a protrusion 514 and a protrusion 515 are formed at the base end portion of the main case member 510.
The protrusion 514 is a protrusion disposed on the base end of the main case member 510 and on the left side of the first opening 511a. The protrusion 515 is on the base end of the main case member 510 and on the right side of the first opening 511a. It is a protrusion arrange | positioned in.
A through hole 514 a is formed in the protrusion 514, and a through hole 515 a is formed in the protrusion 515.
The through hole 514a and the through hole 515a are arranged in a straight line, and the combination of the through hole 514a and the through hole 515a substantially penetrates from the left side surface to the right side surface of the main case member 510.
The longitudinal direction (axial direction) of the through hole 514a and the through hole 515a is parallel to the left-right direction.

In the present embodiment, screws (not shown) are inserted into the through holes 512a, 512b, and 512c and the through holes 513a, 513b, and 513c, and the screws are formed in the rear right end portion of the lower surface of the document crimping plate 53. By screwing (not shown), the main case member 510 is fixed to a position which becomes the rear right end portion on the lower surface of the original cover 53 (see FIGS. 52 and 53).

The main rotation member 520 is an embodiment of the second main wing member according to the present invention.
The main rotating member 520 of this embodiment is made of resin and is manufactured by injection molding.
As shown in FIGS. 54, 57, and 60, the main rotating member 520 has a body portion 521 and an attachment portion 522.

The body portion 521 is a portion forming the upper half of the main rotating member 520. As shown in FIG. 60, the body portion 521 of the present embodiment is a substantially rectangular parallelepiped portion.

A first cam portion 521 a is formed on the body portion 521.
The first cam portion 521a is an embodiment of the first cam portion according to the present invention, and is a massive portion that protrudes upward from the upper surface of the body portion 521.
A through hole 521b is formed in the first cam portion 521a. The through hole 521b is a hole penetrating from the left side rear portion to the right side rear portion of the first cam portion 521a.

The attachment portion 522 is a portion that forms the lower half of the main rotation member 520.
As shown in FIG. 60, the attachment portion 522 of this embodiment is a substantially rectangular parallelepiped portion extending in the vertical direction. The upper end portion of the attachment portion 522 is connected to the lower surface of the body portion 521.

In the present embodiment, the main rotating member 520 is mounted on the main body 52 by fitting the mounting portion 522 into a hole (not shown) in a substantially square shape in plan view formed at a position to be the right rear end portion on the upper surface of the main body 52. 52 (see FIGS. 52 and 53).

The rotation pin 530 is an embodiment of the rotation shaft according to the present invention.
As shown in FIGS. 54 and 56, the rotation pin 530 of the present embodiment has a body portion 531 and a head portion 532, and is made of metal in which a caulking hole 531a is formed at one end portion (tip portion) of the body portion 531. It is a member.
The basic configuration of the rotation pin 530 of the present embodiment is substantially the same as that of the rotation pin 130 shown in FIG.
As shown in FIG. 56, the main rotation member 520 is inserted into the main rotation member 520 via the rotation pin 530 by inserting the body portion 531 of the rotation pin 530 into the through hole 514a, the through hole 521b, and the through hole 515a in order from the left. The main member 501 is pivotally connected to the case member 510, and as a result, the main document pressing plate 53 (the portion serving as the rear right end portion on the lower surface) is rotated to the main body 52 (the portion serving as the rear right end portion on the upper surface). Connected as possible.

As shown in FIGS. 54 and 58, when the main rotation member 520 is rotatably connected to the main case member 510 via the rotation pin 530, the first cam portion 521a is formed in the main case member 510. It faces the first opening 511a of the first storage chamber 511.

The first slider 540 is an embodiment of the first slide member according to the present invention.
The first slider 540 of this embodiment is made of resin and is manufactured by injection molding.
As shown in FIG. 58, the first slider 540 has a contact portion 541, guide portions 542 and 542, and a cylindrical portion 543, and the contact portion 541 is formed with a contact surface 541a.
The basic configuration of the first slider 540 of the present embodiment is substantially the same as that of the first slider 240 shown in FIG.

As shown in FIG. 58, the first slider 540 is housed in the first housing chamber 511 of the main case member 510.
The first slider 540 stored in the first storage chamber 511 contacts the inner peripheral surface of the first storage chamber 511. In addition, the first slider 540 accommodated in the first accommodation chamber 511 protrudes from the first opening 511a (upward in the present embodiment) and enters the interior (back) of the first accommodation chamber 511 ( In this embodiment, it can be moved downward).
More specifically, when the first slider 540 is accommodated in the first accommodating chamber 511, the four end surfaces of the thin rectangular parallelepiped portion of the contact portion 541 are the inner peripheral surfaces (four inner wall surfaces) of the first accommodating chamber 511, respectively. The guide portions 542 and 542 are slidably engaged with the guide grooves 511b and 511b.

The first spring 549 is an embodiment of the first biasing member according to the present invention.
The first spring 549 of this embodiment is a metal winding spring, and is a compression spring (a spring used in a compressed state).
As shown in FIG. 58, the first spring 549 is housed in the first housing chamber 511 of the main case member 510.
One end of the first spring 549 accommodated in the first accommodation chamber 511 is in contact with the bottom surface of the first accommodation chamber 511, and the other end of the first spring 549 is fitted into the cylinder portion 543 of the first slider 540. At the same time, it comes into contact with the other plate surface of the contact portion 541 (the plate surface on which the two divided cylindrical projections are not stacked).
Accordingly, the first spring 549 urges the first slider 540 in a direction protruding from the first opening 511a of the first storage chamber 511, and the contact surface 541a of the contact portion 541 of the first slider 540 is the main rotation. It contacts the first cam portion 521a of the member 520.
As a result, the urging force of the first spring 549 is transmitted to the main rotating member 520 through the first slider 540, so that the main case member 510 rotates counterclockwise with respect to the main rotating member 520 when viewed from the right side. The original pressing plate 53 is urged in the opening direction with respect to the main body 52 (see FIG. 52).

Hereinafter, the sub hinge member 502 will be described with reference to FIGS. 52, 53, and 61 to 67.

The sub hinge member 502 is an embodiment of the sub hinge member according to the present invention.
As shown in FIG. 53, the sub hinge member 502 is a member that is a separate member from the main hinge member 501 (a member that is not integral with the main hinge member 501 but separated from the main hinge member 501).
As shown in FIGS. 61 to 65, the sub hinge member 502 includes a sub case member 560, a sub rotating member 570, a rotating pin 580, a second slider 590, and a second spring 599.

The sub case member 560 is an embodiment of the first sub wing member according to the present invention.
The sub case member 560 of the present embodiment is made of resin and is manufactured by injection molding.
As shown in FIGS. 61, 64 and 66, the sub case member 560 is a substantially thin rectangular parallelepiped member.
As shown in FIGS. 65 and 66, a second storage chamber 561 is formed inside the sub case member 560.

The second storage chamber 561 is an embodiment of the second storage chamber according to the present invention. The second storage chamber 561 is a space formed inside the sub case member 560.
The second storage chamber 561 opens at the base end portion of the sub case member 560 (the end portion closer to the position where the sub case member 560 and the sub rotation member 570 are rotatably connected), and the opening. The part which has formed the 2nd opening part 561a. That is, the second storage chamber 561 has a second opening 561a. The second opening 561a is an embodiment of the second opening according to the present invention.
As shown in FIG. 66, guide grooves 561b and 561b are formed on the inner peripheral surface of the second storage chamber 561. The guide grooves 561b and 561b are grooves extending from the second opening 561a of the second storage chamber 561 toward the back of the second storage chamber 561 (from the base end portion of the sub case member 560 toward the distal end portion).

As shown in FIG. 61, the sub case member 560 is formed with a protruding portion 562. The protruding portion 562 is a plate-like portion.
One end of the protruding portion 562 is the left side surface of the sub case member 560 (the surface facing the left side of the multi-function device 51 when the sub hinge member 502 is rotatably connected to the document pressing plate 53 of the multi-function device 51). The other end portion of the protruding portion 562 protrudes to the left side of the left side surface of the sub case member 560.
As shown in FIGS. 61 and 63, the projecting portion 562 is formed with through holes 562a, 562b, and 562c. The through holes 562a, 562b, and 562c are holes that penetrate the pair of plate surfaces of the protruding portion 562.

As shown in FIG. 61, the sub case member 560 is formed with a protruding portion 563. The protruding portion 563 is a plate-like portion.
One end of the projecting portion 563 is the right side surface of the sub case member 560 (the surface facing the right side of the multi-function device 51 when the sub hinge member 502 is rotatably connected to the document pressing plate 53 of the multi-function device 51). The other end portion of the protruding portion 563 protrudes to the right side of the right side surface of the sub case member 560.
As shown in FIGS. 61 and 63, the projecting portion 563 is formed with through holes 563a, 563b, and 563c. The through holes 563a, 563b, and 563c are holes that penetrate the pair of plate surfaces of the protruding portion 563.

As shown in FIGS. 61 and 66, a protrusion 564, a protrusion 565, a protrusion 566, and a protrusion 567 are formed at the base end portion of the sub case member 560.
The protrusion 564 is a protrusion that is disposed at a position that is a base end portion and a left end portion of the sub case member 560, and the protrusion portion 565 is a right side of the protrusion portion 564 and a second opening at the base end portion of the sub case member 560. The protrusion 566 is a protrusion disposed at a position on the left side of the second opening 561 a at the base end of the sub case member 560, and the protrusion 567. Is a protrusion disposed at a position (right side of the protrusion 566) which becomes the base end and right end of the sub case member 510.
A through hole 564 a is formed in the protrusion 564, a through hole 565 a is formed in the protrusion 565, a through hole 566 a is formed in the protrusion 566, and a through hole 567 a is formed in the protrusion 567.
The through hole 564a, the through hole 565a, the through hole 566a, and the through hole 567a are arranged in a straight line, and the combination of the through hole 564a, the through hole 565a, the through hole 566a, and the through hole 567a is substantially the sub case member 560. It penetrates from the left side to the right side.
The longitudinal direction (axial direction) of the through hole 564a, the through hole 565a, the through hole 566a, and the through hole 567a is parallel to the left-right direction.

In the present embodiment, screws (not shown) are inserted through the through holes 562a, 562b, and 562c and the through holes 563a, 563b, and 563c, and the screws are formed at the rear left end of the lower surface of the document crimping plate 53. By screwing (not shown), the sub case member 560 is fixed to a position which becomes the rear left end portion on the lower surface of the original cover 53 (see FIG. 53).

The sub-rotating member 570 is an embodiment of the second sub-wing member according to the present invention.
The sub-rotating member 570 of this embodiment is made of resin and is manufactured by injection molding.
As shown in FIGS. 61, 64, and 67, the sub-rotating member 570 includes a body portion 571, a protrusion portion 572, a protrusion portion 573, and an attachment portion 574.

The body portion 571 is a massive portion that forms the upper half of the sub-rotating member 570.
A second cam portion 571 a is formed on the body portion 571.
The second cam portion 571a is an embodiment of the second cam portion according to the present invention, and is a massive portion protruding upward from the front end portion of the upper surface of the body portion 571.

The projecting portions 572 and 573 are projecting portions formed at the base end portion of the body portion 571.
More specifically, the protruding portion 572 is a plate-like portion that protrudes upward from the left end portion on the upper surface of the body portion 571, and the protruding portion 573 protrudes upward from the right end portion of the upper surface of the body portion 571. It is a plate-shaped part.
As shown in FIG. 67, the protrusion 572 is formed with a through hole 572a, and the protrusion 573 is formed with a through hole 573a.
The through hole 572a and the through hole 573a are arranged in a straight line, and the combination of the through hole 572a and the through hole 573a substantially penetrates from the left side surface to the right side surface of the sub-rotating member 570.
The longitudinal direction (axial direction) of the through hole 572a and the through hole 573a is parallel to the left-right direction.

The attachment portion 574 is a portion that forms the lower half of the sub-rotating member 570.
As shown in FIG. 67, the attachment portion 574 of the present embodiment is a substantially rectangular parallelepiped portion extending in the vertical direction. The upper end portion of the attachment portion 574 is connected to the lower surface of the body portion 571.

In the present embodiment, the sub-rotation member 570 is mounted on the main body 52 by fitting the mounting portion 574 into a hole (not shown) having a substantially square shape in plan view formed at a position to be the left rear end portion on the upper surface of the main body 52. 52 (see FIG. 53).

The rotation pin 580 is an embodiment of the rotation shaft according to the present invention.
As shown in FIGS. 61 and 63, the rotation pin 580 of the present embodiment has a body portion 581 and a head portion 582, and is made of metal in which a crimping hole 581a is formed at one end portion (tip portion) of the body portion 581. It is a member.
The basic configuration of the rotation pin 580 of the present embodiment is substantially the same as that of the rotation pin 130 shown in FIG.
As shown in FIG. 63, the body portion 531 of the rotation pin 580 is inserted through the through hole 564a, the through hole 572a, the through hole 565a, the through hole 566a, the through hole 573a, and the through hole 567a in this order from the left. The moving member 570 is pivotally connected to the sub case member 560 via the pivot pin 580, and as a result, the sub-hinge member 502 causes the document crimping plate 53 (the portion serving as the rear left end on the lower surface thereof) to move to the main body 52 (of the main body 52). The upper surface of the upper surface is connected to the rear left end portion in a rotatable manner.
When the main hinge member 501 and the sub hinge member 502 are connected to the main body 52 so as to be able to rotate the document crimping plate 53, the axis of the rotation pin 530 of the main hinge member 501 and the rotation pin 580 of the sub hinge member 502 are connected. The axis is a straight line.

As shown in FIGS. 62 and 65, when the sub-rotating member 570 is rotatably connected to the sub-case member 560 via the rotating pin 580, the second cam portion 571a is formed in the sub-case member 560. It faces the second opening 561a of the second storage chamber 561.

The second slider 590 is an embodiment of the second slide member according to the present invention.
The second slider 590 of this embodiment is made of resin and is manufactured by injection molding.
As shown in FIGS. 61 and 65, the second slider 590 is formed with a contact surface 591, guide protrusions 592 and 592, and a spring receiving hole 593.
The basic configuration of the second slider 590 of the present embodiment is substantially the same as that of the second slider 460 shown in FIG.

As shown in FIG. 65, the second slider 590 is housed in the second housing chamber 561 of the sub case member 560.
The second slider 590 accommodated in the second accommodation chamber 561 contacts the inner peripheral surface of the second accommodation chamber 561. Further, the second slider 590 accommodated in the second accommodation chamber 561 is movable in a direction protruding from the second opening 561a and a direction of immersing in the interior (back part) of the second accommodation chamber 561.
More specifically, guide protrusions 592 and 592 formed on one of the four side surfaces of the second slider 590 are slidable in guide grooves 561b and 561b formed on the inner peripheral surface of the second storage chamber 561. (See FIGS. 61 and 66).

Grease is applied to a contact portion between the outer peripheral surface of the second slider 590 and the inner peripheral surface of the second storage chamber 561. In other words, the grease is disposed in the gap between the second slider 590 and the inner peripheral surface of the second storage chamber 561 (including the gap between the guide protrusions 592 and 592 and the guide grooves 561b and 561b).
The grease disposed in the gap between the second slider 590 and the inner peripheral surface of the second storage chamber 561 is an embodiment of the viscous body according to the present invention.

The second spring 599 is an embodiment of the second urging member according to the present invention.
The second spring 599 of this embodiment is a metal winding spring, and is a compression spring (a spring used in a compressed state).
As shown in FIG. 65, the second spring 599 is housed in the second housing chamber 561 of the sub case member 560.
One end of the second spring 599 accommodated in the second accommodation chamber 561 contacts the bottom surface of the second accommodation chamber 561, and the other end of the second spring 599 is accommodated in the spring receiving hole 593 of the second slider 590. At the same time, it abuts against a step surface formed inside the spring receiving hole 593.
Accordingly, the second spring 599 biases the second slider 590 in a direction protruding from the second opening 561a of the second storage chamber 561.

Hereinafter, the behavior of the hinge 500 when the original cover 53 is closed will be described with reference to FIGS. 52, 58, and 65.
In the present embodiment, when the original cover 53 is completely closed, that is, when the lower surface of the original cover 53 is in contact with the upper surface of the main body 52, the rotation angle θ of the original press plate 53 (the original press plate relative to the main body 52). The rotation angle θ of 53 is “0 °”, and the original pressure plate 53 is increased so that the rotation angle θ increases (the rotation angle θ becomes positive) when the original pressure plate 53 is rotated in the opening direction. Is defined (see FIG. 52).

In the present embodiment, when the rotation angle θ of the document pressing plate 53 is 18 ° or more (θ ≧ 18 °), the document pressing plate 53 belongs to the “free stop region”, and the rotation angle θ of the document pressing plate 53 is. Is less than 18 ° (0 ° ≦ θ <18 °), the original cover 53 belongs to the “falling region”.

The “free stop region” in the present embodiment includes (A5) “rotational force (moment) acting on the main case member 510 around the rotation pin 530 due to the weight of the original cover 53” and (B5) “ This is a region where the rotational force (moment) acting on the main case member 510 around the rotation pin 530 due to the biasing force of the first spring 549 is balanced.

When the document pressing plate 53 belongs to the “free stop region”, the first cam portion 521a of the main rotating member 520 comes into contact with the contact surface 541a of the contact portion 541 of the first slider 540 (see FIG. 58).
When the original cover 53 belongs to the “free stop area”, the second cam portion 571a of the sub-rotating member 570 is separated from the second slider 590 and does not contact the second slider 590 (see FIG. 65). ).

When the document crimping plate 53 is rotated in the closing direction while the document crimping plate 53 belongs to the “free stop area”, the rotational force in (A5) increases.
On the other hand, when the document crimping plate 53 is rotated in the closing direction while the document crimping plate 53 belongs to the “free stop area”, the main case member 510 is moved relative to the main rotating member 520 (the subcase member 560 is The contact portion between the first cam portion 521a of the main rotation member 520 and the contact surface 541a of the contact portion 541 of the first slider 540 is rotated clockwise as viewed from the right side (with respect to the moving member 570). As a result, the first slider 540 moves in a direction to be immersed in the first storage chamber 511.
As the first slider 540 moves in the direction of immersing into the first storage chamber 511, the first spring 549 is compressed (the overall length of the first spring 549 is reduced), and the biasing force of the first spring 549 is increased. Then, the rotational force of (B5) increases.
As a result, when the document crimping plate 53 belongs to the “free stop region”, the rotational force (A5) and the rotational force (B5) are balanced even if the rotation angle θ of the document crimping plate 53 changes. More precisely, when the document pressing plate 53 belongs to the “free stop region”, even if the rotation angle θ of the document pressing plate 53 changes, the rotational force (A5) and the rotational force (B5) are balanced. The shapes of the first cam portion 521a and the contact portion 541 are preset.
Therefore, when the operator releases his / her hand from the original cover 53 when the original cover 53 belongs to the “free stop area”, the rotation angle θ of the original cover 53 is maintained.

The “falling area” in the present embodiment is an area where the rotational force of (A5) is larger than the rotational force of (B5).
When the operator releases his / her hand from the original pressure bonding plate 53 when the original pressure bonding plate 53 belongs to the “falling area”, the original pressure bonding plate 53 has its own weight (strictly speaking, the rotational force of (A5) and the rotation of (B5)). It rotates in the closing direction by the difference between the force and the force.

When the document pressing plate 53 belongs to the “falling region”, the first cam portion 521a of the main rotating member 520 comes into contact with the contact surface 541a of the contact portion 541 of the first slider 540.
However, when the document pressing plate 53 belongs to the “falling region”, the position of the first slider 540 with respect to the main case member 510 does not change even if the rotation angle θ of the document pressing plate 53 changes. More precisely, when the original cover 53 belongs to the “falling region”, the first cam so that the position of the first slider 540 relative to the main case member 510 does not change even if the rotation angle θ of the original cover 53 changes. The shapes of the part 521a and the contact part 541 are preset.
As a result, when the original cover 53 belongs to the “falling region”, the rotational force in (B5) is substantially zero, and the rotational force in (A5) is greater than the rotational force in (B5).

When the document pressing plate 53 belongs to the “falling region”, the second cam portion 571 a of the sub-rotating member 570 contacts the contact surface 591 of the second slider 590.
Accordingly, when the original cover 53 is turned in the closing direction while the original cover 53 belongs to the “falling region”, the sub case member 560 rotates clockwise with respect to the sub turn member 570 in the right side view. Then, the contact portion between the second cam portion 571a of the sub-rotating member 570 and the contact surface 591 of the second slider 590 changes, and the second slider 590 moves in the direction of immersing into the second storage chamber 561. To do.

When the second slider 590 moves in the direction of immersing into the second storage chamber 561, the second slider 590 includes an outer peripheral surface (four side surfaces) of the second slider 590 and an inner peripheral surface of the second storage chamber 561. Resistive force due to the viscous resistance of the grease applied to the abutting portion acts.
Therefore, when the original cover 53 belongs to the “falling region”, a part of the rotational force (A5) is offset by the resistance force due to the viscous resistance of the grease, and the speed at which the original cover 53 rotates in the closing direction. Becomes slower (relaxed).
As a result, the original cover 53 is softly in contact with the upper surface of the main body 52, so that the original cover 53 is gently and reliably closed.

When the operator holds the document crimping plate 53 by hand and rotates the document crimping plate 53 in the opening direction, the second slider 590 resists the viscous resistance of grease by the urging force of the second spring 599. Since it moves in a direction protruding from the second opening 561 a, when the document crimping plate 53 belongs to the “falling region”, “the second cam portion 571 a of the sub-rotating member 570 contacts the contact surface 591 of the second slider 590. "Contact state" is maintained.

As described above, the hinge 500 is
A hinge for connecting the document pressing plate 53 to the main body 52 so as to be openable and closable;
A main hinge member 501;
A sub hinge member 502 which is a separate body from the main hinge member 501;
Comprising
The main hinge member 501
A first case chamber 511 having a first opening 511a is formed, and a main case member 510 fixed to the document pressing plate 53;
A main rotating member 520 fixed to the main body 52 and rotatably connected to the main case member 510;
A first slider accommodated in the first accommodation chamber 511 and movable in a direction protruding from the first opening 511a and a direction immersing into the first accommodation chamber 511 while contacting the inner peripheral surface of the first accommodation chamber 511 540,
A first spring 549 housed in the first housing chamber 511 and biasing the first slider 540 in a direction protruding from the first opening 511a;
Comprising
The main rotating member 520 is formed with a first cam portion 521a that contacts the first slider 540.
The sub hinge member 502 is
A second housing chamber 561 having a second opening 561a is formed, and a sub case member 560 fixed to the original pressure plate 53;
A sub-rotating member 570 fixed to the main body 52 and rotatably connected to the sub-case member 560;
A second slider housed in the second housing chamber 561 and movable in a direction protruding from the second opening 561a and a direction immersing into the second housing chamber 561 while contacting the inner peripheral surface of the second housing chamber 561. 590,
A second spring 599 housed in the second housing chamber 561 and biasing the second slider 590 in a direction protruding from the second opening 561a;
Comprising
The sub-rotating member 570 is formed with a second cam portion 571a that contacts the second slider 590,
Grease is disposed in the gap between the second slider 590 and the inner peripheral surface of the second storage chamber 561.
With this configuration, the original cover 53 can be closed gently and reliably.

Further, when the original cover 53 of the multi-function peripheral 51 rotates in the “falling area” (within the “falling area”), the hinge 500 is rotated per rotation angle of the second slider 590 relative to the sub case member 560. Is larger than the amount of movement of the first slider 540 per rotation angle with respect to the main case member 510.
With this configuration, the second slider 590 moves more than the first slider 540 in a state where the original cover 53 belongs to the “falling region”, and the second slider 590 and the second storage chamber 561 are moved inside. It is possible to effectively use the resistance force caused by the viscous resistance of the grease arranged in the gap with the peripheral surface as a force that cancels a part of the rotational force of (A5).

In the present embodiment, when the rotation angle θ of the original cover 53 is small with the original cover 53 belonging to the “falling region”, the second cam portion 571a is substantially upward relative to the sub case member 560. Move to.
At this time, the second cam portion 571a is inclined gently with respect to the relative movement direction of the second cam portion 571a with respect to the sub case member 560 (although not perpendicular to the relative movement direction of the second cam portion 571a with respect to the sub case member 560). Since the contact surface 591 (which forms a close angle) contacts the second cam portion 571a, the second slider 590 is a front that is substantially perpendicular to the relative movement direction of the second cam portion 571a with respect to the sub case member 560. Move to.
With this configuration, the movement amount of the second slider 590 relative to the sub case member 560 can be set larger than the relative movement amount of the second cam portion 571a relative to the sub case member 560. It is possible to more effectively use the resistance force caused by the viscous resistance of the grease disposed in the gap between the slider 590 and the inner peripheral surface of the second storage chamber 561 as a force that cancels a part of the rotational force of (A5). Is possible.

In this embodiment, the main case member 510 of the main hinge member 501 is fixed to the original cover plate 53, the main rotating member 520 is fixed to the main body 52, and the sub case member 560 of the sub hinge member 502 is fixed to the original cover plate 53. While fixing and fixing the sub-rotating member 570 to the main body 52, the hinge 500 connects the original cover 53 to the main body 52 so as to be rotatable, but the present invention is not limited to this.
For example, the main case member 510 of the main hinge member 501 is fixed to the document pressing plate 53, the main rotating member 520 is fixed to the main body 52, and the sub case member 560 of the sub hinge member 502 is fixed to the main body 52 and The hinge 500 may be connected to the main body 52 so as to be rotatable by fixing the rotating member 570 to the original pressing plate 53.
Further, the main case member 510 of the main hinge member 501 is fixed to the main body 52, the main rotating member 520 is fixed to the original cover plate 53, and the sub case member 560 of the sub hinge member 502 is fixed to the original cover plate 53. At the same time, the sub-rotating member 570 may be fixed to the main body 52 so that the hinge 500 connects the original pressing plate 53 to the main body 52 in a rotatable manner.
In addition, the main case member 510 of the main hinge member 501 is fixed to the main body 52, the main rotating member 520 is fixed to the document pressing plate 53, and the sub case member 560 of the sub hinge member 502 is fixed to the main body 52, and The hinge 500 may be connected to the main body 52 so as to be rotatable by fixing the rotating member 570 to the original pressing plate 53.

In the present embodiment, the guide grooves 561b and 561b are formed on the inner peripheral surface of the second storage chamber 561 of the sub case member 560, and the guide protrusions 592 and 592 are formed on the outer peripheral surface of the second slider 590. The area of the contact portion between the outer peripheral surface of the slider 590 and the inner peripheral surface of the second storage chamber 561 is increased, and as a result, the viscosity resistance of the grease disposed in the gap between the second slider 590 and the second storage chamber 561 is caused. It is possible to more effectively use the resisting force as a force that cancels a part of the rotational force of (A5).

In the present embodiment, in the “falling region”, a resistance force caused by the viscous resistance of grease disposed in the gap between the second slider 590 and the second storage chamber 561 acts on the main case member 510. A part of the “rotational force in the closing direction (rotational force of (A5))” is offset, but the present invention is not limited to this.
For example, by further narrowing the gap between the second slider 590 and the second storage chamber 561 (smaller than when grease is disposed), the second slider 590 and the second storage chamber 561 in the “fall region” A frictional force may be generated in the gap (abutting portion), and the frictional force may cancel a part of the “rotating force in the direction of closing the document pressing plate 53” acting on the main case member 510.

Although the hinge 500 of this embodiment includes one main hinge member 501 and one sub hinge member 502, the present invention is not limited to this.
For example, the hinge 500 may include two main hinge members 501 and 501 and one sub hinge member 502, and the hinge 500 may include one main hinge member 501 and two sub hinge members 502 and 502. good. That is, the hinge according to the present invention may include at least one (one or more) main hinge members and at least one (one or more) sub hinge members.

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

Claims (20)

1. A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
   A first storage chamber having a first opening and a second storage chamber having a second opening are formed, and a first wing member fixed to one of the first connection object and the second connection object;
   A second wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first wing member;
   A first slide received in the first storage chamber and movable in a direction protruding from the first opening and a direction of immersing in the first storage chamber while contacting the inner peripheral surface of the first storage chamber Members,
   A first biasing member housed in the first housing chamber and biasing the first slide member in a direction protruding from the first opening;
   A second slide that is accommodated in the second accommodation chamber and is movable in a direction protruding from the second opening and a direction of immersing in the second accommodation chamber while abutting the inner peripheral surface of the second accommodation chamber. Members,
   A second biasing member housed in the second housing chamber and biasing the second slide member in a direction protruding from the second opening;
   Comprising
   The second wing member is formed with a first cam portion that contacts the first slide member and a second cam portion that contacts the second slide member,
   A hinge in which a viscous body is disposed in a gap between the second slide member and the inner peripheral surface of the second storage chamber.
2. When the second connection object rotates within the fall region, the amount of movement of the second slide member relative to the first wing member per rotation angle is the rotation of the first slide member relative to the first wing member. The hinge according to claim 1, wherein the hinge is larger than an amount of movement per angle.
3. The first opening and the second opening are arranged side by side in the circumferential direction of the rotation axis of the second wing member with respect to the first wing member,
   The hinge according to claim 1 or 2, wherein the first cam portion and the second cam portion are arranged side by side in a circumferential direction of the rotation shaft.
4. The first opening and the second opening are arranged side by side in the axial direction of the rotation axis of the second wing member with respect to the first wing member,
   The hinge according to claim 1 or 2, wherein the first cam portion and the second cam portion are arranged side by side in an axial direction of the rotation shaft.
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 formed with a main accommodating chamber having a main opening and fixed to one of the first connection object and the second connection object;
   A second wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first wing member;
   A sub-accommodating chamber having a sub-opening is formed, is accommodated in the main accommodating chamber, and enters the main accommodating chamber in a direction protruding from the main opening while abutting the inner peripheral surface of the main accommodating chamber. A first slide member movable in a direction;
   A first biasing member housed in the main housing chamber and biasing the first slide member in a direction protruding from the main opening;
   A second slide member accommodated in the sub-accommodating chamber and movable in a direction protruding from the sub-opening and a direction of immersing in the sub-accommodating chamber while being in contact with the inner peripheral surface of the sub-accommodating chamber;
   A second biasing member housed in the sub-accommodating chamber and biasing the second slide member in a direction protruding from the sub-opening;
   Comprising
   The second wing member is formed with a first cam portion that contacts the first slide member and a second cam portion that contacts the second slide member,
   A hinge in which a viscous body is disposed in a gap between the second slide member and the inner peripheral surface of the sub-accommodating chamber.
6. When the second connection object rotates within the fall region, the amount of movement of the second slide member relative to the first slide member per rotation angle is the rotation of the first slide member relative to the first wing member. The hinge according to claim 5, wherein the hinge is larger than an amount of movement per angle.
7. A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
   A first housing member having a first opening is formed, and a first wing member fixed to one of the first connection object and the second connection object;
   A second wing member having a second opening is formed, is fixed to the other of the first connection object and the second connection object, and is rotatably connected to the first wing member. When,
   A first slide received in the first storage chamber and movable in a direction protruding from the first opening and a direction of immersing in the first storage chamber while contacting the inner peripheral surface of the first storage chamber Members,
   A first biasing member housed in the first housing chamber and biasing the first slide member in a direction protruding from the first opening;
   A second slide that is accommodated in the second accommodation chamber and is movable in a direction protruding from the second opening and a direction of immersing in the second accommodation chamber while abutting the inner peripheral surface of the second accommodation chamber. Members,
   A second biasing member housed in the second housing chamber and biasing the second slide member in a direction protruding from the second opening;
   Comprising
   The second wing member is formed with a first cam portion that contacts the first slide member,
   The first wing member is formed with a second cam portion that contacts the second slide member,
   A hinge in which a viscous body is disposed in a gap between the second slide member and the inner peripheral surface of the second storage chamber.
8. When the second connection object rotates in the fall region, the amount of movement of the second slide member relative to the second wing member per rotation angle is the rotation of the first slide member relative to the first wing member. The hinge according to claim 7, wherein the hinge is larger than a moving amount per angle.
9. A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
   A main hinge member;
   A sub hinge member separate from the main hinge member;
   Comprising
   The main hinge member is
   A first main wing member formed with a first storage chamber having a first opening and fixed to one of the first connection object and the second connection object;
   A second main wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first main wing member;
   A first slide received in the first storage chamber and movable in a direction protruding from the first opening and a direction of immersing in the first storage chamber while contacting the inner peripheral surface of the first storage chamber Members,
   A first biasing member housed in the first housing chamber and biasing the first slide member in a direction protruding from the first opening;
   Comprising
   The second main wing member is formed with a first cam portion that contacts the first slide member,
   The sub hinge member is
   A second sub-wing member formed with a second storage chamber having a second opening and fixed to one of the first connection object and the second connection object;
   A second sub wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first sub wing member;
   A second slide that is accommodated in the second accommodation chamber and is movable in a direction protruding from the second opening and a direction of immersing in the second accommodation chamber while abutting the inner peripheral surface of the second accommodation chamber. Members,
   A second biasing member housed in the second housing chamber and biasing the second slide member in a direction protruding from the second opening;
   Comprising
   The second sub wing member is formed with a second cam portion that contacts the second slide member,
   A hinge in which a viscous body is disposed in a gap between the second slide member and the inner peripheral surface of the second storage chamber.
10. When the second connection object rotates within the fall region, the amount of movement of the second slide member relative to the first sub wing member per rotation angle is that of the first slide member relative to the first main wing member. The hinge according to claim 9, wherein the hinge is larger than a movement amount per rotation angle.
11. A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
    A first storage chamber having a first opening and a second storage chamber having a second opening are formed, and a first wing member fixed to one of the first connection object and the second connection object;
    A second wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first wing member;
    A first slide received in the first storage chamber and movable in a direction protruding from the first opening and a direction of immersing in the first storage chamber while contacting the inner peripheral surface of the first storage chamber Members,
    A first biasing member housed in the first housing chamber and biasing the first slide member in a direction protruding from the first opening;
    A second slide that is accommodated in the second accommodation chamber and is movable in a direction protruding from the second opening and a direction of immersing in the second accommodation chamber while abutting the inner peripheral surface of the second accommodation chamber. Members,
    A second biasing member housed in the second housing chamber and biasing the second slide member in a direction protruding from the second opening;
    Comprising
    The second wing member is formed with a first cam portion that contacts the first slide member and a second cam portion that contacts the second slide member,
    A hinge that generates a frictional force at a contact portion between the second slide member and the inner peripheral surface of the second storage chamber.
12. When the second connection object rotates within the fall region, the amount of movement of the second slide member relative to the first wing member per rotation angle is the rotation of the first slide member relative to the first wing member. The hinge according to claim 11, wherein the hinge is larger than an amount of movement per angle.
13. The first opening and the second opening are arranged side by side in the circumferential direction of the rotation axis of the second wing member with respect to the first wing member,
    The hinge according to claim 11 or 12, wherein the first cam portion and the second cam portion are arranged side by side in a circumferential direction of the rotation shaft.
14. The first opening and the second opening are arranged side by side in the axial direction of the rotation axis of the second wing member with respect to the first wing member,
    The hinge according to claim 11 or 12, wherein the first cam portion and the second cam portion are arranged side by side in an axial direction of the rotation shaft.
15. A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
    A first wing member formed with a main accommodating chamber having a main opening and fixed to one of the first connection object and the second connection object;
    A second wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first wing member;
    A sub-accommodating chamber having a sub-opening is formed, is accommodated in the main accommodating chamber, and enters the main accommodating chamber in a direction protruding from the main opening while abutting the inner peripheral surface of the main accommodating chamber. A first slide member movable in a direction;
    A first biasing member housed in the main housing chamber and biasing the first slide member in a direction protruding from the main opening;
    A second slide member accommodated in the sub-accommodating chamber and movable in a direction protruding from the sub-opening and a direction of immersing in the sub-accommodating chamber while being in contact with the inner peripheral surface of the sub-accommodating chamber;
    A second biasing member housed in the sub-accommodating chamber and biasing the second slide member in a direction protruding from the sub-opening;
    Comprising
    The second wing member is formed with a first cam portion that contacts the first slide member and a second cam portion that contacts the second slide member,
    A hinge that generates a frictional force at a contact portion between the second slide member and the inner peripheral surface of the second storage chamber.
16. When the second connection object rotates within the fall region, the amount of movement of the second slide member relative to the first slide member per rotation angle is the rotation of the first slide member relative to the first wing member. The hinge according to claim 15, wherein the hinge is larger than an amount of movement per angle.
17. A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
    A first housing member having a first opening is formed, and a first wing member fixed to one of the first connection object and the second connection object;
    A second wing member having a second opening is formed, is fixed to the other of the first connection object and the second connection object, and is rotatably connected to the first wing member. When,
    A first slide received in the first storage chamber and movable in a direction protruding from the first opening and a direction of immersing in the first storage chamber while contacting the inner peripheral surface of the first storage chamber Members,
    A first biasing member housed in the first housing chamber and biasing the first slide member in a direction protruding from the first opening;
    A second slide that is accommodated in the second accommodation chamber and is movable in a direction protruding from the second opening and a direction of immersing in the second accommodation chamber while abutting the inner peripheral surface of the second accommodation chamber. Members,
    A second biasing member housed in the second housing chamber and biasing the second slide member in a direction protruding from the second opening;
    Comprising
    The second wing member is formed with a first cam portion that contacts the first slide member,
    The first wing member is formed with a second cam portion that contacts the second slide member,
    A hinge that generates a frictional force at a contact portion between the second slide member and the inner peripheral surface of the second storage chamber.
18. When the second connection object rotates within the fall region, the amount of movement of the second slide member relative to the second wing member per rotation angle is the rotation of the first slide member relative to the first wing member. The hinge according to claim 17, wherein the hinge is larger than an amount of movement per angle.
19. A hinge for connecting the second connection object to the first connection object so as to be openable and closable,
    A main hinge member;
    A sub hinge member separate from the main hinge member;
    Comprising
    The main hinge member is
    A first main wing member formed with a first storage chamber having a first opening and fixed to one of the first connection object and the second connection object;
    A second main wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first main wing member;
    A first slide received in the first storage chamber and movable in a direction protruding from the first opening and a direction of immersing in the first storage chamber while contacting the inner peripheral surface of the first storage chamber Members,
    A first biasing member housed in the first housing chamber and biasing the first slide member in a direction protruding from the first opening;
    Comprising
    The second main wing member is formed with a first cam portion that contacts the first slide member,
    The sub hinge member is
    A second sub-wing member formed with a second storage chamber having a second opening and fixed to one of the first connection object and the second connection object;
    A second sub wing member fixed to the other of the first connection object and the second connection object and rotatably connected to the first sub wing member;
    A second slide that is accommodated in the second accommodation chamber and is movable in a direction protruding from the second opening and a direction of immersing in the second accommodation chamber while abutting the inner peripheral surface of the second accommodation chamber. Members,
    A second biasing member housed in the second housing chamber and biasing the second slide member in a direction protruding from the second opening;
    Comprising
    The second sub wing member is formed with a second cam portion that contacts the second slide member,
    A hinge that generates a frictional force at a contact portion between the second slide member and the inner peripheral surface of the second storage chamber.
20. When the second connection object rotates within the fall region, the amount of movement of the second slide member relative to the first sub wing member per rotation angle is that of the first slide member relative to the first main wing member. The hinge according to claim 19, wherein the hinge is larger than a movement amount per rotation angle.

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