JP2017009024A - Hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hinge capable of simplifying maintenance work, by providing a mechanism without any adjustment for regulating a rotation angle of a second wing member.SOLUTION: A hinge 100 includes a sparing 60 that rotates a second wing member in a direction of being made into an opened state to a first wing member, in a first region where a rotation angle θ of the second wing member from a closed state to the first wing member is within a range from 0 degree to a first predetermined φ1, and receives energization force in a direction of being made into the closed state where the second wing member is made into the closed state to the first wing member, by contacting a pressing part 42a with a pressed part 164 in a second state where the rotation angle θ is within a range from the first predetermined angle φ1 to a second predetermined angle φ2.SELECTED DRAWING: Figure 2

Description

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

  2. Description of the Related Art Conventionally, many office machines used in offices such as copying machines, facsimile machines, scanners, and the like have a document reading section (contact glass) on the upper surface of the main body and a document crimping plate that covers the document reading section. . The document crimping plate is 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.

  As a device for connecting the main body of the office equipment and the original pressure plate, the first wing member, the cam member fixed to the first wing member, and the first wing member are rotatably connected to each other via a rotation shaft. The second wing member to be moved, a slide member movable in a direction approaching the cam member and a direction away from the cam member, and urging the slide member in a direction approaching the cam member to make the slide member a cam member A hinge including an urging member to be brought into contact is known (see, for example, Patent Document 1 and Patent Document 2).

JP 2011-191728 A JP 2014-190461 A

  According to the hinge in the prior art, the maximum rotation angle of the second wing member with respect to the first wing member is set to about 90 degrees for the serviceman to perform maintenance of office equipment and the like. On the other hand, since it is not necessary to open the second wing member to the maximum rotation angle during normal use of the hinge, the second wing member relative to the first wing member is made compact in order to make the rotation range of the original crimping plate compact. The rotation angle of the wing member is restricted to about 60 to 70 degrees. At this time, in order to restrict the rotation angle of the second wing member, a hole such as a pin hole or a screw hole is formed in the first wing member, and a restriction member such as a restriction pin or a restriction screw is inserted into this hole. It is configured to do. Then, at the time of maintenance of the office equipment, the restriction member is removed from the hole to release the restriction on the rotation angle of the second wing member.

  However, in order to regulate the rotation angle of the second wing member as described above, when a mechanism such as a regulating member that is attached to and detached from the hinge is provided, it is necessary to make adjustments such as extracting the regulating member during maintenance. Therefore, the maintenance work has become complicated.

  The present invention has been made in view of the above situation, and the problem to be solved by the present invention is to provide a maintenance work by providing a mechanism that does not require adjustment in order to regulate the rotation angle of the second wing member. It is providing the hinge which can simplify.

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

  That is, in Claim 1, the 1st wing member fixed to a 1st connection target object, the cam member fixed to said 1st wing member, and the to-be-pressed part arrange | positioned at said 1st wing member, The first wing member is fixed to the second connection object and is pivotally coupled to the first wing member via a pivot shaft, and the first wing member transitions between an open state and a closed state. A second wing member, a cam receiving portion that is movably accommodated in a direction approaching the cam member and a direction away from the cam member, and is capable of contacting the cam member; A slide member formed with a pressing portion capable of contacting the pressed portion; and urging the slide member in a direction approaching the cam member to bring the slide member into contact with the cam member, Second win The second wing member is in an open state with respect to the first wing member in a first region where the rotation angle of the member from the closed state with respect to the first wing member is from 0 degrees to a first predetermined angle. An urging member that rotates in a direction, wherein the pressing portion is in a second region from the first predetermined angle to a second predetermined angle that is larger than the first predetermined angle. Is in contact with the pressed portion, and the slide member compresses the biasing member, whereby the second wing member receives a biasing force in a direction in which the second wing member is closed with respect to the first wing member. .

  According to a second aspect of the present invention, the urging force becomes zero when the rotation angle becomes the second predetermined angle.

  According to a third aspect of the present invention, the cam member is formed by bending a plate-like member, and is fixed to two side plates that support the rotating shaft in the first wing member; and the fixing portion And a curved plate portion bent about an axis parallel to the rotation shaft so that the side of the slide member is convex when the second wing member is in a closed state. The pressed part is formed by bending the fixed part.

  According to a fourth aspect of the present invention, the first wing member includes two side plates that support the rotating shaft, and the pressed portion is formed by bending the side plate.

  The hinge which concerns on this invention has an effect that a maintenance operation | work can be simplified by providing the mechanism which does not need adjustment in order to regulate the rotation angle of a 2nd wing member.

The right view which shows the multifunctional machine which comprises the hinge which concerns on 1st embodiment of this invention. The right view which shows the 60 degree open state of the hinge which concerns on 1st embodiment. The right view which shows the obstruction | occlusion state of the hinge which concerns on 1st embodiment. The front view which shows the obstruction | occlusion state of the hinge which concerns on 1st embodiment. AA line sectional view in FIG. Sectional drawing which shows the 60 degree | times open state of the hinge which concerns on 1st embodiment. Sectional drawing which shows the 90 degree | times open state of the hinge which concerns on 1st embodiment. The right view which shows the contact part of a press part and a to-be-pressed part. The perspective view which shows a cam member. The figure which showed the plate-shaped member before forming a cam member.

Hereinafter, a multifunction machine 1 that is an embodiment of an office machine will be described with reference to FIG.
The multi-function device 1 includes a main body 2 and an original cover 3. In the present embodiment, the multifunction device 1 is configured to include the hinge 100 according to the first embodiment of the present invention, but the multifunction device 1 may be configured to include a hinge according to another embodiment described later. It is.

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

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

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

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

  In the following description, the rotation angle θ of the original cover 3 when the original cover 3 is closed (when the lower surface of the original cover 3 is in contact with the upper surface of the main body 2) (more precisely, the main body The rotation angle θ of the original cover 3 with respect to 2 is set to “0 °”, and the rotation angle θ increases (the turn angle θ becomes positive) when the original cover 3 is rotated in the opening direction. The rotation angle θ of the original cover 3 is defined as follows (see FIG. 1). In the present embodiment, the rotation angle θ of the original cover 3 with respect to the main body 2 also coincides with the rotation angle of the second wing member, which will be described later, from the closed state with respect to the first wing member. For this reason, in this embodiment, both are described as “rotation angle θ”.

Below, the hinge 100 which is one Embodiment of the hinge based on this invention is demonstrated using FIGS. 1-10.
As shown in FIG. 1, the hinge 100 connects the original cover 3 to the main body 2 of the multifunction machine 1 so as to be rotatable.
As shown in FIGS. 2 to 7, the hinge 100 includes a lower fixing member 110, an intermediate member 20, a first rotating pin 71, a pair of bearings 74, an upper fixing member 30, a second rotating pin 72, a pressure receiving pin 73, a first receiving pin 73, and a second receiving pin 73. One slider 40, a second slider 50, a spring 60, a damper 62, and a cam member 160 are provided.
In the following, for the sake of convenience, when the original cover 3 is closed with respect to the main body 2 (when the rotation angle θ = 0 degrees), the upper and lower directions, the front and rear directions, and the left and right directions of the multi-function device 1 are used as references (the original cover 3). The shape of each member constituting the hinge 100 is such that the vertical direction, the front-rear direction, and the left-right direction of the multifunction machine 1 when the is closed with respect to the main body 2 correspond to the vertical direction, front-rear direction, and left-right direction of the hinge 100, respectively. Will be explained.

The lower fixing member 110 is an embodiment of the first wing member according to the present invention. The lower fixing member 110 is fixed to the main body 2 of the multifunction machine 1.
The lower fixing member 110 of the present embodiment is formed by appropriately bending a single metal plate. The lower fixing member 110 includes a bottom plate 111, left and right side plates 112 and 112, which are first side plates, and a back plate 113.

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

  The side plate 112 is a plate-like member that forms the left and right sides of the lower fixing member 110. The side plate 112 has a shape like a staircase that is generally forwardly lowered in a side view. The lower end portion of the side plate 112 is connected to the end portion of the bottom plate 111 (the bottom plate 111 and the side plates 112 and 112 are formed by bending one metal plate at a right angle). A through hole for inserting the first rotation pin 71 is opened at the rear upper end portion of the side plate 112. A fixing hole 112b is opened below the through hole. A cylindrical locking portion 112a for locking the cam member 160 protrudes toward the inner side (bottom plate 111 side) behind the fixed hole 112b.

The back plate 113 is a plate-like member that forms the rear portion of the lower fixing member 110. The back plate 113 has a pair of front and rear plate surfaces. The shape of the back plate 113 is a generally rectangular shape that is slightly long in the left-right direction when viewed from the front.
The lower end portion of the back plate 113 is connected to the rear end portion of the bottom plate 111 (the bottom plate 111 and the back plate 113 are formed by bending a single metal plate at a right angle).
Protruding portions (not shown) projecting sideways are formed on the left and right end portions of the back plate 113, and the lower fixing member 110 forms a strong structure by penetrating the projecting portions into the side plate 112.

  The intermediate member 20 is a substantially cylindrical member formed of a top plate and two second side plates 21 and 21 by appropriately bending a single metal plate. The intermediate member 20 is rotatably supported by the lower fixing member 110 via the first rotation pin 71 in a state in which the first slider 40, the second slider 50, the spring 60, the damper 62 and the like are accommodated as will be described later. . A through-hole for inserting the first rotation pin 71 is opened in the left-right direction at the rear part of the second side plates 21.

The first rotation pin 71 is an implementation of the “rotation axis of the second wing member relative to the first wing member (a rotation axis that rotatably connects the second wing member to the first wing member)” according to the present invention. It is one form and is a substantially cylindrical member.
The bearing 74 is a substantially ring-shaped (thin cylindrical) member, and rotatably supports the first rotation pin 71 in a through hole opened in the side plate 112 of the lower fixing member 110.

The first rotation pin 71 is inserted through a through hole formed in the second side plates 21 and 21 of the intermediate member 20 and a through hole of the bearing 74 fitted to the side plate 112 of the lower fixing member 110. In other words, the first rotation pin 71 is supported by the second side plates 21 and 21. The intermediate member 20 is rotatably connected to the lower fixing member 110 via the first rotation pin 71.
The E-ring (not shown) is fitted to both end portions of the outer peripheral surface of the first rotation pin 71 so that the first rotation pin 71 does not fall off from the intermediate member 20 and the lower fixing member 110.

  The upper fixing member 30 is a substantially cylindrical member formed of a top plate and two side plates by appropriately bending a single metal plate. The upper fixing member 30 is rotatably supported by the intermediate member 20 via a second rotation pin 72 as will be described later. The upper fixing member 30 is fixed to the original cover 3. An adjustment screw 31 is screwed into the upper surface of the upper fixing member 30, and the position of the upper fixing member 30 relative to the intermediate member 20 can be adjusted by adjusting the length of the adjustment screw 31.

  The second rotation pin 72 is a member that forms a rotation shaft that rotatably connects the upper fixing member 30 to the intermediate member 20. The second rotation pin 72 is a generally cylindrical member having a pair of end surfaces and an outer peripheral surface, and is inserted through the front portions of the upper fixing member 30 and the intermediate member 20. As a result, the upper fixing member 30 is rotatably connected to the intermediate member 20 via the second rotation pin 72. Note that the E-ring (not shown) is fitted into ring-shaped grooves formed at both ends of the outer peripheral surface of the second rotation pin 72, whereby the second rotation pin 72 is connected to the upper fixing member 30 and the intermediate member. Does not fall off from 20.

  The pressure receiving pin 73 is a substantially cylindrical member having a pair of end surfaces and an outer peripheral surface. Both end portions of the outer peripheral surface of the pressure receiving pin 73 (portions close to the pair of end surfaces) extend along the circumferential direction of the pressure receiving pin 73. Thus, a ring-shaped groove is formed. By inserting the pressure receiving pin 73 into the upper fixing member 30, the pressure receiving pin 73 is pivotally supported by the upper fixing member 30. Note that the E-ring (not shown) is fitted into ring-shaped grooves formed at both ends of the outer peripheral surface of the pressure receiving pin 73, so that the pressure receiving pin 73 does not fall off the upper fixing member 30.

The first slider 40 is an embodiment of the slide member according to the present invention. The first slider 40 of this embodiment is made of a resin material.
The first slider 40 includes a cam contact surface 41 formed to protrude rearward at the lower half of the rear surface, and a recess 42 formed at the upper half of the left and right ends of the rear surface. The first slider 40 is formed with a spring receiving hole for receiving the rear end portion of the spring 60. A pressing projection 43 that presses the tip 62a of the damper 62 is formed on the bottom surface of the spring receiving hole so as to protrude toward the second rotating pin 72 side. The first slider 40 is accommodated in the rear part inside the intermediate member 20 so as to be slidable in the front-rear direction. The recess 42 is formed with a pressing portion 42a that can abut on a pressed portion 164 described later (see FIGS. 6 to 8).

The second slider 50 is a member having a cover portion 51. The second slider 50 of this embodiment is made of a resin material. The cover part 51 prevents the grease from dripping downward from the first slider 40 or the second slider 50.
The second slider 50 is formed with a spring receiving hole for receiving the rear end portion of the spring 60. The cover part 51 is a plate-like part, and the front end part of the cover part 51 is connected to the part which becomes the rear end part and the lower end part of the second slider 50. The second slider 50 is accommodated in the front part inside the intermediate member 20 so as to be slidable in the front-rear direction.

  In the present embodiment, “a combination of the intermediate member 20, the upper fixing member 30, the second slider 50, the second rotation pin 72, and the pressure receiving pin 73” is an embodiment of the second wing member according to the present invention. Equivalent to. In other words, an embodiment of the second wing member according to the present invention includes the intermediate member 20, the upper fixing member 30, the second slider 50, the second rotation pin 72, and the pressure receiving pin 73. Then, the upper fixing member 30 is fixed to the original cover 3 so that the second wing member is fixed to the second connection object.

  In the present embodiment, the state in which the second wing member is closest to the first wing member is referred to as a “closed state” of the second wing member (a state in which the document pressing plate 3 is closed with respect to the main body 2). The closed state refers to a state in which the rotation angle θ from the closed state of the second wing member to the first wing member is 0 degree. Further, the state in which the second wing member is farthest from the first wing member is referred to as an “open state” of the second wing member. The open state refers to a state in which the original cover 3 is open with respect to the main body 2 and the rotation angle θ is 90 degrees.

  The spring 60 is a metal winding spring (compression spring), which is an embodiment of the biasing member according to the present invention. The spring 60 is accommodated in the intermediate member 20.

  The rear end portion of the spring 60 is inserted into a spring receiving hole formed in the first slider 40 and comes into contact with the bottom surface of the spring receiving hole. Further, the front end portion of the spring 60 is inserted into a spring receiving hole formed in the second slider 50 and comes into contact with the bottom surface of the spring receiving hole.

  Due to the urging force generated by the spring 60, that is, the force (elastic force) at which the spring 60 elastically deformed in the compression direction tries to return to its original shape (shape when no external force is acting). Is biased in a direction approaching the first rotation pin 71 in the longitudinal direction of the intermediate member 20, and the second slider 50 is biased in a direction approaching the pressure receiving pin 73 in the longitudinal direction of the intermediate member 20.

  A damper 62 is accommodated in the spring receiving hole formed in the second slider 50. The damper 62 is disposed such that the tip end portion 62 a protrudes toward the first rotation pin 71. The damper 62 generates a reaction force when the tip end portion 62 a receives a pressing force by the pressing protrusion 43 formed in the spring receiving hole of the first slider 40. For this reason, the speed at which the first slider 40 moves due to the reaction force is reduced, and a buffering effect by the damper 62 is generated. The damper 62 is a general fluid damper, and the main body of the damper 62 is fixed at a predetermined position inside the second slider 50.

The cam member 160 is an embodiment of the cam member according to the present invention.
As shown in FIGS. 9 and 10, the cam member 160 is a member formed by bending a metal plate-like member 16 and is fixed to the lower fixing member 110. The cam member 160 includes plate-like upper fixing parts 161 and 161 and plate-like lower fixing parts 162 and 162 as fixing parts. And it comprises the curved plate part 163 arrange | positioned between each upper side fixing part 161 * 161 and lower side fixing part 162 * 162. As shown in FIG. 9, plate-like pressed portions 164 and 164 that protrude outward in the left-right direction are formed at the upper rear portion of the cam member 160 by bending the upper fixing portions 161 and 161. That is, the pressed portions 164 and 164 are disposed on the lower fixing member 110 by the cam member 160.

  When the cam member 160 is formed, as shown in FIG. 10, the plate-like member 16 is cut so that the upper fixing portions 161 and 161 and the lower fixing portions 162 and 162 are formed at the four corners of the rectangle. Then, the upper fixing portions 161 and 161 and the lower fixing portions 162 and 162 are bent 90 degrees on the same side of the plate-like member 16, and the rectangular central portion (the dotted hatched portion in FIG. 10) is bent 180 degrees. By forming the portion 163, the cam member 160 is formed as shown in FIG. Further, the pressed portions 164 and 164 are formed by bending the end portions of the upper fixing portions 161 and 161 outward by 90 degrees.

  The upper fixing portions 161 and 161 and the lower fixing portions 162 and 162 are fixed to the side plates 112 and 112 that support the first rotation pin 71 in the lower fixing member 110. Specifically, insertion holes 161a and 161a are formed in the upper fixing portions 161 and 161, respectively. As shown in FIGS. 5 to 7, the inner peripheral shape of the insertion holes 161 a and 161 a is formed to be substantially the same diameter as the outer peripheral shape of the first rotation pin 71. Then, the upper fixing portions 161 and 161 are fixed to the side plates 112 and 112 by inserting the first rotation pin 71 into the insertion holes 161a and 161a.

  The lower fixing portions 162 and 162 are respectively formed with second locking portions 162a and 162a whose inner peripheral portions are semicircular and whose diameter is smaller than that of the upper fixing portions 161 and 161. As shown in FIGS. 5 to 7, the inner peripheral shape of the second locking portions 162 a and 162 a is formed to have substantially the same diameter as the outer peripheral shape of the locking portion 112 a protruding from the side plates 112 and 112. Then, the lower fixing portions 162 and 162 are fixed to the side plates 112 and 112 by locking the second locking portions 162a and 162a to the locking portions 112a.

  In the present embodiment, when the cam member 160 is attached to the lower fixing member 110, the fixing hole 162 b is opened so as to be in the same position as the fixing hole 112 b of the side plate 112 in the lower fixing portion 162. The cam member 160 can be firmly fixed to the lower fixing member 110 by inserting a fixing tool such as a bolt (not shown) through the fixing hole 112b and the fixing hole 162b and fastening with a nut or the like.

  When the cam member 160 is attached to the lower fixing member 110, as shown in FIGS. 5 to 7, the curved plate portion 163 is directed forward (to the side of the second rotation pin 72 in the present embodiment). Arranged. In other words, the curved plate portion 163 is bent around an axis parallel to the first rotation pin 71 so that the first slider 40 member side has a convex shape when the second wing member is in the closed state. It is. The plate-like pressed portions 164 and 164 that protrude outward in the left-right direction are arranged so as to extend above the side plates 112 and 112 of the lower fixing member 110. And the to-be-pressed parts 164 * 164 are arrange | positioned in the same position as the recessed part 42 formed in the 1st slider 40 in the left-right direction.

  When the cam member 160 is attached to the lower fixing member 110 and the second wing member is in the closed state, the cam contact surface 41 of the first slider 40 contacts the curved plate portion 163 of the cam member 160 and the second The slider 50 contacts the outer peripheral surface of the pressure receiving pin 73.

  As a result, due to the elastic force generated in the spring 60, the intermediate member 20 (and thus one embodiment of the second wing member according to the present invention) opens with respect to the lower fixing member 110 (in this embodiment, as viewed from the right side). The upper fixing member 30 is biased so as to rotate counterclockwise (in the counterclockwise direction), and the upper fixing member 30 rotates in the direction closing with respect to the intermediate member 20 (in the present embodiment, the counterclockwise direction when viewed from the right side). It is energized to move. At this time, the tip 62a of the damper 62 is pressed by the pressing protrusion 43 of the first slider 40 and is pushed into the main body.

  In the present embodiment, when the rotation angle θ from the closed state of the second wing member to the first wing member is in the first region from 0 degree to the first predetermined angle φ1 (when 0 degree ≦ θ ≦ φ1) ), The second wing member is rotated in a direction (an anticlockwise direction when viewed from the right side) with respect to the first wing member by an elastic force generated in the spring 60. In the present embodiment, the first predetermined angle φ1 is set to 60 degrees (rotation angle θ = first predetermined angle φ1 = 60 degrees) as shown in FIG. The first predetermined angle φ1 can be set to an angle other than 60 degrees.

In the present embodiment, a rotational force that attempts to close the hinge 100 due to the weight of the original cover 3 fixed to the upper fixing member 30 (the intermediate member 20 is watched with respect to the lower fixing member 110 in a right side view). And a rotational force for opening the hinge 100 due to the biasing force of the spring 60 (counterclockwise in the right side view of the intermediate member 20 with respect to the lower fixing member 110). The shape of the cam contact surface 41 of the first slider 40 is determined in advance so that the rotational force of the first slider 40 is substantially balanced.
With this configuration, when the operator releases his / her hand from the original pressure plate 3 in the range of the rotation angle θ of the original pressure plate 3 relative to the main body 2 of the multifunction machine 1 from 0 degree to φ1, the rotation is performed. The moving angle θ is maintained.

  In the present embodiment, when the second wing member is opened, the rotation angle θ of the second wing member from the closed state with respect to the first wing member is changed from the first predetermined angle φ1 to the second predetermined angle. When in the second region up to φ2 (when φ1 <θ ≦ φ2), as shown in FIGS. 6 to 8, the pressing portion 42a of the first slider 40 abuts on the pressed portion 164 of the cam member 160, The first slider 40 compresses the spring 60. The intermediate member 20 (and thus one embodiment of the second wing member according to the present invention) is closed with respect to the lower fixing member 110 by the elastic force generated in the spring 60 (in this embodiment, the right side surface). It is biased to rotate in a clockwise direction as viewed. In the present embodiment, the second predetermined angle φ2 is set to 90 degrees (rotation angle θ = second predetermined angle φ2 = 90 degrees) as shown in FIG. Note that the second predetermined angle φ2 can be set to an angle other than 90 degrees.

  Further, when the rotation angle θ is in the second region from the first predetermined angle φ1 to the second predetermined angle φ2, the pressing portion 42a formed in the concave portion 42 of the first slider 40 contacts the pressed portion 164. The cam contact surface 41 of the first slider 40 is separated from the curved plate portion 163 of the cam member 160. As a result, the biasing force of the spring 60 acts on the cam member 160 via the first slider 40, so that the rotational force (the intermediate member 20 is fixed to the lower fixing member) that attempts to close the hinge 100 due to the biasing force of the spring 60. Rotational force to rotate clockwise with respect to 110 in the right side view acts on the hinge 100.

  According to the hinge 100 according to the present embodiment, the rotation angle (the rotation angle of the second wing member from the closed state with respect to the first wing member) θ with respect to the main body 2 of the original cover 3 is greater than the first predetermined angle φ1. In the second region that also becomes larger, the second wing member is biased in the direction of turning in the closing direction. As a result, when the user tries to open the second wing member (document pressing plate 3) to the maximum rotation angle during normal use of the hinge 100, if the user tries to open it to the first predetermined angle φ1 or more, Resistance is received by the biasing force of the spring 60. For this reason, it is possible to restrict the user from opening the second wing member (document pressing plate 3) to the maximum rotation angle. Moreover, in this embodiment, in order to regulate the rotation angle of a 2nd wing member, the mechanism which attaches / detaches regulation members, such as a regulation pin, from the hinge 100 is not provided. For this reason, it is not necessary to adjust the regulating member during maintenance, and the main maintenance work can be simplified.

  Further, according to the hinge 100 according to the present embodiment, when the rotation angle θ becomes the second predetermined angle φ2, as shown in FIG. 8, the contact between the pressing portion 42a and the pressed portion 164 passes, A straight line orthogonal to the pressing portion 42 a passes through the center of the first rotation pin 71. Thus, when the rotation angle θ becomes the second predetermined angle φ2, the force applied from the pressing portion 42a to the pressed portion 164 is applied toward the center of the first rotation pin 71. The urging force for rotating the two-wing member is zero. As a result, when the service person performs maintenance or the like on the office equipment, the document crimping plate 3 is kept stationary with respect to the main body 2 by opening the rotation angle θ to the second predetermined angle φ2. Is possible. In the present embodiment, the second predetermined angle φ2 is set to 90 degrees. However, even when the second predetermined angle φ2 is set to about 100 degrees and the weight of the original cover 3 is taken into consideration, the original cover 3 is stationary. A configuration is also possible.

  Moreover, according to the hinge 100 which concerns on this embodiment, the to-be-pressed parts 164 * 164 are formed by bending the edge part of the upper side fixing parts 161 * 161 in the cam member 160 90 degree | times outside. With this configuration, it is possible to adjust the urging force generated when the pressed portions 164 and 164 and the pressing portion 42a abut only by replacing the cam member 160. In this embodiment, the pressed parts 164 and 164 are formed by bending the upper fixing parts 161 and 161 of the cam member 160, but the pressed parts are formed by bending the side plates 112 and 112 of the lower fixing member 110. It is also possible.

20 Intermediate member (part of the second wing member)
21 Second side plate 30 Upper fixing member (part of second wing member)
40 First slider (sliding member)
42a Pressing part 50 Second slider (part of the second wing member)
60 Spring (biasing member)
71 First rotation pin (rotation shaft)
110 Lower fixing member (first wing member)
160 Cam member 161 Upper fixed part (part of fixed part)
162 Lower fixed part (part of fixed part)
163 Curved plate part 164 Pressed part

Claims (4)

A first wing member fixed to the first connection object;
A cam member fixed to the first wing member;
A pressed portion disposed in the first wing member;
A second fixed to the second connection object and rotatably connected to the first wing member via a rotation shaft, and transitions between an open state and a closed state with respect to the first wing member. A wing member;
Inside the second wing member, a cam receiving portion that is movably accommodated in a direction approaching the cam member and in a direction away from the cam member and that can contact the cam member; A pressing member capable of contacting, and a slide member formed;
By urging the slide member in a direction approaching the cam member, the slide member is brought into contact with the cam member, and a rotation angle of the second wing member with respect to the first wing member from a closed state is A biasing member for rotating the second wing member in a direction to be in an open state with respect to the first wing member in a first region from 0 degree to a first predetermined angle;
In the second region from the first predetermined angle to a second predetermined angle larger than the first predetermined angle, the pressing portion abuts on the pressed portion, and the slide member is A hinge that receives an urging force in a direction in which the second wing member is closed with respect to the first wing member by compressing the urging member.   The hinge according to claim 1, wherein the urging force becomes zero when the rotation angle becomes the second predetermined angle. The cam member is formed by bending a plate-like member, and is disposed between the fixed portion fixed to two side plates that support the rotating shaft in the first wing member, and the fixed portion. A curved plate portion bent around an axis parallel to the rotation axis so that the side of the slide member is convex when the second wing member is in a closed state,
The hinge according to claim 1, wherein the pressed portion is formed by bending the fixing portion. The first wing member includes two side plates that support the rotating shaft,
The hinge according to claim 1, wherein the pressed portion is formed by bending the side plate.

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