JP6572471B2 - Hinge - Google Patents

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. A second wing member, a first slide member and a second slide member that are movable in a direction approaching the cam member and a direction away from the cam member, and a first slide member and a second slide member. A hinge including an urging member to be inserted is known (see, for example, Patent Document 1 and Patent Document 2).

  In the hinge described in the above-mentioned patent document, in order to prevent the document from becoming dirty due to the grease dripping downward from the spring or the like housed inside or the document adhering to the slider sliding portion of the hinge. In addition, the cover is provided on the hinge.

  Specifically, according to the hinge described in Patent Document 1, the cover portion extends from both the first slider and the second slider toward the rotating shaft. Moreover, according to the hinge of the said patent document 2, it is set as the structure which arrange | positions a cover member in the vicinity of a 1st slider.

JP 2007-212910 A JP 2014-137543 A

  However, according to the hinge described in Patent Document 1, since the cover portion extends from both the first slider and the second slider, it causes an increase in the processing cost of the parts. In addition, according to the hinge described in Patent Document 2, since a cover member is separately provided in the vicinity of the first slider, the assembly process is complicated, which causes an increase in manufacturing cost of the hinge.

  This invention is made | formed in view of the above situations, and the subject which this invention tends to solve is providing a hinge provided with a cover part with easy processing and an assembly | attachment.

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

That is, in claim 1, the first wing member fixed to the first connection target, the cam member fixed to the first wing member, and the first wing fixed to the second connection target. A second wing member that is pivotally connected to the member via a pivot shaft and pivots between an open state and a closed state with respect to the first wing member; and the pivot in the second wing member A pressure receiving member penetrating on the opposite side of the shaft, a first slide member that is accommodated in the second wing member and is movable in a direction approaching the cam member and a direction away from the cam member, and the second A second slide member that is movable in a direction approaching the pressure receiving member and a direction away from the pressure receiving member while being housed in the wing member, and is interposed between the first slide member and the second slide member, By urging the first slide member in a direction approaching the cam member, the slide member is brought into contact with the cam portion of the cam member, and at the same time, the second slide member is moved in a direction approaching the pressure receiving member. An urging member that urges the second slide member against the pressure receiving member, wherein the second wing member is the first wing member. A plate-like cover portion extending toward the first slide member is formed at a lower portion when the second wing member is used with respect to the first wing member. when opening to the limit, the distal end portion of the cover portion is positioned in front of the cam portion, the distal end portion of the cover portion is located lower than the lower end of the cam portion, the second wing member When the first wing member is closed, the cover portion enters below the portion of the cam member where the cam portion and the first slide member abut, and the tip of the cover portion rotates. It is located below the shaft .

  The hinge which concerns on this invention has an effect that it becomes possible to provide a cover part with easy processing and an assembly | attachment.

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 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.

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 When the rotation angle θ of the original cover 3 with respect to 2 is set to “0 °” and the original cover 3 is rotated in the opening direction, the rotation angle θ increases (the rotation angle θ becomes positive). The rotation angle θ of the original cover 3 is defined as follows (see FIG. 1).

Below, the hinge 100 which is one Embodiment of the hinge based on this invention is demonstrated using FIGS. 1-9.
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 °), the vertical direction, the front / rear direction, and the left / right direction of the multifunction machine 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, 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 side plates 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. The A through-hole for inserting the first rotation pin 71 is opened in the left-right direction at the rear part of the intermediate member 20.

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 intermediate member 20 and a through hole of the bearing 74 fitted to the side plate 112 of the lower fixing member 110. 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 an embodiment of the pressure receiving member according to the present invention. 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. The pressure receiving pin 73 is pivotally supported by the upper fixing member 30 by penetrating the pressure receiving pin 73 on the opposite side of the first fixing pin 71 in 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 first 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 from the lower half of the rear surface, and a rotating pin support surface 42 formed at the upper half 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 second slider 50 is an embodiment of the second slide member according to the present invention. The second slider 50 of this embodiment is made of a resin material.
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.

  The second slider 50 is formed with a plate-like cover portion 51 extending toward the first slider 40 at the lower portion (lower portion in FIGS. 2 and 5) when the second wing member is in the closed state. Yes. As shown in FIG. 2, the front end portion 51 a of the cover portion 51 is a cam portion in the cam member 160 when the second wing member is opened to 60 ° with respect to the lower fixing member 110 that is the first wing member. It is configured to be positioned in front of a certain curved plate portion 163. For this reason, when the second wing member is closed with respect to the lower fixing member 110, the cover portion 51 comes into contact with the curved plate portion 163 and the cam contact surface 41 of the first slider 40 as shown in FIG. 5. It goes under the part. In addition, since the cover part 51 is formed to have a lateral width smaller than the interval between the lower fixed parts 162 and 162 of the cam member 160, even if the cover part 51 enters below the curved plate part 163 as shown in FIG. There is no interference with the cam member 160.

  In the present embodiment, the cover portion 51 is formed integrally with the second slider 50. However, the cover portion can be attached to and detached from the second slider by forming the second slider and the cover portion as separate members. You can also. That is, it is also possible to adopt a configuration in which the cover portion is disposed on the second slider by sticking the plate-like cover portion with the second slider adhesive or the like.

  As described above, in the hinge 100 according to the present embodiment, by extending the cover portion 51 from the second slider 50, the grease hangs downward from the first slider 40, the second slider 50, the spring 60, and the like. Prevents getting dirty. Further, the cover unit 51 prevents the original from adhering to the sliding portions of the first slider 40 and the second slider 50 in the hinge 100 and soiling the original.

  Further, in the hinge 100 according to the present embodiment, when the second wing member is opened to 60 ° with respect to the lower fixing member 110, the front end portion 51a of the cover portion 51 is at the lower end of the curved plate portion 163 (in FIG. 6). It is configured to be positioned below line L).

  In the present embodiment, “a combination of the intermediate member 20, the upper fixing member 30, and the second rotation pin 72” corresponds to an embodiment of the second wing member according to the present invention. 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, and the second rotation pin 72. 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 the “closed state” of the second wing member (the state where the document pressing plate 3 is closed with respect to the main body 2 (rotation angle θ = 0 °)), and the state in which the second wing member is farthest from the first wing member is the “open state” of the second wing member (the state where the document pressing plate 3 is open with respect to the main body 2 (rotation angle) θ = 90 °)).

  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. 8 and 9, 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.

  When forming the cam member 160, as shown in FIG. 9, 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 rectangular shape. 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. 9) is bent 180 degrees, By forming the curved plate portion 163 which is a portion, the cam member 160 is formed as shown in FIG. In addition, it is also possible to comprise a cam member with a pin member. In other words, the cam member can be configured by inserting the pin member through the through hole of the side plate 112 of the lower fixing member 110.

  The upper fixing portions 161 and 161 and the lower fixing portions 162 and 162 are detachably locked to the side plates 112 and 112 that support the first rotation pin 71 in the lower fixing member 110. Specifically, first locking portions 161a and 161a each having an inner peripheral portion formed in a substantially semicircular shape are formed in the upper fixing portions 161 and 161, respectively. As shown in FIGS. 5 to 7, the inner peripheral shape of the first locking portions 161 a and 161 a is formed to have substantially the same diameter as the outer peripheral shape of the first rotation pin 71. Then, the upper fixing portions 161 and 161 are locked to the side plates 112 and 112 by locking the first locking portions 161 a and 161 a to the first rotation pin 71.

  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. The lower fixing portions 162 and 162 are locked to the side plates 112 and 112 by locking the second locking portions 162a and 162a to the locking portions 112a.

  As described above, the first locking portions 161a and 161a and the second locking portions 162a and 162a are each formed in a substantially semicircular shape. And since it is the structure which latches the 1st latching | locking part 161a * 161a and the 2nd latching | locking part 162a * 162a to the 1st rotation pin 71 and the latching | locking part 112a, the cam member 160 is with respect to the lower fixing member 110. Can be easily attached and detached.

  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.

  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 of the original cover 3 with respect to the main body 2 of the multifunction machine 1 is in the range from 0 ° to φ ° (when 0 ° ≦ θ ≦ φ °), the upper fixing member 30 Rotational force for closing the hinge 100 due to the weight of the fixed original cover 3 (rotational force for rotating the intermediate member 20 clockwise relative to the lower fixing member 110). And a rotational force for opening the hinge 100 due to the biasing force of the spring 60 (a rotational force for rotating the intermediate member 20 counterclockwise with respect to the lower fixing member 110 in a right side view). The shape of the cam contact surface 41 of the first slider 40 and the like are determined in advance so as to be substantially balanced.
With this configuration, when the operator releases his or her hand from the original pressure plate 3 when the rotation angle θ of the original pressure plate 3 with respect to the main body 2 of the multifunction machine 1 is in the range of 0 ° to φ °, The rotation angle θ is maintained.

In this embodiment, when the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction machine 1 is in the range from φ ° to 90 ° (when φ ° <θ ≦ 90 °), the first slider The rotation pin support surface 42 of the 40 abuts against the outer peripheral surface of the first rotation pin 71, and the movement of the first slider 40 in the direction approaching the cam member 160 is restricted, and the cam of the first slider 40 The contact surface 41 is separated from the curved plate portion 163 of the cam member 160.
Since the cross-sectional shape of the first rotation pin 71 of the present embodiment in the plane perpendicular to the axial direction is circular, the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction machine 1 is from φ ° to 90 °. Even if the range changes, the position of the first slider 40 with respect to the intermediate member 20 and, consequently, the entire length of the spring 60 (strictly, as long as the rotation angle of the upper fixing member 30 with respect to the intermediate member 20 does not change) The urging force) does not change.

Therefore, when the rotation angle θ of the original cover 3 with respect to the main body 2 of the multifunction device 1 is in the range from φ ° to 90 ° (strictly speaking, the rotation of the first slider 40 is caused by the biasing force of the spring 60). (Although a frictional force acts on the contact portion between the moving pin support surface 42 and the outer peripheral surface of the first rotation pin 71), the urging force of the spring 60 is substantially applied to the cam member 160 via the first slider 40. Rotational force that causes the hinge 100 to open due to the urging force of the spring 60 (which rotates the intermediate member 20 to rotate counterclockwise with respect to the lower fixing member 110 in the right side view). Force) does not act on the hinge 100.
Note that the value of φ may slightly vary as a result of adjustment of the biasing force of the spring 60 by the cam member 160 described later.

  According to the hinge 100 according to the present embodiment, the rotation angle θ of the original cover 3 with respect to the main body 2 is configured to be a maximum of 60 ° when the multifunction device 1 is used during normal times other than maintenance. In other words, in hinge 100, the use limit of the second wing member with respect to the first wing member is set to 60 °. In the hinge 100 according to the present embodiment, as shown in FIG. 6, when the second wing member is opened with respect to the first wing member to the limit of use of the hinge 100 (rotation angle θ = 60 °), the cover is covered. The tip 51a of the part 51 is configured to be positioned in front of the cam member 160.

  According to the hinge 100 according to the present embodiment, the cover portion 51 is extended from the second slider 50 as described above. For this reason, compared with the structure which extends a cover part also from the 1st slider 40, a process becomes simple and it becomes possible to suppress a process cost. Moreover, since the cover part 51 is extended from the 2nd slider 50, it is not necessary to provide a cover member separately. That is, since the cover member can be easily provided, it is possible to prevent an increase in the manufacturing cost of the hinge 100 due to an increase in the number of assembly steps. That is, the hinge 100 according to the present embodiment is configured to include the cover portion 51 that can be easily processed and assembled.

  Further, in the hinge 100 according to the present embodiment, when the second wing member is opened to 60 ° with respect to the lower fixing member 110, the front end portion 51a of the cover portion 51 is at the lower end of the curved plate portion 163 (in FIG. 6). It is configured to be positioned below line L). As a result, even when the second wing member is opened to the limit of use of the hinge 100 with respect to the first wing member, the document does not adhere to the curved plate portion 163 which is the cam portion of the cam member 160 and becomes dirty. .

20 Intermediate member (part of the second wing member)
30 Upper fixing member (part of the second wing member)
40 First slider (first slide member)
50 Second slider (second slide member)
51 Cover portion 51a Tip portion 60 Spring (biasing member)
71 First rotation pin (rotation shaft)
73 Pressure receiving pin (Pressure receiving member)
110 Lower fixing member (first wing member)
160 Cam member

Claims (1)

A first wing member fixed to the first connection object;
A cam member fixed to the first wing member;
Pivotally connected to via a pivot shaft to the first wing member is fixed to the second connecting object, the pivots between the open and closed states with respect to the first wing member Two wing members,
A pressure receiving member penetrating on the opposite side of the rotation shaft in the second wing member;
A first slide member that is movable in a direction approaching the cam member and a direction away from the cam member while being accommodated in the second wing member;
A second slide member movable in a direction approaching the pressure receiving member and a direction away from the pressure receiving member while being accommodated in the second wing member;
It is inserted between the first slide member and the second slide member, and urges the first slide member in a direction approaching the cam member so that the slide member contacts the cam portion of the cam member. And a biasing member that abuts the second slide member against the pressure receiving member by biasing the second slide member in a direction approaching the pressure receiving member at the same time,
The second slide member is formed with a plate-like cover portion extending toward the first slide member at a lower portion when the second wing member is in a closed state with respect to the first wing member. ,
When the second wing member is opened with respect to the first wing member to the limit of use of the hinge, the front end portion of the cover portion is positioned in front of the cam portion, and the front end portion of the cover portion is the cam. Located below the lower end of the part ,
When the second wing member is closed with respect to the first wing member, the cover portion enters below a portion of the cam member where the cam portion and the first slide member abut, A hinge whose tip is located below the pivot shaft .

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