JP6690086B2 - Hinge - Google Patents

Description

  The present invention relates to a hinge for connecting a second connection target to a first connection target so as to be able to be opened and closed, for example, to connect a document pressure plate of the office device to the main body of the office device so as to be opened and closed.

  2. Description of the Related Art Conventionally, most office equipment such as copiers, facsimiles, scanners, etc. used in offices have an original reading section (contact glass) on the upper surface of the main body and an original pressure plate for covering the original reading section. . The document pressure plate is configured to bring the document placed on the document reading unit into close contact with the document reading unit and hold 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, a main body portion, a rotating portion rotatably connected to the main body portion, a cam portion formed on the rotating portion, and a housing portion housed in the main body portion. There is known a hinge including a slide member that is moved and a compression spring that biases the slide member to a cam portion (see, for example, Patent Documents 1 and 2).

JP, 2011-112967, A Registered utility model No. 3119401

  According to the hinge described in Patent Document 1, when the first urging member is used to generate the hinge torque, the second urging member is used to close the second connection target object with respect to the first connection target object. It is configured to obtain a buffering effect. Therefore, when the hinge torque required for the hinge is equal to or larger than a predetermined value, the size of the hinge becomes large because the first compression spring, which is the first biasing member, becomes large.

  On the other hand, according to the hinge described in Patent Document 2, two compression springs are arranged in parallel to generate a hinge torque. In this case, the dimension of the cam member in the direction of the rotation axis is increased by two compression springs. Further, since the biasing forces of the two compression springs are applied to different portions in the direction of the rotation axis, when the elastic forces of the respective compression springs change and differ, the cam member twists and rotates with respect to the rotation axis. There was a possibility to do.

  The present invention has been made in view of the above circumstances, and the problem to be solved by the present invention is to reduce the dimension of the hinge in the direction of the rotation axis and to rotate the rotation member with respect to the rotation axis. It is to provide a hinge that is not exposed.

  Below, the means for solving the said subject is demonstrated.

That is, in claim 1, a cylindrical main body portion fixed to the first connection target object and a cylindrical main body portion fixed to the second connection target object and rotatably connected to the main body part via a rotation shaft. A rotary portion having a cam portion formed on the side of the main body portion, and a rotary portion housed in the main body portion so as to be movable in a direction of approaching and separating from the cam portion of the rotary portion; The slide member is inserted between the slide member having a cam surface and the bottom portion of the main body, and the slide member is urged in a direction approaching the cam portion to move the slide member. A hinge including a compression spring to be brought into contact with a cam portion, wherein the number of the slide members is one, and the compression spring has a first compression spring in order from a side closer to the rotation shaft, and The second compression springs are arranged side by side, and the first compression spring and the It is intended to urge the slide member in two compression springs.

The groove portion is formed in one of the cam surface and the cam portion in a direction orthogonal to the rotation axis, and the other portion is formed with a rib that can be inserted into the groove portion. side of the groove is the is composed of a plane parallel to a direction perpendicular to the rotation axis, the side surface of the rib is one that consists in a plane parallel to the direction orthogonal to the rotation axis.

  In Claim 3, The said cam part and the said cam surface contact | abut at the position farther from the said rotation axis than the 1st compression spring in the direction where the said 1st compression spring and the said 2nd compression spring are located in a line. Is.

  The slide member according to claim 4, wherein the length in the axial direction of the rotating shaft is shorter than the length in the direction in which the first compression spring and the second compression spring are lined up. Is.

INDUSTRIAL APPLICABILITY The hinge according to the present invention has an effect that the size in the rotation axis direction can be reduced and the rotation member is not twisted with respect to the rotation axis.

The left side view showing the compound machine provided with the hinge concerning a first embodiment. The left side view showing the hinge concerning a first embodiment. The front view which shows the hinge which concerns on 1st embodiment. Sectional drawing in the closed state of the hinge which concerns on 1st embodiment. Sectional drawing in the opened state of the hinge which concerns on 1st embodiment. Sectional drawing in the closed state of the hinge which concerns on 2nd embodiment. Sectional drawing in the open state of the hinge which concerns on 2nd embodiment.

Hereinafter, a multifunction machine 1 which is an office machine including a hinge 100 according to the first embodiment of the present invention will be described with reference to FIG.
The multi-function machine 1 includes a main body 2 and a document pressure plate 3. In the present embodiment, the multifunction device 1 is configured to include the hinge 100, but another office device different from the multifunction device 1 may be configured to include the hinge 100.

The main body 2 is an embodiment of the main body portion 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 arranged 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 multifunction machine 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 device is arranged below the document reading device. 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, for example, a liquid crystal panel, and displays information related to the operation status of the multi-function peripheral 1.
The input device is composed of, for example, buttons, switches, etc., 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 arranged on the front part of the upper surface of the main body 2.

The original pressing plate 3 is an embodiment of the rotating portion according to the present invention.
The document pressure plate 3 presses (compresses) 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 the target position).
The document pressure 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 originals stored in a stack in a pre-reading original storage tray one by one and places them on a predetermined reading position on the original reading device. After the document reading device finishes reading the document, the ADF conveys the document placed at the reading position to the document storage tray after reading.

“Office equipment” refers to an apparatus having at least a function of reading a document (obtaining image information of the document).
Specific examples of the office equipment include (a) a scanner having a function of reading a document and a function of transmitting image information related to the read document to another device (for example, a personal computer), (b) a function of reading the document, A fax having a function of transmitting image information related to a read document to another device through a communication line and a function of printing out image information acquired from another device, (c) a function of reading a document, and a read document Examples thereof include a copier having a function of printing out image information related to (3), (d) a scanner, a fax machine, and a multifunction machine having a function as a copier.

  In the following description, the rotation angle θ of the original pressure plate 3 when the original pressure plate 3 is closed (when the lower surface of the original pressure plate 3 is in contact with the upper surface of the main body 2) (more precisely, the main body). The rotation angle θ of the document pressure plate 3 with respect to 2 is set to “0 °” so that the rotation angle θ increases (the rotation angle θ becomes positive) when the document pressure plate 3 rotates in the opening direction. The rotation angle θ of the original cover 3 is defined (see FIG. 1).

The hinge 100 will be described below with reference to FIGS. 1 to 5.
As shown in FIG. 1, the hinge 100 rotatably connects the document pressure plate 3 of the multifunction machine 1 to the main body 2. Specifically, the cylindrical main body 10 is fixed to the main body 2 of the multifunction machine 1, and the rotating portion 30 is fixed to the original pressure plate 3 of the multifunction machine 1, so that the original pressure plate 3 is fixed to the main body 2. It is connected so as to be rotatable.

  In the present embodiment, when the document pressure plate 3 is closed (when the rotation angle θ of the document pressure plate 3 is 0 °), the “rotation part 30 is closed” (see FIGS. 2 and 4). When the document pressure plate 3 is open (when the rotation angle θ of the document pressure plate 3 is larger than 0 °), the “rotation part 30 is in the open state” (see FIG. 5).

  As shown in FIGS. 2 to 5, the hinge 100 is rotatably connected to the main body 10 and the upper rear end of the main body 10 by the rotary shaft 15, and the main body 10 side (the closed state of the rotary unit 30). (A lower side in FIG. 2), a rotating portion 30 having a cam portion 36 formed therein, and a slide member housed movably in the main body portion 10 so as to be movable in a direction in which the cam portion 36 comes close to and away from the cam portion 36. 40, a first compression spring 51 and a second compression spring 52, which are compression springs interposed between the slide member 40 and the bottom of the main body 10, and the like.

  For the sake of convenience, the vertical direction, the front-back direction, and the left-right direction of the multifunction machine 1 when the original pressure plate 3 is closed with respect to the main body 2 (when the rotation angle θ = 0 °) will be used as a reference (the original pressure plate 3). The shape of each member that constitutes the hinge 100 in which the vertical direction, the front-back direction, and the left-right direction of the multifunction machine 1 when the hinge 100 is closed with respect to the main body 2 correspond to the vertical direction, the front-back direction, and the left-right direction of the hinge 100, respectively. Will be explained.

  The main body 10 is a tubular member having an open upper side, and is fixed to the main body 2 of the multifunction machine 1. The main body 10 is a resin member that is injection molded. Inside the main body portion 10, spring fixing portions 11 and 12 that project upward at the bottom portion are formed. In addition, the main body portion 10 includes support plates 14 that project upward on both left and right sides of the rear upper end portion. The main body part 10 supports the rotary shaft 15 by inserting the rotary shaft 15 into the support plates 14 and 14.

The rotating portion 30 is a member in which a cam portion 36 that protrudes downward in the closed state is formed, and is rotatably supported by the rotating shaft 15 with respect to the main body portion 10. The cam portion 36 contacts the slide member 40 that is biased by the compression springs (the first compression spring 51 and the second compression spring 52).
The rotating portion 30 is a resin member that is injection molded. A fixing portion 31 for fixing the original pressure plate 3 is formed on the rotating portion 30.

  As shown in FIGS. 4 and 5, the slide member 40 is a resin member that is slidably accommodated inside the main body 10. The slide member 40 is a bottomed cylindrical member having two housing holes (first housing hole 45 and second housing hole 46) opened downward. Spring fixing portions 47 and 48 projecting downward are formed on the upper bottom surfaces of the first accommodation hole portion 45 and the second accommodation hole portion 46. A cam surface 43 is formed on the upper surface of the slide member 40, which is the side of the cam portion 36.

  A first compression spring 51 and a second compression spring 52, which are compression springs, are inserted between the slide member 40 and the bottom of the main body 10. Specifically, as shown in FIGS. 4 and 5, the first compression spring 51 and the second compression spring 52 are arranged side by side in order from the side closer to the rotating shaft 15. The first compression spring 51 and the second compression spring 52 are fixed by inserting the spring fixing portions 11 and 47 and the spring fixing portions 12 and 48 from above and below, respectively. In this way, the lower ends of the first compression spring 51 and the second compression spring 52 are in contact with the bottom of the main body 10, and the upper ends of the first compression spring 51 and the second compression spring 52 are in the first accommodation hole 45 and the second accommodation hole 46 of the slide member 40. It is housed and abutted on the bottom surface of each.

  As described above, by inserting the first compression spring 51 and the second compression spring 52 between the body portion 10 and the slide member 40, the urging force of the first compression spring 51 and the second compression spring 52 causes the rotation. A force is applied in the rotation direction in which the moving unit 30 is separated from the main body unit 10. Specifically, as shown in FIG. 5, the force from the first compression spring 51 and the second compression spring 52 is transmitted to the cam portion 36 arranged in the rotating portion 30 via the cam surface 43 of the slide member 40. To be As a result, the front portion of the rotating portion 30 is rotated in the direction of lifting upward.

  According to the hinge 100 according to the present embodiment, as described above, the first compression spring 51 and the second compression spring 52 are arranged side by side from the side closer to the rotating shaft 15, and the first compression spring 51 and The second compression spring 52 is used to generate a hinge torque. As a result, the thickness of each compression spring is reduced while sufficient hinge torque is exerted in the hinge 100 by the urging forces of the two compression springs (the first compression spring 51 and the second compression spring 52). The dimension of the rotating portion 30 in the direction of the rotating shaft 15 (left-right direction) can be suppressed to the thickness of one compression spring. Further, since the urging forces of the first compression spring 51 and the second compression spring 52 are applied to the same portion (substantially the central portion) of the rotating shaft 15, when the elastic forces of the first compression spring 51 and the second compression spring 52 are different from each other. However, the rotating portion 30 does not twist and rotate with respect to the rotating shaft 15.

  Further, in the hinge 100 according to the present embodiment, as shown in FIGS. 3 to 5, the cam surface 43 of the slide member 40 is formed with the groove portion 43a in the front-back direction orthogonal to the rotating shaft 15, and the cam portion 36 is formed. A rib 36a that can be inserted into the groove 43a is formed.

  In the present embodiment, the configuration as described above prevents foreign matter from being caught between the cam portion 36 and the cam surface 43 by the rib 36a when the rotating portion 30 is opened as shown in FIG. To prevent. In the present embodiment, the groove 43a is formed on the cam surface 43 and the rib 36a is formed on the cam portion 36. However, the rib is formed on the cam surface 43 and the groove is formed on the cam portion 36. It is also possible.

  Next, the hinge 200 according to the second embodiment of the present invention will be described with reference to FIGS. 6 and 7. In the following, description of the parts common to the hinge 100 according to the first embodiment will be omitted, and different parts will be mainly described.

  Similar to the hinge 100, the hinge 200 also rotatably connects the document pressure plate 3 of the multifunction machine 1 to the main body 2. Specifically, the tubular main body 110 is fixed to the main body 2 of the multifunction machine 1, and the rotating portion 130 is fixed to the original pressure plate 3 of the multifunction machine 1, so that the original pressure plate 3 is fixed to the main body 2. It is rotatably and slidably connected to each other (see FIG. 1).

  As shown in FIGS. 6 and 7, the hinge 200 is rotatably connected to the main body 110 and the rear upper end of the main body 110 by a rotary shaft 115, and the hinge 200 is on the main body 110 side (the closed state of the rotary unit 130). Inside the main body 110 such that the first cam 135 and the second cam 136 are formed on the lower side of the main body 110, and the rotary 130 and the cam 136 are movable toward and away from each other (vertical direction). A compression spring is inserted between the first slide member 141 and the second slide member 142, the first slide member 141 and the second slide member 142, which are slide members that are movably accommodated, and the bottom of the main body 110. The first compression spring 151 and the second compression spring 152 are provided. Specifically, as shown in FIGS. 6 and 7, the first cam portion 135 and the second cam portion 136 are arranged side by side from the side closer to the rotation shaft 115 on the lower surface of the rotation portion 130. Further, the first slide member 141 and the second slide member 142 are arranged side by side in order from the side near the rotation shaft 115 inside the main body 110.

  The main body 110 is a tubular member having an open upper side, and is fixed to the main body 2 of the multifunction machine 1. The main body 110 is a resin member that is injection molded. An inner wall 113 that divides the internal space of the main body 110 into a front chamber 110a and a second chamber 110b is formed at a substantially central portion in the front-rear direction inside the main body 110. A spring fixing portion 111 protruding upward is formed at the bottom of the first chamber 110a, and a spring fixing portion 112 protruding upward is formed at the bottom of the second chamber 110b. Further, the main body 110 includes support plates protruding upward on both left and right sides of the rear upper end, and the main shaft 110 supports the rotary shaft 115 by inserting the rotary shaft 115 into the support plate.

  The rotating portion 130 is a member in which a first cam portion 135 and a second cam portion 136, which are downwardly projecting cam portions in the closed state, are formed, and are rotatable with respect to the main body portion 110 by the rotating shaft 115. Is pivotally supported.

  As shown in FIGS. 6 and 7, the first slide member 141 is a resin member that is slidably accommodated inside the first chamber 110a. The first slide member 141 is a bottomed cylindrical member having a first housing hole portion 145 opened downward. A spring fixing portion 147 protruding downward is formed on the upper bottom surface of the first accommodation hole portion 145. A first cam surface 143 is formed on the upper surface of the first slide member 141 on the first cam portion 135 side.

  As shown in FIGS. 6 and 7, the second slide member 142 is a resin member that is slidably accommodated inside the second chamber 110b. The second slide member 142 is a bottomed tubular member having a second housing hole portion 146 opened downward. A spring fixing portion 148 protruding downward is formed on the upper bottom surface of the second accommodation hole portion 146. A second cam surface 144 is formed on the upper surface of the second slide member 142, which is the second cam portion 136 side.

A first compression spring 151 is inserted between the first slide member 141 and the bottom of the first chamber 110a. A second compression spring 152 is inserted between the second slide member 142 and the bottom of the second chamber 110b. Specifically, as shown in FIGS. 6 and 7, the first compression spring 151 and the second compression spring 152 are arranged side by side in order from the side closer to the rotating shaft 115.
The first compression spring 151 and the second compression spring 152 are fixed by inserting the spring fixing portions 111 and 147 and the spring fixing portions 112 and 148 from above and below, respectively.

  In this way, the lower end of the first compression spring 151 contacts the bottom of the first chamber 110a, and the upper end of the first compression spring 151 is housed in the first housing hole 145 of the first slide member 141 and contacts the bottom. The first cam portion 135 contacts the first cam surface 141a of the first slide member 141 that is biased by the first compression spring 151.

Further, the lower end portion of the second compression spring 152 abuts on the bottom portion of the second chamber 110b, and the upper end portion is accommodated in the second accommodating hole portion 146 of the second slide member 142 and abuts on the bottom surface. The second cam portion 136 is the second cam surface 14 of the second slide member 142 that is biased by the second compression spring 152.
It comes into contact with 2a.

  As described above, the first compression spring 151 is inserted between the bottom of the first chamber 110a and the first slide member 141, and the second compression spring 152 is inserted between the bottom of the second chamber 110b and the second slide member 142. With the insertion of, the urging force of the first compression spring 151 and the second compression spring 152 exerts a force in the rotation direction in which the rotation unit 130 is separated from the main body unit 110. Specifically, as shown in FIG. 7, the force from the first compression spring 151 is transmitted to the first cam portion 135 disposed on the rotating portion 130 via the first cam surface 143 of the first slide member 141. To be Further, the force from the second compression spring 152 is transmitted to the second cam portion 136 arranged on the rotating portion 130 via the second cam surface 144 of the second slide member 142. As a result, the front part of the rotating part 130 rotates in the direction of lifting upward.

  According to the hinge 200 of this embodiment, as described above, the first cam portion 135 and the second cam portion 136 are formed in order from the side closer to the rotation shaft 115 on the lower surface of the rotation portion 130. In addition, a first slide member 141 and a second slide member 142 are sequentially arranged on the main body 110 from the side closer to the rotation shaft 115. Then, the first cam portion 135 and the second cam portion 136 contact the first cam surface 143 of the first slide member 141 and the second cam surface 144 of the second slide member 142, respectively, to generate a hinge torque. There is.

  As a result, the hinge 200 exerts sufficient hinge torque by the urging force of the two compression springs (the first compression spring 151 and the second compression spring 152), and at the same time reduces the thickness of each compression spring. The dimension of the rotating portion 130 in the direction of the rotating shaft 115 (left-right direction) can be suppressed to the thickness of one compression spring. Further, since the urging forces of the first compression spring 151 and the second compression spring 152 are applied to the same portion (substantially the central portion) of the rotary shaft 115, the elastic forces of the first compression spring 151 and the second compression spring 152 are different. However, the rotating unit 130 does not twist and rotate with respect to the rotating shaft 115.

  In addition, the biasing force from the first compression spring 151 and the second compression spring 152 is received at the two positions of the first cam part 135 and the second cam part 136 of the rotating part 130, so that the cam part at one position is provided. It is possible to reduce the surface pressure generated at each contact portion, as compared with the structure in which the biasing force is applied at. That is, by distributing the force applied to the rotating unit 130 at two locations, it is possible to suppress the occurrence of tilt or wobbling when the rotating unit 130 rotates.

  Further, in the hinge 200 according to the present embodiment, as shown in FIGS. 6 and 7, a groove portion 144a is formed on the second cam surface 144 of the second slide member 142 in the front-rear direction orthogonal to the rotating shaft 115. The second cam portion 136 is formed with a rib 136a that can be inserted into the groove portion 144a.

  With the above-described configuration in the present embodiment, the rib 136a causes foreign matter to be present between the second cam portion 136 and the second cam surface 144 when the rotating portion 130 is opened as shown in FIG. Is prevented from getting caught. In the present embodiment, the groove portion 144a is formed on the second cam surface 144 and the rib 36a is formed on the second cam portion 136, but the rib is formed on the second cam surface 144 and the second cam portion 136 is formed. It is also possible to form a groove in the groove.

10 Main Body 15 Rotating Shaft 30 Rotating Part 40 Slide Member 51 First Compression Spring 52 Second Compression Spring 100 Hinge

Claims (4)

A tubular body fixed to the first connection object,
A rotation part fixed to the second connection target and rotatably connected to the body part via a rotation shaft, and a cam part formed on the side of the body part.
A slide member that is housed in the main body portion so as to be movable in a direction of approaching and separating from the cam portion of the rotating portion, and a cam surface is formed on the side of the cam portion;
A compression spring that is inserted between the slide member and the bottom of the main body, and urges the slide member toward the cam portion to bring the slide member into contact with the cam portion. A hinge comprising:
The slide member is one,
The compression spring is such that a first compression spring and a second compression spring are arranged side by side in order from the side closer to the rotation axis, and the slide member is attached to the first compression spring and the second compression spring. Energize, hinge. A groove portion is formed on one of the cam surface or the cam portion in a direction orthogonal to the rotation axis, and a rib that can be inserted into the groove portion is formed on the other,
The side surface of the groove portion is formed by a surface parallel to a direction orthogonal to the rotation axis,
Side surface of the rib Ru consists of a plane parallel to the direction orthogonal to the rotation axis,
The hinge according to claim 1. The cam portion and the cam surface abut at a position farther from the rotation shaft than the first compression spring in a direction in which the first compression spring and the second compression spring are lined up,
The hinge according to claim 1 or 2. The slide member is configured such that the length in the axial direction of the rotating shaft is shorter than the length in the direction in which the first compression spring and the second compression spring are arranged.
The hinge according to any one of claims 1 to 3.

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