JP6615171B2 - Hinge - Google Patents

Description

  The present invention relates to a hinge that rotatably connects two objects to be connected.

  Conventionally, a hinge for connecting two objects to be connected so as to be rotatable is used. In such a hinge, there is known a technique for effectively utilizing a buffering effect by a damper when the second connection object is rotated in a closing direction with respect to the first connection object. For example, an arm hole is opened in the slide member and the arm member is rotatably connected, and the arm member can be brought into contact with the cam and can be brought into contact with the other end of the damper through the arm hole. (For example, refer to Patent Document 1 and Patent Document 2).

JP 2011-247554 A JP 2014-29181 A

  However, as described in the patent document, when the arm member is rotatably disposed on the slide member and the arm member is in contact with the damper, the arm member can be rotated. A rotating shaft or the like is required. That is, the configuration of the entire hinge is complicated, which causes an increase in cost. Moreover, since it is necessary to ensure the space of a structure required in order to rotate an arm member, the shape of the hinge was restrict | limited.

  The present invention has been made in view of the above circumstances, and the problem to be solved by the present invention is to effectively utilize the buffering effect by the damper, and at the same time simplify the configuration to suppress the cost and free the shape. To provide a hinge that can increase the degree.

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

That is, in claim 1, a hinge for rotatably connecting the second connection object to the first connection object, comprising a storage chamber, and a main body fixed to the first connection object; A wing portion that is rotatably connected to one end portion of the main body portion and has a cam portion formed on the main body portion side, and is fixed to the second connection object, and is housed in the housing chamber, and the wing portion A slide member in which a cam receiving portion is formed in a portion facing the cam portion on a surface facing the wing portion, and is housed in the housing chamber. A winding spring that urges the slide member in a direction approaching the wing portion and causes the cam receiving portion to abut on the cam portion to rotate the wing portion in a direction to open with respect to the main body portion, and the housing Housed and fixie And a damper that generates a reaction force when an external force that pushes down the piston rod is applied, and in a state where the rotation angle of the wing portion with respect to the main body portion is smaller than a predetermined angle, the cam portion is An external force that pushes down the piston rod by abutting acts to generate a reaction force of the damper, and the rotation angle of the wing portion relative to the main body portion is smaller than a predetermined angle than the cam receiving portion. The cam portion abuts on the side of the main body portion and the wing portion that are close to the rotation axis and pushes down the piston rod, thereby moving the slide member in a direction away from the wing portion. is intended to increase the amount of shrinkage of the piston rod, wherein the cam portion is in a direction orthogonal to the axis of the pivot shaft, wherein And arm receiving portion abutting part, and the piston rod abutting portion, and has a.

According to a second aspect of the present invention, the cam receiving portion is formed along the axial direction of the rotating shaft, and is formed at least in the axial center portion of the rotating shaft of the slide member .

  According to a third aspect of the present invention, the portion with which the cam portion abuts when an external force that pushes down the piston rod acts on the damper is configured by a surface inclined with respect to the moving direction of the piston rod.

  The present invention effectively uses the buffering effect of the damper in the hinge, and at the same time, has an effect of simplifying the configuration, suppressing the cost, and increasing the degree of freedom of the hinge shape.

The left view which shows the multifunctional machine which comprises the hinge concerning this embodiment. The perspective view which similarly shows a hinge. The left view which similarly shows a hinge. The front view which similarly shows a hinge. The left side sectional view showing the hinge in the closed state. The left side surface sectional view showing the hinge of the open state similarly. The left side sectional view showing the hinge just before the closed state.

  Below, the hinge 10 which concerns on one Embodiment of this invention, and the compound machine 1 by which the hinge 10 is arrange | positioned are demonstrated using FIGS. 1-5. It should be noted that the hinge according to the present invention is not applied only to the multifunction machine, and can connect any other connection object.

  As shown in FIG. 1, the multifunction machine 1 is an embodiment of office equipment, and includes a main body 2, a document pressing plate 3, and a hinge 10. The hinge 10 rotatably connects the document pressing plate 3 to the main body 2 of the multi-function device 1 which is two connection objects in the present embodiment.

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 operations of the document reading device, the printing device, and the ADF.
Further, the control device can store the image information generated by the document reading device and the image information acquired through a line (Internet line or the like) connected to the main body 2.
The printing apparatus is disposed below the document reading apparatus. The printing device prints an image on paper based on the image information stored by the control device.
The display device 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 buttons and switches, for example, 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 at the front end portion of the upper 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 pressing plate 3 presses (presses) 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 (the document reading device and the document reading device). Change the relative position of the
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, and the document reading by the document reading device is completed. Thereafter, the document placed on the document reading device is read and conveyed to the document storage tray.

The “closed state (closed state) of the document crimping plate 3 (with respect to the main body 2)” in the present embodiment refers to a state where the document crimping plate 3 is located near the upper side of the main body 2 as shown in FIG.
In addition, the “open state (relative to the main body 2) of the original cover 3 is open” means that the lower face of the original cover 3 and the lower surface of the main body 2 are moved when the original cover 3 rotates with respect to the main body 2. The state in which the upper surface is separated.

  In addition, the closed state and the open state of the hinge 10 also indicate states corresponding to the closed state and the open state of the original cover 3. That is, the closed state of the hinge 10 refers to a state in which the wing portion 40 extends forward from the case 20 as shown in FIGS. 3 to 5 and the wing portion 40 and the case 20 are close to each other. Further, the open state of the hinge 10 refers to a state in which the wing portion 40 extends upward from the case 20 as shown in FIG. 6 and the wing portion 40 and the case 20 are separated from each other.

  In the following description, as shown in FIG. 1, the rotation angle θ of the original cover 3 with respect to the main body 2 when the original cover 3 is in contact with the main body 2 is set to “0 degree”, and the direction in which the original cover 3 opens. The rotation angle θ of the original cover 3 and the hinge 10 is defined on the assumption that the rotation angle θ increases (the value of the rotation angle θ becomes positive).

  In the following, for the sake of convenience, when the hinge 10 is attached to the multifunction device 1 and the original cover 3 is closed with respect to the main body 2 (when the rotation angle θ of the original press plate 3 with respect to the main body 2 is 0 °). The vertical direction, the front-rear direction, and the left-right direction of the multi-function device 1 when the document crimping plate 3 is closed with respect to the main body 2 are the up-down direction, the front-rear direction, and the left-right direction of the multi-function device 1, respectively. Each member which comprises the hinge 10 is demonstrated as what respond | corresponds to the front-back direction and the left-right direction.

  As shown in FIGS. 2 to 5, the hinge 10 includes a case 20, a slider 31, a winding spring 33, a damper 34, a sliding member 35, a wing portion 40, a rotation pin 50, and the like.

The case 20 is an embodiment of the main body according to the present invention, and the lower part thereof is formed in a hollow cylindrical shape and fixed to the main body 2.
The case 20 of this embodiment is manufactured by integrally molding a resin material.
The wing portion 40 is fixed to the document pressing plate 3 and is rotatably connected to the upper end portion of the case 20 via a rotation pin 50. As a result, the hinge 10 connects the original cover 3 to the main body 2 of the multifunction machine 1 so as to be rotatable. Further, the weight torque generated by the gravity is applied to the wing portion 40 from the original cover 3 in the direction in which the original cover 3 closes (downward).

  As shown in FIGS. 2 to 5, the case 20 is a member having a cylindrical lower portion, and a columnar space surrounded by a side wall and a bottom is formed in the case 20. That is, the case 20 is formed with a slider accommodating chamber 21 having an open upper end and a bottom surface at the lower end.

  On the upper end surface of the case 20, support plates 23, 23 extending upward from both left and right ends are erected, and communication holes 23 a communicating in the left-right direction are opened on the upper portions of the support plates 23, 23. ing. Then, the rotation pin 50 is inserted into the communication hole 23a of the support plate 23 and the rear end portion of the wing portion 40 from the left side. Thereby, the wing part 40 is connected with respect to the case 20 so that rotation is possible.

  A restriction pin 24 is inserted into the support plates 23 and 23 behind the rotation pin 50. The restriction pin 24 restricts the rotation angle of the wing portion 40 to a maximum of about 60 degrees as shown in FIG. By changing the position where the restriction pin 24 is disposed, the maximum rotation angle of the wing portion 40 can be changed. Further, even when the wing portion 40 is detached from the case 20 due to the turning pin 50 being removed, the slider 31 is prevented from jumping out of the case 20.

  The wing portion 40 is a member whose one end portion (rear end portion in FIGS. 3 and 5) is rotatably connected to the upper end portion of the case 20 by a rotation pin 50. A slider cam 41, which is a cam portion corresponding to the slider accommodating chamber 21, is disposed on the surface on the case 20 side (the lower surface in FIGS. 3 and 5) of the wing portion 40 when the original cover 3 is closed. It is formed in a curved surface shape protruding.

  The wing part 40 of this embodiment is manufactured by integrally molding a resin material. In addition, it can also be set as the structure which raised the intensity | strength by reinforcing the surface of the wing part 40 with a sheet metal. Moreover, when the surface of the wing part 40 is reinforced with sheet metal, it is also possible to make the sheet metal have conductivity.

  As shown in FIG. 5, the slider accommodating chamber 21 accommodates a slider 31 that is a sliding member, a winding spring 33 that is an urging member, a damper 34 that is a fluid damper, and a sliding member 35. As shown in FIGS. 5 to 7, the slider 31 is configured to be movable in the vertical direction, which is a direction in which the slider 31 approaches and separates from the wing portion 40. Specifically, the outer peripheral shape of the slider 31 is formed in a cylindrical shape that is substantially the same shape as the inner peripheral shape of the slider accommodating chamber 21 in plan view, so that the slider 31 is in contact with the inner wall surface of the slider accommodating chamber 21. The inside can be slid up and down.

  On the upper surface of the slider 31, a cam receiving portion is formed at a portion facing the slider cam 41 of the wing portion 40. In the present embodiment, a cam receiving member 31a, which is a cylindrical metal member, is disposed as a cam receiving portion with the axial direction facing left and right. The cam receiver and the slider can be formed integrally. A spring receiving hole 31 b into which the upper end portion of the winding spring 33 can be inserted is formed on the lower surface of the slider 31. In addition, a hole 31c is formed in the upper bottom portion of the slider 31 so as to communicate the lower surface that is the surface facing the bottom surface of the slider accommodating chamber 21 and the upper surface that is the surface facing the slider cam 41 of the wing portion 40. . In the present embodiment, the hole 31 c is opened in the axial center portion of the slider 31.

  A slider groove (not shown) is formed on the inner peripheral surface of the slider accommodating chamber 21 along the vertical direction that is the moving direction of the slider 31, and a projection (not shown) is formed on the outer peripheral surface of the slider 31. . The slider 31 is accommodated in the slider accommodating chamber 21 with a protrusion inserted in the slider groove. Thereby, the movement (rotation around the axis) of the slider 31 in the circumferential direction inside the slider accommodating chamber 21 is restricted.

  The winding spring 33 biases the slider 31 upward, which is a direction approaching the wing portion 40. Specifically, the upper end of the winding spring 33 is inserted into the spring receiving hole 31 b of the slider 31 and the lower end is in contact with the bottom surface of the slider accommodating chamber 21. In other words, the winding spring 33 is interposed between the slider 31 and the bottom surface of the slider accommodating chamber 21. That is, the slider 31 is urged upward by the elastic force when the winding spring 33 is compressed. As a result, as shown in FIG. 5, the winding spring 33 causes the cam receiving member 31 a of the slider 31 to abut against the slider cam 41 and rotates the wing portion 40 in the opening direction with respect to the case 20 (with respect to the wing portion 40). Thus, a torque for rotating about the rotation pin 50 is applied). In other words, when the cam receiving member 31 a contacts the slider cam 41, the opening torque is applied from the slider 31 to the wing portion 40 in the direction to open the original pressing plate 3 against the weight torque received from the original pressing plate 3. It is done.

  The damper 34 is a fluid damper in which silicon oil, which is a kind of incompressible fluid, is filled. The damper 34 is housed in the slider housing chamber 21 and disposed at a position surrounded by the winding spring 33. A piston rod 34 a extends from the upper end of the damper 34. As shown in FIG. 5, the damper 34 has a lower end that is one end thereof abutting against the bottom surface of the slider housing chamber 21, and an upper end that is the other end is disposed at a position corresponding to the hole 31 c. That is, the damper 34 is disposed so that the piston rod 34a is positioned directly below the hole 31c.

  The damper 34 generates a reaction force when an external force that contracts downward, which is a direction in which the distance from one end to the other end (the distance from the upper end of the piston rod 34a to the bottom) is reduced, is applied. It is configured. Specifically, the piston rod 34a is connected to a piston (not shown) inside the damper 34, and a communication hole is formed in the piston. When the piston rod 34a is pushed down, a reaction force (a force that pushes the piston rod 34a upward) is generated by the viscous resistance of the silicone oil that passes through the communication hole, and the speed at which the piston rod 34a moves downward by the reaction force is increased. (The buffering effect by the damper 34 occurs).

  The sliding member 35 is a resin member that is accommodated in the slider 31 so as to be slidable in the same vertical direction as the moving direction of the slider 31. The sliding member 35 includes a protruding portion 35 a that protrudes in the direction of the wing portion 40 (upward). Further, the lower surface of the sliding member 35 opposite to the protruding portion 35 a is connected to the piston rod 34 a of the damper 34. As shown in FIG. 5, the protruding portion 35 a extends to the outside of the slider 31 through the hole 31 c of the slider 31. Furthermore, the tip end portion of the protrusion 35 a abuts against the slider cam 41 in a rotation region where the wing portion 40 is close to the case 20 (see FIGS. 5 and 7). In this embodiment, since the hole 31c is formed on the side closer to the rotation pin 50 than the cam receiving member 31a, the protruding portion 35a of the sliding member 35 is closer to the rotation pin 50 than the cam receiving member 31a. It abuts on the slider cam 41 on the side.

  Next, the behavior of the hinge 10 when the original cover 3 is rotated in the closing direction with respect to the main body 2 will be described with reference to FIGS.

As shown in FIG. 6, when the rotation angle is about 60 degrees, the rear surface of the slider cam 41 in the wing portion 40 comes into contact with the upper end surface of the rear plate of the case 20 and the restriction pin 24. Thus, it cannot be rotated further in the opening direction (counterclockwise in the left side view).
Therefore, in the present embodiment, when the hinge 10 is in the state shown in FIG. Ca n’t rotate).

  As shown in FIGS. 5 to 7, in this embodiment, the cam receiving member 31 a of the slider 31 abuts on the slider cam 41 regardless of the rotation angle (when 0 ° ≦ θ ≦ 60 °).

In this embodiment, (A) When 10 degrees <θ ≦ 60 degrees, “the rotational force (the wing section 40 is used as the case to close the hinge 10 due to the weight of the original cover 3 fixed to the wing section 40). 20 ”and“ rotational force to open the hinge 10 due to the urging force of the winding spring 33 (the wing portion 40 is attached to the case 20). On the other hand, the rotational force to rotate counterclockwise in the right side view) is generally balanced.
In the present embodiment, when (B) 0 degree ≦ θ ≦ 10 degrees, “the rotational force for closing the hinge 10 due to the weight of the original cover 3 fixed to the wing portion 40” is “winding”. It becomes larger than the “rotational force to open the hinge 10 due to the biasing force of the spring 33”.
In other words, the shape of the cam receiving member 31a (the curved surface thereof) of the slider 31 and the shape of the slider cam 41 of the wing portion 40 are determined so as to satisfy the requirements (A) and (B).
Accordingly, when the operator releases his / her hand from the original cover 3 when 10 degrees <θ ≦ 60 degrees, the rotation angle θ of the original cover 3 with respect to the main body 2 is maintained, and when θ ≦ 10 degrees. When the operator removes his / her hand from the document crimping plate 3, the document crimping plate 3 rotates in the closing direction with respect to the main body 2 by its own weight. As shown in FIG. 6, when the rotation angle θ = 60 degrees, the piston rod 34 a is extended to the maximum length, so that the sliding member 35 does not contact the slider cam 41 of the wing portion 40.

  When the original pressure plate 3 is further rotated in the closing direction with respect to the main body 2 from the state shown in FIG. 6 (when the wing portion 40 is rotated in the closing direction with respect to the case 20), the slider 31 has the winding spring 33. It moves downward (pressed down) against the biasing force.

  As shown in FIG. 7, the original pressing plate 3 rotates in the closing direction with respect to the main body 2 (the wing portion 40 rotates in the closing direction with respect to the case 20) so that the rotation angle θ is around 10 degrees. When this happens, the slider cam 41 abuts against the protruding portion 35 a of the sliding member 35.

When the original cover 3 further rotates in the closing direction with respect to the main body 2 from the state shown in FIG. 7 (when the wing portion 40 rotates in the closing direction with respect to the case 20), the slider 31 has the winding spring 33. It moves downward (pressed down) against the biasing force. At this time, the amount of movement of the slider 31 until the rotation angle reaches 0 degrees (the state in which the cam receiving member 31a is indicated by a two-dot chain line in FIG. 7) is the width D1 shown in FIG.
Further, when the original cover 3 is further rotated in the closing direction with respect to the main body 2 from the state shown in FIG. 7, the sliding member 35 moves downward, so that the piston rod 34a of the damper 34 is pushed downward (damper). 34) push the other end of 34 toward one end of damper 34). As a result, the damper 34 contracts, and the speed at which the original cover 3 is rotated in the closing direction with respect to the main body 2 is reduced (a buffering effect is generated by the damper 34). At this time, the amount of movement of the sliding member 35 (the compression length of the damper 34) until the rotation angle becomes 0 degree (the state in which the sliding member 35 is indicated by a two-dot chain line in FIG. 7) is shown in FIG. The width D2 shown in FIG.

As shown in FIG. 5, when the original cover 3 is rotated in the closing direction with respect to the main body 2 (the wing portion 40 is rotated in the closing direction with respect to the case 20), the rotation angle θ becomes 0 degree. When this occurs, the lower surface of the original cover 3 contacts the upper surface of the main body 2.
Therefore, the original cover 3 cannot be rotated further in the closing direction with respect to the main body 2.

  According to the hinge 10 according to the present embodiment, the damper 34 contracts when the rotation angle θ is about 10 degrees or less and the original cover 3 is rotated in the closing direction with respect to the main body 2 by being configured as described above. The amount D2 can be made larger than the moving amount D1 of the slider 31. Specifically, since the protruding portion 35a of the sliding member 35 contacts the slider cam 41 on the side closer to the rotating pin 50 than the cam receiving member 31a, the rotating range in which the amount of depression of the cam receiving member 31a by the slider cam 41 is small. Even at (θ ≦ 10 degrees), the slider cam 41 can sufficiently push down the sliding member 35. Thereby, the buffering effect by the damper 34 can be effectively used (rather than the configuration in which the damper contracts by the slider itself contacting the damper).

  Moreover, according to the hinge 10 which concerns on this embodiment, it is set as the structure which connects the sliding member 35 to the piston rod 34a of the damper 34 directly. For this reason, when compared with the structure which arrange | positions an arm member on a slide member so that rotation is possible, the rotation axis | shaft etc. for making an arm member rotatable are unnecessary. That is, since the whole structure of the hinge 10 can be simplified, cost can be suppressed. Further, since the space necessary for disposing the sliding member 35 is smaller than the space for rotatably disposing the arm member, the degree of freedom of the shape of the hinge 10 is increased, and the hinge 10 can be made compact.

  Specifically, in order to rotatably arrange the arm member, it is necessary to secure a space by making the cross-sectional shape of the case and the slider (cross-sectional shape in a plane orthogonal to the moving direction of the slider) rectangular. On the other hand, according to the hinge 10 according to the present embodiment, the rotating shaft of the arm member or the like is not necessary, so that the hinge 10 can have a cylindrical shape like the case 20.

  Note that, from the viewpoint of reducing the bending moment applied to the damper 34 and the piston rod 34 a, it is preferable that the hole portion 31 c opens at the axial center portion of the slider 31 like the hinge 10 according to the present embodiment. Thereby, since an axial force is applied to the damper 34 via the sliding member 35 and the piston rod 34a, the bending moment applied to the damper 34 and the piston rod 34a can be reduced.

10 Hinge 20 Case (main part)
31 Slider (sliding member)
31a Cam receiving member (cam receiving portion)
34 Damper 35 Sliding member 40 Wing part 41 Slider cam (cam part)
50 Rotating pin

Claims (3)

A hinge for pivotally connecting the second connection object to the first connection object,
A main body provided with a storage chamber and fixed to the first connection object;
A wing portion that is pivotally connected to one end portion of the main body portion, a cam portion is formed on the main body portion side, and is fixed to the second connection object;
A slide member that is accommodated in the accommodating chamber and is movable in a direction approaching and separating from the wing portion, and a cam receiving portion is formed in a portion facing the cam portion on a surface facing the wing portion. When,
Accommodated in the accommodating chamber, biasing the slide member in a direction approaching the wing portion;
A winding spring that rotates the wing portion in a direction to open the main body portion by bringing the cam receiving portion into contact with the cam portion;
A damper that is housed in the housing chamber, includes a piston rod, and generates a reaction force when an external force that pushes down the piston rod is applied;
In a state where the rotation angle of the wing portion with respect to the main body portion is smaller than a predetermined angle, an external force that pushes down the piston rod acts by causing the cam portion to contact, and a reaction force of the damper is generated,
When the rotation angle of the wing portion with respect to the main body portion is smaller than a predetermined angle, the cam portion abuts on the side closer to the rotation axis between the main body portion and the wing portion than the cam receiving portion. By pushing down the piston rod, the amount of contraction of the piston rod is made larger than the amount of movement of the slide member in the direction away from the wing part,
The said cam part is a hinge which has a part contact | abutted with the said cam receiving part and a part contact | abutted with the said piston rod in the direction orthogonal to the axial center of the said rotating shaft . The cam receiving portion is formed along the axial direction of the rotation shaft, and is formed at least in the central portion in the axial direction of the rotation shaft of the slide member.
The hinge according to claim 1.   The part which the said cam part contact | abuts when the external force which pushes down the said piston rod in the said damper acts is comprised by the surface inclined with respect to the moving direction of the said piston rod. Hinge.

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