JPWO2006129555A1 - Hinge device - Google Patents

Abstract

A coil spring 33 and a movable member 32 are sequentially inserted into the second connecting cylinder portion 31 of the hinge body 11, and pass through the bottom 31 a of the second connecting cylinder portion 31, the coil spring 33, and the movable member 32, and the second connecting cylinder portion 31. In the hinge device 10 in which the through hole 35a of the fixing member 35 is inserted into the tip end portion of the hinge shaft 34 protruding from the intermediate member 13 and the intermediate member 13 is attached to the tip end portion of the hinge shaft 34 passing through the through hole 35a. It press-fits to the through-hole 35a so that a movement is possible. The frictional resistance generated between the outer peripheral surface of the hinge shaft 34 and the inner peripheral surface of the through hole 35 a is made larger than the urging force of the coil spring 33.

Description

  The present invention relates to a hinge device that can be easily assembled.

  In general, the hinge device has a first hinge member and a second hinge member as described in Patent Document 1 below. The first hinge member is formed with a connecting cylinder portion having an opening at the second hinge member side and a bottom at the other end. A movable member is fitted in the opening of the connecting cylinder so as not to be rotatable and movable. A coil spring is disposed between the movable member and the bottom of the connecting cylinder. One end of the hinge shaft is inserted through the bottom of the connecting cylinder. The distal end portion of the hinge shaft penetrates the coil spring and the movable member and protrudes from the opening of the connecting tube portion, and a fixing member and a second hinge member are sequentially extrapolated there. The fixing member and the second hinge member are coupled so as not to rotate relative to each other, and are coupled to the first hinge member so as to be rotatable via a hinge shaft.

  When assembling the hinge device having the above-described configuration, the coil spring and the movable member are sequentially inserted into the connecting tube portion, while the hinge shaft is inserted into the bottom portion of the connecting tube portion from the outside. And a fixing member and a 2nd hinge member are sequentially extrapolated to the edge part which protruded from the connection cylinder part of the hinge axis | shaft. When extrapolating the second hinge member to the hinge shaft, the second hinge member and the fixing member are usually placed in front of the connecting tube portion and the hinge shaft (forward in the direction from the bottom side of the connecting tube portion toward the opening). After being positioned, it is moved closer to the axial direction of the hinge shaft. Thereby, the 2nd hinge member and the fixing member are extrapolated to the hinge axis.

JP 2002-181031 A

  However, depending on the hinge device, the second hinge member may not be able to be moved in the axial direction of the hinge shaft. For example, two connecting cylinders are arranged symmetrically with their axes aligned, and two hinge members are used corresponding to the two connecting cylinders, and the two hinge members are connected to each other. In such a case, if each hinge member is made to oppose the opening side edge part of a connection cylinder part, each 2nd hinge member cannot be moved to the axial direction of a hinge axis | shaft. In such a case, each second hinge member is moved in a direction orthogonal to the axis of the hinge shaft so as to face the opening side end of each connecting cylinder portion, and then the hinge shaft is moved to the second hinge member side. By doing so, the second hinge member is extrapolated to the hinge shaft.

  Here, when the second hinge member is moved in the direction orthogonal to the axis of the hinge shaft until it faces the opening side end of the connecting cylinder, the fixing member is moved from the opening side to the bottom side of the connecting cylinder part. It is necessary to push the movable member against the biasing force of the coil spring and push it into the connecting cylinder part. Otherwise, the second hinge member collides with the fixed member or the movable member, and the second hinge member cannot be moved in the direction orthogonal to the axis of the hinge shaft until it faces the opening side end of the connecting tube portion. Because. However, in order to push the fixed member so as to push the movable member into the connecting tube portion while moving the second hinge member so as to face the opening side end of the connecting tube portion, the fixing member can be pressed with a finger of one hand. The second hinge member must be moved with the other hand while pushing down, which is a rather difficult task. In particular, when the hinge device is small (for example, a diameter of about several millimeters) that is used in a mobile phone, the operation is very difficult.

In order to solve the above-described problem, the present invention provides a first hinge member having a connecting tube portion having one end opened and a bottom formed at the other end, and an end of the connecting tube portion on the opening side. Is inserted into the connecting cylinder part between the movable member and the bottom part of the connecting cylinder part, the movable member fitted to the connecting cylinder part so as to be unrotatable and movable in the axial direction of the connecting cylinder part. An urging means for urging the member from the bottom side toward the opening side; one end portion movably penetrates the central portion of the bottom portion of the first hinge member; and the other end portion of the connecting tube portion A hinge member projecting outward from the opening and a through hole are formed, and a fixing member into which an end projecting from the connecting tube portion of the hinge shaft is inserted in the through hole so as to be movable in the axial direction of the through hole And provided at the other end of the hinge shaft passing through the fixing member. A second hinge member that is non-movably connected and is rotatably connected to the first hinge member via the hinge shaft, and one of the opposing surfaces of the movable member and the fixed member A protruding portion that is pressed against the other facing surface by the urging force of the urging means is formed on the facing surface of the second urging member, and the second hinge member and the fixing member rotate to a predetermined position on the other facing surface. In the hinge device in which the protruding portion is formed so that the protruding portion enters, an operating portion is provided at one end portion of the hinge shaft that protrudes outward from the bottom portion, and the hinge shaft is attached to the through hole of the fixing member. It is characterized by being movably press-fitted so as to generate a frictional resistance greater than the biasing force of the biasing means.
In this case, the first hinge member is symmetrically provided with a pair of connecting cylinders whose axes are aligned with each other, and the movable member, the urging means, the hinge shaft, the fixed member, and the second hinge. Two members may be used corresponding to the pair of connecting cylinder parts, and the two second hinge members may be connected so as not to move in the axial direction of the connecting cylinder part.

  According to the present invention having the above-described characteristic configuration, the operation unit of the hinge shaft protruding from the bottom of the connecting cylinder part is connected in a state where the fixing member is press-fitted into the other end protruding from the opening of the connecting cylinder part of the hinge shaft. When pulled in the direction from the opening side to the bottom side of the cylinder, the fixing member moves in the same direction, and the movable member is pushed into the connecting cylinder part against the urging force of the urging means by the fixing member. Then, the second hinge member is opposed to the opening side end portion of the connecting cylinder portion via the fixing member by moving the second hinge member in a direction orthogonal to the hinge axis while maintaining the pulled state of the operation portion. Can be made. Then, the 2nd hinge member can be extrapolated to a hinge axis | shaft by moving a hinge axis | shaft from the bottom part side of a connection cylinder part to the opening part side. Here, since the operation part of the hinge shaft is on the bottom side of the connecting cylinder part, it is not so difficult to pull the operation part of the hinge shaft while moving the second hinge member. Therefore, the hinge device can be easily assembled.

It is a perspective view which shows the example of a mobile telephone using the hinge apparatus which concerns on this invention in the state which rotated the receiving part to the folding position. FIG. 2 is a perspective view showing the mobile phone in a state where a receiving unit is rotated to a vertical position. FIG. 3 is a perspective view showing the mobile phone in a state where a receiving unit is rotated to a call position. FIG. 3 is a perspective view showing the mobile phone in a state where the receiving unit is rotated to a vertical position and to a first limit position. FIG. 3 is a perspective view showing the mobile phone in a state where the camera unit is rotated by approximately 45 ° from the neutral position. It is a see-through | perspective side view of the mobile phone. It is the perspective view seen from the X direction of FIG. It is a see-through perspective view of the mobile phone. It is a side view which shows one Embodiment of the hinge apparatus based on this invention. FIG. 10 is a view on arrow X in FIG. 9. It is an expanded sectional view which follows the YY line of FIG. It is an expanded sectional view which follows the ZZ line of FIG. It is an expanded sectional view which follows the XX line of FIG. It is a disassembled perspective view of the same embodiment. It is a partial exploded perspective view of the same embodiment. It is a disassembled perspective view of another part of the embodiment. It is a disassembled perspective view of another part of the embodiment. It is an expanded sectional view which shows a state when a spherical body and a recessed part convert the urging | biasing force of a coil spring into a rotation urging | biasing force. It is an expanded sectional view which shows a state when a spherical body and a recessed part engage | insert with a click feeling.

Explanation of symbols

11 Hinge body (first hinge member)
13 Intermediate member (second hinge member)
31 2nd connection cylinder part (connection cylinder part)
31a Bottom 32 Movable member 33 Coil spring (biasing means)
34 Hinge shaft 34a Head (operation unit)
35 Fixing member 35a Through hole 36 Sphere (projection)
37 Recess 38 Recess

The best mode for carrying out the present invention will be described below with reference to the drawings.
1 to 5 show a mobile phone 1 in which a hinge device 10 (see FIG. 6 and subsequent drawings) according to the present invention is used. This cellular phone 1 has a front panel 2a with operation buttons 2b such as a numeric keypad, a microphone (not shown), a microphone 2 (not shown), and other parts, a middle part 3, a front face 4a with a liquid crystal display 4b, and a speaker (not shown). ), And a receiving unit 4 and a camera unit 5 provided with others. The transmitter 2, the intermediate unit 3, the receiver 4, and the camera unit 5 are connected via a hinge device 10 as shown in FIGS.

  That is, the intermediate portion 3 has a first rotation axis L1 extending in the width direction along the front surface 2a at one end portion in the longitudinal direction of the transmitter portion 2 (right end portion in FIG. 7; hereinafter referred to as right end portion). And a second rotation that is parallel to the first rotation axis L1 and that is separated from the first rotation axis L1 in the direction from the back side of the transmitter 2 toward the front surface 2a (hereinafter referred to as the upper side). It is connected so as to be rotatable about the axis L2. The intermediate portion 3 has the folding position shown in FIGS. 1 and 6 in which the front surface 3a of the intermediate portion 3 is substantially parallel to the front surface 2a of the transmitting portion 2 with respect to the first rotation axis L1, and this folding position. From FIG. 6, it can be rotated between the vertical position shown in FIG. Further, with respect to the second rotation axis L2, the intermediate portion 3 is rotatable between a folding position and a position approximately 70 ° away from the folding position in the clockwise direction in FIG. However, as will be described later, when the intermediate portion 3 is rotated in the clockwise direction in FIG. 6 from the folding position by a normal rotation operation, first, the intermediate portion 3 is first positioned from the folding position to the vertical position around the first rotation axis L1. Rotate until Thereafter, the robot rotates about the second rotation axis L2 to a position shown in FIG. 3 (hereinafter referred to as a call position) that is approximately 70 ° away from the vertical position. Therefore, the intermediate unit 3 can rotate with respect to the transmitting unit 2 between a folding position and a call position that is approximately 160 degrees away from the folding position. Moreover, the intermediate unit 3 is stopped at each position with a click feeling by the hinge device 10 at the folding position, the vertical position, and the call position. When the intermediate unit 3 rotates from the talking position to the folding position, the intermediate unit 3 first rotates about 70 ° about the second rotation axis L2 to reach the vertical position, and then reaches the first rotation axis L1. Rotate to the folding position around the center.

The receiver 4 is connected to the intermediate portion 3 so as to be rotatable about the third rotation axis L3. The third rotation axis L3 is disposed so as to be substantially parallel to the front surface 2a of the transmitter 2 and perpendicular to the second rotation axis when the intermediate portion 3 is positioned at the folding position. The receiving unit 4 has a forward-facing position (see FIGS. 1 and 6) in which the front surface 4a of the receiving unit 4 is parallel to the front surface 2a of the transmitting unit 2 when the intermediate unit 3 is positioned at the folding position. It is possible to turn between the first limit position shown in FIG. 4 which is approximately 120 ° clockwise from the forward position in FIG. The reception unit 4 is stopped at each position with a click feeling by the hinge device 10 at the forward position and the lateral position 90 degrees away from the forward position toward the first limit position. When the intermediate unit 3 is rotated to the folding position with the receiver unit 4 positioned in the forward position, the front surface 4a of the receiver unit 4 is formed at the left end of the front surface 2a of the transmitter unit 2 and has a low height. It hits the ridge 2c. In other words, the folding position of the intermediate portion 3 is regulated by the front surface 4a of the receiver 4 abutting against the ridge 2c.
Note that the receiving unit 4 rotates integrally with the intermediate unit 3 with respect to the first and second rotation axes L1 and L2. Therefore, the same name is also given to each position of the reception unit 4 when the intermediate unit 3 is located at the folding position, the vertical position, or the call position.

  The camera unit 5 is connected to the transmission unit 2 and the intermediate unit 3 so as to be rotatable about the fourth rotation axis L4. The fourth rotation axis L4 has a right angle with the first and second rotation axes L1 and L2 and is parallel to the third rotation axis L3. The first and second rotation axes L1 and L2 It is arranged in the middle. Moreover, the fourth rotation axis L4 is arranged at the same position as the third rotation axis L3 in the longitudinal direction of the first and second rotation axes L1, L2. The camera unit 5 can be rotated from the neutral position shown in FIG. 1 with the longitudinal direction thereof in the width direction of the transmitter unit 2 to a second limit position that is 180 ° clockwise and is counterclockwise. It can be rotated to a third limit position that is approximately 135 ° away from the neutral position. The camera unit 5 is stopped with a click feeling by the hinge device 10 every time the camera unit 5 is rotated by 90 °, regardless of whether the camera unit 5 is rotated clockwise or counterclockwise.

Next, the hinge device 10 according to the present invention used in the mobile phone 1 will be described.
As shown in FIGS. 6 to 10 and 14, the hinge device 10 includes a hinge main body 11 and a pair of first hinges connected to the hinge main body 11 via first rotation mechanisms 20 and 20 ′, respectively. 1 arm 12, 12 ′, an intermediate member (second hinge member) 13 rotatably connected to the hinge body 11 via the second rotation mechanism 30, 30 ′, and the intermediate member 13 to the third time The frame body 14 is rotatably connected via a moving mechanism 40, and the mounting plate 15 is rotatably connected to the hinge body 11 via a fourth rotating mechanism 50.

  As shown in FIGS. 6 to 8, the transmitting portion 2 is attached to the pair of first arms 12 and 12 ′, the intermediate portion 3 is attached to the intermediate member 13, and the receiving portion 4 is attached to the frame body 14. The camera unit 5 is attached to the attachment plate 15. In addition, the axes of the first rotation mechanism 20, 20 ', the second rotation mechanism 30, 30', the third rotation mechanism 40, and the fourth rotation mechanism 50 are the first rotation axis L1, the second rotation. The movement axis L2, the third rotation axis L3, and the fourth rotation axis L4 are made to coincide with each other. Accordingly, if the first arms 12 and 12 'are fixed in a non-rotatable position, the hinge body 11 rotates about the first rotation axis L1 with respect to the first arms 12 and 12'. The intermediate portion 3 and the receiving portion 4 rotate with respect to the transmitting portion 2 around the first rotation axis L1, and the intermediate member 13 rotates with respect to the hinge body 11 around the second rotation axis L2. Accordingly, the intermediate portion 3 and the receiving portion 4 rotate with respect to the transmitting portion 2 around the second rotation axis L2, and the frame body 14 rotates with respect to the intermediate member 13 around the third rotation axis L3. Accordingly, the receiver 4 rotates about the third rotation axis L3 with respect to the intermediate portion 3, and the mounting plate 15 rotates about the fourth rotation axis L4 with respect to the hinge body 11, thereby Part 5 rotates fourth with respect to transmitter 2, intermediate part 3 and receiver 4 Pivots about a line L4. Accordingly, the rotation positions of the hinge main body 11, the intermediate member 13, the frame body 14, and the mounting plate 15 are given the same names as the rotation positions of the intermediate section 3, the receiver section 4, and the camera section 5. Further, the axes of the first rotation mechanism 20, 20 ′, the second rotation mechanism 30, 30 ′, the third rotation mechanism 40, and the fourth rotation mechanism 50 are respectively set to the first rotation axis L1 and the second rotation axis L1. The rotation axis L2, the third rotation axis L3, and the fourth rotation axis L4 shall be referred to.

  The hinge body 11 has a horizontal “H” shape when viewed from the longitudinal direction of the transmitting section 2 and the receiving section 4 located at the folding position (see FIGS. 14 and 15), and has a first rotation. A first support portion 11a extending in parallel with the axis L1, a second support portion 11b extending in parallel with the second rotation axis L2, and a connecting portion 11c for connecting the first support portion 11a and the second support portion 11b. Have. Each of the first support portion 11a and the second support portion 11b has a substantially semicircular cross section. In addition, the first and second support portions 11a and 11b have their open portions directed toward the transmission portion 2 and the respective center lines of curvature coincide with the first and second rotation axes L1 and L2. Has been placed.

  One first arm 12 is rotatably connected to one end of the first support portion 11a via the first rotation mechanism 20, and the other first end is connected to the other first end of the first support portion 11a. The arm 12 'is rotatably connected via the first rotation mechanism 20'. The first rotation mechanisms 20 and 20 'are configured symmetrically with each other. Therefore, only one first rotation mechanism 20 will be described, and the other first rotation mechanism 20 ′ will be denoted by the same reference numerals as those of the first rotation mechanism 20 and description thereof will be omitted.

  As shown in FIGS. 11, 14, and 15, the first rotation mechanism 20 includes a first connecting cylinder portion 21 that is integrally provided at one end of the first support portion 11 a. The first connecting cylinder portion 21 has the same inner and outer diameter as the first support portion 11a, and is arranged such that its axis coincides with the first rotation axis L1. The outer end portion of the first connecting cylinder portion 21 (the end portion in the direction from the other end side to the one end side of the first support portion 11a) is open, and the inner end portion is closed by the bottom portion 21a. The bottom portion 21a is formed with a support hole 21b penetrating therethrough. The support hole 21b is arranged such that its axis coincides with the first rotation axis L1.

  The movable member 22 is fitted to the opening side end of the first connecting cylinder portion 21 so as not to rotate and to move in the direction of the first rotation axis L1. A biasing means including a coil spring 23 is inserted into the first connecting cylinder portion 21 between the movable member 22 and the bottom portion 21a. By this coil spring 23, the movable member 22 is urged in the direction from the bottom 21a side to the opening side.

  A base end portion of the hinge shaft 24 is rotatably and movably inserted through the support hole 21b of the bottom portion 21a. The hinge shaft 24 is prevented from moving from the bottom 21a side to the opening side when a head 24a formed at the base end of the hinge shaft 24 abuts against the bottom 21a. The distal end portion of the hinge shaft 24 penetrates the coil spring 23 and the movable member 22 so as to be rotatable and movable, and protrudes from the first connecting cylinder portion 21 to the outside. The proximal end portion of the first arm 12 is attached to the distal end portion of the hinge shaft 24 that protrudes from the first connecting cylinder portion 21 in a retaining state. The movable member 22 is abutted against the proximal end portion of the first arm 12 by the biasing force of the coil spring 23. As a result, the head 24a of the hinge shaft 24 is abutted against the bottom 21a. Thereby, the movable member 22, the coil spring 23, the hinge shaft 24, and the first arm 12 are incorporated in the first connecting cylinder portion 21 so as not to be separated.

  As shown in FIG. 15, a projecting portion 21 c extending in the circumferential direction is formed on the end surface on the opening side of the first connecting cylinder portion 21, and two outer peripheral surfaces on the base end portion of the first arm 12 are provided. The protrusions 12a and 12b are arranged away from each other in the circumferential direction. A protrusion 21c is inserted between the two protrusions 12a and 12b. Therefore, when the first arm 12 rotates in one direction and the protrusion 12a hits one end surface in the circumferential direction of the protruding portion 21c, the first arm 12 cannot further rotate in one direction. Hereinafter, the position of the first arm 12 at this time is referred to as a first rotation position. When the first arm 12 rotates in the other direction and the projection 12b hits the other end surface in the circumferential direction of the protruding portion 21c, the first arm 12 can no longer rotate in the other direction. Hereinafter, the position of the first arm 12 at this time is referred to as a second rotation position.

  A pair of spheres 25, 25 are embedded in a surface of the movable member 22 facing the first arm 12 with a part of the spheres 25 projecting toward the first arm 12 (see FIG. 18). Accordingly, in the movable member 22, only a pair of spheres 25, 25 actually hit the first arm 12. The pair of spheres 25, 25 are arranged 180 degrees apart in the circumferential direction on one circumference centered on the first rotation axis L1.

  On the other hand, a pair of recesses 26 and 26 and another pair of recesses 27 and 27 are formed on the surface of the first arm 12 facing the movable member 22. Two pairs of recesses 26, 26; 27, 27 may be formed on the movable member 22, and the spheres 25, 25 may be provided on the first arm 12. Further, a protruding portion may be formed instead of the sphere 25.

  The pair of recesses 26, 26 are arranged on the same circumference as the sphere 25. In addition, when the first arm 12 is located between the first rotation position and a position away from the first rotation position by a predetermined angle (for example, 10 °), the pair of recesses 26 and 26 is located. As shown in FIG. 18, the spheres 25, 25 are arranged so as to abut one end of the bottom of the recesses 26, 26 in the circumferential direction of the circumference where the recesses 26 are arranged. One end of the bottom surface of the concave portion 26 against which the spherical body 25 abuts acts as a kind of cam surface, and converts the urging force of the coil spring 23 into a rotating urging force. With this turning biasing force, the first arm 12 is turned and biased in the direction from the second turning position to the first turning position (the direction going from the vertical position to the folding position), and the first turning with a click feeling. Maintained in position.

  The other pair of recesses 27, 27 are arranged on the same circumference as the recess 26. In addition, the pair of recesses 27 and 27 are located between the first arm 12 and the position away from the second pivot position by a predetermined angle (for example, 10 °) from the first pivot position to the first pivot position. In some cases, as indicated by an imaginary line in FIG. 18, the spheres 25, 25 are end portions in the circumferential direction in which the recesses 27 are arranged on the bottom surfaces of the recesses 27, 27 (the end where the sphere 25 hits the recess 26 and Are arranged so as to abut against the end portion on the opposite side in the circumferential direction. One end of the bottom surface of the recess 27 against which the sphere 25 abuts acts as a kind of cam surface, and converts the urging force of the coil spring 23 into a rotating urging force. With this turning biasing force, the first arm 12 is turned and biased in the direction from the first turning position to the second turning position (the direction going from the folding position to the vertical position), and the second turning with a click feeling. Maintained in position.

  As shown in FIGS. 14 and 16, the intermediate member 13 has a substantially “U” shape, and opposite ends of the intermediate member 13 are opposite to the opposite ends of the second support portion 11 b. ′ Are connected to each other in a rotatable manner. The second rotation mechanisms 30 and 30 'are configured symmetrically with each other. Therefore, only one second rotation mechanism 30 will be described, and the other second rotation mechanism 30 'will be denoted by the same reference numerals as those of the second rotation mechanism 30 and description thereof will be omitted.

  As shown in FIGS. 12, 14, and 15, the second rotation mechanism 30 includes a second connecting cylinder portion (connecting cylinder portion) 31 that is integrally provided at one end of the second support portion 11 b. Yes. The second connecting cylinder portion 31 has the same inner and outer diameter as the second support portion 11b, and is arranged with its axis line coincident with the second rotation axis L2. The outer end portion of the second connecting cylinder portion 31 (the end portion in the direction from the other end side to the one end side of the first support portion 11b) is open, and the inner end portion is closed by the bottom portion 31a. A support hole 31b is formed through the bottom 31a. The support hole 31b is arranged such that its axis coincides with the second rotation axis L2.

  The movable member 32 is fitted to the opening side end of the second connecting cylinder portion 31 so as not to rotate and to be movable in the direction of the second rotation axis L2. A coil spring (biasing means) 33 is inserted into the second connecting cylinder portion 31 between the movable member 32 and the bottom portion 31a. The movable member 32 is urged by the coil spring 33 in the direction from the bottom 31a toward the opening.

  A base end portion of the hinge shaft 34 is rotatably and movably inserted into the support hole 31b of the bottom portion 31a. The hinge shaft 34 is prevented from moving from the bottom 31a side to the opening side by the head (operation part) 34a formed at the base end of the hinge shaft 34 striking the bottom 31a. The distal end portion of the hinge shaft 34 penetrates the coil spring 33 and the movable member 32 so as to be rotatable and movably protrudes from the second connecting cylinder portion 31 to the outside. A fixing member 35 is attached to the distal end portion of the hinge shaft 34 protruding from the second connecting cylinder portion 31. That is, a through hole 35a is formed in the fixing member 35, and the hinge shaft 34 is inserted into the through hole 35a. The movable member 32 urged by the coil spring 33 is in contact with the fixed member 35. An attachment hole 13 a of the intermediate member 13 is fitted to the tip of the hinge shaft 34 that penetrates the fixing member 35. Therefore, the intermediate member 13 is rotatably connected to the second connecting cylinder portion 31 via the hinge shaft 34, and is thereby connected to the hinge body 11 so as to be rotatable about the second rotation axis L2. . Moreover, the intermediate member 13 is secured to the hinge shaft 34 from the distal end portion thereof by crimping the distal end portion of the hinge shaft 34 that penetrates the mounting hole 13a. The head 34a of the hinge shaft 34 abuts against the bottom 31a, and the intermediate member 13 is attached to the distal end portion of the hinge shaft 34 in a retaining state, so that the movable member 32, the coil spring 33, the hinge shaft 34, the fixed member 35, and The intermediate member 13 is incorporated in the second connecting cylinder portion 31 so as not to be separated.

  One end of the intermediate member 13 and the fixing member 35 are connected so as not to rotate. Therefore, the intermediate member 13 and the fixing member 35 rotate integrally around the second rotation axis L2. The rotation range of the intermediate member 13 is limited as follows. That is, the intermediate member 13 is non-rotatably connected to the hinge shaft 34, and a protrusion 34b extending in the circumferential direction is formed on the outer peripheral surface of the head portion 34a of the hinge shaft 34 as shown in FIG. ing. One end surface of the projecting portion 34b facing the circumferential direction of the second support portion 11b having a substantially semicircular cross section is formed when the intermediate member 13 rotates to a predetermined position in one direction around the second rotation axis L2. It hits one end face in the circumferential direction. As a result, the intermediate member 13 cannot be rotated further in one direction. Hereinafter, the rotation position of the intermediate member 13 at this time is referred to as a third rotation position. When the intermediate member 13 is rotated in the other direction to a predetermined position, the other end surface of the projecting portion 34b may abut against the other end surface in the circumferential direction of the second support portion 11b, and the intermediate member 13 may be further rotated in the other direction. become unable. Hereinafter, the rotation position of the intermediate member 13 at this time is referred to as a fourth rotation position. Note that a mechanism for limiting the rotation range of the intermediate member 13 may have another structure.

  A pair of spheres (protrusions) 36 and 36 are embedded in a surface of the movable member 32 facing the fixed member 35 in a state in which a part thereof protrudes toward the fixed member 35. Therefore, in the movable member 32, only a pair of spheres 36 and 36 actually hit the fixed member 35. The pair of spheres 36, 36 are disposed 180 degrees apart in the circumferential direction on one circumference centered on the second rotation axis L2.

  On the other hand, a pair of recesses 37, 37 and another pair of recesses 38, 38 are formed on the surface of the fixed member 35 facing the movable member 32, respectively. The two pairs of recesses 37, 37; 38.38 may be formed in the movable member 32, and the spheres 36, 36 may be provided in the fixed member 35. Further, a protruding portion may be formed in place of the sphere 36.

  The pair of recesses 37, 37 are arranged on the same circumference as the sphere 36. Moreover, when the intermediate member 13 is located between the third rotation position and a position away from the third rotation position by a predetermined angle (for example, 10 °), the pair of recesses 37 and 37 is The spherical bodies 36 and 36 are disposed so as to abut against one end portion in the circumferential direction of the circumference where the concave portion 37 is disposed on the bottom surface of the concave portions 37 and 37. One end portion of the bottom surface of the concave portion 37 against which the spherical body 36 abuts acts as a kind of cam surface, and converts the urging force of the coil spring 33 into a rotating urging force. The turning biasing force urges the intermediate member 13 in the direction from the fourth turning position to the third turning position (the direction from the talking position to the vertical position), and moves to the third turning position with a click feeling. Maintained.

  The other pair of recesses 38 is disposed on the same circumference as the recess 37. Moreover, when the intermediate member 13 is located between the fourth rotation position and a position away from the third rotation position by a predetermined angle (for example, 10 °), the concave portions 38 and 38 are spherical. 36 and 36 seem to abut one end in the circumferential direction of the circumference where the concave portion 38 is disposed on the bottom surface of the concave portions 38 and 38 (the end opposite to the end where the spherical body 36 strikes the concave portion 37 in the circumferential direction). Is arranged. One end of the bottom surface of the recess 38 against which the sphere 36 abuts acts as a kind of cam surface, and converts the urging force of the coil spring 33 into a rotating urging force. The turning biasing force urges the intermediate member 13 in the direction from the third turning position to the fourth turning position (the direction from the vertical position to the talking position), and moves to the fourth turning position with a click feeling. Maintained.

  Here, assuming that the first arm 12 is positioned at the first rotation position and the intermediate member 13 is positioned at the third rotation position, the receiver 4 is folded in the direction from the vertical position toward the folding position. It will be located in the front side by a predetermined minute angle (for example, 1 °) from the tatami position. Therefore, when the receiver 3 is located at the folding position, the first arm 12 is located at a position shifted by a minute angle from the first rotational position to the second rotational position, or the intermediate member 13 is It is located at a position shifted from the third rotation position to the fourth rotation position by a minute angle. In the hinge device 10, the rotation biasing force that biases the intermediate member 13 positioned at the third rotation position in the direction from the fourth rotation position toward the third rotation position is positioned at the first rotation position. The first arm 12 is set to be larger than a rotation biasing force that biases the first arm 12 in the direction from the second rotation position toward the first rotation position. Therefore, when the receiver 4 is positioned at the folding position, the intermediate member 13 is positioned at the third rotation position, and the first rotation member 12 is moved from the first rotation position to the second rotation position side. It is located at a position shifted by a small angle.

  When the earpiece 4 is rotated from the folding position toward the vertical position, the intermediate member 13 remains stopped at the third rotation position, and the first arm 12 rotates about the first rotation axis L1. Move. When the first arm 12 rotates to the second rotation position, the receiver 4 reaches the vertical position. When the reception unit 4 positioned at the vertical position is rotated to the call position side, the first arm 12 is maintained in the stopped state at the second position, and the intermediate member 13 is third around the second rotation axis L2. It rotates from the rotation position toward the fourth rotation position. And if the intermediate member 13 rotates to the 4th rotation position, the receiving part 4 will reach a call position.

  When the receiver 4 is located at the call position, the first arm 12 is located at the second rotation position, and the intermediate member 13 is located at the fourth rotation position. A turning biasing force for turning and biasing the first arm 12 located at the second turning position from the first turning position toward the second turning position is located at the fourth turning position. The intermediate member 13 is set to be larger than a rotation biasing force that biases the intermediate member 13 from the third rotation position toward the fourth rotation position. Therefore, when the receiving unit 4 located at the call position is rotated to the folding position side, the first arm 12 maintains the stopped state at the second rotation position, and the intermediate member 13 is rotated second. It rotates from the fourth rotation position toward the third rotation position about the axis L2. The intermediate member 13 stops when it reaches the third rotation position. Accordingly, thereafter, the first arm 12 rotates from the second rotation position toward the first rotation position about the first rotation axis L1. And the 1st arm 12 rotates until the receiving part 4 reaches a folding position.

  Both end portions of the intermediate member 13 are in contact with the fixing members 35, 35 with almost no gap, and the fixing members 35, 35 are in contact with the end surfaces of the second connecting cylinder portions 31, 31 with almost no gap. Moreover, the intermediate member 13 has a “U” shape. Therefore, when attaching both end portions of the intermediate member 13 to the tip portions of the hinge shafts 34, 34, the intermediate member 13 cannot be moved in the axial direction of the hinge shaft 34 (second rotation axis L2 direction). It must be moved in a direction perpendicular to the axis. Even in such a case, the following configuration is adopted so that the intermediate member 13 can be easily attached to the hinge shaft 34.

  That is, the through hole 35a of the fixing member 35 has a size smaller than the hinge shaft 34, and the hinge shaft 34 is press-fitted. In this case, the hinge shaft 34 may not be able to rotate with respect to the through hole 35a, but friction generated between the outer peripheral surface of the hinge shaft 34 and the inner peripheral surface of the through hole 35a in the axial direction thereof. It can move against resistance. However, the frictional resistance generated between the outer peripheral surface of the hinge shaft 34 and the inner peripheral surface of the through hole 35 a is greater than the urging force of the coil spring 33.

  When the intermediate member 13 is assembled to the hinge body 11, the coil spring 33 and the movable member 32 are sequentially inserted into each second connecting cylinder portion 31 and the hinge shaft 34 is inserted into the support hole 31 b of the bottom portion 31 a. Thereafter, the tip end portion of the hinge shaft 34 protruding from the opening side end portion of the connecting cylinder portion 31 is press-fitted into the through hole 35 a of the fixing member 35. In this case, the front end surface of the hinge shaft 34 is flush with the surface of the fixing member 35 on the side opposite to the second connecting cylinder portion 31 or is slightly moved closer to the second connecting cylinder portion 31 side. Next, the head 34 a of the hinge shaft 34 is gripped, and the hinge shaft 34 is moved from the opening side of the second connecting cylinder portion 31 toward the bottom 31 a side. The hinge shaft 34 is moved until the fixing member 35 comes into contact with the end face on the opening side of the second connecting cylinder portion 31. Thereby, the movable member 32 can be made into the state accommodated in the connection cylinder part 31. FIG. Moreover, since the frictional resistance generated between the hinge shaft 34 and the fixing member 35 is larger than the urging force of the coil spring 33, the fixing member 35 does not come out of the tip end portion of the hinge shaft 34. The hinge shaft 34 is held at a position where the fixing member 35 abuts against the second connecting cylinder portion 31. In this case, the hinge shaft 34 can be held at this position by interposing a spacer (not shown) between the head portion 34a and the bottom portion 31a. Next, the intermediate member 13 is moved in a direction orthogonal to the second rotation axis L <b> 2, and both end portions of the intermediate member 13 are opposed to the fixing members 35 and 35. Next, the hinge shaft 34 is moved until the head portion 34 a abuts against the bottom portion 31 a, and the tip end portion of the hinge shaft 34 is inserted into the attachment hole 13 a of the intermediate member 13. Then, the attachment of the intermediate member 13 to the hinge body 11 is completed by caulking the tip end portion of the hinge shaft 34 penetrating the attachment hole 13a. Thus, when attaching the both ends of the intermediate member 13 to the hinge shaft 34, it is not necessary to hold the fixing member 35 with a finger, and the head portion 34a of the hinge shaft 34 may be gripped and pulled. Therefore, the intermediate member 13 having a “U” shape can be easily attached to the hinge body 11.

  As shown in FIGS. 14 and 16, the frame body 14 has a “U” shape, and a central portion thereof is rotatably connected to a central portion of the intermediate member 13 via a third rotating mechanism 40. Has been. The third rotation mechanism 40 is configured as follows.

  That is, a support hole 13 b is formed at the center of the intermediate member 13. The support hole 13b is disposed such that its axis coincides with the third rotation axis L3. A hinge shaft 41 is rotatably inserted into the support hole 13b. A head portion 41 a is formed at the proximal end portion (upper end portion in FIG. 16) of the hinge shaft 41, and the head portion 41 a abuts against the intermediate member 13. A concave portion 41b is formed on the outer peripheral surface of the head portion 41a so as to extend over a substantially half circumference.

  A stopper member 42 is fixed to the intermediate member 13. One end of the stopper member 42 is inserted into the recess 41b. When the stopper member 42 abuts against one end surface of the recess 41b in the circumferential direction, the rotation of the hinge shaft 41 in one direction is limited, and when the stopper member 42 abuts against the other end surface of the recess 41b, the hinge shaft 41 moves in the other direction. The rotation is limited.

  An attachment hole 14 a is formed at the center of the frame body 14. The mounting hole 14a is disposed such that its axis coincides with the third rotation axis L3. A holding member 43 is attached to the surface of the frame body 14 facing the intermediate member 13. The holding member 43 has a holding cylinder portion 43a that is open at both ends. The holding cylinder portion 43a is arranged so that its axis coincides with the third rotation axis L3. The movable member 44 is fitted to the opening side end portion of the holding cylinder portion 43a so as not to rotate and to move in the direction of the third rotation axis L3. In the holding cylinder portion 43a between the movable member 44 and the frame body 14, an urging means including a coil spring 45 is inserted. The movable member 44 is urged toward the intermediate member 13 by the coil spring 45.

  The distal end portion of the hinge shaft 41 passes through the movable member 44, the coil spring 45, and the holding cylinder portion 43 a of the holding member 43, and further passes through the mounting hole 14 a of the frame body 14. The frame body 14 is prevented from being detached from the distal end portion of the hinge shaft 41 by crimping the distal end portion of the hinge shaft 41 protruding from the mounting hole 14a. Moreover, since the head portion 41 a abuts against the intermediate member 13, the frame body 14, the holding member 43, the coil spring 45, and the movable member 44 are assembled to the intermediate member 13 so as not to be separated.

  The hinge shaft 41 is fitted in the mounting hole 14a so as not to rotate. Accordingly, the frame body 14 rotates integrally with the hinge shaft 41. As described above, the pivot range of the hinge shaft 41 is limited by the stopper member 42. Therefore, the rotation range of the frame body 14 is also limited by the stopper member 42. When the stopper member 42 hits one end surface of the recess 41b, the frame body 14 and the receiver 4 are positioned in the forward position, and the stopper member 42 When the butt hits the other end surface of the recess 41b, the frame 14 and the receiver 4 are positioned at the first limit position.

  A pair of spheres 46, 46 are embedded in a surface of the movable member 44 facing the intermediate member 13, with a part thereof protruding toward the intermediate member 13. Therefore, the movable member 44 does not abut against the intermediate member 13, and the pair of spheres 46 abut against the intermediate member 13 by the biasing force of the coil spring 45. The pair of spheres 46, 46 are arranged 180 degrees apart in the circumferential direction on the same circumference around the third rotation axis L3.

  A pair of recesses and another pair of recesses (one of the other pair of recesses is shown in FIG. 19) 47 are formed on the surface of the intermediate member 13 facing the movable member 44. ing. The pair of recesses and the other pair of recesses 47 may be formed on the surface of the movable member 44 facing the intermediate member 13. In that case, a pair of spheres 46 are formed on the opposing surfaces of the movable member 44 of the intermediate member 13. Further, instead of the sphere 46, a protruding portion may be formed.

  One pair of recesses are arranged 180 degrees apart in the circumferential direction on the same circumference as the circumference where the sphere 46 is arranged. In addition, when the frame body 14 is positioned between the forward position and the position away from the lateral position by a predetermined angle, the sphere 46 has a circumference around the third rotation axis L3 on the bottom surface of the recess. The spherical body 46 is disposed so as to abut one end portion of the concave portion in the same manner as the relationship between the spherical body 25 and the concave portion 26 shown in FIG. The spherical body 46 and the bottom surface of the concave portion convert the urging force of the coil spring 45 into a rotating urging force. By this turning biasing force, the frame body 14 is turned and biased in the direction from the lateral position toward the forward position, and is held at the forward position with a click feeling.

  The other pair of recesses 47 is disposed on the same circumference as the one pair of recesses. In addition, when the frame body 14 is rotated to the lateral position, both ends of the spherical body 46 in the circumferential direction centering at least on the third rotation axis L3 in the outer peripheral side portion of the bottom surface of the recess 47 as shown in FIG. It is arranged to hit the part. Therefore, the frame body 14 is stopped with a click feeling at the lateral position.

  Next, the 4th rotation mechanism 50 which connects the attachment plate 15 to the hinge main body 11 so that rotation is possible centering on the 4th rotation axis L4 is demonstrated. As shown in FIGS. 14 and 17, the connecting portion 11c of the hinge body 11 is formed with a support hole 11d (see FIG. 15) penetrating therethrough. The support hole 11d is disposed such that its axis coincides with the fourth rotation axis L4. A cylindrical portion 51 is formed on the surface (upper surface in FIG. 17) facing the intermediate member 13 side of the connecting portion 11c so that the axis coincides with the fourth rotation axis L4. A movable member 52 is fitted to the opening side end portion (upper end portion in FIG. 17) of the cylindrical portion 51 so as not to rotate and to move in the direction of the fourth rotation axis L4. An urging means including a coil spring 53 is inserted into the cylindrical portion 51 between the movable member 52 and the connecting portion 11c. The movable member 52 is biased upward in FIG. 17 by the coil spring 53.

  A hinge shaft 54 is inserted through the support hole 11d. The hinge shaft 54 is inserted into the support hole 11d until the head 54a formed at the base end of the hinge shaft 54 abuts against the lower surface of the connecting portion 11c in FIG. A distal end portion of the hinge shaft 54 penetrates the coil spring 53 and the movable member 52 and protrudes upward from the cylindrical portion 51. The distal end portion of the hinge shaft 54 protruding from the cylindrical portion 51 is inserted into an attachment hole 15 a formed in the central portion of the attachment plate 15. Then, the mounting plate 15 is attached to the hinge shaft 54 in a state of being prevented from coming off from the distal end portion by crimping the tip portion of the hinge shaft 54 penetrating the mounting hole 15a. Thus, the mounting plate 15 is connected to the hinge body 11 via the hinge shaft 54 so as to be rotatable. In addition, the head 54a of the hinge shaft 54 abuts against the connecting portion 11c, and the mounting plate 15 is prevented from coming off from the tip of the hinge shaft 54, whereby the mounting plate 15, the coil spring 53, the movable member 52, and the hinge shaft 54. Is attached to the hinge body 11 inseparably.

  An engaging protrusion (not shown) is formed on the surface of the connecting portion 11c facing the mounting plate 15. An engaging protrusion (not shown) is formed on the surface of the mounting plate 15 facing the connecting portion 11c. Both engaging protrusions are arranged on the same circumference with the fourth rotation axis L4 as the center. Therefore, when the mounting plate 15 rotates in one direction around the fourth rotation axis L4, the both engaging protrusions are brought into contact with each other in the circumferential direction, and when the mounting plate 15 rotates in the other direction, the circumferential direction The other end faces of each other. In addition, when both end faces of the engaging projections are in contact with each other, the mounting plate 15 is positioned at the second limit position, and when the other end surfaces are in contact with each other, the mounting plate 15 is in the third limit position. As such, the respective positions and dimensions are determined.

  A pair of spheres 55, 55 are embedded in a surface of the movable member 52 facing the mounting plate 15, with a part protruding toward the mounting plate 15. Therefore, the movable member 52 does not abut against the mounting plate 15, and the pair of spheres 55 and 55 are abutted against the mounting plate 15 by the biasing force of the coil spring 53. The pair of spheres 55, 55 are arranged 180 degrees apart in the circumferential direction on the circumference centered on the fourth rotation axis L4.

  A pair of recesses (not shown) and another pair of recesses (not shown) are formed on the surface of the mounting plate 15 facing the movable member 52. The two pairs of recesses may be formed on the surface of the movable member 52 facing the mounting plate 15. In that case, a pair of spheres 55 and 55 are provided on the surface of the mounting plate 15 facing the movable member 52. Further, instead of the pair of spheres 55, 55, a protruding portion may be formed.

  One pair of recesses is arranged 180 degrees apart in the circumferential direction on the same circumference as the sphere 55. Moreover, the one pair of recesses is formed in the circumferential direction with the spherical body 55 at least about the fourth rotation axis L4 in the outer peripheral side portion of the bottom surface of the recess when the mounting plate 15 is positioned at the neutral position. It arrange | positions so that it may contact | abut both ends (refer the relationship between the spherical body 46 and the recessed part 47 of FIG. 19). Therefore, the mounting plate 15 is stopped with a click feeling at the neutral position. Moreover, since the spherical body 55 is fitted into the recess every time the mounting plate 15 rotates 180 °, the mounting plate 15 is stopped with a click feeling every 180 ° by the pair of spherical bodies 55 and the pair of concave portions.

  The other pair of recesses are arranged on the same circumference as the one pair of recesses, and are also 90 ° apart from the pair of recesses. Therefore, the mounting plate 15 is stopped with a click feeling by the pair of spheres 55 and the other pair of recesses every time it is turned 90 ° from the position stopped by the sphere 55 and one pair of recesses. Therefore, the mounting plate 15 is stopped with a click feeling by the pair of spheres 55, 55 and the two pairs of recesses each time the mounting plate 15 is rotated 90 ° from the neutral position.

  The hinge body 11 is provided with a fall prevention member 6 so as to surround the cylindrical portion 51. The surface of the fall prevention member 6 that faces the mounting plate 15 is substantially flush with the tip surface of the cylindrical portion 51. A sheet member 7 is fixed to a surface of the mounting plate 15 that faces the collapse preventing member 6. The sheet member 7 and the fall-preventing member 6 prevent the mounting plate 15 from tilting by abutting against each other when the mounting plate 15 is about to tilt with respect to the fourth rotation axis L4. Moreover, both members 6 and 7 are made of resin in order to reduce the sound generated when both members 6 and 7 abut.

  The hinge device according to the present invention can be used for a portable device having three or more components that are rotatable relative to each other, such as a foldable mobile phone with a camera.

Claims (2)

A first hinge member having a connecting tube portion having an opening at one end and a bottom portion at the other end; and an axis of the connecting tube portion that is non-rotatable at the opening side end of the connecting tube portion A movable member that is movably fitted in a direction, and is inserted into the connecting cylinder part between the movable member and the bottom part of the connecting cylinder part, and the movable member is moved from the bottom side toward the opening side. A biasing means for biasing, a hinge shaft that has one end portion movably penetrating the center portion of the bottom portion of the first hinge member, and the other end portion projecting outward from the opening of the connecting cylinder portion, and a through hole A fixing member inserted into the through-hole so that an end portion of the hinge shaft protruding from the connecting tube portion is movable in the axial direction of the through-hole, and the hinge shaft penetrating the fixing member. The hinge is provided at an end and is non-rotatably connected to the fixing member, and the hinge And a second hinge member rotatably connected to the first hinge member, and on one of the opposing surfaces of the movable member and the fixed member, the biasing means A protruding portion that is pressed against the other facing surface by the urging force is formed, and a concave portion is formed on the other facing surface into which the protruding portion enters when the second hinge member and the fixing member are rotated to a predetermined position. Hinged device,
An operating portion is provided at one end of the hinge shaft that protrudes from the bottom, and the hinge shaft is movable so that a larger frictional resistance than the urging force of the urging means is generated in the through hole of the fixing member. A hinge device that is press-fitted.   The first hinge member is symmetrically provided with a pair of connecting cylinders whose axes are aligned with each other, and the movable member, the biasing means, the hinge shaft, the fixed member, and the second hinge member are The two second hinge members are respectively connected to a pair of connecting cylindrical portions, and the two second hinge members are connected so as to be immovable in the axial direction of the connecting cylindrical portion. Hinge device.

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