WO2007055174A1

WO2007055174A1 - Two-axis hinge device

Info

Publication number: WO2007055174A1
Application number: PCT/JP2006/322103
Authority: WO
Inventors: Kenji Tomizawa
Original assignee: Sugatsune Kogyo Co., Ltd.
Priority date: 2005-11-14
Filing date: 2006-11-06
Publication date: 2007-05-18
Also published as: JPWO2007055174A1; JP4523036B2

Abstract

A first click mechanism (60) is between a main shaft section (11B) of a hinge body (11) and a rotation member (12). A second click mechanism (70) is provided between the rotation member (12) and a first connection member (13). A coil spring (64) as urging means of the first click mechanism (60) is commonly used as urging means of the second click mechanism (70). The number of urging means used in a two-axis hinge device (10) is reduced to reduce its production costs.

Description

Specification

Biaxial hinge device

Technical field

[0001] The present invention relates to a biaxial hinge device having two rotation axes whose angles to each other are perpendicular.

Background art

[0002] As a conventional hinge device of this type, for example, there are those described in Patent Documents 1 and 2 below. These biaxial hinge devices include a hinge body, a pivot member connected to the hinge body to be rotatable about a first pivot axis, and first pivots on both sides of the pivot member. And a pair of connecting members connected to be rotatable about a second rotation axis that is perpendicular to the axis. A first click mechanism is provided between the hinge body and the rotation member to stop the rotation member at a predetermined rotation position with a predetermined amount of force. A second click mechanism is provided between the rotating member and the connecting member to stop the connecting member at a predetermined rotational position with a predetermined amount of force.

[0003] When the hinge device having the above structure is used in a mobile phone, the hinge body is fixed to the transmitting side housing, and the pair of connecting members are fixed to the receiving side housing. As a result, the receiving housing is connected to the transmitting housing so as to be rotatable about the first and second rotation axes. The receiving housing can be directed in various directions by appropriately rotating about the first and second rotation axes. In addition, the receiving housing can be stopped with a click feeling at each predetermined rotation position by the first and second click mechanisms.

Patent Document 1: Japanese Unexamined Patent Application Publication No. 2004-187186

Patent Document 2: Japanese Patent Application Laid-Open No. 2004-332827

Disclosure of the invention

Problems to be solved by the invention

[0004] In the above-described conventional hinge device, the first click mechanism and the second click mechanism are provided independently of each other. Therefore, the first click mechanism and the second click mechanism are composed of different parts, and as a result, the manufacturing cost of the hinge device increases. It was.

Means for solving the problem

In order to solve the above problems, the present invention has a hinge body having a main shaft portion and a connecting hole, and the main shaft portion is rotatably fitted in the connecting hole, whereby the hinge A rotation member connected to the main body so as to be rotatable about the first rotation axis, and a second rotation axis whose angle between the first rotation axis and the side of the rotation member is a right angle A connecting member provided so as to be pivotable about the first click mechanism, a first click mechanism provided between the hinge body and the rotating member, and a connecting member provided between the rotating member and the connecting member. In the two-axis hinge device provided with the second click mechanism, the second click mechanism is disposed on the side of the rotating member so that the first click mechanism protrudes from the inner peripheral surface of the connection hole. A first movable member provided so as to be movable along the rotation axis and an outer peripheral surface of the main shaft portion are formed. And the first movable member is detachably engaged with the rotation of the rotation member, and the second click mechanism includes the connecting member and the first movable member. The second movable member disposed between the second movable member and the second movable member so as to be movable in the second rotational axis direction and non-rotatable; and the connecting member and the second movable member. Engagement protrusions provided on one of the opposing surfaces facing each other in the second rotational axis direction and the engagement projections provided on the other opposing surface, and with the rotation of the connecting member, The projecting portion has an engaging recess for releasably engaging, and an urging means is disposed between the first movable member and the second movable member, and the urging means is the first movable member. The member is pressed against the outer peripheral surface of the main shaft portion, and the second movable member is urged toward the connecting member to oppose the engaging protrusion to the other side. It is characterized in that it is shared by the first, second click mechanism bets as urging means for pressing each other.

The invention's effect

[0006] According to the present invention having the above-described characteristic configuration, since the biasing means is shared by the first and second click mechanisms, the first and second click mechanisms are each provided with the biasing means. The number of biasing means can be reduced as compared with the conventional hinge device. Therefore, the cost required for the first and second trick mechanisms can be reduced, and consequently the manufacturing cost of the hinge device can be reduced. Brief Description of Drawings

[0007] FIG. 1 is a perspective view showing a mobile phone using a biaxial hinge device according to the present invention in a state in which a receiving-side casing is positioned in a closed position.

FIG. 2 is a perspective view showing the mobile phone in a state in which the receiving housing is located at the call position.

FIG. 3 is a perspective view showing the mobile phone in a state in which the receiving housing is located at a reverse open position.

[4] FIG. 4 is a perspective view showing the mobile phone in a state in which the receiving housing is located at the unfolded position.

FIG. 5 is a perspective view showing the mobile phone in a state in which the receiving side housing is rotated by approximately 30 ° with the closing position force also about the second rotation axis.

FIG. 6 is a perspective view showing an embodiment of a biaxial hinge device according to the present invention.

FIG. 7 is a side view of the same embodiment.

FIG. 8 is an enlarged sectional view taken along line XX in FIG.

FIG. 9 is a cross-sectional view taken along the line X—X in FIG. 8, showing the receiving housing in the closed position.

FIG. 10 is a cross-sectional view similar to FIG. 9 showing the receiving side housing in a state where the closing position force is also rotated by approximately 45 ° about the first rotation axis.

FIG. 11 is a cross-sectional view taken along line Y—Y in FIG. 8 with the receiving side housing positioned at the closed position.

FIG. 12 is a cross-sectional view similar to FIG. 11 showing a state where the receiving side housing is also rotated 180 ° about the first rotation axis.

FIG. 13 is an exploded perspective view showing one embodiment of a biaxial hinge device according to the present invention.

FIG. 14 is an exploded perspective view of the embodiment in which a directional force different from that in FIG. 13 is also seen.

Explanation of symbols

[0008] L1 first rotation axis

L2 Second rotation axis

10 Biaxial hinge device 11 Hinge body

11B spindle

12 Rotating member

12d connecting hole

13 First connecting member (connecting member)

13a Opposite surface

60 First click mechanism

62 Sphere (first movable member)

64 Coil spring (biasing means)

66 Engagement groove (engagement part)

70 Second click mechanism

71 Movable member (second movable member)

71a Opposite surface

73 Sphere (engagement protrusion)

74 1st cam recess (engagement recess)

75 Second cam recess (engagement recess)

76 3rd cam recess (engagement recess)

BEST MODE FOR CARRYING OUT THE INVENTION

The best mode for carrying out the present invention will be described below with reference to FIGS. 1 to 14.

1 to 5 show a mobile phone 1 in which a biaxial hinge device 10 according to the present invention is used. The mobile phone 1 is provided with a transmitter housing 2 and a receiver housing 3. The transmitter-side housing 2 has a thin rectangular parallelepiped shape, and various operation buttons 4 and a microphone (not shown) are provided on the front surface 2a. The receiver-side casing 3 has a rectangular parallelepiped shape with a small thickness, and has almost the same length and width as the transmitter-side casing 2. A liquid crystal screen 5, a speaker (not shown), and the like are provided on the front surface 3 a of the receiver side housing 3. The transmitter-side housing 2 and the receiver-side housing 3 are connected to each other about the first and second rotation axes L1 and L2 orthogonal to each other by a biaxial hinge 10 (see FIGS. 6 to 14). Has been. However, for convenience of explanation, here Assume that the transmitter case 2 is fixed in position and the receiver case 3 rotates with respect to the transmitter case 2. In FIGS. 1 to 5, the two-axis hinge device 10 is covered with the cover 6 so that portions protruding from the transmitting side housing 2 and the receiving side housing 3 are not visible from the outside. The hinge device 10 is not shown. The first rotation axis L1 is substantially orthogonal to the front surface 2a of the transmission side housing 2. Therefore, the second rotation axis L2 is substantially parallel to the front surface 2a. Also, the second rotation axis L2 extends in the width direction of the transmitter-side housing 2. When the receiver-side housing 3 is located at the closed position shown in FIG. 1, the front surface 3a of the receiver-side housing 3 is substantially orthogonal to the first rotation axis L1 and substantially parallel to the second rotation axis L2. ing.

[0010] Now, it is assumed that the receiver-side casing 3 is located at the closed position shown in FIG. When the receiver-side housing 3 is located at the closed position, the receiver-side housing 3 is located at the same position as the transmitter-side housing 2 in the circumferential direction around the first rotation axis L1. In other words, when the receiving side housing 3 is viewed from the direction of the first rotation axis L1, both side surfaces of the receiving side housing 3 are positioned on the same plane as both side surfaces of the transmitting side housing 2. The receiver-side housing 3 overlaps the transmitter-side housing 2 in the first rotation axis L1 direction. When the receiving housing 3 is in the closed position, the front surface 3a of the receiving housing 3 hits the front surface 2a of the transmitting housing 2. The receiver-side housing 3 can rotate 180 ° from the closed position in the clockwise and counterclockwise directions (hereinafter referred to as forward and reverse directions) around the first rotation axis L1. 2 It can be rotated 180 ° from the closed position around the rotation axis L2. As a result, the receiving side housing 3 has an open position where the back surface 3b hits the front surface 2a of the transmitting side housing 2, and the back surface 3b of the receiving side housing 3 hits the front surface 2a of the sending side housing 2. , The receiving housing 3 is in the first opening axis L1 direction, the reverse opening position where it overlaps the transmitting housing 2 (see Fig. 3), the closing position force 180 ° rotation around the first rotation axis L1 It can be rotated to various positions such as the deployed position (see Fig. 4).

[0011] As described above, the receiver-side housing 3 can rotate in the range of 180 ° in the forward and reverse directions around the first rotation axis L1, and the second rotation axis L2 As a center, it can rotate in the range of 180 ° from the closed position to the open position. However, the pivoting range of the receiver-side housing 3 may be limited by the hinge device 10 that does not necessarily pivot around such a pivoting range. For example, when the receiving-side housing 3 rotates with the closing position force about the second rotation axis L2, it rotates only to the call position shown in FIG. 2 that is 160 ° away from the closed position. I can't. Further, when the receiver-side housing 3 is rotated about the first and second rotational axes L1 and L2 by the hinge device 10, it is stopped at a predetermined rotational position with a click feeling. . The hinge device 10 having such a function will be described below.

As shown in FIGS. 6 to 14, the hinge device 10 includes a hinge main body 11, a rotating member 12, a first connecting member (connecting member) 13, and a second connecting member 14 as main components.

[0013] As shown in FIG. 8, the hinge body 11 includes a plate portion 11A having a flat plate shape, and a main shaft portion 11B having a lower end fixed in a state of standing vertically to the upper surface 1 la of the substrate portion 11A. Have The board portion 11A is fixed to the transmission side housing 2. The axis of the main shaft portion 11B is aligned with the first rotation axis L1.

As shown in FIG. 8, FIG. 13, and FIG. 14, the rotating member 12 has a hollow rectangular parallelepiped main body portion 12a and the respective axis lines on both sides of the main body portion 12a. The first and second cylinder portions 12b and 12c are formed. A connecting hole 12d penetrating through the main body 12a is formed at the center of the main body 12a. The connecting hole 12d is arranged so that its axis is orthogonal to the axes of the first and second cylindrical portions 12b, 12c. The main shaft portion 11B is rotatably fitted in the connecting hole 12d. Thereby, the rotation member 12 is connected to the hinge body 11 so as to be rotatable about the rotation axis L1. In addition, the axes of the first and second cylinder portions 12b and 12c are made to coincide with the second rotation axis L2.

[0015] As shown in FIGS. 6 and 8, the first connecting member 13 is disposed in front of the first cylindrical portion 12b so as to substantially contact the tip surface of the first cylindrical portion 12b. The first connecting member 13 is rotatably connected to the rotating member 12 via a shaft 15. The axis of the shaft 15 is aligned with the second rotation axis L2. Therefore, the first connecting member 13 is rotatable with respect to the rotating member 12 about the second rotation axis L2. A second connecting member 14 is rotatably fitted to the second cylindrical portion 12c. Therefore, the second connecting member 14 is also connected to the rotating member 12 so as to be rotatable about the second rotating axis L2. The second connecting member 14 is not allowed to escape to the distal end side with respect to the second cylindrical portion 12c.

The receiver-side housing 3 is fixed to the first and second connecting members 13 and 14. As a result, the receiving side housing 3 is connected to the transmitting side housing 2 so as to be rotatable about the first and second rotation axes LI and L2. When the receiver-side housing 3 rotates about the first rotation axis L1 When the rotating member 12 rotates integrally with the receiving housing 3 and the receiving housing 3 rotates about the second rotation axis L2, the first and second connecting members 13, 14 Rotates integrally with the receiver case 3. Therefore, the respective rotation positions of the rotation member 12 and the first and second connecting members 13 and 14 are given the same names as the respective rotation positions of the receiver-side housing 3.

[0017] As described above, the rotation member 12 rotates integrally with the reception-side casing 3 around the first rotation axis L1. Therefore, the rotation range of the rotation member 12 around the first rotation axis L1 is limited to a range of 180 ° in the forward / reverse direction of the closing position force in the same manner as the receiving side housing 3. In order to limit the rotation range of the rotation member 12 in this way, a first rotation restriction mechanism 20 shown in FIG. 8 is provided between the hinge body 11 and the rotation member 12.

As shown in FIGS. 11 and 12, the first rotation restricting mechanism 20 has a rotation restricting member 21. The rotation restricting member 21 has a ring portion 21a and an abutment portion 21b that is formed integrally with the outer peripheral surface of the ring portion 21a and protrudes in the outer peripheral surface force radial direction. A lower end portion of the main shaft portion 11B is rotatably fitted to the ring portion 21a. On the other hand, the abutment portion 21b is a stagger portion 22 formed so as to protrude from the upper surface of the substrate portion 11A when the rotation restricting member 21 also rotates clockwise about the first rotation axis L1. It strikes against the other end surface of the stagger portion 22 when it strikes one end surface of the screw and rotates counterclockwise. When the abutting portion 21b abuts against one end surface and the other end surface of the stagger portion 22, the rotation range in the forward / reverse direction around the first rotation axis L1 of the closing position force of the rotation restricting member 21 is restricted. Has been.

Here, if the rotation member 12 is always rotated integrally with the rotation restricting member 21, the rotation range of the rotation member 12 is the same as the rotation range of the rotation restricting member 21. Be the same. As a result, the rotation range in the forward / reverse direction of the closing position force of the rotation restricting member 21 is the length of one end surface force of the stagger portion 22 in the circumferential direction around the first rotation axis L1 to the other end surface. It should be smaller than 180 ° by only half the angle α (see Fig. 12), which is the sum of the angle corresponding to and the angle corresponding to the width of the contact portion 21b. However, as described above, the actual rotation range of the rotation member 12 is 180 ° in the forward and reverse directions.

The rotation member 12 is rotatable with respect to the rotation restricting member 21 in order to secure 180 ° as a rotation range of the rotation member 12 in the forward and reverse directions. 11 and 12, the lower end of the rotating member 12 is spaced apart in the circumferential direction about the first rotation axis L1. First and second contact surfaces 23 and 24 are formed. The first and second contact surfaces 23 and 24 are formed when the rotating member 12 rotates relative to the rotation restricting member 21 in the forward and reverse directions by an angle α relative to the first rotation axis L 1. The first and second contact surfaces 23 and 24 are arranged so as to abut against one side surface and the other side surface of the contact portion 21b, respectively. Therefore, the rotating member 12 can be rotated relative to the rotation restricting member 21 by an angle α. In other words, the rotation member 12 has the rotation restricting member 21 corresponding to the angle ex until one of the first and second contact surfaces 23, 24 hits the contact portion 21 b and the other force hits the contact portion 21 b. It can rotate more greatly. Therefore, the rotation range of the rotation member 12 around the first rotation axis L 1 is the closed position of the rotation member 12 that cannot be narrowed by the circumferential lengths of the stagger portion 22 and the contact portion 21b. The range of rotation in the forward and reverse direction around the first rotation axis L 1 from the center is 180 °

A second rotation restricting mechanism 30 shown in FIG. 7 and FIG. 8 is provided between the rotating member 12 and the second connecting member 14. The second rotation restricting mechanism 30 stops when the receiving housing 3 is turned to the open position around the second rotation axis L2 when the receiving housing 3 is also closed. In order to limit the rotation range, the strobe portion 22 and the contact protrusion 31 provided on the outer peripheral surface of the second connecting member 14 are provided. The abutting protrusion 31 is disposed so as to abut against the stagger portion 22 when the receiving side housing 3 and the second connecting member 14 are also rotated by 160 ° about the second rotation axis L2. When the abutting projecting portion 31 hits against the stubbing portion 22, the receiving side housing 3 is prevented from rotating further in the direction away from the closing position force. The position of the receiving side housing 3 at this time is the call position.

[0022] The stagger portion 22 is provided on the base plate portion 11A, and the abutting protrusion 31 is provided on the second connecting member 14. Therefore, when the second connecting member 14 rotates together with the rotating member 12 around the first rotation axis L1 in the closed position force in the forward / reverse direction by a predetermined angle (for example, 20 °) or more, the stagger portion 22 and the contact protrusion 31 are separated from each other in the circumferential direction around the first rotation axis L 1 and cannot be brought into contact with each other. Therefore, in this state, the receiving side housing 3 can be rotated 160 ° or more from the closed position about the second rotation axis L2, and when it is rotated 180 °, the back surface 3b of the receiving side housing 3 is turned to the transmitting side. It hits the front surface 2a of the housing 2 and can no longer be rotated. At this time, the rotational position of the receiver-side housing 3 is the open position. However, the receiving case 3 Is actually able to rotate to the open position when the receiving housing 3 and the rotating member 12 are positioned at the locking positions described later, and to the open position at other positions. I can't.

[0023] The rotating member 12 has a closed position, a closed position force, a position 90 degrees away from the first rotation axis L1 in the forward and reverse directions, and a position 180 degrees away (hereinafter, three positions excluding the closed position). In this case, the hinge body 11 is non-rotatably locked. The rotation member 12 is locked to the hinge body 11 by a locking mechanism 40 provided between the hinge body 11 and the rotation member 12.

As shown in FIGS. 8 to 12, the locking mechanism 40 has a locking member 41. The locking member 41 has a substantially rectangular frame shape, and a through hole 41a is formed in the locking member 41. The second cylinder portion 12c is inserted through the through hole 41a. The through hole 41a has a larger diameter than the second cylindrical portion 12c, and a gap of a predetermined size is formed between the inner peripheral surface of the through hole 41a and the outer peripheral surface of the second cylindrical portion 12c. Therefore, the locking member 41 can move relative to the second cylindrical portion 12c in the first rotation axis L1 direction (vertical direction in FIGS. 9 and 10). A guide recess 42 extending in parallel with the first rotation axis L1 is formed on the side surface of the rotation member 12 in which the second cylinder portion 12c is formed. A locking member 41 is fitted to the guide recess 42 so as to be movable in the longitudinal direction of the guide recess 42 and not movable in the width direction of the guide recess 42. Therefore, the locking member 41 rotates integrally with the rotation member 12 when the rotation member 12 rotates about the first rotation axis L1. In other words, when the locking member 41 stops with respect to the hinge body 11, the rotating member 12 also stops. Note that the locking member 41 substantially abuts against the end surface of the second connecting member 14 fitted to the second cylindrical portion 12c, so that it can escape from the guide recess 42 in the direction of the second rotation axis L2. It is blocked.

[0025] Four position restricting holes 43 are formed in the substrate portion 11A of the hinge body 11. The position control holes 43 are arranged at 90 ° apart from each other in the circumferential direction on one circumference around the first rotation axis L1. Each position restricting hole 43 has a protrusion 4 lb formed on the lower surface of the locking member 41 when the rotating member 12 rotates to the closed position or any stop position. The position restricting hole 43 is detachably fitted (engaged). When the projecting part 4 lb fits into the position restricting hole 43, the locking member 41 rotates about the first rotation axis L1. Can not do. As a result, the rotating member 12 cannot rotate with respect to the hinge body 11. The protruding portion 41b is inserted into the position restricting hole 43 until the locking member 41 substantially comes into contact with the upper surface 11a of the substrate portion 11A. Therefore, when the locking member 41 is moved upward along the first rotation axis L1 from the substrate portion 11A by the amount of protrusion of the protrusion 41b, the protrusion 41b escapes from the position restricting hole 43, and the substrate portion 11A. The locking state of the locking member 41 is released by

As shown in FIGS. 8 to 10, a moving mechanism 50 is provided between the second connecting member 14 and the locking member 41. The moving mechanism 50 moves the locking member 41 between a fitting position where the protruding portion 41b is fitted in the position restricting hole 43 and an escape position where the protruding portion 41b is escaped from the position restricting hole 43. And a through hole 41a of the locking member 41 and an arcuate protrusion 51 formed in the second connecting member 14.

[0027] First and second projecting portions 52, 53 are formed on the inner peripheral surface of the through hole 41a. The first and second projecting portions 52, 53 are substantially in the circumferential direction around the second rotation axis L2 so as to face the first rotation axis L1 with the second rotation axis L2 in between. They are 180 ° apart. The distance in the first rotation axis L1 direction between the first and second projecting portions 52 and 53 is larger than the outer diameter of the second cylindrical portion 12c by an amount substantially equal to the thickness of an arc-shaped projecting portion 51 described later. It's getting bigger. Accordingly, the locking member 41 is movable in the first rotation axis L1 direction by the thickness of the arcuate protruding portion 51 with respect to the second cylindrical portion 12c.

[0028] The arcuate protrusion 51 is formed on the end surface of the second connecting member 14 facing the locking member 41 so as to protrude toward the locking member 41, and is centered on the second rotation axis L2. It extends in an arc along the circumference. The arcuate protrusion 51 is inserted into the through hole 41a. The radius of curvature of the inner peripheral surface of the arc-shaped projecting portion 51 is set to be substantially the same as the radius of the outer peripheral surface of the second cylindrical portion 12c, and the inner peripheral surface of the arc-shaped projecting portion 51 is the same as that of the second cylindrical portion 12c. It is in contact with the outer peripheral surface so that it can rotate. As described above, the thickness of the arcuate protrusion 51 is such that the distance force between the first and second protrusions 52 and 53 is substantially equal to the value obtained by subtracting the outer diameter of the second cylindrical part 12c. .

As shown in FIG. 9, when one end in the circumferential direction of the arc-shaped protrusion 51 enters between the first protrusion 52 and the second cylindrical part 12c arranged on the lower side, the first protrusion 52 is pushed downward by the arcuate protrusion 51 and the locking member 41 is moved downward. The locking member 41 is The bottom surface is moved downward until it substantially comes into contact with the top surface 11a of the substrate portion 11A, that is, to the fitting position. As a result, the protrusion 41b is fitted into the position restriction hole 43. In a state where the arc-shaped protruding portion 51 enters between the first protruding portion 52 and the second cylindrical portion 12c, the second protruding portion 53 disposed on the upper side substantially contacts the outer peripheral surface of the second cylindrical portion 12c. ing. This is because the thickness of the arc-shaped protruding portion 51 is set to be approximately equal to the value obtained by subtracting the outer diameter of the second cylindrical portion 12c from the distance between the first and second protruding portions 52 and 53. In addition, a part on the other end side of the outer peripheral surface of the arcuate protrusion 51 is in contact with the inner peripheral surface of the through hole 41a. Therefore, when the arcuate protrusion 51 enters between the first protrusion 52 and the second cylinder part 12c, the locking member 41 is moved to the fitting position by the second cylinder part 12c and the arcuate protrusion 51 in the first time. The position is fixed so as not to move in the direction of the movement axis L1, and the protruding portion 41b is maintained in a state of being fitted in the position restricting hole 43.

[0030] As shown in Fig. 10, the second connecting member 14 is at a predetermined angle (30 ° in this embodiment) from the position shown in Fig. 9 (the position when the receiver-side housing 3 is located at the closed position). ) When the above rotation is performed, one end of the arc-shaped projecting portion 51 escapes from between the first projecting portion 52 and the second cylindrical portion 12c, and the other end of the arc-shaped projecting portion 51 is the second projecting portion. Enter between 53 and the second cylindrical portion 12c. Then, the second protrusion 53 is pushed upward by the arcuate protrusion 51, and the locking member 41 moves upward by the thickness of the arcuate protrusion 51 to reach the release position. The thickness of the arcuate protrusion 51 is set slightly thicker than the distance between the fitting position and the escape position, that is, the fitting depth of the protrusion 41b in the fitting position with respect to the position restricting hole 43. Therefore, when the arc-shaped projecting portion 51 enters between the second projecting portion 53 and the second tube portion 12c, the projecting portion 41b escapes upward from the position control hole 43. In this state, the first protrusion 52 is substantially in contact with the second tube portion 12c, and the outer peripheral surface of the arc-shaped protrusion 51 is substantially in contact with the inner peripheral surface of the through hole 41a. Accordingly, the locking member 41 is fixed at the release position, and as a result, the protruding portion 41b is maintained in a state of being escaped from the position restricting hole 43.

[0031] When the position of the arc-shaped projecting portion 51 shown in FIG. 9 is also rotated by a predetermined angle (160 ° in this embodiment) or more, the arc-shaped projecting portion 51 becomes the second projecting portion 53 and the second cylindrical portion 12c. The other end in the circumferential direction of the arcuate protrusion 51 enters between the first protrusion 52 and the second cylinder 12c. As a result, the locking member 41 moves downward to the fitting position, and the protrusion 4 lb is fitted into the position restricting hole 43. Therefore, the other end of the arcuate protrusion 51 is the first protrusion. The protrusion 41b is maintained in the state where the position restricting hole 43 is fitted also by entering between 52 and the second cylindrical portion 12c.

[0032] Here, one end in the circumferential direction of the arc-shaped projecting portion 51 enters between the first projecting portion 52 and the second cylindrical portion 12c because the receiving-side casing 3 is in the closed position and the opened position therefrom. The other end in the circumferential direction of the arcuate protrusion 51 enters between the first protrusion 52 and the second cylindrical part 12c. Is when the receiver-side housing 3 is located between the open position and a position 20 ° away from it to the closed position (160 ° away from the closed position). Therefore, with the receiving side housing 3 in the locked position, the range between the closed position and the position 30 ° away from the second rotation axis L2 or 160 ° away from the closed position. By rotating the receiving side housing 3 to the range between the position and the open position, the receiving side housing 3 can be locked to the transmitting side housing 2 so as not to rotate about the first rotation axis L1. On the other hand, when one end or the other end of the arc-shaped projecting portion 51 escapes between the first projecting portion 52 and the second cylindrical portion 12c, the other end or one end of the arc-shaped projecting portion 51 is almost at the same time. The length in the circumferential direction is set so that the portion enters between the second protruding portion 53 and the second cylindrical portion 12c. Therefore, when the arcuate protrusion 51 is positioned between the position where the receiver-side housing 3 is 30 ° away from the closed position and the position 160 ° away from the closed position, the protrusion 41b escapes from the position restricting hole 43, and the receiver side The housing 3 can be rotated about the first rotation axis L1.

[0033] When the receiving case 3 is located at a position other than the closed position and the locking position, the circumferential direction around the first rotation axis L1 between the protruding portion 41b and the position restricting hole 43 is set. Since the positions are different from each other, the protrusion 41 b of the locking member 41 cannot be fitted into the position restricting hole 43. Therefore, the locking member 41 cannot move downward from the escape position shown in FIG. 10 to the fitting position shown in FIG. For this reason, when the receiver-side housing 3 is located at a position other than the closed position and the locking position, the rotation range centered on the second rotation axis L2 is the closed position force second rotation axis L2. It is constrained between 30 ° and 160 ° as the center, and cannot be turned to the closed or open position.

[0034] As described above, when the receiver case 3 is positioned at a position 30 ° to 160 ° away from the closed position around the second rotation axis L2, the locking mechanism of the receiver case 3 is The locked state by 40 is released. As a result, the receiving housing 3 can freely rotate about the first rotation axis L1. You should be able to. However, in practice, the first click mechanism 60 is provided between the hinge body 11 and the rotating member 12, and the first click mechanism 60 causes the receiving housing 3 to be locked by the locking mechanism 40. Is stopped with a predetermined amount of force at the same position. The first click mechanism 60 is configured as follows.

As shown in FIG. 8, a guide hole 61 is formed in the rotating member 12. The guide hole 61 is disposed on the side portion of the rotating member 12 where the first cylindrical portion 12b is formed. The guide hole 61 is also arranged substantially perpendicular to the first rotation axis L1 and substantially parallel to the second rotation axis L2. One end of the guide hole 61 opens in the inner peripheral surface of the connecting hole 12d, and the other end opens in the first cylindrical portion 12b. A spherical body (first movable member) 6 2 and a pressing member 63 having an outer diameter substantially the same as the inner diameter of the guide hole 61 are provided on the inner end (the connecting hole 12d side) and the outer end of the guide hole 61, respectively. Are inserted so as to be movable in the longitudinal direction of the guide holes 61. Adjacent ends of the spherical body 62 and the pressing member 63 are in contact with each other. A part of the sphere 62 can project from the guide hole 61 into the connecting hole 12d. A part of the pressing member 63 protrudes from the guide hole 61 into the first cylindrical portion 12b. The end of the pressing member 63 protruding into the first tube portion 12b is urged toward the connecting hole 12d via the washer 65 by a coil spring (biasing means) 64 housed in the first tube portion 12b. Has been. As a result, the spherical body 62 is biased by the coil spring 64 via the washer 65 and the pressing member 63 toward the connecting hole 12d.

[0036] Four engaging grooves (engaging portions) 66 are formed on the outer peripheral surface of the main shaft portion 11B of the hinge body 11. The respective engagement grooves 66 extend in parallel with the first rotation axis L1, and are arranged at equal intervals in the circumferential direction of the main shaft portion 11B, that is, 90 ° apart from each other. In addition, each engaging groove 66 is inserted into (engaged with) the spherical body 62 when the receiving side housing 3 and the rotating member 12 are in the closed position or the locking position. Are arranged as follows. When the spherical body 62 enters the engaging groove 66, it strikes only the both side edges in the width direction of the engaging groove 66 and is separated from the center portion in the width direction of the engaging groove 66. Also, the sphere 62 is urged by the coil spring 64. Therefore, when the spherical body 62 enters the engaging groove 66, the receiving side housing 3 and the rotating member 12 have a click feeling with a predetermined amount of force when the main shaft portion 11B is in the locked position. Be stopped. A shaft body (first movable member) is used in place of the sphere 62, and a recess is formed on the surface of the shaft body facing the main shaft portion 11B, while the rotating member 12 is rotated on the outer peripheral surface of the main shaft portion 11B. A convex part (engagement part) that enters and exits the concave part as it moves can be formed! /.

As shown in FIG. 8, a second click mechanism 70 is provided between the rotating member 12 and the first connecting member 13. The second click mechanism 70 clicks the first connecting member 13 that rotates about the second rotation axis L2 at a closed position, a call position, and an open position with a predetermined amount of force. This is to stop with a sense of lick, and to stop the receiving side housing 3 with a click feeling at each of the closed position, the call position, and the open position, and is configured as follows.

[0038] That is, a movable member (second movable member) 71 is not rotatable about the rotation axis L1 and is movable in the direction of the second rotation axis L2 at the distal end of the first cylindrical portion 12b. Is fitted. The coil spring 64 is disposed inside the first cylindrical portion 12b located between the movable member 71 and the washer 65. By this coil spring 64, the movable member 71 is biased toward the first connecting member 13 side. As shown in FIGS. 8 and 13, a pair of guide grooves 72, 72 are formed on a surface 71 a of the movable member 71 facing the first connecting member 13. The pair of guide grooves 72, 72 extend in the radial direction of the movable member 71, and are arranged 180 ° apart in the circumferential direction around the second rotation axis L2. In the guide grooves 72, 72, spheres (engaging protrusions) 73, 73 are accommodated so as to be movable in the longitudinal direction of the guide groove 72, respectively.

As shown in FIG. 8 and FIG. 14, the first cam recess (engagement recess) 74 and the second cam recess (engagement recess) are provided on the surface 13a of the first connecting member 13 facing the movable member 71. A pair of 75 and third cam recesses (engagement recesses) 76 are formed. The pair of first cam recesses 74, 74 are disposed 180 ° apart in the circumferential direction on one circumference centered on the second rotational axis L2. The pair of second cam recesses 75, 75 are arranged 180 degrees apart from each other on the circumference having a larger diameter than the circumference where the first cam recess 74 is arranged. The third cam recesses 76 and 76 are arranged 180 degrees apart from each other on the same circumference as the circumference where the second cam recess 75 is arranged.

[0040] The first, second, and third cam recesses 74, 75, and 76 are formed in the closed position, the call position, and the open position when the receiver-side casing 3 rotates about the second rotation axis L2. The spheres 73 are arranged so as to enter each other when the coil spring 64 is in any position. The urging force is converted into a rotation urging force.

That is, the first cam recess 74 is between the closed position of the receiver-side housing 3 and the position where the force is also separated from the open position side by a predetermined angle (for example, 10 °) about the second rotation axis L2. The spherical body 73 enters one end of the first cam recess 74 in the circumferential direction centering on the second rotation axis L2, and the spherical body 73 strikes the inclined bottom surface of the first cam recess 74. It is arranged in. The inclined bottom surfaces of the sphere 73 and the first cam recess 74 abut against each other, thereby converting the urging force of the coil spring 64 into a rotating urging force. With this turning biasing force, the first connecting member 13 and the receiving-side casing 3 are rotated about the second turning axis L2 in the direction of the open position force toward the closed position, and the receiving-side casing 3 The front surface 3a is abutted against the front surface 2a of the transmission side housing 2. Then, the receiving side housing 3 is maintained in the closed position.

[0042] The second cam recess 75 is located at a position where the receiving-side housing 3 is separated by 160 ° from the closed position, and the force is also separated by a predetermined angle (for example, 10 °) toward the closed position about the second rotation axis L2. Sphere 73 enters one end of the second cam recess 75 in the circumferential direction around the second rotation axis L2, and the sphere 73 tilts the second cam recess 75. It is arranged so that it touches the bottom face. The inclined bottom surfaces of the sphere 73 and the second cam recess 75 abut against each other, thereby converting the urging force of the coil spring 64 into a rotating urging force. Due to this turning biasing force, the first connecting member 13 and the receiving case 3 are turned in the direction of the force from the closed position to the open position about the second turning axis L2. In this case, when the receiving-side housing 3 is located within a predetermined angle range from the closed position to the forward / reverse direction around the first rotation axis L1, the contact protrusion 31 of the second connecting member 14 is The receiver case 3 is rotated until it hits the section 22, that is, to the call position. Then, the receiving housing 3 is maintained at the call position. When the receiver-side housing 3 is positioned at a position other than the position within the predetermined angular range and the locking position in the forward and reverse directions around the first position axis L1 of the closing position force, the arcuate protrusion The part 51 is rotated until it comes into contact with the first projecting part 52. The position of the reception-side casing 3 when the arcuate protrusion 51 hits the first protrusion 52 is also the same position as the call position. Therefore, in this case as well, the receiving housing 3 is maintained at the call position. When the receiving side housing 3 is located at any of the locking positions, the receiving side housing 3 can be turned to the open position side beyond the call position. Accordingly, the receiver-side housing 3 is connected to the bottom surface of the second cam recess 75 and the sphere 73. Therefore, the turning biasing force based on the converted coil spring 64 causes the calling position to be turned to the open position side. When the receiving case 3 is slightly moved beyond the talking position to the open position, the sphere 73 is fitted into the center of the second cam recess 75 in the circumferential direction centering on the second rotation axis L2. As a result, the receiving-side casing 3 is stopped with a click feeling with a predetermined magnitude of force.

[0043] The third cam recess 76 is formed when the spherical body 73 is located when the receiver-side casing 3 is located between the open position and a position away from the open position by a predetermined angle (for example, 10 °). It is arranged so that it enters one end of the third cam recess 76 and the sphere 73 hits the inclined bottom surface of the third cam recess 76. The inclined bottom surfaces of the sphere 73 and the third cam recess 76 abut against each other, thereby converting the urging force of the coil spring 64 into a rotating urging force. With this turning biasing force, the first connecting member 13 and the receiving case 3 are turned in a direction to face the open position from the closed position. The receiver-side housing 3 is rotated until the back surface 3b hits the front surface 2a of the transmitter-side housing 2, that is, to the open position. And it maintains in an open position.

[0044] Since the first cam recess 74 and the second cam recess 75 are separated from each other in the radial direction about the second rotation axis L2, the spherical body 73 is formed of the first cam recess 74 and the second cam. When moving between the recesses 75, not only does it move in the circumferential direction around the second rotation axis L2, but also moves in the radial direction. Therefore, a guide groove 77 extending in a spiral shape is formed between the first cam recess 74 and the second cam recess 75. The sphere 73 moves between the first cam recess 74 and the second force recess 75 through the guide groove 77. Since the second cam recess 75 and the third cam recess 76 are arranged on the same circumference and are arranged close to each other in the circumferential direction, no guide groove is formed between them. However, a guide groove may be formed between the second and third cam recesses 75 and 76.

In the biaxial hinge device 10 having the above-described configuration, since one coil spring 64 is used in common for the first click mechanism 60 and the second click mechanism 70, the first and second click mechanisms 60 are used. , 70 can be reduced as compared with the case where each is provided with a coil spring. Therefore, the manufacturing cost of the biaxial hinge device 10 can be reduced.

It should be noted that the present invention is not limited to the above-described embodiment, and can be appropriately changed within the scope without departing from the gist thereof. For example, in the above embodiment, the movable member 71 is provided with the sphere 73, and the first connecting member 13 is provided with the first, second, and third cam recesses 74, 75, 76. The member 71 may be provided with first, second, and third cam recesses, and the first connecting member 13 may be provided with a sphere. Further, instead of the sphere 73, the movable member 71 may be integrally provided with a hemispherical or other protrusion. Further, when the first connecting member 13 is provided with the first, second, and third cam recesses 74, 75, 76 as in this embodiment, the sphere 73 is directly attached to the rotating member 12, It may be provided so as to be movable in the direction of the second rotation axis L2 and not rotatable in the circumferential direction around the second rotation axis L. In that case, the sphere 73 becomes the second movable member.

Industrial applicability

A biaxial hinge device according to the present invention is configured to rotatably connect a transmitter and a receiver of a mobile phone, or to rotatably connect a main body and a display of a portable game machine. It can be used as a hinge.

Claims

The scope of the claims

A hinge main body having a main shaft portion and a connecting hole, and the main shaft portion is rotatably fitted in the connecting hole, whereby the hinge main body is rotatably connected around the first rotation axis. A pivot member, a connecting member provided on the negative side of the pivot member so as to be pivotable about a second pivot axis whose angle with the first pivot axis is a right angle, and the hinge A biaxial hinge device comprising: a first click mechanism provided between a main body and the rotating member; and a second click mechanism provided between the rotating member and the connecting member. A first movable member movably provided along the second rotation axis on the negative side of the rotating member so that a click mechanism protrudes from the inner peripheral surface of the connecting hole; The first movable part is formed on the outer peripheral surface of the main shaft part, and the first movable part as the rotating member rotates. There an engaging portion which is disengageably engaged,

The second click mechanism is disposed between the connecting member and the first movable member, and is provided on the rotating member so as to be movable in the second rotating axis direction and non-rotatable. A movable member, an engagement protrusion provided on one of the opposed surfaces of the connecting member and the second movable member facing each other in the second rotational axis direction, and provided on the other opposed surface, An engagement recess that engages and disengages the engagement protrusion with the rotation of the connecting member;

An urging means is disposed between the first movable member and the second movable member. The urging means presses the first movable member against the outer peripheral surface of the main shaft portion, and the second movable member. The first click mechanism and the second click mechanism are commonly used as a biasing means that biases the engaging protrusion and the other opposing surface to each other. Axial hinge device.