KR100861179B1 - Two-axis hinge assembly - Google Patents

Abstract

Provided is a biaxial hinge device that can be manufactured at low cost.

The hinge main body (not shown) is provided so that the 1st, 2nd rotation members 22, 23 can be rotated centering around the 1st, 2nd rotation axis O1, O2 parallel to each other. One end of the link 34 is connected to the first rotation member 22 so as to be rotatable about a third rotation axis O3 parallel to the first and second rotation axes O1 and O2. The other end of the link 34 is connected to the second pivot member 23 so as to be rotatable about the fourth pivot axis O4 parallel to the first and second pivot axes O1 and O2. The third and fourth rotational axes O3 and O4 are arranged so as to be located opposite to each other with respect to the straight lines L1 passing through the first and second rotational axes O1 and O2.

Description

Biaxial Hinge Device {TWO-AXIS HINGE ASSEMBLY}

This invention relates to the biaxial hinge apparatus suitable for using for portable devices, such as a game machine and a mobile telephone.

In general, the biaxial hinge device includes a hinge main body, first and second pivot members provided on the hinge main body so as to be rotatable about a first and second pivot axis parallel to each other, and the first and second pivot members. The member is provided with the 1st, 2nd cogwheel which respectively provided so that rotation was impossible. The first and second gears are engaged with each other. Thereby, the 1st, 2nd rotation member rotates in the state which mutually cooperates.

However, when the first and second pivot members are connected to each other by using the first and second gears, the first and second pivots are divided by the backlash between the tooth surfaces of the first and second gears. There is a problem that the member is shaken in the circumferential direction. This is shown as shaking of the transmitter and the receiver when the biaxial hinge device is used in, for example, a mobile telephone. Therefore, in the biaxial hinge apparatus described in Patent Document 1 below, a frictional resistance generating means is provided between the hinge main body and the first and second rotating members, and the frictional resistance generating means generates the frictional resistance. This prevents the first and second pivotal members from shaking.

[Patent Document 1] Japanese Patent Laid-Open No. 2005-207465

However, in the biaxial hinge device described in Patent Document 1, there is a problem to be solved that the manufacturing cost increases in addition to problems such as shaking of the first and second rotating members. In other words, when the biaxial hinge device is used in a portable telephone, a small diameter cog wheel having an outer diameter of about 5 to 6 mm or less must be used as the first and second cog wheels. By the way, it is difficult to manufacture the gear wheel of small diameter precisely. In addition, two such cog wheels are required. For this reason, the problem that the manufacturing cost of a hinge apparatus rises has arisen.

MEANS TO SOLVE THE PROBLEM This invention provides the hinge main body, the 1st, 2nd rotation member provided in this hinge main body so that rotation was possible centering around the 1st, 2nd rotation axis parallel to each other, 1. A biaxial hinge device having rotation transmission means provided between first and second rotation members, wherein a link is used as the rotation transmission means, and one end of the link is formed from the first rotation axis of the first rotation member. It is connected to the separated part so that rotation is centered about the 3rd rotation axis parallel to the said 1st, 2nd rotation axis line, The other end of the said link is separated from the said 2nd rotation axis line of the said 2nd rotation member. A portion pivotably connected to a fourth pivot axis parallel to the first and second pivot axes, wherein the third pivot axis and the fourth pivot axis pass through the first and second pivot axes. In a straight line It is characterized in that arranged on the side opposite to each other.

In this case, approximately half of the side of the third rotational axis of the link is curved so as to expand in a direction away from the first rotational axis with respect to a straight line passing through the third and fourth rotational axis, and the link It is preferable to bend so that approximately half of the side of the said 4th rotation axis may expand toward the direction which separates from the said 2nd rotation axis line with respect to the straight line which passes through the said 3rd, 4th rotation axis line.

Further, at least one of the first rotating member and the second rotating member is provided with an engaging portion that prevents the first rotating member from rotating over a predetermined position in a predetermined direction by engaging the link. It is preferable that it is done.

According to this invention which has the said characteristic structure, since the 1st, 2nd rotation member is connected by the link, backlash like the case of using a cogwheel does not generate | occur | produce. Therefore, it is possible to prevent the first and second pivotal members from shaking in the circumferential direction. In addition, the link is much cheaper to manufacture than the cog wheels. In addition, there is no need to use two links, only one is sufficient. Therefore, the manufacturing cost of the hinge device can be reduced.

EMBODIMENT OF THE INVENTION Hereinafter, the best form for implementing this invention is demonstrated with reference to drawings.

1 to 11 show a mobile phone 1 in which the hinge device 10 according to the present invention is used. The mobile telephone 1 is provided with a talk side case 2 and a sign language side case 3. One end of the sending side case 2 and one end of the receiving side case 3 are connected so as to be rotatable by the hinge device 10.

The sending side case 2 consists of two half bodies (2A, 2B), and is formed in the rectangle whose thickness is comparatively thin. 8 to 11, a mounting recess 2b is formed at one end in the longitudinal direction of the front face 2a of the talk-side case 2. The hydration side case 3 consists of two half bodies 3A, 3B, and is formed in the rectangle whose thickness is comparatively thin. In addition, the sign language side case 3 is formed in substantially the same shape as the shape of the talk side case 2 when viewed from the plane, and is located in the folded position described later, Not only is it parallel with (2), but the whole overlaps with each other. At one end in the longitudinal direction of the front face 3a of the hydration side case 3, a mounting recess 3b is formed.

As shown in FIGS. 8-11, the one side part and the other side part of the hinge main body 11 of the hinge apparatus 10 can be rotated in the mounting recessed part 2b, 3b of each case 2, 3, respectively. It is accepted. As mentioned later, the hinge main body 11 is provided so that the 1st, 2nd connection arm parts 18 and 19 can rotate. The first connecting arm portion 18 is fixed to the talk-side case 2. Thus, the hinge main body 11 is connected to the talk-side case 2 so as to be rotatable about the first rotational axis O1. On the other hand, the second connecting arm portion 19 is fixed to the hydration side case 3. Thereby, the hinge main body 11 is connected to the hydration side case 3 so that rotation is possible centering on the 2nd rotation axis O2 parallel to the 1st rotation axis O1. As a result, the talk-side case 2 and the talk-side case 3 are connected by the hinge device 10 so as to be rotatable about the first and second pivot axes O1 and O2 parallel to each other. The rotation range of both cases 2 and 3 is regulated between the folded position shown in FIGS. 1 to 4 and 8 and the call position shown in FIGS. 5 to 7 and 9. The folded position is determined by the front face 3a of the hydration side case 3 colliding with the low-profile protrusion 2d formed on the front face 2a of the talk-side case 2. The call position is a position where the sign language side case 3 is rotated approximately 170 degrees from the folded position with respect to the talk side case 2, and the one end surfaces 2C and 3C of both cases 2 and 3 collide with each other. It is decided by. In addition, below, it is assumed that the talk-side case 2 is fixed in position for the convenience of description, and the talk-side case 3 rotates with respect to the talk-side case 2.

Moreover, the case 4 for cosmetics is attached to the exterior of the hinge main body 11. The case 4 consists of two half bodies 4A and 4B, and the two half bodies 4A and 4B are abutted against each other in the state which accommodated the hinge main body 11 between them. Therefore, the case 4 rotates integrally with the hinge main body 11.

The hinge device 10 not only connects the sending side case 2 and the receiving side case 3 so as to be rotatable around the first and second rotational axes O1 and O2, but also connects the receiving side case 3 to each other. It stops with a click feeling with a predetermined magnitude of force at the folded position and the call position. The hinge device 10 having such a function will be described in detail below.

The hinge apparatus 10 has the hinge main body 11, as shown to FIGS. The hinge main body 11 has one end side and the other end side (left end and right end in FIGS. 10 and 19 in the directions of the first and second rotation axes O1 and O2). The first main body part 12 and the 2nd main body part 13 arrange | positioned at each other, and are fitted and fixed to each other, are comprised. The hinge main body 11 may be integrally formed with the whole, without dividing into the 1st main body 12 and the 2nd main body 13. The hinge main body 11 is formed in substantially 8 shape in the cross section orthogonal to 1st, 2nd rotation axis O1, O2. And the hinge main body 11 is accommodated so that one side part and the other side part can rotate to each mounting recessed part 2b, 3b of the talk-side case 2 and the hydration-side case 3, respectively, When the case 3 rotates, it rotates relative with the case 4 with respect to the 1st, 2nd rotation axis | shaft O1, O2 about the sending side case 2 and the receiving side case 3, respectively.

As shown in FIG. 10 and FIG. 19, inside the hinge main body 11, the 1st, 2nd accommodating holes 14 and 15 extended on the 1st, 2nd rotation axis O1, O2 are formed, respectively. It is. The first and second support shafts 16 and 17 are inserted into the right ends of the first and second accommodation holes 14 and 15 so as to be rotatable about the first and second pivot axes O1 and O2, respectively. It is becoming. The right end portions of the first and second support shafts 16 and 17 protrude outward from the hinge body 11 and the case 4, and the first and second connection arm portions 18 and 19 are respectively provided at the right end portions. The right ends of the right half bodies 18A and 19A which form part of are fixed respectively. Therefore, the 1st, 2nd support shafts 16 and 17 are a 1st, 2nd rotation axis | shaft O1 with respect to the hinge main body 11, when the hydration side case 3 rotates with respect to the talk side. Rotate around O2). On the other hand, the left end of the left half body 18B, 19B which forms a part of the remainder of the 1st, 2nd connection arm part 18 and 19 is arrange | positioned so that rotation is possible on the 1st, 2nd rotation axis O1, O2. It is fixed to the left end of the 1st, 2nd rotation member 22, 23 mentioned later, respectively. Each of the left end portions of the right half bodies 18A and 19A and the right end portions of the left half bodies 18B and 19B are fixed to each other to form the first and second connecting arm portions 18 and 19. As described above, the first and second connecting arm portions 18 and 19 are fixed to the talk-side case 2 and the talk-side case 3, respectively. Thereby, the receiving side case 3 is connected to the speaking side case 2 so that rotation is possible about the 1st, 2nd rotation axis O1, O2.

At the left ends of the first and second accommodation holes 14 and 15, the first and second hinge shafts 20 and 21 are accommodated so as to be rotatable about the first and second pivot axes O1 and O2, respectively. It is. The left ends of the first and second hinge shafts 20 and 21 protrude outward from the hinge main body 11, and the first and second pivot members 22 and 23 are formed at the left and right ends of the first and second hinge shafts 20 and 21, respectively. It is externally inserted so that rotation is possible centering around 2nd rotation axis O1, O2, respectively. The first and second rotating members 22 and 23 penetrate the holding member 35 so as to be rotatable. The left ends of the first and second pivotal members 22, 23 protrude outward from the case 4, and the left end of the first and second pivoting members 22, 23 is fastened to the first and second connecting arm portions 18, The left ends of the left half bodies 18B and 19B of 19 are connected so as to be non-rotable, and not to move in the directions of the first and second pivot axes O1 and O2, respectively. Therefore, the first and second pivot members 22 and 23 do not move in the directions of the first and second pivot axes O1 and O2. Further, the first and second pivot members 22 and 23 rotate the first and second pivot axes relative to the hinge body 11 when the sign language side case 3 rotates with respect to the talk side case 2. Rotate around O1, O2). In addition, as will be described later, since the first and second rotating members 22 and 23 are connected to rotate in opposite directions by the link 34, when the sign language side case 3 rotates by an angle θ, the first and second rotating members 22 and 23 rotate. , The second rotating members 22, 23 rotate by approximately θ / 2 in the opposite directions. That is, when the sign language side case 3 rotates 170 degrees between the folded position and the call position, the first and second pivot members 22 and 23 rotate in opposite directions by approximately 85 degrees, respectively.

In the left end openings of the first and second accommodation holes 14 and 15, the first and second movable members 24 and 25 are not rotatable, respectively, and in the directions of the first and second pivot axes O1 and O2. It is inserted to be movable. The movable members 24 and 25 are urged toward the first and second rotating members 22 and 23 by the first and second coil springs 26 and 27 as means for applying a force. The center part of the movable members 24 and 25 has penetrated so that rotation by the 1st, 2nd hinge shafts 20 and 21 is possible.

The first cam member 28 is provided between the first pivot member 22 and the first movable member 24. The 1st cam member 28 is penetrated so that the center part can be rotated by the 1st hinge shaft 20. As shown in FIG. The first cam member 28 is pressed by the first coil spring 26 via the first movable member 24 and pressed against the first pivot member 22. Therefore, the first cam member 28 does not substantially move in the direction of the first rotational axis O1. Moreover, the 1st cam member 28 is connected to the 1st rotation member 22 so that rotation is impossible. Therefore, the first cam member 28 behaves integrally with the first rotation member 22. The first cam member 28 may be formed integrally with the first rotation member 22.

The second cam member 29 is provided between the second rotating member 23 and the second movable member 25. The 2nd cam member 29 is penetrated so that the center part can be rotated by the 2nd hinge shaft 21. As shown in FIG. A force is applied to the second cam member 29 via the second movable member 25 by the second coil spring 27, and is pressed against the second pivot member 23. Therefore, the second cam member 29 does not substantially move in the direction of the second rotation axis O2. In addition, the second cam member 29 is connected to the second rotation member 23 so as not to rotate. Therefore, the second cam member 29 behaves integrally with the second rotation member 23. The second cam member 29 may be formed integrally with the second rotation member 23.

On the other hand, the first and second rotating members 22 and 23 are formed of the first and second movable members 24 and 25 and the first and second cam members by the first and second coil springs 26 and 27. While a force is applied to the left through the 28 and 29, the hinge body 11 is applied to the right, but as shown in FIGS. 10 and 19, the first and second pivot members 22 and 23. ) Hits the left half body 18B, 19B of the first and second connecting arms 18 and 19 so as not to be moved leftward, and the right end section of the hinge body 11 is placed on the right half body 18A and 19A. Since the first and second pivoting members 22 and 23 and the hinge main body 11 do not move in the directions of the first and second pivotal axes O1 and O2, respectively, because they collide so as not to move to the right.

As shown in FIG. 23 and FIG. 24, on the surface of the first movable member 24 facing the first cam member 28, two spheres 30 are formed in a circumferential shape centering on the first pivot axis O1. Are disposed 180 ° apart from each other in the circumferential direction. Four engagement recesses 31 are formed on the opposing surface of the first cam member 28 with the first movable member 24. The four engagement recesses 31 are one set of two pieces. The engagement recesses 31A and 31B of each pair are arranged 180 degrees apart in the circumferential direction. Engaging recesses 31A and 31A are arranged 95 degrees apart in the circumferential direction, and engaging recesses 31B and 31B are also arranged 95 degrees apart in the circumferential direction. In addition, the four engagement recesses 31 are arranged on the same circumference as the circumference on which the sphere 30 is arranged. Similarly, on the opposite surface of the second cam member 29 of the second movable member 25, the spheres 32 are disposed 180 degrees apart from each other in the circumferential direction on the circumference around the second pivot axis O2. have. Four engagement recesses 33 are formed on the opposing surface of the second cam member 29 with the second movable member 25. The four engagement recesses 33 are one set of two pieces. The engaging recesses 33A and 33B of each pair are arranged 180 degrees apart in the circumferential direction. Engaging recesses 33A and 33A are arranged at 95 degrees apart in the circumferential direction, and engaging recesses 33B and 33B are also arranged at 95 degrees apart in the circumferential direction. In addition, the four engagement recesses 33 are arranged on the same circumference as the circumference on which the sphere 32 is arranged. Then, one set of the first coil spring 26, two spheres 30 and four engagement recesses 31, and the second coil spring 27, two spheres 32 and four engagement recesses When the sign language side case 3 is located within the predetermined range including the folded position or within the predetermined range including the call position by one set of the part 33, the sign language side case 3 rotates toward each position. Force is applied, and at each position, it is stopped with a feeling of click with a predetermined magnitude of force. In addition, at the position shifted from each predetermined range, the first and second rotating members 22 are caused by frictional resistance acting between the spheres 30 and 32 and the respective contact surfaces of the first and second cam members 28 and 29. And 23 are stopped at an arbitrary position, and further, the sign language side case 3 is stopped at an arbitrary position. Meanwhile, the specific configurations of the first and second coil springs 26 and 27, the spheres 30 and 32, and the engagement recesses 31 and 33 for achieving such an operation are the same as those of the known ones, and thus the detailed description thereof will be described. Omit.

As shown in FIG. 8, FIG. 9, and FIG. 20-FIG. 22, the 1st accommodating recess 22a which continues in the circumferential direction is formed in the opposing surface of the 1st rotation member 22 with the 1st cam member 28. As shown to FIG. It is. The outer side part of this 1st accommodation recessed part 22a is open toward the outer side from the outer peripheral surface of the 1st rotation member 22. As shown in FIG. One end of the link 34 is rotatably accommodated in the first accommodation recess 22a, and one end of the link 34 has a third rotation axis O3 parallel to the first rotation axis O1. It is connected to the 1st rotation member 22 and the 1st cam member 28 so that rotation is possible at the center.

On the opposing surface of the second cam member 29 of the second pivot member 23, a second accommodation recess 23a extending in the circumferential direction is formed. The outer side part of this 2nd accommodating recessed part 23a is open toward the outer side from the outer peripheral surface of the 2nd rotation member 23. As shown in FIG. The other end of the link 34 is accommodated in the 2nd accommodating recess 23a so that rotation is possible, and the other end of the link 34 is the 4th rotation axis O4 parallel to the 2nd rotation axis O2. ) Is rotatably connected to the second pivot member 23 and the second cam member 29.

The 3rd rotation axis line O3 is arrange | positioned apart from the 1st rotation axis line O1, and the 4th rotation axis line O4 is arrange | positioned apart from the 2nd rotation axis line O2. In addition, the distance between the first and third pivot axes O1 and O3 and the distance between the second and fourth pivot axes O2 and O4 are set equal to each other. The third rotation axis O3 and the fourth rotation axis O4 pass through the first and second rotation axes O1 and O2 as long as the sign language side case 3 is located between the folded position and the call position. It is arrange | positioned so that it may be located on the opposite side with respect to the straight line L1. Thereby, the 1st, 2nd rotation members 22 and 23 are connected so that they may rotate to the opposite direction. As shown in Fig. 21, when the sign language side case 3 is located at an intermediate position, the straight line L2 passing through the third and fourth pivot axes O3 and O4 intersects the straight line L1 and its center point C. And third and fourth rotational axes O3 and O4 are arranged. In other words, when the sign language side case 3 is located at the intermediate position, the third and fourth rotational axes O3 and O4 are arranged so as to be located in point symmetry with respect to the center point C of the straight line L1.

About half of the link 34 of the third rotational axis O3 and approximately half of the fourth rotational axis O4 are formed as curved portions 34A and 34B, respectively. As shown in FIG. 20, the curved portion 34A swells in a radially outward direction from the first rotational axis O1 with respect to the straight line L2 when the hydration-side casing 3 is located at the folded position. It is curved. As a result, the distance between the first rotational axis O1 and the curved portion 34A can be enlarged as compared with the case where the curved portion 34A is formed in a linear shape, and the first hinge shaft 20 and the link ( It is possible to sufficiently secure the thickness of the first pivotal member 22 between 34) (curved portion 34A). As shown in FIG. 22, the curved part 34B swells in the radially outward direction from the second pivot axis O2 with respect to the straight line L2 when the sign language side case 3 is located at the call position. It is curved. As a result, the distance between the 2nd rotation axis O2 and the curved part 34B can be enlarged compared with the case where the curved part 34B is formed in linear form, and the 2nd hinge axis 21 and the link ( 34) The thickness of the second rotating member 23 between the curved portions 34B can be sufficiently secured.

As shown in FIG. 20, when the hydration side case 3 is located in a folded position, some gap exists between the inner side surface 22b of the 1st accommodating recessed part 22a, and the curved part 34A. The curved portion 34A does not hit the side surface 22b. Therefore, the rotation range of the sign language side case 3 is not restricted by the side surface 22b and the curved part 34A. However, before the sign language side 3 hits the talk side case 2, the curved portion 34A hits the side surface 22b, and accordingly, from the talk position of the sign language side case 3 to the folded position. The rotation range to the direction to which it faces may be regulated, and also the rotation range to the arrow A direction (one direction) in FIG. 20 of the 1st rotation member 22 may be regulated. In this case, when the link 34 hits the side surface 22b, the rotational position of the first rotating member 22 is the stop position, and the side surface 22b becomes the engaging portion.

As shown in FIG. 22, when the sign language side case 3 is located in a call position, the curved part 34B does not hit the side surface 23b of the 2nd accommodating recess 23a. Therefore, the rotation range in the arrow B direction (other direction) of the sign language side case 3 is not restricted by the side surface 23b and the curved part 34B. However, before the sign language side case 3 hits the talk side case 2, the curved portion 34B is caused to hit the side surface 23b, thereby moving from the folded position of the sign language side case 3 to the call position. The rotation range in the direction may be regulated, and further, the rotation range in the arrow B direction of the second rotation member 23 may be regulated. In this case, when the link 34 hits the side surface 23b, the rotational position of the first rotating member 22 is the stop position, and the side surface 23b becomes the engaging portion. Of course, the link 34 may hit the side surface 22b when rotated in the arrow A direction, and the side surface 23b when rotated in the arrow B direction.

In the mobile telephone provided with the hinge device 10 of the above structure, it is assumed that the sign language side case 3 is located at the folded position shown in FIG. When the sign language side case 3 is rotated from the folded position toward the talk position, the second pivot member 23 rotates about the second pivot axis O2 counterclockwise in FIG. 8. Then, the first rotating member 22 connected to the second rotating member 23 via the link 34 rotates in the clockwise direction of FIG. 8 about the first rotating axis O1. However, in this case, since the sending side case 2 is fixed in position and further the first rotating member 22 is fixed in position, the hinge main body 11 and the case 4 correspond to the rotation angle of the first rotating member 22. Rotates counterclockwise around the first rotation axis O1. On the contrary, when the sign language side case 3 rotates from the talk position shown in FIG. 9 toward the folded position, the second pivot member 23 rotates clockwise in FIG. 9 about the second pivot axis O2. At the same time, the hinge main body 11 and the case 4 rotate in the clockwise direction of FIG. 9 about the first rotation axis O1.

In the hinge apparatus 10, since the first and second rotating members 22 and 23 are connected by the link 34, there is no backlash as in the case of using a gear. Therefore, no shaking occurs between the first and second rotating members 22, 23, and it is possible to prevent the sending side case 2 and the receiving side case 3 from shaking. In addition, the link 34 has a simple structure compared to the cog wheels and can be manufactured at low cost. In addition, only one link 34 may be used. Therefore, the manufacturing cost of the hinge apparatus 10 can be reduced.

In addition, this invention is not limited to said embodiment, It can change suitably in the range which does not deviate from the summary.

For example, in said embodiment, although each half of the one end side and the other end side of the link 34 is each curved, you may form the whole straight.

As shown in Fig. 25, the first and second rotating members 22 and 23 are formed with concave portions 22c and 23c having a circular cross section, or one end and the other end of the link 34, respectively. A spherical portion may be formed between the shaft portions 34a and 34b having a circular cross section, and the shaft portions 34a and 34b may be fitted to the recess portions 22c and 23c so as to be rotatable.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a cellular phone in which a hinge device according to the present invention is used in a state in which a receiver side case is turned to a folded position.

2 is a plan view in the same state.

3 is a view seen from the X direction of FIG.

4 is a view seen from the Y direction of FIG.

5 is a perspective view showing the same mobile phone in a state in which a sign language side case is rotated at a call position.

6 is an X arrow view of FIG. 5.

7 is a plan view in the same state.

8 is an enlarged cross-sectional view taken along line X-X of FIG. 2.

FIG. 9 is an enlarged cross-sectional view taken along the line X-X of FIG. 7.

FIG. 10 is an enlarged cross-sectional view taken along the line Y-Y of FIG. 2.

11 is an exploded perspective view of a part of the same mobile telephone, omitted.

It is a perspective view which shows the 1st Embodiment of the hinge apparatus which concerns on this invention in the state which rotated the hydration side case to the folded position.

It is a top view in the same state.

14 is a front view in the same state.

15 is a left side view in the same state.

16 is a right side view in the same state.

It is a perspective view which shows the same embodiment in the state which rotated the sign language side case to the call position.

18 is a plan view in the same state.

19 is an enlarged cross-sectional view taken along the line X-X of FIG. 15.

20 is a cross-sectional view taken along line X-X of FIG. 19.

FIG. 21 is a sectional view similar to FIG. 20 when the hydration side case is rotated to an intermediate position. FIG.

FIG. 22 is a sectional view similar to FIG. 20 when the sign language side case is rotated to a call position. FIG.

23 is an exploded perspective view of the same hinge device.

24 is an exploded perspective view of the same hinge apparatus as viewed from a direction different from that of FIG. 23.

It is a figure which shows the principal part of 2nd Embodiment of the hinge apparatus which concerns on this invention.

<Description of the code>

L1: straight line (passed through the 1st, 2nd rotation axis)

L2: straight line (passed through 3rd and 4th rotation axis)

O1: 1st rotation axis

O2: 2nd rotation axis

O3: 3rd rotation axis

O4: 4th rotation axis

10: hinge device

11: hinge body

22: first rotating member

22b: side (fitting part)

23: second rotating member

23b: side (fitting part)

34: link

34A: curved part (approximately half of one end of link)

34B: Bend (approximately half of other end of link)

Claims (3)

A hinge main body, first and second pivotal members provided on the hinge main body so as to be rotatable about a first and a second pivotal axis parallel to each other, and rotation transmission means provided between the first and second pivotal members. In the provided biaxial hinge device, A link is used as the rotation transmission means, and one end of the link is centered on a third rotational axis parallel to the first and second rotational axes at a portion separated from the first rotational axis of the first rotational member. Rotatably connected to each other, and the other end of the link is rotatable about a fourth rotational axis parallel to the first and second rotational axes at a portion spaced apart from the second rotational axis of the second rotational member. And the third rotational axis line and the fourth rotational axis line are disposed opposite to each other with respect to a straight line passing through the first and second rotational axis lines. The half of the said 3rd rotation axis side of the said link expands toward the direction which separates from the said 1st rotation axis line with respect to the straight line which passes through the said 3rd, said 4th rotation axis line. Half of the side of the fourth rotational axis of the link is curved so as to expand in a direction away from the second rotational axis with respect to a straight line passing through the third and fourth rotational axis. Biaxial hinge device. The said 1st rotation member is a predetermined position in a predetermined direction of Claim 1 or 2 by engaging with the said link in either or both of the said 1st rotation member and the said 2nd rotation member. Biaxial hinge device, characterized in that the engaging portion for preventing the rotation over.

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