KR20090098686A - Hinge device with two axes and an electronic apparatus - Google Patents

Abstract

A biaxial hinge apparatus performing the rotation sequence of a predetermined first frame body and a second frame body are opened/closed and electronic device are provided to reduce a cost and the number of components by using the rotation regulation unit. A first shaft is opposite to a hinge case(2). In shaft is the hinge case and same direction, it is installed rotatably. The first shaft is fixed to the end part of the first frame body(11a, 11b). The second shaft is fixed to the end part of second frame bodies. In case the first frame body and the second frame body are opened and closed in relatively between shaft and said the second shaft, a rotation controller determines the rotation sequence of the second shaft. The torque difference between the second swing torque and the first swing torque are used the rotation control unit.

Description

Hinge device with two axes and an electronic apparatus}

The present invention relates to a biaxial hinge device and an electronic device that are performed in a predetermined rotational order when opening and closing the first frame body and the second frame body.

In small electronic devices such as PDAs, notebook PCs, Zaurus (trademarks), and cellular phones, there is a first frame body provided with an operating part such as a keyboard on an upper surface, and a second frame body provided on a lower surface of a display such as an LCD. It is known that the first frame body and the second frame body are connected to each other by a hinge device so as to be openable and closed. The electronic device is rotatably connected to the upper end of the first frame through a hinge device, and the lower surface including the display portion of the second frame is polymerized on the upper surface including an operation part such as a keyboard of the first frame. It is possible to open the second frame with respect to the first frame in a polymerized state. It is possible to expose the operation portion and the display portion.

As this hinge apparatus, the biaxial hinge apparatus which connects a 1st frame body and a 2nd frame body rotatably using two hinge shafts is proposed (for example, refer patent document 1, 2). The two-axis hinge device includes a hinge case and a first hinge rotatably installed at one end of the hinge case, and a second hinge rotatably installed at the other end of the hinge case, and includes a first frame through the first hinge. And the hinge case are rotatably connected and the second frame and the hinge case are rotatably connected through the second hinge so that the first frame and the second frame are rotatably connected through the two-axis hinge device. .

[Patent Document 1] Japanese Patent Application Laid-Open No. 2005-83462

  [Patent Document 2] US Patent Application Publication No. 2007/0234521 A1

In the biaxial hinge device described in Patent Document 1, the first frame and the second frame are rotatably connected by using the first hinge and the second hinge, but the first hinge and the second hinge are fixed members and hinge shafts. And the rotating member, the movable member, the coil spring, the sphere, and the engaging recess, respectively, and the rotating operation when opening and closing the second frame body with respect to the first frame body is performed in a predetermined rotational sequence. That is, the first hinge is a fixed member fixed to the first frame body, a hinge shaft rotatably supported by the fixing member, a pivot member mounted on the hinge shaft and simultaneously fitted to the hinge case, A movable member which is brought into surface contact with the rotating member, penetrates the hinge shaft and engages with the fixing member and is movable only in the axial direction of the hinge shaft, and a movable member provided between the movable member and the fixing member is urged on the rotating member side. A coil spring, two spheres embedded on the opposite side of the rotating member of the movable member and two spheres engaged with the two spheres, and two engaging recesses respectively provided on the movable member and the opposite side of the rotating member. Then, when the hinge case is rotated with respect to the first frame, the sphere of the movable member moves the engagement recess of the rotating member from one side to the other. The second hinge has almost the same configuration as the first hinge, and when the hinge case is rotated with respect to the second frame, the sphere of the movable member of the second hinge moves the engagement recess of the rotating member of the second hinge from one side to the other. . For this reason, the inclination angle of the inclined surface of the engaging recess of the first hinge to which the sphere of the first hinge moves and the inclined surface of the engaging recess of the second hinge to which the sphere of the second hinge moves is adjusted to the second frame relative to the first frame. It is possible to set such that the rotational motion when opening and closing the frame is performed in a predetermined rotational order. However, since the first hinge and the second hinge are formed by the fixing member, the hinge shaft, the rotating member, the movable member, the coil spring, the sphere and the engagement recess, respectively, the number of parts is high, and the structure is complicated, and the cost is high. There is a problem that is high.

Moreover, although the 1st frame body and the 2nd frame body which use a 1st hinge and a 2nd hinge are connected to the biaxial hinge apparatus described in patent document 2 rotatably, when opening and closing a 2nd frame body with respect to a 1st frame body, No detailed structure is described for the rotational movement of the rotational structure to be performed in a constant rotational order. For example, the engaging portions engaged with each other in the first frame and the second frameal body are respectively provided so that the rotational motion is performed in the constant rotational order. Although proposed, however, in addition to the biaxial hinge device, there is a need for a structure for attaching the engaging portions to the first frame and the second frame, or an apparatus for manufacturing the structure, and the structure is complicated and the cost is high.

SUMMARY OF THE INVENTION An object of the present invention is to provide a two-axis hinge device and a electronic device having the two-axis hinge device, which have a small number of parts and can cost down in a simple structure in performing the rotation operation in a constant rotational order. Is in.

The biaxial hinge device according to the present invention for achieving the above object is a hinge case which is connected to the first frame body provided with an operation unit such as a keyboard on the upper surface, and the second frame body provided with a display unit on the lower surface so as to be openable and closeable. And a first shaft fixed to an end of the first frame body rotatably opposed to the hinge case and rotatably disposed in the same direction, and a second shaft fixed to an end of the second frame body. When the first frame and the second frame are opened and closed relatively in the polymerized state between the two shafts, a rotation control means is provided which determines the order in which the first shaft and the second shaft rotate. The rotation control means utilizes a torque difference between a first rotational torque generated in the rotation of the shaft of the first shaft and a second rotational torque generated in the rotation of the shaft of the second shaft. It shall be.

In the two-axis hinge device according to the present invention, the rotation control means is a cam mechanism for generating the first rotation torque and the second rotation torque, and a rotation for regulating the rotation angles of the first shaft and the second shaft. Characterized in that it consists of regulatory means.

According to the present invention, there is provided a hinge shaft and a first shaft fixed to an end portion of the first frame body rotatably opposed to the hinge case and rotatably all installed in the same direction, and a second shaft fixed to the end portion of the second frame body. Between the shaft and the second shaft, when the first frame and the second frame body relatively opened and closed in the polymerized state, the rotation control means for determining the order in which the first shaft and the second shaft rotates, A cam mechanism which rotates the first shaft and the second shaft in a predetermined rotational order when opening and closing the first frame and the second frame, and which rotates the control means on the first shaft and the second shaft; It is a simple structure composed of rotation control means for regulating the rotation angles of the first shaft and the second shaft. Furthermore, the number of parts is small and the cost can be reduced.

In the two-axis hinge device according to the present invention, the cam mechanism is in the hinge case, such as the first cam body and the second cam body mounted to face the first shaft and the second shaft to face each other. A first cam follow-up and a second cam flow-up, each of which is in contact with the first cam body and the second cam body and slidably controls each rotation; It is preferable that the elastic means be constructed in between. In the biaxial hinge apparatus according to the present invention, a plurality of convex portions are provided on the outer circumferences of the first cam body and the second cam body of the cam mechanism, and the first cam flow-up and the second cam flow-up It is preferable that each convex part, and the convex parts to be enclosed by the rotation angle of the said 1st shaft and the said 2nd shaft, are provided, respectively.

Moreover, in the biaxial hinge apparatus which concerns on this invention, it is preferable that the said rotation control means is provided between the said 1st shaft and the said 2nd shaft, and the said hinge case. In the biaxial hinge apparatus according to the present invention, the rotation control means includes a first rotation control means provided between the first shaft and the hinge case, and the second shaft and the hinge case. It is preferable that it is comprised by the 2nd rotation control means provided. In the two-axis hinge device according to the present invention, the first rotation control means includes a first rotation control body having a first A rotation control convex portion attached to the first shaft and the first A rotation control. A second rotation control body configured to engage with the convex portion and at least one first rotation control portion provided on the hinge case, wherein the second rotation control means has a second rotation control convex portion attached to the second shaft; In addition to engaging with the 2A rotation control convex portion, it is preferable that the 2B rotation control is provided in the hinge case. Further, in the two-axis hinge device according to the present invention, the rotation control means includes a first cam flow-up and a second cam flow during a rotation operation in which either shaft of the first shaft and the second shaft is a point. It is preferable to include a slide motion control means for regulating the slide motion of the up and regulating the rotational motion with the other shaft as the point either of the first shaft and the second shaft.

In the biaxial hinge apparatus according to the present invention, a cable insertion hole is provided in the first shaft and the second shaft in the axial direction, respectively, and a cable inserted through the cable insertion hole is connected to the first frame body. It is preferable that the said 2nd frame body is electrically connected. Moreover, in the biaxial hinge apparatus which concerns on this invention, it is preferable that the cover which covers the hinge case with the said cable is attached to the hinge case so that attachment or detachment is possible.

In the biaxial hinge apparatus according to the present invention, when the rotation control means opens the first frame body and the second frame body in a closed polymerized state, first, the hinge case is simultaneously formed with the second frame body. Opening by rotating the shaft to a point, and after the hinge case is regulated by the first rotation control means of the rotation control means, the second frame body is rotated and opened simultaneously with the second shaft, It is preferable that the rotation is restricted by the second rotation control means when the rotation angle is rotated up to. In the biaxial hinge apparatus according to the present invention, when the rotation control means closes the first frame body and the second frame body in a personality state of a use angle or more, first, the second frame body points the second shaft. It is preferably configured to close the first shaft at the point with the hinge case after the rotation is regulated by the second rotation control means.

Moreover, the electronic device which concerns on this invention becomes a 1st frame body which provided the operation part like a keyboard in the upper surface, and the 2nd frame body which provided the display part in the lower surface, and uses a pair of said biaxial hinge apparatus which concerns on this invention mentioned above. And opening and closing the first frame body and the second frame body. According to the present invention, as described above, the hinge case and the hinge case are provided with a first shaft fixed to an end of the first frame body rotatably opposed to the hinge case and rotatably installed in the same direction and a second shaft fixed at the end of the second frame body. When the first frame and the second frame are relatively opened and closed between the first shaft and the second shaft, rotation control means is provided for determining the order in which the first shaft and the second shaft rotate. The means is used to generate the shaft rotation of the first shaft by using the torque difference between the first rotational torque generated by the axial rotation of the first shaft and the second rotational torque generated by the axial rotation of the second shaft. The torque difference between the first rotational torque to be generated and the second rotational torque generated in the shaft rotation of the second shaft is used. Can be carried out with each other, Also small number of parts with a simple structure it is possible to achieve a cost reduction.

As described above, the first case includes a hinge shaft and a first shaft fixed to an end of the first frame body rotatably opposed to the hinge case and rotatably installed in the same direction, and a second shaft fixed to an end of the second frame body. When the first frame and the second frame are opened and closed relatively in the polymerized state between the first shaft and the second shaft, rotation control means for determining the order in which the first and second shafts rotate is provided. The rotation control means comprises a cam mechanism acting on the first shaft and the second shaft, and rotation control means for regulating the rotation angles of the first shaft and the second shaft, so that the rotation operation can be performed in a predetermined rotational order. In addition, the structure is simple and the number of parts is small and the cost can be reduced.

EMBODIMENT OF THE INVENTION Hereinafter, an example of the biaxial hinge apparatus and electronic device which concern on this invention is described in detail based on an accompanying drawing.

1 to 4 are diagrams showing an example of an electronic apparatus provided with a biaxial hinge device according to the present invention. 5-14 is a figure which shows an example of the biaxial hinge apparatus which concerns on this invention. In the biaxial hinge apparatus according to the present invention, as shown in Figs. 1 to 10, the first frame body 11 having the operating unit 13, such as a keyboard unit, is provided on the upper surface and the second frame body provided with the display unit 14 on the lower surface. It is to connect (12) rotatably. In addition, the 1st frame body 11 and the 2nd frame body 12 are described with an imaginary line in FIGS.

Although the electronic device 10 which concerns on this invention is demonstrated especially in PDA, it is not limited to this, For example, the notebook type PC, the portable terminal, such as Zaurus (trademark), a mobile telephone, a calculator, a pocket computer, Good for portable game consoles. Although an example of the electronic device 10 is demonstrated to a PDA below, it is not limited to this.

The first frame body 11 has a substantially flat horizontally rectangular shape, and is formed of, for example, a first A frame body 11a that is turned outwardly and a first B frame body 11b that is turned inward. On the upper surface which consists of the inner surface of the 1st frame body 11, the operation part 13, such as a keyboard part, is provided, for example. In the vicinity of both ends of the front end portion of the first frame body 11, the second frame body 12 is rotatably connected in the longitudinal direction via two biaxial hinge devices 1 of the present invention. The second frame body 12 has a substantially planar substantially horizontal rectangular shape substantially the same as the first frame body 11, and is formed of the second A frame body 12a that is outward and the second B frame body 12b that is inward, so that the first frame body 12 It has a size capable of covering the upper surface of 11) over the entire surface. A display portion 14 such as an LCD is provided on the lower surface of the second frame body 12, for example. That is, in the electronic device 10, the second frame 12 is polymerized on the upper surface of the first frame 11 so that the operation portion 13 and the display portion 14 such as the keyboard portion are blocked (see Fig. 2). The second frame 12 is rotated in the longitudinal direction with respect to the first frame 11 via two biaxial hinge devices 1 so that the operation unit 13 is operatively exposed, and the display unit 14 is horizontally It is configured as the state exposed (refer FIG. 4). The two biaxial hinge apparatuses 1 are formed symmetrically, and only one side will be described, the other description will be omitted, and the same members will be denoted by the same reference numerals and the description thereof will be omitted.

1 to 13, the biaxial hinge device 1 according to the present invention, the first case is rotatably opposed to the hinge case (2) and the hinge case (2) and rotatably installed in the same direction as shown in Figs. A first shaft 3 fixed to an end of the frame body 11 and a second shaft 4 fixed to an end of the second frame body 12, and between the second shaft 4 with the first shaft 3; Rotation control means (5) which determines the order in which the first shaft (3) and the second shaft (4) rotate when the first frame body (11) and the second frame body (12) are opened and closed relatively in the polymerization state thereof. The rotation control means (5) is a rotation of the cam mechanism (7), the first shaft (3) and the second shaft (4) acting on the first shaft (3) and the second shaft (4). The rotation control means 9 which regulates the angle is characterized in that it is configured.

The hinge case 2 is formed in substantially rectangular cylindrical shape, and is formed by the 1st hinge support piece 21 and the 2nd hinge support piece 22 which the two opposing sides of this end part extended, respectively. Circular hinge supports 23 and 24 are provided in the first hinge supporting piece 21 and the second hinge supporting piece 22, respectively. The tip ends of the first hinge support piece 21 and the second hinge support piece 22 are formed in a semicircular shape. The hinge case 2 is provided with a cover attaching hole 28 for attaching the hinge cover 18 with, for example, a screw 29 or the like. The hinge cover 18 covers the hinge case 2 at the same time as the cable 17 described later, and has a through hole 18a through the screw 29 or the like.

When the hinge case 2 is in a closed state in which the first frame body 11 and the second frame body 12 are polymerized, the first frame body 11 or the front end portion of the first frame body 11 and the second frame body 12 is formed. It is in the state extended in the thickness direction of the 2nd frame 12. As shown in FIG. The length of the hinge case 2 in the longitudinal direction is formed to a length shorter than the thickness in which the first mold body 11 and the second mold body 12 are polymerized, for example. The first shaft 3 is inserted into the hinge support hole 23 of the first hinge support piece 21 at the lower part of the hinge case 2, and the second hinge support piece at the top of the hinge case 2 is provided. The second shaft 4 is inserted into the hinge supporting hole 24 of (22).

The first shaft 3 is in the hollow shaft. The inside of the first shaft 3 is formed of a cable insertion hole 3b through which a cable 17 for electrically connecting the first frame body 11 and the second frame body 12 is inserted. One end of the first shaft 3 is provided with a flange portion 3a having a diameter larger than that of the hinge support hole 23. The length in the axial direction of the first shaft 3 is formed to be longer than the length between the first hinge support pieces 21. The outer shape of the first shaft 3 is formed in an almost small plate shape in which two opposing parts are cut out in parallel. Moreover, the outer periphery of the tip part which is the other end part of the 1st shaft 3 is also formed in substantially small plate shape in which two opposing parts were cut out in parallel. The first bracket 35 is attached to the distal end of the first shaft 3.

The first bracket 35 is mounted to the first frame body 11, for example, a mounting piece 36 having a through hole 35a to be mounted by screws or the like and a distal end of the first shaft 3. (37) is provided. The mounting portion 37 is provided with an almost small plate-shaped mounting hole 38 which is mounted in a state of being fitted to the outer periphery of the distal end of the first shaft 3. The first shaft 3 is inserted into the hinge supporting holes 23 of the two first hinge supporting pieces 21, respectively, and is formed at the distal end portion of the first shaft 3 protruding from the first hinge supporting piece 21. The first bracket 35 can be rotated through the first shaft 3 to the hinge case 2 by inserting the mounting hole 38 of the mounting portion 37 of the first bracket 35 and joining the tip portion thereof. It is mounted.

The second shaft 4 is in the hollow shaft. The inside of the second shaft 4 is formed as a cable insertion hole 4b through which a cable 17 for electrically connecting the first frame body 11 and the second frame body 12 is inserted. One end portion of the second shaft 4 is provided with a flange portion 4a having a diameter larger than that of the hinge support hole 24. The length in the axial direction of the second shaft 4 is formed to be longer than the length between the second hinge support pieces 22. The external shape of the 2nd shaft 4 is formed in the substantially small plate shape which cut | disconnected the two opposing locations in parallel. Moreover, the outer periphery of the front end part which is the other end part of the 2nd shaft 4 is also formed in the substantially small plate shape which cut | disconnected in parallel. A second bracket 45 is attached to the distal end of the second shaft 4.

The second bracket 45 is mounted to the second frame body 12, for example, a mounting portion 46 having a through hole 45a to be mounted by screws or the like and a distal end portion of the second shaft 4 ( 47). The mounting portion 47 is provided with an almost small plate-shaped mounting hole 48 that is fitted in a state of being fitted to the outer periphery of the distal end of the second shaft 4. The second shaft 4 is inserted into the hinge support holes 24 of the two second hinge support pieces 22, respectively, and the second shaft protrudes from the hinge support holes 24 of the second hinge support pieces 22. The second bracket 45 is connected to the hinge case 2 by inserting the tip end portion (4) into the mounting hole 48 of the mounting portion 47 of the second bracket 45 and joining the tip portion. It is mounted so as to be rotatable through (4). As a result, the first frame body 11 and the second frame body 12 are rotatably connected via the biaxial hinge device 1. The biaxial hinge apparatus 1 is equipped with the rotation control means 5 for performing rotation operation in a predetermined rotation order.

The rotation control means 5 regulates the rotation angle of the cam mechanism 7 and the first shaft 3 and the second shaft 4 acting on the first shaft 3 and the second shaft 4. It is comprised by the means 9, For example, it is provided between the 1st shaft 3 and the 2nd shaft 4 in the hinge case 2. As shown in FIG. The cam mechanism 7 is, for example, in the hinge case 2, and the first cam body 71 and the second cam body 73 which are mounted so as to face the first shaft 3 and the second shaft 4 apart from each other. As shown in the hinge case 2, the first cam flow-up 72 and the second cam which are in contact with the first cam body 71 and the second cam body 73 to control each rotation so as to be slidable. It consists of the elastic means 75 piled up between the flow-up 74 and such 1st cam flow-up 72 and the 2nd cam flow-up 74. As shown in FIG. The rotational torque generated by the cam mechanism 7 during the shaft rotation of the first shaft 3 is called the first rotational torque, and the rotational torque generated during the shaft rotation with the second shaft 4 is the second rotational torque. It is called.

Both the first cam body 71 and the second cam body 73 are formed almost in a cylindrical shape. The inner mold of the first cam body 71 is formed in a substantially small plate shape that is fitted to the outer periphery of the first shaft 3, and rotates about the hinge case 2 simultaneously with the first shaft 3. have. Moreover, the inner shape of the 2nd cam body 73 is formed in the substantially small plate shape attached to the outer periphery of the 2nd shaft 4, and rotates with respect to the hinge case 2 simultaneously with the 2nd shaft 4. As shown in FIG. It is supposed to be. In the hinge case 2 between the first cam body 71 and the second cam body 73, a first cam flow up 72, a second cam flow up 74 and elastic means 75 are provided. have.

The first cam flow-up 72 and the second cam flow-up 74 are formed in substantially the same cross-section and have a substantially square shape, and are disposed in the hinge case 2 so as to face the inner side of the square shape. Protruding portions 72a and 74a protruding into the compression spring 75a, which are elastic means 75, are provided at almost the center of the inner surface of the bottom of the first cam flow-up 72 and the second cam flow-up 74, respectively. . Moreover, although the compression spring 75a was used as the elastic means 75, it is not limited to this, You may use another elastic means. The compression spring 75a is provided between the cam flowups 72 and 74 with the projections 72a and 74a and the end portions 72b and 74b received by the first cam flowup 72 and the second cam flowup 74. The first cam flow-up 72 and the second cam flow-up 74 are attached to the first cam body 71 and the second cam body 73. Nearly central portions of the bottoms of the first cam flow-up 72 and the second cam flow-up 74 are provided with first cam projections 77 and second cam projections 79 having a substantially triangular cross section. These first cam protrusions 77 and the second cam protrusions 79 are in contact with the outer circumference of the first cam body 71 and the second cam body 73.

On the outer circumference of the first cam body 71, for example, two first cam recesses 76 engaged with the first cam protrusions 77 provided in the first cam flow-up 72 are provided. The 1st cam recessed part 76 (something called 1st A cam recessed part 81) of one 1st cam recessed part 76 of these 1st cam recessed part 76 contains a rotation angle of 0 degree (almost 0 degree. ), It is formed at a position that engages with the first cam protrusion 77. In addition, the rotation angle in this invention is a straight line and a 2nd frame body extended in the longitudinal direction of the 1st frame body 11 at the angle of the 2nd frame body 12 with respect to the 1st frame body 11, for example. The angle formed by the straight lines extending in the long direction of 12) is the angle at which 0 ° is taken when these straight lines are parallel. The first A cam concave portion 81 is completely engaged with the first cam convex portion 77 when the rotational angle is 0 °, for example, when the rotation angle is 0 °. It is preferable to form so that. In this manner, when the rotation angle is 0 °, the first cam protrusion 77 is not completely engaged with the first A cam recess 81, and the first cam protrusion 77 is engaged with the first cam during engagement. It is in the state located in the middle of the inclined surface (1st inclined surface 81a) of the cam recessed part 81. FIG. In addition, the first inclined plane 81a of the first A cam recess 81 is engaged with the first cam protrusion 77 from an angle of rotation of 19 degrees (including almost 19 degrees, hereinafter.). It is gently formed to begin with.

In addition, when the other 1st cam recessed part 76 (there is 1st cam cam recessed part 82) has a rotation angle, for example, 76 degree | times (including nearly 76 degree | times. It is formed in the position engaged with the 1st cam convex part 77. As shown in FIG. In addition, the 1B cam recessed part 82 is not limited to the rotation angle of 76 degrees, but can be set arbitrarily, For example, the rotation angle which engages with the 1st cam convex part 77 is less than 76 degrees or 76 degrees. It may be formed to exceed 90 degrees or 90 degrees, of course. Moreover, although two 1st cam recesses 76 were provided in the outer periphery of the 1st cam body 71, it is not limited to this, You may provide 3 or more.

In addition, on the outer circumference of the second cam body 73, three second cam recesses 78 engaged with the second cam protrusions 79 provided in the second cam flow-up 74 are provided, for example. have. The first 2nd cam recessed part 78 (something called 2nd A cam recessed part 83) of these 2nd cam recessed part 78 is the 2nd cam convex part 79 when the rotation angle is 0 degree. ) Is formed at the position to engage with. When the second cam recess portion 78 (sometimes called the second B cam recess portion 84) rotates in the individual direction, when the second shaft 4 rotates with respect to the hinge case 2, It is formed at a position far ahead of the second A cam recess 83 in the rotational direction, for example, 84 ° (including nearly 84 °. When the third cam recess portion 78 (sometimes referred to as the second C cam recess portion 85) is rotated in the individual direction, when the second shaft 4 is rotated with respect to the hinge case 2. It is formed at a position far ahead of the second A cam recessed portion 83 in the rotational direction, for example, 104 degrees (including 104 degrees. The 2C cam recessed part 85 is regulated, for example with the rotation angle range of the 2nd frame 12 with respect to the 1st frame 11 at 0-180 degrees (including nearly 180 degrees. It is the same below.). If present, the 2nd cam convex portion 83 is rotated forward than 104 °, for example, 114 ° (including nearly 114 °. It is preferable to form so that it may engage. In addition, the position of the 2nd B cam recessed part 84 and the 2nd C cam recessed part 85 is not specifically limited, You may provide in another position. Moreover, although three 2nd cam recessed parts 78 were provided in the outer periphery of the 2nd cam body 73, it is not limited to this, You may provide 2 or more 4 or more.

The first inclined surface 81a of the first A cam recessed portion 81 and the first inclined surface 83a (the inclined surface of the second B cam recessed portion 84 side) of the second A cam recessed portion 83 are, for example, When the force is applied so that the second frame body 12 rotates in the individual direction with respect to the first frame body 11 in the closed state (see FIGS. 2 and 5), the first frame body 11 (first shaft 3) ) And the first rotational torque generated between the hinge case 2 and the hinge case 2 is smaller than the second rotational torque generated between the second frame 12 (the second shaft 4) and the hinge case 2. For example, the first inclined surface 81a of the first A cam concave portion 81 is formed with a gentler inclination angle than the first inclined surface 83a of the second A cam concave portion 83. As a result, the second frame 12 rotates in the individual direction with respect to the first frame 11 at the same time as the hinge case 2 with the first shaft 3 as the axis. This rotation is made to stop when the rotation angle is 76 °, that is, when the first cam projection 77 engages with the first B cam recess 82. This state is an intermediate state (see FIGS. 3 and 7).

The first inclined surface 82a (the inclined surface on the side away from the first A cam concave portion 81) of the first B cam concave portion 82 and the first inclined surface 83a of the second A cam concave portion 83 are, for example. In the intermediate state, when the force is applied to rotate the second frame body 12 in the individual direction with respect to the first frame body 11, the first rotation torque is formed to be larger than the second rotation torque. In addition, the 1st inclined surface 82a of the 1st B cam recessed part 82, and the 1st inclined surface 84a of the 2nd B cam recessed part 84 (the inclined surface on the side away from the 2nd A cam recessed part 83) are an example. For example, the first cam protrusion 77 engages with the first B cam recess 82, and the second cam protrusion 79 engages with the second B cam recess 84 (first The first rotation torque is formed to be larger than the second rotation torque when a force is applied to rotate the second frame body 12 in the individuality direction with respect to the first frame body 11 in the individual state. . As a result, the second frame body 12 further rotates with respect to the first frame body 11 in the individual direction with respect to the second shaft 4. This rotation has a rotation angle of 160 ° (including nearly 160 °. The same as below). The second cam protrusion 79 and the second B cam recess 84 engage with each other to stop the rotation once the first personality state is achieved. (See FIGS. 4 and 9), the rotation angle is further 180 degrees (including nearly 180 degrees. The same.), That is, the second cam projection 79 is the second C cam recess 85 At the same time, the first cam projection 77 stops in a state in which the first cam projection 77 engages with the first B cam recess 82 (sometimes referred to as a second personality state) to become a second personality state (see FIG. 10). )

Further, the second inclined plane 82b (the inclined plane on the first A cam concave portion 81 side) of the first B cam concave portion 82 and the second inclined plane 85b of the second C cam concave portion 85 (the second B cam) The inclined surface of the concave portion 84 side is, for example, the second frame relative to the first frame body 11 in the second individual state in which the second frame body 12 is opened at a 180 ° rotation angle with respect to the first frame body 11. When a force is applied to rotate the frame 12 in the closing direction, the first rotational torque is formed to be larger than the second rotational torque, for example, the second inclined surface 85b of the second C cam recessed portion 85. The inclination angle is formed more gently than the 2nd inclined surface 82b of this 1B cam recessed part 82. As shown in FIG. Moreover, the 2nd inclined surface 82b of the 1st B cam recessed part 82, and the 2nd inclined surface 84b (the inclined surface of the 2nd A cam recessed part 83 side) of the 2nd B cam recessed part 84 are 1st personality. In a state where the force is applied to the second frame body 12 to rotate in the closed direction with respect to the first frame body 11, the first rotation torque is formed to be larger than the second rotation torque, for example, the second B The second inclined surface 84b of the cam concave portion 84 has a gentler inclination angle than the second inclined surface 82b of the first B cam concave portion 82. The second frame body 12 rotates with respect to the first frame body 11 in the individual direction with the second shaft 4 as an axis. Thereby, the 2nd frame 12 rotates with respect to the 1st frame 11 in the closing direction about the 2nd shaft 4 as an axis | shaft. This rotation has a rotation angle of 160 ° (including nearly 160 °. The following is the same). The second cam protrusions 79 and the second B cam recesses 84 are engaged, and the rotation stops once more, and then rotates further. The angle is 76 °, that is, the second cam projection 79 engages with the second A cam recess 83 to stop in the intermediate state.

In addition, the second inclined surface 82b of the first B cam recessed portion 82 and the second inclined surface 83b of the second A cam recessed portion 83 (the inclined surface on the side away from the second B cam recessed portion 84) are intermediate. The first torque is formed to be larger than the second torque when a force is applied to the second frame body 12 to rotate in the closing direction with respect to the first frame body 11 in the state. In this case, the second frame body 12 attempts to rotate in the closing direction with respect to the first frame body 11 with the second shaft 4 as the axis, and thus the second shaft 4 with the axis as the second The rotation control means 9 which restricts rotation of the frame 12 is provided. Thereby, the 2nd frame 12 rotates with respect to the 1st frame 11 in the closing direction simultaneously with the hinge case 2 about the 1st shaft 3 as an axis | shaft. The rotation is stopped at a rotational angle of 0 °, that is, in a closed state in which the first frame body 11 and the second frame body 12 are in close contact with each other. In addition, the first frame body 11 of the second frame body 12 is stopped. When the force is applied to rotate the second frame body 12 in the closing direction with respect to the first frame body 11 at the intermediate opening angle during closing operation, the first rotation torque becomes smaller than the second rotation torque. The second inclined surface 82b of the first B cam concave portion 82 and the second inclined surface 83b of the second A cam concave portion 83 may be formed. In this case, the rotation restricting means 9 is unnecessary. It may be.

The rotation control means 9 regulates the angle of rotation between the first shaft 3 and the second shaft 4, and, for example, as shown in Figs. 11 to 14, in particular, It consists of the 1st rotation control means 91 provided between the hinge case 2, and the 2nd rotation control means 92 provided between the 2nd shaft 4 and the hinge case 2. As shown in FIG.

The first rotation control means 91 is, for example, a first rotation control body 93 provided on the outer periphery of the first shaft 3 between the first bracket 35 and the hinge case 2 and the first rotation control body 91. Engage with the 1A rotation control convex portion 94 and the 1A rotation control convex portion 94 provided on the side of the hinge case 2 side of the rotation control body 93, and are installed on the hinge case 2 The 1B rotation control convex part 95 is comprised. The rotation angle of the first rotation control means 91 is controlled, for example, by rotating the hinge case 2 with respect to the first bracket 35 by the first cam protrusion 77 by the first cam cam recess 81. ) Is regulated to a rotational range of 76 ° ranging from the state in which it is engaged to the state) to the state in which the first B cam recess 82 is engaged.

The first rotation regulator 93 is formed almost in a ring shape. The first rotation regulator 93 is formed almost in a ring shape. The inner mold of the first rotating control body 93 is formed in a substantially small plate shape fitted in the state fitted to the outer circumference of the distal end portion of the first shaft 3, and the first shaft 3 (the first bracket 35). At the same time, the meeting is scheduled. The first rotation control convex portion 94 extending in the axial direction is provided at two opposite ends of the first rotation control body 93 facing each other on the side of the hinge case 2 side. The 1A rotation control convex part 94 is formed in substantially circular arc shape according to the 1st rotation control body 93. As shown in FIG. In the axial direction, two surfaces of the hinge case 2 facing the first rotation restricting body 93, that is, two adjacent portions of the hinge support hole 23 on the outer surface of the first hinge support piece 21, are located in the axial direction. The 1st B rotation control convex part 95 extended is provided, respectively. The 1B rotation control convex portion 95 is provided on the same circumference as the 1A rotation control convex portion 94.

The 1A rotation control convex portion 94 and the 1B rotation control convex portion 95 form the first B rotation control convex portion 95 when the first cam convex portion 77 engages with the first A cam recess portion 81. ) Is positioned near one end of the 1A rotation control convex portion 94 (sometimes referred to as the first end portion 94a) (see FIGS. 11 and 14 (a)) and the first cam convex portion. When the hinge case 2 is rotated in the individual direction with respect to the first bracket 35 (first shaft 3) while the 77 is engaged with the first A cam recess 81, the first B rotation restriction convex. When the section 95 falls from the first end portion 94a of the 1A rotation control convex portion 94 and rotates by 76 °, the first cam convex portion 77 engages with the second B cam recess portion 84 and at the same time. The 1B rotation control convex part 95 is formed in contact with the other end (sometimes called the 2nd end part 94b) of the 1A rotation control convex part 94, and the rotation is regulated (FIG. 12). And FIG. 14 (b) (c)). As a result, the rotation range of the hinge case 2 with respect to the first bracket 35 is in the state where the first cam protrusion 77 engages with the first A cam recess 81. It is regulated by the rotational range of 76 ° up to the state engaged in 82).

The second rotation control means 92 is, for example, a second rotation control body 96 provided on the outer circumference of the second shaft 4 between the second bracket 45 and the hinge case 2 and this second rotation control body 92. Engages with the 2 A rotation control convex part 97 and this 2 A rotation control convex part 97 provided in the surface of the hinge case 2 side of the rotation control body 96, and is installed in the hinge case 2 2B rotation control convex part 98 is comprised. For example, the rotation angle of the second rotation control means 92 is rotated of the hinge case 2 with respect to the second bracket 45 so that the second cam protrusion 79 makes the second A cam recess 83. ) Is regulated in the rotational range of 104 ° in the range from the state engaged in the step C) to the state engaged in the second C cam recess 85.

The second rotation regulator 96 is formed almost in a ring shape. The inner mold of the second rotational regulator 96 is formed in a substantially small plate shape fitted in the state of being fitted to the outer periphery of the distal end of the second shaft 4, and the second shaft 4 (second bracket 45). At the same time, the meeting is scheduled. The 2A rotation control convex part 97 extended in the axial direction is respectively provided in the two opposing locations of the 2nd rotation control body 96 at the side of the hinge case 2 side. The 2A rotation control convex part 97 is formed in substantially circular arc shape according to the 2nd rotation control body 96. As shown in FIG. In the axial direction, two places facing the surface of the hinge case 2 facing the second rotation control body 96, that is, the vicinity of the hinge support hole 24 on the outer surface of the second hinge support piece 22, are axially located. Increased 2B rotation control convex portions 98 are provided, respectively. The 2B rotation control convex portion 98 is provided on the same circumference as the 2A rotation control convex portion 97.

The 2B rotation control convex portion 98 and the 2A rotation control convex portion 97 form the second A rotation control convex portion 97 when the second cam convex portion 79 engages the second A cam recess portion 83. ) Abuts one end (sometimes referred to as the first end 98a) of the 2B rotating control convex portion 98, and the second bracket 45 (second shaft 4) with respect to the hinge case 2. Is rotated in the closing direction so as to be restricted (see Figs. 11, 12 and 14 (a) (b)). Further, the 2B rotation control convex portion 98 and the 2A rotation control convex portion 97 are attached to the hinge case 2 with the second cam convex portion 79 engaged with the second A cam concave portion 83. When the second bracket 45 (the second shaft 4) is rotated in the individual direction, the second A rotation restriction convex portion 97 falls from the first end 98a of the second rotation restriction convex portion 98. Rotates by 104 °, the second cam convex portion 79 engages with the second C cam concave portion 85, and the second A rotation convex portion 97 is the other end of the second B rotation convex portion 98. (It is called the 2nd end part 98b), and it is formed so that the rotation may be regulated (refer FIG. 14 (c)). As a result, the second rotation control means 92 sets the rotation range of the second bracket 45 (the second shaft 4) with respect to the hinge case 2 by the second cam projection 79 to the second A cam recess. It restricts to the rotation range of 104 degrees from the state engaged with the part 83 to the state engaged with the 2nd C cam recessed part 85. FIG. Accordingly, the rotation control means 9 restricts the rotation range of the hinge case 2 to 76 ° with respect to the first bracket 35, and at the same time, the second bracket 45 (second to the hinge case 2). The rotation range of the shaft 4 is regulated to 104 degrees, and the entire rotation range of the biaxial hinge device 1 is regulated to 180 degrees. That is, the rotation range of the second frame body 12 with respect to the first frame body 11 is regulated, for example, in the range of 0 to 180 degrees.

Further, the rotation control means (5) is any one of the first shaft 3 and the second shaft 4 during the rotation operation of which one of the shafts is the point. In addition, it is preferable to provide the slide motion control means 8 (indicated reference numerals in Figs. 6 to 8) for restricting the rotational motion with the other shaft as the point. The slide motion control means 8 may be configured using, for example, an end portion 72b of the first cam flow-up 72 and an end portion 74b of the second cam flow-up 74. That is, when the first cam convex portion 77 engages with the first cam concave portion 76 and the second cam convex portion 79 separates from the second cam concave portion 78, or When the first cam convex portion 77 disengages from the first cam concave portion 76 and the second cam convex portion 79 engages with the second cam concave portion 78, the first cam flow-up The lengths of the first cam flow-up 72 and the second cam flow-up 74 are set such that the end surfaces of the 72 and the second end portions 72b and 74b of the second cam flow-up 74 abut each other. 6 and FIG. 8). Thereby, while the 1st cam convex part 77 engages with the 1st cam concave part 76, the 2nd cam convex part 79 disengages from the 2nd cam concave part 78, and is 2nd. When the second bracket 45 is rotated with respect to the hinge case 2 with the shaft 4 as the axis, the first cam protrusion 77 is separated from the first cam recess 76 and the first bracket 35 is rotated. ), The first bracket 35 does not rotate relative to the hinge case 2. In addition, while the first cam convex portion 77 is separated from the first cam concave portion 76, the second cam convex portion 79 engages with the second cam concave portion 78, and the first bracket ( When the first bracket 35 is rotated about the hinge case 2 with the axis 35 as the axis, the second cam protrusion 79 is separated from the second cam recess 78 so as to move the second shaft 4. The second bracket 45 does not rotate about the hinge case 2 in the shaft.

Next, the operation of the biaxial hinge device 1 and the electronic device 10 according to the present invention will be described.

In the state where the electronic device 10 is not used, it is the closed state of the thing which the 1st frame body 11 and the 2nd frame body 12 folded into two superposed | polymerized mutually (refer FIG. 2). At this time, due to the elasticity of the compression spring 75a, the first cam flow-up 72 and the second cam flow-up 74 are pressed against the first cam body 71 and the second cam body 73, respectively. Since the first cam convex portion 77 and the first A cam concave portion 81 are engaged with each other, and the second cam convex portion 79 and the second A cam concave portion 83 are engaged with each other, The first mold body 11 and the second mold body 12 are held in a closed state in which they are almost completely polymerized with each other.

In the closed state, the first cam convex portion 77 and the first A cam concave portion 81 are engaged, but the first cam convex portion 77 and the first A cam concave portion 81 are completely engaged. It is a state where the tip portion of the first cam protrusion 77 is located in the middle of the first inclined surface 81a of the first A cam recess 81 (not nearly completely fitted) (including almost completely) (see FIG. 5). . For this reason, since the 1st frame body 11 is urged by the elasticity of the compression spring 75a so that it may superpose | polymerize with the 2nd frame body 12, the 1st frame body 11 and the 2nd frame body 12 will be in a closed state without squeaking. It is seen.

In the case of using this electronic device 10, for example, a force is exerted to rotate the second frame 12 in the individual direction while holding the first frame 11 by hand. Then, since the first rotation torque is smaller than the second rotation torque, the second frame body 12 rotates with respect to the first frame body 11 in the individual direction at the same time as the hinge case 2 with the first shaft 3 as the point. That is, the first camp-up 72 moves the inside of the hinge case 2 to the second cam-flow 74 side in response to the elasticity of the compression spring 75a, and thus the first camp-up 72 first. The cam convex portion 77 is separated from the first A cam concave portion 81 and slides the circumferential surface of the first cam body 71 (see FIG. 6). At this time, while the second cam convex portion 79 engages with the second A cam concave portion 83, the first cam convex portion 77 leaves the first A cam concave portion 81, The second cam projections 79 are separated from the second A cam recesses 83 by the opposing ends 72b and 74b of the first cam flow-up 72 and the second cam flow-up 74 abutting each other. Since the rotation of the second shaft 4 is restricted and the hinge case 2 is rotated about the shaft of the first shaft 3, the second frame body 12 is in an individual direction with respect to the first frame body 11. Only the rotating operation which rotates by is performed certainly.

When the rotational angle of the second frame body 12 is 76 ° with respect to the first frame body 11, the first cam flow-up 72 causes the second cam flow-up 74 to become elastic due to the elasticity of the compression spring 75a. Moving in the direction away from the side, the first cam convex portion 77 forcibly enters the first B cam concave portion 82 and engages the first shaft 3 with respect to the first frame body 11 on the second frame 11. The individual operation of the frame 12 is stopped to enter the intermediate individual state (see FIGS. 3 and 7). At this time, since the first cam convex portion 77 is forced into the first B cam concave portion 82, it is possible to easily grasp that a feeling of click occurs and the intermediate individual state becomes easy. In addition, in the intermediate personality state, the first rotation control convex portion 95 of the first rotation control means 91 abuts on the second end portion 94b of the first rotation control convex portion 94 so as to contact the first bracket 35. The rotation of the hinge case 2 in the individual direction with respect to the first shaft 3 is regulated (see Fig. 14 (b)).

If the second frame body 12 is forced to rotate in the individual direction in the intermediate individual state, the rotation of the hinge case 2 in the individual direction with respect to the first bracket 35 (first shaft 3) is restricted. As a result, the second frame body 12 rotates in the individual direction at the second shaft 4 point. That is, while the second cam flow-up 74 resists the elasticity of the compression spring 75a and moves inside the hinge case 2 on the side of the first cam flow-up 72, the second cam flow-up 74 ), The second cam convex portion 79 moves away from the second A cam concave portion 83 and slides the circumferential surface of the second cam body 73 (see FIG. 8).

When the rotational angle is 160 °, the second cam protrusion 74 moves in the direction away from the first cam flow-up 72 due to the elasticity of the compression spring 75a. Enters the 2B cam recessed part 84 forcibly, engages, and the rotation of the 2nd frame 12 with respect to the 1st frame 11 with respect to the 2nd shaft 4 is stopped, and it becomes a 1st personality state. (See FIGS. 4 and 9). At this time, since the second cam convex portion 79 forcibly enters the second B cam concave portion 84, it is possible to easily grasp that a feeling of click occurs and the first personality state is obtained.

Thereby, the operation part 13, such as a keyboard part provided in the upper surface of the 1st frame 11, is exposed operatively, and the display part 14 is exposed visually so that the display part 14 is exposed. It is possible to use the electronic device 10 in a horizontal state. At this time, the first cam convex portion 77 and the first B cam concave portion 82 are engaged with each other, and the second cam convex portion 79 and the second B cam concave portion 84 engage with each other. Since the elasticity of the compression spring 75a is maintained, the display portion 14 is held in the first individual state.

In addition, when a force is applied to the second frame body 12 to rotate in the individual direction in the first individual state, the second frame body 12 rotates to the individual direction at the point of the second shaft 4, and the rotation angle is 180 degrees. When the temperature reaches 0 °, the second rotation control convex portion 97 of the second rotation control means 92 contacts the second end 98b of the second rotation control convex portion 98, and the rotation thereof is stopped (Fig. 14 ( c)). At this time, the first cam flow-up 72 and the second cam flow-up 74 are pressed by the first cam body 71 and the second cam body 73 by the elasticity of the compression spring 75a. Since the second cam protrusion 79 and the second C cam recess 85 are engaged, and the first cam protrusion 77 and the first A cam recess 81 are engaged, the first frame ( 11) and the second frame 12 are held in the second individual state. Also in this second personality state, the operation unit 13 such as the keyboard unit provided on the upper surface of the first frame 11 is exposed to be operable, and the display unit 14 is exposed to the display unit. It is possible to use the electronic device 10 by making 14) the horizontal direction.

In the second individual state, although the second cam protrusion 79 and the second C cam recess 85 are engaged, the engagement is the second cam protrusion 79 and the second C cam recess 85. Is not a state of being completely fitted (including almost completely), and the tip portion of the second cam protrusion 79 is located in the middle of the second inclined surface 85b of the second C cam recess 85 (FIG. 10). Reference). For this reason, the elasticity of the compression spring 75a causes the second frame 12 to be opened, that is, the second A rotation control convex portion 97 contacts the other end of the second B rotation control convex portion 98. Since it is urged, the 1st frame body 11 and the 2nd frame body 12 are hold | maintained in a 2nd individual state without rattling.

As described above, when opening the electronic device 10 in the closed state, first, the second frame 12 and the first shaft 3 simultaneously with the hinge case 2 due to the torque difference between the first rotational torque and the second rotational torque. ) To the point, and when the rotation starts, the opposite ends 72b and 74b of the first cam flow-up 72 and the second cam flow-up 74 abut each other to rotate the second shaft 4. It is regulated, and since the 2nd frame 12 does not rotate the 2nd shaft 4 about an axis, it only makes the rotation about the 1st shaft 3 until an intermediate individual state. Next, in the intermediate individual state, the first shaft 3 is axially contacted by the contact between the first B rotation control convex portion 95 and the first A rotation control convex portion 94 of the first rotation control means 91. Rotation is regulated, and only the rotation with the second shaft 4 as a point is performed until the first individual state or the second individual state. Therefore, only the rotation with the first shaft 3 as a point is performed in the rotation angle range of 0 to 76 °, and only the rotation with the second shaft 4 as the point is performed at the rotation angle range of 76 to 180 °. Individual operation is performed by the rotation operation in the order of.

To return the second frame body 12 to its original position in the second individual state, that is, the closed state, for example, the second frame body 12 rotates in the closed direction while the first frame body 11 is pressed by hand. Force it to work. Then, the rotation torque is simultaneously generated in the first shaft 3 and the second shaft 4, but when the first cam projection 77 is separated from the first B cam recess 82, the rotation torque is higher than the required first rotation torque. When the second cam convex portion 79 is disengaged from the second C cam concave portion 85, since the required second rotation torque is smaller, the first rotation torque is larger than the second rotation torque. At the point 4), the second frame body 12 rotates with respect to the first frame body 11 in the closing direction. Once the rotation angle reaches 160 °, the second cam projection 79 is forced into the second B cam recess 84 from the second C cam recess 85, and stops. Due to the torque difference, it is possible for the second frame body 12 to rotate in the closing direction with respect to the first frame body 11 on the shaft. As a result, the sliding of both ends 72b and 74b of the first cam flow-up 72 and the second cam flow-up 74 is restricted, and as a result, the first cam projections 77 become the first A cam recesses. Since it is not detached from the part 81 (refer FIG. 8), the 2nd frame 12 rotates in the closing direction with respect to the 1st frame 11 only in the 2nd shaft 4 point.

Then, when the rotation angle reaches 76 °, the second cam convex portion 79 forcibly enters the second A cam concave portion 83 to be in an intermediate closed state (see FIGS. 3 and 7). At this time, a feeling of click occurs. Further, the 2A rotation control convex portion 97 abuts on the first end portion 98a of the 2B rotation control convex portion 98, and the second shaft 4 is axially hinged with respect to the hinge case 2. Rotation of the bracket 45 (second frame 12) in the closing direction is restricted (see Fig. 14 (b)). For this reason, in the intermediate closing state, a force is applied to the second frame body 12 to rotate in the closing direction, and the second bracket 45 (the second frame body) with respect to the hinge case 2 with the second shaft 4 as a point. Rotation in the closing direction of (12) is regulated, and the second frame body 12 rotates in the closing direction with respect to the first frame body 11 at the same time as the hinge case 2 of the first shaft 3 only at the point. . When the rotation angle reaches 0 °, the first cam protrusion 77 and the first A cam recess 81 engage with each other, and the second frame 12 and the first frame 11 adhere to each other to polymerize. It becomes a closed state and its rotation stops (refer FIG. 2 and FIG. 5).

As described above, when closing the electronic device 10 in the individual state, first, the second shaft 4 is rotated to a point by the torque difference between the first rotational torque and the second rotational torque. Both ends 72b and 74b of the cam flow-up 72 and the second cam flow-up 74 abut, and their sliding is regulated, and since the first shaft 3 is not rotated to a point, The rotation is performed with the two shafts 4 as the point. Next, in the intermediate closing state, only the first shaft 3 is rotated to a point by abutment between the 2A rotation control convex portion 97 and the second B rotation control convex portion 98 to reach a closed state. Therefore, the rotation is made only at the second shaft 4 as a point in the rotation angle range of 180 to 76 °, and the rotation is made only at the point of the first shaft 3 at the rotation angle range of 76 to 0 °. The closing operation is performed by the rotation operation in the order of.

Accordingly, the biaxial hinge device 1 and the electronic device 10 according to the present invention are made with respect to the first frame body 11 with only the first shaft 3 when the electronic device 10 in the closed state is opened. The frame 12 rotates simultaneously with the hinge case 2 to reach an intermediate personality state. In this intermediate personality state, the second frame body 12 is moved relative to the first frame body 11 with only the second shaft 4 as a point. When rotating and reaching the first personality state or the second personality state and at the same time closing the electronic device 10 in their personality state, the second frame 4 with respect to the first frame body 11 with only the first second shaft 4 as a point. The frame 12 rotates and reaches an intermediate closed state. In this intermediate closed state, the second frame 12 rotates simultaneously with the hinge case 2 with respect to the first frame 11 with only the first shaft 3 as a point. The rotation is performed in a predetermined order. As described in detail above, a simplified structure capable of achieving cost down with fewer parts is possible, and then the opening and closing operations of the first frame body 11 and the second frame body 12 can be performed in a predetermined opening and closing sequence. It is possible to improve the operability. In addition, by holding the compression spring 75a with a different elasticity, the holding force held in the closed state, the first individual state, and the second individual state can be adjusted.

Furthermore, in the embodiment of the present invention, when the second frame body 12 is further opened in the intermediate individual state with respect to the first frame body 11, the rotation of the hinge case 2 in the direction of individuality with respect to the first shaft 3 is achieved. Is regulated by the second rotation control means 92, and when the second frame 12 is closed at an intermediate closing angle with respect to the first frame 11, the rotation of the hinge case 2 in the closing direction is removed. Although regulated by the first rotation control means 91, the present invention is not limited thereto. For example, only the torque difference between the first rotation torque and the second rotation torque is used, and the first shaft rotation means by the slide motion control means 8 is used. The rotation of the hinge case 2 in the individual direction may be regulated with respect to 3).

In addition, in the embodiment of the present invention, when the electronic device 10 in the closed state is opened, the second frame body 12 is hinged with respect to the first frame body 11 only with the first shaft 3 as a point. And at the same time to reach the intermediate personality state, in which the second frame body 12 rotates with respect to the first frame body 11 only at the point of the second shaft 4 so that the first personality state or the second When reaching the individual state and at the same time closing the electronic device 10 in the individual state, the second frame body 12 rotates with respect to the first frame body 11 only to the second shaft 4 to reach the intermediate closed state. In this intermediate closing state, the second frame body 12 rotates with respect to the first frame body 11 only at the point in order to perform the rotation operation in a predetermined rotational order in which the hinge body 2 simultaneously rotates. However, it is not limited to this rotation order, You may open and close in another rotation order. For example, when opening the electronic device 10 in the closed state, the second frame body 12 rotates with respect to the first frame body 11 only at the point of the second shaft 4 to reach the intermediate personality state. In the intermediate personality state, the second frame body 12 rotates simultaneously with the hinge case 2 with respect to the first frame body 11 only at the point of the first shaft 3 to reach the personality state, and at the same time, the electronic device in the individuality state. When closing (10), the second frame 12 rotates simultaneously with the hinge case 2 with respect to the first frame 11 only to the first shaft 3 to reach an intermediate closed state. In the closed state, the second frame body 12 may be rotated with respect to the first frame body 11 only at the point of the second shaft 4.

The present invention, as described in detail above, the first shaft and the second shaft fixed to the end of the first frame and the second frame fixed to the end of the hinge and the first frame body rotatably simultaneously installed in the same direction opposite to the hinge frame body And rotation control means for determining the order in which the first shaft and the second shaft rotate when the first frame and the second frame are opened and closed relatively in the polymerized state between the first shaft and the second shaft. The rotation control means comprises a cam mechanism acting on the first shaft and the second shaft, and rotation regulation means for regulating the rotation angles of the first shaft and the second shaft. It is simple in structure and has a small number of parts and enables cost reduction, which is particularly suitable for PDAs, notebook PCs, and the like.

1 is an exploded perspective view showing an example of an electronic apparatus provided with a biaxial hinge device according to the present invention.

2 is a perspective view showing a closed state in an example of an electronic device provided with a biaxial hinge device according to the present invention.

3 is a perspective view showing an intermediate individual state in an example of an electronic device provided with a biaxial hinge device according to the present invention.

4 is a perspective view showing a first individual state in an example of an electronic device provided with a biaxial hinge device according to the present invention.

5 is a configuration diagram showing a closed state in one example of the rotation control means of the biaxial hinge apparatus according to the present invention.

6 is a configuration diagram showing a state between the closed state and the intermediate individual state in one example of the rotation control means of the biaxial hinge apparatus according to the present invention.

7 is a configuration diagram showing an intermediate individual state in one example of the rotation control means of the biaxial hinge apparatus according to the present invention.

8 is a configuration diagram showing a state between an intermediate individual state and a first individual state in one example of the rotation control means of the biaxial hinge apparatus according to the present invention.

9 is a configuration diagram showing a first individual state in one example of the rotation control means of the biaxial hinge apparatus according to the present invention.

10 is a configuration diagram showing a second modified state in an example of the rotation control means of the two-axis hinge device according to the present invention.

11 is a perspective view showing a closed state in one example of a biaxial hinge device according to the present invention.

It is a perspective view which shows the intermediate individual state in an example of the biaxial hinge apparatus which concerns on this invention.

It is an exploded perspective view which shows an example of the biaxial hinge apparatus which concerns on this invention.

14 is a cross-sectional view showing an example of the rotational control means of the two-axis hinge device according to the present invention, (a) shows a closed state, (b) shows an intermediate individual state, and (c) shows a second individuality. It is a figure which shows the state.

Claims (13)

The hinge case and the hinge case are installed so as to be rotatable simultaneously in the same direction while facing each other with respect to the hinge frame and the second frame body having the display portion mounted on the lower surface thereof. A first shaft fixed to an end of the first frame body and a second shaft fixed to an end of the second frame body, wherein the first frame body and the second frame body are disposed between the first shaft and the second shaft body. When relatively opening and closing, rotation control means is provided for determining an order in which the first shaft and the second shaft rotate, and the rotation control means includes a first rotation torque and the first rotation torque generated in the shaft rotation of the first shaft. A two-axis hinge device, characterized in that the use of the torque difference between the second rotational torque generated in the shaft rotation of the two shafts. The method of claim 1, The rotation control means comprises a cam mechanism for generating the first rotation torque and the second rotation torque, and a rotation control means for regulating rotation angles of the first shaft and the second shaft. . The method of claim 2, The cam mechanism is in the hinge case, such as a first cam body and a second cam body mounted in the hinge case so as to face the first shaft and the second shaft, respectively, to the first cam body and the second cam body. A two-axis hinge comprising a first cam flow-up and a second cam-flow-up which are in contact with each other and slidably control each rotation, and elastic means installed between the first cam-flow up and the second cam-up Device. The method of claim 3, The first cam follow-up provided with a plurality of recesses on the outer circumference of the first cam body and the second cam body of the cam mechanism, and the recesses, the first shaft and the second cams in the second cam follow-up. A two-axis hinge device, characterized in that each convex portion is inserted into the rotation angle of the shaft. The method of claim 2, And the rotation control means is provided between the first shaft and the second shaft and the hinge case. The method of claim 2, The rotation control means comprises a first rotation control means provided between the first shaft and the hinge case and the second rotation control means provided between the second shaft and the hinge case. 2-axis hinge. The method of claim 6, The first rotation control means includes a first rotation control body having a first A rotation control convex portion mounted to the first shaft, and a first B rotation control installed in a hinge case at the same time as engaging the first rotation control convex portion. The second rotation control means comprises a second rotation control body having a 2A rotation control convex portion mounted to the second shaft, and a second B rotation control installed in the hinge case at the same time as engaging the second rotation control convex portion. 2-axis hinge device characterized in that. The method of claim 2, The rotation control means includes a first cam flow-up and a second cam of the cam mechanism during the rotational operation in which the second frame body has either shaft between the first shaft and the second shaft with respect to the first frame body. And a slide motion control means for regulating the rotational motion in which either the first shaft or the second shaft is the point of the other shaft by regulating the slide motion of the flow-up. . The method of claim 1, The first frame and the second frame body are electrically connected to the cable inserted through the cable insertion hole even though cable insertion holes are provided in the first shaft and the second shaft, respectively. 2-axis hinge. The method of claim 1, And a cover covering the hinge case simultaneously with the cable is detachably attached to the hinge case. The method of claim 1, The rotation control means is opened by first rotating the first shaft to a point simultaneously with the second frame body when opening the first frame body and the second frame body in a closed polymerized state, and the hinge case. After the rotation is regulated by the first rotation control means of the rotation control means, when the second frame body rotates simultaneously with the second shaft to open and rotates to a predetermined rotation angle, the second rotation control means The two-axis hinge device, characterized in that the rotation is regulated by. The method of claim 1, When the rotation control means closes the first frame body and the second frame body from the individual state at the use angle or more, firstly, the second frame body is rotated and closed simultaneously with the second shaft, and then the second rotation control means. And the first shaft is closed to the point at the same time as the hinge frame after the rotation thereof is regulated by the two-axis hinge device. The first frame body provided with the operation part like a keyboard in the upper surface, and the 2nd frame body provided with the display part in the lower surface, and a pair of the biaxial hinge apparatus of Claim 1 are used, Electronic device characterized in that the frame is connected to open and close.

Images