TW202016683A - Two-shaft hinge device and electronic apparatus using the same - Google Patents

Abstract

The invention provides a two-shaft hinge device and an electronic apparatus using the two-shaft hinge device. A first hinge shaft and a second hinge shaft are rotatably connected to each other using a connecting member at a predetermined interval. A first support member supports a first housing and a second support member supports the second housing. A first attachment member is attached to the first hinge shaft. The former comprises a first attachment member attached to the first hinge shaft and a first slide bracket attached to the first attachment member so as to be slidable in the radial direction of the first hinge shaft, and the latter is provided on the second hinge shaft. The second mounting member and the second mounting bracket attached to the second mounting member so as to be slidable in the radial direction of the second hinge shaft. The first housing is attached to the first sliding bracket. The problem was solved by attaching the second housing to the slide bracket.

Description

Biaxial hinge device and electronic machine using the dual axis hinge device

The invention relates to a biaxial hinge device suitable for an electronic device composed of a flexible display panel mounted on an organic light emitting diode structure and straddling both surfaces of a first casing and a second casing, and using the dual shaft An electronic device of a hinge device, wherein the electronic device is, for example, a mobile phone, an electronic manual, a PDA, a small notebook (NETbook), and a notebook computer.

In recent years, for example, a mobile phone that has been mounted on a flexible display panel with an organic light-emitting diode structure that spans both surfaces of the first and second housings has been developed and marketed. As a hinge device that can open and close the first case and the second case of such a mobile phone, a biaxial hinge device using two hinge shafts is a conventional document, Japanese Patent Application Publication No. 2017-215012 The described invention is known.

The conventional biaxial hinge device is configured to maintain a certain radius of curvature when closing the first and second housings, so that the flexible display panel does not bend or malfunction, and the first housing and When the second casing is opened to the maximum angle, it must be configured so that the rear portions of the first casing and the second casing do not hit or interfere with each other, so that the distance between the shafts of the biaxial hinge can be adjusted.

Due to the above-mentioned conventional two-axis hinge device, a mechanism for adjusting the distance between the two shafts is provided between the two hinge shafts, which has problems of complicated structure and high manufacturing cost.

The present invention is to solve the above problems, and its subject is to provide a biaxial hinge device that can achieve the technical requirements described below with a simpler structure: a first housing and a second housing that are equipped with the above-mentioned flexible display panel The hinge device connected openly and closed is configured to maintain a certain radius of curvature when closing the first and second housings, so that the flexible display panel does not bend or malfunction, and the first housing When the second casing is opened to the maximum angle, it must be configured so that the corners of the rear portions of the first casing and the second casing do not hit or interfere.

In order to solve the above-mentioned problems, the present invention is a biaxial hinge device that spans the two surfaces of a first casing and a second casing and is equipped with an electronic device composed of a flexible display panel, which includes: A first supporting member is composed of a first mounting member and a first sliding bracket, the first sliding bracket is mounted to be slidable relative to the first mounting member and is mounted with a first housing; a second supporting member is formed by A second mounting member and a second sliding bracket, the second sliding bracket is mounted to be slidable relative to the second mounting member and is mounted with a second housing; a first hinge shaft and a second hinge shaft, the first The hinge shaft has a first screw portion and is mounted on the first mounting member, and the second hinge shaft has a second screw portion and is mounted on the second mounting member; a plurality of connecting members are rotatably connected to the first at a predetermined interval The hinge shaft and the second hinge shaft; a synchronous rotation mechanism, which is arranged to cross the first hinge shaft and the second hinge shaft and is slidable in the axial direction, which is provided with a first guide convex portion and a second guide A driving force transmitting member of the convex portion, the first guiding convex portion and the second guiding convex portion respectively engage with a first screw groove of the first screw portion and a second screw groove of the second screw portion, The rotation of any one of the first hinge shaft and the second hinge shaft is transmitted to the other, so that the first mounting member and the second mounting member are opened and closed synchronously; and a first sliding mechanism and a second sliding mechanism The opening and closing movements of the first mounting member and the second mounting member which are operated by the rotation of the hinge shaft and the second hinge shaft cause the radius of the first and second sliding brackets toward the first and second hinge shafts Swipe in the direction.

Next, in the present invention, the driving force transmission member of the synchronous rotation mechanism includes: a base plate portion; a pair of first pillar portions and a second pillar portion, which are vertically arranged at a predetermined interval on one side of the base plate portion, and Left and right direction; an insertion hole through which the first hinge shaft and the second hinge shaft are inserted, and the first hinge shaft and the second hinge shaft are respectively coaxial in common and are provided at the upper ends of each first pillar portion and each second pillar portion ; And a first guide convex portion and a second guide convex portion, corresponding to the first pillar portion and the second pillar portion is provided on the side of the first pillar portion and the second pillar portion provided with the base portion In the opposite direction, they are embedded in the first screw part and the second screw part respectively.

Next, in the present invention, the first sliding mechanism is composed of a first axial sliding member and a radial sliding guide. The first axial sliding member moves toward the first hinge shaft as the first hinge shaft rotates. Axial sliding, the radial sliding guide is provided on the first sliding bracket, and slides in the radial direction of the first hinge shaft with the sliding action of the sliding member in the first axial direction, and the second sliding mechanism is guided by a second axial direction The sliding member and a radial sliding guide are formed. The sliding member in the second axial direction slides in the axial direction of the second hinge shaft as the second hinge shaft rotates, and the radial sliding guide is provided in the second sliding The bracket slides in the radial direction of the second hinge axis with the sliding action of the sliding member in the second axis direction.

Next, in the present invention, the biaxial hinge device is provided with a first friction torque generating mechanism and a second friction torque generating mechanism. The first friction torque generating mechanism and the second friction torque generating mechanism are formed by fastening the first hinge from the radial direction The shaft and the second hinge shaft are composed of a plurality of friction plates.

Then in the present invention, it further includes a first suction mechanism and a second suction mechanism, wherein the first suction mechanism and the second suction mechanism are provided on the first sliding bracket and the second sliding bracket and the first mounting member and the second mounting member In between, as the opening and closing movements of the first casing and the second casing play a suction function from a predetermined opening and closing angle.

Next, in the present invention, the first suction mechanism is composed of a pair of wavy first fixed cam portions provided on both sides of the first mounting member and contacting each first fixed cam portion and provided to the first sliding bracket A pair of first cam followers slidingly pushed on the side, the second suction mechanism is composed of a pair of wavy second fixed cam portions provided on both inner sides of the second mounting member and contacting each second fixed The cam portion is formed by a pair of second cam followers that are slid and pushed toward the second slide bracket side, thereby exerting a suction function from a predetermined opening angle of the first mounting member and the second mounting member.

The present invention is an electronic device using the biaxial hinge device as described above.

When the first casing and the second casing are opened and closed as described in the present invention, the first casing and the second casing are moved toward the first hinge by the first sliding bracket and the second sliding bracket The shaft and the second hinge shaft slide in the radial direction, so the first housing and the second housing slide relative to the first mounting member and the second mounting member in the radial direction of the first hinge shaft and the second hinge shaft. Corresponding to the change in curvature when the flexible display panel is folded, a gap can be formed between the rear ends of the first casing and the second casing when closed, and a U-shaped shape can be formed to prevent the flexible display from being folded The board is bent or damaged.

When the structure is as described in the present invention, the first hinge shaft and the second hinge shaft can be simultaneously rotated in the reverse direction by the simple structure of the driving force transmission member.

When the structure is as described in the present invention, not only the structure of the first sliding mechanism and the second sliding mechanism can be very simple, as the first and second housings are opened and closed, the first sliding bracket and the second sliding bracket Relative to the first axis direction sliding member and the second axis direction sliding member, the first housing and the second housing are slidable in the radial direction of the first hinge axis and the second hinge axis, the first axis direction sliding member and the second The axial sliding member slides in the axial direction relative to the first hinge axis and the second hinge axis.

When the first hinge shaft and the second hinge shaft are rotated, the friction torque is generated when the first hinge shaft and the second hinge shaft are rotated as described in the present invention. The second housing can be freely stopped and held at any opening and closing angle.

When the opening and closing operations of the first and second housings are configured as described in the present invention, the first and second housings are pushed toward the opening and closing directions from a predetermined opening and closing angle, even if The first housing and the second housing that are released also automatically open or close and can maintain this state, so operability can be improved.

According to the present invention, in addition to the above effects, when the first sliding bracket slides relative to the first mounting member and the second sliding bracket slides relative to the second mounting member, the first sliding bracket is provided at the first position The cam follower slides relative to the first fixed cam portion provided on the first mounting member and the second cam follower provided on the second sliding bracket relative to the second fixed cam portion provided on the second mounting member, and The first casing and the second casing can be automatically opened and closed from a predetermined opening and closing angle, and this closed and opened state is stably maintained.

The following uses a mobile phone as an example to illustrate the dual-axis hinge device of the present invention and an electronic device using the dual-axis hinge device. The dual-axis hinge device of the present invention is not only used in mobile phones, as described above, it can be widely used in electronic manuals, PDAs, and small notebooks ( NETbook), notebook computers, and other electronic devices composed of a first case and a second case on which a flexible display is mounted on the surface can be opened and closed to each other.

1 to 3 are schematic diagrams of a mobile phone using the biaxial hinge device of the present invention. In addition, the side where the first case 2 and the second case 3 are opened in the figure is the front part, and the side connected by the biaxial hinge devices 6 and 7 is the rear part. Moreover, the left-right direction viewed from the front side is the side portion, and the up-down direction is the upper portion and the bottom portion.

According to the drawings, the mobile phone 1 of the present invention is composed of the following components: a first housing 2 and a second housing 3; a flexible display panel 5, for example, made of an organic light-emitting diode, spanning these ranks The two upper surfaces of the first casing 2 and the second casing 3 are installed via the flexible protective plate 4; and the biaxial hinge devices 6, 7 connect the rear ends of the first casing 2 and the second casing 3 unit. In particular, as shown in FIG. 3, the two-axis hinge devices 6, 7 can open and close the first housing 2 and the second housing 3 on the lower side of the protective plate 4 and a pair is provided on the left and right sides because the structure is the same In the following description, only one of the left biaxial hinge device 6 shown in FIG. 3 will be described, and a part of the description of the right biaxial hinge device 7 will be omitted.

In particular, as shown in FIGS. 1 to 3, a protective cover is provided on the side of each rear end of the first housing 2 and the second housing 3 that can be opened and closed by the biaxial hinge devices 6, 7 8, together with the rear part of the biaxial hinge device 6, 7 covers this part; and a pair of auxiliary protective covers 9, 9, covering both sides of the protective cover 8 in the longitudinal direction and the first housing 2 and the second housing 3 Between the rear ends. Both ends of the protective cover 8 and the auxiliary protective covers 9 and 9 are bent so that the insides of the first housing 2 and the second housing 3 are not seen from the left and right sides.

FIG. 3 shows a state in which the flexible display panel 5 and the protective plate 4 are removed, and the biaxial hinge is seen from the surface side of each open rear end side of the first housing 2 and the second housing 3. A part of the devices 6 and 7 constitutes a first slide bracket 12 that constitutes the first support member 10 and is mounted on the first housing 2 and a second slide bracket 13 that constitutes the second support member 11 and is mounted on the second housing 3. Further, as shown in the drawings, symbols 14, 14... Are mounting screws for mounting the first sliding bracket 12 and the second sliding bracket 13 to the first housing 2 and the second housing 3. Further, the symbols 15, 15... are covers that cover the parts of the mounting screws 14, 14....

Next, the structure of the left-side biaxial hinge device 6 among the biaxial hinge devices 6 and 7 will be described based on the drawings. The biaxial hinge device 6 is shown in detail after FIG. 4. In the following description, the side where the first support member 10 and the second support member 11 are opened is the front, and the first hinge shaft 21 and the second hinge shaft 23 will be described later. One side of the link is the rear. In addition, the left-right direction viewed from the front side is the side, and the up-down direction is the upper portion and the bottom portion.

According to the drawings, especially as shown in FIGS. 6 to 8 and FIG. 22, the left-side biaxial hinge device 6 is composed of the following members: a first supporting member 10, which is installed by the first mounting member 16 and relative to the first mounting member 16 is slidable and is composed of a first sliding bracket 12 on which the first housing 2 is mounted; a second support member 11 is composed of a second mounting member 17 and mounted so as to be slidable relative to the second mounting member 17 and is mounted with a second shell The second sliding bracket 13 of the body 3 is composed of a first hinge shaft 21, as shown in FIG. 16(a), having a first screw portion 20 provided with a first screw groove 20a at a slightly central position, and A pair of first fixing members 24, 24 at the end is mounted with a first mounting member 16; a second hinge shaft 23, as shown in FIG. 16(b), has a second screw groove 22a The second screw part 22, the second screw groove 22a is provided to be opposite to the twisting direction of the first screw part 20, and the second mounting member 17 is mounted via a pair of second fixing members 25, 25 mounted at both ends; the first The connecting member 26A and the second connecting member 26B are rotatably connected to the first hinge shaft 21 and the second hinge shaft 23 at a predetermined interval so as not to move away from each other; the synchronous rotation mechanism 30 is installed across the first The hinge shaft 21 and the second hinge shaft 23 are slidable in the axial direction of the first hinge shaft 21 and the second hinge shaft 23, which is driven by the driving force having the first guide convex portion 27 and the second guide convex portion 28 The transmission member 29 is configured such that the first guide convex portion 27 and the second guide convex portion 28 are engaged with the first screw groove 20a of the first screw portion 20 and the second screw groove 22a of the second screw portion 22, respectively. The rotation of any one of the first hinge shaft 21 and the second hinge shaft 23 is transmitted to the other, so that the first mounting member 16 and the second mounting member 17 are opened and closed synchronously; and the first sliding mechanism 41 and the second sliding mechanism 42, especially As shown in FIG. 10, they are respectively engaged with the driving force transmitting member 29, and a pair of first axial sliding member 31 and second axial sliding member 32 and first radial sliding guides 12j, 12j and second radius The directional slide guides 13j and 13j are composed of a pair of first axial direction sliding members 31 and second axial direction sliding members 32 that are arranged to move to the first hinge in accordance with the rotation of the first hinge shaft 21 and the second hinge shaft 23 The shaft 21 and the second hinge shaft 23 are slidable in each axis direction, and the first radial sliding guides 12j, 12j and the second radial sliding guides 13j, 13j are provided on the first sliding bracket 12 and the second sliding bracket 13 to be slidably engaged with the first guide oblique long holes 31a, 31a and the second guide oblique provided in the first axial sliding member 31 and the second axial sliding member 32 at predetermined intervals, respectively Long holes 32a, 32a.

Next, the constituent members of the biaxial hinge device 6 will be described in further detail. As shown in FIGS. 16( a) and (b ), the structures of the first hinge shaft 21 and the second hinge shaft 23 are the same, except that the twists of the first screw portion 20 and the second screw portion 22 are opposite to each other. The first hinge shaft 21 includes: a first circular shaft portion 21a provided on one side with a first screw portion 20 having a first screw groove 20a; a second circular shaft portion 21b provided on the other side; A mounting shaft portion 21c and a second mounting shaft portion 21d, connected to the first circular shaft portion 21a and the second circular shaft portion 21b, and having a rectangular cross section; and the first circumferential groove 21e and the second circumferential groove 21f, A pair of E-shaped rings 21g and 21g provided for connecting the first mounting shaft portion 21c and the second mounting shaft portion 21d are installed.

The second hinge shaft 23 includes: a first circular shaft portion 23a provided on one side with a second screw portion 22 having a second screw groove 22a; a second circular shaft portion 23b provided on the other side; A mounting shaft portion 23c and a second mounting shaft portion 23d, connected to the first circular shaft portion 23a and the second circular shaft portion 23b, and having a rectangular cross section; and the first circumferential groove 23e and the second circumferential groove 23f, A pair of E-shaped rings 23g and 23g provided for connecting the first mounting shaft portion 23c and the second mounting shaft portion 23d are installed.

The first hinge shaft 21 and the second hinge shaft 23 are rotatably connected to each other at a predetermined interval by a pair of first coupling members 26A and second coupling members 26B. That is, the first coupling member 26A and the second coupling member 26B are composed of the following members: bases 26a, 26f; support portions 26b, 26g, 26c, 26h erected from both ends of the bases 26a, 26f; The shaft receiving holes 26d, 26i, 26e, and 26j on the upper end side of the support portions 26b, 26g, 26c, and 26h are rotatably inserted through the first circular shaft portion 21a and the second circular shaft portion 21b of the first hinge shaft 21 The shaft receiving holes 26d and 26i, the first circular shaft portion 23a and the second circular shaft portion 23b of the second hinge shaft 23 are rotatably inserted into the through shaft receiving holes 26e and 26j. Therefore, with the first coupling member 26A and the second coupling member 26B, the first hinge shaft 21 and the second hinge shaft 23 are configured so that the distance between the shafts does not change during the turning operation. Furthermore, the first hinge shaft 21 and the second hinge shaft 23 are restricted by the E-rings 21g, 21g, 23g, and 23g from moving in the axial direction relative to the first coupling member 26A and the second coupling member 26B.

Next, the structures of the first mounting member 16 and the second mounting member 17 constituting the first supporting member 10 and the second supporting member 11 are the same. In particular, as shown in FIG. 13, the first mounting member 16 and the second mounting member 17 are composed of Components: flat plate portions 16a, 17a; side plate portions 16b, 16b, 17b, 17b provided on both sides of the flat plate portions 16a, 17a; and guide rails bent from the side plate portions 16b, 16b, 17b, 17b to the outside 16c, 16c, 17c, 17c, and a pair of mounting holes 16e, 16e, 16e, 16e, 17e, 17e, 17e, 17e, which are installed on the flat plate portions 16a, 17a at a predetermined interval The lower pair of guide long holes 16d, 16d, 17d, 17d and the pair of first fixing members 24, 24 and second fixing members 25 provided on the outside of the guide long holes 16d, 16d, 17d, 17d, 25, and in particular, as shown in FIG. 13, wavy first fixed cam portions 16f, 16f and second fixed cam portions 17f, 17f are provided inside the side plate portions 16b, 16b, 17b, 17b.

Each of the first mounting member 16 and the second mounting member 17 is mounted to the first hinge shaft 21 and the second hinge shaft 23 via the first fixing members 24, 24 and the second fixing members 25, 25. That is, the fixing holes 24a, 24a, 25a, 25a provided in the first fixing members 24, 24 and the second fixing members 25, 25 and having a substantially rectangular cross section are inserted and fixed to the first hinge shaft 21 and the second hinge shaft 23 The first mounting shaft portions 21c and 23c and the second mounting shaft portions 21d and 23d are rectangular in cross section, respectively, through the mounting holes 24b and 24b passing through the first fixing members 24 and 24 and the second fixing members 25 and 25 , 25b, 25b mounting screws 24c, 24c, 25c, 25c through the mounting holes 16e, 16e, 16e, 16e, 17e, 17e, 17e, 17e provided in the first mounting member 16 and the second mounting member 17 and fixed two In this way, the first mounting member 16 and the second mounting member 17 are configured to rotate together with the first hinge lever 21 and the second hinge lever 23.

The structures of the first sliding bracket 12 and the second sliding bracket 13 are the same as the first mounting member 16 and the second mounting member 17, especially as shown in FIGS. 4-8 and 14, the first sliding bracket 12 and the second sliding bracket 13 is composed of the following members: stepped flat plate portions 12c, 13c, which are composed of wall thickness portions 12a, 13a and thin wall portions 12b, 13b with different thicknesses on the surface side; a pair of both side portions 12d, 12d, 13d, 13d are provided on both sides of the flat plate portions 12c, 13c; a pair of guide groove portions 12e, 12e, 13e, 13e are similarly provided on the inner sides of the both side portions 12d, 12d, 13d, 13d; a pair of mounting plates The parts 12f, 12f, 13f, 13f are similarly provided on the outside of the both sides 12d, 12d, 13d, 13d and facing outward, and have mounting holes 12n, 12n for mounting the first housing 2 and the second housing 3, 13n, 13n; the locking portions 12g, 13g are provided on the upper edges of the thick portions 12a, 13a; the mounting holes 12h, 13h are provided below the locking portions 12g, 13g; a pair of fixing pieces 12i, 12i, 13i, 13i are provided on both sides of the mounting holes 12h, 13h; and a pair of first radial sliding guides 12j, 12j and second radial sliding guides 13j, 13j are provided on the fixing pieces 12i, 12i, The lower portions of 13i and 13i are formed obliquely in the oblique direction at the thin portions 12b and 13b of the flat plate portions 12c and 13c. The guide pieces 12k and 13k are provided at the part of each of the thin portions 12b and 13b, and the mounting holes 12l and 13l are provided at the front ends of the guide pieces 12k and 13k.

Further, semicircular locking recesses 12m, 12m, 13m, 13m are provided on the edges of the guide grooves 12e, 12e, 13e, 13e, and in particular, as shown in FIGS. 6-8, 10-12, and 20 As shown, the guide grooves 12e, 12e, 13e, 13e are made of a material with good sliding properties, and are provided with first grooves 37e, 37e and second grooves 37f, 37f with a cross-section The first sliding promotion members 37a, 37a and the second sliding promotion members 37b, 37b of the shape lock the protrusions 37c, 37c, 37d, 37d to the locking provided in the guide grooves 12e, 12e, 13e, 13e The recesses 12m, 12m, 13m, 13m (shown in FIG. 14). Moreover, the guide pieces 12k and 13k provided in the thin portions 12b and 13b of the first sliding bracket 12 and the second sliding bracket 13 are respectively provided in the first sliding bracket 12 and the second sliding bracket as shown in FIG. The opposite side of 13.

As described above, the first supporting member 10 and the second supporting member 11 holding the first housing 2 and the second housing 3 are composed of the following members: the first mounting member 16 and the second mounting member 17; and the first sliding bracket 12 and the second sliding bracket 13 are mounted so as to be slidable relative to the first mounting member 16 and the second mounting member 17. In particular, as shown in FIGS. 6 to 8 and FIG. 13, the first mounting member 16 and the second mounting member 17 are provided with rail portions 16c, 16c, 17c, and 17c on both sides thereof, especially as shown in FIGS. 6 to 8, Each of the rail portions 16c, 16c, 17c, and 17c is configured to be engaged with the first groove portions 37e, 37e and the second groove portions 37f, 37f of the first sliding promotion members 37a, 37a and the second sliding promotion members 37b, 37b. A sliding promotion member 37a, 37a and second sliding promotion member 37b, 37b are installed in the guide groove portions 12e, 12e, 13e, 13e provided on both sides of the first sliding bracket 12 and the second sliding bracket 13, and the first The slide bracket 12 and the second slide bracket 13 are respectively slidable in the radial direction of the first hinge shaft 21 and the second hinge shaft 23 relative to the first mounting member 16 and the second mounting member 17. Since the first casing 2 and the second casing 3 are mounted on the mounting plate portions 12f, 12f, 13f, and 13f provided on both sides of the first sliding bracket 12 and the second sliding bracket 13, respectively, the first casing 2 and the second casing 3 The housing 3 is opened and closed together with the first sliding bracket 12 and the second sliding bracket 13 together with the first mounting member 16 and the second mounting member 17, as the first mounting member 16 and the second mounting member 17 are opened and closed And by the first sliding mechanism 41 and the second sliding mechanism 42 described later, the first housing 2 and the second housing 3 move toward the first hinge shaft 21 and the second hinge relative to the first mounting member 16 and the second mounting member 17 The shaft 23 slides in the radial direction.

Next, the synchronous rotation mechanism 30 will be described in further detail. In particular, as shown in FIGS. 10-12, the synchronous rotation mechanism 30 is composed of the following components: a first hinge shaft 21 and a second hinge shaft 23, each having a first screw portion 20 and a second screw portion 22 at each central portion; and The driving force transmission member 29 is provided across the first hinge shaft 21 and the second hinge shaft 23.

The driving force transmission member 29 is composed of a base plate portion 29a; first pillar portions 29d, 29d and second pillar portions 29e, 29e, which are spaced at predetermined intervals at both ends in the front-rear direction of one side portion of the base plate portion 29a Two uprights and four in total are provided upright, and first shaft insertion holes 29b, 29b and second shaft insertion holes 29c, 29c are respectively provided at the upper end; and the first guide convex portion 27 and the second guide convex The portion 28 protrudes from the other end of the base plate portion 29a toward the first screw portion 20 and the second screw portion 22 in the horizontal direction, and is engaged with the first hinge shaft 21 and the second hinge shaft 23 The first screw groove 20a of the one screw portion 20 and the second screw portion 22a of the second screw portion 22, and the respective first circular shaft portions 21a and 23a of the first hinge shaft 21 and the second hinge shaft 23 are rotatable and slidable The first shaft insertion holes 29b and 29b and the second shaft insertion holes 29c and 29c provided in the first pillar portions 29d and 29d and the second pillar portions 29e and 29e are respectively inserted through the ground.

Next, when either of the first hinge shaft 21 and the second hinge shaft 23 rotates in the synchronous rotation mechanism 30, the first guide protrusion 27 and the second guide protrusion 28 are fitted into the driving force transmission member 29 The first screw portion 20 and the second screw portion 22, the other first hinge shaft 21 or the second hinge shaft 23 simultaneously rotates in the opposite direction, and at the same time the driving force transmission member 29 moves toward the first hinge shaft 21 and the second hinge shaft 23 slide in each axis direction.

Moreover, since the first screw portion 20 and the second screw portion 22 are respectively twisted in the reverse direction, the first hinge shaft 21 and the second hinge shaft 23 are rotated in the reverse direction, and the first mounting member 16 and the second mounting member 17 are forwarded Direction of rotation.

The mechanism for sliding the first sliding bracket 12 and the second sliding bracket 13 in the radial direction of the first hinge shaft 21 and the second hinge shaft 23 together with the rotation of the first mounting member 16 and the second mounting member 17 is a sliding mechanism . The sliding mechanism is composed of a first sliding mechanism 41 on the first sliding bracket 12 side and a second sliding mechanism 42 on the second sliding bracket 13 side.

The first sliding mechanism 41 is composed of the following members: a first axial direction sliding member 31 is provided between the first hinge shaft 21 and the first mounting member 16 to be slidable together with the driving force transmitting member 29 of the synchronous rotation mechanism 30; A pair of first guide oblique long holes 31a, 31a are provided on the face of the sliding member 31 in the first axis direction; and the first radial sliding guides 12j, 12j (refer to FIGS. 10 to 12 and 19 in particular). It is slidably engaged with the first guide oblique long holes 31a, 31a, and is provided on one side of the first sliding bracket 12. The first axial direction sliding member 31 inserts the engaging portion 31c having the shaft insertion portion 31b between the first pillar portions 29d and 29d of the driving force transmitting member 29, and the shaft insertion portion 31b has a semicircular cross-section and is engaged and inserted in The first circular shaft portion 21a of the first hinge shaft 21 slidably engages the guide pins 31e, 31e with a pair of guide slots 16d, 16d provided in the first mounting member 16, and the guide pins 31e, 31e passes through a pair of mounting holes 31d and 31d which are installed at a lower portion of the first axial direction sliding member 31 at a predetermined interval.

Further, the first guide member 38 having a substantially T-shape is slidably engaged on the base provided in the mounting hole 12l at the front end of the guide piece 12k extending from one side of the first sliding bracket 12 The first guide long groove 45b of the first engaging portion 45a at one end of the member 45 assists the sliding operation of the first sliding bracket 12.

The second sliding mechanism 42 is composed of the following members: the second axial direction sliding member 32 is provided between the second hinge shaft 23 and the second mounting member 17 together with the driving force transmitting member 29 of the synchronous rotation mechanism 30; A pair of second guide oblique long holes 32a and 32a are provided on the surface of the sliding member 32 in the second axis direction; and second radial slide guides 13j and 13j are slidably engaged in the second guide oblique length The holes 32a and 32a are provided on one side of the second sliding bracket 13. The second axial direction sliding member 32 inserts the engaging portion 32c having the shaft insertion portion 32b between the second pillar portions 29e and 29e of the driving force transmitting member 29, and the shaft insertion portion 32b has a semicircular cross section and is inserted and inserted in The first circular shaft portion 23a of the second hinge shaft 23 slidably engages the guide pins 32e and 32e with a pair of guide slots 17d and 17d provided in the second mounting member 17, and the guide pins 32e and 32e passes through a pair of mounting holes 32d and 32d that are installed at a predetermined interval in the lower portion of the sliding member 32 in the second axis direction.

Further, the second guide member 39 having a substantially T-shape is slidably engaged with the second guide member 39 installed in the mounting hole 13l at the front end of the guide piece 13k extending from one side of the second slide bracket 13 The second guide long groove 45d of the second engaging portion 45c at one end of the member 45 assists the sliding operation of the second sliding bracket 13.

Moreover, the base member 45 is provided with a first engaging portion 45a and a second engaging portion 45c at both ends, and the first engaging portion 45a and the second engaging portion 45c penetrate the first connecting member in the left-right direction The base portions 26a and 26f of the 26A and the second coupling member 26B, the base plate portion 29a of the driving force transmission member 29, and the base portions 53a, 53a... of the friction plates 53, 53..., and the first engaging portion 45a and the second The second engaging portion 45c is provided with a first guide long groove 45b and a second guide long groove 45d. Although not fully shown, the base member 45 is configured to be attached to the guide piece 12k of the first slide bracket 12 A guide member 38 is engaged in the first guide long groove 45b, and the second guide member 39 mounted on the guide piece 13k of the second sliding bracket 13 is engaged in the second guide long groove 45d.

Next, the first friction torque generating mechanism 51 on the side of the first hinge shaft 21 and the second friction torque generating mechanism 52 on the side of the second hinge shaft 23 will be described. The first friction torque generating mechanism 51 and the second friction torque generating mechanism 52 share a plurality of friction plates 53, 53, 53... That overlap each other. All sides of the friction plate 53 have a slightly U-shaped shape and the same structure with elasticity, and are separated on the first circular shaft portions 21a, 23a side and the second circular shaft portion 21b of the first hinge shaft 21 and the second hinge shaft 23 , 23b side is formed by superimposing a plurality of pieces, and its structure is especially a piece as shown in FIG. 22, which is composed of a base portion 53a; raised portions 53b, 53c erected at both ends of the base portion 53a; and provided at the front ends of the raised portions 53b, 53c In addition, the friction holes 53d and 53e with cut grooves are formed. By passing the first circular shaft portions 21a, 23a and the second circular shaft portions 21b, 23b of the first hinge shaft 21 and the second hinge shaft 23 through the plurality of friction holes 53d, 53e of the appended groove, in the first When the one hinge shaft 21 and the second hinge shaft 23 rotate, frictional forces are generated between the outer circumferential portions of the first circular shaft portions 21a and 23a and the second circular shaft portions 21b and 23b. In particular, the first friction torque generating mechanism 51 and the second friction torque generating mechanism 52 are not limited to this embodiment, and friction torque generating mechanisms of various other conventional structures may be used.

Next, the attraction mechanism will be described. The suction mechanism operates according to the opening and closing operations of the first mounting member 16 and the second mounting member 17 when the first sliding bracket 12 and the second sliding bracket 13 slide, and is attracted by the first suction on the side of the first housing 2 The mechanism 61 and the second suction mechanism 62 on the second casing 3 side are configured.

The first suction mechanism 61 and the second suction mechanism 62, as shown in FIG. 13 in particular, are composed of: a pair of wavy first fixed cam portions 16f, 16f and second fixed cam portions 17f, 17f provided at The inner side of each rail portion 16c, 16c and 17c, 17c provided with the first mounting member 16 and the second mounting member 17; and a pair of first cam followers 63, 63 and second cam followers 69, 69, It is provided to slide and push toward the first sliding bracket 12 and the second sliding bracket 13 side, and each of the first cam followers 63, 63 and the second cam followers 69, 69 are mounted on the first sliding bracket 12 and the second sliding bracket 13 The first installation member 65 and the second installation member 70 attached thereto.

That is, the first cam followers 63, 63, especially as shown in FIG. 21, are provided with a pair of insertion holes 63a, 63a, 63a, 63a in the longitudinal direction of the upper and lower portions thereof, and as shown in FIGS. 6 to 12 and 21 As shown, a pair of first guide pins 64a, 64b and 66a, 66b each extending from the base portion 65a of the first mounting member 65 at predetermined intervals and extending in the left-right direction are inserted through these insertion holes 63a, 63a, 63a , 63a, and at the same time, the first elastic members 67a, 67b and the second elastic members 68a, 68b, which are composed of compression coil springs wound around each pair of first guide pins 64a, 64b, 66a, 66b, are elastically arranged at the first Between the base portions 65a of the mounting member 65, the first cam followers 63 and 63 are configured to be crimped to the wave-shaped first fixed cam portions 16f and 16f. The wavy first fixed cam portions 16f, 16f are particularly formed by the convex portions 16g, 16g and the first concave portions 16h, 16h and the second concave portions 16i, 16i arranged on both sides of the convex portions 16g, 16g, as shown in FIG. When the first cam followers 63 and 63 are configured to fall from the convex portions 16g and 16g of the first fixed cam portions 16f and 16f into the first concave portions 16h and 16h and the second concave portions 16i and 16i, Attract features.

Moreover, the second cam followers 69, 69, in particular as shown in FIG. 21, are provided with a pair of insertion holes 69a, 69a, 69a, 69a in the longitudinal direction of the upper and lower portions thereof, as shown in FIGS. 6 to 12 and 21 As shown, a pair of second guide pins 71a, 71b and 74a, 74b each extending from the base 70a of the second mounting member 70 at predetermined intervals and extending in the left-right direction penetrates through these insertion holes 69a, 69a, 69a , 69a, and at the same time, the first elastic members 72a, 72b and the second elastic members 73a, 73b composed of the compression coil springs wound around each pair of second guide pins 71a, 71b, 74a, 74b are elastically arranged in the second Between the base portions 70a of the mounting member 70, the second cam followers 69 and 69 are configured to be crimped to the wave-shaped second fixed cam portions 17f and 17f. In addition, in FIGS. 6 to 8, symbols 65c and 70c are mounting screws used to mount the first mounting member 65 and the second mounting member 70 to the first sliding bracket 12 and the second sliding bracket 13. Symbols 13h and 12h and symbols 65b and 70b are mounting holes for mounting screws 65c and 70c. The wave-shaped second fixed cam portions 17f and 17f of the second mounting member 70 are composed of convex portions 17g and 17g and the first concave portions 17h, 17h and The two concave portions 17i, 17i are formed, and the second cam followers 69, 69 are configured to fall from the convex portions 17g, 17g of the second fixed cam portions 17f, 17f to the first concave portions 17h, 17h, and the second concave portion At 17i and 17i, it has an attractive function.

Next, the operation of the biaxial hinge device 6 of the present invention will be described. In addition, the dual-axis hinge device 7 also performs the same operation, so repeated description is omitted. According to the drawings, as shown in FIGS. 1(b), 5 and 9(b), and 12, in the closed state of the first housing 2 and the second housing 3, the first sliding mechanism 41 And the second sliding mechanism 42, the first sliding bracket 12 and the second sliding bracket 13 mounted on the first housing 2 and the second housing 3 are positioned above the first mounting member 16 and the second mounting member 17 In the sliding position, as shown in FIGS. 5, 9(b), and 12(a), since the base member 45 is in the lowered state, the variation of the radius of curvature of the flexible display panel 5 can be absorbed, and at the same time, Since the flexible display panel 5 is formed in a U-shape and is folded, there is no need to worry about the flexible display panel 5 being bent or damaged. Moreover, in this closed state, the first followers 63, 63 and the second followers 69, 69 of the first suction mechanism 61 and the second suction mechanism 62 fall into the first fixed cam portions 16f, 16f and The first concave portions 16h, 16h, 17h, 17h of the second fixed cams 17f, 17f are kept closed. Further, in the closed state of the first housing 2 and the second housing 3, the first radial sliding guides 12j, 12j and the second radial sliding guides 13j, 13j are located in the first axis direction The starting ends of the first guide oblique long holes 31a and 31a and the second guide oblique long holes 32a and 32a of the sliding member 31 and the second axial sliding member 32.

When the first housing 2 and the second housing 3 are relatively opened by hand from the closed state of the first housing 2 and the second housing 3, the first hinge shaft 21 and the second hinge shaft 23 are transmitted via the driving force The member 29 starts to rotate in synchronization, and the driving force transmission member 29 moves from the state shown in FIG. 11(b) to the left side of the first hinge shaft 21 and the second hinge shaft 23 in the axial direction, and is engaged with the driving force transmission member 29. The first axial sliding member 31 and the second axial sliding mechanism 32 slide leftward together. In this way, the first radial sliding guides 12j, 12j and the second radial sliding guides 13j, 13j are engaged with the first guides of the first axial sliding member 31 and the second axial sliding structure 32 The first sliding bracket 12 and the second sliding bracket 13 of the oblique long holes 31a, 31a and the second oblique long holes 32a, 32a slide together in the radial direction close to the sides of the first hinge shaft 21 and the second hinge shaft 23, As a result, in the fully opened state, as shown in FIG. 3, the rear ends of the first casing 2 and the second casing 3 are opened without a gap.

In a state where the first housing 2 and the second housing 3 are opened 180 degrees, as shown in FIG. 3, the first support member 10 and the second support member 11 are horizontal to each other, and the first mounting member 16 and the second mounting The rear ends of the members 17 are in contact with each other without a gap, and the first radial slide guides 12j, 12j and the second radial slide guides 13j, 13j of the first slide bracket 12 and the second slide bracket 13 As shown in FIG. 10(b), the first guide oblique long holes 31a, 31a and the second guide oblong long holes 32a, 32a provided in the first axial sliding member 31 and the second axial sliding structure 32 are terminated The end, by this, will not continue to open. In this fully opened state, the user can operate and appreciate the large screen of the flexible display panel 5 provided across the two surfaces of the first housing 2 and the second housing 3.

Moreover, in the fully opened state of the first casing 2 and the second casing 3, the first cam followers 63, 63 and the second cam follower 69 of the first suction mechanism 61 and the second suction mechanism 62, The convex portions 63b, 63b and the convex portions 69b, 69b of 69 fall into the second concave portions 16i, 16i, 17i, 17i of the first fixed cam portions 16f, 16f and the second fixed cam portions 17f, 17f, and the first housing 2 and the second housing 3 are pushed in the fully opened direction.

After viewing the open flexible display panel 5 to close, the user pushes the first housing 2 and the second housing 3 in the open state toward the closing direction, the first hinge shaft 21 and the second hinge shaft 23 The driving force transmitting member 29 is relatively rotated in the opposite direction, thereby closing the door, and at the same time, the flexible display panel 5 is also bent and closed at the central portion thereof. At this time, the first frictional torque generating mechanism 51 and the second frictional torque generating mechanism 52 make the first axial direction sliding member 31 and the second axial direction sliding mechanism 32 move in the axial direction of the first hinge shaft 21 and the second hinge shaft 23 By sliding, the first sliding bracket 12 and the second sliding bracket 13 slide in the radial direction away from the first hinge shaft 21 and the second hinge shaft 23, so that the bending of the flexible display panel 5 can be absorbed The curvature changes, while the first mounting member 16 and the second mounting member 17 rotate with the first hinge shaft 21 and the second hinge shaft 23 as fulcrums, and are guided to the first sliding bracket 12 and the first by the base member 45 The guide pieces 12k and 13k of the two sliding brackets 13 descend, especially as shown in FIG. 9(b), the rear end portions of the first mounting member 16 and the second mounting member 17 are away from each other, and the flexible display panel 5 is folded The U-shaped side surface prevents bending and damage when the flexible display panel 5 is folded.

When the first mounting member 16 and the second mounting member 17 are opened and closed, the first hinge shaft 21 and the second hinge shaft 23 rotate together through a plurality of first friction torque generating mechanism 51 and second friction torque generating mechanism 52 The friction plates 53, 53... Generate frictional moments, so the first housing 2 and the second housing 3 are opened and closed at a free stop.

Further, the opened first and second housings 2 and 3 are opened from predetermined by the first suction mechanism 61 and the second suction mechanism 62 acting on the first sliding bracket 12 and the second sliding bracket 13 The angle and the predetermined closing angle are pushed toward the opening direction and the closing direction, so the opening or closing action will be automatically performed from the predetermined opening and closing angle, and the first shell 2 and the second when fully opened and fully closed The housing 3 can be kept pushed in the opening or closing direction.

Due to the above-mentioned structure, the present invention is suitable for a biaxial hinge device of an electronic device mounted on a flexible display panel across the two surfaces of the first and second housings that can be opened and closed and using the biaxial hinge Electronic device

1: mobile phone 2: the first shell 3: second shell 4: Protection board 5: Flexible display panel 6, 7: Biaxial hinge device 8: protective cover 9: auxiliary protective cover 10: The first support member 11: Second support member 12: The first sliding bracket 13: Second sliding bracket 12a, 13a: wall thickness 12b, 13b: thin wall 12c, 13c: Flatbed 12d, 13d: both sides 12e, 13e: guide groove 12f, 13f: mounting plate 12g, 13g: locking part 12h, 13h: mounting holes 12i, 13i: fixed piece 12j: sliding guide in the first radius direction 13j: sliding guide in the second radial direction 12k, 13k: guide piece 12l, 13l: mounting holes 12m, 13m: locking recess 12n, 13n: mounting holes 14: mounting screws 15: Cover slip 16: The first mounting member 17: Second mounting member 16a, 17a: flat section 16b, 17b: side panel 16c, 17c: rail part 16d, 17d: guide long hole 16e, 17e: mounting holes 16f: First fixed cam 16g: convex part 16h: the first recess 16i: second recess 17f: Second fixed cam 17g: convex part 17h: the first recess 17i: second recess 20: the first screw part 20a: the first screw groove 21: The first hinge axis 22: Second screw part 22a: second screw groove 23: Second hinge shaft 21a, 23a: first circular shaft 21b, 23b: Second round shaft 21c, 23c: The first mounting shaft 21d, 23d: Second mounting shaft 21e, 23e: first week slot 21f, 23f: second week slot 21g, 23g: E-ring 24: The first fixing member 25: second fixing member 24a, 25a: fixing hole 24b, 25b: mounting holes 24c, 25c: mounting screws 26A: The first connecting member 26B: Second connecting member 26a, 26f: base 26b, 26g, 26c, 26h: support 26d, 26i, 26e, 26j: shaft receiving hole 27: The first guide protrusion 28: Second guide protrusion 29: Driving force transmission member 29a: Base part 29b: First axis jack 29c: Second axis jack 29d: First Pillar Department 29e: Second Pillar Department 30: Synchronous rotating mechanism 31: Sliding member in the first axis direction 31a: First guide oblique long hole 31b: Shaft insertion part 31c: Engagement Department 31d: mounting hole 31e: guide pin 32: Sliding member in the second axis direction 32a: Second guide oblique long hole 32b: shaft insertion part 32c: Engagement 32d: mounting hole 32e: guide pin 37a: First sliding promotion member 37b: Second sliding promotion member 37c, 37d: locking protrusion 37e: the first groove 37f: second groove 38: The first guide member 39: Second guide member 41: The first sliding mechanism 42: Second sliding mechanism 45: Base member 45a: the first engaging part 45b: the first guide slot 45c: Second engagement part 45d: second guide slot 51: The first friction torque generating mechanism 52: Second friction torque generating mechanism 53: Friction plate 53a: base 53b, 53c: Riser 53d, 53e: friction holes 61: The first attraction agency 62: Second attraction agency 63: First cam follower 63a: through hole 63b: convex part 64a, 64b, 66a, 66b: first guide pin 65: The first installation component 65a: base 65b: mounting hole 65c: mounting screw 67a, 67b: the first elastic member 68a, 68b: second elastic member 69: Second cam follower 69a: through hole 69b: convex 70: Second installation component 70a: base 70b: mounting hole 70c: mounting screw 71a, 71b, 74a, 74b: second guide pin 72a, 72b: the first elastic member 73a, 73b: second elastic member

FIG. 1 is a mobile phone with a flexible display panel using a biaxial hinge of the present invention, (a) is a perspective view of the first case and the second case opened, (b) is the closed first case and A perspective view of the second casing. FIG. 2 is a diagram showing the overall structure of the mobile phone shown in FIG. 1, (a) is an exploded perspective view viewed from the upper side, and (b) is an exploded perspective view viewed from the lower side. FIG. 3 is a partially exploded perspective view showing the flexible display panel and the protective plate removed from the mobile phone shown in FIG. 1 and viewed from above. 4 is a perspective view showing the biaxial hinge device of the present invention, (a) is a perspective view of the first case and the second case opened from the upper side, and (b) is a perspective view seen from the lower side. 5 is a perspective view showing the biaxial hinge device of the present invention, (a) is a perspective view of the closed state of the first support member and the second support member viewed from the upper side, and (b) is a perspective view seen from the lower side with a changing angle. Fig. 6 is an exploded perspective view showing the entire biaxial hinge device of the present invention. 7 is an exploded perspective view showing the first hinge axis side of the biaxial hinge device of the present invention. 8 is an exploded perspective view showing the second hinge shaft side of the biaxial hinge device of the present invention. 9 is a diagram showing the state of using the biaxial hinge device of the present invention to connect the first case and the second case of the mobile phone, (a) is a partial cross-sectional side view of the first case and the second case viewed open, (b ) Is a partial cross-sectional side view of the closed first housing and the second housing. FIG. 10 is a cross-sectional view taken along line A-A of (a) a side view and (b) a (a) showing a biaxial hinge device of the present invention. 11 is a side view showing the biaxial hinge device of the present invention, (a) is a side view of a state where the first housing and the second housing are opened to 90 degrees, and (b) is a cross-sectional view taken along line B-B of (a). FIG. 12 is a side view showing the biaxial hinge device of the present invention, (a) is a closed state of the first support member and the second support member, and (b) is a cross-sectional view taken along line C-C of (a). 13 is a perspective view of the first and second mounting members viewed from the back. 14 is a perspective view of the first and second sliding brackets viewed from the front. 15 is a perspective view of the first and second fixing members. 16 is a perspective view showing a hinge axis, (a) is a perspective view of a first hinge axis, and (b) is a perspective view of a second hinge axis. FIG. 17 is a perspective view of the first coupling member and the second coupling member. 18 is a perspective view of a driving force transmission member. 19 is a perspective view of the first and second axial sliding members. FIG. 20 is a perspective view of the first and second sliding promotion members. 21 is a perspective view of the first and second cam followers. Fig. 22 shows a friction plate, (a) is a front view, and (b) is a plan view. 23 is a perspective view of the base member.

6: Double-axis hinge device

12: The first sliding bracket

13: Second sliding bracket

12e, 13e: guide groove

12f, 13f: mounting plate

12g, 13g: locking part

13h: mounting hole

12j: sliding guide in the first radius direction

12k, 13k: guide piece

16: The first mounting member

17: Second mounting member

16b, 17b: side panel

16c: Rail section

16d, 17d: guide long hole

16e, 17e: mounting holes

17f: Second fixed cam

20: the first screw part

22: Second screw part

21: The first hinge axis

23: Second hinge shaft

21b, 23b: Second round shaft

21c, 23c: The first mounting shaft

21d, 23d: Second mounting shaft

21e, 23e: first week slot

21f, 23f: second week slot

21g, 23g: E-ring

24: The first fixing member

25: second fixing member

24a, 25a: fixing hole

24b, 25b: mounting holes

24c, 25c: mounting screws

26A: The first connecting member

26B: Second connecting member

26a, 26f: base

26b, 26g, 26c, 26h: support

26d, 26i, 26e, 26j: shaft receiving hole

27: The first guide protrusion

28: Second guide protrusion

29: Driving force transmission member

29a: Base part

29b: First axis jack

29c: Second axis jack

29d: First Pillar Department

29e: Second Pillar Department

30: Synchronous rotating mechanism

31: Sliding member in the first axis direction

31a: First guide oblique long hole

31b: Shaft insertion part

31c: Engagement Department

31d: mounting hole

31e: guide pin

32: Sliding member in the second axis direction

32a: Second guide oblique long hole

32b: shaft insertion part

32c: Engagement

32d: mounting hole

32e: guide pin

37a: First sliding promotion member

37b: Second sliding promotion member

38: The first guide member

39: Second guide member

45: Base member

45a: the first engaging part

45b: the first guide slot

45c: Second engagement part

45d: second guide slot

53: Friction plate

53a: base

53b, 53c: Riser

53d, 53e: friction holes

61: The first attraction agency

62: Second attraction agency

63: First cam follower

64a, 64b, 66a, 66b: first guide pin

65: The first installation component

65a: base

67a, 67b: the first elastic member

68a, 68b: second elastic member

69: Second cam follower

70: Second installation component

70c: mounting screw

71a, 71b, 74a, 74b: second guide pin

72a, 72b: the first elastic member

73a, 73b: second elastic member

Claims (7)

A biaxial hinge device that spans the two surfaces of a first casing and a second casing and is equipped with an electronic device composed of a flexible display panel, which includes: A first supporting member, which is composed of a first mounting member and a first sliding bracket, the first sliding bracket is mounted slidably relative to the first mounting member and the first housing is mounted; A second supporting member, which is composed of a second mounting member and a second sliding bracket, the second sliding bracket is mounted slidably relative to the second mounting member and the second housing is mounted; A first hinge shaft and a second hinge shaft, the first hinge shaft has a first screw portion and is mounted on the first mounting member, and the second hinge shaft has a second screw portion and is mounted on the second mounting member; A plurality of connecting members that are rotatably connected to the first hinge shaft and the second hinge shaft at predetermined intervals; A synchronous rotation mechanism is arranged to cross the first hinge axis and the second hinge axis and is slidable in the axis direction, which is driven by a driving force having a first guide convex portion and a second guide convex portion The transmission member is composed of the first guide convex portion and the second guide convex portion respectively engaged with a first screw groove of the first screw portion and a second screw groove of the second screw portion, The rotation of any one of the first hinge shaft and the second hinge shaft is transmitted to the other, so that the first mounting member and the second mounting member are opened and closed synchronously; and A first sliding mechanism and a second sliding mechanism, with the opening and closing movements of the first mounting member and the second mounting member operating according to the rotation of the first hinge shaft and the second hinge shaft, make the The first sliding bracket and the second sliding bracket slide in the radial direction of the first hinge shaft and the second hinge shaft. The dual-axis hinge device as described in item 1 of the patent application scope, wherein the driving force transmission member of the synchronous rotation mechanism includes: A base plate department; A pair of first pillar portions and second pillar portions are provided at a predetermined interval and upright on one side of the base plate in the up-down direction and the left-right direction; An insertion hole through which the first hinge shaft and the second hinge shaft are inserted, and the first hinge shaft and the second hinge shaft are respectively coaxial in axis and provided on the first pillar portions and the second pillar portions The upper end of; A first guide convex portion and a second guide convex portion corresponding to the first pillar portion and the second pillar portion are provided on the first pillar portion and the second pillar portion provided with the base plate portion One side is in the opposite direction, and is embedded in the first screw part and the second screw part, respectively. The biaxial hinge device as described in item 1 of the patent application scope, wherein the first sliding mechanism is composed of a first axial sliding member and a radial sliding guide, and the first axial sliding member follows the The rotating action of the first hinge shaft slides in the axial direction of the first hinge axis, the radial sliding guide is provided on the first sliding bracket, and moves in the direction of sliding along with the sliding action of the sliding member in the first axis direction The first hinge shaft slides in the radial direction. The second sliding mechanism is composed of a second axial sliding member and a radial sliding guide. The second axial sliding member follows the rotation of the second hinge shaft While sliding in the axial direction of the second hinge axis, the radial sliding guide is provided in the second sliding bracket, and moves in the radial direction of the second hinge axis with the sliding action of the sliding member in the second axial direction slide. The biaxial hinge device as described in item 1 of the patent application scope, wherein the biaxial hinge device is provided with a first friction torque generating mechanism and a second friction torque generating mechanism, the first friction torque generating mechanism and the second The friction torque generating mechanism is composed of a plurality of friction plates that fasten the first hinge shaft and the second hinge shaft in the radial direction. The biaxial hinge device as described in item 1 of the patent application scope further includes a first suction mechanism and a second suction mechanism, wherein the first suction mechanism and the second suction mechanism are provided on the first sliding bracket and the first Between the two sliding brackets, the first mounting member and the second mounting member, as the opening and closing movements of the first casing and the second casing play a suction function from a predetermined opening and closing angle. The biaxial hinge device as described in item 5 of the patent application range, wherein the first attraction mechanism is composed of a pair of wavy first fixed cam portions provided on the inside of both sides of the first mounting member and contacting each The first fixed cam portion is formed by a pair of first cam followers slidingly pushed toward the first sliding bracket side, and the second suction mechanism is provided on the inner side of both sides of the second mounting member A pair of wavy second fixed cam portions and a pair of second cam followers that contact each second fixed cam portion and are provided to slide and push toward the second sliding bracket side, whereby the first mounting The predetermined opening and closing angles of the member and the second mounting member serve as a suction function. An electronic machine using the biaxial hinge device as described in any one of the patent application scopes 1 to 6.

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