Improved torsion module structure of hinge device

Abstract

The utility model relates to an improved torsion module structure of a hinge device, which is characterized in that two pivoting parts are arranged on a fixed bracket, and each pivoting part respectively penetrates through a shaft; a swing arm assembly is pivoted on each shaft, each swing arm assembly is composed of a main swing arm and an auxiliary swing arm which are adjacent and parallel in the axial direction, local parts of the main swing arm and the auxiliary swing arm make contact with the two opposite surface sides of the pivot joint part in the axial direction, and a gap is formed when the pivot joint part is clamped between the main swing arm and the auxiliary swing arm; the elastic force of at least one elastic piece acts on at least one of the main swing arm and the auxiliary swing arm towards the pivoting part, so that the main swing arm and the auxiliary swing arm are relatively elastically clamped on two opposite surface sides of the pivoting part, and tight friction force is generated between each swing arm component and the fixed bracket; and the torsion effect of full positioning can be kept at any relative pivoting bending position.

Description

Technical Field

[0001] The utility model relates to an improved structure of a torque module of a hinge device, and in particular to a torque module structure which can form a tight clamping friction effect between a swing arm assembly and a fixed bracket, so that sufficient torque can be obtained at any bending angle to provide positioning requirements. Background Art

[0002] like Figure 1 As shown, it can be known that the hinge mechanism of the conventional electronic device applied to the flexible screen at least includes: a fixed bracket 1, a swing arm 20, an elastic member 5 and a cam seat 400 and other parts; wherein the fixed bracket 1 is provided with two pivoting parts 11, and the two pivoting parts 11 respectively penetrate a shaft 14; the two swing arm members 20 are respectively provided with a pivoted part 201, and each pivoted part 201 is provided with a groove 202 that can be fitted on the pivoting part 11, and the two shafts 14 respectively penetrate the pivoted part 201 and the pivoting part 11, so that the swing arm member 20 can be pivoted on the fixed bracket 1; the elastic member 5 can drive the two cam seats 400 to respectively abut against the two sides of the swing arm member 20, and the cam seat 400 and the swing arm member 20 are respectively provided with corresponding cams, and the two swing arm members 20 can be positioned at multiple specific opening and closing angles (for example: 0 degree, 90 degrees or 180 degrees) through the fixed bracket 1 by the relative elastic engagement of the corresponding cams.

[0003] However, since the width of the groove 202 of the swing arm member 20 is fixed, the elastic force applied to the swing arm member 20 by the elastic member 5 via the two cam seats 400 cannot act between the pivoted portion 201 and the pivoted portion 11 to increase the friction force. Therefore, the two swing arm members 20 cannot provide sufficient torque (or friction force) at other angles to achieve a precise positioning with the fixed bracket 1, thereby making it impossible for the flexible screen to be unfolded and positioned at any angle, resulting in application limitations and inconveniences.

[0004] In the utility model case CN 220581489U, a hub and an electronic device using the hub are disclosed, which mainly comprises two virtual axis brackets pivotally connected to a first base; two real axis brackets pivotally connected to a second base; a co-moving member is provided between the first base and the second base; a co-moving bracket is provided between the virtual axis bracket and the real axis bracket; a real axis is provided on the outer sides of the two second bases, passing through the second bases, the co-moving member and the first base; and a compression spring is provided on the real axis, which is pressed against the real axis bracket and the co-moving bracket via a concave cam group; the real axis bracket is acted upon by the concave cam group and can be linked to the virtual axis bracket through the co-moving bracket to pivot.

[0005] The above structure has the following disadvantages when used in practice:

[0006] 1. Since the virtual axis bracket is linked with the physical axis bracket via the co-moving bracket, the first base is separated from the co-moving bracket, the physical axis bracket, the second base, and the compression spring, and the elastic force of the compression spring cannot act on the virtual axis bracket and the first base to increase the friction force; as a result, the virtual axis bracket can be positioned at several preset specific opening and closing angles (i.e., the top engaging position on the concave cam group) with the physical axis bracket, but cannot provide sufficient torque (or friction) for the remaining opening and closing angles to achieve accurate positioning at any other opening and closing angles, thereby forming defects and limitations in application.

[0007] 2. Since the moving member and the second base are sequentially arranged on both sides of the first base, when the concave cam group acts on the second base, the second base and the physical shaft bracket will slide (change position) along the axial direction of the physical shaft. This situation will make the combined structure of the physical shaft bracket and the related plate body (housing) more complicated and prone to looseness during use.

[0008] In the invention case CN 114762025A, a foldable electronic device including a hinge assembly is disclosed. The foldable electronic device mainly comprises a fixed bracket provided with two parallel and synchronously linked first and second shafts, the first and second shafts are respectively pivotally connected to first and second arms, and the sides of the first and second arms are respectively connected to a bracket; the first and second shafts are respectively provided with first and second springs, the first and second springs are respectively pressed against the first and second arms via a ratchet plate, so that the first and second cam parts on the first and second arms are pressed against the rotating mechanism.

[0009] When this structure is actually used, the elastic force generated by the first and second springs can only act on the one side surface of the first and second arms 321 and 322 through one side surface of the stopper 360, so that the stopper 360 and the one side surface of the first and second arms generate friction; however, the friction force that can be generated by such a single surface is small, and it is difficult to support the two brackets 311 and 312 to be positioned at any opening and closing angle, resulting in defects and limitations in application.

[0010] In view of the above-mentioned shortcomings of conventional hinge mechanisms in practical applications, the inventor has studied ways to improve these shortcomings and finally produced the present utility model. Utility Model Content

[0011] The main purpose of the utility model is to provide an improved structure of a torsion module of a hinge device, wherein two pivoting parts are provided on a fixed bracket, and each pivoting part respectively penetrates a shaft; a swing arm assembly is pivoted on each shaft, and the swing arm assembly is composed of a main swing arm and a secondary swing arm that are axially adjacent and parallel, and the main swing arm and the secondary swing arm are respectively in axial contact with two opposite sides of the pivoting part at local parts, and a gap is formed between the main swing arm and the secondary swing arm when the pivoting part is clamped; the elastic force of at least one elastic member acts on at least one of the main swing arm and the secondary swing arm toward the pivoting part, so that the main swing arm and the secondary swing arm can be relatively elastically clamped on the two opposite sides of the pivoting part, thereby generating a tight friction force between each swing arm assembly and the fixed bracket, and maintaining a fully positioned torque effect at any relative pivot turning angle position.

[0012] Another object of the utility model is to provide an improved structure of a torsion module of a hinge device, wherein a recessed portion capable of fitting over the edge of the pivotal portion is provided on a side of the auxiliary swing arm facing the main swing arm, and when the depth of the recessed portion is less than the thickness of the pivotal portion, the swing arm and the main swing arm are blocked by the pivotal portion and cannot fit in contact, thereby forming the gap; when the depth of the recessed portion is not less than the thickness of the pivotal portion, at least one gasket may be provided between the pivotal portion and at least one of the main swing arm and the auxiliary swing arm, so that the combined thickness of the pivotal portion and the gasket is greater than the depth of the recessed portion, thereby ensuring that a gap is left between the main swing arm and the auxiliary swing arm, and thus the overall structure has a variety of different combination variations, which can be adapted to different practical needs.

[0013] Another object of the utility model is to provide an improved structure of a torsion module of a hinge device, wherein the swing arm assembly is composed of a main swing arm and a secondary swing arm, so the structures of the main swing arm and the secondary swing arm can be relatively simplified; compared with the single structural body design of traditional swing arm parts, the main swing arm and the secondary swing arm of the swing arm assembly respectively have simple shapes and structures, which can effectively reduce the difficulty of parts molding and improve production yield and product quality.

[0014] In order to achieve the above-mentioned purpose and effect, the technical means adopted by the utility model include: an improved structure of a torsion module of a hinge device, including: a fixed bracket, having two pivot parts, each of which passes through a pivot axis; two swing arm assemblies, which are pivoted on each of the shafts, respectively, and the swing arm assembly is composed of a main swing arm and a secondary swing arm which are adjacent and parallel in the axial direction, the main swing arm has a first clamping surface, which contacts a surface side formed in an axial direction on the pivot part, and the secondary swing arm has a second clamping surface, which contacts the pivot part. On the other side formed opposite to the above-mentioned axial direction, a gap is formed between the main swing arm and the auxiliary swing arm when the pivot part is clamped; the elastic force of at least one elastic member acts on at least one of the main swing arm and the auxiliary swing arm toward the pivot part, so that the main swing arm and the auxiliary swing arm can be elastically clamped against each other on the opposite sides of the pivot part with the first clamping surface and the second clamping surface respectively, so as to provide a torsional effect between each swing arm component and the fixed bracket, which can maintain sufficient positioning at any relative pivot bending position.

[0015] According to the above structure, a recessed portion capable of fitting onto the edge of the pivotal portion is provided on one side of the auxiliary swing arm facing the main swing arm, and the depth of the recessed portion is less than the thickness of the pivotal portion, so that when the first clamping surface and the second clamping surface are clamped against the two sides of the pivotal portion, the auxiliary swing arm is blocked by the pivotal portion and cannot be completely fitted onto the main swing arm, leaving the gap between the main swing arm and the auxiliary swing arm.

[0016] According to the above structure, a recessed portion capable of fitting over the edge of the pivotal portion is provided on the side of the auxiliary swing arm facing the main swing arm, and the depth of the recessed portion is not less than the thickness of the pivotal portion, and at least one gasket is provided between at least one of the first clamping surface and the second clamping surface and the pivotal portion, so that when the first clamping surface and the second clamping surface are clamped toward the two sides of the pivotal portion, they are blocked by the combination of the pivotal portion and the gasket, so that the main swing arm and the auxiliary swing arm cannot be completely fitted together, thereby generating the gap.

[0017] According to the above structure, one end of the main swing arm has an axial hole that can be fitted on the shaft, and the main swing arm is provided with a coupled portion on the side facing the auxiliary swing arm; one end of the auxiliary swing arm has an axial hole that can be fitted on the shaft, and the auxiliary swing arm is provided with a coupling portion corresponding to the coupled portion, and by combining the coupling portion with the coupled portion, the auxiliary swing arm and the main swing arm can form a synchronous linkage.

[0018] According to the above structure, a tooth portion is provided on the edge of one end of the two main swing arms close to the shaft hole, and a gear set composed of gears is provided between the two main swing arms, and the gears are respectively engaged with the two tooth portions, so that the two main swing arms can form a synchronous opening and closing linkage through the gear set.

[0019] According to the above structure, a plurality of cam portions are provided on a side of the main swing arm away from the first clamping surface, a cam seat is provided on the side of the main swing arm and is arranged on the shaft, and the cam seat is provided with a plurality of cams meshing with the cam portions of the main swing arm; a plurality of cam portions are provided on a side of the auxiliary swing arm away from the second clamping surface, a cam seat is provided on the side of the auxiliary swing arm and is arranged on the shaft, and the cam seat is provided with a plurality of cams meshing with the cam portions of the auxiliary swing arm.

[0020] According to the above structure, the elastic member is sleeved on a side of the shaft close to the auxiliary swing arm, and an end of the elastic member away from the cam seat is provided with a coupling seat engaged with the shaft. The coupling seat can be driven by two elastic members at the same time and synchronously transmit the elastic force of the two elastic members to the cam seat via the two shafts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the above-mentioned purpose, effect and feature of the utility model more specifically understood, the following description is made with reference to the following drawings:

[0022] [ Figure 1 ] is a partial plan cross-sectional view of a hinge mechanism traditionally used in flexible screens.

[0023] [ Figure 2 ] is a three-dimensional exploded structural diagram of the first embodiment of the utility model.

[0024] [ Figure 3 ] is the overall combined appearance diagram of the first embodiment of the utility model.

[0025] [ Figure 4 ] is a partial plan cross-sectional view of the first embodiment of the utility model.

[0026] [ Figure 5 ] is an operational schematic diagram (I) of the first embodiment of the utility model; it discloses that the two swing arm assemblies are in a fully retracted position parallel to each other beside the fixed bracket.

[0027] [ Figure 6 ] is an operational schematic diagram (II) of the first embodiment of the utility model; it discloses that the two swing arm assemblies are in a fully extended position extending outward in opposite directions beside the fixed bracket.

[0028] [ Figure 7 ] is an operational schematic diagram (three) of the first embodiment of the utility model; it discloses that the two swing arm assemblies are formed at other angles of bending and positioning positions between the folded position and the unfolded position beside the fixed bracket.

[0029] [ Figure 8 ] is a partial plan cross-sectional view of the second embodiment of the utility model.

[0030] Description of symbols in the accompanying drawings:

[0031] 1:Fix the bracket

[0032] 11: Pivot

[0033] 111: First side

[0034] 112: Side 2

[0035] 12: Pivot hole

[0036] 14: Axis

[0037] 15: Gasket

[0038] 2,2a: Swing arm assembly

[0039] 20: Swing arm

[0040] 201: pivotally connected portion

[0041] 202: Groove

[0042] 21: Main swing arm

[0043] 211,221,41,401: shaft hole

[0044] 212: Tooth

[0045] 213: First clamping surface

[0046] 214: combined part

[0047] 215,225: Cam

[0048] 22,22a: auxiliary swing arm

[0049] 222,222a: concave part

[0050] 223: Second clamping surface

[0051] 224: Joint

[0052] 3: Gear set

[0053] 31,32: Gear

[0054] 4,40,400: Cam seat

[0055] 42,402: Cam

[0056] 5: Elastic parts

[0057] 50: Combined seat

[0058] 501:Through hole

[0059] A: Clearance DETAILED DESCRIPTION

[0060] Please refer to Figures 2 to 4 As shown, it can be known that the structure of the first embodiment of the utility model mainly includes: a fixed bracket 1, a swing arm assembly 2 and an elastic member 5; wherein the fixed bracket 1 has two pivot parts 11, and each pivot part 11 has a pivot hole 12 in the center thereof, through which two parallel extending shafts 14 can be pivoted; the pivot part 11 has a first surface 111 and a second surface 112 at two ends (along the axial direction of the shaft 14) corresponding to the pivot hole 12.

[0061] The swing arm assembly 2 is composed of a main swing arm 21 and a secondary swing arm 22 that are adjacent to each other. One end of the main swing arm 21 has an axial hole 211 that can be fitted on the shaft 14, so that the main swing arm 21 can be pivoted on a side of the pivot portion 11. The main swing arm 21 has a first clamping surface 213 that contacts the first surface 111, and a side of the main swing arm 21 away from the first clamping surface 213 can be provided with a plurality of cam portions 215 as needed.

[0062] In a feasible embodiment, a tooth portion 212 is provided at an edge of one end of the main swing arm 21 close to the shaft hole 211, and a gear set 3 consisting of gears 31 and 32 is provided between the two main swing arms 21, and the gears 31 and 32 are respectively engaged with the two tooth portions 212, so that the two main swing arms 21 can form a synchronous opening and closing linkage through the gear set 3.

[0063] One end of the auxiliary swing arm 22 has an axial hole 221 that can be fitted on the shaft 14, so that the auxiliary swing arm 22 can be pivoted on the other side of the pivot portion 11. The auxiliary swing arm 22 has a second clamping surface 223 that contacts the second surface 112, and the side of the auxiliary swing arm 22 away from the second clamping surface 223 can be provided with a plurality of cam portions 225 as needed.

[0064] In the above structure, the main swing arm 21 is provided with a coupled portion 214 (which may be a recessed portion) on one side of the auxiliary swing arm 22, and the auxiliary swing arm 22 is provided with a coupling portion 224 (which may be a convex portion) corresponding to the coupled portion 214. By combining the coupling portion 224 with the coupled portion 214, the auxiliary swing arm 22 and the main swing arm 21 can be synchronously linked.

[0065] In this embodiment, a recess 222 capable of fitting over the edge of the pivot portion 11 is provided on the side of the auxiliary swing arm 22 facing the main swing arm 21, the depth of the recess 222 is less than the thickness of the pivot portion 11, and the second clamping surface 223 is disposed in the recess 222; when the first clamping surface 213 and the second clamping surface 223 are respectively clamped against the first surface 111 and the second surface 112 of the pivot portion 11, the auxiliary swing arm 22 is blocked by the pivot portion 11 and cannot be completely fitted against the main swing arm 21, so that a gap A is left between the main swing arm 21 and the auxiliary swing arm 22.

[0066] The elastic member 5 is sleeved on the shaft 14, and the elastic force of the elastic member 5 can act on at least one of the main swing arm 21 and the auxiliary swing arm 22 toward the pivot portion 11, so that the main swing arm 21 and the auxiliary swing arm 22 can approach the pivot portion (11) to each other, and the first clamping surface 213 and the second clamping surface 223 are elastically clamped to each other on the first surface 111 and the second surface 112 of the pivot portion 11, respectively, so as to provide a torsional force effect between each swing arm assembly 2 and the fixed bracket 1, which can maintain full positioning at any relative pivot bending position.

[0067] In a feasible embodiment, the elastic member 5 is sleeved on a position of the shaft 14 close to a side of the auxiliary swing arm 22, and a cam seat 4 is provided between the elastic member 5 and the auxiliary swing arm 22, the cam seat 4 is provided with an axial hole 41 that can be sleeved on the shaft 14, and a plurality of cams 42 are provided on the cam seat 4, which are respectively engaged with the cam portion 225 of the auxiliary swing arm 22; a cam seat 40 is also provided on a side of the main swing arm 21 away from the auxiliary swing arm 22, the cam seat 40 is provided with an axial hole 401 that can be sleeved on the shaft 14, and a plurality of cams 402 are provided on the cam seat 40, which are respectively engaged with the cam portion 215 of the main swing arm 21; and the end of the elastic member 5 away from the cam seat 4 can be provided with a coupling seat 50 as needed, and the coupling seat 50 is provided with a through hole 501 that can be sleeved on the shaft 14.

[0068] When the above structure is actually used, the combining seat 50 can be driven by the two elastic members 5 at the same time, and the elastic force of the two elastic members 5 can be synchronously transmitted to the cam seats 40 and 4 through the two shafts 14. The cam seats 40 and 4 are respectively pressed against the main swing arm 21 and the auxiliary swing arm 22, and the first clamping surface 213 and the second clamping surface 223 are linked to generate a positive pressure on the first surface 111 and the second surface 112 respectively, so that the first clamping surface 213 of the main swing arm 21 and the second clamping surface 223 of the auxiliary swing arm 22 respectively form a friction resistance of tight contact with the first surface 111 and the second surface 112 of the pivot part 11.

[0069] Please refer to Figures 5 to 7 As shown, it can be seen that in actual operation of the first embodiment of the utility model, when the two swing arm assemblies 2 are in a mutually parallel fully retracted position beside the fixing bracket 1 (such as Figure 5 ), the cam portion 215 of the main swing arm 21 is engaged with one of the cams 402 of the cam seat 40, and the cam portion 225 of the auxiliary swing arm 22 is engaged with one of the cams 42 of the cam seat 4; when the two swing arm assemblies 2 form a fully extended position (as shown) extending in opposite directions to each other beside the fixed bracket 1 Figure 6 As shown), the cam portion 215 of the main swing arm 21 can be engaged with another cam 402 of the cam seat 40, and the cam portion 225 of the auxiliary swing arm 22 can be engaged with another cam 42 of the cam seat 4.

[0070] When the two swing arm components 2 are formed at other angles between the folded position and the unfolded position beside the fixing bracket 1 (such as Figure 7 As shown in the figure, the cam portion 215 of the main swing arm 21 is located between the two cams 402 of the cam seat 40, and the cam portion 225 of the auxiliary swing arm 22 is located between the two cams 42 of the cam seat 4; at this time, the elastic forces of the two elastic members 5 respectively press against the main swing arm 21 and the auxiliary swing arm 22 through the cam seats 40 and 4, and can link the first clamping surface 213 and the second clamping surface 223 to generate positive pressure against the first surface 111 and the second surface 112 respectively, so that the main swing arm 21 and the auxiliary swing arm 22 respectively form contact friction resistance with the pivot portion 11, and then the two swing arm assemblies 2 can be positioned at other angle bending positions between the folded position and the unfolded position beside the fixed bracket 1, thereby having a wider range of applications.

[0071] Please refer to Figure 8 As shown, it can be known that the structure of the second embodiment of the utility model includes: a swing arm assembly 2a, and the same parts as the first embodiment, such as the fixing bracket 1 and the elastic member 5; wherein the swing arm assembly 2a has an auxiliary swing arm 22a, and the same main swing arm 21 as the first embodiment, and the difference between the auxiliary swing arm 22a and the auxiliary swing arm 22 is that: the auxiliary swing arm 22a is provided with a recessed portion 222a that can be fitted on the edge of the pivoting portion 11 on one side facing the main swing arm 21, and the depth of the recessed portion 222a is not less than the depth of the pivoting portion 11. Thickness, and at least one gasket 15 (or washer, or other similar objects) is provided between at least one of the first clamping surface 213, the second clamping surface 223 and the first surface 111, the second surface 112 of the pivotal portion 11, so that the thickness of the gasket 15 combined with the pivotal portion 11 is greater than the depth of the recess 222a, so that the gap A is maintained between the main swing arm 21 and the auxiliary swing arm 22a; in addition, the other parts of the auxiliary swing arm 22a have the same structure and assembly operation method as the aforementioned auxiliary swing arm 22, which will not be elaborated here.

[0072] In summary, the improved structure of the torque module of the hinge device of the utility model can indeed achieve the effect of generating a tight clamping friction between the swing arm assembly and the fixed bracket, so that sufficient torque can be obtained at any bending angle to provide the positioning requirement. It is indeed a novel and progressive utility model, and a utility model patent application is filed in accordance with the law; however, the content of the above description is only a description of the preferred embodiment of the utility model, and all changes, modifications, alterations or equivalent substitutions extended from the technical means and scope of the utility model should also fall within the scope of the patent application of the utility model.

Claims

1. An improved structure of a torsion module of a hinge device, characterized in that: The improved structure of the torsion module of the hinge device includes: A fixed bracket (1) having two pivoting parts (11), each of which is penetrated by a shaft (14); Two swing arm assemblies (2, 2a) are respectively pivotally mounted on the shaft (14), and the swing arm assemblies (2, 2a) are composed of a main swing arm (21) and a secondary swing arm (22, 22a) which are adjacent and arranged in parallel in the axial direction. The main swing arm (21) has a first clamping surface (213) which contacts a surface side formed on the pivot part (11) in an axial direction, and the secondary swing arm (22, 22a) has a second clamping surface (223) which contacts another surface side formed on the pivot part (11) in a direction opposite to the axial direction. The main swing arm (21) and the secondary swing arm (22, 22a) are clamped together. When the pivotal portion (11) is pivoted, a gap (A) is formed; the elastic force of at least one elastic member (5) acts on at least one of the main swing arm (21) and the auxiliary swing arm (22, 22a) toward the pivotal portion (11), so that the main swing arm (21) and the auxiliary swing arm (22, 22a) can be elastically clamped on the opposite sides of the pivotal portion (11) by the first clamping surface (213) and the second clamping surface (223), respectively, so as to provide a torsional force between the swing arm assembly (2) and the fixed bracket (1) to maintain full positioning at any relative pivoting bending position.

2. The improved structure of the torsion module of the hinge device according to claim 1, characterized in that: The auxiliary swing arm (22) is provided with a recess (222) on one side facing the main swing arm (21) and can be fitted on the edge of the pivotal portion (11). The depth of the recess (222) is less than the thickness of the pivotal portion (11), so that when the first clamping surface (213) and the second clamping surface (223) are clamped against the two sides of the pivotal portion (11), the auxiliary swing arm (22) is blocked by the pivotal portion (11) and cannot be completely fitted against the main swing arm (21), so that the gap (A) is left between the main swing arm (21) and the auxiliary swing arm (22).

3. The improved structure of the torsion module of the hinge device according to claim 1, characterized in that: The auxiliary swing arm (22a) is provided with a recess (222a) on one side facing the main swing arm (21) and can be fitted on the edge of the pivotal portion (11); the depth of the recess (222a) is not less than the thickness of the pivotal portion (11); and at least one gasket (15) is provided between at least one of the first clamping surface (213) and the second clamping surface (223) and the pivotal portion (11), so that when the first clamping surface (213) and the second clamping surface (223) are clamped against the two sides of the pivotal portion (11), they are blocked by the combination of the pivotal portion (11) and the gasket (15), so that the main swing arm (21) and the auxiliary swing arm (22a) cannot be completely fitted together, thereby generating the gap (A).

4. The improved structure of the torsion module of the hinge device according to any one of claims 1 to 3, characterized in that: One end of the main swing arm (21) has an axial hole (211) that can be sleeved on the shaft (14), and the main swing arm (21) is provided with a coupled portion (214) on the side facing the auxiliary swing arm (22, 22a); one end of the auxiliary swing arm (22, 22a) has an axial hole (221) that can be sleeved on the shaft (14), and the auxiliary swing arm (22, 22a) is provided with a coupling portion (224) corresponding to the coupled portion (214), and the coupling portion (224) is combined with the coupled portion (214) to enable the auxiliary swing arm (22, 22a) and the main swing arm (21) to form a synchronous linkage.

5. The improved structure of the torsion module of the hinge device according to claim 4, characterized in that: The two main swing arms (21) are provided with a toothed portion (212) at one end edge close to the shaft hole (211), and a gear set (3) composed of gears (31) and (32) is provided between the two main swing arms (21), and the gears (31) and (32) are respectively meshed with the two toothed portions (212), so that the two main swing arms (21) can form a synchronous opening and closing linkage via the gear set (3).

6. The improved structure of the torsion module of the hinge device according to any one of claims 1 to 3, characterized in that: The main swing arm (21) is provided with a plurality of cam portions (215) on a side away from the first clamping surface (213), and a cam seat (40) arranged on the shaft (14) is provided beside the main swing arm (21), and the cam seat (40) is provided with a plurality of cams (402) meshing with the cam portions (215) of the main swing arm (21); the auxiliary swing arm (22, 22a) is provided with a plurality of cam portions (225) on a side away from the second clamping surface (223), and a cam seat (4) engaged with the shaft (14) is provided beside the auxiliary swing arm (22, 22a), and the cam seat (4) is provided with a plurality of cams (42) meshing with the cam portions (225) of the auxiliary swing arm (22, 22a).

7. The improved structure of the torsion module of the hinge device according to claim 4, characterized in that: The main swing arm (21) is provided with a plurality of cam portions (215) on a side away from the first clamping surface (213), and a cam seat (40) arranged on the shaft (14) is provided beside the main swing arm (21), and the cam seat (40) is provided with a plurality of cams (402) meshing with the cam portions (215) of the main swing arm (21); the auxiliary swing arm (22, 22a) is provided with a plurality of cam portions (225) on a side away from the second clamping surface (223), and a cam seat (4) engaged with the shaft (14) is provided beside the auxiliary swing arm (22, 22a), and the cam seat (4) is provided with a plurality of cams (42) meshing with the cam portions (225) of the auxiliary swing arm (22, 22a).

8. The improved structure of the torsion module of the hinge device according to claim 5, characterized in that: The main swing arm (21) is provided with a plurality of cam portions (215) on a side away from the first clamping surface (213), and a cam seat (40) arranged on the shaft (14) is provided beside the main swing arm (21), and the cam seat (40) is provided with a plurality of cams (402) meshing with the cam portions (215) of the main swing arm (21); the auxiliary swing arm (22, 22a) is provided with a plurality of cam portions (225) on a side away from the second clamping surface (223), and a cam seat (4) engaged with the shaft (14) is provided beside the auxiliary swing arm (22, 22a), and the cam seat (4) is provided with a plurality of cams (42) meshing with the cam portions (225) of the auxiliary swing arm (22, 22a).

9. The improved structure of the torsion module of the hinge device according to claim 6, characterized in that: The elastic member (5) is sleeved on a side of the shaft (14) close to the auxiliary swing arm (22, 22a), and an end of the elastic member (5) away from the cam seat (4) is provided with a coupling seat (50) sleeved on the shaft (14). The coupling seat (50) can be driven by the two elastic members (5) at the same time, and synchronously transmit the elastic force of the two elastic members (5) to the cam seats (40) and (4) via the two shafts (14).

10. The improved structure of the torsion module of the hinge device according to claim 7, characterized in that: The elastic member (5) is sleeved on a side of the shaft (14) close to the auxiliary swing arm (22, 22a), and an end of the elastic member (5) away from the cam seat (4) is provided with a coupling seat (50) sleeved on the shaft (14). The coupling seat (50) can be driven by the two elastic members (5) at the same time, and synchronously transmit the elastic force of the two elastic members (5) to the cam seats (40) and (4) via the two shafts (14).

11. The improved structure of the torsion module of the hinge device according to claim 8, characterized in that: The elastic member (5) is sleeved on a position of the shaft (14) close to one side of the auxiliary swing arm (22, 22a), and an end of the elastic member (5) away from the cam seat (4) is provided with a coupling seat (50) sleeved on the shaft (14). The coupling seat (50) can be driven by the two elastic members (5) at the same time, and synchronously transmit the elastic force of the two elastic members (5) to the cam seats (40), (4) via the two shafts (14).

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