Torsion module of folding hinge

Abstract

The utility model relates to the technical field of folding hinges, in particular to a torsion module of a folding hinge, which comprises a fixed seat, a gear arm A, a gear arm B, a gear and a damping mechanism, and wear-resistant parts are arranged at the joints of the damping mechanism and the gear arm A and the gear arm B. According to the folding hinge, abrasion of the connecting positions of the damping mechanism and the A gear arm and the B gear arm is reduced through the abrasion-resistant parts, when the abrasion-resistant parts are excessively abraded, the torsion module can work normally only by replacing the abrasion-resistant parts, the service life of the torsion module is prolonged, and the use and maintenance cost of the folding hinge is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of folding hinges, in particular to a torsion module of a folding hinge. Background Art

[0002] The torque module of the folding hinge is a key component in folding screen devices (such as mobile phones, tablets, etc.). It is mainly responsible for realizing the folding and unfolding functions of the device and providing the necessary damping and stability.

[0003] In order to provide the necessary damping and stability for the folding hinge, the conventional torsion module also includes a damping mechanism. During the folding and unfolding of the folding hinge, the wear of the torsion module gradually increases. When the service life of the torsion module reaches the design period, the entire torsion module can only be replaced, which increases the use and maintenance cost of the folding hinge, so improvement is needed. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies of the prior art and provide a torsion module of a folding hinge, which reduces the wear of the connection between the damping mechanism and the A gear arm and the B gear arm through wear-resistant parts, and when the wear-resistant parts are excessively worn, only the wear-resistant parts need to be replaced to enable the torque module to work normally, thereby extending the service life of the torque module and reducing the use and maintenance costs of the folding hinge.

[0005] To achieve the above-mentioned purpose, the utility model provides a torsion module of a folding hinge, comprising a fixing seat, an A gear arm, a B gear arm, a gear and a damping mechanism.

[0006] The A gear arm and the B gear arm are rotatably connected to the fixed seat respectively, the number of the damping mechanisms is two, the two damping mechanisms are slidably connected to the two ends of the A gear arm and the B gear arm respectively and are slidably and frictionally connected relative to the A gear arm and the B gear arm, and wear-resistant parts are provided at the connection between the damping mechanism and the A gear arm and the B gear arm;

[0007] The number of the gears is two, and the two gears are rotatably disposed between the fixing seat and the damping mechanism, and the two gears, the A gear arm and the B gear arm are all meshed and connected.

[0008] Preferably, the damping mechanism, the A gear arm and the B gear arm are all provided with a fixed slot, one end of the wear-resistant part is provided with a connecting end, and the other end of the wear-resistant part is provided with a friction wave end;

[0009] The wear-resistant parts are respectively fixed to the fixing slots of the damping mechanism, the A gear arm and the B gear arm through the connecting ends, and the two wear-resistant parts arranged opposite to each other are frictionally rotated and connected with each other through the friction wave ends.

[0010] Preferably, the friction wave end includes a protruding portion and a recessed portion cooperating with the protruding portion.

[0011] The protruding portion is provided with a first protrusion and a second protrusion, and a groove is provided between the first protrusion and the second protrusion.

[0012] Preferably, the A gear arm and the B gear arm each include a rotating portion and a connecting portion.

[0013] The rotating part is provided with a rotating groove, the fixing seat is provided with a convex block, and the convex block is rotatably connected with the rotating part through the rotating groove;

[0014] The connecting portion is provided with a first card interface, an opening end of the first card interface is provided with a guide slide portion, and a pin rod is provided inside the first card interface.

[0015] Preferably, the connection portion is provided with a positioning groove and a positioning block, and the positioning groove and the positioning block are both used for positioning and connecting with the external connection end;

[0016] A clearance groove is arranged between the two positioning blocks, and the clearance groove is used to prevent the connection part from interfering with the external connection end.

[0017] Preferably, guide sliding blocks are provided on both sides of the connecting portion, and a stop step is provided at one end of the guide sliding block close to the rotating portion.

[0018] Preferably, shafts are respectively provided on both sides of the fixing seat, and the A gear arm and the B gear arm are rotatably connected to the fixing seat through the shafts respectively; and the two damping mechanisms are both penetrated through the shafts.

[0019] Preferably, the damping mechanism comprises a sliding seat, a reset member, a limit seat and a limit plate;

[0020] The sliding seat is slidably connected to the two shafts respectively, and the limiting seat and the limiting plate are fixed to the ends of the two shafts respectively;

[0021] There are two reset members, which are respectively sleeved on the two shafts and abutted between the sliding seat and the limiting seat;

[0022] The wear-resistant part is arranged at one end of the slide seat facing the A gear arm or the B gear arm.

[0023] Preferably, the limiting seat is provided with a limiting block for limiting the sliding stroke of the sliding seat.

[0024] The beneficial effects of the utility model: the utility model reduces the wear of the connection between the damping mechanism and the A gear arm and the B gear arm through the wear-resistant parts, and when the wear-resistant parts are excessively worn, only the wear-resistant parts need to be replaced to enable the torque module to work normally, thereby extending the service life of the torque module and reducing the use and maintenance costs of the folding hinge. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model.

[0026] Figure 2 It is a schematic diagram of the explosion structure of the utility model.

[0027] Figure 3 This is a schematic diagram of the structure of the wear-resistant parts of the utility model.

[0028] Figure 4 It is a structural schematic diagram of the B gear arm of the utility model.

[0029] Figure 5 It is a schematic diagram of the structure of the other side of the B gear arm of the utility model.

[0030] Figure 6 It is a schematic diagram of the explosion structure of the damping mechanism of the utility model.

[0031] Reference numerals include:

[0032] 1. Fixed seat; 11. Projection; 12. Axle; 2. Gear arm A; 21. Fixed card slot; 3. Gear arm B; 31. Rotating part; 311. Rotating slot; 32. Connecting part; 321. First card interface; 322. Guide slide part; 323. Tip rod; 324. Positioning slot; 325. Positioning block; 326. Displacement slot; 327. Guide slide block; 328. Stop step; 4. Gear; 5. Damping mechanism; 51. Sliding seat; 52. Resetting part; 53. Limiting seat; 53. Limiting block; 54. Limiting sheet; 6. Wear-resistant part; 61. Connecting end; 62. Friction wave end; 63. Protrusion; 631. First protrusion; 632. Second protrusion; 633. Groove; 64. Recessed part. DETAILED DESCRIPTION

[0033] The utility model is described in detail below with reference to the accompanying drawings.

[0034] See also Figures 1 to 6 As shown, a torque module of a folding hinge of the utility model includes a fixing seat 1, an A gear arm 2, a B gear arm 3, a gear 4 and a damping mechanism 5.

[0035] The A gear arm 2 and the B gear arm 3 are rotationally connected to the fixed seat 1 respectively. There are two damping mechanisms 5. The two damping mechanisms 5 are slidingly connected to the two ends of the A gear arm 2 and the B gear arm 3 respectively and are slidingly and frictionally connected relative to the A gear arm 2 and the B gear arm 3. Wear-resistant parts 6 are provided at the connection between the damping mechanism 5 and the A gear arm 2 and the B gear arm 3.

[0036] Specifically, the wear-resistant part 6 is made of zirconia ceramics, and the Mohs hardness of zirconia ceramics is between 8.5 and 9.1, which reduces scratches on the wear-resistant part 6 caused by metal materials and avoids wear and deformation of the wear-resistant part 6 during friction.

[0037] After polishing, the surface glossiness of the zirconia ceramic is Ra value ≤ 0.03, which reduces the fine cutting caused by the friction between the two wear-resistant parts 6. The greater the hardness of the wear-resistant part 6 material, the smoother the surface, and the smaller the friction coefficient between the products.

[0038] Zirconia ceramics are less affected by thermal expansion and contraction, reducing the impact of temperature differences on spatial changes and affecting work performance.

[0039] The three-point bending strength of zirconia ceramics is at least 1000Mpa to ensure stable operation of the product.

[0040] Since ceramics are highly resistant to corrosion, the effects of dimensional changes caused by contact with cosmetics and chemicals are reduced, thus ensuring normal operation.

[0041] The wear-resistant part 6 has high strength and hardness, excellent mechanical properties, wear resistance and scratch resistance. It has good chemical stability, acid and alkali corrosion resistance, and can remain stable in many harsh environments. It has a high melting point, can work normally in a high temperature environment, and has good electrical insulation.

[0042] When in use, the wear of the connection between the damping mechanism 5 and the A gear arm 2 and the B gear arm 3 is reduced by the wear-resistant part 6, and when the wear-resistant part 6 is excessively worn, only the wear-resistant part 6 needs to be replaced to enable the torque module to work normally, thereby extending the service life of the torque module and reducing the use and maintenance costs of the folding hinge.

[0043] There are two gears 4, which are rotatably disposed between the fixing base 1 and the damping mechanism 5, and the two gears 4, the A gear arm 2 and the B gear arm 3 are all meshed and connected. The A gear arm 2 and the B gear arm 3 are linked by the gear 4, so that the torque module works more stably and rotates more linearly.

[0044] See also Figures 2 to 3 As shown, the damping mechanism 5, the A gear arm 2 and the B gear arm 3 of this embodiment are all provided with a fixed slot 21, one end of the wear-resistant part 6 is provided with a connecting end 61, and the other end of the wear-resistant part 6 is provided with a friction wave end 62.

[0045] The wear-resistant parts 6 are respectively fixed to the fixed slots 21 of the damping mechanism 5, the A gear arm 2 and the B gear arm 3 through the connecting ends 61. The two wear-resistant parts 6 arranged opposite to each other are frictionally rotated and connected to each other through the friction wave ends 62, so that the wear-resistant parts 6 are frictionally rotated and connected to the connection between the damping mechanism 5 and the A gear arm 2 and the B gear arm 3, thereby reducing the wear of the connection between the damping mechanism 5 and the A gear arm 2 and the B gear arm 3.

[0046] See also Figure 3 As shown, the friction wave end 62 of this embodiment includes a protrusion 63 and a recessed portion 64 cooperating with the protrusion 63 .

[0047] The protrusion 63 is provided with a first protrusion 631 and a second protrusion 632, and a groove 633 is provided between the first protrusion 631 and the second protrusion 632. The first protrusion 631, the second protrusion 632 and the groove 633 are used to reduce the contact area of ​​the two friction wave ends 62 frictionally rotatingly connected with each other, so as to reduce the wear between the two wear-resistant parts 6.

[0048] Specifically, during use, more grease can be injected between the two wear-resistant parts 6 through the first protrusion 631 , the second protrusion 632 and the groove 633 to reduce the wear between the two wear-resistant parts 6 .

[0049] See also Figures 4 to 5 As shown, the A gear arm 2 and the B gear arm 3 of this embodiment both include a rotating portion 31 and a connecting portion 32 .

[0050] The rotating portion 31 is provided with a rotating groove 311 , and the fixing seat 1 is provided with a protrusion 11 , and the protrusion 11 is rotatably connected to the rotating portion 31 through the rotating groove 311 .

[0051] The connecting portion 32 is provided with a first card interface 321, and a guide slide portion 322 is provided at the open end of the first card interface 321. A pin rod 323 is provided in the first card interface 321, and the guide slide portion 322 facilitates the external connecting end to be inserted into the connecting portion 32 and connected to the connecting portion 32. The pin rod 323 allows the external connecting end to rotate or limit along the pin rod 323, so that the external connecting end of the connecting portion 32 remains connected.

[0052] See also Figures 4 to 5 As shown, the connection portion 32 of this embodiment is provided with a positioning groove 324 and a positioning block 325, and the positioning groove 324 and the positioning block 325 are both used for positioning and connecting with the external connection end, so that the connection portion 32 is more accurately connected.

[0053] A clearance groove 326 is provided between the two positioning blocks 325 , and the clearance groove 326 prevents the connection portion 32 from interfering with an external connection end.

[0054] See also Figure 4As shown, guide sliders 327 are provided on both sides of the connection part 32 of this embodiment, and a stop step 328 is provided at one end of the guide slider 327 close to the rotating part 31. The guide slider 327 facilitates the sliding connection between the external connection end and the connection part 32. The stop step 328 can stop the external connection end from sliding.

[0055] See also Figure 2 As shown, shafts 12 are respectively provided on both sides of the fixing base 1 of this embodiment, so that the A gear arm 2 and the B gear arm 3 are rotatably connected to the fixing base 1 through the shafts 12 respectively.

[0056] The two damping mechanisms 5 are both disposed through the shaft 12 , so that the two damping mechanisms 5 are respectively slidably connected to the two ends of the A gear arm 2 and the B gear arm 3 .

[0057] See also Figure 6 As shown, the damping mechanism 5 of this embodiment includes a sliding seat 51 , a reset member 52 , a limiting seat 53 and a limiting sheet 54 .

[0058] The sliding seat 51 is slidably connected to the two shaft rods 12 , and the limiting seat 53 and the limiting sheet 54 are fixed to the ends of the two shaft rods 12 .

[0059] There are two reset members 52, which are springs or shrapnel, and a spring is used as an example in this embodiment. The two reset members 52 are respectively sleeved on the two shafts 12 and abut between the slide seat 51 and the limit seat 53. The damping mechanism 5 is provided with a reverse force through the reset members 52, so that the damping mechanism 5 has linear damping, so that the two wear-resistant members 6 at the connection between the damping mechanism 5 and the A gear arm 2 and the B gear arm 3 keep in contact with each other.

[0060] The wear-resistant part 6 is arranged at one end of the slide seat 51 facing the A gear arm 2 or the B gear arm 3 , so that the wear-resistant part 6 is arranged at the connection between the damping mechanism 5 and the A gear arm 2 and the B gear arm 3 .

[0061] See also Figure 6 As shown, the limit seat 53 of this embodiment is provided with a limit block 531 for limiting the sliding stroke of the slide seat 51 . The limit block 531 limits the sliding stroke of the slide seat 51 , thereby achieving the adjustment of the working range of the damping mechanism 5 .

[0062] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A torsion module of a folding hinge, characterized in that: It comprises a fixed seat (1), an A gear arm (2), a B gear arm (3), a gear (4) and a damping mechanism (5). The A gear arm (2) and the B gear arm (3) are rotatably connected to the fixed seat (1) respectively. The number of the damping mechanisms (5) is two. The two damping mechanisms (5) are slidably connected to the two ends of the A gear arm (2) and the B gear arm (3) respectively and are slidably and frictionally connected relative to the A gear arm (2) and the B gear arm (3). Wear-resistant parts (6) are provided at the connection points between the damping mechanisms (5) and the A gear arm (2) and the B gear arm (3); The number of the gears (4) is two, and the two gears (4) are rotatably arranged between the fixing seat (1) and the damping mechanism (5), and the two gears (4), the A gear arm (2) and the B gear arm (3) are all meshingly connected.

2. The torsion module of a folding hinge according to claim 1, characterized in that: The damping mechanism (5), the A gear arm (2) and the B gear arm (3) are all provided with a fixed slot (21); one end of the wear-resistant part (6) is provided with a connecting end (61); and the other end of the wear-resistant part (6) is provided with a friction wave end (62); The wear-resistant part (6) is respectively fixed to the damping mechanism (5), the A gear arm (2) and the fixed slot (21) of the B gear arm (3) through the connecting end (61), and the two wear-resistant parts (6) arranged opposite to each other are frictionally connected to each other through the friction wave end (62).

3. The torsion module of a folding hinge according to claim 2, characterized in that: The friction wave end (62) comprises a protruding portion (63) and a recessed portion (64) matched with the protruding portion (63). The protruding portion (63) is provided with a first protrusion (631) and a second protrusion (632), and a groove (633) is provided between the first protrusion (631) and the second protrusion (632).

4. The torsion module of a folding hinge according to claim 1, characterized in that: The A gear arm (2) and the B gear arm (3) each include a rotating portion (31) and a connecting portion (32). The rotating part (31) is provided with a rotating groove (311), the fixing seat (1) is provided with a protrusion (11), and the protrusion (11) is rotatably connected to the rotating part (31) via the rotating groove (311); The connecting portion (32) is provided with a first card interface (321), the opening end of the first card interface (321) is provided with a guide slide portion (322), and a pin rod (323) is provided inside the first card interface (321).

5. The torsion module of the folding hinge according to claim 4, characterized in that: The connecting portion (32) is provided with a positioning groove (324) and a positioning block (325), and the positioning groove (324) and the positioning block (325) are both used for positioning and connecting with an external connecting end (61); A clearance groove (326) is provided between the two positioning blocks (325), and the clearance groove (326) is used to prevent the connection part (32) from interfering with the external connection end (61).

6. A torsion module of a folding hinge according to claim 4 or 5, characterized in that: Guide slide blocks (327) are provided on both sides of the connecting portion (32), and a stop step (328) is provided on one end of the guide slide block (327) close to the rotating portion (31).

7. The torsion module of a folding hinge according to claim 1, characterized in that: Axles (12) are respectively arranged on both sides of the fixing seat (1); the A gear arm (2) and the B gear arm (3) are respectively rotatably connected to the fixing seat (1) via the axles (12); and the two damping mechanisms (5) are both arranged on the axles (12).

8. The torsion module of the folding hinge according to claim 7, characterized in that: The damping mechanism (5) comprises a sliding seat (51), a reset member (52), a limiting seat (53) and a limiting plate (54); The sliding seat (51) is slidably connected to the two shaft rods (12) respectively, and the limiting seat (53) and the limiting plate (54) are respectively fixed to the ends of the two shaft rods (12); The number of the reset members (52) is two, and the two reset members (52) are respectively sleeved on the two shafts (12) and abutted between the sliding seat (51) and the limiting seat (53); The wear-resistant part (6) is arranged at one end of the slide seat (51) facing the A gear arm (2) or the B gear arm (3).

9. The torsion module of the folding hinge according to claim 8, characterized in that: The limiting seat (53) is provided with a limiting block (531) for limiting the sliding stroke of the sliding seat (51).

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