Folding hinge with adjustable middle plate and wear-resistant torsion module

Abstract

The utility model relates to the technical field of folding hinges, in particular to a folding hinge with an adjustable middle plate and a wear-resistant torsion module, which comprises a middle plate module and at least two torsion modules, the middle plate module comprises a middle plate A and two middle plates B, the two ends of the middle plate A are provided with first connecting parts, the middle plates B are provided with second connecting parts, and the first connecting parts are connected with the second connecting parts. A connecting adjusting groove and a welding groove are formed between the first connecting part and the second connecting part; the torsion module comprises a fixing base, an A gear arm, a B gear arm, a gear and a damping mechanism. According to the middle plate module, the length of the middle plate module is adjusted by adjusting the distance between the connecting adjusting grooves, and the flexibility of middle plate production is improved. The damping mechanism is in sliding friction connection with the A gear arm and the B gear arm through wear-resistant parts, abrasion of connection between the damping mechanism and the A gear arm and between the damping mechanism and the B gear arm is reduced, the service life of the torsion module is prolonged, and therefore the stability of equipment is improved, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of folding hinges, in particular to a folding hinge with an adjustable middle plate and a wear-resistant torsion module. Background Art

[0002] With the popularization of foldable screen devices, the performance of folding hinges, as key components of foldable screen devices, has attracted more and more attention.

[0003] However, there are two common problems with folding hinges on the market:

[0004] First, the middle plate is formed in one piece with fixed size, which makes it difficult to adjust it according to demand, limiting the flexibility of middle plate production.

[0005] Second, the torque module has insufficient wear resistance under long-term or high-intensity use, and is prone to wear and loosening, affecting the stability and service life of the equipment.

[0006] Therefore, there is an urgent need for an innovative folding hinge design that can not only achieve flexible adjustment of the middle plate size during the production process, but also significantly improve the wear resistance of the torque module to meet the market's urgent demand for high performance and high durability of folding screen devices. Utility Model Content

[0007] The purpose of the utility model is to provide a folding hinge with an adjustable middle plate and a wear-resistant torque module to improve the flexibility of middle plate production by adjusting the spacing of the connection adjustment slots. The damping mechanism and the A gear arm and the B gear arm are connected by sliding friction through wear-resistant parts, which reduces the wear of the connection between the damping mechanism and the A gear arm and the B gear arm, and prolongs the service life of the torque module, thereby achieving higher stability and longer service life of the equipment.

[0008] To achieve the above-mentioned purpose, the utility model provides a folding hinge with an adjustable middle plate and a wear-resistant torque module, including a middle plate module and at least two torque modules.

[0009] The middle plate module comprises a middle plate A and two middle plates B, both ends of the middle plate A are provided with a first connection part, the middle plate B is provided with a second connection part, the two middle plates B are respectively connected to the first connection parts at both ends of the middle plate A through the second connection parts, and a connection adjustment groove and a welding groove are provided between the first connection part and the second connection part;

[0010] The torque module is fixed to the middle plate B in one-to-one correspondence, and the torque module includes a fixing seat, an A gear arm, a B gear arm, a gear and a damping mechanism;

[0011] 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.

[0012] Preferably, the first connecting portion is provided with a matching groove and a first bevel, and the second connecting portion is provided with an extended edge and a second bevel;

[0013] The matching groove and the extending edge abut against each other, and the distance between the first connecting portion and the second connecting portion forms a connection adjustment groove, and the first oblique edge and the second oblique edge form a welding groove.

[0014] Preferably, the middle plate A and the middle plate B are both provided with a through connecting groove, and the through connecting groove is arranged along the axis of the middle plate A and the middle plate B. The second bevel is penetrated by a connecting hole, and the second bevel is connected with the through connecting groove through the connecting hole, so that the connecting adjustment groove, the welding groove and the through connecting groove are all connected.

[0015] 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;

[0016] 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.

[0017] Preferably, the friction wave end includes a protruding portion and a recessed portion cooperating with the protruding portion.

[0018] 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.

[0019] 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.

[0020] Preferably, the damping mechanism comprises a sliding seat, a reset member, a limit seat and a limit plate;

[0021] 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;

[0022] There are two reset members, which are respectively sleeved on the two shafts and abutted between the sliding seat and the limiting seat;

[0023] The wear-resistant part is arranged at one end of the slide seat facing the A gear arm or the B gear arm.

[0024] Preferably, the middle plate B is provided with a sunken groove for avoiding the A gear arm and the B gear arm, and the sunken groove is provided with a bearing recess and a receiving recess, the bearing recess is provided at one end of the sunken groove and is used to bear the tail end of the shaft rod, and the receiving recess is provided at the other end of the sunken groove and is used to receive the head end of the shaft rod.

[0025] Preferably, the limiting seat is provided with a limiting block for limiting the sliding stroke of the sliding seat.

[0026] Preferably, the middle plate B is provided with a sliding limit groove, and the slide seat slides in the sliding limit groove.

[0027] The beneficial effects of the utility model are as follows: the utility model adjusts the length dimension of the middle plate module by adjusting the spacing of the connection adjustment grooves, thereby improving the flexibility of the middle plate production.

[0028] The damping mechanism and the A gear arm and the B gear arm are connected by sliding friction through wear-resistant parts, which reduces the wear of the connection between the damping mechanism and the A gear arm and the B gear arm and extends the service life of the torque module, thereby achieving higher stability and extended service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the utility model.

[0030] Figure 2 This is a schematic diagram of the structure of the middle plate module of the utility model.

[0031] Figure 3 This is a structural schematic diagram of the connection state of the middle plate A and the middle plate B of the utility model.

[0032] Figure 4 This is a schematic structural diagram of the middle plate A and the middle plate B of the utility model in a separated state.

[0033] Figure 5 It is a structural schematic diagram of the middle plate B of the utility model.

[0034] Figure 6 It is a schematic diagram of the torque module structure of the utility model.

[0035] Figure 7 It is a schematic diagram of the structure of the torque module of the utility model in the explosion state.

[0036] Figure 8 This is a schematic diagram of the structure of the wear-resistant parts of the utility model.

[0037] Fig. 9 This is a schematic diagram of the B gear arm structure of the utility model.

[0038] Fig.10 It is a schematic diagram of the structure of the damping mechanism of the utility model.

[0039] Reference numerals include:

[0040] 1. Middle plate module; 11. Middle plate A; 111. First connection part; 112. Matching groove; 113. First bevel; 12. Middle plate B; 121. Second connection part; 122. Extended edge; 123. Second bevel; 124. Connecting hole; 125. Sinking groove; 126. Bearing concave platform; 127. Accommodating concave position; 128. Sliding limit groove; 13. Connection adjustment groove; 14. Welding groove; 15. Through-connecting groove; 2. Torque module; 21. Fixed Seat; 22, gear arm A; 23, gear arm B; 24, gear; 25, damping mechanism; 251, sliding seat; 252, reset member; 253, limit seat; 2531, limit block; 254, limit sheet; 26, wear-resistant part; 261, connecting end; 262, friction wave end; 263, protrusion; 2631, first protrusion; 2632, second protrusion; 2633, groove; 264, recessed part; 27, fixed slot; 28, shaft. DETAILED DESCRIPTION

[0041] The utility model is described in detail below with reference to the accompanying drawings.

[0042] See also Figures 1 to 10 As shown, a specific folding hinge of the utility model has an adjustable middle plate and a wear-resistant torsion module, including a middle plate module 1 and at least two torsion modules 2.

[0043] See also Figures 2 to 4 As shown, the middle plate module 1 includes a middle plate A11 and two middle plates B12, so that the middle plate module 1 is divided into three sections. Both ends of the middle plate A11 are provided with a first connection part 111, and the middle plate B12 is provided with a second connection part 121. The two middle plates B12 are respectively connected to the first connection parts 111 at both ends of the middle plate A11 through the second connection parts 121, so that the middle plate A11 and the two middle plates B12 are connected and fixed by welding.

[0044] Specifically, the first connection portion 111 is a concave or convex structure, and the second connection portion 121 is a concave or convex structure. In this embodiment, the first connection portion 111 is a convex structure, and the second connection portion 121 is a concave structure.

[0045] A connection adjustment groove 13 and a welding groove 14 are provided between the first connection portion 111 and the second connection portion 121. By adjusting the spacing of the connection adjustment grooves 13, the length of the middle plate module 1 can be adjusted to improve the flexibility of middle plate production. The welding groove 14 facilitates the first connection portion 111 and the second connection portion 121 to be welded and fixed.

[0046] Furthermore, the connection adjustment groove 13 is communicated with the welding groove 14 , and the solder enters the connection adjustment groove 13 from the welding groove 14 , so that the welding between the first connection part 111 and the second connection part 121 is more stable.

[0047] See also Figure 1 As shown, the torque module 2 is fixed to the middle plate B12 in a one-to-one correspondence, so that the torque module 2 is fixed to the middle plate B12. The torque module 2 includes a fixing seat 21, an A gear arm 22, a B gear arm 23, a gear 24 and a damping mechanism 25.

[0048] See also Figure 6 to Figure 7 As shown, the A gear arm 22 and the B gear arm 23 are rotationally connected to the fixed seat 21 respectively, and the number of damping mechanisms 25 is two. The two damping mechanisms 25 are slidingly connected to the two ends of the A gear arm 22 and the B gear arm 23 respectively and are slidingly and frictionally connected relative to the A gear arm 22 and the B gear arm 23. Wear-resistant parts 26 are provided at the connection between the damping mechanism 25 and the A gear arm 22 and the B gear arm 23.

[0049] Specifically, the wear-resistant part 26 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 26 caused by metal materials and avoids wear and deformation of the wear-resistant part 26 during friction.

[0050] The surface glossiness of the polished zirconium oxide ceramic is Ra value ≤ 0.03, which reduces the fine cutting caused by the friction between the two wear-resistant parts 26. The greater the hardness of the wear-resistant part 26 material, the smoother the surface, and the smaller the friction coefficient between the products.

[0051] Zirconia ceramics are less affected by thermal expansion and contraction, reducing the impact of temperature differences on spatial changes and affecting work performance.

[0052] The three-point bending strength of zirconia ceramics is at least 1000Mpa to ensure stable operation of the product.

[0053] 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.

[0054] The wear-resistant part 26 has high strength and hardness, excellent mechanical properties, wear resistance, scratch resistance, 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.

[0055] See also Figure 6 As shown, the damping mechanism 25 and the A gear arm 22 and the B gear arm 23 are connected by sliding friction via the wear-resistant part 26, thereby reducing the wear of the connection between the damping mechanism 25 and the A gear arm 22 and the B gear arm 23 and extending the service life of the torque module 2, thereby achieving higher stability and extended service life of the equipment.

[0056] See also Figure 3 to Figure 4 As shown, the first connection portion 111 of this embodiment is provided with a matching groove 112 and a first oblique edge 113 , and the second connection portion 121 is provided with an extending edge 122 and a second oblique edge 123 .

[0057] The matching groove 112 and the extending edge 122 abut against each other and the distance between the first connecting portion 111 and the second connecting portion 121 forms a connection adjustment groove 13. The first oblique edge 113 and the second oblique edge 123 form a welding groove 14.

[0058] Specifically, the welding groove 14 is located at the open end of the connection adjustment groove 13 , so that the solder can enter the connection adjustment groove 13 from the welding groove 14 .

[0059] See also Figure 4 As shown, the middle plate A11 and the middle plate B12 of this embodiment are both provided with a through-connecting groove 15, which is arranged along the axis of the middle plate A11 and the middle plate B12. The through-connecting groove 15 increases the torsional strength of the middle plate A11 and the middle plate B12.

[0060] A connecting hole 124 is provided through the second oblique side 123 , and the second oblique side 123 is connected with the through connecting groove 15 through the connecting hole 124 , so that the connection adjustment groove 13 , the welding groove 14 and the through connecting groove 15 are all connected.

[0061] By connecting the adjustment groove 13, the welding groove 14 and the through-connection groove 15, the solder is contained in the adjustment groove 13, the welding groove 14 and the through-connection groove 15, so that the connection between the middle plate A11 and the middle plate B12 is more firmly established.

[0062] See also Figures 6 to 10 As shown, the damping mechanism 25 , the A gear arm 22 and the B gear arm 23 of this embodiment are all provided with a fixed slot 27 , one end of the wear-resistant part 26 is provided with a connecting end 261 , and the other end of the wear-resistant part 26 is provided with a friction wave end 262 .

[0063] The wear-resistant parts 26 are respectively fixed to the fixed slots 27 of the damping mechanism 25, the A gear arm 22 and the B gear arm 23 through the connecting ends 261. The two wear-resistant parts 26 arranged opposite to each other are frictionally rotated and connected to each other through the friction wave ends 262, so that the wear-resistant parts 26 are frictionally rotated and connected to the connection between the damping mechanism 25 and the A gear arm 22 and the B gear arm 23, thereby reducing the wear of the connection between the damping mechanism 25 and the A gear arm 22 and the B gear arm 23.

[0064] See also Figure 8 As shown, the friction wave end 262 of this embodiment includes a protrusion 263 and a recessed portion 264 cooperating with the protrusion 263 .

[0065] The protrusion 263 is provided with a first protrusion 2631 and a second protrusion 2632, and a groove 2633 is provided between the first protrusion 2631 and the second protrusion 2632. The first protrusion 2631, the second protrusion 2632 and the groove 2633 are used to reduce the contact area of ​​the two friction wave ends 262 frictionally rotatingly connected to each other, so as to reduce the wear between the two wear-resistant parts 26.

[0066] See also Figure 7 As shown, shafts 28 are respectively provided on both sides of the fixing base 21 of this embodiment, so that the A gear arm 22 and the B gear arm 23 are rotatably connected to the fixing base 21 through the shafts 28 respectively.

[0067] The two damping mechanisms 25 are both disposed through the shaft 28 , so that the two damping mechanisms 25 are respectively slidably connected to the two ends of the A gear arm 22 and the B gear arm 23 .

[0068] See also Fig.10 As shown, the damping mechanism 25 of this embodiment includes a sliding seat 251 , a reset member 252 , a limiting seat 253 and a limiting sheet 254 .

[0069] See also Figure 7 As shown, the slide seat 251 is slidably connected to the two shaft rods 28 respectively, and the limiting seat 253 and the limiting plate 254 are fixed to the ends of the two shaft rods 28 respectively.

[0070] See also Fig.10 As shown, there are two reset members 252, which are springs or shrapnel, and a spring is used as an example in this embodiment. The two reset members 252 are respectively sleeved on the two shafts 28 and abut between the slide seat 251 and the limit seat 253. The damping mechanism 25 has a reverse force through the reset members 252, so that the damping mechanism 25 has linear damping, so that the two wear-resistant members 26 at the connection between the damping mechanism 25 and the A gear arm 22 and the B gear arm 23 keep in contact with each other.

[0071] See also Figure 6As shown, the wear-resistant part 26 is arranged at one end of the slide seat 251 facing the A gear arm 22 or the B gear arm 23 , so that the wear-resistant part 26 is arranged at the connection between the damping mechanism 25 and the A gear arm 22 and the B gear arm 23 .

[0072] See also Figure 5 As shown, the middle plate B12 of this embodiment is provided with a sinking groove 125 for avoiding the A gear arm 22 and the B gear arm 23 , and the sinking groove 125 prevents the middle plate B12 from interfering with the rotation of the A gear arm 22 and the B gear arm 23 .

[0073] The sinking groove 125 is provided with a bearing recess 126 and a receiving recess 127. The bearing recess 126 is provided at one end of the sinking groove 125 and is used to bear the tail end of the shaft rod 28. The tail end of the shaft rod 28 is supported by the bearing recess 126. The receiving recess 127 is provided at the other end of the sinking groove 125 and is used to bear the head end of the shaft rod 28, so that the head end of the shaft rod 28 is protected in the receiving recess 127.

[0074] See also Fig.10 As shown, the limit seat 253 of this embodiment is provided with a limit block 2531 for limiting the sliding stroke of the slide seat 251 . The limit block 2531 limits the sliding stroke of the slide seat 251 , thereby adjusting the working range of the damping mechanism 25 .

[0075] See also Figure 5 As shown, the middle plate B12 of this embodiment is provided with a sliding limit groove 128, and the slide seat 251 slides in the sliding limit groove 128, so that the sliding stroke of the slide seat 251 is controllable.

[0076] 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 folding hinge with an adjustable middle plate and a wear-resistant torque module, characterized in that: It comprises a middle plate module (1) and at least two torsion modules (2), The middle plate module (1) comprises a middle plate A (11) and two middle plates B (12), both ends of the middle plate A (11) are provided with a first connection part (111), the middle plate B (12) is provided with a second connection part (121), the two middle plates B (12) are respectively connected to the first connection parts (111) at both ends of the middle plate A (11) through the second connection parts (121), and a connection adjustment groove (13) and a welding groove (14) are provided between the first connection part (111) and the second connection part (121); The torque module (2) is fixed to the middle plate B (12) in a one-to-one correspondence, and the torque module (2) comprises a fixing seat (21), an A gear arm (22), a B gear arm (23), a gear (24) and a damping mechanism (25); The A gear arm (22) and the B gear arm (23) are rotatably connected to the fixed seat (21) respectively. The number of the damping mechanisms (25) is two. The two damping mechanisms (25) are slidably connected to the two ends of the A gear arm (22) and the B gear arm (23) respectively and are slidably and frictionally connected relative to the A gear arm (22) and the B gear arm (23). Wear-resistant parts (26) are provided at the connection points between the damping mechanisms (25) and the A gear arm (22) and the B gear arm (23).

2. A folding hinge with an adjustable middle plate and a wear-resistant torque module according to claim 1, characterized in that: The first connecting portion (111) is provided with a matching groove (112) and a first oblique edge (113), and the second connecting portion (121) is provided with an extending edge (122) and a second oblique edge (123); The matching groove (112) and the extending edge (122) abut against each other and the spacing between the first connecting portion (111) and the second connecting portion (121) forms a connection adjustment groove (13), and the first oblique edge (113) and the second oblique edge (123) form a welding groove (14).

3. A folding hinge with an adjustable middle plate and a wear-resistant torque module according to claim 2, characterized in that: The middle plate A (11) and the middle plate B (12) are both provided with a through-connecting groove (15), and the through-connecting groove (15) is arranged along the axis of the middle plate A (11) and the middle plate B (12); the second bevel (123) is provided with a connecting hole (124) through it, and the second bevel (123) is connected to the through-connecting groove (15) through the connecting hole (124), so that the connection adjustment groove (13), the welding groove (14) and the through-connecting groove (15) are all connected.

4. A folding hinge with an adjustable middle plate and a wear-resistant torque module according to claim 1, characterized in that: The damping mechanism (25), the A gear arm (22) and the B gear arm (23) are all provided with a fixed slot (27); one end of the wear-resistant part (26) is provided with a connecting end (261); and the other end of the wear-resistant part (26) is provided with a friction wave end (262); The wear-resistant parts (26) are respectively fixed to the damping mechanism (25), the A gear arm (22) and the fixed slots (27) of the B gear arm (23) through the connecting ends (261), and the two wear-resistant parts (26) arranged opposite to each other are frictionally connected to each other through the friction wave ends (262).

5. A folding hinge with an adjustable middle plate and a wear-resistant torque module according to claim 4, characterized in that: The friction wave end (262) comprises a protruding portion (263) and a recessed portion (264) matched with the protruding portion (263). The protruding portion (263) is provided with a first protrusion (2631) and a second protrusion (2632), and a groove (2633) is provided between the first protrusion (2631) and the second protrusion (2632).

6. A folding hinge with an adjustable middle plate and a wear-resistant torque module according to claim 1, characterized in that: Axles (28) are respectively provided on both sides of the fixing seat (21); the A gear arm (22) and the B gear arm (23) are rotatably connected to the fixing seat (21) via the axles (28); and the two damping mechanisms (25) are both disposed on the axles (28).

7. A folding hinge with an adjustable middle plate and a wear-resistant torque module according to claim 6, characterized in that: The damping mechanism (25) comprises a sliding seat (251), a reset member (252), a limiting seat (253) and a limiting plate (254); The sliding seat (251) is slidably connected to the two shaft rods (28) respectively, and the limiting seat (253) and the limiting plate (254) are respectively fixed to the ends of the two shaft rods (28); The number of the reset members (252) is two, and the two reset members (252) are respectively sleeved on the two shafts (28) and abutted between the sliding seat (251) and the limiting seat (253); The wear-resistant part (26) is arranged at one end of the slide seat (251) facing the A gear arm (22) or the B gear arm (23).

8. A folding hinge with an adjustable middle plate and a wear-resistant torque module according to claim 7, characterized in that: The middle plate B (12) is provided with a sinking groove (125) for avoiding the A gear arm (22) and the B gear arm (23); the sinking groove (125) is provided with a bearing recess (126) and a receiving recess (127); the bearing recess (126) is provided at one end of the sinking groove (125) and is used to bear the tail end of the shaft rod (28); the receiving recess (127) is provided at the other end of the sinking groove (125) and is used to receive the head end of the shaft rod (28).

9. A folding hinge with an adjustable middle plate and a wear-resistant torque module according to claim 7, characterized in that: The limiting seat (253) is provided with a limiting block (2531) for limiting the sliding stroke of the sliding seat (251).

10. A folding hinge with an adjustable middle plate and a wear-resistant torque module according to claim 7, characterized in that: The middle plate B (12) is provided with a sliding limit groove (128), and the sliding seat (251) slides in the sliding limit groove (128).

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