Backrest lock adopting clamping type assembled buffer block

Abstract

According to the technical scheme, the backrest lock comprises a lock shell and a buffer part, the buffer part is connected to the lock shell in a clamping mode, single-point impact is converted into multi-point contact through the buffer part, local abrasion is remarkably reduced, and the service life of the backrest lock is prolonged. And moreover, through clamping type assembly and a dynamic compensation mechanism, the wear surface is uniformly distributed, and local excessive loss is avoided, so that the aims of improving the assembly efficiency, reducing the wear of parts and enhancing the use reliability are fulfilled.

Description

Technical Field

[0001] The utility model relates to a backrest lock, and more specifically to a backrest lock which adopts a snap-fit ​​assembly buffer block. Background Art

[0002] In the car seat back lock system, the lock will collide with the lock bolt when in use, thereby producing abnormal noise, and it is also easy to cause the lock to be displaced or worn, and ultimately the lock needs frequent maintenance. The prior art usually uses an integrated plastic-coated buffer block. During production, the lock shell is placed on a mold, and then the plastic melt is injected to form a plastic-coated layer on the mold surface. However, in actual use, it is found that since the lock shell is usually a metal component, the shape of the lock shell needs to be considered during the plastic-coating operation, resulting in low actual operating efficiency. Therefore, a backrest lock with a snap-on assembly buffer block is needed. This device can improve assembly efficiency, reduce component wear and enhance reliability.

[0003] In view of the above reasons, how to improve assembly efficiency, reduce component wear and enhance reliability is exactly the problem considered in this application. Utility Model Content

[0004] In view of the shortcomings of the prior art, a backrest lock using a snap-on assembly buffer block is provided, which can improve assembly efficiency, reduce component wear and enhance reliability.

[0005] To achieve the above-mentioned purpose, the following technical solution is provided: a backrest lock using a snap-fit ​​assembly buffer block, comprising a lock shell and a buffer member, wherein the buffer member is connected to the lock shell by snap-fitting.

[0006] In summary, the above technical solution has the following beneficial effects: in order to improve the problem of low efficiency in the prior art, it is found through research that the collision point between the actual lock bolt and the lock shell is fixed, so although partial plastic coating of the lock shell can effectively expand the protection range, it will also cause the disadvantage of being difficult to maintain, so only a buffer piece needs to be set at the collision point to maintain the original protection effect;

[0007] The buffer is fixed by a clamping structure, without the need for traditional bolts or welding. The weak clamping point and the strong clamping point are used to achieve limited installation, ensuring quick loading and unloading. The clamping structure allows the buffer to fine-tune its position when subjected to force, absorbs impact energy through elastic deformation, and reduces wear caused by rigid collision.

[0008] The utility model converts single-point impact into multi-point contact through a buffer, significantly reducing local wear, and through a dynamic compensation mechanism of the snap-on assembly, the wear surface is evenly distributed to avoid excessive local loss, thereby achieving the purpose of improving assembly efficiency, reducing component wear and enhancing reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a three-dimensional structural schematic diagram of a backrest lock using a snap-fit ​​assembly buffer block;

[0010] Figure 2 It is a three-dimensional structural schematic diagram of the lock housing in the utility model;

[0011] Figure 3 It is a three-dimensional structural schematic diagram of the buffer member in the utility model;

[0012] Figure 4 It is a cross-sectional view of the buffer member in the utility model.

[0013] Reference numerals: 1, lock housing; 2, buffer member;

[0014] 11. First plug-in slot; 12. Second plug-in slot; 13. Limiting member;

[0015] 21. Base; 22. Snap-on piece; 23. Connector; 24. Slot; 25. Arc-shaped snap-on piece; 26. First top plate; 27. Limiting piece; 28. Second top plate. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0017] Reference Figures 1-4 As shown, a backrest lock using a snap-fit ​​assembly buffer block includes a lock housing 1 and a buffer member 2, wherein the buffer member 2 is connected to the lock housing 1 by snap-fitting.

[0018] In order to improve the problem of low efficiency in the prior art, it is found through research that the collision point between the actual lock bolt and the lock housing 1 is fixed, so although partial plastic coating of the lock housing 1 can effectively expand the protection range, it will also cause the disadvantage of being difficult to maintain. Therefore, it is only necessary to set a buffer 2 at the collision point to maintain the original protection effect;

[0019] The buffer 2 is fixed by a clamping structure without the need for traditional bolts or welding. The weak clamping point and the strong clamping point are used to achieve limited installation, ensuring quick assembly and disassembly. The clamping structure allows the buffer 2 to fine-tune its position when subjected to force, absorbs impact energy through elastic deformation, and reduces wear caused by rigid collision.

[0020] The utility model converts single-point impact into multi-point contact through the buffer member 2, significantly reducing local wear, and through the snap-fit assembly with a dynamic compensation mechanism, evenly distributing the worn surfaces to avoid local excessive wear, thereby achieving the purpose of improving the assembly efficiency, reducing component wear, and enhancing the reliability of use.

[0021] Further, the buffer member 2 includes a base 21 and two snap tabs 22. The lock housing 1 is provided with a first insertion slot 11. The two snap tabs 22 are both fixedly connected to the base 21, and the two snap tabs 22 are respectively engaged with two opposite inner walls of the first insertion slot 11.

[0022] The most basic snap-fit function can be achieved by the snap connection of the two snap tabs 22, and a deformation space can be left to ensure a certain degree of elasticity.

[0023] Further, the buffer member 2 further includes a connecting member 23. The base 21 is fixedly connected to the connecting member 23, and the two snap tabs 22 are both fixedly connected to the connecting member 23. The base 21, the connecting member 23, and the two snap tabs 22 form a groove shape.

[0024] The connecting member 23 can prevent the buffer member 2 from moving excessively by abutting against the lock housing 1, playing a certain limiting role.

[0025] Further, the connecting member 23 is further provided with a slot hole 24.

[0026] The slot hole 24 can save materials and reduce costs on the basis of ensuring the structural stability of the buffer member 2.

[0027] Further, the snap tab 22 includes two arc-shaped snap members 25. The lock housing 1 is further provided with a second insertion slot 12. The two snap members are respectively fixedly connected to the two snap tabs 22. The two arc-shaped snap members 25 are both engaged with the inner wall of the second insertion slot 12. The snap tab 22, the arc-shaped snap members 25, and the connecting member 23 form a groove shape, and the first insertion slot 11 is connected to the second insertion slot 12.

[0028] The groove shape formed by the snap tab 22, the arc-shaped snap members 25, and the connecting member 23 can be used as a structure similar to a clamp, so the stability can be better ensured through this groove shape.

[0029] Further, the buffer member 2 further includes a first top plate 26. The first top plate 26 is fixedly connected to the connecting member 23, and the first top plate 26 and the base 21 form a clamping structure to clamp the lock housing 1.

[0030] Further, the lock housing 1 is fixedly connected with a limiting member 13. The buffer member 2 further includes a limiting piece 27. The limiting piece 27 is fixedly connected to the connecting member 23 and is engaged with the limiting member 13.

[0031] The limiting member 13 is usually a protrusion formed during the molding of the lock housing 1, which facilitates the installation of other components. The setting of the limiting piece 27 can utilize the limiting member 13 to form a second clamping structure to maintain the stability of the assembly.

[0032] Furthermore, the buffer member 2 further includes a second top plate 28. The second top plate 28 is fixedly connected to the connecting member 23, and the second top plate 28 and the base 21 form a clamping structure to clamp the limiting member 13.

[0033] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A backrest lock using a snap-fit ​​assembly buffer block, characterized in that: The utility model comprises a lock shell and a buffer component, wherein the buffer component is connected to the lock shell by a clamping mode.

2. A backrest lock using a snap-fit ​​assembly buffer block according to claim 1, characterized in that: The buffer member comprises a base and two clamping plates. The lock housing is provided with a first plug-in slot. The two clamping plates are fixedly connected to the base. The two clamping plates are respectively clamped with two inner walls opposite to the first plug-in slot.

3. A backrest lock using a snap-fit ​​assembly buffer block according to claim 2, characterized in that: The buffer also includes a connecting piece, the base is fixedly connected to the connecting piece, the two clamping pieces are fixedly connected to the connecting piece, and the base, the connecting piece and the two clamping pieces form a groove shape.

4. A backrest lock using a snap-fit ​​assembly buffer block according to claim 3, characterized in that: The connecting piece is also provided with a slotted hole.

5. A backrest lock using a snap-fit ​​assembly buffer block according to claim 3, characterized in that: The card connecting piece includes two arc-shaped card connecting parts, and the lock shell is also provided with a second plug-in slot. The two card connecting parts are fixedly connected to the two card connecting pieces respectively, and the two arc-shaped card connecting parts are both plug-in connected to the inner wall of the second plug-in slot. The card connecting piece, the arc-shaped card connecting part and the connecting part form a groove shape, and the first plug-in slot is connected to the second plug-in slot.

6. A backrest lock with a snap-fit ​​assembly buffer block according to any one of claims 3 to 5, characterized in that: The buffer component also includes a first top plate, the first top plate is fixedly connected to the connecting component, and the first top plate and the base form a clamping structure to clamp the lock shell.

7. A backrest lock using a snap-fit ​​assembly buffer block according to claim 6, characterized in that: The lock housing is fixedly connected to the limiting member, and the buffer member further comprises a limiting plate, which is fixedly connected to the connecting member and clamped with the limiting member.

8. A backrest lock using a snap-fit ​​assembly buffer block according to claim 7, characterized in that: The buffer component also includes a second top plate, the second top plate is fixedly connected to the connecting component, and the second top plate and the base form a clamping structure to clamp the limiting component.

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