Backrest lock plastic buckle structure capable of eliminating wobble gap

Abstract

This utility model discloses a plastic buckle structure for a backrest lock that eliminates wobbling gaps. It includes a backrest frame assembly, a plastic buckle, an unlocking handle, a backrest lock unlocking wire, and a backrest lock assembly. The unlocking handle is mounted on the upper part of the backrest frame assembly, and the backrest lock assembly is mounted on the side of the backrest frame assembly. The plastic buckle engages with the unlocking handle, and the backrest lock unlocking wire passes through the plastic buckle and connects to the unlocking handle. The plastic buckle is constructed as an L-shaped hollow structure, with a groove on the outside of the end that engages with the unlocking handle. Symmetrical top-locking structures are provided at both ends of one side of the groove. This utility model adds top-locking structures to the plastic buckle, which ensures the elimination of gaps without significantly affecting the unlocking force of the handle or causing unlocking jamming.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, specifically a backrest lock plastic buckle structure that can eliminate wobbling gaps. Background Technology

[0002] Currently, the stability and reliability of the backrest lock are crucial in the design of car seat backrests. The plastic buckle and unlocking handle of the backrest lock are key components of the backrest lock system, and their precision of fit directly affects the user experience.

[0003] Conventional backrest lock plastic buckle structures have a certain tolerance gap between the buckle and the handle dimensions during dimensional matching. According to dimensional chain calculations, there is also a vertical gap between them. During bumpy driving, this gap can cause the plastic buckle and handle to collide, producing abnormal noise and reducing ride comfort. If the buckle and handle are fitted with a zero-adhesion or interference fit to avoid noise, it will result in excessive unlocking force and jamming of the handle, affecting the convenience and reliability of backrest unlocking.

[0004] The information disclosed in the above background section is only intended to enhance the understanding of the overall background of this utility model, and should not be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] To address the aforementioned shortcomings, the present invention aims to provide a plastic buckle structure for a backrest lock that can eliminate wobbling gaps. A top-clamp structure is added to the plastic buckle of the backrest lock. This design not only ensures the elimination of gaps but also does not significantly affect the unlocking force of the buckle or cause unlocking jamming.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A backrest lock plastic buckle structure that can eliminate wobbling gaps includes a backrest frame assembly, a plastic buckle, an unlocking handle, a backrest lock unlocking wire, and a backrest lock assembly. The unlocking handle is installed on the upper part of the backrest frame assembly, and the backrest lock assembly is installed on the side of the backrest frame assembly. The backrest lock plastic buckle engages with the unlocking handle. The backrest lock plastic buckle is constructed as an L-shaped hollow structure. One end of the backrest lock unlocking wire is connected to the backrest lock assembly, and the other end of the backrest lock unlocking wire passes through the hollow part of the plastic buckle and engages in the plastic buckle. A groove is provided on the outside of the end of the plastic buckle that engages with the unlocking handle, and top locking structures are symmetrically arranged at both ends of one side of the groove.

[0008] Furthermore, the top card structure is constructed as an arc-shaped wing structure.

[0009] Furthermore, the top card structure is constructed as a zigzag wing structure.

[0010] Furthermore, the top clip structure is an elastic top clip structure.

[0011] Furthermore, the plastic buckle of the backrest lock and the end that engages with the unlocking buckle are symmetrically provided with longitudinal grooves on both sides.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention eliminates the gap between the plastic buckle and the unlocking handle by adding a top-mounted clip structure. During bumpy driving, the two will no longer collide due to the gap, effectively avoiding Y-axis impact noise and improving the comfort of the car seat. This structure only adds a top-mounted clip to the original plastic buckle, eliminating the need for additional parts, reducing component procurement costs and assembly processes, and saving assembly costs. The ingenious design of the top-mounted clip structure, through reasonable size control, eliminates the gap while ensuring a small contact width with the handle, so that the unlocking force of the handle is not affected and there is no unlocking jamming, maintaining the stability and convenience of the backrest lock unlocking function. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the plastic buckle described in this utility model;

[0015] Figure 2 This is a structural diagram of the unlocking handle described in this utility model;

[0016] Figure 3 This is a schematic diagram showing the connection between the plastic buckle and the unlocking handle described in this utility model;

[0017] Figure 4 This is an assembly diagram of the plastic buckle structure of the backrest lock that can eliminate wobbling gaps according to this utility model;

[0018] Figure 5 This is a side view of the plastic buckle described in this utility model.

[0019] In the diagram, 1-backrest frame assembly, 2-plastic buckle, 3-unlocking handle, 4-backrest lock unlocking wire, 5-backrest lock assembly, 21-slot, 22-top clip structure, 23-longitudinal groove, 24-hollow part. Detailed Implementation

[0020] To explain the technical content, objectives, and effects of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings. In the description of these embodiments, it should be understood that terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing these embodiments and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] like Figure 1-5 As shown,

[0022] A backrest lock plastic buckle structure that can eliminate wobbling gaps includes a backrest frame assembly 1, a plastic buckle 2, an unlocking handle 3, a backrest lock unlocking wire 4, and a backrest lock assembly 5. The unlocking handle 3 is installed on the upper part of the backrest frame assembly 1, and the backrest lock assembly 5 is installed on the side of the backrest frame assembly 1. The backrest lock plastic buckle 2 is engaged with the unlocking handle 3. The backrest lock plastic buckle 2 is constructed as an L-shaped hollow structure. One end of the backrest lock unlocking wire 4 is connected to the backrest lock assembly 5, and the other end of the backrest lock unlocking wire 4 passes through the hollow part of the plastic buckle 2 and is engaged in the plastic buckle 2. A groove 21 is provided on the outside of the end of the plastic buckle 2 that is engaged with the unlocking handle 3. Top locking structures 22 are symmetrically arranged at both ends of one side of the groove 21.

[0023] During assembly, the unlocking handle 3 and the backrest frame assembly 1 are first pre-assembled together with bolts; then, the backrest lock plastic buckle 2 is snapped together with the unlocking handle 3; finally, the backrest lock unlocking wire 4 is passed through the plastic buckle 2 and connected to the unlocking handle 3, completing the assembly of the entire backrest lock system. In this process, the plastic buckle with the added top clip structure 22 can smoothly cooperate with other components, and the presence of the top clip structure 22 does not affect the overall assembly process. By adding the top clip structure 22, the gap between the plastic buckle 2 and the unlocking handle 3 is eliminated. During bumpy driving, the two will no longer collide due to the gap, effectively avoiding the problem of abnormal noise from Y-axis impacts and improving the comfort of the car seat. This structure only adds a top clip structure to the original plastic buckle, without adding extra parts, reducing component procurement costs and assembly procedures, and saving assembly costs. The top clip structure is cleverly designed; through reasonable size control, while eliminating the gap, it ensures a small contact width with the handle, so that the unlocking force of the handle is not affected and there is no unlocking jamming, maintaining the stability and convenience of the backrest lock unlocking function.

[0024] As a preferred embodiment of the above-described embodiments, the top clip structure 22 is configured as an arc-shaped wing structure. This arc-shaped wing structure can more effectively eliminate the gap between the plastic buckle 2 and the unlocking handle 3, providing a more effective impact buffer and thus preventing abnormal noise. The top clip structure 22 can also be configured as a zigzag wing structure, such as... Figure 5 As shown.

[0025] As a preferred embodiment of the above implementation, the top clamp structure 22 is an elastic top clamp structure. Since the top clamp structure is made of elastic material, it can better buffer the impact and thus better avoid the generation of abnormal noise.

[0026] As a preferred embodiment of the above implementation, the end of the backrest lock plastic buckle 2 that engages with the unlocking handle 3 has symmetrical grooves 23 longitudinally arranged on both sides, such as... Figure 1 and Figure 5 As shown, by setting symmetrical grooves 23, the front end of the locking plastic buckle 2 can be compressed during assembly, making it easier to insert into the unlocking handle 3. After being restored, the plastic buckle 2 and the unlocking handle 3 can be easily engaged.

[0027] Although the present invention has been described in detail above with specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A plastic snap-on structure for a backrest lock that eliminates wobbling gaps, characterized in that: The backrest includes a backrest frame assembly, a plastic buckle, an unlocking handle, a backrest lock unlocking wire, and a backrest lock assembly. The unlocking handle is installed on the upper part of the backrest frame assembly, and the backrest lock assembly is installed on the side of the backrest frame assembly. The plastic buckle of the backrest lock engages with the unlocking handle. The plastic buckle of the backrest lock is constructed into an L-shaped hollow structure. One end of the backrest lock unlocking wire is connected to the backrest lock assembly, and the other end of the backrest lock unlocking wire passes through the hollow part of the plastic buckle and engages in the plastic buckle. A groove is provided on the outside of the end of the plastic buckle that engages with the unlocking handle, and top locking structures are symmetrically arranged at both ends of one side of the groove.

2. The backrest lock plastic buckle structure for eliminating wobbling gaps according to claim 1, characterized in that: The top card structure is constructed as an arc-shaped wing structure.

3. The backrest lock plastic buckle structure for eliminating wobbling gaps according to claim 1, characterized in that: The top card structure is constructed as a zigzag wing-edge structure.

4. The backrest lock plastic buckle structure for eliminating wobbling gaps according to claim 1, characterized in that: The top card structure is an elastic top card structure.

5. The backrest lock plastic buckle structure for eliminating wobbling gaps according to claim 1, characterized in that: The plastic buckle of the backrest lock has symmetrical grooves on both sides of the end that engages with the unlocking buckle.

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