A type of anti-detachment buckle

Abstract

This utility model relates to the technical field of automotive parts and discloses an anti-detachment buckle, including a sheet metal snap-fit ​​part, a limiting part, and a connecting part. A buffer structure is provided between the sheet metal snap-fit ​​part and the limiting part. The sheet metal snap-fit ​​part, the limiting part, the connecting part, and the buffer structure are integrally connected by injection molding. The connecting part includes a connector, a connecting hook, and a transition section. The connector and the sheet metal snap-fit ​​part are hollow structures. This utility model, by setting an anti-detachment buckle at the connection between the automotive sheet metal part and the A-pillar, ensures that the sheet metal part and the A-pillar always maintain a stable relative position through the elastic locking or mechanical limiting structure of the buckle, avoiding loosening or displacement caused by external forces such as vibration and impact, and providing a stable placement space for the airbag.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive parts, specifically to an anti-detachment buckle. Background Technology

[0002] In the automotive body structure, the A-pillar is a key supporting component connecting the roof and the front compartment. It needs to be fitted with sheet metal parts such as side panels to form a complete body appearance. At the same time, the space between the A-pillar and the sheet metal parts is often used to house airbags. As an important passive safety device, the airbag needs to deploy quickly and stably when the vehicle is involved in a collision to cushion the impact on the occupants. The reliability of its deployment process is directly related to the safety protection effect.

[0003] In this assembly scenario, the stability of the connection between the sheet metal parts and the A-pillar not only affects the vehicle body rigidity, sealing, and appearance integrity, but is also closely related to the normal operation of the airbags. Traditional connection structures, relying solely on simple snap-fits or bolts, are prone to relative loosening or displacement between the sheet metal parts and the A-pillar under conditions of long-term vehicle vibration, temperature changes, or minor collisions. This loosening can cause two problems: firstly, changes in the gap may lead to friction between the sheet metal parts and the A-pillar, generating abnormal noise and affecting the driving experience; secondly, and more importantly, if the loose connection causes abnormal deformation of the airbag's placement space, or if the sheet metal parts experience unexpected displacement due to instability during airbag deployment, it may interfere with the airbag's deployment path, deployment speed, and even deployment shape. In severe cases, this can weaken the protective effect of the airbag and pose a potential risk to the safety of occupants. Therefore, an anti-detachment clip needs to be designed to solve these problems. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an anti-detachment buckle, comprising a sheet metal snap-fit ​​part, a limiting part, and a connecting part. A buffer structure is provided between the sheet metal snap-fit ​​part and the limiting part. The sheet metal snap-fit ​​part, the limiting part, the connecting part, and the buffer structure are integrally connected by injection molding. The connecting part includes a connector, a connecting hook, and a transition section. The connector is a first hollow structure, and the sheet metal snap-fit ​​part is a second hollow structure. The hollow structure of the connector and the sheet metal snap-fit ​​part is designed to prevent installation deformation and to protect the two components. The anti-detachment buckle is connected to the A-pillar and then to the sheet metal parts on the car, achieving a connection and anti-detachment effect.

[0005] A further improvement of this utility model is that the bottom of the connecting tail hook has an arc-shaped structure.

[0006] A further improvement of this utility model is that the bottom of the connecting tail hook is provided with a recessed structure. The purpose of providing the tail with the recessed structure is to alleviate the impact force at the bottom, thereby playing a role in protecting the anti-detachment buckle.

[0007] A further improvement of this utility model is that the sheet metal snap-fit ​​part includes a hollow connector and connecting buckles disposed on both sides of the side wall of the connector.

[0008] A further improvement of this utility model is that the two connecting buckles are identical in shape and are set in a mirror-like manner. The two connecting buckles are used to hold the sheet metal parts in place, and fixing the sheet metal parts is to prevent the sheet metal parts from moving after installation.

[0009] A further improvement of this utility model is that the limiting part is a solid flat plate structure, and the cross-section of the limiting part is a convex shape, which can better engage and connect with the mounting pillar of the car.

[0010] A further improvement of this utility model is that the buffer structure is bowl-shaped, which protects the automotive sheet metal parts. When the sheet metal snap-fit ​​part of the anti-detachment buckle is engaged with the automotive sheet metal parts, the buffer structure can separate the automotive sheet metal parts from the limiting part connecting the A-pillar, thus protecting the automotive sheet metal parts and the limiting part at the same time.

[0011] A further improvement of this utility model is that the transition section is a vertical connector. The transition section is designed so that after the car is hit by a violent impact, the anti-detachment buckle can be released from the A-pillar, thereby freeing up space for the airbag.

[0012] The beneficial effects of this utility model are:

[0013] This invention features anti-detachment buckles at the connection between the automotive sheet metal parts and the A-pillar (the area between which the airbag is located). Through the elastic locking or mechanical limiting structure of the buckles, it ensures that the sheet metal parts and the A-pillar maintain a stable relative position, preventing loosening or displacement caused by external forces such as vibration and impact. This provides a stable placement space for the airbag; it also restricts unintended movement of the sheet metal parts, ensuring that they maintain a preset posture when the airbag deploys, without interfering with the airbag's deployment path and process, thus guaranteeing that the airbag performs its protective function as designed. While enhancing connection tightness, it also considers ease of assembly, improving the overall structural reliability and durability. Therefore, while ensuring the basic performance of the vehicle body, it provides the necessary structural support for the stable operation of the airbag. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a side view of the structure of this utility model.

[0016] Figure 3 This is a top view of the structure of this utility model.

[0017] Figure 4 This is a side view of the present invention.

[0018] Reference numerals: 1-Sheet metal snap-fit ​​part, 2-Limiting part, 3-Connecting part, 4-Buffer structure, 5-Connecting piece, 6-Transition section, 7-First hollow structure, 8-Second hollow structure, 9-Arc-shaped structure, 10-Recessed structure, 11-Connecting head, 12-Connecting buckle, 13-Connecting tail hook. Detailed Implementation

[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] This utility model provides an anti-detachment buckle, including a sheet metal snap-fit ​​part 1, a limiting part 2, and a connecting part 3. A buffer structure 4 is provided between the sheet metal snap-fit ​​part 1 and the limiting part 2. The sheet metal snap-fit ​​part 1, the limiting part 2, the connecting part 3, and the buffer structure 4 are integrally connected by injection molding. The connecting part 3 includes a connector 5, a connecting hook 13, and a transition section 6. The connector 5 is a first hollow structure 7, and the sheet metal snap-fit ​​part 1 is a second hollow structure 8. The hollow structure of the connector 5 and the sheet metal snap-fit ​​part 1 is designed to prevent installation deformation and to protect the two parts. The anti-detachment buckle is connected to the A-pillar and then to the sheet metal parts on the car to achieve a connection and anti-detachment effect. When the car suffers a huge impact with a force exceeding 400N, the anti-detachment buckle will separate from the A-pillar and hook onto the A-pillar through the connecting hook 13, thereby allowing the airbag to be deployed from below or to the side of the A-pillar, thus protecting the human body.

[0021] The bottom of the connecting tail hook 13 has an arc-shaped structure 9; the bottom of the connecting tail hook 13 is provided with a recessed structure 10. The recessed structure 10 is provided to the connecting tail hook 13 to alleviate and reduce the impact force when there is an impact force at the bottom, thereby protecting the anti-detachment buckle and preventing it from breaking. The transition section 6 will only break if it exceeds 400N; the sheet metal snap-fit ​​part 1 includes a hollow connector 11 and connecting buckles 12 provided on both sides of the side wall of the connector 11; the two connecting buckles 12 are the same shape and are set in a mirror manner. The two connecting buckles 12 are used to snap the sheet metal parts and fix the sheet metal parts to prevent the sheet metal parts from moving after installation; the limiting part 2 is a solid flat plate structure, and the cross-section of the limiting part 2 is a convex structure, which can better engage and connect with the mounting pillar of the car, making it more stable and firm, and less prone to deformation and displacement.

[0022] The buffer structure 4 is bowl-shaped, which protects the automotive sheet metal parts. When the sheet metal latching part 1 of the anti-detachment buckle is engaged with the automotive sheet metal parts, the buffer structure 4 can separate the automotive sheet metal parts from the connecting A-pillar, protecting both the automotive sheet metal parts and the limiting part 2. The transition section 6 is a vertical connector. The shape of the transition section 6 is designed so that after the car receives a violent impact, the transition section 6 can release the anti-detachment buckle from the connecting A-pillar, thereby providing space for the airbag.

[0023] It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. An anti-detachment buckle, characterized in that: It includes a sheet metal snap-fit ​​part, a limiting part, and a connecting part. A buffer structure is provided between the sheet metal snap-fit ​​part and the limiting part. The sheet metal snap-fit ​​part, the limiting part, the connecting part, and the buffer structure are integrally connected by injection molding. The connecting part includes a connector, a connecting tail hook, and a transition section. The connector is a first hollow structure, and the sheet metal snap-fit ​​part is a second hollow structure.

2. The anti-detachment buckle according to claim 1, characterized in that: The bottom of the connecting tail hook has an arc-shaped structure.

3. The anti-detachment buckle according to claim 2, characterized in that: The bottom of the connecting tail hook has a recessed structure.

4. The anti-detachment buckle according to claim 1, characterized in that: The sheet metal snap-fit ​​part includes a hollow connector and connecting buckles disposed on both sides of the side wall of the connector.

5. The anti-detachment buckle according to claim 4, characterized in that: The two connecting buckles are identical in shape and are mirror-finished.

6. The anti-detachment buckle according to claim 1, characterized in that: The limiting part is a solid flat plate structure.

7. The anti-detachment buckle according to claim 6, characterized in that: The cross-section of the limiting part has a convex shape.

8. The anti-detachment buckle according to claim 1, characterized in that: The buffer structure is bowl-shaped.

9. The anti-detachment buckle according to claim 7, characterized in that: The transition section is a vertical connector.

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