Anti-loose vehicle lamp connecting bolt

Abstract

The utility model discloses a kind of anti-loose car light connecting bolt, belong to fastener technical field;The utility model aims at solving the problem that existing car light bolt is easy to loosen under vibration, or need to cooperate washer, anti-loose glue and other additional components lead to complex structure, assembly is inconvenient, technical scheme includes bolt body, bolt body is provided with anti-loose mechanism;Anti-loose mechanism includes, fixed on the outer thread of bolt body, and located the flange face of bolt body head bottom end;Groove is opened on the surface of outer thread, anti-skid tooth is arranged on the flange face, and flange face is set in the root of outer thread around.This utility model is integrated groove and anti-skid tooth on bolt, form double locking structure, when locking, anti-skid tooth is embedded and is connected to the surface of component and form mechanical engagement, groove increases friction force of thread pair, without additional components, it can realize excellent anti-vibration and anti-loose performance, with the advantages of simple structure, reliable connection, easy assembly.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to anti-loosening vehicle headlight connecting bolts. Background Technology

[0002] Vehicle lighting, such as headlights and taillights, is a critical component for ensuring driving safety. To ensure that the illumination angle and range of the lights meet regulatory requirements and remain stable, they need to be reliably secured to the vehicle body structure. Bolts, as a universal and effective connecting component, are widely used in the installation and securing of vehicle lights.

[0003] However, vehicles are constantly subjected to vibrations from engine operation and road bumps during driving. In this high-frequency, continuous vibration environment, ordinary connecting bolts rely solely on the friction between the threads to provide locking force. Over time, this friction may be insufficient to resist the instantaneous impacts and torques caused by vibrations, leading to slight reverse rotation of the bolts and gradual loosening.

[0004] To address the issue of bolt loosening due to vibration, existing technologies typically employ additional anti-loosening components, such as spring washers, locking washers, or applying anti-loosening adhesive to the threads. While these methods improve anti-loosening effectiveness to some extent, they increase the number of components and procurement costs, complicate the assembly process, and reduce production efficiency. Furthermore, these separate anti-loosening components pose a risk of being omitted or incorrectly installed, thus affecting the final connection reliability. Therefore, developing a bolt with a simple structure and robust anti-loosening function, eliminating the need for additional components, is crucial for improving the installation quality and long-term reliability of automotive lights.

[0005] Therefore, this utility model proposes an anti-loosening vehicle headlight connecting bolt to address the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a non-loosening vehicle headlight connecting bolt, which aims to improve the problem that the existing vehicle headlight connecting bolts are prone to loosening under vibration, resulting in unreliable connections.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an anti-loosening vehicle headlight connecting bolt, comprising a bolt body; the bolt body is provided with an anti-loosening mechanism.

[0008] Specifically, the anti-loosening mechanism includes an external thread fixedly connected to the bolt body, and a flange face formed at the bottom end of the bolt body head.

[0009] The external thread has a groove on its threaded surface, and the flange surface has anti-slip teeth.

[0010] Furthermore, the external thread and the flange face are combined in the following spatial relationship: the flange face is arranged around the root of the external thread, thereby compactly integrating the groove for thread friction locking and the anti-slip teeth for contact surface engagement locking onto the same bolt body.

[0011] Preferably, the grooves are distributed in a ring array along the circumferential direction of the external thread.

[0012] Preferably, the anti-slip teeth are distributed in a ring array along the circumferential direction of the flange surface.

[0013] Preferably, the anti-slip teeth are serrated structures protruding from the flange surface, so as to be able to embed into the surface of the connected parts when tightened.

[0014] Preferably, in order to increase friction while ensuring thread strength as much as possible, the groove is provided at the top of the thread teeth of the external thread.

[0015] Preferably, as a specific arrangement, the anti-slip teeth are arranged radially on the flange surface.

[0016] Preferably, in order to provide a stable and sufficiently large contact surface to support the anti-slip teeth, the flange face is an annular flange face.

[0017] Preferably, as a high-strength manufacturing method, the anti-loosening mechanism is integrally formed with the bolt body.

[0018] This utility model has the following beneficial effects: 1. In this utility model, by setting anti-slip teeth on the flange surface of the bolt body and opening grooves on the external thread, the problem of poor effectiveness and unstable connection caused by ordinary bolts relying solely on friction to prevent loosening under vehicle vibration environment is solved. The present invention achieves double locking and significantly improves the technical effect of vibration resistance and anti-loosening performance.

[0019] 2. In this utility model, by setting anti-slip teeth in a ring array on the flange surface of the bolt, the problem of the smooth contact surface between the bolt head and the connected parts, which is prone to relative sliding and loosening under vibration, is solved. The anti-slip teeth can be embedded into the surface of the connected parts when tightening, forming a strong mechanical meshing resistance and effectively preventing the bolt from rotating in the opposite direction.

[0020] 3. In this utility model, by integrating the anti-loosening mechanism with the bolt body into a single molding design, the problem of the existing technology that often requires the use of additional components such as spring washers, lock nuts or thread sealant to achieve anti-loosening is solved, which leads to complicated assembly steps, high costs and easy loss of parts. The result is a simple and compact structure, convenient production, high assembly efficiency and strong connection reliability. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the anti-loosening vehicle headlight connecting bolt proposed in this utility model; Figure 2 This is a schematic diagram of the bolt body of the anti-loosening vehicle headlight connecting bolt proposed in this utility model. Figure 3 This is a schematic diagram of the external thread portion of the anti-loosening vehicle headlight connecting bolt proposed in this utility model. Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0022] Legend: 1. Bolt body; 2. Anti-loosening mechanism; 201. External thread; 202. Groove; 203. Flange face; 204. Anti-slip teeth. Detailed Implementation

[0023] Reference Figures 1 to 4 This utility model provides a vehicle headlight connecting bolt that prevents loosening, aiming to solve the problem in the prior art that vehicle headlight connecting bolts are prone to loosening under vibration, resulting in unreliable connections.

[0024] The anti-loosening headlight connecting bolt includes a bolt body 1 and an anti-loosening mechanism 2 integrally formed with the bolt body 1. The bolt body 1 serves as the main body for bearing and operation of the entire bolt, and the anti-loosening mechanism 2 is used to resist vibration and prevent loosening after the bolt is tightened.

[0025] The anti-loosening mechanism 2 includes an external thread 201 fixedly connected to the bolt body 1. A groove 202 is provided on the thread surface of the external thread 201. The anti-loosening mechanism 2 also includes a flange face 203 formed at the bottom of the head of the bolt body 1. The flange face 203 is arranged around the root of the external thread 201. Anti-slip teeth 204 are provided on the flange face 203. The external thread 201, the groove 202, the flange face 203 and the anti-slip teeth 204 together constitute the anti-loosening mechanism 2. Furthermore, the anti-loosening mechanism 2 is integrally formed with the bolt body 1 to enhance the overall structural strength and connection reliability.

[0026] Specifically, the external thread 201 is used to engage and fasten with the threaded hole of the vehicle headlight component.

[0027] The groove 202 is configured such that the groove 202 is distributed in a ring array along the circumferential direction of the external thread 201, and the groove 202 is located at the thread tooth tip of the external thread 201. This structure increases the frictional resistance between the thread pairs when the external thread 201 is screwed in.

[0028] The flange face 203 is configured as an annular flange face, which is used to abut and press against the mounting surface of the vehicle lamp component when the bolts are tightened.

[0029] The anti-slip teeth 204 are arranged in a ring array along the circumferential direction of the flange surface 203, and are radially arranged on the flange surface 203. The structure of the anti-slip teeth 204 is a serrated structure protruding from the surface of the flange surface 203. When the flange surface 203 is pressed, the structure is embedded in the mounting surface of the vehicle lamp component, thereby providing resistance against the bolts to loosen by reverse rotation.

[0030] In a preferred embodiment, to increase the thread friction more uniformly, the grooves 202 are distributed in a ring array along the circumference of the external thread 201. Simultaneously, to effectively increase friction without significantly weakening the thread's own strength, the grooves 202 are preferably located at the thread crests of the external thread 201. In another preferred embodiment, to provide a uniform and stable anti-loosening force during locking, the anti-slip teeth 204 are distributed in a ring array along the circumferential direction of the flange surface 203, and the anti-slip teeth 204 are arranged radially on the flange surface 203. Furthermore, to maximize the embedding effect and provide strong anti-reverse capability, the anti-slip teeth 204 are specifically structured as serrated structures protruding from the flange face 203. As a preferred specification for the structure of flange face 203, the specific shape of flange face 203 is an annular flange face. This structure provides a sufficiently large contact area to support the anti-slip teeth 204. As the preferred option for the overall manufacturing process, in order to ensure the highest structural strength and force transmission efficiency, the anti-loosening mechanism 2 is integrally formed with the bolt body 1.

[0031] Working principle: When the bolt body 1 is rotated, the anti-loosening mechanism 2, which is integrally formed with the bolt body 1, rotates synchronously. The external thread 201 on it is screwed into the corresponding threaded hole. When the flange face 203 located at the bottom end of the head of the bolt body 1 contacts the surface of the connected part, the continued application of torque causes the anti-slip teeth 204 on the flange face 203 to embed into the surface of the connected part.

[0032] When the bolt tends to loosen under vibration conditions, firstly, the mechanical engagement and high friction between the anti-slip teeth 204 on the flange face 203 and the surface of the connected parts will generate a huge anti-loosening resistance. Secondly, the groove 202 opened on the thread surface of the external thread 201 also increases the friction between the thread pairs. Through the synergistic effect of the dual structure of the anti-slip teeth 204 and the groove 202, the vibration resistance and anti-loosening performance of the bolt are greatly improved.

Claims

1. Anti-loosening headlight connection bolts, including: The bolt body (1) is characterized in that an external thread (201) is fixedly connected to the bolt body (1), a groove (202) is provided on the thread surface of the external thread (201), the head bottom end of the bolt body (1) is formed as a flange face (203), the flange face (203) is arranged around the root of the external thread (201), and anti-slip teeth (204) are provided on the flange face (203). The external thread (201), the groove (202), the flange face (203), and the anti-slip teeth (204) together constitute the anti-loosening mechanism (2).

2. The anti-loosening vehicle headlight connecting bolt according to claim 1, characterized in that, The grooves (202) are distributed in a ring array along the circumferential direction of the external thread (201).

3. The anti-loosening headlight connecting bolt according to claim 1, characterized in that, The anti-slip teeth (204) are distributed in a ring array along the circumferential direction of the flange surface (203).

4. The anti-loosening headlight connecting bolt according to claim 1, characterized in that, The anti-slip teeth (204) are serrated structures protruding from the surface of the flange face (203).

5. The anti-loosening headlight connecting bolt according to claim 1, characterized in that, The groove (202) is provided at the top of the thread teeth of the external thread (201).

6. The anti-loosening headlight connecting bolt according to claim 3, characterized in that, The anti-slip teeth (204) are arranged radially on the flange surface (203).

7. The anti-loosening vehicle headlight connecting bolt according to claim 1, characterized in that, The flange face (203) is an annular flange face.

8. The anti-loosening vehicle headlight connecting bolt according to claim 1, characterized in that, The anti-loosening mechanism (2) is integrally formed with the bolt body (1).

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