Anti-loosening automobile grounding bolt

Abstract

The utility model discloses an anti-loosening automobile grounding bolt, which relates to the technical field of grounding bolts, solves the problems of inconvenience in connection of a grounding lead of an existing device and low firmness of connection of the device, and adopts the following scheme that a threaded hole A is formed in the top surface of a bolt rod A. The anti-loosening automobile grounding bolt comprises a bolt rod A and a bolt rod B, through the arrangement of the threaded hole A, the bolt rod B and the wiring hole, a grounding wire is placed at the bottom of the threaded hole A through the wiring hole, then the bolt rod B is rotated through the hexagonal groove to enter the threaded hole A, the bolt rod B extrudes and fixes the grounding wire, wiring is simple and convenient, meanwhile, through the arrangement of the threaded hole B, the screw rod and the pressing block, the screw rod is rotated through the plum blossom groove, and wiring is convenient. And the screw rod drives the pressing block to move downwards, so that the shell of the part is pressed, the contact and connectivity of the whole device and the part are improved, the connection firmness and stability of the bolt rod A are improved, and the use effect and safety of the device are improved.

Description

Technical Field

[0001] This utility model relates to the field of grounding bolt technology, specifically to an anti-loosening automotive grounding bolt. Background Technology

[0002] A grounding bolt is a bolt used to connect and fasten the negative terminal wiring harness in an automotive electrical system to the vehicle body. It plays an important role in the automotive circuit. Because vehicles vibrate during use, the bolt is prone to loosening after prolonged use, which can affect the electrical connection.

[0003] A search revealed that patent application CN211924685U discloses a grounding bolt, which includes a screw with a first external thread. When the first external thread of the bolt is screwed into the nut, the projection profile of the first external thread along the length of the screw is approximately polygonal, and the maximum vertical distance from the crest of the first external thread to the axis of the screw is greater than the radius of the root of the nut's internal thread. Therefore, the first external thread can grind the root of the nut's thread, remove the surface electrophoresis and paint layers, and cause the thread profiles of the bolt and nut to interfere with each other, ensuring good conductive contact between the two and reliable grounding performance.

[0004] However, due to the design of the screw and head, it is inconvenient to connect the grounding wire to the screw after connecting the screw to the car body, making it inconvenient to use. At the same time, the car will vibrate during driving, and the screw is prone to loosening after long-term use, resulting in an unstable connection between the screw and the body, poor conductivity, affecting the use of other electrical appliances in the car, and low safety.

[0005] Therefore, we propose an anti-loosening automotive grounding bolt. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an anti-loosening automotive grounding bolt, which solves the problems of inconvenient grounding wire connection and low connection strength of existing devices.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: an anti-loosening automotive grounding bolt, including a nut, wherein a bolt rod A is fixedly installed on the bottom surface of the nut;

[0008] The top surface of the bolt rod A is provided with a threaded hole A, and the outer wall of the nut is provided with a wiring hole that communicates with the threaded hole A. A bolt rod B of the same specification is assembled in the threaded hole A. A top cover of the same specification is fixedly installed at the top of the bolt rod B. A hexagonal groove is provided on the top surface of the top cover. An evenly distributed anti-slip groove is provided at the bottom of the bolt rod B.

[0009] The top surface of the top cover has three sets of threaded holes B with opposite positions. A screw of the same specification is installed in the threaded hole B. A pressure block is fixedly installed at the bottom end of the screw. A fixing block of the same specification is fixedly installed at the top end of the screw. A plum blossom groove is opened on the top surface of the fixing block. An anti-slip rubber pad is installed on the bottom surface of the pressure block.

[0010] Preferably, the nut is hexagonal prism-shaped, which facilitates rotating the bolt rod A into the mounting hole on the housing.

[0011] Preferably, the bottom surface of the nut is fixedly equipped with two sets of opposite scraping teeth, which can scrape off the coating on the outer shell, thereby improving the electrical conductivity between the device and the outer shell.

[0012] Preferably, the bottom surface of the top cover is fitted with a sealing rubber gasket of the same specification, which can improve the sealing between the top cover and the nut and prevent rainwater from entering the threaded hole A and affecting the grounding wire's performance.

[0013] Preferably, a grounding wire of the same specification is installed in the wiring hole, and sealant is installed between the grounding wire and the wiring hole, which can improve the connection and stability between the grounding wire and the nut.

[0014] Preferably, the rotation direction of the screw is opposite to the rotation direction of the bolt rod A, which can improve the connection between the device as a whole and the housing.

[0015] 1. This anti-loosening automotive grounding bolt, through the setting of threaded hole A, bolt rod B and wiring hole, allows the grounding wire to be placed at the bottom of threaded hole A through wiring hole, and then the bolt rod B is rotated into threaded hole A through hexagonal groove, and the bolt rod B compresses and fixes the grounding wire, making wiring simple and convenient.

[0016] 2. Simultaneously, through the setting of threaded hole B, screw and pressure block, the screw is rotated through the plum blossom groove, and the screw drives the pressure block to move downward, thereby pressing against the outer shell of the part, improving the contact and connection between the whole device and the part, thereby improving the firmness and stability of the bolt rod A connection, and improving the use effect and safety of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of bolt rod A of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the nut of this utility model;

[0020] Figure 4This is a schematic diagram of the structure of the fixing block of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the threaded rod B of this utility model.

[0022] In the diagram: 1. Nut; 2. Bolt rod A; 3. Threaded hole A; 4. Wiring hole; 5. Bolt rod B; 6. Top cover; 7. Anti-slip groove; 8. Threaded hole B; 9. Screw; 10. Fixing block; 11. Pressure block; 12. Hexagonal groove; 13. Torx groove; 14. Scraper teeth. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: As Figure 1-5 As shown: The top surface of the bolt rod A2 has a threaded hole A3, and the outer wall of the nut 1 has a wiring hole 4 that communicates with the threaded hole A3. A bolt rod B5 of the same specification is installed in the threaded hole A3. A top cover 6 of the same specification is fixedly installed on the top of the bolt rod B5. The top surface of the top cover 6 has a hexagonal groove 12, and the bottom end of the bolt rod B5 has evenly distributed anti-slip grooves 7. Through the arrangement of the threaded hole A3, the bolt rod B5, and the wiring hole 4, the grounding wire is placed at the bottom of the threaded hole A3 through the wiring hole 4. Then, the bolt rod B5 is rotated into the threaded hole A3 through the hexagonal groove 12. The bolt rod B5 compresses and fixes the grounding wire, making the wiring simple and convenient.

[0025] Example 2: Figure 2-5 As shown: The top surface of the top cover 6 has three sets of threaded holes B8 with opposite positions. A screw 9 of the same specification is installed in the threaded hole B8. A pressure block 11 is fixedly installed at the bottom end of the screw 9. A fixing block 10 of the same specification is fixedly installed at the top end of the screw 9. A plum blossom groove 13 is opened on the top surface of the fixing block 10. An anti-slip rubber pad is installed on the bottom surface of the pressure block 11. Through the setting of the threaded hole B8, screw 9 and pressure block 11, the screw 9 is rotated through the plum blossom groove 13. The screw 9 drives the pressure block 11 to move downward, thereby pressing against the outer shell of the part, improving the contact and connection between the device and the part, thereby improving the firmness and stability of the bolt rod A2 connection, and improving the use effect and safety of the device.

[0026] Example 3: As Figure 2-3As shown: The bottom surface of the top cover 6 is equipped with a sealing rubber gasket of the same specification, which can improve the sealing between the top cover 6 and the nut 1 and prevent rainwater from entering the threaded hole A3 and affecting the grounding wire's performance.

[0027] The working principle and usage process of this utility model are as follows: When the device needs to work, first rotate the bolt rod A2 into the outer shell of the part, then place the grounding wire at the bottom of the threaded hole A3 through the wiring hole 4, and then rotate the bolt rod B5 into the threaded hole A3 through the hexagonal groove 12. The bolt rod B5 presses and fixes the grounding wire, making the wiring simple and convenient. Rotate the screw rod 9 through the plum blossom groove 13, and the screw rod 9 drives the pressure block 11 to move downward, thereby pressing against the outer shell of the part, improving the overall contact and connection between the device and the part, thereby improving the firmness and stability of the bolt rod A2 connection, and improving the use effect and safety of the device.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An anti-loosening automotive grounding bolt, comprising a nut (1), wherein a bolt rod A (2) is fixedly installed on the bottom surface of the nut (1); Its features are: The top surface of the bolt rod A (2) is provided with a threaded hole A (3), and the outer wall of the nut (1) is provided with a wiring hole (4) that communicates with the threaded hole A (3). The threaded hole A (3) is fitted with a bolt rod B (5) of the same specification. The top of the bolt rod B (5) is fixedly installed with a top cover (6) of the same specification. The top surface of the top cover (6) is provided with a hexagonal groove (12), and the bottom end of the bolt rod B (5) is provided with uniformly distributed anti-slip grooves (7). The top surface of the top cover (6) is provided with three sets of threaded holes B (8) in opposite positions. The threaded holes B (8) are equipped with screws (9) of the same specifications. A pressure block (11) is fixedly installed at the bottom end of the screw (9). A fixing block (10) of the same specifications is fixedly installed at the top end of the screw (9). A plum blossom groove (13) is provided on the top surface of the fixing block (10). An anti-slip rubber pad is installed on the bottom surface of the pressure block (11).

2. The anti-loosening automotive grounding bolt according to claim 1, characterized in that: The nut (1) is hexagonal prism-shaped.

3. The anti-loosening automotive grounding bolt according to claim 1, characterized in that: The bottom surface of the nut (1) is fixedly equipped with two sets of opposite scraping teeth (14).

4. The anti-loosening automotive grounding bolt according to claim 1, characterized in that: The bottom surface of the top cover (6) is fitted with a sealing rubber gasket of the appropriate specifications.

5. The anti-loosening automotive grounding bolt according to claim 1, characterized in that: The wiring hole (4) is fitted with a grounding wire of the same specification, and a sealant is fitted between the grounding wire and the wiring hole (4).

6. The anti-loosening automotive grounding bolt according to claim 1, characterized in that: The rotation direction of the screw (9) is opposite to the rotation direction of the bolt rod A (2).

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