Automobile fastening bolt

Abstract

The utility model provides an automobile fastening bolt which comprises a first screw rod and a bolt head, and the bolt head is fixed at one end of the first screw rod. One end of the second screw rod is fixed to the end, away from the bolt head, of the first screw rod, and the diameter of the second screw rod is smaller than that of the first screw rod; the nut assembly comprises a first nut and a second nut, the first nut is in threaded connection to the second screw, one side face of the first nut abuts against the end face of the first screw, and an abutting groove is formed in the other side face of the first nut; the second nut is in bolted connection with the second screw rod and abuts against the interior of the abutting groove of the first nut; the outer diameter of the second nut is smaller than that of the first nut. When the second nut is in bolted connection with the second screw rod and abuts against the interior of the abutting groove, movement of the first nut in the threaded connection direction can be effectively limited, and therefore the risk that the first nut is loosened due to vibration or external force is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology, and in particular to an automotive fastening bolt. Background Technology

[0002] With economic development, automobiles have become an indispensable means of transportation in people's lives. The production, sales and after-sales service of automobiles have also developed rapidly. Automobile wheels and rims are important components of automobile parts and are related to the safety of automobile use. The connection between automobile wheels and rims is achieved by bolts, so the bolts need to have good fixing properties.

[0003] Currently, most existing bolts have the drawback of being inconvenient to tighten and reinforce, which can lead to loosening during vehicle use, thus affecting driving safety. In addition, the nuts may wobble during vehicle operation, which greatly increases the safety and inconvenience of use. Utility Model Content

[0004] To reduce the possibility of bolts and nuts loosening during driving, this application provides an automotive fastening bolt.

[0005] This application provides a technical solution for an automotive fastening bolt, which includes the following:

[0006] An automotive fastening bolt includes a first screw and a bolt head, with the bolt head fixed to one end of the first screw; characterized in that it further includes a second screw and a nut assembly, one end of the second screw being fixed to the end of the first screw away from the bolt head, and the diameter of the second screw being smaller than that of the first screw; the nut assembly includes a first nut and a second nut, the first nut being threaded onto the second screw, with one side abutting against the end face of the first screw, and a tightening groove formed on the other side; the second nut being bolted onto the second screw and abutting against the tightening groove of the first nut; the outer diameter of the second nut being smaller than that of the first nut.

[0007] Through the above technical solution, the first nut is threaded onto the second screw and abuts tightly against the end face of the first screw, forming a stable foundation; when the second nut is bolted onto the second screw and abuts against the tightening groove, it can effectively restrict the movement of the first nut in the threaded connection direction, thereby greatly reducing the risk of the first nut loosening due to vibration or external force.

[0008] Preferably, a limiting plate is installed on the second nut, a through groove is formed on the outer circumferential surface of the second nut, and a limiting hole is formed on the second screw that completely penetrates the second screw.

[0009] The above technical solution further strengthens the restriction on the movement of the first nut in the threaded connection direction, and also makes it easier for installers to confirm whether the part dimensions are normal.

[0010] Preferably, a sponge ring is also provided between the second nut and the clamping groove.

[0011] Through the above technical solution, the sponge ring is used to absorb lubricating oil, so as to release the lubricating oil under the compression of the second nut and the clamping groove, thereby avoiding the situation where the first nut and the second nut are difficult to remove due to corrosion during use.

[0012] Preferably, a film layer is provided on the outer side of the sponge ring.

[0013] Through the above technical solution, a large number of micropores are opened on the film layer, so that the lubricating oil can be released slowly and the lubrication effect is prolonged.

[0014] Preferably, the bolt head has a cross-shaped screw groove on the side away from the screw rod; a hexagonal mounting plate is fixed on the side of the bolt head away from the cross-shaped screw groove.

[0015] The above technical solution allows installers to use Phillips head bolt cutters and Allen wrenches for disassembly, thereby expanding the application scenarios and reducing the impact of stripped screw threads.

[0016] Preferably, a rubber pad is installed on the hexagonal mounting plate facing the first screw, and the rubber pad has curved stripes circumferentially arranged on the side facing the first screw.

[0017] The above technical solution increases friction through the design of the rubber pad, thereby improving the stability of the bolt.

[0018] Preferably, the outer circumferential surface of the second nut is also provided with a tool opening that communicates with the through groove, and tool holes are also provided at both ends of the limiting plate.

[0019] The tool notch and tool hole are designed to facilitate the installation personnel in easily removing the limiting plate inserted into the limiting hole after installation.

[0020] The main technical effects of this utility model are reflected in the following aspects:

[0021] 1. This utility model limits the movement of the first nut in the threaded connection direction by setting a second nut, thereby greatly reducing the risk of the first nut loosening due to vibration or external force;

[0022] 2. This utility model further strengthens the restriction on the movement of the first nut in the threaded connection direction by installing a limiting plate, and at the same time, it also makes it convenient for installers to confirm whether the part dimensions are normal;

[0023] 3. This utility model uses a sponge ring between the first nut and the second nut to absorb lubricating oil, thereby preventing rust between the first nut and the second nut from causing difficulty in disassembly during use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0025] Figure 2 This is a cross-sectional structural diagram of an embodiment of this application;

[0026] Figure 3 Examples of embodiments in this application Figure 2 Enlarged diagram of point A in the middle.

[0027] Reference numerals: 1. First screw; 2. Bolt head; 3. Second screw; 31. Limiting hole; 4. Nut assembly; 41. First nut; 411. Tightening groove; 42. Second nut; 421. Through groove; 422. Tool slot; 5. Limiting plate; 51. Tool hole; 6. Sponge ring; 7. Film layer; 8. Phillips screw slot; 9. Hexagonal mounting plate; 10. Rubber pad. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-3 The specific embodiments of this utility model will be further described in detail to make the technical solution of this utility model easier to understand and master.

[0029] This application discloses an automotive fastening bolt:

[0030] Reference Figure 1-2 An automotive fastening bolt includes a first screw and a bolt head, with the bolt head fixed to one end of the first screw. It also includes a second screw and a nut assembly. One end of the second screw is fixed to the end of the first screw furthest from the bolt head, and the diameter of the second screw is smaller than that of the first screw. The nut assembly includes a first nut and a second nut. The first nut is threaded onto the second screw, with one side abutting against the end face of the first screw, and a locking groove formed on the other side. The second nut is bolted onto the second screw and abuts against the locking groove of the first nut; the outer diameter of the second nut is smaller than that of the first nut. The first nut, threaded onto the second screw and tightly abutting against the end face of the first screw, forms a stable base. When the second nut is bolted onto the second screw and abuts against the locking groove, it effectively restricts the movement of the first nut in the threaded connection direction, thus greatly reducing the risk of the first nut loosening due to vibration or external force. Because the outer diameter of the second nut is smaller than that of the first nut, it can be removed using a smaller wrench.

[0031] Reference Figure 2-3 A limiting plate is installed on the second nut, and a through groove is formed on the outer circumference of the second nut, completely penetrating the second nut. A limiting hole is formed on the second screw rod, completely penetrating the second screw rod. By inserting the limiting plate through the through groove of the second nut into the limiting hole in the second screw rod, the movement of the first nut in the threaded connection direction is further restricted, while also allowing installers to easily confirm whether the part dimensions are correct. A tool slot communicating with the through groove is also formed on the outer circumference of the second nut, and tool holes are also formed at both ends of the limiting plate. The tool slot and tool holes are designed to facilitate the easy removal of the limiting plate inserted into the limiting hole after installation.

[0032] Reference Figure 2-3 A sponge ring is placed between the second nut and the retaining groove. The sponge ring absorbs lubricating oil, which is then released under the pressure of the second nut and the retaining groove, preventing corrosion between the first and second nuts that could make disassembly difficult. A film layer is fitted over the outside of the sponge ring. This film layer has numerous tiny pores, allowing the lubricating oil to be released slowly, thus prolonging the lubrication effect.

[0033] Reference Figure 1-2 The bolt head has a Phillips head slot on the side away from the bolt shank; a hexagonal mounting plate is fixed to the side of the bolt head away from the Phillips head slot. This allows installers to use a Phillips head bolt cutter and an Allen wrench for disassembly, thus expanding the application scenarios and reducing the impact of stripped screw threads.

[0034] A Phillips head bolt cutter allows for quick bolt installation on a vehicle, while a wrench makes it easier for installers to tighten the bolts.

[0035] A rubber pad is mounted on the hexagonal mounting plate facing the first screw, and the rubber pad has circumferential curved stripes on the same side as the first screw. The design of the rubber pad increases friction, thereby improving the stability of the bolt.

[0036] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A car fastening bolt, comprising a first screw and a bolt head, wherein the bolt head is fixed to one end of the first screw; characterized in that, It also includes a second screw and nut assembly. One end of the second screw is fixed to the end of the first screw away from the bolt head, and the diameter of the second screw is smaller than that of the first screw. The nut assembly includes a first nut and a second nut. The first nut is threaded onto the second screw, and one side abuts against the end face of the first screw, while the other side has a tightening groove. The second nut is bolted onto the second screw and abuts against the tightening groove of the first nut. The outer diameter of the second nut is smaller than that of the first nut.

2. The automotive fastening bolt according to claim 1, characterized in that, A limiting plate is installed on the second nut, and a through groove is opened on the outer circumference of the second nut, which completely penetrates the second nut. A limiting hole is opened on the second screw, which completely penetrates the second screw.

3. The automotive fastening bolt according to claim 1, characterized in that, A sponge ring is also provided between the second nut and the clamping groove.

4. The automotive fastening bolt according to claim 3, characterized in that, A membrane layer is fitted on the outside of the sponge ring.

5. The automotive fastening bolt according to claim 1, characterized in that, The bolt head has a cross-shaped screw groove on the side away from the screw rod; a hexagonal mounting plate is fixed on the side of the bolt head away from the cross-shaped screw groove.

6. The automotive fastening bolt according to claim 5, characterized in that, A rubber pad is installed on the hexagonal mounting plate facing the first screw, and the rubber pad has curved stripes circumferentially arranged on the side facing the first screw.

7. The automotive fastening bolt according to claim 2, characterized in that, The outer circumferential surface of the second nut is also provided with a tool opening that communicates with the through groove, and tool holes are also provided at both ends of the limiting plate.

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