High-strength automotive bolt fastener

Abstract

The utility model provides a high strength car bolt fastener, include: round head, one end fixed mounting of round head has first screw rod, first screw rod surface has seted up first thread, first screw rod is connected with first nut through first thread, one end fixed mounting of first screw rod has second screw rod, second screw rod surface has seted up second thread, and second thread is opposite with first thread setting, second screw rod is connected with second nut through second thread, two the inside screw of through -hole all is connected with third screw rod. The high strength car bolt fastener provided by the utility model has opposite first thread and second thread, which are arranged oppositely, so that the installation rotating direction of the first nut and the second nut is opposite, the first nut and the second nut are fixed by the third screw rod, and when subjected to vibration, the first nut and the second nut cannot rotate due to the opposite rotating directions, thereby achieving the purpose of preventing loosening.

Description

Technical Field

[0001] This utility model relates to the field of bolt fasteners, and in particular to a high-strength automotive bolt fastener. Background Technology

[0002] In automobile production, bolts and fasteners are the core link connecting all vehicle parts. They determine whether the vehicle body is stable, whether the power transmission is smooth, and whether driving is safe, and are directly related to the structural safety, performance stability, and sealing reliability of the vehicle.

[0003] During vehicle operation, various vibrations of different frequencies are generated due to road conditions and the vehicle's own characteristics. These vibrations impact internal parts and bolts, causing the bolt thread and nut to rotate, resulting in a decrease in the tightening effect and affecting vehicle safety.

[0004] Therefore, it is necessary to provide a high-strength automotive bolt fastener to solve the above-mentioned technical problems. Utility Model Content

[0005] This invention provides a high-strength automotive bolt fastener that solves the problem of vibrations of various frequencies impacting internal parts and the bolt itself, causing rotation between the bolt thread and nut, resulting in poor fastening effect and affecting vehicle safety.

[0006] To solve the above technical problems, the present invention provides a high-strength automotive bolt fastener, comprising: a round head, one end of which is fixedly mounted with a first screw, the surface of which is provided with a first thread, the first screw being threadedly connected to a first nut via the first thread, and the surface of which the first nut is symmetrically provided with two limiting holes;

[0007] A second screw is fixedly installed at one end of the first screw. A second thread is formed on the surface of the second screw, and the second thread is reversed from the first thread. A second nut is threadedly connected to the second screw through the second thread. Two through holes are symmetrically formed on the surface of the second nut. A third screw is threadedly connected inside each of the two through holes, and one end of the third screw is threadedly connected to the limiting hole.

[0008] Preferably, the diameter of the first screw is greater than the diameter of the second screw, and the diameter of the threaded hole of the first nut is greater than the diameter of the threaded hole of the second nut.

[0009] Preferably, a magnet is installed at the bottom of the limiting hole, and the magnet is arranged in contact with one end of the third screw.

[0010] Preferably, the surface of the first nut is provided with anti-slip teeth, which are located on the side close to the fastened part.

[0011] Preferably, a washer is installed on one side of the round head, and the washer is sleeved on the first screw.

[0012] Preferably, a rubber pad is provided on one side of the gasket, and the rubber pad is used to protect the fastener.

[0013] Preferably, the round head, the first screw, the first nut, the second screw, the second nut, and the third screw are all made of high-strength materials, and the surfaces of the first screw, the second screw, and the third screw are all coated with thread-locking adhesive.

[0014] Compared with related technologies, the high-strength automotive bolt fastener provided by this utility model has the following beneficial effects:

[0015] This utility model provides a high-strength automotive bolt fastener. In operation, a first nut is threadedly connected to a first screw, and a second nut is threadedly connected to a second screw. The first and second threads are arranged in opposite directions, so that the first nut and the second nut rotate in opposite directions. Then, the first nut and the second nut are fixed by a third screw. When the first nut and the second nut are subjected to vibration, they cannot rotate due to their opposite rotation directions, thereby preventing loosening and achieving a long-term fastening effect. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the high-strength automotive bolt fastener provided by this utility model;

[0017] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0018] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the first screw and the second screw of this utility model;

[0020] Figure 5 This is a cross-sectional view of the first nut and the second nut of this utility model.

[0021] Numbering on the map:

[0022] 1. Round head; 11. Washer; 12. Rubber pad;

[0023] 2. First screw; 21. First thread; 22. First nut; 23. Limiting hole; 24. Magnet; 25. Anti-slip teeth;

[0024] 3. Second screw; 31. Second thread; 32. Second nut; 33. Through hole;

[0025] 4. Third screw. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] First Embodiment

[0028] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 High-strength automotive bolt fasteners include: a round head 1, one end of which is fixedly mounted with a first screw 2, the surface of which is provided with a first thread 21, and the first screw 2 is threadedly connected to a first nut 22 through the first thread 21, and the surface of the first nut 22 is symmetrically provided with two limiting holes 23.

[0029] A second screw 3 is fixedly installed at one end of the first screw 2. A second thread 31 is formed on the surface of the second screw 3, and the second thread 31 is reversed with the first thread 21. A second nut 32 is threadedly connected to the second screw 3 through the second thread 31. Two through holes 33 are symmetrically formed on the surface of the second nut 32. A third screw 4 is threadedly connected inside each of the two through holes 33, and one end of the third screw 4 is threadedly connected to the limiting hole 23.

[0030] In operation, the first screw 2 and the second screw 3 pass through the fastener. The first nut 22 is threaded to the first screw 2 via the first thread 21, and the second nut 32 is threaded to the second screw 32 via the second thread 31. The first nut 22 and the second nut 32 rotate in opposite directions. Then, the third screw 4 is inserted into the through hole 33 and the limiting hole 23 and threaded to the first nut 22 and the second nut 32 to fix them. When the first nut 22 and the second nut 32 are vibrated and rotate loose, they cannot rotate because the rotation direction is opposite when they loosen, thus preventing loosening and achieving a long-term fastening effect.

[0031] Please refer to the following: Figure 3 and Figure 4 The diameter of the first screw 2 is greater than the diameter of the second screw 3, and the diameter of the threaded hole of the first nut 22 is greater than the diameter of the threaded hole of the second nut 32.

[0032] During operation, the second screw 3 first passes through the screw hole of the first nut 22, and then the first nut 22 is threadedly connected to the first screw 2. After that, the second nut 32 is threadedly connected to the second screw 3. When the second nut 32 is rotated to the bottom of the second screw 3, it fits tightly with the first screw 2 to prevent the second nut 32 from being misaligned with the first screw 2.

[0033] Please refer to the following: Figure 3 and Figure 5 A magnet 24 is installed at the bottom of the limiting hole 23, and the magnet 24 is in contact with one end of the third screw 4;

[0034] During operation, after the third screw 4 is threaded to the bottom of the limiting hole 23, it is magnetically connected to the bottom of the third screw 4 through the magnet 24 to limit the third screw 4 and prevent the third screw 4 from loosening and falling off.

[0035] Please refer to the following: Figure 1 The first nut 22 has anti-slip teeth 25 on its surface, and the anti-slip teeth 25 are located on the side close to the fastened part;

[0036] When the first nut 22 comes into contact with the fixed part during operation, the anti-slip teeth 25 come into contact with the surface of the fixed part. The anti-slip teeth 25 increase the friction between the fixed part and the first nut 22, preventing the first nut 22 from loosening and falling off the first screw 2 after being vibrated.

[0037] Second Embodiment

[0038] Please refer to the following: Figure 1 , Figure 2 and Figure 3 A washer 11 is installed on one side of the round head 1, and the washer 11 is sleeved on the first screw 2;

[0039] In this embodiment, after the fixed part is fixed by the first screw 2 and the first nut 22, the washer 11 contacts the surface of the fixed part, increasing the contact area between the round head 1 and the fixed part, and avoiding the deformation of the surface of the fixed part due to the large pressure on the contact surface.

[0040] Please refer to the following: Figure 2 and Figure 3 A rubber pad 12 is provided on one side of the gasket 11, and the rubber pad 12 is used to protect the fastener.

[0041] When the gasket 11 comes into contact with the fixed part during operation, the rubber gasket 12 separates the gasket 11 from the fixed part to prevent friction between the gasket 11 and the fixed part from causing surface damage.

[0042] Please refer to the reference again. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The round head 1, the first screw 2, the first nut 22, the second screw 3, the second nut 32 and the third screw 4 are all made of high-strength materials, and the surfaces of the first screw 2, the second screw 3 and the third screw 4 are all coated with thread-locking adhesive.

[0043] During operation, thread-locking adhesive is applied to the surfaces of the first screw 2, the second screw 3, and the third screw 4 to fill the thread gaps and prevent relative rotation caused by vibration.

[0044] The working principle of the high-strength automotive bolt fastener provided by this utility model is as follows:

[0045] In operation, the first screw 2 and the second screw 3 pass through the fastener. The first nut 22 is threaded to the first screw 2 via the first thread 21, and the second nut 32 is threaded to the second screw 32 via the second thread 31. Then, the third screw 4 is inserted into the through hole 33 and the limiting hole 23, and threaded to the first nut 22 and the second nut 32 to fix them. The third screw 4 is limited by the magnet 24. When the first nut 22 and the second nut 32 are vibrated and rotate loosely, they cannot rotate because the rotation direction is opposite when they loosen, thus preventing loosening and achieving a long-term fastening effect. A washer 11 is provided, which contacts the surface of the fastened part, increasing the contact area between the round head 1 and the fastened part, and avoiding deformation of the fastened part surface due to excessive contact pressure.

[0046] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-strength automotive bolt fastener, characterized in that, include: A round head, one end of which is fixedly mounted with a first screw rod, the surface of which is provided with a first thread, and the first screw rod is threadedly connected to a first nut through the first thread, the surface of which is provided with two symmetrical limiting holes; A second screw is fixedly installed at one end of the first screw. A second thread is formed on the surface of the second screw, and the second thread is reversed from the first thread. A second nut is threadedly connected to the second screw through the second thread. Two through holes are symmetrically formed on the surface of the second nut. A third screw is threadedly connected inside each of the two through holes, and one end of the third screw is threadedly connected to the limiting hole.

2. The high-strength automotive bolt fastener according to claim 1, characterized in that, The diameter of the first screw is greater than the diameter of the second screw, and the diameter of the threaded hole of the first nut is greater than the diameter of the threaded hole of the second nut.

3. The high-strength automotive bolt fastener according to claim 1, characterized in that, A magnet is installed at the bottom of the limiting hole, and the magnet is in contact with one end of the third screw.

4. The high-strength automotive bolt fastener according to claim 2, characterized in that, The surface of the first nut is provided with anti-slip teeth, which are located on the side close to the fastened part.

5. The high-strength automotive bolt fastener according to claim 1, characterized in that, A washer is installed on one side of the round head, and the washer is sleeved on the first screw.

6. The high-strength automotive bolt fastener according to claim 5, characterized in that, A rubber pad is provided on one side of the gasket, which is used to protect the fastener.

7. The high-strength automotive bolt fastener according to claim 1, characterized in that, The round head, the first screw, the first nut, the second screw, the second nut, and the third screw are all made of high-strength materials, and the surfaces of the first screw, the second screw, and the third screw are all coated with thread-locking adhesive.

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