Anti-loosening bolt

Abstract

Grooves are formed in threads of the bolt and a nut in the axial direction, when the bolt is tightened, the grooves of the bolt and the nut are aligned, a metal plug pin is inserted into the grooves, and the anti-loosening effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of fasteners, and in particular to an anti-loosening bolt. Background Technology

[0002] In the fields of machinery and construction, bolts are widely used as an important connecting element. Their function is to fasten two or more components together, ensuring they can withstand various loads and pressures.

[0003] Bolts will generally loosen when used in a vibrating environment, especially in a high-frequency vibration environment, where the loosening speed will be accelerated. Summary of the Invention

[0004] To overcome the above-mentioned defects, the present invention provides an anti-loosening bolt, wherein the bolt and nut have axial grooves on their threads. When tightening the bolt, the grooves of the bolt and nut are aligned, and a metal pin is inserted into the groove to achieve the anti-loosening effect.

[0005] The technical solution adopted by the present invention to solve its technical problem is: an anti-loosening bolt, including a bolt, a nut, and a metal pin. Grooves are opened along the axial direction on the threads of the bolt and the nut. When tightening the bolt, the grooves on the bolt threads are aligned with the grooves on the nut threads. A metal pin is inserted into the aligned grooves. Under the obstruction of the metal pin, the bolt and nut cannot rotate and loosen along the threads, thereby achieving the anti-loosening effect.

[0006] The aforementioned anti-loosening bolt has an axial groove on its thread.

[0007] The aforementioned anti-loosening bolt has four grooves along the axial direction on the thread of the nut.

[0008] The aforementioned anti-loosening bolt requires aligning any one of the four grooves on the nut with the groove on the bolt when tightening the bolt.

[0009] In the aforementioned type of anti-loosening bolt, the groove depth on the threads of the bolt and nut is the same as the thread height.

[0010] In the aforementioned type of anti-loosening bolt, the thickness of the metal pin is equal to twice the thread height.

[0011] In the aforementioned type of anti-loosening bolt, after the metal pin is inserted into the aligned groove, the remaining part is bent at both ends of the nut.

[0012] The beneficial effects of this invention are that it prevents loosening caused by the rotation of the bolt and nut along the thread, and the maintenance cost of the metal pin is extremely low, and maintenance is convenient and quick. This anti-loosening bolt can be produced with only minor modifications to existing production processes, resulting in significant social benefits. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the present invention;

[0015] In the diagram: 1. Bolt, 2. Nut, 3. Metal pin, 4. Groove. Detailed Implementation

[0016]

Example 1

[0017] An anti-loosening bolt includes a bolt 1, a nut 2, and a metal pin 3. The bolt has a groove 4, and the nut has four grooves 4. When tightening the bolt, any one of the four grooves on the nut is aligned with the groove on the bolt. Then, the metal pin is inserted into the aligned groove, and the remaining part of the metal pin is bent at both ends of the nut.

[0018] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. For those skilled in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-loosening bolt, comprising a bolt (1) and a nut (2), characterized in that: Grooves (4) are made along the axial direction on the threads of the bolt (1) and nut (2). After the grooves of the bolt and nut are aligned, a metal pin (3) is inserted into the groove.

2. The anti-loosening bolt according to claim 1, characterized in that, A groove is cut along the axial direction on the thread of the bolt (4).

3. The anti-loosening bolt according to claim 2, characterized in that, The depth of the groove (4) on the bolt thread is the same as the thread height.

4. The anti-loosening bolt according to claim 1, characterized in that, Four grooves (4) are made along the axial direction on the thread of the nut.

5. The anti-loosening bolt according to claim 4, characterized in that, The depth of the groove (4) on the nut thread is the same as the thread height.

6. The anti-loosening bolt according to claim 1, characterized in that, After aligning the groove on the bolt thread with the groove on the nut thread, insert a metal pin into the groove (3).

7. The anti-loosening bolt according to claim 6, characterized in that, The thickness of the metal pin (3) is equal to twice the thread height.

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