Anti-vibration anti-loose spring nut structure

Abstract

The invention discloses an anti-vibration anti-loose spring nut structure. The anti-vibration anti-loose spring nut structure comprises a nut main body and an anti-loose spring, wherein a partial internal thread is arranged at the rear end part of the inner wall of the nut main body, the front end part of the inner wall of the nut main body is further provided with a step part without the internalthread, the anti-loose spring is provided with a head end, a coil and a tail end, a clamping part and a transverse I-shaped opening groove are formed in the inner wall of the step part, the clampingpart is used for fixing the head end of the anti-loose spring, the tail end part of the anti-loose spring is clamped in the transverse I-shaped opening groove, the tail end part extends out or does not extend out of the outer wall of the nut main body, a circle of anti-loose teeth is arranged at the rear end of the nut main body, the anti-loose teeth can increase friction force between the anti-loose teeth and a contacted workpiece, a bolt is prevented from being loosened due to the action of an external force through the overall elastic clamping force of the anti-loose spring, so that the defect that a traditional nut is easy to loose from a bolt is effectively overcome, production process is simple, multiple times of repeated use can be realized, and a safe and lasting anti-loose effectcan be fully realized.

Description

technical field [0001] The invention belongs to an anti-loosening fastener, in particular, relates to a nut assembly which can prevent the nut from loosening and falling off in high-intensity vibration when the nut and the bolt are used together, and can be repeatedly disassembled and installed. A locknut that resists vibration. Background technique [0002] The connection and assembly of various equipment and components such as the machinery industry, the automobile industry, the aerospace industry, and medical equipment are inseparable from the fastening method of nuts and bolts. However, this method has an inevitable weakness, that is, the nut will loosen or even fall off under high-intensity vibration. Loosening and falling off of nuts will lead to damage, scrapping and disassembly of the whole equipment or related parts, and even lead to accidents and personal injury. Up to now, the tightening methods of nuts and bolts that have been disclosed and used are not very id...

AI Technical Summary

Problems solved by technology

However, this method has an inevitable weakness, that is, the nut will loosen or even fall off under high-intensity vibration.

Loosening and falling off of nuts will lead to damage, scrapping and disassembly of the whole equipment or related parts, and even lead to accidents and personal injury

Up to now, the fastening methods of nuts and bolts that have been disclosed and used are not very ideal in anti-loosening performance, and some have complex structures and cumbersome operations.

[0003] Patent CN200820028257.8 discloses a stop ring elastic anti-loosening nut, which discloses that the elastic circlip 2 is stuck in the tooth groove of the toothed flange nut 3, and during use, the elastic circlip is easy to disengage from the flange nut. Slipping out of the tooth groove, resulting in poor anti-loosening effect, and the stop ring 1 needs to be used with a specific slotted hexagon nut 4, resulting in a complex structure and cumbersome installation and removal operations

[0004] Patent CN201420382718.7 discloses a locking and anti-loosening nut. It discloses that the wire thread sleeve 2 and the bolt are interferingly engaged to achieve the anti-loosening effect. During use, because one end of the wire thread sleeve exceeds the For the outer wall, common tools cannot be used when installing and removing nuts, resulting in cumbersome installation and removal operations

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