Anti-loose self-locking nut and production method thereof

Abstract

The invention relates to the field of manufacturing of automobile parts, in particular to an anti-loose self-locking nut simple in structure, capable of effectively preventing the nut from falling off, convenient to mount and dismount and capable of being reused. The anti-loose self-locking nut comprises a nut body and a nut collar rotatably arranged at the lower end of the nut body, a threaded hole is penetratingly arranged in the middle of the nut body, a stepped groove is formed in the upper end of the nut body, a spring steel piece is placed in the stepped groove, a bending portion used for clamping the spring steel piece in the stepped groove is arranged on the upper portion of the stepped groove, the spring steel piece comprises an annular piece and more than two clamping pieces evenly arranged at the upper end of the annular piece and protruding along the radial direction, the annular piece is formed by a tilt surface rotating and scanning around the axis of the threaded hole, the clamping piece protrudes inwardly to extend into the threaded hole of the nut body, and the extending length of the clamping piece is located between the inner diameter and outer diameter of the threaded hole. The invention further comprises a production method of the anti-loose self-locking nut.

Description

technical field [0001] The invention relates to the field of auto parts manufacturing, in particular to an anti-loosening self-locking nut used for automobile tire bolts and a production method thereof. Background technique [0002] Most of the tire bolts and nuts in the market now have a matching structure, wherein the nut is usually rotatable and is provided with a nut washer to prevent friction between the nut and the wheel steel ring during installation or disassembly. However, when the existing combined structure is subjected to relatively large vibrations, the nuts tend to loosen or even fall off, especially on some heavy-duty vehicles, the phenomenon of loosening and falling off is more prominent. And this kind of loosening or falling off is likely to increase the relative movement between the wheel disc steel ring and the bolt, so that the shear force received by the bolt increases, resulting in the slipping, elongation, bending, and fracture of the bolt, which is ha...

AI Technical Summary

Problems solved by technology

However, when the existing combined structure is subjected to a large vibration, the nuts tend to loosen or even fall off, especially on some heavy-duty vehicles, the phenomenon of loosening and falling off is more prominent

And this kind of loosening or falling off is likely to increase the relative movement between the wheel disc steel ring and the bolt, so that the shear force received by the bolt increases, resulting in the slipping, elongation, bending, and fracture of the bolt, which is harmful to the driving of the vehicle. There are certain security risks

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