Combined-type loose-proof nut

Abstract

The invention belongs to the technical field of loose-proof fasteners and discloses a combined-type loose-proof nut. The combined-type loose-proof nut comprises a nut body and an elastic loose-proof part arranged on the nut body, wherein a counterbore is formed in one end face of the nut body in the axial direction; the elastic loose-proof part is fixedly arranged in the counterbore; a threaded hole is formed in the elastic loose-proof part and coaxial with a central threaded hole of the nut body; elastic parts are uniformly circumferentially arranged on the lower end face of the elastic anti-loose part; the elastic parts are integrated with the elastic anti-loose part; the lower ends of the elastic parts are in contact with the bottom of the counterbore; and a limiting structure is arranged at the opening of the counterbore and is in contact with the upper end face of the elastic anti-loose part. According to the combined-type loose-proof nut, the nut body, the elastic loose-proof part and the elastic parts are combined together; the nut body and the elastic anti-loose part are both connected with a screw rod or a bolt; the elastic loose-proof part holds the thread or the screw tightly to play a loose-proof role; and the elastic parts provide stable axial elastic force, so that the loose-proof effect is good. Therefore, the combined-type loose-proof nut is suitable for promotion and application.

Description

technical field [0001] The invention belongs to the technical field of anti-loosening fasteners, in particular to an anti-loosening nut, in particular to a composite anti-loosening nut. Background technique [0002] In many fields such as industrial production, automobile, aerospace and rail transit, threaded fasteners are widely used in equipment to achieve connections, but for high-strength impact loads and alternating loads, the anti-loosening of threaded fasteners The detachment problem has not been effectively resolved. [0003] For the anti-loosening requirements of threaded fasteners, there are a large number of nuts on the market, mainly through mechanical stop, punching stop, riveting and other methods to achieve anti-loosening, but the effect is not ideal; once the nut is loose, the bolt will The effective connection with the nut will quickly loosen and fail, and the reliability cannot be guaranteed. [0004] In addition, the existing nuts are difficult to produc...

AI Technical Summary

Problems solved by technology

[0002] In many fields such as industrial production, automobile, aerospace and rail transit, threaded fasteners are widely used in equipment to achieve connections, but for high-strength impact loads and alternating loads, the anti-loosening of threaded fasteners The problem of detachment has not been effectively resolved

[0003] For the anti-loosening requirements of threaded fasteners, there are a large number of nuts on the market, mainly through mechanical stop, edge punching stop, riveting and other methods to achieve anti-loosening, but the effect is not ideal; once the nut is loose, the bolt will The effective connection with the nut will quickly loosen and fail, and the reliability cannot be guaranteed

[0004] In addition, the existing nuts are difficult to produce and process, high production cost, low yield and reliability cannot be guaranteed; during maintenance, some special-shaped nuts must be disassembled with special tools, the disassembly process is cumbersome, time-consuming and laborious, and extremely inconvenient , leading to low work efficiency

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