Burglarproof nut and manufacturing method thereof

Abstract

The invention discloses a burglarproof nut which comprises a nut sleeve made of a metal material and a fastener in the nut sleeve; when the burglarproof nut is mounted for use, the nut sleeve rotates and extrudes the fastener around the axis of the burglarproof nut, so that the outer side wall of the fastener locally or partly deforms; particularly, threads on the inner side wall of the fastener greatly deform or move, so that a thread structure between the burglarproof nut and a screw connected with the burglarproof nut is damaged; the fastener after fastening cannot be detached by rotating, and the nut sleeve slides in the circumferential direction relative to the fastener, so that the aim of preventing stealing is achieved. According to a manufacturing method for the burglarproof nut, disclosed by the invention, the nut sleeve and the fastener can be manufactured by using one cylindrical blank, so the manufacturing steps of the traditional manufacturing method, i.e., the nut sleeve and the fastener are manufactured by respectively using the blanks and then are assembled, and the metal material is saved by half; meanwhile, the process is simplified, and the manufacturing process can be finished on the same cold header.

Description

technical field [0001] The invention relates to the field of fasteners, in particular to an anti-theft nut and a manufacturing method thereof. Background technique [0002] In some fields, a large number of anti-theft and anti-loosening nuts need to be used, such as communication, electric power, railway and other facilities installed outdoors. Because traditional ordinary nuts are used, they are easy to be unscrewed by tools, so they are very easy to be stolen, so Anti-theft, anti-loosening nuts must be used. Some existing anti-theft nuts have irregular shapes and can only be unscrewed by being equipped with specially customized tools, but thieves can easily customize similar tools according to the shape of the nuts to unscrew the nuts; there are also steel balls or steel pins The structure of the anti-theft nut, but the steel pin or steel ball does not touch the screw rod during use, the anti-theft nut can still be easily unscrewed in reverse, and the anti-theft effect is...

AI Technical Summary

Problems solved by technology

[0002] In some fields, a large number of anti-theft and anti-loosening nuts need to be used, such as communication, electric power, railway and other facilities installed outdoors. Because traditional ordinary nuts are used, they are easy to be unscrewed by tools, so they are very easy to be stolen, so Anti-theft, anti-loosening nuts must be used

Some of the existing anti-theft nuts have irregular shapes and can only be unscrewed by being equipped with specially customized tools, but thieves can easily customize similar tools according to the shape of the nuts to unscrew the nuts; there are also steel balls or steel pins The structure of the anti-theft nut, but the steel pin or steel ball does not touch the screw during use, the anti-theft nut can still be easily unscrewed in reverse, and the anti-theft effect is still not ideal

The traditional method of manufacturing anti-theft nuts is to manufacture a nut sleeve from a blank, and manufacture a fastening body from another blank, and then complete the assembly. However, the nut sleeve and the fastening body are generally hollow mechanisms, and this manufacturing method will produce A large amount of metal waste has caused a lot of waste, and there are many production processes, complex processes and low efficiency

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