A kind of anti-loosening bolt assembly and its anti-loosening bolt and anti-loosening nut

Abstract

The invention relates to an anti-loosening bolt assembly and its anti-loosening bolt and anti-loosening nut. The anti-loosening bolt assembly includes a bolt with an external thread and a nut with an internal thread. The thread grooves with slopes on both sides are spirally fitted, the major diameter of the external thread of the bolt is the same as the major diameter of the internal thread of the nut, the minor diameter of the external thread of the bolt is larger than the minor diameter of the internal thread of the nut, and the hardness of the bolt is greater than that of the nut The hardness of the thread teeth of the internal thread is deformed by the top pressure of the bottom of the thread groove of the external thread during the process of screwing the nut onto the bolt to fill the thread groove of the external thread, and the two sides of the thread teeth of the internal thread The slopes respectively correspond to pressing contact with the slopes on both sides of the thread groove of the bolt. The slopes on both sides of the thread teeth are in pressure contact with the slopes on both sides of the thread groove, which effectively strengthens the friction between the bolt and the nut, and effectively improves the anti-loosening effect of the anti-loosening bolt assembly.

Description

technical field [0001] The invention relates to an anti-loosening bolt assembly and its anti-loosening bolt and anti-loosening nut. Background technique [0002] Various machines and components are inseparable from fasteners in connection assembly. Fasteners bring convenience to the machinery industry, but they have an inevitable weakness, that is, they will loosen by themselves in severe or frequent vibrations, causing damage, disintegration, or even accidents to parts or a complete piece of equipment . In order to solve the loosening problem of fasteners, scientists and engineers from many countries in the world have done a lot of experiments and researches since the birth of threaded fasteners. To a certain extent, the time for the fastener to loosen by itself has been alleviated, but the problem has not been fundamentally solved. [0003] The thread of existing common bolt 100 is as figure 1 As shown, it is a complete cone of 60° arranged along with the helical line,...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an anti-loosening bolt assembly to solve the problem in the prior art between the front slopes on both sides of the thread groove of the bolt external thread and the front slopes on both sides of the thread teeth of the nut internal thread. The gap affects the technical problem of the anti-loosening and self-locking performance of the bolt assembly; at the same time, the invention also provides a kind of anti-loosening bolt and anti-loosening nut

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