Bolt simultaneously equipped with positive thread and multiple second-stage threads

Abstract

The invention discloses a bolt simultaneously equipped with a positive thread and multiple second-stage threads and relates to the field of machinery. According to the technical scheme of the bolt, a non-through small-diameter opening is a square non-through small-diameter opening containing blind holes, the cross section of the square non-through small-diameter opening containing the blind holes is a square, and the side wall of the bottom of the square non-through small-diameter opening containing the blind holes at least further contains one blind hole. A component capable of repeatedly changing the diameter is located at the tail end of a bolt main body component and contains three parts of a bolt tail-section main body component body, a separating stopping component body A and a separating stopping component body B, and the total length of the separating stopping component body A and the separating stopping component body B in the component capable of repeatedly changing the diameter is a little smaller than the length of the square cross section of the square non-through small-diameter opening containing the blind holes. The bolt simultaneously equipped with the positive thread and the multiple second-stage threads has the beneficial effect of being good in separating stopping effect.

Description

technical field [0001] The invention relates to the mechanical field, specifically, a mechanical structural device. Background technique [0002] Most of the existing bolts belong to the machine parts including only one type of thread segment, the structure is simple, and there is still room for improvement in the anti-loosening performance. Contents of the invention [0003] The purpose of this invention is to provide a bolt equipped with one section of normal grain and multiple sections of secondary grain at the same time. In order to achieve the above purpose, this invention is a bolt equipped with one section of normal grain and multiple sections of secondary grain at the same time. It is characterized in that, [0004] The non-through small-diameter opening is a square non-through small-diameter opening with blind holes, of which: [0005] The cross-sectional shape of the blind hole and the non-through small diameter opening is a square, [0006] There is at least o...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing bolts belong to the parts that only include one type of thread segment, the structure is simple, and there is still room for improvement in its anti-loosening performance