Self-tapping and self-locking bolt

Abstract

The invention discloses a self-tapping and self-locking bolt. The self-tapping and self-locking bolt comprises a screw, wherein a triangular tapping hole is formed in one end of the screw; the outer side of the triangular tapping head is provided with breaking teeth, a steel plate washer and a rubber blanket; the screw is internally provided with an inner hole. The screw of the self-tapping and self-locking bolt is internally provided with the inner hole; by adopting the inner hole design, the screw is arranged into a hollow structure, and the quality of the screw can be reduced; in addition, the consumption of a material can be reduced and further the manufacturing cost of the screw is reduced; the screw is provided with a nut; in addition, the steel plate washer is arranged at the bottom end of the nut, and the rubber blanket is arranged below the steel plate washer; the nut can be designed for adjusting the tapping length of the screw into a plastic metal plate; besides, the rubber blanket and the steel plate washer can be designed for enhancing sealing and fixing effects; threads are arranged on the outer side of the screw, so that the screw can be self-locked for fixing; in addition, the screw is matched with the nut to enhance the fixing effect.

Description

technical field [0001] The invention relates to the technical field of self-tapping and self-locking bolts, in particular to a self-tapping and self-locking bolt. Background technique [0002] Self-locking screw refers to a self-tapping screw that does not need to be used with a nut. The thread is self-tapping and the tail is pointed. When the triangular tooth self-extrusion screw is screwed into the hole on the plastic metal material, it is squeezed in by extrusion. The inner thread is formed in the hole and a reliable locking thread connection is formed; the triangular tooth self-locking screw refers to a self-tapping screw whose thread is a triangular tooth, and the tail is pointed and triangular. There are three prismatic threads, first understand the structural elements of self-tapping screws, and then go to understand self-locking screws, because self-locking screws are also a type of self-tapping screws, from the production of self-tapping screws, triangular self-lock...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a self-tapping and self-locking bolt to solve the solid structure proposed in the above-mentioned background technology, which has a large mass and high manufacturing cost, and is fixed by a single method, resulting in insufficient fixation. For those with frequent vibration and pressure changes position, after a long time, it is easy to have problems such as thread back and shedding.

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