Metal pressing rivet nut

Abstract

The invention discloses a metal pressing rivet nut. The metal pressing rivet nut comprises a nut body, a hollow steel column is connected to the bottom end of the nut body, a plurality of knurling teeth are evenly connected to the outer wall of the hollow steel column, an annular pressure bearing seat is installed at the top end of the nut body, a plurality of alloy columns are installed in the annular pressure bearing seat, the alloy columns are connected with the outer side of the annular pressure bearing seat through pressure-dividing silicon steel sheets, the pressure-dividing silicon steel sheets are fixedly connected through a center plate, the pressure-dividing silicon steel sheets penetrate through the side face of the annular pressure bearing seat and are connected with arc-shaped seats, the bottom ends of the alloy columns penetrate through the nut body and are connected with an annular elastic pad, a plurality of nitrile rubber pads are arranged on the surfaces of the knurling teeth, the edges of the nitrile rubber pads are connected with the surfaces of the knurling teeth through protective steel sheets, and sealing protrusions are installed between the adjacent knurling teeth. Therefore, the overall pressure bearing capacity is improved, meanwhile, uniform pressure division is achieved, damage is not prone to occurring, the sealing performance is high after fixing, and the permeation condition is not prone to occurring.

Description

technical field [0001] The invention relates to the technical field of nuts, in particular to a metal rivet nut. Background technique [0002] Rivet nuts are also called rivet nuts, self-fastening nuts, which are a kind of nuts applied to thin plates or sheet metals. They are round in shape and have embossed teeth and guide grooves at one end. The principle is to press the embossing teeth into the preset holes of the sheet metal. Generally speaking, the aperture of the preset holes is slightly smaller than the embossing teeth of the rivet nut. The periphery of the hole is plastically deformed, and the deformation is squeezed into the guide groove, thereby producing a locking effect. [0003] Rivet nuts are divided into S-type fast-cutting steel rivet nuts, CLS-type stainless steel rivet nuts, SP-type stainless steel rivet nuts, and CLA-type copper and aluminum rivet nuts, which are suitable for different environments. The specifications are usually from M2 to M12. There is...

AI Technical Summary

Problems solved by technology

[0004] However, the existing rivet nuts need to bear the pressure during use, which may sometimes cause uneven stress on the surface of the nut, which is easy to cause damage to the nut, and after the general rivet nut is fixed, the airtightness is not good. Leakage is prone to occur, affecting the use

Images