Circulation type rivet with rivet core

Abstract

The invention relates to a circulation type rivet with a rivet core, which comprises a rivet body and a rivet core. The materials of the rivet core are harder than those of the rivet body. A cavity is arranged at the middle part of the rivet body; the rivet core comprises a rivet core head part and a pull rod; the rivet core head part is positioned at the upper end of the pull rod; the upper part of the pull rod is sleeved in the cavity; the cavity comprises an upper cylinder surface and a lower cone surface; the maximum internal diameter of a lower cone is slightly smaller than the diameter of the outer cylinder surface of the rivet body; a chamber angle is formed at the head part of the outer cylinder surface of the rivet body; the diameter at the least position of the chamber angle is basically consistent with that at the largest position of the head part of the rivet core; the diameter at the largest position of the head part of the rivet core is slightly smaller than that of a circular ring at the middle section of the lower cone surface of the cavity; the top end of the head part of the rivet core is a hemispherical surface; the bottom surface of the hemispherical surface is a concave surface; the concave surface is connected with the top end of the pull rod of the rivet core; and threads are arranged on the cylinder surface of the middle lower end of the pull rod. The circulation type rivet with the rivet core improves the resource utilization rate and reduces the use cost.

Description

technical field [0001] The invention belongs to the field of rivets, in particular to a core circulation type blind rivet. Background technique [0002] As we all know, according to GB / T12617.1-2006 and GB / T12618.1-2006, etc., the country has standardized the blind rivets, and analyzed the structure size, material combination, surface treatment process, mechanical properties and mechanical load of the blind rivets. , work quality and other aspects have made specific provisions. The nail body material is aluminum alloy (AIA), the nail core material is steel (St) and other related parameters. [0003] Blind rivets are a kind of rivets used for single-sided riveting. Among them, the open type flat round head blind rivets are the most widely used, the countersunk head blind rivets are suitable for riveting occasions where the surface needs to be smooth, and the closed blind rivets are suitable for riveting occasions requiring higher load and certain sealing performance. Blind...

AI Technical Summary

Problems solved by technology

The experimental test results show that the holding force of the riveted workpiece is relatively weak compared with that of the standard blind rivet riveted workpiece, which cannot meet the occasions where the external environment has a large vibration and a certain impact

Images