Self-plugging rivet with shear ring

Abstract

The invention provides a self-plugging rivet with a shear ring. The self-plugging rivet with the shear ring comprises a core rod, a rivet sleeve, the shear ring, a lock ring and a drive anvil piece, wherein a neck-breaking groove is formed in the center of the core rod; a clamping section and a riveting section are arranged on two sides of the neck-breaking groove; a lock ring groove is arranged at the position, adjacent to the neck-breaking groove, on the riveting section; a groove is further formed at the position, close to the lock ring groove, of the middle part of the riveting section; the shear ring is clamped onto the groove; the rivet sleeve can movably sleeve on the core rod; the tail part of the rivet sleeve can be limited by the shear ring; the lock ring is clamped onto the lockring groove and is located between the core rod and the rivet sleeve; and the drive anvil piece can movable sleeve on the core rod and can be limited by the head part of the rivet sleeve. The self-plugging rivet with the shear ring provided by the invention can provide a larger clamping force, and is applicable to single-side fastening occasions requiring higher interpolate tightening requirements.

Description

technical field [0001] The invention belongs to the field of aerospace fasteners, in particular to a blind rivet with a shear ring. Background technique [0002] With the development of new material technology, composite materials are widely used in the manufacture of structural parts of aviation aircraft, helicopters, fighter jets, rockets, missiles, launch vehicles and satellite aircraft due to their particularity and molding process. The internationally developed fasteners for connecting composite materials are blind rivets. Blind rivets have the characteristics of light weight, more reliable connection, high strength, convenient and quick installation, etc., and have been widely used in various aerospace vehicles. [0003] The blind rivet is a kind of rivet for single-sided riveting. The assembly is mainly composed of a nail sleeve, a core rod and necessary additional parts (such as a lock ring that locks the core rod in the nail sleeve). The core rod is mechanically loc...

AI Technical Summary

Problems solved by technology

However, the clamping force of ordinary blind rivets has certain limitations. When used in parts with large interlayer gaps and structures with large curvature, the clamping force often fails to meet the requirements, and the riveting effect is not good. Difficult to remove, easy to loosen, and even lead to deformation and failure of rivets in severe cases

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