Pull rivet type self-plugging rivet

Abstract

The invention provides a pull rivet type self-plugging rivet. The pull rivet type self-plugging rivet comprises a core rod, a tube body, a ring and a rivet body; the tube body, the ring and the rivet body are arranged on the outer side of the core rod in a sleeved mode in sequence; the core rod is composed of a head part and a rod part; the head part is provided with a stop block; the rod part is divided into three sections which include a section A connected with the head part, a section B in the middle and a section C which is provided with the free end; a neck breaking groove is formed between the section A and the section B; the tube body is hollow and cylindrical, a clamping shoulder A or a step A is disposed on the inner wall of the tube body; the section A of the core rod is sleeved with the tube body which is in clearance fit with the core rod; the ring is hollow and cylindrical and clamped at the clamping shoulder A or the step A inside the tube body; the rivet body is of a hollow structure, an outer chamfer structure is disposed at one end of the rivet body, and a protruding rivet cap is disposed on the outer wall of the other end of the rivet body. The pull rivet type self-plugging rivet has the beneficial effects that the structure is simple; installation and check are convenient; the structural strength is improved in a locking mode; deformation is not prone to occur; the riveting effect is better.

Description

technical field [0001] The invention belongs to the field of fasteners, in particular to a pull-rivet type blind rivet. Background technique [0002] In the design process of high-end equipment such as aerospace, considering the factors of volume and weight, the structural design is generally relatively compact. The connection and installation space of these compactly designed structural parts is relatively narrow. It needs to be installed on both sides, and cannot meet the installation requirements of these occasions. Therefore, in these places where the installation space is relatively narrow and it is not convenient for double-sided operation, riveting is generally used. The riveting method used in structural joints is generally 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. Most of the currently used blind rive...

AI Technical Summary

Problems solved by technology

It is difficult for the existing blind rivets to meet the strength and appearance requirements in some special occasions, such as occasions with stricter requirements on the pretightening force.

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