A self-locking blind rivet

Abstract

The invention belongs to the technical field of fasteners, and particularly relates to a self-locking self-plugging rivet. The self-locking self-plugging rivet comprises a core rod, a pipe body, a rodsleeve, an elastic sealing sleeve, a filling ring and a buffer extrusion plate. The core rod comprises a rod body, a clamping segment, a breaking neck trough and a limiting table, and the clamping segment is located at one end of the rod body. The breaking neck trough is located in the middle of the rod body. The limiting table is located at the other end of the rod body. The pipe body is arranged at the end, close to the limiting table, of the rod body in a sleeving manner, and the pipe body is matched with the core rod. The rod sleeve is located in the middle of the core rod and matched with the core rod. One end of the elastic sealing sleeve is fixedly connected with the end of the rod sleeve, and the elastic sealing sleeve is used for sealing the joint of the rod sleeve and a sealingshell. The buffer extrusion plate is arranged on the rod body in a sleeving manner and located on the side of the rod sleeve. The filling ring is arranged on the rod body in a sleeving manner and located between the buffer extrusion plate and the rod sleeve. According to the self-locking self-plugging rivet, the overall stability of the self-locking self-plugging rivet is improved, it is guaranteed that a protection layer relevant to the self-locking self-plugging rivet is not damaged, and the application occasion of the self-locking self-plugging rivet is widened.

Description

technical field [0001] The invention belongs to the technical field of fasteners, in particular to a self-locking blind rivet. Background technique [0002] In many box-like components with an inner cavity structure, the parts in the box are connected to the outside of the box through the opening of the box. The inside of the box needs to prevent external impurities such as dust and moisture from invading the inside of the machine and equipment to avoid The material or parts of the internal parts are damaged to affect its performance. However, the orifice of the box is easily corroded by the acid, alkali and salt of the outside at room temperature and rusts. It has airtightness, so while sealing the box body, it is also necessary to carry out anti-rust treatment on the box opening. Therefore, several layers of protective layers are applied to the box opening and the connection between the fastener and the box opening. Such as the glue layer and the paint layer, to prevent r...

AI Technical Summary

Problems solved by technology

[0005] In the above-mentioned Patent Document 1, since the fastening of the blind rivet is to directly break the core rod rigidly with a riveting gun, during the riveting process, the pipe body and the rod sleeve are elastically formed instead of plastically formed, and the amount of springback is relatively large. The internal stress is large, and it is easy to rebound or loosen for a long time, and the rebound and looseness of the fastener will destroy the protective layer coated on the surface of the fastener, so that the fastened product cannot be completely protected by the protective layer

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