An expansion rivet

Abstract

The invention discloses an expansion rivet. It includes the head of the sleeve structure and the rod protruding from the head. The middle part of the head is provided with a flange for pressing the riveted parts. The circumference of the head is provided with long grooves arranged longitudinally along the surface of the sleeve. The section of the rod protruding into the head is provided with conical teeth arranged along the circumference of the rod. The conical teeth are arranged along the circumference of the rod and correspond to the position of the long groove. The conical teeth can be stabbed after the rivet is riveted and deformed. into the inner surface of the workpiece. After the above-mentioned structure is adopted, during the riveting deformation process, the conical teeth can be simultaneously deformed and pierced into the inner surface of the workpiece, so that they can be completely combined with the workpiece to form a whole, thereby generating a strong tension force, making the two workpieces Just tightening together will not reduce the riveting force due to the extension of time, and the reliability of tightening is good, which ensures long-term use.

Description

technical field [0001] The invention relates to a rivet, in particular to an expansion rivet. Background technique [0002] Rivets are common parts used to anchor two parts. Existing rivets generally include a stem and a head. When in use, first use a drilling tool to make a mounting hole, then place a pull rivet in the mounting hole, and finally Then use a riveting gun to act on the rivet, forcefully deform the rivet of the rivet, and after the rivet deforms and expands, it forms a disc-shaped or cylindrical card and is stuck in the installation hole to complete the riveting connection. The existing rivet of this structure , the two workpieces can only be tightened together, but after a long time, the riveting force is likely to decrease, resulting in loosening, which affects the use. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an expansion rivet with high riveting force and not easy to loosen. [0004] In...

AI Technical Summary

Problems solved by technology

[0002] Rivets are common parts used to anchor two parts. Existing rivets generally include a stem and a head. When in use, first use a drilling tool to make a mounting hole, then place a pull rivet in the mounting hole, and finally Then use a riveting gun to act on the rivet, forcefully deform the rivet of the rivet, and after the rivet deforms and expands, it forms a disc-shaped or cylindrical card and is stuck in the installation hole to complete the riveting connection. The existing rivet of this structure , can make the two workpieces only tightened together, but the riveting force tends to decrease after a long time, resulting in loosening, which affects the use

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