Cantilever type detachable fastener

Abstract

The invention provides a cantilever type detachable fastener which comprises a cantilever fastening part and a locking part, wherein the length of a cantilever beam of the cantilever fastening part is 5-9 times the thickness of the cantilever beam, the top width of the cantilever beam is 0.25 time the root width of the cantilever beam, the width of the cantilever beam is linearly reduced from the root to the top, the top thickness of the cantilever beam is 0.5 time the root thickness of the cantilever beam, and the lapping amount of the cantilever fastening part is 0.7-1.2. According to the detachable fastener, the length, thickness, width and lapping amount of the cantilever beam of the cantilever fastening part are optimized on the basis of fully considering elastic deformation amount; the elasticity of the fastener is improved and the injection molding difficulty is considered; the deformation amount of the fastener is increased by 28%-63%; the fastener is firm to connect and difficult to separate, and also can resist the damage caused by impact, collision and falling.

Description

technical field [0001] The invention belongs to a connecting piece, in particular to a cantilever type detachable buckle. Background technique [0002] Plastic snaps are similar to locking parts. They are a simple, economical, fast and reliable connection method. They are formed at the same time as plastic parts, and different plastic raw materials are used for mass production according to needs. Plastic buckles are divided into detachable and non-detachable types in terms of disassembly difficulty; they are mainly divided into cantilever type and ball type in terms of shape. [0003] The cantilever buckle uses the characteristics of plastic deformation to realize the connection between parts, that is, elastic deformation occurs when the force is applied, and elastically returns to the original shape after being snapped into place. It is mostly used in intermittent working occasions. It only bears high stress at the moment of assembly and disassembly, and is in a relaxed st...

AI Technical Summary

Problems solved by technology

However, unreasonable design will lead to problems such as difficulty in snapping in or easy release after snapping in, deformation of the cantilever during use, breakage at the root of the cantilever or the bottom of the buckle, etc., especially in the process of impact, drop, collision, and vibration. Buckle buckle or break phenomenon is particularly obvious

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