Rounded zipper tooth

Abstract

The invention discloses a rounded zipper tooth. The rounded zipper tooth comprises a zipper tooth body. The zipper tooth body is a semicircular columnar body. One end of one engaging surface of the zipper tooth body and one end of the other engaging surface of the zipper tooth body are recessed into the zipper tooth body to form an engaging portion and engaging concave portions, positioning portions are arranged on the engaging concave portions, and positioning grooves are formed in the engaging portion. The rounded zipper tooth is special in structural design, and when zipper teeth are engaged, the engaged zipper teeth are round. Compared with the prior art, the rounded zipper teeth are in dual engaging and locking during mutual engaging, the engaging portion of one zipper tooth is engaged with the engaging concave portions of the other zipper tooth, the positioning portions of one zipper tooth are clamped and locked with the positioning grooves of the other zipper tooth, the zipper teeth are engaged and locked in two dimensional directions, and engaging of the interacting zipper teeth is firmer; even when the zipper teeth are torn by large external force from the left-and-right direction, the engaged zipper teeth are not prone to disengage.

Description

technical field [0001] The invention relates to the technical field of zippers, in particular to a round zipper element. Background technique [0002] The zipper is a connecting piece that relies on the zipper teeth arranged continuously to make the items merge or separate. It is now widely used in clothing, bags, tents, etc. The zipper is composed of zipper teeth, sliders, upper and lower stops (front and back) or locking parts, among which the zipper teeth are the key parts, which directly determine the side pull strength of the zipper. A general zipper has two chain belts, and each chain belt has a row of zipper teeth. The two rows of zipper teeth are arranged alternately. The slider clamps the zipper teeth on both sides. Engage or disengage each other. [0003] Most of the existing zipper structures are "P-type" zippers. "P-type" zippers are provided with beveled tooth heads at the front edge of the zipper teeth, and a corresponding tooth socket is provided on the othe...

AI Technical Summary

Problems solved by technology

[0004] In order to improve the meshing force between the tooth head and the corresponding alveolar, the size of the tooth head will be increased as much as possible, so that the base size of the tooth head is basically consistent with the thickness of the zipper. However, this design will make the zipper teeth The meshing with the zipper teeth forms only one meshing point, and only one meshing line is formed after the zipper is meshed. When the zipper is torn by a large external force from the left and right directions, especially when it is hit head-on by a sharp hard object, it has a multi-faceted The meshing point of the tooth head of the bevel will be easy to disengage continuously along the direction of the bevel, and finally the zipper will burst open, reducing the reliability of the zipper

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