Semicircular zipper tooth

Abstract

A semicircular-tooth zipper has unique structure and firm meshing and locking and is very hard to tear apart by large tearing force in two dimensional directions; however, in bending a zipper of the prior art, zipper teeth that mesh with each other may be separated in burst form, which is due to the fact that when the zipper is under bending, the zipper teeth meshing on two zipper strips may squeeze each other as their ends bear force; a gap is reserved between shoulders of every two adjacent zipper teeth on the same zipper strip, and the gaps destabilize the mutual meshing structures when the zipper is under squeezing; meanwhile, the meshing structures allow poorly tight meshing of the zipper teeth, which may lead to the zipper teeth bursting apart. The invention is mainly intended to provide a semicircular zipper tooth which changes the meshing structures so that the zipper teeth may mutually mesh more tightly under the action of various external forces, especially U-shaped squeezing force, with separation rarely occurring.

Description

technical field [0001] The invention relates to the technical field of zippers, in particular to a semicircular zipper element. Background technique [0002] The design of the semicircular tooth zipper structure is unique. When the zipper teeth mesh with each other, the intermeshing zipper teeth are semicircular, and when they mesh with each other, they are double meshed and locked. The first tooth recess of the zipper tooth and the second tooth of the other zipper tooth The concave parts are engaged with each other, the first positioning part and the second positioning part of the zipper element are locked and locked with the positioning groove of another element, which engages and locks the elements in two dimensions, so that the interacting elements mesh The ground is tighter, and the mutually meshed zipper teeth are not easy to disengage even under the tearing of a large external force from the left and right directions. [0003] In the prior art, such as CN106165946A i...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, such as CN106165946A is the product designed by the applicant, although the semicircular tooth zipper has a unique structure, and the engagement is locked and fastened, and it is difficult to tear the zipper even with a large tearing force in two dimensions. In the process of being tested, it is found that this technology has a defect, when the zipper of the prior art is bent, for example, when the zipper is folded into a "U" shape, if the force of extrusion is continued to be applied to the U-shaped bottom, it will The intermeshed chain teeth are disengaged in an explosive manner. The applicant found that this is because when the zipper is folded into a "U" shape, the two ends of the intermeshed zipper teeth on the inner two chain belts at the bottom of the "U" shape The parts are squeezed together by force, but there is still a gap between the upper shoulders of two adjacent zipper teeth on the same chain belt on the inner side of the "U"-shaped bottom. This gap causes the zipper to be squeezed by the U-shaped When the force is applied, the meshing structure of the chain elements is unstable. At the same time, the structure of the meshing part makes the zipper teeth not fastened when meshing, and the phenomenon of "burst" of the zipper occurs.

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