A two-way opening and closing zipper

Abstract

The invention discloses a two-way opening and closing zipper. The positioning block and the positioning teeth are located on two fabric belts, and are located at the corresponding positions in the middle of the first coupling teeth and the second coupling teeth; the positioning blocks and the positioning teeth of the same group cooperate with each other to realize two-dimensional Positioning is defined along the length direction of the fastener element and parallel to the fabric belt and perpendicular to the length direction of the fastener element to locate the starting position of the fastener element; each positioning block corresponds to a slider, and the upper bottom plate or the lower bottom plate of the slider is located on the bottom plate. The avoidance gap is set, and the avoidance gap is used to avoid the positioning teeth, so that the positioning block and the positioning teeth are positioned and matched with each other. When in use, contact the middle of the first fastener element and the second fastener element, perform two-dimensional positioning of the positioning block and the positioning element, and pull the two sliders to the two ends respectively, so that the first fastener element and the second fastener element are interdigitated. , The zipper is pulled from the middle to the two ends, and separated from the two ends to the middle. The two sides of the zipper are relatively independently controlled, and the two sliders do not need to be pulled to the end at the same time each time, and the pulling and closing operation is more convenient.

Description

technical field [0001] The present invention relates to the technical field of slide fasteners, and more particularly, to a two-way opening and closing slide fastener. Background technique [0002] A zipper is a product used on clothing, bags or other items to secure two pieces of cloth tape or other flexible material. The zipper is composed of elements, sliders, upper stop (front size), lower stop (rear size), locking parts and other components. Generally, the zipper has two pieces of chain belt, and each piece of chain belt is provided with one column of chain teeth and two columns. The chain teeth are staggered with each other. [0003] The slider clamps the fastener elements on both sides, and the slider slides along the fastener elements with the help of the pull tabs provided on it, so that the fastener elements on both sides engage or disengage each other; when the slider makes the fastener elements on both sides close to each other, mutual The zipper is engaged and...

AI Technical Summary

Problems solved by technology

[0005] The traditional double-open zipper needs to pull the two sliders to the bottom of the chain elements at the same time, and then close the zipper from the bottom to completely separate the two chain elements. It also needs to pull the two sliders to the bottom at the same time. inconvenient