Recessed-point round-end S type tooth structure

Abstract

The invention discloses a recessed-point round-end S type tooth structure. The structure is characterized in that a tooth head on one end of a tooth particle body is round; a projecting tooth point and a concave tooth recess are respectively formed on the upper surface and the lower surface of the tooth head; a recess is formed on the tooth point surface adjacent to the central part; a tooth foot is equipped on the other end of the tooth particle body; a zipper strip clamping groove is equipped on the tooth foot; at least two zigzag-shaped projections are equipped on the two side walls of the zipper strip clamping groove; one zigzag-shaped projection is located on the groove wall adjacent to the central part; and the other zigzag-shaped projection is located on the groove wall adjacent to the groove opening. The recessed-point round-end S type tooth structure has a generally reasonable structural design and a smooth surface plane. The zipper tooth foot with a radian enables a smooth drawing sense. A tooth-shaped structure which is located on a cloth center line makes zipper teeth and cloth ribs perpendicular in real use and thus enhances the occlusal force between zipper teeth and cloth strips. The recess on the center of the tooth head effectively reduces the large-area friction between the tooth head and the tooth recess and enables a smooth, light and convenient drawing sense. Meanwhile, the average drawing force can be up to 690 Newton. The structure provided in the invention has excellent practicality.

Description

technical field [0001] The invention relates to the technical field of zippers, in particular to a concave-point round-head S tooth structure, and in particular to its mechanical connection structure. Background technique [0002] The existing common zipper teeth have the following disadvantages: 1. There are obvious cut marks on the surface, and the surface is rough; 2. The chain teeth are prone to skewing, and the perpendicularity to the cloth tape is not enough; The angle is uneven; 4. The single tooth is thick, the tooth head is thick, and the contact surface with the tooth concave is too large; the flat tensile strength is about 639 Newtons. Contents of the invention [0003] The object of the present invention is to provide a concave-point round-head S tooth structure, in which a depression is formed in the middle of the surface of the tooth point, which effectively reduces the large-area friction between the tooth head and the tooth concave, so that the pulling feel...

AI Technical Summary

Problems solved by technology

[0002] The existing common zipper teeth have the following disadvantages: 1. There are obvious cut marks on the surface, and the surface is rough; 2. The chain teeth are prone to skewing, and the perpendicularity to the cloth tape is not enough; The angle is uneven; 4. The single tooth is thick, the tooth head is thick, and the contact surface with the tooth concave is too large; the flat tensile strength is about 639 Newtons

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