Zipper With Inclined Surface Teeth For Smooth Outer Lateral Contact
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Solution Overview
Problem
Existing zippers have uneven outer lateral surfaces, leading to a rough feel and potential scratching when used in garments, particularly in children's or sportswear, due to their irregularly-shaped teeth.
Innovation Solution
A zipper design featuring inclined surface teeth that form a smoothly-transitioned outer combined lateral surface, reducing uneven areas and enhancing the smoothness and appearance, with options including cambered, herringbone, or platform transitions, and a puller with adapted inner lateral surfaces for reduced friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional zipper teeth with irregularly-shaped planes are used, then the zipper can be manufactured with standard processes, but the outer combined lateral surfaces become uneven and rough
Solution Approach 1:
The patent changes the geometric parameters of the zipper teeth by introducing an inclined surface design with specific angle ranges (30-60 degrees). This parameter modification transforms the traditional irregularly-shaped planes into controlled inclined surfaces, achieving smooth outer combined lateral surfaces while maintaining manufacturability through standardized injection molding processes.
Solution Approach 2:
The patent applies curvature principles by designing the inclined surfaces with specific geometric characteristics that create smooth transitions. The inclined surfaces are configured to form cambered structures that eliminate sharp edges and irregular planes, providing a continuously smooth outer surface when zipper teeth are combined.
2Object-affected harmful factors
If conventional zipper teeth are used, then the structure is simple, but the rough uneven surfaces can scratch hands and damage garments
Solution Approach 1:
By modifying the geometric parameters of the zipper teeth to include inclined surfaces with controlled angles and dimensions, the patent eliminates sharp edges and irregular planes that cause scratching. The parameter changes ensure that the outer combined lateral surfaces are smooth, directly reducing the harmful scratch risk while maintaining reasonable structural complexity.
3Shape
If conventional zipper teeth with many small irregular planes are used, then the manufacturing process is straightforward, but the appearance is messy and feels rough
Solution Approach 1:
The patent establishes specific parameter ranges for the inclined surfaces, including angle ranges (30-60 degrees) and dimensional specifications, which transform the appearance quality from messy to smooth. These parameter controls enable consistent formation of inclined surfaces during injection molding, achieving high appearance quality without excessive precision requirements.
Data Source
AI summary
A zipper with inclined surface teeth includes a pair of zipper cloth tapes extending along an axial direction and left and right zipper teeth which are arranged on inners ides of the pair of zipper cloth tapes and can be mutually fastened, an outer combined lateral surface and an inner combined lateral surface being formed after the left and right zipper teeth are fastened, wherein from a cross section, the whole outer combined lateral surface forms a smoothly-transitioned inclined surface. When the zipper is in a fastened state, the whole outer combined lateral surface forms a smoothly-transitioned inclined surface, so that uneven areas of the outer combined lateral surface of the zipper teeth of the zipper are greatly reduced, the overall appearance of the outer combined lateral surface is optimized, and moreover, the user feels relatively smooth when touching the zipper teeth, and scratches to the hands are avoided.