Slider Zipper Friction Reduction via Male Base Integration

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Solution Overview

Problem

Existing sliding zippers on garments suffer from high friction and noise during rotation, primarily due to the interaction between the female and male teeth, which affects the smoothness and aesthetic appeal of the garment.

Innovation Solution

The design includes a female assembly with tooth inner cavities and main sliding parts forming a slideway, and a male assembly with a male base that replaces the traditional brim, reducing friction by sliding against the female tooth instead of the brim, and incorporating limiting teeth and protruding parts to minimize contact area and enhance smoothness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If a brim is added to the hood for shielding, then the aesthetic appeal and shielding performance are improved, but the friction and noise during head rotation increase

Engineering Contradiction:
Improveaesthetic appealVSAvoidfriction
Core Design Contradiction:
ShapeVSForce

Solution Approach 1:

The patent removes the traditional brim structure from the hood and replaces it with a male assembly that integrates the shielding function directly into the zipper mechanism. The male assembly includes a male base tape and male teeth that provide the necessary structural support and aesthetic appearance without requiring an additional brim component, thereby eliminating the friction problem caused by brim-tooth contact.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent combines the brim's shielding function with the male assembly of the zipper mechanism. The male base tape and male teeth are integrated into a single structure that serves both as the zipper component and as the protective brim, eliminating the need for separate components and reducing overall friction.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of operation

If female teeth and male teeth are spaced apart to allow sliding, then the smoothness of the zipper is improved, but air and water penetration increase

Engineering Contradiction:
ImprovesmoothnessVSAvoidair and water penetration
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a female base tape as an intermediary structure between the female teeth and the fabric. The female base tape includes a base fabric and a coating layer that provides sealing functionality, preventing air and water penetration through the spaced teeth while maintaining the sliding smoothness of the zipper mechanism.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Force

If the male base covers the side surfaces of the tooth arm parts, then friction is reduced, but the complexity of the male assembly increases

Engineering Contradiction:
ImprovefrictionVSAvoidassembly complexity
Core Design Contradiction:
ForceVSDevice complexity

Solution Approach 1:

The patent merges the male base with the male teeth into a single integrated male assembly. The male base includes a base fabric and coating layer that are combined with the male teeth structure, reducing friction between the male and female components while avoiding the need for separate, complex assembly steps.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4563035A1Slider zipper and clothes
Publication Date: 2025.06.04 ZHEJIANG WEIXING IND DEV
  • EP4563035A1 patent drawingFigure 1
  • EP4563035A1 patent drawingFigure 2
  • EP4563035A1 patent drawingFigure 3

AI summary

A slider zipper and clothes. The slider zipper comprises a female-part assembly (100) and a male-part assembly (200). The female-part assembly (100) comprises female-part base tapes (110) and female-part teeth (120) arranged at intervals on the female-part base tapes (110), each female-part tooth (120) being provided with a tooth inner cavity (130) and a main sliding part (140), and the plurality of tooth inner cavities (130) and the main sliding parts (140) forming a slideway. The male-part assembly (200) comprises male-part base tapes (210) and male-part teeth (220) arranged at intervals on the male-part base tapes (210), the male-part teeth (220) comprising tooth parts (223), connecting parts (222) and male-part bases (221); the male-part bases (221) being connected to the male-part base tapes (210), the tooth parts (223) being matched with the tooth inner cavities (130), and the connecting parts (222) being matched with the main sliding parts (140), so that the tooth parts (223) may slide along the tooth inner cavities (130) arranged in sequence; the male-part bases (221) covering side surfaces of side-arm portions (122b) of the main sliding parts (140); and the left side surfaces of the male-part bases (221) being slidably connected to the right side surfaces of the female-part teeth (120). By means of connecting the male-part bases (221) with the right side surfaces of the female-part teeth (120), the male-part bases (221) replace cloth edges to rub with the female-part teeth (120), thus greatly reducing the total friction, effectively promoting the overall smoothness, and reducing the friction noise.