Waterproof Zipper Pull Garage Seal Design
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Solution Overview
Problem
Existing zipper pull systems allow water penetration at the top stop, even in water-resistant and waterproof zippers, making them impractical for everyday use and prone to leaks.
Innovation Solution
A zipper pull system with a 'garage' structure at the top stop that forms a snug seal with a gasket or clasp, preventing water ingress by fitting into an opening and using a rubber or plastic seal to create a waterproof interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional zipper pull system is used, then the zipper is easy to operate, but water penetrates at the top stop
Solution Approach 1:
The zipper pull system is segmented into distinct functional components: the garage structure that forms the seal, the gasket material that provides the waterproof barrier, and the pull tab that enables operation. This segmentation allows each component to be optimized for its specific function while maintaining overall system performance.
Solution Approach 2:
A gasket material acts as an intermediary element between the garage structure and the external environment, providing the actual waterproof seal. The gasket mediates between the structural components and the water, preventing penetration while allowing the zipper to remain operable.
2Reliability
If a waterproof seal is added to the zipper pull, then water resistance is improved, but device complexity increases
Solution Approach 1:
The garage structure and the seal-forming components are merged into a single integrated assembly at the top stop. The garage housing incorporates the opening and the gasket is integrated within this structure, eliminating the need for separate waterproofing components and reducing overall system complexity.
Solution Approach 2:
The garage structure serves multiple functions simultaneously: it provides the seal-forming opening, houses the gasket, and integrates with the slider assembly. This multi-functionality reduces the number of separate components needed, thereby reducing complexity while maintaining water resistance.
3Reliability
If a snug seal is formed at the top stop, then water penetration is prevented, but manufacturing precision requirements increase
Solution Approach 1:
The gasket is made from a flexible material that can deform and conform to the garage opening and surrounding surfaces. This flexibility compensates for minor variations in manufacturing tolerances, allowing a reliable seal to be formed without requiring extremely tight precision in the machining or molding of the garage components.
Solution Approach 2:
The seal formation relies on the physical properties of the gasket material, such as its elasticity and compressibility, rather than on precise dimensional tolerances. By changing the approach from rigid precision fitting to flexible parameter-based sealing, the manufacturing precision requirements are significantly reduced.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The zipper pull system effectively seals water out, enhancing the water resistance of conventional zippers without increasing cost or complexity, making them suitable for everyday use.
Implementation Method 1
a portion of the zipper pull is shaped to form a seal within the opening of the garage
Data Source
AI summary
A zipper pull, a head portion of which is structurally configured to fit snugly into a housing structure (referred to as a “garage”) is located at the top stops of an otherwise conventional waterproof or water resistant zipper. The garage and zipper pull thereby forming form a water resistant seal to eliminate any chance of water penetration in water resistant and waterproof zippers.