Bidirectional Waterproof Zipper With Intermediate Sealing Structure
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Solution Overview
Problem
Existing one-way luggage zippers require excessive force and long pulling distances, making them inconvenient to operate and resulting in insufficient waterproofness and air tightness due to gaps between traditional double zipper sliders.
Innovation Solution
A waterproof airtight zipper design featuring double zipper sliders with an intermediate sealing structure, where the upper and lower zipper parts are connected with stoppers and sliders, allowing bidirectional operation and ensuring sealing when sliders collide with stop blocks and protruding parts, facilitating easier opening and maintaining air tightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a one-way zipper is used, then the structure is simple, but it requires larger force and longer pulling distance making operation inconvenient
Solution Approach 1:
The zipper is divided into two independent zipper assemblies (first and second zipper assemblies), each with its own slider and tooth assembly. This segmentation allows bidirectional operation where each slider can be pulled independently, reducing the force and distance required compared to a single long zipper pull, while maintaining operational convenience.
2Reliability
If traditional double zipper sliders are used, then bidirectional operation is enabled, but gaps exist between zippers resulting in insufficient waterproofness and air tightness
Solution Approach 1:
An intermediate sealing structure is introduced between the first and second zipper assemblies. This intermediate structure includes a sealing member that fills the gap between the two zippers, acting as a mediator to prevent water and air penetration through the gap, thereby enhancing waterproofness and air tightness while maintaining bidirectional operation capability.
3Reliability
If the intermediate sealing structure is positioned between zipper sliders, then sealing effectiveness is improved, but the structure becomes more complex
Solution Approach 1:
The intermediate sealing structure is integrated with the existing zipper components. The sealing member is positioned within the intermediate structure that already exists between the two zipper assemblies, merging the sealing function with the structural framework rather than adding completely separate components, thus improving sealing effectiveness while minimizing additional structural complexity.
Data Source
AI summary
Provided is a waterproof airtight zipper with double zipper sliders, including an upper waterproof zipper part and a lower waterproof zipper part; a lower edge of the first top stopper and an upper edge of the second top stopper are fixedly connected as an integral intermediate sealing structure; the intermediate sealing structure is located between both the zipper sliders of the upper waterproof zipper part and the lower waterproof zipper part and is arranged in a disconnected manner; and an opening is formed at the intermediate sealing structure. A form of double zipper sliders is adopted to make left and right ends stressed at the same time, so that it is more labor-saving to pull open the zipper; the way of pulling open the zipper bidirectionally facilitates operation and use; and the intermediate sealing structure can ensure the air tightness effect of the waterproof sealing zipper.