Shoe Upper Vent Hole Structure for Controlled Stretch
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Solution Overview
Problem
Shoes with through holes in the uppers experience excessive expansion and contraction during exercise, compromising air permeability and comfort.
Innovation Solution
A shoe design featuring recessed holes in the upper with a bottom portion formed by at least two linear members of differing stretchability, integrated into the upper material to maintain air permeability while preventing excessive expansion and contraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If through holes are disposed in the uppers to enhance air permeability, then air permeability inside shoes is improved, but the rigidity of the upper portions drops causing excessive expansion and contraction
Solution Approach 1:
The hole bottom is segmented into multiple linear members (at least two) that differ in stretchability. This segmentation allows each linear member to contribute differently to the structural integrity and flexibility, maintaining rigidity while permitting controlled expansion and contraction for air permeability.
Solution Approach 2:
Different linear members with different stretchability properties are used at the same location (hole bottom). This local quality differentiation allows the structure to have both rigid and flexible characteristics simultaneously, preventing excessive expansion while ensuring air permeability.
2Object-generated harmful factors
If through holes are disposed in the uppers to enhance air permeability, then air permeability inside shoes is improved, but the uppers excessively expand and contract during exercise
Solution Approach 1:
The hole bottom is divided into multiple linear members with different stretchability characteristics. This segmentation creates a composite structure that can accommodate dimensional changes through controlled expansion of more flexible members while rigid members maintain overall dimensional stability during exercise.
Solution Approach 2:
The hole bottom uses a composite structure of at least two linear members with different stretchability. This composite approach combines materials or structures with contrasting mechanical properties, allowing the assembly to maintain dimensional stability while permitting necessary flexibility for air permeability during physical activity.
Data Source
AI summary
A shoe includes an upper that covers the instep of a foot. A hole that has a bottom and is recessed in the thickness direction of the upper is integrally formed in the upper. A bottom portion of the hole is one layer including at least two linear members that differ in stretchability.