Multi-layered Shoe Sole with Stitched Cushioning Pad
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Solution Overview
Problem
Existing shoe sole structures face challenges in providing durable and effective padding, especially when the sole is thin, as conventional methods often fail to resist damage from forces applied during walking or running.
Innovation Solution
A multi-layered shoe sole design with a base material having a central hole surrounded by a cushioning pad, stitched to the base material, providing additional cushioning and resistance to damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If padding is embedded in a thin shoe sole using conventional methods, then cushioning is provided, but the padding is susceptible to damage from forces applied during walking or running
Solution Approach 1:
The shoe sole is divided into multiple layers (outsole, midsole, insole) with the padding specifically positioned in the midsole layer. This segmentation allows the padding to be protected by the surrounding sole layers while maintaining a relatively simple overall structure. The padding is isolated within the midsole, preventing direct exposure to external forces from the outsole while still providing cushioning function.
Solution Approach 2:
The padding is nested within the midsole layer, which itself is nested between the outsole and insole layers. This nested structure protects the vulnerable padding material by placing it inside a protective shell (the midsole), shielding it from damage while allowing it to function effectively for cushioning.
2Ease of operation
If padding is added to enhance cushioning, then comfort is improved, but the sole structure becomes more complex and vulnerable to damage
Solution Approach 1:
The padding is strategically positioned in specific regions of the midsole where cushioning is most needed, rather than uniformly distributing it throughout the entire sole. This localized approach provides enhanced comfort in high-impact areas while maintaining overall sole integrity and minimizing structural complexity in regions where padding is not required.
Solution Approach 2:
The shoe sole utilizes composite construction with different materials for each layer (outsole, midsole, insole) and combines these with the padding material. This composite structure allows each layer to perform its specific function - the outsole provides durability, the midsole houses the padding for cushioning, and the insole provides comfort contact - while collectively maintaining sole integrity and protecting the padding from damage.
Data Source
AI summary
Provided is a shoe that has a multi-layered sole with embedded padding. More specifically, at least one of the layers includes a sheet of base material having a hole through its central region, such that the hole is surrounded by the base material, and a cushioning pad attached to the base material so as to fill the hole. In one representative embodiment, the cushioning pad is approximately the same size and shape as the hole, and the perimeter of the pad is stitched to the perimeter of the hole. As a result of such construction, padding is provided in a manner that tends to resist damage over time.