Asymmetric Toe Loop Foot Pad for Blister Prevention
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Solution Overview
Problem
Women's fashion shoes often cause blisters due to friction and rubbing, and existing solutions fail to balance protection with maintaining a fashionable appearance and comfort.
Innovation Solution
A foot pad with a planar substrate and adjustable toe loops made from a pliable material, such as silicone, that can be securely attached to the foot to reduce friction and discomfort without being visible under open-toed heels or sandals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a foot pad is added to protect against friction and blister formation, then comfort and protection are improved, but the aesthetic appearance of the shoes deteriorates due to visibility
Solution Approach 1:
The foot pad is constructed as a thin, flexible planar substrate that conforms to the foot's contour, allowing it to provide protection while remaining inconspicuous under open-toed footwear. The substrate's thin profile and flexibility enable it to blend with the natural foot anatomy rather than protrude visually.
Solution Approach 2:
Toe loops are strategically positioned only at specific locations where toes naturally protrude under open-toed shoes, providing protection precisely where friction occurs most. This localized approach ensures coverage is applied only where needed for both aesthetic and functional reasons.
2Reliability
If toe loops are added to secure the foot pad, then reliability of attachment is improved, but device complexity increases
Solution Approach 1:
The foot pad is segmented into a planar substrate and multiple discrete toe loops that can be independently positioned and sized. This segmentation allows each toe loop to be optimized for its specific location while maintaining overall simplicity of the entire device.
Solution Approach 2:
The toe loops are designed with asymmetric characteristics, where the first toe loop has a first size, the second toe loop has a second size smaller than the first, and the third toe loop has a third size smaller than the first. This asymmetric sizing matches the natural variation in toe sizes and positions, improving fit and security without requiring complex adjustment mechanisms.
Data Source
AI summary
In described embodiments, the invention provides a foot pad having a generally planar substrate having a medial side and a lateral side and an upper surface extending between the medial side and the lateral side. A first toe loop extends upwardly from the medial side. The first toe loop has a first size. A second toe loop extends upwardly from the lateral side. The second toe loop has a second size, smaller than the first size. A third toe loop extends upwardly between the first toe loop and the second toe loop. The third toe loop is smaller than the first toe loop.