Tear-Drop Shoe Pad for Foot Slipping Prevention
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Solution Overview
Problem
High-heeled shoes cause foot deformities like Hammertoe, Hallux Valgus, and Mallet Toe due to foot slipping, as existing anti-slip solutions do not fit well with tight or open shoes and are uncomfortable due to mismatch with the foot's sulcus.
Innovation Solution
A tear-drop shaped pad with varying widths and heights is placed between the outer and inner soles of shoes, matching the foot's sulcus to prevent slipping, made from materials like Polyurethane and Ethylene-Vinyl Acetate, and can be embedded or applied separately to the insole.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pad with uniform width and height is used, then manufacturing is simple, but it does not fit the foot's sulcus shape causing discomfort
Solution Approach 1:
The pad employs varying width and height along its longitudinal axis, with the first end having greater dimensions than the second end. This non-uniform geometry creates local quality variations that match the foot's sulcus contour, providing enhanced comfort and fit without requiring complex assembly or adjustment mechanisms.
2Adaptability or versatility
If existing anti-slip solutions are used, then slipping is reduced, but they do not fit tight-spaced closed dress shoes or open shoes
Solution Approach 1:
The pad's tear-drop shape with渐ually varying dimensions provides universal applicability across different shoe types including tight-spaced closed dress shoes and open shoes. The compact yet adaptable geometry allows effective deployment in various footwear configurations while maintaining reliable slip prevention through consistent contact with the foot's sulcus.
3Shape
If high heels are used, then fashionability is improved, but foot slipping increases causing deformity
Solution Approach 1:
The pad is positioned at the first end (front) of the shoe to preemptively counteract the forward slipping force generated by high heels. By providing frictional resistance at the critical location where the foot tends to slide, the pad prevents the harmful action of slipping before it causes deformity, allowing continued use of high-heeled footwear.
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 pad effectively prevents foot slipping and associated deformities by fitting the foot's shape, reducing discomfort and pain, and is designed to fit various shoe types, including high heels and sandals.
Implementation Method 1
a pad having a tear drop shape configured between an outer sole and an inner sole to prevent a foot from forwardly slipping
Data Source
AI summary
A shoe includes an upper part, an outer sole, an inner sole configured between the upper part and the outer sole and abutting the outer sole, and a pad having a tear drop shape. The pad is configured between the outer sole and the inner sole to prevent the foot from forwardly slipping. The pad includes a first longitudinal end part having a first width and a first height, and a second longitudinal end part having a second width and a second height. The second longitudinal end part is configured opposite to the first longitudinal end part. The first longitudinal end part is closer to the medial side than the second longitudinal end part. The pad includes a middle part connecting the first and second longitudinal end parts. The first width is larger than the second width, and the first height is larger than the second height.