Adjustable Strap Assembly for Heeled Shoe Stability
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Solution Overview
Problem
Heeled women's shoes often slip off due to imperfect fits and sweat, leading to instability and potential injuries like sprains and blisters, exacerbated by differences in foot size and shape.
Innovation Solution
A shoe strap assembly with a base-plate positioned under the shoe's shank, featuring straps that encircle the counter and upper portion of the foot, forming a loop around the heel and attaching with buckles, providing downward pull to secure the foot, made from materials like leather, rubber, or plastic, and adjustable for various heel heights and inclines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If heeled women's shoes are designed with a standard fit, then manufacturing and styling are simplified, but the shoes slip off due to differences in foot size and shape
Solution Approach 1:
The shoe system is segmented into the base shoe and a separate adjustable strap assembly. The strap assembly includes multiple straps (heel strap, toe strap, ankle strap) that can be independently adjusted to fit different foot shapes and sizes, while the base shoe maintains its standard design and manufacturing simplicity.
Solution Approach 2:
The strap assembly incorporates adjustable buckles and multiple attachment points that allow dynamic adjustment of strap length and position. This enables the same shoe to adapt to different foot dimensions and shapes while maintaining a stable base structure.
2Ease of operation
If shoes are worn several sizes larger for comfort, then foot stability is improved, but the foot slips and slides inside the shoe
Solution Approach 1:
The strap assembly applies localized pressure at specific points (heel, toe, ankle) rather than requiring a tight overall fit. This allows the foot to remain comfortable in a larger shoe size while the straps prevent slippage and maintain stable foot positioning through targeted securing points.
3Object-affected harmful factors
If shoes are worn several sizes larger to prevent injury, then foot stability is improved, but the foot moves freely causing blisters and sprains
Solution Approach 1:
The strap assembly changes the securing parameters by introducing adjustable tension and multiple contact points. This allows the shoe to maintain a loose, comfortable fit while the straps provide the necessary friction and mechanical constraint to prevent harmful foot movements that cause blisters and sprains.
Data Source
AI summary
A footwear securing device is provided. The device includes a front strap, a mid strap, a rear strap, an ankle strap, a connector strap, and a base plate; the base plate configured to attach to a sole of a shoe and comprising a front portion, a mid portion, and a rear portion, the front portion comprising a front slot, the mid portion comprising a mid slot, and the rear portion comprising a rear slot; and the front strap configured to enter the front slot, the mid strap configured to enter the mid slot, and the rear strap configured to enter the rear slot.