Safety Shoe Toe Cap Structure for Little Toe Movement Space
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Solution Overview
Problem
Safety shoes are uncomfortable due to their thick, hard outer shells and lack of space for the little toe, leading to discomfort and potential injury.
Innovation Solution
Incorporating a protruding member on the inner side of the outer shell to create an internal space for the little toe movement, with a concave portion on the toe cap and a coupling member to secure this space, optionally with a soft member for enhanced comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the outer shell is made thick and hard to protect feet from falling objects, then protection performance is improved, but wearer comfort deteriorates due to stuffiness and lack of movement space
Solution Approach 1:
The outer shell is segmented into multiple regions: a hard outer layer for protection and a soft inner layer for comfort. The soft inner layer is further divided into a main body portion and a protruding portion that specifically addresses the little toe area, allowing differential functionality within the shell structure.
Solution Approach 2:
The inner layer is designed with different properties in different locations: the protruding portion has greater thickness and softness specifically at the little toe position to provide movement space and comfort, while other areas maintain adequate protection without excessive bulk.
2Strength
If the outer shell is made thick to protect feet, then protection performance is improved, but the shoe size and weight increase
Solution Approach 1:
The protective shell is divided into hard and soft layers, with the soft layer serving dual purposes of protection and comfort. This segmentation allows the hard layer to be optimized for minimum necessary thickness for protection, reducing overall weight while maintaining safety standards.
Solution Approach 2:
The soft inner layer is strategically thickened only at the protruding portion corresponding to the little toe area, rather than uniformly increasing thickness throughout the entire shell. This localized approach adds necessary comfort volume without proportionally increasing overall shoe weight.
3Strength
If the outer shell is made thick to protect feet, then protection performance is improved, but the shoe complexity increases
Solution Approach 1:
The shell is divided into two main layers (hard outer layer and soft inner layer), creating a manageable two-part structure that is simpler than multiple separate components. The soft inner layer integrates both protection and comfort functions in a single element.
Solution Approach 2:
The soft inner layer combines multiple functions into one component: it provides secondary protection, comfort through softness, and creates the protruding portion for little toe movement space. This merging reduces the number of separate parts needed.
4Ease of operation
If space is created for little toe movement, then wearer comfort is improved, but the internal space of the shoe is reduced
Solution Approach 1:
The protruding portion is localized specifically to the little toe area with increased thickness, while the rest of the inner layer maintains its base thickness. This localized volumetric increase provides necessary toe movement space without significantly reducing overall internal shoe capacity.
Solution Approach 2:
The protruding portion extends in the width dimension rather than requiring additional length or height, creating little toe movement space by utilizing lateral volume that would otherwise be unused, thus minimizing impact on overall internal shoe space.
Data Source
AI summary
The present invention relates to safety shoes worn on the feet of a wearer. In particular, the present invention relates to safety shoes in which space for the little toe to move is secured through the inner space of a protrusion portion, and which can thus prevent foot pain and injury and increase the comfort of a wearer.