Segmented Shoe Sole Structure for Lower Joint Shear
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Solution Overview
Problem
Existing shoe soles fail to effectively distribute impact forces evenly, leading to increased shear forces on ankle and knee joints and a higher risk of sports injuries.
Innovation Solution
A sole design featuring a midsole with a follower body comprising a follower part and deformation space, optionally with a supporting piece, which allows vertical compression and horizontal deformation to equalize impact forces, distributing them more evenly and reducing horizontal shear forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional midsole materials are used for shock absorption, then vertical cushioning is improved, but horizontal shear force distribution deteriorates
Solution Approach 1:
The midsole is segmented into a midsole body and a follower body that can move relative to each other. The follower body is further divided into a follower part and a deformation space, creating distinct functional zones that separately handle vertical compression and horizontal shear forces, thereby resolving the contradiction between shock absorption and shear force reduction.
Solution Approach 2:
The follower body is designed to dynamically respond to impact forces by tilting and deforming within the deformation space. This dynamic movement allows the follower part to absorb horizontal shear forces through controlled deformation, while the midsole body maintains vertical cushioning, thus reducing joint shear forces without compromising shock absorption.
2Strength
If midsole materials compress vertically for cushioning, then shock absorption is improved, but force distribution evenness deteriorates
Solution Approach 1:
The invention introduces horizontal deformation capability to the follower body, adding a second dimension of force absorption beyond traditional vertical compression. The follower part can tilt and deform horizontally within the deformation space, distributing forces more evenly across both vertical and horizontal dimensions, thereby improving force distribution evenness while maintaining cushioning performance.
3Device complexity
If the follower part is integrated with the midsole body, then structural simplicity is improved, but deformation freedom deteriorates
Solution Approach 1:
The follower body is nested within the midsole structure, with the follower part positioned within the deformation space of the midsole body. This nested configuration allows the follower part to deform independently within the confines of the midsole body, maintaining relatively simple overall structure while preserving the necessary deformation freedom for shock absorption and shear force reduction.
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 design reduces sports injuries by minimizing horizontal shear forces on ankle and knee joints through targeted distribution of impact forces, enhancing stability and support, and facilitating even force distribution across the sole.
Implementation Method 1
the follower part is deformed by the force and tilted to the deformation space, the deformation of the follower part tilts to absorb the force
Implementation Method 2
the follower part is made of a material with a density and/or elasticity different from the density and/or elasticity of the midsole
Implementation Method 3
the midsole not only compresses and releases vertically, but also deforms and cushions horizontally
Implementation Method 4
the midsole is set on the top of the outsole, which has elasticity and can play a protective role for the foot
Implementation Method 5
Through the supporting piece's specific structure setting, it can evenly distribute the force on the bottom of the foot; enhance the support stability performance
Data Source
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AI summary
The present invention discloses a sole and a shoe, belonging to the field of shoes, a sole, comprising a midsole and an outsole, the midsole being attached to one side of the outsole, the midsole comprising a midsole body and a follower body, the follower body comprising a follower part and a follower body comprises follower part and deformation space, and follower part and deformation space are distributed adjacent to each other; the follower part is provided integrally molded with the midsole body, and the deformation space is provided on at least one of the upper surface of the midsole body, the lower surface of the midsole body, along the thickness direction of the midsole body, or along the width direction of the midsole body; or the follower part is provided separately from the midsole body and is connected to the outsole, and the follower part is separated from the midsole body by the deformation space. Alternatively, the follower part is provided separately from the midsole body and is connected to the outsole, and the follower part is separated from the midsole body by the deformation space. The sole and shoe of the present invention reduce the shear force generated at the ankle and knee joints by horizontally oriented forces and reduce the occurrence of sports injuries.