Geometric Cushioning Sole With Elastomeric Pillars for Shock Absorption
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Solution Overview
Problem
Existing footwear fails to adequately cushion and support the foot, leading to soreness, fatigue, and potential injuries due to inadequate shock absorption, particularly in polymer foam-based midsoles which suffer from dynamic fatigue and increased manufacturing costs.
Innovation Solution
A sole structure comprising a web and a plurality of pillars made of elastomeric material that flex and deform upon compressive force, returning to their original shape, providing shock absorption and cushioning without relying on polymer foam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polymer foam-based midsoles are used for cushioning, then shock absorption is provided, but dynamic fatigue occurs and manufacturing costs increase
Solution Approach 1:
The patent changes the material parameter from polymer foam to elastomeric material, which fundamentally alters the cushioning mechanism. The elastomeric material maintains shock absorption capabilities while eliminating dynamic fatigue issues and reducing manufacturing complexity, directly resolving the contradiction between durability and manufacturing ease
Solution Approach 2:
The sole is segmented into multiple functional layers including a first sole member with cushioning elements, a second sole member, and an outsole. This segmentation allows each layer to perform specific functions optimally, with the elastomeric material concentrated in the cushioning-critical first sole member, improving durability while simplifying manufacturing by assigning materials based on functional requirements
2Reliability
If polymer foam-based midsoles are used for cushioning, then shock absorption is provided, but the material requires more complex manufacturing processes
Solution Approach 1:
The patent merges the cushioning function with the structural support function in the first sole member made of elastomeric material. This consolidation eliminates the need for separate polymer foam midsole layers, reducing manufacturing process complexity while maintaining reliable shock absorption through the integrated elastomeric structure
3Ease of operation
If traditional sole structures are used, then basic support is provided, but adequate cushioning and shock absorption are not achieved
Solution Approach 1:
The patent applies local quality by concentrating the elastomeric cushioning material specifically in the first sole member where shock absorption is most needed, while other sole layers provide structural support. This localized application of different material properties achieves adequate cushioning without compromising overall foot support, resolving the contradiction between support comfort and shock absorption effectiveness
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 elastomeric pillars effectively absorb shock, offering superior cushioning and support, minimizing material use and reducing manufacturing costs while maintaining resilience over time.
Implementation Method 1
the first web and the plurality of first pillars of the first sole member are unitary and made of a first elastomeric material having a first modulus of elasticity configuring the plurality of first pillars to flex or deform upon an application of a compressive force by the wearer and return to their original shape upon a removal of the compressive force
Data Source
AI summary
An article of footwear includes an upper and a sole coupled to the upper. The sole includes an insole for receiving a foot of a wearer and a sole member disposed below the insole to support the foot of the wearer. The sole member includes a web extending along a length of the sole and a plurality of pillars projecting upwardly from the web toward the insole. Each of the pillars includes a curved sidewall and a lid extending from an upper end of the curved sidewall. The curved sidewall and the lid define a cavity. The web and the plurality of pillars of the sole member are unitary and made of an elastomeric material that allows the pillars to flex or deform at a compressed state and return to an upright position at a relaxed state.