Segmented Footwear Upper and Sole Structure for Natural Motion
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Solution Overview
Problem
Conventional footwear lacks flexibility and natural foot motion, leading to reduced comfort and performance in various ambulatory activities due to its rigid upper and sole structure design.
Innovation Solution
A footwear structure comprising a plurality of disjointed segments that form a combined upper and sole structure, allowing for independent movement and articulation, with a flexible bootie interconnecting these segments to enhance flexibility and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid upper and sole structure is used in conventional footwear, then structural stability and support are improved, but flexibility and natural foot motion are reduced
Solution Approach 1:
The footwear is divided into multiple disjointed segments (toe segment, forefoot segment, midfoot segment, heel segment) that can move independently relative to each other. This segmentation allows each segment to maintain structural integrity while the entire footwear structure gains flexibility to accommodate natural foot motion during ambulatory activities.
Solution Approach 2:
The footwear structure transitions from a static, rigid configuration to a dynamic system where segments can articulate and move relative to one another. The disjointed segments are connected through flexible interfaces that allow controlled movement, enabling the footwear to adapt dynamically to foot motion while maintaining structural support.
2Ease of manufacture
If a single-piece upper and sole structure is used, then manufacturing simplicity is improved, but adaptability to foot motion and comfort are reduced
Solution Approach 1:
Rather than manufacturing a single rigid piece, the footwear is manufactured as multiple separate segments that can be produced independently using standard manufacturing processes. Each segment maintains structural integrity while the modular design enables the overall structure to adapt to foot motion, combining manufacturing simplicity with functional adaptability.
Solution Approach 2:
The disjointed segment structure serves multiple functions simultaneously: it provides structural support, enables natural foot motion, and maintains ease of manufacture through modular construction. Each segment can be optimized for its specific function while contributing to the overall adaptability of the footwear system.
3Strength
If conventional layered sole structure (insole, midsole, outsole) is used, then support and attenuation functions are improved, but flexibility and comfort are reduced
Solution Approach 1:
The traditional layered sole structure is replaced with a segmented architecture where the sole function is distributed across multiple disjointed segments. Each segment provides localized support and attenuation while the gaps and flexible connections between segments enable natural foot flexion and movement, improving both structural function and flexibility.
Solution Approach 2:
The sole structure transitions from a static layered configuration to a dynamic segmented system that can articulate with foot motion. The disjointed segments allow the sole to flex and adapt during ambulatory activities while maintaining support and ground reaction force attenuation through the structural integrity of individual segments.
Data Source
AI summary
An article of footwear may include a plurality of segments. Each of the plurality of segments may form a portion of a combined upper and sole structure. A bootie may line the combined upper and sole structure. The bootie may interconnect the plurality of segments such that the plurality of segments are independently moveable with respect to one another.