Contoured Footbed Assembly With Heel Plate for Plantar Pressure Relief
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional footbeds often fail to provide adequate comfort and support due to their flat profiles or mismatched geometries with individual foot shapes, leading to reduced cushioning and increased pressure on the plantar surface.
Innovation Solution
The development of a footbed assembly with a foam layer and a rigid heel plate, designed to match the contours of the plantar foot surface, providing enhanced cushioning, comfort, and support. This design includes a non-slip material in the forefoot region and a unique heel plate cutout for improved shock absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional flat footbeds are used, then manufacturing is simple and cost-effective, but cushioning capability and pressure reduction are insufficient
Solution Approach 1:
The patent applies curvature by molding the footbed to match the natural contours of the plantar foot surface, creating a curved conformal shape rather than a flat surface. This curvature enables better pressure distribution and cushioning while maintaining manufacturing feasibility through molding processes.
Solution Approach 2:
The patent implements local quality by varying the foam density and thickness across different regions of the footbed. Specific areas receive enhanced cushioning properties tailored to local pressure requirements, while maintaining overall manufacturing efficiency through a single molded structure.
2Ease of manufacture
If standard foam footbeds are used, then cost is low, but the footbed quickly breaks down and takes compression set reducing cushioning by 75%
Solution Approach 1:
The patent employs composite materials by combining foam layers with different density characteristics and incorporating a rigid heel plate. This composite structure enhances durability and resistance to compression set while maintaining cost-effectiveness through efficient material utilization and manufacturing processes.
3Reliability
If footbeds are made to match individual foot shapes, then comfort and support are improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent achieves universality by designing a footbed geometry that conforms to the general anatomical structure of the plantar foot surface across different individuals. This universal conformal design provides personalized-like comfort and support through its ability to match foot contours while maintaining manufacturing simplicity through standardized production.
4Reliability
If thicker foam layers are used for better cushioning, then comfort is improved, but the footbed takes more space and may affect shoe fit
Solution Approach 1:
The patent applies local quality by strategically varying foam thickness and density in specific high-pressure regions rather than uniformly increasing overall foam volume. This approach provides enhanced cushioning where needed while maintaining compact overall dimensions that preserve shoe fit.
Data Source
AI summary
A footbed for use in footwear is provided. The footbed assembly includes a resilient, flexible material (e.g. EVA or PU foam) that extends the entire length of the footbed. a heel plate made from a material that is more rigid (plastic, carbon fiber) than the resilient foam attaches to the flexible material. The shape of the resilient footbed defines a geometry that provides support and comfort to the user by reducing peak pressures, improving cushioning, and enhancing foot support. The resilient foam and heel plate defines the shape of the midfoot R2 and rearfoot R1 of the footbed while the resilient flexible foam continues forward to define the shape of the forefoot R3 region of the footbed.