Dual-Density Insole With Molded Protrusions For Foot Support
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Solution Overview
Problem
Conventional insoles lack differential support and moisture management, leading to inadequate comfort and performance in various footwear applications.
Innovation Solution
A dual-density insole design featuring a carrier with molded geometry and multiple inserts of varying hardness levels, along with protrusions on the top surfaces, to provide enhanced support and moisture control by accommodating different foot regions and facilitating better traction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional single-density insole is used, then the structure is simple, but the foot support and comfort are inadequate
Solution Approach 1:
The insole is divided into multiple sections with different density levels. The carrier layer provides a base structure while insert layers with varying densities are positioned in specific zones (heel, arch, forefoot) to provide targeted support. This segmentation allows each region to be optimized for its specific function while maintaining overall structural integrity.
Solution Approach 2:
Different regions of the insole are assigned different material densities tailored to local requirements. The heel area receives higher density material for shock absorption, the arch area gets medium density for structural support, and the forefoot area uses lower density for flexibility. This local quality approach ensures optimal performance in each zone without uniformly increasing complexity throughout the entire insole.
2Ease of operation
If a dual-density design with multiple inserts is implemented, then the foot support is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The manufacturing process is segmented into distinct stages: first forming the carrier layer, then separately preparing insert layers with different densities, and finally assembling them in sequence. This segmentation allows each component to be manufactured using optimized processes for its specific material properties, simplifying the overall production despite the multi-component design.
Solution Approach 2:
The carrier layer serves multiple functions: it provides the base structure, acts as a platform for attaching inserts, and contributes to the overall comfort profile. This multi-functionality reduces the need for additional separate components, simplifying manufacturing while maintaining the dual-density benefit.
3Object-affected harmful factors
If protrusions are added to the top surface, then the moisture management and traction are improved, but the device complexity increases
Solution Approach 1:
The protrusions create a porous or textured surface structure that increases surface area and enhances moisture wicking capabilities. This porous geometry allows moisture to be drawn away from the foot more effectively while the same structural feature simultaneously provides traction by increasing friction between the foot and insole surface.
Solution Approach 2:
The protrusion features are integrated directly into the molding process of the carrier or insert layers rather than being added as separate components. This merging of functions allows the same structural element to provide both moisture management and traction benefits without increasing device complexity through additional parts.
Data Source
AI summary
The present disclosure relates to a dual-density insole (or sock liner) for a shoe. According to aspects set forth herein, the insole includes a carrier with two cavities. Two inserts with a density or hardness level that is different from that of the carrier are positioned in the cavities for increased performance. The disclosed insole further exhibits a molded geometry marked with shaped protrusions.