Shoe Sole Composite Structure for Cushioning Stability
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Solution Overview
Problem
Existing shoe sole designs fail to effectively restore the cushioning property after deformation from external forces and do not utilize solid-form soft members with specific gravity of 0.31 to 1.2 and Asker C hardness of 20° to 45°, which are essential for high cushioning and stability.
Innovation Solution
A shoe sole structure featuring a solid-form soft member with a specific gravity of 0.31 to 1.2 and Asker C hardness of 20° to 45°, wrapped by an outsole with a thermoplastic resin component, where the soft member is in contact with the inner surfaces of the lid and outsole, enhancing energy absorption and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a soft member with low Asker C hardness (20° to 45°) is used to increase cushioning property, then the cushioning effect is improved, but the shoe sole becomes too soft and loses stability
Solution Approach 1:
The patent uses a composite structure combining a soft member (Asker C hardness 20° to 45°) with a outsole having specific physical properties (Asker C hardness 40° to 70°, thickness 2mm to 10mm). This composite material approach allows the soft member to provide cushioning while the outsole maintains structural stability, resolving the contradiction between softness for cushioning and hardness for stability.
2Loss of energy
If the soft member is made softer to enhance energy absorption, then the cushioning effect is improved, but the restoration speed after deformation decreases
Solution Approach 1:
The patent optimizes the physical parameters of both the soft member and outsole. The soft member has Asker C hardness of 20° to 45° for energy absorption, while the outsole has Asker C hardness of 40° to 70° and thickness of 2mm to 10mm. These parameter changes allow the system to absorb energy effectively while maintaining restoration speed through the supportive outsole structure.
3Stability of the object's composition
If a thicker outsole is used to protect the soft member from excessive deformation, then the stability is improved, but the weight of the shoe sole increases
Solution Approach 1:
The patent specifies the outsole thickness within the range of 2mm to 10mm and Asker C hardness of 40° to 70°. This optimized parameter range provides sufficient protection and stability for the soft member while minimizing the weight increase, avoiding excessive thickness that would add unnecessary weight.
4Stability of the object's composition
If the soft member is wrapped tightly by the outsole to suppress deformation, then the stability is improved, but the cushioning effect is reduced
Solution Approach 1:
The patent employs a composite material system where the soft member (Asker C hardness 20° to 45°) is integrated with the outsole (Asker C hardness 40° to 70°, thickness 2mm to 10mm). This composite structure allows controlled interaction between the materials, providing stability through the outsole while preserving the cushioning properties of the soft member through proper material selection and integration.
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 proposed structure achieves high cushioning properties while maintaining stability by suppressing excessive deformation of the soft member, allowing for efficient energy absorption and quick recovery, thus enhancing running ability and reducing the weight of the shoe sole.
Implementation Method 1
enhancing energy absorption and quick recovery
Implementation Method 2
allowing for efficient energy absorption and quick recovery
Implementation Method 3
suppressing excessive deformation of the soft member
Data Source
AI summary
A shoe includes: a shock-absorbing member formed from a foam body including a thermoplastic resin; a solid-form soft member including a polymer resin, having a greater weight per unit volume and a lower hardness than the shock-absorbing member, and having a smaller volume change per unit volume, than the shock-absorbing member, for a change in external pressure within a predetermined external pressure range; and an outsole including a thermoplastic resin, having a tread surface, and rolled up upward along at least a part of an outer edge thereof, thereby defining an accommodating portion to accommodate the soft member between the outsole and the lid, wherein: the shock-absorbing member forms the lid to lid the soft member from a side of an upper; and the soft member is wrapped in the accommodating portion, being in contact with at least a part of inner surfaces of the shock-absorbing member and the outsole.