Self-adjusting footwear studs for adaptive traction
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Solution Overview
Problem
Existing traction elements in footwear are static and unable to adapt to varying surface conditions and forces, leading to inadequate support and traction during different athletic movements and environments, increasing the risk of injury and requiring multiple pairs of footwear for different surfaces.
Innovation Solution
The integration of self-adjusting studs in footwear that change their traction characteristics based on the surface hardness and applied forces, allowing for adaptable traction and stability across various terrains and movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If static traction elements are used in footwear, then the structure is simple and manufacturing is easy, but the traction capability cannot adapt to varying surface conditions and forces
Solution Approach 1:
The stud is designed with a dynamic structure comprising a first portion and a second portion that can move relative to each other. The first portion is retractable relative to the second portion, allowing the stud to transition between extended and retracted positions based on surface conditions and applied forces, thereby providing adaptive traction without requiring complex external control systems
Solution Approach 2:
The stud automatically adjusts its configuration in response to surface hardness and applied forces without external control. The relative movement between the first and second portions occurs passively based on the interaction with the ground surface, enabling the stud to self-regulate its traction characteristics according to environmental conditions
2Adaptability or versatility
If static traction elements are used, then manufacturing cost is low, but multiple pairs of footwear are needed for different surfaces
Solution Approach 1:
The stud is designed to perform multiple functions by automatically adapting to different surface conditions. The same stud structure can extend on soft surfaces for enhanced penetration and retract on hard surfaces for reduced impact, eliminating the need for multiple specialized footwear pairs while maintaining manufacturing efficiency
3Reliability
If static traction elements are used, then the footwear structure is simple, but injury risk increases on hard surfaces
Solution Approach 1:
The dynamic stud structure allows the first portion to retract relative to the second portion when encountering hard surfaces, reducing the impact force and preventing injury. This automatic adjustment based on surface hardness provides reliable traction across different surface types while maintaining a relatively simple overall structure
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 self-adjusting studs provide tailored traction and increased stability, reducing the risk of injury and eliminating the need for multiple footwear pairs by automatically adjusting to different surface conditions and forces, enhancing versatility and safety.
Implementation Method 1
the first portion is compressible relative to the second portion
Implementation Method 2
the first portion is retractable relative to the second portion
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
Articles of footwear may include self-adjusting studs that adjust to various types of conditions, environmental changes, and applied forces. The self-adjusting studs may have a first portion and a second portion of different levels of compressibilities and/or retractabilities that compress and extend based on the type of surface on which the wearer is walking or running. This footwear with self-adjusting studs may easily transition between surfaces of varying hardness without causing damage to the surface, but also providing the wearer with the necessary amount of traction on each type of surface. Wearers will enjoy the benefit of being able to move on various surfaces without the need to change their footwear multiple times to accommodate the wearer's varying traction needs on different surfaces.