Regionally Time-Dependent Golf Shoe Midsole
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Solution Overview
Problem
Golf shoes fail to provide optimal support and alignment during both walking and golf swings, as they either force unnatural foot pronation during walking or lack the necessary eversion support during a golf swing.
Innovation Solution
A golf shoe with a regionally time-dependent midsole featuring a lateral region made of an elastic material and a medial region made of a viscoelastic material, which compress differently under load to provide neutral support during walking and everted support during a golf swing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional uniform midsole material is used, then the shoe structure is simple and easy to manufacture, but the shoe cannot provide optimal support for both walking and golf swings simultaneously
Solution Approach 1:
The midsole is divided into multiple regions (lateral region, medial region, and optional midfoot region) with different materials. Each region is segmented to provide specific support characteristics for different activities: the lateral region with elastic material for golf swing eversion support, and the medial region with viscoelastic material for walking shock absorption.
Solution Approach 2:
Different regions of the midsole are assigned different material properties locally. The lateral region uses elastic material for rapid recovery and eversion support during golf swings, while the medial region uses viscoelastic material for gradual compression and shock absorption during walking, creating localized functional optimization.
2Reliability
If the midsole uses elastic material for rapid recovery, then the shoe provides good support during golf swings, but the shoe may force unnatural foot pronation during walking
Solution Approach 1:
The lateral region uses elastic material that rapidly recovers to provide eversion support during golf swings, while the medial region uses viscoelastic material that compresses gradually to allow natural foot pronation during walking, preventing harmful effects in each activity domain.
Solution Approach 2:
The patent changes the material parameter (elasticity vs. viscoelasticity) across different midsole regions to create different compression characteristics. The elastic lateral region provides rapid recovery for golf swings, while the viscoelastic medial region provides gradual compression for walking, optimizing performance for each activity type.
3Ease of operation
If the midsole uses viscoelastic material for shock absorption, then the shoe provides comfort during walking, but the shoe lacks sufficient eversion support during golf swings
Solution Approach 1:
The midsole is segmented into lateral and medial regions with different material assignments. The lateral region's elastic material provides the necessary eversion support for golf swings, while the medial region's viscoelastic material provides shock absorption for walking comfort.
Solution Approach 2:
Different local regions of the midsole have different material qualities optimized for their specific functions. The lateral region with elastic material addresses golf swing support needs, while the medial region with viscoelastic material addresses walking comfort needs, simultaneously satisfying both requirements.
4Adaptability or versatility
If different materials are used in lateral and medial regions, then the shoe provides activity-specific support, but the manufacturing process becomes more complex
Solution Approach 1:
The midsole is divided into separable regions (lateral, medial, and optional midfoot) that can be manufactured independently or as separate components and then assembled. This segmentation allows for specialized manufacturing of each material type while maintaining overall system functionality.
Solution Approach 2:
The midsole uses composite construction combining elastic and viscoelastic materials in different regions. This composite approach enables activity-specific support characteristics while allowing each material to be optimized for its specific function, balancing performance benefits with manufacturing feasibility.
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 shoe provides enhanced comfort and support by maintaining a neutral alignment during walking and optimizing foot alignment and power during a golf swing, thereby improving overall performance and reducing the risk of injury.
Implementation Method 1
a lateral region constructed of an elastic material configured to compress to a first maximum compression within a first time period
Implementation Method 2
a medial region constructed of a viscoelastic material configured to compress to a second maximum compression within a second time period longer than the first time period
Data Source
AI summary
A midsole for a golf shoe has a forefoot area, a rearfoot area, and a midfoot area between the forefoot area and the rearfoot area, and includes a lateral region constructed of a first material positioned at least in the rearfoot area, the first material being configured to compress to a first maximum compression; and a medial region constructed of a second material positioned at least in the rearfoot area, the second material being configured to compress to a second maximum compression different than the first maximum compression, wherein at least one of the lateral region or the medial region extends only part way along a mediolateral width of the midsole.