Golf Club Grip With Layered Compression Strain Properties
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Solution Overview
Problem
Conventional golf club grips primarily focus on providing a good feeling during hitting but neglect the importance of waggling, a pre-swing movement that helps golfers relax and align their shot, leading to a need for a grip that offers both firmness at impact and comfort during waggling.
Innovation Solution
A golf club grip with a cylindrical portion that has specific compression strain properties, ranging from 46% to 55% at 20 kg/cm2 and 63% to 69% at 120 kg/cm2, allowing for firm holding during hitting while easily deforming for comfort during waggling, achieved through a combination of material composition, thickness, and layer structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the grip is made firm for hitting, then hitting stability is improved, but waggling comfort deteriorates
Solution Approach 1:
The grip is divided into multiple layers with different material properties. The inner layer uses a foamed rubber composition with lower hardness to provide comfort during waggling, while the outer layer uses a solid rubber composition with higher hardness to ensure stability during hitting. This segmentation allows each layer to independently optimize for its specific function.
Solution Approach 2:
Different regions of the grip have different material characteristics tailored to their functional requirements. The inner layer has softer, more compliant properties for comfort during light waggling movements, while the outer layer has harder, more stable properties for firm gripping during impact. This local differentiation of material quality resolves the contradiction between comfort and stability.
2Ease of operation
If the grip is made soft for waggling, then waggling comfort is improved, but hitting stability deteriorates
Solution Approach 1:
The grip structure separates the functions of waggling comfort and hitting stability into different layers. The inner layer is optimized for softness and comfort during waggling, while the outer layer is optimized for hardness and stability during hitting, eliminating the need to compromise either function.
Solution Approach 2:
The grip uses a composite structure combining foamed rubber (inner layer) and solid rubber (outer layer). This composite material approach allows the grip to exhibit both soft and hard characteristics simultaneously in different regions, resolving the contradiction between comfort and stability.
3Ease of manufacture
If a single material is used for the grip, then manufacturing simplicity is improved, but performance balance deteriorates
Solution Approach 1:
The grip is manufactured as a multi-layer structure with distinct inner and outer layers, each made from different rubber compositions optimized for specific functions. This segmentation enables the grip to achieve balanced performance for both waggling and hitting, while the layering process remains compatible with existing manufacturing methods.
Solution Approach 2:
The grip employs composite materials consisting of foamed rubber and solid rubber in different layers. This composite approach allows the manufacturer to produce a grip with balanced performance characteristics for multiple functions (waggling comfort and hitting stability) while maintaining manufacturing feasibility through established multi-layer molding techniques.
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 grip provides a balanced feeling both during hitting and waggling, ensuring stability and comfort, as evaluated by golfers, with optimal compression properties and mechanical strength.
Implementation Method 1
the cylindrical portion has a compression strain in a range from 46% to 55% at a compression stress of 20 kg/cm2, and a compression strain in a range from 63% to 69% at a compression stress of 120 kg/cm2
Implementation Method 2
the cylindrical portion provides a good feeling both at hitting and at waggling
Data Source
AI summary
An object of the present invention is to provide a golf club grip showing a good feeling both at hitting and at waggling. The present invention provides a golf club grip comprising a cylindrical portion for inserting a shaft, wherein the cylindrical portion has a compression strain in a range from 46% to 55% at a compression stress of 20 kg/cm2, and a compression strain in a range from 63% to 69% at a compression stress of 120 kg/cm2.