Golf Club Shaft Composite Vibration Damping
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Solution Overview
Problem
Current golf club shafts, whether made of steel or fiber reinforced plastic, fail to adequately suppress vibration upon impact, resulting in a less than ideal hit feeling for golfers.
Innovation Solution
A golf club shaft composed of a composite material featuring a fiber reinforced plastic layer integrated with a rubber material layer, where the two are directly contacted without an adhesive, forming a laminate structure that absorbs impact and reduces vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If steel or fiber reinforced plastic is used for the golf club shaft, then lightweight property and strength are improved, but vibration suppression capability deteriorates
Solution Approach 1:
The patent applies composite materials by combining fiber reinforced plastic (first member) with rubber material (second member) to create a shaft body that leverages the high strength of fibers and the vibration-damping properties of rubber, resolving the contradiction between strength and vibration suppression
Solution Approach 2:
The patent applies local quality by having the rubber material specifically located in the lower portion of the shaft body where impact vibrations are most intense, allowing targeted vibration suppression without compromising overall shaft strength
2Strength
If fiber reinforced plastic layers are laminated to improve strength, then shaft strength is improved, but interlayer peeling occurs
Solution Approach 1:
The patent uses composite materials by integrating rubber material between fiber reinforced plastic layers, creating a multi-material laminate that prevents interlayer peeling through the rubber's adhesive and flexible properties
Solution Approach 2:
The patent applies the intermediary principle by using rubber material as a mediating layer between fiber reinforced plastic layers, preventing direct contact and potential peeling between rigid fiber layers while maintaining structural integrity
3Strength
If adhesive member is used to bond first member and second member, then bonding strength is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies merging by integrating the bonding function directly into the rubber material itself, which inherently bonds to both fiber reinforced plastic surfaces, eliminating the need for separate adhesive members and simplifying manufacturing
Solution Approach 2:
The rubber material performs self-service by inherently providing both structural support and bonding functionality, eliminating the need for additional adhesive components and reducing manufacturing complexity
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 integration of fiber reinforced plastic and rubber material layers in the golf club shaft provides both lightweight properties and high strength, while effectively suppressing vibration upon impact, enhancing the hit feeling and preventing peeling issues.
Implementation Method 1
a second member containing a rubber material... effectively suppressing vibration upon impact
Implementation Method 2
exhibiting impact-absorption characteristics to suppress vibration of the golf club shaft at an impact of a golf ball
Implementation Method 3
the shaft body is composed of a composite material which has: a first member containing a fiber reinforced plastic
Implementation Method 4
a first member containing a fiber reinforced plastic... provides both lightweight properties and high strength
Data Source
AI summary
Provided is a golf club shaft having a lightweight property and exhibiting impact-absorption characteristics to suppress vibration at an impact of a golf ball. A golf club shaft, including a shaft body extending in a longitudinal direction, wherein the shaft body is composed of a composite material which has: a first member containing a fiber reinforced plastic; and a second member containing a rubber material and formed to be in direct contact with the first member within at least a part of a region on the first member, and in which the first member and the second member are integrated.