Reinforced Hollow Golf Club Face for Buckling Resistance
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Solution Overview
Problem
Thinning the face of a golf club head to increase flexibility and redistribute mass results in increased bending and potential buckling, leading to failure.
Innovation Solution
Incorporating a reinforcement element, such as a looped rib, on the rear surface of the face element within a closed internal cavity to maintain flexibility and prevent buckling, allowing for thinner face design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the face of the club head is thinned to increase flexibility and redistribute mass, then the coefficient of restitution and ball speed are improved, but the face becomes prone to buckling and failure
Solution Approach 1:
The face is divided into two functional zones: a thinner central region for energy transfer and a thicker peripheral region for structural support. This segmentation allows the face to simultaneously achieve high coefficient of restitution in the impact zone while maintaining buckling resistance at the boundaries through increased thickness and reinforcement elements.
Solution Approach 2:
Different thicknesses and material properties are applied to different regions of the face. The central impact area has optimized thinness for flexibility and energy transfer, while the peripheral regions and areas adjacent to scoring lines have increased thickness for structural integrity. This local quality variation resolves the contradiction between overall face flexibility and localized buckling resistance.
2Speed
If the face of the club head is thinned to increase flexibility, then the ball speed is improved, but the face is more prone to bending and buckling
Solution Approach 1:
The face structure is segmented into a thin central zone that flexes for ball speed and thicker peripheral zones that resist bending. This allows the face to achieve the flexibility needed for high ball speed while the segmented thicker regions provide the bending resistance necessary to prevent failure.
Solution Approach 2:
The face incorporates multiple materials or material configurations with different mechanical properties. The central region uses materials optimized for flexibility and energy transfer, while peripheral regions use materials with higher strength and stiffness to resist bending and buckling, creating a composite structure that balances speed and strength.
3Shape
If scoring lines are added to the face for aesthetic purposes, then the visual appeal is improved, but the face becomes more susceptible to failure at the scoring lines
Solution Approach 1:
The face structure is locally modified at the scoring line regions with increased thickness and reinforcement elements. This local quality change provides additional structural support precisely where the scoring lines create stress concentration, allowing the aesthetic scoring lines to be present without compromising face integrity or increasing failure susceptibility.
Solution Approach 2:
Reinforcement elements are pre-positioned at the scoring line locations during manufacturing, before the face undergoes use. This preliminary action of adding structural support at vulnerable locations prevents the development of cracks or failures at the scoring lines while maintaining the desired aesthetic appearance.
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
Enhances ball speed, launch angle, and reduces spin while maintaining durability, with improved moment of inertia and forgiveness characteristics.
Implementation Method 1
Incorporating a reinforcement element, such as a looped rib, on the rear surface of the face element within a closed internal cavity to maintain flexibility and prevent buckling
Implementation Method 2
Thinning the face of a golf club head to increase flexibility and redistribute mass results in increased bending
Data Source
AI summary
Some embodiments include hollow body club heads having reinforced club head faces. In one example, the club face comprises a reinforcement element such as a looped rib positioned on a rear surface of the club face to provide reinforcement. The club head defines a closed interior cavity, where the reinforcement is located within the closed interior cavity. The hollow body club head further comprises a rear including a plurality of walls to allow the club head to easily bend during a golf ball impact. The combination of the hollow body design and the reinforcement element reinforces the club head while permitting the club face to bend. Other embodiments of related club heads and methods are also disclosed.