Golf Club Head Weighting Layout for MOI Balance and Ball Speed
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Solution Overview
Problem
Existing golf club designs fail to recognize the importance of Moment of Inertia (MOI) along the Z-axis (MOI-Z) and Shaft Axis (MOI-SA), leading to suboptimal performance in terms of club head speed and ball speed, despite advancements in MOI-Y and MOI-X.
Innovation Solution
A golf club head design with strategically positioned weighting members and materials that minimize MOI-Z and MOI-SA while maximizing MOI-X and MOI-Y, achieved through a specific CG location and material distribution, including a frontal portion made of steel or titanium and central body members made of high-density materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If MOI-Y and MOI-X are increased to improve forgiveness, then club head stability improves, but club head speed and ball speed deteriorate due to excessive MOI-Z and MOI-SA
Solution Approach 1:
The patent applies local quality by creating non-uniform weight distribution within the club head, specifically positioning weighting members at the heel and toe regions (local areas) rather than uniform distribution. This concentrates mass in specific locations to optimize MOI-Y and MOI-X for forgiveness while controlling MOI-Z and MOI-SA to maintain club head speed, resolving the contradiction between stability and speed.
Solution Approach 2:
The patent changes the MOI parameters by designing a specific weight distribution that achieves a particular ratio relationship among MOI-X, MOI-Y, MOI-Z, and MOI-SA. By adjusting the positioning and mass of weighting members, the patent optimizes the moment of inertia characteristics to simultaneously improve stability and maintain speed, resolving the contradiction through parameter optimization.
2Stability of the object's composition
If weighting members are added to increase MOI-Y, then forgiveness in heel-toe direction improves, but MOI-Z and MOI-SA increase causing loss of club head speed
Solution Approach 1:
The patent positions weighting members specifically at the heel and toe regions (local areas) rather than distributing weight uniformly. This localized weight concentration increases MOI-Y for heel-toe forgiveness while strategically limiting the increase in MOI-Z and MOI-SA, thereby minimizing energy loss and maintaining club head speed.
Solution Approach 2:
The patent employs asymmetric weight distribution by placing weighting members at the heel and toe regions rather than symmetric distribution around the center. This asymmetric configuration optimizes the moment of inertia characteristics to improve forgiveness in the heel-toe direction while controlling the rotational inertia about other axes to preserve club head speed and reduce energy loss.
3Stability of the object's composition
If traditional weight distribution is used to maximize MOI-Y, then heel-toe forgiveness improves, but performance in other directions deteriorates due to unoptimized MOI-Z and MOI-SA
Solution Approach 1:
The patent applies local quality by concentrating weighting members at specific heel and toe regions rather than uniform distribution. This localized approach maximizes MOI-Y for heel-toe forgiveness while strategically controlling MOI-Z and MOI-SA, thereby optimizing overall performance characteristics across different impact scenarios and improving adaptability.
Solution Approach 2:
The patent optimizes multiple MOI parameters simultaneously by adjusting the mass and position of weighting members. This creates a balanced configuration that maximizes MOI-Y for heel-toe forgiveness while optimizing MOI-Z and MOI-SA for overall performance, achieving versatile performance characteristics across different swing conditions and impact locations.
Data Source
AI summary
A golf club head that is capable improving on the inertia properties of a golf club head all while also improving the Center of Gravity (CG) location is disclosed herein. More specifically, the golf club head in accordance with the present invention achieves a relative low Moment of Inertia (MOI) about the Z-axis (MOI-Z) as well as a relatively low MOI about the Shaft-axis (MOI-SA), all combined with a high MOI about the X and Y-axis (MOI-X and MOI-Y).