Separable Aft Golf Club Head for MOI and CG Balance
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Solution Overview
Problem
Existing golf club designs fail to optimize Moment of Inertia (MOI) characteristics, particularly MOI-Z and MOI-SA, and Center of Gravity (CG) location, leading to suboptimal performance in terms of club head stability and forgiveness during off-center impacts.
Innovation Solution
A golf club head design with a frontal portion made of high-density material and a rear portion made of low-density material, featuring strategic CG location and weighting members, along with a modular attachment mechanism allowing for adjustable configurations to enhance MOI-Y to MOI-Z ratio and CG positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the MOI of the golf club head is increased to improve forgiveness and stability, then the club head resists rotational movement better upon impact, but the club head weight increases and CG location becomes less controllable
Solution Approach 1:
The golf club head is divided into multiple segments including a crown, toe, heel, and rear portion, with each segment capable of independent adjustment. This segmentation allows the MOI to be optimized through strategic placement of weight in different segments without uniformly increasing the entire club head weight, thereby maintaining stability while controlling overall weight.
Solution Approach 2:
Different portions of the club head are assigned different weight characteristics through adjustable weight members positioned in specific locations (crown, toe, heel, rear portion). This local quality approach allows precise control of MOI and CG location by concentrating weight in specific areas rather than distributing it uniformly, improving stability without excessive weight increase.
2Reliability
If weighting members are added to control MOI and CG location, then club head stability and forgiveness improve, but the device complexity increases
Solution Approach 1:
The weight members are designed to be adjustable and repositionable within the club head structure, allowing the MOI and CG characteristics to be dynamically modified. This dynamic capability enables the club head to be optimized for different playing conditions and shot types without requiring multiple fixed designs, thereby improving stability while managing complexity through adaptability.
Solution Approach 2:
The adjustable weight members serve multiple functions: controlling MOI, positioning CG, and adapting to different playing conditions. This multi-functionality reduces the need for separate components for each function, thereby improving club head stability without proportionally increasing device complexity.
3Speed
If the MOI-Z and MOI-SA are optimized for better performance, then club head speed and ball speed increase, but the manufacturing precision requirements increase
Solution Approach 1:
The adjustable weight members allow MOI-Z and MOI-SA to be optimized after manufacturing rather than requiring precise manufacturing to achieve exact MOI values. This dynamic adjustment capability decouples manufacturing precision requirements from performance optimization, enabling high club head and ball speeds without excessively stringent manufacturing tolerances.
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) and maintaining a consistently and relatively low CG location measured along a direction tangent to the hosel axis along the X-Y plane (CG-B). The golf club head includes a frontal portion and a rear portion which may be secured together with rotational motion.