Triangular Golf Club Head Mass Distribution
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Solution Overview
Problem
Golf club head manufacturers face challenges in designing golf club heads with high moments of inertia while adhering to USGA regulations, often requiring trade-offs between performance characteristics such as face size and moments of inertia, which limits forgiveness and playability.
Innovation Solution
A golf club head design featuring a body with a triangular shape and specific cross-sectional areas distribution, optimized to achieve high moments of inertia about the head center of gravity axes, within the constraints of USGA regulations, thereby enhancing forgiveness and playability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the distance of head mass away from the center of gravity axes is increased to achieve high moments of inertia, then forgiveness and playability are improved, but the USGA dimensional constraints (volume, envelope dimensions) are violated
Solution Approach 1:
The patent applies parameter changes by optimizing the cross-sectional area distribution along the depth of the club head. Specifically, it defines cross-sectional areas at different positions (front, middle, rear) and establishes mathematical relationships between these areas to achieve the desired moment of inertia while maintaining compliance with USGA volume and dimensional constraints. The cross-sectional area at the front is related to the middle cross-sectional area by a specific ratio, and the rear cross-sectional area is related to the middle cross-sectional area by another ratio, creating a optimized mass distribution profile.
Solution Approach 2:
The patent applies local quality by varying the cross-sectional area at different locations along the depth of the club head. Instead of a uniform cross-section, it creates a non-uniform distribution where the cross-sectional area changes from the front to the rear of the head. This localized variation in cross-sectional area allows for optimized mass distribution that increases moment of inertia without increasing overall volume, as each region contributes differently to the overall moment of inertia based on its position relative to the center of gravity.
2Area of stationary object
If the face size is increased to improve ball striking surface area, then playability is improved, but the moment of inertia decreases
Solution Approach 1:
The patent applies another dimension by moving the optimization focus from just the face area (two-dimensional) to the three-dimensional cross-sectional area distribution along the depth of the head. Instead of simply increasing face area, it optimizes the cross-sectional areas at multiple positions along the depth axis, creating a volumetric mass distribution that simultaneously achieves high moment of inertia and adequate face size. This three-dimensional approach allows the face to be sized appropriately while mass is distributed optimally throughout the head volume.
Data Source
AI summary
A high forgiveness wood-type golf club head comprises a body and a face. The body comprises a sole that forms a bottom portion of the golf club head, a crown that forms a top portion of the golf club head and a skirt that forms a periphery of the golf club head between the sole and the crown. The face place is positioned at a front portion of the golf club head opposite a rear portion of the golf club head. The body defines an outer periphery having a generally triangular shape in plan.