Golf Club Head Weight Distribution via Segmented Specific Gravity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Golf club manufacturers face the challenge of increasing the lateral moment of inertia without exceeding the maximum allowed head volume, as previous methods to increase head volume are no longer viable due to Golf Rules limitations.
Innovation Solution
A hollow golf club head structure composed of three parts with different specific gravities, where the intermediate member with the smallest specific gravity is enlarged to increase the mass of the front and rear members, allowing for a deeper center of gravity and improved weight distribution without increasing head volume, achieved by using materials such as titanium alloys for the front and rear members and carbon fiber reinforced resin for the intermediate member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If head volume is increased to increase lateral moment of inertia, then moment of inertia is improved, but head volume exceeds the maximum allowed by Golf Rules
Solution Approach 1:
The club head is divided into three separate members (front member, intermediate member, and rear member) that are assembled together. This segmentation allows each member to be optimized independently for weight distribution, enabling increased lateral moment of inertia while maintaining compliance with head volume limits through strategic material placement rather than simply enlarging the overall head volume.
Solution Approach 2:
Different members are made from materials with different specific gravities (front member: ρ1, intermediate member: ρ2, rear member: ρ3 where ρ3>ρ1>ρ2). This local quality variation allows precise control over weight distribution within the limited volume, concentrating mass in strategic locations to maximize lateral moment of inertia without increasing overall head volume.
2Stability of the object's composition
If mass is concentrated in front member to increase moment of inertia, then moment of inertia is improved, but weight balance between front and rear of head deteriorates
Solution Approach 1:
The use of three members with different specific gravities (ρ3>ρ1>ρ2) enables differential mass distribution. The rear member uses the densest material (ρ3) to provide sufficient rearward mass, while the front member uses lighter material (ρ1), and the intermediate member uses the lightest material (ρ2). This local quality variation achieves both increased moment of inertia and proper front-rear weight balance simultaneously.
Data Source
AI summary
A hollow golf club head is disclosed, wherein a front member including a face portion and a hosel portion of the club head is made of a material having a specific gravity ρ1; a rear member forming a backmost point of the club head is made of a material having a specific gravity ρ2; and an intermediate member extending annularly through in a crown portion, a sole portion and a sidewall portion of the head is made of a material having a specific gravity ρ3; and the specific gravity ρ3 is more than the specific gravity ρ1 which is more than the specific gravity ρ2.