Dual-Material Golf Club Face Structure for Sound and Spin Control
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Solution Overview
Problem
Existing golf club heads do not effectively enhance hitting sound and sensation while maintaining optimal weight distribution and reducing spin rate.
Innovation Solution
A golf club head design featuring a dual-material face portion with a low-density fiber-reinforced resin first part and a high-density metal second part, combined with grooves and adjustable weight components for improved sound, sensation, and spin control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single-material face portion is used, then the structure is simple, but the hitting sound and sensation cannot be effectively enhanced
Solution Approach 1:
The face portion is constructed using composite materials with different densities - a low-density first material (1.3 g/cm³ or less) and a high-density second material (more than 1.3 g/cm³ and 2.9 g/cm³ or less). This composite structure enables effective enhancement of hitting sound and sensation while maintaining structural integrity, resolving the contradiction between simplicity and sound quality.
Solution Approach 2:
The face portion is divided into different regions with different material densities - the first part uses low-density material and the second part uses high-density material. This local differentiation of material properties allows optimization of hitting sound and sensation in specific areas while maintaining overall structural simplicity.
2Reliability
If a dual-material face portion is used, then the hitting sound is enhanced, but the device complexity increases
Solution Approach 1:
The patent uses composite materials with clearly defined density ranges (first material: 1.3 g/cm³ or less, second material: 1.3-2.9 g/cm³) to enhance hitting sound while maintaining manufacturability. The specific density specifications provide clear manufacturing guidelines, reducing the complexity burden of the dual-material structure.
Solution Approach 2:
The face portion is segmented into a first part and a second part with different material densities, where the second part includes a groove. This segmentation is strategically implemented only where needed to enhance hitting sound, rather than throughout the entire club head, thus balancing complexity enhancement with performance improvement.
3Weight of moving object
If weight is increased for better sensation, then the hitting sensation improves, but the spin rate increases
Solution Approach 1:
The patent applies local quality by using high-density material specifically in the second part of the face portion where it contacts the ball, rather than uniformly increasing weight throughout. This localized density enhancement improves hitting sensation while the grooves in the second part simultaneously work to reduce spin rate, resolving the contradiction between weight and spin control.
Solution Approach 2:
The composite material structure with controlled density ranges allows precise weight management - the low-density first material keeps overall weight controlled while the high-density second material provides localized weight for sensation enhancement, and the groove structure in the second part reduces spin rate.
4Object-generated harmful factors
If grooves are added to the hitting surface, then the spin rate is reduced, but the manufacturing complexity increases
Solution Approach 1:
The grooves are implemented only in the second part of the face portion, not throughout the entire structure. This segmented approach reduces spin rate effectively while limiting the manufacturing complexity increase to only the necessary region, balancing performance improvement with manufacturing feasibility.
Solution Approach 2:
The grooves are formed in the high-density second material portion of the composite face structure. The presence of the groove in the denser material provides effective spin reduction, and the composite nature of the face portion allows for optimized manufacturing processes that accommodate the groove structure.
Data Source
AI summary
A golf club head includes a face portion that includes a first part and a second part. The first part includes a first material. The second part includes a second material, and one surface of the second part is bonded to one surface of the first part in a thickness direction of the first part. A density of the first material is 1.3 g/cm3 or less. A density of the second material is more than the density of the first material, and is 2.9 g/cm3 or less. Another surface of the second part is a hitting surface. The another surface of the second part, serving as the hitting surface, is opposite to the one surface of the second part. The second part includes a groove recessed from the hitting surface.