Golf Club Head Weight Layout for Centered Face CG
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Solution Overview
Problem
Existing golf club heads, particularly player irons and wedges, face challenges in aligning the center of gravity with the face center while maintaining a traditional appearance, as weight distribution is biased towards the heel side, affecting shot accuracy and energy transfer.
Innovation Solution
A golf club head design incorporating a ceramic insert with a lower melting point and density, encapsulated within a steel body, redistributes weight from the hosel and heel portions to the sole and muscle portions, aligning the center of gravity closer to the face center, while maintaining a traditional look and enhancing forgiveness on off-center hits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If perimeter weighting is added to increase moments of inertia and add forgiveness on off-center hits, then forgiveness is improved, but the appearance diverges from traditional look
Solution Approach 1:
The patent applies local quality by placing weight strategically in specific locations (hosel portion and toe portion) rather than uniformly distributing it. The weight distribution is optimized locally in these regions to achieve the desired center of gravity alignment and moment of inertia properties while preserving the overall traditional appearance of the club head.
Solution Approach 2:
The patent changes the weight distribution parameters by using materials with different densities (such as tungsten inserts) and positioning them at specific locations. This parameter modification allows adjustment of the center of gravity and moments of inertia without changing the external shape or appearance of the club head.
2Shape
If weight distribution is biased toward heel side to maintain traditional look, then appearance is preserved, but center of gravity alignment with face center is compromised
Solution Approach 1:
The patent applies local quality by placing weight strategically in specific locations (hosel portion and toe portion) rather than uniformly distributing it. The weight distribution is optimized locally in these regions to achieve the desired center of gravity alignment and moment of inertia properties while preserving the overall traditional appearance of the club head.
Solution Approach 2:
The patent changes the weight distribution parameters by using materials with different densities (such as tungsten inserts) and positioning them at specific locations. This parameter modification allows adjustment of the center of gravity and moments of inertia without changing the external shape or appearance of the club head.
3Manufacturing precision
If weight is redistributed to align center of gravity with face center, then shot accuracy and energy transfer are improved, but weight distribution complexity increases
Solution Approach 1:
The patent applies the nesting principle by placing weight inserts within the hosel portion and toe portion of the club head. These inserts are nested within the existing club head structure, allowing weight redistribution without adding external complexity. The inserts are integrated into the club head body, maintaining a clean and simple overall design.
Solution Approach 2:
The patent uses composite materials by combining different materials with distinct densities (such as steel club head body and tungsten inserts) to achieve precise weight distribution. This allows the center of gravity to be aligned with the face center while maintaining a relatively simple structural design, as the weight adjustment is achieved through material composition rather than complex geometry.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design achieves improved shot accuracy and energy transfer by aligning the center of gravity within 5 mm of the face center, increasing moments of inertia, and maintaining the traditional aesthetic appeal of player-type club heads.
Implementation Method 1
a second component having a second melting point higher than the first melting point and a second density less than the first density
Implementation Method 2
redistributes weight from the hosel and heel portions to the sole and muscle portions
Implementation Method 3
encapsulating, by an investment casting process, the auxiliary component within a golf club head body comprising a primary material
Data Source
AI summary
A golf club head includes a center of gravity spaced less than 5 mm from a vertical center plane that is perpendicular to a striking face plane and extends through a striking face center. The golf club head also includes a first component having a first melting point and a first density and a second component having a second melting point higher than the first melting point and a second density less than the first density. And the second component (i) is at least partially encapsulated by the first component, (ii) extends into a hosel portion below a hosel bore, and (iii) has a mass less than about 5 g.