Golf Club Head Composite Cavities for Center-of-Gravity Control
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Solution Overview
Problem
Existing golf club heads face challenges in optimizing the center of gravity and moment of inertia, leading to suboptimal trajectory and spin rate of golf balls, and there is a need for improved materials and manufacturing methods to enhance performance.
Innovation Solution
The use of multiple materials and internal cavity structures within the golf club head, combined with filler materials, to adjust mass distribution and vibration damping, resulting in optimized swing weight, center of gravity, and moment of inertia.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple materials are used to manufacture golf club heads, then the center of gravity and moment of inertia can be optimized, but the device complexity increases
Solution Approach 1:
The patent applies composite materials by combining a metal body (stainless steel, aluminum, or titanium) with a polymer filler material (rubber or thermoplastic elastomer) to create a golf club head with optimized center of gravity and moment of inertia. The metal body provides structural integrity while the polymer filler allows precise adjustment of weight distribution, resolving the contradiction between manufacturing precision and device complexity through material composition rather than structural complexity
Solution Approach 2:
The patent implements local quality by strategically placing the polymer filler material in specific regions (cavity, recess, or chamber) within the metal body to optimize the center of gravity and moment of inertia. This localized application of different material properties allows precise control over club head performance characteristics without requiring complex multi-material construction throughout the entire structure
2Object-generated harmful factors
If multiple materials and internal cavity structures are used, then vibration damping is improved, but the manufacturing process becomes more complex
Solution Approach 1:
The patent utilizes porous or cavity-containing structures by incorporating a polymer filler material into a cavity, recess, or chamber within the metal body. This creates an internal structure that effectively dampens vibrations while maintaining a relatively simple manufacturing process using conventional techniques such as injection molding or casting, avoiding the need for complex multi-step manufacturing procedures
Solution Approach 2:
The patent applies the nesting principle by placing the polymer filler material inside a cavity or recess within the metal body structure. This nested configuration allows the vibration-damping polymer to be integrated into the club head without requiring separate assembly steps or complex manufacturing processes, as the filler is incorporated during the initial casting or molding operation
3Manufacturing precision
If filler materials are used to adjust mass distribution, then swing weight optimization is achieved, but the device complexity increases
Solution Approach 1:
The patent applies parameter changes by utilizing the polymer filler material to precisely adjust the center of gravity and moment of inertia parameters of the golf club head. By varying the amount, density, or placement of the filler material within the cavity or recess, manufacturers can optimize swing weight and performance characteristics without requiring complex multi-component structures or additional adjustment mechanisms
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
This approach enhances the overall performance of the golf club head by improving the trajectory and spin rate of the golf ball, providing better feel and sound, while maintaining structural integrity.
Implementation Method 1
The cavity wall portion may include a first interior cavity portion and a second interior cavity portion... The first interior cavity portion and the second interior cavity portion may be separated by the cavity wall portion... to adjust mass distribution and vibration damping
Data Source
AI summary
Embodiments of golf club heads, golf clubs, and methods to manufacture golf club heads and golf clubs are generally described herein. In one example, a golf club head includes a body portion with a first interior portion and a second interior portion, at least a portion of the first interior portion is separated from at least a portion of the second interior portion. The golf club also includes a mass portion coupled to the body portion below a horizontal midplane of the body portion, a port on the body portion, a first filler material at least partially filling the first interior portion, and a second filler material at least partially filling the second interior portion. The first filler material and the second filler material have at least one different physical property. Other examples and embodiments may be described and claimed.