Golf Club Head Cavity Fillers for CG and MOI Tuning
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Solution Overview
Problem
Existing golf club heads often struggle to optimize the center of gravity (CG) and moment of inertia (MOI) for desired trajectory and spin rate, limiting performance and consistency in golf ball strikes.
Innovation Solution
The golf club head design incorporates a combination of materials and structural features, including a face portion attached to a body portion with integrated mass portions and filler materials within an interior cavity, optimized for CG and MOI through precise material distribution and attachment methods such as welding and adhesive bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple materials are used to manufacture golf club heads, then the center of gravity and moment of inertia can be optimized for desired trajectory and spin rate, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The golf club head is divided into multiple functional zones with different material properties. The face portion uses a harder material for ball contact, while the cavity and body use softer materials for vibration dampening and weight distribution. This segmentation allows optimization of CG and MOI while maintaining manufacturability through modular construction.
Solution Approach 2:
The patent employs composite material construction combining metal face portions with polymer or elastomer cavity fillers. This composite approach enables precise control over mass distribution for optimal CG positioning and MOI characteristics, while the different materials provide complementary functional benefits for performance consistency.
2Speed
If precise material distribution is used to optimize CG and MOI, then ball distance and speed improve, but the manufacturing precision requirements increase
Solution Approach 1:
The cavity filler material is pre-formed or pre-positioned within the club head cavity before final assembly. This preliminary action ensures precise material distribution for optimal CG and MOI without requiring complex real-time manufacturing controls, thereby achieving high ball speed while managing manufacturing precision requirements.
Solution Approach 2:
The patent utilizes materials with significantly different density parameters to achieve precise CG control. By selecting cavity filler materials with specific gravity values that contrast with the face portion material, the design achieves optimal weight distribution and moment of inertia characteristics through material parameter selection rather than complex geometric adjustments.
3Reliability
If integrated mass portions and filler materials are used within the interior cavity, then spin characteristics and overall consistency improve, but the device complexity increases
Solution Approach 1:
The cavity filler material serves multiple functions simultaneously: it acts as a mass portion for CG control, a dampener for vibration control, and a structural element for face support. This merging of functions reduces the need for separate components, thereby improving strike consistency while limiting the increase in structural complexity.
Solution Approach 2:
The cavity filler material is designed to perform multiple roles: weight distribution for CG optimization, vibration absorption for consistency, and structural reinforcement for face stability. This multi-functionality achieves improved spin characteristics and strike consistency without proportionally increasing device complexity, as a single material system handles multiple performance requirements.
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 design enhances the golf club's performance by optimizing ball distance, speed, spin characteristics, and overall consistency, providing a more predictable and effective golf ball strike.
Implementation Method 1
attachment methods such as welding and adhesive bonding
Implementation Method 2
attachment methods such as welding and adhesive bonding
Data Source
AI summary
Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head may include a body portion having a toe portion, a heel portion, a top portion, a sole portion, a front portion, a back portion, and an interior cavity. The interior cavity may include a central portion, a first internal channel extending from the toe portion to the central portion, and a second internal channel extending from the heel portion to the central portion. A face portion may be attached to the front portion to enclose the interior cavity. A first filler material may be in the central portion of the interior cavity. A second filler material may be in the first internal channel and the second internal channel. Other examples and embodiments may be described and claimed.