Golf Club Removable Weight Locking for Low-Profile MOI Tuning
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Solution Overview
Problem
Existing golf club heads lack a removable weight system with secure attachment and a low-profile design that does not protrude into the center of the club head, affecting the location of the center of gravity.
Innovation Solution
A golf club head design featuring at least one weight receptacle and a movable or removable weight member, comprising a weight body, a spring clip, and a locking mechanism with rollers and a cam surface, allowing for secure attachment and adjustment of the weight without protruding into the club head's center.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If moveable weights are attached using threaded ports with cylindrical shapes, then the weights can be adjusted, but the cylindrical shape moves mass toward the center of the club head, reducing peripheral weight and MOI
Solution Approach 1:
The weight member is divided into multiple segments including a head portion, a body portion with a non-circular cross-section, and a peripheral portion. This segmentation allows each part to serve a specific function: the non-circular body portion prevents rotation while the peripheral portion maximizes mass distribution away from the center, thereby increasing moment of inertia while maintaining adjustability through the segmented locking mechanism.
Solution Approach 2:
The weight member employs an asymmetric non-circular cross-section in its body portion, which eliminates rotational symmetry. This asymmetry ensures that the weight member cannot rotate within the weight receptacle, allowing for precise angular positioning and optimal mass placement at the periphery of the club head, thus maximizing moment of inertia while maintaining the ability to adjust weight position.
2Adaptability or versatility
If composite structures with multiple materials are used to selectively locate mass, then mass distribution can be optimized, but the materials may be subject to delamination or corrosion over time
Solution Approach 1:
The weight member integrates multiple functional features into a single unified component: the head portion for engagement, the non-circular body portion for positioning and preventing rotation, and the peripheral portion for mass distribution. This merging eliminates the need for separate composite materials that could delaminate or corrode, while achieving optimal mass distribution through the integrated non-circular geometry that places maximum mass at the periphery.
Solution Approach 2:
The invention changes the geometric parameter of the weight member from a conventional circular cross-section to a non-circular cross-section. This parameter change fundamentally alters how the weight interacts with the receptacle, enabling precise angular positioning and optimal mass distribution without requiring multiple materials. The single-material construction maintains structural integrity while the geometric modification achieves the desired mass distribution.
3Adaptability or versatility
If a removable weight system is implemented, then weight adjustment is possible, but secure attachment without protruding into the club head center is challenging
Solution Approach 1:
The attachment mechanism is segmented into distinct functional portions: the head portion for insertion and engagement, the body portion for positioning and locking, and the peripheral portion for mass distribution. This segmentation allows the locking mechanism to operate independently at the head portion while the body portion maintains the non-circular geometry for positioning, achieving secure attachment without complex mechanisms that would protrude into the club head center.
Solution Approach 2:
The non-circular body portion acts as an intermediary between the head portion and the peripheral portion, translating the locking action at the head into precise angular positioning of the entire weight member. This intermediary geometry ensures that the weight member cannot rotate or become loose, providing secure attachment while keeping the overall mechanism compact and non-protruding within the club head structure.
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 solution provides a secure and adjustable weight system that optimizes the center of gravity without compromising the club head's structure, enhancing the golf club's performance and durability.
Implementation Method 1
a spring clip, and a locking mechanism... wherein the spring clip is biased toward the center of the weight member
Implementation Method 2
each of the rollers abuts a cam surface of the locking member... wherein the cam surface of the locking member includes a plurality of detents and a plurality of ramps
Data Source
AI summary
A golf club head includes a club head body and a weight member that is secured to the body. The weight member is constructed to utilize lateral forces to couple to the head body to minimize the structure required to retain the weight member, and the weight member is preferably constructed so that it has a low profile.