Removable Golf Club Weight Locking for Peripheral MOI Tuning
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Solution Overview
Problem
Current golf club heads face challenges in maximizing peripheral weight and moment of inertia (MOI) due to the limitations of existing methods for selectively locating mass, which can lead to decreased performance and potential club head failure from delamination or corrosion in composite multi-material structures.
Innovation Solution
A golf club head design featuring a low-profile removable weight member with a compressible member and circumferential ramps, allowing for secure attachment and easy rotation to achieve a locked position in less than one full turn, utilizing materials with different densities to optimize mass distribution without protruding into the club head's center of gravity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If composite multi-material structures are used to selectively locate mass in club head, then mass distribution can be optimized, but the structure is subject to delamination or corrosion over time leading to decreased performance and club head failure
Solution Approach 1:
The weight member is divided into a two-piece construction with a first portion having a threaded bore and a second portion with external threads. This segmentation allows the components to be assembled together and secured to the club head body, providing a reliable connection that avoids the delamination and corrosion issues associated with composite multi-material structures while still enabling precise mass distribution.
Solution Approach 2:
The patent utilizes materials with different densities for the first and second portions of the weight member to optimize mass distribution. By carefully selecting materials with specific density parameters, the invention achieves precise control over the club head's center of gravity and moment of inertia without relying on composite structures that are prone to delamination and corrosion.
2Adaptability or versatility
If cylindrical weights with threaded ports are used to selectively locate mass, then mass characteristics can be manipulated, but the cylindrical shape and receiving features move significant portion of mass toward center of club head which does not maximize peripheral weight or MOI
Solution Approach 1:
The weight member features an asymmetric design with a low-profile configuration that extends predominantly in a first direction rather than being cylindrical. This asymmetric shape, combined with the two-piece construction, allows the mass to be positioned more effectively toward the periphery of the club head, maximizing peripheral weight and moment of inertia while maintaining adaptability for selective mass manipulation.
3Manufacturing precision
If low-profile weight member is used to avoid protruding into center of gravity, then center of gravity location is maintained, but secure attachment without protrusion is challenging
Solution Approach 1:
The two-piece construction of the weight member, with a first portion having a threaded bore and a second portion with external threads, enables secure attachment to the club head body while maintaining a low-profile design. The threaded connection provides strong mechanical attachment without requiring the weight member to protrude into the center of gravity location.
Solution Approach 2:
By utilizing materials with different densities for the two portions of the weight member, the invention optimizes the mass distribution to maintain the center of gravity location while ensuring secure attachment. The material selection allows the low-profile weight member to achieve both precise center of gravity control and strong attachment security.
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 enhances the club head's MOI and resistance to twisting during off-center impacts, improving distance and accuracy while preventing delamination and corrosion issues, thus providing a more durable and effective golfing experience.
Implementation Method 1
rotation of the weight member compresses the compressible member
Implementation Method 2
rotation of the weight member about the longitudinal axis forces the projections along the circumferential ramps
Data Source
AI summary
A golf club head including a weight mount disposed on the sole, a weight member configured to reside in the weight mount, a compressible member residing between the weight member and the weight mount, wherein the weight member comprises a longitudinal axis about which the weight member is configured to rotate, the weight member comprising projections extending radially outwards from the longitudinal axis, wherein the weight mount comprises circumferential ramps, wherein rotation of the weight member about the longitudinal axis forces the projections along the circumferential ramps, wherein the weight member goes from an unlocked position to a locked position in less than one full turn of the weight member relative to the weight mount, wherein rotation of the weight member compresses the compressible member, wherein the circumferential ramps comprise detents, wherein the projections are configured to reside in the detents when the weight member is in the locked position.