Golf Club Head Adjustable Center of Gravity Weighting

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Solution Overview

Problem

Existing golf club head weighting systems do not effectively optimize the adjustability of center of gravity and moment of inertia, lacking simplicity and flexibility while also impacting the aesthetic appearance and impact sound.

Innovation Solution

A golf club head design featuring adjustable channels with protruding rails and grooves for weight placement, allowing for reversible fixation using screws or clips, and concealed or visible weight positioning through an applique, minimizing structural impact and maintaining appearance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If adjustable weighting systems are added to golf club heads, then center of gravity and moment of inertia adjustability is improved, but device complexity increases

Engineering Contradiction:
Improvecenter of gravity adjustabilityVSAvoidweighting system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The weighting system is segmented into modular components: a weight member that can be independently positioned, channels that define movement paths, and fixation mechanisms that secure the weight at desired locations. This segmentation allows the weight to be adjusted independently without redesigning the entire club head structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The weight member is extracted as a separate, movable component from the fixed club head structure. By taking the weight out as an independent element that can be positioned and fixed at different locations within the club head, the system achieves adjustability without requiring complex integrated mechanisms throughout the entire structure.

Inventive Principle:
Principle #2Taking out (Extraction)

2Adaptability or versatility

If weight adjustment mechanisms are added, then center of gravity control is improved, but aesthetic appearance deteriorates

Engineering Contradiction:
Improvecenter of gravity controlVSAvoidaesthetic appearance
Core Design Contradiction:
Adaptability or versatilityVSShape

Solution Approach 1:

The channel structure is designed with varying local qualities: some portions are concealed within the club head body where they do not affect appearance, while other portions are strategically positioned or shaped to be less visually intrusive. The weight member itself can be designed with aesthetic considerations, and the fixation mechanism is positioned to minimize visual impact on the club head's appearance.

Inventive Principle:
Principle #3Local quality

3Adaptability or versatility

If adjustable weights are implemented, then moment of inertia adjustability is improved, but impact sound is adversely affected

Engineering Contradiction:
Improvemoment of inertia adjustabilityVSAvoidimpact sound
Core Design Contradiction:
Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The channel is designed as an asymmetric, irregularly shaped pathway rather than a simple symmetric cavity. This asymmetric geometry creates unpredictable weight distribution patterns and prevents consistent resonance frequencies during impact, thereby reducing the audible impact sound while still allowing effective moment of inertia adjustment through strategic weight positioning.

Inventive Principle:
Principle #4Asymmetry

Data Source

PatentUS9694256B2Golf club head with adjustable center of gravity
Publication Date: 2017.07.04 CALLAWAY GOLF COMPANY
  • US9694256B2 patent drawing
  • US9694256B2 patent drawing
  • US9694256B2 patent drawing

AI summary

A golf club head comprising a slidable weight for adjusting the location of the golf club head center of gravity, as well as the golf club head bias, is disclosed herein. In particular, the golf club head, which may be a wood or iron-type head, comprises a pair of rails extending along at least one surface, such as a rear surface of an iron type head or a channel disposed in a wood-type head, and a slidable weight comprising a pair of grooves sized to receive the rails. In some embodiments, an applique or one or more clips are applied over or to the rails to prevent the weight from disengaging from the golf club head.