Golf Club Head Sliding Weight Cover for Stable CG Adjustment

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Solution Overview

Problem

Existing golf club heads lack a configuration that allows for easy adjustment of the weight distribution to optimize performance based on the golfer's preferences and playing conditions.

Innovation Solution

A golf club head design featuring a detachable weight that is slidingly movable within a cavity and covered by a cover that applies a pressing force to prevent movement when closed, allowing for adjustable weight positioning and enhanced stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a weight is made detachable and slidingly movable within a cavity, then the adaptability of weight distribution is improved, but the device complexity increases due to the need for a cover mechanism and sliding structure

Engineering Contradiction:

Improveweight distribution adjustmentVSAvoidcover and sliding structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The weight is divided into a movable weight body and a fixed cover structure. The weight body can slide along a predetermined path within the cavity while the cover provides containment and positioning features. This segmentation allows independent optimization of movement capability and structural support.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The sliding weight mechanism is nested within the head cavity, with the weight body fitting inside the cover. The cover itself is integrated into the head structure, creating a compact nested arrangement that minimizes overall complexity while enabling weight adjustment functionality.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Stability of the object's composition

If the cover applies a pressing force on the weight to prevent movement, then the stability of weight position is improved, but the ease of operation deteriorates as the weight becomes harder to adjust

Engineering Contradiction:

Improveweight position stabilityVSAvoidweight adjustment

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The system transitions between dynamic and static states based on operational needs. When the cover is in the open state, the weight can move freely along its path for adjustment. When the cover is closed, it applies pressing force to stabilize the weight position. This dynamic switching between adjustment and stability modes resolves the contradiction.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The cover acts as an intermediary mechanism between the weight and the user. It provides a user-friendly interface where simple opening/closing actions control the weight's movability. The cover's pressing force stabilizes the weight without requiring complex locking mechanisms, making the system easy to operate while maintaining stability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20260000947A1Golf club head with sliding weight and cover

Publication Date: 2026.01.01 SUMITOMO RUBBER INDUSTRIES LTD

AI summary

A golf club head includes: a head body that includes a cavity; a weight that is detachably attached to the cavity; and a cover that is openably and closably attached to the head body and that covers at least a part of the cavity when the cover is in a closed state. The weight is attached to the cavity in a state where the weight is slidingly movable in the cavity. In the closed state, the cover applies a pressing force to the weight. The weight may be fixed to the cavity by a static frictional force increased by the pressing force. The cavity may form a slide groove.