Golf Club Weight Assembly With Locked Repositionable Mass
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Solution Overview
Problem
Existing golf club designs lack secure and adjustable weight assemblies that allow for precise adjustment of the center of gravity (CG) and moment of inertia (MOI) to enhance flight characteristics such as fades, draws, launch angles, ball spin, and speed.
Innovation Solution
A golf club head with a recessed channel and a weight assembly that includes a movable weight, a cover, and a fastener, allowing the weight to be securely positioned and adjusted within the channel without direct engagement of the fastener with the weight, enabling fine-tuning of CG and MOI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the weight is directly engaged with the fastener for secure attachment, then the reliability of weight attachment is improved, but the ease of operation for selective movement is worsened
Solution Approach 1:
The weight assembly is segmented into three main components: the weight body, the cover, and the fastener. The fastener secures the cover to the club head, while the cover in turn retains the weight. This segmentation allows the fastener to provide reliable attachment without directly engaging the weight, enabling easy weight removal when the cover is detached.
Solution Approach 2:
The cover acts as an intermediary component between the fastener and the weight. The fastener indirectly retains the weight through the cover, which simplifies the mechanism for selective weight movement while maintaining secure attachment during use. The cover mediates the connection, allowing easy operation for adjustment.
2Stability of the object's composition
If the weight is securely fixed in position, then the stability of the club head is improved, but the adaptability for adjusting flight characteristics is worsened
Solution Approach 1:
The weight assembly transitions between two dynamic states: a locked state where the fastener secures the cover to the club head and the weight is firmly retained for stable performance during swinging, and an unlocked state where the cover can be detached to allow weight repositioning for adjusting flight characteristics. This dynamic design resolves the contradiction between stability and adaptability.
Solution Approach 2:
The position of the weight within the recessed channel can be changed to adjust the center of gravity and moment of inertia parameters of the club head. By moving the weight to different locations along the curved path, golfers can optimize flight characteristics such as draw, fade, and launch angle while maintaining club head stability during actual use.
3Manufacturing precision
If the fastener directly engages the weight for retention, then the manufacturing precision of the assembly is improved, but the device complexity is worsened
Solution Approach 1:
The assembly is divided into modular components (weight, cover, fastener) that can be manufactured separately with standard tolerances and then assembled. The recessed channel provides precise positioning for the weight, while the cover and fastener are simple retaining components. This segmentation achieves manufacturing precision without requiring complex integrated structures.
Solution Approach 2:
The cover serves as an intermediary that simplifies the overall assembly structure. Instead of having the fastener directly and complexly engage the weight for precise positioning, the fastener secures the cover and the cover in turn retains the weight within the precisely-formed recessed channel. This reduces device complexity while maintaining positioning accuracy.
Data Source
AI summary
An iron-type golf club head incudes a body, a recessed channel, and a weight assembly. The body includes a striking face, a sole, and a back portion positioned between the sole and the striking face. The striking face includes an upper topline edge and a lower leading edge opposite to the upper topline edge. The recessed channel is formed in the back portion and includes a plurality of dividers. The weight assembly includes a weight at least partially disposed within the recessed channel and configured to engage one of the plurality of dividers in a locked configuration.