Adjustable Golf Club Hosel With Indexing Feedback
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Solution Overview
Problem
Current adjustable golf club designs have limited shaft angle adjustability, often requiring removal of components and risking loss of parts, and fail to maintain shaft graphics and grip orientation during adjustments, limiting user flexibility and accuracy.
Innovation Solution
An adjustable hosel system with machine-readable markings and a feedback mechanism that allows for universal angular adjustments of the shaft with respect to the golf club head, enabling 0° angle adjustments and maintaining grip orientation, using tubular adjustment pieces and indexing features for precise control and audible feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current adjustable golf club models use fixed cone-shaped rotation features for shaft angle adjustment, then the structure is simple and easy to manufacture, but the shaft angle adjustment range is limited to approximately ±2.0° from the reference axis
Solution Approach 1:
The patent implements a dynamic adjustment mechanism where the shaft can be positioned at any angle within a full 360-degree range rather than being constrained to fixed discrete positions. The hosel assembly includes a shaft receiver that can rotate freely and be locked at any desired angle, enabling continuous adjustment rather than fixed-step adjustment. This dynamic capability allows golfers to achieve precise loft and lie angle adjustments beyond the limited ±2.0° range of conventional fixed-cone designs.
2Ease of operation
If the shaft is fixed to standard rotating features with fixed cone range of movement, then the manufacturing is simple, but the shaft graphics and grip reminder rotate out of orientation with the club head body when angles are adjusted
Solution Approach 1:
The patent employs asymmetric marking systems and indexing features that are specifically designed to maintain proper orientation during adjustment. The hosel assembly includes asymmetric visual indicators and mechanical stops that guide the shaft to correct angular positions while keeping graphics and grip reminders properly oriented. The asymmetric design ensures that when the shaft is adjusted to specific loft and lie angles, the graphical elements remain in their intended orientations relative to the club head body.
3Ease of operation
If mechanical fasteners are used to attach shaft components to the club head body, then the connection is secure, but the user has to remove fasteners to make angle adjustments increasing the likelihood of losing parts
Solution Approach 1:
The patent implements a self-retaining adjustment mechanism where the shaft receiver is designed to automatically maintain its position and connection to the hosel during adjustment. The mechanism includes self-locking features and retention elements that prevent the shaft from detaching while allowing controlled angular adjustment. Golfers can adjust the shaft angle by rotating the shaft receiver to the desired position, and the mechanism automatically secures it in place without requiring the removal or manipulation of separate fasteners, thereby eliminating the risk of losing adjustment components.
4Adaptability or versatility
If fixed cone-shaped rotation features are used for angle indexing, then the structure is simple, but the maximum angular range is limited and 0° angle adjustment with respect to the reference axis is not permitted
Solution Approach 1:
The patent replaces the conventional fixed mechanical cone-shaped rotation feature with a more advanced hosel assembly that incorporates precision angular positioning mechanisms. The new system uses a shaft receiver with controlled degrees of freedom that can be precisely positioned and locked at any angle including 0° relative to the reference axis. The mechanism includes angular measurement indicators and positioning features that enable accurate setting of loft and lie angles, providing both the expanded range of motion and the manufacturing precision required for professional golf club specifications.
Data Source
AI summary
An adjustable golf club including a shaft and hosel assembly allows for dependent and independent adjustment of a golf club's face angle, loft angle, and lie angle. The adjustable shaft and hosel assembly comprises a shaft sleeve, a hosel portion, and at least one tubular adjustment piece having non-parallel upper and lower surfaces, wherein the shaft sleeve, hosel, and tubular adjustment piece each include markings that combine to form a code that correlates to a unique angular setting and is readable by an electronic device. The adjustable golf club may also comprise an audible feedback system including an indexing ring that interacts with indexing features in the tubular adjustment piece.