Golf Club Hosel Inserts for Adjustable Loft and Lie Angles
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Solution Overview
Problem
Existing golf clubs have fixed coupling mechanisms between the club shaft and head, requiring a large number of clubs to accommodate different combinations of shafts, heads, loft angles, and lie angles, and are not adjustable for changes in user characteristics or preferences.
Innovation Solution
A golf coupling mechanism featuring a shaft sleeve with a sleeve body and cap, configured to be inserted into a hosel, and a shaft receiver with a receiver coupler set, which engages the sleeve coupler set to restrict rotation and allow for adjustable loft and lie angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If fixed coupling mechanisms are used between club shaft and head, then manufacturing and assembly are simplified, but adaptability and versatility are reduced
Solution Approach 1:
The coupling mechanism is divided into separate components: a hosel insert with internal threading and a shaft receiver with external threading. These segments can be independently manufactured and assembled, allowing for adjustability while maintaining manufacturing simplicity through modular production
Solution Approach 2:
The hosel insert and shaft receiver design allows a single coupling mechanism to accommodate multiple shaft configurations and angle settings. The threaded connection system provides universal compatibility across different club types while enabling adjustment of loft and lie angles through a standardized interface
2Adaptability or versatility
If adjustable coupling mechanisms are used to provide flexibility in setting different features, then adaptability and versatility are improved, but device complexity and stress concentration increase
Solution Approach 1:
The adjustment functionality is extracted into a separate hosel insert component that can be independently adjusted or replaced. This separates the adjustment mechanism from the main club head structure, reducing overall complexity while maintaining adjustability through a dedicated, simple threaded interface
Solution Approach 2:
The shaft receiver is positioned within the hosel insert, creating a nested arrangement where the external threaded shaft receiver fits into the internal threaded cavity of the hosel insert. This nested configuration allows multiple adjustment functions within a compact space without significantly increasing device complexity
3Adaptability or versatility
If adjustable coupling mechanisms are used to accommodate changes in user characteristics, then adaptability is improved, but stability and cohesion of the coupling are reduced
Solution Approach 1:
The hosel insert and shaft receiver are pre-threaded with precise threading patterns that ensure stable engagement. The threading is manufactured with high precision to guarantee consistent mechanical connection and stability once assembled, allowing adjustment before final tightening to achieve both adaptability and stability
Solution Approach 2:
The coupling mechanism utilizes composite construction with the hosel insert and shaft receiver made from materials optimized for both adjustability and structural stability. The threaded connection creates a composite joint that distributes stress evenly across the interface, maintaining cohesion while allowing for user-specific adjustments
Data Source
AI summary
A golf club head comprising a shaft sleeve with a shaft sleeve coupler set, a sleeve outer wall, and a cap. The shaft sleeve coupler set comprises four couplers protruding from the sleeve outer wall. Each of the four couplers comprises an arcuate surface. The golf club head comprises a hosel bore. The shaft sleeve is configured to be received by the hosel bore. The shaft sleeve and the hosel bore are non-coaxial.