Interchangeable Golf Shaft System with Segmented Sleeve
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Solution Overview
Problem
Current golf club designs lack an efficient and aesthetically pleasing method for interchanging shafts and club heads, leading to limited customization options and increased manufacturing complexity.
Innovation Solution
An interchangeable shaft system that includes a shaft, a shaft sleeve, and a fastener, where the shaft sleeve is coupled to the shaft and partially received within the hosel bore of the club head, providing secure alignment features and anti-rotation mechanisms to ensure consistent and repeatable positioning, while allowing for adjustable loft and lie orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If traditional threaded fastening members are used to attach shaft components, then the connection is secure, but the design produces unaesthetic bulges at the top and bottom of the shaft
Solution Approach 1:
The shaft is divided into multiple segments with different diameters along its length. The intermediate portion has a first diameter that is smaller than the distal end diameter, creating a stepped configuration that eliminates bulges while maintaining structural integrity and enabling interchangeable attachments.
Solution Approach 2:
The intermediate portion of the shaft is received within the hosel of the club head, creating a nested configuration. This nesting approach allows the shaft to be securely attached while maintaining a clean, aesthetically pleasing appearance by hiding the connection mechanism within the hosel structure.
2Adaptability or versatility
If multiple complete clubs are maintained to offer different shaft and club head combinations, then customization options are provided, but the quantity of equipment increases and storage becomes problematic
Solution Approach 1:
The golf club system is segmented into separable components: club heads, shafts, and grips, each with standardized interfaces. This segmentation allows individual components to be interchanged without requiring complete clubs for each combination, reducing the total number of clubs needed while maintaining versatility.
Solution Approach 2:
A universal hosel interface design is implemented that accommodates multiple shaft types and club head configurations. The standardized connection mechanism allows a single club head to work with multiple shafts and vice versa, enabling one club to serve multiple functions and configurations.
3Adaptability or versatility
If custom fitting requires changing clubs using complicated disassembly and reassembly processes, then specific characteristics can be achieved, but the process becomes time-consuming and impractical
Solution Approach 1:
The shaft-hosel connection is designed with dynamic characteristics, allowing it to transition between a locked, secure state during play and an easily detached state for customization. The intermediate portion geometry enables quick release without complex tools or procedures, making adjustments practical and time-efficient.
Solution Approach 2:
The shaft is pre-configured with the intermediate portion geometry and distal end configuration during manufacturing, so that customization can be achieved simply by changing the shaft itself rather than disassembling and reassembling multiple components. This preliminary preparation eliminates time-consuming procedures.
4Reliability
If the shaft distal end is made larger to facilitate attachment, then connection security is improved, but the shaft diameter increases which may affect club performance characteristics
Solution Approach 1:
The shaft is designed with non-uniform diameter along its length, with the distal end having a larger diameter for secure attachment and the intermediate portion having a smaller diameter to minimize impact on club performance. This local variation in quality allows the shaft to meet both connection security and performance requirements simultaneously.
Data Source
AI summary
A golf club incorporating an interchangeable shaft system includes a shaft, a shaft sleeve, a club head. The shaft sleeve is coupled to an end of the shaft and is received in a hosel included in the club head. The shaft sleeve is removably coupled to the club head. Alignment features on the components provide discrete orientations between the shaft and club head.