Interchangeable Golf Club Shaft and Head Connection System
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Solution Overview
Problem
Current golf club designs lack a convenient and aesthetically pleasing method for quickly and easily interchanging shafts and club heads with different flex characteristics, mass, center of gravity, and moment of inertia, which limits customization options for golfers.
Innovation Solution
A releasable connection system featuring a serrated hosel and tooth groove mechanism that allows for quick attachment and detachment of shafts to club heads, utilizing anti-rotation devices and threaded fasteners to secure the components without adding weight or altering the club's mass properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a threaded connection system is used to secure shafts to club heads, then the connection strength is improved, but the assembly and disassembly time increases
Solution Approach 1:
The connection system is divided into separate components: a hosel with internal threads and a shaft insert with external threads. This segmentation allows the shaft to be easily inserted and secured to the club head without requiring complex assembly procedures, thus reducing assembly time while maintaining connection strength through the threaded engagement of the segmented parts.
Solution Approach 2:
The shaft insert acts as an intermediary component between the shaft and the club head hosel. The shaft insert with external threads engages with the internal threads of the hosel, providing a strong connection while allowing for quick attachment and detachment. This intermediary component simplifies the overall assembly process and reduces the time required for both assembly and disassembly operations.
2Reliability
If multiple fastening components are added to secure the shaft, then the connection reliability is improved, but the device complexity increases
Solution Approach 1:
The connection system merges the fastening function into a single integrated threaded engagement between the hosel and shaft insert. This combining of fastening components into one unified threaded connection maintains connection reliability through secure engagement while significantly reducing the number of separate fastening parts and simplifying the overall device complexity.
Solution Approach 2:
The threaded connection system serves multiple functions simultaneously: it provides secure fastening, ensures proper alignment, and enables easy assembly and disassembly. This multi-functionality is achieved through a single threaded engagement mechanism, eliminating the need for multiple specialized fastening components and reducing device complexity while maintaining high connection reliability.
3Ease of operation
If a quick release mechanism is implemented, then the ease of operation is improved, but the manufacturing precision requirements increase
Solution Approach 1:
Instead of using a complex quick release mechanism that requires high precision, the invention inverts the approach by using a simple threaded engagement system. The shaft insert with external threads is inserted into the hosel with internal threads and secured by threading, providing easy operation through straightforward screw-on and screw-off actions while requiring standard manufacturing tolerances rather than high precision.
Solution Approach 2:
The threaded connection system is self-aligning and self-securing through the natural engagement of the threads. As the shaft insert is inserted into the hosel, the threads automatically guide alignment and secure the connection without requiring external alignment tools or high precision manufacturing. This self-service mechanism simplifies operation while maintaining ease of manufacture within standard tolerances.
Data Source
AI summary
Disclosed herein is a golf club including a shaft, a club head and several devices for releasably connecting the shaft to the club head.