Butt-Mounted Golf Club Shaft Extension Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing golf club shafts lack a reliable and aesthetically pleasing mechanism for adjusting length without requiring a custom grip or shaft, which is crucial for accurate fitting and performance, as incorrect length can lead to significant loss in carry distance.
Innovation Solution
A shaft extension device comprising three parts – an upper part, a lower part, and a connecting device – that allows for adjustable length adjustment within the grip, enabling the shaft to be lengthened or shortened by sliding the lower part relative to the upper part, without needing a special grip or shaft, using a threaded connection and protrusions for secure engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a shaft extension device is added to adjust club length, then the adaptability for different players is improved, but the device complexity increases
Solution Approach 1:
The extension device is nested within the grip structure, with the threaded insert embedded in the grip and the extension shaft telescoping within the grip housing. This nesting approach allows length adjustment functionality to be integrated into the existing grip without adding external protruding components, thus improving adaptability while minimizing visual and structural complexity.
Solution Approach 2:
The grip serves multiple functions: it provides the standard gripping surface for the player and simultaneously houses the threaded cavity and extension mechanism. This multi-functionality eliminates the need for separate adjustment mechanisms, allowing one component (the grip) to perform both aesthetic and functional roles, thereby improving adaptability without proportionally increasing overall device complexity.
2Reliability
If a threaded connection mechanism is used for secure engagement, then the reliability of the extension is improved, but the ease of manufacture decreases
Solution Approach 1:
The connection mechanism is segmented into distinct threaded components: a threaded cavity in the grip and a corresponding threaded insert in the extension shaft. This segmentation allows each component to be manufactured separately using standard threading processes, improving reliability through precise threaded engagement while maintaining ease of manufacture by avoiding complex integrated designs.
Solution Approach 2:
The threaded insert acts as an intermediary element between the grip and the extension shaft, providing a secure mechanical connection. This intermediary component simplifies the manufacturing process by allowing pre-threaded inserts to be pressed or screwed into the grip, rather than requiring complex internal threading of the grip itself, thus balancing reliability with manufacturability.
3Shape
If the extension device is hidden within the shaft and grip, then the aesthetic appearance is improved, but the ease of operation decreases
Solution Approach 1:
The adjustment mechanism is extracted and concentrated at the distal end of the grip, where a portion of the extension shaft protrudes slightly to provide access to the adjustment threads. This extraction approach maintains the hidden aesthetic appearance for most of the device while providing a localized access point that minimizes the impact on visual appearance but maximizes ease of operation.
Solution Approach 2:
The adjustment access is provided in a different dimension than the main shaft axis - by allowing radial protrusion of the extension shaft end beyond the grip surface. This dimensional change enables operators to access the adjustment mechanism from the side rather than requiring disassembly or creating visible external controls, thus maintaining aesthetic appearance while improving operability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise adjustment of the golf club shaft length, allowing for incremental changes without altering the grip or shaft, thereby improving fit and performance by allowing golfers to maintain their natural swing arc, potentially reducing carry distance loss by ensuring accurate ball impact.
Implementation Method 1
A connecting device is provided within the upper part and extending from a second end of the upper part, a distal portion of the connecting device is threadably connected to the lower part.
Data Source
AI summary
A device designed for modifying the length of a golf club shaft. The device is a three-piece mechanism with a bottom part bonded into the top end of a tubular golf club shaft, a top part provided within the grip, a threaded screw provided within the top part and threadably connected to the bottom part such that movement of the screw will adjust the distance between the top part and bottom part thereby adjusting the club length. The extension device is hidden within the shaft and grip and does not require a custom grip or shaft.