Golf Club Hosel Insert for Adjustable Loft and Stability
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Solution Overview
Problem
Golf clubs with fixed coupling mechanisms require a large number of variations to accommodate individual characteristics and preferences, and existing adjustable mechanisms can introduce instability and stress concentrations, limiting flexibility and cohesion.
Innovation Solution
A golf club head with a shaft sleeve and hosel bore system featuring a sleeve coupler set and receiver coupler set that restricts rotation, allowing for adjustable loft and lie angles through a secure fastening mechanism, minimizing mass and maximizing contact area for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If adjustable coupling mechanisms are used to provide flexibility in changing club features, then adaptability is improved, but stability deteriorates due to instabilities and stress concentrations at the coupling
Solution Approach 1:
The hosel is divided into multiple functional segments: a hosel body, a separate insert received within the hosel bore, and a shaft sleeve. This segmentation allows the insert to provide adjustable features (loft, lie angle) while the hosel body maintains structural stability. The insert acts as an independent adjustable component that can be configured without compromising the overall coupling stability.
Solution Approach 2:
An insert is introduced as an intermediary element between the hosel and the shaft sleeve. This insert serves as a mediator that provides adjustment capabilities (through different insert configurations) while being contained within the hosel bore, thus preventing direct exposure of adjustment mechanisms to external stresses and maintaining coupling stability.
2Adaptability or versatility
If multiple golf clubs with fixed coupling mechanisms are manufactured to accommodate individual characteristics, then adaptability is improved, but device complexity increases due to the large number of variations required
Solution Approach 1:
The hosel assembly with insert and shaft sleeve creates a universal coupling mechanism that can accommodate multiple shaft and head combinations through adjustment. Instead of manufacturing separate fixed-coupling clubs for each configuration, a single hosel assembly design can be adjusted to provide multiple loft and lie angle configurations, reducing the number of club variations needed.
Solution Approach 2:
The coupling mechanism transitions from fixed to dynamically adjustable. The shaft sleeve can be positioned at different locations along the hosel bore, and the insert can be configured in different orientations, enabling the same physical assembly to provide multiple club specifications without requiring multiple different club designs.
3Strength
If a secure fastening mechanism is used to minimize stress concentrations, then strength is improved, but device complexity increases due to additional parts
Solution Approach 1:
The fastening function is merged with the structural components of the hosel assembly. The shaft sleeve itself serves as both a structural element and a fastening mechanism, utilizing friction and geometric interlocking within the hosel bore rather than requiring separate fasteners. This integration provides secure fastening while minimizing the number of discrete parts.
Solution Approach 2:
The hosel assembly is designed to self-fasten through the interaction between the shaft sleeve and hosel bore. The geometry of the components creates natural friction and mechanical interlocking that secures the connection without requiring additional fastening elements, thus achieving strength without increasing part count.
Data Source
AI summary
A golf club head includes a hosel and a shaft sleeve insertable into the hosel, A shaft sleeve body of the shaft sleeve, the shaft sleeve body includes an outer wall and a first coupler protruding from the sleeve outer wall and having a first coupler surface area, a second coupler protruding from the sleeve outer wall and having a second coupler surface area, a third coupler protruding from the sleeve outer wall and having a third coupler surface area, and a fourth coupler protruding from the sleeve outer wall and having a fourth coupler surface area. Each of the first second, third and fourth couplers has an arcuate surface continuously curved throughout its respective surface area.