Golf Club Hosel Insert Coupling for Adjustable Shaft Alignment

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Solution Overview

Problem

Golf clubs with fixed coupling mechanisms between the club shaft and head require a large number of clubs to accommodate varying individual preferences and adjustments, leading to instability and stress concentration, limiting adjustability and flexibility.

Innovation Solution

A golf club head with a shaft sleeve and hosel bore that includes couplers and a shaft sleeve cap, allowing for adjustable coupling to accommodate different club shafts and angles, reducing stress and enhancing adjustability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If fixed coupling mechanisms are used between club shaft and head, then manufacturing simplicity is improved, but adaptability and ease of operation deteriorate

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidadaptability

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The coupling mechanism is divided into separate components: a hosel insert with external threads and a hosel bore with internal threads. This segmentation allows the insert to be independently manufactured and then threaded into the hosel, combining manufacturing simplicity with adaptability for different shafts and angles.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The coupling mechanism transitions from a fixed, permanent attachment to a dynamic, adjustable system. The threaded insert allows the hosel to be removed and reattached at different angles or with different shafts, enabling the club head to adapt to various configurations while maintaining a simple manufacturing process.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If adjustable coupling mechanisms are used, then adaptability is improved, but stability and reliability deteriorate due to stress concentration

Engineering Contradiction:

ImproveadjustabilityVSAvoidstability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The threaded insert concentrates the adjustment functionality in a localized region rather than requiring a complex adjustable mechanism throughout the entire hosel. This localized threading provides adjustability where needed while maintaining structural integrity and stability in the rest of the club head assembly.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The threaded insert acts as an intermediary component between the hosel and the club shaft. This mediator allows for adjustable coupling while distributing stresses through the threaded connection, preventing stress concentration that would occur with direct adjustable mechanisms.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If multiple fixed clubs are manufactured to accommodate preferences, then adaptability is improved, but device complexity and quantity of substance increase

Engineering Contradiction:

ImprovecustomizabilityVSAvoidnumber of clubs

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The threaded hosel insert creates a universal coupling system that can accommodate multiple club shafts and angle configurations with a single club head. This multi-functional design eliminates the need to manufacture multiple separate club heads for different preferences, reducing overall device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12544631B2Golf clubs with hosel inserts and related methods

Publication Date: 2026.02.10 KARSTEN MFG CORP

AI summary

Embodiments of golf coupling mechanisms are presented herein. Other examples and related methods are also disclosed herein.