Golf Club Head Heat Blocking Part for Joint Strength
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Solution Overview
Problem
Golf club heads face challenges in maintaining joint strength between the main body member and face member, as well as between the main body member and sole member, due to heat transfer during welding, which can degrade the joint strength and durability.
Innovation Solution
A golf club head design with a hollow structure featuring a face member fixed by brazing or soldering and a sole member fixed by brazing, soldering, or welding, where a heat blocking part with a larger thickness than the sole opening's front edge part is incorporated to reduce heat transfer, and the sole member's front edge part has a thickness between 0.5 mm and 2.5 mm, and the sole reinforcing part has a thickness of 2.5 to 10 mm, enhancing joint strength and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the thickness of the sole member is increased to improve durability and joint strength, then the joint strength between the main body member and sole member is improved, but the welding time increases and heat transfers to the filler metal, degrading the joint strength between the face member and main body member
Solution Approach 1:
The patent applies local quality by creating a heat blocking part with larger thickness at the sole opening's front edge part, while keeping other areas of the sole member with standard thickness. This localized thickening specifically targets the heat transfer path without unnecessarily increasing the overall sole member thickness or welding time elsewhere in the structure.
Solution Approach 2:
The heat blocking part acts as a thermal intermediary or barrier between the welding heat source and the filler metal. By introducing this intermediate structure with higher thermal mass, the patent mediates the heat transfer process, absorbing and dissipating heat before it reaches the filler metal, thus protecting the joint strength while allowing adequate welding time for the sole member attachment.
2Loss of time
If the thickness of the sole member is decreased to shorten welding time and reduce heat transfer, then the welding process is improved, but the durability and joint strength of the sole member decrease
Solution Approach 1:
The patent maintains standard thickness in the majority of the sole member to keep welding time short and heat transfer minimal, while applying local thickening only at the heat blocking part where thermal protection is needed. This selective approach preserves the benefits of thin-walled construction (fast welding) while providing targeted protection where required.
3Strength
If a heat blocking part with larger thickness is added to reduce heat transfer, then the joint strength between face member and main body member is protected, but the structural complexity and material usage increase
Solution Approach 1:
The heat blocking part is designed as a localized feature integrated into the existing main body member structure, rather than a separate complex component. The thickening is confined to the specific region at the sole opening's front edge part, maintaining overall structural simplicity while providing the necessary thermal protection function.
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
The design increases joint strength between the face and main body members and sole members, while reducing heat transfer during welding, thereby improving the overall durability and performance of the golf club head.
Implementation Method 1
a heat blocking part forming a part between the sole opening's front edge part and the face portion and having a thickness larger than a thickness of the sole opening's front edge part
Implementation Method 2
a face member fixed to the main body member by brazing or soldering so as to close the face opening
Implementation Method 3
a face member fixed to the main body member by brazing or soldering so as to close the face opening
Implementation Method 4
a sole member fixed to the main body member by brazing, soldering or welding so as to close the sole opening
Data Source
AI summary
A hollow golf club head comprises a main body member provided with a face opening and a sole opening, a face member brazed/soldered to the main body member to close the face opening, and a sole member brazes/soldered/welded to the main body member to close the sole opening. The main body member has a thin front edge part of the sole opening and a thick heat blocking part between the thin front edge part and the face portion. The sole member has a front edge part connected to the sole opening's front edge part and a thicker sole reinforcing part positioned backward thereof. The thicknesses of the sole member's front edge part and the sole opening's front edge part are not less than 0.5 mm and less than 2.5 mm. The thicknesses of the sole reinforcing part and the heat blocking part are 2.5 to 10.0 mm.