Multi-material Golf Club Head Bonding Design
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Solution Overview
Problem
Multi-material golf club heads face challenges in securely joining different components to withstand impact forces while maintaining an aesthetically pleasing appearance, as lightweight materials often fail to bond well with metallic materials, leading to undesirable visual delineations.
Innovation Solution
A golf club head design featuring a body portion and a crown portion made from different materials, where the crown portion wraps around the skirt to form part of the sole, with a strategically placed parting line that follows existing visual cues, using a lap joint type of bond with varying overlap lengths to ensure both structural integrity and aesthetic appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If lightweight materials are used to replace metallic materials in the crown portion, then weight is reduced and performance is improved, but bonding strength between different materials deteriorates
Solution Approach 1:
The patent employs composite materials by bonding a lightweight crown portion (made from materials like carbon fiber reinforced polymer, titanium, or stainless steel) to a metallic body portion. This composite construction allows the golf club head to achieve reduced weight while maintaining structural integrity through the bonding of dissimilar materials with different properties.
Solution Approach 2:
The patent introduces an intermediary bonding layer or method between the crown portion and body portion to facilitate strong adhesion. This intermediary element (such as specialized adhesives, mechanical interlocking features, or surface treatment layers) enables the lightweight crown material to bond effectively with the metallic body, resolving the bonding strength issue.
2Adaptability or versatility
If multiple materials are used to construct the golf club head, then performance and weight distribution are improved, but aesthetic appearance deteriorates due to visible material delineations
Solution Approach 1:
The patent applies local quality by carefully selecting and positioning materials in specific regions where their properties are most beneficial, while concealing material boundaries in visible areas. The crown portion is strategically designed to wrap around the body portion, with material transitions placed in less visually prominent locations to maintain aesthetic appearance while preserving performance advantages.
Solution Approach 2:
The patent merges the crown portion and body portion into a unified structural assembly where the materials are integrated through bonding. This merging approach, combined with strategic material placement and potentially color-matching or texture-coordinating the different materials, creates a cohesive appearance that minimizes visible delineations between multiple materials.
3Weight of moving object
If the crown portion is made thinner to reduce weight, then weight is reduced and performance is improved, but bonding reliability deteriorates
Solution Approach 1:
The patent compensates for the reduced thickness of the crown portion by extending the bonding interface in other dimensions. Instead of relying solely on thickness, the design incorporates increased surface area through the crown's wrap-around geometry, extended bonding lengths, and strategically positioned attachment points that distribute loads across multiple dimensions, thereby maintaining bonding reliability despite thinness.
Solution Approach 2:
The patent changes bonding parameters such as increasing the bonding surface area, optimizing the bonding material composition, adjusting the bonding method (e.g., mechanical interlocking, chemical bonding, or hybrid approaches), and modifying the geometric parameters of the crown-body interface to compensate for the thin crown thickness and ensure reliable bonding.
Data Source
AI summary
A multi-material golf club head wherein the junction between the two different components made from different materials are seamlessly incorporated within existing visual cues of a golf club head is disclosed. More specifically, the present invention adjusts the design of the bond between the two different components to reflect the needs of the golf club head at the various visual cues around the perimeter of the golf club head.