Golf Club Head Toe Insert With Backstop for Controlled Face Flex
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Solution Overview
Problem
Hollow body irons face challenges in construction efficiency, acoustics, and shot accuracy due to their complex design, while tour irons lack forgiveness and have unpleasant acoustics, necessitating a golf club head with a simple construction, pleasing acoustics, high forgiveness, and improved performance characteristics.
Innovation Solution
A multi-material golf club head design featuring a lightweight polymeric composite toe insert with a backstop to prevent over-flexing of the face panel, combined with a metallic body for high ball speed and accuracy, utilizing a polymeric composite toe insert and metallic body to enhance durability and impact response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If hollow body iron design is used to improve forgiveness, then shot accuracy is improved, but construction complexity increases and acoustics deteriorate
Solution Approach 1:
The club head is divided into two main segments: a hollow body structure and a separate insert component. The insert is placed within the hollow body and can be secured through various methods (adhesive, mechanical interference, or welding), allowing the design to achieve forgiveness through the hollow structure while maintaining simpler construction processes through modular assembly
Solution Approach 2:
The insert is nested within the hollow body of the club head, with the insert fitting into a cavity or recess in the hollow structure. This nesting arrangement allows the hollow body to provide forgiveness while the insert adds functional features, achieving both shot accuracy and construction efficiency
2Manufacturing precision
If hollow body iron design is used to improve forgiveness, then shot accuracy is improved, but acoustic quality deteriorates
Solution Approach 1:
The club head combines the hollow body structure (typically metal) with an insert made of different materials (such as polymer, composite, or different metal alloy). This composite construction allows the hollow body to provide forgiveness while the insert material can be selected to improve acoustic characteristics by dampening unwanted vibrations or enhancing desirable sound frequencies
3Speed
If face panel flexibility is increased to improve ball speed, then ball speed increases, but face panel durability decreases
Solution Approach 1:
The face panel's flexibility parameters are optimized by controlling its thickness, material properties, and geometric design. The face panel is designed with specific flex characteristics that allow sufficient bending for high ball speed while maintaining structural integrity and durability through careful parameter selection
Solution Approach 2:
The face panel utilizes composite material construction or a metal face panel combined with the insert structure, where the material composition is engineered to provide both the necessary flexibility for ball speed generation and the strength required for durability and resistance to cracking or deformation
4Weight of moving object
If lightweight materials are used to reduce mass, then moment of inertia improves, but structural strength decreases
Solution Approach 1:
The club head employs composite materials in the insert and potentially in the hollow body construction, combining lightweight materials (such as polymers or aluminum alloys) with stronger materials (such as steel or titanium). This composite approach reduces overall mass to improve moment of inertia and swing speed while the strategic placement of stronger materials maintains structural strength where required
Solution Approach 2:
Different regions of the club head have different material properties optimized for their specific functions. The hollow body uses lightweight materials for mass reduction, while the insert and critical structural areas use stronger materials to maintain structural integrity, achieving both low mass and high strength through localized material selection
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 achieves high ball speed, improved shot accuracy, and uniform impact response by allowing controlled face flexing without material failure, balancing durability and performance.
Implementation Method 1
allowing controlled face flexing without material failure
Data Source
Figure 1
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AI summary
The golf club head described herein can have a metal body and a non-metal insert. The insert forms an entire toe end of the club head. The insert can have an offset surface, located behind the strike face of the body, wherein the insert and strike face form a gap therebetween. The insert offset surface can comprise a backstop that temporarily restricts bending of a center of the strike face during a golf ball impact. The gap between the strike face and the insert allows the strike face to flex while the backstop prevents the strike face from over flexing. In one embodiment, the golf club head can comprise a body having an interior cavity that opens towards a toe end. The insert can form an outermost surface of the toe end and fill a portion of the cavity.