Golf Club Grip Axial Seam Strength via Dual Adhesive Segmentation
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Solution Overview
Problem
Existing single anti-slip sheet golf club grips face issues with weak axial seam binding strength, messy and time-consuming fabrication processes, and reduced production efficiency, especially when the grip is mounted on larger golf club shafts.
Innovation Solution
A combination of structural adhesives like Cyanoacrylate and Pressure Sensitive Adhesives (PSA) is used to enhance binding strength and simplify the assembly process, with a resilient inner sleeve and single anti-slip sheet design that includes a tubular sleeve body, axial seam strip, and predetermined dimensions for improved manufacturing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single anti-slip sheet is used to wrap around the golf club shaft, then the grip can be simplified in structure, but the axial seam binding strength becomes weak especially when mounted on larger shafts
Solution Approach 1:
The invention divides the grip into two separate sheets (first anti-slip sheet and second anti-slip sheet) that wrap around the shaft in opposite directions. This segmentation allows each sheet to be secured independently with adhesive, creating two separate bonding zones that collectively provide stronger axial seam binding strength while maintaining the overall simplicity of the single-layer grip structure.
Solution Approach 2:
The invention applies different properties to different parts of the grip system. The first and second anti-slip sheets have opposite wrap directions and are bonded at different axial positions, creating localized bonding zones that collectively strengthen the axial seam structure without compromising the overall flexibility and simplicity of the grip.
2Strength
If high adhesive cement such as polychloroprene adhesive is used to adhere the single sheet, then the binding strength is improved, but the fabrication process becomes messy and time-consuming
Solution Approach 1:
The adhesive application is segmented into two separate, smaller bonding zones rather than one large bonding zone. This reduces the amount of adhesive needed per application, minimizes mess, and allows for faster, more controlled application while maintaining strong overall binding strength through the combined effect of both bonding zones.
3Stability of the object's composition
If the single sheet is made less stretchable to maintain structural integrity, then the axial gap opens widely when mounted on larger shafts, but this weakens the axial seam strip
Solution Approach 1:
The grip is segmented into two sheets with opposite wrap directions, creating two separate bonding zones. This segmentation allows each sheet to maintain its structural integrity with reduced stretchability while the distributed bonding zones prevent excessive gap opening, as the stress is divided between two independent bonding areas rather than concentrated in one location.
Solution Approach 2:
The first and second anti-slip sheets wrap in opposite directions (asymmetric configuration), which distributes the mechanical stress differently across the axial seam structure. This asymmetric arrangement helps maintain bonding strength even when individual sheets have reduced stretchability, as the opposing wrap directions create a more balanced stress distribution.
4Adaptability or versatility
If the single sheet is stretched more to fit larger shafts, then installation is easier and maximum grip size is increased, but the axial gap at the axial seam opens widely
Solution Approach 1:
The grip structure is segmented into two sheets that create two separate bonding zones. This segmentation allows the grip to accommodate larger shaft sizes through controlled stretching while maintaining axial seam strength, as the stretching force and resulting gap formation are distributed across two independent bonding areas rather than concentrated in one location.
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 solution provides a stronger axial seam structure, reduces fabrication mess and time, and enhances production rates while offering a soft, cushioned grip feel through the use of a leather/foam sheet configuration.
Implementation Method 1
an adhesive that hardens via a process of evaporation of solvent (for example, PU glue) or of chemical reaction
Implementation Method 2
an adhesive that hardens via a process of evaporation of solvent (for example, PU glue) or of chemical reaction (such as super glue or Cyanoacrylate)
Implementation Method 3
The PSA, as used herein, means an adhesive forming a bond simply by the application of light pressure to combine the adhesive with the adhered
Data Source
AI summary
A golf club grip comprises a resilient inner sleeve, a single sheet, an axial seam strip, and a combination of adhesives. The single sheet is wrapped around and adhered on to the resilient inner sleeve's body and has its top and bottom circumferential margins respectively over the resilient inner sleeve's cap underside edge and retaining sidewall edge, and two axial margins forming an axial gap along the length of the resilient inner sleeve's body. The combination of adhesives includes a pressure sensitive adhesive and a structural adhesive. The pressure sensitive adhesive is used to adhere the single sheet onto the resilient inner sleeve's body. The structural adhesive is applied in the axial gap covered with the axial seam strip to form an axial seam structure. The single sheet can be a leather/foam single sheet to provide the golf club grip with a soft and cushion feel for the user.