Paddle Tennis Racket Core Rib Sheet Rigidity
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Solution Overview
Problem
Traditional paddle tennis rackets have lower rigidity due to their uniform core material, resulting in reduced ball bounce force and weakened performance during gameplay.
Innovation Solution
A paddle tennis racket design featuring a core rib sheet structure composed of carbon fiber reinforced composite materials, including a racket frame, first and second surface layers, and an internal structure with upper and lower core material layers, forming an 'I' shape for enhanced rigidity, achieved through a manufacturing process involving windable sheet materials, expandable materials, and heat curing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a uniform core material is used in the traditional paddle tennis racket, then the manufacturing process is simple, but the rigidity of the racket is relatively lower
Solution Approach 1:
The core is segmented into upper and lower core material layers with a core rib sheet positioned between them. This segmentation allows the core to have different structural zones that work together to enhance rigidity while maintaining manufacturability through standardized layering processes.
Solution Approach 2:
The core combines multiple materials including upper core material, lower core material, and a core rib sheet made of carbon fiber reinforced composite material. This composite structure leverages the high strength-to-weight ratio of carbon fiber to significantly improve racket rigidity compared to uniform core materials.
2Force
If a uniform core material is used in the traditional paddle tennis racket, then the structure is simple, but the ball bounce force is relatively smaller
Solution Approach 1:
The core combines multiple materials including upper core material, lower core material, and a core rib sheet made of carbon fiber reinforced composite material. This composite structure leverages the high strength-to-weight ratio of carbon fiber to significantly improve racket rigidity compared to uniform core materials.
Solution Approach 2:
The core rib sheet is strategically positioned between the upper and lower core material layers to provide localized reinforcement. This local quality enhancement allows the core to deliver higher ball bounce force in critical areas while maintaining overall structural efficiency.
3Strength
If carbon fiber reinforced composite material is used for the core rib sheet and surface layers, then the rigidity is improved, but the manufacturing process becomes more complex
Solution Approach 1:
The core rib sheet and surface layers are pre-formed from carbon fiber reinforced composite materials before assembly into the final racket structure. This preliminary action allows for optimized material placement and structural configuration that would be difficult to achieve through post-assembly modifications.
Solution Approach 2:
The core is segmented into upper and lower core material layers with a core rib sheet positioned between them. This segmentation allows the core to have different structural zones that work together to enhance rigidity while maintaining manufacturability through standardized layering processes.
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 improved rigidity enhances the ball bounce force, providing stronger power for attacking and counterattacking capabilities during gameplay.
Implementation Method 1
pressurizing and heating the aforementioned preformed member and expanding the aforementioned expandable material to make the column heat cured and then formed into the handle portion
Implementation Method 2
make the frame heat cured and then formed into the racket frame of the paddle tennis racket, make the upper composite sheet material heat cured and integrally connected with the racket frame
Implementation Method 3
pressurizing and heating the aforementioned preformed member
Data Source
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AI summary
The present invention illustrates a paddle tennis racket (1) having a core rib sheet (132), which includes a ball hitting portion (10) and a handle portion (20). The ball hitting portion (10) includes a racket frame (11), a first surface layer (12), a second surface layer (14), and an internal structure (13). The racket frame (11) has an inner wall (111) and an accommodating space. The internal structure (13) is disposed in the accommodating space and includes an upper core material layer (131), a lower core material layer, (133) and a core rib sheet (132) piled between the upper core material layer (131) and the lower core material layer (133). The first surface layer (12) is laid on the top surface of the upper core material layer (131). The second surface layer (14) is laid on the bottom surface of the lower core material layer (133). The aforementioned racket frame (11), first surface layer (12), second surface layer (14) and core rib sheet (132) are all made of carbon fiber reinforced composite material, and the first surface layer (12), the second surface layer (14) and the core rib sheet (132) are all integrally connected with the racket frame (11). By the structural configuration of the aforementioned paddle tennis racket (1), the overall rigidity of the paddle tennis racket (1) is raised.