Dual-Hardness Paddle Core Structure for Lightweight Impact Damping
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Solution Overview
Problem
Existing pickleball paddles and beach rackets face issues with increased weight due to complex cushioning structures, reduced durability, and short service life due to inadequate focus on core material strength, compromising striking resilience and resistance.
Innovation Solution
A paddle core structure made of a cushioning material comprising a covering board layer and a structural layer with male and female cushioning layers having concave-convex structures, using carbon or glass fiber for support and foam or EVA materials for cushioning, combined with different hardness for varied striking characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cushioning springs are added to the paddle surface, then the cushioning effect is improved, but the weight of the paddle increases significantly
Solution Approach 1:
The patent combines the cushioning function with the core layer structure by integrating elastic resin material directly into the core layer, eliminating the need for separate cushioning springs. The core layer itself provides the cushioning effect through its elastic properties, merging the support function and cushioning function into a single integrated structure.
Solution Approach 2:
The patent replaces the mechanical spring system with an elastic resin material system. Instead of using discrete mechanical springs that add weight, the cushioning effect is achieved through the viscoelastic properties of the resin material in the core layer, which dissipates impact energy through material deformation rather than mechanical spring compression.
2Reliability
If cushioning springs are added to improve cushioning effect, then the cushioning performance is enhanced, but the structural complexity increases
Solution Approach 1:
The patent merges the cushioning function with the core layer structure by integrating elastic resin material directly into the core layer, eliminating the need for separate cushioning springs. The core layer itself provides the cushioning effect through its elastic properties, merging the support function and cushioning function into a single integrated structure.
3Reliability
If only cushioning effect is prioritized without adequate core material strength, then the cushioning performance is improved, but the durability and service life of the paddle decrease
Solution Approach 1:
The patent uses composite materials in the core layer, combining organic fiber materials (such as carbon fiber, glass fiber, or aramid fiber) with elastic resin material. The fiber reinforcement provides tensile strength and structural integrity, while the elastic resin provides cushioning properties. This composite structure ensures both durability and effective shock absorption.
Solution Approach 2:
The patent applies different material properties to different regions of the core layer. The core layer contains fiber reinforcement concentrated in areas requiring structural strength, while maintaining elastic resin properties in areas requiring cushioning. This local differentiation of material quality allows the paddle to simultaneously achieve high strength and effective cushioning.
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 achieves a lightweight, durable paddle with enhanced striking resilience, noise reduction, and extended service life, offering different striking characteristics on both sides.
Implementation Method 1
the structural layer, the first covering board layer and the second covering board layer are hot-pressed into one through resin bonding layers applied thereto
Implementation Method 2
resin bonding layers applied thereto
Implementation Method 3
the structural layer comprises male and female cushioning layers that are mated with each other... made of a foam material or an EVA material
Implementation Method 4
achieve good striking noise reduction effect, good resilience
Data Source
AI summary
Disclosed is a paddle core structure made of a cushioning material. The core structure comprises a covering board layer and a structural layer, wherein the structural layer comprises male and female cushioning layers that are mated with each other, opposite sides of the male and female cushioning layers have mutually mated concave-convex structures, and the structural layer is formed after the concave-convex structures are aligned and mated; the male cushioning layer and the female cushioning layer are made of a mixture of a foam material with an EVA material or a mixture of a foam material and a polyurethane rubber material. The paddle core material made of a cushioning material according to the present invention can meet the requirement of light weight and combines the characteristics of various materials to achieve good striking noise reduction effect, good resilience, good core material durability and ensure the long service life of a paddle. Moreover, due to the combination of the male and female cushioning layers with different hardness, the two sides of the paddle have different hardness effects, bringing the advantages of different striking characteristics on the two sides.