Resin Tire Frame with Metal-Resin Complex for Vibration Damping
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Solution Overview
Problem
Tires made with resin materials offer weight reduction and ease of molding but tend to have high hardness and transmit vibrations, leading to reduced riding comfort due to increased rigidity.
Innovation Solution
A tire design featuring a circular resin tire frame with a metal-resin complex wound around its outer circumference, comprising a metal member, an adhesive layer with a lower tensile elastic modulus than the resin layer, and a resin layer made of thermoplastic resins, thermoplastic elastomers, and thermosetting resins, but not vulcanized rubbers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a resin-coated metal member is wound around a resin-made tire frame to improve durability, then stress resistance and rigidity are improved, but riding comfort deteriorates due to high rigidity and vibration transmission
Solution Approach 1:
The patent applies composite materials by creating a multi-layered metal-resin complex structure consisting of a metal member, adhesive layer, and resin layer. This composite structure combines the strength and rigidity of metal with the vibration-absorbing properties of resin, achieving both durability and improved riding comfort through material composition rather than单一 material usage.
Solution Approach 2:
The patent implements local quality by differentiating the properties of each layer within the metal-resin complex. The metal member provides structural strength, the adhesive layer ensures bonding, and the resin layer specifically addresses vibration damping. Each component has optimized local properties tailored to its specific function, allowing the overall structure to simultaneously achieve rigidity and vibration reduction.
2Object-affected harmful factors
If the adhesive layer has lower tensile elastic modulus than the resin layer, then riding comfort is improved through better vibration absorption, but adhesion durability may be compromised
Solution Approach 1:
The patent applies parameter changes by specifically controlling the tensile elastic modulus of the adhesive layer to be lower than that of the resin layer. This parameter optimization allows the adhesive layer to function as an additional vibration-damping component while maintaining adequate adhesion. The modulus ratio between layers is carefully adjusted to achieve the desired balance between comfort and durability.
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
This configuration improves riding comfort by reducing the transmission of vibrations during travel while maintaining durability and performance.
Implementation Method 1
an adhesive layer with a lower tensile elastic modulus than the resin layer
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
A tire including: a circular tire frame containing a resin material; and a metal-resin complex wound around an outer circumferential portion of the tire frame, which includes a metal member, an adhesive layer and a resin layer in this order, and in which a tensile elastic modulus of the adhesive layer is less than a tensile elastic modulus of the resin layer.