Pneumatic Tire Electronic Component Protection
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Solution Overview
Problem
Existing methods for integrating electronic components into tires, such as RFID, face issues with damage or deformation due to impact loads during travel and insufficient reading performance, especially during high-speed and severe handling conditions.
Innovation Solution
A pneumatic tire design where the rubber member inward from the electronic component's position is hardened to maintain rigidity, with specific complex elastic modulus values at different temperatures, ensuring the electronic component's integrity and reading performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic component is integrated with the tire by vulcanization adhesion after molding the green tire, then the electronic component does not fall-off, but the electronic component is damaged or deformed by impact load during traveling
Solution Approach 1:
The patent applies local quality by creating a rubber member with specifically controlled elastic modulus properties in the region inward from the electronic component's position. This localized rubber member has a complex elastic modulus at 50°C of 1.0 to 5.0 MPa and at 150°C of 0.3 to 2.0 MPa, providing targeted protection exactly where the electronic component needs it most, while other parts of the tire maintain their normal properties.
Solution Approach 2:
The patent utilizes parameter changes by precisely controlling the complex elastic modulus of the rubber member at different temperatures. The rubber member is designed to have specific modulus values at 50°C and 150°C, creating a temperature-dependent mechanical property profile that provides optimal protection against impact loads while maintaining flexibility during normal operation.
2Object-affected harmful factors
If the rubber member is hardened to suppress deformation, then the electronic component is protected from damage, but the tire loses flexibility and increases rigidity
Solution Approach 1:
The patent applies local quality by creating a rubber member with specifically controlled elastic modulus properties in the region inward from the electronic component's position. This localized rubber member has a complex elastic modulus at 50°C of 1.0 to 5.0 MPa and at 150°C of 0.3 to 2.0 MPa, providing targeted protection exactly where the electronic component needs it most, while other parts of the tire maintain their normal properties.
Solution Approach 2:
The patent utilizes parameter changes by precisely controlling the complex elastic modulus of the rubber member at different temperatures. The rubber member is designed to have specific modulus values at 50°C and 150°C, creating a temperature-dependent mechanical property profile that provides optimal protection against impact loads while maintaining flexibility during normal operation.
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 tire design effectively suppresses damage and deformation of electronic components, maintaining sufficient reading performance even under high-speed and severe handling conditions by controlling the rubber's elastic modulus, ensuring reliable data communication.
Implementation Method 1
the complex elastic modulus E*(50°C) at 50°C and the complex elastic modulus E*(150°C) at 150°C of the rubber member for tire
Data Source
Figure 1
Figure 2
AI summary
Provided is a tire structure technology with which, even in the case of a tire having an electronic component provided therein, damage and deformation of the electronic component caused by impact loads, etc., during road surface travel can be suppressed and sufficient reading performance can be maintained. A pneumatic tire in which an electronic component is provided at a position farther outward in a tire axial direction than a carcass, wherein, in a tire rubber member that has the greatest E*(50°C) at 50°C among tire rubber members positioned inward in the tire axial direction from the position where the electronic component is provided, E*(50°C) at 50° and E*(150°C) at 150°C satisfy the following formula. E*(150°C)/E*(50°C) ≥ 0.9