Tire RFID Tag Placement Around Joint Parts for Uniformity
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Solution Overview
Problem
Existing tire technologies do not adequately consider the positional relationship between electronic components and joint parts of tire constituent members, leading to potential irregularities in rubber structure embedding and compromised uniformity.
Innovation Solution
The tire design incorporates an RFID tag positioned within a predetermined range relative to the joint parts of tire constituent members, specifically between the inner liner and other annular members, to optimize the positional relationship and ensure uniformity, using a protective rubber sheet and bead filler configuration to secure the RFID tag and maintain flexibility and rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an electronic component is embedded in the tire without considering the positional relationship with joint parts, then the embedding process is simplified, but the uniformity of the rubber structure deteriorates
Solution Approach 1:
The patent applies preliminary action by determining the optimal position for the electronic component before the actual embedding process. The position is calculated based on the joint parts' locations of tire constituent members, and the electronic component is placed at this predetermined position to avoid stress concentrations and maintain rubber structure uniformity.
2Ease of manufacture
If the electronic component is positioned near joint parts of tire constituent members, then the embedding process is easier, but the stress concentration on the electronic component increases
Solution Approach 1:
The patent applies preliminary anti-action by calculating the stress distribution in the tire and identifying regions with high stress concentration near joint parts. The electronic component is deliberately positioned away from these high-stress regions, counteracting the potential harmful effects of stress concentration before the tire is actually used.
3Productivity
If the position of the electronic component is randomly determined, then the manufacturing process is faster, but the communication efficiency deteriorates
Solution Approach 1:
The patent applies preliminary action by performing a position determination calculation that considers the electromagnetic environment and potential interference sources in the tire. This calculation is done before manufacturing, allowing the electronic component to be positioned at an optimal location that ensures good communication efficiency while maintaining manufacturing speed.
Data Source
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AI summary
Provided is a tire which takes into account positional relationships between joint parts of a plurality of tire constituent members and an electronic component. A tire 1 comprises: a plurality of annular tire constituent members respectively having joint parts formed by joining one end and another end of each member; and an RFID tag 40 serving as an electronic component. The plurality of annular tire constituent members respectively having joint parts include an inner liner 29 that covers a tire inner cavity surface, and at least two tire constituent members different from the inner liner 29. The RFID tag 40 is disposed within a range of less than 90° around a tire rotation axis, relative to the positions of the joint parts of the inner liner 29.