Tire Bead Region Electronic Device Embedding
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Solution Overview
Problem
Incorporating electronic devices like RFID tags into tires during construction can compromise the structural integrity and radio frequency compatibility, particularly due to cyclical flexural bending and unsuitable locations for data transmission.
Innovation Solution
The electronic device is strategically embedded in the tire's bead region, radially below the apex of the bead filler and axially outside the bead filler, with structural reinforcements and abrasion portions to maintain structural integrity and ensure radio frequency compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If an electronic device is embedded into a tire during tire construction, then the tire can transmit data to external readers, but the structural integrity of the tire is compromised
Solution Approach 1:
The electronic device is positioned in advance within the bead filler material during tire construction, before vulcanization occurs. This preliminary placement ensures the device is integrated into the tire structure from the beginning, allowing the bead filler to provide structural support while maintaining data transmission capability.
Solution Approach 2:
The bead filler acts as an intermediary material that surrounds and supports the electronic device. This intermediary substance provides the necessary structural integrity to the tire while allowing the electronic device to function, effectively mediating between the conflicting requirements of strength and data transmission.
2Loss of information
If an electronic device is placed in a location suitable for data transmission, then radio frequency compatibility is improved, but the location may not be suitable due to cyclical flexural bending
Solution Approach 1:
The bead filler is applied locally around the electronic device in the bead region, creating a protective zone with different properties than the rest of the tire. This local application provides both mechanical protection from flexural bending and maintains radio frequency compatibility in this specific location.
Solution Approach 2:
The electronic device is positioned in advance within the bead filler material during tire construction, before vulcanization occurs. This preliminary placement ensures the device is integrated into the tire structure from the beginning, allowing the bead filler to provide structural support while maintaining data transmission capability.
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 placement enhances the tire's structural reinforcement while allowing for effective data transmission without compromising the tire's integrity, addressing the challenges of foreign object interference and radio frequency compatibility.
Implementation Method 1
electronic devices have utility in transmitting data, such as tire-specific identification data, to an external reader. Ultra-high frequency ("UHF") tags are typically small and utilize flexible antennas for the transmission of data.
Data Source
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AI summary
A tire includes a pair of bead portions having a bead and a bead filler. A pair of reinforcement fillers has an inner surface with an upper portion contacting an outer surface of a respective bead filler, a middle portion contacting an outer surface of a respective turn up portion of a body ply, and a lower portion contacting an outer surface of a wire reinforcement. An electronic device is disposed radially below an apex of the bead filler of one of the bead portions and axially outside the bead filler. The electronic device is axially spaced from the bead filler such that the electronic device does not contact the bead filler.