Vehicle Tyre Transponder Bead Integration
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Solution Overview
Problem
Existing methods for integrating transponders into vehicle tires are prone to damage from material stress, leading to reliability issues and suboptimal signal quality during operation.
Innovation Solution
The transponder is positioned in the tire bead's low-stress area, protected by the tire core's rigidity and a rubber layer, with a foil-shaped RFID design and spiral antennas embedded between tire components, ensuring durability and high signal quality through optimal alignment and adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transponder is integrated into the tire using conventional methods, then the transponder can be installed in the tire, but it is prone to damage from material stress during operation
Solution Approach 1:
The transponder is nested within multiple protective layers: first embedded in the bead liner (inner layer), then surrounded by the bead rubber compound (outer layer). This nested structure places the transponder in a protected position within the tire bead, shielding it from material stresses while maintaining functionality.
Solution Approach 2:
The transponder is positioned in a specific location within the tire bead where material stresses are lowest. The bead area with core wires provides high rigidity and minimal deformation, creating a localized safe zone for the transponder that experiences very low material stresses during tire operation.
2Reliability
If the transponder is positioned deeper in the tire bead for protection, then durability improves, but radio signal quality may deteriorate
Solution Approach 1:
The transponder is positioned at the optimal location within the bead liner where it achieves the best balance between protection and signal quality. Specifically, it is placed in the upper area of the outer side of the bead liner, which provides sufficient protection while maintaining high signal quality for radio communication.
Solution Approach 2:
The transponder dimensions are optimized with a width between 3-15mm and length between 30-80mm, and the antenna spiral dimensions are specifically designed to ensure optimal transmission and reception performance while maintaining the protective positioning within the bead.
3Strength
If a thick carrier film is used for the foil-shaped transponder, then structural integrity improves, but flexibility and integration ease decrease
Solution Approach 1:
The transponder uses a foil-shaped design with a carrier film thickness of less than 1mm, making it highly flexible and suitable for integration between tire components. The thin film structure maintains sufficient structural integrity while allowing easy conforming to the curved surfaces and tight spaces within the tire bead assembly.
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 permanently shields the transponder from material stress, maintains high signal quality, and facilitates easy integration, enhancing durability and accuracy in tire identification and pressure monitoring systems.
Implementation Method 1
the transponder with its two antenna parts is aligned circumferentially with the tire core. This ensures optimal alignment of the transponder within the tire bead to guarantee optimal transmission and reception performance.
Data Source
Figure 1
Figure 2~3
AI summary
The present invention provides a vehicle tyre having a transponder, wherein, in order to be able to easily integrate the transponder in the vehicle tyre, it is proposed that the transponder (1) is arranged in the tyre bead between the carcass ply (6) and tyre inner liner (20), wherein the height dimension (18) in the radial direction of the vehicle tyre between the transponder (1) and the underside of the bead filler (5) is at least 3 mm.