Pneumatic Tire Transponder Sidewall Integration
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Solution Overview
Problem
Existing pneumatic tire transponder positions do not effectively minimize stresses and deformations during tire construction and use, and they also cause radio frequency communication disturbances and interference.
Innovation Solution
A transponder is integrated into the pneumatic tire's sidewall, housed within a sleeve made of green rubber, positioned circumferentially and radially outside the bead, and axially bordering the body ply, minimizing stress and interference while maintaining effective radio frequency communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transponder is integrated into the bead structure between sidewall and bead filler, then the transponder is securely positioned within the tire structure, but the transponder is subjected to high stresses and deformations during tire construction and use
Solution Approach 1:
The transponder is extracted from the high-stress bead region and relocated to the sidewall area, which experiences lower stresses and deformations during tire construction and use, while maintaining secure positioning through integration with sidewall layers
Solution Approach 2:
The transponder is positioned in a specific location (sidewall) that has different mechanical properties compared to the bead region, utilizing the local quality of the sidewall area which experiences lower stress concentrations and deformations
2Reliability
If the transponder is integrated into the bead structure, then the transponder is securely positioned within the tire structure, but radio frequency communication disturbances and interference occur
Solution Approach 1:
The transponder is extracted from the bead region, which contains metallic components and complex structures that cause RF interference, and relocated to the sidewall area where radio frequency communication experiences fewer disturbances and interference
Solution Approach 2:
The sidewall region is selected as the transponder location because it has different electromagnetic properties compared to the bead region, providing a location with lower radio frequency interference and better communication quality
3Ease of manufacture
If the transponder is glued onto the external surface of the sidewall, then the design is simple and applicable to existing tires, but the transponder detaches following cyclical deformations
Solution Approach 1:
The transponder is merged with the sidewall structure by integrating it within the sidewall layers during tire construction, creating a unified structure that moves together during cyclical deformations, eliminating detachment issues while maintaining design simplicity
Solution Approach 2:
The transponder is integrated into the sidewall structure during the tire manufacturing process before the tire enters service, ensuring proper positioning and secure attachment within the sidewall layers that will withstand cyclical deformations
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 reduces stress and deformation on the transponder, minimizes radio frequency interference, and allows for reliable communication up to 3 meters without impacting tire performance or durability.
Implementation Method 1
a transponder (that is, an electronic device suitable for communicating in radio frequency) which permits remote communication
Data Source
AI summary
A pneumatic tire (1) having: a toroidal carcass (2), which is comprised of a body ply (3) partially collapsed onto itself and therefore having two lateral flaps; two annular beads (4), each of which is surrounded by the body ply (3) and has a bead core (5) and a bead filler (6); an annular tread (7); a pair of sidewalls (11) arranged externally to the body ply (3) between the tread (7) and the beads (4); a pair of abrasion gum strips (12) arranged externally to the body ply (3) under the sidewalls (13) and at the beads (4); and a transponder (13) which is arranged in contact with the body ply (3) at a flap of the body ply (3) and is located below an edge (19) of the body ply (3) between the edge (19) of the body ply (3) and the bead (4).