Tire Bead Layout for Protected Embedded Electronic Components
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Solution Overview
Problem
Conventional tires with embedded electronic components, such as RFID tags, are susceptible to influence from the ply structure, leading to layout precision issues and potential communication disruptions.
Innovation Solution
The tire design includes a pair of annular bead cores, a carcass ply extending between the bead cores, first and second pads, and rim strip rubber, with the electronic component positioned between the second pad and rim strip rubber to minimize influence from the ply, ensuring improved layout precision and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic component is arranged at the boundary surface between the reinforcement filler and the rubber component, then the production control and usage history management functions are achieved, but the electronic component is susceptible to influence from the ply structure
Solution Approach 1:
A buffer layer is introduced as an intermediary between the ply and the electronic component. This buffer layer acts as a mediator that prevents direct contact and harmful interaction between the ply and the electronic component, while still allowing the electronic component to be embedded in the tire structure for communication functions.
Solution Approach 2:
The electronic component is extracted from the boundary surface location where it was directly exposed to ply influence, and repositioned to a location where it is protected by the buffer layer, thereby removing the harmful influence while preserving the functional benefits.
2Device complexity
If the electronic component is positioned closer to the ply structure, then the device complexity is reduced, but the layout precision deteriorates
Solution Approach 1:
The buffer layer serves as a positioning intermediary that defines a specific embedding location for the electronic component. This intermediary structure provides a stable reference plane that improves layout precision without significantly increasing overall device complexity.
Data Source
AI summary
A tire includes: a pair of beads having bead cores and a bead filler extending to an outer side in a tire-radial direction of the bead core; a carcass ply extending from one of the bead core of one bead to the bead core of the other bead, and folded back around each of the bead cores; a first pad disposed at an outer side in a tire-width direction of a folding end of the carcass ply which is folded back; a second pad disposed at an outer side in the tire-width direction of the first pad; and rim strip rubber disposed at least at a part on an outer side in the tire-width direction of the second pad, in which an electronic component is provided to interpose the second pad and the rim strip rubber.