Tire Bead Electronic Component Protection via Triangular Nesting
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Solution Overview
Problem
Conventional tire designs fail to effectively protect embedded electronic components, such as RFID tags, during tire deformation due to inadequate placement and lack of sufficient protection mechanisms.
Innovation Solution
The tire design incorporates a bead core, bead filler, upper ply, reinforcement ply, and down ply structure that embeds the electronic component in a triangular region, with a protective member covering the RFID tag, ensuring it is sandwiched between the reinforcement ply and other tire components to prevent movement and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the RFID tag is arranged between the stiffener and side rubber without a fiber layer, then the RFID tag is easier to access, but the RFID tag moves greatly during tire deformation and protection becomes difficult
Solution Approach 1:
The RFID tag is nested within multiple protective layers including the fiber layer, stiffener, and side rubber, creating a nested structure where each layer provides additional protection while maintaining the tag's accessibility for reading operations
Solution Approach 2:
The patent applies different material properties and protective qualities to different regions around the RFID tag, with the fiber layer providing flexibility, the stiffener providing structural support, and the side rubber providing environmental protection, creating localized quality enhancements around the tag
2Device complexity
If the RF tag is simply sandwiched between the carcass ply and cord reinforcement layer, then the structure is simple, but protection of the RF tag is not sufficient
Solution Approach 1:
The patent uses a composite structure combining multiple materials (fiber layer, stiffener material, side rubber, carcass ply, cord reinforcement layer) with different protective properties to create a multi-layered protection system that exceeds the capabilities of any single material
3Reliability
If the electronic component is embedded in a region surrounded by the turnup part, down ply and reinforcement ply, then movement of the electronic component is suppressed, but the device complexity increases
Solution Approach 1:
The patent defines a specific three-dimensional triangular region in the cross-sectional view of the tire, using spatial positioning in multiple dimensions (radial, circumferential, and thickness directions) to precisely locate and protect the RFID tag within the bounded region surrounded by the turnup part, down ply, and reinforcement ply
Data Source
AI summary
A tire including a bead core; bead filler; upper ply; reinforcement ply which is provided to overlap a tire-radial direction inside portion of the upper ply; and down ply which overlaps a turnup part of the upper ply and reinforcement ply, and extends from an outer side in the tire-radial direction to an inner side in the tire-radial direction so as to encompass the bead core and bead filler together with the upper ply, in which an electronic component is embedded in a region of substantially triangular shape in a cross section surrounded by the turnup part of the upper ply, down ply and an end part of the reinforcement ply.