Embedded RFID Tire Bead Filler Layout for Uniformity Control
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Solution Overview
Problem
The embedding of RFID tags in tires can lead to unevenness and a deterioration in uniformity due to the level difference caused by the electronic component, posing challenges in maintaining tire integrity and performance.
Innovation Solution
A manufacturing method for tires that involves embedding RFID tags within a recess in the bead filler, covered by a coating rubber, and further secured by a rubber sheet, which helps in distributing the strain energy evenly and preventing movement or deformation of the RFID tag during tire molding and use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an RFID tag is embedded inside the tire, then production control and usage history management become possible, but a level difference arises causing deterioration in uniformity
Solution Approach 1:
A recess is formed in the bead filler before the RFID tag is embedded. This preliminary preparation allows the tag to be seated in a pre-defined space, preventing it from creating a protruding level difference on the tire surface and thereby maintaining manufacturing precision and uniformity while still enabling the reliability benefits of RFID embedding
Solution Approach 2:
The RFID tag is nested within the recess of the bead filler structure. This nesting approach integrates the electronic component into the existing tire structure without adding external protrusions, allowing the tag to be housed within the predetermined space to maintain surface uniformity while preserving functionality
2Reliability
If an RFID tag is embedded inside the tire, then communication functionality is achieved, but the RFID tag may move or deform during molding and use
Solution Approach 1:
A recess is formed in the bead filler before the RFID tag is embedded. This pre-formed cavity provides a dedicated seating area that constrains the tag's position, preventing movement and deformation during the molding process and subsequent tire use, thereby ensuring position stability while maintaining communication functionality
Solution Approach 2:
The recess acts as an intermediary structure between the bead filler and the RFID tag. This intermediate feature provides a stable interface that secures the tag in place, preventing direct contact between the tag and the surrounding rubber material that could cause deformation, while still allowing the tag to function properly
Data Source
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AI summary
Provided is a method of manufacturing a tire which, even when an electronic component is embedded in the tire, makes it possible to eliminate a worsening in uniformity and avoid producing large bumps. The method is a method of manufacturing a tire 1, the tire 1 including bead cores 21, a bead filler 22 extending outward in a tire radial direction of each of the bead cores 21, a carcass ply 23 extending from one bead core 21 to another bead core 21 and folded back around the bead cores 21, and an RFID tag 40 serving as an electronic component, the method comprising: a covering step of covering the RFID tag 40 with coated rubber 43; a recess forming step of forming, in the bead filler 22, a recess 22D having a shape corresponding to a shape of the coated rubber 43; and a disposing step of disposing the coated rubber 43, which at least partially covers the electronic component 40, in the recess 22D in the bead filler 22.