Tire RFID Tag Protection via Flipper and Carcass Ply Nesting

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Solution Overview

Problem

Conventional tires embedding electronic components like RFID tags lack protection, making them vulnerable to damage during tire distortion or shock, as the RF tag is not adequately safeguarded between the stiffener and side rubber.

Innovation Solution

A tire design featuring a pair of beads with a bead core and bead filler, a flipper that envelops the bead, a carcass ply bridging between the beads, and an RFID tag embedded to contact the flipper, providing protection through the reinforced fiber layer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the RF tag is arranged between the stiffener and side rubber without a fiber layer, then the structure is simpler and easier to manufacture, but the RF tag becomes vulnerable to damage during tire distortion or shock

Engineering Contradiction:

Improveease of manufactureVSAvoidprotection of electronic component

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The RFID tag is nested within the tire structure by placing it between the bead filler and the carcass ply, with the flipper enveloping the bead and providing additional protection. This nested arrangement integrates the electronic component into the existing tire layers without requiring external protective housings or additional manufacturing steps, thus maintaining ease of manufacture while improving protection reliability

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The carcass ply and flipper are positioned beforehand to cushion and protect the RFID tag from distortion and shock before any damage can occur. The fiber layer of the carcass ply acts as a protective barrier that absorbs and distributes mechanical stresses, preventing direct transmission of shock to the electronic component during tire operation

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Device complexity

If the RF tag is embedded without protective fiber layers, then the manufacturing process is simpler, but the electronic component is not protected from distortion and shock

Engineering Contradiction:

Improvedevice complexityVSAvoiddistortion and shock

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The protective fiber layers (carcass ply and flipper) are strategically positioned only in the specific region where the RFID tag is located, rather than throughout the entire tire. This localized protection approach provides necessary shielding against distortion and shock at the critical electronic component location while maintaining overall device simplicity and avoiding unnecessary complexity in other tire regions

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP4019293B1tire

Publication Date: 2023.07.12 TOYO TIRE CORP

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AI summary

The present disclosure provides a tire capable of protecting an electronic component. A tire (1) includes: a pair of beads (11) having a bead core (21) and a bead filler (22) which extends to an outer side in a tire-radial direction of the bead core (21); a flipper (50) which envelops at least part of the bead (11); a carcass ply (23) which has a ply body (24) extending from one bead (11) to another bead (11), and a ply folding part (25) which is folded back at the bead (11), and which envelopes the flipper (50); and an RFID tag (40) as an electronic component embedded within the tire so as to make contact with the flipper (50).