Tire Electronic Component Placement Between Pads

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Solution Overview

Problem

Conventional tires with embedded electronic components, such as RFID tags, face issues with stress and distortion during deformation, leading to potential loss of functionality due to their placement at boundary surfaces between different substances within the tire structure.

Innovation Solution

The electronic component is strategically positioned between the second pad and the side wall rubber, with specific modulus configurations and protective rubber layers, ensuring it remains unaffected by stress and distortion, and is securely embedded within the tire structure to maintain functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the electronic component is arranged at the boundary surface of two different substances (extending from the free edge of the carcass ply), then the component is easily accessible and integrable into the tire structure, but stress and distortion occur upon tire deformation which may cause the component to lose its function

Engineering Contradiction:

Improveintegrability of electronic componentVSAvoidfunctionality of electronic component

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The tire structure is divided into distinct functional zones: a first pad covering the folding end of the carcass ply, a second pad covering the first pad, and side wall rubber covering the second pad. The electronic component is specifically placed within the second pad region, separating it from the high-stress boundary surfaces while maintaining integrability through structured placement.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The first pad and second pad act as intermediary protective layers between the electronic component and the high-stress boundary regions. These pads buffer and distribute stress, preventing direct transmission of distortion to the electronic component while maintaining its functional integrity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Strength

If the electronic component is positioned close to the carcass ply folding end, then the component is securely anchored in the tire structure, but the component is exposed to high stress and distortion during tire deformation

Engineering Contradiction:

Improveanchoring of electronic componentVSAvoidstress and distortion on electronic component

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The electronic component is nested within multiple protective layers: embedded in the second pad, which is itself covered by the first pad, which covers the carcass ply folding end. This nested structure provides secure anchoring while progressively shielding the component from harmful stress and distortion.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The first pad and second pad are positioned beforehand to create a cushioning effect around the electronic component. These pads are specifically designed to absorb and distribute stress before it reaches the component, preventing damage during tire deformation.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Reliability

If the electronic component is embedded deep within the tire structure, then the component is protected from stress and distortion, but the component becomes difficult to access for installation and maintenance

Engineering Contradiction:

Improvefunctionality of electronic componentVSAvoidaccessibility of electronic component

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent positions the electronic component at a specific depth within the tire structure - embedded in the second pad which covers the first pad, but not at the extreme outer surface. This dimensional positioning balances protection from stress while maintaining reasonable accessibility for installation and potential maintenance through the layered structure.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS11440355B2Tire

Publication Date: 2022.09.13 TOYO TIRE CORP

AI summary

A tire includes: a bead filler extending to an outer side in the tire-radial direction of a bead core; a carcass ply folded around the bead core; a steel chafer arranged so as to cover the carcass ply around the bead core; a first pad covering an outer side in the tire-width direction of a folding end of the carcass ply, at the outer side in the tire-radial direction of the end part of the steel chafer; a second pad covering an outer side in the tire-width direction of the first pad; and side wall rubber covering at least part of the outer side in the tire-width direction of the second pad, in which an electronic component is provided between the second pad and the side wall rubber.