Vulcanized Tire Electronics Placement to Prevent Detachment

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Solution Overview

Problem

Existing methods for integrating electronic devices with tires often result in durability reduction and complications due to detachment issues caused by adhesive degradation and deformation, as well as potential damage from tire mounting/demounting tools.

Innovation Solution

Attaching the electronic device to the inner liner or sidewall of the tire by vulcanization, specifically at the radial inner or outer side of the bead filler, where contact shear strength is lowest, and ensuring the device is completely surrounded by a topping member made of the same material, preventing air entrapment and enhancing integration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If adhesive is used to attach electronic device to tire surface, then attachment is achieved, but detachment occurs due to adhesive degradation and tire deformation

Engineering Contradiction:

Improveattachment reliabilityVSAvoidattachment durability

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The patent replaces the chemical adhesive bonding system with a mechanical embedding system. The electronic device is embedded into the tire structure itself, utilizing the tire's own material matrix for mechanical support and retention. This eliminates reliance on adhesive bonds that degrade over time, providing permanent attachment that withstands tire deformation and operational stresses.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The electronic device is nested within the tire structure, specifically embedded in the inner liner or sidewall region. This nesting approach integrates the electronic device as an intrinsic part of the tire rather than a surface attachment, allowing the device to move with the tire during deformation without creating stress concentrations that would cause detachment.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Reliability

If electronic device is inserted inside tire, then integration is achieved, but air layer forms between RFID PCB and rubber reducing durability

Engineering Contradiction:

Improveintegration reliabilityVSAvoidair layer formation

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent employs a flexible topping member that completely covers the electronic device, creating a conformal seal between the device and the surrounding rubber material. This flexible film-like structure eliminates air pockets by ensuring complete contact between the RFID PCB and the rubber matrix, while still allowing for thermal expansion and deformation of the tire during operation.

Inventive Principle:

Principle #30Flexible shells and thin films

3Reliability

If electronic device is attached near bead for integration, then integration is achieved, but device projects causing appearance defect and receives direct force during mounting/demounting

Engineering Contradiction:

Improveintegration reliabilityVSAvoidmounting/demounting damage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by selecting a specific attachment location in the inner liner or sidewall region that is spatially separated from the bead area. This location provides sufficient integration within the tire structure while avoiding the high-stress zones near the beads where mounting and demounting forces are concentrated. The local rubber properties in this region also provide optimal embedding characteristics.

Inventive Principle:

Principle #3Local quality

4Reliability

If electronic device is inserted inside tire, then integration is achieved, but manufacturing process becomes complicated

Engineering Contradiction:

Improveintegration reliabilityVSAvoidmanufacturing process complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements preliminary action by preparing the electronic device with a topping member and attachment structures before tire assembly. This allows the device to be pre-configured and tested independently, then simply embedded into the tire during the vulcanization process. The pre-prepared device reduces complexity during tire manufacturing by eliminating the need for post-assembly modifications or complex integration steps.

Inventive Principle:

Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This method ensures the electronic device is securely integrated with the tire, preventing durability reduction and malfunction due to deformation, while allowing for easy integration without altering existing manufacturing processes.

Implementation Method 1

the electronic device is attached to an inner liner or a side wall of the tire by vulcanization

Methodology Applied

Scientific EffectVulcanization:

Data Source

PatentEP3756909B1Tire integrated with electronic device and manufacturing method thereof

Publication Date: 2024.10.23 HANKOOK TIRE & TECHNOLOGY CO LTD

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AI summary

The invention relates to a tire integrated with an electronic device (120) and a manufacturing method thereof, and more specifically, to a tire integrated with an electronic device provided not to reduce durability of the tire and a manufacturing method of the tire integrated with an electronic device. According to the invention, the tire integrated with an electronic device (120) includes the electronic device attached to an inner liner (110) or a side wall ( 150) of the tire by vulcanization. The electronic device (120) is attached to an inner side or an outer side of an end of a bead filler (130) depending on a length of the bead filler (130).