Tire Sensor Container with Air Cooling Channel

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Solution Overview

Problem

Existing sensor attachment technologies to tires face issues with high temperatures causing sensor damage and adhesives failing at elevated temperatures, leading to costly replacements and instability during shock events.

Innovation Solution

A tire integral type container structure with a bottom container attached to the inner liner, a top container with an insertion space for the sensor, and a channel part for air cooling, allowing for temperature regulation and easy sensor replacement, integrated with the tire using vulcanized rubber and crosslinkable elastomers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a case and sensor are integrated to prevent friction heat damage, then sensor breakdown due to high temperature is prevented, but the sensor cannot be replaced separately and the entire device must be replaced

Engineering Contradiction:

Improvesensor durabilityVSAvoidsensor replaceability

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The device is segmented into two replaceable parts: the container (housing) and the sensor. The sensor can be independently removed and replaced from the container without replacing the entire device, solving the repairability issue while maintaining protection against friction heat.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The container serves as an intermediary structure that protects the sensor from friction heat while allowing independent replacement. The container absorbs the thermal stress and mechanical shock, mediating between the harsh environment and the sensitive sensor.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of manufacture

If adhesive is used to attach case to inner liner, then easy attachment is achieved, but adhesive ages and adhesion surface is damaged at temperatures over 140 degrees

Engineering Contradiction:

Improveattachment simplicityVSAvoidadhesion stability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The adhesive is designed as a temporary bonding agent that is replaced by a more durable mechanical attachment method (rubber adhesion) after the tire vulcanization process. The adhesive serves its purpose during manufacturing but is superseded by the heat-resistant rubber bond.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The attachment method transitions from chemical bonding (adhesive) at low temperatures to thermal-mechanical bonding (rubber adhesion) at high temperatures during vulcanization. This parameter change enables both easy initial attachment and long-term heat-resistant bonding.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If sensor is inserted in case and fixed by case structure, then sensor protection is achieved, but friction heat between case and sensor causes sensor breakdown

Engineering Contradiction:

Improvesensor protectionVSAvoidinternal case temperature

Core Design Contradiction:

ReliabilityVSTemperature

Solution Approach 1:

The sensor is extracted from direct contact with the inner liner and placed inside the container, which is attached to the outer surface of the tire. This extraction removes the sensor from the high-friction, high-temperature zone while maintaining protective enclosure.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The container is made of flexible rubber material that can absorb thermal expansion and mechanical shock without transmitting excessive heat to the sensor. The flexible shell provides thermal isolation while maintaining structural protection.

Inventive Principle:

Principle #30Flexible shells and thin films

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

Prevents sensor breakdown due to high temperatures, allows for easy replacement, and maintains stability during tire shocks, ensuring the sensor remains attached and functional.

Implementation Method 1

a channel part that is formed on the inner side of the top container, in which the channel part is provided such that air can cool the sensor by flowing inside and outside with the sensor inserted in the top container

Methodology Applied

Scientific EffectConvection: Convection

Implementation Method 2

integrated with the tire using vulcanized rubber and crosslinkable elastomers

Methodology Applied

Scientific EffectVulcanization: Chemical Bonding

Data Source

PatentUS11613146B2Container structure for attaching sensors to tires and method of manufacturing tire container structure

Publication Date: 2023.03.28 HANKOOK TIRE WORLDWIDE

AI summary

Provided is a container structure for attaching sensors to tires and, more particularly, to a container structure for attaching sensors to tires, the container structure being able to prevent sensors attached to tires from being damaged by intense heat. The container structure can include: a bottom container that is attached to the inner liner of a tire; a top container that extends from the top of the bottom container and has an insertion space in which a sensor can be inserted; and a channel part that is formed on the inner side of the top container, in which the channel part is provided such that air can cool the sensor by flowing inside and outside with the sensor inserted in the top container.