Tire Pressure Sensor Retaining Device with Sealing Compound

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Solution Overview

Problem

Tire pressure sensor units installed on the inner wall of vehicle tires are prone to damage and dysfunction during punctures, leading to delayed detection of pressure loss by drivers, compromising vehicle safety and stability.

Innovation Solution

A tire pressure sensor unit arrangement with a retaining device connected to the inner wall of the tire tread, utilizing a sealing compound to prevent short-term pressure loss by sealing punctures, and optionally incorporating a puncture-stopping or low-friction material and an electrical connection system for enhanced protection and data security.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a tire pressure sensor unit is installed in a retaining device on the inner wall of the tire tread, then the sensor unit can monitor tire pressure, but the sensor unit is vulnerable to damage during punctures leading to delayed detection of pressure loss

Engineering Contradiction:
Improveoperational reliability of the sensor unitVSAvoiddamage to sensor unit during puncture
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

A sealing compound is applied to the inner wall of the tire tread in the area of the sensor unit before puncture occurs. This sealing compound creates a protective layer that cushions and seals puncture wounds, preventing the sensor unit from being directly exposed to and damaged by sharp objects during puncture events.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The sealing compound acts as an intermediary layer between the sharp puncturing object and the sensor unit. This intermediate substance seals the puncture hole and prevents direct contact between the harmful sharp object and the sensor unit, thereby protecting the sensor from damage while still allowing pressure monitoring to function.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If the retaining device is made of rubber material for flexibility, then the sensor unit can be securely held, but the retaining device offers insufficient protection against puncture forces

Engineering Contradiction:
Improvesecure holding of sensor unitVSAvoidprotection against puncture forces
Core Design Contradiction:
Ease of operationVSStrength

Solution Approach 1:

The solution combines the rubber retaining device with a sealing compound applied to the inner wall. This composite approach maintains the flexibility and secure holding properties of the rubber retaining device while adding the puncture-resistant properties of the sealing compound, creating a multi-layer protective system that addresses both requirements.

Inventive Principle:
Principle #40Composite materials

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

The solution ensures high operational reliability of the vehicle by preventing short-term pressure loss and enabling timely detection of tire damage, reducing the risk of accidents and maintaining driving stability.

Implementation Method 1

the sealing compound prevents at least a short-term pressure loss caused by the hole resulting therefrom in that the sealing compound at least tightly seals the hole

Methodology Applied
Scientific EffectSealing:

Data Source

PatentUS8959990B2Arrangement of a tire pressure sensor unit
Publication Date: 2015.02.24 BAYERISCHE MOTOREN WERKE AG
  • US8959990B2 patent drawing
  • US8959990B2 patent drawing

AI summary

An arrangement of a tire pressure sensor unit on the inner wall of the tread of a vehicle tire in a retaining device for the sensor unit is provided. The retaining device is connected to the inner wall, wherein a sealing compound is applied to the inner wall, or in the case of a retaining device having a closed bottom section which is connected to the inner wall, the sealing compound is applied to the bottom section facing the sensor unit. In the event that a foreign object punctures the inner wall, or punctures the inner wall and the bottom section, the sealing compound prevents at least a short-term loss of pressure caused by the hole resulting therefrom in that the sealing compound at least almost tightly seals the hole.