Spring-Equipped Tire Pressure Sensor Housing for Vibration Damping

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Solution Overview

Problem

Tire pressure-monitoring systems face inaccuracies in wheel position assignment and measurement due to vibrations on uneven road surfaces, leading to incorrect measurement results and potential misinterpretation of tire conditions.

Innovation Solution

Incorporation of a spring element operatively connected to the rim well, providing a secure and constant bearing for the electronic system housing, which acts as a buffer against vibrations and ensures accurate wheel assignment and rotation detection, even on uneven surfaces, through pre-stress and protective coatings or feet.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the electronic system housing is rigidly mounted to the rim well, then the structural stability is improved, but the measurement accuracy deteriorates due to vibrations on uneven road surfaces

Engineering Contradiction:

Improvestructural stabilityVSAvoidmeasurement accuracy

Core Design Contradiction:

Stability of the object's compositionVSMeasurement precision

Solution Approach 1:

The patent applies beforehand cushioning by introducing a spring element between the electronic system housing and the rim well before vibrations occur. This spring element acts as a cushion that absorbs and dampens vibrations from uneven road surfaces, preventing them from reaching the acceleration sensors and affecting measurement accuracy, while still maintaining structural stability through the spring connection.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Stability of the object's composition

If the electronic system housing is rigidly mounted to the rim well, then the structural stability is improved, but the wheel position assignment reliability deteriorates due to vibrations on uneven road surfaces

Engineering Contradiction:

Improvestructural stabilityVSAvoidwheel position assignment reliability

Core Design Contradiction:

Stability of the object's compositionVSReliability

Solution Approach 1:

The spring element serves as a beforehand cushioning mechanism that isolates the electronic system housing from vibrations before they can cause incorrect wheel position assignment. By absorbing vibrational energy, the spring element ensures that the acceleration sensors maintain reliable and accurate wheel position detection even when traveling on uneven surfaces.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Measurement precision

If a spring element is introduced between the electronic system housing and the rim well, then the measurement accuracy is improved by buffering vibrations, but the device complexity increases

Engineering Contradiction:

Improvemeasurement accuracyVSAvoiddevice complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The spring element acts as an intermediary component between the electronic system housing and the rim well. This simple mechanical intermediary absorbs vibrations and protects the sensitive measurement system, improving measurement accuracy without requiring complex active vibration cancellation systems or sophisticated control algorithms.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Reliability

If a spring element is introduced between the electronic system housing and the rim well, then the wheel position detection reliability is improved by buffering vibrations, but the device complexity increases

Engineering Contradiction:

Improvewheel position detection reliabilityVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The spring element serves as a simple intermediary mechanical component that improves wheel position detection reliability by isolating the acceleration sensors from vibrations. This passive mechanical solution avoids the need for complex electronic compensation systems or sophisticated signal processing algorithms, thereby maintaining device simplicity while enhancing reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 enhances the reliability of tire pressure measurement and wheel position detection, providing unambiguous results and improved accuracy across various road conditions, reducing the risk of premature wear and accidents.

Implementation Method 1

the spring element serves essentially as a buffer between the electronic system housing and the rim well

Methodology Applied

Scientific EffectVibration buffering: Damping

Implementation Method 2

This spring element permits the electronic system housing to bear in a secure and constant fashion, preferably under pre-stress, against the rim well

Methodology Applied

Scientific EffectElastic pre-stress: Elasticity

Data Source

PatentUS8677812B2Device for measuring tire pressure having a system housing provided with a resilient means

Publication Date: 2014.03.25 DR ING H C F PORSCHE AG

AI summary

A device for measuring the tire pressure in a pneumatic tire of a vehicle, having an electronic system housing which has an electronic system for measuring values, acted on by a tire valve, for the tire pressure, wherein the electronic system for measuring values is assigned a receiver arranged outside the pneumatic tire, and wherein the electronic system housing is arranged in the region of the rim well of a rim for the pneumatic tire and is indirectly or directly connected to the tire valve, wherein at least one spring element which is operatively connected to the rim well is provided on the electronic system housing.