Gas Detection Module Seal Design for Tire Pressure Monitoring
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Solution Overview
Problem
Existing tire monitoring systems face challenges in detecting physical values of gaseous media, such as tire pressure, under harsh environmental conditions due to issues with integration, manufacturability, robustness, reliability, and precision, particularly in designs with multiple interfaces that increase the risk of pressure leakage and mechanical stress.
Innovation Solution
A module for detecting physical values of a gaseous medium is designed with a discrete component and a supply-line component, where a seal directly contacts the surface of the discrete component and the supply-line component, allowing direct influence on the detection section and fulfilling sealing criteria, enabling reliable detection even under severe conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple interfaces are used for integration and sealing, then the module can be assembled with separate components, but the risk of pressure leakage and mechanical stress increases
Solution Approach 1:
The patent combines the sealing function directly into the detection section of the discrete component, eliminating the need for separate sealing interfaces. The detection section is designed to be in direct contact with the gaseous medium, and sealing is achieved through the discrete component's own structure rather than through multiple external sealing interfaces, thus reducing leakage risk while maintaining ease of manufacture.
Solution Approach 2:
The patent extracts the sealing function from separate sealing components and integrates it directly into the detection section. By taking out the need for external sealing interfaces and incorporating sealing capability into the detection section itself, the design reduces the number of potential leakage points while simplifying the overall assembly process.
2Reliability
If a seal is provided that directly contacts the discrete component surface, then sealing reliability is improved, but the mechanical stress on the discrete component increases
Solution Approach 1:
The patent merges the sealing function with the detection section by designing the detection section to directly contact the gaseous medium. The discrete component is configured with its detection section exposed to the medium, and sealing is achieved through this direct contact configuration rather than through external seals that would apply mechanical stress to the component.
3Measurement precision
If the detection section is directly exposed to the gaseous medium, then measurement precision is improved, but the robustness of the module decreases
Solution Approach 1:
The patent applies local quality by exposing only the detection section to the gaseous medium while protecting other parts of the discrete component. The detection section is specifically designed to contact the medium for accurate measurement, while the rest of the component remains protected within the module housing, thus maintaining both measurement precision and robustness against harsh environmental conditions.
Data Source
AI summary
A module for detecting a physical value of a gaseous medium includes a discrete component including a detection section on a surface, the discrete component being configured to detect the physical value of the gaseous medium that acts on the detection section, a supply-line component configured to introduce the gaseous medium to the detection section, a seal in contact with the supply-line component and the surface of the discrete component and configured to fluidly seal the detection section on the surface of the discrete component. The seal includes a seal lip configured to enclose the detection section such that the seal forms a sealing space, the sealing space including the detection section and being separated from an external space by the seal.