Pressure Sensor Module Integrated Seal Member Assembly
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Solution Overview
Problem
Existing pressure sensor modules face inefficiencies in assembly due to the need for adhesives, small elastic seal members, and the risk of sensor elements being misplaced or reversed during manufacturing, particularly in modules with dimensions of 10 mm or less.
Innovation Solution
A pressure sensor module design incorporating a support member with integrated elastic and hard material sections for sealing and rigidity, guiding fluid and reference pressures to contact surfaces of the sensor element, improving handling and assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is used to seal the sensor element and housing, then sealing performance is improved, but assembly complexity and manufacturing time increase due to additional application and hardening processes
Solution Approach 1:
The patent combines the sealing function and support function into a single integrated seal member that eliminates the need for separate adhesive application. The seal member integrates both structural support and sealing capabilities, reducing assembly steps while maintaining reliable sealing performance between the sensor element and housing
Solution Approach 2:
The seal member is constructed from composite materials that provide both mechanical strength for support and elastic properties for sealing. This composite structure allows the single component to fulfill multiple functions that previously required separate adhesive and support elements
2Productivity
If a single elastic seal member is used to seal the pressure sensor module, then assembly steps are reduced, but handling difficulty increases due to the extremely small size of the seal member in modules with dimensions of 10 mm or less
Solution Approach 1:
The seal member is designed with segmented or multi-functional regions that provide different properties in different areas. This segmentation allows the small component to be more easily handled while maintaining its sealing function, as different portions can be optimized for specific tasks such as engagement, sealing, or positioning
3Device complexity
If the sensor element is placed on a specified surface of the housing during assembly, then the assembly process is simplified, but the risk of misplacement or reversal increases
Solution Approach 1:
The support member incorporates asymmetric features such as directional protrusions, non-symmetric engagement surfaces, or oriented structural elements that ensure the sensor element can only be placed in the correct orientation. This asymmetric design prevents reversal or misplacement while maintaining assembly simplicity
Solution Approach 2:
The support member is designed with self-aligning features that automatically guide the sensor element into the correct position during assembly. The structural design of the support member provides built-in positioning mechanisms that ensure proper orientation without requiring additional alignment steps or external guidance
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
Enhances assembly efficiency by ensuring accurate placement and sealing of sensor elements, reducing the risk of misplacement and improving electrical connections, while maintaining reliable sealing performance.
Implementation Method 1
a support member that supports the sensor element and is held in the housing; a first pressure passage that guides the fluid pressure to a first contact surface of the sensor element; and a second pressure passage that is sealed from the first pressure passage and guides the reference pressure to a second contact surface of the sensor element. The support member is a structure that is formed by integrating an elastic material section exerting sealing performance on the first pressure passage and the second pressure passage and capable of being elastically deformed
Data Source
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AI summary
The present invention provides a pressure sensor module capable of improving work efficiency during assembly. The pressure sensor module detects a fluid pressure on the basis of a differential pressure between a reference pressure and the fluid pressure, and includes: a housing; a sensor element that can contact each of the reference pressure and the fluid pressure; a support member that supports the sensor element and is held in the housing; a first pressure passage that guides the fluid pressure to a first contact surface of the sensor element; and a second pressure passage that is sealed from the first pressure passage and guides the reference pressure to a second contact surface of the sensor element. The support member is a structure that is formed by integrating an elastic material section exerting sealing performance on the first pressure passage and the second pressure passage and capable of being elastically deformed and a hard material section, rigidity of which is higher than the elastic material section.