Light Metal Pressure Sensor Housing with One-Piece Port
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Solution Overview
Problem
Existing pressure sensor modules face challenges in reducing material costs and weight while maintaining tightness and avoiding weak points in connection areas, which can lead to measurement inaccuracies due to leaks.
Innovation Solution
A pressure sensor module with a housing and pressure port made from light metals like aluminum or brass, featuring a one-piece design for the housing and pressure connector, and a secure connection system using a combination of form-fitting and material bonding, along with a seal to ensure pressure-tightness and prevent leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If refined steel is used for the pressure port, then tightness and strength are improved, but material costs and weight increase
Solution Approach 1:
The patent changes the material parameter from refined steel to light metal (aluminum or brass), achieving weight reduction while maintaining functional performance through appropriate material selection and design optimization
Solution Approach 2:
The patent employs composite construction by combining light metal for the pressure port with separate sealing components (seal elements) and housing structures, creating a composite system that achieves both weight reduction and tightness through the synergistic combination of different materials
2Ease of manufacture
If multiple housing parts are assembled together, then manufacturing flexibility is improved, but connection points become weak points that may leak
Solution Approach 1:
The patent merges the pressure port and housing into a one-piece construction made from light metal, eliminating the connection points between separate parts that would otherwise serve as potential leak paths, while maintaining manufacturing efficiency through extrusion processes
Solution Approach 2:
The patent uses composite construction by integrating the pressure port as a one-piece component with the housing, where the light metal construction provides both structural integrity and pressure tightness without requiring separate assembly points
3Weight of stationary object
If aluminum or brass is used for the pressure port, then material costs and weight are reduced, but manufacturing precision and tightness may be compromised
Solution Approach 1:
The patent employs composite construction by combining light metal pressure port with separate sealing components (seal elements made of elastomers or plastics), where the seal elements compensate for any dimensional tolerances of the light metal parts, ensuring tightness while maintaining weight advantages
Solution Approach 2:
The patent applies local quality by using different materials for different functional requirements: light metal for the pressure port (weight reduction) and sealing materials for connection areas (tightness), optimizing each local area for its specific function
Data Source
Figure 1
AI summary
The invention relates to a pressure sensor module (10) for determining the pressure of a measured medium, comprising a sensor chip (22), a housing (12) with a pressure connector (14), and a plug part (16) for electrical connection of the pressure sensor module (10). Plug contacts (18) electrically connected to the sensor chip (22) are also provided in the plug part (16). It is also provided for the proposed pressure sensor module (10) that the measured medium can be applied to the sensor chip (22) through the pressure connector (14) and that the pressure connector (14) is produced at least in part from a light metal.