Airbag Pressure Sensor Housing Integrates Terminal and Support
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pressure sensing apparatus for airbags require a separate printed circuit board (PCB) for sensor element mounting, increasing the number of assembly processes and complexity.
Innovation Solution
A pressure sensing apparatus with a housing that includes a terminal part and an elastic pressing part to securely mount the sensor element without a PCB, using a support protrusion, guide ribs, and a detachable cover with a hook member for stable electrical contact and sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate PCB is used to mount the sensor element, then electrical connection and sensor mounting are achieved, but the number of assembly processes increases and device complexity increases
Solution Approach 1:
The patent merges the PCB's electrical connection function with the housing's mechanical support function. The terminal part is integrated into the housing, and the sensor element is directly mounted on the housing's support protrusion, eliminating the separate PCB component and reducing assembly complexity while maintaining reliable electrical connection and mechanical support.
2Reliability
If a separate PCB is used to mount the sensor element, then electrical connection is achieved, but the number of parts increases
Solution Approach 1:
The electrical connection function previously requiring a separate PCB is merged into the housing structure through the integrated terminal part. This reduces the number of discrete parts while ensuring stable electrical connection between the sensor element and the external circuit.
3Ease of manufacture
If the sensor element is directly mounted without a PCB, then assembly process is simplified, but electrical connection stability may be compromised
Solution Approach 1:
The housing is designed with an integrated terminal part that provides both mechanical support and electrical connection functions. The sensor element is mounted directly on the housing's support protrusion, and the terminal part establishes electrical connection with the sensor element, achieving both assembly simplification and electrical connection reliability.
Solution Approach 2:
The terminal part acts as an intermediary component that bridges the sensor element and the external circuit. It provides a stable electrical connection interface while being integrated into the housing structure, ensuring reliable signal transmission without requiring a separate PCB.
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
Simplifies the assembly process by eliminating the need for a PCB, enhances the stability and reliability of sensor element mounting, and improves airtightness and operational precision.
Implementation Method 1
an elastic pressing part having one side connected to the cover and the other side protruded toward the sensor element so as to press the sensor element, and formed of an elastically deformable material
Data Source
AI summary
A pressure sensing apparatus for an airbag may include: a sensor element configured to measure a change of air pressure by a vehicle collision; a housing having the sensor element seated therein, including a terminal part electrically connected to the sensor element, and fixed to a vehicle body; a cover detachably installed on the housing; and an elastic pressing part having one side connected to the cover and the other side protruded toward the sensor element so as to press the sensor element, and formed of an elastically deformable material. The housing may include a support protrusion to support the bottom of the sensor element with the terminal part.