Axial Substrate Pressure Sensor for Compact Design
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Solution Overview
Problem
Conventional pressure sensors have a large size due to substrates disposed in a horizontal direction, limiting miniaturization and increasing material and process costs for electrical connections, while also being prone to contact failures and malfunctions.
Innovation Solution
A pressure sensor with a substrate disposed in an axial direction to reduce size, directly connected to a terminal via an electric wire, and featuring a double contact structure with a spring electrode and additional electrode member for stable electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the substrate is disposed in a horizontal direction, then the electrical connection is stable, but the overall size of the pressure sensor increases
Solution Approach 1:
The substrate is reoriented from a horizontal disposition to an axial disposition, changing the spatial dimension in which the substrate is arranged. This dimensional change allows the substrate to extend along the axial direction where space is more efficiently utilized, reducing the overall sensor size while maintaining electrical connection stability through the new axial configuration
2Reliability
If multiple substrates and spring electrodes are used for electrical connection, then the electrical connection is stable, but the material and process costs increase
Solution Approach 1:
The invention merges the functions of multiple substrates and spring electrodes into a single integrated substrate structure. The substrate is designed to directly connect the sensor module to the terminal portion, eliminating the need for separate spring electrodes and multiple substrates. This consolidation reduces material costs and simplifies the manufacturing process while maintaining stable electrical connection through the integrated design
3Volume of moving object
If the substrate size is reduced for miniaturization, then the pressure sensor can be installed in various places, but the electrical connection becomes unstable
Solution Approach 1:
By changing the substrate disposition from horizontal to axial, the invention achieves miniaturization in the radial dimensions while maintaining electrical connection stability through the axial extension. The axial disposition allows the substrate to achieve sufficient connection length and stability without increasing the overall sensor footprint, enabling installation in compact spaces
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
Enables compact size manufacturing, reduces material and process costs, and prevents contact failures and malfunctions by ensuring stable electrical connections.
Implementation Method 1
a spring electrode, lengthily formed in an axial direction... the substrate coming into contact with the outer circumferential surface of a spring electrode
Data Source
AI summary
The embodiments relate to a pressure sensor comprising: a sensor module which is sensing pressure; a first supporter coupled to an upper portion of the sensor module, having a substrate 231, lengthily disposed therein in an axial direction, and thus electrically connected to the sensor module; and a second supporter to which the substrate is couple while brought into contact with a spring electrode, the second supporter being coupled to an upper portion of the first supporter and having a spring groove in which a lower end portion of spring electrode lengthily disposed in an axial direction is stably placed.