Opposing Terminals for Compact Pressure Sensor Integration
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Solution Overview
Problem
The integration of a pressure sensor within an electrically powered pump often results in increased pump size due to the sensor's physical presence, as seen in existing configurations.
Innovation Solution
A pressure sensor device is designed with terminals projecting in opposite horizontal directions, allowing it to be housed in a compact manner within the pump, utilizing a sensor case with specific terminal housing portions and lead wire connections to maintain a small form factor while enabling accurate pressure measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure sensor is disposed inside an electrically powered pump to measure fluid pressure, then pressure measurement functionality is achieved, but the pump size increases
Solution Approach 1:
The pressure sensor is nested within the motor housing space, utilizing the existing void volume inside the motor assembly. The sensor is positioned in the space between the motor stator and rotor, allowing pressure measurement without adding external volume to the pump system.
Solution Approach 2:
The terminals are arranged in a planar configuration on the sensor body, with lead wires extending in opposite directions along the same plane. This two-dimensional terminal arrangement allows compact integration within the limited space of the pump housing without requiring three-dimensional volume expansion.
2Ease of manufacture
If a pressure sensor with terminals and lead wires is integrated into the pump, then electrical connections are established, but the device complexity increases
Solution Approach 1:
The sensor housing is merged with the motor housing structure, forming a unified assembly. The pressure sensor, its housing, terminals, and lead wires are integrated as a single sub-assembly that fits within the existing pump architecture, reducing the number of separate components and assembly steps.
Solution Approach 2:
The motor housing serves multiple functions: it houses the motor components, provides structural support, and acts as the housing for the pressure sensor assembly. This multi-functionality eliminates the need for a separate sensor housing, simplifying the overall device structure.
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
This configuration prevents the electrically powered pump from becoming larger, allowing for a compact and efficient integration of the pressure sensor, thereby maintaining the pump's size and functionality.
Implementation Method 1
a pressure sensor to measure a pressure of a fluid inside the electrically powered pump
Data Source
AI summary
A sensor case of pressure sensor device includes a sensor housing portion, a first terminal housing portion that extends from the sensor housing portion in a first direction, and a second terminal housing portion that extends from the sensor housing portion in a second direction. The first terminal housing portion includes a first upper-side opening that opens upward, and a first lower-side opening that opens downward. The second terminal housing portion includes a second upper-side opening that opens upward, and a second lower-side opening that opens downward. A first terminal includes a first exposed portion including an upper surface exposed to outside of the first terminal housing portion through the first upper-side opening and a lower surface exposed to outside of the first terminal housing portion through the first lower-side opening. A second terminal includes a second exposed portion including an upper surface exposed to outside of the second terminal housing portion through the second upper-side opening and a lower surface exposed to outside of the second terminal housing portion through the second lower-side opening. The first exposed portion includes a first lead wire connection portion to which a first lead wire is connected. The second exposed portion includes a second lead wire connection portion to which a second lead wire is connected.