Electromagnetic Valve Substrate Segmentation for Sealing
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Solution Overview
Problem
Existing electromagnetic valves suffer from reduced sealing performance due to misalignment of pressure sensors and introduction holes, leading to increased size and complexity, and difficulties in maintenance.
Innovation Solution
The electromagnetic valve design includes separate substrates for each pressure sensor, aligned perpendicularly to the spool valve's movement direction, with sealing members that prevent leakage and facilitate easy maintenance by allowing for separate replacement of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If pressure sensors are mounted on a single substrate, then the device structure is simplified, but sealing performance deteriorates due to misalignment between sensors and introduction holes
Solution Approach 1:
The patent divides the substrate into two separate substrates: a first substrate for the first pressure sensor and a second substrate for the second pressure sensor. This segmentation allows each substrate to be independently positioned and aligned with its corresponding pressure introduction hole, ensuring proper sealing while maintaining structural organization.
2Ease of manufacture
If pressure sensors are mounted on a single substrate, then assembly is simplified, but the planar size of the valve is enlarged
Solution Approach 1:
The patent transitions from a planar arrangement of sensors on a single substrate to a three-dimensional configuration where two substrates are stacked vertically. The first substrate is positioned above the second substrate in the vertical direction, allowing both sensors to be accommodated without increasing the planar footprint of the valve.
3Device complexity
If pressure sensors are mounted on a single substrate, then component count is reduced, but maintenance difficulty increases
Solution Approach 1:
By segmenting the substrate into two separate substrates, each housing a pressure sensor, the patent enables independent access and replacement of each sensor. The first substrate can be accessed via the first opening and the second substrate via the second opening, allowing maintenance without disassembling the entire valve structure.
4Reliability
If sealing members are used between sensors and introduction holes, then leakage is prevented, but alignment errors reduce sealing effectiveness
Solution Approach 1:
The patent creates separate mounting substrates for each pressure sensor, allowing each substrate to be independently aligned with its corresponding pressure introduction hole. This independent alignment capability ensures that sealing members can effectively prevent leakage even when accounting for manufacturing tolerances, as each sealing interface can be optimized separately.
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 enhances sealing performance, reduces the valve's size, and simplifies maintenance by allowing for independent replacement of sensor substrates and housing units.
Implementation Method 1
The first pressure sensor is fitted in the first pressure introduction hole and is configured to detect a pressure of a fluid output from the first output port
Implementation Method 2
The second pressure sensor is fitted in the second pressure introduction hole and is configured to detect a pressure of a fluid output from the second output port
Implementation Method 3
The first sealing member is arranged between the first pressure sensor and an inner wall surface of the first pressure introduction hole
Implementation Method 4
The second sealing member is arranged between the second pressure sensor and an inner wall surface of the second pressure introduction hole
Data Source
AI summary
An electromagnetic valve includes a valve casing, which has a valve hole, a spool valve in the valve hole, first and second output ports each communicating with the valve hole, first and second pressure introduction holes, which respectively communicate with the first and second output ports, first and second pressure sensors, which is respectively fitted in the first and second pressure introduction holes, sealing members, which are arranged between the respective pressure sensors and the pressure introduction holes, first and second substrates, on which the corresponding first and second pressure sensors are mounted, and a housing, which accommodates the first and second substrates, has the first and second pressure introduction holes, and is attached to the valve casing. The first and second substrates are arranged to be opposed to each other in a state of being upright in a direction perpendicular to the movement direction of the spool valve.