Face Seal Integrity Testing via Conductive Gasket Voltage Sensing
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Solution Overview
Problem
Electrical systems face issues with face seals, such as gaskets, being accidentally omitted or damaged during assembly, leading to potential faults and failures due to ingress of contaminants and electromagnetic interference.
Innovation Solution
A method and system using probes with spring-loaded sliding grips to test the integrity of conductive gaskets within perimeter grooves by measuring voltage differences and transfer impedance, ensuring the gasket is intact and functional.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional visual inspection methods are used to check gasket integrity, then the inspection process is simple and quick, but the detection precision is insufficient to reliably detect damaged or missing gaskets
Solution Approach 1:
The patent replaces traditional visual inspection methods with an electrical measurement system that uses probes to measure voltage or impedance across the gasket. This substitution of mechanical/visual inspection with electrical measurement enables precise detection of gasket integrity without requiring complex imaging or inspection equipment.
Solution Approach 2:
The patent introduces an electrical probe as an intermediary tool that makes contact with the gasket to measure its electrical properties. This intermediary device enables indirect measurement of gasket integrity through electrical parameters, providing reliable detection while keeping the testing system relatively simple.
2Productivity
If the gasket is tested by disassembling the enclosure and lid, then the testing can be performed manually with simple tools, but the testing time increases and productivity decreases
Solution Approach 1:
The patent enables testing to be performed on the assembled enclosure-lid-gasket assembly without requiring disassembly. The probes can access the gasket through openings in the enclosure, allowing the test to be conducted in advance of final assembly completion and eliminating the need for time-consuming disassembly operations.
3Measurement precision
If the gasket integrity test requires access to the gasket through disassembly, then the measurement can be direct, but the device complexity increases and the testing process becomes more complicated
Solution Approach 1:
The patent uses the enclosure and lid structure itself as an intermediary medium to facilitate probe access to the gasket. By designing the enclosure with accessible openings and using the existing structural components, the system achieves direct electrical contact with the gasket without requiring additional complex access mechanisms or disassembly procedures.
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
Ensures the integrity and performance of face seals by detecting damaged or missing gaskets, preventing contamination and electromagnetic interference, and providing accurate impedance measurements for performance evaluation.
Implementation Method 1
positioning the needle of the first probe within the first notch formed in an outer groove wall that surrounds the perimeter groove may include biasing a base of the first probe against the outer groove wall via a spring-loaded sliding grip of the first probe
Implementation Method 2
comparing an input voltage from the first probe in the first notch with an output voltage that is induced in the fasteners and transferred to the second probe in the second notch
Data Source
AI summary
Testing a gasket within a groove formed around a top of an enclosure and covered by a lid, including steps of: positioning a needle of a probe within a notch formed in an outer wall that surrounds the groove; and: injecting input current through the probe; comparing input voltage from the probe in the notch and an output voltage induced in conductive fasteners that secure the lid to the enclosure, to determine that a difference in the voltages is within a predetermined range, where voltage at the fasteners is measured with another probe; or injecting the input current into the fasteners; and comparing the input voltage at the fasteners with the output voltage induced in the gasket and measured via the probe in the notch, to determine that the difference in the voltages is within the predetermined range, where voltage at the fasteners is measured with the another probe.