Sealing System for Electrical Equipment Using Flexibility Differential
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Solution Overview
Problem
Existing electrical equipment sealing solutions, particularly in vehicles, face challenges due to double junctions between different material interfaces, leading to sealing issues and potential liquid runoff through cables, and existing solutions are either ineffective or excessively costly.
Innovation Solution
A sealing system comprising a rigid base and a flexible cap, with the cap's holes being smaller than the cables, ensuring no liquid flow by capillarity, and a uniform compression mechanism to improve sealing efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a double junction sealing system is used with different material interfaces, then cable penetration is enabled, but sealing reliability deteriorates due to compression differences causing liquid runoff
Solution Approach 1:
The sealing system is divided into three distinct sealing elements: a first sealing element at the bearing-seal interface, a second sealing element at the seal-cover interface, and a third sealing element at the cover-bearer interface. This segmentation allows each element to independently address sealing at specific interfaces, preventing liquid runoff paths that would occur in a double junction system.
Solution Approach 2:
The bearing housing acts as an intermediary component that provides a sealed passage for cable penetration. The housing includes integrated sealing surfaces and passages that mediate between the bearing and cover, eliminating the need for a separate rubber seal with double junctions while maintaining cable access capability.
2Reliability
If connectors are installed on the cavity wall to seal cable passages, then sealing reliability is improved, but manufacturing cost increases significantly
Solution Approach 1:
The sealing function is merged into the existing bearing housing structure rather than being a separate component. The housing includes integrated sealing surfaces, passages, and compression mechanisms that combine multiple functions (structural support, cable guidance, sealing) into a single manufactured part, eliminating the need for expensive separate connectors.
Solution Approach 2:
The bearing housing serves multiple functions: it provides structural support for the bearing, creates sealed passages for cable penetration, provides sealing surfaces for multiple sealing elements, and enables compression sealing through its rigid structure. This multi-functionality eliminates the need for dedicated sealing connectors.
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
The proposed sealing system effectively prevents liquid ingress and ensures a uniform compression seal, enhancing the reliability and cost-effectiveness of sealing electrical equipment cavities.
Implementation Method 1
The seal of the cover makes it possible to seal the cavity in order to protect the active part of the electrical equipment. However, in the present case, the seal comprises a double junction.
Data Source
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AI summary
The present invention relates to a sealing system (20) configured to make a watertight electrical connection on one face of an electrical equipment, said sealing system (20) comprising: a base (A), comprising a first plate (A1), comprising a through orifice (A2) the edge of which is continuously included in a face of said first plate (A1), a plug (B) comprising a second plate (B1) comprising at least one through hole (B11), intended for the passage of at least one electrical wire, and a projecting part (B2) from said plate (B1) adapted to fit into the orifice (A2), a face of the second plate (B1) coming against a face of the first plate (A1), said plug (B) having a greater flexibility than the flexibility of the base (A), so that the difference in flexibility ensures a constraint of the second plate (B1) on the first plate (A1), so as to ensure the sealing of the electrical equipment.