Sealed Plug Cover Assembly for Dust- and Water-Resistant Housings
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Solution Overview
Problem
Electronic apparatuses face challenges in providing a tight and sealed assembly against external influences such as water and dust, while maintaining ease of assembly and ensuring reliable electrical connections for actuating drives.
Innovation Solution
The housing is connected to a pot-shaped cover in a sealing manner, utilizing an annular seal with a larger diameter than the mating plug part, and a potting socket that contacts both the plug and mating plug parts, with fastening elements and a casting compound for a secure and space-saving assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the housing is connected to the cover in a sealing manner with an annular seal, then protection against external influences (water, dust, corrosion) is improved, but device complexity increases
Solution Approach 1:
The annular seal is integrated into the cover structure, forming a nested configuration where the seal is housed within the cover's annular seal groove. This nesting eliminates the need for separate seal mounting operations and reduces assembly complexity while maintaining effective sealing against water, dust and corrosion.
Solution Approach 2:
The sealing function is merged with the cover structure by integrating the annular seal directly into the cover. This combination of the cover and seal into a single integrated component simplifies the overall assembly and reduces the number of separate parts that need to be assembled.
2Ease of operation
If the plug part and mating plug part are releasably connected, then ease of assembly and disassembly is improved, but reliability of electrical connection may worsen
Solution Approach 1:
The plug part is pre-potted with casting compound that extends onto the rear side of the plug part, creating a preliminary sealing and mechanical bonding structure. This preliminary action ensures that when the plug part is inserted into the cover, the casting compound already provides corrosion protection and mechanical stability, maintaining reliability during repeated assembly and disassembly operations.
Solution Approach 2:
The casting compound acts as a composite material that provides both mechanical bonding (reliability) and corrosion protection. This composite material bridges the gap between the plug part and the housing/cover, ensuring reliable electrical connections are maintained even during releasable assembly and disassembly operations.
3Object-affected harmful factors
If the annular seal has a larger diameter than the mating plug part, then sealing effectiveness is improved, but device complexity increases
Solution Approach 1:
The annular seal with larger diameter than the mating plug part serves multiple functions: it seals against external influences (water, dust), provides structural support for the cover, and creates a sealing surface between the cover and housing. This multi-functionality justifies the slightly increased structural complexity by eliminating the need for additional sealing components.
Data Source
AI summary
It is proposed in an electronic apparatus having a housing which has an opening into which a plug part of an electrical plug connection is inserted, wherein the opening is able to be closed with a pot-shaped cover that receives a mating plug part of the electrical plug connection, wherein the plug part on the rear side thereof is potted, that the housing is connected to the cover in a sealing manner.