External Grounding Structure for Compact Electrical Enclosures
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Solution Overview
Problem
The grounding connection portion in existing electrical equipment occupies internal space within the enclosure, hindering the miniaturization of the enclosure.
Innovation Solution
A grounding structure is provided where the grounding connection portion is arranged on the housing wall of a functional device located outside the enclosure, with the housing wall electrically connected to the enclosure, thereby satisfying the grounding requirements without occupying internal space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the grounding connection portion is arranged inside the enclosure, then the grounding connection is secure and reliable, but the internal space of the enclosure is occupied, affecting miniaturization
Solution Approach 1:
The grounding connection portion is moved from the internal space (3D volume constraint) to the external surface (2D surface constraint) of the functional device housing. This dimensional transition allows grounding connections to be established outside the enclosure, eliminating space occupation inside while maintaining grounding reliability through the conductive housing wall.
2Volume of moving object
If the grounding connection portion is arranged outside the enclosure on the functional device housing wall, then the internal space of the enclosure is freed for miniaturization, but the grounding connection structure becomes more complex
Solution Approach 1:
The grounding connection portion is integrated with the functional device housing wall through integral forming or fixed connection. This merging eliminates the need for separate grounding components inside the enclosure, as the housing wall itself serves as the conductive path to ground, thereby simplifying the overall grounding structure despite the external arrangement.
Solution Approach 2:
The functional device housing wall serves dual functions: it provides structural enclosure for the functional device and simultaneously acts as the grounding connection path. This multi-functionality eliminates the need for dedicated grounding components, reducing structural complexity while enabling external grounding arrangement.
Data Source
AI summary
A grounding structure and electrical equipment are provided. The electrical equipment includes a case having a grounding requirement and a functional device at least partially disposed outside the case; the grounding structure includes at least one grounding connecting portion, and the grounding connecting portion is disposed on the housing wall of the part, located outside the case, of the functional device; and the housing wall of the functional device is conductively connected to the case.