EMC Housing Assembly With Elastic Contacts for Ground Continuity
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Solution Overview
Problem
Existing EMC housings are costly and do not effectively provide a low-impedance, electrically conductive connection between housing parts, compromising electromagnetic shielding efficacy.
Innovation Solution
An EMC housing design featuring a plate-shaped third housing part with elastically deformable contact elements that form conductive connections between the first and second housing parts, ensuring a uniform ground potential and effective shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional rigid connection methods are used to connect housing parts, then structural stability is improved, but electrical conductivity and ground potential uniformity deteriorate
Solution Approach 1:
The contact elements are designed to be elastically deformable, transitioning from a rigid connection concept to a dynamic one. The contact elements can deform under compression forces to establish and maintain electrical contact between housing parts, allowing the connection to adapt to manufacturing tolerances and assembly variations while ensuring reliable electrical conductivity and ground potential uniformity
Solution Approach 2:
The patent changes the physical state and mechanical properties of the contact elements by specifying elastic deformability and compressive strength parameters. By controlling the elastic modulus, deformation range, and compressive force parameters, the contact elements can simultaneously provide structural stability through rigid-like behavior in the assembled state while maintaining electrical conductivity through controlled elastic deformation
2Adaptability or versatility
If multiple housing parts are used to enclose the volume, then adaptability and component attachment capability are improved, but electrical connection reliability and shielding efficacy deteriorate
Solution Approach 1:
The contact elements act as intermediary components between the housing parts, specifically between the mounting plate and the enclosing housing parts. These intermediaries facilitate both mechanical attachment (through the mounting function) and electrical connection (through conductive contact), resolving the contradiction by providing a dual-function interface that maintains shielding efficacy while enabling component attachment
Solution Approach 2:
The housing is segmented into multiple parts (first housing part, second housing part, and mounting plate as third housing part) to provide adaptability and component attachment capability. The segmentation is complemented by the contact elements that ensure electrical continuity between the segmented parts, maintaining shielding efficacy despite the divided structure
3Reliability
If elastically deformable contact elements are used to ensure electrical conductivity, then electrical connection reliability is improved, but manufacturing complexity and cost deteriorate
Solution Approach 1:
The contact elements are designed to perform multiple functions simultaneously: providing electrical conductivity between housing parts, maintaining structural stability through elastic deformation, enabling mechanical attachment via the mounting plate function, and compensating for manufacturing tolerances. This multi-functionality reduces the need for separate components and complex assembly procedures, thereby reducing overall manufacturing complexity despite the specialized properties of the contact elements
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 design achieves low-cost, effective electromagnetic shielding by ensuring a uniform ground potential and conductive connections, minimizing electromagnetic interference while allowing component attachment.
Implementation Method 1
the contact elements are elastically deformed by the housing part contacting the respective contact element
Data Source
AI summary
An EMC housing for an electrical component, having at least a first housing part and a second housing part, which are connected to one another via a sealing surface and together enclose a volume of the housing in a liquid-tight manner. A plate-shaped third housing part is arranged between the first housing part and the second housing part within the volume. The third housing part has a plurality of elastically deformable contact elements in at least one connection region with at least one of the first housing part and the second housing part for forming an electrically conductive connection between the housing parts.