Conductive Seal Housing for Gap-Free EMI Shielding
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Solution Overview
Problem
Existing housings for electrical components are expensive and have reduced electromagnetic shielding due to the use of conductive fillers and gaps in connections, leading to inefficiencies in both sealing and shielding.
Innovation Solution
A housing design featuring a compressible element, such as an elastomer seal, combined with an electrically conductive layer that overlaps and is compressed to ensure contact between housing parts, eliminating the need for conductive fillers and gaps, thus providing effective sealing and electromagnetic shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive fillers are added to seals or electrically conductive connecting elements are used to achieve electromagnetic shielding, then electromagnetic shielding is improved, but manufacturing cost increases significantly
Solution Approach 1:
The patent combines the sealing function and electromagnetic shielding function into a single seal element. The seal comprises an elastomer base material integrated with an electrically conductive layer, eliminating the need for separate conductive fillers or additional connecting elements. This merger achieves both sealing and shielding while reducing manufacturing complexity and cost.
Solution Approach 2:
The seal is constructed as a composite material system consisting of an elastomer base material and an electrically conductive layer. This composite structure provides both the elastic sealing properties of the elastomer and the electrical conductivity needed for electromagnetic shielding, avoiding the need for expensive conductive fillers in traditional single-material seals.
2Reliability
If multiple electrically conductive connecting elements are used to ensure sufficient electromagnetic shielding, then shielding is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The seal serves multiple functions simultaneously: it provides mechanical sealing, electrical connection, and electromagnetic shielding. This multi-functionality eliminates the need for separate connecting elements, reducing device complexity while maintaining effective electromagnetic shielding through the integrated conductive layer.
3Ease of manufacture
If traditional seals without compressible elements are used, then manufacturing is simpler, but tolerance deviations cannot be compensated and sealing reliability is reduced
Solution Approach 1:
The seal incorporates a compressible elastomer base material that can dynamically adapt to tolerance deviations and surface irregularities. This dynamic property allows the seal to compensate for manufacturing variations and maintain reliable sealing without requiring overly precise manufacturing tolerances.
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 solution allows for cost-effective manufacturing of housings with enhanced sealing and electromagnetic shielding, compensating for tolerance deviations and ensuring gap-free shielding without the need for expensive conductive materials or additional connections.
Implementation Method 1
at least one compressible element which is at least arranged on the circumferential edge or in or on the circumferential contour and which is arranged between the first housing part and the second housing part in the assembled state
Data Source
AI summary
There is a housing preferably for accommodating electrical components. The housing has the following: (A) at least one first housing part and at least one second housing part, which form a closed housing when assembled, (B) at least the first housing part has a circumferential edge or circumferential contour in an edge area, (C) at least one compressible element, which is at least arranged on the circumferential edge or in or on the circumferential contour, and which is arranged between the first housing part and the second housing part in the assembled state, and (D) and at least one first electrically conductive layer. The first electrically conductive layer covers the inside of the first housing part in the assembled state of the housing.