Multi-Material Shielding Arrangement for Lighter EMI Enclosures
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Solution Overview
Problem
Existing shielding arrangements for electrical or electromagnetic shielding are cost-intensive and heavy due to the use of high-conductivity materials, making them inefficient for larger shielding volumes.
Innovation Solution
A shielding arrangement comprising two connected shielding bodies made of different electrically conductive materials, where a more resilient and costly material is used in contact areas and a cost-effective, lightweight material is used in other areas, allowing for reduced weight and manufacturing costs without compromising shielding effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-conductivity materials are used for shielding arrangements, then shielding effectiveness is improved, but weight and manufacturing costs increase
Solution Approach 1:
The patent applies different materials with different properties to different parts of the shielding arrangement. Specifically, copper (high conductivity, high cost, high weight) is used only for contact areas where electrical conductivity is critical, while aluminum (lower conductivity, lower cost, lower weight) is used for the main shielding bodies where structural shielding is sufficient. This local differentiation resolves the contradiction by providing high shielding effectiveness only where absolutely necessary while reducing overall weight and cost.
Solution Approach 2:
The shielding arrangement uses a composite structure combining two different electrically conductive materials (copper and aluminum) with distinct properties. The first shielding bodies use copper for optimal electrical contact, while the second shielding bodies use aluminum for cost-effective and lightweight structural shielding. This composite approach allows the system to achieve required shielding effectiveness while significantly reducing weight and manufacturing costs compared to using copper throughout.
2Reliability
If high-conductivity materials are used for shielding arrangements, then shielding effectiveness is improved, but manufacturing costs increase
Solution Approach 1:
The patent applies different materials with different properties to different parts of the shielding arrangement. Specifically, copper (high conductivity, high cost, high weight) is used only for contact areas where electrical conductivity is critical, while aluminum (lower conductivity, lower cost, lower weight) is used for the main shielding bodies where structural shielding is sufficient. This local differentiation resolves the contradiction by providing high shielding effectiveness only where absolutely necessary while reducing overall weight and cost.
Solution Approach 2:
The shielding arrangement uses a composite structure combining two different electrically conductive materials (copper and aluminum) with distinct properties. The first shielding bodies use copper for optimal electrical contact, while the second shielding bodies use aluminum for cost-effective and lightweight structural shielding. This composite approach allows the system to achieve required shielding effectiveness while significantly reducing weight and manufacturing costs compared to using copper throughout.
3Weight of moving object
If different materials are used for first and second shielding bodies, then weight and cost are reduced, but material selection complexity increases
Solution Approach 1:
The shielding arrangement is segmented into two distinct functional parts: first shielding bodies for electrical contact and second shielding bodies for structural shielding. This segmentation allows each part to be optimized for its specific function, with copper used where electrical properties matter and aluminum used where structural properties matter, thereby reducing overall weight and cost while keeping the design manageable through clear functional separation.
Solution Approach 2:
The patent applies different materials with different properties to different parts of the shielding arrangement. Specifically, copper (high conductivity, high cost, high weight) is used only for contact areas where electrical conductivity is critical, while aluminum (lower conductivity, lower cost, lower weight) is used for the main shielding bodies where structural shielding is sufficient. This local differentiation resolves the contradiction by providing high shielding effectiveness only where absolutely necessary while reducing overall weight and cost.
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 reduces the weight and manufacturing costs of the shielding arrangement while maintaining its shielding properties, enabling efficient electromagnetic interference protection with adaptable sizing for various applications.
Implementation Method 1
shielding arrangement for electrical or electromagnetic shielding of a shielding volume
Implementation Method 2
the first and the second shielding bodies each consist of different, electrically conductive materials
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a shielding arrangement (1) for electrical or electromagnetic shielding of a shielding volume (5) open at two ends (3), a shielded connection (31) between a housing element (33) and a shielding arrangement (1), and a kit (43) for a shielding arrangement (1). Known solutions are improved in that the shielding arrangement (1) comprises a first shielding body (7) and a second shielding body (9) connected to the first shielding body (7), and that the first (7) and the second shielding body (9) are each made of different, electrically conductive materials (11). In the shielded connection (31), the housing element (33) has a receiving opening (37) in which the shielding arrangement (1) is received and in which the shielding arrangement (1) is mechanically and electrically connected to the housing element (33) by contact springs (25) or by a material bond. The kit (43) comprises a first shielding body (7) and a plurality of second shielding bodies (9, 9a, 9b, 9c), which have different lengths (45, 47, 49) in the direction of passage (17) and are designed to be connectable to the first shielding body (7).