Shielded Connector Cage Deformation for EMI-Resistant Assembly
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Solution Overview
Problem
Existing electric power connectors in hybrid and electric motor vehicles suffer from reduced shielding performance due to openings that compromise electromagnetic interference reduction, despite the use of shielding cages.
Innovation Solution
A connection assembly with a connector and counter-connector featuring a shielding cage that is immobilized through deformation-based attachment means, eliminating the need for openings and enhancing shielding continuity by using a retaining device to secure the internal and external casing elements, thereby maintaining electrical contact and preventing translation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If openings are provided in the shielding cage to attach casing elements, then the ease of manufacture and assembly is improved, but the electromagnetic shielding performance deteriorates
Solution Approach 1:
The shielding cage is divided into two separate half-cages that are assembled around the internal casing element. This segmentation allows the cage to be manufactured and assembled more easily while maintaining continuous shielding without requiring openings in the cage structure.
Solution Approach 2:
The internal casing element is inserted through an opening in the external casing element, and then the shielding cage is assembled around the internal casing element. This nested arrangement allows secure attachment of casing elements without creating openings in the shielding cage itself.
2Reliability
If the shielding cage is made secure to prevent movement, then the reliability of electrical contact is improved, but the device complexity increases
Solution Approach 1:
The attachment means are formed by deforming portions of the shielding cage itself rather than adding separate fastening components. This merging of the shielding function with the attachment function maintains shielding continuity while securing the cage to the casing element without increasing overall device complexity.
Solution Approach 2:
The shielding cage incorporates elastic fingers that provide flexible yet secure attachment to the external casing element. This dynamic element ensures reliable electrical contact and shielding continuity while accommodating minor dimensional variations without requiring complex rigid fastening mechanisms.
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 effectively improves the electromagnetic shielding performance by maintaining continuous contact between the shielding cages, reducing electromagnetic interference without the need for openings, thus enhancing the overall connectivity and interference reduction in high-current applications.
Implementation Method 1
use is made of shielding on the cables, and on the connectors. This shielding comprises metal sheets forming shielding sleeves or cages surrounding an internal portion of a casing in which male or female contacts are accommodated
Implementation Method 2
the shielding cage of the connector has attachment means which are formed by deformation of the shielding cage of the connector, without an opening being created
Data Source
AI summary
Connection assembly comprising a connector and a counter-connector. The shielding cage of the connector has attachment means which are formed by deformation of the shielding cage, without an opening being created. The attachment means are configured to prevent the internal element of the connecting casing from moving in translation with respect to the shielding cage, parallel to the coupling direction (A). The shielding cage is prevented from moving in translation parallel to the coupling direction (A) with respect to the external casing element with the aid of the retaining device.