Shielded Connector Housing Layout for Water-Protected Enclosure Bonding
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Solution Overview
Problem
Existing connectors in vehicles are susceptible to reduced electromagnetic shielding performance due to water exposure at the connection points of the shield shell and braided wire, as well as the shield shell and enclosure, leading to unstable electrical connections.
Innovation Solution
The connector design includes a shield shell with a first part arranged inside the connector housing and a second part inside the enclosure, with the second part being fixed and electrically connected to the enclosure, ensuring that these connection points are protected from water exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shield shell and braided wire connection point and shield shell and enclosure connection point are exposed to the outside, then the connector structure is simple and easy to manufacture, but water may adhere to these connection points causing unstable electrical connection and reduced electromagnetic shielding performance
Solution Approach 1:
The shield shell is nested within the connector housing, with its connection points positioned inside the housing cavity rather than exposed externally. This nesting arrangement protects the electrical connections from water exposure while maintaining structural integration, resolving the contradiction between reliability and device complexity
Solution Approach 2:
The connection points are repositioned from the external surface dimension to the internal cavity dimension of the connector housing. This spatial relocation in another dimension protects against water adhesion while keeping the overall connector structure compact and manufacturable
2Reliability
If the second shield connecting portion is located outside the connector housing, then the shield shell and enclosure connection is simplified, but electromagnetic shielding performance may be reduced due to water exposure
Solution Approach 1:
The second shield connecting portion is nested inside the connector housing, positioned within the internal cavity rather than externally. This nesting protects the connection from water exposure, ensuring electromagnetic shielding performance while the integrated design maintains manufacturing simplicity
Solution Approach 2:
The second shield connecting portion is relocated from the external dimension to the internal dimension of the connector housing. This dimensional change protects the connection point from water adhesion while the connection process remains straightforward through internal positioning
Data Source
AI summary
A connector housing to be fixed to an electrically conductive enclosure includes an outer arrangement portion to be arranged outside the enclosure and an inner arrangement portion to be arranged inside the enclosure. A shield shell includes a first part to be arranged inside the outer arrangement portion and a second part to be arranged at a position shifted from the first part in a direction opposite to a first direction. The first part includes a first connecting portion and a second connecting portion to be electrically connected to an electromagnetic shield member of the wire and covers an outer periphery of a part of the wire to be arranged inside the outer arrangement portion. The second part includes a second shield connecting portion to be fixed and electrically connected to the enclosure inside the enclosure.