High Speed Connector Shielding via Metallic Coating
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Solution Overview
Problem
Conventional high speed connectors lack structural strength and fail to effectively shield differential signal terminals, limiting their performance and signal transmission quality.
Innovation Solution
A high speed connector design featuring a housing, insulating core, conductive terminals, and a shielding member with a metallic coating layer on a substrate, where the substrate is detachably fastened to the housing and positioned to establish electrical connections with grounding terminals, effectively shielding differential signal terminals and enhancing structural strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional grounding sheet with elastic arms is used, then the connector provides basic grounding function, but the structural strength is poor and no shielding function is provided
Solution Approach 1:
The grounding sheet is constructed as a composite structure combining a flexible substrate with rigid reinforcing ribs. The substrate provides flexibility and grounding function, while the ribs extend from the substrate to provide structural strength and positioning support, creating a composite material solution that simultaneously addresses both structural integrity and functional requirements
Solution Approach 2:
The grounding sheet is divided into functional segments: a flexible substrate portion for grounding contact and rigid rib portions for structural support and positioning. This segmentation allows each part to perform its specific function optimally while working together as an integrated component
2Reliability
If no shielding structure is added, then the connector structure remains simple, but differential signal terminals are not shielded and performance cannot be improved
Solution Approach 1:
A shielding member is introduced as an intermediary component between external interference sources and the differential signal terminals. This shielding member, with its conductive coating, acts as a mediator that blocks electromagnetic interference while allowing the connector to maintain its basic structure, thereby improving signal quality without fundamentally redesigning the entire connector
3Strength
If a metallic coating layer is applied directly without substrate support, then shielding function is provided, but the metallic coating layer is easily deformed
Solution Approach 1:
A flexible substrate is used as the base for the metallic coating layer. The substrate acts as a supportive film that prevents the thin metallic coating from deforming while maintaining the overall flexibility needed for the grounding sheet to make contact. This combination ensures the shielding function remains intact while providing mechanical stability
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 improves signal transmission quality and performance by providing effective shielding for differential signal terminals while maintaining structural integrity, preventing deformation of the metallic coating layer.
Implementation Method 1
The metallic coating layer is abutted against the two grounding terminals to establish an electrical connection between the two grounding terminals
Implementation Method 2
The metallic coating layer is arranged at the two opposite outer sides of the two differential signal terminals. The metallic coating layer is configured to shield the two differential signal terminals in the width direction
Data Source
AI summary
A high speed connector includes a housing, an insulating core inserted into the housing, a plurality of first conductive terminals and a plurality of second conductive terminals fixed on the insulating core, and a shielding member. The first conductive terminals arranged in one row parallel to a width direction includes two differential signal terminals and two grounding terminals respectively arranged at two opposite outer sides of the differential signal terminals. The shielding member includes a base portion detachably assembled to the housing and a metallic coating layer coated on the base portion. The metallic coating layer contacts the two grounding terminals to establish an electrical connection between the two grounding terminals. The metallic coating layer is arranged at the two opposite outer sides of the differential signal terminals, and the metallic coating layer is configured to shield the differential signal terminals in the width direction.