Electronic Connector Shielding Plate Grounding
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Solution Overview
Problem
Existing electrical connectors face challenges in effectively grounding high-frequency signals, leading to increased electromagnetic interference due to smaller terminal pitches and inadequate shielding, which hampers efficient data transmission in modern electronic devices.
Innovation Solution
The electrical connector assembly incorporates a shield housing with an insulated body, metal terminals, and a shielding plate with elastic arms that form a grounding structure, allowing for effective discharge of electromagnetic interference through a grounding path when the plug connector is inserted into the receptacle connector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the pitch between conductive terminals is reduced to shrink connector size, then the quantity of conductive terminals per unit area is increased, but electromagnetic interference inside the connector becomes greater
Solution Approach 1:
A shielding plate is introduced as an intermediary component between adjacent conductive terminals. The shielding plate includes grounding fingers that extend between terminal pairs and a grounding leg that connects to the grounding circuit, creating a physical barrier that blocks electromagnetic interference while allowing the reduced pitch configuration to maintain
Solution Approach 2:
The shielding plate provides localized electromagnetic shielding between specific terminal pairs rather than requiring a complete enclosure. The grounding fingers are strategically positioned between adjacent differential signal terminal pairs, providing targeted protection where interference occurs most while maintaining overall connector compactness
2Reliability
If traditional metal housing grounding is used, then grounding is provided, but the plug connector grounding and receptacle connector grounding cannot connect when mated
Solution Approach 1:
The shielding plate incorporates elastic arms with bending formations that provide flexible grounding connection. When the plug and receptacle connectors are mated, the elastic arms can deform to accommodate alignment tolerances and ensure reliable electrical contact between grounding terminals, transforming a rigid grounding structure into a dynamically adaptive one
Solution Approach 2:
The shielding plate with grounding leg is pre-installed in the receptacle connector before mating occurs. The grounding structure is positioned and configured in advance to ensure that when the plug connector is inserted, the grounding path is automatically established without requiring additional adjustment or alignment steps
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
This design significantly reduces electromagnetic interference and noise by providing a reliable grounding path, ensuring stable and efficient high-frequency signal transmission.
Implementation Method 1
The shielding plate has at least one elastic arm with a bending formation and is disposed between two rows of the metal terminals
Data Source
AI summary
The present disclosure provides a main connector including a shield housing, an insulated body, a plurality of metal terminals, and a shielding plate. The shield housing has an opening for a butt joint connector to insert. The insulated body is encapsulated inside the shield housing. Each of the metal terminals has a contact portion and a fixing portion. The contact portion is arranged in two rows inside the opening of the shield housing, and the fixing portion is fixed to the insulated body. The shielding plate has at least one elastic arm with bending formation and is disposed between two rows of the metal terminals.