Electrical Connector Shielding and Terminal Assembly
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Solution Overview
Problem
Existing electrical connectors face issues with electromagnetic radiation leakage during high-speed signal transmission, leading to crosstalk and poor signal quality, and terminal assembly challenges due to small tongue size and increased terminals, resulting in potential tilting and instability.
Innovation Solution
The design incorporates upper and lower grounding sheets to cover the base of an insulating body, enhancing shielding and using a middle grounding sheet with specific structural features to prevent displacement and improve assembly stability, along with an outer metal shell for comprehensive shielding and secure terminal placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If terminals are simultaneously assembled to both surfaces of the tongue, then the number of terminals increases, but the tongue size becomes smaller making operations inconvenient and terminals may tilt upward
Solution Approach 1:
The patent divides the terminal assembly into separate operations for the first surface and second surface. The first terminal group is assembled to the first surface, then the tongue is flipped to assemble the second terminal group to the second surface. This segmentation makes the assembly process more manageable and reduces the risk of terminal tilting by providing clear assembly sequences and positioning references for each surface.
2Object-affected harmful factors
If shielding member is disposed at the tongue between the first and second surfaces, then shielding is provided, but electromagnetic radiation leaks backward causing crosstalk during high-speed signal transmission
Solution Approach 1:
The patent extends the shielding protection from the tongue region into the base region by adding a fourth shielding member that covers the rearward-facing surface of the base. This dimensional extension of the shielding structure prevents electromagnetic radiation from leaking backward through the base, complementing the existing shielding at the tongue and fully enclosing the terminal groups to eliminate crosstalk during high-speed signal transmission.
Data Source
AI summary
An electrical connector is provided for a mating connector to be inserted thereto. The electrical connector includes an insulating body having a tongue, and multiple terminals. A middle grounding sheet is located between the terminals in upper and lower rows, and has at least one first through hole. Each of left and right sides of the middle grounding sheet has a latch slot and a notch. The insulating body has a first insulating post entering the first through hole and a second insulating post entering the notch. A dimension of the second insulating post is larger than a dimension of the first insulating post. A metal shell frames outside the insulating body to form an insertion space. A first clearance between a first protruding portion and a shielding casing of the mating connector is more than or equal to 0.001 mm and less than or equal to 0.0449 mm.