Electrical Connector Ground Terminal Abutment
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Solution Overview
Problem
Conventional electrical connectors with ground terminals suffer from poor grounding and shielding effects due to inadequate soldering or loosening of the middle shielding sheet, leading to potential electrical disconnection.
Innovation Solution
An electrical connector design featuring ground terminals with extending portions that directly abut a metal shell, ensuring robust contact and preventing disconnection, along with an elastic buckling mechanism for secure fixation and enhanced shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a middle shielding sheet is used for grounding, then the shielding effect is improved, but the grounding reliability deteriorates due to poor soldering or loosening
Solution Approach 1:
The patent introduces an extending portion as an intermediary element between the ground terminal and the metal shell. This extending portion directly contacts the metal shell to establish a reliable grounding path, while the middle shielding sheet maintains its shielding function. The intermediary structure allows the grounding function to be independent of the middle shielding sheet's soldering quality, thus resolving the contradiction between shielding effect and grounding reliability.
2Object-affected harmful factors
If ground terminals contact the middle shielding sheet, then the shielding effect is enhanced, but the contact stability deteriorates
Solution Approach 1:
The patent segments the grounding function from the shielding function by introducing a separate extending portion. The ground terminal's extending portion directly contacts the metal shell for stable grounding, while the middle shielding sheet performs shielding independently. This segmentation allows each component to perform its specific function without relying on the stability of connections between them, resolving the contradiction between shielding enhancement and contact stability.
3Reliability
If the middle shielding sheet is soldered to the circuit board, then the grounding path is established, but the connection reliability deteriorates due to loosening or poor soldering
Solution Approach 1:
The extending portion acts as an intermediary that creates a direct mechanical and electrical connection between the ground terminal and the metal shell, bypassing the need for reliable soldering of the middle shielding sheet. This intermediary structure ensures grounding path reliability through direct contact rather than dependent on soldering connection stability.
Data Source
AI summary
An electrical connector used for mating with a mating connector includes: an insulating body, having a base and a tongue extending from the base; a metal shell, wrapping the insulating body and forming a mating cavity with the tongue; two rows of terminals, fixedly disposed on the insulating body and exposed on the tongue, one of the two rows of terminals having at least one ground terminal; and a middle shielding sheet, disposed on the insulating body and located between the two rows of terminals. Each of the at least one ground terminal has an extending portion, and the extending portion extends away from the middle shielding sheet and abuts the metal shell.