Grounding Terminal EMI Shielding via Segmented Wing Design
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Solution Overview
Problem
Conventional electrical connectors with L-shaped grounding terminals fail to effectively transmit electromagnetic interference to grounding ends, leaving zones affected by electromagnetic interference, and existing solutions like Taiwanese Patent No. M307240's U-shaped design are not compatible with non-U-shaped terminals.
Innovation Solution
A grounding terminal with a main body, coupling portion, and wing portion that can be engaged with both L-shaped and U-shaped openings, ensuring electrical connection and providing electromagnetic interference shielding by surrounding signal terminals and connecting to grounding pins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If L-shaped grounding terminals are used in conventional electrical connectors, then the device complexity is reduced and ease of manufacture is improved, but electromagnetic interference shielding effectiveness deteriorates and zones affected by EMI remain
Solution Approach 1:
The grounding terminal is divided into multiple functional segments: a main body portion for electrical connection, coupling portions extending from opposite sides for engagement with opening walls, and wing portions for additional shielding. This segmentation allows each part to perform its specific function optimally while maintaining overall EMI shielding effectiveness without compromising manufacturability.
2Object-affected harmful factors
If U-shaped grounding terminals are used to improve EMI shielding, then electromagnetic interference shielding effectiveness is improved, but adaptability deteriorates as non-U-shaped terminals cannot be engaged
Solution Approach 1:
The grounding terminal design incorporates coupling portions that can engage with both L-shaped and U-shaped opening configurations. The main body and wing portions provide universal EMI shielding functionality, while the coupling portions adapt to different opening geometries. This multi-functional design enables compatibility across various connector types without sacrificing shielding performance.
3Object-affected harmful factors
If grounding terminals are designed to surround signal terminals for EMI shielding, then electromagnetic interference shielding effectiveness is improved, but device complexity increases
Solution Approach 1:
The grounding terminal merges multiple functions into a single integrated component: the main body provides electrical connection to the grounding pin, the coupling portions engage with the opening walls to provide structural support and additional shielding, and the wing portions extend to surround and protect the signal terminals. This merging eliminates the need for separate shielding components while achieving comprehensive EMI protection.
Data Source
AI summary
A grounding terminal for electrical connector, which can reduce noise, includes a main body, a wing portion and a coupling portion. A connector insulator includes signal terminal openings and L-shaped or U-shaped grounding terminal openings. The wing portion and the coupling portion are extended from both lower side edges of the main body, respectively. Thus, the grounding terminal can be engaged with the L-shaped or U-shaped grounding terminal opening. Although the grounding terminal is not in U shape, the grounding terminal and the grounding terminal opening surround the signal terminals. Therefore, the grounding terminal still provides an EMI shielding similar to that of a conventional U-shaped grounding terminal.