Electrical Connector Grounding Member with Multiple Circuits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electrical connectors fail to effectively reduce electrical magnetic interference due to a single grounding trace between the outer shield and the printed circuit board, leading to unreliable signal transmission.
Innovation Solution
The electrical connector features a grounding member with a T-shaped configuration, including a base portion connected to a daughter printed circuit board and a contacting portion extending to the mother printed circuit board, along with a protruding member and tines on the outer shield that form multiple grounding circuits for enhanced electrical contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If only one grounding trace is established between the pins of the outer shield and the printed circuit board, then the structure is simple, but the electrical magnetic interference cannot be effectively reduced
Solution Approach 1:
The grounding structure is segmented into multiple independent grounding circuits. The outer shield includes multiple pins that contact the printed circuit board at different locations, creating separate grounding paths. This segmentation allows each grounding circuit to independently handle electromagnetic interference, effectively reducing overall interference while maintaining structural manageability.
Solution Approach 2:
The grounding member is nested within the outer shield structure, with the grounding member's contacting portion positioned inside the outer shield's cavity. The grounding member contacts both the daughter printed circuit board and the outer shield, creating a nested grounding configuration that provides multiple grounding circuits without significantly increasing external complexity.
2Reliability
If multiple grounding circuits are established, then the electrical magnetic interference is effectively reduced, but the structure becomes more complex
Solution Approach 1:
The grounding structure is divided into multiple independent grounding circuits through separate pins and grounding paths. Each pin creates an independent grounding trace to the printed circuit board, ensuring that signal transmission reliability is improved through redundant grounding paths while keeping each individual circuit simple and manageable.
Solution Approach 2:
The outer shield serves multiple functions: it provides electromagnetic shielding, structural support, and multiple grounding contact points. The pins on the outer shield simultaneously provide both mechanical support and electrical grounding connections, reducing overall device complexity while achieving reliable signal transmission through multiple grounding circuits.
3Object-affected harmful factors
If a grounding member with T-shaped configuration is used, then additional grounding pathways are provided, but the manufacturing complexity increases
Solution Approach 1:
The grounding member is segmented into distinct functional portions: a base portion that contacts the daughter printed circuit board and a contacting portion that extends to contact the outer shield. This segmentation allows for simplified manufacturing of each portion separately while maintaining the overall T-shaped configuration that provides multiple grounding pathways for reducing electromagnetic interference.
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 configuration establishes multiple grounding circuits, effectively reducing electrical magnetic interference and ensuring reliable signal transmission by providing additional pathways for grounding, thereby improving connectivity and noise reduction.
Implementation Method 1
The grounding member includes a base portion connecting to the daughter printed circuit board and a contacting portion extending downwardly from the base portion and connecting with the mother printed circuit board. The outer shield comprises a protruding member extending inwardly for electrically contacting with the grounding member and a plurality of tines extending downwardly therefrom in contact with the mother printed circuit board for grounding.
Data Source
AI summary
An electrical connector (1) mounted on a mother printed circuit board (2) includes an insulative housing (3), a contacting module (4) having a pair of daughter printed circuit boards (42), a grounding member (6) and an outer shield (5) enclosing the insulative housing. The grounding member has a base portion (61) connecting to the daughter printed circuit board and a contacting portion (62) extending downwardly for connecting with the mother printed circuit board. The outer shield has a protruding member (522) for contacting with the grounding member and a number of tines (53) extending downwardly therefrom in contact with the mother printed circuit board for grounding.