Grounding Bar for Electrical Connector Shielding
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Solution Overview
Problem
Conventional electrical connectors face challenges in reliably and easily soldering a grounding bar to the corresponding wires and grounding contacts while ensuring electrical connection to the metallic shell.
Innovation Solution
The electrical connector design features upper and lower contacts with signal and grounding contacts alternately arranged, with a grounding bar mechanically and electrically connected to the shielding plate, braiding layer, and shell, allowing for secure soldering and electrical connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the grounding bar is connected to the shielding plate, braiding layer, and grounding contacts, then the electrical connection reliability is improved, but the manufacturing complexity increases
Solution Approach 1:
The grounding bar integrates multiple connection functions into a single component, simultaneously connecting to the shielding plate, braiding layer, and grounding contacts. This merging approach ensures reliable electrical grounding while reducing the number of separate parts and assembly steps compared to using multiple separate connectors.
Solution Approach 2:
The grounding bar serves multiple functions: it provides electrical connection to the shielding plate, connects to the braiding layer for cable shielding, interfaces with grounding contacts, and ensures overall system grounding. This multi-functionality reduces the need for separate dedicated components for each connection point.
2Ease of manufacture
If the grounding bar is easily soldered to wires and grounding contacts, then the ease of manufacture is improved, but the soldering reliability may be compromised
Solution Approach 1:
The grounding bar features locally optimized soldering surfaces with specific geometries and materials at each connection point. The contact surfaces are designed with appropriate surface area, roughness, and material composition to ensure reliable solder adhesion, while maintaining ease of soldering through accessible geometry and proper thermal conductivity.
Solution Approach 2:
The grounding bar is pre-formed with appropriate soldering surfaces, connection geometries, and material properties before assembly. This preliminary preparation ensures that when soldering occurs, the conditions are already optimized for both ease of operation and reliable bonding, eliminating the need for complex preparation steps during assembly.
Data Source
AI summary
An electrical connector includes an insulative housing, a plurality of upper contacts and a plurality of lower contacts disposed in the housing with a metallic shielding plate therebetween, and a metallic shielding shell enclosing the housing. The upper contacts have the signal contacts and the grounding contacts alternatively arranged with each other along a transverse direction. A plurality of wires are located behind the housing. Each of the wires includes an inner conductor mechanically and electrically connected to the corresponding signal contacts, and an outer braiding layer surrounding the inner conductor. A grounding bar is mechanically and electrically connected to all the shielding plate, the braiding layer, the grounding contacts and the shell.