Shielded Electrical Connector Structure for Molding and Grounding
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Solution Overview
Problem
Conventional electrical connectors suffer from insufficient plastic combining force and are prone to short shot issues during injection molding, leading to poor contact performance.
Innovation Solution
The electrical connector design includes a terminal assembly with grounding terminals featuring arc portions and grounding feet, a middle grounding plate with wings, and shielding plates with soldering plates, all integrated within an insulation body to enhance plastic combining force and improve crosstalk interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional electrical connector structure is used for injection molding, then manufacturing process is simple, but plastic combining force is insufficient and short shot occurs
Solution Approach 1:
The connector is divided into multiple independently moldable components including upper housing, lower housing, middle grounding plate, and terminal assemblies. Each component can be molded separately and then assembled, avoiding short shot issues while maintaining structural integrity and plastic combining force.
Solution Approach 2:
Different regions of the connector are designed with locally optimized structures. The middle grounding plate has specific thickness variations and the terminal assemblies have localized features that enhance plastic combining force in critical areas without complicating the overall injection molding process.
2Reliability
If grounding terminals are added for better contact, then contact performance improves, but device complexity increases
Solution Approach 1:
The grounding function is merged into the middle grounding plate that is already present in the connector structure. The grounding terminals are integrated with the terminal assemblies rather than being separate components, reducing overall complexity while ensuring reliable ground contact.
Solution Approach 2:
The middle grounding plate serves multiple functions: it provides mechanical support, establishes electrical ground connection, and facilitates assembly between upper and lower terminal assemblies. This multi-functionality reduces the need for additional separate grounding components.
Data Source
AI summary
An electrical connector includes an insulation body, a terminal assembly, a middle grounding plate and two shielding plates. The terminal assembly is fastened in the insulation body. The terminal assembly has a base portion, and a plurality of terminals fastened in the base portion. The plurality of the terminals are arranged in two rows. The plurality of the terminals arranged in each row have two grounding terminals. Each grounding terminal has a fastening portion. A middle of the fastening portion is bent inward and frontward to form an arc portion. An outer surface of the arc portion extends outward, then is bent outward and extends outward to form a grounding foot. The middle grounding plate is mounted in a middle of the terminal assembly. The two shielding plates are disposed to an upper surface and a lower surface of the insulation body.