Shielded Plug Connector Assembly for High-Frequency PCB Contact
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional connector assemblies lack effective electromagnetic wave shielding performance, particularly at high frequencies, and suffer from electromagnetic interference between cables and pins, especially when multiple cables are connected to a circuit board with a single connector.
Innovation Solution
A connector assembly featuring a receptacle with a dielectric and shield can configuration, where the pin of the plug connector makes direct elastic contact with the circuit board, and is surrounded by a dielectric and shielded by both a shield can and a plug shell, with a bent pin structure for enhanced resiliency and reduced component complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional connector assemblies are used to connect multiple cables to a circuit board, then the connection function is achieved, but electromagnetic wave shielding performance deteriorates and electromagnetic interference increases
Solution Approach 1:
The patent implements nested shielding structures where an inner shield can is placed inside an outer shield can, with the inner shield can surrounding the pins and the outer shield can surrounding the entire plug connector assembly. This nested configuration creates multiple layers of electromagnetic shielding without requiring a completely separate complex assembly, effectively blocking electromagnetic waves at multiple levels while maintaining structural integration.
Solution Approach 2:
The patent divides the shielding function into multiple independent components: the inner shield can, the outer shield can, the dielectric material, and the plug shell. Each component performs a specific shielding function at different levels, allowing the electromagnetic shielding performance to be improved through the combined effect of these segmented elements rather than relying on a single complex structure.
2Object-affected harmful factors
If shield can and dielectric components are added to improve electromagnetic shielding, then shielding performance is improved, but the number of components and assembly complexity increases
Solution Approach 1:
The patent combines multiple functions into integrated components. The dielectric material serves both as an insulating barrier between pins and as a structural element that holds the inner shield can in position. The outer shield can simultaneously provides electromagnetic shielding and structural protection for the entire plug connector assembly. This merging of functions reduces the need for additional separate components while maintaining effective shielding performance.
3Reliability
If direct elastic contact is used between pins and circuit board, then contact reliability is improved, but pin structure complexity increases
Solution Approach 1:
The patent employs a dynamic pin structure with elastic properties that can deform under contact pressure. The pin includes a contact portion with elastic resiliency that allows it to flex and maintain reliable electrical contact with the circuit board contact point. This dynamic elastic behavior enables the pin to adapt to manufacturing tolerances and assembly variations, ensuring consistent contact reliability without requiring complex adjustment mechanisms.
4Force
If bent pin structure with elastic portion is implemented, then contact force and resiliency are improved, but manufacturing complexity increases
Solution Approach 1:
The patent utilizes a bent pin structure with curved elastic portions instead of straight rigid pins. The elastic portion is formed with a specific curved geometry that provides the necessary resiliency and contact force. This curved configuration allows the pin to flex elastically during insertion and maintain reliable contact, while the curvature can be achieved through standard metal forming processes, balancing manufacturing feasibility with performance requirements.
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 provides improved electromagnetic wave shielding, minimizes signal interference between pins, and simplifies the connector design while ensuring reliable contact with the circuit board, enhancing assembly efficiency and contact force.
Implementation Method 1
the pin is arranged in the second hole such that the contact portion protrudes farther than the outer surface of the dielectric, and the dielectric is positioned in the first hole so that the contact portion is directly and elastically in contact with a contact point of the substrate
Implementation Method 2
conventional connector assemblies do not exhibit electromagnetic wave shielding performance as required at high frequencies, and are vulnerable to electromagnetic wave interference between cables and pins
Data Source
AI summary
The connector assembly, according to the present invention, comprises: a receptacle arranged on a substrate; and a plug coupled to the receptacle, wherein the plug includes: a pin having one side electrically connected to a cable and having a contact portion arranged on the other side; a dielectric arranged on the outside of the pin; a shield can arranged on the outside of the dielectric; and a plug shell arranged on the outside of the shield can, wherein the receptacle comprises a first hole, the dielectric comprises a second hole in which the pin is arranged, the pin is arranged in the second hole such that the contact portion protrudes farther than the outer surface of the dielectric, and the dielectric is positioned in the first hole so that the contact portion is directly and elastically in contact with a contact point of the substrate.