Electrical Connector Shielding Cavity for EMI and Signal Integrity
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Solution Overview
Problem
Existing connector assemblies lack sufficient shielding effectiveness to meet increasing electromagnetic interference and signal integrity requirements.
Innovation Solution
The first electrical connector features a metal shielding sleeve with a shielding cavity enclosed by multiple side walls, and the connector assembly includes a second electrical connector with a metal shield surrounding member that inserts into this cavity, enhancing shielding when mated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional shielding structures with separate metal shields and ground terminals are used, then the connector can provide basic electromagnetic shielding, but the shielding effectiveness is insufficient to meet increasing signal integrity requirements
Solution Approach 1:
The patent implements a nested shielding structure where the metal shielding sleeve is positioned inside the insulating frame, which itself is housed within the connector housing. The signal terminal penetrates through multiple layers (housing, insulating frame, shielding sleeve) to establish electrical contact, creating concentric shielding layers that progressively block electromagnetic interference while maintaining signal integrity
Solution Approach 2:
The patent applies different material properties and shielding characteristics to different regions of the connector. The metal shielding sleeve provides localized electromagnetic shielding around the signal terminal, while the insulating frame provides structural support and additional isolation. Each component is optimized for its specific function to achieve overall superior shielding effectiveness
2Object-affected harmful factors
If multiple separate shielding components (metal shields, ground terminals, shielding sleeves) are used, then the connector can provide distributed shielding coverage, but the device complexity increases
Solution Approach 1:
The patent combines multiple shielding functions into an integrated structure. The metal shielding sleeve serves both as a structural component and as the primary electromagnetic shielding element. The insulating frame integrates structural support with additional shielding functionality. This merging reduces the number of separate components while maintaining comprehensive shielding coverage
Solution Approach 2:
The connector components are designed to serve multiple functions simultaneously. The metal shielding sleeve provides both mechanical support and electromagnetic shielding. The insulating frame provides structural integrity, electrical isolation, and additional shielding. This multi-functionality reduces overall device complexity by eliminating dedicated components for each function
Data Source
AI summary
A first electrical connector includes a first housing and a first mating module. The first mating module includes a number of first cable modules and a first fixing block. Each first cable module includes a first terminal module, a first cable and a metal shielding sleeve. The first terminal module includes a first conductive terminal, and the first conductive terminal includes a first contact portion. The metal shielding sleeve includes a first side wall, a second side wall, a third side wall, a fourth side wall and a shielding cavity. The first contact portion at least partially protrudes into the shielding cavity, thereby improving the shielding effect. A connector assembly having the first electrical connector is also disclosed.