Stacked Shielding Cage for High-Speed Electrical Connectors
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Solution Overview
Problem
Existing electrical connectors face challenges in improving signal transmission quality, particularly in terms of shielding effectiveness.
Innovation Solution
The electrical connector assembly incorporates a conductive housing and a shielding cage with stacked receiving cavities to house multiple connectors, enhancing shielding and signal transmission quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional insulating body and metal shell structure is used, then manufacturing simplicity is maintained, but shielding effectiveness is insufficient for high-speed signal transmission
Solution Approach 1:
The patent implements a nested shielding structure where an inner conductive housing is placed inside an outer conductive housing, with the terminal module positioned between them. This nested arrangement creates multiple shielding layers that significantly improve electromagnetic shielding effectiveness without requiring complete structural redesign, thus resolving the contradiction between shielding performance and structural complexity.
Solution Approach 2:
The shielding structure is segmented into multiple independent conductive housings (inner and outer shells) rather than using a single monolithic structure. This segmentation allows each housing to contribute to the overall shielding effect while maintaining manufacturing feasibility and enabling modular assembly, thereby improving shielding effectiveness without excessive complexity.
2Object-affected harmful factors
If conductive housing with terminal module is used, then shielding effect is improved, but signal crosstalk between adjacent connectors increases
Solution Approach 1:
The nested dual-housing structure creates an enclosed environment for the terminal module, with the inner conductive housing directly surrounding the terminals and the outer housing providing additional shielding. This nested configuration effectively contains electromagnetic fields and reduces signal crosstalk between adjacent connectors while maintaining signal integrity, thus resolving the contradiction between reducing crosstalk and ensuring transmission quality.
3Volume of moving object
If stacked receiving cavities are used to house multiple connectors, then space utilization is improved, but manufacturing complexity increases
Solution Approach 1:
The connector assembly is segmented into multiple independent receiving cavities stacked vertically, with each cavity containing its own terminal module and conductive housing. This segmentation allows for modular manufacturing where each cavity can be produced and tested independently, then assembled into the final stacked configuration, improving space utilization while managing manufacturing complexity through modularity.
Solution Approach 2:
Multiple receiving cavities are combined into a single integrated connector assembly, sharing common structural elements and mounting interfaces. This merging approach achieves high space utilization by stacking connectors vertically while reducing overall assembly complexity through standardized interfaces and common support structures, resolving the contradiction between compact packaging and ease of manufacture.
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
The solution improves signal transmission quality by providing enhanced shielding and reducing signal crosstalk, suitable for high-speed data transmission.
Implementation Method 1
a shielding cage, the shielding cage being configured to be mounted on the circuit board; the shielding cage defining a first receiving cavity and a second receiving cavity which are stacked
Data Source
AI summary
A connector assembly includes a first electrical connector, a second electrical connector and a shielding cage. The first electrical connector includes a first conductive housing, a first terminal module and a number of first cables. The second electrical connector includes a third conductive housing and a number of third conductive terminals. The shielding cage includes a first receiving cavity and a second receiving cavity. The first receiving cavity includes a first installation cavity for receiving the first electrical connector and a first mating cavity for receiving a first mating connector. The second receiving cavity includes a second installation cavity for receiving the second electrical connector and a second mating cavity for receiving a second mating connector.