Shielded Connector Multi-Point Shell Connection
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Solution Overview
Problem
Existing connector devices with shield structures have insufficient noise shielding performance due to limited points of contact between shield shells, which affects the effectiveness of noise removal.
Innovation Solution
The connector device features first and second shield shells connected at three or more positions, with connecting portions arranged in a balanced manner to enhance shielding performance, including low and high connecting portions with bolt holes for secure fixation, ensuring reliable contact and improved noise shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If shield shells are connected at only two points, then the structure is simple, but the shielding performance is insufficient
Solution Approach 1:
The connection between shield shells is segmented into multiple discrete connecting portions (three or more) distributed at different positions, including both low connecting portions near the case outer surface and high connecting portions more distant from it. This segmentation transforms a single-point or two-point connection into a distributed multi-point connection system, improving shielding performance by creating multiple contact paths while maintaining manageable structural complexity through modular arrangement.
2Reliability
If connecting portions are arranged in a well-balanced manner at three or more positions, then shielding performance improves, but manufacturing complexity increases
Solution Approach 1:
Different connecting portions are assigned different local characteristics: low connecting portions are positioned near the outer surface of the case for stable mechanical support and electrical contact, while high connecting portions are positioned more distant from the outer surface to extend the shielding effect. This local differentiation optimizes the overall shielding performance by creating a vertically distributed connection system that addresses different functional requirements at different locations, making the manufacturing process more systematic and manageable.
Solution Approach 2:
The connecting portions are arranged in both the connecting direction of the connector and in a direction orthogonal to it, creating a two-dimensional distribution pattern. This spatial arrangement ensures comprehensive shielding coverage by distributing contact points across multiple dimensions, improving the robustness of the shielding effect while providing a structured manufacturing approach that can be systematically implemented.
3Reliability
If bolt tightening is used to hold the contact state reliably, then connection reliability improves, but assembly time increases
Solution Approach 1:
Multiple connecting portions (both low and high connecting portions) are combined into a single integrated connection system that uses bolt tightening mechanisms. By merging the function of multiple discrete connections into a unified bolted assembly system, the patent achieves reliable contact state stability across all connecting portions while reducing assembly time compared to using separate fastening methods for each connection point.
Data Source
AI summary
A connector device (10) has a connector (20) to be mounted on a metal case (11) that accommodates a device therein and is covered by a first shield shell (50) and a second shield shell (60). Connecting portions for connecting the first and second shield shells (50, 60) are provided at least at three positions and these connecting portions are arranged at positions displaced in a connecting direction of the connector (20) and a mating connector (40) and a direction orthogonal to the connecting direction. The connecting positions of the first and second shield shells (50, 60) are well-balanced to provide a good a shielding performance.