Shield Shell Protrusion for Electrical Connector Width Reduction
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Solution Overview
Problem
Electrical connector devices for substrate connection face challenges in miniaturization due to the size increase caused by electromagnetic interference shielding structures, which also lead to deformation and compromised impedance characteristics as the transmission signal becomes multipolarized.
Innovation Solution
The configuration includes shield shells arranged outside the contact members with a protruding substrate connection section and a connection piece that maintains the shield shell away from the signal conductive path, allowing for miniaturization while ensuring effective electromagnetic shielding and impedance matching by adjusting the gap section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a shield shell is arranged outside the contact member in the connector width direction to provide electromagnetic shielding, then the shield function is improved, but the connector width increases
Solution Approach 1:
The substrate connection section protrudes in the connector longitudinal direction (another dimension) rather than extending in the connector width direction. This allows the shield shell to maintain its electromagnetic shielding function while avoiding increasing the connector width, as the protrusion utilizes the longitudinal space instead.
Solution Approach 2:
The substrate connection section is integrated into the shield shell structure itself, with the connection section being part of the shield shell's longitudinal extension. This nesting approach allows the grounding function to be incorporated without adding separate external components that would increase connector width.
2Adaptability or versatility
If the connector is lengthened in the connector width direction to accommodate multipolarized transmission signals, then the adaptability is improved, but the shield shell becomes more prone to deflection and deformation
Solution Approach 1:
The substrate connection section protrudes in the connector longitudinal direction rather than extending in the width direction. This dimensional change allows the shield shell to maintain its structural integrity and resistance to deflection while still accommodating the requirements for multipolarized signal transmission through the longitudinal extension.
3Reliability
If spacing is provided in the connector width direction between the signal conductive path and ground conductive path, then the risk of short circuit is reduced, but the connector width increases
Solution Approach 1:
The substrate connection section protrudes in the connector longitudinal direction to provide the necessary spacing between signal and ground paths. By utilizing the longitudinal dimension for spacing rather than the width direction, the design maintains reliable electrical isolation while avoiding an increase in connector width.
Data Source
AI summary
For miniaturization in a connector width direction in a configuration in which a shield shell is arranged at a position outside a contact member, a configuration is adopted in which when a ground connection section protrudes outward in the connector width direction from a first shield shell arranged outside the connector width direction of a first contact member in a first connector, an inner end surface of the ground connection section at the time of fitting between both the connectors is arranged within a range of a plate width of a second shield shell, to arrange the first shield shell inside the connector width direction of the ground connection section and arrange a second shield shell arranged outside the connector width direction of the first shield shell more inside the connector than a conventional example at the time of fitting both the connectors.