Coaxial Connector Spring Contacts for EMI Shielding Gaps
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Solution Overview
Problem
Existing connectors face challenges in maintaining a small gap between the outer conductor and the mating connection conductor, which affects electromagnetic shielding properties.
Innovation Solution
A connector design featuring a terminal module with a tubular outer conductor and spring connecting portions arranged along the circumferential direction, each extending from an opening and resiliently pressed against the outer conductor, supported by an intervening member, to minimize gaps and enhance electromagnetic shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single shim is used to connect the outer conductor and mating connection conductor, then the structure is simple, but gaps are formed around the spring reducing electromagnetic shielding property
Solution Approach 1:
The single shim is divided into multiple spring connecting portions (first, second, third, and fourth spring connecting portions) arranged circumferentially. This segmentation allows each portion to independently contact the outer conductor, reducing gaps between the mating connection conductor and outer conductor while maintaining structural feasibility.
2Object-affected harmful factors
If multiple spring connecting portions are used to reduce gaps, then electromagnetic shielding property is improved, but device complexity increases
Solution Approach 1:
Multiple spring connecting portions are merged into a single shim component rather than being separate parts. This integration maintains relative structural simplicity while achieving the electromagnetic shielding benefit of multiple contact points around the circumference.
3Reliability
If spring connecting portions are made resilient to press against the outer conductor, then reliable electrical connection is achieved, but manufacturing precision requirements increase
Solution Approach 1:
The shim utilizes elastic deformation parameters to create resilient spring connecting portions. By changing the physical state from rigid to elastic, the connection becomes self-adjusting and tolerant of manufacturing variations, reducing precision requirements while ensuring reliable electrical contact.
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 design ensures reliable electrical connection and improved electromagnetic shielding by reducing gaps between the outer conductor and mating connection conductor, while allowing for flexible arrangement and easy formation of spring connecting portions with desired springiness.
Implementation Method 1
each of the plurality of spring connecting portions extending from an edge of the opening toward the outer conductor and being resiliently pressed against an outer peripheral part of the outer conductor
Data Source
AI summary
A connector includes a terminal module including an inner conductor, an insulator surrounding the inner conductor and a tubular outer conductor surrounding the insulator, a mating connection conductor including an opening extending around a center axis of the outer conductor, and a plurality of spring connecting portions arranged side by side along a circumferential direction of the outer conductor on an outer peripheral side of the outer conductor. The plurality of spring connecting portions are arranged side by side along the circumferential direction of the outer conductor. Each of the plurality of spring connecting portions extends from an edge of the opening toward the outer conductor and is resiliently pressed against an outer peripheral part of the outer conductor when viewed along the center axis of the outer conductor.