Electrical connection device

Details Electrical connection device Electrical connection device

1996-12-05

1999-03-23

Abrams, Neil

Electrical connectors

Including or for use with coaxial cable

Having means for interconnecting outer conductors of three...

439608, 439246, 439 95, H01R 905

Patent

active

058851038

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

The present invention is intended for application in an electric plug-in assembly, and then particularly, but not exclusively, in an electric plug-in assembly which includes electrical connection means adapted for coaction with a plurality of coaxial cables, and is even more concerned with a metallic electrical connection means which is included in the cable-related part of the plug-in assembly and which can be connected to an ground potential or ground reference.
It is fundamental to the invention that the electric plug-in assembly is comprised of two complementary parts wherein at least one metallic casing part or said one assembly part can be connected externally or internally to ground potential and wherein at least one of said assembly parts is divided into several parts, normally two parts.
The two complementary parts of the plug-in assembly are mutually coordinated so that they can be brought to a mutually coacting position for electrical and mechanical coaction between coaxial-cable adapted electrical connection means placed in respective assembly parts and carrying a base member which can be embraced by the casing parts, or to a non-coacting position in which there is no electrical and mechanical coaction between coaxial-cable adapted electrical connection means mounted in said complementary parts.
Electric plug-in assemblies of the kind to which the present invention refers thus comprise two complementary parts, and the invention finds particular application when one of said parts is a circuit-board associated part and the other part is a cable-related part, wherein each of said parts includes a metallic casing which is adapted to fully embrace an electrically insulating base member into which there is inserted a plurality of electrically conductive coaxial contact devices. The metallic casing for the cable-related part may advantageously comprise two parts.
In other respects, the parts of the plug-in assembly are constructed so that at least one of said parts will embrace a base member which is made of an electrically insulating material and intended for one connecting device. The base member includes through-penetrating holes or channels which are adapted to hold or to coact with a first subpart of a sleeve-like coaxial-cable adapted connecting device, wherein said first subpart is intended to coact with a first subpart of a complementary connecting device and with a second subpart which is adapted for coaction with a stripped end of the coaxial cable, said cable end being stripped so as to expose the central conductor of the cable and also to expose an embracing screening conductor or screening stocking.
This coaction is achieved, among other things, by virtue of turning the screening conductor around a support sleeve fitted over said second subpart, wherein the screening conductor is clamped firmly between the second subpart and the inner surface of an outer clamping sleeve provided with electrical connection means, while using the support sleeve.
The present invention can be applied to particular advantage in grounded circuit board magazines, in which an external conductor and/or conductors is/are caused to coact with circuit-board related circuit, conductors and the like via electric connecting devices.
Magazines of the type intended here are adapted to handle in electronic circuits information-carrying signals whose current and/or voltage pulses can have a frequency or bit rate that lies within the Gb/s range.
Electronic systems of the kind intended are encumbered with the drawbacks that high frequency electromagnetic signals "leak" out as radio waves and the circuits become sensitive to such electromagnetic disturbance fields and therewith lose their ability to transmit the information-carrying signals correctly.
The invention is therefore intended from certain aspects to provide a system in which all disturbing signal routes are carefully screened and related to ground potential.
The invention is also intended to overcome EMC-type disturbance fields (Electro Magnetic Com

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