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Browse Prior Art Database

Connector Shield/Bracket to Provide Electromagnetic Compatibility

IP.com Disclosure Number: IPCOM000040359D
Original Publication Date: 1987-Nov-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Shaw, RW: AUTHOR [+2]

Abstract

A technique is described whereby a connector shield/bracket provides electromagnetic compatibility (EMC) so that electrical radiation, at cable termination positions, will be minimized. The shield is unique in that it incorporates fingers which are spaced in accordance with frequencies generated by electrical circuits adjacent to the shield. The shield also provides a strain relief function and a safety grounding path. The shield/bracket 10, as shown in the figure, is a stamped metal unit installed between connectors 11, mounted on planar boards 12, and external cable connectors which are plugged into connectors 11. The prime purpose of shield/bracket 10 is to act as a shield to minimize electrical radiation which may adversely be generated by electrical circuitry within an electrical housing.

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Connector Shield/Bracket to Provide Electromagnetic Compatibility

A technique is described whereby a connector shield/bracket provides electromagnetic compatibility (EMC) so that electrical radiation, at cable termination positions, will be minimized. The shield is unique in that it incorporates fingers which are spaced in accordance with frequencies generated by electrical circuits adjacent to the shield. The shield also provides a strain relief function and a safety grounding path. The shield/bracket 10, as shown in the figure, is a stamped metal unit installed between connectors 11, mounted on planar boards 12, and external cable connectors which are plugged into connectors 11. The prime purpose of shield/bracket 10 is to act as a shield to minimize electrical radiation which may adversely be generated by electrical circuitry within an electrical housing. Shield 10 also provides strain relief and a safety ground for cable connectors connected to connectors 11. To minimize the amount of electrical radiation which could escape from the internal circuitry of an electrical housing, connector cutouts 13 are designed so as to minimize the spacing about the perimeter opening surrounding the connectors. Fingers 14, at both the top and bottom of shield 10, are evenly spaced and act as small spring projections, whereby each finger 14 makes contact with the plated surface of the mounting housing. In order to obtain minimum radiation, the spacing between each of the finge...