Browse Prior Art Database

Retainer for Electro-magnetic Compatibility Grounding

IP.com Disclosure Number: IPCOM000110298D
Original Publication Date: 1992-Nov-01
Included in the Prior Art Database: 2005-Mar-25
Document File: 3 page(s) / 120K

Publishing Venue

IBM

Related People

Barina, RM: AUTHOR [+4]

Abstract

Described is a hardware implementation to provide a retainer that insures electro-magnetic compatibility (EMC) grounding of sheet metal parts to a frame. The design shows the use of the retainer as used in personal computer (PC) frames. However, the concept can be adapted to other structures requiring EMC grounding.

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Retainer for Electro-magnetic Compatibility Grounding

       Described is a hardware implementation to provide a
retainer that insures electro-magnetic compatibility (EMC) grounding
of sheet metal parts to a frame.  The design shows the use of the
retainer as used in personal computer (PC) frames.  However, the
concept can be adapted to other structures requiring EMC grounding.

      The retainer is designed with three sides which overlap for
grounding onto a frame structure.  The bottom of the retainer is
designed to pivot about the bottom of the frame so as to make ground
contact at several places.  Three spring fingers are designed to be
mounted to the frame in strategic locations so as to insure direct
frame contact and to insure that a sufficient force is applied to the
retainer for making ground contact at several locations.

      Fig. 1 is an isometric view of the retainer assembly positioned
and secured to the frame.  Three overlap sheet metal flanges 1 are
grounded to the frame.  Fig. 2 is an isometric view of the angular
sheet metal used in the retainer design.  Angular sheet metal 2,
which is part of the frame, is shown in relation to the three spring
fingers 3.  Fig. 3 is an isometric view showing the bottom portion of
the frame viewing the angular sheet metal feature locations and
ground contact areas 4.