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Browse Prior Art Database

Grounding and Shielding of Personal Computer Housing Using Contact Springs

IP.com Disclosure Number: IPCOM000106005D
Original Publication Date: 1993-Sep-01
Included in the Prior Art Database: 2005-Mar-20
Document File: 2 page(s) / 66K

Publishing Venue

IBM

Related People

Padron, HJ: AUTHOR [+2]

Abstract

Described is a hardware implementation that provides grounding and shielding of personal computer (PC) housings by using contact springs to enable systems to meet electro-magnetic grounding and shielding requirements.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 72% of the total text.

Grounding and Shielding of Personal Computer Housing Using Contact Springs

      Described is a hardware implementation that provides grounding
and shielding of personal computer (PC) housings by using contact
springs to enable systems to meet electro-magnetic grounding and
shielding requirements.

      Certain PC systems utilize a housing that has a gap between the
base of the housing and its input/output (I/O) panel.  The gap will
allow electronic noise interference to radiate from the unit and must
be covered and provided with a grounding strip.

      Prior art utilized three contact strip arrangements with an
adhesive backing which adhered to the base of the unit and made
contact with the I/O panel.  However, the small contact area
available for the adhesive to adhere caused the contact strip to
require additional assembly steps and occasionally the contact area
would break.  The concept described herein replaces the adhesive type
of strip and provides an improved design that eliminates adhesives
and simplifies assembly by incorporating the three pieces prior art
approach into one contact spring, while still provided the required
grounding and shielding.

      Fig. 1 shows the single piece contact strip 10 that replaces
the prior art adhesive type of design.  Contact strip 10 contains
contact fingers 11 as part of a base section.  Fig. 2a shows a
sectional view of housing 12 which has three slotted openings.  The
openings shown on contact strip...