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Browse Prior Art Database

Card Alignment And Location System Using High I/O Count Connectors

IP.com Disclosure Number: IPCOM000100515D
Original Publication Date: 1990-May-01
Included in the Prior Art Database: 2005-Mar-15
Document File: 4 page(s) / 136K

Publishing Venue

IBM

Related People

Fritz, RA: AUTHOR [+2]

Abstract

Card alignment and location systems using high I/O count connectors allow a means of aligning and accurately locating card (cassette) assemblies during "Blind Plugging", with a minimum of tight tolerance piece parts, therefore, with minimum cost for the parts and assemblies.

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Card Alignment And Location System Using High I/O Count Connectors

       Card alignment and location systems using high I/O count
connectors allow a means of aligning and accurately locating card
(cassette) assemblies during "Blind Plugging", with a minimum of
tight tolerance piece parts, therefore, with minimum cost for the
parts and assemblies.

      Fig. 1 shows the basic components of the planar/stiffener
assembly.  The front stiffener is a window frame of die cast aluminum
with locating bumps for the planar and rear stiffener.  The planar is
a large printed wiring board (approximately 15x24 inches) and is
loosely fitted to the front stiffener.  The notches in the planar are
loose fitting and are for orientation only.  The rear stiffener also
is die cast and fits the front stiffener somewhat more closely than
the planar but is definitely not a tight fit.

      Fig. 2 illustrates one corner of the planar/stiffener assembly
which is typical of the four corners of two other center patterns
along the upper and lower horizontal extremities.  Snap fastener "A"
passes through the large clearance hole "B" in the planar and snaps
through hole "C" in the rear stiffener.  Dimension "D" has sufficient
length to allow the planar to loosely float between the stiffeners
while maintaining an integrity as an assembly.

      Holes "E" in all three pieces are oversized clearance holes.
Hole "F" in the planar is a precision drilled hole related closely to
the drilling pattern for th...