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Browse Prior Art Database

Applied Card Edge Connector

IP.com Disclosure Number: IPCOM000107502D
Original Publication Date: 1992-Mar-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 3 page(s) / 106K

Publishing Venue

IBM

Related People

Bryce, DM: AUTHOR [+6]

Abstract

Disclosed is an applied card edge connector, which provides an alternative to gold-plated edge tabs and to previous applied card edge technologies. The connector consists of two parts, first, two paired contact/carrier strips and second, an insulating housing.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Applied Card Edge Connector

       Disclosed is an applied card edge connector, which
provides an alternative to gold-plated edge tabs and to previous
applied card edge technologies.  The connector consists of two parts,
first, two paired contact/carrier strips and second, an insulating
housing.

      The contact/carrier strips consist of a pair of parallel
carrier strips (1a and 1b in Step 1 above) with the contact/solder
pins (1a and 1b) carried perpendicular between them.  This
arrangement serves to accurately align, separate, and protect the
contact/solder pins.  The carrier strip on the solder pin end (1a) of
the contact/solder pin is bent up at an angle and away from the card
engaging face of the solder pin to provide a lead-in for ease of
assembly. The contact/ carrier strip is made from some conductive
metal also having good spring properties, typically a
beryllium-copper alloy. The contact metallurgy (2a) is positioned on
the contact end - either by selective plating or by roll bonding.
Solder is applied to the card facing side of the solder pin end of
the contact (2b) by a roll bonding and skiving process.

      A loop (3) in the contact/solder pins, between contact and the
point of solder contact, is also incorporated in the design. This
loop serves as a compensating spring structure which allows opposing
solder pins to move forward or away from each other and so compensate
for variations in card thickness, establishes the angle of intercept
of the planes established by the engaging surfaces o...