Browse Prior Art Database

Flex Attachment to a Printed Circuit Card

IP.com Disclosure Number: IPCOM000120308D
Original Publication Date: 1991-Apr-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 2 page(s) / 78K

Publishing Venue

IBM

Related People

Savage, CP: AUTHOR [+2]

Abstract

A method is described of attaching a flex cable to a printed circuit (PC) card using zero-insertion-force methodology. Standard zero-insertion-force connectors for flex cables exist but they are limited to approximately 40 I/O due to difficulties presented by clamp design. A simple embodiment of the disclosed method using a Single Inline Memory Module (SIMM) connector is described that creates an inexpensive zero- insert and removal force connector for attachment of a flex cable to a PC card.

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

Flex Attachment to a Printed Circuit Card

      A method is described of attaching a flex cable to a
printed circuit (PC) card using zero-insertion-force methodology.
Standard zero-insertion-force connectors for flex cables exist but
they are limited to approximately 40 I/O due to difficulties
presented by clamp design.  A simple embodiment of the disclosed
method using a Single Inline Memory Module (SIMM) connector is
described that creates an inexpensive zero- insert and removal force
connector for attachment of a flex cable to a PC card.

      When flex cables are used to interconnect electronic functions,
where one function is housed on a card or on the cable, as in the
case of a smart cable, and the other is housed on a second card, some
means must be provided to attach the cable to the card.
Additionally, the ability to remove the cable or cards for
maintenance or repair is a requirement.  The connection and the
disconnection of the cable should occur with the minimum of force to
avoid possible damage to the components.  Finally, the connector
system should be of minimum cost.

      One method of attachment of the cable to the card is by
permanent connection, such as by soldering the pads of the cable to
the appropriate pads on the card.  Additionally, solder may be
replaced by conductive adhesives.  This method makes a permanent
connection and does not allow easy maintenance.  Temporary connection
is possible by providing a female half of a connector on the hard
card and a stiffened edge on the flex cable.  This is inexpensive if
a standard personal computer (microchannel) connector is used, but it
is not a zero-insertion-force method;  extraction of the flex cable
is difficult.  An alternative solution use, the fe...