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Multiple Screw Actuator for Direct Plug Connector

IP.com Disclosure Number: IPCOM000122503D
Original Publication Date: 1991-Dec-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 4 page(s) / 147K

Publishing Venue

IBM

Related People

Fiacco, V: AUTHOR [+4]

Abstract

This disclosure provides a means of actuating and de-actuating an area array connector which directly plugs in an appropriate receiver. As connectors become larger, the mating forces become very large and it is necessary to provide some mechanical means of actuating the device. Historically, the use of a side plugging, zero insertion force area array connector has been used in our systems. This concept has been more than adequate for the smaller applications which have been used in previous machines; however, as the requirement for increased pin numbers has become a reality, the density of these connectors must be increased. The side actuation concept requires a significant space within the active connector area for actuation and severely limits the maximum density attainable.

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

Multiple Screw Actuator for Direct Plug Connector

      This disclosure provides a means of actuating and
de-actuating an area array connector which directly plugs in an
appropriate receiver.  As connectors become larger, the mating forces
become very large and it is necessary to provide some mechanical
means of actuating the device. Historically, the use of a side
plugging, zero insertion force area array connector has been used in
our systems. This concept has been more than adequate for the smaller
applications which have been used in previous machines; however, as
the requirement for increased pin numbers has become a reality, the
density of these connectors must be increased.  The side actuation
concept requires a significant space within the active connector area
for actuation and severely limits the maximum density attainable.
The use of direct plugging eliminates this limitation but introduces
a much larger concern as to the actuation of the connector.

      The tool outlined herein defines a means of actuating several
jack screws simultaneously.  It is designed to provide a
predetermined final tightening torque on each individual screw and an
unspecified loosening torque on the jack screws.  It will take the
place of other devices such as wrenches or drivers which can be used
to turn each screw individually.  The advantage of such a device is
that it actuates each screw simultaneously and, by virtue of its
design, can permit each screw to reach its tightening torque
individually, as required.

      Various views of the device are shown in Figs. 1, 2 and 3.
Fig.  1 portrays the top view of this assembly to show the torque
adjustment nuts and drive hex.  Fig. 2 shows the assembly with the
top cover removed, providing an insight into the relationship of the
various component parts.  A labeled view of the exploded driver can
be found in Fig. 3.

      The basic operation of this tool is relatively simple.
Referring to Fig. 2, there are four peripheral gears which have an
integral clutch to provide a predetermined torque to each jack screw
during tightening.  These peripheral gear/clutch assemblies are
simultaneously driven by a central gear that incorporates an external
hex which can be turned with a conventional ratchet and appropriate
socket to fit this hex. In the configuration shown, for right-hand
jack screws, it will be necessary to rotate the hex in a
counter-clo...