Browse Prior Art Database

Auto-Docking of Bus-Converter Box

IP.com Disclosure Number: IPCOM000102219D
Original Publication Date: 1990-Nov-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 2 page(s) / 66K

Publishing Venue

IBM

Related People

Green, TD: AUTHOR [+4]

Abstract

A Differential to Single-sided (D-SE) box houses electronic hardware necessary to convert from a single differential SCSI bus to four- and single-ended SCSI buses. The box is constructed of 1.2 mm sheet metal and contains several auto-docking features which enable the four SCSI- SE and one power connectors located at the front of the box to seat with their counterparts automatically when the box is inserted.

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Auto-Docking of Bus-Converter Box

       A Differential to Single-sided (D-SE) box houses
electronic hardware necessary to convert from a single differential
SCSI bus to four- and single-ended SCSI buses.  The box is
constructed of 1.2 mm sheet metal and contains several auto-docking
features which enable the four SCSI- SE and one power connectors
located at the front of the box to seat with their counterparts
automatically when the box is inserted.

      Initial alignment is accomplished by a rail/channel
configuration and serves as a rough alignment between the D-SE
connectors 1 and the cable carrier connector housings 2 (see Figs. 1
and 2).  This alignment guides the box within a  2.5 mm tolerance
with respect to the carrier connectors. As the box approaches the
carrier, two guide pins 3 control the lateral movement of the D-SE
box during the last 10 mm of travel.

      After the guide pins 3 are engaged, the SCSI and power
connector housings 2 guide along the outer edges of the D-SE
connectors 1 and align the connectors both laterally and vertically
for seating.  Final travel is accomplished by the use of a jackscrew
4.  This piece of hardware is necessary to overcome the high level of
insertion forces needed to seat the five connectors.  The jackscrew 4
is also beneficial in unseating the connectors for extraction of the
unit.