Browse Prior Art Database

Pluggable Hard Disk File Assembly

IP.com Disclosure Number: IPCOM000100238D
Original Publication Date: 1990-Mar-01
Included in the Prior Art Database: 2005-Mar-15
Document File: 5 page(s) / 195K

Publishing Venue

IBM

Related People

Glaser, TW: AUTHOR [+3]

Abstract

Disclosed are four techniques for electrically and mechanically plugging small hard disk drives (HDDs) into a common motherboard to accommodate file arrays or miniclusters within a connection structure.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 45% of the total text.

Pluggable Hard Disk File Assembly

       Disclosed are four techniques for electrically and
mechanically plugging small hard disk drives (HDDs) into a common
motherboard to accommodate file arrays or miniclusters within a
connection structure.

      Mechanical isolation (shock mounting) is assumed between the
drives and the motherboard to preserve integrity of the magnetic
memory devices.  For ease of customer replacement, HDD
installation/removal is quite straightforward.

      Descriptions of four methods to provide HDD-to-motherboard
pluggability follow.  For simplicity, the first three methods depict
only one device fitted to a motherboard; however, multiple HDDs are
implied.  The fourth technique is shown to accommodate eight HDDs
arranged to fit within a 5-1/4-inch form factor, but any suitable
combination is acceptable.

      Method 1--Fig. 1 illustrates a small HDD 1, a motherboard 2,
and an exploded view of a combination electrical/mechanical connector
3.  The electrical part of the connector is typical of elastomeric
connectors in that low resistance contact strips 4 are integral with
a resilient elastomer 5.  The elastomer 5 serves to provide
mechanical isolation (shock absorption) between the motherboard 2 and
a connector housing 6 and also to provide pressure between the
connector's contact strips and mating contact strips 7 on the
motherboard 2 and on the underside of the HDD 8.  The underside of
the elastomer is firmly attached to the motherboard 2 and the top
surface is attached to the connector housing 6 by a suitable
adhesive, for example.  Resilient grommet style isolators (shock
mounts) 9 are attached to the bottom side of the HDD toward the end
opposite the connector.

      Plugging the HDD to the motherboard 2 is accomplished by
lowering the HDD toward the board, inserting grommets into key hole
slots 1, and sliding the HDD toward the connector until the latch
levers 11 engage the notches 12 provided on each side of the HDD base
plate.  The corners of the base plate cam under the two corner
gussets 13 of the connector housing 6, therefore compressing slightly
the elastomeric connector to provide a secure electrical connection.
A combination  of the grommets trapped in key hole slots 1,
entrapment of the two corners of a base plate under the corner
gussets of the connector housing 6, and engagement of the latch
levers 11 into the notches provided in base plate mechanically secure
the HDD to the motherboard 2.  Release of the HDD from the
motherboard 2 is accomplished by squeezing the handles of the latch
levers 11 inwardly while simultaneously sliding the HDD from the
connector and lifting the HDD to disengage the grommets from the key
hole slots 1.

      Method 2--Fig. 2 illustrates a small HDD 1, a tray assembly 2,
grommet style isolators 3, and an electrical motherboard 4.  At
assembly the grommets are deformed and fitted into corresponding
holes 5 provided in the motherboard. ...