Browse Prior Art Database

Head-Suspension Arrangement to Save Space in a Disk Drive

IP.com Disclosure Number: IPCOM000115641D
Original Publication Date: 1995-Jun-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Heath, J: AUTHOR

Abstract

The use of disk drives in laptop and notebook computers requires that the drives be slim to enhance the portability and convenience of the product. This in turn requires that all elements of the file structure should be thin, including the heads and suspensions, which in turn define the separation of the disks.

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Head-Suspension Arrangement to Save Space in a Disk Drive

      The use of disk drives in laptop and notebook computers
requires that the drives be slim to enhance the portability and
convenience of the product.  This in turn requires that all elements
of the file structure should be thin, including the heads and
suspensions, which in turn define the separation of the disks.

      The head suspension used in many products includes a load beam
formed from thin sheet metal into a tapered channel beam.  Normally
the two suspensions between a pair of disks are arranged to be
superimposed over each other in a plan view of the disk drive.  This
is convenient in many respects but the opportunity exists to gain a
height reduction by a small sideways displacement of one head in each
pair so that the sides of the channels do not lie in co-incident
planes.

      The advantage of this arrangement is gained during the assembly
of the product when it is necessary to merge or insert the heads
between the disks.  To do this the heads have to be deflected toward
each other by a small amount in order to clear the disks.  This
invention enables this merge clearance to be obtained by the
interleaving of the channel sides as shown in the illustration.
Since the channel sides are typically 0.5 mm high, a gain of 0.5mm
per disk space can be obtained.  In the case of a multiple disk
product the invention permits the addition of a one more disk in a
product that would otherwise...