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Browse Prior Art Database

Clam Shell Structure for 2-1/2-Inch Hard Disk Drive

IP.com Disclosure Number: IPCOM000119683D
Original Publication Date: 1991-Feb-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 2 page(s) / 58K

Publishing Venue

IBM

Related People

Neubauer, JL: AUTHOR [+2]

Abstract

Disclosed is a two-piece clam shell structure for enclosing a 2-1/2-inch hard disk drive. The primary structure is configured for easy installation of the major subassemblies and the secondary structure serves primarily as a cover for the head-disk assembly (HDA).

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 84% of the total text.

Clam Shell Structure for 2-1/2-Inch Hard Disk Drive

      Disclosed is a two-piece clam shell structure for
enclosing a 2-1/2-inch hard disk drive.  The primary structure is
configured for easy installation of the major subassemblies and the
secondary structure serves primarily as a cover for the head-disk
assembly (HDA).

      An exploded illustration of the clam shell structure and all
the major file subassemblies is shown in the figure. The clam shell
consists of a primary housing 1 and a detachable cover 2.  Openings
top and bottom are provided in the housing for fitting the two voice
coil motor (VCM) permanent magnet assemblies 3.  Features in the
housing (not shown) locate the magnets vertically relative to one
another.  Since the external surfaces of the magnet assemblies are
flush to the top and bottom surfaces of the clam shell housing, the
thickest magnet assemblies possible (without exceeding housing
height) can be used to maximize the performance of the VCM.

      Both the spindle assembly 4 and the actuator comb assembly 5
slip into the base housing and are accurately located and fixed in
place by shoulder screws 6.  Once the read/write heads 7 have been
merged with the disks 8 by rotating the comb assembly into position
and releasing the heads, then the two crash stop pins 9 may be
inserted through holes provided in the base housing to limit the
angular motion of the actuator.

      A recirculating filter 10 is shown fitting into the co...