Browse Prior Art Database

DASD Frame Assembly And Clamping Mechanism

IP.com Disclosure Number: IPCOM000099555D
Original Publication Date: 1990-Feb-01
Included in the Prior Art Database: 2005-Mar-15
Document File: 8 page(s) / 268K

Publishing Venue

IBM

Related People

DeWitt, JR: AUTHOR [+4]

Abstract

This article describes a direct access storage device (DASD) frame assembly which is designed to allow for rapid installation and removal of DASD devices in factory and service environments.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 42% of the total text.

DASD Frame Assembly And Clamping Mechanism

       This article describes a direct access storage device
(DASD) frame assembly which is designed to allow for rapid
installation and removal of DASD devices in factory and service
environments.

      In the drawings:

      Fig. 1 is a perspective view of a system unit with the DASD
frame assembly installed.

      Fig. 2 shows the DASD frame assembly with associated DASD
devices installed.

      Fig. 3 is a partial sectional view showing a stop tab which is
used to restrict the motion of the "D" position DASD device as it is
installed from the front.

      Fig. 4 is an exploded perspective view of the DASD frame
assembly showing in detail the means used to clamp DASD devices in
place and the means used for attachment to the system unit cover.

      Fig. 5 is a partial cross-sectional view showing the
installation of a DASD device in the DASD frame assembly.

      Fig. 6 is a partial cross-sectional view taken through the DASD
frame, viewed from the right.

      Fig. 7 is a diagrammatic representation of the system unit
indicating the mechanical contact points between the DASD frame
assembly, the system unit framework and the top cover.

      Fig. 8 shows the system unit indicating the screws fastened
through the top cover into the DASD frame.

      Referring to Fig. 1, a system unit 1 includes a frame 2, a
planar board 3, and a DASD frame assembly 4.  In order to save space
within the machine, the DASD frame assembly extends over the planar
board, with means for attachment at its front and rear areas 5 and 6.

      Referring to Fig. 2, a "C" position DASD device 7 may be
installed in the rear portion of the DASD frame assembly 4 by being
lowered and being subsequently pushed to the rear, as indicated by
arrow 8.  A "D" position DASD device 9 may be installed by being
pushed to the rear through a hole in the frame 4, as indicated by
arrow 11.  Each DASD device 7 and 9 is subsequently secured in place
by tightening the associated clamping knob assemblies 12.  The proper
installed position of "C" position DASD device 7 is determined by
contact between ends 19a of rails 19 and associated tabs 4a of DASD
frame assembly 4. Similarly, referring to Fig. 3, the proper
installed position of "D" position DASD device 9 is determined by
contact between the ends of its rails 19a and an associated surface
4b of a stop tab 4c attached to the DASD frame assembly 4.  This stop
tab 4c, which is configured using a deflectable material, such as
thin sheet of stainless steel, includes outward slanting surfaces 4d
and 4e so that this tab is moved out of the way when the "C"
position DASD device is installed or removed.  Thus, this tab 4c is
allowed to occupy the space between the DASD devices without
interfering with the installation or removal of the "C" position DASD
device.  After installation each DASD device can be removed by
reversing the procedur...