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High-Performance, Zero-Backlash Clutch with Positive Axial Registration

IP.com Disclosure Number: IPCOM000108563D
Original Publication Date: 1992-Jun-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 3 page(s) / 76K

Publishing Venue

IBM

Related People

East, DG: AUTHOR [+2]

Abstract

The clutch mechanism described here provides a non-slip, zero-backlash attachment with repeatable axial registration for a data cartridge. This mechanism could also be applicable to other consumer-market video cartridges.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 88% of the total text.

High-Performance, Zero-Backlash Clutch with Positive Axial Registration

       The clutch mechanism described here provides a non-slip,
zero-backlash attachment with repeatable axial registration for a
data cartridge.  This mechanism could also be applicable to other
consumer-market video cartridges.

      Tape cartridges of this type are designed for use in a
low-speed streaming-type drive.  Because of this, the tape hubs do
not include features that would allow high acceleration, stop/start
operation at higher speeds.  This clutch mechanism will allow that
type of drive operation without modification or additional features
to the standard commercial cartridge.

      The operation of the clutch is illustrated in the figures.

      In Fig. 1, the molded hub 1 has a slightly conical center hole
2.  This hole has internal teeth which are used to transmit torque
from the drive collet on the motor to the media on the hub.  The
drive collet 3 has external teeth that match the internal teeth of
the hub. As the hub is loaded onto the end of the collet, it first
engages the pull rod 4.  This contact activates the pull rod, which
then pulls down into the collet.  As this happens, the conical
interface between the pull rod and the collet causes the collet to
expand and positively engage the tape hub.  Further travel of the
pull rod causes the collet and hub to move downward until the hub is
in contact with the clutch body 5.  (See Figs. 1 and 2.)  Contin...