Disk file actuator with combined carriage rail and isolator mount for drive magnet
AssigneeInternational Business Machines Corporation
InventorsDarryl G. Chong, Burford J. Furman, Edward L. Mathurin, Thomas J. Rajac
Life of this patent
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Abstract
An apparatus is disclosed for actuating the read-write heads of a disk file in which a plurality of support rails having resilient bushings at either end support on their central portions a carriage for the read-write heads and on their resilient bushings the support structure for the magnets which drive the carriage during operation. Reaction forces arising in the magnets are thereby isolated from the support rails and the frame.
Claims12
An actuator for moving a read or write head to selected tracks on a disk in a data recording disk file of the type having a frame supporting the actuator, the actuator comprising:
- a movable carriage for supporting and moving the head;
- an electrically conductive coil mounted on the carriage;
- at least two carriage guide rails generally rigidly secured to the frame;
- means attached to the carriage for supporting the carriage on the guide rails during movement;
- at least two magnets for generating a magnetic field;
- means secured to the magnets for positioning the magnets for electromagnetic interaction with the coil to cause the carriage to move along the guide rails upon electrical actuation of the coil;
- and
- means resiliently connecting the magnet positioning means to the carriage guide rails for attenuating reaction forces acting on the magnets in a direction opposite the direction of movement of the carriage when the coil is electrically actuated, said resiliently connecting means substantially supporting said magnet positioning means, whereby the carriage guide rails and the disk file frame to which they are generally rigidly secured are substantially isolated by said resiliently connecting means from the effect of the reaction forces on the magnets.
In a read or write head actuator attached to a frame of a data recording disk file, the actuator being of the type having a movable carriage for supporting and moving the head, an electrically conductive coil mounted on the carriage, at least two carriage guide rails spaced on opposite sides of the carriage and generally rigidly secured to the disk file frame, each of the guide rails having a longitudinal axis generally parallel to the direction of movement of the carriage, means attached to the carriage for supporting the carriage on the guide rails, and a-magnet structure for generating a magnetic field through the electrically conductive coil, an improvement for attenuating the reaction force on the magnet structure caused by movement of the carriage when the coil is electrically actuated, the improvement comprising:
- means located between each of the guide rails and the magnet structure for resiliently connecting the magnet structure to the guide rails, said resiliently connecting means substantially supporting said magnet structure, whereby a substantial portion of the reaction force acting on the magnet structure in a direction opposite the direction of movement of the carriage is isolated by the resiliently connecting means from the guide rails and the frame to which the guide rails are generally rigidly secured.
Dependencies are inferred from the claim text.