Disc drive linear actuator

Details Disc drive linear actuator Disc drive linear actuator

G - Physics

11

B

352/30.2, 352/21

G11B 5/55 (2006.01)

Patent

CA 1227279

ABSTRACT In a disc drive, a positioning apparatus including a carriage, guides for directing the linear travel of the carriage, and drive means driven by a stepper motor for moving the carriage from one position to another. The carriage is supported in guide means for rolling movement by three hardened and ground balls confined in grooves cut in the sides of the carriage and the guide rails. The balls are separated and confined in the longitudinal direction by a retainer which moves parallel and proportionately to the carriage. The retainer is moved by a rack and pinion device, the pinion being movable with the retainer and confined between two racks, one rack being fixed to one of the guide walls or rails, the other rack being movable with the carriage itself.

479095

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