Miniature hard disc drive having low profile actuator arm voice

Details Miniature hard disc drive having low profile actuator arm voice Miniature hard disc drive having low profile actuator arm voice

1997-11-05

2000-05-30

Davis, David

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9801, G11B 1700, G11B 5012

Patent

active

060697660

ABSTRACT:
A disc drive system having at least one hard disc of approximately 48 mm diameter having concentric tracks is supported by a hub positioned in a centrally located aperture of approximately 12 mm diameter. The disc is rotated at a constant speed by a brushless DC motor attached to the hub. A transducer means for communicating information with the hard disc is moved relative to the disc surface by a positioning means. The positioning means includes a voice coil motor for selectably and accurately positioning the transducer means over the tracks on the hard disc. The disc drive system is enclosed in a housing means constructed from ferrous material having a base portion and a shell portion. The positioning means has a shaft about which the positioning means rotates. To provide a small, rugged assembly, the shaft is mounted at each end between the shell portion and base portion of the housing. Additionally, the shaft of the brushless DC motor is mounted in the same manner. The miniature disc drive system of the invention is designed to be permanently mounted in a portable, lap-top or notebook computer. Alternatively, the design is adaptable to enable the disc drive system to be utilized as a portable memory unit which may be inserted and removed from a connector port in the host computer.

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