Magnetic disk apparatus and method for manufacturing the same

Details Magnetic disk apparatus and method for manufacturing the same Magnetic disk apparatus and method for manufacturing the same

1993-07-01

1994-11-08

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360106, G11B 1700

Patent

active

053632605

ABSTRACT:
A magnetic disk apparatus includes a base on which a spindle motor for rotating a magnetic disk and a carriage supporting a magnetic head are mounted. A voice coil motor for rotating the carriage is mounted on the base. The voice coil motor includes a bottom yoke, a top yoke facing the bottom yoke with a gap, a magnet fixed to the top yoke to face the bottom yoke, and a coil fixed to the carriage. The base is formed integrally with the bottom yoke by insert molding. The bottom yoke is partially buried in the base and its upper surface is exposed to the outside the base. The bottom yoke has tapped holes, and the top yoke with the magnet is fixed to the bottom yoke by screwing screws into the tapped holes via through holes bored in the top yoke.

REFERENCES:
patent: 5025335 (1991-06-01), Stefansky
patent: 5034837 (1991-07-01), Schmitz
patent: 5109310 (1992-04-01), Ohkjita

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