Disc driving device

Details Disc driving device Disc driving device

1987-08-21

1989-02-07

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9906, 369266, 358906, G11B 5012, G11B 5016

Patent

active

048035769

ABSTRACT:
A disk driving device which can be reduced in production cost and in overall thickness and can prevent a circuit board from being damaged upon ejection of a disk cartridge therefrom. The disk driving device comprises a spindle shaft mounted for rotation relative to a base by means of a metal bearing, a spindle fitted at an end of the spindle shaft remote from the base and having carried thereon a turntable for receiving a disk for integral rotation, a stator yoke secured to the base, and a buffer member mounted on a face of a driving magnet opposing to a circuit board mounted on the base. The driving magnet secured to the spindle for electromagnetically cooperating with a driving coil secured to the circuit board to rotate the spindle is located between the circuit board and the stator yoke.

REFERENCES:
patent: 4306259 (1981-12-01), Saito et al.
patent: 4466032 (1984-08-01), Saito
patent: 4680655 (1987-07-01), Sugawara
patent: 4737870 (1988-04-01), Okita

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