Cantilevered support for the magnetic circuit of a disc drive vo

Details Cantilevered support for the magnetic circuit of a disc drive vo Cantilevered support for the magnetic circuit of a disc drive vo

1997-03-31

1999-06-22

Miller, Brian E.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 9701, G11B 554

Patent

active

059148365

ABSTRACT:
A support assembly for supporting a magnetic circuit of a disc drive voice coil motor, the support assembly suppressing the excitation of mechanical resonances in the drive. The disc drive includes a disc and an actuator assembly adjacent the disc, the actuator assembly having a coil of a voice coil motor to which current is applied in order to position a head of the actuator assembly relative to the surface of the disc. The voice coil motor further includes a magnetic circuit comprising a pair of permanent magnets and corresponding magnetically permeable pole pieces disposed above and below the coil. The support assembly suspends the magnetic circuit between a base deck and a top cover of the disc drive and allows cantilevered movement of the magnetic circuit in response to the acceleration of the coil as a result of current being applied to the coil.

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patent: 5650895 (1997-07-01), Koizumi et al.
patent: 5657179 (1997-08-01), McKenzie

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