Disk drive with reduced acoustic noise

Details Disk drive with reduced acoustic noise Disk drive with reduced acoustic noise

1992-01-22

1994-01-25

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

369263, G11B 3308

Patent

active

052821005

ABSTRACT:
A miniature fixed disk drive data storage and retrieval subsystem manifesting reduced acoustical noise during data storage and retrieval operations includes a flat, generally rectangular box-shaped base defining a substantially continuous bottom wall and a continuous peripheral sidewall ending in a continuous peripheral lip region. The base defines an interior chamber in which a mass balanced rotary actuator head positioner structure and an in-hub spindle motor assembly are positioned for rotating at least one data storage disk. A mechanical reinforcement structure is secured between an upper region of the rotary actuator structure and the base, and between an upper region of the spindle motor assembly and the base. A cover encloses the interior chamber and is secured at the continuous peripheral lip region by a mechanical isolation and sound dampening. The cover is also mechanically isolated from the mechanical reinforcement structure by a continuous airspace therebetween. With this arrangement acoustic noise otherwise emanating away from the cover is attenuated.

REFERENCES:
patent: 4285016 (1981-08-01), Gilovich
patent: 4922478 (1990-05-01), Verhagen
patent: 5027242 (1991-06-01), Nishida et al.
patent: 5034837 (1991-07-01), Schmitz
patent: 5041934 (1991-08-01), Stefansky

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