Acoustic vibration decoupler for a disk drive pivot bearing asse

Details Acoustic vibration decoupler for a disk drive pivot bearing asse Acoustic vibration decoupler for a disk drive pivot bearing asse

1995-11-21

1997-10-07

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 9702, 384536, G11B 555

Patent

active

056754566

ABSTRACT:
A vibration decoupler for a swing-type head actuator pivot bearing assembly in a disk drive. The invention selectively decouples axial actuator vibrations from the pivot shaft while retaining the radial and rotational rigidity needed to ensure head positioning precision. The head stack assembly is rigidly coupled to the pivot bearing shaft in the radial and rotational dimensions and is pliably coupled to the same shaft in the axial dimension. This decoupling scheme eliminates most acoustic vibration components created in the rotary actuator. Axial decoupling eliminates most acoustic vibration components transmitted from the pivot shaft to the drive housing. The vibration isolator may be fabricated as a single piece of injection-molded plastic, including all necessary elements for coupling to the pivot bearing and the actuator body.

REFERENCES:
patent: 2551621 (1951-05-01), Michelsen
patent: 2874008 (1959-02-01), Orte et al.
patent: 2897023 (1959-07-01), Burkhalter et al.
patent: 4900165 (1990-02-01), Kun et al.
patent: 5033875 (1991-07-01), Moulinet
patent: 5214549 (1993-05-01), Baker et al.
patent: 5282100 (1994-01-01), Tacklind et al.
patent: 5483398 (1996-01-01), Boutaghou
patent: 5501531 (1996-03-01), Hamaekers

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