Patent ID: 6314077
Filing Date: 2001-11-06
Classification: G11B

Abstract:
A disk drive, comprising:a drive unit including a mechanical chassis, a spindle motor for rotating a turn table on which a recording medium disk is supported, and a pickup movable in the-radial direction of said recording medium disk supported by said turn table for reproducing and/or recording signals from and/or in said recording medium disk;a base chassis for supporting said drive unit via an elastic body;a self-aligning mechanism including a holder rotatable together with a rotor portion of said spindle motor and a balance member movable in said holder;a counter weight disposed at a position suitable to allow the center of gravity of said drive unit to be located in conformity to or in proximity to the rotational center of said spindle motor;wherein said counter weight is disposed on a side of the mechanical chassis opposite said pickup and spindle motor, andwherein said counter weight is a plurality of counter weights.