Patent ID: 6775224
Filing Date: 2004-08-10
Classification: F16F,G11B

Abstract:
A rotor balancer for use in a disk drive, comprising:a rotor; a ball case provided at a turntable on which a disk is mountable, installed at the rotor and having a circular racing space, the circular racing space having at least two racing faces, wherein an inner racing face has a greater friction coefficient than that of an outer racing face; and a balancing member moving on the racing faces of the racing space to automatically correct unbalance caused when the rotor rotates, wherein the rotor comprises the turntable, and the turntable includes: an insert unit which is insertable into a central hole of a disk; and a plurality of mounting spring pieces formed at the insert unit and made of an elastic material as well as having an elastic form so as to elastically support the disk when it is mounted on the turntable, so that the disk can be mounted accurately and firmly.