Self-compensating dynamic ball balancer for disk player

Abstract

In a self-compensating dynamic ball balancer for a disk player including a deck plate, a spindle motor is installed at the deck plate for providing a rotational force to a disk. A turntable is installed at a rotation shaft of the spindle motor for accommodating the disk. A clamper holds the disk in place on the turntable and an optical pickup is installed at the deck plate to be capable of moving across the disk for recording and/or reproducing information on/from the disk. The self-compensating dynamic ball balancer also includes a main body, having a circular race, installed at at least one among a rotor of the spindle motor, a rotation shaft of the spindle motor, the turntable, and the clamper. A plurality of balls are placed inside the race such that the center of gravity thereof is located opposite to that of the disk with respect to the rotation shaft of the spindle motor by the centrifugal force generated during rotation of the disk. A cover member is installed to cover an opening of the race. The race of the main body has a bottom surface, an inner circumferential wall, and an outer circumferential wall. The outer circumferential wall and/or the bottom surface are shaped to be able to guide the movement of the balls which contact the outer circumferential wall of the race by the centrifugal force generated when the disk is rotated at the recording and/or reproducing speed.

Dependencies are inferred from the claim text.