Patent ID: 8566854
Filing Date: 2013-10-22
Classification: G11B,H02K

Abstract:
1. An apparatus for rotating a disk comprising: a rotation shaft; a turn table coupled to the rotation shaft and having a felt that makes contact with a disc; a center guide member inserted into the rotation shaft and coupled to an inner face of the disc; a clamp magnet sticking a clamp unit that is faced with the turn table and makes contact with an upper face of the disc toward the felt; and an elastic member interposed between the turn table and the center guide member and the elastic member elastically supporting the center guide member in an axial direction of the rotation shaft, wherein an anti-slip torque that is applied to the upper face of the disc by using the clamp unit and the elastic member is stronger than a rotation torque that is generated by the turn table to prevent slipping of the optical disc from the turn table, wherein a force that pushes the center guide member to the axial direction of the rotation shaft from the elastic member is about 150 g wherein a force of the clamp unit that presses the optical disc is about 450 g wherein the anti-slip torque is about 800 g