Patent ID: 6316854
Filing Date: 2001-11-13
Classification: G11B

Abstract:
An automatic up-and-down disc clamping apparatus with magnets, comprising:a spindle motor having a shaft portion, with a turntable fixed on top of the shaft portion such that the shaft is encased in a center of the turntable, the turntable is brought into a rotating motion by a rotation of the spindle motor, and a disc is supported by the turntable when the spindle motor is lifted up to an attachment position;a first magnet fixed to the turntable;a locking plate having a recess with a second magnet fixed to a bottom of the recess, and an opening of the recess facing the turntable on the spindle motor; anda disc clamp having a magnet conductive material within, with the disc clamp attached to the locking plate by an attraction of the second magnet, and clamped onto the disc by an attraction of the first magnet when the spindle motor is in the attachment position.