Apparatus for activating a disk clamper by magnetic restoring force

摘要

An apparatus for activating a disk clamper by magnetic restoring force is provided for an optical disk drive having a casing and a cartridge for carrying an optical disk along a path in the optical disk drive. A spindle motor is mounted below the casing that is made of material which can be induced by a magnet. A disk clamper includes a magnet mounted therein and has a central axle coaxial with a central axis of the spindle motor. The disk clamper and the spindle motor are respectively located on two sides of the disc when the cartridge is inside the optical disk drive for securely clamping the optical disk together. When the spindle motor moves upwardly, the disk clamper is moved downwardly to clamp the optical disk in the cartridge under action of magnetic force between the spindle motor and the magnet in the disk clamper. When the spindle motor moves downwardly, the disk clamper is moved upwardly under action of magnetic force between the magnetic casing and the magnet in the disk clamper, thereby preventing an obstacle to inward and outward movements of the cartridge into and out from the optical disk drive.