| 摘要 |
A disk drive unit for a disk (D), comprises a turntable (2) for a disk (D) which is rotatably supported by the base and drivable by a motor (6) including a stator (7) mounted on the base and a rotor (5) connected to the turntable. A clamping mechanism (9, 11) is provided to hold the disk firmly on the turntable. A suction mechanism (9, 10) effects an axial attraction force between the stator and the rotor. The clamping and suction mechanisms (9, 10, 11) include a single annular magnet (9) attached to the turntable (2) on a side thereof facing the stator (7). As a result, the magnet is protected against corrosion and foreign particles and there is no need for a back yoke to create sufficient attraction force. This leads to an easily balanced turntable which can be produced in a cost-effective manner.
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