DISK STORE DRIVE

摘要

A disk store drive has a brushless drive motor having a stator (10) provided with a winding (27), and an external rotor coaxially surrounding the stator and spaced therefrom by a substantially cylindrical air gap and having a permanent magnetic motor magnet (13) and a soft magnetic yoke (17). A hub (37) is concentric to the yoke and is connected in non-rotary manner to the latter. The hub has a disk support portion (36), which can be passed through a central opening of storage disks for receiving at least one storage disk arranged in a clean area (49). A control magnet ring (45) carried by the rotor is arranged to co-operate with a stationary rotation position sensor arrangement (42) supported by way of a printed circuit board (38) to face said control magnet ring (45).