Data storage device having a drive mechanism for rotating a data storage medium
a data storage device and drive mechanism technology, applied in the direction of motor/generator/converter stopper, dynamo-electric converter control, instruments, etc., can solve the problem of heating up of electronic components within the interior of the motor housing, and no longer arise the particularly critical problem of the heating of electronic components, etc., to achieve the resolution of recorded signals, shorten the axial length of the motor correspondingly, and large data carrier diameter
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FIG. 1 depicts the principles of an exemplary embodiment having an external-rotor brushless d.c. motor 1. The four-pole stator 2 is provided with a winding made up of four coils 3-6 and is, in a known fashion, encircled by a permanent-coils magnet rotor 7.
For the sake of a simple illustration of inventive principles there is shown an external-rotor d.c. motor having an annular air gap; self-evidently, however, one can use any other motor type that would be suitable, in the sense of reduced axial length, a disk-rotor motor having a planar air gap being also preferred.
Rigidly connected to shaft 8 of motor 1 is a hub 9 on which a data carrier 10 is arranged. The data carrier 10 is constituted by a rigid or flexible computer data-storage platter carrying data signals on concentric tracks. A write / read head 11 is arranged to be movable in radial direction over the data carrier 10; by means of head 11 data signals on the concentric tracks of data carrier 10 can be written, read, or erased...
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