ELECTRIC MOTOR

AN ELECTRIC MOTOR USED FOR EXAMPLE IN A MAGNETIC DISK DRIVE, COMPRISES A ROTOR(109) HAVING A HUB ON WHICH THE MAGNETIC DISK IS MOUNTED, AND AN ANNULAR DRIVING PERMANENT MAGNET(110), AND ROTATING TOGETHER WITH A ROTARY SHAFT, AND A STATOR(103)DISPOSED OUTSIDE THE ROTOR(109), HAVING A CORE(103a) AND C...

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Bibliographische Detailangaben
Hauptverfasser:	TOSHIHIKO HORII, TOSHIO TATSUTANI, YUZI SERIZAWA, TETSUYA TANAKA
Format:	Patent
Sprache:	eng
Schlagworte:	CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DYNAMO-ELECTRIC MACHINES ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	AN ELECTRIC MOTOR USED FOR EXAMPLE IN A MAGNETIC DISK DRIVE, COMPRISES A ROTOR(109) HAVING A HUB ON WHICH THE MAGNETIC DISK IS MOUNTED, AND AN ANNULAR DRIVING PERMANENT MAGNET(110), AND ROTATING TOGETHER WITH A ROTARY SHAFT, AND A STATOR(103)DISPOSED OUTSIDE THE ROTOR(109), HAVING A CORE(103a) AND COILS (106)WOUND ON THE CORE(103a). A SIGNALLING PERMANENT MAGNET (111,111A) FOR DETECTING THE ROTARY ANGLE OR THE ROTATIONAL SPEED OF THE ROTOR MAY BE PROVIDED ON THE RADIALLY INNER SIDE OF THE DRIVING PERMANENT MAGNET(110).(FIGURE. 7)