| 摘要 |
Arrangement for starting a synchronous motor of which the rotor (15) energized by a permanent magnet is provided to insure the starting of the motor under load with a circumferential play on the drive shaft (27). Thus, a substantially load-free starting of the rotor (15) is obtained, whereby, after passage of the circumferential play, a first coupling part (24) attacks a second coupling part (25) connected to the drive shaft (27) and drives the latter. To obtain a predetermined rotational direction of the rotor there is provided a rotational direction blocking unit (33, 38) which, in a given rotation direction of the rotor releases the rotation of the drive shaft (27), while the opposite rotation direction of the drive shaft is blocked. |
