Electromechanical transducer having two rotors

摘要

The electromechanical transducer (1) forming a clock drive motor comprises a stator (2) and two rotors (14 and 15). The two rotors are situated respectively in two stator holes (4 and 6), each defined by three stator poles (8a, 10, 12a; 8b, 10b, 12b). Each rotor comprises a permanent magnet (18a. 18b). The transducer is able to operate as a stepping motor, each of the two rotors being able to turn in either of rotational sense independently of the other rotor.