| 摘要 |
1. Non-return device for self-starting synchronous motor, comprising a pinion with a non-return toothing (3b), fast with the rotor (1) of the motor, a cam (5) provided with a slot (5b) through which extends the shaft (2) of the rotor (1), mounted to pivot under the action of the rotation of the shaft (2) of the rotor (1), between two positions, and provided with a nose element (5c) adapted to cooperate with the non-return toothing (3b) of the pinion in one of the two positions of the cam (5), characterized in that there is provided a second pinion (4) mounted freely on the shaft (2) of the rotor (1) and extending in the slot (5b) of the cam (5), the pinion (4) being adapted to be driven in rotation by the rotor (1) and to drive the cam (5) in a pivoting movement. |
