| 摘要 |
<p>Uses bistable mechanical actuator (11) comprising one piece movable cylinder (14) with both translation and rotation movement in fixed tube (13) to which it is linked , by interaction of guide finger (16), to ramp (15). The part (14) is pushed by spring (18) in direction of a switch and connected to manually activated traction part (17), which exerts force opposite to that of the spring. The actuator is brought to stable state either by the rotation of motor casing, or by the part . Controller for an electric motor driving a movable part, it includes a switch (12) controlling the motor supply and switch actuator reacting to retain the movable part to initiate opening of the switch and interrupt the supply. The actuator can occupy a first state in which the switch is closed and a second state in which the switch is open. A manual means (17) is used to put the actuator in its first state and is moved into its second state by retention of the movable part. The mechanical actuator is a bistable unit. The motor casing (3) is capable of turning through a limited angle around its axis, against the action of a spring (6,7), under the effect of a torque created by the movable part.</p> |
