| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a small and inexpensive electric actuator capable of moving an operation rod at a relatively fast speed. <P>SOLUTION: Driving by a motor moves a moving body 8 in the arrow A direction against elastic repulsive force of a first compression coil spring 9 via a rotary shaft 23, a small diameter gear 28, a large diameter gear 30, a pinion 30a and a rack 8b. An engaging part 33a of a stopper pin 33 engages with an engaging groove 11c of the operation rod 11 moving integrally with the moving body 8, so that one end part 11b of the operation rod 11 is held in a state of being pushed out to an external part of a casing 6. At the same time, the transmission of the driving between the motor and the rotary shaft 23 is cut by an electromagnetic clutch. A plunger 32a of an electromagnetic solenoid 32 is retreated from this state, and when releasing engagement between the engaging part 33a and the engaging groove 11c, the operation rod 11 moves in the arrow B direction by the stored elastic repulsive force of the first compression coil spring 9. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
