| 摘要 |
PURPOSE:To effectively rotate a rotor at every prescribed angle by sequentially moving forward and backward a presser having a piezoelectric ceramic to press the opposite peripheral surfaces of the rotor. CONSTITUTION:A cylindrical rotor 6 is engaged within a central hole 2 of a body, a guide slot 17 which is directed toward the rotating center of a rotor 6 is formed over the entire length of the inner periphery of the expanded portion 3 of the body, a presser 18 is engaged with the slot 17 telescopically toward the rotating center of the rotor 6 through a slip plate 20. When an actuator 30 is sequentially energized, the presser 18 is sequentially moved forward and backward, the outer periphery of the rotor 6 is pressed by the pressing portion 27 of the presser to rotate the rotor 6. |
