| 摘要 |
PURPOSE: To provide an actuator accurately positioned in a narrow movement range by constituting an output shaft in such a state as fitted to a drive sleeve so as to move only axially and drawn out by the rotation of the drive sleeve via an intermediate actuator. CONSTITUTION: A motor 56 is driven, the rotating force is transmitted to a drive sleeve 27 via bevel gear trains 51, 48, and when rotating it, an intermediate actuating member 70 is simultaneously rotated. The intermediate actuating member 70 is connected to the end 11 of an actuator housing 5 via a ball/nut mechanism so as to be advanced axially outward from the housing 5 by the rotation. The extension movement of the intermediate actuating member 70 advances the output shaft 92 connected to the end 83 of the intermediate actuating member 70 via the ball/nut mechanism, the output shaft 92 has the other end spline-connected to the drive sleeve 27 so as to extended by the rotation of the drive sleeve 27. |
