| 摘要 |
PURPOSE:To form a device in a compact size, by concentricaly providing an actuator rod and an electric motor and arranging a hollow rotor shaft functioning as a cylinder in length of the axial direction, in the case of a direct operated driving gear combined with the electric motor and a screw feed mechanism. CONSTITUTION:A driving gear, if it rotates an electric motor 13, rotates a hollow rotor shaft 14 with a rotor 21 while a screw shaft 18 integrally connecting its rear part 19 through a connecting member 20 with a rear part 14' of the rotor shaft 14. Whiel the driving gear fixes a nut part 17 screwed to the screw shaft 18 to the rear end part of an 17 screwed to the screw shaft 18 to the rear enf part of an actuator rod 12 further slidably holds in the axial direction a spline shaft part 11 of the actuator rod 12 through a slide supporting part (spline bearing) 16 fixed to a front part cover 15. Accordingly, the actuator rod 12, moving in either direction of left or right along the axial line of the screw shaft 18 by its rotation, comes to perform the action respectively as a pusher and a puller. |
