| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of components of an electric actuator.SOLUTION: An electric actuator 100 includes: a screw shaft 111 which is attached to one end part 200T1 side of a pull rod 200 and has spiral first grooves 121 on an outer circumferential surface; a rotor 113 where the screw shaft 111 is placed in a hollow part 113I, which has spiral second grooves 122 corresponding to the first grooves 121 on a part of an inner circumferential surface of the hollow part 113I, and where the other end part 200T2 side of the pull rod 200 protrudes from the hollow part 113I; a plurality of balls 123 placed between the first grooves 121 and the second grooves 122; a piece 112 which is attached to the rotor 113 and circulates the balls 123; a stator 110 for moving the pull rod 200 in its longitudinal direction by rotating the rotor 113; and a rotation suppression member 107 which is engaged with a part of the pull rod 200 and suppresses rotations of the pull rod 200. |
