| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric actuator which is improved in maintenance performance and reduced in cost by a simple structure.SOLUTION: In an electric actuator having a ball screw mechanism 8 which converts the rotational motion of an electric motor 3 to the linear motion of a drive shaft 7 in an axial direction via a speed reduction mechanism 6, an annular groove 21 is formed at an opening part of a bag hole 9 of a first housing 2a, a sleeve 18 is positioned and fixed in the axial direction by a hole snap ring 22 which is attached to the annular groove 21, and in which a curved part 22a is formed having an apex at a position which becomes symmetric with a notched part 23 opposing a peripheral direction as a center, a recess 24 for locking an attachment/detachment jig is formed at an internal periphery of the notch 23 in the snap ring 22, the recess 24 has a circular arc part 24a composed of a curvature radius R1, and a flat part 24b extending from the circular arc part 24a to a tangent line, and a dimension of the opening part 24c is set smaller than a diameter 2R1 of the circular arc part 24a.SELECTED DRAWING: Figure 5 |
