| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electric actuator capable of advancing and retreating an output part to a housing even in a case where a fixed state occurs in a screw mechanism, and to achieve simplification and miniaturization of a structure.SOLUTION: In an electric actuator 1 having an output side screw 12 displaced in a shaft center direction by an input side screw 11 rotated by a first electric motor 5, bearings 6 and 7 attached to the input side screw 11 are fixed to a housing 2 via a pair of ring parts 21a and 22a. The electric actuator 1 comprises a ring part drive part 24 rotating any one of the pair of ring parts 21a and 22a to rotate the other ring part via a coupling mechanism 23, and separating the pair of ring parts 21a and 22a from each other in the shaft center direction of the input side screw 11.</p> |
