Electric actuator

An electric actuator, comprising:

• a motor;
• a motor case configured to accommodate the motor;
• and
• a motion conversion mechanism configured to convert a rotary motion generated through drive by the motor into a linear motion in a direction parallel to an output shaft of the motor,
• wherein the motion conversion mechanism comprises a movable part, which is arranged in parallel with the output shaft and is configured to perform the linear motion,
• wherein the movable part and the motor overlap one another in a radial direction of the motor,
• wherein a sensor target is arranged on the moveable part,
• wherein a non-contact sensor configured to detect a position of the sensor target along a linear motion direction in a non-contact manner is arranged in the motor case,
• wherein a shaft cover configured to cover a periphery of the movable part is provided integrally with the motor case,
• wherein a retreating portion at which an outer peripheral surface of the motor case retreats inwardly compared to a periphery of the retreating portion is formed between a case main body of the motor case, which is configured to accommodate the motor, and the shaft cover, and
• wherein the non-contact sensor is mounted to the retreating portion.