Waterproof sealing's electric actuator

The utility model relates to a waterproof sealing's electric actuator, including box, output shaft, the hand wheel body, case lid, worm wheel and worm, the output shaft is provided in the box, and the case lid is installed in the box upper end, and the hand wheel body is installed and is located the case lid top in the output shaft upper end, and hand wheel body top is equipped with the hand wheel, and the output shaft upper end is equipped with the upper cover, the worm wheel cup joint on the output shaft with the box in the worm cooperate, the output shaft lower extreme has a three -jaw through the key -type connection, the flange is installed to the box lower extreme, box upper end internal diameter is equipped with the step, it is located between case lid and the box to install the O -ring seal on the step, the cover has the oil blanket between the hand wheel body and the output shaft. The utility model discloses simple structure through addding the O -ring seal between case lid and box, and makes sealing of O -ring seal maximum area, guarantees the normal use of inside electrical part, has prolonged electric actuator's life.