| 主权项 |
1. An electric pump, comprising:
a housing; a motor including a stator disposed in the housing, a rotor disposed in the stator and a rotating shaft passing through the rotor; a pump comprising an inner rotor coupled to one end of the rotating shaft and an outer rotor; a first bearing supporting rotation of the rotating shaft; a sealing member disposed between the first bearing and the motor; and a second bearing supporting the rotation of the rotating shaft, wherein the housing comprises an inserting recess formed on one side thereof for receiving the pump and a recess portion formed on the other side thereof for receiving the motor unit, wherein a bottom surface of the inserting recess is disposed between the inserting recess and the recess portion and comprises a through hole in which the rotating shaft passes through therein, wherein the through hole includes a first hole having a first diameter, a second hole having a second diameter, and a third hole having a third diameter, wherein the second hole is connected to the first and third holes, wherein the second diameter is smaller than the first diameter, and the second diameter is larger than the third diameter, wherein the sealing member is disposed in the first hole and the first bearing is disposed in the second hole, wherein the third hole includes a gap disposed between an inner circumstance of the third hole and the rotating shaft, wherein the first bearing is disposed at one side of the rotor, and the second bearing is disposed at the other side of the rotor. |
