| 主权项 |
1. An electric actuator comprising:
a motor rotation unit integrated with an output shaft of an electric motor to form a rotor of the electric motor; a worm gear unit fitted to a first portion of the output shaft, the first portion being projected from the motor rotation unit to one side in an axial direction, the worm gear unit configured to receive thrust load from a worm wheel in the axial direction; a bearing located between the motor rotation unit and the worm gear unit in the axial direction and configured to support the output shaft rotatably, the bearing further configured to, when the worm gear unit receives the thrust load and thereby is moved toward an other side in the axial direction, collide with the worm gear unit to restrict the worm gear unit from moving toward the other side in the axial direction; a yoke having a bottom portion, the bottom portion surrounding the motor rotation unit on the one side in the axial direction and having a shaft hole through which the output shaft passes; an axial hollow being a dent formed by press working in the bottom portion to be coaxial with the shaft hole and to open on the one side in the axial direction, the axial hollow press-fitted with the bearing to accommodate the bearing; and a projected piece being a part of the yoke and formed by the press working simultaneously with the axial hollow, the projected piece projected toward the output shaft to define an inner circumferential periphery of the shaft hole, the projected piece being located between the motor rotation unit and the bearing in the axial direction. |
