Disclosed herein is an actuator unit and an electro-mechanical drum brake including the same. An actuator unit includes a front housing including a worm shaft engagement provided with a worm shaft insertion hole on a back surface and protruding forward therefrom, a first bearing receiving portion extending to a rear side of the worm shaft insertion hole, a worm shaft support engagement extending to a rear side of the first bearing receiving portion, and a cylinder portion disposed on a lower side of the worm shaft engagement, a rear housing provided with a motor embedded portion and engaged with the front housing, a motor embedded in the motor embedded portion, a worm shaft including a first bearing disposed between an outer circumferential surface and the first bearing receiving portion and a worm disposed on a front end side and coupled to the worm shaft engagement and rotated by receiving a rotational force from the motor, an actuating portion including a pair of actuating pistons embedded in the cylinder portion and moving to opposite sides of the cylinder portion by a worm wheel transmitting a rotational force from the worm and rotating thereon, and a worm shaft support coupled to the worm shaft support engagement to support a rear surface of the first bearing.
ACTUATOR UNIT AND ELECTRO-MECHANICAL DRUM BRAKE INCLUDING THE SAME
09.01.2025
Patent
Elektronische Ressource
Englisch
ELECTRIC ACTUATOR AND VEHICLE DRUM BRAKE INCLUDING THE SAME
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