Disclosed is an actuator for a brake device. An actuator for a brake device according to embodiment of the disclosure includes a housing accommodating a motor, a power transmission unit connected to the motor, and a reduction gear unit connected to the power transmission unit; and a cover covering an open top of the housing and having a shaft support portion; wherein the reduction gear unit includes a worm wheel including a concave receiving groove on an upper surface thereof and a locking rib provided in the receiving groove, a sun gear supported rotatably on a bottom of the receiving groove and having a support rib contactable with the locking rib during rotation, and a clutch spring provided in a state of being slidably wound around an outer circumferential surface of the shaft support portion, and configured to tighten or loosen selectively an outer circumferential surface of the shaft support portion according to a rotation direction when the worm wheel and the sun gear are rotated relative to each other.
Actuator for brake device and brake device including same
2025-03-04
Patent
Electronic Resource
English
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