| 摘要 |
The present invention is to provide an electric parking brake device comprising: a motor; a case; a screw which is connected to the motor to transfer power, and moves forward and backward in the case; and a stroke expansion means which includes an elastic member disposed on a movement path of the screw, a first pocket unit including a first support unit connected to the front end of the elastic member, and a second pocket unit including a second support unit connected to the rear end of the elastic member, wherein a third support unit of the second pocket unit coming in contact with the front end of the screw is positioned between the first support unit and the second support unit in the forward and backward direction of the screw. Accordingly, it is possible to provide an advantageous effect of minimizing loss stroke caused by the elastic member while detecting the braking force through the elastic member without a separate sensor. |
