ELECTRONIC PARKING BRAKE FOR VEHICLE AND CONTROL METHOD THEREOF

摘要

An electronic parking brake for a vehicle includes: a drum assembly braking a wheel; a driving motor generating a driving force for braking the wheel; a driving gear coupled to a driving shaft of the driving motor and rotated; a driven gear coupled to the driving gear and rotated; a cable operating member geared to the driven gear, and advanced or retreated by the rotation of the driven gear so as to operate a parking cable of the drum assembly; an elastic member restricting the movement of the cable operating member; a current sensing unit configured to sense a driving current of the driving motor and provide the sensed driving current; and a control unit configured to operate the driving motor during brake release, and control the operation of the driving motor based on a change of the driving current inputted from the current sensing unit during brake release.

主权项

1. An electronic parking brake (EPB) for a vehicle, comprising:
a drum assembly braking a wheel; a driving motor generating a driving force for braking the wheel; a driving gear coupled to a driving shaft of the driving motor and rotated; a driven gear coupled to the driving gear and rotated; a cable operating member geared to the driven gear, and advanced or retreated by the rotation of the driven gear so as to operate a parking cable of the drum assembly; an elastic member restricting the movement of the cable operating member when the cable operating member is retreated by a preset distance or more during brake release; a current sensing unit configured to sense a driving current of the driving motor and provide the sensed driving current; and a control unit configured to operate the driving motor during brake release, and control the operation of the driving motor based on a change of the driving current inputted from the current sensing unit during brake release.