Patent ID: 9453544
Filing Date: 2016-09-27
CPC Classification: B60T,F16D

Claim Text:
1. An electronic parking brake (EPB) apparatus for a vehicle, the apparatus comprising: a drum assembly comprising a brake drum and a brake lining; a driving motor configured for generating a driving force; a cable operating member operably coupled to the driving motor and configured to be rotated about an axis by the driving motor's driving force, wherein the cable operating member is configured to move along the axis in a first direction and a second direction opposite to the first direction as it rotates about the axis; a parking cable comprising a first end and a second end, the first end operably connected to the brake lining and the second end operably connected to the cable operating member; a first elastic member configured to apply a first restricting force to the cable operating member when the cable operating member moves in the first direction beyond a first position in the axis for releasing a parking brake; a second elastic member configured to apply a second restricting force greater than the first restricting force to the cable operating member when the cable operating member moves in the first direction beyond a second position along the axis that is further to the first position in the first direction; a current sensor configured to sense a driving current for the driving motor; and a controller configured to control operation of the driving motor based on the driving current.