DRIVING UNIT FOR ELECTRIC PARKING BRAKE

摘要

A drive unit to drive a brake cable of an electronic parking brake comprises: a final gear; a first power transmission member coupled to the final gear to be rotated along with the final gear; a first power transmission member housing accommodating the first power transmission member; a second power transmission member coupled to the first power transmission member to axially be moved in correspondence to a rotation of the first power transmission member; a support member coupled to the first power transmission member to axially be moved with respect to the first power transmission member; an elastic member elastically supporting the support member as an end thereof is supported by a fixing frame axially fixated on the second power transmission member; a magnet mounted on the support member; and a sensor installed in the first power transmission member housing to measure a magnetic force of the magnet.