Patent ID: 9199623
Filing Date: 2015-12-01
Classification: B60T,F16D

Abstract:
1. A motor driven brake system including an electric motor for providing braking power, a push rod embodied as a shaft in the outer direction of the electric motor, a rotating shaft embodied as a shaft in the inner direction of the electric motor, and a parking brake housing mounted within the housing where an electric motor or electric motor with a reduction gear is mounted, the system comprising sliding disks and friction pads, alternately mounted between the outside diameter of the rotating shaft and the inside diameter of the parking brake housing that restrict or release the rotation of the rotating shaft; a pressure member disposed adjacent to the outermost sliding disk to press against the sliding disks and the friction pads, and having a screw aperture formed in an outer surface thereof; a compact motor mounted to an outside inner wall surface of the parking brake housing and operated upon receiving power supplied only during application of the braking of a parking brake and release of the parking brake; a screw-shaped push rod, as a driving shaft of the compact motor, inserted into the screw aperture of the pressure member so as to perform a standing rotation for the purpose of the forward-and-backward movement of the pressure member; and a controller applying power to the electric motor and compact motor, wherein the push rod and the rotating shaft are simultaneously rotated by operating the electric motor, and wherein the compact motor is operated by the controller when a clamping force applied to a disk is greater than a first reference value or when a rotational angle of the electric motor is greater than a second reference value.