Patent ID: 8151947

Claim:
A single motor electronic controlled wedge brake system, comprising: a mounting plate that is fastened to a carrier and is movable in a pressing direction of a disc rotor; a base wedge that is movably installed on the mounting plate; a movable wedge that is supported by the base wedge through a roller cage and is configured to be actuated by a motor to cause the inner and outer pads to contact the disc rotor during braking; a correcting wedge that is in contact with a fixed wedge fixed to the mounting plate so as to be movable in the pressing direction of the disc rotor, and wherein the correcting wedge supports the rear side of the base wedge; an adjusting unit that includes a pinion nut that axially moves with engagement with a lead screw to movably support the correcting wedge, selectively applies reaction force to the correcting wedge, and corrects a gap between the inner and outer pads that are worn and the disc rotor by cooperation with the movable wedge; a mechanical reaction mechanism that selectively restricts movement of pinion nut by cooperation with the movable wedge; an electrical reaction mechanism that selectively restricts the movement of pinion nut on the basis of the traveling condition of a vehicle; a fail safe detector that detects restriction of wheels, wherein when the fail safe detector detects the restriction of wheels, the electrical reaction mechanism is stopped; a starting detector that detects whether a vehicle starts, wherein when the start detector detects that starting is off, the electrical reaction mechanism is stopped and the motor is reversed to starts the mechanical reaction mechanism; and the adjusting unit includes a first power converting mechanism that converts a linear motion into a one-directional rotary motion by cooperation with the movable wedge, a torsion beam that receives the torque transmitted from the first power converting mechanism, and a second power converting mechanism that converts the rotational force transmitted from the torsion beam into the linear motion of pinion nut.