Electro-mechanical brake

Abstract

Disclosed is an electro-mechanical brake which is compact due to a changed structure of a power transmission part. According to one aspect of the present invention, there is provided an electro-mechanical brake provided with a pair of brake pads disposed at both sides of a disc, the electro-mechanical brake including a driving motor, a first rotating part assembled with a rotating shaft of the driving motor, a second rotating part driven while connected to the first rotating part through a driving transmission member, a nut driving part rotationally driven while connected to the second rotating part so that power is transmitted to the second rotating part, and a screw driving part which is installed inside and engaged with the nut driving part and driven forward or backward according to a rotation direction of the nut driving part so that a piston pushes the brake pads to come into close contact with the disc, wherein one end of the screw driving part is assembled with the piston, the other end of the screw driving part passes through the driving transmission member and is disposed between the first rotating part and the second rotating part to move forward or backward.