BRAKE DEVICE FOR VEHICLE

Proposed is a brake device for a vehicle including a housing, a cylinder installed within the housing, a motor coupled to the cylinder and providing a rotational force, a screw shaft installed within the cylinder and axially rotated by the rotational force of the motor, a nut coupled to the screw shaft through the medium of a ball member and reciprocating in the axial direction of the screw shaft depending on a rotation direction of the screw shaft, a piston coupled to the nut and moved by being interlocked with the nut, a guide provided within the cylinder and restricting the rotation of the nut and providing guidance to a rectilinear motion of the nut, and a cover coupled to the cylinder and covering the guide.