Brake device for vehicle

Abstract

A brake device for a vehicle includes a cylinder part, a motor part that generates rotational power, a screw shaft that is disposed inside the cylinder part, receives the rotational power of the motor part, and is axially rotated, a nut part that is coupled to the screw shaft and reciprocates in an axial direction of the screw shaft according to the rotation of the screw shaft, a sleeve part that is disposed between the cylinder part and the screw shaft, a piston part that is coupled to the nut part and includes a head portion reciprocating inside the sleeve part according to reciprocating movement of the nut part, a bearing part that is disposed inside the cylinder part and coupled to the screw shaft, and a reaction force part that has a first side supported on the cylinder part and a second side in contact with the sleeve part, presses the sleeve part toward the bearing part, and is capable of contacting the head portion.

Dependencies are inferred from the claim text.