Brake apparatus for vehicle

A brake apparatus for a vehicle comprising:

• an operation member on which a braking operation is performed by an occupant;
• a master cylinder in which a front pressure chamber and a rear pressure chamber are defined by movably supporting a drive piston in a cylinder and which can output a hydraulic pressure in the front pressure chamber by moving the drive piston by the operation member;
• a control pressure setting unit for setting a target control pressure according to an operation force input from the operation member to the drive piston;
• a hydraulic pressure supplying source;
• a wheel cylinder coupled to the front pressure chamber and generating a braking force to a wheel;
• and
• a pressure control valve capable of adjusting a hydraulic pressure from the hydraulic pressure supplying source by moving a drive valve by an electromagnetic force on the basis of the target control pressure, outputting the adjusted hydraulic pressure to the rear pressure chamber and the wheel cylinder, adjusting a hydraulic pressure from the hydraulic pressure supplying source by moving the drive valve by an external piston which is moved by the hydraulic pressure from the front pressure chamber, and outputting the adjusted hydraulic pressure to the rear pressure chamber and the wheel cylinder.