Brake apparatus for vehicle

A brake apparatus for a vehicle comprising:

• a drive unit configured to generate a driving power;
• a transmission gear configured to be rotated by the driving power transmitted from the drive unit;
• a piston configured to (1) move along a first axis in response to a rotation of the transmission gear and (2) press or release a pad depending on a movement direction of the piston;
• a parking gear engaged with the transmission gear, and configured to be rotated in response to the rotation of the transmission gear;
• and
• a restriction unit configured to move toward and engage with the parking gear to restrict a rotation of the parking gear,
• wherein the restriction unit comprises:
• a parking drive unit configured to generate an electromagnetic force;
• a rod slidably movable in the parking drive unit, and configured to move in a first direction when the electromagnetic force is supplied thereto;
• a restoration unit positioned between the rod and the parking drive unit, and configured to move the rod in a second direction when a supply of the electromagnetic force is discontinued;
• and
• a stopper configured to be inserted into the parking gear when the rod moves in the second direction.