Pedal simulator

A pedal simulator comprising:

• a cylinder of which a side is connected to a reservoir storing a pressing medium and another side is connected to a wheel cylinder, the cylinder including an internal space in which the pressing medium is stored;
• and
• a piston of which a portion is movable back and forth by a brake pedal inside the cylinder, the piston configured to provide a reaction force corresponding to a pedal effort of the brake pedal while moving back and forth and discharge the pressing medium stored in the internal space of the cylinder toward the wheel cylinder,
• wherein the piston comprises:
• a push rod connected to the brake pedal;
• a first flange provided at an end to which the push rod is coupled;
• and
• a second flange provided at another end positioned inside the cylinder.