ACTIVE AIR FLAP FOR VEHICLES

Disclosed herein is an active air flap for vehicles, which includes a frame unit having a hollow structure configured to communicate with an outside air inlet of a radiator grill, a flap part connected to the frame unit, and including a flap unit configured to open and close the outside air inlet and a fixing protrusion protruding from both ends of the flap unit, a drive unit configured to provide a driving force to the flap part, a link unit disposed between the flap part and the drive unit to transmit the driving force of the drive unit to the flap part, and a fixing unit configured to restrain the movement of the flap unit closing the outside air inlet on an opening/closing path of the flap unit to prevent the flap part from being pushed or twisted by an external force, wherein the frame unit includes a first guide groove having a straight section and a curved section configured as a single path to guide the opening/closing path of the flap unit, and a second guide groove having a stepped portion spaced from the first guide groove to guide a straight path of the flap unit.