Device for actuating two pivotable flaps

The device has a swing arm (6) coupled with a drive shaft in a rotationally fixed manner and coupled with an axle lever (9) by a sliding block element (10) that is guided in a sliding block guide (11). The axle lever is connected with a recirculating air flap (1) in a rotationally fixed manner, and the sliding block guide has a sliding block guide section running around a rotational axis of the drive shaft. Another curved sliding block guide section is attached to the former guide section at a break point. Independent claims are also included for the following: (1) a heating-, ventilation- and air-conditioning system comprising a device for actuating flaps (2) a vehicle comprising a heating-, ventilation- and air-conditioning system (3) a method for actuating flaps.