Drive device, in particular to drive a flap, comprising an actuator housing with an open cavity , wherein the actuator housing is connectable to one of a flap and a vehicle body, an actuator assembly enclosed at least in part by the actuator housing , wherein the actuator assembly comprises a spindle extending through the actuator housing and defining a spindle axis (S), wherein the spindle is connectable to the other one of the door and the vehicle body, and a spindle nut , wherein the spindle extends through and engages with the spindle nut , a drive assembly to drive the actuator assembly , a bearing assembly , which bearing assembly comprises a first bearing element which allows the spindle nut to rotate around a first rotation axis (X) and around a second rotation axis (Y), wherein the first rotation axis (X) and the second rotation axis (Y) are perpendicular to each other and the spindle axis (S), wherein a first end of the spindle nut is connected to the first bearing element and an outer surface of the first bearing element facing away from the spindle nut slidingly abuts against an inner wall of the open cavity , and a coupling assembly being mounted inside the actuator housing for coupling the drive assembly to the actuator assembly , wherein the coupling assembly comprises a first coupling element , wherein the coupling assembly is supported by the bearing assembly , characterised in that the coupling assembly has on an outer surface at least one projection , wherein the projection on the outer surface of the coupling assembly is coupled with a gear element being operatively connected to the drive assembly , and wherein the first coupling element is coupled to the gear element , and in that the coupling assembly comprises a second coupling element , wherein the first coupling element and the second coupling element surround a clutch assembly . an actuator housing with an open cavity , wherein the actuator housing is connectable to one of a flap and a vehicle body, an actuator assembly enclosed at least in part by the actuator housing , wherein the actuator assembly comprises a spindle extending through the actuator housing and defining a spindle axis (S), wherein the spindle is connectable to the other one of the door and the vehicle body, and a spindle nut , wherein the spindle extends through and engages with the spindle nut , a drive assembly to drive the actuator assembly , a bearing assembly , which bearing assembly comprises a first bearing element which allows the spindle nut to rotate around a first rotation axis (X) and around a second rotation axis (Y), wherein the first rotation axis (X) and the second rotation axis (Y) are perpendicular to each other and the spindle axis (S), wherein a first end of the spindle nut is connected to the first bearing element and an outer surface of the first bearing element facing away from the spindle nut slidingly abuts against an inner wall of the open cavity , and a coupling assembly being mounted inside the actuator housing for coupling the drive assembly to the actuator assembly , wherein the coupling assembly comprises a first coupling element , wherein the coupling assembly is supported by the bearing assembly , characterised in that the coupling assembly has on an outer surface at least one projection , wherein the projection on the outer surface of the coupling assembly is coupled with a gear element being operatively connected to the drive assembly , and wherein the first coupling element is coupled to the gear element , and in that the coupling assembly comprises a second coupling element , wherein the first coupling element and the second coupling element surround a clutch assembly . <EOS>