Door drive device for electromotively adjusting a vehicle door
A door drive device for electromotively adjusting a vehicle door comprises an electric motor, a transmission which includes a first gear stage to be driven by the electric motor and a second gear stage operatively connected to the first gear stage, and an output element operatively connected to the second gear stage for outputting an adjusting force for adjusting the vehicle door. The first gear stage includes a first housing part. The second gear stage includes a planetary transmission to be driven by the first gear stage and a second housing part forming a ring gear toothing of the planetary transmission. The transmission includes an intermediate element which is arranged between the first housing part and the second housing part and connects the first housing part and the second housing part with each other in a torque-resistant manner.
1 . A door drive device for electromotively adjusting a vehicle door, comprising
an electric motor,
a transmission which includes a first gear stage to be driven by the electric motor and a second gear stage operatively connected to the first gear stage, and
an output element operatively connected to the second gear stage for outputting an adjusting force for adjusting the vehicle door,
wherein the first gear stage includes a first housing part,
wherein the second gear stage includes a planetary transmission to be driven by the first gear stage and a second housing part forming a ring gear toothing of the planetary transmission,
wherein the transmission includes an intermediate element which is arranged between the first housing part and the second housing part and connects the first housing part and the second housing part with each other in a torque-resistant manner.
2 . The door drive device according to claim 1 , wherein the first gear stage includes a drive gear rotatable relative to the first housing part and an axle element connected to the drive gear.
3 . The door drive device according to claim 2 , wherein the intermediate element rotatably supports the axle element.
4 . The door drive device according to claim 2 , wherein the transmission includes a bearing which rotatably supports the axle element, wherein the intermediate element forms a bearing seat on which the bearing is arranged.
5 . The door drive device according to claim 4 , wherein the bearing seat is formed by a plurality of rib portions and radially set-back portions arranged along a circumferential direction in alternation with the rib portions.
6 . The door drive device according to claim 5 , wherein on at least some of the rib portions stop elements are arranged for axially limiting the bearing seat.
7 . The door drive device according to claim 4 , wherein the bearing is fixed in the bearing seat by a fixing element arranged on the intermediate element.
8 . The door drive device according to claim 2 , wherein the first gear stage includes a drive worm to be driven by the electric motor, which meshes with the drive gear.
9 . The door drive device according to claim 8 , wherein the drive worm can be rotated relative to the first housing part about a first longitudinal axis and the drive gear can be rotated relative to the first housing part about a second longitudinal axis directed perpendicularly to the first longitudinal axis.
10 . The door drive device according to claim 2 , wherein the axle element includes a toothing which meshes with planetary gears of the second gear stage.
11 . The door drive device according to claim 1 , wherein the second gear stage includes an arrangement of first planetary gears rotatably arranged on a first planetary gear carrier and meshing with the ring gear toothing and an arrangement of second planetary gears rotatably arranged on a second planetary gear carrier and meshing with the ring gear toothing.
12 . The door drive device according to claim 11 , wherein the second planetary gear carrier is connected to the output element in such a way that the output element is rotated on rotation of the second planetary gear carrier relative to the second housing part.
13 . The door drive device according to claim 1 , wherein the intermediate element includes a first engagement portion which engages into an opening of at least one of the first housing part and a second engagement portion which engages into an opening of the second housing part.
14 . The door drive device according to claim 13 , wherein at least one of the first engagement portion and/or the second engagement portion is formed by a cylindrical collar portion.
15 . The door drive device according to claim 13 , wherein the intermediate element is sealed in a moisture-tight way at least one of on the first engagement portion relative to the first housing part and on the second engagement portion relative to the second housing part.
16 . The door drive device according to claim 15 , wherein at least one of the first engagement portion includes a first centering portion for the centering abutment against the first housing part and a first sealing portion at least one of axially and radially spaced apart from the first centering portion for sealing relative to the first housing part and the second engagement portion includes a second centering portion for the centering abutment against the second housing part and a second sealing portion at least one of axially and radially spaced apart from the second centering portion for sealing relative to the second housing part.
17 . The door drive device according to claim 13 , wherein the intermediate element includes a flange portion circumferentially extended on the intermediate element, which radially protrudes relative to at least one of the first engagement portion and/or the second engagement portion.
18 . The door drive device according to claim 17 , wherein the first housing part is arranged on a first side of the flange portion and the second housing part is arranged on a second side of the flange portion facing away from the first side.
19 . The door drive device according to claim 1 , wherein the intermediate element includes at least one first form-fitting portion for fixing the intermediate element to the first housing part in a torque-resistant manner.
20 . The door drive device according to claim 1 , wherein the intermediate element includes at least one second form-fitting portion for fixing the intermediate element to the second housing part in a torque-resistant manner.