Granted Patent B2

US 12,638,056 · App. 18/569,251 · Granted May 26, 2026

Inventor: Stephan Maienschein (Baden-Baden, DE)

Assignee: Schaeffler Technologies AG & Co. KG

F16D3/12B60K6/40B60K6/442B60Y2200/92

Abstract

Claims (91)

1 . A torque transmission device for a drive train of a motor vehicle, comprising:

a rotor carrier mounted rotatably about an axis of rotation;

an input hub;

an output hub; and

a torsion damper;

wherein the rotor carrier includes a fastening portion extending in an axial direction radially outwardly with respect to the input hub and a first flange portion extending in a radial direction;

wherein the fastening portion and the input hub are arranged on a first axial side of the first flange portion and are connected to the first flange portion;

wherein the torsion damper has an energy storage element and a damper output part, which has a second flange portion extending in the radial direction and an actuating portion extending in the axial direction and being operatively connected to the energy storage element;

wherein, radially on the inside, the second flange portion is connected in a torque-transmitting manner to the output hub and, radially on the outside, to the actuating portion;

wherein the second flange portion is axially arranged between a second axial side of the first flange portion, facing away from the first axial side, and the output hub;

wherein the first flange portion has a through-opening which extends in the axial direction and through which the actuating portion passes.

2 . The torque transmission device 4 , according to claim 1 ,

wherein the torsion damper has a damper input part having a third flange portion, extending in the radial direction and a coupling portion extending in the axial direction along the axis of rotation and being connected to the third flange portion;

wherein the third flange portion is arranged on the first axial side and is connected to the first flange portion;

wherein the coupling portion extends away from the first axial side and is operatively connected to the energy storage element;

wherein the coupling portion is arranged radially on the inside with respect to the actuating portion;

wherein the first flange portion of the rotor carrier is rotatable relative to the actuating portion against action of the energy storage element by a torque introduced into the torque transmission device via the input hub.

3 . The torque transmission device according to claim 2 ,

wherein the torsion damper includes a further energy storage element;

wherein the energy storage element is arranged spaced apart from the further energy storage element in a circumferential direction;

wherein the actuating portion is arranged in the circumferential direction between the energy storage element and the further energy storage element and is operatively connected to the energy storage element and the further energy storage elements.

4 . The torque transmission device according to claim 2 , wherein the actuating portion is arranged radially between the fastening portion and the coupling portion.

5 . The torque transmission device according to claim 1 ,

wherein the through-opening is formed partially annular and extends in a circumferential direction with respect to the axis of rotation over a first angular segment (α),

wherein the actuating portion extends in the circumferential direction with respect to the axis of rotation over a second angular segment (β),

wherein the second angular segment (β) is smaller than the first angular segment (α).

6 . The torque transmission device according to claim 1 , wherein the first flange portion is arranged in a substantially disc-shaped manner extending in a plane of rotation with respect to the axis of rotation.

7 . The torque transmission device according to claim 1 , further comprising

a bearing cover and a bearing arrangement;

wherein the bearing cover has a bearing portion extending in the axial direction;

wherein, radially between the input hub and the bearing portion, the bearing arrangement is arranged for supporting the input hub on the bearing portion;

wherein the bearing portion extends in the axial direction away from the first axial side and has an axial overlap with at least one of the torsion damper and the fastening portion.

8 . The torque transmission device according to claim 7 ,

wherein the bearing cover has a cover portion extending in the radial direction, which is radially outwardly adjacent to the bearing portion;

wherein the cover portion extends radially outwardly from the bearing portion;

wherein the torsion damper is arranged axially between the first axial side and the cover portion.

9 . The torque transmission device according to claim 1 ,

wherein the input hub has, on a side facing the output hub, a first centering shoulder having a first centering surface arranged on an outer circumferential side of the first centering shoulder;

wherein the output hub has a second centering shoulder with a second centering surface on an inner circumferential side thereof;

wherein the first centering shoulder engages the second centering shoulder;

wherein the first centering surface and the second centering surface are designed to align the output hub with respect to the input hub in the radial direction.

10 . A drive train for a motor vehicle,

comprising a torque transmission device, an internal combustion engine, and an electric machine having a rotor and a stator,

wherein the torque transmission device includes:

a rotor carrier mounted rotatably about an axis of rotation, an input hub, an output hub, a torsion damper;

wherein the rotor carrier includes a fastening portion extending in an axial direction radially outwardly with respect to the input hub and a first flange portion extending in a radial direction;

wherein the fastening portion and the input hub are arranged on a first axial side of the first flange portion and are connected to the first flange portion;

wherein the torsion damper has an energy storage element and a damper output part, which has a second flange portion extending in the radial direction and an actuating portion extending in the axial direction and being operatively connected to the energy storage element;

wherein, radially on the inside, the second flange portion is connected in a torque-transmitting manner to the output hub and, radially on the outside, to the actuating portion;

wherein the second flange portion is axially arranged between a second axial side of the first flange portion, facing away from the first axial side and the output hub;

wherein the first flange portion has a through-opening which extends in the axial direction and through which the actuating portion passes;

wherein a crankshaft of the internal combustion engine is connected in a torque-transmitting manner to the input hub;

wherein the stator is arranged radially outwardly with respect to the rotor;

wherein the rotor is arranged and fastened on the fastening portion; radially on the outside of the fastening portion;

wherein the torsion damper is connected in a torque-transmitting manner to the input hub and is configured to at least partially cancel out a rotational irregularity originating from the internal combustion engine between the input hub and the output hub.

11 . The drive train according to claim 10 ,

wherein the rotor has an end face extending in a plane of rotation and facing the internal combustion engine;

wherein the end face and the fastening portion terminate in a flush manner.

12 . The drive train according to claim 10 ,

wherein the torsion damper has a damper input part having a third flange portion extending in the radial direction and a coupling portion extending in the axial direction along the axis of rotation and being connected to the third flange portion;

wherein the third flange portion is arranged on the first axial side and is connected to the first flange portion;

wherein the coupling portion extends away from the first axial side and is operatively connected to the energy storage element;

wherein the coupling portion is arranged radially on the inside with respect to the actuating portion;

wherein the first flange portion of the rotor carrier is rotatable relative to the actuating portion against action of the energy storage element by a torque introduced into the torque transmission device via the input hub.

13 . The drive train according to claim 12 ,

wherein the torsion damper includes a further energy storage element;

wherein the energy storage element is arranged spaced apart from the further energy storage element in a circumferential direction;

wherein the actuating portion is arranged in the circumferential direction between the energy storage element and the further energy storage element and is operatively connected to the energy storage element and the further energy storage element.

14 . The drive train according to claim 12 , wherein the actuating portion is arranged radially between the fastening portion and the coupling portion.

15 . The drive train according to claim 10 ,

wherein the through-opening is formed partially annular and extends in a circumferential direction with respect to the axis of rotation over a first angular segment (α),

wherein the actuating portion extends in the circumferential direction with respect to the axis of rotation over a second angular segment (β),

wherein the second angular segment (β) is smaller than the first angular segment (α).

16 . The drive train according to claim 10 , wherein the first flange portion is arranged in a substantially disc-shaped manner extending in a plane of rotation with respect to the axis of rotation.

17 . The drive train according to claim 10 , further comprising

a bearing cover and a bearing arrangement;

wherein the bearing cover has a bearing portion extending in the axial direction;

wherein, radially between the input hub and the bearing portion, the bearing arrangement is arranged for supporting the input hub on the bearing portion;

wherein the bearing portion extends in the axial direction away from the first axial side and has an axial overlap with at least one of the torsion damper and the fastening portion.

18 . The drive train according to claim 17 ,

wherein the bearing cover has a cover portion extending in the radial direction, which is radially outwardly adjacent to the bearing portion;

wherein the cover portion extends radially outwardly from the bearing portion;

wherein the torsion damper is arranged axially between the first axial side and the cover portion.

19 . The drive train according to claim 18 ,

wherein the internal combustion engine includes a motor housing defining the axis of rotation;

wherein, radially on the outside, the bearing cover is non-rotatably connected to the motor housing.

20 . The drive train according to claim 10 ,

wherein the input hub has, on a side facing the output hub, a first centering shoulder having a first centering surface arranged on an outer circumferential side of the first centering shoulder;

wherein the output hub has a second centering shoulder with a second centering surface on an inner circumferential side thereof;

wherein the first centering shoulder engages the second centering shoulder;

wherein the first centering surface and the second centering surface are designed to align the output hub with respect to the input hub in the radial direction.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (27)