CLUTCH UNIT FOR A POWERTRAIN WITH AN INTERLOCKING CLUTCH, AND HYBRID MODULE WITH A CLUTCH UNIT ACTING AS A DISCONNECT CLUTCH

Abstract

A clutch unit for a powertrain of a motor vehicle comprises a torque input component which acts as a drive element and a torque output component which acts as an output element. The torque input component can be connected to the torque output component in torque-transmissive fashion via an engageable clutch. The clutch has a translationally movable clutch element configured and arranged such that in an actuation position, the clutch element allows a torque to be transmitted from the torque input component to the torque output component via an interlocking engagement.

Claims

1. A clutch unit for a powertrain of a motor vehicle, comprising a torque input components which acts as a drive element and a torque output component which acts as an output element, wherein the torque input component can be connected to the torque output component in torque-transmissive fashion via an engageable clutch, wherein the clutch has a translationally movable clutch element configured and arranged such that in an actuation position, the clutch element allows a torque to be transmitted from the torque input component to the torque output component via an interlocking engagement.

2. The clutch unit as claimed in claim 1, wherein an electric motor is provided for translational movement of the clutch element.

3. The clutch unit as claimed in claim 2, wherein the electric motor is formed as a linear motor.

4. The clutch unit as claimed in claim 1, wherein the torque input component and the torque output component are configured and matched to each other such that a rotational speed of the torque input component and a rotational speed of the torque output component can be synchronized.

5. The clutch unit as claimed in claim 1, wherein the clutch element is configured as a sliding sleeve.

6. The clutch unit as claimed in claim 1, wherein the torque input component and the torque output component are arranged coaxially.

7. The clutch unit as claimed in claim 1, wherein the clutch element has a toothing, and the torque input component and the torque output component each have a counter-toothing, wherein the counter-toothing transmits a torque when engaged with the toothing of the clutch element.

8. The clutch unit as claimed in claim 1, wherein a lock is provided for axial positioning of the clutch element in the actuation position and/or a decoupling position.

9. The clutch unit as claimed in claim 1, wherein a stop is provided for limiting an axial movement of the clutch element.

10. A hybrid module comprising a first drive machine which is permanently connected in torque-transmissive fashion to a transmission input shaft, and a second drive machine which can be engageably connected in torque-transmissive fashion to the transmission input shaft and/or an output shaft of the first drive machine via a clutch unit as claimed in claim 1.

11. A clutch assembly for a hybrid module, comprising: a torque input component; a torque output component; and a clutch configured to selectively connect the torque input component with the torque output component for torque transmission therebetween, the clutch including a sliding sleeve movable between an actuation position and a decoupled position, wherein, in the actuation position: a first toothing formed on a radial inside of the sliding sleeve is engaged with a second toothing formed on an outside of the torque input component such that torque is transmitted from the torque input component to the sliding sleeve; and a third toothing formed on an outside of the torque output component is engaged with the first toothing such that torque is transmitted from the sliding sleeve to the torque output component.

12. The clutch assembly as claimed in claim 11, wherein, in the decoupled position, the first toothing is only in engagement with the third toothing such that no torque is transmitted between the torque input component and the sliding sleeve of the clutch.

13. The clutch assembly as claimed in claim 11, wherein the sliding sleeve is moved into the actuating position in response to a first rotational speed of the torque input component corresponding to a second rotational speed of the torque output component.

14. The clutch assembly as claimed in claim 11, wherein: the first toothing includes a first chamfer formed on a side facing the torque input component in an axial direction; the second toothing includes a second chamfer formed on a side facing the torque output component; and the first chamfer corresponds in angle and size to the second chamfer.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The figures are explained below with reference to drawings. The drawings show:

[0027] FIG. 1 a diagrammatic, longitudinal sectional depiction of a clutch unit according to the disclosure in a decoupling position in which no torque is transmitted, and

[0028] FIG. 2 a diagrammatic, longitudinal sectional depiction of the clutch unit in an actuating position in which torque is transmitted.

DETAILED DESCRIPTION

[0029] The figures are purely diagrammatic and serve exclusively to explain the disclosure. The same elements carry the same reference signs.

[0030] FIG. 1 shows a clutch unit 1 according to the disclosure for a powertrain of a motor vehicle. The clutch unit 1 has a torque input component 2 which acts as a drive element, for example of a drive machine (not shown). The clutch unit 1 also has a torque output component 3 which acts as an output element and for example is a transmission input shaft or an output shaft of a second drive machine. The torque input component 2 can be connected in torque-transmissive fashion to the torque output component 3 via an engageable clutch/disconnect clutch 4.

[0031] The clutch 4 has a clutch element 5 which can be moved by translational displacement into an actuating position or decoupling position. In the actuating position, the torque is transmitted from the torque input component 2 to the clutch element 5 via an interlocking connection, and from there to the torque output component 4 via an interlocking connection. Thus the clutch 4 is closed when the clutch element 5 is in an actuating position. In the decoupling position, the interlocking connection between the clutch element 5 and the torque input component 2 is released so that no torque is transmitted.

[0032] The translational displacement of the clutch element 5 is achieved by an electric motor 6 configured as a linear motor 7. On operation of the electric motor 6, the magnetic fields of a stator 8 and rotor 9 of the electric motor 6 act on each other such that the rotor 9 is moved translationally in the axial direction relative to the stator 8. The clutch element 5 is fixedly connected to the rotor 9 so that, in operation of the electric motor 6, the clutch element 5 is moved in the axial direction together with the rotor 9. The stator 8 is connected fixedly to a stationary housing 11 via a stator carrier 10.

[0033] The rotor 9 is arranged radially outside the clutch element 5 and coaxially to the clutch element 5, the torque input component 2 and/or the torque output component 3. The stator 8 is arranged coaxially to and radially outside the rotor 9.

[0034] The clutch element 5 is configured as a sliding sleeve 12 in annular form. The torque input component 2 has an external toothing 13 which is formed as a straight toothing, transmitting torque in the circumferential direction with a slight play. The clutch element 5 has an internal toothing 14 which is formed on a radial inside of the clutch element 5 as a straight toothing, transmitting torque in the circumferential direction with slight play, and on cooperation with the external toothing 13 of the torque input component 2, transmits torque from the torque input component 2 to the clutch element 5. The torque output component 3 has an external toothing 15 which is formed as a straight toothing, transmitting torque in the circumferential direction with slight play, and on cooperation with the internal toothing 14 of the clutch element 5, transmits torque from the clutch element 5 to the torque output component 3.

[0035] When the clutch element 5 is in the decoupling position, it is in toothed engagement only with the torque output component 3. The axial movement of the clutch element 5 into the actuating position moves the internal toothing 14 into the external toothing 13, so that the clutch element 5 is engaged with both the torque output component 3 and with the torque input component 2. The clutch element 5 can thus be pushed into the external toothing 14 only when the rotational speed of the torque input component 2 corresponds to the rotational speed of the clutch element 5, i.e. the rotational speed of the torque output component 3. In the actuating position, the internal toothing 14 is in toothed engagement with the external toothing 13 over the entire toothing length of the external toothing 13. In the decoupling position, the internal toothing 14 is in toothed engagement with the external toothing 15 over the entire toothing length of the torque output component 3.

[0036] The clutch unit 1 comprises a lock 16 which serves for axial positioning of the clutch element 5 relative to the torque output component 3 and hence to the torque input component 2. The lock 16 is formed by two detents 17 on the radial inside of the clutch element 5, and by a ball 18. The ball 18 is preloaded in the radial direction via a spring 19 and attached to the torque output component 3. The detents 17 are arranged in the clutch element 5 so that the clutch element 5 is either in the actuating position or in the decoupling position when the ball 18 lies in the first detent 17 or the second detent 17. The detents 17 have a triangular cross section so that an axial shift of the clutch element 5 guides the ball 18 out of the detents 17.

[0037] A stop 20 is formed on the clutch element 5 and lies with an axial side on the torque input component 2 when the clutch element 5 is in the actuating position, or with the other axial side on the torque output component 3 when the clutch element 5 is in the decoupling position. The stop 20 is formed as a ring component which protrudes radially inwardly from the clutch element 5 beyond the internal toothing 14.

[0038] The torque output component 3 is attached to a hollow shaft 21 via a shaft-hub connection 22. The torque is transmitted for example to a transmission input shaft or an output shaft of a drive machine via the hollow shaft 21. The torque output component 3 may also be formed integrally with the hollow shaft 21.

[0039] The hollow shaft 21 is mounted in the housing 11 via a first roller bearing 23, and on or in the torque input component 2 via a second roller bearing 24. The torque output component 2 is thus also mounted in the housing 11 via the first roller bearing 23, and on or in the torque input component 2 via the second roller bearing 24.

[0040] The external toothing 13 has a chamfer 25 on a side facing the torque output component 3 in the axial direction. The internal toothing 14 also has a chamfer 26, which corresponds in angle and size to the chamfer 25, on the side facing the torque input component 2 in the axial direction.

LIST OF REFERENCE NUMBERS

[0041] 1 Clutch unit

[0042] 2 Torque input component

[0043] 3 Torque output component

[0044] 4 Clutch

[0045] 5 Clutch element

[0046] 6 Electric motor

[0047] 7 Linear motor

[0048] 8 Stator

[0049] 9 Rotor

[0050] 10 Stator carrier

[0051] 11 Housing

[0052] 12 Sliding sleeve

[0053] 13 Input external toothing

[0054] 14 Internal toothing

[0055] 15 Output external toothing

[0056] 16 Lock

[0057] 17 Detent

[0058] 18 Ball

[0059] 19 Spring

[0060] 20 Stop

[0061] 21 Hollow shaft

[0062] 22 Shaft-hub connection

[0063] 23 First roller bearing

[0064] 24 Second roller bearing

[0065] 25 Chamfer

[0066] 26 Chamfer