Torque transmission device

Abstract

Torque transmission device (10) for transmitting a torque between a drive element and a driven element, comprising a first coupling device (12) having a drive-side connected first coupling input element (14), a driven-side connected first coupling output element (16), a first friction device (18) for effecting a torque transmission between the first coupling input element (14) and the first coupling output element (16), and a first actuating element (20) for applying a first actuating force to the first friction device (18), further comprising a first restoring means (22) for effecting a first restoring force on the first actuating element (20), wherein a force application point (24) of the first restoring means (22) is arranged radially outside the first actuating element (20), wherein the first restoring means (22) has recesses (26),through which the first actuating element (20) extends, wherein an electric motor (28) is further provided, wherein the electric motor (20) has a stator (30) and a rotor (32) and the force application point (24) of the first restoring means (22) is arranged radially outside the inner diameter (34) of the rotor (32).

Description

[0001] The invention relates to a torque transmission device with the features of claim 1.

[0002] Torque transmission devices for transmitting a torque between a drive element and a driven element, comprising a first coupling device, having a first coupling input element connected on the drive side, a first coupling output element connected on the driven side, a first friction device for effecting a torque transmission between the first coupling input element and the first coupling output element, and a first actuating element for applying a first actuating force to the first friction device, further comprising a first restoring means for effecting a first restoring force on the first actuating element, are generally known.

[0003] Furthermore, reference is made to DE 10 2012 024 699 A1, which features a coupling arrangement with a dual clutch device for arrangement in a drive train of a motor vehicle between a drive unit and a transmission.

[0004] Furthermore, DE 10 2005 027 467 A1 discloses a rotating torque transmission device with a stationary piston and a rotatable engagement plate.

[0005] The object of the invention is to improve, in particular to reduce, the installation space requirement of such a torque transmission device, and in particular to enable a more axially compact design of the torque transmission device.

[0006] According to the invention, this problem is solved by a torque transmission device with the features according to claim 1.

[0007] Accordingly, a torque transmission device is proposed for transmitting a torque between a drive element and an output element, comprising a first coupling device, having a first coupling input element connected on the drive side, a first coupling output element connected on the output side, a first friction device for effecting a torque transmission between the first coupling input element and the first coupling output element, and a first actuating element for applying a first actuating force to the first friction device, further comprising a first restoring means for effecting a first restoring force on the first actuating element, wherein a force application point of the first restoring means is arranged radially outside the first actuating element.This can, in particular, reduce the installation space required for such a torque transmission device, and especially enable a more axially compact design of the torque transmission device.

[0008] An embodiment according to the invention is characterized in that the first restoring means has recesses through which the first actuating element passes.

[0009] An embodiment according to the invention is characterized in that an electric motor is further provided, in particular for effecting an additional and / or alternative torque transmission between the drive element and the driven element, wherein the electric motor has a stator and a rotor and the force application point of the first restoring means is arranged radially outside the inner diameter of the rotor.

[0010] Another special embodiment of the invention is characterized in that the first restoring means can be in operative contact with a support element at the point of force application and the support element is rotationally fixed relative to a rotor support element that receives the rotor.

[0011] An advantageous embodiment of the invention is characterized in that a further, second coupling device is provided, comprising a second coupling input element connected on the drive side, a second coupling output element connected on the output side, a second friction device for effecting a torque transmission between the second coupling input element and the second coupling output element, and a second actuating element for applying a second actuating force to the second friction device, further comprising a second restoring means for effecting a second restoring force on the second actuating element.

[0012] A preferred particular embodiment of the invention is characterized in that the force application point of the first restoring means is arranged radially outside a force application point of the second restoring means.

[0013] Another special embodiment of the invention is characterized by the fact that the first and second restoring means are arranged radially overlapping.

[0014] A preferred particular embodiment of the invention is characterized in that the first friction device is arranged axially next to the second friction device and the first actuating element extends through the second friction device and / or axially overlaps the second friction device.

[0015] A particularly preferred embodiment of the invention is characterized in that the first restoring means can be in operative contact with a support element at the force application point and the support element is rotationally fixed relative to the first and / or second coupling input element.

[0016] A particularly special embodiment of the invention is characterized in that the support element centers the second actuating element. Further advantages and advantageous configurations of the invention will become apparent from the description and the illustrations. Character description

[0017] The invention is described in detail below with reference to the illustrations. These show, in detail: Fig. 1: A half section of a cross-section through a torque transmission device in a special embodiment of the invention. Fig. 2: A section of the torque transmission device from Fig. 1. Fig. 3: A spatial representation of the torque transmission device made of Fig. 1. Fig. 4: A spatial representation of the torque transmission device made of Fig. 1. Fig. 5: A top view of the torque transmission device made of Fig. 1.

[0018] The Fig. 1, Fig. 2, Fig. 3, Fig. 4 to Fig. Figures 5 each show different representations of a torque transmission device 10 in a specific embodiment of the invention. The following description applies to the Fig. 1, Fig. 2, Fig. 3, Fig. 4 to Fig. 5.

[0019] The torque transmission device 10 is designed to transmit torque between a drive element, for example an internal combustion engine or an electric motor, and an output element, for example a transmission, particularly in the drive train of a motor vehicle. The torque transmission device 10 comprises a first clutch assembly 12, having a first clutch input element 14 connected on the drive side, a first clutch output element 16 connected on the output side, a first friction device 18 for effecting torque transmission between the first clutch input element 14 and the first clutch output element 16, and a first actuating element 20 for applying a first actuating force to the first friction device 12.

[0020] Furthermore, a first restoring means 22 is provided to exert a first restoring force on the first actuating element 20, wherein a force application point 24 of the first restoring means 22 is arranged radially outside the first actuating element 20. This allows, in particular, the installation space requirement of such a torque transmission device 10 to be reduced, and especially enables a more axially compact design of the torque transmission device 10.

[0021] The first restoring element 22 is designed, in particular, as a disc spring. The first restoring element 22 has recesses 26 through which the first actuating element 20 passes. The actuating element 20 can also be designed in multiple parts.

[0022] Furthermore, an electric motor 28 is provided, in particular to effect an additional and / or alternative torque transmission between the drive element and the output element, wherein the electric motor 28 has a stator 30 and a rotor 32 and the force introduction point 24 of the first restoring means 22 is arranged radially outside the inner diameter 34 of the rotor 32.

[0023] Furthermore, the first restoring element 22 is in operative contact with a support element 36 at the force application point 24. The support element 36 is rotationally fixed, in particular, relative to a rotor support element 38 that accommodates the rotor 30. At a second force application point 60 of the first restoring element 22, it is in operative contact with the first actuating element 20. The second force application point 60 lies radially within an outer circumference 62 of the first actuating element 20.

[0024] The torque transmission device has a further, second coupling device 40, comprising a second coupling input element 42 connected on the drive side, a second coupling output element 44 connected on the output side, a second friction device 46 for effecting a torque transmission between the second coupling input element 42 and the second coupling output element 44, and a second actuating element 48 for applying a second actuating force to the second friction device 46, further comprising second restoring means 50 for effecting a second restoring force on the second actuating element 48.

[0025] The force application point 24 of the first restoring element 22 lies radially outside the force application point 52 of the second restoring element 50. Furthermore, the first and second restoring elements 22, 50 are arranged radially overlapping. In particular, the force application point 52 of the second restoring element 50 is also radially outside the first actuating element 20. The second restoring element 50 has a further force application point 64, via which the second restoring element 50 is in operative contact with the second actuating element 48.

[0026] The first friction device 12 is arranged axially next to the second friction device 46 and the first actuating element 20 passes through the second friction device 46 and overlaps the second friction device 46 axially.

[0027] The support element 36 is rotationally fixed relative to the first and second clutch input elements 14, 42. The support element 36 centers the second actuating element 48.

[0028] In particular, a K0 coupling 54, preferably radially within the first coupling device 12, is provided for separating the drive element from the rotor 32. The coupling output 56 of the K0 coupling 54 is rotationally fixed to the rotor carrier 38 or is integrally formed with it.

Claims

[1] Torque transmission device (10) for transmitting a torque between a drive element and a driven element, comprising a first coupling device (12) having a first coupling input element (14) connected on the drive side, a first coupling output element (16) connected on the driven side, a first friction device (18) for effecting a torque transmission between the first coupling input element (14) and the first coupling output element (16), and a first actuating element (20) for applying a first actuating force to the first friction device (18), further comprising a first restoring means (22) for effecting a first restoring force on the first actuating element (20), wherein a force application point (24) of the first restoring means (22) is arranged radially outside the first actuating element (20), wherein the first restoring means (22) has recesses (26),through which the first actuating element (20) extends, wherein an electric motor (28) is further provided, wherein the electric motor (20) has a stator (30) and a rotor (32) and the force application point (24) of the first restoring means (22) is arranged radially outside the inner diameter (34) of the rotor (32). [2] Torque transmission device (10) according to claim 1, wherein the first restoring means (22) can be in operative contact with a support element (36) at the force application point (24) and the support element (36) is rotationally fixed relative to a rotor support element (38) receiving the rotor (32). [3] Torque transmission device (10) according to one of the preceding claims, wherein a further, second coupling device (40) is provided, comprising a second coupling input element (42) connected on the drive side, a second coupling output element (44) connected on the output side, a second friction device (46) for effecting a torque transmission between the second coupling input element (42) and the second coupling output element (44), and a second actuating element (48) for applying a second actuating force to the second friction device (46), further comprising a second restoring means (50) for effecting a second restoring force on the second actuating element (48). [4] Torque transmission device (10) according to claim 3, wherein the force application point (24) of the first restoring means (22) is arranged radially outside a force application point (52) of the second restoring means (50). [5] Torque transmission device (10) according to claim 3 or 4, wherein the first and second restoring means (22, 50) are arranged radially overlapping. [6] Torque transmission device (10) according to one of claims 3 to 5, wherein the first friction device (18) is arranged axially next to the second friction device (46) and the first actuating element (20) extends through the second friction device (46) and / or axially overlaps the second friction device (46). [7] Torque transmission device (10) according to one of claims 3 to 6, wherein the first restoring means (22) can be in operative contact with a support element (36) at the force application point (24) and the support element (36) is rotationally fixed relative to the first and / or second clutch input element (14,42). [8] Torque transmission device (10) according to one of claims 3 to 7, wherein the support element causes the second actuating element to be centered.

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