Drive arrangement

Abstract

Drive arrangement (1) with at least a first input element (3) and a first output element (2), with a friction clutch (9) with a counterplate (10) and a pressure plate (11) and with a clutch disc (12) arranged between the counterplate (10) and the pressure plate (11), wherein the one first output element (2) is connected to the counterplate (10) and the input element (3) is connected to the clutch disc (12), characterized in that a transmission device (14) made of axially resiliently arranged discs (15, 16) is provided between the output element (2) and the counterplate (10).

Description

The invention relates to a drive arrangement, in particular for the drive train of a motor vehicle.It is known in the prior art that internal combustion engines are used for driving motor vehicles, which engines can be connected to a downstream transmission by means of a clutch.Hybrid drives are also known in which an electric drive machine with a separating clutch is arranged in the drive train between the internal combustion engine and the transmission. Depending on the operating situation, either only the internal combustion engine or only the electric machine or both units can provide a drive torque in order to drive the motor vehicle.In this case, in particular when CVT transmissions or dual clutch transmissions are used, there is an offset of shafts or components on account of tolerances, with the result that increased component loading could occur.DE 101 49 704 A1 discloses a flexplate arrangement on the input side of a dual clutch.It is the object of the invention to provide a drive arrangement which has a simple structure and nevertheless brings about a reduced component load.The object of the invention is achieved with the features of claim 1.An exemplary embodiment of the invention relates to a drive arrangement having at least one first input element and one first output element, having a friction clutch with a pressure plate and a counterplate and having a clutch disk arranged between the pressure plate and counterplate, wherein the one first output element is connected to the counterplate and the input element is connected to the clutch disk, wherein a transmission device made of axially spring-mounted disks is provided between the output element and the counterplate. By arranging two disks, an axially soft drive arrangement can be provided which is however of sufficiently rigid design in the torque-transmitting direction.According to the invention, it is advantageous if two disks are provided, wherein the first disk is connected radially on the inside to the first output element and radially on the outside to a transmission element, wherein the second disk is connected radially on the outside to the transmission element and radially on the inside to the counterplate. This enables a two-stage arrangement with variably selectable flexibility in the axial direction, because the disks can be selected according to requirements.It is also advantageous if the transmission element is a ring element. As a result, the distance between the two disks can be influenced by the axial width of the ring element, which in turn has an effect on the flexibility and the permissible deflection of the disks.Furthermore, it is expedient if the first pane and / or the second pane are each formed from one pane element or from a plurality of pane elements as a pane package. This allows specific adaptation of the flexibility of the panes.It is furthermore advantageous here if the first disk and / or the second disk has a radially inner and a radially outer perforated ring for connection to the output element and / or to the m transmission element and / or to the counterplate. As a result, the panes can be connected easily and quickly, which simplifies the assembly.It is also advantageous if the first disk and / or the second disk has a radially inner and a radially outer perforated ring for connection to the input element and / or to the transmission element and / or to the counterplate, wherein the connection is effected by means of screws and / or rivet elements.It is likewise advantageous if the first disk and / or the second disk has windows between the radially inner and the radially outer perforated ring. This allows the weight of the disk to be reduced and the axial flexibility to be adjusted while maintaining the rigidity in the circumferential direction.It is also advantageous if an electric machine is also provided, which forms with its rotor a second input element, which can be connected to the pressure plate or the counter plate.According to the invention, it is furthermore advantageous if the transmission element is arranged radially outside the rotor of the electric machine.It is advantageous here if the transmission element is arranged axially adjacent to the rotor of the electric machine.The present invention is explained in more detail below with reference to preferred exemplary embodiments in conjunction with the associated figures:The following are shown: FIG. 1 is a schematic view of a drive arrangement; and FIG. 2 is a perspective view of the discs of the drive arrangement.FIG. 1 shows a drive arrangement 1 having at least one first input element 3 and one first output element 2. the first input element 3 is a shaft which can be connected, for example, to an internal combustion engine. The output element 2 is a shaft which can be connected, for example, to a downstream transmission. Furthermore, an electric machine 4 with a stator and a rotor 6 is provided, wherein the stator 5 is arranged fixed to the housing and the rotor is received radially on the inside via a bearing arrangement 7 rotatably mounted on a sleeve 8 fixed to the housing.Radially inside the rotor 6, a clutch 9 is provided with a counter plate 10 and a pressure plate 11. Between the pressure plate 11 and the counter plate 10 is received a clutch disc 12 which is connected to the input element 3 via the toothed plate 13.The clutch 9 is designed as a friction clutch. The control of the clutch 9 is advantageously effected hydraulically or electrically by an actuating unit which is integrated radially inside the rotor 6.Between the output element 2 and the counter plate 10 a transmission device 14 of axially spring mounted disks 15, 16 is provided.In this case, two disks 15, 16 are provided, wherein the first disk 15 is connected radially on the inside to the first output element 2 and is connected radially on the outside to a transmission element 17, and wherein the second disk 16 is connected radially on the outside to the transmission element 17 and is connected radially on the inside to the counter plate 10.It can also be seen in FIG. 1 that the electric machine 4 is provided in such a way that it forms with its rotor a second input element which can be connected to the counterplate 10 or the pressure plate 11.FIG. 2 shows the transmission device in an exploded view. The disk 15 has a radially outer perforated ring 18 and a radially inner perforated ring 19. These two perforated rings 18, 19 serve for the connection to the output element 2 or to the transmission element 17, respectively.The disk 16 has a radially outer perforated ring 23 and a radially inner perforated ring 24. These two perforated rings 23, 24 serve for the connection to the transmission element 17 or to the counter plate 10, respectively.The connection of the two disks 15, 16 to the transmission element 17 is effected by means of the connecting elements 27.As shown in Fig. 2, the transmission element 17 is an annular element which is also perforated for connection by means of the connection elements 27.According to the invention, the disks 15, 16 are designed as individual disks or as disk packs.The transmission element 17 is arranged radially outside the rotor 6 of the electric machine. The transmission element 17 is also arranged axially adjacent to the rotor 6 of the electric machine.FIG. 2 shows that the pane 15 and the pane 16 each have windows 28 between the respective perforated rings 18, 19, 23, 24.

Claims

Drive arrangement (1) having at least one first input element (3) and one first output element (2), having a friction clutch (9) with a counterplate (10) and a pressure plate (11) and having a clutch disc (12) arranged between counterplate (10) and pressure plate (11), wherein the one first output element (2) is connected to the counterplate (10) and the input element (3) is connected to the clutch disc (12), characterized in that a transmission device (14) comprising axially spring-mounted discs (15, 16) is provided between the output element (2) and the counterplate (10).Drive arrangement (1) according to Claim 1, characterized in that two discs (15, 16) are provided, the first disc (15) being connected radially on the inside to the first output element (2) and being connected radially on the outside to a transmission element (17), the second disc (16) being connected radially on the outside to the transmission element (17) and radially on the inside to the counterplate (10).Drive arrangement (1) according to Claim 2, characterized in that the transmission element (17) is an annular element.Drive arrangement (1) according to Claim 1, 2 or 3, characterized in that the first disc (15) and / or the second disc (16) are each formed from a disc element or from a plurality of disc elements as a disc pack.Drive arrangement (1) according to Claim 1, 2, 3 or 4, characterized in that the first disc (15) and / or the second disc (16) has a radially inner and a radially outer perforated ring (18, 19, 23, 24), for connection to the output element (2) and / or to the transmission element (17) and / or to the counter plate (10).Drive arrangement (1) according to one of the preceding claims, characterized in that the first disc (15) and / or the second disc (16) has a radially inner and a radially outer perforated ring (18, 19, 23, 24), for connection to the output element (2) and / or to the transmission element (17) and / or to the counter plate (10), wherein the connection is effected by means of screws and / or rivet elements.Drive arrangement (1) according to one of the preceding claims, characterized in that the first disc (15) and / or the second disc (16) has windows (28) between the radially inner and the radially outer perforated ring (18, 19, 23, 24).Drive arrangement (1) according to one of the preceding claims, characterized in that an electric machine (4) is furthermore provided, which forms with its rotor (6) a second input element (3) which can be connected to the pressure plate (11) or the counter plate (10).Drive arrangement (1) according to Claim 8, characterized in that the transmission element (17) is arranged radially outside the rotor (6) of the electric machine (4).Drive arrangement (1) according to Claim 8 or 9, characterized in that the transmission element (17) is arranged axially adjacent to the rotor (6) of the electric machine (4).

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