Transmission Arrangement For A Transmission Of A Vehicle Or The Like

Abstract

A transmission arrangement for a transmission of a vehicle or the like includes a dividing housing element configured to divide the transmission arrangement into at least one wet space and at least one dry space, at least one torsional damper for damping torsional vibrations, at least one disconnecting device for disconnecting the torque flow of a drive from a transmission input shaft of the transmission, and a mass damper device. The mass damper device is arranged in the torque flow between the secondary side of the at least one torsional damper and the primary side of the disconnecting device. At least one torsional damper is arranged in the dry space, and at least one disconnecting device is arranged in the wet space, and a connection device for an electric machine is arranged in radial direction above at least one of the devices in the same axial plane.

Claims

1.-20. (canceled)

21. A transmission arrangement for a transmission of a vehicle, comprising: a dividing housing element configured to divide the transmission arrangement into at least one wet space and at least one dry space; at least one torsional damper for damping torsional vibrations; at least one disconnecting device for disconnecting a torque flow of a drive from a transmission input shaft of the transmission; a mass damper device arranged in a torque flow between a secondary side of the at least one torsional damper and a primary side of the disconnecting device; the at least one torsional damper being arranged in the dry space, and the at least one disconnecting device being arranged in the wet space; and wherein a connection device for an electric machine is arranged and is operatively connected on a radial inner side to a radial outer side of at least one of the at least one disconnecting devices and the mass damper device in the same axial plane as the at least one disconnecting device and mass damper device.

22. The transmission arrangement according to claim 21, wherein the mass damper device is arranged in the dry space.

23. The transmission arrangement according to claim 21, wherein the mass damper device is configured to damp vibrations of at least one of a first order and a second order.

24. The transmission arrangement according to claim 21, wherein the mass damper device is connected on one side to the disconnecting device.

25. The transmission arrangement according to claim 21, wherein the torsional damper has a wobble-compensating connection element in a torque flow on a secondary side of the torsional damper.

26. The transmission arrangement according to claim 21, wherein the torsional damper has an added mass element in the torque flow on a secondary side of the torsional damper.

27. The transmission arrangement according to according to claim 21, wherein the torsional damper is constructed to compensate a radial offset between a driveshaft connected to a primary side of the torsional damper, and an input element of the disconnecting device.

28. The transmission arrangement according to claim 21, wherein the connection device is connected to a secondary side of the disconnecting device.

29. The transmission arrangement according to claim 21, wherein the disconnecting device is a clutch.

30. The transmission arrangement according to claim 29, wherein a secondary side of the clutch is formed by an outer plate carrier and a primary side is formed by an inner plate carrier.

31. The transmission arrangement according to claim 21, wherein a primary side element of the disconnecting device and the mass damper device are supported in the dividing housing element via a grooved ball bearing.

32. The transmission arrangement according to claim 21, wherein the dividing housing element is arranged so that the wet space forms an interior space of the transmission.

33. The transmission arrangement according to claim 21, wherein the mass damper device is arranged substantially in radial direction inside of a maximum radial extent of the torsional damper and substantially in the same axial plane.

34. A transmission arrangement for a transmission of a vehicle comprising: a dividing housing element configured to divide the transmission arrangement into at least one wet space and at least one dry space; at least one torsional damper for damping torsional vibrations; at least one disconnecting device for disconnecting a torque flow of a drive from a transmission input shaft of the transmission; the at least one torsional damper being arranged in the dry space and the at least one disconnecting device being arranged in the wet space, and a connection device for an electric machine is arranged in the wet space; and wherein the connection device extends in a radial direction and is arranged adjacent to the disconnecting device in an axial direction on a secondary side of the disconnecting device.

35. The transmission arrangement according to claim 34, wherein the torsional damper has a wobble-compensating connection element in a torque flow on a secondary side of the torsional damper.

36. The transmission arrangement according to claim 34, wherein the connection device is constructed in the form of a spur pinion, wherein at least one rotational axis of the spur pinion is arranged in a radial direction within the maximum radial extent of the disconnecting device.

37. The transmission arrangement according to claim 34, additionally comprising a pilot bearing in a shaft and wherein an input element of the disconnecting device is supported by the pilot bearing connected to a primary side of the torsional damper.

38. The transmission arrangement according to claim 34, wherein the dividing housing element is supported by a) a thrust sleeve and at least one sealing element or b) a thrust ring and a thrust bearing.

39. The transmission arrangement according to claim 34, wherein the disconnecting device comprises at least one actuating element, wherein a sealing element and/or a running surface of an actuating element are fastened to a primary side of the disconnecting device by laser welding.

40. The transmission arrangement according to claim 34, additionally comprising a hub having a radially inner side and radially outer side; and wherein a secondary side of the disconnecting device is connected via a rivet connection to the hub, and further comprising a spline for connecting to a transmission input shaft, the spline being arranged on the radial inner side and radial outer side of the hub.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Preferred constructions and an embodiment forms of the invention are shown in the drawings and are described more fully in the following description Like reference numerals designate like or similar or functionally like structural component parts or elements.

[0032] The drawings show schematically:

[0033] FIG. 1 a transmission arrangement according to an embodiment form of the present invention;

[0034] FIG. 2 a transmission arrangement according to an embodiment form of the present invention;

[0035] FIG. 3 a transmission arrangement according to an embodiment form of the present invention;

[0036] FIG. 4 a transmission arrangement according to an embodiment form of the present invention; and

[0037] FIG. 5 a transmission arrangement according to an embodiment form of the present invention.

DETAILED DESCRIPTION OF THE PRESENTLY PREFERRED EMBODIMENTS

[0038] FIG. 1 shows a transmission arrangement according to an embodiment form of the present invention.

[0039] FIG. 1 shows a transmission arrangement 1. Transmission arrangement 1 has a dividing housing element or an end shield 2 which divides transmission arrangement 1 into a dry space TR, shown on the left-hand side in FIG. 1, and a wet space NR, shown on the right-hand side in FIG. 1. A dual mass flywheel 3 which is connected to an input hub of a disconnecting device or disconnect clutch 4 is arranged in the dry space TR. The input hub of disconnect clutch 4 is further connected to an outer plate carrier 8. The input hub of disconnect clutch 4 is supported on the one hand in the crankshaft journal of the crankshaft 13 via a pilot bearing 22 and, on the other hand, is supported in the end shield 2 via a thrust bearing 15 in the form of a needle thrust bearing together with a thrust ring 14 and a radial shaft sealing ring. Disconnect clutch 4 comprises, in addition to outer plate carrier 8, a corresponding inner plate carrier 7 which is connected on its secondary side to a hub 18 via a rivet connection 17. The hub 18 has on the radially outer side a spline 19b to a gear wheel with running gear teeth and a further spline 19a to a transmission input shaft 5 in the radially inner area.

[0040] A connection device 10 in the form of a spur pinion which serves to connect an electric machine (not shown here) is arranged in axial direction and downstream of disconnect clutch 4 with respect to torque. To this end, two spur gears 25a, 25b are arranged in radial direction to cooperate with one another. The two spur gears 25a, 25b are connected to inner plate carrier 7 of disconnect clutch 4 via a rivet 17 for transmitting torque. For example, torque is transmitted by the first spur gear 25a which is supported substantially in radial direction at the level of the springs of dual mass flywheel 3 (reference numeral 21) on spur gear 25b which lies farther radially inward and which has running gear teeth. Finally, the torque is transmitted to transmission input shaft 5 via spline 19b and second spline 19a, mentioned above.

[0041] Overall, the torque flow 20 in FIG. 1 is as follows: proceeding from the driveshaft 9 in the form of a crankshaft 13, the torque is transmitted to the primary side of dual mass flywheel 3 via a crankshaft flange 23. On the secondary side, the torque is then transmitted from dual mass flywheel 3 to outer plate carrier 8 of disconnect clutch 4 and then to inner plate carrier 7 when disconnect clutch 4 is closed. Finally, inner plate carrier 7, as secondary side of disconnect clutch 4, transmits torque to transmission input shaft 5 via a rivet connection 17. Additionally or alternatively, the torque from the electric machine (not shown here) can be transmitted to the transmission input shaft 5 via spur pinion 10 and spline 19b and 19a.

[0042] FIG. 2 shows a transmission arrangement according to an embodiment form of the present invention.

[0043] FIG. 2 shows a transmission arrangement 1 comprising a dual mass flywheel 3 which is connected on its primary side to a driveshaft 9. Transmission arrangement 1 is divided by an end shield 2 into a dry space TR and a wet space NR. Dual mass flywheel 3 is arranged in dry space TR. The secondary side of dual mass flywheel 3 is operatively connected to an input element of a disconnect clutch 4. Disconnect clutch 4 comprises an inner plate carrier 7 on its primary side and an outer plate carrier 8 on the secondary side. A mass damper device 6 is arranged or fastened at one side to inner plate carrier 7 via a rivet connection 17. Mass damper device 6 and disconnect clutch 4 are arranged in wet space NR. Further, a portion of a connection device is arranged in the form of a chain 24 for an electric machine (not shown here). Chain 24 can also be any other transmission medium such as a toothed belt or a flat belt acting on outer plate carrier 8 of disconnect clutch 4. Outer plate carrier 8 is fixedly connected to transmission input shaft 5.

[0044] FIG. 3 shows a transmission arrangement according to an embodiment form of the present invention.

[0045] FIG. 3 shows an embodiment form substantially according to FIG. 2. In contrast to the embodiment form of FIG. 2, the mass damper device 6 in the embodiment example of FIG. 3 is configured to damp not only vibrations of the first order but also vibrations of the second order.

[0046] FIG. 4 shows a transmission arrangement according to an embodiment form of the present invention.

[0047] FIG. 4 shows an embodiment form substantially according to FIG. 3. In contrast to the embodiment form of FIG. 3, the mass damper device 6 in the embodiment form of FIG. 4 is arranged not at inner plate carrier 7 but rather at dual mass flywheel 3, more precisely, at the secondary side of dual mass flywheel 3. Dual mass flywheel 3 and mass damper device 6 are arranged in dry space TR, whereas chain 24 and disconnect clutch 4 are arranged in wet space NR.

[0048] FIG. 5 shows a transmission arrangement according to an embodiment form of the present invention.

[0049] FIG. 5 shows an embodiment form substantially according to FIG. 4. In contrast to the embodiment form of FIG. 4, the mass damper device 6 in the embodiment form of FIG. 5 is arranged in radial direction inside of dual mass flywheel 3. As in FIG. 4, mass damper device 6 and dual mass flywheel 3 are arranged in dry space TR.

[0050] In the embodiment forms of FIGS. 2-5, in contrast to the embodiment form of FIG. 1, the driveshaft, the input shaft, which is connected to inner plate carrier 7 of disconnect clutch 4, and the mass damper device 6 connected to the latter are supported in end shield 2 via a grooved ball bearing 11. Further, a radial shaft sealing ring can be arranged for sealing wet space NR, and one or more oil channels for lubrication and cooling thereof for centrifugal force compensating space and for clutch actuation.

[0051] To summarize, the invention in at least one of its embodiment forms makes possible or makes available the following, separately or in combination: [0052] 1. A transmission arrangement with a torsional damper in the dry space and a disconnect clutch for the electric machine in the wet space. The wet space can also be an interior space of the transmission. [0053] 2. The primary side of the torsional damper can be connected to the crankshaft, and the secondary side can be connected via a spline to an input hub of the disconnect clutch. The input hub of the disconnect clutch can receive an inner plate carrier, a mass damper device being arranged at the inner plate carrier or input hub so as to be pre-centered. [0054] 3. A disconnect clutch can separate an internal combustion engine from the transmission input shaft, for example. [0055] 4. A drive by means of an electric machine can act on a plate carrier, particularly on the outer plate carrier, of a disconnect clutch, via a chain or by means of any other transmission medium, for example, a toothed belt, flat belt or the like, and the corresponding plate carrier is then fixedly connected to the transmission input shaft. [0056] 5. The mass damper device can be adapted for first-order damping or second-order damping, for example, in order to take into account a cylinder deactivation of four to two cylinders. [0057] 6. Compact bearing support of the driveshaft, the input hub with plate carrier of the disconnect clutch and the mass damper device via a compact grooved ball bearing in an end shield. Further, a radial shaft sealing ring can be arranged for sealing the wet space, one or more oil channels for lubrication and cooling thereof for the centrifugal force compensating space and for clutch actuation or KO actuation. [0058] 7. Compensation of a radial offset between crankshaft and teeth of the input hub of the disconnect clutch by means of the torsional damper. [0059] 8. The torsional damper can have at its secondary side, particularly between the spring set and the teeth to the input hub of the disconnect clutch, a wobble-compensating connection 26 for reducing component stresses and, alternatively or additionally, an added mass 28 which helps to prevent teeth noise and possibly improves the decoupling quality of the torsional damper. [0060] 9. A compact disconnect clutch makes it possible to arrange a spur pinion adjacently in axial direction for connecting the electric machine to the transmission input shaft. An input hub of the disconnect clutch can be supported via a pilot bearing in the crankshaft journal of the crankshaft, for example, of an internal combustion engine. A compensation of radial offset in the torsional damper or a radial bearing support for the input hub in the end shield is not necessary. Instead, a radial shaft seal with thrust sleeve and O-ring or thrust ring and a thrust bearing can be arranged. [0061] 10. Piston seals and piston running surfaces of pistons of the disconnect clutch can be arranged by laser welding at outer plate carrier and the piston of the disconnect clutch. The inner plate carrier of the disconnect clutch can be connected via a rivet assembly to a hub part which has a spline on the radially outer side to a gear wheel with running teeth and a spline on the radially inner side to a transmission input shaft.

[0062] To summarize, the present invention, particularly at least one of the embodiment forms, offers the advantages of a sufficient decoupling of rotational irregularities, a compact installation space, so that the transmission arrangement can be arranged in a predetermined front transverse installation space in a neutral manner with respect to installation space, and a high flexibility with respect to adapting to different boundary constraints.

[0063] Although the present invention has been described in terms of preferred embodiment examples, it is not limited to these embodiment examples but rather can be modified in various ways.

[0064] Thus, while there have shown and described and pointed out fundamental novel features of the invention as applied to a preferred embodiment thereof, it will be understood that various omissions and substitutions and changes in the form and details of the devices illustrated, and in their operation, may be made by those skilled in the art without departing from the spirit of the invention. For example, it is expressly intended that all combinations of those elements and/or method steps which perform substantially the same function in substantially the same way to achieve the same results are within the scope of the invention. Moreover, it should be recognized that structures and/or elements and/or method steps shown and/or described in connection with any disclosed form or embodiment of the invention may be incorporated in any other disclosed or described or suggested form or embodiment as a general matter of design choice. It is the intention, therefore, to be limited only as indicated by the scope of the claims appended hereto.

REFERENCE CHARACTERS

[0065] 1 transmission arrangement [0066] 2 dividing housing element/end shield [0067] 3 dual mass flywheel [0068] 4 clutch/disconnecting device [0069] 5 transmission input shaft [0070] 6 mass damper device [0071] 7 inner plate carrier [0072] 8 outer plate carrier [0073] 9 driveshaft [0074] 10 spur pinion [0075] 11 grooved ball bearing [0076] 12 input hub clutch [0077] 13 crankshaft [0078] 14 thrust ring [0079] 15 thrust bearing [0080] 16 piston [0081] 17 rivet [0082] 18 hub [0083] 19a, 19b spline [0084] 20 torque flow [0085] 21 bearing support spur gear [0086] 22 pilot bearing [0087] 23 flange crankshaft [0088] 24 chain [0089] 25a, 25b spur gear [0090] NR wet space [0091] TR dry space