Hybrid module
11267331 · 2022-03-08
Assignee
Inventors
Cpc classification
B60K6/387
PERFORMING OPERATIONS; TRANSPORTING
B60K2006/4825
PERFORMING OPERATIONS; TRANSPORTING
F16D2021/0692
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16D13/52
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16D13/385
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16D25/082
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16D2300/12
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16D25/10
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16D21/08
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16D2021/0661
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16D13/70
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
International classification
B60K6/387
PERFORMING OPERATIONS; TRANSPORTING
F16D13/52
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16D13/38
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16D21/08
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16D13/70
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Abstract
A hybrid module for a powertrain of a motor vehicle includes an electric machine, a clutch device, and a frictionally-engaging separating clutch. The separating clutch is arranged between a dual-mass flywheel and an intermediate shaft. The separating clutch includes a counter-plate, an outer lamella carrier rigidly connected to the counter-plate, a pressure plate, axially movable relative to the outer lamella carrier, an intermediate plate, axially movable relative to the outer lamella carrier, a first clutch disk, axially movable and extending between the pressure plate and the intermediate plate, and a second clutch disk, axially movable and extending between the counter-plate and the intermediate plate. The pressure plate or the intermediate plate is connected to the outer lamella carrier for conjoint rotation therewith via a leaf spring, or the pressure plate or the intermediate plate is connected to the counter-plate for conjoint rotation therewith via a leaf spring.
Claims
1. A hybrid module for a powertrain of a motor vehicle, comprising: an electric machine; a clutch device; and a frictionally-engaging separating clutch arranged between a dual-mass flywheel and an intermediate shaft, comprising: a counter-plate; an outer lamella carrier rigidly connected to the counter-plate; a pressure plate, axially movable relative to the outer lamella carrier; an intermediate plate, axially movable relative to the outer lamella carrier; a first clutch disk, axially movable and extending between the pressure plate and the intermediate plate; and a second clutch disk, axially movable and extending between the counter-plate and the intermediate plate, wherein: a one of the pressure plate or the intermediate plate is connected to the outer lamella carrier for conjoint rotation therewith via a leaf spring; or a one of the pressure plate or the intermediate plate is connected to the counter-plate for conjoint rotation therewith via the leaf spring, wherein: the outer lamella carrier comprises an internal toothing; and the other of the pressure plate or the intermediate plate comprises an external toothing engaged with the internal toothing in a manner which prevents relative rotation but allows axial movement.
2. The hybrid module of claim 1, wherein: the intermediate plate is connected to the outer lamella carrier via the leaf spring; and the pressure plate comprises the external toothing engaged with the internal toothing.
3. The hybrid module of claim 1 wherein the one of the pressure plate or the intermediate plate is connected to the counter-plate for conjoint rotation therewith via the leaf spring.
4. The hybrid module of claim 3, wherein: the counter-plate comprises an outward-extending radial flange or an outward-extending tab; and the leaf spring is fixed to the outward-extending radial flange or to the outward-extending tab.
5. The hybrid module of claim 4, wherein: the pressure plate or the intermediate plate comprises radially outward-extending web-type extensions; and the leaf spring is fixed to the radially outward-extending web-type extensions.
6. The hybrid module of claim 5, wherein: the outer lamella carrier comprises axially extending apertures; and the intermediate plate comprises the radially outward-extending web-type extensions; and the radially outward-extending web-type extensions are engaged with the axially extending apertures.
7. The hybrid module of claim 1, wherein: the intermediate plate is connected to the outer lamella carrier via the leaf spring; and the pressure plate comprises the external toothing engaged with the internal toothing.
8. The hybrid module of claim 1, further comprising the dual-mass flywheel, wherein the outer lamella carrier is coupled to the dual-mass flywheel by toothing engagement.
9. The hybrid module of claim 8, wherein: the outer lamella carrier comprises a dual-mass flywheel external toothing; the dual-mass flywheel comprises a radially inward-extending flange; the radially inward-extending flange comprises a dual-mass flywheel internal toothing; and the dual-mass flywheel internal toothing is engaged with the dual-mass flywheel external toothing.
10. A hybrid module for a powertrain of a motor vehicle, comprising: an electric machine; a clutch device; and a frictionally-engaging separating clutch arranged between a dual-mass flywheel and an intermediate shaft, comprising: a counter-plate; an outer lamella carrier rigidly connected to the counter-plate; a pressure plate, axially movable relative to the outer lamella carrier; an intermediate plate, axially movable relative to the outer lamella carrier; a first clutch disk, axially movable and extending between the pressure plate and the intermediate plate; and a second clutch disk, axially movable and extending between the counter-plate and the intermediate plate, wherein: the pressure plate or the intermediate plate is connected to the outer lamella carrier for conjoint rotation therewith via a leaf spring; the outer lamella carrier comprises an outward-extending radial flange or an outward-extending tab; and the leaf spring is fixed to the outward-extending radial flange or to the outward-extending tab.
11. The hybrid module of claim 10, wherein the pressure plate and the intermediate plate are both connected to the outer lamella carrier via the leaf spring.
12. The hybrid module of claim 10, wherein: the one of the pressure plate or the intermediate plate comprises radially outward-extending web-type extensions; and the leaf spring is fixed to the radially outward-extending web-type extensions.
13. The hybrid module of claim 12, wherein: the outer lamella carrier comprises axially extending apertures; and the intermediate plate comprises the radially outward-extending web-type extensions; and the radially outward-extending web-type extensions are engaged with the axially extending apertures.
14. A hybrid module for a powertrain of a motor vehicle, comprising: an electric machine; a clutch device; and a frictionally-engaging separating clutch arranged between a dual-mass flywheel and an intermediate shaft, comprising: a counter-plate; an outer lamella carrier rigidly connected to the counter-plate; a pressure plate, axially movable relative to the outer lamella carrier; an intermediate plate, axially movable relative to the outer lamella carrier; a first clutch disk, axially movable and extending between the pressure plate and the intermediate plate; and a second clutch disk, axially movable and extending between the counter-plate and the intermediate plate, wherein the pressure plate and the intermediate plate are both connected to the counter-plate via a leaf spring.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) The disclosure is explained in greater detail below by means of embodiment examples with reference to the drawings. The drawings are schematic illustrations and show, in
(2)
(3)
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DETAILED DESCRIPTION
(8)
(9) To actuate the sub-clutches 10, 11, separate actuating systems 23, 24 are provided, which each have a pressure pot 25, 26, which is mounted for rotation relative to a fixed-location piston-cylinder arrangement 29, 30 by means of a corresponding bearing 27, 28. By means of the piston-cylinder arrangement 29, 30, the respective pressure pot 25, 26 can be moved axially. During this process, it compresses the corresponding lamella pack comprising the outer and inner lamellae 13, 15 and 14, 16, respectively, against a respective abutment 31, 32, by means of which the respective lamella pack is closed. When the lamella pack is closed, frictional engagement is formed within the individual sub-clutches 10, 11, with the result that a torque applied to the outer lamella carrier 12 can be transmitted to the respective inner lamella carrier 17, 18 and, from the latter, to the respective output shaft 20, 22.
(10) The example shown in
(11) The outer lamella carrier 12 is rigidly connected to an intermediate shaft 33, which is mounted by means of a bearing 86 in such a way that it does not rotate relative to the intermediate wall 4 or the housing assembly in general. The intermediate wall 4 is sealed off with respect to the intermediate shaft 33 by means of a corresponding sealing element 34. Coupled to the intermediate shaft 33 is a separating clutch 35, which, in turn, is coupled to a dual mass flywheel 36 that, for its part, is connected to a crankshaft flange 37.
(12) The coupling shaft flange 37, for its part, is connected to the internal combustion engine and is therefore driven by the latter. The separating clutch 35, which may also be referred to as the K0 clutch, serves to couple the internal combustion engine when required in order to transmit a torque supplied by means of the internal combustion engine via the intermediate shaft 33 to the rotor 8 and thus to the outer lamella carrier 12, with the result that the torque can be transmitted selectively via the first or the second sub-clutch 10, 11 to the respectively coupled output shaft 20, 22.
(13) The separating clutch 35 has an outer lamella carrier 38, which has axially extending internal toothing. This internal toothing simultaneously also forms external toothing, which likewise extends axially. The combined internal and external toothing is formed by the section 39 indicated by dashed lines.
(14) Furthermore, the separating clutch 35 comprises a counter-plate 40, which is fixed in position when viewed axially and is rigidly connected in this region to the outer lamella carrier 38, which has a corresponding radial flange 73. This can be accomplished by riveted or welded joints, for example.
(15) Also provided is an intermediate plate 41 and a pressure plate 42, which engage via corresponding external toothing systems in the internal toothing of the outer lamella carrier 38 and, by this means, are guided in a manner which prevents relative rotation but allows axial movement. Respective clutch disks 43, 44, which are both connected to the intermediate shaft 33 for conjoint rotation therewith via a corresponding hub 45, engage between the counter-plate 40 and the intermediate plate 41 and between the intermediate plate 41 and the pressure plate 42. Clutch disk 43 is connected to the hub 45 via a bent connecting flange 46, and clutch disk 44 is connected to the connecting flange 46 via a driver disk 47. Since the clutch disks 43, 44 must be axially movable, the hub 45 is guided in an axially movable manner on the intermediate shaft 33, which is externally toothed and to which the hub 45 is connected for conjoint rotation therewith by corresponding internal toothing.
(16) The pressure plate 42 is mounted for rotation relative to the intermediate wall 4 by means of a bearing 48. The bearing 48, in turn, is part of an actuating system 49, which likewise comprises a piston-cylinder unit 50 that, like the other piston-cylinder units already described, can be actuated hydraulically or pneumatically. By means of the movable piston, the bearing 48 and, with it, the pressure plate 42 can be moved axially, with the result that said plate is moved axially in translation and, at the same time, takes the clutch disks 43, 44 and the intermediate plate 41 along axially and thus brings this lamella pack into frictional engagement. This translational movement takes place against the restoring force of a plurality of spring elements 51, which are arranged between the counter-plate 40 and the intermediate plate 41 and between the intermediate plate 41 and the pressure plate 42 in the region of the internal toothing of the outer lamella carrier 38. It is possible for a plurality of separate individual spring elements 51, but also corresponding spring packs coupled into a ring shape, to be positioned in a manner distributed around the respective circumference.
(17) For coupling the dual mass flywheel 36, said flywheel has a radial flange 52, which has internal toothing 53, which meshes with the external toothing of the outer lamella carrier 38, i.e. engages in said toothing. Consequently, it is possible by this means to transmit a torque, which has been transmitted from the internal combustion engine to the dual mass flywheel 36 via the coupling shaft flange 37, from the dual mass flywheel 36 to the outer lamella carrier 38 and, via the latter or the separating clutch 35 itself, to the intermediate shaft 33 and, from the latter, via the double clutch to the corresponding output shaft 20, 22. The central subassembly is the separating clutch 35 and the coupling thereof to the dual mass flywheel. For torque transmission, each of the clutch disks 43, 44 can be clamped frictionally between their neighboring components, i.e. the respective plates 40, 41, 42, when the actuating system 49 is actuated. The two clutch disks 43, 44 can be moved axially but are connected to the intermediate shaft 33 for conjoint rotation therewith. The axially fixed counter-plate 40, the intermediate plate 41 capable of limited axial movement and the pressure plate 42 capable of limited axial movement are connected to the dual mass flywheel 36 for conjoint rotation therewith. In order to close the separating clutch 35 and to transmit torque, the actuating system 49 connected to the separating clutch 35 pushes the pressure plate 42 against the first clutch disk 44. The first clutch disk 44 then comes to rest against the intermediate plate 41, with the result that the pressure plate 42, the clutch disk 44 and the intermediate plate 41 are then moved axially until the intermediate plate 41 strikes the further clutch disk 43 and presses the latter against the axially fixed counter-plate 40. The greater the force exerted on the separating clutch 35 by the actuating system 49, the more strongly the friction surfaces between the plates or disks are pressed together and the greater is the torque that can be transmitted in the separating clutch.
(18) To ensure that the actuating forces are not transmitted to the crankshaft of the internal combustion engine, the counter bearing plate 40 is supported via a bearing 54 on the intermediate shaft 33. This bearing 54 introduces the axial actuating forces into the intermediate shaft 33 but also ensures the centering, support and positioning of the separating clutch 35. This bearing 54 is expediently embodied as an angular contact ball bearing or deep groove ball bearing. In the embodiment example shown, the bearing 54 is press fitted into a bearing seat 55, which is formed on the counter-plate 40 and ensures radial and axial positive engagement. When the separating clutch 35 is mounted on the intermediate shaft 33, the bearing 54 is pushed onto the intermediate shaft 33 and then secured against unwanted axial displacement. In the embodiment example shown, this is accomplished by means of a shaft retention ring 56, which is inserted into a corresponding groove on the intermediate shaft 33. As an alternative, it is also possible to insert further components between the counter bearing plate 40 and the bearing 54 and/or between the bearing 54 and the intermediate shaft 33. In order to increase the loadbearing capacity of the bearing 54 which supports the separating clutch 35 on the intermediate shaft 33, it may be worthwhile to select a significantly larger bearing diameter than the diameter of the intermediate shaft 33. It is then particularly expedient to arrange a part, in the form of a sleeve for example, between the bearing 54 and the intermediate shaft 33, said part compensating the radial distance between the two components and ensuring axial and radial force transmission and positioning.
(19) The counter-plate 40, the intermediate plate 41 (of which it is, of course, also possible to provide several, which then has the effect that a plurality of clutch disks have also to be provided) and the pressure plate 42 are connected to one another by the outer lamella carrier 38. As described, this is rigidly connected to the counter-plate 40, e.g. by welding or riveting. The intermediate plate 41 and the pressure plate 42 can be moved axially relative to the outer lamella carrier 38 but are held in positive engagement radially and in the circumferential direction by the latter. The outer lamella carrier 38 thus ensures that the intermediate plate 41 and the pressure plate 42 remain within the desired range of motion thereof. In addition, the outer lamella carrier ensures torque transmission between the pressure plate 42, the intermediate plate 41, the counter-plate 40 and the dual mass flywheel 36. As described, it is expediently equipped with a toothed contour, the combined internal and external toothing described, extending in the axial direction and repeating itself in the circumferential direction. Engaging in this toothed contour in the embodiment example described are the pressure plate 42, the intermediate plate 41, possibly also the counter-plate 40 and the radial flange 52 of the dual mass flywheel, each by means of respective toothed contours.
(20) In order to promote the reliable opening of the separating clutch 35 after the removal of the load on the part of the actuating system 49, the spring elements 51, in this case helical compression springs, are provided between the counter-plate 40 and the intermediate plate 41 and between the intermediate plate 41 and the pressure plate 42 in this embodiment example. These spring elements 51 push the intermediate plate 41 and the pressure plate 42 back into their open position when the pressure of the pressure medium in the piston-cylinder unit 50 has fallen sufficiently. During this process, the spring elements 51 also push the piston of the piston-cylinder unit 50 back into its initial position. The separating clutch 35 can be equipped with encircling spring elements 51 or with a plurality of spring elements 51 arranged around the circumference, wherein the spring elements 51 are here held in position by the participating plates and/or the lamella carrier 38.
(21) For the assembly of the internal combustion engine and the transmission, the assembly interface is here situated between these two units, more specifically between the dual mass flywheel 36 and the separating clutch 35. The dual mass flywheel 36 is screwed to the crankshaft flange 37 and is thus part of the internal combustion engine as regards the assembly sequence. The separating clutch 35 is fixed on the intermediate shaft 33, which is mounted on the supporting wall 4 connected to the housing 2. As a result, the separating clutch 35 is part of the transmission as regards the assembly sequence. During the fitting together of the internal combustion engine and the transmission during assembly, a splined joint comprising the toothing 53 of the dual mass flywheel 36 and the external toothing of the outer lamella carrier 38 of the separating clutch 35 is also joined together. Via these toothed contours—or axially joinable connecting geometries embodied in some other way—the torque is transmitted between the dual mass flywheel 36 and the separating clutch 35 after assembly. In order to keep the space requirement for this splined or toothed joint as small as possible, the radial flange 52 is provided in the embodiment example shown with internal toothing, which engages in the toothed outer contour, i.e. the external toothing, of the lamella carrier 38, wherein, as
(22) The two clutch disks 43, 44 of the separating clutch 35 can be moved to a limited extent axially relative to one another, i.e. relative to the intermediate shaft 33, as described. However, they are not rotatable relative to one another or relative to the intermediate shaft 33. In the example shown in
(23) In
(24) In the embodiment example of the separating clutch 35 which is illustrated in
(25) In the embodiment example shown in
(26) To fix the outer lamella carrier 38 on the radial flange 52, a radially outward-extending flange 57 is provided or integrally formed on that side of the toothed annular body of the outer lamella carrier 38 which faces the dual mass flywheel 36. This flange 57 is riveted or welded to the radial flange 52. In order to be able to arrange the separating clutch 35 axially as close as possible to the primary side of the dual mass flywheel 36 and radially as close as possible to the arc spring channel 58, in which the arc springs 59 are accommodated and guided, the connection between the flange 57 and the radial flange 52 is arranged completely or partially between the spring-loaded friction elements of the dual mass flywheel 36. The following geometric conditions are thus obtained at least for one friction element. The outer flange diameter of the flange 57 of the outer lamella carrier 38 is thus larger than the inside diameter of the friction element. However, the inside diameter of the friction element is larger than the outside diameter of the toothed annular body of the lamella carrier 38. In this arrangement, the diaphragm spring, which presses the friction element against its friction partner, e.g. the cover of the dual mass flywheel, can be supported on the outer lamella carrier 38 or on the connecting means, e.g. a rivet, by means of which the outer lamella carrier 38 is fixed on the radial flange 52.
(27) Since the outer lamella carrier 38 is rigidly connected to the dual mass flywheel 36, the assembly interface between the internal combustion engine and the transmission extends between the outer lamella carrier 38, which is here part of the internal combustion engine, and the remaining parts of the separating clutch, that is to say essentially the counter-plate 40, the intermediate plate 41 and the pressure plate 42, which are part of the transmission. To enable the toothed contour, i.e. the internal toothing of the outer lamella carrier 38, to be inserted into the external toothing systems or toothed contours of the counter-plate 40, the intermediate plate 41 and the pressure plate 42 during the assembly of the internal combustion engine to the transmission, an alignment element 60, which holds the toothed contours of the three toothed plates 40, 41, 42 of the separating clutch 35 in the correct circumferential position, is provided in the example shown. This ensures that all three toothed contours of the plates 40, 41, 42, into which the external toothing of the outer lamella carrier 38 must be inserted, are in axial alignment with one another. The alignment element 60 not only ensures that the plates 40, 41, 42 cannot rotate relative to one another but also that the components of the separating clutch 35, including the clutch disks 43, 44 and the components connecting them to the intermediate shaft 33 form a stable subassembly, i.e. a stable constructional unit, even without the outer lamella carrier 38. The alignment element 60 thus also serves as a retention device during the transportation of or as a safeguard against loss of the separating clutch 35. In particular, the counter-plate 40, the intermediate plate 41, the pressure plate 42 and the two clutch disks 43, 44 are held together by the alignment element 60. The spring elements 51 which push the plates 40, 41, 42 of the separating clutch 35 back into the open position are fixed on the plates or, alternatively, held in that position by the alignment element, of which of course it is also possible to provide a plurality distributed around the circumference.
(28) In the embodiment example shown in
(29) The alignment element 60 may be embodied as a sheet-metal part, i.e. as a simple punched and deep drawn component. As an alternative to an annular alignment element 60, it is also possible to use a plurality of separate alignment elements arranged around the circumference. On the side of the counter-plate 40 facing the internal combustion engine, the alignment element 60 can also have one or more contour elements or insertion contours which facilitate the insertion of the external toothing of the outer lamella carrier 38 into the tooth gaps of the counter-bearing plate 40 and therefore also the axially aligned toothing systems of the intermediate plate 41 and of the pressure plate 42. These insertion contours can be chamfered surfaces, in particular surfaces chamfered in the radial and/or tangential direction, which are arranged around the tooth gaps of the counter-plate toothing. These surfaces act as it were as a funnel with the function of enabling the external toothing of the outer lamella carrier 38, which approaches the separating clutch 35 in an axial direction of movement but is not precisely aligned with the tooth gaps, to slide along the oblique surfaces until the teeth of the external toothing of the outer lamella carrier 38 are in front of the tooth gaps of the counter-plate 40 and can thus be inserted axially into the separating clutch 35.
(30) As an alternative to the embodiment example embodied in
(31) Like the outer lamella carrier 38, the connecting support has an approximately round region which has an axially extending toothed contour repeated in the circumferential direction radially on the inside and radially on the outside. Like the outer lamella carrier 38, the connecting support can be embodied as a sheet-metal part, the material thickness of which in the region of the toothing is small in relation to the size of the teeth, as in the case of the outer lamella carrier 38. As a result, the material follows a meandering shape in the circumferential direction in order to be able to form the combined internal and external toothing. Here too—as in the case of all the embodiment examples described—it is the case that fundamentally all the components serving for frictional engagement within the separating clutch 35, i.e. the plates 40, 41, 42 and the clutch disks 43, 44, can be referred to as “lamellae”. As an alternative, the separating clutch 35 can also be embodied with more than the four friction surfaces or friction planes shown here if, as already described, a plurality of intermediate plates 41 and additional clutch disks are integrated, as is the case with the sub-clutches 10, 11 of the clutch device 9.
(32) The embodiment example shown in
(33) It is possible to connect the intermediate plate 41 and the pressure plate 42 to the outer lamella carrier 38 via respective separate leaf springs 64, 65, as shown in
(34) A plurality of extensions 67 (on the intermediate plate 41) and 68 (on the pressure plate 42), which are distributed around the circumference and on which the leaf springs 64, 65 are fixed, is likewise provided radially on the intermediate plate 41 and the pressure plate 42. To ensure that these extensions 67 do not collide with the lamella carrier 38, said carrier has axially extending apertures, i.e. is provided locally with longitudinal slots, to ensure that the extensions at least of the intermediate plate 41 and, where applicable, also the extensions of the pressure plate 42, can be introduced into these apertures or slots when the lamella pack is compressed axially. The side of the outer lamella carrier 38 on which the leaf springs 64, 65 are fixed thus has the same purpose as a clutch cover in the majority of commercially available clutches. The lamella carrier shown in
(35) As an alternative, there is also the possibility for the counter-plate 40 to have radially outer extensions on which the leaf springs are fixed. For this purpose, the counter-plate 40 can be provided with a collar which extends radially over the clutch disk 43 arranged adjacent to it, in the direction of the transmission, and which is adjoined in the radial direction by an encircling radial flange or by a plurality of radially extending tabs for fixing the leaf springs.
(36) The intermediate plate 41 and pressure plate 42 fixed by means of the leaf springs 64, 65 can be moved with less friction than is the case with plates 41, 42 mounted in lamella carrier toothing. This is because, by virtue of the torque-transmitting rigid connection of the plates 41, 42 to the outer lamella carrier 38 via the leaf springs 64, 65, there is no friction-generating toothing engagement, i.e. the elements can be moved axially relative to one another without making contact. As a result, the separating clutch 35 with plates 41, 42 fixed on the leaf springs 64, 65 can be controlled and actuated in a particularly effective manner. Moreover, there is no risk that high circumferential accelerations or unfavorable resonance effects will lead to rattling noises, as may occur with lamella toothing systems.
(37) As an alternative to the example shown in
(38)
(39) In the embodiment example shown in
(40) The spring element or elements 69 acts or act more or less tangentially, i.e. in the circumferential direction, and consequently rotates or rotate the outer lamellae carrier 38 relative to the radial flange 52. The teeth of the toothing 53 can thus be clamped between the tooth flanks of the external toothing of the outer lamella carrier 38, against which the toothing 53 comes to rest in one circumferential direction, and the tabs 72 of the bracing element 70, which press the toothing 53 against the abovementioned flanks of the external toothing of the outer lamella carrier 38. Consequently, by this means, continuous contact between two toothing flanks is ensured, thus enabling rattling to be excluded.
(41) The teeth of the toothing 53 of the radial flange 52 are inserted between the mating contours of the external toothing of the outer lamella carrier 38 and of the tabs 72 of the bracing element 70 during the assembly of the internal combustion engine and the transmission.
(42) In the case of the separating clutch 35 shown in
(43) Here, the counter-plate 40, the intermediate plate 41 and the pressure plate 42 are connected to the intermediate shaft 33 for conjoint rotation therewith. For this purpose, the counter-plate 40 has a flange 74, which extends radially toward the intermediate shaft 33 and adjoining which is an internally toothed hub 75, through which the externally toothed intermediate shaft 33 passes. An inner lamella carrier 76 is fixed on the counter-plate 40 or the flange 74, e.g. riveted or welded thereto by means of a radial flange with an L-shaped cross section, which has external toothing. Internal toothing systems formed on the intermediate plate 41 and the pressure plate 42 engage in this external toothing, with the result that these two plates 41, 42 are guided in an axially movable manner on the inner lamella carrier 76 but are equally connected to said carrier for conjoint rotation therewith. If the lamella pack is compressed, the torque can be transmitted to the intermediate shaft 33 via the counter-plate 40 and the hub 75.
(44) This embodiment is therefore distinguished by the fact that the outer lamella carrier 38 is rigidly connected to the dual mass flywheel 36, wherein the clutch disks 43, 44 are guided in an axially movable manner on the outer lamella carrier 38. Furthermore, an inner lamella carrier 76 is provided, relative to which the pressure plate 42 and the intermediate plate 41 are axially movable and which is rigidly connected to the counter-plate 40, which, for its part, is rigidly connected to the intermediate shaft 33 for conjoint rotation therewith.
(45) By means of this construction of the separating clutch 35, the counter-plate 40 can be rigidly connected to the intermediate shaft 33, as described. A bearing 54, as provided in the previous embodiment examples, is no longer required here since not only the actuating forces but also the torque transmitted by the separating clutch can now be introduced into the intermediate shaft 33 via the counter-plate 40. Since this construction of the separating clutch does not support its actuating forces on the crankshaft and nevertheless does not require a bearing 54 for support, this construction provides an advantage in terms of installation space and costs.
(46) The separating clutch 35 with the internally toothed hub 75 belonging to the counter-plate 40 is pushed onto the externally toothed intermediate shaft 33 and secured against unwanted axial displacement by a retaining ring 77. As described, the counter-plate 40, the intermediate plate 41 and the pressure plate 42 are connected to one another by the inner lamella carrier 76, which is rigidly connected to the counter-plate 40, e.g. by welding or riveting, and which engages in internal toothing on the inside diameter of the intermediate plate 41 and thereby positions the intermediate plate 41, guides it axially and couples it to the counter-plate 40 for conjoint rotation therewith. At the opposite end of the inner lamella carrier 76 from the counter-plate 40, said carrier is connected to the pressure plate 42, which, just like the intermediate plate 41, it positions, guides axially and couples to the counter-plate 40 for conjoint rotation therewith.
(47) The pressure plate 42 comprises a radially outer part or section, the actual pressure part, and a radially inner flange part 78, wherein the two parts are connected radially to one another by a number of webs distributed around the circumference. By this means, therefore, a plurality of apertures delimited by means of the webs in the circumferential direction are formed in the pressure plate 42. The radially outer part of the pressure plate 42 forms the friction surface for the adjacent clutch disk 44 and is similar to the intermediate plate 41. The radially outer part of the pressure plate 40 has a toothed contour on its inside diameter to enable it to engage in the inner lamella carrier 76. This toothed contour is interrupted multiple times at the circumference by the radially inward-extending webs and apertures described.
(48) The radially inner part of the pressure plate 42 is shaped as a pressure piece, which connects the pressure plate 42 to the support bearing 48 of the actuating system 49. In order to ensure sufficiently high rigidity, the radially inner part of the pressure plate 42 is embodied as a region that is continuous at the circumference and which, if at all, is penetrated only by small ventilation openings that have only a slight effect on rigidity.
(49) To ensure that the webs which connect the radially outer part and the radially inner part of the pressure plate 42 to one another and delimit the apertures do not strike the inner lamella carrier 76, the inner lamella carrier has gaps at the points at which the webs are located. This means that axially extending fingers, which extend through the apertures in the pressure plate 42, are formed on the inner lamella carrier 76. Here, the webs are inserted into the slots between the fingers. The webs can move back and forth axially within the slots when the pressure plate 42 is moved axially by the actuating system 49. The slots of the inner lamella carrier 76 extend axially into the inner lamella carrier 76 only to a depth required by the range of movement of the pressure plate 42. The rest of the inner lamella carrier 76 is continuous all the way round in order to achieve adequate rigidity. If required for ventilation and permitted by the rigidity of the inner lamella carrier 76, there can also be small isolated ventilation openings in this region.
(50) It is conceivable for the webs distributed on the circumference, between the radially outer and the radially inner part of the pressure part 42, to be guided axially in the slots of the inner lamella carrier 76. In this case, the width of the fingers of the inner lamella carrier 76 and the width of the apertures should be matched to one another in such a way that the pressure plate 42 can be guided axially on the inner lamella carrier 76 and can be connected to the latter for conjoint rotation therewith. If, therefore, the positioning of the pressure plate 42, the axial guidance and the torque transmission is accomplished through the contact between the webs and the fingers or slots, the inner lamella carrier 76 no longer needs to form a toothed contour in the region of the pressure plate 42, and the radially outer part of the pressure plate 42 also no longer needs to be provided with internal toothing.
(51) In the case of the separating clutch 35 shown in
(52) In order to facilitate the mounting of the internal combustion engine on the transmission in the case of the separating clutch 35 shown in
(53) In the case of the separating clutch shown in
(54) When the outer lamella carrier 38 fixed on the dual mass flywheel 36 is inserted into the external toothing systems provided radially on the outside of the clutch disks 43, 44 during the mounting of the internal combustion engine on the transmission, large axial forces can act on the radially outer regions of the clutch disks 43, 44 during the mounting process. These forces can be reduced by the alignment elements described, which ensure that the tooth gaps of the clutch disks 43, 44 are in alignment. In addition or as an alternative, oblique surfaces can be provided next to the tooth gaps, said surfaces allowing the teeth of the internal toothing of the outer lamella carrier 38 to slide more easily into the tooth gaps of the clutch disks 43, 44, as already described above with reference to
(55) In the embodiment example shown in
(56)
(57) Here too, the counter-plate 40 is once again rotatably mounted on the intermediate shaft 33 by means of an extended flange section, in which a bearing seat 55 is formed, and by means of a bearing 54. The pressure plate 42, for its part, is once again connected to the bearing 48 and supported on the latter by means of an extended flange section, the bearing, for its part, as part of the actuating system 49, being axially actuable by means of the piston-cylinder unit 50.
(58) Here, however, the attachment of the two clutch disks 43, 44 to the intermediate shaft 33 is different from the embodiment described in
(59) For connection to the intermediate shaft 33, the inner lamella carrier 80 has a radially inward-extending flange 87 and an internally toothed hub 88 adjoining said flange, which engages in external toothing on the intermediate shaft 33. In one axial direction, the inner lamella carrier 80 is supported on a stop 89 in the form of an annular collar on the intermediate shaft 33 and, on the other side, support is provided by means of the bearing 54 or the inner ring thereof, which is fixed axially in position.
(60) Axially adjoining the hub 88 is the sealing element 34, which, in the embodiment example shown, is positioned within the support ring 48, by means of which the pressure plate 42 is supported axially.
(61) In the example shown, an alignment element 60 is likewise provided, which aligns external toothing systems formed on the pressure plate 42, the intermediate plate 41 and the counter-plate 40, said toothing systems engaging in the axially extending internal toothing of the outer lamella carrier 38. Here too, the alignment element 60 has corresponding surrounding sections on both sides in the form of the radial flange 61 and of the bent-over end 63, which engage behind or over the counter-plate 40 and the pressure plate 42, thereby providing axial retention. As regards further details, attention is drawn to the detailed description of the alignment element 60 shown in
(62) In conclusion, it should be noted that all the features described for the various embodiments and embodiment examples can be combined with one another in any desired manner. Details of one embodiment example in one figure can be transferred without modification or with appropriate modification also to the other embodiment examples shown in the other figures.
(63) The direction indicators “axial”, “radial”, “tangential” and “in the circumferential direction” refer to the axis of rotation about which the respective clutch, the clutch components, such as disks or plates, or the rotor of the electric machine rotate. Thus, the axial direction is orthogonal to the friction surfaces of the friction partners of the respective clutches.
(64) Although the present disclosure has been described above with reference to embodiment examples, it is self-evident that various embodiments and modifications can be implemented without exceeding the scope of the present disclosure as defined in the appended claims.
REFERENCE NUMERALS
(65) 1 hybrid module
(66) 2 housing
(67) 3 wet space
(68) 4 partition wall
(69) 5 dry space
(70) 6 electric machine
(71) 7 stator
(72) 8 rotor
(73) 9 clutch device
(74) 10 sub-clutch
(75) 11 sub-clutch
(76) 12 outer lamella carrier
(77) 13 lamella
(78) 14 lamella
(79) 15 lamella
(80) 16 lamella
(81) 17 inner lamella carrier
(82) 18 inner lamella carrier
(83) 19 hub
(84) 20 output shaft
(85) 21 hub
(86) 22 output shaft
(87) 23 actuating system
(88) 24 actuating system
(89) 25 pressure pot
(90) 26 pressure pot
(91) 27 bearing
(92) 28 bearing
(93) 29 piston-cylinder arrangement
(94) 30 piston-cylinder arrangement
(95) 31 abutment
(96) 32 abutment
(97) 33 intermediate shaft
(98) 34 sealing element
(99) 35 separating clutch
(100) 36 dual mass flywheel
(101) 37 coupling shaft flange
(102) 38 outer lamella carrier
(103) 39 section
(104) 40 counter-plate
(105) 41 intermediate plate
(106) 42 pressure plate
(107) 43 clutch disk
(108) 44 clutch disk
(109) 45 hub
(110) 46 connecting flange
(111) 47 driver disk
(112) 48 bearing
(113) 49 actuating system
(114) 50 piston-cylinder unit
(115) 51 spring element
(116) 52 radial flange
(117) 53 internal toothing
(118) 54 bearing
(119) 55 bearing seat
(120) 56 shaft retention ring
(121) 57 flange
(122) 58 arc spring channel
(123) 59 arc spring
(124) 60 alignment element
(125) 61 radial flange
(126) 62 extension
(127) 63 edge
(128) 64 leaf spring
(129) 65 leaf spring
(130) 66 radial flange
(131) 67 extension
(132) 68 extension
(133) 69 spring element
(134) 70 bracing element
(135) 71 radial flange
(136) 72 tab
(137) 73 radial flange
(138) 74 flange
(139) 75 hub
(140) 76 inner lamella carrier
(141) 77 retaining ring
(142) 78 flange part
(143) 79 retaining ring
(144) 80 inner lamella carrier
(145) 81 external toothing
(146) 82 internal toothing
(147) 83 internal toothing
(148) 84 bearing
(149) 85 bearing
(150) 86 bearing
(151) 87 flange
(152) 88 hub
(153) 89 stop