WO2019166054A1

WO2019166054A1 - Actuation device having an axially nested slave cylinder; clutch system; and drive unit

Info

Publication number: WO2019166054A1
Application number: PCT/DE2019/100135
Authority: WO
Inventors: Simon Ortmann; Philippe Wagner
Original assignee: Schaeffler Technologies AG & Co. KG
Priority date: 2018-02-27
Filing date: 2019-02-12
Publication date: 2019-09-06
Also published as: CN111788403A; CN111788403B; DE102018104373B3

Abstract

The invention relates to an actuation device (1) for a clutch system (2) of a motor vehicle, having: two slave cylinders (3, 4) which are each designed to actuate a clutch (5, 6), each slave cylinder (3, 4) having a piston (7a, 7b) and a housing region (9a, 9b) which guides the piston (7a, 7b) in a displacement direction and, together with the piston (7a, 7b), delimits a fluid chamber (8a, 8b); and having a supply unit (10), the slave cylinders (3, 4) being provided on the supply unit (10) in such a way that, per slave cylinder (3, 4), a fluid supply channel (11a, 11b) formed by the supply unit (10) is fluidically connected to the fluid chamber (8a, 8b), wherein the housing region (9a) of a first slave cylinder (3) of the two slave cylinders (3, 4) is formed directly by the supply unit (10), and the housing region (9b) of a second slave cylinder (4) of the two slave cylinders (3, 4) is formed at least in part from a housing component (12) separate from the supply unit (10). The invention also relates to a clutch system (2) for a drive train of a motor vehicle, the clutch system having this actuation device (1); and to a drive unit (30).

Description

Actuator with axially nested slave cylinder;

Coupling system and drive unit

The invention relates to an actuating device for a clutch system of a motor vehicle, such as a car, truck, bus or other commercial vehicle, with two slave cylinders each designed to actuate a clutch, each slave cylinder having a piston and a piston guiding the piston in its direction of displacement and With the piston having a fluid space limiting housing portion, and with a supply unit, on which supply unit, the slave cylinder are provided such that each slave cylinder fluid supply channel formed by the supply unit fluidly connected to the fluid space. Thus, an actuating device is realized with a double slave cylinder. Furthermore, the invention relates to a coupling system for a drive train of a motor vehicle, with two clutches and this actuator. In addition, the invention relates to a drive unit for a drive train of a motor vehicle, with this clutch system.

Generic prior art is known, for example, from DE 10 2013 216 333 A1. This is a multiple coupling device, in particular designed as Doppelkupp- lungsvorrichtung disclosed. The multiple clutch device has a first friction clutch and a second friction clutch, wherein the two friction clutches are connected or connectable to a motor shaft on the one hand and to a transmission input shaft on the other hand. The two friction clutches can be actuated by means of an actuating device, wherein the two actuating devices have the same actuating direction and thus the friction clutches can be actuated on the same side.

However, it has turned out to be a disadvantage of known actuating devices that they are often of relatively large construction and relatively expensive to mount in the respective coupling system. The slave cylinders, which are often supplied with so-called rotary feedthroughs, are made by a relatively large number of assembly steps to assemble on the supply unit ensuring the rotary feedthrough and to connect it with the components of the couplings.

It is therefore the object of the present invention to overcome the disadvantages known from the prior art and, in particular, to provide an actuating device for a coupling system which can be easily mounted in the coupling system while stressing the smallest possible installation space.

This is inventively achieved in that the (first) housing portion of a first slave cylinder of the two slave cylinder is formed directly by the supply unit and the (second) housing portion of a second slave cylinder of the two slave cylinders at least partially from a housing component formed separately from the supply unit is trained.

As a result, a particularly compact axial nesting of the two slave cylinders is achieved. Also, the number of components is significantly reduced. This also ensures easy installation.

Further advantageous embodiments are claimed with the subclaims and explained in more detail below.

Accordingly, it is furthermore advantageous if the piston of the respective slave cylinder is non-displaceably connected to an actuating bearing on a side facing away from the fluid space and the actuating bearing of the first slave cylinder and / or the actuating bearing of the second slave cylinder as an (axial / axial) Needle bearing or ball bearing is formed. As a result, further axial space is saved.

If the housing component (direct / immediate) is attached / mounted on a radial outside of the supply unit, the assembly effort is further reduced. It is furthermore advantageous if the housing component forms a radial outer wall and at least partially forms an (axial) side wall of the (first) housing region of the first slave cylinder.

A radial inner wall of the (first) housing portion of the first slave cylinder is then preferably formed (directly) by the supply unit.

It is also advantageous if the (first) fluid space of the first slave cylinder at a connection point between the housing component and the supply unit by a arranged in a recess of the supply unit seal (more preferably as a sealing ring, such as O-ring, A-ring or groove seal , formed) is sealed off. This further simplifies the structure.

If the actuating bearing of the first slave cylinder is connected to a coupling element which can be arranged or arranged on the clutch side (ie, to an axial side of the actuating bearing facing away from the piston), the connecting element protruding in the radial direction beyond the housing component of the first slave cylinder Slave cylinder in the axial direction are arranged even closer together.

Furthermore, it is advantageous with regard to the supply unit if it is formed from a plastic material (in particular with regard to a base section and an extension section which is fastened to the base section and forms the (second) housing section of the second slave cylinder Extension section are positively, positively and / or cohesively connected to each other.

The housing component is advantageously made of a metal, namely a metal sheet, formed / formed.

Each slave cylinder is expediently designed as a concentric slave cylinder (CSC / Concentric Slave Cylinder). In addition, the invention relates to a clutch system for a drive train of a motor vehicle, with at least two clutches and an actuation device according to the invention according to at least one of the embodiments described above, wherein the first slave cylinder is arranged and configured to actuate a first clutch and the second slave cylinder for actuating a second coupling arranged and formed.

In addition, it is advantageous if on a radial outer side of the housing component designed as a (radial / radial) needle bearing clutch bearing is arranged, which clutch bearing radially supports a coupling component of the first clutch and / or the second clutch. This arrangement of the clutch bearing the required space in the axial direction is significantly reduced.

The invention further relates to a drive unit for a drive train of a motor vehicle, with the clutch system according to the invention according to at least one of the embodiments described above and a transmission device, wherein a first transmission input shaft of the transmission device with a Kupplungsbe- part of the first clutch is rotatably connected and a second Transmission input shaft of the transmission device is rotatably connected to a coupling component of the second clutch.

In this context, it has been found to be particularly advantageous if the supply unit is arranged centered by a gear housing / recorded / attached. This further reduces both the complexity and the assembly effort of the drive unit.

In other words, according to the invention, two axially sheathed housings (first and second housing areas) for the actuation of a first clutch K1 and a second clutch K2 with an extra housing (housing component) for the K1 are thus realized. For a triple clutch / a hybrid module (clutch system), a space-optimized actuating system (actuating device) is thus proposed. The actuations (slave cylinder) for the first clutch (K1) and the second clutch (K2) are nested axially one behind the other. Both operations are held and supplied by a radially inwardly arranged supply component (supply unit). The K2 housing (second housing area), like the pressure chamber inner wall (inner wall) of K1, is formed by the supply component. The pressure space outer wall (outer wall) of K1 is formed by an additional component (housing component), such as a sheet metal part. Thus, a housing (second housing area) is integrated in the supply component and the second housing (first housing area) is formed at least partially by a separate component.

The invention will now be explained in more detail with reference to figures.

Show it:

1 is a longitudinal sectional view of a drive unit comprising an inventive actuating device according to a preferred embodiment, wherein both the structure of the actuating device and the structure of a coupling system, with which the actuating device cooperates, is clearly visible, and

2 shows a detailed view of the drive unit cut in the longitudinal direction

Fig. 1 in a region of the actuating device.

The figures are merely schematic in nature and serve only to understand the invention. The same elements are given the same reference numerals.

A preferred embodiment of an actuating device 1 according to the invention can be seen by considering the drive unit 30 illustrated in FIG. In this illustration, the actuating device 1 is already mounted in the drive unit 30 and operatively connected to couplings 5, 6 of a coupling system 2 of the drive unit 30. The actuating device 1 is inserted in an inner space 22 of a coupling housing 23 of the coupling system 2. The drive unit 30 In addition to the clutch system 2 embodied here as a hybrid module, a transmission device 26 is provided which, for the sake of clarity, is shown only by its transmission input shafts 27a and 27b and a part of its transmission housing 32. The drive unit 30 is in operation part of a drive train (hybrid drive train) of a hybrid motor vehicle.

As can be seen more clearly in FIG. 1 with regard to the coupling system 2, the clutch system 2 has a total of three clutches 5, 6, 33. The three clutches 5, 6, 33 are also referred to as triple clutch. A first clutch 5 and a second clutch 6 together form a double clutch. A third clutch is implemented in the form of a separating clutch 33.

An input part 34 (also referred to as connection / intermediate part) of the clutch system 2 is in operation directly or indirectly rotatably connected to an output shaft of an internal combustion engine not shown here for the sake of clarity. The input part 34 is mounted either directly on the output shaft rotationally fixed or indirectly by means of a torsional vibration damping device, such as a dual mass flywheel, connected to the output shaft. The input part 34 is rotatably mounted on a clutch housing 23 of the clutch system 2. The input part 34 projects from an axial outside of the coupling housing 23 into the interior 22 of the coupling housing 23. In the interior 22, the input part 34 forms a first coupling component 35 a of the separating clutch 33 with. In particular, the input part 34 has a support region 36 of the first coupling component 35a. A plurality of first friction elements 20 (of the first coupling component 35a) are rotationally fixed and slidably received relative to one another in the axial direction on the support region 36. In turn, a plurality of second friction elements 21, which are arranged alternately with the first friction elements 20 in the axial direction, are provided on a further second clutch component 35b of the separating clutch 33. The second friction elements 21 are rotatably mounted on a support 37 and received axially displaceable relative to each other.

The carrier 37 also forms a sleeve-shaped rotor receiving area 38. This rotor receiving portion 38 receives on its radially outer side a rotor 39th an electric machine 40 turned up. The electric machine 40 is likewise typically part of the coupling system 2. The electric machine 40 is arranged coaxially to a rotation axis 14. The rotor 39 thus also extends around the axis of rotation 14 throughout. A stator of the electric machine 40 (not illustrated here for clarity) is firmly held in the clutch housing 23. The rotor 39 is typically rotatably supported relative to the stator (via the carrier 37) and driven by the stator.

The two clutches 5 and 6 are acting between the carrier 37 and each of a transmission input shaft 27 a, 27 b of the transmission device 26. The first clutch 5 is arranged with its friction elements 20, 21 radially outside (at least partially) of the friction elements 20, 21 of the separating clutch 33. Also, the first clutch 5 with its friction elements 20, 21 is arranged axially offset relative to friction elements 20, 21 of the second clutch 6.

A first coupling component 28a of the first clutch 5 is formed directly by the carrier 37 and first friction elements 20. The first friction elements 20 of the first clutch 5 are rotationally fixed on a radially inner side of the carrier 37 / of the rotor receiving region 38 and axially displaceable relative to one another. A second clutch component 28b of the first clutch 5 is non-rotatably connected to the first transmission input shaft 27a. The second clutch constituent 28b has a (first) friction element carrier 41a, on which a plurality of second friction elements 21 of the first clutch 5 are received in a rotationally fixed and axially displaceable manner relative to one another. The first friction element carrier 41 a is non-rotatably mounted on the first transmission input shaft 27a. In a closed position of the first clutch 5, their friction elements 20 and 21 are typically compressed axially in such a way that they are connected to each other with frictional force in the direction of rotation. In this closed position, the two coupling components 28a and 28b are thus rotationally connected. In an open position of the first clutch 5, the two coupling components 28a and 28b are rotatably decoupled and thus freely rotatable relative to each other. For actuating the first clutch 5, the actuating device 1 described in more detail below has a first slave cylinder 3. The second clutch 6 is largely formed according to the first clutch 5. The second clutch 6 also has a first clutch component 29 a, which furthermore has a plurality of first friction elements 20. The first friction elements 20 of the second clutch 6 are likewise rotationally fixed on the radially inner side of the carrier 37 / of the rotor receiving region 38 and axially displaceable relative to one another. A second clutch component 29b of the second clutch 6 is non-rotatably connected to the second transmission input shaft 27b. The second clutch component 29b of the second clutch 6 in turn has a plurality of second friction elements 21 and a (second) friction element carrier 41b. The second friction element carrier 41 b is rotatably mounted on the second transmission input shaft 27 b. In a closed position of the second clutch 6, the friction elements 20 and 21 thereof are compressed axially in a typical manner in such a way that they are connected to each other with frictional force in the direction of rotation. In this closed position, the two clutch components 29a and 29b are thus rotationally connected. In an open position of the second clutch 6, the two coupling components 29a and 29b are rotatably decoupled and thus freely rotatable relative to each other. For actuating the second clutch 6, the actuating device 1 described in more detail below has a second slave cylinder 4.

It can also be seen in FIG. 1 that the first transmission input shaft 27a is arranged radially within the second transmission input shaft 27b. The second transmission input shaft 27b is consequently implemented as a hollow shaft.

The actuating device 1 according to the invention is designed as a double-take-up cylinder / double-cylinder cylinder unit, as illustrated in detail in FIG. The actuating device 1 has two slave cylinders 3 and 4, which are connected in a modular manner together with a supply unit 10 accommodating them. Each slave cylinder 3, 4 is designed as a concentric slave cylinder 3, 4.

Both slave cylinders 3, 4 have a housing region 9a, 9b. Each housing region 9a, 9b is at least partially formed directly by the supply unit 10. Accordingly, the first slave cylinder 3 has a first housing area 9a, which is partially formed by the supply unit 10. A (second) housing portion 9b of the second slave cylinder 4 is completely formed by the supply unit 10.

Together, the two slave cylinders 3 and 4 are arranged on the side of their housing regions 9a, 9b on a radial outer side of the supply unit 10 of the actuating device 1. The supply unit 10 is formed overall in a substantially sleeve-shaped and also referred to as a supply component. The supply unit 10 has a longitudinal axis 13, which in FIGS. 1 and 2 is arranged coaxially with the axis of rotation 14. The supply unit 10 thus serves both for radial and axial positioning / accommodation of the two slave cylinders 3 and 4 / of the housing areas 9a, 9b.

The supply unit 10 has a base portion 45 and an extension portion 51 adjoining and fixed thereto in an axial direction (along the longitudinal axis 13). The base portion 45 and the extension portion 51 are axially directly attached to each other. The base portion 45 and the extension portion 51 are connected in this embodiment via a non-positive connection in the form of a screw or rivet connection. At the one connection region between the base section 45 and the extension section 51, seals are preferably arranged / introduced. Alternatively, as implemented in further embodiments, the base section 45 and the extension section 51 are also connected to one another in the connection region by means of a material connection, preferably a welded connection (such as ultrasonic or laser welding). The base portion 45 is fixedly received in the transmission housing 32, namely pressed. Thus, the supply unit 10 is mounted integrally on the transmission housing 32.

From Fig. 2 also shows that the supply unit 10 immediately forms a radial inner wall 49 of the first housing portion 9a. The radial inner wall 49 is formed in the connecting portion / butting portion of the base portion 45 and the extension portion 51. Consequently, the inner wall 49 is in a first axial Partial region formed by the base portion 45 and in a second portion adjacent to the first portion by the extension portion 51. An axial side wall 50 of the first housing region 9a, which connects the inner wall 49 in the radial direction with a radial outer wall 48 arranged radially outside the inner wall 49, is partially (with a first radially inner partial region) by the supply unit 10, namely a shoulder of the basic sections 45. Another part of the side wall 50 (with a second radially outer portion) and the outer wall 48 are formed by a housing member 12 formed separately from the supply unit 10.

The housing component 12 is fastened on a radial outer side 15 of the supply unit 10. The housing component 12 is pressed onto the radial outer side 15 of the supply unit 10. In addition, the housing component 12 is axially supported / fixed on the base section 45 by a (radial) shoulder / stop (not shown) for clarity on the supply unit 10 /. The shoulder is then arranged next to the housing component 12 to an axial side facing away from the first piston 7a, and the housing component 12 is in contact with this shoulder. The housing component 12 is formed from a metal sheet. The supply unit 10 is formed with respect to its base portion 45 and its Erweiterungsabschnit- 51 made of a plastic. A first fluid space 8a of the first slave cylinder 3 is sealed at a connection point 53 between the housing component 12 and the supply unit 10, namely the base portion 45, by a seal 55. The seal 55 is formed as an O-ring. The seal 55 is received / disposed in a recess 54 of the base portion 45 and pressed radially from the inside to the housing member 12.

The second housing portion 9 b is completely formed by the extension portion 51. The extension portion 51 extends away from the base portion 45 such that the second housing portion 9b is formed axially adjacent to the first housing portion 9a.

In the respective housing portion 9a, 9b, a piston 7a, 7b axially displaceable, ie slidably received in the direction of the axis of rotation 14. The piston 7a, 7b includes a fluid space 8a, 8b together with the housing portion 9a, 9b. The two slave cylinders 3, 4 are essentially the same in the further construction. To actuate the respective first or second clutch 5, 6, the respective fluid chamber 8a, 8b is pressurized during operation.

The first housing portion 9a has an axial (first) opening 42a, which is aligned in the direction of the first clutch 5. Through the opening 42a (via a first actuating bearing 16a), the first clutch 5 can be actuated. The first housing portion 9a is constructed overall annular. In the first housing portion 9a formed as a ring piston first piston 7a is slidably received. For sealing the first fluid space 8a enclosed between the first piston 7a and the first housing area 9a, piston seals 43a, 43b are to a radial inner side and a radial outer side of the first piston 7a between the first piston 7a and the first housing area 9a used. A first piston seal 43a in the form of a sealing ring is received on the radially inner side of the first piston 7a, and a second piston seal 43b in the form of a sealing ring is received on the radially outer side of the first piston 7a. The first piston 7a is completely received / guided axially inside its first housing area 9a within its displaced displacement during operation. The piston seals 43a, 43b are formed as O-rings, A-rings or groove sealing rings.

The first piston 7a is in a starting position (retracted position), as shown in FIG.

2, at a stop region 44 of the first housing portion 9a, namely on the side wall 50, supported. When the (first) fluid space 8a is pressurized, the first piston 7a is displaced to its extended position and, consequently, the stopper area 44 is spaced from the first piston 7a. In order to transmit the pressure force to be transmitted to a (first) pressure pot 46 of the first clutch 5 during the actuation of the first clutch 5 / during the displacement of the first piston 7a from its retracted position to its extended position, the first piston 7a is by means of however, the (first) actuating bearing 16a (indirectly) is connected so as to be displaceable relative to the first pressure pot 46 in a relatively rotatable manner. The first actuating bearing 16a is preferably supported by a shim disk 56 to a side facing the first pressure pot 46 axially. The first actuating bearing 16a is designed as a needle bearing, namely as an axial needle bearing (alternatively also a ball bearing). The first pressure pot 46 is in turn coupled axially displaceably to the friction elements 20, 21 of the first clutch 5.

The first actuating bearing 16 a is supported on the first pressure pot 46 on the axial side remote from the first piston 7 a by means of a connecting element 19 which extends away from the first actuating bearing 16 a in the axial direction and in the radial direction. The first pressure pot 46 is then in turn axially slidably coupled to the Reibele- elements 20, 21 of the first clutch 5. As can be seen in this connection, the connecting element 19 is dimensioned in such a way that it extends outwardly in the radial direction to the extent that it projects beyond the first housing element 9a in the radial direction. In this case, a particularly compact axial construction of the actuating device 1 is realized.

The second slave cylinder 4 is formed according to the first slave cylinder 3. The second housing portion 9b thus likewise accommodates a second piston 7b (annular piston) in a displaceable manner and encloses a second fluid space 8b with it. As a support in a starting position according to FIG. 2, the second housing region 9 b formed completely and directly by the extension section 51 also has a stop region 44. A (second) opening 42b of the second housing portion 9b is rectified in the axial direction to the first opening 42a.

A second actuating bearing 16b, likewise designed in the form of an axial needle bearing, is arranged axially between the second piston 7b and a further (second) pressure pot 47 (the second clutch 6). The second actuating bearing 16 b is supported by a shim disk 56 to a side facing the second pressure pot 47 axially. The second actuating bearing 16b is supported axially directly on a (second) pressure pot 47 of the second clutch 6. Also, the second piston 7b is provided with piston seals 43a, 43b. The first piston seal 43a of the first slave cylinder 3 and the first piston seal 43a of the second slave cylinder 4 are designed as identical parts. The second piston seal 43b of the first slave cylinder 3 and the second piston seal 43b of the second slave cylinder 4 are also formed as equal parts. Also, the first and second actuating bearings 16a, 16b as identical parts. The two pistons 7a, 7b are also designed as identical parts.

In addition, the supply unit 10 serves to supply fluid to the fluid spaces 8a and 8b during operation. Here, in the supply unit 10, a first fluid supply channel 11 a is introduced, which is fluidically connected to the first fluid chamber 8 a. The first fluid supply channel 11a is formed by a first channel region which passes axially through the base section 45 and a second channel region which opens radially outward into the first fluid chamber 8a.

A likewise introduced in the supply unit 10 second Fluidzuführkanal 11 b, which is formed separately from the first Fluidzuführkanal 11 a, is fluidly connected to the second fluid chamber 8b. The second fluid supply channel 11b is formed by a channel region axially penetrating the base section 45 and the extension section 51. The second fluid supply channel 11b opens axially into the second fluid chamber 8b. Thus, the respective slave cylinder 3, 4 in response to a fluid pressure in the respective Fluidzuführkanal 11 a, 11 b control. To seal off a connection region 17a or 17b between the respective fluid supply channel 11a, 11b and the transmission housing 32, sealing rings 18, in each case axially offset, are arranged. The sealing rings 18 are implemented, for example, as O-rings, A-rings or groove sealing rings.

Furthermore, in the supply unit 10, as not shown here for the sake of clarity, a third fluid supply channel can be introduced, which serves for supplying a cooling fluid into the interior space 22 / as a cooling fluid supply channel. The supply unit 10 thus also serves, during operation of the drive unit 30, for cooling fluid supply for cooling the respective friction elements 20, 21 of the clutches 5, 6, 33. The third fluid supply channel then preferably discharges directly into the interior 22 of the clutch system 2 on.

In addition, the carrier 37 has a radially inwardly extending from the rotor receiving portion 38 radially inwardly extending disc region 52. The designated also as a clutch cover disc portion 52 is a coupling bearing 25 on a radial outer side 24 of the housing member 12 is supported / supported. The clutch bearing 25 is formed as a radial needle bearing. Thus, during operation, the first and second clutches 5, 6 are at least partially radially supported / supported via the clutch bearing 25. It can also be seen that the connecting element 19 extends outwardly in the radial direction so far that it partially overlaps / projects over the coupling bearing 25 from one axial side. This allows a particularly compact design.

In addition, it can be seen in FIG. 1 that the housing component 12 is radially supported / centered on a projection of the transmission housing 32.

In Fig. 1 it is also apparent that each return springs 31 a, 31 b of the two clutches 5, 6 are provided. A first return spring 31a acting on the first pressure pot 46 is arranged on a side of the friction elements 20, 21 of the second clutch 6 which faces away axially from the friction elements 20, 21 of the first clutch 5. A restoring spring 31 b acting on the second pressure pot 47 is also arranged on the side of the friction elements 20, 21 of the second clutch 6 facing away axially from the friction elements 20, 21 of the first clutch 5. In principle, these return springs 31 a, 31 b can be arranged at other locations.

In other words, according to the invention, a release link (first and second slave cylinder 3, 4) is implemented, which is nested axially in one another. Flierdurch is a module / a separate unit allows. For this purpose, a housing component (supply component 10) was developed, which can be equipped from two sides with a CSC piston (first and second pistons 7a, 7b) and bearings (first and second actuator bearings 16a, 16b). The component 10 is then fixed in the bell (gear housing 32 via a further component (housing component 12) connected to this housing 10, via which the supply of fluid takes place.

For a triple clutch (clutch system 2) consisting of a rotor 39 with hybrid module side mounting, and from the clutch packs K0 (friction elements 20, 21 of the clutch 33), K1 (friction elements 20, 21 of the first clutch 5) and K2 (friction elements 20, 21 of the second clutch 6) becomes a transmission side bearing proposed via a needle bearing 25 on a release member. The release member consists of an actuator K1 (first slave cylinder 3) and an actuator K2 (second slave cylinder 4), which are nested axially one behind the other. The actuators 3, 4 are held and supplied by a housing component 10. This is connected to a bearing component (base portion 45), which takes over the supply of hydraulic fluid.

The parts 45 and 51 form an overall housing 10. This connection is made via a screw or rivet connection with the aid of seals or via a welded connection (ultrasonic / laser welding). In this case, the component 10 assumes the following functions: Takeover of the pressure fluids and of the cooling oil for the clutch 5, 6 from the transmission bell (transmission housing 32). For this purpose, transfer geometries are provided in the rear area as well as seals 18 between them. These can be designed as O-rings. The component 45 brings the fluid for K1 ideally directly to the place of use (via the first Fluidzuführkanal 11 a). The component 51 provides the continuation of the fluids for the partial clutch K2 6 available. Furthermore, here the guide diameter and parts of the pressure chambers (fluid chambers 8a, 8b) are desolate. Thus, the CSC K2 (second slave cylinder 4) is completely in the component 51, wherein the two pressure chamber walls are also represented by part 51. In the case of CSC K1 (first slave cylinder 3), only the inner piston diameter (inner wall 49) is set by the housing (supply unit 10). The outer diameter (outer wall 48) of CSC K1 3 is represented by a further part 12 (ideally formed of sheet metal). This is connected via a seal (seal 55) and ideally a stop with part 45 (in the figure, the stop is missing, it is preferably at the right end of part 12).

In FIG. 2, the support of part 12 is on the centering 32, while the support of part 54 at the right end of the installation space takes place in the axial direction. Part 12 is centered in the bell housing 32 and contributes via a radial needle bearing (clutch bearing 25) for supporting the clutch 5, 6 via the clutch cover 52 at. The subsystems K1 and K2 3, 4 each consist of a piston 7a / 7b, a bearing 16a, 16b, in the figures, a needle bearing (ball bearings also conceivable), and a Shim disk 56 and a seal 43a, 43b. Ideally, the component is designed such that the needle bearings 16a, 16b, the seals 43a, 43b and the pistons 7a, 7b are exactly the same in order to save on tool costs and parts.

LIST OF REFERENCES

actuator

coupling system

first slave cylinder

second slave cylinder

first clutch

second clutch

a first piston

b second piston

a first fluid space

b second fluid space

a first housing area

b second housing area

0 supply unit

1 a first Fluidzuführkanal

1 b second fluid supply channel

2 housing component

3 longitudinal axis

4 rotation axis

5 radial outside of the supply unit 6a first actuating bearing

6b second actuating bearing

7a first connection area

7b second connection area

8 sealing ring

9 connecting element

0 first friction element

1 second friction element

2 interior

3 coupling housing

4 Outside of the first housing component

5 clutch bearings

6 gear mechanism

7a first transmission input shaft

7b second transmission input shaft

8a first clutch component of the first clutch b second clutch component of the first Kupplunga first clutch component of the second Kupplungsb second clutch component of the second clutch

drive unit

a first return spring

b second return spring

gearbox

separating clutch

introductory

a first coupling component of Trennkupplungb second coupling component of the separating clutch support area

carrier

Rotor receiving area

rotor

electric machine

a first friction element carrier

b second friction element carrier

a first opening

b second opening

a first piston seal

b second piston seal

stop area

base portion

first pressure pot

second pressure pot

outer wall

inner wall

Side wall

Enhancements section

disk area

junction

recess

poetry

Shimscheibe

Claims

claims

1. actuating device (1) for a clutch system (2) of a motor vehicle, with two each for actuating a clutch (5, 6) formed slave cylinders (3, 4), each slave cylinder (3, 4) a piston (7a, 7b) and a piston (7a, 7b) leading in a direction of displacement and with the piston (7a, 7b) a fluid space (8a, 8b) limiting housing portion (9a, 9b), and with a supply unit (10), on which supply unit (10) the slave cylinder (3, 4) are provided such that each slave cylinder (3, 4) formed by the supply unit (10) Fluidzuführkanal (11 a, 11 b) with the fluid space (8 a, 8 b) fluidly is connected, characterized in that the housing portion (9a) of a first slave cylinder (3) of the two slave cylinder (3, 4) is formed directly by the supply unit (10) and the housing portion (9b) of a second slave cylinder (4) of the two slave cylinder (3, 4) at least partially from em is formed separately to the supply unit (10) shaped housing component (12).

2. Actuating device (1) according to claim 1, characterized in that the piston (7a, 7b) of the respective slave cylinder (3, 4) on a fluid chamber (8a, 8b) axially facing away from an actuating bearing (16a, 16b ) and the actuating bearing (16a) of the first slave cylinder (3) and / or the actuating bearing (16b) of the second slave cylinder (4) is designed as a needle bearing or ball bearing.

3. Actuating device (1) according to claim 1 or 2, characterized in that the housing component (12) on a radial outer side (15) of the supply unit (10) is attached.

4. Actuating device (1) according to one of claims 1 to 3, characterized in that the housing component (12) has a radial outer wall (48) and at least partially a side wall (50) of the housing portion (9a) of the first slave cylinder (3). formed.

5. Actuating device (1) according to one of claims 1 to 4, characterized in that a radial inner wall (49) of the housing portion (9a) of the first slave cylinder (3) by the supply unit (10) is formed.

6. Actuating device (1) according to one of claims 1 to 5, characterized in that the fluid space (8a) of the first slave cylinder (3) at a connection point (53) between the housing component (12) and the supply unit (10 ) is sealed by a in a recess (54) of the supply unit (10) arranged seal (55).

7. Actuating device (1) according to one of claims 1 to 6, characterized in that the actuating bearing (16a) of the first slave cylinder (3) is connected to a coupling side can be arranged connecting element (19), wherein the connecting element (19) in the radial direction via the housing region (9a) of the first slave cylinder (3) protrudes.

8. A clutch system (2) for a drive train of a motor vehicle, comprising at least two clutches (5, 6) and an actuating device (1) according to one of claims 1 to 7, wherein the first slave cylinder (3) for actuating a first clutch (3). 5) is arranged and formed, and the second slave cylinder (4) is arranged and designed to actuate a second clutch (6).

9. Coupling system (2) according to claim 8, characterized in that on a radially outer side (24) of the housing component (12) designed as a needle bearing clutch bearing (25) is arranged, which has a coupling component (28a, 29a) of the the first clutch (5) and / or the second clutch (6) radially supported.

10. Drive unit (30) for a drive train of a motor vehicle, with the

Coupling system (2) according to claim 8 or 9 and a transmission device (26), wherein a first transmission input shaft (27a) of the transmission device (26). is connected to a clutch component (28b) of the first clutch (5) and a second transmission input shaft (27b) of the transmission device (26) is rotatably connected to a clutch component (29b) of the second clutch (6).