WO2018145690A1

WO2018145690A1 - Actuation device for a clutch, and production method

Info

Publication number: WO2018145690A1
Application number: PCT/DE2018/100018
Authority: WO
Inventors: Manuel BAßLER; Philippe Wagner
Original assignee: Schaeffler Technologies AG & Co. KG
Priority date: 2017-02-10
Filing date: 2018-01-12
Publication date: 2018-08-16
Also published as: CN110268179B; DE112018000754A5; CN110268179A

Abstract

The invention relates to an actuation device for a clutch, comprising a cylinder receiving area, a piston unit which is arranged in the cylinder receiving area in a linearly movable manner in a direction parallel to a rotational axis, and a component which is formed about the rotational axis and in which the cylinder receiving area is formed. According to the invention, the rotationally symmetrical component consists of a support which is designed to have a molding into which an insert in the form of a separate component is inserted, and the cylinder receiving area is molded into the insert. The invention also relates to a method for producing such an actuation device.

Description

Actuator for a clutch and manufacturing process

The present invention relates to an actuating device for a clutch, in particular an actuating device comprising a cylinder receptacle, a piston unit which is arranged to be linearly movable in the cylinder receptacle in a direction parallel to a rotation axis, and a rotationally symmetrical component formed around the rotation axis, in which the cylinder receptacle is trained.

The present invention also relates to a use of the actuating device, a hybrid module and a motor vehicle. The present invention also relates to a method of manufacturing an actuator for a clutch.

From the prior art motor vehicles with hybrid drive and hybrid modules for drive trains of motor vehicles are known. Such motor vehicles have an internal combustion engine and an electric machine. By means of the hybrid module it is ensured that the internal combustion engine can be coupled with the electric machine by means of a separating clutch. Likewise, the internal combustion engine with the separating clutch can be decoupled from the electric machine. Furthermore, the hybrid module has a double clutch, which serves to effect a technical coupling and decoupling of the hybrid drive from a transmission of the vehicle. In other words, the separating clutch causes the coupling between the electric machine and the internal combustion engine, wherein the dual clutch then couples the hybrid module with the transmission or decoupled from this.

Current hybrid modules having a triple clutch, that is, a disconnect clutch and a first part clutch and a second part clutch of a double clutch, as described above, have an actuator for a disconnect clutch on a hybrid powertrain side of the hybrid module and actuators for the hybrid powertrain the first sub-clutch and the second sub-clutch on a coupled to the transmission of the hybrid drive train side of the hybrid module. In other words, in novel hybrid applications, an actuating device for the separating clutch is needed, which sits between the engine and clutch. The actuating device usually comprises a so-called KO-slave cylinder, also known as KO-CSC, where "KO" stands for the "zeroth" or actually better "third" clutch, in addition to the so-called K1 / K2 double clutch, where "K1" and " K2 "stands for the first part clutch and the second part clutch, and where" CSC "is the abbreviation for" Concentric Slave Cylinder. "The actuating device for the separating clutch is usually designed as a central release.

The connection or attachment of this actuator to a carrier sitting on an intermediate wall (housing) of the hybrid module, for example, via screw. It is necessary here that these elements together have a very high rigidity. To achieve this, the carrier is usually designed as a steel part. It is also known from the prior art that the KO-CSC, including a cylindrical receptacle (pressure space sleeve) surrounding the KO-CSC, is completely installed in the carrier. The cylinder receptacle may in particular be annular. A disadvantage of this construction is that when the cylinder receiving the actuator for the clutch (separating clutch) is integrated into the support member made of steel, it is not possible to ensure the usually very high demands on the surface of the cylinder receptacle, for example, the seal of the piston unit Do not overuse the actuator over its lifetime and / or to ensure the maximum permissible towline and friction over the service life. This will be explained in detail later in connection with FIG. The specification of the cylinder mount with respect to the surface must be very accurate, so that the seal over the life does not wear excessively and this, and the maximum permissible drag gap and friction requirement over the life, can be guaranteed.

It is therefore an object of the present invention to provide an actuator for opening and / or closing a clutch that is robust and has a long service life. This object is achieved by an actuating device comprising the features of claim 1.

It is also an object of the present invention to provide a use for such an actuator. This object is achieved by a use that the

Features of claim 6.

It is also an object of the present invention to provide a hybrid module for a

To provide motor vehicle with such a durable actuator.

This object is achieved by a hybrid module that the

Features of claim 7.

It is another object of the present invention to provide a motor vehicle with a

Hybrid module with such a durable actuator to provide.

This object is achieved by a motor vehicle, which is the

Features of claim 8. It is also an object of the present invention to provide a method of manufacturing a robust and durable actuator for a clutch.

This object is achieved by a method comprising the features of claim 9. The actuating device according to the invention for opening and / or closing a clutch comprises a cylinder receptacle and a piston unit, which in the

Cylinder receiving in a direction parallel to a rotation axis is arranged linearly movable. The actuating device according to the invention also comprises a formed around the axis of rotation component in which the cylinder receptacle is formed. According to the invention, the component consists of a carrier which has formed a shape into which an insert (inlet) is inserted as a separate component and in use the cylinder receptacle is formed. By this construction, thus the carrier and the insert with the cylinder holder as separate components formed and the carrier is formed such that it can be used with the

Hold cylinder receptacle at a predetermined position. The advantage here is that the surface quality of the cylinder mount for the CSC can be improved compared to the prior art described above. The clutch may be a disconnect clutch. In one embodiment, the

Actuator designed as Zentralausrücker.

In one embodiment, the carrier is made of a first material and the insert with the cylinder receptacle made of a second material. Preferably, the first material has particularly good stiffness properties, such as steel, and the second material particularly good machining properties, such as

For example, plastic or aluminum, on. In the implementation of the

Use with the cylinder receptacle in the steel support is therefore preferably resorted to proven manufacturing processes and the surface quality of the

Cylinder mount for the CSC can be guaranteed. In one embodiment, at least one holding element for holding the insert in the carrier engages in a recess of the carrier, in particular for axial fixation of the insert with the cylinder receptacle to the carrier. Such a recess is easy to shape and allows a particularly simple and quick positioning of the insert on the carrier. The retaining element is a retaining ring. In the case of an annular cylinder receiving the indentation is annular.

In a further embodiment, at least one sealing element (sealing ring) is arranged between the insert and the carrier, which seals the insert with the cylinder receptacle relative to the carrier. In particular, at least one sealing element (sealing ring) is preferably arranged in a recess (annular groove) of the cylinder receptacle and / or at least one sealing element (sealing ring) in a recess (annular groove) of a wall section of the carrier of the hybrid module. More preferably, the at least one sealing ring is biased so that geometric tolerances of the sealing elements and associated

Mounting problems can be reduced, thereby simplifying the installation considerably. The actuator according to the invention can be used in particular in a hybrid module with a triple clutch for an internal combustion engine and a transmission of a motor vehicle, as described above.

The hybrid module according to the invention for a motor vehicle has an actuating device for opening and / or closing the clutch according to one of the embodiments described above. The clutch may be a disconnect clutch. The hybrid module further comprises an electric machine having a stator and a rotor, a dual clutch having first and second split clutches adapted to detachably couple the hybrid module to a transmission of the motor vehicle, and a disconnect clutch adapted to an internal combustion engine of the motor vehicle separable with the hybrid module to couple. The cylinder receptacle may in particular be annular.

The motor vehicle according to the invention has a hybrid module according to one of the embodiments described above. The method according to the invention for producing an actuating device for opening and / or closing a clutch comprises the following steps: forming a formation in a carrier such that the carrier is substantially rotationally symmetrical about an axis; Forming an insert, wherein a cylindrical receptacle is formed, and an outer profile of the insert is designed such that the outer profile is at least partially positive fit with inserted insert with the shape of the carrier; Attaching at least one sealing element (sealing ring) in the shape of the carrier; Inserting the insert into the shape of the carrier; and attaching a retaining element in a recess of the carrier, so that the insert is supported in the shape of the carrier. The molding of the insert with the cylinder receptacle can be carried out by a suitable known method. For example, the insert may be manufactured in die cast if its material is aluminum, or made in an injection molding process, if its material is plastic. The cylinder mount of a CSC is currently completely made of plastic or a combination of a steel sleeve as an inner cylinder receiving wall with an aluminum housing as the outer cylinder receiving wall.

In the following, embodiments of the invention and their advantages with reference to the accompanying drawings will be explained in more detail. The proportions in the figures do not always correspond to the actual size ratios, as some shapes are simplified and other shapes are shown enlarged in relation to other elements for ease of illustration. It shows:

1 is a schematic view of a hybrid module of a motor vehicle with a triple clutch with an actuator according to a

Embodiment of the invention;

FIG. 2 shows the actuating device according to FIG. 1 in an enlarged view; FIG.

3 shows the actuating device according to FIGS. 1 and 2 in an enlarged perspective view; Fig. 4 is a schematic cross section, as the carrier of a

Actuator may be attached to a housing according to the prior art;

Figure 5 is a schematic cross section of how the carrier of an embodiment of the actuator according to the invention can be attached to a housing. and

Fig. 6 is an enlarged schematic cross section and a section of a

Embodiment of the actuating device according to the invention.

For identical or equivalent elements of the invention, identical reference numerals are used. Furthermore, for the sake of clarity, only reference symbols are shown in the individual figures, which are required for the description of the respective figure.

Figure 1 shows a schematic view of a possible embodiment of a hybrid module 1 for a motor vehicle not shown in detail. The hybrid module 1 comprises a housing 3, a stator 4 and a rotor 120 with magnets 5 of an electric machine comprising the stator 4 and the magnet 5. The rotor 120 is arranged around a rotary shaft 140 through which a central axis of rotation A passes.

The hybrid module 1 also includes a triple clutch. The triple clutch comprises a first clutch 91 and a second clutch 92 having double clutch 9, which is adapted to the hybrid module 1 separable with a transmission 6 of the motor vehicle to couple and a clutch 7, which is adapted to an internal combustion engine 2 of the motor vehicle separable to couple with the hybrid module 1. The position of the internal combustion engine 2 and the transmission 6 with respect to the hybrid module 1 is indicated only very schematically by a respective arrow in Figure 1. The clutch 7 is according to the illustration of Figure 1 is a disconnect clutch.

As can be seen, the dual clutch 9 with its two partial clutches 91, 92 and the separating clutch 7 are arranged both radially and axially with respect to the axis of rotation A and within the rotor 120. The separating clutch 7 and the double clutch 9 are used essentially in the rotor 120. In this case, the separating clutch 7 lies against a first wall 51 of the rotor 120 and an extension 56 connected to the rotary shaft 140 (inner disk carrier, since this has the toothing on the inner disks at the inner diameter). The first part coupling 91 is located on a second wall 52 of the rotor 120 and on a further extension 57 (outer disk carrier, since this has the teeth on the outer diameter of the slats) of a first gear hub 61 with internal teeth for the transmission shaft 1 (not shown). The second part of clutch 92 is also on the second wall 52 of the rotor 120 and on a further extension 58 (outer disk carrier) of a second gear hub shaft 62 at.

The first and the second partial clutch 91, 92 are arranged one behind the other in the axial direction AR, wherein the double clutch 9 in the radial direction R is further away from the axis of rotation A of the rotor 120 than the separating clutch 7. In other words, the separating clutch 7 in the radial direction R. closer to the rotation axis A of the rotor 120 arranged as the double clutch. 9 This results in a particularly compact design for the embodiment of the hybrid module 1 shown in Figure 1, since the space required for the rotor 120, the first part clutch 91 and second part clutch 92 of the dual clutch 9 and the clutch 7 is reduced, since the individual assemblies radially or are nested axially one inside the other. Accordingly, the dual clutch 9 and the separating clutch 7 may be arranged integrated within the rotor 120. Due to the radial and axial nesting of the double clutch 9 and the separating clutch 7, a particularly compact construction of the hybrid module 1 is ensured. It is thus possible to use the hybrid module 1 even in very small vehicles or in vehicles with very little installation space and / or transversely mounted internal combustion engine.

The separating clutch 7 can be seen arranged on the first wall 51 of the rotor 120, that is, the first wall 51 has a toothing, with the lamellae 71 of the separating clutch 7 frictionally cooperate with each other and thus positively with the toothing. The extension 56 of the rotary shaft 140 has an internal toothing, with which the lamellae 71 of the separating clutch 7 frictionally cooperate with each other and thus form-fitting manner with the internal toothing.

Likewise, the first partial clutch 91 and the second partial clutch 92 are arranged on the second wall 52 of the rotor 120, that is, the fins 93 of the partial clutches 91, 92 cooperate by means of an internal toothing on the second wall 52 of the rotor 120. The lamellae 93 of the first partial clutch 91 also interact with an external toothing of the extension 57 of the first transmission hub 61. Likewise, the lamellae 93 of the second partial coupling 92 also interact with an external toothing of the extension 58 of the second transmission hub 62. In the context of the present invention, the term internal toothing or external toothing means that an internal toothing is executed on the axis of rotation A and an external toothing is directed away from the axis of rotation A. Accordingly, the dual clutch 9 and the separating clutch 7 are provided between substantially the walls 51, 52 of the rotor 120. The rotor 120 assumes with the walls 51, 52, the function of the support for the slats 71 of the clutch 7 and the fins 93 of the dual clutch 9. The two walls 51, 52 of the rotor 120 are shown concentrically arranged, said the external toothing of the first wall 51 is arranged opposite the internal toothing of the second wall 52. It should be noted that the lamellae 71, 93 of the clutches 7, 91, 92 have also on both sides also a topology formed, which interacts with the corresponding internal toothing or the corresponding external toothing substantially form-fitting manner.

The hybrid module 1 has an actuating device 20 which, for example, is designed as a central release device and is shown enlarged in FIG. The actuator 20 is used to open and / or close the clutch 7. Accordingly, the hybrid module 1, a further actuator 951, which is associated with the first part of the clutch 91 91 of the dual clutch 9 and a further actuator 961, the second part of the clutch 92 of the dual clutch 9 assigned is. The actuators 20, 951, 961 usually comprise several components, such as a bearing, pressure receiver, pressure transducer in various configurations. Pressure transducers, thrusters can also have several components, including cylinders and / or shaped sheets. For reasons of illustration, in FIG. 1, the arrowheads of the arrows to the actuating devices 951, 961 only point to the respective pressure transmitters which, when actuated, pass on the respective pressure to the first partial coupling 91 or to the second partial coupling 92. For triple clutch applications, in addition to the K1 bearing of the actuating device 951 for the first partial clutch 91 and the K2 bearing of the actuator 961 for the second partial clutch 92 so also another bearing, namely the actuating bearing 21, necessary, which rotation about the axis A allows and, together with the actuator 20, the burner 2 separates from the electric motor 4 + 5 or this connects. In today's design of the triple clutch is the actuation bearing 21 (in technical jargon also called K0 bearing, where "K0" for the "zeroth" or actually better "third" clutch is) on the engine side 2 (combustor) and thus against the K1 - / K2 double clutch ("K1" and "K2" stand for the first part clutch and the second part clutch), which is arranged on the transmission side of the triple clutch 3. In the illustration of Figure 1, the larger bearing on the right side of the K1 - Bearing of the actuating device 951. The pressure pot of the K1 bearing that is actuated engages through the disk set 71, 93 of the K2 coupling 92 through, with a cooperating external teeth is not shown.

According to Figures 1 and 2, the actuator 20 (Zentralausrücker) for actuating the separating clutch 7, a pressure sensor 25 (KO-slave cylinder, KO-CSC), a pressure transmitter 23 and a switch between the pressure transducer 25 and 23 pressure transducer actuation bearing 21. The pressure receiver 25 is arranged within a cylinder receptacle 24. The cylinder receptacle 24 is in turn arranged directly within a carrier 22, for example steel carrier. The carrier 22 is also associated with the actuator 20. The carrier 22 represents a component 8, which has formed according to the invention a molding 28 into which an insert 10 is inserted as a separate component and in the insert 10, the cylinder receptacle 24 is formed. Further details will be described in connection with FIGS. 5 and 6.

The pressure receiver 25 comprises a piston unit 1 1, which is arranged in the cylinder receptacle 24 in a direction AR parallel to a rotational axis A linearly movable. Adjacent to a sealing element 15 (sealing ring), a pressure chamber 29 is formed which is surrounded by an inner wall 27. The piston unit 1 1 usually comprises a piston body 13 (plunger) to which the sealing element 15 is arranged and prevents a hydraulic fluid from the pressure chamber 29 exits at the point where the piston plunger 13 enters the pressure chamber 29 and extends out of the pressure chamber 29 , Another sealing element 244 in the form of a sealing ring, in particular O-ring, is arranged in a recess (annular groove) of the carrier 22.

The actuating bearing 21 usually comprises, inter alia, an outer ring 21 1, an inner ring 213 and a plurality of roller bodies 215 arranged therebetween, which have the shape of a ball in the embodiment shown here. The actuating bearing 21 is suitable for installation in the actuator 20 for acting on the pressure transducer, for example, as shown here in Figure 1, a pressure pot 23. Through the pressure pot 23, the separating clutch 7 of the hybrid module 1 is actuated.

The pressure receiver 25 receives a compressive force which it transmits via the outer ring 21 1 to the actuating bearing 21. The pressure pot 23 serves as a transmission element, the is acted upon axially by an actuating force from the pressure receiver 25, in order then to transmit this actuating force to the separating clutch 7. Upon actuation of the actuator 20, the pressure force is applied to the entire actuator 20 and the entire actuator 20 disengages, if the actuator 20 is designed as a releaser.

The hybrid module 1 can be actuated via a low-pressure system or via a high-pressure system, for example with a pressure from 1 .5 bar. For example, in the case of a low pressure system, the actuating device 20 for the clutch as Zentralausrücker and the actuators 95, 96 for the dual clutch 9 can be actuated by means of a rotary input; For example, the working pressure of the working fluid is 14 bar. For example, in the case of a high-pressure system, the actuators 20, 95, 96 are all operable as a central release; For example, the working pressure of the working fluid is 38 bar. However, the invention is not limited to these embodiments of the actuators 20, 95, 96 for low and high pressure systems. For example, in the embodiment according to FIG. 1, a high-pressure system is shown.

Figure 3 shows the embodiment of an actuator 20 according to the invention according to Figures 1, 2, 5 and 6 in an enlarged perspective view. A conduit 32 for the conduit prevents the conduit from being forced axially outward of the cylinder surface by the fluid. Sealing element carrier (sealing ring carrier) 34 prevent the gap extrusion of the sealing element (sealing ring) 15 in the gap to the piston body 13. All other elements are described in connection with Figures 1, 2, 5 and 6.

Figure 4 shows a section of a schematic cross section of a hybrid module 1 with a known from the prior art, completely in the carrier 22 of an actuator 20 (Zentralausrücker) a (separating) clutch 7 integrated cylinder receptacle 24. The carrier 22 and the cylinder receptacle 24 are thus built in one piece. The carrier 22 is screwed to a housing 30 and consists for example entirely of steel. This is due to the outer surfaces of the cylinder receiving 24 opposite outer surfaces of the Carrier 22 a matching holding profile 17 formed on which the pressure taker 25 (KO- slave cylinder, KO-CSC) can be supported or received.

As described above, currently in the prior art, the cylinder receptacle 24 of a pressure transducer 25 (KO-slave cylinder, KO-CSC) is formed entirely of plastic or a combination of a steel sleeve as the inner pressure chamber wall 27 with an aluminum housing as the outer pressure chamber wall 26. The steel sleeves can be honed to their outer diameter and then joined to the outer aluminum housing. However, the cylinder receptacle 24 in the carrier 22 consists of the outer pressure chamber wall 26 and the inner pressure chamber wall 27, which usually have a very small distance, for example less than 10 mm, to each other and must be at least equal to. For processing the tangentially circumferential cylinder receptacle 24 in such a small annular gap of the carrier 22, however, there is usually no series part or no production method which could ensure the surface requirements on the cylinder receptacle 24. Thus, the above-described requirement for the surface of the cylinder receptacle 24 can not be guaranteed in terms of manufacturing technology if the cylinder receptacle 24 has to be completely integrated within the carrier 22.

For reasons of better representation of the cylinder receptacle 24 which is also positioned on the carrier 22 actuating bearing 21 is not shown.

FIG. 5 and enlarged in FIG. 6 show a section of an embodiment of the actuating device 20 according to the invention. The actuating device 20 comprises a cylinder receptacle 24 (annular pressure pickup receptacle) and a piston unit 1 1 (see FIG. 2) which is arranged to be linearly movable in the cylinder receptacle 24 in a direction AR parallel to a rotation axis A. The piston body 13 is an annular piston in the illustrated embodiment. The actuating device 20 additionally comprises a rotationally symmetrical component 8, which is formed around the axis of rotation A and in which the cylindrical receptacle 24 is formed.

According to the invention, the rotationally symmetrical component 8 consists of a carrier 22, which has a shape in which an insert 10 (inlet) is used as a separate component and in the insert 10, the cylinder receptacle 24 is formed. The carrier 22 and the insert 10 for the cylinder receptacle 24 are thus formed as separate components. The carrier 22 is formed so as to support the separate insert 10 at a predetermined position. It is advantageous that the surface quality of the cylinder receptacle 24 for the CSC 25 can be improved compared to the prior art described above. The pressure receiver 25 usually comprises a piston unit 1 1, which is arranged in the cylinder receptacle 24 in a direction AR parallel to a rotational axis A linearly movable. The piston unit 1 1 usually comprises a plunger 13 (piston body), to which a sealing element 15 (sealing ring) is arranged, which prevents a hydraulic fluid from escaping from the cylinder space at the point where the piston body 13 into the pressure chamber 29 of the pressure transducer 25 (FIG. KO-slave cylinder, K0-CSC) retracts or extends out of the pressure chamber 29. The piston unit 1 1 is surrounded by an outer pressure chamber wall 26.

In one embodiment, the carrier 22 is made of a first material and the insert 10 is made with the cylinder receptacle 24 of a second material. Preferably, the first material has particularly good stiffness properties, such as steel, and the second material of the insert 10 particularly good machining properties, such as plastic or aluminum on.

The carrier 22 for the actuator 20 is attached directly to the housing 30 of the hybrid module 1. The positioning of the insert 10 relative to the carrier 22 takes place in the radial direction R through the surface of the carrier 22 surrounding the insert 10. Preferably, essential regions of the outer surfaces of the insert 10 facing the carrier 22 can be arranged in a form-fitting manner on the corresponding outer surfaces of the carrier 22. In a preferred embodiment, at least one holding element (positioning means) is provided for unambiguous positioning, in particular for axial fixing, of the insert 10 with the cylinder receptacle 24 on the carrier 22. The holding means is a securing ring 243 and engages in a recess 242 (annular groove) of the carrier 22 a. This allows a particularly simple positioning of the insert 10 on the carrier 10th In a further embodiment, at least one sealing element (sealing ring) 244, 245 is arranged between the insert 10 and the carrier 22, which seals the insert 10 with the cylinder receptacle 24 with respect to the carrier 22 or at the points of the cylinder receptacle 24 where the sealing elements 244, 245 are arranged, the high pressure section seals to the outside. In the illustration according to FIGS. 5 and 6, two radially arranged sealing rings 244, 245 (O-rings) are provided, which seal the insert 10 with the cylinder receptacle 24 to the carrier 22 at the corresponding points. The sealing rings 244, 245 are formed for example as O-rings. The sealing element 244 is arranged on the cylinder receptacle 24. The sealing element 245 is arranged on a wall section of the carrier 22 of the hybrid module 1. Preferably, the two sealing elements 244, 245 are received in recesses (annular grooves) in the cylinder receptacle 24 or in a wall section of the support 22. More preferably, the sealing elements 244, 245 are biased so that geometrical tolerances of the sealing elements 244, 245 and associated assembly problems can be reduced, as already described above.

The actuating device 20 according to the described embodiments can be used in a hybrid module 1 (see FIG. 1) with a triple clutch 7, 91, 91 for an internal combustion engine and a transmission of a motor vehicle. The inventive method for producing an actuator 20 for a clutch 7 comprises the following steps: forming a formation 28 in a carrier 22, that the carrier 22 is rotationally symmetrical about an axis A; Forming an insert 10, wherein a cylindrical receptacle 24 is formed, and an outer profile 19 of the insert 10 is designed such that the outer profile 19 is at least partially positive fit with the insert 28 with the formation 28 of the carrier 22 with inserted insert 10; Attaching at least one sealing ring 244 in the formation 28 of the carrier 22; Inserting the insert 10 into the formation 28 of the carrier 22; and attaching a holding element 243 in a recess 242 of the carrier 22, so that the insert 10 is held in the formation 28 of the carrier 22. The molding of the insert 10 may be performed by any suitable known method. For example, the insert 10 is in a die-cast manufactured, if its material is aluminum, or the insert 10 is produced in an injection molding process, if its material is plastic.

For reasons of clarity, the pressure receiver 25 (K0 slave cylinder, KO-CSC) is not shown in FIGS. 5 and 6. Although the present invention has been described above with reference to an embodiment, it should be understood that various embodiments and changes can be made without departing from the scope of the present invention as defined in the appended claims. In particular, the actuator according to the invention can be used in all applications in which a high stiffness of the slave cylinder (CSCs) is required, ie not only for clutches, in particular disconnect couplings, of hybrid modules in motor vehicles.

For further features and advantages of the present invention, reference is expressly made to the disclosure of the drawings.

LIST OF REFERENCE NUMBERS

1 hybrid module

2 internal combustion engine

3 housing

4 stator

5 magnet

51 first wall

52 second wall

53 front wall

56 extension

57 extension

58 extension

6 gears

61 first gear hub

62 second gear hub

7 clutch (disconnect clutch)

71 internally toothed lamellas

8 rotationally symmetrical component

9 double clutch

91 first partial clutch (K1 clutch)

92 second partial clutch (K2 clutch)

93 externally toothed lamellae

95 actuating device for first part clutch

951 Bearing (K1 bearing) of the actuating device for the first part-clutch

96 actuating device for second partial clutch

961 Bearing (K2 bearing) of the actuating device for second partial coupling

10 use

1 1 piston unit

13 piston body (plunger)

15 sealing element

17 holding profile

19 outer profile 20 actuating device for separating clutch

21 actuating bearing (release bearing, KO bearing)

21 1 outer ring

213 inner ring

215 rolling elements

22 carriers

23 pressure pot

24 cylinder mount (annular cylinder mount)

242 indentation

243 retaining element, retaining ring

244 sealing element (sealing ring)

245 sealing element (sealing ring)

25 Receivers, knock-down cylinder, KO-CSC

26 outer pressure chamber wall

27 inner wall

28 shape

29 pressure room

30 housing

32 retaining plate

34 sealing element carrier (sealing ring carrier)

120 rotor

40 wave

A rotation axis

AR axial direction

R radial direction

Claims

claims

1 . Actuating device (20) for opening and / or closing a clutch (7) comprising

a cylinder receptacle (24),

a piston unit (1 1) which is arranged in the cylinder receptacle (24) in a direction (AR) parallel to a rotational axis (A) linearly movable, and

a formed around the axis of rotation (A), component (8), in which the cylinder receptacle

(24) is formed

characterized in that

the component (8) consists of a support (22), which has a formation (28), into which an insert (10) is inserted as a separate component and in the insert (10), the cylinder receptacle (24) is formed.

Second actuating device (20) according to claim 1, wherein the carrier (22) made of a first material and the insert (10) with the cylinder receptacle (24) are made of a second material.

3. Actuator (20) according to claim 2, wherein the first material of the carrier (22) steel and the second material of the insert (10) is aluminum or plastic.

4. Actuating device (20) according to any one of the preceding claims, wherein at least one holding element (243) for holding the insert (10) in the carrier (22) in a recess (242) of the carrier (22) engages, and wherein the holding element (243 ) is a snap ring.

5. Actuating device (20) according to any one of the preceding claims, wherein at least one sealing element (244, 245) between the insert (10) and the carrier (22) is arranged.

6. Use of the actuating device (20) according to any one of the preceding claims in a hybrid module (1) with a triple clutch (7, 91, 92) for an internal combustion engine and a transmission of a motor vehicle.

7. hybrid module (1) for a motor vehicle, comprising a stator (4) and a rotor (120) having electrical machine, a first and second part clutch (91, 92) having a double clutch (9), which is adapted to Hybrid module (1) separably coupled to a transmission (6) of the motor vehicle, and a disconnect clutch (7) adapted to disconnect an internal combustion engine (2) of the motor vehicle separable with the hybrid module (1),

wherein the hybrid module (1) has an actuating device (20) for opening and / or closing the clutch (7) according to one of claims 1 to 5.

8. Motor vehicle having a hybrid module (1) according to claim 7.

9. A method for producing an actuating device (20) for opening and / or closing a clutch (7) characterized by the following steps:

Forming a formation (28) in a carrier (22) such that the carrier (22) is largely rotationally symmetrical about an axis (A);

Forming an insert (10), wherein a cylinder receptacle (24) is formed, and an outer profile (19) of the insert (10) is designed such that the outer profile (19) with inserted insert (10) at least partially form-fitting manner with the formation ( 28) of the carrier (22);

Attaching at least one sealing element (244, 245) in the formation (28) of the carrier (22);

Inserting the insert (10) into the formation (28) of the carrier (22); and

Attaching a holding element (243) in a recess (242) of the carrier (22), so that the insert (10) in the formation (28) of the carrier (22) is supported.

10. The method of claim 9, wherein the insert (10) is produced in a die-cast, if its material is aluminum, or is produced in an injection molding process, if its material is plastic.