WO2011116740A1

WO2011116740A1 - Dual clutch

Info

Publication number: WO2011116740A1
Application number: PCT/DE2011/000216
Authority: WO
Inventors: Florian Krebs; René Daikeler; Heiko Madlinger
Original assignee: Schaeffler Technologies Gmbh & Co. Kg
Priority date: 2010-03-25
Filing date: 2011-03-03
Publication date: 2011-09-29
Also published as: CN102939472A; CN102939472B; DE112011101026B4; DE102011012896A1; DE112011101026A5

Abstract

A dual clutch for coupling an engine-side input shaft to a first transmission-side output shaft and/or to a second transmission-side output shaft has a first clutch (12) which has a first press-on plate (16) which is movable axially relative to a first counterplate (18) and is intended for the coupling of a first clutch disc (20), which is connected to the first output shaft. Furthermore, the dual clutch has a second clutch (14) which has a second press-on plate (26) which is movable axially relative to a second counterplate (28) and is intended for the coupling of a second clutch disc (30), which is connected to the second output shaft. A clutch cover (42) is connected to the first counterplate (18) and to the second counterplate (28). Furthermore, an actuating device (32) for moving the first press-on plate (16) and/or the second press-on plate (26) is provided, wherein a cover bearing (46) is arranged between the actuating device (32) and the clutch cover (42). According to the invention, the cover bearing (46) and the clutch cover (42) are configured in such a manner that the cover bearing (42) can enter the clutch cover (42) in the direction of the drive shaft. The cover bearing (46) is additionally connected to the clutch cover (42) via a locking element (48) for locking the cover bearing (46) to the clutch cover (42) in such a manner that actuating forces of the actuating device (32) can be conducted at the clutch cover (42) via the locking element (48). As a result, the actuating device (32) can be fitted as late as possible and/or removed retrospectively for maintenance and adjustment purposes, thus simplifying the fitting and/or removal.

Description

Double coupling

The invention relates to a double clutch, by means of which a motor-side input shaft with two different transmission-side coaxially arranged output shafts can be coupled substantially traction interruption free.

From DE 101 55 458 A1 a double clutch is known with the aid of which a motor-side input shaft can be coupled to a first gear-side output shaft and / or a second gear-side output shaft. The dual clutch has a first clutch and a second clutch, each having a relative to a first counter-plate axially movable pressure plate for coupling a clutch disc connected to the respective output shaft. The pressure plates are actuated by means of an actuating device which pivots within the dual clutch connected to the respective pressure plate actuating pot to move the respective pressure plate on the associated counter-plate. The counter-plates are bolted to a clutch cover, wherein the clutch cover is supported via a cover bearing on the actuator. The clutch cover is deep-drawn in the region of the cover bearing in the direction of the transmission, wherein on the extending in the axial direction deep-drawn portion of the clutch cover, a radially inwardly projecting shoulder is provided to connect the cover bearing captive with the clutch cover.

There is a constant need that dual clutches can be assembled and / or disassembled in an easy to assemble manner, for example to facilitate adjustments to be made within the dual clutch.

It is the object of the invention to provide a double clutch, with the aid of an assembly and / or disassembly of the double clutch can be simplified.

The object is achieved according to the invention by the features of claim 1.

Preferred embodiments of the invention are specified in the subclaims.

The double clutch according to the invention for coupling an engine-side input shaft with a first transmission-side output shaft and / or a second transmission-side output shaft has a first clutch which has a relative to a first counter-plate axially having movable first pressure plate for coupling a first clutch connected to the first output shaft first clutch plate. Furthermore, the dual clutch has a second clutch, which has a second pressure plate, which is axially movable relative to a second counterplate, for coupling a second clutch disk connected to the second output shaft. With the first counter-plate and the second counter-plate, a clutch cover is connected. Further, an actuating device for axially moving the first pressure plate and / or the second pressure plate is provided, wherein a cover bearing is arranged between the actuating device and the clutch cover. According to the invention the cover bearing and the clutch cover are designed such that the cover bearing in the direction of the drive shaft to be introduced into the clutch cover, and the cover bearing is connected to the clutch cover via a locking element for locking the cover bearing with the clutch cover such that actuation forces on the locking element the actuator can be derived on the clutch cover.

Characterized in that the cover bearing and thus the actuator introduced from outside the dual clutch in the double clutch, in particular can be inserted later, it is possible to mount the actuator independently of the other components or to dismantle. As a result, it is possible, in particular, to subsequently set the actuation pots by subsequently plastically deforming the actuation pots, for example, inside the double clutch after assembly. For such adjustment and maintenance work, it is not necessary to disassemble the entire dual clutch, but only to assemble the actuator at a much later time, or to subsequently pull the actuator out of the clutch cover. As a result, the actuator can be installed as late as possible and / or subsequently dismantled for maintenance and adjustment purposes, so that the assembly and / or disassembly is simplified. By the locking element ensures that the cover bearing and / or the actuator can be firmly positioned or fixed in their position relative to the clutch cover in the axial direction and / or in the circumferential direction. The locking element is in this case designed so stable that the forces occurring during actuation of the Betätigungsstöpfe can be removed from the actuator via the locking element to the clutch cover. The locking element is in particular designed such that the locking element can remove all operating forces of the actuator, so that it is not necessary to have to take into account a frictional engagement between the cover bearing and the clutch cover, for example due to a press fit. However, it is also possible to press the cover bearing into the clutch cover in order to provide a particularly stable connection for the required power transmission between reach the cover bearing and the clutch cover. As a result, the double clutch has maintenance and assembly-friendly onteability or disassembly capability without impairing the reliable removal of occurring forces. At the same time the space of the double clutch is not significantly increased.

The respective clutch disc can be rotatably connected via a toothing with the respective output shaft, but axially movably connected. The first counterplate and / or the second counterplate may protrude radially inward as a separate component from a radially outer housing wall. The first counterplate and the second counterplate may be releasably connected to the clutch cover. It is also possible that the first counter-plate or the second counter-plate of the clutch cover and / or a clutch cover axially opposite component, in particular in one piece. For example, one of the counter-plates may be formed by a flywheel connected to the engine-side input shaft and / or an output flange of a dual-mass flywheel connected to the input shaft. The clutch disc can have a friction lining, in particular on axially facing end faces pointing away from one another, in order to bring about frictional contact with both the counterplate and the pressure plate during coupling, wherein the respective counterplate and / or the respective pressure plate may or may not also have a friction lining. The respective pressure plates and counter plates are configured in particular as separate, functionally separate components, so that a so-called "four-plate design" is possible for the double clutch without significantly increasing the installation space In addition, the respective clutch disc may be damped, particularly preferably the dual clutch is designed as a dry directly actuated double clutch, that is, the actuating pots are not with the aid of this provided components pivoted to move the pressure plates axially.

In particular, the clutch cover from a plate with a defined nominal thickness can be produced, the clutch cover rests with the nominal thickness of the top bearing with a maximum. The clutch cover can thereby rest flush against the cover bearing or even be arranged spaced over a gap to the cover bearing. Since the forces applied by the actuator forces can be removed via the locking element, a direct power flow between the cover bearing and the clutch cover is not required, so that the cover bearing with a clearance, in particular H7 / h6 or H8 / h9 in the Clutch cover can be used. In particular, it is not necessary to bend the clutch cover in the region of the cover bearing by deep drawing and / or to extend in the axial direction, the production of the clutch cover in the region of the cover bearing can be greatly simplified. At the same time the construction of the clutch cover can be reduced in the axial direction.

Preferably, the clutch cover has a bearing opening for receiving the cover bearing, wherein the bearing opening is configured such that the bearing opening can be produced with a restriction exclusively from punching and / or turning operations. The bearing opening can be produced, for example, by punching a central opening in the clutch cover, which is then optionally machined again, for example by turning. Further, it is possible, for example, from the bearing opening to punch radially outwardly extending slots in clutch cover, so that form tabs that can be bent out slightly in the axial direction of the plane of the clutch cover to between the clutch cover and the cover bearing contact surfaces on different axial To train levels. As a result, the tilting stiffness between the cover bearing and the clutch cover is increased. After the production of the bearing opening with the final nominal diameter by punching and / or turning a deep drawing is not required. Optionally, thereafter, only slight non-cutting bending process, which change less than 50% by volume of the structure of the bent out part of the clutch cover.

Particularly preferably, the locking element has a variable in the radial direction extent, wherein the locking element is configured in particular as a securing ring. Due to the variability of the locking element in the radial direction, it is possible to use the locking element on a smaller diameter in the clutch cover and then bring to a larger diameter, so that the locking element can be held captive in the clutch cover. At the same time, the locking element can extend radially inward to the extent that the locking element can also abut against the cover bearing. As a result, the actuating device and the cover bearing can be connected captively to the clutch cover. Characterized in that both the cover bearing and the clutch cover can strike the locking element when the actuator generates an actuating force for axially moving a pressure plate, a sufficient force flow capacity is provided by the actuating device via the locking element to the clutch cover. In particular, a tab for axial movement limitation of the locking element between the tab and the clutch cover is provided, wherein the tab is formed in particular by the clutch cover, preferably by punching and bending. Through the tab, for example, a pocket can be formed between the clutch cover and the tab into which the locking element can be inserted. The locking element is thereby limited in its movement in the axial direction or fixed substantially immovable even in the axial direction. The part of the locking element, which is not arranged in the pocket, can form a stop for the cover bearing, by which the cover bearing is connected captively to the clutch cover. The tab may be releasably or permanently connected as an additional component with the clutch cover. The additional tab can be connected, for example by welding, soldering, riveting, screwing and / or pinning with the clutch cover. The tab can also be formed by the clutch cover itself by a corresponding portion of the clutch cover punched example and bent out of the plane of the clutch cover. The locking element has in the circumferential direction in particular a greater extent than the single tab, so that the locking element can be securely positioned between the tab and the clutch cover.

Particularly preferably, the tab for clamping the locking element is axially movable. The tab can, for example, change its distance from the clutch cover by means of a screw so that a locking element arranged between the clutch cover and the tab can be clamped substantially without axial play. This leads to an axial fixation of the locking element with the clutch cover and / or leads to an axially substantially play-free salaried storage of the cover bearing. Furthermore, by a sufficiently high clamping force and a rotation of the locking element can be avoided in the circumferential direction.

Preferably, the locking element is located both on a transmission-side end face of the clutch cover and on a motor-side end face of the clutch cover, wherein the clutch cover in particular has in the axial direction extending shafts. Seen in the circumferential direction, the waves can have alternating wave peaks and wave troughs, wherein the peaks of the wave crests and wave tails can be excavated out of the planes of the clutch cover in the axial direction. A tangent applied to one of the wave crests and / or wave troughs may be substantially orthogonal to the radial direction. Due to the fact that the locking element can abut both the motor-side, and on the transmission-side end face of the clutch cover, the Clutch cover securely received and / or jammed by the locking element. When the clutch cover is corrugated in the circumferential direction, so that a part of the clutch cover is bent more towards the engine and the other parts more towards the gear out of the plane of the clutch cover, the locking member may be configured substantially annular. The locking element may in this case have, in particular, radially projecting fastening lugs, which may rest against the clutch cover in the bent-out regions of the shafts. The attachment lugs can be arranged in particular in a plane.

In a further embodiment, the cover bearing and / or the clutch cover on a projecting in the radial direction approach, wherein the approach using the locking element with the clutch cover or with the cover bearing, preferably releasably connected. For example, the cover bearing may have at its gear-side end a radially outwardly protruding approach, which serves as a stop when the cover bearing is inserted into the clutch cover. This approach can be connected, for example by knurling or flanging with the clutch cover. Furthermore, it is possible to screw or rivet the approach to the clutch cover. In this case, the locking element may for example be designed as a screw or riveting. Accordingly, the clutch cover having a motor side radially inwardly projecting approach to which the cover bearing and / or the actuator can strike when inserting the actuator in the clutch cover. Also in this case, the locking element may be designed for example as a screw, riveting or other releasable or unsolvable fastener.

Preferably, the clutch cover and / or the cover bearing on a recess for positive and / or frictional engagement of the locking element, wherein the recess is designed in particular as a groove for receiving a locking ring. For example, can be formed by the recess between the clutch cover and the cover bearing an axially outwardly opening bevel, in which a particular annular wedge can be introduced as a locking element to frictionally fix the cover bearing with the clutch cover. The wedge may be self-locking or secured by means of a securing element, for example a securing pin. The recess can also be designed as a groove, so that there are two stops in the axial direction for the locking element, by which the locking element is taken captive. In particular, it is possible that the locking element as interlocking in the

Cover bearing and provided in the clutch cover thread is configured. By the locking element in the form of a thread between the cover bearing and the clutch cover, the cover bearing can be screwed and unscrewed in the clutch cover. The thread can be designed in particular self-locking. The axial position of the cover bearing of the actuator relative to the clutch cover can be adjusted precisely.

Particularly preferably, the actuating device has a first piston for the axial movement of the first pressure plate by means of a first actuating pot and a second piston for the axial movement of the second pressure plate by means of a second actuating pot, wherein the actuating travel of the first piston substantially corresponds to the displacement of the first pressure plate and / or the actuating travel of the second piston essentially corresponds to the displacement path of the second pressure plate. As a result, a directly actuated translation-free coupling is formed. A pivoting of the respective operating pot does not take place, so that the corresponding components for enabling pivoting of the respective operating pot can be saved. Assuming an ideally rigid actuating pot the actuating travel of the respective piston corresponds exactly to the displacement of the associated pressure plate. The displacement of the respective pressure plate thus differs from the actuating travel of the associated piston only to the distance in the axial direction by which the associated actuating pot is bent elastically upon actuation of the respective clutch. The double clutch can be constructed much simpler.

Preferably, the actuating means comprises a first annular pressure cylinder for moving the first pressure plate and a second annular pressure cylinder for moving the second pressure plate, wherein the first pressure cylinder and the second pressure cylinder are arranged coaxially with each other. The coaxial arrangement of the ring-shaped pressure cylinder results in a particularly compact and space-saving design for the actuator.

The invention further relates to a transmission line for a motor vehicle with an engine-side input shaft, a first transmission-side output shaft, a second transmission-side output shaft and a dual clutch for coupling the input shaft to the first output shaft and / or the second output shaft, wherein the dual clutch, as vorste- described, can be trained and further educated. Due to the double clutch, the actuating device can be mounted as late as possible for maintenance and adjustment purposes and / or dismantled subsequently, so that the assembly and / or disassembly is simplified.

The invention will be explained by way of example with reference to the accompanying drawings based on preferred embodiments. Show it:

1 is a schematic sectional view of a dual clutch in a first embodiment,

2 shows a schematic sectional view of a double clutch in a second embodiment,

3 is a schematic detail view of the dual clutch of FIG. 2,

4 shows a schematic sectional view of a double clutch in a third embodiment,

5 shows a schematic sectional view of a double clutch in a fourth embodiment,

6 is a schematic sectional view of a double clutch in a fifth embodiment,

7 is a schematic sectional view of a double clutch in a sixth embodiment,

Fig. 8 is a schematic sectional view of a double clutch of a seventh embodiment and

Fig. 9 is a schematic sectional view of a double clutch in an eighth embodiment. The dual clutch 10 shown in FIG. 1 has a first clutch 12 and a second clutch 14. The first clutch 12 has a first pressure plate 16 which is axially movable to a first counter-plate 18 in order to couple a clutch disc 20 arranged between the first pressure plate 16 and the first counter-plate 18. The first clutch disc 20 has friction linings 22, by way of which the frictional engagement between the first counterplate 18 and the clutch disc 20 and between the first pressure plate 16 and the clutch disc 20 can be produced. The first clutch plate 20 may be rotatably connected via a toothing 24 with a first output shaft, not shown, but axially displaceable. Accordingly, the second clutch 14 has a second pressure plate 26 which is axially displaceable to a second counter-plate 28 to frictionally couple a second clutch disc 30 arranged between the second pressure plate 26 and the second counter-plate 28 via the friction linings 22. The second clutch plate 30 may be rotatably connected via a toothing 24 with a second output shaft, not shown, but axially displaceable.

In order to operate the first clutch 12 and the second clutch 14, an actuator 32 is provided which has a first annular pressure cylinder 34 for disengaging a first piston 35, with the aid of a first operating pot 36 can be moved purely axially to the first pressure plate 16 on the first counter-plate 18 to move. Accordingly, the actuator 32 has a coaxially within the first pressure cylinder 34 arranged second pressure cylinder 38 for disengaging a second piston 39, with the aid of a second actuator pot 40 can be moved purely axially to move the second pressure plate 26 on the second counter-plate 28 to ,

With the first counter-plate 18 and the second counter-plate 28, a coupling pot 42 is connected, which abuts with its radially inwardly directed by punching contact surface 44 produced on a cover bearing 46. By the contact surface 44, a bearing opening is defined, which receives the cover bearing 46. The cover bearing 46 and the coupling pot 42 have in their contact area on a flat surface, so that the cover bearing 46 can be inserted axially into the clutch cover 42 from the outside and pulled out again. The axial fixation of the cover bearing 46 with the clutch cover 42 is carried out with the aid of a designed as a locking ring 48 locking element, which is inserted from radially inside a pocket 50. The pocket 50 which is open in the circumferential direction and radially inward is formed by the clutch cover 42 and an additional lug 52 fixedly connected to the clutch cover 42. The securing ring 48 is thereby connected in a fixed position in the axial direction with the clutch cover 42 and at the same time forms a impact in the axial direction of the cover bearing 46, so that the cover bearing 46 is inserted captive in the clutch cover 42 and in the axial direction preferably substantially free of movement is limited. In order to subsequently dismantle the actuator 32 quickly, the locking ring 48 can be removed and the actuator 32 are pulled out together with the cover bearing 46 of the double clutch 10. In the illustrated embodiment, the clutch cover 42 further comprises a tab made by punching 54, which is bent out of the plane of the clutch cover 42 slightly to form an enlarged contact surface 44 for the clutch cover 42 in the axial direction. This increases the tilting stiffness. The additional tab 52 may be connected to the clutch cover 42, for example via a rivet connection, screw connection, solder connection, welded connection and other detachable or non-detachable connection.

In the embodiment of the double clutch 10 shown in FIG. 2 and FIG. 3, instead of the additional tab 52, only one tab 54 formed by the clutch cover 42 has been provided. This tab 54 does not necessarily have to be produced by stamping, but can also be formed by a wavy configuration of the clutch cover in the circumferential direction, wherein the tab 54 is formed by the respectively formed shaft 56 (FIG. 3). The locking element 48 need not necessarily extend over the entire or substantially the entire circumference, but may also extend over a significantly smaller angular range, which is just large enough so that the locking element 48 both on a motor-side end face 58 and on a disconnected end face 60 can rest.

In the embodiment of the double clutch 10 shown in FIG. 4, the cover bearing 46 has a radially outwardly projecting lug 62, which bears against the motor-side end face 60 of the clutch cover 42. In the illustrated embodiment, the locking element is designed as a screw 64, via which the neck 62, the cover bearing 46 is releasably screwed to the clutch cover 42.

In the embodiment shown in Fig. 5, the locking ring 48 is inserted in a groove 66 of the clutch cover 42. The securing ring 48 can thereby be fixed without straps 54, 52 in the axial direction with the clutch cover 42. The groove 66 is configured such that it can absorb the actuation forces of the actuating device 32 occurring when the clutches 12, 14 are actuated and can be diverted via the clutch cover 42. In the embodiment of the double clutch 10 illustrated in FIG. 6, the clutch cover 42 has tabs 54 bent out both on the engine side and on the transmission side. By the tabs 54, both the contact surface 44 can be increased to increase the tilting stiffness, and the locking ring 48 between the clutch cover 42 and the transmission side projecting tab 54 are limited in its axial movement.

In the embodiment of the double clutch 10 shown in Fig. 7, the clutch cover 42 has a radially inwardly projecting tab 54, which is issued in the form of a bead. The tab / bead 54 can be made, for example, after the cover bearing 46 is inserted into the clutch cover 42. But it is also possible that, as shown in Fig. 8, the flap / bead 54 is configured ramp-shaped, so that the cover bearing 46 can be inserted along the ramp-shaped tab 54 in the clutch cover 42. After insertion of the cover bearing 46, the ramp-shaped tab 54 can snap back radially inward and form a stop against axial falling out of the cover bearing 46. As a result, the cover bearing 46 is captively retained in the clutch cover 42 after assembly of the actuator 32 and the cover bearing 46.

In the embodiment of the double clutch 10 shown in FIG. 9, both the clutch cover 42 and the cover bearing 46 have an outwardly open recess 68, resulting in a substantially wedge-shaped recess between the clutch cover 42 and the cover bearing 46. In the recesses 68 is a particular self-locking wedge 70 is pressed as a locking element, so that the cover bearing 46 is fixed in the axial direction with the clutch cover 42. The wedge 70 may in particular be configured continuously in the circumferential direction and preferably be annular. The wedge 70 may optionally be secured with a securing element, such as a locking pin against axial slipping out.

The cover bearing 46 may also be connected via a locking element in the form of a bayonet lock with the clutch cover 42. For this purpose, for example, a protruding from the cover bearing 46 approach can be used in a corresponding recess of the clutch cover 42 and are rotated radially after insertion in the circumferential direction. After radial rotation, the actuator 32 and / or the cover bearing 46 can be secured against rotation with the clutch cover 42, for example by means of a safety pin. The invention further relates to a double clutch 10, in which in comparison to the above-described embodiments of the double clutch 10, the cover bearing 46 is fixedly connected to the clutch cover 42 and the fastening possibilities described above by means of the locking means for the axial attachment of the actuator 32 between the cover bearing 46th and the actuator 32 act. The above explanations thus also apply to the actuating device 32 instead of the clutch cover 42, wherein the mechanical configuration can be correspondingly kinematically reversed. Furthermore, all the described embodiments can also be combined with one another, so that more than one fastening possibility, in particular with differently configured locking elements, can be provided.

In the dual clutch unit described above, in particular for use in conjunction with powershift transmissions (parallel shift), the closing force for the clutches is introduced via actuators, preferably without leverage, directly into the clutches, the pressure pots as intermediate elements between pressure plates and actuators substantially rigid or can be formed with a defined elasticity.

Reference character list double clutch

first clutch

second clutch

first pressure plate

first counter plate

first clutch disc

friction lining

gearing

second pressure plate

second counter plate

second clutch disc

actuator

first impression cylinder

first piston

first actuating pot

second impression cylinder

second piston

second actuating pot

clutch cover

contact surface

cover support

circlip

bag

additional tab

flap

wave

motor-side end face

gearbox side

approach

screw

groove

deepening

wedge

Claims

claims

1. Double clutch for coupling an engine-side input shaft with a first driven-eliminated output shaft and / or a second transmission-side output shaft, with a first clutch (12) having a relative to a first counter-plate (18) axially movable first pressure plate (16) for coupling a first clutch disc (20) connected to the first output shaft,

a second clutch (14) having a second pressure plate (26) axially movable relative to a second counterplate (28) for coupling a second clutch plate (30) connected to the second output shaft,

a clutch cover (42) connected to the first counterplate (18) and the second counterplate (28),

an actuating device (32) for axially moving the first pressure plate (16) and / or the second pressure plate (26) and

a cover bearing (46) arranged between the actuating device (32) and the clutch cover (42)

characterized in that

the cover bearing (46) and the clutch cover (42) are configured such that the cover bearing (46) in the direction of the drive shaft to the clutch cover (42) can be introduced, and

the cover bearing (46) with the clutch cover (42) via a locking element (48) for locking the cover bearing (46) with the clutch cover (42) is connected such that on the locking element (48) actuating forces of the actuating device (3) on the clutch cover (42) are derivable.

2. Double clutch according to claim 1, characterized in that the clutch cover (42) can be produced from a plate having a defined nominal thickness, wherein the clutch cover (42) rests with the nominal thickness at the top of the bearing (46).

3. Double clutch according to claim 1 or 2, characterized in that the clutch cover (42) has a bearing opening (44) for receiving the cover bearing (46), wherein the bearing opening (44) is configured such that the bearing opening (44) in a restriction can be produced exclusively on punching and / or turning operations.

4. Double clutch according to one of claims 1 to 3, characterized in that the locking element (48) has a variable in the radial direction extension, wherein the locking element (48) in particular as a securing ring (48) is configured.

5. Double clutch according to one of claims 1 to 4, characterized in that a tab (52, 54) for the axial movement limitation of the locking element (48) between the tab (52, 54) and the clutch cover (42) is provided, wherein the tab ( 54), in particular by the clutch cover (42), preferably by punching and bending, is formed.

6. Double clutch according to claim 5, characterized in that the tab (52, 54) for clamping the locking element (48) is axially movable.

7. Double clutch according to one of claims 1 to 6, characterized in that the locking element (48) abuts both a gear-side end face (60) of the clutch cover (42) and on a motor-side end face (58) of the clutch cover (42), wherein the Clutch cover (42) in particular in the axial direction extending shafts (56).

8. Double clutch according to one of claims 1 to 7, characterized in that the cover bearing (46) and / or the clutch cover (42) has a projecting in the radial direction approach (62), wherein the projection (62) by means of the locking element (48 ) is preferably detachably connected to the clutch cover (42) or to the cover bearing (46).

9. dual clutch according to one of claims 1 to 8, characterized in that the clutch cover (42) and / or the cover bearing (46) has a recess (68) for the positive and / or frictional reception of the locking element (48, 70), wherein the Recess (68) in particular as a groove (66) for receiving a securing ring (48) is configured.

10. Double clutch according to one of claims 1 to 9, characterized in that the locking element is designed as interlocking in the cover bearing (46) and in the clutch cover (42) provided thread.