DE102009039991A1 - Dual clutch for automobile, has supporting component fixed at central plate, receiving unit supported at central plate in rotatable manner, and partial clutches with actuating devices arranged at receiving unit - Google Patents

Abstract

The clutch has a pair of partial clutches connecting a drive shaft of a drive with input shafts of a transmission, respectively. The partial clutches exhibit a common central plate (1), and an actuating device is provided for each of the partial clutches. A supporting component i.e. bearing cover (17), is fixed at the central plate, and a receiving unit (25) i.e. receiving plate, is supported at the central plate in a rotatable manner. The actuating devices of the partial clutches are arranged at the receiving unit.

Description

The The present invention relates to a dual clutch with a first Partial coupling, via which a drive shaft of a drive is connectable to a first transmission input shaft of a transmission and with a second part clutch, via which the drive shaft the drive with a second transmission input shaft of the transmission is connectable, these two partial clutches a common Have central plate.

dual clutches are increasingly being used in the automotive industry because they provide traction-free interruption Switching and performing fast switching operations enable. To carry out a switching operation is an engagement or disengagement of the respective Couplings required, depending on whether a pressed (i.e., one open in the ground state) or imprinted (i.e. H. closed in the ground state) partial coupling is present. For this purpose is in the respective coupling areas an operating force initiated an associated actuator. A double clutch usually shows each of the partial clutches have a separate actuator. in principle However, it is also possible the opening mechanisms of Part couplings with each other (usually mechanical) to couple and this to operate with only one actuator.

A dual clutch with two pressed part couplings, each with a separate actuator is from the DE 10 2005 037 514 A1 known. The partial clutches are therefore in the ground state, ie without the initiation of an actuating force, open. By means of the actuating force, the partial clutches are respectively engaged and thus enables a torque transmission between the drive shaft and the respective associated transmission input shaft.

As an alternative to this design of the double clutch, one of the partial clutches may also be closed in the ground state (pressed-on clutch), as is known from US Pat DE 10 2007 019 499 A1 is known.

Farther Alternatively, both couplings in the ground state be formed closed, in which case should be ensured that an operating state in which both clutches closed simultaneously are avoided.

As an example of an actuator for actuating the above-mentioned (and other) dual-clutch arrangements, FIG WO 03/081069 A1 a mechanical clutch release system with operating levers. The actuator according to the WO 03/081069 A1 comprises two mechanical transmission links for transmitting the respective actuating force for engagement or disengagement via rocker arms, pivoting levers, sliding forks and / or rotary forks used, and combinations of these different levers or forks, such. B. a combination of rocker arm and pivot lever, can be used.

in the Drive train of a vehicle occur regularly Axial vibrations on which the function of (partial) coupling or the double clutch in total, that between the drive and the transmission is arranged adversely affect. In particular, the engagement force or the disengagement force can be due to these Axialschwingungen Fluctuations are subject to the transferable torque change.

It is therefore an object of the present invention, the effects from axial vibrations in the drive train to the actuation system a clutch and in particular a release system of a compressed partial clutch to minimize a double clutch.

This The object is achieved by a double clutch with a first part clutch, via a drive shaft of a drive with a first transmission input shaft a transmission is connectable and a second part clutch, via the drive shaft of the drive with a second transmission input shaft the transmission is connectable, these partial clutches a common Have central plate and for each of the partial clutches an actuator is provided, and wherein a Abstützbauteil, in particular a bearing cap provided is, which is fixed to the central plate and on the rotatable one Supporting means is supported, on which the actuating means the partial clutches are arranged.

preferred Embodiments of the invention Double clutch are in the dependent claims 2 to 14 indicated.

This Task is also solved according to the invention through a double clutch with a first part clutch, over a drive shaft of a drive with a first transmission input shaft a transmission is connectable, and a second part coupling via the drive shaft of the drive with a second transmission input shaft the transmission is connectable, wherein the partial clutches a common Have central plate, and wherein the central plate on one of Transmission input shafts and rotatably supported on the clutch cover are.

Preferred embodiments of this alternative embodiment are described in the corresponding pending patent claims.

The The present invention will be described below with reference to preferred embodiments in conjunction with the accompanying figures closer explained. In these show:

1 An exemplary embodiment of a double clutch with cover-fixed fork release, in which the part clutch K1 is open and in which the part clutch K2 is closed,

2 the embodiment of the double clutch after 1 , wherein the partial clutch K1 is closed and the partial clutch K2 is open and

3 a representation according to the section XX with a plan view of the cover firmly arranged fork release.

The in the 1 and 2 shown dual clutch comprises two partial clutches K1 and K2, which can connect a common drive shaft of a drive with different, not shown in detail transmission input shafts of a transmission unit, both partial clutches K1 and K2 are open in the present embodiment in the ground state.

As However, already set out input, it is also possible at least one of the partial clutches in the ground state closed form, without departing from the teaching of the invention.

The Transmission is advantageously a so-called power shift transmission, which has two partial transmission whose transmission input shafts on the Part clutches K1, K2 are connectable to a drive shaft.

In this case, the torque generated by a drive, for example an internal combustion engine and / or a turbine and / or an electric motor, to a central plate 1 transferred to the double clutch. In an internal combustion engine, this is particularly possible because the crankshaft is connected to a housing of the clutch assembly, to which the central plate 1 is fixed. As stated in the introduction, the central plate can be connected for this purpose with a drive plate or with a drive basket, which is designed as a driver ring. The central plate (counter pressure plate) 1 can also form part of a flywheel or a dual mass damping system, which is connected to the drive.

The central plate is mounted on one of the transmission input shafts in the embodiment shown via a first fixed bearing, which is presently designed as a rolling bearing. Such as in the DE 10 2007 019 499 shown, one of the transmission input shafts may be formed as a hollow shaft in which the second transmission input shaft is accommodated coaxially. In the present embodiment, the central plate 1 can be arranged both on the outer hollow shaft and on the received in the hollow shaft inner transmission input shaft. As stated, the central plate 1 stored directly on one of the transmission input shafts. Alternatively, the central plate could 1 be supported on the transmission side via another support shaft as in the WO 2008/058508 A1 is executed.

In the present case can be used to support the central plate 1 that in the 1 and 2 shown Wälzköperlager 2 be used. According to a development of the outer bearing ring of the rolling element bearing could be integral with the central plate 1 and / or the inner race of the rolling element bearing are integrally formed with the corresponding transmission input shaft. This would be possible, for example, that at the central plate 1 or the transmission input shaft directly a running surface for the rolling elements is formed. Likewise, the rolling element bearing could be formed in both the inner and the outer bearing ring in the manner of a wheel bearing with extended flange, wherein the flange would be shaped in the form of the central plate and the transmission input shaft.

Each of the transmission input shaft is fitted with a clutch disc 3 . 4 rotatably connected. The clutch discs 3 . 4 Wear radially outside friction linings 6 . 7 the axially clamped between the, the two part clutches K1, K2 common intermediate plate 1 and a pressure plate associated with the respective partial clutches K1 and K2 5 . 6 , The central plate 1 Accordingly forms a common to the partial clutches K1 and K2 back pressure plate, each with one of the pressure plates for the clutch discs 3 . 4 acting pressure plates 5 . 6 forms one of the partial clutches K1 and K2. Here are the pressure plate 5 the clutch K1 and the pressure plate 6 the clutch K2 each indirectly or directly preferably via leaf spring-like elements with the central plate 1 rotatably connected, but limited axially displaceable connected. Furthermore, on the central plate 1 a clutch cover 9 arranged the partial clutch K2, which is designed here as a metal cover. Axially on both sides of this sheet metal lid 9 are lever elements, in this case the disc springs 10 and 11 provided by means of which the respective associated printing plates 5 . 6 are operable. The printing plate 5 in turn is with a clutch cover 8th Partial coupling K1 via the riveted joint 7 connected, which carries at its end remote from the pressure plate a pivot bearing or Abwälzauflage on which the plate spring 10 the partial clutch K1 is tiltably or pivotally supported. To close the partial clutch K1 this plate spring 10 Partial clutch K1 via the engagement bearing 12 acted upon by an engagement force. The actuation bearing 12 in this case forms part of a first Betätigungssytems, which also has a shift sleeve 14 , an operating lever 20 as well as a hydraulic semi-taker 23 having. The printing plate 6 Partial clutch K2 is via the diaphragm spring 11 with an engagement force via the engagement bearing 13 subjected to the engagement bearing 13 Part of a second Betätigungssytems which also the sliding sleeve 15 and the operating lever 21 as well as the hydraulic semi-taker 24 includes. The sliding sleeves 14 and 15 the partial clutches K1 and K2 are on a central guide sleeve 16 supported.

On the central plate 1 is a bearing cap according to the embodiment shown 17 Screwed or riveted or fixed in another way (as an embodiment of the support member). This bearing cap 17 is about a second camp 18 , In this case, a rolling body bearing as a rolling bearing, with a bearing flange 19 (as an embodiment of the connection means) connected.

Alternatively to the use of a separate rolling element bearing 18 between bearing cap 17 and bearing flange 19 can the outer ring of the rolling element bearing 18 integral with the bearing cap 17 and / or the inner ring of the rolling element bearing 18 integral with the bearing flange 19 be educated. For this purpose, the bearing cap and / or the bearing flange could be provided with a running surface for the rolling elements. Likewise, the rolling element bearing could 18 are formed with respect to both the inner and the outer bearing ring in the manner of a wheel bearing with extended flange, wherein the flange would be shaped in the shape of the bearing cap or the Lagerflanschs.

The bearing flange 19 is on a receiving plate 25 (As an embodiment of the receiving means) connected. At the receiving plate 25 are next to the bearing flange 19 also the central guide sleeve 16 , a mating sliding bearing 22 for the release forks 20 and 21 and the two hydraulic semi-takers 23 . 24 attached.

The receiving plate 25 turn is on the clutch bell 30 over vibration damper 27 . 28 supported, in addition, a rotation 29 is provided to a rotation between the receiving plate 25 and clutch bell 30 to avoid. Between this rotation lock 29 and the receiving plate 25 In turn, a vibration damper is provided.

According to the in the 1 and 2 embodiment shown are the actuators 23 . 24 (ie the hydraulic semi-slave) over the vibration damper 27 . 28 with the clutch bell 30 connected, with the receiving plate 25 with the actors 23 . 24 connected is. Alternatively, however, the receiving plate could also be connected directly to the clutch bell. In this case, an elasticity to avoid a tension due to the two fixed bearing 2 and 18 via the vibration damper or an elasticity of another of the components, in particular an elasticity of the bearing flange 19 be realized.

Due to the support of the central plate 1 over the bearing cap 17 , the second camp 18 , the bearing flange 19 and the mounting plate 25 results in operation of the dual clutch assembly the following: The central plate 1 , as well as all associated with this components as well as in particular the bearing cap 17 rotate according to the torque introduced. The rolling bearing 18 decouples the bearing flange 19 and the receiving plate 25 and all with this recording plate 25 connected components of this rotational movement. The inner ring of the rolling bearing 18 and all associated components remain relative to the outer ring of the bearing 18 and all related components are. Accordingly, the receiving plate 25 through the vibration absorbers 27 and 28 and the anti-rotation pin 29 secured against rotation relative to the clutch bell.

In comparison, it is at the release camps 12 . 13 in this embodiment so that the respective inner ring rotates and the outer ring stops, so there is an inverse behavior.

The vibration absorbers 27 . 28 in the present case also act as sealing means for the clutch bell on the peripheral surface of the hydraulic semi-slave of the clutches K1 and K2.

alternative to the present hydraulic semi-receivers K1 and K2 could Of course, other types of actuators are used.

Furthermore, as an alternative to the actuating system with levers described and shown in the figures, a partially or completely hydraulic engagement system or release system may also be used 20 . 21 be used, wherein the hydraulic cylinder also on the receiving plate 25 would be supported.

3 shows a view of the embodiment of the actuator with the features already described above without the actual dual clutch and in particular with a picture of the release fork of Teilkupp K1 including a press-fit ball and the release fork of the K2 partial clutch, including a press-in calotte.

1

Central plate

2

first fixed bearing

3

clutch disc K1

4

clutch disc K2

5

printing plate K1

6

printing plate K2

7

rivet bolts

8th

clutch cover K1

9

clutch cover K2

10

Belleville spring K1

11

Belleville spring K2

12

operation seat

13

operation seat

14

sliding sleeve

15

sliding sleeve

16

guide sleeve

17

support means

18

second fixed bearing

19

Lagerflansch

20

actuating lever

21

actuating lever

22

against bearings for release forks

23

actuator

24

actuator

25

receiving means

26

console for hydr. Semi-takers

27

elastic support means

28

elastic support means

29

twist

30

Kupplungsglocke

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 102005037514 A1 [0003]
• DE 102007019499 A1 [0004]
• WO 03/081069 A1 [0006, 0006]
• - DE 102007019499 [0021]
• WO 2008/058508 A1 [0021]

Claims (16)

Double clutch with a first part clutch (K1), via which a drive shaft of a drive with a first transmission input shaft of a transmission is connectable and a second part clutch (K2) via which the drive shaft of the drive with a second transmission input shaft of the transmission is connectable, said partial clutches ( K1, K2) a common central plate ( 1 ) and an actuating device is provided for each of the partial clutches (K1, K2), characterized by a support component, in particular a bearing cap ( 17 ) attached to the central plate ( 1 ) is fixed and on the rotatable a receiving means ( 25 ) is supported, on which the actuators of the partial clutches (K1, K2) are arranged. Double clutch according to claim 1, characterized in that the central plate ( 1 ) via a first fixed storage ( 2 ), in particular a Wälzköperlager as a rolling bearing, is mounted on one of the transmission input shafts. Double clutch according to claim 1 or 2, characterized in that the support means, in particular the bearing cap ( 17 ), with the receiving means ( 25 ), in particular the receiving plate ( 25 ), via a second fixed storage ( 18 ), in particular a rolling element bearing such as a rolling bearing is connected. Double clutch according to one of claims 1 to 3, characterized by a connecting means, in particular a bearing flange ( 19 ), which between the support means ( 17 ) and the receiving means ( 25 ) is arranged. Double clutch according to one of claims 1 to 4, characterized in that each of the actuating devices is an actuating bearing ( 12 . 13 ) and an actuating lever ( 20 . 21 ), wherein the actuating lever ( 20 . 21 ) of the actuating devices via mutually independent controllable actuators ( 23 . 24 ) are operable. Double clutch according to claim 4 in conjunction with claim 5, characterized in that the connecting means ( 19 ) has at least one opening through which the actuating lever ( 20 . 21 ). Double clutch according to claim 5 or 6, characterized in that the actuating lever ( 20 . 21 ) are mounted on a common counter-plain bearing or on independent counter-plain bearings, wherein the one or more counter-plain bearings on the receiving means ( 25 ) are supported. Double clutch according to one of claims 5 to 7, characterized in that the actuators ( 23 . 24 ) at the receiving means ( 25 ) are arranged. Double clutch according to one of claims 1 to 8, characterized in that the receiving means ( 25 ) on the clutch cover ( 30 ), in particular via an elastic support means ( 27 . 28 ), is supported. Double clutch according to claim 9, characterized in that the actuators ( 23 . 24 ) or their control lines the clutch cover ( 30 ) and that the actuators on the clutch cover ( 30 ) via the elastic support means ( 27 . 28 ) are supported. Double clutch according to claim 9 or 10, characterized characterized in that the elastic support means vibration damper are. Double clutch according to one of claims 1 to 11, characterized in that the actuating means a common central guide sleeve ( 16 ), on the sliding sleeves ( 14 . 15 ) for actuating the individual actuating bearings ( 12 . 13 ) are supported, wherein the guide sleeve ( 16 ) on the receiving means ( 25 ) is arranged. Double clutch according to one of claims 1 to 12, characterized by an anti-twist device ( 29 ) for preventing a rotation between receiving means ( 25 ) and clutch cover ( 30 ). Double clutch according to claim 13, characterized in that the anti-twist device ( 29 ) has a vibration damping. Double clutch, in particular according to one of claims 1 to 14, with a first part clutch (K1), via which a drive shaft of a drive with a first transmission input shaft of a transmission is connectable, and a second part clutch (K2) via which the drive shaft of the drive with a second Transmission input shaft of the transmission is connectable, wherein the partial clutches (K1, K2) a common central plate ( 1 ), characterized in that the central plate ( 1 ) on one of the transmission input shafts and on the clutch cover ( 30 ) are rotatably supported. Double clutch according to claim 14, characterized in that the central plate via a first fixed bearing ( 2 ) is mounted on the corresponding transmission input shaft, and that the central plate via a second fixed bearing ( 18 ) on the clutch cover ( 30 ) and wherein a component ( 19 ) with at least partially elastic properties between the central plate ( 1 ) and the clutch cover ( 30 ) is arranged.