DE102018218858B3 - Double clutch arrangement for a motor vehicle drive train - Google Patents

Abstract

Double clutch arrangement (1) for a motor vehicle drive train (2) comprising an input disk carrier (3), a first output disk carrier (4) and a second output disk carrier (5), the first output disk carrier (4) and the second output disk carrier (5) being arranged next to one another in the axial direction wherein the input disc carrier (3) is connected in a rotationally fixed manner to a plurality of first input discs (6) and a plurality of second input discs (7), the first output disc carrier (4) being connected in a rotationally fixed manner to a plurality of first output discs (8) and the second output plate carrier (5) is connected in a rotationally fixed manner to a plurality of second output plates (9), the first input plates (6) and the first output plates (8) forming a first plate set (10) and the second input plates (7) and the second Output slats (9) form a second disk set (11), with at the input slat center ger (3) a first support member (12) for supporting the first plate pack (10) is arranged axially fixed and axially spaced axially from the first support member (12) a second support member (13) for supporting the second plate pack (11) is arranged axially fixed , both the first support member (12) and the second support member (13) being substantially L-shaped, a radial part (14, 14 ') of each of the two support members being of substantially the same length as an axial part (15, 15 ') of the respective support member (12, 13).

Description

Field of the Invention

The present invention relates to a dual clutch arrangement for a motor vehicle drive train comprising an input disk carrier, a first output disk carrier and a second output disk carrier, the first output disk carrier and the second output disk carrier being arranged next to one another in the axial direction, the input disk carrier having a plurality of first input disks and a plurality of second ones Input slats is rotatably connected, wherein the first output slat carrier is rotatably connected to a plurality of first output slats and the second output slat carrier is rotatably connected to a plurality of second output slats, the first input slats and the first output slats forming a first plate pack and the second input slats and second output plates form a second plate pack, a first support member for support on the input plate carrier tion of the first disk set is arranged axially fixed and axially spaced from the first support member a second support member for supporting the second disk pack is arranged axially fixed.

State of the art

Such a clutch arrangement is already from the document, for example DE 10 2009 047 953 A1 known.

Furthermore, coupling arrangements of the type described above are from the documents EP 2 572 118 B1 . WO 2011/019532 A2 known.

A wide variety of variants are known for axially supporting a disk set of a disk clutch. So the reveals DE 1 160 697 B For example, a resilient support of the friction disks of multi-plate clutches, in which the axially limited adjustable thrust washer on the inner disk carrier rests with its side facing away from the disks directly against a snap ring inserted into a groove of the inner disk carrier. It is provided that the snap ring, which forms a resilient, tension-free abutment on the inner disk carrier, is tiltably seated in a widened groove.

The document DE 10 2015 213 125 A1 describes a clutch, in particular for a transmission of a motor vehicle, preferably for a double clutch for an automatic or automated double clutch transmission with at least one friction clutch with at least one disk carrier and at least one disk pack arranged on the disk carrier, the disk pack being supported with a support element and with the axial support for the support element directly via a locking ring or indirectly via a spacer on the locking ring.

The document DE 10 2013 216 333 A1 shows a multiple clutch device, in particular a double clutch device, for a transmission of a motor vehicle, preferably for an automatic or automated double clutch transmission, with a first friction clutch and a second friction clutch. Support rings are arranged between the two friction clutches or between the corresponding disk packs of the friction clutches, which axially overlap at least partially.

Summary of the invention

It is an object of the invention to provide an improved dual clutch gear arrangement for a motor vehicle drive train.

The problem is solved by a double clutch arrangement for a motor vehicle drive train comprising an input disk carrier, a first output disk carrier and a second output disk carrier, the first output disk carrier and the second output disk carrier being arranged next to one another in the axial direction, the input disk carrier having a plurality of first input disks and a plurality of second input plates is connected in a rotationally fixed manner, the first output plate carrier being connected in a rotationally fixed manner to a plurality of first output plates and the second output plate carrier being connected in a rotationally fixed manner with a plurality of second output plates, the first input plates and the first output plates forming a first plate set and the second input plates and the second output lamellas form a second lamella packet, the first lamella packet being associated with a first pressure member, where in which the first pressure element acts on a first side of the first plate set, and wherein a second pressure element serves to actuate the second plate set, the second pressure element acts on a second side on the second plate set, and wherein the second side axially opposite the first pressure element Side of the double clutch, wherein a first support member for supporting the first disk set is arranged axially fixed on the input disk carrier and axially spaced axially spaced from the first support member, a second support member for supporting the second disk set is arranged axially, both the first support member and the second Support member essentially L-shaped is formed, wherein a radial part of each of the two support members is of substantially the same length as an axial part of the respective support member, the axial part of the first support member and the axial part of the second support member being arranged to overlap in the axial direction, and wherein the axial Part of the first support member and the axial part of the second support member are arranged radially decoupled from each other, so that an air gap is formed between these two parts.

The dual clutch arrangement according to the invention accordingly comprises two multi-plate friction clutches, each with a disk set, which are designed in particular as wet-running multi-plate clutches. The multi-plate clutches are arranged next to one another in the axial direction, in particular parallel to one another.

The first support member and the second support member are arranged axially fixed on the input plate carrier, i.e. they are fixed to the input disk carrier, namely axially fixed and rotationally fixed.

Due to their L-shape, the first support member and the second support member each have two legs, one leg extending in the radial direction and thus forming a radial part of the respective support member and the respective further leg running in the axial direction and thus an axial part of the respective support member.

The “axial” direction in the present case describes a direction along or parallel to a longitudinal axis of a motor vehicle drive train.

The “radial” direction here describes a direction normal to the longitudinal axis of a motor vehicle drive train.

The axial part of the first support member and the axial part of the second support member are arranged overlapping in the axial direction according to the invention. In this context, the term “arranged overlapping” is to be understood in particular to mean that the axial part of the first support member at least partially covers the axial part of the second support member in the axial direction, or vice versa. The overlapping arrangement of the first support member and the second support member makes it possible to produce a particularly compact double clutch arrangement. According to the present invention, the axial part of the first support member and the axial part of the second support member are radially decoupled from one another, so that an air gap is formed between the two parts.

The inventive design of the two support members in particular increases the rigidity of the latter, which contributes to reliable operation of the dual clutch arrangement with short reaction times.

Further developments of the invention are specified in the dependent claims, the description and the accompanying drawings.

The first support member and the second support member are preferably axially decoupled from one another via a decoupling device. The decoupling device can be understood to mean a transmission prevention device which prevents or suppresses transmission of an actuation of one plate pack to the other plate pack.

The input disk carrier is preferably designed as an outer disk carrier and the first output disk carrier and the second output disk carrier are each designed as an inner disk carrier.

list of figures

• Fig. zeigt eine schematische Darstellung eines Kraftfahrzeugantriebsstranges mit einer Doppelkupplungsanordnung.

The invention is described below by way of example with reference to the drawings.

• FIG. 1 shows a schematic illustration of a motor vehicle drive train with a double clutch arrangement.

Detailed description of the invention

A motor vehicle drive train is shown schematically in FIG 2 with a dual clutch arrangement according to the invention 1 shown.

In the following paragraphs, the terms "first page 35 of the first plate pack 10 "," second side 36 of the first plate pack 10 "," first page 35 ' of the second plate pack 11 ”and“ second side 36 ' of the second plate pack 11 ”for a more detailed description of the double clutch arrangement shown in FIG 1 used. Here, a “first page” refers to FIG 35 , 35 '"always on the left side of the respective plate pack 10 . 11 and a "second side 26, 26 '" always on the right side of the respective plate pack 10 . 11 ,

The motor vehicle powertrain 2 has a drive motor 17 , which can be formed, for example, by an internal combustion engine, a hybrid drive unit or another common drive unit. The motor vehicle powertrain 2 is along a longitudinal axis 18 aligned.

The double clutch arrangement 1 of the motor vehicle drive train 2 is on the input side with the drive motor 17 connected. An input link 19 the double clutch arrangement 1 is designed with a drive shaft 20 of the drive motor 17 to be connected, the drive shaft 20 for example, a crankshaft. The drive shaft 20 may also include a torsional vibration damper located between the input member 20 the double clutch arrangement 1 and the drive motor 17 is arranged.

The dual clutch arrangement is on the output side 1 with a gear arrangement 21 connected, which is designed to set up a plurality of gear stages. The gear arrangement 21 is formed in particular by two sub-transmissions, one of which is assigned, for example, even forward gears and the other, for example, odd forward gears. The double clutch arrangement 1 and the gear arrangement 21 thus form a double clutch transmission.

An output of the gear arrangement 21 is with a differential gear 22 connected, which is designed to drive power to driven wheels 23 . 23 ' of the motor vehicle drive train 2 to distribute.

The double clutch arrangement 1 also includes a housing 24 , a first output link 25 and a second output link 26 ,

The first output link 25 is with a first transmission input shaft 27 connectable and is formed in the present embodiment as an inner shaft. The second output link 26 is with a second transmission input shaft 28 connectable and is formed in the present embodiment as a hollow shaft and concentric around the first transmission input shaft 27 arranged around. However, it goes without saying that every possibility familiar to a person skilled in the art for the design or arrangement of the transmission input shafts 27 . 28 can be applied.

Within the gear arrangement 21 are either the even or the odd forward gears of the first transmission input shaft 27 assigned and the respective other forward gear stages of the second transmission input shaft 28 assigned.

The double clutch arrangement 1 has an input disk carrier 3 on, which is designed as an outer disk carrier. The input link 19 is non-rotatable with the input plate carrier 3 connected. The double clutch arrangement 1 also has a first output disk carrier 4 , which is designed as an inner disk carrier, and a second output disk carrier 5 , which is also designed as an inner disk carrier. The first output disc carrier 4 is with the first output link 25 non-rotatably connected. The second output disc carrier 5 is with the second output link 26 non-rotatably connected. The first output disc carrier 4 and the second output disk carrier 5 are arranged side by side in the axial direction.

The entrance disk carrier 3 is with a plurality of first input slats 6 rotatably connected with a plurality of first output lamellae 8th that are rotatable with the first output disk carrier 4 are connected, a first plate pack 10 form. The slats of the first slat package 10 are lifted from each other in an unloaded state by means of the first wave springs.

Furthermore, the input disk carrier 3 with a plurality of second input slats 7 rotatably connected with a plurality of second output lamellae 9 with the second output disc carrier 5 are rotatably connected, a second plate pack 11 form. The slats of the second plate pack 11 are lifted from each other in an unloaded state by means of two wave springs.

On the input disk carrier 3 is a first support member 12 axially fixed on which the first plate pack 10 can support. The first support member 12 is on the second side 36 of the first plate pack 10 arranged. Furthermore, is on the input disk carrier 3 a second support member 13 axially fixed on which the second plate pack 11 can support axially. The second support member 13 is on the first page 35 ' of the second plate pack 11 arranged. The first support member 12 and the second support member 13 are L-shaped and each include an axial part 15 . 15 ' and a radial part 14 . 14 ' ,

The direction specification "axial" describes a direction along or parallel to the longitudinal axis 18 , The direction "radial" describes a direction normal to the longitudinal axis 18 ,

The support links 12 . 13 are axially spaced from each other fixed on the input disk carrier 3 arranged. The term "fixed" is to be understood analogously to the term "axially fixed" and describes a torsionally and axially fixed connection.

The axial part 15 and the radial part 14 of the first support member 12 are essentially of the same length. The axial part is the same 15 ' and the radial part 14 ' of the second support member 13 formed essentially the same length.

Furthermore, the first support member 12 and the second support member 13 such on the input disk carrier 3 arranged that their axial parts 15 . 15 ' partially overlap, ie their axial parts 15 . 15 ' Largely overlap in the axial direction.

The first support member 12 and the second support member 13 are via a decoupling device 16 axially decoupled from each other. The decoupling device 16 is designed such that a transmission of an actuation of a plate pack 10 . 11 to the other plate pack 10 . 11 can be prevented or suppressed.

The first plate pack 10 is a first pressure element 29 assigned by means of which the first plate pack 10 against the first support member 12 is compressible. The first pressure element 29 is by means of a first actuator arrangement 31 axially operable, which can be designed, for example, as a hydraulic piston arrangement. The first actuator arrangement 31 is on the case 24 the double clutch arrangement 1 fixed and is with the first pressure member 29 via a first thrust thrust bearing 33 coupled. The first pressure element 29 has an unspecified actuation section on a first side 35 of the first plate pack 10 attacks. Furthermore, the first pressure member 29 a unspecified radial section on which the first actuator arrangement 31 via the first thrust thrust bearing 33 attacks. A first spring arrangement 39 in the form of a compression spring, the first pressure element is tensioned 29 against the direction of actuation, namely in the opening direction, of the first plate pack 10 , ie in relation to Fig. to the left, in front. Here is the first pressure member 29 a first stop 37 assigned the axially fixed to the input disk carrier 3 and / or with the input member 19 connected is. The first spring arrangement 39 presses the first pressure member 29 in the axial direction against the first stop 37 , such that an axial load on the first thrust member axial bearing 33 through the first spring arrangement 39 is reduced or avoided when the first plate pack 10 should be unencumbered.

The double clutch arrangement 2 also has a second pressure member 30 on that on a second page 36 ' of the second plate pack 11 , ie the side of the double clutch arrangement axially opposite the first pressure member 2 , is arranged. The second pressure element 30 is used to operate the second plate pack 11 and has a pressure member actuating section, which on the second plate pack 11 attacks on the second side 36 ' of the second plate pack 11 , The second pressure element 30 is by means of a second actuator arrangement 32 can be actuated, which can be designed in particular as a piston arrangement. The second actuator arrangement 32 is on the case 24 the double clutch arrangement 1 fixed and acts via a second thrust thrust bearing 34 on the second pressure element 30 , The second pressure element 30 has a radial section, not described in more detail, on which the second thrust thrust bearing 34 attacks. A second spring arrangement 40 in the form of a compression spring, the second pressure element is tensioned 30 against the direction of actuation, namely in the opening direction, of the second plate pack 11 , ie in relation to Fig. to the right, before. The second pressure element 30 is a second stop 38 assigned to that with the input disk carrier 3 and / or with a support member 41 connected is. The function of the second stop 38 corresponds to that of the first attack 37 ,

LIST OF REFERENCE NUMBERS

1

Dual clutch assembly

2

Motor vehicle drive train

3

Input plate carrier

4

First exit disk carrier

5

Second exit disk carrier

6

First entrance slat

7

Second entrance slat

8th

First exit slat

9

Second output slat

10

First plate pack

11

Second plate pack

12

First support member

13

Second support link

14

Radial part (of the first support member)

14 '

Radial part (of the second support member)

15

Axial part (of the first support member)

15 '

Axial part (of the second support member)

16

decoupling device

17

drive motor

18

longitudinal axis

19

input member

20

drive shaft

21

transmission assembly

22

differential gear

23, 23 '

bikes

24

casing

25

First output link

26

Second output link

27

First transmission input shaft

28

Second transmission input shaft

29

First pressure element

30

Second pressure link

31

First actuator arrangement

32

Second actuator arrangement

33

First thrust thrust bearing

34

Second thrust thrust bearing

35

First side (of the first plate pack)

35 '

First side (of the second plate pack)

36

Second side (of the first plate pack)

36 '

Second side (of the second plate pack)

37

First stop

38

Second attack

39

First spring arrangement

40

Second spring arrangement

41

supporting member

Claims (3)

Double clutch arrangement (1) for a motor vehicle drive train (2) comprising an input disk carrier (3), a first output disk carrier (4) and a second output disk carrier (5), the first output disk carrier (4) and the second output disk carrier (5) being arranged side by side in the axial direction wherein the input plate carrier (3) is connected in a rotationally fixed manner to a plurality of first input plates (6) and a plurality of second input plates (7), wherein the first output plate carrier (4) is connected in a rotationally fixed manner to a plurality of first output plates (8) and the second output plate carrier (5) is connected in a rotationally fixed manner to a plurality of second output plates (9), the first input plates (6) and the first output plates (8) forming a first plate pack (10) and the second input plates (7) and the second Output disks (9) form a second disk pack (11), the first disk pack ( 10) a first pressure element (29) is assigned, the first pressure element (29) engaging on a first side (35) of the first plate set (10), and a second pressure element (30) serving to actuate the second plate set (11) , wherein the second pressure member (30) engages on a second side (36 ') on the second disk pack (11), and wherein the second side (36') is the side of the double clutch (2) axially opposite the first pressure member (29) , A first support member (12) for supporting the first disk set (10) being arranged axially fixed on the input disk support (3) and axially spaced from the first support member (12), a second support member (13) for supporting the second disk set (11) is arranged axially fixed, both the first support member (12) and the second support member (13) being substantially L-shaped, a radial part (14, 14 ') of each of the two support members being essentially the same is long, like an axial part (15, 15 ') of the respective support member (12, 13), the axial part (15) of the first support member (12) and the axial part (15') of the second support member (13) are arranged to overlap in the axial direction and the axial part (15) of the first support member (12) and the axial part (15 ') of the second support member (13) are arranged so as to be radially decoupled from one another, so that an air gap is formed between these two parts. Double clutch arrangement (1) Claim 1 , characterized in that the first support member (12) and the second support member (13) are axially decoupled from one another via a decoupling device (16). Double clutch arrangement (1) Claim 1 or 2 , characterized in that the input disk carrier (3) is designed as an outer disk carrier and the first output disk carrier (4) and the second output disk carrier (5) are each designed as an inner disk carrier.

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