DE102018113945B3 - Coupling arrangement with a built-in friction on a pressure pot - Google Patents

Abstract

The invention relates to a clutch arrangement (1) for a drive train of a motor vehicle, comprising a clutch (2), wherein the clutch (2) comprises a first clutch component (3), which first clutch component (3) is a first friction element (4) and one is the first Friction element receiving means (5), and a second coupling component (7), which second coupling component (7) comprises a second friction element (6) which can be rotationally connected to the first friction element (4), as well as having one Clutch (2) between its closed position and its open position adjusting actuator (8), wherein a bearing ring (9) of an actuating bearing (10) of the actuating device (8) is non-slidably coupled to the first friction element (4), wherein the friction element carrier ( 5) of the first coupling component (3) in an axial direction of an axis of rotation (11) of the coupling (2) penetrating web portion (12), with the bearing ring (9) of the actuating bearing (10) is in contact or can be brought, is formed stoffeinteilig with the first friction element (4).

Description

The invention relates to a coupling arrangement for a drive train of a motor vehicle, such as a car, truck, bus or other commercial vehicle, with a clutch, wherein the clutch comprises a first clutch constituent, which first clutch constituent a first friction element and a first friction element receiving the first friction element (first) Reibelementeträger and a second clutch component comprising a second clutch component, a second friction member rotatably engageable with the first friction member, and an actuator adjusting the clutch between its closed position and its open position, wherein a (first) bearing ring of an actuator bearing of the actuator non-slidably coupled to the first friction element.

Generic coupling arrangements are already well known from the prior art. In this context, for example, discloses the DE 10 2015 224 910 A1 a torque transmitting device, in particular a multi-plate clutch, with a central clutch release.

As a disadvantage of this known from the prior art embodiments, it has been found that the pressure cups previously used between the actuator and the friction elements of the clutch are relatively expensive to manufacture. In addition, the assembly of these pressure pots is relatively difficult due to the particular Drehausrichtung.

From the DE 10 2006 060 738 A1 a coupling arrangement with the features of the preamble of claim 1 is known. Further prior art is in the DE 103 01 405 A1 as well as the DE 10 2004 015 214 A1 described.

It is the object of the present invention to overcome the disadvantages known from the prior art and in particular to provide a coupling arrangement which represents a unit which is as completely as possible preassembled and can be easily integrated in a motor vehicle drive train.

This is inventively achieved in that a frictional element carrier of the first coupling component in an axial direction of an axis of rotation of the coupling penetrating web portion, which web portion with the bearing ring of the actuating bearing is in contact or can be brought stoffeinteilig (ie, directly / integrally) formed with the first friction element / is formed.

Since a previous pressure pot is integrated directly in the form of the web portion in a friction element of the clutch, the structure of the clutch assembly is simplified. As a result, both the number of components and the manufacturing costs are reduced and simplifies the assembly of the clutch assembly.

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

Accordingly, it is also advantageous if the web portion is arranged to a second friction element (axially) facing away from the first friction element. Thus, the first friction element is particularly compact and simple.

In this connection, it is also expedient for the web section to be a projection projecting in the axial direction from a plate-shaped base section of the first friction element.

Are a plurality of web portions in a circumferential direction, d. H. along a circumference of an imaginary circular line running around the axis of rotation, distributed, wherein each web section protrudes through a window provided in the (first) friction element carrier, the most uniform possible contact of the first friction element on the part of the actuating bearing results in the circumferential direction.

In addition, it is advantageous if the web portion of the contacting (first) bearing ring of the actuating bearing is formed as a radially inner first Wälzbahn forming bearing inner ring and the web portion on a plate-shaped support portion of the (first) bearing ring, which support region from the first Wälzbahn in a Radial direction of the axis of rotation extends outwardly away, abuts. This results in an even more compact arrangement of the actuating bearing in the available space.

Furthermore, it is advantageous that a biasing spring which biases the clutch in its open position and which is preferably designed in the form of a disk spring, extends in the axial direction between the (first) friction element carrier and a section fixedly connected to the web section, such as a snap ring, or (directly) the (first) bearing ring is clamped. Thus, the biasing spring is particularly cleverly integrated in a small space.

It is also expedient in this context that the biasing spring on the part of the (first) Reibelementeneträgers on one of the (first) Friction element carrier mounted support plate is supported. As a result, the manufacturing cost is further reduced.

Since the (first) Reibelementeträger is implemented as an outer (lamella) carrier, this is realized with the first friction element overall space-saving.

It is also advantageous if the actuator comprises a slave cylinder and a piston of the slave cylinder, which piston is directly coupled to a further (second) bearing ring of the actuating bearing, is arranged radially outside of a plurality of rolling elements of the actuating bearing. This also results in a particularly space-saving arrangement of the slave cylinder of the actuator.

Furthermore, space is saved when the clutch is realized as a Reiblamellenkupplung.

Furthermore, it is advantageous if the clutch assembly comprises a multiple clutch, wherein in addition to the mentioned (first) clutch further clutches are present. This results in a particularly wide field of application of the coupling arrangement.

In addition, it is advantageous if the clutch arrangement is designed as a hybrid module or an E-axis (electric drive axle unit) or inserted in this or this, wherein in addition to the clutch and the actuating device, an electric machine with a rotor and a stator present is. The first coupling component or the second coupling component is preferably rotationally coupled to the rotor of the electric machine.

In other words, according to the invention, a clutch with an integrated pressure pot is thus implemented in a lamination plate (first friction element). Thus, the pressure pot, which was previously arranged either in the bearing ring of the engagement bearing / release bearing (actuator bearing) or as an additional component on the actuating bearing, now integrated in the lamella plate of the clutch. Teeth (web sections) of the pressure pot engage the bearing ring of the CSC / concentric clutch slave cylinder (actuator with slave cylinder).

The invention will now be explained in more detail with reference to figures, in which context a preferred embodiment is shown.

• 1 eine Längsschnittdarstellung einer erfindungsgemäßen Kupplungsanordnung nach dem bevorzugten Ausführungsbeispiel, wobei die Kupplungsanordnung in einem Bereich einer einen Nehmerzylinder sowie ein Betätigungslager aufweisenden Betätigungseinrichtung und einer durch diese Betätigungseinrichtung gesteuerten Kupplung gezeigt ist,
• 2 eine perspektivische Ansicht des in 1 dargestellten, in Längsrichtung geschnittenen Bereichs der Kupplungsanordnung schräg von einer Rückseite, zu der die Ausformung eines Lagerrings des Betätigungslagers, der mit einem ersten Reibelement der Kupplung in Kontakt steht, erkennbar ist,
• 3 eine perspektivische Ansicht des in 1 dargestellten, in Längsrichtung geschnittenen Bereichs der Kupplungsanordnung schräg von einer Vorderseite,
• 4 eine perspektivische Darstellung eines in Längsrichtung geschnittenen Teilzusammenbaus der Kupplungsanordnung nach 1 ohne Betätigungseinrichtung, wobei die prinzipielle Ausformung und Anordnung einer Vorspannfeder erkennbar ist,
• 5 eine perspektivische Darstellung des ungeschnittenen Teilzusammenbaus nach 4,
• 6 eine Längsschnittdarstellung der in den 1 bis 3 eingesetzten Betätigungseinrichtung, und
• 7 eine perspektivische Ansicht der Betätigungseinrichtung.

Show it:

• 1 a longitudinal sectional view of a coupling arrangement according to the invention according to the preferred embodiment, wherein the coupling arrangement is shown in a region of a slave cylinder and an actuator bearing actuator and a controlled by this actuator coupling,
• 2 a perspective view of the in 1 shown longitudinally cut portion of the clutch assembly obliquely from a rear side, to which the formation of a bearing ring of the actuating bearing, which is in contact with a first friction element of the clutch, recognizable,
• 3 a perspective view of the in 1 shown longitudinally cut portion of the coupling assembly obliquely from a front side,
• 4 a perspective view of a cut longitudinally subassembly of the clutch assembly according to 1 without actuating device, wherein the basic shape and arrangement of a biasing spring is recognizable,
• 5 a perspective view of the uncut subassembly according to 4 .
• 6 a longitudinal sectional view of the in the 1 to 3 used actuating device, and
• 7 a perspective view of the actuator.

The figures are merely schematic in nature and are for the sole purpose of understanding the invention. The same elements are provided with the same reference numerals.

With 1 and further with the 2 and 3 is the basic structure of a clutch assembly according to the invention 1 according to a preferred embodiment. The coupling arrangement 1 is an assembly of a clutch 2 with one on this clutch 2 in operation adjusting acting acting device 8th , The coupling arrangement 1 is typically used in an operation in a drive train, preferably a hybrid powertrain or a purely electric drive train, a motor vehicle. In particular, the clutch assembly 1 preferably used in a hybrid module or in an E-axis of the drive train.

The coupling 2 is realized as a friction clutch, namely as a friction disk clutch. The coupling 2 typically has a first coupling component 3 and an optional, in Dependence of the activation state of the actuating device 8th with the first coupling component 3 connectable second coupling component 7 on. The first coupling component 3 has a (first) friction element carrier 5 and several on this first friction element carrier 5 rotationally fixed and in an axial direction, ie along a rotation axis 11 the clutch 2 , Relatively slidably received (first and third) friction elements 4 . 26 on. The friction elements 4 . 26 are to a radial inside at a sleeve area 27 of the first friction element carrier 5 arranged. The friction element carrier 5 is thus used as an outer carrier / outer disc carrier. In total there are four friction elements 4 and 26 on the first friction element carrier 5 arranged. In this embodiment, a first friction element 4 , whose shape and function is described in more detail below, and three third friction elements 26 arranged side by side in the axial direction. A the first friction element 4 from the totality of the first and third friction elements 4 . 26 axially opposite, third friction element 26 is firmly supported axially.

In the axial direction alternately with the first and third friction elements 4 . 26 are several, here three, second friction elements 6 arranged. The second friction elements 6 are in turn part of the second coupling component 7 the clutch 2 and rotationally fixed with a second friction element carrier 28 connected. Also the second friction elements 6 are in the axial direction relative to each other displaceable on the second friction element carrier 28 added. The second friction elements 6 are to a radial outer side of the second friction element carrier 28 arranged. The second friction element carrier 28 is therefore used as an inner carrier / inner disc carrier.

In a closed position of the clutch 2 are the first and third friction elements 4 . 26 such against the second friction elements 6 pressed that the friction elements 4 . 6 . 26 All rest against each other frictionally engaged and are rotatably coupled. In an open position of the clutch 2 are the first and third friction elements 4 . 26 relative to the second friction elements 6 rotatable.

According to the invention, the first friction element is used 4 leading to an axial side of the entirety of the friction elements 4 . 6 . 26 is arranged, directly as a pressure pot, with the actuator 8th is in active connection. For this purpose are stoffeinteilig on the first friction element 4 a plurality of web portions distributed in the circumferential direction 12 educated.

The formation and extension of the web sections 12 is in the 4 and 5 good to see. The bridge sections 12 are realized as axial projections. The bridge sections 12 are along a circumference one around the axis of rotation 11 arranged around circular line of constant diameter evenly distributed. The bridge sections 12 project to a first axial side 13 a plate-shaped base portion 15 of the first friction element 4 path. To one, the first axial side 13 opposite, second axial side 14 has the basic section 15 immediately a contact surface 30 that with one of the second friction elements 6 frictionally engaged in operative connection, on.

The bridge sections 12 penetrate a radially extending side wall region 29 of the first friction element carrier 5 , The sidewall area 29 is that area that is to an axial end side of the sleeve area 27 connects and extends from this in the radial direction inward away. In the sidewall area 29 / the first friction element carrier 5 are complementary to the web sections 12 trained windows 16 implemented a penetration of the web sections 12 allow.

The coupling 2 is considered a normally open clutch 2 realized, with a biasing spring 19 , which is implemented as a disc spring, is clamped so that the friction elements 4 . 6 . 26 are biased to form an axial gap between each other, away from each other. Also an education of the clutch 2 as a normally closed clutch is implemented in other versions. The arrangement of the biasing spring 19 is also good in 1 to recognize. The biasing spring 19 is in the axial direction between the first friction element carrier 5 and a fixed portion of the land portion 12 / of the first friction element 4 is clamped. The fixed section of the bridge section 12 forms at the respective web section 12 firmly held snap ring 20 which snap ring 20 directly a support surface for the biasing spring 19 forms. On the side of the first friction element carrier 5 is a support plate 21 provided, fixed to the first friction element carrier 5 is connected and radially outside the snap ring 20 a counter bearing surface for the biasing spring 19 forms. In this context, it should be noted in principle that a snap ring 20 is dispensed with in a further embodiment and the biasing spring 19 then preferably directly on an actuating bearing 10 the actuator 8th is supported.

The actuating device 8th , seen alone in the 6 and 7 can be seen in detail, has a (also called Zentralausrücker) concentric slave cylinder 22 on. Consequently, the actuating device 8th an annular housing 31 within, within which is an annular piston 23 slidably guided. The piston 23 forms with the housing 31 in a typical way a pressure room 32 from, depending on the pressure within the pressure chamber 32 The piston 23 is movable. The piston 23 is at his out of the case 31 protruding area non-slip with the actuator bearing 10 coupled.

The actuation bearing 10 is realized as an angular contact ball bearing and has two bearing rings 9 and 24 on, in a typical way by means of several rolling elements 25 in the form of balls are roller-mounted relative to each other. A first bearing ring 9 of the actuating bearing 10 forms a bearing inner ring, said first bearing ring 9 directly with the bridge section 12 in contact. The first bearing ring 9 forms a first Wälzbahn 17 the rolling elements 25 from and has a from this first Wälzbahn 17 from radially outwardly extending plate-shaped support area 18 on. The support area 18 is that area which extends axially towards the web sections towards its radial outside 12 supported. A second bearing ring 24 of the actuating bearing 10 is realized as a bearing outer ring and thus forms a second Wälzbahn 33 out, the radially outside of the first Wälzbahn 17 lies. Also the second bearing ring 24 has a (second) support area 34 on. The second support area 34 extends from the second Wälzbahn 33 outward in the radial direction, and is that region which faces a radial outer side on the piston 23 supported. It can also be seen that the actuation bearing 10 with his bearing rings 9 and 24 is formed so that the rolling elements 25 in the axial direction at the same height with the piston 23 as well as radially inside the piston 23 are arranged. Both bearing rings 9 . 24 are formed by forming processes.

In other words, the pressure pot is by the inventive design of web portions 12 in the clutch 2 integrated. The contact surface of the pressure pot (first support area 18 ) of the rotating bearing ring (first bearing ring 9 ) formed as a flat disc. This has the advantage that the bearing rings 9 . 24 produced by simple forming processes and can be handled better on the line. The previous pressure pot is in the first lamella plate (first friction element 4 ) of the clutch 2 integrated and thus engages with the teeth (web sections 12 ) from the disk carrier (first Reibelementeträger 5 ) out on the CSC (slave cylinder 22 ). Thus, the previous pressure pot concept is reversed. Because of the slats 4 . 6 . 26 When mounted during assembly, there is no extra work on the production line at this point. On the CSC 22 facing side of the coupling 2 becomes the plate spring 19 inserted and by a snap ring 20 under preload of the diaphragm spring 19 secured. This will be the clutch 2 always safely opened and can be delivered and installed as a finished unit. Alternatively, the plate spring can 19 also without snap ring 20 directly on the engagement bearing (actuating bearing 10 ). Due to the externally toothed lamellar plate 4 there is sufficient guidance (no tilting).

LIST OF REFERENCE NUMBERS

1

clutch assembly

2

clutch

3

first coupling component

4

first friction element

5

first friction element carrier

6

second friction element

7

second coupling component

8th

actuator

9

first bearing ring

10

operation seat

11

axis of rotation

12

web section

13

first page

14

second page

15

base portion

16

window

17

first rolling track

18

first support area

19

biasing spring

20

snap ring

21

gusset

22

slave cylinder

23

piston

24

second bearing ring

25

rolling elements

26

third friction element

27

sleeve region

28

second friction element carrier

29

Sidewall region

30

contact area

31

casing

32

pressure chamber

33

second Wälzbahn

34

second support area

Claims (7)

Clutch arrangement (1) for a drive train of a motor vehicle, having a clutch (2), wherein the clutch (2) comprises a first clutch component (3), which first clutch component (3) comprises a first friction element (4) and a first friction element (4) rotatably receiving friction element carrier (5), and a second coupling component (7), which second coupling component (7) comprises a, with the first friction element (4) drehverbindbares, second friction element (6), and with a coupling (2) between its closed position and its open position adjusting actuator (8), wherein a bearing ring (9) of an actuating bearing (10) of the actuating device (8) is non-slidably coupled to the first friction element (4), wherein a friction element carrier (5) of the first Coupling component (3) in an axial direction of an axis of rotation (11) of the coupling (2) penetrating web portion (12) with the bearing ring (9) of the Betä ment bearing, is in one piece with the first friction element (4), characterized in that the coupling (2) in its open position biasing biasing spring (19) in the axial direction between the friction element carrier (5 ) and one with the web portion (12) fixedly connected portion (20) or the bearing ring (9) is clamped, that the biasing spring (19) from the Reibelementeträgers (5) on a friction element on the carrier (5) fixed support plate (21) is supported and that the friction element carrier (5) is implemented as an outer carrier. Coupling arrangement (1) according to Claim 1 , characterized in that the web portion (12) to a second friction element (6) facing away from side (13) of the first friction element (4) is arranged. Coupling arrangement (1) according to Claim 1 or 2 characterized in that the land portion (12) is a protrusion protruding in the axial direction from a plate-shaped base portion (15) of the first friction member (4). Coupling arrangement (1) according to one of Claims 1 to 3 , characterized in that a plurality of web portions (12) are arranged distributed in a circumferential direction, wherein each web portion (12) by a in the Reibelementeträger (5) provided window (16) protrudes. Coupling arrangement (1) according to one of Claims 1 to 4 , characterized in that the web portion (12) contacting bearing ring (9) of the actuating bearing (10) as a radially inner first Wälzbahn (17) forming the bearing inner ring is formed and the web portion (12) on a plate-shaped support portion (18) of the bearing ring (9), which support portion (18) extends outwardly from the first roller track (17) in a radial direction of the rotation shaft (11). Coupling arrangement (1) according to one of Claims 1 to 5 characterized in that the actuating device (8) has a slave cylinder (22) and a piston (23) of the slave cylinder (22), which piston (23) is directly coupled to a further bearing ring (24) of the actuating bearing (10), is arranged radially outside a plurality of rolling elements (25) of the actuating bearing (10). Coupling arrangement (1) according to one of Claims 1 to 6 , characterized in that the clutch (2) is implemented as a Reiblamellenkupplung.

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