DE102016202134A1 - Coupling system with cover-tight actuator and lying in the coupling support bearing in the form of a cover bearing - Google Patents

Abstract

The invention relates to a clutch system (1) for a motor vehicle drive train, comprising a clutch cover (3) and a lever element (5) mounted pivotably on said clutch cover (3) by means of a pivot bearing (4), and with a clutch Actuating device (6) which has a housing (7), a slide (8) slidably received relative to the housing (7), and an actuation bearing (10) displaceably connected to the slide (8) and displaceably acting on the lever element (5) in which a coupling cover-fixed support region (12) is rotatably mounted on the housing (7) by means of a support bearing (13), wherein the support bearing (13) so far in a radial and / or axial direction of the coupling (2) relative to the actuation bearing ( 10) is arranged at a distance, that the lever element (5) with a radially inside the pivot bearing (4) arranged inside region (14) axially over at least a portion of the Stützl agers (13) is pivoted away.

Description

The invention relates to a coupling system for a motor vehicle driveline, i. a drive train of a motor vehicle, such as a truck, car, bus or agricultural utility vehicle, with a clutch having a clutch cover and a pivotally mounted by means of a pivot bearing on this clutch cover lever element, and with an actuator, a housing, a relative to the housing slidably received slider and a sliding fixed to the slider connected, acting on the lever element acting actuator bearing, wherein a coupling cover fixed support portion is rotatably supported / supported on the housing by means of a support bearing. Due to the bearing over the support bearing, the actuating device is at least along a rotational axis / in the axial direction of the coupling firmly connected to the clutch / the clutch cover.

From the prior art generic coupling systems, ie arrangements / assemblies of coupling and actuator, well known. In this context, the DE 10 2014 213 623 A1 a device for disengaging a clutch, in particular a clutch in a drive train of a motor vehicle, comprising a housing which is arranged rotationally symmetrical about an axis, and a pressure chamber in which a piston is mounted axially movable, wherein a bearing against a plate spring of Clutch trained release bearing is attached to the piston, and a cover bearing for supporting a cover of the clutch. The cover bearing is further connected via a connecting element with the cover of the coupling.

Furthermore, state of the art from the DE 10 2008 021 161 A1 , of the DE 10 2013 209 995 A1 as well as the DE 10 2013 223 653 A1 known.

However, it has proved to be disadvantageous that the previous clutch systems, despite the displacement of the support bearing within the clutch cover / clutch, still take up too much space for some applications. Are the existing bearing support bearings and actuation bearing - approximately in the radial direction, at the same height, i. axially adjacent to each other, these coupling systems usually take a too large axial space. In an alternative arrangement of the two bearings radially nested take the coupling systems usually a too large radial space, in addition, each radially outwardly disposed bearings, such as the support bearing, massive and thus more expensive form.

It is therefore the object of the present invention to remedy these known from the prior art disadvantages and in particular to provide a coupling system available, the space to be further reduced.

This is inventively achieved in that the support bearing is arranged so far apart in a radial and / or axial direction of the coupling relative to the actuating bearing, that the lever element with a radially disposed inside the pivot bearing inner region axially pivotable over at least a portion of the support bearing away / is movable.

Such a relative arrangement between the support bearing and the actuating bearing, the actuator and the clutch at a constant displacement of the slide, especially in the axial direction significantly compact. In addition, the lever element can be reduced in its radial extent, which in turn allows a reduction of the translation. By a smaller pivoting of the lever element and the energy loss during pivoting of the lever element is significantly reduced.

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

If the support bearing is arranged radially inside the actuating bearing, in particular the coupling is formed even more space-saving.

Furthermore, it is advantageous if the support bearing and the actuating bearing are designed as rolling bearings and a plurality of rolling elements of the support bearing are arranged radially within a plurality of rolling elements of the actuating bearing. As a result, the production of the coupling system is further simplified.

If the actuating bearing in this context is larger than an inner diameter of the coupling cover-fixed support region, the ratio of the lever element can be further reduced. Alternatively, it is also possible to form the actuating bearing larger than an outer diameter of the coupling cover-fixed support region.

Is the clutch cover fixed support area also a stoffeinteiliger part of the clutch cover, i. if the clutch cover-fixed support region is formed directly from a material integral / integral component of the clutch cover, the manufacturing effort is further reduced because the number of components is kept low.

Alternatively, however, it is also expedient if the coupling-fixed support region is a connecting element which is attached directly or indirectly to the clutch cover. Thus, in particular, the assembly of the coupling system is simplified.

In this context, it is also advantageous if the connecting element is fastened to a pivot bearing with a forming bolt region (bolt region preferably designed as a separate bolt / rivet bolt), wherein the bolt region is anchored in the clutch cover. As a result, the connecting element is attached in a particularly space-saving manner to already existing elements of the coupling.

If the connecting element is fixed to an axial side of the bolt area facing away from the clutch cover, the connecting element is particularly simply geometrically shaped. Thus, the production costs continue to drop.

If the lever element expediently designed as a plate spring, a particularly compact design of the coupling system is realized, since the lever element snaps spring-elastic with its pivoting.

Furthermore, it is advantageous if the lever element at the inner region by a plurality of circumferentially spaced from each other, elastically pivoted spring tongues (in the case of the plate spring also referred to as plate spring tongues) is formed. This allows a particularly space-saving design of the lever element.

In this context, it is also advantageous if the coupling cover fixed support region has a plurality of circumferentially distributed / distributed through openings, which are adapted to the spring tongues, that the lever element at least with parts of the spring tongues through the through holes (over the entire pivoting of the lever element in Operation away) through pushed / pushed. As a result, the clutch cover is designed to save space.

In other words, is thus a cover-solid actuator, preferably in the form of a releaser, with lying in the coupling support bearing, which is also referred to as a cover bearing implemented. In the prior art already cover-resistant release (abbreviation: DFA) are supported by means of support bearings or cover bearings on the clutch cover. For this purpose, a relatively large radial and / or axial space is necessary. According to the cover-resistant release is mounted more compact. For this purpose, the support bearing is axially installed in the direction of the clutch purely and preferably attached via a carrier plate (connecting element) to bolts (bolt areas) of the clutch cover. Thus, the plate spring / the lever element run when disengaging the support bearing, without abutting this.

As a result, axial space can be saved. The two bearings are thus arranged on the one hand with a radial offset from each other and the diaphragm spring tongue can be axially move upon actuation of the support bearing over.

The invention will now be explained in more detail with reference to figures, in which context also different embodiments are explained.

Show it:

1 a longitudinal sectional view of a coupling system according to the invention according to a first advantageous embodiment, wherein a coupling cover fixed support portion of a coupling is designed as a separately configured by a clutch cover and attached to this connecting element, and

2 a longitudinal sectional view of a coupling system according to the invention according to a second embodiment, wherein the coupling cover fixed support region is now a stoffeinteiliger part of the clutch cover.

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. Also, the different features of the various embodiments can be combined freely with each other.

In 1 is a first embodiment of the coupling system according to the invention 1 illustrated. The coupling system 1 is intended in particular for a motor vehicle drive train. This is indicated by the coupling system 1 a clutch 2 on, which is designed here as a friction clutch. The coupling 2 serves in the usual way as a separable coupling element for torque transmission of torque between an output shaft 21 an internal combustion engine, such as a gasoline or diesel engine, and a transmission shaft, such as a transmission input shaft of a transmission, which is not shown here for clarity sake. The coupling 2 is about an actuator 6 , as described in detail below operated in operation.

The coupling 2 has a first rotary part 22 and a second rotary part 23 on which Turned 22 . 23 depending on a position of a pressure plate 24 the clutch 2 rotatably connected to each other (in a coupled position of the coupling 2 ) or torque transmissionless, ie, are arranged separately from each other (in a disengaged position of the coupling 2 ). The first turned part 22 is here designed as a flywheel, which is also referred to as a pressure plate. The first turned part 22 is also directly with the output shaft 21 rotatably connected.

The second turning part 23 is designed as a clutch disc and thus has a friction lining 25 on, the axially between the pressure plate 24 and the first rotary part 22 is arranged. In addition to this friction lining 25 has the clutch disc / the second rotary part 23 a hub part 26 on, which is non-rotatably in operation, but arranged axially displaceable on the transmission shaft / transmission input shaft. Like the second part 23 , is the pressure plate 24 in the axial direction of the coupling 2 that is along a rotation axis 34 the clutch 2 , relative to the first rotary part 22 displaceable. In 1 is an engaged position of the clutch 2 shown, with the pressure plate 24 so to the second rotary part 23 and thereby the second rotary part 23 turn to the first turned part 22 is pressed that a frictional engagement between the first rotary part 22 and the second rotary part 23 consists. In a disengaged position of the clutch 2 are the turned parts 22 . 23 again spaced apart so that no torque is transmitted between them.

The necessary for the engaged position axial contact pressure of the pressure plate 24 against the second rotary part 23 is by means of a lever element 5 , which is designed as a plate spring, on the pressure plate 24 transfer. The lever element 5 is about a pivot bearing 4 relative to the pressure plate 24 pivoted. This pivotal mounting 4 is on a clutch cover 3 the clutch 2 appropriate. The clutch cover 3 is designed as a substantially pot-shaped extending sheet metal part. The clutch cover 3 is with a first axial side on an end face of the first rotary part 22 is attached and at one, this first axial side, opposite, second axial side with a disc-shaped, in particular in the radial direction inwardly extending side wall region 27 educated. On the sidewall area 27 in turn is the swivel bearing 4 arranged. This sidewall area 27 closes in the axial direction to a sleeve area 28 the clutch cover 3 on, causing the clutch cover 3 Overall, a recording room 29 includes. Inside the recording room 29 , ie in particular radially within the sleeve area 28 , is the second rotary part during operation 23 , the pressure plate 24 and the lever element 5 arranged.

The pivot bearing 4 of the lever element 5 is in a conventional manner at a fixed in the clutch cover 3 anchored bolt area 18 designed. The bolt area 18 is part of a rivet bolt 31 provided with a first axial end portion in an opening of the clutch cover 3 riveted. A second end region, which lies opposite this first end region, projects into the receiving space 29 in the axial direction and penetrates the lever member 5 in the axial direction. On one axial side, ie between the clutch cover 3 and the lever element 5 as well as between a collar 32 of the bolt area 18 and the lever element 5 , is a wire ring 33 used, which two wire rings together two pivot points for pivotal mounting 4 of the lever element 5 form.

At a radially outside of the pivot bearing 4 arranged area is the lever element 5 on the pressure plate 24 in Appendix and are depending on the location of this outer area the position of the pressure plate 24 relative to the first rotary part 22 in front. Radial inside the pivot bearing 4 goes the lever element 5 in a plurality of circumferentially relative to each other via a respective passage opening spaced from each other arranged spring tongues 19 above. These spring tongues 19 are formed as radially inwardly extending tab-shaped projections, the uniform / in cooperation a radial inner region 14 of the lever element 5 form. At this radial interior area 14 , ie on a radial inner side of the spring tongues 19 , is an axially extending / bent nose 30 appropriate. Per spring tongue 19 is a nose 30 designed so that all noses 30 the spring tongues 19 aligned along a uniform plane / axial plane.

For pivoting the lever element 5 for actuating the clutch 2 between the engaged and disengaged positions is an actuator 6 intended. This actuator 6 is preferably constructed and functioning as a fluidic (hydraulic or pneumatic) slave cylinder of an actuation system. Consequently, this actuator has a substantially annular ausgestaltetes housing 7 and one in this case 7 slidably arranged slide 8th in the form of a piston. The slider 8th is thus in the axial direction, ie along the axis of rotation 34 the clutch 2 , slidable in the housing 7 added. With one out of the case 7 in the axial direction protruding end portion is the slider 8th with an actuation bearing 10 connected. In this case, in particular, a first bearing ring 9 , namely a bearing inner ring, non-displaceable and preferably also non-rotatably with the slider 8th connected. The actuation bearing 10 is designed as a rolling bearing and thus has also a second bearing ring 11 on, over several rolling elements (second rolling elements 16 ) relative to the first bearing ring 9 is stored on roller bearings. The second bearing ring 11 in turn is in operation at the front side of a first rotary part 22 in operation facing away from the axial side of the lever element 5 at the interior 14 / the noses 30 the spring tongues 19 at. Thus, the pivotal position of the lever member 5 by means of this actuator 6 , namely by the position of the slider 8th , given.

In this embodiment, the actuator is 6 executed as a release / a release, as indicated by the slide 8th in its unconfirmed position 1 ie in his in the housing 7 retracted position is arranged so that the lever element 5 the pressure plate 24 against the first turned part 22 pushes and thus the engaged position is forced. To disengage the slider 8th then driven and in the axial direction of the housing 7 out, towards the lever element 5 , pressed and pivoted while the lever element 5 at its interior 14 clockwise, disengaging / disengaging the clutch.

The housing 7 the actuator 6 has a sleeve section 35 on, which is arranged in operation coaxial with the transmission shaft. The sleeve section 35 extends so far in the axial direction in the coupling 2 ie in the recording room 29 , in that, at least one axial end portion 36 of the sleeve section 35 into the clutch 2 protrudes. At this end area 36 which is disposed radially inside the sleeve portion is a support bearing 13 intended. This support bearing 13 serves for rotational support of the clutch cover 3 relative to the housing 7 , Also the support bearing 13 is designed as a rolling bearing. A bearing inner ring 37 of the support bearing 13 is rotatable / fixed to the housing 7 connected. A via (first) rolling elements 15 relative to this bearing inner ring 37 rotatably mounted, radially outside of the bearing inner ring 37 arranged, bearing outer ring 38 is with the clutch cover fixed support area 12 rotatably connected. The clutch cover fixed support area 12 is in this embodiment as a separate component, namely as a connecting element 17 designed. The connecting element 17 is preferably made of a metal sheet. The connecting element 17 has a hub region on a radial inner side 39 in the form of a deflection running in the axial direction, the surface on an outer side of the bearing outer ring 38 rests. With a radially outer disc area 40 is the connecting element 17 at the pin area 18 attached. In particular, the disk area 40 in this embodiment, on a first rotary part 22 in operation facing end face of the pin area 18 / Bolzens 31 attached.

According to the invention, the position of the support bearing is now 13 relative to the actuator bearing 10 in the radial direction and in the axial direction chosen so that the interior 14 ie a radial inside of the lever element 5 in the axial direction over a part / partial area of the support bearing 13 can be moved away / pivoted away. This is especially in 1 to recognize. The interior 14 is due to the radially outer arrangement of the actuating bearing 10 relative to the support bearing 13 during its pivoting clockwise over at least a portion of the length of the support bearing 13 pivoted away. There is therefore no collision with the support bearing 13 when pivoting the lever element 5 between the engaged and disengaged positions. Even if here is an axial end face of the second bearing ring 11 as well as the slider 8th agreed, it is also possible in other embodiments, the end face of the second bearing ring 11 further on to the first turned part 22 to let rise as the slide 8th , whereby further pivoting areas on the support bearing 13 away are possible.

This is particularly favored by the fact that the first rolling elements 15 of the support bearing 13 completely within the second rolling elements 16 of the actuating bearing 10 are arranged. This allows the respective bearing rings 9 and 11 on the bearing inner and outer rings 37 and 38 of the support bearing 13 adjust particularly cleverly, so that this at the pivoting of the lever element 5 do not touch each other. In other words, thus is the actuating bearing 10 larger than a radial inner diameter of the clutch cover fixed support area 12 ,

In 2 is shown a further, second embodiment, which is constructed in principle as the first embodiment and works. Therefore, only the essential differences are discussed below. The support area 12 is, unlike in the first embodiment, now as stoffeinteiliger part of the clutch cover 3 educated. The clutch cover 3 thus points in the region of its sidewall area 27 one back to the first turned part 22 towards bent arch area 41 on. The bow area 41 again has the hub region on its radial inner side 39 by means of which he at the bearing outer ring 38 rotatably attached. Furthermore, due to the design of the bow area 41 , are the respective spring tongues 19 in the axial direction through the clutch cover 3 in the area of his bow area 41 passed. The bow area 41 is therefore also designed as a, a plurality of radially extending lugs exhibiting area. Respectively in the circumferential direction between the individual lugs are through holes 20 in the bow area 41 trained so on the spring tongues 19 are tuned that spring tongues 19 and bow area 41 when pivoting the lever element 5 do not collide between the engaged and disengaged positions. Thus, the support bearing is also in this embodiment 13 arranged so that always the interior 14 over a partial length area / partial area of the support bearing 13 is pivoted away.

In other words, according to the invention, the support bearing 13 inside the clutch 2 provided and by means of a support plate (connecting element 17 ) on the inner side of the bolts 31 attached, causing the support bearing 13 on the carrier sheet 17 is mounted and therefore can be made very small, the release bearing (actuator bearing 10 ) Also larger than the inner / outer diameter of the carrier sheet 17 can be executed. Also, the carrier sheet 17 as directly from the clutch cover 3 be formed out part formed. With this bearing arrangement, the clutch has 2 a smaller translation, whereby the Ausrückweg turn smaller, because the translation is smaller and because of the loss due to the tongue deflection of the diaphragm spring 5 gets smaller. This is the DFA / the coupling system 1 much more compact.

LIST OF REFERENCE NUMBERS

1

 coupling system

2

 clutch

3

 clutch cover

4

 pivot bearing

5

 lever member

6

 actuator

7

 casing

8th

 pusher

9

 first bearing ring

10

 operation seat

11

 second bearing ring

12

 support area

13

 support bearings

14

 interior

15

 first rolling element

16

 second rolling element

17

 connecting element

18

 bolt area

19

 spring tongue

20

 Through opening

21

 output shaft

22

 first turned part

23

 second rotary part

24

 pressure plate

25

 friction lining

26

 hub part

27

 Sidewall region

28

 sleeve region

29

 accommodation space

30

 nose

31

 rivet bolts

32

 collar

33

 wire ring

34

 axis of rotation

35

 sleeve section

36

 end

37

 Bearing inner ring

38

 Bearing outer ring

39

 hub area

40

 disk area

41

 arch area

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102014213623 A1 [0002]
• DE 102008021161 A1 [0003]
• DE 102013209995 A1 [0003]
• DE 102013223653 A1 [0003]

Claims (10)

Coupling system ( 1 ) for a motor vehicle drive train, with a clutch ( 2 ), which has a clutch cover ( 3 ) and by means of a pivot bearing ( 4 ) pivotable on this clutch cover ( 3 ) mounted lever element ( 5 ), and with an actuating device ( 6 ), which is a housing ( 7 ), one relative to the housing ( 7 ) slidably received slider ( 8th ) as well as a slide-resistant with the slider ( 8th ), adjusting on the lever element ( 5 ) actuating bearing ( 10 ), wherein a clutch cover fixed support area ( 12 ) on the housing ( 7 ) by means of a support bearing ( 13 ) is rotatably mounted, characterized in that the support bearing ( 13 ) so far in a radial and / or axial direction of the coupling ( 2 ) relative to the actuating bearing ( 10 ) is arranged spaced, that the lever element ( 5 ) with a radially inside the pivot bearing ( 4 ) arranged inside area ( 14 ) axially over at least a portion of the support bearing ( 13 ) is pivoted away. Coupling system ( 1 ) according to claim 1, characterized in that the support bearing ( 13 ) radially within the actuating bearing ( 10 ) is arranged. Coupling system ( 1 ) according to claim 1 or 2, characterized in that the support bearing ( 13 ) as well as the actuating bearing ( 10 ) are designed as rolling bearings and a plurality of rolling elements ( 15 ) of the support bearing ( 13 ) radially within a plurality of rolling elements ( 16 ) of the actuating bearing ( 10 ) are arranged. Coupling system ( 1 ) according to one of claims 1 to 3, characterized in that the actuating bearing ( 10 ) greater than an inner diameter of the clutch cover-fixed support area ( 12 ). Coupling system ( 1 ) according to one of claims 1 to 4, characterized in that the coupling cover fixed support area ( 12 ) a stoffeinteiliger part of the clutch cover ( 3 ). Coupling system ( 1 ) according to one of claims 1 to 4, characterized in that the coupling cover fixed support area ( 12 ) a connecting element ( 17 ), which directly or indirectly on the clutch cover ( 3 ) is attached. Coupling system ( 1 ) according to claim 6, characterized in that the connecting element ( 17 ) at a pivot bearing ( 4 ) with forming pin area ( 18 ), the bolt area ( 18 ) in the clutch cover ( 3 ) is anchored. Coupling system ( 1 ) according to one of claims 1 to 7, characterized in that the lever element ( 5 ) is designed as a plate spring. Coupling system ( 1 ) according to one of claims 1 to 8, characterized in that the lever element ( 5 ) on the inside ( 14 ) by a plurality of circumferentially spaced from each other, elastically pivotable spring tongues ( 19 ) is trained. Coupling system ( 1 ) according to claim 9, characterized in that the clutch cover fixed support area ( 12 ) a plurality of circumferentially distributed passage openings ( 20 ), which on the spring tongues ( 19 ), that the lever element ( 5 ) at least with parts of the spring tongues ( 19 ) through the passage openings ( 20 ) is pushed or pushed therethrough.

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