DE102018108568B3 - Compensation device for compensating an axial offset between an output part of a friction clutch and an input part of a transmission, and friction clutch - Google Patents

Abstract

Balancing device (1) for compensating an axial offset between an output part (2) of a friction clutch (3) and an input part of a transmission, comprising: - a hub (4) having a first slot (5) and a second slot (6), the Hub (4) about a hub axle (7) is rotatable, - a first counter-disc (8) and a second counter-disc (9), between which the hub (4) is arranged and the at least one first pin (10) and a second Bolt (11) are interconnected, wherein the first bolt (10) in the first slot (5) and the second bolt (11) in the second slot (6) are guided, so that the first counter-disc (8) and the second counter-disc (9) movable in a radial direction (12) relative to the hub (4) and rotatable about a counter-disc axis (13); and - at least one spring (14, 15) by means of which the counter-disk axis (13) coaxial with the hub axle (7) is durable. In addition, a friction clutch (3) with a corresponding compensating device (1) is proposed.

Description

The present invention relates to a compensating device for compensating an axial offset between an output part of a friction clutch of a motor vehicle and an input part of a transmission, as well as a friction clutch with a corresponding compensating device.

The output part of the friction clutch regularly has a hub, which is connected in operation via an internal toothing with a transmission input shaft of a transmission. The output part and the transmission input shaft are each rotatable about an axis of rotation, wherein, for example, tolerance tolerance can lead to an axial offset or an axial displacement between the output part and the transmission input shaft. To compensate for this axial offset or the axial displacement has already been proposed in the toothing between the hub and the transmission input shaft and in a toothing between the hub and a counter-disc, against which a disk set of the friction clutch to close the friction clutch with a spring means is braced, a game train. However, the axial offset or the axis shift is often greater than can be compensated by the game. An enlargement of the game is not possible because of this unbalance problems can arise.

From the DE 10 2015 225 319 A1 is a compensating device for compensating a radial offset within a multi-plate clutch known. From the DE 10 2016 210 462 A1 is known a clutch disc with offset compensation device. From the DE 10 2014 222 592 A1 is a drive for a mechanical press with an offset compensation device known. From the DE 10 2006 048 678 A1 For example, an offset compensation device for two shafts is known.

The object of the invention is therefore to at least partially solve the problems described with reference to the prior art and in particular to provide a compensating device with which large axial offsets or axial displacements can be compensated. In addition, a friction clutch is to be specified, with the compensation device large axle offsets or axle displacements can be compensated.

These objects are achieved with a compensating device and a friction clutch according to the features of the independent claims. Further advantageous embodiments of the invention are specified in the dependent claims. It should be noted that the features listed individually in the dependent claims can be combined with each other in any technologically meaningful manner and define further embodiments of the invention. In addition, the features specified in the claims are specified and explained in more detail in the description, wherein further preferred embodiments of the invention are shown.

• - eine Nabe mit einem ersten Schlitz und einem zweiten Schlitz, wobei die Nabe um eine Nabenachse drehbar ist;
• - eine erste Gegenscheibe und eine zweite Gegenscheibe, zwischen denen die Nabe angeordnet ist und die über zumindest einen ersten Bolzen und einen zweiten Bolzen miteinander verbunden sind, wobei der erste Bolzen in dem ersten Schlitz und der zweite Bolzen in dem zweiten Schlitz geführt sind, sodass die erste Gegenscheibe und die zweite Gegenscheibe in einer radialen Richtung relativ zu der Nabe bewegbar und um eine Gegenscheibenachse drehbar sind; und
• - zumindest eine Feder, mittels der die Gegenscheibenachse koaxial zu der Nebenachse haltbar ist.

For this purpose, a compensation device for compensating an axial offset between an output part of a friction clutch and an input part of a transmission, which has at least the following components:

• a hub having a first slot and a second slot, the hub being rotatable about a hub axle;
• a first counter-disc and a second counter-disc between which the hub is arranged and which are interconnected via at least a first bolt and a second bolt, the first bolt being guided in the first slot and the second bolt being guided in the second slot the first counter-disc and the second counter-disc are movable in a radial direction relative to the hub and are rotatable about a counter-disc axis; and
• - At least one spring by means of which the counter-disk axis is coaxial with the minor axis durable.

The proposed compensation device is particularly useful in connection with a (dry) friction clutch, preferably a dry multi-plate clutch, for a drive train of a motor vehicle, such as a passenger car, truck and / or motorcycle usable. Such motor vehicles regularly have a drive motor for driving the motor vehicle. The at least one drive motor may in particular be an internal combustion engine, electric motor or hybrid engine for driving the motor vehicle. Such motor vehicles regularly have a transmission, which may be designed, for example, as an automatic transmission or a manual transmission manually shifted by a driver.

The balancing device has a hub with a first slot and a second slot. The hub may (directly or indirectly) be connectable to a transmission input shaft of the transmission or an intermediate shaft and / or be part of an output part of the friction clutch. For rotationally fixed connection of the hub with the transmission input shaft or intermediate shaft, the hub may in particular have an internal toothing. The hub is rotatable about a hub axle which may be coaxial with a center axis of the hub. The first slot and / or the second slot can according to Art be formed a backdrop. Furthermore, the first slot and / or the second slot may be disposed in arms of the hub which may extend in a radial direction (with respect to the hub axle).

Furthermore, the compensation device has a first counter-disc and a second counter-disc. The first counter-disc and / or the second counter-disc may be formed as sheet metal components. The hub or the arms of the hub are arranged between the first counter-disc and the second counter-disc. The first counter-disc and / or the second counter-disc can serve in a friction clutch as a counter-pressure discs of a disc pack. Furthermore, the first counter-disc and the second counter-disc are connected to each other via at least a first pin and a second pin. The first bolt and / or the second bolt may be formed at least partially cylindrical and / or at least partially made of metal. In particular, the first bolt and / or the second bolt may be designed in the manner of a rivet, flat rivet or spacer bolt. The first bolt is guided in the first slot of the hub and the second bolt in the second slot of the hub, so that the second counter-disk is movable in the radial direction relative to the hub and rotatably supported about a counter-disk axis. The first bolt and the second bolt thus ensure a torque transmission from the hub to the counter-disks or vice versa. The counter-disk axis can extend coaxially to a center axis of the counter-disks. Due to the mobility of the counter discs relative to the hub axle offsets or axle displacements between an output part of the friction clutch and an input part of the transmission are compensated.

Furthermore, the compensation device comprises at least one spring by means of which the counter-disk axis is coaxial with the hub axle durable. This means, in particular, that the counter discs are held by the at least one spring relative to the hub in a defined position. The at least one spring may be a compression spring. Furthermore, the at least one spring may be designed in the manner of a tension spring, disc spring or rubber fault. In addition, the at least one spring can also be integrated in one of the two counter-disks, for example by the deflection of punched arms.

The first slot and the second slot may be parallel to each other. In particular, the first slot and the second slot have a straight course. The first slot and / or the second slot may have a width that corresponds (substantially) to a diameter of the first bolt and / or the second bolt.

In particular, the first counter-disk and the second counter-disk may be movable only along the first slot and the second slot relative to the hub. If radial movability in all (radial) directions is to be enabled, a second set of a first mating washer, second mating washer, first bolt, second bolt and at least one spring may be provided, wherein a first slot and a second slot are the hub of the second set perpendicular to the first slot and the second slot of the hub of the first set. This allows the counter-disks of the second set to be movable in all directions with respect to the hub.

Torque can be transmittable between the hub and the two counter-disks via the first bolt and the second bolt.

The first bolt and the second bolt may be riveted on the second mating disk. In particular, the first pin and the second pin may be riveted to the first counter-disc and the second counter-disc.

The at least one spring may generate a spring force oriented in the same direction as the first slot and the second slot.

The balancing device may comprise a first spring and a second spring, wherein the first spring in a first opening of the hub and the second spring are arranged in a second opening of the hub.

The first spring may lie on a first secant and the second spring on a second secant, with the first secant and the second secant being equidistant from the hub axis. In particular, a secant is a straight line that cuts a circle in two points but does not go through the center of the circle.

The first counter-disc and the second counter-disc may have tabs with which the first spring in the first opening and the second spring are held in the second opening. By the tabs, the first spring and / or the second spring in particular against release from the first opening and / or second opening in an axial direction, d. H. be secured parallel to the hub axle and / or the counter-disk axis.

• - ein Eingangsteil mit einem durch zumindest einen Antriebsmotor um eine Drehachse drehbaren Außenlamellenträger, wobei an dem Außenlamellenträger zumindest eine Außenlamelle befestigt ist;
• - ein Ausgangsteil mit einem Innenlamellenträger, wobei an dem Innenlamellenträger zumindest eine Innenlamelle befestigt ist; und
• - zumindest eine Federeinrichtung, mit der die zumindest eine Außenlamelle und die zumindest eine Innenlamelle zum Schließen der Reibkupplung zwischen einer Anpressscheibe und einer Gegenscheibe einer erfindungsgemäßen Ausgleichsvorrichtung verspannbar sind.

According to a further aspect of the invention, a friction clutch for a drive train of a motor vehicle is also specified, which has at least the following components:

• - an input part with an at least one drive motor about an axis of rotation rotatable outer disk carrier, wherein at least one outer disk is attached to the outer disk carrier;
• - An output part with an inner disk carrier, wherein at least one inner disk is attached to the inner disk carrier; and
• - At least one spring means, with which the at least one outer fin and the at least one inner fin for closing the friction clutch between a pressure disc and a counter-disc of a compensating device according to the invention are clamped.

The friction clutch comprises a drive-side input part rotatably arranged about an axis of rotation by means of the drive motor and can be connected directly or indirectly to, for example, a crankshaft of the drive motor or a rotor of an electric motor or hybrid motor. Furthermore, the friction clutch comprises a relation to the input part coaxially and rotatably about the rotational axis arranged output part which is indirectly or directly connectable, for example, with a transmission input shaft of the transmission.

Between the input part and the output part is provided in a circumferential direction about the axis of rotation effective, switchable between an open position and closed position friction unit. The friction unit comprises at least one outer disk rotationally fixed to an outer disk carrier of the input part and at least one inner disk rotationally fixed to an inner disk carrier of the output part. The at least one outer disk can be connected via a toothing with the outer disk carrier and / or the at least one inner disk via a toothing with the inner disk carrier. The inner disk carrier is in particular annular, at least partially tubular, at least partially made of steel and / or has an L-shaped cross-section. Furthermore, the inner disk carrier in an axial direction, d. H. parallel to the axis of rotation, relative to the outer disk carrier be formed limited displaced.

The at least one outer fin and the at least one inner fin may be in an axial direction, i. H. in particular parallel to the axis of rotation, be arranged alternately laminated to a disk set. Furthermore, the at least one outer fin and / or the at least one inner fin are in particular annular and / or at least partially made of steel. In addition, the at least one outer disk and / or the at least one inner disk may have friction linings.

The at least one outer disk and the at least one inner disk can be clamped or frictionally engaged for closing or engaging the friction clutch by a contact force of at least one spring device between a pressure plate and a counter disk of a compensating device according to the invention. The at least one spring device is in particular a plate spring. The friction clutch is in particular normal-engaged by the at least one spring device. The friction clutch can be disengaged with an actuating device, for example in the manner of a central release mechanism, in that the actuating device, for example, pivots the at least one spring device. For further details, reference is made to the description of the compensating device.

• 1: eine Ausgleichsvorrichtung in einer Seitendarstellung;
• 2: die Ausgleichsvorrichtung in einer Frontansicht;
• 3: die Ausgleichsvorrichtung in der Frontansicht ohne eine erste Gegenscheibe;
• 4: eine zweite Gegenscheibe der Ausgleichsvorrichtung in einer perspektivischen Darstellung;
• 5: die erste Gegenscheibe der Ausgleichsvorrichtung in einer perspektivischen Darstellung;
• 6: eine Nabe der Ausgleichsvorrichtung in einer perspektivischen Darstellung;
• 7: eine Reibkupplung mit der Ausgleichsvorrichtung in einer perspektivischen Schnittdarstellung.

The invention and the technical environment will be explained in more detail with reference to FIGS. It should be noted that the figures show a particularly preferred variant of the invention, but this is not limited thereto. The same components are provided in the figures with the same reference numerals. They show by way of example and schematically:

• 1 : a balancing device in a side view;
• 2 : the equalization device in a front view;
• 3 : the balancing device in the front view without a first counter-disc;
• 4 a second counter-disc of the balancing device in a perspective view;
• 5 : the first counter-disc of the balancing device in a perspective view;
• 6 a hub of the balancing device in a perspective view;
• 7 : A friction clutch with the compensating device in a perspective sectional view.

The 1 shows a balancing device 1 in a page presentation. The balancing device 1 includes a hub 4 that is between a first mating disk 8th and a second mating disk 9 is arranged and around a hub axle 7 is rotatably connectable with a transmission input shaft of a transmission, not shown here. The first counter-disc 8th and the second mating disk 9 are about a first bolt 10 and second bolt 11 connected to each other. The first bolt 10 and the second bolt 11 are here designed in the manner of rivets and connect the first counter-disc 8th and the second mating disk 9 rotatably with the hub 4 , The first counter-disc 8th and the second mating disk 9 are therefore a common counter-disk axis 13 rotatable, which here coaxial with the hub axle 7 runs.

The 2 shows the balancing device 1 in a front view. The hub 4 has an internal toothing 32 on top of that the hub 4 rotationally fixed to the transmission input shaft of the transmission, not shown here is connectable.

The 3 shows the balancing device 1 in the front view without the in the 1 and 2 shown first counter-disc 8th , The hub 4 has a in a radial direction 12 extending first arm 33 , second arm 34 , third arm 35 and fourth arm 36 on. In the first arm 33 is a first slot 5 and in the second arm 34 a second slot 6 educated. The first bolt 10 is in the first slot 5 and the second bolt 11 in the second slot 6 guided. The first slot 5 and the second slot 6 run parallel to each other in the radial direction 12 , This is the in the 1 and 2 shown first counter-disc 8th and the second mating disk 9 with the first bolt 10 and the second bolt 11 in the direction of in the 3 shown movement arrow 38 ie in the radial direction 12 in the first slot 5 and the second slot 6 relative to the hub 4 movable. In the third arm 35 the hub 4 is a first opening 16 and in the fourth arm 36 a second opening 17 educated. In the first opening 16 is a first spring 14 and in the second opening 17 a second spring 15 arranged. The first spring 14 lies on a first secant 18 and the second spring 15 on a second secant 19 , where the first secant 18 and the second secant 19 equidistant from the hub axle 7 are opposite. At the first spring 14 and the second spring 15 it is here in each case a spiral spring. The first spring 14 has a first longitudinal axis 37 parallel to the first secant 18 runs, and the second spring 15 a second longitudinal axis 39 parallel to the second secant 19 runs, up. The first spring 14 and the second spring 15 each generate a spring force in the same direction as the first slot 5 and the second slot 6 are oriented. Furthermore, the first spring 14 and the second spring 15 biased and supported with their longitudinal ends at the first opening 16 and the second opening 17 from. In a relaxed condition, hold the first spring 13 and the second spring 14 the counter-disk axis 13 coaxial with the hub axle 7 , Kick between the counter-washers 8th . 9 and the transmission input shaft, not shown here, an axial offset, move in the 1 and 2 shown first counter-disc 8th and the second mating disk 9 relative to the hub 4 in the radial direction 12 so the first spring 14 and the second spring 15 be tense. The hub axle 7 and the counter-disk axis 13 then run parallel to each other, but no longer coaxial. In other words, the axial offset between the counter-disks 8th . 9 and the transmission input shaft by a movement of the first counter-disc 8th and second counter-washers 9 opposite the hub 4 compensated.

The 4 shows the second mating disk 9 in a perspective view. The second opposite disc 9 is annular and has a first inner surface 42 one in the radial direction 12 extending first recess 40 for those in the 3 shown first spring 14 and one in the radial direction 12 extending second recess 41 for those in the 3 shown second spring 15 on, with the first recess 40 and the second recess 41 are opposite. The first spring 14 is supported with its longitudinal ends on the first recess 40 and the second spring 15 with its longitudinal ends at the second recess 41 from. In the area of the first recess 40 is a first tab 20 and in the region of the second recess 41 a second tab 21 formed, with which the first spring 14 and the second spring 15 against release from the first recess 40 and second recess 41 in an axial direction 44 ie parallel to that in the 1 and 3 shown hub axle 7 and / or counter-disk axis 13 , is secure. The second opposite disc 9 also has holes 45 for connecting the second counter disks 9 to a clutch core, not shown here.

The 5 shows the first mating disk 8th in a perspective view. The first counter-disc 8th is also annular and has a second inner surface 43 one in the radial direction 12 extending third recess 46 for those in the 3 shown first spring 14 and one in the radial direction 12 extending fourth recess 47 for those in the 3 shown second spring 15 on, with the third recess 46 and fourth recess 47 are opposite. The first spring 14 is supported with its longitudinal ends on the third recess 46 and the second spring 15 with its longitudinal ends at the fourth recess 47 from. In the area of the third recess 46 is a third tab 22 and in the area of the fourth recess 47 a fourth tab 23 formed, with which the first spring 14 and the second spring 15 against release from the third recess 46 and fourth recess 47 in the axial direction 44 is secure.

The 6 shows the hub 4 in a perspective view. The first opening 16 and the second opening 17 extend parallel to the first slot 5 and the second slot 6 the first opening 16 and the second opening 17 each have a rejuvenation 48 on whose diameter (essentially) an outer diameter of the in the 3 shown first spring 14 and second spring 15 matches, so the first spring 14 and the second spring 15 in the radial direction 12 through the first opening 16 and the second opening 17 are held.

The 7 shows a friction clutch 3 in a perspective longitudinal section. In particular, it is in the friction clutch 3 around a dry multi-plate clutch. The friction clutch 3 indicates on a motor side 49 arranged entrance part 24 and one on a transmission side 50 arranged output part 2 on. The entrance part 24 includes one about an axis of rotation 25 by a non-illustrated drive motor or internal combustion engine rotatable outer disk carrier 26 on which a variety of outer plates 27 are secured against rotation about a toothing not shown here. The starting part 2 includes a coaxial with the outer disc carrier 26 arranged and also about the axis of rotation 3 rotatable inner disc carrier 28 on, on which a multiplicity of inner fins 29 are secured against rotation about a toothing also not shown here. The outer disks 27 and the inner disc carrier 29 are by a spring device 30 , which is a plate spring, to close the friction clutch 3 between a pressure washer 31 and the second mating disk 9 the equalization device 1 braced. With closed friction clutch 3 is a torque of a drive motor, not shown here on the outer disc carrier 26 , the outer plates 27 , the inner fins 29 , the inner disk carrier 28 and the second mating disk 9 on the hub 4 transferable. The hub 4 is about their internal teeth 32 connectable with a transmission input shaft of a transmission, not shown here.

LIST OF REFERENCE NUMBERS

1

balancer

2

output portion

3

friction clutch

4

hub

5

first slot

6

second slot

7

hub axle

8th

first counter-disc

9

second mating disk

10

first bolt

11

second bolt

12

radial direction

13

Against disk axis

14

first spring

15

second spring

16

first opening

17

second opening

18

first secant

19

second secant

20

first tab

21

second tab

22

third tab

23

fourth tab

24

introductory

25

axis of rotation

26

External disk carrier

27

outer plate

28

Inner disk carrier

29

inner plate

30

spring means

31

pressure disc

32

internal gearing

33

first arm

34

second arm

35

third arm

36

fourth arm

37

first longitudinal axis

38

movement arrow

39

second longitudinal axis

40

first recess

41

second recess

42

first inner surface

43

second inner surface

44

axial direction

45

drilling

46

third recess

47

fourth recess

48

rejuvenation

49

engine

50

transmission side

Claims (10)

Compensation device (1) for compensating an axial offset between an output part (2) a friction clutch (3) and an input part of a transmission, comprising: - a hub (4) having a first slot (5) and a second slot (6), said hub (4) being rotatable about a hub axle (7); a first counter-disc (8) and a second counter-disc (9), between which the hub (4) is arranged and which are connected to each other via at least a first pin (10) and a second pin (11), wherein the first pin ( 10) in the first slot (5) and the second pin (11) in the second slot (6) are guided, so that the first counter-disc (8) and the second counter-disc (9) in a radial direction (12) relative to the Hub (4) are movable and about a counter-disk axis (13) are rotatable; and - at least one spring (14, 15) by means of which the counter-disk axis (13) is coaxial with the hub axle (7). Compensating device (1) after Claim 1 wherein the first slot (5) and the second slot (6) are parallel to one another. Compensating device (1) according to one of the preceding claims, wherein the first counter-disc (8) and the second counter-disc (9) are movable only along the first slot (5) and the second slot (6) relative to the hub (4). Compensation device (1) according to one of the preceding claims, wherein on the first pin (10) and the second pin (11) a torque between the hub (4) and the two counter-discs (8, 9) is transferable. Compensation device (1) according to one of the preceding claims, wherein the first pin (10) and the second pin (11) on the second counter-disc (9) are riveted. A balancing device (1) according to any one of the preceding claims, wherein the at least one spring (14, 15) generates a spring force oriented in the same direction as the first slot (5) and the second slot (6). Compensating device (1) according to one of the preceding claims, comprising a first spring (14) and a second spring (15), wherein the first spring (14) in a first opening (16) of the hub (4) and the second spring (15 ) are arranged in a second opening (17) of the hub (4). Compensating device (1) after Claim 7 wherein the first spring (14) lies on a first secant (18) and the second spring (15) lies on a second secant (19), the first secant (18) and the second secant (19) equidistant from one another the hub axle (7) are opposite. Compensating device (1) after Claim 7 or 8th in that the first counter-disc (8) and the second counter-disc (9) have lugs (20, 21, 22, 23) with which the first spring (14) in the first opening (16) and the second spring (15) in the second opening (17) are held. A friction clutch (3) for a drive train of a motor vehicle, comprising: - An input part (24) having a by at least one drive motor about an axis of rotation (25) rotatable outer disk carrier (26), wherein on the outer disk carrier (26) at least one outer disk (27) is fixed; - An output part (2) with an inner disc carrier (28), wherein on the inner disc carrier (28) at least one inner plate (29) is fixed; and - At least one spring means (30), with which the at least one outer plate (27) and the at least one inner plate (29) for closing the friction clutch (3) between a contact pressure plate (31) and a counter-disc (8, 9) a compensating device (1 ) can be braced according to one of the preceding claims.

Images