DE102018108049A1 - Clutch disc with friction device having pendulum rocker damper; as well as friction clutch - Google Patents

Abstract

The invention relates to a clutch disc (1) for a friction clutch of a motor vehicle, having an input part (4) rotatable about an axis of rotation (2), a friction lining (3), an output part (5) which is likewise rotatable about the axis of rotation (2) and the pendulum rocker damper (6) further comprising a first flange portion (7) connected to the input member (4), one in a limited angular range relative to the first flange portion (7) ) about the rotational axis (2) rotatable, with the output part (5) connected to the second flange portion (8) and two each via a link device (9, 10) with the two flange portions (7, 8) motion-coupled intermediate parts (11a, 11b) , and wherein a spring unit (12) interacts with the link mechanisms (9, 10) in such a way that relative movement of the intermediate parts (11, 11) relative to each other during a relative rotation of the flange portions (7, 8) a, 11b) is restrained from each other by the spring unit (12), wherein a friction device (13) is arranged inside or outside a spring element (14) of the spring unit (12) and acts by the friction device (13) in a first Relative movement range of the intermediate parts (11a, 11b) a higher relative movement of the intermediate parts (11a, 11b) inhibiting frictional force is generated as in a second movement range of the intermediate parts (11a, 11b) offset from the first movement range. In addition, the invention relates to a friction clutch with this clutch disc (1).

Description

The invention relates to a clutch disc for a friction clutch of a motor vehicle, such as a car, truck, bus or other commercial vehicle, with a pivotable about an axis of rotation, having a friction lining input part, also rotatable about the axis of rotation output part and the input part to the output part coupling pendulum damper wherein the pendulum rocker damper further comprises a first flange portion connected to the input member, a second flange portion rotatable about the rotation axis relative to the first flange portion, connected to the output member, and two intermediate members respectively coupled to the two flange portions via a link mechanism, and wherein a spring unit cooperates with the link mechanisms such that upon a relative rotation of the flange portions relative to each other, a relative movement of the intermediate parts toward one another is inhibited by the spring unit is protected. In addition, the invention relates to a friction clutch for a drive train of a motor vehicle, with a pressure plate and a frictionally engaged with the pressure plate clutch disc.

Generic prior art is already well known. The DE 10 2015 211 899 A1 discloses, for example, a torsional vibration damper with an input part arranged around a rotation axis and an output part which is rotatable relative to the input part about the rotation axis and counter to the action of a spring device.

Moreover, from the EP 1 602 854 A2 a device for absorbing torque fluctuations known.

In the embodiments known from the prior art, however, it has proved to be disadvantageous that in operation at an unavoidable passage of natural resonance critical vibration conditions can arise. Under certain circumstances, the pendulum rocker damper can not work correctly in these oscillation ranges and accordingly reliably dampen the rotational irregularities of the internal combustion engine.

It is therefore an object of the present invention to overcome the known from the prior art disadvantages and in particular to implement a pendulum rocker damper in a clutch disc, which converts the most constant damping performance over the entire speed range away.

This is inventively achieved in that a friction device is arranged inside or outside of a spring element of the spring unit and acts that a higher the relative movement of the intermediate parts inhibiting frictional force is generated by the friction device in a first relative range of motion of the intermediate parts as in a to the first range of motion offset second relative range of motion of the intermediate parts. Thus, a friction device is selectively used to generate a position-dependent friction force.

By means of this use of a friction device, frictional forces are specifically generated for the active damping of the corresponding natural resonances, which convert the vibration energy into heat. Thus, the pendulum rocker damper is designed significantly more powerful. A hysteresis of the spring unit is cleverly adjustable.

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

If the spring element (the spring unit) clamped between a first intermediate part and a second intermediate part is designed as a helical compression spring, the spring element is made particularly compact.

It is also advantageous if the friction device is arranged to a radial outer side of the spring element, with respect to a longitudinal extent / longitudinal axis of the spring element, or to a radial inner side of the spring element, with respect to the longitudinal extension / longitudinal axis of the spring element. Depending on the available space, the entire clutch disc can then also form very compact.

If the friction device has a first friction element fastened to the first intermediate part and a second friction element which is frictionally engaged with the first friction element and which is attached to the second intermediate part, the friction device is particularly simple in construction.

If the first friction element seen in a transverse direction of the spring element (/ transverse to the longitudinal extent) rigid / non-deformable / inflexible and the second friction element in the transverse direction of the spring element relative to the first friction element (elastically) deformable, the first friction element is particularly easy to produce.

The second friction element is particularly preferably equipped with at least one deformable in the transverse direction of the spring element friction arm, which in the first relative range of motion of the intermediate parts on a side surface ( preferably a radial outer surface) of the first friction element (rubbing) is applied. Thus, the friction arm is preferably under a radial bias on the side surface of the first friction element.

In this context, it is particularly expedient if the side surface of the first friction element tapers / reduces in diameter toward the second intermediate part. This makes it possible to adjust the frictional force particularly cleverly as a function of the relative position of the intermediate parts in the first movement range.

The second friction element is more preferably formed as a pin or a sleeve, so that it cleverly radially within the spring element (in the embodiment as a pin) or radially outside to the spring element around (when designed as a sleeve), arranged to save space.

Furthermore, it is advantageous if the (first and second) friction elements are matched to one another in such a way that they are arranged at a distance from one another in the second relative movement range of the intermediate parts, i. in that the friction device is deactivated in the second relative movement range (friction force generated by the friction device is minimal / zero). As a result, the friction device is further improved in its wear behavior.

Moreover, it is advantageous if the first friction element is composed of a plurality of longitudinal regions which differ in terms of their friction coefficients. The different friction coefficients are particularly preferably implemented by different materials. Thus, it is particularly preferred if, in particular, the first friction element is formed over its extension along the longitudinal axis (in a plurality of adjoining longitudinal regions) by different materials. It has been found to be particularly preferred if the second friction element in longitudinal areas of metal, such as steel, or plastic of the type polyamide with an admixture of carbon fibers, Teflon and / or graphite. As a result, the frictional force is adjusted particularly cleverly as a function of the first relative movement range of the intermediate parts.

Furthermore, the invention relates to a friction clutch for a drive train of a motor vehicle, with a pressure plate and, with the pressure plate frictionally engageable, clutch disc according to the invention according to at least one of the embodiments described above.

In other words, according to the invention, a clutch disc is realized with pendulum rocker damper with hysteresis device (friction device). It is proposed to provide at least one spring (spring element) of the pendulum rocker damper with a friction device for generating a position-dependent friction force, wherein the friction device is arranged inside or outside the spring.

The invention will now be explained in more detail with reference to figures.

• 1 eine perspektivische Darstellung einer erfindungsgemäßen Kupplungsscheibe nach einem ersten Ausführungsbeispiel, wobei der prinzipielle Aufbau eines in der Kupplungsscheibe eingesetzten Pendelwippendämpfers gut zu erkennen ist,
• 2 eine Querschnittdarstellung eines Bereichs des in 1 eingesetzten Pendelwippendämpfers, wobei der Aufbau einer zusammen mit einer Federeinheit zwischen zwei Zwischenteilen des Pendelwippendämpfers wirkenden Reineinrichtung zu erkennen ist,
• 3 eine perspektivische Ansicht des in Querrichtung geschnittenen, in 2 dargestellten Bereichs des Pendelwippendämpfers,
• 4 eine Querschnittsdarstellung eines Bereichs eines Pendelwippendämpfers, wie er in einer erfindungsgemäßen Kupplungsscheibe nach einem zweiten Ausführungsbeispiel eingesetzt ist, wobei sich die Reibeinrichtung in ihrer Ausbildung von der Reibeinrichtung des ersten Ausführungsbeispiels derart unterscheidet, dass sie nun außerhalb eines Federelementes der Federeinheit angeordnet ist, und
• 5 eine perspektivische Ansicht des in Querrichtung geschnittenen, in 4 dargestellten Bereichs des Pendelwippendämpfers.

Show it:

• 1 a perspective view of a clutch disc according to the invention according to a first embodiment, wherein the basic structure of a used in the clutch disc pendulum rocker is clearly visible,
• 2 a cross-sectional view of a portion of the in 1 used pendulum rocker damper, wherein the structure of a acting together with a spring unit between two intermediate parts of the pendulum rocker dam clean device can be seen,
• 3 a perspective view of the cut in the transverse direction, in 2 represented area of the pendulum rocker damper,
• 4 a cross-sectional view of a portion of a pendulum rocker damper, as used in a clutch disc according to a second embodiment, wherein the friction device differs in its formation of the friction device of the first embodiment so that it is now located outside a spring element of the spring unit, and
• 5 a perspective view of the cut in the transverse direction, in 4 shown area of the pendulum rocker damper.

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 clutch disc according to the invention 1 to recognize according to a first embodiment in its basic structure. The clutch disc 1 is used in operation in a typical manner in a friction clutch and is therefore in operative connection with a pressure plate, not shown here for the sake of clarity. Typically, the clutch disc is 1 in a closed position of the friction clutch frictionally engaged with this pressure plate and arranged freely rotatable in an open position of the friction clutch relative to the pressure plate. The Friction clutch is in turn preferably in a drive train of a motor vehicle, namely seen directly between an internal combustion engine and a transmission of the drive train along the torque transmission flux arranged.

The clutch disc 1 has in principle an input part 4 , an exit part 5 and one between the entrance part 4 and the output part 5 acting pendulum rocker damper 6 on. The entrance part 4 has a Reibbelagträger 19 and one on this friction lining 19 applied / fixed friction lining 3 on. In particular, to each axial side of the friction lining carrier 19 (along a rotation axis 2 the clutch disc 1 seen) a friction lining 3 arranged. The integral ring-shaped input part 4 is about the axis of rotation 2 rotatably arranged. Coaxial to the entrance section 4 radially inward of the input part 4 , is a starting part 5 also around the axis of rotation 2 rotatably arranged. The starting part 5 forms a hub in a typical way 20 from, which is rotationally connected during operation with a shaft of the drive train, not shown here for the sake of clarity, such as a transmission input shaft of the transmission. The pendulum rocker damper 6 is used in a typical way to dampen rotational irregularity of the drive train. A rotational nonuniformity which usually occurs on the part of the internal combustion engine is typically transmitted via the input part 4 in the clutch disc 1 initiated and by the pendulum rocker damper 6 in the transmission path from the input part 4 to the starting part 5 diminished.

The pendulum rocker damper 6 has a first flange area 7 on, the rotation with the input part 4 connected is. In particular, the friction lining is 19 in this embodiment, directly on the first flange area 7 attached, namely riveted. The first flange area 7 is formed substantially annular disk-shaped. In addition, the pendulum rocker damper 6 a second flange area 8th on that with the output part 5 rotatably connected. The second flange area 8th is like the first flange area 7 coaxial with and rotatable about the axis of rotation 2 arranged. The two flange areas 7 and 8th are in principle rotationally coupled to each other / rotationally connected, but in a limited angular range in a rotational direction about the axis of rotation 2 rotatable relative to each other.

The two flange areas 7 and 8th are about two intermediate parts 11a . 11b motion coupled / rotationally coupled. The two intermediate parts 11a . 11b are essentially designed as identical parts and relative to each other in a radial direction of the axis of rotation 2 slidably arranged. The two intermediate parts 11a . 11b are about 180 ° in the direction of rotation about the axis of rotation 2 offset relative to each other. Each (first and second) intermediate part 11a and 11b is in the same way with the respective first flange area 7 and the second flange portion 8th about a backdrop device 9 . 10 motion-coupled.

The first set of scenery 9 serves as the first flange area 7 with the respective intermediate part 11a and 11b coupling device. The first set of scenery 9 is in 1 on the part of two first slide tracks 21 that in the intermediate part 11a . 11b are introduced, and two roller body 22 , each in one of the first slide tracks 21 are recorded slidably recognized. The first slide tracks 21 associated roll body 22 the first set of scenery 9 are also in the first flange area 7 added.

The second setting device 10 that the intermediate part 11a . 11b with the second flange area 8th movably coupled, is in 1 from a second slide track 23 that in the second flange area 8th is introduced, shown. Another reel body 22 is in the second slide track 23 slidably received. This reel body 22 is at the same time in one in the intermediate part 11a . 11b introduced third slide track 24 slidably received. Thus, the intermediate parts 11a . 11b so on the gate devices 9 . 10 with the flange areas 7 . 8th coupled, that in operation at a relative rotation of the flange portions 7 . 8th to each other to a relative movement / displacement of the intermediate parts 11a . 11b according to the execution of the slide tracks 21 . 23 . 24 comes in a circumferential direction as well as in the radial direction. In particular, the intermediate parts 11a . 11b in a relative rotation of the flange areas 7 . 8th in a first (relative) rotational direction in sections (in a first relative direction of movement) in the radial direction inwards and thus towards each other and in a first rotational direction opposite second relative rotational direction in sections (in the first direction of movement opposite second relative direction of movement) in the radial direction outside and thus moved away from each other.

On the intermediate parts 11a . 11b acts a spring unit 12 one. The spring unit 12 is (in the radial direction) between the intermediate parts 11a . 11b clamped so that they have a shift of the intermediate parts 11a . 11b inhibits relative to each other in the first direction of movement and supported in the second direction of movement. The spring unit 12 has in this embodiment two spring elements 14 on, with the sake of clarity in 1 only one of the two spring elements 14 is illustrated. The execution of both spring elements 14 is in the 2 and 3 continue to recognize. Thus, a total of two spring elements 14 between the intermediate parts 11a . 11b clamped to the intermediate parts 11a . 11b in the radial direction to bias outward. The two spring elements 14 are the same and equal to the intermediate parts 11a . 11b added. Only in terms of their position, the spring elements differ 14 , So are the two spring elements 14 to opposite sides with respect to the axis of rotation 2 arranged. The respective spring element 14 is implemented as a helical compression spring. The helical compression spring 14 extends along a longitudinal axis 25 , which runs in the circumferential direction and in the radial direction, straight.

According to the invention is now in the spring unit 12 , namely per spring element 14 a friction device 13 intended. Thus, in the spring unit 12 a total of two friction devices 13 intended. The respective friction device 13 is in 1 by eliminating one of the two spring elements 14 to recognize particularly well in perspective view. The friction device 13 Acts in principle on the relative movement of the intermediate parts 11a . 11b a, that they are in a first relative range of motion / displacement / displacement portion of the intermediate parts 11a . 11b generates a higher frictional force than in an axially offset / adjacent to the first relative range of motion / adjoining second relative range of motion / displacement / displacement portion of the intermediate portions 11a . 11b , Be the intermediate parts 11a . 11b , as in 2 to detect, moved towards each other in the radial direction and moves in the first range of motion, a higher frictional force is generated than in the second range of motion, in which the intermediate parts 11a . 11b compared to 2 are moved further away from each other in the radial direction.

In the first embodiment, the friction device 13 radially within the spring element 14 (ie radially within a longitudinal axis 25 of the spring element 14 ) arranged. The friction device 13 consists of two friction elements 15 . 16 , A first friction element 15 , like the 2 and 3 is particularly well recognized, is designed as a pin. The first friction element 15 is thus implemented pin-shaped / peg-shaped. The first friction element 15 is essentially rigid. The first friction element 15 is in this embodiment on the first intermediate part 11a attached / firmly attached. The first friction element 15 extends from the first intermediate part 11a out to the second intermediate part 11b out. A second friction element 16 the friction device 13 is at the second intermediate part 11b attached / firmly attached. The second friction element 16 extends from the second intermediate part 11b out to the first intermediate part 11a out. The second friction element 16 , as in 1 can be seen, is generally sleeve-shaped / implemented as a sleeve. The second friction element 16 is also (in relation to the longitudinal axis 25 ) radially within the spring element 14 but radially outside the first friction element 15 arranged.

The second friction element 16 has several axial slots 26 on. As a result, the second friction element forms 16 several in the radial direction with respect to the longitudinal axis 25 deformable friction arms 17 out. The reibarme 17 act in the first relative range of motion of the intermediate parts 11a . 11b to each other directly with the first friction element 15 together. For this purpose there are the reibarme 17 in the relative range of motion of the intermediate parts 11a . 11b in frictional contact with a side surface 18 (Radial outer surface) of the first friction element 15 ,

The first friction element 15 is in principle designed so that it during the relative movement of the intermediate parts 11a . 11b in the radial direction towards each other, ie in the first direction of movement and in the first range of motion to a steady increase in the frictional force between the friction elements 15 . 16 is generated comes. On the one hand, this is due to the second intermediate part 11b tapered side surface 18 of the first friction element 15 on the other hand, on the formation of the friction mixture 17 , The reibarme 17 are resiliently biased inwardly in the radial direction and are thus biased inward in the radial direction on the side surface 18 at. With increasing movement of the intermediate parts 11a . 11b in the first direction of movement toward each other, the pressing force of the friction arms decreases 17 on the first friction element 15 to, so in turn, the friction increases accordingly.

Furthermore, as not shown here for the sake of clarity, the first friction element has 15 seen in the axial direction different longitudinal areas, which has a different coefficient of friction. The different friction coefficient is formed by different materials / Materialbeschaffenheiten. Thus, the first friction element 15 in the axial direction with respect to the longitudinal axis 25 formed with several longitudinal areas of different materials. For this purpose, for example, a first longitudinal region of the first friction element 15 formed with a first material and a second longitudinal region of the first friction element 15 is formed with a second material. The materials are, for example, plastic materials, such as polyamide, which is preferably reinforced with fibers. Alternatively or additionally, metal materials, such as steel, may also be used as materials.

Be the intermediate parts 11a . 11b considering the 2 moved away from each other in the radial direction, ie in the second direction of movement moves relative to each other, it comes to a spacing of the friction elements 15 . 16 , Thus, the friction device 13 in the second movement region adjoining the first movement region, along the relative displacement path of the intermediate parts 11a . 11b seen, deactivated and there will be no (direct) frictional force between the friction elements 15 . 16 generated.

In conjunction with the 4 and 5 is illustrated a further second embodiment, wherein in the two 4 and 5 For the sake of clarity, again only one area of the pendulum rocker damper 6 as already in the 2 and 3 , is shown. The rest of the structure and the operation of the clutch disc 1 that with this pendulum rocker damper 6 of the second embodiment, correspond to the clutch disc 1 of the first embodiment.

It is in 4 shown that the respective friction device 13 is implemented differently than in the first embodiment. Now both are the first friction element 15 as well as the second friction element 16 sleeve-shaped. The first friction element 15 is realized as a rigid (non-deformable in the radial direction) sleeve. The second friction element 16 surrounds the first friction element 15 again radially from the outside and lies on the side surface 18 of the first friction element 15 in the first relative range of movement of the intermediate parts 10a . 10b at. The two friction elements 15 . 16 are also radially outside of the spring element 14 arranged. The first friction element 15 and the second friction element 16 are therefore still, as already in the 1 to 3 , coaxial with the longitudinal axis 25 arranged, however, extend in the radial direction from the outside to the spring element 14 around. The side surface 18 of the first friction element 15 tapers along its extension in the axial direction continues to the second intermediate part 11b out.

In other words, shift in a torsion damper of the type swing rocker damper 6 the two intermediate elements (intermediate parts 11a . 11b) against each other in one direction (axial direction with respect to the spring elements 14 ) and actuate the intermediate compression springs (spring elements 14 ) parallel. This relative axial movement is used to generate frictional force or hysteresis. By a suitable form of the friction elements 15 . 16 the frictional force or the hysteresis is designed as a function of the angle of rotation. The design of the friction point is dependent on the installation space. A friction point around / outside or in / inside the compression spring 14 is in some cases with respect to the volume of the torsion damper 6 advantageous.

Thus, according to the invention is a torsional vibration damper 6 of the type swing rocker damper implemented so that two opposing intermediate elements 11a . 11b the intermediate compression springs 14 operate in parallel, one with a first intermediate element 11a connected first element (first friction element 15 ) against one with the other second intermediate element 11b connected resilient second element (second friction element 16 ) rubs.

According to an advantageous aspect, by the relative movement of the two intermediate elements 11a . 11b the resilient element 16 relative to the first element 15 elastically deformed. Due to the radial excess between the elements 15 . 16 occurs a certain frictional force between the two elements 15 . 16 on. According to a further advantageous aspect, the shape of the first element 15 designed so that after the axial position change of the intermediate elements 11a . 11b to each other or after a change in the angle of rotation of the pendulum rocker damper 6 the first element 15 the second element 16 deformed with a certain excess and so a certain frictional force or hysteresis occurs. According to a further advantageous aspect, the shape of the first element 15 designed so that the hysteresis after the axial position change of the intermediate elements 11a . 11b to each other or after a change in the angle of rotation of the pendulum rocker damper 6 can be turned off by the two elements 15 . 16 are no longer in contact. According to a further advantageous aspect, the first element consists 15 Of steel and / or plastic of the type polyamide with admixture of carbon fiber, Teflon or graphite. According to a further advantageous aspect, the first element 15 an assembly of two or more parts (longitudinal areas) made of different materials. Due to the different coefficients of friction (of the different longitudinal areas), the frictional force or the hysteresis is designed as a function of the angle of rotation. According to a further advantageous aspect, the elements 15 . 16 in the compression spring 14 arranged. According to a further advantageous aspect, the elements 15 . 16 around the compression spring 14 arranged.

LIST OF REFERENCE NUMBERS

1

clutch disc

2

axis of rotation

3

friction lining

4

introductory

5

Ausgansteil

6

Pendulum Seesaw damper

7

first flange area

8th

second flange area

9

first setting device

10

second setting device

11a

first intermediate part

11b

second intermediate part

12

spring unit

13

friction device

14

spring element

15

first friction element

16

second friction element

17

low-friction

18

side surface

19

friction lining

20

hub

21

first slide track

22

roller body

23

second slide track

24

third slide track

25

longitudinal axis

26

slot

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 102015211899 A1 [0002]
• EP 1602854 A2 [0003]

Claims (10)

Clutch disc (1) for a friction clutch of a motor vehicle, having an input part (4) which can rotate about an axis of rotation (2), a friction lining (3), an output part (5) likewise rotatable about the rotation axis (2) and an input part (4) to the output part (5) coupling pendulum rocker damper (6), wherein the pendulum rocker damper (6) further connected to the input part (4) first flange (7), one in a limited angular range relative to the first flange (7) about the axis of rotation (2) rotatable, with the output part (5) connected to the second flange portion (8) and two each via a link device (9, 10) with the two flange portions (7, 8) motion-coupled intermediate parts (11a, 11b), and wherein a Spring unit (12) in such a way with the link devices (9, 10) cooperates, that in a relative rotation of the flange (7, 8) to each other by a relative movement of the intermediate parts (11a, 11b) to each other the spring unit (12) is inhibited, characterized in that a friction device (13) is arranged inside or outside a spring element (14) of the spring unit (12) and acts by the friction device (13) in a first relative movement range of the intermediate parts (11a, 11b) a higher relative to the relative movement of the intermediate parts (11a, 11b) inhibiting frictional force is generated as in a to the first movement range offset second relative movement range of the intermediate parts (11a, 11b). Clutch disc (1) after Claim 1 , characterized in that between a first intermediate part (11 a) and a second intermediate part (11 b) clamped spring element (14) is designed as a helical compression spring. Clutch disc (1) after Claim 1 or 2 , characterized in that the friction device (13) to a radial outer side of the spring element (14), with respect to a longitudinal extent of the spring element (14), or to a radial inner side of the spring element (14), with respect to the longitudinal extent of the spring element ( 14) is arranged. Clutch disc (1) according to one of Claims 1 to 3 characterized in that the friction means (13) comprises a first friction member (15) fixed to the first intermediate member (11a) and a first intermediate member (11a, 11b) fixed to the second intermediate member (11b) with the first friction member (15) friction frictionally cooperating, second friction element (16). Clutch disc (1) after Claim 4 characterized in that the first friction member (15) is formed rigidly in a transverse direction of the spring member (14) and the second friction member (16) is deformable relative to the first friction member (15) in the transverse direction of the spring member (14). Clutch disc (1) after Claim 4 or 5 , characterized in that the second friction element (16) at least one in the transverse direction of the spring element (14) deformable friction arm (17), in the first relative movement range of the intermediate parts (11a, 11b) on a side surface (18) of the first friction element (15) is present. Clutch disc (1) after Claim 6 , characterized in that the side surface (18) of the first friction element (15) tapers in diameter towards the second intermediate part (11b). Clutch disc (1) according to one of Claims 4 to 7 , characterized in that the second friction element (16) is designed as a pin or a sleeve. Clutch disc (1) according to one of Claims 4 to 8th , characterized in that the friction elements (15, 16) are matched to one another in such a way that they are arranged at a distance from each other in the second relative movement range of the intermediate parts (11a, 11b). Friction clutch for a drive train of a motor vehicle, with a pressure plate and a frictional engagement with the pressure plate connectable clutch disc (1) according to one of Claims 1 to 9 ,

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