Centrifugal pendulum device with a disc spring to generate frictional resistance; clutch disc and drive train

DE502019013505D1Active Publication Date: 2025-07-10SCHAEFFLER TECHNOLOGIES AG & CO KG
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Patent Information

Application Number
DE502019013505
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Priority Date
2018-03-13
Filing Date
2019-02-12
Publication Date
2025-07-10
Estimated Expiration
2039-02-12

AI Technical Summary

Technical Problem

Existing centrifugal pendulum devices suffer from complex manufacturing of spring washers that unevenly distribute contact force, leading to increased wear on contact elements due to high local surface pressure.

Method used

Designing the spring washer as a disc spring with multiple spring tongues to evenly distribute contact pressure and reduce surface pressure, ensuring a compact and durable centrifugal pendulum device.

Benefits of technology

The disc spring design provides consistent frictional resistance, reduces wear, and minimizes installation space while maintaining durability by evenly distributing force across the contact element.

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Description

[0001] The invention relates to a centrifugal pendulum device (also abbreviated to centrifugal pendulum) for a drive train of a motor vehicle, such as a car, truck, bus or other commercial vehicle, with a carrier rotatable about an axis of rotation, a pendulum mass mounted on the carrier so as to be able to pendulum along a slide track, wherein the pendulum mass generates a restoring moment counteracting rotational irregularity during operation, a contact element lying on the pendulum mass, which contact element is used (directly or indirectly) to generate a frictional resistance inhibiting a relative movement between the pendulum mass and the carrier, and a spring washer preloading the contact element in an axial direction of the axis of rotation towards the pendulum mass.Furthermore, the invention relates to a clutch disc for a friction clutch of a motor vehicle and a drive train for a motor vehicle, each comprising a centrifugal pendulum device.

[0002] A basic structure of a centrifugal pendulum device is disclosed, for example, in DE 10 2013 203 694 A1.

[0003] WO 2015 / 192 846 A1 discloses a centrifugal pendulum device which can be read from the preamble of claim 1, wherein pendulums suspended in a pendulum flange in the centrifugal force field of a rotating pendulum flange are axially prestressed relative to the pendulum flange in order to prevent hard impacts of the pendulums on the pendulum flange.

[0004] Furthermore, the older, but not pre-published WO 2018 / 161 992 A1 discloses bending springs which are designed as corrugated washers.

[0005] However, it has been discovered that the prior art designs have a disadvantage: the spring washers used to press the corresponding contact elements onto the pendulum masses are relatively complex to manufacture. Furthermore, the spring washers are shaped and supported on the contact element in such a way that the contact force is distributed relatively unevenly across the circumference. The spring washer often applies its force to the contact element with only one force application tongue, resulting in a relatively high local surface pressure on the contact element. This can lead to increased wear on the contact element.

[0006] It is therefore an object of the present invention to eliminate the disadvantages known from the prior art and in particular to provide a centrifugal pendulum device with reduced wear.

[0007] This object is achieved according to the invention by a centrifugal pendulum device according to claim 1, wherein the spring washer is designed as a disc spring equipped with several spring tongues.

[0008] The spring tongues provide a more evenly distributed contact pressure on the contact element in the circumferential direction. This improves the force distribution on the contact element and reduces the maximum surface pressure. The result is a frictional resistance that acts as evenly as possible on the pendulum masses. This significantly increases the durability of the centrifugal pendulum device. Furthermore, the disc spring is designed to be particularly compact in the axial direction, ensuring that the centrifugal pendulum device is also compact in its entirety.

[0009] Further advantageous embodiments are claimed in the subclaims and explained in more detail below.

[0010] According to the invention, the disc spring rests against the contact element with several spring tongues in a circumferential region of the pendulum mass. This creates as consistent a friction as possible for each pendulum mass. In this context, it is particularly expedient if several, preferably three, pendulum masses are distributed in a circumferential direction of the rotation axis, and if several spring tongues of the disc spring are pressed / supported / rest against the contact element (in the circumferential region of the respective pendulum mass) for each pendulum mass.

[0011] If the disc spring is arranged between a first support region of the support and the pendulum mass, viewed in the axial direction of the axis of rotation, the disc spring is arranged in a particularly compact / space-saving manner. In other words, the disc spring is thus partially arranged (preferably at least with its spring tongues) in an (axial) gap between the first support region and the respective pendulum mass / the contact element resting against the pendulum mass. The disc spring further preferably projects with its spring tongues in a radial direction from the inside (to the outside) into this (axial gap). This further reduces the installation space requirement.

[0012] For an even more uniform pressure on the contact element by the pendulum mass, it is also beneficial if the spring tongues (assigned to the respective pendulum mass) are at least partially designed differently in their width and / or length.

[0013] If the contact element is inserted directly axially between several spring tongues of the disc spring and the pendulum mass, the structure is further simplified.

[0014] It is also advantageous if the contact element is designed directly as a friction element. This keeps the design particularly simple.

[0015] Preferably, the friction element with the disc spring is arranged coaxially with the rotational axis. The friction element is preferably annular, i.e., implemented as a friction ring. The friction component is also preferably configured as a friction ring / ring-shaped and / or arranged coaxially with the rotational axis.

[0016] It is further advantageous if the contact element has a plurality of retaining lugs projecting in the axial direction, which are supported / received on the carrier while ensuring a rotationally fixed arrangement of the contact element relative to the carrier. This further facilitates the reception of the contact element.

[0017] The contact element is made of either a metal sheet or a plastic material.

[0018] It is also advantageous to have a friction component operatively connected to the contact element attached to the pendulum mass and resting against a second support area of ​​the support. This allows the friction on the part of the pendulum mass to be distributed even more evenly.

[0019] In this regard, it is expedient if the contact element is implemented as a support element and interacts with the friction component, which directly generates the frictional resistance between the pendulum mass and the carrier during operation.

[0020] Alternatively, it is also advantageous if the additional friction component operatively connected to the contact element, like the contact element, is designed as a friction element, preferably as an annular friction element, i.e., as a friction ring. The friction component is preferably inserted / arranged on an axial side of the pendulum mass facing away from the contact element (between the support and the pendulum mass). This also ensures that the friction is generated as evenly as possible.

[0021] If the disc spring has retaining tabs that are supported / received on a component fixed to the carrier while the disc spring is arranged in a rotationally fixed manner relative to the carrier, the disc spring is held stable during operation.

[0022] Furthermore, the invention relates to a clutch disc for a friction clutch of a motor vehicle, which is directly equipped with the centrifugal pendulum device according to the invention according to at least one of the previously described embodiments and a friction element that is rotationally fixedly connected to the carrier of the centrifugal pendulum device. In this context, the centrifugal pendulum device is preferably rotationally fixedly connected to a hub or a flange of the clutch disc.

[0023] The invention also relates to a drive train for a motor vehicle, comprising this centrifugal pendulum device according to the invention according to at least one of the previously described embodiments, wherein the carrier of the centrifugal pendulum device is connected in a rotationally fixed manner to a drive shaft. The drive shaft is further preferably an output shaft of an internal combustion engine or a transmission input shaft of a transmission.

[0024] In other words, according to the invention, a clutch disc with a centrifugal pendulum absorber is designed, comprising a disc spring for acting on a friction device (at least comprising a contact element). According to the invention, an assembly comprising a clutch disc and a centrifugal pendulum absorber is therefore proposed, wherein the centrifugal pendulum absorber is fastened to the clutch disc or is arranged in the axial direction within the installation space of the clutch and is connected in a rotationally fixed manner to the clutch disc via the transmission input shaft, wherein a disc spring with several disc spring tongues distributed in the circumferential direction and plastic areas / elements (contact element and / or friction component) acted upon by these tongues is provided as friction devices for reducing the oscillation angle of the pendulum mass. Since several disc spring tongues are provided per pendulum mass, the surface pressures can be reduced, thereby reducing wear.At the same time, a reduction in the axial installation space is possible, since the disc spring can also be arranged on only one side of the pendulum mass.

[0025] The invention will now be explained in more detail below with reference to figures in which various embodiments are shown.

[0026] They show: Fig. 1 is a front view of a centrifugal pendulum device according to the invention, partially cut in cross section, according to a first embodiment, wherein the basic structure of the centrifugal pendulum device can be seen from the side of several pendulum masses in a carrier, Fig. 2 is a longitudinal sectional view of the centrifugal pendulum device according to Fig. 1 along the Fig. 1section line marked "II-II", where a contact element and a friction component, which are pressed axially against the pendulum mass by a disc spring, can be seen, Fig. 3 a perspective exploded view of the centrifugal pendulum device according to Fig. 1 , Fig. 4 a longitudinal section of the centrifugal pendulum device similar to Fig. 2 , whereby for the sake of clarity only the sectional surfaces are illustrated, Fig. 5 a longitudinal section of the centrifugal pendulum device along the Fig. 1 with "VV" marked cutting line, where a torsion-proof arrangement of the disc spring on the carrier can be seen, Fig. 6 a perspective view of the Figs. 1 to 5 inserted contact element from an axial side facing the disc spring, Fig. 7 a front view of the contact element according to Fig. 6 , Fig. 8 a longitudinal section of the contact element along the Fig. 7section line marked "VIII-VIII", Fig. 9 a front view of the Figs. 1 to 5 inserted disc spring, Fig. 10 a side view of the disc spring after Fig. 9 , Fig. 11 a perspective view of the disc spring, Fig. 12 a perspective view of the Figs. 1 to 5 inserted friction component cooperating with the contact element, Fig. 13 a longitudinal sectional view of a centrifugal pendulum device according to the invention according to a further second embodiment, in which the contact element no longer serves as a friction element itself, but as a support element, wherein for the sake of clarity only the cut surfaces of the cut components are shown, Fig. 14 a perspective view of the in Fig. 13 as a support element implemented contact element, Fig. 15 a front view of a centrifugal pendulum device according to the invention of the Figs. 1 to 5having clutch disc, and Fig. 16 a side view of the clutch disc according to Fig. 15 .

[0027] The figures are merely schematic in nature and serve exclusively to facilitate understanding of the invention. The same elements are provided with the same reference numerals. Furthermore, the various features of the different embodiments can be freely combined with one another.

[0028] In the Figs. 1 to 3 A basic structure of the centrifugal pendulum device 1 according to the invention according to a first embodiment can be seen. The centrifugal pendulum device 1 is preferably a component of a Figs. 15 and 16illustrated clutch disc 20 of a clutch in the form of a friction clutch. The centrifugal pendulum device 1 is rotationally fixedly connected to a hub 27 of the clutch disc 20. The hub 27 is further rotationally fixedly connected to a friction element 28 of the clutch disc 20. According to further embodiments, the centrifugal pendulum device 1 can also be rotationally fixedly connected to a flange / flange region of the clutch disc 20. The clutch, not shown further for the sake of clarity, is typically used in a drive train of a motor vehicle, namely between an output shaft of an internal combustion engine and an input shaft of a transmission. The centrifugal pendulum device 1 is therefore part of the drive train of the motor vehicle during operation.Alternatively, according to further embodiments, the centrifugal pendulum device 1 is also mounted in a rotationally fixed manner directly on a drive shaft of the drive train, such as the output shaft of the internal combustion engine or the transmission input shaft. During operation, the centrifugal pendulum device 1 typically serves to compensate for rotational irregularities in the drive train, in particular those generated by the internal combustion engine. For this purpose, the centrifugal pendulum device 1 has the basic structure known from DE 10 2014 211 711 A1.

[0029] The centrifugal pendulum device 1 has Fig. 2a carrier 3, which is also referred to as a pendulum flange / carrier flange. The carrier 3 is constructed from two carrier regions 9a, 9b held spaced apart from one another in the axial direction. The two carrier regions 9a and 9b are each referred to as a pendulum flange / flange region. Each carrier region 9a and 9b is essentially disc-shaped. The carrier 3 is arranged to be rotatable about an axis of rotation 2. During operation, the axis of rotation 2 is preferably arranged coaxially with the output shaft of the internal combustion engine / transmission input shaft. The two carrier regions 9a and 9b are connected to one another in a rotationally fixed manner via spacer bolts 14. The spacer bolts 14 also determine an axial distance (along the axis of rotation 2) between the two carrier regions 9a and 9b relative to one another. In the circumferential direction of the carrier 3 (with respect to the axis of rotation 2), a plurality of spacer bolts 14 are arranged distributed ( Fig. 1). The spacer bolts 14 are riveted in the respective support area 9a, 9b, ie they are connected to the support area 9a, 9b in a force-locking and form-locking manner.

[0030] In the (axial) interior space 15 of the support 3 formed by the support areas 9a, 9b, several (three) pendulum masses 5 are arranged distributed in the circumferential direction so as to be movable / pendulum-like relative to the support 3. As shown in the view according to Fig. 1 to a front side of the centrifugal pendulum device 1, each pendulum mass 5 has two guide pins 16, which each protrude into the guide tracks 4 of the support 3. For each guide pin 16 of a pendulum mass 5, both the first support area 9a and the second support area 9b have a guide track 4 (in Fig. 1 and Fig. 15shown representatively for the first support area 9a). The guide tracks 4 of the two support areas 9a, 9b assigned to a guide pin 16 each form a guide track for this guide pin 16. The guide tracks 4 extend in a curved manner when viewed in the circumferential direction (i.e., both in the circumferential direction and in the radial direction). In particular, the guide tracks 4 each extend in a U-shape in the circumferential direction. Thus, during operation, the pendulum mass 5 performs a pendulum movement in the usual way when rotational irregularity occurs, which pendulum movement generates a restoring moment directed counter to the rotational irregularity.

[0031] Between the respective pendulum mass 5 and the carrier 3 acts a friction device 18, as shown in the Fig. 2 and 4clearly visible. The friction device 18 has a contact element 6. The contact element 6 is basically inserted in such a way that during a relative movement between the pendulum mass 5 and the carrier 3, ie during a pendulum movement of the pendulum mass 5 during operation along the guide tracks 4, a frictional resistance is generated which inhibits the movement.

[0032] In the first embodiment, as shown in Fig. 4 As can be seen, the contact element 6 is designed directly as a friction element 10. The contact element 6 is designed as a whole in the shape of a ring ( Fig. 6 and 7). The contact element 6 lies directly against an axial end face of each pendulum mass 5. The contact element 6, with its surface resting against the respective pendulum mass 5, is specifically designed to create a frictional resistance / frictional contact with the pendulum mass 5. The pendulum mass 5 is displaceable relative to the contact element 6 in the circumferential direction and in the radial direction of the rotation axis 2 due to its guidance by the slide tracks 4. This results in the generation of a frictional force during operation.

[0033] For the rotationally fixed support of the contact element 6 relative to the carrier 3, the contact element 6 has, on a side axially remote from the pendulum mass 5, a plurality of axially projecting retaining lugs 11 in the form of projections ( Fig. 8 ). These retaining lugs 11 project into windows 23 / recesses in the first support area 9a and are secured therein by means of positive locking in the circumferential direction / direction of rotation.

[0034] The contact element 6 is pressed axially against the pendulum mass 5 by means of a spring washer designed as a disc spring 7. The disc spring 7, which is also used in conjunction with the Figs. 9 to 11illustrated alone, basically has an annular base section / ring section 17 from which several spring tongues 8 protrude outwards in the radial direction. For each pendulum mass 5, several spring tongues 8 are provided on the disc spring 7, which differ in terms of their length (extension in the radial direction) and width (extension in the circumferential direction). In total, a group 19a to 19c of spring tongues 8 is provided on the disc spring 7 for each pendulum mass 5. A first group 19a is arranged offset in the circumferential direction from a second group 19b and a third group 19c. Due to the design of the various groups 19a to 19c of spring tongues 8, a group 19a to 19c is assigned to each pendulum mass 5 during operation, by means of which group the contact element 6 is pressed against this pendulum mass 5.

[0035] Each spring tongue 8 engages in a corresponding recess 21 of the contact element 6, which is open at the front. The recesses 21 are in the Figures 6 and 7 clearly visible and arranged on a side of the contact element 6 axially remote from the pendulum masses 5. As a result, the disc spring 7 is also supported in a rotationally fixed manner relative to the contact element 6.

[0036] The disc spring 7 is directly in the axial direction, such as in Fig. 4 As can be clearly seen, it is arranged axially between the contact element 6 and the first support region 9a. For this purpose, an (axial) gap 22 is provided between the contact element 6 and the first support region 9a, into which the disc spring 7 partially projects, namely with its spring tongues 8, from a radial inner side.

[0037] Combined with Fig. 5It can also be seen that the disc spring 7 is also arranged so as to be secured against rotation relative to the carrier 3. For this purpose, the disc spring 7 has retaining tabs 13. The retaining tabs 13 extend both in the radial direction and in the axial direction away from the annular section 17 and also protrude into windows 23 of the carrier 3. This results in a positive-locking anti-rotational lock of the disc spring 7 relative to the carrier 3 with respect to the axis of rotation 2. The retaining tabs 13 are arranged between the respective groups 19a to 19c of the spring tongues 8, viewed in the circumferential direction. Two retaining tabs 13 are formed between each group 19a to 19c.

[0038] In addition, the friction device 18 in this embodiment has a friction component 12. The friction component 12 is essentially shaped like a cap and snapped onto the pendulum mass 5. This means that the friction component 12 is firmly attached to the pendulum mass 5 in a form-fitting manner. The friction component 12 is in Fig. 12can be clearly seen on its own. The friction component 12 surrounds the pendulum mass 5 from its side axially facing away from the contact element 6 / the disc spring 7 as well as its radial inner side. In addition, the friction component 12 in this embodiment is preferably also supported in the axial direction on the contact element 6. The friction component 12 therefore has a first friction region 24 extending in the radial direction, which is clamped axially between the second support region 9b and the pendulum mass 5. A second friction region 25 of the friction component 12 extends in the axial direction away from the first friction region 24 towards the contact element 6. The second friction region 25 is supported on the radial inner side of the pendulum mass 5. In addition, the second friction region 25 is in frictionally force-locking contact with the contact element 6 with its side axially facing away from the first friction region 24.

[0039] Due to the preload of the contact element 6 away from the first support area 9a toward the pendulum mass 5, the friction component 12 is clamped between the pendulum mass 5 and the second support area 9b. This also results in a defined frictional contact between the friction device 18 and the support 3 on the part of the friction component 12 during operation. Since the friction component 12 is firmly connected to the pendulum mass 5, frictional contact also occurs between the contact element 6 and the friction component 12 during operation.

[0040] In this embodiment, the contact element 6 is preferably made of a plastic material.

[0041] In the Figs. 13 and 14A second embodiment of the centrifugal pendulum device 1 according to the invention is illustrated, wherein this second embodiment largely corresponds to the first embodiment in terms of structure and function. For the sake of brevity, only the essential differences between the second embodiment and the first embodiment are described below.

[0042] In this embodiment, the contact element 6 is designed as a support element 26. The contact element 6 preferably serves only to axially press the pendulum mass 5 together with the friction component 12 against the second support region 9b. In this embodiment, the support element 26 is formed from a metal sheet.

[0043] In a further exemplary embodiment, which is not shown in detail here for the sake of clarity, it is also possible in principle to use two contact elements 6 designed according to the contact element 6 of the first exemplary embodiment in the centrifugal pendulum device 1, wherein a first contact element 6 is arranged according to the contact element 6 of the first exemplary embodiment and a second contact element 6 is then arranged on a second axial side of the pendulum mass 5 (between the second carrier region 9b and the pendulum mass 5) axially facing away from the first contact element 6. Both contact elements 6 are then again preferably secured in a rotationally fixed manner relative to the carrier 3.

[0044] In other words, according to the invention, a disc spring 7 is used as the power source for a friction device 18. Since the spring force is distributed across multiple force introduction tongues (spring tongues 8) per pendulum mass 5, the surface pressure is significantly reduced compared to the prior art. Furthermore, a system with a single-sided spring 7 offers an advantage in terms of axial installation space with a fixed distance between two centrifugal pendulum flanges (support areas 9a, 9b), since only one spring 7 is installed.

[0045] According to the invention, a centrifugal pendulum 1 is realized with a friction device 18, wherein a disc spring 7 exerts a force from the carrier 3 onto a friction element or contact element 6, preferably made of plastic, which is arranged between the pendulum mass 5 and the disc spring 7, wherein the friction element 6 is fixed to the carrier, so that when the pendulum masses 5 move relative to the carrier 3, a constant friction force is generated against the direction of movement. The disc spring 7 is arranged on the (axial) side of the pendulum mass 5, on which the centrifugal pendulum 1 has an axial gap 22 between two carriers (carrier regions 9a, 9b). The disc spring 7 protrudes partially radially into the gap 2. An annular friction ring (friction element 10), preferably made of plastic, is preferably arranged fixed to the carrier between the disc spring 7 and the pendulum mass 5.On the side of the pendulum mass 5 facing away from the disc spring 7 (axial), a second friction element (friction component 12) is arranged, which is attached to the pendulum mass 5 and partially encloses it. The disc spring 7 has axially projecting elements (retaining tabs 13) that can be hooked into the flange (first support area 9a) and can be used for positioning and force transmission. The disc spring 7 has more than one force introduction tongue (spring tongue 8) per pendulum mass 5. The disc spring 7 further preferably has force introduction tongues 8 of different lengths. The friction ring 10 also preferably has axially projecting elements (retaining lugs 11) that are hooked into the flange 9a and are used for positioning and force transmission. The friction ring 6 is further preferably made of sheet metal.

[0046] In particular, the following three preferred embodiments of the centrifugal pendulum device 1 are essentially implemented. Version 1:

[0047] The friction device 18 in the centrifugal pendulum 1 has the function of reducing the high oscillation angle of the pendulum mass 5. A disc spring 7 is used here as the energy storage / power source. The disc spring 7 is arranged between the pendulum mass 5 and the flatter of the two flanges (first support area 9a (smaller axial extension than the second support area 9b)) and projects radially inward into the gap 22 between the two flanges 9a, 9b. It is advisable to use this space to achieve a spring characteristic curve that is optimal for the function. The disc spring 7 has several outer tongues 8, 13. The more strongly curved outer tongues 13 have the function of centering the disc spring 7 in the centrifugal pendulum 1, positioning the disc spring 7 during centrifugal pendulum assembly and transmitting force in the circumferential direction to the flange 9a. The only slightly bent tongues 8 transfer the spring force via the friction ring 6, 10 to the individual pendulum mass 5.The force-bearing tongues 8 have different lengths and widths. The geometry of the force-bearing tongues 8 is selected to ensure a uniform distribution of the surface pressure in all extreme positions of the pendulum mass 5, i.e., in the center and at full deflection.

[0048] The friction ring 6, 10 has axially projecting elements 11 for positioning in the flange 94. On the side of the pendulum mass 5 facing away from the disc spring 7, another friction element 12 is located, one for each pendulum mass 5. This element rests on the potted flange (second support area 9b). The second friction element 12 is firmly mounted on the pendulum mass 5. Version 2:

[0049] Another conceivable variant would be that the friction ring 6 is made of sheet metal or is designed as a support disc (support element 26). Version 3:

[0050] Another conceivable variant would be that an annular friction ring 6, 10 is arranged on both sides of the pendulum mass 5. List of reference symbols

[0051] 1 Centrifugal pendulum device 2 Rotation axis 3 Carrier 4 Slide track 5 Pendulum mass 6 Contact element 7 Disc spring 8 Spring tongue 9 a First carrier area 9 b Second carrier area 10 Friction element 11 Retaining lug 12 Friction component 13 Retaining tab 14 Spacer bolt 15 Interior 16 Guide bolt 17 Ring section 18 Friction device 19 a First group of spring tongues 19 b Second group of spring tongues 19 c Third group of spring tongues 20 Clutch disc 21 Recess 22 Gap 23 Window 24 First friction area 25 Second friction area 26 Support element 27 Hub 28 Friction element of the clutch disc

Claims

1. A centrifugal pendulum device (1) for a powertrain of a motor vehicle, having a support (3), which is rotatable about an axis of rotation (2), a pendulum mass (5), which is held on the support (3) such that it can swing along a guide path (4), wherein the pendulum mass (5) generates, during operation, a restoring torque which is directed against a rotational irregularity, a contact element (6), which bears against the pendulum mass (5), which contact element (6) is inserted to generate a frictional resistance inhibiting a relative movement between the pendulum mass (5) and the support (3), and a spring disc (7) biasing the contact element (6) in an axial direction of the axis of rotation (2) towards the pendulum mass (5), wherein the spring disc (7) is designed as a diaphragm spring (7) equipped with a plurality of spring tongues (8), characterised in that the diaphragm spring (7) bears against the contact element (6) in a circumferential region of the pendulum mass (5) with the spring tongues (8).

2. The centrifugal pendulum device (1) according to claim 1, characterised in that the diaphragm spring (7) is arranged between a first support region (9a) of the support (3) and the pendulum mass (5) as viewed in the axial direction of the axis of rotation (2).

3. The centrifugal pendulum device (1) according to claim 1 or 2, characterised in that the spring tongues (8) differ at least partially in their width and / or length.

4. The centrifugal pendulum device (1) according to any one of claims 1 to 3, characterised in that the contact element (6) is designed as a friction element (10).

5. The centrifugal pendulum device (1) according to any one of claims 1 to 4, characterised in that the contact element (6) has a plurality of retaining lugs (11) projecting in the axial direction, which are supported on the support (3) with the contact element (6) being arranged in a rotationally fixed manner relative to the support (3).

6. The centrifugal pendulum device (1) according to any one of claims 1 to 5, characterised in that a friction component (12) operatively connected to the contact element (6) is attached to the pendulum mass (5) and bears against a second support region (9b) of the support (3).

7. The centrifugal pendulum device (1) according to any one of claims 1 to 5, characterised in that the diaphragm spring (7) has retaining lugs (13) which are supported on a component (9a) fixed to the support while the diaphragm spring (7) is arranged in a rotationally fixed manner relative to the support (3).

8. A clutch plate (20) for a friction clutch of a motor vehicle, having a centrifugal pendulum device (1) according to any one of claims 1 to 7, as well as a friction element (10), which is connected to the support (3) in a non-rotatable manner.

9. A powertrain for a motor vehicle, having a centrifugal pendulum device (1) according to any one of claims 1 to 7, wherein the support (3) is connected to a drive shaft in a non-rotatable manner.