DE102022117832B3 - Pendulum rocker damper - Google Patents

Abstract

The present invention relates to a pendulum rocker damper (1) with a rotation axis (D) for a drive train of a motor vehicle, having at least the following components: - an input flange (2) for receiving a torque; - an output flange (3) for outputting a torque; - a plurality of rocker elements (4) distributed in the circumferential direction (U) of the pendulum rocker damper (1) in a torque-transmitting connection between the input flange (2) and the output flange (3); - at least one first rolling element (5) and at least one second per rocker element (4). Rolling body (6), the rocker element (4) having a first sliding track (7) for rolling the first rolling body (5) and a second sliding track (8) for rolling the second rolling body (6), the input flange (2) having a the first slide track (7) has a first counter track (9) and the output flange (3) has a second counter track (10) which is complementary to the second slide track (8), the first rolling body (5) being between the first slide track (7) and the the first counter-track (9) is guided so that it can be rolled and the second rolling element (6) is guided so that it can be rolled between the second sliding track (8) and the second counter-track (10); and - at least one energy storage element (11) which is arranged between two rocker elements (4) which are adjacent in the circumferential direction (U) and supports them in a swingable manner against one another, with a friction device (12) between the two rocker elements (4) which are adjacent in the circumferential direction (U). is provided with a positive guide (13) which absorbs the transverse forces that occur between the rocker elements (4) during operation of the pendulum rocker damper (1).

Description

The present invention relates to a pendulum rocker damper with a rotation axis for a drive train of a motor vehicle.

From the DE 10 2019 121 205 A1 a pendulum rocker damper with a rotation axis for a drive train of a motor vehicle is known. The pendulum rocker damper has an input flange for receiving a torque, an output flange for emitting a torque and a plurality of rocker elements arranged distributed in the circumferential direction of the pendulum rocker damper in a torque-transmitting connection between the input flange and the output flange. One energy storage element is arranged between two rocker elements that are adjacent in the circumferential direction and supports them so that they can swing against each other.

Each rocker element has a first rolling body and a second rolling body. Each of the rocker elements has a first link track for rolling the first rolling body and a second link track for rolling the second rolling body. The input flange has a first counter-track that is complementary to the first slide track, and the output flange has a second counter-track that is complementary to the second slide track. The first rolling body is guided in a rollable manner between the first link track and the first counter-track, and the second rolling body is guided in a rollable manner between the second link track and the second counter-track.

In particular in pendulum rocker dampers, in which each of the rocker elements is swingably mounted with only a single rolling element on the input flange and with only one further rolling element on the output flange, but also in pendulum rocker dampers with several input-side and output-side rolling elements due to manufacturing tolerances, it can prove to be disadvantageous that the rocker elements become misaligned during operation, causing the rolling elements to lose contact with the slideways. The rocker elements can hit other components of the pendulum rocker damper, which can cause annoying noises.

Furthermore, from the DE 10 2018 108 049 A1 a pendulum rocker damper is known, which can be read in the preamble of claim 1.

It is the object of the present invention to provide a pendulum rocker damper whose functionality is improved and in which, in particular, annoying noises can be prevented during operation of the motor vehicle.

• - einen Eingangsflansch zum Aufnehmen eines Drehmoments;
• - einen Ausgangsflansch zum Abgeben eines Drehmoments;
• - mehrere in Umfangsrichtung des Pendelwippendämpfers verteilt angeordnete Wippenelemente in drehmomentübertragender Verbindung zwischen dem Eingangsflansch und dem Ausgangsflansch;
• - je Wippenelement zumindest einen ersten Wälzkörper und zumindest einen zweiten Wälzkörper, wobei das Wippenelement eine erste Kulissenbahn zum Abwälzen des ersten Wälzkörpers und eine zweite Kulissenbahn zum Abwälzen des zweiten Wälzkörpers aufweist, wobei der Eingangsflansch eine zu der ersten Kulissenbahn komplementäre erste Gegenbahn und der Ausgangsflansch eine zu der zweiten Kulissenbahn komplementäre zweite Gegenbahn aufweist, wobei der erste Wälzkörper zwischen der ersten Kulissenbahn und der ersten Gegenbahn abwälzbar geführt ist und der zweite Wälzkörper zwischen der zweiten Kulissenbahn und der zweiten Gegenbahn abwälzbar geführt ist; und
• - zumindest ein Energiespeicherelement, das zwischen zwei in Umfangsrichtung benachbarten Wippenelementen angeordnet ist und diese schwingbar gegeneinander abstützt.

According to the invention, this object is achieved by a pendulum rocker damper according to claim 1, with a rotation axis for a drive train of a motor vehicle, having at least the following components:

• - an input flange for receiving a torque;
• - an output flange for outputting a torque;
• - several rocker elements distributed in the circumferential direction of the pendulum rocker damper in a torque-transmitting connection between the input flange and the output flange;
• - Each rocker element has at least one first rolling body and at least one second rolling body, the rocker element having a first sliding track for rolling the first rolling body and a second sliding track for rolling the second rolling body, the input flange having a first counter track complementary to the first sliding track and the output flange having a has a second counter-track that is complementary to the second slide track, wherein the first rolling body is guided in a rollable manner between the first slide track and the first counter-track and the second rolling body is guided in a rollable manner between the second slide track and the second counter-track; and
• - At least one energy storage element which is arranged between two rocker elements which are adjacent in the circumferential direction and supports them in a swingable manner against one another.

Since a friction device with positive guidance is also provided between the two rocker elements adjacent in the circumferential direction, which absorbs the transverse forces that occur between the rocker elements during operation of the pendulum rocker damper, the functionality of the pendulum rocker damper can be improved and disruptive noises during operation of the motor vehicle can be prevented.

Preferably, exactly one first rolling body and exactly one second rolling body are provided per rocker element, whereby the functionality can be further improved.

The friction device has a first friction point for generating a tension-side friction torque and a second friction point for generating a thrust-side friction torque, and the tension-side friction torque differs from the thrust side friction torque in terms of amount. This can also further improve the functionality of the pendulum rocker damper.

Preferably, the amount of frictional torque on the traction side is smaller than the frictional torque on the thrust side.

Furthermore, it is advantageous if one of the two friction points, preferably the first friction point, comprises a plastic/steel friction pairing, and if the other of the two friction points, preferably the second friction point, comprises a steel/steel friction pairing. This can also further improve the functionality of the pendulum rocker damper.

The respective rocker element has two rocker plates spaced apart in the axial direction of the pendulum rocker damper by spacer rivets, and the input flange and/or the output flange extends into the space between the two rocker plates. This can also further improve the functionality of the pendulum rocker damper.

The friction partner of one of the two friction points is formed by or held by at least one of the spacer rivets. This can also further improve the functionality of the pendulum rocker damper.

Preferably, a friction partner of one of the two friction points is formed by at least one of the rocker plates, preferably in the form of an angled section. This can also further improve the functionality of the pendulum rocker damper.

It is advantageous if the spacer rivet of one of the rocker elements has an arcuate section which is in contact with the rocker element adjacent in the circumferential direction to form one of the two friction points. This can also further improve the functionality of the pendulum rocker damper.

Furthermore, it is advantageous if a plastic friction element is arranged at a free end of the arcuate section or on the rocker element adjacent in the circumferential direction, preferably between the rocker plates. This can also further improve the functionality of the pendulum rocker damper.

• 1a: eine Detailansicht eines Pendelwippendämpfers aus dem Stand der Technik mit Wippenelementen in Ruhestellung,
• 1b: eine Detailansicht des Pendelwippendämpfers aus 1a mit Wippenelementen, die unter Komprimierung des dazwischen angeordneten Energiespeicherelements maximal ausgelenkt sind und dabei unter Querkrafteinfluss verkippt sind,
• 1c: eine Detailansicht des Pendelwippendämpfers aus 1a mit einer schematisch dargestellten Zwangsführung, um ein Verkippen der Wippenelemente unter Querkrafteinfluss zu verhindern,
• 2a: ein erstes Ausführungsbeispiel eines Pendelwippendämpfers mit Reibeinrichtung und Zwangsführung der Wippenelemente,
• 2b: eine perspektivische Detailansicht der Reibeinrichtung des Pendelwippendämpfers aus 2a,
• 2c: eine Schnittansicht der Reibeinrichtung des Pendelwippendämpfers aus 2a,
• 3a: ein zweites Ausführungsbeispiel eines Pendelwippendämpfers mit Reibeinrichtung und Zwangsführung der Wippenelemente,
• 3b: eine perspektivische Detailansicht der Reibeinrichtung des Pendelwippendämpfers aus 3a,
• 4: einen ersten Zusammenbauschritt des Pendelwippendämpfers aus 3a,
• 5: einen zweiten Zusammenbauschritt des Pendelwippendämpfers aus 3a,
• 6: einen dritten Zusammenbauschritt des Pendelwippendämpfers aus 3a, und
• 7: eine perspektivische Detailansicht der Reibeinrichtung eines dritten Ausführungsbeispiels eines Pendelwippendämpfers.

The present invention is explained in more detail below using preferred exemplary embodiments in conjunction with the associated figures. Show in these:

• 1a : a detailed view of a prior art pendulum rocker damper with rocker elements in the rest position,
• 1b : a detailed view of the pendulum rocker damper 1a with rocker elements which are deflected to the maximum under compression of the energy storage element arranged in between and are tilted under the influence of transverse force,
• 1c : a detailed view of the pendulum rocker damper 1a with a schematically shown positive guidance to prevent the rocker elements from tilting under the influence of lateral forces,
• 2a : a first exemplary embodiment of a pendulum rocker damper with a friction device and positive guidance of the rocker elements,
• 2 B : a perspective detailed view of the friction device of the pendulum rocker damper 2a ,
• 2c : a sectional view of the friction device of the pendulum rocker damper 2a ,
• 3a : a second exemplary embodiment of a pendulum rocker damper with a friction device and positive guidance of the rocker elements,
• 3b : a perspective detailed view of the friction device of the pendulum rocker damper 3a ,
• 4 : a first assembly step of the pendulum rocker damper 3a ,
• 5 : a second assembly step of the pendulum rocker damper 3a ,
• 6 : a third assembly step of the pendulum rocker damper 3a , and
• 7 : A perspective detailed view of the friction device of a third embodiment of a pendulum rocker damper.

In the 1a until 1c Detailed views of a pendulum rocker damper 1 from the prior art are shown for a drive train of a motor vehicle. For example, in this context the DE 10 2019 121 205 A1 referred.

The pendulum rocker damper 1 has an axis of rotation D, an input flange 2 for receiving a torque, an output flange 3 for emitting a torque and a plurality of rocker elements 4 distributed in the circumferential direction U of the pendulum rocker damper 1 in a torque-transmitting connection between the input flange 2 and the output flange 3.

One energy storage element 11 is arranged between two rocker elements 4 adjacent in the circumferential direction U and supports them in a swingable manner against one another. The energy storage element 11 is designed as a compressible coil spring. In 1a the pendulum rocker damper 1 is shown in its rest position, ie the energy storage element 11 is not compressed and the rocker elements 4 are not deflected.

A first rolling body 5 and a second rolling body 6 are present for each rocker element 4. Each of the rocker elements 4 has a first link track 7 for rolling the first rolling body 5 and a second link track 8 for rolling the second rolling body 6. The input flange 2 has a first counter-track 9 that is complementary to the first slide track 7, and the output flange 3 has a second counter-track 10 that is complementary to the second slide track 8. The first rolling body 5 is guided in a rollable manner between the first link track 7 and the first counter-track 9, and the second rolling body 6 is guided in a rollable manner between the second link track 8 and the second counter-track 10.

Each of the rocker elements 4 has two rocker plates 17 spaced apart in the axial direction A of the pendulum rocker damper 1 by spacer rivets 16. Sections of the input flange 2 and the output flange 3 extend into the space between the two rocker plates 17.

In 1b the rocker elements 4 of the pendulum rocker damper 1 are deflected to the maximum under compression of the energy storage element 11 arranged between the rocker elements 4 and tilted under the influence of transverse force. Depending on the direction of the introduced torque and the excitation by torsional vibrations, a tensile transverse force Z acts on the left rocker element 4 shown in the transverse direction or in the radial direction R of the pendulum rocker damper 1 outwards and a shear-side transverse force S in the radial direction R inwards The rocker element 4 shown on the right acts in the radial direction R outwards, the shear-side transverse force S and in the radial direction R inwards the tensile-side transverse force Z. The transverse forces are absorbed by the energy storage element 11, which, however, can lead to a tilting of the rocker elements 4.

In particular in pendulum rocker dampers 1, in which each of the rocker elements 4 is swingably mounted with only a single rolling element 5 on the input flange 2 and with only one further rolling element 6 on the output flange 3, but also in pendulum rocker dampers 1 with several input-side and output-side rolling elements 5, 6 Due to manufacturing tolerances, it can therefore prove to be disadvantageous that the rocker elements 4 become tilted during operation, in which the rolling elements 5, 6 lose contact with the slide tracks 7, 8. The rocker elements 4 can strike other components of the pendulum rocker damper 1, which can cause annoying noises.

To avoid this is with reference 1c It has been considered to provide a forced guidance 13 between the rocker elements 4 adjacent in the circumferential direction U, which in 1c is shown schematically. Due to the positive guidance 13, the energy storage element 11 is free of transverse forces, which also means that the rocker elements 4 can be prevented from being tilted during operation of the pendulum rocker damper 1.

The 2a until 7 relate to exemplary embodiments of pendulum rocker dampers 1 with a friction device 12 with a positive guide 13, which absorbs the transverse forces that occur between the rocker elements 4 during operation of the pendulum rocker damper 1. Features that are not marked as essential to the invention in the following description are to be understood as optional.

Similar to the 1a until 1c the pendulum rocker damper 1 is mounted rotatably about the axis of rotation D. The pendulum rocker damper 1 has the input flange 2 for receiving a torque, the output flange 3 for emitting a torque and a plurality of rocker elements 4 distributed in the circumferential direction U of the pendulum rocker damper 1 in a torque-transmitting connection between the input flange 2 and the output flange 3.

One energy storage element 11 is arranged between two rocker elements 4 adjacent in the circumferential direction U and supports them in a swingable manner against one another. The energy storage element 11 is preferably designed as a compressible coil spring. At least one first rolling body 5 and at least one second rolling body 6 are present for each rocker element 4. In particular, exactly one first rolling body 5 and exactly one second rolling body 6 are provided per rocker element 4.

Each of the rocker elements 4 has the first link track 7 for rolling the first rolling body 5 and the second link track 8 for rolling the second rolling body 6. The input flange 2 has the first counter-track 9, which is complementary to the first slide track 7, and the output flange 3 has the second counter-track 10, which is complementary to the second slide track 8. The first rolling body 5 is between the first scenes track 7 and the first counter-track 9 are guided in a rollable manner, and the second rolling element 6 is guided in a rollable manner between the second link track 8 and the second counter-track 10.

A friction device 12 with a positive guide 13 is provided between two rocker elements 4 adjacent in the circumferential direction U, which absorbs the transverse forces that occur between the rocker elements 4 during operation of the pendulum rocker damper 1. Due to the positive guidance 13 in the friction device 12, the respective energy storage element 11 is free of transverse forces. Furthermore, the positive guidance 13 in the friction device 12 enables the generation of a friction hysteresis, i.e. the generation of direction-dependent friction. The friction torque that occurs is not constant, but depends on the torsional moment.

It is therefore also possible, in the case of a pendulum rocker damper 1 with more than one first rolling body 5 per rocker element 4 and/or with more than one second rolling body 6 per rocker element 4, to tilt the rocker elements 4 by appropriately designing the link tracks 7, 8 and/or the Counter tracks 9, 10 can be brought about intentionally and used by the friction device 12 with the positive guide 13 to generate a friction hysteresis. The explanations of the exemplary embodiments are therefore not limited to pendulum rocker dampers with a single first rolling body 5 per rocker element 4 and a single second rolling body 6 per rocker element 4.

Each of the rocker elements 4 has two rocker plates 17 spaced apart in the axial direction A of the pendulum rocker damper 1 by spacer rivets 16. Sections of the input flange 2 and the output flange 3 extend into the space between the two rocker plates 17.

The friction device 12 has a first friction point 14 for generating a traction-side friction torque and a second friction point 15 for generating a thrust-side friction torque. In the exemplary embodiment shown, the first friction point 14 is arranged further outward in the radial direction R than the second friction point 16. Both friction points 14, 15 are arranged further outward in the radial direction R than the associated energy storage element 11 arranged between the rocker elements 4 adjacent in the circumferential direction U.

The amount of the traction-side friction torque preferably differs from the amount of the thrust-side friction torque. In particular, the amount of friction torque on the traction side is smaller than the friction torque on the thrust side. For example, one of the two friction points 14, 15, preferably the first friction point 14, comprises a plastic/steel friction pairing, while the other of the two friction points 14, 15, preferably the second friction point 15, comprises a steel/steel friction pairing.

In the first exemplary embodiment, which is in the 2a until 2c is shown, the first friction point 14 is formed by one of the rocker plates 17 of the left rocker element 4 as the first friction partner 18 and by a plastic friction element 21 as the second friction partner 18 at a free end 22 of an arcuate section 20 of the right rocker element 4 adjacent in the circumferential direction U.

The first friction partner 18 is preferably designed as an angled section 19 of said rocker plate 17 of the left rocker element 4, more precisely in the radial direction R on the outside of the angled section 19. The plastic friction element 21 as a second friction partner 18 is preferably formed on the arcuate section 20 of said rocker plate 17 of the right rocker element 4 or is supported by it. The first friction partner 18 and the second friction partner 18 form the first friction point 14, i.e. the plastic/steel friction pairing.

The steel/steel friction pairing as the second friction point 15 comprises a third friction partner 18 and a fourth friction partner 18. The third friction partner 18 is preferably as an angled section 19 of said rocker plate 17 of the left rocker element 4, more precisely in the radial direction R on the inside of the angled one Section 19, trained. The fourth friction partner 18 is preferably designed as a rocker plate end 23 of the right rocker element 4, either from the same rocker plate 17, which also carries the arcuate section 20, or from the rocker plate 17, which lies opposite this in the axial direction A.

The second exemplary embodiment, which is in the 3a until 6 is shown, differs from the first exemplary embodiment of the pendulum rocker damper 1 in that neither the first friction point 14 nor the second friction point 15 comprises an angled section 19 of one of the rocker plates 17 adjacent in the circumferential direction U.

Rather, a U-shaped plastic friction element 21 is arranged as the first friction partner 18 in the axial direction A between the two rocker plate ends 23 of the left rocker element 4. The second friction partner 18 of the first friction points 14 is formed by one of the spacer rivets 16 of the right rocker element 4 adjacent in the circumferential direction U. The spacer rivet 16 preferably has an arcuate section 20, which is connected to the left rocker element 4, which is adjacent in the circumferential direction U, forming one of the first Friction points 14 are located in the system. More precisely, the free end 22 of the arcuate section 20 is slidably guided in the U-shaped plastic friction element 21.

The second friction point 15 is in the illustrated embodiment through the inner edges in the radial direction R of the two rocker plate ends 23 of the left rocker element 4 as a third friction partner 18 and the outer edges in the radial direction R of the two rocker plate ends 23 of the right rocker element 4 adjacent in the circumferential direction U as fourth friction partner 18 trained.

Thus, the first friction partner 18 and the second friction partner 18 form the first friction point 14, i.e. the plastic/steel friction pairing, while the third friction partner 18 and the fourth friction partner 18 form the second friction point 15, i.e. the steel/steel friction pairing. Both friction points 14, 15 are arranged further outward in the radial direction R than the associated energy storage element 11 arranged between the rocker elements 4 adjacent in the circumferential direction U.

In the 4 until 6 There are three assembly steps for the pendulum rocker damper 1 3a shown.

In the first assembly step, which is in 4 is shown, the U-shaped plastic friction element 21 and the spacer rivet 16, also the spacer rivet 16 with the arcuate section 20, are based on 4 , lower rocker plates 17 pre-assembled. They are then referred to 4 , upper rocker plates 17 pre-assembled, and the rocker elements 4 are riveted.

Before the second assembly step, which is in 5 is shown, the rocker elements are grouped around the output flange 3 and the energy storage elements 11 are inserted between the rocker elements 4 adjacent in the circumferential direction U. In the second assembly step, the energy storage elements 4 are compressed, whereby the rocker elements 4 can be tilted so that the second rolling bodies 6 can be inserted in the axial direction A into the second link tracks 8 and the second counter tracks 10.

Before the third assembly step, which is in 6 is shown, with compressed energy storage elements 11, the input flange 2 is positioned in the outer circumference of the rocker elements 4. Then the first rolling elements 5 can be inserted in the axial direction A into the first link tracks 7 and the first counter tracks 9 as long as the energy storage elements 11 are still compressed. The energy storage elements 11 can then be relaxed.

The third exemplary embodiment, which is in 7 is shown, differs from the second exemplary embodiment of the pendulum rocker damper 1 in that the arcuate section 20 of the first friction point 14, ie the second friction partner 18, does not consist of the spacer rivet 16, but rather of one of the rocker plates 17 of the right rocker element 4 adjacent in the circumferential direction U is trained. For this purpose, the rocker plate 17 has an angled section 19 which merges into the arcuate section 20.

The remaining friction partners 18, i.e. the first friction partner of the first friction point 14 and the third and fourth friction partners 18 of the second friction point 15, are designed in accordance with the second exemplary embodiment.

• - einen Eingangsflansch 2 zum Aufnehmen eines Drehmoments;
• - einen Ausgangsflansch 3 zum Abgeben eines Drehmoments;
• - mehrere in Umfangsrichtung U des Pendelwippendämpfers 1 verteilt angeordnete Wippenelemente 4 in drehmomentübertragender Verbindung zwischen dem Eingangsflansch 2 und dem Ausgangsflansch 3;
• - je Wippenelement 4 zumindest einen ersten Wälzkörper 5 und zumindest einen zweiten Wälzkörper 6, wobei das Wippenelement 4 eine erste Kulissenbahn 7 zum Abwälzen des ersten Wälzkörpers 5 und eine zweite Kulissenbahn 8 zum Abwälzen des zweiten Wälzkörpers 6 aufweist, wobei der Eingangsflansch 2 eine zu der ersten Kulissenbahn 7 komplementäre erste Gegenbahn 9 und der Ausgangsflansch 3 eine zu der zweiten Kulissenbahn 8 komplementäre zweite Gegenbahn 10 aufweist, wobei der erste Wälzkörper 5 zwischen der ersten Kulissenbahn 7 und der ersten Gegenbahn 9 abwälzbar geführt ist und der zweite Wälzkörper 6 zwischen der zweiten Kulissenbahn 8 und der zweiten Gegenbahn 10 abwälzbar geführt ist; und
• - zumindest ein Energiespeicherelement 11, das zwischen zwei in Umfangsrichtung U benachbarten Wippenelementen 4 angeordnet ist und diese schwingbar gegeneinander abstützt, wobei zwischen den zwei in Umfangsrichtung U benachbarten

The previous exemplary embodiments relate to a pendulum rocker damper 1 with a rotation axis D for a drive train of a motor vehicle, having at least the following components:

• - an input flange 2 for receiving a torque;
• - an output flange 3 for outputting a torque;
• - several rocker elements 4 distributed in the circumferential direction U of the pendulum rocker damper 1 in a torque-transmitting connection between the input flange 2 and the output flange 3;
• - Each rocker element 4 has at least one first rolling body 5 and at least one second rolling body 6, the rocker element 4 having a first sliding track 7 for rolling the first rolling body 5 and a second sliding track 8 for rolling the second rolling body 6, the input flange 2 being one of the the first slide track 7 has a complementary first counter track 9 and the output flange 3 has a second counter track 10 which is complementary to the second slide track 8, the first rolling body 5 being guided in a rollable manner between the first slide track 7 and the first counter track 9 and the second rolling body 6 between the second slide track 8 and the second counter track 10 is guided so that it can be rolled; and
• - At least one energy storage element 11, which is arranged between two rocker elements 4 adjacent in the circumferential direction U and supports them in a swingable manner against one another, with between the two adjacent in the circumferential direction U

Rocker elements 4 are further provided with a friction device 12 with a positive guide 13, which absorbs the transverse forces that occur between the rocker elements 4 during operation of the pendulum rocker damper 1.

Reference symbol list

1

Pendulum rocker damper

2

Input flange

3

Output flange

4

Rocker element

5

first rolling element

6

second rolling element

7

first backdrop track

8th

second backdrop track

9

first counter lane

10

second counter lane

11

Energy storage element

12

Friction device

13

Coercive guidance

14

first friction point

15

second friction point

16

Spacer rivet

17

rocker plate

18

Friction partner

19

angled section

20

arcuate section

21

Plastic friction element

22

free ending

23

rocker plate end

A

axial direction

D

Axis of rotation

R

radial direction

S

shear side shear force

U

Circumferential direction

Z

Tensile shear force

Claims (7)

Pendulum rocker damper (1) with a rotation axis (D) for a drive train of a motor vehicle, having at least the following components: - an input flange (2) for absorbing a torque; - an output flange (3) for outputting a torque; - several rocker elements (4) distributed in the circumferential direction (U) of the pendulum rocker damper (1) in a torque-transmitting connection between the input flange (2) and the output flange (3); - At least one first rolling body (5) and at least one second rolling body (6) for each rocker element (4), the rocker element (4) having a first sliding track (7) for rolling the first rolling body (5) and a second sliding track (8) for rolling Rolling of the second rolling element (6), the input flange (2) having a first counter-track (9) complementary to the first slide track (7) and the output flange (3) having a second counter-track (10) complementary to the second slide track (8). , wherein the first rolling body (5) is guided in a rollable manner between the first link track (7) and the first counter-track (9) and the second rolling body (6) is guided in a rollable manner between the second link track (8) and the second counter-track (10); and - at least one energy storage element (11) which is arranged between two rocker elements (4) which are adjacent in the circumferential direction (U) and supports them in a swingable manner against one another, with a friction device (12) between the two rocker elements (4) which are adjacent in the circumferential direction (U). is provided with a positive guide (13) which absorbs the transverse forces occurring between the rocker elements (4) during operation of the pendulum rocker damper (1), the friction device (12) having a first friction point (14) for generating a tension-side friction moment and a second friction point ( 15) for generating a frictional torque on the thrust side, and wherein the frictional torque on the traction side differs in magnitude from the frictional torque on the thrust side, the respective rocker element (4) having two rocker plates (17) spaced apart in the axial direction (A) of the pendulum rocker damper (1) by spacer rivets (16). and wherein the input flange (2) and/or the output flange (3) extends into the space between the two rocker plates (17), characterized in that a friction partner (18) of one of the two friction points (14, 15 ) is formed by or is held by at least one of the spacer rivets (16). Pendulum rocker damper (1). Claim 1 , whereby exactly one first rolling body (5) and exactly one second rolling body (6) are provided per rocker element (4). Pendulum rocker damper (1). Claim 1 or 2 , whereby the tension-side friction torque is smaller in magnitude than the shear-side friction torque. Pendulum rocker damper (1) according to one of the Claims 1 until 3 , wherein one of the two friction points (14, 15) comprises a plastic/steel friction pairing, and wherein the other of the two friction points (14, 15) comprises a steel/steel friction pairing. Pendulum rocker damper (1) according to one of the Claims 1 until 4 , wherein the friction partner (18) of one of the two friction points (14, 15) is formed by at least one of the rocker plates (17) in the form of an angled section (19). Pendulum rocker damper (1) according to one of the Claims 1 until 5 , wherein the spacer rivet (16) of one of the rocker elements (4) has an arcuate section (20) which is in contact with the rocker element (4) adjacent in the circumferential direction U to form one of the two friction points (14, 15). Pendulum rocker damper (1) according to one of the Claims 1 until 6 , wherein a plastic friction element (21) is arranged at a free end (22) of the arcuate section (20) or on the rocker element (4) adjacent in the circumferential direction U.

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