DE102022133250A1 - Pendulum rocker damper for a drive train of a motor vehicle, as well as drive train for a motor vehicle - Google Patents

Abstract

The present invention relates to a pendulum rocker damper (1) for a drive train of a motor vehicle, with a primary component (2) which has a sensor ring (18) with teeth (24) and recesses (23) arranged between them in the circumferential direction (U) of the pendulum rocker damper (1) for determining a rotational speed of the drive train, a support disk (26) for supporting the sensor ring (18) and a connecting disk (21) for connection to an input shaft, a secondary component (3) which can be rotated to a limited extent relative to the primary component (2) and at least one rocker element (9) which is suspended in a pendulum manner from the primary component (2) and the secondary component (3) and serves to transmit torque, wherein the rocker element (9) is coupled to the primary component (2) by means of a first roller body (6) which is received in a rolling manner in guide tracks (7, 8) and to the secondary component by means of a second roller body (11) which is also received in a rolling manner in guide tracks (12, 13). (3) is coupled, wherein the rocker element (9) is resiliently supported by at least one compression spring (20), and wherein the support disk (26) covers the recesses (23) of the transmitter ring (18) and/or engages in the recesses (23) of the transmitter ring (18).

Description

The invention relates to a pendulum rocker damper for a drive train of a motor vehicle, such as a car, truck, bus or other commercial vehicle, with a primary component, a secondary component that can be rotated to a limited extent relative to the primary component and at least one rocker element that is suspended from the primary component and the secondary component and serves to transmit torque, wherein the at least one rocker element is coupled to the primary component by means of a first roller body that is received/mounted in a rolling manner in guideways (in that the first roller body is mounted/mounted in a rolling manner in guideways of the primary component and of the at least one rocker element) and/or is coupled to the secondary component by means of a second roller body that is also received/mounted in a rolling manner in guideways (in that the second roller body is mounted/mounted in a rolling manner in guideways of the secondary component and of the at least one rocker element), and wherein the at least one rocker element is resiliently supported by at least one compression spring. In addition, the invention relates to a drive train for a motor vehicle with this pendulum rocker damper.

For the purposes of the invention, a pendulum rocker damper is understood to mean a vibration damping device that has several rocker elements that can be moved in a pendulum manner, the movements of which during operation have a damping effect on the torsional vibrations that arise in the drive train. At least the rocker elements of this pendulum rocker damper are used in the torque flow between the primary component and the secondary component (torque-transmitting).

Pendulum rocker dampers are already well known from the state of the art. For example, the WO 2018/215018 A1 a torsional vibration damper with a torque limiter, which is preferably used in a clutch disc of a clutch. Further state of the art in this context is also known from EN 10 2018 108 441 A1 and the EN 10 2015 211 899 A1 known.

There is a constant need to improve the robustness of a pendulum rocker damper, especially during handling, transport and assembly of the pendulum rocker damper.

The object of the invention is therefore to provide a pendulum rocker damper and a drive train having such a pendulum rocker damper, the robustness of which is improved.

This object is achieved according to the invention by a pendulum rocker damper for a drive train of a motor vehicle according to claim 1, with a primary component which has a sensor ring with teeth and recesses arranged between them in the circumferential direction of the pendulum rocker damper for determining a speed of the drive train, a support disk for supporting the sensor ring and a connecting disk for connection to an input shaft, a secondary component which can be rotated to a limited extent relative to the primary component and at least one rocker element which is suspended from the primary component and the secondary component in a pendulum manner and serves to transmit torque, wherein the rocker element is coupled to the primary component by means of a first roller body which is received in a rolling manner in guide tracks and is coupled to the secondary component by means of a second roller body which is also received in a rolling manner in guide tracks, and wherein the rocker element is resiliently supported by at least one compression spring.

Since the support disc covers the recesses of the sensor ring and/or engages in the recesses of the sensor ring, the robustness of the pendulum rocker damper can be improved, especially during handling, transport and assembly of the pendulum rocker damper.

Preferred embodiments of the present invention are set out in the dependent claims.

Preferably, the support disc has a folded section, whereby the mass moment of inertia of the primary component of the pendulum rocker damper can be increased despite the thin-walled and lightweight support disc material.

In particular, it is advantageous if the support disc is annular, and preferably the folded portion is formed on an inner circumference of the annular support disc.

Furthermore, it is advantageous if the support disk is firmly connected by means of rivet bolts to an input flange of the primary component having a first of the guideways and to the encoder ring, and preferably to the connecting disk.

Preferably, the support disk has a shoulder in the radial direction of the pendulum rocker damper outside the rivet bolts. This can also improve the robustness of the pendulum rocker damper, particularly during handling, transport and assembly of the pendulum rocker damper.

In particular, it is advantageous if the shoulder is formed in the radial direction between the rivet bolts and the teeth of the sensor ring.

Furthermore, it is advantageous if the sensor ring has a wall area in its outer circumference from which the teeth protrude in the axial direction of the pendulum rocker damper.

Preferably, the wall area and the teeth of the sensor ring overlap both the secondary component and the rocker element, and preferably the compression spring in the axial direction. This overlap also helps to increase the robustness of the pendulum rocker damper.

Preferably, the support disc is arranged at the other end of the pendulum rocker damper with respect to the connecting disc in the axial direction of the pendulum rocker damper.

It is advantageous if at least one mass segment, preferably a mass ring, is arranged in the axial direction between the connecting disk and the support disk, preferably a bottom region of the sensor ring and the support disk, in the radial direction outside the rocker element and within the teeth of the sensor ring.

It is advantageous if the compression spring is arranged between the rocker element and another rocker element spaced apart in the circumferential direction of the pendulum rocker damper.

Preferably, the support disk has a closed outer circumference that covers one end face of the teeth of the sensor ring in the axial direction, preferably in a tight fit. This can also improve the robustness of the pendulum rocker damper, particularly during handling, transport and assembly of the pendulum rocker damper.

Alternatively, it is advantageous if the support disk has teeth on its outer circumference, the width of which, measured in the circumferential direction, essentially corresponds to the width of the respective recesses in the sensor ring, and which engage in the respective recesses in the sensor ring in the radial direction. This can also improve the robustness of the pendulum rocker damper, particularly during handling, transport and assembly of the pendulum rocker damper.

The aforementioned object is further achieved according to the invention by a drive train for a motor vehicle, with an internal combustion engine and a pendulum rocker damper according to one of the preceding embodiments, wherein the primary component of the pendulum rocker damper is attached to a crankshaft of the internal combustion engine.

• 1 eine halbe Schnittansicht eines ersten Ausführungsbeispiels eines Pendelwippendämpfers mit einem Geberring und einer Stützscheibe, die Aussparungen des Geberrings abdeckt,
• 2 eine perspektivische Detailansicht eines Teilbereichs des Pendelwippendämfers aus 1 von der Ausgangsseite aus betrachtet,
• 3 die Stützscheibe des Pendelwippendämpfers aus 1,
• 4 eine halbe Schnittansicht eines zweiten Ausführungsbeispiels eines Pendelwippendämpfers mit einem Geberring und einer Stützscheibe, die in die Aussparungen des Geberrings eingreift,
• 5 eine perspektivische Detailansicht eines Teilbereichs des Pendelwippendämfers aus 4 von der Ausgangsseite aus betrachtet, und
• 6 die Stützscheibe des Pendelwippendämpfers aus 4.

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

• 1 a half sectional view of a first embodiment of a pendulum rocker damper with a sensor ring and a support disk that covers recesses in the sensor ring,
• 2 a perspective detailed view of a part of the pendulum rocker damper from 1 viewed from the output side,
• 3 the support disc of the pendulum rocker damper 1 ,
• 4 a half sectional view of a second embodiment of a pendulum rocker damper with a transmitter ring and a support disk which engages in the recesses of the transmitter ring,
• 5 a perspective detailed view of a part of the pendulum rocker damper from 4 viewed from the output side, and
• 6 the support disc of the pendulum rocker damper 4 .

The figures are merely schematic in nature and therefore serve exclusively to understand the invention. Features that are not identified as essential to the invention in the following description are to be understood as optional.

The 1 to 6 relate to embodiments of a rocker damper 1 for a drive train of a motor vehicle. The rocker damper 1 is mounted so as to be rotatable about a rotation axis D and has a multi-part primary component 2 and a multi-part secondary component 3. The primary component 2 is arranged on the input side of the rocker damper 1, while the secondary component 3 is arranged on the output side of the rocker damper 1. The terms input side and output side refer to the arrangement of the motor (main) drive source, ie usually to the arrangement of the internal combustion engine in a conventional or hybrid drive train, or to the arrangement of the electric motor in an electric drive train.

The primary component 2 has an elastic connecting disc 21, preferably in the axial direction A of the pendulum rocker damper 1, for connecting connection to an input shaft. The connecting disk 21 is essentially ring-shaped. The input shaft can in particular be the crankshaft of an internal combustion engine. Therefore, the connecting disk 21 has screw holes on the inside in the radial direction R of the pendulum rocker damper 1 for screwing to the crankshaft.

In the illustrated embodiments, the connecting disk 21 has a cupping in the radial direction R outside the screw holes. This cupping also supports the elastic deformability of the connecting disk 21 in the axial direction A.

In the radial direction R outside the cup, the connecting disk 21 is firmly connected to a sensor ring 18 for determining a speed of the drive train, in particular of the internal combustion engine flanged on the input side of the pendulum rocker damper 1, in particular riveted by rivet bolts 19. More precisely, the connecting disk 21 is firmly connected to a base region 25 of the sensor ring 18, in particular riveted by the rivet bolts 19.

In particular, the sensor ring 18 and the connecting disk 21 are designed as formed sheet metal parts.

The sensor ring 18 has a wall region 22 in its outer circumference, which extends essentially in the axial direction A. The ring-shaped base region 25, which extends essentially in the radial direction R, merges into the said wall region 22 of the sensor ring 18. Teeth 24 protrude from the wall region 22 in the axial direction A of the pendulum rocker damper 1. Teeth 24 of the sensor ring 18 that are adjacent in the circumferential direction U of the pendulum rocker damper 1 are spaced apart by essentially regular recesses 23 for sensor-based determination of the speed.

In other words, the outer circumference has a substantially regular toothing that extends in the axial direction A. In this context, “substantially regular” means that the constant spacing of the recesses 23 or the teeth 24 should enable a sensor-based determination of the rotational speed. For example, one of the recesses 23 can be made longer in the circumferential direction U in order to determine the top dead center of the piston in an internal combustion engine, for example in the first cylinder.

The primary component 2 also has an input flange 4. The input flange 4 is firmly connected to the connecting disk 21 and the sensor ring 18 by means of the rivet bolts 19 which are distributed in the circumferential direction U and arranged in the radial direction R between the potting and the wall area 22 and extend in the axial direction A. The primary component 2 is coupled to the secondary component 3 via a plurality of rocker elements 9 which are distributed in the circumferential direction U and can be rotated relative to the secondary component within a limited range of angles of rotation.

Furthermore, the primary component 2 has a support disk 26 which is arranged in the axial direction A at the other end of the pendulum rocker damper 1 with respect to the connecting disk 21. The support disk 26 is firmly connected to the input flange 4, the connecting disk 21 and the sensor ring 18, more precisely the base region 25 of the sensor ring 18, by means of the rivet bolts 19.

The support disk 26 is ring-shaped. The support disk 26 also has a folded section 30 to increase the mass moment of inertia of the rocker damper 1 on the input side. The folded section 30 is preferably a double-layer, folded sheet metal structure. The folded section 30 is preferably formed on an inner circumference of the ring-shaped support disk 26.

The support disk 26 has a shoulder 31 in the radial direction R outside the rivet bolts 19. More precisely, the shoulder 31 is formed in the radial direction R between the rivet bolts 19 and the teeth 24 of the sensor ring 18. In the sectional view, the shoulder 31 is essentially S-shaped.

The support disk 26 has in the embodiment shown in the 1 to 3 is shown, has a closed outer circumference which covers, preferably adjacently, an end face 32 of the teeth 24 of the encoder ring 18 in the axial direction A. This closed outer circumference is arranged outside the shoulder 31 in the radial direction R.

In addition, further mass segments 29, in particular mass rings, can be provided in the axial direction A between the support disk 26 and the input flange 4 and/or in the axial direction A between the input flange 4 and the base area 25 of the encoder ring 18 and/or in the axial direction A between the base area 25 of the encoder ring 18 and the connecting disk 21 in order to increase the mass moment of inertia of the pendulum rocker damper 1 on the input side. These further mass segments 29 can, if necessary also stacked in the axial direction A, be connected to the connecting disk by means of the same rivet bolts 19. 21, the sensor ring 18, the input flange 4 and the support disk 26.

In particular, the mass segments 29 are designed in the shape of a circular arc segment and are arranged in the radial direction R outside the rocker element 9 and within the teeth 24 of the sensor ring 18 and/or within the wall region 22 of the sensor ring 18.

The primary component 2 is coupled to the secondary component 3 via the rocker elements 9 and can be rotated relative to the latter within a limited angle of rotation range. The rocker elements 9 are each designed identically. The rocker elements 9 are arranged in the radial direction R within the cupping of the connecting disk 21. The wall area 22 overlaps both the secondary component 3 and the rocker elements 9 in the axial direction A.

Each of the three rocker elements 9, which are evenly distributed in the circumferential direction U, has two rocker plates 14, 15 spaced apart in the axial direction A. These two rocker plates 14, 15 are preferably designed as identical parts. The two rocker plates 14, 15 are connected to one another via several rivet elements 16.

The rivet elements 16 are designed as formable sheet metal segments. Rivet noses of these rivet elements 16 penetrate the respective rocker plate 14, 15 in the axial direction A and are formed from a rear side for the positive and non-positive fixing of the two rocker plates 14, 15 to one another.

The input flange 4 is coupled to the rocker elements 9 via a plurality of first roller bodies 6 distributed in the circumferential direction U. The input flange 4 has a plurality of first guide tracks 7 distributed in the circumferential direction U, each of which receives a first roller body 6 in a rolling manner. The first guide tracks 7 are introduced on a radial inner side of the input flange 4. In this context, it should also be noted that the input flange 4 can be segmented, for example, for better material utilization and is therefore not completely circumferential / one-piece as here, but is made up of a plurality of sub-segments arranged next to one another in the circumferential direction U.

Each first roller body 6 is also in rolling contact with a second guide track 8 mounted directly on a radial outer side of the rocker plates 14, 15. There are two second guide tracks 8 for each rocker plate 14, 15, with two second guide tracks 8, each arranged congruently in the axial direction A, accommodating the same first roller body 6. There are two first roller bodies 6 for each rocker element 9. There are therefore a total of six first roller bodies 6.

Each rocker element 9 is also in rolling contact with a further second roller body 11. The second roller body 11 is preferably arranged within the first roller bodies 6 in the radial direction R, but can also be arranged on the same radius. The second roller body 11 is in rolling contact with a third guide track 12 of the respective rocker plate 14, 15. In addition, the second roller body 11 is in rolling contact with a fourth guide track 13, which in turn is formed on an output flange 5 of the secondary component 3.

As a result, the two components - primary component 2 and secondary component 3 - are rotationally coupled to one another via the rocker elements 9 and the corresponding roller bodies 6, 11, whereby these two components 2, 3 are arranged in different relative rotational positions depending on the position of the rocker elements 9. While the first roller bodies 6 rotationally couple the primary component 2 to the rocker elements 9, the second roller bodies 11 are used to couple the rocker elements 9 to the secondary component 3.

Furthermore, energy storage devices in the form of compression springs 20 are arranged in the circumferential direction U between the rocker elements 9 spaced apart from one another. One of the compression springs 20 is arranged between two rocker elements 9 adjacent to one another in the circumferential direction U. As a result, each of the three compression springs 20 supports the two rocker elements 9 arranged next to one another in the circumferential direction U in a spring-elastic manner relative to one another (in their pendulum movement) in the circumferential direction U.

In this regard, it should be noted that the compression springs 20 used are therefore not arranged along a torque transmission path from the primary component 2 to the secondary component 3. In further embodiments, however, it is also possible to arrange these compression springs 20 in the torque flow and consequently to support the primary component 2 and/or the secondary component 3 via the compression springs 20 on the respective rocker element 9 for torque transmission.

In addition to the output flange 5, the secondary component 3 has a hub element 10 firmly connected to it. The hub element 10 preferably has a spline in its inner circumference. In the radial direction R, except Between the splines, the hub element 10 has a plurality of (axial) through holes 17 distributed in the circumferential direction U, which are aligned with the screw holes in the connecting disk 21 and are dimensioned such that they are larger than a screw head of the screw attaching the connecting disk 21 to the crankshaft.

In relation to the drive train of a motor vehicle (not shown), the primary component 2 of the rocker damper 1 is attached to the crankshaft of the internal combustion engine. In particular, this can be a hybrid drive train in which the internal combustion engine is arranged on the input side of the rocker damper 1 and the electric motor is arranged on the output side of the rocker damper 1.

With regard to the embodiment of the pendulum rocker damper 1, which is shown in the 4 to 6 is shown, only the differences to the previous embodiment of the pendulum rocker damper 1, which is shown in the 1 to 3 shown. The same reference numerals denote the same features.

The support disk 26 has in the embodiment shown in the 4 to 6 , has teeth 28 in its outer circumference, the width of which, measured in the circumferential direction U, essentially corresponds to the width of the respective recesses 23 of the sensor ring 18. Recesses 27 are formed in the support disk 26 between the teeth 28, so that the support disk 26 does not have a closed outer circumference in this embodiment. The recesses 27 and the teeth 28 of the support disk 26 are arranged outside the shoulder 31 in the radial direction R.

The teeth 28 of the support disk 26 engage in the respective recesses 23 of the sensor ring 18 in the radial direction R. Since the width of the teeth 28 essentially corresponds to the width of the respective recesses 23 of the sensor ring 18, the components can be assembled without any problems. "Essentially" therefore means that there is preferably no force fit and no form fit between the components, i.e. that the width of the teeth 28 of the support disk 26 is slightly smaller than the width of the recesses 23 of the sensor ring 18.

Both support discs 26, which are in the 3 and 6 are each shown individually, they have the advantage that they protect the teeth 24 of the sensor ring 18 against plastic deformation, in particular during handling, transport and assembly of the pendulum rocker damper 1.

The preceding embodiments relate to a rocker damper 1 for a drive train of a motor vehicle, with a primary component 2, which has a sensor ring 18 with teeth 24 and recesses 23 arranged between them in the circumferential direction U of the rocker damper 1 for determining a speed of the drive train, a support disk 26 for supporting the sensor ring 18 and a connecting disk 21 for connection to an input shaft, a secondary component 3 which can be rotated to a limited extent relative to the primary component 2 and at least one rocker element 9 which is suspended from the primary component 2 and the secondary component 3 in a pendulum-like manner and serves to transmit torque, wherein the rocker element 9 is coupled to the primary component 2 by means of a first roller body 6 which is received in a rolling manner in guide tracks 7, 8 and is coupled to the secondary component 3 by means of a second roller body 11 which is also received in a rolling manner in guide tracks 12, 13, wherein the rocker element 9 is connected to the secondary component 3 by at least one Compression spring 20 is resiliently supported, and wherein the support disk 26 covers the recesses 23 of the sensor ring 18 and/or engages in the recesses 23 of the sensor ring 18, as well as a drive train for a motor vehicle with such a pendulum rocker damper 1.

List of reference symbols

1

Pendulum rocker damper

2

Primary component

3

Secondary component

4

Inlet flange

5

Output flange

6

first roller body

7

first guideway

8th

second guideway

9

Rocker element

10

Hub element

11

second roller body

12

third guideway

13

fourth guideway

14

first rocker plate

15

second rocker plate

16

Rivet element

17

Through hole

18

Sensor ring

19

Rivet bolts

20

Compression spring

21

Connecting disc

22

Wall area

23

Recess

24

Tooth

25

Floor area

26

Support disc

27

Recess

28

Tooth

29

Mass segment

30

folded section

31

Paragraph

32

Front side

A

axial direction

D

Rotation axis

R

radial direction

U

Circumferential direction

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was 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 accepts no liability for any errors or omissions.

Cited patent literature

• WO 2018215018 A1 [0003]
• DE 102018108441 A1 [0003]
• DE 102015211899 A1 [0003]

Claims (10)

Pendulum rocker damper (1) for a drive train of a motor vehicle, with a primary component (2) which has a sensor ring (18) with teeth (24) and recesses (23) arranged between them in the circumferential direction (U) of the pendulum rocker damper (1) for determining a speed of the drive train, a support disk (26) for supporting the sensor ring (18) and a connecting disk (21) for connection to an input shaft, a secondary component (3) which can be rotated to a limited extent relative to the primary component (2) and at least one rocker element (9) which is suspended in a pendulum manner from the primary component (2) and the secondary component (3) and serves to transmit torque, wherein the rocker element (9) is coupled to the primary component (2) by means of a first roller body (6) which is received in a rolling manner in guide tracks (7, 8) and is coupled to the secondary component (3) by means of a second roller body (11) which is also received in a rolling manner in guide tracks (12, 13). wherein the rocker element (9) is resiliently supported by at least one compression spring (20), and wherein the support disk (26) covers the recesses (23) of the transmitter ring (18) and/or engages in the recesses (23) of the transmitter ring (18). Pendulum rocker damper (1) after Claim 1 , wherein the support disc (26) has a folded portion (30). Pendulum rocker damper (1) after Claim 1 or 2 , wherein the support disc (26) is annular, and preferably the folded portion (30) according to Claim 2 on an inner circumference of the annular support disc (26). Pendulum rocker damper (1) according to one of the Claims 1 until 3 , wherein the support disk (26) is firmly connected by means of rivet bolts (19) to an input flange (4) of the primary component (2) having a first of the guide tracks (7, 8) and to the sensor ring (18), and preferably to the connecting disk (21). Pendulum rocker damper (1) after Claim 4 , wherein the support disk (26) has a shoulder (31) in the radial direction (R) of the pendulum rocker damper (1) outside the rivet bolts (19). Pendulum rocker damper (1) after Claim 5 , wherein the shoulder (31) is formed in the radial direction (R) between the rivet bolts (19) and the teeth (24) of the sensor ring (18). Pendulum rocker damper (1) according to one of the Claims 1 until 6 , wherein the support disc (26) is arranged at the other end of the pendulum rocker damper (1) with respect to the connecting disc (21) in the axial direction (A) of the pendulum rocker damper (1). Pendulum rocker damper (1) according to one of the Claims 1 until 7 , wherein the support disk (26) has a closed outer circumference which covers, preferably adjacently, an end face (32) of the teeth (24) of the sensor ring (18) in the axial direction (A). Pendulum rocker damper (1) according to one of the Claims 1 until 7 , wherein the support disk (26) has teeth (28) in its outer circumference, the width of which, measured in the circumferential direction (U), substantially corresponds to the width of the respective recesses (23) of the sensor ring (18), and which engage in the respective recesses (23) of the sensor ring (18) in the radial direction (R). Drive train for a motor vehicle, with an internal combustion engine and a pendulum rocker damper (1) according to one of the Claims 1 until 9 , wherein the primary component (2) of the pendulum rocker damper (1) is attached to a crankshaft of the internal combustion engine.