DE102011086436A1 - Torsional vibration damper device for torque transmission device, has flange that is rotatably mounted around central axis, and stop-damping device has mounting section extending in axial direction - Google Patents

Abstract

The torsional vibration damper device (1) has a flange (2) that is rotatably mounted around a central axis (Z). A stop-damping device (6) has a mounting section (7) extending in an axial direction (A), by which the stop-damping device is fixed on the flange or to an absorber mass (3). The stop-damping device is made up of elastomer or rubber. An independent claim is also included for a torque transmission device for a motor vehicle with a torsion damper, particularly a two-mass flywheel.

Description

The present invention relates to a torsional vibration damper device according to the preamble of claims 1 and 8. In addition, the present invention relates to a torque transmitting device for a motor vehicle with at least one torsional damper and at least one torsional vibration damper device of the aforementioned type.

A torsional vibration absorber device according to the preamble of claims 1 and 8 is shown in FIG DE 10 2009 042 836 A1 disclosed. The torsional vibration absorber device has a flange that is rotatable about a central axis. Several Tilgermassen pivotable under centrifugal force relative to the flange are guided by a roller device on the flange feasible. The roller device comprises a damper mass-side roller conveyor, a flange-side roller conveyor and a roller which can be moved by means of the absorber mass-side roller conveyor and the flange-side roller conveyor for guiding the absorber mass during pivoting.

In addition, the torsional vibration damper device has a one-piece stop damping device for damping a stop of the absorber mass during the pivoting. The stop damping device is designed as a central stop buffer, which is supported in its outer periphery by connecting elements which connect opposing absorber masses together.

It is an object of the present invention to provide a torsional vibration damper device and a torque transmission device for a motor vehicle, wherein the torsional vibration damper device is intended to enable a reliable limitation of the pivoting of their absorber mass.

According to the invention, this object is achieved by a torsional vibration damper device according to claim 1 with a flange which is rotatably mounted about a central axis, at least one absorber mass pivotable relative to the flange under centrifugal force and at least one integral stop damping device for damping an abutment of the absorber mass during pivoting. The stop damping device has at least one fastening section extending in the axial direction, by means of which the stop damping device is fastened to the flange or to the absorber mass. Due to the one-piece design and the projecting in the axial direction attachment of the stop damping device, it is possible to reliably limit the pivoting of the absorber mass in the vicinity of the extremum of their deflection.

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

The torsional vibration absorber is, in particular, a centrifugal pendulum for a motor vehicle. The centrifugal pendulum can be arranged on an output side of a torsion damper. In particular, the flange of the centrifugal pendulum can be designed as the output flange of a dual mass flywheel. The output flange can be non-rotatably connected to a coupling. The clutch may be a single clutch or a double or multiple clutch.

For example, the flange of the rotary oscillation damper device in the form of a centrifugal pendulum can have, in its radially outer region, four, six or eight absorber masses, which are pivotable under centrifugal force relative to the flange. However, the number of absorber masses may also be less than four or greater than eight, and may also be odd if necessary. Thus, at least one absorber mass in the radially outer region of the flange is arranged and pivotable under centrifugal force relative to the flange.

The absorber masses may be arranged in the axial direction of the torsional vibration damper device on one side of the flange. However, the absorber masses may also be arranged in pairs on axially opposite sides of the flange and connected to each other. In this case, it is possible that the flange has a plurality of apertures through which bolts extend, by means of which the two axially opposing absorber masses of a Tilgermassenpaars are interconnected.

It is also possible that the flange has in its outer periphery one or more recesses in which one or more intermediate plates are arranged. The one or more intermediate plates are used to increase the pendulum mass and spaced in the axial direction of the absorber masses of Tilgermassenpaars. By means of bolts, which extend through the two absorber masses of a Tilgermassenpaars and the one or more intermediate plates, the absorber masses are interconnected.

Furthermore, it is also possible that the absorber mass or the absorber masses are mounted in the axial direction between side elements of the flange and are arranged pivotably under centrifugal force.

For cost-effective production, the absorber masses are preferably formed as sheet metal components. In particular, the absorber masses are stamped components. However, it is also possible, for example, to produce the absorber masses as cast components.

The absorber masses or Tilgermassenpaare are tuned and stored on the flange that they move at low speeds, especially at speeds less than 600 rev / min under centrifugal force relative to the flange. Depending on the direction of rotation of the flange, the displacement of the absorber masses takes place in one or the other direction, so that the absorber masses, starting from a non-deflected rest position depending on the direction of rotation of the flange two opposite extreme positions, that can take extreme deflections.

Preferably, the stop damping device is connected by the attachment portion extending in the axial direction at least frictionally connected to the flange or the absorber mass. In particular, it is advantageous if the fastening section extending in the axial direction is designed as a snap connection, in particular as a clip or as a spring clip. As a result, a particularly reliable connection of the stop damping device with the flange or the absorber mass is possible.

Further preferably, the stopper damping device is formed of an elastic material. Preferably, the elastic material is an elastomeric or rubbery material. The elastomer-containing or rubber-containing material may be in its pure form, but may also have other, for example, stability-promoting or life-prolonging additives.

According to a further preferred embodiment, the stop damping device has at least one substantially strip-shaped abutment section. The strip-shaped stopper portion may extend in the circumferential direction and / or in the radial direction of the torsional vibration absorber device.

Preferably, the strip-shaped stop portion at least partially on a convex and / or concave shape. This convex and / or concave shape may contain additional shape features, in particular recesses, which prevent premature contact of the stop partner, in particular the absorber mass. Alternatively or additionally, the convex and / or concave shape may also have other shape features that promote premature contact of the stop partner, for example, projections.

Preferably, at least at each end of the strip-shaped abutment portion, a fastening portion extending in the axial direction is provided for fastening the abutment damping means to the flange or to the absorber mass. These end-side fastening sections are preferably the only fastening sections for fastening the stopper damping device. However, it is also possible, for example, for the stop damping device to have a substantially annular design and to have at least one, preferably a plurality of fastening sections extending in the axial direction in its circumference.

According to a particularly preferred embodiment, the stop damping device is attached to the flange. A rear side of the stop damping device lies in the radial direction on a side element connected to the flange or formed integrally with the flange. The absorber mass can be brought into contact with the pivoting with a front side of the stop damping device.

The above object is further achieved according to the invention by a torsional vibration damper device according to claim 8 with a flange which is rotatably mounted about a central axis, at least one under centrifugal force relative to the flange pivotable absorber mass and at least one roller device, the at least one by means of a absorber mass-side roller conveyor and a flange-side roller conveyor has rollable role to guide the absorber mass during pivoting. The absorber mass has in the region of the absorber mass-side roller conveyor on a radially inwardly projecting portion, whereby it is possible to reliably limit the pivoting of the absorber mass in the vicinity of the extremum of their deflection. In particular, it is advantageous if the torsional vibration damper device is designed according to one of the previously described embodiments.

Further preferred embodiments of the present invention are set forth in the dependent claims.

The radially inwardly projecting portion and the absorber mass-side roller conveyor are preferably provided in the circumferential direction in an end region of the absorber mass. In particular, it is advantageous if in the radial direction inwardly projecting portions and absorber mass-side roller tracks are provided in the circumferential direction at both ends of the absorber mass. in this connection it is advantageous if the absorber mass is mirror-symmetrical to a symmetry plane spanned by the central axis and a radial beam.

The absorber mass-side roller tracks and / or the flange-side roller tracks preferably have a substantially kidney-shaped contour. However, it is also possible that the roller conveyors have a substantially slot-shaped or oval contour.

The radially inwardly projecting portion of the absorber mass preferably includes an angle smaller than 90 °. In particular, this angle is preferably between 45 ° and 85 °.

The above object is further achieved according to the invention by a torque transmission device for a motor vehicle according to claim 10 having at least one torsional damper and at least one torsional vibration damper device according to at least one of the preceding embodiments, wherein the torsional vibration damper device is disposed on an output side of the torsion damper.

Preferably, the torsion damper is a dual mass flywheel, wherein the flange of the torsional vibration damper device is formed as the output flange of the dual mass flywheel.

The present invention will be explained in more detail below with reference to preferred embodiments in conjunction with the accompanying figures. In these show:

1 a half-section through an embodiment of a torque transmission device,

2 a plan view of a section of an embodiment of a torsional vibration damper device of the torque transmission device in 1 and

3 a plan view of a section of the torsional vibration absorber

2 wherein absorber masses of the torsional vibration damper device are in a deflected state.

The 1 to 3 relate to a particularly preferred embodiment of a torsional vibration damper device 1 for a motor vehicle or a torque transmission device 18 that the torsional vibration absorber device 1 having. Features that are not marked in the present description as essential to the invention are to be understood as optional. Therefore, the following description also concerns further embodiments of the torsional vibration absorber device 1 or the torque transmission device 18 which have sub-combinations of the features to be explained below.

The torque transmission device 18 is preferably provided in the drive train of a motor vehicle and has, in addition to the torsional vibration damper device 1 a torsion damper 19 on. Preferably, the torsion damper 19 designed as a dual mass flywheel.

On its input side is the torque transmission device 18 connected to an internal combustion engine, not shown. In particular, a crankshaft of the internal combustion engine for transmitting torque is non-rotatable with a primary side 20 of the torsion damper 19 directly or indirectly connected. To axial vibrations of the crankshaft and / or the torsion damper 19 during operation of the torque transmitting device 18 To prevent is preferably a flexplate 24 to which the torque is transmitted from the crankshaft of the internal combustion engine, on the primary side 20 of the torsion damper 19 arranged.

Over in the circumferential direction of the torque transmission device 18 arranged energy storage, in particular bow springs, the torque from the primary side 20 on a secondary side 21 of the torsion damper 19 transfer. For this purpose, has an output flange on the secondary side 21 one or more drivers 22 on, with the or the bow springs in investment or engaged.

Preferably, a flange 2 the torsional vibration absorber device 1 as output flange of the torsion damper 19 educated. On the secondary side 21 of the torsion damper 19 is the torque from the flange 2 the torsional vibration absorber device 1 or from the output flange of the torsion damper 19 on an input side of a clutch, in particular a counter-pressure plate 25 a single clutch or a central plate of a double clutch, transmitted. This is the flange 2 or the output flange in the illustrated embodiment by a plurality of bolts, in particular rivets 23 , non-rotatable with the counterpressure plate 25 connected to the single clutch. Instead of the rivet 23 For example, a screw connection is possible.

The torsional vibration absorber device 1 preferably has several absorber masses 3 , in particular a plurality of absorber mass pairs, which are equally spaced apart in the circumferential direction of the torsional vibration damper device 1 are arranged. Preferably, each of the absorber masses 3 essentially the shape of a sickle or a Ring section on. The absorber mass 3 is preferably mirror-symmetrical to a plane of symmetry formed by an axis of symmetry R extending in the symmetry axis and a central axis Z of the torsional vibration damper device 1 is defined. In the illustrated embodiment, the torsional vibration damper device 1 four absorber mass pairs.

The flange 2 the torsional vibration absorber device 1 , preferably the output flange of the torsion damper 19 or the dual mass flywheel is rotatably mounted about the central axis Z. The central axis Z extends in the axial direction A of the torsional vibration damper device 1 or the torque transmission device 18 , For example, the central axis Z through the crankshaft of the engine, the platen 25 the single clutch or the input shaft of a flanged to the clutch, not shown transmission defined.

The absorber masses 3 or the absorber mass pairs are on rotation of the flange 2 pivotable about the central axis Z under centrifugal force relative to the flange. In particular, a focus of the absorber mass shifts 3 or absorber mass pairs in the radial direction R of the torsional vibration damper device 1 under centrifugal force to the outside, in each case the absorber mass 3 or the absorber mass pair to the flange 2 is tilted.

The torsional vibration absorber device 1 also has two roller devices in the illustrated embodiment 13 per absorber mass 3 or per Tilgermassenpaar on. Depending on the number of parallel in the axial direction A arranged absorber masses 3 has each roller device 13 one or more absorber mass roller conveyors 15 and a flange-side roller conveyor 14 on. To guide the absorber mass 3 or the Tilgermassenpaares has the roller device 13 also a role 16 on, by the flange side and the absorber mass side roller conveyors 14 . 15 during the pivoting of the absorber mass 3 or the Tilgermassenpaars is rollable.

Preferably, each absorber mass has 3 two absorber mass rolls 15 on. The absorber mass side roller conveyors 15 are in the circumferential direction of the torsional vibration absorber device 1 in the area of the two ends of the absorber mass 3 arranged. Preferably, the absorber mass side roller conveyors 15 formed substantially kidney-shaped, but may also have an oval or oblong-shaped contour. The corresponding, flange-side roller conveyors 14 are oval in the illustrated embodiment, but may also have a kidney-shaped or oblong-shaped contour.

In the area of the absorber mass side roller conveyors 15 has the absorber mass 3 each one in the radial direction R inwardly projecting portion 17 on. Thus, the radially inwardly projecting portions 17 preferably in the circumferential direction of the torsional vibration absorber device 1 each at the end or in the region of the respective ends of the absorber mass 3 educated. By the radially inwardly projecting portion 17 it is possible to reliably limit the pivoting of the absorber mass in the vicinity of the extremum of their deflection, which will be discussed in more detail below. In addition, the radially inwardly projecting portion allows 17 an extension of the absorber mass side roller conveyor 15 in the radial direction R.

Preferably, the radially inwardly projecting portion closes 17 an angle α less than 90 °. In particular, the angle α is preferably between 45 ° and 85 °.

When the absorber masses in the axial direction A on both sides of the flange 2 arranged and connected in pairs, it is advantageous if the mutually parallel absorber masses 3 a Tilgermassenpaares in the axial direction A through one or more intermediate plates 4 spaced apart from each other. To grind the insides of the absorber masses 3 on the flange 2 To prevent it, it is advantageous if the total thickness of the or the intermediate sheets 4 in the axial direction A is slightly greater than the thickness or thickness of the flange 2 ,

By means of one or more bolts, in particular rivets 5 passing through corresponding holes in one of the absorber masses 3 , in or in the intermediate sheets 4 and in the other the absorber masses 3 extend through said components are connected to a pendulum mass. Instead of the rivet 5 For example, one or more screws may be provided. Other types of positive and / or positive and / or cohesive connection are possible.

Although in the illustrated embodiment, the absorber masses 3 in the axial direction A on both sides of the flange 2 are provided, and although the flange 2 as a so-called Sparflansch, ie as a flange with recesses in the periphery in which the intermediate plates 4 are provided, is formed, it is also possible absorber masses 3 on only one side of the flange 2 to arrange. It is also possible, the absorber masses 3 as central masses in the axial direction A between two side elements of the flange 2 to arrange.

The torsional vibration absorber device 1 has at least one integrally formed Stop damper 6 on. The stop damping device 6 is for damping a stop of the absorber mass 3 formed during the pivoting. The stop damping device 6 has at least one in the axial direction A projecting or extending attachment portion 7 on, through which the stop damper 6 in the illustrated embodiment, the flange 2 is attached. However, it is also possible that the stop damping device 6 by means of or the attachment sections 7 attached to the respective absorber mass. Due to the one-piece design and the axial attachment of the stop damping device 6 is it possible to pivot the absorber mass 3 to reliably limit their deflection near the extremum.

The stop damping device 6 is by the extending in the axial direction A mounting portion 7 at least frictionally with the flange 2 connected. The extending in the axial direction A attachment portion 7 is preferably designed as a snap connection, in particular as a clip or spring clip. There is a back side 9 the stop damping device 6 in the radial direction R on one with the flange 2 connected page element 11 on. Said page element 11 is for example by means of a pre-riveting 12 with the flange 2 connected and can, as the absorber masses 3 , in the axial direction A on both sides of the flange 2 be arranged. Other types of positive and / or positive and / or cohesive connection are possible. It is also possible that the one or more side elements 11 in one piece with the flange 2 are formed.

Like the flange 2 is also the page element 11 formed substantially annular. Preferably, the side member 11 in the radial direction R outwardly projecting portions, that is, convex portions on which the respective stopper damping device 6 with her backside 9 rests. In addition to holes for pre-riveting 12 have the or the side elements 11 and the flange 2 additional holes for the non-rotatable connection of the flange 2 and the page elements 11 with secondary-side components of the torque transmission device 18 are provided. For example, this is the connection with the counterpressure plate 25 the single clutch by rivets 23 like this in 1 is shown.

When pivoting is the absorber mass 3 with a front side 10 the stop damping device 6 can be brought into contact. In the illustrated embodiment is per absorber mass 3 in each case a stop damping device 6 intended. However, it is also possible, for example, for all absorber masses 3 on one side of the flange 2 a single, substantially annular stop damper device 6 provide substantially the outer periphery of the side member 11 follows.

The stop damping device 6 is preferably formed of an elastic material. In particular, this is preferably an elastomer-containing and / or rubber-containing material.

In addition to or in the axial direction A extending mounting portions 7 has the stopper damping device 6 preferably at least one substantially strip-shaped abutment portion 8th on. The strip-shaped stopper section 8th may at least partially have a convex and / or concave shape. In the illustrated embodiment, the stopper portion follows 8th for example, the convex projection of the side member 11 , The strip-shaped stopper section 8th has at least at each of its ends one of the projecting in the axial direction A mounting portions 7 for fastening the stop damping device 6 on the flange 2 on.

Although not shown in the figures, the same applies, for example, when the stop damping device 6 in the axial direction A at the absorber mass 3 is attached and with her back 9 on the intermediate plate 4 or the intermediate plates 4 rests. Furthermore, it is possible that the stop damping device 6 is formed substantially annular.

The foregoing embodiments relate to a torsional vibration absorber device 1 with a flange 2 which is rotatable about a central axis Z storable, at least one under centrifugal force relative to the flange 2 pivotable absorber mass 3 and at least one integral stop damper device 6 for damping a stop of the absorber mass 3 in the pivoting, wherein the stop damper 6 at least one fastening section extending in the axial direction A. 7 through which the stopper damping device 6 on the flange 2 or at the absorber mass 3 is attached.

Further, the foregoing embodiments relate to a torsional vibration absorber device 1 with a flange 2 which is rotatable about a central axis Z storable, at least one under centrifugal force relative to the flange 2 pivotable absorber mass 3 and at least one reel device 13 , the at least one means of an absorber mass-side roller conveyor 15 and a flange-side roller conveyor 14 rollable roll 16 to guide the absorber mass 3 having at the pivoting, wherein the absorber mass 3 in the area the absorber mass side roller conveyor 15 a radially inward R inwardly projecting portion 17 having.

Moreover, the foregoing embodiments relate to a torque transmitting device 18 for a motor vehicle with at least one torsion damper 19 and at least one torsional vibration absorber device 1 according to at least one of the preceding embodiments, wherein the torsional vibration damper device 1 on an output side of the torsion damper 19 is arranged.

LIST OF REFERENCE NUMBERS

1

Drehschwingungstilgervorrichtung

2

flange

3

absorber mass

4

intermediate plate

5

rivet

6

Stop damper

7

attachment section

8th

stop section

9

back

10

front

11

page element

12

Vorvernietung

13

roller device

14

flange-side roller conveyor

15

absorber weight roller conveyor

16

role

17

inwardly projecting section

18

The torque transfer device

19

Dampers

20

primary

21

secondary side

22

takeaway

23

rivet

24

flexplate

25

Platen

A

axial direction

R

radial direction

Z

central axis

α

angle

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102009042836 A1 [0002]

Claims (10)

Torsional vibration absorber device ( 1 ) with a flange ( 2 ) which is rotatably mounted about a central axis (Z), at least one under centrifugal force relative to the flange ( 2 ) pivotable absorber mass ( 3 ) and at least one integrally formed stop damping device ( 6 ) for damping an impact of the absorber mass ( 3 ) during the pivoting, characterized in that the stop damping device ( 6 ) at least one in the axial direction (A) extending mounting portion ( 7 ), by which the stop damping device ( 6 ) on the flange ( 2 ) or at the absorber mass ( 3 ) is attached. Torsional vibration absorber device ( 1 ) according to claim 1, wherein the stop damping device ( 6 ) by the in the axial direction (A) extending mounting portion ( 7 ) at least frictionally with the flange ( 2 ) or the absorber mass ( 3 ), and in the axial direction (A) extending mounting portion ( 7 ) is preferably designed as a snap connection. Torsional vibration absorber device ( 1 ) according to claim 1 or 2, wherein the stop damping device ( 6 ) is formed of an elastic, preferably elastomeric or rubber-containing material. Torsional vibration absorber device ( 1 ) according to at least one of claims 1 to 3, wherein the stop damping device ( 6 ) at least one substantially strip-shaped abutment portion ( 8th ) having. Torsional vibration absorber device ( 1 ) according to claim 4, wherein the strip-shaped abutment portion ( 8th ) at least partially has a convex and / or concave shape. Torsional vibration absorber device ( 1 ) according to claim 4 or 5, wherein at least at each end of the strip-shaped abutment portion ( 8th ) extending in the axial direction (A) mounting portion ( 7 ) for fastening the stop damping device ( 6 ) on the flange ( 2 ) or at the absorber mass ( 3 ) is provided. Torsional vibration absorber device ( 1 ) according to at least one of claims 1 to 6, wherein the stop damping device ( 6 ) is attached flange-side, a back ( 9 ) of the stop damping device ( 6 ) in the radial direction (R) on one with the flange ( 2 ) or in one piece with the flange ( 2 ) formed page element ( 11 ), and the absorber mass ( 3 ) when pivoting with a front side ( 10 ) of the stop damping device ( 6 ) can be brought into contact. Torsional vibration absorber device ( 1 ), in particular according to at least one of claims 1 to 7, with a flange ( 2 ) which is rotatably mounted about a central axis (Z), at least one under centrifugal force relative to the flange ( 2 ) pivotable absorber mass ( 3 ) and at least one role device ( 13 ), which at least one by means of an absorber mass side roller conveyor ( 15 ) and a flange-side roller conveyor ( 14 ) rollable roll ( 16 ) for guiding the absorber mass ( 3 ) when pivoting, characterized in that the absorber mass ( 3 ) in the region of the absorber mass-side roller conveyor ( 15 ) a radially inward (R) inwardly projecting portion ( 17 ) having. Torsional vibration absorber device ( 1 ) according to claim 8, wherein the radially inwardly (R) inwardly projecting portion ( 17 ) includes an angle (α) less than 90 °, preferably between 45 ° and 85 °. Torque transmission device ( 18 ) for a motor vehicle with at least one torsion damper ( 19 ), in particular a dual-mass flywheel, and at least one torsional vibration damper device ( 1 ) according to at least one of claims 1 to 9, wherein the torsional vibration damper device ( 1 ) on an output side of the torsion damper ( 19 ), and in particular the flange ( 2 ) of the torsional vibration damper device ( 1 ) is formed as the output flange of the dual mass flywheel.

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