DE102017108742A1 - Sway control device - Google Patents

Abstract

A pendulum damping device (1), comprising: - a support (2) rotatable about an axis (X), - at least one pendulum body (3) movable with respect to the support (2), and - a first and a second rolling element cause the displacement of the pendulum body with respect to the carrier, wherein these two rolling elements both run on: - A same defined by the pendulum body Wälzbahn, and - a same defined by the carrier Wälzbahn.

Description

The present invention relates to a pendulum damping device, in particular for a motor vehicle transmission system.

In such an application, the pendulum damping device may be incorporated in a torsional damping system of a clutch which is adapted to selectively connect the internal combustion engine to the transmission to filter the vibrations caused by irregularities of the engine. Such a torsion damping system is for example a dual mass damping flywheel.

In one variant, in such an application, the pendulum damping device in a friction disc of the clutch or in a hydrodynamic torque converter or in a fixedly connected to the crankshaft of the engine of the vehicle flywheel or be installed in a dry or wet dual clutch.

Such a pendulum damping device typically employs a carrier and one or more pendulum members movable with respect to this carrier, the deflection of each pendulum member being guided with respect to the carrier by two rolling elements connected on one side to raceways fixed to the carrier and, on the other hand, to raceways , which are rotatably connected to the pendulum bodies, cooperate. Each pendulum body has, for example, two mutually riveted pendulum masses.

In certain applications, such as for vehicles called "commercial vehicles", such as heavy duty vehicles or public transport vehicles, or even agricultural vehicles, it may be desirable to increase the weight of the shuttle to improve filtering performance provided by the device , In spite of all, however, the increase in this weight is limited by the maximum contact pressure which the rolling elements which cause the displacement of this pendulum body with respect to the carrier can carry.

In addition, in certain applications it may be desirable to use pendulum bodies that are tuned to a first order value that is, for example, equal to the firing order of a 4-cylinder internal combustion engine, also referred to as "2. Order ", and about other pendulum body, which are tuned to a second order value, which is for example equal to the firing order of an 8-cylinder internal combustion engine, also referred to as« 4. Order »to dispose. It may be necessary for the pendulum bodies, tuned to the second order value, to be compact and yet guided sufficiently to effectively filter the second order value to which they are tuned.

From the registration DE 10 2015 207 738 a pendulum damping device is known in which the displacement of each pendulum body is guided with respect to the support of four rolling elements, each rolling element on a defined by the support and specially parked for this rolling element rolling and on a defined by the pendulum body and parked specifically on this rolling element Wälzbahn rolls.

It requires the improvement of provided by a pendulum damping device filter performance, especially if the weight of this device is large and / or if the available for the installation of a pendulum body peripheral space is reduced.

• – einen um eine Achse drehbeweglichen Träger,
• – mindestens einen Pendelkörper, der bezüglich des Trägers beweglich ist, und
• – ein erstes und ein zweites Wälzelement, die die Verlagerung des Pendelkörpers bezüglich des Trägers führen, wobei diese zwei Wälzelemente beide laufen auf:
• – einer gleichen durch den Pendelkörper definierten Wälzbahn, und
• – einer gleichen durch den Träger definierten Wälzbahn.

The object of the invention is to respond to this need and, according to one of its aspects, achieves this by means of a pendulum damping device which has the following:

• A support rotatable about an axis,
• - At least one pendulum body which is movable with respect to the carrier, and
• A first and a second rolling element, which guide the displacement of the pendulum body with respect to the carrier, wherein these two rolling elements both run on:
• - A same defined by the pendulum body Wälzbahn, and
• - A same defined by the carrier Wälzbahn.

According to the invention, two different rolling elements run in succession on a same rolling track defined by the pendulum body and on a same rolling track defined by the beam. Thus, the pendulum body may have a reduced circumferential dimension and be guided in its displacement with respect to the carrier but by two rolling elements.

• – «axial» bedeutet «parallel zur Rotationsachse des Trägers»,
• – «radial» bedeutet «entlang einer Achse, die in einer Ebene senkrecht zur Rotationsachse des Trägers liegt und diese Rotationsachse des Trägers schneidet»,
• – «winkelförmig» oder «zirkumferentiell» bedeutet «um die Rotationsachse des Trägers»,
• – «orthoradial» bedeutet «senkrecht zu einer Radialrichtung,
• – «fest verbunden» bedeutet «starr gekoppelt», und
• – die Ruheposition eines Pendelkörpers ist diejenige, in der dieser Pendelkörper zentrifugiert wird, ohne dass er den Torsionsschwingungen unterliegt, die von Drehungleichmäßigkeiten des Verbrennungsmotors herrühren.

For the purposes of the present application:

• - «axial» means «parallel to the axis of rotation of the beam»,
• "Radial" means "along an axis which lies in a plane perpendicular to the axis of rotation of the beam and intersects this axis of rotation of the beam",
• "Angular" or "circumferentially" means "about the axis of rotation of the beam",
• "Orthoradial" means perpendicular to a radial direction,
• - «firmly connected» means «rigidly coupled», and
• - The rest position of a pendulum body is the one in which this pendulum body is centrifuged without being subject to the torsional vibrations resulting from rotational irregularities of the internal combustion engine.

In other words, according to the invention, a same portion of a rolling track comes successively in contact with the first rolling element and the second rolling element.

According to a first exemplary embodiment of the invention, the device may have a third rolling element lying between the first and the second rolling element. The presence of this third rolling element, which lies between the first and the second rolling element, can avoid that it comes to the friction of the first rolling element against the second rolling element. In the displacement of the pendulum body, the first and the second rolling element can rotate about its axis in the direction of rotation, while the third rolling element can rotate in its opposite direction about its axis. The third rolling element rolls, for example, respectively on the first and the second rolling element.

According to this first embodiment of the invention, the rolling path defined by the pendulum body can be formed by a portion of the radially inner edge of an opening in which the three rolling elements are housed, wherein the third rolling element rolls on the radially outer edge of this opening when the first and the second rolling elements run on the rolling track defined by the pendulum body. In this case, the first and second rolling elements are then "under load" and share the contact pressure associated with the displacement of the pendulum body, which is not the case with the third circumference roller element between them. Such an arrangement of the rolling elements may allow each of these rolling elements to roll without sliding, with the first and second rolling elements sliding on each rolling track without sliding, while the third rolling element without sliding on the radially outer edge of the accommodated in the shuttle body Opening is running.

According to this first embodiment of the invention, the device may comprise a system for maintaining the positioning of the rolling elements with each other. The position in question is that in a plane perpendicular to the axis of rotation. Preferably, the positioning-holding system is also movable with respect to the carrier and the pendulum body so as to accompany the displacement of the rolling elements. This system can avoid circumference vibrations between the rolling elements, especially when the engine of the vehicle is stopped, with each of the two successive rolling elements being circumferentially in contact with each other.

The positioning holding system of the rolling elements may have a piece defining an inner casing of closed contour. The edge of this contour may define three consecutive seats, each seat having a shape that allows for receiving a rolling element and holding the latter in position with respect to the other rolling elements. As will be seen below, each rolling element may have a circular cross section in a plane perpendicular to the axis of rotation of the beam and the seat then has a circular arc shape in this plane. Optionally, certain areas of the part of the holding system may come into contact with the rolling track defined by the pendulum body.

Optionally, the holding system of the positioning of the rolling elements can be arranged axially between a part of the pendulum body and the carrier so that the axial vibrations between the part of the pendulum body and the carrier are avoided. The part defining the aforesaid housing may have an extension disposed axially between the support and the part of the pendulum body. In one variant, an additional part, different from the part defining the aforesaid housing, extends axially between the support and the part of the pendulum body, and these two parts are fixedly connected.

The extension or the additional part may be a plastic runner.

By the extension or the additional part of the axial vibrations between the carrier and pendulum body are then avoided, and thus wear and unwanted noise, especially when the carrier and / or the pendulum body are made of metal avoided.

In the absence of an extension or such additional part in the positioning support system, at least one runner may be carried by the shuttle. This runner may be plastic and may be secured to the shuttle by one or more mounting tabs mounted in one or more holes of the shuttle.

In a combination or variant with axial intermediate positioning between the carrier and a part of the pendulum body, the holding system of the positioning of the rolling elements with each other can allow axial retention of the rolling elements in the pendulum damping device. This Holding system can form stops for the axial displacement in each direction of the rolling elements. For example, the retention system includes a first wall forming an axial stop for axial displacement in a first direction of the rolling elements and a second wall forming an axial stop for axial displacement in a second direction of the rolling elements. Each rolling element can then be accommodated without axial play between the first wall and the second wall.

In a variant, the system for holding the positioning of the rolling elements with each other does not allow axial retention of these rolling elements. This axial retention of the rolling elements can then be ensured by one or more firmly connected parts of the pendulum body.

According to a second embodiment of the invention, no rolling element is arranged circumferentially between the first and the second rolling element. In contrast to the first embodiment described above, therefore, no third rolling element exists.

According to this second embodiment, the device may include a holding system for positioning the first rolling element with respect to the second rolling element. The position in question is that in a plane perpendicular to the axis of rotation. Preferably, the positioning-holding system is also movable with respect to the carrier and the pendulum body so as to accompany the displacement of the rolling elements. This system can avoid the circumferential shocks between the rolling elements and keep the first rolling element spaced from the second rolling element. The holding system of positioning the first rolling element with respect to the second rolling element may include a part defining two inner casings of closed contour. Each of these housings can receive a rolling element and hold the latter in position with respect to the other rolling element. As will be seen below, each rolling element can have a circular cross-section in a plane perpendicular to the axis of rotation of the beam, and the housing then has a circular shape in this plane.

The support system of positioning the first rolling element with respect to the second rolling element may be disposed axially between a part of the shuttle and the carrier so as to avoid the axial vibrations between the part of the shuttle and the carrier.

The part defining the aforesaid housings may have an extension disposed axially between the support and the part of the pendulum body. In one variant, an additional part different from that defining the aforesaid housings extends axially between the support and the part of the pendulum body, and these two parts are fixedly connected.

The extension or the additional part may be a plastic runner.

By the extension or the additional part of the axial vibrations between the carrier and pendulum body are then avoided, and thus wear and unwanted noise, especially when the carrier and / or the pendulum body are made of metal avoided.

In the absence of an extension or such additional part in the positioning support system, at least one runner may be carried by the shuttle. This runner may be made of plastic and may be secured to the shuttle via one or more mounting tabs mounted on one or more holes of the shuttle.

In a combination or a variant with axial intermediate positioning between the carrier and a part of the pendulum body, the holding system of the positioning of the first rolling element with respect to the second rolling element can allow axial retention of the rolling elements in the pendulum damping device. This holding system can form stops for the axial displacement in each direction of the rolling elements. For example, the retention system includes a first wall forming an axial stop for axial displacement in a first direction of the rolling elements and a second wall forming an axial stop for axial displacement in a second direction of the rolling elements. Each rolling element can then be accommodated without axial play between the first wall and the second wall.

In one variant, the holding system of the positioning of the rolling elements with each other does not allow axial retention of these rolling elements. This axial retention of the rolling elements can then be ensured by one or more firmly connected parts of the pendulum body.

According to one of the two aforementioned embodiments, the pendulum body may have a first axially arranged on a first side of the carrier pendulum mass and a second axially arranged on a second side of the carrier pendulum mass, said first and second pendulum mass are fixedly connected to each other via at least one coupling element. The coupling element may in particular be accommodated in an opening accommodated in the support, this opening in particular being formed by a window is different, in which the rolling elements are housed, which lead the displacement of the pendulum body with respect to the carrier. The coupling element is for example a rivet.

According to one of the two aforementioned embodiments, when the pendulum body has a first pendulum mass and a second pendulum mass, the rolling track defined by the pendulum body may have a first part defined by the first pendulum mass and a second part defined by the second pendulum mass, these two parts being axially offset from each other. The first and second rolling elements can then run together on the first part of this rolling track and on the second part of this rolling track.

• – einen erste überwiegend axial zwischen dem Träger und der ersten Pendelmasse angeordneten Teil, und
• – einen zweiten überwiegend axial zwischen dem Träger und der zweiten Pendelmasse angeordneten Teil.

In such a case, the positioning system of the rolling elements may be made of a plurality of parts, for example, two parts which are mutually joined. These parts are made of plastic, for example. The holding system has, for example, the following:

• - A first predominantly arranged axially between the carrier and the first pendulum mass part, and
• - A second predominantly arranged axially between the carrier and the second pendulum mass part.

In a variant, when the pendulum body has a first pendulum mass and a second pendulum mass, which are connected to each other by at least one coupling element, which defined by the carrier Wälzbahn be formed by the coupling element. A section of the contour of this coupling element defines, for example, this rolling track. In a variant, a coating may be deposited on this part of the contour of the coupling element in order to form this rolling track. Such a coupling element is pressed for example via each of its axial ends in an opening which is housed in one of the pendulum masses. In one variant, the coupling element can be welded or screwed or riveted to the pendulum masses via its axial ends.

• – die Position nach einer Verlagerung in trigonometrischer Richtung dieses Pendelkörpers aus der Ruheposition zur Filterung einer Torsionsschwingung, und/oder
• – die Position nach einer Verlagerung in nicht trigonometrischer Richtung dieses Pendelkörpers aus der Ruheposition zur Filterung einer Torsionsschwingung.

In all these cases, the pendulum damping device may comprise at least one stop-damping element of the pendulum body against the carrier in the following positions:

• - The position after a shift in the trigonometric direction of this pendulum body from the rest position for filtering a torsional vibration, and / or
• - The position after a shift in non-trigonometric direction of this pendulum body from the rest position for filtering a torsional vibration.

This stopper damping element is then carried by the pendulum body and is adapted to come in contact with the pendulum body and the carrier for all or part of the aforementioned positions of the pendulum body with respect to the carrier simultaneously.

This stopper damping element is attached, for example, to a coupling element, for example a rivet. The stopper damping element may have a ring shape. The stopper damping element may have elastic properties which allow the damping of the vibrations associated with abutment of the pendulum body against the carrier. This damping is thus made possible by a compression of the stop-damping element, the latter consisting for example of elastomer or of rubber.

In all these cases, the displacement of the pendulum body with respect to the carrier can be guided solely by the first and the second rolling element, both of which run on the same rolling track defined by the pendulum body and on a same rolling track defined by the carrier.

• – einerseits geführt durch das erste und das zweite Wälzelement, die beide auf einer gleichen durch den Pendelkörper definierten Wälzbahn und auf einer gleichen durch den Träger definierten Wälzbahn laufen, und
• – andererseits geführt durch ein viertes und ein fünftes Wälzelement, die beide auf einer gleichen anderen durch den Pendelkörper definierten Wälzbahn und auf einer gleichen anderen durch den Träger definierten Wälzbahn laufen.

In one variant, in all these cases, the displacement of the pendulum body with respect to the wearer is as follows:

• - On the one hand guided by the first and the second rolling element, both of which run on a same defined by the pendulum body Wälzbahn and on a same defined by the carrier Wälzbahn, and
• - On the other hand, guided by a fourth and a fifth rolling element, both of which run on a same other defined by the pendulum body Wälzbahn and on a same other defined by the carrier Wälzbahn.

Each rolling element is, for example, a roller with a circular cross-section in a plane perpendicular to the axis of rotation of the carrier. This roller may have several consecutive cylindrical sections of different radius. The axial ends of the roller can be without a thin annular flange. The role is made of steel, for example. The roll can be hollow or solid.

In all these cases, the center of gravity of the pendulum body with respect to the rolling elements can be arranged radially on the outside.

In all these cases, the device has, for example, a number of pendulum bodies between two and eight, in particular three, four, five or six pendulum bodies. All these pendulum bodies can follow each other circumferentially. The device can thus a variety of the Have axis of rotation perpendicular planes in which each pendulum body are arranged.

All of these pendulum bodies can then be as previously mentioned. Each pendulum body can be tuned to the firing order of a two-cylinder combustion engine, which also «1. Order, or to some other ordinal value, for example the 2nd order, or the 4th order, as previously defined.

• – eine Vielzahl von ersten Pendelkörper, wobei jeder dieser ersten Pendelkörper von dem bereits beschriebenen Pendelkörper verschieden ist, wobei dieser erste Pendelkörper durch zwei Wälzelemente geführt wird, die jeweils eine durch den Träger definierte Wälzbahn und eine durch den Pendelkörper definierte Wälzbahn aufweisen, die eigens zu diesem Wälzelement gehören, wobei jeder dieser ersten Pendelkörper auf einen ersten Ordnungswert, beispielsweise die 2. Ordnung, abgestimmt ist, und
• – eine Vielzahl von zweites Pendelkörpers, wie zuvor definiert und abgestimmt auf einen zweiten Ordnungswert, der größer ist als der erste Ordnungswert, beispielsweise die 4. Ordnung.

In a variant, the pendulum damping device has the following:

• - A plurality of first pendulum body, each of these first pendulum body is different from the already described pendulum body, said first pendulum body is guided by two rolling elements, each having a defined by the carrier Wälzbahn and defined by the pendulum body Wälzbahn, the specially to belong to this rolling element, each of these first pendulum body is tuned to a first order value, for example, the 2nd order, and
• A plurality of second pendulum bodies, as defined above, and tuned to a second order value greater than the first order value, for example, the 4th order.

In all these cases, the shape of the aforementioned first and second rolling tracks may be such that each pendulum body is displaced translationally only with respect to the carrier about a fictitious axis parallel to the axis of rotation of the carrier.

• – translatorisch um eine fiktive zur Rotationsachse des Trägers parallele Achse und
• – auch rotatorisch um den Schwerpunkt der Pendelmasse, wobei eine solche Bewegung auch «kombinierte Bewegung» genannt wird.

In a variant, the shape of the raceways may be such that each pendulum body is displaced relative to the wearer, at the same time:

• - Translational to a fictitious parallel to the axis of rotation of the support axis and
• - Also rotational about the center of gravity of the pendulum mass, whereby such a movement is also called "combined movement".

In all these cases, the carrier may be made of a single piece, for example entirely made of metal.

The invention also has the object of a component for a transmission system of a motor vehicle, wherein the component in particular a dual-mass damping flywheel, a hydrodynamic torque converter, a flywheel fixedly connected to the crankshaft or a friction clutch disc or a friction clutch disc or a dry or wet dual clutch, or a hybrid powertrain Component, or a simple wet clutch, this component having a pendulum damping device as defined above.

• – eine Flanschscheibe der Komponente,
• – eine Führungsscheibe der Komponente,
• – eine Phasenscheibe der Komponente, oder
• – ein von der Flanschscheibe, der Führungsscheibe und der Phasenscheibe unterschiedlicher Träger.

The support of the pendulum damping device can thus be one of the following:

• A flange of the component,
• A guide plate of the component,
• A phase slice of the component, or
• - One of the flange, the guide disc and the phase plate of different carriers.

The carrier may be located at the input or output of the component, with the terms "input" and "output" being defined in the direction of transmitting the engine torque of the crankshaft to the wheels of the vehicle.

In the case where the device is incorporated in a flywheel fixedly connected to the crankshaft, the carrier may be fixedly connected to this primary flywheel.

The invention may be better understood by reading the description and the subsequent non-limiting embodiments thereof, and when considering the accompanying drawings. Show it:

1 a front view of a pendulum damping device according to a first variant of a first embodiment of the invention, when the pendulum body is at rest,

2 the device of 1 after a displacement of the pendulum body for filtering a torsional vibration,

the 3 and 4 each correspond to the 1 and 2 but according to a second variant of the first embodiment of the invention,

5 an exploded view of a pendulum damping device according to a third variant of the first embodiment of the invention,

the 6 and 7 Front views of a part of the device 5 , respectively in the assembled state, when the pendulum bodies are at rest, and after a displacement of these pendulums to filter a torsional vibration,

8th an exploded view of a pendulum damping device according to a fourth variant of the first embodiment of the invention,

9 an exploded view of a pendulum damping device according to a second embodiment of the invention,

the 10 and 11 both a same part of the device of 9 in the assembled state and when the pendulum bodies are at rest, with certain elements of this part of the device not in the 10 are shown, and

12 the part of 11 after a displacement of the pendulum body for filtering a torsional vibration.

In the 1 and 2 is a pendulum damping device 1 illustrated according to a first variant of a first embodiment of the invention.

This device 1 is here for installation in a friction clutch disc, for example, combined with an internal combustion engine, in particular a two-, three- or four-cylinder engine determined.

• – einen Träger 2, der zur Drehbewegung um eine Achse X ausgelegt ist, und
• – eine Vielzahl von bezüglich des Trägers 2 beweglichen Pendelkörpern 3.

The pendulum damping device 1 has the following in the considered example

• - a carrier 2 , which is designed for rotational movement about an axis X, and
• - a variety of respect to the carrier 2 movable pendulum bodies 3 ,

The carrier 2 is for example intended for welding to the hub of the friction clutch disc. In the example considered are three pendulum bodies 3 provided, which are evenly distributed around the axis X around.

The carrier 2 is here realized in one piece, with a plate shape extending between two substantially parallel sides 4 extends.

• – zwei Pendelmassen 5, wobei eine dieser Pendelmassen 5 eine erste Pendelmasse 5 ist, die axial auf einer ersten Seite 4 des Trägers angeordnet ist, wobei die andere dieser Pendelmassen 5 eine zweite Pendelmasse 5 ist, die axial auf einer zweiten Seite 4 des Trägers 2 angeordnet ist, und
• – drei Kopplungselemente 6, die die zwei Pendelmassen 5 fest verbinden.

As in the 1 and 2 can be seen, each pendulum body 3 in the example considered:

• - two pendulum masses 5 , where one of these pendulum masses 5 a first pendulum mass 5 which is axially on a first side 4 the carrier is arranged, wherein the other of these pendulum masses 5 a second pendulum mass 5 is that on a second side axially 4 of the carrier 2 is arranged, and
• - three coupling elements 6 that the two pendulum masses 5 firmly connect.

The coupling elements 6 , also called "spacers" are formed in the example by riveting. Two rivets 6 are positioned at an equal diameter and circumferentially consecutive while a third rivet 6 concerning these two rivets 6 is positioned radially inward. The two rivets arranged on the same diameter 6 are here in an opening 28 taken in the radially outer edge of the carrier 2 is housed, with this opening 28 has an open contour. The third rivet 6 Here is essentially radial with the two other rivets 6 aligned, passing through this third rivet radials substantially halfway between the two other rivets 6 , which lie on an equal diameter, runs.

As in the 1 and 2 can be seen, here each pendulum body 3 Stop-damping elements 7 of the pendulum body 3 against carriers 2 on. It is for example a part of rubber or elastomer. One and the same stopper damping element 7 is here with two rivets 6 of the pendulum body 3 combined, which are positioned on an equal diameter, with each rivet 6 for example, in an inside of this stopper damping element 7 accommodated accommodated cavity. Another stop cushioning element 7 is with the radially inward of the other rivets 6 positioned rivets 6 combined. The at least one of these stopper damping elements 7 comes between a rivet 6 and an edge of the carrier 2 to lie, either after the displacement of this pendulum body 3 from your rest position to filter a torsional vibration, or in the case of radial dropping of this pendulum body, for example when stopping the engine of the vehicle.

To the displacement of a pendulum body 3 concerning the vehicle 2 to guide it to filter a torsional vibration defines this pendulum body in the example of 1 and 2 a single Wälzbahn 22 which is in two parts. The first or the second part of this Wälzbahn 22 is from the radially inner edge of one in the first and second pendulum mass 5 accommodated opening 21 educated. Still with the goal of guiding the displacement of the pendulum body 3 concerning the vehicle 2 to filter a torsional vibration, the wearer defines 2 in this example, a single Wälzbahn 20 , especially for this pendulum body 3 heard from the radially outer edge of one in the carrier 2 housed window 19 is formed.

As in the 1 and 2 shown, each part of the Wälzbahn 22 a concave shape and the Wälzbahn 20 a convex shape.

In the 1 and 2 it is found that no rivets 6 in the carrier 2 housed windows 19 is included. The two rivets lying on the same diameter 6 are, as already mentioned, in an opening 28 not included with the window 19 communicates while the radially inner rivet 6 in a respect to the window 19 radially inward and not associated with this opening 25 is included.

Rolling elements are at the same time in the in the carrier 2 housed windows 19 and in each in a pendulum mass 5 accommodated opening 21 added.

In the example of 1 and 2 are three rolling elements with a same pendulum body 3 combined. A first and a second rolling element 11 frame circumferentially a third rolling element 12 one.

As in the 1 and 2 5, which respectively represent the pendulum bodies at rest, that is, when they do not filter the torsional vibrations transmitted from the drive system due to the irregularities of the internal combustion engine, and after a displacement from this rest position when such a torsional vibration occurs, the rolling elements 11 on the one hand and the rolling element 12 on the other hand different functions.

• – einerseits auf der Wälzbahn 22, von der ein erster Teil durch die erste Pendelmasse 5 des ersten Pendelkörpers 3 definiert ist und von der ein zweiter Teil durch die zweite Pendelmasse 5 dieses Pendelkörpers 3 definiert ist, und
• – andererseits auf der Wälzbahn 20, die durch den radial äußeren Rand des Fensters 19 definiert ist.

With a displacement of the pendulum body 3 , the rolling elements are running 11 each:

• - On the one hand on the Wälzbahn 22 , of which a first part by the first pendulum mass 5 of the first pendulum body 3 is defined and from the second part by the second pendulum mass 5 this pendulum body 3 is defined, and
• - On the other hand on the Wälzbahn 20 passing through the radially outer edge of the window 19 is defined.

In such a shift runs the third rolling element 12 , which is circumscribed between the rolling elements 11 is positioned, on the one hand on each rolling element 12 and on the other hand on the radially outer edge 23 every opening 21 , The third rolling element 12 therefore does not come here with the by the pendulum body 3 defined rolling track 22 and with that by the wearer 2 defined rolling track 20 in contact. The third rolling element 12 arranges itself in the course of the displacement of the pendulum body 3 concerning the vehicle 2 between the rolling elements 11 and runs on each one of these. During this displacement, the rolling elements rotate 11 in the same direction about their respective axis, while the rolling element 12 turns around its axis in the opposite direction.

Although not in the 1 and 2 shown, axial holding means of the rolling elements 11 and 12 on the pendulum body 3 be provided. These holding devices are for example of a plate 35 formed at the pendulum mass 5 is mounted and a stop for the axial displacement in one direction of the rolling elements 11 and 12 forms.

Although not in the 1 and 2 shown, can each pendulum mass 5 an axial Zwischenpositionierungskufe 30 bear that between the corresponding pendulum mass 5 and the page 4 of the carrier 2 opposite this pendulum mass 5 is arranged to absorb the axial vibrations between this pendulum mass 5 and the carrier 2 to dampen.

Now, referring to the 3 and 4 a pendulum damping device 1 described according to a second variant of the first embodiment of the invention.

The device according to this second variant differs in principle from those described above in that the coupling elements 6 that is the first pendulum mass 5 and the second pendulum mass 5 of the pendulum body 3 connect, are designed differently.

If these coupling elements 6 still are rivets, so their positioning is different. They are essentially two rivets 6 on an equal diameter at each circumferential end of the pendulum body 3 arranged. Each of these rivets 6 is in an opening 25 taken, with the window 19 Circumferentially between the two openings 25 was added without connection to these. A third rivet 6 is radially inside the pendulum body 3 positioned and extends, as already mentioned, in a radially outer edge of the carrier 2 accommodated opening 28 , In the 3 and 4 it is also found that skids 30 are provided. In this example, three runners 30 from each pendulum mass 5 of every pendulum body 3 carried. A stopper damping element 7 is for example for every rivet 6 intended. If necessary, the third rivet is missing 6 such a stopper damping element 7 ,

With reference to the 5 to 7 now becomes a pendulum damping device 1 according to a third variant of the first embodiment of the invention.

• – ein erstes überwiegend axial zwischen dem Träger 2 und der ersten Pendelmasse 5 angeordnetes Teil, und
• – ein zweites überwiegend axial zwischen dem Träger 2 und der zweiten Pendelmasse 5 angeordnetes Teil.

This third variant shows again the arrangement of rivets 6 the second variant. According to this third variant, the pendulum damping device 1 a holding system 41 for mutual positioning of the rolling elements 11 and 12 on. This holding in position takes place here in the axis of rotation X of the carrier 2 vertical planes. The holding system 41 is in the example of 5 to 7 made of two distinct parts joined together. These parts are made of plastic, for example. The holding system 41 then has the following in the example described:

• - A first mainly axially between the carrier 2 and the first pendulum mass 5 arranged part, and
• - A second predominantly axially between the carrier 2 and the second pendulum mass 5 arranged part.

The holding system 41 for positioning the rolling elements 11 and 12 is at the same time with respect to the carrier 2 and with respect to the pendulum body 3 whose displacement these rolling elements 11 and 12 lead, movable.

This holding system 41 allows avoiding the circumference vibrations between the rolling elements and thereby the mutual contacting of the pairwise circumferentially successive rolling elements.

It is found that every part of the holding system 41 in the considered variant, an inner housing 42 defined with closed contour. The edge of the contour of this case 42 defines three consecutive seats, each seat having a shape that allows for receiving a rolling element and holding the latter in position with respect to the other rolling elements. Each rolling element 11 or 12 has here a circular cross section and each seat has in the plane of the figures on a circular arc shape, which allows the holding of the corresponding positioned rolling element and thereby rotating this rolling element about its axis.

In the example of 5 to 7 indicates each part of the holding system 41 an extension 42 on, the axially between the carrier 2 and the pendulum mass 5 is arranged, between which it predominantly extends. This extension 42 is here with the part of the holding system 41 integrally. This extension 42 acts in the example described as completion of the runners 30 here still from the pendulum masses 5 be worn. Part of a part of the holding system 41 can with the by the carrier 2 defined rolling track 20 get in touch.

With reference to 8th Now, a Torsionsschwingungsdämpfungsvorrichtung will be described according to a fourth variant of the first embodiment of the invention.

According to this fourth variant, the rivets 6 arranged as in the first variant. The device 1 still has a holding system 41 for mutual positioning of the rolling elements 11 and 12 on. To further avoid the axial vibrations between the carrier 2 and pendulum masses 5 by the presence of extensions 42 it is, as already with reference to the 5 to 7 described by the holding system 41 of the 8th also possible according to this fourth variant, these rolling elements 11 and 12 axially on the pendulum damping device 1 to keep.

In the example of 8th forms the holding system 41 Stops for the axial displacement in each direction of the rolling elements 11 and 12 out. The one of the parts of the holding system 41 forms a wall in the example described 43 consisting of an axial stop for the axial displacement in a first direction of the rolling elements 11 and 12 defined, and the other part of the parts of the holding system 41 forms a second wall 43 consisting of an axial stop for the axial displacement in a second direction of the rolling elements 11 and 12 Are defined. Each rolling element is thus, for example, without axial play between the first wall 43 and the second wall 43 added. It is then no longer necessary on the plates 35 which ensure this function in the third variant, such as in 5 shown. In the example of 8th can the number of pendulum bodies 3 from the one of 1 to 7 to be different.

With reference to the 9 to 12 now becomes a pendulum damping device 1 described according to a second embodiment of the invention. According to this second example, a first and a second rolling element lead 11 the displacement of the pendulum body 3 concerning the vehicle 2 , and these rolling elements still run on a same through the carrier 2 defined rolling track 20 and on every part of one by the pendulum body 3 defined rolling track 22 , Unlike the first embodiment of the invention, there is no third circumference between these two rolling elements 11 arranged rolling element 12 ,

In the example of 9 to 12 is the arrangement of rivets 6 the same as that according to the second and third variants of the first embodiment of the invention.

In 9 become two so joined together parts 41 found that a holding system 41 the positioning of the first rolling element 11 with respect to the second rolling element 11 is formed. This holding is again in a direction perpendicular to the axis of rotation X level. Just as with reference to the 5 to 8th described is the position holding system 41 at the same time with respect to the carrier 2 and the pendulum body 3 so mobile that it is the displacement of the rolling elements 11 accompanied.

In particular from the 10 and 11 shows that the holding system 41 here two inner housing 42 defined with closed contour, with one of these inner housing 42 the first rolling element 11 while the other of this inner casing 42 the second rolling element 11 receives. The presence of the retention system 41 allows to avoid the first rolling element 11 against the second rolling element 11 comes to friction.

In the 10 to 12 It is also found that every part of the position holding system 41 an extension 42 which is axially between the carrier 2 and the pendulum mass 5 is arranged, between which it predominantly extends.

In the example of 9 to 12 are plates 35 provided for axially holding the first and the second rolling element 11 on the pendulum body 3 sure.

In a variant, not shown, this axial holding by walls 43 from every part of the holding system 41 the same as in the first embodiment of the invention with reference to 8th described, can be obtained.

The invention is not limited to the embodiments described above.

• – Merkmale, die unter Bezugnahme auf eine andere Variante dieses ersten Ausführungsbeispiel der Erfindung beschrieben werden, oder
• – Merkmale, die unter Bezugnahme auf das zweite Ausführungsbeispiel der Erfindung beschrieben werden.

For example, features may be combined that are described with reference to one of the variants of the first embodiment of the invention, namely:

• Features described with reference to another variant of this first embodiment of the invention, or
• Features described with reference to the second embodiment of the invention.

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 102015207738 [0007]

Claims (10)

Pendulum damping device ( 1 ), comprising: - a carrier rotatable about an axis (X) ( 2 ), - at least one pendulum body ( 3 ) relating to the carrier ( 2 ), and - a first and a second rolling element, which guide the displacement of the pendulum body with respect to the support, these two rolling elements both running on: - a same rolling track defined by the pendulum body, and - a same rolling track defined by the support. Apparatus according to claim 1, comprising a third rolling element ( 12 ) between the first and the second rolling element ( 11 ). Device according to claim 2, characterized in that by the pendulum body ( 3 ) defined rolling track ( 22 ) through a portion of the radially inner edge of an opening ( 21 ) is formed, in which the three rolling elements ( 11 . 12 ) are housed, wherein the third rolling element ( 13 ) on the radially outer edge ( 23 ) of this opening ( 21 ) runs when the first and the second rolling element ( 11 ) on the by the pendulum body ( 3 ) defined rolling track ( 22 ) to run. Device according to one of claims 2 or 3, comprising a system ( 41 ) for holding the positioning of the rolling elements ( 11 . 12 ) among themselves. Apparatus according to claim 4, wherein the system ( 41 ) for holding the positioning of the rolling elements ( 11 . 12 ) axially between a section ( 5 ) of the pendulum body ( 3 ) and the carrier ( 2 ) is arranged so that the axial vibrations between the part of the pendulum body and the carrier are avoided, and / or the system ( 41 ) for holding the positioning of the rolling elements ( 11 . 12 ) with each other also an axial holding of the rolling elements ( 11 . 12 ) in the pendulum damping device ( 1 ). Device according to claim 1, wherein no rolling element is distributed circumferentially between the first and the second rolling element ( 11 ) is arranged. Apparatus according to claim 6, comprising a system ( 41 ) for holding the positioning of the first rolling element ( 11 ) with respect to the second rolling element ( 11 ). Apparatus according to claim 7, wherein the system ( 41 ) for holding the positioning of the first rolling element with respect to the second rolling element axially between a portion (FIG. 5 ) of the pendulum body ( 3 ) and the carrier ( 2 ) is arranged so that the axial vibrations between the section ( 5 ) of the pendulum body and the carrier ( 2 ) and / or the system ( 41 ) for holding the positioning of the first rolling element ( 11 ) with respect to the second rolling element ( 11 ) also axially holding this first and second rolling element in the pendulum damping device ( 1 ). Device according to one of the preceding claims, wherein the pendulum body ( 3 ) a first axially on a first side ( 4 ) of the carrier ( 2 ) arranged pendulum mass ( 5 ) and a second axially on a second side ( 4 ) of the carrier arranged pendulum mass ( 5 ), these first and second pendulum masses ( 5 ) via at least one coupling element ( 6 ) are fixedly connected to each other, wherein the coupling element ( 6 ) in particular in one in the carrier ( 2 ) ( 25 . 28 ), this opening ( 25 . 28 ) especially from a window ( 19 ) is different, in which the rolling elements ( 11 ) are housed. Device according to one of the preceding claims, wherein the displacement of the pendulum body ( 3 ) with regard to the carrier ( 2 ) only by the first ( 11 ) and the second ( 11 ) Rolling element is guided, both on a same by the pendulum body ( 3 ) defined rolling track ( 22 ) and on a same by the carrier ( 2 ) defined rolling track ( 20 ), or wherein the displacement of the pendulum body ( 3 ) with regard to the carrier ( 2 ) is as follows: - guided on the one hand by the first and the second rolling element ( 11 ), both on a same by the pendulum body ( 3 ) defined rolling track ( 22 ) and on a same the carrier ( 2 ) defined rolling track ( 20 ), and - guided on the other hand by a fourth and a fifth rolling element ( 11 ), both of which run on another equal rolling track defined by the pendulum body and on another same rolling track defined by the shuttle.

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