DE102017108465A1 - Sway control device - Google Patents

Abstract

Pendulum damping device (1), comprising: - at least one support (2) designed to rotate about an axis (X), - at least one pendulum body (3) movable relative to the support (2), and - at least one between the pendulum body (3) and the friction system (30) inserted in the support (2) for all or part of the relative positions of the pendulum body (3) relative to the support (2) such that in these positions the displacement of the pendulum body (3) with respect to the support (2) is braked.

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.

It is known to choose the damping device, for example via the shape of the raceways, such that the latter, the firing order of a two-cylinder internal combustion engine of the vehicle, which also «1. Order is known, the firing order of an internal combustion engine is known to be the number of explosions of this engine per crankshaft revolution. Such devices are very sensitive to gravity, the latter causing undesirable deflections of the pendulum bodies and therefore may affect filter performance.

To remedy this problem, it is for example from the patent DE 10 2012 221 103 known to provide springs between two circumferentially adjacent pendulum bodies, such that the thus coupled pendulum body of the force exerted thereon per revolution gravity resist when the device is placed in a rotational movement. The incorporation of these springs requires the provision of additional spaces in the pendulum bodies or the provision of appropriate fixation means on these pendulum bodies, which is expensive and expensive. By installing the springs also occurs an additional resonant frequency.

The incorporation of the springs may also require the provision of open cut-outs in the support of the device which will then reduce the deflection of the pendulum bodies. Furthermore, it is necessary to correctly dimension the springs, and the maintenance of the characteristics of the springs with time is not guaranteed.

The invention has for its object to reduce the influence of gravity on the pendulum body, especially if they have the aim to filter the firing order of a two-cylinder internal combustion engine of the vehicle, and thereby to solve all or part of the above shortcomings.

• – mindestens einen Träger, der zur Drehbewegung um eine Achse ausgelegt ist,
• – mindestens einen bezüglich des Trägers beweglichen Pendelkörper, und
• – mindestens ein zwischen dem Pendelkörper und dem Träger eingesetztes Reibsystem für alle oder einen Teil der relativen Positionen des Pendelkörpers bezüglich des Trägers, derart, dass in diesen Positionen die Verlagerung des Pendelkörpers bezüglich des Trägers gebremst wird.

The invention solves this, according to one of its aspects, by means of a pendulum damping device which has the following:

• At least one support designed to rotate about an axis,
• - At least one with respect to the carrier movable pendulum body, and
• At least one friction system inserted between the pendulum body and the support for all or part of the relative positions of the pendulum body with respect to the support such that in these positions the displacement of the pendulum body with respect to the support is braked.

For example, the friction system is located between the shuttle and the carrier for any relative position of the shuttle relative to the carrier, i. H. that it permanently generates friction between the pendulum body and the carrier.

The friction system according to the invention enables the decelerated displacement of the pendulum body caused by gravity, and thus the friction system makes it possible to reduce this displacement and, consequently, to avoid gravity being a part of the displacement of the pendulum body originally intended to filter the torsional vibrations consumes.

The friction is preferably exerted between the carrier and the pendulum body without the aid of rolling element (s) which guide the displacement with respect to the carrier of this pendulum body.

The friction may be axial friction, i. H. be a friction exerted between axially opposite surfaces. In one variant, the friction may be a radial friction, i. H. be a friction exerted between axially opposite surfaces.

• – «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 der Dämpfungsvorrichtung ist diejenige, in der ihre Pendelkörper zentrifugiert werden, ohne den aus Ungleichmäßigkeiten des Verbrennungsmotors herrührenden Torsionsschwingungen zu unterliegen.

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 the damping device is the one in which their pendulum bodies are centrifuged without being subject to torsional vibrations resulting from irregularities of the internal combustion engine.

According to a first embodiment of the invention, the friction system comprises a weight carried by the carrier and contacting the shuttle for all or part of the relative positions. The weight can thus come into contact with the radially inner edge of the pendulum body. The weight may thus, due to gravity, inboard of the radial displacement of the pendulum body, this displacement of the pendulum body occurring in particular when the motor of the vehicle stops or in the absence of such stopping of the motor, in particular if the pendulum body for filter 1. Order is configured, as already mentioned above.

According to the first embodiment of the invention, the friction used may be a radial friction.

The weight may be mounted on the carrier so as to be rotatable about an axis parallel to the axis of rotation of the carrier. In this case, the surface of the weight coming into contact with the pendulum body may be a cylinder part. The fact that the weight is rotatably mounted on the support may allow contact from one contact to the other with the pendulum body not to affect the same area of the cylinder part of the weight that ensures such contact, so that premature wear of a Area of the cylinder part is avoided. Still according to the first embodiment of the invention, the weight may be mounted on the carrier so that it is subjected to a particular radially oriented elastic restoring force exerted by the carrier, this elastic restoring force being the weight for all or part of the relative positions Keeps pendulum body in contact. The presence of this elastic restoring force can thus resist the displacement of the pendulum body due to gravity and thus reduce the effect of gravity.

The elastic restoring force is exerted, for example, on a surface of the weight which is axially offset with respect to the surface of the weight which comes into contact with the pendulum body. In one example, the surface of the weight to which the elastic restoring force is applied is a cylinder portion having a first radius, and the surface of the weight contacting the pendulum body is a cylinder portion having a second radius, these radii being different and these cylinder sections are axially offset.

The elastic restoring force can be secured by an elastic spring strip which is deformably received in an opening accommodated in the carrier. This spring strip is made of steel, for example of Elinvar steel, of copper, for example of beryllium copper, for example. The spring strip may be made to have an elastic limit of 1000 MPa.

The spring strip can deform in this opening, in particular radially, when the weight comes into contact with the pendulum body to exert on the weight of the elastic restoring force.

The spring strip can define a closed contour, i. H. that it extends 360 ° around an axis. In a variant, the spring strip may define an open contour having two spaced apart ends.

In the absence of the pendulum body on the weight of the spring strip can cooperate at all points with the edge of the opening in which it is received. In a variant, in the absence of the pendulum body resting on the weight, the spring strip may come into contact with the edge of the aperture in which it is received at some points and may be spaced at other points from the edge of that aperture.

The spring strip may require deformation as it is inserted into the opening, such that it resumes its original shape as soon as it is in the opening. The spring strip can then be mounted captive in the opening.

The spring strip can hold the weight axially in place.

In a variant of this first embodiment of the invention, the friction system is through formed an elastically deformable spring strip carried by the carrier. This spring strip can come into direct contact with the pendulum body, in contrast to the previously described case, which required the presence of a weight between the spring strip and the pendulum body.

The spring strip according to this variant can, according to a first case, define a closed contour, i. H. that it extends 360 ° about an axis, or it may define an open contour having two spaced ends.

According to the first case of this variant, the spring strip may be received in an opening radially housed in the support, the position of this opening allowing the spring strip to contact the radially inner edge of the pendulum body.

• – an allen Punkten mit dem Rand der Öffnung, in der er aufgenommen ist, zusammenwirken, oder
• – an einigen Punkten mit dem Rand der Öffnung, in der er aufgenommen ist, in Kontakt kommen und an anderen Punkten vom Rand dieser Öffnung beabstandet sein.

In the absence of the pendulum body resting on the spring strip, the spring strip according to the first case of this variant can:

• - cooperate at all points with the edge of the opening in which it is received, or
• - come into contact with the edge of the aperture in which it is received at some points and be spaced at other points from the edge of this aperture.

The spring strip according to the first case of this variant may require a deformation when it is inserted into the opening, so that it assumes its original shape once it is in the opening. The spring strip can then be mounted captive in the opening.

The spring strip according to this variant can, according to a second case, define an open contour and be attached to the carrier, for example by means of screws, rivets, welding. The spring strip can then be positioned on the carrier so that it comes into contact with an axial side of the pendulum body. The spring strip can allow the exercise of axial friction. Several spring strips can follow each other circumferentially. Each spring strip may be common to two circumferentially adjacent pendulum bodies.

According to a second embodiment of the invention, the friction system may comprise at least one rigid arm carried by the pendulum body, said rigid arm for all or part of the relative positions of the pendulum body with respect to the carrier for friction against a surface of the carrier. For example, the rigid arm against the carrier for all positions of the pendulum body relative to the carrier for friction comes. The rigid arm is made, for example, with all or part of the pendulum body from a single piece. In a variant, the rigid arm is attached to the pendulum body so that it is firmly connected to the latter. In yet another variant, the rigid arm is mounted to the pendulum body with rotation capability about an axis parallel to the axis of rotation of the carrier. The attachment of the rigid arm on the pendulum body can then take place in this case via pins of this arm, which are received in holes of the pendulum body. This attachment may allow the rotation of the rigid arm with respect to the pendulum body. The friction system according to this second embodiment may allow the exercise of a radial friction.

According to this second embodiment of the invention, the surface of the carrier against which the arm is frictional may define a path which extends circumferentially and occupies radial distinct positions. In other words, this surface of the carrier can not define a circle in a plane perpendicular to the rotation axis of the carrier.

According to the first or second embodiment, supra, the pendulum damping device may have another pendulum body circumferentially adjacent to the pendulum body, the friction system being common to these two circumferentially adjacent pendulum bodies.

According to the first embodiment, the weight or elastic spring strip can thus come into contact with these two circumferentially adjacent pendulum bodies.

According to the second embodiment, the rigid arm may be fixedly connected to one of these pendulum members and rest on the other of these pendulum members. The rigid arm may then be fixed relative to a pendulum body and may slide on the other of these pendulum bodies. Such a two circumferentially adjacent pendulum body common friction system may allow maintenance of a minimum distance therebetween. This avoids vibrations between circumferentially adjacent pendulum bodies. According to the second embodiment and in a variant, when two circumferentially adjacent pendulum bodies are provided, each pendulum body may have a rigid arm, and these rigid arms may be adapted to contact each other so as to maintain a minimum distance therebetween becomes.

According to a third embodiment of the invention, the friction system has a weight which is supported by the pendulum body and with the wearer comes into contact with all or part of the relative positions.

According to this third embodiment, the weight may be mounted on the pendulum body so that it is translationally movable with respect to this pendulum body. During the displacement of the pendulum body, the weight can shift with respect to this pendulum body, in particular radially, in order to remain in contact with the carrier. With the exception of this linear translational displacement of the weight relative to the pendulum body, any displacement of the pendulum body with respect to the support may result in a displacement of the weight relative to the support such that the friction exerted by the support on the weight will slow the displacement of the pendulum body relative to the support ,

The weight comes into contact, for example, with a surface of the carrier whose distance to the axis of rotation of the carrier, with circumferential displacement, varies or remains constant. In the case where the surface of the carrier with which the weight comes into contact is at a distance from the axis of rotation of the carrier which, at circumferential displacement, is constant, the frictional force exerted by the carrier, regardless of the relative position of the shuttle, can of the wearer, stay constant. In the case where the surface of the carrier with which the weight comes into contact is at a distance from the axis of rotation of the carrier which, at circumferential displacement, is not constant, the frictional force exerted by the carrier may vary with respect to the position of the shuttle vary the carrier.

In all these cases, the displacement of the pendulum body relative to the carrier can be guided by at least one rolling element, the latter cooperating on the one hand with at least one first roller track fixedly connected to the carrier and on the other hand with at least one second roller track firmly connected to the pendulum body.

• – eine erste axial auf einer ersten Seite des Trägers angeordnete Pendelmasse,
• – eine zweite axial auf einer zweiten Seite des Trägers angeordnete Pendelmasse, und
• – mindestens ein Kopplungselement, das die erste und die zweite Pendelmasse fest verbindet,

wobei das Reibsystem für alle oder einen Teil der relativen Positionen des Pendelkörpers bezüglich des Trägers zwischen dem Kopplungselement und dem Träger so eingefügt ist, dass die Verlagerung des Pendelkörpers bezüglich des Trägers in diesen Positionen gebremst wird.According to one or the other of the two embodiments, the pendulum body may comprise:

• A first pendulum mass arranged axially on a first side of the carrier,
• - A second axially disposed on a second side of the carrier pendulum mass, and
• At least one coupling element which firmly connects the first and the second pendulum mass,

wherein the friction system for all or part of the relative positions of the pendulum body with respect to the carrier between the coupling element and the carrier is inserted so that the displacement of the pendulum body is braked with respect to the carrier in these positions.

• – einen ersten Zylinderabschnitt mit zweitem Radius, der mit der ersten Pendelmasse des Pendelkörpers in Kontakt kommt,
• – einen Zylinderabschnitt mit erstem, von dem zweiten Radius verschiedenen Radius, auf den die elastische Rückstellkraft ausgeübt wird, und
• – einen zweiten Zylinderabschnitt mit zweitem Radius, der mit der zweiten Pendelmasse des Pendelkörpers in Kontakt kommt.

With such a pendulum body, which has two pendulum masses each arranged axially laterally of the carrier, the weight of the friction system according to the first exemplary embodiment of the invention can have the following:

• A first cylinder section of a second radius, which comes into contact with the first pendulum mass of the pendulum body,
• A cylinder portion having a first radius different from the second radius and to which the elastic restoring force is exerted, and
• A second cylinder portion of second radius coming into contact with the second pendulum mass of the pendulum body.

The first second radius cylinder portion, the first radius cylinder portion, and the second second radius cylinder portion may follow each other axially in this order.

• – einen ersten Teil, der mit der ersten Pendelmasse des Pendelkörpers in Kontakt kommt,
• – einen zweiten Teil, der in dem Träger axial aufgenommen ist, und
• – eine dritten Teil, der mit der zweiten Pendelmasse des Pendelkörpers in Kontakt kommt.

In the variant of the first embodiment in which an elastically deformable spring strip without intermediate positioning of a weight is used, this spring strip may comprise:

• A first part which comes into contact with the first pendulum mass of the pendulum body,
• A second part received axially in the carrier, and
• - A third part, which comes into contact with the second pendulum mass of the pendulum body.

The first part, the second part and the third part can follow each other axially in this order.

According to the second embodiment of the invention, the rigid arm may be fixed to a coupling member of the pendulum body with or without the possibility of relative displacement.

According to the third embodiment of the invention, the weight may extend axially such that it is accommodated on the one hand in an opening accommodated in the first pendulum mass, on the other hand is received in the axial dimension of the carrier and on the other hand in an opening accommodated in the second pendulum mass. The displacement of this weight relative to the pendulum body can be accomplished by sliding this weight in each aperture thus accommodated in the first and second pendulum masses.

The surface of the carrier with which the weight comes into contact, according to this third embodiment of the invention, the radially outer edge of a housed in the carrier and the Be rolling element and / or the coupling element receiving window.

According to one or the other of the aforementioned embodiments, in a first preferred embodiment, the rolling element may cooperate with a single first rolling track and with a single second rolling track, and this second rolling track is defined by the coupling element of the pendulum body. A part of the contour of this coupling element defines, for example, the second rolling track. In a variant, a coating may be deposited on this part of the contour of the coupling element in order to form the second 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.

According to the first preferred embodiment, the displacement of each pendulum body with respect to the carrier by at least two rolling elements, in particular exactly two rolling elements, are performed. Two coupling elements, each cooperating with a rolling element, can be provided.

Accordingly, each rolling element can be solely pressurized between the above-mentioned first and second races. These first and second Wälzbahn, which cooperate with a same rolling elements may be at least partially facing each other radially, d. H. that planes are perpendicular to the axis of rotation, in which these Wälzbahnen both extend.

According to the first preferred embodiment, each rolling element may be received in a window of the carrier, which already accommodates a coupling element and no other rolling element. This window is defined, for example, by a closed contour, one part of which defines the first rolling track fixedly connected to the carrier, which cooperates with this rolling element. A part of the contour of this window is, according to the third aforementioned embodiment, to the weight of the friction system. In a variant, according to the first preferred embodiment, two rolling elements which guide the displacement of one and the same pendulum body can be accommodated in one and the same window accommodated in the support.

According to one or the other of the above-described embodiments and whenever the shuttle has a first pendulum mass and a second pendulum mass, but according to a second preferred embodiment, the rolling element acts on the one hand with a single first Wälzbahn firmly connected to the carrier and on the other with two second together with the pendulum body firmly connected Wälzbahnen together. Each pendulum mass accordingly has an opening, one part of the contour of which defines one of these second rolling paths.

According to this second preferred embodiment, each coupling element comprises, for example, a plurality of rivets, and this coupling element is received in a window of the carrier, while the rolling element is received in an opening of the carrier, which is different from a window which receives a coupling element.

According to the second preferred embodiment, two rolling elements can cause the displacement of the pendulum body with respect to the carrier and each rolling element can cooperate with a first parked specifically for this rolling element rolling track this and with two second parked specifically for this rolling element Wälzbahnen.

• – einen Teil, der in einer Öffnung der ersten Pendelmasse angeordnet ist und mit der zweiten durch einen Teil der Kontur dieser Öffnung gebildeten Wälzbahn zusammenwirkt,
• – einen Teil, der in einer Öffnung des Trägers angeordnet ist und mit der ersten durch einen Teil der Kontur dieser Öffnung gebildeten Wälzbahn zusammenwirkt, und
• – einen Teil, der in einer Öffnung der zweiten Pendelmasse angeordnet ist und mit der zweiten durch einen Teil der Kontur dieser Öffnung gebildeten Wälzbahn zusammenwirkt.

Thus, according to this second preferred embodiment, each rolling element can have one after the other axially:

• A part which is arranged in an opening of the first pendulum mass and cooperates with the second rolling track formed by a part of the contour of this opening,
• - A part which is arranged in an opening of the carrier and cooperating with the first formed by a part of the contour of this opening Wälzbahn, and
• - A part which is arranged in an opening of the second pendulum mass and cooperates with the second formed by a part of the contour of this opening Wälzbahn.

• – 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 abutment damping element is then carried by the pendulum body and is adapted for all or part of the aforesaid relative positions of the pendulum body with respect to of the carrier to come into contact with the pendulum body and the carrier at the same time.

Each stop damping element may be assigned to a coupling element of the pendulum body, if the latter has two pendulum masses connected to each other via such a connecting element. Each stop-damping element may have elastic properties that allow the damping of the vibrations associated with the impact 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, at least one of the carrier and the pendulum mass can carry at least one axial intermediate piece, wherein this axial intermediate piece is in particular a coating deposited on the carrier or the pendulum mass. In one variant, the axial intermediate piece may be a runner carried by the carrier or the pendulum mass. This runner may be plastic and may be coupled to the carrier or shuttle via one or more attachment tabs mounted in one or more holes of the carrier or shuttle. Such an intermediate piece can then limit the axial displacement of the pendulum mass with respect to the carrier, thus avoiding the axial vibrations between the pieces and thus a closure and unwanted noise, in particular if the carrier and / or the pendulum mass are made of metal.

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 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 have a plurality of planes perpendicular to the axis of rotation, in each of which all pendulum bodies are arranged.

If a plurality of pendulum bodies are provided, a friction system according to one of the aforementioned embodiments may be dedicated to each of these pendulum bodies, or may, as already mentioned, two circumferentially adjacent pendulum bodies belong together.

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 deflected 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".

Each pendulum body can be tuned to the firing order of a two-cylinder internal combustion engine, which also «1. Order »is called.

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, and the terms "input" and "output" may be evaluated in the direction of transmitting the engine torque of the crankshaft to the wheels of the vehicle.

In the case where the device is installed in a flywheel integral with the crankshaft, the carrier may be integral with this primary flywheel.

• – einen Antriebsverbrennungsmotor des Fahrzeugs, insbesondere mit zwei, drei, vier, sechs oder acht Zylindern, und
• – eine Übertragungssystem-Komponente, wie vorstehend definiert.

The subject of the invention, according to another of its aspects, is still a vehicle powertrain having:

• A drive internal combustion engine of the vehicle, in particular with two, three, four, six or eight cylinders, and
• A transmission system component as defined above.

Optionally, cylinder deactivation may allow the engine to run only with certain of only those active cylinders. The engine may now have an operation with only two of its cylinders active, and the pendulum bodies may thus be designed to filter the firing order of this engine in this one mode of operation.

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

the 1 to 3 a pendulum damping device according to a first variant of a first embodiment of the invention,

the 4 and 5 two alternatives according to a second variant of the first embodiment of the invention,

the 6 and 7 schematic partial views of two variants of a pendulum damping device according to a second embodiment of the invention, and

8th a partial view of a pendulum damping device according to a third embodiment of the invention.

In the 1 to 3 becomes a pendulum damping device 1 illustrated according to a first variant of a first embodiment of the invention.

This device 1 is intended for installation in a hydrodynamic torque converter, but the invention is not limited to such an application, for example, it can be used in an internal combustion engine, in particular with two, three or four cylinders.

• – 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 in the considered example the following:

• - 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 ,

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
• – zwei 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
• - two coupling elements 6 that the two pendulum masses 5 firmly connect.

The coupling elements 6 , also called "spacers" are shown offset in angle in the example considered.

Each pendulum mass 5 has a radially inner edge in the example described 7 which may be substantially circular or may have one or more circular sections and one or more straight sections.

In the 1 to 3 is the pendulum damping device 1 at rest, ie it does not filter the transmitted by the drive train due to rotational irregularities of the engine torsional vibrations.

In the example of 1 to 3 , is each end of a coupling element 6 like a pendulum mass 5 over a rivet 8th riveted that these two pendulum masses 5 are firmly connected. In variations, each of these ends could be pressed into an opening in one of the pendulum masses 5 is housed. Each coupling element 6 extends partly in a window housed in the carrier 19 , In the example considered, the window defines 19 an empty space inside the carrier 2 where this window is defined by a closed contour 20 is limited.

The device 1 has rolling elements in the example considered 11 on, for example, in the 5 are visible, and the displacement of the pendulum body 3 concerning the vehicle 2 to lead. The rolling elements are for example rollers.

In the example described, the movement with respect to the carrier 2 from each pendulum body 3 through two rolling elements 11 in the example of the figures, each of them with a the coupling elements 6 of the pendulum body 3 interacts.

Each rolling element 11 acts here with a single first with the wearer 2 firmly connected rolling track 12 and with a single second with the pendulum body 3 firmly connected rolling track 13 together, to the displacement of this pendulum body 3 respectively.

In the example considered, every second rolling track becomes 13 through a part of the radially outer edge of a coupling element 6 educated.

Every first rolling track 12 is through part of the contour 20 a window 19 Are defined.

Every first rolling track 12 is thus with respect to a second Wälzbahn 13 arranged radially so that a same rolling surface of a rolling body 11 alternately on the first Wälzbahn 12 and on the second Wälzbahn 13 running. The rolling surface of the rolling element is here a cylinder of constant radius.

The shape of the rolling tracks 12 and 13 Here is chosen so that the displacement of each pendulum body 3 concerning the vehicle 2 over the rolling elements 11 allows the filtering of the firing order of an internal combustion engine with two active cylinders.

Stop-damping elements 22 of the pendulum body 3 against the carrier 2 can be provided as in 5 shown. Each coupling element 6 So is with such a stop-damping element 22 combined, each of these latter for insertion between this coupling element 6 and the radially inner edge of the window 19 that this coupling element 6 receives, is configured.

According to the invention, a plurality of friction systems 30 provided, each friction system between a pendulum body 3 and the carrier 2 in certain relative positions of this pendulum body 3 concerning the vehicle 2 arranged so that the displacement of this pendulum body 3 concerning the vehicle 2 is braked in these positions.

In the 1 to 3 is a first variant of a first embodiment of these friction systems 30 shown. Here are three friction systems 30 available. Every friction system 30 here has a weight 31 Each of these weights is positioned so that it is on the one hand with the radially inner edge 7 a first pendulum mass 5 and a second pendulum mass of a first pendulum body 3 and on the other hand, the radially inner edge 7 a first pendulum mass 5 and a second pendulum mass 5 a second pendulum body 3 can come into contact with this first and second pendulum body 3 are circumferentially adjacent.

Every weight 31 is here in one in the carrier 2 accommodated opening 34 at a location radially inward of the windows 19 arranged. Such a place of openings 34 allows the weights 31 with the radially inner edge 7 the pendulum masses 5 get in touch.

Every weight 31 is subject to elastic over an elastically deformable spring strip 32 radially outward restoring force. In the example of 1 to 3 is the spring strip 32 each made of Elinvar steel or beryllium copper and defines a closed contour.

The spring strip 32 on the weight 31 to hold the latter axially in place and yet a rotation of the latter about an axis parallel to the axis of rotation X of the carrier 2 to enable.

The introduction of the elastically deformable spring strip 32 in the opening 34 requires deformation of the same in the example described. In the opening 34 can the spring strip 32 Immediately return to its original shape, and for example, in the edge of this opening 34 housed lifting eyes 35 , After returning to its original shape, the spring strip can 32 expediently no longer out of the opening 34 fall out.

In particular, in 2 determine that the spring strip 32 according to this first variant only at some points with the edge of this opening 34 can cooperate, which are also locally spaced from this edge.

• – einen ersten Zylinderteil 38 mit zweitem Radius, der mit dem radial innerer Rand 7 der ersten Pendelmasse eines Pendelkörpers 3 und dem radial inneren Rand 7 der ersten Pendelmasse des zirkumferentiell benachbarten Pendelkörpers in Kontakt kommt,
• – eine Zylinderteil 37 mit erstem Radius, der von dem zweiten Radius verschieden ist, der mit dem elastisch verformbaren Federstreifen 32 zur Aufnahme der elastischen Rückstellkraft in Kontakt kommt, und
• – einen zweiten Zylinderteil 38 mit zweitem Radius, der mit dem radial inneren Rand 7 der zweiten Pendelmasse eines Pendelkörpers 3 und dem radial inneren Rand 7 der zweiten Pendelmasse 5 des zirkumferentiell benachbarten Pendelkörpers in Kontakt kommt.

In the example of 1 to 3 has every weight 31 a stepped roll shape. Every weight 31 actually has axially following and in this order the following:

• - A first cylinder part 38 with second radius, with the radially inner edge 7 the first Pendulum mass of a pendulum body 3 and the radially inner edge 7 the first pendulum mass of the circumferentially adjacent pendulum body comes into contact,
• - a cylinder part 37 first radius other than the second radius, with the elastically deformable spring strip 32 comes to receive the elastic restoring force in contact, and
• - A second cylinder part 38 with second radius, with the radially inner edge 7 the second pendulum mass of a pendulum body 3 and the radially inner edge 7 the second pendulum mass 5 of the circumferentially adjacent pendulum body comes into contact.

In the example shown, each part 37 a diameter of the order of 5 mm and each part 38 has a diameter of the order of 10 mm.

The elastically deformable spring strip 32 According to this first variant thus make the shift, including a radial displacement to the inside of the weight 31 , Resistance, if one of the combined pendulum body 3 is exposed to the effect of gravity without absorbing torsional vibrations. By the weight 31 becomes a friction on this pendulum body 3 exercised such that this displacement of the pendulum body 3 slowed down, and even prevented.

With reference to the 4 and 5 Two alternatives of a second variant of this first embodiment of the invention will now be described.

According to this second variant is no weight 31 intended. Every friction system 30 is here solely and solely by an elastically deformable spring strip 32 formed directly with one and / or the other of the two circumferentially adjacent pendulum body 3 comes into contact with this friction system 30 combined.

In 4 illustrating a first alternative of this second variant, it can be seen that the elastically deformable spring strip 32 still in an opening 34 is included with respect to the windows 19 is arranged radially inward.

• – einen ersten Teil 38, der mit dem radial inneren Rand 7 der ersten Pendelmasse 5 eines Pendelkörpers 3 und dem radial inneren Rand 7 der zweiten Pendelmasse 5 eines zirkumferentiell benachbarten Pendelkörpers 3 in Kontakt kommt.
• – einen zweiten in dem Träger 2 axial aufgenommenen, in der Öffnung 34 untergebrachten Teil 39', und
• – eine dritten Teil 38, der mit dem radial inneren Rand 7 der zweiten Pendelmasse 5 des Pendelkörpers 3 und mit dem radial inneren Rand 7 der zweiten Pendelmasse 5 des zirkumferentiell benachbarten Pendelkörpers 3 in Kontakt kommt.

In 4 it is found that the spring strip 32 still defines a closed contour. The spring strip 32 from 4 has here in this order axially consecutive on:

• - a first part 38 that with the radially inner edge 7 the first pendulum mass 5 a pendulum body 3 and the radially inner edge 7 the second pendulum mass 5 a circumferentially adjacent pendulum body 3 comes into contact.
• A second one in the carrier 2 axially received, in the opening 34 accommodated part 39 ' , and
• - a third part 38 that with the radially inner edge 7 the second pendulum mass 5 of the pendulum body 3 and with the radially inner edge 7 the second pendulum mass 5 of the circumferentially adjacent pendulum body 3 comes into contact.

The spring strip 32 from 4 is in the opening 34 mounted by elastic deformation, same as previously with reference to the 1 to 3 described.

In 5 , which represents a second alternative of this second variant, is the elastically deformable spring strip 32 concerning windows 19 arranged radially on the outside. The second part 39 this spring strip lies here, with reference to the description of 4 , at the radially outer edge of the window 19 on, during the first part 38 of the spring strip 32 on the first page 4 of the carrier 2 and the third part 38 of the spring strip 32 on the second page 4 of the carrier 2 is applied. The spring strip 32 from 5 is for example on the carrier 2 glued on, or spot-welded, or even clinched.

With reference to the 6 and 7 Two variants of a second embodiment of the invention will now be described. According to this second embodiment, each friction system 30 from one or more rigid arms 40 educated.

In the variant of 6 each pendulum carries 3 such an arm 40 on each of its coupling elements 6 , This arm 40 is oriented in the direction of the circumference of the next adjacent pendulum body. Every arm 40 is for example rigid to a coupling element 6 of the pendulum body 3 fixed. Every arm 40 comes, for example, along the displacement of the coupling element 6 to which it is fixed, at the radially inner edge 41 of the window 19 in which the coupling element 6 that's the arm 40 carries, is added, to friction. In 6 it is found that this radially inner edge 41 a distance from the axis of rotation X, which is variable when moving around them. This shape with the radially inner edge 41 of the window 19 allows the arm to be the trajectory of the pendulum body 3 despite the friction he has with the wearer 2 generated, not varied.

In 6 is still to be found that one arm 40 a pendulum body 3 with one arm 40 of the circumferentially adjacent pendulum body 3 can come into contact.

7 differs from the previous variant in that one and the same arm 40 with two coupling elements 6 cooperates, which are each combined with circumferentially adjacent pendulum bodies. The arm 40 here is rigid with one of the coupling elements 6 connected and comes on a surface of the other coupling element 6 to rest.

The presence of the arm of 7 , the two circumferentially adjacent pendulum bodies 3 is common, and the presence of the two arms of 6 , each one of these two pendulum bob 3 be worn, maintaining a minimum distance between these pendulum bodies 3 ,

With reference to 8th now becomes a friction system 30 described according to a third embodiment of the invention. According to this third example, each friction system 30 a weight 45 on, with each weight 45 with a single pendulum body 3 combined. Every weight 45 extends here so axially that on the one hand in one in the first pendulum mass 5 of the pendulum body 3 accommodated opening 47 on the other hand, in the carrier 2 housed windows 19 is received and in the example described, the two rolling elements 11 that absorbs the displacement of this pendulum body 3 concerning the vehicle 2 lead and on the other hand in one in the second pendulum mass 5 this pendulum body 3 accommodated opening 47 is included.

The shape of the weight 45 and the openings 47 allows relative displacement of the weight 45 with respect to the pendulum body 3 , where this relative displacement is a linear, substantially radially oriented translation.

This weight 45 comes against a surface of the carrier 2 to friction, which in the example of 8th the radially outer edge of the window 19 one part of which is the first Wälzbahn 12 defined with one of the rolling elements 11 combined, and the other part of the first with the other rolling element 11 combined rolling track 12 Are defined. In the example of 8th has this radially outer edge of the window 19 a distance to the axis of rotation X of the carrier, which varies at circumference displacement.

• – zwei axial versetzte und fest verbundene Träger und,
• – einen Pendelkörper, aufweisend eine einzige Pendelmasse, die axial zwischen den zwei Trägern angeordnet ist, oder aufweisend mehrere untereinander fest verbundene Pendelmassen.

The invention is not limited to the embodiments described above. In particular, the invention also applies to a pendulum damping device comprising:

• Two axially staggered and firmly connected supports and
• - A pendulum body, comprising a single pendulum mass, which is arranged axially between the two carriers, or having a plurality of mutually fixed pendulum masses.

All of these pendulum masses of the same pendulum body can be arranged axially between the two carriers. In one variant, only a particular pendulum mass (s) of the pendulum body extends axially between the two supports, with other pendulum mass (s) of this pendulum body extending axially over one or the other of the supports.

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 102012221103 [0006]

Claims (16)

Pendulum damping device ( 1 ), comprising: - at least one support ( 2 ) which is designed to rotate about an axis (X), - at least one with respect to the carrier ( 2 ) movable pendulum body ( 3 ), and - at least one between the pendulum body ( 3 ) and the carrier ( 2 ) inserted friction system ( 30 ) for all or part of the relative positions of the pendulum body ( 3 ) with regard to the carrier ( 2 ), such that in these positions the displacement of the pendulum body ( 3 ) with regard to the carrier ( 2 ) is braked. Apparatus according to claim 1, wherein the friction system ( 30 ) a weight ( 31 ) carried by the carrier ( 2 ) and comes in contact with the pendulum body, ( 3 ) for all or part of the relative positions. Device according to claim 2, wherein the weight ( 31 ) on the support ( 2 ) is mounted so that it is rotatable about an axis parallel to the axis of rotation (X) of the carrier ( 2 ). Device according to claim 2 or 3, wherein the weight ( 31 ) on the support ( 2 ) is mounted so that it is a particular radially oriented, by the carrier ( 2 ) subjected elastic restoring force, said elastic restoring force the weight ( 31 ) for all or part of the relative positions in contact with the pendulum body ( 3 ) holds. Apparatus according to claim 1, wherein the friction system ( 30 ) by an elastic spring strip ( 32 ) by the wearer ( 2 ) is formed. Device according to claim 5, wherein the elastic spring strip ( 32 ) allows the exercise of an axial friction. Apparatus according to claim 1, wherein the friction system ( 30 ) at least one by the pendulum body ( 3 ) carried rigid arm ( 40 ), this rigid arm ( 40 ) for all or part of the relative positions of the pendulum body ( 3 ) with regard to the carrier ( 2 ) against a surface ( 41 ) of the carrier ( 2 ) comes to friction. Device according to claim 7, wherein the surface ( 41 ) of the carrier ( 2 ) against which the arm ( 40 ) defines a path which extends circumferentially and occupies distinct radial positions. Device according to one of claims 2 to 8, comprising another to the pendulum body ( 3 ) circumferentially adjacent pendulum body ( 3 ), whereby the friction system ( 30 ) these two circumferentially adjacent pendulum bodies ( 3 ) belongs together. Apparatus according to claim 9, wherein the friction system ( 30 ) the maintenance of a minimum distance between these two circumferentially adjacent pendulum bodies ( 3 ). Apparatus according to claim 1, wherein the friction system ( 30 ) a weight ( 45 ), which by the pendulum body ( 3 ) and for all or part of the relative positions with the wearer ( 2 ) comes into contact. Device according to claim 11, wherein the weight ( 45 ) on the pendulum body ( 3 ) is mounted so that it with respect to this pendulum body ( 3 ) is translationally movable in a straight line. Device according to claim 11 or 12, wherein the weight ( 45 ) comes into contact with a surface of the carrier whose distance from the axis of rotation (X) of the carrier ( 2 ) varies or remains constant when circumscribed. Device according to one of the preceding claims, wherein the pendulum body ( 3 ) comprises: - a first pendulum mass ( 5 ) axially on a first side ( 4 ) of the carrier ( 2 ), - a second pendulum mass ( 5 ) axially on a second side ( 4 ) of the carrier ( 2 ), and - at least one coupling element ( 6 ), the first and second pendulum masses ( 5 ), whereby the friction system ( 30 ) for all or part of the relative positions of the pendulum body ( 3 ) with regard to the carrier ( 2 ) between the coupling element ( 6 ) and the carrier ( 2 ) is inserted so that the displacement of the pendulum body ( 3 ) with regard to the carrier ( 2 ) is braked in these positions. Device according to one of the preceding claims, which is configured such that the displacement of the pendulum body ( 3 ) allows the filtering of the firing order of a two-cylinder automotive internal combustion engine. Component for a transmission system of a motor vehicle, wherein the component is in particular a Doppelschwungraddämpfer, a hydrodynamic torque converter, a flywheel fixedly connected to the crankshaft, a dry or wet clutch or a friction clutch disc, which is a damping device ( 1 ) according to one of claims 1 to 15.

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