DE112017002889T5 - damping device - Google Patents

Abstract

The invention relates to damping device (1), comprising: - a primary component (2) adapted to be connected to a crankshaft, - a secondary component (3) adapted to transfer the torque from the primary component to a transmission and a plurality of elastic return elements (18) cooperating on the one hand with the primary component (2) and on the other with the secondary component (3) to prevent the rotation of the secondary component (3) with respect to the primary component (2 ) about an axis of rotation (X), wherein the primary component (2) comprises a first portion (25) and the secondary component (3) comprises a second portion (26), the portions (25, 26) cooperating to to allow axial passage of the first section (25) through the second section (26) when a predefined condition is met in the assembly of the secondary component (3) to the primary component (2) and to define a stop for the axial displacement of the primary component (2) when removed from the secondary component (3) when the secondary component (3) is mounted on the primary component (2) and if the predefined condition is not is more fulfilled.

Description

The present invention relates to a damping device, in particular for a dual clutch, such as a double wet clutch, or for any transmission system for a drive train of a hybrid vehicle. The invention can also be applied to an automatic transmission system.

Such a damping device is to filter all or part of the torsional vibrations resulting from the rotational irregularities of the internal combustion engine.

• - eine primäre Komponente, die geeignet ist, mit einer Kurbelwelle verbunden zu sein,
• - eine sekundäre Komponente, die geeignet ist, das Drehmoment von der primären Komponente zu einem Getriebe zu übertragen, und
• - eine Mehrzahl von elastischen Rückstellelementen, die einerseits mit der primären Komponente und andererseits mit der sekundären Komponente zusammenwirken, um die Drehung der sekundären Komponente in Bezug zur primären Komponente um eine Drehachse zu begrenzen.

For this purpose, it is known to provide a damping device comprising:

• a primary component adapted to be connected to a crankshaft,
• a secondary component adapted to transmit the torque from the primary component to a transmission, and
• - A plurality of elastic return elements, which cooperate on the one hand with the primary component and on the other hand with the secondary component to limit the rotation of the secondary component with respect to the primary component about an axis of rotation.

Such a damping device may carry a well-known pendulum damping module.

• - eine Kunststoffscheibe auf der Nabe der primären Komponente, um einen Anschlag für die Axialverlagerung der primären Komponente bei Annäherung an die sekundäre Komponente zu bilden, und
• - eine Metallscheibe, die auf dieser primären Nabe aufgepresst ist, um einen Anschlag für die Axialverlagerung der primären Komponente bei Entfernung von der sekundären Komponente zu bilden.

It is necessary to limit the axial displacements of the primary component with respect to the secondary component. A known solution is to provide:

• a plastic disc on the hub of the primary component to form a stop for the axial displacement of the primary component as it approaches the secondary component, and
• - A metal disc which is pressed on this primary hub to form a stop for the axial displacement of the primary component when removed from the secondary component.

The presence of the metal disc prevents the secondary component from being assembled with the primary component when assembled. Namely, a step of pressing the metal disc onto the hub of the primary component requires access to the hub of the primary component, which is no longer possible when the hub of the secondary component is mounted. It is thus necessary first to mount only a portion of the secondary component on the primary component, then to press the metal disk onto the hub of the primary component, then finally to the hub of the secondary component with the already mounted portion of this secondary component on the primary component fasten. Such a sequence of steps is complex and costly.

Furthermore, the metal disc pressed onto the hub of the primary component has not negligible costs and a limited life.

Finally, the compensation of the secondary component to solve the imbalance problem can not be made on the entire secondary component, since the hub of this secondary component is mounted on the primary component only at the end of the process, so that the compensation only on part of the secondary component occurs. Such compensation is thus not fully satisfactory.

There is thus a need to eliminate all or part of the aforementioned disadvantages.

From the registration FR 2 725 002 It is also known to provide a bayonet connection between the piston of a lock-up clutch of a hydrodynamic torque converter and the output of a spring damper connected to this torque converter.

• - eine primäre Komponente, die geeignet ist, mit einer Kurbelwelle verbunden zu werden,
• - eine sekundäre Komponente, die geeignet ist, das Drehmoment von der primären Komponente zu einem Getriebe zu übertragen, und
• - eine Mehrzahl von elastischen Rückstellelementen, die einerseits mit der primären Komponente und andererseits mit der sekundären Komponente zusammenwirken, um die Drehung der sekundären Komponente in Bezug zur primären Komponente um eine Drehachse zu begrenzen,

wobei die primäre Komponente einen ersten Abschnitt umfasst und die sekundäre Komponente einen zweiten Abschnitt umfasst, wobei die Abschnitte zusammenwirken, um:

• - ein axiales Überqueren des ersten Abschnitts durch den zweiten Abschnitt zu ermöglichen, wenn eine vordefinierte Bedingung bei der Montage der sekundären Komponente an der primären Komponente erfüllt ist, und
• - einen Anschlag für die Axialverlagerung der primären Komponente bei Entfernung von der sekundären Komponente zu definieren, wenn die sekundäre Komponente an der primären Komponente montiert ist, und wenn die vordefinierte Bedingung nicht mehr erfüllt ist.

The object of the invention is to meet this need, which according to one of its aspects is achieved by means of a damping device comprising:

• a primary component capable of being connected to a crankshaft,
• a secondary component adapted to transmit the torque from the primary component to a transmission, and
• a plurality of elastic return elements cooperating on the one hand with the primary component and on the other hand with the secondary component in order to limit the rotation of the secondary component with respect to the primary component about an axis of rotation,

wherein the primary component comprises a first portion and the secondary component comprises a second portion, the portions cooperating to:

• - allowing axial passage of the first section through the second section when a predefined condition is met in the assembly of the secondary component to the primary component, and
• to define a stop for the axial displacement of the primary component at removal from the secondary component when the secondary component is mounted to the primary component and when the predefined condition is no longer met.

According to the invention, the abutment for the axial displacement of the primary component, when removed from the secondary component, no longer takes place via a disk pressed onto the primary component. The assembly of the secondary component on the primary component can now be done in a single step, and prior to this single step, the secondary component may already have been assembled.

According to the invention, the first and second sections cooperate on the one hand with the assembly of the secondary component on the primary component to allow this assembly, and on the other hand, when this assembly is made, by an axial stop for the displacement of the primary component when it is removed from the secondary To form component. Once assembled, rotation of the secondary component relative to the primary component remains possible.

• - bedeutet „axial“ „parallel zur Drehachse“,
• - bedeutet „radial“ entlang einer Achse, die einer Ebene orthogonal zur Drehachse angehört und diese Drehachse des Trägers schneidet“,
• - bedeutet „im Winkel“ oder „in Umfangsrichtung“ „um die Drehachse“,
• - bedeutet „orthoradial“ „senkrecht zu einer Radialrichtung“,
• - bedeutet „fest“ „starr gekoppelt“.

For the purposes of the present application:

• - means "axially""parallel to the axis of rotation",
• - means "radially" along an axis that belongs to a plane orthogonal to the axis of rotation and intersects this axis of rotation of the beam ",
• - means "at an angle" or "in the circumferential direction""about the axis of rotation",
• - means "orthoradial""perpendicular to a radial direction",
• - means "fixed""rigidlycoupled".

The primary component is adapted to be connected to a crankshaft, which means that it can be rigidly fastened to this crankshaft by fasteners, such as rivets. This connection can thus be permanent. This connection of the primary component with the crankshaft is now different from that which would for example be achieved selectively via a clutch.

The first portion of the primary component and the second portion of the secondary component may be made of metal, such as steel. In this way, a contact metal / metal is provided at the stop in accordance with an axial displacement of the primary component when removed from the secondary component. One of these sections of metal can now carry one or more balancing elements. As a variant, one of these first and second sections may be made of plastic to provide a metal / plastic contact in the abutment in accordance with an axial displacement of the primary component upon removal from the secondary component.

The damping device may comprise a plastic disk defining a stop for the axial displacement of the primary component as it approaches the secondary component when the secondary component is mounted on the primary component. In this way, a contact metal / plastic is ensured at the stop corresponding to an axial displacement of the primary component when approaching the secondary component. This plastic disc may be attached to the primary component.

The two abovementioned abutments may be disposed at the axial ends of a groove provided in the hub of the primary component, the axial displacement of the second portion relative to the first component now taking place exclusively in this groove.

The primary component may include a hub. The primary component may also include a starter ring gear connected to the hub via a flexible flange, also called "flexplate". The primary component can form a primary flywheel. As a variant, the primary flywheel may be rigid, in particular having no hub and no flexplate.

The secondary component may include a hub and a pendulum damping module. The secondary component may also include one or more seals. The hub of the secondary component may include grooves to be mounted on an input shaft of a transmission or on an input shaft of a dry or wet dual clutch.

The pendulum damping module may comprise a plurality of pendulum bodies, which are guided in the displacement via one or more rolling elements with respect to the hub of the secondary component. Each pendulum body can be arranged radially within the elastic return elements of the device, radially at the level of these elastic return elements or radially outside of these elastic return elements.

The secondary component may comprise a flange, also called a "flange", which comes into contact with the elastic return elements. The Wälzbahnen that interact with the rolling elements of the pendulum damping module can be provided in this flange or in a rigid coupled with this flange disc carrier.

When mounting the secondary component on the primary component, the secondary component may already include in the assembled state: the hub, the flange and the pendulum body and optionally the seal (s).

The primary component may define two diametrically opposed support surfaces, the secondary component comprising two arms, each of the arms being adapted to be disposed axially opposite a support surface, particularly on a support surface, and cooperating with elastic return elements when the secondary component mounted on the primary component ,.

According to a first embodiment of the invention, the aforementioned predefined condition relates to the angle between the primary component and the secondary component, this angle being measured in a plane orthogonal to the axis of rotation.

According to this first embodiment, one of the first portion and the second portion includes a claw that passes through an opening of the other of the first and second portions in traversing the first portion axially through the second portion.

Also according to this first embodiment, the portion having the opening defines, other than in the region of the opening, an edge forming an axial stop for the claw of the other portion.

Thus, the predefined condition implies an angle confusion protection here. Alignment between the opening and the claw allows the first section to be traversed axially by the second section to mount the secondary component on the primary component, while in the absence of such alignment, this axial traverse is no longer possible, such that the primary component is axially blocked by the secondary component in its displacement upon removal of this secondary component. Thus, a bayonet connection can be made between the primary component and the secondary component.

For example, one of the first portion and the second portion includes a plurality of jaws that are evenly distributed at an angle, for example, two diametrically opposed jaws, and the other of the first portion and the second portion includes a corresponding number of openings that are angled evenly distributed, for example, two diametrically opposed openings, and each opening is intended for a claw.

• - bei der axialen Überquerung des ersten Abschnitts durch den zweiten Abschnitt die Klaue des zweiten Abschnitts durch die Öffnung des ersten Abschnitts hindurchgeht, und
• - nach dieser axialen Überquerung die Klaue des zweiten Abschnitts am Rand des ersten Abschnitts axial anschlägt, wenn die vordefinierte Bedingung nicht mehr erfüllt ist.

According to a detailed embodiment of this first embodiment, the opening is provided in the first section, and the claw is provided in the second section, wherein the first section defines a rim, other than in the region of the opening, such that:

• in the case of the axial passage of the first section through the second section, the claw of the second section passes through the opening of the first section, and
• - Following this axial traversal, the claw of the second section abuts axially on the edge of the first section, if the predefined condition is no longer met.

• - bei der axialen Überquerung des ersten Abschnitts durch den zweiten Abschnitt jede Klaue des zweiten Abschnitts durch eine Öffnung des ersten Abschnitts hindurchgeht, und
• - nach dieser axialen Überquerung jede Klaue des zweiten Abschnitts am Rand des ersten Abschnitts axial anschlägt, wenn die vordefinierte Bedingung nicht mehr erfüllt ist.

More particularly, two diametrically opposed openings may be provided in the first section, and two diametrically opposed claws may be provided in the second section, the first section defining an edge, other than in the region of the two openings, such that:

• in the case of the axial passage of the first section through the second section, each claw of the second section passes through an opening in the first section, and
• - Following this axial traversal, each claw of the second section abuts axially on the edge of the first section when the predefined condition is no longer met.

• - der Klaue bzw. der Öffnung des ersten Abschnitts und
• - der Öffnung bzw. der Klaue des zweiten Abschnitts

größer als der maximale Drehwinkel der sekundären Komponente in Bezug zur primären Komponente sein.According to this first embodiment of the invention, when the secondary component is mounted on the primary component, the angle measured by the axis of rotation can be between:

• - The claw or the opening of the first section and
• - The opening or the claw of the second section

greater than the maximum angle of rotation of the secondary component with respect to the primary component.

Such an angle condition makes it possible to ensure that the predefined Condition is no longer satisfied when the secondary component is mounted on the primary component, and thus that the stop for the axial displacement of the primary component at removal from the secondary component is very well guaranteed. Namely, the aforesaid angle of rotation corresponds to the angle of rotation which the secondary component has to pass through with respect to the primary component, so that the claw or the opening of the first section comes opposite to the opening or the claw of the second section, so that the primary exits axially Component in relation to the secondary component. The choice, for the aforementioned angle, of a value greater than that of the maximum angle of rotation of the secondary component with respect to the primary component makes it possible to make such an axial escape impossible.

When mounting the secondary component on the primary component, the elastic return elements are now absent. The assembly is done by positioning the secondary component with respect to the primary component so that the second portion can axially traverse the first portion. Then, a rotation about the axis of the secondary component with respect to the primary component may be performed to bring the arm or arms of the secondary component axially opposite the bearing surface (s) of the primary component, particularly at the bearing surface (s).

This rotation may occur despite the force exerted on the secondary component by a metal seal of the primary component.

• - definiert die sekundäre Komponente zwei Arme, wobei jeder Arm an einem Winkelende eines elastischen Rückstellelements zur Anlage gelangt, und ist dieser Arm axial gegenüber einer Auflagefläche angeordnet, insbesondere an einer Auflagefläche anliegend, die in der primären Komponente vorgesehen ist,
• - sind zwei diametral entgegengesetzte Öffnungen in dem ersten Abschnitt vorgesehen,
• - sind zwei diametral entgegengesetzte Klauen in dem zweiten Abschnitt vorgesehen, wobei der erste Abschnitt, woanders als im Bereich der zwei Öffnungen, einen Rand definiert, und
• - ist der minimale Winkel zwischen einer Klaue des zweiten Abschnitts und einer Öffnung des ersten Abschnitts größer als 60°, insbesondere als 70°, insbesondere als 80°.

For a precise execution:

• the secondary component defines two arms, each arm abutting an angled end of an elastic return element, and this arm is disposed axially opposite a support surface, in particular abutting against a support surface provided in the primary component,
• two diametrically opposite openings are provided in the first section,
• two diametrically opposed jaws are provided in the second section, the first section defining an edge, other than in the region of the two openings, and
• - The minimum angle between a claw of the second portion and an opening of the first portion is greater than 60 °, in particular as 70 °, in particular as 80 °.

Each arm may be associated with the aforesaid flange, said latter being riveted to the hub of the secondary component and optionally defining the rolling tracks which guide the displacement of the rolling elements of the pendulum damping module.

According to a first variant of the first exemplary embodiment, the first section of the hub belongs to the primary component, and the second section belongs to a plate connected to the second hub. In particular, this plate can be fastened by riveting on the flange of the secondary component. According to this first variant, the first portion may define the axial end of the primary component farthest from the crankshaft. According to this first variant, the first section belongs in particular to the radially outer zone of the hub of the primary component, while the second section of the radially inner zone belongs to the plate of the secondary component.

According to a second variant of the first embodiment of the invention, the first portion is associated with a lid of the primary component, and the second portion is associated with a plate connected to the secondary hub. The lid, for example, bounds with the plate connected to the second hub an axial space that receives or not hysteresis means, such as a disc or more stacked discs, for the rotational displacement of the secondary component with respect to the primary component. According to this second variant, the first section belongs, in particular, to the radially outer zone of the lid of the primary component, while the second section of the radially inner zone belongs to the plate of the secondary component.

The lid may be connected to the remainder of the primary component, the latter in particular forming a rigid flywheel.

According to a second embodiment of the invention, the predefined condition refers to the value of a force exerted by the secondary component on the primary component. This force is preferably axially aligned.

According to this second embodiment, one of the first portion and the second portion includes at least one pawl which is elastically deformable to deform to traverse the other of the first and second portions when mounted on the second component primary component is a force with a value greater than a limit exerted by the secondary component on the primary component. The limit is, for example, 20 N.

The elastically deformable nature of the claw of the first or second section is obtained, for example, by openings provided in the section. The first or second section thus has one or more elastically deformable claws, and as long as the limit is not reached, these claws (n) on the other section stop, whereas when the limit is reached, these claws or claws evade to allow the axial passage of the first section through the second section.

According to this second embodiment, no opening is now provided in the one of the first and second sections, wherein the axial crossing of the second section takes place thanks to the elastic deformation of the claw (s).

In a detailed embodiment of this second embodiment, the second portion comprises one or more elastically deformable claws, and the first portion defines an edge, the claw of the second portion elastically deforming to axially define the first portion upon assembly of the secondary component on the primary Component to cross when the force is applied with a value above the limit of the secondary component to the primary component, wherein the edge of the first portion of a stop for the axial displacement of the primary component at a distance from the secondary component after this crossing, if none Force is exercised with a value above the limit defined. According to this second embodiment, the first portion belongs in particular to the radially outer zone of the hub of the primary component, while the second portion belongs to a plate connected to the secondary hub, in particular the radially inner zone of the plate.

Also according to the second embodiment of the invention, the first portion may define the axial end of the primary component farthest from the crankshaft.

Throughout the foregoing, the secondary component may comprise a plurality of balancing elements. Several balance plates, for example ten balance plates, may be disposed on the secondary component. These balance plates are attached, for example, on the aforementioned plate of the secondary component, in particular riveted to this. As already mentioned, thanks to the invention, this compensation takes place in order to correct the imbalance of the secondary component, considered in its entirety and not only in part.

Throughout the foregoing, the damping device advantageously has no secondary component rotational guide means with respect to the primary component, such as roller bearings or thrust bearings. The only elements interposed in rotation between the primary component and the secondary component are now the aforementioned elastic return elements.

The elastic return elements are, for example, coil springs, which are for example straight or curved.

The invention further has, according to another of its aspects, a double clutch, in particular a double wet clutch, the subject, comprising a damping device as defined above.

• - einen Verbrennungsmotor,
• - einen Elektromotor, und
• - eine Dämpfungsvorrichtung wie oben definiert.

The invention further relates to a hybrid powertrain of a vehicle, comprising:

• an internal combustion engine,
• - an electric motor, and
• - A damping device as defined above.

• - Bereitstellung einer sekundären Komponente, wobei diese Komponente eine Nabe und vorzugsweise ein Pendeldämpfungsmodul umfasst,
• - Montage der sekundären Komponente auf einer primären Komponente der Dämpfungsvorrichtung, wobei eine vordefinierte Bedingung erfüllt wird, um die axiale Überquerung eines ersten Abschnitts der primären Komponente durch einen zweiten Abschnitt der sekundären Komponente zu erlauben, und
• - durch Zusammenwirken zwischen dem ersten Abschnitt und dem zweiten Abschnitt das Definieren eines Anschlags für die Axialverlagerung der primären Komponente bei Entfernung von der sekundären Komponente, indem die vordefinierte Bedingung nicht mehr erfüllt wird, wenn die sekundäre Komponente auf der primären Komponente montiert ist.

The invention further relates to a method for assembling a damping device, comprising the following steps:

• Providing a secondary component, said component comprising a hub and preferably a pendulum damping module,
• Mounting the secondary component on a primary component of the damping device, wherein a predefined condition is met to allow the axial passage of a first portion of the primary component through a second portion of the secondary component, and
• by cooperating between the first section and the second section, defining a stop for the axial displacement of the primary component when removed from the secondary component, by no longer satisfying the predefined condition when the secondary component is mounted on the primary component.

All or part of the features previously mentioned with respect to the damping device are also applicable to this further aspect of the invention. In particular, the assembly step may be a single, one-time performed step.

In this assembly step, the secondary component may be formed by: the hub, a flange adapted to contact the elastic return elements, a pendulum damping module, and one or more seals. Rotation of the secondary component with respect to the primary component may occur when the axial crossing of the first portion has occurred through the second portion.

The method may include, prior to the mounting step of the secondary component on the primary component, a step of placing balancing elements on the secondary component at the previous step.

The predefined condition may relate to the angular positioning of the secondary component relative to the primary component or to the value of the force exerted by the secondary component on the primary component.

• - 1 eine Gesamtansicht einer Dämpfungsvorrichtung nach einer ersten Variante eines ersten Ausführungsbeispiels der Erfindung ist,
• - 2 eine Schnittansicht der Vorrichtung aus 1 in einer Ebene ist, welche die Drehachse der Vorrichtung enthält,
• - 3 ein Detail aus 2 darstellt,
• - die 4 und 5 jeweils isoliert die primäre Komponente bzw. die sekundäre Komponente vor der Montage der sekundären Komponente auf der primären Komponente zeigen,
• - die 6 und 7 jeweils isoliert die Nabe der primären Komponente, die die erste Zone definiert, bzw. die Platte der sekundären Komponente, die die zweite Zone definiert, vor der Montage der sekundären Komponente auf der primären Komponente zeigen,
• - 8 die Montage der sekundären Komponente auf der primären Komponente zeigt,
• - 9 das Zusammenwirken des zweiten Abschnitts der sekundären Komponente mit dem ersten Abschnitt der primären Komponente bei dieser Montage zeigt,
• - 10 die der sekundären Komponente vorgegebene Drehung in Bezug zur primären Komponente zeigt, wenn der erste Abschnitt axial von dem zweiten Abschnitt überquert wurde,
• - 11 teilweise und im montierten Zustand eine Dämpfungsvorrichtung nach einer zweiten Variante des ersten Ausführungsbeispiels der Erfindung zeigt,
• - 12 eine Schnittansicht der Vorrichtung aus 11 in einer Ebene, die die Drehachse der Vorrichtung enthält, ist,
• - 13 eine Ansicht ähnlich 3 eines Details einer Dämpfungsvorrichtung nach einem zweiten Ausführungsbeispiel der Erfindung ist,
• - die 14, 15 und 16 jeweils Ansichten ähnlich den 4, 6 und 7 sind, sich aber auf das zweite Ausführungsbeispiel der Erfindung beziehen, und
• - 17 den Anschlag zeigt, der nach dem zweiten Ausführungsbeispiel der Erfindung von dem ersten Abschnitt nach Verformung des zweiten Abschnitts bei der Montage der sekundären Komponente auf der primären Komponente bereitgestellt wird.

The invention will be better understood by studying the following description of non-limiting embodiments thereof and by study of the accompanying drawings, wherein:

• - 1 an overall view of a damping device according to a first variant of a first embodiment of the invention,
• - 2 a sectional view of the device 1 is in a plane containing the axis of rotation of the device,
• - 3 a detail from 2 represents,
• - the 4 and 5 each isolated the primary component or the secondary component prior to assembly of the secondary component on the primary component show
• - the 6 and 7 each isolates the hub of the primary component defining the first zone, or the secondary component plate defining the second zone, prior to mounting the secondary component on the primary component;
• - 8th shows the assembly of the secondary component on the primary component,
• - 9 shows the interaction of the second portion of the secondary component with the first portion of the primary component in this assembly,
• - 10 the rotation predetermined relative to the primary component with respect to the secondary component when the first section has been crossed axially by the second section,
• - 11 partially and in the mounted state shows a damping device according to a second variant of the first embodiment of the invention,
• - 12 a sectional view of the device 11 in a plane containing the axis of rotation of the device,
• - 13 a view similar 3 a detail of a damping device according to a second embodiment of the invention,
• - the 14 . 15 and 16 each views similar to the 4 . 6 and 7 are, but relate to the second embodiment of the invention, and
• - 17 shows the stop, which is provided according to the second embodiment of the invention of the first portion after deformation of the second portion in the assembly of the secondary component on the primary component.

In 1 is a damping device 1 illustrated according to a first variant of a first embodiment of the invention. The damping device 1 For example, it is intended to be connected to a dual wet clutch, or integrated into a hybrid powertrain of a vehicle.

• - eine primäre Komponente 2, die in Form eines primären Schwungrads vorhanden ist, und
• - eine sekundäre Komponente 3.

The device 1 includes, as in 1 you can see:

• - a primary component 2 , which is in the form of a primary flywheel, and
• - a secondary component 3 ,

• - eine Nabe 4,
• - eine Flexplate 5,
• - einen Anlasserzahnkranz 6,
• - eine metallische Dichtung 8, die beispielsweise in 4 zu sehen ist.

In the 1 and 2 it should be noted that the primary flywheel 2 in this variant includes:

• - a hub 4 .
• - a flexplate 5 .
• - a starter ring gear 6 .
• - a metallic seal 8th for example, in 4 you can see.

It can thus be seen that the radially outer surface of the hub 4 a groove 9 defined, and that a plastic disc 10 whose role will be explained later, at one axial end of the groove 9 is mounted.

This primary flywheel is suitable on the crankshaft of an internal combustion engine via rivets 7 , in the 2 are shown to be attached.

• - eine Nabe 12, die Nuten 11 aufweist, die ihre Montage auf einer Welle ermöglichen,
• - einen Flansch 13, auch „Flanschscheibe“ genannt, der über Nieten 15 auf der Nabe 12 befestigt ist,
• - Pendelkörper, wobei jeder Pendelkörper zwei Pendelmassen 14 umfasst, die jeweils axial auf einer Seite der Flanschscheibe angeordnet sind, wobei diese letztgenannte die Rolle eines Trägers für die Pendelkörper spielt,
• - eine Dichtung 16,
• - eine Platte 17, die auf der Nabe 12 und auf der Flanschscheibe 13 mit Hilfe der Nieten 15 befestigt ist.

The secondary component 3 includes according to this first variant:

• - a hub 12 , the grooves 11 having their mounting on a shaft,
• - a flange 13 , also called "flange disc", which has rivets 15 on the hub 12 is attached,
• - pendulum body, each pendulum body two pendulum masses 14 each disposed axially on one side of the flange disc, the latter playing the role of a shuttle for the pendulum bodies,
• - a seal 16 .
• - a plate 17 on the hub 12 and on the flange disc 13 with the help of rivets 15 is attached.

The secondary component 3 integrated thus here a pendulum damping module whose flange 13 forms the carrier.

The device 1 further comprises elastic return elements 18 indicating the rotation of the secondary component 3 in relation to the primary flywheel 2 around the axis of rotation X limit. Two feathers 18 are provided here, and they are curved springs.

As in 2 can be seen, includes the flange 13 in this example, two arms 20 , each defining a radial extension, and each of these arms passes 20 with a spring 18 in contact when the secondary component 3 in rotation around the axis X in relation to the primary flywheel 2 relocated. The two arms 20 are diametrically opposed here.

• - bei der Montage der sekundären Komponente 3 auf der primären Komponente 2 eine axiale Überquerung des ersten Abschnitts 25 durch den zweiten Abschnitt 26, wenn eine vordefinierte Bedingung erfüllt ist, und
• - nach dieser Montage die Herstellung eines Anschlags für die axiale Verlagerung der primären Komponente 2 bei Entfernung von der sekundären Komponente 3, sobald die vordefinierte Bedingung nicht mehr erfüllt ist.

In the example described, the primary flywheel defines a border for the radial outward displacement with respect to the springs 18 , According to the invention, the primary component 2 a first section 25 on, and the secondary component has a second section 26 on, which allow:

• - during assembly of the secondary component 3 on the primary component 2 an axial crossing of the first section 25 through the second section 26 if a predefined condition is met, and
• - After this assembly, the production of a stop for the axial displacement of the primary component 2 at removal from the secondary component 3 as soon as the predefined condition is no longer fulfilled.

According to the first embodiment, the condition to be met refers to an axial crossing of the first section 25 through the second section 26 to allow for the angular positioning of the secondary component 3 in relation to the primary component 2 ,

After this first variant is the first section 25 through an axial end of the hub 4 of the primary flywheel 2 Are defined. This first section 25 here forms an axial end of the groove 9 which is opposite to that of the plastic disc 10 receives. Also after this first variant is the second section 26 from the radially inner zone of the plate 17 formed of the secondary component.

With reference to the 4 to 7 are the first section in more detail 25 and the second section 26 described after this first variant.

4 represents the primary flywheel 2 It can be seen that this flywheel has two diametrically opposed bearing surfaces 30 defined, each arm 20 the secondary component 3 intended to be axially opposite one of these bearing surfaces 30 or on one of these support surfaces 30 to come to the concern, as will be seen in the episode.

The hub 4 the primary component 2 is isolated in 6 shown. This hub 4 has a collar 32 which extends essentially axially and extends through an edge 33 extended, that of the collar 32 directed radially outwards. This collar 32 and this edge 33 define the first zone 25 ,

In 6 it should be noted that two openings 34 in the first zone 25 are provided. These openings 34 are diametrically opposed here. Each opening extends both in the collar 32 as well as in the margin 33 ,

Each in the primary flywheel 2 provided support surface 30 is offset at an angle to everyone in the hub 4 provided opening 34 arranged.

5 Represents the secondary component 3 in assembled condition before mounting on the primary flywheel 2 in this 7 isolated the hub 12 the secondary component of the 5 represents, it should be noted that the plate 17 two diametrically opposed claws 37 carries, these two claws 37 the second section 26 define. Every claw 37 sticks out from the rest of the plate 17 radially inward. Every claw 37 is here radially in the extension of an opening 34 arranged.

With reference to the 8th to 10 will now be the assembly of the secondary component 3 on the primary flywheel 2 described.

As in 8th shown, becomes the secondary component 3 previously at an angle relative to the primary flywheel 2 positioned. Thus, the predefined condition is met, which is an angular orientation in a plane orthogonal to the axis of rotation X between a claw 37 of the second section 26 on the one hand and an opening 34 of the first section 25 on the other hand pretends. When this angular alignment has occurred, the secondary component is pushed axially 3 in relation to the primary flywheel 2 every claw 37 in an opening 34 introduced as in 9 shown. It should be noted that during this insertion the arms 20 the secondary component 3 not with those in the primary flywheel 2 provided bearing surfaces 30 are aligned at an angle. For clarity, the hub is 12 the secondary component 3 in 9 not shown.

After crossing the openings 34 of the first section 25 through the claws 37 of the second section 26 and thus after the axial crossing of the first section 25 through the second section 26 a rotation takes place around the axis X the secondary component 3 in relation to the primary component 2 against the action of the metallic seal 8th to the arms 20 the secondary component 3 axially opposite the bearing surfaces 30 or on the bearing surfaces 30 to bring to the concern. The angle of rotation, here the secondary component 3 is subjected to each arm 20 axially opposite a bearing surface 30 to bring, it allows a claw 37 from the opening 34 that she has crossed to remove. This rotation angle is greater here than in function of the maximum rotation angle of the secondary component 3 in relation to the primary flywheel 2 against the feathers 18 so as to ensure that an angular orientation of a claw 37 with an opening 34 is no longer possible if the secondary component 3 on the primary component 2 is mounted and the springs 18 are attached.

Due to this non-alignment, each claw gets 37 the second zone 26 now on the edge 33 the first zone 25 to stop as soon as an axial displacement of the primary flywheel 2 in relation to the secondary component 3 under removal of this secondary component 3 takes place. Thus, a bayonet type connection is obtained. The stop for axial displacement of the primary flywheel relative to the secondary component as it approaches this secondary component 3 is from the aforementioned elastic disc 10 delivered. The second section 26 is thus in the groove 9 limited so that the axial displacement of the primary component 2 in relation to the secondary component 3 is limited.

With reference to the 11 and 12 Now, a second variant of the first embodiment of the invention will be described. In 11 is the hub 12 the secondary component 3 not shown for clarity.

This second variant differs from that with reference to the 1 to 10 described variant in that the first section 25 no longer in a zone of a hub 4 of the primary flywheel 3 is provided. The first paragraph 25 is here in a lid 40 provided on the primary flywheel 2 , here with the help of bolts 41 , is attached. Thanks to the presence of the cover, there is now an axial clearance in the primary flywheel 2 Are defined.

This axial space takes on the one hand the plate 17 the secondary component, the latter being the second section 26 defines which claws 37 On the other hand, although this is not the case in the illustrated example, it could hysteresis disks for the rotational displacement of the secondary component 3 in relation to the primary flywheel 2 take up.

The interaction of the first 25 and second sections 26 remains as with reference to the 1 to 10 described both the assembly of the second component 3 on the primary flywheel 2 concerns, as well as what the stop for the axial displacement of the primary flywheel 2 at a distance from the secondary component 3 after this assembly concerns.

With reference to the 13 to 17 now becomes a damping device 1 described according to a second embodiment of the invention.

According to this second embodiment, the predefined condition refers to the value of one of the secondary component 3 force applied to the primary component during assembly of the secondary component 3 on the primary flywheel 2 and after this assembly.

Similar as with reference to the 1 to 11 described are claws 37 in the second section 26 intended. breakthroughs 50 are also in the second section 26 the secondary component 3 provided here again from the radially inner zone of the plate 17 the secondary component 3 is formed. These breakthroughs lend the claws 37 an elastically deformable character. Here are four claws 37 from the plate 17 inside out.

The first paragraph 25 Here, similar to the first variant of the first embodiment of the invention, from an axial end of the hub 4 of the primary flywheel 2 Are defined. This first section 25 here forms an axial end of the groove 9 which is opposite to that which the plastic disc 10 receives.

The first paragraph 25 is here from an edge 52 formed, extending radially outward from an axial collar 51 the hub 4 extends out. The edge 52 is here full, ie that in the first section according to this embodiment, no opening for the passage of a claw 37 of the second section 26 is provided.

The assembly of the secondary component 3 on the primary flywheel 2 is done as follows.

An axial force is from the second component 3 on the primary flywheel 2 exercised. To the axial crossing of the first section 25 through the second section 26 To enable it, it is necessary that this force has a value greater than a limit from which the claws 37 against the edge 52 of the first section 25 Dodge by elastic deformation. Because of this evasion of the claws 37 no stop resists the axial crossing of the first section 25 through the second section 26 ,

The claws 37 of the second section 26 can now the groove 9 take in the hub 4 of the primary flywheel 2 is provided, in which they can return to their original form.

If from the primary flywheel 2 on the secondary component 3 no force is exerted with a value greater than the limit, get the claws 37 on the edge 52 of the first section 25 to the stop, allowing the displacement of the primary flywheel 2 with removal from the secondary component through the interaction between the first section 25 and the second section 26 is blocked.

The invention is not limited to the examples just described. Instead of the double wet clutch, the invention can be applied to a double dry clutch or an automatic transmission system.

In each of the above examples, secondary components, such as the plate, may be used 17 , Auswuchtplättchen be worn.

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

• FR 2725002 [0010]

Claims (19)

Damping device (1), comprising: a primary component (2) adapted to be connected to a crankshaft, a secondary component (3) adapted to transmit the torque from the primary component to a transmission, and - A plurality of elastic return elements (18) which cooperate on the one hand with the primary component (2) and on the other hand with the secondary component (3) to the rotation of the secondary component (3) with respect to the primary component (2) about an axis of rotation (X), wherein the primary component (2) comprises a first portion (25) and the secondary component (3) comprises a second portion (26), the portions (25, 26) cooperating to: - To allow an axial crossing of the first portion (25) through the second portion (26) when a predefined condition in the assembly of the secondary component (3) on the primary component (2) is met, and to define an abutment for the axial displacement of the primary component (2) on removal from the secondary component (3) when the secondary component (3) is mounted on the primary component (2) and if the predefined condition is no longer met , Device after Claim 1 wherein the sections (25, 26) are made of metal. Device after Claim 1 or 2 device comprising a plastic disc (10) defining a stop for the axial displacement of the primary component (2) as it approaches the secondary component (3) when the secondary component (3) is mounted on the primary component (2). Device according to one of Claims 1 to 3 wherein the primary component (2) comprises a hub (4) and the secondary component (3) comprises a hub (12) and a pendulum damping module. Device according to one of the preceding claims, wherein one of the first portion (25) and the second portion (26) comprises a claw (37) passing through an opening (34) of the other of the first (25) and the second portion (26). 26) passes through the second section (26) as it traverses the first section (25) axially. Device after Claim 5 wherein the portion (25, 26) having the opening (34) defines, outside the area of the opening (34), a rim (33) providing an axial stop for the claw (37) of the other portion (25, 26) forms. Device according to the Claims 5 and 6 in which the opening (34) is provided in the first section (25) and the claw (37) is provided in the second section (26), the first section (25) having an edge (33) outside the area of the opening (34). defined so that: during the axial passage of the first section (25) through the second section (26), the claw (37) of the second section (26) passes through the opening (34) of the first section (25), and after this axial traversal, the claw (37) of the second section (26) abuts axially on the edge (33) of the first section (25) if the predefined condition is no longer met. Device according to one of Claims 5 to 7 in which the angle measured by the rotation axis (X) between: - the claw (37) or the opening (34) of the first section (25) and - the opening (34) or the claw (37) of the second section ( 26) is greater than the maximum angle of rotation of the secondary component (3) with respect to the primary component (2). Device after Claim 4 and one of the Claims 5 to 8th wherein the first portion (25) of the hub (4) belongs to the primary component (2) and the second portion (26) of a plate (18) connected to the second hub (12). Device after Claim 4 and one of the Claims 5 to 8th wherein the first portion (25) is associated with a cover (40) attached to the hub (4) of the primary component (2), and the second portion (26) is associated with a plate (18) connected to the hub of the secondary component (3). belongs. Device according to one of Claims 1 to 4 wherein one of the first portion (25) and the second portion (26) comprises at least one claw (37) which is elastically deformable to engage in traversing the other of the first (25) and second portions (26). deform when a force is applied with a value greater than a limit of the secondary component (3) on the primary component (2) during assembly of the secondary component on the primary component. Device after Claim 11 wherein the second portion (26) comprises at least one elastically deformable claw (37) and the first portion (25) defines a rim (52), the claw (37) of the second portion (26) elastically deforming around the first Axially traversing section (25) during assembly of the secondary component (3) on the primary component (2) when the force having a value above the limit of the secondary component (3) to the primary component (2) wherein the edge (52) of the first portion (25) defines an abutment for the axial displacement of the primary component (2) on removal from the secondary component (3) after that traversal when no force is applied having a value in excess of the limit becomes. Device according to one of the preceding claims, wherein the secondary component (3) comprises a plurality of balancing elements. Device according to one of the preceding claims, wherein it has no rotary guide means, such as roller bearings or thrust bearings, the secondary component relative to the primary component. Double wet clutch, comprising a damping device (1) according to one of the preceding claims. A hybrid powertrain of a vehicle, comprising: an internal combustion engine, an electric motor, and a damping device (1) according to any one of Claims 1 to 14 , Method for mounting a damping device (1), comprising the following steps: Providing a secondary component (3), said secondary component (3) comprising a hub (12) and preferably a pendulum damping module, Mounting the secondary component (3) on a primary component (2) of the damping device, wherein a predefined condition is met for axially traversing a first section (25) of the primary component (2) through a second section (26) of the secondary section To enable component (3), and Defining an abutment for the axial displacement of the primary component (2) when removed from the secondary component (3) by the interaction between the first portion (25) and the second portion (26), by the predefined condition is no longer met, if the secondary component (3) is mounted on the primary component (2). Method according to Claim 17 in which balancing elements are placed on the secondary component (3) before being mounted on the primary component (2). Method according to the Claims 17 and 18 , wherein the predefined condition relates to the angular positioning of the secondary component with respect to the primary component or to the value of the force applied during assembly from the secondary component (3) to the primary component (2).

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