FR3067430B1 - PENDULAR DAMPING DEVICE - Google Patents

Abstract

Pendulum damping device, comprising: - a support (2, 102, 202) able to move in rotation about an axis (X), - at least one oscillating weight (3, 103, 203), and - at at least one rolling member (11, 111, 211) guiding the displacement of the oscillating mass relative to the support, the rolling member cooperating on the one hand with a running track secured to the support and on the other hand with a track integral with the oscillating mass, the device being characterized in that it comprises a split annular spring (25, 25 ', 125, 125', 225) of axis Y, compressed towards the axis Y by a surface ( 34) of a first member inclined with respect to a plane (P) perpendicular to the axis Y, so that the spring is resiliently supported, along the Y axis, on a second member different from the first member, the first and second members being selected from said at least one rolling member, the support, said at least one oscillating weight and a interposition piece (140) integral in rotation with one of the rolling members, the support and the oscillating mass.

Description

PENDULAR DAMPING DEVICE

Technical area

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

State of the art

In such an application, the pendulum damping device can be integrated with a torsion damping system of a clutch capable of selectively connecting the heat engine to the gearbox, in order to filter the vibrations due to the acyclisms of the engine. Such a torsion damping system is for example known as the double damping flywheel.

Alternatively, in such an application, the pendulum damping device may be integrated with a friction disc of the clutch or with a hydrodynamic torque converter.

Such a pendular damping device conventionally implements a support and one or more oscillating masses movable relative to this support, the displacement, with respect to the support, of each oscillating mass being guided by one or two co-operating rolling members. a part with rolling tracks secured to the support, and secondly with rolling tracks secured to the oscillating masses. Each oscillating mass comprises for example two flyweights riveted together.

It is known to choose the damping device, for example via the shape of the rolling tracks, so that the latter filters the excitation order of a two-cylinder combustion engine of the vehicle, also called "order 1 ", the order of excitation of a heat engine being, in a known manner, associated with the number of explosions of this engine per revolution of crankshaft. Such devices are very sensitive to the force of gravity, the latter can then cause unwanted displacements of the oscillating masses, and thus affect the filter performance.

To remedy this problem, it is known, for example, from the application DE 10 2012 221 103 to provide springs between two circumferentially adjacent oscillating masses, so that the oscillating masses thus connected resist the force of gravity exerted alternately. on the latter when the device is driven by a rotational movement. Due to the insertion of the springs, an additional resonant frequency appears. The insertion of the springs may still require cutting open cutouts in the support of the device, thereby reducing the movement of the oscillating masses. In addition, it is necessary to correctly size the springs and the maintenance of the characteristics of the springs in time is not guaranteed. The object of the invention is to reduce the influence of gravity on the oscillating masses, in particular when the latter are intended to filter the excitation order of a two-cylinder thermal engine of a vehicle, while remedying to all or some of the above disadvantages. SUMMARY OF THE INVENTION To this end, the invention proposes a pendular damping device, comprising: a support able to move in rotation about an axis, at least one oscillating mass, preferably comprising a first and a second flyweight axially spaced relative to each other and movable relative to the support, the first flyweight being arranged axially on a first side of the support and the second flyweight being arranged axially on a second side of the support, and at least one connecting member of the first and second flyweights matching said flyweights, and - at least one rolling member guiding the displacement of the oscillating mass relative to the support, the rolling member cooperating on the one hand with a running track secured to the support and on the other hand with a running track integral with the oscillating mass and preferably defined by the connecting member.

Remarkably, the device comprises a split annular spring, or "spring" in C ", of axis Y, compressed radially, that is to say towards the axis Y, by a surface of a first inclined member relative to a plane perpendicular to the axis Y, so that the spring bears resiliently, axially, on a second member different from the first member, the first and second members being chosen from a rolling member, the support, a oscillating weight, preferably a weight of an oscillating mass and an interposing piece integral in rotation with one of the rolling members, the support and the oscillating mass.

As will be seen in more detail in the following description, the spring exerts an action tending to axially remove the first member of the second member. If the first member is in axial abutment, it is thus elastically tightened by the second member.

In particular, when the first and second members are a rolling member and a flyweight, respectively, the axial clamping exerted by the rolling member on the flyweight, and thus on the oscillating weight, opposes the displacement of this oscillating mass. under the effect of gravity and thus hinders the action of gravity on the running gear. The invention allows the locking of the rolling member relative to the oscillating mass at engine stop. The invention makes it possible to eliminate the noise of the impact of the running gear on the support or on the oscillating mass when the running gear is free, for example when the engine is stopped. The rolling member is thus temporarily secured to the oscillating mass.

Preferably, the spring is configured to exert said spreading action regardless of the relative positions of the first and second members.

A device according to the invention may also comprise one or more of the following optional features: the angle of inclination of the inclined surface with respect to said plane perpendicular to the Y axis is greater than 60 °, preferably greater than 65 ° and / or less than 85 °, preferably less than 80 °;

The slot of the spring extends, in a position in which said spring is not constrained, on an angular sector, centered on the Y axis of the spring, greater than 5 °, preferably greater than 15 ° and / or lower at 90 °, preferably less than 70 °; - In a position in which the spring is not constrained, the minimum width of the slot is greater than 1 mm and / or less than 10 mm;

The spring is an open torus with constant section, in particular the spring has a cylindrical or polygonal section; - The spring bears on the first member along a first contact line and / or bears on the second member along a second contact line, and preferably the spring has a substantially discoidal section in a radial section plane with respect to the axis of the spring; Alternatively, the spring bears on the first member along a first contact surface and / or bears on the second member along a second contact surface, and, preferably, the spring has a section substantially polygonal in a radial section plane with respect to the axis of the spring; - The spring bears on the first member along a first contact line and / or bears on the second member along a second contact line, and preferably the spring has a substantially discoidal section in a radial section plane with respect to the axis of the spring; - The spring is supported on the first member along a line of contact and bears on the second member along a contact surface; - The spring bears on the first member along a contact surface and bears on the second member along a nip; - The inclined surface is defined by a housing, optionally through, provided on an axial end face of the rolling member and / or on an axial end face of the support and / or on an axial end face of the oscillating mass; - The first member is a rolling member and the second member is an oscillating mass; The first member is an oscillating mass and the second member is the support;

The spring is configured to exert an axial clamping greater than 0.2 N, preferably greater than 0.3 N and / or less than 5 N, preferably less than 2 N, for example 1 N; Preferably, the overall clamping force, expressed in Newtons, exerted on the oscillating weight, by the support and / or by all the rolling members guiding the displacement of an oscillating mass with respect to the support, is between 20% and 110% of the weight, expressed in Newtons, of this oscillating mass. Preferably, this clamping force is between 50% and 90% of the weight of the oscillating weight, in particular between 60% and 80% of this weight; Said inclined surface is a frustoconical surface. The invention also relates to a component for a transmission system of a motor vehicle, the component being preferably selected from the group consisting of a double damping flywheel, a hydrodynamic torque converter, a flywheel secured to the crankshaft, a double clutch wet or dry, a simple wet clutch, a hybrid powertrain component, and a clutch friction disc, said component comprising a pendulum damping device according to the invention.

The support of the pendular damping device may then be one of: - a web of the component, - a guide washer of the component, - a phasing washer of the component, or - a separate support of said web, said washer of guide and said phasing washer. According to another of its aspects, the subject of the invention is also a vehicle powertrain comprising: a propulsion engine of the vehicle, in particular with two, three or four cylinders, and a component for a transmission system according to the invention. 'invention.

BRIEF DESCRIPTION OF THE FIGURES Other features and advantages of the invention will become apparent on reading the following description and on examining the appended drawing in which: FIGS. 1a and 1b represent, in perspective and front view respectively a pendulum damping device according to a first embodiment; - Figures 2a and 2b show sections, according to the plane A-A shown in Figure lb, the device of Figure 1 in first and second embodiments of the invention, the spring being of circular section; - Figure 2c shows, in perspective, the rolling member and the spring of Figure 2a; - Figures 3a and 3b show sections, according to the plane A-A shown in Figure lb, the device of Figure ldans third and fourth embodiments of the invention, the spring being of polygonal section; Figure 2d shows a detail of Figure 2a; - Figure 4 shows, seen from the front, an example of a spring that can be implemented in a device according to the invention; - Figure 5a shows, seen from the front, another example of pendulum damping device according to the invention, wherein a clamping is provided elastically between the weights and the support; FIG. 5b represents, in perspective, a flyweight of the device of FIG. 5a; FIGS. 6a and 6b show sections, according to the sectional plane G-G, of the device of FIG. 5a, in two different embodiments; - Figure 7a shows, seen from the front, yet another embodiment of a pendulum damping device according to the invention; - Figure 7b shows, in perspective, the support of the device shown in Figure 7a; and FIG. 7c represents a section, along the sectional plane E-E, of the device of FIG. 7a. FIGS. 8a and 8b show variants of FIGS. 2c and 2a, respectively, in which two integral rolling tracks of the oscillating mass are provided.

In the various figures, identical references are used to designate identical or similar members. For reasons of clarity, the members referenced in FIGS. 5 and 6 on the one hand, and on the other hand, which are equivalent to members of the devices of FIGS. 1 to 3, are referenced with the same references, to which are added 100 and 200, respectively.

In Figures lb and 7a, the oscillating masses are shown transparent for clarity. Definitions

Unless otherwise indicated, "axially" means "parallel to the axis X of rotation of the support", itself parallel to the axis Y of rotation of the rolling member; - "radially" means, as appropriate, "along a transverse axis intersecting the axis of rotation of the support" or "along a transverse axis intersecting the axis of rotation of the rolling member -" transverse "means" in a plane perpendicular to the axis of rotation of the support ", -" angularly "or" circumferentially "means" around the axis of rotation of the support ", -" orthoradially "means" perpendicular to a radial direction ".

"Motor vehicle" means not only passenger vehicles, but also industrial vehicles, including heavy goods vehicles, public transport vehicles or agricultural vehicles.

By "oscillating weight" or "pendulum body" is meant a mass which is mounted to oscillate on the support in response to acyclisms of the vehicle engine. An oscillating mass is conventionally constituted by a pair of flyweights, or "pendular masses", extending so as to sandwich the support and rigidly secured to each other. An oscillating mass can also be constituted by a single weight.

Two pieces are said to be "rigidly secured" when they are permanently immobilized relative to each other. This immobilization can result from a fixing of the first part on the second part directly or via one or more intermediate parts.

The rest position of the device is that in which the oscillating masses are subjected to a centrifugal force, but not to torsional oscillations from the acyclisms of the engine.

Unless otherwise indicated, the verbs "to include", "to present" or "to understand" must be interpreted broadly, that is to say non-limitatively.

detailed description

Device ensuring a clamping between a rolling member and the oscillating mass

FIG. 1 (1a, 1b) shows a damping device 1 of pendulum oscillator type at rest.

The device 1 is particularly suitable for equipping a motor vehicle transmission system, for example being integrated with an unrepresented component of such a transmission system. This component is for example a double damping flywheel, a hydrodynamic torque converter or a clutch friction disc.

This component can be part of a powertrain of a motor vehicle, this group comprising a thermal engine including two, three or four cylinders.

In known manner, such a component may comprise a torsion damper having at least one input element, at least one output element, and circumferentially acting resilient return members which are interposed between said input and output elements. . For the purposes of the present application, the terms "input" and "output" are defined with respect to the direction of torque transmission from the engine of the vehicle to the wheels of the latter.

The device 1 comprises: a support 2 able to move in rotation about an axis X, and a plurality of oscillating masses 3 movable relative to the support 2.

The support 2 may be constituted by: - an input element of the torsion damper, - an output element, - an intermediate phasing element disposed between two series of spring of the damper, or - a linked element in rotation to one of the aforementioned elements and distinct from the latter, being then for example a support specific to the device 1.

The support 2 is in particular a guide washer or a phasing washer. The support may be other, for example a flange of the component.

The support can be made in one piece, being for example entirely metallic.

In the example considered, the support 2 has two substantially flat axial end faces 4a and 4b.

The device comprises for example a number between two and eight, in particular three or six oscillating masses 3, preferably equi-angularly distributed around the axis X. In FIG. 1, two oscillating masses 3, distributed uniformly over the around the X axis are provided.

Each oscillating mass 3 comprises, in the example under consideration: two flyweights 5a and 5b, each flyweight having a transverse axial end face 7a and 7b, respectively, and extending axially opposite an axial end face 4a and 4b, respectively, of the support 2 (see Figure 2b), and - two connecting members 6, solidarisant the two weights.

The connecting members 6, also called "spacers", are in the example considered angularly offset.

In the example of Figure 1, each connecting member 6 is secured to the flyweights 5 by two rivets 8. In variants not shown, each connecting member 6 can be screwed or welded on each weight 5.

The device 1 also comprises rolling members 11 guiding the displacement of the oscillating masses 3 with respect to the support 2. Each rolling member 11 has a longitudinal axis Y parallel to the axis of rotation X of the support 2.

In the example described, the movement relative to the support 2 of each oscillating weight 3 is guided by two rolling members 11, for example made of steel.

Each rolling member 11 is received in a window 19 formed in the support 2. In the examples considered, each window 19 receives only one rolling member 11.

Each rolling member comprises a roller 14, shaped to cooperate on the one hand with a running track 12 secured to the support 2, here formed by a portion of the edge of the window 19, and on the other hand with a rolling track 13 integral with the oscillating mass 3 and defined by a portion of the radially outer edge of the connecting member 6. The radially outer surface of the roller 14, or "running surface", cylindrical axis Y, can roll alternately on the track bearing integral with the support and on the rolling track secured to the oscillating mass when the running member moves.

In the embodiments of Figures 1 to 3, each rolling member 11 further comprises first and second guide pins 15a and 15b, cylindrical Y-axis, slidably mounted in first and second buttonholes 16a and 16b, respectively, arranged in the first and second flyweights 5a and 5b, respectively. The guide pins preferably have a smaller diameter than the roller, which allows the flyweights to prevent the translation of the rolling member along the Y axis.

Preferably, the first and second buttonholes 16a and 16b are configured so that the first and second guide pins 15a and 15b can abut with the ends of said buttonholes. Rolling elements comprising guide pins are described in particular in FR 3,032,251 or FR 3,029,253.

A running member may be hollow or solid.

Axial clamping is exerted on each oscillating mass 3 of the device 1 by at least one spring 25 interposed between a rolling member 11, preferably each rolling member 11, and at least one counterweight of said oscillating weight 3 (FIGS. 2a and 3a). ).

As shown in FIG. 4, the spring 25 has the general shape of a fraction of a substantially circular ring, extending, about the Y axis, over more than 270 °, preferably more than 300 °, preferably more than 330 °, preferably more than 340 °, preferably more than 350 °, and less than 355 °, preferably less than 345 °.

In a position in which the spring is not stressed, that is to say in a position in which the spring has been extracted from the housing and does not undergo any force tending to close it, it therefore has a slot 40 ' extending circumferentially on a sector of angle α, measured between its two free ends 42a and 42b of the spring from the center of said ring. The angle a is preferably between 5 ° and 90 °. The minimum width d (FIG. 4) of the slot is preferably greater than 1 mm and / or less than 10 mm.

The spring 25 is preferably made of alloy steel for spring.

In the embodiment of FIGS. 1 to 3, the rolling member 11 has at least one transverse axial end face 27, facing an axial end face of a feeder, and defining a housing 30 accommodating the spring 25.

The housing 30 defines an opening 31 through which the spring 25 can be introduced (see Figure 2d).

As shown in detail in FIG. 2d, the housing 30 comprises a bottom 32 extending in a plane P substantially perpendicular to the axis Y and an annular peripheral face 34, or "lateral face of the housing", extending around of the Y axis, from the bottom until the opening of the housing. According to the invention, the peripheral face 34 forms an angle β with the bottom 32 so as to oppose the introduction of the spring, along the Y axis, towards the bottom 32 of the housing. During this introduction, the interaction between the spring 25 and the peripheral face 34 in fact forces the spring to contract elastically, and the inclination of the peripheral surface tends to push the spring towards the opening of the housing.

The spring 25 is preferably configured so that the axial clamping is exerted on the oscillating mass for any position of the latter with respect to the support 2. There is then no range of displacement of this oscillating mass 3 with respect to the support 2 in which no axial clamping is exerted by the rolling members 11. The axial clamping can be of constant value. As a variant, the value of the axial clamping may vary during the displacement of the oscillating mass 3 with respect to the support 2.

Preferably, the overall clamping force, expressed in Newtons, exerted by all the rolling members guiding the displacement of an oscillating mass relative to the support, is between 20% and 110% of the weight, expressed in Newtons, of this oscillating weight. Preferably, this clamping force is between 50% and 90% of the weight of the oscillating weight, in particular between 60% and 80% of this weight. To obtain such a clamping force, one can play on the value of the coefficient of friction occurring during this tightening.

The peripheral face 34 may also be of any kind, provided that the interaction between the spring 25 and the peripheral surface tends to push the spring when it is pushed, along the Y axis, toward the bottom of the housing. The angle β with the bottom 32 is preferably constant, regardless of the radial section plane, that is to say containing the Y axis, considered. The peripheral face 34 is frustoconical. The angle β is preferably greater than 60 °, preferably greater than 65 °, and preferably less than 85 °, preferably less than 80 °.

The section of the spring can be any. It can be constant or variable.

The section of the spring can be in particular circular (Figures 2a and 2b), which leads to a contact along a contact line L when the peripheral face 34 of the housing is frustoconical.

The section of the spring may be in particular polygonal (Figures 3a and 3b), preferably so that the contact with the peripheral face is along a contact surface S when the peripheral face 34 of the housing is frustoconical.

The contact between the spring and the housing and / or between the spring and the oscillating mass may be direct or through an interposing piece integral in rotation with the oscillating mass. In particular, an interposer may be disposed between the spring and the oscillating mass to limit the wear of the spring. Such an interposer, or "slider", may be in particular a polymeric material, for example PA66.

In the examples of FIGS. 2a and 3a, the other axial end face 27 'of the rolling member 11 does not receive a spring 25. In the examples of FIGS. 2b and 3b, the other end face axial 27 'comprises another housing 30' to accommodate a second spring 25 '. The springs 25 and 25 'being identical or similar and acting in an analogous manner, only the spring 25 has been described in detail. The spring 25 'and the housing 30' may have one or more of the optional features described for the spring 25 and the housing 30, respectively.

Lonctionnement

The operation of the device of Figure la follows immediately from the foregoing description.

More specifically, during assembly of the device, the spring 25 is introduced along the axis Y into the housing 30. During this introduction, the spring 25 comes into contact with the peripheral face 34 of the housing. The introduction continues, however, in force, during the axial approximation of the two weights of one another. Under the effect of this force assembly, the spring contracts, that is to say that the angle a between the two free ends 42a and 42b of the spring is reduced. In the mounted position, the spring is forced to remain in the housing 30 by the weights. The reaction of the peripheral face 34 on the spring 25 results in a radial force, in a plane perpendicular to the Y axis, but also, thanks to the inclination of the peripheral face 34, by a force parallel to the axis Y and tending to release the spring from the housing 30. The spring 25 therefore exerts an action tending to move, along the Y axis, the rolling member 11 and the weight with which it is in contact. This action thus pushes the rolling member 11 in abutment against the second flyweight 5b. The spring 25 and the inclined face 24 thus advantageously make it possible to ensure friction which hinders the displacement of the rolling member 11 relative to the oscillating mass. The rolling member also rolling on the rolling track of the support 2 thus hinders the displacement of the oscillating mass relative to the support.

This action can be easily modified by changing the stiffness of the spring 25 and / or its outside diameter and / or by changing the inclination of the peripheral face 34 and / or its mean diameter. It is also possible to modify the zone of contact between the spring and the peripheral face 34, by modifying the profile of the peripheral face 34 and / or the cross section of the spring, in particular so that the zone of contact with the inclined face is linear (Figure 2d) or surface (Figures 3a and 3b).

Finally, it is possible to provide a second spring 25 'housed in a housing 30' bearing on the second flyweight 5b.

Tests have shown that the invention makes it possible to obtain a well-adapted clamping. Moreover, a device according to the invention is particularly reliable and robust. The clamping action can also be increased by multiplying the number of rolling members provided with a spring 25 and optionally a spring 25 '.

Device ensuring a clamping between the oscillating mass and the support

FIG. 5a shows a pendular damping device comprising a support 102 able to move in rotation about an axis X and two oscillating masses 103 movable relative to the support 102 by means of rolling members 111. The support and the oscillating masses are, in this example, substantially identical to those of the device shown in Figure 1. The rolling members 111 may be identical or different from those of Figure 1, and in particular do not accommodate spring.

The device shown in Figure 5a differs from that of Figure 1 in that it comprises a spring 125 resiliently supported between the support and a weight of the oscillating mass.

The spring 125 is housed in a housing 130 formed on an axial end face of a weight of the oscillating mass, extending facing one of the two axial end faces of the support (Figures 6a and 6b).

As shown in Figure 5b, a feeder comprises two housings 130 in each of which a respective spring 125 has been housed. The spring 125 is a split annular spring, like the spring 25, and may have one or more of the optional features of the spring 25. The housing 130 may also include one or more of the features of the housing 130. The interaction between the flyweight and the support is similar to that of the rolling member and the weight of the device of Figure 1.

Preferably, as shown in Figures 6a and 6b, each weight comprises at least one housing 130 receiving a spring 125, preferably at least two housings 130 and 130 'receiving springs 125 and 125', respectively. As shown in FIG. 6a, an interposing piece 140 integral in rotation with the oscillating mass is preferably arranged between the spring 125 and the support 102, in order to limit the friction.

In one embodiment, the housing 130 is through, which facilitates assembly, the spring can be introduced into the housing after mounting the oscillating mass on the support (see Figure 6b).

As in the embodiment of FIG. 7 (FIGS. 7a and 7b), a housing 230, preferably several housings 230, may be provided on an axial end face, extending substantially perpendicular to the axis X, of the support 202, preferably on each of the two axial end faces of the support, and each receive a split annular spring 225.

Each housing 230 is arranged so that the respective spring 225 bears elastically on an axial end face of a feeder extending opposite the housing.

The actions of the springs 125 and 225 are similar to those of the springs 25 and can be adjusted in the same way. These actions advantageously make it possible to hinder the displacement of the oscillating masses with respect to the support, without hindering it.

Figures 8a and 8b show a variant of cooperation of the oscillating mass with the support. In this variant, the roll 14 is always shaped to cooperate on the one hand with a running track 12 secured to the support 2 formed by a portion of the edge of the window 19, and on the other hand with two rolling tracks 13a and 13b integral with the oscillating mass 3 and defined by a portion of an edge of lights formed in each of the weights 5a, 5b. The radially outer surface of the roller 14, or "rolling surface", cylindrical Y-axis, is divided into distinct section, each rolling on the running track secured to the support or on one of the rolling tracks integral with the oscillating mass when the running gear moves.

In the example of Figure 8b, each of the axial end faces 27, 27 'of the rolling member 11 accommodates a spring 25, 25'. The springs 25 and 25 'can be identical or similar and act in a similar manner.

As is clear now, the invention provides a simple, robust, easily adjustable solution for reducing the influence of gravity on the oscillating masses.

Of course, the invention is however not limited to the embodiments described and shown, provided for illustrative purposes only. In particular, the number of springs is not limited. The different embodiments could also be combined.

The shape of the peripheral face 34 is also not limited. In particular, the spring is not necessarily in continuous contact with the peripheral face of the housing.

The shape of the oscillating masses is also not limiting.

The number of rolling members, and in particular the number of rolling members extending in the same window of the support, is also not limiting.

Claims (10)

claims Pendulum damping device, comprising: a support (2, 102, 202) able to move in rotation about an axis (X), at least one oscillating weight (3, 103, 203), and - At least one rolling member (11, 111, 211) guiding the displacement of the oscillating mass relative to the support, the rolling member cooperating on the one hand with a running track secured to the support and on the other hand with a running track integral with the oscillating mass, the device being characterized in that it comprises a split annular spring (25, 25 ', 125, 125', 225) of axis Y, compressed towards the axis Y by a surface (34) of a first member inclined with respect to a plane (P) perpendicular to the axis Y, so that the spring is resiliently supported, along the Y axis, on a second member different from the first member, the first and second members being chosen from said at least one rolling member, the support, said at least one oscillating weight and an interposition piece (140) integral in rotation with one of the rolling members, the support and the oscillating mass. 2. Device according to the immediately preceding claim, wherein the angle of inclination (β) of the surface (34) inclined relative to said plane perpendicular to the Y axis is greater than 65 ° and less than 85 °. 3. Device according to any one of the preceding claims, wherein the slot (40) of the spring has, in a position in which the spring is not constrained, a minimum width (d) greater than 1 mm and less than 10 mm. mm. 4. Device according to any one of the preceding claims, wherein the spring bears on the first member along a first contact line (L) or a first contact surface (S), and / or takes bearing on the second member along a second contact line or a second contact surface. 5. Device according to any one of the preceding claims, wherein the inclined surface is defined by a housing (30,130,230) formed on an axial end face (27) of the rolling member or on an axial end face. of the support (4a, 4b) or on an axial end face of the oscillating mass. 6. Device according to the immediately preceding claim, wherein the housing is through. 7. Device according to any one of the preceding claims, wherein the spring has a cylindrical or polygonal section. 8. Device according to any one of the preceding claims, wherein said inclined surface is a frustoconical surface. 9. Component for a transmission system of a motor vehicle, the component being in particular a double damping flywheel, a hydrodynamic torque converter or a friction clutch disc, comprising a pendulum damping device (1) according to one of any of the preceding claims. A vehicle power train comprising: - a two-cylinder engine propulsion engine, and - a transmission system component according to the immediately preceding claim.