WO1996010704A1 - Torsional damper device - Google Patents

Torsional damper device Download PDF

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Publication number
WO1996010704A1
WO1996010704A1 PCT/FR1995/001270 FR9501270W WO9610704A1 WO 1996010704 A1 WO1996010704 A1 WO 1996010704A1 FR 9501270 W FR9501270 W FR 9501270W WO 9610704 A1 WO9610704 A1 WO 9610704A1
Authority
WO
WIPO (PCT)
Prior art keywords
damping device
damping
coupling disc
window
stops
Prior art date
Application number
PCT/FR1995/001270
Other languages
French (fr)
Inventor
Nicolas Phelps
Gino Villata
Original Assignee
Valeo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo filed Critical Valeo
Priority to JP8511466A priority Critical patent/JPH09506420A/en
Priority to DE19581291T priority patent/DE19581291T1/en
Publication of WO1996010704A1 publication Critical patent/WO1996010704A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/129—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by friction-damping means
    • F16F15/1292—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by friction-damping means characterised by arrangements for axially clamping or positioning or otherwise influencing the frictional plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
    • F16F15/127—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs using plastics springs combined with other types of springs

Definitions

  • the present invention relates to a torsion damping device comprising at least two coaxial parts, mounted to rotate relative to one another within the limits of a determined angular movement and associated with elastic pre-damping and centering means.
  • the invention relates more particularly to an improvement to a pre-damping sub-assembly intended to dampen the transmission of a torque from a hub plate to a hub forming part of a clutch friction, in particular for a motor vehicle.
  • one of the rotary parts carries a friction disc, intended to be secured in rotation with a first shaft, in practice a driving shaft, the crankshaft of the engine in the case of an application to a motor vehicle, while another of said rotary parts comprises a hub by which it is intended to be secured in rotation with a second shaft, in practice a driven shaft, the input shaft of a gearbox in the relevant case of such a motor vehicle.
  • the present invention provides a new torsional damping device, in particular for the clutch of a motor vehicle, comprising two coaxial parts with gear means with play between them defining an angular movement of said parts one relative to the other, characterized in that it has a coupling disc comprising at least one radial arm terminated by an axially oriented stud engaged in circumferential play in a window of said first part, this window being provided with damping stops and in that the coupling disc is linked in rotation, possibly after taking up a clearance, with a second of said coaxial parts, the compression of one of the damping stops by the stud taking place before the gear means with clearance formed between the two coaxial parts do not reach the end of the race.
  • the coupling disc is attached to a first of said coaxial parts, and further comprises teeth meshing with play with a toothing formed on a second of said coaxial parts, the contact between the teeth of said coupling disc and the toothing of said coaxial part taking place before the clearance gear means formed between the two coaxial parts arrive at the end of travel.
  • the coupling disc is formed by the secondary web of a pre-damping sub-assembly, said web being linked in rotation without play to said coaxial part, the contact between the stud of the coupling disc and the 'one of the damping stops lining the window of the first part taking place before the clearance gear means formed between the two coaxial parts arrive at the end of the stroke.
  • the coupling disc provides effective damping, by constituting a first level of damping, its installation being easier.
  • FIG. 1 is a partial sectional view of a torsion damping device according to the invention
  • Figure 2 is a sectional view of the central part of Figure 1 along line II-II;
  • FIG. 3 is, on a larger scale, a sectional view of Figure 2 along line III-III;
  • Figure 4 is a larger scale, a perspective view of detail IV of Figure 2;
  • - Figure 5 is, on a larger scale, a partial sectional view of Figure 2 along the line V-V;
  • FIG. 6 is a detail view illustrating another embodiment of the invention.
  • FIG. 7 is a detail view illustrating another embodiment of the invention.
  • FIGS. 1-10 illustrate by way of example the application of the invention to a torsion damping device, which, intended to constitute a clutch friction for the clutch of a motor vehicle, comprises, successively rotated two by two with respect to each other to the others, three coaxial parts, namely, a part A, consisting essentially of a hub 10, a part B, consisting essentially of a hub plate il, which surrounds the hub 10, and a part C , consisting essentially of two guide washers 12, arranged on either side of the hub cover 11 and surrounding the hub 10, linked to each other by small columns 9, and therefore driven by the same movement of rotation.
  • the coaxial part C carries a friction disc 13, the friction linings of which are intended, in known manner, to be clamped between two plates linked in rotation to a driving shaft, the engine output shaft in the relevant case of a motor vehicle.
  • the hub 10 has internal grooves 14, intended to secure it to a shaft driven in rotation, the input shaft of the associated gearbox, in the case of such a motor vehicle.
  • the coaxial parts B and C are mounted to rotate relative to one another, against elastic means interposed circumferentially between them, constituted, in the embodiment shown, by springs 15, 15a of the spring type with sausage housed in windows arranged opposite in the guide washers 12 and the hub plate 11.
  • the assembly thus formed by the coaxial parts B, C and the springs 15, 15a constitutes the main damping device clutch friction. Its operation, well known by itself, will not be described in more detail and does not fall under the present invention.
  • the coaxial parts A and B are also rotatably mounted relative to one another, against elastic pre-damping and centering means, within the limits of an angular movement determined by gear means with game 16.
  • the hub 10 has on a longitudinal portion 17 of its outer periphery radial projections 18 forming a male toothing.
  • the hub plate for its part, has, at its internal periphery, opposite the portion 17 of the hub 10, notches 19, of angular opening greater than that of the teeth 18, thus forming a female toothing, here of trapezoidal shape. like the complementary male toothing 18.
  • a tooth 18 is engaged in each notch 19, the possible angular movement between the coaxial parts A and B thus being limited by abutment of the teeth 18 of the hub 10 with the corresponding sides of the notches 19 of the sail II.
  • the teeth 18 and the notches 19 thus constitute the above-mentioned play gear means 16.
  • the device is supplemented by a pre-damping sub-assembly comprising in particular a pre-damping cassette of known type arranged between the hub plate 11 and the hub 10 within the limits of their angular clearance determined by the play gear means 16.
  • This cassette is located in a plane offset from that of the wall 11, in the axial direction by being mounted axially between the wall 11 and one of the guide washers 12.
  • It is constituted by a secondary wall 40 integral with the hub and by two flanges 31 and 32 located on either side of the secondary web 40 and connected to the hub web il by fingers 33. The fingers 33 being engaged in windows 34 of the hub web il, the flanges 31 and 32 are rotated with the hub veil there.
  • Springs 35 with circumferential action of lower stiffness than the springs 15, 15a are interposed between the flanges 31, 32, on the one hand and the secondary web 40, on the other hand, according to a conventional arrangement, that is to say -to say by being mounted in windows arranged opposite in the flanges 31,32 and the secondary web 40. They are therefore elastically stressed by a relative rotation of the hub web il and the hub 10 and tend to s' oppose this rotation.
  • a friction washer 41 can be interposed between the pre-damping cassette and the hub plate 11.
  • the pre-damping sub-assembly also comprises a rotary coupling disc 20, coaxial with the hub web 11 and with the hub 10, attached to the hub web 11 on the opposite side to the pre-amortization cassette.
  • This rotary coupling disc can be made of metal or synthetic material, such as plastic.
  • Said rotary coupling disc 20 has two radial arms 21 which extend from its outer periphery. At the end of each of these radial arms 21 is a projection which extends perpendicular to said arm, in the direction of the hub web 11, so as to form a stud 22, of axial orientation.
  • windows 23 are provided in the hub plate 11; the axial pads 22 are engaged with circumferential clearance, according to a characteristic of the invention, in these windows 23.
  • the windows 23 are delimited radially by two portions of concentric arcs.
  • the length of these portions of an arc of a circle is greater than the width of the stud, so that it can move in the window 23, thus allowing an angular movement of the rotary coupling disc 20 relative to the hub disc 11.
  • the displacement of the stud 22 is guided by the edges with a portion of an arc of a circle of the window 23. It is the same in the other figures.
  • Two damping stops 24 are arranged at the ends of each window 23.
  • the stops 24 are fitted with clipping edges 25, adapted to cooperate with the edge of the window 23.
  • the mounting of these stops 24 is therefore easy.
  • the stops 24 are made of elastomer.
  • the stud 22 has a generally triangular section, one side of which is substantially parallel to the portions of an arc of a circle delimiting window 23. This side is slightly rounded to better match the shape of window 23.
  • the other two sides of the triangular section constitute the leading faces 27 of the stud, the stops 24 having contact faces 28 oriented so as to be substantially parallel to the leading faces 27 of the stud during the impact of the coupling disc 20 on the hub plate.
  • each leading face 27 of the pad 22, intended to come into contact with the damping stops 24, are shaped so as to allow a certain progressive engagement with each damping stop 24.
  • each leading face 27 has two facets which meet around the middle of the leading face 27 by forming a slight protruding edge.
  • the studs 22 are mounted with circumferential clearance in the windows 23 as in the other figures.
  • the latter may have a central narrowing, as shown in FIGS. 6 and.
  • spaces 26 are provided between the damping stops 24 and the window 23.
  • the damping stops 24 when the axial stud 22 crushes the stop 24, the latter can deform more easily. This results in better damping and less wear of the elastomer subjected to lower stresses.
  • the rotary coupling disc 20 of FIGS. 1 to 7 further comprises a female toothing 30, opposite the teeth 18 of the male toothing of the hub 10, similar to that of the hub web 11 but having notches 30 which are narrower than the notches 19 formed on the hub plate there.
  • a tooth 18 of the hub 10 is engaged in each notch 30 of the disc of rotary coupling 20, constituting a play gear between said disc 20 and said hub 10.
  • the notches 30 being narrower than the notches 19, the contact between the teeth 18 of the hub 10 and the notches 30 occurs before the engagement between the teeth 18 and the sides of the notches 19.
  • the radial arms 21 of the coupling disc 20 are then driven towards an end of travel position in the windows 23, the shock being absorbed by the stops 24.
  • the teeth 18 of the hub 10 can then come into contact with the notches 19, so as to allow the transmission of a torque of rotation between the hub cover 11 and the hub 10.
  • the use of a rotary coupling disc makes it possible to provide blocks of elastomer, the stops 24, more substantial than if they were to be placed directly on the cover hub 11 or hub 10.
  • the presence of the stops 24 modify the way in which the web resonates and limits the noise. This pre-damping is particularly effective because the elastomer is under stress when the veil tends to make noise.
  • the coupling disc 20 is urged against the surface of the web 11 by means of a support washer 42, by means of a Belleville washer 43 itself inserted under stress between the support washer and a guide washer 12.
  • the coupling disc 20 therefore acts as a friction washer of a dry friction arrangement disposed between the parts B and c defined above.
  • the stops 24 advantageously have a greater stiffness than that of the springs 35.
  • the secondary hub 40 can be provided at its external periphery with two radial arms 121 at the end of which is a stud 22 of axial orientation engaged in circumferential clearance in the window 23 as in the previous figures.
  • the coupling disc is therefore replaced by the secondary hub 40.
  • the arms 121 each extend between two consecutive fingers 33.
  • the fingers 33 come from the flange 31 and are each engaged in a notch made to do this at the external periphery of the flange 32.
  • the fingers 32 have a spherical deformation so that the flange 31 is mounted, in a manner known per se, after assembly of the secondary means 40 and the springs
  • the secondary web 40 has at its internal periphery a female toothing complementary to the male toothing 18 of the hub. To do this, it will be noted that the radial projections 18 as well as the longitudinal portion 17 are stepped for axial setting of the web 40 in one direction. In the other direction, the web 40 is fixed axially by crimping. The web 40 is thus integral in rotation with the hub 10 by its teeth, and also axially by crimping the hub 10.
  • the springs 35 are also mounted in windows arranged facing one another in the flanges 31, 32 and the secondary web 40.
  • the windows 23 are located radially above the windows 34 and radially below the windows of the web 11 allowing the passage of the columns 9 ( Figures 1 and 2). These windows 23 are installed circumferentially between two consecutive windows for housing the springs 15, 15a.
  • the pre-depreciation sub-assembly can be of the type described in document FR-A-2 496 210.
  • each stop 24 can be constituted by an insert partially covering the veil there for its maintenance.
  • the structure can be inverted between the damping stops 24 and the studs. More specifically, the stops 24 can be glued to the pads 22 themselves. These stops 24 also line the window 23 as in the previous figures.
  • the studs 22 crush (compress) the stops 24 before the play gear means arrive at the end of the stroke.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

A torsional damper device, in particular for a motor vehicle clutch. The device has a coupling disc (20) with at least one radial arm (21) ending in a projection (22) which is fitted in a window in a hub disc provided with damping stops (24).

Description

"Dispositif d'amortissement de torsion" "Torsion damping device"
La présente invention concerne un dispositif d'amortissement de torsion comportant au moins deux parties coaxiales, montées rotatives l'une par rapport à l'autre dans les limites d'un débattement angulaire déterminé et associées à des moyens élastiques de préamortissement et de centrage.The present invention relates to a torsion damping device comprising at least two coaxial parts, mounted to rotate relative to one another within the limits of a determined angular movement and associated with elastic pre-damping and centering means.
L'invention concerne plus particulièrement un perfectionnement à un sous-ensemble de préamortissement destiné à amortir la transmission d'un couple de rotation d'un voile de moyeu à un moyeu faisant partie d'une friction d'embrayage, notamment pour véhicule automobile.The invention relates more particularly to an improvement to a pre-damping sub-assembly intended to dampen the transmission of a torque from a hub plate to a hub forming part of a clutch friction, in particular for a motor vehicle.
Dans un dispositif d'amortissement de torsion connu l'une des parties rotatives porte un disque de friction, destiné à être solidarisé en rotation avec un premier arbre, en pratique un arbre menant, le vilebrequin du moteur dans le cas d'une application à un véhicule automobile, tandis qu'une autre desdites parties rotatives comporte un moyeu par lequel elle est destinée à être solidarisée en rotation avec un deuxième arbre, en pratique un arbre mené, l'arbre d'entrée d'une boîte de vitesses dans le cas concerné d'un tel véhicule automobile.In a known torsion damping device, one of the rotary parts carries a friction disc, intended to be secured in rotation with a first shaft, in practice a driving shaft, the crankshaft of the engine in the case of an application to a motor vehicle, while another of said rotary parts comprises a hub by which it is intended to be secured in rotation with a second shaft, in practice a driven shaft, the input shaft of a gearbox in the relevant case of such a motor vehicle.
Dans un tel ensemble, il est aussi connu d'ajouter un sous- ensemble de préamortissement de torsion dans lequel la délimitation du débattement angulaire entre les deux parties coaxiales est assurée par des moyens d'engrenement à jeu munis de petits plots, réalisés en élastomère, placés sur la denture d'engrenement à jeu d'une des parties coaxiales, contre lesquels viennent buter les dents de l'autre partie coaxiale, pour réduire le bruit des chocs de fin de course des moyens d'engrenement à jeu, comme décrit dans le document FR-A-2 496 210.In such an assembly, it is also known to add a pre-damping torsion sub-assembly in which the delimitation of the angular clearance between the two coaxial parts is ensured by play gear means provided with small studs, made of elastomer , placed on the backlash gear teeth of one of the coaxial parts, against which the teeth of the other coaxial part abut, to reduce the noise of end-of-travel impacts of the backlash gear means, as described in document FR-A-2 496 210.
Cette solution présente néanmoins des inconvénients. De par leur taille réduite, les plots n'assurent en effet qu'un amortissement ponctuel, d'où un bruit résiduel qui ne peut être éliminé. De plus, la durée de vie de ces éléments en élastomère est limitée.This solution nevertheless has drawbacks. Due to their reduced size, the studs only provide punctual damping, resulting in a residual noise that cannot to be eliminated. In addition, the life of these elastomeric elements is limited.
Pour pallier ces inconvénients, la présente invention propose un nouveau dispositif amortisseur de torsion, notamment pour embrayage de véhicule automobile, comportant deux parties coaxiales avec des moyens d'engrenement à jeu entre elles définissant un débattement angulaire desdites parties l'une par rapport à l'autre, caractérisé en ce qu'il présente un disque de couplage comportant au moins un bras radial terminé par un plot d'orientation axiale engagé à jeu circonferentiel dans une fenêtre de ladite première partie, cette fenêtre étant garnie de butées d'amortissement et en ce que le disque de couplage est lié en rotation, éventuellement après rattrapage d'un jeu, avec une seconde desdites parties coaxiales, la compression de l'une des butées d'amortissement par le plot ayant lieu avant que les moyens d'engrenement à jeu constitués entre les deux parties coaxiales n'arrivent en fin de course.To overcome these drawbacks, the present invention provides a new torsional damping device, in particular for the clutch of a motor vehicle, comprising two coaxial parts with gear means with play between them defining an angular movement of said parts one relative to the other, characterized in that it has a coupling disc comprising at least one radial arm terminated by an axially oriented stud engaged in circumferential play in a window of said first part, this window being provided with damping stops and in that the coupling disc is linked in rotation, possibly after taking up a clearance, with a second of said coaxial parts, the compression of one of the damping stops by the stud taking place before the gear means with clearance formed between the two coaxial parts do not reach the end of the race.
Dans une forme de réalisation, le disque de couplage est accolé à une première desdites parties coaxiales, et comporte de plus des dents engrenant à jeu avec une denture constituée sur une seconde desdites parties coaxiales, le contact entre les dents dudit disque de couplage et la denture de ladite partie coaxiale ayant lieu avant que les moyens d'engrenement à jeu constitués entre les deux parties coaxiales n'arrivent en fin de course.In one embodiment, the coupling disc is attached to a first of said coaxial parts, and further comprises teeth meshing with play with a toothing formed on a second of said coaxial parts, the contact between the teeth of said coupling disc and the toothing of said coaxial part taking place before the clearance gear means formed between the two coaxial parts arrive at the end of travel.
Dans une autre forme de réalisation, le disque de couplage est constitué par le voile secondaire d'un sous-ensemble de préamortiεsement, ledit voile étant lié en rotation sans jeu à ladite partie coaxiale, le contact entre le plot du disque de couplage et l'une des butées d'amortissement garnissant la fenêtre de la première partie ayant lieu avant que les moyens d'engrenement à jeu constitués entre les deux parties coaxiales n'arrivent en fin de course. Le disque de couplage assure un amortissement efficace, en constituant un premier niveau d'amortissement, sa mise en place étant de plus aisée.In another embodiment, the coupling disc is formed by the secondary web of a pre-damping sub-assembly, said web being linked in rotation without play to said coaxial part, the contact between the stud of the coupling disc and the 'one of the damping stops lining the window of the first part taking place before the clearance gear means formed between the two coaxial parts arrive at the end of the stroke. The coupling disc provides effective damping, by constituting a first level of damping, its installation being easier.
D'autres caractéristiques et avantages de l'invention ressortiront d'ailleurs de la description qui va suivre, à titre d'exemple, en référence aux dessins sur lesquels: la figure 1 est une vue partielle en coupe d'un dispositif amortisseur de torsion suivant l'invention;Other characteristics and advantages of the invention will emerge from the description which follows, by way of example, with reference to the drawings in which: FIG. 1 is a partial sectional view of a torsion damping device according to the invention;
- la figure 2 est une vue en coupe de la partie centrale de la figure 1 suivant la ligne II-II;- Figure 2 is a sectional view of the central part of Figure 1 along line II-II;
- la figure 3 est, à échelle supérieure, une vue en coupe de la figure 2 suivant la ligne III-III; la figure 4 est, à échelle supérieure, une vue en perspective du détail IV de la figure 2; - la figure 5 est, à échelle supérieure, une vue partielle en coupe de la figure 2 selon la ligne V-V;- Figure 3 is, on a larger scale, a sectional view of Figure 2 along line III-III; Figure 4 is a larger scale, a perspective view of detail IV of Figure 2; - Figure 5 is, on a larger scale, a partial sectional view of Figure 2 along the line V-V;
- la figure 6 est une vue de détail illustrant un autre mode de réalisation de l'invention; et- Figure 6 is a detail view illustrating another embodiment of the invention; and
- la figure 7 est une vue de détail illustrant un autre mode de réalisation de l'invention.- Figure 7 is a detail view illustrating another embodiment of the invention.
Ces figures illustrent à titre d'exemple l'application de l'invention à un dispositif amortisseur de torsion, qui, destiné à constituer une friction d'embrayage pour embrayage de véhicule automobile, comporte, successivement montées rotatives deux à deux les unes par rapport aux autres, trois parties coaxiales, à savoir, une partie A, constituée pour l'essentiel par un moyeu 10, une partie B, constituée pour l'essentiel par un voile de moyeu il, qui entoure le moyeu 10, et une partie C, constituée pour l'essentiel par deux rondelles de guidage 12, disposées de part et d'autre du voile de moyeu 11 et entourant le moyeu 10, liées l'une à l'autre par des colonnettes 9, et donc animées du même mouvement de rotation. La partie coaxiale C porte un disque de friction 13, dont les garnitures de frottement sont destinées, de manière connue, à être serrées entre deux plateaux liés en rotation à un arbre menant, l'arbre de sortie du moteur dans le cas concerné d'un véhicule automobile.These figures illustrate by way of example the application of the invention to a torsion damping device, which, intended to constitute a clutch friction for the clutch of a motor vehicle, comprises, successively rotated two by two with respect to each other to the others, three coaxial parts, namely, a part A, consisting essentially of a hub 10, a part B, consisting essentially of a hub plate il, which surrounds the hub 10, and a part C , consisting essentially of two guide washers 12, arranged on either side of the hub cover 11 and surrounding the hub 10, linked to each other by small columns 9, and therefore driven by the same movement of rotation. The coaxial part C carries a friction disc 13, the friction linings of which are intended, in known manner, to be clamped between two plates linked in rotation to a driving shaft, the engine output shaft in the relevant case of a motor vehicle.
Le moyeu 10 présente quant à lui des cannelures intérieures 14, destinées à le solidariser à un arbre mené en rotation, l'arbre d'entrée de la boîte de vitesses associée, dans le cas d'un tel véhicule automobile.The hub 10 has internal grooves 14, intended to secure it to a shaft driven in rotation, the input shaft of the associated gearbox, in the case of such a motor vehicle.
Les parties coaxiales B et C sont montées rotatives l'une par rapport à l'autre, à l'encontre de moyens élastiques interposés circonférentiellement entre elles, constitués, dans la forme de réalisation représentée, par des ressorts 15, 15a du type ressorts à boudin logés dans des fenêtres ménagées en vis- à-vis dans les rondelles de guidage 12 et le voile de moyeu 11. L'ensemble ainsi constitué par les parties coaxiales B, C et les ressorts 15, 15a constitue le dispositif d'amortissement principal de la friction d'embrayage. Son fonctionnement, bien connu par lui-même, ne sera pas décrit plus en détail et ne relève pas de la présente invention.The coaxial parts B and C are mounted to rotate relative to one another, against elastic means interposed circumferentially between them, constituted, in the embodiment shown, by springs 15, 15a of the spring type with sausage housed in windows arranged opposite in the guide washers 12 and the hub plate 11. The assembly thus formed by the coaxial parts B, C and the springs 15, 15a constitutes the main damping device clutch friction. Its operation, well known by itself, will not be described in more detail and does not fall under the present invention.
Les parties coaxiales A et B sont elles aussi montées rotatives l'une par rapport à l'autre, à l'encontre de moyens élastiques de préamortissement et de centrage, dans les limites d'un débattement angulaire déterminé par des moyens d'engrenement à jeu 16.The coaxial parts A and B are also rotatably mounted relative to one another, against elastic pre-damping and centering means, within the limits of an angular movement determined by gear means with game 16.
En pratique, le moyeu 10 présente sur une portion longitudinale 17 de sa périphérie externe des saillies radiales 18 formant une denture mâle. Le voile de moyeu il présente quant à lui, à sa périphérie interne, en regard de la portion 17 du moyeu 10, des échancrures 19, d'ouverture angulaire supérieure à celle des dents 18, formant ainsi une denture femelle, ici de forme trapézoïdale comme la denture mâle complémentaire 18. Une dent 18 est engagée dans chaque échancrure 19, le débattement angulaire possible entre les parties coaxiales A et B se trouvant ainsi limité par venue en butée des dents 18 du moyeu 10 avec les flancs correspondants des échancrures 19 du voile II. Les dents 18 et les échancrures 19 constituent ainsi les moyens d'engrenement à jeu 16 précités.In practice, the hub 10 has on a longitudinal portion 17 of its outer periphery radial projections 18 forming a male toothing. The hub plate, for its part, has, at its internal periphery, opposite the portion 17 of the hub 10, notches 19, of angular opening greater than that of the teeth 18, thus forming a female toothing, here of trapezoidal shape. like the complementary male toothing 18. A tooth 18 is engaged in each notch 19, the possible angular movement between the coaxial parts A and B thus being limited by abutment of the teeth 18 of the hub 10 with the corresponding sides of the notches 19 of the sail II. The teeth 18 and the notches 19 thus constitute the above-mentioned play gear means 16.
Le dispositif est complété par un sous-ensemble de préamortissement comprenant notamment une cassette de préamortissement de type connu agencée entre le voile de moyeu 11 et le moyeu 10 dans les limites de leur débattement angulaire détermine par les moyens d'engrenement à jeu 16. Cette cassette est située dans un plan décalé de celui du voile il, selon la direction axiale en étant montée axialement entre le voile 11 et l'une des rondelles de guidage 12. Elle est constituée par un voile secondaire 40 solidaire du moyeu et par deux flasques 31 et 32 situés de part et d'autre du voile secondaire 40 et raccordés au voile de moyeu il par des doigts 33. Les doigts 33 étant engagés dans des fenêtres 34 du voile de moyeu il, les flasques 31 et 32 sont entraînés en rotation avec le voile de moyeu il. Des ressorts 35 à action circonférentielle de plus faible raideur que les ressorts 15, 15a sont intercalés entre les flasques 31, 32, d'une part et le voile secondaire 40, d'autre part, selon une disposition classique, c'est-à-dire en étant montés dans des fenêtres ménagées en vis-à-vis dans les flasques 31,32 et le voile secondaire 40. Ils sont donc sollicités élastiquement par une rotation relative du voile de moyeu il et du moyeu 10 et tendent à s'opposer à cette rotation.The device is supplemented by a pre-damping sub-assembly comprising in particular a pre-damping cassette of known type arranged between the hub plate 11 and the hub 10 within the limits of their angular clearance determined by the play gear means 16. This cassette is located in a plane offset from that of the wall 11, in the axial direction by being mounted axially between the wall 11 and one of the guide washers 12. It is constituted by a secondary wall 40 integral with the hub and by two flanges 31 and 32 located on either side of the secondary web 40 and connected to the hub web il by fingers 33. The fingers 33 being engaged in windows 34 of the hub web il, the flanges 31 and 32 are rotated with the hub veil there. Springs 35 with circumferential action of lower stiffness than the springs 15, 15a are interposed between the flanges 31, 32, on the one hand and the secondary web 40, on the other hand, according to a conventional arrangement, that is to say -to say by being mounted in windows arranged opposite in the flanges 31,32 and the secondary web 40. They are therefore elastically stressed by a relative rotation of the hub web il and the hub 10 and tend to s' oppose this rotation.
Une rondelle de frottement 41 peut être intercalée entre la cassette de préamortissement et le voile de moyeu il.A friction washer 41 can be interposed between the pre-damping cassette and the hub plate 11.
Le fonctionnement d'une telle cassette de préamortissement est connu en soi et ne sera pas décrit plus en détail. Pour mémoire, on rappellera que les ressorts 35 sont comprimés dans une première phase, le dispositif d'amortissement principal formant un bloc par l'intermédiaire des ressorts 15, 15a. Après rattrapage du jeu des moyens d'engrenement à jeu 16, les ressorts bandés et les ressorts 15, 15a sont comprimés par la suite. Selon une caractéristique importante de l'invention, dans une forme de réalisation, le sous-ensemble de préamortissement comprend aussi un disque de couplage rotatif 20, coaxial au voile de moyeu il et au moyeu 10, accolé au voile de moyeu 11 du côté opposé à la cassette de préamortissement.The operation of such a pre-damping cassette is known per se and will not be described in more detail. As a reminder, it will be recalled that the springs 35 are compressed in a first phase, the main damping device forming a block by means of the springs 15, 15a. After taking up the play in the play gear 16, the banded springs and the springs 15, 15a are subsequently compressed. According to an important characteristic of the invention, in one embodiment, the pre-damping sub-assembly also comprises a rotary coupling disc 20, coaxial with the hub web 11 and with the hub 10, attached to the hub web 11 on the opposite side to the pre-amortization cassette.
Ce disque de couplage rotatif peut être constitué en métal ou en matière synthétique, telle que de la matière plastique.This rotary coupling disc can be made of metal or synthetic material, such as plastic.
Ledit disque de couplage rotatif 20 comporte deux bras radiaux 21 qui s'étendent depuis sa périphérie externe. A l'extrémité de chacun de ces bras radiaux 21 se trouve une saillie qui s'étend perpendiculairement audit bras, dans la direction du voile de moyeu 11, de sorte à former un plot 22, d'orientation axiale.Said rotary coupling disc 20 has two radial arms 21 which extend from its outer periphery. At the end of each of these radial arms 21 is a projection which extends perpendicular to said arm, in the direction of the hub web 11, so as to form a stud 22, of axial orientation.
En regard de ces plots 22, des fenêtres 23 sont ménagées dans le voile de moyeu 11; les plots axiaux 22 sont engagés à jeu circonferentiel, selon une caractéristique de l'invention, dans ces fenêtres 23.Opposite these studs 22, windows 23 are provided in the hub plate 11; the axial pads 22 are engaged with circumferential clearance, according to a characteristic of the invention, in these windows 23.
Plus précisément, les fenêtres 23 sont délimitées radialement par deux portions d'arc de cercle concentriques. La longueur de ces portions d'arc de cercle est plus importante que la largeur du plot, de sorte que celui-ci puisse se déplacer dans la fenêtre 23, autorisant ainsi un débattement angulaire du disque de couplage rotatif 20 par rapport au voile de moyeu 11. Le déplacement du plot 22 est guidé par les bords à portion d'arc de cercle de la fenêtre 23. Il en est de même dans les autres figures.More precisely, the windows 23 are delimited radially by two portions of concentric arcs. The length of these portions of an arc of a circle is greater than the width of the stud, so that it can move in the window 23, thus allowing an angular movement of the rotary coupling disc 20 relative to the hub disc 11. The displacement of the stud 22 is guided by the edges with a portion of an arc of a circle of the window 23. It is the same in the other figures.
Deux butées d'amortissement 24 sont disposées aux extrémités de chaque fenêtre 23. Les butées 24 sont garnies de rebords de clipsage 25, adaptés à coopérer avec le bord de la fenêtre 23. Le montage de ces butées 24 est donc aisé. De préférence, les butées 24 sont réalisées en élastomère.Two damping stops 24 are arranged at the ends of each window 23. The stops 24 are fitted with clipping edges 25, adapted to cooperate with the edge of the window 23. The mounting of these stops 24 is therefore easy. Preferably, the stops 24 are made of elastomer.
Selon un mode de réalisation représenté aux figures 2, 4 et 6, le plot 22 présente une section globalement triangulaire dont un côté est sensiblement parallèle aux portions d'arc de cercle délimitant la fenêtre 23. Ce côté est légèrement bombé pour mieux épouser la forme de la fenêtre 23.According to an embodiment shown in Figures 2, 4 and 6, the stud 22 has a generally triangular section, one side of which is substantially parallel to the portions of an arc of a circle delimiting window 23. This side is slightly rounded to better match the shape of window 23.
Les deux autres côtés de la section triangulaire constituent les faces d'attaque 27 du plot, les butées 24 présentant des faces de contact 28 orientées pour être sensiblement parallèles aux faces d'attaque 27 du plot lors de l'impact du disque de couplage 20 sur le voile de moyeu.The other two sides of the triangular section constitute the leading faces 27 of the stud, the stops 24 having contact faces 28 oriented so as to be substantially parallel to the leading faces 27 of the stud during the impact of the coupling disc 20 on the hub plate.
Selon une variante représentée sur la figure 7, les faces d'attaque 27 du plot 22, destinées à venir en contact avec les butées d'amortissement 24, sont conformées de manière à permettre une certaine progressivité d'engagement avec chaque butée d'amortissement 24. Selon ce mode de réalisation, chaque face d'attaque 27 présente deux facettes qui se rejoignent aux environs du milieu de la face d'attaque 27 en formant une légère arête en saillie. Les plots 22 sont montés à jeu circonferentiel dans les fenêtres 23 comme dans les autres figures.According to a variant shown in Figure 7, the leading faces 27 of the pad 22, intended to come into contact with the damping stops 24, are shaped so as to allow a certain progressive engagement with each damping stop 24. According to this embodiment, each leading face 27 has two facets which meet around the middle of the leading face 27 by forming a slight protruding edge. The studs 22 are mounted with circumferential clearance in the windows 23 as in the other figures.
Selon un autre mode de réalisation, ce sont les faces d'attaque des butées 24 qui pourraient être ainsi conformées.According to another embodiment, these are the leading faces of the stops 24 which could be thus shaped.
Afin de maintenir les butées 24 à chaque extrémité de la fenêtre 23, celle-ci peut présenter un rétrécissement central, comme représenté sur les figures 6 et .In order to maintain the stops 24 at each end of the window 23, the latter may have a central narrowing, as shown in FIGS. 6 and.
Selon un mode de réalisation, représenté à la figure 7, des espaces 26 sont ménagés entre les butées d'amortissement 24 et la fenêtre 23. Dans ce cas, lorsque le plot axial 22 écrase la butée 24, celle-ci peut se déformer plus facilement. Il en résulte un meilleur amortissement et une moindre usure de 1'élastomère soumis à des contraintes plus faibles.According to one embodiment, shown in FIG. 7, spaces 26 are provided between the damping stops 24 and the window 23. In this case, when the axial stud 22 crushes the stop 24, the latter can deform more easily. This results in better damping and less wear of the elastomer subjected to lower stresses.
Le disque de couplage rotatif 20 des figures 1 à 7 comporte en outre une denture femelle 30, en regard des dents 18 de la denture mâle du moyeu 10, analogue à celle du voile de moyeu il mais présentant des échancrures 30 moins larges que les échancrures 19 constituées sur le voile de moyeu il. Une dent 18 du moyeu 10 est engagée dans chaque échancrure 30 du disque de couplage rotatif 20, constituant un moyen d'engrenement à jeu entre ledit disque 20 et ledit moyeu 10.The rotary coupling disc 20 of FIGS. 1 to 7 further comprises a female toothing 30, opposite the teeth 18 of the male toothing of the hub 10, similar to that of the hub web 11 but having notches 30 which are narrower than the notches 19 formed on the hub plate there. A tooth 18 of the hub 10 is engaged in each notch 30 of the disc of rotary coupling 20, constituting a play gear between said disc 20 and said hub 10.
Lorsque le voile de moyeu 11 et le moyeu 10 sont animés d'un mouvement angulaire l'un par rapport à l'autre, les dents 18 se déplacent dans les échancrures 19 et 30.When the hub web 11 and the hub 10 are moved in an angular movement relative to each other, the teeth 18 move in the notches 19 and 30.
Les échancrures 30 étant moins larges que les échancrures 19, le contact entre les dents 18 du moyeu 10 et les échancrures 30 se produit avant l'engagement entre les dents 18 et les flancs des échancrures 19. Les bras radiaux 21 du disque de couplage 20 sont alors entraînés vers une position de fin de course dans les fenêtres 23, le choc étant amorti par les butées 24. Les dents 18 du moyeu 10 peuvent alors venir en contact avec les échancrures 19, de manière à permettre la transmission d'un couple de rotation entre le voile de moyeu 11 et le moyeu 10. L'utilisation d'un disque de couplage rotatif permet de ménager des blocs d*élastomère, les butées 24, plus conséquents que s'ils devaient être directement placés sur le voile de moyeu 11 ou le moyeu 10.The notches 30 being narrower than the notches 19, the contact between the teeth 18 of the hub 10 and the notches 30 occurs before the engagement between the teeth 18 and the sides of the notches 19. The radial arms 21 of the coupling disc 20 are then driven towards an end of travel position in the windows 23, the shock being absorbed by the stops 24. The teeth 18 of the hub 10 can then come into contact with the notches 19, so as to allow the transmission of a torque of rotation between the hub cover 11 and the hub 10. The use of a rotary coupling disc makes it possible to provide blocks of elastomer, the stops 24, more substantial than if they were to be placed directly on the cover hub 11 or hub 10.
De plus, la présence des butées 24 modifient la manière de résonner du voile et limite le bruit. Ce préamortissement est particulièrement efficace car l'élastomère est sous contrainte au moment où le voile a tendance à faire du bruit.In addition, the presence of the stops 24 modify the way in which the web resonates and limits the noise. This pre-damping is particularly effective because the elastomer is under stress when the veil tends to make noise.
On remarque que le disque de couplage 20 est sollicité contre la surface du voile il par l'intermédiaire d'une rondelle d'appui 42, au moyen d'une rondelle Belleville 43 elle-même intercalée sous contrainte entre la rondelle d'appui et une rondelle de guidage 12. Le disque de couplage 20 fait donc office de rondelle de frottement d'un agencement de frottement sec disposé entre les parties B et c définies ci-dessus. Ainsi, après rattrapage du jeu circonferentiel entre les dents 18 et les échancrures 30 du disque 20, on augmente le nombre de faces de frottement, le disque 20 frottant contre le voile 11 et contre la rondelle 42 liée en rotation par des pions à la rondelle de guidage 12 concernée (figure 1) . On notera que les butées 24 ont avantageusement une raideur plus importante que celle des ressorts 35.It will be noted that the coupling disc 20 is urged against the surface of the web 11 by means of a support washer 42, by means of a Belleville washer 43 itself inserted under stress between the support washer and a guide washer 12. The coupling disc 20 therefore acts as a friction washer of a dry friction arrangement disposed between the parts B and c defined above. Thus, after taking up the circumferential clearance between the teeth 18 and the notches 30 of the disc 20, the number of friction faces is increased, the disc 20 rubbing against the web 11 and against the washer 42 linked in rotation by pins to the washer guide 12 concerned (Figure 1). It will be noted that the stops 24 advantageously have a greater stiffness than that of the springs 35.
En variante, comme visible à la figure 8, le moyeu 40 secondaire peut être doté à sa périphérie externe des deux bras radiaux 121 à l'extrémité desquels, se trouve un plot 22 d'orientation axiale engagé à jeu circonferentiel dans la fenêtre 23 comme dans les figures précédentes. Le disque de couplage est donc remplacé par le moyeu secondaire 40.As a variant, as visible in FIG. 8, the secondary hub 40 can be provided at its external periphery with two radial arms 121 at the end of which is a stud 22 of axial orientation engaged in circumferential clearance in the window 23 as in the previous figures. The coupling disc is therefore replaced by the secondary hub 40.
Les bras 121 s'étendent chacun entre deux doigts 33 consécutifs. Ici, dans les figures 1, 3 et 8, les doigts 33 sont issus du flasque 31 et sont engagés chacun dans une échancrure pratiquée pour ce faire à la périphérie externe du flasque 32.The arms 121 each extend between two consecutive fingers 33. Here, in FIGS. 1, 3 and 8, the fingers 33 come from the flange 31 and are each engaged in a notch made to do this at the external periphery of the flange 32.
Centralement, les doigts 32 présentent une déformation sphérique en sorte que l'on monte, de manière connue en soi le flasque 31, après montage du moyen secondaire 40 et des ressortsCentrally, the fingers 32 have a spherical deformation so that the flange 31 is mounted, in a manner known per se, after assembly of the secondary means 40 and the springs
35, par clipsage sur le flasque 32, ici métallique tout comme le flasque 31.35, by clipping onto the flange 32, here metallic just like the flange 31.
Le voile secondaire 40 présente à sa périphérie interne une denture femelle complémentaire à la denture mâle 18 du moyeu. On notera pour ce faire que les saillies radiales 18 ainsi que la portion longitudinale 17 sont étagées pour calage axial du voile 40 dans un sens. Dans l'autre sens, le voile 40 est calé axialement par sertissage. Le voile 40 est ainsi solidaire en rotation du moyeu 10 par sa denture, et également axialement par sertissage du moyeu 10.The secondary web 40 has at its internal periphery a female toothing complementary to the male toothing 18 of the hub. To do this, it will be noted that the radial projections 18 as well as the longitudinal portion 17 are stepped for axial setting of the web 40 in one direction. In the other direction, the web 40 is fixed axially by crimping. The web 40 is thus integral in rotation with the hub 10 by its teeth, and also axially by crimping the hub 10.
Lors du débattement relatif entre le voile 11 et le moyeu, les plots 22 entrent en contact avec les butées 24 concernées avant que le jeu des moyens d'engrenement à jeu soit annulé.During the relative movement between the web 11 and the hub, the studs 22 come into contact with the stops 24 concerned before the play of the play gear means is canceled.
Ensuite, comme dans les figures précédentes, un mouvement relatif se produit entre les rondelles de guidage 12 et le voileThen, as in the previous figures, a relative movement occurs between the guide washers 12 and the web
11 avec intervention des ressorts 15, 15a montés dans des fenêtres ménagées en vis-à-vis dans les rondelles 12 et le voile11 with intervention of the springs 15, 15a mounted in windows arranged opposite in the washers 12 and the web
11. Les ressorts 35 sont montés également dans des fenêtres ménagées en vis-à-vis dans les flasques 31, 32 et le voile secondaire 40.11. The springs 35 are also mounted in windows arranged facing one another in the flanges 31, 32 and the secondary web 40.
On notera que les fenêtres 23 sont implantées radialement au-dessus des fenêtres 34 et radialement en-dessous des fenêtres du voile 11 permettant le passage des colonnettes 9 (figures 1 et 2) . Ces fenêtres 23 sont implantées circonférentiellement entre deux fenêtres consécutives de logement des ressorts 15, 15a. Bien entendu, le sous-ensemble de préamortissement peut être du type de celui décrit dans le document FR-A-2 496 210.Note that the windows 23 are located radially above the windows 34 and radially below the windows of the web 11 allowing the passage of the columns 9 (Figures 1 and 2). These windows 23 are installed circumferentially between two consecutive windows for housing the springs 15, 15a. Of course, the pre-depreciation sub-assembly can be of the type described in document FR-A-2 496 210.
Enfin, en variante, chaque butée 24 peut être constituée par un insert recouvrant partiellement le voile il pour son maintien. L'inversion de structure est possible entre les butées d'amortissement 24 et les plots. Plus précisément, les butées 24 peuvent être collées sur les plots 22 eux-mêmes. Ces butées 24 garnissent également la fenêtre 23 comme dans les figures précédentes. Les plots 22 écrasent (compriment) les butées 24 avant que les moyens d'engrenement à jeu n'arrivent en fin de course. Finally, as a variant, each stop 24 can be constituted by an insert partially covering the veil there for its maintenance. The structure can be inverted between the damping stops 24 and the studs. More specifically, the stops 24 can be glued to the pads 22 themselves. These stops 24 also line the window 23 as in the previous figures. The studs 22 crush (compress) the stops 24 before the play gear means arrive at the end of the stroke.

Claims

REVENDICATIONS
1- Dispositif amortisseur de torsion, notamment pour embrayage de véhicule automobile, comportant deux parties coaxiales (A, B) avec des moyens d'engrenement à jeu (16) entre elles définissant un débattement angulaire desdites parties l'une par rapport à l'autre, caractérisé en ce qu'il présente un disque de couplage (20,40) comportant au moins un bras radial (21,121) terminé par un plot d'orientation axiale (22) engagé à jeu circonferentiel dans une fenêtre (23) de ladite première partie (B) , cette fenêtre étant garnie de butées d'amortissement1- Torsional damping device, in particular for the clutch of a motor vehicle, comprising two coaxial parts (A, B) with gear means with clearance (16) between them defining an angular movement of said parts one relative to the another, characterized in that it has a coupling disc (20.40) comprising at least one radial arm (21.121) terminated by an axially oriented stud (22) engaged in circumferential play in a window (23) of said first part (B), this window being fitted with damping stops
(24) et en ce que le disque de couplage (20,40) est lié en rotation, éventuellement après rattrapage d'un jeu, avec une seconde (A) desdites parties coaxiales, la compression de l'une des butées d'amortissement (24) par le plot (22) ayant lieu avant que les moyens d'engrenement à jeu (16) constitués entre les deux parties coaxiales n'arrivent en fin de course.(24) and in that the coupling disc (20.40) is linked in rotation, possibly after taking up a clearance, with a second (A) of said coaxial parts, the compression of one of the damping stops (24) by the stud (22) taking place before the play gear means (16) formed between the two coaxial parts arrive at the end of the stroke.
2- Dispositif amortisseur de torsion selon la revendication 1, caractérisé en ce que le déplacement du plot (22) est guidé par les bords en portion d'arc de cercle de la fenêtre (23) .2- torsional damping device according to claim 1, characterized in that the displacement of the stud (22) is guided by the edges in the portion of an arc of a circle of the window (23).
3- Dispositif amortisseur de torsion selon la revendication 1, caractérisé en ce que ledit disque de couplage (20) est accolé à une première desdites parties coaxiales et comporte des dents engrenant à jeu avec une denture constituée sur une seconde desdites parties coaxiales (10) le contact entre les dents dudit disque de couplage (20) et la denture de ladite partie coaxiale (A) ayant lieu avant que les moyens d'engrenement à jeu constitués entre les deux parties coaxiales n'arrivent en fin de course. 4- Dispositif amortisseur de torsion selon la revendication 1, caractérisé en ce que ledit disque de couplage (40) est constitué par le voile secondaire d'un sous-ensemble de préamortissement et en ce que ledit voile est lié en rotation à ladite partie coaxiale, le contact entre le plot (22) dudit disque de couplage et l'une des butées d'amortissement (24) garnissant la fenêtre de ladite première partie ayant lieu avant que les moyens d'engrenement à jeu constitués entre les deux parties coaxiales n'arrivent en fin de course.3- torsional damping device according to claim 1, characterized in that said coupling disc (20) is attached to a first of said coaxial parts and comprises teeth meshing with play with a toothing formed on a second of said coaxial parts (10) the contact between the teeth of said coupling disc (20) and the teeth of said coaxial part (A) taking place before the backlash gear means formed between the two coaxial parts arrive at the end of their travel. 4- torsional damping device according to claim 1, characterized in that said coupling disc (40) is constituted by the secondary web of a pre-damping sub-assembly and in that said web is linked in rotation to said coaxial part , the contact between the stud (22) of said coupling disc and one of the damping stops (24) lining the window of said first part taking place before the clearance gear means formed between the two coaxial parts arrive at the end of race.
5- Dispositif amortisseur de torsion selon la revendication 1, caractérisé en ce que lesdites butées d'amortissement (24) sont en caoutchouc.5- torsional damping device according to claim 1, characterized in that said damping stops (24) are made of rubber.
6- Dispositif amortisseur de torsion selon la revendication 1, caractérisé en ce que lesdites butées d'amortissement (24) sont montées par clipsage et comportent à cet effet des rebords de clipsage (25) pour un maintien dans la fenêtre (23) de ladite première partie coaxiale.6- torsional damping device according to claim 1, characterized in that said damping stops (24) are mounted by clipping and for this purpose comprise clipping flanges (25) for holding in said window (23) of said first coaxial part.
7- Dispositif amortisseur de torsion selon la revendication 1, caractérisé en ce que ladite fenêtre (23) comporte un rétrécissement central.7- Torsion damping device according to claim 1, characterized in that said window (23) has a central narrowing.
8- Dispositif amortisseur de torsion selon la revendication 1, caractérisé en ce que des espaces sont ménagés entre les bords de ladite fenêtre et lesdites butées d'amortissement afin de leur permettre de se déformer.8- A torsion damping device according to claim 1, characterized in that spaces are provided between the edges of said window and said damping stops so as to allow them to deform.
9- Dispositif amortisseur de torsion selon la revendication 1, caractérisé en ce que chaque plot axial (22) ou lesdites butées d'amortissement (24) présentent des surfaces d'attaque conformes pour assurer une certaine progressivité d'engagement entre ledit plot et une telle butée.9- Torsion damping device according to claim 1, characterized in that each axial stud (22) or said damping stops (24) have conforming attack surfaces to ensure a certain progressive engagement between said stud and a such a stop.
10- Dispositif amortisseur de torsion selon la revendication 1, caractérisé en ce que ledit disque de couplage rotatif (20) fait partie d'un agencement de frottement sec.10- Torsion damping device according to claim 1, characterized in that said rotary coupling disc (20) is part of a dry friction arrangement.
11- Dispositif amortisseur de torsion selon la revendication 1, caractérisé en ce que ledit disque de couplage rotatif central (20) est en métal.11- Torsion damping device according to claim 1, characterized in that said central rotary coupling disc (20) is made of metal.
12- Dispositif amortisseur de torsion selon la revendication 1, caractérisé en ce que ledit disque de couplage rotatif est en matière synthétique. 12- Torsion damping device according to claim 1, characterized in that said rotary coupling disc is made of synthetic material.
PCT/FR1995/001270 1994-10-03 1995-09-29 Torsional damper device WO1996010704A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8511466A JPH09506420A (en) 1994-10-03 1995-09-29 Torsion damping device
DE19581291T DE19581291T1 (en) 1994-10-03 1995-09-29 Torsion damping device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9411779A FR2726341B1 (en) 1994-10-03 1994-10-03 TORSION DAMPING DEVICE
FR94/11779 1994-10-03

Publications (1)

Publication Number Publication Date
WO1996010704A1 true WO1996010704A1 (en) 1996-04-11

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PCT/FR1995/001270 WO1996010704A1 (en) 1994-10-03 1995-09-29 Torsional damper device

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JP (1) JPH09506420A (en)
DE (1) DE19581291T1 (en)
FR (1) FR2726341B1 (en)
WO (1) WO1996010704A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017081089A1 (en) * 2015-11-11 2017-05-18 Valeo Otomotiv Sanayi Ve Ticaret A.S. A vibration dampener for hybrid vehicles
CN111075886A (en) * 2018-10-19 2020-04-28 郑州宇通客车股份有限公司 Torsional damper and vehicle using same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6409605B1 (en) 1997-02-14 2002-06-25 Valeo Hub for preliminary shock absorber in particular for motor vehicle, and torque damping device comprising same
JP2018096448A (en) * 2016-12-13 2018-06-21 アイシン精機株式会社 Damper device

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FR2496210A1 (en) * 1980-12-16 1982-06-18 Valeo TORSION DAMPER DEVICE, IN PARTICULAR FOR A CLUTCH FRICTION DISC OF A MOTOR VEHICLE
FR2628807A1 (en) * 1988-03-17 1989-09-22 Valeo Torsion damper for motor vehicle clutch - has arrangement for preventing relative movement between hub and guides of auxiliary damper
US4924990A (en) * 1986-12-10 1990-05-15 Kabushiki Kaisha Daikin Seisakusho Damper disc
FR2642804A1 (en) * 1989-02-07 1990-08-10 Valeo Torsion damping device, particularly for a motor vehicle clutch friction disc
EP0488859A1 (en) * 1990-11-28 1992-06-03 Valeo Device for dumping torsions, for a disck cluch of a automobile vehicle
GB2254398A (en) * 1991-03-29 1992-10-07 Valeo A torsion damper including a pre-damper having a housing with hooked tongues.
EP0641956A1 (en) * 1993-09-07 1995-03-08 Unisia Jecs Corporation Torsional damper with friction generating device

Patent Citations (8)

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Publication number Priority date Publication date Assignee Title
FR2496210A1 (en) * 1980-12-16 1982-06-18 Valeo TORSION DAMPER DEVICE, IN PARTICULAR FOR A CLUTCH FRICTION DISC OF A MOTOR VEHICLE
GB2089472A (en) * 1980-12-16 1982-06-23 Valeo Torsion damping device for an automobile clutch friction disc
US4924990A (en) * 1986-12-10 1990-05-15 Kabushiki Kaisha Daikin Seisakusho Damper disc
FR2628807A1 (en) * 1988-03-17 1989-09-22 Valeo Torsion damper for motor vehicle clutch - has arrangement for preventing relative movement between hub and guides of auxiliary damper
FR2642804A1 (en) * 1989-02-07 1990-08-10 Valeo Torsion damping device, particularly for a motor vehicle clutch friction disc
EP0488859A1 (en) * 1990-11-28 1992-06-03 Valeo Device for dumping torsions, for a disck cluch of a automobile vehicle
GB2254398A (en) * 1991-03-29 1992-10-07 Valeo A torsion damper including a pre-damper having a housing with hooked tongues.
EP0641956A1 (en) * 1993-09-07 1995-03-08 Unisia Jecs Corporation Torsional damper with friction generating device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017081089A1 (en) * 2015-11-11 2017-05-18 Valeo Otomotiv Sanayi Ve Ticaret A.S. A vibration dampener for hybrid vehicles
CN111075886A (en) * 2018-10-19 2020-04-28 郑州宇通客车股份有限公司 Torsional damper and vehicle using same
CN111075886B (en) * 2018-10-19 2024-05-31 宇通客车股份有限公司 Torsional vibration damper and vehicle using same

Also Published As

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JPH09506420A (en) 1997-06-24
FR2726341A1 (en) 1996-05-03
FR2726341B1 (en) 1997-01-10
DE19581291T1 (en) 1997-01-02

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