WO2002057646A1 - Flexible clutch flywheel, in particular for motor vehicle - Google Patents

Flexible clutch flywheel, in particular for motor vehicle Download PDF

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Publication number
WO2002057646A1
WO2002057646A1 PCT/FR2002/000174 FR0200174W WO02057646A1 WO 2002057646 A1 WO2002057646 A1 WO 2002057646A1 FR 0200174 W FR0200174 W FR 0200174W WO 02057646 A1 WO02057646 A1 WO 02057646A1
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WO
WIPO (PCT)
Prior art keywords
flexible
annular
elastic washer
sheet
steering wheel
Prior art date
Application number
PCT/FR2002/000174
Other languages
French (fr)
Inventor
Ayman Mokdad
Roel Verhoog
Original Assignee
Valeo Embrayages
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 Embrayages filed Critical Valeo Embrayages
Priority to BR0203562-6A priority Critical patent/BR0203562A/en
Priority to JP2002557686A priority patent/JP2004517285A/en
Priority to DE10290272T priority patent/DE10290272T1/en
Publication of WO2002057646A1 publication Critical patent/WO2002057646A1/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
    • F16F15/131—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 the rotating system comprising two or more gyratory masses
    • F16F15/13142—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 the rotating system comprising two or more gyratory masses characterised by the method of assembly, production or treatment
    • F16F15/1315—Multi-part primary or secondary masses, e.g. assembled from pieces of sheet steel

Definitions

  • the invention relates to a flexible flywheel for a clutch, in particular for a motor vehicle.
  • EP-A-0 990 817 discloses a flexible flywheel in which an annular mass forming a flywheel is mounted by a flexible annular sheet at the end of a driving shaft such as the crankshaft of a combustion engine. internal.
  • An annular reinforcement is added to the internal radial part of the flexible annular sheet and holes formed in this part and in the annular reinforcement receive bolts for fixing the flexible flywheel to the driving shaft.
  • An elastic washer such as a Belleville washer for example, is interposed between a central part of the flexible sheet and the radially internal part of the annular mass, to absorb the bending vibrations transmitted by the driving shaft and to absorb them by friction on the flexible sheet and on the annular mass.
  • this elastic washer is generally formed by cutting and has relatively large dimensional tolerances, which can reach a millimeter in radius. It is therefore likely to move radially by about one millimeter in the countersinking of the flexible sheet or of the annular mass after balancing the assembly, this displacement creating an imbalance two times higher than that authorized and not being acceptable.
  • the peripheries of the elastic washers formed by cutting have sharp edges, the friction of which on the flexible sheet and / or on the annular mass can cause significant wear. Machining the elastic washers would reduce their dimensional tolerances and remove their sharp edges, but would be too expensive.
  • the present invention aims in particular to provide a simple, effective and economical solution to these problems.
  • It relates to a flexible flywheel of the aforementioned type, equipped with an elastic washer for absorbing and damping bending vibrations, which is precisely and permanently centered to avoid imbalance problems after balancing the flywheel and which does not cause abnormal wear over time.
  • a flexible clutch flywheel in particular for a motor vehicle, comprising an annular mass fixed to a radially external part of a flexible annular sheet, a radially internal part of which has orifices for the passage of fastening means on a shaft leading, an annular piece of reinforcement which is attached to the radially internal part of the flexible sheet and which has through orifices fixing means on the driving shaft, at least one elastic washer interposed between the annular mass and a middle part of the flexible annular sheet, and means for centering the elastic washer, characterized in that the centering means comprise tabs formed on the elastic washer and cooperating with the annular reinforcement piece.
  • the elastic washer is therefore centered by the abovementioned tabs on the annular reinforcement piece which is itself centered and fixed with the flexible sheet at the end of the crankshaft. This eliminates any risk of imbalance due to the spring washer.
  • the centering tabs of the elastic washer are also used for fixing it on the annular reinforcement piece, before mounting and fixing the flexible flywheel on the crankshaft, and the annular reinforcement piece is thus maintained and centered with respect to the flexible sheet and the annular mass in a unitary assembly formed by the flexible sheet and the annular mass fixed to one another and by the elastic washer and the annular reinforcement piece which are arranged between the flexible sheet and the annular mass. This facilitates and simplifies the assembly of the flexible flywheel and its attachment to the crankshaft.
  • the centering tabs are formed at the internal periphery of the elastic washer and are radial or curved or folded parallel to the axis of rotation and ensure the centering of the elastic washer by cooperation of shapes with the annular reinforcement piece.
  • the elastic washer is axially supported on rounded protruding parts of the annular mass and / or of the flexible annular sheet and its external and internal peripheral edges are spaced from the flexible annular sheet and of the annular mass.
  • the elastic washer used for absorbing and damping bending vibrations can be produced by cutting, since its external and internal peripheral edges having sharp edges are spaced from the flexible annular sheet and of the annular mass and cannot therefore rub on these two parts and wear them out.
  • the elastic washer is a Belleville washer and its centering tabs are curved or folded parallel to the axis and engaged in notches in the annular reinforcement piece.
  • centering means fulfill their role permanently and prevent any radial displacement of the washer when using the flexible flywheel.
  • the balancing which is carried out after assembly of the flexible flywheel is therefore permanent.
  • the annular reinforcing part also comprises angular and radial setting means on the flexible annular sheet, which also facilitates the assembly and the fixing of the flexible flywheel.
  • FIG. 1 is a schematic view in axial section of three components of a steering wheel flexible according to the invention, shown spaced from each other;
  • FIG. 2 is a view similar to Figure 1, but shows the elastic washer mounted on the annular reinforcement piece;
  • FIG. 2A is a front view of the elastic washer mounted on the annular reinforcement piece;
  • Figure 3 is a view corresponding to Figures 1 and 2, but shows the three assembled elements;
  • - Figure 4 is an axial sectional view of a flexible flywheel according to the invention before its attachment to the end of a driving shaft;
  • - Figure 5 is a schematic exploded perspective view of the flexible annular sheet, the reinforcement piece and the elastic washer;
  • FIG. 6 to 8 are partial schematic views illustrating different alternative embodiments of the invention.
  • the reference 10 designates a flexible annular sheet, a radially internal part 12 of which has holes 14 for passage of the screws for fixing the flexible flywheel according to the invention at the end of a shaft leading such as the crankshaft of an internal combustion engine.
  • the radially external part 16 of this flexible annular sheet has holes 18 for passage of the means 20 for fixing an annular mass 22 which forms a flywheel and a reaction plate of a clutch (not shown) for transmitting the engine torque provided by the shaft leading to a driven shaft, such as for example the input shaft of a gearbox.
  • Additional orifices formed in the radially external part 16 of the flexible sheet 10 are intended to receive pins 24 of angular positioning on the annular mass 22
  • the radially internal part 12 of the annular sheet metal 10 which comprises the holes 14 for the passage of the fixing bolts for the flexible flywheel on the driving shaft, has a relatively small thickness, which may not be sufficient to withstand the transmission forces of the torque and bending vibrations. It is therefore preferably associated with an annular reinforcing piece 26, the thickness of which is greater than that of the flexible sheet 10 and which has holes 28 aligned with the holes 14 of the sheet 10 for the passage of the aforementioned fixing screws. .
  • the radially internal part 12 of the sheet 10 is pressed against the end of the driving shaft by the annular part 26 so that the forces resulting from the transmission of the motor torque and bending vibrations are supported by the whole of the radially internal part 12 of the flexible sheet and are no longer concentrated on the edges of the holes 14.
  • the annular part 26 On its face facing the flexible sheet 10, the annular part 26 comprises a projecting stud 30, received in a hole 32 in the sheet 10 and making it possible to angularly and radially position the piece 26 on the sheet 10.
  • This stud 30 is, for example, formed in a simple way by the stamping press.
  • the annular part 26 and the sheet 10 can be positioned and connected by an elastic pin or a pin mounted tightly, received in corresponding holes of the part 26 and of the sheet 10.
  • the outer periphery of the annular part 26 has notches or notches 34 of rectangular or square shape, six in number in the example shown, which are distributed regularly over the periphery of the annular part 26 and which are intended to receive tabs 36 formed at the inner periphery of an elastic washer 38 such as a Belleville washer for example.
  • the legs 36 are substantially T-shaped and are formed by cutting with the washer 38. They extend radially inward and are then folded so that their ends are substantially parallel to the axis of rotation.
  • the tabs 36 extend in the direction opposite to the flexible sheet 10, in the same direction as the frustoconical part of the washer 38 from its small base.
  • the inside diameter of the washer 38 is slightly greater than the outside diameter of the reinforcing piece 26 and, in the free state, the diameter of the circle delimited by the ends 40 of the legs 36 is substantially equal to or slightly greater than the diameter passing through the bottom 42 of the notches 34 of the part 26.
  • the washer 38 can then be mounted by axial translation on the reinforcement part 26, its legs 36 being engaged in the notches 34 and their ends 40 abutting on the edges of these notches to form an axial retention of the washer 38 on the part 26.
  • the bent parts of the lugs 36 can come into resilient abutment on the bottom 42 of the notches 34, which positions and fixes the washer 38 on the part 26.
  • the legs 36 can be spaced radially from the bottoms 42 of the notches 34. In all cases, the legs 36 have a width which corresponds substantially to that of the notches 34 and the engagement of the legs 36 in the notches 34 ensures radial positioning and precise and permanent circumferential of the washer 38 on the part 26.
  • the legs 36 are radial and their lateral edges or their sides ensure the radial and circumferential centering of the washer 38 on the part 26.
  • the middle part of the flexible annular sheet 10 comprises an annular bead 44 projecting towards the washer elastic 38, this bead 44 having a diameter slightly greater than the internal diameter of the washer 38.
  • the annular mass 22 similarly comprises an annular bead 46 projecting from its face facing the elastic washer 38, this bead 46 having a diameter slightly less than the external diameter of the washer 38.
  • the elastic washer 38 is in axial support on the annular beads 44 and 46 in the vicinity of its inner periphery and its outer periphery respectively.
  • the peripheral edges of the washer 38 which are likely to have sharp edges, are spaced from the flexible sheet 10 and from the annular mass 22 and cannot come into contact with them when the elastic washer 38 is more or less flattened by the bending vibrations transmitted by the shaft leading to the flexible annular sheet 10.
  • the boss 44 is formed by stamping on the sheet 10 and the boss 46 is machined on the annular mass 22.
  • the centering tabs can be formed on the external periphery of the reinforcement piece 26, and the notches receiving these tabs are formed in the internal periphery of the elastic washer 38.
  • the flexural vibrations of the annular sheet 10 are damped by radial friction of the elastic washer 38 on the sheet 10 and on the annular mass 22, as well as by axial friction of the folded ends of the legs 36 of the washer 38 in the notches 34 of the reinforcement piece 26, when the tabs 36 are in elastic support on the bottom of the notches 34.
  • the folded tabs 36 of the washer 38 may be in elastic abutment on the cylindrical periphery of the reinforcement piece 26 which is then devoid of the notches 34.
  • the flexural vibrations are damped by radial friction of the washer 38 on the sheet metal 10 and the annular mass 22 and by axial friction of the lugs 36 on the periphery of the part 26.
  • the elastic washer 38 is of the type shown in Figures 1 to 5, but its legs 36 have a greater radial extent and bear on the flexible sheet 10 at points distant from the Belleville washer itself, which allows a lever effect and a reduction in the force applied to this washer.
  • FIG. 7 corresponds substantially to that of FIG. 6, but the elastic washer 38 is inclined in the opposite direction, that is to say that the cone formed by the washer widens in the direction of the flexible sheet 10.
  • the flexural vibrations are damped by radial friction of the washer 38 on a boss 44 of the flexible sheet 10 and on an end edge of the annular mass 22 and by axial friction of the tabs 36 on the annular reinforcing part 26. This axial friction occurs over a relatively large distance due to the reduction in ratio provided by the lever arm between the different bearing zones of the washer 38.
  • the elastic washer 38 is a Belleville washer with a small apex angle, mounted radially between the internal periphery of the annular mass 22 and the external periphery of the reinforcement piece 26 and coming to bear radially on bosses of these peripheries.
  • a radial flange 50 of the reinforcement piece 26 prevents the washer 38 from escaping.
  • the tabs 36 of the washer resting on the boss of the piece of reinforcement 26 provide centering of the washer and greater elasticity.
  • lugs can be formed at the other end of the washer and are supported on the boss of the annular mass 22.
  • the flexural vibrations are damped by axial friction of the washer 38 on the bosses of the annular mass 22 and of the reinforcement piece 26.

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

Abstract

The invention concerns a flexible clutch flywheel, in particular for motor vehicle, comprising an annular mass member (22) fixed on a flexible plate (10) whereof the internal periphery comprises orifices (14) for passing through fixing means on an input shaft, and an elastic washer (38) interposed between the flexible plate (10) and the annular mass member (22) and urged to be pressed on rounded bosses (44, 46) of the flexible plate (10) and of the annular mass member (22), the elastic washer (38) also including lugs (36) for being centred on an annular component (26) reinforcing the radially inner part of the flexible plate (10).

Description

Volant flexible pour embrayage, en particulier pour véhicule automobile Flexible clutch flywheel, in particular for a motor vehicle
L'invention concerne un volant flexible pour embrayage, en particulier pour véhicule automobile.The invention relates to a flexible flywheel for a clutch, in particular for a motor vehicle.
On connaît, par EP-A-0 990 817, un volant flexible dans lequel une masse annulaire formant un volant d'inertie est montée par une tôle annulaire flexible en bout d'un arbre menant tel que le vilebrequin d'un moteur à combustion interne. Un renfort annulaire est rapporté sur la partie radiale ent interne de la tôle annulaire flexible et des trous formés dans cette partie et dans le renfort annulaire reçoivent des boulons de fixation du volant flexible sur l'arbre menant. Une rondelle élastique, telle qu'une rondelle Belleville par exemple, est interposée entre une partie centrale de la tôle flexible et la partie radialement interne de la masse annulaire, pour absorber les vibrations en flexion transmises par l'arbre menant et pour les amortir par frottement sur la tôle flexible et sur la masse annulaire .EP-A-0 990 817 discloses a flexible flywheel in which an annular mass forming a flywheel is mounted by a flexible annular sheet at the end of a driving shaft such as the crankshaft of a combustion engine. internal. An annular reinforcement is added to the internal radial part of the flexible annular sheet and holes formed in this part and in the annular reinforcement receive bolts for fixing the flexible flywheel to the driving shaft. An elastic washer, such as a Belleville washer for example, is interposed between a central part of the flexible sheet and the radially internal part of the annular mass, to absorb the bending vibrations transmitted by the driving shaft and to absorb them by friction on the flexible sheet and on the annular mass.
On a déjà proposé de centrer cette rondelle élastique dans un lamage de la tôle flexible ou de la masse annulaire et dont le bord forme une butée radiale de la périphérie interne ou externe selon les cas de la rondelle élastique.It has already been proposed to center this elastic washer in a countersink of the flexible sheet or of the annular mass and the edge of which forms a radial stop of the internal or external periphery depending on the case of the elastic washer.
Toutefois, cette rondelle élastique est en général formée par découpe et a des tolérances dimensionnelles relativement importantes, qui peuvent atteindre un millimètre au rayon. Elle est donc susceptible de se déplacer radialement d'un millimètre environ dans le lamage de la tôle flexible ou de la masse annulaire après équilibrage de l'ensemble, ce déplacement créant un balourd deux fois supérieur à celui autorisé et n'étant pas acceptable.However, this elastic washer is generally formed by cutting and has relatively large dimensional tolerances, which can reach a millimeter in radius. It is therefore likely to move radially by about one millimeter in the countersinking of the flexible sheet or of the annular mass after balancing the assembly, this displacement creating an imbalance two times higher than that authorized and not being acceptable.
De plus, les périphéries des rondelles élastiques formées par découpe ont des arêtes vives dont le frottement sur la tôle flexible et/ou sur la masse annulaire peut provoquer une usure importante . Un usinage des rondelles élastiques permettrait de réduire leurs tolérances dimensionnelles et de supprimer leurs arêtes vives, mais serait trop co teux.In addition, the peripheries of the elastic washers formed by cutting have sharp edges, the friction of which on the flexible sheet and / or on the annular mass can cause significant wear. Machining the elastic washers would reduce their dimensional tolerances and remove their sharp edges, but would be too expensive.
La présente invention a notamment pour but d'apporter une solution simple, efficace et économique à ces problèmes.The present invention aims in particular to provide a simple, effective and economical solution to these problems.
Elle a pour objet un volant flexible du type précité, équipé d'une rondelle élastique pour l'absorption et l'amortissement des vibrations en flexion, qui est centrée de façon précise et permanente pour éviter les problèmes de balourd après équilibrage du volant et qui ne provoque pas d'usure anormale au cours du temps .It relates to a flexible flywheel of the aforementioned type, equipped with an elastic washer for absorbing and damping bending vibrations, which is precisely and permanently centered to avoid imbalance problems after balancing the flywheel and which does not cause abnormal wear over time.
Elle a également pour objet un volant flexible de ce type, dont l'assemblage est simplifié et facilité.It also relates to a flexible steering wheel of this type, the assembly of which is simplified and facilitated.
Elle propose à cet effet un volant flexible pour embrayage, en particulier pour véhicule automobile, comprenant une masse annulaire fixée sur une partie radialement externe d'une tôle annulaire flexible dont une partie radialement interne comporte des orifices de passage de moyens de fixation sur un arbre menant, une pièce annulaire de renfort qui est rapportée sur la partie radialement interne de la tôle flexible et qui comporte des orifices de passage des moyens de fixation sur l'arbre menant, au moins une rondelle élastique interposée entre la masse annulaire et une partie médiane de la tôle annulaire flexible, et des moyens de centrage de la rondelle élastique, caractérisé en ce que les moyens de centrage comprennent des pattes formées sur la rondelle élastique et coopérant avec la pièce annulaire de renfort.To this end, it provides a flexible clutch flywheel, in particular for a motor vehicle, comprising an annular mass fixed to a radially external part of a flexible annular sheet, a radially internal part of which has orifices for the passage of fastening means on a shaft leading, an annular piece of reinforcement which is attached to the radially internal part of the flexible sheet and which has through orifices fixing means on the driving shaft, at least one elastic washer interposed between the annular mass and a middle part of the flexible annular sheet, and means for centering the elastic washer, characterized in that the centering means comprise tabs formed on the elastic washer and cooperating with the annular reinforcement piece.
Selon l'invention, la rondelle élastique est donc centrée par les pattes précitées sur la pièce annulaire de renfort qui est elle-même centrée et fixée avec la tôle flexible en bout du vilebrequin. Cela supprime tout risque de balourd dû à la rondelle élastique. Les pattes de centrage de la rondelle élastique servent aussi à sa fixation sur la pièce annulaire de renfort, avant montage et fixation du volant flexible sur le vilebrequin, et la pièce annulaire de renfort est ainsi maintenue et centrée par rapport à la tôle flexible et à la masse annulaire dans un ensemble unitaire formé par la tôle flexible et la masse annulaire fixées l'une à l'autre et par la rondelle élastique et la pièce annulaire de renfort qui sont disposées entre la tôle flexible et la masse annulaire. Cela facilite et simplifie l'assemblage du volant flexible et sa fixation sur le vilebrequin.According to the invention, the elastic washer is therefore centered by the abovementioned tabs on the annular reinforcement piece which is itself centered and fixed with the flexible sheet at the end of the crankshaft. This eliminates any risk of imbalance due to the spring washer. The centering tabs of the elastic washer are also used for fixing it on the annular reinforcement piece, before mounting and fixing the flexible flywheel on the crankshaft, and the annular reinforcement piece is thus maintained and centered with respect to the flexible sheet and the annular mass in a unitary assembly formed by the flexible sheet and the annular mass fixed to one another and by the elastic washer and the annular reinforcement piece which are arranged between the flexible sheet and the annular mass. This facilitates and simplifies the assembly of the flexible flywheel and its attachment to the crankshaft.
Selon une autre caractéristique de l'invention, les pattes de centrage sont formées à la périphérie interne de la rondelle élastique et sont radiales ou incurvées ou pliées parallèlement à l'axe de rotation et assurent le centrage de la rondelle élastique par coopération de formes avec la pièce annulaire de renfort. Cette réalisation est simple et économique.According to another characteristic of the invention, the centering tabs are formed at the internal periphery of the elastic washer and are radial or curved or folded parallel to the axis of rotation and ensure the centering of the elastic washer by cooperation of shapes with the annular reinforcement piece. This realization is simple and economical.
Selon une autre caractéristique de l'invention, la rondelle élastique est en appui axial sur des parties arrondies en saillie de la masse annulaire et/ou de la tôle annulaire flexible et ses bords périphériques externe et interne sont écartés de la tôle annulaire flexible et de la masse annulaire. Dans le volant flexible selon l'invention, la rondelle élastique utilisée pour l'absorption et l'amortissement des vibrations en flexion peut être réalisée par découpe, puisque ses bords périphériques externe et interne présentant des arêtes vives sont écartés de la tôle annulaire flexible et de la masse annulaire et ne peuvent donc frotter sur ces deux pièces et les user.According to another characteristic of the invention, the elastic washer is axially supported on rounded protruding parts of the annular mass and / or of the flexible annular sheet and its external and internal peripheral edges are spaced from the flexible annular sheet and of the annular mass. In the flexible flywheel according to the invention, the elastic washer used for absorbing and damping bending vibrations can be produced by cutting, since its external and internal peripheral edges having sharp edges are spaced from the flexible annular sheet and of the annular mass and cannot therefore rub on these two parts and wear them out.
Dans un mode de réalisation préféré de l'invention, la rondelle élastique est une rondelle Belleville et ses pattes de centrage sont incurvées ou pliées parallèlement à l'axe et engagées dans des échancrures de la pièce annulaire de renfort.In a preferred embodiment of the invention, the elastic washer is a Belleville washer and its centering tabs are curved or folded parallel to the axis and engaged in notches in the annular reinforcement piece.
Ces moyens de centrage remplissent leur rôle en permanence et empêchent tout déplacement radial de la rondelle lors de l'utilisation du volant flexible. L'équilibrage qui est réalisé après assemblage du volant flexible est donc permanent.These centering means fulfill their role permanently and prevent any radial displacement of the washer when using the flexible flywheel. The balancing which is carried out after assembly of the flexible flywheel is therefore permanent.
Selon une autre caractéristique de l'invention, la pièce annulaire de renfort comporte également des moyens de calage angulaire et radial sur la tôle annulaire flexible, ce qui facilite aussi l'assemblage et la fixation du volant flexible.According to another characteristic of the invention, the annular reinforcing part also comprises angular and radial setting means on the flexible annular sheet, which also facilitates the assembly and the fixing of the flexible flywheel.
L'invention sera mieux comprise et d'autres caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement à la lecture de la description qui suit, faite à titre d'exemple en référence aux dessins annexés dans lesquels :The invention will be better understood and other characteristics, details and advantages thereof will appear more clearly on reading the description which follows, given by way of example with reference to the appended drawings in which:
- la figure 1 est une vue schématique en coupe axiale de trois éléments constitutifs d'un volant flexible selon l'invention, représentés espacés les uns des autres ;- Figure 1 is a schematic view in axial section of three components of a steering wheel flexible according to the invention, shown spaced from each other;
- la figure 2 est une vue semblable à la figure 1, mais représente la rondelle élastique montée sur la pièce annulaire de renfort ; la figure 2A est une vue de face de la rondelle élastique montée sur la pièce annulaire de renfort ; la figure 3 est une vue correspondant aux figures 1 et 2, mais représente les trois éléments assemblés ;- Figure 2 is a view similar to Figure 1, but shows the elastic washer mounted on the annular reinforcement piece; FIG. 2A is a front view of the elastic washer mounted on the annular reinforcement piece; Figure 3 is a view corresponding to Figures 1 and 2, but shows the three assembled elements;
- la figure 4 est une vue en coupe axiale d'un volant flexible selon l'invention avant sa fixation en bout d'un arbre menant ; - la figure 5 est une vue schématique en perspective éclatée de la tôle annulaire flexible, de la pièce de renfort et de la rondelle élastique ;- Figure 4 is an axial sectional view of a flexible flywheel according to the invention before its attachment to the end of a driving shaft; - Figure 5 is a schematic exploded perspective view of the flexible annular sheet, the reinforcement piece and the elastic washer;
- les figures 6 à 8 sont des vues schématiques partielles illustrant différentes variantes de réalisation de l'invention.- Figures 6 to 8 are partial schematic views illustrating different alternative embodiments of the invention.
Dans le premier mode de réalisation représenté aux figures 1 à 5, la référence 10 désigne une tôle annulaire flexible dont une partie radialement interne 12 comporte des trous 14 de passage des vis de fixation du volant flexible selon 1 ' invention en bout d'un arbre menant tel que le vilebrequin d'un moteur à combustion interne .In the first embodiment shown in FIGS. 1 to 5, the reference 10 designates a flexible annular sheet, a radially internal part 12 of which has holes 14 for passage of the screws for fixing the flexible flywheel according to the invention at the end of a shaft leading such as the crankshaft of an internal combustion engine.
La partie radialement externe 16 de cette tôle annulaire flexible comporte des trous 18 de passage des moyens 20 de fixation d'une masse annulaire 22 qui forme un volant d'inertie et un plateau de réaction d'un embrayage (non représenté) permettant de transmettre le couple moteur fourni par 1 ' arbre menant à un arbre mené, tel que par exemple l'arbre d'entrée d'une boîte de vitesses.The radially external part 16 of this flexible annular sheet has holes 18 for passage of the means 20 for fixing an annular mass 22 which forms a flywheel and a reaction plate of a clutch (not shown) for transmitting the engine torque provided by the shaft leading to a driven shaft, such as for example the input shaft of a gearbox.
Des orifices supplémentaires formés dans la partie radialement externe 16 de la tôle flexible 10 sont destinés à recevoir des goupilles 24 de positionnement angulaire sur la masse annulaire 22Additional orifices formed in the radially external part 16 of the flexible sheet 10 are intended to receive pins 24 of angular positioning on the annular mass 22
(figure 4) .(figure 4).
La partie radialement interne 12 de la tôle annulaire 10 qui comprend les trous 14 de passage des boulons de fixation du volant flexible sur 1 ' arbre menant, a une épaisseur relativement faible, qui risque de ne pas être suffisante pour supporter les efforts de transmission du couple et les vibrations en flexion. Elle est donc de préférence associée à une pièce annulaire de renfort 26, dont l'épaisseur est supérieure à celle de la tôle flexible 10 et qui comporte des trous 28 alignés avec les trous 14 de la tôle 10 pour le passage des vis de fixation précitées. Ainsi, quand le volant flexible est fixé en bout de l'arbre menant, la partie radialement interne 12 de la tôle 10 est plaquée sur l'extrémité de l'arbre menant par la pièce annulaire 26 de sorte que les efforts résultant de la transmission du couple moteur et des vibrations en flexion sont supportés par l'ensemble de la partie radialement interne 12 de la tôle flexible et ne sont plus concentrés sur les bords des trous 14.The radially internal part 12 of the annular sheet metal 10 which comprises the holes 14 for the passage of the fixing bolts for the flexible flywheel on the driving shaft, has a relatively small thickness, which may not be sufficient to withstand the transmission forces of the torque and bending vibrations. It is therefore preferably associated with an annular reinforcing piece 26, the thickness of which is greater than that of the flexible sheet 10 and which has holes 28 aligned with the holes 14 of the sheet 10 for the passage of the aforementioned fixing screws. . Thus, when the flexible flywheel is fixed at the end of the driving shaft, the radially internal part 12 of the sheet 10 is pressed against the end of the driving shaft by the annular part 26 so that the forces resulting from the transmission of the motor torque and bending vibrations are supported by the whole of the radially internal part 12 of the flexible sheet and are no longer concentrated on the edges of the holes 14.
Sur sa face tournée vers la tôle flexible 10, la pièce annulaire 26 comporte un téton 30 en saillie, reçu dans un trou 32 de la tôle 10 et permettant de positionner angulairement et radialement la pièce 26 sur la tôle 10.On its face facing the flexible sheet 10, the annular part 26 comprises a projecting stud 30, received in a hole 32 in the sheet 10 and making it possible to angularly and radially position the piece 26 on the sheet 10.
Ce téton 30 est, par exemple, formé de façon simple à la presse par estampage. En variante, la pièce annulaire 26 et la tôle 10 peuvent être positionnées et reliées par une goupille élastique ou une goupille montée serrée, reçue dans des trous correspondants de la pièce 26 et de la tôle 10.This stud 30 is, for example, formed in a simple way by the stamping press. As a variant, the annular part 26 and the sheet 10 can be positioned and connected by an elastic pin or a pin mounted tightly, received in corresponding holes of the part 26 and of the sheet 10.
Ces moyens de positionnement permettent aussi de former un sous-ensemble à partir de la tôle 10 et de la pièce annulaire 26.These positioning means also make it possible to form a sub-assembly from the sheet metal 10 and the annular part 26.
La périphérie externe de la pièce annulaire 26 comporte des échancrures ou encoches 34 de forme rectangulaire ou carrée, au nombre de six dans l'exemple représenté, qui sont réparties régulièrement sur la périphérie de la pièce annulaire 26 et qui sont destinées à recevoir des pattes 36 formées à la périphérie interne d'une rondelle élastique 38 telle qu'une rondelle Belleville par exemple. Les pattes 36 sont sensiblement en forme de T et sont formées par découpe avec la rondelle 38. Elles s'étendent radialement vers l'intérieur puis sont pliées pour que leurs extrémités soient sensiblement parallèles à l'axe de rotation. Comme on le voit bien sur les dessins, les pattes 36 s ' étendent dans la direction opposée à la tôle flexible 10, dans le même sens que la partie tronconique de la rondelle 38 depuis sa petite base.The outer periphery of the annular part 26 has notches or notches 34 of rectangular or square shape, six in number in the example shown, which are distributed regularly over the periphery of the annular part 26 and which are intended to receive tabs 36 formed at the inner periphery of an elastic washer 38 such as a Belleville washer for example. The legs 36 are substantially T-shaped and are formed by cutting with the washer 38. They extend radially inward and are then folded so that their ends are substantially parallel to the axis of rotation. As can be seen in the drawings, the tabs 36 extend in the direction opposite to the flexible sheet 10, in the same direction as the frustoconical part of the washer 38 from its small base.
Le diamètre intérieur de la rondelle 38 est légèrement supérieur au diamètre extérieur de la pièce de renfort 26 et, à l'état libre, le diamètre du cercle délimité par les extrémités 40 des pattes 36 est sensiblement égal ou légèrement supérieur au diamètre passant par le fond 42 des échancrures 34 de la pièce 26. La rondelle 38 peut alors être montée par translation axiale sur la pièce de renfort 26, ses pattes 36 étant engagées dans les échancrures 34 et leurs extrémités 40 venant en butée sur les bords de ces échancrures pour former une retenue axiale de la rondelle 38 sur la pièce 26.The inside diameter of the washer 38 is slightly greater than the outside diameter of the reinforcing piece 26 and, in the free state, the diameter of the circle delimited by the ends 40 of the legs 36 is substantially equal to or slightly greater than the diameter passing through the bottom 42 of the notches 34 of the part 26. The washer 38 can then be mounted by axial translation on the reinforcement part 26, its legs 36 being engaged in the notches 34 and their ends 40 abutting on the edges of these notches to form an axial retention of the washer 38 on the part 26.
Comme représenté schématiquement aux figures 2 et 3, les parties coudées des pattes 36 peuvent venir en appui élastique sur le fond 42 des échancrures 34, ce qui positionne et fixe la rondelle 38 sur la pièce 26. En variante, et comme représenté schématiquement en figure 4, les pattes 36 peuvent être écartées radialement des fonds 42 des échancrures 34. Dans tous les cas, les pattes 36 ont une largeur qui correspond sensiblement à celle des échancrures 34 et l'engagement des pattes 36 dans les échancrures 34 assure un positionnement radial et circonférentiel précis et permanent de la rondelle 38 sur la pièce 26.As shown diagrammatically in FIGS. 2 and 3, the bent parts of the lugs 36 can come into resilient abutment on the bottom 42 of the notches 34, which positions and fixes the washer 38 on the part 26. As a variant, and as shown diagrammatically in FIG. 4, the legs 36 can be spaced radially from the bottoms 42 of the notches 34. In all cases, the legs 36 have a width which corresponds substantially to that of the notches 34 and the engagement of the legs 36 in the notches 34 ensures radial positioning and precise and permanent circumferential of the washer 38 on the part 26.
Dans une variante, les pattes 36 sont radiales et leurs bords latéraux ou leurs flancs assurent le centrage radial et circonférentiel de la rondelle 38 sur la pièce 26. La partie médiane de la tôle annulaire flexible 10 comporte un bourrelet annulaire 44 en saillie vers la rondelle élastique 38, ce bourrelet 44 ayant un diamètre légèrement supérieur au diamètre interne de la rondelle 38. La masse annulaire 22 comporte, de façon similaire, un bourrelet annulaire 46 en saillie sur sa face tournée vers la rondelle élastique 38, ce bourrelet 46 ayant un diamètre légèrement inférieur au diamètre externe de la rondelle 38. Dans ces conditions, lorsque le volant flexible est assemblé par montage de la tôle annulaire flexible 10 au moyen des organes de fixation 20 et des goupilles cylindriques 24 sur la masse annulaire 22, la rondelle élastique 38 est en appui axial sur les bourrelets annulaires 44 et 46 au voisinage de sa périphérie interne et de sa périphérie externe respectivement . Les bords périphériques de la rondelle 38, qui sont susceptibles de comporter des arêtes vives, sont écartés de la tôle flexible 10 et de la masse annulaire 22 et ne peuvent venir en contact avec elles lorsque la rondelle élastique 38 est plus ou moins aplatie par les vibrations en flexion transmises par l'arbre menant à la tôle annulaire flexible 10. Le volant flexible représenté en figure 4 constitue un sous-ensemble pré-assemblé qui peut facilement être monté en bout de l'arbre menant, par introduction de vis dans les trous 14 et 28 et vissage de ces vis. Dans ce mode de réalisation, le bossage 44 est formé par emboutissage sur la tôle 10 et le bossage 46 est usiné sur la masse annulaire 22.In a variant, the legs 36 are radial and their lateral edges or their sides ensure the radial and circumferential centering of the washer 38 on the part 26. The middle part of the flexible annular sheet 10 comprises an annular bead 44 projecting towards the washer elastic 38, this bead 44 having a diameter slightly greater than the internal diameter of the washer 38. The annular mass 22 similarly comprises an annular bead 46 projecting from its face facing the elastic washer 38, this bead 46 having a diameter slightly less than the external diameter of the washer 38. Under these conditions, when the flexible flywheel is assembled by mounting the flexible annular sheet 10 by means of the fixing members 20 and the cylindrical pins 24 on the annular mass 22, the elastic washer 38 is in axial support on the annular beads 44 and 46 in the vicinity of its inner periphery and its outer periphery respectively. The peripheral edges of the washer 38, which are likely to have sharp edges, are spaced from the flexible sheet 10 and from the annular mass 22 and cannot come into contact with them when the elastic washer 38 is more or less flattened by the bending vibrations transmitted by the shaft leading to the flexible annular sheet 10. The flexible flywheel shown in FIG. 4 constitutes a pre-assembled sub-assembly which can easily be mounted at the end of the driving shaft, by introducing screws into the holes 14 and 28 and screwing of these screws. In this embodiment, the boss 44 is formed by stamping on the sheet 10 and the boss 46 is machined on the annular mass 22.
Dans une variante de réalisation non représentée, les pattes de centrage peuvent être formées sur la périphérie externe de la pièce de renfort 26, et les échancrures recevant ces pattes sont formées dans la périphérie interne de la rondelle élastique 38.In an alternative embodiment not shown, the centering tabs can be formed on the external periphery of the reinforcement piece 26, and the notches receiving these tabs are formed in the internal periphery of the elastic washer 38.
En fonctionnement, les vibrations en flexion de la tôle annulaire 10 sont amorties par frottement radial de la rondelle élastique 38 sur la tôle 10 et sur la masse annulaire 22, ainsi que par frottement axial des extrémités pliées des pattes 36 de la rondelle 38 dans les échancrures 34 de la pièce de renfort 26, lorsque les pattes 36 sont en appui élastique sur le fond des échancrures 34.In operation, the flexural vibrations of the annular sheet 10 are damped by radial friction of the elastic washer 38 on the sheet 10 and on the annular mass 22, as well as by axial friction of the folded ends of the legs 36 of the washer 38 in the notches 34 of the reinforcement piece 26, when the tabs 36 are in elastic support on the bottom of the notches 34.
En variante, les pattes repliées 36 de la rondelle 38 peuvent être en appui élastique sur la périphérie cylindrique de la pièce de renfort 26 qui est alors dépourvue des échancrures 34. En fonctionnement, les vibrations en flexion sont amorties par frottement radial de la rondelle 38 sur la tôle 10 et la masse annulaire 22 et par frottement axial des pattes 36 sur la périphérie de la pièce 26. En figure 6, la rondelle élastique 38 est du type représenté aux figures 1 à 5, mais ses pattes 36 ont une étendue radiale supérieure et prennent appui sur la tôle flexible 10 en des points éloignés de la rondelle Belleville proprement dite, ce qui permet un effet de bras de levier et une démultiplication de l'effort appliqué sur cette rondelle.As a variant, the folded tabs 36 of the washer 38 may be in elastic abutment on the cylindrical periphery of the reinforcement piece 26 which is then devoid of the notches 34. operation, the flexural vibrations are damped by radial friction of the washer 38 on the sheet metal 10 and the annular mass 22 and by axial friction of the lugs 36 on the periphery of the part 26. In FIG. 6, the elastic washer 38 is of the type shown in Figures 1 to 5, but its legs 36 have a greater radial extent and bear on the flexible sheet 10 at points distant from the Belleville washer itself, which allows a lever effect and a reduction in the force applied to this washer.
La variante de réalisation de la figure 7 correspond sensiblement à celle de la figure 6, mais la rondelle élastique 38 est inclinée dans le sens opposé, c'est-à-dire que le cône formé par la rondelle va en s ' élargissant dans la direction de la tôle flexible 10. En fonctionnement, les vibrations en flexion sont amorties par frottement radial de la rondelle 38 sur un bossage 44 de la tôle flexible 10 et sur un bord d'extrémité de la masse annulaire 22 et par frottement axial des pattes 36 sur la pièce annulaire de renfort 26. Ce frottement axial se produit sur une distance relativement importante en raison de la démultiplication assurée par le bras de levier entre les différentes zones d'appui de la rondelle 38.The variant embodiment of FIG. 7 corresponds substantially to that of FIG. 6, but the elastic washer 38 is inclined in the opposite direction, that is to say that the cone formed by the washer widens in the direction of the flexible sheet 10. In operation, the flexural vibrations are damped by radial friction of the washer 38 on a boss 44 of the flexible sheet 10 and on an end edge of the annular mass 22 and by axial friction of the tabs 36 on the annular reinforcing part 26. This axial friction occurs over a relatively large distance due to the reduction in ratio provided by the lever arm between the different bearing zones of the washer 38.
Dans la variante de la figure 8, la rondelle élastique 38 est une rondelle Belleville à angle au sommet faible, montée radialement entre la périphérie interne de la masse annulaire 22 et la périphérie externe de la pièce de renfort 26 et venant en appui radial sur des bossages de ces périphéries . Un rebord radial 50 de la pièce de renfort 26 empêche la rondelle 38 de s'échapper. Les pattes 36 de la rondelle en appui sur le bossage de la pièce de renfort 26 assurent le centrage de la rondelle et une plus grande élasticité. Eventuellement, des pattes peuvent être formées à l'autre extrémité de la rondelle et sont en appui sur le bossage de la masse annulaire 22.In the variant of FIG. 8, the elastic washer 38 is a Belleville washer with a small apex angle, mounted radially between the internal periphery of the annular mass 22 and the external periphery of the reinforcement piece 26 and coming to bear radially on bosses of these peripheries. A radial flange 50 of the reinforcement piece 26 prevents the washer 38 from escaping. The tabs 36 of the washer resting on the boss of the piece of reinforcement 26 provide centering of the washer and greater elasticity. Optionally, lugs can be formed at the other end of the washer and are supported on the boss of the annular mass 22.
En fonctionnement, les vibrations en flexion sont amorties par des frottements axiaux de la rondelle 38 sur les bossages de la masse annulaire 22 et de la pièce de renfort 26. In operation, the flexural vibrations are damped by axial friction of the washer 38 on the bosses of the annular mass 22 and of the reinforcement piece 26.

Claims

REVENDICATIONS
1 - Volant flexible pour embrayage, en particulier pour véhicule automobile, comprenant une masse annulaire (22) fixée sur une partie radialement externe d'une tôle annulaire flexible (10) dont une partie radialement interne comporte des orifices (14) de passage de moyens de fixation sur un arbre menant, une pièce annulaire de renfort (26) rapportée sur la partie radialement interne (12) de la tôle flexible1 - Flexible flywheel for a clutch, in particular for a motor vehicle, comprising an annular mass (22) fixed on a radially external part of a flexible annular sheet (10) of which a radially internal part comprises orifices (14) for passage of means for fixing on a driving shaft, an annular reinforcement piece (26) attached to the radially internal part (12) of the flexible sheet
(10) et comportant des orifices (28) de passage des moyens de fixation sur l'arbre menant, au moins une rondelle élastique (38) interposée entre la masse annulaire (22) et une partie médiane de la tôle annulaire flexible (10) , et des moyens de centrage de la rondelle élastique (38) , caractérisé en ce que les moyens de centrage comprennent des pattes formées sur la rondelle élastique (38) et coopérant avec la pièce annulaire de renfort (26) .(10) and comprising orifices (28) for passage of the fixing means on the driving shaft, at least one elastic washer (38) interposed between the annular mass (22) and a middle part of the flexible annular sheet (10) , and means for centering the elastic washer (38), characterized in that the centering means comprise tabs formed on the elastic washer (38) and cooperating with the annular reinforcing piece (26).
2 - Volant flexible selon la revendication 1, caractérisé en ce que la rondelle élastique (38) est en appui axial sur des parties arrondies (44, 46) en saillie de la masse annulaire (22) et/ou de la tôle annulaire flexible (10) et ses bords périphériques externe et interne sont écartés de la tôle annulaire flexible (10) et de la masse annulaire (22) .2 - Flexible flywheel according to claim 1, characterized in that the elastic washer (38) is in axial support on rounded parts (44, 46) projecting from the annular mass (22) and / or from the flexible annular sheet ( 10) and its outer and inner peripheral edges are spaced from the flexible annular sheet (10) and the annular mass (22).
3 - Volant flexible selon la revendication 1 ou 2, caractérisé en ce que la rondelle élastique (38) est une rondelle Belleville.3 - Flexible flywheel according to claim 1 or 2, characterized in that the elastic washer (38) is a Belleville washer.
4 - Volant flexible selon l'une des revendications 1 à 3, caractérisé en ce que les pattes de centrage (36, 50, 56, 60) sont radiales et rectilignes ou incurvées ou pliées parallèlement à 1 ' axe et assurent un centrage de la rondelle élastique (38) par coopération de formes avec la pièce annulaire de renfort (26) .4 - Flexible steering wheel according to one of claims 1 to 3, characterized in that the centering tabs (36, 50, 56, 60) are radial and rectilinear or curved or folded parallel to one axis and ensure centering of the elastic washer (38) by cooperation of shapes with the annular reinforcement piece (26).
5 - Volant flexible selon l'une des revendications 1 à 4, caractérisé en ce que lesdites pattes sont formées en plusieurs points de la périphérie de la rondelle élastique (38) .5 - flexible steering wheel according to one of claims 1 to 4, characterized in that said tabs are formed at several points on the periphery of the elastic washer (38).
6 - Volant flexible selon l'une des revendications 1 à 5, caractérisé en ce que la pièce annulaire de renfort (26) comporte des moyens (30) de calage angulaire et radial sur la tôle annulaire flexible (10) .6 - Flexible steering wheel according to one of claims 1 to 5, characterized in that the annular reinforcing piece (26) comprises means (30) for angular and radial setting on the flexible annular sheet (10).
7 - Volant flexible selon l'une des revendications 1 à 6, caractérisé en ce que la pièce annulaire de renfort (26) comprend des orifices (34) recevant les pattes de centrage de la rondelle élastique (38) .7 - Flexible steering wheel according to one of claims 1 to 6, characterized in that the annular reinforcing part (26) comprises orifices (34) receiving the centering tabs of the elastic washer (38).
8 - Volant flexible selon la revendication 7 , caractérisé en ce que les orifices (34) formés dans la pièce de renfort (26) sont des échancrures de sa périphérie externe et en ce que les pattes (36) sont formées à la périphérie interne de la rondelle élastique (38) .8 - flexible steering wheel according to claim 7, characterized in that the orifices (34) formed in the reinforcement piece (26) are notches of its outer periphery and in that the tabs (36) are formed at the inner periphery of the elastic washer (38).
9 - Volant flexible selon la revendication 7 ou 8, caractérisé en ce que les pattes (36) sont pliées axialement dans la direction opposée à la tôle flexible (10) . 10 - Volant flexible selon l'une des revendications 7 à 9, caractérisé en ce que lesdites pattes (36) comportent à leur extrémité libre des moyens (40) de retenue axiale de la pièce de renfort (26) .9 - Flexible steering wheel according to claim 7 or 8, characterized in that the tabs (36) are bent axially in the direction opposite to the flexible sheet (10). 10 - Flexible steering wheel according to one of claims 7 to 9, characterized in that said tabs (36) have at their free end means (40) for retaining the axial reinforcement piece (26).
11 - Volant flexible selon la revendication 10, caractérisé en ce que lesdits moyens de retenue axiale sont des élargissements des extrémités libres des pattes (36) .11 - Flexible steering wheel according to claim 10, characterized in that said axial retaining means are enlargements of the free ends of the legs (36).
12 - Volant flexible selon la revendication 7 à 11, caractérisé en ce que lesdites pattes (36) sont en forme de T .12 - Flexible steering wheel according to claim 7 to 11, characterized in that said tabs (36) are T-shaped.
13 - Volant flexible selon l'une des revendications précédentes, caractérisé en ce que les pattes de centrage (36) forment des bras de levier démultipliant l'effort appliqué à la rondelle élastique (38) .13 - Flexible steering wheel according to one of the preceding claims, characterized in that the centering tabs (36) form lever arms multiplying the force applied to the elastic washer (38).
14 - Volant flexible selon l'une des revendications précédentes, caractérisé en ce que la rondelle élastique (38) et la pièce annulaire (26) de renfort forment un sous-ensemble.14 - Flexible steering wheel according to one of the preceding claims, characterized in that the elastic washer (38) and the annular piece (26) of reinforcement form a sub-assembly.
15 - Volant flexible selon l'une des revendications précédentes, caractérisé en ce que la pièce annulaire de renfort (26) et la tôle flexible (10) forment un sous-ensemble, par l'intermédiaire des moyens (30) de positionnement de la pièce annulaire de renfort (26) sur la tôle flexible (10) .15 - Flexible steering wheel according to one of the preceding claims, characterized in that the annular reinforcing part (26) and the flexible sheet (10) form a sub-assembly, by means of the means (30) for positioning the annular reinforcement piece (26) on the flexible sheet (10).
16 - Volant flexible selon l'une des revendications précédentes, caractérisé en ce que la masse annulaire (22), la tôle annulaire flexible (10) , la rondelle élastique (38) et la pièce annulaire (26) de renfort forment un module préassemblé.16 - Flexible steering wheel according to one of the preceding claims, characterized in that the annular mass (22), the flexible annular sheet (10), the elastic washer (38) and the annular reinforcement piece (26) form a preassembled module.
17 - Volant flexible selon l'une des revendications 1, 3, 4, 5, 6, caractérisé en ce que la rondelle élastique (38) est montée entre la périphérie interne de la masse annulaire (22) et la périphérie externe de la pièce de renfort (26) .17 - Flexible flywheel according to one of claims 1, 3, 4, 5, 6, characterized in that the elastic washer (38) is mounted between the internal periphery of the annular mass (22) and the external periphery of the part reinforcement (26).
18 - Volant flexible selon la revendication 17, caractérisé en ce que les vibrations en flexion sont amorties par des frottements axiaux de la rondelle élastique (38) sur la masse annulaire (22) et sur la pièce de renfort (26) . 18 - Flexible flywheel according to claim 17, characterized in that the flexural vibrations are damped by axial friction of the elastic washer (38) on the annular mass (22) and on the reinforcement piece (26).
PCT/FR2002/000174 2001-01-17 2002-01-17 Flexible clutch flywheel, in particular for motor vehicle WO2002057646A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BR0203562-6A BR0203562A (en) 2001-01-17 2002-01-17 Flexible steering wheel for clutch, in particular for automotive
JP2002557686A JP2004517285A (en) 2001-01-17 2002-01-17 Flexible clutch flywheel for automobile
DE10290272T DE10290272T1 (en) 2001-01-17 2002-01-17 Flexible flywheel for a clutch, especially for motor vehicles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0100626A FR2819566B1 (en) 2001-01-17 2001-01-17 FLEXIBLE WHEEL FOR CLUTCH, ESPECIALLY FOR MOTOR VEHICLE
FR01/00626 2001-01-17

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WO2002057646A1 true WO2002057646A1 (en) 2002-07-25

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JP (1) JP2004517285A (en)
BR (1) BR0203562A (en)
DE (1) DE10290272T1 (en)
FR (1) FR2819566B1 (en)
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FR3041727B1 (en) * 2015-09-28 2017-10-20 Valeo Embrayages CLUTCH MECHANISM AND USE THEREOF IN A TRANSMISSION SYSTEM FOR A MOTOR VEHICLE

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DE10290272T1 (en) 2003-12-18
JP2004517285A (en) 2004-06-10
BR0203562A (en) 2002-12-24
FR2819566B1 (en) 2005-08-26
FR2819566A1 (en) 2002-07-19

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