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WO2014207371A1 - Clutch device - Google Patents

Clutch device Download PDF

Info

Publication number
WO2014207371A1
WO2014207371A1 PCT/FR2014/051581 FR2014051581W WO2014207371A1 WO 2014207371 A1 WO2014207371 A1 WO 2014207371A1 FR 2014051581 W FR2014051581 W FR 2014051581W WO 2014207371 A1 WO2014207371 A1 WO 2014207371A1
Authority
WO
WIPO (PCT)
Prior art keywords
support
clutch device
flywheel
connecting member
hub
Prior art date
Application number
PCT/FR2014/051581
Other languages
French (fr)
Inventor
Giovanni Grieco
Olivier Marechal
Didier BAGARD
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 DE112014003040.6T priority Critical patent/DE112014003040T5/en
Publication of WO2014207371A1 publication Critical patent/WO2014207371A1/en

Links

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
    • F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
    • F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
    • F16F15/145—Masses mounted with play with respect to driving means thus enabling free movement over a limited range
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/60—Clutching elements
    • F16D13/64—Clutch-plates; Clutch-lamellae
    • F16D13/644—Hub construction
    • F16D13/646—Mounting of the discs on the hub

Definitions

  • the present invention relates to a clutch device, in particular for a motor vehicle.
  • the patent application DE 10 2006 028 552 discloses a clutch device comprising a flywheel attached to the end of a crankshaft of a heat engine, serving as a reaction plate, a pressure plate movable relative to the reaction plate between a position close to said trays, wherein said trays clamp a friction disc, and a position spaced from said trays, wherein said trays release the friction disc.
  • the latter is rotatably coupled to a central hub by means of spring damping means.
  • the central hub comprises splines cooperating with complementary splines of an input shaft of a gearbox.
  • the hub is further equipped with pendular damping means.
  • pendular damping means include a support whose radially inner periphery is fixed to the hub and whose radially outer portion is equipped with pendular masses, movable relative to the support.
  • pendular damping means can dampen and absorb vibration and motor rotation acyclisms.
  • the friction disk is equipped with liners for rubbing against the pressure plate and against the reaction plate. These packings wear out during operation, which modifies the position of the friction disk and, consequently, of the hub to which it is attached. Thus, in such a case, the position of the pendular damping means is also variable over time, in particular as a function of the wear of said linings.
  • the mounting of the hub on the input shaft of the gearbox is performed with clearance, which allows a hub of the hub relative to the shaft, again generating an imprecision as to the position actual pendulum damping means in operation.
  • the tree can flex in significant proportions, when it transmits a significant torque.
  • the space available to house the clutch device is relatively low and subject to numerous constraints of space.
  • the displacement of the damping means can disturb their efficiency as well as the operation of the clutch mechanism itself (poor release of the friction disc, noisiness phenomena).
  • the patent application DE 196 18 864 discloses a clutch device in which the support of the pendular masses is rotatably mounted on the flywheel and is rotatably coupled to the hub by means of a riveted connecting member. at the hub. The connection between the connecting member and the support of the pendular masses is provided by disengageable means.
  • Such a structure in addition to its significant complexity, is also dependent on the axial position of the hub. Indeed, in operation, the wear of the lining of the friction disc, the hub swiveling phenomenon with respect to the shaft and the bending phenomenon of the shaft cause a displacement of the connecting member that can affect the operation. disengageable means and, consequently, the effectiveness of the pendular masses.
  • the invention aims in particular to provide a simple, effective and economical solution to these problems.
  • a clutch device comprising a steering wheel intended to be fixed to an input shaft, such for example that a crankshaft, and a hub rotatably coupled to an output shaft, such as for example an input shaft of a gearbox, a clutch mechanism for coupling or decoupling in rotation the steering wheel and the hub, damping means comprising a support equipped with pendular masses, movable relative to said support, the support being rotatably mounted on the flywheel, characterized in that the damping means comprise a connecting member mounted directly on the output shaft and rotatably coupled thereto.
  • the connecting member is mounted directly on the output shaft and not on the hub, the positions of the support, the pendulum masses or the connecting member of the damping means are not modified during operation. This preserves the effectiveness of the damping means and the clutch mechanism.
  • the structure of the device according to the invention is also relatively simple. It is also possible to reduce the size of the clutch device, for the reasons mentioned above.
  • the steering wheel comprises an annular flange around which is mounted the support, via a bearing.
  • the support may comprise a first annular portion, radially internal, pivotally mounted on the flywheel, and a second annular portion, radially external, fixed to the first part, on which are mounted the pendulum masses.
  • the connecting member may be formed by at least one piece separate from the support and attached to the support.
  • the connecting member may comprise a sheet extending radially between the support and the output shaft, so as to reduce the useless mass of the pendular damping means and their size.
  • a sheet preferably flexible, it also makes it possible to prevent the bending phenomena of the output shaft during operation from affecting the efficiency of the pendular masses.
  • the connecting member may comprise splines at its radially inner periphery, cooperating with complementary splines of the output shaft.
  • the connecting member comprises a ring whose radially inner periphery comprises the grooves cooperating with the complementary splines of the output shaft, said ring being fixed at the radially inner periphery of the sheet.
  • the radially inner periphery of the connecting member, coupled to the output shaft, is situated axially facing the portion of the support equipped with the pendulum masses.
  • the flywheel comprises a first portion, said upstream, intended to be fixed to the input shaft, around which is mounted the support equipped with pendular masses, a second part, called downstream, fixed to the first part and delimiting with the latter an annular cavity in which are housed, at least in part, the support and the pendular masses.
  • the clutch mechanism may comprise a movable pressure plate relative to a reaction plate, said pressure and reaction plates being able to clamp or release a friction disk coupled in rotation to the hub, the plate of reaction being formed by the second part of the steering wheel.
  • friction disk can be coupled to the hub via damping means and / or pre-damping means.
  • Pre-damping means are in particular known from the patent application FR 2 984 982, in the name of the Applicant.
  • FIG. 1 is a view in axial section of a clutch device according to the invention
  • FIG. 2 is a view in axial section of a part of the device of FIG. 1,
  • FIG. 3 is a perspective view of a connecting member of the device of Figures 1 and 2.
  • FIGs 1 to 3 illustrate an embodiment of a clutch device 1 according to the invention. It comprises a wheel 2, located upstream in Figure 1, having a first annular portion 3 and a second annular portion 4.
  • the first part 3 comprises a radial portion 5 whose radially inner periphery comprises screw holes 7 for fixing the flywheel 2 to the downstream end of a crankshaft 8 of an internal combustion engine of a motor vehicle.
  • An annular flange 9 extends axially downstream from the downstream surface of the radial portion 5. This flange 9 has a radially outer surface 10 which is cylindrical.
  • the radially outer periphery of the radial portion 5 carries a ring gear 11 and is extended by a cylindrical rim 12 extending downstream, itself extended by a projecting portion 13, annular and radially external.
  • the second portion 4 has a radial portion 14, the radially outer periphery is extended by a cylindrical rim 15 extending downstream.
  • the upstream radial face of the second portion 4 comprises an annular outer annular peripheral zone 16 which receives the annular projecting portion 13 of the first portion 3.
  • the flat free end of the flange 12 bears on the radial face. upstream of the second part 4.
  • the two parts 3, 4 of the wheel 2 are fixed to one another at their radially outer periphery, by means of screws 17.
  • the screws 17 also serve for fixing a lid 18 in the form of a bell, fixed downstream of the second part 4 of the flywheel 2, the internal volume of the cover 18 serving to house, at least in part, a clutch mechanism 19.
  • the second part 4 of the flywheel 2 comprises a radial downstream surface 20 serving to support the linings 21 of a friction disc 22 of the clutch mechanism 19. This second part 4 thus forms a reaction plate of the clutch mechanism 19.
  • the friction disc 22 is connected to a central hub 23 by means of spring damping means 24 and spring damping means 25.
  • the structure of these damping means 24 and of pre-damping means 24 depreciation 25 will not be detailed here and is known from the prior art, including the patent application FR 2 984 982 in the name of the Applicant.
  • the hub 23 comprises internal splines 26, cooperating with external splines of an input shaft 27 of a gearbox, also called output shaft of the clutch device 1.
  • the clutch mechanism 19 further comprises a pressure plate 28, movable in axial translation relative to the reaction plate 4, between a position close to the reaction plate 4, in which said plates 4, 28 grip the friction disk 22. (engaged position), and a position spaced from said plates 4, 28, wherein said plates 4, 28 release the friction disc 22 (disengaged position).
  • the trays 4, 28, the cover 18 and the flywheel 2 are coupled in rotation with each other.
  • the displacement of the pressure plate 28 is actuated by means of a diaphragm 29, bearing on the cover 18 at zones 30, as is well known per se.
  • the clutch device 1 comprises pendular damping means 31 comprising a support consisting of a first part 32, radially internal, and a second part 33, radially external, fixed one to the other by
  • the first portion 3 of the flywheel 2 has holes 40 for the passage of a riveting tool, for the establishment of the rivets 34.
  • the first portion 32 is pivotally mounted around the outer surface 10 of the flange 9 of the first portion 3 of the wheel 2, via a bearing, such as for example a ball bearing 35.
  • the second part 33 s extends radially and serves to mount pendular masses 36. More particularly, the masses 36 are mounted in pairs, the masses 36 of the same pair being mounted opposite one another and on both sides of the second part 33 of the support.
  • the masses 36 comprise elongated holes 37 in the form of an arc in which the ends of the rollers 38 are engaged (FIG. 2).
  • the middle regions of the rollers 38 are engaged in arcuate elongated holes 39 of the second portion 33 of the support.
  • Other types of assembly known to those skilled in the art, can also be used to mount the pendular masses 36 on the support 32, 33.
  • the masses 36 are thus animated in a pendular movement relative to the support 32, 33, the trajectories of the masses 36 being in particular dependent on the shapes of the oblong holes 37, 39.
  • a connecting member 41 connects the support 33, 34 to the input shaft 27 of the gearbox.
  • This connecting member 41 comprises a metal sheet 42 thin and flexible, with a thickness between 0.4 and 1.5 mm.
  • the radially outer periphery of the sheet 42 has holes 43 allowing the rivets 34 to pass therethrough so as to fasten the sheet 42 to the support 32, 33.
  • the radially inner periphery of the sheet 42 is fixed, for example by riveting, to a ring 44. More particularly, the ring 44 comprises a flange 45 extending radially outwards, fixed to the sheet 42, and a radially inner periphery comprising splines 46, cooperating with complementary splines of the shaft 27.
  • the ring 44 is located axially in the support 32, 34 and the pendular masses 36. Such a position of the ring 44 is in particular permitted by the shape of the sheet 42, the latter comprising areas 47 extending axially so as to bypass the flange 9 and the The shape of the sheet 42 also makes it possible to compensate, by deformation, for the aforementioned bending phenomena of the shaft 27.
  • the sheet 42 also comprises holes 48 allowing the screws 7 to pass through.
  • the rotation of the crankshaft 8 drives that of the shaft 27, in the engaged position of the clutch mechanism 19.
  • the rotation speeds of the shaft 27 and the steering wheel 2 may be different from each other.
  • the rotation of the shaft 27 causes the rotation of the support 32, 33 equipped with the pendulum masses 36, by means of the connecting member 41.
  • the efficiency of these pendular damping means 31 is not affected by a displacement of the hub 23, due in particular to a wear of the linings 21 of the friction disc 22 or a swiveling of the hub 23 on the 27.
  • the flexible nature of the sheet 42 makes it possible to prevent the bending phenomena of the shaft 27 from affecting the behavior and efficiency of the pendular damping means 31.

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

Abstract

The invention relates to a clutch device (1) comprising a flywheel (2) intended for being attached to an input shaft, such as for example a crankshaft (8), and a hub (23) rotatably coupled to an output shaft, for example such as an input shaft (27) of a gearbox, a clutch mechanism (19) making it possible to rotatably couple or uncouple the flywheel and the hub, damping means (31) comprising a mounting (32, 33) provided with pendulous masses (36), movable relative to said mounting, the mounting being mounted so as to be rotatably movable on the flywheel, wherein the damping means comprise a linking member (41) mounted directly on the output shaft and rotatably coupled thereto.

Description

Dispositif d'embrayage  Clutch device
La présente invention concerne un dispositif d'embrayage, notamment pour véhicule automobile. The present invention relates to a clutch device, in particular for a motor vehicle.
La demande de brevet DE 10 2006 028 552 divulgue un dispositif d'embrayage comportant un volant fixé à l'extrémité d'un vilebrequin d'un moteur thermique, servant de plateau de réaction, un plateau de pression mobile par rapport au plateau de réaction entre une position rapprochée desdits plateaux, dans laquelle lesdits plateaux serrent un disque de friction, et une position écartée desdits plateaux, dans laquelle lesdits plateaux libèrent le disque de friction.  The patent application DE 10 2006 028 552 discloses a clutch device comprising a flywheel attached to the end of a crankshaft of a heat engine, serving as a reaction plate, a pressure plate movable relative to the reaction plate between a position close to said trays, wherein said trays clamp a friction disc, and a position spaced from said trays, wherein said trays release the friction disc.
Ce dernier est couplé en rotation à un moyeu central par l'intermédiaire de moyens d'amortissement à ressorts. Le moyeu central comporte des cannelures coopérant avec des cannelures complémentaires d'un arbre d'entrée d'une boîte de vitesses.  The latter is rotatably coupled to a central hub by means of spring damping means. The central hub comprises splines cooperating with complementary splines of an input shaft of a gearbox.
Le moyeu est en outre équipé de moyens d'amortissement pendulaires. Ces derniers comportent un support dont la périphérie radialement interne est fixée au moyeu et dont la partie radialement externe est équipée de masses pendulaires, mobiles par rapport au support. De tels moyens d'amortissement pendulaires permettent d'amortir et d'absorber les vibrations et les acyclismes de rotation du moteur.  The hub is further equipped with pendular damping means. These include a support whose radially inner periphery is fixed to the hub and whose radially outer portion is equipped with pendular masses, movable relative to the support. Such pendular damping means can dampen and absorb vibration and motor rotation acyclisms.
Le disque de friction est équipé de garnitures destinées à frotter contre le plateau de pression et contre le plateau de réaction. Ces garnitures s'usent en fonctionnement, ce qui modifie la position du disque de friction et, par conséquent, du moyeu auquel il est lié. Ainsi, dans un tel cas, la position des moyens d'amortissement pendulaire est également variable au cours du temps, notamment en fonction de l'usure desdites garnitures.  The friction disk is equipped with liners for rubbing against the pressure plate and against the reaction plate. These packings wear out during operation, which modifies the position of the friction disk and, consequently, of the hub to which it is attached. Thus, in such a case, the position of the pendular damping means is also variable over time, in particular as a function of the wear of said linings.
Par ailleurs, le montage du moyeu sur l'arbre d'entrée de la boîte de vitesses est réalisé avec jeu, ce qui permet un rotulage du moyeu par rapport à l'arbre, générant là encore une imprécision quant à la position réelle des moyens d'amortissement pendulaires en fonctionnement. Enfin, l'arbre peut fléchir dans des proportions non négligeables, lorsqu'il transmet un couple important. Furthermore, the mounting of the hub on the input shaft of the gearbox is performed with clearance, which allows a hub of the hub relative to the shaft, again generating an imprecision as to the position actual pendulum damping means in operation. Finally, the tree can flex in significant proportions, when it transmits a significant torque.
De telles imprécisions de positionnement obligent à concevoir des cavités relativement grandes, destinées à loger les moyens d"amortissement, en vue d'éviter tout risque d'interférence ou de collision avec d'autres parties du dispositif d'embrayage.  Such positioning inaccuracies require the design of relatively large cavities intended to accommodate the damping means, in order to avoid any risk of interference or collision with other parts of the clutch device.
Cependant, dans un véhicule automobile par exemple, l'espace disponible pour loger le dispositif d'embrayage est relativement faible et soumis à de nombreuses contraintes d'encombrement.  However, in a motor vehicle for example, the space available to house the clutch device is relatively low and subject to numerous constraints of space.
Par ailleurs, le déplacement des moyens d'amortissement peut perturber leur efficacité ainsi que le fonctionnement du mécanisme d'embrayage lui-même (mauvaise libération du disque de friction, phénomènes de bruyance).  Moreover, the displacement of the damping means can disturb their efficiency as well as the operation of the clutch mechanism itself (poor release of the friction disc, noisiness phenomena).
La demande de brevet DE 196 18 864 divulgue un dispositif d'embrayage dans lequel le support des masses pendulaires est monté de façon mobile en rotation sur le volant et est couplé en rotation au moyeu, par l'intermédiaire d'un organe de liaison riveté au moyeu. La liaison entre l'organe de liaison et le support des masses pendulaires est assuré par des moyens débrayables.  The patent application DE 196 18 864 discloses a clutch device in which the support of the pendular masses is rotatably mounted on the flywheel and is rotatably coupled to the hub by means of a riveted connecting member. at the hub. The connection between the connecting member and the support of the pendular masses is provided by disengageable means.
Une telle structure, outre son importante complexité, est également tributaire de la position axiale du moyeu. En effet, en fonctionnement, l'usure des garnitures du disque de friction, le phénomène de rotulage du moyeu par rapport à l'arbre et le phénomène de flexion de l'arbre provoquent un déplacement de l'organe de liaison pouvant affecter le fonctionnement des moyens débrayables et, par conséquent, l'efficacité des masses pendulaires.  Such a structure, in addition to its significant complexity, is also dependent on the axial position of the hub. Indeed, in operation, the wear of the lining of the friction disc, the hub swiveling phenomenon with respect to the shaft and the bending phenomenon of the shaft cause a displacement of the connecting member that can affect the operation. disengageable means and, consequently, the effectiveness of the pendular masses.
L'invention a notamment pour but d'apporter une solution simple, efficace et économique à ces problèmes.  The invention aims in particular to provide a simple, effective and economical solution to these problems.
A cet effet, elle propose un dispositif d'embrayage comportant un volant destiné à être fixé à un arbre d'entrée, tel par exemple qu'un vilebrequin, et un moyeu couplé en rotation à un arbre de sortie, tel par exemple qu'un arbre d'entrée d'une boîte de vitesses, un mécanisme d'embrayage permettant de coupler ou découpler en rotation le volant et le moyeu, des moyens d'amortissement comportant un support équipé de masses pendulaires, mobiles par rapport audit support, le support étant monté de façon mobile en rotation sur le volant, caractérisé en ce que les moyens d'amortissement comportent un organe de liaison monté directement sur l'arbre de sortie et couplé en rotation à celui-ci. For this purpose, it proposes a clutch device comprising a steering wheel intended to be fixed to an input shaft, such for example that a crankshaft, and a hub rotatably coupled to an output shaft, such as for example an input shaft of a gearbox, a clutch mechanism for coupling or decoupling in rotation the steering wheel and the hub, damping means comprising a support equipped with pendular masses, movable relative to said support, the support being rotatably mounted on the flywheel, characterized in that the damping means comprise a connecting member mounted directly on the output shaft and rotatably coupled thereto.
L'organe de liaison étant monté directement sur l'arbre de sortie et non sur le moyeu, les positions du support, des masses pendulaires ou de l'organe de liaison des moyens d'amortissement ne sont pas modifiées en fonctionnement. On préserve ainsi l'efficacité des moyens d'amortissement et du mécanisme d'embrayage. La structure du dispositif selon l'invention est en outre relativement simple. Il est également possible de réduire l'encombrement du dispositif d'embrayage, pour les raisons évoquées précédemment.  Since the connecting member is mounted directly on the output shaft and not on the hub, the positions of the support, the pendulum masses or the connecting member of the damping means are not modified during operation. This preserves the effectiveness of the damping means and the clutch mechanism. The structure of the device according to the invention is also relatively simple. It is also possible to reduce the size of the clutch device, for the reasons mentioned above.
Selon une caractéristique de l'invention, le volant comporte un rebord annulaire autour duquel est monté le support, par l'intermédiaire d'un palier.  According to a characteristic of the invention, the steering wheel comprises an annular flange around which is mounted the support, via a bearing.
En outre, le support peut comporter une première partie annulaire, radialement interne, montée de façon pivotante sur le volant, et une seconde partie annulaire, radialement externe, fixée à la première partie, sur laquelle sont montées les masses pendulaires.  In addition, the support may comprise a first annular portion, radially internal, pivotally mounted on the flywheel, and a second annular portion, radially external, fixed to the first part, on which are mounted the pendulum masses.
De plus, l'organe de liaison peut être formé par au moins une pièce distincte du support et fixée au support.  In addition, the connecting member may be formed by at least one piece separate from the support and attached to the support.
Ces caractéristiques permettent de simplifier la réalisation et le montage des différents éléments des moyens d'amortissement pendulaires.  These characteristics make it possible to simplify the construction and assembly of the various elements of the pendular damping means.
Dans ce cas, l'organe de liaison peut comporter une tôle s'étendant radialement entre le support et l'arbre de sortie, de manière à réduire la masse non utile des moyens d'amortissement pendulaires ainsi que leur encombrement. L'utilisation d'une tôle, de préférence flexible, permet en outre d'éviter que les phénomènes de flexion de l'arbre de sortie en fonctionnement affectent l'efficacité des masses pendulaires. In this case, the connecting member may comprise a sheet extending radially between the support and the output shaft, so as to reduce the useless mass of the pendular damping means and their size. The use of a sheet, preferably flexible, it also makes it possible to prevent the bending phenomena of the output shaft during operation from affecting the efficiency of the pendular masses.
Par ailleurs, l'organe de liaison peut comporter des cannelures à sa périphérie radialement interne, coopérant avec des cannelures complémentaires de l'arbre de sortie.  Furthermore, the connecting member may comprise splines at its radially inner periphery, cooperating with complementary splines of the output shaft.
Selon une forme de réalisation de l'invention, l'organe de liaison comporte une bague dont la périphérie radialement interne comporte les cannelures coopérant avec les cannelures complémentaires de l'arbre de sortie, ladite bague étant fixée en périphérie radialement interne de la tôle.  According to one embodiment of the invention, the connecting member comprises a ring whose radially inner periphery comprises the grooves cooperating with the complementary splines of the output shaft, said ring being fixed at the radially inner periphery of the sheet.
De préférence, la périphérie radialement interne de l'organe de liaison, couplée à l'arbre de sortie, est située axialement en regard de la partie du support équipée des masses pendulaires.  Preferably, the radially inner periphery of the connecting member, coupled to the output shaft, is situated axially facing the portion of the support equipped with the pendulum masses.
Ceci permet de réduire l'encombrement axial de l'ensemble. Avantageusement, le volant comporte une première partie, dite amont, destinée à être fixée à l'arbre d'entrée, autour de laquelle est monté le support équipé des masses pendulaires, une seconde partie, dite aval, fixée à la première partie et délimitant avec cette dernière une cavité annulaire dans laquelle sont logés, au moins en partie, le support et les masses pendulaires.  This reduces the axial size of the assembly. Advantageously, the flywheel comprises a first portion, said upstream, intended to be fixed to the input shaft, around which is mounted the support equipped with pendular masses, a second part, called downstream, fixed to the first part and delimiting with the latter an annular cavity in which are housed, at least in part, the support and the pendular masses.
Dans ce cas, le mécanisme d'embrayage peut comporter un plateau de pression mobile par rapport à un plateau de réaction, lesdits plateaux de pression et de réaction étant aptes à serrer ou libérer un disque de friction couplé en rotation au moyeu, le plateau de réaction étant formé par la seconde partie du volant.  In this case, the clutch mechanism may comprise a movable pressure plate relative to a reaction plate, said pressure and reaction plates being able to clamp or release a friction disk coupled in rotation to the hub, the plate of reaction being formed by the second part of the steering wheel.
Par ailleurs, le disque de friction peut être couplé au moyeu par l'intermédiaire de moyens d'amortissement et/ou de moyens de préamortissement.  Furthermore, the friction disk can be coupled to the hub via damping means and / or pre-damping means.
Des moyens de pré-amortissement sont notamment connus de la demande de brevet FR 2 984 982, au nom de la Demanderesse.  Pre-damping means are in particular known from the patent application FR 2 984 982, in the name of the Applicant.
L'invention sera mieux comprise et d'autres détails, caractéristiques et avantages de l'invention apparaîtront à la lecture de la description suivante faite à titre d'exemple non limitatif en référence aux dessins annexés dans lesquels : The invention will be better understood and other details, features and advantages of the invention will become apparent on reading the following description given by way of non-limiting example with reference to the accompanying drawings in which:
- la figure 1 est une vue en coupe axiale d'un dispositif d'embrayage selon l'invention,  FIG. 1 is a view in axial section of a clutch device according to the invention,
- la figure 2 est une vue en coupe axiale d'une partie du dispositif de la figure 1 ,  FIG. 2 is a view in axial section of a part of the device of FIG. 1,
- la figure 3 est une vue en perspective d'un organe de liaison du dispositif des figures 1 et 2.  - Figure 3 is a perspective view of a connecting member of the device of Figures 1 and 2.
Les figures 1 à 3 illustrent une forme de réalisation d'un dispositif d'embrayage 1 selon l'invention. Celui-ci comporte un volant 2, situé à l'amont sur la figure 1 , comportant une première partie 3 annulaire et une seconde partie 4 annulaire. La première partie 3 comporte une portion radiale 5 dont la périphérie radialement interne comprend des trous 6 de passage de vis 7 servant à la fixation du volant 2 sur l'extrémité aval d'un vilebrequin 8 d'un moteur à combustion interne d'un véhicule automobile. Un rebord annulaire 9 s'étend axialement vers l'aval depuis la surface aval de la partie radiale 5. Ce rebord 9 comporte une surface radialement externe 10 qui est cylindrique.  Figures 1 to 3 illustrate an embodiment of a clutch device 1 according to the invention. It comprises a wheel 2, located upstream in Figure 1, having a first annular portion 3 and a second annular portion 4. The first part 3 comprises a radial portion 5 whose radially inner periphery comprises screw holes 7 for fixing the flywheel 2 to the downstream end of a crankshaft 8 of an internal combustion engine of a motor vehicle. An annular flange 9 extends axially downstream from the downstream surface of the radial portion 5. This flange 9 has a radially outer surface 10 which is cylindrical.
La périphérie radialement externe de la partie radiale 5 porte une couronne dentée 1 1 et est prolongée par un rebord cylindrique 12 s'étendant vers l'aval, lui-même prolongé par une partie en saillie 13, annulaire et radialement externe.  The radially outer periphery of the radial portion 5 carries a ring gear 11 and is extended by a cylindrical rim 12 extending downstream, itself extended by a projecting portion 13, annular and radially external.
La seconde partie 4 comporte une partie radiale 14, dont la périphérie radialement externe est prolongée par un rebord cylindrique 15 s'étendant vers l'aval . La face radiale amont de la seconde partie 4 comporte une zone périphérique externe annulaire en creux 16 qui reçoit la partie en saillie annulaire 13 de la première partie 3. En outre, l'extrémité libre plane du rebord 12 est en appui sur la face radiale amont de la seconde partie 4. Les deux parties 3, 4 du volant 2 sont fixées l'une à l'autre, à leur périphérie radialement externe, par l'intermédiaire de vis 17. Les vis 17 servent également à la fixation d'un couvercle 18 en forme de cloche, fixé en aval de la seconde partie 4 du volant 2, le volume interne du couvercle 18 servant à loger, au moins en partie, un mécanisme d'embrayage 19. The second portion 4 has a radial portion 14, the radially outer periphery is extended by a cylindrical rim 15 extending downstream. The upstream radial face of the second portion 4 comprises an annular outer annular peripheral zone 16 which receives the annular projecting portion 13 of the first portion 3. In addition, the flat free end of the flange 12 bears on the radial face. upstream of the second part 4. The two parts 3, 4 of the wheel 2 are fixed to one another at their radially outer periphery, by means of screws 17. The screws 17 also serve for fixing a lid 18 in the form of a bell, fixed downstream of the second part 4 of the flywheel 2, the internal volume of the cover 18 serving to house, at least in part, a clutch mechanism 19.
La seconde partie 4 du volant 2 comporte une surface aval radiale 20 servant à l'appui des garnitures 21 d'un disque de friction 22 du mécanisme d'embrayage 19. Cette seconde partie 4 forme ainsi un plateau de réaction du mécanisme d'embrayage 19. Le disque de friction 22 est relié à un moyeu central 23 par l'intermédiaire de moyens d'amortissement à ressorts 24 et de moyens de pré-amortissement à ressorts 25. La structure de ces moyens d'amortissement 24 et de pré-amortissement 25 ne sera pas détaillée ici et est connue de l'art antérieur, notamment de la demande de brevet FR 2 984 982 au nom de la Demanderesse.  The second part 4 of the flywheel 2 comprises a radial downstream surface 20 serving to support the linings 21 of a friction disc 22 of the clutch mechanism 19. This second part 4 thus forms a reaction plate of the clutch mechanism 19. The friction disc 22 is connected to a central hub 23 by means of spring damping means 24 and spring damping means 25. The structure of these damping means 24 and of pre-damping means 24 depreciation 25 will not be detailed here and is known from the prior art, including the patent application FR 2 984 982 in the name of the Applicant.
Le moyeu 23 comporte des cannelures internes 26, coopérant avec des cannelures externes d'un arbre d'entrée 27 d'une boîte de vitesses, également appelé arbre de sortie du dispositif d'embrayage 1 .  The hub 23 comprises internal splines 26, cooperating with external splines of an input shaft 27 of a gearbox, also called output shaft of the clutch device 1.
Le mécanisme d'embrayage 19 comporte en outre un plateau de pression 28, mobile en translation axiale par rapport au plateau de réaction 4, entre une position rapprochée du plateau de réaction 4, dans laquelle lesdits plateaux 4, 28 serrent le disque de friction 22 (position embrayée), et une position écartée desdits plateaux 4, 28, dans laquelle lesdits plateaux 4, 28 libèrent le disque de friction 22 (position débrayée). Les plateaux 4, 28, le couvercle 18 et le volant 2 sont couplés en rotation les uns avec les autres.  The clutch mechanism 19 further comprises a pressure plate 28, movable in axial translation relative to the reaction plate 4, between a position close to the reaction plate 4, in which said plates 4, 28 grip the friction disk 22. (engaged position), and a position spaced from said plates 4, 28, wherein said plates 4, 28 release the friction disc 22 (disengaged position). The trays 4, 28, the cover 18 and the flywheel 2 are coupled in rotation with each other.
Le déplacement du plateau de pression 28 est actionné par l'intermédiaire d'un diaphragme 29, en appui sur le couvercle 18 au niveau de zones 30, comme cela est bien connu en soi.  The displacement of the pressure plate 28 is actuated by means of a diaphragm 29, bearing on the cover 18 at zones 30, as is well known per se.
Conformément à l'invention, le dispositif d'embrayage 1 comporte des moyens d'amortissement pendulaires 31 comportant un support constitué d'une première partie 32, radialement interne, et d'une seconde partie 33, radialement externe, fixées l'une à l'autre par l'intermédiaire de rivets 34. La première partie 3 du volant 2 comporte des trous 40 servant au passage d'un outil de rivetage, pour la mise en place des rivets 34. According to the invention, the clutch device 1 comprises pendular damping means 31 comprising a support consisting of a first part 32, radially internal, and a second part 33, radially external, fixed one to the other by The first portion 3 of the flywheel 2 has holes 40 for the passage of a riveting tool, for the establishment of the rivets 34.
La première partie 32 est montée pivotante autour de la surface externe 10 du rebord 9 de la première partie 3 du volant 2, par l'intermédiaire d'un palier, tel par exemple qu'un roulement à billes 35. La seconde partie 33 s'étend radialement et sert au montage de masses pendulaires 36. Plus particulièrement, les masses 36 sont montées par paires, les masses 36 d'une même paire étant montées en regard l'une de l'autre et de part et d'autre de la seconde partie 33 du support. Les masses 36 comportent des trous oblongs 37 en forme d'arc, dans lesquels sont engagées les extrémités de rouleaux 38 (figure 2). Les zones médianes des rouleaux 38 sont engagées dans des trous oblongs 39 en forme d'arc de la seconde partie 33 du support. D'autres types de montage, connus de l'homme du métier, peuvent également être utilisés afin de monter les masses pendulaires 36 sur le support 32, 33.  The first portion 32 is pivotally mounted around the outer surface 10 of the flange 9 of the first portion 3 of the wheel 2, via a bearing, such as for example a ball bearing 35. The second part 33 s extends radially and serves to mount pendular masses 36. More particularly, the masses 36 are mounted in pairs, the masses 36 of the same pair being mounted opposite one another and on both sides of the second part 33 of the support. The masses 36 comprise elongated holes 37 in the form of an arc in which the ends of the rollers 38 are engaged (FIG. 2). The middle regions of the rollers 38 are engaged in arcuate elongated holes 39 of the second portion 33 of the support. Other types of assembly, known to those skilled in the art, can also be used to mount the pendular masses 36 on the support 32, 33.
Lors de la rotation du support 32, 33, les masses 36 sont ainsi animées d'un mouvement pendulaire par rapport au support 32, 33, les trajectoires des masses 36 étant notamment dépendantes des formes des trous oblongs 37, 39.  During the rotation of the support 32, 33, the masses 36 are thus animated in a pendular movement relative to the support 32, 33, the trajectories of the masses 36 being in particular dependent on the shapes of the oblong holes 37, 39.
Un organe de liaison 41 relie le support 33, 34 à l'arbre d'entrée 27 de la boîte de vitesses. Cet organe de liaison 41 , mieux visible à la figure 3, comporte une tôle métallique 42 fine et flexible, d'épaisseur comprise entre 0,4 et 1 ,5 mm. La périphérie radialement externe de la tôle 42 comporte des trous 43 permettant le passage des rivets 34, de manière à fixer la tôle 42 sur le support 32, 33. La périphérie radialement interne de la tôle 42 est fixée, par exemple par rivetage, à une bague 44. Plus particulièrement, la bague 44 comporte une collerette 45 s'étendant radialement vers l'extérieur, fixée à la tôle 42, et une périphérie radialement interne comprenant des cannelures 46, coopérant avec des cannelures complémentaires de l'arbre 27. La bague 44 est située axialement en regard du support 32, 34 et des masses pendulaires 36. Une telle position de la bague 44 est notamment permise par la forme de la tôle 42, cette dernière comportant des zones 47 s'étendant axialement de façon à contourner notamment le rebord 9 et le palier 35. La forme de la tôle 42 permet également de compenser, par déformation, les phénomènes précités de flexion de l'arbre 27. La tôle 42 comporte en outre des trous 48 permettant le passage des vis 7. A connecting member 41 connects the support 33, 34 to the input shaft 27 of the gearbox. This connecting member 41, better visible in Figure 3, comprises a metal sheet 42 thin and flexible, with a thickness between 0.4 and 1.5 mm. The radially outer periphery of the sheet 42 has holes 43 allowing the rivets 34 to pass therethrough so as to fasten the sheet 42 to the support 32, 33. The radially inner periphery of the sheet 42 is fixed, for example by riveting, to a ring 44. More particularly, the ring 44 comprises a flange 45 extending radially outwards, fixed to the sheet 42, and a radially inner periphery comprising splines 46, cooperating with complementary splines of the shaft 27. The ring 44 is located axially in the support 32, 34 and the pendular masses 36. Such a position of the ring 44 is in particular permitted by the shape of the sheet 42, the latter comprising areas 47 extending axially so as to bypass the flange 9 and the The shape of the sheet 42 also makes it possible to compensate, by deformation, for the aforementioned bending phenomena of the shaft 27. The sheet 42 also comprises holes 48 allowing the screws 7 to pass through.
En fonctionnement, la rotation du vilebrequin 8 entraîne celle de l'arbre 27, en position embrayée du mécanisme d'embrayage 19. Lors des phases de débrayage (changement du rapport de vitesses, par exemple), les vitesses de rotation de l'arbre 27 et du volant 2 peuvent être différentes l'une de l'autre. Dans tous les cas, la rotation de l'arbre 27 entraîne la rotation du support 32, 33 équipé des masses pendulaires 36, par l'intermédiaire de l'organe de liaison 41 . Comme indiqué précédemment, l'efficacité de ces moyens d'amortissement pendulaires 31 n'est pas affectée par un déplacement du moyeu 23, dû notamment à une usure des garnitures 21 du disque de friction 22 ou à un rotulage du moyeu 23 sur l'arbre 27. Par ailleurs, le caractère flexible de la tôle 42 permet d'éviter que les phénomènes de flexion de l'arbre 27 affectent le comportement et l'efficacité des moyens d'amortissement pendulaires 31 .  In operation, the rotation of the crankshaft 8 drives that of the shaft 27, in the engaged position of the clutch mechanism 19. During the declutching phases (gear ratio change, for example), the rotation speeds of the shaft 27 and the steering wheel 2 may be different from each other. In all cases, the rotation of the shaft 27 causes the rotation of the support 32, 33 equipped with the pendulum masses 36, by means of the connecting member 41. As indicated above, the efficiency of these pendular damping means 31 is not affected by a displacement of the hub 23, due in particular to a wear of the linings 21 of the friction disc 22 or a swiveling of the hub 23 on the 27. Moreover, the flexible nature of the sheet 42 makes it possible to prevent the bending phenomena of the shaft 27 from affecting the behavior and efficiency of the pendular damping means 31.

Claims

REVENDICATIONS
1 . Dispositif d'embrayage (1 ) comportant un volant (2) destiné à être fixé à un arbre d'entrée, tel par exemple qu'un vilebrequin (8), et un moyeu (23) couplé en rotation à un arbre de sortie, tel par exemple qu'un arbre d'entrée (27) d'une boîte de vitesses, un mécanisme d'embrayage (19) permettant de coupler ou découpler en rotation le volant (2) et le moyeu (23), des moyens d'amortissement (31 ) comportant un support (32, 33) équipé de masses pendulaires (36), mobiles par rapport audit support (32 , 33), le support (32, 33) étant monté de façon mobile en rotation sur le volant (2), caractérisé en ce que les moyens d'amortissement (31 ) comportent un organe de liaison (41 ) monté directement sur l'arbre de sortie (27) et couplé en rotation à celui-ci. 1. Clutch device (1) comprising a flywheel (2) intended to be fixed to an input shaft, such as for example a crankshaft (8), and a hub (23) coupled in rotation to an output shaft, such as for example an input shaft (27) of a gearbox, a clutch mechanism (19) for coupling or decoupling in rotation the flywheel (2) and the hub (23), means for damping means (31) comprising a support (32, 33) equipped with pendulum masses (36) movable relative to said support (32, 33), the support (32, 33) being rotatably mounted on the flywheel ( 2), characterized in that the damping means (31) comprise a connecting member (41) mounted directly on the output shaft (27) and rotatably coupled thereto.
2. Dispositif d'embrayage (1 ) selon la revendication 1 , caractérisé en ce que le volant (2) comporte un rebord annulaire (9) autour duquel est monté le support (32, 33) par l'intermédiaire d'un palier (35).  2. clutch device (1) according to claim 1, characterized in that the flywheel (2) comprises an annular rim (9) around which is mounted the support (32, 33) via a bearing ( 35).
3. Dispositif d'embrayage (1 ) selon la revendication 1 ou 2, caractérisé en ce que le support comporte une première partie (32) annulaire, radialement interne, montée de façon pivotante sur le volant (2), et une seconde partie (33) annulaire, radialement externe, fixée à la première partie (32) et sur laquelle sont montées les masses pendulaires (36).  3. clutch device (1) according to claim 1 or 2, characterized in that the support comprises a first portion (32) annular, radially internal, pivotally mounted on the flywheel (2), and a second part ( 33), radially external, fixed to the first portion (32) and on which are mounted the pendulum masses (36).
4. Dispositif d'embrayage (1 ) selon l'une des revendications 1 à 3, caractérisé en ce que l'organe de liaison (41 ) est formé par au moins une pièce distincte du support (32, 33) et fixée au support (32, 33).  4. clutch device (1) according to one of claims 1 to 3, characterized in that the connecting member (41) is formed by at least one separate part of the support (32, 33) and attached to the support (32, 33).
5. Dispositif d'embrayage (1 ) selon la revendication 4, caractérisé en ce que l'organe de liaison (41 ) comporte une tôle (42) s'étendant radialement entre le support (32, 33) et l'arbre de sortie (27).  5. clutch device (1) according to claim 4, characterized in that the connecting member (41) comprises a plate (42) extending radially between the support (32, 33) and the output shaft. (27).
6. Dispositif d'embrayage (1 ) selon l'une des revendications 1 à 4, caractérisé en ce que l'organe de liaison (41 ) comporte des cannelures (46) à sa périphérie radialement interne, coopérant avec des cannelures complémentaires de l'arbre de sortie (27). 6. Clutch device (1) according to one of claims 1 to 4, characterized in that the connecting member (41) comprises grooves (46) at its radially inner periphery, cooperating with complementary splines of the output shaft (27).
7. Dispositif d'embrayage (1 ) selon les revendications 5 et 6, caractérisé en ce que l'organe de liaison (41 ) comporte une bague (44) dont la périphérie radialement interne comporte les cannelures (46) coopérant avec les cannelures complémentaires de l'arbre de sortie (27), ladite bague (44) étant fixée en périphérie radialement interne de la tôle (42).  7. clutch device (1) according to claims 5 and 6, characterized in that the connecting member (41) comprises a ring (44) whose radially inner periphery comprises the grooves (46) cooperating with the complementary grooves of the output shaft (27), said ring (44) being fixed at the radially inner periphery of the sheet (42).
8. Dispositif d'embrayage (1 ) selon l'une des revendications 1 à 7, caractérisé en ce que la périphérie radialement interne de l'organe de liaison (41 ), couplée à l'arbre de sortie (27), est située axialement en regard de la partie (33) du support (32, 33) équipée des masses pendulaires (36).  8. clutch device (1) according to one of claims 1 to 7, characterized in that the radially inner periphery of the connecting member (41), coupled to the output shaft (27), is located axially facing the portion (33) of the support (32, 33) equipped with pendular masses (36).
9. Dispositif d'embrayage (1 ) selon l'une des revendications 1 à 8, caractérisé en ce que le volant (2) comporte une première partie (3), dite amont, destinée à être fixée à l'arbre d'entrée (8), autour de laquelle est monté le support (32, 33) équipé des masses pendulaires (36), et une seconde partie (4), dite aval, fixée à la première partie (3) et délimitant avec cette dernière une cavité annulaire dans laquelle sont logés, au moins en partie, le support (32, 33) et les masses pendulaires (36).  9. clutch device (1) according to one of claims 1 to 8, characterized in that the wheel (2) comprises a first portion (3), said upstream, intended to be fixed to the input shaft (8), around which is mounted the support (32, 33) equipped with pendular masses (36), and a second portion (4), said downstream, attached to the first portion (3) and delimiting with the latter a cavity annular in which are housed, at least in part, the support (32, 33) and the pendulum masses (36).
10. Dispositif d'embrayage (1 ) selon la revendication 9, caractérisé en ce que le mécanisme d'embrayage (19) comporte un plateau de pression (28) mobile par rapport à un plateau de réaction (4), lesdits plateaux de pression (28) et de réaction (4) étant aptes à serrer ou libérer un disque de friction (22) couplé en rotation au moyeu (23), le plateau de réaction étant formé par la seconde partie (4) du volant (2).  10. clutch device (1) according to claim 9, characterized in that the clutch mechanism (19) comprises a pressure plate (28) movable relative to a reaction plate (4), said pressure plates (28) and reaction (4) being able to clamp or release a friction disc (22) rotatably coupled to the hub (23), the reaction plate being formed by the second portion (4) of the flywheel (2).
1 1 . Dispositif d'embrayage (1 ) selon la revendication 10, caractérisé en ce que le disque de friction (22) est couplé au moyeu par l'intermédiaire de moyens d'amortissement (24) et/ou de moyens de préamortissement (25).  1 1. Clutch device (1) according to claim 10, characterized in that the friction disc (22) is coupled to the hub via damping means (24) and / or pre-damping means (25).
PCT/FR2014/051581 2013-06-25 2014-06-24 Clutch device WO2014207371A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112014003040.6T DE112014003040T5 (en) 2013-06-25 2014-06-24 coupling device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1356064A FR3007477B1 (en) 2013-06-25 2013-06-25 CLUTCH DEVICE, IN PARTICULAR FOR MOTOR VEHICLE
FR1356064 2013-06-25

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3039241B1 (en) * 2015-07-24 2022-10-21 Valeo Embrayages TRANSMISSION ASSEMBLY FOR MOTOR VEHICLE
FR3042241B1 (en) * 2015-10-09 2018-08-17 Valeo Embrayages CLUTCH DEVICE FOR A MOTOR VEHICLE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63246529A (en) * 1987-04-01 1988-10-13 Daikin Mfg Co Ltd Flywheel assembly
DE102006028552A1 (en) * 2005-10-29 2007-05-03 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Clutch device has clutch plate and pendulum mass mounting device of centrifugal force pendulum device enfolds several pendulum masses which are movably attached at pendulum mass mounting device
DE102009042825A1 (en) * 2008-10-30 2010-05-12 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Torque transmission device for use in drive train of motor vehicle, has torsional vibration damper with two damper elements, where centrifugal force pendulum is provided with carrier part

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63246529A (en) * 1987-04-01 1988-10-13 Daikin Mfg Co Ltd Flywheel assembly
DE102006028552A1 (en) * 2005-10-29 2007-05-03 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Clutch device has clutch plate and pendulum mass mounting device of centrifugal force pendulum device enfolds several pendulum masses which are movably attached at pendulum mass mounting device
DE102009042825A1 (en) * 2008-10-30 2010-05-12 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Torque transmission device for use in drive train of motor vehicle, has torsional vibration damper with two damper elements, where centrifugal force pendulum is provided with carrier part

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FR3007477B1 (en) 2015-06-19
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