WO2019002716A1 - Clutch disc with friction device - Google Patents

Clutch disc with friction device Download PDF

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Publication number
WO2019002716A1
WO2019002716A1 PCT/FR2018/051448 FR2018051448W WO2019002716A1 WO 2019002716 A1 WO2019002716 A1 WO 2019002716A1 FR 2018051448 W FR2018051448 W FR 2018051448W WO 2019002716 A1 WO2019002716 A1 WO 2019002716A1
Authority
WO
WIPO (PCT)
Prior art keywords
washer
friction
rotating element
load
elastic
Prior art date
Application number
PCT/FR2018/051448
Other languages
French (fr)
Inventor
Olivier Marechal
Dominique Dael
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 KR1020197038673A priority Critical patent/KR20200021949A/en
Priority to BR112019027326-3A priority patent/BR112019027326B1/en
Priority to CN201880044190.3A priority patent/CN110809678A/en
Publication of WO2019002716A1 publication Critical patent/WO2019002716A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/129—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by friction-damping means
    • F16F15/1292—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by friction-damping means characterised by arrangements for axially clamping or positioning or otherwise influencing the frictional plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/32—Belleville-type springs
    • F16F1/324—Belleville-type springs characterised by having tongues or arms directed in a generally radial direction, i.e. diaphragm-type springs

Definitions

  • the invention relates to the field of torque transmission in motorized devices and relates to clutches. It relates more particularly to a clutch disc.
  • Motor vehicles may be provided with a clutch disposed between the engine and the transmission.
  • This clutch typically comprises a clutch mechanism and a clutch disc which has a peripheral torque transmission member and a central torque transmission member.
  • the clutch When the clutch is in the engaged mode, the engine is connected to the transmission by the clutch disk.
  • the peripheral torque transmission member is then generally gripped by the clutch mechanism so as to be driven by the rotation of the motor, and the central torque transmission member is rotationally integral with an element of the transmission, such as the gearbox of a vehicle.
  • the clutch is controlled to its disengaged position, the clutch mechanism releases the clutch disk and the engine is decoupled from the transmission.
  • the clutch disk In addition to its function of coupling the motor and the transmission, the clutch disk generally performs additional functions related to filtering motor acyclisms and other torsional oscillations.
  • This filtering is typically carried out by one or more torsion dampers which are spring-damping assemblies working in torsion and allowing, during the transmission of the torque, a relative rotational movement of the peripheral member for transmitting torque with respect to the central organ of transmission of torque, and a damping of these acyclisms.
  • the relative rotation may be permitted by springs and the damping may be achieved by a friction device provided with friction washers loaded axially by spring washers, so as to dissipate by friction the energy accumulated in the springs.
  • the document FR2890713 describes a clutch disk including a torsion damper comprises elastic washers axial compression intended to solicit complementary friction surfaces, these spring washers comprising an annular mobile axial bearing portion extended radially by radial tabs of fixed axial support.
  • the radial tabs of two consecutive elastic washers are interposed with each other and each radial tab requires a stop in rotation.
  • the object of the invention is to improve the clutch disks of the prior art.
  • the invention is directed to a clutch disc for connecting an engine and a transmission, comprising a peripheral member for transmitting torque and a central member for transmitting torque rotatably mounted one to the other. relative to the other along an axis, and at least one torsion damping device interposed between the peripheral torque transmission member and the central torque transmission member, the torsion damping device comprising at least one spring arranged to deform when the peripheral torque transmitting member and the central torque transmitting member rotate relative to each other, an elastic spring washer and a friction washer coaxial with the central member torque transmission and integral in rotation with a first rotating element, the elastic load washer applying an axial load on the friction washer which is arranged against a second rotating member, relative rotation being allowed between said first rotating member and said second rotating member.
  • the spring load washer has an annular contact portion and at least two support legs which extend from the annular contact portion, the elastic load washer supported by its support legs on said first rotating element, and resting by its annular contact portion directly or indirectly on the friction washer.
  • the elastic spring washer has at least one passage opening formed in at least one of its legs. support, the friction washer having at least one coupling tongue passing through said at least one through hole.
  • the elastic spring washer and the friction washer can thus be mounted integral in rotation with the first rotating element compactly both radially and axially.
  • Compactness is a goal still sought in the arrangement of the many washers constituting a clutch disk and the invention allows this compactness in a simple manner and without harming the rigidity of the various washers.
  • the implementation of a wide support leg in which a closed orifice is made increases the stiffness of an elastic spring washer, in comparison with an elastic spring washer in which the wide support leg breakthrough is replaced by two legs separated by a smaller width.
  • the diameter of the friction washer can be reduced without impairing its function, so as to simply cooperate with the annular contact portion of the load spring washer, and its rotation locking means can be simplified in the form of one or more coupling tabs.
  • the locking means in rotation of the spring washer and / or the friction washer can thus be made less bulky thanks to the coupling tongue or tabs passing through the orifices of passage.
  • the clutch disc may comprise the following additional features, alone or in combination:
  • said at least one passage orifice is a closed orifice.
  • the elastic spring washer comprises four support lugs distributed in two substantially perpendicular directions;
  • the elastic spring washer has two through holes in each support lug; -
  • the friction washer has an annular friction portion and four pairs of coupling tongues extending substantially perpendicular to the plane of the annular friction portion, towards the first rotating element;
  • the elastic spring washer has a rotational stop tooth on at least one support lug, the rotational stop tooth being inserted into a rotational stop orifice formed in the first rotating element; in other words, the elastic spring washer can be mounted to rotate with the first rotating element via the tooth and the stop orifice;
  • the rotational stop orifice is a rotational stop groove
  • the at least one coupling tongue is fitted into the at least one through hole so that the friction washer is locked in rotation with the elastic load washer in the two directions of rotation, that is, the friction washer can be integral in rotation on the spring load washer;
  • the at least one coupling tongue is further inserted into at least one end orifice formed in the first rotating element, so that the first rotating element does not obstruct the axial displacement of the elastic spring washer;
  • the at least one coupling tongue is fitted into the at least one end orifice so that the friction washer is locked in rotation with the first element rotating in both directions of rotation; in other words, the friction washer can be rotatably mounted on the first rotating element;
  • the clutch disc comprises a web connected to one of the central torque transmission member and the peripheral torque transmission member, and two guide washers connected to the other one of the central transmission member. of torque and the peripheral member for transmitting torque and arranged on either side of the sail, as well as springs interposed between the sail and the guide washers, the first rotating element consisting of one of the guide washers or the sail;
  • the clutch disc comprises a web connected to one of the central torque transmission member and the peripheral torque transmission member, and two guide washers connected to the other one of the central transmission member. torque and the peripheral member for transmitting torque and disposed on both sides of the web, as well as springs interposed between the web and the guide washers, the first rotating element consisting of a guide washers;
  • the clutch disc comprises a sail connected to the central torque transmission member, and two guide washers connected to the peripheral torque transmission member and arranged on either side of the sail, as well as springs; interposed between the web and the guide washers, the first rotating element consisting of one of the guide washers;
  • the supporting lugs (19) of the elastic load washer (15) have external radial ends which are arranged against one of the guide washers, circumferentially between two consecutive springs;
  • the second rotating element is an element connected to the veil
  • the second rotating element is a pre-damper cassette attached to the web;
  • the elastic spring washer is of substantially frustoconical shape, the annular contact portion being on the side of the tip of the cone and the support lugs being on the side of the base of the cone;
  • the support tabs extend radially outwardly of the elastic load washer; the at least one coupling tongue is arranged on the outer periphery of the friction washer.
  • the at least one coupling tongue extends radially outwardly of the friction washer
  • the friction washer is mounted to rotate with the first rotating element and the spring load washer is mounted to rotate on the friction washer so that the spring load washer is mounted integral in rotation with the first rotating element only through the friction washer.
  • At least one of the coupling tongues comprises a boss co-operating with a border of a passage orifice and forming an axial retaining element axially retaining the friction washer on the elastic load washer, thus the elastic washer of load and the friction washer can form a pre-assembled subassembly;
  • the boss can be obtained by means of a method of deforming the coupling tongues, for example by means of a blasting method;
  • the coupling tongues may also extend in an axial direction to promote axial retention between the boss and the associated through hole.
  • FIG. 4 is an exploded view showing a load elastic washer and a friction washer of the clutch of FIG. 1;
  • FIG. 5 shows in perspective the web of Figure 2 associated with the washers of Figure 4;
  • Figure 6 shows the assembly of Figure 5 associated with the guide ring of Figure 3;
  • Figure 8 is a detail view of Figure 7;
  • Figure 9 is a detail view of Figure 3; - Figure 10 is similar to Figure 9, for an alternative embodiment;
  • FIG. 11 is an alternative embodiment including an axial retaining element between the spring load washer and the friction washer.
  • the terms "external” and “internal” as well as the “axial” and “radial” orientations will be used to designate, according to the definitions given in the description, elements of the torsion damper.
  • the axis (X) of rotation (represented in FIG. 1) determines the “axial” orientation.
  • the "radial” orientation is directed orthogonally to the axis (X).
  • the “circumferential” orientation is directed orthogonally to the axis (X) of rotation and orthogonal to the radial direction.
  • FIG. 1 shows in perspective a clutch disc 1 for the present example, a motor vehicle. Such a clutch disk is conventionally provided on its outer periphery with a friction disc which has not been shown.
  • the clutch disc 1 is intended to connect the engine and the transmission of a motor vehicle. It comprises a peripheral member for transmitting torque, constituted here by the friction disk (not shown), and a central torque transmission member, constituted in this case by a hub 3.
  • the friction disk (not shown) is integral with a set rigid consisting of two side flanges called “first guide ring 4" and “second guide ring 5", this assembly being fixed by rivets 6.
  • This clutch disc 1 is conventionally mounted so that the not shown friction disc, fixed on the periphery of one of the guide washers 4, 5, can be gripped by a clutch mechanism connected to the flywheel of the motor, and that the hub 3 is connected in rotation to an input shaft of the vehicle gearbox, via an internal toothing 7 of the hub 3.
  • the clutch disc 1 is provided with a torsion damping device comprising a set of springs 8 interposed between the guide washers 4, 5 and a disc, called “veil 9" which is rotated with the hub 3.
  • Figures 2 and 3 respectively show the web 9 and the first guide ring 4 as they would occur if the clutch plate 1 was disassembled.
  • the web 9 of FIG. 2 comprises housings 10 for the springs 8. It has a radially internal contour 11 provided with teeth for its connection in rotation with the hub 3, this connection being able to be direct, by mechanical contact, or indirectly, for example by an additional torsion damper called pre-damper.
  • a cassette 16 is fixed on the web 9 and may contain this possible pre-damper.
  • the cassette 16 is here made of plastic and has a friction face 12 facing towards the first guide washer 4.
  • the first guide washer 4 has housings 13 for the springs 8, fixing holes 2 for the rivets 6, as well as a friction washer 14 and an elastic load washer 15 superimposed so that the friction washer 14 come into contact with the friction face 12 of the cassette 16, when the clutch disc 1 is assembled.
  • the resilient spring washer 15 then exerts an axial load between the friction washer 14 and the first guide washer 4 so that the friction washer 14 is urged against the friction face 12 of the cassette 16.
  • the friction washer 14 and the resilient spring washer 15 are integral in rotation with the first guide ring 4.
  • the inner contour 17 of the first guide ring 4 surrounds the hub 3, but the latter can rotate freely relative to the two guide rings 4, 5 .
  • FIG. 4 is a perspective view of the elastic spring washer 15 surmounted by the friction washer 14.
  • the resilient spring washer 15 has an annular contact portion 18 and, in the present example, four support legs 19 which extend from the annular contact portion 18.
  • the annular contact portion 18 is substantially in the form of a disc intended to exert pressure on the friction washer 14.
  • the four support lugs 19 are regularly distributed over the outer contour of the annular contact portion 18, in two substantially perpendicular directions.
  • the elastic spring washer 15 is made of a material chosen for its elastic properties, for example a steel, and has for example a substantially frustoconical shape to be able to fulfill its function of axial spring.
  • the annular contact portion 18 is on the side of the tip of the cone while the support legs 19 are on the side of the base of the cone, which implies that the support legs 19 extend radially towards the cone. outside the load spring washer 15.
  • the resilient spring washer 15 is supported by its support lugs 19 on a first rotating element of the clutch disc constituted by the first guide washer 4, and is supported by its annular contact portion 18 on the friction washer 14.
  • the latter relies on a second rotating element constituted by the cassette 16 attached to the web 9.
  • each support lug 19 of the resilient spring washer 15 has a pair of through holes 20 and a rotational stop tooth 22 intended to cooperate with the first guide ring 4 to make the resilient spring washer 15 integral in rotation with the first guide ring 4.
  • the friction washer 14, shown in FIG. 4, comprises an annular friction portion 21 having substantially a disc shape and intended to come into contact with the friction face 12 of the cassette 16.
  • the friction washer 14 is here metallic, which involves a metal friction on advantageous plastic.
  • the friction washer 14 further comprises four pairs of coupling tongues 23, each extending substantially perpendicular to the plane of the annular friction portion 21.
  • FIG. 5 shows the web 9, the friction washer 14 and the spring washer 15 as they are inside the clutch disk 1 when mounted.
  • FIG. 5 does not show the first guide washer 4 in order to show the cooperation of the friction washer 14, the elastic load washer 15 and the veil 9.
  • the resilient spring washer 15 then presses the friction washer 14 against the cassette 16, relying, thanks to its support legs 19, against the first guide ring 4.
  • the coupling tongues 23 of the friction washer 14 through the passage orifices 20 of the elastic load washer 15 as shown in FIG. 5.
  • the friction washer 14 coupled to the spring washer 15 is shown in perspective in FIG. 7, the coupling tongues 23 passing through the through holes 20.
  • FIG. 8 is a detailed view of the assembly of FIG. 7, and shows, seen from below, one of the support lugs 19 of the elastic load washer 15 traversed by the coupling tongues 23.
  • the tongues of FIG. coupling 23 also pass through end orifices 24 formed in the first guide ring 4.
  • FIG. 6 is identical to FIG. 5, except that the first guide ring 4 has in this case been shown and shows the tabs coupling 23 inserted into the end holes 24.
  • the friction washer 14, the resilient spring washer 15, and the first guide washer 4 are integral in rotation in several variants.
  • the elastic spring washer 15 is mounted to rotate with the first guide ring 4 by virtue of each rotation stop tooth 22 which is inserted into a stop groove in rotation in the first guide ring 4.
  • FIG. 3 shows the four rotational stop teeth 22 inserted in the four rotational locking grooves 25.
  • Each support lug 19 of the spring load washer 15 is disposed against the first guide ring 4, with their stop tooth arranged circumferentially between two consecutive springs.
  • the friction washer 14 is mounted to rotate with the resilient spring washer 15 by virtue of the coupling tongues 23 which are adjusted in width in the passage orifices 20 of the elastic load washer 15.
  • the through-holes 20 have a substantially rectangular contour to provide plane-to-plane contact with the slices of the coupling tongues 23 which are fitted, or even slightly tightened, in the through holes 20 in order to guarantee the rotational drive. one washer by the other in both directions of rotation.
  • the end ports 24 are wider than the coupling tongues 23 so that the coupling tongues 23 can freely pass through the end holes 24 without touching the edges.
  • the width here extends in the circumferential direction.
  • the end holes 24 thus do not interfere with the coupling tongues 23, they do not contribute to make the two washers 14, 15 integral in rotation.
  • the end openings 24 allow only the passage of the coupling tongues 23 to pass through. that the latter do not abut axially on the first guide ring 4 when the resilient spring washer 15 is pressed against the first guide ring 4.
  • the coupling tongues 23 of the friction ring 14 can be advantageously shortened axially because they are coupled in rotation only to the load washer 15.
  • the friction washer 14 is rotatably mounted on the first guide ring 4 by virtue of the coupling tongues 23 which are adjusted in width in the end orifices 24 of the first guide ring 4.
  • the end ports 24 have a substantially rectangular contour to provide plane-to-plane contact with the wafers of the coupling tongues 23 which are fitted or even slightly tightened in these end ports 24 to ensure rotational coupling of the friction washer 23 and the first guide ring 4, in both directions of rotation.
  • the passage orifices 20 are this time of greater width than the coupling tongues 23 so that the coupling tongues 23 can freely pass through the through holes 20 without touching the edges.
  • the passage holes 20 thus do not interfere with the coupling tongues 23 and only serve to allow the passage of the coupling tongue 23 through the support lug 19.
  • Support tabs 19 of load spring washer 15 have no rotational stop teeth 22.
  • Through holes 20, as well as end ports 24, are sized in width to be fitted to the coupling tabs. 23.
  • the coupling tongues 23 are thus fitted, or even slightly tightened, in the through-holes 20 and also in the end orifices 24 so that the coupling tongues 23 provide direct coupling in both directions of rotation. , the friction washer 14 and the elastic load washer 15 with the first guide ring 4.
  • FIG. 11 shows an alternative embodiment of the coupling tongues 23.
  • They comprise a boss 42 cooperating with a border of a passage orifice 20 and thus forming an axial retaining element axially retaining the friction washer 14 on the Elastic load washer 15.
  • the boss can be obtained by means of a method of deforming the coupling tongues, for example by means of a blasting process.
  • the coupling tabs extend in an axial direction to promote axial retention between the boss 42 and the associated through port.
  • annular contact portion 18 may be on the side of the base of the cone that constitutes the spring washer 15 load, while its support legs 19 are on the side of the tip of the cone, which would imply that the legs of 19 in this case, the friction washer 14 could be adapted to such a resilient washer 15, having radially extending coupling tongues 23 inward and cooperating with the support lugs 19 through the passage orifices 20.
  • the torque formed by the friction washer 14 and the load elastic washer 15 may be axially located elsewhere in the clutch disk, which implies that the first and second rotary elements of the clutch disk may be other elements than, respectively, the first guide ring 4 (for example, the second guide ring 5 or another element), and the cassette 16 (for example, the veil 9 or another element), it is sufficient that one relative rotation is allowed, thanks to the torsion damper, between the first and second rotating elements.
  • the invention can be applied to any of the torsion dampers.

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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

A clutch disc (1) comprising a peripheral torque transmission member, a central torque transmission member (3), and at least one torsion damping device that comprises at least a load spring washer (15) and a friction washer (14). The load spring washer (15) comprises an annular contact portion (18) and at least two support legs (19) which extend from the annular contact portion (18), the load spring washer (15) being supported by its support legs (19) on a first rotating element (4), and being supported by its angular contact portion on the friction washer (14). The load spring washer (15) comprises at least one through-opening (20) arranged in at least one of its support legs (19) and the friction washer (14) comprises at least one coupling tab (23) passing through said at least one through-opening (20).

Description

DISQUE D'EMBRAYAGE AVEC DISPOSITIF DE FROTTEMENT  CLUTCH DISC WITH FRICTION DEVICE
L'invention a trait au domaine de la transmission de couple dans les dispositifs motorisés et concerne les embrayages. Elle concerne plus particulièrement un disque d'embrayage. The invention relates to the field of torque transmission in motorized devices and relates to clutches. It relates more particularly to a clutch disc.
Les véhicules motorisés, par exemple, peuvent être pourvus d'un embrayage disposé entre le moteur et la transmission. Cet embrayage comporte typiquement un mécanisme d'embrayage et un disque d'embrayage qui présente un organe périphérique de transmission de couple et un organe central de transmission de couple. Lorsque l'embrayage est en mode embrayé, le moteur est relié à la transmission par le disque d'embrayage. L'organe périphérique de transmission de couple est alors généralement pincé par le mécanisme d'embrayage de sorte à être entraîné par la rotation du moteur, et l'organe central de transmission de couple est solidaire en rotation d'un élément de la transmission, tel que la boîte de vitesse d'un véhicule. Lorsque l'embrayage est commandé vers sa positon débrayée, le mécanisme d'embrayage libère le disque d'embrayage et le moteur est découplé de la transmission. Motor vehicles, for example, may be provided with a clutch disposed between the engine and the transmission. This clutch typically comprises a clutch mechanism and a clutch disc which has a peripheral torque transmission member and a central torque transmission member. When the clutch is in the engaged mode, the engine is connected to the transmission by the clutch disk. The peripheral torque transmission member is then generally gripped by the clutch mechanism so as to be driven by the rotation of the motor, and the central torque transmission member is rotationally integral with an element of the transmission, such as the gearbox of a vehicle. When the clutch is controlled to its disengaged position, the clutch mechanism releases the clutch disk and the engine is decoupled from the transmission.
En plus de sa fonction d'accouplement du moteur et de la transmission, le disque d'embrayage remplit généralement des fonctions supplémentaires liées au filtrage des acyclismes du moteur et autres oscillations de torsion. Ce filtrage est typiquement réalisé par un ou plusieurs amortisseurs de torsion qui sont des combinés ressorts-amortisseurs travaillant en torsion et permettant, au cours de la transmission du couple, un mouvement de rotation relative de l'organe périphérique de transmission de couple par rapport à l'organe central de transmission de couple, et un amortissement de ces acyclismes. La rotation relative peut être permise par des ressorts et l'amortissement peut être réalisé par un dispositif de frottement doté de rondelles de frottement mises en charge axiale par des rondelles élastiques, de sorte à dissiper par frottement l'énergie accumulée dans les ressorts. In addition to its function of coupling the motor and the transmission, the clutch disk generally performs additional functions related to filtering motor acyclisms and other torsional oscillations. This filtering is typically carried out by one or more torsion dampers which are spring-damping assemblies working in torsion and allowing, during the transmission of the torque, a relative rotational movement of the peripheral member for transmitting torque with respect to the central organ of transmission of torque, and a damping of these acyclisms. The relative rotation may be permitted by springs and the damping may be achieved by a friction device provided with friction washers loaded axially by spring washers, so as to dissipate by friction the energy accumulated in the springs.
Lors de la conception d'un dispositif de frottement de disque d'embrayage, une attention particulière est portée : - sur l'immobilisation en rotation des rondelles les unes par rapport aux autres et par rapports aux différents éléments tournants du disque d'embrayage, de sorte à maîtriser l'emplacement des zones de frottement ; When designing a clutch disc friction device, special attention is paid to: - On immobilization in rotation of the washers relative to each other and with respect to the different rotating elements of the clutch disk, so as to control the location of the friction zones;
- sur la charge exercée par les rondelles élastiques ; - sur l'encombrement, notamment axial. - the load exerted by the elastic washers; - on the bulk, especially axial.
Le document FR2890713 décrit un disque d'embrayage dont un amortisseur de torsion comporte des rondelles élastiques de compression axiale destinées à solliciter des surfaces de frottement complémentaires, ces rondelles élastiques comprenant une partie annulaire d'appui axial mobile prolongée radialement par des pattes radiales d'appui axial fixe. Les pattes radiales de deux rondelles élastiques consécutives sont intercalées les unes avec les autres et chaque patte radiale nécessite un arrêt en rotation. The document FR2890713 describes a clutch disk including a torsion damper comprises elastic washers axial compression intended to solicit complementary friction surfaces, these spring washers comprising an annular mobile axial bearing portion extended radially by radial tabs of fixed axial support. The radial tabs of two consecutive elastic washers are interposed with each other and each radial tab requires a stop in rotation.
L'invention a pour but d'améliorer les disques d'embrayage de l'art antérieur. The object of the invention is to improve the clutch disks of the prior art.
A cet effet, l'invention vise un disque d'embrayage pour la liaison d'un moteur et d'une transmission, comportant un organe périphérique de transmission de couple et un organe central de transmission de couple montés mobiles en rotation l'un par rapport à l'autre selon un axe, et au moins un dispositif d'amortissement de torsion interposé entre l'organe périphérique de transmission de couple et l'organe central de transmission de couple, le dispositif d'amortissement de torsion comportant au moins un ressort agencé pour se déformer lorsque l'organe périphérique de transmission de couple et l'organe central de transmission de couple tournent l'un par rapport à l'autre, une rondelle élastique de charge et une rondelle de frottement coaxiales avec l'organe central de transmission de couple et solidaires en rotation d'un premier élément tournant, la rondelle élastique de charge appliquant une charge axiale sur la rondelle de frottement qui est disposée contre un deuxième élément tournant, une rotation relative étant permise entre ledit premier élément tournant et ledit deuxième élément tournant. La rondelle élastique de charge comporte une portion annulaire de contact et au moins deux pattes de support qui s'étendent à partir de la portion annulaire de contact, la rondelle élastique de charge s'appuyant par ses pattes de support sur ledit premier élément tournant, et s'appuyant par sa portion annulaire de contact directement ou indirectement sur la rondelle de frottement. De plus, la rondelle élastique de charge comporte au moins un orifice de passage ménagé dans au moins une de ses pattes de support, la rondelle de frottement comportant au moins une languette de couplage traversant ledit au moins un orifice de passage. For this purpose, the invention is directed to a clutch disc for connecting an engine and a transmission, comprising a peripheral member for transmitting torque and a central member for transmitting torque rotatably mounted one to the other. relative to the other along an axis, and at least one torsion damping device interposed between the peripheral torque transmission member and the central torque transmission member, the torsion damping device comprising at least one spring arranged to deform when the peripheral torque transmitting member and the central torque transmitting member rotate relative to each other, an elastic spring washer and a friction washer coaxial with the central member torque transmission and integral in rotation with a first rotating element, the elastic load washer applying an axial load on the friction washer which is arranged against a second rotating member, relative rotation being allowed between said first rotating member and said second rotating member. The spring load washer has an annular contact portion and at least two support legs which extend from the annular contact portion, the elastic load washer supported by its support legs on said first rotating element, and resting by its annular contact portion directly or indirectly on the friction washer. In addition, the elastic spring washer has at least one passage opening formed in at least one of its legs. support, the friction washer having at least one coupling tongue passing through said at least one through hole.
La rondelle élastique de charge et la rondelle de frottement peuvent ainsi être montées solidaires en rotation du premier élément tournant de manière compacte aussi bien radialement que axialement. La compacité est un but toujours recherché dans l'agencement des nombreuses rondelles constituant un disque d'embrayage et l'invention permet cette compacité de manière simple et sans nuire à la rigidité des différentes rondelles. The elastic spring washer and the friction washer can thus be mounted integral in rotation with the first rotating element compactly both radially and axially. Compactness is a goal still sought in the arrangement of the many washers constituting a clutch disk and the invention allows this compactness in a simple manner and without harming the rigidity of the various washers.
De plus, la mise en œuvre d'une patte de support large dans laquelle un orifice fermé est réalisé permet d'augmenter la raideur d'une rondelle élastique de charge, en comparaison avec une rondelle élastique de charge dans laquelle la patte de support large percée est remplacée par deux pattes distantes de largeur moins importante. Autrement dit, il est préférable, pour augmenter la raideur de la rondelle élastique de charge par rapport à une rondelle élastique de charge de l'état de la technique, de diviser environ par deux le nombre de pattes de support, et de multiplier par deux leur largeur et de ménager un orifice fermé sur ces pattes. In addition, the implementation of a wide support leg in which a closed orifice is made increases the stiffness of an elastic spring washer, in comparison with an elastic spring washer in which the wide support leg breakthrough is replaced by two legs separated by a smaller width. In other words, it is preferable, in order to increase the stiffness of the spring load washer with respect to a load elastic washer of the state of the art, to divide the number of support legs by about two by two, and to multiply by two. their width and to provide a closed orifice on these legs.
De plus, il est possible de pré-assembler la rondelle élastique de charge et la rondelle de frottement. In addition, it is possible to pre-assemble the spring washer and the friction washer.
Par ailleurs, le diamètre de la rondelle de frottement peut être réduit sans nuire à sa fonction, de sorte à coopérer simplement avec la portion annulaire de contact de la rondelle élastique de charge, et ses moyens de blocage en rotation peuvent être simplifiés sous forme d'une ou plusieurs languettes de couplage. Moreover, the diameter of the friction washer can be reduced without impairing its function, so as to simply cooperate with the annular contact portion of the load spring washer, and its rotation locking means can be simplified in the form of one or more coupling tabs.
Les moyens de blocage en rotation de la rondelle élastique de charge et/ou de la rondelle de frottement peuvent ainsi être rendus moins encombrants grâce à la ou les languettes de couplage traversant le ou les orifices de passage. The locking means in rotation of the spring washer and / or the friction washer can thus be made less bulky thanks to the coupling tongue or tabs passing through the orifices of passage.
Le disque d'embrayage peut comporter les caractéristiques additionnelles suivantes, seules ou en combinaison : The clutch disc may comprise the following additional features, alone or in combination:
- ledit au moins un orifice de passage est un orifice fermé. Autrement dit, il ne s'agit pas d'une échancrure ; - la rondelle élastique de charge comporte quatre pattes de support réparties selon deux directions sensiblement perpendiculaires ; said at least one passage orifice is a closed orifice. In other words, it is not an indentation; the elastic spring washer comprises four support lugs distributed in two substantially perpendicular directions;
- la rondelle élastique de charge comporte deux orifices de passage dans chaque patte de support ; - la rondelle de frottement comporte une portion annulaire de frottement et quatre paires de languettes de couplage s'étendant sensiblement perpendiculairement au plan de la portion annulaire de frottement, en direction du premier élément tournant ; the elastic spring washer has two through holes in each support lug; - The friction washer has an annular friction portion and four pairs of coupling tongues extending substantially perpendicular to the plane of the annular friction portion, towards the first rotating element;
- la rondelle élastique de charge comporte une dent d'arrêt en rotation sur au moins une patte de support, la dent d'arrêt en rotation étant insérée dans un orifice d'arrêt en rotation pratiqué dans le premier élément tournant ; autrement dit, la rondelle élastique de charge peut être montée solidaire en rotation sur le premier élément tournant via la dent et l'orifice d'arrêt ; the elastic spring washer has a rotational stop tooth on at least one support lug, the rotational stop tooth being inserted into a rotational stop orifice formed in the first rotating element; in other words, the elastic spring washer can be mounted to rotate with the first rotating element via the tooth and the stop orifice;
- l'orifice d'arrêt en rotation est une rainure d'arrêt en rotation ; the rotational stop orifice is a rotational stop groove;
- la au moins une languette de couplage est ajustée dans le au moins un orifice de passage de sorte que la rondelle de frottement soit bloquée en rotation avec la rondelle élastique de charge selon les deux sens de rotation, autrement dit, la rondelle de frottement peut être montée solidaire en rotation sur la rondelle élastique de charge ; the at least one coupling tongue is fitted into the at least one through hole so that the friction washer is locked in rotation with the elastic load washer in the two directions of rotation, that is, the friction washer can be integral in rotation on the spring load washer;
- la au moins une languette de couplage est de plus insérée dans au moins un orifice d'extrémité pratiqué dans le premier élément tournant, ainsi le premier élément tournant ne fait pas obstacle au déplacement axial de la rondelle élastique de charge ; the at least one coupling tongue is further inserted into at least one end orifice formed in the first rotating element, so that the first rotating element does not obstruct the axial displacement of the elastic spring washer;
- la au moins une languette de couplage est ajustée dans le au moins un orifice d'extrémité de sorte que la rondelle de frottement soit bloquée en rotation avec le premier élément tournant selon les deux sens de rotation ; autrement dit, la rondelle de frottement peut être montée solidaire en rotation sur le premier élément tournant ; the at least one coupling tongue is fitted into the at least one end orifice so that the friction washer is locked in rotation with the first element rotating in both directions of rotation; in other words, the friction washer can be rotatably mounted on the first rotating element;
- le disque d'embrayage comporte un voile relié à l'un parmi l'organe central de transmission de couple et l'organe périphérique de transmission de couple, et deux rondelles de guidage reliées à l'autre parmi l'organe central de transmission de couple et l'organe périphérique de transmission de couple et disposées de part et d'autre du voile, ainsi que des ressorts interposés entre le voile et les rondelles de guidage, le premier élément tournant étant constitué d'une des rondelles de guidage ou le voile ; the clutch disc comprises a web connected to one of the central torque transmission member and the peripheral torque transmission member, and two guide washers connected to the other one of the central transmission member. of torque and the peripheral member for transmitting torque and arranged on either side of the sail, as well as springs interposed between the sail and the guide washers, the first rotating element consisting of one of the guide washers or the sail;
- le disque d'embrayage comporte un voile relié à l'un parmi l'organe central de transmission de couple et l'organe périphérique de transmission de couple, et deux rondelles de guidage reliées à l'autre parmi l'organe central de transmission de couple et l'organe périphérique de transmission de couple et disposées de part et d'autre du voile, ainsi que des ressorts interposés entre le voile et les rondelles de guidage, le premier élément tournant étant constitué d'une des rondelles de guidage ; the clutch disc comprises a web connected to one of the central torque transmission member and the peripheral torque transmission member, and two guide washers connected to the other one of the central transmission member. torque and the peripheral member for transmitting torque and disposed on both sides of the web, as well as springs interposed between the web and the guide washers, the first rotating element consisting of a guide washers;
- le disque d'embrayage comporte un voile relié à l'organe central de transmission de couple, et deux rondelles de guidage reliées à l'organe périphérique de transmission de couple et disposées de part et d'autre du voile, ainsi que des ressorts interposés entre le voile et les rondelles de guidage, le premier élément tournant étant constitué d'une des rondelles de guidage ; the clutch disc comprises a sail connected to the central torque transmission member, and two guide washers connected to the peripheral torque transmission member and arranged on either side of the sail, as well as springs; interposed between the web and the guide washers, the first rotating element consisting of one of the guide washers;
- les pattes de support (19) de la rondelle élastique de charge (15) ont des extrémités radiales externes qui sont disposées contre l'une des rondelles de guidage, circonférenciellement entre deux ressorts consécutifs ; the supporting lugs (19) of the elastic load washer (15) have external radial ends which are arranged against one of the guide washers, circumferentially between two consecutive springs;
- le deuxième élément tournant est un élément lié au voile ; the second rotating element is an element connected to the veil;
- le deuxième élément tournant est une cassette de pré-amortisseur fixée au voile ; - la rondelle élastique de charge est de forme sensiblement tronconique, la portion annulaire de contact étant du côté de la pointe du cône et les pattes de support étant du côté de la base du cône ; the second rotating element is a pre-damper cassette attached to the web; the elastic spring washer is of substantially frustoconical shape, the annular contact portion being on the side of the tip of the cone and the support lugs being on the side of the base of the cone;
- les pattes de support s'étendent radialement vers l'extérieur de la rondelle élastique de charge ; - la au moins une languette de couplage est agencée sur la périphérie extérieure de la rondelle de frottement. the support tabs extend radially outwardly of the elastic load washer; the at least one coupling tongue is arranged on the outer periphery of the friction washer.
- la au moins une languette de couplage s'étend radialement vers l'extérieur de la rondelle de frottement ; the at least one coupling tongue extends radially outwardly of the friction washer;
- la rondelle de frottement est montée solidaire en rotation sur le premier élément tournant et la rondelle élastique de charge est montée solidaire en rotation sur la rondelle de frottement de sorte que la rondelle élastique de charge soit montée solidaire en rotation du premier élément tournant uniquement par l'intermédiaire de la rondelle de frottement. the friction washer is mounted to rotate with the first rotating element and the spring load washer is mounted to rotate on the friction washer so that the spring load washer is mounted integral in rotation with the first rotating element only through the friction washer.
- au moins l'une des languettes de couplage comporte un bossage coopérant avec une bordure d'un orifice de passage et formant un élément de retenue axiale retenant axialement la rondelle de frottement sur la rondelle élastique de charge, ainsi la rondelle élastique de charge et la rondelle de frottement peuvent former un sous ensemble pré assemblé ; at least one of the coupling tongues comprises a boss co-operating with a border of a passage orifice and forming an axial retaining element axially retaining the friction washer on the elastic load washer, thus the elastic washer of load and the friction washer can form a pre-assembled subassembly;
- le bossage peut être obtenu au moyen d'un procédé de déformation des languettes de couplage, par exemple au moyen d'un procédé de billage ; the boss can be obtained by means of a method of deforming the coupling tongues, for example by means of a blasting method;
- les languettes de couplage peuvent s'étendre également dans une direction axiale pour favoriser la retenue axiale entre le bossage et l'orifice de passage associé. - The coupling tongues may also extend in an axial direction to promote axial retention between the boss and the associated through hole.
Un exemple préféré de réalisation de l'invention va maintenant être décrit en références aux dessins annexés dans lesquels : - la figure 1 représente en perspective un disque d'embrayage selon l'invention ; A preferred embodiment of the invention will now be described with reference to the accompanying drawings in which: - Figure 1 shows in perspective a clutch disc according to the invention;
- la figure 2 représente le voile du disque d'embrayage de la figure 1 ; - Figure 2 shows the veil of the clutch plate of Figure 1;
- la figure 3 représente une rondelle de guidage du disque d'embrayage de la figure 1 ; - la figure 4 est une vue éclatée montrant une rondelle élastique de charge et une rondelle de frottement de l'embrayage de la figure 1 ; - Figure 3 shows a guide ring of the clutch plate of Figure 1; FIG. 4 is an exploded view showing a load elastic washer and a friction washer of the clutch of FIG. 1;
- la figure 5 représente en perspective le voile de la figure 2 associé aux rondelles de la figure 4 ; - Figure 5 shows in perspective the web of Figure 2 associated with the washers of Figure 4;
- la figure 6 représente l'ensemble de la figure 5 associé à la rondelle de guidage de la figure 3 ; - Figure 6 shows the assembly of Figure 5 associated with the guide ring of Figure 3;
- la figure 7 représente les deux rondelles de la figure 4 assemblées ; - Figure 7 shows the two washers of Figure 4 assembled;
- la figure 8 est une vue de détail de la figure 7 ; Figure 8 is a detail view of Figure 7;
- la figure 9 est une vue de détail de la figure 3 ; - la figure 10 est similaire à la figure 9, pour une variante de réalisation ; Figure 9 is a detail view of Figure 3; - Figure 10 is similar to Figure 9, for an alternative embodiment;
- la figure 11 est une variante de réalisation incluant un élément de retenue axiale entre la rondelle élastique de charge et la rondelle de frottement. - Figure 11 is an alternative embodiment including an axial retaining element between the spring load washer and the friction washer.
Dans la description et les revendications, on utilisera, les termes "externe" et "interne" ainsi que les orientations "axiale" et "radiale" pour désigner, selon les définitions données dans la description, des éléments de l'amortisseur de torsion. L'axe (X) de rotation (représenté figure 1 ) détermine l'orientation "axiale". L'orientation "radiale" est dirigée orthogonalement à l'axe (X). L'orientation "circonférentielle" est dirigée orthogonalement à l'axe (X) de rotation et orthogonalement à la direction radiale. Les termes "externe" et "interne" sont utilisés pour définir la position relative d'un composant par rapport à un autre, par référence à l'axe (X) de rotation, un composant proche dudit axe est ainsi qualifié d'interne par opposition à un composant externe situé radialement en périphérie. Par ailleurs, les angles et secteurs angulaires exprimés sont définis en relation avec l'axe de rotation (X). La figure 1 représente en perspective un disque d'embrayage 1 destiné, dans le présent exemple, à un véhicule automobile. Un tel disque d'embrayage est classiquement muni sur son pourtour externe d'un disque de friction qui n'a pas été représenté.  In the description and the claims, the terms "external" and "internal" as well as the "axial" and "radial" orientations will be used to designate, according to the definitions given in the description, elements of the torsion damper. The axis (X) of rotation (represented in FIG. 1) determines the "axial" orientation. The "radial" orientation is directed orthogonally to the axis (X). The "circumferential" orientation is directed orthogonally to the axis (X) of rotation and orthogonal to the radial direction. The terms "external" and "internal" are used to define the relative position of one component relative to another, with reference to the axis (X) of rotation, a component close to said axis is thus described as internal by opposition to an external component located radially periphery. Moreover, the angles and angular sectors expressed are defined in relation to the axis of rotation (X). Figure 1 shows in perspective a clutch disc 1 for the present example, a motor vehicle. Such a clutch disk is conventionally provided on its outer periphery with a friction disc which has not been shown.
Le disque d'embrayage 1 est prévu pour relier le moteur et la transmission d'un véhicule automobile. Il comporte un organe périphérique de transmission de couple, constitué ici du disque de friction non représenté, ainsi qu'un organe central de transmission de couple, constitué ici d'un moyeu 3. Le disque de friction non représenté est solidaire d'un ensemble rigide constitué de deux flasques latéraux dénommés « première rondelle de guidage 4 » et « deuxième rondelle de guidage 5 », cet ensemble étant fixé par des rivets 6. The clutch disc 1 is intended to connect the engine and the transmission of a motor vehicle. It comprises a peripheral member for transmitting torque, constituted here by the friction disk (not shown), and a central torque transmission member, constituted in this case by a hub 3. The friction disk (not shown) is integral with a set rigid consisting of two side flanges called "first guide ring 4" and "second guide ring 5", this assembly being fixed by rivets 6.
Ce disque d'embrayage 1 est classiquement monté de telle sorte que le disque de friction non représenté, fixé sur le pourtour d'une des rondelles de guidage 4, 5, puisse être pincé par un mécanisme d'embrayage relié au volant-moteur du moteur, et que le moyeu 3 soit relié en rotation à un arbre d'entrée de la boîte de vitesses du véhicule, par l'intermédiaire d'une denture interne 7 du moyeu 3. Entre son organe périphérique de transmission de couple et son organe central de transmission de couple, le disque d'embrayage 1 est muni d'un dispositif d'amortissement de torsion comportant un jeu de ressorts 8 intercalés entre les rondelles de guidage 4, 5 et un disque, dénommé, « voile 9 » qui est entraîné en rotation avec le moyeu 3. This clutch disc 1 is conventionally mounted so that the not shown friction disc, fixed on the periphery of one of the guide washers 4, 5, can be gripped by a clutch mechanism connected to the flywheel of the motor, and that the hub 3 is connected in rotation to an input shaft of the vehicle gearbox, via an internal toothing 7 of the hub 3. Between its peripheral torque transmission member and its central torque transmission member, the clutch disc 1 is provided with a torsion damping device comprising a set of springs 8 interposed between the guide washers 4, 5 and a disc, called "veil 9" which is rotated with the hub 3.
Les figures 2 et 3 représentent respectivement le voile 9 et la première rondelle de guidage 4 tels qu'ils se présenteraient si le disque d'embrayage 1 était démonté. Figures 2 and 3 respectively show the web 9 and the first guide ring 4 as they would occur if the clutch plate 1 was disassembled.
Le voile 9 de la figure 2 comporte des logements 10 pour les ressorts 8. Il présente un contour radialement interne 11 muni de dents pour sa liaison en rotation au moyeu 3, cette liaison pouvant être directe, par contact mécanique, ou indirecte, par exemple par un amortisseur de torsion supplémentaire dénommé pré-amortisseur. Une cassette 16 est fixée sur le voile 9 et peut contenir cet éventuel pré-amortisseur. La cassette 16 est ici en plastique et présente une face de frottement 12 tournée vers la première rondelle de guidage 4. The web 9 of FIG. 2 comprises housings 10 for the springs 8. It has a radially internal contour 11 provided with teeth for its connection in rotation with the hub 3, this connection being able to be direct, by mechanical contact, or indirectly, for example by an additional torsion damper called pre-damper. A cassette 16 is fixed on the web 9 and may contain this possible pre-damper. The cassette 16 is here made of plastic and has a friction face 12 facing towards the first guide washer 4.
Sur la figure 3, la première rondelle de guidage 4 présente des logements 13 pour les ressorts 8, des orifices 2 de fixation pour les rivets 6, ainsi qu'une rondelle de frottement 14 et une rondelle élastique de charge 15 superposées de sorte que la rondelle de frottement 14 viennent en contact avec la face de frottement 12 de la cassette 16, lorsque le disque d'embrayage 1 est assemblé. La rondelle élastique de charge 15 exerce alors une charge axiale entre la rondelle de frottement 14 et la première rondelle de guidage 4 de sorte que la rondelle de frottement 14 soit sollicitée contre la face de frottement 12 de la cassette 16. La rondelle de frottement 14 et la rondelle élastique de charge 15 sont solidaires en rotation de la première rondelle de guidage 4. Le contour interne 17 de la première rondelle de guidage 4 entoure le moyeu 3 mais ce dernier peut tourner librement par rapport aux deux rondelles de guidage 4, 5. In FIG. 3, the first guide washer 4 has housings 13 for the springs 8, fixing holes 2 for the rivets 6, as well as a friction washer 14 and an elastic load washer 15 superimposed so that the friction washer 14 come into contact with the friction face 12 of the cassette 16, when the clutch disc 1 is assembled. The resilient spring washer 15 then exerts an axial load between the friction washer 14 and the first guide washer 4 so that the friction washer 14 is urged against the friction face 12 of the cassette 16. The friction washer 14 and the resilient spring washer 15 are integral in rotation with the first guide ring 4. The inner contour 17 of the first guide ring 4 surrounds the hub 3, but the latter can rotate freely relative to the two guide rings 4, 5 .
La rotation relative possible entre le voile 9 et la première rondelle de guidage 4, qui tend à comprimer les ressorts 8 intercalés dans les logements 10, 13, entraine également une rotation relative de la rondelle de frottement 14 par rapport à la cassette 16 et, par conséquent, un frottement de la rondelle de frottement 14 sur la face de frottement 12 sous une charge déterminée par la rondelle élastique de charge 15. La figure 4 représente en perspective la rondelle élastique de charge 15 surmontée de la rondelle de frottement 14. The possible relative rotation between the web 9 and the first guide ring 4, which tends to compress the springs 8 interposed in the housings 10, 13, also causes a relative rotation of the friction washer 14 relative to the cassette 16 and, consequently, a friction of the friction washer 14 on the friction face 12 under a load determined by the load elastic washer 15. FIG. 4 is a perspective view of the elastic spring washer 15 surmounted by the friction washer 14.
La rondelle élastique de charge 15 présente une portion annulaire de contact 18 et, dans le présent exemple, quatre pattes de support 19 qui s'étendent à partir de la portion annulaire de contact 18. La portion annulaire de contact 18 a sensiblement la forme d'un disque destiné à venir exercer une pression sur la rondelle de frottement 14. Les quatre pattes de support 19 sont régulièrement réparties sur le contour externe de la portion annulaire de contact 18, suivant deux directions sensiblement perpendiculaires. La rondelle élastique de charge 15 est constituée d'un matériau choisi pour ses propriétés élastiques, par exemple un acier, et a par exemple une forme sensiblement tronconique pour pouvoir remplir sa fonction de ressort axial. Dans le présent exemple, la portion annulaire de contact 18 est du côté de la pointe du cône tandis que les pattes de support 19 sont du côté de la base du cône, ce qui implique que les pattes de support 19 s'étendent radialement vers l'extérieur de la rondelle élastique de charge 15. The resilient spring washer 15 has an annular contact portion 18 and, in the present example, four support legs 19 which extend from the annular contact portion 18. The annular contact portion 18 is substantially in the form of a disc intended to exert pressure on the friction washer 14. The four support lugs 19 are regularly distributed over the outer contour of the annular contact portion 18, in two substantially perpendicular directions. The elastic spring washer 15 is made of a material chosen for its elastic properties, for example a steel, and has for example a substantially frustoconical shape to be able to fulfill its function of axial spring. In the present example, the annular contact portion 18 is on the side of the tip of the cone while the support legs 19 are on the side of the base of the cone, which implies that the support legs 19 extend radially towards the cone. outside the load spring washer 15.
Dans le présent exemple, la rondelle élastique de charge 15 s'appuie par ses pattes de support 19 sur un premier élément tournant du disque d'embrayage constitué par la première rondelle de guidage 4, et s'appuie par sa portion annulaire de contact 18 sur la rondelle de frottement 14. Cette dernière s'appuie quant a elle sur un deuxième élément tournant constitué par la cassette 16 fixée au voile 9. In the present example, the resilient spring washer 15 is supported by its support lugs 19 on a first rotating element of the clutch disc constituted by the first guide washer 4, and is supported by its annular contact portion 18 on the friction washer 14. The latter relies on a second rotating element constituted by the cassette 16 attached to the web 9.
Dans le présent exemple, chaque patte de support 19 de la rondelle élastique de charge 15 comporte une paire d'orifices de passage 20 ainsi qu'une dent d'arrêt en rotation 22 destinée à coopérer avec la première rondelle de guidage 4 pour rendre la rondelle élastique de charge 15 solidaire en rotation de la première rondelle de guidage 4. In the present example, each support lug 19 of the resilient spring washer 15 has a pair of through holes 20 and a rotational stop tooth 22 intended to cooperate with the first guide ring 4 to make the resilient spring washer 15 integral in rotation with the first guide ring 4.
La rondelle de frottement 14, représentée figure 4, comporte une portion annulaire de frottement 21 ayant sensiblement une forme de disque et destinée à venir au contact de la face de frottement 12 de la cassette 16. Lors de la rotation relative du voile 9 par rapport aux rondelles de guidage 4, 5, le frottement a lieu entre la portion annulaire de frottement 21 de la rondelle de frottement 14 et la face de frottement 12 de la cassette 16. La rondelle de frottement 14 est ici métallique ce qui implique un frottement métal sur plastique avantageux. La rondelle de frottement 14 comporte de plus quatre paires de languettes de couplage 23, chacune s'étendant sensiblement perpendiculairement par rapport au plan de la portion annulaire de frottement 21 . The friction washer 14, shown in FIG. 4, comprises an annular friction portion 21 having substantially a disc shape and intended to come into contact with the friction face 12 of the cassette 16. During the relative rotation of the web 9 relative to to the guide washers 4, 5, the friction takes place between the annular friction portion 21 of the friction washer 14 and the friction face 12 of the cassette 16. The friction washer 14 is here metallic, which involves a metal friction on advantageous plastic. The friction washer 14 further comprises four pairs of coupling tongues 23, each extending substantially perpendicular to the plane of the annular friction portion 21.
La figure 5 représente le voile 9, la rondelle de frottement 14 et la rondelle élastique de charge 15 tels qu'ils se présentent à l'intérieur du disque d'embrayage 1 lorsqu'il est monté. La figure 5 ne montre pas la première rondelle de guidage 4 afin de laisser voir la coopération de la rondelle de frottement 14, de la rondelle élastique de charge 15 et du voile 9. Figure 5 shows the web 9, the friction washer 14 and the spring washer 15 as they are inside the clutch disk 1 when mounted. FIG. 5 does not show the first guide washer 4 in order to show the cooperation of the friction washer 14, the elastic load washer 15 and the veil 9.
La rondelle élastique de charge 15 presse donc la rondelle de frottement 14 contre la cassette 16, en s'appuyant, grâce à ses pattes de support 19, contre la première rondelle de guidage 4. Les languettes de couplage 23 de la rondelle de frottement 14 traversent les orifices de passage 20 de la rondelle élastique de charge 15 comme montré sur la figure 5. The resilient spring washer 15 then presses the friction washer 14 against the cassette 16, relying, thanks to its support legs 19, against the first guide ring 4. The coupling tongues 23 of the friction washer 14 through the passage orifices 20 of the elastic load washer 15 as shown in FIG. 5.
La rondelle de frottement 14 couplée à la rondelle élastique de charge 15 est représentée en perspective à la figure 7, Les languettes de couplage 23 traversant les orifices de passage 20. The friction washer 14 coupled to the spring washer 15 is shown in perspective in FIG. 7, the coupling tongues 23 passing through the through holes 20.
La figure 8 est une vue de détail de l'ensemble de la figure 7, et montre, vu de dessous, l'une des pattes de support 19 de la rondelle élastique de charge 15 traversée par les languettes de couplage 23. Les languettes de couplage 23 traversent aussi des orifices d'extrémité 24 pratiqués dans la première rondelle de guidage 4. La figure 6 est identique à la figure 5, si ce n'est que la première rondelle de guidage 4 a cette fois été représentée et montre les languettes de couplage 23 insérées dans les orifices d'extrémité 24. FIG. 8 is a detailed view of the assembly of FIG. 7, and shows, seen from below, one of the support lugs 19 of the elastic load washer 15 traversed by the coupling tongues 23. The tongues of FIG. coupling 23 also pass through end orifices 24 formed in the first guide ring 4. FIG. 6 is identical to FIG. 5, except that the first guide ring 4 has in this case been shown and shows the tabs coupling 23 inserted into the end holes 24.
La rondelle de frottement 14, la rondelle élastique de charge 15, et la première rondelle de guidage 4 sont solidaires en rotation selon plusieurs variantes. The friction washer 14, the resilient spring washer 15, and the first guide washer 4 are integral in rotation in several variants.
Selon une première variante, et en référence à la figure 9, la rondelle élastique de charge 15 est montée solidaire en rotation de la première rondelle de guidage 4 grâce à chaque dent d'arrêt en rotation 22 qui est insérée dans une rainure d'arrêt en rotation 25 pratiquée dans la première rondelle de guidage 4. La figure 3 montre les quatre dents d'arrêt en rotation 22 insérées dans les quatre rainures d'arrêt en rotation 25. Chaque patte de support 19 de la rondelle élastique de charge 15 est disposée contre la première rondelle de guidage 4, avec leur dent d'arrêt agencées circonférenciellement entre deux ressorts consécutifs. According to a first variant, and with reference to FIG. 9, the elastic spring washer 15 is mounted to rotate with the first guide ring 4 by virtue of each rotation stop tooth 22 which is inserted into a stop groove in rotation in the first guide ring 4. FIG. 3 shows the four rotational stop teeth 22 inserted in the four rotational locking grooves 25. Each support lug 19 of the spring load washer 15 is disposed against the first guide ring 4, with their stop tooth arranged circumferentially between two consecutive springs.
Dans ce premier mode de réalisation, la rondelle de frottement 14 est montée solidaire en rotation de la rondelle élastique de charge 15 grâce aux languettes de couplage 23 qui sont ajustées en largeur dans les orifices de passage 20 de la rondelle élastique de charge 15. Par exemple, les orifices de passage 20 ont un contour sensiblement rectangulaire pour procurer un contact plan sur plan avec les tranches des languettes de couplage 23 qui sont montées ajustées, voire légèrement serrées, dans les orifices de passage 20 afin de garantir l'entraînement en rotation d'une rondelle par l'autre dans les deux sens de rotation. Par ailleurs, les orifices d'extrémité 24 sont de largeur supérieure aux languettes de couplage 23 afin que les languettes de couplage 23 puissent traverser librement les orifices d'extrémité 24 sans toucher les bords. La largeur s'étend ici dans la direction circonférentielle. Les orifices d'extrémité 24 n'interfèrent ainsi pas avec les languettes de couplage 23, ils ne contribuent pas à rendre solidaire en rotation les deux rondelles 14, 15. Les orifices d'extrémité 24 permettent seulement le passage des languettes de couplage 23 pour que ces dernières ne butent pas axialement sur la première rondelle de guidage 4 lorsque la rondelle élastique de charge 15 est comprimée contre la première rondelle de guidage 4. Selon cette première variante, les languettes de couplage 23 de la rondelle de frottement 14 peuvent être avantageusement raccourcies axialement car elles ne sont couplées en rotation qu'à la rondelle élastique de charge 15. In this first embodiment, the friction washer 14 is mounted to rotate with the resilient spring washer 15 by virtue of the coupling tongues 23 which are adjusted in width in the passage orifices 20 of the elastic load washer 15. By For example, the through-holes 20 have a substantially rectangular contour to provide plane-to-plane contact with the slices of the coupling tongues 23 which are fitted, or even slightly tightened, in the through holes 20 in order to guarantee the rotational drive. one washer by the other in both directions of rotation. Furthermore, the end ports 24 are wider than the coupling tongues 23 so that the coupling tongues 23 can freely pass through the end holes 24 without touching the edges. The width here extends in the circumferential direction. The end holes 24 thus do not interfere with the coupling tongues 23, they do not contribute to make the two washers 14, 15 integral in rotation. The end openings 24 allow only the passage of the coupling tongues 23 to pass through. that the latter do not abut axially on the first guide ring 4 when the resilient spring washer 15 is pressed against the first guide ring 4. According to this first variant, the coupling tongues 23 of the friction ring 14 can be advantageously shortened axially because they are coupled in rotation only to the load washer 15.
Selon une deuxième variante, la rondelle de frottement 14 est montée solidaire en rotation sur la première rondelle de guidage 4 grâce aux languettes de couplage 23 qui sont ajustées en largeur dans les orifices d'extrémité 24 de la première rondelle de guidage 4. Par exemple, les orifices d'extrémité 24 ont un contour sensiblement rectangulaire pour procurer un contact plan sur plan avec les tranches des languettes de couplage 23 qui sont montées ajustées, voire légèrement serrées, dans ces orifices d'extrémité 24 afin de garantir le couplage en rotation de la rondelle de frottement 23 et de la première rondelle de guidage 4, dans les deux sens de rotation. Selon cette deuxième variante, les orifices de passage 20 sont cette fois de largeur supérieure aux languettes de couplage 23 afin que les languettes de couplage 23 puissent traverser librement les orifices de passage 20 sans toucher les bords. Les orifices de passage 20 n'interfèrent ainsi pas avec les languettes de couplage 23 et contribuent uniquement à permettre le passage de la languette de couplage 23 au travers de la patte de support 19. Selon une troisième variante, relative à la figure 10, les pattes de support 19 de la rondelle élastique de charge 15 ne comportent pas de dent d'arrêt en rotation 22. Les orifices de passage 20, aussi bien que les orifices d'extrémité 24, sont dimensionnés en largeur pour être ajustés aux languettes de couplage 23. Les languettes de couplage 23 sont ainsi montées ajustées, voire légèrement serrées, dans les orifices de passage 20 et également dans les orifices d'extrémité 24 de sorte que les languettes de couplage 23 assurent directement le couplage, dans les deux sens de rotation, de la rondelle de frottement 14 et de la rondelle élastique de charge 15 avec la première rondelle de guidage 4. According to a second variant, the friction washer 14 is rotatably mounted on the first guide ring 4 by virtue of the coupling tongues 23 which are adjusted in width in the end orifices 24 of the first guide ring 4. For example the end ports 24 have a substantially rectangular contour to provide plane-to-plane contact with the wafers of the coupling tongues 23 which are fitted or even slightly tightened in these end ports 24 to ensure rotational coupling of the friction washer 23 and the first guide ring 4, in both directions of rotation. According to this second variant, the passage orifices 20 are this time of greater width than the coupling tongues 23 so that the coupling tongues 23 can freely pass through the through holes 20 without touching the edges. The passage holes 20 thus do not interfere with the coupling tongues 23 and only serve to allow the passage of the coupling tongue 23 through the support lug 19. According to a third variant, relating to FIG. Support tabs 19 of load spring washer 15 have no rotational stop teeth 22. Through holes 20, as well as end ports 24, are sized in width to be fitted to the coupling tabs. 23. The coupling tongues 23 are thus fitted, or even slightly tightened, in the through-holes 20 and also in the end orifices 24 so that the coupling tongues 23 provide direct coupling in both directions of rotation. , the friction washer 14 and the elastic load washer 15 with the first guide ring 4.
Sur la figure 11 , on observe une variante de réalisation des languettes de couplage 23. Elles comportent un bossage 42 coopérant avec une bordure d'un orifice de passage 20 et formant ainsi un élément de retenue axiale retenant axialement la rondelle de frottement 14 sur la rondelle élastique de charge 15. Ainsi la rondelle élastique de charge et la rondelle de frottement peuvent former un sous ensemble pré assemblé. Le bossage peut être obtenu au moyen d'un procédé de déformation des languettes de couplage, par exemple au moyen d'un procédé de billage. Les languettes de couplage s'étendent dans une direction axiale pour favoriser la retenue axiale entre le bossage 42 et l'orifice de passage 20 associé. FIG. 11 shows an alternative embodiment of the coupling tongues 23. They comprise a boss 42 cooperating with a border of a passage orifice 20 and thus forming an axial retaining element axially retaining the friction washer 14 on the Elastic load washer 15. Thus the load spring washer and the friction washer can form a pre-assembled subassembly. The boss can be obtained by means of a method of deforming the coupling tongues, for example by means of a blasting process. The coupling tabs extend in an axial direction to promote axial retention between the boss 42 and the associated through port.
D'autres variantes de réalisation du peuvent être mises en œuvre sans sortir du cadre de l'invention. Par exemple, la portion annulaire de contact 18 peut être du côté de la base du cône que constitue la rondelle élastique de charge 15, tandis que ses pattes de support 19 sont du côté de la pointe du cône, ce qui impliquerait que les pattes de support 19 s'étendent radialement vers l'intérieur de la rondelle élastique de charge 15. Dans ce cas, la rondelle de frottement 14 pourrait être adaptée à une telle rondelle élastique de charge 15, en présentant des languettes de couplage 23 s'étendant radialement vers l'intérieur et coopérant avec les pattes de support 19 en traversant les orifices de passage 20. Par ailleurs, le couple formé par la rondelle de frottement 14 et la rondelle élastique de charge 15 peut être axialement situé ailleurs dans le disque d'embrayage, ce qui implique que le premier et deuxième éléments tournants du disque d'embrayage peuvent être d'autres éléments que, respectivement, la première rondelle de guidage 4 (par exemple, la deuxième rondelle de guidage 5 ou un autre élément), et la cassette 16 (par exemple, le voile 9 ou un autre élément), il suffit qu'une rotation relative soit permise, grâce à l'amortisseur de torsion, entre les premier et deuxième éléments tournants. Other embodiments of the implementation can be implemented without departing from the scope of the invention. For example, the annular contact portion 18 may be on the side of the base of the cone that constitutes the spring washer 15 load, while its support legs 19 are on the side of the tip of the cone, which would imply that the legs of 19 in this case, the friction washer 14 could be adapted to such a resilient washer 15, having radially extending coupling tongues 23 inward and cooperating with the support lugs 19 through the passage orifices 20. Furthermore, the torque formed by the friction washer 14 and the load elastic washer 15 may be axially located elsewhere in the clutch disk, which implies that the first and second rotary elements of the clutch disk may be other elements than, respectively, the first guide ring 4 (for example, the second guide ring 5 or another element), and the cassette 16 (for example, the veil 9 or another element), it is sufficient that one relative rotation is allowed, thanks to the torsion damper, between the first and second rotating elements.
Plusieurs paires de rondelle 14, 15 peuvent également être prévues, empilées, au lieu d'une seule rondelle de frottement 14 et une seule rondelle élastique de charge 15. Several pairs of washers 14, 15 may also be provided, stacked, instead of a single friction washer 14 and a single spring washer 15.
De plus, pour un disque d'embrayage comportant plusieurs amortisseurs de torsion, l'invention peut être appliquée à l'un quelconque des amortisseurs de torsion. In addition, for a clutch disc having a plurality of torsion dampers, the invention can be applied to any of the torsion dampers.

Claims

REVENDICATIONS
1 . Disque d'embrayage (1 ) pour la liaison d'un moteur et d'une transmission, comportant un organe périphérique de transmission de couple et un organe central de transmission de couple (3) montés mobiles en rotation l'un par rapport à l'autre selon un axe (X), et au moins un dispositif d'amortissement de torsion interposé entre l'organe périphérique de transmission de couple et l'organe central de transmission de couple, le dispositif d'amortissement de torsion comportant au moins un ressort (8) agencé pour se déformer lorsque l'organe périphérique de transmission de couple et l'organe central de transmission de couple (3) tournent l'un par rapport à l'autre, une rondelle élastique de charge (15) et une rondelle de frottement (14) coaxiales avec l'organe central de transmission de couple (3) et solidaires en rotation d'un premier élément tournant (4), la rondelle élastique de charge (15) appliquant une charge axiale sur la rondelle de frottement (14) qui est disposée contre un deuxième élément tournant (16), une rotation relative étant permise entre ledit premier élément tournant (4) et ledit deuxième élément tournant (16), caractérisé en ce que la rondelle élastique de charge (15) comporte une portion annulaire de contact (18) et au moins deux pattes de support (19) qui s'étendent à partir de la portion annulaire de contact (18), la rondelle élastique de charge (15) s'appuyant par ses pattes de support (19) sur ledit premier élément tournant (4), et s'appuyant par sa portion annulaire de contact directement ou indirectement sur la rondelle de frottement (14) ; et en ce que la rondelle élastique de charge (15) comporte au moins un orifice de passage (20) ménagé dans au moins une de ses pattes de support (19), la rondelle de frottement (14) comportant au moins une languette de couplage (23) traversant ledit au moins un orifice de passage (20). 1. Clutch disk (1) for the connection of a motor and a transmission, comprising a peripheral torque transmission member and a central torque transmission member (3) mounted for rotation relative to one another. another along an axis (X), and at least one torsion damping device interposed between the peripheral torque transmission member and the central torque transmission member, the torsion damping device having at least one spring (8) arranged to deform when the peripheral torque transmitting member and the central torque transmitting member (3) rotate relative to one another, an elastic load washer (15) and a friction washer (14) coaxial with the central torque transmission member (3) and integral in rotation with a first rotating element (4), the elastic load washer (15) applying an axial load on the friction washer (14) which is arranged cont re a second rotating element (16), a relative rotation being allowed between said first rotating element (4) and said second rotating element (16), characterized in that the load elastic washer (15) comprises an annular contact portion ( 18) and at least two support lugs (19) which extend from the annular contact portion (18), the elastic load washer (15) supported by its supporting lugs (19) on said first rotating element (4), and supported by its annular contact portion directly or indirectly on the friction washer (14); and in that the elastic spring washer (15) has at least one through hole (20) in at least one of its support legs (19), the friction washer (14) having at least one coupling tongue (23) passing through said at least one through hole (20).
2. Disque d'embrayage selon l'une des revendications 1 , caractérisé en ce que la rondelle élastique de charge (15) comporte deux orifices de passage (20) dans chaque patte de support (19) . 2. clutch disc according to one of claims 1, characterized in that the spring washer load (15) has two through holes (20) in each support lug (19).
3. Disque d'embrayage selon l'une des revendications 1 à 2, caractérisé en ce que la rondelle de frottement (14) comporte une portion annulaire de frottement (21 ) et quatre paires de languettes de couplage (23) s'étendant sensiblement perpendiculairement au plan de la portion annulaire de frottement (21 ) en direction du premier élément tournant (4). 3. clutch disc according to one of claims 1 to 2, characterized in that the friction washer (14) comprises an annular friction portion (21) and four pairs of coupling tongues (23) extending substantially perpendicular to the plane of the annular friction portion (21) towards the first rotating element (4).
4. Disque d'embrayage selon l'une des revendications 1 à 3, caractérisé en ce que la rondelle élastique de charge (15) comporte une dent d'arrêt en rotation (22) sur au moins une patte de support (19), la dent d'arrêt en rotation (22) étant insérée dans un orifice d'arrêt en rotation (25) pratiqué dans le premier élément tournant (4). Clutch disk according to one of Claims 1 to 3, characterized in that the load spring washer (15) has a rotational stop tooth (22) on at least one support lug (19). the rotational stop tooth (22) being inserted into a rotational stop (25) formed in the first rotating element (4).
5. Disque d'embrayage selon l'une des revendications 1 à 4, caractérisé en ce que la au moins une languette de couplage (23) est ajustée dans le au moins un orifice de passage (20) de sorte que la rondelle de frottement (14) soit bloquée en rotation avec la rondelle élastique de charge (15) selon les deux sens de rotation. Clutch disc according to one of Claims 1 to 4, characterized in that the at least one coupling tongue (23) is fitted into the at least one through hole (20) so that the friction washer (14) is locked in rotation with the elastic spring washer (15) in both directions of rotation.
6. Disque d'embrayage selon l'une des revendications 1 à 5, caractérisé en ce que la au moins une languette de couplage (23) est de plus insérée dans au moins un orifice d'extrémité (24) pratiqué dans le premier élément tournant (4). Clutch disk according to one of Claims 1 to 5, characterized in that the at least one coupling tongue (23) is further inserted into at least one end orifice (24) formed in the first element. rotating (4).
7. Disque d'embrayage selon la revendication 6, caractérisé en ce que la au moins une languette de couplage (23) est ajustée dans le au moins un orifice d'extrémité (24) de sorte que la rondelle de frottement (14) soit bloquée en rotation avec le premier élément tournant (4) selon les deux sens de rotation. Clutch disc according to Claim 6, characterized in that the at least one coupling tongue (23) is fitted into the at least one end orifice (24) so that the friction washer (14) is locked in rotation with the first rotating element (4) in both directions of rotation.
8. Disque d'embrayage selon l'une des revendications 1 à 7, caractérisé en ce qu'il comporte un voile (9) relié à l'un parmi l'organe central de transmission de couple (3) et l'organe périphérique de transmission de couple, et deux rondelles de guidage (4, 5) reliées à l'autre parmi l'organe central de transmission de couple (3) et l'organe périphérique de transmission de couple et disposées de part et d'autre du voile (9), ainsi que des ressorts (8) interposés entre le voile (9) et les rondelles de guidage (4, 5), le premier élément tournant (4) étant constitué d'une des rondelles de guidage (4) ou du voile (9). 8. clutch disc according to one of claims 1 to 7, characterized in that it comprises a web (9) connected to one of the central torque transmission member (3) and the peripheral member torque transmission, and two guide washers (4, 5) connected to one another of the central torque transmitting member (3) and the peripheral torque transmission member and disposed on either side of the sail (9), as well as springs (8) interposed between the web (9) and the guide washers (4, 5), the first rotating element (4) consisting of one of the guide washers (4) or of the veil (9).
9. Disque d'embrayage selon la revendication 8, caractérisé en ce que le voile (9) est relié à l'organe central de transmission de couple (3), et les deux rondelles de guidage (4, 5) sont reliées à l'organe périphérique de transmission de couple, le premier élément tournant (4) étant constitué d'une des rondelles de guidage (4). Clutch disc according to Claim 8, characterized in that the web (9) is connected to the central torque transmitting member (3), and the two guide washers (4, 5) are connected to the clutch disk (9). peripheral device for transmitting torque, the first rotating element (4) consisting of one of the guide washers (4).
10. Disque d'embrayage selon la revendication 9, caractérisé en ce que les pattes de support (19) de la rondelle élastique de charge (15) ont des extrémités radiales externes qui sont disposées contre l'une des rondelles de guidage (4), circonférenciellement entre deux ressorts consécutifs (8). Clutch disk according to Claim 9, characterized in that the supporting lugs (19) of the elastic load washer (15) have external radial ends which are arranged against one of the guide washers (4). circumferentially between two consecutive springs (8).
11 . Disque d'embrayage selon l'une des revendications 8 à 10, caractérisé en ce que le deuxième élément tournant (16) est un élément lié au voile (9). 11. Clutch disc according to one of Claims 8 to 10, characterized in that the second rotating element (16) is a component connected to the web (9).
12. Disque d'embrayage selon l'une des revendications précédentes, caractérisé en ce que les pattes de support (19) s'étendent radialement vers l'extérieur de la rondelle élastique de charge (15). 12. clutch disc according to one of the preceding claims, characterized in that the support lugs (19) extend radially outwardly of the elastic load washer (15).
13. Disque d'embrayage selon l'une des revendications 1 à 12, caractérisé en ce que la au moins une languette de couplage (23) est agencée sur la périphérie extérieure de la rondelle de frottement (14). 13. clutch disc according to one of claims 1 to 12, characterized in that the at least one coupling tongue (23) is arranged on the outer periphery of the friction washer (14).
14. Disque d'embrayage selon l'une des revendications 1 à 13, sans leur rattachement à la revendication 5, caractérisé en ce que la rondelle de frottement est montée solidaire en rotation sur le premier élément tournant et la rondelle élastique de charge (15) est montée solidaire en rotation sur la rondelle de frottement de sorte que la rondelle élastique de charge (15) soit montée solidaire en rotation du premier élément tournant (4) uniquement par l'intermédiaire de la rondelle de frottement (14). 14. Clutch disk according to one of claims 1 to 13, without their attachment to claim 5, characterized in that the friction washer is mounted to rotate with the first rotating element and the elastic washer load (15). ) is rotatably mounted on the friction washer so that the load elastic washer (15) is integral in rotation with the first rotating element (4) only through the friction washer (14).
15. Disque d'embrayage selon l'une des revendications 1 à 14, caractérisé en ce qu'au moins l'une des languettes de couplage comporte un bossage (42) coopérant avec une bordure du au moins un orifice de passage (20) et formant un élément de retenue axiale retenant axialement la rondelle de frottement sur la rondelle élastique de charge. 15. clutch disc according to one of claims 1 to 14, characterized in that at least one of the coupling tongues comprises a boss (42) cooperating with a border of the at least one passage opening (20). and forming an axial retaining member axially retaining the friction washer on the elastic load washer.
PCT/FR2018/051448 2017-06-29 2018-06-18 Clutch disc with friction device WO2019002716A1 (en)

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BR112019027326-3A BR112019027326B1 (en) 2017-06-29 2018-06-18 CLUTCH DISC WITH FRICTION DEVICE
CN201880044190.3A CN110809678A (en) 2017-06-29 2018-06-18 Clutch disc with friction device

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FR1756077A FR3068410B1 (en) 2017-06-29 2017-06-29 CLUTCH DISC WITH FRICTION DEVICE

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FR3108694B1 (en) 2020-03-31 2022-07-22 Valeo Embrayages "FRICTION DISC FOR TORSIONAL DAMPER"

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156039A (en) * 1984-03-17 1985-10-02 Fichtel & Sachs Ag Clutch disc for a motor vehicle friction clutch
DE19644046A1 (en) * 1996-10-31 1998-05-20 Mannesmann Sachs Ag Automotive friction clutch plate
FR2890713A1 (en) 2005-09-13 2007-03-16 Valeo Embrayages FRICTION CLUTCH, IN PARTICULAR FOR MOTOR VEHICLE, WITH PERFECTED ELASTIC WASHERS.
FR2915779A1 (en) * 2007-05-04 2008-11-07 Valeo Embrayages Friction clutch for motor vehicle, has friction washer comprising support and housing surface to support and house radial tabs of spring washer, and to limit axial displacement of tabs between drive washer and friction washer
WO2009004145A1 (en) * 2007-05-22 2009-01-08 Valeo Embrayages Friction clutch comprising an improved friction ring and an improved guide ring

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107208737B (en) * 2014-12-15 2019-08-23 法雷奥离合器公司 Particularly for the torque transmitter of motor vehicles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156039A (en) * 1984-03-17 1985-10-02 Fichtel & Sachs Ag Clutch disc for a motor vehicle friction clutch
DE19644046A1 (en) * 1996-10-31 1998-05-20 Mannesmann Sachs Ag Automotive friction clutch plate
FR2890713A1 (en) 2005-09-13 2007-03-16 Valeo Embrayages FRICTION CLUTCH, IN PARTICULAR FOR MOTOR VEHICLE, WITH PERFECTED ELASTIC WASHERS.
FR2915779A1 (en) * 2007-05-04 2008-11-07 Valeo Embrayages Friction clutch for motor vehicle, has friction washer comprising support and housing surface to support and house radial tabs of spring washer, and to limit axial displacement of tabs between drive washer and friction washer
WO2009004145A1 (en) * 2007-05-22 2009-01-08 Valeo Embrayages Friction clutch comprising an improved friction ring and an improved guide ring

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FR3068410A1 (en) 2019-01-04
FR3068410B1 (en) 2019-08-23
CN110809678A (en) 2020-02-18
BR112019027326A2 (en) 2020-07-28
BR112019027326B1 (en) 2023-09-26
KR20200021949A (en) 2020-03-02

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