WO2016184986A1 - Torsional damper for motor vehicle torque transmission device - Google Patents

Torsional damper for motor vehicle torque transmission device Download PDF

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Publication number
WO2016184986A1
WO2016184986A1 PCT/EP2016/061331 EP2016061331W WO2016184986A1 WO 2016184986 A1 WO2016184986 A1 WO 2016184986A1 EP 2016061331 W EP2016061331 W EP 2016061331W WO 2016184986 A1 WO2016184986 A1 WO 2016184986A1
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WO
WIPO (PCT)
Prior art keywords
components
rotation
primary
torque
shock absorber
Prior art date
Application number
PCT/EP2016/061331
Other languages
French (fr)
Inventor
Jérôme BOULET
Daniel Fenioux
Christophe Mollier
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
Publication of WO2016184986A1 publication Critical patent/WO2016184986A1/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
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
    • F16F15/1213—Spiral springs, e.g. lying in one plane, around axis of rotation
    • 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
    • F16F15/1297—Overload protection, i.e. means for limiting torque
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/131—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses
    • F16F15/133—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses using springs as elastic members, e.g. metallic springs
    • F16F15/1333—Spiral springs, e.g. lying in one plane, around axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/131—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses
    • F16F15/139—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses characterised by friction-damping means
    • F16F15/1397—Overload protection, i.e. means for limiting torque

Definitions

  • the invention relates to a torsion damper for a torque transmission device, in particular for an automobile, in particular for a transmission chain.
  • Torsional dampers are known whose input and output elements are coupled in rotation by damping means for transmitting a torque and damping rotation acyclisms.
  • the damping means are generally helical, bent, circumferentially disposed springs in an annular, sealed chamber which is formed between the input and output members.
  • the coil springs are arranged so that any rotation of one of said flywheels relative to the other causes compression of the springs in one direction or the other, which exerts a restoring force able to return said elements to an angular position. relative rest.
  • the stiffness of such a damper is determined as a function of the number of helical springs that compose it, the intrinsic stiffness of the springs and the implantation diameter of the springs.
  • the choice of the stiffness of such torsion dampers results from a compromise between filtration efficiency of the acyclisms which increases when the stiffness decreases and the capacity to transmit the maximum engine torque without the fact that the turns of the springs abut the against each other, which requires sufficient stiffness.
  • damping proposed by these dampers is not entirely satisfactory, particularly because of the high friction and it has also been proposed to realize torsion dampers with a blade, as described in document FR3000155 which illustrates a shock absorber of torsion comprising two resilient damping means each formed by a resilient blade mounted on the input member and cooperating with a cam follower mounted on the output member.
  • the invention aims to improve this type of damper.
  • the invention relates to a damper, in particular a torsion damper intended to be disposed downstream of an automobile combustion engine, in particular in the transmission chain, the damper comprising:
  • a primary movable element rotated relative to an axis of rotation, intended to be connected to a torque input element
  • a movable element secondary in rotation with respect to the axis of rotation, and movable in rotation with respect to the first element relative to the axis of rotation, intended to be connected to a torque output element
  • the transmission member mounted integral in rotation with one of the primary and secondary mobile elements, the transmission member comprising an elastic blade capable of flexing and transmitting a torque between these two elements, the bending of the blade elastic being accompanied by a relative rotation between the primary and secondary movable elements, along the axis of rotation,
  • a disengaging device arranged to interrupt the transmission of the torque between the torque input element and the torque output element, the disengagement device being actuated to interrupt the transmission of the torque when the angular displacement between the moving elements primary and secondary, relative to a relative angular position of rest, in one direction or the other, reaches a predetermined angle.
  • the interruption of the transmission is triggered according to the angular displacement between the primary and secondary elements, which allows for a more accurate trigger, especially compared to a trigger based on a limit torque value.
  • This breaking of the torque can be obtained in the direction of direct transmission and the retro direction.
  • the elastic blade is arranged to flex, during operation, in a plane perpendicular to the axis of rotation.
  • the elastic blade has a free end arranged to move, in particular partly radially, when the blade bends.
  • the transmission member is mounted to rotate with one of the primary and secondary elements and the elastic blade cooperates with a bearing element, integral in rotation with the other of the primary and secondary elements.
  • the support element is arranged radially outside the elastic blade. This allows to retain the blade when subjected to significant centrifugal forces.
  • the transmission member comprises a fixing portion attached to one of the primary and secondary elements.
  • the primary and secondary elements each comprise a stop intended to come into contact one against the other to limit the angular displacement between the two elements of the damper, and the disengaging device is arranged to interrupt the transmission of the couple before these stops come into contact.
  • the resilient blade has a cam surface.
  • the cam surface is concave along the entire length, this concavity being on the side of the axis of rotation.
  • the support member comprises a cam follower.
  • the damper is arranged so that the cam follower is held on the cam surface of its own even when torque transmission is interrupted.
  • the elastic blade of the transmission member extends circumferentially about the axis of rotation, from the attachment portion of the transmission member to the free distal end.
  • the cam surface is located on a surface of the blade located radially outside the blade.
  • the cam follower is disposed radially outwardly of the resilient blade.
  • the cam follower is a roller rotatably mounted on the other of the primary and secondary elements.
  • the cam surface is arranged such that, for an angular displacement between the primary element and the secondary element with respect to an angular position of rest, the cam follower exerts a bending force on the elastic blade producing a reaction force able to return said primary and secondary elements to said angular position of rest.
  • the damper comprises a plurality of transmission members, for example 2, 3, 4, 5 or 6.
  • the transmission members are arranged symmetrically with respect to the axis of rotation.
  • the transmission member comprises a plurality of resilient blades.
  • the elastic blades of the transmission member are symmetrical with respect to the axis of rotation.
  • the attachment portion and the resilient blade are integrally formed.
  • At least one of the primary and secondary elements comprises two components arranged to rotate together when they are coupled and to be able to rotate relative to each other when decoupled.
  • one of the primary and secondary elements comprises the two components, and one of these components comprises a hub arranged to support and center the other of the primary and secondary elements.
  • the disengaging device is arranged to disjoin these two components to interrupt the transmission of torque between the primary and secondary elements.
  • the two components are arranged to be rotatable by sliding relative to each other when decoupled.
  • this sliding generates a friction between the two components which limits the transmitted torque.
  • the slip is obtained by very brief interruptions in the transmission of the torque, for example of the order of a few milliseconds.
  • the disengaging device is arranged to reduce or eliminate the pressure exerted between the two components.
  • the torque interruption is very short, that is to say the order of a few milliseconds.
  • a friction occurs between the two components and the disengaging device behaves as a torque limiter.
  • the two components are arranged to rotate together under the effect of a pressure that keeps them integral when they are coupled.
  • the primary element comprises two components
  • one of the components is assembled with a hub of the damper, and in particular the other component carries a driving ring gear.
  • the disengaging device comprises a lever arranged to join and disjoin the two components as a function of the forces exerted on the lever.
  • the lever comprises at least one tongue interposed between the two components.
  • one of the components comprises a housing arranged to at least partially accommodate the other component.
  • the component that forms the housing comprises two parts assembled.
  • the housing is substantially annular.
  • this housing houses a diaphragm capable of exerting forces on the two components. These efforts have the effect of coupling in rotation these two components.
  • the tongue is connected to the diaphragm.
  • the diaphragm has an annular shape.
  • the diaphragm is made in a sheet.
  • the diaphragm is made in one piece with the tongue.
  • the diaphragm carries two tabs, preferably diametrically opposed and possibly symmetrical by 180 ° rotation.
  • the damper comprises as many tongues as elastic blades.
  • the damper comprises three resilient blades regularly arranged on the same plane, at 120 ° from each other
  • the diaphragm comprises three tongues regularly arranged on the same plane, at 120 ° from each other.
  • one of the primary and secondary elements comprises an anti-rotation member arranged to cooperate with the tongue to prevent it from rotating on this element.
  • the anti-rotation member comprises a notch in which the tongue extends.
  • the anti-rotation member is formed on the primary element.
  • the anti-rotation member is formed on one of these components.
  • the anti-rotation member is formed on one of these parts, in particular by cutting, and in particular the distance between the axis of rotation and the tongue is smaller than the distance between the anti-rotation member and the axis of rotation.
  • the tongue is permanently supported on a support face, the components are coupled or decoupled.
  • the tab bears on a coupling face to couple in rotation the two components.
  • the bearing face is arranged on one of the two components and the cutting face is arranged on the other of the two components.
  • the bearing face and the coupling face are opposite one another.
  • the bearing face and the coupling face are arranged in the housing.
  • the tongue comprises a bend arranged to abut against the coupling face.
  • the tongue comprises an end portion arranged to be moved axially for its actuation.
  • one of the components comprises a bearing face and the other of the components comprises a coupling face, the tongue being arranged to bear against these two faces when the components are coupled.
  • the entire annular portion of the diaphragm to which the tongue is connected is annularly supported on the bearing and coupling faces when the components are coupled.
  • the coupling face is provided on one of the two components, this component being intended to be fixed to the vehicle, in particular to the torque input element, for example to the crankshaft of a vehicle.
  • the bearing and coupling faces are facing one another.
  • the elastic prestressing of the diaphragm makes it possible to press the tongue both on the bearing face and on the coupling face, in order to couple the two components in rotation.
  • the tongue is permanently supported on the bearing face, the components are coupled or decoupled.
  • the tongue rests on the coupling face to couple in rotation the two components.
  • the bearing face is arranged on an assembled part of the component which forms the housing.
  • the pressure exerted by the tongue on the coupling face decreases to interrupt the transmission of torque between the two components. If necessary, the tab moves away from the coupling face to interrupt the torque transmission between the two components. If necessary, the tongue has a bend bearing on the coupling face.
  • the tongue comprises an end portion arranged to be moved axially for its actuation.
  • the transmission member is integral with an actuating member, in particular in the form of a washer, and this actuating member is arranged to be able to actuate the lever.
  • the actuating member comprises a ramp arranged to cooperate with the lever to actuate.
  • the actuating member is in the form of a washer, in particular fixed on the secondary element.
  • the ramps are formed on an outer edge of this washer.
  • the outer edge has a side facing the secondary element and this rim is arranged to bear on the tongue via this side.
  • the outer rim of the washer has a notch which comes opposite the lever when the damper is in the rest position.
  • the washer comprises openings receiving fixing elements for fixing the washer to the secondary element.
  • these fixing elements are arranged to also serve for fixing the transmission member on the secondary element.
  • the washer is made from a sheet.
  • the blade of the transmission member is arranged at a distance from the lever regardless of the angular position of the blade relative to the primary element.
  • the outer flange comprises a first stage, arranged between the notch and the ramp, along which the lever rotates when the torque is transmitted without sliding between the two components.
  • the predetermined angle at which the disengagement device is triggered is chosen as a function of the transmission member, including stresses likely to be supported (s) by his or her blades.
  • the disengaging device is arranged to be actuated when the angular displacement between the primary and secondary movable elements reaches a predetermined angle, in particular 50 °, in the forward direction, relative to the relative angular position of rest.
  • the disengaging device is arranged to be actuated when the angular displacement between the primary and secondary movable elements reaches a predetermined angle, especially 25 °, in the retro direction, relative to the relative angular position of rest.
  • the disengagement device is actuated during a relative angular rotation by a predetermined angle, for example 5 °.
  • the diaphragm deforms.
  • the diaphragm exerts an elastic return force capable of producing a return of the lever and a bringing together of the two components.
  • the tongue exerts a force on the coupling face to couple the two components. This effort comes in particular from the elasticity of the diaphragm, mounted prestressed between these two components.
  • the actuating member axially pulls the tongue towards the blades to decouple the two components.
  • the transmission member is arranged to operate the lever.
  • the transmission member comprises an actuating portion arranged to be able to bear, particularly directly against the lever to actuate.
  • the transmission member comprises a bend and this actuating portion is formed on this bend.
  • the bend of the transmission member connects the blade of the transmission member to a fixing portion of the transmission member.
  • the lever is radially between the blade and the axis of rotation when the damper is at rest.
  • the tongue comprises at least one chamfered edge arranged to cooperate with the actuating portion of the transmission member.
  • the tongue comprises two chamfered edges arranged to cooperate respectively with each of the actuating portions of the two transmission members.
  • the actuating portion has a side facing the primary element and this actuating portion and arranged to bear on the tongue, via this side.
  • the tongue exerts a force on the coupling face to couple the two components.
  • the elastic preload of the diaphragm allows the tongue to exert a force on both the bearing face and the coupling face, to couple the two components in rotation.
  • the portion of the tongue that exerts a force on the coupling face is radially inside the portion of the tongue that exerts a force on the bearing face.
  • the tongue is pushed axially in the opposite direction to the transmission members to decouple the two components.
  • the primary element comprises the two components arranged to rotate together when they are coupled and to rotate relative to one another when they are decoupled
  • one of the components is intended to it is connected to the torque input element and is secured to rotate with an annular support on which is fixed a drive ring gear.
  • the other of the two components comprises one of the support member and the transmission member.
  • the other of the two components carries a cam follower arranged to cooperate with the transmission member, the transmission member being carried by the secondary element.
  • the annular support is an annular support sheet.
  • the annular support may comprise at least one stiffener.
  • Each stiffener can be made by axially deforming the annular support, this deformation being performed circumferentially around the axis of rotation, for example by stamping the sheet.
  • the annular sheet metal support comprises two radially offset stiffeners. These two stiffeners can be axially offset.
  • the annular support may comprise two parts extending perpendicularly to the axis of rotation. These two parts can be connected by a third portion cone portion.
  • the first part is arranged radially inside the third part cone portion.
  • the second part is arranged radially outside the third part cone portion.
  • a stiffener connects the third portion of the annular support to the first portion of the annular support and another stiffener connects the third portion of the annular support to the second portion of the annular support.
  • the annular support integral in rotation of the component intended to be connected to the torque input element, comprises an annular cavity in which is housed at least partially the other of the two components.
  • the annular support and the component intended to be connected to the torque input element comprise orifices arranged so that the annular support and this component are able to be fixed together on the torque input element, in particular with respect to common fastening screws.
  • these fixing screws are used both for mounting the damper on the torque input element and for assembling the annular support with the component connected to the torque input element.
  • the component intended to be connected to the torque input element comprises a recess in which is housed the first portion of the annular support extending perpendicular to the axis of rotation.
  • the annular support comprises a cylindrical radially outer portion, extending axially.
  • the ring gear is fixed, for example by welding, around this cylindrical portion.
  • the invention also relates to a damper, in particular a torsion damper intended to be disposed downstream of an automobile combustion engine, in particular in the transmission chain, the damper comprising:
  • a primary movable element rotating relative to an axis of rotation, intended to be connected to a torque input element
  • a movable element secondary in rotation with respect to the axis of rotation, and movable in rotation with respect to the first element relative to the axis of rotation, intended to be connected to a torque output element
  • At least one resilient member coupling the primary and secondary movable elements and able to transmit a torque between these two elements, the deformation of the elastic member being accompanied by a relative rotation between the primary and secondary movable elements, according to the rotation axis,
  • a disengaging device arranged to interrupt the transmission of torque between the torque input member and the torque output member.
  • the elastic member may comprise a helical spring.
  • the resilient member may comprise a blade transmission member mounted integral with one of the primary and secondary mobile elements and cooperating with a support element, mounted integral with the other primary and secondary mobile element isseménts.
  • the disengagement device is actuated to interrupt the transmission of the torque when the angular displacement between the primary and secondary movable elements, relative to a relative angular position of rest, in one direction or the other, reaches a predetermined angle.
  • the disengaging device may comprise one or more of the aforementioned characteristics.
  • the primary element comprises the two components arranged to rotate together when they are coupled and to rotate relative to each other when decoupled
  • one of the components is intended to be connected to the torque input element and is secured to rotate with an annular support on which is fixed a driving ring gear.
  • the annular support may comprise one or more of the aforementioned features.
  • Figure 1 is a front view, schematic and partial, of a damper according to a first embodiment of the invention.
  • FIG. 2 is a schematic and partial sectional view along H-H of the damper of FIG. 1.
  • Figure 3 is a schematic and partial perspective view of the damper of Figure 1, without the transmission member and without the secondary element.
  • FIG. 4 is a diagrammatic and partial perspective view of the shock absorber of FIG. 3, with the transmission member and without the secondary element.
  • FIG. 5 represents in isolation, schematically and partially, the actuating member of FIG. 1.
  • Figure 6 is a front view, schematic and partial, of a damper according to a second embodiment.
  • FIG. 7 is a schematic and partial sectional view along G-G of the damper of FIG. 6.
  • Figure 8 is a front view, schematic and partial, of the damper of Figure 6 in a second relative angular position of the primary and secondary elements.
  • FIG. 9 is a schematic and partial sectional view along HH of the damper of FIG. 8.
  • FIG. 10 represents in isolation, in a schematic and partial manner, the lever of FIG.
  • Fig. 11 shows a sectional view of another embodiment.
  • 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 double damping flywheel.
  • the "radial” orientation is directed orthogonally to the X axis of rotation of the double damping flywheel determining the “axial” orientation and, from the inside towards the outside away from said axis X, the "Circumferential" orientation is directed orthogonally to the X axis of rotation of the double damping flywheel and substantially perpendicular to the radial direction.
  • circumferentially is used here to describe a curved path, circular or otherwise, around the axis of rotation, and does not necessarily refer to a closed curve here.
  • boundary and internal are used to define the relative position of one element relative to another, with reference to the axis X of rotation of the double damping flywheel, an element close to the axis is thus qualified. internally as opposed to an outer member located radially peripherally.
  • FIGS. 1 and 2 show a damper 1 forming a double damping flywheel.
  • the damper 1 comprises a primary element 2, forming a primary flywheel intended to be fixed at the end of a crankshaft of an internal combustion engine, not shown, and a secondary element 3 forming a secondary flywheel which is centered and guided on the primary flywheel 2 by means of a bearing 4, such as a rolling bearing ball.
  • the secondary element 3 is intended to form the reaction plate of a clutch, not shown, connected to the input shaft of a gearbox.
  • the primary element 2 comprises a radially inner hub 5 supporting the bearing 4, an annular portion 6 extending radially from the hub 5 and a cylindrical skirt 7 extending axially towards the rear.
  • the primary element 2 is provided with orifices 8a allowing the passage of fastening screws 8, for fixing the primary element 2 on the crankshaft of the engine.
  • the primary element 2 carries, on its outer periphery, a ring gear 9 for driving in rotation of the primary element 2, using a starter.
  • the rolling bearing 4 comprises an outer ring, an inner ring and rolling bodies 4a extending between said inner and outer rings.
  • the secondary element 3 has on its inner periphery a shoulder 3a serving to support the outer ring of the rolling bearing 4.
  • the secondary element 3 comprises a flat annular surface 10, turned towards the rear, intended to form a bearing surface for a friction lining of a clutch element, not shown.
  • the secondary element 3 comprises, near its outer edge, pads, not shown, and / or orifices for mounting a cover of the clutch device.
  • each transmission member 14, 15 comprising an elastic blade 100 capable of flexing and transmitting a torque. of rotation between these two elements, the bending of the elastic blade being accompanied by a relative rotation between the primary and secondary movable elements, along the axis of rotation X.
  • the elastic blades 100 are bent around the axis of rotation X .
  • the two transmission members 14, 15 are symmetrical to each other with respect to the axis of rotation X.
  • Each transmission member 14, 15 comprises a fastening portion 13 which is carried by the secondary flywheel 3 by means of a plurality of rivets 77.
  • each elastic blade 100 comprises a bend 18 connecting to the fastening portion 13 The bend 18 has an angle of about 180 ° so that the remainder of the blade 100 surrounds the attachment portion 13 which is closer to the X axis.
  • the elastic blades 100 are arranged to flex, during operation, in a plane perpendicular to the axis of rotation X. Each elastic blade 100 cooperates with a support element 110, integral in rotation with the primary element 2.
  • Each elastic blade 100 has a concave cam surface 101 along its entire length, this concavity being on the side of the axis of rotation X.
  • the bearing element is formed by a cam follower 110.
  • Each elastic blade 100 of the transmission member 14, 15 extends circumferentially about the axis of rotation X, from the attachment portion 13 of the transmission member 14, 15 to a free distal end 102.
  • the cam surface 101 is located on a surface 103 of the blade 100 located radially outside the blade 100.
  • Each cam follower 110 is held in abutment against its respective cam surface and is arranged to roll against said cam surface during relative rotation between the primary and secondary 2 flywheels 3.
  • each cam follower 110 is disposed radially outwardly from its respective cam surface so as to radially maintain the spring blade 100 when subjected to centrifugal force.
  • the cam follower 110 is disposed radially outwardly of the elastic blade
  • This cam follower 110 comprises a roller 23 mounted to rotate on the primary flywheel 2 by means of rolling members 24, such as balls, rollers or needles, so as to reduce the parasitic friction that may occur. assign the depreciation function.
  • the rollers 23 are each carried by a cylindrical rod 25 extending parallel to the axis of rotation X and one end of which is fixed inside a bore 111 formed in the primary flywheel 2.
  • the elastic blades 100 and the rollers 23 are housed in a space provided axially between the primary and secondary 2 flywheels 3.
  • the cam surface 101 is arranged such that, for an angular displacement between the primary element 2 and the secondary element 3 with respect to an angular rest position, the cam follower 110 exerts a bending force on the blade elastic 100 producing a reaction force able to return said primary element 2 and secondary 3 to said angular position of rest.
  • the resilient blades 100 are capable of transmitting a driving torque from the primary flywheel 2 to the secondary flywheel 3 (forward direction) and a resistant torque of the secondary flywheel 3 to the primary flywheel 2 (retro direction). Moreover, the torsional vibrations and the irregularities of torque which are produced by the engine and transmitted by the crankshaft to the primary flywheel 2 are damped by the bending of the elastic blades 100.
  • the transmission members 14, 15 are arranged symmetrically with respect to the axis of rotation.
  • the fixing portion 13 and the elastic blade 100 are formed in one piece, from the same piece.
  • the torsion damper 1 comprises:
  • the primary movable element also called the primary flywheel 2 in rotation with respect to an axis of rotation X, intended to be connected to a torque input element such as a crankshaft,
  • the secondary mobile element still called secondary flywheel 3 in rotation with respect to the axis of rotation X, and movable in rotation relative to the first element with respect to the axis of rotation X, intended to be connected to an output element torque such as a gearbox input shaft,
  • a disengagement device 50 arranged to interrupt the transmission of torque between the torque input member and the torque output member, the disengagement device 50 being actuated to interrupt the torque transmission when the angular displacement between the elements primary 2 and secondary 3, with respect to a relative angular position of rest, reaches a predetermined angle (A).
  • the primary element 2 comprises two components 51 and 52 arranged to rotate together when they are coupled and to be able to rotate relative to each other when they are decoupled.
  • the disengagement device 50 is arranged to separate these two components 51 and 52 to interrupt the transmission of the torque between the primary element 2 and secondary element 3.
  • the two components 51 and 52 are arranged so as to be able to rotate while sliding relative to each other. to the other when decoupled.
  • this sliding generates a friction between the two components 51 and 52 which limits the transmitted torque.
  • the slip is obtained by very brief interruptions in the transmission of the torque, for example of the order of a few milliseconds.
  • the disengaging device 50 is arranged to reduce or eliminate the pressure exerted between the two components 51 and 52.
  • the two components 51 and 52 are arranged to rotate together under the effect of a pressure that keeps them integral when they are coupled.
  • the component 52 is assembled with the hub 5 of the damper 1, and in particular the other component 51 carries the driving ring gear 9.
  • the disengaging device 50 comprises a lever 53 arranged to join and disjoin the two components 51 and 52 depending on the forces exerted on the lever 53.
  • the lever 53 comprises a tongue 54 interposed between the two components 51 and 52.
  • the component 51 comprises a housing 56, substantially annular, and arranged to partially house the other component 52.
  • the component 51 which forms the housing 56 comprises two assembled parts 57 and 58.
  • This housing 56 houses a diaphragm 60, of annular shape, capable of exerting forces on the two components 51 and 52.
  • the tongue 54 is connected to the diaphragm 60.
  • the diaphragm 60 is made of a sheet.
  • the diaphragm 60 is made in one piece with the tongue 54.
  • the diaphragm 60 carries two tabs 54, diametrically opposed and symmetrical by 180 ° rotation.
  • the primary element 2 comprises an anti-rotation member 61 arranged to cooperate with the tongue 54 to prevent it from rotating on this element 2.
  • the anti-rotation member comprises a notch 61 in which the tongue 54 extends.
  • the anti-rotation member is formed on one of the components 51 of the primary element
  • the anti-rotation member 61 is formed on the piece 58, by cutting.
  • the distance between the axis of rotation X and the tongue 54 is smaller than the distance between the anti-rotation member 61 and the axis of rotation X.
  • One of the components 51 has a bearing face 63 and the other of the components 52 has a coupling face 62, the tongue 54 being arranged to bear against these two faces when the components are coupled.
  • the coupling face 62 is formed on one of the two components, this component being arranged to be fixed to the vehicle, in particular to the crankshaft.
  • the bearing faces 63 and coupling 62 are facing each other.
  • the elastic prestressing of the diaphragm makes it possible to press the tongue both on the support face 63 and on the coupling face 62, to couple the two components 51 and 52 in rotation.
  • the tongue 54 bears continuously on the bearing face 63, that the components 51 and 52 are coupled or decoupled.
  • the tongue 54 rests on the coupling face 62 to couple in rotation the two components 51 and 52.
  • the bearing face 63 is arranged on an assembled part 58 of the component 51 which forms the housing 56.
  • the tab 54 moves away from the coupling face 62 to interrupt the torque transmission between the two components.
  • the tongue 54 has a bend 64 resting on the coupling face 62.
  • the tongue 54 has an end portion 65 arranged to be moved axially for its actuation.
  • the transmission member 14 is mounted integral with an actuating member 70, in particular in the form of a washer, and this actuating member 70 is arranged to be able to actuate the lever 53.
  • the actuating member 70 comprises two ramps 71 arranged to cooperate each with the lever 53 corresponding to actuate.
  • the actuating member 70 is in the form of a washer fixed on the secondary element 3.
  • the ramps 71 are formed on an outer edge 72 of this washer and are symmetrical by a 180 ° rotation about the X axis.
  • the outer edge 72 has a side 73 facing the secondary element 3 and this flange 72 is arranged to bear on the tongue 54 via this side 73.
  • the outer edge 72 of the washer has a notch 75 which comes opposite the lever 53 when the damper 1 is in the rest position. This allows the mounting of primary 2 and secondary 3 elements.
  • the washer 70 has openings 76 receiving fastening elements 77 for attaching the washer 70 to the secondary element 3. These fastening elements 77 are arranged to also serve for fixing the transmission members 14 and 15 on the secondary element 3.
  • the blade 100 of the transmission member 14, 15 is arranged at a distance from the lever 153 regardless of the angular position of the blade 100 with respect to the primary element 2.
  • the washer 70 is made from a sheet.
  • the disengaging device 50 is arranged to be actuated when the angular displacement between the primary movable elements 2 and secondary 3 reaches an angle of 50 °, in the forward direction, relative to the relative angular position of rest.
  • the disengagement device 50 is arranged to be actuated when the angular displacement between the primary movable elements 2 and secondary 3 reaches an angle of 25 °, in the retro direction, relative to the relative angular position of rest.
  • the actuation of the disengaging device 50 is done during a relative angular rotation of 5 °.
  • the diaphragm 60 When the lever 53 is actuated, the diaphragm 60 is deformed. During the interruption of the transmission of the torque, the diaphragm 60 exerts an elastic restoring force capable of producing a return of the lever 53 and a bringing together of the two components 51 and 52.
  • the tongue exerts a force on the coupling face 62 to couple the two components 51 and 52. This effort comes in particular from the elasticity of the diaphragm, mounted prestressed between these two components.
  • the actuator axially pulls the tongue towards the blades to decouple the two components 51 and 52.
  • This embodiment is similar to the previous embodiment except for the manner in which the lever is actuated.
  • each transmission member 14, 15 is arranged to be able to actuate the lever 153.
  • Each transmission member 14, 15 comprises an actuating portion 18 which is formed by the bend 18. On a spoke passing through the lever 153, the lever 153 is radially between the blade
  • the elastic blade 100 Before actuation of the disengaging device, the elastic blade 100 is remote from the lever 153, as can be seen in FIG.
  • the tongue has two chamfered edges 155 arranged to cooperate with the bend 18 of the transmission member as can be seen in Figures 8 and 9.
  • the two chamfered edges 155 of each tongue 154 are arranged to cooperate respectively with each of the elbows 18 of the two transmission members 14 and 15.
  • the elbow 18 has a side 157 facing the primary element and this elbow 18 is arranged to come into pressing on the tab 154, via this side 157.
  • the two tabs 154 are connected to a washer 158 at diametrically opposed locations.
  • This washer 158 forms a diaphragm 160 capable of exerting forces on the two components.
  • the tabs 154 and washer 158 can be made from a sheet.
  • the tab 154 exerts a force on the coupling face 162 to couple the two components 51 and 52.
  • the elastic prestressing of the diaphragm allows the tongue to exert a force on both the bearing face 163 and the coupling face 162, to couple the two components 51 and 52 in rotation.
  • the portion of the tongue 154 which exerts a force on the coupling face 162 is radially inside the portion of the tongue 154 which exerts a force on the bearing face 163.
  • the tongue is pushed axially in the opposite direction to the transmission members 14 for decoupling the two components 51 and 52.
  • FIG 11 shows another embodiment of the invention. Elements identical or similar to the elements of the first embodiment illustrated in Figures 1 to 5, have the same reference numeral increased by 200.
  • the primary element 202 includes the two components 252 and 251 arranged to rotate together when coupled and to rotate relative to each other when decoupled.
  • the component 252 is intended to be connected to a crankshaft and is secured to in rotation with an annular support 280 on which is fixed a driving ring gear 209.
  • an annular support 280 on which is fixed a driving ring gear 209.
  • the other 251 of the two components comprises the cam follower 210 arranged to cooperate with the transmission member 214, the transmission member being carried by the secondary element 203.
  • the annular support 280 is an annular support plate.
  • the annular support 280 may comprise at least one stiffener.
  • Each stiffener can be made by axially deforming the annular support, this deformation being performed circumferentially around the axis of rotation, for example by stamping the sheet.
  • This annular support 280 in sheet metal comprises two stiffeners 281 and 282 radially offset.
  • the annular support 280 has two parts 283 and 284 extending perpendicular to the axis of rotation X. These two parts are connected by a third portion 285 cone portion.
  • the first portion 283 extending perpendicular to the axis of rotation X is arranged radially inside the third portion 285.
  • the second portion 284 extending perpendicularly to the axis of rotation X is arranged radially outside the third portion 285.
  • a stiffener 281 connects the third portion 285 of the annular support to the first portion 283 of the annular support and another stiffener 282 connects the third portion 285 of the annular support to the second portion 284 of the annular support.
  • the annular support 280 integral in rotation with the component 252 intended to be connected to the crankshaft, comprises an annular cavity 286 in which is housed at least partially the other 251 of the two components.
  • the annular support 280 and the component 252 intended to be connected to the crankshaft comprise orifices 287 and 208a arranged so that the annular support 280 and this component 252 are able to be fixed together on the crankshaft, with the same fastening screws 208.
  • the component 252 connected to the crankshaft comprises a recess 288 in which is housed the first portion 283 of the annular support extending perpendicularly to the axis of rotation.
  • the annular support comprises a cylindrical radially outer portion 289, extending axially.
  • the ring gear 209 is fixed, for example by welding, on this cylindrical portion 289.

Abstract

The invention relates to a damper (1) comprising: a main movable element (2) intended to be connected to a torque input element, a secondary movable element (3) that is rotatable, relative to the first element, about a rotational axis (X) and intended to be connected to a torque output element, at least one transmission member (14, 15) mounted on either the main or secondary movable element for conjoint rotation, the transmission member comprising a resilient bendable blade capable of transmitting a rotational torque between said two elements, the bending of the resilient blade being accompanied by relative rotation between said two movable elements along the axis (X), and a clutch release device (50) arranged to interrupt transmission of the torque between the torque input element and the torque output element.

Description

Amortisseur de torsion pour dispositif de transmission de couple de véhicule  Torsion damper for vehicle torque transmission device
automobile  automotive
Domaine technique de l'invention L'invention se rapporte à un amortisseur de torsion pour dispositif de transmission de couple, notamment pour automobile, en particulier pour une chaîne de transmission. TECHNICAL FIELD OF THE INVENTION The invention relates to a torsion damper for a torque transmission device, in particular for an automobile, in particular for a transmission chain.
Etat de la technique State of the art
On connaît des amortisseurs de torsion dont les éléments d'entrée et de sortie sont couplés en rotation par des moyens d'amortissement permettant de transmettre un couple et d'amortir les acyclismes de rotation. Les moyens d'amortissement sont généralement des ressorts hélicoïdaux, cintrés, disposés, de façon circonférentielle, dans une chambre annulaire, étanche, qui est formée entre les éléments d'entrée et de sortie. Les ressorts hélicoïdaux sont disposés de sorte que toute rotation d'un desdits volants par rapport à l'autre provoque une compression des ressorts dans un sens ou dans l'autre, qui exerce une force de rappel apte à rappeler lesdits éléments vers une position angulaire relative de repos. Torsional dampers are known whose input and output elements are coupled in rotation by damping means for transmitting a torque and damping rotation acyclisms. The damping means are generally helical, bent, circumferentially disposed springs in an annular, sealed chamber which is formed between the input and output members. The coil springs are arranged so that any rotation of one of said flywheels relative to the other causes compression of the springs in one direction or the other, which exerts a restoring force able to return said elements to an angular position. relative rest.
La raideur d'un tel amortisseur est déterminée en fonction du nombre de ressorts hélicoïdaux qui le composent, de la raideur intrinsèque des ressorts et du diamètre d'implantation des ressorts. Le choix de la raideur de tels amortisseurs de torsion résulte d'un compromis entre l'efficacité de filtration des acyclismes qui augmente lorsque la raideur diminue et la capacité à transmettre le couple moteur maximum sans pour autant que les spires des ressorts viennent en butée les unes contre les autres, qui nécessite une raideur suffisante. L'amortissement proposé par ces amortisseurs n'est pas tout à fait satisfaisant, notamment en raison des frottements importants et il a été proposé également de réaliser des amortisseurs de torsion à lame, comme cela est décrit dans le document FR3000155 qui illustre un amortisseur de torsion comportant deux moyens élastiques d'amortissement formés chacun par une lame élastique montée sur l'élément d'entrée et coopérant avec un suiveur de came monté sur l'élément de sortie. The stiffness of such a damper is determined as a function of the number of helical springs that compose it, the intrinsic stiffness of the springs and the implantation diameter of the springs. The choice of the stiffness of such torsion dampers results from a compromise between filtration efficiency of the acyclisms which increases when the stiffness decreases and the capacity to transmit the maximum engine torque without the fact that the turns of the springs abut the against each other, which requires sufficient stiffness. The damping proposed by these dampers is not entirely satisfactory, particularly because of the high friction and it has also been proposed to realize torsion dampers with a blade, as described in document FR3000155 which illustrates a shock absorber of torsion comprising two resilient damping means each formed by a resilient blade mounted on the input member and cooperating with a cam follower mounted on the output member.
Objet de l'invention Object of the invention
L'invention vise à améliorer ce type d'amortisseur. A cet effet, et selon un premier aspect, l'invention concerne un amortisseur, notamment un amortisseur de torsion destiné à être disposé en aval d'un moteur à combustion d'automobile, notamment dans la chaîne de transmission, l'amortisseur comportant : The invention aims to improve this type of damper. For this purpose, and according to a first aspect, the invention relates to a damper, in particular a torsion damper intended to be disposed downstream of an automobile combustion engine, in particular in the transmission chain, the damper comprising:
- un élément mobile primaire en rotation par rapport à un axe de rotation, destiné à être relié à un élément d'entrée de couple,  a primary movable element rotated relative to an axis of rotation, intended to be connected to a torque input element,
un élément mobile secondaire en rotation par rapport à l'axe de rotation, et mobile en rotation par rapport au premier élément par rapport à l'axe de rotation, destiné à être relié à un élément de sortie de couple,  a movable element secondary in rotation with respect to the axis of rotation, and movable in rotation with respect to the first element relative to the axis of rotation, intended to be connected to a torque output element,
- au moins un organe de transmission monté solidaire en rotation de l'un des éléments mobiles primaire et secondaire, l'organe de transmission comportant une lame élastique capable de fléchir et transmettre un couple de rotation entre ces deux éléments, la flexion de la lame élastique étant accompagnée d'une rotation relative entre les éléments mobiles primaire et secondaire, selon l'axe de rotation,  at least one transmission member mounted integral in rotation with one of the primary and secondary mobile elements, the transmission member comprising an elastic blade capable of flexing and transmitting a torque between these two elements, the bending of the blade elastic being accompanied by a relative rotation between the primary and secondary movable elements, along the axis of rotation,
- un dispositif de débrayage agencé pour interrompre la transmission du couple entre l'élément d'entrée de couple et l'élément de sortie de couple, le dispositif de débrayage étant actionné pour interrompre la transmission du couple lorsque le débattement angulaire entre les éléments mobiles primaire et secondaire, par rapport à une position angulaire relative de repos, dans un sens ou dans l'autre, atteint un angle prédéterminé.  a disengaging device arranged to interrupt the transmission of the torque between the torque input element and the torque output element, the disengagement device being actuated to interrupt the transmission of the torque when the angular displacement between the moving elements primary and secondary, relative to a relative angular position of rest, in one direction or the other, reaches a predetermined angle.
Ainsi, grâce à l'invention, il est possible d'interrompre la transmission du couple en cas de surcouple, ce qui permet notamment de protéger l'organe de transmission susceptible d'être détérioré par ce surcouple. Thus, thanks to the invention, it is possible to interrupt the torque transmission in case of overtorque, which in particular protects the transmission member may be damaged by this overtorque.
De plus, l'interruption de la transmission se déclenche en fonction du débattement angulaire entre les éléments primaire et secondaire, ce qui permet d'avoir un déclenchement plus précis, notamment comparé à un déclenchement basé sur une valeur de couple limite. Cette rupture du couple peut être obtenue dans le sens de transmission direct et le sens rétro. In addition, the interruption of the transmission is triggered according to the angular displacement between the primary and secondary elements, which allows for a more accurate trigger, especially compared to a trigger based on a limit torque value. This breaking of the torque can be obtained in the direction of direct transmission and the retro direction.
De préférence, la lame élastique est agencée pour fléchir, lors du fonctionnement, dans un plan perpendiculaire à l'axe de rotation. De préférence, la lame élastique comporte une extrémité libre agencée pour se déplacer, notamment en partie radialement, lorsque la lame fléchit. Preferably, the elastic blade is arranged to flex, during operation, in a plane perpendicular to the axis of rotation. Preferably, the elastic blade has a free end arranged to move, in particular partly radially, when the blade bends.
De préférence, l'organe de transmission est monté solidaire en rotation de l'un des éléments primaire et secondaire et la lame élastique coopère avec un élément d'appui, solidaire en rotation de l'autre des éléments primaire et secondaire. Preferably, the transmission member is mounted to rotate with one of the primary and secondary elements and the elastic blade cooperates with a bearing element, integral in rotation with the other of the primary and secondary elements.
De préférence, l'élément d'appui est disposé radialement à l'extérieur de la lame élastique. Cela permet de retenir la lame lorsqu'elle est soumise à des efforts centrifuges importants. Preferably, the support element is arranged radially outside the elastic blade. This allows to retain the blade when subjected to significant centrifugal forces.
De préférence, l'organe de transmission comporte une portion de fixation fixée à l'un des éléments primaire et secondaire. Preferably, the transmission member comprises a fixing portion attached to one of the primary and secondary elements.
De préférence, les éléments primaire et secondaire comportent chacun une butée destinées à venir en contact l'une contre l'autre pour limiter le débattement angulaire entre les deux éléments de l'amortisseur, et le dispositif de débrayage est agencé pour interrompre la transmission du couple avant que ces butées entrent en contact. Preferably, the primary and secondary elements each comprise a stop intended to come into contact one against the other to limit the angular displacement between the two elements of the damper, and the disengaging device is arranged to interrupt the transmission of the couple before these stops come into contact.
De préférence, la lame élastique comporte une surface de came. Preferably, the resilient blade has a cam surface.
Si on le souhaite, la surface de came est concave sur toute la longueur, cette concavité étant du côté de Γ axe de rotation. De préférence, l'élément d'appui comporte un suiveur de came. If desired, the cam surface is concave along the entire length, this concavity being on the side of the axis of rotation. Preferably, the support member comprises a cam follower.
De préférence, l'amortisseur est agencé de sorte que le suiveur de came soit maintenu sur la surface de came qui lui est propre même lorsque la transmission du couple est interrompue. Preferably, the damper is arranged so that the cam follower is held on the cam surface of its own even when torque transmission is interrupted.
De préférence la lame élastique de l'organe de transmission s'étend circonférentiellement autour de l'axe de rotation, depuis la portion de fixation de l'organe de transmission jusqu'à l'extrémité distale libre. Avantageusement, la surface de came est située sur une surface de la lame située radialement à l'extérieur de la lame. Preferably the elastic blade of the transmission member extends circumferentially about the axis of rotation, from the attachment portion of the transmission member to the free distal end. Advantageously, the cam surface is located on a surface of the blade located radially outside the blade.
De préférence, le suiveur de came est disposé radialement à l'extérieur de la lame élastique. De préférence, le suiveur de came est un galet monté mobile en rotation sur l'autre des éléments primaire et secondaire. Preferably, the cam follower is disposed radially outwardly of the resilient blade. Preferably, the cam follower is a roller rotatably mounted on the other of the primary and secondary elements.
Avantageusement, la surface de came est agencée de telle sorte que, pour un débattement angulaire entre l'élément primaire et l'élément secondaire par rapport à une position angulaire de repos, le suiveur de came exerce un effort de flexion sur la lame élastique produisant une force de réaction apte à rappeler lesdits éléments primaire et secondaire vers ladite position angulaire de repos. Advantageously, the cam surface is arranged such that, for an angular displacement between the primary element and the secondary element with respect to an angular position of rest, the cam follower exerts a bending force on the elastic blade producing a reaction force able to return said primary and secondary elements to said angular position of rest.
Si on le souhaite, l'amortisseur comporte une pluralité d'organes de transmission, par exemple 2, 3, 4, 5 ou 6. If desired, the damper comprises a plurality of transmission members, for example 2, 3, 4, 5 or 6.
De préférence, les organes de transmission sont disposés de façon symétrique par rapport à l'axe de rotation. Preferably, the transmission members are arranged symmetrically with respect to the axis of rotation.
Dans un autre mode de réalisation de l'invention, l'organe de transmission comporte une pluralité de lames élastiques. In another embodiment of the invention, the transmission member comprises a plurality of resilient blades.
De préférence, les lames élastiques de l'organe de transmission sont symétriques par rapport à l'axe de rotation. Selon un mode de réalisation, la portion de fixation et la lame élastique sont formés d'un seul tenant. Preferably, the elastic blades of the transmission member are symmetrical with respect to the axis of rotation. According to one embodiment, the attachment portion and the resilient blade are integrally formed.
De préférence, l'un au moins des éléments primaire et secondaire comporte deux composants agencés pour tourner ensemble lorsqu'ils sont couplés et pour pouvoir tourner l'un par rapport à l'autre lorsqu'ils sont découplés. Preferably, at least one of the primary and secondary elements comprises two components arranged to rotate together when they are coupled and to be able to rotate relative to each other when decoupled.
De préférence, l'un des éléments primaire et secondaire comporte les deux composants, et l'un de ces composants comprend un moyeu agencé pour supporter et centrer l'autre des éléments primaire et secondaire. De préférence, le dispositif de débrayage est agencé pour disjoindre ces deux composants pour interrompre la transmission du couple entre les éléments primaire et secondaire. Preferably, one of the primary and secondary elements comprises the two components, and one of these components comprises a hub arranged to support and center the other of the primary and secondary elements. Preferably, the disengaging device is arranged to disjoin these two components to interrupt the transmission of torque between the primary and secondary elements.
De préférence, les deux composants sont agencés de manière à pouvoir tourner en glissant l'un par rapport à l'autre lorsqu'ils sont découplés. Preferably, the two components are arranged to be rotatable by sliding relative to each other when decoupled.
Ainsi, ce glissement génère un frottement entre les deux composants qui permet de limiter le couple transmis. Le glissement est obtenu par des interruptions très brèves de la transmission du couple, par exemple de l'ordre de quelques millisecondes.  Thus, this sliding generates a friction between the two components which limits the transmitted torque. The slip is obtained by very brief interruptions in the transmission of the torque, for example of the order of a few milliseconds.
De préférence, le dispositif de débrayage est agencé pour réduire, voire supprimer, la pression qui s'exerce entre les deux composants. Lorsque la pression s 'exerçant entre les deux composants est réduite et que les deux composants glissent l'un par rapport à l'autre lorsqu'ils sont découplés, l'interruption du couple est très brève, c'est-à-dire de l'ordre de quelques millisecondes. Autrement dit, lorsque les deux composants glissent l'un par rapport à l'autre, un frottement intervient entre les deux composants et le dispositif de débrayage se comporte comme un limiteur de couple. Preferably, the disengaging device is arranged to reduce or eliminate the pressure exerted between the two components. When the pressure exerted between the two components is reduced and the two components slide relative to each other when they are decoupled, the torque interruption is very short, that is to say the order of a few milliseconds. In other words, when the two components slide relative to each other, a friction occurs between the two components and the disengaging device behaves as a torque limiter.
Avantageusement, les deux composants sont agencés pour tourner ensemble sous l'effet d'une pression qui les maintient solidaires lorsqu'ils sont couplés. Advantageously, the two components are arranged to rotate together under the effect of a pressure that keeps them integral when they are coupled.
Avantageusement, lorsque l'élément primaire comporte deux composants, l'un des composants est assemblé avec un moyeu de l'amortisseur, et notamment l'autre composant porte une couronne dentée d'entraînement. Advantageously, when the primary element comprises two components, one of the components is assembled with a hub of the damper, and in particular the other component carries a driving ring gear.
De préférence, le dispositif de débrayage comporte un levier agencé pour joindre et disjoindre les deux composants en fonction des efforts exercés sur le levier. Preferably, the disengaging device comprises a lever arranged to join and disjoin the two components as a function of the forces exerted on the lever.
De préférence, le levier comporte au moins une languette interposée entre les deux composants. De préférence, l'un des composants comporte un logement agencé pour loger au moins partiellement l'autre composant. Preferably, the lever comprises at least one tongue interposed between the two components. Preferably, one of the components comprises a housing arranged to at least partially accommodate the other component.
De préférence, le composant qui forme le logement comprend deux pièces assemblées. Preferably, the component that forms the housing comprises two parts assembled.
De préférence, le logement est sensiblement annulaire. Preferably, the housing is substantially annular.
De préférence, ce logement loge un diaphragme capable d'exercer des efforts sur les deux composants. Ces efforts ont notamment pour effet de coupler en rotation ces deux composants. Preferably, this housing houses a diaphragm capable of exerting forces on the two components. These efforts have the effect of coupling in rotation these two components.
De préférence, la languette se raccorde au diaphragme. De préférence, le diaphragme présente une forme annulaire. Preferably, the tongue is connected to the diaphragm. Preferably, the diaphragm has an annular shape.
De préférence, le diaphragme est réalisé dans une tôle. Preferably, the diaphragm is made in a sheet.
De préférence, le diaphragme est réalisé d'un seul tenant avec la languette. Preferably, the diaphragm is made in one piece with the tongue.
De préférence, le diaphragme porte deux languettes, de préférence diamétralement opposées et éventuellement symétriques par une rotation à 180°. Preferably, the diaphragm carries two tabs, preferably diametrically opposed and possibly symmetrical by 180 ° rotation.
De préférence, l'amortisseur comporte autant de languettes que de lames élastiques. Preferably, the damper comprises as many tongues as elastic blades.
Par exemple, l'amortisseur comporte trois lames élastiques régulièrement disposées sur un même plan, à 120° les unes des autres, le diaphragme comporte trois languettes régulièrement disposées sur un même plan, à 120° les unes des autres. For example, the damper comprises three resilient blades regularly arranged on the same plane, at 120 ° from each other, the diaphragm comprises three tongues regularly arranged on the same plane, at 120 ° from each other.
De préférence, l'un des éléments primaires et secondaire comporte un organe anti rotation agencé pour coopérer avec la languette pour l'empêcher de tourner sur cet élément. De préférence, l'organe anti rotation comporte une encoche dans laquelle s'étend la languette. Preferably, one of the primary and secondary elements comprises an anti-rotation member arranged to cooperate with the tongue to prevent it from rotating on this element. Preferably, the anti-rotation member comprises a notch in which the tongue extends.
De préférence, l'organe anti rotation est formé sur l'élément primaire. Preferably, the anti-rotation member is formed on the primary element.
Avantageusement, lorsque l'élément primaire est composé de deux composants, l'organe anti-rotation est formé sur l'un de ces composants. Advantageously, when the primary element is composed of two components, the anti-rotation member is formed on one of these components.
Avantageusement, lorsque le composant qui forme le logement comprend deux pièces assemblées, l'organe anti-rotation est formé sur l'une de ces pièces, notamment par découpe, et notamment la distance entre axe de rotation et la languette est plus petite que la distance entre l'organe anti rotation et l'axe de rotation. Advantageously, when the component that forms the housing comprises two parts assembled, the anti-rotation member is formed on one of these parts, in particular by cutting, and in particular the distance between the axis of rotation and the tongue is smaller than the distance between the anti-rotation member and the axis of rotation.
La languette est en appui en permanence sur une face d'appui, que les composants soient couplés ou découplés. The tongue is permanently supported on a support face, the components are coupled or decoupled.
La languette vient en appui sur une face de couplage pour coupler en rotation les deux composants. La face d'appui est agencée sur l'un des deux composants et la face de coupage est agencée sur l'autre des deux composants. The tab bears on a coupling face to couple in rotation the two components. The bearing face is arranged on one of the two components and the cutting face is arranged on the other of the two components.
La face d'appui et la face de couplage sont en regard l'une de l'autre. La face d' appui et la face de couplage sont disposées dans le logement. The bearing face and the coupling face are opposite one another. The bearing face and the coupling face are arranged in the housing.
Lors de actionnement du levier, la pression exercée par la languette sur la face de couplage diminue pour interrompre la transmission du couple entre les deux composants. Lors de actionnement du levier, la languette s'écarte de la face de couplage pour interrompre la transmission du couple entre les deux composants. Upon actuation of the lever, the pressure exerted by the tongue on the coupling face decreases to interrupt the transmission of torque between the two components. When the lever is actuated, the tab moves away from the coupling face to interrupt the torque transmission between the two components.
De préférence, la languette comporte un coude agencé pour venir en appui contre la face de couplage. De préférence, la languette comporte une portion d'extrémité agencée pour être déplacée axialement pour son actionnement. De préférence, l'un des composants comporte une face d'appui et l'autre des composants comporte une face de couplage, la languette étant agencée pour s'appuyer contre ces deux faces lorsque les composants sont couplés. Preferably, the tongue comprises a bend arranged to abut against the coupling face. Preferably, the tongue comprises an end portion arranged to be moved axially for its actuation. Preferably, one of the components comprises a bearing face and the other of the components comprises a coupling face, the tongue being arranged to bear against these two faces when the components are coupled.
De préférence, lorsque le diaphragme présente une forme annulaire, toute la portion annulaire du diaphragme auquel se raccorde la languette s'appuie de façon annulaire sur les faces d'appui et de couplage lorsque les composants sont couplés. Preferably, when the diaphragm has an annular shape, the entire annular portion of the diaphragm to which the tongue is connected is annularly supported on the bearing and coupling faces when the components are coupled.
Si on le souhaite, la face de couplage est ménagée sur l'un des deux composants, ce composant étant destiné à être fixé au véhicule, notamment à l'élément d'entrée de couple, par exemple au vilebrequin d'un véhicule. If desired, the coupling face is provided on one of the two components, this component being intended to be fixed to the vehicle, in particular to the torque input element, for example to the crankshaft of a vehicle.
De préférence, les faces d'appui et de couplage sont en regard l'une de l'autre. Preferably, the bearing and coupling faces are facing one another.
Avantageusement, la précontrainte élastique du diaphragme permet de faire appuyer la languette à la fois sur la face d'appui et sur la face de couplage, pour coupler les deux composants en rotation. Advantageously, the elastic prestressing of the diaphragm makes it possible to press the tongue both on the bearing face and on the coupling face, in order to couple the two components in rotation.
Avantageusement, la languette est en appui en permanence sur la face d'appui, que les composants soient couplés ou découplés. Advantageously, the tongue is permanently supported on the bearing face, the components are coupled or decoupled.
Avantageusement, la languette s'appuie sur la face de couplage pour coupler en rotation les deux composants. Advantageously, the tongue rests on the coupling face to couple in rotation the two components.
Avantageusement, la face d'appui est agencée sur une pièce assemblée du composant qui forme le logement. Advantageously, the bearing face is arranged on an assembled part of the component which forms the housing.
De préférence, lors de actionnement du levier, la pression exercée par la languette sur la face de couplage diminue pour interrompre la transmission du couple entre les deux composants. Le cas échéant, la languette s'écarte de la face de couplage pour interrompre la transmission du couple entre les deux composants. Le cas échéant, la languette comporte un coude en appui sur la face de couplage. Preferably, during actuation of the lever, the pressure exerted by the tongue on the coupling face decreases to interrupt the transmission of torque between the two components. If necessary, the tab moves away from the coupling face to interrupt the torque transmission between the two components. If necessary, the tongue has a bend bearing on the coupling face.
De préférence, la languette comporte une portion d'extrémité agencée pour être déplacée axialement pour son actionnement. Selon un mode de réalisation de l'invention, l'organe de transmission est solidaire d'un organe d' actionnement, notamment sous la forme d'une rondelle, et cet organe d' actionnement est agencé pour pouvoir actionner le levier. Preferably, the tongue comprises an end portion arranged to be moved axially for its actuation. According to one embodiment of the invention, the transmission member is integral with an actuating member, in particular in the form of a washer, and this actuating member is arranged to be able to actuate the lever.
De préférence, l'organe d' actionnement comporte une rampe agencée pour coopérer avec le levier pour actionner. Preferably, the actuating member comprises a ramp arranged to cooperate with the lever to actuate.
De préférence, l'organe d' actionnement présente la forme d'une rondelle, notamment fixée sur l'élément secondaire. De préférence, les rampes sont formées sur un rebord extérieur de cette rondelle. Preferably, the actuating member is in the form of a washer, in particular fixed on the secondary element. Preferably, the ramps are formed on an outer edge of this washer.
De préférence, le rebord extérieur comporte un côté tourné vers l'élément secondaire et ce rebord est agencé pour venir en appui sur la languette via ce côté. De préférence, le rebord extérieur de la rondelle comporte une encoche qui vient en regard du levier lorsque l'amortisseur est en position de repos. Preferably, the outer edge has a side facing the secondary element and this rim is arranged to bear on the tongue via this side. Preferably, the outer rim of the washer has a notch which comes opposite the lever when the damper is in the rest position.
De préférence, la rondelle comporte des ouvertures recevant des éléments de fixation pour la fixation de la rondelle à l'élément secondaire. Preferably, the washer comprises openings receiving fixing elements for fixing the washer to the secondary element.
De préférence, ces éléments de fixation sont agencés pour également servir à la fixation de l'organe de transmission sur l'élément secondaire. Preferably, these fixing elements are arranged to also serve for fixing the transmission member on the secondary element.
De préférence, la rondelle est réalisée à partir d'une tôle. Selon un mode de réalisation, la lame de l'organe de transmission est agencée à distance du levier quelque soit la position angulaire de la lame par rapport à l'élément primaire. Preferably, the washer is made from a sheet. According to one embodiment, the blade of the transmission member is arranged at a distance from the lever regardless of the angular position of the blade relative to the primary element.
De préférence, le rebord extérieur comporte un premier étage, agencé entre l'encoche et la rampe, le long duquel le levier tourne lorsque le couple est transmis sans glissement entre les deux composants. De préférence, l'angle prédéterminé auquel le dispositif de débrayage se déclenche est choisi en fonction de l'organe de transmission, notamment des contraintes susceptibles d'être supportée(s) par sa ou ses lames. Preferably, the outer flange comprises a first stage, arranged between the notch and the ramp, along which the lever rotates when the torque is transmitted without sliding between the two components. Preferably, the predetermined angle at which the disengagement device is triggered is chosen as a function of the transmission member, including stresses likely to be supported (s) by his or her blades.
De préférence, le dispositif de débrayage est agencé pour être actionné lorsque le débattement angulaire entre les éléments mobiles primaire et secondaire atteint un angle prédéterminé, notamment de 50°, dans le sens direct, par rapport à la position angulaire relative de repos. Preferably, the disengaging device is arranged to be actuated when the angular displacement between the primary and secondary movable elements reaches a predetermined angle, in particular 50 °, in the forward direction, relative to the relative angular position of rest.
De préférence, le dispositif de débrayage est agencé pour être actionné lorsque le débattement angulaire entre les éléments mobiles primaire et secondaire atteint un angle prédéterminé, notamment de 25°, dans le sens rétro, par rapport à la position angulaire relative de repos. Preferably, the disengaging device is arranged to be actuated when the angular displacement between the primary and secondary movable elements reaches a predetermined angle, especially 25 °, in the retro direction, relative to the relative angular position of rest.
Si on le souhaite, l'actionnement du dispositif de débrayage se fait au cours d'une rotation angulaire relative d'un angle prédéterminé, par exemple de 5°. If desired, the disengagement device is actuated during a relative angular rotation by a predetermined angle, for example 5 °.
Avantageusement, lors de l'actionnement du levier, le diaphragme se déforme. Advantageously, when the lever is actuated, the diaphragm deforms.
Avantageusement, lors de l'interruption de la transmission du couple, le diaphragme exerce une force de rappel élastique apte à produire un retour du levier et un rapprochement des deux composants. Avantageusement, la languette exerce un effort sur la face de couplage pour coupler les deux composants. Cet effort provient notamment de l'élasticité du diaphragme, monté précontraint entre ces deux composants. Avantageusement, l'organe d' actionnement tire axialement la languette en direction des lames pour découpler les deux composants. Advantageously, during the interruption of torque transmission, the diaphragm exerts an elastic return force capable of producing a return of the lever and a bringing together of the two components. Advantageously, the tongue exerts a force on the coupling face to couple the two components. This effort comes in particular from the elasticity of the diaphragm, mounted prestressed between these two components. Advantageously, the actuating member axially pulls the tongue towards the blades to decouple the two components.
Selon un autre mode de réalisation, l'organe de transmission est agencé pour pouvoir actionner le levier. According to another embodiment, the transmission member is arranged to operate the lever.
Le cas échéant, l'organe de transmission comporte une portion d' actionnement agencée pour pouvoir venir en appui, notamment directement, contre le levier pour l'actionner. De préférence, l'organe de transmission comporte un coude et cette portion d' actionnement est formée sur ce coude. Where appropriate, the transmission member comprises an actuating portion arranged to be able to bear, particularly directly against the lever to actuate. Preferably, the transmission member comprises a bend and this actuating portion is formed on this bend.
De préférence, le coude de l'organe de transmission raccorde la lame de l'organe de transmission à une portion de fixation de l'organe de transmission. Preferably, the bend of the transmission member connects the blade of the transmission member to a fixing portion of the transmission member.
Avantageusement, sur un rayon passant par le levier, le levier est radialement entre la lame et l'axe de rotation lorsque l'amortisseur est au repos. Advantageously, on a spoke passing through the lever, the lever is radially between the blade and the axis of rotation when the damper is at rest.
De préférence, la languette comporte au moins un bord chanfreiné agencé pour coopérer avec la portion d' actionnement de l'organe de transmission. Preferably, the tongue comprises at least one chamfered edge arranged to cooperate with the actuating portion of the transmission member.
Avantageusement, lorsque l'amortisseur comporte deux organes de transmission, la languette comporte deux bords chanfreinés agencés pour coopérer respectivement avec chacune des portions d' actionnement des deux organes de transmission. Advantageously, when the damper comprises two transmission members, the tongue comprises two chamfered edges arranged to cooperate respectively with each of the actuating portions of the two transmission members.
De préférence, la portion d' actionnement comporte un côté tourné vers l'élément primaire et cette portion d' actionnement et agencé pour venir en appui sur la languette, via ce côté. La languette exerce un effort sur la face de couplage pour coupler les deux composants. Preferably, the actuating portion has a side facing the primary element and this actuating portion and arranged to bear on the tongue, via this side. The tongue exerts a force on the coupling face to couple the two components.
La précontrainte élastique du diaphragme permet à la languette d'exercer un effort à la fois sur la face d'appui et sur la face de couplage, pour coupler les deux composants en rotation. The elastic preload of the diaphragm allows the tongue to exert a force on both the bearing face and the coupling face, to couple the two components in rotation.
La portion de la languette qui exerce un effort sur la face de couplage est radialement à l'intérieur de la portion de la languette qui exerce un effort sur la face d'appui. The portion of the tongue that exerts a force on the coupling face is radially inside the portion of the tongue that exerts a force on the bearing face.
La languette est poussée axialement en direction opposée aux organes de transmission pour découpler les deux composants. The tongue is pushed axially in the opposite direction to the transmission members to decouple the two components.
Selon un mode de réalisation, lorsque l'élément primaire comporte les deux composants agencés pour tourner ensemble lorsqu'ils sont couplés et pour tourner l'un par rapport à l'autre lorsqu'ils sont découplés, l'un des composants est destiné à être relié à l'élément d'entrée de couple et est fixé solidaire en rotation avec un support annulaire sur lequel est fixée une couronne dentée d'entraînement. Ainsi, lors du démarrage, le couple de démarrage venant de la couronne de démarrage transite par le support annulaire et par ce composant jusqu'à l'élément d'entrée de couple sans passer par le dispositif de débrayage. According to one embodiment, when the primary element comprises the two components arranged to rotate together when they are coupled and to rotate relative to one another when they are decoupled, one of the components is intended to it is connected to the torque input element and is secured to rotate with an annular support on which is fixed a drive ring gear. Thus, during startup, the starting torque from the starter ring passes through the annular support and the component to the torque input member without passing through the disengaging device.
Le cas échéant, l'autre des deux composants comporte l'un parmi l'élément d'appui et l'organe de transmission. En particulier, l'autre des deux composants porte un suiveur de came agencé pour coopérer avec l'organe de transmission, l'organe de transmission étant porté par l'élément secondaire. Where appropriate, the other of the two components comprises one of the support member and the transmission member. In particular, the other of the two components carries a cam follower arranged to cooperate with the transmission member, the transmission member being carried by the secondary element.
Si on le souhaite, le support annulaire est un support annulaire en tôle. If desired, the annular support is an annular support sheet.
Le support annulaire peut comporter au moins un raidisseur. Chaque raidisseur peut être réalisé en déformant axiallement le support annulaire, cette déformation étant réalisée circonférentiellement autour de l'axe de rotation, par exemple par emboutissage de la tôle. Si on le souhaite, le support annulaire en tôle comporte deux raidisseurs radialement décalés. Ces deux raidisseurs peuvent être axiallement décalés. The annular support may comprise at least one stiffener. Each stiffener can be made by axially deforming the annular support, this deformation being performed circumferentially around the axis of rotation, for example by stamping the sheet. If desired, the annular sheet metal support comprises two radially offset stiffeners. These two stiffeners can be axially offset.
Le support annulaire peut comporter deux parties s 'étendant perpendiculmairement à l'axe de rotation. Ces deux parties peuvent être reliées par une troisième partie en portion de cône. The annular support may comprise two parts extending perpendicularly to the axis of rotation. These two parts can be connected by a third portion cone portion.
La première partie est agencée radialement à l'intérieur de la troisième partie en portion de cône. The first part is arranged radially inside the third part cone portion.
La seconde partie est agencée radialement à l'extérieur de la troisième partie en portion de cône. The second part is arranged radially outside the third part cone portion.
Un raidisseur relie la troisième partie du support annulaire à la première partie du support annulaire et un autre raidisseur relie la troisième partie du support annulaire à la seconde partie du support annulaire. A stiffener connects the third portion of the annular support to the first portion of the annular support and another stiffener connects the third portion of the annular support to the second portion of the annular support.
Le support annulaire, solidaire en rotation du composant destiné à être relié à l'élément d'entrée de couple, comporte une cavité annulaire dans laquelle est logée au moins partiellement l'autre des deux composants.  The annular support, integral in rotation of the component intended to be connected to the torque input element, comprises an annular cavity in which is housed at least partially the other of the two components.
Le support annulaire et le composant destiné à être relié à l'élément d'entrée de couple comportent des orifices agencés de sorte que le support annulaire et ce composant sont aptes à être fixés ensemble sur l'élément d'entrée de couple, notamment avec des vis de fixation communes. Ainsi, ces vis de fixation servent à la fois au montage de l'amortisseur sur l'élément d'entrée de couple et à l'assemblage du support annulaire avec le composant relié à l'élément d'entrée de couple. The annular support and the component intended to be connected to the torque input element comprise orifices arranged so that the annular support and this component are able to be fixed together on the torque input element, in particular with respect to common fastening screws. Thus, these fixing screws are used both for mounting the damper on the torque input element and for assembling the annular support with the component connected to the torque input element.
Le composant destiné à être relié à l'élément d'entrée de couple comporte un évidement dans lequel est logée la première partie du support annulaire s 'étendant perpendiculairement à l'axe de rotation. The component intended to be connected to the torque input element comprises a recess in which is housed the first portion of the annular support extending perpendicular to the axis of rotation.
Le support annulaire comporte une portion radialement externe cylindrique, s 'étendant axialement. La couronne dentée est fixée, par exemple par soudage, autour de cette portion cylindrique. The annular support comprises a cylindrical radially outer portion, extending axially. The ring gear is fixed, for example by welding, around this cylindrical portion.
L'invention a également pour objet un amortisseur, notamment un amortisseur de torsion destiné à être disposé en aval d'un moteur à combustion d'automobile, notamment dans la chaîne de transmission, l'amortisseur comportant : The invention also relates to a damper, in particular a torsion damper intended to be disposed downstream of an automobile combustion engine, in particular in the transmission chain, the damper comprising:
un élément mobile primaire en rotation par rapport à un axe de rotation, destiné à être relié à un élément d'entrée de couple,  a primary movable element rotating relative to an axis of rotation, intended to be connected to a torque input element,
un élément mobile secondaire en rotation par rapport à l'axe de rotation, et mobile en rotation par rapport au premier élément par rapport à l'axe de rotation, destiné à être relié à un élément de sortie de couple,  a movable element secondary in rotation with respect to the axis of rotation, and movable in rotation with respect to the first element relative to the axis of rotation, intended to be connected to a torque output element,
au moins un organe élastique accouplant les éléments mobiles primaire et secondaire et apte à transmettre un couple de rotation entre ces deux éléments, la déformation de l'organe élastique étant accompagnée d'une rotation relative entre les éléments mobiles primaire et secondaire, selon l'axe de rotation,  at least one resilient member coupling the primary and secondary movable elements and able to transmit a torque between these two elements, the deformation of the elastic member being accompanied by a relative rotation between the primary and secondary movable elements, according to the rotation axis,
un dispositif de débrayage agencé pour interrompre la transmission du couple entre l'élément d'entrée de couple et l'élément de sortie de couple.  a disengaging device arranged to interrupt the transmission of torque between the torque input member and the torque output member.
L'organe élastique peut comporter un ressort hélicoïdal. The elastic member may comprise a helical spring.
L'organe élastique peut comporter organe de transmission à lame monté solidaire de l'un des éléménts mobiles primaire et secondaire et coopérant avec un élément d'appui, monté solidaire de l'autre des éléménts mobiles primaire et secondaire. The resilient member may comprise a blade transmission member mounted integral with one of the primary and secondary mobile elements and cooperating with a support element, mounted integral with the other primary and secondary mobile element éléménts.
Si on le souhaite, le dispositif de débrayage est actionné pour interrompre la transmission du couple lorsque le débattement angulaire entre les éléments mobiles primaire et secondaire, par rapport à une position angulaire relative de repos, dans un sens ou dans l'autre, atteint un angle prédéterminé. If desired, the disengagement device is actuated to interrupt the transmission of the torque when the angular displacement between the primary and secondary movable elements, relative to a relative angular position of rest, in one direction or the other, reaches a predetermined angle.
Le dispositif de débrayage peut comporter une ou plusieurs des caractéristqiues pré -citées. The disengaging device may comprise one or more of the aforementioned characteristics.
Si on le souhaite, lorsque l'élément primaire comporte les deux composants agencés pour tourner ensemble lorsqu'ils sont couplés et pour tourner l'un par rapport à l'autre lorsqu'ils sont découplés, l'un des composants est destiné à être relié à l'élément d'entrée de couple et est fixé solidaire en rotation avec un support annulaire sur lequel est fixé une couronne dentée d'entraînement. Ainsi, lors du démarrage, le couple de démarrage venant de la couronne de démarrage transite par le support annulaire et par ce composant jusqu'à l'élément d'entrée de couple sans passer par le dispositif de débrayage. Le support annulaire peut comporter une ou plusieurs des caractéristqiues précitées. If desired, when the primary element comprises the two components arranged to rotate together when they are coupled and to rotate relative to each other when decoupled, one of the components is intended to be connected to the torque input element and is secured to rotate with an annular support on which is fixed a driving ring gear. Thus, during startup, the starting torque from the starter ring passes through the annular support and the component to the torque input member without passing through the disengaging device. The annular support may comprise one or more of the aforementioned features.
L'invention sera mieux comprise, et d'autres buts, détails, caractéristiques et avantages de celle-ci apparaîtront plus clairement au cours de la description suivante de plusieurs modes de réalisation particuliers de l'invention, donnés uniquement à titre illustratif et non limitatif, en référence aux dessins annexés. The invention will be better understood, and other objects, details, characteristics and advantages thereof will appear more clearly in the course of the following description of several particular embodiments of the invention, given solely for illustrative and non-limiting purposes. with reference to the accompanying drawings.
Sur ces dessins : On these drawings:
La figure 1 est une vue de face, schématique et partielle, d'un amortisseur selon un premier mode de réalisation de l'invention. Figure 1 is a front view, schematic and partial, of a damper according to a first embodiment of the invention.
La figure 2 est une vue en coupe selon H-H, schématique et partielle, de l'amortisseur de la figure 1.  FIG. 2 is a schematic and partial sectional view along H-H of the damper of FIG. 1.
La figure 3 est une vue en perspective, schématique et partielle, de Γ amortisseur de la figure 1, sans l'organe de transmission et sans l'élément secondaire.  Figure 3 is a schematic and partial perspective view of the damper of Figure 1, without the transmission member and without the secondary element.
- La figure 4 est une vue en perspective, schématique et partielle, de Γ amortisseur de la figure 3, avec l'organe de transmission et sans l'élément secondaire.  FIG. 4 is a diagrammatic and partial perspective view of the shock absorber of FIG. 3, with the transmission member and without the secondary element.
La figure 5 représente isolément en perspective, de manière schématique et partielle, l'organe d' actionnement de la figure 1.  FIG. 5 represents in isolation, schematically and partially, the actuating member of FIG. 1.
La figure 6 est une vue de face, schématique et partielle, d'un amortisseur selon un second mode de réalisation.  Figure 6 is a front view, schematic and partial, of a damper according to a second embodiment.
La figure 7 est une vue en coupe selon G-G, schématique et partielle, de l'amortisseur de la figure 6.  FIG. 7 is a schematic and partial sectional view along G-G of the damper of FIG. 6.
La figure 8 est une vue de face, schématique et partielle, de l'amortisseur de la figure 6 dans une deuxième position angulaire relative des éléments primaire et secondaire.  Figure 8 is a front view, schematic and partial, of the damper of Figure 6 in a second relative angular position of the primary and secondary elements.
La figure 9 est une vue en coupe selon H-H, schématique et partielle, de l'amortisseur de la figure 8. La figure 10 représente isolément en perspective, de manière schématique et partielle, le levier de la figure 6. FIG. 9 is a schematic and partial sectional view along HH of the damper of FIG. 8. FIG. 10 represents in isolation, in a schematic and partial manner, the lever of FIG.
La figure 11 représente une vue en coupe d'un autre mode de réalisation.  Fig. 11 shows a sectional view of another embodiment.
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 du double volant amortisseur. Par convention, l'orientation "radiale" est dirigée orthogonalement à l'axe X de rotation du double volant amortisseur déterminant l'orientation "axiale" et, de l'intérieur vers l'extérieur en s'éloignant dudit axe X, l'orientation "circonférentielle" est dirigée orthogonalement à l'axe X de rotation du double volant amortisseur et sensiblement perpendiculaire à la direction radiale. Le terme « circonférentiellement » est utilisé ici pour décrire une trajectoire courbe, circulaire ou non, autour de l'axe de rotation, et ne renvoie pas ici nécessairement à une courbe fermée. Les termes "externe" et "interne" sont utilisés pour définir la position relative d'un élément par rapport à un autre, par référence à l'axe X de rotation du double volant amortisseur, un élément proche de l'axe est ainsi qualifié d'interne par opposition à un élément externe situé radialement en périphérie. 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 double damping flywheel. By convention, the "radial" orientation is directed orthogonally to the X axis of rotation of the double damping flywheel determining the "axial" orientation and, from the inside towards the outside away from said axis X, the "Circumferential" orientation is directed orthogonally to the X axis of rotation of the double damping flywheel and substantially perpendicular to the radial direction. The term "circumferentially" is used here to describe a curved path, circular or otherwise, around the axis of rotation, and does not necessarily refer to a closed curve here. The terms "external" and "internal" are used to define the relative position of one element relative to another, with reference to the axis X of rotation of the double damping flywheel, an element close to the axis is thus qualified. internally as opposed to an outer member located radially peripherally.
On a représenté sur les figures 1 et 2 un amortisseur 1 formant un double volant amortisseur. L' amortisseur 1 comprend un élément primaire 2, formant un volant d'inertie primaire destiné à être fixé au bout d'un vilebrequin d'un moteur à combustion interne, non représenté, et un élément secondaire 3 formant un volant d'inertie secondaire qui est centré et guidé sur le volant primaire 2 au moyen d'un palier 4, tel qu'un palier à roulement à billes. L'élément secondaire 3 est destiné à former le plateau de réaction d'un embrayage, non représenté, relié à l'arbre d'entrée d'une boîte de vitesses. FIGS. 1 and 2 show a damper 1 forming a double damping flywheel. The damper 1 comprises a primary element 2, forming a primary flywheel intended to be fixed at the end of a crankshaft of an internal combustion engine, not shown, and a secondary element 3 forming a secondary flywheel which is centered and guided on the primary flywheel 2 by means of a bearing 4, such as a rolling bearing ball. The secondary element 3 is intended to form the reaction plate of a clutch, not shown, connected to the input shaft of a gearbox.
L'élément primaire 2 comporte un moyeu 5 radialement interne supportant le palier 4, une portion annulaire 6 s 'étendant radialement depuis le moyeu 5 et une jupe cylindrique 7 s'étendant axialement, vers l'arrière. L'élément primaire 2 est pourvu d'orifices 8a permettant le passage de vis de fixation 8, destinées à la fixation de l'élément primaire 2 sur le vilebrequin du moteur. L'élément primaire 2 porte, sur sa périphérie extérieure, une couronne dentée 9 pour l'entraînement en rotation de l'élément primaire 2, à l'aide d'un démarreur. Le palier à roulement 4 comporte une bague externe, une bague interne et des corps roulants 4a s'étendant entre lesdites bagues interne et externe. The primary element 2 comprises a radially inner hub 5 supporting the bearing 4, an annular portion 6 extending radially from the hub 5 and a cylindrical skirt 7 extending axially towards the rear. The primary element 2 is provided with orifices 8a allowing the passage of fastening screws 8, for fixing the primary element 2 on the crankshaft of the engine. The primary element 2 carries, on its outer periphery, a ring gear 9 for driving in rotation of the primary element 2, using a starter. The rolling bearing 4 comprises an outer ring, an inner ring and rolling bodies 4a extending between said inner and outer rings.
L'élément secondaire 3 comporte sur sa périphérie interne un épaulement 3a servant à l'appui de la bague externe du palier à roulement 4. The secondary element 3 has on its inner periphery a shoulder 3a serving to support the outer ring of the rolling bearing 4.
L'élément secondaire 3 comporte une surface annulaire plane 10, tournée vers l'arrière, destinée à former une surface d'appui pour une garniture de friction d'un élément d'embrayage, non représenté. L'élément secondaire 3 comporte, à proximité de son bord externe, des plots, non représentés, et/ou des orifices servant au montage d'un couvercle du dispositif d'embrayage. The secondary element 3 comprises a flat annular surface 10, turned towards the rear, intended to form a bearing surface for a friction lining of a clutch element, not shown. The secondary element 3 comprises, near its outer edge, pads, not shown, and / or orifices for mounting a cover of the clutch device.
En relation avec la figure 2 et 4, l'on observe deux organes de transmission 14 et 15 montés solidaire en rotation de l'élément secondaire 3, chaque organe de transmission 14,15 comportant une lame élastique 100 capable de fléchir et transmettre un couple de rotation entre ces deux éléments, la flexion de la lame élastique étant accompagnée d'une rotation relative entre les éléments mobiles primaire et secondaire, selon l'axe de rotation X. Les lames élastiques 100 sont recourbées autour de l'axe de rotation X. With reference to FIGS. 2 and 4, two transmission members 14 and 15 are seen to be mounted integral in rotation with the secondary element 3, each transmission member 14, 15 comprising an elastic blade 100 capable of flexing and transmitting a torque. of rotation between these two elements, the bending of the elastic blade being accompanied by a relative rotation between the primary and secondary movable elements, along the axis of rotation X. The elastic blades 100 are bent around the axis of rotation X .
Les deux organes de transmission 14, 15 sont symétriques l'un à l'autre par rapport à l'axe de rotation X. The two transmission members 14, 15 are symmetrical to each other with respect to the axis of rotation X.
Chaque organe de transmission 14, 15 comporte une portion de fixation 13 qui est portée par le volant secondaire 3 au moyen d'une pluralité de rivets 77. Par ailleurs, chaque lame élastique 100 comporte un coude 18 se raccordant à la portion de fixation 13. Le coude 18 présente un angle d'environ 180° de sorte que le reste de la lame 100 entoure la portion de fixation 13 qui est plus proche de l'axe X. Each transmission member 14, 15 comprises a fastening portion 13 which is carried by the secondary flywheel 3 by means of a plurality of rivets 77. Moreover, each elastic blade 100 comprises a bend 18 connecting to the fastening portion 13 The bend 18 has an angle of about 180 ° so that the remainder of the blade 100 surrounds the attachment portion 13 which is closer to the X axis.
Les lames élastiques 100 sont agencées pour fléchir, lors du fonctionnement, dans un plan perpendiculaire à l'axe de rotation X. Chaque lame élastique 100 coopère avec un élément d'appui 110, solidaire en rotation de l'élément primaire 2. The elastic blades 100 are arranged to flex, during operation, in a plane perpendicular to the axis of rotation X. Each elastic blade 100 cooperates with a support element 110, integral in rotation with the primary element 2.
Chaque lame élastique 100 comporte une surface de came 101 concave sur toute sa longueur, cette concavité étant du côté de l'axe de rotation X. L'élément d'appui est formé par un suiveur de came 110. Each elastic blade 100 has a concave cam surface 101 along its entire length, this concavity being on the side of the axis of rotation X. The bearing element is formed by a cam follower 110.
Chaque lame élastique 100 de l'organe de transmission 14, 15 s'étend circonférentiellement autour de l'axe de rotation X, depuis la portion de fixation 13 de l'organe de transmission 14, 15 jusqu'à une extrémité distale libre 102. Each elastic blade 100 of the transmission member 14, 15 extends circumferentially about the axis of rotation X, from the attachment portion 13 of the transmission member 14, 15 to a free distal end 102.
La surface de came 101 est située sur une surface 103 de la lame 100 située radialement à l'extérieur de la lame 100. The cam surface 101 is located on a surface 103 of the blade 100 located radially outside the blade 100.
Chaque suiveur de came 110 est maintenu en appui contre sa surface de came respective et est agencé pour rouler contre ladite surface de came lors d'une rotation relative entre les volants primaire 2 et secondaire 3. Each cam follower 110 is held in abutment against its respective cam surface and is arranged to roll against said cam surface during relative rotation between the primary and secondary 2 flywheels 3.
Par ailleurs, chaque suiveur de came 110 est disposé radialement à l'extérieur de sa surface de came respective de sorte à maintenir radialement la lame élastique 100 lorsqu'elle est soumise à la force centrifuge. Furthermore, each cam follower 110 is disposed radially outwardly from its respective cam surface so as to radially maintain the spring blade 100 when subjected to centrifugal force.
Le suiveur de came 110 est disposé radialement à l'extérieur de la lame élastiqueThe cam follower 110 is disposed radially outwardly of the elastic blade
100. 100.
Ce suiveur de came 110 comporte un galet 23 monté mobile en rotation sur le volant primaire 2 par l'intermédiaire d'organes de roulement 24, tel que des billes, des rouleaux ou des aiguilles, de façon à réduire les frottements parasitaires susceptibles d'affecter la fonction d'amortissement. Les galets 23 sont chacun portés par une tige cylindrique 25 s'étendant parallèlement à l'axe de rotation X et dont une extrémité est fixée à l'intérieur d'un alésage 111 ménagé dans le volant primaire 2. This cam follower 110 comprises a roller 23 mounted to rotate on the primary flywheel 2 by means of rolling members 24, such as balls, rollers or needles, so as to reduce the parasitic friction that may occur. assign the depreciation function. The rollers 23 are each carried by a cylindrical rod 25 extending parallel to the axis of rotation X and one end of which is fixed inside a bore 111 formed in the primary flywheel 2.
Les lames élastiques 100 et les galets 23 sont logés dans un espace ménagé axialement entre les volants primaire 2 et secondaire 3. La surface de came 101 est agencée de telle sorte que, pour un débattement angulaire entre l'élément primaire 2 et l'élément secondaire 3 par rapport à une position angulaire de repos, le suiveur de came 110 exerce un effort de flexion sur la lame élastique 100 produisant une force de réaction apte à rappeler lesdits éléments primaire 2 et secondaire 3 vers ladite position angulaire de repos. The elastic blades 100 and the rollers 23 are housed in a space provided axially between the primary and secondary 2 flywheels 3. The cam surface 101 is arranged such that, for an angular displacement between the primary element 2 and the secondary element 3 with respect to an angular rest position, the cam follower 110 exerts a bending force on the blade elastic 100 producing a reaction force able to return said primary element 2 and secondary 3 to said angular position of rest.
Ainsi, les lames élastiques 100 sont aptes à transmettre un couple entraînant du volant primaire 2 vers le volant secondaire 3 (sens direct) et un couple résistant du volant secondaire 3 vers le volant primaire 2 (sens rétro). Par ailleurs, les vibrations de torsion et les irrégularités de couple qui sont produites par le moteur et transmises par le vilebrequin au volant primaire 2 sont amorties par la flexion des lames élastiques 100.  Thus, the resilient blades 100 are capable of transmitting a driving torque from the primary flywheel 2 to the secondary flywheel 3 (forward direction) and a resistant torque of the secondary flywheel 3 to the primary flywheel 2 (retro direction). Moreover, the torsional vibrations and the irregularities of torque which are produced by the engine and transmitted by the crankshaft to the primary flywheel 2 are damped by the bending of the elastic blades 100.
Les organes de transmission 14, 15 sont disposés de façon symétrique par rapport à l'axe de rotation. The transmission members 14, 15 are arranged symmetrically with respect to the axis of rotation.
La portion de fixation 13 et la lame élastique 100 sont formées d'un seul tenant, à partir d'une même pièce. L'amortisseur de torsion 1 comporte : The fixing portion 13 and the elastic blade 100 are formed in one piece, from the same piece. The torsion damper 1 comprises:
L'élément mobile primaire encore appelé volant primaire 2 en rotation par rapport à un axe de rotation X, destiné à être relié à un élément d'entrée de couple tel qu'un vilebrequin,  The primary movable element, also called the primary flywheel 2 in rotation with respect to an axis of rotation X, intended to be connected to a torque input element such as a crankshaft,
L' élément mobile secondaire encore appelé volant secondaire 3 en rotation par rapport à l'axe de rotation X, et mobile en rotation par rapport au premier élément par rapport à l'axe de rotation X, destiné à être relié à un élément de sortie de couple tel que un arbre d'entrée de boite de vitesse,  The secondary mobile element still called secondary flywheel 3 in rotation with respect to the axis of rotation X, and movable in rotation relative to the first element with respect to the axis of rotation X, intended to be connected to an output element torque such as a gearbox input shaft,
les organes de transmission 14, 15 ,  the transmission members 14, 15,
un dispositif de débrayage 50 agencé pour interrompre la transmission du couple entre l'élément d'entrée de couple et l'élément de sortie de couple, le dispositif de débrayage 50 étant actionné pour interrompre la transmission du couple lorsque le débattement angulaire entre les éléments mobiles primaire 2 et secondaire 3, par rapport à une position angulaire relative de repos, atteint un angle prédéterminé (A). L'élément primaire 2 comporte deux composants 51 et 52 agencés pour tourner ensemble lorsqu'ils sont couplés et pour pouvoir tourner l'un par rapport à l'autre lorsqu'ils sont découplés. Le dispositif de débrayage 50 est agencé pour disjoindre ces deux composants 51 et 52 pour interrompre la transmission du couple entre les éléments primaire 2 et secondaire 3. Les deux composants 51 et 52 sont agencés de manière à pouvoir tourner en glissant l'un par rapport à l'autre lorsqu'ils sont découplés. a disengagement device 50 arranged to interrupt the transmission of torque between the torque input member and the torque output member, the disengagement device 50 being actuated to interrupt the torque transmission when the angular displacement between the elements primary 2 and secondary 3, with respect to a relative angular position of rest, reaches a predetermined angle (A). The primary element 2 comprises two components 51 and 52 arranged to rotate together when they are coupled and to be able to rotate relative to each other when they are decoupled. The disengagement device 50 is arranged to separate these two components 51 and 52 to interrupt the transmission of the torque between the primary element 2 and secondary element 3. The two components 51 and 52 are arranged so as to be able to rotate while sliding relative to each other. to the other when decoupled.
Ainsi, ce glissement génère un frottement entre les deux composants 51 et 52 qui permet de limiter le couple transmis. Le glissement est obtenu par des interruptions très brèves de la transmission du couple, par exemple de l'ordre de quelques millisecondes.  Thus, this sliding generates a friction between the two components 51 and 52 which limits the transmitted torque. The slip is obtained by very brief interruptions in the transmission of the torque, for example of the order of a few milliseconds.
Le dispositif de débrayage 50 est agencé pour réduire, voire supprimer, la pression qui s'exerce entre les deux composants 51 et 52. The disengaging device 50 is arranged to reduce or eliminate the pressure exerted between the two components 51 and 52.
Les deux composants 51 et 52 sont agencés pour tourner ensemble sous l'effet d'une pression qui les maintient solidaire lorsqu'ils sont couplés. The two components 51 and 52 are arranged to rotate together under the effect of a pressure that keeps them integral when they are coupled.
Le composant 52 est assemblé avec le moyeu 5 de l'amortisseur 1, et notamment l'autre composant 51 porte la couronne dentée d'entraînement 9. Le dispositif de débrayage 50 comporte un levier 53 agencé pour joindre et disjoindre les deux composants 51 et 52 en fonction des efforts exercés sur le levier 53. The component 52 is assembled with the hub 5 of the damper 1, and in particular the other component 51 carries the driving ring gear 9. The disengaging device 50 comprises a lever 53 arranged to join and disjoin the two components 51 and 52 depending on the forces exerted on the lever 53.
Comme on peut le voir, notamment sur la figure 3, le levier 53 comporte une languette 54 interposée entre les deux composants 51 et 52. As can be seen, particularly in FIG. 3, the lever 53 comprises a tongue 54 interposed between the two components 51 and 52.
Comme illustré sur la figure 2, le composant 51 comporte un logement 56, sensiblement annulaire, et agencé pour loger partiellement l'autre composant 52. As illustrated in FIG. 2, the component 51 comprises a housing 56, substantially annular, and arranged to partially house the other component 52.
Le composant 51 qui forme le logement 56 comprend deux pièces assemblées 57 et 58. The component 51 which forms the housing 56 comprises two assembled parts 57 and 58.
Ce logement 56 loge un diaphragme 60, de forme annulaire, capable d'exercer des efforts sur les deux composants 51 et 52. La languette 54 se raccorde au diaphragme 60. This housing 56 houses a diaphragm 60, of annular shape, capable of exerting forces on the two components 51 and 52. The tongue 54 is connected to the diaphragm 60.
Le diaphragme 60 est réalisé dans une tôle. Le diaphragme 60 est réalisé d'un seul tenant avec la languette 54. The diaphragm 60 is made of a sheet. The diaphragm 60 is made in one piece with the tongue 54.
Le diaphragme 60 porte deux languettes 54, diamétralement opposées et symétriques par une rotation à 180°. Comme illustré sur la figure 3, l'élément primaire 2 comporte un organe anti rotation 61 agencé pour coopérer avec la languette 54 pour l'empêcher de tourner sur cet élément 2. The diaphragm 60 carries two tabs 54, diametrically opposed and symmetrical by 180 ° rotation. As illustrated in FIG. 3, the primary element 2 comprises an anti-rotation member 61 arranged to cooperate with the tongue 54 to prevent it from rotating on this element 2.
L'organe anti rotation comporte une encoche 61 dans laquelle s'étend la languette 54. The anti-rotation member comprises a notch 61 in which the tongue 54 extends.
L'organe anti-rotation est formé sur l'un des composants 51 de l'élément primaireThe anti-rotation member is formed on one of the components 51 of the primary element
2. En particulier, l'organe anti-rotation 61 est formé sur la pièce 58, par découpe. La distance entre l'axe de rotation X et la languette 54 est plus petite que la distance entre l'organe anti rotation 61 et l'axe de rotation X. 2. In particular, the anti-rotation member 61 is formed on the piece 58, by cutting. The distance between the axis of rotation X and the tongue 54 is smaller than the distance between the anti-rotation member 61 and the axis of rotation X.
L'un des composants 51 comporte une face d'appui 63 et l'autre des composants 52 comporte une face de couplage 62, la languette 54 étant agencée pour s'appuyer contre ces deux faces lorsque les composants sont couplés. One of the components 51 has a bearing face 63 and the other of the components 52 has a coupling face 62, the tongue 54 being arranged to bear against these two faces when the components are coupled.
La face de couplage 62 est ménagée sur l'un 51 des deux composants, ce composant étant agencé pour être fixé au véhicule, notamment au vilebrequin. The coupling face 62 is formed on one of the two components, this component being arranged to be fixed to the vehicle, in particular to the crankshaft.
Les faces d'appui 63 et de couplage 62 sont en regard l'une de l'autre. La précontrainte élastique du diaphragme permet de plaquer la languette à la fois sur la face d'appui 63 et sur la face de couplage 62, pour coupler les deux composants 51 et 52 en rotation. La languette 54 est en appui en permanence sur la face d'appui 63, que les composants 51 et 52 soient couplés ou découplés. The bearing faces 63 and coupling 62 are facing each other. The elastic prestressing of the diaphragm makes it possible to press the tongue both on the support face 63 and on the coupling face 62, to couple the two components 51 and 52 in rotation. The tongue 54 bears continuously on the bearing face 63, that the components 51 and 52 are coupled or decoupled.
La languette 54 s'appuie sur la face de couplage 62 pour coupler en rotation les deux composants 51 et 52. The tongue 54 rests on the coupling face 62 to couple in rotation the two components 51 and 52.
La face d'appui 63 est agencée sur une pièce assemblée 58 du composant 51 qui forme le logement 56. The bearing face 63 is arranged on an assembled part 58 of the component 51 which forms the housing 56.
Lors de actionnement du levier, la pression exercée par la languette 54 sur la face de couplage 62 diminue pour interrompre la transmission du couple entre les deux composants. Upon actuation of the lever, the pressure exerted by the tongue 54 on the coupling face 62 decreases to interrupt the transmission of torque between the two components.
La languette 54 s'écarte de la face de couplage 62 pour interrompre la transmission du couple entre les deux composants. The tab 54 moves away from the coupling face 62 to interrupt the torque transmission between the two components.
La languette 54 comporte un coude 64 en appui sur la face de couplage 62. The tongue 54 has a bend 64 resting on the coupling face 62.
La languette 54 comporte une portion d'extrémité 65 agencée pour être déplacée axialement pour son actionnement. The tongue 54 has an end portion 65 arranged to be moved axially for its actuation.
Comme on le voit sur les figures 4 et 5, l'organe de transmission 14 est monté solidaire d'un organe d' actionnement 70, notamment sous la forme d'une rondelle, et cet organe d' actionnement 70 est agencé pour pouvoir actionner le levier 53. L'organe d' actionnement 70 comporte deux rampes 71 agencées pour coopérer chacune avec le levier 53 correspondant pour l'actionner. As can be seen in FIGS. 4 and 5, the transmission member 14 is mounted integral with an actuating member 70, in particular in the form of a washer, and this actuating member 70 is arranged to be able to actuate the lever 53. The actuating member 70 comprises two ramps 71 arranged to cooperate each with the lever 53 corresponding to actuate.
L'organe d' actionnement 70 présente la forme d'une rondelle fixée sur l'élément secondaire 3. Les rampes 71 sont formées sur un rebord extérieur 72 de cette rondelle et sont symétrique par une rotation à 180° autour de l'axe X. Le rebord extérieur 72 comporte un côté 73 tourné vers l'élément secondaire 3 et ce rebord 72 est agence pour venir en appui sur la languette 54 via ce côté 73. The actuating member 70 is in the form of a washer fixed on the secondary element 3. The ramps 71 are formed on an outer edge 72 of this washer and are symmetrical by a 180 ° rotation about the X axis. The outer edge 72 has a side 73 facing the secondary element 3 and this flange 72 is arranged to bear on the tongue 54 via this side 73.
Le rebord extérieur 72 de la rondelle comporte une encoche 75 qui vient en regard du levier 53 lorsque l'amortisseur 1 est en position de repos. Ceci permet le montage des éléments primaire 2 et secondaire 3. The outer edge 72 of the washer has a notch 75 which comes opposite the lever 53 when the damper 1 is in the rest position. This allows the mounting of primary 2 and secondary 3 elements.
La rondelle 70 comporte des ouvertures 76 recevant des éléments de fixation 77 pour la fixation de la rondelle 70 à l'élément secondaire 3. Ces éléments de fixation 77 sont agencés pour également servir à la fixation des organes de transmission 14 et 15 sur l'élément secondaire 3. The washer 70 has openings 76 receiving fastening elements 77 for attaching the washer 70 to the secondary element 3. These fastening elements 77 are arranged to also serve for fixing the transmission members 14 and 15 on the secondary element 3.
La lame 100 de l'organe de transmission 14, 15 est agencée à distance du levier 153 quelque soit la position angulaire de la lame 100 par rapport à l'élément primaire 2. The blade 100 of the transmission member 14, 15 is arranged at a distance from the lever 153 regardless of the angular position of the blade 100 with respect to the primary element 2.
La rondelle 70 est réalisée à partir d'une tôle. The washer 70 is made from a sheet.
Le dispositif de débrayage 50 est agencé pour être actionné lorsque le débattement angulaire entre les éléments mobiles primaire 2 et secondaire 3 atteint un angle de 50°, dans le sens direct, par rapport à la position angulaire relative de repos. The disengaging device 50 is arranged to be actuated when the angular displacement between the primary movable elements 2 and secondary 3 reaches an angle of 50 °, in the forward direction, relative to the relative angular position of rest.
Le dispositif de débrayage 50 est agencé pour être actionné lorsque le débattement angulaire entre les éléments mobiles primaire 2 et secondaire 3 atteint un angle de 25°, dans le sens rétro, par rapport à la position angulaire relative de repos. The disengagement device 50 is arranged to be actuated when the angular displacement between the primary movable elements 2 and secondary 3 reaches an angle of 25 °, in the retro direction, relative to the relative angular position of rest.
L'actionnement du dispositif de débrayage 50 se fait au cours d'une rotation angulaire relative de 5°. The actuation of the disengaging device 50 is done during a relative angular rotation of 5 °.
Lors de l'actionnement du levier 53, le diaphragme 60 se déforme. Lors de l'interruption de la transmission du couple, le diaphragme 60 exerce une force de rappel élastique apte à produire un retour du levier 53 et un rapprochement des deux composants 51 et 52. When the lever 53 is actuated, the diaphragm 60 is deformed. During the interruption of the transmission of the torque, the diaphragm 60 exerts an elastic restoring force capable of producing a return of the lever 53 and a bringing together of the two components 51 and 52.
La languette exerce un effort sur la face de couplage 62 pour coupler les deux composants 51 et 52. Cet effort provient notamment de l'élasticité du diaphragme, monté précontraint entre ces deux composants. L'organe d' actionnement tire axialement la languette en direction des lames pour découpler les deux composants 51 et 52. The tongue exerts a force on the coupling face 62 to couple the two components 51 and 52. This effort comes in particular from the elasticity of the diaphragm, mounted prestressed between these two components. The actuator axially pulls the tongue towards the blades to decouple the two components 51 and 52.
On va maintenant décrire en référence aux figures 6 à 10 un second mode de réalisation de l'invention. A second embodiment of the invention will now be described with reference to FIGS.
Ce mode de réalisation est similaire au mode de réalisation précédent, à l'exception de la manière dont le levier est actionné. This embodiment is similar to the previous embodiment except for the manner in which the lever is actuated.
Dans l'exemple décrit, chaque organe de transmission 14, 15 est agencé pour pouvoir actionner le levier 153. In the example described, each transmission member 14, 15 is arranged to be able to actuate the lever 153.
Chaque organe de transmission 14, 15 comporte une portion d' actionnement 18 qui est formée par le coude 18. Sur un rayon passant par le levier 153, le levier 153 est radialement entre la lameEach transmission member 14, 15 comprises an actuating portion 18 which is formed by the bend 18. On a spoke passing through the lever 153, the lever 153 is radially between the blade
100 et l'axe de rotation X lorsque l'amortisseur est au repos. 100 and the axis of rotation X when the shock absorber is at rest.
Avant actionnement du dispositif de débrayage, la lame élastique 100 est distante du levier 153, comme on peut le voir sur la figure 7. Before actuation of the disengaging device, the elastic blade 100 is remote from the lever 153, as can be seen in FIG.
La languette comporte deux bords chanfreinés 155 agencés pour coopérer avec le coude 18 de l'organe de transmission comme on peut le voir sur les figures 8 et 9. Les deux bords chanfreinés 155 de chaque languette 154 sont agencés pour coopérer respectivement avec chacun des coudes 18 des deux organes de transmission 14 et 15. Le coude 18 comporte un côté 157 tourné vers l'élément primaire et ce coude 18 est agencé pour venir en appui sur la languette 154, via ce côté 157. The tongue has two chamfered edges 155 arranged to cooperate with the bend 18 of the transmission member as can be seen in Figures 8 and 9. The two chamfered edges 155 of each tongue 154 are arranged to cooperate respectively with each of the elbows 18 of the two transmission members 14 and 15. The elbow 18 has a side 157 facing the primary element and this elbow 18 is arranged to come into pressing on the tab 154, via this side 157.
Comme on peut le voir sur la figure 10, les deux languettes 154 se raccordent à une rondelle 158 en des emplacements diamétralement opposés. Cette rondelle 158 forme un diaphragme 160 capable d'exercer des efforts sur les deux composants. As can be seen in Figure 10, the two tabs 154 are connected to a washer 158 at diametrically opposed locations. This washer 158 forms a diaphragm 160 capable of exerting forces on the two components.
Les languettes 154 et rondelle 158 peuvent être réalisées à partir d'une tôle. The tabs 154 and washer 158 can be made from a sheet.
La languette 154 exerce un effort sur la face de couplage 162 pour coupler les deux composants 51 et 52. The tab 154 exerts a force on the coupling face 162 to couple the two components 51 and 52.
La précontrainte élastique du diaphragme permet à la languette d'exercer un effort à la fois sur la face d'appui 163 et sur la face de couplage 162, pour coupler les deux composants 51 et 52 en rotation. The elastic prestressing of the diaphragm allows the tongue to exert a force on both the bearing face 163 and the coupling face 162, to couple the two components 51 and 52 in rotation.
La portion de la languette 154 qui exerce un effort sur la face de couplage 162 est radialement à l'intérieur de la portion de la languette 154 qui exerce un effort sur la face d'appui 163. La languette est poussée axialement en direction opposée aux organes de transmission 14 pour découpler les deux composants 51 et 52. The portion of the tongue 154 which exerts a force on the coupling face 162 is radially inside the portion of the tongue 154 which exerts a force on the bearing face 163. The tongue is pushed axially in the opposite direction to the transmission members 14 for decoupling the two components 51 and 52.
La figure 11 présente un autre mode de réalisation de l'invention. Les éléments identiques ou analogues aux éléments du premier mode de réalisation illustré sur les figures 1 à 5, portent le même chiffre de référence augmenté de 200. Figure 11 shows another embodiment of the invention. Elements identical or similar to the elements of the first embodiment illustrated in Figures 1 to 5, have the same reference numeral increased by 200.
L'élément primaire 202 comporte les deux composants 252 et 251 agencés pour tourner ensemble lorsqu'ils sont couplés et pour tourner l'un par rapport à l'autre lorsqu'ils sont découplés. Le composant 252 est destiné à être relié à un vilebrequin et est fixé solidaire en rotation avec un support annulaire 280 sur lequel est fixée une couronne dentée d'entraînement 209. Ainsi, lors du démarrage du moteur du véhicule, le couple de démarrage venant de la couronne de démarrage 209 transite par le support annulaire 280 et par ce composant 252 jusqu'au vilebrequin sans passer par le dispositif de débrayage 250. The primary element 202 includes the two components 252 and 251 arranged to rotate together when coupled and to rotate relative to each other when decoupled. The component 252 is intended to be connected to a crankshaft and is secured to in rotation with an annular support 280 on which is fixed a driving ring gear 209. Thus, when starting the vehicle engine, the starting torque from the start ring 209 passes through the annular support 280 and by this component 252 to the crankshaft without passing through the clutch device 250.
L'autre 251 des deux composants comporte le suiveur de came 210 agencé pour coopérer avec l'organe de transmission 214, l'organe de transmission étant porté par l'élément secondaire 203. Le support annulaire 280 est un support annulaire en tôle. The other 251 of the two components comprises the cam follower 210 arranged to cooperate with the transmission member 214, the transmission member being carried by the secondary element 203. The annular support 280 is an annular support plate.
Le support annulaire 280 peut comporter au moins un raidisseur. Chaque raidisseur peut être réalisé en déformant axiallement le support annulaire, cette déformation étant réalisée circonférentiellement autour de l'axe de rotation, par exemple par emboutissage de la tôle. The annular support 280 may comprise at least one stiffener. Each stiffener can be made by axially deforming the annular support, this deformation being performed circumferentially around the axis of rotation, for example by stamping the sheet.
Ce support annulaire 280 en tôle comporte deux raidisseurs 281 et 282 radialement décalés. Le support annulaire 280 comporte deux parties 283 et 284 s'étendant perpendiculmairement à l'axe de rotation X. Ces deux parties sont reliées par une troisième partie 285 en portion de cône. This annular support 280 in sheet metal comprises two stiffeners 281 and 282 radially offset. The annular support 280 has two parts 283 and 284 extending perpendicular to the axis of rotation X. These two parts are connected by a third portion 285 cone portion.
La première partie 283 s'étendant perpendiculmairement à l'axe de rotation X est agencée radialement à l'intérieur de la troisième partie 285. The first portion 283 extending perpendicular to the axis of rotation X is arranged radially inside the third portion 285.
La seconde partie 284 s'étendant perpendiculmairement à l'axe de rotation X est agencée radialement à l'extérieur de la troisième partie 285. Un raidisseur 281 relie la troisième partie 285 du support annulaire à la première partie 283 du support annulaire et un autre raidisseur 282 relie la troisième partie 285 du support annulaire à la seconde partie 284 du support annulaire. Le support annulaire 280, solidaire en rotation du composant 252 destiné à être relié au vilebrequin, comporte une cavité annulaire 286 dans laquelle est logée au moins partiellement l'autre 251 des deux composants. Le support annulaire 280 et le composant 252 destiné à être relié au vilebrequin comportent des orifices 287 et 208a agencés de sorte que le support annulaire 280 et ce composant 252 sont aptes à être fixés ensemble sur le vilebrequin, avec les mêmes vis de fixation 208. Le composant 252 relié au vilebrequin comporte un évidement 288 dans lequel est logée la première partie 283 du support annulaire s'étendant perpendiculairement à l'axe de rotation. The second portion 284 extending perpendicularly to the axis of rotation X is arranged radially outside the third portion 285. A stiffener 281 connects the third portion 285 of the annular support to the first portion 283 of the annular support and another stiffener 282 connects the third portion 285 of the annular support to the second portion 284 of the annular support. The annular support 280, integral in rotation with the component 252 intended to be connected to the crankshaft, comprises an annular cavity 286 in which is housed at least partially the other 251 of the two components. The annular support 280 and the component 252 intended to be connected to the crankshaft comprise orifices 287 and 208a arranged so that the annular support 280 and this component 252 are able to be fixed together on the crankshaft, with the same fastening screws 208. The component 252 connected to the crankshaft comprises a recess 288 in which is housed the first portion 283 of the annular support extending perpendicularly to the axis of rotation.
Le support annulaire comporte une portion radialement externe cylindrique 289, s'étendant axialement. The annular support comprises a cylindrical radially outer portion 289, extending axially.
La couronne dentée 209 est fixée, par exemple par soudage, sur cette portion cylindrique 289. The ring gear 209 is fixed, for example by welding, on this cylindrical portion 289.

Claims

REVENDICATIONS
1. Amortisseur, notamment un amortisseur de torsion pour une chaîne de transmission d'automobile, l'amortisseur comportant : A shock absorber, in particular a torsion damper for an automobile transmission chain, the shock absorber comprising:
- un élément mobile primaire (2) en rotation par rapport à un axe de rotation (X), destiné à être relié à un élément d'entrée de couple,  a primary movable element (2) rotating with respect to an axis of rotation (X) intended to be connected to a torque input element,
un élément mobile secondaire (3) en rotation par rapport à l'axe de rotation (X), et mobile en rotation par rapport à l'élément mobile primaire par rapport à l'axe de rotation (X), destiné à être relié à un élément de sortie de couple,  a secondary movable element (3) rotated relative to the axis of rotation (X), and movable in rotation with respect to the primary movable element relative to the axis of rotation (X), intended to be connected to a torque output element,
- au moins un organe de transmission (14, 15) monté solidaire en rotation de l'un des éléments mobiles primaire et secondaire, l'organe de transmission comportant une lame élastique capable de fléchir et transmettre un couple de rotation entre ces deux éléments, la flexion de la lame élastique étant accompagnée d'une rotation relative entre les éléments mobiles primaire et secondaire, selon l'axe de rotation (X), - un dispositif de débrayage (50) agencé pour interrompre la transmission du couple entre l'élément d'entrée de couple et l'élément de sortie de couple, le dispositif de débrayage étant actionné pour interrompre la transmission du couple lorsque le débattement angulaire entre les éléments mobiles primaire et secondaire, par rapport à une position angulaire relative de repos, atteint un angle prédéterminé (A).  - At least one transmission member (14, 15) mounted to rotate with one of the primary and secondary movable elements, the transmission member comprising an elastic blade capable of bending and transmitting a torque between these two elements, the flexion of the elastic blade being accompanied by a relative rotation between the primary and secondary movable elements, along the axis of rotation (X), - a disengaging device (50) arranged to interrupt the transmission of torque between the element the torque release member and the torque output member, the disengagement device being actuated to interrupt the transmission of the torque when the angular displacement between the primary and secondary movable members, relative to a relative angular position of rest, reaches a predetermined angle (A).
2. Amortisseur selon la revendication précédente, caractérisé en ce que l'un au moins des éléments primaire et secondaire comporte deux composants (51 ; 52) agencés pour tourner ensemble lorsqu'ils sont couplés et pour pouvoir tourner l'un par rapport à l'autre lorsqu'ils sont découplés. 2. Shock absorber according to the preceding claim, characterized in that at least one of the primary and secondary elements comprises two components (51; 52) arranged to rotate together when they are coupled and to be able to turn relative to each other. other when decoupled.
3. Amortisseur selon la revendication précédente, caractérisé en ce que le dispositif de débrayage est agencé pour disjoindre ces deux composants (51 ; 52) pour interrompre la transmission du couple entre les éléments primaire et secondaire. 3. Shock absorber according to the preceding claim, characterized in that the disengaging device is arranged to disjoin these two components (51; 52) to interrupt the transmission of torque between the primary and secondary elements.
4. Amortisseur selon l'une des revendications 2 et 3, caractérisé en ce que les deux composants (51 ; 52) sont agencés de manière à pouvoir tourner en glissant l'un par rapport à l'autre lorsqu'ils sont découplés. 4. Shock absorber according to one of claims 2 and 3, characterized in that the two components (51; 52) are arranged to be rotatable by sliding relative to each other when decoupled.
5. Amortisseur selon l'une des revendications 2 à 4, caractérisé en ce que, lorsque l'élément primaire comporte deux composants, l'un des composants est assemblé avec un moyeu (5) de l'amortisseur, et notamment l'autre composant porte une couronne dentée d'entraînement (9). 5. Damper according to one of claims 2 to 4, characterized in that, when the primary element comprises two components, one of the components is assembled with a hub (5) of the damper, and in particular the other component carries a driving ring gear (9).
6. Amortisseur selon l'une des revendications 2 à 5, caractérisé en ce que le dispositif de débrayage (50) comporte un levier (53, 153) agencé pour joindre et disjoindre les deux composants (51 ; 52) en fonction des efforts exercés sur le levier. 6. Shock absorber according to one of claims 2 to 5, characterized in that the disengaging device (50) comprises a lever (53, 153) arranged to join and disjoin the two components (51; 52) depending on the forces exerted on the lever.
7. Amortisseur selon la revendication précédente, caractérisé en ce que le levier (53, 153) comporte au moins une languette (54, 154) interposée entre les deux composants. 7. Shock absorber according to the preceding claim, characterized in that the lever (53, 153) comprises at least one tongue (54, 154) interposed between the two components.
8. Amortisseur selon l'une des revendications 2 à 7, caractérisé en ce que l'un des composants comporte un logement (56, 156) agencé pour loger au moins partiellement l'autre composant. 8. Shock absorber according to one of claims 2 to 7, characterized in that one of the components comprises a housing (56, 156) arranged to accommodate at least partially the other component.
9. Amortisseur selon la revendication précédente, caractérisé en ce que ce logement (56, 156) loge un diaphragme (60, 160) capable d'exercer des efforts sur les deux composants. 9. Shock absorber according to the preceding claim, characterized in that the housing (56, 156) houses a diaphragm (60, 160) capable of exerting forces on the two components.
10. Amortisseur selon la revendication précédente en combinaison avec la revendication 7, caractérisé en ce que la languette (54, 154) se raccorde au diaphragme (60, 160). 10. Shock absorber according to the preceding claim in combination with claim 7, characterized in that the tongue (54, 154) is connected to the diaphragm (60, 160).
11. Amortisseur selon l'une des revendications 7 à 10, caractérisé en ce que l'un des éléments primaires et secondaire comporte un organe anti rotation (61) agencé pour coopérer avec la languette (54, 154) pour l'empêcher de tourner sur cet élément. 11. Shock absorber according to one of claims 7 to 10, characterized in that one of the primary and secondary elements comprises an anti-rotation member (61) arranged to cooperate with the tongue (54, 154) to prevent it from rotating on this element.
12. Amortisseur selon la revendication précédente, caractérisé en ce que l'organe anti rotation (61) comporte une encoche (61) dans laquelle s'étend la languette (54, 154). 12. Shock absorber according to the preceding claim, characterized in that the anti-rotation member (61) comprises a notch (61) in which the tongue (54, 154) extends.
13. Amortisseur selon l'une des revendications 6 à 12, caractérisé en ce que l'organe de transmission (14, 15) est monté solidaire d'un organe d' actionnement (70), notamment sous la forme d'une rondelle, et cet organe d' actionnement (70) est agencé pour pouvoir actionner le levier (53). 13. Shock absorber according to one of claims 6 to 12, characterized in that the transmission member (14, 15) is mounted integral with an actuating member (70), in particular in the form of a washer, and said actuator (70) is arranged to operate the lever (53).
14. Amortisseur selon la revendication précédente, caractérisé en ce que l'organe d' actionnement (70) comporte une rampe (71) agencée pour coopérer avec le levier (53) pour l'actionner. 15. Amortisseur selon l'une des revendications 6 à 12, caractérisé en ce que l'organe de transmission (14, 14. Shock absorber according to the preceding claim, characterized in that the actuating member (70) comprises a ramp (71) arranged to cooperate with the lever (53) to actuate. Damper according to one of Claims 6 to 12, characterized in that the transmission member (14,
15) est agencé pour pouvoir actionner le levier (153). 15) is arranged to operate the lever (153).
16. Amortisseur selon la revendication précédente, caractérisé en ce que l'organe de transmission (14, 15) comporte une portion d' actionnement (18) agencée pour pouvoir venir en appui contre le levier (153) pour l'actionner. 16. Damper according to the preceding claim, characterized in that the transmission member (14, 15) comprises an actuating portion (18) arranged to be in abutment against the lever (153) to actuate.
17. Amortisseur selon l'une des revendications 2 à 4, ou 6 à 16 sans leur rattachement à la revendication 5, caractérisé en ce que lorsque l'élément primaire comporte les deux composants agencés pour tourner ensemble lorsqu'ils sont couplés et pour tourner l'un par rapport à l'autre lorsqu'ils sont découplés, l'un (252) des composants est destiné à être relié à l'élément d'entrée de couple et est fixé solidaire en rotation avec un support annulaire (280) sur lequel est fixée une couronne dentée d'entraînement (209). 17. Shock absorber according to one of claims 2 to 4, or 6 to 16 without their attachment to claim 5, characterized in that when the primary element comprises the two components arranged to rotate together when they are coupled and to rotate relative to one another when decoupled, one (252) of the components is adapted to be connected to the torque input member and is secured to rotate with an annular support (280) on which is fixed a driving ring gear (209).
PCT/EP2016/061331 2015-05-20 2016-05-19 Torsional damper for motor vehicle torque transmission device WO2016184986A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1554534A FR3036448B1 (en) 2015-05-20 2015-05-20 TORSION DAMPER FOR MOTOR VEHICLE TORQUE TRANSMISSION DEVICE
FR1554534 2015-05-20

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WO2016184986A1 true WO2016184986A1 (en) 2016-11-24

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FR (1) FR3036448B1 (en)
WO (1) WO2016184986A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112696458A (en) * 2019-10-21 2021-04-23 舍弗勒技术股份两合公司 Torsional vibration damper and drive train

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3070462B1 (en) 2017-08-29 2020-07-10 Valeo Embrayages TORSION SHOCK ABSORBER

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008004258A1 (en) * 2006-07-07 2008-01-10 Dayco Europe S.R.L. Pulley assembly
WO2009047816A1 (en) * 2007-10-12 2009-04-16 Dayco Europe S.R.L. Pulley assembly preferably for feeding an accessory member by means of a belt drive in an internal combustion engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008004258A1 (en) * 2006-07-07 2008-01-10 Dayco Europe S.R.L. Pulley assembly
WO2009047816A1 (en) * 2007-10-12 2009-04-16 Dayco Europe S.R.L. Pulley assembly preferably for feeding an accessory member by means of a belt drive in an internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112696458A (en) * 2019-10-21 2021-04-23 舍弗勒技术股份两合公司 Torsional vibration damper and drive train

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FR3036448B1 (en) 2017-06-02

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