EP3445996A1 - Amortisseur de torsion - Google Patents
Amortisseur de torsionInfo
- Publication number
- EP3445996A1 EP3445996A1 EP17717452.1A EP17717452A EP3445996A1 EP 3445996 A1 EP3445996 A1 EP 3445996A1 EP 17717452 A EP17717452 A EP 17717452A EP 3445996 A1 EP3445996 A1 EP 3445996A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transmission portion
- rotation
- skin
- cam surface
- axis
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—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
- F16F15/133—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
- F16F15/1336—Leaf springs, e.g. radially extending
Definitions
- the invention relates to a torsion damper for equipping a torque transmission device.
- the invention relates more particularly to the field of transmissions for a motor vehicle, the invention being in particular intended to transmit the engine torque between the engine and the wheels of the vehicle.
- This damper can be applied to a transmission device for a manual gearbox automobile, such as a damped friction disc or a double damping flywheel, as well as to a transmission device for an automobile with an automatic gearbox, such as a gearbox. torque converter or lock-up, or a double clutch.
- 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.
- Bladed dampers used in the transmission chains are known for transmitting the engine torque and damping the acyclisms.
- the blade mounted on a secondary flywheel has a cam surface arranged to cooperate with a cam follower rotatably mounted on the primary flywheel.
- the present invention aims to improve the reliability of the aforementioned type of damper blades, including reducing the risk of malfunction of the damper.
- the invention improves the solutions of the prior art and provides an improved flexible blade torsion damper.
- the invention thus relates to a torsion damper for a torque transmission device, in particular for an automobile, in particular for a clutch device, the shock absorber comprising:
- a first member rotatable about an axis of rotation (X)
- a second member movable in rotation about the axis of rotation (X) and movable relative to the first member about the axis of rotation (X)
- an arm connected by an elastic connection to the second element of the damper, this arm comprising a cam surface arranged to cooperate, during a relative rotation between the first and second elements, with a cam follower to allow the transfer of torque between the first and the second element
- transmission portion said portion of the arm along which extends the cam surface.
- the "axial" orientation is defined by the axis (X) of rotation of the elements of the torsion damper.
- the "radial" orientation is directed orthogonally to the axis (X) of rotation of the elements of the torsion damper.
- annular orientation is directed orthogonally to the axis of rotation of the damper and orthogonal to the radial direction.
- an element described as developing circumferentially is an element of which one component develops in a circumferential direction, ie around the axis of rotation.
- the indication of an angle or an angular sector is interpreted as delimited by two lines of a plane perpendicular to the axis of rotation X and secant at said axis of rotation X.
- the terms “external” and “internal” are used to define the relative position of one element relative to another, with reference to the axis of rotation of the torsion damper, an element close to the axis is thus described as internal as opposed to an external element located radially periphery. Cut in any plane comprising the axis of rotation X, the transmission portion has a width extending in the axial direction, parallel to the axis X, and a height extending in the radial direction.
- the mass of the transmission portion is lowered and thus reduces the risk of malfunctions of the damper, especially in high speed ranges when the centrifugal forces are the most important.
- the transmission portion is formed in a single material, made of steel, and has, in all of its sections cut along planes comprising the axis of rotation (X), a solid rectangular section, the arm transmission portion of the present invention is improved because it has at least one area of reduced density.
- the reduction in the mass of the transmission portion makes it possible to reduce the centrifugal forces and to apply the cam follower more moderately, particularly in important speed ranges.
- the lightening of the arm contributes to the overall relief of the shock absorber.
- the torsion damper may have one or more of the following characteristics:
- At least one of the first and second elements is adapted to be rotated about the axis of rotation X.
- the area of reduced density is located away from the cam surface.
- the transmission portion is multi-material.
- the transmission portion is bi-materials.
- the area of reduced density is formed at least in part in the material of the transmission portion of the arm having the lowest density.
- the reduced density area or one of the reduced density areas of the transmission portion is a recess in the transmission portion.
- the area of reduced density is formed at least in part by this recess.
- the recess In a plane intersecting the cam surface and including the axis of rotation of the damper, the recess is located at a distance from the cam surface, within a rectangular space in which the portion of transmission.
- the first and second elements are able to be rotated about the X axis.
- the first and second elements occupy a relative angular position of rest in the absence of torque transmission.
- the elasticity of the elastic connection makes it possible to keep the cam follower in contact with the cam surface.
- the arm transmission portion and the cam follower are arranged such that in operation the cam follower exerts a force of bending on the transmission portion producing in reaction a reaction force of the elastic connection transmitted by the transmission portion to the cam follower, said reaction force being able to recall the first and second elements to the angular position of rest.
- the cam surface is arranged so that, for at least some angular displacement areas between the first and second members, the displacement of the cam follower on the cam surface is accompanied by an elastic deformation of the elastic link.
- the cam follower comprises a roller arranged to move while rolling on the cam surface, during a relative rotation of the first and second members. Thus, excessive friction between the cam follower and the cam surface is avoided.
- the roller is rotatably mounted on the first element.
- the roller is rotatably mounted on the first element, by means of a rolling bearing.
- the roller is rotatable relative to the first and second elements.
- the rolling body moves on the one hand on the cam surface of the transmission portion of the arm and on the other hand, on the first element.
- the rolling body accomplishes a curvilinear path on the first element on at least one predetermined angular sector, including rolling.
- the arm is formed on a transmission member, said transmission member comprising:
- At least one flexible blade comprising:
- the resilient connection is a flexable bend for absorbing acyclisms upon relative rotation of the first and second members or when the cam follower moves on the cam surface.
- the blade is arranged to flex in a plane perpendicular to the axis of rotation X.
- the reaction force is an elastic restoring force exerted by the flexible blade on the cam follower in response to the elastic deformation of the flexible blade.
- the reaction force is an elastic restoring force exerted solely by the flexible blade on the cam follower in response to the elastic deformation of the flexible blade.
- the flexible blade has a free end region and the damper is arranged so that this free end region moves with a radial component relative to the axis of rotation of the damper when the cam follower bends the blade.
- the radial distance separating the axis of rotation from said free distal end zone varies as a function of the angular displacement between the first and the second element.
- the free end zone circumferentially extends the cam surface.
- the transmission portion extends circumferentially between the elastic connection and the free end zone.
- the transmission member comprises two blades arranged symmetrically with respect to the axis of rotation.
- the transmission member comprises a plurality of blades regularly arranged around the axis of rotation.
- the damper comprises at least two transmission members arranged for example symmetrically with respect to the axis of rotation. - Where appropriate, the transmission members are regularly arranged around the axis of rotation.
- each transmission member comprises a single blade.
- the attachment portion is fixed so as not to flex when the first and second members rotate relative to each other.
- Each blade is linked to the second element only through its fixing portion.
- the damper comprises two flexible blades carried by the second element and the damper comprises two cam followers carried the first element, the cam followers being respectively arranged to cooperate with one and the other of the two flexible blades.
- the cam surface extends circumferentially around the axis of rotation X.
- the cam surface has a neutral position occupied by the cam follower when no torque is transmitted by the damper.
- the damper is intended to be placed in a transmission chain, that is to say between the engine and the wheels of a motor vehicle.
- the damper is arranged to transmit the engine torque passing from the engine to the wheels. In other words, it is intended to be placed in the transmission path of the torque between the engine and the wheels.
- the damper is capable of transmitting a torque of between 10 Nm and
- the damper is capable of transmitting a torque of between 100 N.m and 300 N.m, for example 150 N.m, or 200 N.m.
- the transmission portion has a plane of symmetry perpendicular to the axis of rotation of the damper.
- the transmission portion has a zone of reduced density on at least two angular sectors spaced at least 10 degrees about the axis of rotation X, in particular at least 30 degrees, in particular at least 45 degrees, by example of at least 60 degrees.
- the transmission portion comprises a zone of reduced density on at least two angular sectors located on either side of the neutral position of the transmission portion.
- Said at least one zone of reduced density extends around the axis of rotation X over an angular sector of at least 20 degrees, in particular at least 30 degrees, for example at least 45 degrees, of preferably at least 60 degrees, especially on the same angular sector as the cam surface.
- the transmission portion of the arm includes a body at least partially covered with a skin, the cam surface being formed, at least partially, on this skin, and the zone of reduced density being formed at least on a part of this body.
- the body and the skin are formed in two different materials.
- the body is less dense than the skin.
- the skin has a stiffness greater than the stiffness of the body.
- the skin makes it possible to limit the deformations in the transmission portion of the arm.
- the skin also makes it possible to limit or even prevent any deformation of the transmission portion when a torque is transmitted by the damper.
- the cam surface extends entirely on this skin.
- the skin is metallic
- At least part of the reduced density zone is covered directly by the skin.
- the skin is formed in a sheet, for example a steel sheet.
- the skin has a thickness of between 1 and 3 mm.
- the area of reduced density is formed at least in part in a fiber-reinforced polymer material, said composite material.
- the body is formed of composite material.
- the fibers of the composite material are, for example, aramid fibers, carbon fibers, or glass fibers.
- Fibers are mainly unidirectional fibers.
- unidirectional fibers represent more than 60% of the fibrous mass.
- the unidirectional fibers extend along the transmission portion of the arm.
- the fibers extend parallel to the cam surface.
- the polymer material preferably belongs to the family of thermosets.
- the polymeric material is for example an epoxy resin.
- the polymer material belongs to the family of thermoplastics.
- the body and the skin are bonded to one another, in particular by means of a layer of adhesive substance.
- the skin is directly overmolded on the body.
- the elastic connection of the transmission member is a bend arranged so that, for a predetermined angular sector, the transmission member comprises two radially offset regions of one another in a radial direction, a free space separating radially. said two radially offset regions.
- each blade has two regions radially offset from one another in a radial direction, a free space radially separating said two radially offset regions.
- these two regions are distant from the transmission portion.
- the elbow is made of composite material.
- the fixing portion is made at least partly of composite material.
- the reduced density area of the transmission portion, the elbow and the attachment portion are integrally molded of composite material.
- the skin is made by cutting sheet metal and bending.
- the skin is attached to the body of the transmission portion, in particular by means of an adhesive.
- the skin and the body may be bonded to one another by shape locking.
- the width of the skin is smaller than the width of the transmission portion.
- the area of reduced density has two edges that line the skin axially.
- the skin In a plane intersecting the cam surface and including the axis of rotation of the damper, the skin has two flanks turned towards the edges, and at least one of its flanks has an undercut.
- the body comprises an edge of complementary shape to this undercut to retain the skin on the surface of the body.
- the skin In a plane intersecting the cam surface and including the axis of rotation of the damper, the skin has two undercuts and the body has two edges of complementary shape to these counters strips for the body and the skin to hold each other. one and the other.
- the cam surface In a plane intersecting the cam surface and including the axis of rotation of the damper, the cam surface is curved so as to reduce edge effects and avoid excessive stress concentrations when moving the cam follower, particularly of the roller, on the transmission portion (Hertz pressures).
- the skin In a plane intersecting the cam surface and including the axis of rotation of the damper, the skin has a curved upper surface, the cam surface being formed on this curved upper surface.
- the body is made entirely of composite material.
- the transmission portion includes a reinforcement for reinforcing the transmission portion vis-à-vis the bending forces exerted by the cam follower on the transmission portion.
- the reinforcement increases the stiffness of the transmission portion and limits the deformation of the transmission portion when a torque is transmitted by the damper.
- the reinforcement is arranged on the skin.
- the skin has an outgrowth that extends inside the body, this outgrowth forming the reinforcement of the skin.
- the reinforcement has, in a plane intersecting the cam surface and comprising the axis of rotation of the damper, a geometric pattern which extends circumferentially, continuously or not, around the axis X, along the transmission portion.
- the reinforcement is metallic.
- the reinforcement extends circumferentially along at least a portion of the transmission portion.
- the reinforcement extends entirely along the transmission portion.
- the skin and the reinforcement extend circumferentially along the same angular sector.
- the reinforcement comprises a plane of symmetry perpendicular to the axis of rotation of the damper.
- the reinforcement and the transmission portion have the same plane of symmetry.
- the area of reduced density and the reinforcement are bonded to each other by means of a layer of adhesive substance.
- the reinforcement extends from the skin over at least half the height of the transmission portion.
- the elbow is devoid of reinforcement.
- this extruded section may be T-shaped.
- the reinforcement comprises a reinforcement embedded at least partly in the zone of reduced density, for example in the composite material.
- the reinforcement is a reinforcement embedded at least partly in the zone of reduced density, for example in the composite material.
- the height of the armature extends over at least one fifth of the height of the transmission portion, in particular at least a quarter, for example at least one third, especially at least half the height of the transmission portion.
- the armature extends perpendicular to the cam surface.
- the armature extends perpendicular to the axis of rotation of the damper.
- the frame extends entirely along the transmission portion.
- the skin and the frame are linked.
- the skin and the frame are formed in one piece, especially in an extruded profile.
- this extruded section is T-shaped.
- the armature extends at half the width of the transmission portion.
- the armature comprises a receptacle arranged to retain, in particular radially, the reinforcement in the zone of reduced density, in particular in the composite material.
- the grip extends entirely along this frame.
- the armature In a plane intersecting the cam surface and including the axis of rotation of the damper, the armature is T-shaped.
- the frame and the skin are linked and the socket is arranged on the frame, on an edge of the frame radially opposite the skin.
- the skin, the frame and the socket can be formed in one piece, especially in an extruded profile.
- this extruded profile has a shape of I.
- the armature has a plane of symmetry perpendicular to the axis of rotation of the damper.
- the armature and the transmission portion have the same plane of symmetry.
- the height of the armature is lower than the height of the body.
- the setting of the reinforcement is entirely embedded in the zone of reduced density, for example in the composite material.
- the reinforcement has a sole that extends circumferentially along at least a portion of the body surface opposite the skin.
- This sole increases the stiffness of the transmission portion and limits the deformations, in particular elastic, of the transmission portion when a torque is transmitted by the damper.
- the soleplate also makes it possible to absorb compression stresses, which is particularly advantageous when the zone of reduced density is composed of unidirectional fiber composite material, the latter being fragile with respect to compressive loads.
- the sole is metallic.
- the sole extends completely along the transmission portion
- the sole extends substantially parallel to the skin.
- the skin and the sole extend along the same angular sector.
- the sole is formed in a sheet.
- the sole and the skin are separated by the area of reduced density.
- the transmission portion comprises a sole and an armature.
- the sole and the frame are formed in the same room.
- the frame connects the sole and the skin.
- the sole, the frame and the skin are formed in one and the same piece, in particular in an extruded section, especially in I.
- the reinforcement comprises at least one wing which, in a plane perpendicular to the axis of rotation of the damper, covers at least part of the transmission portion.
- the reinforcement comprises two wings between which is arranged the area of reduced density. Where appropriate, the skin connects these two wings.
- Wing and skin are formed in the same room, especially in an extruded section L-shaped when it has a single wing or U when there are two wings.
- the skin and the wing extend along the same angular sector.
- the wing In a plane intersecting the cam surface and including the axis of rotation of the damper, the wing extends over the entire height of the transmission portion.
- At least one of the areas of reduced density of the transmission portion is a recess located remote from the cam surface, the recess being located at inside a rectangular space in which the transmission portion is inscribed.
- At least one of these recesses is formed at least in part, halfway up the transmission portion. In other words, at least a portion of the recess is distant from the corners of the rectangular space.
- the width of the recess is less than the width of the transmission portion.
- the recess is not necessarily a through hole traversing the width of the blade.
- the transmission portion is formed by an extruded profile along which the cam surface extends, this profile being bent around the axis of rotation of the damper.
- the transmission portion comprises a reinforcement and has a shape of U, I, T, or L.
- the portion of transmission is formed by an extruded profile in the shape of U, I, T, or L.
- the transmission portion has a shape of I, with a head on which is formed the cam surface, a base, and a core connecting the base and the head.
- the base and the soul form the reinforcement of the transmission portion.
- the transmission portion has two recesses extending circumferentially around the axis X, the two recesses being arranged axially on either side of the core.
- the base has a width less than the width of the head.
- the base in a plane intersecting the cam surface and including the axis of rotation of the damper, the base may have a rounded shape, for example in the form of a drop. If desired, in this plane, the core of the transmission portion has a portion thinned, in the width direction, at half height.
- the side walls of the core are curved.
- the progressive evolution of the width of the core makes it possible to avoid the appearance of stress accumulation zones that could weaken the transmission portion.
- the implementation of curved walls makes it possible to facilitate the method of manufacturing the I-transmission portion when it is made by forging.
- the transmission portion When, in a plane intersecting the cam surface and including the axis of rotation of the damper, the transmission portion has a shape of
- the transmission portion has a single recess extending circumferentially about the X axis.
- the U-shaped transmission portion comprises a head on which the cam surface is formed, and two lateral wings connected by the head, the recess being arranged between these wings.
- the two wings form the reinforcement of the transmission portion.
- the transmission portion has a shape of U, I, T, or L, the cam surface being formed on a first portion of the profile and the second portion of the profile forms the reinforcement of the transmission portion.
- the transmission portion has a plurality of reduced density areas formed by recesses passing through the width of the transmission portion.
- the recess is a through hole in the width of the transmission portion.
- these through holes are preferably devoid of additional part filling them in part or in whole.
- the transmission portion has at least two orifices spaced at least 10 degrees around the axis of rotation X, in particular at least 30 degrees, in particular at least 45 degrees, for example at least 60 degrees. .
- the transmission portion has at least two orifices located on either side of the neutral position of the transmission portion.
- the traversing recess extends around the axis of rotation X over an angular sector of at least 20 degrees, in particular at least 30 degrees, for example at least 45 degrees, preferably at least minus 60 degrees, if desired on the same angular sector as the cam surface.
- the armature In a plane intersecting the cam surface and including the axis of rotation of the damper, the armature has a V shape.
- the frame is separated from the skin by the area of reduced density.
- the recesses may be chamfers arranged on the corners of the transmission portion opposite to the cam surface.
- These chamfers can extend at least halfway up the transmission portion.
- the transmission portion may comprise a first zone of reduced density, for example of composite material, and a second zone of reduced density, comprising for example at least one recess, in particular chamfers.
- the invention also relates to:
- the arm being connected by an elastic connection to the second element of the damper, said arm having a cam surface arranged to cooperate, upon relative rotation between the first and second members, with a cam follower to allow transfer of torque between the first and second members, the transmission portion; being the portion of the arm along which the cam surface surface extends, the method comprising the steps of: o providing an extruded profile or skin with the cam surface,
- the method may have several of the following characteristics:
- the manufacturing method further comprises a step of machining the cam surface.
- the transmission portion comprises a body at least partially covered with the skin, the body being formed at least in part of a fiber-reinforced polymer material, said composite material, and the method comprising the following steps:
- the step of binding at least a part of the body and the skin is performed during molding of the body of composite material, the skin being present in the mold, the body being overmolded on the skin, the body being bonded to the skin by locking shape.
- the transmission portion comprises a reinforcement, for example formed in curved metal extruded profile, the body being overmolded on the reinforcement.
- the skin and the body comprise interlocking means of interlocking form.
- the arm is formed on a transmission member, said transmission member having a fixing portion, a resilient connection connecting the arm to the fixing portion, characterized in that the fixing portion, the elastic connection and the reduced density zone the transmission portion are formed integrally in the fiber-reinforced polymer material, said composite material during the molding step.
- the arm is formed on a transmission member, said transmission member comprising a fixing portion, a resilient connection connecting the arm to the fixing portion, and the transmission portion, characterized in that the fixing portion, the elastic connection and the transmission portion are integrally formed in the bent extruded section.
- Figure 1 is a front view of a double damping flywheel illustrating the general operation of a torsion damper, wherein the transmission member and the cam followers are shown in dashed lines.
- Figure 2 is a sectional view of the double damping flywheel of Figure 1, according 11-ll.
- Figure 3 is a perspective view of the double damping flywheel of Figure 1.
- Figure 4 is a perspective view of the double damping flywheel of Figures 1 to 3, wherein the secondary flywheel is shown disassembled and spaced from the primary flywheel; to present the first embodiment of the invention.
- FIG. 5 is a sectional view of a double damping flywheel having a second embodiment of the invention.
- FIGS 6, 7, 8 and 9 show different views of the transmission member of Figure 5.
- Figures 10, 11, and 12 show different variants of the second embodiment.
- Figures 13, 14, and 15 show different views, respectively in perspective, from the front, and in section, of a third embodiment of the invention.
- Figures 16, 17, and 18 show different views, respectively in perspective, from the front, and in section, of a fourth embodiment of the invention.
- Figures 19, 20 and 21 show different views, respectively in perspective, from the front, and in section, of a fifth embodiment of the invention.
- Figures 25, 26 and 27 show different views, respectively in perspective, from the front, and in section, of a seventh embodiment of the invention.
- Figures 28 and 29 show two views, respectively in perspective and in section, of an eighth embodiment of the invention.
- Figures 30 and 31 show two views, respectively in perspective and in section, of a ninth embodiment of the invention.
- FIG. 32 and 33 show two views, respectively in perspective and in section, of a tenth embodiment of the invention.
- Figures 34, 35 and 36 show different views, respectively in perspective, from the front, and in section of an eleventh embodiment of the invention.
- the "axial" orientation is defined by the axis (X) of rotation of the elements of the torsion damper.
- the "radial” orientation is directed orthogonally to the axis (X) of rotation of the elements of the torsion damper.
- the "circumferential” orientation is directed orthogonally to the axis of rotation of the damper and orthogonal to the radial direction.
- an element described as developing circumferentially is an element whose component develops in a circumferential direction, ie around the axis of rotation.
- the indication of an angle or an angular sector is interpreted as delimited by two lines of a plane perpendicular to the axis of rotation X and secant at said axis of rotation X.
- the transmission portion has a width L extending in the axial direction, parallel to the axis X, and a height h extending in the radial direction.
- the damper is intended to be placed in a transmission chain, that is to say between the engine and the wheels of a motor vehicle, to transmit, in an exemplary implementation of the invention, the torque engine running from engine to wheels.
- the damper may be placed in shunt with respect to the path taken by the engine torque, particularly in the case of a drummer.
- the first and second elements are formed here respectively by the secondary and primary flywheels.
- the double damping flywheel 1 comprises a primary flywheel 2, intended to be fixed at the end of a crankshaft of an internal combustion engine, not shown, and a secondary flywheel 3 which is centered and guided on the primary flywheel 2 by means of a rolling ball bearing 4.
- the secondary flywheel 3 is intended to form the reaction plate of a clutch, not shown, connected to the input shaft of a gearbox.
- the primary flywheels 2 and secondary 3 are intended to be mounted movable about an axis of rotation X and are, moreover, rotatable relative to each other about said axis X.
- the primary flywheel 2 comprises a radially inner hub 5 supporting the rolling bearing 4, an annular portion 6 extending radially from the hub 5 and a cylindrical portion 7 extending axially on the opposite side to the motor, from the outer periphery of the annular portion 6.
- the annular portion 6 is provided, on the one hand, with fastening screw holes 8 for attaching the primary flywheel 2 to the crankshaft of the engine and, on the other hand, rivet passage holes 9 for attaching a transmission member to the primary flywheel 2.
- the primary flywheel 2 carries, on its outer periphery, a ring gear 10 for driving in rotation of the primary flywheel 2, using a starter.
- the hub 5 of the primary flywheel has a shoulder 1 1 serving to support an inner ring of the rolling bearing 4 and which retains said inner ring towards the motor.
- the secondary flywheel 3 has on its inner periphery a shoulder 12 serving to support an outer ring of the rolling bearing 4 and retaining said outer ring in the opposite direction to the motor.
- the secondary flywheel 3 comprises a flat annular surface 13, turned on the opposite side to the primary flywheel 2, forming a bearing surface for a friction lining of a clutch disc, not shown.
- the secondary flywheel 3 has, close to its outer edge, pads 14 and orifices 15 for mounting a clutch cover.
- the secondary flywheel 3 further comprises orifices 16, arranged vis-à-vis the orifices formed in the primary flywheel 2, and for the passage of the screws 8, when mounting the double damping flywheel 1 on the crankshaft.
- this damping means comprises two flexible blades 17a, 17b mounted integral in rotation of the primary flywheel 2.
- the flexible blades 17a, 17b are carried by a fixing portion, here an annular body 18 provided with orifices for the passage of the fastening rivets 9 to the primary flywheel 2.
- the annular body 18 further comprises orifices 19 for the passage of the screws 8 for fixing the double damping flywheel 1 to the nose of the crankshaft.
- the fixing body remains fixed, in other words it does not flex when the wheels turn relative to each other.
- These transmission members may for example be cut from a sheet or made in a foundry.
- the two flexible blades 17a and 17b are symmetrical with respect to the axis of rotation X of the damper.
- FIG. 4 shows that the flexible blades 17a, 17b each comprise, on the one hand, an arm 81 extending substantially circumferentially about the X axis and comprising the cam surface 20 and, on the other hand, an elastic connection 82.
- the portion of the arm 81 along which the cam surface 20 extends is called the "transmission portion”.
- the arms 81 are connected to the attachment portion 18 of the transmission member 30 by the elastic connection 82 which is here bent.
- the elastic connection 82 and the arms 81 thus form here the flexible blade 17a and the flexible blade 17b.
- the elbow 82 is able to flex during a relative rotation of the primary and secondary flywheels.
- the secondary flywheel 3 has two cam followers 24 arranged to cooperate each with a cam surface 20.
- the bending movement of the blades 17a and 17b is accompanied by a relative rotation between the primary and secondary flywheels to dampen the rotational acyclisms between primary and secondary steering wheels.
- the cam followers 24 move on the cam surfaces 20 during this relative rotation.
- the cam surfaces 20 are arranged on the arms 81 to cooperate, during a relative rotation between the primary and secondary flywheels, with the cam followers 24 to allow the transfer of torque between the flywheels.
- the cam followers 24 comprise rollers 21 carried by cylindrical rods 22 fixed to the secondary flywheel 3.
- the rollers 21 are rotatably mounted on the cylindrical rods 22 about an axis of rotation parallel to the axis of rotation X. Thanks to the elastic connection 82, the rollers 21 are held in abutment against their cam surface 20 and are arranged to roll against said cam surface 20 during a relative movement between the primary flywheels 2 and secondary 3.
- the rollers 21 are disposed radially outwardly of their respective cam surfaces so as to radially maintain the flexible blades 17a, 17b when subjected to centrifugal force.
- the rollers 21 are advantageously mounted in rotation on the cylindrical rods by means of a rolling bearing.
- the rolling bearing may be a ball bearing or roller.
- the rollers 21 have an antifriction coating.
- the primary and secondary flywheels 2 and 3 occupy a relative angular position of rest in the absence of torque transmission.
- the cam surface 20 has a neutral position N occupied by the cam follower 24 when no torque is transmitted by the damper.
- the cam follower is in the neutral position of the cam surface 20.
- Each cam surface 20 is arranged in such a way that, for an angular displacement between the primary flywheel 2 and the secondary flywheel 3, with respect to a relative angular position of rest, the displacement of the roller 21 thereon exerts a force of bending on the flexible blade.
- each flexible blade 17a, 17b exerts on each roller 21 a restoring force which tends to bring the primary flywheels 2 and secondary 3 to their relative angular position of rest.
- This reaction force is an elastic restoring force exerted by the flexible blades on the rollers 21 in response to the flexion of the blades 17a and 17b.
- the reaction force is an elastic restoring force exerted solely by each flexible blade 17a, 17b on the rollers 21 in response to the elastic deformation of the blade.
- the cam surfaces 20 are arranged so that, for at least some angular displacement areas between the first and second members, the displacement of the cam followers 24 on the cam surfaces 20 is accompanied by an elastic deformation of the links. elastics 82.
- the flexible blades 17, 17b are able to transmit 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).
- the damper is thus able to transmit a torque of between 10 Nm and 500 N.m.
- Each flexible blade has a free end zone 80 and the damper is arranged so that this free end region 80 approaches the axis of rotation of the damper when the cam follower 24 bends the blade.
- the radial distance separating the axis of rotation X from said free distal end zone 80 varies as a function of the angular displacement between the first and second element.
- This free end zone 80 circumferentially extends the cam surface 20.
- the portion of the arm 81 along which the cam surface extends, said transmission portion 83 has zones of reduced density 84.
- the zones of reduced density are formed by recesses 84 arranged in the transmission portion. These are orifices 84 traversing, in width, parallel to the axis of rotation X, the transmission portion 83. These orifices lighten the transmission portion 83.
- the arm 81 more moderately urges the follower to move. cam 24, in particular in high speed ranges, when the centrifugal forces are the most important.
- the lightening of the arm contributes to the overall relief of the shock absorber.
- each transmission portion 83 has five orifices 84 each spaced approximately 10 degrees from neighboring orifices.
- the orifices 84 are thus arranged around the axis of rotation X on an angular sector of approximately 45 degrees.
- Some orifices 84 are located on the transmission portion on which the cam follower rolls in the forward direction and other orifices are located on the transmission portion on which the cam follower rolls in the retro direction. In other words, the orifices are located on either side of the neutral position N of the cam surface.
- These orifices 84 are made by drilling, in the width direction, the transmission portions of the blades which can here be made entirely of metal, for example steel. These holes 84 are large enough to significantly lighten the transmission portion and should not be too important to avoid weakening the blade. Their diameter may for example be between 5 mm and 10 mm.
- each transmission member 130 comprises a single flexible blade 1 17.
- the damper here comprises two transmission members 130 disposed symmetrically with respect to the X axis, at a distance from one another .
- the cam followers 124 comprise rollers 121 mounted rotatably on the primary flywheel 102 around a rod 122 attached to the primary flywheel 102.
- the transmission portion of the arm may be multi-material, here bi-material.
- the area of reduced density 184 is formed here in the material of the transmission portion having the lowest density. This is a composite material As can be seen in FIG. 7, the zone of reduced density extends on either side of the neutral position N of the transmission portion 183. The zone of reduced density composite material 184 extends around the axis of rotation X, all along the transmission portion 183, here on an angular sector of about 90 degrees.
- the reduced density area 184 is located at a distance from the cam surface 120.
- the lightening of the transmission portion 183 does not adversely affect the rigidity of the cam surface 120 and the cam follower 124 thereon, particularly when the cam follower has a roller 121 rolling on the cam surface 120 .
- the transmission portion 183 of the arm includes a body 185 covered with a skin 186, the cam surface 120 being formed, at least partially on this skin 186, and the zone of reduced density 184 being formed here integrally by the body 185.
- the body 185 and the skin 186 are formed in two different materials.
- the average density of the body is lower than the average density of the skin.
- the material of the skin 186 may be chosen, in particular because of its hardness characteristics, so as to promote the displacement of the cam follower on the cam surface, especially when the cam follower is a rolling roller.
- the skin 186 here completely covers the body 185 in its width.
- the curvature of the cam profile can be obtained during a bending operation of the skin. Additional machining may allow, if desired, to improve the accuracy of the curvature of the cam surface.
- the skin has a greater stiffness than the stiffness of the body.
- the skin also makes it possible to limit, if desired, the deformations in the transmission portion 183 of the arm. Depending on its dimensioning, the skin can limit or even prevent any deformation of the transmission portion 183 when a torque is transmitted by the damper.
- the cam surface 120 extends entirely on the skin 186.
- the skin 186 is formed in a metallic material.
- the skin is for example formed in a steel sheet whose thickness is between 1 and 3 mm.
- the skin here has a constant thickness (height).
- the thickness of the skin can be varied to refine the definition of the cam profile. Such an operation may for example be performed by machining before or after assembly of the skin 186 and the body 185.
- the body 185 is formed of a fiber-reinforced polymer material, said composite material.
- the fibers of the composite material are here carbon fibers. These fibers are unidirectional fibers that extend along the transmission portion 183 of the arm. The fibers extend for example parallel to the cam surface.
- the polymeric material belongs to the family of thermosets. The polymeric material here is an epoxy resin. As can be seen in FIG. 7, the body of the transmission portion is made entirely of composite material.
- the body 185 and the skin 186 are bonded, if desired, to one another by means of a layer of adhesive substance 187.
- the elastic connection 182 of the transmission member is a bend 182 arranged so that, for a predetermined angular sector, the blade comprises two radially offset regions of one another in a radial direction, a free space E radially separating said two radially offset regions.
- the bend whether made as described above or as in the first embodiment, is also made of composite material. In comparison with a metal elbow, in particular steel, the embodiment of the composite material elbow makes it possible to have more elasticity, to accept a higher level of stress, and to store more energy in the blade 1 17.
- the skin can be made by cutting sheet metal and bending.
- the reduced density area 184 of the transmission portion 183, the bend 182 and the fastening portion 18 are integrally molded from a composite material.
- the skin may then be attached to the body of the transmission portion 183, in particular by means of the adhesive substance 187.
- the width of the skin is less than the width of the transmission portion 183 .
- the Reduced density zone 184 has two edges 188a and 188b which axially border the skin 186.
- the zone of reduced density 184 is for example formed in a composite material as previously.
- the skin 186 and the body 184 can be assembled one to the other. other by form locking.
- the skin 186 in fact has on each of its flanks 189a and 189b an undercut and the body has two edges 188a and 188b of complementary shapes. to these undercuts so that the body 185 and the skin 186 hold each other mutually.
- the composite material may be overmolded on the skin after the bending operation of the skin. The skin and the body are then held together by locking and forming.
- the skin 186 has a domed upper surface, the cam surface 120 being formed by this upper surface curved so as to reduce the edge effects and avoid excessive stress concentrations when moving the cam follower 124, in particular the roller 121, on the transmission portion 183 (Hertz pressures).
- Figures 13 to 15 describe another embodiment of the invention wherein the transmission portion further comprises a reinforcement 190. This addition is applicable to any of the embodiments shown in Figures 5 to 12.
- the skin 186 of the transmission portion 183 comprises a reinforcement 190 for reinforcing the transmission portion with respect to the bending forces exerted by the cam follower on the transmission portion 183.
- the skin 186 has a protrusion 190 which extends inside the body 185.
- the reinforcement increases the stiffness of the transmission portion 183 and limits the deformations of the transmission portion 183 when a torque is transmitted by the damper.
- This reinforcement is metallic. It extends entirely along the transmission portion 183.
- the skin 186 and the reinforcement 183 extend along the same angular sector.
- the body is composed of composite material again, integrally in this example.
- the body 185 and the reinforcement 190 may be bonded to each other by means of a layer of adhesive substance 191.
- the skin 186 and the reinforcement 190 are here formed in one piece in an extruded profile having a T shape.
- the reinforcement 190 is a reinforcement 193 embedded in the zone of reduced density 184, that is to say here in the composite material.
- the height of the armature extends from the skin to less than half the height of the transmission portion 183, here about four fifths of the height of the transmission portion 183.
- This armature 193 extends substantially perpendicular to the cam surface 120 and the axis of rotation of the damper. The armature extends around the X axis, on the same angular sector as the cam surface.
- the elbow is also formed in a composite material.
- the use of composite material for producing the elastic bent connection 182 makes it possible to accept a higher level of stress, and to store more energy in the blade. Being without reinforcement, the elbow offers greater deformation possibilities than the transmission portion, which allows to store more energy.
- FIGS. 16 to 18 describe another embodiment of the invention in which the reinforcement 190 of the transmission portion is a frame 193 which has a socket 192.
- This socket 192 is completely embedded in the composite material so as to retain, in particular radially, the armature 193 in the composite material.
- the armature 193 and the reduced density area are held together by a shape lock.
- the socket 192 extends circumferentially entirely along the frame
- the armature 193 is T-shaped.
- the armature 193 and the skin 186 are connected to each other and the socket 192 is arranged on an edge of the armature radially opposite the skin.
- the skin 186 and the armature 193 are formed here in a single piece in an extruded profile having substantially I-shaped, the width of the socket 192 being shorter here than the width of the skin 186.
- Figures 19 to 21 describe a fifth embodiment of the invention in which the reinforcement 190 comprises a sole 194.
- the reinforcement 190 here comprises an armature 193 and a flange 194.
- the frame 193 connects the sole 194 and the skin 186.
- the sole 194, the frame 193 and the skin 186 are formed in one piece, an extruded section I-shaped.
- This sole 194 increases the stiffness of the transmission portion 183 and limits the deformations, including elastic, of the transmission portion 183 when a torque is transmitted by the damper. The sole 194 also makes it possible to absorb the compressive stresses likely to degrade the composite material 184.
- the reinforcement 190 is formed solely by the sole 194.
- the reinforcement here is free of reinforcement embedded in the reduced density area 184.
- the cam surface and including the axis of rotation X we see that the sole 194 and the skin 186 are entirely separated by the reduced density zone 184, namely the composite material.
- this sole 184 increases the stiffness of the transmission portion 183 and limits the deformations, particularly elastic, of the transmission portion 183 when a torque is transmitted by the damper.
- the sole 194 also makes it possible to absorb compression stresses that can degrade the composite material.
- This sole 194 is metallic. It is for example formed in a sheet.
- the sole extends entirely along the transmission portion 183.
- the sole extends substantially parallel to the skin 186.
- the skin 186 and the soleplate 194 extend along the same angular sector.
- the interlocking assembly between the skin and the body shown in FIGS. 11 and 12 can be applied to the assembly of the soleplate 194 and the body 185. The body can thus be overmoulded on the soleplate. .
- the sole has a stiffness greater than the area of reduced density, thereby reinforcing the body 185 of the transmission portion.
- the width of the soleplate 194 is equal to the width of the body 185 of composite material.
- Figs. 25-27 disclose another embodiment of a bi-material transmission portion.
- the body 185 is formed once again of composite material and the reinforcement 190 here comprises two wings 196a and 196b which are arranged on each side of the transmission portion 183.
- the reduced density zone 184 is arranged axially between these two wings 196a and 196b.
- the wings 196a and 196b and the skin 186 are formed in one and the same piece, namely in a U-shaped extruded section.
- the skin and the wings extend along the same angular sector. It can be seen in FIG. 25 that the wings extend over the entire height of the transmission portion 183.
- the reinforcement has, in a plane intersecting the cam surface and including the axis of rotation of the damper, a geometric pattern which extends circumferentially, continuously, about the axis X, the along the transmission portion 183.
- the reinforcements 190 have planes of symmetry perpendicular to the axis of rotation of the damper. Reinforcements and transmission portions 183 comprise common planes of symmetry.
- the reinforcement and the skin are related.
- the skins 186 and the reinforcements 190 are manufactured in one piece to simplify the structure and manufacture of the transmission portion (FIGS. 13, 16, 19, 25).
- FIG. 28 to 33 illustrate other embodiments of the invention in which the reduced density areas are recesses. Elements identical or similar to the elements of Figures 5 to 27, that is to say, fulfilling the same function, have the same reference numeral increased by 100. Only the transmission portions are shown to facilitate understanding. In a plane intersecting the cam surface and including the axis of rotation of the damper, the areas of reduced density correspond to recesses 284, 284a, 284b located away from the cam surface, within ⁇ space rectangular 298 in which fits the transmission portion 283. These recesses extend circumferentially around the axis of rotation X, along the transmission portion, here on an angular sector of about 90 degrees.
- the transmission portion 283 is formed by a profile, preferably extruded, I-shaped, with a head 286 on which the cam surface 220 is formed, a base 294, and a core 299 connecting the base 294 and the head 286.
- This profile can be extruded and bent around the axis of rotation X of the damper.
- the base 294 and the core 299 of the I form the reinforcement 290 of the transmission portion 283.
- the transmission portion 283 has two recesses 284a and 284b extending circumferentially about the X axis, the two recesses 284a and 284b being arranged axially on either side of the core 299.
- each recess is delimited by the base 294 and the head 286.
- the core 299 extends perpendicular to the axis of rotation of the damper and has a plane of symmetry for the transmission portion 283. .
- the base 294 has a width less than the width of the head 286. From even, the base 294 has a rounded, drop-shaped shape.
- the core 299 of the transmission portion 283 has a thinned portion, in the width direction, at half height.
- the sidewalls of the core 299, adjacent with the recesses 284a and 284b, are curved.
- This transmission portion 283 can be made from an extruded profile bent or made in foundry or forging. Whatever the method of obtaining this transmission portion 283, the realization of a machining of the surface of cam 220 can be made to refine the accuracy of its profile and its curvature around the X axis.
- the transmission portion 283 is formed by an extruded U-shaped section along which the cam surface 220 extends, this profile being curved about the axis of rotation X of the shock absorber.
- the transmission portion has a single recess 284 extending circumferentially about the X axis.
- the transmission portion U comprises a head 286 on which is formed the cam surface 220, and two lateral wings 296a 296b connected by the head 286, the recess being arranged between these wings 296a and 296b. These two wings form the reinforcement of the transmission portion 283.
- the transmission portion when in a plane intersecting the cam surface and comprising the axis of rotation of the damper, the transmission portion has a shape of U (FIG. 33), I (FIGS. 29 and 31), or T or L (not shown), the cam surface 220 is formed on a first portion of the profile and the second portion of the profile forms the reinforcement 290 of the transmission portion 283.
- FIGS. 34 to 36 illustrate an eleventh embodiment of the invention which combines two types of reduced density zones, namely areas of composite material 384 and recessed areas 384a and 384b.
- the reinforcement 390 is arranged here in the body 385 of the transmission portion 383.
- This reinforcement 390 is a reinforcement 393 separated from the skin 386 by the zone of reduced composite density 384.
- the skin 386 and the armature 393 are formed. here in two separate rooms.
- the armature 383 is embedded in the composite material 384 which has been overmolded on the armature.
- the armature In a plane intersecting the cam surface and including the axis of rotation of the damper, the armature has a V-shape.
- the recesses are chamfers 384a 'and 384b' arranged on the corners of the transmission portion opposite to one another. the cam surface 320. These chamfers may extend at least halfway up the transmission portion 383.
- the transmission portion comprises a first zone of reduced density 384, made of composite material, and a second zone of reduced density, namely recesses, in particular chamfers 384a 'and 384b'.
- torsion damper in the context of a double damping flywheel, but such a torsion damper can be installed on any suitable device.
- torsion dampers can equip the clutch friction, in the case of a manual or robotic transmission, or the locking clutches, also called “lock-up” clutches, equipping the hydraulic coupling devices, in the case of an automatic transmission.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Vibration Dampers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1653460A FR3050246B1 (fr) | 2016-04-19 | 2016-04-19 | Amortisseur de torsion |
| PCT/EP2017/059190 WO2017182469A1 (fr) | 2016-04-19 | 2017-04-18 | Amortisseur de torsion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3445996A1 true EP3445996A1 (fr) | 2019-02-27 |
Family
ID=57590554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17717452.1A Withdrawn EP3445996A1 (fr) | 2016-04-19 | 2017-04-18 | Amortisseur de torsion |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3445996A1 (fr) |
| CN (1) | CN109312816B (fr) |
| FR (1) | FR3050246B1 (fr) |
| WO (1) | WO2017182469A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021052874A1 (fr) * | 2019-09-20 | 2021-03-25 | Koninklijke Philips N.V. | Mécanisme d'amortissement, dispositif de bobine rf et appareil d'irm |
| US12110936B2 (en) * | 2020-08-18 | 2024-10-08 | Illinois Tool Works Inc. | Silicone free rotational spring hinge dampener |
| DE102021106366A1 (de) * | 2021-03-16 | 2022-09-22 | Schaeffler Technologies AG & Co. KG | Radialhebelfeder für einen Drehschwingungsdämpfer und Drehschwingungsdämpfer |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8202183B2 (en) * | 2006-07-07 | 2012-06-19 | Dayco Europe S.R.L. | Pulley assembly |
| FR2938030B1 (fr) * | 2008-11-05 | 2011-11-25 | Valeo Embrayages | Dispositif de transmission de couple. |
| FR3000155B1 (fr) * | 2012-12-21 | 2015-09-25 | Valeo Embrayages | Amortisseur de torsion pour un dispositif de transmission de couple d'un vehicule automobile |
| FR3024759B1 (fr) * | 2014-08-08 | 2020-01-03 | Valeo Embrayages | Amortisseur, notamment pour un embrayage d'automobile |
| FR3024758B1 (fr) * | 2014-08-08 | 2019-01-25 | Valeo Embrayages | Amortisseur, notamment pour un embrayage d'un vehicule automobile |
| FR3026802B1 (fr) * | 2014-10-01 | 2017-02-17 | Valeo Embrayages | Amortisseur de torsion a lame |
| FR3031365B1 (fr) * | 2015-01-07 | 2018-05-25 | Valeo Embrayages | Amortisseur, notamment pour un embrayage d'un vehicule automobile |
-
2016
- 2016-04-19 FR FR1653460A patent/FR3050246B1/fr not_active Expired - Fee Related
-
2017
- 2017-04-18 EP EP17717452.1A patent/EP3445996A1/fr not_active Withdrawn
- 2017-04-18 WO PCT/EP2017/059190 patent/WO2017182469A1/fr not_active Ceased
- 2017-04-18 CN CN201780037916.6A patent/CN109312816B/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017182469A1 (fr) | 2017-10-26 |
| CN109312816A (zh) | 2019-02-05 |
| FR3050246A1 (fr) | 2017-10-20 |
| FR3050246B1 (fr) | 2018-04-27 |
| CN109312816B (zh) | 2021-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3332147B1 (fr) | Dispositif d'amortissement d'oscillations de torsion | |
| WO2013174616A1 (fr) | Dispositif de transmission de couple pour vehicule automobile | |
| WO2013117841A1 (fr) | Dispositif d'amortissement pendulaire | |
| EP2678583B1 (fr) | Amortisseur de torsion pour un embrayage | |
| FR2986591A1 (fr) | Dispositif d'amortissement pendulaire pour une transmission de vehicule automobile | |
| WO2016050612A1 (fr) | Amortisseur de torsion a lame | |
| WO2016050611A1 (fr) | Amortisseur de torsion a lame | |
| EP3445996A1 (fr) | Amortisseur de torsion | |
| EP0859920B1 (fr) | Double volant amortisseur, notamment pour vehicule automobile, comportant des moyens perfectionnes d'amortissement par friction des vibrations | |
| WO2019020808A2 (fr) | Amortisseur de torsion a butee elastique de fin de course | |
| FR3029583A1 (fr) | Dispositif d’amortissement a pendule pour dispositif de transmission de couple de vehicule automobile | |
| WO2000020777A9 (fr) | Double volant amortisseur, notamment pour vehicule automobile | |
| WO2016198452A1 (fr) | Amortisseur de torsion | |
| EP3205901B1 (fr) | Amortisseur de torsion | |
| EP4259950A1 (fr) | Module pre-amortisseur avec moyens de verrouillage | |
| FR2781266A1 (fr) | Disque d'embrayage pour un embrayage a friction d'un vehicule automobile | |
| EP4092290B1 (fr) | Dispositif d amortissement pendulaire | |
| EP3212951B1 (fr) | Disque d'embrayage pour embrayage a friction | |
| FR3060690A1 (fr) | Amortisseur de torsion et dispositif de transmission de couple comprenant un tel amortisseur | |
| FR3055035A1 (fr) | Amortisseur de torsion et dispositif de transmission de couple comprenant un tel systeme | |
| EP2492539B1 (fr) | Amortisseur de torsion pour un embrayage | |
| FR3122712A1 (fr) | Composant d'arret axial pour organe du roulement et procede de fabrication d’un limiteur de couple comprenant un tel composant d'arret axial | |
| FR2784429A1 (fr) | Double volant amortisseur, notamment pour vehicule automobile | |
| EP4019803A1 (fr) | Disque d'embrayage à bras flexibles | |
| FR2753764A1 (fr) | Amortisseur de torsion a piece de transmission a doigts, notamment friction d'embrayage pour vehicule automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20181116 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20191121 |
|
| P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230528 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20230725 |