EP4457446A1 - Ensemble d'actionnement et actionneur pour groupe motopropulseur - Google Patents
Ensemble d'actionnement et actionneur pour groupe motopropulseurInfo
- Publication number
- EP4457446A1 EP4457446A1 EP22843321.5A EP22843321A EP4457446A1 EP 4457446 A1 EP4457446 A1 EP 4457446A1 EP 22843321 A EP22843321 A EP 22843321A EP 4457446 A1 EP4457446 A1 EP 4457446A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plunger
- shock absorber
- magnetic
- actuator
- axial zone
- 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.)
- Pending
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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D27/10—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings
- F16D27/108—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D27/10—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings
- F16D27/118—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with interengaging jaws or gear teeth
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/081—Magnetic constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/088—Electromagnets; Actuators including electromagnets with armatures provided with means for absorbing shocks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D2027/007—Bias of an armature of an electromagnetic clutch by flexing of substantially flat springs, e.g. leaf springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D2027/008—Details relating to the magnetic circuit, or to the shape of the clutch parts to achieve a certain magnetic path
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2127/00—Auxiliary mechanisms
- F16D2127/02—Release mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2300/00—Special features for couplings or clutches
- F16D2300/14—Clutches which are normally open, i.e. not engaged in released state
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/102—Actuator
- F16D2500/1021—Electrical type
- F16D2500/1022—Electromagnet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/104—Clutch
- F16D2500/10406—Clutch position
- F16D2500/10412—Transmission line of a vehicle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/104—Clutch
- F16D2500/10443—Clutch type
- F16D2500/10462—Dog-type clutch
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D27/02—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings
- F16D27/09—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings and with interengaging jaws or gear-teeth
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D27/14—Details
Definitions
- the invention relates to the field of electromagnetic actuation assemblies, in particular the field of electromagnetic actuators, in particular in the field of vehicle powertrains.
- the document US2015114786 discloses a differential type transmission system.
- the transmission system comprises a mobile differential box in rotation around an axis A which is equipped with a toothed wheel driven by a motor of the vehicle. Inside the housing are housed a bearing crown guided in rotation in the housing, two satellite gears which are rotatably mounted on the bearing crown around an axis B perpendicular to the axis A, and two planetary gears which each mesh with the two satellite gears and which are each integral in rotation with a wheel shaft.
- the transmission system comprises a coupling device which makes it possible either to couple the casing of the transmission system to the bearing crown in order to allow transmission and distribution of the engine torque to the two wheel shafts of the axle or to uncouple them in order to interrupt the transmission of torque between the engine and the wheel shafts.
- the coupling device is a clutch device. It comprises a first coupling part having an annular portion arranged outside the casing and projecting elements which extend from the annular portion and pass through orifices provided in the casing, which makes it possible to secure rotating the first coupling part and the housing.
- the protruding elements comprise teeth intended to cooperate with complementary grooves provided on the bearing ring.
- the first coupling part is axially movable relative to the housing between an uncoupled position and a coupled position in which the teeth of the first coupling part mesh with the grooves of the carrier ring.
- An electromagnetic actuator is capable of exerting an axial force on the first coupling part so as to move it from the uncoupled position to the coupled position.
- the actuator includes a plunger that moves axially between first and second axial positions associated with the engaged and disengaged positions of the dog clutch.
- An idea underlying the invention is to propose a less noisy electromagnetic actuation assembly
- the invention provides an electromagnetic actuation assembly comprising
- an actuator comprising a magnetic frame fitted with an annular housing extending circumferentially around a reference axis (X),
- a coil arranged in the annular housing of the magnetic carcass, and a plunger adapted to be moved axially between a first axial zone and a second axial zone, relative to the magnetic carcass, depending on the magnetic field produced by the coil when that it is supplied with current,
- first shock absorber mounted either on the plunger, or on the magnetic carcass or on a support of the actuator on which the actuator is fixed, the first shock absorber (61) being arranged so as to be deformed by the displacement of the plunger (28) when the plunger arrives in the first axial zone (Z1).
- the first and second axial zones being zones occupied by the diver when he reaches the end of his travel, the deformation of the first shock absorber makes it possible to slow down the diver or to dissipate the vibrations generated when the diver arrives in the zones end of race.
- the first and second axial zones are associated with the retracted position (or passive position) of the plunger and with the extended position (or active position) of the plunger, or vice versa.
- the damping assembly may also include one or more of the following characteristics:
- the first shock absorber is arranged so as to brake the plunger before contact between the plunger on the one hand and the magnetic carcass or the support of the actuator on the other hand, when the plunger enters the first axial zone in the first axial direction.
- the coil is annular and centered on the reference axis.
- the magnetic carcass and the plunger are configured so that the plunger can slide axially in the magnetic carcass.
- the shapes of the magnetic carcass and of the plunger provide a sliding connection in the axial direction.
- the electromagnetic actuation assembly comprises a spring, and the electromagnetic actuation assembly is configured so that when the coil is electrically powered, in particular beyond a first threshold intensity , the plunger moves, against an elastic return force exerted axially by the spring, towards an active position corresponding to one of the first axial zone and the second axial zone, the elastic return force being suitable to return the plunger to a passive position corresponding to the other of the first axial zone and the second axial zone when the coil is no longer electrically powered, or below the first threshold intensity.
- the first axial zone occupied by the plunger corresponds to the active position of the plunger and the actuation assembly is configured so that, when the plunger moves in the first axial zone according to the first axial direction, the first shock absorber deforms between a first position of the plunger in which the first shock absorber begins to be compressed axially, directly or indirectly between the plunger and the magnetic frame or between the plunger and the support of the actuator , and a second position of the plunger in which the plunger and the magnetic carcass, or the plunger and the support of the actuator, bear rigidly against each other, the bearing being provided between a first abutment surface of the plunger on the one hand and a second abutment surface of the magnetic carcass or of the actuator support on the other hand, the abutment surface of the plunger on the one hand and the abutment surface of the magnetic carcass or of the support of the actuator on the other hand being spaced from each other when the plunger is in the first position of the first axial zone.
- the first abutment surface is metallic and magnetic and the second abutment surface is metallic and magnetic.
- adhesion by magnetization can be obtained and the intensity of the coil can be lowered in the active position.
- the first axial zone occupied by the diver corresponds to the passive position of the diver.
- the first shock absorber is made totally or partly from an elastomeric material, such as rubber, for example a hydrogenated nitrile rubber (HNBR).
- HNBR hydrogenated nitrile rubber
- the first shock absorber is an elastic washer, such as a Belleville washer.
- the first shock absorber is arranged so as to be compressed between the plunger and the magnetic casing of the actuator.
- the first shock absorber is worn by the diver.
- the first shock absorber is arranged so as to bear against a bearing surface of the magnetic carcass or of the support of the actuator when the plunger is in the first axial zone.
- the first shock absorber is carried by the magnetic carcass or the support of the actuator.
- the plunger, the magnetic carcass or the support of the actuator comprises a cavity whose shape is complementary to that of the first shock absorber, the first shock absorber being arranged partly in the cavity.
- the magnetic carcass comprises a box defining the annular housing and a magnetic cover partially closing the box, the imprint being formed on a radially internal portion of the magnetic cover.
- the plunger comprises a shoulder separating an inner portion of the plunger and an outer part of the plunger which is capable of coming out of the actuator.
- the contact between the plunger and the magnetic frame or the actuator support is made through this shoulder.
- the first shock absorber is mounted directly on the magnetic carcass.
- the first shock absorber is arranged so as to bear against a surface of the plunger when the plunger is in the first axial zone.
- the first shock absorber comprises a ring arranged around the reference axis X and radial tabs, the end of the tabs being intended to be in contact with the diver when the diver enters the first axial zone.
- the radial lugs extend radially from the ring inwards.
- the electromagnetic actuation assembly comprises at least one clearance intended to accommodate part of the material of the first shock absorber which is displaced during its deformation.
- the electromagnetic actuation assembly comprises comprising a second shock absorber, the second shock absorber being capable of deforming to limit the noise generated by the contact between the plunger on the one hand and the magnetic carcass or the actuator support on the other hand in the second axial zone.
- the second shock absorber is capable of deforming to brake the diver when the diver enters, in a second axial direction opposite to the first axial direction, into the second axial zone,
- the second axial zone occupied by the diver corresponding to the passive position of the diver.
- the actuation assembly is configured so that, when the plunger moves in the second axial zone in the second axial direction, the second shock absorber is deformed between a third position of the plunger in which the second shock absorber begins to be compressed axially, directly or indirectly between the plunger and the magnetic frame or between the plunger and the support of the actuator, and a fourth position of the plunger in which the plunger and the magnetic frame, or the plunger and the support of the actuator, are rigidly supported against each other.
- the first shock absorber is arranged so as to dissipate the vibrations generated by the contact between the plunger on the one hand and the magnetic carcass or the support of the actuator on the other hand.
- the first shock absorber comprises an axial stack of metal plates, for example sheet metal.
- the magnetic carcass comprises a box defining the annular housing and a magnetic cover partially closing the box, the magnetic cover of the magnetic carcass being formed at least in part by this stack of metal plates.
- the plates can be stacked directly on top of each other so that the shock vibrations between the magnetic carcass and the plunger are dissipated by shear between the sheets.
- the first shock absorber comprises at least one layer of soundproofing material interposed between two metal plates.
- This soundproofing material can be a polymer or an elastomer.
- the magnetic cover is formed by two metal plates between which extends a layer of soundproofing material.
- the first shock absorber is formed on a part separate from the coil or from the overmolding which envelops the coil.
- the preceding characteristics relating to the first damper can also be applied to the second damper.
- the invention also relates to a transmission system for a vehicle powertrain, in particular an electric powertrain, the transmission system comprising an input shaft and an output shaft, the transmission system comprising a set of electromagnetic actuation as described above, the electromagnetic actuation assembly being able to disengage a first coupling part from a second coupling part, for example from a dog clutch device, so as to interrupt the transmission torque between the input shaft and the output shaft.
- Figure 1 is a block diagram of the electromagnetic actuation assembly according to a first embodiment.
- Figure 2 is a block diagram of the first shock absorber of Figure 1.
- Figure 3 is a schematic sectional view of a transmission system comprising an actuation assembly according to a third embodiment.
- Figure 4 is an exploded perspective view showing the cover and the first shock absorber of the third embodiment.
- Figure 5 is a perspective view of part of the cover of the third embodiment.
- Figure 6 is a perspective view of the plunger and the second shock absorber of the third embodiment, the view being exploded on the right part and showing the assembled state on the left part.
- Figure 7 is a detail sectional view of the plunger and the second shock absorber of the third embodiment.
- Figure 8 is a schematic view of a fourth embodiment.
- Figure 9 is a schematic view of a fifth embodiment.
- Figure 10 is a schematic view of a sixth embodiment.
- Figure 11 is a schematic view of a seventh embodiment.
- Figure 12 is a schematic view of an eighth embodiment.
- Figure 13 is a schematic view of a ninth 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 transmission system.
- the "radial” orientation is directed orthogonally to the reference axis X which determines the "axial” orientation.
- the “circumferential” orientation is directed orthogonally to the X axis and orthogonally to the radial direction.
- Figures 1 and 2 schematically illustrate the invention.
- an actuator 24 comprising a magnetic carcass 25 provided with an annular housing extending circumferentially around a reference axis X, a coil 27 arranged in the annular housing of the magnetic carcass, and a plunger 28 adapted to be moved axially between a first axial zone Z1 and a second axial zone Z2, with respect to the magnetic carcass 25, depending on the magnetic field produced by the coil when the latter is supplied with current.
- a first shock absorber 61 mounted on the magnetic carcass is capable of deforming to brake the plunger 28 when the latter enters, in a first axial direction d1, in the first axial zone Z1.
- the first shock absorber 61 can have an annular shape around the reference axis X.
- a clearance 70 such as a groove can be provided near the first shock absorber, in particular on the bearing surface of the first shock absorber. , so as to accommodate the material of the first damper when the first damper deforms.
- FIG. 3 illustrates in part a transmission system 1 with a first and second shock absorber 61, 60.
- the transmission system here comprises a differential which is used, in a transmission chain of a vehicle, to transmit and distribute a torque from a motor, not shown, to two wheel shafts 2, 3 of an axle of a motor vehicle.
- Such a transmission system can, for example, be part of a secondary transmission chain able to transmit torque from a secondary motor of the vehicle, such as an electric motor, to a rear or front axle of a vehicle while that a primary transmission chain is capable of transmitting torque from a main motor, for example a heat engine, to the wheel shafts of another axle of the vehicle.
- a secondary motor of the vehicle such as an electric motor
- a primary transmission chain is capable of transmitting torque from a main motor, for example a heat engine
- the transmission system can also take a form other than that of a differential.
- the transmission system comprises a first element 4, rotatable around the axis X, and intended to be driven by a motor, such as an electric motor, not shown, a second element 5, also rotatable around the axis X and intended to drive the wheel shafts 2, 3, and a coupling device 6 capable of selectively coupling or uncoupling the first element 4 and the second element 5.
- a motor such as an electric motor, not shown
- a second element 5 also rotatable around the axis X and intended to drive the wheel shafts 2, 3
- a coupling device 6 capable of selectively coupling or uncoupling the first element 4 and the second element 5.
- the first element 4 comprises a toothed wheel 7 which is intended to be driven by the motor via a reduction gear train, not shown.
- This first element 4 also comprises a housing 8 which is fixed integral in rotation with the toothed wheel 7 by means of fixing elements not shown such as screws or nuts.
- the second element 5 is shown schematically in Figure 3. It comprises a carrier ring 13 of annular shape which is guided in rotation, around the axis X, inside the housing 8.
- the case 8 comprises an internal cylindrical portion cooperating with a cylindrical outer surface of bearing ring 13 in order to guide it in rotation with respect to case 8.
- Second element 5 further comprises two satellite gears 14, which are rotatably mounted on the ring carrier 13 around an axis Z, perpendicular to the axis X.
- the two satellite gears 14, 15 each comprise a bevel gear which meshes with a complementary bevel gear of two planetary gears 16, 17.
- the two planetary gears 16, 17 are mobile in rotation around the axis X and are each integral in rotation with one of the two wheel axles 2, 3.
- the carrier ring 13, the planet gears 14, 15 and the planetary gears 16, 17 form a differential allowing the two wheel shafts 2, 3 to rotate at different speeds.
- the transmission system 1 comprises a coupling device 6 which, in the coupled position, makes it possible to transmit a torque between the first element 4 and one elements of the second element 5, here the bearing crown 13.
- the transmission system makes it possible, when the coupling device 6 is in the coupled position, to transmit a torque from the engine to the wheel shafts 2, 3 by exercising the function differential allowing different speeds of rotation of the wheel shafts 2, 3.
- the coupling device is configured to couple the first element 4 with one of the two planetary gears 16, 17. This planetary gear then has two sets of teeth, preferably axially back to back. One cooperates with the planet pinions, the other cooperates with the first coupling part.
- the bearing crown 13 is integral in rotation with the housing 8 and the coupling device then aims to prevent the two wheel shafts 2, 3 from rotating at different speeds (locking of the differential).
- the coupling device 6 comprises a first coupling part 18 which is integral in rotation with the housing 8 while being axially movable along the axis X with respect to said box 8.
- the first coupling part 18 is movable between an uncoupled position and a coupled position.
- the uncoupled position the first coupling part 18 is uncoupled from a second coupling part 19 integral in rotation with the bearing crown 13 so that the transmission of torque is interrupted between the housing 8 and the bearing crown 13.
- the first coupling part 18 is coupled to the second coupling part 19, which allows the transmission of torque between the housing 8 and the bearing ring 13.
- the coupling device 6 is a clutch device.
- one of the first and second coupling part 18, 19 has teeth while the other has corresponding grooves in which said teeth are engaged when the first coupling part 18 is in the coupled position.
- the second coupling part 19 is formed integrally with the bearing ring 13.
- teeth or grooves are made in the side face of the bearing crown 13 which is turned facing the first coupling part 18.
- the coupling device could be of another type and in particular be a friction coupling device.
- the first coupling part 18 comprises an inner portion 20 which is housed inside the housing 8, an outer portion 21 which is positioned outside the housing 8 and portions link 22 which are regularly distributed around the axis X and which each pass through a corresponding through opening 23 provided in the housing 8, which makes it possible to fasten the first coupling part 18 to the housing 8 in rotation while allowing relative axial displacement between the first coupling part 18 and the housing 8.
- the inner portion 20 is annular while the outer portion 21 has lugs extending axially in the extension of the connecting portions 22.
- the structure is inverted and the outer portion 21 is annular while the inner portion 20 comprises a plurality of axially oriented lugs extending in the extension of the connecting portions 22.
- the actuator 24 makes it possible to move the first coupling part 18 axially.
- the actuator 24 comprises a magnetic carcass 25 which is intended to be mounted on the casing of the transmission chain of the vehicle, fixed to the chassis.
- the magnetic carcass 25 is thus fixed in rotation with respect to the reference axis X. It is fixed to its support by means of fasteners not shown.
- the magnetic carcass 25 comprises an internal skirt 26 which comprises a cylindrical guide portion which cooperates with a corresponding cylindrical portion of the housing 8 and thus allows the rotation of the housing 8 relative to the fixed magnetic carcass 25 of the actuator 24.
- the actuator 24 is an electromagnetic actuator. It comprises the magnetic carcass 25 having an internal housing and a piston 28 which is axially movable inside the internal housing between a retracted position and an extended position illustrated in FIG. 3.
- the magnetic carcass 25 comprises a housing defining the internal housing and a magnetic cover 29 which partially closes the internal housing and which comprises a stop, to define the deployed position of the piston 28, after compression of the first shock absorber 61.
- the case has a U shape when it is observed in a plane comprising the reference axis X.
- the piston 28 comprises a body 31, of annular shape, of ferromagnetic material, such as iron or steel for example. The piston 28 comes into abutment against the magnetic cover 29.
- the piston 28 further comprises a non-magnetic end piece 32, also of annular shape, which is fixed to the body 31 of the piston 28 and by which the actuation force is transmitted to the first coupling part 18.
- the non-magnetic tip 32 of the piston 28 thus makes it possible to avoid undesirable leaks of magnetic flux towards the other components of the coupling device 6.
- the coil 27 When the coil 27 is energized with an intensity greater than a first threshold intensity, it moves the piston 28 from the retracted position to the deployed position. When the piston 28 is in the deployed position, the magnetic cover 29 exerts an attraction on the body 31 of the piston 28, which makes it possible to maintain it in position. deployed. The supply current of coil 27 can then be reduced as long as it remains greater than second threshold current S2 which is lower than first threshold current S1.
- an elastic return means in other words a spring, described below, which returns the first coupling part 18 towards the uncoupled position, makes it possible to overcome the force of attraction between the magnetic cover 29 and the body 31 of the piston 28 and to return the piston 28 from the extended position to the retracted position.
- the coupling device 6 comprises a disc 36 which is formed in one piece and is fixed axially to the first coupling part 18.
- the disc 36 provides numerous functionalities described below and allows thus limiting the cost, complexity and size of the coupling device 6.
- the disc 36 performs the function of target 34.
- the disc comprises an annular portion 37, provided at the radially outer periphery of the disc 36. This annular portion 37 is arranged axially opposite the sensor 35 and thus forms the target 34.
- the coupling device 6 comprises a contactless sensor, which is positioned axially opposite the target 34 and which is configured to deliver a signal representative of the axial distance between the target 34 and the sensor.
- the sensor is able to deliver a signal representative of the position of the first coupling part 18, such a signal being used to ensure the reliability of the control of the coupling device 6 and in particular to check that the device coupling 6 is indeed in the uncoupled position or in the coupled position.
- the sensor is for example a hall effect sensor.
- the disc 36 performs the function of elastic return means making it possible to return the first coupling part 18 to the uncoupled position when the piston 28 of the actuator 24 returns to the retracted position.
- the disc 36 comprises elastic blades (not visible in the sectional view of Figure 3) which each have a free end which bears against a support zone of the housing 8 and a proximal end connected to the rest of the disk 36.
- the elastic blades thus each form an elastic return portion which is configured to flex axially during the movement of the first coupling part 18 from the uncoupled position to the coupled position. In reaction, the elastic blades exert a return force able to return said first coupling part 18 to the uncoupled position.
- the disc 36 also makes it possible to transmit the actuation force between the piston 28 of the actuator 24 and the first coupling part 18.
- the first shock absorber 61 mounted on the magnetic cover 29 of the magnetic carcass 25 is capable of deforming to brake the plunger 28 when the plunger 28 enters, in the first axial direction d1, in a first axial zone Z1, according to the block diagram in figure 1.
- the first axial zone Z1 is an end-of-travel zone of the plunger 28 in which the stroke of the plunger 28 is first slowed down by the first shock absorber 61 then stopped by a stop in the deployed position of the plunger 28.
- a second shock absorber 60 is placed on the plunger 28.
- the second shock absorber 60 mounted on the plunger 28 is capable of deforming to brake the plunger 28 when the plunger 28 enters, in the second axial direction d2, into a second axial zone Z2.
- the second axial zone Z2 is an end-of-stroke zone of the plunger in which the stroke of the plunger 28 is first slowed down by the first shock absorber 60 then stopped by a stop in the retracted position of the plunger.
- the first shock absorber 61 has a general annular shape extending around the reference axis X. It comprises a ring 611 and lugs 612 extending radially. The diameter of the ring 611 is greater than the outer diameter of the end of the plunger facing the magnetic cover 29 and these tabs extend from the ring 61 1 radially inwards.
- the magnetic cover 29 on which the first shock absorber 61 is mounted comprises an imprint 291 whose shape is complementary to that of the first shock absorber 61 .
- the first shock absorber can be maintained on the hood by form complementarity. Glue can be used alternatively or additionally to maintain the first shock absorber 61 on its support. Alternatively, the first shock absorber can be molded onto the cover 29.
- the recess 291 comprises a circular groove 292 and a plurality of radial grooves 293 each intended to receive a radial leg of the first shock absorber 61 .
- the imprint is placed in the radially internal part of the magnetic cover.
- the radially inner part of the magnetic cover is thinner so that the first shock absorber 61 projects axially from the magnetic cover 29.
- the plunger initially comes into contact with the first shock absorber. shock 61, then with the magnetic cover 29.
- the second shock absorber 60 also has a generally annular shape extending around the reference axis X. It comprises a first ring 601 arranged on a rear face of the plunger 28.
- the plunger comprises radial teeth 281 arranged at the edge of the rear face and between which fingers 602 of the second shock absorber 60 extend.
- a second ring 603 is arranged around the plunger 28 and is connected to the first ring 601 via the fingers 602.
- the first ring 601 of the second shock absorber 60 is arranged to come into contact with the magnetic frame 25 and brake the plunger 28.
- the plunger 28 on which the second shock absorber 60 is mounted comprises a recess 285 whose shape is complementary to that of the second shock absorber 60.
- the cavity 285 of the plunger comprises a first circular groove 286 arranged on the rear face of the plunger.
- the first circular groove 286 receives the first ring 601.
- the recess of the plunger comprises a second circular groove 287 arranged on the external cylindrical surface of the plunger.
- the second circular groove 287 receives the second ring 603.
- the cavity 285 of the plunger also includes connecting grooves 288 connecting the two circular grooves.
- the second shock absorber can be rigidly mounted on the plunger.
- the second shock absorber can be deformed to be mounted on the plunger or else molded onto the plunger.
- stopping the plunger in its retracted position can also be done in two stages, namely a first contact between the magnetic carcass 25 and the second shock absorber 60 in a first stage and a second contact between the magnetic carcass 25 and the plunger 28 in a second time.
- the stop between the plunger 28 and the magnetic carcass 25 can be made in particular on the rear face of the radial teeth, as can be seen in fig 7.
- this form of shock absorber can also replace the first shock absorber described above on the front part of the plunger 28 to brake the plunger in the deployed position. If necessary, the front part of the plunger 28 comprises a corresponding imprint.
- FIG 8 schematically shows another embodiment in which the plunger 28 comprises two tubular parts 288 and 289.
- One of them 288 is formed in a magnetic material. This part can be driven axially in rotation by the magnetic field produced by the coil 27.
- the other of them 289 is formed in a non-magnetic material.
- the two tubular parts are rigidly fixed one inside the other.
- the plunger 28 is arranged radially inside the coil 27 and the non-magnetic part 289 is mounted radially inside the magnetic part 288.
- the first shock absorber 61 is here arranged axially facing the non-magnetic tubular part.
- the first shock absorber 61 is arranged on the radially internal part of the magnetic cover 29. It may have the shape of a ring arranged around the reference axis X. As a variant, it may be a plurality of damping pads arranged circumferentially around the reference axis X.
- the non-magnetic part 289 of the plunger 28 presses on the first shock absorber 61 and the plunger 28 is thus braked before the magnetic tubular part 288 touches the magnetic cover 29 of the actuator.
- first annular shock absorber 61 In the case of a first annular shock absorber 61, it can be mounted in a circular groove whose layout makes it possible to accommodate part of the material of the first shock absorber when it is deformed.
- the groove can be flared, as can be seen in Figure 8.
- Figure 9 schematically shows another embodiment in which the retracted position of the plunger is damped.
- the second shock absorber 60 is arranged inside the casing of the actuator, on the rear wall of the casing to dampen the return of the plunger 28 to the retracted position.
- FIG 10 schematically shows another embodiment in which the deployed position of the plunger is damped.
- the first shock absorber 61 is disposed on the non-magnetic part 289 of the plunger 28.
- the first damper 61 is arranged at the level of the shoulder of the non-magnetic part of the plunger separating the portion of the plunger 28 intended to project from the actuator in the deployed position, and the portion of the plunger which remains inside the magnetic carcass 25 regardless of the position of the plunger and on which is fixed the magnetic part of the plunger.
- the clearance here takes the form of a groove formed on the non-magnetic part 289 of the plunger 28 and radially inside the first shock absorber 61 .
- the first shock absorber 61 comes into contact with the magnetic cover 29 before the magnetic part of the plunger 28 and the plunger 28 is thus braked.
- FIG. 11 schematically shows another embodiment.
- This is a transmission system in which a coupling device is configured to ensure or interrupt the transmission of a torque between a hub 801 and a shaft 802.
- the coupling device comprises a slider 810 which is in taken with an external toothing 803 of the hub 801 and which is able to also come into engagement with an external toothing 804 of the external shaft 802 to transmit a torque between the hub 801 and the shaft 802.
- the player moves axially while being driven towards the shaft 802 by the plunger 28 (drawn to the right in FIG. 11).
- the first shock absorber 61 is arranged on the support 900 on which the magnetic frame 25 of the actuator 24 is mounted. This is a 900 crankcase part of a powertrain.
- the first shock absorber and the actuator together form an actuation assembly.
- the first shock absorber 61 is arranged to dampen 28 the diver when he arrives in the first axial zone which here corresponds to the extended position of the diver. Direct contact between the plunger 28 and the magnetic cover 29 is then possible when the first damper 61 has been deformed and the plunger 28 has continued its course as far as the cover 29. The plunger 28 is then in abutment. A magnetization effect between the plunger 28 and the magnetic cover 29 then makes it possible to lower the intensity of the current in the coil 27 while maintaining the plunger in the first axial zone. The intensity is then between a second threshold S2 below which a spring brings the player back to the disconnection position and the first intensity threshold S1.
- the contact interface between the plunger and the magnetic cap advantageously has a frustoconical shape whose tip of the cone is turned in the first axial direction D1, that is to say in the direction followed by the plunger 28 to come into contact with the magnetic cover 29.
- the first shock absorber 61 can again be made of an elastomeric material such as rubber. It can have a ring shape around the reference axis X or else be composed of a plurality of studs distributed around the reference axis X.
- the first shock absorber can also take the form of an elastic washer such as a Belleville washer.
- Figure 12 schematically shows another type of embodiment in which the shock vibrations between the plunger 28 and the magnetic cover 29 are dissipated by the first shock absorber 61 .
- the first shock absorber 61 is here integrated into the magnetic cover 29 of the magnetic carcass 25.
- the magnetic frame 25 comprises a housing defining the annular housing and a magnetic cover 29 partially closing the housing.
- the magnetic cover 29 is made up of an axial stack of metal plates, for example made of sheet metal, which act as a shock absorber.
- the plates can be stacked directly on top of each other so that the vibrations of the shock between the magnetic carcass 25 and the plunger 28 are dissipated by shear between the sheets, as shown in the figure 12.
- the deformation of the damper occurs substantially at the same time as the contact between the plunger and the magnetic cover 29 of the magnetic carcass 25.
- the plate of the magnetic cover 29 furthest from the coil 27 is fixed to the housing, in particular by welding, fitting or crimping.
- the other plates, in particular at least the two plates of the magnetic cover 29 closest to the coil 27 are held axially between a shoulder of the box and the cover plate furthest from the coil 27.
- the first shock absorber may also comprise a layer of soundproofing material interposed between two metal plates.
- the magnetic cover 29 may be formed by two metal plates between which extends a layer of soundproofing material (Figure 13).
- This soundproofing material can be a polymer or an elastomer.
- This cap can for example be made with a multi-layer material or sandwich material marketed under the name Antiphon®.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
- Electromagnets (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2114629A FR3131354B1 (fr) | 2021-12-29 | 2021-12-29 | Ensemble d’actionnement et actionneur pour groupe motopropulseur |
| PCT/EP2022/087417 WO2023126295A1 (fr) | 2021-12-29 | 2022-12-22 | Ensemble d'actionnement et actionneur pour groupe motopropulseur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4457446A1 true EP4457446A1 (fr) | 2024-11-06 |
Family
ID=80736004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22843321.5A Pending EP4457446A1 (fr) | 2021-12-29 | 2022-12-22 | Ensemble d'actionnement et actionneur pour groupe motopropulseur |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250062059A1 (fr) |
| EP (1) | EP4457446A1 (fr) |
| CN (1) | CN118891456A (fr) |
| FR (1) | FR3131354B1 (fr) |
| WO (1) | WO2023126295A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4236460B2 (ja) * | 2002-12-25 | 2009-03-11 | サンデン株式会社 | 動力伝達機構 |
| JP5799058B2 (ja) * | 2013-07-30 | 2015-10-21 | 三桜工業株式会社 | 負圧ポンプ及びシリンダヘッドカバー |
| DE102013111891B4 (de) | 2013-10-29 | 2015-05-13 | Gkn Driveline International Gmbh | Antriebsanordnung mit einer Kupplung und Verfahren zur Montage einer solchen Antriebsanordnung |
| KR101609383B1 (ko) * | 2014-08-20 | 2016-04-06 | 주식회사 유니크 | 솔레노이드 장치 및 이를 포함하는 클러치 어셈블리 |
| US9478339B2 (en) * | 2015-01-27 | 2016-10-25 | American Axle & Manufacturing, Inc. | Magnetically latching two position actuator and a clutched device having a magnetically latching two position actuator |
-
2021
- 2021-12-29 FR FR2114629A patent/FR3131354B1/fr active Active
-
2022
- 2022-12-22 WO PCT/EP2022/087417 patent/WO2023126295A1/fr not_active Ceased
- 2022-12-22 EP EP22843321.5A patent/EP4457446A1/fr active Pending
- 2022-12-22 CN CN202280088394.3A patent/CN118891456A/zh active Pending
- 2022-12-22 US US18/724,056 patent/US20250062059A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20250062059A1 (en) | 2025-02-20 |
| FR3131354B1 (fr) | 2024-02-09 |
| FR3131354A1 (fr) | 2023-06-30 |
| CN118891456A (zh) | 2024-11-01 |
| WO2023126295A1 (fr) | 2023-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3366938B1 (fr) | Dispositif de rappel elastique pour mecanisme d'embrayage humide et embrayage humide comprenant un tel dispositif de rappel elastique | |
| EP0715695B1 (fr) | Volant amortisseur notamment pour vehicule automobile | |
| EP2990678A1 (fr) | Dispositif d'embrayage pour un véhicule automobile | |
| EP0237373A1 (fr) | Volant amortisseur pour transmission, notamment pour véhicule automobile | |
| WO2017149161A1 (fr) | Systeme de transmission de couple | |
| WO2023126295A1 (fr) | Ensemble d'actionnement et actionneur pour groupe motopropulseur | |
| EP0728267B1 (fr) | Volant amortisseur, notamment pour vehicule automobile | |
| FR3009598A1 (fr) | Commande de vitesse a crabots pour boite de vitesses de vehicule | |
| EP4487025B1 (fr) | Mecanisme d'embrayage notamment pour vehicule motorise | |
| EP4308824B1 (fr) | Système de transmission équipé d'un dispositif d'accouplement | |
| WO2009007642A2 (fr) | Embrayage a friction equipe d'un pre-amortisseur comportant des systemes de frottement a hysteresis et a tiroir dependant | |
| WO2002021021A1 (fr) | Appareil d'accouplement hydrocinetique, notamment pour vehicule automobile | |
| WO2022263608A1 (fr) | Dispositif d'actionnement électromagnétique et système de transmission équipé de ce dispositif d'actionnement électromagnétique | |
| FR2836969A1 (fr) | Systeme de commande d'embrayage pour vehicule automobile et dispositif d'entrainement associe | |
| FR3074865B1 (fr) | Amortisseur de torsion a moyens de phasage | |
| EP1688634A1 (fr) | Dispositif de montage d'un palier sur un élément de transmission | |
| EP3628884B1 (fr) | Sous-ensemble pour mecanisme d'embrayage et mecanisme d'embrayage comprenant un tel sous-ensemble | |
| EP3748183A1 (fr) | Procede d'assemblage d'un module d'embrayage d'un vehicule et module d'embrayage assemble a partir de la mise en oeuvre d'un tel procede | |
| EP4448317A1 (fr) | Système de transmission comportant un dispositif d'entraînement différentiel | |
| FR2817601A1 (fr) | Double volant amortisseur pour mecanisme d'embrayage de vehicule automobile | |
| FR3092373A1 (fr) | Double embrayage humide et dispositif de rappel elastique pour un tel double embrayage humide | |
| EP1248919A1 (fr) | Dispositif de transmission de couple, en particulier pour vehicule automobile | |
| WO2006000667A1 (fr) | Demarreur equipe d’un lanceur a roue libre par friction | |
| FR3127792A1 (fr) | Module d'amortissement avec garnitures preassemblees et procede de fabrication d’un tel module d'amortissement | |
| EP1704346B1 (fr) | Double volant amortisseur en particulier 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: 20240624 |
|
| 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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| 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 |