EP3850235A1 - Rotating electrical machine equipped with a connection sleeve incorporating a damper - Google Patents

Rotating electrical machine equipped with a connection sleeve incorporating a damper

Info

Publication number
EP3850235A1
EP3850235A1 EP19766035.0A EP19766035A EP3850235A1 EP 3850235 A1 EP3850235 A1 EP 3850235A1 EP 19766035 A EP19766035 A EP 19766035A EP 3850235 A1 EP3850235 A1 EP 3850235A1
Authority
EP
European Patent Office
Prior art keywords
shaft
damper
grooved
assembly according
connecting sleeve
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
Application number
EP19766035.0A
Other languages
German (de)
French (fr)
Inventor
Arun THILAGANATHAN
Thomas SQUITIERO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Electrification
Original Assignee
Valeo Equipements Electriques Moteur SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Equipements Electriques Moteur SAS filed Critical Valeo Equipements Electriques Moteur SAS
Publication of EP3850235A1 publication Critical patent/EP3850235A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003—Couplings; Details of shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
    • B60K17/24—Arrangements of mountings for shafting
    • 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
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D1/108—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
    • F16D1/116—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling the interengaging parts including a continuous or interrupted circumferential groove in the surface of one of the coupling parts
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1735—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at only one end of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • 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
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D2001/103—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via splined connections

Definitions

  • the present invention relates to a rotary electrical machine provided with a connecting sleeve incorporating a shock absorber.
  • the invention finds a particularly advantageous, but not exclusive, application with reversible high power electric machines which can operate in alternator mode and in motor mode coupled with a reducing element.
  • rotary electrical machines comprise a stator and a rotor secured to a shaft.
  • the stator is mounted in a casing configured to rotate the shaft on bearings by means of bearings.
  • the rotor comprises a body formed by a stack of sheets of metal sheets held in the form of a package by means of a suitable fixing system.
  • the rotor has poles formed for example by permanent magnets housed in cavities formed in the magnetic mass of the rotor.
  • the poles are formed by coils wound around the rotor arms.
  • the stator comprises a body constituted by a stack of thin sheets forming a crown, the inner face of which is provided with notches open towards the inside to receive a winding.
  • the winding is obtained for example from a continuous wire covered with enamel or from conductive elements in the form of pins linked together by welding.
  • the winding comprises phase windings connected in a star or a triangle, the outputs of which are connected to an electronic control module.
  • a high power reversible rotating electrical machine can be coupled, via a connecting piece, to a reducing element.
  • the reducing element may take the form of a vehicle gearbox or a reduction gear mounted on a vehicle train and coupled to the rotary electric machine.
  • the rotary electrical machine is capable of operating in an alternator mode in particular to supply energy to the battery and to the on-board network of the vehicle, and in an engine mode, to ensure the starting of the heat engine, and / or to participate in vehicle traction alone or in combination with the engine.
  • a connecting sleeve of generally tubular shape comprising a first grooved part intended to cooperate with a grooved end of the 'shaft of the rotary electrical machine, and a second grooved part intended to cooperate with a grooved end of a shaft of the reducing element.
  • the connecting sleeve In operation, the connecting sleeve is free to perform translations along its axis. The sleeve stops in translation when it comes into contact with a shoulder on the shaft. The axial play between these two mechanical parts is low and is notably less than 2 mm. The contact between the connecting sleeve and the shaft, which are made of steel, will therefore generate noises and clicks. In an extreme case, the sleeve can even resonate and damage the system.
  • stator in particular surrounding the rotor
  • a front bearing comprising a housing for receiving a bearing ensuring rotational guidance of the shaft
  • the shaft comprising one end projecting axially with respect to the bearing, the end of the shaft comprising splines,
  • connecting sleeve comprising:
  • first grooved part intended to cooperate with the grooved end of the shaft of the rotary electric machine
  • second grooved part intended to cooperate with the grooved end of the shaft of the reducing element
  • a damper arranged axially between the first grooved part and the second grooved part of the connecting sleeve.
  • the invention makes it possible, thanks to the presence of the shock absorber, to avoid impacts between a shaft and the connecting sleeve. This reduces noise and clicks during the operation of the motor vehicle.
  • the damper is disposed axially between the grooved end of the shaft of the rotary electrical machine and the grooved end of the shaft of the reducing element so as to prevent direct axial contact between the end splined on the shaft of the rotating electrical machine and the splined end of the shaft on the reducing element.
  • the damper is interposed axially between the grooved end of the shaft of the rotary electrical machine and the grooved end of the shaft of the reducing element.
  • the damper is disposed outside the grooves of the grooved end of the shaft of the rotary electric machine and / or outside the grooves of the grooved end of the shaft of the reducing element. In other words, the damper does not transmit the torque from the shafts to the sleeve.
  • the damper is made of an elastic material.
  • an axial clearance between the shafts and the shock absorber is less than an axial clearance between a shoulder of the shaft and the connecting sleeve.
  • the damper has a lubricant passage, so that the lubricant can move from the first grooved part to the second grooved part of the connecting sleeve, and vice versa.
  • the damper has an annular shape. According to one embodiment, the damper is arranged in an internal groove of the connecting sleeve.
  • the internal groove of the connecting sleeve axially separates the first grooved part and the second grooved part of the connecting sleeve.
  • the internal groove of the connecting sleeve is arranged axially between the first grooved part and the second grooved part of the connecting sleeve.
  • the connecting sleeve comprises two internal grooves axially spaced from one another and the damper has a U-shaped section whose two branches are inserted respectively in the two annular grooves.
  • said assembly comprises at least one seal disposed at one end of the connecting sleeve.
  • the reducing element is a motor vehicle gearbox.
  • the reducing element is a reduction gear mounted on a train of the vehicle and coupled to the rotary electric machine.
  • the invention also relates to a motor vehicle characterized in that it comprises an assembly as previously defined.
  • Figure 1 is a perspective view of a rotary electrical machine according to the present invention
  • Figure 2 is a longitudinal sectional view of the rotary electrical machine according to the invention
  • Figure 3 is a longitudinal sectional view illustrating the coupling between the shaft of the rotary electrical machine and the shaft of the reducing element by means of a connecting sleeve according to the invention
  • Figure 4 is a cross-sectional view of the connecting sleeve according to the present invention.
  • an orientation from front to rear is considered, an orientation going from left to right in FIGS. 1 and 2.
  • an element “before” is meant an element located on the side of the front bearing 19 and by “rear” element an element situated on the opposite side, that is to say on the side of the electronic control module 34.
  • Figures 1 and 2 show a rotary electric machine 10 comprising a polyphase stator 1 1 surrounding a rotor 12 mounted on a shaft 13 of axis X corresponding to the axis of the electric machine 10.
  • the stator 1 1 surrounds the rotor 12 with presence of an air gap between the internal periphery of the stator 11 and the external periphery of the rotor 12.
  • the stator 1 1 is mounted in a casing 14 comprising a front bearing 15 and a rear bearing 16.
  • the front bearing 15 and the rear bearing 16 each comprise a receiving housing 17, 18 of a corresponding bearing 19, 20 which provides for rotational guidance of the shaft 13.
  • This electric machine 10 is intended to be coupled to a speed reducing element 22 via a connecting sleeve 48, as shown in FIG. 3.
  • the reducing element 22 may take the form of a motor vehicle gearbox or a reduction gear mounted on a vehicle train and coupled to the rotating electric machine 10.
  • the electric machine 10 is able to operate in an alternator mode to supply in particular energy to the battery and to the on-board network of the vehicle, and in an engine mode, to ensure the starting of the heat engine of the vehicle, and if necessary to participate in the traction of the vehicle alone or in combination with the engine.
  • the power of the machine could for example be between 15kW and 50kW.
  • the rotor 12 comprises a body 24 in the form of a pack of sheets.
  • Permanent magnets 25 are implanted in cavities 26 of the body 24.
  • the magnets 25 may be made of rare earth or ferrite depending on the applications and the desired power of the machine.
  • the rotor 12 has two flanges 28, 29 each pressed against an axial end face of the rotor 12. These flanges 28, 29 provide an axial retention of the magnets and also serve to balance the rotor 12.
  • the stator 1 1 comprises a body 31 consisting of a pack of sheets and a coil 32.
  • the body 31 is formed by a stack of sheets of sheets held in the form of a pack by means of a suitable fixing system, such as rivets .
  • the stator body 1 1 is provided with teeth defining notches for mounting the winding 32.
  • the winding 32 comprises a set of phase windings passing through the notches and forming buns extending projecting on either side of the stator body 1 1.
  • the winding 32 is obtained here from conductive elements in the form of pins connected together for example by welding.
  • the winding 32 comprises phase windings, for example of the double three-phase type connected in star and / or in triangle. Phase outputs are intended to be connected to an electronic control module 34.
  • the electronic control module 34 comprises a heat sink 35 on which are fixed in particular power modules 36, for example by screwing. These power modules 36 incorporate switches in known manner, for example taking the form of MOS type transistors, making it possible to control the phases of the rotary electric machine 10 in motor mode or in alternator mode. The switching of these transistors is controlled by a control unit.
  • the electronic control module 34 is mounted flat, via the heat sink 35, against the rear face of a transverse wall of the rear bearing 16.
  • the electric machine 10 comprises a cooling circuit 38 having an inlet 39 and an outlet 40 for coolant, such as a water or oil-based liquid.
  • the cooling circuit 38 has a cooling chamber 41 formed in the mass of the heat sink 35 and a cooling chamber 42 surrounding the stator 11.
  • the cooling chamber 42 is delimited by the external periphery of an annular wall of the front bearing 15 and the internal periphery of an annular wall of the rear bearing 16. This cooling chamber 42 is closed at its axial ends by two seals 46 of toric type.
  • the stator 11 is mounted hooped inside the front bearing 15 so as to establish an intimate contact between the outer periphery of the stator body 11 and the inner periphery of the side wall of the front bearing 15.
  • the shaft 13 of the electric machine 10 and a shaft 47 of the reduction element 22 are coupled by means of a connecting sleeve 48 of axis X1.
  • the connecting sleeve 48 is coaxial with the shaft 13 of the electric machine 10 and the shaft 47 of the reducing element 22.
  • the connecting sleeve 48 of generally tubular shape comprises a first grooved part 48.1 intended to cooperate with the grooved end 49 of the shaft 13 of the electric machine 10 protruding axially relative to the bearing 19.
  • the connecting sleeve 48 also comprises a second grooved part 48.2 intended to cooperate with the grooved end of the shaft 47 of the reducing element 22.
  • the connecting sleeve 48 may also include two end portions 55.1, 55.2 non-grooved with a larger diameter relative to the grooved parts 48.1, 48.2.
  • the difference in diameter between an end portion 55.1, 55.2 and a corresponding fluted portion 48.1, 48.2 defines a shoulder (cf. FIG. 4).
  • a shoulder of a shaft 13, 47 may come to bear against a corresponding shoulder of the sleeve 48.
  • the splines formed in the end of the shaft 13 of the electric machine 10 and in the end of the shaft 13 of l reducing element 22, as well that the corresponding grooves of the connecting sleeve 48 have an axial orientation relative to the axis X.
  • the two fluted parts 48.1, 48.2 have an annular shape.
  • the grooves of the parts 48.1, 48.2 are formed in an internal periphery of each annular part 48.1, 48.2.
  • the two annular parts 48.1, 48.2 are coaxial with each other.
  • a damper 51 is disposed axially between the first part 48.1 and the second part 48.2 of the connecting sleeve 48, ie between the shafts 13 and 47.
  • the damper 51 is interposed, in particular with clearance, axially between the grooved end of the shaft 13 of the rotary electric machine 10 and the grooved end of the shaft 47 of the reducing element 22. It can oppose thus to direct contact between the two trees.
  • the damper is disposed outside the grooves of the grooved end of the shaft 13 of the rotary electric machine 10 and / or outside the grooves of the grooved end of the shaft 47 of the reducing element 22
  • the shock absorber does not transmit the torque from the shafts to the sleeve.
  • the damper 51 is disposed in an internal groove 53 of the connecting sleeve 48 provided for this purpose.
  • the damper 51 has two annular flanges inserted in corresponding grooves so as to have a U-shaped cross section.
  • the damper 51 is made of an elastic material, such as for example rubber or a deformable plastic material.
  • the material chosen preferably has good resistance to hydrocarbons and impact.
  • the axial clearance between the shafts 13, 47 and the damper 51 is less than the axial clearance between a shoulder of a shaft 13, 47 and the connecting sleeve 48.
  • the connecting sleeve 48 thus comes into contact with the damper 51 before coming into contact with a shaft 13, 47 which limits the compression of the damper 51. This makes it possible to reduce noise and vibrations during operation.
  • the damper 51 has a lubricant passage, so that the lubricant can move from the first part 48.1 to the second part 48.2 of the sleeve 48 and vice versa. This makes it possible to obtain an optimal distribution of the lubricant inside the sleeve 48.
  • the damper 51 may have an annular shape, so that the internal periphery of the damper 51 defines the passage of lubricant.
  • the lubricant consists for example of grease.
  • a seal 54 is disposed at one end of the connecting sleeve 48.
  • the seal 54 may for example be arranged in a groove in the shaft 47 of the reducing element 22. Sealing can also be ensured on the side of the shaft of the electric machine.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The invention mainly relates to an assembly for a motor vehicle, comprising: - a rotating electrical machine (10) comprising: - a shaft (13); - a front bearing (15) comprising a housing for receiving a roller bearing (19) providing rotational guidance of the shaft (13); - the shaft (13) comprising an end axially extending beyond the roller bearing (19), the end of the shaft (13) comprising flutes; - a reduction element (22) equipped with a shaft (47) having flutes; and - a connection sleeve (48) comprising: - a first fluted part (48.1) intended to engage with the fluted end of the shaft (13) of the rotating electrical machine (10); - a second fluted part (48.2) intended to engage with the fluted end of the shaft (47) of the reduction element (22); and - a damper (51) axially disposed between the first fluted part (48.1) and the second fluted part (48.2) of the connection sleeve (48).

Description

MACHINE ÉLECTRIQUE TOURNANTE MUNIE D'UN MANCHON DE LIAISON INTÉGRANT UN AMORTISSEUR  ROTATING ELECTRIC MACHINE HAVING A CONNECTION SLEEVE INCORPORATING A SHOCK ABSORBER
La présente invention porte sur une machine électrique tournante munie d'un manchon de liaison intégrant un amortisseur. L'invention trouve une application particulièrement avantageuse, mais non exclusive, avec les machines électriques réversibles de forte puissance pouvant fonctionner en mode alternateur et en mode moteur accouplées avec un élément réducteur. The present invention relates to a rotary electrical machine provided with a connecting sleeve incorporating a shock absorber. The invention finds a particularly advantageous, but not exclusive, application with reversible high power electric machines which can operate in alternator mode and in motor mode coupled with a reducing element.
De façon connue en soi, les machines électriques tournantes comportent un stator et un rotor solidaire d'un arbre. Le stator est monté dans un carter configuré pour porter à rotation l'arbre sur des paliers par l'intermédiaire de roulements. In a manner known per se, rotary electrical machines comprise a stator and a rotor secured to a shaft. The stator is mounted in a casing configured to rotate the shaft on bearings by means of bearings.
Le rotor comporte un corps formé par un empilage de feuilles de tôles maintenues sous forme de paquet au moyen d'un système de fixation adapté. Le rotor comporte des pôles formés par exemple par des aimants permanents logés dans des cavités ménagées dans la masse magnétique du rotor. Alternativement, dans une architecture dite à pôles "saillants", les pôles sont formés par des bobines enroulées autour de bras du rotor. The rotor comprises a body formed by a stack of sheets of metal sheets held in the form of a package by means of a suitable fixing system. The rotor has poles formed for example by permanent magnets housed in cavities formed in the magnetic mass of the rotor. Alternatively, in an architecture known as "salient" poles, the poles are formed by coils wound around the rotor arms.
Par ailleurs, le stator comporte un corps constitué par un empilage de tôles minces formant une couronne, dont la face intérieure est pourvue d'encoches ouvertes vers l'intérieur pour recevoir un bobinage. Le bobinage est obtenu par exemple à partir d'un fil continu recouvert d'émail ou à partir d'éléments conducteurs en forme d'épingles reliées entre elles par soudage. Le bobinage comporte des enroulements de phase connectés en étoile ou en triangle dont les sorties sont reliées à un module électronique de commande. Dans certains types de chaînes de traction de véhicule automobile assurant la transmission de la puissance mécanique du moteur thermique vers les roues du véhicule, une machine électrique tournante réversible de forte puissance peut être accouplée, via une pièce de liaison, à un élément réducteur. L'élément réducteur peut prendre la forme d'une boîte de vitesses du véhicule ou d'un réducteur monté sur un train du véhicule et accouplé à la machine électrique tournante. La machine électrique tournante est apte à fonctionner dans un mode alternateur pour fournir notamment de l’énergie à la batterie et au réseau de bord du véhicule, et dans un mode moteur, pour assurer le démarrage du moteur thermique, et/ou pour participer à la traction du véhicule seule ou en combinaison avec le moteur thermique. Furthermore, the stator comprises a body constituted by a stack of thin sheets forming a crown, the inner face of which is provided with notches open towards the inside to receive a winding. The winding is obtained for example from a continuous wire covered with enamel or from conductive elements in the form of pins linked together by welding. The winding comprises phase windings connected in a star or a triangle, the outputs of which are connected to an electronic control module. In certain types of motor vehicle traction chains ensuring the transmission of mechanical power from the heat engine to the wheels of the vehicle, a high power reversible rotating electrical machine can be coupled, via a connecting piece, to a reducing element. The reducing element may take the form of a vehicle gearbox or a reduction gear mounted on a vehicle train and coupled to the rotary electric machine. The rotary electrical machine is capable of operating in an alternator mode in particular to supply energy to the battery and to the on-board network of the vehicle, and in an engine mode, to ensure the starting of the heat engine, and / or to participate in vehicle traction alone or in combination with the engine.
Afin d'assurer une liaison mécanique entre l'arbre de la machine électrique et l'arbre de l'élément réducteur, on peut utiliser un manchon de liaison de forme globalement tubulaire comportant une première partie cannelée destinée à coopérer avec une extrémité cannelée de l'arbre de la machine électrique tournante, et une deuxième partie cannelée destinée à coopérer avec une extrémité cannelée d'un arbre de l'élément réducteur. In order to ensure a mechanical connection between the shaft of the electric machine and the shaft of the reducing element, it is possible to use a connecting sleeve of generally tubular shape comprising a first grooved part intended to cooperate with a grooved end of the 'shaft of the rotary electrical machine, and a second grooved part intended to cooperate with a grooved end of a shaft of the reducing element.
En fonctionnement, le manchon de liaison est libre d’effectuer des translations suivant son axe. L’arrêt en translation du manchon s'effectue lors du contact de celui-ci avec un épaulement de l’arbre. Le jeu axial entre ces deux pièces mécaniques est faible et vaut notamment moins de 2 mm. Le contact entre le manchon de liaison et l'arbre, qui sont réalisés en acier, va donc générer des bruits et des claquements. Dans un cas extrême, le manchon peut même entrer en résonnance et détériorer le système. In operation, the connecting sleeve is free to perform translations along its axis. The sleeve stops in translation when it comes into contact with a shoulder on the shaft. The axial play between these two mechanical parts is low and is notably less than 2 mm. The contact between the connecting sleeve and the shaft, which are made of steel, will therefore generate noises and clicks. In an extreme case, the sleeve can even resonate and damage the system.
La présente invention vise à remédier efficacement à ces inconvénients en proposant un ensemble pour véhicule automobile comportant: The present invention aims to effectively remedy these drawbacks by proposing an assembly for a motor vehicle comprising:
- une machine électrique tournante comprenant:  - a rotating electric machine comprising:
- un arbre,  - a tree,
- un rotor monté sur l'arbre,  - a rotor mounted on the shaft,
- un stator, notamment entourant le rotor,  - a stator, in particular surrounding the rotor,
- un palier avant comportant un logement de réception d'un roulement assurant un guidage en rotation de l'arbre,  - a front bearing comprising a housing for receiving a bearing ensuring rotational guidance of the shaft,
- l'arbre comportant une extrémité dépassant axialement par rapport au roulement, l'extrémité de l'arbre comportant des cannelures, the shaft comprising one end projecting axially with respect to the bearing, the end of the shaft comprising splines,
- un élément réducteur muni d'un arbre ayant des cannelures, et - a reducing element provided with a shaft having grooves, and
- un manchon de liaison comportant:  - a connecting sleeve comprising:
- une première partie cannelée destinée à coopérer avec l'extrémité cannelée de l'arbre de la machine électrique tournante, - une deuxième partie cannelée destinée à coopérer avec l'extrémité cannelée de l'arbre de l'élément réducteur, et a first grooved part intended to cooperate with the grooved end of the shaft of the rotary electric machine, a second grooved part intended to cooperate with the grooved end of the shaft of the reducing element, and
- un amortisseur disposé axialement entre la première partie cannelée et la deuxième partie cannelée du manchon de liaison. L'invention permet, grâce à la présence de l'amortisseur, d'éviter les chocs entre un arbre et le manchon de liaison. On diminue ainsi le bruit et les claquements lors du fonctionnement du véhicule automobile.  - A damper arranged axially between the first grooved part and the second grooved part of the connecting sleeve. The invention makes it possible, thanks to the presence of the shock absorber, to avoid impacts between a shaft and the connecting sleeve. This reduces noise and clicks during the operation of the motor vehicle.
Selon une réalisation, l'amortisseur est disposé axialement entre l'extrémité cannelée de l'arbre de la machine électrique tournante et l'extrémité cannelée de l'arbre de l'élément réducteur de manière à empêcher un contact axial direct entre l'extrémité cannelée de l'arbre de la machine électrique tournante et l'extrémité cannelée de l'arbre de l'élément réducteur. According to one embodiment, the damper is disposed axially between the grooved end of the shaft of the rotary electrical machine and the grooved end of the shaft of the reducing element so as to prevent direct axial contact between the end splined on the shaft of the rotating electrical machine and the splined end of the shaft on the reducing element.
Selon une réalisation, l’amortisseur est intercalé axialement entre l'extrémité cannelée de l'arbre de la machine électrique tournante et l'extrémité cannelée de l'arbre de l'élément réducteur. According to one embodiment, the damper is interposed axially between the grooved end of the shaft of the rotary electrical machine and the grooved end of the shaft of the reducing element.
Selon une réalisation, l’amortisseur est disposé en dehors des cannelures de l'extrémité cannelée de l'arbre de la machine électrique tournante et/ou en dehors des cannelures de l'extrémité cannelée de l'arbre de l'élément réducteur. Autrement dit, l’amortisseur ne transmet pas le couple des arbres au manchon. According to one embodiment, the damper is disposed outside the grooves of the grooved end of the shaft of the rotary electric machine and / or outside the grooves of the grooved end of the shaft of the reducing element. In other words, the damper does not transmit the torque from the shafts to the sleeve.
Selon une réalisation, l'amortisseur est réalisé dans un matériau élastique. According to one embodiment, the damper is made of an elastic material.
Selon une réalisation, un jeu axial entre les arbres et l'amortisseur est inférieur à un jeu axial entre un épaulement de l'arbre et le manchon de liaison. Selon une réalisation, l'amortisseur comporte un passage de lubrifiant, de sorte que le lubrifiant peut se déplacer de la première partie cannelée vers la deuxième partie cannelée du manchon de liaison, et inversement. According to one embodiment, an axial clearance between the shafts and the shock absorber is less than an axial clearance between a shoulder of the shaft and the connecting sleeve. According to one embodiment, the damper has a lubricant passage, so that the lubricant can move from the first grooved part to the second grooved part of the connecting sleeve, and vice versa.
Selon une réalisation, l'amortisseur présente une forme annulaire. Selon une réalisation, l'amortisseur est disposé dans une gorge interne du manchon de liaison. According to one embodiment, the damper has an annular shape. According to one embodiment, the damper is arranged in an internal groove of the connecting sleeve.
Selon une réalisation, la gorge interne du manchon de liaison sépare axialement la première partie cannelée et la deuxième partie cannelée du manchon de liaison. According to one embodiment, the internal groove of the connecting sleeve axially separates the first grooved part and the second grooved part of the connecting sleeve.
Selon une réalisation, la gorge interne du manchon de liaison est agencée axialement entre la première partie cannelée et la deuxième partie cannelée du manchon de liaison. According to one embodiment, the internal groove of the connecting sleeve is arranged axially between the first grooved part and the second grooved part of the connecting sleeve.
Selon une réalisation, le manchon de liaison comprend deux gorges internes axialement distantes l’une de l’autre et l’amortisseur présente une section en forme de U dont les deux branches sont insérées respectivement dans les deux gorges annulaires. According to one embodiment, the connecting sleeve comprises two internal grooves axially spaced from one another and the damper has a U-shaped section whose two branches are inserted respectively in the two annular grooves.
Selon une réalisation, ledit ensemble comporte au moins un joint disposé à une extrémité du manchon de liaison. Selon une réalisation, l'élément réducteur est une boîte de vitesses de véhicule automobile. According to one embodiment, said assembly comprises at least one seal disposed at one end of the connecting sleeve. According to one embodiment, the reducing element is a motor vehicle gearbox.
Selon une réalisation, l'élément réducteur est un réducteur monté sur un train du véhicule et accouplé à la machine électrique tournante. According to one embodiment, the reducing element is a reduction gear mounted on a train of the vehicle and coupled to the rotary electric machine.
L'invention a également pour objet un véhicule automobile caractérisé en ce qu'il comporte un ensemble tel que précédemment défini. The invention also relates to a motor vehicle characterized in that it comprises an assembly as previously defined.
L’invention sera mieux comprise à la lecture de la description qui suit et à l’examen des figures qui l’accompagnent. Ces figures ne sont données qu’à titre illustratif mais nullement limitatif de l’invention. The invention will be better understood on reading the description which follows and on examining the figures which accompany it. These figures are given only by way of illustration but in no way limit the invention.
La figure 1 est une vue en perspective d'une machine électrique tournante selon la présente invention; Figure 1 is a perspective view of a rotary electrical machine according to the present invention;
La figure 2 est une vue en coupe longitudinale de la machine électrique tournante selon l'invention; La figure 3 est une vue en coupe longitudinale illustrant l'accouplement entre l'arbre de la machine électrique tournante et l'arbre de l'élément réducteur au moyen d'un manchon de liaison selon l'invention; Figure 2 is a longitudinal sectional view of the rotary electrical machine according to the invention; Figure 3 is a longitudinal sectional view illustrating the coupling between the shaft of the rotary electrical machine and the shaft of the reducing element by means of a connecting sleeve according to the invention;
La figure 4 est une vue en coupe transversale du manchon de liaison selon la présente invention. Figure 4 is a cross-sectional view of the connecting sleeve according to the present invention.
Les éléments identiques, similaires, ou analogues, conservent la même référence d’une figure à l’autre. Identical, similar, or analogous elements retain the same reference from one figure to another.
Dans la suite de la description, on considère une orientation d'avant vers l'arrière, une orientation allant de gauche à droite sur les figures 1 et 2. Ainsi, on entend par un élément "avant", un élément situé du côté du roulement avant 19 et par élément "arrière" un élément situé du côté opposé, c’est-à- dire du côté du module électronique de commande 34. In the following description, an orientation from front to rear is considered, an orientation going from left to right in FIGS. 1 and 2. Thus, by an element "before" is meant an element located on the side of the front bearing 19 and by "rear" element an element situated on the opposite side, that is to say on the side of the electronic control module 34.
Les figures 1 et 2 montrent une machine électrique tournante 10 comportant un stator 1 1 polyphasé entourant un rotor 12 monté sur un arbre 13 d'axe X correspondant à l'axe de la machine électrique 10. Le stator 1 1 entoure le rotor 12 avec présence d’un entrefer entre la périphérie interne du stator 11 et la périphérie externe du rotor 12. Le stator 1 1 est monté dans un carter 14 comportant un palier avant 15 et un palier arrière 16. Le palier avant 15 et le palier arrière 16 comportent chacun un logement de réception 17, 18 d'un roulement 19, 20 correspondant qui assure un guidage en rotation de l'arbre 13. Figures 1 and 2 show a rotary electric machine 10 comprising a polyphase stator 1 1 surrounding a rotor 12 mounted on a shaft 13 of axis X corresponding to the axis of the electric machine 10. The stator 1 1 surrounds the rotor 12 with presence of an air gap between the internal periphery of the stator 11 and the external periphery of the rotor 12. The stator 1 1 is mounted in a casing 14 comprising a front bearing 15 and a rear bearing 16. The front bearing 15 and the rear bearing 16 each comprise a receiving housing 17, 18 of a corresponding bearing 19, 20 which provides for rotational guidance of the shaft 13.
Cette machine électrique 10 est destinée à être accouplée à un élément réducteur de vitesse 22 via un manchon de liaison 48, tel que montré sur la figure 3. L'élément réducteur 22 pourra prendre la forme d'une boîte de vitesses de véhicule automobile ou d'un réducteur monté sur un train du véhicule et accouplé à la machine électrique tournante 10. This electric machine 10 is intended to be coupled to a speed reducing element 22 via a connecting sleeve 48, as shown in FIG. 3. The reducing element 22 may take the form of a motor vehicle gearbox or a reduction gear mounted on a vehicle train and coupled to the rotating electric machine 10.
La machine électrique 10 est apte à fonctionner dans un mode alternateur pour fournir notamment de l’énergie à la batterie et au réseau de bord du véhicule, et dans un mode moteur, pour assurer le démarrage du moteur thermique du véhicule, et le cas échéant pour participer à la traction du véhicule seule ou en combinaison avec le moteur thermique. La puissance de la machine pourra par exemple être comprise entre 15kW et 50kW. The electric machine 10 is able to operate in an alternator mode to supply in particular energy to the battery and to the on-board network of the vehicle, and in an engine mode, to ensure the starting of the heat engine of the vehicle, and if necessary to participate in the traction of the vehicle alone or in combination with the engine. The power of the machine could for example be between 15kW and 50kW.
Plus précisément, le rotor 12 comporte un corps 24 sous la forme d’un paquet de tôles. Des aimants permanents 25 sont implantés dans des cavités 26 du corps 24. Les aimants 25 pourront être en terre rare ou en ferrite selon les applications et la puissance recherchée de la machine. More specifically, the rotor 12 comprises a body 24 in the form of a pack of sheets. Permanent magnets 25 are implanted in cavities 26 of the body 24. The magnets 25 may be made of rare earth or ferrite depending on the applications and the desired power of the machine.
En outre, le rotor 12 comporte deux flasques 28, 29 plaqués chacun contre une face d'extrémité axiale du rotor 12. Ces flasques 28, 29 assurent une retenue axiale des aimants et servent également à équilibrer le rotor 12. Par ailleurs, le stator 1 1 comporte un corps 31 constitué par un paquet de tôles ainsi qu’un bobinage 32. Le corps 31 est formé par un empilement de feuilles de tôles maintenues sous forme de paquet au moyen d'un système de fixation adapté, tel que des rivets. In addition, the rotor 12 has two flanges 28, 29 each pressed against an axial end face of the rotor 12. These flanges 28, 29 provide an axial retention of the magnets and also serve to balance the rotor 12. Furthermore, the stator 1 1 comprises a body 31 consisting of a pack of sheets and a coil 32. The body 31 is formed by a stack of sheets of sheets held in the form of a pack by means of a suitable fixing system, such as rivets .
Le corps de stator 1 1 est muni de dents délimitant des encoches pour le montage du bobinage 32. Le bobinage 32 comporte un ensemble d'enroulements de phase traversant les encoches et formant des chignons s'étendant en saillie de part et d'autre du corps de stator 1 1. Le bobinage 32 est obtenu ici à partir d'éléments conducteurs en forme d'épingles reliés entre eux par exemple par soudage. Le bobinage 32 comporte des enroulements de phase par exemple de type double triphasés connectés en étoile et/ou en triangle. Des sorties de phase sont destinées à être reliées à un module électronique de commande 34. The stator body 1 1 is provided with teeth defining notches for mounting the winding 32. The winding 32 comprises a set of phase windings passing through the notches and forming buns extending projecting on either side of the stator body 1 1. The winding 32 is obtained here from conductive elements in the form of pins connected together for example by welding. The winding 32 comprises phase windings, for example of the double three-phase type connected in star and / or in triangle. Phase outputs are intended to be connected to an electronic control module 34.
Le module électronique de commande 34 comporte un dissipateur thermique 35 sur lequel sont fixés notamment des modules de puissance 36, par exemple par vissage. Ces modules de puissance 36 intègrent de façon connue en soi des interrupteurs, prenant par exemple la forme de transistors de type MOS, permettant d'assurer une commande des phases de la machine électrique tournante 10 en mode moteur ou en mode alternateur. La commutation de ces transistors est pilotée par une unité de contrôle. Le module électronique de commande 34 est monté plaqué, via le dissipateur thermique 35, contre la face arrière d'une paroi transversale du palier arrière 16. Avantageusement, la machine électrique 10 comporte un circuit de refroidissement 38 ayant une entrée 39 et d'une sortie 40 de liquide de refroidissement, tel qu'un liquide à base d'eau ou d'huile. Le circuit de refroidissement 38 présente une chambre de refroidissement 41 ménagée dans la masse du dissipateur thermique 35 et une chambre de refroidissement 42 entourant le stator 1 1. The electronic control module 34 comprises a heat sink 35 on which are fixed in particular power modules 36, for example by screwing. These power modules 36 incorporate switches in known manner, for example taking the form of MOS type transistors, making it possible to control the phases of the rotary electric machine 10 in motor mode or in alternator mode. The switching of these transistors is controlled by a control unit. The electronic control module 34 is mounted flat, via the heat sink 35, against the rear face of a transverse wall of the rear bearing 16. Advantageously, the electric machine 10 comprises a cooling circuit 38 having an inlet 39 and an outlet 40 for coolant, such as a water or oil-based liquid. The cooling circuit 38 has a cooling chamber 41 formed in the mass of the heat sink 35 and a cooling chamber 42 surrounding the stator 11.
La chambre de refroidissement 42 est délimitée par la périphérie externe d'une paroi annulaire du palier avant 15 et la périphérie interne d'une paroi annulaire du palier arrière 16. Cette chambre de refroidissement 42 est fermée à ses extrémités axiales par deux joints 46 de type torique. Le stator 11 est monté fretté à l'intérieur du palier avant 15 de manière à établir un contact intime entre la périphérie externe du corps de stator 1 1 et la périphérie interne de la paroi latérale du palier avant 15. The cooling chamber 42 is delimited by the external periphery of an annular wall of the front bearing 15 and the internal periphery of an annular wall of the rear bearing 16. This cooling chamber 42 is closed at its axial ends by two seals 46 of toric type. The stator 11 is mounted hooped inside the front bearing 15 so as to establish an intimate contact between the outer periphery of the stator body 11 and the inner periphery of the side wall of the front bearing 15.
Comme on peut le voir sur la figure 3, l'arbre 13 de la machine électrique 10 et un arbre 47 de l'élément réducteur 22 sont accouplés au moyen d'un manchon de liaison 48 d'axe X1. Le manchon de liaison 48 est coaxial avec l'arbre 13 de la machine électrique 10 et l'arbre 47 de l'élément réducteur 22. As can be seen in Figure 3, the shaft 13 of the electric machine 10 and a shaft 47 of the reduction element 22 are coupled by means of a connecting sleeve 48 of axis X1. The connecting sleeve 48 is coaxial with the shaft 13 of the electric machine 10 and the shaft 47 of the reducing element 22.
A cet effet, le manchon de liaison 48 de forme globalement tubulaire comporte une première partie cannelée 48.1 destinée à coopérer avec l'extrémité cannelée 49 de l'arbre 13 de la machine électrique 10 dépassant axialement par rapport au roulement 19. Le manchon de liaison 48 comporte également une deuxième partie cannelée 48.2 destinée à coopérer avec l'extrémité cannelée de l'arbre 47 de l'élément réducteur 22. For this purpose, the connecting sleeve 48 of generally tubular shape comprises a first grooved part 48.1 intended to cooperate with the grooved end 49 of the shaft 13 of the electric machine 10 protruding axially relative to the bearing 19. The connecting sleeve 48 also comprises a second grooved part 48.2 intended to cooperate with the grooved end of the shaft 47 of the reducing element 22.
Le manchon de liaison 48 pourra comporter également deux portions d'extrémité 55.1 , 55.2 non cannelées de plus grand diamètre par rapport aux parties cannelées 48.1 , 48.2. La différence de diamètre entre une portion d'extrémité 55.1 , 55.2 et une portion cannelée 48.1 , 48.2 correspondante définit un épaulement (cf. figure 4). Un épaulement d'un arbre 13, 47 pourra venir en appui contre un épaulement correspondant du manchon 48. Les cannelures ménagées dans l'extrémité de l'arbre 13 de la machine électrique 10 et dans l'extrémité de l'arbre 13 de l'élément réducteur 22, ainsi que les cannelures correspondantes du manchon de liaison 48, présentent une orientation axiale par rapport à l'axe X. The connecting sleeve 48 may also include two end portions 55.1, 55.2 non-grooved with a larger diameter relative to the grooved parts 48.1, 48.2. The difference in diameter between an end portion 55.1, 55.2 and a corresponding fluted portion 48.1, 48.2 defines a shoulder (cf. FIG. 4). A shoulder of a shaft 13, 47 may come to bear against a corresponding shoulder of the sleeve 48. The splines formed in the end of the shaft 13 of the electric machine 10 and in the end of the shaft 13 of l reducing element 22, as well that the corresponding grooves of the connecting sleeve 48 have an axial orientation relative to the axis X.
Comme on peut le voir sur la figure 4, les deux parties cannelées 48.1 , 48.2 présentent une forme annulaire. Les cannelures des parties 48.1 , 48.2 sont ménagées dans une périphérie interne de chaque partie annulaire 48.1 , 48.2. Les deux parties annulaires 48.1 , 48.2 sont coaxiales l'une par rapport à l'autre. As can be seen in Figure 4, the two fluted parts 48.1, 48.2 have an annular shape. The grooves of the parts 48.1, 48.2 are formed in an internal periphery of each annular part 48.1, 48.2. The two annular parts 48.1, 48.2 are coaxial with each other.
Avantageusement, un amortisseur 51 est disposé axialement entre la première partie 48.1 et la deuxième partie 48.2 du manchon de liaison 48, soit entre les arbres 13 et 47. Advantageously, a damper 51 is disposed axially between the first part 48.1 and the second part 48.2 of the connecting sleeve 48, ie between the shafts 13 and 47.
L’amortisseur 51 est intercalé, notamment avec jeu, axialement entre l'extrémité cannelée de l'arbre 13 de la machine électrique tournante 10 et l'extrémité cannelée de l'arbre 47 de l'élément réducteur 22. Il peut s’opposer ainsi à un contact direct entre les deux arbres. The damper 51 is interposed, in particular with clearance, axially between the grooved end of the shaft 13 of the rotary electric machine 10 and the grooved end of the shaft 47 of the reducing element 22. It can oppose thus to direct contact between the two trees.
Avantageusement, l’amortisseur est disposé en dehors des cannelures de l'extrémité cannelée de l'arbre 13 de la machine électrique tournante 10 et/ou en dehors des cannelures de l'extrémité cannelée de l'arbre 47 de l'élément réducteur 22. Ainsi, l’amortisseur ne transmet pas le couple des arbres au manchon. Advantageously, the damper is disposed outside the grooves of the grooved end of the shaft 13 of the rotary electric machine 10 and / or outside the grooves of the grooved end of the shaft 47 of the reducing element 22 Thus, the shock absorber does not transmit the torque from the shafts to the sleeve.
L'amortisseur 51 est disposé dans une gorge interne 53 du manchon de liaison 48 prévue à cet effet. Dans le mode de réalisation de la figure 3, l'amortisseur 51 présente deux rebords annulaires insérés dans des gorges correspondantes de façon à présenter une section transversale en forme de U. The damper 51 is disposed in an internal groove 53 of the connecting sleeve 48 provided for this purpose. In the embodiment of Figure 3, the damper 51 has two annular flanges inserted in corresponding grooves so as to have a U-shaped cross section.
L'amortisseur 51 est réalisé dans un matériau élastique, comme par exemple en caoutchouc ou dans un matériau plastique déformable. Le matériau choisi présente de préférence une bonne résistance aux hydrocarbures et aux chocs. The damper 51 is made of an elastic material, such as for example rubber or a deformable plastic material. The material chosen preferably has good resistance to hydrocarbons and impact.
Le jeu axial entre les arbres 13, 47 et l'amortisseur 51 est inférieur au jeu axial entre un épaulement d'un arbre 13, 47 et le manchon de liaison 48. Lors de son déplacement, le manchon de liaison 48 vient ainsi en contact avec l'amortisseur 51 avant de venir en contact avec un arbre 13, 47 qui limite la compression de l'amortisseur 51. Cela permet de diminuer le bruit et les vibrations lors du fonctionnement. The axial clearance between the shafts 13, 47 and the damper 51 is less than the axial clearance between a shoulder of a shaft 13, 47 and the connecting sleeve 48. During its movement, the connecting sleeve 48 thus comes into contact with the damper 51 before coming into contact with a shaft 13, 47 which limits the compression of the damper 51. This makes it possible to reduce noise and vibrations during operation.
L'amortisseur 51 comporte un passage de lubrifiant, de sorte que le lubrifiant peut se déplacer de la première partie 48.1 vers la deuxième partie 48.2 du manchon 48 et inversement. Cela permet d'obtenir une répartition optimale du lubrifiant à l'intérieur du manchon 48. L'amortisseur 51 pourra présenter une forme annulaire, de sorte que la périphérie interne de l'amortisseur 51 définit le passage de lubrifiant. Le lubrifiant est constitué par exemple par de la graisse. The damper 51 has a lubricant passage, so that the lubricant can move from the first part 48.1 to the second part 48.2 of the sleeve 48 and vice versa. This makes it possible to obtain an optimal distribution of the lubricant inside the sleeve 48. The damper 51 may have an annular shape, so that the internal periphery of the damper 51 defines the passage of lubricant. The lubricant consists for example of grease.
Un joint 54 est disposé à une extrémité du manchon de liaison 48. Le joint 54 pourra par exemple être disposé dans une gorge de l'arbre 47 de l'élément réducteur 22. L'étanchéité pourra également être assurée du côté de l'arbre de la machine électrique. Bien entendu, la description qui précède a été donnée à titre d'exemple uniquement et ne limite pas le domaine de l'invention dont on ne sortirait pas en remplaçant les différents éléments par tous autres équivalents. A seal 54 is disposed at one end of the connecting sleeve 48. The seal 54 may for example be arranged in a groove in the shaft 47 of the reducing element 22. Sealing can also be ensured on the side of the shaft of the electric machine. Of course, the foregoing description has been given by way of example only and does not limit the scope of the invention from which one would not depart by replacing the various elements with any other equivalent.
En outre, les différentes caractéristiques, variantes, et/ou formes de réalisation de la présente invention peuvent être associées les unes avec les autres selon diverses combinaisons, dans la mesure où elles ne sont pas incompatibles ou exclusives les unes des autres. Furthermore, the various features, variants, and / or embodiments of the present invention can be combined with one another in various combinations, insofar as they are not incompatible or mutually exclusive of one another.

Claims

REVENDICATIONS
1. Ensemble pour véhicule automobile comportant: 1. Motor vehicle assembly comprising:
- une machine électrique tournante (10) comprenant:  - a rotary electric machine (10) comprising:
- un arbre (13),  - a tree (13),
- un rotor (12) monté sur l'arbre (13),  - a rotor (12) mounted on the shaft (13),
- un stator (1 1 ), notamment entourant le rotor (12),  - a stator (1 1), in particular surrounding the rotor (12),
- un palier avant (15) comportant un logement de réception d'un roulement (19) assurant un guidage en rotation de l'arbre (13),  - a front bearing (15) comprising a housing for receiving a bearing (19) ensuring rotational guidance of the shaft (13),
- l'arbre (13) comportant une extrémité dépassant axialement par rapport au roulement (19), l'extrémité de l'arbre (13) comportant des cannelures,  the shaft (13) comprising one end projecting axially with respect to the bearing (19), the end of the shaft (13) comprising splines,
- un élément réducteur (22) muni d'un arbre (47) ayant des cannelures, et a reducing element (22) provided with a shaft (47) having splines, and
- un manchon de liaison (48) comportant: - a connecting sleeve (48) comprising:
- une première partie cannelée (48.1 ) destinée à coopérer avec l'extrémité cannelée de l'arbre (13) de la machine électrique tournante (10), - a first grooved part (48.1) intended to cooperate with the grooved end of the shaft (13) of the rotary electric machine (10),
- une deuxième partie cannelée (48.2) destinée à coopérer avec l'extrémité cannelée de l'arbre (47) de l'élément réducteur (22), et a second grooved part (48.2) intended to cooperate with the grooved end of the shaft (47) of the reducing element (22), and
- un amortisseur (51 ) disposé axialement entre la première partie cannelée (48.1 ) et la deuxième partie cannelée (48.2) du manchon de liaison (48).  - A damper (51) disposed axially between the first splined part (48.1) and the second splined part (48.2) of the connecting sleeve (48).
2. Ensemble selon la revendication 1 , caractérisé en ce que l'amortisseur (51 ) est disposé axialement entre l'extrémité cannelée de l'arbre (13) de la machine électrique tournante (10) et l'extrémité cannelée de l'arbre (47) de l'élément réducteur (22) de manière à empêcher un contact axial direct entre l'extrémité cannelée de l'arbre (13) de la machine électrique tournante (10) et l'extrémité cannelée de l'arbre (47) de l'élément réducteur (22). 2. Assembly according to claim 1, characterized in that the damper (51) is arranged axially between the grooved end of the shaft (13) of the rotary electric machine (10) and the grooved end of the shaft (47) of the reducing element (22) so as to prevent direct axial contact between the grooved end of the shaft (13) of the rotary electric machine (10) and the grooved end of the shaft (47 ) of the reducing element (22).
3. Ensemble selon la revendication 2, caractérisé en ce que l’amortisseur (51 ) est intercalé axialement entre l'extrémité cannelée de l'arbre (13) de la machine électrique tournante (10) et l'extrémité cannelée de l'arbre (47) de l'élément réducteur (22). 3. Assembly according to claim 2, characterized in that the damper (51) is interposed axially between the grooved end of the shaft (13) of the rotary electric machine (10) and the grooved end of the shaft (47) of the reducing element (22).
4. Ensemble selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l’amortisseur est disposé en dehors des cannelures de l'extrémité cannelée de l'arbre (13) de la machine électrique tournante (10) et/ou en dehors des cannelures de l'extrémité cannelée de l'arbre (47) de l'élément réducteur (22). 4. An assembly according to any one of claims 1 to 3, characterized in that the damper is disposed outside the grooves of the grooved end of the shaft (13) of the rotary electric machine (10) and / or outside the grooves of the grooved end of the shaft (47) of the reducing element (22).
5. Ensemble selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'amortisseur (51 ) est réalisé dans un matériau élastique. 5. An assembly according to any one of claims 1 to 4, characterized in that the damper (51) is made of an elastic material.
6. Ensemble selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'un jeu axial entre les arbres (13, 47) et l'amortisseur (51 ) est inférieur à un jeu axial entre un épaulement d'un arbre (13, 47) et le manchon de liaison (48). 6. An assembly according to any one of claims 1 to 5, characterized in that an axial clearance between the shafts (13, 47) and the damper (51) is less than an axial clearance between a shoulder of a shaft (13, 47) and the connecting sleeve (48).
7. Ensemble selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'amortisseur (51 ) comporte un passage de lubrifiant, de sorte que le lubrifiant peut se déplacer de la première partie cannelée (48.1 ) vers la deuxième partie cannelée (48.2) du manchon de liaison (48) et inversement. 7. An assembly according to any one of claims 1 to 6, characterized in that the damper (51) has a lubricant passage, so that the lubricant can move from the first grooved part (48.1) to the second part grooved (48.2) of the connecting sleeve (48) and vice versa.
8. Ensemble selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'amortisseur (51 ) présente une forme annulaire. 8. An assembly according to any one of claims 1 to 7, characterized in that the damper (51) has an annular shape.
9. Ensemble selon l'une quelconque des revendications 1 à 8, caractérisé en ce que l'amortisseur (51 ) est disposé dans une gorge interne (53) du manchon de liaison (48). 9. An assembly according to any one of claims 1 to 8, characterized in that the damper (51) is arranged in an internal groove (53) of the connecting sleeve (48).
10. Ensemble selon la revendication 9, caractérisé en ce que la gorge interne (53) du manchon de liaison (48) est agencée axialement entre la première partie cannelée (48.1 ) et la deuxième partie cannelée (48.2) du manchon de liaison (48). 10. Assembly according to claim 9, characterized in that the internal groove (53) of the connecting sleeve (48) is arranged axially between the first grooved part (48.1) and the second grooved part (48.2) of the connecting sleeve (48 ).
11 Ensemble selon la revendication 9 ou 10, caractérisé en ce que le manchon de liaison (48) comprend deux gorges internes axialement distantes l’une de l’autre et l’amortisseur présente une section en forme de U dont les deux branches sont insérées respectivement dans les deux gorges annulaires. 11 An assembly according to claim 9 or 10, characterized in that the connecting sleeve (48) comprises two internal grooves axially spaced from one another and the damper has a U-shaped section of which the two branches are inserted respectively in the two annular grooves.
12. Ensemble selon l'une quelconque des revendications 1 à 11 , caractérisé en ce qu'il comporte au moins un joint (54) disposé à une extrémité du manchon de liaison (48). 12. An assembly according to any one of claims 1 to 11, characterized in that it comprises at least one seal (54) disposed at one end of the connecting sleeve (48).
13. Ensemble selon l'une quelconque des revendications 1 à 12, caractérisé en ce que l'élément réducteur (22) est une boîte de vitesses de véhicule automobile. 13. An assembly according to any one of claims 1 to 12, characterized in that the reducing element (22) is a motor vehicle gearbox.
14. Ensemble selon l'une quelconque des revendications 1 à 13, caractérisé en ce que l'élément réducteur (22) est un réducteur monté sur un train du véhicule et accouplé à la machine électrique tournante (10). 14. An assembly according to any one of claims 1 to 13, characterized in that the reducing element (22) is a reduction gear mounted on a train of the vehicle and coupled to the rotary electric machine (10).
15. Véhicule automobile caractérisé en ce qu'il comporte un ensemble tel que défini selon l'une quelconque des revendications précédentes. 15. Motor vehicle characterized in that it comprises an assembly as defined according to any one of the preceding claims.
EP19766035.0A 2018-09-14 2019-09-13 Rotating electrical machine equipped with a connection sleeve incorporating a damper Pending EP3850235A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1858311A FR3086127B1 (en) 2018-09-14 2018-09-14 ROTATING ELECTRIC MACHINE EQUIPPED WITH A CONNECTING SLEEVE INCLUDING A SHOCK ABSORBER
PCT/EP2019/074553 WO2020053420A1 (en) 2018-09-14 2019-09-13 Rotating electrical machine equipped with a connection sleeve incorporating a damper

Publications (1)

Publication Number Publication Date
EP3850235A1 true EP3850235A1 (en) 2021-07-21

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EP19766035.0A Pending EP3850235A1 (en) 2018-09-14 2019-09-13 Rotating electrical machine equipped with a connection sleeve incorporating a damper

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EP (1) EP3850235A1 (en)
JP (1) JP7179162B2 (en)
KR (1) KR20210058890A (en)
CN (1) CN113167331B (en)
FR (1) FR3086127B1 (en)
WO (1) WO2020053420A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116490387A (en) * 2020-11-27 2023-07-25 华为数字能源技术有限公司 Electric drive assembly and electric vehicle

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JP7179162B2 (en) 2022-11-28
KR20210058890A (en) 2021-05-24
CN113167331A (en) 2021-07-23
FR3086127B1 (en) 2021-09-10
CN113167331B (en) 2024-07-05
JP2022500601A (en) 2022-01-04
WO2020053420A1 (en) 2020-03-19
FR3086127A1 (en) 2020-03-20

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