WO2016156738A1 - Rotating electrical machine comprising a clearance in order to facilitate the mounting of the machine in a gearbox - Google Patents

Rotating electrical machine comprising a clearance in order to facilitate the mounting of the machine in a gearbox Download PDF

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Publication number
WO2016156738A1
WO2016156738A1 PCT/FR2016/050714 FR2016050714W WO2016156738A1 WO 2016156738 A1 WO2016156738 A1 WO 2016156738A1 FR 2016050714 W FR2016050714 W FR 2016050714W WO 2016156738 A1 WO2016156738 A1 WO 2016156738A1
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WO
WIPO (PCT)
Prior art keywords
shaft
electrical machine
gearbox
rotating electrical
housing
Prior art date
Application number
PCT/FR2016/050714
Other languages
French (fr)
Inventor
Jean-Claude Matt
Paul Armiroli
Original Assignee
Valeo Equipements Electriques Moteur
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 filed Critical Valeo Equipements Electriques Moteur
Priority to CN201680020719.9A priority Critical patent/CN107438938B/en
Publication of WO2016156738A1 publication Critical patent/WO2016156738A1/en

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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
    • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/16—Centering rotors within the stator; Balancing rotors
    • 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
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/06—Machines characterised by the presence of fail safe, back up, redundant or other similar emergency arrangements
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil

Definitions

  • the present invention relates to a machine rotating electric with a clearance for easy its assembly with an auxiliary device.
  • the invention finds a particularly advantageous application, but not exclusive, with the reversible electric machines of high power, for example of the type operating under voltages ranging from 48 V to 300 V, able to operate in alternator and in engine mode coupled with a gearbox.
  • electrical machines turners comprise a stator and a solid rotor of a tree.
  • the rotor may be integral with a driving shaft and / or led and may belong to an electric machine rotating in the form of an alternator, an engine electric, or reversible machine that can operate in both modes.
  • the stator is mounted in a housing configured for rotate the shaft on bearings intermediate bearings.
  • the rotor has a body formed by a stack of sheets of sheet metal kept under package form by means of a suitable fastening system.
  • the rotor comprises poles formed for example by magnets permanent housed in cavities in the mass magnetic rotor. Alternatively, in an architecture so-called "salient" poles, the poles are formed by coils wrapped around rotor arms.
  • the stator has a body constituted by a stack of thin sheets forming a crown, whose inner face is provided with notches open inwards to receive windings of phase. These windings pass through the notches of the body of the stator and form buns protruding from each other and other of the stator body.
  • the phase windings are obtained for example from a continuous wire covered enamel or from shaped conducting elements pins connected together by welding. These windings are polyphase windings connected in star or in triangle whose outputs are connected to a module electrical control.
  • a reversible rotating electric machine of strong power is coupled to the vehicle gearbox.
  • the electric machine is then able to operate in a alternator mode to provide particular energy to the battery and to the vehicle's on-board network, and in a engine, not only to start the engine thermal, but also to participate in the traction of the vehicle alone or in combination with the engine.
  • the machine is positioned inside the volume defined by the gearbox housing so that a pinion carried by the shaft of the machine cooperates with a corresponding pinion of the gearbox.
  • a step associated with a bearing is provided in the casing of the box gears to carry one end of the shaft of the machine in order to support the efforts suffered by the whole.
  • the invention aims to effectively remedy this disadvantage by proposing a rotating electrical machine, in particular of the alternator-starter type, comprising: - a rotor mounted on a tree, a casing having at least one opening to allow passage of said shaft, characterized in that said rotating electrical machine has a clearance left free between said shaft and an edge defining said opening made in said housing.
  • the invention thus makes it possible, because of the clearance, an assembly of the electric machine to inside a device, such as a gearbox, avoiding any risk of hyperstatism.
  • the invention also to reduce the thickness of a side wall of the casing in which the clearance is provided, to the extent where this wall no longer has a mechanical support function of the shaft, especially via a bearing.
  • given of the configuration of the machine shaft it is possible to easily perform machine tests on a test bench before being assembled with the Gearbox type device.
  • a maximum width of said clearance is less than one gap width between said rotor and a stator of said electric machine rotating. This prevents the magnetic bonding of the rotor with the stator during a transport of the machine before its mounting with the device type gearbox.
  • said release extends axially at least the entire thickness of said housing.
  • said electric machine rotating is devoid of bearing.
  • said electric machine rotation has a single bearing cooperating with a end of said shaft located on a side opposite said clearance.
  • the electric machine can be arranged so the clearance allows a radial displacement of the shaft especially when the machine is in a configuration in which shaft is mechanically linked only to the rotor and rolling.
  • said tree is longer on the side of said clearance that the side of the bearing.
  • said shaft is arranged to carry a pinion.
  • the electric machine is cooled by means of an arranged cooling circuit to allow in particular the flow of a liquid of cooling, especially single.
  • the liquid of Cooling can be an oil or water.
  • said clearance is formed by an annular hollow made in said shaft.
  • said tree comprises a axial bore and ducts from said bore having a radial orientation with respect to the axis of said shaft and opening to an outer periphery of said shaft.
  • said rotor is a rotor with permanent magnets.
  • said rotor comprises a pack of sheets.
  • the electric machine rotating can be of the asynchronous type.
  • the subject of the invention is also a set, in particular for a hybrid vehicle, characterized in that said set comprises said rotating electric machine such than previously defined and a device, such as a box gearbox, for example a clutch, said machine rotating motor having a pinion for cooperating with a corresponding gear of said gearbox.
  • a device such as a box gearbox, for example a clutch, said machine rotating motor having a pinion for cooperating with a corresponding gear of said gearbox.
  • a second bearing intended to cooperate with said shaft of said machine electric is mounted on a bearing of a housing of said gearbox.
  • said pinion carried by said shaft is positioned between said housing and said second roll.
  • the invention further relates to a method of mounting an assembly as defined above, characterized in that said method comprises: a step of inserting said rotating electrical machine inside a volume delimited by a casing of said gearbox, - A step of positioning a shaft of said rotating electrical machine so that a pinion carried by said shaft cooperates with a corresponding pinion of said gearbox, and a free end of said shaft protruding from a housing of said rotating electrical machine cooperates with a bearing mounted in a bearing formed in said housing of said gearbox, and - A closing step of said housing of said gearbox.
  • said method comprises in in addition to a step of testing said electric machine rotating performed prior to the insertion step of said rotating electric machine inside the volume delimited by said housing of said gearbox.
  • Figure 1 is a partial longitudinal sectional view of a rotary electric machine according to the present invention
  • Figure 2 is a schematic representation of an assembly of the rotating electrical machine of Figure 1 with a gearbox
  • Fig. 3 is a perspective view of the shaft of the rotating electrical machine of Fig. 1
  • Figure 4 is a diagram of the steps of the mounting method of the assembly according to the present invention formed by the rotary electric machine of Figure 1 and a gearbox.
  • Figure 1 shows an electric machine rotating member 10 having a polyphase stator 11 surrounding a rotor 12 mounted on a shaft 13 of axis X.
  • the stator 11 is carried by a housing 14.
  • the stator 11 of the machine 10 surrounds the rotor 12 with the presence of an air gap 15 between the inner periphery of the stator 11 and the outer periphery of the rotor 12.
  • This electric machine 10 is intended to be coupled to a gearbox 16 clearly visible in figure 2 belonging to a vehicle traction chain automobile.
  • the machine 10 is able to operate in a alternator mode to provide particular energy to the battery and vehicle network but also to recover mechanical energy, and in a motor mode, not only to ensure the start of the engine of the vehicle, but also to participate to pull the vehicle alone or in combination with the thermal motor.
  • the power of the machine 10 can be between 10kW and 60kW, in particular between 18kW and 50kW.
  • the rotor 12 comprises a body 19 in the form of a pack of sheets. Permanent magnets 20 are implanted in cavities 21 of the body 19.
  • the magnets 20 may be rare earth or ferrite according to the applications and the desired power of the machine 10.
  • the poles of the rotor 12 can be formed by coils or forming a squirrel cage for an electric machine of the synchronous type.
  • the stator 11 comprises a body 23 in a form of sheet metal package with notches, for example type semi-closed, equipped with insulation of notches for the mounting of the coil 24 of the stator 11.
  • the coil 24 comprises a set of phase windings passing through the notches of the body 23 of the stator 11 and forming buns 25 extending projecting from both sides of the body 23 of the stator 11.
  • the phase windings are obtained here at from conductive elements in the form of connected pins between them for example by welding. These windings are for example three-phase or multi-phase windings connected in star or triangle.
  • the outputs of phase windings are connected to an electrical control module.
  • the electric machine 10 is cooled by means of a cooling circuit 28 arranged to allow in particular the flow of a coolant, in particular the occurrence of the oil, between the casing 14 and the body 23 of the stator 11, in the direction of the axis X.
  • the cooling circuit 28 includes a pump 29 to deliver the oil, in a chamber of distribution 30 formed in the housing 14, which allows to circulate the oil inside grooves 31 extending axially along the stator 11 and distributed angularly regularly on the circumference of the stator 11.
  • the oil also circulates in an axial bore 32 made in the shaft 13 and in ducts 33 from said bore 32 having a radial orientation and opening towards an outer periphery of the shaft 13.
  • Such an configuration allows to route the liquid of cooling to both axial end faces 36 of the rotor 12.
  • the cooling circuit 28 operates in closed loop, so that the oil is withdrawn by the pump 29 in a reservoir 39 and is recovered after circulation in the machine 10 in this reservoir 39.
  • the rotor 12 has two flanges 41 each pressed against an axial end face 36 of the 12. These flanges 41 provide axial retention of the magnets 22 inside the cavities 21 and also serve to balance the rotor.
  • Each flange 41 may be provided advantageously of at least one projection member 43, constituted by a blade, arranged to project by centrifugation the coolant arriving on the end face 36 corresponding to the buns 25 of the winding 24.
  • two openings 51, 52 are made in side walls 141, 142 of the casing 14 extending perpendicularly through relative to the X axis to allow the passage of the shaft 13.
  • the shaft 13 On the end 131 side, the shaft 13 is mounted on a bearing 55 through a bearing 56, such as a ball or needle bearing.
  • the bearing 55 forms a annular support surface for the corresponding bearing 56.
  • a clearance 61 left free is provided between the shaft 13 and an edge defining the opening 52.
  • the clearance 61 extends according to a whole circumference of the shaft 13 and axially at least following the entire thickness of the wall 142 of the housing 14.
  • the clearance 61 is such that there is no element between the shaft 13 and the edge of the opening 52 made in the wall 142.
  • a maximum width L2 of the clearance 61 is preferably less than a width L1 of the gap 15. This makes it possible to prevent the magnetic bonding of the rotor 12 with the stator 11 during a transport of the machine 10 before to realize its mounting on the gearbox 16 as this is explained in more detail below.
  • the clearance 61 is preferably formed by a recess ring 62 made in the shaft 13.
  • the recess 62 is positioned on the shaft 13 between a shoulder 65 in which are ducts 33 and a fluted section 66 intended for receive a corresponding fluted inner periphery of a 67.
  • the cooperation of the longitudinal grooves of the section 66 and pinion 67 allows to link in rotation the pinion 67 with the shaft 13.
  • the clearance 61 is obtained by increasing the diameter of the opening 52 by relative to the outer diameter of the shaft 13.
  • the shaft 13 is longer on the clearance side 61 than the side of the bearing 56, that is to say that the portion of the shaft 13 extending axially between the end face axial 46 of the rotor 12 turned towards the clearance 61 and the free end 132 is longer than the portion of the shaft 13 extending axially between the end face axial axis 46 opposite the rotor 12 and the end 131 located side of the bearing 56.
  • the shaft 13 On the side of the opening 52, the shaft 13 has a portion that passes through the wall 142 and protrudes axially of the housing 14 relative to the wall 142.
  • the machine 10 is positioned within a volume delimited by a housing 71 of the gearbox 16 filled in part with a liquid, in this case the oil used for lubrication of the various mechanical components of the gearbox and to achieve the cooling of the electric machine 10, as previously described.
  • a liquid in this case the oil used for lubrication of the various mechanical components of the gearbox and to achieve the cooling of the electric machine 10, as previously described.
  • the electric machine 10 is arranged in this volume, so that the pinion 67 carried by the shaft 13 cooperates with a corresponding gear 73 of the box 16.
  • the free end 132 of the shaft 13 protruding from the casing 14 of the electrical machine 10 is mounted on a bearing 76 of the housing 71 of the gearbox 16 through a second bearing 77.
  • the bearing 76 forms an annular bearing surface for the bearing 77 corresponding.
  • the pinion 67 carried by the shaft 13 is then positioned between the housing 71 of the gearbox 16 and the bearing 77.
  • the configuration of the electric machine 10 authorizes to carry out a test step (see step 100 of the FIG. 4) prior to the positioning step of the machine 10 inside the gearbox. Indeed, it is possible to install the electric machine 10, via the free end 132 of the shaft 13, on a test bench (not shown) to verify the mechanical strength of different components, the short-circuit tests of the machine, as well as the operating parameters of the electrical machine 10 (voltage, current, delivered torque, etc ).
  • the electrical machine 10 is inserted following step 101 inside a volume defined by the casing 71 of the gearbox 16. Then, following a step 102, the shaft 13 is positioned so that the pinion 67 mounted on the shaft 13 cooperates with the pinion 73 of the gearbox 16. In addition, the positioning of the shaft 13 is performed so that the free end 132 of the shaft 13 protruding from the casing 14 of the machine 10 cooperates with the bearing 77 mounted in the bearing 76 of the housing 71 of the gearbox 16. The crankcase 71 of the gearbox 16 is then closed in a step 103.
  • the machine 10 has no bearing 56 and bearing 55 corresponding.
  • the machine 10 has two shaft ends 13 protruding from both sides of the casing 14. These two ends are mounted on two bearings made in the casing 71 of the gearbox 16 via two corresponding bearings.
  • Clearances 61 are then provided in both end walls 141, 142 of the casing 14 to dispose of of a mounting set of shaft 13 with worn bearings by the casing 71.
  • the width L2 maximum of each of the clearances 61 is preferably less than the width L1 of the gap 15 of the machine 10 to avoid magnetic bonding between the mounted rotor 12 on the shaft 13 and the stator 11.

Abstract

The invention relates mainly to a rotating electrical machine (10), in particular for a starter-alternator, comprising: a rotor (12) mounted on a shaft (13); and a case (14) including at least one opening (52) so as to allow the passage of the shaft (13), said rotating electrical machine (10) comprising a clearance (61) between the shaft (13) and an edge defining the opening (52) in the case (14).

Description

MACHINE ELECTRIQUE TOURNANTE MUNIE D’UN DEGAGEMENT POUR FACILITER SON MONTAGE AVEC UN DISPOSITIF ANNEXEROTATING ELECTRIC MACHINE WITH A             CLEARANCE TO FACILITATE MOUNTING WITH AN APPARATUS
La présente invention porte sur une machine électrique tournante munie d'un dégagement pour faciliter son montage avec un dispositif annexe. L'invention trouve une application particulièrement avantageuse, mais non exclusive, avec les machines électriques réversibles de forte puissance, par exemple du type fonctionnant sous des tensions allant de 48 V à 300 V, pouvant fonctionner en mode alternateur et en mode moteur accouplées avec une boîte de vitesses.The present invention relates to a machine             rotating electric with a clearance for easy             its assembly with an auxiliary device. The invention finds             a particularly advantageous application, but not             exclusive, with the reversible electric machines of             high power, for example of the type operating under             voltages ranging from 48 V to 300 V, able to operate in             alternator and in engine mode coupled with a gearbox.
De façon connue en soi, les machines électriques tournantes comportent un stator et un rotor solidaire d'un arbre. Le rotor pourra être solidaire d'un arbre menant et/ou mené et pourra appartenir à une machine électrique tournante sous la forme d'un alternateur, d'un moteur électrique, ou d'une machine réversible pouvant fonctionner dans les deux modes.In a manner known per se, electrical machines             turners comprise a stator and a solid rotor of a             tree. The rotor may be integral with a driving shaft             and / or led and may belong to an electric machine             rotating in the form of an alternator, an engine             electric, or reversible machine that can operate             in both modes.
Le stator est monté dans un carter configuré pour porter à rotation l'arbre sur des paliers par l'intermédiaire de roulements. 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 stator is mounted in a housing configured for             rotate the shaft on bearings             intermediate bearings. The rotor has a body             formed by a stack of sheets of sheet metal kept under             package form by means of a suitable fastening system. The             rotor comprises poles formed for example by magnets             permanent housed in cavities in the mass             magnetic rotor. Alternatively, in an architecture             so-called "salient" poles, the poles are formed by             coils wrapped around 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 des enroulements de phase. Ces enroulements traversent les encoches du corps du stator et forment des chignons faisant saillie de part et d'autre du corps du stator. Les enroulements de phase sont obtenus 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. Ces enroulements sont des enroulements polyphasés connectés en étoile ou en triangle dont les sorties sont reliées à un module électrique de commande.In addition, the stator has a body             constituted by a stack of thin sheets forming a             crown, whose inner face is provided with notches             open inwards to receive windings of             phase. These windings pass through the notches of the body of the             stator and form buns protruding from each other and             other of the stator body. The phase windings are             obtained for example from a continuous wire covered             enamel or from shaped conducting elements             pins connected together by welding. These windings             are polyphase windings connected in star or in             triangle whose outputs are connected to a module             electrical control.
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 est accouplée à la boîte de vitesses du véhicule. La machine électrique est alors 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, non seulement pour assurer le démarrage du moteur thermique, mais également pour participer à la traction du véhicule seule ou en combinaison avec le moteur thermique.In certain types of traction chains             motor vehicle providing transmission of power             mechanical engine to the wheels of the vehicle,             a reversible rotating electric machine of strong             power is coupled to the vehicle gearbox.             The electric machine is then able to operate in a             alternator mode to provide particular energy to the             battery and to the vehicle's on-board network, and in a             engine, not only to start the engine             thermal, but also to participate in the traction of the             vehicle alone or in combination with the engine.
Dans certaines configurations compactes, la machine est positionnée à l'intérieur du volume délimité par le carter de la boîte de vitesses de telle façon qu'un pignon porté par l'arbre de la machine coopère avec un pignon correspondant de la boîte de vitesses. Un palier associé à un roulement est prévu dans le carter de la boîte de vitesses pour porter une extrémité de l'arbre de la machine afin de supporter les efforts subis par l'ensemble.In certain compact configurations, the             machine is positioned inside the volume defined by             the gearbox housing so that a             pinion carried by the shaft of the machine cooperates with a             corresponding pinion of the gearbox. A step             associated with a bearing is provided in the casing of the box             gears to carry one end of the shaft of the             machine in order to support the efforts suffered by the whole.
Compte tenu de la configuration classique de la machine électrique dont l'arbre est monté sur deux paliers du carter par l'intermédiaire de deux roulements correspondants, un tel assemblage présente toutefois des risques d'hyperstatisme.Given the classical configuration of the             electric machine whose shaft is mounted on two bearings             of the housing by means of two bearings             corresponding, such an assembly, however, presents             risks of hyperstatism.
L'invention vise à remédier efficacement à cet inconvénient en proposant une machine électrique tournante, notamment de type alterno-démarreur, comportant :
- un rotor monté sur un arbre,
- un carter comportant au moins une ouverture pour autoriser le passage dudit arbre,
caractérisée en ce que ladite machine électrique tournante comporte un dégagement laissé libre entre ledit arbre et un bord délimitant ladite ouverture réalisée dans ledit carter.The invention aims to effectively remedy this disadvantage by proposing a rotating electrical machine, in particular of the alternator-starter type, comprising:
- a rotor mounted on a tree,
a casing having at least one opening to allow passage of said shaft,
characterized in that said rotating electrical machine has a clearance left free between said shaft and an edge defining said opening made in said housing.
L'invention permet ainsi de réaliser, du fait du dégagement, un montage de la machine électrique à l'intérieur d'un dispositif, tel qu'une boîte de vitesses, en évitant tout risque d'hyperstatisme. L'invention permet également de diminuer l'épaisseur d'une paroi latérale du carter dans laquelle est prévu le dégagement, dans la mesure où cette paroi n'a plus de fonction mécanique de support de l'arbre, notamment via un roulement. En outre, compte tenu de la configuration de l'arbre de la machine, il est possible de réaliser aisément des tests de la machine électrique sur un banc d'essai avant son assemblage avec le dispositif de type boîte de vitesses.The invention thus makes it possible, because of the             clearance, an assembly of the electric machine to             inside a device, such as a gearbox,             avoiding any risk of hyperstatism. The invention             also to reduce the thickness of a side wall of the             casing in which the clearance is provided, to the extent             where this wall no longer has a mechanical support function of             the shaft, especially via a bearing. In addition, given             of the configuration of the machine shaft it is             possible to easily perform machine tests             on a test bench before being assembled with the             Gearbox type device.
Selon une réalisation, une largeur maximale dudit dégagement est inférieure à une largeur d'un entrefer entre ledit rotor et un stator de ladite machine électrique tournante. Cela permet d'empêcher le collage magnétique du rotor avec le stator lors d'un transport de la machine avant son montage avec le dispositif de type boîte de vitesses.According to one embodiment, a maximum width of said             clearance is less than one gap width between             said rotor and a stator of said electric machine             rotating. This prevents the magnetic bonding of the             rotor with the stator during a transport of the machine before             its mounting with the device type gearbox.
Selon une réalisation, ledit dégagement s'étend axialement au moins suivant toute l'épaisseur dudit carter.According to one embodiment, said release extends             axially at least the entire thickness of said housing.
Selon une réalisation, ladite machine électrique tournante est dépourvue de roulement.According to one embodiment, said electric machine             rotating is devoid of bearing.
Selon une réalisation, ladite machine électrique tournante comporte un roulement unique coopérant avec une extrémité dudit arbre située d'un côté opposé audit dégagement.According to one embodiment, said electric machine             rotation has a single bearing cooperating with a             end of said shaft located on a side opposite said clearance.
La machine électrique peut être agencée de sorte que le dégagement permette un déplacement radial de l’arbre notamment lorsque la machine est dans une configuration dans laquelle l’arbre est mécaniquement lié uniquement au rotor et au roulement.The electric machine can be arranged so             the clearance allows a radial displacement of the shaft             especially when the machine is in a configuration in             which shaft is mechanically linked only to the rotor             and rolling.
Selon une réalisation, ledit arbre est plus long du côté dudit dégagement que du côté du roulement.According to one embodiment, said tree is longer             on the side of said clearance that the side of the bearing.
Selon une réalisation, ledit arbre est agencé pour porter un pignon.According to one embodiment, said shaft is arranged to             carry a pinion.
Selon une réalisation, la machine électrique est refroidie au moyen d'un circuit de refroidissement agencé pour permettre notamment l'écoulement d'un liquide de refroidissement, notamment unique. Le liquide de refroidissement peut être une huile ou de l’eau.According to one embodiment, the electric machine is             cooled by means of an arranged cooling circuit             to allow in particular the flow of a liquid of             cooling, especially single. The liquid of             Cooling can be an oil or water.
Selon une réalisation, ledit dégagement est formé par une creusure annulaire réalisée dans ledit arbre.According to one embodiment, said clearance is formed             by an annular hollow made in said shaft.
Ceci permet, lorsque la machine électrique est refroidie au moyen d’un circuit de refroidissement, de permettre un meilleur refroidissement des différentes parties de la machine, l’huile circulant à l’intérieur de l’arbre pour atteindre des parties de la machines situées de chaque côté de l’arbre.This allows, when the electric machine is             cooled by means of a cooling circuit,             allow a better cooling of the different             parts of the machine, the oil circulating inside             the tree to reach parts of the machines located from             each side of the tree.
Selon une réalisation, ledit arbre comporte un alésage axial et des conduits issus dudit alésage ayant une orientation radiale par rapport à l'axe dudit arbre et débouchant vers une périphérie externe dudit arbre.According to one embodiment, said tree comprises a             axial bore and ducts from said bore having a             radial orientation with respect to the axis of said shaft and             opening to an outer periphery of said shaft.
Selon une réalisation, ledit rotor est un rotor à aimants permanents.According to one embodiment, said rotor is a rotor with             permanent magnets.
Selon une réalisation, ledit rotor comporte un paquet de tôles.According to one embodiment, said rotor comprises a             pack of sheets.
Selon une réalisation, la machine électrique tournante peut être du type asynchrone.According to one embodiment, the electric machine             rotating can be of the asynchronous type.
L'invention a également pour objet un ensemble, notamment pour véhicule hybride, caractérisé en ce que ledit ensemble comporte ladite machine électrique tournante telle que précédemment définie et un dispositif, tel qu'une boîte de vitesses, par exemple un embrayage, ladite machine électrique tournante comportant un pignon destiné à coopérer avec un pignon correspondant de ladite boîte de vitesses.The subject of the invention is also a set,             in particular for a hybrid vehicle, characterized in that said             set comprises said rotating electric machine such             than previously defined and a device, such as a box             gearbox, for example a clutch, said machine             rotating motor having a pinion for cooperating             with a corresponding gear of said gearbox.
Selon une réalisation, un deuxième roulement destiné à coopérer avec ledit arbre de ladite machine électrique est monté sur un palier d'un carter de ladite boîte de vitesses.According to one embodiment, a second bearing             intended to cooperate with said shaft of said machine             electric is mounted on a bearing of a housing of said             gearbox.
Selon une réalisation, ledit pignon porté par ledit arbre est positionné entre ledit carter et ledit deuxième roulement.According to one embodiment, said pinion carried by             said shaft is positioned between said housing and said             second roll.
L'invention concerne en outre un procédé de montage d'un ensemble tel que précédemment défini, caractérisé en ce que ledit procédé comporte :
- une étape d'insertion de ladite machine électrique tournante à l'intérieur d'un volume délimité par un carter de ladite boîte de vitesses,
- une étape de positionnement d'un arbre de ladite machine électrique tournante en sorte qu'un pignon porté par ledit arbre coopère avec un pignon correspondant de ladite boîte de vitesses, et qu'une extrémité libre dudit arbre dépassant d'un carter de ladite machine électrique tournante coopère avec un roulement monté dans un palier ménagé dans ledit carter de ladite boîte de vitesses, et
- une étape de fermeture dudit carter de ladite boîte de vitesses.The invention further relates to a method of mounting an assembly as defined above, characterized in that said method comprises:
a step of inserting said rotating electrical machine inside a volume delimited by a casing of said gearbox,
- A step of positioning a shaft of said rotating electrical machine so that a pinion carried by said shaft cooperates with a corresponding pinion of said gearbox, and a free end of said shaft protruding from a housing of said rotating electrical machine cooperates with a bearing mounted in a bearing formed in said housing of said gearbox, and
- A closing step of said housing of said gearbox.
Selon une mise en œuvre, ledit procédé comporte en outre une étape de test de ladite machine électrique tournante réalisée préalablement à l'étape d'insertion de ladite machine électrique tournante à l'intérieur du volume délimité par ledit carter de ladite boîte de vitesses.According to one implementation, said method comprises in             in addition to a step of testing said electric machine             rotating performed prior to the insertion step of             said rotating electric machine inside the volume             delimited by said housing of said gearbox.
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.
La figure 1 est une vue en coupe longitudinale partielle d'une machine électrique tournante selon la présente invention;
La figure 2 est une représentation schématique d'un assemblage de la machine électrique tournante de la figure 1 avec une boîte de vitesses;
La figure 3 est une vue en perspective de l'arbre de la machine électrique tournante de la figure 1;
La figure 4 est un diagramme des étapes du procédé de montage de l'ensemble selon la présente invention formé par la machine électrique tournante de la figure 1 et une boîte de vitesses.The invention will be better understood on reading the description which follows and on examining the figures which accompany it. These figures are given for illustrative but not limiting of the invention.
Figure 1 is a partial longitudinal sectional view of a rotary electric machine according to the present invention;
Figure 2 is a schematic representation of an assembly of the rotating electrical machine of Figure 1 with a gearbox;
Fig. 3 is a perspective view of the shaft of the rotating electrical machine of Fig. 1;
Figure 4 is a diagram of the steps of the mounting method of the assembly according to the present invention formed by the rotary electric machine of Figure 1 and a gearbox.
Les éléments identiques, similaires, ou analogues conservent la même référence d’une figure à l’autre.Identical, similar, or similar elements             keep the same reference from one figure to another.
La figure 1 montre une machine électrique tournante 10 comportant un stator 11 polyphasé entourant un rotor 12 monté sur un arbre 13 d'axe X. Le stator 11 est porté par un carter 14. Le stator 11 de la machine 10 entoure le rotor 12 avec présence d’un entrefer 15 entre la périphérie interne du stator 11 et la périphérie externe du rotor 12.Figure 1 shows an electric machine             rotating member 10 having a polyphase stator 11 surrounding a             rotor 12 mounted on a shaft 13 of axis X. The stator 11 is             carried by a housing 14. The stator 11 of the machine 10             surrounds the rotor 12 with the presence of an air gap 15 between the             inner periphery of the stator 11 and the outer periphery of the             rotor 12.
Cette machine électrique 10 est destinée à être accouplée à une boîte de vitesses 16 bien visible en figure 2 appartenant à une chaîne de traction de véhicule automobile. La machine 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 mais également pour permettre de récupérer de l’énergie mécanique, et dans un mode moteur, non seulement pour assurer le démarrage du moteur thermique du véhicule, mais également pour participer à la traction du véhicule seule ou en combinaison avec le moteur thermique. La puissance de la machine 10 pourra être comprise entre 10kW et 60kW, notamment entre 18kW et 50kW.This electric machine 10 is intended to be             coupled to a gearbox 16 clearly visible in figure             2 belonging to a vehicle traction chain             automobile. The machine 10 is able to operate in a             alternator mode to provide particular energy to the             battery and vehicle network but also             to recover mechanical energy, and in             a motor mode, not only to ensure the start of the             engine of the vehicle, but also to participate             to pull the vehicle alone or in combination with the             thermal motor. The power of the machine 10 can be             between 10kW and 60kW, in particular between 18kW and 50kW.
Plus précisément, le rotor 12 comporte un corps 19 sous la forme d’un paquet de tôles. Des aimants permanents 20 sont implantés dans des cavités 21 du corps 19. Les aimants 20 pourront être en terre rare ou en ferrite selon les applications et la puissance recherchée de la machine 10. Alternativement, les pôles du rotor 12 pourront être formés par des bobines ou former une cage d’écureuil pour une machine électrique du type synchrone.More specifically, the rotor 12 comprises a body 19             in the form of a pack of sheets. Permanent magnets             20 are implanted in cavities 21 of the body 19. The             magnets 20 may be rare earth or ferrite according to             the applications and the desired power of the machine             10. Alternatively, the poles of the rotor 12 can be             formed by coils or forming a squirrel cage for             an electric machine of the synchronous type.
Par ailleurs, le stator 11 comporte un corps 23 en forme de paquet de tôles doté d'encoches, par exemple du type semi-fermées, équipées d'isolant d'encoches pour le montage du bobinage 24 du stator 11. Le bobinage 24 comporte un ensemble d'enroulements de phase traversant les encoches du corps 23 du stator 11 et formant des chignons 25 s'étendant en saillie de part et d'autre du corps 23 du stator 11. Les enroulements de phase sont obtenus ici à partir d'éléments conducteurs en forme d'épingles reliées entre elles par exemple par soudage. Ces enroulements sont par exemple des enroulements triphasés ou multiphasés connectés en étoile ou en triangle. Les sorties des enroulements de phase sont reliées à un module électrique de commande.Moreover, the stator 11 comprises a body 23 in             a form of sheet metal package with notches, for example             type semi-closed, equipped with insulation of notches for the             mounting of the coil 24 of the stator 11. The coil 24 comprises             a set of phase windings passing through the notches             of the body 23 of the stator 11 and forming buns 25             extending projecting from both sides of the body 23 of the             stator 11. The phase windings are obtained here at             from conductive elements in the form of connected pins             between them for example by welding. These windings are             for example three-phase or multi-phase windings             connected in star or triangle. The outputs of             phase windings are connected to an electrical control module.
La machine électrique 10 est refroidie au moyen d'un circuit de refroidissement 28 agencé pour permettre notamment l'écoulement d'un liquide de refroidissement, en l'occurrence de l'huile, entre le carter 14 et le corps 23 du stator 11, dans la direction de l'axe X. A cet effet, le circuit de refroidissement 28 comporte une pompe 29 permettant d'acheminer l'huile, dans une chambre de distribution 30 ménagée dans le carter 14, laquelle permet de faire circuler l'huile à l'intérieur de rainures 31 s'étendant axialement le long du stator 11 et répartis angulairement de manière régulière sur la circonférence du stator 11.The electric machine 10 is cooled by means of             a cooling circuit 28 arranged to allow             in particular the flow of a coolant, in particular             the occurrence of the oil, between the casing 14 and the body 23             of the stator 11, in the direction of the axis X. For this purpose, the             cooling circuit 28 includes a pump 29             to deliver the oil, in a chamber of             distribution 30 formed in the housing 14, which allows             to circulate the oil inside grooves 31             extending axially along the stator 11 and distributed             angularly regularly on the circumference of the             stator 11.
L'huile circule également dans un alésage axial 32 réalisé dans l'arbre 13 et dans des conduits 33 issus dudit alésage 32 ayant une orientation radiale et débouchant vers une périphérie externe de l'arbre 13. Une telle configuration permet ainsi d'acheminer le liquide de refroidissement vers les deux faces d'extrémité axiale 36 du rotor 12. Le circuit de refroidissement 28 fonctionne en boucle fermée, de telle façon que l'huile est prélevée par la pompe 29 dans un réservoir 39 et est récupérée après circulation dans la machine 10 dans ce réservoir 39.The oil also circulates in an axial bore 32             made in the shaft 13 and in ducts 33 from said             bore 32 having a radial orientation and opening towards             an outer periphery of the shaft 13. Such an             configuration allows to route the liquid of             cooling to both axial end faces 36 of the             rotor 12. The cooling circuit 28 operates in             closed loop, so that the oil is withdrawn by             the pump 29 in a reservoir 39 and is recovered after             circulation in the machine 10 in this reservoir 39.
En outre, le rotor 12 comporte deux flasques 41 plaqués chacun contre une face d'extrémité axiale 36 du rotor 12. Ces flasques 41 assurent une retenue axiale des aimants 22 à l'intérieur des cavités 21 et servent également à équilibrer le rotor. Chaque flasque 41 pourra être muni avantageusement d'au moins un organe de projection 43, constitué par une pale, agencé pour projeter par centrifugation le liquide de refroidissement arrivant sur la face d'extrémité 36 correspondante vers les chignons 25 du bobinage 24.In addition, the rotor 12 has two flanges 41             each pressed against an axial end face 36 of the             12. These flanges 41 provide axial retention of the             magnets 22 inside the cavities 21 and also serve             to balance the rotor. Each flange 41 may be provided             advantageously of at least one projection member 43,             constituted by a blade, arranged to project by             centrifugation the coolant arriving on the             end face 36 corresponding to the buns 25 of the             winding 24.
Comme cela est mieux visible sur la figure 2, deux ouvertures 51, 52 sont réalisées dans des parois latérales 141, 142 du carter 14 s'étendant perpendiculairement par rapport à l'axe X pour autoriser le passage de l'arbre 13. Du côté de l'extrémité 131, l'arbre 13 est monté sur un palier 55 par l'intermédiaire d'un roulement 56, tel qu'un roulement à billes ou à aiguilles. Le palier 55 forme une surface d'appui annulaire pour le roulement 56 correspondant.As best seen in Figure 2, two              openings 51, 52 are made in side walls             141, 142 of the casing 14 extending perpendicularly through             relative to the X axis to allow the passage of the shaft 13.             On the end 131 side, the shaft 13 is mounted on a             bearing 55 through a bearing 56, such as a             ball or needle bearing. The bearing 55 forms a             annular support surface for the corresponding bearing 56.
Du côté de l'extrémité opposée 132, un dégagement 61 laissé libre est prévu entre l'arbre 13 et un bord délimitant l'ouverture 52. Le dégagement 61 s'étend suivant toute une circonférence de l'arbre 13 et axialement au moins suivant toute l'épaisseur de la paroi 142 du carter 14. Le dégagement 61 est tel qu'il n'existe aucun élément entre l'arbre 13 et le bord de l'ouverture 52 réalisée dans la paroi 142. Une largeur maximale L2 du dégagement 61 est de préférence inférieure à une largeur L1 de l'entrefer 15. Cela permet d'empêcher le collage magnétique du rotor 12 avec le stator 11 lors d'un transport de la machine 10 avant de réaliser son montage sur la boîte de vitesses 16 comme cela est expliqué plus en détails ci-après.On the opposite end side 132, a clearance             61 left free is provided between the shaft 13 and an edge             defining the opening 52. The clearance 61 extends according to             a whole circumference of the shaft 13 and axially at least             following the entire thickness of the wall 142 of the housing 14. The             clearance 61 is such that there is no element between             the shaft 13 and the edge of the opening 52 made in the             wall 142. A maximum width L2 of the clearance 61 is             preferably less than a width L1 of the gap 15.             This makes it possible to prevent the magnetic bonding of the rotor 12             with the stator 11 during a transport of the machine 10 before             to realize its mounting on the gearbox 16 as             this is explained in more detail below.
Comme cela est visible sur les figures 1 et 3, le dégagement 61 est formé de préférence par une creusure annulaire 62 réalisée dans l'arbre 13. La creusure 62 et située sensiblement dans le plan de la paroi radiale 142 du carter 14. En l'occurrence, la creusure 62 est positionnée sur l'arbre 13 entre un épaulement 65 dans lequel sont réalisés des conduits 33 et un tronçon cannelé 66 destiné à recevoir une périphérie interne cannelée correspondante d'un pignon 67. La coopération des cannelures longitudinales du tronçon 66 et du pignon 67 permet de lier en rotation le pignon 67 avec l'arbre 13. En variante, dans le cas où l'arbre 13 est dépourvu de creusure 62, le dégagement 61 est obtenu en augmentant le diamètre de l'ouverture 52 par rapport au diamètre externe de l'arbre 13.As can be seen in FIGS. 1 and 3, the             clearance 61 is preferably formed by a recess             ring 62 made in the shaft 13. The hollow 62 and             substantially in the plane of the radial wall 142 of the             14. In this case, the recess 62 is positioned             on the shaft 13 between a shoulder 65 in which are             ducts 33 and a fluted section 66 intended for             receive a corresponding fluted inner periphery of a             67. The cooperation of the longitudinal grooves of the             section 66 and pinion 67 allows to link in rotation the             pinion 67 with the shaft 13. Alternatively, in the case where             the shaft 13 is devoid of hollow 62, the clearance 61 is             obtained by increasing the diameter of the opening 52 by             relative to the outer diameter of the shaft 13.
L'arbre 13 est plus long du côté du dégagement 61 que du côté du roulement 56, c’est-à-dire que la portion de l'arbre 13 s'étendant axialement entre la face d'extrémité axiale 46 du rotor 12 tournée vers le dégagement 61 et l'extrémité libre 132 est plus longue que la portion de l'arbre 13 s'étendant axialement entre la face d'extrémité axiale 46 opposée du rotor 12 et l'extrémité 131 située du côté du roulement 56. Du côté de l'ouverture 52, l'arbre 13 présente une partie qui traverse la paroi 142 et dépasse axialement du carter 14 par rapport à la paroi 142.The shaft 13 is longer on the clearance side 61             than the side of the bearing 56, that is to say that the portion of             the shaft 13 extending axially between the end face             axial 46 of the rotor 12 turned towards the clearance 61 and             the free end 132 is longer than the portion of             the shaft 13 extending axially between the end face             axial axis 46 opposite the rotor 12 and the end 131 located             side of the bearing 56. On the side of the opening 52, the shaft 13             has a portion that passes through the wall 142 and protrudes             axially of the housing 14 relative to the wall 142.
Comme on peut le voir sur la figure 2, la machine 10 est positionnée à l'intérieur d'un volume délimité par un carter 71 de la boîte de vitesses 16 rempli en partie d'un liquide, en l'occurrence de l'huile utilisé pour la lubrification des différents composants mécaniques de la boîte de vitesses et pour réaliser le refroidissement de la machine électrique 10, comme cela a été décrit précédemment.As can be seen in Figure 2, the machine             10 is positioned within a volume delimited by a             housing 71 of the gearbox 16 filled in part with a             liquid, in this case the oil used for             lubrication of the various mechanical components of the             gearbox and to achieve the cooling of the             electric machine 10, as previously described.
La machine électrique 10 est disposée dans ce volume, de telle façon que le pignon 67 porté par l'arbre 13 coopère avec un pignon 73 correspondant de la boîte de vitesses 16. En outre, l'extrémité libre 132 de l'arbre 13 dépassant du carter 14 de la machine électrique 10 est montée sur un palier 76 du carter 71 de la boîte de vitesses 16 par l'intermédiaire d'un deuxième roulement 77. Le palier 76 forme une surface d'appui annulaire pour le roulement 77 correspondant. Le pignon 67 porté par l'arbre 13 est alors positionné entre le carter 71 de la boîte de vitesses 16 et le roulement 77.The electric machine 10 is arranged in this             volume, so that the pinion 67 carried by the shaft 13             cooperates with a corresponding gear 73 of the box             16. In addition, the free end 132 of the shaft 13             protruding from the casing 14 of the electrical machine 10 is             mounted on a bearing 76 of the housing 71 of the gearbox             16 through a second bearing 77. The bearing             76 forms an annular bearing surface for the bearing 77             corresponding. The pinion 67 carried by the shaft 13 is then             positioned between the housing 71 of the gearbox 16 and             the bearing 77.
La configuration de la machine électrique 10 autorise à réaliser une étape de test (cf. étape 100 de la figure 4) préalablement à l'étape de positionnement de la machine 10 à l'intérieur de la boîte de vitesses 16. En effet, il est possible d'installer la machine électrique 10, via l'extrémité libre 132 de l'arbre 13, sur un banc d'essai (non représenté) afin de vérifier la tenue mécanique des différents composants, les tests en court-circuit de la machine, ainsi que les paramètres de fonctionnement de la machine électrique 10 (tension, courant, couple délivré, etc...).The configuration of the electric machine 10             authorizes to carry out a test step (see step 100 of the             FIG. 4) prior to the positioning step of the             machine 10 inside the gearbox.             Indeed, it is possible to install the electric machine 10,             via the free end 132 of the shaft 13, on a test bench             (not shown) to verify the mechanical strength of             different components, the short-circuit tests of the             machine, as well as the operating parameters of the             electrical machine 10 (voltage, current, delivered torque, etc ...).
Une fois le test validé, la machine électrique 10 est insérée suivant l'étape 101 à l'intérieur d'un volume délimité par le carter 71 de la boîte de vitesses 16. Puis, suivant une étape 102, l'arbre 13 est positionné en sorte que le pignon 67 monté sur l'arbre 13 coopère avec le pignon 73 correspondant de la boîte de vitesses 16. En outre, le positionnement de l'arbre 13 est effectué de façon que l'extrémité libre 132 de l'arbre 13 dépassant du carter 14 de la machine 10 coopère avec le roulement 77 monté dans le palier 76 du carter 71 de la boîte de vitesses 16. Le carter 71 de la boîte de vitesses 16 est ensuite fermé dans une étape 103.Once the test is validated, the electrical machine 10             is inserted following step 101 inside a volume             defined by the casing 71 of the gearbox 16. Then,             following a step 102, the shaft 13 is positioned so             that the pinion 67 mounted on the shaft 13 cooperates with the pinion             73 of the gearbox 16. In addition, the             positioning of the shaft 13 is performed so that             the free end 132 of the shaft 13 protruding from the casing 14             of the machine 10 cooperates with the bearing 77 mounted in the             bearing 76 of the housing 71 of the gearbox 16. The crankcase             71 of the gearbox 16 is then closed in a             step 103.
Dans une variante de réalisation, la machine 10 est dépourvue de roulement 56 et de palier 55 correspondant. Dans ce cas, la machine 10 présente deux extrémités d'arbre 13 dépassant de part et d'autre du carter 14. Ces deux extrémités sont montées sur deux paliers réalisés dans le carter 71 de la boîte de vitesse 16 par l'intermédiaire de deux roulements correspondants.In an alternative embodiment, the machine 10             has no bearing 56 and bearing 55 corresponding.             In this case, the machine 10 has two shaft ends             13 protruding from both sides of the casing 14. These two             ends are mounted on two bearings made in the             casing 71 of the gearbox 16 via             two corresponding bearings.
Des dégagements 61 sont alors prévus dans les deux parois d'extrémité 141, 142 du carter 14 afin de disposer d'un jeu de montage de l'arbre 13 avec les roulements portés par le carter 71. Comme indiqué précédemment, la largeur L2 maximale de chacun des dégagements 61 est de préférence inférieure à la largeur L1 de l'entrefer 15 de la machine 10 pour éviter un collage magnétique entre le rotor 12 monté sur l'arbre 13 et le stator 11. Clearances 61 are then provided in both             end walls 141, 142 of the casing 14 to dispose of             of a mounting set of shaft 13 with worn bearings             by the casing 71. As indicated previously, the width L2             maximum of each of the clearances 61 is preferably             less than the width L1 of the gap 15 of the machine 10             to avoid magnetic bonding between the mounted rotor 12             on the shaft 13 and the stator 11.
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.Of course, the foregoing description has been             given by way of example only and does not limit the             field of invention that we would not go out in             replacing the different elements by all other equivalents.

Claims (14)

  1. Machine électrique tournante (10), notamment de type alterno-démarreur, comportant :
    - un rotor (12) monté sur un arbre (13),
    - un carter (14) comportant au moins une ouverture (52) pour autoriser le passage dudit arbre (13),
    caractérisée en ce que ladite machine électrique tournante (10) comporte un dégagement (61) laissé libre entre ledit arbre (13) et un bord délimitant ladite ouverture (52) réalisée dans ledit carter (14).    Rotating electrical machine (10), in particular of the alternator-starter type, comprising:
    a rotor (12) mounted on a shaft (13),
    - a casing (14) having at least one opening (52) to allow passage of said shaft (13),
    characterized in that said rotating electrical machine (10) has a clearance (61) left free between said shaft (13) and an edge defining said opening (52) formed in said housing (14).
  2. Machine électrique tournante selon la revendication 1, caractérisée en ce qu'une largeur maximale (L2) dudit dégagement (61) est inférieure à une largeur (L1) d'un entrefer (15) entre ledit rotor (12) et un stator (11) de ladite machine électrique tournante (10).Rotating electric machine according to the                 claim 1, characterized in that a width                 maximum (L2) of said clearance (61) is less than one                 width (L1) of an air gap (15) between said rotor (12)                 and a stator (11) of said rotating electrical machine (10).
  3. Machine électrique tournante selon la revendication 1 ou 2, caractérisée en ce que ledit dégagement (61) s'étend axialement au moins suivant toute l'épaisseur dudit carter (14). Rotating electric machine according to the                 claim 1 or 2, characterized in that said                 clearance (61) extends axially at least                 the entire thickness of said housing (14).
  4. Machine électrique tournante selon l'une quelconque des revendications 1 à 3, caractérisée en ce que ladite machine électrique tournante (10) comporte un roulement unique (56) coopérant avec une extrémité dudit arbre (13) située d'un côté opposé audit dégagement (61).Rotating electrical machine according to one                 any of claims 1 to 3, characterized in that                 said rotary electrical machine (10) has a                 single bearing (56) cooperating with an end of said                 shaft (13) located on a side opposite said clearance (61).
  5. Machine électrique tournante selon la revendication 4, caractérisée en ce que ledit arbre (13) est plus long du côté dudit dégagement (61) que du côté du roulement (56). Rotating electric machine according to the                 claim 4, characterized in that said shaft (13)                 is longer on the side of said clearance (61) than on the side                 of the bearing (56).
  6. Machine électrique tournante selon l'une quelconque des revendications 1 à 5, caractérisée en ce que ledit arbre (13) est agencé pour porter un pignon (67). Rotating electrical machine according to one                 any of claims 1 to 5, characterized in that                 said shaft (13) is arranged to carry a pinion                 (67).
  7. Machine électrique tournante selon l'une quelconque des revendications 1 à 6, caractérisée en ce que ledit dégagement (61) est formé par une creusure annulaire réalisée dans ledit arbre (13). Rotating electrical machine according to one                 any of claims 1 to 6, characterized in that                 said clearance (61) is formed by a recess                 ring formed in said shaft (13).
  8. Machine électrique tournante selon l'une quelconque des revendications 1 à 7, caractérisée en ce que ledit arbre (13) comporte un alésage axial (32) et des conduits (33) issus dudit alésage (32) ayant une orientation radiale par rapport à l'axe dudit arbre (13) et débouchant vers une périphérie externe dudit arbre (13). Rotating electrical machine according to one                 any of claims 1 to 7, characterized in that                 said shaft (13) has an axial bore (32) and                 ducts (33) issuing from said bore (32) having a                 radial orientation with respect to the axis of said shaft (13)                 and opening towards an outer periphery of said tree                 (13).
  9. Machine électrique tournante selon l'une quelconque des revendications 1 à 8, caractérisée en ce que ledit rotor (12) est un rotor à aimants permanents. Rotating electrical machine according to one                 any of claims 1 to 8, characterized in that                 said rotor (12) is a permanent magnet rotor.
  10. Ensemble, notamment pour véhicule hybride, caractérisé en ce que ledit ensemble comporte ladite machine électrique tournante (10) telle que définie selon l'une quelconque des revendications précédentes et une boîte de vitesses (16), ladite machine électrique tournante (10) comportant un pignon (67) destiné à coopérer avec un pignon (73) correspondant de ladite boîte de vitesses (16).Together, especially for a hybrid vehicle,                 characterized in that said set comprises said                 rotary electric machine (10) as defined                 according to any one of the preceding claims and                 a gearbox (16), said electric machine                 turntable (10) having a pinion (67) for                 cooperate with a corresponding pinion (73) of said                 gearbox (16).
  11. Ensemble selon la revendication 10, caractérisé en ce qu'un deuxième roulement (77) destiné à coopérer avec ledit arbre (13) de ladite machine électrique tournante (10) est monté sur un palier (76) d'un carter (71) de ladite boîte de vitesses (16).Assembly according to Claim 10, characterized                 in that a second bearing (77) for cooperating                 with said shaft (13) of said electric machine                 rotating (10) is mounted on a bearing (76) of a housing                 (71) of said gearbox (16).
  12. Ensemble selon la revendication 11, caractérisé en ce que ledit pignon (67) porté par ledit arbre (13) est positionné entre ledit carter (71) et ledit deuxième roulement (77).Assembly according to Claim 11, characterized                 in that said pinion (67) carried by said shaft (13)                 is positioned between said housing (71) and said second                 bearing (77).
  13. Procédé de montage d'un ensemble tel que défini selon l'une quelconque des revendications 10 à 12, caractérisé en ce que ledit procédé comporte :
    - une étape (101) d'insertion de ladite machine électrique tournante (10) à l'intérieur d'un volume délimité par un carter (71) de ladite boîte de vitesses (16),
    - une étape (102) de positionnement d'un arbre (13) de ladite machine électrique tournante en sorte qu'un pignon (67) porté par ledit arbre (13) coopère avec un pignon (73) correspondant de ladite boîte de vitesses (16), et qu'une extrémité libre dudit arbre (13) dépassant d'un carter (14) de ladite machine électrique tournante (10) coopère avec un roulement (77) monté dans un palier (76) ménagé dans le carter (71) de ladite boîte de vitesses, et
    - une étape (103) de fermeture dudit carter (71) de ladite boîte de vitesses (16).    A method of mounting an assembly as defined in any one of claims 10 to 12, characterized in that said method comprises:
    a step (101) of inserting said rotating electrical machine (10) inside a volume delimited by a casing (71) of said gearbox (16),
    - A step (102) for positioning a shaft (13) of said rotating electrical machine so that a pinion (67) carried by said shaft (13) cooperates with a corresponding gear (73) of said gearbox ( 16), and that a free end of said shaft (13) protruding from a housing (14) of said rotary electrical machine (10) cooperates with a bearing (77) mounted in a bearing (76) formed in the housing (71). ) of said gearbox, and
    - A step (103) for closing said housing (71) of said gearbox (16).
  14. Procédé selon la revendication 13, caractérisé en ce que ledit procédé comporte une étape (100) de test de ladite machine électrique tournante (10) réalisée préalablement à l'étape d'insertion de ladite machine électrique tournante (10) à l'intérieur du volume délimité par ledit carter (71) de ladite boîte de vitesses (16).Method according to Claim 13, characterized                 in that said method comprises a test step (100)                 of said rotating electrical machine (10) made                 prior to the insertion step of said machine                 rotating electric (10) inside the volume                 defined by said housing (71) of said box                 speeds (16).
PCT/FR2016/050714 2015-04-02 2016-03-30 Rotating electrical machine comprising a clearance in order to facilitate the mounting of the machine in a gearbox WO2016156738A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680020719.9A CN107438938B (en) 2015-04-02 2016-03-30 Rotary electric machine comprising a gap to assist the mounting of the rotary electric machine in a gearbox

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1552846 2015-04-02
FR1552846A FR3034586B1 (en) 2015-04-02 2015-04-02 ROTATING ELECTRICAL MACHINE WITH CLEARANCE TO FACILITATE MOUNTING WITH AN APPARATUS

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WO2016156738A1 true WO2016156738A1 (en) 2016-10-06

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GB1514961A (en) * 1974-04-30 1978-06-21 Airborne Mfg Co Method of assembly of dynamoelectric machines
DE2811501A1 (en) * 1978-03-16 1979-09-20 Interelectric Ag Motor shaft retaining assembly limiting axial movement - has retaining ring on shaft separated by washer from elastic ring on casing
DE4403820A1 (en) * 1993-10-11 1995-04-13 Licentia Gmbh Electric motor, in particular a commutator motor
DE10136240A1 (en) * 2001-07-25 2003-02-20 Siemens Ag Bearing system for shaft is made up of three sections at different positions along shaft, which is made up of two sections connected by membrane coupling, allowing angular and axial offset of shaft sections
US20140042841A1 (en) * 2012-08-08 2014-02-13 Ac Propulsion, Inc. Liquid Cooled Electric Motor
DE102013204436A1 (en) * 2013-03-14 2014-09-18 Krones Ag Drive for a transport device, set of drives and method for driving a transport device

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Publication number Priority date Publication date Assignee Title
DE9416306U1 (en) * 1994-10-10 1995-01-19 Wittur Aufzugteile Gmbh & Co Drive unit for a hoist

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1514961A (en) * 1974-04-30 1978-06-21 Airborne Mfg Co Method of assembly of dynamoelectric machines
DE2811501A1 (en) * 1978-03-16 1979-09-20 Interelectric Ag Motor shaft retaining assembly limiting axial movement - has retaining ring on shaft separated by washer from elastic ring on casing
DE4403820A1 (en) * 1993-10-11 1995-04-13 Licentia Gmbh Electric motor, in particular a commutator motor
DE10136240A1 (en) * 2001-07-25 2003-02-20 Siemens Ag Bearing system for shaft is made up of three sections at different positions along shaft, which is made up of two sections connected by membrane coupling, allowing angular and axial offset of shaft sections
US20140042841A1 (en) * 2012-08-08 2014-02-13 Ac Propulsion, Inc. Liquid Cooled Electric Motor
DE102013204436A1 (en) * 2013-03-14 2014-09-18 Krones Ag Drive for a transport device, set of drives and method for driving a transport device

Also Published As

Publication number Publication date
CN107438938B (en) 2021-06-22
FR3034586B1 (en) 2017-03-24
CN107438938A (en) 2017-12-05
FR3034586A1 (en) 2016-10-07

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