EP2874841A1 - Motorized hub comprising a change in ratio and coupling and uncoupling means - Google Patents

Motorized hub comprising a change in ratio and coupling and uncoupling means

Info

Publication number
EP2874841A1
EP2874841A1 EP13741709.3A EP13741709A EP2874841A1 EP 2874841 A1 EP2874841 A1 EP 2874841A1 EP 13741709 A EP13741709 A EP 13741709A EP 2874841 A1 EP2874841 A1 EP 2874841A1
Authority
EP
European Patent Office
Prior art keywords
hub
motorized
intermediate shaft
coupling
wheels
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13741709.3A
Other languages
German (de)
French (fr)
Inventor
Gérard BAUMGARTNER
Olivier Joye
Daniel Walser
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.)
Michelin Recherche et Technique SA Switzerland
Compagnie Generale des Etablissements Michelin SCA
Michelin Recherche et Technique SA France
Original Assignee
Michelin Recherche et Technique SA Switzerland
Compagnie Generale des Etablissements Michelin SCA
Michelin Recherche et Technique SA France
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 Michelin Recherche et Technique SA Switzerland, Compagnie Generale des Etablissements Michelin SCA, Michelin Recherche et Technique SA France filed Critical Michelin Recherche et Technique SA Switzerland
Publication of EP2874841A1 publication Critical patent/EP2874841A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • 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
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • 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
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
    • 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
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0061—Disposition of motor in, or adjacent to, traction wheel the motor axle being parallel to the wheel axle

Definitions

  • Motorized hub comprising a gear change and coupling and decoupling means
  • the present invention relates to the ground connection of electric traction motor vehicles, in particular their motorized wheels.
  • a number of proposals are known, such as those of EP 0878332, EP 1382476, EP 1630026, WO 2006/032669, US 2007/0257570, WO 2007/083209, EP 1950072, WO 2009/124892, US 2010/0108417 or WO 201 1/073320.
  • the term "motorized hub” is used to designate the mechanical assembly comprising the hub, the hub carrier, the guide of the hub relative to the hub carrier, the electric motor and the means of hub braking.
  • the motorized hub is therefore intended on the one hand to receive a wheel equipped for example with a tire and to carry on the other hand a vehicle, generally by means of suspension means.
  • the term “motorized wheel” is also used to designate the mechanical assembly comprising the motorized hub defined above and the corresponding wheel.
  • the integration of electric motors inside the wheels is particularly desirable because the adoption of electric traction often passes by the need to ship batteries to store the electrical energy which, even with the most advanced technologies known to date, requires to devote a sufficient volume to the batteries in the vehicle, except greatly reduce the autonomy of an electric vehicle. Similar reasoning can be used for fuel cell or parallel hybrid vehicles. Even for a vehicle carrying few batteries, the integration of electric traction motors in the wheels o fers architectural possibilities of interest to the manufacturer because the latter is freed from certain constraints such as for example the integration of a differential on the axle.
  • parallel hybrid vehicles whose thermal engine generally allows to drive at relatively high speed (for example 150 km / h) represent a particular difficulty in choosing the reduction ratio of electric traction. Indeed, if the reduction ratio is chosen so that the electric motor (s) operate in their speed range when the vehicle is at its maximum speed, the reduction ratio will be rather small and the maximum torque at the wheel will be limited by 'as much.
  • the invention therefore proposes a motorized hub for the electric motorization of a wheel of a motor vehicle, said motorized hub comprising a hub for receiving a wheel, the hub being rotatably mounted relative to a hub carrier according to a hub axle, the motorized hub comprising an electric traction machine, the electric machine comprising an outer stator connected to the hub carrier and an inner rotor, the motorized hub comprising reduction means acting between a motor pinion integral with the rotor of the an electric machine and a ring gear secured to the hub, the motorized hub including coupling / decoupling means adapted to adopt a coupling position in which the rotation of the electric machine is coupled to the rotation of the hub and a decoupling position in which the machine rotation electrical connection is decoupled from the rotation of the hub, the motorized hub being characterized in that the reduction means comprise 3 stages of reduction using two intermediate shafts and a gear shift with 2 ratios by axial sliding and in that, the pinion motor meshing on
  • the electric machine having an axis of rotation of the rotor, the axis of rotation of the rotor is distant from the hub axis.
  • the axis of rotation of the rotor and the axes of the two intermediate shafts are parallel to the hub axis.
  • the hub carrier is a rocket around which rotates the hub.
  • a casing containing the reduction means and the coupling / decoupling means and carrying the electrical machine, said housing is rotatably mounted relative to the hub carrier, this rotation being effected. according to the hub axis and being controlled by an additional member to resume this degree of freedom.
  • the player is constantly rotatably connected to the second intermediate shaft, the player having cylindrical inner grooves, the grooves of the player being able to engage, in the coupling position, on external splines secured to the idler wheels.
  • the motorized hub further comprises a disc brake, the brake disc being placed outside the housing relative to the vehicle, the clamp being secured to the housing.
  • the invention also relates to a motorized wheel comprising a motorized hub as described above.
  • the invention also relates to a vehicle comprising at least two such motorized wheels.
  • the two motorized wheels are disposed on a rear axle of said vehicle, the hub carriers of the two motorized wheels each being integral with an arm pulled from the rear axle.
  • Figure 1 is a perspective view from inside the vehicle of a motorized wheel according to a preferred embodiment of the invention (tire not shown).
  • Figure 2 schematic side view of the embodiment of Figure 1 for identifying the different shafts and cutting planes of the following figures (rim and tire not shown).
  • FIG. 4 perspective view from outside the vehicle of the motor hub of Figure 1, the outer casing being omitted.
  • FIG. 5 view of the reduction means in section folded down along the broken line C-C visible in FIG. 2.
  • Figure 6 view of the coupling / uncoupling actuator in section folded down along the broken line E-E visible in Figure 2.
  • FIG. 7 is a perspective view from outside the vehicle of the motorized hub according to this embodiment.
  • Figures 1 to 7 show different views and details of the same preferred embodiment of a motorized hub and a motorized wheel according to the invention. The different references are not systematically included in each figure to simplify the understanding of the drawings.
  • the motorized hub 1 is intended to guide and control the rotation of a wheel 2.
  • the tire has been omitted in Figure 1 showing a bare wheel.
  • a hub 7, intended to receive the wheel 2 is rotatably mounted with respect to a hub carrier 5 along a hub axis M via a hub bearing 51 (FIG. 3).
  • An electric machine 3 provides the motorization and, if appropriate, the braking of the hub by means of reduction means 4. To lighten the drawing of the electric machine in FIG. 3, only the outer sleeve of the stator is shown. 32 and the rotor shaft 33.
  • the reduction means 4 comprise three reduction stages.
  • the drive pinion 41 is driven by the shaft 33 of the rotor.
  • the driving gear 41 meshes with an intermediate wheel 42 of a first intermediate shaft 43.
  • Two intermediate gears 44 and 45 are furthermore integral with the first intermediate shaft 43.
  • a second intermediate shaft 46 disposed parallel to the first intermediate shaft, carries two intermediate gears 47 and 48 mounted crazy (that is to say slippery). These two idlers are in constant engagement respectively with the two intermediate gears 44 and 45 of the first intermediate shaft 43.
  • An axial walkman 61 disposed on the second intermediate shaft makes it possible to establish or interrupt the transmission of torque between the second intermediate shaft and one or the other of the two idle wheels.
  • the second intermediate shaft 46 comprises a drive gear 49 which meshes with a ring gear 71 integral with the hub 7.
  • the central position of the player 61 in which no torque can be transmitted ensures the decoupling of the transmission. It is also understood that in the coupling position the reduction ratio is different depending on whether the coupling is established via a idler wheel or the other. In the example shown, the overall reduction ratio of the transmission is about 30 when the coupling is achieved via the largest (47) of the idlers and about 18 when the coupling is achieved by the intermediate of the smaller (48).
  • the player 61 comprises in known manner internal splines adapted to cooperate with corresponding external splines of a ring 62 integral with the second intermediate shaft 46 and the corresponding external splines (471 and 481) respectively integral with each of the two crazy wheels (47 and 48).
  • This type of coupling can be described as "cylindrical clutch".
  • the axial position of the player 61 is controlled by a fork 63 in three different positions, namely the two coupling positions and the central decoupling position.
  • the player In the central decoupling position, the player remains integral in rotation with the ring 62 and thus integral in rotation with the second intermediate shaft of the reduction means.
  • the player When the vehicle is traveling in decoupled mode and the electric machine is stopped, the player is rotated by the shaft 46 while the idler wheels 47 and 48 are stationary.
  • the range 63 which controls the player can be controlled by an actuator 64 screw 65 and nut 66 comprising a small electric motor-geared 67. Electromagnets could also provide this command.
  • actuator 64 screw 65 and nut 66 comprising a small electric motor-geared 67. Electromagnets could also provide this command.
  • the gear motor 67 controls the rotation of the screw 65 which moves the nut 66.
  • the nut is secured to a guide rod 68 on which is fixed the fork 63.
  • the guide rod 68 moves according to its T-axis parallel to the axis A2 of the second intermediate shaft 46.
  • the entire transmission that is to say all the functions of reduction and coupling / decoupling, is housed in a housing 8.
  • the housing 8 contains a suitable amount of lubricant to lubricate the assembly by bubbling.
  • the axis of rotation R of the rotor of the electric machine is preferably remote from the hub axis M and parallel thereto.
  • the stator 32 of the electric machine is rotatably connected to the hub carrier 5.
  • stator 32 is thus integral with the casing 8 while the casing itself can pivot (according to the hub axis M) relative to the hub carrier 5 and the hub 7.
  • the rotation of the casing relative to the hub carrier is then for example controlled by a connecting rod acting between the housing and the vehicle body.
  • the hub carrier 5 is preferably in the form of a rocket on which the hub bearing 51 is axially clamped by a nut 53 at its outer end.
  • the inner part of the hub bearing is thus fixed (integral with the rocket 5) and the outer part rotates with the hub 7.
  • the hub carrier 5 can be attached to the end of an arm pulled from an axle, for example a torsion rear axle of a hybrid vehicle whose front wheels are powered by a heat engine.
  • Figure 7 shows in perspective the motorized hub 1 of the previous figures, shown this time without a wheel, as seen from outside the vehicle.
  • the conventional braking system clamp 1 1 and disc 12
  • This view and that of Figure 1 show the compactness of the motorized hub according to the invention.
  • An advantageous way of constructing a hybrid vehicle is to combine a conventional thermal engine of the front axle with an electric motorization of the wheels of the rear axle according to the invention.
  • the source of electrical energy may be a set of batteries or supercapacitors, a fuel cell, an urban network in the manner of trolley buses or any other available electrical source.
  • the invention also relates to an electric vehicle using the motorized wheels of the invention on one of its axles while the other axle is also motorized electrically but in a different manner, for example via a permanent coupling and in a reduction ratio to achieve the maximum speed of the vehicle.
  • the reduction means are preferably reversible to allow the use of the electric machine in braking mode.
  • the electrical energy recovered by the electric machine in braking mode can be stored or dissipated in a manner known per se.
  • a motorized hub according to the invention thus allows to couple / decouple the electric motor at any time, and choose a reduction ratio among two, including during the movement of the vehicle.
  • the signal of the speed sensor of the corresponding wheel is preferably used to control the speed of rotation of the electric machine so that the idler wheel (47 or 48) adopts a rotation speed identical or close to that of the second intermediate shaft 46. It is then possible to cause the movement of the sliding device towards the target coupling position and at the same time to force the electric machine not to resist, beyond a certain value, an acceleration or deceleration (for example driving in zero torque) during the time of this movement of interconnection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention relates in particular to a motorized hub (1) for the electric drive of a wheel of a motor vehicle, said motorized hub comprising an electric traction machine (3), the electric machine comprising an external stator (32) connected to the hub carrier and an internal rotor, the motorized hub comprising reduction means (4), the motorized hub comprising coupling/uncoupling means, the motorized hub being characterized in that the reduction means comprise three reduction stages using two intermediate shafts (43, 46) and a two‑ratio gear change using an axial slider (61) and in that with the driving pinion meshing with a first intermediate shaft (43), the first intermediate shaft meshing with a second intermediate shaft (46) via intermediate pinions (44, 45) and intermediate gear wheels (47, 48), the second intermediate shaft meshing with the annulus gear (71) secured to the hub (7) and the axial slider (61) being arranged on the second intermediate shaft (46) between two intermediate gear wheels (47, 48) mounted to idle on the said second intermediate shaft, the change in ratio consists in coupling the second intermediate shaft to one or other of the two idling gear wheels using the axial slider, the uncoupled position of the coupling/uncoupling means being obtained by keeping the axial slider in a central position not coupled to either one of the two idling gear wheels.

Description

Moyeu motorisé comprenant un changement de rapport et des moyens de couplage et de découplage  Motorized hub comprising a gear change and coupling and decoupling means
[0001] La présente invention concerne la liaison au sol des véhicules automobiles à traction électrique, en particulier leurs roues motorisées. [0002] Dans ce domaine, on connaît un certain nombre de propositions comme celles des documents EP 0878332, EP 1382476, EP 1630026, WO 2006/032669, US 2007/0257570, WO 2007/083209, EP 1950072, WO 2009/124892, US 2010/0108417 ou WO 201 1/073320. The present invention relates to the ground connection of electric traction motor vehicles, in particular their motorized wheels. In this field, a number of proposals are known, such as those of EP 0878332, EP 1382476, EP 1630026, WO 2006/032669, US 2007/0257570, WO 2007/083209, EP 1950072, WO 2009/124892, US 2010/0108417 or WO 201 1/073320.
[0003] Dans la présente demande, on utilise l'expression « moyeu motorisé » pour désigner l'ensemble mécanique comprenant le moyeu, le porte-moyeu, le guidage du moyeu par rapport au porte-moyeu, la motorisation électrique et les moyens de freinage du moyeu. Le moyeu motorisé est donc destiné d'une part à recevoir une roue équipée par exemple d'un pneumatique et à porter d'autre part un véhicule, généralement par l'intermédiaire de moyens de suspension. Dans la présente demande, on utilise également l'expression « roue motorisée » pour désigner l'ensemble mécanique comprenant le moyeu motorisé défini ci-dessus et la roue correspondante. In the present application, the term "motorized hub" is used to designate the mechanical assembly comprising the hub, the hub carrier, the guide of the hub relative to the hub carrier, the electric motor and the means of hub braking. The motorized hub is therefore intended on the one hand to receive a wheel equipped for example with a tire and to carry on the other hand a vehicle, generally by means of suspension means. In the present application, the term "motorized wheel" is also used to designate the mechanical assembly comprising the motorized hub defined above and the corresponding wheel.
[0004] L'une des difficultés en vue de l'adoption de tels moyeux motorisés sur les véhicules de série est la compatibilité avec les solutions déjà adoptées et validées par les constructeurs pour certains éléments comme les systèmes de suspension et les roues. Une autre difficulté est d'obtenir un système compact, simple et le plus léger possible afin d'en rendre le coût acceptable pour cette industrie. One of the difficulties in adopting such motorized hubs on production vehicles is compatibility with solutions already adopted and validated by manufacturers for certain elements such as suspension systems and wheels. Another difficulty is to obtain a compact system, simple and as light as possible to make the cost acceptable for this industry.
[0005] En particulier, l'intégration des moteurs électriques à l'intérieur même des roues est particulièrement désirable parce que l'adoption de la traction électrique passe souvent par la nécessité d'embarquer des batteries pour stocker l'énergie électrique ce qui, même avec les technologies les plus performantes connues à ce jour, oblige à consacrer un volume suffisant aux batteries à bord du véhicule, sauf à réduire énormément l'autonomie d'un véhicule électrique. Un raisonnement similaire peut être fait dans le cas des véhicules à pile à combustible ou hybride parallèle. Même pour un véhicule embarquant peu de batteries, l'intégration des moteurs électriques de traction dans les roues o fifre des possibilités architecturales intéressantes au constructeur car ce dernier est libéré de certaines contraintes comme par exemple l'intégration d'un différentiel sur l'essieu. In particular, the integration of electric motors inside the wheels is particularly desirable because the adoption of electric traction often passes by the need to ship batteries to store the electrical energy which, even with the most advanced technologies known to date, requires to devote a sufficient volume to the batteries in the vehicle, except greatly reduce the autonomy of an electric vehicle. Similar reasoning can be used for fuel cell or parallel hybrid vehicles. Even for a vehicle carrying few batteries, the integration of electric traction motors in the wheels o fers architectural possibilities of interest to the manufacturer because the latter is freed from certain constraints such as for example the integration of a differential on the axle.
[0006] Par ailleurs, si l'on veut pouvoir développer un couple de traction suffisant, il s'avère judicieux d'installer des moyens de réduction car on ne peut pas, avec un moteur électrique suffisamment compact, développer un couple adéquat pour assurer directement la traction d'un véhicule de tourisme en maintenant une masse non suspendue raisonnable. Moreover, if one wants to develop a sufficient traction torque, it is advisable to install reduction means because we can not, with a sufficiently compact electric motor, develop adequate torque to ensure directly pulling a passenger vehicle by maintaining a reasonable unsprung mass.
[0007] De plus les véhicules hybrides parallèle dont le moteur thermique permet généralement de rouler à vitesse relativement élevée (par exemple 150 km/h) représentent une difficulté particulière quant au choix du rapport de réduction de la traction électrique. En effet, si le rapport de réduction est choisi pour que le ou les moteurs électriques fonctionnent dans leur plage de vitesse quand le véhicule est à sa vitesse maximale, le rapport de réduction sera plutôt petit et le couple maximal à la roue en sera limité d'autant. In addition parallel hybrid vehicles whose thermal engine generally allows to drive at relatively high speed (for example 150 km / h) represent a particular difficulty in choosing the reduction ratio of electric traction. Indeed, if the reduction ratio is chosen so that the electric motor (s) operate in their speed range when the vehicle is at its maximum speed, the reduction ratio will be rather small and the maximum torque at the wheel will be limited by 'as much.
[0008] Enfin, on est en général conduit à devoir intégrer à la roue, non seulement le moteur électrique, les moyens de réduction nécessaire associés, mais aussi un dispositif de freinage mécanique (frein à disque ou à tambour de friction). Finally, it is generally necessary to integrate the wheel, not only the electric motor, the necessary reduction means associated, but also a mechanical braking device (disk brake or friction drum).
[0009] L'invention a donc pour objet de résoudre tout ou partie de ces difficultés. [0010] L'invention propose donc un moyeu motorisé pour la motorisation électrique d'une roue d'un véhicule automobile, ledit moyeu motorisé comprenant un moyeu destiné à recevoir une roue, le moyeu étant monté rotatif par rapport à un porte-moyeu selon un axe de moyeu, le moyeu motorisé comprenant une machine électrique de traction, la machine électrique comprenant un stator externe lié au porte-moyeu et un rotor interne, le moyeu motorisé comprenant des moyens de réduction agissant entre un pignon moteur solidaire du rotor de la machine électrique et une couronne dentée solidaire du moyeu, le moyeu motorisé comprenant des moyens de couplage/découplage aptes à adopter une position de couplage dans laquelle la rotation de la machine électrique est couplée à la rotation du moyeu et une position de découplage dans laquelle la rotation de la machine électrique est découplée de la rotation du moyeu, le moyeu motorisé étant caractérisé en ce que les moyens de réduction comprennent 3 étages de réduction mettant en œuvre deux arbres intermédiaires et un changement de vitesses à 2 rapports par baladeur axial et en ce que, le pignon moteur engrenant sur un premier arbre intermédiaire, le premier arbre intermédiaire engrenant sur un deuxième arbre intermédiaire via des pignons intermédiaires et des roues intermédiaires, le deuxième arbre intermédiaire engrenant sur la couronne dentée solidaire du moyeu, le baladeur axial étant disposé sur le deuxième arbre intermédiaire entre deux roues intermédiaires montées folles sur ledit deuxième arbre intermédiaire, le changement de rapport consiste à coupler le deuxième arbre intermédiaire avec l'une ou l'autre des deux roues folles par l'intermédiaire du baladeur axial, la position de découplage des moyens de couplage/découplage étant obtenue en maintenant le baladeur axial en position centrale, hors de tout couplage avec les deux roues folles. The invention therefore aims to solve all or part of these difficulties. The invention therefore proposes a motorized hub for the electric motorization of a wheel of a motor vehicle, said motorized hub comprising a hub for receiving a wheel, the hub being rotatably mounted relative to a hub carrier according to a hub axle, the motorized hub comprising an electric traction machine, the electric machine comprising an outer stator connected to the hub carrier and an inner rotor, the motorized hub comprising reduction means acting between a motor pinion integral with the rotor of the an electric machine and a ring gear secured to the hub, the motorized hub including coupling / decoupling means adapted to adopt a coupling position in which the rotation of the electric machine is coupled to the rotation of the hub and a decoupling position in which the machine rotation electrical connection is decoupled from the rotation of the hub, the motorized hub being characterized in that the reduction means comprise 3 stages of reduction using two intermediate shafts and a gear shift with 2 ratios by axial sliding and in that, the pinion motor meshing on a first intermediate shaft, the first intermediate shaft meshing on a second intermediate shaft via intermediate gears and intermediate wheels, the second intermediate shaft meshing with the ring gear integral with the hub, the axial sliding gantry being disposed on the second intermediate shaft between two intermediate wheels mounted idle on said second intermediate shaft, the gear change is to couple the second intermediate shaft with one or the other of the two idlers via the axial sliding device, the decoupling position of the means of coupling / decoupling being achieved by maintaining axial walkman in central position, out of any coupling with the two crazy wheels.
[0011] De préférence, la machine électrique comportant un axe de rotation du rotor, l'axe de rotation du rotor est distant de l'axe de moyeu. Preferably, the electric machine having an axis of rotation of the rotor, the axis of rotation of the rotor is distant from the hub axis.
[0012] De préférence encore, l'axe de rotation du rotor et les axes des deux arbres intermédiaires sont parallèles à l'axe de moyeu. More preferably, the axis of rotation of the rotor and the axes of the two intermediate shafts are parallel to the hub axis.
[0013] De préférence, le porte-moyeu est une fusée autour de laquelle tourne le moyeu. [0014] Selon une variante de l'invention, un carter contenant les moyens de réduction et les moyens de couplage/découplage et portant la machine électrique, ledit carter est monté libre en rotation par rapport au porte-moyeu, cette rotation s 'effectuant selon l'axe de moyeu et étant contrôlée par un organe supplémentaire permettant de reprendre ce degré de liberté. [0015] De préférence, le baladeur est constamment solidaire en rotation du deuxième arbre intermédiaire, le baladeur comportant des cannelures intérieures cylindriques, les cannelures du baladeur étant aptes à s'engager, en position de couplage, sur des cannelures extérieures solidaires des roues folles. [0016] De préférence, le moyeu motorisé comprend en outre un frein à disque, le disque de frein étant placé à l'extérieur du carter par rapport au véhicule, la pince étant solidaire de carter. Preferably, the hub carrier is a rocket around which rotates the hub. According to a variant of the invention, a casing containing the reduction means and the coupling / decoupling means and carrying the electrical machine, said housing is rotatably mounted relative to the hub carrier, this rotation being effected. according to the hub axis and being controlled by an additional member to resume this degree of freedom. Preferably, the player is constantly rotatably connected to the second intermediate shaft, the player having cylindrical inner grooves, the grooves of the player being able to engage, in the coupling position, on external splines secured to the idler wheels. . Preferably, the motorized hub further comprises a disc brake, the brake disc being placed outside the housing relative to the vehicle, the clamp being secured to the housing.
[0017] L'invention concerne également une roue motorisée comprenant un moyeu motorisé tel que décrit ci-dessus. The invention also relates to a motorized wheel comprising a motorized hub as described above.
[0018] L'invention concerne également un véhicule comprenant au moins deux telles roues motorisées. The invention also relates to a vehicle comprising at least two such motorized wheels.
[0019] De préférence, les deux roues motorisées sont disposées sur un essieu arrière dudit véhicule, les porte-moyeux des deux roues motorisées étant chacun solidaires d'un bras tiré de l'essieu arrière. Preferably, the two motorized wheels are disposed on a rear axle of said vehicle, the hub carriers of the two motorized wheels each being integral with an arm pulled from the rear axle.
[0020] D'autres caractéristiques et avantages de l'invention apparaîtront grâce à la description d'un mode préféré de réalisation. Les figures représentent respectivement: Other features and advantages of the invention will become apparent from the description of a preferred embodiment. The figures represent respectively:
Figure 1 : vue en perspective depuis l'intérieur du véhicule d'une roue motorisée selon un mode de réalisation préféré de l'invention (pneu non représenté). Figure 1 is a perspective view from inside the vehicle of a motorized wheel according to a preferred embodiment of the invention (tire not shown).
- Figure 2 : vue de côté schématique du mode de réalisation de la figure 1 permettant de repérer les différents arbres et plans de coupe des figures suivantes (jante et pneu non représentés).  - Figure 2: schematic side view of the embodiment of Figure 1 for identifying the different shafts and cutting planes of the following figures (rim and tire not shown).
Figure 3 : vue en coupe selon la ligne brisée B-B visible à la figure 2 et en perspective du moyeu motorisé de la figure 1.  3: view in section along the broken line B-B visible in FIG. 2 and in perspective of the motorized hub of FIG.
- Figure 4 : vue en perspective depuis l'extérieur du véhicule du moyeu motorisé de la figure 1 , le carter extérieur étant omis.  - Figure 4: perspective view from outside the vehicle of the motor hub of Figure 1, the outer casing being omitted.
Figure 5 : vue des moyens de réduction en coupe rabattue selon la ligne brisée C- C visible à la figure 2.  FIG. 5: view of the reduction means in section folded down along the broken line C-C visible in FIG. 2.
Figure 6 : vue de l'actionneur de couplage/découplage en coupe rabattue selon la ligne brisée E-E visible à la figure 2.  Figure 6: view of the coupling / uncoupling actuator in section folded down along the broken line E-E visible in Figure 2.
Figure 7 : vue en perspective depuis l'extérieur du véhicule du moyeu motorisé selon ce mode de réalisation. [0021] Les figures 1 à 7 représentent différentes vues d'ensemble et de détails d'un même mode de réalisation préféré d'un moyeu motorisé et d'une roue motorisée selon l'invention. Les différentes références ne sont pas systématiquement reprises sur chaque figure afin de simplifier la compréhension des dessins. [0022] Le moyeu motorisé 1 est destiné à guider et contrôler la rotation d'une roue 2. Le pneumatique a été omis sur la figure 1 montrant une roue nue. Un moyeu 7, destiné à recevoir la roue 2, est monté tournant par rapport à un porte-moyeu 5 selon un axe de moyeu M par l'intermédiaire d'un roulement de moyeu 51 (figure 3). Figure 7 is a perspective view from outside the vehicle of the motorized hub according to this embodiment. Figures 1 to 7 show different views and details of the same preferred embodiment of a motorized hub and a motorized wheel according to the invention. The different references are not systematically included in each figure to simplify the understanding of the drawings. The motorized hub 1 is intended to guide and control the rotation of a wheel 2. The tire has been omitted in Figure 1 showing a bare wheel. A hub 7, intended to receive the wheel 2, is rotatably mounted with respect to a hub carrier 5 along a hub axis M via a hub bearing 51 (FIG. 3).
[0023] Une machine électrique 3 assure la motorisation et le cas échéant le freinage du moyeu par l'intermédiaire de moyens de réduction 4. Pour alléger le dessin de la machine électrique à la figure 3, on a représenté uniquement le fourreau extérieur du stator 32 et l'arbre du rotor 33. An electric machine 3 provides the motorization and, if appropriate, the braking of the hub by means of reduction means 4. To lighten the drawing of the electric machine in FIG. 3, only the outer sleeve of the stator is shown. 32 and the rotor shaft 33.
[0024] Les moyens de réduction 4 comprennent trois étages de réduction. Le pignon moteur 41 est entraîné par l'arbre 33 du rotor. Le pignon moteur 41 engrène avec une roue intermédiaire 42 d'un premier arbre intermédiaire 43. Deux pignons intermédiaires 44 et 45 sont en outre solidaires du premier arbre intermédiaire 43. The reduction means 4 comprise three reduction stages. The drive pinion 41 is driven by the shaft 33 of the rotor. The driving gear 41 meshes with an intermediate wheel 42 of a first intermediate shaft 43. Two intermediate gears 44 and 45 are furthermore integral with the first intermediate shaft 43.
[0025] Un deuxième arbre intermédiaire 46, disposé parallèlement au premier arbre intermédiaire, porte deux roues dentées intermédiaires 47 et 48 montées folles (c'est à dire glissantes). Ces deux roues folles sont en prise constante respectivement avec les deux pignons intermédiaires 44 et 45 du premier arbre intermédiaire 43. A second intermediate shaft 46, disposed parallel to the first intermediate shaft, carries two intermediate gears 47 and 48 mounted crazy (that is to say slippery). These two idlers are in constant engagement respectively with the two intermediate gears 44 and 45 of the first intermediate shaft 43.
[0026] Un baladeur axial 61 disposé sur le deuxième arbre intermédiaire permet d'établir ou d'interrompre la transmission de couple entre le deuxième arbre intermédiaire et l'une ou l'autre des deux roues folles. Le deuxième arbre intermédiaire 46 comporte un pignon d'entraînement 49 qui engrène avec une couronne dentée 71 solidaire du moyeu 7. An axial walkman 61 disposed on the second intermediate shaft makes it possible to establish or interrupt the transmission of torque between the second intermediate shaft and one or the other of the two idle wheels. The second intermediate shaft 46 comprises a drive gear 49 which meshes with a ring gear 71 integral with the hub 7.
[0027] On comprend que la position centrale du baladeur 61 dans laquelle aucun couple ne peut être transmis assure le découplage de la transmission. On comprend également qu'en position de couplage le rapport de réduction est différent selon que le couplage est établi par l'intermédiaire d'une roue folle ou de l'autre. Sur l'exemple représenté, le rapport de réduction globale de la transmission est d'environ 30 lorsque le couplage est réalisé par l'intermédiaire de la plus grande (47) des roues folles et d'environ 18 lorsque le couplage est réalisé par l'intermédiaire de la plus petite (48). [0028] Le baladeur 61 comporte de manière connue en soi des cannelures internes aptes à coopérer avec des cannelures externes correspondantes d'une bague 62 solidaire du deuxième arbre intermédiaire 46 et des cannelures externes correspondantes (471 et 481) solidaires respectivement de chacune des deux roues folles (47 et 48). Ce type de couplage peut être qualifié de « crabotage cylindrique ». [0029] La position axiale du baladeur 61 est contrôlée par une fourchette 63 selon trois postions différentes, à savoir les deux positions de couplage et la position centrale de découplage. Dans la position centrale de découplage, le baladeur reste solidaire en rotation de la bague 62 et donc solidaire en rotation du deuxième arbre intermédiaire des moyens de réduction. Lorsque le véhicule roule en mode découplé et que la machine électrique est arrêtée, le baladeur est donc entraîné en rotation par l'arbre 46 alors que les roues folles 47 et 48 sont immobiles. It is understood that the central position of the player 61 in which no torque can be transmitted ensures the decoupling of the transmission. It is also understood that in the coupling position the reduction ratio is different depending on whether the coupling is established via a idler wheel or the other. In the example shown, the overall reduction ratio of the transmission is about 30 when the coupling is achieved via the largest (47) of the idlers and about 18 when the coupling is achieved by the intermediate of the smaller (48). The player 61 comprises in known manner internal splines adapted to cooperate with corresponding external splines of a ring 62 integral with the second intermediate shaft 46 and the corresponding external splines (471 and 481) respectively integral with each of the two crazy wheels (47 and 48). This type of coupling can be described as "cylindrical clutch". The axial position of the player 61 is controlled by a fork 63 in three different positions, namely the two coupling positions and the central decoupling position. In the central decoupling position, the player remains integral in rotation with the ring 62 and thus integral in rotation with the second intermediate shaft of the reduction means. When the vehicle is traveling in decoupled mode and the electric machine is stopped, the player is rotated by the shaft 46 while the idler wheels 47 and 48 are stationary.
[0030] La fourchette 63 qui commande le baladeur peut être contrôlée par un actionneur 64 à vis 65 et écrou 66 comprenant un petit moto -réducteur électrique 67. Des électro-aimants pourraient également assurer cette commande. [0031] On voit plus précisément à la figure 6 le principe de l'actionneur électriqueThe range 63 which controls the player can be controlled by an actuator 64 screw 65 and nut 66 comprising a small electric motor-geared 67. Electromagnets could also provide this command. We see more precisely in Figure 6 the principle of the electric actuator
64. Le moto -réducteur 67 contrôle la rotation de la vis 65 qui déplace l'écrou 66. L'écrou est solidaire d'une tige de guidage 68 sur laquelle est fixée la fourchette 63. La tige de guidage 68 se déplace selon son axe T parallèle à l'axe A2 du deuxième arbre intermédiaire 46. [0032] L'ensemble de la transmission, c'est à dire l'ensemble des fonctions de réduction et de couplage/découplage, est logé dans un carter 8. Le carter 8 contient une quantité adéquate d'un lubrifiant afin de lubrifier l'ensemble par barbotage. [0033] L'axe de rotation R du rotor de la machine électrique est de préférence distant de l'axe de moyeu M et parallèle à celui-ci. Le stator 32 de la machine électrique est lié en rotation au porte-moyeu 5. Cette liaison, nécessaire à la transmission du couple, peut être rigide et directe, comme représenté ici, mais elle peut également être indirecte afin d'autoriser un mouvement relatif de rotation à l'occasion des débattements de suspension. Ce mouvement relatif est bien sûr limité et a pour but de permettre une certaine indépendance entre le couple transmis et les rigidités dynamiques (verticale et horizontale) du dispositif de suspension. Dans ce cas, le stator 32 est donc solidaire du carter 8 alors que le carter peut lui-même pivoter (selon l'axe de moyeu M) par rapport au porte-moyeu 5 et au moyeu 7. La rotation du carter par rapport au porte-moyeu est alors par exemple contrôlée par une bielle agissant entre le carter et la caisse du véhicule. 64. The gear motor 67 controls the rotation of the screw 65 which moves the nut 66. The nut is secured to a guide rod 68 on which is fixed the fork 63. The guide rod 68 moves according to its T-axis parallel to the axis A2 of the second intermediate shaft 46. The entire transmission, that is to say all the functions of reduction and coupling / decoupling, is housed in a housing 8. The housing 8 contains a suitable amount of lubricant to lubricate the assembly by bubbling. The axis of rotation R of the rotor of the electric machine is preferably remote from the hub axis M and parallel thereto. The stator 32 of the electric machine is rotatably connected to the hub carrier 5. This connection, necessary for the transmission of the torque, can be rigid and direct, as shown here, but it can also be indirect in order to allow relative movement rotation on the occasion of suspension travel. This relative movement is of course limited and aims to allow a certain independence between the transmitted torque and the dynamic rigidities (vertical and horizontal) of the suspension device. In this case, the stator 32 is thus integral with the casing 8 while the casing itself can pivot (according to the hub axis M) relative to the hub carrier 5 and the hub 7. The rotation of the casing relative to the hub carrier is then for example controlled by a connecting rod acting between the housing and the vehicle body.
[0034] Le porte-moyeu 5 a de préférence la forme d'une fusée sur laquelle le roulement de moyeu 51 est axialement serré par un écrou 53 à son extrémité extérieure. La partie intérieure du roulement de moyeu est donc fixe (solidaire de la fusée 5) et la partie extérieure tourne avec le moyeu 7. The hub carrier 5 is preferably in the form of a rocket on which the hub bearing 51 is axially clamped by a nut 53 at its outer end. The inner part of the hub bearing is thus fixed (integral with the rocket 5) and the outer part rotates with the hub 7.
[0035] Le porte-moyeu 5 peut être fixé au bout d'un bras tiré d'un essieu, par exemple un essieu arrière torsible d'un véhicule hybride dont les roues avant sont motorisées par un moteur thermique. [0036] La figure 7 montre en perspective le moyeu motorisé 1 des figures précédentes, représenté cette fois sans roue, tel que vu depuis l'extérieur du véhicule. On voit bien le système de freinage conventionnel (pince 1 1 et disque 12), le carter 8 et la machine électrique 3. Cette vue et celle de la figure 1 montrent bien la grande compacité du moyeu motorisé selon l'invention. [0037] Une manière avantageuse de construire un véhicule hybride est de combiner une motorisation thermique conventionnelle de l'essieu avant avec une motorisation électrique des roues de l'essieu arrière selon l'invention. La source d'énergie électrique peut être un ensemble de batteries ou de super-condensateurs, une pile à combustible, un réseau urbain à la manière des trolley-bus ou toute autre source électrique disponible. The hub carrier 5 can be attached to the end of an arm pulled from an axle, for example a torsion rear axle of a hybrid vehicle whose front wheels are powered by a heat engine. Figure 7 shows in perspective the motorized hub 1 of the previous figures, shown this time without a wheel, as seen from outside the vehicle. We can see the conventional braking system (clamp 1 1 and disc 12), the housing 8 and the electric machine 3. This view and that of Figure 1 show the compactness of the motorized hub according to the invention. An advantageous way of constructing a hybrid vehicle is to combine a conventional thermal engine of the front axle with an electric motorization of the wheels of the rear axle according to the invention. The source of electrical energy may be a set of batteries or supercapacitors, a fuel cell, an urban network in the manner of trolley buses or any other available electrical source.
[0038] L'invention concerne également un véhicule électrique utilisant les roues motorisées de l'invention sur l'un de ses essieux alors que l'autre essieu est également motorisé électriquement mais de manière différente, par exemple par l'intermédiaire d'un couplage permanent et selon un rapport de réduction permettant d'atteindre la vitesse maximale du véhicule. The invention also relates to an electric vehicle using the motorized wheels of the invention on one of its axles while the other axle is also motorized electrically but in a different manner, for example via a permanent coupling and in a reduction ratio to achieve the maximum speed of the vehicle.
[0039] Sur les différentes figures, on a représenté une seule machine électrique.In the different figures, there is shown a single electric machine.
Naturellement, on peut selon l'invention mettre en œuvre deux ou plusieurs machines pour chaque moyeu, les machines engrenant chacune par l'intermédiaire d'un pignon moteur propre sur des moyens de réduction communs. Grâce à une motorisation multiple, on peut augmenter le couple disponible et/ou réduire les dimensions axiale et radiale des machines électriques. Naturally, it is possible according to the invention to implement two or more machines for each hub, the machines each meshing by means of a clean motor gear on common reduction means. Thanks to a multiple motorization, it is possible to increase the available torque and / or to reduce the axial and radial dimensions of the electrical machines.
[0040] De même, on a représenté un frein à disque. Il s'agit d'un mode de réalisation préféré mais l'homme du métier sait que dans certaines situations, il peut être préférable d'utiliser un frein à tambour en lieu et place du frein à disque. Similarly, there is shown a disk brake. This is a preferred embodiment but one skilled in the art knows that in some situations it may be preferable to use a drum brake instead of the disc brake.
[0041] Quel que soit le mode de réalisation de l'invention, les moyens de réduction sont de préférence réversibles afin de permettre l'utilisation de la machine électrique en mode freinage. L'énergie électrique récupérée par la machine électrique en mode freinage peut être stockée ou dissipée de manière connue en soi. Whatever the embodiment of the invention, the reduction means are preferably reversible to allow the use of the electric machine in braking mode. The electrical energy recovered by the electric machine in braking mode can be stored or dissipated in a manner known per se.
[0042] Un moyeu motorisé selon l'invention permet donc de coupler/découpler la motorisation électrique à tout moment, et de choisir un rapport de réduction parmi deux, y compris pendant le déplacement du véhicule. Pour permettre un découplage sans à-coup, il est préférable de commander la machine électrique pour qu'elle transmette un couple nul ou très faible au moment du mouvement du baladeur vers sa position de découplage. Pour permettre la synchronisation lors de l'opération de couplage, on utilise de préférence le signal du capteur de vitesse de la roue correspondante pour commander la vitesse de rotation de la machine électrique de façon à ce que la roue folle (47 ou 48) adopte une vitesse de rotation identique ou proche de celle du deuxième arbre intermédiaire 46. On peut alors provoquer le mouvement du baladeur vers la position de couplage visée et simultanément imposer à la machine électrique de ne pas résister au-delà d'une certaine valeur à une accélération ou décélération (par exemple pilotage en couple nul) pendant le temps de ce mouvement de crabotage. A motorized hub according to the invention thus allows to couple / decouple the electric motor at any time, and choose a reduction ratio among two, including during the movement of the vehicle. To allow decoupling smoothly, it is preferable to control the electric machine so that it transmits a zero or very low torque at the time of the movement of the player to its decoupling position. To enable synchronization during the coupling operation, the signal of the speed sensor of the corresponding wheel is preferably used to control the speed of rotation of the electric machine so that the idler wheel (47 or 48) adopts a rotation speed identical or close to that of the second intermediate shaft 46. It is then possible to cause the movement of the sliding device towards the target coupling position and at the same time to force the electric machine not to resist, beyond a certain value, an acceleration or deceleration (for example driving in zero torque) during the time of this movement of interconnection.

Claims

Revendications claims
1 — Moyeu motorisé (1) pour la motorisation électrique d'une roue d'un véhicule automobile, ledit moyeu motorisé comprenant un moyeu (7) destiné à recevoir une roue (2), le moyeu étant monté rotatif par rapport à un porte-moyeu (5) selon un axe de moyeu (M), le moyeu motorisé comprenant une machine électrique de traction (3), la machine électrique comprenant un stator externe (32) lié au porte-moyeu et un rotor interne, le moyeu motorisé comprenant des moyens de réduction (4) agissant entre un pignon moteur (41) solidaire du rotor de la machine électrique et une couronne dentée (71) solidaire du moyeu, le moyeu motorisé comprenant des moyens de couplage/découplage aptes à adopter une position de couplage dans laquelle la rotation de la machine électrique est couplée à la rotation du moyeu et une position de découplage dans laquelle la rotation de la machine électrique est découplée de la rotation du moyeu, le moyeu motorisé étant caractérisé en ce que les moyens de réduction comprennent 3 étages de réduction mettant en œuvre deux arbres intermédiaires (43, 46) et un changement de vitesses à 2 rapports par baladeur axial (61) et en ce que, le pignon moteur engrenant sur un premier arbre intermédiaire (43), le premier arbre intermédiaire engrenant sur un deuxième arbre intermédiaire (46) via des pignons intermédiaires (44, 45) et des roues intermédiaires (47, 48) , le deuxième arbre intermédiaire engrenant sur la couronne dentée (71) solidaire du moyeu (7), le baladeur axial (61) étant disposé sur le deuxième arbre intermédiaire (46) entre deux roues intermédiaires montées folles (47, 48) sur ledit deuxième arbre intermédiaire, le changement de rapport consiste à coupler le deuxième arbre intermédiaire avec l'une ou l'autre des deux roues folles par l'intermédiaire du baladeur axial, la position de découplage des moyens de couplage/découplage étant obtenue en maintenant le baladeur axial en position centrale, hors de tout couplage avec les deux roues folles. 1 - Motorized hub (1) for the electric motorization of a wheel of a motor vehicle, said motorized hub comprising a hub (7) for receiving a wheel (2), the hub being rotatably mounted relative to a carrier hub (5) according to a hub axis (M), the motorized hub comprising an electric traction machine (3), the electric machine comprising an outer stator (32) connected to the hub carrier and an inner rotor, the motorized hub comprising reduction means (4) acting between an engine pinion (41) integral with the rotor of the electric machine and a ring gear (71) integral with the hub, the motorized hub comprising coupling / decoupling means adapted to adopt a coupling position in which the rotation of the electric machine is coupled to the rotation of the hub and a decoupling position in which the rotation of the electric machine is decoupled from the rotation of the hub, the motorized hub being characterized in that The reduction means comprise three stages of reduction using two intermediate shafts (43, 46) and a two-speed shifting by axial sliding means (61) and in that the motor pinion meshing with a first intermediate shaft (43). ), the first intermediate shaft meshing with a second intermediate shaft (46) via intermediate gears (44, 45) and intermediate wheels (47, 48), the second intermediate shaft meshing with the ring gear (71) integral with the hub ( 7), the axial sliding device (61) being disposed on the second intermediate shaft (46) between two idler mounted intermediate wheels (47, 48) on said second intermediate shaft, the gear change is to couple the second intermediate shaft with the one or the other of the two idle wheels via the axial sliding device, the decoupling position of the coupling / decoupling means being obtained by maintaining the axial sliding device in the central position. the, out of any coupling with the two crazy wheels.
2 - Moyeu motorisé selon la revendication 1 , la machine électrique comportant un axe de rotation du rotor (R), l'axe de rotation du rotor étant distant de l'axe de moyeu (M). 3 - Moyeu motorisé (1) selon la revendication 2 dans lequel l'axe de rotation du rotor (R) et les axes (Al, A2) des deux arbres intermédiaires (43, 46) sont parallèles à l'axe de moyeu (M). 4 - Moyeu motorisé (1) selon l'une des revendications précédentes dans lequel le porte- moyeu (5) est une fusée autour de laquelle tourne le moyeu (7). 2 - motorized hub according to claim 1, the electric machine having an axis of rotation of the rotor (R), the axis of rotation of the rotor being distant from the hub axis (M). 3 - motorized hub (1) according to claim 2 wherein the axis of rotation of the rotor (R) and the axes (Al, A2) of the two intermediate shafts (43, 46) are parallel to the hub axis (M ). 4 - motorized hub (1) according to one of the preceding claims wherein the hub carrier (5) is a rocket around which rotates the hub (7).
5 - Moyeu motorisé (1) selon l'une des revendications précédentes dans lequel un carter (8) contenant les moyens de réduction et les moyens de couplage/découplage et portant la machine électrique (3), ledit carter est monté libre en rotation par rapport au porte-moyeu (5), cette rotation s'effectuant selon l'axe de moyeu (M) et étant contrôlée par un organe supplémentaire permettant de reprendre ce degré de liberté. 5 - Motorized hub (1) according to one of the preceding claims wherein a housing (8) containing the reduction means and the coupling / decoupling means and carrying the electric machine (3), said housing is rotatably mounted by relative to the hub-carrier (5), this rotation being effected along the hub axis (M) and being controlled by an additional member making it possible to take up this degree of freedom.
6 - Moyeu motorisé (1) selon l'une des revendications précédentes dans lequel le baladeur (61) est constamment solidaire en rotation du deuxième arbre intermédiaire, le baladeur comportant des cannelures intérieures cylindriques, les cannelures du baladeur étant aptes à s'engager, en position de couplage, sur des cannelures extérieures (471 , 481) solidaires des roues folles. 7 - Moyeu motorisé (1) selon l'une des revendications précédentes comprenant en outre un frein à disque (11, 12), le disque de frein (12) étant placé à l'extérieur du carter (8) par rapport au véhicule, la pince (11) étant solidaire de carter. 6 - motorized hub (1) according to one of the preceding claims wherein the player (61) is constantly rotatably connected to the second intermediate shaft, the player having cylindrical inner grooves, the grooves of the player being able to engage, in the coupling position, on external splines (471, 481) integral with the idler wheels. 7 - motorized hub (1) according to one of the preceding claims further comprising a disc brake (11, 12), the brake disc (12) being placed outside the housing (8) relative to the vehicle, the clamp (11) being secured to the housing.
8 - Roue motorisée (1, 2) comprenant un moyeu motorisé (1) selon l'une des revendications précédentes. 8 - Motorized wheel (1, 2) comprising a motorized hub (1) according to one of the preceding claims.
9 - Véhicule comprenant au moins deux roues motorisées selon la revendication 8. 9 - Vehicle comprising at least two motorized wheels according to claim 8.
10 - Véhicule selon la revendication 9 dans lequel deux roues motorisées sont disposées sur un essieu arrière dudit véhicule, les porte-moyeux (5) des deux roues motorisées étant chacun solidaires d'un bras tiré de l'essieu arrière. 10 - Vehicle according to claim 9 wherein two motorized wheels are disposed on a rear axle of said vehicle, the hub carriers (5) of the two motorized wheels each being integral with an arm pulled from the rear axle.
EP13741709.3A 2012-07-20 2013-07-22 Motorized hub comprising a change in ratio and coupling and uncoupling means Withdrawn EP2874841A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1257043A FR2993498B1 (en) 2012-07-20 2012-07-20 MOTORIZED HUB COMPRISING REVERSE CHANGE AND COUPLING AND DECOUPLING MEANS
PCT/EP2013/065382 WO2014013084A1 (en) 2012-07-20 2013-07-22 Motorized hub comprising a change in ratio and coupling and uncoupling means

Publications (1)

Publication Number Publication Date
EP2874841A1 true EP2874841A1 (en) 2015-05-27

Family

ID=47227934

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13741709.3A Withdrawn EP2874841A1 (en) 2012-07-20 2013-07-22 Motorized hub comprising a change in ratio and coupling and uncoupling means

Country Status (4)

Country Link
EP (1) EP2874841A1 (en)
CN (1) CN104487272A (en)
FR (1) FR2993498B1 (en)
WO (1) WO2014013084A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3019106A1 (en) * 2014-03-25 2015-10-02 Michelin & Cie MOTORIZED HUB FOR AN ELECTRIC TRACTION VEHICLE
JP6125066B1 (en) * 2016-03-08 2017-05-10 Ntn株式会社 In-wheel motor drive device
US10882389B2 (en) 2016-05-06 2021-01-05 Allison Transmission, Inc. Axle assembly with electric motor
RU2633129C1 (en) 2016-08-24 2017-10-11 Общество с ограниченной ответственностью "Полимагнит Санкт-Петербург" Vehicle motor wheel and vehicle with such motor wheel
JP6786354B2 (en) * 2016-10-31 2020-11-18 Ntn株式会社 In-wheel motor drive
USD883864S1 (en) 2018-05-10 2020-05-12 Allison Transmission, Inc. Axle assembly
USD927578S1 (en) 2018-09-27 2021-08-10 Allison Transmission, Inc. Axle assembly

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1165217A (en) * 1965-10-22 1969-09-24 Int Harvester Co Four Wheel Drive for Vehicles
US4431073A (en) * 1981-12-03 1984-02-14 Fairfield Manufacturing Co., Inc. Two speed final drive gear box
FR2763284A1 (en) 1997-05-16 1998-11-20 Conception & Dev Michelin Sa PACKAGE INCLUDING A WHEEL AND INTEGRATED WHEEL SUSPENSION
DE19858124C2 (en) * 1998-12-16 2003-06-18 Naf Neunkirchener Achsenfabrik Wheel Drive
FR2842147A1 (en) 2002-07-15 2004-01-16 Conception & Dev Michelin Sa DRIVE CHAIN HAVING A GEAR CHANGE MECHANISM INTEGRATED IN A WHEEL
DE602004008706T2 (en) * 2003-07-09 2008-06-12 Michelin Recherche Et Technique S.A. A method of changing gear of a drive train having a switching mechanism for each drive wheel
DE10338659A1 (en) 2003-08-22 2005-03-17 Magnet-Motor Gesellschaft Für Magnetmotorische Technik Mbh Electric drive unit for a motor vehicle
CN2679422Y (en) * 2004-03-12 2005-02-16 重庆青山工业有限责任公司 Mechanical synchronuse speed variator
JP4360305B2 (en) 2004-08-25 2009-11-11 トヨタ自動車株式会社 In-wheel motor housing structure
FR2875439B1 (en) 2004-09-21 2007-03-02 Conception & Dev Michelin Sa GROUND CONNECTION FOR A VEHICLE COMPRISING A WHEEL AND AN INTEGRATED SUSPENSION WITH A WHEEL
JP2007191019A (en) 2006-01-18 2007-08-02 Toyota Motor Corp Wheel drive
JP2008183956A (en) 2007-01-29 2008-08-14 Mazda Motor Corp Arrangement structure of vehicle driving device
JP5246466B2 (en) * 2007-10-19 2013-07-24 アイシン・エィ・ダブリュ株式会社 Hybrid drive device
FR2929889B1 (en) 2008-04-11 2010-04-09 Michelin Soc Tech MOTORIZED HUB FOR A MOTOR VEHICLE WITH ELECTRICAL DRIVING
US20100108417A1 (en) 2008-10-31 2010-05-06 Curt Douglas Gilmore Parallel power supplies for hev applications
FR2953773B1 (en) * 2009-12-16 2012-04-27 Michelin Soc Tech MOTORIZED HUB COMPRISING MEANS FOR COUPLING AND DECOUPLING.
WO2011114008A1 (en) * 2010-03-17 2011-09-22 Societe De Technologie Michelin Motor-driven hub including an electric traction machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014013084A1 *

Also Published As

Publication number Publication date
FR2993498B1 (en) 2014-07-04
FR2993498A1 (en) 2014-01-24
WO2014013084A1 (en) 2014-01-23
CN104487272A (en) 2015-04-01

Similar Documents

Publication Publication Date Title
EP2512855B1 (en) Motorised hub with coupling/decoupling means
WO2014013084A1 (en) Motorized hub comprising a change in ratio and coupling and uncoupling means
CN102762441B (en) Electrically assisted bicycle
EP2588337B1 (en) Motorised hub with an electric drive
EP2001696B1 (en) Ground interface for a vehicle
WO2011114008A1 (en) Motor-driven hub including an electric traction machine
FR2959174A1 (en) VEHICLE WITH ELECTRICAL DRIVE
EP2279089A2 (en) Motorised hub for a motor vehicle with an electric drive
EP2790941A1 (en) Electrically powered vehicle
WO2013092300A1 (en) Motor-driven hub for electrically driving an axle of a hybrid-drive motor vehicle
FR2844858A1 (en) Motor vehicle differential incorporates electrically-driven actuator to accelerate rotation of faster half-shaft and brake slower one on turns
FR2742703A1 (en) Differential transmission for hybrid powered vehicle
WO2013092301A1 (en) Motor-driven hub for electrically driving an axle of a hybrid-drive motor vehicle
FR3056160A1 (en) TRANSMISSION FOR MOTOR VEHICLE WITH ELECTRIC PROPULSION
FR2631588A1 (en) Energy transmission apparatus, particularly for a four-wheel drive vehicle
WO2013092298A9 (en) Motor-driven hub for electrically driving an axle of a hybrid-drive motor vehicle
FR3077536A1 (en) TWO-SPEED TRANSMISSION DEVICE FOR ELECTRIC VEHICLE
EP2794321A1 (en) Motor-driven hub for electrically driving an axle of a hybrid-drive motor vehicle
FR3115736A1 (en) Powertrain for a motor vehicle with electric propulsion or traction and associated control method
WO2020216870A1 (en) Torque transmission system for a hybrid or electric vehicle
FR3141891A1 (en) Axle for electric vehicle with two speed ratios and vehicle comprising such an axle
FR2858381A1 (en) Differential for motor vehicle, has electrical machine operating in engine mode or generator mode and rotatably driving auxiliary tubular propeller shaft in any direction with controlled and variable speed
FR2930483A1 (en) Transmission for e.g. hybrid motor vehicle, has locking device i.e. jaw clutch, provided between electric motor and differential for permitting alternative driving of differential or winch for winding cable
FR2966093A1 (en) Coupling device for coupling electric machine of transmission system of thermal-electric hybrid vehicle, has integrating unit to integrate parts of shaft and to allow passage of torque of reducer toward wheel associated with shaft
FR2792985A1 (en) Transversal motor/propelling unit for car has epicyclical gear train mounted downstream of speed changer, and uses common gear train and speed changer shaft to one wheel

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150220

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20160322