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EP2380260A1 - Device for producing torque, in particular an orientation device - Google Patents

Device for producing torque, in particular an orientation device

Info

Publication number
EP2380260A1
EP2380260A1 EP09785777A EP09785777A EP2380260A1 EP 2380260 A1 EP2380260 A1 EP 2380260A1 EP 09785777 A EP09785777 A EP 09785777A EP 09785777 A EP09785777 A EP 09785777A EP 2380260 A1 EP2380260 A1 EP 2380260A1
Authority
EP
European Patent Office
Prior art keywords
ring
pinion
rotor
concentric
speed reducer
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Withdrawn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
EP09785777A
Other languages
German (de)
French (fr)
Inventor
Jean-Marie Van Appelghem
Vincent Bourquin
André Wacinski
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.)
NUMEXIA SA
Original Assignee
NUMEXIA SA
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 NUMEXIA SA filed Critical NUMEXIA SA
Publication of EP2380260A1 publication Critical patent/EP2380260A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • Device for producing torque in particular an orientation device
  • the present invention relates to a torque generating device, more particularly to a device comprising an electric motor and a speed reducer.
  • a speed reducer thus generally comprises an input shaft which rotates at the rotational speed of the motor, an output shaft and, in between, speed reducing members which enable the output shaft to rotate. at a lower speed than the engine.
  • speed reducer in a known type of speed reducer, called cycloidal or trochoidal reducer
  • the input shaft has an eccentric peripheral face with which the speed reduction members cooperate. Examples of cycloidal speed reducers are described in US Pat. No. 4,194,415, US Pat. No. 4,526,064 and EP 0 291 052.
  • a disadvantage of speed reducers is that by interposing between the motor and the mechanism to be controlled, they increase the overall size, in particular the axial size.
  • the present invention aims at providing a device for producing torque with reduced axial dimensions.
  • a torque generating device comprising an electric motor, a speed reducer and a rotational output member coupled to the speed reducer, the speed reducer comprising a rotatable rotating input member. at the speed of rotation of the motor and means cooperating with the rotary input member for rotating the output rotary member at a speed lower than the rotational speed of the engine, characterized in that the electric motor comprises a stator and a rotor surrounding the stator and in that the rotor constitutes said rotational input member of the speed reducer.
  • FIG. 1 is an axial sectional view of a torque generating device according to a first embodiment of the invention.
  • FIG. 2 is an axial sectional view of a torque generating device according to a second embodiment of the invention.
  • a torque generating device comprises a frame 1 consisting of several parts rigidly joined to each other.
  • the frame 1 more specifically comprises an annular support plate 2, an outer ring 3, an intermediate ring 4 held between the lower face of the support plate 2 and the upper face of the outer ring 3 by clamping screws 5 or any another suitable means of assembly, a meshing ring 6 mounted in the central bore of the annular plate 1 and bearing on the upper face of the intermediate ring 4 and an annular upper portion 7 resting on the upper face of the meshing ring 6, the assembly 4, 6, 7 being held by clamping screws 8 or any other suitable means of assembly.
  • the parts 2, 3, 4, 6, 7 forming the frame 1 are concentric about an imaginary axis designated in FIG.
  • a part 10 concentric with the axis 9 defines a cylindrical central part 11, or hub, extending along the axis 9 inside the frame 1, and an upper plate 12 extending in a plane transverse to the axis 9 at the upper end of the hub 11.
  • the plate 12 is fixed at its peripheral portion 13, for example by screws (not visible in Figure 1), an upper annular face of the upper frame portion 7.
  • the part 10, with its hub 11 and its upper plate 12 is rigidly fixed to the frame 1.
  • the part 10 has a central axial through bore 14 allowing for example the passage of electric cables.
  • the stator 15 typically comprises, in a manner well known per se, a stack of conductive sheets interconnected by electric cables.
  • the stator 15 is surrounded by an electric motor rotor 16, comprising a body 17 and permanent magnets 18 fixed on the cylindrical internal face 19 of the body 17, opposite the stator 15.
  • the motor formed by the stator 15 and the rotor 16 operates as a conventional electric motor, that is to say that the supply of the stator 15 electric current causes a rotation of the rotor 16 about the axis 9 without contact between the stator 15 and the rotor 16.
  • the stator 15 is here located inside and the rotor 16 outside.
  • the stator 15 and the inner face 19 of the rotor body 17, which carries the magnets 18, are concentric with the axis 9.
  • the outer face of the rotor body 17 comprises a cylindrical upper portion 20 and a cylindrical lower portion 21 which are concentric with the axis 9 and a cylindrical central portion 22, larger in diameter than the parts 20 and 21, which is eccentric with respect to the axis 9.
  • the eccentricity of the middle portion 22 is low, it is inconspicuous in Figure 1.
  • An upper ring 23 and a lower ring 24 cooperate by their inner face respectively with the upper and lower portions 21 of the outer face of the rotor body 17 by means of respective first and second bearings 25, 26.
  • An annular gear 27 having an external toothing 28 cooperates on its inner face with the eccentric middle part 22 of the outer face of the rotor body 17 by means of a third bearing 29.
  • the external toothing 28 of the pinion 27 meshes with an internal toothing of the 6 meshing crown but has one tooth less than this internal toothing.
  • the outer face of the upper ring 23 cooperates with the inner face of the upper frame part 7 by means of a fourth bearing 30.
  • An inner ring 31 concentric with the axis 9 cooperates on its outside with the inner face. the outer ring 3 via a fifth bearing 32.
  • the bearings 25, 26, 29, 30 and 32 are for example ball or roller bearings.
  • the inner ring 31 is fixed rigidly against the lower face of the lower ring 24.
  • the inner ring 31 is held by clamping screws 33 or any other suitable means of assembly between the lower face of the lower ring 24 and the upper face of an upper rim 34 of an output shaft or drive shaft 35 concentric with the axis 9.
  • the upper and lower rings 23, 24 are fixed rigidly to one another by pins 36 which pass through bores of the pinion 27 having a greater section than the pins 36.
  • the rotary assembly 16, 23-29, 31 is held assembled and fixed axially relative to the frame 1 in particular by shoulders provided on the outer face of the body rotor 17 and on the rings 23, 24, by the bearing 30 bearing against the plate 12 and the frame 1, by the bearing 32 and by the screws 33.
  • the torque producing device illustrated in FIG. 1 operates in the following manner.
  • the rotation of the eccentric portion 22 and the meshing between the pinion 27 and the meshing ring 6 make the pinion 27 a rotational movement around the axis 9 combined with a gyration movement.
  • the rotational movement of the pinion 27 is performed at a lower speed, and even much lower, at the speed of rotation of the rotor 16.
  • This rotational movement is communicated to the upper and lower rings 23, 24 by the pins 36 which can move in the corresponding bores of the pinion 27.
  • the inner ring 31 and the output shaft 35 are integral with the rings 23, 24 and therefore rotate concentrically around the axis 9, relative to the frame 1, at a speed much lower than that of the rotor 16. A high torque can thus be produced with a small engine.
  • the rotary assembly constituted by the upper and lower rings 23, 24, the pinion 27 and the inner ring 31 is guided by the bearings 30 and 32.
  • the output shaft 35 is connected at its lower end (not shown) to a set of wheels of a vehicle, such as a handling vehicle, a bus, a plane, etc. to form a steerable wheel train by the device according to the invention.
  • the device according to the invention not only has a function of orientation of the wheels but also a function of recovery of the forces exerted by the ground, these forces being in fact transmitted by the output shaft 35, via the crown 31, to the outer ring 3 and more generally to the frame 1.
  • An electric motor located near the wheels and supplied by cables passing through the internal bore 14 of the hub 11, allows the wheels to rotate about their axis to make advance the vehicle.
  • the output shaft 35 is not necessarily present.
  • a part to be rotated, other than a shaft can be coupled directly to the inner ring 31.
  • the concentric surface portions 20, 21 and eccentric 22, the pinion 27, the ring gear 6, the rings 23, 24, the pins 36 and the bearings 25, 26, 29 constitute a cycloidal speed reducer whose operation is , in itself, of known type.
  • the concentric surface portions 20, 21 and eccentric 22, in particular the eccentric portion 22, are defined by an electric motor rotor and not by a traditional connected gear shaft. outside the gearbox to a motor.
  • the motor and the speed reducer are integrated in one and the same device, the speed reducer surrounding the rotor and the stator of the motor, and the rotor of the motor has two different functions, namely produce a rotation in cooperation with the stator and print on the speed reducer gear a combined movement of rotation and gyration.
  • the overall axial dimension of the motor-speed reducer assembly is thus significantly reduced.
  • the radial size is not or is slightly increased compared to a traditional speed reducer.
  • the body 17 of the rotor 16 could consist of several pieces rigidly joined to each other.
  • the frame 1 could be monoblock, in other words the support plate 2, the intermediate ring 4, the outer ring 3, the ring gear 6 and the upper frame portion 7 could form a single room.
  • the invention does not exclude the use of other means allowing the rings 23, 24 and pinion 27 to rotate relative to the rotor 16 and to the inner ring 31 to rotate relative to the outer ring 3, for example sliding rings.
  • a torque generating device comprises a frame 40 made up of parts rigidly connected to one another, namely an annular plate of support 41, an outer ring 42 and an upper ring 43 clamped between the lower face of the support plate 41 and the upper face of the outer ring 42 by nut bolts 44.
  • Other means of assembly than the bolts to Nuts 44 could of course be used to assemble parts 41 to 43.
  • the parts 41 to 43 forming the frame 40 are concentric about an imaginary axis designated in FIG. 2 by the mark 45.
  • a part 46 concentric with the axis 45 defines a central cylindrical portion 47, or hub, extending along the axis 45 inside the frame 40, and an upper plate 48 extending in a plane transverse to the axis 45, at the upper end of the hub 47.
  • the plate 48 is fixed at its level. peripheral part, for example by means of screws 49, at a projecting portion of the upper face of the upper ring 43.
  • the part 46, with its hub 47 and its upper plate 48, is thus rigidly connected to the frame 40.
  • the piece 46 has a central axial through bore 50 allowing for example the passage of electric cables.
  • the hub 47 is rigidly fixed an internal stator of electric motor 51 which cooperates with an external rotor of electric motor 52.
  • the stator 51 and the rotor 52 are identical to those described in relation to the first embodiment.
  • the outer face of the body 53 of the rotor 52 has an upper portion 54 and a lower portion 55 concentric with the axis 45 and a central portion 56 eccentric with respect to the axis 45.
  • the concentric upper portion 54 is separated from the inner face of the upper ring 43 by a first bearing 57.
  • the eccentric middle portion 56 cooperates with the inner face of a pinion 58 via a second bearing 59.
  • the pinion 58 comprises an external toothing 60 which meshes with an internal toothing of an inner ring 61 but which has one tooth less than this internal toothing.
  • the outer face of the inner ring 61 cooperates with the inner face of the outer ring 42 by means of a third bearing 62.
  • a lower ring 63 is fixed rigidly against the underside of the inner ring. 61, and the inner face of this lower ring 63 cooperates, via a fourth bearing 64, with the concentric lower portion 55 of the outer face of the rotor body 53.
  • Pins 65 are rigidly fixed in the upper ring 43 and pass through bores in the gear 58, bores which have a larger section than the pins 65.
  • An output shaft or drive 66 concentric with the axis 45 is fixed by an upper flange 67 against the underside of the lower ring 63.
  • the assembly of the inner ring 61, the lower ring 63 and the output shaft 66 is performed for example, as shown, by means of screws 68 which clamp the lower ring 63 between the inner ring 61 and the flange 67 of the shaft 66.
  • the movable assembly 52, 58, 61, 63 is held assembled and fixed axially relative to the frame 40 in particular by shoulders provided on the outer face of the rotor body 53 and r the rings 43, 63, by the screws 68 and by the bearing 62.
  • the torque producing device operates in the following manner.
  • Each gyration of the pinion 58 rotates the inner ring 61 one step of its teeth, relative to the frame 40, also driving the lower ring 63 and the output shaft 66 integral with the inner ring 61.
  • the reducer of the speed constituted by the outer face of the rotor 52, the pinion 58, the inner ring 61 and the pins 65 is a cycloidal reducer operating in a manner which, in itself, is known.
  • a significant advantage in terms of space is conferred by the fact that the surface parts concentric members 54, 55 and eccentric 56, in particular the eccentric portion 56, are defined by an electric motor rotor and not by a conventional gear shaft.
  • the torque generating device according to this second embodiment has, compared to that according to the first embodiment, the advantage of being even more compact in the axial direction.
  • the body 53 of the rotor 52 could consist of several pieces rigidly joined to each other.
  • the frame 40 could be in one piece, in other words the support plate 41, the upper ring 43 and the outer ring 42 could form a single piece.
  • the invention does not exclude the use of other means allowing the rings 43, 63 and the pinion 58 to rotate relative to the rotor 52 and to the inner ring 61 to rotate relative to the outer ring 42, for example sliding rings.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Retarders (AREA)

Abstract

The present invention relates to a device for producing torque, in particular an orientation device, including an electric motor (15, 16), a speed reducer (6, 16, 23-27, 29, 36), and a rotational output member (35) coupled to the speed reducer, the speed reducer including a rotational input member (16) rotating at the rotational speed of the motor and means (23-27, 29, 36) engaging with the rotational input member (16) so as to rotate the rotational output member (35) at a speed less than the rotational speed of the motor. The invention is characterized in that the electric motor includes a stator (15) and a rotor (16) surrounding the stator (15), and in that the rotor (16) constitutes the rotational input member of the speed reducer.

Description

Dispositif de production de couple, notamment dispositif d'orientation Device for producing torque, in particular an orientation device
La présente invention concerne un dispositif de production de couple, plus particulièrement un dispositif comprenant un moteur électrique et un réducteur de vitesse.The present invention relates to a torque generating device, more particularly to a device comprising an electric motor and a speed reducer.
Il est connu que les moteurs électriques tournent à des vitesses qui sont souvent bien plus élevées que les vitesses d'entrée requises des mécanismes qu'ils commandent. Pour remédier à ce problème on a recours à des réducteurs de vitesse, que l'on interpose entre le moteur et le mécanisme à entraîner. Un réducteur de vitesse comprend ainsi, généralement, un arbre d'entrée qui tourne à la vitesse de rotation du moteur, un arbre de sortie et, entre les deux, des organes de réduction de vitesse qui permettent à l'arbre de sortie de tourner à une vitesse inférieure à celle du moteur. Dans un type connu de réducteur de vitesse, dit réducteur cycloïdal ou trochoïdal, l'arbre d'entrée présente une face périphérique excentrique avec laquelle les organes de réduction de vitesse coopèrent. Des exemples de réducteur de vitesse cycloïdal sont décrits dans les brevets US 4 194415, US 4 526 064 et EP 0 291 052.It is known that electric motors run at speeds that are often much higher than the required input speeds of the mechanisms they control. To remedy this problem, speed reducers are used which are interposed between the motor and the mechanism to be driven. A speed reducer thus generally comprises an input shaft which rotates at the rotational speed of the motor, an output shaft and, in between, speed reducing members which enable the output shaft to rotate. at a lower speed than the engine. In a known type of speed reducer, called cycloidal or trochoidal reducer, the input shaft has an eccentric peripheral face with which the speed reduction members cooperate. Examples of cycloidal speed reducers are described in US Pat. No. 4,194,415, US Pat. No. 4,526,064 and EP 0 291 052.
Un inconvénient des réducteurs de vitesse est qu'en s'interposant entre le moteur et le mécanisme à commander, ils augmentent l'encombrement global, en particulier l'encombrement axial. La présente invention vise à proposer un dispositif de production de couple à encombrement axial réduit.A disadvantage of speed reducers is that by interposing between the motor and the mechanism to be controlled, they increase the overall size, in particular the axial size. The present invention aims at providing a device for producing torque with reduced axial dimensions.
A cette fin, il est prévu selon l'invention un dispositif de production de couple comprenant un moteur électrique, un réducteur de vitesse et un organe rotatif de sortie accouplé au réducteur de vitesse, le réducteur de vitesse comprenant un organe rotatif d'entrée tournant à la vitesse de rotation du moteur et des moyens coopérant avec l'organe rotatif d'entrée pour faire tourner l'organe rotatif de sortie à une vitesse inférieure à la vitesse de rotation du moteur, caractérisé en ce que le moteur électrique comprend un stator et un rotor entourant le stator et en ce que le rotor constitue ledit organe rotatif d'entrée du réducteur de vitesse.To this end, there is provided according to the invention a torque generating device comprising an electric motor, a speed reducer and a rotational output member coupled to the speed reducer, the speed reducer comprising a rotatable rotating input member. at the speed of rotation of the motor and means cooperating with the rotary input member for rotating the output rotary member at a speed lower than the rotational speed of the engine, characterized in that the electric motor comprises a stator and a rotor surrounding the stator and in that the rotor constitutes said rotational input member of the speed reducer.
Des modes de réalisation particuliers de l'invention sont définis dans les revendications dépendantes annexées 2 à 7.Particular embodiments of the invention are defined in the appended dependent claims 2-7.
D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée suivante faite en référence aux dessins annexés dans lesquels :Other features and advantages of the present invention will appear on reading the following detailed description given with reference to the accompanying drawings in which:
- la figure 1 est une vue en coupe axiale d'un dispositif de production de couple selon un premier mode de réalisation de l'invention ; et- Figure 1 is an axial sectional view of a torque generating device according to a first embodiment of the invention; and
- la figure 2 est une vue en coupe axiale d'un dispositif de production de couple selon un second mode de réalisation de l'invention.- Figure 2 is an axial sectional view of a torque generating device according to a second embodiment of the invention.
Dans toute la description qui suit, les termes « inférieur » et « supérieur » seront employés en référence au dispositif de production de couple tel qu'il apparaît sur les figures 1 et 2, c'est-à-dire orienté de haut en bas. En pratique, le dispositif selon l'invention pourra être utilisé dans d'autres positions que celle représentée.Throughout the following description, the terms "lower" and "upper" will be used with reference to the torque producing device as it appears in FIGS. 1 and 2, that is to say oriented from top to bottom. . In practice, the device according to the invention may be used in positions other than that shown.
Comme montré à la figure 1 , un dispositif de production de couple selon un premier mode de réalisation de l'invention comprend un bâti 1 constitué de plusieurs pièces assemblées rigidement les unes aux autres. Le bâti 1 comprend plus précisément une plaque annulaire de support 2, une couronne extérieure 3, une bague intermédiaire 4 maintenue entre la face inférieure de la plaque de support 2 et la face supérieure de la couronne extérieure 3 par des vis de serrage 5 ou tout autre moyen d'assemblage approprié, une couronne d'engrènement 6 montée dans l'alésage central de la plaque annulaire 1 et s'appuyant sur la face supérieure de la bague intermédiaire 4 et une partie supérieure annulaire 7 s'appuyant sur la face supérieure de la couronne d'engrènement 6, l'ensemble 4, 6, 7 étant maintenu par des vis de serrage 8 ou tout autre moyen d'assemblage approprié. Les pièces 2, 3, 4, 6, 7 formant le bâti 1 sont concentriques autour d'un axe imaginaire désigné à la figure 1 par le repère 9. Une pièce 10 concentrique avec l'axe 9 définit une partie centrale cylindrique 11 , ou moyeu, s'étendant le long de l'axe 9 à l'intérieur du bâti 1 , et un plateau supérieur 12 s'étendant dans un plan transversal à l'axe 9, à l'extrémité supérieure du moyeu 11. Le plateau 12 est fixé au niveau de sa partie périphérique 13, par exemple par des vis (non visibles sur la figure 1), à une face annulaire supérieure de la partie de bâti supérieure 7. La pièce 10, avec son moyeu 11 et son plateau supérieur 12, est ainsi fixée rigidement au bâti 1. La pièce 10 comporte un alésage axial central traversant 14 permettant par exemple le passage de câbles électriques.As shown in Figure 1, a torque generating device according to a first embodiment of the invention comprises a frame 1 consisting of several parts rigidly joined to each other. The frame 1 more specifically comprises an annular support plate 2, an outer ring 3, an intermediate ring 4 held between the lower face of the support plate 2 and the upper face of the outer ring 3 by clamping screws 5 or any another suitable means of assembly, a meshing ring 6 mounted in the central bore of the annular plate 1 and bearing on the upper face of the intermediate ring 4 and an annular upper portion 7 resting on the upper face of the meshing ring 6, the assembly 4, 6, 7 being held by clamping screws 8 or any other suitable means of assembly. The parts 2, 3, 4, 6, 7 forming the frame 1 are concentric about an imaginary axis designated in FIG. 1 by reference numeral 9. A part 10 concentric with the axis 9 defines a cylindrical central part 11, or hub, extending along the axis 9 inside the frame 1, and an upper plate 12 extending in a plane transverse to the axis 9 at the upper end of the hub 11. The plate 12 is fixed at its peripheral portion 13, for example by screws (not visible in Figure 1), an upper annular face of the upper frame portion 7. The part 10, with its hub 11 and its upper plate 12 is rigidly fixed to the frame 1. The part 10 has a central axial through bore 14 allowing for example the passage of electric cables.
Autour du moyeu 11 est fixé rigidement un stator de moteur électrique 15. Le stator 15 comprend typiquement, de manière bien connue en soi, un empilement de tôles conductrices reliées entre elles par des câbles électriques. Le stator 15 est entouré par un rotor de moteur électrique 16, comprenant un corps 17 et des aimants permanents 18 fixés sur la face interne cylindrique 19 du corps 17, située en regard du stator 15. Le moteur formé par le stator 15 et le rotor 16 fonctionne comme un moteur électrique traditionnel, c'est-à-dire que l'alimentation du stator 15 en courant électrique entraîne une rotation du rotor 16 autour de l'axe 9 sans contact entre le stator 15 et le rotor 16. Toutefois, à la différence des moteurs électriques traditionnels, le stator 15 est ici situé à l'intérieur et le rotor 16 à l'extérieur.Around the hub 11 is fixed rigidly an electric motor stator 15. The stator 15 typically comprises, in a manner well known per se, a stack of conductive sheets interconnected by electric cables. The stator 15 is surrounded by an electric motor rotor 16, comprising a body 17 and permanent magnets 18 fixed on the cylindrical internal face 19 of the body 17, opposite the stator 15. The motor formed by the stator 15 and the rotor 16 operates as a conventional electric motor, that is to say that the supply of the stator 15 electric current causes a rotation of the rotor 16 about the axis 9 without contact between the stator 15 and the rotor 16. However, unlike traditional electric motors, the stator 15 is here located inside and the rotor 16 outside.
Le stator 15 et la face intérieure 19 du corps de rotor 17, qui porte les aimants 18, sont concentriques avec l'axe 9. La face extérieure du corps de rotor 17 comprend une partie supérieure cylindrique 20 et une partie inférieure cylindrique 21 qui sont concentriques avec l'axe 9 et une partie médiane cylindrique 22, de plus grand diamètre que les parties 20 et 21 , qui est excentrique par rapport à l'axe 9. L'excentricité de la partie médiane 22 étant faible, elle est peu visible sur la figure 1. Une bague supérieure 23 et une bague inférieure 24 coopèrent par leur face intérieure respectivement avec les parties supérieure 20 et inférieure 21 de la face extérieure du corps de rotor 17 par l'intermédiaire de premier et second roulements respectifs 25, 26. Un pignon annulaire 27 comportant une denture extérieure 28 coopère par sa face intérieure avec la partie médiane excentrique 22 de la face extérieure du corps de rotor 17 par l'intermédiaire d'un troisième roulement 29. La denture extérieure 28 du pignon 27 engrène avec une denture intérieure de la couronne d'engrènement 6 mais a une dent de moins que cette denture intérieure. La face extérieure de la bague supérieure 23 coopère avec la face intérieure de la partie de bâti supérieure 7 par l'intermédiaire d'un quatrième roulement 30. Une couronne intérieure 31 concentrique avec l'axe 9 coopère par sa face extérieure avec la face intérieure de la couronne extérieure 3 par l'intermédiaire d'un cinquième roulement 32. Les roulements 25, 26, 29, 30 et 32 sont par exemple des roulements à billes ou à rouleaux. La couronne intérieure 31 est fixée rigidement contre la face inférieure de la bague inférieure 24. Plus précisément, la couronne intérieure 31 est maintenue par des vis de serrage 33 ou tout autre moyen d'assemblage approprié entre la face inférieure de la bague inférieure 24 et la face supérieure d'un rebord supérieur 34 d'un arbre dit de sortie ou d'entraînement 35 concentrique avec l'axe 9. Les bagues supérieure et inférieure 23, 24 sont fixées rigidement l'une à l'autre par des goupilles 36 qui traversent des alésages du pignon 27 ayant une plus grande section que les goupilles 36. L'ensemble rotatif 16, 23-29, 31 est maintenu assemblé et fixe axialement par rapport au bâti 1 notamment par des épaulements ménagés sur la face externe du corps de rotor 17 et sur les bagues 23, 24, par le roulement 30 en appui contre le plateau 12 et le bâti 1 , par le roulement 32 et par les vis 33.The stator 15 and the inner face 19 of the rotor body 17, which carries the magnets 18, are concentric with the axis 9. The outer face of the rotor body 17 comprises a cylindrical upper portion 20 and a cylindrical lower portion 21 which are concentric with the axis 9 and a cylindrical central portion 22, larger in diameter than the parts 20 and 21, which is eccentric with respect to the axis 9. The eccentricity of the middle portion 22 is low, it is inconspicuous in Figure 1. An upper ring 23 and a lower ring 24 cooperate by their inner face respectively with the upper and lower portions 21 of the outer face of the rotor body 17 by means of respective first and second bearings 25, 26. An annular gear 27 having an external toothing 28 cooperates on its inner face with the eccentric middle part 22 of the outer face of the rotor body 17 by means of a third bearing 29. The external toothing 28 of the pinion 27 meshes with an internal toothing of the 6 meshing crown but has one tooth less than this internal toothing. The outer face of the upper ring 23 cooperates with the inner face of the upper frame part 7 by means of a fourth bearing 30. An inner ring 31 concentric with the axis 9 cooperates on its outside with the inner face. the outer ring 3 via a fifth bearing 32. The bearings 25, 26, 29, 30 and 32 are for example ball or roller bearings. The inner ring 31 is fixed rigidly against the lower face of the lower ring 24. More specifically, the inner ring 31 is held by clamping screws 33 or any other suitable means of assembly between the lower face of the lower ring 24 and the upper face of an upper rim 34 of an output shaft or drive shaft 35 concentric with the axis 9. The upper and lower rings 23, 24 are fixed rigidly to one another by pins 36 which pass through bores of the pinion 27 having a greater section than the pins 36. The rotary assembly 16, 23-29, 31 is held assembled and fixed axially relative to the frame 1 in particular by shoulders provided on the outer face of the body rotor 17 and on the rings 23, 24, by the bearing 30 bearing against the plate 12 and the frame 1, by the bearing 32 and by the screws 33.
Le dispositif de production de couple illustré à la figure 1 fonctionne de la manière suivante. Lorsque le rotor 16 est entraîné en rotation autour de l'axe 9 par rapport au bâti 1 , la rotation de la partie excentrique 22 et l'engrènement entre le pignon 27 et la couronne d'engrènement 6 font effectuer au pignon 27 un mouvement de rotation autour de l'axe 9 combiné à un mouvement de giration. Le mouvement de rotation du pignon 27 s'effectue à une vitesse inférieure, et même très inférieure, à la vitesse de rotation du rotor 16. Ce mouvement de rotation est communiqué aux bagues supérieure et inférieure 23, 24 par les goupilles 36 qui peuvent se mouvoir dans les alésages correspondants du pignon 27. La couronne intérieure 31 et l'arbre de sortie 35 sont solidaires des bagues 23, 24 et tournent donc concentriquement autour de l'axe 9, par rapport au bâti 1 , à une vitesse très inférieure à celle du rotor 16. Un couple élevé peut ainsi être produit avec un moteur de petite taille. Pendant son mouvement de rotation, l'ensemble rotatif constitué par les bagues supérieure et inférieure 23, 24, le pignon 27 et la couronne intérieure 31 est guidé par les roulements 30 et 32.The torque producing device illustrated in FIG. 1 operates in the following manner. When the rotor 16 is rotated about the axis 9 relative to the frame 1, the rotation of the eccentric portion 22 and the meshing between the pinion 27 and the meshing ring 6 make the pinion 27 a rotational movement around the axis 9 combined with a gyration movement. The rotational movement of the pinion 27 is performed at a lower speed, and even much lower, at the speed of rotation of the rotor 16. This rotational movement is communicated to the upper and lower rings 23, 24 by the pins 36 which can move in the corresponding bores of the pinion 27. The inner ring 31 and the output shaft 35 are integral with the rings 23, 24 and therefore rotate concentrically around the axis 9, relative to the frame 1, at a speed much lower than that of the rotor 16. A high torque can thus be produced with a small engine. During its rotational movement, the rotary assembly constituted by the upper and lower rings 23, 24, the pinion 27 and the inner ring 31 is guided by the bearings 30 and 32.
Dans une application particulière de l'invention, l'arbre de sortie 35 est connecté à son extrémité inférieure (non représentée) à un ensemble de roues d'un véhicule, tel qu'un véhicule de manutention, un autobus, un avion, etc., pour former un train-roue orientable par le dispositif selon l'invention. Dans cette application, le dispositif selon l'invention a non seulement une fonction d'orientation des roues mais également une fonction de reprise des efforts exercés par le sol, ces efforts étant en effet transmis par l'arbre de sortie 35, via la couronne intérieure 31 , à la couronne extérieure 3 et plus généralement au bâti 1. Un moteur électrique situé à proximité des roues et alimenté par des câbles traversant l'alésage interne 14 du moyeu 11 , permet de faire tourner les roues autour de leur axe pour faire avancer le véhicule. D'autres applications que l'orientation d'un train-roue peuvent être envisagées pour le dispositif selon l'invention, par exemple l'orientation d'une grue, d'une tourelle, d'une antenne de communication, de pales d'une éolienne, la rotation d'un treuil, etc. On notera que l'arbre de sortie 35 n'est pas nécessairement présent. Dans certaines applications en effet, une pièce à faire tourner, autre qu'un arbre, pourra être accouplée directement à la couronne intérieure 31. Les parties de surface concentriques 20, 21 et excentrique 22, le pignon 27, la couronne d'engrènement 6, les bagues 23, 24, les goupilles 36 et les roulements 25, 26, 29 constituent un réducteur de vitesse cycloïdal dont le fonctionnement est, en soi, de type connu. Un avantage important de l'invention est conféré par le fait que les parties de surface concentriques 20, 21 et excentrique 22, en particulier la partie excentrique 22, sont définies par un rotor de moteur électrique et non pas par un arbre de réducteur traditionnel connecté à l'extérieur du réducteur à un moteur. Par cette caractéristique de l'invention, en effet, le moteur et le réducteur de vitesse sont intégrés dans un même dispositif, le réducteur de vitesse entourant le rotor et le stator du moteur, et le rotor du moteur exerce deux fonctions différentes, à savoir produire une rotation en coopération avec le stator et imprimer au pignon de réducteur de vitesse un mouvement combiné de rotation et de giration. L'encombrement axial global de l'ensemble moteur - réducteur de vitesse est ainsi réduit de manière significative. L'encombrement radial n'est pas ou est peu augmenté par rapport à un réducteur de vitesse traditionnel.In a particular application of the invention, the output shaft 35 is connected at its lower end (not shown) to a set of wheels of a vehicle, such as a handling vehicle, a bus, a plane, etc. to form a steerable wheel train by the device according to the invention. In this application, the device according to the invention not only has a function of orientation of the wheels but also a function of recovery of the forces exerted by the ground, these forces being in fact transmitted by the output shaft 35, via the crown 31, to the outer ring 3 and more generally to the frame 1. An electric motor located near the wheels and supplied by cables passing through the internal bore 14 of the hub 11, allows the wheels to rotate about their axis to make advance the vehicle. Other applications than the orientation of a wheel-train can be envisaged for the device according to the invention, for example the orientation of a crane, a turret, a communication antenna, blades of a wind turbine, the rotation of a winch, etc. Note that the output shaft 35 is not necessarily present. In some applications, in fact, a part to be rotated, other than a shaft, can be coupled directly to the inner ring 31. The concentric surface portions 20, 21 and eccentric 22, the pinion 27, the ring gear 6, the rings 23, 24, the pins 36 and the bearings 25, 26, 29 constitute a cycloidal speed reducer whose operation is , in itself, of known type. An important advantage of the invention is conferred by the fact that the concentric surface portions 20, 21 and eccentric 22, in particular the eccentric portion 22, are defined by an electric motor rotor and not by a traditional connected gear shaft. outside the gearbox to a motor. By this characteristic of the invention, in fact, the motor and the speed reducer are integrated in one and the same device, the speed reducer surrounding the rotor and the stator of the motor, and the rotor of the motor has two different functions, namely produce a rotation in cooperation with the stator and print on the speed reducer gear a combined movement of rotation and gyration. The overall axial dimension of the motor-speed reducer assembly is thus significantly reduced. The radial size is not or is slightly increased compared to a traditional speed reducer.
Bien qu'en une seule pièce dans l'exemple illustré à la figure 1 , le corps 17 du rotor 16 pourrait être constitué de plusieurs pièces assemblées rigidement les unes aux autres. A l'inverse, le bâti 1 pourrait être monobloc, en d'autres termes la plaque de support 2, la bague intermédiaire 4, la couronne extérieure 3, la couronne d'engrènement 6 et la partie de bâti supérieure 7 pourraient former une seule pièce. Par ailleurs, bien que l'utilisation de roulements soit préférable, l'invention n'exclut pas d'employer d'autres moyens permettant aux bagues 23, 24 et au pignon 27 de tourner par rapport au rotor 16 et à la couronne intérieure 31 de tourner par rapport à la couronne extérieure 3, par exemple des bagues de glissement.Although in one piece in the example illustrated in Figure 1, the body 17 of the rotor 16 could consist of several pieces rigidly joined to each other. Conversely, the frame 1 could be monoblock, in other words the support plate 2, the intermediate ring 4, the outer ring 3, the ring gear 6 and the upper frame portion 7 could form a single room. Furthermore, although the use of bearings is preferable, the invention does not exclude the use of other means allowing the rings 23, 24 and pinion 27 to rotate relative to the rotor 16 and to the inner ring 31 to rotate relative to the outer ring 3, for example sliding rings.
En référence à la figure 2, un dispositif de production de couple selon un second mode de réalisation de l'invention comprend un bâti 40 constitué de pièces assemblées rigidement les unes aux autres, à savoir une plaque annulaire de support 41, une couronne extérieure 42 et une bague supérieure 43 serrée entre la face inférieure de la plaque de support 41 et la face supérieure de la couronne extérieure 42 par des boulons à écrou 44. D'autres moyens d'assemblage que les boulons à écrous 44 pourraient bien entendu être utilisés pour assembler les pièces 41 à 43.With reference to FIG. 2, a torque generating device according to a second embodiment of the invention comprises a frame 40 made up of parts rigidly connected to one another, namely an annular plate of support 41, an outer ring 42 and an upper ring 43 clamped between the lower face of the support plate 41 and the upper face of the outer ring 42 by nut bolts 44. Other means of assembly than the bolts to Nuts 44 could of course be used to assemble parts 41 to 43.
Les pièces 41 à 43 formant le bâti 40 sont concentriques autour d'un axe imaginaire désigné à la figure 2 par le repère 45. Une pièce 46 concentrique avec l'axe 45 définit une partie centrale cylindrique 47, ou moyeu, s'étendant le long de l'axe 45 à l'intérieur du bâti 40, et un plateau supérieur 48 s'étendant dans un plan transversal à l'axe 45, à l'extrémité supérieure du moyeu 47. Le plateau 48 est fixé au niveau de sa partie périphérique, par exemple au moyen de vis 49, à une partie saillante de la face supérieure de la bague supérieure 43. La pièce 46, avec son moyeu 47 et son plateau supérieur 48, est ainsi liée rigidement au bâti 40. La pièce 46 comporte un alésage axial central traversant 50 permettant par exemple le passage de câbles électriques.The parts 41 to 43 forming the frame 40 are concentric about an imaginary axis designated in FIG. 2 by the mark 45. A part 46 concentric with the axis 45 defines a central cylindrical portion 47, or hub, extending along the axis 45 inside the frame 40, and an upper plate 48 extending in a plane transverse to the axis 45, at the upper end of the hub 47. The plate 48 is fixed at its level. peripheral part, for example by means of screws 49, at a projecting portion of the upper face of the upper ring 43. The part 46, with its hub 47 and its upper plate 48, is thus rigidly connected to the frame 40. The piece 46 has a central axial through bore 50 allowing for example the passage of electric cables.
Autour du moyeu 47 est fixé rigidement un stator interne de moteur électrique 51 qui coopère avec un rotor externe de moteur électrique 52. Le stator 51 et le rotor 52 sont identiques à ceux décrits en relation avec le premier mode de réalisation. En particulier, la face extérieure du corps 53 du rotor 52 comporte une partie supérieure 54 et une partie inférieure 55 concentriques avec l'axe 45 et une partie médiane 56 excentrique par rapport à l'axe 45. La partie supérieure concentrique 54 est séparée de la face intérieure de la bague supérieure 43 par un premier roulement 57. La partie médiane excentrique 56 coopère avec la face intérieure d'un pignon 58 par l'intermédiaire d'un second roulement 59. Le pignon 58 comprend une denture externe 60 qui engrène avec une denture interne d'une couronne intérieure 61 mais qui a une dent de moins que cette denture interne. La face externe de la couronne intérieure 61 coopère avec la face interne de la couronne extérieure 42 par l'intermédiaire d'un troisième roulement 62. Une bague inférieure 63 est fixée rigidement contre la face inférieure de la couronne intérieure 61 , et la face intérieure de cette bague inférieure 63 coopère, par l'intermédiaire d'un quatrième roulement 64, avec la partie inférieure concentrique 55 de la face extérieure du corps de rotor 53.Around the hub 47 is rigidly fixed an internal stator of electric motor 51 which cooperates with an external rotor of electric motor 52. The stator 51 and the rotor 52 are identical to those described in relation to the first embodiment. In particular, the outer face of the body 53 of the rotor 52 has an upper portion 54 and a lower portion 55 concentric with the axis 45 and a central portion 56 eccentric with respect to the axis 45. The concentric upper portion 54 is separated from the inner face of the upper ring 43 by a first bearing 57. The eccentric middle portion 56 cooperates with the inner face of a pinion 58 via a second bearing 59. The pinion 58 comprises an external toothing 60 which meshes with an internal toothing of an inner ring 61 but which has one tooth less than this internal toothing. The outer face of the inner ring 61 cooperates with the inner face of the outer ring 42 by means of a third bearing 62. A lower ring 63 is fixed rigidly against the underside of the inner ring. 61, and the inner face of this lower ring 63 cooperates, via a fourth bearing 64, with the concentric lower portion 55 of the outer face of the rotor body 53.
Des goupilles 65 sont fixées rigidement dans la bague supérieure 43 et traversent des alésages pratiqués dans le pignon 58, alésages qui ont une plus grande section que les goupilles 65. Un arbre de sortie ou d'entraînement 66 concentrique avec l'axe 45 est fixé par un rebord supérieur 67 contre la face inférieure de la bague inférieure 63. L'assemblage de la couronne intérieure 61 , de la bague inférieure 63 et de l'arbre de sortie 66 s'effectue par exemple, comme représenté, au moyen de vis de serrage 68 qui serrent la bague inférieure 63 entre la couronne intérieure 61 et le rebord 67 de l'arbre 66. Une plaque 69 fixée contre la face inférieure de la bague inférieure 63, dans un alésage central de l'arbre 66, protège l'intérieur du réducteur de vitesse et centre le stator 47. L'ensemble mobile 52, 58, 61 , 63 est maintenu assemblé et fixe axialement par rapport au bâti 40 notamment par des épaulements ménagés sur la face externe du corps de rotor 53 et sur les bagues 43, 63, par les vis 68 et par le roulement 62.Pins 65 are rigidly fixed in the upper ring 43 and pass through bores in the gear 58, bores which have a larger section than the pins 65. An output shaft or drive 66 concentric with the axis 45 is fixed by an upper flange 67 against the underside of the lower ring 63. The assembly of the inner ring 61, the lower ring 63 and the output shaft 66 is performed for example, as shown, by means of screws 68 which clamp the lower ring 63 between the inner ring 61 and the flange 67 of the shaft 66. A plate 69 fixed against the underside of the lower ring 63, in a central bore of the shaft 66, protects the inside of the speed reducer and center the stator 47. The movable assembly 52, 58, 61, 63 is held assembled and fixed axially relative to the frame 40 in particular by shoulders provided on the outer face of the rotor body 53 and r the rings 43, 63, by the screws 68 and by the bearing 62.
Le dispositif de production de couple selon ce second mode de réalisation fonctionne de la manière suivante. Lorsque le rotor 52 est entraîné en rotation autour de l'axe 45 par rapport au bâti 40, la rotation de la partie excentrique 56, l'engrènement entre le pignon 58 et la couronne intérieure 61 et la coopération entre le pignon 58 et les goupilles 65, qui retiennent le pignon 58 en rotation, font effectuer au pignon 58 des mouvements de giration. Chaque mouvement de giration du pignon 58 fait tourner la couronne intérieure 61 d'un pas de sa denture, par rapport au bâti 40, entraînant également la bague inférieure 63 et l'arbre de sortie 66 solidaires de la couronne intérieure 61. Le réducteur de vitesse constitué par la face externe du rotor 52, le pignon 58, la couronne intérieure 61 et les goupilles 65 est un réducteur cycloïdal fonctionnant d'une manière qui, en soi, est connue. Comme dans le premier mode de réalisation, un avantage important en terme d'encombrement est conféré par le fait que les parties de surface concentriques 54, 55 et excentrique 56, en particulier la partie excentrique 56, sont définies par un rotor de moteur électrique et non pas par un arbre de réducteur traditionnel. Le dispositif de production de couple selon ce second mode de réalisation présente par rapport à celui selon le premier mode de réalisation l'avantage d'être encore plus compact dans la direction axiale.The torque producing device according to this second embodiment operates in the following manner. When the rotor 52 is rotated about the axis 45 relative to the frame 40, the rotation of the eccentric portion 56, the meshing between the pinion 58 and the inner ring 61 and the cooperation between the pinion 58 and the pins 65, which hold the pinion 58 in rotation, make the pinion 58 gyration movements. Each gyration of the pinion 58 rotates the inner ring 61 one step of its teeth, relative to the frame 40, also driving the lower ring 63 and the output shaft 66 integral with the inner ring 61. The reducer of the speed constituted by the outer face of the rotor 52, the pinion 58, the inner ring 61 and the pins 65 is a cycloidal reducer operating in a manner which, in itself, is known. As in the first embodiment, a significant advantage in terms of space is conferred by the fact that the surface parts concentric members 54, 55 and eccentric 56, in particular the eccentric portion 56, are defined by an electric motor rotor and not by a conventional gear shaft. The torque generating device according to this second embodiment has, compared to that according to the first embodiment, the advantage of being even more compact in the axial direction.
Bien qu'en une seule pièce dans l'exemple illustré à la figure 2, le corps 53 du rotor 52 pourrait être constitué de plusieurs pièces assemblées rigidement les unes aux autres. A l'inverse, le bâti 40 pourrait être monobloc, en d'autres termes la plaque de support 41 , la bague supérieure 43 et la couronne extérieure 42 pourraient former une seule pièce. Par ailleurs, bien que l'utilisation de roulements soit préférable, l'invention n'exclut pas d'employer d'autres moyens permettant aux bagues 43, 63 et au pignon 58 de tourner par rapport au rotor 52 et à la couronne intérieure 61 de tourner par rapport à la couronne extérieure 42, par exemple des bagues de glissement. Although in one piece in the example shown in Figure 2, the body 53 of the rotor 52 could consist of several pieces rigidly joined to each other. Conversely, the frame 40 could be in one piece, in other words the support plate 41, the upper ring 43 and the outer ring 42 could form a single piece. Moreover, although the use of bearings is preferable, the invention does not exclude the use of other means allowing the rings 43, 63 and the pinion 58 to rotate relative to the rotor 52 and to the inner ring 61 to rotate relative to the outer ring 42, for example sliding rings.

Claims

REVENDICATIONS
1. Dispositif de production de couple comprenant un moteur électrique (15, 16), un réducteur de vitesse (6, 16, 23-27, 29, 36) et un organe rotatif de sortie (35) accouplé au réducteur de vitesse, le réducteur de vitesse comprenant un organe rotatif d'entrée (16) tournant à la vitesse de rotation du moteur et des moyens (23-27, 29, 36) coopérant avec l'organe rotatif d'entrée (16) pour faire tourner l'organe rotatif de sortie (35) à une vitesse inférieure à la vitesse de rotation du moteur, caractérisé en ce que le moteur électrique comprend un stator (15) et un rotor (16) entourant le stator (15) et en ce que le rotor (16) constitue ledit organe rotatif d'entrée du réducteur de vitesse.A torque generating device comprising an electric motor (15, 16), a speed reducer (6, 16, 23-27, 29, 36) and a rotary output member (35) coupled to the speed reducer, the speed reducer comprising an input rotational member (16) rotating at the rotational speed of the motor and means (23-27, 29, 36) cooperating with the rotary input member (16) for rotating the rotary output member (35) at a speed lower than the rotational speed of the motor, characterized in that the electric motor comprises a stator (15) and a rotor (16) surrounding the stator (15) and that the rotor (16) constitutes said rotational input member of the speed reducer.
2. Dispositif selon la revendication 1 , caractérisé en ce que l'organe rotatif de sortie (35) est solidaire d'une couronne intérieure (31) montée mobile en rotation relative dans une couronne extérieure (3) faisant partie d'un bâti (1) du dispositif.2. Device according to claim 1, characterized in that the rotary output member (35) is integral with an inner ring (31) mounted to rotate relatively in an outer ring (3) forming part of a frame ( 1) of the device.
3. Dispositif selon la revendication 2, caractérisé en ce que la couronne intérieure (31) coopère avec la couronne extérieure (3) par l'intermédiaire d'un roulement (32).3. Device according to claim 2, characterized in that the inner ring (31) cooperates with the outer ring (3) by means of a bearing (32).
4. Dispositif selon la revendication 2 ou 3, caractérisé en ce que la face extérieure du rotor (16) comprend des première et seconde parties (20, 21) concentriques avec l'axe (9) du moteur et une partie excentrique (22) située entre les première et seconde parties concentriques (20, 21), en ce que lesdits moyens comprennent un pignon (27) monté mobile en rotation relative autour de la partie excentrique (22), une troisième couronne (6) faisant partie du bâti (1), entourant le pignon (27) et engrenant avec ce dernier, des première et seconde bagues (23, 24) situées de part et d'autre du pignon (27) et montées mobiles en rotation relative autour des première et seconde parties concentriques (20, 21) respectivement et des goupilles (36) liant les première et seconde bagues (23, 24) et traversant le pignon (27) avec un jeu, et en ce que la couronne intérieure (31) est solidaire des première et seconde bagues (23, 24).4. Device according to claim 2 or 3, characterized in that the outer face of the rotor (16) comprises first and second portions (20, 21) concentric with the axis (9) of the motor and an eccentric portion (22). located between the first and second concentric parts (20, 21), in that said means comprise a pinion (27) mounted to rotate relative to the eccentric portion (22), a third ring (6) forming part of the frame ( 1), surrounding the pinion (27) and meshing with this last, first and second rings (23, 24) located on either side of the pinion (27) and mounted movably in relative rotation around the first and second concentric portions (20, 21) respectively and pins (36) binder the first and second rings (23, 24) and traversing the pinion (27) with a clearance, and in that the inner ring (31) is integral with the first and second rings (23, 24).
5. Dispositif selon la revendication 2 ou 3, caractérisé en ce que la face extérieure du rotor (52) comprend des première et seconde parties (54, 55) concentriques avec l'axe (45) du moteur et une partie excentrique (56) située entre les première et seconde parties concentriques (54, 55), en ce que lesdits moyens comprennent un pignon (58) monté mobile en rotation relative autour de la partie excentrique (56), une première bague (43) faisant partie du bâti (40) et montée mobile en rotation relative autour de la première partie concentrique (54), une seconde bague (63) solidaire de la couronne intérieure (61) et montée mobile en rotation relative autour de la seconde partie concentrique (55), et des goupilles (65) fixées à la première bague (43) et traversant le pignon (58) avec un jeu, et en ce que la couronne intérieure (61) comprend une denture intérieure engrenant avec une denture extérieure (60) du pignon (58).5. Device according to claim 2 or 3, characterized in that the outer face of the rotor (52) comprises first and second parts (54, 55) concentric with the axis (45) of the motor and an eccentric portion (56) located between the first and second concentric parts (54, 55), in that said means comprise a pinion (58) rotatably mounted relative to the eccentric portion (56), a first ring (43) forming part of the frame ( 40) and movably mounted in relative rotation about the first concentric portion (54), a second ring (63) integral with the inner ring (61) and mounted to rotate relatively relative to the second concentric portion (55), and pins (65) fixed to the first ring (43) and traversing the pinion (58) with a clearance, and in that the inner ring (61) comprises an internal toothing meshing with an external toothing (60) of the pinion (58) .
6. Dispositif selon la revendication 4 ou 5, caractérisé en ce que la première bague (23 ; 43), la seconde bague (24 ; 63) et le pignon (27 ; 58) coopèrent avec la face extérieure du rotor (16 ; 52) par l'intermédiaire de roulements respectifs (25, 26, 29 ; 57, 64, 59).6. Device according to claim 4 or 5, characterized in that the first ring (23; 43), the second ring (24; 63) and the pinion (27; 58) cooperate with the outer face of the rotor (16; ) through respective bearings (25, 26, 29; 57, 64, 59).
7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le réducteur de vitesse est de type cycloïdal. 7. Device according to any one of claims 1 to 6, characterized in that the speed reducer is cycloidal type.
EP09785777A 2009-01-07 2009-01-07 Device for producing torque, in particular an orientation device Withdrawn EP2380260A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2009/000010 WO2010079375A1 (en) 2009-01-07 2009-01-07 Device for producing torque, in particular an orientation device

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EP2380260A1 true EP2380260A1 (en) 2011-10-26

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Application Number Title Priority Date Filing Date
EP09785777A Withdrawn EP2380260A1 (en) 2009-01-07 2009-01-07 Device for producing torque, in particular an orientation device

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EP (1) EP2380260A1 (en)
CN (1) CN102362414A (en)
WO (1) WO2010079375A1 (en)

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Publication number Priority date Publication date Assignee Title
CN105645068B (en) * 2011-08-11 2018-06-12 摩尔转动带系统有限公司 End cover designs and removing tool
DE102017104474A1 (en) * 2017-03-03 2018-09-06 Wobben Properties Gmbh Adjustment unit for an azimuth adjustment and / or for a pitch adjustment of a wind energy plant and method

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DE2725723A1 (en) * 1977-06-07 1978-12-21 Mulfingen Elektrobau Ebm External rotor motor with integral reduction gear - has stator winding support holding gear and combined with bearing block
FR2472867A1 (en) * 1979-12-26 1981-07-03 Jaeger ELECTRIC MOTOR WITH STEPPING ADVANCE AND MOTOREDUCTING ASSEMBLY EMPLOYING THE SAME
JPS60109741A (en) * 1983-11-16 1985-06-15 Fujitsu Ltd Power transmission apparatus
DE4423902A1 (en) * 1994-07-09 1996-04-11 Fibro Gmbh Concentric geared motor e.g. for robot mechanisms
JP2006234005A (en) * 2005-02-22 2006-09-07 Aisin Seiki Co Ltd Motor-incorporated hypocycloid-type speed reducer
US7357743B2 (en) * 2005-06-17 2008-04-15 Fengxiang Mao Hub motor

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WO2010079375A1 (en) 2010-07-15

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