EP2641301A2 - Method for assembling a commutator onto the shaft of a rotor and commutator, shaft, rotor and rotor electric machine for implementing this method - Google Patents

Method for assembling a commutator onto the shaft of a rotor and commutator, shaft, rotor and rotor electric machine for implementing this method

Info

Publication number
EP2641301A2
EP2641301A2 EP11794544.4A EP11794544A EP2641301A2 EP 2641301 A2 EP2641301 A2 EP 2641301A2 EP 11794544 A EP11794544 A EP 11794544A EP 2641301 A2 EP2641301 A2 EP 2641301A2
Authority
EP
European Patent Office
Prior art keywords
shaft
rotor
collector
outside
commutator
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Withdrawn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
EP11794544.4A
Other languages
German (de)
French (fr)
Inventor
Grégory GODEFROY
Christophe Dugue
Khalid Sassane
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Equipements Electriques Moteur SAS
Original Assignee
Valeo Equipements Electriques Moteur SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Equipements Electriques Moteur SAS filed Critical Valeo Equipements Electriques Moteur SAS
Publication of EP2641301A2 publication Critical patent/EP2641301A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/14—Fastenings of commutators or slip-rings to shafts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/06—Manufacture of commutators
    • H01R43/08—Manufacture of commutators in which segments are not separated until after assembly
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H02K13/003—Structural associations of slip-rings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H02K13/02—Connections between slip-rings and windings
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49009—Dynamoelectric machine
    • Y10T29/49011—Commutator or slip ring assembly

Definitions

  • the present invention relates to a method of assembling a collector on the shaft of a rotor of a rotating electrical machine, as well as the adapted shaft and collector.
  • the invention also relates to a rotor comprising such shaft and collector, and a rotary electric machine equipped with such a rotor.
  • a manifold having slip rings for supplying power to one or more windings of a rotor of a rotating electrical machine is generally embodied as a separate piece which is then attached to one end of the rotor shaft .
  • the mechanical stresses applied to the collector during the assembly must be low because the material of the collector, in particular plastic, is generally very brittle;
  • a method such as that described in the patent application FR2514209 would probably improve the bonding between the collector and the knurled portion of the outside of the shaft by interposing an impregnating resin.
  • the object of the present invention is therefore to overcome the above drawbacks by proposing a method of assembling a collector on the shaft of a rotor, by press fitting on an externally knurled portion of one end of the rotor. shaft, remarkable in that this fitting is made so that the outer knurled portion remains located outside a first portion of the collector supporting slip rings.
  • an internally knurled portion of the manifold located substantially outside this first portion is advantageously force-fitted on a smooth portion outside the end of the shaft.
  • a collector adapted to the implementation of the method according to the invention, and of the type of those made by overmolding insulating material on electrically conductive elements comprising slip rings, is remarkable in that it comprises an internally located knurled portion essentially outside a first portion of the manifold that supports the slip rings.
  • this manifold has a smooth portion internally outside its knurled portion internally.
  • a shaft of a rotor adapted to the implementation of the method according to the invention is also remarkable in that it comprises an end having an externally knurled portion adapted to cooperate with a second portion of a collector not supporting rings. collectors of this collector.
  • the end of this shaft preferably has a smooth portion externally outside the knurled portion externally.
  • the invention also relates to a rotor comprising a collector and a shaft as described above, and a rotary electrical machine comprising such a rotor.
  • Figure 1 illustrates the method of assembly on the shaft of a rotor according to the invention.
  • Figure 2a is an end view of the end of a shaft of a rotor according to the invention.
  • Figure 2b is an end view of a collector according to the invention.
  • Figure 3 is an axial sectional view of the collector and the end of the rotor shaft according to the invention.
  • Figure 1 shows the proposed solution of assembling a shaft 2 and a collector 3 partially knurled.
  • the end 4 of the shaft 2 has, on the side 5 of the connections of the excitation winding of the rotor, an externally knurled portion 6.
  • these teeth regularly distributed on the periphery of the end 4 of the axis 2 with an outside diameter of about 5.6 mm, are 36 in number and have a height of about 0. , 1 mm.
  • the externally knurled portion 6 extends axially only about
  • This externally smooth portion 7 does not deform the collector 3 during the assembly 1, and in particular the slip rings 8, insofar as, according to the method of the invention, the knurled part externally 6 remains located outside of a first portion A of the collector 3 which supports these rings 8.
  • Maintaining the collector 3 on the end of the shaft 2 is ensured by the deformation of the material of the collector 3, such as plastic, less hard than the material of the shaft 2, generally steel, at the level of a second portion B of the manifold 3 which does not support the slip rings 8.
  • An additional maintenance of the collector 3 on the end 4 of the axis 2, to avoid play, is obtained by providing the collector 3 with an internally knurled portion 9 located essentially outside the first portion A of the collector 3 and at a third extremal portion C.
  • the end view of the collector 3 of FIG. 2a clearly shows the tooth-shaped profile of the axial grooves constituting the knurling 9.
  • these teeth regularly distributed on the periphery of the axial bore 10 with an internal diameter of about 5.6 mm, are 36 in number and have a depth of about 0.1 mm.
  • the internally knurled portion 9 extends axially only about 2 mm, in this particular embodiment of the invention. Most of the axial bore 10, to the electrically conductive elements 1 1, is smooth.
  • the internal diameter of the axial bore of the manifold 3 is advantageously substantially identical to the outer diameter of the end 4 of the rotor axis 2, that is to say about 5.6 mm in this embodiment. . In this way, guidance is obtained without effect on the shape of the slip rings 8.
  • the advantage of the method of assembling a manifold 3 on a shaft 2 according to the invention, and collector 3 and shaft 2 adapted, is that, thanks to the partial knurling on the shaft 2 and on a tip C of the collector 3, a good maintenance of the collector 3 is assured without significant deformation of the slip rings 8.
  • slip rings 8 being less deformed during the assembly operation, a rotating electric machine provided with a rotor comprising a collector 3 and a shaft 2 assembled by the method according to the invention will have a longer service life because the forces and vibrations caused by ovalization of the slip rings 8 will be lower and therefore the wear of the brushes is reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The method of assembly according to the invention involves force-fitting a commutator (3) onto the shaft (2) of a rotor. This force-fitting is over an externally knurled part (6) of one end (4) of the shaft. According to the invention, this force-fitting is performed in such a way that the externally knurled part remains located on the outside of a first portion (A) of the commutator supporting the slip rings (8). According to another feature, an internally knurled part (9) of the commutator, situated essentially on the outside of the first portion (A), is force-fitted over an externally plain part (7) of the end of the shaft. The invention has the notable advantage of allowing longer brush life. The invention is particularly well suited to applications to a motor vehicle alternator or alternator-starter.

Description

PROCEDE D'ASSEMBLAGE D'UN COLLECTEUR SUR L'ARBRE D'UN ROTOR, ET COLLECTEUR, ARBRE, ROTOR ET MACHINE ELECTRIQUE  METHOD OF ASSEMBLING A COLLECTOR ON THE SHAFT OF A ROTOR, AND COLLECTOR, SHAFT, ROTOR AND ELECTRIC MACHINE
TOURNANTE POUR LA MISE EN ŒUVRE DE CELUI-CI DOMAINE TECHNIQUE DE L'INVENTION.  ROTOR FOR IMPLEMENTING THE SAME TECHNICAL FIELD OF THE INVENTION.
La présente invention concerne un procédé d'assemblage d'un collecteur sur l'arbre d'un rotor d'une machine électrique tournante, ainsi que les arbre et collecteur adaptés.  The present invention relates to a method of assembling a collector on the shaft of a rotor of a rotating electrical machine, as well as the adapted shaft and collector.
L'invention concerne également un rotor comprenant de tels arbre et collecteur, ainsi qu'une machine électrique tournante équipée d'un tel rotor.  The invention also relates to a rotor comprising such shaft and collector, and a rotary electric machine equipped with such a rotor.
ARRIERE PLAN TECHNOLOGIQUE DE L'INVENTION. BACKGROUND ART OF THE INVENTION.
Un collecteur comportant des bagues collectrices permettant l'alimentation en courant du ou des enroulements d'un rotor d'une machine électrique tournante est généralement réalisé sous la forme d'une pièce séparée qui est rapportée ensuite à une extrémité de l'arbre du rotor.  A manifold having slip rings for supplying power to one or more windings of a rotor of a rotating electrical machine is generally embodied as a separate piece which is then attached to one end of the rotor shaft .
Il est connu de réaliser un tel collecteur par surmoulage de matière isolante sur des éléments électriquement conducteurs, de manière à former un corps de forme globalement cylindrique présentant sur sa surface extérieure des bagues conductrices, et intérieurement des éléments de connexion des bagues avec les extrémités du ou des enroulements. Un alésage axial permet l'agencement du collecteur en bout d'arbre du rotor.  It is known to make such a collector by overmolding insulating material on electrically conductive elements, so as to form a generally cylindrical body having on its outer surface conductive rings, and internally connecting elements of the rings with the ends of the or windings. An axial bore allows the arrangement of the manifold at the end of the rotor shaft.
L'assemblage du collecteur sur l'arbre est une opération délicate, car elle doit répondre à des objectifs divergents:  Assembling the collector on the tree is a delicate operation because it must meet diverging objectives:
- le collecteur doit être solidement fixé sur l'arbre;  - the manifold must be firmly attached to the shaft;
- les contraintes mécaniques appliquées sur le collecteur au cours de l'assemblage doivent être faibles car le matériau du collecteur, notamment du plastique, est généralement très cassant;  the mechanical stresses applied to the collector during the assembly must be low because the material of the collector, in particular plastic, is generally very brittle;
- le procédé doit être simple à mettre en œuvre pour une fabrication en série. Le procédé décrit dans le brevet américain US41 14056 consiste à emmancher à force, au moyen d'une presse, le collecteur sur l'arbre dont l'extrémité a été moletée.  the process must be simple to implement for mass production. The method described in US Patent US41 14056 is to press forcefully, by means of a press, the collector on the shaft whose end has been knurled.
Ce procédé est simple, mais durant l'opération d'assemblage, la partie moletée extérieurement de l'arbre, comportant des dents présentant des arêtes tranchantes dans le cas d'un moletage important, occasionne des fissurations du collecteur. This method is simple, but during the assembly operation, the knurled part of the outside of the tree, having teeth with edges sharp in the case of a large knurling, causes cracking of the collector.
L'expérience montre que ces fissures fragilisent mécaniquement le collecteur et sont la cause de courts-circuits entre l'arbre et les bagues collectrices.  Experience shows that these cracks mechanically weaken the collector and cause short circuits between the shaft and the slip rings.
De plus, la déformation du collecteur après emmanchement sur l'arbre, notamment des bagues collectrices, n'est pas uniforme. Une section, de circulaire, devient elliptique. Ce défaut se traduit par une usure prématurée des balais et conduit à une réduction de la durée de vie de la machine.  In addition, the deformation of the collector after fitting on the shaft, including slip rings, is not uniform. A section, circular, becomes elliptical. This defect results in premature wear of the brushes and leads to a reduction in the life of the machine.
Une diminution de la hauteur des dents du moletage permettrait de pallier les inconvénients précités, mais diminuerait la fiabilité de la fixation du collecteur sur l'arbre.  A reduction in the height of the teeth of the knurling would make it possible to overcome the aforementioned drawbacks, but would reduce the reliability of the attachment of the collector on the shaft.
Un procédé tel que celui décrit dans la demande de brevet FR2514209 permettrait probablement d'améliorer la solidarisation entre le collecteur et la partie moletée extérieurement de l'arbre en interposant une résine d'imprégnation.  A method such as that described in the patent application FR2514209 would probably improve the bonding between the collector and the knurled portion of the outside of the shaft by interposing an impregnating resin.
Toutefois un procédé de ce type perdrait de sa facilité de mise en œuvre.  However a method of this type would lose its ease of implementation.
DESCRIPTION GENERALE DE L'INVENTION. GENERAL DESCRIPTION OF THE INVENTION
Le but de la présente invention est donc de pallier les inconvénients ci- dessus en proposant un procédé d'assemblage d'un collecteur sur l'arbre d'un rotor, par emmanchement à force sur une partie moletée extérieurement d'une extrémité de l'arbre, remarquable en ce que cet emmanchement est réalisé de telle sorte que la partie moletée extérieurement reste située à l'extérieur d'une première portion du collecteur supportant des bagues collectrices.  The object of the present invention is therefore to overcome the above drawbacks by proposing a method of assembling a collector on the shaft of a rotor, by press fitting on an externally knurled portion of one end of the rotor. shaft, remarkable in that this fitting is made so that the outer knurled portion remains located outside a first portion of the collector supporting slip rings.
De plus, selon ce procédé, une partie moletée intérieurement du collecteur située essentiellement à l'extérieur de cette première portion est avantageusement emmanchée à force sur une partie lisse extérieurement de l'extrémité de l'arbre.  In addition, according to this method, an internally knurled portion of the manifold located substantially outside this first portion is advantageously force-fitted on a smooth portion outside the end of the shaft.
Un collecteur adapté à la mise en oeuvre du procédé selon l'invention, et du type de ceux réalisés par surmoulage de matière isolante sur des éléments électriquement conducteurs comprenant des bagues collectrices, est remarquable en ce qu'il comporte une partie moletée intérieurement située essentiellement à l'extérieur d'une première portion du collecteur qui supporte les bagues collectrices.  A collector adapted to the implementation of the method according to the invention, and of the type of those made by overmolding insulating material on electrically conductive elements comprising slip rings, is remarkable in that it comprises an internally located knurled portion essentially outside a first portion of the manifold that supports the slip rings.
De préférence, ce collecteur présente une partie lisse intérieurement en dehors de sa partie moletée intérieurement. Un arbre d'un rotor adapté à la mise en oeuvre du procédé selon l'invention est aussi remarquable en ce qu'il comporte une extrémité présentant une partie moletée extérieurement apte à coopérer avec une seconde portion d'un collecteur ne supportant pas des bagues collectrices de ce collecteur. Preferably, this manifold has a smooth portion internally outside its knurled portion internally. A shaft of a rotor adapted to the implementation of the method according to the invention is also remarkable in that it comprises an end having an externally knurled portion adapted to cooperate with a second portion of a collector not supporting rings. collectors of this collector.
L'extrémité de cet arbre présente de préférence une partie lisse extérieurement en dehors de la partie moletée extérieurement.  The end of this shaft preferably has a smooth portion externally outside the knurled portion externally.
L'invention concerne aussi un rotor comprenant un collecteur et un arbre tels que décrits précédemment, ainsi qu'une machine électrique tournante comprenant un tel rotor.  The invention also relates to a rotor comprising a collector and a shaft as described above, and a rotary electrical machine comprising such a rotor.
Ces quelques spécifications essentielles auront rendu évidents pour l'homme de métier les avantages apportés par le procédé d'assemblage d'un collecteur sur l'arbre d'un rotor selon invention par rapport à l'état de la technique antérieur, au plan du maintien du collecteur sur l'arbre sans détérioration des bagues collectrices.  These few essential specifications will have made obvious to the skilled person the advantages provided by the method of assembling a collector on the shaft of a rotor according to the invention compared to the state of the prior art, in terms of maintaining the manifold on the shaft without damaging the slip rings.
Quand cette machine électrique tournante est un alternateur, ou alterno- démarreur de véhicule automobile, la durée de vie allongée des balais autorisée par la présente invention est un avantage très important.  When this rotating electrical machine is an alternator, or alternator-starter motor vehicle, the extended life of the brushes authorized by the present invention is a very important advantage.
Les spécifications détaillées de l'invention sont données dans la description qui suit en liaison avec les dessins ci-annexés. Il est à noter que ces dessins n'ont d'autre but que d'illustrer le texte de la description et ne constituent en aucune sorte une limitation de la portée de l'invention.  The detailed specifications of the invention are given in the following description in conjunction with the accompanying drawings. It should be noted that these drawings have no other purpose than to illustrate the text of the description and do not constitute in any way a limitation of the scope of the invention.
BREVE DESCRIPTION DES DESSINS. BRIEF DESCRIPTION OF THE DRAWINGS
La Figure 1 illustre le procédé d'assemblage sur l'arbre d'un rotor selon l'invention.  Figure 1 illustrates the method of assembly on the shaft of a rotor according to the invention.
La Figure 2a est une vue en bout de l'extrémité d'un arbre d'un rotor selon l'invention.  Figure 2a is an end view of the end of a shaft of a rotor according to the invention.
La Figure 2b est une vue en bout d'un collecteur selon l'invention.  Figure 2b is an end view of a collector according to the invention.
La Figure 3 est vue en coupe axiale du collecteur et de l'extrémité de l'arbre du rotor selon l'invention.  Figure 3 is an axial sectional view of the collector and the end of the rotor shaft according to the invention.
DESCRIPTION DU MODE DE REALISATION PREFERE DE L'INVENTION. DESCRIPTION OF THE PREFERRED EMBODIMENT OF THE INVENTION
L'optimisation de l'assemblage 1 et du serrage entre l'arbre 2 et le collecteur 3 consiste à modifier les deux surfaces en contact afin de diminuer les déformations des bagues sans dégrader le niveau de serrage. La Figure 1 montre bien la solution proposée consistant à assembler un arbre 2 et un collecteur 3 partiellement moletés. The optimization of the assembly 1 and the clamping between the shaft 2 and the collector 3 consists in modifying the two surfaces in contact in order to reduce the deformations of the rings without degrading the level of tightening. Figure 1 shows the proposed solution of assembling a shaft 2 and a collector 3 partially knurled.
L'extrémité 4 de l'arbre 2 présente, du côté 5 des connexions de l'enroulement d'excitation du rotor, une partie moletée extérieurement 6.  The end 4 of the shaft 2 has, on the side 5 of the connections of the excitation winding of the rotor, an externally knurled portion 6.
La vue en bout de l'extrémité 4 de l'arbre 2 de la Figure 2a montre bien le profil en forme de dents des arêtes axiales qui constituent le moletage 6.  The end view of the end 4 of the shaft 2 of Figure 2a clearly shows the tooth-shaped profile of the axial edges constituting the knurling 6.
Dans cette forme de réalisation, ces dents, réparties régulièrement sur la périphérie de l'extrémité 4 de l'axe 2 d'un diamètre extérieur d'environ 5,6 mm, sont au nombre de 36 et présentent une hauteur d'environ 0,1 mm.  In this embodiment, these teeth, regularly distributed on the periphery of the end 4 of the axis 2 with an outside diameter of about 5.6 mm, are 36 in number and have a height of about 0. , 1 mm.
La partie extérieurement moletée 6 s'étend axialement seulement sur environ The externally knurled portion 6 extends axially only about
5 mm dans cette forme de réalisation particulière de l'invention. 5 mm in this particular embodiment of the invention.
La plus grande partie de l'extrémité 4 de l'axe 2 est donc lisse.  Most of the end 4 of the axis 2 is smooth.
Cette partie lisse extérieurement 7 ne déforme pas le collecteur 3 au cours de l'assemblage 1 , et notamment les bagues collectrices 8, dans la mesure où, selon le procédé de l'invention, la partie moletée extérieurement 6 reste située à l'extérieur d'une première portion A du collecteur 3 qui supporte ces bagues 8.  This externally smooth portion 7 does not deform the collector 3 during the assembly 1, and in particular the slip rings 8, insofar as, according to the method of the invention, the knurled part externally 6 remains located outside of a first portion A of the collector 3 which supports these rings 8.
Le maintien du collecteur 3 sur l'extrémité de l'arbre 2 est assuré par la déformation du matériau du collecteur 3, tel que du plastique, moins dur que la matière de l'arbre 2, généralement de l'acier, au niveau d'une seconde portion B du collecteur 3 qui ne supporte pas les bagues collectrices 8.  Maintaining the collector 3 on the end of the shaft 2 is ensured by the deformation of the material of the collector 3, such as plastic, less hard than the material of the shaft 2, generally steel, at the level of a second portion B of the manifold 3 which does not support the slip rings 8.
Un maintien supplémentaire du collecteur 3 sur l'extrémité 4 de l'axe 2, pour éviter tout jeu, est obtenu en munissant le collecteur 3 d'une partie moletée intérieurement 9 située essentiellement à l'extérieur de la première portion A du collecteur 3 et au niveau d'une troisième portion C extrémale.  An additional maintenance of the collector 3 on the end 4 of the axis 2, to avoid play, is obtained by providing the collector 3 with an internally knurled portion 9 located essentially outside the first portion A of the collector 3 and at a third extremal portion C.
Dans ces conditions, la déformation du matériau du collecteur 3, qui permet le serrage du collecteur 3 sur l'extrémité 4 de l'arbre 2 du rotor, n'a pas d'influence sur la forme des bagues collectrices 8 qui restent cylindriques.  Under these conditions, the deformation of the material of the collector 3, which allows the clamping of the collector 3 on the end 4 of the shaft 2 of the rotor, has no influence on the shape of the slip rings 8 which remain cylindrical.
La vue en bout du collecteur 3 de la Figure 2a montre bien le profil en forme de dents des rainures axiales qui constituent le moletage 9.  The end view of the collector 3 of FIG. 2a clearly shows the tooth-shaped profile of the axial grooves constituting the knurling 9.
Dans cette forme de réalisation, ces dents, réparties régulièrement sur la périphérie de l'alésage axial 10 d'un diamètre intérieur d'environ 5,6 mm, sont au nombre de 36 et présentent une profondeur d'environ 0,1 mm.  In this embodiment, these teeth, regularly distributed on the periphery of the axial bore 10 with an internal diameter of about 5.6 mm, are 36 in number and have a depth of about 0.1 mm.
La partie moletée intérieurement 9 s'étend axialement seulement sur environ 2 mm, dans cette forme de réalisation particulière de l'invention. La plus grande partie de l'alésage axial 10, vers les éléments électriquement conducteurs 1 1 , est donc lisse. The internally knurled portion 9 extends axially only about 2 mm, in this particular embodiment of the invention. Most of the axial bore 10, to the electrically conductive elements 1 1, is smooth.
Comme le montre bien la coupe axiale de la Figure 3, la partie lisse intérieurement 12 du collecteur 3 et la partie lisse extérieurement 7 de l'extrémité 4 de l'arbre 2 sont en regard au niveau de la première portion A du collecteur supportant les bagues collectrice 8, quand collecteur 3 et arbre 2 sont assemblés.  As the axial section of FIG. 3 clearly shows, the inner smooth portion 12 of the collector 3 and the outer smooth portion 7 of the end 4 of the shaft 2 are opposite at the level of the first portion A of the collector supporting the collectors. slip rings 8, when manifold 3 and shaft 2 are assembled.
Le diamètre interne de l'alésage axial du collecteur 3 est avantageusement sensiblement identique au diamètre externe de l'extrémité 4 de l'axe 2 du rotor, c'est-à-dire d'environ 5,6 mm dans cette forme de réalisation. De la sorte, un guidage est obtenu sans effet sur la forme des bagues collectrices 8.  The internal diameter of the axial bore of the manifold 3 is advantageously substantially identical to the outer diameter of the end 4 of the rotor axis 2, that is to say about 5.6 mm in this embodiment. . In this way, guidance is obtained without effect on the shape of the slip rings 8.
L'avantage du procédé d'assemblage d'un collecteur 3 sur un arbre 2 selon l'invention, et des collecteur 3 et arbre 2 adaptés, est que, grâce au moletage partiel sur l'arbre 2 et sur un bout C du collecteur 3, un bon maintien du collecteur 3 est assuré sans déformation notable des bagues collectrices 8.  The advantage of the method of assembling a manifold 3 on a shaft 2 according to the invention, and collector 3 and shaft 2 adapted, is that, thanks to the partial knurling on the shaft 2 and on a tip C of the collector 3, a good maintenance of the collector 3 is assured without significant deformation of the slip rings 8.
Les bagues collectrices 8 étant moins déformées au cours de l'opération d'assemblage, une machine électrique tournante munie d'un rotor comprenant un collecteur 3 et un arbre 2 assemblés par le procédé selon l'invention verra sa durée de vie augmenter, car les efforts et les vibrations provoquées par une ovalisation des bagues collectrices 8 seront plus faibles et par conséquent l'usure des balais plus réduite.  The slip rings 8 being less deformed during the assembly operation, a rotating electric machine provided with a rotor comprising a collector 3 and a shaft 2 assembled by the method according to the invention will have a longer service life because the forces and vibrations caused by ovalization of the slip rings 8 will be lower and therefore the wear of the brushes is reduced.
Comme il va de soi, l'invention ne se limite pas au seul mode d'exécution préférentiel décrit ci-dessus.  It goes without saying that the invention is not limited to the single preferred embodiment described above.
Le nombre de bagues collectrices montrées, le nombre de dents des parties moletées indiqué, et les dimensions spécifiées ne sont que des exemples.  The number of slip rings shown, the number of knurled teeth indicated, and the dimensions specified are just examples.
L'homme de métier appliquera facilement le procédé d'assemblage d'un collecteur 3 sur l'arbre 2 d'un rotor décrit ci-dessus à des machines électriques tournantes de toutes tailles.  Those skilled in the art will easily apply the method of assembling a manifold 3 on the shaft 2 of a rotor described above to rotating electrical machines of all sizes.
L'invention embrasse donc toutes les variantes possibles de réalisation dans la limite de l'objet des revendications ci-après.  The invention therefore embraces all possible variants of embodiment within the scope of the subject of the claims below.

Claims

REVENDICATIONS
1) Procédé d'assemblage d'un collecteur (3) sur l'arbre (2) d'un rotor par emmanchement à force sur une partie moletée extérieurement (6) d'une extrémité (4) dudit arbre (2), caractérisé en ce que ledit emmanchement est réalisé de telle sorte que ladite partie moletée extérieurement (6) reste située à l'extérieur d'une première portion (A) dudit collecteur (3) supportant des bagues collectrices (8). 1) A method of assembling a collector (3) on the shaft (2) of a rotor by press fitting on an externally knurled portion (6) of an end (4) of said shaft (2), characterized in that said fitting is made such that said externally knurled portion (6) remains outside a first portion (A) of said manifold (3) supporting slip rings (8).
2) Procédé d'assemblage d'un collecteur (3) sur l'arbre (2) d'un rotor selon la revendication 1 précédente, caractérisé en ce qu'une partie moletée intérieurement2) A method of assembling a collector (3) on the shaft (2) of a rotor according to the preceding claim 1, characterized in that an internally knurled portion
(9) dudit collecteur (3) située essentiellement à l'extérieur de ladite première portion (A) est emmanchée à force sur une partie lisse extérieurement (7) de ladite extrémité (4) dudit arbre (2). 3) Collecteur (3) adapté à la mise en oeuvre du procédé selon l'une quelconque des revendications 1 ou 2 précédentes et du type de ceux réalisés par surmoulage de matière isolante sur des éléments électriquement conducteurs (1 1 ) comprenant des bagues collectrices (8), caractérisé en ce qu'il comporte une partie moletée intérieurement (9) située essentiellement à l'extérieur d'une première portion (A) dudit collecteur (3) supportant lesdites bagues collectrices (8). (9) said manifold (3) located substantially outside said first portion (A) is force-fitted on an outer smooth portion (7) of said end (4) of said shaft (2). 3) collector (3) adapted to implement the method according to any one of claims 1 or 2 above and the type of those made by overmolding insulating material on electrically conductive elements (1 1) comprising slip rings ( 8), characterized in that it comprises an internally knurled portion (9) located essentially outside a first portion (A) of said manifold (3) supporting said slip rings (8).
4) Collecteur (3) selon la revendication 3, caractérisé en ce qu'il présente une partie lisse intérieurement (12) en dehors de ladite partie moletée intérieurement (9). 5) Collecteur (3) selon la revendication 4, caractérisé en ce qu'il présente un diamètre intérieur d'environ 5,6 mm, et en ce que ladite partie moletée intérieurement (9) présente 36 dents d'une profondeur d'environ 0,1 mm s'étendant axialement sur environ 2 mm. 6) Arbre (2) d'un rotor adapté à la mise en oeuvre du procédé selon l'une quelconque des revendications 1 ou 2 précédentes, caractérisé en ce qu'il comporte une extrémité (4) présentant une partie moletée extérieurement (6) apte à coopérer avec une seconde portion (B) d'un collecteur (3) ne supportant pas des bagues collectrices (8) dudit collecteur (3). 7) Arbre (2) d'un rotor selon la revendication 6 précédente, caractérisé en ce que ladite extrémité (4) présente une partie lisse extérieurement (7) en dehors de ladite partie moletée extérieurement (6). 8) Arbre (2) d'un rotor selon la revendication 7 précédente, caractérisé en ce que ladite extrémité (4) présente un diamètre extérieur d'environ 5,6 mm, et en ce que ladite partie moletée extérieurement (6) présente 36 dents d'une hauteur d'environ 0,1 mm s'étendant axialement sur environ 5 mm. 4) collector (3) according to claim 3, characterized in that it has a smooth portion internally (12) outside said internally knurled portion (9). 5) collector (3) according to claim 4, characterized in that it has an inner diameter of about 5.6 mm, and in that said internally knurled portion (9) has 36 teeth of a depth of about 0.1 mm extending axially about 2 mm. 6) shaft (2) of a rotor adapted to the implementation of the method according to any one of claims 1 or 2 above, characterized in that it comprises an end (4) having an externally knurled portion (6) adapted to cooperate with a second portion (B) of a collector (3) not supporting slip rings (8) of said collector (3). 7) shaft (2) of a rotor according to the preceding claim 6, characterized in that said end (4) has an outer smooth portion (7) outside said outer knurled portion (6). 8) shaft (2) of a rotor according to claim 7, characterized in that said end (4) has an outside diameter of about 5.6 mm, and in that said externally knurled portion (6) presents teeth of a height of about 0.1 mm extending axially about 5 mm.
9) Rotor caractérisé en ce qu'il comprend un collecteur (3) selon l'une quelconque des revendications 3 à 5 précédentes et un arbre (2) selon l'une quelconque des revendications 6 à 8 précédentes. 9) Rotor characterized in that it comprises a collector (3) according to any one of claims 3 to 5 above and a shaft (2) according to any one of claims 6 to 8 above.
10) Machine électrique tournante caractérisée en ce qu'elle comprend un rotor selon la revendication 9 précédente. 10) Rotary electrical machine characterized in that it comprises a rotor according to claim 9 above.
EP11794544.4A 2010-11-18 2011-11-10 Method for assembling a commutator onto the shaft of a rotor and commutator, shaft, rotor and rotor electric machine for implementing this method Withdrawn EP2641301A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1059460A FR2967844B1 (en) 2010-11-18 2010-11-18 METHOD FOR ASSEMBLING A COLLECTOR ON THE SHAFT OF A ROTOR, AND MANIFOLD, SHAFT, ROTOR AND ROTATING ELECTRIC MACHINE FOR CARRYING OUT SAID METHOD
PCT/FR2011/052617 WO2012066218A2 (en) 2010-11-18 2011-11-10 Method for assembling a commutator onto the shaft of a rotor and commutator, shaft, rotor and rotor electric machine for implementing this method

Publications (1)

Publication Number Publication Date
EP2641301A2 true EP2641301A2 (en) 2013-09-25

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EP11794544.4A Withdrawn EP2641301A2 (en) 2010-11-18 2011-11-10 Method for assembling a commutator onto the shaft of a rotor and commutator, shaft, rotor and rotor electric machine for implementing this method

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US (1) US20130342072A1 (en)
EP (1) EP2641301A2 (en)
KR (1) KR20140004082A (en)
CN (1) CN103222130B (en)
BR (1) BR112013006176A2 (en)
FR (1) FR2967844B1 (en)
WO (1) WO2012066218A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103660612B (en) * 2013-12-04 2016-02-24 攀钢集团攀枝花钢钒有限公司 Central cover device and steel rail printer
CN106464092B (en) * 2014-06-18 2018-12-28 三菱电机株式会社 The collector machine of alternating current generator
KR101755491B1 (en) * 2015-12-02 2017-07-10 현대자동차 주식회사 Rotor structure of wrsm motor
CN106911232B (en) * 2017-04-01 2024-04-16 宁波韵升电驱动技术有限公司 Pressing device and pressing method for armature commutator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4476410A (en) * 1983-08-12 1984-10-09 Wolcott John H Eddy current coupling with slip ring cleaning mechanism

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716269A (en) * 1945-08-21 1955-08-30 Gilbert Co A C Method of bushing frangible bodies to make fractureproof
US3080615A (en) * 1958-11-17 1963-03-12 Gen Motors Corp Commutator and method of attaching same
US3271604A (en) * 1962-11-21 1966-09-06 Gen Motors Corp Electrical conductor connecting device
DE1949285U (en) * 1965-08-14 1966-11-10 Bosch Gmbh Robert INSULATING HUB FOR SLIP RING BODIES AND COMMUTATORS.
DE2539091C2 (en) * 1975-09-03 1985-06-13 Robert Bosch Gmbh, 7000 Stuttgart Slip ring assembly
US4114056A (en) 1976-03-30 1978-09-12 Nippondenso Co., Ltd. Rotor for alternating current generator
DE3139217A1 (en) 1981-10-02 1983-04-21 Robert Bosch Gmbh, 7000 Stuttgart Slipring arrangement
EP0094163B2 (en) * 1982-05-06 1990-02-28 LUCAS INDUSTRIES public limited company Small diameter slip ring production
DE3838436C2 (en) * 1988-11-12 2002-09-19 Bosch Gmbh Robert Slip ring assembly
FR2710199B1 (en) * 1993-09-16 1995-12-08 Valeo Equip Electr Moteur Attached manifold for alternator including motor vehicle.
US5612584A (en) * 1995-05-15 1997-03-18 Ford Motor Company Slip ring assembly with reinforcement ring
DE19603378A1 (en) * 1996-01-31 1997-08-07 Bosch Gmbh Robert Slip ring arrangement
DE19702737A1 (en) * 1997-01-27 1998-07-30 Hilti Ag Electric motor
JP3420952B2 (en) * 1998-11-27 2003-06-30 三菱電機株式会社 AC generator for vehicles
JP2002238225A (en) * 2001-02-06 2002-08-23 Mitsubishi Electric Corp Ac generator
JP3812456B2 (en) * 2002-02-15 2006-08-23 株式会社デンソー Slip ring device for vehicle alternator
FR2885983B1 (en) * 2005-05-19 2015-07-24 Valeo Equip Electr Moteur SEALING BY DEFORMATION OF MATERIAL
FR2898068B1 (en) * 2006-03-01 2009-01-16 Valeo Equip Electr Moteur DEVICE FOR ASSEMBLING A DRIVE MEMBER WITH A ROTOR-FITTED SHAFT OF A ROTATING ELECTRIC MACHINE
DE102006036392A1 (en) * 2006-03-31 2007-11-22 Aweco Appliance Systems Gmbh & Co. Kg Electric motor with rotor, rotor and method for producing a rotor for an electric motor
DE102007032133A1 (en) * 2007-06-30 2009-01-02 Robert Bosch Gmbh Electric machine
DE102007051583A1 (en) * 2007-10-29 2009-04-30 Robert Bosch Gmbh Method for producing a commutator ring for a roll commutator of an electric machine, and electric machine
CN201436739U (en) * 2009-06-23 2010-04-07 锦州汉拿电机有限公司 Collector ring structure for vehicle AC generator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4476410A (en) * 1983-08-12 1984-10-09 Wolcott John H Eddy current coupling with slip ring cleaning mechanism

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2012066218A2 *

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KR20140004082A (en) 2014-01-10
WO2012066218A2 (en) 2012-05-24
FR2967844A1 (en) 2012-05-25
CN103222130B (en) 2016-05-04
FR2967844B1 (en) 2012-11-30
WO2012066218A3 (en) 2012-11-29
CN103222130A (en) 2013-07-24
BR112013006176A2 (en) 2016-06-07
US20130342072A1 (en) 2013-12-26

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