EP2313951B1 - Brush device for motor vehicle starter - Google Patents

Brush device for motor vehicle starter Download PDF

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Publication number
EP2313951B1
EP2313951B1 EP09784488.0A EP09784488A EP2313951B1 EP 2313951 B1 EP2313951 B1 EP 2313951B1 EP 09784488 A EP09784488 A EP 09784488A EP 2313951 B1 EP2313951 B1 EP 2313951B1
Authority
EP
European Patent Office
Prior art keywords
brush
holder assembly
support
cages
brushes
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.)
Active
Application number
EP09784488.0A
Other languages
German (de)
French (fr)
Other versions
EP2313951C0 (en
EP2313951A2 (en
Inventor
Stéphane PLAIDEAU
Maximilien Gentil
Wilfried Pays
Jean-Sébastien Metral
Wei Dan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Electrification
Original Assignee
Valeo Equipements Electriques Moteur SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR0855053A external-priority patent/FR2934435B1/en
Priority claimed from FR0855060A external-priority patent/FR2934436B1/en
Application filed by Valeo Equipements Electriques Moteur SAS filed Critical Valeo Equipements Electriques Moteur SAS
Publication of EP2313951A2 publication Critical patent/EP2313951A2/en
Application granted granted Critical
Publication of EP2313951B1 publication Critical patent/EP2313951B1/en
Publication of EP2313951C0 publication Critical patent/EP2313951C0/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H01R39/38—Brush holders
    • H01R39/385—Means for mechanical fixation of the brush holder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles

Definitions

  • the invention relates in particular to a brushed device for a rotating electrical machine, in particular a starter or an alternator of a motor vehicle.
  • the patent KR 430 503 also describes a brushed device for a rotating electric machine.
  • US4114061A discloses a motor vehicle starter according to the preamble of claim 1.
  • the wear of the brushes is linked to the phenomenon of electro-erosion and the speed of the electro-erosion is a function of the intensity of the electric current passing through the brush. It is possible to reduce this electric current by increasing the number of brushes aligned in contact with the rotor collector, which extends the life of the brushes.
  • the invention aims to propose a new brush device.
  • the subject of the invention is therefore a motor vehicle starter according to claim 1.
  • the two brushes of the brush holder assembly are arranged substantially aligned on a straight line parallel to an axis of rotation of the collector.
  • the brush holder assembly is made from a single part.
  • the brush holder assembly is produced by molding or, alternatively, preferably by cutting and folding a sheet metal.
  • the brush holder assembly is made from at least two assembled parts, for example by welding or gluing, each part forming in particular one of the cages of the brush holder assembly.
  • the brush holder assembly is arranged to be mounted on the support by snap-fastening or crimping.
  • the brush holder assembly can be arranged so that, after mounting on the support, the two cages are arranged substantially on either side of the support.
  • the two cages of the brush holder assembly are connected together by a hinge.
  • the two cages of the brush holder assembly form a common housing to receive the two brushes and, after mounting the brush holder assembly on the support, the two brushes of this brush holder assembly are separated from each other by the support.
  • the brushes are arranged in contact with each other and substantially aligned on a straight line parallel to an axis of rotation of the collector.
  • the brushes arranged in a contiguous manner can have a reduced size, which can make it possible to have a relatively compact machine.
  • the brush holder assembly is for example made from a single piece.
  • the brush holder assembly is made from two assembled parts, for example by welding or gluing, each part forming in particular one of the cages of the brush holder assembly.
  • the support comprises an electrically conductive layer interposed between two electrically insulating layers.
  • each cage receives a spring on which the brush placed in this cage applies.
  • This starter 1 comprises, on the one hand, a rotor 2, also called an armature, which can rotate around an axis X, and on the other hand, a stator 3, also called an inductor, around the rotor 2.
  • This stator 3 comprises a yoke on which one or more pole pieces 4 are fixed for the installation of an inductor winding 5.
  • the rotor 2 comprises a rotor body 7, and an armature winding 8 wound in notches of the rotor body 7.
  • This armature winding 8 forms, on either side of the rotor body 7, a front bun 9 and a rear bun 10.
  • the rotor 2 is provided, at the rear, with a collector 12 comprising a plurality of contact parts electrically connected to the conductive elements, formed in the example considered by wires of the armature winding 8.
  • a group of brushes 13 of a brush device 50 is provided for the electrical supply of the armature winding 8, at least one of the brushes 13 being connected to the ground of the starter 1 and at least another of the brushes 13 being connected to a contactor 17.
  • the brushes 13 rub on the collector 12 when the rotor 2 is rotating.
  • the brushes 13 are made for example from carbon.
  • the brush device 50 will be described in more detail below.
  • the starter 1 further comprises a launcher 19 slidably mounted on a drive shaft 18 and capable of being rotated around the axis X by the rotor 2.
  • a speed reducer assembly 20 can be interposed between the rotor 2 and the drive shaft 18, in a manner known per se.
  • the launcher 19 comprises a drive element formed by a pinion 21 and intended to engage on a drive member 33 of the combustion engine.
  • This drive member is for example a toothed crown.
  • the launcher 19 further comprises a free wheel 22 and a pulley washer 23 defining between them a groove 24 to receive the end 25 of a fork 27.
  • This fork 27 is made for example by molding a plastic material.
  • the fork 27 is actuated by the contactor 17 to move the launcher 19 relative to the drive shaft 18, along the axis pinion 21, and a second position in which the launcher 19 is disengaged from the toothed ring 33.
  • the contactor 17 comprises a terminal 29 connected via an electrical connection element, in particular a wire 30, to a vehicle power supply such as a battery 26.
  • the device 50 comprises a support 51 provided with an electrically conductive plate 52, for example made of steel, and having an annular shape perpendicular to the axis X.
  • the plate 52 comprises, on one side 53, two diametrically opposed recesses 54.
  • Each recess 54 receives an insulating insert 55, made for example of thermoset plastic material.
  • This insert 55 includes two holes 57 allowing it to be fixed on the plate 52 using rivets.
  • the thickness of the insert 55 is substantially equal to the depth of the recess 54.
  • the insert 55 is used to mount a brush holder assembly 60 on the support 51.
  • This brush holder assembly 60 comprises two cages 61 and 62 each arranged to receive a brush 13.
  • the brush device 50 comprises four brush holder assemblies 60 each carrying a pair of brushes 13.
  • Two of the assemblies 60 are mounted on the support 51 using insulating inserts 55, the brushes 13 of these assemblies then being connected to a power supply.
  • the two other assemblies 60 are fixed directly to the conductive plate 52, the brushes of these assemblies 60 then being, in this example, grounded.
  • each brush holder assembly 60 is made in one piece, in particular by cutting and folding a steel sheet.
  • cages 61 and 62 are integral with each other, which makes it easier to mount the assembly 60 either on the insulating insert 55 or on the plate 52.
  • the two cages 61 and 62 are connected together by a front hinge 65.
  • the cages 61 and 62 are slightly pushed away from each other by the action of the hinge 62.
  • the hinge 62 is arranged to engage on a radially inner edge 58 of the support 51.
  • Each cage 61; 62 comprises a substantially cylindrical wall 67 with a radial axis Y perpendicular to the axis X and having a substantially rectangular section.
  • the section of the wall 67 is chosen to substantially match the shape of the corresponding brush 13.
  • the wall 67 is split on one side and has a bulge 69 on an opposite side for the passage of a spring.
  • the cages 61 and 62 are open at both radial ends.
  • Each brush holder assembly 60 comprises on a side opposite the hinge 65 two crimping lugs 70, each connecting to a cage 61; 62 (see in particular figure 5 ).
  • the tabs 70 are folded onto an outer edge 59 of the insert 55 (see figures 3 and 4 notably).
  • the brush holder assembly 60 is thus fixed on the insert 55.
  • This assembly obtained is then placed and fixed on the plate 52, in a recess 54, by riveting.
  • the recess 54 of the plate 52 is provided with a recess 72 to allow the cage 62 to pass (see in particular figure 2 ).
  • Another of the brush holder assemblies 60 is fixed directly on the plate 52 in a manner substantially similar to the case of fixing on the insert 55.
  • the plate 52 includes a slot 73 for the passage of the crimping lugs 70 (see figures 2 and 3 notably).
  • the brush holder assemblies 60 can be easily fixed on the support 51.
  • the cages 61 and 62 define separate compartments for the brushes.
  • the brush device 50 may include a brush holder assembly 80 which initially has a common housing 81 for the two brushes 13 to be put in place.
  • This comprises a conductive layer 87 interposed between two exterior insulating layers 86.
  • the brush holder assembly 80 includes, on one side, two lugs 88 to be riveted onto the support 85.
  • the assembly 80 also includes slots 89, on each side, allowing this assembly 80 to be inserted by sliding, in the plane of the support 85, onto this support 85.
  • the assembly 80 further comprises, at the rear, latching elements 90 such as two elastically deformable tabs, capable of being applied to a rear edge 91 of the support 85 to prevent the removal of this assembly 80.
  • latching elements 90 such as two elastically deformable tabs
  • the assembly 80 is made in one piece.
  • the brush holder assembly comprises two latching tabs 90.
  • the brush holder assembly may comprise a single latch tab 90, as illustrated in the Figure 9 .
  • the cages 61 and 62 of the brush holder assembly are arranged on either side of the support 51 or 85.
  • Each brush holder 102 has two cages 104 and 105 for brushes 13.
  • These cages 104 and 105 are arranged on the same side of the support 101.
  • These assemblies 102 do not have a front hinge.
  • Each brush holder assembly 102 comprises a wall 107 having a substantially S-shaped profile when observed in a radial direction, so as to define the two cages 104 and 105.
  • Each cage 104; 105 is closed at the rear by a shutter 110 fixed on the cage 104; 105 corresponding by cooperation of fixing elements 111 and 112.
  • These elements include for example a tab 111 capable of engaging in an orifice 113 of the cage 104; 105.
  • a spring 115 is placed at the bottom of each cage 104; 105, against the shutter 110.
  • This spring 115 serves to exert on the associated brush 13 a force tending to apply it against the collector 12 of the starter.
  • the brush holder assembly 102 is fixed on the support for example by folding the tabs or tabs of this assembly onto the support.
  • the brushes 13 are separated from each other.
  • the support 85 has a recess 120 and receives a brush holder assembly 130 provided with cages 131 and 132 arranged on either side of the support 85.
  • the cages 131 and 132 communicate with each other through the recess 120 so that the brushes 13 placed in these cages are contiguous.
  • the assembly 130 includes two lugs 134 allowing this assembly 130 to be riveted onto the support 85.
  • the assembly 130 further comprises two side crimping lugs 135 arranged to be crimped onto the support 85, on its two opposite faces.
  • FIG. 15 shows the legs 135 in the folded position.
  • the assembly 130 is made in one piece.
  • the brush holder assembly 140 comprises, in addition to the riveting lugs 134, a stop formed on a folded front tongue 141 of the assembly 140.
  • Two retaining flaps 142 are provided on the assembly 140 to apply on two opposite sides of the support 85.
  • the brush holder assembly 140 further comprises latching tabs 145, at the rear, to engage on supports 146 of the support 85 to immobilize, in connection with the stop effect at the front, the assembly 140 on support 85.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motor Or Generator Frames (AREA)

Description

L'invention concerne notamment un dispositif à balais pour une machine électrique tournante, notamment un démarreur ou un alternateur de véhicule automobile.The invention relates in particular to a brushed device for a rotating electrical machine, in particular a starter or an alternator of a motor vehicle.

On connaît par le brevet US 4 754 184 un dispositif à balais pour machine électrique comportant une plaque de base et quatre porte-balais montés sur la plaque de base en étant espacés les uns des autres le long d'une circonférence de la plaque de base. Chaque porte-balai reçoit un seul balai.We know from the patent US 4,754,184 a brush device for an electric machine comprising a base plate and four brush holders mounted on the base plate spaced apart from each other along a circumference of the base plate. Each broom holder receives a single broom.

Le brevet KR 430 503 décrit également un dispositif à balais pour machine électrique tournante.The patent KR 430 503 also describes a brushed device for a rotating electric machine.

US4114061A divulgue un démarreur de véhicule automobile selon le préambule de la revendication 1. US4114061A discloses a motor vehicle starter according to the preamble of claim 1.

L'usure des balais est liée au phénomène de l'électro-érosion et la vitesse de l'électro-érosion est fonction de l'intensité du courant électrique passant dans le balai. Il est possible de réduire ce courant électrique en augmentant le nombre de balais alignés en contact avec le collecteur du rotor, ce qui permet d'allonger la vie des balais.The wear of the brushes is linked to the phenomenon of electro-erosion and the speed of the electro-erosion is a function of the intensity of the electric current passing through the brush. It is possible to reduce this electric current by increasing the number of brushes aligned in contact with the rotor collector, which extends the life of the brushes.

L'invention vise à proposer un nouveau dispositif à balais.The invention aims to propose a new brush device.

L'invention a ainsi pour objet un démarreur de véhicule automobile selon la revendication 1.The subject of the invention is therefore a motor vehicle starter according to claim 1.

L'utilisation de plusieurs paires de balais, les balais de chaque paire étant placés en parallèle, permet à la pluralité de balais de mieux épouser la forme du collecteur sur lequel ces balais viennent frotter, notamment par rapport au cas de balais monoblocs.The use of several pairs of brushes, the brushes of each pair being placed in parallel, allows the plurality of brushes to better match the shape of the collector on which these brushes rub, particularly compared to the case of one-piece brushes.

L'utilisation de balais en parallèle permet également de limiter les risques liés aux rebonds éventuels de ces balais sur le collecteur.The use of brushes in parallel also makes it possible to limit the risks linked to possible rebounds of these brushes on the collector.

De plus l'augmentation du nombre de balais entraîne l'augmentation du nombre de tresses d'alimentation électrique des balais, ce qui permet de réduire le courant électrique dans chaque tresse, et donc chaque balai.In addition, the increase in the number of brushes leads to an increase in the number of electrical power supply braids of the brushes, which makes it possible to reduce the electric current in each braid, and therefore each brush.

Les deux balais de l'ensemble porte-balais sont disposés de manière sensiblement alignée sur une droite parallèle à un axe de rotation du collecteur.The two brushes of the brush holder assembly are arranged substantially aligned on a straight line parallel to an axis of rotation of the collector.

Ainsi il est possible de réduire le courant passant dans les balais et par conséquent atténuer le phénomène d'électro-érosion.It is thus possible to reduce the current passing through the brushes and therefore reduce the electro-erosion phenomenon.

Dans un exemple de mise en oeuvre de l'invention, l'ensemble porte-balais est réalisé à partir d'une pièce unique.In an example of implementation of the invention, the brush holder assembly is made from a single part.

Si on le souhaite, l'ensemble porte-balais est réalisé par moulage ou, en variante, de préférence par découpe et pliage d'une tôle.If desired, the brush holder assembly is produced by molding or, alternatively, preferably by cutting and folding a sheet metal.

Dans un autre exemple de mise en oeuvre de l'invention, l'ensemble porte-balais est réalisé à partir d'au moins deux pièces assemblées, par exemple par soudage ou collage, chaque pièce formant notamment l'une des cages de l'ensemble porte-balais.In another example of implementation of the invention, the brush holder assembly is made from at least two assembled parts, for example by welding or gluing, each part forming in particular one of the cages of the brush holder assembly.

Le cas échéant, l'ensemble porte-balais est agencé pour être monté sur le support par encliquetage ou par sertissage.Where applicable, the brush holder assembly is arranged to be mounted on the support by snap-fastening or crimping.

L'ensemble porte-balais peut être agencé de manière à ce que, après le montage sur le support, les deux cages sont disposées sensiblement de part et d'autre du support.The brush holder assembly can be arranged so that, after mounting on the support, the two cages are arranged substantially on either side of the support.

Dans un exemple de mise en oeuvre de l'invention, les deux cages de l'ensemble porte-balais sont reliées entre elles par une charnière.In an example of implementation of the invention, the two cages of the brush holder assembly are connected together by a hinge.

Si on le souhaite, les deux cages de l'ensemble porte-balais forment un logement commun pour recevoir les deux balais et, après le montage de l'ensemble porte-balais sur le support, les deux balais de cet ensemble porte-balais sont séparés l'un de l'autre par le support.If desired, the two cages of the brush holder assembly form a common housing to receive the two brushes and, after mounting the brush holder assembly on the support, the two brushes of this brush holder assembly are separated from each other by the support.

Les balais sont disposés en contact l'un de l'autre et de manière sensiblement alignée sur une droite parallèle à un axe de rotation du collecteur.The brushes are arranged in contact with each other and substantially aligned on a straight line parallel to an axis of rotation of the collector.

Grâce à l'invention, les balais disposés de manière jointive peuvent présenter un encombrement réduit, ce qui peut permettre d'avoir une machine relativement compacte.Thanks to the invention, the brushes arranged in a contiguous manner can have a reduced size, which can make it possible to have a relatively compact machine.

L' ensemble porte-balais est par exemple réalisé à partir d'une pièce unique.The brush holder assembly is for example made from a single piece.

En variante, l'ensemble porte-balais est réalisé à partir de deux pièces assemblées, par exemple par soudage ou collage, chaque pièce formant notamment l'une des cages de l'ensemble porte-balais.Alternatively, the brush holder assembly is made from two assembled parts, for example by welding or gluing, each part forming in particular one of the cages of the brush holder assembly.

Dans un exemple de mise en oeuvre de l'invention, le support comporte une couche électriquement conductrice intercalée entre deux couches électriquement isolantes.In an example of implementation of the invention, the support comprises an electrically conductive layer interposed between two electrically insulating layers.

De préférence chaque cage reçoit un ressort sur lequel s'applique le balai placé dans cette cage.Preferably each cage receives a spring on which the brush placed in this cage applies.

L'invention a encore pour objet un procédé pour fabriquer un démarreur de véhicule automobile tel défini ci-dessus, le procédé comportant les étapes suivantes :

  • monter l'ensemble porte-balais sur le support, puis
  • placer les balais dans les cages respectives.
The invention also relates to a method for manufacturing a motor vehicle starter as defined above, the method comprising the following steps:
  • mount the brush holder assembly on the support, then
  • place the brushes in the respective cages.

L'invention pourra être mieux comprise à la lecture de la description détaillée qui va suivre, d'exemples de mise en oeuvre non limitatifs de l'invention, et à l'examen du dessin annexé, sur lequel :

  • la figure 1 représente, schématiquement et partiellement, un démarreur conforme à un exemple de mise en oeuvre de l'invention,
  • les figures 2 à 6 représentent, schématiquement et partiellement, différents éléments d'un dispositif à balais conforme à un exemple de mise en oeuvre non revendiqué, pour équiper le démarreur de la figure1,
  • les figures 7 à 9 illustrent, schématiquement et partiellement, des porte-balais respectivement selon trois autres exemples de mise en oeuvre non revendiqués,
  • les figures 10 et 11 représentent, schématiquement et partiellement, un dispositif à balais selon un autre exemple de mise en œuvre non revendiqué
  • les figures 12 à 15 illustrent, schématiquement et partiellement, un dispositif à balais selon un exemple de mise en oeuvre de l'invention, et
  • les figures 16 à 19 représentent, schématiquement et partiellement, un dispositif à balais selon encore un autre exemple de mise en oeuvre de l'invention.
The invention can be better understood on reading the detailed description which follows, non-limiting examples of implementation of the invention, and on examining the appended drawing, in which:
  • there figure 1 represents, schematically and partially, a starter conforming to an example of implementation of the invention,
  • THE figures 2 to 6 represent, schematically and partially, different elements of a brushed device conforming to an unclaimed example of implementation, for equipping the starter with the figure 1 ,
  • THE figures 7 to 9 illustrate, schematically and partially, brush holders respectively according to three other unclaimed examples of implementation,
  • THE figures 10 And 11 represent, schematically and partially, a brush device according to another unclaimed example of implementation
  • THE figures 12 to 15 illustrate, schematically and partially, a brush device according to an example of implementation of the invention, and
  • THE figures 16 to 19 represent, schematically and partially, a brush device according to yet another example of implementation of the invention.

On a représenté sur la figure 1 un démarreur 1 pour moteur à combustion interne de véhicule automobile.We represented on the figure 1 a starter 1 for an internal combustion engine of a motor vehicle.

Ce démarreur 1 comprend, d'une part, un rotor 2, encore appelé induit, pouvant tourner autour d'un axe X, et d'autre part, un stator 3, encore appelé inducteur, autour du rotor 2.This starter 1 comprises, on the one hand, a rotor 2, also called an armature, which can rotate around an axis X, and on the other hand, a stator 3, also called an inductor, around the rotor 2.

Ce stator 3 comporte une culasse sur laquelle sont fixées une ou plusieurs pièces polaires 4 pour la mise en place d'un bobinage inducteur 5.This stator 3 comprises a yoke on which one or more pole pieces 4 are fixed for the installation of an inductor winding 5.

Le rotor 2 comporte un corps de rotor 7, et un bobinage d'induit 8 enroulé dans des encoches du corps de rotor 7.The rotor 2 comprises a rotor body 7, and an armature winding 8 wound in notches of the rotor body 7.

Ce bobinage d'induit 8 forme, de part et d'autre du corps de rotor 7, un chignon avant 9 et un chignon arrière 10.This armature winding 8 forms, on either side of the rotor body 7, a front bun 9 and a rear bun 10.

Le rotor 2 est pourvu, à l'arrière, d'un collecteur 12 comprenant une pluralité de pièces de contact connectées électriquement aux éléments conducteurs, formés dans l'exemple considéré par des fils du bobinage d'induit 8.The rotor 2 is provided, at the rear, with a collector 12 comprising a plurality of contact parts electrically connected to the conductive elements, formed in the example considered by wires of the armature winding 8.

Un groupe de balais 13 d'un dispositif à balais 50, représenté très schématiquement sur la figure 1, est prévu pour l'alimentation électrique du bobinage d'induit 8, l'un au moins des balais 13 étant relié à la masse du démarreur 1 et un autre au moins des balais 13 étant relié à un contacteur 17.A group of brushes 13 of a brush device 50, represented very schematically on the figure 1 , is provided for the electrical supply of the armature winding 8, at least one of the brushes 13 being connected to the ground of the starter 1 and at least another of the brushes 13 being connected to a contactor 17.

Les balais 13 viennent frotter sur le collecteur 12 lorsque le rotor 2 est en rotation.The brushes 13 rub on the collector 12 when the rotor 2 is rotating.

Les balais 13 sont réalisés par exemple à base de carbone.The brushes 13 are made for example from carbon.

Le dispositif à balais 50 sera décrit plus en détail ci-dessous.The brush device 50 will be described in more detail below.

Le démarreur 1 comporte en outre un lanceur 19 monté de manière coulissante sur un arbre d'entraînement 18 et pouvant être entraîné en rotation autour de l'axe X par le rotor 2.The starter 1 further comprises a launcher 19 slidably mounted on a drive shaft 18 and capable of being rotated around the axis X by the rotor 2.

Un ensemble réducteur de vitesses 20 peut être interposé entre le rotor 2 et l'arbre d'entraînement 18, de manière connue en soi.A speed reducer assembly 20 can be interposed between the rotor 2 and the drive shaft 18, in a manner known per se.

Le lanceur 19 comporte un élément d'entraînement formé par un pignon 21 et destiné à s'engager sur un organe d'entraînement 33 du moteur à combustion. Cet organe d'entraînement est par exemple une couronne dentée.The launcher 19 comprises a drive element formed by a pinion 21 and intended to engage on a drive member 33 of the combustion engine. This drive member is for example a toothed crown.

Le lanceur 19 comprend en outre une roue libre 22 et une rondelle poulie 23 définissant entre elles une gorge 24 pour recevoir l'extrémité 25 d'une fourchette 27.The launcher 19 further comprises a free wheel 22 and a pulley washer 23 defining between them a groove 24 to receive the end 25 of a fork 27.

Cette fourchette 27 est réalisée par exemple par moulage d'une matière plastique.This fork 27 is made for example by molding a plastic material.

La fourchette 27 est actionnée par le contacteur 17 pour déplacer le lanceur 19 par rapport à l'arbre d'entraînement 18, suivant l'axe X, entre une première position dans laquelle le lanceur 19 entraîne le moteur à combustion par l'intermédiaire du pignon 21, et une deuxième position dans laquelle le lanceur 19 est désengagé de la couronne dentée 33.The fork 27 is actuated by the contactor 17 to move the launcher 19 relative to the drive shaft 18, along the axis pinion 21, and a second position in which the launcher 19 is disengaged from the toothed ring 33.

Le contacteur 17 comprend une borne 29 reliée via un élément de liaison électrique, notamment un fil 30, à une alimentation électrique du véhicule telle qu'une batterie 26.The contactor 17 comprises a terminal 29 connected via an electrical connection element, in particular a wire 30, to a vehicle power supply such as a battery 26.

On va maintenant décrire plus en détails, en référence aux figures 2 à 6, un dispositif à balais 50 non revendiqué.We will now describe in more detail, with reference to the figures 2 to 6 , an unclaimed brush device 50.

Comme on peut le voir sur la figure 2, le dispositif 50 comporte un support 51 pourvu d'une plaque électriquement conductrice 52, par exemple réalisé en acier, et présentant une forme annulaire perpendiculaire à l'axe X.As can be seen on the figure 2 , the device 50 comprises a support 51 provided with an electrically conductive plate 52, for example made of steel, and having an annular shape perpendicular to the axis X.

La plaque 52 comporte, sur un côté 53, deux renfoncements 54 diamétralement opposés.The plate 52 comprises, on one side 53, two diametrically opposed recesses 54.

Chaque renfoncement 54 reçoit un insert isolant 55, réalisé par exemple en matière plastique thermodur.Each recess 54 receives an insulating insert 55, made for example of thermoset plastic material.

Cet insert 55 comprend deux orifices 57 permettant de le fixer sur la plaque 52 à l'aide de rivets.This insert 55 includes two holes 57 allowing it to be fixed on the plate 52 using rivets.

Dans l'exemple décrit, l'épaisseur de l'insert 55 est sensiblement égale à la profondeur du renfoncement 54.In the example described, the thickness of the insert 55 is substantially equal to the depth of the recess 54.

L'insert 55 sert au montage d'un ensemble porte-balais 60 sur le support 51.The insert 55 is used to mount a brush holder assembly 60 on the support 51.

Cet ensemble porte-balais 60 comporte deux cages 61 et 62 agencées chacune pour recevoir un balai 13.This brush holder assembly 60 comprises two cages 61 and 62 each arranged to receive a brush 13.

Ainsi le dispositif à balais 50 comprend quatre ensembles porte-balais 60 portant chacun une paire de balais 13.Thus the brush device 50 comprises four brush holder assemblies 60 each carrying a pair of brushes 13.

Deux des ensembles 60 sont montés sur le support 51 à l'aide d'inserts isolants 55, les balais 13 de ces ensembles étant alors reliés à une alimentation électrique.Two of the assemblies 60 are mounted on the support 51 using insulating inserts 55, the brushes 13 of these assemblies then being connected to a power supply.

Les deux autres ensembles 60 sont fixés directement sur la plaque conductrice 52, les balais de ces ensembles 60 étant alors, dans cet exemple, mis à la masse.The two other assemblies 60 are fixed directly to the conductive plate 52, the brushes of these assemblies 60 then being, in this example, grounded.

Dans l'exemple décrit, chaque ensemble porte-balais 60 est réalisé d'un seul tenant, notamment par découpe et pliage d'une tôle en acier.In the example described, each brush holder assembly 60 is made in one piece, in particular by cutting and folding a steel sheet.

Ainsi les cages 61 et 62 sont solidaires l'une de l'autre, ce qui permet de faciliter le montage de l'ensemble 60 soit sur l'insert isolant 55 soit sur la plaque 52.Thus the cages 61 and 62 are integral with each other, which makes it easier to mount the assembly 60 either on the insulating insert 55 or on the plate 52.

Comme on peut le voir notamment sur les figures 5 et 6, les deux cages 61 et 62 sont reliées entre elles par une charnière frontale 65.As we can see in particular on the figures 5 and 6 , the two cages 61 and 62 are connected together by a front hinge 65.

Avant mise en place sur le support 51, les cages 61 et 62 sont légèrement repoussées l'une de l'autre par action de la charnière 62.Before being placed on the support 51, the cages 61 and 62 are slightly pushed away from each other by the action of the hinge 62.

La charnière 62 est agencée pour s'engager sur un bord radialement intérieur 58 du support 51.The hinge 62 is arranged to engage on a radially inner edge 58 of the support 51.

Chaque cage 61 ; 62 comprend une paroi sensiblement cylindrique 67 d'axe radial Y perpendiculaire à l'axe X et présentant une section sensiblement rectangulaire.Each cage 61; 62 comprises a substantially cylindrical wall 67 with a radial axis Y perpendicular to the axis X and having a substantially rectangular section.

La section de la paroi 67 est choisie pour épouser sensiblement la forme du balai 13 correspondant.The section of the wall 67 is chosen to substantially match the shape of the corresponding brush 13.

Dans l'exemple décrit, la paroi 67 est fendue sur un côté et présente un renflement 69 sur un côté opposé pour le passage d'un ressort.In the example described, the wall 67 is split on one side and has a bulge 69 on an opposite side for the passage of a spring.

Les cages 61 et 62 sont ouvertes aux deux extrémités radiales.The cages 61 and 62 are open at both radial ends.

Chaque ensemble porte-balais 60 comprend sur un côté opposé à la charnière 65 deux pattes de sertissage 70, chacune se raccordant à une cage 61 ; 62 (voir notamment figure 5).Each brush holder assembly 60 comprises on a side opposite the hinge 65 two crimping lugs 70, each connecting to a cage 61; 62 (see in particular figure 5 ).

Afin de fixer l'ensemble porte-balais 60 sur l'insert 55, avant que cet insert 55 ne soit monté sur la plaque 52, cet ensemble 60 est placé sur cet insert 55 puis les cages 61 et 62 sont rapprochées l'une de l'autre grâce au pivotement permis par la charnière 65.In order to fix the brush holder assembly 60 on the insert 55, before this insert 55 is mounted on the plate 52, this assembly 60 is placed on this insert 55 then the cages 61 and 62 are brought together one by one. the other thanks to the pivoting allowed by the hinge 65.

Une fois les cages 61 et 62 plaquées sur l'insert 55, les pattes 70 sont rabattues sur un bord extérieur 59 de l'insert 55 (voir figures 3 et 4 notamment).Once the cages 61 and 62 are placed on the insert 55, the tabs 70 are folded onto an outer edge 59 of the insert 55 (see figures 3 and 4 notably).

L'ensemble porte-balais 60 est ainsi fixé sur l'insert 55.The brush holder assembly 60 is thus fixed on the insert 55.

Cet assemblage obtenu est ensuite posé et fixé sur la plaque 52, dans un renfoncement 54, par rivetage.This assembly obtained is then placed and fixed on the plate 52, in a recess 54, by riveting.

Le renfoncement 54 de la plaque 52 est pourvu d'un évidement 72 pour laisser passer la cage 62 (voir notamment figure 2).The recess 54 of the plate 52 is provided with a recess 72 to allow the cage 62 to pass (see in particular figure 2 ).

Un autre des ensembles porte-balais 60 est fixé directement sur la plaque 52 de manière sensiblement similaire au cas d'une fixation sur l'insert 55.Another of the brush holder assemblies 60 is fixed directly on the plate 52 in a manner substantially similar to the case of fixing on the insert 55.

A cet effet, la plaque 52 comprend une fente 73 pour le passage des pattes de sertissage 70 (voir figures 2 et 3 notamment).For this purpose, the plate 52 includes a slot 73 for the passage of the crimping lugs 70 (see figures 2 and 3 notably).

Comme on peut le constater, les ensembles porte-balais 60 peuvent être fixés aisément sur le support 51.As can be seen, the brush holder assemblies 60 can be easily fixed on the support 51.

Dans l'exemple de mise en oeuvre qui vient d'être décrit, les cages 61 et 62 définissent des compartiments séparés pour les balais.In the implementation example which has just been described, the cages 61 and 62 define separate compartments for the brushes.

En variante non revendiqué, comme illustré sur la figure 7, le dispositif à balais 50 peut comporter un ensemble porte-balais 80 qui présente initialement un logement commun 81 pour les deux balais 13 à mettre en place.Alternatively not claimed, as illustrated in the Figure 7 , the brush device 50 may include a brush holder assembly 80 which initially has a common housing 81 for the two brushes 13 to be put in place.

Après montage de l'ensemble 80 sur un support 85, les balais 13 sont séparés l'un de l'autre par ce support 85.After mounting the assembly 80 on a support 85, the brushes 13 are separated from each other by this support 85.

Celui-ci comprend une couche conductrice 87 intercalée entre deux couches isolantes extérieures 86.This comprises a conductive layer 87 interposed between two exterior insulating layers 86.

L'ensemble porte-balais 80 comporte, sur un côté, deux oreilles 88 à riveter sur le support 85.The brush holder assembly 80 includes, on one side, two lugs 88 to be riveted onto the support 85.

L'ensemble 80 comporte également des fentes 89, sur chaque côté, permettant d'insérer par coulissement, dans le plan du support 85, cet ensemble 80 sur ce support 85.The assembly 80 also includes slots 89, on each side, allowing this assembly 80 to be inserted by sliding, in the plane of the support 85, onto this support 85.

L'ensemble 80 comporte en outre, à l'arrière, des éléments d'encliquetage 90 tels que deux pattes élastiquement déformables, aptes à s'appliquer sur un bord arrière 91 du support 85 pour empêcher le retrait de cet ensemble 80.The assembly 80 further comprises, at the rear, latching elements 90 such as two elastically deformable tabs, capable of being applied to a rear edge 91 of the support 85 to prevent the removal of this assembly 80.

Dans l'exemple décrit, l'ensemble 80 est réalisé d'un seul tenant.In the example described, the assembly 80 is made in one piece.

On a représenté sur la figure 8 un ensemble porte-balais 95 non revendiqué se différenciant de l'ensemble 80 précédemment décrit par le fait qu'il comprend deux ergots 96 agencés pour s'appliquer de part et d'autre du support 85 afin de favoriser la stabilité du montage dans le plan du support 85.We represented on the figure 8 an unclaimed brush holder assembly 95 differing from the assembly 80 previously described by the fact that it comprises two lugs 96 arranged to apply on either side of the support 85 in order to promote the stability of the assembly in the support plan 85.

Dans les exemples décrits ci-dessus, l'ensemble porte-balais comporte deux pattes d'encliquetage 90.In the examples described above, the brush holder assembly comprises two latching tabs 90.

En variante non revendiqué, l'ensemble porte-balais peut comporter une seule patte d'encliquetage 90, comme illustré sur la figure 9.As an unclaimed variant, the brush holder assembly may comprise a single latch tab 90, as illustrated in the Figure 9 .

Dans les exemples de mise en oeuvre précédents, les cages 61 et 62 de l'ensemble porte-balais sont disposées de part et d'autre du support 51 ou 85.In the preceding examples of implementation, the cages 61 and 62 of the brush holder assembly are arranged on either side of the support 51 or 85.

On a représenté sur les figures 10 et 11 un dispositif à balais 100 non revendiqué comportant un support 101 sur lequel sont disposés quatre porte-balais 102.We represented on the figures 10 And 11 an unclaimed brush device 100 comprising a support 101 on which four brush holders 102 are arranged.

Chaque porte-balais 102 comporte deux cages 104 et 105 pour des balais 13.Each brush holder 102 has two cages 104 and 105 for brushes 13.

Ces cages 104 et 105 sont disposées d'un même côté du support 101.These cages 104 and 105 are arranged on the same side of the support 101.

Ces ensembles 102 sont dépourvus de charnière frontale.These assemblies 102 do not have a front hinge.

Chaque ensemble porte-balais 102 comporte une paroi 107 présentant un profil sensiblement en S lorsqu'elle est observée suivant une direction radiale, de manière à définir les deux cages 104 et 105.Each brush holder assembly 102 comprises a wall 107 having a substantially S-shaped profile when observed in a radial direction, so as to define the two cages 104 and 105.

Ainsi une seule cloison 108 sépare les deux balais 13 (voir figure 11).Thus a single partition 108 separates the two brushes 13 (see Figure 11 ).

Chaque cage 104 ; 105 est fermée à l'arrière par un obturateur 110 fixé sur la cage 104 ; 105 correspondante par coopération d'éléments de fixation 111 et 112.Each cage 104; 105 is closed at the rear by a shutter 110 fixed on the cage 104; 105 corresponding by cooperation of fixing elements 111 and 112.

Ces éléments comporte par exemple une patte 111 apte à s'engager dans une orifice 113 de la cage 104 ; 105.These elements include for example a tab 111 capable of engaging in an orifice 113 of the cage 104; 105.

Un ressort 115 est placé dans le fond de chaque cage 104 ; 105, contre l'obturateur 110.A spring 115 is placed at the bottom of each cage 104; 105, against the shutter 110.

Ce ressort 115 sert à exercer sur le balai 13 associé, une force tendant à l'appliquer contre le collecteur 12 du démarreur.This spring 115 serves to exert on the associated brush 13 a force tending to apply it against the collector 12 of the starter.

L'ensemble porte-balais 102 est fixé sur le support par exemple par rabattement de pattes ou languettes de cet ensemble sur le support.The brush holder assembly 102 is fixed on the support for example by folding the tabs or tabs of this assembly onto the support.

Dans les exemples ci-dessus, les balais 13 sont séparés l'un de l'autre.In the examples above, the brushes 13 are separated from each other.

On ne sort pas du cadre de la présente invention lorsque les balais 13 sont en contact l'un de l'autre.We do not depart from the scope of the present invention when the brushes 13 are in contact with each other.

Comme illustré sur les figures 12 à 15, le support 85 comporte un évidement 120 et recevoir un ensemble porte- balais 130 pourvu de cages 131 et 132 disposées de part et d'autre du support 85.As illustrated on the figures 12 to 15 , the support 85 has a recess 120 and receives a brush holder assembly 130 provided with cages 131 and 132 arranged on either side of the support 85.

Les cages 131 et 132 communiquent entre elles à travers l'évidement 120 de sorte que les balais 13 placés dans ces cages soient jointifs.The cages 131 and 132 communicate with each other through the recess 120 so that the brushes 13 placed in these cages are contiguous.

L'ensemble 130 comporte deux oreilles 134 permettant de riveter cet ensemble 130 sur le support 85.The assembly 130 includes two lugs 134 allowing this assembly 130 to be riveted onto the support 85.

L'ensemble 130 comprend en outre deux pattes latérales de sertissage 135 agencées pour être serties sur le support 85, sur ses deux faces opposées.The assembly 130 further comprises two side crimping lugs 135 arranged to be crimped onto the support 85, on its two opposite faces.

La figure 15 montre les pattes 135 en position rabattue.There Figure 15 shows the legs 135 in the folded position.

L'ensemble 130 est réalisé d'un seul tenant.The assembly 130 is made in one piece.

On a représenté sur les figures 16 à 19 une variante de l'exemple de mise en oeuvre précédent.We represented on the figures 16 to 19 a variation of the previous implementation example.

L'ensemble porte-balais 140 comporte, outre les oreilles de rivetage 134, une butée formée sur une languette frontale repliée 141 de l'ensemble 140.The brush holder assembly 140 comprises, in addition to the riveting lugs 134, a stop formed on a folded front tongue 141 of the assembly 140.

Deux volets de maintien 142 sont prévus sur l'ensemble 140 pour s'appliquer sur deux côtés opposés du support 85.Two retaining flaps 142 are provided on the assembly 140 to apply on two opposite sides of the support 85.

L'ensemble porte-balais 140 comprend en outre des pattes d'encliquetage 145, à l'arrière, pour s'engager sur des appuis 146 du support 85 pour immobiliser, en liaison avec l'effet de butée à l'avant, l'ensemble 140 sur le support 85.The brush holder assembly 140 further comprises latching tabs 145, at the rear, to engage on supports 146 of the support 85 to immobilize, in connection with the stop effect at the front, the assembly 140 on support 85.

Claims (10)

  1. Motor vehicle starter, having:
    • a rotor (2), which is able to rotate about an axis of rotation (X),
    • a stator (3), which is around the rotor (2),
    • a starter drive assembly (19) mounted in a sliding manner on a drive shaft (18) and able to be driven in rotation about the axis of rotation (X) by the rotor (2), and
    • a brush device,
    the device having:
    - at least two brushes (13) arranged to rub on a commutator (12) of the starter during the operation thereof, these brushes being disposed in a substantially aligned manner on a straight line parallel to an axis of rotation (X) of the commutator,
    - a brush-holder assembly (130), and
    - a support (85) on which the brush-holder assembly is mounted, the starter being characterized in that the brush-holder assembly comprises at least two cages (131, 132) each arranged to receive one of said brushes, in that the brush-holder assembly is arranged such that, after the mounting on the support, the two cages (131, 132) are disposed substantially on either side of the support, wherein the support has an annular shape perpendicular to the axis of rotation (X),
    and in that the support has a recess (120) between the two cages of the brush-holder assembly such that the brushes come into contact with one another through the recess (120).
  2. Starter according to the preceding claim, characterized in that the brush-holder assembly (130) is made from a single piece.
  3. Starter according to Claim 1, characterized in that the brush-holder assembly is made from two pieces that are joined together, for example by welding or adhesive bonding, each piece forming one of the cages of the brush-holder assembly.
  4. Starter according to any one of the preceding claims, characterized in that the brush-holder assembly is arranged to be mounted on the support by snap-fastening or by crimping.
  5. Starter according to any one of the preceding claims, characterized in that the brush-holder assembly (60) has at least two cages (60, 61) joined to one another.
  6. Starter according to any one of the preceding claims, characterized in that the brush-holder assembly is produced by moulding or by cutting and bending a metal sheet.
  7. Starter according to any one of the preceding claims, characterized in that the two cages of the brush-holder assembly are connected to each other by a hinge (65) .
  8. Starter according to any one of the preceding claims, characterized in that the support has an electrically conductive layer (87) interposed between two electrically insulating layers (86).
  9. Starter according to any one of the preceding claims, characterized in that each cage receives at least one spring (115) on which the brush (13) placed in this cage presses.
  10. Method for manufacturing a motor vehicle starter as defined in any one of Claims 1 to 9, the method involving the following steps:
    - mounting the brush-holder assembly on the support, then
    - placing the brushes in the respective cages.
EP09784488.0A 2008-07-24 2009-07-09 Brush device for motor vehicle starter Active EP2313951B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0855053A FR2934435B1 (en) 2008-07-24 2008-07-24 BRUSH DEVICE FOR MOTOR VEHICLE STARTER
FR0855060A FR2934436B1 (en) 2008-07-24 2008-07-24 BRUSH DEVICE FOR MOTOR VEHICLE STARTER
PCT/FR2009/051357 WO2010010270A2 (en) 2008-07-24 2009-07-09 Brush device for motor vehicle starter

Publications (3)

Publication Number Publication Date
EP2313951A2 EP2313951A2 (en) 2011-04-27
EP2313951B1 true EP2313951B1 (en) 2024-02-28
EP2313951C0 EP2313951C0 (en) 2024-02-28

Family

ID=41567231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09784488.0A Active EP2313951B1 (en) 2008-07-24 2009-07-09 Brush device for motor vehicle starter

Country Status (3)

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EP (1) EP2313951B1 (en)
CN (1) CN102113186B (en)
WO (1) WO2010010270A2 (en)

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
CN106782964B (en) * 2017-01-21 2019-01-18 东莞市钺河自动化科技有限公司 A kind of automatic assembling of potentiometer
FR3069982A1 (en) * 2017-08-04 2019-02-08 Valeo Equipements Electriques Moteur BROOM DOOR FOR MOTOR VEHICLE STARTER
DE102021122065B3 (en) 2021-08-26 2022-11-17 Audi Aktiengesellschaft Brush holder for holding at least two brushes for a sliding contact arrangement, electrical machine and motor vehicle
WO2023210091A1 (en) * 2022-04-28 2023-11-02 株式会社アイシン Wound-field rotating electric machine and power feeding device

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US4114061A (en) * 1977-03-07 1978-09-12 Eltra Corporation Brush cage for a dynamoelectric machine
EP1843451A1 (en) * 2006-04-03 2007-10-10 Valeo Equipements Electriques Moteur Blade-holding device for a rotating electrical machine

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US1954910A (en) * 1929-12-31 1934-04-17 Eclipse Aviat Corp Brush mounting for electrical machines
IT8553611V0 (en) * 1985-07-19 1985-07-19 Magneti Marelli Spa IMPROVEMENTS IN BRUSH HOLDERS FOR ELECTRIC COLLECTOR MACHINES PARTICULARLY FOR STARTER ENGINES
JPH0318658U (en) * 1989-06-28 1991-02-25
US5731650A (en) * 1994-11-14 1998-03-24 Lucas Aerospace Power Equipment Corp. Dynamoelectric machine with brush wear sensor
US5753992A (en) * 1996-11-07 1998-05-19 Delco Remy America Inc Single piece brush fixture for dynamoelectric machine
US6909218B2 (en) * 2003-02-26 2005-06-21 Black & Decker Inc. End cap and brush box assembly
FR2858124B1 (en) * 2003-07-23 2005-11-18 Valeo Embrayages MOTOR MOTOR BRUSH HOLDER, ELECTRIC MOTOR AND ACTUATOR
DE102004062840B3 (en) * 2004-12-27 2006-10-05 Hilti Ag Brush base plate with brush guide plate

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US4114061A (en) * 1977-03-07 1978-09-12 Eltra Corporation Brush cage for a dynamoelectric machine
EP1843451A1 (en) * 2006-04-03 2007-10-10 Valeo Equipements Electriques Moteur Blade-holding device for a rotating electrical machine

Also Published As

Publication number Publication date
WO2010010270A2 (en) 2010-01-28
WO2010010270A3 (en) 2010-03-25
EP2313951C0 (en) 2024-02-28
CN102113186B (en) 2014-06-25
EP2313951A2 (en) 2011-04-27
CN102113186A (en) 2011-06-29

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