EP0859393A1 - Starter contactor for motor vehicule having perfectionate means comprising a centering stationary core - Google Patents

Starter contactor for motor vehicule having perfectionate means comprising a centering stationary core Download PDF

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Publication number
EP0859393A1
EP0859393A1 EP98101170A EP98101170A EP0859393A1 EP 0859393 A1 EP0859393 A1 EP 0859393A1 EP 98101170 A EP98101170 A EP 98101170A EP 98101170 A EP98101170 A EP 98101170A EP 0859393 A1 EP0859393 A1 EP 0859393A1
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EP
European Patent Office
Prior art keywords
core
coil
stud
fixed core
contactor
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.)
Granted
Application number
EP98101170A
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German (de)
French (fr)
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EP0859393B1 (en
Inventor
Jean-François Quentric
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Valeo Equipements Electriques Moteur SAS
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Valeo Equipements Electriques Moteur SAS
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Publication of EP0859393A1 publication Critical patent/EP0859393A1/en
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Publication of EP0859393B1 publication Critical patent/EP0859393B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/021—Bases; Casings; Covers structurally combining a relay and an electronic component, e.g. varistor, RC circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles

Definitions

  • the invention relates to a contactor for a starter of motor vehicle comprising improved means of centering of a fixed core.
  • the invention relates more particularly to a contactor for a motor vehicle starter, of the type having a movable magnetic core which moves axially under the effect of a magnetic field created by a coil comprising at least one electrical conductor wound around a coil body, and of the type having a fixed magnetic core which extends transversely to a front axial end of the winding.
  • the coil body defines a cylindrical bore inside which the core moves mobile.
  • the fixed core comprises essentially a front transverse wall and an axial section which extends inside the bore delimited by the body of coil, in particular to allow centering of the core by relative to the axis of the magnetic field created by the winding.
  • contactors for starter comprising a fixed core produced in the form of a particularly simple and economical cross plate to produce.
  • Such flat cores are frequently used in association with electronic control circuits the power supply of the contactor which allow to control the the better the magnetic field created by the coil, and so control the movement of the mobile core in the contactor.
  • the fixed core is generally crossed by an axial control rod which is integral in translation with the mobile core and which controls the movements of a plate of contact intended to electrically connect two fixed terminals of the contactor, one of which is connected to a storage battery of the vehicle and the other of which powers the starter motor.
  • the fixed core is therefore provided with a central bore for the passage of the rod and it is necessary to respect a good coaxiality between the central bore of the fixed core and the bore of the coil body so as not to have to plan too much radial clearance between the control rod and the corresponding bore of the core.
  • the object of the invention is therefore to propose new means for centering the core fixed relative to the coil body which allow the use of a flat core.
  • the invention provides a starter for motor vehicle, of the type comprising a magnetic core mobile which moves axially under the effect of a field magnetic created by a winding comprising at least one electrical conductor wound around a coil body, and type with a fixed magnetic core which extends transversely to a front axial end of the winding, characterized in that the coil body has a series of studs that extend axially forward from the end axial front of the coil body, and which are received in corresponding centering holes arranged in the fixed core.
  • FIG. 1 shows a contactor 10 for an electric starter for a motor vehicle.
  • Contactor 10 comprises a cylindrical housing 12 of axis A1 inside which is housed a coil 14 which is wound around a body of coil 16 of axis A1.
  • the winding 14 is constituted by the winding of at least one wire 20 conducting electricity around a wall cylindrical 18 of the coil body 16, between two flanges transverse annular front 22 and rear 24 which delimit axially winding 14.
  • the cylindrical wall 18 of the coil body 16 defines a central bore 26 in which a movable core (not shown) moves along the A1 axis under the effect of a field magnetic induced by the winding 14 when it is traversed by an electric current.
  • Field lines of the magnetic field created by the winding 14 close in particular thanks to the presence of a fixed magnetic core 28 which is arranged at the front winding 14.
  • the core fixed magnetic 28 is produced in the form of a plate annular which is arranged transversely, and which is in abutment axially backwards against a front face 30 of the flange front 22 of the coil body 16.
  • the displacements of the mobile core serve to cause the displacements in translation along the axis A1 of an axial rod control 32 which extends through a central bore 34 of the fixed core for pressing on a contact plate 38 against two terminals 40, 42 arranged in a front cover 44 of the contactor.
  • the contactor 10 includes improved means for ensuring good coaxiality between the coil body 16 and the core fixed magnetic 28, in particular with a view to perfectly aligning the central bore 26, delimited by the cylindrical wall 18 of the coil body 16, and the central bore 34 of the core 28.
  • the coil body 16 comprises a series cylindrical pads 46 which extend axially forward from the front face 30 of the front flange 22 of the coil body 16.
  • the studs 46 three in number and angularly distributed at 120 ° around the axis A1, are received in holes correspondents 48 drilled in the fixed core 28.
  • the diameter of the orifices 48 is slightly greater than that of the pads 46 so that the pads 46 do not cooperate with the orifices 48 only by a portion of their lateral surface which is turned towards the axis A1. This ensures a optimal accuracy of relative centering or coaxiality between the coil body 16 and the fixed core 28, in particular avoiding any hyperstatic connection between the two elements.
  • the orifices 48 open axially on either side of the core fixed 28 and the pads 46 extend forwards beyond a front face 50 of the fixed core 28.
  • the pads 46 can form support points for a printed circuit board 52 which is arranged transversely in the contactor 10, between the fixed core 28 and the contact plate 38, and which carries components electronic control and regulation of electric current traversing the winding 14.
  • the plate 52 of annular shape, is thus supported axially rearwards against the front end of the studs 46.
  • two of the pads 46 are hollow, i.e. they open axially towards front and axially backwards in the transverse face rear 54 of the front flank 22 of the coil body 16.
  • the studs 46 thus provide a passage through the fixed core 28 for an electrical conductor 20 of the winding 14.
  • means for connecting the conductor with the printed circuit of the plate 52 are arranged opposite the hollow stud 46 so that the conductor 20 can be directly connected to the control components.
  • the plate 52 is thus provided with a grommet connection 56 which comprises an axial cylindrical barrel 58 engaged through a hole 59 in the plate 52.
  • the barrel 58 has, at its rear axial end, a conical collar which is intended to be clamped axially between the front end of the pad 46 and a rear face of the plate 52.
  • the end of the conductor 20 which extends inside the pad 46 is also received in the barrel 58 of the eyelet 56 which extends the stud axially hollow 46.
  • the conductor is then connected to the barrel, for example by welding or crimping, so as to ensure on the one hand the electrical connection between the winding 14 and the circuit control, and secondly to ensure the mechanical strength of the eyelet and the plate 52 pressing against the stud 46.
  • the pads 46 which are hollow are provided with a slot 60 which opens radially outwards and which extends axially over the entire length of the stud 46 and the front flange 22 of the coil body 16.

Abstract

The contactor has axial lugs (46) on a coil former to engage coaxially, on moving axially in external field, centring holes (48) in a plate (28) which forms a fixed magnetic core. One centring hole at least reaches the front surface (50) of the plate and the corresponding lug extends beyond this front surface into the space beyond to support a printed circuit, carried on a p.c.b. (52). This extended lug is hollow to allow the passage of a conducting wire (20) from the coil to cross the plate. The coil (14) lies in a cylindrical former (16) and the connecting wire is placed in a passage in the hollow lug by means of a radial slot extending from the exterior towards the interior along the length of the lug and across the former wall. The front surface of the lug meets a metallic eyelet in the p.c.b. so that the conducting wire passes through its hole (59) and is connected to the eyelet.

Description

L'invention concerne un contacteur pour un démarreur de véhicule automobile comportant des moyens perfectionnés de centrage d'un noyau fixe.The invention relates to a contactor for a starter of motor vehicle comprising improved means of centering of a fixed core.

L'invention concerne plus particulièrement un contacteur pour un démarreur de véhicule automobile, du type comportant un noyau magnétique mobile qui se déplace axialement sous l'effet d'un champ magnétique créé par un bobinage comportant au moins un conducteur électrique enroulé autour d'un corps de bobine, et du type comportant un noyau magnétique fixe qui s'étend transversalement à une extrémité axiale avant du bobinage.The invention relates more particularly to a contactor for a motor vehicle starter, of the type having a movable magnetic core which moves axially under the effect of a magnetic field created by a coil comprising at least one electrical conductor wound around a coil body, and of the type having a fixed magnetic core which extends transversely to a front axial end of the winding.

De manière connue, le corps de bobine délimite un alésage cylindrique à l'intérieur duquel se déplace le noyau mobile.In known manner, the coil body defines a cylindrical bore inside which the core moves mobile.

Selon une conception classique, le noyau fixe comporte essentiellement une paroi transversale avant et un tronçon axial qui s'étend à l'intérieur de l'alésage délimité par le corps de bobine, notamment pour permettre le centrage du noyau par rapport à l'axe du champ magnétique créé par le bobinage.According to a conventional design, the fixed core comprises essentially a front transverse wall and an axial section which extends inside the bore delimited by the body of coil, in particular to allow centering of the core by relative to the axis of the magnetic field created by the winding.

Toutefois, une telle conception du noyau fixe lui confère des formes géométriques relativement complexes qui en augmentent de manière importante le coût de revient.However, such a fixed core design gives relatively complex geometric shapes which significantly increase the cost price.

Aussi, il a été proposé de réaliser des contacteurs de démarreur comportant un noyau fixe réalisé sous la forme d'une plaque transversale particulièrement simple et économique à produire. De tels noyaux plats sont fréquemment utilisés en association avec des circuits électroniques de commande de l'alimentation du contacteur qui permettent de maítriser au mieux le champ magnétique créé par la bobine, et ainsi de maítriser le déplacement du noyau mobile dans le contacteur.Also, it has been proposed to make contactors for starter comprising a fixed core produced in the form of a particularly simple and economical cross plate to produce. Such flat cores are frequently used in association with electronic control circuits the power supply of the contactor which allow to control the the better the magnetic field created by the coil, and so control the movement of the mobile core in the contactor.

Toutefois, l'utilisation de tels noyaux fixes pose le problème de leur centrage par rapport à l'axe du corps de bobine et de l'alésage déterminé par ce dernier.However, the use of such fixed cores poses the problem of centering them with respect to the axis of the coil body and the bore determined by the latter.

En effet, le noyau fixe est généralement traversé par une tige de commande axiale qui est solidaire en translation du noyau mobile et qui commande les déplacements d'une plaque de contact destinée à relier électriquement deux bornes fixes du contacteur dont l'une est reliée à une batterie d'accumulateurs du véhicule et dont l'autre alimente le moteur du démarreur. Indeed, the fixed core is generally crossed by an axial control rod which is integral in translation with the mobile core and which controls the movements of a plate of contact intended to electrically connect two fixed terminals of the contactor, one of which is connected to a storage battery of the vehicle and the other of which powers the starter motor.

Le noyau fixe est donc muni d'un perçage central pour le passage de la tige et il est nécessaire de respecter une bonne coaxialité entre le perçage central du noyau fixe et l'alésage du corps de bobine pour ne pas être obligé de prévoir un jeu radial trop important entre la tige de commande et l'alésage correspondant du noyau.The fixed core is therefore provided with a central bore for the passage of the rod and it is necessary to respect a good coaxiality between the central bore of the fixed core and the bore of the coil body so as not to have to plan too much radial clearance between the control rod and the corresponding bore of the core.

L'invention a donc pour but de proposer de nouveaux moyens de centrage du noyau fixe par rapport au corps de bobine qui permettent l'utilisation d'un noyau plat.The object of the invention is therefore to propose new means for centering the core fixed relative to the coil body which allow the use of a flat core.

Dans ce but, l'invention propose un démarreur de véhicule automobile, du type comportant un noyau magnétique mobile qui se déplace axialement sous l'effet d'un champ magnétique créé par un bobinage comportant au moins un conducteur électrique enroulé autour d'un corps de bobine, et du type comportant un noyau magnétique fixe qui s'étend transversalement à une extrémité axiale avant du bobinage, caractérisé en ce que le corps de bobine comporte une série de plots qui s'étendent axialement vers l'avant depuis l'extrémité axiale avant du corps de bobine, et qui sont reçus dans des orifices de centrage correspondants aménagés dans le noyau fixe.To this end, the invention provides a starter for motor vehicle, of the type comprising a magnetic core mobile which moves axially under the effect of a field magnetic created by a winding comprising at least one electrical conductor wound around a coil body, and type with a fixed magnetic core which extends transversely to a front axial end of the winding, characterized in that the coil body has a series of studs that extend axially forward from the end axial front of the coil body, and which are received in corresponding centering holes arranged in the fixed core.

Selon d'autres caractéristiques de l'invention :

  • les plots assurent une coaxialité entre le noyau fixe et le corps de bobine;
  • le noyau fixe est réalisé sous la forme d'une plaque;
  • l'un au moins des orifices de centrage du noyau fixe débouche dans une face avant du noyau, et le plot correspondant débouche dans un espace du contacteur délimité à l'avant du noyau fixe;
  • le démarreur comporte un circuit électronique de commande qui est porté par une plaque à circuit imprimé agencée dans le contacteur, en avant du noyau fixe, et le plot qui débouche en avant du noyau fixe forme une surface d'appui pour la plaque;
  • le plot du corps de bobine qui débouche en avant du noyau fixe est creux, et le plot forme un passage axial au travers du noyau fixe pour un conducteur électrique du bobinage;
  • le bobinage est enroulé autour d'une paroi cylindrique du corps de bobine, entre deux parois transversales avant et arrière, les plots s'étendent depuis une face avant de la paroi transversale avant, et la paroi transversale avant est percée dans le prolongement axial du plot creux pour permettre le passage du conducteur électrique;
  • le conducteur peut être engagé dans le plot creux radialement de l'extérieur vers l'intérieur par une fente radiale qui s'étend sur la longueur du plot et dans la paroi transversale avant;
  • la plaque à circuit imprimé comporte une perforation qui est prévue pour le passage axial du conducteur, et qui est munie d'un oeillet métallique pour le raccordement électrique du conducteur au circuit imprimé, et le conducteur est fixé sur l'oeillet de telle manière que l'oeillet de la plaque est en appui contre une extrémité avant du plot ;
  • le corps de bobine comporte trois plots de centrage cylindriques répartis angulairement de manière régulière, les orifices de centrage du noyau fixe sont de diamètre supérieur aux plots, et les plots coopèrent avec les orifices correspondants par une portion de leur surface latérale qui est agencée radialement vers l'intérieur par rapport à l'axe du corps de bobine.
According to other characteristics of the invention:
  • the pads provide coaxiality between the fixed core and the coil body;
  • the fixed core is made in the form of a plate;
  • at least one of the centering orifices of the fixed core opens into a front face of the core, and the corresponding stud opens into a space of the contactor defined at the front of the fixed core;
  • the starter comprises an electronic control circuit which is carried by a printed circuit board arranged in the contactor, in front of the fixed core, and the stud which opens out in front of the fixed core forms a bearing surface for the plate;
  • the stud of the coil body which opens in front of the fixed core is hollow, and the stud forms an axial passage through the fixed core for an electrical conductor of the winding;
  • the winding is wound around a cylindrical wall of the coil body, between two front and rear transverse walls, the studs extend from a front face of the front transverse wall, and the front transverse wall is pierced in the axial extension of the hollow stud to allow passage of the electrical conductor;
  • the conductor can be engaged in the hollow stud radially from the outside towards the inside by a radial slot which extends over the length of the stud and in the front transverse wall;
  • the printed circuit board has a perforation which is provided for the axial passage of the conductor, and which is provided with a metal eyelet for the electrical connection of the conductor to the printed circuit, and the conductor is fixed on the eyelet so that the eyelet of the plate bears against a front end of the stud;
  • the coil body has three cylindrical centering pads distributed angularly in a regular manner, the centering holes of the fixed core are of diameter greater than the pads, and the pads cooperate with the corresponding holes by a portion of their lateral surface which is arranged radially towards the interior with respect to the axis of the coil body.

D'autres caractéristiques et avantages de l'invention apparaítront à la lecture de la description détaillée qui suit pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels

  • la figure 1 est une vue partielle en section axiale d'un contacteur de démarreur conforme aux enseignements de l'invention ;
  • la figure 2 est une vue partielle avec arrachements, selon la direction axiale, du corps de bobine, du noyau fixe et de la plaque à circuit imprimé ; et
  • la figure 3 est une vue en perspective éclatée des éléments de la figure 2.
Other characteristics and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the accompanying drawings in which
  • Figure 1 is a partial view in axial section of a starter switch according to the teachings of the invention;
  • Figure 2 is a partial view with cutaway, in the axial direction, of the coil body, the fixed core and the printed circuit board; and
  • FIG. 3 is an exploded perspective view of the elements of FIG. 2.

On a représenté sur la figure 1 un contacteur 10 pour un démarreur électrique de véhicule automobile. Le contacteur 10 comporte un boítier cylindrique 12 d'axe A1 à l'intérieur duquel est logé un bobinage 14 qui est enroulé autour d'un corps de bobine 16 d'axe A1.FIG. 1 shows a contactor 10 for an electric starter for a motor vehicle. Contactor 10 comprises a cylindrical housing 12 of axis A1 inside which is housed a coil 14 which is wound around a body of coil 16 of axis A1.

Le bobinage 14 est constitué par l'enroulement d'au moins un fil 20 conducteur de l'électricité autour d'une paroi cylindrique 18 du corps de bobine 16, entre deux flasques transversaux annulaires avant 22 et arrière 24 qui délimitent axialement le bobinage 14.The winding 14 is constituted by the winding of at least one wire 20 conducting electricity around a wall cylindrical 18 of the coil body 16, between two flanges transverse annular front 22 and rear 24 which delimit axially winding 14.

La paroi cylindrique 18 du corps de bobine 16 délimite un alésage central 26 dans lequel un noyau mobile (non représenté) se déplace selon l'axe A1 sous l'effet d'un champ magnétique induit par le bobinage 14 lorsqu'il est parcouru par un courant électrique. Les lignes de champ du champ magnétique créé par le bobinage 14 se referment notamment grâce à la présence d'un noyau magnétique fixe 28 qui est agencé à l'avant du bobinage 14.The cylindrical wall 18 of the coil body 16 defines a central bore 26 in which a movable core (not shown) moves along the A1 axis under the effect of a field magnetic induced by the winding 14 when it is traversed by an electric current. Field lines of the magnetic field created by the winding 14 close in particular thanks to the presence of a fixed magnetic core 28 which is arranged at the front winding 14.

Dans l'exemple de réalisation de l'invention, le noyau magnétique fixe 28 est réalisé sous la forme d'une plaque annulaire qui est agencée transversalement, et qui est en appui axialement vers l'arrière contre une face avant 30 du flasque avant 22 du corps de bobine 16.In the embodiment of the invention, the core fixed magnetic 28 is produced in the form of a plate annular which is arranged transversely, and which is in abutment axially backwards against a front face 30 of the flange front 22 of the coil body 16.

Les déplacements du noyau mobile servent à provoquer les déplacements en translation selon l'axe A1 d'une tige axiale de commande 32 qui s'étend au travers d'un perçage central 34 du noyau fixe pour solliciter une plaque de contact 38 en appui contre deux bornes 40, 42 agencées dans un capot avant 44 du contacteur.The displacements of the mobile core serve to cause the displacements in translation along the axis A1 of an axial rod control 32 which extends through a central bore 34 of the fixed core for pressing on a contact plate 38 against two terminals 40, 42 arranged in a front cover 44 of the contactor.

Conformément aux enseignements de l'invention, le contacteur 10 comporte des moyens perfectionnés pour assurer une bonne coaxialité entre le corps de bobine 16 et le noyau magnétique fixe 28, notamment en vue d'aligner parfaitement l'alésage central 26, délimité par la paroi cylindrique 18 du corps de bobine 16, et le perçage central 34 du noyau 28.In accordance with the teachings of the invention, the contactor 10 includes improved means for ensuring good coaxiality between the coil body 16 and the core fixed magnetic 28, in particular with a view to perfectly aligning the central bore 26, delimited by the cylindrical wall 18 of the coil body 16, and the central bore 34 of the core 28.

A cet effet, le corps de bobine 16 comporte une série de plots cylindriques 46 qui s'étendent axialement vers l'avant depuis la face avant 30 du flasque avant 22 du corps de bobine 16.To this end, the coil body 16 comprises a series cylindrical pads 46 which extend axially forward from the front face 30 of the front flange 22 of the coil body 16.

Les plots 46, au nombre de trois et répartis angulairement à 120° autour de l'axe A1, sont reçus dans des orifices correspondants 48 percés dans le noyau fixe 28. The studs 46, three in number and angularly distributed at 120 ° around the axis A1, are received in holes correspondents 48 drilled in the fixed core 28.

Comme on peut le voir plus particulièrement sur la figure 2, le diamètre des orifices 48 est légèrement supérieur à celui des plots 46 de manière que les plots 46 ne coopèrent avec les orifices 48 que par une portion de leur surface latérale qui est tournée en direction de l'axe A1. On assure ainsi une précision optimale du centrage relatif ou de la coaxialité entre le corps de bobine 16 et le noyau fixe 28, en évitant notamment toute liaison hyperstatique entre les deux éléments.As we can see more particularly on the FIG. 2, the diameter of the orifices 48 is slightly greater than that of the pads 46 so that the pads 46 do not cooperate with the orifices 48 only by a portion of their lateral surface which is turned towards the axis A1. This ensures a optimal accuracy of relative centering or coaxiality between the coil body 16 and the fixed core 28, in particular avoiding any hyperstatic connection between the two elements.

Comme on peut le voir sur les figures 1 et 2, les orifices 48 débouchent axialement de part et d'autre du noyau fixe 28 et les plots 46 s'étendent vers l'avant au-delà d'une face avant 50 du noyau fixe 28.As can be seen in Figures 1 and 2, the orifices 48 open axially on either side of the core fixed 28 and the pads 46 extend forwards beyond a front face 50 of the fixed core 28.

Ainsi, les plots 46 peuvent former des points d'appui pour une plaque à circuit imprimé 52 qui est agencée transversalement dans le contacteur 10, entre le noyau fixe 28 et la plaque de contact 38, et qui porte des composants électroniques de commande et de régulation du courant électrique parcourant le bobinage 14.Thus, the pads 46 can form support points for a printed circuit board 52 which is arranged transversely in the contactor 10, between the fixed core 28 and the contact plate 38, and which carries components electronic control and regulation of electric current traversing the winding 14.

La plaque 52, de forme annulaire, est ainsi en appui axialement vers l'arrière contre l'extrémité avant des plots 46.The plate 52, of annular shape, is thus supported axially rearwards against the front end of the studs 46.

Selon un autre aspect de l'invention, deux des plots 46 sont creux, c'est-à-dire qu'ils débouchent axialement vers l'avant et axialement vers l'arrière dans la face transversale arrière 54 du flanc avant 22 du corps de bobine 16.According to another aspect of the invention, two of the pads 46 are hollow, i.e. they open axially towards front and axially backwards in the transverse face rear 54 of the front flank 22 of the coil body 16.

Les plots 46 ménagent ainsi un passage au travers du noyau fixe 28 pour un conducteur électrique 20 du bobinage 14.The studs 46 thus provide a passage through the fixed core 28 for an electrical conductor 20 of the winding 14.

De manière avantageuse, des moyens de raccordement du conducteur avec le circuit imprimé de la plaque 52 sont agencés en regard du plot creux 46 de manière que le conducteur 20 puisse être directement raccordé aux composants de commande.Advantageously, means for connecting the conductor with the printed circuit of the plate 52 are arranged opposite the hollow stud 46 so that the conductor 20 can be directly connected to the control components.

La plaque 52 est ainsi munie d'un oeillet de raccordement 56 qui comporte un fût cylindrique axial 58 engagé au travers d'une perforation 59 de la plaque 52. Le fût 58 comporte, à son extrémité axiale arrière, un collet conique qui est destiné à être serré axialement entre l'extrémité avant du plot 46 et une face arrière de la plaque 52.The plate 52 is thus provided with a grommet connection 56 which comprises an axial cylindrical barrel 58 engaged through a hole 59 in the plate 52. The barrel 58 has, at its rear axial end, a conical collar which is intended to be clamped axially between the front end of the pad 46 and a rear face of the plate 52.

De la sorte, il est prévu que l'extrémité du conducteur 20 qui s'étend à l'intérieur du plot 46 soit également reçue dans le fût 58 de l'oeillet 56 qui prolonge axialement le plot creux 46. Le conducteur est alors relié au fût, par exemple par soudage ou par sertissage, de manière à assurer d'une part la liaison électrique entre le bobinage 14 et le circuit de commande, et d'autre part à assurer la tenue mécanique de l'oeillet et de la plaque 52 en appui contre le plot 46.In this way, it is expected that the end of the conductor 20 which extends inside the pad 46 is also received in the barrel 58 of the eyelet 56 which extends the stud axially hollow 46. The conductor is then connected to the barrel, for example by welding or crimping, so as to ensure on the one hand the electrical connection between the winding 14 and the circuit control, and secondly to ensure the mechanical strength of the eyelet and the plate 52 pressing against the stud 46.

Avantageusement, les plots 46 qui sont creux sont pourvus d'une fente 60 qui débouche radialement vers l'extérieur et qui s'étend axialement sur toute la longueur du plot 46 et du flasque avant 22 du corps de bobine 16.Advantageously, the pads 46 which are hollow are provided with a slot 60 which opens radially outwards and which extends axially over the entire length of the stud 46 and the front flange 22 of the coil body 16.

De la sorte, lorsque le fil conducteur 20 est enroulé autour de la paroi cylindrique 18 du corps de bobine 16, les extrémités du conducteur 20 qui doivent être reliées à la plaque à circuit imprimé 52 sont engagées radialement de l'extérieur vers l'intérieur dans les plots creux 46, au travers de la fente 60. On évite ainsi d'avoir à enfiler le fil axialement dans le plot 46.In this way, when the conductive wire 20 is wound around the cylindrical wall 18 of the coil body 16, the ends of the conductor 20 which must be connected to the plate with printed circuit 52 are engaged radially from the outside inwards in the hollow studs 46, through the slot 60. This avoids having to thread the wire axially into the stud 46.

Claims (10)

Contacteur pour un démarreur de véhicule automobile, du type comportant un noyau magnétique mobile qui se déplace axialement sous l'effet d'un champ magnétique créé par un bobinage (14) comportant au moins un conducteur électrique (20) enroulé autour d'un corps de bobine (16), et du type comportant un noyau magnétique fixe (28) qui s'étend transversalement à une extrémité axiale avant du bobinage (14),
   caractérisé en ce que le corps de bobine (16) comporte une série de plots (46) qui s'étendent axialement vers l'avant depuis l'extrémité axiale avant du corps de bobine (16), et qui sont reçus dans des orifices de centrage (48) correspondants aménagés dans le noyau fixe (28).Contactor for a motor vehicle starter, of the type comprising a movable magnetic core which moves axially under the effect of a magnetic field created by a coil (14) comprising at least one electrical conductor (20) wound around a body coil (16), and of the type comprising a fixed magnetic core (28) which extends transversely to a front axial end of the coil (14),
characterized in that the coil body (16) has a series of studs (46) which extend axially forward from the front axial end of the coil body (16), and which are received in holes corresponding centering (48) arranged in the fixed core (28). Contacteur selon la revendication 1, caractérisé en ce que les plots (46) assurent une coaxialité entre le noyau fixe (28) et le corps de bobine (16)Contactor according to claim 1, characterized in that the studs (46) ensure coaxiality between the core fixed (28) and the coil body (16) Contacteur selon l'une des revendications 1 ou 2, caractérisé en ce que le noyau fixe (28) est réalisé sous la forme d'une plaque.Contactor according to one of claims 1 or 2, characterized in that the fixed core (28) is produced under the shape of a plate. Contacteur selon l'une quelconque des revendications précédentes, caractérisé en ce que l'un au moins des orifices (48) de centrage du noyau fixe (28) débouche dans une face avant du noyau, et en ce que le plot (46) correspondant débouche dans un espace du contacteur (10) délimité à l'avant du noyau fixe (28).Contactor according to any one of the claims previous, characterized in that at least one of the orifices (48) for centering the fixed core (28) opens into a front face of the core, and in that the corresponding stud (46) opens into a space of the contactor (10) delimited at the front of the fixed core (28). Contacteur selon la revendication 4, caractérisé en ce que le démarreur comporte un circuit électronique de commande qui est porté par une plaque à circuit imprimé (52) agencée dans le contacteur (10), en avant du noyau fixe (28), et en ce que le plot (46) qui débouche en avant du noyau fixe (28) forme une surface d'appui pour la plaque (52).Contactor according to claim 4, characterized in that the starter has an electronic control circuit which is carried by a printed circuit board (52) arranged in the contactor (10), in front of the fixed core (28), and in that the stud (46) which opens in front of the fixed core (28) forms a bearing surface for the plate (52). Contacteur selon l'une des revendications 4 ou 5, caractérisé en ce que le plot (46) du corps de bobine (16) qui débouche en avant du noyau fixe (28) est creux, et en ce que le plot (46) forme un passage axial au travers du noyau fixe (28) pour un conducteur électrique (20) du bobinage (14).Contactor according to one of claims 4 or 5, characterized in that the stud (46) of the coil body (16) which opens out in front of the fixed core (28) is hollow, and in that the stud (46) forms an axial passage through the fixed core (28) for an electrical conductor (20) of the winding (14). Contacteur selon la revendication 6, caractérisé en ce que le bobinage (14) est enroulé autour d'une paroi cylindrique (18) du corps de bobine (16), entre deux parois transversales avant (22) et arrière (24), en ce que les plots (46) s'étendent depuis une face avant (30) de la paroi transversale avant (22), et en ce que la paroi transversale avant (22) est percée dans le prolongement axial du plot creux (46) pour permettre le passage du conducteur électrique (20).Contactor according to claim 6, characterized in that the winding (14) is wound around a wall cylindrical (18) of the coil body (16), between two walls transverse front (22) and rear (24), in that the studs (46) extend from a front face (30) of the wall transverse front (22), and in that the transverse wall front (22) is drilled in the axial extension of the hollow stud (46) to allow the passage of the electrical conductor (20). Contacteur selon la revendication 7, caractérisé en ce que le conducteur (20) peut être engagé dans le plot creux (46) radialement de l'extérieur vers l'intérieur par une fente radiale (60) qui s'étend sur la longueur du plot (46) et dans la paroi transversale avant (22).Contactor according to claim 7, characterized in that the conductor (20) can be engaged in the hollow stud (46) radially from the outside towards the inside by a slot radial (60) which extends over the length of the stud (46) and in the front transverse wall (22). Contacteur selon l'une des revendications 7 ou 8, caractérisé en ce que la plaque à circuit imprimé (52) comporte une perforation (59) qui est prévue pour le passage axial du conducteur (20), et qui est munie d'un oeillet métallique (56) pour le raccordement électrique du conducteur (20) au circuit imprimé, et en ce que le conducteur (20) est fixé sur l'oeillet (56) de telle manière que l'oeillet (56) de la plaque (52) est en appui contre une extrémité avant du plot (46).Contactor according to one of claims 7 or 8, characterized in that the printed circuit board (52) has a perforation (59) which is provided for the axial passage of the conductor (20), and which is provided with a metal eyelet (56) for the electrical connection of the conductor (20) to the circuit printed, and in that the conductor (20) is fixed on the eyelet (56) in such a way that the eyelet (56) of the plate (52) is resting against a front end of the stud (46). Contacteur selon l'une quelconque des revendications précédentes, caractérisé en ce que le corps de bobine (16) comporte trois plots de centrage (46) cylindriques répartis angulairement de manière régulière, en ce que les orifices de centrage (48) du noyau fixe (28) sont de diamètre supérieur aux plots (46), et en ce que les plots (46) coopèrent avec les orifices correspondants (48) par une portion de leur surface latérale qui est agencée radialement vers l'intérieur par rapport à l'axe (A1) du corps de bobine (16).Contactor according to any one of previous claims, characterized in that the body of coil (16) has three cylindrical centering pads (46) evenly distributed angularly, in that the centering holes (48) of the fixed core (28) are of diameter higher than the studs (46), and in that the studs (46) cooperate with the corresponding orifices (48) by a portion of their lateral surface which is arranged radially inwards relative to the axis (A1) of the coil body (16).
EP19980101170 1997-02-14 1998-01-23 Starter contactor for motor vehicule with perfectionated means for centring a stationary core Expired - Lifetime EP0859393B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9701856A FR2759811B1 (en) 1997-02-14 1997-02-14 CONTACTOR FOR A MOTOR VEHICLE STARTER COMPRISING IMPROVED MEANS FOR CENTERING A FIXED CORE
FR9701856 1997-02-14

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EP0859393A1 true EP0859393A1 (en) 1998-08-19
EP0859393B1 EP0859393B1 (en) 2004-10-20

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DE (1) DE69827054T2 (en)
FR (1) FR2759811B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2795859A1 (en) * 1999-06-30 2001-01-05 Valeo Equip Electr Moteur Car starter motor electromagnetic drive having coil container internal section mounted with internal mounting/guide section and sealing ring sealing coil inner/spacing coil.
EP1901326A1 (en) * 2006-09-15 2008-03-19 Siemens Aktiengesellschaft Motor starter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4404533A (en) * 1981-03-27 1983-09-13 Honda Giken Kogyo Kabushiki Kaisha Electromagnetic switch device
FR2586855A1 (en) * 1985-09-05 1987-03-06 Paris & Du Rhone Dual-winding solenoid coil, in particular for starter actuator
EP0751545A1 (en) * 1995-06-27 1997-01-02 Valeo Equipements Electriques Moteur Starter contactor having an electronic circuit integrated to the contactor, and vehicle starter having such a contactor
DE19626017A1 (en) * 1995-07-05 1997-01-09 Valeo Equip Electr Moteur Motor vehicle IC engine starter motor with unitary relay coil former - has excitation coil wound in annular recess between radial cheeks protruding from former serving as eddy-current brake on moving core.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4404533A (en) * 1981-03-27 1983-09-13 Honda Giken Kogyo Kabushiki Kaisha Electromagnetic switch device
FR2586855A1 (en) * 1985-09-05 1987-03-06 Paris & Du Rhone Dual-winding solenoid coil, in particular for starter actuator
EP0751545A1 (en) * 1995-06-27 1997-01-02 Valeo Equipements Electriques Moteur Starter contactor having an electronic circuit integrated to the contactor, and vehicle starter having such a contactor
DE19626017A1 (en) * 1995-07-05 1997-01-09 Valeo Equip Electr Moteur Motor vehicle IC engine starter motor with unitary relay coil former - has excitation coil wound in annular recess between radial cheeks protruding from former serving as eddy-current brake on moving core.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2795859A1 (en) * 1999-06-30 2001-01-05 Valeo Equip Electr Moteur Car starter motor electromagnetic drive having coil container internal section mounted with internal mounting/guide section and sealing ring sealing coil inner/spacing coil.
EP1901326A1 (en) * 2006-09-15 2008-03-19 Siemens Aktiengesellschaft Motor starter
US7898373B2 (en) 2006-09-15 2011-03-01 Siemens Aktiengesellschaft Motor starter
CN101145745B (en) * 2006-09-15 2012-07-04 西门子公司 Motor starter

Also Published As

Publication number Publication date
DE69827054T2 (en) 2005-03-03
FR2759811A1 (en) 1998-08-21
EP0859393B1 (en) 2004-10-20
DE69827054D1 (en) 2004-11-25
FR2759811B1 (en) 1999-04-09

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