EP0859394A1 - Starter contactor for motor vehicule having perfectionate protection means of electronic circuit - Google Patents

Starter contactor for motor vehicule having perfectionate protection means of electronic circuit Download PDF

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Publication number
EP0859394A1
EP0859394A1 EP98101171A EP98101171A EP0859394A1 EP 0859394 A1 EP0859394 A1 EP 0859394A1 EP 98101171 A EP98101171 A EP 98101171A EP 98101171 A EP98101171 A EP 98101171A EP 0859394 A1 EP0859394 A1 EP 0859394A1
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EP
European Patent Office
Prior art keywords
partition
contactor
transverse
contact plate
cover
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
EP98101171A
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German (de)
French (fr)
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EP0859394B1 (en
Inventor
Jean-François Quentric
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Equipements Electriques Moteur SAS
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Valeo Equipements Electriques Moteur SAS
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Application filed by Valeo Equipements Electriques Moteur SAS filed Critical Valeo Equipements Electriques Moteur SAS
Publication of EP0859394A1 publication Critical patent/EP0859394A1/en
Application granted granted Critical
Publication of EP0859394B1 publication Critical patent/EP0859394B1/en
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Classifications

    • 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
    • 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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/023—Details concerning sealing, e.g. sealing casing with resin

Definitions

  • the invention relates to a contactor for a starter of motor vehicle comprising improved means of protection of an electronic circuit.
  • the invention relates more particularly to a contactor, of the type comprising a movable magnetic core which moves axially in the center of a winding and acts on a rod of which a front end controls the movements of a contact plate capable of electrically connecting two contactor terminals, of the type in which the control rod extends axially forward through an orifice of a fixed transverse core of the contactor which is arranged axially in front of the winding, of the type in which the contact plate is received inside a cover arranged at the front of the winding, and of the type in which an electronic circuit is arranged in the cover, between the fixed magnetic core and a bulkhead separation which is crossed by the control rod.
  • the electronic card is arranged in a compartment of the cover which is delimited, at the rear of it, by a partition of separation.
  • this compartment is not waterproof because that the contact plate displacement control rod passes axially through this compartment at its center.
  • control rod since the control rod must ability to slide axially through two axial ports respectively arranged in the fixed magnetic core in the partition, it is necessary to provide a clearance radial between the rod and these orifices. So during displacements of the rod, dust or moisture are likely to enter the compartment in which the electronic circuit is arranged.
  • the invention provides a contactor, of the type comprising a core moving magnetic which moves axially in the center of a winding (12) and which acts on a rod which controls the displacements of a contact plate capable of connecting electrically two terminals of the contactor, of the type in which the control rod extends axially forward through a orifice of a fixed transverse core of the contactor which is arranged axially in front of the winding, of the type in which the plate contact is received inside a cover arranged at the front of the winding, and of the type in which an electronic circuit is arranged in the cover, between the fixed magnetic core and a partition which is crossed by the control rod, characterized in that the partition wall has a transverse wall and an axial shaft in which the rod slides control, and in that the barrel opens forward forwards from the transverse wall, and backwards, behind the core transverse fixed.
  • FIG. 1 shows a contactor 10 for an electric starter for a motor vehicle.
  • Contactor 10 includes an inductor winding annular 12 of axis A1 which is arranged in a housing 14 substantially cylindrical and which is wound on a body of coil 16.
  • a mobile magnetic core 18, substantially cylindrical, can slide axially in the center of the winding 12 between a remote rest position, which is shown in Figure 1, and an active forward position (not shown) in which the movable core 18 has moved towards the left considering figure 1 under the effect of a field magnetic created by the coil 12 traversed by a current electric.
  • the field lines created by the winding 14 are close thanks to the presence of a fixed magnetic core 46 which is arranged transversely at the front of the winding 12.
  • the mobile magnetic core 18 causes the meshing a starter pinion (not shown) with a crown toothed engine of the vehicle (not shown).
  • the movable core 18 causes the axial displacement of an axial rod 20 of the contactor 10 which controls the axial movement of a contact plate 22 from a retracted position of rest, shown in FIG. 1, to an active forward position (not shown) in which the contact plate 22 bears axially towards the front against the heads 24, 26 of two terminals 28, 30 one of which is connected to a vehicle storage battery and the other is connected to an electric starter motor. So, in the active position, the contact plate 22 causes the starter motor power supply which is then likely to cause the combustion engine to rotate vehicle to allow it to start.
  • the contact plate 22 and the heads 24, 26 of terminals 28 and 30 are arranged in a cover 32 which closes, at the front, the housing 14 of the contactor 10.
  • the contact plate 22 and the terminals 28, 30 are received in a front compartment 34 of the cover 32 which is substantially rectangular in shape, while a rear compartment 36 of the cover 32, of cylindrical shape, allows the junction of the cover 32 with the housing 14 of the contactor 10.
  • the contactor 10 comprises a card with printed circuit 38 which extends in a transverse plane and which is received inside the rear compartment 36 of the cover 32.
  • the printed circuit board 38 carries an electronic circuit of control of the power supply to the field winding 12.
  • the rear compartment 36 is axially delimited inside the cover 32 on the one hand, with the front, by a transverse wall 42 of a partition of separation 44 and on the other hand, at the rear, by the core fixed transverse magnetic 46.
  • the front compartment 34 of the cover 32 is axially delimited at the rear by the transverse wall 42 of the partition 44 and, at the front, by a wall transverse front 50 through which extend, axially outwards, the cylindrical body threaded each of the terminals 28, 30.
  • control rod which connects the core movable magnetic 18 to contact plate 22, crosspiece axially the rear compartment 36 of the cover 32, passing through in particular the fixed transverse magnetic core 46 through an axial orifice 52 thereof.
  • the partition 44 has an axial shaft 54 substantially tubular which allows to make the rear compartment 36 appreciably tight compared to the front compartment 34 of the cover 32 and relative to the central bore 56 of the body of coil 16 in which the mobile magnetic core 18 moves.
  • the axial shaft 54 has the shape of a cylindrical tube stepped which delimits an internal bore 59 comprising a segment rear 58 and a front segment 60 of enlarged diameter with respect to rear segment 58.
  • the bore internal 59 of the axial shaft 54 opens axially forwards in front of the transverse wall 42, that is to say in the front compartment 34 of cover 32, and towards the rear, in the orifice 52 of the fixed magnetic core 46, so that the internal bore 59 of the barrel 54 forms an axial passage connecting the internal bore 56 of the coil body 16 in the front compartment 34.
  • the rear axial end 62 of the barrel 54 has an internal radial collar 64 which delimits a face transverse annular 66 turned towards the rear.
  • the internal radial collar 64 is intended to be received inside the orifice 52 of the magnetic core transverse fixed 46 while the annular transverse face 66 is intended to bear axially rearwards against a front face 68 of this fixed core 46.
  • the transverse wall 42 of the partition of separation 44 is intended to bear axially towards the front, by a peripheral edge 70, against a face internal transverse 72 of the cover 32 which is turned towards the rear and which delimits the two front compartments 34 and rear 36 of the cover 32.
  • the transverse wall 42 has substantially the shape of a rectangle similar to the cross-sectional shape of the front compartment 34, but slightly larger.
  • the partition 44 is tight axially between the cover 32 and the fixed magnetic core 46, itself secured to the housing 14, so that the compartment rear 36 is isolated from the front compartment 34 and from the bore 56 of the coil body 16.
  • the rear compartment 36 which is traversed axially through the barrel 54, is therefore substantially annular, so that the printed circuit board 38 must also be annular. From this done, it has a central passage for the barrel 54.
  • a rear section 74 of the control rod 20 is guided in axial sliding in the rear segment 58 of the internal bore 59 of the axial shaft 54.
  • the control rod 20 is extended axially to the front by an intermediate section 76 on which the plate contact 22 is mounted axially movable, and on which it is stressed axially forwards by a compression spring 78.
  • the spring 78 is interposed axially between a collar external radial 80 arranged at the rear of the intermediate section 76 and a rear face 82 of the contact plate 22.
  • stiffening ribs 86 which extend in axial planes on each side transverse front and rear of the wall 42.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

The contactor has a moving magnetic core (18) which is displaced axially to the centre of a coil (12) and acts on a rod (20) which controls a contact plate (22) joining two contacts (28,30). The rod passes through a stepped hole in a fixed transverse magnetic core (46) and a bore in a barrel (54) which partially enters the hole and which forms, together with a ribbed transverse wall (42), the partition (44). An internal radial collar on the rear of the barrel creates a seal in the hole where the barrel meets the front surface of the fixed core. The front end of the barrel extends beyond the transverse wall to support the rear of the contact plate. The electronic circuit (38) is thus sealed off.

Description

L'invention concerne un contacteur pour un démarreur de véhicule automobile comportant des moyens perfectionnés de protection d'un circuit électronique.The invention relates to a contactor for a starter of motor vehicle comprising improved means of protection of an electronic circuit.

L'invention concerne plus particulièrement un contacteur, du type comportant un noyau magnétique mobile qui se déplace axialement au centre d'un bobinage et qui agit sur une tige dont une extrémité avant commande les déplacements d'une plaque de contact susceptible de relier électriquement deux bornes du contacteur, du type dans lequel la tige de commande s'étend axialement vers l'avant au travers d'un orifice d'un noyau transversal fixe du contacteur qui est agencé axialement en avant du bobinage, du type dans lequel la plaque de contact est reçue à l'intérieur d'un capot agencé à l'avant du bobinage, et du type dans lequel un circuit électronique est agencé dans le capot, entre le noyau magnétique fixe et une cloison de séparation qui est traversée par la tige de commande.The invention relates more particularly to a contactor, of the type comprising a movable magnetic core which moves axially in the center of a winding and acts on a rod of which a front end controls the movements of a contact plate capable of electrically connecting two contactor terminals, of the type in which the control rod extends axially forward through an orifice of a fixed transverse core of the contactor which is arranged axially in front of the winding, of the type in which the contact plate is received inside a cover arranged at the front of the winding, and of the type in which an electronic circuit is arranged in the cover, between the fixed magnetic core and a bulkhead separation which is crossed by the control rod.

Il est connu d'utiliser des circuits électroniques de commande de l'alimentation du bobinage du contacteur. De tels circuits électroniques permettent d'avoir une parfaite maítrise du déplacement du noyau mobile du contacteur, déplacement qui a pour conséquence d'une part de provoquer l'engrènement d'un pignon du démarreur avec une couronne dentée d'un moteur thermique du véhicule automobile, et d'autre part de provoquer l'alimentation du moteur électrique du démarreur pour entraíner en rotation le moteur thermique.It is known to use electronic circuits for control of the power supply to the contactor winding. Such electronic circuits allow for perfect control displacement of the movable core of the contactor, displacement which on the one hand, to cause the meshing of a starter gear with a gear ring of a motor motor vehicle thermal, and secondly to cause the starter electric motor supply to drive in rotation the heat engine.

Il a d'abord été proposé d'agencer le circuit électronique à l'extérieur du contacteur, mais il est rapidement apparu préférable de l'intégrer à l'intérieur du capot avant du contacteur de manière à diminuer l'encombrement total de celui-ci.It was first proposed to arrange the circuit electronics outside the contactor but it's quickly appeared preferable to integrate it inside the front cover of the contactor so as to reduce the total size thereof.

Toutefois, les circuits électroniques sont très sensibles à la poussière, à l'humidité, et aux particules métalliques qui peuvent créer des liaisons électriques entre les différentes pistes du circuit.However, electronic circuits are very sensitive to dust, humidity, and particles that can create electrical connections between different tracks of the circuit.

Dans les contacteurs selon l'état de la technique, la carte électronique est agencée dans un compartiment du capot qui est délimité, à l'arrière de celui-ci, par une cloison de séparation. Cependant, ce compartiment n'est pas étanche du fait que la tige de commande des déplacements de la plaque de contact traverse axialement ce compartiment en son centre.In contactors according to the state of the art, the electronic card is arranged in a compartment of the cover which is delimited, at the rear of it, by a partition of separation. However, this compartment is not waterproof because that the contact plate displacement control rod passes axially through this compartment at its center.

De la sorte, étant donné que la tige de commande doit pouvoir coulisser axialement au travers des deux orifices axiaux aménagés respectivement dans le noyau magnétique fixe dans la cloison de séparation, il est nécessaire de prévoir un jeu radial entre la tige et ces orifices. Ainsi, lors des déplacements de la tige, des poussières ou de l'humidité sont susceptibles de s'introduire dans le compartiment dans lequel est agencé le circuit électronique.In this way, since the control rod must ability to slide axially through two axial ports respectively arranged in the fixed magnetic core in the partition, it is necessary to provide a clearance radial between the rod and these orifices. So during displacements of the rod, dust or moisture are likely to enter the compartment in which the electronic circuit is arranged.

Dans le but d'apporter une solution à ce problème, l'invention propose un contacteur, du type comportant un noyau magnétique mobile qui se déplace axialement au centre d'un bobinage (12) et qui agit sur une tige qui commande les déplacements d'une plaque de contact susceptible de relier électriquement deux bornes du contacteur, du type dans lequel la tige de commande s'étend axialement vers l'avant au travers d'un orifice d'un noyau transversal fixe du contacteur qui est agencé axialement en avant du bobinage, du type dans lequel la plaque de contact est reçue à l'intérieur d'un capot agencé à l'avant du bobinage, et du type dans lequel un circuit électronique est agencé dans le capot, entre le noyau magnétique fixe et une cloison de séparation qui est traversée par la tige de commande, caractérisé en ce que la cloison de séparation comporte une paroi transversale et un fût axial dans lequel coulisse la tige de commande, et en ce que le fût débouche vers l'avant en avant de la paroi transversale, et vers l'arrière, en arrière du noyau transversal fixe.In order to provide a solution to this problem, the invention provides a contactor, of the type comprising a core moving magnetic which moves axially in the center of a winding (12) and which acts on a rod which controls the displacements of a contact plate capable of connecting electrically two terminals of the contactor, of the type in which the control rod extends axially forward through a orifice of a fixed transverse core of the contactor which is arranged axially in front of the winding, of the type in which the plate contact is received inside a cover arranged at the front of the winding, and of the type in which an electronic circuit is arranged in the cover, between the fixed magnetic core and a partition which is crossed by the control rod, characterized in that the partition wall has a transverse wall and an axial shaft in which the rod slides control, and in that the barrel opens forward forwards from the transverse wall, and backwards, behind the core transverse fixed.

Selon d'autres caractéristiques de l'invention :

  • la cloison de séparation délimite dans le capot un compartiment avant, dans lequel sont agencées les bornes et la plaque de contact, et un compartiment arrière étanche, dans lequel est agencé le circuit électronique ;
  • le fût axial de la cloison de séparation comporte une extrémité axiale arrière qui est engagée de manière étanche dans l'orifice du noyau magnétique fixe ;
  • l'extrémité axiale arrière du fût de la cloison comporte un collet radial interne qui délimite un face transversale sensiblement annulaire qui est en appui axialement vers l'arrière contre une face avant du noyau magnétique fixe lorsque l'extrémité arrière du fût est reçue dans l'orifice du noyau magnétique fixe ;
  • le fût axial de la cloison de séparation comporte une extrémité axiale avant qui s'étend au-delà de la paroi transversale et qui forme un surface d'appui pour la plaque de contact ;
  • le fût axial comporte un alésage central qui comporte un segment arrière dans lequel est guidé un tronçon arrière de la tige de commande, et un segment avant de diamètre élargi ;
  • la plaque de contact est montée coulissante sur un tronçon intermédiaire de la tige de commande, un ressort hélicoïdal de compression est interposé entre un collet radial externe, agencé à l'arrière du tronçon intermédiaire, et la plaque de contact pour solliciter cette dernière vers une positon avancée, et le ressort, qui est enroulé autour du tronçon intermédiaire, est reçu avec ce dernier dans le segment avant élargi du fût axial lorsque la tige de commande occupe une position reculée de repos ;
  • la paroi transversale de la cloison de séparation comporte des nervures de rigidification ;
  • le capot comporte une face transversale qui est tournée vers l'arrière, qui est agencée à la limite des deux compartiments du capot, et contre laquelle la paroi transversale de la cloison est en appui axialement vers l'avant par un bord périphérique ;
  • le compartiment arrière du capot dans lequel est reçu le circuit électronique est sensiblement de forme annulaire, autour du fût axial de la cloison de séparation.
According to other characteristics of the invention:
  • the partition delimits in the cover a front compartment, in which the terminals and the contact plate are arranged, and a sealed rear compartment, in which the electronic circuit is arranged;
  • the axial barrel of the partition has a rear axial end which is sealingly engaged in the orifice of the fixed magnetic core;
  • the rear axial end of the barrel of the partition has an internal radial collar which delimits a substantially annular transverse face which bears axially towards the rear against a front face of the fixed magnetic core when the rear end of the barrel is received in the orifice of the fixed magnetic core;
  • the axial shaft of the partition has a front axial end which extends beyond the transverse wall and which forms a bearing surface for the contact plate;
  • the axial shaft has a central bore which includes a rear segment in which a rear section of the control rod is guided, and a front segment of enlarged diameter;
  • the contact plate is slidably mounted on an intermediate section of the control rod, a helical compression spring is interposed between an external radial collar, arranged at the rear of the intermediate section, and the contact plate to urge the latter towards a advanced position, and the spring, which is wound around the intermediate section, is received with the latter in the enlarged front segment of the axial shaft when the control rod occupies a retracted position of rest;
  • the transverse wall of the partition wall has stiffening ribs;
  • the cover has a transverse face which is turned towards the rear, which is arranged at the limit of the two compartments of the cover, and against which the transverse wall of the partition bears axially forwards by a peripheral edge;
  • the rear compartment of the cover in which the electronic circuit is received is substantially annular in shape, around the axial shaft of the partition.

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 coupe axiale d'un contacteur de démarreur conforme aux enseignements de l'invention ;
  • la figure 2 est une vue schématique en perspective éclatée illustrant le capot avant et la cloison de séparation d'un contacteur selon l'invention ; et
  • la figure 2 est une vue agrandie en coupe axiale de la cloison de séparation selon l'invention.
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 appended 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 schematic exploded perspective view illustrating the front cover and the partition of a contactor according to the invention; and
  • Figure 2 is an enlarged view in axial section of the partition wall according to the invention.

On a représenté sur la figure 1 un contacteur 10 pour un démarreur électrique de véhicule automobile.FIG. 1 shows a contactor 10 for an electric starter for a motor vehicle.

Le contacteur 10 comporte un bobinage inducteur annulaire 12 d'axe A1 qui est agencé dans un boítier 14 sensiblement cylindrique et qui est enroulé sur un corps de bobine 16.Contactor 10 includes an inductor winding annular 12 of axis A1 which is arranged in a housing 14 substantially cylindrical and which is wound on a body of coil 16.

Un noyau magnétique mobile 18, sensiblement cylindrique, est susceptible de coulisser axialement au centre du bobinage 12 entre une position reculée de repos, qui est représentée sur la figure 1, et une position avancée active (non représentée) dans laquelle le noyau mobile 18 s'est déplacé vers la gauche en considérant la figure 1 sous l'effet d'un champ magnétique créé par le bobinage 12 parcouru par un courant électrique. Les lignes de champ créées par le bobinage 14 se referment grâce à la présence d'un noyau magnétique fixe 46 qui est agencé transversalement à l'avant du bobinage 12.A mobile magnetic core 18, substantially cylindrical, can slide axially in the center of the winding 12 between a remote rest position, which is shown in Figure 1, and an active forward position (not shown) in which the movable core 18 has moved towards the left considering figure 1 under the effect of a field magnetic created by the coil 12 traversed by a current electric. The field lines created by the winding 14 are close thanks to the presence of a fixed magnetic core 46 which is arranged transversely at the front of the winding 12.

De manière connue, en se déplaçant vers sa position active, le noyau magnétique mobile 18 provoque l'engrènement d'un pignon (non représenté) du démarreur avec une couronne dentée d'un moteur thermique (non représenté) du véhicule.In a known manner, by moving towards its position active, the mobile magnetic core 18 causes the meshing a starter pinion (not shown) with a crown toothed engine of the vehicle (not shown).

Simultanément, le noyau mobile 18 provoque le déplacement axial d'une tige axiale 20 du contacteur 10 qui commande le déplacement axial d'une plaque de contact 22 depuis une position reculée de repos, représentée sur la figure 1, jusqu'à une position avancée active (non représentée) dans laquelle la plaque de contact 22 est en appui axialement vers l'avant contre les têtes 24, 26 de deux bornes 28, 30 dont l'une est reliée à une batterie d'accumulateurs du véhicule et dont l'autre est reliée à un moteur électrique du démarreur. Ainsi, en position active, la plaque de contact 22 provoque l'alimentation électrique du moteur du démarreur qui est alors susceptible d'entraíner en rotation le moteur thermique du véhicule afin d'en permettre le démarrage.Simultaneously, the movable core 18 causes the axial displacement of an axial rod 20 of the contactor 10 which controls the axial movement of a contact plate 22 from a retracted position of rest, shown in FIG. 1, to an active forward position (not shown) in which the contact plate 22 bears axially towards the front against the heads 24, 26 of two terminals 28, 30 one of which is connected to a vehicle storage battery and the other is connected to an electric starter motor. So, in the active position, the contact plate 22 causes the starter motor power supply which is then likely to cause the combustion engine to rotate vehicle to allow it to start.

De manière connue, la plaque de contact 22 et les têtes 24, 26 des bornes 28 et 30 sont agencées dans un capot 32 qui ferme, à l'avant, le boítier 14 du contacteur 10. In known manner, the contact plate 22 and the heads 24, 26 of terminals 28 and 30 are arranged in a cover 32 which closes, at the front, the housing 14 of the contactor 10.

Comme on peut le voir plus particulièrement sur la figure 2, la plaque de contact 22 et les bornes 28, 30 sont reçues dans un compartiment avant 34 du capot 32 qui est sensiblement de forme parallélépipédique, tandis qu'un compartiment arrière 36 du capot 32, de forme cylindrique, permet la jonction du capot 32 avec le boítier 14 du contacteur 10.As we can see more particularly on the Figure 2, the contact plate 22 and the terminals 28, 30 are received in a front compartment 34 of the cover 32 which is substantially rectangular in shape, while a rear compartment 36 of the cover 32, of cylindrical shape, allows the junction of the cover 32 with the housing 14 of the contactor 10.

De manière connue, le contacteur 10 comporte une carte à circuit imprimé 38 qui s'étend dans un plan transversal et qui est reçue à l'intérieur du compartiment arrière 36 du capot 32. La carte à circuit imprimé 38 porte un circuit électronique de commande de l'alimentation du bobinage inducteur 12.In known manner, the contactor 10 comprises a card with printed circuit 38 which extends in a transverse plane and which is received inside the rear compartment 36 of the cover 32. The printed circuit board 38 carries an electronic circuit of control of the power supply to the field winding 12.

De manière connue, le compartiment arrière 36 est délimité axialement à l'intérieur du capot 32 d'une part, à l'avant, par une paroi transversale 42 d'une cloison de séparation 44 et d'autre part, à l'arrière, par le noyau magnétique transversal fixe 46.In a known manner, the rear compartment 36 is axially delimited inside the cover 32 on the one hand, with the front, by a transverse wall 42 of a partition of separation 44 and on the other hand, at the rear, by the core fixed transverse magnetic 46.

De la sorte, le compartiment avant 34 du capot 32 est délimité axialement, à l'arrière, par la paroi transversale 42 de la cloison de séparation 44 et, à l'avant, par une paroi transversale avant 50 au travers de laquelle s'étendent, axialement vers l'extérieur, le corps cylindrique fileté de chacune des bornes 28, 30.In this way, the front compartment 34 of the cover 32 is axially delimited at the rear by the transverse wall 42 of the partition 44 and, at the front, by a wall transverse front 50 through which extend, axially outwards, the cylindrical body threaded each of the terminals 28, 30.

Ainsi, la tige de commande, qui relie le noyau magnétique mobile 18 à la plaque de contact 22, traverse axialement le compartiment arrière 36 du capot 32, en traversant notamment le noyau magnétique transversal fixe 46 au travers d'un orifice axial 52 de celui-ci.So the control rod, which connects the core movable magnetic 18 to contact plate 22, crosspiece axially the rear compartment 36 of the cover 32, passing through in particular the fixed transverse magnetic core 46 through an axial orifice 52 thereof.

Conformément aux enseignements de l'invention, la cloison de séparation 44 comporte un fût axial 54 sensiblement tubulaire qui permet de rendre le compartiment arrière 36 sensiblement étanche par rapport au compartiment avant 34 du capot 32 et par rapport à l'alésage central 56 du corps de bobine 16 dans lequel se déplace le noyau magnétique mobile 18.In accordance with the teachings of the invention, the partition 44 has an axial shaft 54 substantially tubular which allows to make the rear compartment 36 appreciably tight compared to the front compartment 34 of the cover 32 and relative to the central bore 56 of the body of coil 16 in which the mobile magnetic core 18 moves.

Le fût axial 54 présente la forme d'un tube cylindrique étagé qui délimite un alésage interne 59 comportant un segment arrière 58 et un segment avant 60 de diamètre élargi par rapport au segment arrière 58. The axial shaft 54 has the shape of a cylindrical tube stepped which delimits an internal bore 59 comprising a segment rear 58 and a front segment 60 of enlarged diameter with respect to rear segment 58.

Comme on peut le voir sur les figures 1 et 3, l'alésage interne 59 du fût axial 54 débouche axialement vers l'avant en avant de la paroi transversale 42, c'est-à-dire dans le compartiment avant 34 du capot 32, et vers l'arrière, dans l'orifice 52 du noyau magnétique fixe 46, de telle sorte que l'alésage interne 59 du fût 54 forme un passage axial reliant l'alésage interne 56 du corps de bobine 16 au compartiment avant 34.As can be seen in Figures 1 and 3, the bore internal 59 of the axial shaft 54 opens axially forwards in front of the transverse wall 42, that is to say in the front compartment 34 of cover 32, and towards the rear, in the orifice 52 of the fixed magnetic core 46, so that the internal bore 59 of the barrel 54 forms an axial passage connecting the internal bore 56 of the coil body 16 in the front compartment 34.

A cet effet, l'extrémité axiale arrière 62 du fût 54 comporte un collet radial interne 64 qui délimite une face annulaire transversale 66 tournée vers l'arrière. Comme on peut le voir sur la figure 1, le collet radial interne 64 est destiné à être reçu à l'intérieur de l'orifice 52 du noyau magnétique transversal fixe 46 tandis que la face annulaire transversale 66 est destinée à venir en appui axialement vers l'arrière contre une face avant 68 de ce noyau fixe 46.For this purpose, the rear axial end 62 of the barrel 54 has an internal radial collar 64 which delimits a face transverse annular 66 turned towards the rear. As we can see in Figure 1, the internal radial collar 64 is intended to be received inside the orifice 52 of the magnetic core transverse fixed 46 while the annular transverse face 66 is intended to bear axially rearwards against a front face 68 of this fixed core 46.

Par ailleurs, la paroi transversale 42 de la cloison de séparation 44 est destinée à venir en appui axialement vers l'avant, par un bord périphérique 70, contre une face transversale interne 72 du capot 32 qui est tournée vers l'arrière et qui délimite les deux compartiments avant 34 et arrière 36 du capot 32. Comme on peut le voir sur la figure 2, la paroi transversale 42 présente sensiblement la forme d'un rectangle analogue à la forme en section transversale du compartiment avant 34, mais de taille légèrement supérieure.Furthermore, the transverse wall 42 of the partition of separation 44 is intended to bear axially towards the front, by a peripheral edge 70, against a face internal transverse 72 of the cover 32 which is turned towards the rear and which delimits the two front compartments 34 and rear 36 of the cover 32. As can be seen in FIG. 2, the transverse wall 42 has substantially the shape of a rectangle similar to the cross-sectional shape of the front compartment 34, but slightly larger.

Ainsi, lorsque le capot 32 est fixé sur le boítier 14 du contacteur 10, la cloison de séparation 44 est serrée axialement entre le capot 32 et le noyau magnétique fixe 46, lui-même solidaire du boítier 14, si bien que le compartiment arrière 36 se trouve isolé du compartiment avant 34 et de l'alésage 56 du corps de bobine 16.Thus, when the cover 32 is fixed on the housing 14 of contactor 10, the partition 44 is tight axially between the cover 32 and the fixed magnetic core 46, itself secured to the housing 14, so that the compartment rear 36 is isolated from the front compartment 34 and from the bore 56 of the coil body 16.

Le compartiment arrière 36, qui est traversé axialement par le fût 54, est donc sensiblement annulaire, si bien que la carte à circuit imprimé 38 doit elle aussi être annulaire. De ce fait, elle présente un passage central pour le fût 54.The rear compartment 36, which is traversed axially through the barrel 54, is therefore substantially annular, so that the printed circuit board 38 must also be annular. From this done, it has a central passage for the barrel 54.

Comme on peut le voir plus particulièrement sur la figure 1, un tronçon arrière 74 de la tige de commande 20 est guidé en coulissement axial dans le segment arrière 58 de l'alésage interne 59 du fût axial 54. As we can see more particularly on the Figure 1, a rear section 74 of the control rod 20 is guided in axial sliding in the rear segment 58 of the internal bore 59 of the axial shaft 54.

La tige de commande 20 est prolongée axialement à l'avant par un tronçon intermédiaire 76 sur lequel la plaque de contact 22 est montée mobile axialement, et sur lequel elle est sollicitée axialement vers l'avant par un ressort de compression 78. Le ressort 78 est interposé axialement entre un collet radial externe 80 agencé à l'arrière du tronçon intermédiaire 76 et une face arrière 82 de la plaque de contact 22.The control rod 20 is extended axially to the front by an intermediate section 76 on which the plate contact 22 is mounted axially movable, and on which it is stressed axially forwards by a compression spring 78. The spring 78 is interposed axially between a collar external radial 80 arranged at the rear of the intermediate section 76 and a rear face 82 of the contact plate 22.

Lorsque la tige de commande 20 est en position de repos, le collet arrière 80, le tronçon intermédiaire 76 et le ressort de compression 78 sont sensiblement reçus dans le segment avant 60 de l'alésage interne 59 du fût axial 54. Dans cette position, la plaque de contact 22 est en appui par sa face transversale arrière 82 contre une face transversale annulaire d'extrémité avant 84 du fût axial 54.When the control rod 20 is in the position of rest, the rear collar 80, the intermediate section 76 and the compression spring 78 are substantially received in the front segment 60 of the internal bore 59 of the axial shaft 54. In this position, the contact plate 22 is supported by its face rear transverse 82 against an annular transverse face front end 84 of the axial shaft 54.

Pour limiter la flexion de la paroi transversale 42, celle-ci est munie de nervures de rigidification 86 qui s'étendent dans des plans axiaux sur chacune des faces transversales avant et arrière de la paroi 42.To limit the bending of the transverse wall 42, this is provided with stiffening ribs 86 which extend in axial planes on each side transverse front and rear of the wall 42.

Claims (10)

Contacteur, du type comportant un noyau magnétique mobile (18) qui se déplace axialement au centre d'un bobinage (12) et qui agit sur une tige (20) qui commande les déplacements d'une plaque de contact (22) susceptible de relier électriquement deux bornes (28, 30) du contacteur (10), du type dans lequel la tige de commande (20) s'étend axialement vers l'avant au travers d'un orifice (52) d'un noyau transversal fixe (46) du contacteur (10) qui est agencé axialement en avant du bobinage (12), du type dans lequel la plaque de contact (22) est reçue à l'intérieur d'un capot (32) agencé à l'avant du bobinage (12), et du type dans lequel un circuit électronique (38) est agencé dans le capot (32), entre le noyau magnétique fixe (46) et une cloison de séparation (44) qui est traversée par la tige de commande (20),
   caractérisé en ce que la cloison de séparation (44) comporte une paroi transversale (42) et un fût axial (54), dans lequel coulisse la tige de commande (20), et en ce que le fût (54) débouche vers l'avant en avant de la paroi transversale (42), et vers l'arrière, en arrière du noyau transversal fixe (46).Contactor, of the type comprising a movable magnetic core (18) which moves axially in the center of a winding (12) and which acts on a rod (20) which controls the movements of a contact plate (22) capable of connecting electrically two terminals (28, 30) of the contactor (10), of the type in which the control rod (20) extends axially forwards through an orifice (52) of a fixed transverse core (46 ) of the contactor (10) which is arranged axially in front of the winding (12), of the type in which the contact plate (22) is received inside a cover (32) arranged at the front of the winding ( 12), and of the type in which an electronic circuit (38) is arranged in the cover (32), between the fixed magnetic core (46) and a partition (44) which is crossed by the control rod (20) ,
characterized in that the partition (44) has a transverse wall (42) and an axial drum (54), in which the control rod (20) slides, and in that the drum (54) opens out towards front in front of the transverse wall (42), and rearward, behind the fixed transverse core (46). Contacteur selon la revendication 1, caractérisé en ce que la cloison de séparation (44) délimite dans le capot (32) un compartiment avant (34), dans lequel sont agencées (es bornes (28, 30) et la plaque de contact (22), et un compartiment arrière étanche (36), dans lequel est agencé le circuit électronique (38).Contactor according to claim 1, characterized in what the partition (44) delimits in the cover (32) a front compartment (34), in which are arranged (the terminals (28, 30) and the contact plate (22), and a compartment watertight rear (36), in which the circuit is arranged electronic (38). Contacteur selon la revendication 2, caractérisé en ce que le fût axial (54) de la cloison de séparation (44) comporte une extrémité axiale arrière (62) qui est engagée de manière étanche dans l'orifice (52) du noyau magnétique fixe (46).Contactor according to claim 2, characterized in that the axial shaft (54) of the partition wall (44) has a rear axial end (62) which is engaged sealingly in the hole (52) of the fixed magnetic core (46). Contacteur selon la revendication 3, caractérisé en ce que l'extrémité axiale arrière (62) du fût (54) de la cloison (44) comporte un collet radial interne (64) qui délimite une face transversale sensiblement annulaire (66) qui est en appui axialement vers l'arrière contre une face avant (68) du noyau magnétique (46) fixe lorsque l'extrémité arrière (62) du fût (54) est reçue dans l'orifice (52) du noyau magnétique fixe (46).Contactor according to claim 3, characterized in that the rear axial end (62) of the barrel (54) of the partition (44) has an internal radial collar (64) which delimits a substantially annular transverse face (66) which is in abutment axially backwards against a front face (68) of the core magnetic (46) fixed when the rear end (62) of the barrel (54) is received in the orifice (52) of the fixed magnetic core (46). Contacteur selon l'une quelconque des revendications précédentes, caractérisé en ce que le fût axial (54) de la cloison de séparation (44) comporte une extrémité axiale avant (84) qui s'étend au-delà de la paroi transversale (42) et qui forme une surface d'appui pour la plaque de contact (22).Contactor according to any one of the claims previous, characterized in that the axial shaft (54) of the partition wall (44) has a front axial end (84) which extends beyond the transverse wall (42) and which forms a bearing surface for the contact plate (22). Contacteur selon l'une quelconque des revendications précédentes, caractérisé en ce que le fût axial (54) comporte un alésage central (59) qui comporte un segment arrière (58) dans lequel est guidé un tronçon arrière (74) de la tige de commande (20), et un segment avant (60) de diamètre élargi.Contactor according to any one of the claims previous, characterized in that the axial barrel (54) has a central bore (59) which includes a rear segment (58) in which is guided a rear section (74) of the control rod (20), and a front segment (60) of enlarged diameter. Contacteur selon la revendication 6, caractérisé en ce que la plaque de contact (22) est montée coulissante sur un tronçon intermédiaire (76) de la tige de commande (20), en ce qu'un ressort hélicoïdal de compression (78) est interposé entre un collet radial externe (80), agencé à l'arrière du tronçon intermédiaire (76), et la plaque de contact (22) pour solliciter cette dernière vers une position avancée, et en ce que le ressort (78), qui est enroulé autour du tronçon intermédiaire (76), est reçu avec ce dernier dans le segment avant élargi (60) du fût axial (54) lorsque la tige de commande (20) occupe une position reculée de repos.Contactor according to claim 6, characterized in that the contact plate (22) is slidably mounted on a intermediate section (76) of the control rod (20), in that a helical compression spring (78) is interposed between an external radial collar (80), arranged at the rear of the section intermediate (76), and the contact plate (22) to urge the latter towards an advanced position, and in that the spring (78), which is wound around the intermediate section (76), is received with the latter in the widened front segment (60) of the axial shaft (54) when the control rod (20) occupies a retreated position of rest. Contacteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la paroi transversale (42) de la cloison de séparation (44) comporte des nervures de rigidification (86).Contactor according to any one of the claims previous, characterized in that the transverse wall (42) of the partition wall (44) has ribs of stiffening (86). Contacteur selon l'une quelconque des revendications 2 à 8, caractérisé en ce que le capot (32) comporte une face transversale (72) qui est tournée vers l'arrière, qui est agencée à la limite des deux compartiments (34, 36) du capot (32), et contre laquelle la paroi transversale (42) de la cloison (44) est en appui axialement vers l'avant par un bord périphérique (70).Contactor according to any one of the claims 2 to 8, characterized in that the cover (32) has a face transverse (72) which faces backwards, which is arranged at the limit of the two compartments (34, 36) of the cover (32), and against which the transverse wall (42) of the partition (44) is supported axially forwards by an edge peripheral (70). Contacteur selon l'une quelconque des revendications 2 à 9, caractérisé en ce que le compartiment arrière (36) du capot (32) dans lequel est reçu le circuit électronique (38) est sensiblement de forme annulaire, autour du fût axial (54) de la cloison de séparation (44).Contactor according to any one of Claims 2 to 9, characterized in that the compartment rear (36) of the cover (32) in which the circuit is received electronic (38) is substantially annular in shape, around the axial shaft (54) of the partition wall (44).
EP98101171A 1997-02-14 1998-01-23 Starter contactor for motor vehicule having perfectionate protection means of electronic circuit Expired - Lifetime EP0859394B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9701855 1997-02-14
FR9701855A FR2759810B1 (en) 1997-02-14 1997-02-14 CONTACTOR FOR A MOTOR VEHICLE STARTER COMPRISING IMPROVED MEANS OF PROTECTION OF AN ELECTRONIC CIRCUIT

Publications (2)

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EP0859394A1 true EP0859394A1 (en) 1998-08-19
EP0859394B1 EP0859394B1 (en) 2003-12-03

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EP98101171A Expired - Lifetime EP0859394B1 (en) 1997-02-14 1998-01-23 Starter contactor for motor vehicule having perfectionate protection means of electronic circuit

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US (2) US5990771A (en)
EP (1) EP0859394B1 (en)
JP (1) JP4119512B2 (en)
DE (1) DE69820134T2 (en)
ES (1) ES2212149T3 (en)
FR (1) FR2759810B1 (en)

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Also Published As

Publication number Publication date
JP4119512B2 (en) 2008-07-16
DE69820134D1 (en) 2004-01-15
EP0859394B1 (en) 2003-12-03
US6229415B1 (en) 2001-05-08
ES2212149T3 (en) 2004-07-16
FR2759810B1 (en) 1999-04-09
FR2759810A1 (en) 1998-08-21
JPH10308152A (en) 1998-11-17
US5990771A (en) 1999-11-23
DE69820134T2 (en) 2004-10-14

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