EP0789379A1 - Starter of motor vehicle having a sealing joint carried by an operating rod - Google Patents

Starter of motor vehicle having a sealing joint carried by an operating rod Download PDF

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Publication number
EP0789379A1
EP0789379A1 EP97101274A EP97101274A EP0789379A1 EP 0789379 A1 EP0789379 A1 EP 0789379A1 EP 97101274 A EP97101274 A EP 97101274A EP 97101274 A EP97101274 A EP 97101274A EP 0789379 A1 EP0789379 A1 EP 0789379A1
Authority
EP
European Patent Office
Prior art keywords
contactor
rod
control rod
annular
seal
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.)
Ceased
Application number
EP97101274A
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German (de)
French (fr)
Inventor
Carsten Bohnenkamp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Equipements Electriques Moteur SAS
Original Assignee
Valeo Equipements Electriques Moteur SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Equipements Electriques Moteur SAS filed Critical Valeo Equipements Electriques Moteur SAS
Publication of EP0789379A1 publication Critical patent/EP0789379A1/en
Ceased legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
    • F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
    • F02N15/067—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement the starter comprising an electro-magnetically actuated lever
    • 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 motor vehicle starter provided with an internal seal carried by a control rod.
  • the invention relates more precisely to a contactor for a motor vehicle starter, of the type in which a control rod of a movable contact is capable of sliding axially under the action of a movable core, between a retracted position of rest and an active forward position, of the type in which the control rod comprises a guide section which slides in a guide orifice arranged in a magnetic polar mass which axially separates the rear part of the contactor, in which the movable core slides, and the part front of the contactor which contains the movable contact, and of the type in which means are provided for sealing between the front and rear parts of the contactor.
  • this seal provides a permanent seal between the front and rear parts of the contactor so that, when the mobile core moves in the rear part towards the position in which it urges the rod towards its active position, the mobile core tends to compress the air trapped between the movable core and the polar mass, which, at the end of the race, tends to slow its progression and therefore that of the control rod.
  • the contactor 10 which is shown in the figures comprises a substantially cylindrical housing 12 of axis A1 which is closed at a front axial end 14 by a cover 16.
  • the cover 16 carries two axial terminals 18, 20 which are respectively connected to a storage battery (not shown) of the vehicle and to a starter motor (not shown) and which each comprise a contact head 22, 24 arranged at the inside the housing 12.
  • the contactor 10 is separated axially into two parts, respectively front 26 and rear 28, by a transverse polar mass 30.
  • the rear part 28 of the contactor 10 comprises an annular inductor winding 32 intended to create, with the polar mass 30, a magnetic field capable of causing the axial displacement of a movable core 34 between a retracted position shown in FIG. 1 and a position projection shown in Figure 3.
  • the movable core 34 being intended to axially move a control rod 36 between a retracted rest position shown in FIGS. 1 and 2 and an active advanced position shown in FIG. 3. In the active position, the control rod 36 axially contacts a contact movable 38 against the contact heads 22, 24 of the terminals 18, 20 so as to connect them electrically in order to supply the starter motor with electric current.
  • the control rod 36 comprises a cylindrical guide section 40 which is capable of sliding in a guide orifice 42 of the pole piece 30.
  • the cylindrical guide section of the control rod 36 extends in the rear part 28 of the contactor 10 so that the movable core 34 can act on its rear end 44 in order to control its translation between its retracted and advanced positions.
  • the control rod 36 also comprises a cylindrical front section 46, which is separated from the rear guide section 40 by an external radial collar 48 and on which the movable contact 38 is mounted axially movable.
  • a compression return spring 58 is mounted axially between the cover 16 and a front end 50 of the control rod 36 so as to urge the latter towards its rest position shown in FIGS. 1 and 2.
  • annular O-ring 52 is mounted at the front end 54 of the rear guide section 40 of the control rod 36, bearing against the radial collar 48.
  • annular O-ring is thus tightened axially between the annular bearing surface 56 of the polar mass 30 and the radial collar. 48, the rear face 60 of which, against which the seal 52 bears, is conical, substantially of the same conicity as the annular seat 56.
  • the O-ring 52 provides a perfect seal between the front 26 and rear 28 parts of the contactor 10.
  • this first phase it causes the start of the movement of a shaft 62 for controlling the movements of a starter starter pinion (not shown).
  • the seal 52 is in abutment against its conical bearing 56 so that the movable core 34 tends to compress the air initially trapped between a front face 64 of the movable core 34 and a rear face 66 of the mass polar 30, which tends to slow the movement of the movable core 34.
  • This slowing down is desirable because it makes it possible to match the speed of movement of the movable core 34 with that of the control assembly of the starter pinion whose inertia is high.
  • control rod 36 is made of plastic and the annular seal is made integrally with the radial collar 48.
  • the seal is formed by a sharp annular edge 70 of the rear face 60 of the radial collar 48 and bears against the conical bearing 56 when the control rod 36 is in rest position.
  • an axial cylindrical lip 72 extends rearwards from the external radial collar 48, around the rear end 54 of the guide section 40 of the rod 36, to also come in support against the conical bearing 56 of the pole piece 30 when the rod 36 is in the rest position.
  • the edge 70 or the axial lip 72 of flexible elastomeric material are preferably produced simultaneously with the control rod 36 by bi-material injection.

Abstract

The contactor for a vehicle starter includes a control shaft (36) with a mobile contact (38) which is able to slide axially under the action of a mobile core (34) between a retracted rest position and an advanced, active position. The control rod includes a guide section (40) which slides in a guiding orifice (42) arranged within a magnetic polar mass (30) which separates axially the rear part of the contactor (28) in which the mobile core moves, and the front part of the contactor (26) which contains the mobile contact. A seal (52) is provided and is carried by the control shaft (36), co-operating with a door formed in the polar mass when the control shaft is in its retracted rest position.

Description

L'invention concerne un contacteur pour un démarreur de véhicule automobile muni d'un joint d'étanchéité interne porté par une tige de commande.The invention relates to a contactor for a motor vehicle starter provided with an internal seal carried by a control rod.

L'invention concerne plus précisément un contacteur pour un démarreur de véhicule automobile, du type dans lequel une tige de commande d'un contact mobile est susceptible de coulisser axialement sous l'action d'un noyau mobile, entre une position reculée de repos et une position avancée active, du type dans lequel la tige de commande comporte un tronçon de guidage qui coulisse dans un orifice de guidage agencé dans une masse polaire magnétique qui sépare axialement la partie arrière du contacteur, dans laquelle coulisse le noyau mobile, et la partie avant du contacteur qui contient le contact mobile, et du type dans lequel il est prévu des moyens pour assurer l'étanchéité entre les parties avant et arrière du contacteur.The invention relates more precisely to a contactor for a motor vehicle starter, of the type in which a control rod of a movable contact is capable of sliding axially under the action of a movable core, between a retracted position of rest and an active forward position, of the type in which the control rod comprises a guide section which slides in a guide orifice arranged in a magnetic polar mass which axially separates the rear part of the contactor, in which the movable core slides, and the part front of the contactor which contains the movable contact, and of the type in which means are provided for sealing between the front and rear parts of the contactor.

Afin de réaliser cette étanchéité, il a déjà été propose d'agencer un joint annulaire, porté par la masse polaire magnétique, qui coopère avec une surface cylindrique de la tige de commande lorsque celle-ci se déplace entre ses positions reculée et avancée.In order to achieve this seal, it has already been proposed to arrange an annular seal, carried by the magnetic polar mass, which cooperates with a cylindrical surface of the control rod when the latter moves between its retracted and advanced positions.

Un tel joint est alors soumis aux frottements sur la tige lorsque celle-ci coulisse, ce qui est susceptible d'entraîner son usure progressive pouvant conduire à des défauts d'étanchéité.Such a seal is then subjected to friction on the rod when the latter slides, which is liable to cause its progressive wear which can lead to leaks.

Par ailleurs, ce joint assure une étanchéité permanente entre les parties avant et arrière du contacteur si bien que, lorsque le noyau mobile se déplace dans la partie arrière vers la position dans laquelle il sollicite la tige vers sa position active, le noyau mobile tend à comprimer l'air emprisonné entre le noyau mobile et la masse polaire, ce qui, en fin de course, tend à ralentir sa progression et donc celle de la tige de commande.Furthermore, this seal provides a permanent seal between the front and rear parts of the contactor so that, when the mobile core moves in the rear part towards the position in which it urges the rod towards its active position, the mobile core tends to compress the air trapped between the movable core and the polar mass, which, at the end of the race, tends to slow its progression and therefore that of the control rod.

De la sorte, il peut en résulter un contact insuffisamment franc du contact mobile sur les bornes susceptible de provoquer la. formation d'arcs électriques qui sont néfastes tant à la durée de vie du contact mobile qu'à celle des bornes.In this way, it may result in insufficiently frank contact of the movable contact on the terminals likely to cause the. formation of electric arcs which are harmful both to the life of the moving contact and to that of the terminals.

D'autres caractéristiques et avantages de l'invention apparaîtront 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 en coupe axiale d'un contacteur conforme aux enseignements de l'invention, représenté en position de repos de la tige de commande et du noyau mobile ;
  • la figure 2 est une vue similaire à celle de la figure 1 dans laquelle le noyau mobile arrive au contact de la tige de commande ;
  • la figure 3 est une vue similaire à celle de la figure 1 dans laquelle la tige de commande est représentée en position avancée ;
  • la figure 4 est une vue de détail représentant un second mode de réalisation de l'invention ;
  • la figure 5 est une vue similaire à celle de la figure 4, dans laquelle on a représenté un troisième mode de réalisation de l'invention.
Other characteristics and advantages of the invention will appear on reading the following detailed description for the understanding of which reference will be made to the appended drawings in which:
  • Figure 1 is an axial sectional view of a contactor according to the teachings of the invention, shown in the rest position of the control rod and the movable core;
  • Figure 2 is a view similar to that of Figure 1 in which the movable core comes into contact with the control rod;
  • Figure 3 is a view similar to that of Figure 1 in which the control rod is shown in the advanced position;
  • Figure 4 is a detail view showing a second embodiment of the invention;
  • Figure 5 is a view similar to that of Figure 4, in which there is shown a third embodiment of the invention.

Le contacteur 10 qui est représenté sur les figures comporte un boîtier sensiblement cylindrique 12 d'axe A1 qui est fermé à une extrémité axiale avant 14 par un couvercle 16.The contactor 10 which is shown in the figures comprises a substantially cylindrical housing 12 of axis A1 which is closed at a front axial end 14 by a cover 16.

Le couvercle 16 porte deux bornes axiales 18, 20 qui sont reliées respectivement à une batterie d'accumulateur (non représentée) du véhicule et à un moteur de démarreur (non représenté) et qui comportent chacune une tête de contact 22, 24 agencées à l'intérieur du boîtier 12.The cover 16 carries two axial terminals 18, 20 which are respectively connected to a storage battery (not shown) of the vehicle and to a starter motor (not shown) and which each comprise a contact head 22, 24 arranged at the inside the housing 12.

Le contacteur 10 est séparé axialement en deux parties, respectivement avant 26 et arrière 28, par une masse polaire transversale 30.The contactor 10 is separated axially into two parts, respectively front 26 and rear 28, by a transverse polar mass 30.

La partie arrière 28 du contacteur 10 comporte un bobinage inducteur 32 annulaire destiné à créer, avec la masse polaire 30, un champ magnétique propre à provoquer le déplacement axial d'un noyau mobile 34 entre une position reculée représentée sur la figure 1 et une position avancée représentée à la figure 3.The rear part 28 of the contactor 10 comprises an annular inductor winding 32 intended to create, with the polar mass 30, a magnetic field capable of causing the axial displacement of a movable core 34 between a retracted position shown in FIG. 1 and a position projection shown in Figure 3.

Le noyau mobile 34 étant destiné à déplacer axialement une tige de commande 36 entre une position reculée de repos représentée aux figures 1 et 2 et une position avancée active représentée à la figure 3. En position active, la tige de commande 36 plaque axialement un contact mobile 38 contre les têtes de contact 22, 24 des bornes 18, 20 de manière à les relier électriquement dans le but d'alimenter le moteur du démarreur en courant électrique.The movable core 34 being intended to axially move a control rod 36 between a retracted rest position shown in FIGS. 1 and 2 and an active advanced position shown in FIG. 3. In the active position, the control rod 36 axially contacts a contact movable 38 against the contact heads 22, 24 of the terminals 18, 20 so as to connect them electrically in order to supply the starter motor with electric current.

La tige de commande 36 comporte un tronçon de guidage cylindrique 40 qui est susceptible de coulisser dans un orifice de guidage 42 de la masse polaire 30. Le tronçon cylindrique de guidage de la tige de commande 36 s'étend dans la partie arrière 28 du contacteur 10 de manière que le noyau mobile 34 puisse agir sur son extrémité arrière 44 afin de commander sa translation entre ses positions reculée et avancée.The control rod 36 comprises a cylindrical guide section 40 which is capable of sliding in a guide orifice 42 of the pole piece 30. The cylindrical guide section of the control rod 36 extends in the rear part 28 of the contactor 10 so that the movable core 34 can act on its rear end 44 in order to control its translation between its retracted and advanced positions.

La tige de commande 36 comporte également un tronçon avant cylindrique 46, qui est séparé du tronçon arrière de guidage 40 par un collet radial externe 48 et sur lequel le contact mobile 38 est monté mobile axialement.The control rod 36 also comprises a cylindrical front section 46, which is separated from the rear guide section 40 by an external radial collar 48 and on which the movable contact 38 is mounted axially movable.

Un ressort de rappel de compression 58 est monté axialement entre le couvercle 16 et une extrémité avant 50 de la tige de commande 36 de manière à solliciter celle-ci vers sa position de repos représentée sur les figures 1 et 2.A compression return spring 58 is mounted axially between the cover 16 and a front end 50 of the control rod 36 so as to urge the latter towards its rest position shown in FIGS. 1 and 2.

Selon un premier mode de réalisation représenté sur les figures 1 à 3, un joint annulaire torique 52 est monté à l'extrémité avant 54 du tronçon arrière de guidage 40 de la tige de commande 36, en appui contre le collet radial 48.According to a first embodiment represented in FIGS. 1 to 3, an annular O-ring 52 is mounted at the front end 54 of the rear guide section 40 of the control rod 36, bearing against the radial collar 48.

Lorsque la tige de commande 36 est forcée par son ressort de rappel 58 vers sa position reculée de repos, le joint torique 52 est en appui contre une portée annulaire conique 56 qui est formée autour de l'extrémité avant de l'orifice de guidage 42 de la masse polaire 30.When the control rod 36 is forced by its return spring 58 towards its retracted rest position, the O-ring 52 is in abutment against a conical annular bearing 56 which is formed around the front end of the guide orifice 42 of the polar mass 30.

Le joint torique annulaire est ainsi serré axialement entre la portée annulaire 56 de la masse polaire 30 et le collet radial 48 dont la face arrière 60, contre laquelle le joint 52 est en appui, est conique, sensiblement de même conicité que la portée annulaire 56.The annular O-ring is thus tightened axially between the annular bearing surface 56 of the polar mass 30 and the radial collar. 48, the rear face 60 of which, against which the seal 52 bears, is conical, substantially of the same conicity as the annular seat 56.

De la sorte, lorsque la tige de commande est en position de repos, ce qui est sa position la plus fréquente, le joint torique 52 assure une étanchéité parfaite entre les parties avant 26 et arrière 28 du contacteur 10.In this way, when the control rod is in the rest position, which is its most frequent position, the O-ring 52 provides a perfect seal between the front 26 and rear 28 parts of the contactor 10.

Lorsque le noyau mobile 34 se déplace vers l'avant depuis sa position de repos représentée sur la figure 1, sous l'effet d'un champ magnétique créé par un courant circulant dans le bobinage annulaire 32, il n'est pas en contact, dans une première phase de course, avec la tige de commande 36 du contact mobile 38.When the movable core 34 moves forward from its rest position shown in FIG. 1, under the effect of a magnetic field created by a current flowing in the annular winding 32, it is not in contact, in a first stroke phase, with the control rod 36 of the movable contact 38.

Durant cette première phase, il provoque le début du déplacement d'un arbre 62 de commande des déplacements d'un pignon de lanceur du démarreur (non représenté). Durant cette phase, le joint d'étanchéité 52 est en appui contre sa portée conique 56 de sorte que le noyau mobile 34 tend à comprimer l'air initialement emprisonné entre une face avant 64 du noyau mobile 34 et une face arrière 66 de la masse polaire 30, ce qui tend à ralentir le déplacement du noyau mobile 34.During this first phase, it causes the start of the movement of a shaft 62 for controlling the movements of a starter starter pinion (not shown). During this phase, the seal 52 is in abutment against its conical bearing 56 so that the movable core 34 tends to compress the air initially trapped between a front face 64 of the movable core 34 and a rear face 66 of the mass polar 30, which tends to slow the movement of the movable core 34.

Ce ralentissement est souhaitable car il permet d'accorder la vitesse de déplacement du noyau mobile 34 avec celle de l'ensemble de commande du pignon du lanceur dont l'inertie est importante.This slowing down is desirable because it makes it possible to match the speed of movement of the movable core 34 with that of the control assembly of the starter pinion whose inertia is high.

Lorsque la face avant 64 du noyau mobile 34 arrive au contact de l'extrémité arrière 44 du tronçon de guidage 40 de la tige de commande 36, ainsi que cela est représenté sur la figure 2, le pignon de lanceur a déjà subi une accélération suffisamment importante et sa vitesse est suffisante pour qu'il n'y ait plus besoin de freiner les déplacements du noyau mobile 34.When the front face 64 of the movable core 34 comes into contact with the rear end 44 of the guide section 40 of the control rod 36, as shown in FIG. 2, the starter pinion has already undergone sufficient acceleration important and its speed is sufficient so that there is no longer any need to brake the displacements of the movable core 34.

De la sorte, lorsque le noyau mobile 34 poursuit son déplacement vers sa position avancée représentée à la figure 3, il entraîne alors avec lui la tige de commande 36 et provoque ainsi le décollement du joint 52 de sa portée conique 56.In this way, when the movable core 34 continues to move towards its advanced position shown in FIG. 3, it then drives with it the control rod 36 and thus causes the seal 52 to come off from its conical bearing 56.

De la sorte, l'étanchéité entre les parties avant 26 et arrière 28 du contacteur n'est plus assurée et l'air comprimé dans la partie arrière du contacteur 10 est susceptible de s'évacuer vers la partie avant 26, ce qui limite de manière importante la force de freinage due à la résistance de l'air comprimé.In this way, the seal between the front 26 and rear 28 parts of the contactor is no longer ensured and the compressed air in the rear part of the contactor 10 is liable to be evacuated towards the front part 26, which limits significantly the braking force due to the resistance of the compressed air.

Lorsque l'on cesse d'alimenter le bobinage inducteur 32, le noyau mobile 34 est ramené vers sa position de repos par un ressort de rappel 68 et la tige de commande 36 est elle-même ramenée vers sa position de repos par son ressort de rappel 58 jusqu'à ce que le joint torique 52 soit de nouveau en appui contre la portée conique 56, rétablissant ainsi l'étanchéité entre les parties avant 26 et arrière 28 du contacteur 10.When the supply of the field winding 32 is stopped, the movable core 34 is returned to its rest position by a return spring 68 and the control rod 36 is itself returned to its rest position by its spring reminder 58 until the O-ring 52 is again in abutment against the conical bearing 56, thus restoring the seal between the front 26 and rear 28 parts of the contactor 10.

De la sorte, l'étanchéité interne du contacteur 10 n'est supprimée que lorsque l'on sollicite le moteur électrique du démarreur, ce qui représente un temps d'utilisation minime comparé à la durée de vie d'un véhicule dans lequel le démarreur est implanté.In this way, the internal tightness of the contactor 10 is only removed when the electric motor of the starter is used, which represents a minimal time of use compared to the service life of a vehicle in which the starter is implanted.

On a représenté sur les figures 4 et 5 deux variantes d'un second mode de réalisation de l'invention.There are shown in Figures 4 and 5 two variants of a second embodiment of the invention.

Dans ce mode de réalisation, la tige de commande 36 est réalisée en matière plastique et le joint d'étanchéité annulaire est réalisé venu de matière avec le collet radial 48.In this embodiment, the control rod 36 is made of plastic and the annular seal is made integrally with the radial collar 48.

Dans la variante de réalisation représentée à la figure 4, le joint d'étanchéité est formé par une arête vive 70 annulaire de la face arrière 60 du collet radial 48 et s'appuie contre la portée conique 56 lorsque la tige de commande 36 est en position de repos.In the alternative embodiment shown in FIG. 4, the seal is formed by a sharp annular edge 70 of the rear face 60 of the radial collar 48 and bears against the conical bearing 56 when the control rod 36 is in rest position.

Dans la variante représentée à la figure 5, une lèvre cylindrique axiale 72 s'étend vers l'arrière depuis le collet radial externe 48, autour de l'extrémité arrière 54 du tronçon de guidage 40 de la tige 36, pour venir elle aussi en appui contre la portée conique 56 de la masse polaire 30 lorsque la tige 36 est en position de repos.In the variant shown in FIG. 5, an axial cylindrical lip 72 extends rearwards from the external radial collar 48, around the rear end 54 of the guide section 40 of the rod 36, to also come in support against the conical bearing 56 of the pole piece 30 when the rod 36 is in the rest position.

Ces deux variantes de réalisation permettent de s'affranchir d'un joint d'étanchéité supplémentaire.These two alternative embodiments make it possible to dispense with an additional seal.

En variante, non représentée, on peut également prévoir de réaliser l'arête vive ou la lèvre cylindrique axiale 72 en matériau élastomère souple afin d'améliorer l'étanchéité du contact avec la portée conique 56 et afin de pouvoir accepter une tolérance sur la position axiale exacte de la position de repos de la tige de commande 36.As a variant, not shown, provision may also be made to produce the sharp edge or the axial cylindrical lip 72 of flexible elastomeric material in order to improve the sealing of the contact with the conical bearing 56 and in order to be able to accept a tolerance on the position exact axial position of the rest position of the control rod 36.

L'arête 70 ou la lèvre axiale 72 en matériau élastomère souple sont de préférence réalisée simultanément avec la tige de commande 36 par injection bimatière.The edge 70 or the axial lip 72 of flexible elastomeric material are preferably produced simultaneously with the control rod 36 by bi-material injection.

Claims (8)

Contacteur pour un démarreur de véhicule automobile, du type dans lequel une tige de commande (36) d'un contact mobile (38) est susceptible de coulisser axialement, sous l'action d'un noyau mobile (34), entre une position reculée de repos et une position avancée active, du type dans lequel la tige de commande (36) comporte un tronçon de guidage (40) qui coulisse dans un orifice de guidage (42) agencé dans une masse polaire magnétique (30) qui sépare axialement la partie arrière (28) du contacteur (10), dans laquelle coulisse le noyau mobile (34), et la partie avant (26) du contacteur (10) qui contient le contact mobile (38), et du type dans lequel il est prévu des moyens (52, 70, 72) pour assurer l'étanchéité entre les parties avant (26) et arrière (28) du contacteur (10), caractérisé en ce les moyens d'étanchéité (52, 70, 72) sont portés par la tige de commande (36) et coopèrent avec une portée (56) de la masse polaire (30) lorsque la tige (36) est en position reculée de repos.Contactor for a motor vehicle starter, of the type in which a control rod (36) of a movable contact (38) is capable of sliding axially, under the action of a movable core (34), between a retracted position of rest and an active forward position, of the type in which the control rod (36) comprises a guide section (40) which slides in a guide orifice (42) arranged in a magnetic polar mass (30) which axially separates the rear part (28) of the contactor (10), in which the movable core slides (34), and the front part (26) of the contactor (10) which contains the movable contact (38), and of the type in which it is provided means (52, 70, 72) for sealing between the front (26) and rear (28) parts of the contactor (10), characterized in that the sealing means (52, 70, 72) are carried by the control rod (36) and cooperate with a bearing surface (56) of the polar mass (30) when the rod (36) is in the re position rest abutment. Contacteur selon la revendication 1, caractérisé en ce que la tige de commande (36) porte un joint annulaire (52, 70, 72) qui, en position de repos de la tige (36), est en appui sur une portée annulaire (56) de la masse polaire (30) agencée autour de l'extrémité avant de l'orifice de guidage (42), et en ce que des moyens de rappel élastique (58) de la tige (36) vers sa position de repos plaquent le joint (52, 70, 72) contre sa portée (56).Contactor according to claim 1, characterized in that the control rod (36) carries an annular seal (52, 70, 72) which, in the rest position of the rod (36), is supported on an annular bearing (56 ) of the polar mass (30) arranged around the front end of the guide orifice (42), and in that elastic return means (58) of the rod (36) towards its rest position press the seal (52, 70, 72) against its bearing surface (56). Contacteur selon la revendication 2, caractérisé en ce que la portée annulaire (56) du joint (52, 70, 72) est une surface conique évasée vers l'avant du contacteur (10).Contactor according to claim 2, characterized in that the annular bearing surface (56) of the seal (52, 70, 72) is a conical surface flared towards the front of the contactor (10). Contacteur selon la revendication 3, caractérisé en ce que le joint est un joint annulaire rapporté (52) qui est monté à l'extrémité avant (54) du tronçon de guidage (40) de la tige de commande (36) et qui est en appui, axialement vers l'avant, contre un collet radial externe (48) qui délimite, à l'avant, le tronçon de guidage (40) de la tige (36).Contactor according to claim 3, characterized in that the seal is an attached annular seal (52) which is mounted at the front end (54) of the guide section (40) of the control rod (36) and which is in bearing, axially forwards, against an external radial collar (48) which delimits, at the front, the guide section (40) of the rod (36). Contacteur selon la revendication 3, caractérisé en ce que la tige de commande (36) est réalisée en matière plastique, en ce que le tronçon de guidage (40) est délimité à l'avant par un collet radial externe (48), et en ce que le collet radial (48) comporte une face arrière (60) qui forme le joint d'étanchéité (70, 72).Contactor according to claim 3, characterized in that the control rod (36) is made of plastic, in that the guide section (40) is delimited at the front by an external radial collar (48), and in that the radial collar (48) has a rear face (60) which forms the seal (70, 72). Contacteur selon la revendication 5, caractérisé en ce que la face arrière (60) du collet radial (48) comporte une arête vive (70) annulaire qui est en appui contre la portée annulaire (56) de la masse polaire (30) lorsque la tige (36) est en position reculée de repos.Contactor according to claim 5, characterized in that the rear face (60) of the radial collar (48) has a sharp annular edge (70) which bears against the annular bearing surface (56) of the polar mass (30) when the rod (36) is in the retracted rest position. Contacteur selon la revendication 5, caractérisé en ce que la face arrière (60) du collet radial (48) de la tige de commande (36) comporte une lèvre annulaire (72) qui s'étend axialement vers l'arrière autour d'une extrémité avant (54) du tronçon de guidage (40) de la tige (36), en ce que la lèvre annulaire (72) est en appui contre la portée annulaire (56) de la masse polaire (30) lorsque la tige (36) est en position reculée de repos, et en ce que la lèvre annulaire (72) est réalisée venue de matière avec le collet radial (48) de la tige (36).Contactor according to claim 5, characterized in that the rear face (60) of the radial collar (48) of the control rod (36) has an annular lip (72) which extends axially towards the rear around a front end (54) of the guide section (40) of the rod (36), in that the annular lip (72) bears against the annular bearing surface (56) of the polar mass (30) when the rod (36 ) is in the retracted position of rest, and in that the annular lip (72) is produced integrally with the radial collar (48) of the rod (36). Contacteur selon la revendication 7, caractérisé en ce que la lèvre annulaire axiale (72) est réalisée en matériau souple.Contactor according to claim 7, characterized in that the axial annular lip (72) is made of flexible material.
EP97101274A 1996-02-09 1997-01-28 Starter of motor vehicle having a sealing joint carried by an operating rod Ceased EP0789379A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9601594A FR2744768B1 (en) 1996-02-09 1996-02-09 STARTER OF A MOTOR VEHICLE PROVIDED WITH AN INTERNAL SEAL CARRIED BY A CONTROL ROD
FR9601594 1996-02-09

Publications (1)

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EP0789379A1 true EP0789379A1 (en) 1997-08-13

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Application Number Title Priority Date Filing Date
EP97101274A Ceased EP0789379A1 (en) 1996-02-09 1997-01-28 Starter of motor vehicle having a sealing joint carried by an operating rod

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EP (1) EP0789379A1 (en)
FR (1) FR2744768B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013174253A1 (en) * 2012-05-21 2013-11-28 博世汽车部件(长沙)有限公司 Electromagnetic switch, manufacturing method therefor, and vehicle engine
WO2018206469A1 (en) * 2017-05-12 2018-11-15 Valeo Equipements Electriques Moteur Starter switch comprising a sealing device and starter comprising such a switch
CN110867346A (en) * 2018-08-27 2020-03-06 法雷奥电机设备公司 Contactor for a starter provided with an improved sealing device and starter equipped with such a contactor
CN112017912A (en) * 2019-05-30 2020-12-01 三菱电机株式会社 Electromagnetic switch device for auxiliary relay and starter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0058374A2 (en) * 1981-02-10 1982-08-25 Mitsubishi Denki Kabushiki Kaisha Magnetic switch
FR2629521A1 (en) * 1988-04-01 1989-10-06 Mitsubishi Electric Corp
US4983941A (en) * 1988-11-24 1991-01-08 Mitsubishi Denki Kabushiki Kaisha Electromagnetically operated switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0058374A2 (en) * 1981-02-10 1982-08-25 Mitsubishi Denki Kabushiki Kaisha Magnetic switch
FR2629521A1 (en) * 1988-04-01 1989-10-06 Mitsubishi Electric Corp
US4983941A (en) * 1988-11-24 1991-01-08 Mitsubishi Denki Kabushiki Kaisha Electromagnetically operated switch

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013174253A1 (en) * 2012-05-21 2013-11-28 博世汽车部件(长沙)有限公司 Electromagnetic switch, manufacturing method therefor, and vehicle engine
CN103426684A (en) * 2012-05-21 2013-12-04 博世汽车部件(长沙)有限公司 Electromagnetic switch, manufacturing method of electromagnetic switch and vehicle starter
CN103426684B (en) * 2012-05-21 2017-02-08 博世汽车部件(长沙)有限公司 Electromagnetic switch, manufacturing method of electromagnetic switch and vehicle starter
WO2018206469A1 (en) * 2017-05-12 2018-11-15 Valeo Equipements Electriques Moteur Starter switch comprising a sealing device and starter comprising such a switch
FR3066312A1 (en) * 2017-05-12 2018-11-16 Valeo Equipements Electriques Moteur STARTER CONTACTOR COMPRISING A SEALING DEVICE, AND STARTER COMPRISING SUCH A CONTACTOR
CN110770872A (en) * 2017-05-12 2020-02-07 法雷奥电机设备公司 Starter switch comprising a sealing device and starter comprising such a switch
US11295916B2 (en) 2017-05-12 2022-04-05 Valeo Equipements Electriques Moteur Starter contactor comprising a sealing device and starter comprising such a contactor
CN110867346A (en) * 2018-08-27 2020-03-06 法雷奥电机设备公司 Contactor for a starter provided with an improved sealing device and starter equipped with such a contactor
CN112017912A (en) * 2019-05-30 2020-12-01 三菱电机株式会社 Electromagnetic switch device for auxiliary relay and starter
CN112017912B (en) * 2019-05-30 2022-03-29 三菱电机株式会社 Electromagnetic switch device for auxiliary relay and starter

Also Published As

Publication number Publication date
FR2744768B1 (en) 1998-03-06
FR2744768A1 (en) 1997-08-14

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