EP0595698B1 - Contactor for an internal combustion engine starter of an automotive vehicle - Google Patents

Contactor for an internal combustion engine starter of an automotive vehicle Download PDF

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Publication number
EP0595698B1
EP0595698B1 EP93402604A EP93402604A EP0595698B1 EP 0595698 B1 EP0595698 B1 EP 0595698B1 EP 93402604 A EP93402604 A EP 93402604A EP 93402604 A EP93402604 A EP 93402604A EP 0595698 B1 EP0595698 B1 EP 0595698B1
Authority
EP
European Patent Office
Prior art keywords
contactor
fixed contacts
contact
hollows
combustion engine
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.)
Expired - Lifetime
Application number
EP93402604A
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German (de)
French (fr)
Other versions
EP0595698A1 (en
Inventor
Virginio Santarelli
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 EP0595698A1 publication Critical patent/EP0595698A1/en
Application granted granted Critical
Publication of EP0595698B1 publication Critical patent/EP0595698B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
    • 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 present invention relates to a contactor for an internal combustion engine starter of motor vehicles.
  • Such a contactor generally comprises a movable core connected to one end of a pivoting lever, the other end of which is connected to the driver of a starter launcher.
  • the movable core When actuated, the movable core moves a movable electrical contact intended to cooperate with fixed contacts which supply the starter motor.
  • the document EP-A-0324264 illustrates a starter contactor in which the movable contact comprises a part with elastic deformation making it possible to avoid the formation of electric arc when approaching the fixed contacts but the active surfaces remain flat and therefore do not resolve not the above mentioned problems.
  • Document DD-A-150669 illustrates forms of convex, concave or striated contact which are not sufficient in themselves to ensure correct reliability of electrical continuity.
  • the present invention overcomes these drawbacks and proposes for this purpose a contactor for an internal combustion engine starter comprising a closing cover equipped with two fixed contacts intended for supplying the starter motor, a movable core actuated by a coil, said core mobile controlling in particular the axial displacement of a mobile contact intended to cooperate with the fixed contacts, and having, vis-à-vis at least one of the fixed contacts, a concave shape, characterized in that the movable contact comprises on each of its faces a recess.
  • FIG. 1 illustrates the assembly of an electromagnetic contactor 10 equipped with a movable core 12 connected to one end of a pivoting lever (not shown), the other end of which is conventionally secured to a driver of the launcher of the starter.
  • the electromagnetic contactor 10 has an external armature or "tank" 14 fixed to a support flange 16.
  • a coil 18 Inside the frame 14 are mounted, around a coil 18, electrical windings 20, 22.
  • One end of the coil 18 is fitted onto a flange 24 carrying at its center a fixed core 26, itself traversed by a sliding rod 28 carrying a movable contact 30.
  • a guide tube 32 Inside the coil 18 is arranged a guide tube 32 in which the movable core 12 is slidably mounted.
  • the contactor 10 also includes a closing cover 34 crossed by terminals or fixed contacts 36, 38.
  • the movable core 12 When the electric windings 20, 22 are supplied, the movable core 12 is moved to the right. A washer 40 secured to the movable core 12 pushes the rod 28 slidably mounted in the fixed core 26, so that the movable contact 30 comes to establish an electrical connection with the two fixed contacts 36, 38, in order to ensure the electrical supply of the starter motor.
  • FIGS. 2 and 3 illustrate the details of construction of the movable contact 30.
  • the movable contact 30 is in the general form of a rectangular plate made of a conductive material such as copper.
  • the movable contact 30 has at its center a circular hole 42 intended for the fitting of the movable contact 30 on a cylindrical shoulder 40 (see FIG. 1) formed on the sliding rod 28.
  • the movable contact 30 has an axis XX perpendicular to the general axis YY of the contactor and is delimited in the direction of its length by two faces ends 44.46.
  • the movable contact 30 comprises, formed of material, two recesses 48.50 opening respectively on its end faces 44.46.
  • One of the recesses 48 is formed on one of the faces 52 of the movable contact 30 while the other recess 50 is formed on the opposite face 54.
  • the movable contact 30 has, in relation to at least one of the fixed contacts 36, 38 a concave shape 50.
  • the recesses 48.50 are preferably obtained by stamping so as to obtain on the face opposite to each recess and opposite them bulges 56 (corresponding to the recess 48) and 58 (corresponding to the recess 50).
  • FIG. 4 illustrates the movable contact 30 in connection with the fixed contact 38.
  • each recess 48.50 has an identical section, the same is true for each of the ends of the fixed contacts 36.38.
  • these contact points may vary slightly during the operation of the contactor, the movable contact 30 having a slight angular tilting relative to the general axis of the contactor.

Description

La présente invention concerne un contacteur pour démarreur de moteur à combustion interne de véhicules automobiles.The present invention relates to a contactor for an internal combustion engine starter of motor vehicles.

Un tel contacteur comporte d'une manière générale un noyau mobile relié à une extrémité d'un levier pivotant dont l'autre extrémité est reliée à l'entraîneur d'un lanceur du démarreur.Such a contactor generally comprises a movable core connected to one end of a pivoting lever, the other end of which is connected to the driver of a starter launcher.

Lors de son actionnement, le noyau mobile déplace un contact électrique mobile destiné à coopérer avec des contacts fixes qui assurent l'alimentation du moteur du démarreur.When actuated, the movable core moves a movable electrical contact intended to cooperate with fixed contacts which supply the starter motor.

On a constaté, malgré toutes les précautions prises lors de la construction d'un tel contacteur pour assurer une étanchéité aussi parfaite que possible, que des particules isolantes parvenaient à pénétrer à l'intérieur et venaient se déposer en particulier sur les contacts fixes, entraînant une discontinuité électrique et donc un non fonctionnement de l'ensemble du démarreur.It was found, despite all the precautions taken during the construction of such a contactor to ensure as perfect a seal as possible, that insulating particles managed to penetrate inside and came to deposit in particular on the fixed contacts, causing an electrical discontinuity and therefore a non-functioning of the starter assembly.

L'expérience montre que cette anomalie est particulièrement fréquente lorsque le contact mobile est plan et vient en appui sur des contacts fixes aux extrémités de forme générale sphérique. En effet, dans un tel contexte, la liaison mécanique et donc électrique s'effectue pour chaque contact fixe en un seul point, toujours le même tout au long du fonctionnement du contacteur. Il suffit alors de seulement quelques particules isolantes pour retrouver l'anomalie précitée c'est-à-dire une interruption de l'alimentation électrique.Experience shows that this anomaly is particularly frequent when the movable contact is flat and comes to bear on fixed contacts at the ends of generally spherical shape. Indeed, in such a context, the mechanical and therefore electrical connection is made for each fixed contact at a single point, always the same throughout the operation of the contactor. It then suffices with only a few insulating particles to find the abovementioned anomaly, that is to say an interruption of the electrical supply.

Le document EP-A-0324264 illustre un contacteur de démarreur dans lequel le contact mobile comporte une pièce à déformation élastique permettant d'éviter la formation d'arc électrique à l'approche des contacts fixes mais les surfaces actives restent planes et ne résolvent donc pas les problèmes sus-mentionnés.The document EP-A-0324264 illustrates a starter contactor in which the movable contact comprises a part with elastic deformation making it possible to avoid the formation of electric arc when approaching the fixed contacts but the active surfaces remain flat and therefore do not resolve not the above mentioned problems.

Le document DD-A-150669 illustre des formes de contact convexe, concave ou striées qui ne suffisent pas par eux-mêmes à assurer une fiabilité correcte de continuité électrique.Document DD-A-150669 illustrates forms of convex, concave or striated contact which are not sufficient in themselves to ensure correct reliability of electrical continuity.

La présente invention résout ces inconvénients et propose à cet effet un contacteur pour démarreur de moteur à combustion interne comprenant un capot de fermeture équipé de deux contacts fixes destinés à l'alimentation du moteur du démarreur, un noyau mobile actionné par une bobine, ledit noyau mobile commandant notamment le déplacement axial d'un contact mobile destiné à coopérer avec les contacts fixes, et présentant, en vis-à-vis d'au moins un des contacts fixes, une forme concave, caractérisé en ce que le contact mobile comporte sur chacune de ses faces une creusure.The present invention overcomes these drawbacks and proposes for this purpose a contactor for an internal combustion engine starter comprising a closing cover equipped with two fixed contacts intended for supplying the starter motor, a movable core actuated by a coil, said core mobile controlling in particular the axial displacement of a mobile contact intended to cooperate with the fixed contacts, and having, vis-à-vis at least one of the fixed contacts, a concave shape, characterized in that the movable contact comprises on each of its faces a recess.

Selon d'autres caractéristiques de l'invention :

  • les creusures sont ménagées suivant l'axe du contact mobile perpendiculaire à l'axe général du contacteur
  • le contact mobile présente sur la face opposée à chacune des creusures et en vis-à-vis de celles-ci un renflement
  • les creusures présentent une section circulaire de rayon inférieur au rayon des extrémités des contacts fixes
  • les creusures et les renflements sont obtenus par emboutissage.
According to other characteristics of the invention:
  • the recesses are formed along the axis of the movable contact perpendicular to the general axis of the contactor
  • the movable contact present on the face opposite to each of the recesses and facing them a bulge
  • the recesses have a circular section of radius less than the radius of the ends of the fixed contacts
  • the recesses and the bulges are obtained by stamping.

L'invention sera mieux comprise avec la description qui va suivre en regard des dessins annexés dans lesquels :

  • la figure 1 est une coupe axiale de l'ensemble d'un contacteur équipé d'un contact mobile suivant l'invention ;
  • la figure 2 illustre à plus grande échelle un tel contact mobile ;
  • la figure 3 est une coupe suivant la ligne X-X de la figure 2 ;
  • la figure 4 est une coupe partielle à échelle agrandie suivant la ligne A-A de la figure 2 sur laquelle le contact mobile est illustré en appui sur un des contacts fixes.
The invention will be better understood with the description which follows with reference to the appended drawings in which:
  • Figure 1 is an axial section of the assembly of a contactor equipped with a movable contact according to the invention;
  • Figure 2 illustrates on a larger scale such a movable contact;
  • Figure 3 is a section along line XX of Figure 2;
  • Figure 4 is a partial section on an enlarged scale along the line AA of Figure 2 on which the movable contact is illustrated by pressing on one of the fixed contacts.

La figure 1 illustre l'ensemble d'un contacteur électromagnétique 10 équipé d'un noyau mobile 12 relié à une extrémité d'un levier pivotant (non représenté) dont l'autre extrémité est solidaire de manière classique d'un entraîneur du lanceur du démarreur.FIG. 1 illustrates the assembly of an electromagnetic contactor 10 equipped with a movable core 12 connected to one end of a pivoting lever (not shown), the other end of which is conventionally secured to a driver of the launcher of the starter.

Le contacteur électromagnétique 10 possède une armature extérieure ou "cuve" 14 fixée à une bride-support 16.The electromagnetic contactor 10 has an external armature or "tank" 14 fixed to a support flange 16.

A l'intérieur de l'armature 14 sont montés, autour d'une bobine 18, des enroulements électriques 20,22. Une extrémité de la bobine 18 est emboîtée sur un flasque 24 portant en son centre un noyau fixe 26, lui-même traversé par une tige coulissante 28 portant un contact mobile 30.Inside the frame 14 are mounted, around a coil 18, electrical windings 20, 22. One end of the coil 18 is fitted onto a flange 24 carrying at its center a fixed core 26, itself traversed by a sliding rod 28 carrying a movable contact 30.

A l'intérieur de la bobine 18 est agencé un tube de guidage 32 dans lequel est monté coulissant le noyau mobile 12.Inside the coil 18 is arranged a guide tube 32 in which the movable core 12 is slidably mounted.

Le contacteur 10 comporte également un capot de fermeture 34 traversé par des bornes ou contacts fixes 36,38.The contactor 10 also includes a closing cover 34 crossed by terminals or fixed contacts 36, 38.

Lorsque les enroulements électriques 20,22 sont alimentés, le noyau mobile 12 est déplacé vers la droite. Une rondelle 40 solidaire du noyau mobile 12 vient pousser la tige 28 montée coulissante dans le noyau fixe 26, de sorte que le contact mobile 30 vient établir une liaison électrique avec les deux contacts fixes 36,38, afin d'assurer l'alimentation électrique du moteur du démarreur.When the electric windings 20, 22 are supplied, the movable core 12 is moved to the right. A washer 40 secured to the movable core 12 pushes the rod 28 slidably mounted in the fixed core 26, so that the movable contact 30 comes to establish an electrical connection with the two fixed contacts 36, 38, in order to ensure the electrical supply of the starter motor.

On se réfère maintenant aux figures 2 et 3 en particulier qui illustrent les détails de réalisation du contact mobile 30.Reference is now made to FIGS. 2 and 3 in particular which illustrate the details of construction of the movable contact 30.

Le contact mobile 30 se présente sous la forme générale d'une plaque rectangulaire réalisée dans un matériau conducteur tel que du cuivre.The movable contact 30 is in the general form of a rectangular plate made of a conductive material such as copper.

Le contact mobile 30 comporte en son centre un trou circulaire 42 destiné à l'emmanchement du contact mobile 30 sur un épaulement cylindrique 40 (voir figure 1) ménagé sur la tige coulissante 28.The movable contact 30 has at its center a circular hole 42 intended for the fitting of the movable contact 30 on a cylindrical shoulder 40 (see FIG. 1) formed on the sliding rod 28.

Le contact mobile 30 présente un axe X-X perpendiculaire à l'axe général Y-Y du contacteur et est délimité dans le sens de sa longueur par deux faces d'extrémités 44,46.The movable contact 30 has an axis XX perpendicular to the general axis YY of the contactor and is delimited in the direction of its length by two faces ends 44.46.

Suivant l'axe X-X, le contact mobile 30 comprend, ménagées de matière, deux creusures 48,50 débouchant respectivement sur ses faces d'extrémités 44,46.Along the axis X-X, the movable contact 30 comprises, formed of material, two recesses 48.50 opening respectively on its end faces 44.46.

L'une des creusures 48 est ménagée sur une des faces 52 du contact mobile 30 tandis que l'autre creusure 50 est ménagée sur la face opposée 54.One of the recesses 48 is formed on one of the faces 52 of the movable contact 30 while the other recess 50 is formed on the opposite face 54.

Ainsi qu'on peut le voir en particulier figure 1, c'est la creusure 50 qui est en vis-à-vis d'un des contacts fixes, le contact 38 dans l'exemple représenté.As can be seen in particular in Figure 1, it is the recess 50 which is opposite one of the fixed contacts, the contact 38 in the example shown.

Autrement dit, le contact mobile 30 présente en vis-à-vis d'au moins un des contacts fixes 36,38 une forme concave 50.In other words, the movable contact 30 has, in relation to at least one of the fixed contacts 36, 38 a concave shape 50.

Les creusures 48,50 sont obtenues de préférence par emboutissage de manière à obtenir sur la face opposée à chaque creusure et en vis-à-vis de celles-ci des renflements 56 (correspondant à la creusure 48) et 58 (correspondant à la creusure 50).The recesses 48.50 are preferably obtained by stamping so as to obtain on the face opposite to each recess and opposite them bulges 56 (corresponding to the recess 48) and 58 (corresponding to the recess 50).

On se réfère maintenant à la figure 4 qui illustre le contact mobile 30 en liaison avec le contact fixe 38.Reference is now made to FIG. 4 which illustrates the movable contact 30 in connection with the fixed contact 38.

On constate que grâce à la creusure 50, et la forme sphérique de l'extrémité 60 du contact fixe 38, la liaison mécanique s'effectue par deux points P1 et P2 et non plus un seul comme dans l'art antérieur.It is noted that thanks to the recess 50, and the spherical shape of the end 60 of the fixed contact 38, the mechanical connection takes place by two points P1 and P2 and no longer just one as in the prior art.

Cette condition est réalisée par le fait que la creusure 50 présente une section circulaire de rayon R inférieur au rayon R' de l'extrémité 60 du contact fixe 38.This condition is achieved by the fact that the recess 50 has a circular section of radius R less than the radius R 'of the end 60 of the fixed contact 38.

Il va de soi que chaque creusure 48,50 présente une section identique, il en est de même pour chacune des extrémités des contacts fixes 36,38.It goes without saying that each recess 48.50 has an identical section, the same is true for each of the ends of the fixed contacts 36.38.

Avec cette structure particulière, lorsque le contact mobile 30 est déplacé vers la droite, sa liaison avec les contacts fixes 36,38 est assurée d'une part par l'un de ses renflements 56 avec le contact fixe 36, d'autre part par l'une de ses creusures 50 avec l'autre contact fixe 38.With this particular structure, when the movable contact 30 is moved to the right, its connection with the fixed contacts 36, 38 is ensured on the one hand by one of its bulges 56 with the fixed contact 36, on the other hand by one of its recesses 50 with the other fixed contact 38.

Il en résulte une liaison par trois points de contact, ces points de contact pouvant varier légèrement au cours du fonctionnement du contacteur, le contact mobile 30 présentant un léger basculement angulaire par rapport à l'axe général du contacteur.This results in a connection by three contact points, these contact points may vary slightly during the operation of the contactor, the movable contact 30 having a slight angular tilting relative to the general axis of the contactor.

Bien entendu, la présente invention ne se limite pas aux formes de réalisation décrites ou représentées mais englobe toute variante que l'homme de l'art pourrait y apporter.Of course, the present invention is not limited to the embodiments described or shown but encompasses any variant that a person skilled in the art could make.

Claims (5)

  1. Contactor for an internal combustion engine starter, comprising a closure cap (34) equipped with two fixed contacts (36, 38) designed to supply the starter motor, a movable core (12) actuated by a coil (18), the said movable core (12) controlling notably the axial movement of a moving contact (30) designed to cooperate with the fixed contacts (36, 38), and having, facing at least one of the fixed contacts (36, 38), a concave shape (50), characterised in that the moving contact (30) has a hollow (48, 50) on each of its faces (52, 54).
  2. Contactor according to Claim 1, characterised in that the hollows (48, 50) are formed along the axis (X-X) of the moving contact (30) perpendicular to the overall axis (Y-Y) of the contactor.
  3. Contactor according to one of the preceding claims, characterised in that the moving contact (30) has, on the opposite face to each of the hollows (48, 50) and facing these, a protrusion (56, 58).
  4. Contactor according to one of Claims 1 to 2, characterised in that the hollows (48, 50) have a circular section of radius (R) less than the radius (R') of the ends (60) of the fixed contacts (36, 38).
  5. Contactor according to one of the preceding claims, characterised in that the hollows (48, 50) and the protrusions (56, 58) are obtained by pressing.
EP93402604A 1992-10-26 1993-10-22 Contactor for an internal combustion engine starter of an automotive vehicle Expired - Lifetime EP0595698B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9212735 1992-10-26
FR9212735A FR2697370B1 (en) 1992-10-26 1992-10-26 Contactor for motor vehicle internal combustion engine starter.

Publications (2)

Publication Number Publication Date
EP0595698A1 EP0595698A1 (en) 1994-05-04
EP0595698B1 true EP0595698B1 (en) 1996-12-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP93402604A Expired - Lifetime EP0595698B1 (en) 1992-10-26 1993-10-22 Contactor for an internal combustion engine starter of an automotive vehicle

Country Status (7)

Country Link
US (1) US5424700A (en)
EP (1) EP0595698B1 (en)
JP (1) JP3651010B2 (en)
BR (1) BR9304297A (en)
DE (1) DE69306533T2 (en)
ES (1) ES2096888T3 (en)
FR (1) FR2697370B1 (en)

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IT1241000B (en) * 1990-10-31 1993-12-27 Magneti Marelli Spa ELECTROMAGNETIC DEVICE TO CONTROL THE POWER SUPPLY TO THE ELECTRIC STARTING MOTOR OF AN INTERNAL COMBUSTION ENGINE FOR MOTOR VEHICLES.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111801757A (en) * 2017-10-12 2020-10-20 通贝国际有限公司 Solid dielectric front side uncharged electrical switching assembly

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JP3651010B2 (en) 2005-05-25
BR9304297A (en) 1994-05-03
EP0595698A1 (en) 1994-05-04
FR2697370B1 (en) 1994-12-02
US5424700A (en) 1995-06-13
ES2096888T3 (en) 1997-03-16
FR2697370A1 (en) 1994-04-29
DE69306533T2 (en) 1997-04-03
JPH06200856A (en) 1994-07-19
DE69306533D1 (en) 1997-01-23

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