EP0778600B1 - Starter contact with integrated return spring and vehicle starter equipped with such a contactor - Google Patents

Starter contact with integrated return spring and vehicle starter equipped with such a contactor Download PDF

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Publication number
EP0778600B1
EP0778600B1 EP19960118027 EP96118027A EP0778600B1 EP 0778600 B1 EP0778600 B1 EP 0778600B1 EP 19960118027 EP19960118027 EP 19960118027 EP 96118027 A EP96118027 A EP 96118027A EP 0778600 B1 EP0778600 B1 EP 0778600B1
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EP
European Patent Office
Prior art keywords
moving contact
rod
housing
axial
contactor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19960118027
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German (de)
French (fr)
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EP0778600A1 (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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Publication of EP0778600A1 publication Critical patent/EP0778600A1/en
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Publication of EP0778600B1 publication Critical patent/EP0778600B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles

Definitions

  • the invention relates to a starter contactor for an internal combustion engine of a motor vehicle according to the preamble of claim 1, as is known for example from document EP-A-595 698.
  • the invention relates more particularly to a starter switch for a motor vehicle, of the type in which a sliding contact is mounted slidingly axially on a central section of a control rod cylindrical between an advanced rest position and a active back position, of the type in which the contact mobile is axially biased towards its rest position by elastic return means, and of the type in which a bearing surface of the movable contact cooperates with a rod abutment surface to determine the rest position of the contactor relative to the rod.
  • the abutment surface of the rod consists of a steel thrust washer which is made axially integral with the control rod by additional fixing means.
  • These additional fixing means are constituted by a claw fixing washer which is fitted by force on a free end of the control rod and which immobilizes the thrust washer against a shoulder radial of the control rod.
  • This embodiment of the stop surface of the rod therefore has the disadvantage of requiring two specific parts which do not perform other functions.
  • the object of the invention is to propose a new design of a contactor which allows reliable and economical mounting of the mobile contact on the control rod.
  • the invention proposes a contactor of the type described above, characterized in that the rod control has a central housing, which passes through it transversely right through, and one side of which transverse rear forms a bearing surface for elastic return means of the mobile contact which are also supported against a rear face of the mobile contact, and in that the mobile contact, in advanced position of rest on the rod, is supported by a front face against a stop face arranged at the front of the central section of the rod.
  • FIG. 1 shows a contactor 10 which comprises a housing 12 of axis X-X inside which a inductor winding 14 is intended to cause, using of a polar mass 16, an axial magnetic field capable of moving a movable core 18 axially between a rear rest position shown on the Figure 1 and a front position, axially offset towards the right considering figure 1.
  • the front axial end 20 of the housing 12 is closed by a cover 22, a transverse wall 24 of which carries a input terminal 26 connected to a battery (not shown) of the motor vehicle and a power supply terminal 28 connected to the electric motor (not shown) of the starter.
  • the terminals 26, 28 each have a terminal head 30, 32 arranged inside the contactor and the heads 30, 32 are intended to be electrically connected by a movable contact 34 in the form of a rectangular plate made of electrically conductive material.
  • the movable contact 34 is arranged transversely in the contactor 10, between the pole ground 16 and the heads terminal 30, 32.
  • the contactor 10 controls the supply of the electric starter motor supplied by the vehicle battery.
  • Movements of the mobile contact 34 in the contactor 10 are controlled via a control rod 38 which can be moved axially from back to front in contactor 10 by the core 18.
  • the rod 38 has a rear guide section 40 which crosses axially the polar mass 16 and of which the rear axial end 42 is controlled by the core mobile 18.
  • the rear guide section 40 is extended by a central section 44, on which the movable contact slides and which is delimited at the rear by a radial collar outer 46 of larger diameter, and, at the front, by a free end 48 of smaller diameter.
  • the central section 44 is therefore delimited axially by two rear radial 49 and front shoulder 51 surfaces.
  • the movable contact 34 has a hole or orifice circular central 50 to allow its mounting sliding, between an advanced rest position and a backward position active, on the central section cylindrical 44 of the rod 38.
  • a thrust washer 52 is engaged on the end free axial 48 of the rod 38 and it is held in bearing against the front radial shoulder surface 51 by a claw washer 53 which is force fitted on the free end 48.
  • a helical compression spring 54 is arranged around the central section 44 of the rod 38, between the external radial collar 46 and a rear face 35 of the movable contact 34, so as to urge the latter axially towards its advanced rest position, advanced by relative to the rod 38, in which it is in support against the thrust washer 52.
  • the movable core 18 When the movable core 18 is commanded towards its forward position, it drives with it the control rod 38 against a return spring 55 which is arranged axially at the front of the rod 38, bearing on the one hand against the claw washer 53 and on the other hand against the transverse wall 24 of the cover 22.
  • the return spring 54 of the contact 34 causes the axial displacement of the movable contact 34 relative to the contactor 10 towards its position of closed circuit in which the movable contact 34 is in support against the two terminal heads 30, 32.
  • control rod 38 then continues its movement axial towards the front, under the action of the movable core 18, this which causes compression of the return spring 54 of the movable contact 34, because the movable contact 34 is immobilized in axial support against the terminals 26, 28.
  • the movable contact 34 then moves relative to the control rod 38 from its advanced rest position towards an active backward position, against its spring reminder 54.
  • Figures 2 to 6 show the assembly in accordance with the teachings of the invention, of a movable contact on a control rod.
  • the central section 44 of the control rod 38 consistent with the teachings of the invention is cylindrical, with a diameter greater than the diameter of the section rear guide 40, and has two lateral flats parallels 60 which extend over a rear portion 62 of the central section 44.
  • the transverse spacing of the two flats 60 is greater than the diameter of the rear guide section 40 of the control rod 38, and the flats 60 extend over an axial length less than the axial length of the central section 44 so that the front end 64 of the central section 44 delimits the flats 60 at the front and forms front axial abutment surfaces 66 for the movable contact 34 in the rest position.
  • the central opening 50 of the movable contact has at cross section the same shape as the rear portion 62 of the central section 44.
  • the movable contact 34 is likely to be engaged around the rear section of guide 40 of rod 38 then, orienting it so around the axis X-X of the rod 38, so that make the profiles of the contact opening 50 coincide mobile 34 and rear portion 62 of the central section 44, the movable contact 34 is engaged on the section central 44 on which it is capable of sliding, forward, until it comes to a stop on the surfaces of front axial stop 66.
  • the central section 44 includes a housing 56 which cross transversely from side to side, perpendicular to the plane of the flats 60 and which is intended to receive the return spring 54 of the contact mobile 34 to its rest position.
  • the housing 56 has in cross section a substantially rectangular shape, as can be seen at Figure 2, and it is axially delimited in the central section 44 by a rear face 68 and a face before 70.
  • the front face 70 of the housing 56 is carried out as an extension of the front stop surfaces 66 which delimit the flats 60, and the rear face 68 of the housing 56 is arranged in front of the end rear 72 of the central section 44 of the rod 38.
  • the housing 56 also has two walls longitudinal 74 upper and lower 76 which are substantially flat and with a spacing greater than the spacing of the two flats 60.
  • the return spring 54 is a helical spring of compression whose diameter is substantially equal to the spacing of the upper 74 and lower 76 walls of the housing 56.
  • the diameter of the return spring 54 of the movable contact 34 is therefore greater than the spacing of the two flats 60 so that when the spring 54 is engaged axially in the housing 56, it extends transversely from the housing 56 at the level of each of the flats 60.
  • the mounting of the movable contact 34 on the rod 38 is carried out as follows.
  • the movable contact 34 is brought to its position of rest on the rod 38 so that a front face 78 of the movable contact either in contact with the abutment surfaces axial 66 of the central section 44.
  • the return spring 54 is then compressed and engaged transversely according to arrow F in FIG. 2 in its housing so that it has one end rear 80 resting against the rear face 68 of the housing 56 and a front end 82 which is in abutment against a rear face 84 of the movable contact 34, which is possible because its diameter is greater than the spacing of two flats 60, and that it projects beyond the housing 56 because that the central opening 50 of the movable contact 34 is not circular but with a transverse profile identical to that of the rear portion 62 of the central section 44.
  • the spring 54 urges the movable contact 34 towards its rest position, in abutment against the axial abutment surfaces 66 of the central section 44.
  • the surface rear 68 of housing 56 is curved so as to help maintain the spring 54 inside the housing 56.
  • the central section 44 of the rod 38 is extended axially forward by a free end section 48 of reduced diameter which thus delimits a surface axial support ring 86 for the return spring 55 from rod 38 to its rear position.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Lock And Its Accessories (AREA)
  • Push-Button Switches (AREA)

Description

L'invention concerne un contacteur de démarreur pour un moteur à combustion interne de véhicule automobile selon le préambule de la revendication 1, comme il est connu par example du document EP-A- 595 698.The invention relates to a starter contactor for an internal combustion engine of a motor vehicle according to the preamble of claim 1, as is known for example from document EP-A-595 698.

L'invention concerne plus particulièrement un contacteur de démarreur pour véhicule automobile, du type dans lequel un contact mobile est monté coulissant axialement sur un tronçon central d'une tige de commande cylindrique entre une position avancée de repos et une position reculée active, du type dans lequel le contact mobile est sollicité axialement vers sa position de repos par des moyens de rappel élastique, et du type dans lequel une surface d'appui du contact mobile coopère avec une surface de butée de la tige pour déterminer la position de repos du contacteur par rapport à la tige.The invention relates more particularly to a starter switch for a motor vehicle, of the type in which a sliding contact is mounted slidingly axially on a central section of a control rod cylindrical between an advanced rest position and a active back position, of the type in which the contact mobile is axially biased towards its rest position by elastic return means, and of the type in which a bearing surface of the movable contact cooperates with a rod abutment surface to determine the rest position of the contactor relative to the rod.

Selon une conception connue, la surface de butée de la tige est constituée d'une rondelle de butée en acier qui est rendue solidaire axialement de la tige de commande par des moyens de fixation complémentaires.According to a known design, the abutment surface of the rod consists of a steel thrust washer which is made axially integral with the control rod by additional fixing means.

Ces moyens de fixation complémentaires sont constitués par une rondelle de fixation à griffes qui est emmanchée à force sur une extrémité libre de la tige de commande et qui immobilise la rondelle de butée contre un épaulement radial de la tige de commande. Ce mode de réalisation de la surface de butée de la tige présente donc l'inconvénient de nécessiter deux pièces spécifiques qui ne remplissent pas d'autres fonctions.These additional fixing means are constituted by a claw fixing washer which is fitted by force on a free end of the control rod and which immobilizes the thrust washer against a shoulder radial of the control rod. This embodiment of the stop surface of the rod therefore has the disadvantage of requiring two specific parts which do not perform other functions.

De plus, lors de l'emmanchement à force de la rondelle à griffe sur le tronçon d'extrémité de la tige, il peut se former des copeaux qui risquent ensuite de se détacher et de venir perturber le fonctionnement du contacteur.In addition, during the press fit of the washer claw on the end section of the rod, it can form chips which may then come off and disturb the operation of the contactor.

L'invention a pour but de proposer une nouvelle conception d'un contacteur qui permet de réaliser un montage fiable et économique du contact mobile sur la tige de commande. The object of the invention is to propose a new design of a contactor which allows reliable and economical mounting of the mobile contact on the control rod.

Dans ce but, l'invention propose un contacteur du type décrit précédemment, caractérisé en ce que la tige de commande comporte un logement central, qui la traverse transversalement de part en part, et dont une face transversale arrière forme une surface d'appui pour les moyens de rappel élastique du contact mobile qui s'appuient par ailleurs contre une face arrière du contact mobile, et en ce que le contact mobile, en position avancée de repos sur la tige, est en appui par une face avant contre une face de butée agencée à l'avant du tronçon central de la tige.To this end, the invention proposes a contactor of the type described above, characterized in that the rod control has a central housing, which passes through it transversely right through, and one side of which transverse rear forms a bearing surface for elastic return means of the mobile contact which are also supported against a rear face of the mobile contact, and in that the mobile contact, in advanced position of rest on the rod, is supported by a front face against a stop face arranged at the front of the central section of the rod.

Selon d'autres caractéristiques de l'invention :

  • la tige de commande comporte deux méplats latéraux parallèles opposés qui s'étendent axialement sur au moins toute la longueur axiale du logement central, laquelle est supérieure à la course du contact mobile, et les moyens de rappel élastique comportent un ressort hélicoïdal de compression dont le diamètre est inférieur ou égal à la hauteur transversale du logement de manière à être reçu axialement à l'intérieur du logement, en ce que le diamètre du ressort est supérieur à l'écartement des deux méplats latéraux de la tige de manière à dépasser transversalement du logement afin de prendre appui, par une extrémité axiale avant, contre la face arrière du contact mobile tandis que son extrémité axiale arrière est en appui contre la face transversale arrière du logement ;
  • la face transversale arrière du logement comporte un bombage convexe destiné à maintenir l'extrémité arrière du ressort de rappel du contact mobile centrée à l'intérieur du logement ;
  • les méplats s'étendent sur une portion arrière du tronçon central de manière à former, à l'extrémité avant du tronçon central, des surfaces de butée axiale pour le contact mobile en position de repos, et le contact mobile est en forme de plaque sensiblement rectangulaire comportant un orifice central dont la forme en section transversale est sensiblement similaire à celle de la portion arrière (du tronçon central) ;
  • la tige de commande est susceptible de se déplacer axialement dans le contacteur entre une position arrière et une position avant, et elle comporte une extrémité arrière de guidage de diamètre inférieur à l'écartement des deux méplats de manière à permettre le montage du contact mobile sur le tronçon central ;
  • la tige de commande comporte une extrémité avant de diamètre inférieur à celui du tronçon central de manière à former une surface d'appui axial pour un ressort hélicoïdal de rappel de la tige vers sa position arrière ;
  • la tige de commande est réalisée par moulage ;
  • l'invention concerne également un démarreur de véhicule automobile muni d'un contacteur selon les caractéristiques précédentes.
According to other characteristics of the invention:
  • the control rod comprises two opposite parallel lateral flats which extend axially over at least the entire axial length of the central housing, which is greater than the stroke of the movable contact, and the elastic return means comprise a helical compression spring whose diameter is less than or equal to the transverse height of the housing so as to be received axially inside the housing, in that the diameter of the spring is greater than the spacing of the two lateral flats of the rod so as to protrude transversely from the housing in order to bear, by a front axial end, against the rear face of the movable contact while its rear axial end bears against the rear transverse face of the housing;
  • the rear transverse face of the housing comprises a convex bending intended to maintain the rear end of the return spring of the movable contact centered inside the housing;
  • the flats extend over a rear portion of the central section so as to form, at the front end of the central section, axial abutment surfaces for the movable contact in the rest position, and the movable contact is in the form of a plate substantially rectangular with a central opening whose cross-sectional shape is substantially similar to that of the rear portion (of the central section);
  • the control rod is capable of moving axially in the contactor between a rear position and a front position, and it has a rear guide end with a diameter less than the spacing of the two flats so as to allow the movable contact to be mounted on the central section;
  • the control rod has a front end with a diameter less than that of the central section so as to form an axial bearing surface for a helical spring for returning the rod to its rear position;
  • the control rod is produced by molding;
  • the invention also relates to a motor vehicle starter provided with a contactor according to the preceding characteristics.

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 en coupe axiale d'un contacteur de démarreur réalisé selon l'état de la technique ;
  • la figure 2 est une vue en perspective éclatée d'un contact mobile et d'une tige de commande selon l'invention ;
  • la figure 3 est une vue en coupe axiale selon la ligne 3-3 de la figure 5 d'une tige de commande et d'un contact assemblés conformément aux enseignements de l'invention ;
  • la figure 4 est une vue en coupe axiale selon la ligne 4-4 de la figure 3 de la tige de commande et du contact mobile selon l'invention ;
  • la figure 5 est une vue en coupe transversale selon la ligne 5-5 de la figure 3.
  • la figure 6 est une vue en perspective d'une tige de commande et d'un contact mobile assemblés 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 an axial sectional view of a starter switch made according to the prior art;
  • Figure 2 is an exploded perspective view of a movable contact and a control rod according to the invention;
  • Figure 3 is an axial sectional view along line 3-3 of Figure 5 of a control rod and a contact assembled in accordance with the teachings of the invention;
  • Figure 4 is an axial sectional view along line 4-4 of Figure 3 of the control rod and the movable contact according to the invention;
  • FIG. 5 is a cross-sectional view along line 5-5 of FIG. 3.
  • Figure 6 is a perspective view of a control rod and a movable contact assembled according to the invention;

On a représenté sur la figure 1 un contacteur 10 qui comporte un boítier 12 d'axe X-X à l'intérieur duquel un bobinage inducteur 14 est destiné à provoquer, à l'aide d'une masse polaire 16, un champ magnétique axial susceptible de déplacer axialement un noyau mobile 18 entre une position arrière de repos représentée sur la figure 1 et une position avant, décalée axialement vers la droite en considérant la figure 1.FIG. 1 shows a contactor 10 which comprises a housing 12 of axis X-X inside which a inductor winding 14 is intended to cause, using of a polar mass 16, an axial magnetic field capable of moving a movable core 18 axially between a rear rest position shown on the Figure 1 and a front position, axially offset towards the right considering figure 1.

L'extrémité axiale avant 20 du boítier 12 est fermée par un capot 22 dont une paroi transversale 24 porte une borne d'entrée 26 reliée à une batterie (non représentée) du véhicule automobile et une borne d'alimentation 28 reliée au moteur électrique (non représenté) du démarreur.The front axial end 20 of the housing 12 is closed by a cover 22, a transverse wall 24 of which carries a input terminal 26 connected to a battery (not shown) of the motor vehicle and a power supply terminal 28 connected to the electric motor (not shown) of the starter.

Les bornes 26, 28 comportent chacune une tête de borne 30, 32 agencée à l'intérieur du contacteur et les têtes 30, 32 sont destinées à être reliées électriquement par un contact mobile 34 en forme de plaque rectangulaire réalisée en matériau conducteur de l'électricité.The terminals 26, 28 each have a terminal head 30, 32 arranged inside the contactor and the heads 30, 32 are intended to be electrically connected by a movable contact 34 in the form of a rectangular plate made of electrically conductive material.

Le contact mobile 34 est agencé transversalement dans le contacteur 10, entre la masse polaire 16 et les têtes de borne 30, 32.The movable contact 34 is arranged transversely in the contactor 10, between the pole ground 16 and the heads terminal 30, 32.

Il est susceptible d'être déplacé dans le contacteur 10 axialement entre une première position de circuit ouvert représentée sur la figure 1 et dans laquelle il est en appui contre une face axiale avant 36 de la masse polaire 16 et une position de circuit fermé, décalée vers la droite en considérant la figure 1, et dans laquelle il est en appui contre les têtes de borne 30, 32 de manière à les raccorder électriquement.It may be moved in the contactor 10 axially between a first circuit position open shown in Figure 1 and in which it is in abutment against a front axial face 36 of the mass pole 16 and a closed circuit position, shifted towards the right considering figure 1, and in which it is pressed against the terminal heads 30, 32 so to connect them electrically.

Ainsi, le contacteur 10 commande l'alimentation du moteur du démarreur en courant électrique fourni par la batterie du véhicule.Thus, the contactor 10 controls the supply of the electric starter motor supplied by the vehicle battery.

Les déplacements du contact mobile 34 dans le contacteur 10 sont commandées par l'intermédiaire d'une tige de commande 38 qui est susceptible d'être déplacée axialement d'arrière en avant dans le contacteur 10 par le noyau 18.Movements of the mobile contact 34 in the contactor 10 are controlled via a control rod 38 which can be moved axially from back to front in contactor 10 by the core 18.

La tige 38 comporte un tronçon arrière de guidage 40 qui traverse axialement la masse polaire 16 et dont l'extrémité axiale arrière 42 est commandée par le noyau mobile 18.The rod 38 has a rear guide section 40 which crosses axially the polar mass 16 and of which the rear axial end 42 is controlled by the core mobile 18.

Le tronçon arrière de guidage 40 est prolongé par un tronçon central 44, sur lequel coulisse le contact mobile et qui est délimité, à l'arrière, par un collet radial externe 46 de diamètre supérieur, et, à l'avant, par une extrémité libre 48 de diamètre inférieur.The rear guide section 40 is extended by a central section 44, on which the movable contact slides and which is delimited at the rear by a radial collar outer 46 of larger diameter, and, at the front, by a free end 48 of smaller diameter.

Le tronçon central 44 est donc délimité axialement par deux surfaces d'épaulement radial arrière 49 et avant 51.The central section 44 is therefore delimited axially by two rear radial 49 and front shoulder 51 surfaces.

Le contact mobile 34 comporte un trou ou orifice central circulaire 50 pour permettre son montage coulissant, entre une position avancée de repos et une position reculée active, sur le tronçon central cylindrique 44 de la tige 38.The movable contact 34 has a hole or orifice circular central 50 to allow its mounting sliding, between an advanced rest position and a backward position active, on the central section cylindrical 44 of the rod 38.

Une rondelle de butée 52 est engagée sur l'extrémité axiale libre 48 de la tige 38 et elle est maintenue en appui contre la surface d'épaulement radial avant 51 par une rondelle à griffes 53 qui est emmanchée à force sur l'extrémité libre 48. A thrust washer 52 is engaged on the end free axial 48 of the rod 38 and it is held in bearing against the front radial shoulder surface 51 by a claw washer 53 which is force fitted on the free end 48.

Un ressort hélicoïdal de compression 54 est agencé autour du tronçon central 44 de la tige 38, entre le collet radial externe 46 et une face arrière 35 du contact mobile 34, de manière à solliciter ce dernier axialement vers sa position avancée de repos, avancée par rapport à la tige 38, dans laquelle il est en appui contre la rondelle de butée 52.A helical compression spring 54 is arranged around the central section 44 of the rod 38, between the external radial collar 46 and a rear face 35 of the movable contact 34, so as to urge the latter axially towards its advanced rest position, advanced by relative to the rod 38, in which it is in support against the thrust washer 52.

Lorsque le noyau mobile 18 est commandé vers sa position avant, il entraíne avec lui la tige de commande 38 à l'encontre d'un ressort de rappel 55 qui est agencé axialement à l'avant de la tige 38, en appui d'une part contre la rondelle à griffes 53 et d'autre part contre la paroi transversale 24 du capot 22.When the movable core 18 is commanded towards its forward position, it drives with it the control rod 38 against a return spring 55 which is arranged axially at the front of the rod 38, bearing on the one hand against the claw washer 53 and on the other hand against the transverse wall 24 of the cover 22.

Le ressort de rappel 54 du contact 34, dont une extrémité est en appui contre le collet radial 46 de la tige 38, provoque le déplacement axial du contact mobile 34 par rapport au contacteur 10 vers sa position de circuit fermé dans laquelle le contact mobile 34 est en appui contre les deux têtes de bornes 30, 32.The return spring 54 of the contact 34, one of which end is in abutment against the radial collar 46 of the rod 38, causes the axial displacement of the movable contact 34 relative to the contactor 10 towards its position of closed circuit in which the movable contact 34 is in support against the two terminal heads 30, 32.

La tige de commande 38 poursuit alors son déplacement axial vers l'avant, sous l'action du noyau mobile 18, ce qui provoque la compression du ressort de rappel 54 du contact mobile 34, du fait que le contact mobile 34 est immobilisé en appui axialement contre les bornes 26, 28.The control rod 38 then continues its movement axial towards the front, under the action of the movable core 18, this which causes compression of the return spring 54 of the movable contact 34, because the movable contact 34 is immobilized in axial support against the terminals 26, 28.

Le contact mobile 34 se déplace alors par rapport à la tige de commande 38 de sa position avancée de repos vers une position reculée active, à l'encontre de son ressort de rappel 54.The movable contact 34 then moves relative to the control rod 38 from its advanced rest position towards an active backward position, against its spring reminder 54.

On a représenté sur les figures 2 à 6 l'assemblage conformément aux enseignements de l'invention, d'un contact mobile sur une tige de commande.Figures 2 to 6 show the assembly in accordance with the teachings of the invention, of a movable contact on a control rod.

Le tronçon central 44 de la tige de commande 38 conforme aux enseignements de l'invention est cylindrique, de diamètre supérieur au diamètre du tronçon arrière de guidage 40, et comporte deux méplats latéraux parallèles 60 qui s'étendent sur une portion arrière 62 du tronçon central 44.The central section 44 of the control rod 38 consistent with the teachings of the invention is cylindrical, with a diameter greater than the diameter of the section rear guide 40, and has two lateral flats parallels 60 which extend over a rear portion 62 of the central section 44.

L'écartement transversal des deux méplats 60 est supérieur au diamètre du tronçon arrière de guidage 40 de la tige de commande 38, et les méplats 60 s'étendent sur une longueur axiale inférieure à la longueur axiale du tronçon central 44 de manière que l'extrémité avant 64 du tronçon central 44 délimite les méplats 60 à l'avant et forme des surfaces de butée axiale avant 66 pour le contact mobile 34 en position de repos.The transverse spacing of the two flats 60 is greater than the diameter of the rear guide section 40 of the control rod 38, and the flats 60 extend over an axial length less than the axial length of the central section 44 so that the front end 64 of the central section 44 delimits the flats 60 at the front and forms front axial abutment surfaces 66 for the movable contact 34 in the rest position.

L'orifice central 50 du contact mobile possède en section transversale la même forme que la portion arrière 62 du tronçon central 44. Ainsi, le contact mobile 34 est susceptible d'être engagé autour du tronçon arrière de guidage 40 de la tige 38 puis, en l'orientant de manière adéquate autour de l'axe X-X de la tige 38, de manière à faire coïncider les profils de l'orifice 50 du contact mobile 34 et de la portion arrière 62 du tronçon central 44, le contact mobile 34 est engagé sur le tronçon central 44 sur lequel il est susceptible de coulisser, vers l'avant, jusqu'à venir en butée sur les surfaces de butée axiale avant 66.The central opening 50 of the movable contact has at cross section the same shape as the rear portion 62 of the central section 44. Thus, the movable contact 34 is likely to be engaged around the rear section of guide 40 of rod 38 then, orienting it so around the axis X-X of the rod 38, so that make the profiles of the contact opening 50 coincide mobile 34 and rear portion 62 of the central section 44, the movable contact 34 is engaged on the section central 44 on which it is capable of sliding, forward, until it comes to a stop on the surfaces of front axial stop 66.

Le tronçon central 44 comporte un logement 56 qui le traverse transversalement de part en part, perpendiculairement au plan des méplats 60 et qui est destiné à recevoir le ressort de rappel 54 du contact mobile 34 vers sa position de repos.The central section 44 includes a housing 56 which cross transversely from side to side, perpendicular to the plane of the flats 60 and which is intended to receive the return spring 54 of the contact mobile 34 to its rest position.

Le logement 56 possède en section transversale une forme sensiblement rectangulaire, comme on peut le voir à la figure 2, et il est délimité axialement dans le tronçon central 44 par une face arrière 68 et une face avant 70. The housing 56 has in cross section a substantially rectangular shape, as can be seen at Figure 2, and it is axially delimited in the central section 44 by a rear face 68 and a face before 70.

Selon le mode de réalisation de l'invention représenté sur les figures, la face avant 70 du logement 56 est réalisée dans le prolongement des surfaces de butée avant 66 qui délimitent les méplats 60, et la face arrière 68 du logement 56 est agencée en avant de l'extrémité arrière 72 du tronçon central 44 de la tige 38.According to the embodiment of the invention shown in the figures, the front face 70 of the housing 56 is carried out as an extension of the front stop surfaces 66 which delimit the flats 60, and the rear face 68 of the housing 56 is arranged in front of the end rear 72 of the central section 44 of the rod 38.

Le logement 56 comporte également deux parois longitudinales supérieure 74 et inférieure 76 qui sont sensiblement planes et dont l'écartement est supérieur à l'écartement des deux méplats 60.The housing 56 also has two walls longitudinal 74 upper and lower 76 which are substantially flat and with a spacing greater than the spacing of the two flats 60.

Le ressort de rappel 54 est un ressort hélicoïdal de compression dont le diamètre est sensiblement égal à l'écartement des parois supérieure 74 et inférieure 76 du logement 56.The return spring 54 is a helical spring of compression whose diameter is substantially equal to the spacing of the upper 74 and lower 76 walls of the housing 56.

Le diamètre du ressort de rappel 54 du contact mobile 34 est donc supérieur à l'écartement des deux méplats 60 de sorte que lorsque le ressort 54 est engagé axialement dans le logement 56, il dépasse transversalement du logement 56 au niveau de chacun des méplats 60.The diameter of the return spring 54 of the movable contact 34 is therefore greater than the spacing of the two flats 60 so that when the spring 54 is engaged axially in the housing 56, it extends transversely from the housing 56 at the level of each of the flats 60.

Le montage du contact mobile 34 sur la tige 38 s'effectue de la manière suivante.The mounting of the movable contact 34 on the rod 38 is carried out as follows.

Le contact mobile 34 est amené vers sa position de repos sur la tige 38 de manière qu'une face avant 78 du contact mobile soit au contact des surfaces de butée axiale 66 du tronçon central 44.The movable contact 34 is brought to its position of rest on the rod 38 so that a front face 78 of the movable contact either in contact with the abutment surfaces axial 66 of the central section 44.

Le ressort de rappel 54 est alors comprimé et engagé transversalement selon la flèche F de la figure 2 dans son logement de manière qu'il comporte une extrémité arrière 80 en appui contre la face arrière 68 du logement 56 et une extrémité avant 82 qui soit en appui contre une face arrière 84 du contact mobile 34, ce qui est possible du fait que son diamètre est supérieur à l'écartement des deux méplats 60, et qu'il déborde du logement 56 du fait que l'orifice central 50 du contact mobile 34 n'est pas circulaire mais est de profil transversal identique à celui de la portion arrière 62 du tronçon central 44.The return spring 54 is then compressed and engaged transversely according to arrow F in FIG. 2 in its housing so that it has one end rear 80 resting against the rear face 68 of the housing 56 and a front end 82 which is in abutment against a rear face 84 of the movable contact 34, which is possible because its diameter is greater than the spacing of two flats 60, and that it projects beyond the housing 56 because that the central opening 50 of the movable contact 34 is not circular but with a transverse profile identical to that of the rear portion 62 of the central section 44.

De la sorte, le ressort 54 sollicite le contact mobile 34 vers sa position de repos, en butée contre les surfaces de butée axiale 66 du tronçon central 44.In this way, the spring 54 urges the movable contact 34 towards its rest position, in abutment against the axial abutment surfaces 66 of the central section 44.

Comme on peut le voir sur la figure 3, la surface arrière 68 du logement 56 est bombée de manière à favoriser le maintien du ressort 54 à l'intérieur du logement 56.As can be seen in Figure 3, the surface rear 68 of housing 56 is curved so as to help maintain the spring 54 inside the housing 56.

Le tronçon central 44 de la tige 38 est prolongé axialement vers l'avant par un tronçon d'extrémité libre 48 de diamètre réduit qui délimite ainsi une surface annulaire axiale d'appui 86 pour le ressort de rappel 55 de la tige 38 vers sa position arrière.The central section 44 of the rod 38 is extended axially forward by a free end section 48 of reduced diameter which thus delimits a surface axial support ring 86 for the return spring 55 from rod 38 to its rear position.

Claims (8)

  1. A starter contactor for a motor vehicle, of the type in which a moving contact (34) is mounted for axial sliding movement on a central portion (44) of a cylindrical control rod (38), between an advanced rest position and a retracted working position, of the type in which the moving contact (34) is biased axially towards its rest position by resilient return means, and of the type in which an engagement surface (78) of the moving contact (34) is in cooperation with an abutment surface (66) of the rod so as to determine the rest position of the moving contact (34) with respect to the rod, characterised in that the control rod (38) includes a central housing (56) which extends transversely through it from side to side, and which has a rear transverse face (68) that constitutes an engagement surface for the resilient return means (54) of the moving contact (34), which also bear against a rear face (84) of the moving contact (34), and in that the moving contact (34), in its advanced rest position on the rod (38), is in engagement through a front face (78) against an axial abutment face (66) disposed in front of the central portion (44) of the rod (38).
  2. A contactor according to Claim 1, characterised in that the control rod (38) has two parallel, opposed lateral flats (60) which extend axially over at least the whole axial length of the central housing (56), which is greater than the course of travel of the moving contact (34), and in that the resilient return means consist of a helical compression spring (54) the diameter of which is smaller than or equal to the transverse height of the housing (56), so as to be received axially within the housing (56), and in that the diameter of the spring (54) is greater than the spacing between the two lateral flats (60) of the rod, whereby to extend transversely out of the housing (56) so as to come into engagement, through a front axial end, against the rear face (84) of the moving contact (34), while its rear axial end is in engagement against the rear transverse end (68) of the housing (56).
  3. A contactor according to Claim 2, characterised in that the rear transverse face (68) of the housing (56) includes a convex bulge adapted to keep the rear end of the return spring (54) for the moving contact (34) centred in the housing (56).
  4. A contactor according to Claim 3, characterised in that the flats (60) extend over a rear portion (62) of the central portion (44), so as to define, at the front end (64) of the central portion (44), axial abutment surfaces (66) for the moving contact (34) in the rest position, and in that the moving contact (34) is in the form of a substantially rectangular plate having a central aperture (50), the form of which, in transverse cross section, is substantially similar to that of the rear portion (62) of the central portion (44).
  5. A contactor according to Claim 4, characterised in that the control rod (34) is arranged to be displaceable axially in the contactor (34) between a rear position and a front position, and in that it has a rear guiding end portion (44), the diameter of which is smaller than the distance between the two flats (60), whereby to enable the moving contact (34) to be mounted on the central portion (44).
  6. A contactor according to Claim 5, characterised in that the control rod (38) has a front end portion (48), the diameter of which is smaller than that of the central portion (44), whereby to define an axial engagement surface (86) for a helical return spring (55) for returning the rod (38) to its rear position.
  7. A contactor according to any one of the preceding Claims, characterised in that the control rod (38) is made by moulding.
  8. A motor vehicle starter, characterised in that it has a contactor according to any one of the preceding Claims.
EP19960118027 1995-12-05 1996-11-11 Starter contact with integrated return spring and vehicle starter equipped with such a contactor Expired - Lifetime EP0778600B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9514365 1995-12-05
FR9514365A FR2741995B1 (en) 1995-12-05 1995-12-05 STARTER CONTACTOR WITH INTEGRATED RETURN SPRING AND MOTOR VEHICLE STARTER PROVIDED WITH SUCH A CONTACTOR

Publications (2)

Publication Number Publication Date
EP0778600A1 EP0778600A1 (en) 1997-06-11
EP0778600B1 true EP0778600B1 (en) 2001-05-30

Family

ID=9485156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960118027 Expired - Lifetime EP0778600B1 (en) 1995-12-05 1996-11-11 Starter contact with integrated return spring and vehicle starter equipped with such a contactor

Country Status (3)

Country Link
EP (1) EP0778600B1 (en)
DE (1) DE69613085T2 (en)
FR (1) FR2741995B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2770334B1 (en) * 1997-10-28 2000-03-10 Valeo Equip Electr Moteur STARTER CONTACTOR COMPRISING AN IMPROVED MOBILE CONTACT AND MOTOR VEHICLE STARTER PROVIDED WITH SUCH A CONTACTOR
DE102011080477B4 (en) 2011-08-05 2021-09-02 Seg Automotive Germany Gmbh Starter and starter relay with anti-twist protection

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3609634A1 (en) * 1986-03-21 1987-09-24 Kloeckner Moeller Elektrizit Contact arrangement for electrical switching apparatuses
FR2697370B1 (en) * 1992-10-26 1994-12-02 Valeo Equip Electr Moteur Contactor for motor vehicle internal combustion engine starter.
FR2710451B1 (en) * 1993-09-24 1995-12-01 Claude Bonnet Circuit breaker comprising a movable spring cage and a removable operating handle.

Also Published As

Publication number Publication date
FR2741995B1 (en) 1997-12-26
EP0778600A1 (en) 1997-06-11
FR2741995A1 (en) 1997-06-06
DE69613085T2 (en) 2001-10-18
DE69613085D1 (en) 2001-07-05

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