EP0778601A1 - Starter contactor provided with a stop for movable contact made by deformation and the vehicle starter equipped with such a contactor - Google Patents

Starter contactor provided with a stop for movable contact made by deformation and the vehicle starter equipped with such a contactor Download PDF

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Publication number
EP0778601A1
EP0778601A1 EP96118028A EP96118028A EP0778601A1 EP 0778601 A1 EP0778601 A1 EP 0778601A1 EP 96118028 A EP96118028 A EP 96118028A EP 96118028 A EP96118028 A EP 96118028A EP 0778601 A1 EP0778601 A1 EP 0778601A1
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EP
European Patent Office
Prior art keywords
movable contact
rod
control rod
contactor
contactor according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96118028A
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German (de)
French (fr)
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EP0778601B1 (en
Inventor
Jean-François Quentric
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Equipements Electriques Moteur SAS
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Valeo Equipements Electriques Moteur SAS
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Application filed by Valeo Equipements Electriques Moteur SAS filed Critical Valeo Equipements Electriques Moteur SAS
Publication of EP0778601A1 publication Critical patent/EP0778601A1/en
Application granted granted Critical
Publication of EP0778601B1 publication Critical patent/EP0778601B1/en
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Expired - Lifetime 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts

Definitions

  • the invention relates to a starter switch for an internal combustion engine of a motor vehicle.
  • the invention relates more particularly to a starter switch for a motor vehicle, of the type in which a movable contact is mounted to slide axially on a control rod between a rest position and an active position, of the type in which the movable contact is axially stressed towards its rest position by elastic return means, and of the type in which a bearing surface of the movable contact cooperates with an abutment surface of the rod to determine the rest position of the contactor relative to the rod.
  • the abutment surface of the rod consists of a steel abutment washer which is made axially integral with the control rod by complementary fixing means.
  • These complementary fixing means consist of a claw fixing washer which is force fitted on a free end of the control rod and which immobilizes the thrust washer against a radial shoulder of the control rod.
  • This embodiment of the abutment surface of the rod therefore has the drawback of requiring two specific parts which do not fulfill other functions.
  • chips may form which may then come off and disturb the operation of the contactor.
  • the object of the invention is to propose a new design of a contactor which enables reliable and economical mounting of the movable contact on the control rod.
  • the invention provides a contactor of the type described above, characterized in that the surface support, or the abutment surface, is produced by deformation of the movable contact, respectively of the rod, during assembly of the movable contact on the rod.
  • a contactor 10 which comprises a housing 12 inside which an inductor winding 14 is intended to cause, using a polar mass 16, an axial magnetic field capable of axially displacing a core mobile 18 between a rear rest position shown in FIG. 1 and a front position, axially offset to the right when 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 an 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 conductive material of the electricity.
  • the movable contact 34 is arranged transversely in the contactor 10, between the pole ground 16 and the terminal heads 30, 32.
  • the contactor 10 controls the supply of the starter motor with electric current supplied by the vehicle battery.
  • the movements of the movable contact 34 in the contactor 10 are controlled by means of a control rod 38 which is capable of being moved axially from back to front in the contactor 10 by the core 18.
  • the rod 38 has a rear guide section 40 which passes axially through the pole mass 16 and of which the rear axial end 42 is controlled by the movable core 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 an external radial collar 46 of greater diameter, and, at the front, by one end free 48 of smaller diameter.
  • the central section 44 is therefore axially delimited by two rear radial 49 and front 51 shoulder surfaces.
  • the movable contact 34 has a circular central hole or orifice 50 to allow its sliding mounting, between an advanced rest position and an active retracted position, on the cylindrical central section 44 of the rod 38.
  • a thrust washer 52 is engaged on the free axial end 48 of the rod 38 and it is held in abutment 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 bias the latter axially towards its advanced position of rest, advanced by relative to the rod 38, in which it bears against the thrust washer 52.
  • the movable core 18 When the movable core 18 is controlled towards its front position, it drives with it the control rod 38 against a return spring 55 which is arranged axially in front of the rod 38, in support of a part against the claw washer 53 and secondly 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 closed circuit position in which the movable contact 34 is in abutment against the two terminal heads 30, 32.
  • control rod 38 then continues its axial movement forwards, under the action of the movable core 18, which causes the compression spring 54 of the movable contact 34 to be compressed, because the movable contact 34 is immobilized in abutment axially against terminals 26, 28.
  • the movable contact 34 then moves relative to the control rod 38 from its advanced rest position to an active retracted position, against its return spring 54.
  • the central section 44 of the rod 38 comprises two lateral grooves 56 which are arranged symmetrically with respect to the axis XX of the rod 38 and which are delimited axially, at the rear, by the radial collar external 46 and, at the front, by an axial end face 58.
  • the axial end face 58 of the grooves 56 is arranged axially behind the front radial shoulder 51 formed by the free end 48 of the rod 38.
  • the central section 44 it is necessary for the central section 44 to be of axial length slightly greater than that of the known embodiment of the technique so that the grooves 56 allow a similar stroke of the movable contact 34 relative to the rod 38.
  • the grooves 56 have a circular arc profile in cross section and the movable contact 34 is substantially rectangular so that the central orifice 50, the diameter of which is substantially equal to the diameter of the central section 44 of the rod 38, delimits, in the direction of the width of the movable contact 34, two portions of reduced transverse width 60.
  • the movable contact 34 and its return spring 54 are engaged on the rod 38 so that the reduced width portions 60 of the movable contact 34 are each arranged opposite one of the grooves 56 of the control rod 38.
  • the arrangement of the two recesses 56 facing each other makes it possible to deform the movable contact 34 by applying on its two opposite lateral edges forces of the same direction, of the same intensity but in the opposite direction, so that the result of their action is zero, which avoids significant clamping of the part during assembly.
  • the front radial shoulder surface 51 formed between the central section 44 and the free end 48 of the rod 38 forms a bearing surface for the return spring 55 of the rod 38.
  • the control rod 38 is preferably produced by molding and the grooves 56 are produced integrally.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Lock And Its Accessories (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The relay has a moving contact (34) sliding axially on a control rod (38) having an abutment surface which determines the rest position of the rear face (35) of the contact. This provides an abutment surface for a spring (54) coiled around the central section (44) of the rod. The portions (60) of the contact on either side of the central hole are deformable by pressure of pincers (64) applied simultaneously from opposite directions. Another coil spring (55) bears upon a radial shoulder between the central section of the rod and its free end (48).

Description

L'invention concerne un contacteur de démarreur pour un moteur à combustion interne de véhicule automobile.The invention relates to a starter switch for an internal combustion engine of a motor vehicle.

L'invention concerne plus particulièrement un contacteur de démarreur pour véhicule automobile, du type dans lequel un contact mobile est monté coulissant axialement sur une tige de commande entre une position de repos et une position 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 movable contact is mounted to slide axially on a control rod between a rest position and an active position, of the type in which the movable contact is axially stressed towards its rest position by elastic return means, and of the type in which a bearing surface of the movable contact cooperates with an abutment surface of the rod 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 abutment washer which is made axially integral with the control rod by complementary 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 complementary fixing means consist of a claw fixing washer which is force fitted on a free end of the control rod and which immobilizes the thrust washer against a radial shoulder of the control rod. This embodiment of the abutment surface of the rod therefore has the drawback of requiring two specific parts which do not fulfill 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 force fitting of the claw washer on the end section of the rod, chips may form 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 enables reliable and economical mounting of the movable contact on the control rod.

Dans ce but, l'invention propose un contacteur du type décrit précédemment, caractérisé en ce que la surface d'appui, ou la surface de butée, est réalisée par déformation du contact mobile, respectivement de la tige, lors du montage du contact mobile sur la tige.To this end, the invention provides a contactor of the type described above, characterized in that the surface support, or the abutment surface, is produced by deformation of the movable contact, respectively of the rod, during assembly of the movable contact on the rod.

Selon d'autres caractéristiques de l'invention :

  • la tige de commande comporte au moins une rainure radiale qui s'étend axialement sur une longueur au moins égale à la longueur de la course du contact mobile entre ses positions active et de repos, et le contact mobile est déformé radialement lors de son montage sur la tige de manière à former un ergot radial d'appui qui est reçu en coulissement dans la rainure de la tige et qui coopère avec une face d'extrémité axiale de butée de la rainure pour déterminer la position de repos du contact mobile ;
  • le contact mobile est une plaque sensiblement rectangulaire percée en son centre d'un orifice circulaire pour le passage de la tige de commande qui est cylindrique, le contact mobile comporte au moins une portion de largeur transversale réduite qui s'étend au voisinage de l'orifice central, l'évidement de la tige de commande est agencé en regard de la portion transversale réduite, et la portion transversale réduite est déformée radialement en agissant sur son bord extérieur de manière à former dans l'orifice un ergot radial qui est reçu dans l'évidement de la tige ;
  • la rainure présente en section transversale un profil en arc de cercle et l'ergot formé par déformation du contact mobile est de forme complémentaire ;
  • la tige de commande comporte deux rainures opposées réparties symétriquement de part et d'autre de l'axe de la tige de commande et le contact mobile comporte deux portions transversales réduites opposées, qui sont agencées de part et d'autre de l'orifice central dans le sens de la largeur du contact mobile rectangulaire, et qui sont destinées à être déformées transversalement pour former simultanément deux ergots d'appui ;
  • la tige de commande est réalisée par moulage et les rainures sont réalisées venues de matière avec la tige ;
  • 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 has at least one radial groove which extends axially over a length at least equal to the length of the stroke of the movable contact between its active and rest positions, and the movable contact is deformed radially when it is mounted on the rod so as to form a radial support lug which is received in sliding in the groove of the rod and which cooperates with an axial end face of abutment of the groove to determine the rest position of the movable contact;
  • the movable contact is a substantially rectangular plate pierced in its center with a circular orifice for the passage of the control rod which is cylindrical, the movable contact comprises at least a portion of reduced transverse width which extends in the vicinity of the central opening, the recess of the control rod is arranged opposite the reduced transverse portion, and the reduced transverse portion is deformed radially by acting on its outer edge so as to form in the opening a radial lug which is received in the recess of the rod;
  • the groove has a cross-sectional profile in a circular arc and the lug formed by deformation of the movable contact is of complementary shape;
  • the control rod comprises two opposite grooves distributed symmetrically on either side of the axis of the control rod and the movable contact comprises two opposite reduced transverse portions, which are arranged on either side of the central orifice across the width of the rectangular movable contact, and which are intended to be deformed transversely to simultaneously form two support pins;
  • the control rod is produced by molding and the grooves are produced integrally with the rod;
  • 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 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 de démarreur réalisé selon l'état de la technique ;
  • la figure 2 est une vue en perspective d'une tige de commande et d'un contact mobile assemblés conformément aux enseignements de l'invention ;
  • la figure 3 est une vue en coupe axiale selon la ligne 3-3 de la figure 4 d'une tige de commande et d'un contact mobile assemblés conformément aux enseignements de l'invention ;
  • la figure 4 est une vue en coupe transversale selon la ligne 4-4 de la figure 3 qui illustre le contact mobile après son montage sur la tige mais avant sa déformation ;
  • la figure 5 est une vue partielle en coupe transversale selon la ligne 4-4 de la figure 3 qui illustre le contact mobile après sa déformation.
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 starter switch made according to the prior art;
  • Figure 2 is a perspective view of a control rod and a movable contact assembled in accordance with the teachings of the invention;
  • Figure 3 is an axial sectional view along line 3-3 of Figure 4 of a control rod and a movable contact assembled in accordance with the teachings of the invention;
  • Figure 4 is a cross-sectional view along line 4-4 of Figure 3 which illustrates the movable contact after mounting on the rod but before its deformation;
  • Figure 5 is a partial cross-sectional view along line 4-4 of Figure 3 which illustrates the movable contact after its deformation.

On a représenté sur la figure 1 un contacteur 10 qui comporte un boîtier 12 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.There is shown in Figure 1 a contactor 10 which comprises a housing 12 inside which an inductor winding 14 is intended to cause, using a polar mass 16, an axial magnetic field capable of axially displacing a core mobile 18 between a rear rest position shown in FIG. 1 and a front position, axially offset to the right when considering Figure 1.

L'extrémité axiale avant 20 du boîtier 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 an 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 conductive material of the electricity.

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 terminal heads 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 is capable of being displaced in the contactor 10 axially between a first open circuit position shown in FIG. 1 and in which it is in abutment against a front axial face 36 of the polar mass 16 and a closed circuit position, offset to the right considering FIG. 1, and in which it bears against the terminal heads 30, 32 so as 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 starter motor with electric current 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.The movements of the movable contact 34 in the contactor 10 are controlled by means of a control rod 38 which is capable of being moved axially from back to front in the 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 passes axially through the pole mass 16 and of which the rear axial end 42 is controlled by the movable core 18.

Le tronçon arrière de guidage 40 est prolongé par un troncon 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 an external radial collar 46 of greater diameter, and, at the front, by one end free 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 axially delimited by two rear radial 49 and front 51 shoulder 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 circular central hole or orifice 50 to allow its sliding mounting, between an advanced rest position and an active retracted position, on the cylindrical central section 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 free axial end 48 of the rod 38 and it is held in abutment 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 bias the latter axially towards its advanced position of rest, advanced by relative to the rod 38, in which it bears against the thrust washer 52.

Lorsque le noyau mobile 18 est commandé vers sa position avant, il entraîne 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 controlled towards its front position, it drives with it the control rod 38 against a return spring 55 which is arranged axially in front of the rod 38, in support of a part against the claw washer 53 and secondly 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 end of which bears 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 closed circuit position in which the movable contact 34 is in abutment 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 axial movement forwards, under the action of the movable core 18, which causes the compression spring 54 of the movable contact 34 to be compressed, because the movable contact 34 is immobilized in abutment axially against 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 to an active retracted position, against its return spring 54.

On a représenté sur les figures 2 à 5 une tige de commande et un contact mobile conçus conformément aux enseignements de l'invention.There is shown in Figures 2 to 5 a control rod and a movable contact designed in accordance with the teachings of the invention.

Le tronçon central 44 de la tige 38 conforme aux enseignements de l'invention comporte deux rainures latérales 56 qui sont agencées symétriquement par rapport à l'axe X-X de la tige 38 et qui sont délimitées axialement, à l'arrière, par le collet radial externe 46 et, à l'avant, par une face d'extrémité axiale 58.The central section 44 of the rod 38 according to the teachings of the invention comprises two lateral grooves 56 which are arranged symmetrically with respect to the axis XX of the rod 38 and which are delimited axially, at the rear, by the radial collar external 46 and, at the front, by an axial end face 58.

La face d'extrémité axiale 58 des rainures 56 est agencée axialement en arrière de l'épaulement radial avant 51 formé par l'extrémité libre 48 de la tige 38.The axial end face 58 of the grooves 56 is arranged axially behind the front radial shoulder 51 formed by the free end 48 of the rod 38.

De la sorte, il est nécessaire que le tronçon central 44 soit de longueur axiale légèrement supérieure à celui du mode de réalisation connu de la technique afin que les rainures 56 autorisent une course similaire du contact mobile 34 par rapport à la tige 38.In this way, it is necessary for the central section 44 to be of axial length slightly greater than that of the known embodiment of the technique so that the grooves 56 allow a similar stroke of the movable contact 34 relative to the rod 38.

Comme on peut le voir plus particulièrement sur la figure 4, les rainures 56 ont un profil en arc-de-cercle en section transversale et le contact mobile 34 est sensiblement rectangulaire de sorte que l'orifice central 50, dont le diamètre est sensiblement égal au diamètre du tronçon central 44 de la tige 38, délimite, dans le sens de la largeur du contact mobile 34, deux portions de largeur transversale réduite 60.As can be seen more particularly in Figure 4, the grooves 56 have a circular arc profile in cross section and the movable contact 34 is substantially rectangular so that the central orifice 50, the diameter of which is substantially equal to the diameter of the central section 44 of the rod 38, delimits, in the direction of the width of the movable contact 34, two portions of reduced transverse width 60.

Le contact mobile 34 et son ressort de rappel 54 sont engagés sur la tige 38 de manière que les portions de largeur réduite 60 du contact mobile 34 sont agencées chacune en regard d'une des rainures 56 de la tige de commande 38.The movable contact 34 and its return spring 54 are engaged on the rod 38 so that the reduced width portions 60 of the movable contact 34 are each arranged opposite one of the grooves 56 of the control rod 38.

Il est alors possible de déformer transversalement les portions 60 du contact mobile 34 en appliquant sur chacune d'elles une force transversale dirigée en direction de l'axe X-X de la tige de commande 38 de manière qu'elles forment chacune, dans le trou central 50, un ergot radial d'appui 62 qui est reçu dans l'évidement 56 correspondant, ceci à l'aide de poinçons 64 qui agissent radialement de manière opposée et simultanée.It is then possible to deform transversely the portions 60 of the movable contact 34 by applying to each of them a transverse force directed towards the axis XX of the control rod 38 so that they each form, in the central hole 50, a radial lug 62 which is received in the corresponding recess 56, this using punches 64 which act radially in opposite and simultaneous manner.

Au repos, le ressort de rappel 54 du contact mobile 34 repousse alors ce dernier vers l'avant par rapport à la tige 38 jusqu'à ce que les ergots d'appui 62 arrivent au contact des extrémités axiales avant 58 des rainures 56.At rest, the return spring 54 of the movable contact 34 then pushes the latter forward towards the rod 38 until the support pins 62 come into contact with the front axial ends 58 of the grooves 56.

La disposition des deux évidements 56 en vis-à-vis permet de déformer le contact mobile 34 en appliquant sur ses deux bords latéraux opposés des forces de même direction, de même intensité mais de sens opposé, de sorte que la résultante de leur action est nulle, ce qui permet d'éviter un serrage important de la pièce au cours du montage.The arrangement of the two recesses 56 facing each other makes it possible to deform the movable contact 34 by applying on its two opposite lateral edges forces of the same direction, of the same intensity but in the opposite direction, so that the result of their action is zero, which avoids significant clamping of the part during assembly.

La surface d'épaulement radial avant 51 formée entre le tronçon central 44 et l'extrémité libre 48 de la tige 38 forme une surface d'appui pour le ressort de rappel 55 de la tige 38.The front radial shoulder surface 51 formed between the central section 44 and the free end 48 of the rod 38 forms a bearing surface for the return spring 55 of the rod 38.

La tige de commande 38 est de préférence réalisée par moulage et les rainures 56 sont réalisées venues de matière.The control rod 38 is preferably produced by molding and the grooves 56 are produced integrally.

Le blocage axial du contact mobile 34 sur la tige 36 est ainsi obtenu de manière économique et fiable, sans nécessiter de pièce de fixation supplémentaire.The axial locking of the movable contact 34 on the rod 36 is thus obtained economically and reliably, without requiring any additional fixing part.

On peut également prévoir un second mode de réalisation de l'invention dans lequel la partie centrale cylindrique de la tige de commande est dépourvue de rainures mais dans laquelle les surface de butée de la tige sont réalisées par déformation l'extrémité avant de la partie centrale de la tige, après le montage du contact mobile de la tige.It is also possible to provide a second embodiment of the invention in which the central cylindrical part of the control rod is devoid of grooves but in which the abutment surfaces of the rod are produced by deformation of the front end of the central part of the rod, after assembly of the movable contact of the rod.

Cela est notamment possible lorsque la tige est réalisée en matière plastique par déformation à chaud.This is especially possible when the rod is made of plastic by hot deformation.

Claims (7)

Contacteur de démarreur pour véhicule automobile, du type dans lequel un contact mobile (34) est monté coulissant axialement sur une tige de commande (38) entre une position avancée de repos et une position reculée active, du type dans lequel le contact mobile (34) est sollicité axialement vers sa position de repos par des moyens (54) de rappel élastique, du type dans lequel une surface d'appui (35) du contact mobile (34) coopère avec une surface de butée (58) de la tige (38) pour déterminer la position de repos du contact mobile (34) sur la tige (38), caractérisé en ce que la surface d'appui (62), ou la surface de butée (58), est réalisée par déformation du contact mobile (34), respectivement de la tige (38), lors du montage du contact mobile (34) sur la tige (38).Starter switch for a motor vehicle, of the type in which a movable contact (34) is slidably mounted axially on a control rod (38) between an advanced rest position and a retracted active position, of the type in which the movable contact (34 ) is biased axially towards its rest position by means (54) of elastic return, of the type in which a bearing surface (35) of the movable contact (34) cooperates with an abutment surface (58) of the rod ( 38) to determine the rest position of the movable contact (34) on the rod (38), characterized in that the bearing surface (62), or the abutment surface (58), is produced by deformation of the movable contact (34), respectively of the rod (38), during assembly of the movable contact (34) on the rod (38). Contacteur selon la revendication 1, caractérisé en ce que la tige de commande (38) comporte au moins une rainure radiale (56) qui s'étend axialement sur une longueur au moins égale à la longueur de la course du contact mobile (34) entre ses positions active et de repos, et en ce que le contact mobile (34) est déformé radialement lors de son montage sur la tige (38) de manière à former un ergot radial d'appui (62) qui est reçu en coulissement dans la rainure (56) de la tige (38) et qui coopère avec une face d'extrémité axiale de butée (58) de la rainure (56) pour déterminer la position de repos du contact mobile (34).Contactor according to claim 1, characterized in that the control rod (38) has at least one radial groove (56) which extends axially over a length at least equal to the length of the stroke of the movable contact (34) between its active and rest positions, and in that the movable contact (34) is deformed radially when it is mounted on the rod (38) so as to form a radial support lug (62) which is slidably received in the groove (56) of the rod (38) and which cooperates with an axial end end face (58) of the groove (56) to determine the rest position of the movable contact (34). Contacteur selon la revendication 2, caractérisé en ce que le contact mobile (34) est une plaque sensiblement rectangulaire percée en son centre d'un orifice circulaire (50) pour le passage de la tige de commande (38) qui est cylindrique, en ce que le contact mobile (34) comporte au moins une portion de largeur transversale réduite (60) qui s'étend au voisinage de l'orifice central (50), en ce que l'évidement (56) de la tige de commande (58) est agencé en regard de la portion transversale réduite (60), et en ce que la portion transversale réduite (60) est déformée radialement en agissant sur son bord extérieur de manière à former dans l'orifice (50) un ergot radial (62) qui est reçu dans l'évidement (56) de la tige (38).Contactor according to claim 2, characterized in that the movable contact (34) is a substantially rectangular plate pierced in its center with a circular orifice (50) for the passage of the control rod (38) which is cylindrical, in that that the movable contact (34) has at least a portion of width reduced transverse (60) which extends in the vicinity of the central orifice (50), in that the recess (56) of the control rod (58) is arranged opposite the reduced transverse portion (60), and in that the reduced transverse portion (60) is deformed radially by acting on its outer edge so as to form in the orifice (50) a radial lug (62) which is received in the recess (56) of the rod (38). Contacteur selon la revendication 3, caractérisé en ce que la rainure (56) présente en section transversale un profil en arc de cercle et en ce que l'ergot (62) formé par déformation du contact mobile (64) est de forme complémentaire.Contactor according to claim 3, characterized in that the groove (56) has in cross section a profile in an arc of a circle and in that the lug (62) formed by deformation of the movable contact (64) is of complementary shape. Contacteur selon l'une des revendications 3 ou 4, caractérisé en ce que la tige de commande (38) comporte deux rainures opposées (56) réparties symétriquement de part et d'autre de l'axe (X-X) de la tige de commande (38) et en ce que le contact mobile (34) comporte deux portions transversales réduites opposées (60), qui sont agencées de part et d'autre de l'orifice central (50) dans le sens de la largeur du contact mobile (34) rectangulaire, et qui sont destinées à être déformées transversalement pour former simultanément deux ergots d'appui (62).Contactor according to one of claims 3 or 4, characterized in that the control rod (38) has two opposite grooves (56) distributed symmetrically on either side of the axis (XX) of the control rod ( 38) and in that the movable contact (34) comprises two opposite reduced transverse portions (60), which are arranged on either side of the central orifice (50) in the direction of the width of the movable contact (34 ) rectangular, and which are intended to be deformed transversely to simultaneously form two support pins (62). Contacteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la tige de commande (38) est réalisée par moulage et en ce que les rainures (56) sont réalisées venues de matière avec la tige (38).Contactor according to any one of the preceding claims, characterized in that the control rod (38) is produced by molding and in that the grooves (56) are produced integrally with the rod (38). Démarreur de véhicule automobile, caractérisé en ce qu'il est muni d'un contacteur selon l'une quelconque des revendications précédentes.Motor vehicle starter, characterized in that it is provided with a contactor according to any one of the preceding claims.
EP19960118028 1995-12-05 1996-11-11 Starter contactor provided with a stop for movable contact made by deformation and the vehicle starter equipped with such a contactor Expired - Lifetime EP0778601B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9514366 1995-12-05
FR9514366A FR2741996B1 (en) 1995-12-05 1995-12-05 STARTER CONTACTOR PROVIDED WITH A MOBILE CONTACT STOPPED BY DEFORMATION AND STARTER PROVIDED WITH SUCH A CONTACTOR

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EP0778601A1 true EP0778601A1 (en) 1997-06-11
EP0778601B1 EP0778601B1 (en) 2001-05-23

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EP19960118028 Expired - Lifetime EP0778601B1 (en) 1995-12-05 1996-11-11 Starter contactor provided with a stop for movable contact made by deformation and the vehicle starter equipped with such a contactor

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EP (1) EP0778601B1 (en)
DE (1) DE69612945T2 (en)
FR (1) FR2741996B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2770334A1 (en) * 1997-10-28 1999-04-30 Valeo Equip Electr Moteur STARTER CONTACTOR COMPRISING AN IMPROVED MOBILE CONTACT AND MOTOR VEHICLE STARTER PROVIDED WITH SUCH A CONTACTOR

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008043186A1 (en) * 2008-10-27 2010-04-29 Robert Bosch Gmbh Electromagnetic switch for a starting device and method for switching the electromagnetic switch

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538037A1 (en) * 1982-12-21 1984-06-22 Paris & Du Rhone Composite shaft of electric starter contactor
EP0595698A1 (en) * 1992-10-26 1994-05-04 Valeo Equipements Electriques Moteur Contactor for an internal combustion engine starter of an automotive vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538037A1 (en) * 1982-12-21 1984-06-22 Paris & Du Rhone Composite shaft of electric starter contactor
EP0595698A1 (en) * 1992-10-26 1994-05-04 Valeo Equipements Electriques Moteur Contactor for an internal combustion engine starter of an automotive vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2770334A1 (en) * 1997-10-28 1999-04-30 Valeo Equip Electr Moteur STARTER CONTACTOR COMPRISING AN IMPROVED MOBILE CONTACT AND MOTOR VEHICLE STARTER PROVIDED WITH SUCH A CONTACTOR
EP0913847A1 (en) * 1997-10-28 1999-05-06 Valeo Equipements Electriques Moteur Starter contactor having an improve movable contact and vehicle starter equipped with such contactor

Also Published As

Publication number Publication date
DE69612945D1 (en) 2001-06-28
DE69612945T2 (en) 2001-09-06
FR2741996B1 (en) 1997-12-26
FR2741996A1 (en) 1997-06-06
EP0778601B1 (en) 2001-05-23

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