EP0913576A1 - Power control device for a starter of an automotive vehicle and antitheft device having such a device - Google Patents

Power control device for a starter of an automotive vehicle and antitheft device having such a device Download PDF

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Publication number
EP0913576A1
EP0913576A1 EP98120179A EP98120179A EP0913576A1 EP 0913576 A1 EP0913576 A1 EP 0913576A1 EP 98120179 A EP98120179 A EP 98120179A EP 98120179 A EP98120179 A EP 98120179A EP 0913576 A1 EP0913576 A1 EP 0913576A1
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EP
European Patent Office
Prior art keywords
pin
rotor body
stable
rotation
axis
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Granted
Application number
EP98120179A
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German (de)
French (fr)
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EP0913576B1 (en
Inventor
Michel Jouffroy
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Antivols Simplex SA
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Antivols Simplex SA
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Publication of EP0913576A1 publication Critical patent/EP0913576A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/10—Safety devices not otherwise provided for

Definitions

  • the invention relates to a device for controlling the power supply of a motor vehicle starter and a motor vehicle anti-theft device fitted with such a device.
  • the invention relates more particularly to a device for controlling the power supply of a motor vehicle starter, of the type comprising a body rotor which is rotatably mounted about its axis with respect to a stator body, of the type in which the rotor body is likely to rotate between a neutral angular position and an angular starting position in which it causes the electric supply of an electric starter of a motor thermal, passing through an intermediate position, and of the type in which the anti-theft device comprises anti-return means which, after the rotor body has reached its intermediate position when it goes from its starting position to its position neutral, prevent the rotor body from returning to its start position without first passing through its position neutral.
  • such locks have a lock rotary which when unlocked with a key compliant, activates an anti-theft mechanism which allows usually immobilize the vehicle's steering column to make the latter inconduitable.
  • the rotor of the lock is usually connected to an electrical switch so that order, after having unlocked the mechanism blocking the column, the power supply of a certain number of vehicle electrical circuits and in particular one thermal engine start circuit.
  • the "on" position corresponds to the power supply to the engine ignition circuit of the vehicle without which the engine cannot function.
  • the "start" position causes the current supply of an electric starter motor which is likely to rotate the motor shaft of the engine of the vehicle and which has the function of launching the thermal motor.
  • the starter which absorbs a lot of current, is scheduled to work for only a few seconds straight at each request. Indeed, it is better to repeat several times the start-up operation if it fails, each attempt to start should be short-lived.
  • the motorist brings, for example using the key of the latch, the rotor of the switch from a neutral position, by example the "stop” position or the “accessories” position, towards the "start” position via the "on” position. After its passage through the "start” position, the switch is returned by a return spring to its "on” position.
  • anti-return means which prevent accidental manipulation likely to lead to the rupture of one of the elements necessary for the smooth running of the vehicle.
  • the object of the invention is to design means check valves which are arranged between the control member manipulated by the driver, i.e. for example the key to the lock, and the column immobilizer or the switch, and which are both reliable, space-saving and inexpensive to make.
  • the invention provides a device for vehicle starter power supply control automobile, of the type comprising a rotor body which is mounted at rotation about its axis relative to a stator body, type in which the rotor body is likely to rotate between a neutral angular position and an angular position of start in which it causes the power supply of an electric starter of a heat engine, passing through an intermediate position, and of the type comprising means check valve which after the rotor body has reached its intermediate position when it passes from its position of start to neutral position, prevent rotor body return to its starting position without first passing by its neutral position, characterized in that the non-return means have a cam, which is integral in rotation with the rotor body, and which cooperates by a peripheral edge with a elastic pin folded in two branches, in that the pin is at least partially received in accommodation fitted out in the stator body, and in that the cam has a first abutment surface which when the rotor body is brought from its neutral position to its starting position, cooperates with a active branch of the
  • the invention also relates to a vehicle anti-theft device automobile with power control device electric starter incorporating any of previous features.
  • stator body 10 with respect to which is mounted rotation about an axis A1 a cam-shaped rotor body 12 which is intended to cooperate with a pin 14 housed in a housing 16 of the stator body 10 to form non-return means for a power control device electric motor starter (not shown) of motor vehicle.
  • the rotor body 12 is presented by example in the form of a plate which pivots around the axis A1 opposite an axial end face of the stator body 10 into which the housing 16 opens axially forward.
  • the rotor body 12 has a peripheral edge 18 whose profile in a radial direction relative to the axis AI varies depending on the angular position around this axis.
  • the circular edge 18 is intended to cooperate with the pin 14 to form anti-return means.
  • the pin 14 is folded substantially in a U or V shape. so as to present two branches 20, 22 and it is engaged axially in the housing 16 so for example that the free ends of the branches 20, 22 project in front of the transverse face of the stator body 10 in which opens the housing 16, to be able to cooperate with the edge peripheral 18 of the rotor body 12.
  • the housing 16 is delimited in the stator body 10 first of all by two lateral edges 24, 26 which, in a plane transverse perpendicular to the axis A1, are oriented so to delimit an open V towards the axis A1, the vertex 30 of the V thus formed being arranged radially towards the outside of the housing 16.
  • the two side edges 24, 26 are substantially symmetrical about a radius from the axis A1 passing through the vertex 30 of the V.
  • the angle formed by the two lateral edges of the V is for example between 40 and 60 °.
  • the housing 16 is moreover delimited radially inward by an internal edge 32 which has two sections 34, 36 separated by a radial recess 38.
  • the first section 34 which extends from one end internal radial of the first lateral edge 24, is substantially straight, directed at a perpendicular to the radius from axis A1 and passing through the top 30 of the housing 16.
  • the first section 34 extends substantially up to this radius.
  • the internal edge 32 then continues with the recess 38, oriented radially inwards, and by the second section 36 of the internal edge 32 which is arranged radially inward relative to the first section 34 and which joins the second lateral edge 26 of the housing 16.
  • the second section 36 of the internal edge 32 and the offset 38 delimit a recess 40 in the housing 16 which is arranged radially inward towards the axis A1 and which is further from the top 30 of the housing 16 than the angle of intersection between the first lateral edge 24 and the first section 34 of the internal edge 32.
  • the pin 14 is intended to be received in the housing 16 of so that one 22 of its branches is in abutment against the top of the housing 30 and determines a pivot axis for the whole of the pin 14 while the other 20 of the branches comes to bear elastically against the internal edge 32.
  • the pin 14 can occupy two stable positions in the housing 16.
  • a first position is shown for example in Figures 4 and 5 while a second stable position is shown in Figures 6 and 7.
  • the pin 14 is controlled towards either of its stable positions by the rotor body 12 which cooperates by its peripheral edge 18 with the branch 20, said active branch, which is in abutment against the edge internal 32 of housing 16.
  • the branch active 20 is supported in the corner of the housing formed by the first section 34 of the internal edge 32 and through the first edge side 24 of housing 16.
  • the active branch 20 is in abutment against the second lateral edge 26 of the housing 16 and it is received in the recess 40 in the housing 16.
  • the branch active 20 then bears radially against the second section 36 of the internal edge 32 or, as will be seen by the thereafter, it can be in abutment against the peripheral edge 18 of the rotor body 12.
  • the pin 14 passes through a position of unstable equilibrium which corresponds substantially to the position in which the two branches 20, 22 of the pin 14 are aligned along the radius from axis A1 passing through the vertex 30 of the housing 16, the active branch 20 then being in abutment against the first section 34 of the internal edge 32, near the dropout 38.
  • the pin 14 is then in a state of compression maximum, that is to say that in this intermediate position unstable, the two branches 20, 22 are closer together on the other than when the pin 14 is in one or the other of its stable positions.
  • the pin 14 will tend to must occupy either one of its positions stable.
  • the peripheral edge 18, which is likely to cooperate with the active branch 20 of the pin 14, has a series of sectors whose profile varies around the axis A1.
  • the terms “front” and “rear” are used with reference to the direction of rotation of the rotor body 12 with respect to the stator body 10.
  • the sectors of peripheral edge 18, intended to cooperate with the pin 14, scroll next to the housing 16 so that a sector placed in front scrolls in front of the housing 16 before a sector placed back when the rotor body 12 passes from its "stop” position to its "start” position.
  • the peripheral edge 18 thus has a first front sector 42 which is circular with axis A1 and radius R1 and which extends opposite the housing 16 when the rotor body 12 is in the "stop" position as illustrated in FIG. 4.
  • This first sector 42 is extended towards the rear by a flat 44 which is oriented so that its distance from the A1 axis decreases when traveling back and forth.
  • the flat 44 is delimited at the rear by a first step front 46 which extends substantially radially outwards so that it faces forward.
  • Behind the front recess 46 extends a sector rear 48 in an arc centered on the axis A1 and of radius R2 less than the radius R1 of the front sector 42.
  • the rear sector 48 is delimited towards the rear by a rear recess 50 which also extends radially outward so as to be facing forward.
  • the rear recess 50 extends radially outward to a radius R3 greater than radius R1 of the front sector 42.
  • the radii R1 and R2 of the front 42 and rear 48 sectors of the edge peripheral 18 of rotor body 12 are chosen so that neither of the two sectors cooperates with the edge active 20 of pin 14 when it is in its first stable position.
  • the radius R3 of the offset 50 is chosen so that the rear offset 50 forms a stop surface which cooperates with the active branch 20 for bring the pin 14 from its first to its second stable position as shown in Figure 6.
  • the branch active 20 of pin 14 is likely to form a stop for the rotor body 12 making it possible to limit the travel of it in the start position. Indeed, the active branch 20 is then clamped in a direction substantially tangential between the second lateral edge 26 of the housing 16 and the offset 50.
  • the respective orientation of the second lateral edge 26 and of the offset 50 is such that, caught between these two surfaces, the active arm 20 tends to be stressed radially inward towards the second section 36 of the edge internal 32 of housing 16.
  • the radius R2 of the sector rear 48 of the peripheral edge 18 is such that the active branch 20 of the pin 14 finds itself in support radially towards the interior against a rear end of sector 48.
  • the rotor body 12 has for example traveled about 120 °.
  • the active branch 20 is pushed radially outward through the flat 44 to what, when the active branch 20 is in contact with the front end of the flat 44 by which the latter is connects with the front sector 42, the active branch 20 is found pushed radially outward beyond the distance from axis A1 to the front end of the first section 34 of the inner edge 32, so that, the branch 20 being located radially more towards the outside than the recess 38, the latter no longer constitutes an obstacle to the return of the pin 14 to its first stable position.
  • the front end of the flat 44 drives the active branch 20 backwards to its unstable intermediate position then, as soon as this position is crossed, the active branch 20 slides the along the first section 34 to reach by its bistable effect its first stable position.
  • the intermediate position of the body rotor 10 illustrated in Figure 7 can for example correspond to an "on" position of an electrical switch power supply.
  • the neutral position illustrated in figure 11 can for example correspond to the position "accessories” or “stop” of such a switch.
  • the invention which has just been described makes it possible to carry out particularly reliable and economical anti-return methods to be implemented since they comprise only one part specific, the pin 14 which is a very economical piece.
  • the stator body 10 and rotor body 12 can be made up of any part of a control of the electrical supply of a starter, or even by any of two rotating parts of a lock motor vehicle steering column.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

A V- or U-shaped two-armed spring pin (20,22) is located in a stator housing (16) and has upper and lower stable positions. When the rotor cam (12) rotates anticlockwise to a start position a cam face (50) moves the pin from the upper to the lower position where clockwise rotation to an intermediate position engages a cam face (46) to prevent return to the start position without resetting anticlockwise rotation.

Description

L'invention concerne un dispositif de commande de l'alimentation électrique d'un démarreur de véhicule automobile et un antivol de véhicule automobile muni d'un tel dispositif.The invention relates to a device for controlling the power supply of a motor vehicle starter and a motor vehicle anti-theft device fitted with such a device.

L'invention concerne plus particulièrement un dispositif de commande de l'alimentation électrique d'un démarreur de véhicule automobile, du type comportant un corps de rotor qui est monté à rotation autour de son axe par rapport à un corps de stator, du type dans lequel le corps de rotor est susceptible de tourner entre une position angulaire neutre et une position angulaire de démarrage dans laquelle il provoque l'alimentation électrique d'un démarreur électrique d'un moteur thermique, en passant par une position intermédiaire, et du type dans lequel l'antivol comporte des moyens d'anti-retour qui, après que le corps de rotor a atteint sa position intermédiaire lorsqu'il passe de sa position de démarrage vers sa position neutre, empêchent le corps de rotor de retourner vers sa position de démarrage sans passer d'abord par sa position neutre.The invention relates more particularly to a device for controlling the power supply of a motor vehicle starter, of the type comprising a body rotor which is rotatably mounted about its axis with respect to a stator body, of the type in which the rotor body is likely to rotate between a neutral angular position and an angular starting position in which it causes the electric supply of an electric starter of a motor thermal, passing through an intermediate position, and of the type in which the anti-theft device comprises anti-return means which, after the rotor body has reached its intermediate position when it goes from its starting position to its position neutral, prevent the rotor body from returning to its start position without first passing through its position neutral.

On trouve de tels dispositifs dans de nombreux antivols de véhicule automobile.There are such devices in many locks of motor vehicle.

En général, de tels antivols comportent un verrou rotatif qui, lorsqu'il est déverrouillé à l'aide d'une clé conforme, permet d'actionner un mécanisme d'antivol qui permet généralement d'immobiliser la colonne de direction du véhicule pour rendre ce dernier inconduisible.In general, such locks have a lock rotary which when unlocked with a key compliant, activates an anti-theft mechanism which allows usually immobilize the vehicle's steering column to make the latter inconduitable.

Par ailleurs, le rotor du verrou de l'antivol est généralement relié à un commutateur électrique de manière à commander, après avoir effectué le déverrouillage du mécanisme de blocage de la colonne, l'alimentation électrique d'un certain nombre de circuits électriques du véhicule et notamment un circuit de démarrage du moteur thermique.In addition, the rotor of the lock is usually connected to an electrical switch so that order, after having unlocked the mechanism blocking the column, the power supply of a certain number of vehicle electrical circuits and in particular one thermal engine start circuit.

Ainsi, en faisant pivoter le rotor du verrou à l'aide de la clé, il est possible de faire passer le rotor d'un tel commutateur depuis une position "stop" dans laquelle la plupart des circuits électriques du véhicule sont coupés de l'alimentation provenant de la batterie à trois autres positions "accessoires", "marche" et "démarrage" dans lesquelles le commutateur électrique établit l'alimentation de différents circuits et organes du véhicule.So by rotating the latch rotor using of the key, it is possible to pass the rotor of such switch from a "stop" position in which most vehicle electrical circuits are cut off battery power at three other positions "accessories", "walking" and "starting" in which the electric switch establishes power for different vehicle circuits and components.

Notamment, la position "marche" correspond à l'alimentation électrique du circuit d'allumage du moteur thermique du véhicule sans lequel le moteur thermique ne peut fonctionner. In particular, the "on" position corresponds to the power supply to the engine ignition circuit of the vehicle without which the engine cannot function.

De manière connue, la position "démarrage" provoque l'alimentation en courant d'un moteur électrique de démarreur qui est susceptible d'entraíner en rotation l'arbre moteur du moteur thermique du véhicule et qui a pour fonction de lancer le moteur thermique.As is known, the "start" position causes the current supply of an electric starter motor which is likely to rotate the motor shaft of the engine of the vehicle and which has the function of launching the thermal motor.

Le démarreur, qui absorbe beaucoup de courant, est prévu pour ne fonctionner que quelques secondes d'affilée à chaque sollicitation. En effet, il est préférable de répéter plusieurs fois l'opération de démarrage si elle échoue, chaque tentative de démarrage devant être de courte durée.The starter, which absorbs a lot of current, is scheduled to work for only a few seconds straight at each request. Indeed, it is better to repeat several times the start-up operation if it fails, each attempt to start should be short-lived.

Ainsi, pour démarrer le moteur thermique de son véhicule, l'automobiliste amène, par exemple à l'aide de la clé du verrou, le rotor du commutateur d'une position neutre, par exemple la position "stop" ou la position "accessoires", vers la position "démarrage" en passant par la position "marche". Après son passage par la position "démarrage", le commutateur est ramené par un ressort de rappel vers sa position "marche".So to start the engine of its vehicle, the motorist brings, for example using the key of the latch, the rotor of the switch from a neutral position, by example the "stop" position or the "accessories" position, towards the "start" position via the "on" position. After its passage through the "start" position, the switch is returned by a return spring to its "on" position.

Toutefois, on s'est aperçu qu'il y avait de grands risques de détérioration du démarreur ou du moteur thermique lorsque le conducteur provoque une nouvelle alimentation du moteur électrique du démarreur alors que le moteur thermique est déjà lancé.However, we realized that there were large risk of damage to the starter or the combustion engine when the driver causes a new supply of the electric motor of the starter while the engine is already launched.

Un autre risque existe aussi, alors même que le moteur thermique n'a pas encore été correctement lancé par une première tentative de démarrage, lorsque l'utilisateur provoque trop rapidement un ré-enclenchement du démarreur, avant que les différentes pièces mobiles du démarreur et de la transmission du véhicule n'aient reprises leur position initiale et se soient arrêtées de tourner.Another risk also exists, even though the engine thermal has not yet been properly launched by a first attempt to start, when the user provokes too much quickly re-engage the starter, before the different moving parts of the starter and transmission vehicle have returned to their original position and have stopped turning.

Dans ce but, il a déjà été proposé des moyens d'anti-retour qui permettent d'éviter toute manipulation accidentelle susceptible de conduire à la rupture d'un des éléments mécaniques nécessaires à la bonne marche du véhicule.To this end, anti-return means have already been proposed. which prevent accidental manipulation likely to lead to the rupture of one of the elements necessary for the smooth running of the vehicle.

Le but de l'invention est de concevoir des moyens d'anti-retour qui sont agencés entre l'organe de commande manipulé par le conducteur, à savoir par exemple la clé du verrou, et le mécanisme d'immobilisation de la colonne ou le commutateur, et qui soient à la fois fiables, peu encombrants et peu coûteux à réaliser.The object of the invention is to design means check valves which are arranged between the control member manipulated by the driver, i.e. for example the key to the lock, and the column immobilizer or the switch, and which are both reliable, space-saving and inexpensive to make.

Dans ce but, l'invention propose un dispositif de commande de l'alimentation électrique d'un démarreur de véhicule automobile, du type comportant un corps de rotor qui est monté à rotation autour de son axe par rapport à un corps de stator, du type dans lequel le corps de rotor est susceptible de tourner entre une position angulaire neutre et une position angulaire de démarrage dans laquelle il provoque l'alimentation électrique d'un démarreur électrique d'un moteur thermique, en passant par une position intermédiaire, et du type comportant des moyens d'anti-retour qui, après que le corps de rotor a atteint sa position intermédiaire lorsqu'il passe de sa position de démarrage vers sa position neutre, empêchent le corps de rotor de retourner vers sa position de démarrage sans passer d'abord par sa position neutre, caractérisé en ce que les moyens d'anti-retour comportent une came, qui est solidaire en rotation du corps de rotor, et qui coopère par un bord périphérique avec une épingle élastique repliée en deux branches, en ce que l'épingle est au moins partiellement reçue dans un logement aménagé dans le corps de stator, et en ce que la came comporte une première surface de butée qui, lorsque le corps de rotor est amené de sa position neutre à sa position de démarrage, coopère avec une branche active de l'épingle pour amener celle-ci d'une première position stable à une seconde position stable dans laquelle l'épingle est susceptible de coopérer avec une seconde surface de butée de la came pour empêcher le corps de rotor d'atteindre sa position de démarrage.To this end, the invention provides a device for vehicle starter power supply control automobile, of the type comprising a rotor body which is mounted at rotation about its axis relative to a stator body, type in which the rotor body is likely to rotate between a neutral angular position and an angular position of start in which it causes the power supply of an electric starter of a heat engine, passing through an intermediate position, and of the type comprising means check valve which after the rotor body has reached its intermediate position when it passes from its position of start to neutral position, prevent rotor body return to its starting position without first passing by its neutral position, characterized in that the non-return means have a cam, which is integral in rotation with the rotor body, and which cooperates by a peripheral edge with a elastic pin folded in two branches, in that the pin is at least partially received in accommodation fitted out in the stator body, and in that the cam has a first abutment surface which when the rotor body is brought from its neutral position to its starting position, cooperates with a active branch of the pin to bring it for a first stable position to a second stable position in which the pin is capable of cooperating with a second surface cam stopper to prevent rotor body from reaching its starting position.

Selon d'autres caractéristiques de l'invention :

  • l'épingle est engagée axialement dans le logement de telle sorte que ses deux branches sont rapprochées l'une de l'autre par compression élastique selon une direction sensiblement radiale, et l'épingle est susceptible d'occuper dans le logement ses deux positions stables qui sont séparées par une position instable de compression maximale des branches de l'épingle ;
  • dans sa deuxième position stable, la branche active de l'épingle est agencée radialement plus vers l'intérieur par rapport à l'axe de rotation du corps de rotor que dans sa première position stable ;
  • lorsque l'épingle passe de l'une à l'autre de ses positions d'équilibre stable, la branche active de l'épingle se déplace en regard d'un bord interne du logement qui comporte deux tronçons séparés par un décrochement tourné vers l'avant ;
  • le logement est délimité par deux bords latéraux qui forment un V ouvert en direction de l'axe de rotation du corps de rotor et, dans chacune de ses positions stables, la branche active de l'épingle est en appui selon une direction tangentielle contre l'un des bords latéraux ;
  • entre ses deux positions stables, l'épingle pivote autour de l'un de ses deux bras qui est reçu en appui radialement vers l'extérieur au sommet du V formé par les bords latéraux du logement ;
  • les deux positions stables de l'épingle sont sensiblement symétriques par rapport à un rayon passant par l'axe de rotation du corps de rotor et par le sommet du V formé par les bords latéraux du logement ;
  • la seconde surface de butée de la came est agencée en avant de la première surface de butée le long du bord périphérique de la came dans le sens de rotation du corps de rotor de sa position neutre à sa position de démarrage ;
  • les deux surfaces de butée de la came sont formées chacune par un décrochement radial tourné vers l'avant aménagé dans le bord périphérique de la came ;
  • les deux décrochements délimitent un secteur du bord périphérique qui est contenu radialement à l'intérieur d'un arc de cercle centré sur l'axe de rotation du corps de rotor et dont le rayon est inférieur à la distance entre la branche active de l'épingle et l'axe de rotation du corps de rotor lorsque l'épingle est dans sa première position stable ;
  • en avant de la seconde surface de butée de la came, le bord périphérique présente un secteur de rampe qui est tourné vers l'arrière de manière à ramener l'épingle depuis sa seconde position, radialement vers l'extérieur et angulairement vers sa première position stable lorsque le corps de rotor est ramené depuis sa position intermédiaire en direction de sa position neutre ;
  • en avant du secteur de rampe, le bord périphérique de la came présente un secteur en arc de cercle centré sur l'axe de rotation du corps de rotor et dont le diamètre est supérieur à la distance entre la branche active de l'épingle et l'axe de rotation du corps de rotor lorsque l'épingle est dans sa position instable de compression maximale, mais inférieur à la distance entre la branche active de l'épingle et l'axe de rotation du corps de rotor lorsque l'épingle est dans sa première position stable.
According to other characteristics of the invention:
  • the pin is engaged axially in the housing so that its two branches are brought closer to each other by elastic compression in a substantially radial direction, and the pin is capable of occupying in the housing its two stable positions which are separated by an unstable position of maximum compression of the branches of the pin;
  • in its second stable position, the active branch of the pin is arranged radially more inward relative to the axis of rotation of the rotor body than in its first stable position;
  • when the pin passes from one to the other of its positions of stable equilibrium, the active branch of the pin moves opposite an internal edge of the housing which comprises two sections separated by a recess facing towards the 'before;
  • the housing is delimited by two lateral edges which form an open V in the direction of the axis of rotation of the rotor body and, in each of its stable positions, the active branch of the pin bears in a tangential direction against the 'one of the side edges;
  • between its two stable positions, the pin pivots around one of its two arms which is received in support radially outwards at the top of the V formed by the lateral edges of the housing;
  • the two stable positions of the pin are substantially symmetrical with respect to a radius passing through the axis of rotation of the rotor body and through the top of the V formed by the lateral edges of the housing;
  • the second abutment surface of the cam is arranged in front of the first abutment surface along the peripheral edge of the cam in the direction of rotation of the rotor body from its neutral position to its starting position;
  • the two abutment surfaces of the cam are each formed by a forward-facing radial recess arranged in the peripheral edge of the cam;
  • the two recesses delimit a sector of the peripheral edge which is contained radially inside an arc of a circle centered on the axis of rotation of the rotor body and whose radius is less than the distance between the active branch of the pin and the axis of rotation of the rotor body when the pin is in its first stable position;
  • in front of the second abutment surface of the cam, the peripheral edge has a ramp sector which is turned towards the rear so as to bring the pin back from its second position, radially outwards and angularly towards its first position stable when the rotor body is brought back from its intermediate position towards its neutral position;
  • in front of the ramp sector, the peripheral edge of the cam has a sector in an arc centered on the axis of rotation of the rotor body and whose diameter is greater than the distance between the active branch of the pin and l axis of rotation of the rotor body when the pin is in its unstable position of maximum compression, but less than the distance between the active branch of the pin and the axis of rotation of the rotor body when the pin is in his first stable position.

L'invention a aussi pour objet un antivol de véhicule automobile muni d'un dispositif de commande de l'alimentation électrique d'un démarreur incorporant l'une quelconque des caractéristiques précédentes.The invention also relates to a vehicle anti-theft device automobile with power control device electric starter incorporating any of previous features.

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 schématique de face d'un corps de stator d'un dispositif de commande selon l'invention ;
  • la figure 2 est une vue similaire à celle de la figure 1 illustrant la came d'un corps de rotor du dispositif selon l'invention ;
  • la figure 3 est une vue en plan de l'épingle élastique repliée en deux branches ;
  • la figure 4 est une vue de face montée des éléments des figures 1 à 3 dans laquelle le corps de rotor est en position "stop" et l'épingle en première position stable ;
  • la figure 5 est une vue similaire à celle de la figure 4 dans laquelle le corps de rotor a commencé de pivoter en direction d'une position intermédiaire ;
  • la figure 6 est une vue similaire à celle de la figure 5 dans laquelle le corps de rotor a pivoté vers sa position de démarrage entraínant avec lui l'épingle vers sa seconde position stable ;
  • la figure 7 est une vue similaire à celle de la figure 6 dans laquelle le corps de rotor a été ramené vers sa position intermédiaire, où l'on peut voir par ailleurs que l'épingle, en seconde position stable, empêche le retour direct du corps de rotor vers sa position de démarrage ;
  • la figure 8 est une vue partielle agrandie des éléments de la figure 7 dans laquelle on a illustré le corps de rotor lorsqu'il est ramené de sa position intermédiaire à une position neutre ;
  • les figures 9 et 10 illustrent de manière plus précise comment l'épingle est ramenée vers sa première position stable lorsque le corps de rotor est ramené vers sa position neutre ; et
  • la figure 11 est une vue similaire à celles des figures 4 à 7 dans laquelle on a illustré le corps de rotor dans une position neutre.
Other characteristics and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended drawings in which:
  • Figure 1 is a schematic front view of a stator body of a control device according to the invention;
  • Figure 2 is a view similar to that of Figure 1 illustrating the cam of a rotor body of the device according to the invention;
  • Figure 3 is a plan view of the elastic pin folded into two branches;
  • Figure 4 is a mounted front view of the elements of Figures 1 to 3 wherein the rotor body is in the "stop" position and the pin in the first stable position;
  • Figure 5 is a view similar to that of Figure 4 in which the rotor body has started to pivot towards an intermediate position;
  • Figure 6 is a view similar to that of Figure 5 in which the rotor body has pivoted to its starting position causing it with the pin to its second stable position;
  • FIG. 7 is a view similar to that of FIG. 6 in which the rotor body has been brought back to its intermediate position, where it can also be seen that the pin, in the second stable position, prevents the direct return of the rotor body to its start position;
  • Figure 8 is an enlarged partial view of the elements of Figure 7 in which the rotor body has been illustrated when it is returned from its intermediate position to a neutral position;
  • Figures 9 and 10 illustrate more precisely how the pin is returned to its first stable position when the rotor body is returned to its neutral position; and
  • Figure 11 is a view similar to those of Figures 4 to 7 in which the rotor body is illustrated in a neutral position.

On a représenté sur les figures de manière très schématique un corps de stator 10 par rapport auquel est monté à rotation autour d'un axe A1 un corps de rotor en forme de came 12 qui est destiné à coopérer avec une épingle 14 logée dans un logement 16 du corps de stator 10 pour former des moyens d'anti-retour pour un dispositif de commande de l'alimentation électrique d'un démarreur (non représenté) de moteur thermique de véhicule automobile.We have shown in the figures very schematically a stator body 10 with respect to which is mounted rotation about an axis A1 a cam-shaped rotor body 12 which is intended to cooperate with a pin 14 housed in a housing 16 of the stator body 10 to form non-return means for a power control device electric motor starter (not shown) of motor vehicle.

A titre d'exemple, le corps de rotor 12 se présente par exemple sous la forme d'une plaque qui pivote autour de l'axe A1 en regard d'une face d'extrémité axiale du corps de stator 10 dans laquelle débouche axialement vers l'avant le logement 16.By way of example, the rotor body 12 is presented by example in the form of a plate which pivots around the axis A1 opposite an axial end face of the stator body 10 into which the housing 16 opens axially forward.

Le corps de rotor 12 comporte un bord périphérique 18 dont le profil selon une direction radiale par rapport à l'axe AI varie en fonction de la position angulaire autour de cet axe. Le bord circulaire 18 est destiné à coopérer avec l'épingle 14 pour former des moyens d'anti-retour.The rotor body 12 has a peripheral edge 18 whose profile in a radial direction relative to the axis AI varies depending on the angular position around this axis. The circular edge 18 is intended to cooperate with the pin 14 to form anti-return means.

L'épingle 14 est repliée sensiblement en U ou en V de manière à présenter deux branches 20, 22 et elle est engagée axialement dans le logement 16 de telle sorte par exemple que les extrémités libres des branches 20, 22 dépassent en avant de la face transversale du corps de stator 10 dans laquelle débouche le logement 16, pour pouvoir coopérer avec le bord périphérique 18 du corps de rotor 12.The pin 14 is folded substantially in a U or V shape. so as to present two branches 20, 22 and it is engaged axially in the housing 16 so for example that the free ends of the branches 20, 22 project in front of the transverse face of the stator body 10 in which opens the housing 16, to be able to cooperate with the edge peripheral 18 of the rotor body 12.

Lorsqu'elle est engagée dans le logement 16, l'épingle 14 est comprimée de manière à rapprocher ses deux branches 20, 22.When it is engaged in the housing 16, the pin 14 is compressed so as to bring its two branches 20 closer together, 22.

Le logement 16 est délimité dans le corps de stator 10 tout d'abord par deux bords latéraux 24, 26 qui, dans un plan transversal perpendiculaire à l'axe A1, sont orientés de manière à délimiter un V ouvert en direction de l'axe A1, le sommet 30 du V ainsi formé étant agencé radialement vers l'extérieur du logement 16.The housing 16 is delimited in the stator body 10 first of all by two lateral edges 24, 26 which, in a plane transverse perpendicular to the axis A1, are oriented so to delimit an open V towards the axis A1, the vertex 30 of the V thus formed being arranged radially towards the outside of the housing 16.

Comme on peut le voir plus particulièrement sur la figure 1, les deux bords latéraux 24, 26 sont sensiblement symétriques par rapport à un rayon issu de l'axe A1 passant par le sommet 30 du V. L'angle formé par les deux bords latéraux du V est par exemple compris entre 40 et 60°.As we can see more particularly on the Figure 1, the two side edges 24, 26 are substantially symmetrical about a radius from the axis A1 passing through the vertex 30 of the V. The angle formed by the two lateral edges of the V is for example between 40 and 60 °.

Le logement 16 est par ailleurs délimité radialement vers l'intérieur par un bord interne 32 qui présente deux tronçons 34, 36 séparés par un décrochement radial 38.The housing 16 is moreover delimited radially inward by an internal edge 32 which has two sections 34, 36 separated by a radial recess 38.

Le premier tronçon 34, qui s'étend depuis une extrémité radiale interne du premier bord latéral 24, est sensiblement rectiligne, dirigé selon une perpendiculaire au rayon issu de l'axe A1 et passant par le sommet 30 du logement 16. Le premier tronçon 34 s'étend sensiblement jusqu'à ce rayon.The first section 34, which extends from one end internal radial of the first lateral edge 24, is substantially straight, directed at a perpendicular to the radius from axis A1 and passing through the top 30 of the housing 16. The first section 34 extends substantially up to this radius.

Le bord interne 32 se poursuit alors par le décrochement 38, orienté radialement vers l'intérieur, et par le second tronçon 36 du bord interne 32 qui est aménagé radialement vers l'intérieur par rapport au premier tronçon 34 et qui rejoint le second bord latéral 26 du logement 16.The internal edge 32 then continues with the recess 38, oriented radially inwards, and by the second section 36 of the internal edge 32 which is arranged radially inward relative to the first section 34 and which joins the second lateral edge 26 of the housing 16.

Ainsi, le second tronçon 36 du bord interne 32 et le décrochement 38 délimitent un renfoncement 40 du logement 16 qui est agencé radialement vers l'intérieur en direction de l'axe A1 et qui est plus éloigné du sommet 30 du logement 16 que l'angle d'intersection entre le premier bord latéral 24 et le premier tronçon 34 du bord interne 32.Thus, the second section 36 of the internal edge 32 and the offset 38 delimit a recess 40 in the housing 16 which is arranged radially inward towards the axis A1 and which is further from the top 30 of the housing 16 than the angle of intersection between the first lateral edge 24 and the first section 34 of the internal edge 32.

Comme on peut le voir sur les différentes figures, l'épingle 14 est destinée à être reçue dans le logement 16 de telle sorte que l'une 22 de ses branches est en appui contre le sommet du logement 30 et détermine un axe de pivotement pour l'ensemble de l'épingle 14 tandis que l'autre 20 des branches vient en appui élastiquement contre le bord interne 32.As we can see in the different figures, the pin 14 is intended to be received in the housing 16 of so that one 22 of its branches is in abutment against the top of the housing 30 and determines a pivot axis for the whole of the pin 14 while the other 20 of the branches comes to bear elastically against the internal edge 32.

Selon l'invention, l'épingle 14 peut occuper deux positions stables dans le logement 16. Une première position est représentée par exemple sur les figures 4 et 5 tandis qu'une seconde position stable est représentée aux figures 6 et 7.According to the invention, the pin 14 can occupy two stable positions in the housing 16. A first position is shown for example in Figures 4 and 5 while a second stable position is shown in Figures 6 and 7.

Selon l'invention, l'épingle 14 est commandée vers l'une ou l'autre de ses positions stables par le corps de rotor 12 qui coopère par son bord périphérique 18 avec la branche 20, dite branche active, laquelle est en appui contre le bord interne 32 du logement 16.According to the invention, the pin 14 is controlled towards either of its stable positions by the rotor body 12 which cooperates by its peripheral edge 18 with the branch 20, said active branch, which is in abutment against the edge internal 32 of housing 16.

Ainsi, dans sa première position stable, la branche active 20 est en appui dans l'angle du logement formé par le premier tronçon 34 du bord interne 32 et par le premier bord latéral 24 du logement 16.Thus, in its first stable position, the branch active 20 is supported in the corner of the housing formed by the first section 34 of the internal edge 32 and through the first edge side 24 of housing 16.

Au contraire, dans la seconde position stable de l'épingle 14, la branche active 20 est en appui contre le second bord latéral 26 du logement 16 et elle est reçue dans le renfoncement 40 du logement 16. Eventuellement, la branche active 20 est alors en appui radialement contre le second tronçon 36 du bord interne 32 ou, comme cela sera vu par la suite, elle peut être en appui contre le bord périphérique 18 du corps de rotor 12.On the contrary, in the second stable position of the pin 14, the active branch 20 is in abutment against the second lateral edge 26 of the housing 16 and it is received in the recess 40 in the housing 16. Optionally, the branch active 20 then bears radially against the second section 36 of the internal edge 32 or, as will be seen by the thereafter, it can be in abutment against the peripheral edge 18 of the rotor body 12.

Dans tous les cas, pour passer de l'une a l'autre de ses positions stables, l'épingle 14 passe par une position d'équilibre instable qui correspond sensiblement à la position dans laquelle les deux branches 20, 22 de l'épingle 14 sont alignées selon le rayon issu de l'axe A1 passant par le sommet 30 du logement 16, la branche active 20 étant alors en appui contre le premier tronçon 34 du bord interne 32, à proximité du décrochement 38.In any case, to switch from one to the other of its stable positions, the pin 14 passes through a position of unstable equilibrium which corresponds substantially to the position in which the two branches 20, 22 of the pin 14 are aligned along the radius from axis A1 passing through the vertex 30 of the housing 16, the active branch 20 then being in abutment against the first section 34 of the internal edge 32, near the dropout 38.

L'épingle 14 est alors dans un état de compression maximale, c'est-à-dire que dans cette position intermédiaire instable, les deux branches 20, 22 sont plus rapprochées l'une de l'autre que lorsque l'épingle 14 est dans l'une ou l'autre de ses positions stables. The pin 14 is then in a state of compression maximum, that is to say that in this intermediate position unstable, the two branches 20, 22 are closer together on the other than when the pin 14 is in one or the other of its stable positions.

Ainsi, à l'état libre, l'épingle 14 aura tendance à occuper obligatoirement soit l'une soit l'autre de ses positions stables.Thus, in the free state, the pin 14 will tend to must occupy either one of its positions stable.

Comme on peut le voir plus particulièrement sur la figure 2, le bord périphérique 18, qui est susceptible de coopérer avec la branche active 20 de l'épingle 14, présente une série de secteurs dont le profil varie autour de l'axe A1.As we can see more particularly on the Figure 2, the peripheral edge 18, which is likely to cooperate with the active branch 20 of the pin 14, has a series of sectors whose profile varies around the axis A1.

Dans cette description, les termes "avant" et "arrière" sont utilisés en référence au sens de rotation du corps de rotor 12 par rapport au corps de stator 10. Ainsi, on considère que lorsque le corps de rotor 12 tourne de sa position "stop" vers sa position "démarrage", c'est-à-dire dans le sens anti-horaire sur les figures, il tourne vers l'avant. Ainsi, les secteurs du bord périphérique 18, destinés à coopérer avec l'épingle 14, défilent en regard du logement 16 de telle sorte qu'un secteur placé en avant défile devant le logement 16 avant un secteur placé en arrière lorsque le corps de rotor 12 passe de sa position "stop" à sa position "démarrage".In this description, the terms "front" and "rear" are used with reference to the direction of rotation of the rotor body 12 with respect to the stator body 10. Thus, it is considered that when the rotor body 12 turns from its "stop" position towards its "start" position, that is to say counterclockwise in the figures, it turns forward. Thus, the sectors of peripheral edge 18, intended to cooperate with the pin 14, scroll next to the housing 16 so that a sector placed in front scrolls in front of the housing 16 before a sector placed back when the rotor body 12 passes from its "stop" position to its "start" position.

Le bord périphérique 18 présente ainsi un premier secteur avant 42 qui est circulaire d'axe A1 et de rayon R1 et qui s'étend en regard du logement 16 lorsque le corps de rotor 12 est en position "stop" comme illustré à la figure 4.The peripheral edge 18 thus has a first front sector 42 which is circular with axis A1 and radius R1 and which extends opposite the housing 16 when the rotor body 12 is in the "stop" position as illustrated in FIG. 4.

Ce premier secteur 42 est prolongé vers l'arrière par un méplat 44 qui est orienté de telle sorte que sa distance à l'axe A1 diminue lorsqu'on le parcourt d'avant en arrière. Le méplat 44 est délimité à l'arrière par un premier décrochement avant 46 qui s'étend sensiblement radialement vers l'extérieur de manière à être tourné vers l'avant.This first sector 42 is extended towards the rear by a flat 44 which is oriented so that its distance from the A1 axis decreases when traveling back and forth. The flat 44 is delimited at the rear by a first step front 46 which extends substantially radially outwards so that it faces forward.

En arrière du décrochement avant 46 s'étend un secteur arrière 48 en arc de cercle centré sur l'axe A1 et de rayon R2 inférieur au rayon R1 du secteur avant 42. Le secteur arrière 48 est délimité vers l'arrière par un décrochement arrière 50 qui s'étend lui aussi radialement vers l'extérieur de manière à être tourné vers l'avant. Le décrochement arrière 50 s'étend radialement vers l'extérieur jusqu'à un rayon R3 supérieur au rayon R1 du secteur avant 42.Behind the front recess 46 extends a sector rear 48 in an arc centered on the axis A1 and of radius R2 less than the radius R1 of the front sector 42. The rear sector 48 is delimited towards the rear by a rear recess 50 which also extends radially outward so as to be facing forward. The rear recess 50 extends radially outward to a radius R3 greater than radius R1 of the front sector 42.

Le fonctionnement des moyens d'anti-retour constitués par le corps de stator 10, le corps de rotor 12 et l'épingle 14 va maintenant être plus particulièrement décrit en regard des figures 4 à 11.The functioning of the anti-return means constituted by the stator body 10, the rotor body 12 and the pin 14 will now be more particularly described with regard to Figures 4 to 11.

Comme on peut le voir sur les figures 4 et 5, les rayons R1 et R2 des secteurs avant 42 et arrière 48 du bord périphérique 18 du corps de rotor 12 sont choisis de telle sorte que ni l'un ni l'autre des deux secteurs ne coopère avec le bord actif 20 de l'épingle 14 lorsque celle-ci est dans sa première position stable. Au contraire, le rayon R3 du décrochement 50 est choisi de manière à ce que le décrochement arrière 50 forme une surface de butée qui coopère avec la branche active 20 pour amener l'épingle 14 de sa première à sa seconde position stable comme cela est illustré à la figure 6.As can be seen in Figures 4 and 5, the radii R1 and R2 of the front 42 and rear 48 sectors of the edge peripheral 18 of rotor body 12 are chosen so that neither of the two sectors cooperates with the edge active 20 of pin 14 when it is in its first stable position. On the contrary, the radius R3 of the offset 50 is chosen so that the rear offset 50 forms a stop surface which cooperates with the active branch 20 for bring the pin 14 from its first to its second stable position as shown in Figure 6.

Ainsi, lorsque le corps de rotor 12 tourne vers l'avant de sa position "stop" représentée à la figure 4 à sa position de démarrage représentée à la figure 6, l'épingle 14 n'est tout d'abord pas sollicitée par le bord périphérique 18 jusqu'à ce que le décrochement arrière 50 vienne au contact de la branche active 20 pour l'amener avec lui vers l'avant en forçant ainsi l'épingle 14 vers sa seconde position stable.So when the rotor body 12 rotates forward from its "stop" position shown in FIG. 4 to its position starting shown in Figure 6, the pin 14 is not all first not acted on by peripheral edge 18 until the rear hanger 50 comes into contact with the branch active 20 to bring it forward with it forcing so the pin 14 to its second stable position.

Comme on peut le voir sur la figure 6, la branche active 20 de l'épingle 14 est susceptible de former une butée pour le corps de rotor 12 permettant de limiter la course de celui-ci en position de démarrage. En effet, la branche active 20 se trouve alors serrée selon une direction sensiblement tangentielle entre le second bord latéral 26 du logement 16 et le décrochement 50.As can be seen in Figure 6, the branch active 20 of pin 14 is likely to form a stop for the rotor body 12 making it possible to limit the travel of it in the start position. Indeed, the active branch 20 is then clamped in a direction substantially tangential between the second lateral edge 26 of the housing 16 and the offset 50.

Comme on peut le voir par ailleurs sur cette figure, l'orientation respective du second bord latéral 26 et du décrochement 50 est telle que, pris en tenaille entre ces deux surfaces, le bras actif 20 tend à être sollicité radialement vers l'intérieur en direction du second tronçon 36 du bord interne 32 du logement 16. Toutefois, dans l'exemple de réalisation illustré sur les figures, le rayon R2 du secteur arrière 48 du bord périphérique 18 est tel que la branche active 20 de l'épingle 14 se retrouve en appui radialement vers l'intérieur contre une extrémité arrière du secteur 48.As can be seen elsewhere in this figure, the respective orientation of the second lateral edge 26 and of the offset 50 is such that, caught between these two surfaces, the active arm 20 tends to be stressed radially inward towards the second section 36 of the edge internal 32 of housing 16. However, in the example of realization illustrated in the figures, the radius R2 of the sector rear 48 of the peripheral edge 18 is such that the active branch 20 of the pin 14 finds itself in support radially towards the interior against a rear end of sector 48.

Entre sa position "stop" et sa position de démarrage, le corps de rotor 12 a par exemple parcouru environ 120°.Between its "stop" position and its start position, the rotor body 12 has for example traveled about 120 °.

Lorsque le corps de rotor 12 est ramené vers l'arrière vers une position intermédiaire illustrée à la figure 7, la branche active 20 de l'épingle 14 parcourt le secteur arrière 48 et, dans cette position intermédiaire, elle tombe en appui contre l'extrémité arrière du méplat 44 lorsque le décrochement avant 46 se retrouve en arrière du second bord latéral 26 du logement 16.When the rotor body 12 is brought back towards an intermediate position illustrated in FIG. 7, the active branch 20 of the pin 14 traverses the rear sector 48 and, in this intermediate position, it falls in support against the rear end of the flat 44 when the recess front 46 is found behind the second lateral edge 26 of the housing 16.

A ce moment-là, il est impossible de ramener le corps de rotor 12 vers l'avant vers sa position de démarrage. En effet, le décrochement avant 46 est alors en appui contre la branche active 20 elle-même en appui contre le second bord latéral 26 du logement 16. At that time, it is impossible to bring back the body rotor 12 forward towards its starting position. In Indeed, the recess before 46 is then in abutment against the active branch 20 itself pressing against the second edge side 26 of housing 16.

Pour pouvoir de nouveau ramener le corps de rotor 12 vers sa position de démarrage, il est nécessaire tout d'abord de ramener l'épingle 14 vers sa première position stable illustrée sur les figures 4 et 5.To be able to return the rotor body 12 again towards its starting position, it is first necessary to return the pin 14 to its first stable position illustrated in Figures 4 and 5.

A cet effet, depuis la position intermédiaire illustrée à la figure 7, le corps de rotor 12 est ramené vers l'arrière jusqu'à une position neutre illustrée à la figure 11.For this purpose, from the intermediate position illustrated in Figure 7, the rotor body 12 is brought back to a neutral position illustrated in Figure 11.

Comme on peut le voir sur la figure 8, au cours de ce mouvement, la branche active 20 de l'épingle 14 parcourt le méplat 44 de l'arrière vers l'avant. Éventuellement, les forces de frottement peuvent ramener la branche active 20 légèrement vers l'arrière par pivotement de l'épingle 14 mais la branche active 20 vient alors en appui contre le décrochement 38 du bord interne 32 du logement 16 qui lui interdit dans un premier temps tout retour en arrière vers sa première position stable.As can be seen in Figure 8, during this movement, the active branch 20 of the pin 14 traverses the flat 44 from back to front. Eventually, the forces of friction can bring the active branch back 20 slightly backwards by pivoting the pin 14 but the branch active 20 then comes to bear against the offset 38 of the edge internal 32 of housing 16 which initially prohibits it everything back to its first stable position.

Etant donné le profil du méplat 44, lorsque le corps de rotor 12 est ramené vers l'arrière, la branche active 20 est repoussée radialement vers l'extérieur par le méplat 44 jusqu'à ce que, lorsque la branche active 20 est au contact de l'extrémité avant du méplat 44 par laquelle ce dernier se raccorde avec le secteur avant 42, la branche active 20 se trouve repoussée radialement vers l'extérieur au-delà de la distance qui sépare l'axe A1 de l'extrémité avant du premier tronçon 34 du bord interne 32, de sorte que, la branche 20 étant située radialement plus vers l'extérieur que le décrochement 38, ce dernier ne constitue plus un obstacle au retour de l'épingle 14 vers sa première position stable.Given the profile of the flat 44, when the body of rotor 12 is brought back, the active branch 20 is pushed radially outward through the flat 44 to what, when the active branch 20 is in contact with the front end of the flat 44 by which the latter is connects with the front sector 42, the active branch 20 is found pushed radially outward beyond the distance from axis A1 to the front end of the first section 34 of the inner edge 32, so that, the branch 20 being located radially more towards the outside than the recess 38, the latter no longer constitutes an obstacle to the return of the pin 14 to its first stable position.

Ainsi, dans une première phase illustrée à la figure 9, l'extrémité avant du méplat 44 entraíne la branche active 20 vers l'arrière jusqu'à sa position intermédiaire instable puis, à peine cette position franchie, la branche active 20 glisse le long du premier tronçon 34 pour rejoindre par effet bistable sa première position stable.Thus, in a first phase illustrated in FIG. 9, the front end of the flat 44 drives the active branch 20 backwards to its unstable intermediate position then, as soon as this position is crossed, the active branch 20 slides the along the first section 34 to reach by its bistable effect its first stable position.

Comme on peut le voir sur la figure 10, une fois que l'épingle 14 est de nouveau dans sa première position stable, il est possible de ramener le corps de rotor 12 vers sa position "stop", le secteur avant 42 n'étant pas susceptible de coopérer avec l'épingle 14 ainsi que cela a été vu précédemment et ainsi que cela est représenté sur la figure 10.As can be seen in Figure 10, once the pin 14 is again in its first stable position, it is possible to bring the rotor body 12 back to its position "stop", the front sector 42 not being capable of cooperating with pin 14 as seen previously and so as shown in Figure 10.

A titre d'exemple, la position intermédiaire du corps de rotor 10 illustrée à la figure 7 peut par exemple correspondre à une position "marche" d'un commutateur électrique d'alimentation du moteur. De même, la position neutre illustrée à la figure 11 peut par exemple correspondre à la position "accessoires" ou "stop" d'un tel commutateur.For example, the intermediate position of the body rotor 10 illustrated in Figure 7 can for example correspond to an "on" position of an electrical switch power supply. Likewise, the neutral position illustrated in figure 11 can for example correspond to the position "accessories" or "stop" of such a switch.

L'invention qui vient d'être décrite permet de réaliser des moyens d'anti-retour particulièrement fiables et économiques à mettre en oeuvre puisqu'ils ne comportent qu'une pièce spécifique, l'épingle 14 qui est une pièce très économique. Le corps de stator 10 et le corps de rotor 12 peuvent être constitués par n'importe laquelle des pièces d'un dispositif de commande de l'alimentation électrique d'un démarreur, voire par n'importe laquelle de deux pièces tournantes d'un antivol de colonne de direction de véhicule automobile.The invention which has just been described makes it possible to carry out particularly reliable and economical anti-return methods to be implemented since they comprise only one part specific, the pin 14 which is a very economical piece. The stator body 10 and rotor body 12 can be made up of any part of a control of the electrical supply of a starter, or even by any of two rotating parts of a lock motor vehicle steering column.

Claims (13)

Dispositif de commande de l'alimentation électrique d'un démarreur de véhicule automobile, du type comportant un corps de rotor (12) qui est monté à rotation autour de son axe (A1) par rapport à un corps de stator (10), du type dans lequel le corps de rotor (12) est susceptible de tourner entre une position angulaire neutre et une position angulaire de démarrage dans laquelle il provoque l'alimentation électrique d'un démarreur électrique d'un moteur thermique, en passant par une position intermédiaire, et du type comportant des moyens d'anti-retour qui, après que le corps de rotor (12) a atteint sa position intermédiaire lorsqu'il passe de sa position de démarrage vers sa position neutre, empêchent le corps de rotor (12) de retourner vers sa position de démarrage sans passer d'abord par sa position neutre,
   caractérisé en ce que les moyens d'anti-retour comportent une came (12), qui est solidaire en rotation du corps de rotor (12), et qui coopère par un bord périphérique (18) avec une épingle élastique repliée en deux branches (20, 22), en ce que l'épingle (14) est au moins partiellement reçue dans un logement (16) aménagé dans le corps de stator (10), et en ce que la came (12) comporte une première surface de butée (50) qui, lorsque le corps de rotor (12) est amené de sa position neutre à sa position de démarrage, coopère avec une branche active (20) de l'épingle (14) pour amener celle-ci d'une première position stable à une seconde position stable dans laquelle l'épingle (14) est susceptible de coopérer avec une seconde surface de butée (46) de la came pour empêcher le corps de rotor (12) d'atteindre sa position de démarrage.Device for controlling the electrical supply of a motor vehicle starter, of the type comprising a rotor body (12) which is rotatably mounted about its axis (A1) relative to a stator body (10), of the type in which the rotor body (12) is capable of rotating between a neutral angular position and an angular starting position in which it causes the electrical supply of an electric starter of a heat engine, passing through an intermediate position , and of the type comprising non-return means which, after the rotor body (12) has reached its intermediate position when it passes from its starting position to its neutral position, prevent the rotor body (12) to return to its starting position without first passing through its neutral position,
characterized in that the non-return means comprise a cam (12), which is integral in rotation with the rotor body (12), and which cooperates by a peripheral edge (18) with an elastic pin folded in two branches ( 20, 22), in that the pin (14) is at least partially received in a housing (16) arranged in the stator body (10), and in that the cam (12) has a first abutment surface (50) which, when the rotor body (12) is brought from its neutral position to its starting position, cooperates with an active branch (20) of the pin (14) to bring the latter from a first position stable at a second stable position in which the pin (14) is capable of cooperating with a second abutment surface (46) of the cam to prevent the rotor body (12) from reaching its starting position. Dispositif selon la revendication 1, caractérisé en ce que l'épingle (14) est engagée axialement dans le logement (16) de telle sorte que ses deux branches (20, 22) sont rapprochées l'une de l'autre par compression élastique selon une direction sensiblement radiale, et en ce que l'épingle (14) est susceptible d'occuper dans le logement (16) ses deux positions stables qui sont séparées par une position instable de compression maximale des branches (20, 22) de l'épingle (14).Device according to claim 1, characterized in that the pin (14) is engaged axially in the housing (16) so that its two branches (20, 22) are brought together by elastic compression according to a substantially radial direction, and in that the pin (14) is likely to occupy in the housing (16) its two positions stable which are separated by an unstable position of maximum compression of the branches (20, 22) of the pin (14). Dispositif selon la revendication 2, caractérisé en ce que dans sa deuxième position stable, la branche active de l'épingle (14) est agencée radialement plus vers l'intérieur par rapport à l'axe (A1) de rotation du corps de rotor (12) que dans sa première position stable. Device according to claim 2, characterized in that in its second stable position, the active branch of the pin (14) is arranged radially more inwards by relative to the axis (A1) of rotation of the rotor body (12) than in his first stable position. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que, lorsque l'épingle (14) passe de l'une à l'autre de ses positions d'équilibre stable, la branche active (20) de l'épingle (14) se déplace en regard d'un bord interne (32) du logement (16) qui comporte deux tronçons (34, 36) séparés par un décrochement (38) tourné vers l'avant.Device according to any one of the claims previous, characterized in that when the pin (14) passes from one to the other of its positions of stable equilibrium, the active branch (20) of the pin (14) moves opposite a internal edge (32) of the housing (16) which has two sections (34, 36) separated by a recess (38) facing the front. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le logement (16) est délimité par deux bords latéraux (24, 26) qui forment un V ouvert en direction de l'axe (A1) de rotation du corps de rotor (12) et en ce que, dans chacune de ses positions stables, la branche active (20) de l'épingle (14) est en appui selon une direction tangentielle contre l'un des bords latéraux (24, 26).Device according to any one of the claims previous, characterized in that the housing (16) is delimited by two lateral edges (24, 26) which form a V open in direction of the axis (A1) of rotation of the rotor body (12) and in what, in each of its stable positions, the active branch (20) of the pin (14) is supported in a direction tangential against one of the side edges (24, 26). Dispositif selon la revendication 5, caractérisé en ce que, entre ses deux positions stables, l'épingle (14) pivote autour de l'un de ses deux bras (22) qui est reçu en appui radialement vers l'extérieur au sommet (30) du V formé par les bords latéraux (14, 26) du logement (16)Device according to claim 5, characterized in that, between its two stable positions, the pin (14) pivots around one of its two arms (22) which is received in support radially outwards at the top (30) of the V formed by the lateral edges (14, 26) of the housing (16) Dispositif selon la revendication 6, caractérisé en ce que les deux positions stables de l'épingle (14) sont sensiblement symétriques par rapport à un rayon passant par l'axe (A1) de rotation du corps de rotor (12) et par le sommet (30) du V formé par les bords latéraux (24, 26) du logement (16).Device according to claim 6, characterized in what the two stable positions of the pin (14) are substantially symmetrical with respect to a radius passing through the axis (A1) of rotation of the rotor body (12) and from the top (30) of the V formed by the lateral edges (24, 26) of the housing (16). Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la seconde surface de butée (46) de la came (12) est agencée en avant de la première surface de butée (50) le long du bord périphérique (18) de la came (12) dans le sens de rotation du corps de rotor (12) de sa position neutre à sa position de démarrage.Device according to any one of the claims previous, characterized in that the second abutment surface (46) of the cam (12) is arranged in front of the first surface stop (50) along the peripheral edge (18) of the cam (12) in the direction of rotation of the rotor body (12) from its position neutral at its start position. Dispositif selon la revendication 8, caractérisé en ce que les deux surfaces de butée (46, 50) de la came (12) sont formées chacune par un décrochement radial tourné vers l'avant aménagé dans le bord périphérique (18) de la came (12)Device according to claim 8, characterized in that the two abutment surfaces (46, 50) of the cam (12) are each formed by a forward-facing radial offset fitted in the peripheral edge (18) of the cam (12) Dispositif selon la revendication 9, caractérisé en ce que les deux décrochements (46, 50) délimitent un secteur (48) du bord périphérique (18) qui est contenu radialement à l'intérieur d'un arc de cercle centré sur l'axe (A1) de rotation du corps de rotor (12) et dont le rayon est inférieur à la distance entre la branche active de l'épingle (14) et l'axe de rotation (A1) du corps de rotor (12) lorsque l'épingle (14) est dans sa première position stable.Device according to claim 9, characterized in what the two recesses (46, 50) delimit a sector (48) of the peripheral edge (18) which is contained radially at inside an arc centered on the axis (A1) of rotation of the rotor body (12) and whose radius is less than the distance between the active branch of the pin (14) and the axis of rotation (A1) of the rotor body (12) when the pin (14) is in its first stable position. Dispositif selon l'une des revendications 9 ou 10, caractérisé en ce que, en avant de la seconde surface de butée (46) de la came (12), le bord périphérique présente un secteur de rampe (44) qui est tourné vers l'arrière de manière à ramener l'épingle (14) depuis sa seconde position, radialement vers l'extérieur et angulairement vers sa première position stable lorsque le corps de rotor (12) est ramené depuis sa position intermédiaire en direction de sa position neutre.Device according to one of claims 9 or 10, characterized in that, in front of the second abutment surface (46) of the cam (12), the peripheral edge has a sector ramp (44) which is turned rearwards so as to bring back the pin (14) from its second position, radially towards outside and angularly towards its first stable position when the rotor body (12) is returned from its position intermediate towards its neutral position. Dispositif selon la revendication 11 prise en combinaison avec la revendication 2, caractérisé en ce que, en avant du secteur de rampe (44), le bord périphérique (18) de la came (12) présente un secteur en arc de cercle centré sur l'axe de rotation (A1) du corps de rotor (12) et dont le diamètre est supérieur à la distance entre la branche active (20) de l'épingle (14) et l'axe (A1) de rotation du corps de rotor (12) lorsque l'épingle (14) est dans sa position instable de compression maximale, mais inférieur à la distance entre la branche active de l'épingle (14) et l'axe (A1) de rotation du corps de rotor (12) lorsque l'épingle est dans sa première position stable.Device according to claim 11 taken into account combination with claim 2, characterized in that, in front of the ramp sector (44), the peripheral edge (18) of the cam (12) has a sector in an arc centered on the axis of rotation (A1) of the rotor body (12) and whose diameter is greater than the distance between the active branch (20) of the pin (14) and the axis (A1) of rotation of the rotor body (12) when the pin (14) is in its unstable position of maximum compression but less than the distance between the active branch of the pin (14) and the axis (A1) of rotation of the rotor body (12) when the pin is in its first stable position. Antivol de véhicule automobile, caractérisé en ce qu'il comporte un dispositif selon l'une quelconque des revendications précédentes.Motor vehicle anti-theft device, characterized in that it includes a device according to any one of previous claims.
EP19980120179 1997-10-31 1998-10-29 Power control device for a starter of an automotive vehicle and antitheft device having such a device Expired - Lifetime EP0913576B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9713821 1997-10-31
FR9713821A FR2770587B1 (en) 1997-10-31 1997-10-31 DEVICE FOR CONTROLLING THE POWER SUPPLY OF A MOTOR VEHICLE STARTER AND AN ANTI-THEFT DEVICE PROVIDED WITH SUCH A DEVICE

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EP0913576A1 true EP0913576A1 (en) 1999-05-06
EP0913576B1 EP0913576B1 (en) 2009-09-16

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EP19980120179 Expired - Lifetime EP0913576B1 (en) 1997-10-31 1998-10-29 Power control device for a starter of an automotive vehicle and antitheft device having such a device

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DE (1) DE69841154D1 (en)
FR (1) FR2770587B1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2127164A5 (en) * 1971-02-26 1972-10-13 Neiman Exploitation Brevets
FR2278939A1 (en) * 1974-07-15 1976-02-13 Magneti Marelli Spa Starting repeat lock for ignition switch of combustion engine - for installation in conventional lock with face cam, optionally containing theft lock

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2127164A5 (en) * 1971-02-26 1972-10-13 Neiman Exploitation Brevets
FR2278939A1 (en) * 1974-07-15 1976-02-13 Magneti Marelli Spa Starting repeat lock for ignition switch of combustion engine - for installation in conventional lock with face cam, optionally containing theft lock

Also Published As

Publication number Publication date
EP0913576B1 (en) 2009-09-16
DE69841154D1 (en) 2009-10-29
FR2770587B1 (en) 1999-12-03
FR2770587A1 (en) 1999-05-07

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