EP3140843B1 - Contact device of a starter contactor - Google Patents

Contact device of a starter contactor Download PDF

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Publication number
EP3140843B1
EP3140843B1 EP15725775.9A EP15725775A EP3140843B1 EP 3140843 B1 EP3140843 B1 EP 3140843B1 EP 15725775 A EP15725775 A EP 15725775A EP 3140843 B1 EP3140843 B1 EP 3140843B1
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EP
European Patent Office
Prior art keywords
contact
spring
rod
contactor
contact plate
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.)
Active
Application number
EP15725775.9A
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German (de)
French (fr)
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EP3140843A1 (en
Inventor
Romain GUIGNOT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Equipements Electriques Moteur SAS
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Valeo Equipements Electriques Moteur SAS
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Publication of EP3140843A1 publication Critical patent/EP3140843A1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles

Definitions

  • the present invention relates to the field of starters for heat engines, in particular for motor vehicles, and more specifically to contactors for starters which supply power to the electric motor driving the starter pinion.
  • the contactors of the starters of the state of the art have two roles, on the one hand to move the starter supporting the pinion by means of a fork so as to allow the gear of the pinion to the crown of the heat engine to be started and on the other hand, supplying the electric motor of the starter making it possible to drive the pinion in rotation.
  • the contactors include a set of coils making it possible to move the movable part of a magnetic core, the movable part of the magnetic core causing both the displacement of the fork and the displacement of a contact device comprising a contact plate. contact intended to establish electrical contact between power supply terminals of the electric motor.
  • springs called the crushing spring and return spring are placed on either side of the plate so as to force the plate against the terminals when the coils are activated and move the plate towards the terminals and to facilitate the return of the plate to its initial position when the coils are no longer supplied
  • FR2957711 A1 discloses a starter contactor of the technical state according to the preamble of claim 1.
  • the presence of one or more rebounds of the wafer on the terminals may occur when the coils are energized. This (these) rebound (s) cause (s) a bad contact and disturb (s) the operation of the starter.
  • contact devices of the state of the art generally include a large number of parts, which results in complex assembly.
  • the aim of the invention is therefore to provide an inexpensive solution having a simple mounting of the contact device making it possible to reduce the appearance of rebounds when the coils are supplied and when the wafer is moved towards the terminals.
  • the contact device must be reliable to allow the various elements to be held in position even after a large number of starts.
  • the contact rod is made of an electrically insulating material.
  • the contact rod is made of a polymer material.
  • the force of the return spring on the contact rod in the active position is between twenty-five and forty Newtons.
  • the crush spring is in contact with the contact plate.
  • the crushing spring comprises at least one coil at the end of the spring, this coil comprising a portion of flat surface perpendicular to the axis of revolution of the spring in contact with the contact plate.
  • the retaining collar is integral with the contact rod.
  • the crushing spring is held by a closing clip able to be positioned against a radial closing surface of the contact rod.
  • the number of turns of the crushing spring is greater than two.
  • the crushing spring in the rest position of the contact rod, is prestressed and applies a force of 45 Newtons + or - 10% on the contact plate.
  • the present invention also relates to a starter comprising a contactor.
  • the figures 1A and 1B show a diagram of a starter contactor 1 comprising a cover 3 enclosing a set of coils 5.
  • the set of coils 5 defines at its center a tubular chamber 7 in which is disposed a magnetic core 9.
  • the magnetic core 9 comprises a part fixed 9a and a movable part 9b which can move in translation, under the effect of the set of coils 5, between a rest position shown in figure 1 and an active position in which the movable part 9b comes into contact with the fixed part 9a of the magnetic core 9.
  • a helical spring 11 promotes the return to the rest position in the absence of supply to the set of coils 5.
  • the set of coils 5 comprises a take-up coil 5a and a contact coil 5b, the two coils 5a and 5b being supplied to move the movable part 9b of the magnetic core 9 from its rest position to its active position and then the maintenance in the active position of the moving part 9b is provided by the single contact coil 5b so as to limit the consumption of the set of coils 5.
  • the movable part 9b of the magnetic core 9 is connected to a fork 13 (shown partially) which drives the movement of a pinion launcher (not shown) from the starter towards the ring gear (not shown) of the heat engine to be started when the movable part 9b of the magnetic core 9 moves to its active position.
  • the movement of the movable part 9b of the magnetic core 9 in the active position causes the movement in translation with respect to the cover 3 of a contact rod 17 of a contact device 15 between a rest position shown in FIG. figure 1 and an active position.
  • the contact device 15 comprises a contact rod 17 provided with a retaining collar 17a integral in translation with the contact rod 17 and a contact plate 19 mounted on the contact rod 17.
  • the passage into the active position of the rod contact 17 causes contacting of the contact plate 19 with at least one electrical terminal.
  • the contact plate 19 comes into contact with two electrical terminals 21 and 23 to supply the electric motor (not shown) driving the rotation of the pinion.
  • the contact plate 19 is movable relative to the contact rod 17 between an initial position in which the contact rod 17 is in a rest position and a final position in which the contact rod 17 is in the active position. . In the initial position, the contact plate 19 is in contact with the retaining collar 17a and in the final position, a clearance is formed between the retaining collar 17a and the contact plate 19 due to the contact with the electrical terminals 21 and 23 .
  • the contact device 15 also comprises a crushing spring 25 mounted on the contact rod 17 which is positioned around a portion of the contact rod 17 and intended to compress when the contact plate 19 comes into contact with it. the electrical terminals 21 and 23 and a return spring 27 intended to facilitate the return of the contact device 15 to the rest position when the coils 5a and 5b are no longer supplied.
  • the figure 2 shows an exploded view of a contact device 15 according to the invention.
  • the contact device comprises a contact rod 17 made of an electrically insulating material, for example of a polymer material.
  • the contact rod 17 comprises a first radial surface forming a retaining collar 17a of a first diameter and a second radial surface forming a closing collar 17b of a second diameter smaller than the first diameter.
  • the retaining 17a and closing 17b flanges are integral with the contact rod 17, that is to say made from material with the contact rod 17.
  • the contact plate 19 is made of a conductive material, for example copper. , and comprises a central circular hole 19a, the diameter of which is greater than the diameter of the closing flange 17b and less than the diameter of the retaining flange 17a.
  • the contact plate is mounted on the contact rod 17 by inserting the contact rod 17 into the hole 19a of the contact plate 19 as indicated by the arrow 29.
  • the contact plate 19 then comes into contact with the collar. retaining 17a on a first side of the retaining collar 17a.
  • the width of the plate is substantially equal to the diameter of the retaining collar 17a so that the retaining collar 17a substantially covers the width of the contact plate 19 which contributes to the stability of the contact plate 19.
  • the spring d The crush 25 whose diameter is greater than the diameter of the hole 19a of the contact plate 19 is positioned around the contact rod 17 and comes into contact with the contact plate 17 as indicated by the arrow 31.
  • the crushing spring 25 comprises at least one turn at its end, a portion of which comprises a flat surface perpendicular to the axis of revolution of the crushing spring 25.
  • This flat surface is for example obtained by grinding at the end. of the spring in contact with the contact plate 17 so as to obtain a flat surface at the end of the crush spring 25 and increase the contact area between the crush spring 25 and the contact plate 17 and thus improve the stability of the contact plate 17 in particular during the passage into the active position of the contact rod 17.
  • the contact device 15 also comprises a closing clip 33, the radial width of which is greater than or equal to the diameter of the crushing spring 25 and in which a radial notch 33a is formed, the width of which is less than the diameter of the closing flange 17b and which is intended to receive a portion of the contact rod 17.
  • the closing clip 33 is positioned around the contact rod 17 against the radial surface formed by the closing flange 17b, as shown by the arrow 35.
  • the closing clip therefore comes between the crushing spring 25 and the flange. closure 17b so as to hold the crushing spring 25 and the contact plate 19 in position on the contact rod 17.
  • the closing clip 33 is therefore mounted on the contact rod 17 after the contact plate 19 and the crushing spring 25, the assembly of the closing clip 33 necessitating the compression of the crushing spring 25 in order to be mounted on the rod. contact 17.
  • the closing clip 33 then applies a preload on the crushing spring 25 which then applies a force on the contact plate 19 in the direction of the retaining flange 17a, which helps to keep the contact plate 19 as much as possible. on the retaining collar 17a.
  • the crushing spring 25 may also comprise a coil comprising a flat portion perpendicular to the axis of revolution of the crushing spring 25 at its second end in contact with the closing clip 33 so as to increase the contact surface between the crushing spring 25 and the closing clip 33.
  • the return spring 27 is positioned on the contact rod resting on a second side of the retaining collar opposite the first side as indicated by arrow 37.
  • the internal diameter of the return spring 27 is slightly less than or substantially equal to the first side. diameter of the end of the contact rod 17 intended to receive the return spring 27 so that the friction between the return spring 27 and the contact rod 17 allow the return spring 27 to be held in position on the return rod contact 17, in particular before it is mounted in contactor 1.
  • the return spring 27 may comprise, at least at one of its ends, a coil comprising a flat portion perpendicular to the axis of revolution of the return spring 27 so as to obtain a end with a flat surface and maximize the contact surface with the retaining collar 17a on one side and the cover 3 of the contactor 1 on the other.
  • closure clip will now be described in more detail from the figures 3a, 3b, 3c, 3d , 4a, 4b, 4c, 4d and 5 .
  • the latter comprises a peripheral centering edge 33b on its face intended to come into contact with the closure flange 17b as shown in the figures.
  • figure 3a, 3b, 3c, 3d the peripheral centering edge 33b having a diameter slightly greater than the diameter of the closure flange 17b so as to be positioned around the latter while leaving a minimum clearance between the two.
  • the closure clip 33 therefore at least partially surrounds the closure collar 17b.
  • the closing clip 33 comprises a second peripheral centering edge 33c on its second face intended to be in contact with the crushing spring 25, the second peripheral centering edge 33c having a diameter slightly greater than the diameter of the crushing spring 25 so as to come to surround at least partially the end of the crushing spring 25 while limiting the play between the latter and the closing clip 33.
  • This second peripheral centering edge 33c makes it possible to keep the crushing spring 25 in a position centered around the contact rod 17.
  • the two peripheral centering edges 33b and 33c can be different, for example in the case where the diameter of the crushing spring 25 and of the closing flange 17b are different but can also be identical in the case where the diameter of the crushing spring 25 and of the closing flange 17b are substantially identical so as to facilitate the manufacture of the clip of f closure 33 and reduce manufacturing costs.
  • the figure 5 shows a section of the device, the closure clip 33 of which is according to the embodiment of the figure 4a to 4D , in the state mounted on the contact rod 17.
  • the first peripheral centering edge 33b is positioned around the closing flange 17b and the second peripheral centering edge 33c is positioned in the center of the crushing spring 25 allowing thus maintaining and centering the crushing spring 25 around the contact rod 17.
  • the crushing springs 25 and return springs 27 are generally metallic helical springs, for example made of steel.
  • the stiffness of the squeeze spring 25 is greater than the stiffness of the return spring 27.
  • the squeeze spring 25 is compressed between the contact pad 19 and the closure clip 33 so that 'in the rest state of the contact device 15, a preload between 40 and 50 Newtons is applied to the crushing spring 25.
  • the figure 6 shows a figure of the contact device 15 in the assembled state. This contact device 15 has only five parts: the contact rod 17, the return spring 27, the contact plate 19, the crushing spring 25 and the closing clip 33. This small number of parts makes it possible to reduce the load. cost of the device and make assembly simpler and faster, which also makes it possible to reduce assembly costs.
  • the power supply to the set of coils 5 therefore causes the contact rod to move into the active position, which causes the contact plate to come into contact with the electrical terminals 21 and 23.
  • the crushing spring 25 applies a force on the contact plate 19 at least 20 Newtons greater than the force exerted by the return spring spring 27 on the contact rod 17 due to the difference in stiffness between the crushing spring 25 and the return spring 27.
  • the force exerted by the return spring 27 on the contact rod 17 is within a range of 25 to 40 Newtons.
  • the force exerted by the crushing spring 25 on the contact plate 19 is for example 51 Newtons while the force exerted by the return spring 27 on the contact rod 17 is 28 Newtons.
  • This greater force of the crushing spring 25 relative to the return spring 27 makes it possible to limit the play formed between the contact plate 19 and the retaining collar 17a in the final position of the contact plate 19, that is to say. ie at the time of contact with the electrical terminals 21 and 23.
  • the rebound undergone by the contact plate 19 is therefore reduced when the contact rod 17 goes into the active position so that the power supply to the electric motor is carried out without qu 'there are false contacts.
  • the coils 5a and 5b of the set of coils 5 are no longer supplied.
  • the return spring 27 makes it possible to disconnect the contact plate 19 of the electrical terminals 21 and 25 so as to allow the return of the contact rod 17 in the rest position.
  • a crushing spring 25 having a large diameter, a large number of turns, a turn comprising a flat portion perpendicular to its axis of revolution at the level of at least one of its ends and of which the stiffness is greater than the stiffness of the return spring 27 makes it possible to obtain a more stable contact device when passing from the rest position to the active position when the contact plate 19 comes into contact with the electrical terminals 21 and 23 which makes it possible to greatly reduce or even eliminate the rebound effect due to the docking of the contact plate 19 on the electrical terminals 21 and 23 or due to the balancing of the crushing spring 25 after this docking.
  • the contact device 15 according to the present invention therefore makes it possible, by virtue of its structure and its reduced number of parts, to obtain a contact device 15 that is reliable over time, having a reduced production cost and reducing or eliminating the effect of rebound when switch 1 is activated.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Push-Button Switches (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Description

La présente invention concerne le domaine des démarreurs pour moteur thermique, notamment de véhicule automobile, et plus précisément les contacteurs des démarreurs qui permettent l'alimentation du moteur électrique entraînant le pignon du démarreur.The present invention relates to the field of starters for heat engines, in particular for motor vehicles, and more specifically to contactors for starters which supply power to the electric motor driving the starter pinion.

Les contacteurs des démarreurs de l'état de la technique ont deux rôles, d'une part déplacer le lanceur supportant le pignon par le biais d'une fourchette de manière à permettre l'engrenage du pignon sur la couronne du moteur thermique à démarrer et d'autre part alimenter le moteur électrique du démarreur permettant d'entraîner le pignon en rotation. Pour cela, les contacteurs comprennent un jeu de bobines permettant de déplacer la partie mobile d'un noyau magnétique, la partie mobile du noyau magnétique entraînant à la fois le déplacement de la fourchette et le déplacement d'un dispositif de contact comprenant une plaquette de contact destinée à établir un contact électrique entre des bornes d'alimentation du moteur électrique.The contactors of the starters of the state of the art have two roles, on the one hand to move the starter supporting the pinion by means of a fork so as to allow the gear of the pinion to the crown of the heat engine to be started and on the other hand, supplying the electric motor of the starter making it possible to drive the pinion in rotation. For this, the contactors include a set of coils making it possible to move the movable part of a magnetic core, the movable part of the magnetic core causing both the displacement of the fork and the displacement of a contact device comprising a contact plate. contact intended to establish electrical contact between power supply terminals of the electric motor.

Par ailleurs, des ressorts dits ressort d'écrasement et ressort de rappel sont placés de part et d'autre de la plaquette de manière à contraindre la plaquette contre les bornes lorsque les bobines sont activées et déplacent la plaquette vers les bornes et pour faciliter le retour de la plaquette en position initiale lorsque les bobines ne sont plus alimentéesFurthermore, springs called the crushing spring and return spring are placed on either side of the plate so as to force the plate against the terminals when the coils are activated and move the plate towards the terminals and to facilitate the return of the plate to its initial position when the coils are no longer supplied

FR2957711 A1 divulgue un contacteur démarreur de l'état technique selon le préambule de la revendication 1. FR2957711 A1 discloses a starter contactor of the technical state according to the preamble of claim 1.

Cependant, avec les systèmes de l'état de la technique, il peut survenir la présence d'un ou plusieurs rebonds de la plaquette sur les bornes lorsque les bobines sont alimentées. Ce(s) rebond(s) provoque(nt) un mauvais contact et perturbe(nt) le fonctionnement du démarreur.However, with the systems of the state of the art, the presence of one or more rebounds of the wafer on the terminals may occur when the coils are energized. This (these) rebound (s) cause (s) a bad contact and disturb (s) the operation of the starter.

De plus, les dispositifs de contact de l'état de la technique comprennent généralement un nombre important de pièces ce qui entraîne un montage complexe.In addition, the contact devices of the state of the art generally include a large number of parts, which results in complex assembly.

Le but de l'invention est donc de fournir une solution peu coûteuse et présentant un montage simple du dispositif de contact permettant de réduire l'apparition de rebonds lorsque les bobines sont alimentées et que la plaquette est déplacée vers les bornes. De plus, le dispositif de contact doit être fiable pour permettre de maintenir les différents éléments en position même après un grand nombre de démarrages.The aim of the invention is therefore to provide an inexpensive solution having a simple mounting of the contact device making it possible to reduce the appearance of rebounds when the coils are supplied and when the wafer is moved towards the terminals. In addition, the contact device must be reliable to allow the various elements to be held in position even after a large number of starts.

A cet effet, la présente invention a pour objet un contacteur de démarreur comprenant :

  • un capot,
  • une tige de contact mobile par rapport au capot entre une position de repos et une position active,
  • une collerette de maintien solidaire en translation de la tige de contact,
  • une plaquette de contact en matériau conducteur électriquement montée sur la tige de contact, la plaquette de contact étant mobile par rapport à la tige de contact entre une position initiale dans laquelle la tige de contact est en position de repos et une position finale dans laquelle la tige de contact est en position active, la plaquette de contact étant en contact avec la collerette de maintien en position initiale et un jeu étant formé entre la collerette de maintien et la plaquette de contact en position finale,
  • au moins une borne électrique, ladite, au moins une, borne électrique étant en contact avec la plaquette de contact dans sa position finale,
  • un ressort d'écrasement destiné à être monté autour et sur la tige de contact d'un premier côté de la plaquette de contact, le ressort d'écrasement développant un effort d'écrasement de la plaquette de contact sur la, au moins une, borne en position finale,
  • un ressort de rappel destiné à être monté sur la tige de contact d'un deuxième côté de la plaquette de contact opposé au premier côté de la plaquette de contact , le ressort de rappel développant un effort de rappel sur la tige de contact de la position active vers la position de repos permettant de déconnecter la plaquette de contact de la, au moins une, borne électrique,
    caractérisé en ce que l'effort du ressort d'écrasement sur la plaquette de contact en position finale est supérieur d'au moins vingt Newtons à l'effort du ressort de rappel sur la tige de contact en position active.
To this end, the present invention relates to a starter contactor comprising:
  • a cap,
  • a contact rod movable relative to the cover between a rest position and an active position,
  • a retaining collar integral in translation with the contact rod,
  • a contact plate of electrically conductive material mounted on the contact rod, the contact plate being movable relative to the contact rod between an initial position in which the contact rod is in the rest position and a final position in which the contact rod is in the active position, the contact plate being in contact with the retaining flange in the initial position and a clearance being formed between the retaining flange and the contact pad in the final position,
  • at least one electrical terminal, said at least one electrical terminal being in contact with the contact plate in its final position,
  • a crushing spring intended to be mounted around and on the contact rod on a first side of the contact pad, the crushing spring developing a crushing force of the contact pad on the, at least one, bollard in end position,
  • a return spring intended to be mounted on the contact rod on a second side of the contact plate opposite to the first side of the contact plate, the return spring developing a return force on the contact rod of the position active towards the rest position allowing the contact plate to be disconnected from the at least one electrical terminal,
    characterized in that the force of the crushing spring on the contact plate in the final position is at least twenty Newtons greater than the force of the return spring on the contact rod in the active position.

Selon un autre aspect de la présente invention, la tige de contact est réalisé en matériau isolant électriquement.According to another aspect of the present invention, the contact rod is made of an electrically insulating material.

Selon un aspect supplémentaire de la présente invention, la tige de contact est réalisée en matériau polymère.According to a further aspect of the present invention, the contact rod is made of a polymer material.

Selon un aspect supplémentaire de la présente invention, l'effort du ressort de rappel sur la tige de contact dans la position active est compris entre vingt-cinq et quarante Newtons.According to a further aspect of the present invention, the force of the return spring on the contact rod in the active position is between twenty-five and forty Newtons.

Selon un aspect additionnel de la présente invention, le ressort d'écrasement est en contact avec la plaquette de contact.According to an additional aspect of the present invention, the crush spring is in contact with the contact plate.

Selon un autre aspect de la présente invention,le ressort d'écrasement comporte au moins une spire à l'extrémité du ressort, cette spire comportant une portion de surface plane perpendiculaire à l'axe de révolution du ressort en contact avec la plaquette de contact.According to another aspect of the present invention, the crushing spring comprises at least one coil at the end of the spring, this coil comprising a portion of flat surface perpendicular to the axis of revolution of the spring in contact with the contact plate. .

Selon un aspect supplémentaire de la présente invention, la collerette de maintien est monobloc avec la tige de contact.According to a further aspect of the present invention, the retaining collar is integral with the contact rod.

Selon un aspect additionnel de la présente invention, le ressort d'écrasement est maintenu par un clip de fermeture apte à être positionné contre une surface radiale de fermeture de la tige de contact.According to an additional aspect of the present invention, the crushing spring is held by a closing clip able to be positioned against a radial closing surface of the contact rod.

Selon un autre aspect de la présente invention, le nombre de spires du ressort d'écrasement est supérieur à deux.According to another aspect of the present invention, the number of turns of the crushing spring is greater than two.

Selon un aspect supplémentaire de la présente invention, en position de repos de la tige de contact, le ressort d'écrasement est précontraint et applique un effort de 45 Newtons + ou - 10% sur la plaquette de contact.According to a further aspect of the present invention, in the rest position of the contact rod, the crushing spring is prestressed and applies a force of 45 Newtons + or - 10% on the contact plate.

La présente invention concerne également un démarreur comprenant un contacteur.The present invention also relates to a starter comprising a contactor.

D'autres caractéristiques et avantages de l'invention apparaîtront dans la description qui va maintenant en être faite, en référence aux dessins annexés qui en représentent, à titre indicatif mais non limitatif, des modes de réalisation possibles.Other characteristics and advantages of the invention will appear in the description which will now be given, with reference to the appended drawings which represent, by way of indication but not limiting, possible embodiments thereof.

Sur ces dessins:

  • la figure 1A représente une vue en coupe axiale d'un contacteur de démarreur selon un mode de réalisation de l'invention;
  • la figure 1B représente une vue en coupe axiale d'un contacteur de démarreur selon un autre mode de réalisation de l'invention,
  • la figure 2 représente une vue éclatée d'un dispositif de contact selon la présente invention;
  • les figures 3a, 3b, 3c, 3d représentent un schéma d'un clip de fermeture selon un premier mode de réalisation de la présente invention;
  • les figures 4a, 4b, 4c et 4d représentent des schémas d'un clip de fermeture selon un deuxième mode de réalisation de la présente invention;
  • la figure 5 représente une coupe du dispositif de contact selon l'invention à l'état monté ;
  • la figure 6 représente une figure d'un dispositif de contact selon l'invention à l'état monté ;
On these drawings:
  • the figure 1A shows an axial sectional view of a starter contactor according to a mode of realization of the invention;
  • the figure 1B shows an axial sectional view of a starter contactor according to another embodiment of the invention,
  • the figure 2 shows an exploded view of a contact device according to the present invention;
  • the figures 3a, 3b, 3c, 3d represent a diagram of a closure clip according to a first embodiment of the present invention;
  • the figures 4a, 4b, 4c and 4d represent diagrams of a closure clip according to a second embodiment of the present invention;
  • the figure 5 shows a section of the contact device according to the invention in the mounted state;
  • the figure 6 shows a figure of a contact device according to the invention in the mounted state;

Sur ces figures, les mêmes numéros de référence désignent des éléments identiques.In these figures, the same reference numbers designate identical elements.

Contacteur 1Contactor 1

Les figures 1A et 1B montrent un schéma d'un contacteur 1 de démarreur comprenant un capot 3 renfermant un jeu de bobines 5. Le jeu de bobines 5 définit en son centre une chambre tubulaire 7 dans laquelle est disposé un noyau magnétique 9. Le noyau magnétique 9 comprend une partie fixe 9a et une partie mobile 9b qui peut se déplacer en translation, sous l'effet du jeu de bobines 5, entre une position de repos représenté sur la figure 1 et une position active dans laquelle la partie mobile 9b vient en contact avec la partie fixe 9a du noyau magnétique 9. Un ressort hélicoïdal 11 favorise le retour en position de repos en l'absence d'alimentation du jeu de bobines 5. Le jeu de bobines 5 comprend une bobine d'appel 5a et une bobine de contact 5b, les deux bobines 5a et 5b étant alimentées pour déplacer la partie mobile 9b du noyau magnétique 9 de sa position de repos à sa position active puis le maintien en position active de la partie mobile 9b est assuré par la seule bobine de contact 5b de manière à limiter la consommation du jeu de bobines 5.The figures 1A and 1B show a diagram of a starter contactor 1 comprising a cover 3 enclosing a set of coils 5. The set of coils 5 defines at its center a tubular chamber 7 in which is disposed a magnetic core 9. The magnetic core 9 comprises a part fixed 9a and a movable part 9b which can move in translation, under the effect of the set of coils 5, between a rest position shown in figure 1 and an active position in which the movable part 9b comes into contact with the fixed part 9a of the magnetic core 9. A helical spring 11 promotes the return to the rest position in the absence of supply to the set of coils 5. The set of coils 5 comprises a take-up coil 5a and a contact coil 5b, the two coils 5a and 5b being supplied to move the movable part 9b of the magnetic core 9 from its rest position to its active position and then the maintenance in the active position of the moving part 9b is provided by the single contact coil 5b so as to limit the consumption of the set of coils 5.

La partie mobile 9b du noyau magnétique 9 est reliée à une fourchette 13 (représentée partiellement) qui entraîne le déplacement d'un lanceur de pignon (non représenté) du démarreur vers la couronne (non représentée) du moteur thermique à démarrer lorsque la partie mobile 9b du noyau magnétique 9 se déplace vers sa position active.The movable part 9b of the magnetic core 9 is connected to a fork 13 (shown partially) which drives the movement of a pinion launcher (not shown) from the starter towards the ring gear (not shown) of the heat engine to be started when the movable part 9b of the magnetic core 9 moves to its active position.

De plus, le déplacement de la partie mobile 9b du noyau magnétique 9 en position active entraîne le déplacement en translation par rapport au capot 3 d'une tige de contact 17 d'un dispositif de contact 15 entre une position de repos représentée sur la figure 1 et une position active. Le dispositif de contact 15 comprend une tige de contact 17 munie d'une collerette de maintien 17a solidaire en translation de la tige de contact 17 et une plaquette de contact 19 montée sur la tige de contact 17. Le passage en position active de la tige de contact 17 provoque la mise en contact de la plaquette de contact 19 avec au moins une borne électrique. Dans le cas présent, la plaquette de contact 19 vient en contact avec deux bornes électriques 21 et 23 pour alimenter le moteur électrique (non représenté) entraînant la rotation du pignon. De plus, la plaquette de contact 19 est mobile par rapport à la tige de contact 17 entre une position initiale dans laquelle la tige de contact 17 est dans une position de repos et une position finale dans laquelle la tige de contact 17 est en position active. En position initiale, la plaquette de contact 19 est en contact avec la collerette de maintien 17a et en position finale, un jeu est formé entre la collerette de maintien 17a et la plaquette de contact 19 du fait du contact avec les bornes électriques 21 et 23.In addition, the movement of the movable part 9b of the magnetic core 9 in the active position causes the movement in translation with respect to the cover 3 of a contact rod 17 of a contact device 15 between a rest position shown in FIG. figure 1 and an active position. The contact device 15 comprises a contact rod 17 provided with a retaining collar 17a integral in translation with the contact rod 17 and a contact plate 19 mounted on the contact rod 17. The passage into the active position of the rod contact 17 causes contacting of the contact plate 19 with at least one electrical terminal. In the present case, the contact plate 19 comes into contact with two electrical terminals 21 and 23 to supply the electric motor (not shown) driving the rotation of the pinion. In addition, the contact plate 19 is movable relative to the contact rod 17 between an initial position in which the contact rod 17 is in a rest position and a final position in which the contact rod 17 is in the active position. . In the initial position, the contact plate 19 is in contact with the retaining collar 17a and in the final position, a clearance is formed between the retaining collar 17a and the contact plate 19 due to the contact with the electrical terminals 21 and 23 .

Le dispositif de contact 15 comprend également un ressort d'écrasement 25 monté sur la tige de contact 17 qui vient se positionner autour d'une portion de la tige de contact 17 et destiné à se comprimer lorsque la plaquette de contact 19 rentre en contact avec les bornes électriques 21 et 23 et un ressort de rappel 27 destiné à faciliter le retour du dispositif de contact 15 en position de repos lorsque les bobines 5a et 5b ne sont plus alimentées.The contact device 15 also comprises a crushing spring 25 mounted on the contact rod 17 which is positioned around a portion of the contact rod 17 and intended to compress when the contact plate 19 comes into contact with it. the electrical terminals 21 and 23 and a return spring 27 intended to facilitate the return of the contact device 15 to the rest position when the coils 5a and 5b are no longer supplied.

Dans le mode de réalisation de la figure lA, en position repos la plaquette est en contact avec le noyau fixe.In the embodiment of FIG. 1A, in the rest position the wafer is in contact with the fixed core.

Dans le mode de réalisation de la figure lB, en position repos la plaquette n'est pas en contact avec le noyau fixe mais c'est la butée 17B qui est en contact avec le noyau fixe. Cela permet d'éviter que la plaquette se déforme lorsque le ressort 25 visible sur la figure 2 pousse la plaquette vers la position repos.In the embodiment of FIG. 1B, in the rest position the wafer is not in contact with the fixed core but it is the stop 17B which is in contact with the fixed core. This makes it possible to prevent the plate from deforming when the spring 25 visible on the figure 2 pushes the pad to the rest position.

Dispositif de contact 15Contact device 15

Le dispositif de contact va maintenant être décrit en détails à partir de la figure 2.The contact device will now be described in detail starting from figure 2 .

La figure 2 représente une vue éclatée d'un dispositif de contact 15 selon l'invention. Le dispositif de contact comprend une tige de contact 17 réalisée en matériau isolant électriquement, par exemple en matériau polymère. La tige de contact 17 comprend une première surface radiale formant une collerette de maintien 17a d'un premier diamètre et une deuxième surface radiale formant une collerette de fermeture 17b d'un deuxième diamètre inférieur au premier diamètre. Les collerettes de maintien 17a et de fermeture 17b sont monoblocs avec la tige de contact 17, c'est-à-dire issues de matière avec la tige de contact 17. La plaquette de contact 19 est réalisée en matériau conducteur, par exemple en cuivre, et comprend un trou 19a central et circulaire dont le diamètre est supérieur au diamètre de la collerette de fermeture 17b et inférieur au diamètre de la collerette de maintien 17a.The figure 2 shows an exploded view of a contact device 15 according to the invention. The contact device comprises a contact rod 17 made of an electrically insulating material, for example of a polymer material. The contact rod 17 comprises a first radial surface forming a retaining collar 17a of a first diameter and a second radial surface forming a closing collar 17b of a second diameter smaller than the first diameter. The retaining 17a and closing 17b flanges are integral with the contact rod 17, that is to say made from material with the contact rod 17. The contact plate 19 is made of a conductive material, for example copper. , and comprises a central circular hole 19a, the diameter of which is greater than the diameter of the closing flange 17b and less than the diameter of the retaining flange 17a.

Ainsi, la plaquette de contact est montée sur la tige de contact 17 en insérant la tige de contact 17 dans le trou 19a de la plaquette de contact 19 comme indiqué par la flèche 29. La plaquette de contact 19 vient alors en contact avec la collerette de maintien 17a d'un premier côté de la collerette de maintien 17a. La largeur de la plaquette est sensiblement égale au diamètre de la collerette de maintien 17a de sorte que la collerette de maintien 17a recouvre sensiblement la largeur de la plaquette de contact 19 ce qui contribue à la stabilité de la plaquette de contact 19. Le ressort d'écrasement 25 dont le diamètre est supérieur au diamètre du trou 19a de la plaquette de contact 19 est positionné autour de la tige de contact 17 et vient en contact avec la plaquette de contact 17 comme indiqué par la flèche 31.Thus, the contact plate is mounted on the contact rod 17 by inserting the contact rod 17 into the hole 19a of the contact plate 19 as indicated by the arrow 29. The contact plate 19 then comes into contact with the collar. retaining 17a on a first side of the retaining collar 17a. The width of the plate is substantially equal to the diameter of the retaining collar 17a so that the retaining collar 17a substantially covers the width of the contact plate 19 which contributes to the stability of the contact plate 19. The spring d The crush 25 whose diameter is greater than the diameter of the hole 19a of the contact plate 19 is positioned around the contact rod 17 and comes into contact with the contact plate 17 as indicated by the arrow 31.

Le ressort d'écrasement 25 comprend au moins une spire à son extrémité dont une portion comprend une surface plane perpendiculaire à l'axe de révolution du ressort d'écrasement 25. Cette surface plane est par exemple obtenue par meulage au niveau de l'extrémité du ressort en contact avec la plaquette de contact 17 de manière à obtenir une surface plane à l'extrémité du ressort d'écrasement 25 et accroître la zone de contact entre le ressort d'écrasement 25 et la plaquette de contact 17 et améliorer ainsi la stabilité de la plaquette de contact 17 notamment lors du passage en position active de la tige de contact 17. Le dispositif de contact 15 comprend également un clip de fermeture 33 dont la largeur radiale est supérieure ou égale au diamètre du ressort d'écrasement 25 et dans lequel est ménagée une encoche radiale 33a dont la largeur est inférieure au diamètre de la collerette de fermeture 17b et qui est destinée à recevoir une portion de la tige de contact 17.The crushing spring 25 comprises at least one turn at its end, a portion of which comprises a flat surface perpendicular to the axis of revolution of the crushing spring 25. This flat surface is for example obtained by grinding at the end. of the spring in contact with the contact plate 17 so as to obtain a flat surface at the end of the crush spring 25 and increase the contact area between the crush spring 25 and the contact plate 17 and thus improve the stability of the contact plate 17 in particular during the passage into the active position of the contact rod 17. The contact device 15 also comprises a closing clip 33, the radial width of which is greater than or equal to the diameter of the crushing spring 25 and in which a radial notch 33a is formed, the width of which is less than the diameter of the closing flange 17b and which is intended to receive a portion of the contact rod 17.

Le clip de fermeture 33 vient se positionner autour de la tige de contact 17 contre la surface radiale formée par la collerette de fermeture 17b, comme représenté par la flèche 35. Le clip de fermeture vient donc entre le ressort d'écrasement 25 et la collerette de fermeture 17b de manière à maintenir le ressort d'écrasement 25 et la plaquette de contact 19 en position sur la tige de contact 17.The closing clip 33 is positioned around the contact rod 17 against the radial surface formed by the closing flange 17b, as shown by the arrow 35. The closing clip therefore comes between the crushing spring 25 and the flange. closure 17b so as to hold the crushing spring 25 and the contact plate 19 in position on the contact rod 17.

Le clip de fermeture 33 est donc monté sur la tige de contact 17 après la plaquette de contact 19 et le ressort d'écrasement 25, le montage du clip de fermeture 33 nécessitant de comprimer le ressort d'écrasement 25 pour être monté sur la tige de contact 17.The closing clip 33 is therefore mounted on the contact rod 17 after the contact plate 19 and the crushing spring 25, the assembly of the closing clip 33 necessitating the compression of the crushing spring 25 in order to be mounted on the rod. contact 17.

Le clip de fermeture 33 applique alors une précontrainte sur le ressort d'écrasement 25 qui applique alors une force sur la plaquette de contact 19 en direction de la collerette de maintien 17a, ce qui contribue à maintenir au maximum la plaquette de contact 19 en appui sur la collerette de maintien 17a. Le ressort d'écrasement 25 peut également comprendre une spire comprenant une portion plane perpendiculaire à l'axe de révolution du ressort d'écrasement 25 à sa deuxième extrémité en contact avec le clip de fermeture 33 de manière à accroître la surface de contact entre le ressort d'écrasement 25 et le clip de fermeture 33.The closing clip 33 then applies a preload on the crushing spring 25 which then applies a force on the contact plate 19 in the direction of the retaining flange 17a, which helps to keep the contact plate 19 as much as possible. on the retaining collar 17a. The crushing spring 25 may also comprise a coil comprising a flat portion perpendicular to the axis of revolution of the crushing spring 25 at its second end in contact with the closing clip 33 so as to increase the contact surface between the crushing spring 25 and the closing clip 33.

Le ressort de rappel 27 vient se positionner sur la tige de contact en appui sur un deuxième côté de la collerette de maintien opposé au premier côté comme indiqué par la flèche 37. Le diamètre intérieur du ressort de rappel 27 est légèrement inférieur ou sensiblement égal au diamètre de l'extrémité de la tige de contact 17 destinée à recevoir le ressort de rappel 27 de sorte que les frottements entre le ressort de rappel 27 et la tige de contact 17 permettent le maintien en position du ressort de rappel 27 sur la tige de contact 17, notamment avant son montage dans le contacteur 1.The return spring 27 is positioned on the contact rod resting on a second side of the retaining collar opposite the first side as indicated by arrow 37. The internal diameter of the return spring 27 is slightly less than or substantially equal to the first side. diameter of the end of the contact rod 17 intended to receive the return spring 27 so that the friction between the return spring 27 and the contact rod 17 allow the return spring 27 to be held in position on the return rod contact 17, in particular before it is mounted in contactor 1.

Comme pour le ressort d'écrasement 25, le ressort de rappel 27 peut comprendre, au moins à l'une de ses extrémités, une spire comprenant une portion plane perpendiculaire à l'axe de révolution du ressort de rappel 27 de manière à obtenir une extrémité avec une surface plane et maximiser la surface de contact avec la collerette de maintien 17a d'un coté et le capot 3 du contacteur 1 de l'autre.As for the crushing spring 25, the return spring 27 may comprise, at least at one of its ends, a coil comprising a flat portion perpendicular to the axis of revolution of the return spring 27 so as to obtain a end with a flat surface and maximize the contact surface with the retaining collar 17a on one side and the cover 3 of the contactor 1 on the other.

Clip de fermeture 33Closing clip 33

Le clip de fermeture va maintenant être décrit plus en détails à partir des figures 3a, 3b, 3c, 3d, 4a, 4b, 4c , 4d et 5.The closure clip will now be described in more detail from the figures 3a, 3b, 3c, 3d , 4a, 4b, 4c, 4d and 5 .

Afin d'assurer le centrage et le maintien en position du clip de fermeture 33, ce dernier comprend un bord périphérique de centrage 33b sur sa face destinée à venir en contact avec la collerette de fermeture 17b comme représenté sur les figure 3a, 3b, 3c , 3d le bord périphérique de centrage 33b ayant un diamètre légèrement supérieure au diamètre de la collerette de fermeture 17b de manière à venir se positionner autour de cette dernière tout en laissant un jeu minimum entre les deux. Le clip de fermeture 33 vient donc entourer au moins partiellement la collerette de fermeture 17b.In order to ensure the centering and maintenance in position of the closure clip 33, the latter comprises a peripheral centering edge 33b on its face intended to come into contact with the closure flange 17b as shown in the figures. figure 3a, 3b, 3c, 3d the peripheral centering edge 33b having a diameter slightly greater than the diameter of the closure flange 17b so as to be positioned around the latter while leaving a minimum clearance between the two. The closure clip 33 therefore at least partially surrounds the closure collar 17b.

Selon un mode réalisation alternatif présenté sur les figures 4a, 4b, 4c et 4d le clip de fermeture 33 comprend un deuxième bord périphérique de centrage 33c sur sa deuxième face destinée à être en contact avec le ressort d'écrasement 25, le deuxième bord périphérique de centrage 33c ayant un diamètre légèrement supérieur au diamètre du ressort d'écrasement 25 de manière à venir entourer au moins partiellement l'extrémité du ressort d'écrasement 25 tout en limitant le jeu entre ce dernier et le clip de fermeture 33. Ce deuxième bord périphérique de centrage 33c permet de maintenir le ressort d'écrasement 25 dans une position centrée autour de la tige de contact 17. Les deux bords périphériques de centrage 33b et 33c peuvent être différents, par exemple dans le cas où le diamètre du ressort d'écrasement 25 et de la collerette de fermeture 17b sont différents mais peuvent également être identiques dans le cas ou le diamètre du ressort d'écrasement 25 et de la collerette de fermeture 17b sont sensiblement identiques de manière à faciliter la fabrication du clip de fermeture 33 et réduire les coûts de fabrication.According to an alternative embodiment presented on the figures 4a, 4b, 4c and 4d the closing clip 33 comprises a second peripheral centering edge 33c on its second face intended to be in contact with the crushing spring 25, the second peripheral centering edge 33c having a diameter slightly greater than the diameter of the crushing spring 25 so as to come to surround at least partially the end of the crushing spring 25 while limiting the play between the latter and the closing clip 33. This second peripheral centering edge 33c makes it possible to keep the crushing spring 25 in a position centered around the contact rod 17. The two peripheral centering edges 33b and 33c can be different, for example in the case where the diameter of the crushing spring 25 and of the closing flange 17b are different but can also be identical in the case where the diameter of the crushing spring 25 and of the closing flange 17b are substantially identical so as to facilitate the manufacture of the clip of f closure 33 and reduce manufacturing costs.

La figure 5 représente une coupe du dispositif dont le clip de fermeture 33 est selon le mode de réalisation de la figure 4a à 4D, à l'état monté sur la tige de contact 17. Le premier bord périphérique de centrage 33b vient se positionner autour de la collerette de fermeture 17b et le deuxième bord périphérique de centrage 33c vient se positionner au centre du ressort d'écrasement 25 permettant ainsi un maintien et un centrage du ressort d'écrasement 25 autour de la tige de contact 17.The figure 5 shows a section of the device, the closure clip 33 of which is according to the embodiment of the figure 4a to 4D , in the state mounted on the contact rod 17. The first peripheral centering edge 33b is positioned around the closing flange 17b and the second peripheral centering edge 33c is positioned in the center of the crushing spring 25 allowing thus maintaining and centering the crushing spring 25 around the contact rod 17.

Ressort d'écrasement 25 et ressort de rappel 27Crush spring 25 and return spring 27

Les ressorts d'écrasement 25 et de rappel 27 sont des ressorts hélicoïdaux généralement métalliques par exemple en acier. Dans la présente invention, la raideur du ressort d'écrasement 25 est supérieure à la raideur du ressort de rappel 27. De plus, le ressort d'écrasement 25 est comprimé entre la plaquette de contact 19 et le clip de fermeture 33 de sorte qu'à l'état de repos du dispositif de contact 15, une précontrainte entre 40 et 50 Newtons est appliqué sur le ressort d'écrasement 25. La figure 6 représente une figure du dispositif de contact 15 à l'état assemblé. Ce dispositif de contact 15 comporte seulement cinq pièces : la tige de contact 17, le ressort de rappel 27, la plaquette de contact 19, le ressort d'écrasement 25 et le clip de fermeture 33. Ce faible nombre de pièces permet de réduire le coût du dispositif et de rendre la montage plus simple et plus rapide ce qui permet de réduire également les coûts de montage.The crushing springs 25 and return springs 27 are generally metallic helical springs, for example made of steel. In the present invention, the stiffness of the squeeze spring 25 is greater than the stiffness of the return spring 27. In addition, the squeeze spring 25 is compressed between the contact pad 19 and the closure clip 33 so that 'in the rest state of the contact device 15, a preload between 40 and 50 Newtons is applied to the crushing spring 25. The figure 6 shows a figure of the contact device 15 in the assembled state. This contact device 15 has only five parts: the contact rod 17, the return spring 27, the contact plate 19, the crushing spring 25 and the closing clip 33. This small number of parts makes it possible to reduce the load. cost of the device and make assembly simpler and faster, which also makes it possible to reduce assembly costs.

Comme décrit précédemment, en fonctionnement, l'alimentation du jeu de bobines 5 provoque donc le déplacement de la tige de contact en position active, ce qui provoque la mise en contact de la plaquette de contact avec les bornes électriques 21 et 23. A cet instant, le ressort d'écrasement 25 applique un effort sur la plaquette de contact 19 supérieur d'au moins 20 Newtons à l'effort exercé par le ressort de ressort de rappel 27 sur la tige de contact 17 du fait de la différence de raideur entre le ressort d'écrasement 25 et le ressort de rappel 27. L'effort exercé par le ressort de rappel 27 sur la tige de contact 17 est compris dans un intervalle allant de 25 à 40 Newtons. L'effort exercé par le ressort d'écrasement 25 sur la plaquette de contact 19 est par exemple de 51 Newtons tandis que l'effort exercé par le ressort de rappel 27 sur la tige de contact 17 est de 28 Newtons. Cet effort supérieur du ressort d'écrasement 25 par rapport au ressort de rappel 27 permet de limiter le jeu formé entre la plaquette de contact 19 et la collerette de maintien 17a en position finale de la plaquette de contact 19, c'est-à-dire au moment du contact avec les bornes électriques 21 et 23. Le rebond subi par la plaquette de contact 19 est donc réduit lors du passage en position active de la tige de contact 17 de sorte que l'alimentation du moteur électrique est réalisée sans qu'il y ait de faux contacts. Par ailleurs, lorsque les bobines 5a et 5b du jeu de bobines 5 ne sont plus alimentées. Le ressort de rappel 27 permet de déconnecter la plaquette de contact 19 des bornes électriques 21 et 25 de manière à permettre le retour de la tige de contact 17 en position de repos.As described above, in operation, the power supply to the set of coils 5 therefore causes the contact rod to move into the active position, which causes the contact plate to come into contact with the electrical terminals 21 and 23. To this end moment, the crushing spring 25 applies a force on the contact plate 19 at least 20 Newtons greater than the force exerted by the return spring spring 27 on the contact rod 17 due to the difference in stiffness between the crushing spring 25 and the return spring 27. The force exerted by the return spring 27 on the contact rod 17 is within a range of 25 to 40 Newtons. The force exerted by the crushing spring 25 on the contact plate 19 is for example 51 Newtons while the force exerted by the return spring 27 on the contact rod 17 is 28 Newtons. This greater force of the crushing spring 25 relative to the return spring 27 makes it possible to limit the play formed between the contact plate 19 and the retaining collar 17a in the final position of the contact plate 19, that is to say. ie at the time of contact with the electrical terminals 21 and 23. The rebound undergone by the contact plate 19 is therefore reduced when the contact rod 17 goes into the active position so that the power supply to the electric motor is carried out without qu 'there are false contacts. Furthermore, when the coils 5a and 5b of the set of coils 5 are no longer supplied. The return spring 27 makes it possible to disconnect the contact plate 19 of the electrical terminals 21 and 25 so as to allow the return of the contact rod 17 in the rest position.

Ainsi, l'utilisation d'un ressort d'écrasement 25 ayant un diamètre important, un nombre de spires élevées, une spire comprenant une portion plane perpendiculaire à son axe de révolution au niveau d'au moins l'une de ses extrémités et dont la raideur est supérieure à la raideur du ressort de rappel 27 permet d'obtenir un dispositif de contact plus stable lors du passage de la position de repos à la position active lorsque la plaquette de contact 19 entre en contact avec les bornes électriques 21 et 23 ce qui permet de réduire fortement voire de supprimer l'effet de rebond dû à l'accostage de la plaquette de contact 19 sur les bornes électriques 21 et 23 ou dû à l'équilibrage du ressort d'écrasement 25 après cet accostage.Thus, the use of a crushing spring 25 having a large diameter, a large number of turns, a turn comprising a flat portion perpendicular to its axis of revolution at the level of at least one of its ends and of which the stiffness is greater than the stiffness of the return spring 27 makes it possible to obtain a more stable contact device when passing from the rest position to the active position when the contact plate 19 comes into contact with the electrical terminals 21 and 23 which makes it possible to greatly reduce or even eliminate the rebound effect due to the docking of the contact plate 19 on the electrical terminals 21 and 23 or due to the balancing of the crushing spring 25 after this docking.

Le dispositif de contact 15 selon la présente invention permet donc, de par sa structure et son nombre de pièce réduit, d'obtenir un dispositif de contact 15 fiable dans le temps, ayant un coût de production réduit et diminuant ou supprimant l'effet de rebond lors de l'activation du contacteur 1.The contact device 15 according to the present invention therefore makes it possible, by virtue of its structure and its reduced number of parts, to obtain a contact device 15 that is reliable over time, having a reduced production cost and reducing or eliminating the effect of rebound when switch 1 is activated.

Claims (11)

  1. Starter contactor (1) comprising:
    - a cover (3);
    - a contact rod (17) which is mobile relative to the cover (3), between a position of rest and an active position;
    - a retention collar (17a) which is integral in translation with the contact rod (17);
    - a contact plate (19) made of electrically conductive material fitted on the contact rod (17), the contact plate (19) being mobile relative to the contact rod (17), between an initial position in which the contact rod (17) is in the position of rest, and a final position in which the contact rod (17) is in the active position, the contact plate (19) being in contact with the retention collar (17a) in the initial position, and a gap being formed between the retention collar (17a) and the contact plate (19) in the final position;
    - at least one electrical terminal (21, 23), the said at least one electrical terminal (21, 23) being in contact with the contact plate (19) in its final position;
    - a compression spring (25) which is designed to be fitted around and on the contact rod (17) on a first side of the contact plate (19), with the compression spring (25) developing a force for compression of the contact plate (19) on the at least one terminal in the final position;
    - a return spring (27) which is designed to be fitted on the contact rod (17) on a second side of the contact plate (19), opposite the first side of the contact plate (19), with the return spring (27) developing a return force on the contact rod (17), from the active position to the position of rest, thus making it possible to disconnect the contact plate (19) from the at least one electrical terminal (21, 23),
    characterised in that the force of the compression spring (25) on the contact plate (19) in the final position is at least 20 N more than the force of the return spring (27) on the contact rod (17) in the active position.
  2. Contactor (1) according to claim 1, wherein the contact rod (17) is made of electrically insulating material.
  3. Contactor (1) according to claim 2, wherein the contact rod (17) is made of polymer material.
  4. Contactor (1) according to one of the preceding claims, wherein the force of the return spring (27) on the contact rod (17) in the active position is between 25 and 40 N.
  5. Contactor (1) according to one of the preceding claims, wherein the compression spring (25) is in contact with the contact plate (19).
  6. Contactor (1) according to claim 5, wherein the compression spring (25) comprises at least one turn at the end of the spring (25), this turn comprising a portion of flat surface perpendicular to the axis of revolution of the spring in contact with the contact plate (19).
  7. Contactor (1) according to claim 6, wherein the retention collar (17a) is in a single piece with the contact rod (17).
  8. Contactor (1) according to one of the preceding claims, wherein the compression spring (25) is retained by a closure clip (33) which can be positioned against a radial closure surface (17b) of the contact rod (17).
  9. Contactor (1) according to one of the preceding claims, wherein the number of turns of the compression spring (25) is more than two.
  10. Contactor (1) according to one of the preceding claims, wherein, in the position of rest of the contact rod (17), the compression spring (25) is pre-stressed, and applies a force of 45 N ± 10% on the contact plate (19).
  11. Starter comprising a contactor (1) according to one of the preceding claims.
EP15725775.9A 2014-05-05 2015-04-22 Contact device of a starter contactor Active EP3140843B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1454029A FR3020716B1 (en) 2014-05-05 2014-05-05 CONTACT DEVICE OF A STARTER SWITCH
PCT/FR2015/051084 WO2015170025A1 (en) 2014-05-05 2015-04-22 Contact device of a starter contactor

Publications (2)

Publication Number Publication Date
EP3140843A1 EP3140843A1 (en) 2017-03-15
EP3140843B1 true EP3140843B1 (en) 2021-04-14

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ID=52807846

Family Applications (1)

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EP15725775.9A Active EP3140843B1 (en) 2014-05-05 2015-04-22 Contact device of a starter contactor

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EP (1) EP3140843B1 (en)
CN (1) CN106463280A (en)
FR (1) FR3020716B1 (en)
WO (1) WO2015170025A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2739899B1 (en) * 1995-10-12 1997-11-21 Valeo Equip Electr Moteur STARTER CONTACTOR HAVING IMPROVED FIXED CONTACTS AND MOTOR VEHICLE STARTER EQUIPPED WITH SUCH A CONTACTOR
FR2895143B1 (en) * 2005-12-15 2011-03-18 Valeo Equip Electr Moteur MOBILE CREW FOR ELECTROMAGNETIC CONTACTOR AND CONTACTOR COMPRISING SUCH A CREW
FR2957711B1 (en) * 2010-03-22 2016-10-14 Valeo Equip Electr Moteur MOBILE CREW FOR ELECTROMAGNETIC CONTACTOR AND ELECTROMAGNETIC CONTACTING POWER SWITCH
DE102012201967B4 (en) * 2012-02-09 2019-01-17 Te Connectivity Germany Gmbh Switching contact assembly and kit and assembly method for this

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WINTZ JEAN-LUC ET AL: "Design Guideline of Contactors: Optimal Use of Assembled Contacts", 2013 IEEE 59TH HOLM CONFERENCE ON ELECTRICAL CONTACTS (HOLM 2013), IEEE, 22 September 2013 (2013-09-22), pages 1 - 10, XP032520923, ISSN: 1062-6808, ISBN: 978-1-4799-1556-9, [retrieved on 20131031], DOI: 10.1109/HOLM.2013.6651406 *

Also Published As

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CN106463280A (en) 2017-02-22
FR3020716A1 (en) 2015-11-06
EP3140843A1 (en) 2017-03-15
WO2015170025A1 (en) 2015-11-12
FR3020716B1 (en) 2017-11-03

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