EP2858084A1 - Electromagnetic contactor for a starter of a motor vehicle and corresponding starter - Google Patents

Electromagnetic contactor for a starter of a motor vehicle and corresponding starter Download PDF

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Publication number
EP2858084A1
EP2858084A1 EP20140187657 EP14187657A EP2858084A1 EP 2858084 A1 EP2858084 A1 EP 2858084A1 EP 20140187657 EP20140187657 EP 20140187657 EP 14187657 A EP14187657 A EP 14187657A EP 2858084 A1 EP2858084 A1 EP 2858084A1
Authority
EP
European Patent Office
Prior art keywords
contact
contact plate
contactor according
plate
movable core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20140187657
Other languages
German (de)
French (fr)
Other versions
EP2858084B1 (en
Inventor
Rachid Hamdi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Equipements Electriques Moteur SAS
Original Assignee
Valeo Equipements Electriques Moteur SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Publication of EP2858084A1 publication Critical patent/EP2858084A1/en
Application granted granted Critical
Publication of EP2858084B1 publication Critical patent/EP2858084B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H9/041—Casings hermetically closed by a diaphragm through which passes an actuating member

Definitions

  • the present invention relates to an electromagnetic starter contactor of a motor vehicle and the corresponding starter.
  • the invention finds a particularly advantageous application in the field of electromagnetic contactors for power circuits, in particular for an electric motor of a thermal engine starter, in particular of a motor vehicle.
  • an electromagnetic contactor for a power circuit comprises a movable contact mounted on a control rod.
  • the movable contact is intended to come into contact with power terminal heads, arranged in a contact chamber located at the rear of the contactor.
  • This contactor is for example used to control the actuation of an electric motor of an internal combustion engine starter.
  • an electromagnetic contactor 1 shown on the Figures 1a to 1c has a movable core 3, a fixed core 4 and a metal housing 6, or tank, in which is arranged at least one coil 8 mounted on an insulating annular support 9.
  • This support 9 and the front end of the casing 6 are centrally provided with a passage for the mobile core 3.
  • One end of the mobile core 3 is connected to a pivoting lever (not shown) which acts for example on the launcher of the starter as described in the document FR2795884 .
  • the spring teeth against teeth 10 can be compressed in the event of direct non-penetration of the starter gear (not shown) in the starter ring connected to the heat engine and the connecting rod 12 connected to the pivoting lever.
  • the other end of the movable core 3 is intended to act on a front end of a thrust rod 15 through a central hole 16 fixed core 4 in which the front portion of the rod 15 is slidably mounted.
  • the control rod 15 carries a contact plate 21.
  • the contact plate 21 extends transversely with respect to the rod 15 to cooperate with two heads 23, 24 of electrical terminals 26, 27 of an electrical power circuit and to establish between them an electrical contact.
  • One of the terminals 26, 27 is intended to be connected to a positive terminal of the battery, the other terminal being intended to be connected by means of a cable to the brushes of the electric motor of positive polarity.
  • the two terminals 26, 27 are fixed and carried by a cover 30 of electrically insulating material ensuring the closing of the rear of the tank 6.
  • the attachment of the cover 30 is made by folding the material of the free end of the tank 6 on the cover 30.
  • the heads 23, 24 of the power terminals are arranged in a contact chamber 41 defined by a wall 40 of the cover 30.
  • the rod 15 carries an axial compression spring 32 arranged between a shoulder 33 of the control rod 15 and a face of the movable contact 21.
  • the switch 1 also comprises a return spring 38 arranged between the cover 30 and a stop of the control rod.
  • the mobile core 3 is initially in a position, called the rest position, in which the core 3 is remote from the fixed core 4.
  • the coil 8 is electrically activated and then creates a magnetic field.
  • This magnetic field allows the axial displacement of the movable core 3 towards the fixed core 4.
  • the rear end of the movable core 3 comes into contact with the front end of the control rod 15 and then axially moves the rod 15 through the hole 16 towards the rear of the switch 1.
  • the displacement of the rod 15 has the effect of compressing the return spring 38 until the movable contact 21 comes into contact with the heads 23, 24 of the terminals 26, 27 electric.
  • the contactor 1 is then in a so-called electrical contact position visible on the figure 1b , the contact plate 21 being in a position called "active".
  • the starter is exposed to the presence of impurities such as dirt, liquid (water, brake fluid) or ice, likely to enter the chamber This can lead to insulation problems between the contact plate 21 and the power terminals 26, 27 when the contact plate 21 is in the off position.
  • the invention aims to effectively remedy at least one of these drawbacks by proposing an electromagnetic starter contactor of a motor vehicle having at least two power terminals, a contact plate, and a movable core capable of generating the displacement of said contact of a disabling position in which the contact plate cuts the contact between the two power terminals to an active position in wherein the contact plate makes contact between the two power terminals, wherein the contact plate is permanently in contact with one of the power terminals in the active position and in the deactivated position.
  • the movable core is movable between a rest position at a magnetized position, wherein the movable core generates the displacement of said contact plate to establish contact between the two terminals when it moves from its rest position to its magnetized position and in that that the return of the movable core to its rest position allows the contact plate to cut the electrical contact.
  • the contact plate is made of a deformable material so that during its passage from the deactivated position to the active position, said contact plate is able to come into contact with the other power terminal following a deformation generated by a displacement of the movable core, said contact plate then returning to its initial form in the deactivated position.
  • Such an embodiment makes it possible to have a contactor provided with a number of pieces that is smaller than the part numbers in the prior art. Indeed, the fact that the contact plate is deformable allows to remove the contact spring of the prior art to allow the movable core to finish its race to the final position while having an electrical contact between the terminals by the through the contact plate.
  • the contact plate is made of deformable elastic material and is arranged to allow the rod of control to the home position when the movable core returns to the home position.
  • the movable core causes the deformation of said contact plate by means of a control rod.
  • said contact plate is crimped to the power terminal with which said contact plate is in contact in the deactivated position and in the active position.
  • the crimping makes it possible to have a simple and safe electrical contact between this terminal and the contact plate.
  • said contact plate is slidably mounted with respect to the power terminal with which said plate is in contact in the deactivated position and in the active position.
  • This embodiment makes it possible to have a rigid contact plate.
  • an elastic return means is positioned between said contact plate and said power terminal so as to urge said contact plate in the off position when no force is applied to said contact plate.
  • said contact plate comprises a pad intended to cooperate with a head of the other power terminal when said contact plate is in the active position.
  • said pad of said contact plate and the head of the power terminal have complementary shaped toothings.
  • said contact plate is configured to be in the active position before the movable core is in the magnetized position.
  • magnetic position is meant the final position in which the movable core remains stationary, in general the core abuts against an organ, generally a fixed core. This ensures that there is electrical contact when the core is in the magnetized position.
  • a cover comprises a wall delimiting a chamber, called a contact chamber, inside which are positioned heads of the two power terminals as well as said contact plate, a membrane ensuring a tight closure of said chamber of contact. contact.
  • the contact chamber thus closed by the membrane containing the contact plate and the power terminals form an autonomous unit whose proper functioning can be tested before its attachment with the rear part of the tank, which saves time in case malfunction compared to state-of-the-art systems.
  • the membrane prevents the penetration of impurities such as dirt, liquid (water, brake fluid) or ice inside the contact chamber. This limits the risk of poor insulation between the contact plate and the power terminals.
  • the membrane comprises at least one central zone made of a deformable material to allow the displacement of said contact plate by the action of an element outside the hood.
  • the membrane is made entirely of a deformable material.
  • the membrane comprises a first rigid part fixed on one end of the cover and a second part intended to cooperate with an element external to the contact chamber, said second part being connected to said first part by means of a elastic element.
  • the rigid part allows its easy attachment to the cover, for example by ultrasonic welding or any other method.
  • said contact plate is made of a copper and beryllium alloy. This alloy has both properties of elasticity and electrical conductivity.
  • Such a contact plate makes it possible to have elastic characteristics allowing the invention.
  • the invention also relates to the motor vehicle starter equipped with a contactor according to the invention.
  • the Figures 2a to 2c illustrate a contactor 1 rising in place of the contactor of the Figures 1a to 1 vs.
  • This contactor 1 is for example used to control the actuation of an electric motor of an internal combustion engine starter.
  • the contactor 1 has a mobile core 3, a fixed core 4, both of ferromagnetic material, and a metal housing 6, also called tank, in which is arranged two coils (a call coil 81 and a holding coil 82) mounted on an insulating annular support 9.
  • the support 9 is engaged on an annular bearing surface of the fixed core 4.
  • This support 9 and the front end of the tank 6 are centrally provided with a passage for the movable core 3.
  • the call coil 81 when electrically activated, controls the axial displacement of the mobile core 3 towards the core fixed 4.
  • the mobile core 3 then moves from a so-called rest position in which said movable core 3 is moved away from the fixed core 4 to a so-called magnetized position in which the mobile core 3 is in contact with the fixed core 4.
  • the coil holding means 82 keeps the movable core in the magnetized position as explained in more detail below.
  • a front end of the mobile core 3 is connected to a pivoting lever (not shown) which acts for example on the starter of the starter as described in the document FR2795884 .
  • the spring teeth against teeth can be compressed in the event of direct non-penetration of the starter pinion (not shown) in the starter ring connected to the heat engine and in 12 the connecting rod to the pivoting lever.
  • the rod 12 and the spring 10 are mounted inside a cavity of electrically insulating material.
  • the other end of the movable core 3 is intended to act on a front end of a control rod 15 by pushing through a central hole 16 of the fixed core 4 in which the front portion of the rod 15 is slidably mounted. This thrust of the rod 15 is performed when the movable core 3 moves from the rest position to the magnetized position.
  • this rod 15 comprises a shoulder 151.
  • This shoulder 151 and a central portion of the rod 15 are mounted inside a cavity of the fixed core 4 closed by a washer 17.
  • the washer 17 is provided with a central opening to allow passage of the rear portion of the rod 15 whose end is in cooperation with a central zone 44 of a membrane 43 described in more detail below.
  • a return spring 34 is mounted on the one hand bearing between this shoulder 151 and on the other hand bears against the washer 17 forming a stop.
  • two power terminals 26 and 27 are fixed and are carried by a cover 30 of electrically insulating material. More specifically, the cover 30 has a wall 40 delimiting a contact chamber 41 inside which the heads are located. 23, 24 of the power terminals and a contact plate 21.
  • One of the terminals 26 is intended to be connected to the positive terminal of the battery, while the other terminal 27 is intended to be connected to the electric motor of the starter as described. for example in the document FR2795884 supra.
  • the power terminals 26, 27 pass axially right through the bottom of the chamber 41, so that the heads 23, 24 of the terminals are pressed against the bottom of the chamber 41, the rear part of the terminals. power 26, 27 protruding from the bottom of the chamber 41 to allow respectively to make the connections with the positive terminal of the battery and the positive terminal of the brushes of the electric motor of the starter.
  • the membrane 43 ensures a sealed closure of the contact chamber 41.
  • This membrane 43 is located on the open side of the chamber 41 opening towards the fixed core 4.
  • the membrane 43 comprises at least a central zone 44 made of a deformable material to allow the displacement of the contact plate 21 by the action of the control rod 15 via said central zone 44.
  • the central zone 44 has a concave shape cooperating with the end of the control rod 15.
  • the membrane 43 is entirely made of a deformable material.
  • the membrane 43 comprises a first rigid portion 46 fixed on a free end of the cover 30 and a second central portion 47 intended to cooperate with the rear end of the control rod 15.
  • the second portion 47 is connected to the first portion 46 via a resilient member 48 so as to allow movement of the second portion 47 relative to the first portion 46 when the control rod 15 comes into contact with the contact plate 21 to move it through of the second part 47.
  • the first and second parts 46, 47 may for example be made of a metallic material.
  • the membrane 43 may be fixed on the free end of the support 30 by welding, crimping, gluing or any other suitable fastening technique.
  • the contact chamber 41 thus closed by the membrane 43 containing the contact plate 21 and the power terminals 26, 27 forms an autonomous assembly whose proper functioning can be tested before its attachment with the rear part of the tank 6, which provides a time saving in the event of a malfunction compared to the systems of the state of the art described above which could only be tested after fixing the cover 30 with the tank 6 and which therefore required dismantling of the chamber 41 by case of detection of a malfunction.
  • the membrane 43 prevents the penetration of impurities such as dirt, liquid (water, brake fluid) or ice, inside the contact chamber 41, which limits the risk of poor insulation between the contact plate 21 and the power terminals 26, 27.
  • the fixing of the chamber 41 on the contactor 1 is performed by folding the material of the free end of the tank 6 on the hood 30.
  • one of the terminals 26 is constantly connected, for example by crimping, to the contact plate 21 made of a deformable material.
  • the contact plate 21 may be made for example in a copper and beryllium alloy.
  • the contact plate 21 is able to go from a deactivated position to an active position, and vice versa. In the deactivated position, the contact plate 21 is remote from the power terminal 27 so as to cut off the contact between the two power terminals 26, 27. In the active position, the contact plate 21 makes contact between the two power terminals 26, 27 via the contact heads 23, 24.
  • the transition from the deactivated position to the active position occurs due to a deformation of the contact plate 21 generated by the displacement of the movable core 3.
  • a pellet 49 reach by the contact plate 21 is intended to cooperate with the head 24 of the terminal 27 when the contact plate 21 is in the active position.
  • the pellet 49 of the contact plate 21 and the head 24 of the terminal 27 comprise complementary-shaped toothings.
  • the starting of the heat engine is controlled, which electrically activates the coil of 81.
  • the coil 81 then creates a magnetic field, which generates the axial displacement of the movable core 3 towards the fixed core 4.
  • the rear end of the movable core 3 comes into contact with the front end of the rod 15. in order to move the control rod 15 through the central hole 16 of the fixed core 4 towards the contact plate 21 while compressing the return spring 34.
  • the end of the control rod 15 then applies a force on the contact plate 21 via the central zone 44 of the membrane 43 which is deformed.
  • the rod 15 thus indirectly applies a force on the contact plate 21 which will be able to deform to make contact with the power terminal 27 and thus move to the active position.
  • the contact between the contact plate 21 and the heads 23, 24 of the electric terminals 26, 27 thus makes it possible to electrically supply the electric motor of the starter.
  • the contactor 1 is then in the so-called electrical contact position shown on the figure 2b .
  • the return spring 34 continues to be compressed until the movable core 3 comes into contact with the fixed core 4.
  • the movable core 3 is then in the magnetized position as shown in FIG. Figure 2c .
  • the compression of the spring 34 and the flexibility of the contact plate 21 allow the displacement of the rod 15 after the movable contact 21 has come into contact with the heads 23, 24.
  • the movable core 3 is held in the magnetized position by the supply of the holding coil 82, the supply of the call coil 81 being cut off.
  • the power terminals 26, 27 are not axially offset with respect to each other and it is the contact plate 21 itself which establishes a connection with one of the heads 24 which is slightly raised relative to to the other contact head 23, as shown in Figures 3a and 3b .
  • the Figures 4a and 4b show an alternative embodiment of the contact plate 21 and its connection with the terminal 26 may replace the use of a deformable contact plate 21. More specifically, the contact plate 21 which is in this case a rigid plate is mounted on the terminal 26 via a sliding connection 54. An elastic return means 55 is positioned between the contact plate 21 and the terminal 26 so as to urging the contact plate 21 into the deactivated position when no force is applied to the contact plate 21 (cf. figure 4a ). An abutment means (not shown) integrated in the connection 54 makes it possible to retain the plate 21 axially.
  • FIGS. 5a and 5b show another embodiment in which the contact plate 21 is mounted on a second control rod 60 slidable inside a guide 61.
  • This control rod 60 further carries a second return spring 62 arranged between the contact plate 21 and a front end of the guide 61.
  • the spring 62 is provided to hold the contact plate 21 in abutment on a washer 63 forming a stop. distance of the heads 23, 24 when no force is applied to the second control rod 60.
  • a stop 64 is also provided to retain the control rod 60 inside the guide 61 when the contact plate 21 is in the off position.
  • the first control rod 15 moved by the movable core 3 as explained above can then bear against the membrane 43 on the front end of the second control rod 60 to move it rearward.
  • This has the effect of moving the contact plate 21 towards the power terminals 26, 27 until it comes into contact with the two power terminals 26, 27 in the active position (cf. figure 5b ).
  • the spring 62 compresses, while the rear stop 64 is moved away from the rear end of the guide 61.
  • the spring 34 is also compressed following displacement in translation of the rod 15.
  • the switch is arranged so that there is a clearance between the rear stop 64 and the rear cover when the second control rod is in the rear position, that is to say say when the mobile core is in the magnetized position.
  • the spring 34 decompresses, which causes the rod 15 to return to the initial position, which no longer exerts axial force on the second rod 60.
  • the spring 62 also decompresses and allows the return of the contact plate 21 in a position remote from the two power terminals 26, 27 (disengaged position) while the rear stop 64 of the second rod 60 rests against the rear end of the guide 61, as shown in FIG. figure 5a .
  • the invention is not limited to the embodiments described above, and it is also applicable to different forms of power electromagnetic contactors 1.
  • Those skilled in the art will thus have understood that the use of a sealed contact chamber 41 is independent of the use of a contact plate 21 always having a contact with one of the power terminals 26, 27. active and inactive position of the contact plate 21 even if the combination of these two features may facilitate the realization of the contact chamber 41.
  • the invention applies to all types of contactors 1 for electric motors of conventional starters internal combustion engine.
  • the contactor 1 can be implanted above the electric motor of the starter as in the document FR2795884 .
  • the contactor 1 is offset by being, for example, implanted transversely to the rear of the electric motor of the starter, as in the document FR2843427 .
  • the spring 10 teeth against teeth which is compressed in case of non direct penetration of the starter gear in the starter ring is implanted either in the contactor 1 as in figures 1 , 2 , 4 and 5 , either outside the contactor 1 between the launcher and the actuating lever as in the figure 1 of the document EP960276 .
  • the contactor 1 comprises only a coil 81 as described in the document FR2795884 .
  • a Specific electric motor is provided to actuate the lever so that the movable core 3 is simplified by being devoid of means for connection with the lever.
  • the contactor 1 according to the invention can belong to a coupling relay of two starters acting in parallel.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Push-Button Switches (AREA)

Abstract

L'invention porte principalement sur un contacteur électromagnétique (1) de démarreur de véhicule automobile comportant au moins deux bornes de puissance (26, 27), une plaque de contact (21), et un noyau mobile (3) apte à générer le déplacement de ladite plaque de contact (21) d'une position désactive dans laquelle la plaque de contact coupe le contact entre les deux bornes de puissance (26, 27) à une position active dans laquelle la plaque de contact (21) établit un contact entre les deux bornes de puissance (26, 27), dans lequel la plaque de contact (21) est en permanence en contact avec une des bornes de puissance (26) dans la position active et dans la position désactive. L'invention a également pour objet le démarreur de véhicule automobile correspondant.The invention relates primarily to an electromagnetic contactor (1) for a motor vehicle starter comprising at least two power terminals (26, 27), a contact plate (21), and a movable core (3) capable of generating the displacement of said contact plate (21) of a deactivated position in which the contact plate cuts the contact between the two power terminals (26, 27) to an active position in which the contact plate (21) makes contact between the two power terminals (26, 27), in which the contact plate (21) is permanently in contact with one of the power terminals (26) in the active position and in the deactivated position. The invention also relates to the corresponding motor vehicle starter.

Description

DOMAINE TECHNIQUE DE L'INVENTIONTECHNICAL FIELD OF THE INVENTION

La présente invention porte sur un contacteur électromagnétique de démarreur de véhicule automobile ainsi que sur le démarreur correspondant. L'invention trouve une application particulièrement avantageuse dans le domaine des contacteurs électromagnétiques pour circuit de puissance, notamment pour un moteur électrique d'un démarreur de moteur thermique, en particulier de véhicule automobile.The present invention relates to an electromagnetic starter contactor of a motor vehicle and the corresponding starter. The invention finds a particularly advantageous application in the field of electromagnetic contactors for power circuits, in particular for an electric motor of a thermal engine starter, in particular of a motor vehicle.

ARRIERE PLAN TECHNOLOGIQUEBACKGROUND TECHNOLOGY

Selon une conception connue, un contacteur électromagnétique pour un circuit de puissance comporte un contact mobile monté sur une tige de commande. Le contact mobile est destiné à venir en contact avec des têtes de bornes de puissance, agencées dans une chambre de contacts située à l'arrière du contacteur. Ce contacteur est par exemple utilisé pour commander l'actionnement d'un moteur électrique d'un démarreur de moteur à combustion interne.According to a known design, an electromagnetic contactor for a power circuit comprises a movable contact mounted on a control rod. The movable contact is intended to come into contact with power terminal heads, arranged in a contact chamber located at the rear of the contactor. This contactor is for example used to control the actuation of an electric motor of an internal combustion engine starter.

Plus précisément, un contacteur électromagnétique 1 montré sur les figures 1a à 1c est doté d'un noyau mobile 3, d'un noyau fixe 4 et d'un carter 6 métallique, ou cuve, dans lequel est agencée au moins une bobine 8 montée sur un support 9 annulaire isolant. Ce support 9 et l'extrémité avant du carter 6 sont dotés centralement d'un passage pour le noyau 3 mobile.More specifically, an electromagnetic contactor 1 shown on the Figures 1a to 1c has a movable core 3, a fixed core 4 and a metal housing 6, or tank, in which is arranged at least one coil 8 mounted on an insulating annular support 9. This support 9 and the front end of the casing 6 are centrally provided with a passage for the mobile core 3.

Une extrémité du noyau mobile 3 est reliée à un levier pivotant (non représenté) qui agit par exemple sur le lanceur du démarreur comme décrit dans le document FR2795884 . On voit ainsi le ressort dents contre dents 10 apte à être comprimé en cas de non pénétration directe du pignon du lanceur (non représenté) dans la couronne de démarrage reliée au moteur thermique et la tige de liaison 12 liée au levier pivotant.One end of the mobile core 3 is connected to a pivoting lever (not shown) which acts for example on the launcher of the starter as described in the document FR2795884 . Thus, the spring teeth against teeth 10 can be compressed in the event of direct non-penetration of the starter gear (not shown) in the starter ring connected to the heat engine and the connecting rod 12 connected to the pivoting lever.

L'autre extrémité du noyau mobile 3 est destinée à agir sur une extrémité avant d'une tige 15 de commande par poussée à travers un trou central 16 du noyau fixe 4 dans lequel la partie avant de la tige 15 est montée coulissante.The other end of the movable core 3 is intended to act on a front end of a thrust rod 15 through a central hole 16 fixed core 4 in which the front portion of the rod 15 is slidably mounted.

La tige de commande 15 porte une plaque de contact 21. La plaque de contact 21 s'étend transversalement par rapport à la tige 15 pour coopérer avec deux têtes 23, 24 de bornes 26, 27 électriques d'un circuit électrique de puissance et établir entre elles un contact électrique. L'une des bornes 26, 27 est destinée à être reliée à une borne positive de la batterie, l'autre borne étant destinée à être reliée par l'intermédiaire d'un câble à des balais du moteur électrique de polarité positive.The control rod 15 carries a contact plate 21. The contact plate 21 extends transversely with respect to the rod 15 to cooperate with two heads 23, 24 of electrical terminals 26, 27 of an electrical power circuit and to establish between them an electrical contact. One of the terminals 26, 27 is intended to be connected to a positive terminal of the battery, the other terminal being intended to be connected by means of a cable to the brushes of the electric motor of positive polarity.

Les deux bornes 26, 27 sont fixes et portées par un capot 30 en matière électriquement isolante assurant la fermeture de l'arrière de la cuve 6. La fixation du capot 30 est réalisée par rabattement de matière de l'extrémité libre de la cuve 6 sur le capot 30. Les têtes 23, 24 des bornes de puissance sont agencées dans une chambre de contact 41 délimitée par une paroi 40 du capot 30.The two terminals 26, 27 are fixed and carried by a cover 30 of electrically insulating material ensuring the closing of the rear of the tank 6. The attachment of the cover 30 is made by folding the material of the free end of the tank 6 on the cover 30. The heads 23, 24 of the power terminals are arranged in a contact chamber 41 defined by a wall 40 of the cover 30.

La tige 15 porte un ressort 32 axial d'écrasement agencé entre un épaulement 33 de la tige 15 de commande et une face du contact mobile 21. Le contacteur 1 comporte également un ressort 38 de rappel agencé entre le capot 30 et une butée de la tige 15 de commande.The rod 15 carries an axial compression spring 32 arranged between a shoulder 33 of the control rod 15 and a face of the movable contact 21. The switch 1 also comprises a return spring 38 arranged between the cover 30 and a stop of the control rod.

Le noyau 3 mobile est initialement dans une position, dite position de repos, dans laquelle le noyau 3 est éloigné du noyau 4 fixe. Lorsqu'un démarrage du moteur thermique est commandé, la bobine 8 est activée électriquement et crée alors un champ magnétique. Ce champ magnétique permet le déplacement axial du noyau mobile 3 en direction du noyau fixe 4. L'extrémité arrière du noyau mobile 3 entre en contact avec l'extrémité avant de la tige de commande 15 puis déplace axialement la tige 15 à travers le trou 16 en direction de l'arrière du contacteur 1. Le déplacement de la tige 15 a pour effet de comprimer le ressort 38 de rappel jusqu'à ce que le contact mobile 21 entre en contact avec les têtes 23, 24 des bornes 26, 27 électriques. Le contacteur 1 se trouve alors dans une position dite de contact électrique visible sur la figure 1b, la plaque de contact 21 étant dans une position dite "active". Ensuite, le ressort 32 axial d'écrasement est comprimé jusqu'à ce que le noyau mobile 3 entre en contact avec le noyau fixe 4. Le noyau mobile 3 est alors en position aimantée visible à la figure 1c. Ce contact entre la face arrière de la plaque 21 et les têtes 23, 24 des bornes 26, 27 électriques permet d'alimenter électriquement le moteur électrique du démarreur.The mobile core 3 is initially in a position, called the rest position, in which the core 3 is remote from the fixed core 4. When starting the heat engine is controlled, the coil 8 is electrically activated and then creates a magnetic field. This magnetic field allows the axial displacement of the movable core 3 towards the fixed core 4. The rear end of the movable core 3 comes into contact with the front end of the control rod 15 and then axially moves the rod 15 through the hole 16 towards the rear of the switch 1. The displacement of the rod 15 has the effect of compressing the return spring 38 until the movable contact 21 comes into contact with the heads 23, 24 of the terminals 26, 27 electric. The contactor 1 is then in a so-called electrical contact position visible on the figure 1b , the contact plate 21 being in a position called "active". Then, the axial compression spring 32 is compressed until the movable core 3 comes into contact with the fixed core 4. The mobile core 3 is then in the magnetized position visible to the figure 1c . This contact between the rear face of the plate 21 and the heads 23, 24 of the electric terminals 26, 27 makes it possible to power the electric motor of the starter electrically.

Lors de la mise hors tension de la bobine 8, cette bobine 8 ne crée plus de champ magnétique et le noyau mobile 3 n'est plus attiré vers le noyau fixe 4, ce qui provoque un retour du noyau mobile 3 dans la position de repos via l'action d'un ressort 39 positionné entre la cuve 6 et une extrémité du noyau mobile 3. Le ressort 32 axial d'écrasement puis le ressort 38 de rappel se décomprime, ce qui a pour effet d'éloigner la plaque de contact 21 des têtes de borne 23, 24 pour couper le contact entre les deux bornes de puissance 26 et 27. La plaque de contact 21 se trouve alors en position désactive.When the coil 8 is de-energized, this coil 8 no longer creates a magnetic field and the mobile core 3 is no longer attracted towards the fixed core 4, which causes the mobile core 3 to return to the rest position via the action of a spring 39 positioned between the tank 6 and an end of the movable core 3. The axial spring 32 crushing and the spring 38 return decompresses, which has the effect of moving the contact plate 21 of the terminal heads 23, 24 to cut the contact between the two power terminals 26 and 27. The contact plate 21 is then in the off position.

Au cours de sa fabrication ainsi que dans l'environnement moteur, le démarreur est exposé à la présence d'impuretés telles que des salissures, du liquide (eau, liquide de frein) ou de la glace, susceptibles de s'introduire dans la chambre de contacts 41. Cela peut entraîner des problèmes d'isolation entre la plaque de contact 21 et les bornes de puissance 26, 27 lorsque la plaque de contact 21 se trouve en position désactive.During its manufacture as well as in the engine environment, the starter is exposed to the presence of impurities such as dirt, liquid (water, brake fluid) or ice, likely to enter the chamber This can lead to insulation problems between the contact plate 21 and the power terminals 26, 27 when the contact plate 21 is in the off position.

En outre, il n'est possible de valider le fonctionnement de la chambre de contacts 41 qu'après assemblage du support 30 avec la cuve 6. En conséquence, les éventuels dysfonctionnements ne pourront être détectés que tardivement au cours du processus de fabrication. De plus, en cas de problème, il sera nécessaire de démonter le support 30 par rapport à la cuve 6 pour remplacer la chambre de contacts 41, ce qui rend cette opération particulièrement longue à réaliser.In addition, it is possible to validate the operation of the contact chamber 41 after assembly of the support 30 with the tank 6. As a result, any malfunctions can be detected only later in the manufacturing process. In addition, in case of problems, it will be necessary to disassemble the support 30 relative to the tank 6 to replace the contact chamber 41, which makes this operation particularly long to achieve.

OBJET DE L'INVENTIONOBJECT OF THE INVENTION

L'invention vise à remédier efficacement à au moins un de ces inconvénients en proposant un contacteur électromagnétique de démarreur de véhicule automobile comportant au moins deux bornes de puissance, une plaque de contact, et un noyau mobile apte à générer le déplacement de ladite plaque de contact d'une position désactive dans laquelle la plaque de contact coupe le contact entre les deux bornes de puissance à une position active dans laquelle la plaque de contact établit un contact entre les deux bornes de puissance, dans lequel la plaque de contact est en permanence en contact avec une des bornes de puissance dans la position active et dans la position désactive.The invention aims to effectively remedy at least one of these drawbacks by proposing an electromagnetic starter contactor of a motor vehicle having at least two power terminals, a contact plate, and a movable core capable of generating the displacement of said contact of a disabling position in which the contact plate cuts the contact between the two power terminals to an active position in wherein the contact plate makes contact between the two power terminals, wherein the contact plate is permanently in contact with one of the power terminals in the active position and in the deactivated position.

Ainsi, en maintenant un contact électrique entre la plaque de contact et une des bornes dans la position désactive et dans la position active, on divise par deux les risques de dysfonctionnement de la chambre de contacts dus aux impuretés susceptibles de s'introduire entre les bornes de puissance et la plaque de contact.Thus, by maintaining an electrical contact between the contact plate and one of the terminals in the deactivated position and in the active position, the risks of malfunction of the contact chamber due to the impurities likely to be introduced between the terminals are halved. power and the contact plate.

Le noyau mobile est mobile entre une position repos à une position aimantée, dans lequel le noyau mobile génère le déplacement de ladite plaque de contact pour établir le contact entre les deux bornes lorsqu'il passe de sa position repos vers sa position aimantée et en ce que le retour du noyau mobile vers sa position de repos permet à la plaque de contact de couper le contact électrique.The movable core is movable between a rest position at a magnetized position, wherein the movable core generates the displacement of said contact plate to establish contact between the two terminals when it moves from its rest position to its magnetized position and in that that the return of the movable core to its rest position allows the contact plate to cut the electrical contact.

Selon une réalisation, la plaque de contact est réalisée dans un matériau déformable en sorte que lors de son passage de la position désactive à la position active, ladite plaque de contact est apte à entrer en contact avec l'autre borne de puissance suite à une déformation engendrée par un déplacement du noyau mobile, ladite plaque de contact reprenant ensuite sa forme initiale en position désactive.According to one embodiment, the contact plate is made of a deformable material so that during its passage from the deactivated position to the active position, said contact plate is able to come into contact with the other power terminal following a deformation generated by a displacement of the movable core, said contact plate then returning to its initial form in the deactivated position.

Un tel mode de réalisation permet d'avoir un contacteur muni d'un nombre de pièce inférieure aux nombres de pièce dans l'art antérieur. En effet, le fait que la plaque de contact soit déformable permet d'enlever le ressort de contact de l'art antérieur permettant de permettre au noyau mobile de finir sa course vers la position finale tout en ayant un contact électrique entre les bornes par le biais de la plaque de contact.Such an embodiment makes it possible to have a contactor provided with a number of pieces that is smaller than the part numbers in the prior art. Indeed, the fact that the contact plate is deformable allows to remove the contact spring of the prior art to allow the movable core to finish its race to the final position while having an electrical contact between the terminals by the through the contact plate.

Selon un mode de réalisation, la plaque de contact est en matériaux élastique déformable et est agencé pour permettre de ramener la tige de commande vers la position de repos lorsque le noyau mobile retourne vers la position initiale.According to one embodiment, the contact plate is made of deformable elastic material and is arranged to allow the rod of control to the home position when the movable core returns to the home position.

Selon une réalisation, le noyau mobile engendre la déformation de ladite plaque de contact par le biais d'une tige de commande.In one embodiment, the movable core causes the deformation of said contact plate by means of a control rod.

Selon une réalisation, ladite plaque de contact est fixée par sertissage à la borne de puissance avec laquelle ladite plaque de contact est en contact dans la position désactive et dans la position active.According to one embodiment, said contact plate is crimped to the power terminal with which said contact plate is in contact in the deactivated position and in the active position.

Le sertissage permet d'avoir un contact électrique simple et sûr entre cette borne et la plaque de contact.The crimping makes it possible to have a simple and safe electrical contact between this terminal and the contact plate.

Selon une réalisation, ladite plaque de contact est montée coulissante par rapport à la borne de puissance avec laquelle ladite plaque est en contact dans la position désactive et dans la position active.According to one embodiment, said contact plate is slidably mounted with respect to the power terminal with which said plate is in contact in the deactivated position and in the active position.

Ce mode de réalisation permet d'avoir une plaque de contact rigide.This embodiment makes it possible to have a rigid contact plate.

Selon une réalisation, un moyen élastique de rappel est positionné entre ladite plaque de contact et ladite borne de puissance de manière à solliciter ladite plaque de contact en position désactive lorsqu'aucun effort n'est appliqué sur ladite plaque de contact. Ce mode de réalisation permet d'une part de revenir à l'état initial par le biais du ressort lorsque le noyau mobile retourne vers sa position de repos.According to one embodiment, an elastic return means is positioned between said contact plate and said power terminal so as to urge said contact plate in the off position when no force is applied to said contact plate. This embodiment makes it possible, on the one hand, to return to the initial state by means of the spring when the mobile core returns to its rest position.

Selon une réalisation, ladite plaque de contact comporte une pastille destinée à coopérer avec une tête de l'autre borne de puissance lorsque ladite plaque de contact est dans la position active.According to one embodiment, said contact plate comprises a pad intended to cooperate with a head of the other power terminal when said contact plate is in the active position.

Cela permet d'avoir une partie de la plaque qui comprend une matière non déformable pour assurer un bon contact électrique avec la borne en vis à vis.This allows to have a portion of the plate which comprises a non-deformable material to ensure good electrical contact with the terminal opposite.

Selon une réalisation, ladite pastille de ladite plaque de contact et la tête de la borne de puissance comportent des dentures de forme complémentaire.In one embodiment, said pad of said contact plate and the head of the power terminal have complementary shaped toothings.

Cela permet de casser la glace s'il y en a qui s'en ait formé. Selon une réalisation, ladite plaque de contact est configurée pour être en position active avant que le noyau mobile soit en position aimantée.This breaks the ice if there is any. In one embodiment, said contact plate is configured to be in the active position before the movable core is in the magnetized position.

Par position aimantée on entend la position finale dans laquelle le noyau mobile reste immobile, en générale le noyau est en butée contre un organe, en générale un noyau fixe. Cela permet de s'assurer qu'il y ait un contact électrique lorsque le noyau est en position aimantée.By magnetic position is meant the final position in which the movable core remains stationary, in general the core abuts against an organ, generally a fixed core. This ensures that there is electrical contact when the core is in the magnetized position.

Selon une réalisation, un capot comporte une paroi délimitant une chambre, dite chambre de contacts, à l'intérieur de laquelle sont positionnées des têtes des deux bornes de puissance ainsi que ladite plaque de contact, une membrane assurant une fermeture étanche de ladite chambre de contacts.According to one embodiment, a cover comprises a wall delimiting a chamber, called a contact chamber, inside which are positioned heads of the two power terminals as well as said contact plate, a membrane ensuring a tight closure of said chamber of contact. contact.

La chambre de contacts ainsi fermée par la membrane contenant la plaque de contact et les bornes de puissance forme un ensemble autonome dont le bon fonctionnement pourra être testé avant sa fixation avec la partie arrière de la cuve, ce qui procure un gain de temps en cas de dysfonctionnement par rapport aux systèmes de l'état de l'art.The contact chamber thus closed by the membrane containing the contact plate and the power terminals form an autonomous unit whose proper functioning can be tested before its attachment with the rear part of the tank, which saves time in case malfunction compared to state-of-the-art systems.

En outre, la membrane empêche la pénétration d'impuretés telles que des salissures, du liquide (eau, liquide de frein) ou de la glace, à l'intérieur de la chambre de contacts. On limite ainsi les risques de mauvaise isolation entre la plaque de contact et les bornes de puissance.In addition, the membrane prevents the penetration of impurities such as dirt, liquid (water, brake fluid) or ice inside the contact chamber. This limits the risk of poor insulation between the contact plate and the power terminals.

Selon une réalisation, la membrane comporte au moins une zone centrale réalisée dans un matériau déformable pour permettre le déplacement de ladite plaque de contact par l'action d'un élément extérieur au capot.According to one embodiment, the membrane comprises at least one central zone made of a deformable material to allow the displacement of said contact plate by the action of an element outside the hood.

Cela permet de limiter la modification du contacteur de l'art antérieur en permettant au noyau mobile de déplacer la plaque de contact.This limits the modification of the contactor of the prior art by allowing the movable core to move the contact plate.

Selon une réalisation, la membrane est réalisée entièrement dans un matériau déformable.In one embodiment, the membrane is made entirely of a deformable material.

Cela permet à l'axe de pousser sur la lame de contact tout en assurant l'étanchéité.This allows the shaft to push on the contact blade while sealing.

Selon une réalisation, la membrane comporte une première partie rigide fixée sur une extrémité du capot et une deuxième partie destinée à coopérer avec un élément extérieur à la chambre de contacts, ladite deuxième partie étant reliée à ladite première partie par l'intermédiaire d'un élément élastique.According to one embodiment, the membrane comprises a first rigid part fixed on one end of the cover and a second part intended to cooperate with an element external to the contact chamber, said second part being connected to said first part by means of a elastic element.

La partie rigide permet sa fixation aisée sur le capot par exemple par soudure aux ultrasons ou tout autre procédé.The rigid part allows its easy attachment to the cover, for example by ultrasonic welding or any other method.

Selon une réalisation, ladite plaque de contact est réalisée dans un alliage de cuivre et de béryllium. Cette alliage possède à la fois des propriétés d'élasticités et de conductibilités électriques.In one embodiment, said contact plate is made of a copper and beryllium alloy. This alloy has both properties of elasticity and electrical conductivity.

Une telle plaque de contact permet d'avoir des caractéristiques élastiques permettant l'invention.Such a contact plate makes it possible to have elastic characteristics allowing the invention.

L'invention a également pour objet le démarreur de véhicule automobile muni d'un contacteur selon l'invention.The invention also relates to the motor vehicle starter equipped with a contactor according to the invention.

BREVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

L'invention sera mieux comprise à la lecture de la description qui suit et à l'examen des figures qui l'accompagnent. Ces figures ne sont données qu'à titre illustratif mais nullement limitatif de l'invention.

  • Les figures 1 a à 1 c, déjà décrites, montrent des vues en coupe longitudinale d'un contacteur électromagnétique de démarreur selon l'état de la technique respectivement dans une position de repos, une position de contact électrique, et une position de collage magnétique;
  • Les figures 2a à 2c représentent des vues en coupe longitudinale d'un contacteur électromagnétique de démarreur selon l'invention respectivement dans une position de repos, une position de contact électrique, et une position de collage magnétique;
  • Les figures 3a et 3b montre une variante de réalisation de la membrane de fermeture de la chambre de contact selon l'invention lorsque la plaque de contact se trouve respectivement dans une position désactive et dans une position active;
  • Les figures 4a et 4b montrent un autre mode de réalisation selon l'invention de la liaison permanente entre la plaque de contact et une des bornes de puissance du contacteur;
  • Les figures 5a et 5b montrent un autre mode de réalisation selon l'invention du dispositif de guidage de la plaque de contact à l'intérieur de la chambre de contacts.
The invention will be better understood on reading the description which follows and on examining the figures which accompany it. These figures are given for illustrative but not limiting of the invention.
  • The figures 1 a 1 c, already described, show views in longitudinal section of a starter electromagnetic contactor according to the state of the art respectively in a rest position, an electrical contact position, and a magnetic bonding position;
  • The Figures 2a to 2c represent longitudinal sectional views of an electromagnetic starter contactor according to the invention respectively in a rest position, an electrical contact position, and a magnetic bonding position;
  • The Figures 3a and 3b shows an alternative embodiment of the closure membrane of the contact chamber according to the invention when the contact plate is respectively in a deactivated position and in an active position;
  • The Figures 4a and 4b show another embodiment according to the invention of the permanent connection between the contact plate and one of the power terminals of the contactor;
  • The Figures 5a and 5b show another embodiment according to the invention of the guiding device of the contact plate inside the contact chamber.

DESCRIPTION D'EXEMPLES DE REALISATION DE L'INVENTIONDESCRIPTION OF EXAMPLES OF EMBODIMENT OF THE INVENTION

Dans la description qui suit les éléments identiques, similaires, ou analogues conservent la même référence d'une figure à l'autre et on utilisera une orientation axiale d'avant en arrière correspondant à une orientation de gauche à droite conformément aux figures 2a-2c, 3a-3b, 4a-4b et 5a-5b.In the following description, identical, similar, or similar elements retain the same reference from one figure to another, and an axial orientation from front to back corresponding to a left-to-right orientation will be used in accordance with FIGS. Figures 2a-2c , 3a-3b , 4a-4b and 5a-5b .

Les figures 2a à 2c illustrent un contacteur 1 se montant en lieu et place du contacteur des figures 1a à 1 c. Ce contacteur 1 est par exemple utilisé pour commander l'actionnement d'un moteur électrique d'un démarreur de moteur à combustion interne. Le contacteur 1 est doté d'un noyau mobile 3, d'un noyau fixe 4, tous deux en matériau ferromagnétique, et d'un carter 6 métallique, appelé également cuve, dans lequel est agencée deux bobines (un bobine d'appel 81 et une bobine de maintien 82) montées sur un support annulaire isolant 9. Le support 9 est engagé sur une portée annulaire du noyau fixe 4.The Figures 2a to 2c illustrate a contactor 1 rising in place of the contactor of the Figures 1a to 1 vs. This contactor 1 is for example used to control the actuation of an electric motor of an internal combustion engine starter. The contactor 1 has a mobile core 3, a fixed core 4, both of ferromagnetic material, and a metal housing 6, also called tank, in which is arranged two coils (a call coil 81 and a holding coil 82) mounted on an insulating annular support 9. The support 9 is engaged on an annular bearing surface of the fixed core 4.

Ce support 9 et l'extrémité avant de la cuve 6 sont dotés centralement d'un passage pour le noyau mobile 3. La bobine d'appel 81, lorsqu'elle est activée électriquement commande le déplacement axial du noyau mobile 3 en direction du noyau fixe 4. Le noyau mobile 3 passe alors d'une position dite de repos dans laquelle ledit noyau mobile 3 est éloigné du noyau fixe 4 à une position dite aimantée dans laquelle le noyau mobile 3 est en contact avec le noyau fixe 4. La bobine de maintien 82 permet de maintenir le noyau mobile en position aimantée comme cela est expliqué plus en détails ci-après.This support 9 and the front end of the tank 6 are centrally provided with a passage for the movable core 3. The call coil 81, when electrically activated, controls the axial displacement of the mobile core 3 towards the core fixed 4. The mobile core 3 then moves from a so-called rest position in which said movable core 3 is moved away from the fixed core 4 to a so-called magnetized position in which the mobile core 3 is in contact with the fixed core 4. The coil holding means 82 keeps the movable core in the magnetized position as explained in more detail below.

Une extrémité avant du noyau mobile 3 est reliée à un levier pivotant (non représenté) qui agit par exemple sur le lanceur du démarreur comme décrit dans le document FR2795884 . On voit ainsi en 10 le ressort dents contre dents apte à être comprimé en cas de non pénétration directe du pignon du lanceur (non représenté) dans la couronne de démarrage reliée au moteur thermique et en 12 la tige de liaison au levier pivotant.A front end of the mobile core 3 is connected to a pivoting lever (not shown) which acts for example on the starter of the starter as described in the document FR2795884 . Thus, the spring teeth against teeth can be compressed in the event of direct non-penetration of the starter pinion (not shown) in the starter ring connected to the heat engine and in 12 the connecting rod to the pivoting lever.

La tige 12 et le ressort 10 sont montés à l'intérieur d'une cavité en matière électriquement isolante. L'autre extrémité du noyau mobile 3 est destinée à agir sur une extrémité avant d'une tige de commande 15 par poussée à travers un trou 16 central du noyau fixe 4 dans lequel la partie avant de la tige 15 est montée coulissante. Cette poussée de la tige 15 est effectuée lorsque le noyau mobile 3 passe de la position de repos à la position aimantée.The rod 12 and the spring 10 are mounted inside a cavity of electrically insulating material. The other end of the movable core 3 is intended to act on a front end of a control rod 15 by pushing through a central hole 16 of the fixed core 4 in which the front portion of the rod 15 is slidably mounted. This thrust of the rod 15 is performed when the movable core 3 moves from the rest position to the magnetized position.

Comme cela est bien visible sur les figures 2a à 2c, cette tige 15 comporte un épaulement 151. Cet épaulement 151 et une partie centrale de la tige 15 sont montés à l'intérieur d'une cavité du noyau fixe 4 fermée par une rondelle 17. La rondelle 17 est munie d'une ouverture centrale pour autoriser le passage de la partie arrière de la tige 15 dont l'extrémité entre en coopération avec une zone centrale 44 d'une membrane 43 décrite plus en détails ci-après. Un ressort de rappel 34 est monté d'une part en appui entre cet épaulement 151 et d'autre part en appui contre la rondelle 17 formant une butée.As is clearly visible on the Figures 2a to 2c , this rod 15 comprises a shoulder 151. This shoulder 151 and a central portion of the rod 15 are mounted inside a cavity of the fixed core 4 closed by a washer 17. The washer 17 is provided with a central opening to allow passage of the rear portion of the rod 15 whose end is in cooperation with a central zone 44 of a membrane 43 described in more detail below. A return spring 34 is mounted on the one hand bearing between this shoulder 151 and on the other hand bears against the washer 17 forming a stop.

Par ailleurs, deux bornes de puissance 26 et 27 sont fixes et sont portées par un capot 30 en matériau électriquement isolant, Plus précisément, le capot 30 comporte une paroi 40 délimitant une chambre de contacts 41 à l'intérieur de laquelle sont situées les têtes 23, 24 des bornes de puissance et une plaque de contact 21. Une des bornes 26 est destinée à être reliée à la borne positive de la batterie, tandis que l'autre borne 27 est destinée à être reliée au moteur électrique du démarreur comme décrit par exemple dans le document FR2795884 précité. En l'occurrence, les bornes de puissance 26, 27 traversent axialement de part en part le fond de la chambre 41, en sorte que les têtes 23, 24 des bornes sont plaquées contre le fond de la chambre 41, la partie arrière des bornes de puissance 26, 27 dépassant par rapport au fond de la chambre 41 pour permettre de réaliser respectivement les connexions avec la borne positive de la batterie et la borne positive des balais du moteur électrique du démarreur.Moreover, two power terminals 26 and 27 are fixed and are carried by a cover 30 of electrically insulating material. More specifically, the cover 30 has a wall 40 delimiting a contact chamber 41 inside which the heads are located. 23, 24 of the power terminals and a contact plate 21. One of the terminals 26 is intended to be connected to the positive terminal of the battery, while the other terminal 27 is intended to be connected to the electric motor of the starter as described. for example in the document FR2795884 supra. In this case, the power terminals 26, 27 pass axially right through the bottom of the chamber 41, so that the heads 23, 24 of the terminals are pressed against the bottom of the chamber 41, the rear part of the terminals. power 26, 27 protruding from the bottom of the chamber 41 to allow respectively to make the connections with the positive terminal of the battery and the positive terminal of the brushes of the electric motor of the starter.

La membrane 43 assure une fermeture étanche de la chambre de contacts 41. Cette membrane 43 est située du côté ouvert de la chambre 41 débouchant du côté du noyau fixe 4. La membrane 43 comporte au moins une zone centrale 44 réalisée dans un matériau déformable pour permettre le déplacement de la plaque de contact 21 par l'action de la tige de commande 15 via ladite zone centrale 44. En l'occurrence, la zone centrale 44 présente une forme concave coopérant avec l'extrémité de la tige de commande 15. En variante, la membrane 43 est entièrement réalisée dans un matériau déformable. En variante, comme cela est visible sur les figures 3a et 3b, la membrane 43 comporte une première partie rigide 46 fixée sur une extrémité libre du capot 30 et une deuxième partie 47 centrale destinée à coopérer avec l'extrémité arrière de la tige de commande 15. La deuxième partie 47 est reliée à la première partie 46 par l'intermédiaire d'un élément élastique 48 de manière à permettre le déplacement de la deuxième partie 47 par rapport à la première partie 46 lorsque la tige de commande 15 vient en contact avec la plaque de contact 21 pour la déplacer par l'intermédiaire de la deuxième partie 47. La première et la deuxième parties 46, 47 pourront par exemple être réalisées dans un matériau métallique. Suivant le mode de réalisation, la membrane 43 pourra être fixée sur l'extrémité libre du support 30 par soudage, sertissage, collage ou toute autre technique de fixation adaptée.The membrane 43 ensures a sealed closure of the contact chamber 41. This membrane 43 is located on the open side of the chamber 41 opening towards the fixed core 4. The membrane 43 comprises at least a central zone 44 made of a deformable material to allow the displacement of the contact plate 21 by the action of the control rod 15 via said central zone 44. In this case, the central zone 44 has a concave shape cooperating with the end of the control rod 15. Alternatively, the membrane 43 is entirely made of a deformable material. Alternatively, as is visible on the Figures 3a and 3b , the membrane 43 comprises a first rigid portion 46 fixed on a free end of the cover 30 and a second central portion 47 intended to cooperate with the rear end of the control rod 15. The second portion 47 is connected to the first portion 46 via a resilient member 48 so as to allow movement of the second portion 47 relative to the first portion 46 when the control rod 15 comes into contact with the contact plate 21 to move it through of the second part 47. The first and second parts 46, 47 may for example be made of a metallic material. According to the embodiment, the membrane 43 may be fixed on the free end of the support 30 by welding, crimping, gluing or any other suitable fastening technique.

La chambre de contacts 41 ainsi fermée par la membrane 43 contenant la plaque de contact 21 et les bornes de puissance 26, 27 forme un ensemble autonome dont le bon fonctionnement pourra être testé avant sa fixation avec la partie arrière de la cuve 6, ce qui procure un gain de temps en cas de dysfonctionnement par rapport aux systèmes de l'état de l'art précédemment décrits qui ne pouvaient être testés qu'après fixation du capot 30 avec la cuve 6 et qui nécessitaient donc un démontage de la chambre 41 en cas de détection d'un dysfonctionnement. En outre, la membrane 43 empêche la pénétration d'impuretés telles que des salissures, du liquide (eau, liquide de frein) ou de la glace, à l'intérieur de la chambre de contacts 41, ce qui limite les risques de mauvaise isolation entre la plaque de contact 21 et les bornes de puissance 26, 27.The contact chamber 41 thus closed by the membrane 43 containing the contact plate 21 and the power terminals 26, 27 forms an autonomous assembly whose proper functioning can be tested before its attachment with the rear part of the tank 6, which provides a time saving in the event of a malfunction compared to the systems of the state of the art described above which could only be tested after fixing the cover 30 with the tank 6 and which therefore required dismantling of the chamber 41 by case of detection of a malfunction. In addition, the membrane 43 prevents the penetration of impurities such as dirt, liquid (water, brake fluid) or ice, inside the contact chamber 41, which limits the risk of poor insulation between the contact plate 21 and the power terminals 26, 27.

En l'occurrence, une fois que le test vérifiant le bon fonctionnement de la chambre de contacts 41 a été effectué, la fixation de la chambre 41 sur le contacteur 1 est réalisée par rabattement de matière de l'extrémité libre de la cuve 6 sur le capot 30.In this case, once the test verifying the correct operation of the contact chamber 41 has been performed, the fixing of the chamber 41 on the contactor 1 is performed by folding the material of the free end of the tank 6 on the hood 30.

Dans le mode de réalisation des figures 2a à 2c, les bornes de puissance 26, 27 étant décalées axialement l'une par rapport à l'autre, une des bornes 26 est liée constamment, par exemple par sertissage, à la plaque de contact 21 réalisée dans un matériau déformable. La plaque de contact 21 pourra être réalisée par exemple dans un alliage de cuivre et de béryllium. La plaque de contact 21 est apte à passer d'une position désactive à une position active, et vice-versa. Dans la position désactive, la plaque de contact 21 est éloignée de la borne de puissance 27 de manière à couper le contact entre les deux bornes de puissance 26, 27. Dans la position active, la plaque de contact 21 établit un contact entre les deux bornes de puissance 26, 27 via les têtes de contact 23, 24. Le passage de la position désactive à la position active se produit suite à une déformation de la plaque de contact 21 engendrée par le déplacement du noyau mobile 3. Une pastille 49 portée par la plaque de contact 21 est destinée à coopérer avec la tête 24 de la borne 27 lorsque la plaque de contact 21 est dans la position active. En outre, la pastille 49 de la plaque de contact 21 et la tête 24 de la borne 27 comportent des dentures de forme complémentaire.In the embodiment of Figures 2a to 2c the power terminals 26, 27 being axially offset with respect to one another, one of the terminals 26 is constantly connected, for example by crimping, to the contact plate 21 made of a deformable material. The contact plate 21 may be made for example in a copper and beryllium alloy. The contact plate 21 is able to go from a deactivated position to an active position, and vice versa. In the deactivated position, the contact plate 21 is remote from the power terminal 27 so as to cut off the contact between the two power terminals 26, 27. In the active position, the contact plate 21 makes contact between the two power terminals 26, 27 via the contact heads 23, 24. The transition from the deactivated position to the active position occurs due to a deformation of the contact plate 21 generated by the displacement of the movable core 3. A pellet 49 reach by the contact plate 21 is intended to cooperate with the head 24 of the terminal 27 when the contact plate 21 is in the active position. In addition, the pellet 49 of the contact plate 21 and the head 24 of the terminal 27 comprise complementary-shaped toothings.

Plus précisément, lors du fonctionnement du contacteur 1, alors que le noyau mobile 3 est initialement en position de repos et que la plaque de contact 21 est en position désactive, le démarrage du moteur thermique est commandé, ce qui active électriquement la bobine d'appel 81. La bobine 81 crée alors un champ magnétique, ce qui génère le déplacement axial du noyau mobile 3 en direction du noyau fixe 4. L'extrémité arrière du noyau mobile 3 entre en contact avec l'extrémité avant de la tige 15 de manière à déplacer la tige 15 de commande à travers le trou 16 central du noyau fixe 4 en direction de la plaque de contact 21 tout en compressant le ressort de rappel 34. L'extrémité de la tige de commande 15 applique alors un effort sur la plaque de contact 21 via la zone centrale 44 de la membrane 43 qui se déforme. La tige 15 applique ainsi indirectement un effort sur la plaque de contact 21 qui va pouvoir se déformer pour établir un contact avec la borne de puissance 27 et passer ainsi en position active. Le contact entre la plaque de contact 21 et les têtes 23, 24 des bornes 26, 27 électriques permet ainsi d'alimenter électriquement le moteur électrique du démarreur. Le contacteur 1 se trouve alors dans la position dite de contact électrique montrée sur la figure 2b.More specifically, during operation of the contactor 1, while the movable core 3 is initially in the rest position and the contact plate 21 is in the deactivated position, the starting of the heat engine is controlled, which electrically activates the coil of 81. The coil 81 then creates a magnetic field, which generates the axial displacement of the movable core 3 towards the fixed core 4. The rear end of the movable core 3 comes into contact with the front end of the rod 15. in order to move the control rod 15 through the central hole 16 of the fixed core 4 towards the contact plate 21 while compressing the return spring 34. The end of the control rod 15 then applies a force on the contact plate 21 via the central zone 44 of the membrane 43 which is deformed. The rod 15 thus indirectly applies a force on the contact plate 21 which will be able to deform to make contact with the power terminal 27 and thus move to the active position. The contact between the contact plate 21 and the heads 23, 24 of the electric terminals 26, 27 thus makes it possible to electrically supply the electric motor of the starter. The contactor 1 is then in the so-called electrical contact position shown on the figure 2b .

Le ressort de rappel 34 continue d'être comprimé jusqu'à ce que le noyau mobile 3 entre en contact avec le noyau fixe 4. Le noyau mobile 3 est alors en position aimantée comme cela est montré en figure 2c. La compression du ressort 34 et la flexibilité de la plaque de contact 21 permettent le déplacement de la tige 15 après que le contact mobile 21 est entré en contact avec les têtes 23, 24. Le noyau mobile 3 est maintenu en position aimantée par l'alimentation de la bobine de maintien 82, l'alimentation de la bobine d'appel 81 étant coupée.The return spring 34 continues to be compressed until the movable core 3 comes into contact with the fixed core 4. The movable core 3 is then in the magnetized position as shown in FIG. Figure 2c . The compression of the spring 34 and the flexibility of the contact plate 21 allow the displacement of the rod 15 after the movable contact 21 has come into contact with the heads 23, 24. The movable core 3 is held in the magnetized position by the supply of the holding coil 82, the supply of the call coil 81 being cut off.

Lors de la mise hors tension de la bobine de maintien 82, cette bobine 82 ne crée plus de champ magnétique et le noyau mobile 3 n'est plus attiré vers le noyau fixe 4, ce qui entraîne un retour du noyau mobile 3 dans la position de repos via l'action du ressort 39. Le ressort de rappel 34 est alors décomprimé en sorte que la tige 15 se déplace axialement vers l'arrière du contacteur 1 jusqu'à ce que l'épaulement 151 entre en contact avec le fond de l'évidement du noyau fixe 4. La plaque de contact 21 qui n'est alors plus contrainte par la tige de commande 15 s'éloigne alors de la borne de puissance 27 de manière à reprendre sa forme initiale en position désactive. La membrane 43 qui n'est également plus contrainte par la tige 15 reprend également sa forme initiale. Alternativement, les bornes de puissance 26, 27 ne sont pas décalées axialement l'une par rapport à l'autre et c'est la plaque de contact 21 elle-même qui établit une liaison avec une des têtes 24 qui est légèrement surélevée par rapport à l'autre tête 23 de contact, comme cela est représenté aux figures 3a et 3b.When the holding coil 82 is turned off, this coil 82 no longer creates a magnetic field and the mobile core 3 is no longer attracted to the fixed core 4, which causes the mobile core 3 to return to the position resting by the action of the spring 39. The return spring 34 is then decompressed so that the rod 15 moves axially rearward of the switch 1 until the shoulder 151 comes into contact with the bottom of the the recess of the fixed core 4. The contact plate 21 which is no longer constrained by the control rod 15 then moves away from the power terminal 27 so as to return to its original form in the deactivated position. The membrane 43 which is also no longer constrained by the rod 15 also resumes its initial shape. Alternatively, the power terminals 26, 27 are not axially offset with respect to each other and it is the contact plate 21 itself which establishes a connection with one of the heads 24 which is slightly raised relative to to the other contact head 23, as shown in Figures 3a and 3b .

Les figures 4a et 4b montrent une variante de réalisation de la plaque de contact 21 et de sa liaison avec la borne 26 pouvant remplacer l'utilisation d'une plaque de contact 21 déformable. Plus précisément, la plaque de contact 21 qui est en l'occurrence une plaque rigide est montée sur la borne 26 via une liaison coulissante 54. Un moyen élastique de rappel 55 est positionné entre la plaque de contact 21 et la borne 26 de manière à solliciter la plaque de contact 21 dans la position désactive lorsqu'aucun effort n'est appliqué sur la plaque de contact 21 (cf. figure 4a). Un moyen de butée (non représenté) intégré à la liaison 54 permet de retenir axialement la plaque 21.The Figures 4a and 4b show an alternative embodiment of the contact plate 21 and its connection with the terminal 26 may replace the use of a deformable contact plate 21. More specifically, the contact plate 21 which is in this case a rigid plate is mounted on the terminal 26 via a sliding connection 54. An elastic return means 55 is positioned between the contact plate 21 and the terminal 26 so as to urging the contact plate 21 into the deactivated position when no force is applied to the contact plate 21 (cf. figure 4a ). An abutment means (not shown) integrated in the connection 54 makes it possible to retain the plate 21 axially.

Lors de l'actionnement du contacteur 1, la tige de commande 15 déplacée par le noyau mobile 3 comme expliqué ci-dessus pourra alors venir en appui sur la plaque de contact 21 via la membrane 43 pour la déplacer en translation vers la deuxième borne de puissance 27 et la faire ainsi passer en position active. Cela a pour effet de comprimer le moyen élastique 55. Le ressort de rappel 34 est également comprimé entre l'épaulement 151 et la rondelle 17. Le contacteur 1 se trouve alors dans la position montrée à la figure 4b.When actuating the contactor 1, the control rod 15 moved by the movable core 3 as explained above can then bear on the contact plate 21 via the membrane 43 to move it in translation towards the second terminal of power 27 and make it go into the active position. This has the effect of compressing the elastic means 55. The return spring 34 is also compressed between the shoulder 151 and the washer 17. The switch 1 is then in the position shown in FIG. figure 4b .

Lorsque le noyau mobile 3 revient en position de repos suite à la coupure de l'alimentation des bobines 81, 82, le ressort de rappel 34 se décomprime, ce qui a pour effet de faire revenir la tige 15 en position initiale. La tige 15 n'applique alors plus d'effort sur la plaque de contact 21 qui revient en position désactive suite à l'action du moyen élastique 55 qui éloigne la plaque 21 de la borne 27 (cf. figure 4a).When the movable core 3 returns to the rest position following the power failure of the coils 81, 82, the return spring 34 decompresses, which has the effect of returning the rod 15 to the initial position. The rod 15 then applies more force on the contact plate 21 which returns to the disengaged position due to the action of the elastic means 55 which moves the plate 21 away from the terminal 27 (cf. figure 4a ).

Les figures 5a et 5b montrent un autre mode de réalisation dans lequel la plaque de contact 21 est montée sur une deuxième tige de commande 60 pouvant coulisser à l'intérieur d'un guide 61.The Figures 5a and 5b show another embodiment in which the contact plate 21 is mounted on a second control rod 60 slidable inside a guide 61.

Cette tige de commande 60 porte en outre un deuxième ressort de rappel 62 agencé entre la plaque de contact 21 et une extrémité avant du guide 61. Le ressort 62 est prévu pour maintenir la plaque de contact 21 en appui sur une rondelle 63 formant butée à distance des têtes 23, 24 lorsqu'aucun effort n'est appliqué sur la deuxième tige de commande 60. Du côté de son extrémité arrière, une butée 64 est également prévue pour retenir la tige de commande 60 à l'intérieur du guide 61 lorsque la plaque de contact 21 est en position désactive.This control rod 60 further carries a second return spring 62 arranged between the contact plate 21 and a front end of the guide 61. The spring 62 is provided to hold the contact plate 21 in abutment on a washer 63 forming a stop. distance of the heads 23, 24 when no force is applied to the second control rod 60. On the side of its rear end, a stop 64 is also provided to retain the control rod 60 inside the guide 61 when the contact plate 21 is in the off position.

Lors de l'actionnement du contacteur 1, la première tige de commande 15 déplacée par le noyau mobile 3 comme expliqué ci-dessus pourra alors venir en appui via la membrane 43 sur l'extrémité avant de la deuxième tige de commande 60 pour la déplacer vers l'arrière. Cela a pour effet de déplacer la plaque de contact 21 en direction des bornes de puissance 26, 27 jusqu'à ce qu'elle vienne en contact avec les deux bornes de puissance 26, 27 en position active (cf. figure 5b). Le ressort 62 se comprime, tandis que la butée arrière 64 est éloignée de l'extrémité arrière du guide 61. Le ressort 34 est également comprimé suite au déplacement en translation de la tige 15. Le contacteur est agencé de manière à ce que un jeu existe entre la butée arrière 64 et le capot arrière lorsque la deuxième tige de commande est en position arrière, c'est-à-dire lorsque le noyau mobile est en position aimanté.When actuating the contactor 1, the first control rod 15 moved by the movable core 3 as explained above can then bear against the membrane 43 on the front end of the second control rod 60 to move it rearward. This has the effect of moving the contact plate 21 towards the power terminals 26, 27 until it comes into contact with the two power terminals 26, 27 in the active position (cf. figure 5b ). The spring 62 compresses, while the rear stop 64 is moved away from the rear end of the guide 61. The spring 34 is also compressed following displacement in translation of the rod 15. The switch is arranged so that there is a clearance between the rear stop 64 and the rear cover when the second control rod is in the rear position, that is to say say when the mobile core is in the magnetized position.

Lorsque le noyau mobile 3 revient en position de repos suite à la coupure de l'alimentation de la bobine de maintien 82, le ressort 34 se décomprime ce qui a pour effet de faire revenir la tige 15 en position initiale qui n'exerce plus d'effort axial sur la deuxième tige 60. Le ressort 62 se décomprime également et permet le retour de la plaque de contact 21 dans une position éloignée des deux bornes de puissance 26, 27 (position désactive) tandis que la butée arrière 64 de la deuxième tige 60 revient en appui contre l'extrémité arrière du guide 61, comme cela est illustré à la figure 5a.When the movable core 3 returns to the rest position following the interruption of the supply of the holding coil 82, the spring 34 decompresses, which causes the rod 15 to return to the initial position, which no longer exerts axial force on the second rod 60. The spring 62 also decompresses and allows the return of the contact plate 21 in a position remote from the two power terminals 26, 27 (disengaged position) while the rear stop 64 of the second rod 60 rests against the rear end of the guide 61, as shown in FIG. figure 5a .

Bien entendu, l'invention ne se limite pas aux modes de réalisations décrits précédemment, et elle trouve aussi à s'appliquer pour différentes formes de contacteurs 1 électromagnétiques de puissance. L'homme du métier aura ainsi compris que l'utilisation d'une chambre de contacts 41 fermée de manière étanche est indépendante de l'utilisation d'une plaque de contact 21 présentant toujours un contact avec une des bornes de puissance 26, 27 en position active et désactive de la plaque de contact 21 même si la combinaison de ces deux caractéristiques pourra faciliter la réalisation de la chambre de contacts 41.Of course, the invention is not limited to the embodiments described above, and it is also applicable to different forms of power electromagnetic contactors 1. Those skilled in the art will thus have understood that the use of a sealed contact chamber 41 is independent of the use of a contact plate 21 always having a contact with one of the power terminals 26, 27. active and inactive position of the contact plate 21 even if the combination of these two features may facilitate the realization of the contact chamber 41.

Par ailleurs, l'invention s'applique à tous les types de contacteurs 1 pour les moteurs électriques des démarreurs usuels de moteur à combustion interne. Ainsi, le contacteur 1 peut être implanté au-dessus du moteur électrique du démarreur comme dans le document FR2795884 . En variante, le contacteur 1 est déporté en étant par exemple implanté transversalement à l'arrière du moteur électrique du démarreur comme dans le document FR2843427 .Furthermore, the invention applies to all types of contactors 1 for electric motors of conventional starters internal combustion engine. Thus, the contactor 1 can be implanted above the electric motor of the starter as in the document FR2795884 . In a variant, the contactor 1 is offset by being, for example, implanted transversely to the rear of the electric motor of the starter, as in the document FR2843427 .

Le ressort 10 dents contre dents qui est comprimé en cas de non pénétration directe du pignon du lanceur dans la couronne de démarrage est implanté soit dans le contacteur 1 comme aux figures 1, 2, 4 et 5, soit à l'extérieur du contacteur 1 entre le lanceur et le levier d'actionnement comme à la figure 1 du document EP960276 . En variante, le contacteur 1 ne comporte qu'une bobine 81 comme décrit dans le document FR2795884 . En variante, un moteur électrique spécifique est prévu pour actionner le levier en sorte que le noyau mobile 3 est simplifié en étant dépourvu de moyens de liaison avec le levier. Le contacteur 1 selon l'invention peut appartenir à un relais de couplage de deux démarreurs agissant en parallèle.The spring 10 teeth against teeth which is compressed in case of non direct penetration of the starter gear in the starter ring is implanted either in the contactor 1 as in figures 1 , 2 , 4 and 5 , either outside the contactor 1 between the launcher and the actuating lever as in the figure 1 of the document EP960276 . In a variant, the contactor 1 comprises only a coil 81 as described in the document FR2795884 . Alternatively, a Specific electric motor is provided to actuate the lever so that the movable core 3 is simplified by being devoid of means for connection with the lever. The contactor 1 according to the invention can belong to a coupling relay of two starters acting in parallel.

Claims (15)

Contacteur électromagnétique (1) de démarreur de véhicule automobile comportant au moins deux bornes de puissance (26, 27), une plaque de contact (21), et un noyau mobile (3) apte à générer le déplacement de ladite plaque de contact (21) d'une position désactive dans laquelle la plaque de contact coupe le contact électrique entre les deux bornes de puissance (26, 27) à une position active dans laquelle la plaque de contact (21) établit un contact électrique entre les deux bornes de puissance (26, 27), dans lequel la plaque de contact (21) est en permanence en contact avec une des bornes de puissance (26) dans la position active et dans la position désactive.Electromagnetic motor vehicle starter contactor (1) having at least two power terminals (26, 27), a contact plate (21), and a movable core (3) adapted to generate the displacement of said contact plate (21). ) a deactivated position in which the contact plate cuts the electrical contact between the two power terminals (26, 27) to an active position in which the contact plate (21) makes an electrical contact between the two power terminals (26, 27), wherein the contact plate (21) is permanently in contact with one of the power terminals (26) in the active position and in the deactivated position. Contacteur selon la revendication 1, dans lequel le noyau mobile est mobile entre une position repos à une position aimantée, dans lequel le noyau mobile génère le déplacement de ladite plaque de contact pour établir le contact entre les deux bornes lorsqu'il passe de sa position repos vers sa position aimantée et en ce que le retour du noyau mobile vers sa position de repos permet à la plaque de contact de couper le contact électrique.The contactor according to claim 1, wherein the movable core is movable between a rest position at a magnetized position, wherein the movable core generates displacement of said contact plate to establish contact between the two terminals as it moves from its position. rest towards its magnetized position and in that the return of the movable core to its rest position allows the contact plate to cut the electrical contact. Contacteur selon la revendication 1 ou 2, dans lequel la plaque de contact (21) est réalisée dans un matériau déformable en sorte que lors de son passage de la position désactive à la position active, ladite plaque de contact (21) est agencé pour se déformer par un déplacement du noyau mobile (3),et en ce que la déformation de la plaque de contact est apte à entrer en contact avec l'autre borne de puissance (27) ladite plaque de contact (21) reprenant ensuite sa forme initiale en position désactive.Contactor according to claim 1 or 2, wherein the contact plate (21) is made of a deformable material so that during its transition from the deactivated position to the active position, said contact plate (21) is arranged to deforming by a displacement of the movable core (3), and in that the deformation of the contact plate is able to come into contact with the other power terminal (27), said contact plate (21) then resuming its initial shape in the off position. Contacteur selon la revendication 3, dans lequel le noyau mobile (3) engendre la déformation de ladite plaque de contact (21) par le biais d'une tige de commande (15).Contactor according to claim 3, wherein the movable core (3) causes the deformation of said plate of contact (21) via a control rod (15). Contacteur selon la revendication 3 ou 4, dans lequel ladite plaque de contact (21) est fixée par sertissage à l'une des deux bornes de puissance (26) avec laquelle ladite plaque de contact (21) est en contact dans la position désactive et dans la position active.A contactor according to claim 3 or 4, wherein said contact plate (21) is crimped to one of the two power terminals (26) with which said contact plate (21) is in contact in the disabling position and in the active position. Contacteur selon la revendication 1 ou 2, dans lequel ladite plaque de contact (21) est montée coulissante par rapport à l'une des deux bornes de puissance (26) avec laquelle ladite plaque est en contact (21) dans la position désactive et dans la position active.Contactor according to claim 1 or 2, wherein said contact plate (21) is slidably mounted with respect to one of the two power terminals (26) with which said plate is in contact (21) in the deactivated position and in the active position. Contacteur selon les revendications 5 et 2, dans lequel un moyen élastique de rappel est positionné entre ladite plaque de contact (21) et ladite borne de puissance (26) de manière à exercer une force sur ladite plaque de contact (21) vers la position désactive.Contactor according to claims 5 and 2, wherein an elastic return means is positioned between said contact plate (21) and said power terminal (26) so as to exert a force on said contact plate (21) to the position off. Contacteur selon l'une des revendications 1 à 7, dans lequel ladite plaque de contact (21) comporte une pastille (49) destinée à coopérer avec une tête de l'autre borne de puissance (27) lorsque ladite plaque de contact (21) est dans la position active.Contactor according to one of claims 1 to 7, wherein said contact plate (21) comprises a pad (49) intended to cooperate with a head of the other power terminal (27) when said contact plate (21) is in the active position. Contacteur selon la revendication 8, dans lequel ladite pastille (49) de ladite plaque de contact (21) et la tête (24) de la borne de puissance (27) comportent des dentures de forme complémentaire.Contactor according to claim 8, wherein said wafer (49) of said contact plate (21) and the head (24) of the power terminal (27) have teeth of complementary shape. Contacteur selon l'une des revendications 1 à 9, dans lequel ladite plaque de contact (21) est configurée pour être en position active avant que le noyau mobile (3) entre en contact avec un noyau fixe (4).Contactor according to one of claims 1 to 9, wherein said contact plate (21) is configured to be in the active position before the movable core (3) comes into contact with a fixed core (4). Contacteur selon l'une des revendications 1 à 10, dans lequel un capot (30) comporte une paroi (40) délimitant une chambre (41), dite chambre de contacts, à l'intérieur de laquelle sont positionnées des têtes des deux bornes de puissance (26, 27) ainsi que ladite plaque de contact (21), et dans lequel une membrane (43) assure une fermeture étanche de ladite chambre de contacts (41).Contactor according to one of claims 1 to 10, wherein a cover (30) has a wall (40) defining a chamber (41), said contact chamber, inside which are positioned heads of the two power terminals (26, 27) and said contact plate (21), and in which a membrane (43) provides a sealing of said contact chamber (41). Contacteur selon la revendication 11, dans lequel la membrane (43) comporte au moins une zone centrale (44) réalisée dans un matériau déformable pour permettre le déplacement de ladite plaque de contact (21) par l'action d'un élément extérieur au capot (30).Contactor according to claim 11, wherein the membrane (43) comprises at least one central zone (44) made of a deformable material to allow the displacement of said contact plate (21) by the action of an element outside the hood (30). Contacteur selon la revendication 11, dans lequel la membrane (43) comporte une première partie rigide (46) fixée sur une extrémité du capot (30) et une deuxième partie (47) destinée à coopérer avec un élément extérieur à la chambre de contacts (41), ladite deuxième partie (47) étant reliée à ladite première partie (46) par l'intermédiaire d'un élément élastique.Contactor according to claim 11, wherein the membrane (43) comprises a first rigid portion (46) fixed on one end of the cover (30) and a second portion (47) intended to cooperate with an element outside the contact chamber ( 41), said second portion (47) being connected to said first portion (46) via a resilient member. Contacteur selon l'une des revendications 1 à 13, dans lequel ladite plaque de contact (21) est réalisée dans un alliage de cuivre et de béryllium.Contactor according to one of claims 1 to 13, wherein said contact plate (21) is made of a copper alloy and beryllium. Démarreur de véhicule automobile muni d'un contacteur selon l'une des revendications précédentes.Motor vehicle starter with a contactor according to one of the preceding claims.
EP14187657.3A 2013-10-04 2014-10-03 Electromagnetic contactor for a starter of a motor vehicle and corresponding starter Not-in-force EP2858084B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1359643A FR3011676B1 (en) 2013-10-04 2013-10-04 ELECTROMAGNETIC MOTOR VEHICLE STARTER CONTACTOR AND CORRESPONDING STARTER

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EP2858084A1 true EP2858084A1 (en) 2015-04-08
EP2858084B1 EP2858084B1 (en) 2017-06-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3118279A1 (en) * 2020-12-18 2022-06-24 Valeo Equipements Electriques Moteur ELECTROMAGNETIC POWER CONTACTOR FOR A STARTER

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GB191414294A (en) * 1914-06-13 1915-07-13 Allen West Improvements in Electric Controllers.
DE4242930A1 (en) * 1992-12-18 1994-06-23 Bosch Gmbh Robert Engagement relay for starting devices
FR2768259A1 (en) * 1997-09-09 1999-03-12 Valeo Equip Electr Moteur Contact mechanism
EP0960276A1 (en) 1997-01-28 1999-12-01 Robert Bosch Gmbh Circuit for a latching relay
FR2795884A1 (en) 1999-06-30 2001-01-05 Valeo Equip Electr Moteur Contactor with variable closing effort, for automobile starter, has maximum effort, applied initially, reduced after plunger movement begins, regulating coil current by PWM technique
FR2843427A1 (en) 2002-07-03 2004-02-13 Valeo Equip Electr Moteur Electric starter motor for IC engine, includes standard contact and electric motor providing simple and cheap construction
WO2013093365A1 (en) * 2011-12-22 2013-06-27 Valeo Equipements Electriques Moteur Multi-contactor device, in particular for controlling an electric starter

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FR2340458A2 (en) * 1976-02-05 1977-09-02 Ducellier & Cie Contactor for electric starters on IC engines - has conducting disc on moving pole giving low or main current contacts

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GB191414294A (en) * 1914-06-13 1915-07-13 Allen West Improvements in Electric Controllers.
DE4242930A1 (en) * 1992-12-18 1994-06-23 Bosch Gmbh Robert Engagement relay for starting devices
EP0960276A1 (en) 1997-01-28 1999-12-01 Robert Bosch Gmbh Circuit for a latching relay
FR2768259A1 (en) * 1997-09-09 1999-03-12 Valeo Equip Electr Moteur Contact mechanism
FR2795884A1 (en) 1999-06-30 2001-01-05 Valeo Equip Electr Moteur Contactor with variable closing effort, for automobile starter, has maximum effort, applied initially, reduced after plunger movement begins, regulating coil current by PWM technique
FR2843427A1 (en) 2002-07-03 2004-02-13 Valeo Equip Electr Moteur Electric starter motor for IC engine, includes standard contact and electric motor providing simple and cheap construction
WO2013093365A1 (en) * 2011-12-22 2013-06-27 Valeo Equipements Electriques Moteur Multi-contactor device, in particular for controlling an electric starter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3118279A1 (en) * 2020-12-18 2022-06-24 Valeo Equipements Electriques Moteur ELECTROMAGNETIC POWER CONTACTOR FOR A STARTER

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EP2858084B1 (en) 2017-06-28
FR3011676B1 (en) 2015-11-13
FR3011676A1 (en) 2015-04-10

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