EP1029335A1 - Starting switch with mobile core comprising a directly mounted closure cup - Google Patents

Starting switch with mobile core comprising a directly mounted closure cup

Info

Publication number
EP1029335A1
EP1029335A1 EP99941684A EP99941684A EP1029335A1 EP 1029335 A1 EP1029335 A1 EP 1029335A1 EP 99941684 A EP99941684 A EP 99941684A EP 99941684 A EP99941684 A EP 99941684A EP 1029335 A1 EP1029335 A1 EP 1029335A1
Authority
EP
European Patent Office
Prior art keywords
magnetic core
cup
mobile magnetic
bore
rear end
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
EP99941684A
Other languages
German (de)
French (fr)
Other versions
EP1029335B1 (en
Inventor
Jean-François Quentric
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Equipements Electriques Moteur SAS
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
Publication date
Application filed by Valeo Equipements Electriques Moteur SAS filed Critical Valeo Equipements Electriques Moteur SAS
Publication of EP1029335A1 publication Critical patent/EP1029335A1/en
Application granted granted Critical
Publication of EP1029335B1 publication Critical patent/EP1029335B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles

Definitions

  • the invention relates to an electromagnetic actuator of a starter of a motor vehicle starter, also called starter contactor.
  • the invention relates more particularly to a starter contactor for a thermal engine, in particular for a motor vehicle, of the type comprising an annular coil, which surrounds a cylindrical magnetic core mounted to slide axially in a bore of the coil, of the type in which a rear section of the movable core protrudes axially outside the fixed coil, of the type in which an external return spring of the movable magnetic core is axially supported against an external radial flange added from the rear section of the movable magnetic core and the body of the coil , of the type in which the mobile magnetic core has an internal bore which opens at its rear end and which allows the passage of a coupling rod whose rear end is linked to an actuating lever of the starter pinion, which is biased elastically towards the front of the bore by an internal spring mounted axially compressed between a front shoulder surface of the coupling rod and rear shoulder surface of the movable magnetic core, and which is capable of bearing on a bottom before the bore to be driven in translation by the movable magnetic core of the starter
  • the magnetic field created by the electrical conductor wound around the body of the coil of a contactor follows field lines which are substantially axial inside the coil and which have the form of loops closing on them. - even outside the coil.
  • the mobile magnetic core is generally a piece of soft iron which, whatever its axial position in the bore of the coil, makes it possible to ensure the continuity of passage of the magnetic flux between the carcass and the magnetic core mobile.
  • the field lines close on themselves in the immediate vicinity of the coil, which increases the efficiency of one electromagnet and reduces the electrical power consumed by it.
  • the movable magnetic core is produced by turning as it has complex shapes such as a rear shoulder surface of the bore of the movable magnetic core, which is internal and forms a support for the internal spring of the coupling rod, or such as a front surface, arranged at the bottom of the bore of the movable magnetic core, and intended to receive a front plate closing the bore of the movable magnetic core after assembly of the components in one bore.
  • the invention proposes a mobile magnetic core comprising a rear shoulder surface of the bore. of the simplified movable magnetic core, and a simplified closure of the bottom of the bore.
  • the invention provides a starter contactor for a thermal engine, in particular for a motor vehicle, of the type comprising an annular coil, which surrounds a cylindrical magnetic core mounted to slide axially in a bore of the coil, of the type in which a section rear of the movable magnetic core protrudes axially outside the fixed coil, of the type in which an external return spring of the mobile magnetic core is in axial abutment against an external radial flange added from the rear section of the mobile magnetic core, of the type in which the mobile magnetic core has an internal bore which opens out at the rear end which is arranged in front of the flange and which allows the passage of a coupling rod, the rear end of which is linked to an actuating lever of the starter pinion, which is resiliently biased towards the front of the bore by an internal spring mounted axially compressed against a front shoulder surface of the coupling rod and a rear shoulder surface of the movable magnetic core, the front end of which is capable of bearing on a front bottom of the bore so as to be
  • the external flange is arranged at the rear end of the cup, and the shoulder surface of the bore of the movable magnetic core constitutes a front bottom of the cup, pierced for passage of the coupling rod, and which abuts axially forwards against the rear end face of the core body;
  • the outside diameter of the body of the cup is substantially equal to the diameter of the body of the mobile magnetic core, so that the cup extends axially towards the rear of the body of the mobile magnetic core;
  • the front bottom of the cup is welded to the rear end of the body of the mobile magnetic core;
  • the cup has at least two arms which extend axially forwards beyond the front bottom of the cup and facing the periphery of the mobile magnetic core;
  • the arms have at their front ends elbows which are folded radially towards the axis of the movable magnetic core; the arms are cut in the front bottom of the cup, and are folded at right angles;
  • the cup is crimped onto the mobile magnetic core by an axial crushing of the material of the rear end of the body of the mobile magnetic core, which forms a peripheral bead arranged axially between the rear end of the body of the mobile magnetic core and the elbows of the arms, so as to immobilize the arms axially;
  • the cup is crimped on the movable magnetic core by an axial crushing of the material of the periphery of the movable magnetic core, which causes, radially and outward, a reflux of material in holes which are arranged opposite in the arms;
  • FIG. 1 is an axial sectional view of a starter comprising a contactor according to the prior art
  • FIG. 2 is an axial sectional view of a movable magnetic core on which is welded a cup according to a first embodiment of the invention
  • Figure 3 is an axial sectional view of a movable magnetic core on which is crimped a cup according to a second embodiment of the invention
  • Figure 4 is a view according to Figure 3 showing, in a rear axial view, a cup according to the second embodiment of the invention
  • FIG. 5 is an axial sectional view of the cup of Figure 4.
  • FIG. 6 is an axial sectional view of a movable magnetic core on which is fitted a cup according to a third embodiment of the invention.
  • Figure 7 is a sectional view along line 7-7 of Figure 9 of a movable magnetic core on which is crimped a cup according to a fourth embodiment of the invention
  • Figure 8 is a detail F8 of Figure 7 showing the attachment of the cup arms on the movable magnetic core
  • FIG. 9 is a view along line 9-9 of Figure 10 showing in a rear axial view of the cup shown in Figure 7;
  • FIG. 10 is a view in axial section, on the line 10-10 of FIG. 9, of the cup shown in FIG. 7.
  • FIG. 1 shows a starter 10 intended to equip a combustion engine of a motor vehicle (not shown).
  • the starter 10 essentially consists of a casing 12 inside which a starter pinion 14 is arranged which is slidably mounted on one end of a shaft 16. The shaft 16 is rotated by an electric motor 18 of starter 10.
  • the sliding movements of the starter pinion 14 are caused by a lever or fork 20 which pivots inside the casing 12 around a horizontal geometric axis X-X.
  • the lower free end 22 of the control lever 20 acts on a drive 24 of the starter pinion 14 while its upper free end 25 is connected to a coupling rod 26 belonging to an electromagnetic contactor 30, which is arranged at the part starter upper 10.
  • the contactor 30 comprises a movable magnetic core 32 whose movements are controlled by a coil 34 along a horizontal axis YY perpendicular to the axis XX of pivoting of the lever 20.
  • the movable magnetic core 32 is a general part of hollow annular cylindrical shape which is guided in sliding by its external cylindrical surface and of which the internal bore 36 receives the coupling rod 26 and a helical compression spring 38.
  • the rear end 40 of the spring 38 bears against a rear shoulder surface 42 of the bore 36 of the movable magnetic core 32, and the front end 44 of the spring 38 bears against a front shoulder surface of the rod coupling 26, which is carried by a head 46 arranged at the free front end of the coupling rod 26.
  • the coupling rod 26 is capable of bearing, by means of its head 46, on a front bottom 48 consisting of a plate-shaped bore closing disc 36, which is crimped in a cylindrical housing 50 of the movable magnetic core 32, the coupling rod 26 being capable of being driven in translation along the axis YY and towards the rear by the movable magnetic core 32 during actuation or release of 1 electromagnet which is composed of the mobile magnetic core 32 and the coil 34.
  • the annular rear shoulder surface 42 is made integrally with the body of the movable magnetic core 32, and the rear end 52 of the movable magnetic core 32, which projects axially rearward.
  • outside the fixed coil 34 has an attached cup 54, which is crimped on the rear end 52 of the movable magnetic core 32, and which has at its periphery a flange 56, which extends radially outwards, and which is intended to serve as a support for an external spring 58 for returning the movable magnetic core 32 to its rear rest position illustrated in FIG. 1.
  • the spring 58 resiliently returns the movable magnetic core 32 backwards by taking support between the collar 56 and the casing 31 of the contactor 30.
  • FIG. 2 illustrates a first embodiment of the invention in which a new attached cup 54 is arranged at the rear end 52 of the mobile magnetic core 32.
  • the mobile magnetic core 32 differs significantly from the mobile magnetic core previously described with reference to Figure 1, to the extent that the bore 36 of the movable core 32 opens at the rear of the mobile magnetic core 32 and is blind at the front.
  • the front bottom 48 of the bore 36 is no longer, as previously described with reference to the state of the art, constituted by an attached disc but it is made integrally with the body of the mobile magnetic core 32.
  • the tubular body of the attached cup 54 is externally of a diameter substantially equal to the diameter of the mobile magnetic core 32 and it comprises at its rear end the flange 56 previously described with reference to FIG. 1.
  • the bore 36 no longer has an internal rear annular face as previously described with reference to FIG. 1, but it opens into the annular rear free end face 52 of the core 32.
  • the rear radial shoulder of the bore 36 of the movable magnetic core 32 is constituted by a bottom 62 of the cup 54, including a central hole 60, of diameter greater than the diameter of the coupling rod 26, allows axial deflections and vertical of the coupling rod 26 when the rear end of the latter moves with the end 25 of the actuating lever 20.
  • the central part of the bottom 62 of the cup 54 which extends radially inwards opposite the bore 36 forms the rear annular shoulder surface 42 which allows the support of the internal spring 38 for returning the rod d 'coupling
  • the cup 54 therefore alone comprises the two surfaces 56 and 42 for supporting the external springs 58 for returning the movable magnetic core 32, and the internal 38 for returning the coupling rod 26.
  • the cup 54 is welded at the periphery of its bottom 62 at the periphery of the rear end 52 of the mobile magnetic core 32.
  • FIG. 3 illustrates a second embodiment in which the cup 54 is crimped at the rear end 52 of the mobile magnetic core 32.
  • the cup 54 has a shape generally similar to that described with reference to FIG. 2.
  • the tubular body of the cup 54 has a diameter slightly greater than the outside diameter of the mobile magnetic core 32 and it preferably comprises three arms 64, angularly distributed at regular intervals, which extend axially forwards so as to be adjacent the periphery of the movable magnetic core 32.
  • the arms 64 have at their front ends elbows 68 which have the function of centering the cup 54 on the body of the movable core 32.
  • the cup 54 can, for example, be produced by stamping.
  • the cup 54 can, at the time of its manufacture, be formed from a cup 54 similar to that described with reference to FIG. 2, in the bottom 62 from which are punched out three flat radial tabs which are subsequently folded perpendicularly and in the axial direction YY at the bottom 62 to form the arms 64 which extend axially forward.
  • the cup 54 is threaded onto the rear end 52 of the mobile magnetic core 32 until the bottom 62 of the cup 64 is axially in abutment against the rear end 52 of the mobile magnetic core 32
  • the rear end 52 of the mobile magnetic core 32 constitutes an axial stop towards the front for the cup 54.
  • the cup 54 is simultaneously held externally so as not to be able to deform radially outward.
  • a crimping tool then penetrates axially along the YY axis inside the cup 54 into the spaces left free by the cutting of the arms 64, which can more particularly be seen in FIG. 4, and crushes the end 52 of the movable magnetic core, forming axially opposite the arms 64 of the cup 54 a bead 66 of material of the mobile magnetic core 32, which allows the axial immobilization towards the rear of the arms 64 of the cup 54 relative to the mobile magnetic core 32.
  • the cup 54 is moreover immobilized axially towards the front by means of its bottom 62 resting on the rear end 52 of the mobile magnetic core 32, it is rigidly linked to the mobile magnetic core 32.
  • FIG. 6 illustrates a third embodiment in which the cup 54 is not crimped but fitted by force onto the rear end 52 of the movable magnetic core 32.
  • the cup 54 is substantially similar to the cup 54 described with reference to the Figure 3, and it is provided with three arms 64 angularly distributed at regular intervals which extend axially forwardly in contact with the periphery of the movable magnetic core 32.
  • the arms 64 have at their front end bends 68 which are folded down radially towards the axis YY of the mobile magnetic core 32 and which are, in this embodiment, capable of being received in an external radial groove 70 produced at the periphery of the mobile magnetic core 32.
  • the cup 54 is threaded axially on the mobile magnetic core 32 while temporarily deforming towards the outside the arms 64, then the elbows 68 of the arms 64 of the cup 54 penetrate into the groove 70 of the movable magnetic core 32 thus ensuring its axial immobilization, the bottom 62 of the cup 54 coming into contact with the rear end 52 of the core mobile magnetic 32 for perfecting the axial immobilization of the cup 54 and determining a precise axial position of the cup 54 relative to the core 32.
  • FIGS. 7 to 10 illustrate a fourth embodiment in which the cup comprises two diametrically opposite axial arms which are fixed to the mobile magnetic core 32.
  • the cup 54 comprises two arms 64, which extend axially towards the front and which have substantially the shape of an arc of a circle in a transverse plane perpendicular to the YY axis.
  • the arms 64 each have two holes 71 located in this same transverse plane, and which are intended to cooperate with the body of the movable magnetic core 32 during crimping to immobilize the cup 54 relative to the movable magnetic core 32.
  • the cup 54 can for example be produced by stamping, or by punching and folding, the arms 64 being cut beforehand in the bottom 62 of the cup 54, then folded perpendicularly to the latter so that once the cup 54 in position on the mobile magnetic core 32, these extend axially towards the front by following the periphery of the mobile magnetic core 32.
  • the cup 54 When assembling the cup 54 on the mobile magnetic core 32, the cup 54 is threaded axially on the mobile magnetic core 32 until its bottom 62 abuts on the rear end 52 of the mobile magnetic core 32 .
  • the cup 54 is retained on its outer periphery by an appropriate template to prevent it from being deformed during the crimping operation. Then a crimping tool penetrates inside the concavity of the cup 54 into the interstices left free by the cutting of the arms 64 and crushes the rear end 52 of the mobile magnetic core 32 so that the material of the mobile magnetic core 32 is driven radially outwards and enters the holes 71 of the cup 54, immobilizing it axially towards the rear, as shown in the detail view of FIG. 8.
  • the various mobile magnetic contactor cores 30 thus produced make it possible to significantly reduce production costs.

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

Abstract

The invention concerns a heat engine starting switch comprising a coil, in a bore wherein slides a magnetic core (32), of the type wherein an outer return spring (58) presses axially against a directly mounted external flange (56) of the core (32), and wherein an internal bore (36) of the core (32) emerges at its rear end (52) to form a rear shoulder surface (42) supporting an inner return spring (38) of a link rod of a lever actuating a driving pinion, which rod (26) passes through the rear end (52) of the core (32), and is capable of pressing against a front base (48) of the bore (36) to be driven by the core (32). The invention is characterised in that the front base (48) is made in one piece with the core (36), and a cup (54) directly mounted at the rear end (52) comprises the rear shoulder surface (42) of the bore (36) and the external flange (56).

Description

Contacteur de démarreur à noyau mobile comportant une coupelle rapportée de fermeture Movable core starter contactor with a closed closing cup
L'invention concerne un actionneur électromagnétique d'un lanceur d'un démarreur de véhicule automobile, aussi appelé contacteur du démarreur.The invention relates to an electromagnetic actuator of a starter of a motor vehicle starter, also called starter contactor.
L'invention concerne plus particulièrement un contacteur de démarreur de moteur thermique, notamment de véhicule automobile, du type comportant une bobine annulaire, qui entoure un noyau magnétique cylindrique monté coulissant axialement dans un alésage de la bobine, du type dans lequel un tronçon arrière du noyau mobile fait saillie axialement à l'extérieur de la bobine fixe, du type dans lequel un ressort externe de rappel du noyau magnétique mobile est en appui axial contre une collerette radiale extérieure rapportée du tronçon arrière du noyau magnétique mobile et le corps de la bobine, du type dans lequel le noyau magnétique mobile comporte un alésage intérieur qui débouche à son extrémité arrière et qui permet le passage d'une tige d'attelage dont l'extrémité arrière est liée à un levier d'actionnement du pignon de lanceur, qui est rappelée élastiquement vers l'avant de l'alésage par un ressort interne monté comprimé axialement prenant entre une surface avant d'épaulement de la tige d'attelage et une surface d'épaulement arrière du noyau magnétique mobile, et qui est susceptible de prendre appui sur un fond avant de l'alésage pour être entraînée en translation par le noyau magnétique mobile du démarreur.The invention relates more particularly to a starter contactor for a thermal engine, in particular for a motor vehicle, of the type comprising an annular coil, which surrounds a cylindrical magnetic core mounted to slide axially in a bore of the coil, of the type in which a rear section of the movable core protrudes axially outside the fixed coil, of the type in which an external return spring of the movable magnetic core is axially supported against an external radial flange added from the rear section of the movable magnetic core and the body of the coil , of the type in which the mobile magnetic core has an internal bore which opens at its rear end and which allows the passage of a coupling rod whose rear end is linked to an actuating lever of the starter pinion, which is biased elastically towards the front of the bore by an internal spring mounted axially compressed between a front shoulder surface of the coupling rod and rear shoulder surface of the movable magnetic core, and which is capable of bearing on a bottom before the bore to be driven in translation by the movable magnetic core of the starter .
De manière connue, le champ magnétique créé par le conducteur électrique enroulé autour du corps de la bobine d'un contacteur suit des lignes de champ qui sont sensiblement axiales à l'intérieur de la bobine et qui présentent la forme de boucles se refermant sur elles-mêmes à l'extérieur de la bobine.In a known manner, the magnetic field created by the electrical conductor wound around the body of the coil of a contactor follows field lines which are substantially axial inside the coil and which have the form of loops closing on them. - even outside the coil.
Selon une conception connue, le noyau magnétique mobile est généralement une pièce de fer doux qui, quelle que soit sa position axiale dans l'alésage de la bobine, permet d'assurer la continuité de passage du flux magnétique entre la carcasse et le noyau magnétique mobile. Ainsi, les lignes de champ se referment sur elles-mêmes au voisinage immédiat de la bobine, ce qui permet d'augmenter le rendement de 1 ' électroaimant et de réduire la puissance électrique consommée par celui-ci.According to a known design, the mobile magnetic core is generally a piece of soft iron which, whatever its axial position in the bore of the coil, makes it possible to ensure the continuity of passage of the magnetic flux between the carcass and the magnetic core mobile. Thus, the field lines close on themselves in the immediate vicinity of the coil, which increases the efficiency of one electromagnet and reduces the electrical power consumed by it.
Conventionnellement, le noyau magnétique mobile est réalisé par décolletage car il présente des formes complexes telles qu'une surface d'épaulement arrière de l'alésage du noyau magnétique mobile, intérieure et formant appui pour le ressort interne de la tige d'attelage, ou telles qu'une surface avant, agencée au fond de l'alésage du noyau magnétique mobile, et destinée à recevoir une plaque avant fermant l'alésage du noyau magnétique mobile après assemblage des composants dans 1 'alésage.Conventionally, the movable magnetic core is produced by turning as it has complex shapes such as a rear shoulder surface of the bore of the movable magnetic core, which is internal and forms a support for the internal spring of the coupling rod, or such as a front surface, arranged at the bottom of the bore of the movable magnetic core, and intended to receive a front plate closing the bore of the movable magnetic core after assembly of the components in one bore.
Ce type de fabrication rend cette pièce coûteuse dans le cadre d'une production en grande série.This type of manufacturing makes this part expensive in the context of mass production.
Selon une conception connue, il a déjà été proposé de rapporter à la face arrière du noyau magnétique mobile une coupelle comportant une collerette extérieure rapportée de façon à simplifier les formes du noyau magnétique mobile. Cette conception, si elle simplifie en partie le noyau magnétique mobile, ne permet toutefois pas de réaliser la surface d'épaulement arrière de l'alésage du noyau magnétique mobile et la surface avant destinée à recevoir la plaque de fermeture selon un procédé autre que le décolletage, et la fabrication du noyau magnétique mobile demeure coûteuse, la collerette extérieure n'étant pas une forme réalisable par décolletage et devant de préférence être une pièce rapportée.According to a known design, it has already been proposed to attach to the rear face of the movable magnetic core a cup comprising an attached external flange so as to simplify the shapes of the movable magnetic core. This design, if it partially simplifies the mobile magnetic core, does not however make it possible to produce the rear shoulder surface of the bore of the mobile magnetic core and the front surface intended to receive the closure plate according to a process other than the bar turning, and the manufacture of the movable magnetic core remains expensive, the external flange not being a form achievable by bar turning and preferably having to be an insert.
Pour simplifier les formes du noyau magnétique mobile, et permettre l'utilisation d'un autre procédé de fabrication, moins coûteux, tel que l'extrusion, l'invention propose un noyau magnétique mobile comportant une surface d'épaulement arrière de l'alésage du noyau magnétique mobile simplifiée, et une fermeture simplifiée du fond de l'alésage.To simplify the shapes of the mobile magnetic core, and allow the use of another, less costly manufacturing process, such as extrusion, the invention proposes a mobile magnetic core comprising a rear shoulder surface of the bore. of the simplified movable magnetic core, and a simplified closure of the bottom of the bore.
Dans ce but, l'invention propose un contacteur de démarreur de moteur thermique, notamment de véhicule automobile, du type comportant une bobine annulaire, qui entoure un noyau magnétique cylindrique monté coulissant axialement dans un alésage de la bobine, du type dans lequel un tronçon arrière du noyau magnétique mobile fait saillie axialement à l'extérieur de la bobine fixe, du type dans lequel un ressort externe de rappel du noyau magnétique mobile est en appui axial contre une collerette radiale extérieure rapportée du tronçon arrière du noyau magnétique mobile, du type dans lequel le noyau magnétique mobile comporte un alésage intérieur qui débouche à l'extrémité arrière qui est agencée en avant de la collerette et qui permet le passage d'une tige d'attelage, dont l'extrémité arrière est liée à un levier d'actionnement du pignon de lanceur, qui est rappelée élastiquement vers l'avant de l'alésage par un ressort interne monté comprimé axialement contre une surface avant d'épaulement de la tige d'attelage et une surface d'épaulement arrière du noyau magnétique mobile, et dont l'extrémité avant est susceptible de prendre appui sur un fond avant de l'alésage pour être entraînée en translation par le noyau magnétique mobile du démarreur, caractérisé en ce que le fond avant de l'alésage est réalisé venu de matière avec le corps du noyau magnétique mobile, et en ce qu'une coupelle rapportée à l'extrémité arrière du noyau magnétique mobile comporte la surface d'épaulement arrière de l'alésage du noyau magnétique mobile et la collerette extérieure. Selon d'autres caractéristiques de l'invention : la collerette extérieure est agencée à l'extrémité arrière de la coupelle, et la surface d'épaulement de l'alésage du noyau magnétique mobile constitue un fond avant de la coupelle, percé pour le passage de la tige d'attelage, et qui est en butée axialement vers l'avant contre la face d'extrémité arrière du corps du noyau ; le diamètre extérieur du corps de la coupelle est sensiblement égal au diamètre du corps du noyau magnétique mobile, de manière que la coupelle prolonge axialement vers l'arrière le corps du noyau magnétique mobile ;To this end, the invention provides a starter contactor for a thermal engine, in particular for a motor vehicle, of the type comprising an annular coil, which surrounds a cylindrical magnetic core mounted to slide axially in a bore of the coil, of the type in which a section rear of the movable magnetic core protrudes axially outside the fixed coil, of the type in which an external return spring of the mobile magnetic core is in axial abutment against an external radial flange added from the rear section of the mobile magnetic core, of the type in which the mobile magnetic core has an internal bore which opens out at the rear end which is arranged in front of the flange and which allows the passage of a coupling rod, the rear end of which is linked to an actuating lever of the starter pinion, which is resiliently biased towards the front of the bore by an internal spring mounted axially compressed against a front shoulder surface of the coupling rod and a rear shoulder surface of the movable magnetic core, the front end of which is capable of bearing on a front bottom of the bore so as to be driven in translation by the movable magnetic core of the starter, characterized in that the front bottom of the bore is made integrally with the body of the movable magnetic core, and in that that a cup attached to the rear end of the mobile magnetic core comprises the rear shoulder surface of the bore of the mobile magnetic core and the external flange. According to other characteristics of the invention: the external flange is arranged at the rear end of the cup, and the shoulder surface of the bore of the movable magnetic core constitutes a front bottom of the cup, pierced for passage of the coupling rod, and which abuts axially forwards against the rear end face of the core body; the outside diameter of the body of the cup is substantially equal to the diameter of the body of the mobile magnetic core, so that the cup extends axially towards the rear of the body of the mobile magnetic core;
- le fond avant de la coupelle est soudé à l'extrémité arrière du corps du noyau magnétique mobile ;- The front bottom of the cup is welded to the rear end of the body of the mobile magnetic core;
- la coupelle comporte au moins deux bras qui s'étendent axialement vers l'avant au delà du fond avant de la coupelle et en regard de la périphérie du noyau magnétique mobile ;- The cup has at least two arms which extend axially forwards beyond the front bottom of the cup and facing the periphery of the mobile magnetic core;
- les bras comportent à leurs extrémités avant des coudes qui sont rabattus radialement vers l'axe du noyau magnétique mobile ; les bras sont découpés dans le fond avant de la coupelle, et sont repliés à angle droit ;- The arms have at their front ends elbows which are folded radially towards the axis of the movable magnetic core; the arms are cut in the front bottom of the cup, and are folded at right angles;
- la coupelle est sertie sur le noyau magnétique mobile par un écrasement axial du matériau de l'extrémité arrière du corps du noyau magnétique mobile, qui forme un bourrelet périphérique agencé axialement entre l'extrémité arrière du corps du noyau magnétique mobile et les coudes des bras, de manière à immobiliser axialement les bras ;- the cup is crimped onto the mobile magnetic core by an axial crushing of the material of the rear end of the body of the mobile magnetic core, which forms a peripheral bead arranged axially between the rear end of the body of the mobile magnetic core and the elbows of the arms, so as to immobilize the arms axially;
- les coudes des bras sont emboîtés radialement dans une gorge formée dans la périphérie du corps du noyau magnétique mobile ;- the elbows of the arms are fitted radially into a groove formed in the periphery of the body of the mobile magnetic core;
- la coupelle est sertie sur le noyau magnétique mobile par un écrasement axial du matériau de la périphérie du noyau magnétique mobile, qui provoque, radialement et vers l'extérieur, un reflux de matière dans des trous qui sont agencés en regard dans les bras ;- The cup is crimped on the movable magnetic core by an axial crushing of the material of the periphery of the movable magnetic core, which causes, radially and outward, a reflux of material in holes which are arranged opposite in the arms;
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui suit pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels :Other characteristics and advantages of the invention will appear on reading the following detailed description for the understanding of which reference will be made to the appended drawings in which:
- la figure 1 est une vue en coupe axiale d'un démarreur comportant un contacteur selon l'état de la technique ;- Figure 1 is an axial sectional view of a starter comprising a contactor according to the prior art;
- la figure 2 est une vue en coupe axiale d'un noyau magnétique mobile sur lequel est soudée une coupelle selon un premier mode de réalisation de l'invention ;- Figure 2 is an axial sectional view of a movable magnetic core on which is welded a cup according to a first embodiment of the invention;
- la figure 3 est une vue en coupe axiale d'un noyau magnétique mobile sur lequel est sertie une coupelle selon un deuxième mode de réalisation de l'invention ; la figure 4 est une vue d'après la figure 3 représentant, selon une vue axiale arrière, une coupelle selon le deuxième mode de réalisation de l'invention ;- Figure 3 is an axial sectional view of a movable magnetic core on which is crimped a cup according to a second embodiment of the invention; Figure 4 is a view according to Figure 3 showing, in a rear axial view, a cup according to the second embodiment of the invention;
- la figure 5 est une vue en coupe axiale de la coupelle de la figure 4 ;- Figure 5 is an axial sectional view of the cup of Figure 4;
- la figure 6 est une vue en coupe axiale d'un noyau magnétique mobile sur lequel est emboîtée une coupelle selon un troisième mode de réalisation de l'invention ;- Figure 6 is an axial sectional view of a movable magnetic core on which is fitted a cup according to a third embodiment of the invention;
- la figure 7 est une vue en coupe selon la ligne 7-7 de la figure 9 d'un noyau magnétique mobile sur lequel est sertie une coupelle selon un quatrième mode de réalisation de 1 ' invention ; la figure 8 est un détail F8 de la figure 7 représentant la fixation des bras de la coupelle sur le noyau magnétique mobile ;- Figure 7 is a sectional view along line 7-7 of Figure 9 of a movable magnetic core on which is crimped a cup according to a fourth embodiment of the invention; Figure 8 is a detail F8 of Figure 7 showing the attachment of the cup arms on the movable magnetic core;
- la figure 9 est une vue selon la ligne 9-9 de la figure 10 représentant en une vue axiale arrière de la coupelle représentée à la figure 7 ; et- Figure 9 is a view along line 9-9 of Figure 10 showing in a rear axial view of the cup shown in Figure 7; and
- la figure 10 est une vue en coupe axiale, selon la ligne 10-10 de la figure 9, de la coupelle représentée à la figure 7.FIG. 10 is a view in axial section, on the line 10-10 of FIG. 9, of the cup shown in FIG. 7.
Dans la description qui va suivre, des chiffres de référence identiques désignent des pièces identiques ou ayant des fonctions similaires. On a représenté à la figure 1 un démarreur 10 destiné à équiper un moteur à combustion de véhicule automobile (non représenté) . Le démarreur 10 est constitué pour l'essentiel par un carter 12 à l'intérieur duquel est agencé un pignon de lanceur 14 qui est monté coulissant sur une extrémité d'un arbre 16. L'arbre 16 est entraîné en rotation par un moteur électrique 18 du démarreur 10.In the following description, identical reference numerals designate identical parts or having similar functions. FIG. 1 shows a starter 10 intended to equip a combustion engine of a motor vehicle (not shown). The starter 10 essentially consists of a casing 12 inside which a starter pinion 14 is arranged which is slidably mounted on one end of a shaft 16. The shaft 16 is rotated by an electric motor 18 of starter 10.
Les mouvements en coulissement du pignon de lanceur 14 sont provoqués par un levier ou fourchette 20 qui pivote à l'intérieur du carter 12 autour d'un axe géométrique horizontal X-X.The sliding movements of the starter pinion 14 are caused by a lever or fork 20 which pivots inside the casing 12 around a horizontal geometric axis X-X.
L'extrémité libre inférieure 22 du levier de commande 20 agit sur un entraîneur 24 du pignon de lanceur 14 tandis que son extrémité libre supérieure 25 est reliée à une tige d'attelage 26 appartenant à un contacteur électromagnétique 30, qui est agencé à la partie supérieure du démarreur 10.The lower free end 22 of the control lever 20 acts on a drive 24 of the starter pinion 14 while its upper free end 25 is connected to a coupling rod 26 belonging to an electromagnetic contactor 30, which is arranged at the part starter upper 10.
Selon une conception connue, le contacteur 30 comporte un noyau magnétique mobile 32 dont les déplacements, sont commandés par une bobine 34 selon un axe horizontal Y-Y perpendiculaire à l'axe X-X de pivotement du levier 20. Le noyau magnétique mobile 32 est une pièce générale de forme cylindrique annulaire creuse qui est guidée en coulissement par sa surface cylindrique externe et dont l'alésage interne 36 reçoit la tige d'attelage 26 et un ressort hélicoïdal de compression 38.According to a known design, the contactor 30 comprises a movable magnetic core 32 whose movements are controlled by a coil 34 along a horizontal axis YY perpendicular to the axis XX of pivoting of the lever 20. The movable magnetic core 32 is a general part of hollow annular cylindrical shape which is guided in sliding by its external cylindrical surface and of which the internal bore 36 receives the coupling rod 26 and a helical compression spring 38.
L'extrémité arrière 40 du ressort 38 prend appui contre une surface d'épaulement arrière 42 de l'alésage 36 du noyau magnétique mobile 32, et l'extrémité avant 44 du ressort 38 prend appui contre une surface d'épaulement avant de la tige d'attelage 26, qui est portée par une tête 46 agencée à l'extrémité libre avant de la tige d'attelage 26.The rear end 40 of the spring 38 bears against a rear shoulder surface 42 of the bore 36 of the movable magnetic core 32, and the front end 44 of the spring 38 bears against a front shoulder surface of the rod coupling 26, which is carried by a head 46 arranged at the free front end of the coupling rod 26.
Par ailleurs, la tige d'attelage 26 est susceptible de prendre appui, par l'intermédiaire de sa tête 46, sur un fond avant 48 constitué d'un disque de fermeture de l'alésage 36 en forme de plaque, qui est serti dans un logement cylindrique 50 du noyau magnétique mobile 32, la tige d'attelage 26 étant susceptible d'être entraînée en translation suivant l'axe Y-Y et vers l'arrière par le noyau magnétique mobile 32 lors de 1 ' actionnement ou du relâchement de 1 'électroaimant qui est composé du noyau magnétique mobile 32 et de la bobine 34.Furthermore, the coupling rod 26 is capable of bearing, by means of its head 46, on a front bottom 48 consisting of a plate-shaped bore closing disc 36, which is crimped in a cylindrical housing 50 of the movable magnetic core 32, the coupling rod 26 being capable of being driven in translation along the axis YY and towards the rear by the movable magnetic core 32 during actuation or release of 1 electromagnet which is composed of the mobile magnetic core 32 and the coil 34.
Suivant l'état de la technique, la surface annulaire d'épaulement arrière 42 est réalisée venue de matière avec le corps du noyau magnétique mobile 32, et l'extrémité arrière 52 du noyau magnétique mobile 32, qui fait saillie axialement vers l'arrière hors de la bobine fixe 34, comporte une coupelle rapportée 54, qui est sertie sur l'extrémité arrière 52 du noyau magnétique mobile 32, et qui comporte à sa périphérie une collerette 56, qui s'étend radialement vers l'extérieur, et qui est destinée à servir d'appui à un ressort externe 58 de rappel du noyau magnétique mobile 32 vers sa position arrière de repos illustrée à la figure 1. En effet, le ressort 58 rappelle élastiquement vers l'arrière le noyau magnétique mobile 32 en prenant appui entre la collerette 56 et la carcasse 31 du contacteur 30.According to the state of the art, the annular rear shoulder surface 42 is made integrally with the body of the movable magnetic core 32, and the rear end 52 of the movable magnetic core 32, which projects axially rearward. outside the fixed coil 34, has an attached cup 54, which is crimped on the rear end 52 of the movable magnetic core 32, and which has at its periphery a flange 56, which extends radially outwards, and which is intended to serve as a support for an external spring 58 for returning the movable magnetic core 32 to its rear rest position illustrated in FIG. 1. Indeed, the spring 58 resiliently returns the movable magnetic core 32 backwards by taking support between the collar 56 and the casing 31 of the contactor 30.
La figure 2 illustre un premier mode de réalisation de l'invention dans lequel une nouvelle coupelle rapportée 54 est agencée à l'extrémité arrière 52 du noyau magnétique mobile 32. Le noyau magnétique mobile 32 diffère sensiblement du noyau magnétique mobile précédemment décrit en référence à la figure 1, dans la mesure où l'alésage 36 du noyau mobile 32 débouche à l'arrière du noyau magnétique mobile 32 et est borgne à 1 ' avant .FIG. 2 illustrates a first embodiment of the invention in which a new attached cup 54 is arranged at the rear end 52 of the mobile magnetic core 32. The mobile magnetic core 32 differs significantly from the mobile magnetic core previously described with reference to Figure 1, to the extent that the bore 36 of the movable core 32 opens at the rear of the mobile magnetic core 32 and is blind at the front.
Ainsi, le fond avant 48 de l'alésage 36 n'est plus, comme précédemment décrit en référence à l'état de la technique, constitué par un disque rapporté mais il est réalisé venu de matière avec le corps du noyau magnétique mobile 32.Thus, the front bottom 48 of the bore 36 is no longer, as previously described with reference to the state of the art, constituted by an attached disc but it is made integrally with the body of the mobile magnetic core 32.
Le corps tubulaire de la coupelle rapportée 54 est extérieurement d'un diamètre sensiblement égal au diamètre du noyau magnétique mobile 32 et elle comporte à son extrémité arrière la collerette 56 précédemment décrite en référence à la figure 1.The tubular body of the attached cup 54 is externally of a diameter substantially equal to the diameter of the mobile magnetic core 32 and it comprises at its rear end the flange 56 previously described with reference to FIG. 1.
L'alésage 36 ne comporte plus de face annulaire arrière interne comme précédemment décrit en référence à la figure 1, mais il débouche dans la face annulaire d'extrémité libre arrière 52 du noyau 32.The bore 36 no longer has an internal rear annular face as previously described with reference to FIG. 1, but it opens into the annular rear free end face 52 of the core 32.
L'épaulement radial arrière de l'alésage 36 du noyau magnétique mobile 32 est constitué par un fond 62 de la coupelle 54, dont un trou central 60, de diamètre supérieur au diamètre de la tige d'attelage 26, autorise des débattements axiaux et verticaux de la tige d'attelage 26 lorsque l'extrémité arrière de celle-ci se déplace avec l'extrémité 25 du levier d'actionnement 20.The rear radial shoulder of the bore 36 of the movable magnetic core 32 is constituted by a bottom 62 of the cup 54, including a central hole 60, of diameter greater than the diameter of the coupling rod 26, allows axial deflections and vertical of the coupling rod 26 when the rear end of the latter moves with the end 25 of the actuating lever 20.
La partie centrale du fond 62 de la coupelle 54 qui s'étend radialement vers l'intérieur en regard de l'alésage 36 forme la surface d'épaulement annulaire arrière 42 qui permet l'appui du ressort interne 38 de rappel de la tige d'attelageThe central part of the bottom 62 of the cup 54 which extends radially inwards opposite the bore 36 forms the rear annular shoulder surface 42 which allows the support of the internal spring 38 for returning the rod d 'coupling
26.26.
La coupelle 54 comporte donc à elle seule les deux surfaces 56 et 42 d'appui des ressorts externe 58 de rappel du noyau magnétique mobile 32, et interne 38 de rappel de la tige d'attelage 26.The cup 54 therefore alone comprises the two surfaces 56 and 42 for supporting the external springs 58 for returning the movable magnetic core 32, and the internal 38 for returning the coupling rod 26.
Avantageusement, dans ce mode de réalisation, la coupelle 54 est soudée au niveau de la périphérie de son fond 62 à la périphérie de l'extrémité arrière 52 du noyau magnétique mobile 32.Advantageously, in this embodiment, the cup 54 is welded at the periphery of its bottom 62 at the periphery of the rear end 52 of the mobile magnetic core 32.
En variante, le fond 62 de la coupelle 54 peut être assemblé par soudage par points ou collé à l'extrémité arrière 52 du noyau magnétique mobile 32. La figure 3 illustre un deuxième mode de réalisation dans lequel la coupelle 54 est sertie à l'extrémité arrière 52 du noyau magnétique mobile 32.As a variant, the bottom 62 of the cup 54 can be assembled by spot welding or glued to the rear end 52 of the mobile magnetic core 32. FIG. 3 illustrates a second embodiment in which the cup 54 is crimped at the rear end 52 of the mobile magnetic core 32.
La coupelle 54 présente une forme globalement analogue à celle décrite en référence à la figure 2. Dans ce deuxième mode de réalisation de l'invention, le corps tubulaire de la coupelle 54 est d'un diamètre légèrement supérieur au diamètre extérieur du noyau magnétique mobile 32 et il comporte de préférence trois bras 64, répartis angulairement à intervalles réguliers, qui s'étendent axialement vers l'avant de façon à être adjacents la périphérie du noyau magnétique mobile 32. Les bras 64 comportent à leur extrémités avant des coudes 68 qui ont pour fonction de réaliser un centrage de la coupelle 54 sur le corps du noyau mobile 32. Avantageusement, la coupelle 54 peut, par exemple, être réalisée par emboutissage.The cup 54 has a shape generally similar to that described with reference to FIG. 2. In this second embodiment of the invention, the tubular body of the cup 54 has a diameter slightly greater than the outside diameter of the mobile magnetic core 32 and it preferably comprises three arms 64, angularly distributed at regular intervals, which extend axially forwards so as to be adjacent the periphery of the movable magnetic core 32. The arms 64 have at their front ends elbows 68 which have the function of centering the cup 54 on the body of the movable core 32. Advantageously, the cup 54 can, for example, be produced by stamping.
En variante, la coupelle 54 peut, au moment de sa fabrication, être formée à partir d'une coupelle 54 analogue à celle décrite en référence à la figure 2, dans le fond 62 de laquelle sont découpées par poinçonnage trois pattes radiales planes qui sont par la suite repliées perpendiculairement et suivant la direction axiale Y-Y au fond 62 pour former les bras 64 qui s'étendent axialement vers l'avant.As a variant, the cup 54 can, at the time of its manufacture, be formed from a cup 54 similar to that described with reference to FIG. 2, in the bottom 62 from which are punched out three flat radial tabs which are subsequently folded perpendicularly and in the axial direction YY at the bottom 62 to form the arms 64 which extend axially forward.
Au moment de l'assemblage, la coupelle 54 est enfilée sur l'extrémité arrière 52 du noyau magnétique mobile 32 jusqu'à ce que le fond 62 de la coupelle 64 soit axialement en butée contre l'extrémité arrière 52 du noyau magnétique mobile 32. Avantageusement, l'extrémité arrière 52 du noyau magnétique mobile 32 constitue une butée axiale vers l'avant pour la coupelle 54.At the time of assembly, the cup 54 is threaded onto the rear end 52 of the mobile magnetic core 32 until the bottom 62 of the cup 64 is axially in abutment against the rear end 52 of the mobile magnetic core 32 Advantageously, the rear end 52 of the mobile magnetic core 32 constitutes an axial stop towards the front for the cup 54.
Par ailleurs, la coupelle 54 est simultanément maintenue extérieurement afin de ne pas pouvoir se déformer radialement vers l'extérieur. Un outil de sertissage pénètre alors axialement suivant l'axe Y-Y à l'intérieur de la coupelle 54 dans les espaces laissés libres par la découpe des bras 64, que l'on peut plus particulièrement voir à la figure 4, et écrase l'extrémité 52 du noyau magnétique mobile, en formant axialement en regard des bras 64 de la coupelle 54 un bourrelet 66 de matériau du noyau magnétique mobile 32, qui permet l'immobilisation axiale vers l'arrière des bras 64 de la coupelle 54 par rapport au noyau magnétique mobile 32. La coupelle 54 étant par ailleurs immobilisée axialement vers l'avant par l'intermédiaire de son fond 62 en appui sur l'extrémité arrière 52 du noyau magnétique mobile 32, elle se trouve rigidement liée au noyau magnétique mobile 32.Furthermore, the cup 54 is simultaneously held externally so as not to be able to deform radially outward. A crimping tool then penetrates axially along the YY axis inside the cup 54 into the spaces left free by the cutting of the arms 64, which can more particularly be seen in FIG. 4, and crushes the end 52 of the movable magnetic core, forming axially opposite the arms 64 of the cup 54 a bead 66 of material of the mobile magnetic core 32, which allows the axial immobilization towards the rear of the arms 64 of the cup 54 relative to the mobile magnetic core 32. The cup 54 is moreover immobilized axially towards the front by means of its bottom 62 resting on the rear end 52 of the mobile magnetic core 32, it is rigidly linked to the mobile magnetic core 32.
La figure 6 illustre un troisième mode de réalisation dans lequel la coupelle 54 n'est pas sertie mais emboîtée à force sur l'extrémité arrière 52 du noyau magnétique mobile 32. La coupelle 54 est sensiblement analogue à la coupelle 54 décrite en référence à la figure 3, et elle est munie de trois bras 64 répartis angulairement à intervalles réguliers qui s'étendent axialement vers l'avant au contact de la périphérie du noyau magnétique mobile 32. Les bras 64 comportent à leur extrémité avant des coudes 68 qui sont rabattus radialement vers l'axe Y-Y du noyau magnétique mobile 32 et qui sont, dans ce mode de réalisation, susceptibles d'être reçus dans une gorge radiale externe 70 réalisée à la périphérie du noyau magnétique mobile 32.FIG. 6 illustrates a third embodiment in which the cup 54 is not crimped but fitted by force onto the rear end 52 of the movable magnetic core 32. The cup 54 is substantially similar to the cup 54 described with reference to the Figure 3, and it is provided with three arms 64 angularly distributed at regular intervals which extend axially forwardly in contact with the periphery of the movable magnetic core 32. The arms 64 have at their front end bends 68 which are folded down radially towards the axis YY of the mobile magnetic core 32 and which are, in this embodiment, capable of being received in an external radial groove 70 produced at the periphery of the mobile magnetic core 32.
De la sorte, et comme on peut le voir sur la figure 6, lors de l'assemblage de la coupelle 54 sur le noyau magnétique mobile 32, la coupelle 54 est enfilée axialement sur le noyau magnétique mobile 32 en déformant temporairement vers l'extérieur les bras 64, puis les coudes 68 des bras 64 de la coupelle 54 pénètrent dans la gorge 70 du noyau magnétique mobile 32 en assurant ainsi son immobilisation axiale, le fond 62 de la coupelle 54 venant au contact de l'extrémité arrière 52 du noyau magnétique mobile 32 pour parfaire l'immobilisation axiale de la coupelle 54 et déterminer une position axiale précise de la coupelle 54 par rapport au noyau 32.In this way, and as can be seen in FIG. 6, during assembly of the cup 54 on the mobile magnetic core 32, the cup 54 is threaded axially on the mobile magnetic core 32 while temporarily deforming towards the outside the arms 64, then the elbows 68 of the arms 64 of the cup 54 penetrate into the groove 70 of the movable magnetic core 32 thus ensuring its axial immobilization, the bottom 62 of the cup 54 coming into contact with the rear end 52 of the core mobile magnetic 32 for perfecting the axial immobilization of the cup 54 and determining a precise axial position of the cup 54 relative to the core 32.
Les figures 7 à 10 illustrent un quatrième mode de réalisation dans lequel la coupelle comporte deux bras axiaux diamétralement opposés et qui sont fixés au noyau magnétique mobile 32.FIGS. 7 to 10 illustrate a fourth embodiment in which the cup comprises two diametrically opposite axial arms which are fixed to the mobile magnetic core 32.
Comme l'illustrent les figure 9 et 10, la coupelle 54 comporte deux bras 64, qui s'étendent axialement vers l'avant et qui présentent sensiblement la forme d'un arc de cercle dans un plan transversal perpendiculaire à l'axe Y-Y. Les bras 64 comportent chacun deux trous 71 situés dans ce même plan transversal, et qui sont destinés à coopérer avec le corps du noyau magnétique mobile 32 lors du sertissage pour réaliser l'immobilisation de la coupelle 54 par rapport au noyau magnétique mobile 32.As illustrated in FIGS. 9 and 10, the cup 54 comprises two arms 64, which extend axially towards the front and which have substantially the shape of an arc of a circle in a transverse plane perpendicular to the YY axis. The arms 64 each have two holes 71 located in this same transverse plane, and which are intended to cooperate with the body of the movable magnetic core 32 during crimping to immobilize the cup 54 relative to the movable magnetic core 32.
La coupelle 54 peut être par exemple réalisée par emboutissage, ou par poinçonnage et pliage, les bras 64 étant préalablement découpés dans le fond 62 de la coupelle 54, puis repliés perpendiculairement à celle-ci de façon à ce qu'une fois la coupelle 54 en position sur le noyau magnétique mobile 32, ceux-ci s'étendent axialement vers l'avant en épousant la périphérie du noyau magnétique mobile 32.The cup 54 can for example be produced by stamping, or by punching and folding, the arms 64 being cut beforehand in the bottom 62 of the cup 54, then folded perpendicularly to the latter so that once the cup 54 in position on the mobile magnetic core 32, these extend axially towards the front by following the periphery of the mobile magnetic core 32.
Lors de l'assemblage de la coupelle 54 sur le noyau magnétique mobile 32, la coupelle 54 est enfilée axialement sur le noyau magnétique mobile 32 jusqu'à ce que son fond 62 soit en butée sur l'extrémité arrière 52 du noyau magnétique mobile 32.When assembling the cup 54 on the mobile magnetic core 32, the cup 54 is threaded axially on the mobile magnetic core 32 until its bottom 62 abuts on the rear end 52 of the mobile magnetic core 32 .
La coupelle 54 est retenue sur sa périphérie extérieure par un gabarit approprié pour éviter qu'elle ne se déforme lors de l'opération de sertissage. Puis un outil de sertissage pénètre à l'intérieur de la concavité de la coupelle 54 dans les interstices laissés libres par la découpe des bras 64 et écrase l'extrémité arrière 52 du noyau magnétique mobile 32 de sorte que le matériau du noyau magnétique mobile 32 est refoulé radialement vers l'extérieur et pénètre dans les trous 71 de la coupelle 54, en l'immobilisant axialement vers l'arrière, comme représenté sur la vue de détail de la figure 8.The cup 54 is retained on its outer periphery by an appropriate template to prevent it from being deformed during the crimping operation. Then a crimping tool penetrates inside the concavity of the cup 54 into the interstices left free by the cutting of the arms 64 and crushes the rear end 52 of the mobile magnetic core 32 so that the material of the mobile magnetic core 32 is driven radially outwards and enters the holes 71 of the cup 54, immobilizing it axially towards the rear, as shown in the detail view of FIG. 8.
Avantageusement, les différents noyaux magnétiques mobiles de contacteur 30 ainsi réalisés permettent d'abaisser notablement les coûts de production. Advantageously, the various mobile magnetic contactor cores 30 thus produced make it possible to significantly reduce production costs.

Claims

REVENDICATIONS
1. Contacteur (30) de démarreur (10) de moteur thermique, notamment de véhicule automobile, du type comportant une bobine annulaire (34), qui entoure un noyau magnétique cylindrique (32) monté coulissant axialement dans un alésage de la bobine (34), du type dans lequel un tronçon arrière du noyau magnétique mobile (32) fait saillie axialement à l'extérieur de la bobine fixe (34) , du type dans lequel un ressort externe de rappel (58) du noyau magnétique mobile est en appui axial contre une collerette radiale extérieure (56) rapportée du tronçon arrière du noyau magnétique mobile (32), du type dans lequel le noyau magnétique mobile (32) comporte un alésage intérieur (36) qui débouche à l'extrémité arrière (52) qui est agencée en avant de la collerette (56) et qui permet le passage d'une tige d'attelage (26), dont l'extrémité arrière est liée à un levier d'actionnement (20) du pignon (14) de lanceur, qui est rappelée élastiquement vers l'avant de l'alésage (36) par un ressort interne (38) monté comprimé axialement contre une surface avant d'épaulement de la tige d'attelage (26) et une surface d'épaulement arrière (42) du noyau magnétique mobile (32), et dont l'extrémité avant est susceptible de prendre appui sur un fond avant de l'alésage (48) pour être entraînée en translation par le noyau magnétique mobile (32) du démarreur, caractérisé en ce que le fond avant (48) de l'alésage1. Contactor (30) for a starter motor (10) of a heat engine, in particular of a motor vehicle, of the type comprising an annular coil (34), which surrounds a cylindrical magnetic core (32) mounted to slide axially in a bore of the coil (34 ), of the type in which a rear section of the mobile magnetic core (32) projects axially outside the fixed coil (34), of the type in which an external return spring (58) of the mobile magnetic core is supported axial against an external radial flange (56) added from the rear section of the mobile magnetic core (32), of the type in which the mobile magnetic core (32) has an internal bore (36) which opens at the rear end (52) which is arranged in front of the collar (56) and which allows the passage of a coupling rod (26), the rear end of which is linked to an actuation lever (20) of the starter pinion (14), which is resiliently biased towards the front of the bore e (36) by an internal spring (38) mounted axially compressed against a front shoulder surface of the coupling rod (26) and a rear shoulder surface (42) of the mobile magnetic core (32), and of which the front end is capable of bearing on a front bottom of the bore (48) to be driven in translation by the movable magnetic core (32) of the starter, characterized in that the front bottom (48) of the bore
(36) est réalisé venu de matière avec le corps du noyau magnétique mobile (36), et en ce qu'une coupelle (54) rapportée à l'extrémité arrière (52) du noyau magnétique mobile (32) comporte la surface d'épaulement arrière (42) de l'alésage (36) du noyau magnétique mobile (32) et la collerette extérieure (56) .(36) is made integrally with the body of the mobile magnetic core (36), and in that a cup (54) attached to the rear end (52) of the mobile magnetic core (32) comprises the surface of rear shoulder (42) of the bore (36) of the movable magnetic core (32) and the outer flange (56).
2. Contacteur (30) de démarreur (10) selon la revendication 1, caractérisé en ce que la collerette extérieure (56) est agencée à l'extrémité arrière de la coupelle (54), et en que la surface d'épaulement (42) de l'alésage du noyau magnétique mobile (32), constitue un fond avant (62) de la coupelle (54), percé pour le passage de la tige d'attelage (26), et qui est en butée axialement vers l'avant contre la face d'extrémité arrière du corps du noyau.2. starter contactor (30) (10) according to claim 1, characterized in that the outer flange (56) is arranged at the rear end of the cup (54), and in that the shoulder surface (42 ) of the bore of the mobile magnetic core (32), constitutes a front bottom (62) of the cup (54), pierced for the passage of the coupling rod (26), and which is axially forwardly abutting against the rear end face of the core body.
3. Contacteur (30) de démarreur (10) selon l'une quelconque des revendications précédentes, caractérisée en ce que le diamètre extérieur du corps de la coupelle (54) est sensiblement égal au diamètre du corps du noyau magnétique mobile (32) , de manière que la coupelle (54) prolonge axialement vers l'arrière le corps du noyau magnétique mobile (32).3. starter contactor (30) according to any one of the preceding claims, characterized in that the outside diameter of the body of the cup (54) is substantially equal to the diameter of the body of the mobile magnetic core (32), so that the cup (54) extends axially towards the rear the body of the mobile magnetic core (32).
4. Contacteur (30) de démarreur (10) selon la revendication 2, caractérisé en ce que le fond avant (62) de la coupelle (54) est soudé à l'extrémité arrière (52) du corps du noyau magnétique mobile (32) .4. starter contactor (30) (10) according to claim 2, characterized in that the front bottom (62) of the cup (54) is welded to the rear end (52) of the body of the movable magnetic core (32 ).
5. Contacteur (30) de démarreur (10) selon la revendication 2, caractérisé en ce que la coupelle (54) comporte au moins deux bras (64) qui s'étendent axialement vers l'avant au delà du fond avant (62) de la coupelle (54) et en regard de la périphérie du noyau magnétique mobile (32) .5. Starter contactor (30) (10) according to claim 2, characterized in that the cup (54) comprises at least two arms (64) which extend axially forwards beyond the front bottom (62) of the cup (54) and facing the periphery of the mobile magnetic core (32).
6. Contacteur (30) de démarreur (10) selon la revendication 5, caractérisé en ce que les bras (64) comportent à leurs extrémités avant des coudes (68) qui sont rabattus radialement vers l'axe du noyau magnétique mobile (32) .6. starter contactor (30) (10) according to claim 5, characterized in that the arms (64) have at their front ends elbows (68) which are folded radially towards the axis of the movable magnetic core (32) .
7. Contacteur (30) de démarreur (10) selon l'une quelconque des revendications 5 ou 6, caractérisé en ce que les bras (64) sont découpés dans le fond avant (62) de la coupelle (54), et sont repliés à angle droit.7. starter contactor (30) (10) according to any one of claims 5 or 6, characterized in that the arms (64) are cut in the front bottom (62) of the cup (54), and are folded at right angles.
8. Contacteur (30) de démarreur (10) selon la revendication 6, caractérisé en ce que la coupelle (54) est sertie sur le noyau magnétique mobile (32) par un écrasement axial du matériau de l'extrémité (52) arrière du corps du noyau magnétique mobile, qui forme un bourrelet périphérique (66) agencé axialement entre l'extrémité (52) arrière du corps du noyau magnétique mobile (32) et les coudes (68) des bras (64), de manière à immobiliser axialement les bras (64) .8. contactor (30) starter (10) according to claim 6, characterized in that the cup (54) is crimped on the movable magnetic core (32) by an axial crushing of the material of the rear end (52) of the body of the mobile magnetic core, which forms a peripheral bead (66) arranged axially between the rear end (52) of the body of the mobile magnetic core (32) and the elbows (68) of the arms (64), so as to immobilize axially the arms (64).
9. Contacteur (30) de démarreur (10) selon la revendication 6, caractérisé en ce que les coudes (68) des bras9. starter switch (30) (10) according to claim 6, characterized in that the elbows (68) of the arms
(64) sont emboîtés radialement dans une gorge (70) formée dans la périphérie du corps du noyau magnétique mobile (32) . (64) are fitted radially into a groove (70) formed in the periphery of the body of the movable magnetic core (32).
10. Contacteur (30) de démarreur (10) selon la revendication 6, caractérisé en ce que la coupelle (54) est sertie sur le noyau magnétique mobile (32) par un écrasement axial du matériau de la périphérie du noyau magnétique mobile (32), qui provoque, radialement et vers l'extérieur, un reflux de matière dans des trous (71) qui sont agencés en regard dans les bras (64) . 10. Starter contactor (30) (10) according to claim 6, characterized in that the cup (54) is crimped onto the mobile magnetic core (32) by an axial crushing of the material of the periphery of the mobile magnetic core (32 ), which causes, radially and outwards, a reflux of material into holes (71) which are arranged opposite in the arms (64).
EP99941684A 1998-09-03 1999-09-03 Starting switch with mobile core comprising a directly mounted closure cup Expired - Lifetime EP1029335B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9811122A FR2783090B1 (en) 1998-09-03 1998-09-03 MOBILE CORE STARTER CONTACTOR HAVING AN ADDED CLOSURE CUP
FR9811122 1998-09-03
PCT/FR1999/002101 WO2000014759A1 (en) 1998-09-03 1999-09-03 Starting switch with mobile core comprising a directly mounted closure cup

Publications (2)

Publication Number Publication Date
EP1029335A1 true EP1029335A1 (en) 2000-08-23
EP1029335B1 EP1029335B1 (en) 2005-11-02

Family

ID=9530164

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99941684A Expired - Lifetime EP1029335B1 (en) 1998-09-03 1999-09-03 Starting switch with mobile core comprising a directly mounted closure cup

Country Status (9)

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US (1) US6307454B1 (en)
EP (1) EP1029335B1 (en)
JP (1) JP4376462B2 (en)
KR (1) KR100622206B1 (en)
BR (1) BR9906986B1 (en)
DE (1) DE69928072T2 (en)
ES (1) ES2249912T3 (en)
FR (1) FR2783090B1 (en)
WO (1) WO2000014759A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6864615B2 (en) 2000-12-21 2005-03-08 Valeo Equipments Electriques Moteur Electric machine with brush-holder assembly and method for assembling an electric machine provided with such an assembly
JP2003208840A (en) * 2002-01-10 2003-07-25 Denso Corp Electromagnetic switch for starter
GB2433234A (en) * 2005-12-08 2007-06-20 Autoliv Dev A mounting arrangement for an airbag
FR2959364B1 (en) 2010-04-27 2014-10-31 Valeo Equip Electr Moteur BRUSH ASSEMBLY FOR ELECTRIC MACHINE, SUCH AS A MOTOR VEHICLE STARTER, ASSOCIATED CASSETTE, AND ELECTRIC MACHINE PROVIDED WITH SUCH AN ASSEMBLY
FR3084772B1 (en) * 2018-08-01 2021-06-18 Schneider Electric Ind Sas ELECTROMAGNETIC ACTUATOR AND ELECTRICAL SWITCHING APPARATUS INCLUDING THIS ACTUATOR

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8221714U1 (en) * 1982-07-30 1982-09-23 Robert Bosch Gmbh, 7000 Stuttgart Electromagnetic switch, in particular for starting devices for internal combustion engines
FR2567586B1 (en) * 1984-07-10 1986-12-19 Paris & Du Rhone STARTER PINION GEAR CONTROL FOR INTERNAL COMBUSTION ENGINE STARTER.
DE3910461A1 (en) * 1988-04-01 1989-10-19 Mitsubishi Electric Corp Starter
IT1261588B (en) * 1993-09-14 1996-05-23 Magneti Marelli Spa ELECTROMAGNETIC CONTROL DEVICE FOR AN ELECTRIC STARTER ENGINE FOR INTERNAL COMBUSTION ENGINES.
JPH08129948A (en) * 1994-10-28 1996-05-21 Mitsubishi Electric Corp Magnet switch for starter
US5563563A (en) * 1995-12-04 1996-10-08 Ford Motor Company Solenoid with an improved contact design and a system utilizing the solenoid

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0014759A1 *

Also Published As

Publication number Publication date
JP2002524689A (en) 2002-08-06
DE69928072T2 (en) 2006-07-20
EP1029335B1 (en) 2005-11-02
WO2000014759A1 (en) 2000-03-16
JP4376462B2 (en) 2009-12-02
US6307454B1 (en) 2001-10-23
BR9906986B1 (en) 2013-05-28
KR100622206B1 (en) 2006-09-07
BR9906986A (en) 2000-09-26
ES2249912T3 (en) 2006-04-01
FR2783090A1 (en) 2000-03-10
FR2783090B1 (en) 2000-10-13
KR20010031632A (en) 2001-04-16
DE69928072D1 (en) 2005-12-08

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