EP1230661B1 - Coil frame ignition switch for motor vehicle and starter provided with same - Google Patents

Coil frame ignition switch for motor vehicle and starter provided with same Download PDF

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Publication number
EP1230661B1
EP1230661B1 EP01978507A EP01978507A EP1230661B1 EP 1230661 B1 EP1230661 B1 EP 1230661B1 EP 01978507 A EP01978507 A EP 01978507A EP 01978507 A EP01978507 A EP 01978507A EP 1230661 B1 EP1230661 B1 EP 1230661B1
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EP
European Patent Office
Prior art keywords
tube
base
contactor according
contactor
foregoing
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.)
Expired - Lifetime
Application number
EP01978507A
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German (de)
French (fr)
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EP1230661A1 (en
Inventor
Emmanuel Bermond
Guy Faucon
Alain Roumanet
Eric Tora
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Equipements Electriques Moteur SAS
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Valeo Equipements Electriques Moteur SAS
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Publication of EP1230661A1 publication Critical patent/EP1230661A1/en
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Publication of EP1230661B1 publication Critical patent/EP1230661B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • 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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke

Definitions

  • the invention relates to a carcass contactor for a motor vehicle starter and a starter equipped with such a contactor.
  • a contactor for a motor vehicle starter comprises a movable contact capable of being displaced in translation between a rest position, in which the contact bears against a fixed conductive element connected to a polar mass of the vehicle. , and an active position, in which the movable contact establishes the electrical connection between a current input terminal and a power supply terminal of the starter motor.
  • the shaft of the electric motor rotates a launcher with a pinion, which meshes with a starter ring, rotatably connected to the engine of the vehicle, to start said engine.
  • the input and output terminals are carried by a hollow-shaped support block forming a cover made of insulating material.
  • the contactor comprises a winding with at least one winding for controlling the displacement of a movable core of the contactor, displacement which has the consequence, on the one hand, of causing at the end of the race the power supply of the electric motor of the starter and, d on the other hand, to cause, via a pivoting fork hitched to the movable core and engaging with the launcher, the movement of the starter gear for meshing with the toothed starting ring gear.
  • This contactor comprises a carcass of magnetic material, conventionally made of solid soft iron or sintered.
  • This carcass forms a cylindrical housing sealed by the hood.
  • the annular winding with one or two windings is mounted in this housing, which, in combination with the cover, protects the inside of the contactor against external aggression and ensures a return to ground.
  • the annular winding when traversed by an excitation current, causes in the contactor an axial magnetic flux, in particular thanks to a polar mass forming a fixed core and mounted at one of the axial ends of the winding. The winding is then capable of causing the axial displacement of the mobile core of magnetic material just like the fixed core.
  • the movable core is thus capable of sliding between a rear rest position in which it protrudes axially through a first axial end of the contactor casing, and an active front position in which, under the effect of the magnetic field induced by the winding, it is almost entirely received inside the winding.
  • the first axial end is formed by the centrally perforated bottom of the carcass, which comprises a tubular portion of axial orientation connecting to the outer periphery of the transversely oriented bottom.
  • a helical compression spring resiliently removes the movable core towards its rest position by resting on the outer rear face of the bottom turned away from the winding.
  • This bottom also serves, thanks to its central opening, support for a guide tube also carried by the winding support.
  • the guide tube is at its inner periphery in intimate contact with the outer periphery of the movable core of cylindrical shape.
  • This core is centrally provided with a blind hole for housing an actuating rod and a tooth against tooth spring acting between the movable core and a head of the rod protruding from the movable core to carry a hinge pin for the starter fork engaged with the starter of the starter.
  • the carcass is closed at its second axial end opposite its bottom by the hood.
  • the support block comprises a cylindrical annular skirt, which allows its centering and attachment to the second open end of the carcass, and a transverse bottom which axially closes the contactor.
  • the support is made of plastic.
  • the terminals are substantially diametrically opposed on the bottom of the cover, on either side of the axis of axial symmetry of the contactor.
  • the terminals each comprise a contact head arranged inside the contactor, against the transverse bottom of the support block, and a connection pad, partly threaded and which extends axially through the transverse bottom so as to open at the bottom. outside the contactor.
  • the first terminal is intended to be connected to the positive terminal of a battery of the vehicle via a switch usually actuated by the ignition key or by any other means.
  • the second terminal is provided to receive a power cable of the electric motor of the starter.
  • the support block is fixed, by tight crimping, to the second end of the carcass.
  • this carcass has at its second end, constituted by the free end of its tubular portion, a transverse shoulder for supporting the fixed core, a cylindrical centering portion of the fixed core and a cylindrical portion of small thickness, said portion of crimping, intended for fixing by crimping the cover. More precisely, the end of the portion is folded inwards in contact with an outer portion of frustoconical shape of the cap for clamping the fixed core between the shoulder and the free end of the cover.
  • the axially oriented portion extends axially, in the opposite direction to the bottom, beyond the shoulder.
  • a movable contact consisting of a plate, is capable of being displaced axially within the space delimited by the annular wall and the bottom of the cover, between a rear rest position in which it bears against the stationary core and an active front position in which the movable contact is simultaneously pressed against the terminal heads so as to establish between these two terminals an electrical connection which supplies power to the starter motor electric current from the battery of accumulator of the vehicle.
  • the axial displacement of the movable contact is controlled by a control rod, which is guided axially, and whose displacements are controlled by the movable core.
  • the movable contact is slidably mounted on the control rod.
  • the control rod causes the movable contact from its rest position to its active position by means of a contact spring which is supported on one side against a shoulder of the control rod and on the other side against the rear transverse face of the moving contact.
  • a return spring makes it possible to return the control rod and the moving contact to the rest position.
  • the return spring is supported at the bottom of a cylindrical housing arranged in the center of the transverse bottom of the cover and it axially solicits a metal washer (not visible) which bears against a second shoulder of the control rod and against the face transverse front of the movable contact, which also cooperates with the terminals.
  • the movable contact in one embodiment comes into contact with the fixed core advantageously provided with protuberances for this purpose.
  • the contactor is here electronically and comprises a printed circuit board carrying electronic components and which extends in a transverse plane and axially between the fixed core and a transverse wall belonging to a sealing partition as described in documents EP A 0 751 545 and the application FR 99 09977 filed on 30/07/1999.
  • the sealing partition is made by molding plastic material thus allowing a force insertion into the cover advantageously made of the same material. The seal is obtained by the deformation of the material.
  • control rod which connects the movable magnetic core to the movable contact, passes axially guiding a tubular axial shaft of the sealing wall.
  • the axial shaft is stepped in diameter and has a front and rear section as described in the application FR 99 09977.
  • the rear axial annular section is intended to be received inside the bore of the fixed core with which it cooperates sealingly.
  • a metal connection can be inserted into the bulkhead.
  • the metal connection provides electrical contact between the fixed core and the movable contact when in the rest position.
  • This connection comprises a tongue which protrudes axially towards the front of the partition and which is folded radially so as to extend along the transverse front face of the partition to ensure electrical contact with the moving contact when the latter is in contact with the moving contact. rest position.
  • This tongue is integral with a washer-shaped base axially traversed by the rear axial annular section of the barrel of the partition. The base ensures electrical contact with the fixed core.
  • the barrel has a hole for the passage of the tongue. This hole is formed in the shoulder formed by the change of diameter between the rear and front sections of the shaft of the partition.
  • the movable contact in the rest position is therefore according to the embodiments in contact with the fixed core, particularly when there is no electronic card inside the contactor, or with a sealing partition directly or indirectly via a piece in electrical contact with the fixed core.
  • the thicknesses of the bottom and the tubular portion of the carcass are determined according to the needs of the passage of the magnetic flux.
  • the bottom thus has a relatively large thickness of the order of 3 to 6 mm.
  • the thickness of the tubular portion is lower because the passage section of the magnetic flux is distributed over a larger circumference. This thickness is of the order of 2 to 4 mm. These thicknesses correspond to a carcass obtained by stamping.
  • the crimping portion usually has a thickness of 0.4 mm to 1 mm; the tubular portion internally having three different diameters, in particular for forming the shoulder by means of a change in diameter.
  • the carcass is made in a first step by stamping, then in a second operation is the object of machining operations and finally undergoes in a third step a surface treatment to provide protection against corrosion and give a good appearance to this carcass visible from the outside, especially when the starter is mounted on a vehicle.
  • the machining resumption operations are necessary because, on the one hand, it is necessary to make a length of the carcass, and on the other hand, to achieve the internal diameters of the tubular portion for formation of the shoulder and crimping portion.
  • the surface treatment must be a good conductor of electricity because the external face of the bottom (the rear face) serves to return the earth of the winding, which performs a function of maintaining the movable contact after closing thereof when the motor starter motor turns, and in the case of an electronic contactor back to earth the electronic circuit.
  • the bottom is used for fixing the contactor on the starter housing.
  • a contactor provided with a carcass made of magnetic material of the type indicated above is characterized in that the carcass is made in two pieces, namely a first part of transverse orientation, called the bottom, constituting the perforated bottom and a axial orientation tube having the crimping portion and the shoulder and that the tube is fixed to the bottom.
  • the material cost is reduced compared to a deep drawing realization of a sheet requiring a particular metallurgical quality of the sheet. Compared to a one-piece extrusion production, the cost of the carcass and the investments are reduced.
  • the first piece constituting the bottom may have the desired thickness for a good passage of the magnetic flux.
  • the thickness of the bottom is thus in one embodiment of 1.3 to 2 times the thickness of the tube. The thickness of the bottom may therefore be greater than in the prior art.
  • the tube advantageously undergoes in advance the surface treatment operation.
  • the bottom does not need to undergo an aesthetic surface treatment because it is less visible than the outer tube made aesthetic, especially in terms of color and appearance, by its surface treatment equally suitable for corrosion resistance, so that we have a greater number of choices with regard to the surface treatment of the tube.
  • the bottom is in contact with the starter housing, carrying the electric motor and the contactor, it is possible to do without a surface treatment of the bottom because the risk of corrosion is low because the starter housing is in aluminum alloy.
  • the starter is subjected to a more aggressive environment from the point of view of the corrosion and / or a protection is necessary one will choose the nature of the treatment which is the best suit without concern of esthetics.
  • the tube is cut to the desired length and the formation of the shoulder and the crimping portion is advantageously performed before fixing the bottom with the tube to avoid a machining recovery operation.
  • the tube is a piece of adaptation to this variation in length and exceeds more or less to vary the length of the crimping portion according to the applications, which reduces the number of reference parts to store. It is therefore possible in advance to make a tube with a crimping portion of the greatest length and then to make a length according to the applications.
  • the means of production can be brought together in the same geographical location, thereby reducing the additional costs of transport and production management.
  • the tube covers at least part of the outer periphery of the bottom, which may not be visible.
  • This arrangement facilitates the fixing of the tube with the bottom because a pre-centering is made between the bottom and the tube.
  • the first piece forming the bottom consists of an embodiment in a simple washer.
  • the bottom is rectangular, square or polygonal. This is made possible because it can easily give a complementary shape to the relevant end of the tube or even to the entire tube.
  • This tube may therefore have a section of circular, rectangular, polygonal or other shape.
  • Fixing the tube with its bottom is advantageously carried out inside the tube and thus the carcass to protect this fixation and for aesthetic reasons.
  • the bottom and the tube are assembled, that is to say fixed to each other, by indirect heat supply, in particular by laser welding or by electron beam allowing a very localized heating. not affecting the outer periphery of the tube when this welding is performed inside the carcass.
  • no addition of metal is necessary and a solid, sealed fastening with a good continuity of the magnetic circuit and without protuberance of the weld bead is obtained.
  • This welding is performed in one embodiment of the interior of the tube with an oblique shot directed towards the outer periphery of the bottom.
  • the welding is carried out axially or radially.
  • the invention also proposes a starter according to the teachings of the invention.
  • FIG. 1 is an axial sectional view of the carcass according to the invention.
  • the cylindrical carcass of Figure 1 is intended to replace the carcass of the state of the art.
  • This carcass, axial axis of symmetry A-A thus allows a passage of the magnetic flux as that of the state of the art and comprises parts of magnetic material each of simple and economical form.
  • the carcass 1 is made in two pieces, namely a first piece 11 of transverse orientation, called the bottom, constituting the perforated bottom, and a tube 10 of axial orientation presenting to one of its axial ends 10a the crimping portion 13 for the cover of the state of the art and the shoulder 14 for the fixed core of the state of the art.
  • the thickness of the bottom 12 is greater than that of the tube 10.
  • the tube 10 is of constant thickness except at its first axial end 10a stepped internal diameter for forming a cylindrical portion for guiding and centering for the outer periphery of the fixed core and the cylindrical crimping portion 13 of smaller thickness than the cylindrical portion of guiding and centering defined by the shoulder 14. Another shoulder is formed by the change of diameter between said cylindrical portions.
  • the crimping portion 13 is furthest from the bottom 11.
  • the first end 10a is therefore a two-socket end respectively for the fixed core and the hood.
  • the tube 10, according to another characteristic of the invention, is fixed on the bottom 11 at its axial end 10b of constant thickness in this FIG.
  • the bottom 11 replaces the bottom of the state of the art and is therefore here pierced centrally for the passage of the mobile core.
  • This bottom 11 has the same thickness as the bottom of the state of the art and here consists of simple washer 11.
  • the tube 10 replaces the tubular part of the state of the art therefore has the same internal and external diameters.
  • the thickness of the tube 1, between its end 10b and its shoulder 14, is thus equal to the thickness of the tubular part of the state of the art.
  • the thickness and the length of the crimping portion 13 of the tube 10 are equal to those of the portion of the state of the art to be able to achieve the fixing by crimping the cover in contact with the fixed core.
  • the internal diameter and the length of the cylindrical centering and guiding portion of the tube 10 are equal to those of the guiding and centering portion of the state of the art.
  • the length of the tube 10 is therefore determined accordingly.
  • the tube 10 has a circular section.
  • the crimping portions 13 of the cover and the centering of the fixed core may have the same internal diameter so that the first end 10a has only a casing delimited by the crimping portion extending up to the shoulder 14.
  • the outer diameter of the fixed core is increased.
  • the outer tube 10 has a first end 10a, which extends, in the opposite direction to the bottom 11, projecting axially relative to the shoulder 14 to form the portion 13 of crimping.
  • the tube 10 is intended to provide an electrical connection between the bottom 11 and the fixed core.
  • the tube 10 is set to length to have the same axial length as that of the carcass of the state of the art and therefore to have the same axial position for the free ends of the crimping portions 13.
  • the tube 10 surrounds and therefore covers at least part of the bottom 11 to facilitate assembly and fixing of the bottom 11 with the tube 10.
  • the tube 10 is in contact with the inner periphery of its second axial end 10b with the outer periphery of the bottom 11 so that the bottom 11 is masked by the tube 10, which undergoes in advance a surface treatment to give it an aesthetic appearance and to resist corrosion.
  • the possibilities of choice of this treatment in terms of quality and cost are much greater than those of the carcass of the state of the art because the tube 10 and the bottom 11 do not belong to the same part.
  • the bottom 11 may not undergo a surface treatment because it is intended to come into contact with the housing of the aluminum-based starter and little subject to corrosion. However, in severe climatic conditions of use the bottom may undergo a surface treatment that is best without aesthetic concern.
  • This assembly is carried out by fixing the second axial end 10b of the tube 10 to the bottom 11 and is facilitated by the intimate contact of the inner periphery of the end 10b with the outer periphery of the bottom 11 in the form of a washer. Centering prior to attachment is thus achieved between the parts 10,11.
  • the tube 10 is fixed to the bottom 11 by axial welding at 12, for example by indirect heat transfer of the laser or electron beam type, at the rear face of the base 11 between the peripheries. external and internal respectively of the bottom 11 and the second axial end 10b adjacent the tube 10.
  • This type of weld 12 is alternatively made radially between two transverse faces respectively belonging to the bottom 11 and the adjacent end 10b of the tube 10.
  • the bottom 11 has a plug shape with a shouldered head delimiting the relevant transverse face of the bottom and a body penetrating into the tube 10 being in contact with a portion of the inner periphery of the end 10b whose terminal portion constitutes the other transverse face.
  • the end 10b of the tube 10 surrounds at least part of the bottom 11 as in Figure 1 and the fixing is performed from the inside of the tube 10 and the carcass at the outer periphery of the front face of the bottom 11 and the adjacent inner periphery of the end 10b for particular aesthetic appearance and protect the binding against the external aggression.
  • This fixing is performed by welding.
  • Said weld 12 is made from the inside of the bottom 11 and the carcass at the outer periphery of the front face of the bottom 11 with an oblique shot.
  • the space requirement is not increased, the parts 10, 11 have a simple shape and the fixing is carried out locally by indirect heat supply here by a welding 12 of the laser or electron beam type.
  • the energy densities used in this type of welding are very high so that the surface treatments are destroyed in the welding zone and do not interfere with the welding.
  • the heating is very localized and does not affect the surface treatments of the rest of the part concerned in particular of the outer periphery of the tube 10, which thus retains its aesthetic appearance.
  • the welding is carried out without the indirect addition of metal to maintain the dimensions of the carcass and to avoid a protuberance of the weld.
  • the welding of the laser type or electron bombardment, generally by indirect heat input, is well suited for this purpose.
  • the inner tube 10 consists of a tube section or alternatively a sleeve rolled and welded or rolled and stapled. This tube serves to reinforce the passage section of the magnetic flux also passing through the bottom 11. Of course advantageously is formed in advance the shoulder 14 and the crimping portion 13 to avoid after fixing the bottom 11 a resumption of machining operation .
  • the contactor equipped with the carcass according to the invention mounts in the embodiments shown on a motor vehicle starter.
  • the present invention is not limited to the embodiments described.
  • Other fixing means can be envisaged because in a manner Generally it is sought to make captive the tube 10 and the bottom 11 to form a carcass manipulable and transportable.
  • the tube 10 does not surround the bottom and the fixing of the tube 10 on the bottom 11 is achieved by radial welding 12, for example by indirect heat input of the laser or electron beam type, at the periphery. external of the bottom 11 between the front face of the bottom 11 and the edge of the end 10b of the tube 10.
  • the outer diameters of the bottom 11 and the tube 10 are equal.
  • the tube 10 may cover the outer periphery of the bottom 11 as in Figure 1 and extend to extend in axial projection relative to the rear face of the bottom. Fixing the tube 10 with the bottom 11 is then achieved by welding the inside of the tube 10 with an oblique shot between in this case the outer periphery of the rear face of the bottom 10 and the adjacent inner periphery of the end 10b of the tube 10.
  • weld seams 12 are continuous for good bottom sealing, good continuity of the magnetic circuit and good bonding between the parts 11, 10.

Description

L'invention concerne un contacteur à carcasse pour démarreur de véhicule automobile et un démarreur muni d'un tel contacteur.The invention relates to a carcass contactor for a motor vehicle starter and a starter equipped with such a contactor.

Ainsi qu'on le sait un contacteur pour démarreur de véhicule automobile, comporte un contact mobile susceptible d'être déplacé en translation entre une position de repos, dans laquelle le contact est en appui contre un élément conducteur fixe relié à une masse polaire du véhicule, et une position active, dans laquelle le contact mobile établit le raccordement électrique entre une borne d'entrée du courant et une borne d'alimentation du moteur électrique du démarreur. Dans la position active l'arbre du moteur électrique entraîne en rotation un lanceur doté d'un pignon, qui engrène avec une couronne de démarrage, liée en rotation au moteur thermique du véhicule, pour démarrer ledit moteur. Les bornes d'entrée et de sortie sont portées par un bloc de support de forme creuse formant un capot réalisé en matière isolante. Un tel contacteur est décrit dans le document "EP-A-0 768 695."As is known, a contactor for a motor vehicle starter comprises a movable contact capable of being displaced in translation between a rest position, in which the contact bears against a fixed conductive element connected to a polar mass of the vehicle. , and an active position, in which the movable contact establishes the electrical connection between a current input terminal and a power supply terminal of the starter motor. In the active position the shaft of the electric motor rotates a launcher with a pinion, which meshes with a starter ring, rotatably connected to the engine of the vehicle, to start said engine. The input and output terminals are carried by a hollow-shaped support block forming a cover made of insulating material. Such a contactor is described in the document "EP-A-0 768 695."

Le contacteur comporte un bobinage avec au moins un enroulement pour commander le déplacement d'un noyau mobile du contacteur, déplacement qui a pour conséquence, d'une part, de provoquer en fin de course l'alimentation du moteur électrique du démarreur et, d'autre part, de provoquer, via une fourchette pivotante attelée au noyau mobile et venant en prise avec le lanceur, le déplacement du pignon du démarreur pour son engrènement avec la couronne de démarrage dentée.The contactor comprises a winding with at least one winding for controlling the displacement of a movable core of the contactor, displacement which has the consequence, on the one hand, of causing at the end of the race the power supply of the electric motor of the starter and, d on the other hand, to cause, via a pivoting fork hitched to the movable core and engaging with the launcher, the movement of the starter gear for meshing with the toothed starting ring gear.

Ce contacteur comporte une carcasse en matériau magnétique, classiquement en fer doux massif ou fritté. Cette carcasse forme un boîtier cylindrique fermé de manière étanche par le capot. Le bobinage annulaire à un ou deux enroulements est monté dans ce boîtier, qui, en combinaison avec le capot, protège l'intérieur du contacteur vis à vis des agressions extérieures et qui assure un retour à la masse. Le bobinage annulaire, lorsqu'il est parcouru par un courant d'excitation, provoque dans le contacteur un flux magnétique axial, notamment grâce à une masse polaire formant noyau fixe et monté à l'une des extrémités axiales du bobinage. Le bobinage est alors susceptible de provoquer le déplacement axial du noyau mobile en matériau magnétique tout comme le noyau fixe.This contactor comprises a carcass of magnetic material, conventionally made of solid soft iron or sintered. This carcass forms a cylindrical housing sealed by the hood. The annular winding with one or two windings is mounted in this housing, which, in combination with the cover, protects the inside of the contactor against external aggression and ensures a return to ground. The annular winding, when traversed by an excitation current, causes in the contactor an axial magnetic flux, in particular thanks to a polar mass forming a fixed core and mounted at one of the axial ends of the winding. The winding is then capable of causing the axial displacement of the mobile core of magnetic material just like the fixed core.

Le noyau mobile est ainsi susceptible de coulisser entre une position arrière de repos dans laquelle il dépasse axialement au travers d'une première extrémité axiale de la carcasse du contacteur, et une position avant active dans laquelle, sous l'effet du champ magnétique induit par le bobinage, il est presque entièrement reçu à l'intérieur du bobinage.The movable core is thus capable of sliding between a rear rest position in which it protrudes axially through a first axial end of the contactor casing, and an active front position in which, under the effect of the magnetic field induced by the winding, it is almost entirely received inside the winding.

La première extrémité axiale est constituée par le fond troué centralement de la carcasse, qui comporte une partie tubulaire d'orientation axiale se raccordant à la périphérie externe du fond d'orientation transversale.The first axial end is formed by the centrally perforated bottom of the carcass, which comprises a tubular portion of axial orientation connecting to the outer periphery of the transversely oriented bottom.

Un ressort hélicoïdal de compression rappelle élastiquement le noyau mobile vers sa position de repos en prenant appui sur la face arrière externe du fond tournée à l'opposé du bobinage. Ce fond sert également, à la faveur de son ouverture centrale, de support à un tube de guidage porté également par le support du bobinage. Le tube de guidage est par sa périphérie interne en contact intime avec la périphérie externe du noyau mobile de forme cylindrique. Ce noyau est doté centralement d'un trou borgne pour logement d'une tige d'actionnement et d'un ressort dent contre dent agissant entre le noyau mobile et une tête de la tige dépassant du noyau mobile pour porter un axe d'articulation pour la fourchette du démarreur en prise avec le lanceur de celui-ci.A helical compression spring resiliently removes the movable core towards its rest position by resting on the outer rear face of the bottom turned away from the winding. This bottom also serves, thanks to its central opening, support for a guide tube also carried by the winding support. The guide tube is at its inner periphery in intimate contact with the outer periphery of the movable core of cylindrical shape. This core is centrally provided with a blind hole for housing an actuating rod and a tooth against tooth spring acting between the movable core and a head of the rod protruding from the movable core to carry a hinge pin for the starter fork engaged with the starter of the starter.

La carcasse est fermée à sa seconde extrémité axiale opposée à son fond par le capot.The carcass is closed at its second axial end opposite its bottom by the hood.

Le bloc support comporte une jupe annulaire cylindrique, qui permet son centrage et sa fixation à la seconde extrémité ouverte de la carcasse, et un fond transversal qui ferme axialement le contacteur.The support block comprises a cylindrical annular skirt, which allows its centering and attachment to the second open end of the carcass, and a transverse bottom which axially closes the contactor.

Avantageusement, le support est en matière plastique.Advantageously, the support is made of plastic.

Les bornes sont sensiblement diamétralement opposées sur le fond du capot, de part et d'autre de l'axe de symétrie axiale du contacteur.The terminals are substantially diametrically opposed on the bottom of the cover, on either side of the axis of axial symmetry of the contactor.

Les bornes comportent chacune une tête de contact agencée à l'intérieur du contacteur, contre le fond transversal du bloc support, et un plot de raccordement, en partie fileté et qui s'étend axialement au travers du fond transversal de manière à déboucher à l'extérieur du contacteur.The terminals each comprise a contact head arranged inside the contactor, against the transverse bottom of the support block, and a connection pad, partly threaded and which extends axially through the transverse bottom so as to open at the bottom. outside the contactor.

La première borne est prévue pour être reliée à la borne positive d'une batterie d'accumulateurs du véhicule via un interrupteur usuellement actionné par la clé de contact ou par tout autre moyen. La seconde borne est prévue pour recevoir un câble d'alimentation du moteur électrique du démarreur.The first terminal is intended to be connected to the positive terminal of a battery of the vehicle via a switch usually actuated by the ignition key or by any other means. The second terminal is provided to receive a power cable of the electric motor of the starter.

Le bloc support est fixé, par sertissage étanche, à la seconde extrémité de la carcasse. Pour ce faire cette carcasse présente à sa seconde extrémité, constituée par l'extrémité libre de sa partie tubulaire, un épaulement transversal pour appui du noyau fixe, une portion cylindrique de centrage du noyau fixe et une portion cylindrique de faible épaisseur, dite portion de sertissage, destinée à la fixation par sertissage du capot. Plus précisément l'extrémité de la portion est rabattue vers l'intérieur au contact d'une portion externe de forme tronconique du capot pour serrage du noyau fixe entre l'épaulement et l'extrémité libre du capot. La portion d'orientation axiale s'étend axialement, en direction opposée au fond, au-delà de l'épaulement.The support block is fixed, by tight crimping, to the second end of the carcass. To do this carcass has at its second end, constituted by the free end of its tubular portion, a transverse shoulder for supporting the fixed core, a cylindrical centering portion of the fixed core and a cylindrical portion of small thickness, said portion of crimping, intended for fixing by crimping the cover. More precisely, the end of the portion is folded inwards in contact with an outer portion of frustoconical shape of the cap for clamping the fixed core between the shoulder and the free end of the cover. The axially oriented portion extends axially, in the opposite direction to the bottom, beyond the shoulder.

Un contact mobile, constitué d'une plaque, est susceptible d'être déplacé axialement à l'intérieur de l'espace délimité par la paroi annulaire et le fond du capot, entre une position arrière de repos dans laquelle il est en appui contre le noyau fixe et une position avant active dans laquelle le contact mobile est en appui simultanément contre les têtes des bornes de manière à établir entre ces deux bornes un raccordement électrique qui permet d'alimenter le moteur du démarreur en courant électrique provenant de la batterie d'accumulateur du véhicule.A movable contact, consisting of a plate, is capable of being displaced axially within the space delimited by the annular wall and the bottom of the cover, between a rear rest position in which it bears against the stationary core and an active front position in which the movable contact is simultaneously pressed against the terminal heads so as to establish between these two terminals an electrical connection which supplies power to the starter motor electric current from the battery of accumulator of the vehicle.

Le déplacement axial du contact mobile est commandé par une tige de commande, qui est guidée axialement, et dont les déplacements sont commandés par le noyau mobile.The axial displacement of the movable contact is controlled by a control rod, which is guided axially, and whose displacements are controlled by the movable core.

De manière connue, le contact mobile est monté coulissant sur la tige de commande.In known manner, the movable contact is slidably mounted on the control rod.

La tige de commande entraîne le contact mobile de sa position de repos vers sa position active par l'intermédiaire d'un ressort de contact qui est en appui d'un côté contre un épaulement de la tige de commande et de l'autre côté contre la face transversale arrière du contact mobile.The control rod causes the movable contact from its rest position to its active position by means of a contact spring which is supported on one side against a shoulder of the control rod and on the other side against the rear transverse face of the moving contact.

Un ressort de rappel permet de ramener la tige de commande et le contact mobile en position de repos.A return spring makes it possible to return the control rod and the moving contact to the rest position.

Le ressort de rappel est en appui au fond d'un logement cylindrique agencé au centre du fond transversal du capot et il sollicite axialement une rondelle métallique (non visible) qui est en appui contre un second épaulement de la tige de commande et contre la face transversale avant du contact mobile, qui coopère par ailleurs avec les bornes.The return spring is supported at the bottom of a cylindrical housing arranged in the center of the transverse bottom of the cover and it axially solicits a metal washer (not visible) which bears against a second shoulder of the control rod and against the face transverse front of the movable contact, which also cooperates with the terminals.

En position de repos le contact mobile dans une forme de réalisation vient en contact avec le noyau fixe avantageusement doté de protubérances à cet effet.In the rest position the movable contact in one embodiment comes into contact with the fixed core advantageously provided with protuberances for this purpose.

Il est intéressant d'utiliser des circuits électroniques de commande de l'alimentation du bobinage du contacteur. De tels circuits électroniques permettent d'avoir une parfaite maîtrise du déplacement du noyau mobile du contacteur. Ainsi le contacteur est ici électronisé et comporte une carte à circuits imprimés portant des composants électroniques et qui s'étend dans un plan transversal et axialement entre le noyau fixe et une paroi transversale appartenant à une cloison d'étanchéité comme décrit dans les documents EP A 0 751 545 et la demande FR 99 09977 déposée le 30/07/1999. Avantageusement, la cloison d'étanchéité est réalisée par moulage en matériau plastique en permettant ainsi une insertion à force dans le capot réalisé avantageusement dans le même matériau. L'étanchéité est obtenue par la déformation du matériau.It is interesting to use electronic circuits for controlling the power supply of the winding of the contactor. Such electronic circuits make it possible to have perfect control over the displacement of the moving core of the contactor. Thus the contactor is here electronically and comprises a printed circuit board carrying electronic components and which extends in a transverse plane and axially between the fixed core and a transverse wall belonging to a sealing partition as described in documents EP A 0 751 545 and the application FR 99 09977 filed on 30/07/1999. Advantageously, the sealing partition is made by molding plastic material thus allowing a force insertion into the cover advantageously made of the same material. The seal is obtained by the deformation of the material.

Ainsi, la tige de commande, qui relie le noyau magnétique mobile au contact mobile, traverse axialement à guidage un fût axial tubulaire de la cloison d'étanchéité.Thus, the control rod, which connects the movable magnetic core to the movable contact, passes axially guiding a tubular axial shaft of the sealing wall.

Le fût axial est étagé en diamètre et présente un tronçon avant et arrière comme décrit dans la demande FR 99 09977.The axial shaft is stepped in diameter and has a front and rear section as described in the application FR 99 09977.

Le tronçon annulaire axial arrière est destiné à être reçu à l'intérieur de l'alésage du noyau fixe avec lequel il coopère de manière étanche.The rear axial annular section is intended to be received inside the bore of the fixed core with which it cooperates sealingly.

Une connexion métallique peut être insérée dans la cloison étanche. La connexion métallique assure le contact électrique entre le noyau fixe et le contact mobile lorsqu'il est en position de repos.A metal connection can be inserted into the bulkhead. The metal connection provides electrical contact between the fixed core and the movable contact when in the rest position.

Cette connexion comporte une languette qui dépasse axialement vers l'avant de la cloison et qui est pliée radialement de façon à s'étendre le long de la face transversale avant de la cloison pour assurer le contact électrique avec le contact mobile lorsque ce dernier est en position de repos. Cette languette est solidaire d'une embase en forme de rondelle traversée axialement par le tronçon annulaire axial arrière du fût de la cloison. L'embase assure le contact électrique avec le noyau fixe. A cet effet le fût comporte un trou pour le passage de la languette. Ce trou est formé dans l'épaulement réalisé à la faveur du changement de diamètre entre les tronçons arrière et avant du fût de la cloison. Pour plus de précisions on se reportera à la dite demande FR 99 09977.This connection comprises a tongue which protrudes axially towards the front of the partition and which is folded radially so as to extend along the transverse front face of the partition to ensure electrical contact with the moving contact when the latter is in contact with the moving contact. rest position. This tongue is integral with a washer-shaped base axially traversed by the rear axial annular section of the barrel of the partition. The base ensures electrical contact with the fixed core. For this purpose the barrel has a hole for the passage of the tongue. This hole is formed in the shoulder formed by the change of diameter between the rear and front sections of the shaft of the partition. For more details, see the aforementioned application FR 99 09977.

Le contact mobile en position de repos est donc selon les formes de réalisation en contact soit avec le noyau fixe, notamment lorsqu'il n'est pas prévu de carte électronique à l'intérieur du contacteur, soit avec une cloison d'étanchéité directement ou indirectement par l'intermédiaire d'une pièce en contact électrique avec le noyau fixe.The movable contact in the rest position is therefore according to the embodiments in contact with the fixed core, particularly when there is no electronic card inside the contactor, or with a sealing partition directly or indirectly via a piece in electrical contact with the fixed core.

Il résulte de ce qui précède que les épaisseurs du fond et de la partie tubulaire de la carcasse sont déterminées en fonction des besoins du passage du flux magnétique. En pratique pour éviter une consommation trop grande de courant et un volume de cuivre trop important au niveau du bobinage, il est nécessaire de ne pas trop saturer le circuit magnétique, donc d'avoir une section de passage de flux magnétique suffisamment grande.It follows from the foregoing that the thicknesses of the bottom and the tubular portion of the carcass are determined according to the needs of the passage of the magnetic flux. In practice, in order to avoid excessive power consumption and a large copper volume at the winding, it is necessary not to over saturate the magnetic circuit, so to have a sufficiently large magnetic flux passage section.

Le fond a ainsi une épaisseur relativement importante de l'ordre de 3 à 6 mm. L'épaisseur de la partie tubulaire est plus faible car la section de passage du flux magnétique est répartie sur une plus grande circonférence. Cette épaisseur est de l'ordre de 2 à 4 mm. Ces épaisseurs correspondent à une carcasse obtenue par emboutissage.The bottom thus has a relatively large thickness of the order of 3 to 6 mm. The thickness of the tubular portion is lower because the passage section of the magnetic flux is distributed over a larger circumference. This thickness is of the order of 2 to 4 mm. These thicknesses correspond to a carcass obtained by stamping.

La portion de sertissage a usuellement une épaisseur de 0,4mm à 1mm ; la portion tubulaire comportant intérieurement trois diamètres différents pour notamment formation de l'épaulement à la faveur d'un changement de diamètre.The crimping portion usually has a thickness of 0.4 mm to 1 mm; the tubular portion internally having three different diameters, in particular for forming the shoulder by means of a change in diameter.

La carcasse est réalisée dans une première étape par emboutissage, puis dans une deuxième opération est l'objet d'opérations de reprise d'usinage et enfin subit dans une troisième étape un traitement de surface pour réaliser une protection contre la corrosion et donner un bon aspect à cette carcasse visible de l'extérieur notamment lorsque le démarreur est monté sur véhicule.The carcass is made in a first step by stamping, then in a second operation is the object of machining operations and finally undergoes in a third step a surface treatment to provide protection against corrosion and give a good appearance to this carcass visible from the outside, especially when the starter is mounted on a vehicle.

Les opérations de reprise d'usinage sont nécessaires car, d'une part, il faut réaliser une mise à longueur de la carcasse, et d'autre part, réaliser les étagements internes en diamètre de la partie tubulaire pour formation de l'épaulement et de la portion de sertissage.The machining resumption operations are necessary because, on the one hand, it is necessary to make a length of the carcass, and on the other hand, to achieve the internal diameters of the tubular portion for formation of the shoulder and crimping portion.

Le traitement de surface doit être bon conducteur d'électricité car la face externe du fond (la face arrière) sert au retour à la masse du bobinage, qui réalise une fonction de maintien du contact mobile après la fermeture de celui-ci lorsque le moteur électrique du démarreur tourne, et dans le cas d'un contacteur électronisé de retour à la masse du circuit électronique. Pour mémoire on notera que le fond sert à la fixation du contacteur sur le carter du démarreur.The surface treatment must be a good conductor of electricity because the external face of the bottom (the rear face) serves to return the earth of the winding, which performs a function of maintaining the movable contact after closing thereof when the motor starter motor turns, and in the case of an electronic contactor back to earth the electronic circuit. Note that the bottom is used for fixing the contactor on the starter housing.

Ces trois étapes nécessitent de lourds investissements, notamment en ce qui concerne l'opération d'emboutissage profond et sont rarement effectuées dans un même lieu géographique compte tenu notamment de leur différence.These three stages require heavy investments, especially with regard to the deep drawing operation. and are rarely performed in the same geographical location, especially in view of their difference.

C'est donc un but de l'invention de réaliser de manière plus simple et économique la carcasse.It is therefore an object of the invention to provide the carcass more simply and economically.

Suivant l'invention un contacteur doté d'une carcasse en matériau magnétique du type sus-indiqué est caractérisé en ce que la carcasse est réalisée en deux pièces à savoir une première pièce d'orientation transversale, dite fond, constituant le fond troué et un tube d'orientation axiale présentant la portion de sertissage et l'épaulement et en ce que le tube est fixé au fond.According to the invention a contactor provided with a carcass made of magnetic material of the type indicated above is characterized in that the carcass is made in two pieces, namely a first part of transverse orientation, called the bottom, constituting the perforated bottom and a axial orientation tube having the crimping portion and the shoulder and that the tube is fixed to the bottom.

Grâce à l'invention chacun des composants élémentaires ne nécessitent que des moyens de production simples et peu coûteux.Thanks to the invention each of the elementary components require only simple and inexpensive means of production.

En outre le coût de matière est réduit par rapport à une réalisation par emboutissage profond d'une tôle nécessitant une qualité métallurgique particulière de la tôle. Par rapport à une réalisation en une pièce par extrusion on réduit le coût de la carcasse et les investissements.In addition the material cost is reduced compared to a deep drawing realization of a sheet requiring a particular metallurgical quality of the sheet. Compared to a one-piece extrusion production, the cost of the carcass and the investments are reduced.

De plus la première pièce constituant le fond peut avoir l'épaisseur souhaitée pour un bon passage du flux magnétique. L'épaisseur du fond est ainsi dans une forme de réalisation de 1,3 à 2 fois l'épaisseur du tube. L'épaisseur du fond peut donc être plus importante que dans l'art antérieur.In addition the first piece constituting the bottom may have the desired thickness for a good passage of the magnetic flux. The thickness of the bottom is thus in one embodiment of 1.3 to 2 times the thickness of the tube. The thickness of the bottom may therefore be greater than in the prior art.

Le tube avantageusement subit par avance l'opération de traitement de surface.The tube advantageously undergoes in advance the surface treatment operation.

Le fond n'a pas besoin de subir un traitement de surface esthétique car il est moins visible que le tube externe rendu esthétique, notamment point de vue couleur et aspect, par son traitement de surface convenant également bien à la résistance à la corrosion, en sorte que l'on a un plus grand nombre de choix en ce qui concerne le traitement de surface du tube.The bottom does not need to undergo an aesthetic surface treatment because it is less visible than the outer tube made aesthetic, especially in terms of color and appearance, by its surface treatment equally suitable for corrosion resistance, so that we have a greater number of choices with regard to the surface treatment of the tube.

En outre comme le fond est en contact avec le carter du démarreur, portant le moteur électrique et le contacteur, on peut se passer d'un traitement de surface du fond car le risque de corrosion est faible du fait que le carter du démarreur est en alliage d'aluminium. Dans le cas où le démarreur est soumis à un environnement plus agressif du point de vue de la corrosion et/ou une protection s'impose on choisira la nature du traitement qui convient le mieux sans souci d'esthétique.In addition, since the bottom is in contact with the starter housing, carrying the electric motor and the contactor, it is possible to do without a surface treatment of the bottom because the risk of corrosion is low because the starter housing is in aluminum alloy. In the case where the starter is subjected to a more aggressive environment from the point of view of the corrosion and / or a protection is necessary one will choose the nature of the treatment which is the best suit without concern of esthetics.

Le tube est coupé à la longueur voulue et la formation de l'épaulement et de la portion de sertissage est réalisée avantageusement avant la fixation du fond avec le tube pour éviter une opération de reprise d'usinage.The tube is cut to the desired length and the formation of the shoulder and the crimping portion is advantageously performed before fixing the bottom with the tube to avoid a machining recovery operation.

Cette disposition facilite la standardisation car le contacteur peut être électronisé on non ce qui influe sur la longueur du capot et de la portion de sertissage. Le tube est donc une pièce d'adaptation à cette variation de longueur et dépasse plus ou moins pour faire varier la longueur de la portion de sertissage selon les applications, ce qui permet de diminuer le nombre de pièces de référence à stocker. On peut donc réaliser par avance un tube avec une portion de sertissage de la plus grande longueur puis réaliser une mise à longueur selon les applications.This arrangement facilitates standardization because the contactor can be electronically or not, which affects the length of the cover and the crimping portion. The tube is a piece of adaptation to this variation in length and exceeds more or less to vary the length of the crimping portion according to the applications, which reduces the number of reference parts to store. It is therefore possible in advance to make a tube with a crimping portion of the greatest length and then to make a length according to the applications.

On peut rassembler dans un même lieu géographique les moyens de production ce qui permet de diminuer les surcoûts de transport et de gestion de production.The means of production can be brought together in the same geographical location, thereby reducing the additional costs of transport and production management.

De plus aucune opération de reprise d'usinage n'est nécessaire puisque le tube présente par avance l'épaulement et la portion de sertissage. Aucun emboutissage profond de pièces n'est nécessaire.In addition, no machining resumption operation is necessary since the tube has the shoulder and the crimping portion in advance. No deep stamping of parts is necessary.

Avantageusement le tube recouvre au moins en partie la périphérie externe du fond, qui ainsi peut ne pas être visible.Advantageously, the tube covers at least part of the outer periphery of the bottom, which may not be visible.

Cette disposition facilite la fixation du tube avec le fond car un centrage préalable est réalisé entre le fond et le tube.This arrangement facilitates the fixing of the tube with the bottom because a pre-centering is made between the bottom and the tube.

La première pièce formant le fond consiste dans une forme de réalisation en une simple rondelle. En variante le fond est de forme rectangulaire, carrée ou polygonale. Ceci est rendu possible car on peut aisément donner une forme complémentaire à l'extrémité concernée du tube voire même à l'ensemble du tube. Ce tube peut donc avoir une section de forme circulaire, rectangulaire, polygonale ou autre.The first piece forming the bottom consists of an embodiment in a simple washer. Alternatively the bottom is rectangular, square or polygonal. This is made possible because it can easily give a complementary shape to the relevant end of the tube or even to the entire tube. This tube may therefore have a section of circular, rectangular, polygonal or other shape.

La fixation du tube avec son fond est réalisée avantageusement à l'intérieur du tube et donc de la carcasse pour protéger cette fixation et pour des raisons esthétiques.Fixing the tube with its bottom is advantageously carried out inside the tube and thus the carcass to protect this fixation and for aesthetic reasons.

Dans une forme de réalisation le fond et le tube sont assemblés, c'est-à-dire fixés l'un à l'autre, par apport indirect de chaleur, notamment par soudage laser ou par faisceau d'électrons permettant un échauffement très localisé n'affectant pas la périphérie externe du tube lorsque ce soudage est réalisé à l'intérieur de la carcasse. En outre aucun apport de métal n'est nécessaire et on obtient une fixation solide, étanche avec une bonne continuité du circuit magnétique et sans protubérance du cordon de soudure.In one embodiment the bottom and the tube are assembled, that is to say fixed to each other, by indirect heat supply, in particular by laser welding or by electron beam allowing a very localized heating. not affecting the outer periphery of the tube when this welding is performed inside the carcass. In addition, no addition of metal is necessary and a solid, sealed fastening with a good continuity of the magnetic circuit and without protuberance of the weld bead is obtained.

Ce soudage est réalisé dans une forme de réalisation de l'intérieur du tube avec un tir oblique dirigé vers la périphérie externe du fond. En variante le soudage est réalisé axialement ou radialement.This welding is performed in one embodiment of the interior of the tube with an oblique shot directed towards the outer periphery of the bottom. In a variant, the welding is carried out axially or radially.

L'invention propose également un démarreur conforme aux enseignements de l'invention.The invention also proposes a starter according to the teachings of the invention.

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 à la figure 1 qui est une vue en coupe axiale de la carcasse selon l'invention.Other features and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to FIG. 1 which is an axial sectional view of the carcass according to the invention.

La carcasse cylindrique de la figure 1 est destinée à remplacer la carcasse de l'état de la technique. Cette carcasse, d'axe de symétrie axiale A-A, autorise donc un passage du flux magnétique comme celle de l'état de la technique et comporte des pièces en matériau magnétique chacune de forme simple et économique.The cylindrical carcass of Figure 1 is intended to replace the carcass of the state of the art. This carcass, axial axis of symmetry A-A, thus allows a passage of the magnetic flux as that of the state of the art and comprises parts of magnetic material each of simple and economical form.

Plus précisément suivant une caractéristique de l'invention la carcasse 1 est réalisée en deux pièces à savoir une première pièce 11 d'orientation transversale, dite fond, constituant le fond troué et un tube 10 d'orientation axiale présentant à l'une de ses extrémités axiales 10a la portion de sertissage 13 pour le capot de l'état de la technique et l'épaulement 14 pour le noyau fixe de l'état de la technique. L'épaisseur du fond 12 est supérieure à celle du tube 10.More precisely according to a characteristic of the invention, the carcass 1 is made in two pieces, namely a first piece 11 of transverse orientation, called the bottom, constituting the perforated bottom, and a tube 10 of axial orientation presenting to one of its axial ends 10a the crimping portion 13 for the cover of the state of the art and the shoulder 14 for the fixed core of the state of the art. The thickness of the bottom 12 is greater than that of the tube 10.

Ces deux pièces 11,10 sont ici en tôle à base d'acier doux. Dans cette figure le tube 10 est d'épaisseur constante sauf au niveau de sa première extrémité axiale 10a de diamètre interne étagé pour formation d'une portion cylindrique de guidage et de centrage pour la périphérie externe du noyau fixe et de la portion cylindrique de sertissage 13 de plus faible épaisseur que la portion cylindrique de guidage et de centrage délimitée par l'épaulement 14. Un autre épaulement est formé à la faveur du changement de diamètre entre lesdites portions cylindriques. La portion de sertissage 13 est la plus éloignée du fond 11. La première extrémité 10a est donc une extrémité à deux emboîtages respectivement pour le noyau fixe et pour le capot.These two parts 11, 10 are here made of sheet steel based on mild steel. In this figure the tube 10 is of constant thickness except at its first axial end 10a stepped internal diameter for forming a cylindrical portion for guiding and centering for the outer periphery of the fixed core and the cylindrical crimping portion 13 of smaller thickness than the cylindrical portion of guiding and centering defined by the shoulder 14. Another shoulder is formed by the change of diameter between said cylindrical portions. The crimping portion 13 is furthest from the bottom 11. The first end 10a is therefore a two-socket end respectively for the fixed core and the hood.

Le tube 10, suivant une autre caractéristique de l'invention, est fixé sur le fond 11 au niveau de sa deuxième extrémité axiale 10b d'épaisseur constante dans cette figure 1.The tube 10, according to another characteristic of the invention, is fixed on the bottom 11 at its axial end 10b of constant thickness in this FIG.

Le fond 11 remplace le fond de l'état de la technique et est donc troué ici centralement pour le passage du noyau mobile. Ce fond 11 a la même épaisseur que le fond de l'état de la technique et consiste ici en simple rondelle 11. Le tube 10 remplace la partie tubulaire de l'état de la technique a donc les mêmes diamètres interne et externe.The bottom 11 replaces the bottom of the state of the art and is therefore here pierced centrally for the passage of the mobile core. This bottom 11 has the same thickness as the bottom of the state of the art and here consists of simple washer 11. The tube 10 replaces the tubular part of the state of the art therefore has the same internal and external diameters.

L'épaisseur du tube 1, entre son extrémité 10b et son épaulement 14, est ainsi égale à l'épaisseur de la partie tubulaire de l'état de la technique.The thickness of the tube 1, between its end 10b and its shoulder 14, is thus equal to the thickness of the tubular part of the state of the art.

L'épaisseur et la longueur de la portion de sertissage 13 du tube 10 sont égales à celles de la portion de l'état de la technique pour pouvoir réaliser la fixation par sertissage du capot en contact avec le noyau fixe.The thickness and the length of the crimping portion 13 of the tube 10 are equal to those of the portion of the state of the art to be able to achieve the fixing by crimping the cover in contact with the fixed core.

Le diamètre interne et la longueur de la portion cylindrique de centrage et de guidage du tube 10 sont égales à ceux de la portion de guidage et de centrage de l'état de la technique. La longueur du tube 10 est donc déterminée en conséquence. Ici le tube 10 présente une section circulaire.The internal diameter and the length of the cylindrical centering and guiding portion of the tube 10 are equal to those of the guiding and centering portion of the state of the art. The length of the tube 10 is therefore determined accordingly. Here the tube 10 has a circular section.

En variante les portions de sertissage 13 du capot et de centrage du noyau fixe peuvent être de même diamètre interne en sorte que la première extrémité 10a ne comporte qu'un emboîtage délimité par la portion de sertissage s'étendant jusqu'à l'épaulement 14. Dans cette variante le diamètre externe du noyau fixe est augmenté.As a variant, the crimping portions 13 of the cover and the centering of the fixed core may have the same internal diameter so that the first end 10a has only a casing delimited by the crimping portion extending up to the shoulder 14. In this variant the outer diameter of the fixed core is increased.

Dans tous les cas le tube externe 10 présente une première extrémité 10a, qui s'étend, en direction opposée au fond 11, en saillie axiale par rapport à l'épaulement 14 pour constituer la portion 13 de sertissage.In all cases the outer tube 10 has a first end 10a, which extends, in the opposite direction to the bottom 11, projecting axially relative to the shoulder 14 to form the portion 13 of crimping.

Le tube 10 est destiné à assurer une liaison électrique entre le fond 11 et le noyau fixe. Le tube 10 est mis à longueur pour avoir la même longueur axiale que celle de la carcasse de l'état de la technique et donc pour avoir la même position axiale pour les extrémités libres des portions de sertissage 13.The tube 10 is intended to provide an electrical connection between the bottom 11 and the fixed core. The tube 10 is set to length to have the same axial length as that of the carcass of the state of the art and therefore to have the same axial position for the free ends of the crimping portions 13.

Le tube 10 entoure et donc recouvre au moins en partie le fond 11 pour faciliter l'assemblage et la fixation du fond 11 avec le tube 10. Dans la figure 1 le tube 10 est en contact par la périphérie interne de sa deuxième extrémité axiale 10b avec la périphérie externe du fond 11 en sorte que le fond 11 est masqué par le tube 10, qui subit par avance un traitement de surface pour lui conférer un aspect esthétique et pour résister à la corrosion. Les possibilités de choix de ce traitement en qualité et en coûts sont beaucoup plus grandes que celles de la carcasse de l'état de la technique du fait que le tube 10 et le fond 11 n'appartiennent pas à la même pièce.The tube 10 surrounds and therefore covers at least part of the bottom 11 to facilitate assembly and fixing of the bottom 11 with the tube 10. In Figure 1 the tube 10 is in contact with the inner periphery of its second axial end 10b with the outer periphery of the bottom 11 so that the bottom 11 is masked by the tube 10, which undergoes in advance a surface treatment to give it an aesthetic appearance and to resist corrosion. The possibilities of choice of this treatment in terms of quality and cost are much greater than those of the carcass of the state of the art because the tube 10 and the bottom 11 do not belong to the same part.

Le fond 11 peut ne pas subir de traitement de surface car il est destiné à venir en contact avec le carter du démarreur à base d'aluminium et peu sujet à la corrosion. Néanmoins dans des conditions climatiques sévères d'utilisation le fond peut subir un traitement de surface qui convient le mieux sans souci d'esthétique.The bottom 11 may not undergo a surface treatment because it is intended to come into contact with the housing of the aluminum-based starter and little subject to corrosion. However, in severe climatic conditions of use the bottom may undergo a surface treatment that is best without aesthetic concern.

Aucun traitement postérieur à l'assemblage des pièces 10,11 n'est nécessaire.No post-assembly processing of parts 10,11 is necessary.

Cet assemblage est réalisé en fixant la deuxième extrémité axiale 10b du tube 10 au fond 11 et est facilité par le contact intime de la périphérie interne de l'extrémité 10b avec la périphérie externe du fond 11 en forme de rondelle. Un centrage préalable à la fixation est ainsi réalisé entre les pièces 10,11.This assembly is carried out by fixing the second axial end 10b of the tube 10 to the bottom 11 and is facilitated by the intimate contact of the inner periphery of the end 10b with the outer periphery of the bottom 11 in the form of a washer. Centering prior to attachment is thus achieved between the parts 10,11.

Dans le cas où des questions d'encombrement ne se posent pas on peut augmenter légèrement le diamètre du fond 11 et de l'extrémité 10b pour formation d'un épaulement dans le tube 10 au niveau du changement de diamètre entre l'extrémité 10b et la partie principale du tube 10. Dans ce cas on peut allonger l'extrémité 10b et rabattre celle-ci au contact de la face arrière du fond 11 en contact par sa face avant avec ledit épaulement. La fixation entre les pièces 10,11 est donc réalisée dans une forme de réalisation par sertissage. Si besoin est au moins un point de soudage est réalisé entre la face arrière du fond 11 et la partie rabattue de l'extrémité 10b pour éviter toute rotation entre les pièces 10,11.In the case where congestion issues do not arise can increase slightly the diameter of the bottom 11 and the end 10b for forming a shoulder in the tube 10 at the diameter change between the end 10b and the main part of the tube 10. In this case we can extend the end 10b and fold it in contact with the rear face of the bottom 11 in contact with its front face with said shoulder. Fixing between the parts 10,11 is therefore carried out in one embodiment by crimping. If necessary is at least one welding point is made between the rear face of the bottom 11 and the folded portion of the end 10b to prevent rotation between the parts 10,11.

A la figure 1 la fixation du tube 10 sur le fond 11 est réalisée par soudage axial en 12, par exemple par apport indirect de chaleur du type laser ou par faisceau d'électrons, au niveau de la face arrière du fond 11 entre les périphéries externe et interne respectivement du fond 11 et de la seconde extrémité axiale 10b adjacente du tube 10. Ce type de soudure 12 est en variante réalisé radialement entre deux faces transversales appartenant respectivement au fond 11 et à l'extrémité adjacente 10b du tube 10. Dans cette variante le fond 11 a une forme de bouchon avec une tête épaulée délimitant la face transversale concernée du fond et un corps pénétrant dans le tube 10 en étant en contact avec une portion de la périphérie interne de l'extrémité 10b dont la tranche terminale constitue l'autre face transversale.In FIG. 1, the tube 10 is fixed to the bottom 11 by axial welding at 12, for example by indirect heat transfer of the laser or electron beam type, at the rear face of the base 11 between the peripheries. external and internal respectively of the bottom 11 and the second axial end 10b adjacent the tube 10. This type of weld 12 is alternatively made radially between two transverse faces respectively belonging to the bottom 11 and the adjacent end 10b of the tube 10. In this variant the bottom 11 has a plug shape with a shouldered head delimiting the relevant transverse face of the bottom and a body penetrating into the tube 10 being in contact with a portion of the inner periphery of the end 10b whose terminal portion constitutes the other transverse face.

En variante l'extrémité 10b du tube 10 entoure au moins en partie le fond 11 comme dans la figure 1 et la fixation est réalisée de l'intérieur du tube 10 et de la carcasse au niveau de la périphérie externe de la face avant du fond 11 et de la périphérie interne adjacente de l'extrémité 10b pour notamment un aspect esthétique et protéger la fixation contre les agressions externes. Cette fixation est réalisée par soudage. Ladite soudure 12 est réalisée de l'intérieur du fond 11 et de la carcasse au niveau de la périphérie externe de la face avant du fond 11 avec un tir oblique.Alternatively the end 10b of the tube 10 surrounds at least part of the bottom 11 as in Figure 1 and the fixing is performed from the inside of the tube 10 and the carcass at the outer periphery of the front face of the bottom 11 and the adjacent inner periphery of the end 10b for particular aesthetic appearance and protect the binding against the external aggression. This fixing is performed by welding. Said weld 12 is made from the inside of the bottom 11 and the carcass at the outer periphery of the front face of the bottom 11 with an oblique shot.

Dans ces réalisations on n'augmente pas l'encombrement, les pièces 10,11 ont une forme simple et la fixation est réalisée localement par apport indirect de chaleur ici par un soudage 12 propre du type laser ou par faisceau d'électrons. Les densités d'énergie mises en oeuvre dans ce genre de soudage sont très élevées en sorte que les traitements de surface sont détruits dans la zone de soudage et ne gênent pas la soudure. L'échauffement est très localisé et n'affecte pas les traitements de surface du reste de la pièce concernée notamment de la périphérie externe du tube 10, qui conserve ainsi son aspect esthétique.In these embodiments, the space requirement is not increased, the parts 10, 11 have a simple shape and the fixing is carried out locally by indirect heat supply here by a welding 12 of the laser or electron beam type. The energy densities used in this type of welding are very high so that the surface treatments are destroyed in the welding zone and do not interfere with the welding. The heating is very localized and does not affect the surface treatments of the rest of the part concerned in particular of the outer periphery of the tube 10, which thus retains its aesthetic appearance.

D'une manière générale la soudure est réalisée sans apport indirect de métal pour conserver les dimensions de la carcasse et éviter une protubérance de la soudure. Le soudage du type laser ou par bombardement électronique, d'une manière générale par apport indirect de chaleur, est bien adapté à cet effet.In general, the welding is carried out without the indirect addition of metal to maintain the dimensions of the carcass and to avoid a protuberance of the weld. The welding of the laser type or electron bombardment, generally by indirect heat input, is well suited for this purpose.

Le tube interne 10 consiste en un tronçon de tube ou en variante en une douille roulée et soudée ou roulée et agrafée. Ce tube sert à renforcer la section de passage du flux magnétique passant également par le fond 11. Bien entendu avantageusement on forme par avance l'épaulement 14 et la portion de sertissage 13 pour éviter après fixation du fond 11 une opération de reprise d'usinage.The inner tube 10 consists of a tube section or alternatively a sleeve rolled and welded or rolled and stapled. This tube serves to reinforce the passage section of the magnetic flux also passing through the bottom 11. Of course advantageously is formed in advance the shoulder 14 and the crimping portion 13 to avoid after fixing the bottom 11 a resumption of machining operation .

Le contacteur équipé de la carcasse selon l'invention se monte dans les modes de réalisation représentés sur un démarreur de véhicule automobile.The contactor equipped with the carcass according to the invention mounts in the embodiments shown on a motor vehicle starter.

Bien entendu la présente invention n'est pas limitée aux exemples de réalisations décrits. Ainsi il est possible d'augmenter l'épaisseur du fond 11, qui peut aisément avoir une épaisseur de 1,3 à 2 fois l'épaisseur du tube 10. D'autres moyens de fixation peuvent être envisagés car d'une manière générale on recherche à rendre imperdable le tube 10 et le fond 11 pour constituer une carcasse manipulable et transportable.Of course, the present invention is not limited to the embodiments described. Thus it is possible to increase the thickness of the bottom 11, which can easily have a thickness of 1.3 to 2 times the thickness of the tube 10. Other fixing means can be envisaged because in a manner Generally it is sought to make captive the tube 10 and the bottom 11 to form a carcass manipulable and transportable.

En variante le tube 10 n'entoure pas le fond et la fixation du tube 10 sur le fond 11 est réalisée par soudage radial 12, par exemple par apport indirect de chaleur du type laser ou par faisceau d'électrons, au niveau de la périphérie externe du fond 11 entre la face avant du fond 11 et la tranche de l'extrémité 10b du tube 10. Dans cette variante les diamètres externes du fond 11 et du tube 10 sont égaux.In a variant, the tube 10 does not surround the bottom and the fixing of the tube 10 on the bottom 11 is achieved by radial welding 12, for example by indirect heat input of the laser or electron beam type, at the periphery. external of the bottom 11 between the front face of the bottom 11 and the edge of the end 10b of the tube 10. In this variant the outer diameters of the bottom 11 and the tube 10 are equal.

Lorsque des conditions d'encombrement, notamment axial, ne se posent pas le tube 10 peut recouvrir la périphérie externe du fond 11 comme à la figure 1 et se prolonger pour s'étendre en saillie axiale par rapport à la face arrière du fond11. La fixation du tube 10 avec le fond 11 est alors réalisée par soudage de l'intérieur du tube 10 avec un tir oblique entre dans ce cas la périphérie externe de la face arrière du fond 10 et la périphérie interne adjacente de l'extrémité 10b du tube 10.When congestion conditions, particularly axial, do not arise the tube 10 may cover the outer periphery of the bottom 11 as in Figure 1 and extend to extend in axial projection relative to the rear face of the bottom. Fixing the tube 10 with the bottom 11 is then achieved by welding the inside of the tube 10 with an oblique shot between in this case the outer periphery of the rear face of the bottom 10 and the adjacent inner periphery of the end 10b of the tube 10.

Avantageusement dans tous les cas les cordons de soudure 12 sont continus pour une bonne étanchéité du fond, une bonne continuité du circuit magnétique et une bonne solidarisation entre les pièces 11,10.Advantageously, in all cases the weld seams 12 are continuous for good bottom sealing, good continuity of the magnetic circuit and good bonding between the parts 11, 10.

Claims (10)

  1. Contactor for a motor vehicle starter, of the type comprising a frame (1) made of a material providing a magnetic flux path and composed of a base with a hole for inserting a movable core (3), a shoulder (14) to hold a stationary core (2) and an axially oriented cylindrical portion, or so-called crimping portion (13), extending axially away from the base and beyond the shoulder for mounting a cover (6) by crimping, characterised in that the frame (1) is made of two parts: a first transversally oriented part (11), or so-called base, forming the base (11) with a hole and an axially orientated tube (13) presenting the crimping portion (13) and the shoulder (14) and in that the tube (10) is attached to the base (12).
  2. Contactor according to claim 1, characterised in that the outer tube (10) covers at least part of the outer periphery of the base (11).
  3. Contactor according to claim 1, characterised in that the tube (10) is attached by its end segment (10b) opposite the crimping portion (13) to the outer periphery of the adjacent face of the base (11).
  4. Contactor according to any of the foregoing claims, characterised in that the base (11) and the tube (10) are attached to each other by the indirect supply of heat.
  5. Contactor according to claim 4, characterised in that the base (11) and the outer tube (10) are attached to each other by laser or electron beam welding.
  6. Contactor according to any of the foregoing claims, characterised in that the base (11) and the outer tube (10) are attached to each other inside the tube (10).
  7. Contactor according to the foregoing claim, characterised in that the attachment is made by laser or electron beam welding with an oblique shot directed at the outer periphery of the base (11).
  8. Contactor according to any of the foregoing claims, characterised in that the tube (10) has an anticorrosion and aesthetic surface treatment.
  9. Contactor according to any of the foregoing claims, characterised in that the thickness of the base (11) is greater than that of the tube (10).
  10. Motor vehicle starter, characterised in that it incorporates a contactor according to any of the foregoing claims.
EP01978507A 2000-09-25 2001-09-21 Coil frame ignition switch for motor vehicle and starter provided with same Expired - Lifetime EP1230661B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0012144 2000-09-25
FR0012144A FR2814590B1 (en) 2000-09-25 2000-09-25 CARCASS CONTACTOR FOR A MOTOR VEHICLE STARTER AND STARTER PROVIDED WITH SUCH A CONTACTOR
PCT/FR2001/002938 WO2002025679A1 (en) 2000-09-25 2001-09-21 Coil frame ignition switch for motor vehicle and starter provided with same

Publications (2)

Publication Number Publication Date
EP1230661A1 EP1230661A1 (en) 2002-08-14
EP1230661B1 true EP1230661B1 (en) 2007-04-04

Family

ID=8854619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01978507A Expired - Lifetime EP1230661B1 (en) 2000-09-25 2001-09-21 Coil frame ignition switch for motor vehicle and starter provided with same

Country Status (7)

Country Link
EP (1) EP1230661B1 (en)
KR (1) KR100796356B1 (en)
BR (1) BRPI0107167B1 (en)
DE (1) DE60127650T2 (en)
ES (1) ES2284701T3 (en)
FR (1) FR2814590B1 (en)
WO (1) WO2002025679A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2318672A (en) * 1941-11-26 1943-05-11 Gen Motors Corp Solenoid switch
FR2739899B1 (en) * 1995-10-12 1997-11-21 Valeo Equip Electr Moteur STARTER CONTACTOR HAVING IMPROVED FIXED CONTACTS AND MOTOR VEHICLE STARTER EQUIPPED WITH SUCH A CONTACTOR

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
BRPI0107167B1 (en) 2016-02-10
BR0107167A (en) 2002-06-18
WO2002025679A1 (en) 2002-03-28
ES2284701T3 (en) 2007-11-16
KR20020065527A (en) 2002-08-13
KR100796356B1 (en) 2008-01-21
FR2814590B1 (en) 2002-10-18
EP1230661A1 (en) 2002-08-14
FR2814590A1 (en) 2002-03-29
DE60127650T2 (en) 2007-12-20
DE60127650D1 (en) 2007-05-16

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