EP1961030A2 - Moving element for an electromagnetic contactor, and contactor comprising such an element - Google Patents

Moving element for an electromagnetic contactor, and contactor comprising such an element

Info

Publication number
EP1961030A2
EP1961030A2 EP06842142A EP06842142A EP1961030A2 EP 1961030 A2 EP1961030 A2 EP 1961030A2 EP 06842142 A EP06842142 A EP 06842142A EP 06842142 A EP06842142 A EP 06842142A EP 1961030 A2 EP1961030 A2 EP 1961030A2
Authority
EP
European Patent Office
Prior art keywords
section
movable contact
control rod
contact
faces
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
EP06842142A
Other languages
German (de)
French (fr)
Other versions
EP1961030B1 (en
Inventor
Stéphane PLAIDEAU
Jean-Sébastien Metral
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
Priority to PL06842142T priority Critical patent/PL1961030T3/en
Publication of EP1961030A2 publication Critical patent/EP1961030A2/en
Application granted granted Critical
Publication of EP1961030B1 publication Critical patent/EP1961030B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2008—Facilitate mounting or replacing contact bridge and pressure spring on carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts

Definitions

  • the present invention relates to the method of mounting a movable contact on a control rod, which comprises an electromagnetic contactor for a power circuit, in particular for an electric motor of an internal combustion engine starter, in particular of a motor vehicle .
  • the present invention also relates to an electromagnetic contactor, in particular for an electric motor of an internal combustion engine starter, comprising such an assembly.
  • an electromagnetic contactor for a power circuit comprises a moving element comprising a movable contact mounted on a control rod.
  • the movable contact is intended to come into contact with fixed electrical contact terminals, arranged in a contact chamber at the front of the contactor.
  • This contactor is for example used to control the actuation of an electric motor of an internal combustion engine starter.
  • FIG. 1 which is a partial view in axial section, illustrates such a contactor 10 of the state of the art for an electric motor of an internal combustion engine starter, provided with a mobile core 16, a fixed core 24, both of ferromagnetic material, and a metal housing 12, also called tank, wherein is arranged at least one coil 14 mounted on an insulating annular support (not referenced). The support is engaged on an annular bearing (not referenced) of the fixed core 24. This support and the rear end of the tank 12 are centrally provided with a passage for the movable core 16.
  • This coil 14, when activated electrically following for example to actuation of the ignition key, controls the axial displacement of the movable core 16 towards the fixed core 24.
  • One end of the movable core 16 is connected to a pivoting lever (not shown) which acts for example on the launcher of the starter as described in the document FR A 2 795 884 and it is for this reason that we see partially in 50 in Figure 1 the spring teeth against teeth and 51 the connecting rod to the pivoting lever.
  • the other front end 18 of the movable core 16 is intended to act on a control rod 20 by pushing through a central hole 22 of the fixed core 24 in which the rear portion 26 of the rod 20 is slidably mounted.
  • the rod 51 and the spring 50 are mounted inside a cavity closed by the front end 18, in the form of a washer, of the movable core 16, which controls the axial displacements of the control rod 20, electrically
  • This rod is thus pushed by its rear end 26 and carries at its opposite end before 28 a movable contact 30, slidably mounted on the control rod 20.
  • the movable contact 30 is substantially plate-shaped electrically conductive material. This contact 30 extends transversely to cooperate with two heads 32 and 34 of electrical terminals 36 and 38 of an electrical power circuit and establish between them an electrical contact by its front face 29.
  • the two terminals 36 and 38 are fixed and are carried by a front cover 40 of electrically insulating material, which is fixed by crimping in a front portion of the housing 12.
  • the cover 40 defines a contact chamber for the heads 32, 34 and for the movable contact 30.
  • This cover 24 serves also to the fixing of the fixed core 24, axially wedged between a shoulder of the cover 20 and the fixed core 24 having axial projections engaging in notches of the fixed core 24 for locking in rotation and angular indexing of the cover 40.
  • One of the terminals 36, 38 is intended to be connected to the positive terminal of the battery, while the other terminal is intended to be connected to the electric motor of the starter as described for example in the document FR A 2 79 5,884 above.
  • the rod 20 carries an axial retaining spring 42 arranged between a rear axial shoulder 44 of the rod 20 and a rear face 31 of the movable contact 30.
  • the spring 42 is provided to maintain the movable contact 30 bearing forwards on front axial stop means 46 when the movable contact 30 is not in contact with the heads 32, 32.
  • These means 46 are constituted by a thrust washer immobilized axially by a claw washer, which is elastic and consists of a Belleville washer having at its inner periphery legs adapted to anchor in the front part of the rod 20.
  • the contactor 10 comprises a return spring 48 arranged between the front cover 40 and the control rod 20 to recall the latter, and therefore the movable contact 30, back.
  • This spring 48 is supported on the claw washer and on the cover 40.
  • the return spring 48 also called the cutoff spring, has a lower stiffness of the holding spring 42, also called contact pressure spring, which makes it possible to a last phase to the movable core 16 to come into contact with the fixed core 24 and the rod 20 to move after coming into contact with the movable contact 30 with the heads 32, 34. In this last phase the spring 42 is compressed and the movable contact 30 occupies finally a retracted active position.
  • the coil 14 when energized, the coil 14 creates a magnetic field, which allows the axially forward drive of the movable core 16, which then moves the control rod 20 and the movable contact 30, the latter being brought in contact with the heads 32, 34 to make an electrical contact between the terminals 36,38 and electrically power the electric motor of the starter.
  • the movable contact 30 is thus slidably mounted on the rod 20 between an advanced rest position and an active retracted position.
  • the spring 42 axially urges the movable contact 30 towards its rest position in which it is in contact with the abutment means 46 beforehand. In its active position, the movable contact is in contact with the heads 32, 34 and the spring 42 is compressed. so that a clearance exists between the contact 30 and the stop means 46 ( Figure 1).
  • the arrangement of the contact 30 on the rod 20 is quite complex and comprises a number of parts that must be assembled.
  • This arrangement comprises in FIG. 1 six pieces, namely the control rod 20 with a rear axial shoulder 44, the holding spring 42, the movable contact 30, the stop abutment means 46 comprising the thrust washer and the claw washer and finally the return spring 48.
  • the means for fixing the abutment means 46 on the rod 20 have the disadvantage of creating particles of insulating material that result from the force fitting of the claw fastener washer. These insulating particles may affect the contact between the heads 32, 34 and the movable contact if they are placed between these elements.
  • No. 2,741,996 consists in making grooves in the control rod and in radially crimping the movable contact to form pins which are slidably received in the grooves delimited at the front by an abutment surface for the moving contact. Such a solution is satisfactory because it reduces the number of parts, however, when crimping cracks may appear.
  • the present invention proposes to create a bayonet type assembly to mount the movable contact on the control rod.
  • a mobile electromagnetic contactor power unit of the type comprising a movable contact carried by a control rod
  • bayonet type assembly means intervene between the movable contact and the control rod for mounting the movable contact on the control rod and in that these assembly means of the bayonet type are configured to achieve a locking rotation of the movable contact on its control rod.
  • an electromagnetic contactor in particular for an electric motor of an internal combustion engine starter, of the above-mentioned type comprising a moving element is characterized in that it comprises a moving element according to the invention.
  • the movable contact through its hole or central orifice, forming a passage, is placed on the control rod and is rotated to come into contact with its front face with at least one stop integral with the rod. ordered.
  • the invention compared to the solution of Figure 1 is removed two pieces namely the thrust washer and the claw washer so that the solution is simple, economical and reduces the number of parts to be stored.
  • the assembly is faster and without risk, on the one hand, pollution of the contact chamber by particles torn off the control rod during assembly of the claw washer due to the removal of this washer claws and on the other hand, forgetting the mounting of the thrust washer and / or the claw washer.
  • the reliability of the contactor is also improved by eliminating the resilient spring washer subjected to fatigue during operation of the contactor.
  • the lifespan of the moving equipment is thus increased, while reducing the number of parts.
  • the reliability of the contactor is also improved because of the absence of crimping at the mobile contact, which in certain cases reveals failure primers and / or cracks. .
  • the solution according to the invention makes it possible to increase the life of the contactor. It is therefore possible to stop and restart the internal combustion engine a greater number of times. Thus in the case of an application to a motor vehicle can stop the internal combustion engine at a red light and restart it to reduce fuel consumption.
  • the mounting of the movable contact on its control rod is performed without special precautions, is robust and takes advantage of the holding spring which urges the movable contact towards at least one rigid abutment integral with the control rod.
  • the stop is in one piece with the control rod.
  • FIG. 2 is a perspective view of the movable assembly of the invention equipped with the return spring or breaking spring;
  • FIG. 3 is an exploded perspective view of FIG. 2;
  • FIG 4 is a perspective view of the movable contact
  • FIG. 5 is a front view of the movable contact
  • FIG 6 is a perspective view of the control rod
  • FIGS. 7 and 8 are views of the second section of the control rod respectively along the lines 7-7 and 8-8 of Figure 6 to show the sections of the front and rear portions of the second section;
  • FIG. 9 to 12 illustrate the different phases of bayonet mounting of the movable contact on its associated control rod.
  • FIG. 2 the moving assembly according to the invention is shown at 100 and the return spring associated with this crew at 48, this assembly 100-48 being mounted in place of that of FIG. 1.
  • the springs 48 and 42 are helicoidal springs of cylindrical shape as in FIG. 1.
  • the external diameter of the spring 42 is here greater than the external diameter of the spring 48.
  • the spring 42 is stiffer than the spring 48.
  • the control rod 20, the retaining spring 42 and the movable contact 30, carried by the rod 20, belong to the mobile assembly 100.
  • control rod 20 and the central hole or orifice 246 of the movable contact 30 are modified in the manner described below in the form of a generally rectangular plate as in FIG. 1.
  • the rod 20 is made of electrically insulating material, while the movable contact 30, carried by the rod 20, is of electrically conductive material.
  • the mobile contact 30 is in this metallic embodiment, for example copper, and is adapted to cooperate by its front face 29 with the heads 32 and 36 of the terminals 36 and 38 of Figure 1 and its rear face 31 with the front end of the fixed core of the electromagnetic contactor of Figure 1.
  • the retaining spring 42 is supported on the rear shoulder 44 of the rod 20 and on the rear face 31 of the movable contact 30 of transverse orientation relative to the axial axis of symmetry XX ( Figure 6) that has the rod 20.
  • This contact 30 is obtained here by cutting with the press.
  • the rod 20 is here made of insulating plastic optionally reinforced with fibers. It is for example PA 6-6 and is obtained by molding to obtain the desired shapes. Alternatively the rod 20 is ceramic and is obtained for example by sintering.
  • the rod 20 has a rear end 26, a front end 28 and, between these ends 26, 28, a rear guide portion 133, 134, the rear shoulder 44, a central portion 129, 130, 131 and a front portion 128 for mounting the return spring 48.
  • the chamfer 26 (FIG. 6) is connected at the front to a section 134 of cylindrical shape extended itself forward by a section 133 of cylindrical shape with a diameter slightly greater than that of the section 134.
  • a section 134 of cylindrical shape extended itself forward by a section 133 of cylindrical shape with a diameter slightly greater than that of the section 134.
  • the sections 134, 133 constitute the rear guide portion of the rod, which in a variant comprises only the section 133.
  • the shoulder 44 is delimited by a front face 144 and a rear face 132.
  • section 133 is connected at the front to the rear shoulder 44 of the rod 20, more precisely to the rear face
  • This rear face 132 is flared here being of frustoconical shape, adapted to the shape of the central passage of the fixed core of Figure 1.
  • This shoulder. 44 extends radially projecting relative to the rear portion 133, 134 and is, through its front face 144, transverse orientation relative to the central axis XX of the rod, a rear stop for the holding spring 42.
  • the shoulder 44 is in the form of an annular collar whose outer diameter is greater than that of the rear portion 133, 134 and a fourth cylindrical section 142 for mounting the rear end of the holding spring 42 threaded on this section 142 belonging to the central part of the rod 20.
  • the section 142 is delimited by the front face 144.
  • the front end 28 is here of frustoconical shape, alternatively rounded or ogival-shaped, to facilitate the mounting of the return spring 48. This end is connected to a first section
  • the central part of the rod 20 extends between the front face of the shoulder 44 and the first section 128 for mounting the spring 48.
  • This central portion comprises, from left to right in the direction from left to right in FIG. 6, a second section 129, a third section 130, a connecting chamfer 131 and a fourth section, namely the mounting section 142 of FIG. holding spring 42.
  • the movable contact 30 is mounted on its control rod 20 by means of assembly means bayonet type.
  • the axial length of the mounting section 142 of the holding spring 42 is reduced, as is the axial length of the first section 128 for mounting the return spring 48 to maintain the axial length of the rod 20.
  • the reduction in the axial length of the first section 128 is made possible by the suppression of the claw washer and the thrust washer of FIG. 1. This first section 128 is therefore arranged with respect to that of FIG. less mechanically stressed.
  • the third section 130 is cylindrical in shape and has a smaller external diameter than the fourth section 142, the chamfer 131 being a connecting chamfer between the sections 130 and 142.
  • the fourth section 142 and the third section 130 have an outer diameter greater than that of the sections 133, 134. Of course this depends on the applications.
  • the first section 128 and the third section 130 have in this embodiment the same external diameter.
  • the third section 130 is a so-called section section of rotation allowing a rotation of the movable contact 30, while the second section 129 and a so-called said section of passage and blocking of the movable contact 30.
  • This second section 129 also allows the passage of the spring 42.
  • the second section 129 has a rear portion 124, 123 ( Figure 7) of square section with rounded corners. This rear portion has a diameter D at these corners and a width D1 between these corners.
  • the second section 129 has a front portion 127, 123
  • the diameter D is equal, close to the mounting clearance, to that of the internal diameter of that of the spring 42 and that of the fourth section 142.
  • the spring 42 is mounted simply by axial threading back and forth on the rod 20 until 'at its abutment against the front face 144 of the rear shoulder 44, which has the largest outer diameter of the rod 20.
  • the opening or central orifice 246 of the movable contact 30 has a shape complementary to that of the front portion 123, 127 of the second section 129.
  • This opening 246 (FIG. 5) is therefore delimited by two parallel flats separated from each other. other by a distance D '1 equal to the mounting clearance close to the width D 1 of the square of the rear portion of the section 129.
  • These two flats are connected to each other by two diametrically opposed cylindrical portions of diameter D' equal to the mounting clearance near that D on which are located the rounded corners of the front portion of section 129.
  • the second section 129 has two first parallel faces 123 separated from each other by the distance Dl. These first two faces extend between the two cylindrical sections 128 and 130 of external diameter equal to this distance D l. These first two faces 123 thus extend continuously axially along the second section 129 and constitute the two flats of the front portion 123, 127 and two of the sides of the rear portion 123, 124 of the second section 129.
  • This second section 129 also has two second parallel faces 124 separated from each other by the distance D 1. These second faces 124 are perpendicular to the first faces 123 and constitute the other two sides of the rear portion 123, 124 of the second section.
  • the two faces 124 extend forwardly from the third section 130 of external diameter D 1 inscribed in the square with rounded corners of diameter D as best seen in FIG.
  • the second faces 124 extend axially each up to the rear face 125 of an abutment 127.
  • Each abutment 127, protruding radially and forming a relief, is in the form of a cylindrical portion of external diameter D equal to the set of tolerances by , that of the fourth section 142 and that of the complementary cylindrical portions of the orifice 246 of the movable contact 30.
  • the stops 127 constitute the cylindrical portions of the front portion 123, 127 of the second section. These stops are rigid.
  • each protruding stop 127 serves as a stop on the rear face of the spring 48 supported by its front face on the bottom of the cover 40 of FIG. 1.
  • the two rigid stops 127 replace the front abutment means 46 of FIG. 1 and are therefore rigid front stops here.
  • the second section is a passage section allowing, by its first faces 123 and its cylindrical portions 127, the axial passage of the opening 246 of the movable contact 30.
  • This contact 30 is thus axially threaded on the second section
  • the parallel faces of the movable contact 30, constituted by the two flats of the opening 246 of the movable contact, are axially threaded with mounting clearance on the first faces 123 of the section 129 and the spring 42 is compressed axially, this spring bearing on the front face 144 of the shoulder 44 and on the rear face 31 of the movable contact acting as a pressure plate and the shoulder 44 of the reaction plate.
  • This second section 129 belonging to the bayonet type assembly means, is therefore configured to allow axial threading of the movable contact on this second section 129.
  • the third cylindrical section 130 is used to rotate the movable contact 30 by 90 ° against the force exerted by the spring.
  • the opening 246 of the movable contact 30 is rotated and the flats of this opening 246 are brought into parallelism with the second faces 124.
  • the axial length of the third section 130 is at least equal to the thickness of the moving contact. 30 at its orifice 246. This length is preferably greater than the thickness of the movable contact.
  • the third section is therefore a section of rotation for the movable contact 30.
  • This third section 130 belonging to the bayonet type assembly means, is therefore configured to allow rotation of the movable contact on the third 130 extending rearward the second section 129.
  • a third step the axial force exerted previously on the front face 29 of the movable contact 30 is released using a non-visible pressing tool, so that the front face 29 of the movable contact, under the bias of the spring 42 , comes into axial abutment on the two rear faces 125 of the two front stops 127 as visible in FIG. 12.
  • the assembly means of the bayonet type are configured, according to a feature of the invention, to achieve a locking in rotation of the movable contact relative to the control rod.
  • the axial length of the second faces 124 of the second section 129 is at least equal to the thickness of the moving contact.
  • This length is preferably greater than that of the thickness of the moving contact and depends on the applications in order to allow the required axial movement of the movable contact with respect to the rod 20 so that this contact occupies its position. active backward position.
  • This second section 129 is a multifunction section, which therefore constitutes for the movable contact 30 a passage section, axial grooving in one direction and rotational locking of this contact mounted on its rod 20 by a bayonet type mounting, means bayonet type assembly intervening between the movable contact 30 and the control rod 20 for mounting the movable contact on its rod.
  • the invention takes advantage of the presence of the spring 42 which permanently solicits the movable contact 30 in the direction of the stops 127. This position of contact without play corresponds to the advanced position of rest of the movable contact, which moves axially on its rod. to reach an active retracted position when the movable contact is in contact with the heads 32, 34 of Figure 1.
  • This assembly is stable thanks to the presence of two stops 127 and two faces 124 which provide a large surface or contact area to the moving contact.
  • This assembly can be robotic and uses a simple tooling without deformation of the moving contact unlike a crimp assembly requiring greater efforts.
  • the second section 129 is easily obtained.
  • this section is obtained by milling the faces 123, 124 from a cylindrical section.
  • the opening 246 of the contact 30 and the complementary front portion of the second section 129 have another shape, for example a square or rectangular shape.
  • the radially projecting stops 127 have alternatively a shape complementary to that of the orifice 246, for example square or rectangular.
  • a single stop 127 a single flat and only two faces 123, 124 are provided.
  • stop or stops 127 are in one piece with the rod.
  • stop or stops 127 are attached to fixation on the rod. In all cases the stop or stops 127 are rigid and integral with the rod.
  • the bayonet-type mounting may involve at least two radially projecting lugs inside the opening 246 of the contact 30.
  • These lugs for example in the form of lugs, are each engaged in a complementary groove provided in the fourth section 142 extended axially forward so that the presence of sections 129, 130 is not mandatory.
  • the lugs are in a diametrically opposed embodiment.
  • each groove has a first axial section, opening in front of the side of the first section 128 and extended at its rear end by a circumferential section in the same manner as the opening of a lighting lamp socket.
  • This circumferential section is in an embodiment extended at its circumferential end by a second axial section shorter than the first section for locking in rotation of the movable contact on the rod.
  • the width of the grooves depends on that of the lugs.
  • the invention is not limited to the embodiments described above, and it also applies to different forms of electromagnetic contactors power.
  • the invention applies to all types of contactors for electric motors of conventional internal combustion engine starters.
  • the contactor can be installed above the electric motor of the starter as in the document FR A 2 795 884.
  • the contactor is offset, for example being implanted transversely to the rear of the electric motor of the starter as in document FR A 2,843,427.
  • the spring teeth against teeth also called engagement spring, is implanted either in the switch as in Figure 1, or outside the contactor between the launcher and the actuating lever as in Figure 1 of EP B 0,960,276.
  • the contactor may comprise a holding coil and a call coil.
  • the contactor comprises a coil as described in document FR A 2 795 884.
  • a specific electric motor is provided to operate the lever so that the movable core is simplified without being connected to the lever.
  • the presence of the operating lever is not mandatory, the electric motor of the starter in an embodiment running at a slow speed via a bypass winding.
  • the launcher is either freewheel or multiple disk clutch.
  • the starter is a starter with speed reducer or without gearbox.
  • the launcher comprises a pinion which meshes with a toothed starter ring as described in document FR A 2 795 884.
  • a belt transmission and pulley or chain and sprockets intervenes between the starter and the crankshaft of the internal combustion engine, the freewheel being for example implanted in the pulley or the toothed wheel associated with the crankshaft of the internal combustion engine, which may be stationary or belong to a motor vehicle, such as a passenger vehicle or a boat.
  • the electromagnetic contactor for a power circuit according to the invention may belong to a battery coupler for example in such a way that two 12V batteries previously connected in parallel is put in series for starting and that a voltage of 24V exists at the terminals of the starter.
  • the contactor according to the invention may belong to a coupling relay of two starters acting in parallel.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Valve Device For Special Equipments (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Electromagnets (AREA)

Abstract

The invention relates to a moving element for an electromagnetic power contactor comprising a moving contact (30) supported by a drive rod (20) and bayonet-type assembly means used between the moving contact (30) and the drive rod (20) in order to mount the moving contact on the drive rod, these means being configured so as to prevent the moving contact from rotating relative to the drive rod. The invention also proposes a contactor comprising such a moving element. Application: electromagnetic contactor for an electric motor of an internal combustion engine starter.

Description

"Equipage mobile pour contacteur électromagnétique et contacteur comportant un tel équipage" "Mobile crew for electromagnetic contactor and contactor with such a crew"
Domaine de l'inventionField of the invention
La présente invention concerne le mode de montage d'un contact mobile sur une tige de commande, que comporte un contacteur électromagnétique pour un circuit de puissance, notamment pour un moteur électrique d'un démarreur de moteur à combustion interne, en particulier de véhicule automobile.The present invention relates to the method of mounting a movable contact on a control rod, which comprises an electromagnetic contactor for a power circuit, in particular for an electric motor of an internal combustion engine starter, in particular of a motor vehicle .
La présente invention a également pour objet un contacteur électromagnétique, notamment pour un moteur électrique d'un démarreur de moteur à combustion interne, comportant un tel montage.The present invention also relates to an electromagnetic contactor, in particular for an electric motor of an internal combustion engine starter, comprising such an assembly.
Etat de la techniqueState of the art
Selon une conception connue un contacteur électromagnétique pour un circuit de puissance comporte un équipage mobile comprenant un contact mobile monté sur une tige de commande.According to a known design an electromagnetic contactor for a power circuit comprises a moving element comprising a movable contact mounted on a control rod.
Le contact mobile est destiné à venir en contact avec des bornes électriques de contact fixes, agencées dans une chambre de contact à l'avant du contacteur. Ce contacteur est par exemple utilisé pour commander l'actionnement d'un moteur électrique d'un démarreur de moteur à combustion interne.The movable contact is intended to come into contact with fixed electrical contact terminals, arranged in a contact chamber at the front of the contactor. This contactor is for example used to control the actuation of an electric motor of an internal combustion engine starter.
La figure 1, qui est une vue partielle en coupe axiale, illustre un tel contacteur 10 de l' état de la technique pour un moteur électrique d'un démarreur de moteur à combustion interne, doté d'un noyau mobile 16, d'un noyau fixe 24, tous deux en matériau ferromagnétique, et d'un carter métallique 12, appelé également cuve, dans lequel est agencée au moins une bobine 14 montée sur un support annulaire isolant (non référencé). Le support est engagé sur une portée annulaire (non référencée) du noyau fixe 24. Ce support et l' extrémité arrière de la cuve 12 sont dotés centralement d'un passage pour le noyau mobile 16. Cette bobine 14, lorsqu'elle est activée électriquement suite par exemple à l' actionnement de la clé de contact, commande le déplacement axial du noyau mobile 16 en direction du noyau fixe 24.FIG. 1, which is a partial view in axial section, illustrates such a contactor 10 of the state of the art for an electric motor of an internal combustion engine starter, provided with a mobile core 16, a fixed core 24, both of ferromagnetic material, and a metal housing 12, also called tank, wherein is arranged at least one coil 14 mounted on an insulating annular support (not referenced). The support is engaged on an annular bearing (not referenced) of the fixed core 24. This support and the rear end of the tank 12 are centrally provided with a passage for the movable core 16. This coil 14, when activated electrically following for example to actuation of the ignition key, controls the axial displacement of the movable core 16 towards the fixed core 24.
Une extrémité du noyau mobile 16 est reliée à un levier pivotant (non représenté) qui agit par exemple sur le lanceur du démarreur comme décrit dans le document FR A 2 795 884 et c'est pour cette raison que l' on voit partiellement en 50 dans la figure 1 le ressort dents contre dents et en 51 la tige de liaison au levier pivotant. L'autre extrémité avant 18 du noyau mobile 16 est destinée à agir sur une tige de commande 20 par poussée à travers un trou 22 central du noyau fixe 24 dans lequel la partie arrière 26 de la tige 20 est montée coulissante.One end of the movable core 16 is connected to a pivoting lever (not shown) which acts for example on the launcher of the starter as described in the document FR A 2 795 884 and it is for this reason that we see partially in 50 in Figure 1 the spring teeth against teeth and 51 the connecting rod to the pivoting lever. The other front end 18 of the movable core 16 is intended to act on a control rod 20 by pushing through a central hole 22 of the fixed core 24 in which the rear portion 26 of the rod 20 is slidably mounted.
La tige 51 et le ressort 50 sont montés à l'intérieur d'une cavité fermée par l'extrémité avant 18, en forme de rondelle, du noyau mobile 16, qui commande les déplacements axiaux de la tige de commande 20, en matière électriquement isolante Cette tige est donc poussée par son extrémité arrière 26 et elle porte à son extrémité opposée avant 28 un contact mobile 30, monté coulissant sur la tige de commande 20. Le contact mobile 30 est sensiblement en forme de plaque en matériau électriquement conducteur. Ce contact 30 s'étend transversalement pour coopérer avec deux têtes 32 et 34 de bornes électriques 36 et 38 d'un circuit électrique de puissance et établir entre elles un contact électrique par sa face avant 29. Les deux bornes 36 et 38 sont fixes et sont portées par un capot avant 40 en matériau électriquement isolant, qui est fixé par sertissage dans une partie avant du carter 12. Le capot 40 délimite une chambre de contact pour les têtes 32, 34 et pour le contact mobile 30. Ce capot 24 sert également à la fixation du noyau fixe 24, calé axialement entre un épaulement du capot 20 et le noyau fixe 24 doté de saillies axiales s'engageant dans des échancrures du noyau fixe 24 pour blocage en rotation et indexation angulaire du capot 40. Une des bornes 36, 38 est destinée à être reliée à la borne positive de la batterie, tandis que l'autre borne est destinée à être reliée au moteur électrique du démarreur comme décrit par exemple dans le document FR A 2 795 884 précité.The rod 51 and the spring 50 are mounted inside a cavity closed by the front end 18, in the form of a washer, of the movable core 16, which controls the axial displacements of the control rod 20, electrically This rod is thus pushed by its rear end 26 and carries at its opposite end before 28 a movable contact 30, slidably mounted on the control rod 20. The movable contact 30 is substantially plate-shaped electrically conductive material. This contact 30 extends transversely to cooperate with two heads 32 and 34 of electrical terminals 36 and 38 of an electrical power circuit and establish between them an electrical contact by its front face 29. The two terminals 36 and 38 are fixed and are carried by a front cover 40 of electrically insulating material, which is fixed by crimping in a front portion of the housing 12. The cover 40 defines a contact chamber for the heads 32, 34 and for the movable contact 30. This cover 24 serves also to the fixing of the fixed core 24, axially wedged between a shoulder of the cover 20 and the fixed core 24 having axial projections engaging in notches of the fixed core 24 for locking in rotation and angular indexing of the cover 40. One of the terminals 36, 38 is intended to be connected to the positive terminal of the battery, while the other terminal is intended to be connected to the electric motor of the starter as described for example in the document FR A 2 79 5,884 above.
La tige 20 porte un ressort axial de maintien 42 agencé entre un épaulement axial arrière 44 de la tige 20 et une face arrière 31 du contact mobile 30. Le ressort 42 est prévu pour maintenir le contact mobile 30 en appui vers l'avant sur des moyens de butée axiale avant 46 lorsque le contact mobile 30 n'est pas en contact avec les têtes 32, 32. Ces moyens 46 sont constitués par une rondelle de butée immobilisée axialement par une rondelle à griffes, qui est élastique et consiste en une rondelle Belleville présentant à sa périphérie interne des pattes adaptées à s'ancrer dans la partie avant de la tige 20.The rod 20 carries an axial retaining spring 42 arranged between a rear axial shoulder 44 of the rod 20 and a rear face 31 of the movable contact 30. The spring 42 is provided to maintain the movable contact 30 bearing forwards on front axial stop means 46 when the movable contact 30 is not in contact with the heads 32, 32. These means 46 are constituted by a thrust washer immobilized axially by a claw washer, which is elastic and consists of a Belleville washer having at its inner periphery legs adapted to anchor in the front part of the rod 20.
Enfin le contacteur 10 comporte un ressort de rappel 48 agencé entre le capot avant 40 et la tige de commande 20 pour rappeler cette dernière, et par conséquent le contact mobile 30, en arrière. Ce ressort 48 prend appui sur la rondelle à griffes et sur le capot 40. Le ressort de rappel 48, appelé également ressort de coupure, a une raideur inférieure au ressort de maintien 42, appelé également ressort de pression de contact, permettant lors d'une dernière phase au noyau mobile 16 de venir au contact du noyau fixe 24 et à la tige 20 de se déplacer après venue en contact du contact mobile 30 avec les têtes 32, 34. Lors de cette dernière phase le ressort 42 est comprimé et le contact mobile 30 occupe en final une position active reculée.Finally the contactor 10 comprises a return spring 48 arranged between the front cover 40 and the control rod 20 to recall the latter, and therefore the movable contact 30, back. This spring 48 is supported on the claw washer and on the cover 40. The return spring 48, also called the cutoff spring, has a lower stiffness of the holding spring 42, also called contact pressure spring, which makes it possible to a last phase to the movable core 16 to come into contact with the fixed core 24 and the rod 20 to move after coming into contact with the movable contact 30 with the heads 32, 34. In this last phase the spring 42 is compressed and the movable contact 30 occupies finally a retracted active position.
Ainsi, lors de la mise sous tension, la bobine 14 crée un champs magnétique, qui permet l'entraînement axialement vers l'avant du noyau mobile 16, qui déplace alors la tige de commande 20 et le contact mobile 30, ce dernier étant amené au contact des têtes 32, 34 pour opérer un contact électrique entre les bornes 36,38 et alimenter électriquement le moteur électrique du démarreur.Thus, when energized, the coil 14 creates a magnetic field, which allows the axially forward drive of the movable core 16, which then moves the control rod 20 and the movable contact 30, the latter being brought in contact with the heads 32, 34 to make an electrical contact between the terminals 36,38 and electrically power the electric motor of the starter.
Lors de la mise hors tension de la bobine 14, le noyau mobile 16 n'est plus entraîné vers l'avant et le ressort de rappel 48 repousse la tige de commande 20 vers l'arrière jusqu'à ce que le contact mobile 30 soit en butée sur le noyau fixe 24.When the coil 14 is de-energized, the movable core 16 is no longer driven forward and the return spring 48 pushes the control rod 20 backwards until the movable contact 30 is abutting on the fixed core 24.
Le contact mobile 30 est donc monté coulissant sur la tige 20 entre une position avancée de repos et une position reculée active. Le ressort 42 sollicite axialement le contact mobile 30 vers sa position de repos dans laquelle il est en contact avec les moyens de butée avant 46. Dans sa position active le contact mobile est en contact avec les têtes 32, 34 et le ressort 42 est comprimé en sorte qu'un jeu existe entre le contact 30 et les moyens de butée 46 (figure 1).The movable contact 30 is thus slidably mounted on the rod 20 between an advanced rest position and an active retracted position. The spring 42 axially urges the movable contact 30 towards its rest position in which it is in contact with the abutment means 46 beforehand. In its active position, the movable contact is in contact with the heads 32, 34 and the spring 42 is compressed. so that a clearance exists between the contact 30 and the stop means 46 (Figure 1).
L'agencement du contact 30 sur la tige 20 est assez complexe et comporte un certain nombre de pièces qu'il faut assembler. Cet agencement comporte dans la figure 1 six pièces à savoir la tige de commande 20 à épaulement axial arrière 44, le ressort de maintien 42, le contact mobile 30, les moyens de buté butée 46 comportant la rondelle de butée et la rondelle à griffes et enfin le ressort de rappel 48.The arrangement of the contact 30 on the rod 20 is quite complex and comprises a number of parts that must be assembled. This arrangement comprises in FIG. 1 six pieces, namely the control rod 20 with a rear axial shoulder 44, the holding spring 42, the movable contact 30, the stop abutment means 46 comprising the thrust washer and the claw washer and finally the return spring 48.
Ces opérations d'assemblage ne sont pas aussi pratique que souhaité et demandent une certaine minutie. De plus, les moyens de fixation des moyens de butée 46 sur la tige 20 ont pour inconvénient de créer des particules de matière isolante qui résultent du montage à force de la rondelle de fixation à griffes. Ces particules isolantes risquent de nuire au contact entre les têtes 32, 34 et le contact mobile si elles se placent entre ces éléments. Une autre solution décrite par exemple dans le document FR AThese assembly operations are not as convenient as desired and require some attention to detail. In addition, the means for fixing the abutment means 46 on the rod 20 have the disadvantage of creating particles of insulating material that result from the force fitting of the claw fastener washer. These insulating particles may affect the contact between the heads 32, 34 and the movable contact if they are placed between these elements. Another solution described for example in document FR A
2 741 996 consiste à réaliser des rainures dans la tige de commande et à déformer radialement par sertissage le contact mobile pour former des ergots, qui sont reçus en coulissement dans les rainures délimitées à l' avant par une surface de butée pour le contact mobile. Une telle solution donne satisfaction car elle permet de réduire le nombre de pièces néanmoins lors du sertissage des fissures peuvent apparaître.No. 2,741,996 consists in making grooves in the control rod and in radially crimping the movable contact to form pins which are slidably received in the grooves delimited at the front by an abutment surface for the moving contact. Such a solution is satisfactory because it reduces the number of parts, however, when crimping cracks may appear.
Objet de l'inventionObject of the invention
Pour remédier à ces inconvénients, tout en ayant un nombre de pièces réduit, la présente invention propose de créer un assemblage du type baïonnette pour monter le contact mobile sur la tige de commande.To overcome these disadvantages, while having a reduced number of parts, the present invention proposes to create a bayonet type assembly to mount the movable contact on the control rod.
Suivant l' invention un équipage mobile pour contacteur électromagnétique de puissance du type comportant un contact mobile porté par une tige de commande est caractérisé en ce que des moyens d'assemblage du type baïonnette interviennent entre le contact mobile et la tige de commande pour montage du contact mobile sur la tige de commande et en ce que ces moyens d'assemblage du type baïonnette sont configurés pour réaliser un blocage en rotation du contact mobile sur sa tige de commande.According to the invention, a mobile electromagnetic contactor power unit of the type comprising a movable contact carried by a control rod is characterized in that bayonet type assembly means intervene between the movable contact and the control rod for mounting the movable contact on the control rod and in that these assembly means of the bayonet type are configured to achieve a locking rotation of the movable contact on its control rod.
Suivant l' invention un contacteur électromagnétique, notamment pour un moteur électrique d'un démarreur de moteur à combustion interne, du type sus-indiqué comportant un équipage mobile est caractérisé en ce qu'il comporte un équipage mobile selon l'invention. Ainsi le contact mobile, par l'intermédiaire de son trou ou orifice central, formant un passage, est mis en place sur la tige de commande puis est tourné pour venir en contact par sa face avant avec au moins une butée solidaire de la tige de commande.According to the invention, an electromagnetic contactor, in particular for an electric motor of an internal combustion engine starter, of the above-mentioned type comprising a moving element is characterized in that it comprises a moving element according to the invention. Thus the movable contact, through its hole or central orifice, forming a passage, is placed on the control rod and is rotated to come into contact with its front face with at least one stop integral with the rod. ordered.
Grâce à l'invention par rapport à la solution de la figure 1 on supprime deux pièces à savoir la rondelle de butée et la rondelle à griffes en sorte que la solution est simple, économique et permet de réduire le nombre de pièces à stocker. En outre le montage est plus rapide et sans risque, d'une part, de pollution de la chambre de contact par des particules arrachées sur la tige de commande lors du montage de la rondelle à griffes du fait de la suppression de cette rondelle à griffes, et d'autre part, d' oubli de montage de la rondelle de butée et/ou de la rondelle à griffes.Thanks to the invention compared to the solution of Figure 1 is removed two pieces namely the thrust washer and the claw washer so that the solution is simple, economical and reduces the number of parts to be stored. In addition, the assembly is faster and without risk, on the one hand, pollution of the contact chamber by particles torn off the control rod during assembly of the claw washer due to the removal of this washer claws and on the other hand, forgetting the mounting of the thrust washer and / or the claw washer.
On améliore également la fiabilité du contacteur par suppression de la rondelle élastique à griffes sollicitée en fatigue lors du fonctionnement du contacteur.The reliability of the contactor is also improved by eliminating the resilient spring washer subjected to fatigue during operation of the contactor.
Cette fiabilité est augmentée dans le temps du fait que les moyens d'assemblage du type baïonnette sont configurés pour réaliser un blocage en rotation du contact mobile par rapport à la tige de commande.This reliability is increased over time because the bayonet type assembly means are configured to realize a rotational locking of the movable contact relative to the control rod.
La durée de vie de l'équipage mobile est ainsi augmentée, tout en diminuant le nombre de pièces.The lifespan of the moving equipment is thus increased, while reducing the number of parts.
De plus on obtient un bon maintien du positionnement du contact mobile et un bon guidage de celui-ci.In addition we obtain a good maintenance of the positioning of the movable contact and a good guidance thereof.
Par rapport à la solution à sertissage décrite dans le document FR A 2 741 996 on améliore également la fiabilité du contacteur du fait de l'absence de sertissage au niveau du contact mobile faisant apparaître dans certains cas des amorces de rupture et/ ou des fissures.Compared to the crimped solution described in document FR A 2,741,996, the reliability of the contactor is also improved because of the absence of crimping at the mobile contact, which in certain cases reveals failure primers and / or cracks. .
Il en résulte que la solution selon l'invention permet d'augmenter la durée de vie du contacteur. On peut donc arrêter et redémarrer le monteur à combustion interne un plus grand nombre de fois. Ainsi dans le cas d'une application à un véhicule automobile on peut arrêter le moteur à combustion interne au feu rouge et le redémarrer pour réduire la consommation de carburant.As a result, the solution according to the invention makes it possible to increase the life of the contactor. It is therefore possible to stop and restart the internal combustion engine a greater number of times. Thus in the case of an application to a motor vehicle can stop the internal combustion engine at a red light and restart it to reduce fuel consumption.
De plus dans tous les cas on peut monter aisément, voir manuellement, le contact mobile sur la tige de commande.Moreover in all cases it is possible to mount easily, see manually, the movable contact on the control rod.
Le montage du contact mobile sur sa tige de commande est réalisé sans précautions particulières, est robuste et tire partie du ressort de maintien qui sollicite le contact mobile en direction d'au moins une butée rigide solidaire de la tige de commande. De préférence, pour une meilleure fiabilité, la butée est d'un seul tenant avec la tige de commande.The mounting of the movable contact on its control rod is performed without special precautions, is robust and takes advantage of the holding spring which urges the movable contact towards at least one rigid abutment integral with the control rod. Preferably, for better reliability, the stop is in one piece with the control rod.
Brève description des dessinsBrief description of the drawings
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 : - la figure 1 est une vue partielle en coupe axiale d'un contacteur de démarreur selon l'état de la technique qui est illustré en position de contact;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 the accompanying drawings in which: - Figure 1 is a partial view in axial section of a contactor of starter according to the state of the art which is illustrated in the contact position;
- la figure 2 est une vue en perspective de l' équipage mobile selon l'invention équipé du ressort de rappel ou ressort de coupure; - la figure 3 est une vue en perspective éclatée de la figure 2 ;- Figure 2 is a perspective view of the movable assembly of the invention equipped with the return spring or breaking spring; FIG. 3 is an exploded perspective view of FIG. 2;
-la figure 4 est une vue en perspective du contact mobile ;FIG 4 is a perspective view of the movable contact;
- la figure 5 est une vue de face du contact mobile ;- Figure 5 is a front view of the movable contact;
-la figure 6 est une vue en perspective de la tige de commandeFIG 6 is a perspective view of the control rod
- les figures 7 et 8 sont des vues du deuxième tronçon de la tige de commande selon respectivement les lignes 7-7 et 8-8 de la figure 6 pour montrer les sections des portions avant et arrière du deuxième tronçon ;- Figures 7 and 8 are views of the second section of the control rod respectively along the lines 7-7 and 8-8 of Figure 6 to show the sections of the front and rear portions of the second section;
- les figures 9 à 12 illustrent les différentes phases du montage baïonnette du contact mobile sur sa tige de commande associée.- Figures 9 to 12 illustrate the different phases of bayonet mounting of the movable contact on its associated control rod.
Description d'exemples de réalisation de l'invention Sur les figures, des éléments identiques, similaires ou analogues sont désignés par les mêmes chiffres de référence.Description of embodiments of the invention In the figures, identical, similar or similar elements are designated by the same reference numerals.
Dans la figure 2 on voit en 100 l'équipage mobile selon l' invention et en 48 le ressort de rappel associé à cet équipage, cet ensemble 100-48 se montant en lieu et place de celui de la figure 1.In FIG. 2, the moving assembly according to the invention is shown at 100 and the return spring associated with this crew at 48, this assembly 100-48 being mounted in place of that of FIG. 1.
Plus précisément dans les figures 2 à 12 on n'a représenté que la tige de commande 20 le ressort de maintien 42, le contact mobile 30 et le ressort de rappel 48 du contacteur électromagnétique, ces quatre pièces, mieux visibles dans la figure 3, se montant en lieu et place des six pièces 20, 42, 30, 46 et 48 de la figure 1 en sorte que l' invention permet de réduire le nombre de pièces.More precisely in FIGS. 2 to 12, only the control rod 20, the retaining spring 42, the movable contact 30 and the return spring 48 of the electromagnetic contactor, these four parts, better visible in FIG. mounting in place of the six parts 20, 42, 30, 46 and 48 of Figure 1 so that the invention reduces the number of parts.
Les ressorts 48 et 42 sont des ressorts hélicoïdaux de forme cylindrique comme à la figure 1. Le diamètre externe du ressort 42 est ici supérieur au diamètre externe du ressort 48. Le ressort 42 est plus raide que le ressort 48.The springs 48 and 42 are helicoidal springs of cylindrical shape as in FIG. 1. The external diameter of the spring 42 is here greater than the external diameter of the spring 48. The spring 42 is stiffer than the spring 48.
La tige 20 de commande, le ressort de maintien 42 et le contact mobile 30, porté par la tige 20, appartiennent à l' équipage mobile 100.The control rod 20, the retaining spring 42 and the movable contact 30, carried by the rod 20, belong to the mobile assembly 100.
Par rapport à la figure 1 on modifie de manière décrite ci-après une partie de la tige de commande 20 et le trou ou orifice central 246 du contact mobile 30 sous la forme d'une plaquette globalement de forme rectangulaire comme à la figure 1.With reference to FIG. 1, a portion of the control rod 20 and the central hole or orifice 246 of the movable contact 30 are modified in the manner described below in the form of a generally rectangular plate as in FIG. 1.
La tige 20 est en matériau électriquement isolant, tandis que le contact mobile 30, porté par la tige 20, est en matériau électriquement conducteur.The rod 20 is made of electrically insulating material, while the movable contact 30, carried by the rod 20, is of electrically conductive material.
Le contact mobile 30 est dans ce mode de réalisation métallique par exemple en cuivre, et est adapté à coopérer par sa face avant 29 avec les têtes 32 et 36 des bornes 36 et 38 de la figure 1 et par sa face arrière 31 avec l'extrémité avant du noyau fixe du contacteur électromagnétique de la figure 1. Le ressort de maintien 42 est en appui sur l' épaulement arrière 44 de la tige 20 et sur la face arrière 31 du contact mobile 30 d'orientation transversale par rapport à l' axe de symétrie axial X-X (Figure 6) que présente la tige 20. Ce contact 30 est obtenu ici par découpage à la presse. La tige 20 est ici en matière plastique isolante renforcée éventuellement par des fibres. Elle est par exemple en PA 6-6 et est obtenu par moulage permettant l'obtention des formes souhaitées. En variante la tige 20 est en céramique et est obtenue par exemple par frittage.The mobile contact 30 is in this metallic embodiment, for example copper, and is adapted to cooperate by its front face 29 with the heads 32 and 36 of the terminals 36 and 38 of Figure 1 and its rear face 31 with the front end of the fixed core of the electromagnetic contactor of Figure 1. The retaining spring 42 is supported on the rear shoulder 44 of the rod 20 and on the rear face 31 of the movable contact 30 of transverse orientation relative to the axial axis of symmetry XX (Figure 6) that has the rod 20. This contact 30 is obtained here by cutting with the press. The rod 20 is here made of insulating plastic optionally reinforced with fibers. It is for example PA 6-6 and is obtained by molding to obtain the desired shapes. Alternatively the rod 20 is ceramic and is obtained for example by sintering.
La tige 20 présente une extrémité arrière 26, une extrémité avant 28 et, entre ces extrémités 26, 28, une partie arrière de guidage 133, 134, l' épaulement arrière 44, une partie centrale 129, 130, 131 et une partie avant 128 de montage du ressort de rappel 48.The rod 20 has a rear end 26, a front end 28 and, between these ends 26, 28, a rear guide portion 133, 134, the rear shoulder 44, a central portion 129, 130, 131 and a front portion 128 for mounting the return spring 48.
L' extrémité arrière 26, ici en forme de chanfrein pour faciliter le montage de la tige dans le trou central du noyau fixe de la figure 1, est destinée à être sollicitée au niveau de sa face arrière par la rondelle avant 18 du noyau mobile de la figure 1 pour déplacement axial de la tige 20.The rear end 26, here chamfered to facilitate the mounting of the rod in the central hole of the fixed core of Figure 1, is intended to be urged at its rear face by the front washer 18 of the movable core of FIG. 1 for axial displacement of the rod 20.
Le chanfrein 26 (figure 6) se raccorde à l'avant à un tronçon 134 de forme cylindrique prolongé lui-même vers l'avant par un tronçon 133 de forme cylindrique de diamètre légèrement supérieur à celui du tronçon 134. En pratique l' usinage du tronçon 133 est réalisé avec des tolérances plus précises car ce tronçon 133 est destiné à coopérer de manière intime avec la périphérie interne du noyau fixe délimitant le trou 22 de la figure 1. Dans le mode de réalisation de la figure 1 on peut adopter cet agencement qui permet de réduire les coûts. Les tronçons 134, 133 constituent la partie arrière de guidage de la tige, qui en variante ne comporte que le tronçon 133.The chamfer 26 (FIG. 6) is connected at the front to a section 134 of cylindrical shape extended itself forward by a section 133 of cylindrical shape with a diameter slightly greater than that of the section 134. In practice the machining of the section 133 is made with more precise tolerances because this section 133 is intended to cooperate intimately with the inner periphery of the fixed core delimiting the hole 22 of FIG. 1. In the embodiment of FIG. arrangement that reduces costs. The sections 134, 133 constitute the rear guide portion of the rod, which in a variant comprises only the section 133.
L' épaulement 44 est délimité par une face avant 144 et par une face arrière 132.The shoulder 44 is delimited by a front face 144 and a rear face 132.
Plus précisément le tronçon 133 se raccorde à l'avant à l' épaulement arrière 44 de la tige 20, plus précisément à la face arrièreMore specifically, the section 133 is connected at the front to the rear shoulder 44 of the rod 20, more precisely to the rear face
132 de l' épaulement 44. Cette face arrière 132 est évasée en étant ici de forme tronconique, adaptée à la forme du passage central du noyau fixe de la figure 1. Cet épaulement. 44 s'étend en saillie radiale par rapport à la partie arrière 133, 134 et constitue, par l' intermédiaire de sa face avant 144, d'orientation transversale par rapport à l'axe central X-X de la tige, une butée arrière pour le ressort de maintien 42.132 of the shoulder 44. This rear face 132 is flared here being of frustoconical shape, adapted to the shape of the central passage of the fixed core of Figure 1. This shoulder. 44 extends radially projecting relative to the rear portion 133, 134 and is, through its front face 144, transverse orientation relative to the central axis XX of the rod, a rear stop for the holding spring 42.
Ici l'épaulement 44 est en forme de collerette annulaire dont le diamètre externe est supérieur à celui de la partie arrière 133, 134 et à un quatrième tronçon cylindrique 142 de montage de l'extrémité arrière du ressort de maintien 42 enfilée sur ce tronçon 142 appartenant à la partie centrale de la tige 20. Le tronçon 142 est délimité par la face avant 144. L' extrémité avant 28 est ici de forme tronconique, en variante de forme arrondie ou en forme d'ogive, pour faciliter le montage du ressort de rappel 48. Cette extrémité se raccorde à un premier tronçonHere the shoulder 44 is in the form of an annular collar whose outer diameter is greater than that of the rear portion 133, 134 and a fourth cylindrical section 142 for mounting the rear end of the holding spring 42 threaded on this section 142 belonging to the central part of the rod 20. The section 142 is delimited by the front face 144. The front end 28 is here of frustoconical shape, alternatively rounded or ogival-shaped, to facilitate the mounting of the return spring 48. This end is connected to a first section
128 de forme cylindrique constituant la partie avant de la tige 20. L'extrémité arrière du ressort de rappel 48 se monte, ici à jeu de montage, par enfilage sur ce tronçon 128.128 of cylindrical form constituting the front portion of the rod 20. The rear end of the return spring 48 is mounted, here with mounting clearance, by threading on this section 128.
La partie centrale de la tige 20 s'étend entre la face avant de l' épaulement 44 et le premier tronçon 128 de montage du ressort 48.The central part of the rod 20 extends between the front face of the shoulder 44 and the first section 128 for mounting the spring 48.
Cette partie centrale comporte d' avant en arrière, dans le sens allant de gauche à droite dans la figure 6, un deuxième tronçon 129, un troisième tronçon 130, un chanfrein de raccordement 131 et un quatrième tronçon à savoir le tronçon 142 de montage du ressort de maintien 42.This central portion comprises, from left to right in the direction from left to right in FIG. 6, a second section 129, a third section 130, a connecting chamfer 131 and a fourth section, namely the mounting section 142 of FIG. holding spring 42.
Selon une caractéristique de l' invention le contact mobile 30 est monté sur sa tige de commande 20 par l'intermédiaire de moyens d'assemblage du type baïonnette.According to a feature of the invention the movable contact 30 is mounted on its control rod 20 by means of assembly means bayonet type.
Dans les figures 2 h 12 c'est, d' une part, le deuxième tronçonIn figures 2 h 12 it is, on the one hand, the second section
129 et le troisième tronçon 130 de la partie centrale de la tige 20 et d'autre part, le trou ou orifice central 246 du contact mobile 30, qui sont configurés pour appartenir aux moyens d'assemblage du type baïonnette. Ici par rapport à la figure 1 on diminue la longueur axiale du tronçon de montage 142 du ressort de maintien 42, ainsi que la longueur axiale du premier tronçon 128 de montage du ressort de rappel 48 pour conserver la longueur axiale de la tige 20.129 and the third section 130 of the central portion of the rod 20 and secondly, the central hole or hole 246 of the movable contact 30, which are configured to belong to the bayonet type assembly means. Here, with respect to FIG. 1, the axial length of the mounting section 142 of the holding spring 42 is reduced, as is the axial length of the first section 128 for mounting the return spring 48 to maintain the axial length of the rod 20.
La diminution de longueur axiale du premier tronçon 128 est rendue possible grâce à la suppression de la rondelle à griffes et de la rondelle de butée de la figure 1. Ce premier tronçon 128 est donc ménagé par rapport à celui de la figure 1 car il est moins sollicité mécaniquement.The reduction in the axial length of the first section 128 is made possible by the suppression of the claw washer and the thrust washer of FIG. 1. This first section 128 is therefore arranged with respect to that of FIG. less mechanically stressed.
Le troisième tronçon 130 est de forme cylindrique et présente un diamètre externe inférieur à celui du quatrième tronçon 142, le chanfrein 131 étant un chanfrein de raccordement entre les tronçons 130 et 142.The third section 130 is cylindrical in shape and has a smaller external diameter than the fourth section 142, the chamfer 131 being a connecting chamfer between the sections 130 and 142.
Dans ce mode de réalisation le quatrième tronçon 142 et le troisième tronçon 130 ont un diamètre externe supérieur à celui des tronçons 133, 134. Bien entendu cela dépend des applications.In this embodiment the fourth section 142 and the third section 130 have an outer diameter greater than that of the sections 133, 134. Of course this depends on the applications.
Le premier tronçon 128 et le troisième tronçon 130 ont dans ce mode de réalisation le même diamètre externe. Le troisième tronçon 130 est un tronçon dit tronçon de rotation permettant une rotation du contact mobile 30, tandis que le deuxième tronçon 129 et un tronçon dit tronçon de passage et de blocage du contact mobile 30. Ce deuxième tronçon 129 autorise également le passage du ressort 42.The first section 128 and the third section 130 have in this embodiment the same external diameter. The third section 130 is a so-called section section of rotation allowing a rotation of the movable contact 30, while the second section 129 and a so-called said section of passage and blocking of the movable contact 30. This second section 129 also allows the passage of the spring 42.
Dans cet exemple de réalisation le deuxième tronçon 129 comporte une portion arrière 124, 123 (figure 7) de section carrée à coins arrondis. Cette portion arrière présente un diamètre D au niveau de ces coins et une largeur Dl entre ces coins. Le deuxième tronçon 129 présente une portion avant 127, 123In this embodiment, the second section 129 has a rear portion 124, 123 (Figure 7) of square section with rounded corners. This rear portion has a diameter D at these corners and a width D1 between these corners. The second section 129 has a front portion 127, 123
(figure 8) avec deux méplats 123 parallèles séparés l'un de l'autre par une distance D l égale à celle des côtés D l du carré de sa portion arrière. Ces deux méplats 123 sont raccordés entre eux par deux portions cylindriques 127 de diamètre D égal à celui sur lequel sont situés les coins arrondis de sa portion arrière.(Figure 8) with two flats 123 parallel separated from each other by a distance D l equal to that of the sides D of the square of its rear portion. These two flats 123 are connected to each other by two cylindrical portions 127 of diameter D equal to that on which are located the rounded corners of its rear portion.
Le diamètre D est égal, au jeu de montage près, à celui du diamètre interne de celui du ressort 42 et à celui du quatrième tronçon 142. Ainsi le ressort 42 se monte simplement par enfilage axial d'avant en arrière sur la tige 20 jusqu'à sa venue en butée contre la face avant 144 de l'épaulement arrière 44, qui présente le plus grand diamètre externe de la tige 20.The diameter D is equal, close to the mounting clearance, to that of the internal diameter of that of the spring 42 and that of the fourth section 142. Thus the spring 42 is mounted simply by axial threading back and forth on the rod 20 until 'at its abutment against the front face 144 of the rear shoulder 44, which has the largest outer diameter of the rod 20.
L' ouverture ou orifice central 246 du contact mobile 30 à une forme complémentaire à celle de la portion avant 123, 127 du deuxième tronçon 129. Cette ouverture 246 (Figure 5) est donc délimitée par deux méplats parallèles séparés l' un de l'autre par une distance D' 1 égale au jeu de montage près à la largeur D l du carré de la portion arrière du tronçon 129. Ces deux méplats sont raccordés entre eux par deux portions cylindriques diamétralement opposées de diamètre D' égal au jeu de montage prés à celui D sur lequel sont situés les coins arrondis de la portion avant du tronçon 129.The opening or central orifice 246 of the movable contact 30 has a shape complementary to that of the front portion 123, 127 of the second section 129. This opening 246 (FIG. 5) is therefore delimited by two parallel flats separated from each other. other by a distance D '1 equal to the mounting clearance close to the width D 1 of the square of the rear portion of the section 129. These two flats are connected to each other by two diametrically opposed cylindrical portions of diameter D' equal to the mounting clearance near that D on which are located the rounded corners of the front portion of section 129.
Il ressort de la description et des dessins que le deuxième tronçon 129 comporte deux premières faces parallèles 123 séparées l'une de l'autre par la distance Dl . Ces deux premières faces s'étendent entre les deux tronçons cylindriques 128 et 130 de diamètre externe égale à cette distance D l . Ces deux premières faces 123 s'étendent donc de manière continue axialement le long du deuxième tronçon 129 et constituent les deux méplats de la portion avant 123, 127 et deux des côtés de la portion arrière 123, 124 du deuxième tronçon 129.It is apparent from the description and drawings that the second section 129 has two first parallel faces 123 separated from each other by the distance Dl. These first two faces extend between the two cylindrical sections 128 and 130 of external diameter equal to this distance D l. These first two faces 123 thus extend continuously axially along the second section 129 and constitute the two flats of the front portion 123, 127 and two of the sides of the rear portion 123, 124 of the second section 129.
Ce deuxième tronçon 129 comporte également deux deuxièmes faces parallèles 124 séparées l'une de l'autre par la distance D l . Ces deuxièmes faces 124 sont perpendiculaires aux premières faces 123 et constituent les deux autres côtés de la portion arrière 123, 124 du deuxième tronçon.This second section 129 also has two second parallel faces 124 separated from each other by the distance D 1. These second faces 124 are perpendicular to the first faces 123 and constitute the other two sides of the rear portion 123, 124 of the second section.
Les deux faces 124 s'étendent vers l'avant à partir du troisième tronçon 130 de diamètre externe D l inscrit dans le carré à coins arrondi de diamètre D comme mieux visible à la figure 6.The two faces 124 extend forwardly from the third section 130 of external diameter D 1 inscribed in the square with rounded corners of diameter D as best seen in FIG.
Les deuxièmes faces 124 s' étendent axialement chacune jusqu'à la face arrière 125 d'une butée 127. Chaque butée 127, saillante radialement et formant un relief, est en forme de portion cylindrique de diamètre externe D égal, au jeu de tolérances près, à celui du quatrième tronçon 142 et à celui des portions cylindriques complémentaires de l' orifice 246 du contact mobile 30. Les butées 127 constituent les portions cylindriques de la portion avant 123, 127 du deuxième tronçon. Ces butées sont rigides.The second faces 124 extend axially each up to the rear face 125 of an abutment 127. Each abutment 127, protruding radially and forming a relief, is in the form of a cylindrical portion of external diameter D equal to the set of tolerances by , that of the fourth section 142 and that of the complementary cylindrical portions of the orifice 246 of the movable contact 30. The stops 127 constitute the cylindrical portions of the front portion 123, 127 of the second section. These stops are rigid.
La face avant 126 de chaque butée 127 saillante sert de butée à la face arrière du ressort 48 prenant appui par sa face avant sur le fond du capot 40 de la figure 1.The front face 126 of each protruding stop 127 serves as a stop on the rear face of the spring 48 supported by its front face on the bottom of the cover 40 of FIG. 1.
Les deux butées rigides 127 remplacent les moyens de butée avant 46 de la figure 1 et sont donc des butées avant ici rigides.The two rigid stops 127 replace the front abutment means 46 of FIG. 1 and are therefore rigid front stops here.
Ces deux butées 127, consistant en des portions cylindriques de diamètre externe D, sont diamétralement opposées et sont donc entaillées par les faces 124 et c' est la raison pour laquelle on voit à la figure 6 la présence de bras non référencés. Ces bras délimitent latéralement chaque deuxième face 124 ainsi que les coins arrondis de la portion arrière du deuxième tronçon 129. Ces bras présentent une périphérie externe implantée sur une circonférence de diamètre D égal à celui du quatrième tronçon 142.These two stops 127, consisting of cylindrical portions of outer diameter D, are diametrically opposed and are therefore notched by the faces 124 and this is the reason why we see in Figure 6 the presence of unreferenced arms. These arms laterally delimit each second face 124 as well as the rounded corners of the rear portion of the second section 129. These arms have an outer periphery implanted on a circumference of diameter D equal to that of the fourth section 142.
Ainsi qu'il ressort de ce qui précède le deuxième tronçon est un tronçon de passage autorisant par ses premières faces 123 et ses portions cylindriques 127 le passage axial de l'ouverture 246 du contact mobile 30. Ce contact 30 est ainsi enfilé axialement sur le deuxième tronçonAs is apparent from the foregoing, the second section is a passage section allowing, by its first faces 123 and its cylindrical portions 127, the axial passage of the opening 246 of the movable contact 30. This contact 30 is thus axially threaded on the second section
(figure 10) à rencontre de la force exercée par le ressort 42 pour parvenir jusqu' au troisième tronçon 130 (figure 1 1), le ressort 42 étant enfilé par avance sur la tige 20.(Figure 10) against the force exerted by the spring 42 to achieve until the third section 130 (Figure 1 1), the spring 42 being threaded in advance on the rod 20.
Lors de cette première étape les faces parallèles du contact mobile 30, constituées par les deux méplats de l'ouverture 246 du contact mobile, sont enfilées axialement à jeu de montage sur les première faces 123 du tronçon 129 et le ressort 42 est comprimé axialement, ce ressort prenant appui sur la face avant 144 de l'épaulement 44 et sur la face arrière 31 du contact mobile faisant office de plateau de pression et l' épaulement 44 de plateau de réaction. Ce deuxième tronçon 129, appartenant aux moyens d'assemblage du type baïonnette, est donc configuré pour autoriser un enfilage axial du contact mobile sur ce deuxième tronçon 129.During this first step, the parallel faces of the movable contact 30, constituted by the two flats of the opening 246 of the movable contact, are axially threaded with mounting clearance on the first faces 123 of the section 129 and the spring 42 is compressed axially, this spring bearing on the front face 144 of the shoulder 44 and on the rear face 31 of the movable contact acting as a pressure plate and the shoulder 44 of the reaction plate. This second section 129, belonging to the bayonet type assembly means, is therefore configured to allow axial threading of the movable contact on this second section 129.
Dans une seconde étape on utilise le troisième tronçon cylindrique 130 pour effectuer une rotation de 90° du contact mobile 30 et ce à r encontre de la force exercée par le ressort. Durant cette phase on tourne l'ouverture 246 du contact mobile 30 et on amène les méplats de cette ouverture 246 en parallélisme avec les deuxièmes faces 124. Bien entendu la longueur axiale du troisième tronçon 130 est au moins égale à l' épaisseur du contact mobile 30 au niveau de son orifice 246. Cette longueur est de préférence supérieure à l'épaisseur du contact mobile.In a second step, the third cylindrical section 130 is used to rotate the movable contact 30 by 90 ° against the force exerted by the spring. During this phase, the opening 246 of the movable contact 30 is rotated and the flats of this opening 246 are brought into parallelism with the second faces 124. Of course, the axial length of the third section 130 is at least equal to the thickness of the moving contact. 30 at its orifice 246. This length is preferably greater than the thickness of the movable contact.
Le troisième tronçon est donc un tronçon de rotation pour le contact mobile 30.The third section is therefore a section of rotation for the movable contact 30.
Ce troisième tronçon 130, appartenant aux moyens d'assemblage du type baïonnette, est donc configuré pour autoriser une rotation du contact mobile sur ce troisième 130 prolongeant vers l' arrière le deuxième tronçon 129.This third section 130, belonging to the bayonet type assembly means, is therefore configured to allow rotation of the movable contact on the third 130 extending rearward the second section 129.
Dans une troisième étape on relâche l'effort axial exercé auparavant sur la face avant 29 du contact mobile 30 à l'aide d'un outil presseur non visible, en sorte que la face avant 29 du contact mobile, sous la sollicitation du ressort 42, vient en butée axial sur les deux faces arrières 125 des deux butées avant 127 comme visible à la figure 12.In a third step the axial force exerted previously on the front face 29 of the movable contact 30 is released using a non-visible pressing tool, so that the front face 29 of the movable contact, under the bias of the spring 42 , comes into axial abutment on the two rear faces 125 of the two front stops 127 as visible in FIG. 12.
En même temps les deux méplats de l' ouverture 246 du contact mobile 30 coopèrent avec les deux deuxièmes faces 124 du deuxième tronçon 129 en sorte que le contact mobile 30 est bloqué en rotation. On obtient ainsi un bon maintien en position du contact mobile ainsi qu'un bon guidage de celui-ci. Les moyens d'assemblage du type baïonnette sont donc configurés, selon une caractéristique de l'invention, pour réaliser un blocage en rotation du contact mobile par rapport à la tige de commande.At the same time the two flats of the opening 246 of the movable contact 30 cooperate with the two second faces 124 of the second section 129 so that the movable contact 30 is locked in rotation. This provides a good hold in position of the movable contact and a good guidance thereof. The assembly means of the bayonet type are configured, according to a feature of the invention, to achieve a locking in rotation of the movable contact relative to the control rod.
Bien entendu la longueur axiale des deuxièmes faces 124 du deuxième tronçon 129 est au moins égale à l'épaisseur du contact mobileOf course, the axial length of the second faces 124 of the second section 129 is at least equal to the thickness of the moving contact.
30 au niveau de son orifice 246. Cette longueur est de préférence supérieure à celle de l'épaisseur du contact mobile et dépend des applications afin d'autoriser le mouvement axial requis du contact mobile par rapport à la tige 20 pour que ce contact occupe sa position reculée active.30 at its orifice 246. This length is preferably greater than that of the thickness of the moving contact and depends on the applications in order to allow the required axial movement of the movable contact with respect to the rod 20 so that this contact occupies its position. active backward position.
Ce deuxième tronçon 129 est un tronçon multifonctions, qui constitue donc pour le contact mobile 30 un tronçon de passage, de bocage axial dans un sens et de blocage en rotation de ce contact monté sur sa tige 20 par un montage du type baïonnette, des moyens d'assemblage du type baïonnette intervenant entre le contact mobile 30 et la tige de commande 20 pour montage du contact mobile sur sa tige.This second section 129 is a multifunction section, which therefore constitutes for the movable contact 30 a passage section, axial grooving in one direction and rotational locking of this contact mounted on its rod 20 by a bayonet type mounting, means bayonet type assembly intervening between the movable contact 30 and the control rod 20 for mounting the movable contact on its rod.
Ces moyens font intervenir une rotation, ici de 90° du contact mobile. Cette rotation est réalisable de manière aisée à l'aide d'un outil.These means involve a rotation, here 90 ° of the movable contact. This rotation is easily achieved using a tool.
En effet on tire partie de la forme rectangulaire du contact mobile pour saisir par exemple les côtés longitudinaux du contact 30 afin d'effectuer une rotation.Indeed one takes advantage of the rectangular shape of the movable contact to enter for example the longitudinal sides of the contact 30 to perform a rotation.
L' invention tire partie de la présence du ressort 42 qui sollicite en permanence le contact mobile 30 en direction des butées 127. Cette position de contact sans jeu correspond à la position avancée de repos du contact mobile, qui se déplace axialement sur sa tige 20 pour atteindre une position reculée active lorsque le contact mobile est en contact avec les têtes 32, 34 de la figure 1.The invention takes advantage of the presence of the spring 42 which permanently solicits the movable contact 30 in the direction of the stops 127. This position of contact without play corresponds to the advanced position of rest of the movable contact, which moves axially on its rod. to reach an active retracted position when the movable contact is in contact with the heads 32, 34 of Figure 1.
Ce montage est stable grâce à la présence des deux butées 127 et des deux faces 124 qui offrent une grande surface ou portée de contact au contact mobile.This assembly is stable thanks to the presence of two stops 127 and two faces 124 which provide a large surface or contact area to the moving contact.
Ce montage peut être robotisé et fait appel à un outillage simple sans déformation du contact mobile contrairement à un assemblage par sertissage demandant des efforts plus importants.This assembly can be robotic and uses a simple tooling without deformation of the moving contact unlike a crimp assembly requiring greater efforts.
Ce montage peut même être réalisé de manière manuelle. On appréciera que le deuxième tronçon 129 est obtenu aisément. Par exemple ce tronçon est obtenu par fraisage des faces 123, 124 à partir d'un tronçon cylindrique.This assembly can even be done manually. It will be appreciated that the second section 129 is easily obtained. For example this section is obtained by milling the faces 123, 124 from a cylindrical section.
En variante l' ouverture 246 du contact 30 et la portion avant complémentaire du deuxième tronçon 129 ont une autre forme par exemple une forme carrée ou rectangulaire.In a variant, the opening 246 of the contact 30 and the complementary front portion of the second section 129 have another shape, for example a square or rectangular shape.
Les butées 127 saillantes radialement ont en variante une forme complémentaire de celle de l'orifice 246, par exemple carrée ou rectangulaire.The radially projecting stops 127 have alternatively a shape complementary to that of the orifice 246, for example square or rectangular.
En variante une seule butée 127, un seul méplat et seulement deux faces 123, 124 sont prévus.Alternatively a single stop 127, a single flat and only two faces 123, 124 are provided.
Dans ce mode de réalisation la ou les butées 127 sont d'un seul tenant avec la tige.In this embodiment the stop or stops 127 are in one piece with the rod.
Dans un autre mode de réalisation la ou les butées 127 sont rapportées à fixation sur la tige. Dans tous les cas la ou les butées 127 sont rigides et solidaires de la tige.In another embodiment the stop or stops 127 are attached to fixation on the rod. In all cases the stop or stops 127 are rigid and integral with the rod.
Bien entendu dans un autre mode de réalisation le montage du type baïonnette peut faire intervenir au moins deux ergots saillants radialement à l'intérieur de l'ouverture 246 du contact 30. Ces ergots, par exemple en forme de pattes, sont engagés chacun dans une rainure complémentaire prévue dans le quatrième tronçon 142 prolongé axialement vers l' avant en sorte que la présence des tronçons 129, 130 n'est pas obligatoire. Les ergots sont dans un mode de réalisation diamétralement opposés. Dans ce cas chaque rainure présente un premier tronçon axial, débouchant à l' avant du côté du premier tronçon 128 et prolongé à son extrémité arrière par un tronçon circonférentiel de la même manière que l'ouverture d' une douille de lampe d'éclairage.Of course, in another embodiment, the bayonet-type mounting may involve at least two radially projecting lugs inside the opening 246 of the contact 30. These lugs, for example in the form of lugs, are each engaged in a complementary groove provided in the fourth section 142 extended axially forward so that the presence of sections 129, 130 is not mandatory. The lugs are in a diametrically opposed embodiment. In this case each groove has a first axial section, opening in front of the side of the first section 128 and extended at its rear end by a circumferential section in the same manner as the opening of a lighting lamp socket.
Ce tronçon circonférentiel est dans un mode de réalisation prolongé à son extrémité circonférentiel par un deuxième tronçon axial plus court que le premier tronçon pour un blocage en rotation du contact mobile sur la tige.This circumferential section is in an embodiment extended at its circumferential end by a second axial section shorter than the first section for locking in rotation of the movable contact on the rod.
Bien entendu la largeur des rainures dépend de celle des ergots. Bien entendu, l'invention ne se limite pas aux modes de réalisations décrits précédemment, et elle trouve aussi à s'appliquer pour différentes formes de contacteurs électromagnétiques de puissance. En particulier l' invention s'applique à tous les types de contacteurs pour les moteurs électriques des démarreurs usuels de moteur à combustion interne.Of course the width of the grooves depends on that of the lugs. Of course, the invention is not limited to the embodiments described above, and it also applies to different forms of electromagnetic contactors power. In particular, the invention applies to all types of contactors for electric motors of conventional internal combustion engine starters.
Ainsi le contacteur peut être implanté au dessus du moteur électrique du démarreur comme dans le document FR A 2 795 884. En variante le contacteur est déporté en étant par exemple implanté transversalement à l' arrière du moteur électrique du démarreur comme dans le document FR A 2 843 427.Thus the contactor can be installed above the electric motor of the starter as in the document FR A 2 795 884. In a variant, the contactor is offset, for example being implanted transversely to the rear of the electric motor of the starter as in document FR A 2,843,427.
Le ressort dents contre dents, appelé également ressort d'engagement, est implanté soit dans le contacteur comme à la figure 1, soit à l'extérieur du contacteur entre le lanceur et le levier d'actionnement comme à la figure 1 du document EP B 0 960 276.The spring teeth against teeth, also called engagement spring, is implanted either in the switch as in Figure 1, or outside the contactor between the launcher and the actuating lever as in Figure 1 of EP B 0,960,276.
A la lumière de ce document on voit que le contacteur peut comporter une bobine de maintien et une bobine d'appel. En variante le contacteur comporte qu'une bobine comme décrit dans le document FR A 2 795 884.In the light of this document we see that the contactor may comprise a holding coil and a call coil. As a variant, the contactor comprises a coil as described in document FR A 2 795 884.
En variante un moteur électrique spécifique est prévu pour actionner le levier en sorte que le noyau mobile est simplifié en étant dépourvu de moyens de liaison avec le levier. La présence du levier d'actionnement n'est pas obligatoire, le moteur électrique du démarreur dans un mode de réalisation tournant à vitesse lente par l'intermédiaire d'un enroulement en dérivation.Alternatively a specific electric motor is provided to operate the lever so that the movable core is simplified without being connected to the lever. The presence of the operating lever is not mandatory, the electric motor of the starter in an embodiment running at a slow speed via a bypass winding.
Le lanceur est soit à roue libre soit à embrayage à disques multiples. Le démarreur est un démarreur à réducteur de vitesse ou sans réducteur de vitesses.The launcher is either freewheel or multiple disk clutch. The starter is a starter with speed reducer or without gearbox.
Le lanceur comporte un pignon qui engrène avec une couronne dentée de démarrage comme décrit dans le document FR A 2 795 884.The launcher comprises a pinion which meshes with a toothed starter ring as described in document FR A 2 795 884.
En variante une transmission à courroie et poulie ou à chaîne et roues dentées intervient entre le démarreur et le vilebrequin du moteur à combustion interne, la roue libre étant par exemple implantée dans la poulie ou la roue dentée associée au vilebrequin du moteur à combustion interne, qui peut être fixe ou appartenir à un véhicule automobile, tel qu' un véhicule de tourisme ou un bateau. Le contacteur électromagnétique pour circuit de puissance selon l'invention peut appartenir à un coupleur de batteries par exemple de telle manière que deux batteries de 12V connectées auparavant en parallèle soit mises en série pour le démarrage et qu'une tension de 24V existe aux bornes du démarreur.Alternatively a belt transmission and pulley or chain and sprockets intervenes between the starter and the crankshaft of the internal combustion engine, the freewheel being for example implanted in the pulley or the toothed wheel associated with the crankshaft of the internal combustion engine, which may be stationary or belong to a motor vehicle, such as a passenger vehicle or a boat. The electromagnetic contactor for a power circuit according to the invention may belong to a battery coupler for example in such a way that two 12V batteries previously connected in parallel is put in series for starting and that a voltage of 24V exists at the terminals of the starter.
Le contacteur selon l' invention peut appartenir à un relais de couplage de deux démarreurs agissant en parallèle. The contactor according to the invention may belong to a coupling relay of two starters acting in parallel.

Claims

REVENDICATIONS
1. Equipage mobile pour contacteur électromagnétique de puissance, du type comportant un contact mobile (30) porté par une tige de commande (20), caractérisé en ce que des moyens d'assemblage du type baïonnette interviennent entre le contact mobile (30) et la tige de commande (20) pour montage du contact mobile (30) sur sa tige de commande (20) et en ce que les moyens d'assemblage du type baïonnette sont configurés pour réaliser un blocage en rotation du contact mobile (30) par rapport à la tige de commande (20).1. Mobile equipment for electromagnetic power contactor, of the type comprising a movable contact (30) carried by a control rod (20), characterized in that bayonet type assembly means intervene between the movable contact (30) and the control rod (20) for mounting the movable contact (30) on its control rod (20) and in that the bayonet-type assembly means are configured to immobilize the movable contact (30) in rotation by relative to the control rod (20).
2. Equipage mobile selon la revendication 1, caractérisé en ce qu' il comporte au moins une butée rigide (127) solidaire de la tige de commande (20) et en ce que la face avant (29) du contact mobile (30) est destinée à venir en contact avec la butée (127). Mobile equipment according to claim 1, characterized in that it comprises at least one rigid abutment (127) integral with the control rod (20) and in that the front face (29) of the movable contact (30) is intended to come into contact with the stop (127).
3. Equipage mobile selon l'une quelconque des revendications précédentes, caractérisé en ce qu' il comporte un épaulement (44) pour appui d'un ressort de maintien (42) en contact avec la face arrière (31) du contact mobile (30) et en ce que le ressort de maintien sollicite le contact mobile en direction de la butée (127). 3. Mobile equipment according to any one of the preceding claims, characterized in that it comprises a shoulder (44) for supporting a holding spring (42) in contact with the rear face (31) of the movable contact (30). ) and in that the holding spring biases the moving contact toward the stop (127).
4. Equipage selon la revendication 1, caractérisé en ce que la tige de commande (20) comporte un deuxième tronçon (129) appartenant aux moyens d'assemblage du type baïonnette et configuré pour autoriser un enfilage axial du contact mobile (30) sur ce deuxième tronçon (129).4. Crew according to claim 1, characterized in that the control rod (20) comprises a second section (129) belonging to the bayonet type assembly means and configured to allow axial threading of the movable contact (30) on this second section (129).
5. Equipage mobile selon la revendication 4, caractérisé en ce que la tige de commande (20) comporte un troisième tronçon ( 130) appartenant aux moyens d'assemblage du type baïonnette et configuré pour autoriser une rotation du contact mobile sur ce troisième ( 130) prolongeant vers l'arrière le deuxième tronçon ( 129) de la tige de commande (20). 5. Mobile crew according to claim 4, characterized in that the control rod (20) comprises a third section (130) belonging to the bayonet type assembly means and configured to allow rotation of the movable contact on the third (130). ) extending rearwardly the second section (129) of the control rod (20).
6. Equipage mobile selon la revendication 5, caractérisé en ce que le deuxième tronçon (129) comporte une portion arrière comprenant deux premières faces parallèles (123) séparées l'une de l' autre par une distance (D l) et deux deuxièmes faces parallèles (124) perpendiculaires aux premières faces (123), en ce que les premières faces (123) sont séparées l'une de l'autre par la même distance (D l) que celle séparant les deux premières faces (123) et en ce que le troisième tronçon (130) est de forme cylindrique de diamètre externe (D l) égal à la distance entre les premières (123) et deuxièmes (124) faces parallèles6. Mobile equipment according to claim 5, characterized in that the second section (129) comprises a rear portion comprising two first parallel faces (123) separated from one another by a distance (D l) and two second faces parallel (124) perpendicular to the first faces (123), in that the first faces (123) are separated from each other by the same distance (D 1) as that separating the first two faces (123) and in what the third section (130) is of cylindrical shape of external diameter (D l) equal to the distance between the first (123) and second (124) parallel faces
7. Equipage mobile selon la revendication 6, caractérisé en ce que le deuxième tronçon ( 129) comporte une portion avant (123, 127) comportant deux butées diamétralement opposées ( 127), en ce que les deux premières faces (123) s'étendent de manière continue axialement le long du deuxième tronçon (129) et en ce que les deux deuxièmes faces (124) s' étendent de l'arrière du deuxième tronçon (129) jusqu'à la face arrière (125) des butées (127). 7. Mobile equipment according to claim 6, characterized in that the second section (129) comprises a front portion (123, 127) having two diametrically opposed stops (127), in that the first two faces (123) extend continuously axially along the second section (129) and in that the two second faces (124) extend from the rear of the second section (129) to the rear face (125) of the stops (127). .
8. Equipage mobile selon la revendication 7, caractérisé en ce que le contact mobile (30) présente un orifice (246) de forme complémentaire à celui de la portion avant du deuxième tronçon (129).8. Mobile equipment according to claim 7, characterized in that the movable contact (30) has an orifice (246) of complementary shape to that of the front portion of the second section (129).
9. Equipage mobile selon la revendication 8, caractérisé en ce que le contact mobile (30) présente un orifice (246) délimité par deux méplats parallèles destinés, après rotation sur le troisième tronçon ( 130), à coopérer avec les deuxièmes faces (124) du deuxième tronçon (129) pour blocage en rotation du contact mobile (30) sur sa tige de commande (20).9. Mobile equipment according to claim 8, characterized in that the movable contact (30) has an orifice (246) delimited by two parallel flats intended, after rotation on the third section (130), to cooperate with the second faces (124). ) of the second section (129) for rotational locking of the movable contact (30) on its control rod (20).
10. Equipage mobile selon la revendication 9, caractérisé en ce que les deux butées (127) sont en forme de portion cylindrique, en ce que le contact mobile (30) présente un orifice (246) délimité par deux méplats parallèles et distants l'un de l'autre d'une distance égale à la distance entre les deux premières faces parallèles (123) du deuxième tronçon10. Mobile equipment according to claim 9, characterized in that the two stops (127) are in the form of a cylindrical portion, in that the movable contact (30) has an orifice (246) delimited by two flat parallel and remote flats. one of the other by a distance equal to the distance between the first two parallel faces (123) of the second section
(129) de la tige de commande (20) et en ce que les deux méplats sont raccordés entre eux deux portions cylindriques de forme complémentaire aux butées (127).(129) of the control rod (20) and in that the two flats are connected between them two cylindrical portions of complementary shape to the stops (127).
1 1. Equipage mobile selon l'une quelconque des revendications 7 à 10, caractérisé en ce que la longueur axiale du troisième tronçonMobile crew according to any one of claims 7 to 10, characterized in that the axial length of the third section
(130) et des deux deuxièmes faces ( 124) est au moins égale à l'épaisseur du contact mobile (30) au niveau de son orifice (246).(130) and the two second faces (124) is at least equal to the thickness of the movable contact (30) at its orifice (246).
12. Equipage mobile selon la revendication 11 , caractérisé en ce que le deuxième (129) et le troisième tronçon (130) sont implanté entre un premier tronçon (128) de montage d'un ressort de rappel (48) prenant appui sur la face avant ( 126) des butées (127) et un quatrième tronçon de montage (142) d'un ressort de maintien prenant appui sur la face arrière (31) du contact mobile (30) et sur un épaulement arrière (44) de la tige de commande (20). 12. Movable crew according to claim 11, characterized in that the second (129) and the third section (130) are located between a first portion (128) for mounting a return spring (48) bearing on the face before (126) stops (127) and a fourth mounting section (142) of a holding spring bearing on the rear face (31) of the movable contact (30) and on a rear shoulder (44) of the rod control (20).
13. Equipage selon la revendication 12, caractérisé en ce que le premier tronçon (128) est de forme cylindrique de diamètre externe égal à celui du troisième tronçon ( 130) et en ce que le quatrième tronçon (142) est de forme cylindrique présentant un diamètre (D) égal à celui des butées ( 127).13. Crew according to claim 12, characterized in that the first section (128) is of cylindrical shape with an external diameter equal to that of the third section (130) and in that the fourth section (142) is of cylindrical shape having a diameter (D) equal to that of the stops (127).
14. Contacteur électromagnétique, comportant un équipage mobile comprenant un contact mobile (30) porté par une tige de commande (20), caractérisé en ce qu'il comporte un équipage mobile doté de moyens d' assemblage du type baïonnette selon la revendication 4. 14. An electromagnetic contactor comprising a moving element comprising a movable contact (30) carried by a control rod (20), characterized in that it comprises a moving element equipped with bayonet type assembly means according to claim 4.
15. Contacteur pour un moteur électrique d'un démarreur de combustion interne selon la revendication 14, caractérisé en ce qu'il comporte un capot avant (40) portant des bornes de contact fixes (36, 38), un noyau (fixe (24) destiné à agir sur l' extrémité arrière (26) de la tige de commande (20), un noyau mobile ( 16) et au moins une bobine ( 14) destinée, lorsqu'elle est activée électriquement, à déplacer le noyau mobile (16) agissant sur l'extrémité arrière de la tige de commande (20) pour établir un contact électrique entre le contact mobile (30) et les bornes de contact fixes (36, 38). 15. Contactor for an electric motor of an internal combustion starter according to claim 14, characterized in that it comprises a front cover (40) carrying fixed contact terminals (36, 38), a core (fixed (24 ) for acting on the rear end (26) of the control rod (20), a movable core (16) and at least one coil (14) for electrically energizing the moving core ( 16) acting on the rear end of the control rod (20) to make electrical contact between the movable contact (30) and the fixed contact terminals (36, 38).
EP06842142.9A 2005-12-15 2006-12-11 Moving element for an electromagnetic contactor, and contactor comprising such an element Not-in-force EP1961030B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06842142T PL1961030T3 (en) 2005-12-15 2006-12-11 Moving element for an electromagnetic contactor, and contactor comprising such an element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0512711A FR2895143B1 (en) 2005-12-15 2005-12-15 MOBILE CREW FOR ELECTROMAGNETIC CONTACTOR AND CONTACTOR COMPRISING SUCH A CREW
PCT/FR2006/051331 WO2007068852A2 (en) 2005-12-15 2006-12-11 Moving element for an electromagnetic contactor, and contactor comprising such an element

Publications (2)

Publication Number Publication Date
EP1961030A2 true EP1961030A2 (en) 2008-08-27
EP1961030B1 EP1961030B1 (en) 2013-07-17

Family

ID=37034768

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06842142.9A Not-in-force EP1961030B1 (en) 2005-12-15 2006-12-11 Moving element for an electromagnetic contactor, and contactor comprising such an element

Country Status (7)

Country Link
EP (1) EP1961030B1 (en)
JP (1) JP2009519571A (en)
CN (1) CN101322208B (en)
BR (1) BRPI0619878B1 (en)
FR (1) FR2895143B1 (en)
PL (1) PL1961030T3 (en)
WO (1) WO2007068852A2 (en)

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FR2957711B1 (en) * 2010-03-22 2016-10-14 Valeo Equip Electr Moteur MOBILE CREW FOR ELECTROMAGNETIC CONTACTOR AND ELECTROMAGNETIC CONTACTING POWER SWITCH
FR2978500B1 (en) 2011-07-26 2015-03-13 Valeo Equip Electr Moteur LAUNCHER MOBILE ASSEMBLY - GEAR CONTROL LEVER WITH A STARTING CROWN OF A THERMAL MOTOR AND STARTER OF A THERMAL MOTOR COMPRISING SUCH AN ASSEMBLY
DE102011080477B4 (en) 2011-08-05 2021-09-02 Seg Automotive Germany Gmbh Starter and starter relay with anti-twist protection
DE102012201967B4 (en) * 2012-02-09 2019-01-17 Te Connectivity Germany Gmbh Switching contact assembly and kit and assembly method for this
DE102012201966A1 (en) * 2012-02-09 2013-08-14 Tyco Electronics Amp Gmbh Switching contact module with switching contact bridge and contact bridge holder
CN103988274A (en) * 2012-03-21 2014-08-13 西门子公司 Contact slider unit for a switching unit, in particular for a circuit breaker
WO2013139386A1 (en) 2012-03-21 2013-09-26 Siemens Aktiengesellschaft Contact slider unit for a switching unit, in particular for a circuit breaker
FR3013396A1 (en) 2013-11-21 2015-05-22 Valeo Equip Electr Moteur STARTER MOTOR THERMAL MOTOR STARTER LAUNCHER AND STARTER COMPRISING SUCH LAUNCHER
FR3020716B1 (en) * 2014-05-05 2017-11-03 Valeo Equip Electr Moteur CONTACT DEVICE OF A STARTER SWITCH
FR3020715B1 (en) * 2014-05-05 2016-05-06 Valeo Equip Electr Moteur CONTACT DEVICE OF A STARTER SWITCH
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Also Published As

Publication number Publication date
CN101322208A (en) 2008-12-10
FR2895143B1 (en) 2011-03-18
JP2009519571A (en) 2009-05-14
BRPI0619878A2 (en) 2011-10-25
CN101322208B (en) 2011-07-06
WO2007068852A2 (en) 2007-06-21
FR2895143A1 (en) 2007-06-22
BRPI0619878B1 (en) 2016-03-22
PL1961030T3 (en) 2013-12-31
EP1961030B1 (en) 2013-07-17
WO2007068852A3 (en) 2007-08-09

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