EP1455133A1 - Vehicle headlamp comprising a movable shade equipped with locking means - Google Patents

Vehicle headlamp comprising a movable shade equipped with locking means Download PDF

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Publication number
EP1455133A1
EP1455133A1 EP04290487A EP04290487A EP1455133A1 EP 1455133 A1 EP1455133 A1 EP 1455133A1 EP 04290487 A EP04290487 A EP 04290487A EP 04290487 A EP04290487 A EP 04290487A EP 1455133 A1 EP1455133 A1 EP 1455133A1
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EP
European Patent Office
Prior art keywords
cover
projector
frame
magnetic attraction
locking means
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.)
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Application number
EP04290487A
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German (de)
French (fr)
Inventor
José Garcia
Jean-Claude Puente
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 Vision SAS
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Valeo Vision SAS
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Filing date
Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP1455133A1 publication Critical patent/EP1455133A1/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/689—Flaps, i.e. screens pivoting around one of their edges

Definitions

  • the present invention relates to a lighting projector for motor vehicle.
  • the present invention relates more particularly to a lighting projector for a motor vehicle, comprising a light source, an elliptical type reflector, the first of which fireplace is arranged near the source and a second focal point is arranged in the vicinity of the focal plane of a lens converging, and a movable cover which is pivotally mounted, by relative to a fixed frame, around an axis generally transverse, and who is likely to occupy a position angular concealment, in which it is arranged substantially vertically in the vicinity of the focal plane of the lens so to form a cut in the light beam produced by the projector, and a retracted angular position, a spring requesting the movable cover in its concealed position.
  • a electromagnet acts on the cover via a rod control, so as to cause the cover to pivot around a transverse axis, relative to its mount, from its angular position of concealment towards its angular position retracted.
  • the cover is recalled elastically towards its position occultation by means of a spring and by the effect of a counterweight arranged in a portion of the cover located under its axis transverse pivot.
  • the occultation position is defined by surfaces of stop of the cover which come into axial abutment against spans associated with the mount.
  • the headlamp being intended for use in a vehicle automotive, it must be able to withstand the stresses thermal and mechanical specific to such use.
  • the invention aims in particular to remedy this drawback.
  • the invention provides a projector of the type described above, characterized in that it further comprises less a locking means intervening between the frame and the cover to hold the cover in its concealed position.
  • a projector 10 for a motor vehicle which includes a lamp 12 mounted in the bottom of a reflector 14 of the elliptical type so that the light source, for example the filament of a lamp incandescence, where the electric arc of a discharge lamp, located in the vicinity of a first focus of the reflector 14.
  • the light source for example the filament of a lamp incandescence, where the electric arc of a discharge lamp, located in the vicinity of a first focus of the reflector 14.
  • the optical axis A-A is generally parallel to the axis longitudinal of the vehicle that the headlight 10 equips.
  • the optical axis A-A is here substantially horizontal, and it can be defined for example by the two focal points of the reflector 14.
  • the projector 10 includes a converging lens 18, for example plano-convex example, which is mounted at the front in a intermediate frame 20 fixed on a transverse surface front 22 of reflector 14.
  • the focal plane of the lens 18 passes in the vicinity of the second focus of the reflector 14.
  • the projector 10 includes a cover mobile 24 which is axially interposed between the reflector 14 and the intermediate frame 20, in the vicinity of the focal plane of the lens 18.
  • the movable cover 24 is pivotally mounted relative to a mount 26, around a transverse axis B-B, between a angular position of concealment and an angular position retracted.
  • the cache 24 In the angular position of concealment, which is shown in Figure 2, the cache 24 is contained overall in a vertical transverse plane, and in the angular position retracted, which is shown in Figure 1, the cover 24 extends in a plane close to the horizontal plane, so that pass the majority of the light rays emitted by the lamp 12.
  • the frame 26 is interposed axially between the frame intermediate 20 and the front transverse surface 22 of the reflector 14. Frame 26 is fixed.
  • the projector 10 comprises an actuator 28 which is designed to cause the pivoting of the cover 24 from its concealed position towards its retracted position.
  • the actuator 28 here comprises an electromagnet 30 likely to cause axial displacement of a rod control 32, so as to cause the cover to pivot mobile 24.
  • the cover 24 is here subjected to the action of a return spring 34, one end of which is trapped in the frame 26, and of which the other end urges the cover 24 towards its position occultation.
  • the spring 34 therefore urges the cover 24 towards the rear, in its concealed position, in abutment on a fixed part of the frame 26.
  • the spring 34 can be made in the form of a pin, the arms are fixed respectively on the frame 26 and on the cover 24, a loop of the spring 34 surrounding the pivot axis B-B.
  • the cover 24 here comprises two transverse surfaces of stop 36, 38 which are provided to come into axial support respectively against two associated scopes 40, 42 which are made on the front transverse face 44 of part of the frame 26.
  • the abutment surfaces 36, 38 and the surfaces 40, 42 are arranged here in the vicinity of the transverse ends cover 24 and frame 26 respectively.
  • the projector 10 In the rest position of the cover 24, that is to say the concealed position in which it is kept under the action of spring 34, the projector 10 emits a light beam regulatory with a cutoff.
  • the upper edge 47 of the cover 24 includes a profile adapted so as to form a shape cut regulatory, for example for the creation of a crossing.
  • the cover 24 When the cover 24 is controlled towards its position retracted, by means of the actuator 28, then the cover 24 is mainly found outside the path of light rays emitted by the lamp 12.
  • the projector 10 then produces a beam seamless lighting, such as a high beam, or main beam.
  • the projector 10 includes at least one locking means 48, 50 intervening between the frame 26 and the cover 24 to retain it in its hidden position.
  • the locking means here include elements of magnetic attraction 48, 50.
  • the magnetic attraction elements 48, 50 are here permanent magnets which are fixed on the rear transverse face 46 of a part of the frame 26, facing the bearing surfaces 40, 42.
  • the frame 26 is made of an alloy ferrous, as well as the cover 24.
  • the magnets 48, 50 make it possible to keep the cover 24 glued by its abutment surfaces 36, 38 against the ranges 40, 42.
  • the magnets 48, 50 are chosen so that the magnetic attraction force they exert on the cache 24, as well as the return force of spring 34, are less higher than the pivoting force exerted by the actuator 28 on the cover 24, to control it in the retracted position.
  • the actuator 28 must fight against the restoring force of the spring 34 as well as against the magnetic attraction force which is exerted by the magnets 48, 50.
  • Magnets 48, 50 and their magnetic attraction force can also be adapted according to constraints, in particular vibratory, to which the projector 10 is susceptible to be submissive.
  • the movable cover 24 may include surfaces stopper 36, 38 made of ferrous alloy which are mounted on a workpiece made of another material.
  • the permanent magnets 48, 50 can be replaced by electromagnets.
  • the electromagnets are then controlled by attraction of so as to retain the cover 24 in its concealed position.
  • the magnets 48, 50 can be fixed on the cover 24 and exert their magnetic attraction force on spans 40, 42.
  • An advantage of the projector 10 according to the invention is that the locking system 48, 50 is easily adaptable to parts produced in series, without requiring modifications complex.
  • cover 24 is maintained in the concealed position by the locking means 48, 50, which is preferable to a stowed position which can cause glare for oncoming traffic opposite.
  • the locking means 48, 50 here of the type electromagnetic, can be replaced by means of mechanical locking, for example by a device of interlocking, or by a device of "Velcro TM", or by a suction device, these mechanical means intervening between the frame 26 and the cover 24.
  • the invention can be adapted on a device of occultation existing, for example on that described in the document FR-A-2,796,449.
  • the frame 26 may comprise only one means lock 48 or 50.

Abstract

The headlight has magnets (48,50) provided between a fixed assembly (26) and a cover (24) for retaining the cover in an occultation position. The cover has two transversal stop surfaces (36,38) axially supported against sides (40,42) provided on front transversal side (44) of the mounting. The stop surfaces are attracted by the sides (40,42) under magnetic attraction force exerted by the magnets.

Description

La présente invention concerne un projecteur d'éclairage pour véhicule automobile.The present invention relates to a lighting projector for motor vehicle.

La présente invention concerne plus particulièrement un projecteur d'éclairage pour véhicule automobile, comprenant une source lumineuse, un réflecteur du type elliptique dont un premier foyer est agencé au voisinage de la source et dont un second foyer est agencé au voisinage du plan focal d'une lentille convergente, et un cache mobile qui est monté pivotant, par rapport à une monture fixe, autour d'un axe globalement transversal, et qui est susceptible d'occuper une position angulaire d'occultation, dans laquelle il est agencé sensiblement verticalement au voisinage du plan focal de la lentille de manière à former une coupure dans le faisceau lumineux produit par le projecteur, et une position angulaire escamotée, un ressort sollicitant le cache mobile dans sa position d'occultation.The present invention relates more particularly to a lighting projector for a motor vehicle, comprising a light source, an elliptical type reflector, the first of which fireplace is arranged near the source and a second focal point is arranged in the vicinity of the focal plane of a lens converging, and a movable cover which is pivotally mounted, by relative to a fixed frame, around an axis generally transverse, and who is likely to occupy a position angular concealment, in which it is arranged substantially vertically in the vicinity of the focal plane of the lens so to form a cut in the light beam produced by the projector, and a retracted angular position, a spring requesting the movable cover in its concealed position.

Les documents DE-A-38 06 658 et FR-A-2.796.449 divulguent un tel type de projecteur.Documents DE-A-38 06 658 and FR-A-2796.449 disclose such a type of projector.

Dans le document FR-A-2.796.449 par exemple, un électroaimant agit sur le cache par l'intermédiaire d'une tige de commande, de manière à provoquer le pivotement du cache autour d'un axe transversal, par rapport à sa monture, depuis sa position angulaire d'occultation vers sa position angulaire escamotée.In document FR-A-2,796,449 for example, a electromagnet acts on the cover via a rod control, so as to cause the cover to pivot around a transverse axis, relative to its mount, from its angular position of concealment towards its angular position retracted.

Le cache est rappelé élastiquement vers sa position d'occultation au moyen d'un ressort et par l'effet d'un contrepoids agencé dans une portion du cache située sous son axe transversal de pivotement.The cover is recalled elastically towards its position occultation by means of a spring and by the effect of a counterweight arranged in a portion of the cover located under its axis transverse pivot.

La position d'occultation est définie par des surfaces de butée du cache qui viennent en appui axial contre des portées associées de la monture. The occultation position is defined by surfaces of stop of the cover which come into axial abutment against spans associated with the mount.

Le projecteur étant prévu pour être utilisé dans un véhicule automobile, il doit être en mesure de supporter les contraintes thermiques et mécaniques propres à une telle utilisation.The headlamp being intended for use in a vehicle automotive, it must be able to withstand the stresses thermal and mechanical specific to such use.

Or, on a constaté que, sous certaines fréquences de vibrations, la force de rappel du ressort n'est pas suffisante pour maintenir le cache en position d'occultation, par appui contre les portées. Le cache tend alors à s'écarter des portées en laissant passer des rayons lumineux qui sont émis par le projecteur au-dessus de la coupure et qui occasionnent donc des éblouissements pour les conducteurs des véhicules circulant en sens opposé.However, it has been found that, under certain frequencies of vibrations, the spring return force is not sufficient to keep the cover in the concealed position, by pressing against the worn. The cover then tends to deviate from the ranges, leaving pass rays of light that are emitted by the projector above of the cut and which therefore cause glare for drivers of vehicles traveling in opposite.

L'invention vise notamment à remédier à cet inconvénient.The invention aims in particular to remedy this drawback.

Dans ce but, l'invention propose un projecteur du type décrit précédemment, caractérisé en ce qu'il comporte en outre au moins un moyen de verrouillage intervenant entre la monture et le cache pour retenir le cache dans sa position d'occultation.To this end, the invention provides a projector of the type described above, characterized in that it further comprises less a locking means intervening between the frame and the cover to hold the cover in its concealed position.

Selon d'autres caractéristiques de l'invention :

  • le moyen de verrouillage comporte un élément d'attraction magnétique ;
  • en position d'occultation, le cache vient en appui axial, par au moins une surface de butée en alliage ferreux, contre une portée associée qui est réalisée dans une première face d'une partie de la monture, l'élément d'attraction magnétique est agencé en regard de la portée, sur une seconde face opposée à la première face, et cette partie de la monture est réalisée en alliage ferreux, de manière que l'élément d'attraction magnétique retienne le cache dans sa position d'occultation par attraction magnétique au travers de la monture ;
  • le cache comporte deux surfaces de butée qui sont agencées respectivement au voisinage des extrémités transversales du cache, et qui sont associées respectivement à deux portées de la monture, et la monture comporte deux éléments d'attraction magnétique qui sont associés respectivement aux deux portées ;
  • l'élément d'attraction magnétique est un aimant permanent ;
  • l'élément d'attraction magnétique est un électroaimant qui est commandé en attraction de manière à retenir le cache dans sa position d'occultation ;
  • le moyen de verrouillage est un moyen mécanique.
According to other characteristics of the invention:
  • the locking means comprises a magnetic attraction element;
  • in the concealed position, the cover comes to bear axially, by at least one abutment surface of ferrous alloy, against an associated bearing which is produced in a first face of a part of the frame, the magnetic attraction element is arranged opposite the bearing surface, on a second face opposite to the first face, and this part of the frame is made of ferrous alloy, so that the magnetic attraction element retains the cover in its position of concealment by magnetic attraction through the frame;
  • the cover comprises two abutment surfaces which are respectively arranged in the vicinity of the transverse ends of the cover, and which are associated respectively with two bearing surfaces of the frame, and the frame comprises two magnetic attraction elements which are associated respectively with the two bearing surfaces;
  • the magnetic attraction element is a permanent magnet;
  • the magnetic attraction element is an electromagnet which is attraction controlled so as to retain the cover in its concealed position;
  • the locking means is a mechanical means.

D'autres caractéristiques et avantages de l'invention apparaítront 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 en perspective qui représente un projecteur comportant un volet mobile réalisé conforme aux enseignements de l'invention;
  • la figure 2 est une vue arrière qui représente schématiquement le volet mobile de la figure 1 et sa monture.
Other characteristics 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 appended drawings in which:
  • Figure 1 is a perspective view which shows a projector having a movable flap made according to the teachings of the invention;
  • Figure 2 is a rear view which schematically shows the movable flap of Figure 1 and its mount.

Dans la description qui va suivre, des éléments identiques, similaires ou analogues seront désignés par les mêmes chiffres de référence.In the description which follows, identical elements, similar or analogous will be designated by the same numbers reference.

Pour la description de l'invention, on adoptera à titre non limitatif les orientations verticale, longitudinale et transversale selon le repère V, L, T indiqué aux figures.For the description of the invention, the following will not be adopted limiting the vertical, longitudinal and transverse orientations according to the reference V, L, T indicated in the figures.

Sur la figure 1, on a représenté un projecteur 10 pour un véhicule automobile qui comporte une lampe 12 montée dans le fond d'un réflecteur 14 du type elliptique de telle sorte que la source lumineuse, par exemple le filament d'une lampe à incandescence, où l'arc électrique d'une lampe à décharge, se situe au voisinage d'un premier foyer du réflecteur 14.In Figure 1, there is shown a projector 10 for a motor vehicle which includes a lamp 12 mounted in the bottom of a reflector 14 of the elliptical type so that the light source, for example the filament of a lamp incandescence, where the electric arc of a discharge lamp, located in the vicinity of a first focus of the reflector 14.

Dans la suite de la description, on utilisera à titre non limitatif une orientation d'arrière en avant, suivant l'axe optique longitudinal A-A du projecteur 10, qui correspond à une orientation de la droite vers la gauche en considérant la figure 1, c'est-à-dire dans le sens de propagation des rayons lumineux à la sortie du projecteur 10. In the following description, we will not use limiting an orientation from back to front, along the optical axis longitudinal A-A of the projector 10, which corresponds to a orientation from right to left considering figure 1, that is to say in the direction of propagation of the light rays at the projector output 10.

L'axe optique A-A est généralement parallèle à l'axe longitudinal du véhicule que le projecteur 10 équipe.The optical axis A-A is generally parallel to the axis longitudinal of the vehicle that the headlight 10 equips.

L'axe optique A-A est ici sensiblement horizontal, et il peut être défini par exemple par les deux foyers du réflecteur 14.The optical axis A-A is here substantially horizontal, and it can be defined for example by the two focal points of the reflector 14.

Le projecteur 10 comporte une lentille convergente 18, par exemple plan-convexe, qui est montée à l'avant dans une armature intermédiaire 20 fixée sur une surface transversale avant 22 du réflecteur 14.The projector 10 includes a converging lens 18, for example plano-convex example, which is mounted at the front in a intermediate frame 20 fixed on a transverse surface front 22 of reflector 14.

Le plan focal de la lentille 18 passe au voisinage du second foyer du réflecteur 14.The focal plane of the lens 18 passes in the vicinity of the second focus of the reflector 14.

De manière classique, le projecteur 10 comporte un cache mobile 24 qui est intercalé axialement entre le réflecteur 14 et l'armature intermédiaire 20, au voisinage du plan focal de la lentille 18.Conventionally, the projector 10 includes a cover mobile 24 which is axially interposed between the reflector 14 and the intermediate frame 20, in the vicinity of the focal plane of the lens 18.

Le cache mobile 24 est monté à pivotement par rapport à une monture 26, autour d'un axe transversal B-B, entre une position angulaire d'occultation et une position angulaire escamotée.The movable cover 24 is pivotally mounted relative to a mount 26, around a transverse axis B-B, between a angular position of concealment and an angular position retracted.

Dans la position angulaire d'occultation, qui est représentée sur la figure 2, le cache 24 est contenu globalement dans un plan transversal vertical, et dans la position angulaire escamotée, qui est représentée sur la figure 1, le cache 24 s'étend dans un plan proche du plan horizontal, de manière à laisser passer la majorité des rayons lumineux émis par la lampe 12.In the angular position of concealment, which is shown in Figure 2, the cache 24 is contained overall in a vertical transverse plane, and in the angular position retracted, which is shown in Figure 1, the cover 24 extends in a plane close to the horizontal plane, so that pass the majority of the light rays emitted by the lamp 12.

La monture 26 est intercalée axialement entre l'armature intermédiaire 20 et la surface transversale avant 22 du réflecteur 14. La monture 26 est fixe.The frame 26 is interposed axially between the frame intermediate 20 and the front transverse surface 22 of the reflector 14. Frame 26 is fixed.

Selon le mode de réalisation représenté ici, le projecteur 10 comporte un actionneur 28 qui est prévu pour provoquer le pivotement du cache 24 depuis sa position d'occultation vers sa position escamotée.According to the embodiment shown here, the projector 10 comprises an actuator 28 which is designed to cause the pivoting of the cover 24 from its concealed position towards its retracted position.

L'actionneur 28 comporte ici un électroaimant 30 susceptible de provoquer le déplacement axial d'une tige de commande 32, de manière à provoquer le pivotement du cache mobile 24.The actuator 28 here comprises an electromagnet 30 likely to cause axial displacement of a rod control 32, so as to cause the cover to pivot mobile 24.

Le cache 24 est ici soumis à l'action d'un ressort de rappel 34, dont une extrémité est prisonnière de la monture 26, et dont l'autre extrémité sollicite le cache 24 vers sa position d'occultation.The cover 24 is here subjected to the action of a return spring 34, one end of which is trapped in the frame 26, and of which the other end urges the cover 24 towards its position occultation.

Le ressort 34 sollicite donc le cache 24 vers l'arrière, dans sa position d'occultation, en butée sur une partie fixe de la monture 26.The spring 34 therefore urges the cover 24 towards the rear, in its concealed position, in abutment on a fixed part of the frame 26.

Le ressort 34 peut être réalisé en forme d'épingle, dont les branches sont fixées respectivement sur la monture 26 et sur le cache 24, une boucle du ressort 34 entourant l'axe de pivotement B-B.The spring 34 can be made in the form of a pin, the arms are fixed respectively on the frame 26 and on the cover 24, a loop of the spring 34 surrounding the pivot axis B-B.

Pour plus de précision sur la structure et le fonctionnement du cache mobile 24, on peut se reporter au document FR-A-2.796.449 (notamment pages 6 et 7), qui décrit un exemple de moyens de basculement d'un cache autour d'un axe transversal.For more details on structure and operation mobile cover 24, reference may be made to the document FR-A-2,796,449 (in particular pages 6 and 7), which describes an example means for tilting a cover around an axis transverse.

Le cache 24 comporte ici deux surfaces transversales de butée 36, 38 qui sont prévues pour venir en appui axial respectivement contre deux portées associées 40, 42 qui sont réalisées sur la face transversale avant 44 d'une partie de la monture 26.The cover 24 here comprises two transverse surfaces of stop 36, 38 which are provided to come into axial support respectively against two associated scopes 40, 42 which are made on the front transverse face 44 of part of the frame 26.

Les surfaces de butée 36, 38 et les portées 40, 42 sont agencées ici au voisinage des extrémités transversales respectivement du cache 24 et de la monture 26.The abutment surfaces 36, 38 and the surfaces 40, 42 are arranged here in the vicinity of the transverse ends cover 24 and frame 26 respectively.

De manière classique, le fonctionnement du projecteur 10 est le suivant.Conventionally, the operation of the projector 10 is the next.

Dans la position de repos du cache 24, c'est-à-dire la position d'occultation dans laquelle il est maintenu sous l'action du ressort 34, le projecteur 10 émet un faisceau d'éclairage réglementaire avec une coupure.In the rest position of the cover 24, that is to say the concealed position in which it is kept under the action of spring 34, the projector 10 emits a light beam regulatory with a cutoff.

En effet, le bord supérieur 47 du cache 24 comporte un profil adapté de manière à former une coupure de forme réglementaire, par exemple pour la réalisation d'un faisceau de croisement.Indeed, the upper edge 47 of the cover 24 includes a profile adapted so as to form a shape cut regulatory, for example for the creation of a crossing.

Lorsque le cache 24 est commandé vers sa position escamotée, au moyen de l'actionneur 28, alors le cache 24 se retrouve principalement en dehors du trajet des rayons lumineux émis par la lampe 12. Le projecteur 10 réalise alors un faisceau d'éclairage sans coupure, par exemple un faisceau de route, ou feu de route.When the cover 24 is controlled towards its position retracted, by means of the actuator 28, then the cover 24 is mainly found outside the path of light rays emitted by the lamp 12. The projector 10 then produces a beam seamless lighting, such as a high beam, or main beam.

Conformément aux enseignements de l'invention, le projecteur 10 comporte au moins un moyen de verrouillage 48, 50 intervenant entre la monture 26 et le cache 24 pour le retenir dans sa position d'occultation.In accordance with the teachings of the invention, the projector 10 includes at least one locking means 48, 50 intervening between the frame 26 and the cover 24 to retain it in its hidden position.

Les moyens de verrouillage comportent ici des éléments d'attraction magnétique 48, 50.The locking means here include elements of magnetic attraction 48, 50.

Les éléments d'attraction magnétique 48, 50 sont ici des aimants permanents qui sont fixés sur la face transversale arrière 46 d'une partie de la monture 26, en regard des portées 40, 42.The magnetic attraction elements 48, 50 are here permanent magnets which are fixed on the rear transverse face 46 of a part of the frame 26, facing the bearing surfaces 40, 42.

Avantageusement, la monture 26 est réalisée en alliage ferreux, de même que le cache 24.Advantageously, the frame 26 is made of an alloy ferrous, as well as the cover 24.

Lorsque le cache 24 occupe sa position d'occultation, les surfaces de butées 36, 38 sont attirées par les portées 40, 42 sous l'effet de la force d'attraction magnétique exercée par les aimants 48, 50 au travers de la monture 26.When the cover 24 occupies its concealed position, the abutment surfaces 36, 38 are attracted by the bearings 40, 42 under the effect of the magnetic attraction force exerted by magnets 48, 50 through the frame 26.

Par conséquent, les aimants 48, 50 permettent de maintenir le cache 24 collé par ses surfaces de butée 36, 38 contre les portées 40, 42.Consequently, the magnets 48, 50 make it possible to keep the cover 24 glued by its abutment surfaces 36, 38 against the ranges 40, 42.

Bien entendu, les aimants 48, 50 sont choisis de manière que la force d'attraction magnétique qu'ils exercent sur le cache 24, ainsi que la force de rappel du ressort 34, soient moins élevées que la force de pivotement exercée par l'actionneur 28 sur le cache 24, pour le commander en position escamotée.Of course, the magnets 48, 50 are chosen so that the magnetic attraction force they exert on the cache 24, as well as the return force of spring 34, are less higher than the pivoting force exerted by the actuator 28 on the cover 24, to control it in the retracted position.

En effet, pour commander le cache 24 en position escamotée, l'actionneur 28 doit lutter contre la force de rappel du ressort 34 ainsi que contre la force d'attraction magnétique qui est exercée par les aimants 48, 50.Indeed, to control the cover 24 in position retracted, the actuator 28 must fight against the restoring force of the spring 34 as well as against the magnetic attraction force which is exerted by the magnets 48, 50.

Les aimants 48, 50 et leur force d'attraction magnétique peuvent aussi être adaptés en fonction des contraintes, notamment vibratoires, auxquelles le projecteur 10 est susceptible d'être soumis.Magnets 48, 50 and their magnetic attraction force can also be adapted according to constraints, in particular vibratory, to which the projector 10 is susceptible to be submissive.

Selon une variante de réalisation (non représentée) de l'invention, seules les parties de la monture 26 qui forment les portées 40, 42 sont réalisées en alliage ferreux, le reste de la monture 26 pouvant être réalisé dans un autre matériau, par exemple en matière plastique.According to an alternative embodiment (not shown) of the invention, only the parts of the frame 26 which form the spans 40, 42 are made of ferrous alloy, the rest of the frame 26 which can be made of another material, for example plastic example.

De même, le cache mobile 24 peut comporter des surfaces de butée 36, 38 en alliage ferreux qui sont montées sur une pièce réalisée dans un autre matériau.Similarly, the movable cover 24 may include surfaces stopper 36, 38 made of ferrous alloy which are mounted on a workpiece made of another material.

Selon une variante de réalisation de l'invention (non représentée), les aimants permanents 48, 50 peuvent être remplacés par des électroaimants.According to an alternative embodiment of the invention (not shown), the permanent magnets 48, 50 can be replaced by electromagnets.

Les électroaimants sont alors commandés en attraction de manière à retenir le cache 24 dans sa position d'occultation.The electromagnets are then controlled by attraction of so as to retain the cover 24 in its concealed position.

Selon une autre variante de l'invention (non représentée), qui correspond à une simple inversion mécanique du mode de réalisation décrit précédemment, les aimants 48, 50 peuvent être fixés sur le cache 24 et exercer leur force d'attraction magnétique sur les portées 40, 42.According to another variant of the invention (not shown), which corresponds to a simple mechanical reversal of the previously described embodiment, the magnets 48, 50 can be fixed on the cover 24 and exert their magnetic attraction force on spans 40, 42.

Un avantage du projecteur 10 selon l'invention, est que le système de verrouillage 48, 50 est adaptable facilement sur les pièces réalisées en série, sans nécessiter des modifications complexes.An advantage of the projector 10 according to the invention is that the locking system 48, 50 is easily adaptable to parts produced in series, without requiring modifications complex.

Un autre avantage de l'invention est qu'en cas de défaillance de l'actionneur 28 ou du ressort 34, le cache 24 est maintenu en position d'occultation par les moyens de verrouillage 48, 50, ce qui est préférable à une position escamotée qui peut entraíner des éblouissements pour les véhicules circulant en sens opposé. Another advantage of the invention is that in the event of failure of actuator 28 or spring 34, cover 24 is maintained in the concealed position by the locking means 48, 50, which is preferable to a stowed position which can cause glare for oncoming traffic opposite.

Selon d'autres variantes de réalisation de l'invention (non représentées), les moyens de verrouillage 48, 50, ici du type électromagnétique, peuvent être remplacés par des moyens de verrouillage mécanique, par exemple par un dispositif d'emboítement, ou par un dispositif de « Velcro™ », ou encore par un dispositif de ventouse, ces moyens mécaniques intervenant entre la monture 26 et le cache 24.According to other alternative embodiments of the invention (not shown), the locking means 48, 50, here of the type electromagnetic, can be replaced by means of mechanical locking, for example by a device of interlocking, or by a device of "Velcro ™", or by a suction device, these mechanical means intervening between the frame 26 and the cover 24.

On note que l'invention peut être adaptée sur un dispositif d'occultation existant, par exemple sur celui qui est décrit dans le document FR-A-2.796.449.Note that the invention can be adapted on a device of occultation existing, for example on that described in the document FR-A-2,796,449.

Bien entendu, la monture 26 peut comporter un seul moyen de verrouillage 48 ou 50.Of course, the frame 26 may comprise only one means lock 48 or 50.

Claims (7)

Projecteur d'éclairage (10) pour véhicule automobile, comprenant une source lumineuse (12), un réflecteur (14) du type elliptique dont un premier foyer est agencé au voisinage de la source (12) et dont un second foyer est agencé au voisinage du plan focal d'une lentille convergente (18), et un cache mobile (24) qui est monté pivotant, par rapport à une monture fixe (26), autour d'un axe globalement transversal (B-B), et qui est susceptible d'occuper une position angulaire d'occultation, dans laquelle il est agencé sensiblement verticalement au voisinage du plan focal de la lentille (18) de manière à former une coupure dans le faisceau lumineux produit par le projecteur (10), et une position angulaire escamotée, un ressort (34) sollicitant le cache mobile (24) dans sa position d'occultation, caractérisé en ce qu'il comporte en outre au moins un moyen de verrouillage (48, 50) intervenant entre la monture (26) et le cache (24) pour retenir le cache (24) dans sa position d'occultation.Lighting projector (10) for a motor vehicle, comprising a light source (12), a reflector (14) of the elliptical type, a first focus of which is arranged in the vicinity of the source (12) and of which a second focus of which is arranged in the vicinity from the focal plane of a converging lens (18), and a movable cover (24) which is pivotally mounted, relative to a fixed frame (26), around a generally transverse axis (BB), and which is capable of occupy an angular concealment position, in which it is arranged substantially vertically in the vicinity of the focal plane of the lens (18) so as to form a cut in the light beam produced by the projector (10), and a retracted angular position , a spring (34) urging the movable cover (24) in its concealed position, characterized in that it further comprises at least one locking means (48, 50) intervening between the frame (26) and the cover (24) to retain the cover (24) in its used position ltation. Projecteur (10) selon la revendication précédente, caractérisé en ce que le moyen de verrouillage (48, 50) comporte un élément d'attraction magnétique.Projector (10) according to the preceding claim, characterized in that the locking means (48, 50) comprises a magnetic attraction element. Projecteur (10) selon la revendication précédente, caractérisé en ce que, en position d'occultation, le cache (24) vient en appui axial, par au moins une surface de butée (36, 38) en alliage ferreux, contre une portée (40, 42) associée qui est réalisée dans une première face (44) d'une partie de la monture (26), en ce que l'élément d'attraction magnétique (48, 50) est agencé en regard de la portée (40, 42), sur une seconde face (46) opposée à la première face (44), et en ce que cette partie de la monture (26) est réalisée en alliage ferreux, de manière que l'élément d'attraction magnétique (48, 50) retienne le cache (24) dans sa position d'occultation par attraction magnétique au travers de la monture (26).Projector (10) according to the preceding claim, characterized in that , in the concealed position, the cover (24) comes to bear axially, by at least one abutment surface (36, 38) made of ferrous alloy, against a bearing surface ( 40, 42) associated which is formed in a first face (44) of a part of the frame (26), in that the magnetic attraction element (48, 50) is arranged opposite the bearing (40 , 42), on a second face (46) opposite the first face (44), and in that this part of the frame (26) is made of ferrous alloy, so that the magnetic attraction element (48 , 50) retains the cover (24) in its concealed position by magnetic attraction through the frame (26). Projecteur (10) selon la revendication précédente, caractérisé en ce que le cache (24) comporte deux surfaces de butée (36, 38) qui sont agencées respectivement au voisinage des extrémités transversales du cache (24), et qui sont associées respectivement à deux portées (40, 42) de la monture (26), et en ce que la monture (26) comporte deux éléments d'attraction magnétique (48, 50) qui sont associés respectivement aux deux portées (40, 42).Projector (10) according to the preceding claim, characterized in that the cover (24) comprises two abutment surfaces (36, 38) which are arranged respectively in the vicinity of the transverse ends of the cover (24), and which are respectively associated with two bearing surfaces (40, 42) of the frame (26), and in that the frame (26) comprises two magnetic attraction elements (48, 50) which are associated respectively with the two bearing surfaces (40, 42). Projecteur (10) selon l'une quelconque des revendications 2 à 4, caractérisé en ce que l'élément d'attraction magnétique (48, 50) est un aimant permanent.Projector (10) according to any one of claims 2 to 4, characterized in that the magnetic attraction element (48, 50) is a permanent magnet. Projecteur (10) selon l'une quelconque des revendications 2 à 4, caractérisé en ce que l'élément d'attraction magnétique (48, 50) est un électroaimant qui est commandé en attraction de manière à retenir le cache (24) dans sa position d'occultation.Projector (10) according to any one of claims 2 to 4, characterized in that the magnetic attraction element (48, 50) is an electromagnet which is controlled in attraction so as to retain the cover (24) in its concealment position. Projecteur (10) selon la revendication 1, caractérisé en ce que le moyen de verrouillage est un moyen mécanique.Projector (10) according to claim 1, characterized in that the locking means is a mechanical means.
EP04290487A 2003-03-03 2004-02-23 Vehicle headlamp comprising a movable shade equipped with locking means Withdrawn EP1455133A1 (en)

Applications Claiming Priority (2)

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FR0302804A FR2852082B1 (en) 2003-03-03 2003-03-03 PROJECTOR FOR A MOTOR VEHICLE COMPRISING A MOBILE COVER EQUIPPED WITH MEANS FOR ATTACHING
FR0302804 2003-03-03

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EP2103870A3 (en) * 2008-03-21 2010-08-25 Koito Manufacturing Co., Ltd. Vehicle headlamp
CN103363449A (en) * 2012-03-28 2013-10-23 汽车照明罗伊特林根有限公司 Projection light module with adjustable light screen
CN104235746A (en) * 2013-06-11 2014-12-24 现代摩比斯株式会社 Headlamp shade
FR3023602A1 (en) * 2014-07-09 2016-01-15 Aml Systems CUTTING MECHANISM COMPRISING A CARRIER BAR OF A PERMANENT MAGNET.

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FR2873788B1 (en) * 2004-07-30 2006-10-13 Valeo Vision Sa ELLIPTICAL OPTICAL MODULE WITH OCCULTOR FOR MOTOR VEHICLE
US7140759B1 (en) * 2005-02-01 2006-11-28 Jen Mao Wang Light beam adjusting device for vehicle
KR20070094331A (en) * 2006-03-17 2007-09-20 에스엘 주식회사 Rotating-typed lamp shield driving apparatus providing multiple shield patterns, and lamp assembly using the same
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US8485705B2 (en) * 2011-01-13 2013-07-16 General Electric Company Projector type headlamp of maximized light collecting efficiency
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EP2103870A3 (en) * 2008-03-21 2010-08-25 Koito Manufacturing Co., Ltd. Vehicle headlamp
CN103363449A (en) * 2012-03-28 2013-10-23 汽车照明罗伊特林根有限公司 Projection light module with adjustable light screen
CN103363449B (en) * 2012-03-28 2017-07-28 汽车照明罗伊特林根有限公司 Projection light module with adjustable shadow shield
CN104235746A (en) * 2013-06-11 2014-12-24 现代摩比斯株式会社 Headlamp shade
CN104235746B (en) * 2013-06-11 2015-11-18 现代摩比斯株式会社 Headlamp lampshade
FR3023602A1 (en) * 2014-07-09 2016-01-15 Aml Systems CUTTING MECHANISM COMPRISING A CARRIER BAR OF A PERMANENT MAGNET.
US10180225B2 (en) 2014-07-09 2019-01-15 Aml Systems Cutoff mechanism comprising a bar carrying a permanent magnet

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FR2852082B1 (en) 2006-01-20
US20040174713A1 (en) 2004-09-09
US6997590B2 (en) 2006-02-14
FR2852082A1 (en) 2004-09-10

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