EP1455134B1 - Fastening device for a lamp - Google Patents

Fastening device for a lamp Download PDF

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Publication number
EP1455134B1
EP1455134B1 EP04290553A EP04290553A EP1455134B1 EP 1455134 B1 EP1455134 B1 EP 1455134B1 EP 04290553 A EP04290553 A EP 04290553A EP 04290553 A EP04290553 A EP 04290553A EP 1455134 B1 EP1455134 B1 EP 1455134B1
Authority
EP
European Patent Office
Prior art keywords
reflector
source
light
locking
bosses
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04290553A
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German (de)
French (fr)
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EP1455134A1 (en
Inventor
Jean Massé
Daniel Josquin
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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Publication date
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Publication of EP1455134A1 publication Critical patent/EP1455134A1/en
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Publication of EP1455134B1 publication Critical patent/EP1455134B1/en
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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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/194—Bayonet attachments
    • 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors

Definitions

  • the present invention relates to a fixing system for a locking lamp. Its main purpose is to propose a solution to facilitate reliable fixing lamps in the reflectors of different projectors devices, and so that the fixing operation does not damage certain elements undergoing friction or contacts during this operation.
  • dual-mode projectors which combine the functions of dipped headlights and long-range lights: for this purpose, it is possible in particular to have inside the two-mode projector a DFCS type light source (for Double Filament adapted to Complex Surfaces), which comprises two distinct filaments, a first filament being dedicated to a use of the light source as a dipped beam, and a second filament being dedicated to a use of the light source as a light of road.
  • DFCS type light source for Double Filament adapted to Complex Surfaces
  • All of the projectors that have just been mentioned comprise at least one light source and a reflector comprising an optical surface consisting of a set of reflective surfaces. whose arrangement and orientation are defined so as to produce a particular light beam.
  • the operation of fixing the light source on the reflector poses a number of difficulties, which will be detailed later, during the assembly of the projector device, especially since so-called "one touch" fixing operations are now preferred for fixing DFCS type light sources.
  • the so-called "one touch" fixing operations which can be translated by a simplified fixing operation, are operations which consist in fixing the light source on the reflector in a single operation, decomposable into a translational movement, to introduce the bulb of the light source through a cavity at the top of the reflector, combined with a rotational movement, to effect the locking of the light source on the reflector.
  • the document EP 0 713 998 has a system for fixing a lamp on the reflector.
  • the fastening system according to the invention is involved in the context of these simplified fixing operations.
  • these simplified fixing operations are, for the moment, essentially intended for DFCS light sources
  • the fastening system according to the invention is not limited to these light sources only, but concerns all the aforementioned projector devices, even those not using DFCS light sources, which are likely to resort to the previously mentioned simplified fixing operation.
  • a reflector 100 is shown in perspective on which a light source 200 is fixed.
  • the light source 200 essentially comprises a bulb 201, shown in dashed lines, fixed on a support 202.
  • the support 202 is, for its part, constituted by a first cylindrical portion 203, on which the bulb 201 is fixed and a vertex is centered on a lower face of a second cylindrical portion 204, itself terminated by an input means 205 of the light source 200 which allows to manipulate the latter.
  • the second cylindrical portion 204 is wider than the first portion cylindrical 203. It comprises, on its side wall, a set of fastening tabs 206. On the side wall of the first cylindrical portion 203, there is arranged a set of locking tabs 207.
  • the lower face of the second cylindrical portion 204 corresponds, at its periphery left accessible after the junction with the first cylindrical portion 203, to a contact zone 208 of the support 202.
  • This contact zone 208 is intended to bear on the outer face of the reflector 100 when the attachment is done.
  • the contact zone 208 comprises a set of flexible blades 209. These flexible blades follow the circular shape of the contact zone 208. They have a first end 210 molded into the thickness of the contact zone 208, and a second end 211 , said free end, which slightly exceeds the plane defined by the contact zone 208. Their function, in the state of the art, is to put the light source 200 in a reference plane perpendicular to the optical axis.
  • the reflector 100 consists of an outer face 101, visible at the figure 1 , and an inner face 102; the reflector 100 having been subjected, at the figure 2 , a section for the purposes of the description, the inner face 102 is visible in this figure.
  • the inner face 102 is also called the optical surface of the reflector: it is it which is responsible for reflecting the light rays emitted by the light source 200 when the latter is fixed on the reflector 100 and the bulb 201 radiates.
  • the reflector 100 has a circular opening 103 formed approximately at its top.
  • the opening 103 is disposed at one end of a termination 104 of the reflector 100, said termination 104 being of cylindrical shape.
  • a bearing surface 105 there is a bearing surface 105.
  • the bearing surface 105 has an inner face 106, belonging to the inner face 102 of the reflector 100, and an outer face 107 belonging to the outer face 101 of the reflector 100.
  • the bearing surface 105 has approximately the shape of a ring at the center of which we find the circular opening 103.
  • the circular opening 103 is completed by clearances 108 which are intended to let the locking tabs 207 of the light source 200 into the cylindrical terminal 104.
  • the simplified fixing operation of the light source 200 on the reflector 100 can be broken down into two distinct movements: a first movement, referred to as introduction, consists of a translation along the optical axis of the light source 200 towards the reflector 100 so that the bulb 201 is introduced into the circular opening 103 of the reflector 200.
  • the arrangement of the light source during the insertion movement is such that the locking tabs 207 are arranged facing the clearances 108 which complement the circular opening 103 so that they can also be introduced inside the reflector 100.
  • the flexible blades 209 are in contact with the outer face 107 of the bearing surface 105. It is then necessary to make a very slight pressure on the light source to slightly deform the flexible blades 209 so that the locking tabs 207 are total entered into the clearances 108.
  • the dimensions of the bearing surface 105 and the contact area 208 are such that at the end of the introduction step, the bearing surface 105 and the contact area 208 appear to form a single cylinder.
  • the second movement which consists of locking the light source 200 on the reflector 100, can then proceed.
  • the locking step consists of a rotational movement in a plane defined by the bearing surface 105 of the light source 200 with respect to the reflector 100.
  • Various steps of this movement are detailed with reference to the figure 3 .
  • the protuberances can example consist of a deformation of the free ends 211, for example of rounded shape, to present kinds of hooks, or be so-called complementary protuberances consisting of the addition of material on the free ends 211.
  • the bearing surface 105 is thus pinched between the locking tabs 207 and the contact zone 208 by the intermediate of the flexible blades 209.
  • each locking tab 207 moves on the inner face 106 where it meets a boss 301 disposed on this inner face 106. Each locking tab 207 then follows the curve of the boss, which has the effect of press the free end 211 of each flexible blade 209 against the contact zone 208 of the light source 200.
  • the representation of the figure 3 corresponds to this precise moment of the lock.
  • the acceleration phase must, according to the standards in force, mark the end of the locking movement. Consequently, in the case of, for example, DFCS light sources, the passage of the locking lugs 207 on the bosses 301 is carried out simultaneously with the insertion of each fastening tab 206 into a corresponding holding element 302, each element of maintaining 302 being disposed on the outer face 107 of the bearing surface 105 of the reflector 100 at a position suitable for receiving the fastening tab 206 which is intended for it.
  • the holding elements 302 may for example be clips, that is to say elastic members which, by deformation at the coupling, allow the realization of a mechanical connection or, in some cases, an electrical connection.
  • each fixing tongue 206 is inserted into the clip 302 which is intended for it; simultaneously, each locking tab 207 encounters a stop 304, disposed at a suitable position on the inner face 106 of the bearing surface 105 so that each locking tab 207 is in contact with a stop, which is specifically intended for it, when the locking position is reached. Moreover, when the locking position is reached, the free ends 211 of the flexible blades 209 are no longer resting on the contact zone 208. Their function is to keep the light source 200 in abutment according to a reference plane defined by the bearing surface 105 and perpendicular to the optical axis.
  • the bosses 301 provide a non-return effect which blocks the light source 200 in the locking position by preventing a rotational movement in a direction opposite to the locking direction 300 can be carried out without a significant external contribution.
  • At least one of the fixing tabs 206 is electrically conductive, and the clip associated therewith is arranged in a connector 303 which receives by elsewhere a power supply.
  • the following elements - the stops 304, the bosses 301, the clearances 108, the flexible blades 209, the fastening tabs 206 and the locking tabs 207 - are distributed in three sets of fasteners, each set of elements comprising one of these elements, said elements being arranged in such a way that they can cooperate to produce a fastening system operating according to the mechanism which has just been described.
  • the distribution of the sets of elements is such that the various elements are evenly spaced on the periphery of the parts that support them. In other exemplary embodiments, provision is made to have one, two, four or more sets of fasteners.
  • a first problem encountered with this type of fastening system is that the presence of the bosses 301 on the inner face 102 of the reflector 100 has several disadvantages:
  • the inner face 102 of the reflector is intended to be covered at least by a varnish; during the passage of the locking tabs 207, which are not deformable, on the bosses 301, there is a risk of tearing off the particles of varnish, coating particles in aluminum or even particles of the material constituting the reflector.
  • the latter may be composed of a metallic material, for example aluminum, or thermosetting or thermoplastic polymers. The torn particles then pollute the interior of the reflector 100 and disturb the integrity of the optical surface.
  • a second problem encountered with the type of fixing system described is that the insertion movement of the light source 200 into the reflector 100, which is a translation movement along the optical axis, is disturbed by an opposing movement going into the opposite direction of the insertion direction when the locking tabs 207 are driven by the inertial effect after having crossed the top of the bosses 301.
  • this movement in a direction opposite to the direction of insertion can be surprising for the user, it testifies above all that when crossing the bosses 301, the fixing tabs 206 have undergone a movement that made them leave their alignment position relative to the clips in which they must be inserted.
  • the translational movement of the insertion operation is followed by a rotational movement during which there is a parasitic translational movement with respect to the axis of insertion of the clips 302 and the tongues. associated fasteners 206.
  • the standards provide that the fastening clip-tongue connection is performed simultaneously to the crossing of the bosses 301, so as to benefit from the engagement of the fastening tabs 206 in the clips 302 of the inertial effect. It is therefore precisely at the moment when the locking lugs 207 start the passage of the bosses 301 that the fixing tabs 206 leave their alignment position with respect to the clips 302, thus deforming these clips 302 in which they have begun to enter. Even if the clips 302 are sized to absorb this variation, the presence of varnish, or the erosion of this varnish, on the bosses amplifies the antagonistic movement that can cause extreme cases in which the clips 302 are damaged. This damage is all the more annoying in cases where the clips are part of an electrical connector 303, electrical conduction may then run to fail, for example loss of electrical contact, at the clips 302.
  • a fixing system involving at least one boss, to cause an inertial effect in a locking phase and to provide a non-return effect, which is no longer arranged on an internal face of a reflector.
  • bosses are now placed on the outer face of the reflectors, in appropriate positions so that their crossing by protruding elements of the light source continues to mark the end of a locking operation of a light source on a reflector. This avoids the drawbacks of the state of the art related to the presence of varnish on the bosses, or the drawbacks associated with the tearing of material particles from the reflector or aluminum coating particles.
  • the flexible blades present on the contact area of the light sources, as protruding elements passing over the bosses during the locking operation, which greatly alleviates or even eliminates the parasitic movement that leaves, in the state of the art, the fixing tabs of their alignment position facing the clips in which they must be inserted.
  • the flexible blades also have a function of locking end of operation detector.
  • the fastening system according to the invention therefore makes it possible to dispense with a parasitic translation movement mentioned above, in particular by the transfer of the bosses arranged in the state of the art on the optical surface of the reflector towards the non-optical surface. reflector.
  • the presence of cavity (s) at the light source allows this (this) flexible tab (s) to bend inside this (these) cavity (s) without causing disruptive movement of the light source.
  • the invention therefore mainly relates to a fixing system, in a lighting device and / or automotive signaling projector type, between a light source, comprising in particular a bulb, a support, and a set of locking tabs, and a reflector, having an inner face and an outer face, said reflector having an opening near which the light source clamps the reflector between the locking tabs, in contact with the inner face, and a contact zone of the support, opposite the external face of the reflector, characterized in that the light source comprises at least one protruding element disposed on the contact zone of the support and in that the reflector comprises at least one boss on its outer face to identify the passage of one of the protruding elements of the set of protruding elements during a locking operation of the light source on the reflector.
  • the fastening system ensures both the mechanical locking of the light source to the reflector and the electrical connection of the said source: it is a lamp assembly known as the English lamp assembly "one touch ", where a single operation ensures the electrical and mechanical assembly of the lamp.
  • Another object of the invention is a motor vehicle equipped with a projector device using the fastening system having one of the features just mentioned.
  • DFCS lamps are known to have three radial electrical connection tabs, distributed around the lamp surround, the H11 lamps have a filament and only two radial tabs one being parallel / superimposed on the other.
  • These lamps may also have at least one cavity capable of cooperating with / receiving all or part of a protruding element according to the invention.
  • Another object of the present invention is an intervening reflector in the fastening system having any of the features just mentioned.
  • Another object of the invention is a method of locking a light source on a reflector, by means of a fastening system having at least one of the characteristics which have just been mentioned, and where a mechanical locking of the light source on the reflector is made simultaneously with an electrical connection of the light source.
  • the figure 4 shows an exemplary embodiment of the fastening system according to the invention.
  • a large part of the elements present at the figure 3 find themselves on the figure 4 . These elements retain the same function as in the state of the art described. Differences from the representation of the figure 3 , corresponding to the state of the art, are as follows:
  • the bosses 301 disposed, in the state of the art, have been replaced on the inner face 106 of the bearing surface 105 of the reflector 100, by at least one boss 400 which is disposed on the outer face 107 of the bearing surface 105.
  • the bosses 400 allow an installer to realize the end of the locking operation of the light source 200 on the reflector 100. They are placed so that the passage of a protuberance on a boss is done simultaneously when the fixing tongues 206 are inserted into the holding elements 302. Since the bosses 400 are arranged on the outside face 107 of the bearing surface 105, it is advisable to arrange the protuberances intended to pass over the bosses 400. at the contact zone 208 of the support 202 of the light source 200.
  • the free ends 211 of the flexible blades 209 are used, and even more advantageously, their protuberance 305, as protuberance for locating the bosses 400.
  • the protuberances 305 pass at the bosses 400, the light source 200 no longer undergoes translation movement, along the optical axis, additional during the rotational movement of the locking phase, as was the case in the state of the art.
  • the elastic nature, the flexibility of the free ends 211 of the flexible blades 209 eliminates this additional translational movement: by deforming slightly, the free ends 211, which are sufficiently elastic to return to their initial position after the passage of the bosses 400 , during the passage of the bosses 400, maintain the fixing tongues 206 in an alignment position with respect to the holding elements 302.
  • the free ends 211 supporting the protuberances 305 may, if necessary, rise slightly above the level of the contact zone 208 to ensure the permanent alignment of the fastening tabs 206 and the holding elements 302, even when the protuberances 305 reach the top of the bosses 400.
  • the holding elements 302 are no longer deformed when crossing the bosses, which ensures their sustainable use and, where appropriate, optimal electrical conduction.
  • FIG. figure 5 it is planned to make a set of cavities 500 in the bearing surface 105 of the reflector 100. It is expected to have as many cavities as the light source 200 comprises flexible blades 209, typically three. Each cavity 500 is arranged such that it receives the free end 211 and its optional additional protrusion 305, when the locking tabs 207 end to pass through the clearances 108 during the insertion phase described above. Each cavity 500 therefore precedes a boss 400 in the locking direction.
  • the locking tabs 207 are no longer in contact with the inner face 106 of the bearing surface 105 of the reflector 100; the installer thus has a slight clearance 501 at the beginning of the locking operation that can facilitate the start of this operation.
  • the installer who felt increased the resistance encountered in the locking motion before feeling the inertial effect, knows that the locking operation is complete. It has thus been able simultaneously to benefit from a mounting comfort and a technical guarantee: a certainty as to the definitive positioning of the fastening tabs 206 in the clips 302. This good positioning is particularly important when at least one of the fastening tabs 206 also acts as an electrical connection tab.
  • the invention has therefore developed a "one touch" type mounting system of a lamp in the reflector, where the lamp is held in abutment on the outer face of the reflector during the passage of the lamp. on the boss 301, which makes it possible in particular to avoid deforming the electrical connection piece 302 during the introduction of the electrical connection tabs 206.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

The system is fixed between a light source including a bulb, a support and a locking pad unit, and a reflector that presents an internal face and an exterior face (107). The light source includes protuberances (305) arranged on a contact zone of the support. The reflector includes a projection on its external face and one of the protuberance contacts the projection during operation of locking of light source on the reflector. Independent claims are also included for the following: (a) a light source intervening in a fixing system (b) a reflector intervening in a fixing system (c) a vehicle equipped with a fixing system (d) a process of locking of a light source on a reflector through a fixing system.

Description

La présente invention a pour objet un système de fixation pour lampe à verrouillage. Elle a essentiellement pour but de proposer une solution pour faciliter une fixation fiable des lampes dans les réflecteurs de différents dispositifs projecteurs, et pour que l'opération de fixation n'endommage pas certains éléments subissant des frottements ou des contacts lors de cette opération.The present invention relates to a fixing system for a locking lamp. Its main purpose is to propose a solution to facilitate reliable fixing lamps in the reflectors of different projectors devices, and so that the fixing operation does not damage certain elements undergoing friction or contacts during this operation.

Le domaine de l'invention est, d'une façon générale, celui des projecteurs de véhicule automobile. Dans ce domaine, on connaît différents types de projecteurs, parmi lesquels on trouve essentiellement :

  • des feux de position, d'intensité et de portée faible ;
  • des feux de croisement, ou codes, d'intensité plus forte et de portée sur la route avoisinant 70 mètres, qui sont utilisés essentiellement la nuit et dont la répartition du faisceau lumineux est telle qu'elle permet de ne pas éblouir le conducteur d'un véhicule croisé ;
  • des feux de route longue portée, et des feux de complément de type longue portée, dont la zone de vision sur la route avoisine 200 mètres, et qui doivent être éteints lorsque l'on croise un autre véhicule afin de ne pas éblouir son conducteur ;
  • des feux anti-brouillard.
The field of the invention is, in general, that of motor vehicle headlights. In this field, we know different types of projectors, among which we find essentially:
  • position, intensity and low range lights;
  • low beam, or codes, of greater intensity and range on the road of about 70 meters, which are used mainly at night and whose distribution of the light beam is such that it does not dazzle the driver of a crossover vehicle;
  • long-range headlamps, and long-range supplement lights, whose vision zone on the road is approximately 200 meters, and which must be extinguished when crossing another vehicle so as not to dazzle its driver;
  • fog lights.

Par ailleurs, on connaît certains projecteurs perfectionnés, appelés projecteurs bimodes, qui cumulent les fonctions de feux de croisement et de feux longue portée : à cet effet, on peut notamment disposer à l'intérieur du projecteur bimode une source lumineuse de type DFCS (pour Double Filament adapté aux Surfaces Complexes), qui comporte deux filaments distincts, un premier filament étant dédié à une utilisation de la source lumineuse en tant que feu de croisement, et un second filament étant dédié à une utilisation de la source lumineuse en tant que feu de route.Moreover, we know some advanced projectors, called dual-mode projectors, which combine the functions of dipped headlights and long-range lights: for this purpose, it is possible in particular to have inside the two-mode projector a DFCS type light source (for Double Filament adapted to Complex Surfaces), which comprises two distinct filaments, a first filament being dedicated to a use of the light source as a dipped beam, and a second filament being dedicated to a use of the light source as a light of road.

L'ensemble des dispositifs projecteurs qui viennent d'être mentionnés comprennent au moins une source lumineuse et un réflecteur comportant une surface optique constituée d'un ensemble de surfaces réfléchissantes dont la disposition et l'orientation sont définies de manière à produire un faisceau lumineux particulier. L'opération de fixation de la source lumineuse sur le réflecteur pose un certain nombre de difficultés, qui seront détaillées ultérieurement, lors de l'assemblage du dispositif projecteur, d'autant plus que des opérations de fixation dites "one touch" sont désormais privilégiées pour la fixation des sources lumineuses de type DFCS. Les opérations de fixation dites "one touch", qui peut se traduire par opération de fixation simplifiée, sont des opérations qui consistent à réaliser la fixation de la source lumineuse sur le réflecteur en une opération unique, décomposable en un mouvement de translation, pour introduire l'ampoule de la source lumineuse au travers d'une cavité ménagée au sommet du réflecteur, combiné à un mouvement de rotation, pour effectuer le verrouillage de la source lumineuse sur le réflecteur.All of the projectors that have just been mentioned comprise at least one light source and a reflector comprising an optical surface consisting of a set of reflective surfaces. whose arrangement and orientation are defined so as to produce a particular light beam. The operation of fixing the light source on the reflector poses a number of difficulties, which will be detailed later, during the assembly of the projector device, especially since so-called "one touch" fixing operations are now preferred for fixing DFCS type light sources. The so-called "one touch" fixing operations, which can be translated by a simplified fixing operation, are operations which consist in fixing the light source on the reflector in a single operation, decomposable into a translational movement, to introduce the bulb of the light source through a cavity at the top of the reflector, combined with a rotational movement, to effect the locking of the light source on the reflector.

Le document EP 0 713 998 présente un système de fixation d'une lampe sur le réflecteur.The document EP 0 713 998 has a system for fixing a lamp on the reflector.

Le système de fixation selon l'invention intervient dans le cadre de ces opérations de fixation simplifiées. Bien que ces opérations de fixation simplifiée soient, pour le moment, essentiellement destinées aux sources lumineuses DFCS, le système de fixation selon l'invention n'est pas limité à ces seules sources lumineuses, mais concerne l'ensemble des dispositifs projecteurs précédemment cités, même ceux n'utilisant pas de sources lumineuses DFCS, qui sont susceptibles de recourir à l'opération de fixation simplifiée précédemment mentionnée.The fastening system according to the invention is involved in the context of these simplified fixing operations. Although these simplified fixing operations are, for the moment, essentially intended for DFCS light sources, the fastening system according to the invention is not limited to these light sources only, but concerns all the aforementioned projector devices, even those not using DFCS light sources, which are likely to resort to the previously mentioned simplified fixing operation.

Dans l'état de la technique, on connaît le système de fixation du type de celui illustré aux figures 1, 2 et 3. Dans l'ensemble de la description, les éléments communs à plusieurs figures seront désignés par la même référence:In the state of the art, the fixing system of the type illustrated in FIGS. Figures 1, 2 and 3 . Throughout the description, the elements common to several figures will be designated by the same reference:

Sur les figures 1 et 2, on a représenté en perspective, de façon schématique, un réflecteur 100 sur lequel on vient fixer une source lumineuse 200.On the Figures 1 and 2 schematically, a reflector 100 is shown in perspective on which a light source 200 is fixed.

La source lumineuse 200 comporte essentiellement une ampoule 201, représentée en pointillés, fixée sur un support 202. Le support 202 est, pour sa part, constitué d'une première partie cylindrique 203, sur laquelle est fixée l'ampoule 201 et dont un sommet est centré sur une face inférieure d'une deuxième partie cylindrique 204, elle-même terminée par un moyen de saisie 205 de la source lumineuse 200 qui permet de manipuler cette dernière. La deuxième partie cylindrique 204 est plus large que la première partie cylindrique 203. Elle comporte, sur sa paroi latérale, un ensemble de languettes de fixation 206. Sur la paroi latérale de la première partie cylindrique 203, on a disposé un ensemble de pattes de verrouillage 207. La face inférieure de la deuxième partie cylindrique 204 correspond, au niveau de sa périphérie laissée accessible après la jonction avec la première partie cylindrique 203, à une zone de contact 208 du support 202. Cette zone de contact 208 est destinée à venir en appui sur la face extérieure du réflecteur 100 lorsque la fixation est effectuée.The light source 200 essentially comprises a bulb 201, shown in dashed lines, fixed on a support 202. The support 202 is, for its part, constituted by a first cylindrical portion 203, on which the bulb 201 is fixed and a vertex is centered on a lower face of a second cylindrical portion 204, itself terminated by an input means 205 of the light source 200 which allows to manipulate the latter. The second cylindrical portion 204 is wider than the first portion cylindrical 203. It comprises, on its side wall, a set of fastening tabs 206. On the side wall of the first cylindrical portion 203, there is arranged a set of locking tabs 207. The lower face of the second cylindrical portion 204 corresponds, at its periphery left accessible after the junction with the first cylindrical portion 203, to a contact zone 208 of the support 202. This contact zone 208 is intended to bear on the outer face of the reflector 100 when the attachment is done.

La zone de contact 208 comporte un ensemble de lames flexibles 209. Ces lames flexibles suivent la forme circulaire de la zone de contact 208. Elles ont une première extrémité 210 moulée dans l'épaisseur de la zone de contact 208, et une deuxième extrémité 211, dite extrémité libre, qui dépasse légèrement du plan défini par la zone de contact 208. Leur fonction, dans l'état de la technique, est de mettre la source lumineuse 200 en appui selon un plan de référence perpendiculaire à l'axe optique.The contact zone 208 comprises a set of flexible blades 209. These flexible blades follow the circular shape of the contact zone 208. They have a first end 210 molded into the thickness of the contact zone 208, and a second end 211 , said free end, which slightly exceeds the plane defined by the contact zone 208. Their function, in the state of the art, is to put the light source 200 in a reference plane perpendicular to the optical axis.

Le réflecteur 100 est constitué d'une face externe 101, visible à la figure 1, et d'une face interne 102; le réflecteur 100 ayant fait l'objet, à la figure 2, d'une coupe pour les besoins de la description, la face interne 102 est visible sur cette figure. La face interne 102 est également appelée surface optique du réflecteur: c'est elle qui est chargée de réfléchir les rayons lumineux émis par la source lumineuse 200 quand cette dernière est fixée sur le réflecteur 100 et que l'ampoule 201 rayonne.The reflector 100 consists of an outer face 101, visible at the figure 1 , and an inner face 102; the reflector 100 having been subjected, at the figure 2 , a section for the purposes of the description, the inner face 102 is visible in this figure. The inner face 102 is also called the optical surface of the reflector: it is it which is responsible for reflecting the light rays emitted by the light source 200 when the latter is fixed on the reflector 100 and the bulb 201 radiates.

Le réflecteur 100 comporte une ouverture circulaire 103 ménagée approximativement à son sommet. Typiquement, l'ouverture 103 est disposée au niveau d'une extrémité d'une terminaison 104 du réflecteur 100, ladite terminaison 104 étant de forme cylindrique. On dispose ainsi, autour de l'ouverture 103, d'une surface d'appui 105.The reflector 100 has a circular opening 103 formed approximately at its top. Typically, the opening 103 is disposed at one end of a termination 104 of the reflector 100, said termination 104 being of cylindrical shape. Thus, around the opening 103, there is a bearing surface 105.

La surface d'appui 105 présente une face intérieure 106, appartenant à la face interne 102 du réflecteur 100, et une face extérieure 107 appartenant à la face externe 101 du réflecteur 100. La surface d'appui 105 a approximativement la forme d'un anneau au centre duquel on trouve l'ouverture circulaire 103. L'ouverture circulaire 103 est complétée par des dégagements 108 qui sont destinés à laisser passer les pattes de verrouillage 207 de la source lumineuse 200 dans la terminaison cylindrique 104.The bearing surface 105 has an inner face 106, belonging to the inner face 102 of the reflector 100, and an outer face 107 belonging to the outer face 101 of the reflector 100. The bearing surface 105 has approximately the shape of a ring at the center of which we find the circular opening 103. The circular opening 103 is completed by clearances 108 which are intended to let the locking tabs 207 of the light source 200 into the cylindrical terminal 104.

L'opération de fixation simplifiée de la source lumineuse 200 sur le réflecteur 100 peut se décomposer en deux mouvements distincts : un premier mouvement, dit d'introduction, consiste en une translation selon l'axe optique de la source lumineuse 200 vers le réflecteur 100 de telle sorte que l'ampoule 201 soit introduite dans l'ouverture circulaire 103 du réflecteur 200. La disposition de la source lumineuse lors du mouvement d'introduction est telle que les pattes de verrouillage 207 sont disposées face aux dégagements 108 qui complètent l'ouverture circulaire 103 de telle sorte qu'elles peuvent également être introduites à l'intérieur du réflecteur 100. A la fin de l'étape d'introduction, les lames flexibles 209 sont en contact avec la face externe 107 de la surface d'appui 105. Il est alors nécessaire d'effectuer une très légère pression sur la source lumineuse pour déformer légèrement les lames flexibles 209 afin que les pattes de verrouillage 207 soient totalement entrées dans les dégagements 108.The simplified fixing operation of the light source 200 on the reflector 100 can be broken down into two distinct movements: a first movement, referred to as introduction, consists of a translation along the optical axis of the light source 200 towards the reflector 100 so that the bulb 201 is introduced into the circular opening 103 of the reflector 200. The arrangement of the light source during the insertion movement is such that the locking tabs 207 are arranged facing the clearances 108 which complement the circular opening 103 so that they can also be introduced inside the reflector 100. At the end of the introduction step, the flexible blades 209 are in contact with the outer face 107 of the bearing surface 105. It is then necessary to make a very slight pressure on the light source to slightly deform the flexible blades 209 so that the locking tabs 207 are total entered into the clearances 108.

Les dimensions de la surface d'appui 105 et de la zone de contact 208 sont telles qu'à la fin de l'étape d'introduction, la surface d'appui 105 et la zone de contact 208 semblent former un cylindre unique.The dimensions of the bearing surface 105 and the contact area 208 are such that at the end of the introduction step, the bearing surface 105 and the contact area 208 appear to form a single cylinder.

Une fois le mouvement d'introduction achevé, on peut alors procéder au deuxième mouvement, qui consiste à réaliser le verrouillage de la source lumineuse 200 sur le réflecteur 100. L'étape de verrouillage consiste en un mouvement de rotation, dans un plan défini par la surface d'appui 105, de la source lumineuse 200, par rapport au réflecteur 100. Différentes étapes de ce mouvement sont détaillées en se référant à la figure 3.Once the insertion movement has been completed, the second movement, which consists of locking the light source 200 on the reflector 100, can then proceed. The locking step consists of a rotational movement in a plane defined by the bearing surface 105 of the light source 200 with respect to the reflector 100. Various steps of this movement are detailed with reference to the figure 3 .

Sur cette figure, on a représenté, de façon schématique, une vue en coupe d'une projection linéaire d'une partie de la surface d'appui 105 du réflecteur 100 et des différents éléments intervenant au voisinage direct de la surface d'appui 105 pendant l'étape de verrouillage. Une fois que les pattes de verrouillage 207 ont été introduites au sein du réflecteur 100 par les dégagements 108, elles sont mises en contact, dès l'amorce du mouvement de rotation selon un sens de verrouillage 300, avec la face intérieure 106 de la surface d'appui 105, ceci du fait de la pression des lames flexibles 209, éventuellement par l'intermédiaire de protubérances 305 présentes au niveau de leur extrémité libre 211, sur la face externe 107 de la surface d'appui 105. Les protubérances peuvent par exemple consister en une déformation des extrémités libres 211, par exemple de forme arrondie, pour présenter des sortes de crochets, ou être des protubérances dites complémentaires consistant en de l'ajout de matière sur les extrémités libres 211. La surface d'appui 105 est ainsi pincée entre les pattes de verrouillage 207 et la zone de contact 208 par l'intermédiaire des lames flexibles 209.In this figure, there is shown schematically a sectional view of a linear projection of a portion of the bearing surface 105 of the reflector 100 and the various elements involved in the direct vicinity of the bearing surface 105 during the lock step. Once the locking lugs 207 have been introduced into the reflector 100 by the recesses 108, they are brought into contact, as soon as the rotational movement starts in a locking direction 300, with the inner face 106 of the surface. 105 because of the pressure of the flexible blades 209, possibly via protuberances 305 present at their free end 211, on the outer face 107 of the bearing surface 105. The protuberances can example consist of a deformation of the free ends 211, for example of rounded shape, to present kinds of hooks, or be so-called complementary protuberances consisting of the addition of material on the free ends 211. The bearing surface 105 is thus pinched between the locking tabs 207 and the contact zone 208 by the intermediate of the flexible blades 209.

Une fois le mouvement de verrouillage amorcé, chaque patte de verrouillage 207 évolue sur la face intérieure 106 où elle rencontre un bossage 301 disposé sur cette face interne 106. Chaque patte de verrouillage 207 suit alors la courbe du bossage, ce qui a pour effet de plaquer l'extrémité libre 211 de chaque lame flexible 209 contre la zone de contact 208 de la source lumineuse 200. La représentation de la figure 3 correspond à cet instant précis du verrouillage. Une fois le sommet du bossage 301 passé, la source lumineuse 200 bénéficie d'un effet inertiel pour achever le verrouillage : en effet, du fait de la pression exercée par chaque lame flexible 209, le mouvement de chaque patte de verrouillage 207 est mécaniquement accéléré lorsqu'elle a passé le sommet du bossage 301 qu'elle rencontre. Cette accélération, qui facilite le mouvement de verrouillage initié par un installateur, constitue l'effet inertiel. L'installateur sent ainsi tout d'abord une certaine résistance dans le mouvement de rotation, due à la présence des bossages, puis une accélération de ce mouvement.Once the locking movement has begun, each locking tab 207 moves on the inner face 106 where it meets a boss 301 disposed on this inner face 106. Each locking tab 207 then follows the curve of the boss, which has the effect of press the free end 211 of each flexible blade 209 against the contact zone 208 of the light source 200. The representation of the figure 3 corresponds to this precise moment of the lock. Once the vertex 301 has passed, the light source 200 has an inertial effect to complete the locking: indeed, because of the pressure exerted by each flexible blade 209, the movement of each locking tab 207 is mechanically accelerated when she has passed the top of boss 301 she meets. This acceleration, which facilitates the lock movement initiated by an installer, is the inertial effect. The installer thus feels first of all a certain resistance in the rotational movement, due to the presence of the bosses, then an acceleration of this movement.

La phase d'accélération doit, d'après les normes en vigueur, marquer la fin du mouvement de verrouillage. En conséquence, dans le cas, par exemple, des sources lumineuses DFCS, le passage des pattes de verrouillage 207 sur les bossages 301 s'effectue simultanément à l'insertion de chaque languette de fixation 206 dans un élément de maintien302 correspondant, chaque élément de maintien 302 étant disposé sur la face extérieure 107 de la surface d'appui 105 du réflecteur 100 à une position adéquate pour recevoir la languette de fixation 206 qui lui est destinée. Les éléments de maintien 302 peuvent par exemple être des clips, c'est à dire des organes élastiques qui, par déformation à l'accouplement, permettent la réalisation d'une liaison mécanique ou, dans certains cas, d'une liaison électrique.The acceleration phase must, according to the standards in force, mark the end of the locking movement. Consequently, in the case of, for example, DFCS light sources, the passage of the locking lugs 207 on the bosses 301 is carried out simultaneously with the insertion of each fastening tab 206 into a corresponding holding element 302, each element of maintaining 302 being disposed on the outer face 107 of the bearing surface 105 of the reflector 100 at a position suitable for receiving the fastening tab 206 which is intended for it. The holding elements 302 may for example be clips, that is to say elastic members which, by deformation at the coupling, allow the realization of a mechanical connection or, in some cases, an electrical connection.

A la fin du mouvement de verrouillage, assuré par l'effet inertiel, chaque languette de fixation 206 est insérée dans le clip 302 qui lui est destiné ; simultanément, chaque patte de verrouillage 207 rencontre une butée 304, disposée à une position adéquate sur la face intérieure 106 de la surface d'appui 105 pour que chaque patte de verrouillage 207 soit en contact avec une butée, qui lui est spécifiquement destinée, lorsque la position de verrouillage est atteinte. Par ailleurs, lorsque la position de verrouillage est atteinte, les extrémités libres 211 des lames flexibles 209 ne sont plus en appui sur la zone de contact 208. Leur fonction est de maintenir la source lumineuse 200 en appui selon un plan de référence, défini par la surface d'appui 105 et perpendiculaire à l'axe optique.At the end of the locking movement, ensured by the inertial effect, each fixing tongue 206 is inserted into the clip 302 which is intended for it; simultaneously, each locking tab 207 encounters a stop 304, disposed at a suitable position on the inner face 106 of the bearing surface 105 so that each locking tab 207 is in contact with a stop, which is specifically intended for it, when the locking position is reached. Moreover, when the locking position is reached, the free ends 211 of the flexible blades 209 are no longer resting on the contact zone 208. Their function is to keep the light source 200 in abutment according to a reference plane defined by the bearing surface 105 and perpendicular to the optical axis.

Outre l'effet inertiel qu'ils procurent, les bossages 301 assurent un effet anti-retour qui bloque la source lumineuse 200 dans la position de verrouillage en empêchant qu'un mouvement de rotation dans une direction antagoniste à la direction de verrouillage 300 puisse être effectué sans une contribution extérieure significative.In addition to the inertial effect they provide, the bosses 301 provide a non-return effect which blocks the light source 200 in the locking position by preventing a rotational movement in a direction opposite to the locking direction 300 can be carried out without a significant external contribution.

Lorsque l'on souhaite assurer la connexion électrique de la source lumineuse 200 simultanément à l'opération de verrouillage, au moins une des languettes de fixation 206 est électriquement conductrice, et le clip qui lui est associé est disposé dans un connecteur 303 qui reçoit par ailleurs une alimentation électrique. Dans l'exemple décrit, les éléments suivants - les butées 304, les bossages 301, les dégagements 108, les lames flexibles 209, les languettes de fixation 206 et les pattes de verrouillage 207 - sont répartis en trois ensembles d'éléments de fixation, chaque ensemble d'éléments comportant un de ces éléments, lesdits éléments étant disposés de telle sorte qu'ils peuvent coopérer pour réaliser un système de fixation fonctionnant selon le mécanisme qui vient d'être décrit. La répartition des ensembles d'éléments est telle que les différents éléments sont régulièrement espacés sur la périphérie des pièces qui les supportent. Dans d'autres exemples de réalisation, on prévoit de disposer un, deux, quatre - ou plus- ensembles d'éléments de fixation.When it is desired to ensure the electrical connection of the light source 200 simultaneously with the locking operation, at least one of the fixing tabs 206 is electrically conductive, and the clip associated therewith is arranged in a connector 303 which receives by elsewhere a power supply. In the example described, the following elements - the stops 304, the bosses 301, the clearances 108, the flexible blades 209, the fastening tabs 206 and the locking tabs 207 - are distributed in three sets of fasteners, each set of elements comprising one of these elements, said elements being arranged in such a way that they can cooperate to produce a fastening system operating according to the mechanism which has just been described. The distribution of the sets of elements is such that the various elements are evenly spaced on the periphery of the parts that support them. In other exemplary embodiments, provision is made to have one, two, four or more sets of fasteners.

Un premier problème rencontré avec ce type de système de fixation est que la présence des bossages 301 sur la face interne 102 du réflecteur 100 présente plusieurs inconvénients :A first problem encountered with this type of fastening system is that the presence of the bosses 301 on the inner face 102 of the reflector 100 has several disadvantages:

Tout d'abord, la face interne 102 du réflecteur est destinée à être recouverte au moins par un vernis ; lors du passage des pattes de verrouillage 207, qui ne sont pas déformables, sur les bossages 301, on risque d'arracher des particules de vernis, des particules de revêtement en aluminium ou même des particules de la matière constituant le réflecteur. Ce dernier peut être composé d'une matière métallique, par exemple l'aluminium, ou de polymères thermodurcissables ou thermoplastiques. Les particules arrachées polluent alors l'intérieur du réflecteur 100 et perturbent l'intégrité de la surface optique.First, the inner face 102 of the reflector is intended to be covered at least by a varnish; during the passage of the locking tabs 207, which are not deformable, on the bosses 301, there is a risk of tearing off the particles of varnish, coating particles in aluminum or even particles of the material constituting the reflector. The latter may be composed of a metallic material, for example aluminum, or thermosetting or thermoplastic polymers. The torn particles then pollute the interior of the reflector 100 and disturb the integrity of the optical surface.

Ensuite, l'ajout de vernis sur les bossages 301 modifie le relief des bossages 301: leur hauteur maximale risque d'être sensiblement augmentée, et leurs pentes risquent d'être atténuées, diminuant ainsi la résistance sentie par l'installateur et l'effet inertiel qu'ils procurent.Then, the addition of varnish on the bosses 301 modifies the relief of the bosses 301: their maximum height may be substantially increased, and their slopes may be attenuated, thus reducing the resistance felt by the installer and the effect inertial they provide.

Un deuxième problème rencontré avec le type de système de fixation décrit est que le mouvement d'insertion de la source lumineuse 200 dans le réflecteur 100, qui est un mouvement de translation selon l'axe optique, est perturbé par un mouvement antagoniste allant dans la direction opposée de la direction d'insertion lorsque les pattes de verrouillage 207 sont entraînées par l'effet inertiel après avoir franchi le sommet des bossages 301. Outre le fait que ce mouvement dans une direction opposée à la direction d'insertion peut être surprenant pour l'utilisateur, il témoigne surtout du fait que lors du franchissement des bossages 301, les languettes de fixation 206 ont subi un mouvement qui les a fait quitter leur position d'alignement par rapport aux clips dans lesquels elles doivent être insérées. En d'autres termes, le mouvement de translation de l'opération d'insertion est suivi d'un mouvement de rotation au cours duquel on observe un mouvement parasite de translation par rapport à l'axe d'insertion des clips 302 et des languettes de fixation associées 206.A second problem encountered with the type of fixing system described is that the insertion movement of the light source 200 into the reflector 100, which is a translation movement along the optical axis, is disturbed by an opposing movement going into the opposite direction of the insertion direction when the locking tabs 207 are driven by the inertial effect after having crossed the top of the bosses 301. In addition to the fact that this movement in a direction opposite to the direction of insertion can be surprising for the user, it testifies above all that when crossing the bosses 301, the fixing tabs 206 have undergone a movement that made them leave their alignment position relative to the clips in which they must be inserted. In other words, the translational movement of the insertion operation is followed by a rotational movement during which there is a parasitic translational movement with respect to the axis of insertion of the clips 302 and the tongues. associated fasteners 206.

Or les normes prévoient que la jonction clip-languette de fixation s'effectue simultanément au franchissement des bossages 301, de façon à faire bénéficier l'engagement des languettes de fixation 206 dans les clips 302 de l'effet inertiel. C'est donc précisément au moment où les pattes de verrouillage 207 entament le passage des bossages 301 que les languettes de fixation 206 quittent leur position d'alignement par rapport aux clips 302, déformant ainsi ces clips 302 dans lesquels elles ont commencé à entrer. Même si les clips 302 sont dimensionnés pour absorber cette variation, la présence de vernis, ou l'érosion de ce vernis, sur les bossages amplifie le mouvement antagoniste pouvant provoquer des cas extrêmes dans lesquels les clips 302 sont endommagés. Cet endommagement est d'autant plus gênant dans les cas ou les clips font partie d'un connecteur électrique 303, la conduction électrique risquant alors de présenter des défaillances, par exemple des pertes de contact électrique, au niveau des clips 302.However, the standards provide that the fastening clip-tongue connection is performed simultaneously to the crossing of the bosses 301, so as to benefit from the engagement of the fastening tabs 206 in the clips 302 of the inertial effect. It is therefore precisely at the moment when the locking lugs 207 start the passage of the bosses 301 that the fixing tabs 206 leave their alignment position with respect to the clips 302, thus deforming these clips 302 in which they have begun to enter. Even if the clips 302 are sized to absorb this variation, the presence of varnish, or the erosion of this varnish, on the bosses amplifies the antagonistic movement that can cause extreme cases in which the clips 302 are damaged. This damage is all the more annoying in cases where the clips are part of an electrical connector 303, electrical conduction may then run to fail, for example loss of electrical contact, at the clips 302.

Enfin, du fait de la présence de vernis qui modifie le relief des bossages 301, la qualité de ces bossages 301 en tant que dispositif anti-retour n'est pas optimale, et la connexion électrique, lorsqu'elle existe, entre les languettes de fixation 206 et les connecteurs électriques 303 n'est pas sécurisée.Finally, because of the presence of varnish that modifies the relief of the bosses 301, the quality of these bosses 301 as a non-return device is not optimal, and the electrical connection, when it exists, between the tabs of attachment 206 and electrical connectors 303 is not secure.

C'est un objet de l'invention de répondre à l'ensemble des problèmes qui viennent d'être mentionnés. Dans l'invention, on propose un système de fixation faisant intervenir au moins un bossage, pour provoquer un effet inertiel dans une phase de verrouillage et pour assurer un effet anti-retour, qui n'est plus disposé sur une face interne d'un réflecteur. Dans l'invention, des bossages sont désormais placés sur la face externe des réflecteurs, dans des positions appropriées pour que leur franchissement par des éléments protubérants de la source lumineuse continue à marquer la fin d'une opération de verrouillage d'une source lumineuse sur un réflecteur. On évite ainsi les inconvénients de l'état de la technique liés à la présence de vernis sur les bossages, ou les inconvénients liés à l'arrachage de particules de matière du réflecteur ou des particules de revêtement d'aluminium.It is an object of the invention to respond to all the problems just mentioned. In the invention, there is provided a fixing system involving at least one boss, to cause an inertial effect in a locking phase and to provide a non-return effect, which is no longer arranged on an internal face of a reflector. In the invention, bosses are now placed on the outer face of the reflectors, in appropriate positions so that their crossing by protruding elements of the light source continues to mark the end of a locking operation of a light source on a reflector. This avoids the drawbacks of the state of the art related to the presence of varnish on the bosses, or the drawbacks associated with the tearing of material particles from the reflector or aluminum coating particles.

Par ailleurs, dans un mode de réalisation particulier de l'invention, on propose d'utiliser des lames flexibles, présentes sur la zone de contact des sources lumineuses, comme éléments protubérants passant sur les bossages lors de l'opération de verrouillage, ce qui permet d'atténuer fortement, voire d'éliminer, le mouvement parasite qui fait quitter, dans l'état de la technique, les languettes de fixation de leur position d'alignement face aux clips dans lesquels elles doivent être insérées. Outre la fonction de mise en appui de la source lumineuse selon un plan de référence perpendiculaire à l'axe optique, les lames flexibles ont alors également une fonction de détecteur de fin d'opération de verrouillage.Furthermore, in a particular embodiment of the invention, it is proposed to use flexible blades, present on the contact area of the light sources, as protruding elements passing over the bosses during the locking operation, which greatly alleviates or even eliminates the parasitic movement that leaves, in the state of the art, the fixing tabs of their alignment position facing the clips in which they must be inserted. In addition to the function of supporting the light source according to a reference plane perpendicular to the optical axis, the flexible blades also have a function of locking end of operation detector.

Le système de fixation selon l'invention permet donc de s'affranchir d'un mouvement de translation parasite évoqué plus haut, notamment par le transfert des bossages disposés dans l'état de la technique sur la surface optique du réflecteur vers la surface non optique du réflecteur. En outre, c'est avantageusement une patte flexible qui coopère avec le bossage. Enfin, la présence de cavité(s) au niveau de la source lumineuse permet à cette(ce)s patte(s) flexible(s) de fléchir à l'intérieur de cette(ces) cavité(s) sans entraîner de mouvement perturbateur de la source lumineuse.The fastening system according to the invention therefore makes it possible to dispense with a parasitic translation movement mentioned above, in particular by the transfer of the bosses arranged in the state of the art on the optical surface of the reflector towards the non-optical surface. reflector. In addition, it is advantageously a flexible tab that cooperates with the boss. Finally, the presence of cavity (s) at the light source allows this (this) flexible tab (s) to bend inside this (these) cavity (s) without causing disruptive movement of the light source.

L'invention concerne donc principalement un système de fixation, dans un dispositif d'éclairage et/ou de signalisation automobile de type projecteur, entre une source lumineuse, comportant notamment une ampoule, un support, et un ensemble de pattes de verrouillage, et un réflecteur, présentant une face interne et une face externe, ledit réflecteur comportant une ouverture à proximité de laquelle la source lumineuse pince le réflecteur entre les pattes de verrouillage, en contact avec la face interne, et une zone de contact du support, en regard de la face externe du réflecteur, caractérisé en ce que la source lumineuse comporte au moins un élément protubérant disposé sur la zone de contact du support et en ce que le réflecteur comporte au moins un bossage sur sa face externe pour repérer le passage d'un des éléments protubérants de l'ensemble d'éléments protubérants lors d'une opération de verrouillage de la source lumineuse sur le réflecteur.The invention therefore mainly relates to a fixing system, in a lighting device and / or automotive signaling projector type, between a light source, comprising in particular a bulb, a support, and a set of locking tabs, and a reflector, having an inner face and an outer face, said reflector having an opening near which the light source clamps the reflector between the locking tabs, in contact with the inner face, and a contact zone of the support, opposite the external face of the reflector, characterized in that the light source comprises at least one protruding element disposed on the contact zone of the support and in that the reflector comprises at least one boss on its outer face to identify the passage of one of the protruding elements of the set of protruding elements during a locking operation of the light source on the reflector.

L'invention consiste ainsi à ce qu'au moins un de ces éléments protubérants entrant en contact, notamment momentanément, avec ledit bossage pendant l'opération de verrouillage de la source lumineuse sur le réflecteur. Avantageusement, le système de fixation selon l'invention assure à la fois le verrouillage mécanique de la source lumineuse au réflecteur et la connexion électrique de la dite source : c'est un montage de lampe connue sous le terme anglais de montage de lampe « one touch », où une seule opération assure le montage électrique et mécanique de la lampe.The invention thus consists in that at least one of these protruding elements coming into contact, in particular momentarily, with said boss during the operation of locking the light source on the reflector. Advantageously, the fastening system according to the invention ensures both the mechanical locking of the light source to the reflector and the electrical connection of the said source: it is a lamp assembly known as the English lamp assembly "one touch ", where a single operation ensures the electrical and mechanical assembly of the lamp.

Le système de fixation selon l'invention peut, outre les caractéristiques principales qui viennent d'être mentionnées, présenter une ou plusieurs des caractéristiques secondaires suivantes :

  • le réflecteur comporte, sur sa face externe, autant de bossages que la source lumineuse comporte d'éléments protubérants sur la zone de contact de son support, les différents éléments protubérants passant simultanément sur les bossages lors de l'opération de verrouillage de la source lumineuse sur le réflecteur.
  • les éléments protubérants sont disposés sur des lames flexibles, notamment sur leur extrémité libre.
  • le passage, sur les bossages, de l'élément protubérant disposé sur la zone de contact du support de la source lumineuse procure un effet inertiel à un mouvement de rotation, effectué lors de l'opération de verrouillage de la source lumineuse sur le réflecteur, ledit effet inertiel contribuant à l'engagement d'au moins une languette de fixation, disposée sur une face latérale du support de la source lumineuse, dans un élément de maintien qui lui est associé et qui est disposé sur la face externe du réflecteur.
  • au moins une des languettes de fixation disposées sur la face latérale du support est une languette de connexion électrique de la source lumineuse. Il est en effet avantageux que les languettes de fixation jouent également le rôle de languettes de connexion électrique : le verrouillage mécanique de la lampe peut ainsi s'effectuer simultanément avec la connexion électrique de cette dernière.
  • la fin du passage des éléments protubérants sur les bossages marque la fin de l'opération de verrouillage de la source lumineuse sur le réflecteur.
  • le réflecteur comporte le réflecteur comporte au moins une butée disposée sur sa face interne, chaque patte de verrouillage de la source lumineuse étant en appui contre une desdites butées à la fin du passage des éléments protubérants sur les bossages.
  • le support de la source lumineuse comporte au moins une cavité, notamment autant de cavités que la zone de contact du support de la source lumineuse comprend de lames flexibles, chaque cavité étant disposée en regard de l'extrémité libre de chaque lame flexible.
  • chaque cavité a une dimension permettant un écart, un fléchissement dans ladite cavité, de l'extrémité libre de la lame flexible au regard de laquelle elle est disposée, notamment une profondeur comprise entre 0,5 millimètre et 2 millimètres.
  • la source lumineuse comporte, régulièrement espacés, trois pattes de verrouillage, trois éléments protubérants et trois languettes de fixation, et en ce que le réflecteur comporte, régulièrement espacés, trois bossages, trois éléments de maintien et trois butées.
  • les bossages ont une épaisseur comprise entre 0.2 millimètre et 1.5 millimètre. Leur forme peut être arrondie ou présenter au moins un décrochement de surface ; l'épaisseur d'un bossage correspond à la hauteur maximale dudit bossage par rapport à la zone de contact sur laquelle il est disposé.
  • au moins un bossage est précédé, dans le sens d'un mouvement effectué lors de l'opération de verrouillage, d'une cavité ménagée dans la face externe du réflecteur.
  • les bossages et les cavités qui les précèdent définissent respectivement une première surface de résistance et une deuxième surface de résistance que rencontre chaque élément protubérant lors d'une opération de verrouillage, la pente de la première surface de résistance étant plus importante que la pente de la deuxième surface de résistance.
The fastening system according to the invention may, in addition to the main characteristics which have just been mentioned, have one or more of the following secondary characteristics:
  • the reflector comprises, on its outer face, as many bosses as the light source comprises protruding elements on the zone of contact of its support, the various protruding elements passing simultaneously on the bosses during the locking operation of the light source on the reflector.
  • the protuberant elements are arranged on flexible blades, in particular on their free end.
  • the passage, on the bosses, of the protruding element disposed on the contact zone of the support of the light source provides an inertial effect to a rotational movement, performed during the locking operation of the light source on the reflector, said inertial effect contributing to the engagement of at least one fixing tongue, disposed on a side face of the light source support, in a holding element associated therewith and which is disposed on the outer face of the reflector.
  • at least one of the fixing tabs disposed on the lateral face of the support is an electrical connection tab of the light source. It is in fact advantageous that the fixing tongues also act as electrical connection tongues: the mechanical locking of the lamp can thus be carried out simultaneously with the electrical connection of the latter.
  • the end of the passage of the protruding elements on the bosses marks the end of the locking operation of the light source on the reflector.
  • the reflector comprises the reflector comprises at least one stop disposed on its inner face, each locking tab of the light source being in abutment against one of said stops at the end of the passage of the protruding elements on the bosses.
  • the support of the light source comprises at least one cavity, in particular as many cavities as the contact area of the support of the light source comprises flexible blades, each cavity being disposed facing the free end of each flexible blade.
  • each cavity has a dimension allowing a gap, a deflection in said cavity, of the free end of the flexible blade in relation to which it is disposed, in particular a depth of between 0.5 millimeters and 2 millimeters.
  • the light source comprises, regularly spaced, three legs three protruding elements and three fixing tongues, and in that the reflector comprises, regularly spaced, three bosses, three holding elements and three stops.
  • the bosses have a thickness of between 0.2 millimeters and 1.5 millimeters. Their shape may be rounded or have at least one surface recess; the thickness of a boss corresponds to the maximum height of said boss relative to the contact zone on which it is arranged.
  • at least one boss is preceded, in the direction of a movement performed during the locking operation, of a cavity formed in the outer face of the reflector.
  • the bosses and the cavities which precede them respectively define a first resistance surface and a second resistance surface that each protruding element encounters during a locking operation, the slope of the first resistance surface being greater than the slope of the second resistance surface.

Un autre objet de l'invention est un véhicule automobile équipé d'un dispositif projecteur utilisant le système de fixation présentant l'une des caractéristiques qui viennent d'être mentionnées.Another object of the invention is a motor vehicle equipped with a projector device using the fastening system having one of the features just mentioned.

Un autre objet de la présente invention est une source lumineuse, par exemple de type DFCS, ou H4 ou H11 :

  • dont le support comporte un ensemble de cavités, chaque cavité étant disposée sous une extrémité libre de chaque lame flexible intervenant dans le système de fixation selon l'invention ;
  • et qui peut présenter l'une des caractéristiques qui viennent d'être mentionnées se rapportant à une source lumineuse intervenant dans le système de fixation selon l'invention.
Another object of the present invention is a light source, for example of the DFCS type, or H4 or H11:
  • whose support comprises a set of cavities, each cavity being disposed under a free end of each flexible blade involved in the fastening system according to the invention;
  • and which may have one of the characteristics that have just been mentioned relating to a light source involved in the fastening system according to the invention.

Les lampes DFCS sont connues pour présenter trois languettes de connexion électrique radiales, réparties sur le pourtour de la lampe, les lampes H11 ont un filament et seulement deux languettes radiales l'une étant parallèle/superposée à l'autre.DFCS lamps are known to have three radial electrical connection tabs, distributed around the lamp surround, the H11 lamps have a filament and only two radial tabs one being parallel / superimposed on the other.

Ces lampes peuvent en outre présenter au moins une cavité, apte à coopérer avec/recevoir tout ou partie d'un élément protubérant selon l'invention.These lamps may also have at least one cavity capable of cooperating with / receiving all or part of a protruding element according to the invention.

Un autre objet de la présente invention est un réflecteur intervenant dans le système de fixation présentant l'une des caractéristiques qui viennent d'être mentionnées.Another object of the present invention is an intervening reflector in the fastening system having any of the features just mentioned.

Un autre objet de l'invention est un procédé de verrouillage d'une source lumineuse sur un réflecteur, au moyen d'un système de fixation présentant l'une au moins des caractéristiques qui viennent d'être mentionnées, et où un verrouillage mécanique de la source lumineuse sur le réflecteur est réalisé simultanément à une connexion électrique de la source lumineuse.Another object of the invention is a method of locking a light source on a reflector, by means of a fastening system having at least one of the characteristics which have just been mentioned, and where a mechanical locking of the light source on the reflector is made simultaneously with an electrical connection of the light source.

L'invention et ses différentes applications seront mieux comprises à la lecture de la description qui suit et à l'examen des figures qui l'accompagnent. Celles-ci ne sont présentées qu'à titre indicatif et nullement limitatif de l'invention. Les figures montrent :

  • à la figure 1, déjà décrite, une première représentation schématique d'un réflecteur sur lequel on vient fixer une source lumineuse ;
  • à la figure 2, également déjà décrite, deuxième représentation schématique d'un réflecteur sur lequel on vient fixer une source lumineuse ;
  • à la figure 3, également déjà décrite, une représentation schématique d'un système de fixation d'une source lumineuse sur un réflecteur connu de l'état de la technique ;
  • à la figure 4, une représentation schématique d'un système de fixation d'une source lumineuse sur un réflecteur selon l'invention ;
  • à la figure 5, une représentation schématique d'un exemple de réalisation particulier d'un système de fixation selon l'invention
  • à la figure 6, une représentation partielle en perspective du support de la zone de contact de la source lumineuse fixée sur la surface d'appui du réflecteur.
The invention and its various applications will be better understood by reading the following description and examining the figures that accompany it. These are presented only as an indication and in no way limitative of the invention. The figures show:
  • to the figure 1 , already described, a first schematic representation of a reflector on which is fixed a light source;
  • to the figure 2 , also already described, second schematic representation of a reflector on which is fixed a light source;
  • to the figure 3 , also already described, a schematic representation of a system for fixing a light source on a reflector known from the state of the art;
  • to the figure 4 , a schematic representation of a system for fixing a light source on a reflector according to the invention;
  • to the figure 5 , a schematic representation of a particular embodiment of a fastening system according to the invention
  • to the figure 6 , a partial representation in perspective of the support of the contact zone of the light source fixed on the bearing surface of the reflector.

La figure 4 montre un exemple de réalisation du système de fixation selon l'invention. Une grande partie des éléments présents à la figure 3 se retrouvent sur la figure 4. Ces éléments conservent la même fonction que dans l'état de la technique décrit. Les différences par rapport à la représentation de la figure 3, correspondant à l'état de la technique, sont les suivantes :The figure 4 shows an exemplary embodiment of the fastening system according to the invention. A large part of the elements present at the figure 3 find themselves on the figure 4 . These elements retain the same function as in the state of the art described. Differences from the representation of the figure 3 , corresponding to the state of the art, are as follows:

D'une façon générale, dans l'invention, on a remplacé les bossages 301 disposés, dans l'état de la technique, sur la face intérieure 106 de la surface d'appui 105 du réflecteur 100, par au moins un bossage 400 qui est disposé sur la face extérieure 107 de la surface d'appui 105. Dans un exemple particulier de réalisation, on dispose trois bossages, régulièrement espacés sur la surface d'appui 105. Les bossages ne sont ainsi plus disposés sur la partie optique du réflecteur ; ils ne sont donc pas recouverts de vernis, ou de revêtement d'aluminage, et ne présentent en conséquence pas les différents inconvénients précédemment exposés.In a general manner, in the invention, the bosses 301 disposed, in the state of the art, have been replaced on the inner face 106 of the bearing surface 105 of the reflector 100, by at least one boss 400 which is disposed on the outer face 107 of the bearing surface 105. In a particular embodiment, there are three bosses, evenly spaced on the bearing surface 105. The bosses are no longer disposed on the optical portion of the reflector; they are therefore not covered with varnish, or aluminizing coating, and therefore do not have the various disadvantages previously described.

Les bossages 400 permettent à un installateur de se rendre compte de la fin de l'opération de verrouillage de la source lumineuse 200 sur le réflecteur 100. Ils sont donc placés de telle sorte que le passage d'une protubérance sur un bossage se fasse simultanément à l'introduction des languettes de fixation 206 dans les éléments de maintien 302. Les bossages 400 étant disposés sur la face extérieure 107 de la surface d'appui 105, il est judicieux de disposer les protubérances, destinées à passer sur les bossages 400, au niveau de la zone de contact 208 du support 202 de la source lumineuse 200.The bosses 400 allow an installer to realize the end of the locking operation of the light source 200 on the reflector 100. They are placed so that the passage of a protuberance on a boss is done simultaneously when the fixing tongues 206 are inserted into the holding elements 302. Since the bosses 400 are arranged on the outside face 107 of the bearing surface 105, it is advisable to arrange the protuberances intended to pass over the bosses 400. at the contact zone 208 of the support 202 of the light source 200.

Avantageusement, dans l'invention, on utilise les extrémités libres 211 des lames flexibles 209, et, encore plus avantageusement, leur protubérance 305, comme protubérance servant à repérer les bossages 400. Ainsi, lorsque les protubérances 305 passent au niveau des bossages 400, la source lumineuse 200 ne subit plus de mouvement de translation, selon l'axe optique, supplémentaire pendant le mouvement de rotation de la phase de verrouillage, comme c'était le cas dans l'état de la technique. En effet, le caractère élastique, la souplesse des extrémités libres 211 des lames flexibles 209 élimine ce mouvement de translation supplémentaire : en se déformant légèrement, les extrémités libres 211, qui sont suffisamment élastiques pour revenir dans leur position initiale après le passage des bossages 400, assurent, pendant le passage des bossages 400, le maintien des languettes de fixation 206 dans une position d'alignement par rapport aux éléments de maintien 302.Advantageously, in the invention, the free ends 211 of the flexible blades 209 are used, and even more advantageously, their protuberance 305, as protuberance for locating the bosses 400. Thus, when the protuberances 305 pass at the bosses 400, the light source 200 no longer undergoes translation movement, along the optical axis, additional during the rotational movement of the locking phase, as was the case in the state of the art. Indeed, the elastic nature, the flexibility of the free ends 211 of the flexible blades 209 eliminates this additional translational movement: by deforming slightly, the free ends 211, which are sufficiently elastic to return to their initial position after the passage of the bosses 400 , during the passage of the bosses 400, maintain the fixing tongues 206 in an alignment position with respect to the holding elements 302.

Dans un mode de réalisation particulier, on prévoit de réaliser des cavités 401 dans la zone de contact 208 et au niveau de chaque extrémité libre 211. Ainsi, les extrémités libres 211 supportant les protubérances 305 peuvent, si nécessaire, remonter légèrement au-dessus du niveau de la zone de contact 208 pour garantir l'alignement permanent des languettes de fixation 206 et des éléments de maintien 302, même quand les protubérances 305 atteignent le sommet des bossages 400. Les éléments de maintien 302 ne sont ainsi plus déformés lors du franchissement des bossages, ce qui permet de leur garantir une utilisation durable et, le cas échéant, une conduction électrique optimale.In a particular embodiment, provision is made to make cavities 401 in the contact zone 208 and at each free end 211. Thus, the free ends 211 supporting the protuberances 305 may, if necessary, rise slightly above the level of the contact zone 208 to ensure the permanent alignment of the fastening tabs 206 and the holding elements 302, even when the protuberances 305 reach the top of the bosses 400. The holding elements 302 are no longer deformed when crossing the bosses, which ensures their sustainable use and, where appropriate, optimal electrical conduction.

Dans un exemple de réalisation de l'invention, illustré à la figure 5, on prévoit de réaliser dans la surface d'appui 105 du réflecteur 100 un ensemble de cavités 500. On prévoit de disposer autant de cavités que la source lumineuse 200 comporte de lames flexibles 209, typiquement trois. Chaque cavité 500 est disposée de telle sorte qu'elle reçoit l'extrémité libre 211 et son éventuelle protubérance complémentaire 305, lorsque les pattes de verrouillage 207 finissent de passer au travers des dégagements 108 lors de la phase d'insertion précédemment décrite. Chaque cavité 500 précède donc un bossage 400 dans le sens du verrouillage. Grâce à la présence des cavités 500, lorsque la phase de verrouillage est entamée, les pattes de verrouillage 207 ne sont plus en contact avec la face intérieure 106 de la surface d'appui 105 du réflecteur 100 ; l'installateur dispose ainsi d'un léger jeu 501 en début d'opération de verrouillage qui peut faciliter l'amorce de cette opération.In an exemplary embodiment of the invention, illustrated in FIG. figure 5 it is planned to make a set of cavities 500 in the bearing surface 105 of the reflector 100. It is expected to have as many cavities as the light source 200 comprises flexible blades 209, typically three. Each cavity 500 is arranged such that it receives the free end 211 and its optional additional protrusion 305, when the locking tabs 207 end to pass through the clearances 108 during the insertion phase described above. Each cavity 500 therefore precedes a boss 400 in the locking direction. Due to the presence of the cavities 500, when the locking phase is started, the locking tabs 207 are no longer in contact with the inner face 106 of the bearing surface 105 of the reflector 100; the installer thus has a slight clearance 501 at the beginning of the locking operation that can facilitate the start of this operation.

Dans un exemple particulier, chaque cavité 500 présente une pente, dite pente de sortie 502, qui est moins raide qu'une pente 503, dite pente de début de bossage, qui caractérise chaque bossage 400. Dans l'exemple illustré à la figure 5, une fois l'opération d'insertion achevée, l'opération de verrouillage se déroule comme suit :

  • dans un premier temps, la protubérance 305 suit la courbe définie par la pente de sortie 502. Les pattes de fixation 207 sont ainsi progressivement ramenées en contact avec la face intérieure 106 de la surface d'appui 105, puis les lames flexibles 209 sont mises progressivement en contrainte, au niveau des protubérances 305, sur la surface présentant la pente de sortie 502, accumulant ainsi de l'énergie potentielle ;
  • dans un deuxième temps, les pattes de verrouillage 207 étant arrivées en contact de la face intérieure 106, la protubérance 305 entame le passage du bossage 400 ; chaque languette de fixation 206 a commencé à s'insérer dans un élément de maintien 302. L'extrémité libre 211 sur laquelle se trouve la protubérance 305 continue à se déformer pour suivre la pente de début de bossage 503, et continue ainsi à accumuler de l'énergie potentielle ; l'extrémité libre 211 peut éventuellement entrer dans la cavité 401 lorsqu'elle arrive au sommet du bossage 400 pour éviter toute déformation des éléments de maintien 302 ;
  • dans un dernier temps, la protubérance 305 achève le passage du bossage 400 en bénéficiant de l'effet inertiel, pour arriver dans une position illustrée à la figure 6. L'effet inertiel est provoqué par la libération de l'énergie potentielle emmagasinée par les lames flexibles 209 au cours des deux étapes précédentes. Les languettes de fixation 206 sont ainsi correctement insérées dans les éléments de maintien 302. Au moins une des pattes de verrouillage 207 est alors en appui sur une des butées 304. Dans un exemple particulier, toutes les pattes de verrouillage 207 sont en appui contre la butée 304 qui leur est associée. L'effet anti-retour est assuré par une pente, dite pente de fin de bossage 504, au moins aussi raide que la pente de début de bossage 503.
In a particular example, each cavity 500 has a slope, called the exit slope 502, which is less steep than a slope 503, called the boss start slope, which characterizes each boss 400. In the example illustrated in FIG. figure 5 after the insert operation is completed, the lock operation proceeds as follows:
  • firstly, the protuberance 305 follows the curve defined by the exit slope 502. The fastening tabs 207 are thus progressively brought back into contact with the inner face 106 of the bearing surface 105, and then the flexible blades 209 are placed progressively constrained, at the level of the protuberances 305, on the surface having the exit slope 502, thus accumulating potential energy;
  • in a second step, the locking lugs 207 having come into contact with the inner face 106, the protrusion 305 starts the passage of the boss 400; each fixing tongue 206 has begun to fit into a holding element 302. The free end 211 on which the protuberance 305 is located continues to deform to follow the slope boss beginning 503, and thus continues to accumulate potential energy; the free end 211 may optionally enter the cavity 401 when it reaches the top of the boss 400 to avoid any deformation of the holding elements 302;
  • in a last step, the protrusion 305 completes the passage of the boss 400 while benefiting from the inertial effect, to arrive in a position illustrated in FIG. figure 6 . The inertial effect is caused by the release of the potential energy stored by the flexible blades 209 during the two previous steps. The fastening tabs 206 are thus correctly inserted in the holding elements 302. At least one of the locking tabs 207 is then resting on one of the abutments 304. In one particular example, all the locking tabs 207 bear against each other. stop 304 associated with them. The anti-return effect is provided by a slope, so-called end slope boss 504, at least as steep as the boss start slope 503.

L'installateur, qui a senti augmenté la résistance rencontrée dans le mouvement de verrouillage avant de sentir l'effet inertiel, sait que l'opération de verrouillage est achevée. Il a ainsi pu bénéficier simultanément d'un confort de montage et d'une garantie technique : une certitude quant au bon positionnement définitif des languettes de fixation 206 dans les clips 302. Ce bon positionnement est particulièrement important quand au moins une des languettes de fixation 206 joue également le rôle de languette de connexion électrique.The installer, who felt increased the resistance encountered in the locking motion before feeling the inertial effect, knows that the locking operation is complete. It has thus been able simultaneously to benefit from a mounting comfort and a technical guarantee: a certainty as to the definitive positioning of the fastening tabs 206 in the clips 302. This good positioning is particularly important when at least one of the fastening tabs 206 also acts as an electrical connection tab.

En conclusion, l'invention a donc mis au point un système de montage de type « one touch » d'une lampe dans le réflecteur, où l'on maintient la lampe en appui sur la face extérieure du réflecteur pendant le passage de la lampe sur le bossage 301, ce qui permet notamment d'éviter de déformer la pièce de connexion électrique 302 lors de l'introduction des languettes de connexion électrique 206.In conclusion, the invention has therefore developed a "one touch" type mounting system of a lamp in the reflector, where the lamp is held in abutment on the outer face of the reflector during the passage of the lamp. on the boss 301, which makes it possible in particular to avoid deforming the electrical connection piece 302 during the introduction of the electrical connection tabs 206.

Claims (16)

  1. System for securing, in a motor vehicle lighting and/or signalling device of the headlight type, between a source of light (200) comprising in particular a bulb (201), a support (202), and a set of locking lugs (207), and a reflector (100) which has an inner surface (102) and an outer surface (101), the said reflector (100) comprising an opening (103; 104) in the vicinity of which the source of light (200) grips the reflector (100) between the locking lugs (207), in contact with the inner surface (102), and an area of contact (208) of the support (202), opposite the outer surface (101) of the reflector (100), characterised in that the source of light (200) comprises at least one protuberant element (305) which is disposed on the area of contact (208) of the support (202), and in that the reflector (100) comprises at least one boss (400) on its outer surface (101), at least one of the protuberant elements (305) coming into contact with the said boss (400) during the operation of locking of the source of light (200) onto the reflector (100), the said boss(es) being placed in positions appropriate such its/their clearance by the said protuberant elements marks the end of the operation of locking of the source of light onto the reflector, the protuberant elements (305) are disposed on flexible plates (209), and in particular on their free end (305), the support (202) for the source of light (200) comprises at least one cavity (401), and in particular as many cavities (401) as the area of contact (208) of the support (202) for the source of light (200) comprises flexible plates (209), each cavity (401) being disposed opposite the free end (211) of each flexible plate (209), characterised in that the passage onto the bosses (400) of the protuberant elements (209) which are disposed on the area of contact (208) of the support (202) for the source of light (200) provides an inertia effect for a rotational movement which is carried out during the operation of locking of the source of light (200) onto the reflector (100), the said inertia effect contributing towards the engagement of at least one securing tongue (206) which is disposed on a lateral surface of the support (202) for the source of light (200), in a retention element (302) which is associated with it, and is disposed on the outer surface (101) of the reflector (100), and at least one of the securing tongues (206) which is disposed on the lateral surface of the support (202) is an electrical connection tongue of the source of light (200).
  2. Securing system according to the preceding claim, characterised in that it assures both the mechanical locking of the source of light (200) on the reflector and the electrical connection of the said source.
  3. Securing system according to one of the preceding claims, characterised in that the reflector (100) comprises on its outer surface (101) as many bosses (400) as the source of light (200) comprises protuberant elements (305) on the area of contact (208) of its support (202), the different protuberant elements (305) passing simultaneously onto the bosses (400) during the operation of locking of the source of light (200) onto the reflector (100).
  4. Securing system according to at least one of the preceding claims, characterised in that the end of the passage / putting into contact of the protuberant elements (305) on the bosses (400) marks the end of the operation of locking of the source of light (200) onto the reflector (100).
  5. Securing system according to at least one of the preceding claims, characterised in that the reflector (100) comprises at least one stop (304) which is disposed on its inner surface (102), each locking lug (207) for the source of light (200) being supported against one of the said stops (304) at the end of the passage / putting into contact of the protuberant elements (305) on the bosses (400).
  6. Securing system according to the preceding claim, characterised in that each cavity (401) has a dimension which permits spacing, in the said cavity, from the free end (211) opposite which it is disposed, and in particular a depth of between 0.5 mm and 2 mm.
  7. Securing system according to claim 5, characterised in that the source of light (200) comprises, regularly spaced, three locking lugs (207), three protuberant elements (305), and three securing tongues (206), and in that the reflector (100) comprises, regularly spaced, three bosses (400), three retention elements (302), and three stops (304).
  8. Securing system according to at least one of the preceding claims, characterised in that the bosses (400) have a thickness of between 0.2 mm and 1.5 mm.
  9. Securing system according to at least one of the preceding claims, characterised in that at least one boss (400) is preceded, in the direction of a movement carried out during the locking operation, by a cavity (500) which is provided in the outer surface (101) of the reflector (100).
  10. Securing system according to the preceding claim, characterised in that the bosses (400) and the cavities (500) which precede them define respectively a first resistance surface and a second resistance surface which meet each protuberant element (305) during a locking operation, the slope of the first resistance surface being greater than the slope of the second resistance surface.
  11. Source of light (200) which intervenes in the securing system according to at least one of the preceding claims.
  12. Source of light (200) according to the preceding claim, characterised in that it is of the DFCS or H4 or H11 type.
  13. Source of light (200) according to claim 11 or 12, characterised in that it has at least one cavity (401) which can co-operate with / receive all or part of a protuberant element (305).
  14. Reflector (100) which intervenes in the securing system according to at least one of the preceding claims.
  15. Motor vehicle equipped with a securing system according to at least one of the preceding claims.
  16. Method for locking a source of light (200) onto a reflector (100) by means of a securing system according to at least one of claims 1 to 10, characterised in that mechanical locking of the source of light (200) onto the reflector (100) is carried out simultaneously with an electrical connection of the source of light (200).
EP04290553A 2003-03-06 2004-03-01 Fastening device for a lamp Expired - Lifetime EP1455134B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0302805A FR2852083B1 (en) 2003-03-06 2003-03-06 FIXING SYSTEM FOR LOCK LAMP
FR0302805 2003-03-06

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Publication Number Publication Date
EP1455134A1 EP1455134A1 (en) 2004-09-08
EP1455134B1 true EP1455134B1 (en) 2011-09-14

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AT (1) ATE524693T1 (en)
FR (1) FR2852083B1 (en)

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JP3250208B2 (en) * 1994-11-22 2002-01-28 住友電装株式会社 Mounting structure of valve socket
DE19951203A1 (en) * 1999-10-22 2001-04-26 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Headlamp bulb for vehicle has metal base part with base flange, reference noses parallel to flange and clips perpendicular to flange that co-operate with reference noses to fix bulb in headlamp
DE10148115A1 (en) * 2001-09-28 2003-04-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Headlamp bulb for vehicle, has vessel and base with reference protrusions formed on reference ring joined to metal holder and base flange and with flat annular surface parallel to plane of flange
DE10200831A1 (en) * 2002-01-02 2003-07-17 Philips Intellectual Property Lamp and headlights for easy installation

Also Published As

Publication number Publication date
EP1455134A1 (en) 2004-09-08
ATE524693T1 (en) 2011-09-15
FR2852083A1 (en) 2004-09-10
FR2852083B1 (en) 2006-04-14

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