EP4352407A1 - Housing for an optical module of a lighting and/or signalling device of a motor vehicle - Google Patents

Housing for an optical module of a lighting and/or signalling device of a motor vehicle

Info

Publication number
EP4352407A1
EP4352407A1 EP22724829.1A EP22724829A EP4352407A1 EP 4352407 A1 EP4352407 A1 EP 4352407A1 EP 22724829 A EP22724829 A EP 22724829A EP 4352407 A1 EP4352407 A1 EP 4352407A1
Authority
EP
European Patent Office
Prior art keywords
housing
parts
metallization
interface
optical module
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.)
Pending
Application number
EP22724829.1A
Other languages
German (de)
French (fr)
Inventor
Filipe Videira
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.)
Stellantis Auto SAS
Original Assignee
Stellantis Auto SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stellantis Auto SAS filed Critical Stellantis Auto SAS
Publication of EP4352407A1 publication Critical patent/EP4352407A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F21S41/50—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • F21S41/55—Attachment thereof

Definitions

  • Optical module housing of a motor vehicle lighting and/or signaling device Optical module housing of a motor vehicle lighting and/or signaling device.
  • the invention relates in general to motor vehicle lighting and/or signaling devices and is more particularly concerned with an optical module housing of a lighting and/or signaling device such as a vehicle headlight. automobile.
  • optical module also referred to as an optical unit, is meant a device comprising at least one light source associated with optical means or components such as lenses, reflectors and the like for generating at least one light beam in a given direction.
  • An optical module is generally contained in a casing which itself belongs to, or is attached to, a motor vehicle headlamp.
  • a projector can include one or more optical modules.
  • the housing can be provided with a stylistic covering giving an attractive appearance to the housing and therefore to the optical module in its part. visible to an observer located outside the vehicle in which the optical module is integrated (at the front of the vehicle in the case of a headlight).
  • the case which matches the external shape of the module, is in the form of a plastic shell obtained by an injection molding process of a thermoplastic material such as ABS (Acrylonitrile butadiene styrene) or PC (polycarbonate ). These materials are generally dark in color: gray or even black.
  • a thermoplastic material such as ABS (Acrylonitrile butadiene styrene) or PC (polycarbonate ).
  • ABS Acrylonitrile butadiene styrene
  • PC polycarbonate
  • These materials are generally dark in color: gray or even black.
  • a process for the partial metallization of plastic parts is known in particular from document FR2944717A.
  • the shape, dimensions and volume of the case must meet technical (mechanical strength) and stylistic constraints and must also meet the constraints of the injection molding and partial metallization processes in several distinct areas chosen to amplify the stylistic effect of the optical module.
  • the aim of the invention is therefore in particular to provide a covering solution making it possible to meet all the constraints set out above.
  • the first subject of the invention is an optical module housing of a lighting and/or signaling device of a motor vehicle, said housing comprising first and second parts of complementary shape obtained after injection molding of a thermoplastic material and of which at least one of the two parts is partially provided with zones of metallization, said box comprising a determined cutting profile defining a mechanical interface for assembly of the first and second parts one on the other; said interface being arranged on at least one of the edges of one of the two parts provided with a metallization zone, in the vicinity of the metallization zone to take account of the molding and metallization constraints.
  • the box has the general shape of a rectangular parallelepiped; the first and second parts of the case, facing each other, respectively comprise edges extending over the two large side faces of the case, facing each other; said edges belonging to the mechanical assembly interface respectively defining assembly ramps cooperating with each other at the time of assembly of the first and second parts according to a determined assembly direction.
  • the first and second parts comprise axial retaining means and lateral retaining means cooperating respectively with each other to ensure the axial and lateral locking of the assembly of the first and second parts of the case.
  • the case further comprises a fixing interface arranged on the first and second parts of the case; said fixing interface being capable of fixing the case to an optical module support in a longitudinal direction of the case.
  • the casing further comprises first and second extension parts of the first and second parts of the casing; the first and second extension parts extending in the same plane extending perpendicularly to a median plane passing through the longitudinal axis of the casing; the first and second extension parts supporting the attachment interface.
  • the first and second extension parts of the housing define a mask vis-à-vis a support intended to receive the fastening interface of the housing.
  • the assembly formed by the first and second parts of the housing defines a covering shell for an optical module of a lighting and/or signaling device; said shell having areas of metallization and areas devoid of metallization.
  • a second object of the present invention is an optical unit equipped with a housing as described above.
  • a third object of the present invention is a motor vehicle lighting and/or signaling device comprising an optical unit as described above.
  • a fourth object of the present invention is a motor vehicle headlamp comprising at least one optical unit as described above.
  • the advantage of having a housing cut into two parts is to make it possible to determine a cutting profile of the housing defining an assembly interface which advantageously separates the zones in which the injection molding and metallization processes are not technically compatible. by making it possible to treat these zones separately before the assembly of the two parts of the case.
  • FIG.1 illustrates, in a perspective view, an embodiment of a housing according to the invention with the two parts of the housing assembled;
  • FIG.2 illustrates the housing according to the invention mounted on an optical unit, according to a longitudinal sectional view
  • FIG.3 illustrates, in a perspective view, the housing according to the invention before the assembly of the two parts of the housing
  • FIG.4 illustrates, in a perspective view, the housing according to the invention during the assembly of the two parts of the housing;
  • FIG.5 illustrates the box according to the invention with the support of the optical unit, according to a cross-sectional view along the section axis II-II of Figure 2;
  • FIG.6 illustrates the box according to the invention in a perspective view, seen from the rear of the box, before the assembly of the two parts of the box;
  • FIG.7 illustrates, in a perspective view, the fixing interface of the box according to the invention
  • FIG.8 illustrates in a perspective view, the optical module in its support intended to receive the box according to the invention
  • FIG.9 illustrates in a perspective view, the assembly consisting of the optical module in its support and the box according to the invention, fixed on the support;
  • FIG.10 illustrates the assembly shown in Figure 9, with a mask attached around the rear part of the case according to the invention
  • FIG.11 illustrates, in a front view, in perspective, a variant of the embodiment of the case according to Figure 1;
  • FIG.12 illustrates, in a rear view, in perspective, the variant of the embodiment of Figure 1.
  • the optical module is considered to be part of a motor vehicle headlamp.
  • the orthonormal reference XYZ to identify the directions of extension of the vehicle and the associated relative concepts, including a longitudinal direction (along X), a transverse direction (along Y) and a vertical direction (according to Z).
  • the longitudinal direction X extends between the front and the rear of the vehicle
  • the transverse direction Y extends between the right and left lateral sides of the vehicle identified with respect to the driver in the driving position of the vehicle
  • the vertical direction Z defines the extension of the vehicle in elevation from its rolling plane on the ground.
  • the relative notions front and back are identified longitudinally
  • the lateral notion and the relative notions right and left are identified transversely
  • the notions as upper and lower or other related relative notions as bottom. and top, etc. are defined vertically with respect to the rolling plane of the vehicle on the ground.
  • FIG. 1 illustrates, in perspective, an embodiment of an optical module box 1 according to the invention.
  • the box 1 defines a kind of shell whose interior size is adapted to closely fit the optical module which in this figure is not shown.
  • Case 1 has the general shape of a rectangular parallelepiped in two parts. It comprises an upper half-shell 2 and a lower half-shell 3 of complementary shape which are assembled and locked together via a mechanical assembly interface 4, symbolically illustrated in the figure by a line segment in broken line.
  • This interface 4 is defined by a so-called cutting profile P which has been determined to take into account the style constraints and the constraints linked to the injection molding and metallization processes as already mentioned above.
  • the cutting profile P has been materialized by a dashed line.
  • the two half-shells 2 and 3 were obtained by an injection molding process of a thermoplastic material such as ABS or PC which has a basic dark, gray or even black tint as also already mentioned above.
  • the material has a black color and consequently the two half-shells 2 and 3 are basically black in color.
  • the upper half-shell 2 which is the most visible for an observer placed at the front of the vehicle, is provided with facets 5 and 6 substantially in relief with respect to the outer surface of the upper half-shell 2 (the facets 5 are noticeably more in relief than the facets 6). Facets 5 and 6 are obtained directly by the molding process. They form a kind of scales on the outer surface of the upper half-shell 2.
  • the facets 5 (which are the most in relief) are covered with a thin layer of aluminum (alumina).
  • the other facets 6 are for their part devoid of metallization and therefore have a black tint.
  • the metallization has the aesthetic effect of presenting on the outer surface of the upper half-shell 2 shiny zones—zone provided with metallization—alternating with dark (black) zones devoid of metallization.
  • the partial metallization process disclosed in particular in the document FR2944717A, implements a masking tool, or masking, 7 symbolized in FIG. 5 by its peripheral edges.
  • the smoothing tool 7 has a size (or grip on the part of the part to be metallized) which requires the provision of a sufficiently clear space around the zone to be metallized.
  • the masking tool 7 generally largely covers the periphery of the parts, or parts of parts, to be metallized (here the facets in relief 5). Parallel arrows oriented towards the facets 5 symbolically represent the operation of metallization of the facets 5.
  • the cutting profile P of the mechanical assembly interface 4 is optimized to pass in the vicinity of the facets 5 (the side edges of the two half-shells 2 and 3 respectively follow this cutting profile P) and thus allows positioning without hindrance of the masking tool 7 for the implementation of the metallization process and this, respecting a configuration imposed by the style.
  • the two upper and lower half-shells respectively referenced 2 and 3, both end in a part advancing towards the front of the case 1 which respectively define "caps” (or visors) 8 and 9 vis-à-vis the optical lens 10 belonging to the optical module 11 and which closes the optical module 11 to the front of the optical module 11 .
  • “Upper cap” 8 will designate the cap of the upper half-shell 2, and “lower cap” 9, the cap of the lower half-shell 3.
  • the lower half-shell 3 is extended forwards in its upper part, by an extension 12 which participates in the consolidation of the free end part of the cap upper 8.
  • the free end part of the upper cap 8 is therefore produced by assembling the two half-shells 2 and 3: the outer part of the upper cap 8 is obtained by the upper half-shell 2 and the part inner part of the upper cap 2 (inner part of the free end part) by the extension 12 of the lower half-shell 3.
  • the extension 12 of the lower half-shell 3 with the lower cap 9 of the lower half-shell lower shell 3, define a perforated front face 13 of the housing 1 framing the optical lens 10 of the optical module 11.
  • the extension 12 is connected to the lower half-shell 3 by two lateral arms 14 and 15.
  • the lower half-shell 3 is fully metallized with the exception of the inner surface of the extension 12 which is devoid of metallization.
  • the junctions of the two arms 14 and 15 of the extension 12 with the lower half-shell 3 are locally thinned to create areas of influence of the masking tool 7 intended to mask the surface not to be metallized. .
  • the lower cap 9 remains one-piece. It advantageously comprises an open cavity 16 (Fig. 1) in its lower external part (therefore not visible to an observer, once the box 1 is installed in the vehicle) making it possible to avoid the molding problems described above.
  • the cutting profile P of the mechanical assembly interface 4 of the two half-shells 2 and 3 is advantageously arranged to ensure that the smoothing tool 7 always largely covers the periphery of the part. or the part of the part to be metallized (facets 5 and lower half-shell 3).
  • the cutting profile P of the assembly interface 4 is also advantageously arranged to define guide ramps 16 and 17 (FIG. 4) for the respective side edges of the side faces of the two half-shells 2 and 3 during their assembly.
  • the assembly direction symbolized in Figure 4 by a double solid arrow 18
  • the axial locking (in the direction of assembly 18) of the two half-shells 2 and 3 is provided by retaining means 19 to 22 distributed respectively at the front of the case 1 (Fig. 2 and Fig. 6).
  • the retaining means comprise a stop 19 projecting from the front edge of the extension 12 of the lower half-shell 3 cooperating with a housing 20 arranged in the end part of the upper cap 8.
  • the retaining means further comprise clipping means 21 and 22 arranged behind the means 19 and 20 and respectively distributed over the extension 12 and the free end part of the upper cap 8.
  • the clipping means 21 and 22 cooperate with each other to ensure locking axial of the two half-shells 2 and 3 when the stop 19 comes to the end of its travel in the housing 20.
  • the lateral locking (along the Y axis) of the two half-shells 2 and 3 is ensured at the rear of the case 1 by two pairs of clipping means 23 and 24 (Fig. 6) arranged respectively on the two side edges of the two half-shells 2 and 3.
  • These two pairs of clipping means 23 and 24 allow lateral locking while avoiding the opening of the two half-shells 2 and 3.
  • two ribs 25 and 26 are arranged projecting from the upper lateral edges of the extension 12 of the lower shell 3. These ribs 25 and 26 cooperate respectively with corresponding grooves 27 and 28 arranged in the upper cap 8 of the upper half-shell 2.
  • the box 1 is itself fixed longitudinally (along the axis X) on the rear part of the support 29 (Fig. 8) by an interface fixing comprising male clipping means 30, 31, 32, defining three tabs integral with the rear edges of the two half-shells 2 and 3: a tab 30 integral with the upper half-shell 2 and the tabs 31 and 32 cuts with the lower half-shell 3.
  • the male clipping means 30, 31 and 32 belonging to the fixing interface, cooperate respectively with female clipping means 33, 34, 35 (Fig. 8) distributed on a reception face 36 of the rear part of the support 29, defining a plane extending along YZ to ensure the axial locking of the box 1 on the rear part of the support 29.
  • the female clipping means 33, 34 and 35 respectively define three housings receiving the lugs 30 , 31 and 32. As illustrated in Figure 9, the two half-shells 2 and 3 are thus held in the rear part of the support 29 and the box 1 is mounted cantilevered in front of the reception face 36.
  • FIG. 8 longitudinal ribs 37, 38 and 39 (Fig. 8), are provided along the entire length of the front part of the support 29 of the optical module 10, 11 extending along the axis X.
  • These same ribs 37, 38 and 39 form support stops, here three in number, arranged around the support 29 so as to form an isostatic system (Fig. 5).
  • Figure 5 is a cross section (along Y) of the assembly formed by the support 29 and the housing 1: the section being considered along the section axis II-II of Figure 2.
  • the housing 1 cannot no longer move either vertically (along the Z axis) or transversely (along the Y axis) relative to the front part of the support 29.
  • an additional mask 40 extending substantially along a vertical plane (along YZ), parallel to the reception face 36 of the housing 1 can be attached around the housing 1 in its rear part leaving visible, for an outside observer located at the front of the vehicle, only the housing and the lens 10 of the optical unit 11 .
  • the mask can be an integral part of the housing 1 '.
  • the mask is then divided into two parts 41 and 42: a first part 41 is made in one piece with the rear part of the upper half-shell 2' and a second part 42 is made in one piece with the rear part of the lower half-shell 3 '.
  • the mask 41, 42 extends in a YZ plane parallel to the receiving face 36 of the support 29.
  • additional clipping means 43 and 44 are provided, at the mechanical assembly interface of the two half-shells 2' and 3', respectively on the first and second mask parts 41 and 42. They cooperate with each other to ensure the locking of the rear part of the two half-shells 2' and 3' and of the two mask parts 41 and 42 in an inclined direction corresponding to the assembly direction 18 (FIG. 4).
  • Three fixing lugs, referenced 45, 46 and 47 respectively, extend in the same direction (along X) perpendicular to the YZ plane in which the two mask parts 41 and 42 extend.
  • the rear face of the first mask part 41 and the two legs 46 and 47 are integral with the rear face of the second mask part 42.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The invention relates to a housing (1, 1') for an optical module of a lighting and/or signalling device of a motor vehicle, the housing (1, 1') having first (2, 2') and second (3, 3') parts of complementary shape that are obtained following injection-moulding of a thermoplastic material and of which at least one of the two parts (2, 2' or 3, 3') is provided partially with metallization zones (5), the housing (1, 1') having a predetermined cutting-line profile (P) defining a mechanical interface (4, 4') for the assembly of the first (2, 2') and second parts (3, 3') with one another; the interface (4, 4') being arranged on at least one of the edges of one of the two parts (2, 2' or 3, 3') provided with a metallization zone (5), in the vicinity of the metallization zone (5) in order to take account of moulding and metallization stresses.

Description

DESCRIPTION DESCRIPTION
Titre de l’invention : Boîtier de module optique d’un dispositif d’éclairage et/ou de signalisation de véhicule automobile. Title of the invention: Optical module housing of a motor vehicle lighting and/or signaling device.
La présente invention revendique la priorité de la demande française 2106157 déposée le 11 .06.2021 dont le contenu (texte, dessins et revendications) est ici incorporé par référence The present invention claims the priority of French application 2106157 filed on June 11, 2021, the content of which (text, drawings and claims) is incorporated herein by reference.
L'invention concerne en général les dispositifs d’éclairage et/ou de signalisation de véhicules automobiles et s’intéresse plus particulièrement à un boîtier de module optique d’un dispositif d’éclairage et/ou de signalisation tel qu’un projecteur de véhicule automobile. The invention relates in general to motor vehicle lighting and/or signaling devices and is more particularly concerned with an optical module housing of a lighting and/or signaling device such as a vehicle headlight. automobile.
Par module optique, désigné également bloc optique, on entend un dispositif comportant au moins une source de lumière associée à des moyens ou composants optiques tels que des lentilles, réflecteurs et autres pour générer au moins un faisceau lumineux dans une direction déterminée. Un module optique est généralement contenu dans un boîtier qui appartient lui-même à, ou est rapporté dans, un projecteur de véhicule automobile. Un projecteur peut comporter un ou plusieurs modules optiques. By optical module, also referred to as an optical unit, is meant a device comprising at least one light source associated with optical means or components such as lenses, reflectors and the like for generating at least one light beam in a given direction. An optical module is generally contained in a casing which itself belongs to, or is attached to, a motor vehicle headlamp. A projector can include one or more optical modules.
Pour rendre plus attrayante la partie visible du module optique tout en masquant les parties dites « techniques » comprenant les composants internes du module, le boîtier peut être pourvu d’un habillage stylistique donnant un aspect attrayant au boîtier et donc au module optique dans sa partie visible pour un observateur situé à l’extérieur du véhicule dans lequel est intégré le module optique (à l’avant du véhicule s’agissant d’un projecteur). To make the visible part of the optical module more attractive while masking the so-called "technical" parts comprising the internal components of the module, the housing can be provided with a stylistic covering giving an attractive appearance to the housing and therefore to the optical module in its part. visible to an observer located outside the vehicle in which the optical module is integrated (at the front of the vehicle in the case of a headlight).
Le boîtier qui épouse la forme extérieure du module, se présente sous la forme d’une coque en plastique obtenue par un procédé de moulage par injection d’un matériau thermoplastique comme par exemple l’ABS (Acrylonitrile butadiène styrène) ou le PC (polycarbonate). Ces matériaux sont généralement de couleur sombre : grise voire noire. Pour agrémenter le boîtier qui est obtenu à partir de ces matériaux, il est connu de recouvrir au moins partiellement le boîtier de fines couches d’oxyde d’aluminium (alumine) suivant un procédé connu de métallisation. Un procédé de métallisation partielle de pièces plastiques est notamment connu du document FR2944717A. The case, which matches the external shape of the module, is in the form of a plastic shell obtained by an injection molding process of a thermoplastic material such as ABS (Acrylonitrile butadiene styrene) or PC (polycarbonate ). These materials are generally dark in color: gray or even black. To decorate the case which is obtained from these materials, it is known to at least partially cover the case with thin layers of aluminum oxide (alumina) according to a known metallization process. A process for the partial metallization of plastic parts is known in particular from document FR2944717A.
La forme, les dimensions et le volume du boitier doivent répondre à des contraintes techniques (tenue mécanique), stylistiques et doivent répondre d’autre part aux contraintes des procédés de moulage par injection et de métallisation partielle dans plusieurs zones distinctes et choisies pour amplifier l’effet stylistique du module optique. The shape, dimensions and volume of the case must meet technical (mechanical strength) and stylistic constraints and must also meet the constraints of the injection molding and partial metallization processes in several distinct areas chosen to amplify the stylistic effect of the optical module.
L'invention a donc notamment pour but d’apporter une solution d’habillage permettant de répondre à toutes les contraintes énoncées ci-dessus. The aim of the invention is therefore in particular to provide a covering solution making it possible to meet all the constraints set out above.
L’invention a pour premier objet, un boitier de module optique d’un dispositif d’éclairage et/ou de signalisation d’un véhicule automobile, ledit boitier comportant des première et deuxième parties de forme complémentaire obtenues après moulage par injection d’un matériau thermoplastique et dont au moins une des deux parties est pourvue partiellement de zones de métallisation, ledit boitier comportant un profil de découpe déterminé définissant une interface mécanique d’assemblage des première et deuxième parties l’une sur l’autre ; ladite interface étant agencée sur au moins un des bords d’une des deux parties pourvue d’une zone de métallisation, au voisinage de la zone de métallisation pour tenir compte des contraintes de moulage et de métallisation. The first subject of the invention is an optical module housing of a lighting and/or signaling device of a motor vehicle, said housing comprising first and second parts of complementary shape obtained after injection molding of a thermoplastic material and of which at least one of the two parts is partially provided with zones of metallization, said box comprising a determined cutting profile defining a mechanical interface for assembly of the first and second parts one on the other; said interface being arranged on at least one of the edges of one of the two parts provided with a metallization zone, in the vicinity of the metallization zone to take account of the molding and metallization constraints.
Selon une caractéristique, le boitier présente une forme générale de parallélépipède rectangle ; les première et deuxième parties du boitier, en regard l’une de l’autre, comportent respectivement des bords s’étendant sur les deux grandes faces latérales du boitier, en regard l’une de l’autre ; lesdits bords appartenant à l’interface mécanique d’assemblage définissant respectivement des rampes d’assemblage coopérant entre elles au moment de l’assemblage des première et deuxième parties selon une direction d’assemblage déterminée. According to one characteristic, the box has the general shape of a rectangular parallelepiped; the first and second parts of the case, facing each other, respectively comprise edges extending over the two large side faces of the case, facing each other; said edges belonging to the mechanical assembly interface respectively defining assembly ramps cooperating with each other at the time of assembly of the first and second parts according to a determined assembly direction.
Selon une autre caractéristique, les première et deuxième parties comportent des moyens de retenues axiales et des moyens de retenues latérales coopérant respectivement entre eux pour assurer le verrouillage axial et latéral de l’assemblage des première et deuxième parties du boitier. According to another characteristic, the first and second parts comprise axial retaining means and lateral retaining means cooperating respectively with each other to ensure the axial and lateral locking of the assembly of the first and second parts of the case.
Selon une autre caractéristique, le boitier comporte en outre une interface de fixation aménagée sur les première et deuxième parties du boitier ; ladite interface de fixation étant apte à fixer le boitier sur un support de module optique suivant une direction longitudinale du boitier. Selon une autre caractéristique, le boîtier comporte en outre, des première et deuxième parties d’extension des première et deuxième parties du boîtier ; les première et deuxième parties d’extension s’étendant dans un même plan s’étendant perpendiculairement à un plan médian passant par l’axe longitudinal du boîtier ; les première et deuxième parties d’extension supportant l’interface de fixation. According to another feature, the case further comprises a fixing interface arranged on the first and second parts of the case; said fixing interface being capable of fixing the case to an optical module support in a longitudinal direction of the case. According to another characteristic, the casing further comprises first and second extension parts of the first and second parts of the casing; the first and second extension parts extending in the same plane extending perpendicularly to a median plane passing through the longitudinal axis of the casing; the first and second extension parts supporting the attachment interface.
Selon une autre caractéristique, les première et deuxième parties d’extension du boîtier définisse un masque vis-à-vis d’un support destiné à recevoir l’interface de fixation du boîtier. According to another characteristic, the first and second extension parts of the housing define a mask vis-à-vis a support intended to receive the fastening interface of the housing.
Selon une autre caractéristique, l’ensemble formé par les première et deuxième parties du boîtier définit une coque d’habillage pour un module optique de dispositif d’éclairage et/ou de signalisation ; ladite coque présentant des zones de métallisation et des zones dépourvues de métallisation. According to another characteristic, the assembly formed by the first and second parts of the housing defines a covering shell for an optical module of a lighting and/or signaling device; said shell having areas of metallization and areas devoid of metallization.
La présente invention a pour deuxième objet, un bloc optique équipé d’un boîtier tel que décrit ci-dessus. A second object of the present invention is an optical unit equipped with a housing as described above.
La présente invention a pour troisième objet un dispositif d’éclairage et/ou de signalisation de véhicule automobile comportant un bloc optique tel que décrit ci- dessus. A third object of the present invention is a motor vehicle lighting and/or signaling device comprising an optical unit as described above.
Enfin, la présente invention a pour quatrième objet, un projecteur de véhicule automobile comportant au moins un bloc optique tel que décrit ci-dessus. L’avantage d’avoir un boîtier découpé en deux parties est de permettre de déterminer un profil de découpe du boîtier définissant une interface d’assemblage qui sépare avantageusement les zones dans lesquelles les procédés de moulage par injection et de métallisation ne sont pas techniquement compatibles en permettant de traiter ces zones séparément avant l’assemblage des deux parties du boîtier. Finally, a fourth object of the present invention is a motor vehicle headlamp comprising at least one optical unit as described above. The advantage of having a housing cut into two parts is to make it possible to determine a cutting profile of the housing defining an assembly interface which advantageously separates the zones in which the injection molding and metallization processes are not technically compatible. by making it possible to treat these zones separately before the assembly of the two parts of the case.
D'autres caractéristiques et avantages de l'invention apparaîtront à l'examen de la description détaillée ci-après, et du dessin annexé, sur lequel : Other characteristics and advantages of the invention will appear on examination of the detailed description below, and of the appended drawing, in which:
[Fig .1 ] illustre, dans une vue en perspective, un mode de réalisation d'un boîtier selon l'invention avec les deux parties du boîtier assemblées ; [Fig .1] illustrates, in a perspective view, an embodiment of a housing according to the invention with the two parts of the housing assembled;
[Fig.2] illustre le boîtier selon l’invention monté sur un bloc optique, selon un vue en coupe longitudinale ; [Fig.2] illustrates the housing according to the invention mounted on an optical unit, according to a longitudinal sectional view;
[Fig.3] illustre, selon une vue en perspective, le boîtier selon l’invention avant l’assemblage des deux parties du boîtier ; [Fig .4] illustre, selon une vue en perspective, le boitier selon l’invention pendant l’assemblage des deux parties du boitier ; [Fig.3] illustrates, in a perspective view, the housing according to the invention before the assembly of the two parts of the housing; [Fig .4] illustrates, in a perspective view, the housing according to the invention during the assembly of the two parts of the housing;
[Fig.5] illustre le boitier selon l’invention avec le support du bloc optique, selon une vue en coupe transversale suivant l’axe de coupe ll-ll de la figure 2 ; [Fig.5] illustrates the box according to the invention with the support of the optical unit, according to a cross-sectional view along the section axis II-II of Figure 2;
[Fig.6] illustre le boitier selon l’invention selon une vue en perspective, vue de l’arrière du boitier, avant l’assemblage des deux parties du boitier ; [Fig.6] illustrates the box according to the invention in a perspective view, seen from the rear of the box, before the assembly of the two parts of the box;
[Fig.7] illustre, selon une vue en perspective, l’interface de fixation du boitier selon l’invention ; [Fig.7] illustrates, in a perspective view, the fixing interface of the box according to the invention;
[Fig.8] illustre selon une vue en perspective, le module optique dans son support destiné à recevoir le boitier selon l’invention ; [Fig.8] illustrates in a perspective view, the optical module in its support intended to receive the box according to the invention;
[Fig.9] illustre selon une vue en perspective, l’ensemble constitué du module optique dans son support et du boitier selon l’invention, fixé sur le support ; [Fig.9] illustrates in a perspective view, the assembly consisting of the optical module in its support and the box according to the invention, fixed on the support;
[Fig.10] illustre l’ensemble illustré à la figure 9, avec un masque rapporté autour de la partie arrière du boitier selon l’invention ; [Fig.10] illustrates the assembly shown in Figure 9, with a mask attached around the rear part of the case according to the invention;
[Fig.11] illustre, selon une vue avant, en perspective, une variante du mode de réalisation du boitier selon la figure 1 ; et [Fig.11] illustrates, in a front view, in perspective, a variant of the embodiment of the case according to Figure 1; and
[Fig.12] illustre, selon une vue arrière, en perspective, la variante du mode de réalisation de la figure 1 . [Fig.12] illustrates, in a rear view, in perspective, the variant of the embodiment of Figure 1.
Dans ce qui suit, on considère que le module optique fait partie d’un projecteur de véhicule automobile. In what follows, the optical module is considered to be part of a motor vehicle headlamp.
Les éléments représentés sur les figures, sont orientés à l'intérieur d'un même repère orthonormé XYZ et les éléments identiques sont désignés par les mêmes références alphanumériques. The elements represented in the figures are oriented inside the same orthonormal reference frame XYZ and the identical elements are designated by the same alphanumeric references.
Pour cela et sauf précision contraire, il est fait référence au repère orthonormé XYZ pour identifier les directions d'extension du véhicule et les notions relatives associées, dont une direction longitudinale (selon X), une direction transversale (selon Y) et une direction verticale (selon Z). La direction longitudinale X s'étend entre l'avant et l'arrière du véhicule, la direction transversale Y s'étend entre les côtés latéraux droit et gauche du véhicule identifiés par rapport au conducteur en station de conduite du véhicule, et la direction verticale Z définit l'extension du véhicule en élévation depuis son plan de roulage au sol. Par suite, les notions relatives avant et arrière sont identifiées longitudinalement, la notion latérale et les notions relatives droit et gauche sont identifiées transversalement, les notions comme supérieur et inférieur ou autres notions relatives apparentées comme bas et haut, ... sont définies verticalement par rapport au plan de roulage du véhicule au sol. For this and unless otherwise specified, reference is made to the orthonormal reference XYZ to identify the directions of extension of the vehicle and the associated relative concepts, including a longitudinal direction (along X), a transverse direction (along Y) and a vertical direction (according to Z). The longitudinal direction X extends between the front and the rear of the vehicle, the transverse direction Y extends between the right and left lateral sides of the vehicle identified with respect to the driver in the driving position of the vehicle, and the vertical direction Z defines the extension of the vehicle in elevation from its rolling plane on the ground. As a result, the relative notions front and back are identified longitudinally, the lateral notion and the relative notions right and left are identified transversely, the notions as upper and lower or other related relative notions as bottom. and top, etc. are defined vertically with respect to the rolling plane of the vehicle on the ground.
La figure 1 illustre, en perspective, un mode de réalisation d’un boitier 1 de module optique selon l’invention. Sur cette figure, il est clairement visible que le boitier 1 définit une sorte de coque dont l’encombrement intérieur est adapté pour épouser au plus près le module optique qui sur cette figure n’est pas représenté. FIG. 1 illustrates, in perspective, an embodiment of an optical module box 1 according to the invention. In this figure, it is clearly visible that the box 1 defines a kind of shell whose interior size is adapted to closely fit the optical module which in this figure is not shown.
Le boitier 1 présente une forme générale d’un parallélépipède rectangle en deux parties. Il comporte une demi-coque supérieure 2 et une demi-coque inférieure 3 de forme complémentaire qui sont assemblées et verrouillées entres elle via une interface mécanique d’assemblage 4, illustrée symboliquement sur la figure par un segment de droite en trait interrompu. Case 1 has the general shape of a rectangular parallelepiped in two parts. It comprises an upper half-shell 2 and a lower half-shell 3 of complementary shape which are assembled and locked together via a mechanical assembly interface 4, symbolically illustrated in the figure by a line segment in broken line.
Cette interface 4 est définie par un profil dit de découpe P qui a été déterminé pour prendre en compte les contraintes de style et les contraintes liées aux procédés de moulage par injection et de métallisation comme déjà évoqué ci-dessus. This interface 4 is defined by a so-called cutting profile P which has been determined to take into account the style constraints and the constraints linked to the injection molding and metallization processes as already mentioned above.
Sur la figure, le profil de découpe P a été matérialisé par un tracé en trait interrompu. In the figure, the cutting profile P has been materialized by a dashed line.
Les deux demi-coques 2 et 3 ont été obtenues par un procédé de moulage par injection d’un matériau thermoplastique tel que l’ABS ou le PC qui présente de base une teinte sombre, grise voire noire comme également déjà évoqué ci-dessus. Dans le mode de réalisation décrit, le matériau présente une couleur noire et en conséquence les deux demi-coques 2 et 3 sont de base de couleur noire. The two half-shells 2 and 3 were obtained by an injection molding process of a thermoplastic material such as ABS or PC which has a basic dark, gray or even black tint as also already mentioned above. In the embodiment described, the material has a black color and consequently the two half-shells 2 and 3 are basically black in color.
La demi-coque supérieure 2 qui est la plus visible pour un observateur placé à l’avant du véhicule, est pourvue de facettes 5 et 6 sensiblement en relief par rapport à la surface extérieure de la demi-coque supérieure 2 (les facettes 5 sont sensiblement plus en relief que les facettes 6). Les facettes 5 et 6 sont obtenues directement par le procédé de moulage. Elles forment des sortes d’écailles sur la surface extérieure de la demi-coque supérieure 2. The upper half-shell 2 which is the most visible for an observer placed at the front of the vehicle, is provided with facets 5 and 6 substantially in relief with respect to the outer surface of the upper half-shell 2 (the facets 5 are noticeably more in relief than the facets 6). Facets 5 and 6 are obtained directly by the molding process. They form a kind of scales on the outer surface of the upper half-shell 2.
Dans le mode de réalisation décrit, les facettes 5 (qui sont les plus en relief) sont recouvertes d’une fine couche d’aluminium (alumine). Les autres facettes 6 sont quant à elles dépourvues de métallisation et présentent donc une teinte noire. La métallisation a pour effet esthétique de présenter sur la surface extérieure de la demi-coque supérieure 2 des zone brillantes - zone pourvue d’une métallisation - en alternance avec des zones sombres (noires) dépourvues de métallisation. Le procédé de métallisation partielle, divulgué notamment dans le document FR2944717A, met en œuvre un outil de masquage, ou marouflage, 7 symbolisé sur la figure 5 par ses bords périphériques. L’outil de marouflage 7 présente un encombrement (ou emprise sur la partie de pièce à métalliser) qui nécessite de prévoir un espace suffisamment dégagé autour de la zone à métalliser. L’outil de marouflage 7 recouvre généralement en grande partie la périphérie des pièces, ou parties de pièces, à métalliser (ici les facettes en relief 5). Des flèches parallèles orientées vers les facettes 5 représentent symboliquement l’opération de métallisation des facettes 5. In the embodiment described, the facets 5 (which are the most in relief) are covered with a thin layer of aluminum (alumina). The other facets 6 are for their part devoid of metallization and therefore have a black tint. The metallization has the aesthetic effect of presenting on the outer surface of the upper half-shell 2 shiny zones—zone provided with metallization—alternating with dark (black) zones devoid of metallization. The partial metallization process, disclosed in particular in the document FR2944717A, implements a masking tool, or masking, 7 symbolized in FIG. 5 by its peripheral edges. The smoothing tool 7 has a size (or grip on the part of the part to be metallized) which requires the provision of a sufficiently clear space around the zone to be metallized. The masking tool 7 generally largely covers the periphery of the parts, or parts of parts, to be metallized (here the facets in relief 5). Parallel arrows oriented towards the facets 5 symbolically represent the operation of metallization of the facets 5.
Le profil de découpe P de l’interface mécanique d’assemblage 4 est optimisé pour passer au voisinage des facettes 5 (les bords latéraux des deux demi-coques 2 et 3 suivent respectivement ce profil de découpe P) et permet ainsi le positionnement sans gêne de l’outil de marouflage 7 pour la mise en œuvre du procédé de métallisation et ce, en respectant une configuration imposée par le style. The cutting profile P of the mechanical assembly interface 4 is optimized to pass in the vicinity of the facets 5 (the side edges of the two half-shells 2 and 3 respectively follow this cutting profile P) and thus allows positioning without hindrance of the masking tool 7 for the implementation of the metallization process and this, respecting a configuration imposed by the style.
Tel qu’illustré à la figure 2, selon une vue en coupe longitudinale (suivi l’axe X), les deux demi-coques supérieure et inférieure, respectivement référencées 2 et 3, se terminent toutes les deux par une partie s’avançant vers l’avant du boîtier 1 qui définissent respectivement des « casquettes » (ou visières) 8 et 9 vis-à-vis de la lentille optique 10 appartenant au module optique 11 et qui ferme le module optique 11 à l’avant du module optique 11 . On désignera par « casquette supérieure » 8 la casquette de la demi-coque supérieure 2, et par « casquette inférieure » 9, la casquette de la demi-coque inférieure 3. As illustrated in FIG. 2, according to a view in longitudinal section (following the axis X), the two upper and lower half-shells, respectively referenced 2 and 3, both end in a part advancing towards the front of the case 1 which respectively define "caps" (or visors) 8 and 9 vis-à-vis the optical lens 10 belonging to the optical module 11 and which closes the optical module 11 to the front of the optical module 11 . “Upper cap” 8 will designate the cap of the upper half-shell 2, and “lower cap” 9, the cap of the lower half-shell 3.
La faible épaisseur des parties d’extrémité libres des casquettes 8 et 9, agencées respectivement en haut et en bas de la lentille optique 10, tel qu’imposée par le style, rend impossible leur réalisation en une seule pièce par un procédé de moulage par injection pour les raisons suivantes : The small thickness of the free end parts of the caps 8 and 9, arranged respectively at the top and at the bottom of the optical lens 10, as imposed by the style, makes it impossible to produce them in a single piece by a molding process by injection for the following reasons:
- l’introduction d’une fine lame d’acier dans le moule en partie interne du moule, pour réaliser la partie d’extrémité de la casquette supérieure 8, présentant une cavité presque fermée, rend celle-ci top fragile aux pressions mises en jeu lors de l’étape d’injection ; - the introduction of a thin steel blade into the mold in the internal part of the mold, to produce the end part of the upper cap 8, having an almost closed cavity, makes this top fragile to the pressures applied clearance during the injection step;
- des risques de casse du moule peuvent survenir au moment du refroidissement de la lame ; - risk of mold breakage may occur when the blade cools;
- une déformation de la lame non contrôlée peut entraîner des modifications d’épaisseur non contrôlée et, au final : - des problèmes de qualité visuelle sur la pièce injectée à cause d’une hétérogénéité du refroidissement peuvent apparaître. - an uncontrolled deformation of the blade can lead to uncontrolled changes in thickness and, in the end: - visual quality problems on the injected part due to uneven cooling may appear.
Pour contourner ce problème et comme illustré aux figures 2 et 3 notamment, la demi-coque inférieure 3 se prolonge vers l’avant dans sa partie haute, par une extension 12 qui participe à la consolidation de la partie d’extrémité libre de la casquette supérieure 8. La partie d’extrémité libre de la casquette supérieure 8 est donc réalisée par l’assemblage des deux demi-coques 2 et 3 : la partie extérieure de la casquette supérieure 8 est obtenue par la demi-coque supérieure 2 et la partie intérieure de la casquette supérieure 2 (partie intérieure de la partie d’extrémité libre) par l’extension 12 de la demi-coque inférieure 3. L’extension 12 de la demi- coque inférieure 3 avec la casquette inférieure 9 de la demi-coque inférieure 3, définissent une face avant ajourée 13 du boîtier 1 encadrant la lentille optique 10 du module optique 11. L’extension 12 est reliée à la demi-coque inférieure 3 par deux bras latéraux 14 et 15. To circumvent this problem and as illustrated in Figures 2 and 3 in particular, the lower half-shell 3 is extended forwards in its upper part, by an extension 12 which participates in the consolidation of the free end part of the cap upper 8. The free end part of the upper cap 8 is therefore produced by assembling the two half-shells 2 and 3: the outer part of the upper cap 8 is obtained by the upper half-shell 2 and the part inner part of the upper cap 2 (inner part of the free end part) by the extension 12 of the lower half-shell 3. The extension 12 of the lower half-shell 3 with the lower cap 9 of the lower half-shell lower shell 3, define a perforated front face 13 of the housing 1 framing the optical lens 10 of the optical module 11. The extension 12 is connected to the lower half-shell 3 by two lateral arms 14 and 15.
La demi-coque inférieure 3 est intégralement métallisée à l’exception de la surface intérieure de l’extension 12 qui elle, est dépourvue de métallisation. A cet effet, les jonctions des deux bras 14 et 15 de l’extension 12 avec la demi-coque inférieure 3 sont localement amincies pour créer des zone d’emprise de l’outil de marouflage 7 destiné à masquer la surface à ne pas métalliser. The lower half-shell 3 is fully metallized with the exception of the inner surface of the extension 12 which is devoid of metallization. For this purpose, the junctions of the two arms 14 and 15 of the extension 12 with the lower half-shell 3 are locally thinned to create areas of influence of the masking tool 7 intended to mask the surface not to be metallized. .
La casquette inférieure 9 reste quant à elle mono pièce. Elle comporte avantageusement une cavité ouverte 16 (Fig. 1 ) dans sa partie externe inférieure (donc non visible par un observateur, une fois le boîtier 1 installé dans le véhicule) permettant d’éviter les problèmes de moulage décrits ci-dessus. The lower cap 9 remains one-piece. It advantageously comprises an open cavity 16 (Fig. 1) in its lower external part (therefore not visible to an observer, once the box 1 is installed in the vehicle) making it possible to avoid the molding problems described above.
De manière générale, le profil de découpe P de l’interface mécanique d’assemblage 4 des deux demi-coques 2 et 3 est avantageusement agencé pour s’assurer que l’outil de marouflage 7 recouvre toujours en grand partie la périphérie de la pièce ou la partie de pièce à métalliser (facettes 5 et demi-coque inférieure 3). In general, the cutting profile P of the mechanical assembly interface 4 of the two half-shells 2 and 3 is advantageously arranged to ensure that the smoothing tool 7 always largely covers the periphery of the part. or the part of the part to be metallized (facets 5 and lower half-shell 3).
Le profil de découpe P de l’interface d’assemblage 4 est également avantageusement agencé pour définir des rampes de guidage 16 et 17 (Fig. 4) pour les bords latéraux respectifs des faces latérales des deux demi-coques 2 et 3 lors de leur assemblage. La direction d’assemblage (symbolisée sur la figure 4 par une double flèche pleine 18) se fait ainsi dans la direction générale du profil de découpe P. Le verrouillage axial (suivant la direction d’assemblage 18) des deux demi-coques 2 et 3 est assuré par des moyens de retenue 19 à 22 répartis respectivement, à l’avant du boitier 1 (Fig. 2 et Fig. 6). Les moyens de retenue comportent une butée 19 en saillie du bord avant de l’extension 12 de la demi-coque inférieure 3 coopérant avec un logement 20 aménagé dans la partie d’extrémité de la casquette supérieure 8. Les moyens de retenue comportent en outre des moyens de clipsage 21 et 22 disposés en arrière des moyens 19 et 20 et répartis respectivement sur l’extension 12 et la partie d’extrémité libre de la casquette supérieure 8. Les moyens de clipsage 21 et 22 coopèrent entre eux pour assurer le verrouillage axial des deux demi-coques 2 et 3 quand la butée 19 vient en fin de course dans le logement 20. Le verrouillage latéral (suivant l’axe Y) des deux demi-coques 2 et 3 est assuré à l’arrière du boitier 1 par deux paires de moyens de clipsage 23 et 24 (Fig. 6) aménagées respectivement sur les deux bords latéraux des deux demi-coques 2 et 3. Ces deux paires de moyens de clipsage 23 et 24 permettent un verrouillage latéral en évitant l’ouverture des deux demi-coques 2 et 3. The cutting profile P of the assembly interface 4 is also advantageously arranged to define guide ramps 16 and 17 (FIG. 4) for the respective side edges of the side faces of the two half-shells 2 and 3 during their assembly. The assembly direction (symbolized in Figure 4 by a double solid arrow 18) is thus done in the general direction of the cutting profile P. The axial locking (in the direction of assembly 18) of the two half-shells 2 and 3 is provided by retaining means 19 to 22 distributed respectively at the front of the case 1 (Fig. 2 and Fig. 6). The retaining means comprise a stop 19 projecting from the front edge of the extension 12 of the lower half-shell 3 cooperating with a housing 20 arranged in the end part of the upper cap 8. The retaining means further comprise clipping means 21 and 22 arranged behind the means 19 and 20 and respectively distributed over the extension 12 and the free end part of the upper cap 8. The clipping means 21 and 22 cooperate with each other to ensure locking axial of the two half-shells 2 and 3 when the stop 19 comes to the end of its travel in the housing 20. The lateral locking (along the Y axis) of the two half-shells 2 and 3 is ensured at the rear of the case 1 by two pairs of clipping means 23 and 24 (Fig. 6) arranged respectively on the two side edges of the two half-shells 2 and 3. These two pairs of clipping means 23 and 24 allow lateral locking while avoiding the opening of the two half-shells 2 and 3.
Afin d’éviter un affaissement de la partie d’extrémité libre de la casquette supérieure 8, deux nervures 25 et 26 sont aménagées en saillie des bords latéraux supérieurs de l’extension 12 de la coque inférieure 3. Ces nervures 25 et 26 coopèrent respectivement avec des gorges correspondantes 27 et 28 aménagées dans la casquette supérieure 8 de la demi-coque supérieure 2. In order to prevent the free end part of the upper cap 8 from collapsing, two ribs 25 and 26 are arranged projecting from the upper lateral edges of the extension 12 of the lower shell 3. These ribs 25 and 26 cooperate respectively with corresponding grooves 27 and 28 arranged in the upper cap 8 of the upper half-shell 2.
Une fois les deux demi-coques 2 et 3 assemblées et verrouillées (Fig. 7), le boitier 1 est lui-même fixé longitudinalement (suivant l’axe X) sur la partie arrière du support 29 (Fig. 8) par une interface de fixation comportant des moyens de clipsage mâles 30, 31 , 32, définissant trois pattes venues de matière avec les bords arrière des deux demi-coques 2 et 3 : une patte 30 venue de matière avec la demi-coque supérieure 2 et les pattes 31 et 32 venues de matière avec la demi-coque inférieure 3. Once the two half-shells 2 and 3 are assembled and locked (Fig. 7), the box 1 is itself fixed longitudinally (along the axis X) on the rear part of the support 29 (Fig. 8) by an interface fixing comprising male clipping means 30, 31, 32, defining three tabs integral with the rear edges of the two half-shells 2 and 3: a tab 30 integral with the upper half-shell 2 and the tabs 31 and 32 cuts with the lower half-shell 3.
Les moyens de clipsage males 30, 31 et 32 (Fig. 7), appartenant à l’interface de fixation, coopèrent respectivement avec des moyens de clipsage femelles 33, 34, 35 (Fig. 8) répartis sur une face d’accueil 36 de la partie arrière du support 29, définissant un plan s’étendant selon YZ pour assurer le verrouillage axial du boitier 1 sur la partie arrière du support 29. Les moyens de clipsage femelles 33, 34 et 35 définissent respectivement trois logements recevant les pattes 30, 31 et 32. Comme illustré à la figure 9, les deux demi-coques 2 et 3 sont ainsi maintenues en partie arrière du support 29 et le boîtier 1 se trouve monté en porte à faux en avant de la face d’accueil 36. The male clipping means 30, 31 and 32 (Fig. 7), belonging to the fixing interface, cooperate respectively with female clipping means 33, 34, 35 (Fig. 8) distributed on a reception face 36 of the rear part of the support 29, defining a plane extending along YZ to ensure the axial locking of the box 1 on the rear part of the support 29. The female clipping means 33, 34 and 35 respectively define three housings receiving the lugs 30 , 31 and 32. As illustrated in Figure 9, the two half-shells 2 and 3 are thus held in the rear part of the support 29 and the box 1 is mounted cantilevered in front of the reception face 36.
Pour rigidifier l’assemblage du boîtier 1 sur la partie avant du support 29 contenant le module optique, 10, 11 , des nervures longitudinales 37, 38 et 39 (Fig. 8), sont aménagées sur tout le long de la partie avant du support 29 du module optique 10, 11 en s’étendant suivant l’axe X. Ces mêmes nervures 37, 38 et 39 forment des butées d’appui, ici au nombre de trois, disposées autour du support 29 de manière à former un système isostatique (Fig. 5). La figure 5 est une section transversale (selon Y) de l’ensemble formé par le support 29 et le boîtier 1 : la section étant considérée suivant l’axe de coupe ll-ll de la figure 2. Ainsi, le boîtier 1 ne peut plus se déplacer ni verticalement (suivant l’axe Z), ni transversalement (suivant l’axe Y) par rapport à la partie avant du support 29. To stiffen the assembly of the housing 1 on the front part of the support 29 containing the optical module, 10, 11, longitudinal ribs 37, 38 and 39 (Fig. 8), are provided along the entire length of the front part of the support 29 of the optical module 10, 11 extending along the axis X. These same ribs 37, 38 and 39 form support stops, here three in number, arranged around the support 29 so as to form an isostatic system (Fig. 5). Figure 5 is a cross section (along Y) of the assembly formed by the support 29 and the housing 1: the section being considered along the section axis II-II of Figure 2. Thus, the housing 1 cannot no longer move either vertically (along the Z axis) or transversely (along the Y axis) relative to the front part of the support 29.
Enfin, en référence à la figure 10, pour masquer la partie arrière du support 29 et ses parties techniques associées (notamment l’interface de fixation), un masque additionnel 40 s’étendant sensiblement selon un plan vertical (suivant YZ), parallèle à la face d’accueil 36 du boîtier 1 , peut être rapporté autour du boîtier 1 dans sa partie arrière ne laissant visible, pour un observateur extérieur situé à l’avant du véhicule, que le boîtier et la lentille 10 du bloc optique 11 . Finally, with reference to Figure 10, to mask the rear part of the support 29 and its associated technical parts (in particular the fixing interface), an additional mask 40 extending substantially along a vertical plane (along YZ), parallel to the reception face 36 of the housing 1 can be attached around the housing 1 in its rear part leaving visible, for an outside observer located at the front of the vehicle, only the housing and the lens 10 of the optical unit 11 .
Dans une variante et en référence aux figures 11 et 12, le masque peut faire partie intégrante du boîtier 1 ’. Le masque est alors divisé en deux parties 41 et 42 : une première partie 41 vient de matière avec la partie arrière de la demi-coque supérieure 2’ et une deuxième partie 42 vient de matière avec la partie arrière de la demi-coque inférieure 3’. Le masque 41 , 42 s’étend dans un plan YZ parallèle à la face d’accueil 36 du support 29. Alternatively and with reference to Figures 11 and 12, the mask can be an integral part of the housing 1 '. The mask is then divided into two parts 41 and 42: a first part 41 is made in one piece with the rear part of the upper half-shell 2' and a second part 42 is made in one piece with the rear part of the lower half-shell 3 '. The mask 41, 42 extends in a YZ plane parallel to the receiving face 36 of the support 29.
En référence à la figure 12, des moyens de clipsage supplémentaires 43 et 44 sont aménagés, à l’interface mécanique d’assemblage des deux demi-coques 2’ et 3’, respectivement sur les première et deuxième parties de masque 41 et 42. Ils coopèrent entre eux pour assurer le verrouillage de la partie arrière des deux demi- coques 2’ et 3’ et des deux parties de masque 41 et 42 suivant une direction inclinée correspondant à la direction d’assemblage 18 (Fig. 4). Referring to Figure 12, additional clipping means 43 and 44 are provided, at the mechanical assembly interface of the two half-shells 2' and 3', respectively on the first and second mask parts 41 and 42. They cooperate with each other to ensure the locking of the rear part of the two half-shells 2' and 3' and of the two mask parts 41 and 42 in an inclined direction corresponding to the assembly direction 18 (FIG. 4).
Trois pattes de fixation, référencées respectivement 45, 46 et 47, s’étendent suivant la même direction (selon X) perpendiculairement au plan YZ dans lequel s’étendent les deux parties de masque 41 et 42. La patte 45 vient de matière avec la face arrière de la première partie de masque 41 et les deux pattes 46 et 47 viennent de matière avec la face arrière de la deuxième partie de masque 42. On retrouve sensiblement la même répartition des pattes 45, 46 et 47 à l’arrière du boîtier 1 ’ que celles des pattes 30, 31 et 32 de la figure 7. Three fixing lugs, referenced 45, 46 and 47 respectively, extend in the same direction (along X) perpendicular to the YZ plane in which the two mask parts 41 and 42 extend. the rear face of the first mask part 41 and the two legs 46 and 47 are integral with the rear face of the second mask part 42. There is substantially the same distribution of the legs 45, 46 and 47 at the rear of the housing 1 'as those of the legs 30, 31 and 32 of Figure 7.

Claims

REVENDICATIONS
1. Boîtier (1,T) de module optique d’un dispositif d’éclairage et/ou de signalisation d’un véhicule automobile, ledit boîtier (1,T) comportant des première (2,2’) et deuxième (3,3’) parties de forme complémentaire obtenues après moulage par injection d’un matériau thermoplastique et dont au moins une des deux parties (2,2’ ou 3,3’) est pourvue partiellement de zones de métallisation (5), ledit boîtier (1 ,T) comportant un profil de découpe (P) déterminé définissant une interface mécanique d’assemblage (4,4’) des première (2,2’) et deuxième (3,3’) parties l’une sur l’autre ; ladite interface (4,4’) étant agencée sur au moins un des bords d’une des deux parties (2,2’ ou 3,3’) pourvue d’une zone de métallisation (5), au voisinage de la zone de métallisation (5) pour tenir compte des contraintes de moulage et de métallisation. 1. Housing (1, T) of an optical module of a lighting and/or signaling device of a motor vehicle, said housing (1, T) comprising first (2,2') and second (3, 3') parts of complementary shape obtained after injection molding of a thermoplastic material and of which at least one of the two parts (2,2' or 3,3') is partially provided with metallization zones (5), said housing ( 1, T) comprising a determined cutting profile (P) defining a mechanical assembly interface (4,4') of the first (2,2') and second (3,3') parts one on the other ; said interface (4,4') being arranged on at least one of the edges of one of the two parts (2,2' or 3,3') provided with a metallization zone (5), in the vicinity of the metallization (5) to take into account molding and metallization constraints.
2. Boitier(1 ,1 ’) selon la revendication précédente, présentant une forme générale de parallélépipède rectangle ; les première (2,2’) et deuxième (3,3’) parties du boîtier (1,T), en regard l’une de l’autre, comportent respectivement des bords s’étendant sur les deux grandes faces latérales du boîtier (1,T), en regard l’une de l’autre ; lesdits bords appartenant à l’interface mécanique d’assemblage (4,4’) définissant respectivement des rampes d’assemblage (16, 17) coopérant entre elles au moment de l’assemblage des première (2,2’) et deuxième (3,3’) parties selon une direction d’assemblage déterminée (18). 2. Case (1, 1 ') according to the preceding claim, having the general shape of a rectangular parallelepiped; the first (2,2') and second (3,3') parts of the casing (1, T), facing each other, respectively comprise edges extending over the two large side faces of the casing (1,T), facing each other; said edges belonging to the mechanical assembly interface (4,4') respectively defining assembly ramps (16, 17) cooperating with each other when the first (2,2') and second (3 , 3 ') parts according to a determined assembly direction (18).
3. Boîtier (1,T) selon la revendication précédente, dans lequel les première (2,2’) et deuxième (3,3’) parties comportent des moyens de retenues axiales (19-22) et des moyens de retenues latérales (23, 24) coopérant respectivement entre eux pour assurer le verrouillage axial et latéral de l’assemblage des première (2,2’) et deuxième (3,3’) parties du boîtier (1 ,T). 3. Housing (1, T) according to the preceding claim, wherein the first (2,2 ') and second (3,3') parts comprise axial retaining means (19-22) and lateral retaining means ( 23, 24) cooperating respectively with each other to ensure the axial and lateral locking of the assembly of the first (2,2') and second (3,3') parts of the housing (1, T).
4. Boîtier (1,T) selon l’une des revendications précédentes, comportant en outre une interface de fixation (30-32) aménagée sur les première (2,2’) et deuxième (3,3’) parties du boîtier (1,T) ; ladite interface de fixation (30-32) étant apte à fixer le boîtier (1,T) sur un support de module optique suivant une direction longitudinale (X) du boîtier (1 ,T). 4. Housing (1, T) according to one of the preceding claims, further comprising a fixing interface (30-32) arranged on the first (2,2 ') and second (3,3') parts of the housing ( 1,T); said fixing interface (30-32) being able to fix the housing (1, T) on an optical module support in a longitudinal direction (X) of the housing (1, T).
5. Boîtier (T) selon la revendication précédente, comportant en outre, des première (41) et deuxième (42) parties d’extension des première (2’) et deuxième (3’) parties du boîtier (1’) ; les première (41) et deuxième (42) parties d’extension s’étendant dans un même plan (YZ) s’étendant perpendiculairement à un plan médian passant par l’axe longitudinal (X) du boîtier (1’) ; les première (41) et deuxième (42) parties d’extension supportant l’interface de fixation (45-47). 5. Housing (T) according to the preceding claim, further comprising first (41) and second (42) extension parts of the first (2 ') and second (3') housing parts (1'); the first (41) and second (42) extension parts extending in the same plane (YZ) extending perpendicularly to a median plane passing through the longitudinal axis (X) of the casing (1'); the first (41) and second (42) extension parts supporting the attachment interface (45-47).
6. Boîtier (1’) selon la revendication précédente, dans lequel les première (41) et deuxième (42) parties d’extension du boîtier (1’) définisse un masque vis- à-vis d’un support de module optique destiné à recevoir l’interface de fixation (45-47) du boîtier (1’). 6. Housing (1 ') according to the preceding claim, wherein the first (41) and second (42) extension parts of the housing (1') define a mask vis-à-vis an optical module support intended to receive the attachment interface (45-47) of the housing (1').
7. Boîtier (1 ; 1’) selon l’une des revendications précédentes, dans lequel l’ensemble formé par les première (2 ; 2’) et deuxième (3 ; 3’) parties du boîtier (1 ; 1’) définit une coque d’habillage pour un module optique de dispositif d’éclairage et/ou de signalisation ; ladite coque présentant des zones de métallisation (5) et des zones (6) dépourvues de métallisation. 7. Housing (1; 1') according to one of the preceding claims, in which the assembly formed by the first (2; 2') and second (3; 3') parts of the housing (1; 1') defines a covering shell for an optical module of a lighting and/or signaling device; said shell having zones of metallization (5) and zones (6) devoid of metallization.
8. Bloc optique (10, 11) équipé d’un boîtier (1 ; 1’) selon l’une des revendications précédentes. 8. Optical unit (10, 11) equipped with a housing (1; 1 ') according to one of the preceding claims.
9. Dispositif d’éclairage et/ou de signalisation de véhicule automobile comportant un bloc optique (10, 11) selon la revendication précédente.9. Motor vehicle lighting and/or signaling device comprising an optical unit (10, 11) according to the preceding claim.
10. Projecteur de véhicule automobile comportant au moins un bloc optique (10, 11) selon la revendication 8. 10. Motor vehicle headlamp comprising at least one optical unit (10, 11) according to claim 8.
EP22724829.1A 2021-06-11 2022-05-09 Housing for an optical module of a lighting and/or signalling device of a motor vehicle Pending EP4352407A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2106157A FR3123963B1 (en) 2021-06-11 2021-06-11 Optical module housing of a motor vehicle lighting and/or signaling device.
PCT/FR2022/050875 WO2022258901A1 (en) 2021-06-11 2022-05-09 Housing for an optical module of a lighting and/or signalling device of a motor vehicle

Publications (1)

Publication Number Publication Date
EP4352407A1 true EP4352407A1 (en) 2024-04-17

Family

ID=77021529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22724829.1A Pending EP4352407A1 (en) 2021-06-11 2022-05-09 Housing for an optical module of a lighting and/or signalling device of a motor vehicle

Country Status (4)

Country Link
EP (1) EP4352407A1 (en)
CN (1) CN117716165A (en)
FR (1) FR3123963B1 (en)
WO (1) WO2022258901A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2042744A1 (en) 1970-08-28 1972-03-02 Polysius Ag Process for dedusting hot gases
FR2840387B1 (en) * 2002-05-31 2005-01-07 Valeo Vision LIGHTING AND / OR SIGNALING DEVICE FOR A VEHICLE COMPRISING A MASK
FR2944717B1 (en) 2009-04-27 2012-08-17 Peugeot Citroen Automobiles Sa METHOD FOR PARTIALLY METALLIZING A PIECE OF PLASTIC MATERIAL, PARTICULARLY A MASK OF LIGHTING LIGHT AND / OR SIGNALING OF A VEHICLE.
EP2966344B1 (en) * 2014-06-30 2022-01-12 Valeo Vision Optical module with lens for motor vehicle projector headlamp
EP3212992B1 (en) * 2014-10-31 2020-10-07 PSA Automobiles SA Compact optical module for vehicle
ITUA20164515A1 (en) * 2016-06-20 2017-12-20 Automotive Lighting Italia Spa COMPACT LIGHTING DEVICE FOR VEHICLES
FR3084137A1 (en) * 2018-07-17 2020-01-24 Psa Automobiles Sa FLOATING MODULE LIGHTING DEVICE

Also Published As

Publication number Publication date
FR3123963B1 (en) 2023-11-03
WO2022258901A1 (en) 2022-12-15
CN117716165A (en) 2024-03-15
FR3123963A1 (en) 2022-12-16

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