Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
  • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
  • F21V17/104—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening using feather joints, e.g. tongues and grooves, with or without friction
• • 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
  • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
  • F21S41/39—Attachment thereof
  • F21S41/395—Attachment thereof specially adapted to extension reflectors
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
  • F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
  • F21S43/51—Attachment thereof

Definitions

• the invention relates to motor vehicle light units providing at least two photometric functions.
• Certain motor vehicle light units comprise a main wall which defines, on the one hand, a reflector providing a first photometric function, and, on the other hand, at least a portion of an area (possibly another reflector) which is located at side of the reflector and which at least partially provides a second photometric function.
• These optical blocks also comprise an ice placed in front of at least one reflector and possibly a mask interposed between the ice and at least one reflector.
• photometric function is used herein to mean a function that makes it possible to orient (for example reflect forward) and / or to color the light that is emitted by a lamp (internal).
• mask means a part that defines in particular a part of the style of the optical block. It is usually metallized and placed behind the ice so that at least its front part is visible from the outside.
• an optical unit intended to be part of a motor vehicle, and comprising at least one main wall defining a portion of a first reflector, intended to ensure at least partially a first photometric function, and at least one part of an area, situated next to the part of the first reflector and intended to at least partially ensure a second photometric function.
• This optical block is characterized by the fact:
• An optical unit according to the invention may comprise other characteristics that can be taken separately or in combination, and in particular:
• its second fixing means can be arranged in the form of minus two stamped elastic feet
• these elastic tabs may comprise at least one local deformation, for example semi-spherical;
• At least one of the resilient tabs may comprise a first concave-type local deformation and a second convex type local deformation
• At least one of the first fixing means can be arranged in the form of a housing adapted to receive and cooperate with a second fixing means; > a housing can be defined in a bracket which is secured to the main wall;
• a housing can be defined in the main wall
• This housing may then comprise first and second faces opposite one another, the first face being provided with at least one projection oriented towards the second face and intended to press one of the second fixing means towards the second face;
• the metal plate may comprise four second fastening means adapted to cooperate with four first fixing means;
• the main wall may comprise at least one auxiliary housing.
• the metal plate may comprise at least one positioning tab adapted to be housed in the corresponding auxiliary housing so as to pre-position the metal plate relative to the main wall in two substantially perpendicular directions, before cooperating together the first and second fixing means;
• the metal plate may comprise two positioning tabs adapted to be housed in two corresponding auxiliary housings of the main wall;
• the metal plate can be arranged to participate at least in the first photometric function.
• FIG. 1 schematically illustrates, in a perspective view (front side), a part of an exemplary embodiment of an optical block according to the invention, before joining a functional metal separation plate,
• FIG. 2 schematically illustrates, in a perspective view (front side), the optical block of FIG. 1 after joining an exemplary embodiment of a functional metal separation plate;
• FIGS. 3 and 4 schematically illustrate, in perspective views on two opposite sides, the embodiment of metal plate of FIG. 2,
• FIG. 5 schematically illustrates, in a perspective view (front side), a first zone of the metal plate of FIGS. 3 and 4 in which a first elastic tab is defined;
• FIG. 6 schematically illustrates in a perspective view (front side), a first portion of the main wall of Figures 1 and 2 in which is defined a first fixing lug cooperating with the first elastic tab of Figure 5,
• FIG. 7 schematically illustrates, in a perspective view (front side), a second zone of the metal plate of FIGS. 3 and 4 in which a second elastic tab is defined
• FIG. 8 schematically illustrates, in a perspective view (front side), a second part of the main wall of FIGS. 1 and 2 in which is defined a first housing intended to house the second elastic tab of FIG. 7,
• FIG. 9 schematically illustrates, in a perspective view (front side), the second part of the main wall of FIG. 8 once the second elastic tab of FIG. 7 is housed in its first housing;
• FIG. 10 schematically illustrates, in a perspective view (front side), a third portion of the main wall of FIGS. 1 and 2 in which is defined a second housing housing a third elastic tab defined in a third zone of the metal plate; of the Figures 3 and 4,
• FIG. 11 illustrates schematically, in a perspective view, a fourth elastic tab defined in a fourth zone of the metal plate of FIGS. 3 and 4;
• FIG. 12 schematically illustrates, in a perspective view (front side), a fourth portion of the main wall of Figures 1 and 2 in which is defined a third housing housing the fourth elastic tab of Figure 1 1,
• FIG. 13 schematically illustrates, in a perspective view (rear side), a fifth zone of the metal plate of FIGS. 3 and 4 in which two positioning tabs are defined, and
• FIG. 14 schematically illustrates, in a perspective view (rear side), a fifth portion of the main wall of FIGS. 1 and 2 in which two auxiliary housings housing respectively the two positioning tabs of FIG. 13 are defined.
• the object of the invention is to propose an optical block (BO) intended to be implanted in a motor vehicle and providing at least two neighboring photometric functions.
• BO optical block
• the optical unit is a headlight (or front projector) intended to be installed in the front of a motor vehicle.
• the invention is not limited to this type of implantation. It also relates to certain optical blocks, such as signal rear lamps, intended to be installed in the rear of a motor vehicle.
• Such an optical block BO comprises in particular a main wall PP, a metal plate PM functional separation, a mirror (not shown), and a possible mask (not shown).
• the main wall PP defines a cavity subdivided into at least two parts.
• the first part constitutes a part of a first reflector R1 intended to provide a first photometric function
• the second part constitutes at least a part of an area R2 situated next to the first reflector R1 and intended to ensure at least partially a second photometric function.
• the portion of the main wall PP which defines the first reflector R1 comprises a central opening 01 for receiving a transmitting part of a lamp (or bulb) L1.
• this main wall portion PP comprises an internal face FIP which is shaped and processed (for example metallized) so as to reflect forwards the light which is emitted by the lamp L1.
• This predetermined reflection function (and therefore shaping light) is at least partially the first photometric function of the first reflector R1.
• the zone R2 which is defined by the main wall PP constitutes for example at least a part of a second reflector. As illustrated in FIGS. 1 and 2, this zone (or second reflector) R2 comprises a central opening 02 intended to receive a transmitting part of a lamp (or bulb) L2.
• the inner face FIP of the main wall portion PP which at least partially defines the second reflector R2 is shaped and processed (for example metallized) so as to reflect forwards the light which is emitted by the lamp L2.
• This predetermined reflection function (and therefore the shaping of the light) constitutes at least partially the second photometric function of the second reflector (or zone) R2.
• the term "internal face” the FIP face of the main wall PP which defines the interior of the aforementioned cavity.
• external face refers to the FEP face (see FIG. 13) of the main wall PP which delimits the outside of the aforementioned cavity.
• the cavity houses a metal plate PM in a position which ensures separation of the first and second photometric functions.
• the fastening of this metal plate PM to the main wall PP is by stress plating in a first direction D1 by cooperation of the first fixing means MF1j of the main wall PP and second fixing means MF2j of the metal plate PM to which we will return later.
• This first direction D1 is substantially parallel to the vertical direction once the optical block BO installed in a motor vehicle.
• the metal plate PM is arranged to participate at least in the first photometric function. It can also and possibly participate in the second photometric function.
• the metal plate PM may for example be stamped so as to define steps or stair steps each having a chosen inclination adapted to the photometric function at ensure.
• the metal plate PM comprises a rear portion PRP, which is placed in the bottom of the cavity (in the vicinity of the central opening 01), and a front portion PVP, which is located just before the inner face of the mask M (when it is planned) or just before the inner face of the ice (in the absence of a mask).
• the ice is usually placed in front of at least the first reflector R1 and that the optional mask is interposed between the ice and at least the second reflector R2.
• the ice and the possible mask M are secured to the main wall PP.
• the main wall PP and the metal plate PM respectively comprise first MF1j and second MF2j fixing means which cooperate together, for the purpose of securing them to one another by plating. under stress, without the PVP front portion of the metal plate PM is in contact with the inner face of the mask or ice.
• first MF1j and second MF2j fixing means which cooperate together, for the purpose of securing them to one another by plating.
• the second fixing means MF2j can be arranged in the form of at least two pressed elastic tabs.
• the use of elastic tabs is particularly advantageous because it makes it possible to catch up possible games induced by local dimensional variations.
• the metal plate PM could comprise two, three or five, or even more than five second attachment means MF2j.
• the four second fixing means MF2j are respectively defined on the peripheral edge of the metal plate PM, in four different zones Zj.
• the first Z1 and second Z2 areas are located in the front portion PVP of the metal plate PM, while the third Z3 and fourth Z4 areas are located in the rear portion PRP of the metal plate PM.
• the respective orientations and shapes of the elastic tabs MF2j depend on the locations where the second corresponding fastening means MF1j of the main wall PP are defined.
• the first elastic tab MF21 (see FIGS. 3, 5 and 6) is folded towards the lower face F1 of the metal plate PM, which is oriented towards the second reflector R2, while the second MF22 (see figures 3, 4 and 7), third MF23 (see figures 3, 4 and 10), and fourth MF24 (see figures
• elastic tabs are inclined on the side of the upper face FS of the metal plate PM, which is oriented towards the first reflector R1.
• the elastic tabs MF2j may comprise at least one local deformation DL, preferably semi-spherical (for example half-spheres), intended to promote their plating. against a part of the corresponding first fixing means MF1j.
• This local deformation DL is obtained by stamping.
• the first MF21, second MF22 and third MF23 elastic tabs each comprise a local deformation (semi-spherical) DL concave or convex type
• the fourth elastic tab MF24 comprises a first local deformation (semi -special) DL concave type and a second deformation local (semi-spherical) DL convex type (for stressing of the metal plate PM in the first direction D1 in two opposite directions).
• the number of local deformations of each elastic tab MF2j may be equal to one or two or even three.
• other forms can be envisaged for local deformations DL.
• they can be pyramidal (possibly truncated), for example.
• the local deformations DL may possibly vary from one elastic tab MF2j to another MF2j '.
• the first fastening means MF1j are arranged to cooperate respectively with the different (at least two) second fixing means MF2j corresponding.
• the first fixing means MF1j may advantageously be in the form of housings (or cavities). This makes it possible to mask at least some of the elastic tabs MF2j, thus making them invisible from outside the optical block BO.
• the first fixing means MF1j can be arranged in the form of a housing defined in a fixing lug PF which is secured to the main wall PP.
• the main wall PP comprises a first zone in which a fastening tab PF is defined. provided at its free end (front) of a housing MF1 1 defining the first fixing means and for accommodating the first elastic tab MF21.
• the first housing MF11 is here open on three sides to facilitate the introduction of the first elastic lug MF21.
• At least one of the first fixing means MF1j may be arranged in the form of a housing defined in the main wall PP. This is the case of the second MF12 (see FIGS. 8 and 9), the third MF13 (see FIG. 10), and the fourth MF14 (see FIG. 12), the first attachment means in the nonlimiting example illustrated.
• the main wall PP comprises: a second zone in which is defined a second housing MF12 defining the second first fixing means and intended to house the second elastic tab MF22 (see FIGS. 8 and 9),
• a third zone in which is defined a third housing MF13 defining the third first fixing means and intended to house the third elastic tab MF23 (see FIG. 10),
• the second housing MF12 is here open on one side. It includes first F1 and second F2 faces facing each other. As illustrated, the first face F1 is preferably disoriented with respect to the second face F2 so as to push the second elastic lug MF22 to this second face F2 and thus press against the latter substantially in the first direction D1.
• the first (upper) face F1 is provided with at least one projection (for example a counter shape) S which is oriented towards the second (lower) face F2 and intended to to strengthen the plating of the second elastic tab MF22 to this second face F2.
• the first face (upper) F1 is provided with two projections (here counter shapes) S so as to promote the quality of the plating of the second elastic lug MF22 against the second face F2 of the second housing MF12.
• the third housing MF13 is here open on three sides to facilitate the introduction of the third elastic tab MF23. It includes first F1 and second F2 faces facing each other. As illustrated, the first face F1 is preferably disoriented with respect to the second face F2 so as to push the third elastic lug MF23 to this second face F2 and thus press against the latter substantially in the first direction D1.
• the first (upper) face F1 is provided with a single projection S which is oriented towards the second (lower) face F2 and intended to reinforce the plating of the third elastic lug MF23 towards this second face F2. In fact, it is the local deformation DL of the third elastic tab MF23 which is forced to contact the second face F2.
• the first (upper) face F1 of this third housing MF13 could be provided with two projections S, as in the case of the second housing MF12.
• the fourth MF14 housing is here open on one side. It includes first F1 and second F2 faces facing each other. As illustrated, the first face F1 is preferably disoriented with respect to the second face F2 so as to push the fourth elastic tab MF24 to this second face F2 and thus press against the latter substantially in the first direction D1.
• the first (upper) face F1 is provided with a single projection S which is oriented towards the second (lower) face F2 and intended to reinforce the plating of the fourth elastic lug MF24. towards this second face F2. In fact, it is the local deformation DL of the fourth elastic tab MF24 which is forced to contact the second face F2.
• the first (upper) face F1 of this fourth housing MF14 could be provided with two projections S, as in the case of the second housing MF12.
• the metal plate PM is secured to the main wall PP by stress plating in the first direction D1, without gluing, clipping or welding, which is particularly advantageous. It will be noted, as illustrated without limitation in FIGS. 3, 4, 13 and
• the main wall PP comprises at least one auxiliary housing LA and the metal plate PM comprises at least one positioning tab MPk intended to be housed in a corresponding auxiliary housing LA.
• the auxiliary housing LA are through openings. But, this is not mandatory.
• the invention offers several advantages, among which:
• the metal plate no longer induces stress on the ice and / or the mask because it is no longer secured to that (s),
• the metal plate can be shaped (embossed) so as to participate in at least one photometric function, because it is made of metal (by stamping) and not by molding / demolding, - the metal plate being visible from the outside of its optical block, it can participate in the style of the latter.

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• 2009
  • 2009-01-16 FR FR0950271A patent/FR2941283B1/fr not_active Expired - Fee Related
  • 2009-12-21 EP EP09806095.7A patent/EP2379941B1/de not_active Not-in-force
  • 2009-12-21 CN CN200980158167.8A patent/CN102356272B/zh not_active Expired - Fee Related
  • 2009-12-21 BR BRPI0919990A patent/BRPI0919990A2/pt not_active IP Right Cessation
  • 2009-12-21 ES ES09806095.7T patent/ES2531636T3/es active Active
  • 2009-12-21 WO PCT/FR2009/052652 patent/WO2010081956A1/fr active Application Filing

Non-Patent Citations (1)

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