Headlight lens for motor vehicles including a reversible means for retaining a mounting bracket

Abstract

The invention relates to a lens for a motor vehicle headlight comprising a reversible retaining means for a mounting tab. A lens (6) according to the invention is delimited by a wall, intended to be oriented outwards from a motor vehicle headlight; the wall comprises at least one reversible retaining means (12) for a mounting tab. Figure 1

Description

Description Title of the invention: Glass for a motor vehicle headlight comprising a reversible means for holding a fixing lug Technical field to which the invention relates

[0001] — The present invention relates to the technical field of vehicle headlights. automobile, and more particularly a headlight attached to a motor vehicle by at least one fixing lug, presenting improved repairability after breakage of said fixing lug during, for example, an impact with a pedestrian. Technological background

[0002] = A motor vehicle comprises, in a known manner, optical units mounted on the front and rear of the said vehicle. These optical units allow, on the one hand, to illuminate the vehicle's surroundings to improve driver visibility, particularly by night conditions, and, on the other hand, to signal the position of the vehicle to others road users.

[0003] — According to the present invention, an optical unit is composed of light modules intended to illuminate the road, and a projector protecting the light modules from the external environment. More specifically, the term refers to "projector" a box intended to accommodate several light modules, the box being closed by a window allowing the light beams emitted by the modules to pass through bright.

[0004] — Each optical unit comprises one or more fixing lugs allowing fix the optical unit to the vehicle. In a known form of optical unit, a tab frangible mounting allows the projector to be fixed to a vehicle wing using screws and nuts, while being configured to break upon impact, in order to allow the displacement of the optical unit, in order to minimize the risk of injury in the event of impact involving a pedestrian and in order to reduce the risk of breakage of the optical unit, in particular in case of a low-intensity impact. Due to this function, this type of mounting bracket frangible is also referred to as a “fusible” fixing lug.

[0005] — In practice, during an impact with a pedestrian, the lighting or signaling part The light is undamaged, but the mounting bracket has almost completely broken off and must therefore be repaired. To repair the broken mounting bracket, one generally has to com- completely and cleanly cut out the broken leg and then add a sub-leg reported installation screwed onto the projector housing. The repair results in a loss of time and matter.

[0006] — According to another drawback, it is necessary to ensure that this repair is as discreet as possible. possible, because some insurance companies (especially in England) refuse this type of repair due to their visibility to the customer. If nothing is done, then insurance companies increase the insurance premium for this vehicle, which is detrimental and therefore creates a competitive disadvantage. One proposed solution, when the fixing screws are visible, is to add a cover / hood that is clipped from above to hide them. But sometimes it is not possible to have access to the top of the housing, for example when a hood seal takes up all the available space. Another solution is to position the mounting brackets at the rear of the headlight housing. However, the available space is limited, and the interface triangulation on the headlight housing is too limited, and also too far back from the headlight support on the motor vehicle, which results in a risk of poor mechanical / geometrical hold of the headlight on the vehicle. Another drawback is that it is common to have at least two versions of headlight units on a motor vehicle, an entry-level version and a high-end version. For economic reasons, it is preferable that the mounting brackets are common to both versions of the headlight units. But although the lens is often common, this is not the case for the headlight housing, because the light modules differ between the versions (mask style, light functions, etc.). Apart from these internal elements, they affect the volume as well as the shape of the headlight housing. It is therefore sometimes difficult, if not impossible, to have mounting brackets common to these versions of similar appearance. The invention aims to resolve the drawbacks stated above, by proposing a headlight for a motor vehicle, as well as a frangible fixing bracket making it possible to reduce the number of variants of fixing brackets for holding a headlight comprising several versions, while improving the mechanical strength of the headlight and without the fixing brackets being visible after fixing the headlight on a motor vehicle. Subject of the invention For this, the invention proposes a glass for a motor vehicle headlight, delimited by a wall intended to be oriented towards the outside of a motor vehicle headlight, characterized in that the wall of the glass comprises at least one reversible means for holding a fixing lug. As a reminder, the term "projector" refers to a box intended to accommodate one or more light modules, the box being closed by a glass panel allowing the light beams emitted by the light modules to pass through. Remarkably, by proposing the presence of a reversible holding means on a headlight glass, the invention allows a headlight equipped with said glass to be held in a more stable and secure manner by a fixing lug. Indeed, in advantageously allowing the fixing bracket to rest on the headlight glass, offers more favorable triangulation of the fixing points on the headlight, by spacing said fixing points more widely. According to another advantage, by allowing a fixing point on the glass, the space required for the other fixing points on the headlight housing is reduced. As a result, the same fixing bracket can be maintained on headlights of different versions, but having the same glass according to the invention. This reduces the number of variants of fixing brackets and therefore the cost of replacing the fixing brackets. According to another embodiment of the invention, at least one reversible holding means is located on the wall of the window, in a discreet area, and in that the discreet area is invisible from the outside of a motor vehicle equipped with a headlight comprising the window according to the invention. Advantageously, the holding means present on the window is located in an area not visible from the outside of a motor vehicle, in order to preserve the aesthetics of the motor vehicle. According to another embodiment of the invention, the wall comprises a front face, intended to face the road, and a side face forming an angle with the front face, and in that the discrete zone extends at least partly on the front face and / or at least partly on the side face of the first wall. Preferably, the angle formed between the front face and the side face of the glass is between 30° and 140°, preferably between 80° and 120°. According to another embodiment of the invention, at least one reversible holding means is formed by a cavity capable of receiving and holding an appendage. Preferably, the cavity comprises a thread so as to allow the screwing of a rod which is also threaded. The present invention also relates to a headlight for a motor vehicle comprising a housing, the housing delimiting an open cavity intended to accommodate one or more light modules, a rear face of the housing comprising at least one reversible means for holding a fixing lug, the housing is closed by a glass as described above. Preferably, the housing comprises at least two reversible holding means in order to allow the holding of a fixing lug by triangulation of the holding points. The present invention also relates to a fixing bracket for a projector as defined above, the fixing bracket comprises at least two reversible holding means, a first reversible holding means intended to cooperate with a reversible holding means located on the first wall of the glass and a second reversible means intended to cooperate with a reversible holding means located on a rear face of the housing. Preferably, the fixing tab comprises a first branch and a second branch, the branches are connected so as to form a "U" or substantially a "U", and the first holding means are present at one end of the first branch, and the second holding means are present at one end of the second branch. According to another embodiment of the invention, the fixing lug comprises a third branch supporting a third reversible holding means. According to another embodiment of the invention, between, on the one hand, the first reversible holding means and the second reversible holding means and, on the other hand, the third reversible holding means, there is a frangible zone configured to create a rupture zone in the event of an impact. The invention also relates to a motor vehicle comprising a headlight as described above, the headlight being held to the motor vehicle by means of a fixing bracket also described above. Of course, the various features, variants and embodiments mentioned above can be combined with each other in various combinations, to the extent that they are not incompatible or mutually exclusive. Description of figures The invention will be better understood from the following description, which relates to preferred embodiments, given as non-limiting examples, and explained with reference to the appended schematic drawings, in which: [Fig.1] illustrates a perspective and partial view of a projector according to the invention; [Fig.2] illustrates a perspective view of a fixing lug according to the invention; [Fig.3] illustrates a perspective and partial view of the projector represented by [Fig.1], on which is mounted a fixing bracket represented by [Fig.2]. Detailed description of the invention As a reminder, the invention proposes a headlight for a motor vehicle, as well as a frangible fixing bracket making it possible to reduce the number of variants of fixing brackets for holding a headlight comprising several versions, while improving the mechanical strength of the headlight and without the fixing brackets being visible after fixing the headlight on a motor vehicle. [Fig. 1] illustrates a non-limiting embodiment of a projector 2 according to the invention. As mentioned previously, a projector according to the invention designates a housing 4, intended to accommodate several light modules. The housing is closed by a glass 6 at least partly transparent and / or translucent. The window 6 has a front face 8, intended to face the road, and a front face lateral 10 forming an angle with the front face. Preferably, the angle formed between these two faces is between 30° and 140°, more particularly between 80° and 120°, or between 80° and 100°. Remarkably, a reversible holding means 12 is present and visible on the lateral face 10. According to the present example, the reversible holding means is a stud 14 hollowed out in its center. The internal wall of the stud can be threaded to allow the screwing of a holding screw. According to an alternative embodiment, not shown, the internal wall can be smooth to allow the forceful insertion of an appendage into the stud 14. In a known manner, the housing 4 comprises at least two reversible holding means 18 on a rear face 16, identical or similar to the reversible holding means 12 present on the glass 6. The invention also relates to a fixing lug 20 visible in [Fig. 2], intended to be held on the projector 2 of [Fig. 1]. More precisely, the fixing lug 20 is composed of three branches. A first branch 22 and a second branch 24 are linked together so as to form a “U” or substantially a “U”. The first branch 22 comprises at its free end two first reversible holding means 22A. According to the present example, the first reversible holding means 22A are composed of a passage through the branch, receiving a threaded screw 26 intended to cooperate with a reversible holding means 18 present on the rear face 16 of the housing. The second branch 24 of the fixing lug comprises at its free end a part of a second reversible holding means 24A, namely like the first branch 22, a passage 28 intended to accommodate a screw in order to ensure its holding by the reversible holding means 12 present on the lateral face 10 of the glass, as illustrated by [Fig.3]. The fixing lug 20 comprises a third branch 30 extending parallel or substantially parallel to the other branches, so that the fixing lug is substantially in the shape of a “Y”. The third branch 30 also comprises a third reversible holding means 30A, in the form of a passage 28, intended to allow it to be held on the chassis of a motor vehicle by means of a screw or the like. The fixing lug also comprises a frangible zone 32, configured to create a rupture zone in the event of an impact, located between the third holding means 30A and the other holding means 22A and 24A. Both the projector and the mounting bracket can be formed from the same materials, preferably from thermoformable polymers. According to a variant embodiment not illustrated, the reversible fixing means present on the ice may be present on the front face 8 of said ice, and extend perpendicularly or substantially perpendicularly to said front face.

Claims

Claims

1. Glass (6) for a motor vehicle headlight, delimited by a wall intended to be oriented towards the outside of a projector for motor vehicle, characterized in that the wall of the glass (6) comprises at least one reversible holding means (12) of a tab of fixation.

2. Ice (6) according to claim 1, characterized in that at least one reversible holding means (12) is located on the wall of the ice (6), in a discrete area, and in that the discrete area is invisible from the exterior of a motor vehicle equipped with a headlight (2) comprising the ice (6) according to the invention.

3. Ice (6) according to claim 1 or 2, characterized in that the wall has a front face (8), intended to face the road, and a side lateral (10) forming an angle with the front face (8), and in that the area discrete extends at least partly over the front face (8) and / or at least partly on the lateral face (10) of the wall.

4. Ice (6) according to one of claims 1 to 3, characterized in that at at least one reversible holding means (12) is formed by a cavity able to accommodate and maintain an appendix.

5. Headlight (2) for a motor vehicle comprising a housing (4), the housing delimiting an open cavity intended to accommodate one or more light modules, a rear face (16) of the housing comprising at least a reversible holding means (18) of a fixing lug, characterized in that the housing (4) is closed by a glass (6) according to one of the re- dications | to 4.

6. Fixing bracket (20) for a motor vehicle headlight (2) according to claim 5, characterized in that the fixing lug (20) comprises at least two reversible holding means (22A, 24A), a first reversible holding means (24A) intended to cooperate with a reversible holding means (12) located on the wall of the ice (6) and a second reversible holding means (22A) intended to cooperate with a reversible holding means (18) located on a rear face (16) of the case (4).

7. Fixing lug (20) according to claim 6, characterized in that it comprises a first branch (22) and a second branch (24), said branches are linked so as to form a “U” or substantially a “U”, and in that the first holding means (24A) is present at one end of the first branch, and in that the second holding means (22A) is present at a end of the second branch.

8. Fixing lug (20) according to claim 7, characterized in that it comprises a third branch (30) supporting a third means of reversible maintenance (30A).

9. Fixing lug (20) according to claim 8, characterized in that that between, on the one hand the first reversible holding means (24A) and the second reversible holding means (22A) and, on the other hand, the third reversible holding means (30A), there is a zone frangible (32) configured to create a rupture zone in the event of an impact.

10. Motor vehicle characterized in that it comprises a headlight (2) according to claim 5, the projector (2) is held on the vehicle au- car by means of a fixing lug (20) according to one of the claims 6 to 9.