EP1773648A1 - Motor vehicle font unit - Google Patents

Motor vehicle font unit

Info

Publication number
EP1773648A1
EP1773648A1 EP05788567A EP05788567A EP1773648A1 EP 1773648 A1 EP1773648 A1 EP 1773648A1 EP 05788567 A EP05788567 A EP 05788567A EP 05788567 A EP05788567 A EP 05788567A EP 1773648 A1 EP1773648 A1 EP 1773648A1
Authority
EP
European Patent Office
Prior art keywords
axis
bumper skin
along
front face
sleeve
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.)
Withdrawn
Application number
EP05788567A
Other languages
German (de)
French (fr)
Inventor
Didier Bierjon
Raphaël Mary
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.)
Flex N Gate France SAS
Original Assignee
Faurecia Bloc Avant 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 Faurecia Bloc Avant SAS filed Critical Faurecia Bloc Avant SAS
Publication of EP1773648A1 publication Critical patent/EP1773648A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/082—Engine compartments
    • B62D25/084—Radiator supports

Definitions

  • the present invention relates to a set of front block of a motor vehicle.
  • the front blocks of motor vehicles generally comprise a front face which has a central part and two side parts, a bumper, and a bumper skin forming fairing of the bumper, two beams each extending from the part central to which it is fixed to a respective lateral part, and forming support members of said bumper skin, and two optical blocks.
  • Each optical block is supported by a respective lateral part and has a lateral peripheral part adapted to cooperate with a complementary recess of a respective front wing part.
  • a major difficulty encountered by car manufacturers is to accurately position the optical blocks with respect to the appearance elements constituted by the wings and the bumper skin.
  • This adjustment is important because a lack of surface continuity of the visible part of the optical block, that is to say of the ice, the corresponding wing, and the bumper skin significantly degrades the aesthetic quality. of the vehicle.
  • a precise adjustment of the position of the optical block with respect to the wing and the bumper skin is difficult to maintain between the mounting operation of the optical blocks on the front face and the assembly operation of the equipped front block on the body of the motor vehicle.
  • each optical unit is generally fixed at four points on the front face which constitutes a rigid piece. After assembly of each optical unit, they are mounted on the vehicle body and fixed on each of these optical blocks the front end of the corresponding body wing.
  • the car manufacturer realizes the adjustment of the position of the optical block relative to the wing, by acting on two points of attachment of the optical block on the front face.
  • document EP-A-1 232 932 discloses a motor vehicle front block assembly comprising a front face, which has a central part and two lateral parts, a bumper skin, and two flexible beams. extending laterally and forming bumper skin supports, each of which has a first end connected to the central portion and a second end for connection to a vehicle body wing front portion, and two blocks optical, each of which is rigidly attached to a respective beam.
  • the structure described in this document allows automatic and permanent positioning of the visible contours of the optical blocks relative to the corresponding wing ends and the bumper skin.
  • this structure ensures precise relative positioning of the wingtips and the bumper skin.
  • some bumper skins have shapes that surround each optical block on part of its inner perimeter so that it is necessary to be able to catch the play between the bumper skin and the optical blocks at the level of this inner part.
  • the object of the invention is therefore to propose a motor vehicle front block assembly in the form of a pre-assembled module, the various elements of which consist of the optical blocks and the bumper skin, can be automatically adjusted. and locked in position, to ensure continuity of appearance between them. .
  • the subject of the invention is therefore a set of front block of a motor vehicle comprising:
  • a bumper skin - two flexible beams extending laterally, a first end of which is connected to the central portion of the front face and a second end is connected to a front portion of the body wing, and
  • the bumper skin is fixed on the first end of each flexible beam and each first end is adjustable along a first axis Z and according to a second Y axis on the central part of the front face for an adjustment of each optical block relative to the bumper skin.
  • the adjustment according to the first axis Z of the first end of each beam is obtained by indexing means comprising a sleeve integral with the front face and extending perpendicularly to this front face and a finger provided on the beam and extending perpendicular to this beam, and capable of axial sliding in said sleeve, the finger being blocked by the sleeve along the first axis Z,
  • the sleeve comprises means for blocking the finger along a third axis X
  • each beam comprises indexing means along the first axis Z and along the third axis X of the bumper skin
  • the indexing means of the bumper skin are formed by at least one recessed portion formed on the upper part of the beam and extending transversely in the general direction of the beam and by at least one projecting portion. , complementary to the upper part of the bumper skin,
  • each beam comprises a bending zone disposed between the first end and the fixing of the corresponding optical block, and the bending zone is formed by a substantially vertical notch formed on said beam.
  • FIG. 1 is a schematic perspective view of a front block assembly, according to the invention
  • FIG. 2 is a diagrammatic perspective exploded view of the various elements composing the assembly of front block, according to the invention
  • FIG. 3 is a schematic perspective view of the front face of the front block assembly, according to the invention.
  • FIG. 4 is a schematic perspective view of a flexible beam of the assembly of front block, according to the invention.
  • FIGs. 1 and 2 there is shown schematically a front portion of a motor vehicle comprising a front block assembly 1 partially shown, a front end 2a of a body wing 2 and a front end 3 of a hood.
  • Figs. 1 and 2 as well as Figs. 3 and 4, have been oriented along three axes X, Y and Z which correspond to the usual orientation of a motor vehicle, namely respectively the longitudinal axis X oriented in the forward direction, the transverse axis Y oriented from right to left, from the point of view of the driver, and the vertical axis Z oriented from bottom to top. All terms used in the remainder of the description, which may indicate a direction or a positioning, must be understood with reference to this axis system.
  • the front part of the vehicle shown in Figs. 1 and 2 is symmetrical or quasi-symmetrical with respect to a vertical median plane of the vehicle so that, for the sake of clarity, the description which follows will be made for one side of this front part, the other side being identical.
  • the front block assembly 1 of the vehicle comprises a substantially rigid structure constituted by a front face designated by the general reference 10 and which has a central portion 11 having the general shape of a frame and, on each side, a part 12, as shown in FIG. 3.
  • the front block assembly 1 also comprises a bumper skin 15, made for example of a piece of plastic material, disposed over the entire width of the front face 10, as shown in FIG. 1, protruding laterally from the lateral portions 12 of the front face 10, and applying on an edge of the front end 2a of the wing 2 in coincidence therewith.
  • a bumper skin 15 made for example of a piece of plastic material, disposed over the entire width of the front face 10, as shown in FIG. 1, protruding laterally from the lateral portions 12 of the front face 10, and applying on an edge of the front end 2a of the wing 2 in coincidence therewith.
  • the front block assembly 1 further comprises, on each lateral side, an optical unit 20 mounted on the front face 10 in complementary shapes formed in the wing 2, the hood 3 and the bumper skin 15. , below an upper extension 13 of the front face 10 and above an upper edge 16 of the bumper skin 15, as shown in Figs. 1 and 2.
  • the optical unit 20 is fixed on the lateral extension 13 for example by means of two tabs 21.
  • the front block assembly 1 also comprises, on each lateral side, a flexible and curved beam generally designated 30 and which is shown on a larger scale in FIG. 4.
  • Each flexible beam 30 extends substantially laterally in the direction of the bumper skin 15 and has a central portion 31 whose front face is provided with a first pin 32 for cooperating with a first lower leg 22 of the optical unit 20 for indexing this optical unit 20 along the X and Z axes and a second pin 33 intended to cooperate with a second leg lower 23 of the optical unit 20 for indexing along the XYZ axes of this optical unit 20.
  • the flexible beam 30 has a first end 34 connected to the central portion 11 of the front face 10 and on which is also fixed the upper edge 16 of the bumper skin 15 to obtain a positioning along the Z axis of this skin Bumper 15.
  • the flexible beam 30 has a second end 35 connected to the front portion 2a of the body wing 2, as shown in FIG. 1.
  • the central portion 31 of the flexible beam 30 has, on its lower edge, a tab 36 for attachment to the central portion 11 of the front face 10.
  • each flexible beam 30 is adjustable along a first axis Z and along a second axis Y on the central portion 11 of the front face 10 for an adjustment of each optical block 20 relative to the bumper skin 15.
  • indexing means comprising a hollow sleeve 14, which, in the embodiment shown in FIG. 3, is secured to the central portion 11 of the front face 10 and extends perpendicularly to the front face 10 projecting from the latter rearwardly along its longitudinal axis oriented substantially along the longitudinal axis X of the vehicle.
  • This sleeve 14 has an elongate hole 14a in the direction X of the axis of the sleeve 14.
  • the hole 14a has a rectangular section whose longer sides are horizontal.
  • the hole 14a may have other shapes, such as an oblong shape.
  • the indexing means comprise a finger 37 provided on the beam 30 and extending perpendicular to this beam, towards the rear of the motor vehicle, along its longitudinal axis oriented substantially along the longitudinal axis X of this vehicle .
  • the finger 37 is capable of axial sliding in the orifice 14a of the hollow sleeve 14. In the embodiment shown in FIG.
  • the finger 37 has a rectangular section whose height h1 is substantially equal to the height h2 of the hole 14a of the sleeve 14 and whose width 11 is smaller than the width 12 of this hole 14a, so as to allow the finger 37 and consequently the corresponding flexible beam 31 to be able to move along the transverse axis Y, all being blocked along the axis Z.
  • Each sleeve 14 also comprises means, not shown, for locking the finger 37 corresponding to the axis X which permanently secures, with a possibility of disassembly, the finger 37 and the sleeve 14.
  • These locking means are constituted by any suitable device of conventional type, such as for example a pair screw / nut or a pin.
  • each flexible beam 30 comprises indexing means along the X and Z axes of the bumper skin 15.
  • These indexing means represented in particular in FIG. 4 comprise at least one recessed portion 38 formed on the upper part of the central portion 31 of the beam 30. In the embodiment shown in this figure, said recessed portion is formed of at least one gutter 38 and for example two gutters 38, which extend transversely in the general direction of the beam 30.
  • indexing means comprise at least one complementary projecting portion formed in the upper part of the bumper skin and which, in the embodiment shown in FIGS. 1 and 2, is constituted by the upper edge 16 of the bumper skin 15, so as to attach this bumper skin 15 to each beam 30, with a possibility of relative movement of adjustment according to the general direction of this beam 30, that is to say along the axis Y.
  • Each flexible beam 30 optionally comprises a flexion zone 40 disposed between the first end 34 and the central portion 31 and more particularly between the first end 34 of attachment the bumper skin 15 and the central portion 31 on which is mounted the corresponding optical unit 20. This bending zone is formed for example by a notch 40 substantially vertical.
  • This notch 40 is particularly useful when the end portion 2a of the wing 2 attached to the second end 35 of the corresponding beam 30 is rigid.
  • the configuration of the different elements composing the assembly of front block according to the invention does not impose a particular order of assembly between them, and for example the optical blocks can be mounted on the flexible beams before the assembly of these ci on the front or they can be mounted after.
  • the front block assembly according to the invention therefore makes it possible to obtain an optimal aesthetic quality of the front part of the vehicle, which is constant in time and without the need for additional recovery and adjustment operations, subsequent to the assembly of the vehicle. vehicle.
  • the elasticity of the side portions of the front block assembly according to the invention provided by the elasticity of each flexible beam allows during the assembly of this assembly on the vehicle body, a slight deformation of these side parts. by tightening inwards. This facilitates the use of mounting templates that allow the front block to be accurately and automatically attached to the vehicle body.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

The invention concerns a motor vehicle front unit assembly (1) comprising a rigid front surface (10), a bumper skin (15), two flexible beams (30) extending laterally, whereof one first end is connected to the front surface (10) and a second end is connected to a front part (2a) of a body fender (2), and two optical units (20). The bumper skin (15) is fixed on the first end of each flexible beam (30) and each end is adjustable along a first axis Z and a second axis Y on the front face (10) to adjust each optical unit (20) relative to the bumper skin (15).

Description

Ensemble de bloc-avant de véhicule automobile. Set of front block of motor vehicle.
La présente invention concerne un ensemble de bloc-avant de véhicule automobile.The present invention relates to a set of front block of a motor vehicle.
Les blocs avant de véhicules automobiles comportent généralement une face avant qui présente une partie centrale et deux parties latérales, un pare-chocs, et une peau de pare-chocs formant carénage de ce pare-chocs, deux poutres s'étendant chacune de la partie centrale à laquelle elle est fixée vers une partie latérale respective, et formant des organes de support de ladite peau de pare-chocs, et deux blocs optiques. Chaque bloc optique est supporté par une partie latérale respective et présente une partie périphérique latérale adaptée pour coopérer avec un évidement complémentaire d'une partie avant d'aile respective.The front blocks of motor vehicles generally comprise a front face which has a central part and two side parts, a bumper, and a bumper skin forming fairing of the bumper, two beams each extending from the part central to which it is fixed to a respective lateral part, and forming support members of said bumper skin, and two optical blocks. Each optical block is supported by a respective lateral part and has a lateral peripheral part adapted to cooperate with a complementary recess of a respective front wing part.
Une difficulté majeure rencontrée par les constructeurs automobiles consiste à positionner de façon précise les blocs optiques par rapport aux éléments d'aspect constitués par les ailes et la peau de pare-chocs.A major difficulty encountered by car manufacturers is to accurately position the optical blocks with respect to the appearance elements constituted by the wings and the bumper skin.
Cet ajustage est important du fait qu'un défaut de continuité de surface de la partie visible du bloc optique, c'est à dire de la glace, de l'aile correspondante, et de la peau de pare-chocs dégrade sensiblement la qualité esthétique du véhicule. En outre, un réglage précis de la position du bloc optique par rapport à l'aile et à la peau de pare-chocs est difficile à maintenir entre l'opération de montage des blocs optiques sur la face avant et l'opération d'assemblage du bloc-avant équipé sur la caisse du véhicule automobile.This adjustment is important because a lack of surface continuity of the visible part of the optical block, that is to say of the ice, the corresponding wing, and the bumper skin significantly degrades the aesthetic quality. of the vehicle. In addition, a precise adjustment of the position of the optical block with respect to the wing and the bumper skin is difficult to maintain between the mounting operation of the optical blocks on the front face and the assembly operation of the equipped front block on the body of the motor vehicle.
Ces difficultés ont été accrues par la généralisation des blocs optiques monoblocs intégrant la fonction clignotant, alors qu'auparavant la partie formant le clignotant était ajustable par rapport à la partie principale du bloc optique, de sorte qu'il était relativement aisé de compenser des tolérances de positionnement.These difficulties have been increased by the generalization of monobloc optical units integrating the flashing function, whereas previously the part forming the flashing was adjustable relative to the main part of the optical unit, so that it was relatively easy to compensate for tolerances positioning.
Dans le cas d'optiques monoblocs intégrant la fonction de clignotant, chaque bloc optique est généralement fixé en quatre points sur la face avant qui constitue une pièce rigide. Après assemblage de chaque bloc optique, on les monte sur la caisse du véhicule et on fixe sur chacun de ces blocs optiques l'extrémité avant de l'aile de carrosserie correspondante.In the case of monobloc optics incorporating the flashing function, each optical unit is generally fixed at four points on the front face which constitutes a rigid piece. After assembly of each optical unit, they are mounted on the vehicle body and fixed on each of these optical blocks the front end of the corresponding body wing.
Dans une opération suivante, le constructeur automobile réalise le réglage de la position du bloc optique par rapport à l'aile, en agissant sur deux points de fixation du bloc optique sur la face avant.In a following operation, the car manufacturer realizes the adjustment of the position of the optical block relative to the wing, by acting on two points of attachment of the optical block on the front face.
L'inconvénient majeur de ce mode opératoire réside surtout dans cette opération de reprise en fin de montage, qui consiste à régler la position du bloc optique. En outre, ce réglage délicat doit être effectué pour tous les véhicules compte tenu des tolérances de fabrication et d'assemblage des différents éléments mis en jeu. Ces éléments étant également susceptibles de déformations plus ou moins importantes, les affleurements de surface obtenus par ces réglages ne sont pas stables dans le temps et peuvent nécessiter des réglages supplémentaires. A cet effet, on connaît dans le document EP-A-1 232 932 un ensemble de bloc-avant de véhicule automobile comprenant une face avant, qui présente une partie centrale et deux parties latérales, une peau de pare-chocs, deux poutres flexibles s'étendant latéralement et formant des supports de la peau de pare-chocs, dont chacune a une première extrémité reliée à la partie centrale et une seconde extrémité destinée à être reliée à une partie avant d'aile de carrosserie du véhicule, et deux blocs optiques, dont chacun est fixé rigidement à une poutre respective.The major disadvantage of this procedure lies above all in this recovery operation at the end of assembly, which consists in adjusting the position of the optical unit. In addition, this delicate adjustment must be made for all vehicles given the manufacturing and assembly tolerances of the various elements involved. These elements being also susceptible to greater or lesser deformations, the surface outcrops obtained by these adjustments. are not stable over time and may require additional adjustments. For this purpose, document EP-A-1 232 932 discloses a motor vehicle front block assembly comprising a front face, which has a central part and two lateral parts, a bumper skin, and two flexible beams. extending laterally and forming bumper skin supports, each of which has a first end connected to the central portion and a second end for connection to a vehicle body wing front portion, and two blocks optical, each of which is rigidly attached to a respective beam.
La structure décrite dans ce document permet un positionnement automatique et permanent des contours visibles des blocs optiques par rapport aux extrémités d'ailes correspondantes et à la peau de pare-chocs.The structure described in this document allows automatic and permanent positioning of the visible contours of the optical blocks relative to the corresponding wing ends and the bumper skin.
Dans le même temps, cette structure assure un positionnement relatif précis des extrémités d'ailes et de la peau de pare-chocs. Mais, il peut être également souhaitable, pour améliorer les qualités esthétiques du véhicule, d'assurer une continuité d'aspect des blocs optiques et de la peau de pare-chocs avec d'autres éléments de carrosserie, comme par exemple le capot du véhicule automobile. De plus, certaines peaux de pare-chocs ont des formes qui entourent chaque bloc optique sur une partie de son périmètre intérieur si bien qu'il est nécessaire de pouvoir rattraper le jeu entre la peau de pare-chocs et les blocs optiques au niveau de cette partie intérieure. L'invention a donc pour but de proposer un ensemble de bloc- avant de véhicule automobile sous la forme d'un module pré-assemblé, dont les différents éléments constitués par les blocs optiques et la peau de pare-chocs, peuvent être automatiquement réglés et bloqués en position, pour assurer une continuité d'aspect entre eux. . L'invention a donc pour objet un ensemble de bloc-avant de véhicule automobile comprenant :At the same time, this structure ensures precise relative positioning of the wingtips and the bumper skin. However, it may also be desirable, to improve the aesthetic qualities of the vehicle, to ensure a continuity of appearance of the optical blocks and the bumper skin with other body elements, such as for example the hood of the vehicle automobile. In addition, some bumper skins have shapes that surround each optical block on part of its inner perimeter so that it is necessary to be able to catch the play between the bumper skin and the optical blocks at the level of this inner part. The object of the invention is therefore to propose a motor vehicle front block assembly in the form of a pre-assembled module, the various elements of which consist of the optical blocks and the bumper skin, can be automatically adjusted. and locked in position, to ensure continuity of appearance between them. . The subject of the invention is therefore a set of front block of a motor vehicle comprising:
- une face avant rigide présentant une partie centrale et deux parties latérales,a rigid front face having a central part and two lateral parts,
- une peau de pare-chocs, - deux poutres flexibles s'étendant latéralement, dont une premi¬ ère extrémité est reliée à la partie centrale de la face avant et dont une seconde extrémité est reliée à une partie avant d'aile de carrosserie, et- a bumper skin, - two flexible beams extending laterally, a first end of which is connected to the central portion of the front face and a second end is connected to a front portion of the body wing, and
- deux blocs optiques, dont chacun est fixé rigidement à une poutre flexible respective, caractérisé en ce que la peau de pare-chocs est fixée sur la première extrémité de chaque poutre flexible et chaque première extrémité est réglable selon un premier axe Z et selon un deuxième axe Y sur la partie centrale de la face avant pour un ajustement de chaque bloc optique par rapport à la peau de pare-chocs. Selon d'autres caractéristiques de l'invention : - le réglage selon le premier axe Z de la première extrémité de chaque poutre est obtenu par des moyens d'indexage comprenant un manchon solidaire de la face avant et s'étendant perpendiculairement à cette face avant et un doigt prévu sur la poutre et s'étendant-perpendiculairement à cette poutre, et susceptible de coulissement axial dans ledit manchon, le doigt étant bloqué par le manchon selon le premier axe Z,two optical blocks, each of which is fixed rigidly to a respective flexible beam, characterized in that the bumper skin is fixed on the first end of each flexible beam and each first end is adjustable along a first axis Z and according to a second Y axis on the central part of the front face for an adjustment of each optical block relative to the bumper skin. According to other characteristics of the invention: the adjustment according to the first axis Z of the first end of each beam is obtained by indexing means comprising a sleeve integral with the front face and extending perpendicularly to this front face and a finger provided on the beam and extending perpendicular to this beam, and capable of axial sliding in said sleeve, the finger being blocked by the sleeve along the first axis Z,
- le manchon comporte des moyens de blocage du doigt selon un troisième axe X, - chaque poutre comporte des moyens d'indexage selon le premier axe Z et selon le troisième axe X de la peau de pare-chocs,the sleeve comprises means for blocking the finger along a third axis X, each beam comprises indexing means along the first axis Z and along the third axis X of the bumper skin,
- les moyens d'indexage de la peau de pare-chocs sont formés par au moins une portion en creux ménagée sur la partie supérieure de la poutre et s'étendant transversalement suivant la direction générale de cette poutre et par au moins une portion en saillie, complémentaire ménagée à la partie supérieure de la peau de pare-chocs,- The indexing means of the bumper skin are formed by at least one recessed portion formed on the upper part of the beam and extending transversely in the general direction of the beam and by at least one projecting portion. , complementary to the upper part of the bumper skin,
- chaque poutre comporte une zone de flexion disposée entre la première extrémité et la fixation du bloc optique correspondant, et - la zone de flexion est formée par une encoche sensiblement verticale ménagée sur ladite poutre.each beam comprises a bending zone disposed between the first end and the fixing of the corresponding optical block, and the bending zone is formed by a substantially vertical notch formed on said beam.
L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée à titre d'exemple et faite en se référant aux dessins annexés, sur lesquels : - la Fig. 1 est une vue schématique en perspective d'un ensemble de bloc-avant, conforme à l'invention,The invention will be better understood on reading the description which follows, given by way of example and with reference to the appended drawings, in which: FIG. 1 is a schematic perspective view of a front block assembly, according to the invention,
- la Fig. 2 est une vue schématique en perspective éclatée des différents éléments composant l'ensemble de bloc-avant, conforme à l'invention,FIG. 2 is a diagrammatic perspective exploded view of the various elements composing the assembly of front block, according to the invention,
- la Fig. 3 est une vue schématique en perspective de la face avant de l'ensemble de bloc-avant, conforme à l'invention,FIG. 3 is a schematic perspective view of the front face of the front block assembly, according to the invention,
- la Fig. 4 est une vue schématique en perspective d'une poutre flexible de l'ensemble de bloc-avant, conforme à l'invention.FIG. 4 is a schematic perspective view of a flexible beam of the assembly of front block, according to the invention.
Sur les Figs. 1 et 2, on a représenté schématiquement une partie avant d'un véhicule automobile comprenant un ensemble de bloc-avant 1 représenté partiellement, une extrémité avant 2a d'une aile de carrosserie 2 et une extrémité avant 3 d'un capot.In Figs. 1 and 2, there is shown schematically a front portion of a motor vehicle comprising a front block assembly 1 partially shown, a front end 2a of a body wing 2 and a front end 3 of a hood.
Les Figs. 1 et 2, ainsi que les Figs. 3 et 4, ont été orientées suivant trois axes X, Y et Z qui correspondent à l'orientation usuelle d'un véhicule automobile, à savoir respectivement l'axe longitudinal X orienté dans la direction de marche avant, l'axe transversal Y orienté de droite à gauche, du point de vue du conducteur, et l'axe vertical Z orienté de bas en haut. Tous les termes utilisés dans la suite de la description, pouvant indiquer un sens ou un positionnement, doivent être compris en référence à ce système d'axes.Figs. 1 and 2, as well as Figs. 3 and 4, have been oriented along three axes X, Y and Z which correspond to the usual orientation of a motor vehicle, namely respectively the longitudinal axis X oriented in the forward direction, the transverse axis Y oriented from right to left, from the point of view of the driver, and the vertical axis Z oriented from bottom to top. All terms used in the remainder of the description, which may indicate a direction or a positioning, must be understood with reference to this axis system.
La partie avant du véhicule représenté sur les Figs. 1 et 2 est symétrique ou quasi-symétrique par rapport à un plan médian vertical du véhicule si bien que, dans un but de clarté, la description qui suit sera faite pour un côté de cette partie avant, l'autre côté étant identique.The front part of the vehicle shown in Figs. 1 and 2 is symmetrical or quasi-symmetrical with respect to a vertical median plane of the vehicle so that, for the sake of clarity, the description which follows will be made for one side of this front part, the other side being identical.
L'ensemble de bloc-avant 1 du véhicule comporte une structure essentiellement rigide, constituée par une face avant désignée par la référence générale 10 et qui présente une partie centrale 11 ayant la forme générale d'un cadre et, de chaque côté, une partie latérale 12, ainsi que montrée à la Fig. 3.The front block assembly 1 of the vehicle comprises a substantially rigid structure constituted by a front face designated by the general reference 10 and which has a central portion 11 having the general shape of a frame and, on each side, a part 12, as shown in FIG. 3.
L'ensemble de bloc-avant 1 comporte aussi une peau de pare- chocs 15, réalisée par exemple d'une pièce de matériau plastique, disposée sur toute la largeur de la face avant 10, comme montré à la Fig. 1 , en dépassant latéralement des parties latérales 12 de la face avant 10, et en s'appliquant sur un bord de l'extrémité avant 2a de l'aile 2 en coïncidence avec celui-ci.The front block assembly 1 also comprises a bumper skin 15, made for example of a piece of plastic material, disposed over the entire width of the front face 10, as shown in FIG. 1, protruding laterally from the lateral portions 12 of the front face 10, and applying on an edge of the front end 2a of the wing 2 in coincidence therewith.
L'ensemble de bloc-avant 1 comporte, de plus, de chaque côté latéral, un bloc optique 20 monté sur la face avant 10 dans des formes complémentaires ménagées dans l'aile 2, le capot 3 et la peau de pare-chocs 15, au-dessous d'un prolongement supérieur 13 de la face avant 10 et au-dessus d'un bord supérieur 16 de la peau de pare-chocs 15, ainsi que représenté sur les Figs. 1 et 2.The front block assembly 1 further comprises, on each lateral side, an optical unit 20 mounted on the front face 10 in complementary shapes formed in the wing 2, the hood 3 and the bumper skin 15. , below an upper extension 13 of the front face 10 and above an upper edge 16 of the bumper skin 15, as shown in Figs. 1 and 2.
Le bloc optique 20 est fixé sur le prolongement latéral 13 par exemple au moyen de deux pattes 21.The optical unit 20 is fixed on the lateral extension 13 for example by means of two tabs 21.
L'ensemble de bloc-avant 1 comporte également, de chaque côté latéral, une poutre flexible et galbée désignée dans son ensemble par la référence 30 et qui est représentée à plus grande échelle à la Fig. 4. Chaque poutre flexible 30 s'étend essentiellement latéralement dans la direction de la peau de pare-chocs 15 et comporte une partie centrale 31 dont la face avant est pourvue d'un premier pion 32 destiné à coopérer avec une première patte inférieure 22 du bloc optique 20 pour l'indexage de ce bloc optique 20 selon les axes X et Z et d'un second pion 33 destiné à coopérer avec une seconde patte inférieure 23 du bloc optique 20 pour l'indexage selon les axes XYZ de ce bloc optique 20.The front block assembly 1 also comprises, on each lateral side, a flexible and curved beam generally designated 30 and which is shown on a larger scale in FIG. 4. Each flexible beam 30 extends substantially laterally in the direction of the bumper skin 15 and has a central portion 31 whose front face is provided with a first pin 32 for cooperating with a first lower leg 22 of the optical unit 20 for indexing this optical unit 20 along the X and Z axes and a second pin 33 intended to cooperate with a second leg lower 23 of the optical unit 20 for indexing along the XYZ axes of this optical unit 20.
La poutre flexible 30 comporte une première extrémité 34 reliée à la partie centrale 11 de la face avant 10 et sur laquelle est également fixé le bord supérieur 16 de la peau de pare-chocs 15 pour obtenir un positionnement selon l'axe Z de cette peau de pare-chocs 15. La poutre flexible 30 comporte une seconde extrémité 35 reliée à la partie avant 2a de l'aile de carrosserie 2, comme montrée sur la Fig. 1. La partie centrale 31 de la poutre flexible 30 comporte, sur son bord inférieur, une patte 36 de fixation sur la partie centrale 11 de la face avant 10.The flexible beam 30 has a first end 34 connected to the central portion 11 of the front face 10 and on which is also fixed the upper edge 16 of the bumper skin 15 to obtain a positioning along the Z axis of this skin Bumper 15. The flexible beam 30 has a second end 35 connected to the front portion 2a of the body wing 2, as shown in FIG. 1. The central portion 31 of the flexible beam 30 has, on its lower edge, a tab 36 for attachment to the central portion 11 of the front face 10.
D'une manière générale, la première extrémité 34 de chaque poutre flexible 30 est réglable selon un premier axe Z et selon un deuxième axe Y sur la partie centrale 11 de la face avant 10 pour un ajustement de chaque bloc optique 20 par rapport à la peau de pare-chocs 15. A cet effet, le réglage selon ces deux axes est obtenu par des moyens d'indexage comprenant un manchon creux 14, qui, dans l'exemple de réalisation représenté à la Fig. 3, est solidaire de la partie centrale 11 de la face avant 10 et s'étend perpendiculairement à cette face avant 10 en faisant saillie de cette dernière vers l'arrière suivant son axe longitudinal orienté sensiblement suivant l'axe longitudinal X du véhicule. Ce manchon 14 comporte un trou 14a allongé suivant la direction X de l'axe du manchon 14.In general, the first end 34 of each flexible beam 30 is adjustable along a first axis Z and along a second axis Y on the central portion 11 of the front face 10 for an adjustment of each optical block 20 relative to the bumper skin 15. For this purpose, the adjustment along these two axes is obtained by indexing means comprising a hollow sleeve 14, which, in the embodiment shown in FIG. 3, is secured to the central portion 11 of the front face 10 and extends perpendicularly to the front face 10 projecting from the latter rearwardly along its longitudinal axis oriented substantially along the longitudinal axis X of the vehicle. This sleeve 14 has an elongate hole 14a in the direction X of the axis of the sleeve 14.
Par exemple, le trou 14a présente une section rectangulaire dont les plus grands côtés sont horizontaux. Le trou 14a peut présenter d'autres formes, comme par exemple une forme oblongue. Par ailleurs, les moyens d'indexage comprennent un doigt 37 prévu sur la poutre 30 et s'étendant perpendiculairement à cette poutre, vers l'arrière du véhicule automobile, suivant son axe longitudinal orienté sensiblement suivant l'axe longitudinal X de- ce véhicule. Le doigt 37 est susceptible de coulissement axial dans l'orifice 14a du manchon creux 14. Dans l'exemple de réalisation représenté à la Fig. 4, le doigt 37 présente une section rectangulaire dont la hauteur h1 est sensiblement égale à la hauteur h2 du trou 14a du manchon 14 et dont la largeur 11 est inférieure à la largeur 12 de ce trou 14a, de façon à permettre au doigt 37 et par conséquent à la poutre flexible 31 correspondante de pouvoir se déplacer selon l'axe transversal Y, tous étant bloqués selon l'axe Z.For example, the hole 14a has a rectangular section whose longer sides are horizontal. The hole 14a may have other shapes, such as an oblong shape. Furthermore, the indexing means comprise a finger 37 provided on the beam 30 and extending perpendicular to this beam, towards the rear of the motor vehicle, along its longitudinal axis oriented substantially along the longitudinal axis X of this vehicle . The finger 37 is capable of axial sliding in the orifice 14a of the hollow sleeve 14. In the embodiment shown in FIG. 4, the finger 37 has a rectangular section whose height h1 is substantially equal to the height h2 of the hole 14a of the sleeve 14 and whose width 11 is smaller than the width 12 of this hole 14a, so as to allow the finger 37 and consequently the corresponding flexible beam 31 to be able to move along the transverse axis Y, all being blocked along the axis Z.
Chaque manchon 14 comprend aussi des moyens, non représentés, de blocage du doigt 37 correspondant selon l'axe X qui permet de solidariser, de façon définitive, avec une possibilité de démontage, le doigt 37 et le manchon 14. Ces moyens de blocage sont constitués par tout dispositif approprié de type classique, comme par exemple une paire vis/écrou ou une goupille. De plus, chaque poutre flexible 30 comporte des moyens d'indexage selon les axes X et Z de la peau de pare-chocs 15. Ces moyens d'indexage représentés notamment à la Fig. 4, comprennent au moins une portion en creux 38 ménagée sur la partie supérieure de la partie centrale 31 de la poutre 30. Dans l'exemple de réalisation représenté sur cette figure, ladite portion en creux est formée d'au moins une gouttière 38 et par exemple de deux gouttières 38, qui s'étendent transversalement suivant la direction générale de la poutre 30.Each sleeve 14 also comprises means, not shown, for locking the finger 37 corresponding to the axis X which permanently secures, with a possibility of disassembly, the finger 37 and the sleeve 14. These locking means are constituted by any suitable device of conventional type, such as for example a pair screw / nut or a pin. In addition, each flexible beam 30 comprises indexing means along the X and Z axes of the bumper skin 15. These indexing means represented in particular in FIG. 4, comprise at least one recessed portion 38 formed on the upper part of the central portion 31 of the beam 30. In the embodiment shown in this figure, said recessed portion is formed of at least one gutter 38 and for example two gutters 38, which extend transversely in the general direction of the beam 30.
Ces moyens d'indexage comprennent au moins une portion en saillie complémentaire ménagée à la partie supérieure de la peau de pare-chocs et qui, dans l'exemple de réalisation montré sur les Figs. 1 et 2, est constituée par le bord supérieur 16 de la peau de pare-chocs 15, de façon à réaliser un accrochage de cette peau de pare-chocs 15 sur chaque poutre 30, avec une possibilité de mouvement relatif d'ajustement suivant la direction générale de cette poutre 30, c'est à dire selon l'axe Y. Chaque poutre flexible 30 comporte éventuellement une zone de flexion 40 disposée entre la première extrémité 34 et la portion centrale 31 et plus particulièrement entre la première extrémité 34 de fixation de la peau de pare- chocs 15 et la portion centrale 31 sur laquelle est monté le bloc optique 20 correspondant. Cette zone de flexion est formée par exemple par une encoche 40 sensiblement verticale. Cette encoche 40 est notamment utile quand la partie d'extrémité 2a de l'aile 2 fixée sur la seconde extrémité 35 de la poutre 30 correspondante, est rigide. La configuration des différents éléments composant l'ensemble de bloc-avant conforme à l'invention, n'impose pas un ordre de montage entre eux particulier, et par exemple les blocs optiques peuvent être montés sur les poutres flexibles avant le montage de celles-ci sur la face avant ou ils peuvent être montés après.These indexing means comprise at least one complementary projecting portion formed in the upper part of the bumper skin and which, in the embodiment shown in FIGS. 1 and 2, is constituted by the upper edge 16 of the bumper skin 15, so as to attach this bumper skin 15 to each beam 30, with a possibility of relative movement of adjustment according to the general direction of this beam 30, that is to say along the axis Y. Each flexible beam 30 optionally comprises a flexion zone 40 disposed between the first end 34 and the central portion 31 and more particularly between the first end 34 of attachment the bumper skin 15 and the central portion 31 on which is mounted the corresponding optical unit 20. This bending zone is formed for example by a notch 40 substantially vertical. This notch 40 is particularly useful when the end portion 2a of the wing 2 attached to the second end 35 of the corresponding beam 30 is rigid. The configuration of the different elements composing the assembly of front block according to the invention, does not impose a particular order of assembly between them, and for example the optical blocks can be mounted on the flexible beams before the assembly of these ci on the front or they can be mounted after.
L'ensemble de bloc-avant selon l'invention permet par conséquent d'obtenir une qualité esthétique optimale de la partie avant du véhicule, constante dans le temps et ce sans opération de reprise et d'ajustement supplémentaire, postérieure à l'assemblage du véhicule. En outre, l'élasticité des parties latérales de l'ensemble de bloc- avant selon l'invention apportée par l'élasticité de chaque poutre flexible permet durant le montage de cet ensemble sur la caisse du véhicule, une déformation légère de ces parties latérales par resserrement vers l'intérieur. Cela facilite l'utilisation de gabarits de montage qui permettent de fixer avec précision, et de façon automatisée, le bloc-avant sur la caisse du véhicule. The front block assembly according to the invention therefore makes it possible to obtain an optimal aesthetic quality of the front part of the vehicle, which is constant in time and without the need for additional recovery and adjustment operations, subsequent to the assembly of the vehicle. vehicle. In addition, the elasticity of the side portions of the front block assembly according to the invention provided by the elasticity of each flexible beam allows during the assembly of this assembly on the vehicle body, a slight deformation of these side parts. by tightening inwards. This facilitates the use of mounting templates that allow the front block to be accurately and automatically attached to the vehicle body.

Claims

REVENDICATIONS 1. Ensemble de bloc-avant de véhicule automobile comprenant :1. A set of front-end of a motor vehicle comprising:
- une face avant (10) rigide présentant une partie centrale (11 ) et deux parties latérales (12, 13), - une peau de pare-chocs (15, 16),a rigid front face (10) having a central part (11) and two lateral parts (12, 13), - a bumper skin (15, 16),
- deux poutres flexibles (30) s'étendant latéralement, dont une première extrémité (34) est reliée à la partie centrale (11 ) de la face avant (10) et dont une seconde extrémité (35) est reliée à une partie avant (2a) d'aile de carrosserie (2), et - deux blocs optiques (20), dont chacun est fixé rigidement à une poutre flexible (30) respective, caractérisé en ce que la peau de pare-chocs (15) est fixée sur la première extrémité (34) de chaque poutre flexible (30) et chaque première extrémité (34) est réglable selon un premier axe Z et selon un deuxième axe Y sur la partie centrale (11) de la face avant (10) pour un ajustement de chaque bloc optique (20) par rapport à la peau de pare-chocs (15, 16).- two flexible beams (30) extending laterally, a first end (34) of which is connected to the central part (11) of the front face (10) and a second end (35) of which is connected to a front part ( 2a), and - two optical blocks (20), each of which is rigidly attached to a respective flexible beam (30), characterized in that the bumper skin (15) is fixed on the first end (34) of each flexible beam (30) and each first end (34) is adjustable along a first axis Z and along a second axis Y on the central portion (11) of the front face (10) for adjustment each optical block (20) relative to the bumper skin (15, 16).
2. Ensemble de bloc-avant selon la revendication 1 , caractérisé en ce que le réglage selon le premier axe Z de la première extrémité (34) de chaque poutre flexible (30) est obtenu par des moyens d'indexage comprenant un manchon (14) solidaire de la face avant (10) et s'étendant perpendiculairement à cette face avant (10) et un doigt (37) prévu sur la poutre (30) et s'étendant perpendiculairement à cette poutre (30) et susceptible de coulissement axial dans ledit manchon (14), le doigt (37) étant bloqué par le manchon (14) selon le premier axe Z. 2. A set of front-end unit according to claim 1, characterized in that the adjustment according to the first axis Z of the first end (34) of each flexible beam (30) is obtained by indexing means comprising a sleeve (14). ) secured to the front face (10) and extending perpendicularly to this front face (10) and a finger (37) provided on the beam (30) and extending perpendicularly to this beam (30) and capable of axial sliding in said sleeve (14), the finger (37) being blocked by the sleeve (14) along the first axis Z.
3. Ensemble de bloc-avant selon la revendication 2, caractérisé en ce que le manchon (14) comprend des moyens de blocage du doigt (37) selon un troisième axe X.3. Front-block assembly according to claim 2, characterized in that the sleeve (14) comprises means for locking the finger (37) along a third axis X.
4. Ensemble de bloc-avant selon l'une quelconque des revendications 1 à 3, caractérisé en ce que chaque poutre (30) comporte des moyens (38) d'indexage de la peau de pare-chocs (15) selon le premier axe Z et selon le troisième axe X. 4. assembly of front-block according to any one of claims 1 to 3, characterized in that each beam (30) comprises means (38) for indexing the bumper skin (15) along the first axis Z and according to the third axis X.
5. Ensemble de bloc-avant selon la revendication 4, caractérisé en ce que les moyens d'indexage de la peau de pare-chocs (15) sont formés par au moins une portion en creux (38) ménagée sur la partie supérieure de la poutre (30) et s'étendant transversalement suivant la direction générale de cette poutre (30) et par au moins une portion en saillie (16) complémentaire ménagée à la partie supérieure de la peau de pare-chocs (15).5. Front-panel assembly according to claim 4, characterized in that the indexing means of the bumper skin (15) are formed by at least one hollow portion (38) formed on the upper part of the beam (30) and extending transversely in the general direction of this beam (30) and by at least a complementary projecting portion (16) formed in the upper part of the bumper skin (15).
6. Ensemble de bloc-avant suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que chaque poutre (30) comporte une zone de flexion (40) disposée entre la première extrémité (34) et la fixation du bloc optique (20) correspondant.Front-block assembly according to one of Claims 1 to 5, characterized in that each beam (30) has a flexion zone (40) disposed between the first end (34) and the optical block attachment ( 20) corresponding.
7. Ensemble de bloc-avant selon la revendication 6, caractérisé en ce que la zone de flexion est formée par une encoche (40) sensiblement verticale. 7. Front-panel assembly according to claim 6, characterized in that the bending zone is formed by a notch (40) substantially vertical.
EP05788567A 2004-08-02 2005-07-06 Motor vehicle font unit Withdrawn EP1773648A1 (en)

Applications Claiming Priority (2)

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FR0408530A FR2873649B1 (en) 2004-08-02 2004-08-02 FRONT BLOCK ASSEMBLY OF MOTOR VEHICLE
PCT/FR2005/001749 WO2006024717A1 (en) 2004-08-02 2005-07-06 Motor vehicle font unit

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WO2006024717A1 (en) 2006-03-09
FR2873649A1 (en) 2006-02-03
US7607723B2 (en) 2009-10-27
RU2007107792A (en) 2008-09-10
CN100453384C (en) 2009-01-21
FR2873649B1 (en) 2006-11-24
US20080001436A1 (en) 2008-01-03
RU2364538C2 (en) 2009-08-20
CN101022988A (en) 2007-08-22

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