EP1725413A1 - Vehicle bumper including a tow ring insert - Google Patents

Vehicle bumper including a tow ring insert

Info

Publication number
EP1725413A1
EP1725413A1 EP05732908A EP05732908A EP1725413A1 EP 1725413 A1 EP1725413 A1 EP 1725413A1 EP 05732908 A EP05732908 A EP 05732908A EP 05732908 A EP05732908 A EP 05732908A EP 1725413 A1 EP1725413 A1 EP 1725413A1
Authority
EP
European Patent Office
Prior art keywords
insert
bumper
mold
housing
vehicle
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Withdrawn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
EP05732908A
Other languages
German (de)
French (fr)
Inventor
Thierry Renault
Denis Luet
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.)
Cadence Innovation SAS
Original Assignee
Cadence Innovation 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 Cadence Innovation SAS filed Critical Cadence Innovation SAS
Publication of EP1725413A1 publication Critical patent/EP1725413A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/48—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/48—Traction couplings; Hitches; Draw-gear; Towing devices characterised by the mounting
    • B60D1/56—Traction couplings; Hitches; Draw-gear; Towing devices characterised by the mounting securing to the vehicle bumper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/48—Traction couplings; Hitches; Draw-gear; Towing devices characterised by the mounting
    • B60D1/56—Traction couplings; Hitches; Draw-gear; Towing devices characterised by the mounting securing to the vehicle bumper
    • B60D1/565—Traction couplings; Hitches; Draw-gear; Towing devices characterised by the mounting securing to the vehicle bumper having an eyelet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/03—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by material, e.g. composite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • B60R2019/1833—Structural beams therefor, e.g. shock-absorbing made of plastic material
    • B60R2019/184—Blow moulded

Definitions

  • the invention relates to vehicle bumpers. It is conventional to have on the vehicle bumpers a towing and maritime stowage ring rigidly fixed to a metal bumper beam. In this case, a specification specifies that the beam can receive the removable ring screwed into an insert fixed to the beam. In this specification, three loading cases are used to size the ring and its fixing insert:
  • An object of the invention is to allow the attachment of a towing ring to a bumper whose beam is made of composite material.
  • a bumper for a vehicle comprising a beam comprising at least one synthetic material, the bumper comprising an insert for receiving a towing ring.
  • the bumper according to the invention may also have at least any one of the following characteristics: - the insert is fixed directly to the beam;
  • the housing has a sleeve shape; - the insert has a collar;
  • the insert has a crimped end; - the insert comprises a metal;
  • the beam consists of at least one synthetic material
  • the beam comprises reinforcing fibers
  • the invention also provides a method of manufacturing a bumper for a vehicle, in which there is an insert for receiving a towing ring in a bumper comprising ' a beam comprising at least one synthetic material.
  • the method according to the invention may also have at least any one of the following characteristics:
  • the insert is placed in the housing; - the insert is placed in the housing while the beam has a temperature higher than the ambient temperature;
  • FIG. 3 is a perspective view of a ring intended to be received in the insert of the beam of Figures 1 and 2;
  • FIGs 4, 5 and 6 are three views similar to Figures 1 and 2 illustrating a second embodiment of the beam according to the invention;
  • Figures 7 and 8 are two views similar to Figures 1 and 2 illustrating a third embodiment of the beam
  • FIG. 9 is an axial sectional view of an insert forming part of the beams of Figures 1 to 2 and 4 to 8;
  • FIG. 10 is an axial sectional view of the housing arranged in the beams of Figures 1 to 2 and 4 to 8 for the reception of the insert of Figure 9;
  • FIG. 11 is a partial elevational view of a mold for making a beam according to the invention. Illustrated in Figures 1 and 2 a first embodiment of a bumper 2 according to the invention.
  • the bumper here is a front bumper.
  • the bumper comprises a beam 4 as well as an insert 6 fixed to the beam.
  • the beam comprises a bar 5 extending over the greater part of the length of the beam in a median zone thereof.
  • the beam comprises two respective absorbers 10, the base of which is formed by a plate 12 having a generally planar shape perpendicular to a direction of travel 13 of the vehicle.
  • the absorber 10 comprises a body 14 extending forwardly projecting from the plate 12 and having a cross section in a plane parallel to the plate 12 narrower than the latter. In this way, the edges of the plate extend from the body 14 in a plane perpendicular to the direction 13.
  • the beam will be formed and produced in accordance with the teaching of document FR-2 835 793. It will thus be for example made of at least one reinforced thermoplastic material by fibers such as glass fibers. These fibers may be unidirectional, grouped to form mats or else woven with each other.
  • the beam 4 is in one piece and produced in a single compression molding operation, as will be seen below. Alternatively, the beam may be made of a thermoset material.
  • the plate 12 of each absorber 10 is intended to be fixed to one end of a respective spar of the vehicle structure.
  • the bumper comprises a skin of synthetic material, not shown and intended to hide the beam from view from outside the vehicle.
  • the insert 6 is made of metal, for example steel. It is received in a housing 16 of the beam which is in this case formed in one of the absorbers 10. As illustrated in FIG. 10, the housing 16 has a general shape of sleeve which is in this case a cylindrical shape axis 18. As illustrated in Figures 9 and 10, the synthetic material of the beam 4 is in contact with the insert 6 in the entire housing.
  • the insert 6 has in particular an external face 20 of cylindrical shape making surface-to-surface contact with the cylindrical face 22 of the housing 16.
  • the insert has a general shape of sleeve illustrated in detail in FIG. 9. It has a wall cylindrical 24 whose face 20 constitutes the external face.
  • the insert is here formed in the form of a metal stud. It has several internal cylindrical faces 26, 28 and 30 succeeding each other along the axis 18 of the insert from a first axial end 32 of the insert 6 to a second end 34.
  • the faces 26, 28 and 30 have respective diameters which increase from the end 32 to the end 34.
  • the face 26 of smaller diameter extends over more than half the length of the insert 6 in the present example. It is further threaded so as to be able to cooperate by screw-nut connection with a towing and stowing ring such as the ring 40 illustrated in FIG. 3.
  • the insert 6 has at its end 32 a collar extending radially projecting from the face 20 and placed in abutment against a rear face of the plate.
  • the end 34 of the insert is crimped on an intermediate face 42 of the absorber generally extending halfway between a front face 44 of the plate 12 and a front face 46 of the absorber.
  • the body 14 of the absorber has a recess 17 in line with the insert 6 when the absorber is observed from the front of the vehicle, to allow access to the insert in order to set up the ring 40.
  • Each of the plates 12 in this case has four holes 50 for fixing the plate to a face of the corresponding spar.
  • the insert extends in plan view of the plate near an external edge 52 thereof opposite the bar 5.
  • the orifices 50 are arranged in a rectangle, this rectangle being inscribed between the insert and the bar 5 in plan view so that the orifices are all closer to the bar than the insert.
  • the bumper which has just been described is produced in the present case as follows. Heating is first carried out on the blank (s) of synthetic materials intended to constitute the beam 4. It may be provided that the heating temperature is between 150 and 250 ° C. and is for example equal to 200 ° C. The or each blank is then installed in a compression mold 60 such as that illustrated in FIG. 11. This mold conventionally comprises a matrix and a punch movable relative to each other and forming a cavity 61 of the mold . The mold is closed by bringing the punch closer to the die.
  • the mold comprises a release part 62 movably mounted to slide along an axis 64 relative to a frame 67 of the mold 60.
  • the part 62 here has a cylindrical shape and constitutes a jack.
  • the axis 64 corresponds to the axis of the cylinder.
  • the displacement of the jack to produce the housing is carried out in the direction of the front by reference to the vehicle in the direction 13.
  • the mold is then opened and the beam is removed from the mold.
  • the formation of the housing by means of the movable cylinder constitutes a web of material at the level of the housing 16 transversely to the latter. This fabric can be drilled in recovery before installing the insert.
  • the extra thicknesses thus constitute bosses around the orifices 50. It is also possible to provide ribs 80 connecting these extra thicknesses to the body of the absorber.
  • the reinforcements formed by the extra thicknesses 78 and the ribs 80 reduce the risks of tearing by shearing in the event of effort or impact. It is observed in particular that the most stressed fixing points among the orifices 50 are the points located above, in the vicinity of the ring, because the most penalizing load cases are the downward forces.
  • a second embodiment of the beam according to the invention is illustrated in Figures 4 to 6. This differs from the previous essentially by the position of the insert 6 relative to the beam.
  • the absorber 10 receiving the insert 6 has a central cavity 64, the front face 46 of the absorber being absent.
  • the housing is formed in the direction of the rear of the vehicle from the face 42 which constitutes the bottom of this cavity 64.
  • the insert extends this time in plan view inside the rectangle formed by the four orifices 50.
  • FIG. 6 illustrates the beam with its absorber in rear view. It is observed that the absorber is in fact hollowed out between its main wall and the wall forming the housing 16.
  • Spacers 66 oriented radially with respect to the axis 18 of the housing are provided to give the assembly the necessary rigidity. There are six of these spacers in this case. It can be seen in FIGS.
  • each absorber 10 is formed by an extension of the beam towards the rear of the vehicle and by a network of ribs 70 formed by a series of ribs s' extending along the direction of travel of the vehicle and another series of ribs crossing the previous ones and extending transversely to this direction of travel. All the ribs are in this case each inscribed in a vertical plane having a planar shape.
  • the insert 6 is this time fixed to the bar and not to the absorber 10.
  • the front face of the bar has for this purpose a recess 72 and the bar comprises two walls 74 having in plan view a shape in V.
  • the tip of the V is directed towards the rear of the vehicle, the walls each extending in a vertical plane and each having a planar shape.
  • the insert 6 is arranged with its axis 18 extending in a horizontal plane along the direction of travel of the vehicle.
  • the bar has a transverse profile in H so that it has a front wall 82, a rear wall 84 and between these, a wall 86.
  • the walls 82 and 84 are essentially plane and vertical and lie opposite each other.
  • the wall 86 is essentially horizontal and extends from the wall 82 to the wall 84 while being slightly wavy from the wall 82 to the wall 84.
  • the position of the towing insert is chosen to be close to the points of attachment of the beam to the vehicle structure.
  • the invention does not however prevent the beam from satisfactorily filling the usual specifications relating to the parking impact and the repairability impact.
  • the advantage of making the insert housing by means of a movable cylinder is that it avoids the creation of a zone of material welding which otherwise inevitably creates a zone of weakness in the part.
  • the area receiving the insert has a homogeneous distribution of reinforcing fibers with good mechanical performance.
  • the compacting cylinder may be moved forwards or backwards to form the housing.
  • the beam may be made up of several thermoplastic or thermoset materials. It could be a rear bumper.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Vibration Dampers (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

A vehicle bumper (2) with a beam (4) comprising at least one synthetic material. The bumper includes a tow ring insert (6).

Description

PARE-CHOC POUR VEHICULE COMPRENANT UN INSERT DE RECEPTION D'UN ANNEAU DE REMORQUAGE VEHICLE BUMPER COMPRISING A TOWING RING RECEIVING INSERT
L'invention concerne les pare-chocs de véhicule. II est classique de disposer sur les pare-chocs de véhicule un anneau de remorquage et d'arrimage maritime rigidement fixé à une poutre métallique de pare-choc. Dans ce cas, un cahier des charges précise que la poutre peut recevoir l'anneau amovible vissé dans un insert fixé à la poutre. Dans ce cahier des charges, trois cas de mise en charge sont utilisés pour dimensionner l'anneau et son insert de fixation :The invention relates to vehicle bumpers. It is conventional to have on the vehicle bumpers a towing and maritime stowage ring rigidly fixed to a metal bumper beam. In this case, a specification specifies that the beam can receive the removable ring screwed into an insert fixed to the beam. In this specification, three loading cases are used to size the ring and its fixing insert:
- traction et compression dans l'axe de l'insert avec la moitié du poids du véhicule en charge ;- traction and compression in the axis of the insert with half the weight of the laden vehicle;
- prestation en sortie de fossé : il s'agit d'une traction avec des angles suivant la direction Y (direction horizontale transversale) et la direction Z (direction verticale) avec la moitié du poids du véhicule en charge ; et- service at the exit from the ditch: it is a traction with angles in the Y direction (horizontal transverse direction) and the Z direction (vertical direction) with half the weight of the laden vehicle; and
- arrimage maritime : il s'agit d'une traction vers le bas avec une force égale à 40% du poids du véhicule à vide. Un but de l'invention est de permettre la fixation d'un anneau de remorquage à un pare-choc dont la poutre est en matériau composite. A cet effet, on prévoit selon l'invention un pare-choc pour véhicule, comprenant une poutre comportant au moins un matériau synthétique, le pare-choc comprenant un insert de réception d'un anneau de remorquage. Le pare-choc selon l'invention pourra présenter en outre au moins l'une quelconque des caractéristiques suivantes : - l'insert est fixé directement à la poutre ;- maritime stowage: it is a pull down with a force equal to 40% of the weight of the empty vehicle. An object of the invention is to allow the attachment of a towing ring to a bumper whose beam is made of composite material. To this end, a bumper for a vehicle is provided according to the invention, comprising a beam comprising at least one synthetic material, the bumper comprising an insert for receiving a towing ring. The bumper according to the invention may also have at least any one of the following characteristics: - the insert is fixed directly to the beam;
- l'insert est reçu dans un logement en matériau synthétique ;- the insert is received in a housing made of synthetic material;
- le matériau synthétique est en contact avec l'insert dans l'intégralité du logement ;- the synthetic material is in contact with the insert in the entire housing;
- le logement a une forme de manchon ; - l'insert présente une collerette ;- The housing has a sleeve shape; - the insert has a collar;
- l'insert présente une extrémité sertie ; - l'insert comprend un métal ;- The insert has a crimped end; - the insert comprises a metal;
- la poutre est constituée d'au moins un matériau synthétique ;- The beam consists of at least one synthetic material;
- la poutre comprend des fibres de renfort ;- The beam comprises reinforcing fibers;
- l'insert est fixé à un absorbeur de la poutre ; et - l'insert est fixé à un barreau de la poutre. On prévoit également selon l'invention un procédé de fabrication d'un pare-choc pour véhicule, dans lequel on dispose un insert de réception d'un anneau de remorquage dans un pare-choc comprenant ' une poutre comportant au moins un matériau synthétique. Le procédé selon l'invention pourra présenter en outre au moins l'une quelconque des caractéristiques suivantes :- the insert is fixed to an absorber of the beam; and - the insert is fixed to a bar of the beam. The invention also provides a method of manufacturing a bumper for a vehicle, in which there is an insert for receiving a towing ring in a bumper comprising ' a beam comprising at least one synthetic material. The method according to the invention may also have at least any one of the following characteristics:
- on fixe l'insert directement à la poutre ;- the insert is fixed directly to the beam;
- on chauffe le ou chaque matériau destiné à former la poutre, puis on l'installe dans un moule ; - on comprime le ou chaque matériau lors de la fermeture du moule ;- The or each material intended to form the beam is heated, then it is installed in a mold; - The or each material is compressed when the mold is closed;
- on déplace une pièce de dégagement dans le moule pour former un logement ;- We move a release piece in the mold to form a housing;
- le déplacement a lieu après une fermeture du moule ;- the displacement takes place after a closing of the mold;
- on dispose l'insert dans le logement ; - on dispose l'insert dans le logement tandis que la poutre a une température supérieure à la température ambiante ; et- the insert is placed in the housing; - the insert is placed in the housing while the beam has a temperature higher than the ambient temperature; and
- on sertit l'insert sur la poutre. Enfin, on prévoit selon l'invention un moule de fabrication d'une poutre de pare-chocs pour véhicule, comprenant un châssis et une pièce de dégagement montée mobile dans une cavité du moule par rapport au châssis. D'autres caractéristiques et avantages de l'invention apparaîtront encore dans la description suivante de trois modes de réalisation donnés à titre d'exemples non limitatifs en référence aux dessins annexés sur lesquels : - les figures 1 et 2 sont deux vues partielles en perspective illustrant une poutre de pare-choc selon un premier mode de réalisation de l'invention ;- the insert is crimped onto the beam. Finally, according to the invention, provision is made for a mold for manufacturing a bumper beam for a vehicle, comprising a chassis and a release part mounted to move in a cavity of the mold relative to the chassis. Other characteristics and advantages of the invention will appear in the following description of three embodiments given by way of nonlimiting examples with reference to the appended drawings in which: - Figures 1 and 2 are two partial perspective views illustrating a bumper beam according to a first embodiment of the invention;
- la figure 3 est une vue en perspective d'un anneau destiné à être reçu dans l'insert de la poutre des figures 1 et 2 ; - les figures 4, 5 et 6 sont trois vues analogues aux figures 1 et 2 illustrant un deuxième mode de réalisation de la poutre selon l'invention ;- Figure 3 is a perspective view of a ring intended to be received in the insert of the beam of Figures 1 and 2; - Figures 4, 5 and 6 are three views similar to Figures 1 and 2 illustrating a second embodiment of the beam according to the invention;
- les figures 7 et 8 sont deux vues analogues aux figures 1 et 2 illustrant un troisième mode de réalisation de la poutre ;- Figures 7 and 8 are two views similar to Figures 1 and 2 illustrating a third embodiment of the beam;
- la figure 9 est une vue en coupe axiale d'un insert faisant partie des poutres des figures 1 à 2 et 4 à 8 ;- Figure 9 is an axial sectional view of an insert forming part of the beams of Figures 1 to 2 and 4 to 8;
- la figure 10 est une vue en coupe axiale du logement aménagé dans les poutres des figures 1 à 2 et 4 à 8 pour la réception de l'insert de la figure 9 ; et- Figure 10 is an axial sectional view of the housing arranged in the beams of Figures 1 to 2 and 4 to 8 for the reception of the insert of Figure 9; and
- la figure 11 est une vue partielle en élévation d'un moule de réalisation d'une poutre selon l'invention. On a illustré aux figures 1 et 2 un premier mode de réalisation d'un pare-choc 2 selon l'invention. Le pare-choc est ici un pare-choc avant. Le pare-choc comprend une poutre 4 ainsi qu'un insert 6 fixé à la poutre. La poutre comprend un barreau 5 s'étendant sur la plus grande partie de la longueur de la poutre dans une zone médiane de celle-ci. En regard des deux extrémités longitudinales 8 du barreau 5, la poutre comprend deux absorbeurs respectifs 10 dont la base est formée par une platine 12 ayant une forme générale plane perpendiculaire à une direction de marche 13 du véhicule. L'absorbeur 10 comprend un corps 14 s'étendant vers l'avant en saillie de la platine 12 et ayant une section transversale dans un plan parallèle à la platine 12 plus étroite que celle-ci. De la sorte, les bords de la platine s'étendent en saillie du corps 14 dans un plan perpendiculaire à la direction 13. De façon générale, la poutre sera constituée et réalisée conformément à l'enseignement du document FR-2 835 793. Elle sera ainsi par exemple constituée en au moins un matériau thermoplastique renforcé par des fibres telles que des fibres de verre. Ces fibres pourront être unidirectionnelles, groupées pour former des mats ou encore tissées les unes avec les autres. La poutre 4 est d'un seul tenant et réalisée en une seule opération de moulage par compression, comme on le verra plus loin. Alternativement, la poutre pourra être réalisée en une matière thermodure. La platine 12 de chaque absorbeur 10 est destinée à être fixée à une extrémité d'un longeron respectif de la structure du véhicule. Le pare-choc comprend une peau en matière synthétique, non représentée et destinée à cacher la poutre à la vue depuis l'extérieur du véhicule. L'insert 6 est réalisé en métal, par exemple en acier. Il est reçu dans un logement 16 de la poutre qui est en l'espèce ménagé dans l'un des absorbeurs 10. Comme illustré à la figure 10, le logement 16 a une forme générale de manchon qui est en l'espèce une forme cylindrique d'axe 18. Comme illustré aux figures 9 et 10, le matériau synthétique de la poutre 4 est en contact avec l'insert 6 dans l'intégralité du logement. L'insert 6 présente en particulier une face externe 20 de forme cylindrique réalisant un contact surface contre surface avec la face cylindrique 22 du logement 16. L'insert a une forme générale de manchon illustrée en détail à la figure 9. Il présente une paroi cylindrique 24 dont la face 20 constitue la face externe. L'insert est ici formé sous la forme d'un goujon métallique. Il présente plusieurs faces cylindriques internes 26, 28 et 30 se succédant le long de l'axe 18 de l'insert depuis une première extrémité axiale 32 de l'insert 6 jusqu'à une seconde extrémité 34. Les faces 26, 28 et 30 ont des diamètres respectifs qui vont en augmentant depuis l'extrémité 32 jusqu'à l'extrémité 34. La face 26 de plus petit diamètre s'étend sur plus de la moitié de la longueur de l'insert 6 dans le présent exemple. Elle est de plus filetée de façon à pouvoir coopérer par liaison vis-écrou avec un anneau de remorquage et d'arrimage tel que l'anneau 40 illustré à la figure 3. L'insert 6 présente à son extrémité 32 une collerette s'étendant radialement en saillie de la face 20 et placée en butée contre une face arrière de la platine. L'extrémité 34 de l'insert est sertie sur une face intermédiaire 42 de l'absorbeur s'étendant globalement à mi-chemin entre une face avant 44 de la platine 12 et une face avant 46 de l'absorbeur. Comme on le voit sur la figure 1 , le corps 14 de l'absorbeur présente un évidement 17 au droit de l'insert 6 lorsqu'on observe l'absorbeur depuis l'avant du véhicule, pour permettre d'accéder à l'insert en vue de mettre en place l'anneau 40. Chacune des platines 12 présente en l'espèce quatre orifices 50 pour la fixation de la platine à une face du longeron correspondant. Comme on le voit en particulier sur la figure 2, l'insert s'étend en vue en plan de la platine à proximité d'un bord externe 52 de celle-ci opposé au barreau 5. Les orifices 50 sont disposés en rectangle, ce rectangle étant inscrit entre l'insert et le barreau 5 en vue en plan de sorte que les orifices sont tous plus proches du barreau que l'insert. Le pare-choc qui vient d'être décrit est réalisé en l'espèce de la façon suivante. On réalise d'abord un chauffage du ou des flans de matériaux de synthèse destinés à constituer la poutre 4. On pourra prévoir que la température de chauffage est comprise entre 150 et 250°C et est par exemple égale à 200°C. On installe ensuite le ou chaque flan dans un moule de compression 60 tel que celui illustré à la figure 11. Ce moule comprend de façon classique une matrice et un poinçon mobiles l'un par rapport à l'autre et formant une cavité 61 du moule. La fermeture du moule s'effectue en rapprochant le poinçon de la matrice. Lors de cette fermeture, on comprime le ou chaque matériau, ce qui donne sa forme générale à la poutre 4. Dans le présent exemple, le moule comprend une pièce de dégagement 62 montée mobile à coulissement le long d'un axe 64 par rapport à un châssis 67 du moule 60. La pièce 62 a ici une forme cylindrique et constitue un vérin. L'axe 64 correspond à l'axe du cylindre. Après la fermeture du moule, on déplace le vérin 62 pour former le logement 16 destiné à recevoir l'insert 6. Ce vérin vient donc comprimer la matière présente dans le moule après qu'elle s'est écoulée et mise en place. En l'espèce, le vérin a un diamètre d'environ 80 mm et exerce une pression d'environ 80.106Pa. Ainsi, la zone de la poutre destinée ultérieurement à recevoir l'insert- Figure 11 is a partial elevational view of a mold for making a beam according to the invention. Illustrated in Figures 1 and 2 a first embodiment of a bumper 2 according to the invention. The bumper here is a front bumper. The bumper comprises a beam 4 as well as an insert 6 fixed to the beam. The beam comprises a bar 5 extending over the greater part of the length of the beam in a median zone thereof. Opposite the two longitudinal ends 8 of the bar 5, the beam comprises two respective absorbers 10, the base of which is formed by a plate 12 having a generally planar shape perpendicular to a direction of travel 13 of the vehicle. The absorber 10 comprises a body 14 extending forwardly projecting from the plate 12 and having a cross section in a plane parallel to the plate 12 narrower than the latter. In this way, the edges of the plate extend from the body 14 in a plane perpendicular to the direction 13. Generally, the beam will be formed and produced in accordance with the teaching of document FR-2 835 793. It will thus be for example made of at least one reinforced thermoplastic material by fibers such as glass fibers. These fibers may be unidirectional, grouped to form mats or else woven with each other. The beam 4 is in one piece and produced in a single compression molding operation, as will be seen below. Alternatively, the beam may be made of a thermoset material. The plate 12 of each absorber 10 is intended to be fixed to one end of a respective spar of the vehicle structure. The bumper comprises a skin of synthetic material, not shown and intended to hide the beam from view from outside the vehicle. The insert 6 is made of metal, for example steel. It is received in a housing 16 of the beam which is in this case formed in one of the absorbers 10. As illustrated in FIG. 10, the housing 16 has a general shape of sleeve which is in this case a cylindrical shape axis 18. As illustrated in Figures 9 and 10, the synthetic material of the beam 4 is in contact with the insert 6 in the entire housing. The insert 6 has in particular an external face 20 of cylindrical shape making surface-to-surface contact with the cylindrical face 22 of the housing 16. The insert has a general shape of sleeve illustrated in detail in FIG. 9. It has a wall cylindrical 24 whose face 20 constitutes the external face. The insert is here formed in the form of a metal stud. It has several internal cylindrical faces 26, 28 and 30 succeeding each other along the axis 18 of the insert from a first axial end 32 of the insert 6 to a second end 34. The faces 26, 28 and 30 have respective diameters which increase from the end 32 to the end 34. The face 26 of smaller diameter extends over more than half the length of the insert 6 in the present example. It is further threaded so as to be able to cooperate by screw-nut connection with a towing and stowing ring such as the ring 40 illustrated in FIG. 3. The insert 6 has at its end 32 a collar extending radially projecting from the face 20 and placed in abutment against a rear face of the plate. The end 34 of the insert is crimped on an intermediate face 42 of the absorber generally extending halfway between a front face 44 of the plate 12 and a front face 46 of the absorber. As can be seen in FIG. 1, the body 14 of the absorber has a recess 17 in line with the insert 6 when the absorber is observed from the front of the vehicle, to allow access to the insert in order to set up the ring 40. Each of the plates 12 in this case has four holes 50 for fixing the plate to a face of the corresponding spar. As seen in particular in Figure 2, the insert extends in plan view of the plate near an external edge 52 thereof opposite the bar 5. The orifices 50 are arranged in a rectangle, this rectangle being inscribed between the insert and the bar 5 in plan view so that the orifices are all closer to the bar than the insert. The bumper which has just been described is produced in the present case as follows. Heating is first carried out on the blank (s) of synthetic materials intended to constitute the beam 4. It may be provided that the heating temperature is between 150 and 250 ° C. and is for example equal to 200 ° C. The or each blank is then installed in a compression mold 60 such as that illustrated in FIG. 11. This mold conventionally comprises a matrix and a punch movable relative to each other and forming a cavity 61 of the mold . The mold is closed by bringing the punch closer to the die. During this closing, the or each material is compressed, which gives its general shape to the beam 4. In the present example, the mold comprises a release part 62 movably mounted to slide along an axis 64 relative to a frame 67 of the mold 60. The part 62 here has a cylindrical shape and constitutes a jack. The axis 64 corresponds to the axis of the cylinder. After closing the mold, the cylinder 62 is moved to form the housing 16 intended to receive the insert 6. This jack therefore compresses the material present in the mold after it has passed and is put in place. In this case, the cylinder has a diameter of about 80 mm and exerts a pressure of about 80.10 6 Pa. Thus, the area of the beam later intended to receive the insert
6 était remplie dans un premier temps par de la matière. Celle-ci se trouve ensuite chassée par le vérin de compactage. Cette matière excédentaire est encore chaude et est capable de fluer pour aller se loger dans le reste de la pièce. Dans le présent exemple, le déplacement du vérin pour réaliser le logement s'effectue en direction de l'avant par référence au véhicule suivant la direction 13. On ouvre ensuite le moule et on procède au démoulage de la poutre. La formation du logement au moyen du vérin mobile constitue une toile de matière au niveau du logement 16 transversalement à celui-ci. Cette toile peut être percée en reprise préalablement à l'installation de l'insert. Une fois la pièce sortie du moule, on monte l'insert 6 dans la poutre alors que celle-ci est encore chaude, c'est-à-dire à une température sensiblement supérieure à la température ambiante. Cela permet de disposer d'un certain jeu de montage entre la poutre et l'insert. Ultérieurement, la matière en refroidissant se resserre sur l'insert. L'insert est mis en place de sorte que la collerette 32 s'étend contre la face arrière de la platine 12 opposée à un possible effort de traction. Cela lui donne par conséquent une bonne surface d'appui sur la poutre en cas de traction. Les faces 28 et 30 de l'insert avec leurs arêtes forment une zone de guidage qui permet de limiter le couple sur l'anneau une fois celui-ci reçu dans l'insert, en présence d'efforts qui ne sont pas orientés suivant l'axe 18. On procède ensuite à une opération de sertissage de l'insert sur la poutre. On a ainsi illustré à la figure 9 dans la demi-vue s'étendant à gauche de l'axe 18 l'insert dans sa forme avant sertissage, et dans la demi-vue s'étendant à droite l'insert dans sa forme après sertissage. Ce sertissage consiste en l'espèce à écraser par pliage la zone d'extrémité 34 de l'insert de façon à ce qu'elle s'étende radialement en saillie de la face 20 et vienne s'appliquer contre la face avant 42 de la platine. On constitue ainsi un bourrelet qui permet de répondre à des circonstances de compression orientées à 0° par rapport à l'axe 18. Dans ce premier mode de réalisation, on pourra prévoir des surépaisseurs 78 suivant la direction 13 dans la platine au niveau des orifices 50. Ces surépaisseurs pourront conduire à des épaisseurs totales comprises entre 8 et 17 mm. Les surépaisseurs constituent ainsi des bossages autour des orifices 50. On pourra également prévoir des nervures 80 reliant ces surépaisseurs au corps de l'absorbeur. Les renforts constitués par les surépaisseurs 78 et les nervures 80 réduisent les risques d'arrachement par cisaillement en cas d'effort ou de choc. On observe en particulier que les points de fixation les plus sollicités parmi les orifices 50 sont les points situés au-dessus, au voisinage de l'anneau, car les cas de charge les plus pénalisants sont les efforts vers le bas. Un deuxième mode de réalisation de la poutre selon l'invention est illustré aux figures 4 à 6. Celui-ci diffère du précédent essentiellement par la position de l'insert 6 par rapport à la poutre. Ainsi, dans le présent exemple, l'absorbeur 10 recevant l'insert 6 présente une cavité centrale 64, la face avant 46 de l'absorbeur étant absente. Le logement est formé en direction de l'arrière du véhicule à partir de la face 42 qui constitue le fond de cette cavité 64. Comme on le voit en particulier sur la figure 5, l'insert s'étend cette fois en vue en plan à l'intérieur du rectangle formé par les quatre orifices 50. La figure 6 illustre la poutre avec son absorbeur en vue arrière. On observe que l'absorbeur est en fait évidé entre sa paroi principale et la paroi formant le logement 16. Des entretoises 66 orientées radialement par rapport à l'axe 18 du logement sont prévues pour conférer à l'ensemble la rigidité nécessaire. Ces entretoises sont en l'espèce au nombre de six. On observe sur les figures 4 à 6 que l'absorbeur est prolongé en direction de l'extrémité longitudinale de la poutre par un corps secondaire d'absorbeur 68 présentant une face avant obturée et formant un caisson. Un troisième mode de réalisation est illustré aux figures 7 à 8. Dans celui-ci, chaque absorbeur 10 est formé par un prolongement de la poutre vers l'arrière du véhicule et par un réseau de nervures 70 formé par une série de nervures s'étendant suivant la direction de marche du véhicule et une autre série de nervures croisant les précédentes et s'étendant transversalement à cette direction de marche. Toutes les nervures sont en l'espèce chacune inscrites dans un plan vertical en ayant une forme plane. Dans ce mode de réalisation, l'insert 6 est cette fois fixé au barreau et non à l'absorbeur 10. La face avant du barreau présente à cette fin un évidement 72 et le barreau comprend deux parois 74 présentant en vue en plan une forme en V. La pointe du V est dirigée vers l'arrière du véhicule, les parois s'étendant chacune dans un plan vertical et ayant chacune une forme plane. De même que dans les précédents modes de réalisation, l'insert 6 est disposé avec son axe 18 s'étendant dans un plan horizontal suivant la direction de marche du véhicule. Dans ce troisième mode de réalisation, le barreau a un profil transversal en H de sorte qu'il présente une paroi avant 82, une paroi arrière 84 et entre celles-ci, une paroi 86. Les parois 82 et 84 sont essentiellement planes et verticales et s'étendent en regard l'une de l'autre. La paroi 86 est essentiellement horizontale et s'étend de la paroi 82 à la paroi 84 en étant légèrement ondulée de la paroi 82 à la paroi 84. Comme on le voit dans ces différents modes de réalisation, la position de l'insert de remorquage est choisie pour être proche des points de fixation de la poutre à la structure du véhicule. L'invention n'empêche pas par ailleurs que la poutre remplisse de façon satisfaisante les cahiers des charges habituels concernant le choc parking et le choc réparabilité. L'avantage de la réalisation du logement d'insert au moyen d'un vérin mobile est qu'on évite la création d'une zone de soudure de matière qui sinon crée immanquablement une zone de faiblesse dans la pièce. Par le procédé de compactage précité, la zone recevant l'insert présente une répartition de fibres de renfort homogène avec de bonnes performances mécaniques. On pourra prévoir suivant les cas que le vérin de compactage est déplacé vers l'avant ou vers l'arrière pour la formation du logement. Bien entendu, on pourra apporter à l'invention de nombreuses modifications sans sortir du cadre de celle-ci. On pourra prévoir que la poutre est constituée en plusieurs matériaux thermoplastiques ou thermodurs. Il pourra s'agir d'un pare-choc arrière. 6 was initially filled with material. This is then driven out by the compacting cylinder. This excess material is still hot and is able to creep to go and lodge in the rest of the room. In the present example, the displacement of the jack to produce the housing is carried out in the direction of the front by reference to the vehicle in the direction 13. The mold is then opened and the beam is removed from the mold. The formation of the housing by means of the movable cylinder constitutes a web of material at the level of the housing 16 transversely to the latter. This fabric can be drilled in recovery before installing the insert. Once the part has left the mold, the insert 6 is mounted in the beam while the latter is still hot, that is to say at a temperature substantially higher than room temperature. This provides a certain amount of mounting clearance between the beam and the insert. Subsequently, the material on cooling tightens on the insert. The insert is placed so that the collar 32 extends against the rear face of the plate 12 opposite to a possible tensile force. This therefore gives it a good bearing surface on the beam in the event of traction. The faces 28 and 30 of the insert with their edges form a guide zone which makes it possible to limit the torque on the ring once it has been received in the insert, in the presence of forces which are not oriented along the line 'axis 18. We then proceed to a crimping operation of the insert on the beam. FIG. 9 is thus illustrated in the half-view extending to the left of the axis 18 the insert in its form before crimping, and in the half-view extending to the right the insert in its form after crimping. This crimping consists in this case of crushing by folding the end region 34 of the insert so that it extends radially projecting from the face 20 and comes to bear against the front face 42 of the plate. A bead is thus formed which makes it possible to respond to compression circumstances oriented at 0 ° relative to the axis 18. In this first embodiment, provision may be made for extra thicknesses 78 in the direction 13 in the plate at the orifices. 50. These extra thicknesses may lead to total thicknesses between 8 and 17 mm. The extra thicknesses thus constitute bosses around the orifices 50. It is also possible to provide ribs 80 connecting these extra thicknesses to the body of the absorber. The reinforcements formed by the extra thicknesses 78 and the ribs 80 reduce the risks of tearing by shearing in the event of effort or impact. It is observed in particular that the most stressed fixing points among the orifices 50 are the points located above, in the vicinity of the ring, because the most penalizing load cases are the downward forces. A second embodiment of the beam according to the invention is illustrated in Figures 4 to 6. This differs from the previous essentially by the position of the insert 6 relative to the beam. Thus, in the present example, the absorber 10 receiving the insert 6 has a central cavity 64, the front face 46 of the absorber being absent. The housing is formed in the direction of the rear of the vehicle from the face 42 which constitutes the bottom of this cavity 64. As can be seen in particular in FIG. 5, the insert extends this time in plan view inside the rectangle formed by the four orifices 50. FIG. 6 illustrates the beam with its absorber in rear view. It is observed that the absorber is in fact hollowed out between its main wall and the wall forming the housing 16. Spacers 66 oriented radially with respect to the axis 18 of the housing are provided to give the assembly the necessary rigidity. There are six of these spacers in this case. It can be seen in FIGS. 4 to 6 that the absorber is extended in the direction of the longitudinal end of the beam by a secondary body of absorber 68 having a closed front face and forming a box. A third embodiment is illustrated in Figures 7 to 8. In it, each absorber 10 is formed by an extension of the beam towards the rear of the vehicle and by a network of ribs 70 formed by a series of ribs s' extending along the direction of travel of the vehicle and another series of ribs crossing the previous ones and extending transversely to this direction of travel. All the ribs are in this case each inscribed in a vertical plane having a planar shape. In this embodiment, the insert 6 is this time fixed to the bar and not to the absorber 10. The front face of the bar has for this purpose a recess 72 and the bar comprises two walls 74 having in plan view a shape in V. The tip of the V is directed towards the rear of the vehicle, the walls each extending in a vertical plane and each having a planar shape. As in the previous embodiments, the insert 6 is arranged with its axis 18 extending in a horizontal plane along the direction of travel of the vehicle. In this third embodiment, the bar has a transverse profile in H so that it has a front wall 82, a rear wall 84 and between these, a wall 86. The walls 82 and 84 are essentially plane and vertical and lie opposite each other. The wall 86 is essentially horizontal and extends from the wall 82 to the wall 84 while being slightly wavy from the wall 82 to the wall 84. As can be seen in these different embodiments, the position of the towing insert is chosen to be close to the points of attachment of the beam to the vehicle structure. The invention does not however prevent the beam from satisfactorily filling the usual specifications relating to the parking impact and the repairability impact. The advantage of making the insert housing by means of a movable cylinder is that it avoids the creation of a zone of material welding which otherwise inevitably creates a zone of weakness in the part. By the aforementioned compacting process, the area receiving the insert has a homogeneous distribution of reinforcing fibers with good mechanical performance. Depending on the case, provision may be made for the compacting cylinder to be moved forwards or backwards to form the housing. Of course, many modifications can be made to the invention without departing from the scope thereof. Provision may be made for the beam to be made up of several thermoplastic or thermoset materials. It could be a rear bumper.

Claims

REVENDICATIONS
1. Pare-choc (2) pour véhicule, comprenant une poutre (4) comportant au moins un matériau synthétique, caractérisé en ce qu'il comprend un insert (6) de réception d'un anneau de remorquage (40).1. Bumper (2) for a vehicle, comprising a beam (4) comprising at least one synthetic material, characterized in that it comprises an insert (6) for receiving a towing ring (40).
2. Pare-choc selon la revendication précédente, caractérisé en ce que l'insert (6) est fixé directement à la poutre (4). 2. Bumper according to the preceding claim, characterized in that the insert (6) is fixed directly to the beam (4).
3. Pare-choc selon l'une quelconque des revendications précédentes, caractérisé en ce que l'insert (6) est reçu dans un logement (16) en matériau synthétique.3. Bumper according to any one of the preceding claims, characterized in that the insert (6) is received in a housing (16) made of synthetic material.
4. Pare-choc selon la revendication précédente, caractérisé en ce que le matériau synthétique est en contact avec l'insert (6) dans l'intégralité du logement (16).4. Bumper according to the preceding claim, characterized in that the synthetic material is in contact with the insert (6) in the entire housing (16).
5. Pare-choc selon l'une quelconque des revendications 3 à 4, caractérisé en ce que le logement (16) a une forme de manchon.5. Bumper according to any one of claims 3 to 4, characterized in that the housing (16) has the shape of a sleeve.
6. Pare-choc selon l'une quelconque des revendications précédentes, caractérisé en ce que l'insert (6) présente une collerette (32).6. Bumper according to any one of the preceding claims, characterized in that the insert (6) has a flange (32).
7. Pare-choc selon l'une quelconque des revendications précédentes, caractérisé en ce que l'insert (6) présente une extrémité sertie7. Bumper according to any one of the preceding claims, characterized in that the insert (6) has a crimped end
(34).(34).
8. Pare-choc selon l'une quelconque des revendications précédentes, caractérisé en ce que l'insert (6) comprend un métal. 8. Bumper according to any one of the preceding claims, characterized in that the insert (6) comprises a metal.
9. Pare-choc selon l'une quelconque des revendications précédentes, caractérisé en ce que la poutre (4) est constituée d'au moins un matériau synthétique. 9. Bumper according to any one of the preceding claims, characterized in that the beam (4) consists of at least one synthetic material.
10. Pare-choc selon l'une quelconque des revendications précédentes, caractérisé en ce que la poutre (4) comprend des fibres de renfort.10. Bumper according to any one of the preceding claims, characterized in that the beam (4) comprises reinforcing fibers.
11. Pare-choc selon l'une quelconque des revendications précédentes, caractérisé en ce que l'insert (6) est fixé à un absorbeur (10) de la poutre (4).11. Bumper according to any one of the preceding claims, characterized in that the insert (6) is fixed to an absorber (10) of the beam (4).
12. Pare-choc selon l'une quelconque des revendications 1 à 10, caractérisé en ce que l'insert (6) est fixé à un barreau (5) de la poutre (4).12. Bumper according to any one of claims 1 to 10, characterized in that the insert (6) is fixed to a bar (5) of the beam (4).
13. Procédé de fabrication d'un pare-choc (2) pour véhicule, caractérisé en ce qu'on dispose un insert (6) de réception d'un anneau de remorquage (40) dans un pare-choc comprenant une poutre (4) comportant au moins un matériau synthétique.13. A method of manufacturing a bumper (2) for a vehicle, characterized in that there is an insert (6) for receiving a towing ring (40) in a bumper comprising a beam (4 ) comprising at least one synthetic material.
14. Procédé selon la revendication précédente, caractérisé en ce qu'on fixe l'insert (6) directement à la poutre (4).14. Method according to the preceding claim, characterized in that the insert (6) is fixed directly to the beam (4).
15. Procédé selon l'une quelconque des revendications 13 ou 14, caractérisé en ce qu'on chauffe le ou chaque matériau destiné à former la poutre, puis on l'installe dans un moule (60).15. Method according to any one of claims 13 or 14, characterized in that the or each material intended to form the beam is heated, then it is installed in a mold (60).
16. Procédé selon la revendication précédente, caractérisé en ce qu'on comprime le ou chaque matériau lors de la fermeture du moule (60). 16. Method according to the preceding claim, characterized in that the or each material is compressed when the mold (60) is closed.
17. Procédé selon l'une quelconque des revendications 15 à 16, caractérisé en ce qu'on déplace une pièce de dégagement (62) dans le moule pour former un logement (16). 17. Method according to any one of claims 15 to 16, characterized in that one moves a release piece (62) in the mold to form a housing (16).
18. Procédé selon la revendication précédente, caractérisé en ce que le déplacement a lieu après une fermeture du moule.18. Method according to the preceding claim, characterized in that the displacement takes place after a closing of the mold.
19. Procédé selon l'une quelconque des revendications 17 à 18, caractérisé en ce qu'on dispose l'insert (6) dans le logement (16).19. Method according to any one of claims 17 to 18, characterized in that the insert (6) is placed in the housing (16).
20. Procédé selon l'une quelconque des revendications 17 à 19, caractérisé en ce qu'on dispose l'insert (6) dans le logement (16) tandis que la poutre (4) a une température supérieure à la température ambiante. 20. Method according to any one of claims 17 to 19, characterized in that the insert (6) is placed in the housing (16) while the beam (4) has a temperature higher than ambient temperature.
21. Procédé selon l'une quelconque des revendications 13 à 20, caractérisé en ce qu'on sertit l'insert (6) sur la poutre (4).21. Method according to any one of claims 13 to 20, characterized in that the insert (6) is crimped onto the beam (4).
22. Moule de fabrication d'une poutre (4) de pare-chocs (2) pour véhicule, comprenant un châssis (67), caractérisé en ce qu'il comprend une pièce de dégagement (62) montée mobile dans une cavité (61) du moule par rapport au châssis. 22. Mold for manufacturing a beam (4) of a bumper (2) for a vehicle, comprising a chassis (67), characterized in that it comprises a release part (62) mounted movably in a cavity (61 ) of the mold with respect to the chassis.
EP05732908A 2004-02-27 2005-02-28 Vehicle bumper including a tow ring insert Withdrawn EP1725413A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0401996A FR2866830B1 (en) 2004-02-27 2004-02-27 BUMPER FOR VEHICLE COMPRISING AN INSERT FOR RECEIVING A TOWING RING
PCT/FR2005/000469 WO2005087519A1 (en) 2004-02-27 2005-02-28 Vehicle bumper including a tow ring insert

Publications (1)

Publication Number Publication Date
EP1725413A1 true EP1725413A1 (en) 2006-11-29

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ID=34834098

Family Applications (1)

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EP05732908A Withdrawn EP1725413A1 (en) 2004-02-27 2005-02-28 Vehicle bumper including a tow ring insert

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US (1) US20070182170A1 (en)
EP (1) EP1725413A1 (en)
KR (1) KR20070005646A (en)
CN (1) CN1946577A (en)
FR (1) FR2866830B1 (en)
WO (1) WO2005087519A1 (en)

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KR20070005646A (en) 2007-01-10
FR2866830B1 (en) 2008-08-08
CN1946577A (en) 2007-04-11
US20070182170A1 (en) 2007-08-09
FR2866830A1 (en) 2005-09-02
WO2005087519A1 (en) 2005-09-22

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