EP2379374A1 - Pedestrian impact absorber mobile knuckle mount - Google Patents

Pedestrian impact absorber mobile knuckle mount

Info

Publication number
EP2379374A1
EP2379374A1 EP09803845A EP09803845A EP2379374A1 EP 2379374 A1 EP2379374 A1 EP 2379374A1 EP 09803845 A EP09803845 A EP 09803845A EP 09803845 A EP09803845 A EP 09803845A EP 2379374 A1 EP2379374 A1 EP 2379374A1
Authority
EP
European Patent Office
Prior art keywords
hood
skin
vehicle
cover
zone
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Withdrawn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
EP09803845A
Other languages
German (de)
French (fr)
Inventor
Laurent Brefort
Eric Michel Guy Narcy
Saïd Benane
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2379374A1 publication Critical patent/EP2379374A1/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Withdrawn legal-status Critical Current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
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B60R2021/343—Protecting non-occupants of a vehicle, e.g. pedestrians using deformable body panel, bodywork or components

Definitions

  • MOBILE HINGE HOLDER IMPACT SHOCK ABSORBER.
  • the present invention relates to a reinforcing element intended to equip a motor-car hood to enable said hood to be fixed to a hood hinge, said element being of the movable carrier type.
  • a mobile knuckle support consists of a substantially flat reinforcing plate and is intended to be attached in a hood of the car, at the joints of the hood with the chassis of the vehicle, in order to ensure the fixing of said bonnet hinges attached to the frame.
  • Car manufacturers are constantly seeking to improve the safety of their vehicles and / or preserve the physical integrity of their passengers and pedestrians who might be involved in a crash. New passive safety devices are thus developed.
  • the bonnet of a vehicle contributes very significantly to the passive safety of the vehicle since it is very often the part that is struck by the pedestrian during an impact, especially the head of the pedestrian.
  • the present invention aims to remedy all or part of the various disadvantages mentioned above.
  • the object of the present invention is to provide a new passive safety element that can be integrated at low cost in a hood for a motor vehicle.
  • the present invention relates to a reinforcing element intended to equip a motor vehicle hood to enable said hood to be fixed to a hood hinge, said element being of the movable carrier type, characterized in that said element comprises less a damping zone whose geometry is adapted to deform and absorb some of the stresses experienced by said element during an impact.
  • an element according to the present invention makes it possible to confer on the hinge zones of a hood a passive safety function while avoiding the addition of new automobile parts in comparison with a conventional vehicle not equipped with the element according to the invention.
  • the equipment of a vehicle with the element according to the present invention therefore does not significantly change the mass of the vehicle relative to the same vehicle equipped with a conventional mobile knuckle support.
  • the element according to the present invention integrates into the pre-existing hollow bodies of a vehicle hood, it is not necessary to adapt the vehicle to free space for the implantation of said element. .
  • the damping zone comprises at least one deformable bulge of material.
  • the element further comprises at least one substantially flat fixing zone intended to serve as a support means for fixing said cover to the hood hinge.
  • an element according to the present invention can be attached at a fastening area to the bonnet liner and a movable knuckle.
  • the damping zone has a general convex shape delimiting a cavity.
  • the cavity in a transverse section of said element, has a curved profile, trapezoidal or trapezoidal stages.
  • notches are provided in the damping zone. Notches in the form of damping make it possible to improve the deformation of said damping zone and the absorption of kinetic energy released during an impact. The number and the positioning of said notches can be optimized by calculation.
  • the element is monoblock.
  • the present invention also relates to a hood for a motor vehicle comprising a skin forming the outer surface of said hood, a lining forming the inner surface of the hood, and at least one element according to the present invention, characterized in that the element is arranged between the skin and the lining.
  • the present invention provides a hood for an automobile having a passive safety function in case of impact, at the joints thereof, without requiring special adaptation of the vehicle to be equipped.
  • a pre-existing vehicle may be subsequently equipped with a hood according to the invention without particular adaptation or significant change in mass thereof.
  • the element is in connection with the inner face of the skin.
  • a bead of adhesive material provides the connection between the skin and the element.
  • a bead of sticky material makes it possible to ensure the correct positioning of the element when it is mounted in a hood according to the invention.
  • the cavity is located between the liner and said element according to the invention or opens out of the liner.
  • Figure 1 shows a perspective view of the front portion of a vehicle equipped with a hood according to the present invention
  • Figure 2 shows a partial view of a hood equipped with an element according to the present invention positioned on a lining of a hood according to the invention
  • Figure 3 shows a schematic cross sectional view of a hood according to the present invention
  • Figures 4a, 4b and 4c show schematic cross-sectional views of the damping area of an element according to the present invention.
  • Transversal refers to the reference vehicle where the term “longitudinal” characterizes a direction substantially oriented along the length of the vehicle and where “transverse” characterizes a direction substantially oriented along its width.
  • a hood 1 according to the invention comprises an element 2 as represented in FIG. 2.
  • Two elements 2 according to the invention are assembled on the hood 1 at the level of the articulation zones 3 of said hood 1 represented in FIG. element 2 fitted to the cover 1 is not visible from the outside since it is located under the skin 4 of said cover 1 constituting the outer surface thereof.
  • An element 2 according to the present invention may be integral and comprises a damping zone 5 situated in the median part of the element 2 and whose geometry is adapted to deform and absorb a part of the stresses experienced by said element 2 during 'a shock with a pedestrian.
  • the element 2, as represented in FIG. 2 also comprises two attachment zones 6, 7 each intended to serve as support for means for fastening said cover 1 to a movable knuckle, not shown, ensuring the articulation of said cover 1 with the vehicle.
  • the damping area 5 consists of a bulge of material capable of deforming to absorb a portion of the kinetic energy released in case of impact, with a pedestrian for example. In order to facilitate the deformation, this damping zone 5 may have a generally convex shape delimiting a cavity 8.
  • the cavity 8 may have a profile such as those represented in FIGS. 4a to 4c, for example a curved profile (Figure 4a), trapezoidal (Figure 4b) or even trapezoidal stages (Figure 4c). These geometries are however not limiting.
  • notches 9 can be formed in the said damping zone 5. Their number and their positions can then be optimized by computer calculations.
  • the present invention also relates to a hood 1 equipped with an element 2 as described above.
  • this element 2 are chosen so that it can be inserted between the skin 4 of the cover 1 and a lining 10 forming the inner surface of said cover 1.
  • Figure 2 the skin 4 of said cover 1 has been omitted to simplify the understanding of the invention.
  • the skin 4 and the lining 10 define a hollow body 1 1 in which is disposed the element 2.
  • the element 2 has the advantage for automakers to be able to equip a pre-existing vehicle hood without having to adapt the shape of the skin and / or lining.
  • the cavity 8 defined by the element 2 is located between the lining 10 and the element 2 or even, in a form not shown, the cavity 8 opens out of the lining 10.
  • the cavity 8 can be filled with a flexible material such as a foam to improve the kinetic energy absorption.
  • a gap 12 of small thickness formed inside the hollow body 11 between the element 2 and the skin 4.
  • a bead of adhesive material 13 may be disposed on the element 2 to ensure a connection of said element 2 with the skin 4 of said cover 1 to facilitate the setting of the different parts constituting the cover 1 during its assembly.
  • the present invention describes an element 2 which makes it possible to confer on the articulation zones 3 of a hood 1 a passive safety function while avoiding the addition of new automobile parts in comparison with a conventional vehicle not equipped with the element 2 according to the invention.
  • the equipment of a vehicle with the element 2 does not significantly change the mass of the vehicle compared to a similar vehicle equipped with a conventional mobile knuckle support.
  • the element 2 can be integrated into the pre-existing hollow body 1 1 of a hood 1 for a vehicle, it is not necessary to adapt a vehicle to free space for the implantation of said element 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Superstructure Of Vehicle (AREA)

Abstract

The present invention relates to a reinforcing element (2) intended to be fitted to a bonnet (hood) (1) of an automotive vehicle so as to allow said bonnet (hood) (1) to be attached to a bonnet (hood) hinge, said element (2) being of the mobile knuckle mount type, characterized in that said element (2) comprises at least one absorbing zone (5) the geometry of which is tailored to deform and absorb some of the stress experienced by said element (2) in an impact. In particular, the absorbing zone (5) comprises at least one deformable bulge of material and the element (2) further comprises at least one substantially planar fixing zone (6, 7) intended to act as a mount for means of attaching said bonnet (hood) (1) to the bonnet (hood) hinge.

Description

SUPPORT DE CHARNON MOBILE AMORTISSEUR DE CHOC PIETON. MOBILE HINGE HOLDER IMPACT SHOCK ABSORBER.
La présente invention se rapporte à un élément de renfort destiné à équiper un capot automobile pour permettre la fixation dudit capot à une charnière de capot, ledit élément étant de type support de charnon mobile.The present invention relates to a reinforcing element intended to equip a motor-car hood to enable said hood to be fixed to a hood hinge, said element being of the movable carrier type.
De façon traditionnelle, un support de charnon mobile est constitué d'une plaque de renfort sensiblement plane et est destiné à être rapporté dans un capot de voiture, au niveau des articulations du capot avec le châssis du véhicule, afin d'assurer la fixation dudit capot aux charnières fixées au châssis. Les constructeurs automobiles cherchent constamment à améliorer la sécurité de leurs véhicules et/ou préserver l'intégrité physique de leurs passagers et des piétons qui seraient éventuellement impliqués dans un choc. De nouveaux dispositifs de sécurité passive sont ainsi développés. Dans ce contexte, le capot d'un véhicule contribue de façon très importante à la sécurité passive du véhicule puisqu'il constitue très souvent la partie qui est heurtée par le piéton lors d'un choc, en particulier la tête du piéton.In the traditional way, a mobile knuckle support consists of a substantially flat reinforcing plate and is intended to be attached in a hood of the car, at the joints of the hood with the chassis of the vehicle, in order to ensure the fixing of said bonnet hinges attached to the frame. Car manufacturers are constantly seeking to improve the safety of their vehicles and / or preserve the physical integrity of their passengers and pedestrians who might be involved in a crash. New passive safety devices are thus developed. In this context, the bonnet of a vehicle contributes very significantly to the passive safety of the vehicle since it is very often the part that is struck by the pedestrian during an impact, especially the head of the pedestrian.
Outre les capots déformables pour atténuer les chocs tels que décrits, par exemple, dans la demande de brevet EP 1 829 769, il est connu, par exemple de la demande FR 2 896 216, d'équiper un capot de véhicule d'un dispositif actif de déplacement de la partie arrière du capot du véhicule d'une position de fermeture à une position surélevée en cas de choc avec un piéton. Un tel dispositif nécessite, outre un charnon mobile intermédiaire complexe au niveau de chaque articulation du capot, l'implantation supplémentaire dans le véhicule de moyens de verrouillage et de détection de choc. Un tel dispositif est efficace mais encombrant et très coûteux. Or la tendance actuelle des constructeurs d'automobiles est d'offrir un maximum de prestations avec des coups restreints et une masse globale du véhicule maitrisée. Par ailleurs, un tel dispositif comporte des éléments électroniques qui sont susceptibles de pannes. Enfin l'assemblage d'un tel dispositif est complexe et le véhicule doit être adapté pour être équipé d'un tel dispositif.In addition to the deformable covers to mitigate shocks as described, for example, in patent application EP 1 829 769, it is known, for example from application FR 2 896 216, to equip a vehicle hood with a device active movement of the rear portion of the vehicle hood from a closed position to an elevated position in the event of impact with a pedestrian. Such a device requires, in addition to a complex intermediate mobile knuckle at each articulation of the hood, the additional implantation in the vehicle of locking means and shock detection. Such a device is effective but cumbersome and very expensive. However, the current trend of automakers is to offer maximum benefits with limited hits and a global mass of the vehicle under control. Moreover, such a device comprises electronic elements that are susceptible to failures. Finally, the assembly of such a device is complex and the vehicle must be adapted to be equipped with such a device.
La présente invention a pour objet de remédier en tout ou partie aux différents inconvénients cités précédemment.The present invention aims to remedy all or part of the various disadvantages mentioned above.
Dans ce contexte technique, la présente invention a pour objet de fournir un nouvel élément de sécurité passive susceptible d'être intégré à faible coût dans un capot pour véhicule automobile. A cet effet, la présente invention se rapporte à un élément de renfort destiné à équiper un capot automobile pour permettre la fixation dudit capot à une charnière de capot, ledit élément étant de type support de charnon mobile, caractérisé en ce que ledit élément comporte au moins une zone d'amortissement dont la géométrie est adaptée pour se déformer et absorber une partie des contraintes subies par ledit élément lors d'un choc.In this technical context, the object of the present invention is to provide a new passive safety element that can be integrated at low cost in a hood for a motor vehicle. For this purpose, the present invention relates to a reinforcing element intended to equip a motor vehicle hood to enable said hood to be fixed to a hood hinge, said element being of the movable carrier type, characterized in that said element comprises less a damping zone whose geometry is adapted to deform and absorb some of the stresses experienced by said element during an impact.
Ainsi, un élément selon la présente invention permet de conférer aux zones d'articulation d'un capot une fonction de sécurité passive tout en évitant l'ajout de nouvelles pièces automobiles en comparaison avec un véhicule classique non équipé de l'élément selon l'invention. L'équipement d'un véhicule avec l'élément selon la présente invention ne change donc pas de façon significative la masse du véhicule par rapport à un même véhicule équipé d'un support de charnon mobile classique.Thus, an element according to the present invention makes it possible to confer on the hinge zones of a hood a passive safety function while avoiding the addition of new automobile parts in comparison with a conventional vehicle not equipped with the element according to the invention. invention. The equipment of a vehicle with the element according to the present invention therefore does not significantly change the mass of the vehicle relative to the same vehicle equipped with a conventional mobile knuckle support.
Par ailleurs, puisque l'élément selon la présente invention s'intégre dans les corps creux préexistant d'un capot pour véhicule, il n'est pas nécessaire d'adapter le véhicule afin de libérer de l'espace pour l'implantation dudit élément.Moreover, since the element according to the present invention integrates into the pre-existing hollow bodies of a vehicle hood, it is not necessary to adapt the vehicle to free space for the implantation of said element. .
Enfin, l'élément selon la présente invention présente une alternative peu coûteuse aux dispositifs actifs de l'art antérieur. Dans un mode de réalisation de l'invention, la zone d'amortissement comporte au moins un renflement déformable de matière.Finally, the element according to the present invention presents an inexpensive alternative to the active devices of the prior art. In one embodiment of the invention, the damping zone comprises at least one deformable bulge of material.
Dans un mode de réalisation de l'invention, l'élément comporte en outre au moins une zone de fixation sensiblement plane destinée à servir de support à des moyens de fixation dudit capot à la charnière de capot. Ainsi, un élément selon la présente invention peut être fixé au niveau d'une zone de fixation à la doublure du capot et à un charnon mobile.In one embodiment of the invention, the element further comprises at least one substantially flat fixing zone intended to serve as a support means for fixing said cover to the hood hinge. Thus, an element according to the present invention can be attached at a fastening area to the bonnet liner and a movable knuckle.
Dans un mode de réalisation de l'invention, la zone d'amortissement a une allure générale convexe délimitant une cavité.In one embodiment of the invention, the damping zone has a general convex shape delimiting a cavity.
Dans un mode de réalisation de l'invention, selon une coupe tranversale dudit élément, la cavité a un profil bombé, trapézoïdal ou trapézoïdal à étages.In one embodiment of the invention, in a transverse section of said element, the cavity has a curved profile, trapezoidal or trapezoidal stages.
Dans un mode de réalisation de l'invention, des encoches sont ménagées dans la zone d'amortissement. Des encoches dans la forme d'amortissement permettent d'améliorer la déformation de ladite zone d'amortissement et l'absorbtion d'énergie cinétique libérée lors d'un choc. Le nombre et le positionnement desdites encoches peuvent être optimisés par calcul.In one embodiment of the invention, notches are provided in the damping zone. Notches in the form of damping make it possible to improve the deformation of said damping zone and the absorption of kinetic energy released during an impact. The number and the positioning of said notches can be optimized by calculation.
Dans un mode de réalisation de l'invention, l'élément est monobloc.In one embodiment of the invention, the element is monoblock.
La présente invention se rapporte également à un capot pour véhicule automobile comprenant une peau formant la surface extérieure dudit capot, une doublure formant la surface intérieure du capot, et au moins un élément selon la présente invention, caractérisé en ce que l'élément est disposé entre la peau et la doublure. Ainsi, la présente invention propose un capot pour automobile présentant une fonction passive de sécurité en cas de choc, au niveau des articulations de celui-ci, sans nécessiter d'adaptation particulière du véhicule destiné à être équipé. En particulier, un véhicule préxistant peut être équipé ultérieurement d'un capot selon l'invention sans adaptation particulière ni changement de masse significative de celui-ci. Dans un mode de réalisation de l'invention, l'élément est en liaison avec la face intérieure de la peau.The present invention also relates to a hood for a motor vehicle comprising a skin forming the outer surface of said hood, a lining forming the inner surface of the hood, and at least one element according to the present invention, characterized in that the element is arranged between the skin and the lining. Thus, the present invention provides a hood for an automobile having a passive safety function in case of impact, at the joints thereof, without requiring special adaptation of the vehicle to be equipped. In particular, a pre-existing vehicle may be subsequently equipped with a hood according to the invention without particular adaptation or significant change in mass thereof. In one embodiment of the invention, the element is in connection with the inner face of the skin.
Dans un mode de réalisation de l'invention, un cordon de matière collante assure la liaison entre la peau et l'élément. Un cordon de matière collante permet de s'assurer du positionnement correct de l'élément lors de son montage dans un capot selon l'invention.In one embodiment of the invention, a bead of adhesive material provides the connection between the skin and the element. A bead of sticky material makes it possible to ensure the correct positioning of the element when it is mounted in a hood according to the invention.
Dans un mode de réalisation de l'invention, la cavité est située entre la doublure et ledit élément selon l'invention ou débouche de la doublure. Enfin la présente invention se rapporte à un véhicule équipé d'un capot selon la présente invention. L'invention sera mieux comprise à l'aide de la description détaillée qui est exposée ci-dessous en regard des dessins annexés dans lesquels :In one embodiment of the invention, the cavity is located between the liner and said element according to the invention or opens out of the liner. Finally, the present invention relates to a vehicle equipped with a hood according to the present invention. The invention will be better understood with the aid of the detailed description which is set out below with reference to the appended drawings in which:
La Figure 1 représente une vue en perspective de la partie avant d'un véhicule équipé d'un capot selon la présente invention ; la Figure 2 représente une vue partielle d'un capot équipé d'un élément selon la présente invention positionné sur une doublure d'un capot selon l'invention ; la Figure 3 représente une vue en coupe transversale schématique d'un capot selon la présente invention ; les Figures 4a, 4b et 4c représentent les profils schématiques en coupe transversale de la zone d'amortissement d'un élément selon la présente invention. Dans la description qui suit les termes « longitudinal » etFigure 1 shows a perspective view of the front portion of a vehicle equipped with a hood according to the present invention; Figure 2 shows a partial view of a hood equipped with an element according to the present invention positioned on a lining of a hood according to the invention; Figure 3 shows a schematic cross sectional view of a hood according to the present invention; Figures 4a, 4b and 4c show schematic cross-sectional views of the damping area of an element according to the present invention. In the description that follows the terms "longitudinal" and
« transversal » se réfèrent au réferentiel véhicule où le terme « longitudinal » caractérise une direction sensiblement orientée suivant la longueur du véhicule et où « transversal » caractérise une direction sensiblement orientée suivant sa largeur."Transversal" refers to the reference vehicle where the term "longitudinal" characterizes a direction substantially oriented along the length of the vehicle and where "transverse" characterizes a direction substantially oriented along its width.
Un capot 1 selon l'invention comprend un élément 2 tel que représenté sur la Figure 2. Deux éléments 2 selon l'invention sont assemblés sur le capot 1 aux niveaux des zones d'articulation 3 dudit capot 1 représentées à la Figure 1. Un élément 2 équipant le capot 1 n'est pas visible de l'extérieur puisqu'il se situe sous la peau 4 dudit capot 1 constituant la surface extérieure de celui-ci.A hood 1 according to the invention comprises an element 2 as represented in FIG. 2. Two elements 2 according to the invention are assembled on the hood 1 at the level of the articulation zones 3 of said hood 1 represented in FIG. element 2 fitted to the cover 1 is not visible from the outside since it is located under the skin 4 of said cover 1 constituting the outer surface thereof.
Un élément 2 selon la présente invention peut être monobloc et comporte une zone d'amortissement 5 située dans la partie médiane de l'élément 2 et dont la géométrie est adaptée pour se déformer et absorber une partie des contraintes subies par ledit élément 2 lors d'un choc avec un piéton. L'élément 2, comme représenté sur la Figure 2, comporte également deux zones de fixation 6, 7 destinées chacune à servir de support à des moyens de fixation dudit capot 1 à un charnon mobile, non représenté, assurant l'articulation dudit capot 1 avec le véhicule. La zone d'amortissement 5 est constituée d'un renflement de matière susceptible de se déformer pour absorber une partie de l'énergie cinétique libérée en cas de choc, avec un piéton par exemple. Afin de faciliter la déformation, cette zone d'amortissement 5 peut avoir une allure générale convexe délimitant une cavité 8. Selon une coupe transversale dudit élément 2, la cavité 8 peut présenter un profil tel que ceux représentés aux Figures 4a à 4c, par exemple un profil bombé (Figure 4a), trapézoidal (Figure 4b) ou bien encore trapézoïdal à étages (Figure 4c). Ces géométries ne sont toutefois pas limitatives.An element 2 according to the present invention may be integral and comprises a damping zone 5 situated in the median part of the element 2 and whose geometry is adapted to deform and absorb a part of the stresses experienced by said element 2 during 'a shock with a pedestrian. The element 2, as represented in FIG. 2, also comprises two attachment zones 6, 7 each intended to serve as support for means for fastening said cover 1 to a movable knuckle, not shown, ensuring the articulation of said cover 1 with the vehicle. The damping area 5 consists of a bulge of material capable of deforming to absorb a portion of the kinetic energy released in case of impact, with a pedestrian for example. In order to facilitate the deformation, this damping zone 5 may have a generally convex shape delimiting a cavity 8. According to a cross-section of said element 2, the cavity 8 may have a profile such as those represented in FIGS. 4a to 4c, for example a curved profile (Figure 4a), trapezoidal (Figure 4b) or even trapezoidal stages (Figure 4c). These geometries are however not limiting.
Pour faciliter la déformation de la zone d'amortissement 5 et l'absorption d'énergie en cas de choc, des encoches 9 peuvent être ménagées dans ladite zone d'amortissement 5. Leur nombre et leurs positions peuvent alors être optimisés par calculs informatiques.To facilitate the deformation of the damping zone 5 and the energy absorption in the event of impact, notches 9 can be formed in the said damping zone 5. Their number and their positions can then be optimized by computer calculations.
La présente invention concerne également un capot 1 équipé d'un élément 2 tel que décrit précédement. Ainsi, la forme et les dimensions de cet élément 2 sont choisies de façon à ce qu'il puisse être inséré entre la peau 4 du capot 1 et une doublure 10 formant la surface intérieure dudit capot 1. Sur la Figure 2, la peau 4 dudit capot 1 a été omise afin de simplifier la compréhension de l'invention.The present invention also relates to a hood 1 equipped with an element 2 as described above. Thus, the shape and dimensions of this element 2 are chosen so that it can be inserted between the skin 4 of the cover 1 and a lining 10 forming the inner surface of said cover 1. Figure 2, the skin 4 of said cover 1 has been omitted to simplify the understanding of the invention.
Ainsi que le montre la Figure 3, qui représente une vue en coupe d'un capot 1 selon l'invention suivant un axe transversal passant par la cavité 8 de l'élément 2, la peau 4 et la doublure 10 définissent un corps creux 1 1 dans lequel est disposé l'élément 2. L'élément 2 présente l'avantage pour les constructeurs d'automobiles de pouvoir équiper un capot de véhicule préxistant sans avoir à adapter la forme de la peau et/ou de la doublure.As shown in Figure 3, which shows a sectional view of a hood 1 according to the invention along a transverse axis passing through the cavity 8 of the element 2, the skin 4 and the lining 10 define a hollow body 1 1 in which is disposed the element 2. The element 2 has the advantage for automakers to be able to equip a pre-existing vehicle hood without having to adapt the shape of the skin and / or lining.
La cavité 8 définie par l'élément 2 se situe entre la doublure 10 et l'élément 2 ou bien encore, dans une forme non représentée, la cavité 8 débouche de la doublure 10. Dans une forme de réalisation non représentée, la cavité 8 peut être remplie d'un matériau souple tel qu'une mousse afin d'améliorer l'absorption d'énergie cinétique. Par ailleurs, comme représenté sur la Figure 3, il peut exister un intervalle 12 de faible épaisseur ménagé à l'intérieur du corps creux 1 1 , entre l'élément 2 et la peau 4. Cependant, un cordon de matière collante 13 peut être disposé sur l'élément 2 afin d'assurer une liaison dudit élément 2 avec la peau 4 dudit capot 1 afin de faciliter le calage des différentes parties constituant le capot 1 lors de son assemblage.The cavity 8 defined by the element 2 is located between the lining 10 and the element 2 or even, in a form not shown, the cavity 8 opens out of the lining 10. In an embodiment not shown, the cavity 8 can be filled with a flexible material such as a foam to improve the kinetic energy absorption. Moreover, as shown in FIG. 3, there may be a gap 12 of small thickness formed inside the hollow body 11 between the element 2 and the skin 4. However, a bead of adhesive material 13 may be disposed on the element 2 to ensure a connection of said element 2 with the skin 4 of said cover 1 to facilitate the setting of the different parts constituting the cover 1 during its assembly.
En cas de choc impliquant un véhicule équipé d'un capot 1 selon l'invention et d'un piéton, si ce dernier vient percuter le capot 1 , la peau 4 se déforme en se rapprochant de la doublure 10, le corps creux 1 1 diminue de volume et l'intervalle 12 éventuel disparait durant cette déformation. La zone d'amortissement 5 de l'élément 2 situé dans le corps creux 1 1 , en contact avec la peau 4, se déforme également du fait des contraintes exercées par celle-ci. Cette déformation de la zone d'amortissement 5 permet une dissipation de l'énergie cinétique libérée par le choc avec le piéton, ce qui en définitive amoindrit la violence du choc pour le piéton.In the event of an impact involving a vehicle equipped with a hood 1 according to the invention and a pedestrian, if it strikes the bonnet 1, the skin 4 deforms while approaching the lining 10, the hollow body 11 decreases in volume and the possible interval 12 disappears during this deformation. The damping zone 5 of the element 2 situated in the hollow body 1 1, in contact with the skin 4, is also deformed due to the stresses exerted by the latter. This deformation of the damping zone 5 allows a dissipation of the kinetic energy released by the impact with the pedestrian, which ultimately reduces the violence of the shock for the pedestrian.
Ainsi, la présente invention décrit un élément 2 qui permet de conférer aux zones d'articulation 3 d'un capot 1 une fonction de sécurité passive tout en évitant l'ajout de nouvelles pièces automobiles en comparaison avec un véhicule classique non équipé de l'élément 2 selon l'invention. L'équipement d'un véhicule avec l'élément 2 ne change donc pas de façon significative la masse du véhicule par rapport à un véhicule semblable équipé d'un support de charnon mobile classique. Par ailleurs, puisque l'élément 2 peut s'intégrer dans le corps creux 1 1 préexistant d'un capot 1 pour véhicule, il n'est pas nécessaire d'adapter un véhicule afin de libérer de l'espace pour l'implantation dudit élément 2.Thus, the present invention describes an element 2 which makes it possible to confer on the articulation zones 3 of a hood 1 a passive safety function while avoiding the addition of new automobile parts in comparison with a conventional vehicle not equipped with the element 2 according to the invention. The equipment of a vehicle with the element 2 does not significantly change the mass of the vehicle compared to a similar vehicle equipped with a conventional mobile knuckle support. Furthermore, since the element 2 can be integrated into the pre-existing hollow body 1 1 of a hood 1 for a vehicle, it is not necessary to adapt a vehicle to free space for the implantation of said element 2.
Bien entendu les exemples de réalisations évoqués ci-dessus ne présentent aucun caractère limitatif et d'autres détails et améliorations peuvent être apportés à l'élément selon l'invention, sans pour autant sortir du cadre de l'invention où d'autres formes de l'élément peuvent être réalisées. Of course the examples of embodiments mentioned above are not limiting in nature and further details and improvements can be made to the element according to the invention, without departing from the scope of the invention where other forms of the element can be realized.

Claims

REVENDICATIONS
1. Capot (1 ) pour véhicule automobile comprenant une peau (4) formant la surface extérieure dudit capot (1 ), une doublure (10) formant la surface intérieure du capot (1 ), et au moins un élément (2) de renfort destiné à équiper un capot (1 ) automobile pour permettre la fixation dudit capot (1 ) à une charnière de capot, ledit élément (2) étant de type support de charnon mobile, caractérisé en ce que ledit élément (2) est disposé entre la peau (4) et la doublure (10) et comporte au moins une zone d'amortissement (5) dont la géométrie est adaptée pour se déformer et absorber une partie des contraintes subies par ledit élément (2) lors d'un choc.Motor vehicle hood (1) comprising a skin (4) forming the outer surface of said hood (1), a lining (10) forming the inner surface of the hood (1), and at least one reinforcing element (2) intended to equip an automobile hood (1) to enable said hood (1) to be fastened to a hood hinge, said element (2) being of a movable knuckle support type, characterized in that said element (2) is arranged between the skin (4) and the lining (10) and comprises at least one damping zone (5) whose geometry is adapted to deform and absorb some of the stresses experienced by said element (2) during an impact.
2. Capot (1 ) selon la revendication 1 , caractérisé en ce que la zone d'amortissement (5) de l'élément (2) de renfort comporte au moins un renflement déformable de matière.2. Hood (1) according to claim 1, characterized in that the damping zone (5) of the element (2) of reinforcement comprises at least one deformable bulge material.
3. Capot (1 ) selon la revendication 1 ou 2, caractérisé en ce que l'élément (2) de renfort comporte en outre au moins une zone de fixation (6, 7) sensiblement plane destinée à servir de support à des moyens de fixation dudit capot (1 ) à la charnière de capot.3. Hood (1) according to claim 1 or 2, characterized in that the reinforcing element (2) further comprises at least one substantially planar fixing zone (6, 7) intended to serve as support for fixing said cover (1) to the hood hinge.
4. Capot (1 ) selon l'une des revendications 1 à 3, caractérisé en ce que la zone d'amortissement (5) de l'élément (2) de renfort a une allure générale convexe délimitant une cavité (8).4. Hood (1) according to one of claims 1 to 3, characterized in that the damping zone (5) of the element (2) of reinforcement has a generally convex shape delimiting a cavity (8).
5. Capot (1 ) selon la revendication 4, caractérisé en ce que selon une coupe transversale dudit élément (2), la cavité a un profil bombé, trapézoïdal ou trapézoïdal à étages.5. Cover (1) according to claim 4, characterized in that in a cross section of said element (2), the cavity has a curved profile, trapezoidal or trapezoidal stages.
6. Capot (1 ) selon l'une des revendications 1 à 5, caractérisé en ce que des encoches (9) sont ménagées dans la zone d'amortissement (5) de l'élément (2) de renfort.6. Cover (1) according to one of claims 1 to 5, characterized in that notches (9) are formed in the damping region (5) of the element (2) of reinforcement.
7. Capot (1 ) selon l'une des revendications 1 à 6, caractérisé en ce que l'élément (2) est en liaison avec la face intérieure de la peau (4). 7. Hood (1) according to one of claims 1 to 6, characterized in that the element (2) is in connection with the inner face of the skin (4).
8. Capot (1 ) selon la revendication 7, caractérisé en ce qu'un cordon de matière collante (13) assure la liaison entre la peau (4) et l'élément (2).8. Hood (1) according to claim 7, characterized in that a bead of adhesive material (13) provides the connection between the skin (4) and the element (2).
9. Véhicule automobile comprenant un capot (1 ) pour véhicule automobile selon l'une quelconque des revendications 1 à 8. 9. Motor vehicle comprising a hood (1) for a motor vehicle according to any one of claims 1 to 8.
EP09803845A 2009-01-19 2009-12-11 Pedestrian impact absorber mobile knuckle mount Withdrawn EP2379374A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0950299A FR2941203B1 (en) 2009-01-19 2009-01-19 MOBILE HINGE HOLDER IMPACT SHOCK ABSORBER.
PCT/FR2009/052502 WO2010081949A1 (en) 2009-01-19 2009-12-11 Pedestrian impact absorber mobile knuckle mount

Publications (1)

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EP2379374A1 true EP2379374A1 (en) 2011-10-26

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EP09803845A Withdrawn EP2379374A1 (en) 2009-01-19 2009-12-11 Pedestrian impact absorber mobile knuckle mount

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EP (1) EP2379374A1 (en)
CN (1) CN102282049B (en)
BR (1) BRPI0916497A2 (en)
FR (1) FR2941203B1 (en)
WO (1) WO2010081949A1 (en)

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GB2530026B (en) * 2014-09-05 2018-02-28 Jaguar Land Rover Ltd Vehicle bonnet
US10821933B2 (en) 2019-01-30 2020-11-03 Toyota Motor Engineering & Manufacturing North America, Inc. Deformable automotive noise and vibration seal for pedestrian protection

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BRPI0916497A2 (en) 2018-02-06
WO2010081949A1 (en) 2010-07-22
CN102282049B (en) 2014-04-30
FR2941203A1 (en) 2010-07-23
FR2941203B1 (en) 2011-04-01
CN102282049A (en) 2011-12-14

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