WO2021209697A1 - Motor vehicle having a reinforcement at the front pillar for a frontal impact with low overlap - Google Patents

Motor vehicle having a reinforcement at the front pillar for a frontal impact with low overlap Download PDF

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Publication number
WO2021209697A1
WO2021209697A1 PCT/FR2021/050432 FR2021050432W WO2021209697A1 WO 2021209697 A1 WO2021209697 A1 WO 2021209697A1 FR 2021050432 W FR2021050432 W FR 2021050432W WO 2021209697 A1 WO2021209697 A1 WO 2021209697A1
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WO
WIPO (PCT)
Prior art keywords
reinforcement
body structure
wing
floor
vehicle
Prior art date
Application number
PCT/FR2021/050432
Other languages
French (fr)
Inventor
Baye Diaw
Bernard PATOUT
Sebastien Meurant
Nicolas Tessier
Original Assignee
Psa 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 Psa Automobiles Sa filed Critical Psa Automobiles Sa
Priority to EP21718932.3A priority Critical patent/EP4136012A1/en
Priority to CN202180028658.1A priority patent/CN115397721A/en
Publication of WO2021209697A1 publication Critical patent/WO2021209697A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2036—Floors or bottom sub-units in connection with other superstructure subunits the subunits being side panels, sills or pillars

Definitions

  • TITLE MOTOR VEHICLE WITH FRONT FOOT REINFORCEMENT FOR FRONTAL IMPACT WITH LOW COVER
  • the invention relates to the field of motor vehicles, and more particularly to the body structure of a motor vehicle.
  • a motor vehicle comprises a body structure, with a floor and two longitudinal rocker beams positioned on either side, and laterally, on the floor. Each beam extends from a front leg of the vehicle to a rear leg.
  • the published patent document FR 3038288 A1 discloses a motor vehicle floor with reinforcements which reduce deformation in the event of a side impact.
  • This floor further comprises a central tunnel, the two reinforcements being positioned on each side of the central tunnel and parallel to the floor. But these reinforcements, in addition to being bulky, do not, due to their central position on the floor, improve the behavior of the vehicle during a frontal impact, especially at low overlap.
  • the object of the invention is to overcome at least one of the drawbacks of the above-mentioned state of the art. More particularly, the invention aims to improve the behavior of a motor vehicle during a frontal impact with low coverage.
  • the subject of the invention is a motor vehicle body structure comprising: a floor, and two longitudinal sill beams, on either side of the floor, each extending from a front foot to a rear foot , remarkable in that said body structure further comprises: a reinforcement forming a stamped section of L, fixed to the floor and to one of the two longitudinal sill beams, at the level of the front pillar.
  • the L-shaped section of the stamping comprises a first wing fixed against the floor and a second wing fixed against the longitudinal sill beam.
  • the first wing of the stamping has a length in a main horizontal direction perpendicular to a longitudinal direction of the vehicle which is greater than three times a length of the second wing in a vertical main direction perpendicular to the longitudinal direction.
  • the longitudinal sill beam has a vertical side wall on one side of the interior of the vehicle, the second wing of the stamping being fixed against said wall.
  • the L-shaped section of the stamping further comprises an intermediate portion inclined relative to each of the first and second wings.
  • the reinforcement has at least one stiffening rib.
  • At least one stiffening rib extends continuously from the first wing to the second wing.
  • the L-section stamping is fixed by screwing.
  • the longitudinal sill beam comprises a curved wall forming the front foot, the reinforcement being located in line with said curved wall.
  • the reinforcement is located on a lateral side corresponding to the driving position of the vehicle.
  • the measures of the invention are advantageous in that they make it possible to improve the behavior of a motor vehicle during a frontal impact with low coverage. More particularly, the invention makes it possible to reinforce the longitudinal sill beam and the floor of the vehicle against said shocks. Thus, the reinforcement makes it possible both to improve the stability of the connection between the sill beam and the floor, and to stabilize the beam in a direction longitudinal to the vehicle. In addition, the risks of shearing and tearing of the floor, following a frontal impact with low coverage, are limited. The risk of decoupling between the beam and the floor is also reduced. Also, the sill beam is maintained, which enables it to be able to withstand a bending torque exerted around the Z axis or around the Y axis.
  • the invention also makes it possible to resist an intrusion from the 'passenger compartment, more particularly when this intrusion follows the X axis or the Y axis.
  • the presence of the inclined intermediate portion between the two wings of the reinforcement makes it possible, moreover, to facilitate the manufacture of the reinforcement according to the invention, and more particularly to facilitate the formation of the ribs of the reinforcement.
  • the ribs make it possible to increase the stiffness of the reinforcement without requiring the addition of additional walls which could be harmful in particular in terms of available space in the vehicle. More particularly, the ribs increase the stiffness of the reinforcement in torsion, bending and shear. The footprint of the vehicle following the installation of the reinforcement is minimal, which allows the original body structure of the vehicle to be retained without making major modifications.
  • the mass of the vehicle is not increased, due in particular to the presence of ribs which limit the addition of mass provided by the reinforcement.
  • the fixing of the reinforcement in the vehicle is preferably carried out by fixing screws, it is therefore easy to implement and allows a certain modularity according to the countries or territories of destination of the vehicles.
  • the reinforcement according to the invention is produced by techniques known to those skilled in the art, and using materials also known and mastered by those skilled in the art.
  • FIG 1 is a perspective view of a motor vehicle body structure according to the invention.
  • FIG 2 is an enlarged view of part of the structure of Figure 1, at the level of a reinforcement making the connection between a sill beam and a vehicle floor;
  • FIG 3 is an enlarged view around the reinforcement of Figure 2.
  • the arrow X designates a longitudinal direction of movement of the vehicle in forward gear.
  • the Y arrow indicates a direction transverse to the X arrow, from left to right.
  • the arrow Z denotes a direction transverse to a plane passing through the arrows X and Y, oriented from the bottom to the top.
  • Figure 1 is a perspective view of a body structure of a motor vehicle according to the invention.
  • the vehicle 1 comprises at least the body structure 3 according to the invention, which defines, on an interior side 3A, a passenger compartment 5.
  • the passenger compartment 5 comprises a driving position 9 positioned at one of the lateral sides 7 of the vehicle. 1.
  • the driving position 9 is shown on a left lateral side 7A, but it can also be positioned, in certain vehicles, on a right lateral side 7B (this case not being shown in these figures ).
  • the body structure 3 further comprises a floor 11 framed laterally by two longitudinal sill beams 13. Each beam 13 extends from a front leg 15 to a rear leg 17 of the vehicle 1.
  • Figures 2 and 3 show two enlarged views of the connection between the beam and the vehicle floor, and including the reinforcement.
  • the reinforcement 19 is advantageously positioned on the lateral side 7 corresponding to the driving position (visible in FIG. 1), in this figure it is more specifically the left lateral side 7A.
  • This reinforcement 19 is a stamped with an L-section comprising two wings (19A, 19B), a first wing 19A fixed to the floor 11 and a second wing 19B fixed to the longitudinal beam 13 of the sill.
  • This reinforcement 19 is more specifically fixed at the level of the front foot 15 of the vehicle 1.
  • the longitudinal beam 13 comprises a curved wall 13B at the front which forms the front foot 15, the reinforcement 19 being more precisely located to the right of the curved wall 13B.
  • the second wing 19B of the reinforcement 19 is fixed against a vertical side wall 13A of the longitudinal beam 13 of the corresponding sill.
  • the first wing 19A of the reinforcement 19 has a length LA, in a main horizontal direction perpendicular to the longitudinal direction X.
  • the second wing 19B of the reinforcement 19 has a length LB in a vertical main direction perpendicular to the longitudinal direction. X.
  • the length LA of the first wing 19A is greater than three times the length LB of the second wing 19B of the reinforcement 19.
  • the second wing 19B has a width IB greater than a width IA of the first wing 19A.
  • the reinforcement 19 further comprises an inclined intermediate portion 19C relative to the first and second wings (19A, 19B).
  • This reinforcement 19 also comprises at least one stiffening rib 19D.
  • the reinforcement 19 comprises several stiffening ribs 19D, these ribs 19D serving to provide additional stiffness in torsion, bending and shearing which would otherwise require a greater stamping thickness.
  • the rib or ribs 19D extend continuously from the first wing 19A to the second wing 19B.
  • the reinforcement 19 is advantageously fixed to the body structure 3 by screwing.
  • the reinforcement 19 is made of metallic materials, such as steel.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

Body structure (3) for a motor vehicle (1), comprising: a floor (11), and two longitudinal lower body beams (13), on either side of the floor (11), each extending from a front pillar (15) to a rear pillar, said body structure (3) further comprising: a reinforcement (19) forming an L-section pressing attached to the floor (11) and to one of the two longitudinal lower body beams (13), at the front pillar (15).

Description

DESCRIPTION DESCRIPTION
TITRE : VÉHICULE AUTOMOBILE AVEC RENFORT AU PIED AVANT POUR UN CHOC FRONTAL A FAIBLE RECOUVREMENT TITLE: MOTOR VEHICLE WITH FRONT FOOT REINFORCEMENT FOR FRONTAL IMPACT WITH LOW COVER
Domaine technique Technical area
La présente invention revendique la priorité de la demande française 2003758 déposée le 15 Avril 2020 dont le contenu (texte, dessins et revendications) est ici incorporé par référence. The present invention claims the priority of French application 2003758 filed on April 15, 2020, the content of which (text, drawings and claims) is incorporated here by reference.
L’invention a trait au domaine des véhicules automobiles, et plus particulièrement à la structure de carrosserie d’un véhicule automobile. The invention relates to the field of motor vehicles, and more particularly to the body structure of a motor vehicle.
Technique antérieure Prior art
Un véhicule automobile comprend une structure de carrosserie, avec un plancher et deux poutres longitudinales de bas de caisse positionnées de part et d’autre, et latéralement, au plancher. Chaque poutre s’étend depuis un pied avant du véhicule vers un pied arrière. A motor vehicle comprises a body structure, with a floor and two longitudinal rocker beams positioned on either side, and laterally, on the floor. Each beam extends from a front leg of the vehicle to a rear leg.
Le document de brevet publié FR 3038288 A1 divulgue un plancher de véhicule automobile avec des renforts qui réduisent les déformations en cas de choc latéral. Ce plancher comprend, en outre, un tunnel central, les deux renforts étant positionnés de chaque côté du tunnel central et parallèlement au plancher. Mais ces renforts, outre d’être encombrants, ne permettent pas, de par leur position centrale au plancher, d’améliorer le comportement du véhicule lors d’un choc frontal, notamment à faible recouvrement. The published patent document FR 3038288 A1 discloses a motor vehicle floor with reinforcements which reduce deformation in the event of a side impact. This floor further comprises a central tunnel, the two reinforcements being positioned on each side of the central tunnel and parallel to the floor. But these reinforcements, in addition to being bulky, do not, due to their central position on the floor, improve the behavior of the vehicle during a frontal impact, especially at low overlap.
Or les chocs frontaux à faible recouvrement, c’est-à-dire les chocs qui recouvrent 25% de la surface du pare-chocs avant d’un véhicule automobile, sont des références dans certains pays. Il est donc utile d’obtenir une bonne note à ce type de choc, en particulier dans les pays ou territoires pour lesquels ce type de choc est une référence. However, low overlap frontal impacts, that is to say impacts which cover 25% of the surface of the front bumper of a motor vehicle, are benchmarks in some countries. It is therefore useful to obtain a good rating for this type of shock, in particular in countries or territories for which this type of shock is a reference.
Exposé de l'invention Disclosure of the invention
L’invention a pour objectif de pallier au moins un des inconvénients de l’état de la technique susmentionné. Plus particulièrement, l’invention a pour objectif d’améliorer le comportement d’un véhicule automobile lors d’un choc frontal à faible recouvrement. The object of the invention is to overcome at least one of the drawbacks of the above-mentioned state of the art. More particularly, the invention aims to improve the behavior of a motor vehicle during a frontal impact with low coverage.
L’invention a pour objet une structure de carrosserie de véhicule automobile comprenant : un plancher, et deux poutres longitudinales de bas de caisse, de part et d’autre du plancher, s’étendant chacune depuis un pied avant jusqu’à un pied arrière, remarquable en ce que ladite structure de carrosserie comprend, en outre : un renfort formant un embouti de section en L, fixé au plancher et à une des deux poutres longitudinales de bas de caisse, au niveau du pied avant. The subject of the invention is a motor vehicle body structure comprising: a floor, and two longitudinal sill beams, on either side of the floor, each extending from a front foot to a rear foot , remarkable in that said body structure further comprises: a reinforcement forming a stamped section of L, fixed to the floor and to one of the two longitudinal sill beams, at the level of the front pillar.
Selon un mode avantageux de l’invention, la section en L de l’embouti comprend une première aile fixée contre le plancher et une deuxième aile fixée contre la poutre longitudinale de bas de caisse. According to an advantageous embodiment of the invention, the L-shaped section of the stamping comprises a first wing fixed against the floor and a second wing fixed against the longitudinal sill beam.
Selon un mode avantageux de l’invention, la première aile de l’embouti présente une longueur suivant une direction principale horizontale perpendiculaire à une direction longitudinale du véhicule qui est supérieure à trois fois une longueur de la deuxième aile suivant une direction principale verticale perpendiculaire à la direction longitudinale. According to an advantageous embodiment of the invention, the first wing of the stamping has a length in a main horizontal direction perpendicular to a longitudinal direction of the vehicle which is greater than three times a length of the second wing in a vertical main direction perpendicular to the longitudinal direction.
Selon un mode avantageux de l’invention, la poutre longitudinale de bas de caisse présente une paroi latérale verticale d’un côté intérieur du véhicule, la deuxième aile de l’embouti étant fixée contre ladite paroi. According to an advantageous embodiment of the invention, the longitudinal sill beam has a vertical side wall on one side of the interior of the vehicle, the second wing of the stamping being fixed against said wall.
Selon un mode avantageux de l’invention, la section en L de l’embouti comprend, en outre, une portion intermédiaire inclinée par rapport à chacune des première et deuxième ailes. According to an advantageous embodiment of the invention, the L-shaped section of the stamping further comprises an intermediate portion inclined relative to each of the first and second wings.
Selon un mode avantageux de l’invention, le renfort présente au moins une nervure de rigidification. According to an advantageous embodiment of the invention, the reinforcement has at least one stiffening rib.
Selon un mode avantageux de l’invention, l’au moins une nervure de rigidification s’étend de manière continue de la première aile à la deuxième aile. According to an advantageous embodiment of the invention, at least one stiffening rib extends continuously from the first wing to the second wing.
Selon un mode avantageux de l’invention, l’embouti de section en L est fixé par vissage. According to an advantageous embodiment of the invention, the L-section stamping is fixed by screwing.
Selon un mode avantageux de l’invention, la poutre longitudinale de bas de caisse comprend une paroi courbée formant le pied avant, le renfort étant situé au droit de ladite paroi courbée. Selon un mode avantageux de l’invention, le renfort est situé à un côté latéral correspondant au poste de conduite du véhicule. According to an advantageous embodiment of the invention, the longitudinal sill beam comprises a curved wall forming the front foot, the reinforcement being located in line with said curved wall. According to an advantageous embodiment of the invention, the reinforcement is located on a lateral side corresponding to the driving position of the vehicle.
Les mesures de l’invention sont intéressantes en ce qu’elles permettent d’améliorer le comportement d’un véhicule automobile lors d’un choc frontal à faible recouvrement. Plus particulièrement, l’invention permet de renforcer la poutre longitudinale de bas de caisse et le plancher du véhicule contre lesdits chocs. Ainsi, le renfort permet à la fois d’améliorer la stabilité de la liaison entre la poutre de bas de caisse et le plancher, et de stabiliser la poutre dans une direction longitudinale au véhicule. De plus, les risques de cisaillement et de déchirement du plancher, suite à un choc frontal à faible recouvrement, sont limités. Le risque d’un découplage entre la poutre et le plancher est également diminué. Aussi, la poutre de bas de caisse est maintenue, ce qui lui permet de pouvoir résister à un couple de flexion exercé autour de l’axe Z ou autour de l’axe Y. L’invention permet également de résister à une intrusion de l’habitacle, plus particulièrement lorsque cette intrusion suit l’axe X ou l’axe Y. La présence de la portion intermédiaire inclinée entre les deux ailes du renfort permet, en outre, de faciliter la fabrication du renfort selon l’invention, et plus particulièrement de faciliter la formation des nervures du renfort. Les nervures permettent d’augmenter la raideur du renfort sans nécessiter l’ajout de parois supplémentaires qui pourrait être délétère notamment en termes de place disponible dans le véhicule. Plus particulièrement, les nervures augmentent la raideur du renfort en torsion, en flexion et en cisaillement. L’encombrement du véhicule suite à l’installation du renfort est minimal, ce qui permet de garder la structure de carrosserie initiale du véhicule sans réaliser de modifications importantes. De plus, la masse du véhicule n’est pas augmentée, du fait notamment de la présence de nervures qui limitent l’ajout de masse apportée par le renfort. La fixation du renfort dans le véhicule est préférentiellement réalisée par des vis de fixation, elle est donc facile à mettre en œuvre et permet une certaine modularité selon les pays ou territoires de destination des véhicules. Enfin, le renfort selon l’invention est réalisé par des techniques connues de l’homme du métier, et à l’aide de matériaux également connus et maîtrisés par l’homme du métier. The measures of the invention are advantageous in that they make it possible to improve the behavior of a motor vehicle during a frontal impact with low coverage. More particularly, the invention makes it possible to reinforce the longitudinal sill beam and the floor of the vehicle against said shocks. Thus, the reinforcement makes it possible both to improve the stability of the connection between the sill beam and the floor, and to stabilize the beam in a direction longitudinal to the vehicle. In addition, the risks of shearing and tearing of the floor, following a frontal impact with low coverage, are limited. The risk of decoupling between the beam and the floor is also reduced. Also, the sill beam is maintained, which enables it to be able to withstand a bending torque exerted around the Z axis or around the Y axis. The invention also makes it possible to resist an intrusion from the 'passenger compartment, more particularly when this intrusion follows the X axis or the Y axis. The presence of the inclined intermediate portion between the two wings of the reinforcement makes it possible, moreover, to facilitate the manufacture of the reinforcement according to the invention, and more particularly to facilitate the formation of the ribs of the reinforcement. The ribs make it possible to increase the stiffness of the reinforcement without requiring the addition of additional walls which could be harmful in particular in terms of available space in the vehicle. More particularly, the ribs increase the stiffness of the reinforcement in torsion, bending and shear. The footprint of the vehicle following the installation of the reinforcement is minimal, which allows the original body structure of the vehicle to be retained without making major modifications. In addition, the mass of the vehicle is not increased, due in particular to the presence of ribs which limit the addition of mass provided by the reinforcement. The fixing of the reinforcement in the vehicle is preferably carried out by fixing screws, it is therefore easy to implement and allows a certain modularity according to the countries or territories of destination of the vehicles. Finally, the reinforcement according to the invention is produced by techniques known to those skilled in the art, and using materials also known and mastered by those skilled in the art.
D’autres caractéristiques et avantages de la présente invention seront mieux compris à l’aide de la description et des dessins. Brève description des dessins Other features and advantages of the present invention will be better understood from the description and the drawings. Brief description of the drawings
[Fig 1] est une vue en perspective d’une structure de carrosserie de véhicule automobile selon l’invention ; [Fig 1] is a perspective view of a motor vehicle body structure according to the invention;
[Fig 2] est une vue agrandie d’une partie de la structure de la figure 1 , au niveau d’un renfort faisant la liaison entre une poutre de bas de caisse et un plancher du véhicule ; [Fig 2] is an enlarged view of part of the structure of Figure 1, at the level of a reinforcement making the connection between a sill beam and a vehicle floor;
[Fig 3] est une vue agrandie autour du renfort de la figure 2. [Fig 3] is an enlarged view around the reinforcement of Figure 2.
Description détaillée detailed description
Les exemples décrits ci-après sont donnés à titre indicatif, mais d’autres applications ou modes de réalisation de l’invention non-décrits peuvent être envisagés. La flèche X désigne une direction longitudinale de déplacement du véhicule en marche avant. La flèche Y désigne une direction transversale à la flèche X, depuis la gauche vers la droite. La flèche Z désigne une direction transversale à un plan passant par les flèches X et Y, orientée depuis le bas vers le haut. The examples described below are given as an indication, but other applications or embodiments of the invention not described can be considered. The arrow X designates a longitudinal direction of movement of the vehicle in forward gear. The Y arrow indicates a direction transverse to the X arrow, from left to right. The arrow Z denotes a direction transverse to a plane passing through the arrows X and Y, oriented from the bottom to the top.
La figure 1 est une vue en perspective d’une structure de carrosserie d’un véhicule automobile selon l’invention. Figure 1 is a perspective view of a body structure of a motor vehicle according to the invention.
Le véhicule 1 comprend au moins la structure de carrosserie 3 selon l’invention, qui délimite, sur un côté intérieur 3A, un habitacle 5. L’habitacle 5 comprend un poste de conduite 9 positionné à l’un des côtés latéraux 7 du véhicule 1. Sur cette figure, le poste de conduite 9 est représenté sur un côté latéral gauche 7A, mais il peut également être positionné, dans certains véhicules, sur un côté latéral droit 7B (ce cas de figure n’étant pas représenté sur ces figures). La structure de carrosserie 3 comprend, en outre, un plancher 11 encadré, latéralement, par deux poutres longitudinales 13 de bas de caisse. Chaque poutre 13 s’étend depuis un pied avant 15 jusqu’à un pied arrière 17 du véhicule 1. De façon à améliorer la résistance de la structure de carrosserie 3, et plus particulièrement, de façon à améliorer le comportement du plancher 11 et de la poutre longitudinale 13 correspondante suite à un choc frontal à faible recouvrement, il a été envisagé de rajouter un renfort sur la structure 3. Ce renfort sera visible et décrit aux figures 2 et 3. The vehicle 1 comprises at least the body structure 3 according to the invention, which defines, on an interior side 3A, a passenger compartment 5. The passenger compartment 5 comprises a driving position 9 positioned at one of the lateral sides 7 of the vehicle. 1. In this figure, the driving position 9 is shown on a left lateral side 7A, but it can also be positioned, in certain vehicles, on a right lateral side 7B (this case not being shown in these figures ). The body structure 3 further comprises a floor 11 framed laterally by two longitudinal sill beams 13. Each beam 13 extends from a front leg 15 to a rear leg 17 of the vehicle 1. So as to improve the strength of the body structure 3, and more particularly, so as to improve the behavior of the floor 11 and the corresponding longitudinal beam 13 following a frontal impact with low overlap, it was considered to add a reinforcement on the structure 3. This reinforcement will be visible and described in Figures 2 and 3.
Les figures 2 et 3 montrent deux vues agrandies de la liaison entre la poutre et le plancher de véhicule, et comprenant le renfort. Sur ces figures, le côté intérieur 3A de la structure de carrosserie 3 du véhicule 1 est visible. Le renfort 19 est avantageusement positionné du côté latéral 7 correspondant au poste de conduite (visible à la figure 1), sur cette figure il s’agit plus spécifiquement du côté latéral gauche 7A. Ce renfort 19 est un embouti avec une section en L comprenant deux ailes (19A, 19B), une première aile 19A fixée au plancher 11 et une deuxième aile 19B fixée à la poutre longitudinale 13 de bas de caisse. Ce renfort 19 est plus spécifiquement fixé au niveau du pied avant 15 du véhicule 1. En effet, la poutre longitudinale 13 comprend une paroi courbée 13B à l’avant qui forme le pied avant 15, le renfort 19 étant plus précisément situé au droit de la paroi courbée 13B. Plus préférentiellement, la deuxième aile 19B du renfort 19 est fixée contre une paroi latérale verticale 13A de la poutre longitudinale 13 de bas de caisse correspondante. Avantageusement, la première aile 19A du renfort 19 présente une longueur LA, suivant une direction principale horizontale perpendiculaire à la direction longitudinale X. De même, la deuxième aile 19B du renfort 19 présente une longueur LB suivant une direction principale verticale perpendiculaire à la direction longitudinale X. La longueur LA de la première aile 19A est supérieure à trois fois la longueur LB de la deuxième aile 19B du renfort 19. Avantageusement, la deuxième aile 19B présente une largeur IB supérieure à une largeur IA de la première aile 19A. Figures 2 and 3 show two enlarged views of the connection between the beam and the vehicle floor, and including the reinforcement. In these figures, the interior side 3A of the body structure 3 of the vehicle 1 is visible. The reinforcement 19 is advantageously positioned on the lateral side 7 corresponding to the driving position (visible in FIG. 1), in this figure it is more specifically the left lateral side 7A. This reinforcement 19 is a stamped with an L-section comprising two wings (19A, 19B), a first wing 19A fixed to the floor 11 and a second wing 19B fixed to the longitudinal beam 13 of the sill. This reinforcement 19 is more specifically fixed at the level of the front foot 15 of the vehicle 1. In fact, the longitudinal beam 13 comprises a curved wall 13B at the front which forms the front foot 15, the reinforcement 19 being more precisely located to the right of the curved wall 13B. More preferably, the second wing 19B of the reinforcement 19 is fixed against a vertical side wall 13A of the longitudinal beam 13 of the corresponding sill. Advantageously, the first wing 19A of the reinforcement 19 has a length LA, in a main horizontal direction perpendicular to the longitudinal direction X. Likewise, the second wing 19B of the reinforcement 19 has a length LB in a vertical main direction perpendicular to the longitudinal direction. X. The length LA of the first wing 19A is greater than three times the length LB of the second wing 19B of the reinforcement 19. Advantageously, the second wing 19B has a width IB greater than a width IA of the first wing 19A.
Le renfort 19 comprend, en outre, une portion intermédiaire inclinée 19C par rapport aux première et deuxième ailes (19A, 19B). Ce renfort 19 comprend également au moins une nervure de rigidification 19D. Avantageusement, le renfort 19 comprend plusieurs nervures de rigidifications 19D, ces nervures 19D servant à fournir une raideur supplémentaire en torsion, flexion et cisaillement qui nécessiterait, sinon, une épaisseur d’embouti plus grande. Avantageusement, la ou les nervures 19D s’étendent de manière continue de la première aile 19A à la deuxième aile 19B. Ainsi, la présence de la portion intermédiaire inclinée 19C va faciliter la formation des nervures 19D sur le renfort 19. Le renfort 19 est avantageusement fixé sur la structure de carrosserie 3 par vissage. De manière générale, le renfort 19 est réalisé dans des matériaux métalliques, tels que l’acier. The reinforcement 19 further comprises an inclined intermediate portion 19C relative to the first and second wings (19A, 19B). This reinforcement 19 also comprises at least one stiffening rib 19D. Advantageously, the reinforcement 19 comprises several stiffening ribs 19D, these ribs 19D serving to provide additional stiffness in torsion, bending and shearing which would otherwise require a greater stamping thickness. Advantageously, the rib or ribs 19D extend continuously from the first wing 19A to the second wing 19B. Thus, the presence of the inclined intermediate portion 19C will facilitate the formation of the ribs 19D on the reinforcement 19. The reinforcement 19 is advantageously fixed to the body structure 3 by screwing. Generally, the reinforcement 19 is made of metallic materials, such as steel.

Claims

REVENDICATIONS
[Revendication 1.] Structure de carrosserie (3) de véhicule automobile (1) comprenant : [Claim 1.] Body structure (3) of a motor vehicle (1) comprising:
- un plancher (11), et - a floor (11), and
- deux poutres longitudinales (13) de bas de caisse, de part et d’autre du plancher (11 ), s’étendant chacune depuis un pied avant (15) jusqu’à un pied arrière (17), caractérisée en ce que ladite structure de carrosserie (3) comprend, en outre : - two longitudinal beams (13) of the sill, on either side of the floor (11), each extending from a front leg (15) to a rear leg (17), characterized in that said body structure (3) further comprises:
- un renfort (19) formant un embouti de section en L, fixé au plancher (11) et à une des deux poutres longitudinales (13) de bas de caisse, au niveau du pied avant (15). - A reinforcement (19) forming a stamped section L, fixed to the floor (11) and to one of the two longitudinal beams (13) of the sill, at the level of the front foot (15).
[Revendication 2.] Structure de carrosserie (3) selon la revendication 1, caractérisée en ce que la section en L de l’embouti comprend une première aile (19A) fixée contre le plancher (11) et une deuxième aile (19B) fixée contre la poutre longitudinale (13) de bas de caisse. [Claim 2.] Body structure (3) according to claim 1, characterized in that the L-shaped section of the stamping comprises a first wing (19A) fixed against the floor (11) and a second wing (19B) fixed. against the longitudinal beam (13) of the sill.
[Revendication 3.] Structure de carrosserie (3) selon la revendication 2, caractérisée en ce que la première aile (19A) de l’embouti présente une longueur (LA) suivant une direction principale horizontale perpendiculaire à une direction longitudinale (X) du véhicule (1) qui est supérieure à trois fois une longueur (LB) de la deuxième aile (19B) suivant une direction principale verticale perpendiculaire à la direction longitudinale (X). [Claim 3.] Body structure (3) according to claim 2, characterized in that the first wing (19A) of the stamping has a length (LA) in a main horizontal direction perpendicular to a longitudinal direction (X) of the vehicle (1) which is greater than three times a length (LB) of the second wing (19B) in a vertical main direction perpendicular to the longitudinal direction (X).
[Revendication 4.] Structure de carrosserie (3) selon l’une des revendications 2 et[Claim 4.] Body structure (3) according to one of claims 2 and
3, caractérisée en ce que la poutre longitudinale (13) de bas de caisse présente une paroi latérale verticale (13A) d’un côté intérieur (3A) du véhicule (1), la deuxième aile (19B) de l’embouti étant fixée contre ladite paroi (13A). 3, characterized in that the longitudinal sill beam (13) has a vertical side wall (13A) on an interior side (3A) of the vehicle (1), the second wing (19B) of the stamped being fixed against said wall (13A).
[Revendication 5.] Structure de carrosserie (3) selon l’une des revendications 2 à[Claim 5.] Body structure (3) according to one of claims 2 to
4, caractérisée en ce que la section en L de l’embouti comprend, en outre, une portion intermédiaire inclinée (19C) par rapport à chacune des première et deuxième ailes (19A, 19B). 4, characterized in that the L-shaped section of the stamping further comprises an inclined intermediate portion (19C) with respect to each of the first and second wings (19A, 19B).
[Revendication 6.] Structure de carrosserie (3) selon l’une des revendications 1 à[Claim 6.] Body structure (3) according to one of claims 1 to
5, caractérisée en ce que le renfort (19) présente au moins une nervure de rigidification (19D). [Revendication 7.] Structure de carrosserie (3) selon l’une des revendications 2 à 5, et selon la revendication 6, caractérisée en ce que l’au moins une nervure de rigidification (19D) s’étend de manière continue de la première aile (19A) à la deuxième aile (19B). [Revendication 8.] Structure de carrosserie (3) selon l’une des revendications 1 à5, characterized in that the reinforcement (19) has at least one stiffening rib (19D). [Claim 7.] Body structure (3) according to one of claims 2 to 5, and according to claim 6, characterized in that the at least one stiffening rib (19D) extends continuously from the first wing (19A) to second wing (19B). [Claim 8.] Body structure (3) according to one of claims 1 to
7, caractérisée en ce que l’embouti de section en L est fixé par vissage. 7, characterized in that the L-section stamping is fixed by screwing.
[Revendication 9.] Structure de carrosserie (3) selon l’une des revendications 1 à[Claim 9.] Body structure (3) according to one of claims 1 to
8, caractérisée en ce que la poutre longitudinale (13) de bas de caisse comprend une paroi courbée (13B) formant le pied avant (15), le renfort (19) étant situé au droit de ladite paroi courbée (13B). 8, characterized in that the longitudinal sill beam (13) comprises a curved wall (13B) forming the front foot (15), the reinforcement (19) being located in line with said curved wall (13B).
[Revendication 10.] Structure de carrosserie (3) selon l’une des revendications 1 à 9, caractérisée en ce que le renfort (19) est situé à un côté latéral (7) correspondant au poste de conduite (9) du véhicule (1). [Claim 10.] Body structure (3) according to one of claims 1 to 9, characterized in that the reinforcement (19) is located at a lateral side (7) corresponding to the driving position (9) of the vehicle ( 1).
PCT/FR2021/050432 2020-04-15 2021-03-15 Motor vehicle having a reinforcement at the front pillar for a frontal impact with low overlap WO2021209697A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21718932.3A EP4136012A1 (en) 2020-04-15 2021-03-15 Motor vehicle having a reinforcement at the front pillar for a frontal impact with low overlap
CN202180028658.1A CN115397721A (en) 2020-04-15 2021-03-15 Motor vehicle with front pillar reinforcement for low-footprint frontal collision

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FRFR2003758 2020-04-15
FR2003758A FR3109357B1 (en) 2020-04-15 2020-04-15 MOTOR VEHICLE WITH FRONT FOOT REINFORCEMENT FOR LOW OVERHEAD FRONTAL IMPACT

Publications (1)

Publication Number Publication Date
WO2021209697A1 true WO2021209697A1 (en) 2021-10-21

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PCT/FR2021/050432 WO2021209697A1 (en) 2020-04-15 2021-03-15 Motor vehicle having a reinforcement at the front pillar for a frontal impact with low overlap

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CN (1) CN115397721A (en)
FR (1) FR3109357B1 (en)
WO (1) WO2021209697A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114802480B (en) * 2022-04-21 2023-06-09 东风柳州汽车有限公司 Vehicle body capable of lifting column bump and vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2003758A1 (en) 1968-03-13 1969-11-14 Schoeller & Co Kg Lightweight transportation pallet with foamed plastic
US4944553A (en) * 1989-06-30 1990-07-31 Chrysler Corporation Vehicle reinforcing structure
EP1116641A2 (en) * 2000-01-13 2001-07-18 Adam Opel Ag Front structure for a motor vehicle
US20100156146A1 (en) * 2008-12-19 2010-06-24 Honda Motor Co., Ltd. Floor structure for vehicle body
WO2013024219A1 (en) * 2011-08-17 2013-02-21 Peugeot Citroën Automobiles SA Motor vehicle body shell comprising a stiffening device
FR3038288A1 (en) 2015-07-02 2017-01-06 Peugeot Citroen Automobiles Sa FLOOR OF MOTOR VEHICLE

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2003758A1 (en) 1968-03-13 1969-11-14 Schoeller & Co Kg Lightweight transportation pallet with foamed plastic
US4944553A (en) * 1989-06-30 1990-07-31 Chrysler Corporation Vehicle reinforcing structure
EP1116641A2 (en) * 2000-01-13 2001-07-18 Adam Opel Ag Front structure for a motor vehicle
US20100156146A1 (en) * 2008-12-19 2010-06-24 Honda Motor Co., Ltd. Floor structure for vehicle body
WO2013024219A1 (en) * 2011-08-17 2013-02-21 Peugeot Citroën Automobiles SA Motor vehicle body shell comprising a stiffening device
FR3038288A1 (en) 2015-07-02 2017-01-06 Peugeot Citroen Automobiles Sa FLOOR OF MOTOR VEHICLE

Also Published As

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FR3109357A1 (en) 2021-10-22
CN115397721A (en) 2022-11-25
FR3109357B1 (en) 2024-04-12
EP4136012A1 (en) 2023-02-22

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