WO2015193566A1 - Side rail with constant modulus of inertia for motor vehicle - Google Patents

Side rail with constant modulus of inertia for motor vehicle Download PDF

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Publication number
WO2015193566A1
WO2015193566A1 PCT/FR2015/051244 FR2015051244W WO2015193566A1 WO 2015193566 A1 WO2015193566 A1 WO 2015193566A1 FR 2015051244 W FR2015051244 W FR 2015051244W WO 2015193566 A1 WO2015193566 A1 WO 2015193566A1
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WO
WIPO (PCT)
Prior art keywords
profile
vehicle
intermediate portion
section
sole
Prior art date
Application number
PCT/FR2015/051244
Other languages
French (fr)
Inventor
Frederic Coiffier
Franck KOPEC
Andre TING
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 WO2015193566A1 publication Critical patent/WO2015193566A1/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
    • B62D25/08—Front or rear portions
    • B62D25/082—Engine compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/14—Dashboards as superstructure sub-units

Definitions

  • the invention relates to the field of motor vehicles, more particularly to the field of motor vehicle structures. More particularly, the invention relates to two longitudinal beams extending parallel to each other along the vehicle, said beams being commonly called stretchers.
  • Vehicle stretchers commonly have a profile with a protrusion at the front apron of the passenger compartment. Indeed, the stretchers extend under the floor of the passenger compartment towards the front of the vehicle by describing a projection at the front of the floor, more precisely at the front apron of the passenger compartment, and then expand towards the front in the engine compartment.
  • An apron cross is commonly provided between the apron and the stretchers to ensure a satisfactory support. Because of this construction, the section of the stretcher is usually not constant, especially at the level of the projection. But this area may be subject to significant efforts, especially in case of impact to the front of the vehicle.
  • the published patent document FR 2 934 840 B1 discloses a system for attaching stretchers to a motor vehicle structure, this system essentially comprising an interface piece between each stretcher and the deck rail of the passenger compartment of the vehicle.
  • the interface piece includes locating and securing tabs that extend substantially longitudinally. They are intended to cooperate by engagement inside the section of the front portion of the stretchers. This means that these interface parts require the stretchers to present, at the rear of their front portions, an open section.
  • This fastening system therefore imposes a significant discontinuity of the section of the stretcher at the projection between the front portion in the engine compartment and the rear portion under the floor.
  • the teaching of this document therefore does not improve the intrinsic stiffness and resistance to deformation stretchers, especially at the jump along the front deck of the passenger compartment.
  • the object of the invention is to propose a stretcher design, in particular at its attachment to the apron, which overcomes at least one of the aforementioned drawbacks. More particularly, the invention aims to design stretcher which is more rigid and better to diffuse the mechanical stresses such as those of a front shock of the vehicle.
  • the invention relates to a longitudinal vehicle beam, comprising: a front portion intended to extend into the engine compartment of the vehicle; a rear portion intended to extend under the floor of the vehicle; and an intermediate portion between the front and rear portions and intended to be disposed at the front apron of the passenger compartment of the vehicle; remarkable in that the intermediate portion has on a majority of its length a closed perimeter and extends overlap along the front portion and / or the rear portion for assembly with said portion (s).
  • the covering may extend over more than 50 mm, preferably over more than 80 mm, more preferably over more than 100 mm.
  • the front, intermediate and / or rear portions are preferably bonded together by welding, more preferably by electrical resistance welding.
  • each of the front, intermediate and rear portions comprises a section whose section forms an open cavity, and a soleplate closing said cavity.
  • At least one, preferably each, of the profiles comprises two wings at the opening of the cavity, said wings contacting the corresponding sole.
  • the profile of the front portion extends at least partially in the cavity of the profile of the intermediate portion and / or the profile of the intermediate portion extends at least partially in the cavity of the profile. of the rear portion.
  • the sole of the front portion extends at least partially along the profile of the intermediate portion and / or the sole of the intermediate portion extends at least partially along the profile of the rear portion.
  • the profile of the front portion has a section C, the profile of the intermediate portion a U-section and / or the profile of the rear portion a U-shaped section.
  • the sole of the intermediate portion substantially horizontally contacts the upper face of the profile of the front portion and comprises two lateral and raised wings, said wings contacting the profile of the intermediate portion and the floor and / or the front apron of the vehicle.
  • the sole of the intermediate portion comprises a front wing intended to contact the front apron.
  • the section of the front, intermediate and rear portions is generally rectangular whose average width and average height do not vary by more than 20% over the extent of said portions.
  • the product of the average width by the average height of the section of the front, intermediate and rear portions does not vary by more than 20%, preferably 10%, over the extent of said portions.
  • it is the same for the inertia module along a transverse axis.
  • the invention also relates to a motor vehicle with a passenger compartment and comprising two longitudinal beams extending parallel to each other under the floor of the passenger compartment and in front of said passenger compartment; remarkable in that the beams are in accordance with the invention.
  • the rear portion extends mainly, preferably specifically, under the floor, the intermediate portion under the front apron and the front portion in the engine compartment.
  • the measurements of the invention are interesting in that they make it possible to produce a strut of the vehicle strut type which has continuity of material at its periphery and along the profile, this continuity conferring on the beam an increased resistance particularly in flexion. .
  • FIG. 1 is a perspective view of the front of a vehicle structure, illustrating the two shafts and the front apron;
  • FIG. 2 is a schematic side view of a stretcher according to the prior art and a stretcher according to the invention
  • FIG. 3 is a perspective view of the intermediate portion of the stretcher and its connection piece to the floor and deck of the vehicle;
  • FIG. 4 is another perspective view of the intermediate portion of the stretcher and its connection piece to the floor and the apron of the vehicle;
  • FIG. 5 is a schematic sectional representation of the stretcher according to the invention, at its front portion, its intermediate portion and at its rear portion;
  • FIG. 6 is a side view of the stretcher according to the invention.
  • Figure 1 illustrates the front of the structure 2 of a vehicle according to the state of the art.
  • the passenger compartment 4 of the vehicle and two beams 6 extending longitudinally parallel to one another under and in front of the passenger compartment 4, these beams being commonly called stretchers.
  • These stretchers 6 extend below the floor of the passenger compartment and along the front apron 8 of said passenger compartment.
  • the shafts 6 presents a profile with a projection compensating the difference in height between their rear portions under the floor and their front portions in the engine compartment.
  • An apron crosspiece 10 is disposed between the two stretchers and the deck 8.
  • Figure 2 illustrates, at its upper part, the schematic profile of one of the stretchers of Figure 1, along the floor 12 and the deck 8 of the vehicle.
  • the schematic section of the deck cross-member 10 can be observed there. It can also be observed that the section of the stretcher 6 has a significant variation of shape at the level of the deck cross member 10. This variation of section makes it possible to carry out a support via the apron crossmember 10, useful in case of impact at the front of the vehicle. This variation also forms a discontinuity in the resistance to bending of the beam that forms the stretcher.
  • Figure 2 illustrates, at its lower part, the schematic profile of a stretcher according to the invention.
  • This stretcher 106 has a substantially constant section, or at least a section with an inertia module essentially constant along its front portions 106 1 , intermediate 106 2 , and rear 106 3 . It can be seen that the stretcher 106 comprises a connecting piece 114 to the apron 108 and the floor 112, this part being an integral part of the structure of the stretcher.
  • the stretcher 106 is applicable to a front structure 102 of a vehicle as illustrated in FIG. 1, more particularly to the passenger compartment 104 and its front apron 108.
  • the stretcher according to the invention is illustrated in detail in FIGS. 3 to 6.
  • FIGs 3 and 4 are perspective views of the stretcher 106, more particularly of its intermediate portion 106 2 and the connecting piece 114.
  • this connecting piece 114 essentially forms a sole cooperating with a beam 116 whose section is substantially U-shaped.
  • the sole of the connecting piece 114 is formed in a cavity or depression of said piece, the latter forms at its sides flanges 114 2 of connection with the beam 116.
  • These wings 114 2 are also wings of contact and connection with the floor and the deck of the vehicle.
  • the connecting piece 114 also forms a front wing 114 3 of contact and connection with the deck.
  • FIG. 5 illustrates in detail the construction of the stretcher 106. More specifically, the left view schematically represents the section of the front portion 106 1 of the stretcher 106. The view of the middle represents the intermediate portion 106 2 and the view of right represents the rear portion 106 3 . A reference y and z is shown in Figure 5. The y-axis corresponds to the horizontal transverse direction of the vehicle while the z-axis corresponds to the vertical transverse direction. As a result, the x-axis corresponds to the longitudinal direction of the vehicle, the shafts 106 extending substantially in this direction.
  • the front portion 106 1 of the stretcher 106 consists essentially of a beam 118 of substantially C-section and a sole 120.
  • the latter is fixed to the beam 118 so to close the cavity 118 1 formed by its open section in the form of C.
  • the beam 118 may have wings 118 2 on either side of the opening of the cavity 118 1 . These wings 118 2 are in contact, and fixed, with the sole 120. The latter extends substantially vertically.
  • FIG. 5 illustrates the intermediate portion 106 2 of the stretcher 106. It consists essentially of the beam 116 (already mentioned in connection with FIG. 3) of U-shaped section and of the connecting piece 114 forming a sole. The latter covers the opening of the cavity 116 1 formed by the beam 116. Similarly to the beam 118 of the front portion 106 1 , the beam may have flanges 116 2 on either side of the opening of the cavity 116 1 , these wings being in contact, and fixed, with the sole 114. As already mentioned in connection with Figures 3 and 4, the sole 114 has a depression form for raising its wings 114 2 for their contact with the apron and / or the floor of the vehicle.
  • the beam 118 of the front portion 106 1 extends into the cavity 116 1 of the beam 116 of the intermediate portion 106 2 . More particularly, the portion of the beam 118 which extends in the intermediate portion 106 2 of the stretcher 106 is no longer of two wings 118 to conform to the substantially rectangular section of said intermediate portion 106 2. More specifically, the upper wall of the beam portion 118 is in contact with the flange 114 and the side and bottom walls of said beam portion are in contact with the corresponding walls of the beam 116. These walls are preferably fixed to each other. others, particularly by electric resistance spot welding.
  • the front sole plate 1 106 may also extend at least partially along the intermediate portion 106 2.
  • the sole 120 extends on the corresponding outer face of the beam 116.
  • these walls are preferably fixed to each other including by means of electric spot welding.
  • the overlap between the front portions 106 1 and intermediate 106 2 by means of the beam 118 and / or the sole 120 of the front portion makes it possible to ensure a rigid and continuous connection between these two portions while forming a connecting piece 114 floor and apron.
  • the covering may extend over more than 50 mm, preferably over more than 80 mm, more preferably over more than 100 mm.
  • the rear portion 106 3 of the stretcher 106 consists essentially of a beam 122 of generally U-shaped section, and a corresponding soleplate 124 enclosing the opening of the cavity 122 1 of said beam 122.
  • the beam may have wings 122 2 on either side of the opening of the cavity 122 1 , these wings being in contact, and fixed, with the sole 124.
  • the beam 1 16 of the intermediate portion 106 2 extends into the cavity 122 1 of the beam 122 of the rear portion 106 3 . More specifically, the walls of the beam portion 1 16 are in contact with the corresponding walls of the beam 122. These walls are preferably fixed to each other in particular by means of electric spot welding.
  • the sole 114 of the intermediate portion 106 2 can also extend at least partially along the rear portion 106 3 . More particularly, the portion of the sole 1 14 which extends in the rear portion of the stretcher 106 3 106 no longer wings 14 January 2 in order to comply with the substantially rectangular section of said rear portion 106 3. In this case, the sole 114 extends on the underside of the sole 124. Similarly, these walls are preferably fixed to each other including by means of electric spot welding.
  • the overlap between the intermediate portions 106 2 and rear 106 3 by means of the beam 116 and / or the sole 114 of the intermediate portion makes it possible to ensure a rigid and continuous connection between these two portions.
  • the covering may extend over more than 50 mm, preferably over more than 80 mm, more preferably over more than 100 mm.
  • the X and H dimensions of the sections are represented therein. More specifically, the X dimensions a and H correspond to the portion of front portion 106 1, and the dimensions X b and H b correspond to the section of the intermediate portion 106 2, X dimensions c and H c correspond to the section of the rear portion 106 3 .
  • These dimensions define the moment of inertia of the beam, that is to say its rigidity and its resistance to bending. These dimensions may vary only in limited tolerance along front, middle and rear portions of the stretcher. This tolerance may be 20%, preferably 10% or more preferably 5%.
  • Figure 6 is a side view of the stretcher 106, illustrating the beam 116 and the sole 114 of the intermediate portion 106 2 .
  • the stretcher according to the invention can thus have a section with a moment of inertia substantially constant, at least within a tolerance of 20%, preferably 10% or more preferably 5%, along the front, intermediate and rear portions. It thus has an improved ability to absorb shocks before and, more generally, to transmit mechanical forces. Its connection to the floor and deck is provided by the connecting piece forming an integral part of the intermediate portion of the stretcher.

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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

The invention relates to a longitudinal beam of a vehicle, referred to as side rail (106), including a front portion (1061) intended to extend into the engine compartment of the vehicle, a rear portion (1063) intended to extend under the floor (112) of the vehicle, and an intermediate portion (1062) between the front (1061) and rear portions (1063), intended for being arranged at the front apron (108) of the passenger compartment of the vehicle. The intermediate portion (1062) has a closed perimeter over most of the length thereof and extends overlapping the front (1061) and/or rear portions (1063) with a view to being assembled with said one or more portions. The invention also relates to a vehicle structure including at least one such side rail (106).

Description

BRANCARD A MODULE D'INERTIE CONSTANT POUR VEHICULE  CONTINUOUS INERTIA MODULE STRETCH FOR VEHICLE
AUTOMOBILE  AUTOMOBILE
L'invention a trait au domaine des véhicules automobiles, plus particulièrement au domaine des structures de véhicules automobile. Plus particulièrement encore, l'invention a trait aux deux poutres longitudinales s'étendant parallèlement l'une à l'autre le long du véhicule, ces poutres étant communément appelées brancards. The invention relates to the field of motor vehicles, more particularly to the field of motor vehicle structures. More particularly, the invention relates to two longitudinal beams extending parallel to each other along the vehicle, said beams being commonly called stretchers.
Les brancards de véhicule présentent couramment un profil avec un ressaut au niveau du tablier avant de l'habitacle. En effet, les brancards s'étendent sous le plancher de l'habitacle vers l'avant du véhicule en décrivant un ressaut à l'avant du plancher, plus précisément au niveau du tablier avant de l'habitacle, pour ensuite s'étendre vers l'avant dans le compartiment moteur. Une traverse de tablier est couramment prévue entre le tablier et les brancards afin d'assurer un appui satisfaisant. En raison de cette construction, la section du brancard n'est habituellement par constante, en particulier au niveau du ressaut. Or cette zone peut-être sujette à des efforts importants notamment en cas d'impact à l'avant du véhicule. Vehicle stretchers commonly have a profile with a protrusion at the front apron of the passenger compartment. Indeed, the stretchers extend under the floor of the passenger compartment towards the front of the vehicle by describing a projection at the front of the floor, more precisely at the front apron of the passenger compartment, and then expand towards the front in the engine compartment. An apron cross is commonly provided between the apron and the stretchers to ensure a satisfactory support. Because of this construction, the section of the stretcher is usually not constant, especially at the level of the projection. But this area may be subject to significant efforts, especially in case of impact to the front of the vehicle.
Le document de brevet publié FR 2 934 840 B1 divulgue un système de fixation de brancards sur une structure de véhicule automobile, ce système comprenant essentiellement une pièce d'interface entre chaque brancard et la traverse de tablier de l'habitacle du véhicule. La pièce d'interface comprend des pattes de positionnement et de fixation qui s'étendent essentiellement longitudinalement. Elles sont destinées à coopérer par engagement à l'intérieur de la section de la portion avant des brancards. Cela signifie que ces pièces d'interface imposent aux brancards de présenter, à l'arrière de leurs portions avant, une section ouverte. Ce système de fixation impose par conséquent une discontinuité importante de la section du brancard au niveau du ressaut, entre la portion avant dans le compartiment moteur et la portion arrière sous le plancher. L'enseignement de ce document ne permet par conséquent pas d'améliorer la raideur intrinsèque et la résistance à la déformation des brancards, plus particulièrement au niveau du ressaut le long du tablier avant de l'habitacle. The published patent document FR 2 934 840 B1 discloses a system for attaching stretchers to a motor vehicle structure, this system essentially comprising an interface piece between each stretcher and the deck rail of the passenger compartment of the vehicle. The interface piece includes locating and securing tabs that extend substantially longitudinally. They are intended to cooperate by engagement inside the section of the front portion of the stretchers. This means that these interface parts require the stretchers to present, at the rear of their front portions, an open section. This fastening system therefore imposes a significant discontinuity of the section of the stretcher at the projection between the front portion in the engine compartment and the rear portion under the floor. The teaching of this document therefore does not improve the intrinsic stiffness and resistance to deformation stretchers, especially at the jump along the front deck of the passenger compartment.
L'invention a pour objectif de proposer un design de brancard, notamment au niveau de sa fixation au tablier, qui pallie au moins un des inconvénients susmentionnés. Plus particulièrement, l'invention a pour objectif un design de brancard qui soit plus rigide et permette de mieux diffuser les contraintes mécaniques comme celles d'un choc avant du véhicule. The object of the invention is to propose a stretcher design, in particular at its attachment to the apron, which overcomes at least one of the aforementioned drawbacks. More particularly, the invention aims to design stretcher which is more rigid and better to diffuse the mechanical stresses such as those of a front shock of the vehicle.
L'invention a pour objet une poutre longitudinale de véhicule, comprenant : une portion avant destinée à s'étendre dans le compartiment moteur du véhicule ; une portion arrière destinée à s'étendre sous le plancher du véhicule ; et une portion intermédiaire entre les portions avant et arrière et destinée à être disposée au niveau du tablier avant de l'habitacle du véhicule ; remarquable en ce que la portion intermédiaire présente sur la majorité de sa longueur un périmètre fermé et s'étend avec recouvrement le long de la portion avant et/ou de la portion arrière en vue de son assemblage avec ladite/lesdites portion(s). The invention relates to a longitudinal vehicle beam, comprising: a front portion intended to extend into the engine compartment of the vehicle; a rear portion intended to extend under the floor of the vehicle; and an intermediate portion between the front and rear portions and intended to be disposed at the front apron of the passenger compartment of the vehicle; remarkable in that the intermediate portion has on a majority of its length a closed perimeter and extends overlap along the front portion and / or the rear portion for assembly with said portion (s).
Le recouvrement peut s'étendre sur plus de 50mm, préférentiellement sur plus de 80mm, plus préférentiellement sur plus de 100mm. The covering may extend over more than 50 mm, preferably over more than 80 mm, more preferably over more than 100 mm.
Les portions avant, intermédiaire et/ou arrière sont préférentiellement liées entre elles par soudure, plus préférentiellement par soudure par résistance électrique. The front, intermediate and / or rear portions are preferably bonded together by welding, more preferably by electrical resistance welding.
Selon un mode avantageux de l'invention, chacune des portions avant, intermédiaire et arrière comprend un profilé dont la section forme une cavité ouverte, et une semelle refermant ladite cavité. According to an advantageous embodiment of the invention, each of the front, intermediate and rear portions comprises a section whose section forms an open cavity, and a soleplate closing said cavity.
Selon un mode avantageux de l'invention, au moins un, préférentiellement chacun, des profilés comprend deux ailes au niveau de l'ouverture de la cavité, lesdites ailes contactant la semelle correspondante. According to an advantageous embodiment of the invention, at least one, preferably each, of the profiles comprises two wings at the opening of the cavity, said wings contacting the corresponding sole.
Selon un mode avantageux de l'invention, le profilé de la portion avant s'étend au moins partiellement dans la cavité du profilé de la portion intermédiaire et/ou le profilé de la portion intermédiaire s'étend au moins partiellement dans la cavité du profilé de la portion arrière. According to an advantageous embodiment of the invention, the profile of the front portion extends at least partially in the cavity of the profile of the intermediate portion and / or the profile of the intermediate portion extends at least partially in the cavity of the profile. of the rear portion.
Selon un mode avantageux de l'invention, la semelle de la portion avant s'étend au moins partiellement le long du profilé de la portion intermédiaire et/ou la semelle de la portion intermédiaire s'étend au moins partiellement le long du profilé de la portion arrière. Selon un mode avantageux de l'invention, le profilé de la portion avant présente une section en C, le profilé de la portion intermédiaire une section en U et/ou le profilé de la portion arrière une section en U. According to an advantageous embodiment of the invention, the sole of the front portion extends at least partially along the profile of the intermediate portion and / or the sole of the intermediate portion extends at least partially along the profile of the rear portion. According to an advantageous embodiment of the invention, the profile of the front portion has a section C, the profile of the intermediate portion a U-section and / or the profile of the rear portion a U-shaped section.
Selon un mode avantageux de l'invention, la semelle de la portion intermédiaire contacte essentiellement horizontalement la face supérieure du profilé de la portion avant et comprend deux ailes latérales et surélevées, lesdites ailes contactant le profilé de la portion intermédiaire et le plancher et/ou le tablier avant du véhicule. According to an advantageous embodiment of the invention, the sole of the intermediate portion substantially horizontally contacts the upper face of the profile of the front portion and comprises two lateral and raised wings, said wings contacting the profile of the intermediate portion and the floor and / or the front apron of the vehicle.
Selon un mode avantageux de l'invention, la semelle de la portion intermédiaire comprend une aile avant destinée à contacter le tablier avant. Selon un mode avantageux de l'invention, la section des portions avant, intermédiaire et arrière est généralement rectangulaire dont la largeur moyenne et la hauteur moyenne ne varient pas de plus de 20% sur l'étendue desdites portions. According to an advantageous embodiment of the invention, the sole of the intermediate portion comprises a front wing intended to contact the front apron. According to an advantageous embodiment of the invention, the section of the front, intermediate and rear portions is generally rectangular whose average width and average height do not vary by more than 20% over the extent of said portions.
Avantageusement le produit de la largeur moyenne par la hauteur moyenne de la section des portions avant, intermédiaire et arrière ne varie pas de plus de 20%, préférentiellement 10%, sur l'étendue desdites portions. Avantageusement, il en va de même pour le module d'inertie selon un axe transversal. Advantageously, the product of the average width by the average height of the section of the front, intermediate and rear portions does not vary by more than 20%, preferably 10%, over the extent of said portions. Advantageously, it is the same for the inertia module along a transverse axis.
L'invention a également pour objet un véhicule automobile avec un habitacle et comprenant deux poutres longitudinales s'étendant parallèlement l'une à l'autre sous le plancher de l'habitacle et à l'avant dudit habitacle ; remarquable en ce que les poutres sont conformes à l'invention. The invention also relates to a motor vehicle with a passenger compartment and comprising two longitudinal beams extending parallel to each other under the floor of the passenger compartment and in front of said passenger compartment; remarkable in that the beams are in accordance with the invention.
La portion arrière s'étend majoritairement, préférentiellement spécifiquement, sous le plancher, la portion intermédiaire sous le tablier avant et la portion avant dans le compartiment moteur. The rear portion extends mainly, preferably specifically, under the floor, the intermediate portion under the front apron and the front portion in the engine compartment.
Les mesures de l'invention sont intéressantes en ce qu'elles permettent de réaliser une poutre du type brancard de véhicule qui présente une continuité de matière à sa périphérie et le long du profilé, cette continuité conférant à la poutre une résistance accrue notamment en flexion. The measurements of the invention are interesting in that they make it possible to produce a strut of the vehicle strut type which has continuity of material at its periphery and along the profile, this continuity conferring on the beam an increased resistance particularly in flexion. .
D'autres caractéristiques et avantages de la présente invention seront mieux compris à l'aide de la description et des dessins parmi lesquels : - La figure 1 est une vue en perspective de l'avant d'une structure de véhicule, illustrant les deux brancards et le tablier avant ; Other features and advantages of the present invention will be better understood from the description and the drawings, among which: - Figure 1 is a perspective view of the front of a vehicle structure, illustrating the two shafts and the front apron;
- La figure 2 est une vue schématique de profil d'un brancard selon l'art antérieur et d'un brancard selon l'invention ;  - Figure 2 is a schematic side view of a stretcher according to the prior art and a stretcher according to the invention;
- La figure 3 est une vue en perspective de la portion intermédiaire du brancard et de sa pièce de liaison au plancher et au tablier du véhicule ;  - Figure 3 is a perspective view of the intermediate portion of the stretcher and its connection piece to the floor and deck of the vehicle;
- La figure 4 est une autre vue en perspective de la portion intermédiaire du brancard et de sa pièce de liaison au plancher et au tablier du véhicule ;  - Figure 4 is another perspective view of the intermediate portion of the stretcher and its connection piece to the floor and the apron of the vehicle;
- La figure 5 est une représentation schématique en coupe du brancard selon l'invention, au niveau de sa portion avant, de sa portion intermédiaire et au niveau de sa portion arrière ;  - Figure 5 is a schematic sectional representation of the stretcher according to the invention, at its front portion, its intermediate portion and at its rear portion;
- La figure 6 est une vue de profil du brancard selon l'invention.  - Figure 6 is a side view of the stretcher according to the invention.
La figure 1 illustre l'avant de la structure 2 d'un véhicule conforme à l'état de la technique. On peut y observer une partie de l'habitacle 4 du véhicule et deux poutres 6 s'étendant longitudinalement parallèlement l'une à l'autre sous et devant l'habitacle 4, ces poutres étant couramment appelées brancards. Ces brancards 6 s'étendent sous le plancher de l'habitacle et le long du tablier avant 8 dudit habitacle. A cet effet, les brancards 6 présent un profil avec un ressaut compensant la différence de hauteur entre leurs portions arrière sous le plancher et leurs portions avant dans le compartiment moteur. Une traverse de tablier 10 est disposée entre les deux brancards et le tablier 8. Figure 1 illustrates the front of the structure 2 of a vehicle according to the state of the art. There can be seen part of the passenger compartment 4 of the vehicle and two beams 6 extending longitudinally parallel to one another under and in front of the passenger compartment 4, these beams being commonly called stretchers. These stretchers 6 extend below the floor of the passenger compartment and along the front apron 8 of said passenger compartment. For this purpose, the shafts 6 presents a profile with a projection compensating the difference in height between their rear portions under the floor and their front portions in the engine compartment. An apron crosspiece 10 is disposed between the two stretchers and the deck 8.
La figure 2 illustre, à sa partie supérieure, le profil schématique d'un des brancards de la figure 1 , le long du plancher 12 et du tablier 8 du véhicule. On peut y observer la section schématique de la traverse de tablier 10. On peut également y observer que la section du brancard 6 présente une variation de forme importante au niveau de la traverse de tablier 10. Cette variation de section permet de réaliser un appui via la traverse de tablier 10, utile en cas de choc à l'avant du véhicule. Cette variation forme également une discontinuité dans la résistante à la flexion de la poutre que forme le brancard. La figure 2 illustre, à sa partie inférieure, le profil schématique d'un brancard conforme à l'invention. Ce brancard 106 présente une section essentiellement constante, ou du moins une section avec un module d'inertie essentiellement constant le long de ses portions avant 1061, intermédiaire 1062, et arrière 1063. On peut observer que le brancard 106 comprend une pièce de liaison 114 au tablier 108 et au plancher 112, cette pièce faisant partie intégrante de la structure du brancard. Figure 2 illustrates, at its upper part, the schematic profile of one of the stretchers of Figure 1, along the floor 12 and the deck 8 of the vehicle. The schematic section of the deck cross-member 10 can be observed there. It can also be observed that the section of the stretcher 6 has a significant variation of shape at the level of the deck cross member 10. This variation of section makes it possible to carry out a support via the apron crossmember 10, useful in case of impact at the front of the vehicle. This variation also forms a discontinuity in the resistance to bending of the beam that forms the stretcher. Figure 2 illustrates, at its lower part, the schematic profile of a stretcher according to the invention. This stretcher 106 has a substantially constant section, or at least a section with an inertia module essentially constant along its front portions 106 1 , intermediate 106 2 , and rear 106 3 . It can be seen that the stretcher 106 comprises a connecting piece 114 to the apron 108 and the floor 112, this part being an integral part of the structure of the stretcher.
Le brancard 106 selon l'invention est applicable à une structure avant 102 de véhicule telle qu'illustrée à la figure 1 , plus particulièrement à l'habitacle 104 et son tablier avant 108. The stretcher 106 according to the invention is applicable to a front structure 102 of a vehicle as illustrated in FIG. 1, more particularly to the passenger compartment 104 and its front apron 108.
Le brancard selon l'invention est illustré de manière détaillée aux figures 3 à 6. The stretcher according to the invention is illustrated in detail in FIGS. 3 to 6.
Les figures 3 et 4 sont des vues en perspective du brancard 106, plus particulièrement de sa portion intermédiaire 1062 et de la pièce de liaison 114. A la figure 3 on peut observer que cette pièce de liaison 114 forme essentiellement une semelle coopérant avec une poutre 116 dont la section est essentiellement en forme de U. La semelle de la pièce de liaison 114 est formée dans une cavité ou dépression de ladite pièce, cette dernière forme à ses côtés des ailes 1142 de liaison avec la poutre 116. Ces ailes 1142 sont également des ailes de contact et de liaison avec le plancher et le tablier du véhicule. La pièce de liaison 114 forme également une aile avant 1143 de contact et liaison avec le tablier. Figures 3 and 4 are perspective views of the stretcher 106, more particularly of its intermediate portion 106 2 and the connecting piece 114. In Figure 3 it can be seen that this connecting piece 114 essentially forms a sole cooperating with a beam 116 whose section is substantially U-shaped. The sole of the connecting piece 114 is formed in a cavity or depression of said piece, the latter forms at its sides flanges 114 2 of connection with the beam 116. These wings 114 2 are also wings of contact and connection with the floor and the deck of the vehicle. The connecting piece 114 also forms a front wing 114 3 of contact and connection with the deck.
La figure 5 illustre de manière détaillée la construction du brancard 106. Plus précisément, la vue de gauche représente de manière schématique la section de la portion avant 1061 du brancard 106. La vue du milieu représente la portion intermédiaire 1062 et la vue de droite représente la portion arrière 1063. Un repère y et z est représenté à la figure 5. L'axe des y correspond à la direction transversale horizontale du véhicule alors que l'axe des z correspond à la direction transversale verticale. Par voie de conséquence, l'axe des x correspond à la direction longitudinale du véhicule, les brancards 106 s'étendant essentiellement selon cette direction. FIG. 5 illustrates in detail the construction of the stretcher 106. More specifically, the left view schematically represents the section of the front portion 106 1 of the stretcher 106. The view of the middle represents the intermediate portion 106 2 and the view of right represents the rear portion 106 3 . A reference y and z is shown in Figure 5. The y-axis corresponds to the horizontal transverse direction of the vehicle while the z-axis corresponds to the vertical transverse direction. As a result, the x-axis corresponds to the longitudinal direction of the vehicle, the shafts 106 extending substantially in this direction.
A la vue de gauche, on peut observer que la portion avant 1061 du brancard 106 est constituée, essentiellement, d'une poutre 118 de section essentiellement en C et d'une semelle 120. Cette dernière est fixée à la poutre 118 de manière à refermer la cavité 1181 formée par sa section ouverte en forme de C. A cet effet, la poutre 118 peut présenter des ailes 1182 de part et d'autre de l'ouverture de la cavité 1181. Ces ailes 1182 sont en contact, et fixées, avec la semelle 120. Cette dernière s'étend essentiellement verticalement. In the left view, it can be seen that the front portion 106 1 of the stretcher 106 consists essentially of a beam 118 of substantially C-section and a sole 120. The latter is fixed to the beam 118 so to close the cavity 118 1 formed by its open section in the form of C. For this purpose, the beam 118 may have wings 118 2 on either side of the opening of the cavity 118 1 . These wings 118 2 are in contact, and fixed, with the sole 120. The latter extends substantially vertically.
La vue du milieu de la figure 5 illustre la portion intermédiaire 1062 du brancard 106. Elle est constituée, essentiellement de la poutre 116 (déjà mentionnée en relation avec la figure 3) de section en forme de U et de la pièce de liaison 114 formant une semelle. Cette dernière recouvre l'ouverture de la cavité 1161 formée par la poutre 116. Similairement à la poutre 118 de la portion avant 1061, la poutre peut présenter des ailes 1162 de part et d'autre de l'ouverture de la cavité 1161, ces ailes étant en contact, et fixées, avec la semelle 114. Comme déjà mentionné en relation avec les figures 3 et 4, la semelle 114 présente une forme en dépression permettant de relever ses ailes 1142 en vue de leur contact avec le tablier et/ou le plancher du véhicule. The middle view of FIG. 5 illustrates the intermediate portion 106 2 of the stretcher 106. It consists essentially of the beam 116 (already mentioned in connection with FIG. 3) of U-shaped section and of the connecting piece 114 forming a sole. The latter covers the opening of the cavity 116 1 formed by the beam 116. Similarly to the beam 118 of the front portion 106 1 , the beam may have flanges 116 2 on either side of the opening of the cavity 116 1 , these wings being in contact, and fixed, with the sole 114. As already mentioned in connection with Figures 3 and 4, the sole 114 has a depression form for raising its wings 114 2 for their contact with the apron and / or the floor of the vehicle.
Toujours à la vue du milieu, il est intéressant de noter que la poutre 118 de la portion avant 1061 s'étend dans la cavité 1161 de la poutre 116 de la portion intermédiaire 1062. Plus particulièrement, la portion de la poutre 118 qui s'étend dans la portion intermédiaire 1062 du brancard 106 ne présente plus d'ailes 1182 afin de se conformer à la section essentiellement rectangulaire de ladite portion intermédiaire 1062. Plus précisément, la paroi supérieure de la portion de poutre 118 est en contact avec la semelle 114 et les parois latérale et inférieure de ladite portion de poutre sont en contact avec les parois correspondantes de la poutre 116. Ces parois sont préférentiellement fixées les unes aux autres notamment au moyen de soudures par résistance électrique par point. Always in view of the medium, it is interesting to note that the beam 118 of the front portion 106 1 extends into the cavity 116 1 of the beam 116 of the intermediate portion 106 2 . More particularly, the portion of the beam 118 which extends in the intermediate portion 106 2 of the stretcher 106 is no longer of two wings 118 to conform to the substantially rectangular section of said intermediate portion 106 2. More specifically, the upper wall of the beam portion 118 is in contact with the flange 114 and the side and bottom walls of said beam portion are in contact with the corresponding walls of the beam 116. These walls are preferably fixed to each other. others, particularly by electric resistance spot welding.
Toujours à la vue du milieu, on peut observer que la semelle 120 de la portion avant 1061 peut également s'étendre au moins partiellement le long de la portion intermédiaire 1062. En l'occurrence, la semelle 120 s'étend sur la face extérieure correspondante de la poutre 116. Similairement, ces parois sont préférentiellement fixées les unes aux autres notamment au moyen de soudures électriques par point. Also at the satellite medium, 120 of the portion can be observed that the front sole plate 1 106 may also extend at least partially along the intermediate portion 106 2. In this case, the sole 120 extends on the corresponding outer face of the beam 116. Similarly, these walls are preferably fixed to each other including by means of electric spot welding.
Le recouvrement entre les portions avant 1061 et intermédiaire 1062 au moyen de la poutre 118 et/ou de la semelle 120 de la portion avant permet d'assurer une liaison rigide et continue entre ces deux portions tout en formant une pièce de liaison 114 au plancher et au tablier. Le recouvrement peut s'étendre sur plus de 50mm, préférentiellement sur plus de 80mm, plus préférentiellement sur plus de 100mm. A la vue de droite de la figure 5, on peut observer que la portion arrière 1063 du brancard 106 est constituée, essentiellement, d'une poutre 122 de section généralement en U, et d'une semelle correspondante 124 refermant l'ouverture de la cavité 1221 de ladite poutre 122. Similairement aux poutres 1 18 et 1 16 des portions avant 1061 et intermédiaire 1062, la poutre peut présenter des ailes 1222 de part et d'autre de l'ouverture de la cavité 1221, ces ailes étant en contact, et fixées, avec la semelle 124. The overlap between the front portions 106 1 and intermediate 106 2 by means of the beam 118 and / or the sole 120 of the front portion makes it possible to ensure a rigid and continuous connection between these two portions while forming a connecting piece 114 floor and apron. The covering may extend over more than 50 mm, preferably over more than 80 mm, more preferably over more than 100 mm. In the right view of FIG. 5, it can be seen that the rear portion 106 3 of the stretcher 106 consists essentially of a beam 122 of generally U-shaped section, and a corresponding soleplate 124 enclosing the opening of the cavity 122 1 of said beam 122. Similarly to the beams 1 18 and 1 16 of the front portions 106 1 and intermediate 106 2 , the beam may have wings 122 2 on either side of the opening of the cavity 122 1 , these wings being in contact, and fixed, with the sole 124.
Toujours à la vue de droite, il est intéressant de noter que la poutre 1 16 de la portion intermédiaire 1062 s'étend dans la cavité 1221 de la poutre 122 de la portion arrière 1063. Plus précisément, les parois de la portion de poutre 1 16 sont en contact avec les parois correspondantes de la poutre 122. Ces parois sont préférentiellement fixées les unes aux autres notamment au moyen de soudures électriques par point. Still in the right view, it is interesting to note that the beam 1 16 of the intermediate portion 106 2 extends into the cavity 122 1 of the beam 122 of the rear portion 106 3 . More specifically, the walls of the beam portion 1 16 are in contact with the corresponding walls of the beam 122. These walls are preferably fixed to each other in particular by means of electric spot welding.
Toujours à la vue de droite, on peut observer que la semelle 114 de la portion intermédiaire 1062 peut également s'étendre au moins partiellement le long de la portion arrière 1063. Plus particulièrement, la portion de la semelle 1 14 qui s'étend dans la portion arrière 1063 du brancard 106 ne présente plus d'ailes 1 142 afin de se conformer à la section essentiellement rectangulaire de ladite portion arrière 1063. En l'occurrence, la semelle 114 s'étend sur la face inférieure de la semelle 124. Similairement, ces parois sont préférentiellement fixées les unes aux autres notamment au moyen de soudures électriques par point. Still in the right view, it can be seen that the sole 114 of the intermediate portion 106 2 can also extend at least partially along the rear portion 106 3 . More particularly, the portion of the sole 1 14 which extends in the rear portion of the stretcher 106 3 106 no longer wings 14 January 2 in order to comply with the substantially rectangular section of said rear portion 106 3. In this case, the sole 114 extends on the underside of the sole 124. Similarly, these walls are preferably fixed to each other including by means of electric spot welding.
Le recouvrement entre les portions intermédiaire 1062 et arrière 1063 au moyen de la poutre 116 et/ou de la semelle 114 de la portion intermédiaire permet d'assurer une liaison rigide et continue entre ces deux portions. Le recouvrement peut s'étendre sur plus de 50mm, préférentiellement sur plus de 80mm, plus préférentiellement sur plus de 100mm. The overlap between the intermediate portions 106 2 and rear 106 3 by means of the beam 116 and / or the sole 114 of the intermediate portion makes it possible to ensure a rigid and continuous connection between these two portions. The covering may extend over more than 50 mm, preferably over more than 80 mm, more preferably over more than 100 mm.
Aux différentes vues de la figure 5, on peut également observer que les dimensions X et H des sections y sont représentées. Plus précisément, les dimensions Xa et Ha correspondent à la section de la portion avant 1061, les dimensions Xb et Hb correspondent à la section de la portion intermédiaire 1062, les dimensions Xc et Hc correspondent à la section de la portion arrière 1063. Ces dimensions définissent le moment d'inertie de la poutre, c'est-à-dire sa rigidité et sa résistance à la flexion. Ces dimensions peuvent ne varier que dans une tolérance limitée le long des portions avant, intermédiaire et arrière du brancard. Cette tolérance peut être de 20%, préférentiellement 10% ou plus préférentiellement 5%. In the different views of FIG. 5, it can also be observed that the X and H dimensions of the sections are represented therein. More specifically, the X dimensions a and H correspond to the portion of front portion 106 1, and the dimensions X b and H b correspond to the section of the intermediate portion 106 2, X dimensions c and H c correspond to the section of the rear portion 106 3 . These dimensions define the moment of inertia of the beam, that is to say its rigidity and its resistance to bending. These dimensions may vary only in limited tolerance along front, middle and rear portions of the stretcher. This tolerance may be 20%, preferably 10% or more preferably 5%.
Il est intéressant de noter que la section des différentes portions reste essentiellement fermée, ce qui permet d'assurer une continuité de rigidité et de résistance à la déformation notamment en flexion. It is interesting to note that the section of the different portions remains essentially closed, which makes it possible to ensure a continuity of rigidity and of resistance to deformation, in particular in bending.
La figure 6 est une vue de profil du brancard 106, illustrant la poutre 116 et la semelle 114 de la portion intermédiaire 1062. On peut observer les ailes latérales 1142 et l'aile avant 1143 destinées à contacter le plancher et/ou le tablier, et à y être fixées. Le brancard selon l'invention peut ainsi présenter une section avec un moment d'inertie essentiellement constant, du moins dans une tolérance de 20%, préférentiellement de 10% ou plus préférentiellement de 5%, le long des portions avant, intermédiaire et arrière. Il présente ainsi une capacité améliorée à absorber les chocs avant et, de manière plus générale, à transmettre des efforts mécaniques. Sa liaison au plancher et au tablier est assurée par la pièce de liaison faisant partie intégrante de la portion intermédiaire du brancard. Figure 6 is a side view of the stretcher 106, illustrating the beam 116 and the sole 114 of the intermediate portion 106 2 . We can see the side wings 114 2 and the front wing 114 3 intended to contact the floor and / or the deck, and to be fixed. The stretcher according to the invention can thus have a section with a moment of inertia substantially constant, at least within a tolerance of 20%, preferably 10% or more preferably 5%, along the front, intermediate and rear portions. It thus has an improved ability to absorb shocks before and, more generally, to transmit mechanical forces. Its connection to the floor and deck is provided by the connecting piece forming an integral part of the intermediate portion of the stretcher.

Claims

REVENDICATIONS
1. Poutre longitudinale (106) de véhicule (102), comprenant : A longitudinal beam (106) of a vehicle (102), comprising:
- une portion avant (1061) destinée à s'étendre dans le compartiment moteur du véhicule ; a front portion (106 1 ) intended to extend into the engine compartment of the vehicle;
- une portion arrière (1063) destinée à s'étendre sous le plancher (1 12) du véhicule ; et - A rear portion (106 3 ) intended to extend under the floor (1 12) of the vehicle; and
- une portion intermédiaire (1062) entre les portions avant (1061) et arrière (1063) et destinée à être disposée au niveau du tablier avant (108) de l'habitacle du véhicule ; - An intermediate portion (106 2 ) between the front portions (106 1 ) and rear (106 3 ) and intended to be disposed at the front apron (108) of the passenger compartment of the vehicle;
caractérisée en ce que  characterized in that
la portion intermédiaire (1062) présente sur la majorité de sa longueur un périmètre fermé et s'étend avec recouvrement le long de la portion avant (1061) et/ou de la portion arrière (1063) en vue de son assemblage avec ladite/lesdites portion(s). the intermediate portion (106 2 ) has, for the majority of its length, a closed perimeter and extends overlap along the front portion (106 1 ) and / or the rear portion (106 3 ) for assembly with said portion (s).
2. Poutre (106) selon la revendication 1 , caractérisée en ce que chacune des portions avant (1061), intermédiaire (1062) et arrière (1063) comprend un profilé (118, 1 16, 122) dont la section forme une cavité ouverte (1181 , 1 161, 1221), et une semelle (120, 114, 124) refermant ladite cavité. 2. Beam (106) according to claim 1, characterized in that each of the front portions (106 1 ), intermediate (106 2 ) and rear (106 3 ) comprises a profile (118, 1 16, 122) whose section form an open cavity (118 1 , 1 16 1 , 122 1 ), and a sole (120, 114, 124) closing said cavity.
3. Poutre (106) selon la revendication 2, caractérisée en ce qu'au moins un, préférentiellement chacun, des profilés (1 18, 1 16, 122) comprend deux ailes3. Beam (106) according to claim 2, characterized in that at least one, preferably each, of the profiles (1 18, 1 16, 122) comprises two wings
(1182, 1 162, 1222) au niveau de l'ouverture de la cavité (1 181, 1 161, 1221), lesdites ailes (1 182, 1162, 1222) contactant la semelle correspondante (120, 1 14, 124). (118 2 , 1 16 2 , 122 2 ) at the opening of the cavity (1 18 1 , 1 16 1 , 122 1 ), said wings (1 18 2 , 116 2 , 122 2 ) contacting the corresponding soleplate (120, 114, 124).
4. Poutre (106) selon l'une des revendications 2 et 3, caractérisée en ce que le profilé (118) de la portion avant (1061) s'étend au moins partiellement dans la cavité (1162) du profilé (116) de la portion intermédiaire (1062) et/ou le profilé (116) de la portion intermédiaire (1062) s'étend a moins partiellement dans la cavité (1221) du profilé (122) de la portion arrière (1063). 4. Beam (106) according to one of claims 2 and 3, characterized in that the profile (118) of the front portion (106 1 ) extends at least partially in the cavity (116 2 ) of the profile (116). ) of the intermediate portion (106 2 ) and / or the profile (116) of the intermediate portion (106 2 ) extends at least partially in the cavity (122 1 ) of the profile (122) of the rear portion (106 3 ).
5. Poutre (106) selon l'une des revendications 2 à 4, caractérisée en ce que la semelle (120) de la portion avant (1061) s'étend au moins partiellement le long du profilé (116) de la portion intermédiaire (1062) et/ou la semelle (1 14) de la portion intermédiaire (106 ) s'étend au moins partiellement le long du profilé (122) de la portion arrière (1063). 5. Beam (106) according to one of claims 2 to 4, characterized in that the sole (120) of the front portion (106 1 ) extends at least partially along the section (116) of the intermediate portion (106 2 ) and / or the sole (1 14) of the intermediate portion (106) extends at least partially along the profile (122) of the rear portion (106 3 ).
6. Poutre (106) selon l'une des revendications 2 à 5, caractérisée en ce que le profilé (118) de la portion avant (1061) présente une section en C, le profilé (116) de la portion intermédiaire (1062) une section en U et/ou le profilé (122) de la portion arrière (1063) une section en U. 6. Beam (106) according to one of claims 2 to 5, characterized in that the profile (118) of the front portion (106 1 ) has a section C, the profile (116) of the intermediate portion (106). 2 ) a U-section and / or the profile (122) of the rear portion (106 3 ) a U-section.
7. Poutre (106) selon l'une des revendications 2 à 6, caractérisée en ce que la semelle (1 14) de la portion intermédiaire (106 ) contacte essentiellement horizontalement la face supérieure du profilé (1 18) de la portion avant (1061) et comprend deux ailes latérales et surélevées (1 142), lesdites ailes contactant le profilé (1 16) de la portion intermédiaire (1062) et le plancher (112) et/ou le tablier avant (108) du véhicule. 7. Beam (106) according to one of claims 2 to 6, characterized in that the sole (1 14) of the intermediate portion (106) substantially horizontally contacts the upper face of the profile (1 18) of the front portion ( 106 1 ) and comprises two lateral and raised wings (1 14 2 ), said wings contacting the profile (1 16) of the intermediate portion (106 2 ) and the floor (112) and / or the front apron (108) of the vehicle .
8. Poutre (106) selon la revendication 7, caractérisée en ce que la semelle (1 14) de la portion intermédiaire (1062) comprend une aile avant (1 143) destinée à contacter le tablier avant (108). 8. Beam (106) according to claim 7, characterized in that the sole (1 14) of the intermediate portion (106 2 ) comprises a front wing (1 14 3 ) intended to contact the front apron (108).
9. Poutre (106) selon l'une des revendications 1 à 8, caractérisée en ce que la section des portions avant (1061), intermédiaire (1062) et arrière (1063) est généralement rectangulaire dont la largeur moyenne (Xa, Xt>, Xc) et la hauteur moyenne (Ha, Hb, Hc) ne varient pas de plus de 20% sur l'étendue desdites portions. 9. Beam (106) according to one of claims 1 to 8, characterized in that the section of the front portions (106 1 ), intermediate (106 2 ) and rear (106 3 ) is generally rectangular whose average width (X a , Xt > , X c ) and the average height (H a , H b , H c ) do not vary by more than 20% over the extent of said portions.
10. Véhicule automobile (102) avec un habitacle (104) et comprenant deux poutres longitudinales (106) s'étendant parallèlement l'une à l'autre sous le plancher (112) de l'habitacle et à l'avant dudit habitacle ; caractérisé en ce que les poutres (106) sont conformes à l'une des revendications 1 à 9. 10. A motor vehicle (102) with a passenger compartment (104) and comprising two longitudinal beams (106) extending parallel to each other under the floor (112) of the passenger compartment and in front of said passenger compartment; characterized in that the beams (106) are in accordance with one of claims 1 to 9.
PCT/FR2015/051244 2014-06-19 2015-05-12 Side rail with constant modulus of inertia for motor vehicle WO2015193566A1 (en)

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FR1455657A FR3022516B1 (en) 2014-06-19 2014-06-19 CONSTANT INERTIA MODULE STRETCHER FOR MOTOR VEHICLE
FR1455657 2014-06-19

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WO2015193566A1 true WO2015193566A1 (en) 2015-12-23

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US5882065A (en) * 1994-10-19 1999-03-16 Honda Giken Kogyo Kabushiki Kaisha Front body structure of automobile
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EP1439109A2 (en) * 2003-01-16 2004-07-21 Fuji Jukogyo Kabushiki Kaisha Front structure for vehicle
DE102010006669A1 (en) * 2010-02-03 2011-08-04 Audi Ag, 85057 Profile node for car body, has strengthening element connected with cast node parts, where cross beam made from steel material is attached at cast node parts and runs crosswise relative to longitudinal beam path
GB2496284A (en) * 2011-11-04 2013-05-08 Gm Global Tech Operations Inc Longitudinal frame portion of vehicle chassis
FR2934840B1 (en) 2008-08-08 2013-07-26 Peugeot Citroen Automobiles Sa BRANCHET FIXING SYSTEM ON A MOTOR VEHICLE

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0421277A1 (en) * 1989-09-30 1991-04-10 Mazda Motor Corporation Front body structure of automotive vehicle
US5882065A (en) * 1994-10-19 1999-03-16 Honda Giken Kogyo Kabushiki Kaisha Front body structure of automobile
DE19651627A1 (en) * 1996-12-12 1998-06-18 Opel Adam Ag Substructure of motor vehicle body
US6361102B1 (en) * 2000-11-01 2002-03-26 Hyundai Motor Company Front automotive reinforcement structure for distributing impact force
EP1439109A2 (en) * 2003-01-16 2004-07-21 Fuji Jukogyo Kabushiki Kaisha Front structure for vehicle
FR2934840B1 (en) 2008-08-08 2013-07-26 Peugeot Citroen Automobiles Sa BRANCHET FIXING SYSTEM ON A MOTOR VEHICLE
DE102010006669A1 (en) * 2010-02-03 2011-08-04 Audi Ag, 85057 Profile node for car body, has strengthening element connected with cast node parts, where cross beam made from steel material is attached at cast node parts and runs crosswise relative to longitudinal beam path
GB2496284A (en) * 2011-11-04 2013-05-08 Gm Global Tech Operations Inc Longitudinal frame portion of vehicle chassis

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FR3022516A1 (en) 2015-12-25

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