WO2018007718A1 - Reinforced metal beam for a motor vehicle - Google Patents

Reinforced metal beam for a motor vehicle Download PDF

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Publication number
WO2018007718A1
WO2018007718A1 PCT/FR2017/051704 FR2017051704W WO2018007718A1 WO 2018007718 A1 WO2018007718 A1 WO 2018007718A1 FR 2017051704 W FR2017051704 W FR 2017051704W WO 2018007718 A1 WO2018007718 A1 WO 2018007718A1
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WO
WIPO (PCT)
Prior art keywords
reinforcement
spar
section
motor vehicle
hollow
Prior art date
Application number
PCT/FR2017/051704
Other languages
French (fr)
Inventor
Loïc REY
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 CN201780041177.8A priority Critical patent/CN109415091B/en
Priority to EP17745797.5A priority patent/EP3481704A1/en
Publication of WO2018007718A1 publication Critical patent/WO2018007718A1/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
    • B62D25/02—Side panels
    • B62D25/025—Side sills thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • 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
    • B62D25/04—Door pillars ; windshield pillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D27/00—Connections between superstructure or understructure sub-units
    • B62D27/02—Connections between superstructure or understructure sub-units rigid
    • B62D27/023—Assembly of structural joints

Definitions

  • the invention relates to the field of motor vehicles. More particularly, the invention relates to the body structures of a motor vehicle.
  • the body structure of a motor vehicle has several hollow metal beams such as longitudinal members, stretchers (parallel longitudinal beams extending on either side of the passenger compartment) and sleepers. Due to their large cross sections, these beams may be deformed and have a longitudinal swirl resulting in a lack of rigidity of the vehicle body. It is therefore necessary to strengthen these beams.
  • the objective is to improve their rigidity with regard to shocks and torsion of cash in particular.
  • Figure 1 shows a body structure 2 of a motor vehicle of the state of the art.
  • Structure 2 is in this case a rocker structure of a vehicle.
  • the structure 2 comprises a spar 4, in this case a sill spar and a central pillar 6 rigidly fixed to an upper portion of said spar.
  • the spar comprises a reinforcement 8 placed inside said spar.
  • the reinforcement 8 has a complex shape.
  • the reinforcement is fixed in the spar by several electric welding points and by means of several screws which makes assembly difficult.
  • the manufacture of these reinforcements requires specific tools. This solution increases the costs and manufacturing time of the vehicle structure and more particularly the spar.
  • the published patent document FR 2 955 553 A1 discloses a device for reinforcing an elongate hollow body of the structure of a motor vehicle.
  • the device is a wooden core configured to be introduced into the hollow body by one of its ends.
  • the wooden core has a length substantially equal to that of the hollow body and a cross section smaller than that of the body.
  • the wooden core does not fill the entire hollow body and requires the addition of a resin in the hollow body to bind the core to the walls of the hollow body, which increases the manufacturing costs.
  • the invention aims to overcome at least one drawback of the state of the art mentioned above. More particularly, the invention aims to provide a beam reinforced metal body of a motor vehicle whose realization is facilitated. The invention also aims at a simple and economical solution.
  • the subject of the invention is a metal beam, in particular a motor vehicle body, comprising two longitudinal moldings of hollow and open cross-section, each stamped comprising, at the ends of the cross section of said stamping, two wings attached to the corresponding wings, respectively, of the other stamped, so as to form two longitudinal grooves of junction and to delimit a hollow and closed cross section of the beam; a reinforcement inside the beam; remarkable in that the reinforcement is a sheet metal element which extends transversely between the flanges of the stampings, from one of the rabbets to the other of said rabbets and has an extension beyond said rebate, outside the beam.
  • the beam may comprise one or more of the following characteristics, taken separately or according to all the possible technical combinations:
  • each of the two stampings is U-shaped, the U-sections being opposite to each other.
  • the wings and the reinforcement are welded together by electrical resistance welding.
  • the reinforcement is usually flat.
  • the reinforcement is perforated, preferably several times along the longitudinal direction of the beam.
  • the beam is a side sill of a motor vehicle.
  • the invention also relates to a body structure of a motor vehicle comprising a sill spar and a central foot rigidly fixed to an upper portion of said spar, the spar comprising: two longitudinal hollow and hollow cross section, each embossed comprising, at the ends of the cross section of said stamping, two wings fixed to the corresponding wings, respectively, of the other stamped, so as to form two longitudinal grooves of junction and to delimit a section hollow and closed cross section of the beam; a reinforcement which is a sheet metal element extending transversely between the flanges of the stampings, from one of the rabbets to the other of said rebates, characterized in that the reinforcement extends vertically continuously from the spar to middle foot.
  • the structure may comprise one or more of the following characteristics, taken individually or according to all the possible technical combinations:
  • the reinforcement generally extends vertically.
  • the reinforcement extends vertically continuously from the spar to the middle foot.
  • the extension of the reinforcement extends along a stamping of the middle foot and is attached to said stamped.
  • the reinforcement also called flat core, extends vertically continuously from the spar to the middle foot. More particularly, the extension of the reinforcement out of the spar extends along a stamping of the middle foot and is fixed to said stamped. This ensures with the same piece that extends beyond the spar, a central foot lining thus forming a reinforcement of the central foot.
  • the performance in vibration behavior (dynamic torsion) and in road behavior (static torsion) is thus advantageously improved, while preserving lateral impact performance.
  • the invention is interesting in that it provides a reinforced metal beam motor vehicle body having a simplified assembly.
  • the reinforcement of the beam extends transversely between the wings of the stampings of the beam and is welded with the wings.
  • the reinforcement thus provides a direct and rigid connection between the two grooves of the junction of the beam.
  • the assembly is simplified since the weld points of the joining rebates, already present, are used to fix the reinforcement, which makes it possible to reduce the weld points compared with the state of the art.
  • the reinforcement is generally flat which decreases the mass of the beam compared to the state of the art presented in FIG. 1 and thus reduces manufacturing costs.
  • the reinforcement also extends from a stamping of the middle foot of the vehicle structure which allows the use of an existing part of the structure of the vehicle. crate to reinforce the metal beam.
  • the reinforcement also benefits from an additional connection on the center pillar.
  • FIG. 1 represents a motor vehicle structure of the state of the art
  • FIG. 2 shows a motor vehicle structure according to the invention
  • FIG. 3 represents a perspective view of an example of reinforcement used in the structure according to the invention.
  • FIG. 2 represents a body structure 102 of a motor vehicle according to the invention.
  • the structure comprises a spar 104, in this case a rocker spar and a central pillar 106 rigidly fixed to an upper portion of said spar.
  • the spar 104 is a metal beam.
  • the metal beam comprises two longitudinal embossings 108 and 1 10 of hollow and open cross section.
  • Each stamping comprises, at the ends of the cross section of said stamping, two wings fixed to the corresponding wings, respectively, of the other stamped, so as to form two rabbets 1 12 and 1 14 longitudinal junction and to delimit a hollow cross section and closed beam.
  • the cross-section of each of the two stampings is U-shaped.
  • the U-shaped sections are opposed to each other so as to form the hollow metal beam.
  • the beam also comprises a reinforcement 1 16 inside said beam.
  • the reinforcement 1 16 is a sheet metal element which extends transversely between the flanges of the stampings from one of the rabbets to the other of said rabbets. The reinforcement is thus sandwiched between the wings of the stampings and thus connects the rabbets junction.
  • the beam is thus separated into two parallel hollow bodies of the same section.
  • the reinforcement 1 16 is generally flat and extends generally vertically.
  • the reinforcement 1 16 which may also be called a flat core, extends vertically continuously from the spar 104 to the middle foot 106. More particularly, the extension 1 18 of the reinforcement 1 16 extends along a stamped the middle foot 106 and is attached to said stamped. This ensures with the same piece that extends beyond the spar, a central foot lining thus forming a reinforcement of the central foot.
  • the wings of the stampings 108 and 1 10 and the reinforcement 1 16 are welded together by electric resistance welding. The weld points of the splice grooves 1 12 and 1 14 are thus used to fix the reinforcement, which simplifies the assembly of the reinforcement in the beam.
  • the reinforcement 1 16 may be perforated, it is preferably perforated along the longitudinal direction of the beam.
  • the reinforcement example 1 16 shown in FIG. 3 also shows that it has at one end a flange 1 17 extending substantially perpendicularly to the plane of the web of the reinforcement 1 16 towards one of the hollow bodies 108. A partition transverse to the hollow body 108 is thus added.
  • This flange 17 has flaps 19, 120 and 121 enabling it to be fixed on the walls of said hollow body 108 so as to extend transversely in said hollow body 108 from the reinforcement 1 16, thus forming a transverse partition in the beam. This improves even more the benefits of the beam.

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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 concerns a metal beam (104), in particular for a motor vehicle body, comprising two longitudinal pressings (108, 110) with a hollow, open cross-section, each pressing (108, 110) comprising, at the ends of the cross-section of said pressing, two wings attached respectively to the corresponding wings of the other pressing, so as to form two longitudinal joining rebates (112, 114) and delimit a hollow, closed cross-section of the beam. The beam (104) also comprises a reinforcement (116) inside said beam. The reinforcement (116) is a component made from sheet metal extending in a transverse direction between the wings of the pressings, from one of the rebates to the other of said rebates, and has an extension (118) extending beyond said rebate, out of the beam (104).

Description

POUTRE METALLIQUE RENFORCEE DE VEHICULE AUTOMOBILE  REINFORCED METAL BEAM OF MOTOR VEHICLE
L'invention a trait au domaine des véhicules automobiles. Plus particulièrement, l'invention a trait aux structures de caisse de véhicule automobile. The invention relates to the field of motor vehicles. More particularly, the invention relates to the body structures of a motor vehicle.
La structure de caisse d'un véhicule automobile présente plusieurs poutres métalliques creuses telles que les longerons, les brancards (poutres longitudinales parallèles s'étendant de part et d'autre de l'habitacle) et les traverses. En raison de leurs sections transversales importantes, ces poutres peuvent subir une déformation et présenter une vrille longitudinale engendrant un manque de rigidité de la caisse du véhicule. Il est donc nécessaire de renforcer ces poutres. L'objectif est d'améliorer leur rigidité à l'égard des chocs et de la torsion de caisse notamment. The body structure of a motor vehicle has several hollow metal beams such as longitudinal members, stretchers (parallel longitudinal beams extending on either side of the passenger compartment) and sleepers. Due to their large cross sections, these beams may be deformed and have a longitudinal swirl resulting in a lack of rigidity of the vehicle body. It is therefore necessary to strengthen these beams. The objective is to improve their rigidity with regard to shocks and torsion of cash in particular.
La figure 1 représente une structure de caisse 2 d'un véhicule automobile de l'état de l'art. La structure 2 est en l'occurrence une structure de bas de caisse d'un véhicule. La structure 2 comprend un longeron 4, en l'occurrence un longeron de bas de caisse et un pied milieu 6 rigidement fixé à une partie supérieure dudit longeron. Le longeron comprend un renfort 8 placé à l'intérieur dudit longeron. Le renfort 8 présente une forme complexe. Le renfort est fixé dans le longeron par plusieurs points de soudure électriques et au moyen de plusieurs vis ce qui rend complexe l'assemblage. De plus, en raison de leur forme, la fabrication de ces renforts nécessite un outillage spécifique. Cette solution augmente les coûts et le temps de fabrication de la structure du véhicule et plus particulièrement du longeron. Figure 1 shows a body structure 2 of a motor vehicle of the state of the art. Structure 2 is in this case a rocker structure of a vehicle. The structure 2 comprises a spar 4, in this case a sill spar and a central pillar 6 rigidly fixed to an upper portion of said spar. The spar comprises a reinforcement 8 placed inside said spar. The reinforcement 8 has a complex shape. The reinforcement is fixed in the spar by several electric welding points and by means of several screws which makes assembly difficult. In addition, because of their shape, the manufacture of these reinforcements requires specific tools. This solution increases the costs and manufacturing time of the vehicle structure and more particularly the spar.
Le document de brevet publié FR 2 955 553 A1 divulgue un dispositif de renforcement d'un corps creux allongé de la structure d'un véhicule automobile. Le dispositif est une âme en bois configurée pour être introduite dans le corps creux par une de ses extrémités. L'âme en bois a une longueur sensiblement égale à celle du corps creux et une section transversale inférieure à celle du corps. L'âme en bois ne comble pas tout le corps creux et nécessite l'ajout d'une résine dans le corps creux afin de lier l'âme aux parois du corps creux, ce qui augmente les coûts de fabrication. The published patent document FR 2 955 553 A1 discloses a device for reinforcing an elongate hollow body of the structure of a motor vehicle. The device is a wooden core configured to be introduced into the hollow body by one of its ends. The wooden core has a length substantially equal to that of the hollow body and a cross section smaller than that of the body. The wooden core does not fill the entire hollow body and requires the addition of a resin in the hollow body to bind the core to the walls of the hollow body, which increases the manufacturing costs.
L'invention a pour objectif de pallier au moins un inconvénient de l'état de l'art susmentionné. Plus particulièrement, l'invention a pour objectif de fournir une poutre métallique renforcée de caisse de véhicule automobile dont la réalisation est facilitée. L'invention a également pour objectif une solution simple et économique. The invention aims to overcome at least one drawback of the state of the art mentioned above. More particularly, the invention aims to provide a beam reinforced metal body of a motor vehicle whose realization is facilitated. The invention also aims at a simple and economical solution.
L'invention a pour objet une poutre métallique, notamment de caisse de véhicule automobile, comprenant deux emboutis longitudinaux de section transversale creuse et ouverte, chaque embouti comprenant, aux extrémités de la section transversale dudit embouti, deux ailes fixées aux ailes correspondantes, respectivement, de l'autre embouti, de manière à former deux feuillures longitudinales de jonction et à délimiter une section transversale creuse et fermée de la poutre ; un renfort à l'intérieur de la poutre ; remarquable en ce que le renfort est un élément en tôle métallique qui s'étend transversalement entre les ailes des emboutis, depuis une des feuillures jusqu'à l'autre desdites feuillures et présente une extension au-delà de ladite feuillure, en dehors de la poutre. The subject of the invention is a metal beam, in particular a motor vehicle body, comprising two longitudinal moldings of hollow and open cross-section, each stamped comprising, at the ends of the cross section of said stamping, two wings attached to the corresponding wings, respectively, of the other stamped, so as to form two longitudinal grooves of junction and to delimit a hollow and closed cross section of the beam; a reinforcement inside the beam; remarkable in that the reinforcement is a sheet metal element which extends transversely between the flanges of the stampings, from one of the rabbets to the other of said rabbets and has an extension beyond said rebate, outside the beam.
Selon des modes particuliers de réalisation, la poutre peut comprendre une ou plusieurs des caractéristiques suivantes, prises isolément ou selon toutes les combinaisons techniques possibles : According to particular embodiments, the beam may comprise one or more of the following characteristics, taken separately or according to all the possible technical combinations:
- La section transversale de chacun des deux emboutis est en forme de U, les sections en U étant opposées l'une à l'autre. - The cross section of each of the two stampings is U-shaped, the U-sections being opposite to each other.
- A chacune des feuillures de jonction, les ailes et le renfort sont soudés ensemble par soudure à résistance électrique. - Le renfort est généralement plan. - At each of the joining rebates, the wings and the reinforcement are welded together by electrical resistance welding. - The reinforcement is usually flat.
- Le renfort est ajouré, préférentiellement à plusieurs reprises le long de la direction longitudinale de la poutre. - The reinforcement is perforated, preferably several times along the longitudinal direction of the beam.
- La poutre est un longeron de bas de caisse de véhicule automobile. - The beam is a side sill of a motor vehicle.
L'invention a également pour objet une structure de caisse de véhicule automobile comprenant un longeron de bas de caisse et un pied milieu rigidement fixé à une partie supérieure dudit longeron, le longeron comprenant : deux emboutis longitudinaux de section transversale creuse et ouverte, chaque embouti comprenant, aux extrémités de la section transversale dudit embouti, deux ailes fixées aux ailes correspondantes, respectivement, de l'autre embouti, de manière à former deux feuillures longitudinales de jonction et à délimiter une section transversale creuse et fermée de la poutre ; un renfort qui est un élément en tôle métallique s'étendant transversalement entre les ailes des emboutis, depuis une des feuillures jusqu'à l'autre desdites feuillures caractérisée en ce que le renfort s'étend verticalement de manière continue depuis le longeron jusqu'au pied milieu. Selon des modes particuliers de réalisation, la structure peut comprendre une ou plusieurs des caractéristiques suivantes, prises isolément ou selon toutes les combinaisons techniques possibles : The invention also relates to a body structure of a motor vehicle comprising a sill spar and a central foot rigidly fixed to an upper portion of said spar, the spar comprising: two longitudinal hollow and hollow cross section, each embossed comprising, at the ends of the cross section of said stamping, two wings fixed to the corresponding wings, respectively, of the other stamped, so as to form two longitudinal grooves of junction and to delimit a section hollow and closed cross section of the beam; a reinforcement which is a sheet metal element extending transversely between the flanges of the stampings, from one of the rabbets to the other of said rebates, characterized in that the reinforcement extends vertically continuously from the spar to middle foot. According to particular embodiments, the structure may comprise one or more of the following characteristics, taken individually or according to all the possible technical combinations:
- Le renfort s'étend généralement verticalement. - The reinforcement generally extends vertically.
- Le renfort s'étend verticalement de manière continue depuis le longeron jusqu'au pied milieu. - The reinforcement extends vertically continuously from the spar to the middle foot.
- L'extension du renfort s'étend le long d'un embouti du pied milieu et est fixé audit embouti. - The extension of the reinforcement extends along a stamping of the middle foot and is attached to said stamped.
Le renfort également appelé âme plate, s'étend verticalement de manière continue depuis le longeron jusqu'au pied milieu. Plus particulièrement, l'extension du renfort hors du longeron s'étend le long d'un embouti du pied milieu et est fixé audit embouti. On assure ainsi avec la même pièce qui se prolonge au-delà du longeron, une doublure de pied central formant ainsi un renfort du pied central. On améliore ainsi avantageusement la prestation en comportement vibratoire (torsion dynamique) et en comportement routier (torsion statique), tout en préservant la prestation en choc latéral. The reinforcement also called flat core, extends vertically continuously from the spar to the middle foot. More particularly, the extension of the reinforcement out of the spar extends along a stamping of the middle foot and is fixed to said stamped. This ensures with the same piece that extends beyond the spar, a central foot lining thus forming a reinforcement of the central foot. The performance in vibration behavior (dynamic torsion) and in road behavior (static torsion) is thus advantageously improved, while preserving lateral impact performance.
L'invention est intéressante en ce qu'elle propose une poutre métallique renforcée de caisse de véhicule automobile présentant un assemblage simplifié. En effet, le renfort de la poutre s'étend transversalement entre les ailes des emboutis de la poutre et est soudé avec les ailes. Le renfort assure ainsi une liaison directe et rigide entre les deux feuillures de jonction de la poutre. L'assemblage est simplifié puisqu'on utilise les points de soudure des feuillures de jonction, déjà présents, pour fixer le renfort, ce qui permet de diminuer les points de soudure par rapport à l'état de l'art. Le renfort est généralement plan ce qui diminue la masse de la poutre par rapport à l'état de l'art présenté en figure 1 et diminue donc les coûts de fabrication. Le renfort s'étend également depuis un embouti du pied milieu de la structure du véhicule ce qui permet l'utilisation d'une pièce déjà existante de la structure de caisse pour renforcer la poutre métallique. Le renfort bénéficie également d'une liaison supplémentaire sur le pied milieu. The invention is interesting in that it provides a reinforced metal beam motor vehicle body having a simplified assembly. Indeed, the reinforcement of the beam extends transversely between the wings of the stampings of the beam and is welded with the wings. The reinforcement thus provides a direct and rigid connection between the two grooves of the junction of the beam. The assembly is simplified since the weld points of the joining rebates, already present, are used to fix the reinforcement, which makes it possible to reduce the weld points compared with the state of the art. The reinforcement is generally flat which decreases the mass of the beam compared to the state of the art presented in FIG. 1 and thus reduces manufacturing costs. The reinforcement also extends from a stamping of the middle foot of the vehicle structure which allows the use of an existing part of the structure of the vehicle. crate to reinforce the metal beam. The reinforcement also benefits from an additional connection on the center pillar.
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 représente une structure de véhicule automobile de l'état de l'art ;Other features and advantages of the present invention will be better understood from the description and drawings in which: FIG. 1 represents a motor vehicle structure of the state of the art;
- La figure 2 représente une structure de véhicule automobile selon l'invention ;- Figure 2 shows a motor vehicle structure according to the invention;
- La figure 3 représente une vue en perspective d'un exemple de renfort utilisé dans la structure selon l'invention. FIG. 3 represents a perspective view of an example of reinforcement used in the structure according to the invention.
La figure 2 représente une structure de caisse 102 de véhicule automobile selon l'invention. La structure comprend un longeron 104, en l'occurrence un longeron de bas de caisse et un pied milieu 106 rigidement fixé à une partie supérieure dudit longeron. Le longeron 104 est une poutre métallique. La poutre métallique comprend deux emboutis longitudinaux 108 et 1 10 de section transversale creuse et ouverte. Chaque embouti comprend, aux extrémités de la section transversale dudit embouti, deux ailes fixées aux ailes correspondantes, respectivement, de l'autre embouti, de manière à former deux feuillures 1 12 et 1 14 longitudinales de jonction et à délimiter une section transversale creuse et fermée de la poutre. La section transversale de chacun des deux emboutis est en forme de U. Les sections en U sont opposées l'une à l'autre de manière à former la poutre métallique creuse. La poutre comprend également un renfort 1 16 à l'intérieur de ladite poutre. Le renfort 1 16 est un élément en tôle métallique qui s'étend transversalement entres les ailes des emboutis depuis une des feuillures jusqu'à l'autre desdites feuillures. Le renfort est ainsi pris en sandwich entre les ailes des emboutis et relie ainsi les feuillures de jonction. La poutre est ainsi séparée en deux corps creux parallèles de même section. Le renfort 1 16 est généralement plan et s'étend généralement verticalement.  FIG. 2 represents a body structure 102 of a motor vehicle according to the invention. The structure comprises a spar 104, in this case a rocker spar and a central pillar 106 rigidly fixed to an upper portion of said spar. The spar 104 is a metal beam. The metal beam comprises two longitudinal embossings 108 and 1 10 of hollow and open cross section. Each stamping comprises, at the ends of the cross section of said stamping, two wings fixed to the corresponding wings, respectively, of the other stamped, so as to form two rabbets 1 12 and 1 14 longitudinal junction and to delimit a hollow cross section and closed beam. The cross-section of each of the two stampings is U-shaped. The U-shaped sections are opposed to each other so as to form the hollow metal beam. The beam also comprises a reinforcement 1 16 inside said beam. The reinforcement 1 16 is a sheet metal element which extends transversely between the flanges of the stampings from one of the rabbets to the other of said rabbets. The reinforcement is thus sandwiched between the wings of the stampings and thus connects the rabbets junction. The beam is thus separated into two parallel hollow bodies of the same section. The reinforcement 1 16 is generally flat and extends generally vertically.
Le renfort 1 16, pouvant également être appelé âme plate, s'étend verticalement de manière continue depuis le longeron 104 jusqu'au pied milieu 106. Plus particulièrement, l'extension 1 18 du renfort 1 16 s'étend le long d'un embouti du pied milieu 106 et est fixé audit embouti. On assure ainsi avec la même pièce qui se prolonge au-delà du longeron, une doublure de pied central formant ainsi un renfort du pied central. A chacune des feuillures de jonction 1 12 et 1 14, les ailes des emboutis 108 et 1 10 et le renfort 1 16 sont soudés ensemble par soudure à résistance électrique. Les points de soudures des feuillures de jonctions 1 12 et 1 14 sont ainsi utilisés pour fixer le renfort, ce qui simplifie l'assemblage du renfort dans la poutre. Le renfort 1 16 peut être ajouré, il est préférentiellement ajouré le long de la direction longitudinale de la poutre. The reinforcement 1 16, which may also be called a flat core, extends vertically continuously from the spar 104 to the middle foot 106. More particularly, the extension 1 18 of the reinforcement 1 16 extends along a stamped the middle foot 106 and is attached to said stamped. This ensures with the same piece that extends beyond the spar, a central foot lining thus forming a reinforcement of the central foot. At each of the joining rabbets 1 12 and 1 14, the wings of the stampings 108 and 1 10 and the reinforcement 1 16 are welded together by electric resistance welding. The weld points of the splice grooves 1 12 and 1 14 are thus used to fix the reinforcement, which simplifies the assembly of the reinforcement in the beam. The reinforcement 1 16 may be perforated, it is preferably perforated along the longitudinal direction of the beam.
L'exemple de renfort 1 16 représenté à la figure 3, montre également qu'il présente à une extrémité une aile 1 17 s'étendant sensiblement perpendiculairement au plan de l'âme du renfort 1 16 vers l'un des corps creux 108. On ajoute ainsi une cloison transversale aux corps creux 108. Cette aile 1 17 présente des rabats 1 19, 120 et 121 lui permettant d'être fixée sur les parois dudit corps creux 108 de sorte à s'étendre transversalement dans ledit corps creux 108 depuis le renfort 1 16, formant ainsi une cloison transversale dans la poutre. On améliore ainsi encore plus les prestations de la poutre.  The reinforcement example 1 16 shown in FIG. 3 also shows that it has at one end a flange 1 17 extending substantially perpendicularly to the plane of the web of the reinforcement 1 16 towards one of the hollow bodies 108. A partition transverse to the hollow body 108 is thus added. This flange 17 has flaps 19, 120 and 121 enabling it to be fixed on the walls of said hollow body 108 so as to extend transversely in said hollow body 108 from the reinforcement 1 16, thus forming a transverse partition in the beam. This improves even more the benefits of the beam.

Claims

REVENDICATIONS
1 . Poutre métallique (104), notamment de caisse de véhicule automobile, comprenant : 1. Metal beam (104), in particular of a motor vehicle body, comprising:
- deux emboutis (108,1 10) longitudinaux de section transversale creuse et ouverte, chaque embouti comprenant, aux extrémités de la section transversale dudit embouti, deux ailes fixées aux ailes correspondantes, respectivement, de l'autre embouti, de manière à former deux feuillures (1 12,1 14) longitudinales de jonction et à délimiter une section transversale creuse et fermée de la poutre ;  two longitudinal stampings (108, 10) of hollow and open cross-section, each stamp comprising, at the ends of the cross-section of said stamp, two wings fixed to the corresponding wings, respectively, of the other stamped, so as to form two longitudinal grooves (1 12, 14) for joining and delimiting a hollow and closed cross-section of the beam;
- un renfort (1 16) à l'intérieur de la poutre ;  - a reinforcement (1 16) inside the beam;
caractérisée en ce que  characterized in that
le renfort (1 16) est un élément en tôle métallique qui s'étend transversalement entre les ailes des emboutis, depuis une des feuillures jusqu'à l'autre desdites feuillures et présente une extension (1 18) au-delà de ladite feuillure, en dehors de la poutre (104).  the reinforcement (1 16) is a sheet metal element which extends transversely between the flanges of the stampings, from one of the rabbets to the other of said rebates and has an extension (1 18) beyond said rabbet, outside the beam (104).
2. Poutre (104) selon la revendication 1 , que le renfort (1 16) présente à une extrémité une aile (1 17) s'étendant sensiblement perpendiculairement au plan de l'âme du renfort (1 16) vers l'un des corps creux (108, 1 10). 2. Beam (104) according to claim 1, that the reinforcement (1 16) has at one end a flange (1 17) extending substantially perpendicularly to the plane of the core of the reinforcement (1 16) to one of hollow body (108, 1 10).
3. Poutre (104) selon la revendication 2, caractérisée en ce que l'aile (1 17) présente des rabats (1 19, 120 et 121 ) lui permettant d'être fixée sur les parois dudit corps creux (108, 1 10). 3. Beam (104) according to claim 2, characterized in that the flange (1 17) has flaps (1 19, 120 and 121) allowing it to be fixed on the walls of said hollow body (108, 1 10). ).
4. Poutre (104) selon l'une des revendications 1 à 3, caractérisée en ce que la section transversale de chacun des deux emboutis (108,1 10) est en forme de U, les sections en U étant opposées l'une à l'autre. 4. Beam (104) according to one of claims 1 to 3, characterized in that the cross section of each of the two stampings (108,1 10) is U-shaped, the U-sections being opposite one to the other.
5. Poutre (104) selon l'une des revendications 1 à 4, caractérisée en ce qu'à chacune des feuillures de jonction (1 12,1 14), les ailes et le renfort (1 16) sont soudés ensemble par soudure à résistance électrique. 5. Beam (104) according to one of claims 1 to 4, characterized in that each of the joining rabbets (1 12.1 14), the wings and the reinforcement (1 16) are welded together by welding to electrical resistance.
6. Poutre (104) selon l'une des revendications 1 à 5, caractérisée en ce que le renfort (1 16) est généralement plan. 6. Beam (104) according to one of claims 1 to 5, characterized in that the reinforcement (1 16) is generally plane.
7. Poutre (104) selon l'une des revendications 1 à 6, caractérisée en ce que le renfort (1 16) est ajouré, préférentiellement à plusieurs reprises le long de la direction longitudinale de la poutre. 7. Beam (104) according to one of claims 1 to 6, characterized in that the reinforcement (1 16) is perforated, preferably several times along the longitudinal direction of the beam.
8. Poutre (104) selon l'une des revendications 1 à 5, caractérisée en ce qu'elle est un longeron de bas de caisse de véhicule automobile. 8. Beam (104) according to one of claims 1 to 5, characterized in that it is a side sill of a motor vehicle.
9. Structure (102) de caisse de véhicule automobile comprenant un longeron (104) de bas de caisse et un pied milieu (106) rigidement fixé à une partie supérieure dudit longeron, caractérisée en ce que le longeron (104) est une poutre selon l'une des revendications 1 à 8. Motor vehicle body structure (102) comprising a rocker spar (104) and a central pillar (106) rigidly fixed to an upper portion of said spar, characterized in that the spar (104) is a beam according to one of claims 1 to 8.
10. Structure (102) selon la revendication 9, caractérisée en ce que le renfort (1 16) s'étend généralement verticalement. 10. Structure (102) according to claim 9, characterized in that the reinforcement (1 16) extends generally vertically.
1 1 . Structure (102) selon l'une des revendications 9 et 10, caractérisée en ce que le renfort (1 16) s'étend verticalement de manière continue depuis le longeron (104) jusqu'au pied milieu (106). 1 1. Structure (102) according to one of claims 9 and 10, characterized in that the reinforcement (1 16) extends vertically continuously from the spar (104) to the central pillar (106).
12. Structure (102) selon la revendication 1 1 , caractérisée en ce que l'extension (1 18) du renfort (1 16) s'étend le long d'un embouti du pied milieu (106) et est fixé audit embouti. 12. Structure (102) according to claim 1 1, characterized in that the extension (1 18) of the reinforcement (1 16) extends along a stamping of the central pillar (106) and is fixed to said stamped.
PCT/FR2017/051704 2016-07-05 2017-06-27 Reinforced metal beam for a motor vehicle WO2018007718A1 (en)

Priority Applications (2)

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CN201780041177.8A CN109415091B (en) 2016-07-05 2017-06-27 Reinforced metal beam for motor vehicles
EP17745797.5A EP3481704A1 (en) 2016-07-05 2017-06-27 Reinforced metal beam for a motor vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1656395A FR3053654B1 (en) 2016-07-05 2016-07-05 REINFORCED METAL BEAM OF MOTOR VEHICLE
FR1656395 2016-07-05

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CN (1) CN109415091B (en)
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CN109415091B (en) 2021-12-28
EP3481704A1 (en) 2019-05-15
FR3053654A1 (en) 2018-01-12
CN109415091A (en) 2019-03-01

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