EP1663763A1 - Cross member comprising a reinforced section for a motor vehicle - Google Patents

Cross member comprising a reinforced section for a motor vehicle

Info

Publication number
EP1663763A1
EP1663763A1 EP04787341A EP04787341A EP1663763A1 EP 1663763 A1 EP1663763 A1 EP 1663763A1 EP 04787341 A EP04787341 A EP 04787341A EP 04787341 A EP04787341 A EP 04787341A EP 1663763 A1 EP1663763 A1 EP 1663763A1
Authority
EP
European Patent Office
Prior art keywords
cross member
hollow body
motor vehicle
tube
reinforced section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04787341A
Other languages
German (de)
French (fr)
Inventor
Christian Brancheriau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Faurecia Interieur Industrie SAS
Original Assignee
Faurecia Interieur Industrie SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR0310619A external-priority patent/FR2859445B1/en
Application filed by Faurecia Interieur Industrie SAS filed Critical Faurecia Interieur Industrie SAS
Publication of EP1663763A1 publication Critical patent/EP1663763A1/en
Withdrawn legal-status Critical Current

Links

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
    • B62D25/14—Dashboards as superstructure sub-units
    • B62D25/145—Dashboards as superstructure sub-units having a crossbeam incorporated therein

Definitions

  • Cross member for a motor vehicle comprising a reinforced section.
  • the present invention relates to a cross member for a motor vehicle, of the type comprising at least one tube extending along a longitudinal direction, the cross member having a reinforced section.
  • the invention applies in particular to a dashboard cross member.
  • Such a cross member extends along the transverse and horizontal direction of the motor vehicle, generally called the Y axis.
  • the cross member is connected by its ends to the so-called A uprights of the body of the motor vehicle. It is intended to support on the one hand the dashboard, and on the other hand the steering column, via its reinforced section.
  • the reinforced section has an increased rigidity and therefore an inherent frequency of vibration which make it possible to meet the requirements of motor vehicle manufacturers with regard to the structure supporting the steering column.
  • the crosspiece comprises two tubes arranged end to end, one of smaller thickness and the other of greater thickness. These two tubes are welded to each other.
  • the thicker section constitutes the reinforced section.
  • Such sleepers meet the requirements of motor vehicle manufacturers, but have high masses.
  • An object of the invention is to solve this problem by providing a cross member of the aforementioned type which is of reduced mass.
  • the invention relates to a cross member of the aforementioned type, characterized in that it comprises, in its reinforced section, a hollow body distinct from the tube and at least one transverse reinforcing member disposed in the tube.
  • the crossmember may include one or more of the following characteristics, taken alone or in any technically possible combination: - the hollow body has a substantially tubular shape extending along the longitudinal direction of the tube, L - the hollow body is provided with means for mounting equipment on the cross member, - the transverse reinforcing member is arranged longitudinally opposite the mounting means, - the mounting means came integrally with the hollow body, - the hollow body at least partially surrounds the tube, - the tube extends longitudinally over the entire length of the hollow body, - the hollow body is secured to means for fixing the cross member to the body of the motor vehicle,.
  • the fixing means comprise: • a device for connecting a lateral end of the cross member to a lateral upright of the body of the motor vehicle, and • a strut for connecting the cross member to the floor of the body of the motor vehicle, -
  • the hollow body comprises at least two assembled shells, - the shells have different thicknesses, and - the hollow body is at least partly formed by a stamped part.
  • the invention also relates to an assembly comprising a dashboard cross member for a motor vehicle and a steering column mounted on the cross member, characterized in that the cross member is a cross member as defined above.
  • the invention further relates to a motor vehicle, characterized in that it comprises an assembly as defined above.
  • FIG. 1 is a schematic perspective view of a cross dashboard according to a first embodiment of the invention
  • - Figure 2 is a schematic exploded perspective view of ja cross member of Figure 1
  • - Figure 3 is a schematic view, partial and from above, illustrating the reinforced section of the cross member of Figures 1 and 2
  • - Figure 4 is a view similar to FIG. 2 illustrating a second embodiment of the invention.
  • the orientations used are the usual orientations of a motor vehicle.
  • the terms "front”, “rear”, “right” and “left” are understood in relation to the direction of travel of the motor vehicle and the position of a driver.
  • FIGS. 1 to 3 illustrate a crossmember 1 of a dashboard for a motor vehicle, this crossmember 1 mainly comprising: - a tube 3, - devices 5 for connecting the ends 7 of the tube 3 to the body of the motor vehicle, - a leg force 9 to link the cross member 1 to the floor of the motor vehicle, - a hollow body 11 for reinforcing a left section 13 of the cross member 1, and - an element 14 for fixing the strut 9 to the hollow body 11
  • the tube 3 extends along a direction D intended to be transverse and horizontal, that is to say coincident with the axis Y of the motor vehicle in which the cross member 1 is mounted.
  • the tube 3 has for example a substantially circular section over its entire length.
  • Spacers 15 have been threaded on the left section of the tube 3, to form the reinforced section 13 of the cross member 1, as will be described later. These spacers 15 have shapes substantially complementary to that of the interior of the hollow body 11.
  • the spacers 15 have for example been fixed by welds to the tube 3.
  • the connecting devices 5 each comprise a front bracket 17 and a rear bracket 19 welded to each other along two wings 21 and 23 extending vertically. These brackets 17 and 19 have for example been fixed by screws to the ends 7 of the tube 3.
  • Each connecting device 5 may further comprise other members, for example a tie rod 24 such as that shown on the device 5 left of the Figure 1.
  • the devices 5 are used to connect the ends 7 of the tube 3 and therefore the cross member 1 to the so-called A amounts of the body of the motor vehicle.
  • the hollow body 11 comprises an upper shell 23 and a lower shell 25.
  • the shells 23 and 25 are for example formed by stamping of sheets.
  • the upper shell 23 includes a flared central region 27 to extend forward and backward.
  • the left end of the upper shell 23 further includes a reinforcement bracket 29.
  • the lower shell 25 has legs extending forward and backward to form a plate 31.
  • the left end of the shell lower 25 also includes a reinforcement bracket 33.
  • the hollow body 11 is formed by assembling the shells 23 and 25.
  • the hollow body 11 that is to say the shells 23 and 25 surround the spacers 15 and the tube 3 in the left section 13.
  • the shells 23 and 25 are then for example welded between them as well as on the spacers 15 on which they bear.
  • the spacers 15 therefore transversely reinforce the hollow body 11.
  • the two central spacers 15 are arranged along the direction D in line with the means 34 for mounting the steering column 35.
  • these two spacers 15 can be located at the sight , of screws used to fix the steering column 35 to the mounting means 34.
  • the tube 3 extends along the direction D over the entire length of the hollow body 11.
  • the reinforcing brackets 29 and 33 of the hollow body 11 are fixed, for example by screws to the connecting device 5 left.
  • the strut 9 is attached for example by welding 14 which is fixing member itself and welded / bolted or to the right end of the hollow body '11.
  • the lower end of the strut 9 is intended to be fixed, for example by screws, to the tunnel of the floor of the motor vehicle.
  • the cross member 1 supports the dashboard (not shown) of the motor vehicle as well as the steering column 35 which is shown diagrammatically in FIG. 1.
  • This steering column 35 is for example mounted by screwing on the mounting means 34.
  • the cross member 1 Due to the presence of the hollow body 11 and the spacers 15 on which it rests, the cross member 1 has rigidity and therefore an increased natural frequency in the reinforced section 13, and in particular at the level of the steering column 35.
  • the thickness of the hollow body 11 is low, which leads to an overall weight smaller than 'in the prior art. It has thus been found that such a structure could lead to a reduction in mass of between 10% and 20% for a crossmember 1 of the dashboard.
  • the mounting means 34 having come integrally with the hollow body 11, the cost of the cross member 1 is reduced. This is all the more true since the hollow body 11 is produced by stamping.
  • the number of spacers 15 may be different from that described above.
  • the body hollow 11 surrounds only by its right end the left end 7 of the tube 3 which is spaced from the left connecting device 5.
  • the spacer 15 left has been removed.
  • the spacer 15 right serves to ensure the connection between the hollow body 11 and the tube 3.
  • the two central spacers 15 are always arranged longitudinally at the flared region 27 of the upper shell 23 and the plate 31 of the lower shell 25. These two spacers 15 extend transversely from the upper shell 23 to the lower shell 25. These spacers 35 therefore transversely reinforce the hollow body 11 in line with the region intended to receive the steering column 35.
  • the cross member 1 of Figure 4 has a satisfactory rigidity.
  • the lower shell 25 may have a smaller thickness than that of the upper shell 23, without significantly reducing the mechanical properties of the cross member 1.
  • the reinforced section 13 can be used to mount other equipment.
  • a steering column, and the cross member 1 may be a cross member used in a motor vehicle at a location other than that of the dashboard.

Abstract

The inventive cross member for a motor vehicle comprises at least one tube (3) extending in a longitudinal direction (D) and a reinforced section (13) which is provided with a hollow body (11) which differs from the tube (3) and at least one reinforcing cross element (15) arranged on the tube (3). Said hollow body (11) comprises at least two assembled shells (23, 25) which are at least partly formed by a shaped piece (23, 25). Said invention can be used, for example for cross elements of a dashboard.

Description

Traverse pour véhicule automobile comprenant un tronçon renforcé. Cross member for a motor vehicle comprising a reinforced section.
La présente invention concerne une traverse pour véhicule automobile, du type comprenant au moins un tube s'étendant le long d'une direction longitudinale, la traverse présentant un tronçon renforcé. L'invention s'applique en particulier à une traverse de planche de bord. Une telle traverse s'étend le long de la direction transversale et horizontale du véhicule automobile, généralement dénommée axe Y. La traverse est reliée par ses extrémités aux montants dits A de la caisse du véhicule automobile. Elle est destinée à supporter d'une part la planche de bord, et d'autre part la colonne de direction, via son tronçon renforcé. Le tronçon renforcé possède une rigidité et donc une fréquence propre de vibration accrues qui permettent de satisfaire aux exigences des constructeurs de véhicules automobiles pour ce qui concerne la structure supportant la colonne de direction. Dans l'état de la technique, la traverse comprend deux tubes disposés bout à bout, l'un d'épaisseur plus faible et l'autre d'épaisseur plus importante. Ces deux tubes sont soudés l'un à l'autre. Le tronçon d'épaisseur plus importante constitue le tronçon renforcé. De telles traverses permettent de satisfaire aux exigences des constructeurs de véhicules automobiles, mais ont des masses élevées. Un but de l'invention est de résoudre ce problème en fournissant une traverse du type précité qui soit de masse réduite. A cet effet, l'invention a pour objet une traverse du type précité, caractérisée en ce qu'elle comprend, dans son tronçon renforcé, un corps creux distinct du tube et au moins un organe de renfort transversal disposé dans le tube. Selon des modes particuliers de réalisation, la traverse peut comprendre l'une ou plusieurs des caractéristiques suivantes, prise(s) isolément ou selon toutes les combinaisons techniquement possibles : - le corps creux a sensiblement une forme tubulaire s'étendant le long de la direction longitudinale du tube, L - le corps creux est muni de moyens de montage d'un équipement sur la traverse, - l'organe de renfort transversal est disposé longitudinalement en regard des moyens de montage, , - les moyens de montage sont venus de matière avec le corps creux, - le corps creux entoure au moins en partie le tube, - le tube s'étend longitudinalement sur toute la longueur du corps creux, - le corps creux est solidaire de moyens de fixation de la traverse sur la caisse du véhicule automobile, . - les moyens de fixation comprennent : • un dispositif de liaison d'une extrémité latérale de la traverse à un montant latéral de la caisse du véhicule automobile, et • une jambe de force pour lier la traverse au plancher de la caisse du véhicule automobile, - le corps creux comprend au moins deux coques assemblées, - les coques ont des épaisseurs différentes, et - le corps creux est au moins en partie formée par une pièce emboutie. L'invention a également pour objet un ensemble comprenant une traverse de planche de bord pour véhicule automobile et une colonne de direction montée sur la traverse, caractérisé en ce que la traverse est une traverse telle que définie ci-dessus. L'invention a en outre pour objet un véhicule automobile, caractérisé en ce qu'il comprend un ensemble tel que défini ci-dessus. L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple, et faite en se référant aux dessins annexés, sur lesquels : - la figure 1 est une vue schématique en perspective d'une traverse de planche de bord selon un premier mode de réalisation de l'invention, - la figure 2 est une vue schématique en perspective éclatée de ja traverse dé la figure 1 , - la figure 3 est une vue schématique, partielle et de dessus, illustrant le tronçon renforcé de la traverse des figures 1 et 2, et - la figure 4 est une vue analogue à la figure 2 illustrant un deuxième mode de réalisation de l'invention. Dans tout ce qui suit, les orientations utilisées sont les orientations habituelles d'un véhicule automobile. Ainsi, les termes « avant », « arrière », « droite » et « gauche » s'entendent par rapport au sens de marche du véhicule automobile et à la position d'un conducteur. Les figures 1 à 3 illustrent une traverse 1 de planche de bord pour véhicule automobile, cette traverse 1 comprenant principalement : - un tube 3, - des dispositifs 5 de liaison des extrémités 7 du tube 3 à la caisse du véhicule automobile, - une jambe de force 9 pour lier la traverse 1 au plancher du véhicule automobile, - un corps creux 11 de renfort d'un tronçon gauche 13 de la traverse 1 , et - un élément 14 de fixation de la jambe de force 9 sur le corps creux 11. Comme illustré plus particulièrement par la figure 2, le tube 3 s'étend le long d'une direction D destinée à être transversale et horizontale, c'est-à-dire confondue avec l'axe Y du véhicule automobile dans lequel la traverse 1 est montée. Le tube 3 a par exemple une section sensiblement circulaire sur toute sa longueur. Des entretoises 15 ont été enfilées sur le tronçon gauche du tube 3, pour former le tronçon renforcé 13 de la traverse 1 , comme cela sera décrit par la suite. Ces entretoises 15 ont des formes sensiblement complémentaires de celle de l'intérieur du corps creux 11. Les entretoises 15 ont par exemple été fixées par des soudures au tube 3. Les dispositifs de liaison 5 comprennent chacun une équerre avant 17 et une équerre arrière 19 soudées l'une à l'autre le long de deux ailes 21 et 23 s'étendant verticalement. Ces équerres 17 et 19 ont par exemple été fixées par des vis aux extrémités 7 du tube 3. Chaque dispositif de liaison 5 peut en outre comprendre d'autres organes, par exemple un tirant 24 tel que celui représenté sur le dispositif 5 gauche de la figure 1. Les dispositifs 5 permettent de relier les extrémités 7 du tube 3 et donc la traverse 1 aux montants dits A de la caisse du véhicule automobile. De tels dispositifs étant classiques, leur structure ne sera pas décrite plus en détail par la suite. Le corps creux 11 comprend une coque supérieure 23 et une coque inférieure 25. Les coques 23 et 25 sont par exemple formées par emboutissage de tôles. La coque supérieure 23 comprend une région centrale évasée 27 pour s'étendre vers l'avant et vers l'arrière. L'extrémité gauche de la coque supérieure 23 comporte en outre une équerre de renfort 29. La coque inférieure 25 comporte des pattes s'étendant vers l'avant et vers l'arrière pour former une platine 31. L'extrémité gauche de la coque inférieure 25 comporte également une équerre 33 de renfort. Le corps creux 11 est formé par assemblage des coques 23 et 25. Il a alors sensiblement une forme tubulaire creuse avec un tronçon central évasé, qui est formé par la région évasée 27 de la coque supérieure 23 et la platine 31 de la coque inférieure 25 et qui constitue des moyens 34 de montage d'une colonne de direction 35 (fig.1). Dans la traverse 1 de la figure 1 , le corps creux 11 , c'est-à-dire les coques 23 et 25 entourent les entretoises 15 et le tube 3 dans le tronçon gauche 13. Les coques 23 et 25 sont alors par exemple soudées entre elles ainsi que sur les entretoises 15 sur lesquelles elles prennent appui. Les entretoises 15 renforcent donc transversalement le corps creux 11. Les deux entretoises centrales 15 sont disposées le long de la direction D au droit des moyens 34 de montage de la colonne de direction 35. Plus précisément, ces deux entretoises 15 peuvent être situées au regard, de vis utilisées pour fixer la colonne de direction 35 sur les moyens 34 de montage. Dans l'exemple des figures 1 à 3, le tube 3 s'étend le long de la direction D sur toute la longueur du corps creux 11. Les équerres de renfort 29 et 33 du corps creux 11 sont fixées, par exemple par des vis au dispositif de liaison 5 gauche. La jambe de force 9 est par exemple fixée par soudage à l'élément de fixation 14 qui est lui-même soudé et/ou vissé à l'extrémité droite du corps creux ' 11. L'extrémité inférieure de la jambe de force 9 est destinée à être fixée, par exemple par des vis, au tunnel du plancher du véhicule automobile. Une fois ainsi installée dans le véhicule automobile, la traverse 1 supporte la planche de bord (non-représentée) du véhicule automobile ainsi que la colonne de direction 35 qui est schématisée sur la figure 1. Cette colonne de direction 35 est par exemple montée par vissage sur les moyens 34 de montage. Du fait de la présence du corps creux 11 et des entretoises 15 sur lesquelles il prend appui, la traverse 1 présente une rigidité et donc une fréquence propre accrue dans le tronçon renforcé 13, et notamment au droit de la colonne de direction 35. Pour autant, l'épaisseur du corps creux 11 est faible, ce qui conduit à une masse globale plus réduite que'dans l'état de la technique. On a ainsi constaté qu'une telle structure pouvait conduire à une réduction de masse comprise entre 10% et 20% pour une traverse 1 de planche de bord. On notera également que les moyens 34 de montage étant venus de matière avec le corps creux 11 , le coût de la traverse 1 est réduit. Cela est d'autant plus vrai que le corps creux 11 est réalisé par emboutissage. En variante, le nombre d'entretoises 15 peut être différent de celui décrit précédemment. Pour alléger encore la traverse 1 , il est possible de raccourcir le tube 3, comme illustré par la figure 4. Dans ce mode de réalisation, le tube 3 ne s'étend pratiquement pas dans le tronçon renforcé 13 de la traverse 1. Le corps creux 11 n'entoure que par son extrémité droite l'extrémité gauche 7 du tube 3 qui est espacé du dispositif de liaison 5 gauche. L'entretoise 15 gauche a été supprimée. L'entretoise 15 droite sert à assurer la liaison entre le corps creux 11 et le tube 3. Les deux entretoises centrales 15 sont toujours disposées longitudinalement au niveau de la région évasée 27 de la coque supérieure 23 et de la platine 31 de la coque inférieure 25. Ces deux entretoises 15 s'étendent transversalement de la coque supérieure 23 à la coque inférieure 25. Ces entretoises 35 renforcent donc transversalement le corps creux 11 au droit de la région destinée à recevoir la colonne de direction 35. Malgré la suppression de la majeure partie du tube 3 à l'intérieur du corps 11 , la traverse 1 de la figure 4 présente une rigidité satisfaisante. On notera également que la coque inférieure 25 peut présenter une épaisseur plus faible que celle de la coque supérieure 23, sans diminuer significativement les propriétés mécaniques de la traverse 1. De manière plus générale, le tronçon renforcé 13 peut être utilisé pour monter un autre équipement qu'une colonne de direction, et la traverse 1 peut être une traverse utilisée dans un véhicule automobile à un autre emplacement que celui de la planche de bord. The present invention relates to a cross member for a motor vehicle, of the type comprising at least one tube extending along a longitudinal direction, the cross member having a reinforced section. The invention applies in particular to a dashboard cross member. Such a cross member extends along the transverse and horizontal direction of the motor vehicle, generally called the Y axis. The cross member is connected by its ends to the so-called A uprights of the body of the motor vehicle. It is intended to support on the one hand the dashboard, and on the other hand the steering column, via its reinforced section. The reinforced section has an increased rigidity and therefore an inherent frequency of vibration which make it possible to meet the requirements of motor vehicle manufacturers with regard to the structure supporting the steering column. In the state of the art, the crosspiece comprises two tubes arranged end to end, one of smaller thickness and the other of greater thickness. These two tubes are welded to each other. The thicker section constitutes the reinforced section. Such sleepers meet the requirements of motor vehicle manufacturers, but have high masses. An object of the invention is to solve this problem by providing a cross member of the aforementioned type which is of reduced mass. To this end, the invention relates to a cross member of the aforementioned type, characterized in that it comprises, in its reinforced section, a hollow body distinct from the tube and at least one transverse reinforcing member disposed in the tube. According to particular embodiments, the crossmember may include one or more of the following characteristics, taken alone or in any technically possible combination: - the hollow body has a substantially tubular shape extending along the longitudinal direction of the tube, L - the hollow body is provided with means for mounting equipment on the cross member, - the transverse reinforcing member is arranged longitudinally opposite the mounting means, - the mounting means came integrally with the hollow body, - the hollow body at least partially surrounds the tube, - the tube extends longitudinally over the entire length of the hollow body, - the hollow body is secured to means for fixing the cross member to the body of the motor vehicle,. the fixing means comprise: • a device for connecting a lateral end of the cross member to a lateral upright of the body of the motor vehicle, and • a strut for connecting the cross member to the floor of the body of the motor vehicle, - The hollow body comprises at least two assembled shells, - the shells have different thicknesses, and - the hollow body is at least partly formed by a stamped part. The invention also relates to an assembly comprising a dashboard cross member for a motor vehicle and a steering column mounted on the cross member, characterized in that the cross member is a cross member as defined above. The invention further relates to a motor vehicle, characterized in that it comprises an assembly as defined above. The invention will be better understood on reading the description which follows, given solely by way of example, and made with reference to the accompanying drawings, in which: - Figure 1 is a schematic perspective view of a cross dashboard according to a first embodiment of the invention, - Figure 2 is a schematic exploded perspective view of ja cross member of Figure 1, - Figure 3 is a schematic view, partial and from above, illustrating the reinforced section of the cross member of Figures 1 and 2, and - Figure 4 is a view similar to FIG. 2 illustrating a second embodiment of the invention. In all that follows, the orientations used are the usual orientations of a motor vehicle. Thus, the terms "front", "rear", "right" and "left" are understood in relation to the direction of travel of the motor vehicle and the position of a driver. FIGS. 1 to 3 illustrate a crossmember 1 of a dashboard for a motor vehicle, this crossmember 1 mainly comprising: - a tube 3, - devices 5 for connecting the ends 7 of the tube 3 to the body of the motor vehicle, - a leg force 9 to link the cross member 1 to the floor of the motor vehicle, - a hollow body 11 for reinforcing a left section 13 of the cross member 1, and - an element 14 for fixing the strut 9 to the hollow body 11 As illustrated more particularly by FIG. 2, the tube 3 extends along a direction D intended to be transverse and horizontal, that is to say coincident with the axis Y of the motor vehicle in which the cross member 1 is mounted. The tube 3 has for example a substantially circular section over its entire length. Spacers 15 have been threaded on the left section of the tube 3, to form the reinforced section 13 of the cross member 1, as will be described later. These spacers 15 have shapes substantially complementary to that of the interior of the hollow body 11. The spacers 15 have for example been fixed by welds to the tube 3. The connecting devices 5 each comprise a front bracket 17 and a rear bracket 19 welded to each other along two wings 21 and 23 extending vertically. These brackets 17 and 19 have for example been fixed by screws to the ends 7 of the tube 3. Each connecting device 5 may further comprise other members, for example a tie rod 24 such as that shown on the device 5 left of the Figure 1. The devices 5 are used to connect the ends 7 of the tube 3 and therefore the cross member 1 to the so-called A amounts of the body of the motor vehicle. Since such devices are conventional, their structure will not be described in more detail below. The hollow body 11 comprises an upper shell 23 and a lower shell 25. The shells 23 and 25 are for example formed by stamping of sheets. The upper shell 23 includes a flared central region 27 to extend forward and backward. The left end of the upper shell 23 further includes a reinforcement bracket 29. The lower shell 25 has legs extending forward and backward to form a plate 31. The left end of the shell lower 25 also includes a reinforcement bracket 33. The hollow body 11 is formed by assembling the shells 23 and 25. It then has a substantially hollow tubular shape with a flared central section, which is formed by the flared region 27 of the upper shell 23 and the plate 31 of the lower shell 25 and which constitutes means 34 for mounting a steering column 35 (FIG. 1). In the cross member 1 of FIG. 1, the hollow body 11, that is to say the shells 23 and 25 surround the spacers 15 and the tube 3 in the left section 13. The shells 23 and 25 are then for example welded between them as well as on the spacers 15 on which they bear. The spacers 15 therefore transversely reinforce the hollow body 11. The two central spacers 15 are arranged along the direction D in line with the means 34 for mounting the steering column 35. More precisely, these two spacers 15 can be located at the sight , of screws used to fix the steering column 35 to the mounting means 34. In the example of FIGS. 1 to 3, the tube 3 extends along the direction D over the entire length of the hollow body 11. The reinforcing brackets 29 and 33 of the hollow body 11 are fixed, for example by screws to the connecting device 5 left. The strut 9 is attached for example by welding 14 which is fixing member itself and welded / bolted or to the right end of the hollow body '11. The lower end of the strut 9 is intended to be fixed, for example by screws, to the tunnel of the floor of the motor vehicle. Once thus installed in the motor vehicle, the cross member 1 supports the dashboard (not shown) of the motor vehicle as well as the steering column 35 which is shown diagrammatically in FIG. 1. This steering column 35 is for example mounted by screwing on the mounting means 34. Due to the presence of the hollow body 11 and the spacers 15 on which it rests, the cross member 1 has rigidity and therefore an increased natural frequency in the reinforced section 13, and in particular at the level of the steering column 35. However , the thickness of the hollow body 11 is low, which leads to an overall weight smaller than 'in the prior art. It has thus been found that such a structure could lead to a reduction in mass of between 10% and 20% for a crossmember 1 of the dashboard. It will also be noted that the mounting means 34 having come integrally with the hollow body 11, the cost of the cross member 1 is reduced. This is all the more true since the hollow body 11 is produced by stamping. As a variant, the number of spacers 15 may be different from that described above. To further lighten the cross member 1, it is possible to shorten the tube 3, as illustrated in FIG. 4. In this embodiment, the tube 3 practically does not extend in the reinforced section 13 of the cross member 1. The body hollow 11 surrounds only by its right end the left end 7 of the tube 3 which is spaced from the left connecting device 5. The spacer 15 left has been removed. The spacer 15 right serves to ensure the connection between the hollow body 11 and the tube 3. The two central spacers 15 are always arranged longitudinally at the flared region 27 of the upper shell 23 and the plate 31 of the lower shell 25. These two spacers 15 extend transversely from the upper shell 23 to the lower shell 25. These spacers 35 therefore transversely reinforce the hollow body 11 in line with the region intended to receive the steering column 35. Despite the elimination of the most of the tube 3 inside the body 11, the cross member 1 of Figure 4 has a satisfactory rigidity. It will also be noted that the lower shell 25 may have a smaller thickness than that of the upper shell 23, without significantly reducing the mechanical properties of the cross member 1. More generally, the reinforced section 13 can be used to mount other equipment. a steering column, and the cross member 1 may be a cross member used in a motor vehicle at a location other than that of the dashboard.

Claims

REVENDICATIONS 1. Traverse (1) pour véhicule automobile, du type comprenant au moins un tube (3) s'étendant le long d'une direction longitudinale (D), la traverse (1) présentant un tronçon renforcé (13), caractérisée en ce qu'elle comprend, dans son tronçon renforcé (13), un corps creux (11) distinct du tube (3) et au moins un organe de renfort transversal (15) disposé dans le tube (3), le corps creux (11) comprenant au moins deux coques (23, 25) assemblées et étant au moins en partie formé par une pièce emboutie (23, 25).  CLAIMS 1. Cross member (1) for a motor vehicle, of the type comprising at least one tube (3) extending along a longitudinal direction (D), the cross member (1) having a reinforced section (13), characterized in what it includes, in its reinforced section (13), a hollow body (11) separate from the tube (3) and at least one transverse reinforcing member (15) disposed in the tube (3), the hollow body (11 ) comprising at least two shells (23, 25) assembled and being at least partially formed by a stamped part (23, 25).
2. Traverse selon la revendication 1 , caractérisée en ce que le corps creux (11) a sensiblement une forme tubulaire s'étendant le long de la direction longitudinale (D) du tube. 2. Traverse according to claim 1, characterized in that the hollow body (11) has a substantially tubular shape extending along the longitudinal direction (D) of the tube.
3. Traverse selon la revendication 1 ou 2, caractérisée en ce que le corps creux (11) est muni de moyens (34) de montage d'un équipement (35) sur la traverse (1). 3. Cross member according to claim 1 or 2, characterized in that the hollow body (11) is provided with means (34) for mounting an equipment (35) on the cross member (1).
4. Traverse selon la revendication 3, caractérisée en ce que l'organe de renfort transversal (15) est disposé longitudinalement en regard des moyens4. Cross member according to claim 3, characterized in that the transverse reinforcing member (15) is arranged longitudinally opposite the means
(34) de montage. (34) mounting.
5. Traverse selon la revendication 3 ou 4, caractérisée en ce que les moyens (34) de montage sont venus de matière avec le corps creux (11). 5. Traverse according to claim 3 or 4, characterized in that the mounting means (34) came integrally with the hollow body (11).
6. Traverse selon l'une des revendications précédentes, caractérisée en ce que le corps creux (11) entoure au moins en partie le tube (3). 6. Traverse according to one of the preceding claims, characterized in that the hollow body (11) at least partially surrounds the tube (3).
7. Traverse selon la revendication 6, caractérisée en ce que le tube (3) s'étend longitudinalement sur toute la longueur du corps creux (11). 7. Traverse according to claim 6, characterized in that the tube (3) extends longitudinally over the entire length of the hollow body (11).
8. Traverse selon l'une des revendications précédentes, caractérisée en ce que le corps creux (11) est solidaire de moyens (5, 9) de fixation de la traverse (1) sur la caisse du véhicule automobile. 8. Cross member according to one of the preceding claims, characterized in that the hollow body (11) is integral with means (5, 9) for fixing the cross member (1) on the body of the motor vehicle.
9. Traverse selon la revendication 8, caractérisée en ce que les moyens de fixation comprennent : - un dispositif (5) de liaison d'une extrémité latérale (7) de la traverse (1) à un montant latéral de la caisse du véhicule automobile, et - une jambe de force (9) pour lier la traverse (1) au plancher de la caisse du véhicule automobile. 9. Cross member according to claim 8, characterized in that the fixing means comprise: - a device (5) for connecting a lateral end (7) of the cross member (1) to a lateral upright of the body of the motor vehicle , and - a strut (9) for connecting the crossmember (1) to the floor of the body of the motor vehicle.
10. Traverse selon l'une quelconque des revendications 1 à 9, caractérisée en ce que les coques (23, 25) ont des épaisseurs différentes. 10. Traverse according to any one of claims 1 to 9, characterized in that the shells (23, 25) have different thicknesses.
11. Ensemble comprenant une traverse (1) de planche de bord pour véhicule automobile et une colonne de direction (35) montée sur la traverse, caractérisé en ce que la traverse est une traverse (1) selon l'une des revendications précédentes. 11. An assembly comprising a crosspiece (1) for a dashboard for a motor vehicle and a steering column (35) mounted on the crosspiece, characterized in that the crosspiece is a crosspiece (1) according to one of the preceding claims.
12. Véhicule automobile, caractérisé en ce qu'il comprend un ensemble selon la revendication 11. 12. Motor vehicle, characterized in that it comprises an assembly according to claim 11.
EP04787341A 2003-09-09 2004-09-09 Cross member comprising a reinforced section for a motor vehicle Withdrawn EP1663763A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0310619A FR2859445B1 (en) 2003-09-09 2003-09-09 TRAVERSE FOR MOTOR VEHICLE COMPRISING A REINFORCED STRING
FR0400615A FR2859446B1 (en) 2003-09-09 2004-01-22 TRAVERSE FOR MOTOR VEHICLE COMPRISING A REINFORCED STRING.
PCT/FR2004/002292 WO2005025969A1 (en) 2003-09-09 2004-09-09 Cross member comprising a reinforced section for a motor vehicle

Publications (1)

Publication Number Publication Date
EP1663763A1 true EP1663763A1 (en) 2006-06-07

Family

ID=34196241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04787341A Withdrawn EP1663763A1 (en) 2003-09-09 2004-09-09 Cross member comprising a reinforced section for a motor vehicle

Country Status (3)

Country Link
EP (1) EP1663763A1 (en)
FR (1) FR2859446B1 (en)
WO (1) WO2005025969A1 (en)

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FR2898573B1 (en) * 2006-03-16 2008-06-20 Faurecia Interieur Ind Snc DASHBOARD TRAVERSE AT CAGE DE RAIDISSEMENT
US7374232B2 (en) * 2006-08-31 2008-05-20 Honda Motor Co., Ltd. Hanger beam assembly
PT103758B (en) 2007-06-06 2007-11-07 Sodecia Ct Tecnologico S A METHOD OF MANUFACTURING A DRIVEWAY FOR MOTOR VEHICLES AND THEIR TRAVEL
FR2952605B1 (en) 2009-11-13 2012-01-13 Faurecia Interieur Ind AUTOMOTIVE VEHICLE DASHBOARD STRUCTURE AND MOTOR VEHICLE COMPRISING SUCH A STRUCTURE
FR2957046B1 (en) 2010-03-05 2012-05-11 Faurecia Interieur Ind AUTOMOTIVE VEHICLE BOARD TRAVERSE.
EP3552929B1 (en) * 2018-04-13 2021-08-25 FCA Italy S.p.A. Motor vehicle provided with a support crosspiece, in particular for the support of a dashboard, and method for configuring a support crosspiece in different models of motor vehicle
DE102022208729A1 (en) * 2022-08-23 2024-02-29 Volkswagen Aktiengesellschaft Module cross member system, method for adjusting a natural frequency of a steering column and motor vehicle

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DE19605370C2 (en) * 1995-12-21 1998-08-27 Porsche Ag Vehicle body
DE29615364U1 (en) * 1996-09-04 1996-11-07 Delphi Automotive Systems Gmbh Motor vehicle body
DE29916470U1 (en) * 1999-09-18 1999-12-09 Benteler Werke Ag Instrument holder
DE20005471U1 (en) * 2000-03-23 2000-06-21 Benteler Werke Ag Instrument holder
DE10101927B4 (en) * 2001-01-16 2006-05-24 Wagon Automotive Gmbh Structural component of a motor vehicle body and method for producing such a structural component

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See references of WO2005025969A1 *

Also Published As

Publication number Publication date
WO2005025969A1 (en) 2005-03-24
WO2005025969B1 (en) 2005-06-02
FR2859446A1 (en) 2005-03-11
FR2859446B1 (en) 2007-09-07

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