WO2015090984A1 - Reinforced lightweight support for a dashboard cross-member - Google Patents

Reinforced lightweight support for a dashboard cross-member Download PDF

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Publication number
WO2015090984A1
WO2015090984A1 PCT/EP2014/076503 EP2014076503W WO2015090984A1 WO 2015090984 A1 WO2015090984 A1 WO 2015090984A1 EP 2014076503 W EP2014076503 W EP 2014076503W WO 2015090984 A1 WO2015090984 A1 WO 2015090984A1
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WO
WIPO (PCT)
Prior art keywords
wall
support
vehicle
edge
fixed
Prior art date
Application number
PCT/EP2014/076503
Other languages
French (fr)
Inventor
Jean Michel Appasamy
Eddy Pennerath
Original Assignee
Peugeot Citroen Automobiles Sa
Rehau 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, Rehau Sa filed Critical Peugeot Citroen Automobiles Sa
Publication of WO2015090984A1 publication Critical patent/WO2015090984A1/en

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Classifications

    • 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
    • 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

  • the invention relates to a dashboard cross support preferably positioned at one end of said dashboard cross member, and whose design allows for a lightweight and rigid piece.
  • the classic architecture of a dashboard of a motor vehicle has a cross on which are fixed the steering column, the dashboard and other equipment.
  • the dashboard cross member extends generally from one side of the vehicle to the other, substantially between the two front feet of the vehicle. It is attached to the vehicle structure by dashboard transom supports, also called side calipers.
  • the dashboard crossmember is generally made of a metal tube on which are placed various means of attaching equipment such as an air bag, a steering column, an air conditioning system ...
  • the cross board The dashboard is attached at both ends via the transom supports to the front foot, the front fender liner or the vehicle apron.
  • FIGS 1, 2 and 3 A support according to the prior art is shown in Figures 1, 2 and 3.
  • Said support (a) can be made by a folded sheet forming a U-section piece, so as to create two parallel flanges (b , c) interconnected by a plate (d) perpendicular to the two flanges (b, c).
  • the end of the cross member (e) dashboard is fixed by welding on the surface of one of the two flanges, which will be called flange (b) side cross, said surface being the one facing the opposite side to the second flange (c).
  • the dashboard cross member (e) formed of a tube is fixed so that the axis at the end of the tube forming said dashboard cross member (e) fixed to the support (a), is substantially perpendicular on the surface of the flange (b) side cross on which said cross member (e) dashboard is fixed.
  • a squareness reinforcement (f) made using a folded sheet forming a triangular square and consisting of two substantially parallel triangular walls substantially in the shape of a right triangle, and a third substantially rectangular wall connecting the two triangular walls between the two hypotenuses of each of the two triangular walls.
  • One edge of each square opposite each of the hypotenuses is fixed on the flange (b) side cross, the other edge opposite the hypotenuse is attached to the dashboard (e).
  • a sheet metal profile (g) is positioned between the two flanges, perpendicular to the two flanges (b, c), so as to increase the rigidity of the support (a).
  • the support (a) of the dashboard cross member (e) is fixed to the vehicle by the plate (d) disposed between the two flanges (b, c), said plate (d) being positioned in a plane containing the axes Y and Z of the vehicles, the Y axis being the transverse axis of the vehicle and the Z axis the vertical axis in the vehicle reference system.
  • the flanges (b, c) are in a plane parallel to the X and Z axes, the X axis being the longitudinal axis of the vehicle.
  • the flange (b) side cross member allows a maintenance of the dashboard cross member (e) along the X axis and the Z axis.
  • the squareness reinforcement (f) reinforces the connection between the cross member (e). dashboard and flange (b) crosshead side for X-axis forces.
  • the sheet metal profile (g) positioned between the two flanges (b, c) reinforces the rigidity of the crossbar support (a) dashboard along the Y axis by reinforcing the stiffness of the flanges (b, c). Such a support appears in FIG. 1 of patent FR2979886.
  • the object of the invention is to propose a new design of a lightened board cross support while being rigid in the X, Y and Z axes of the vehicle as defined above, when said support and said cross member are installed on the vehicle, and while decreasing the vibrations of said cross, including vibrations related to the rotation of the cross member in an axis substantially parallel to the Y axis. Another objective is to simplify the realization of the cross support.
  • a support intended to fix a cross member, in particular a dashboard cross member, to the structure of a vehicle comprising a soleplate intended to fix said support to said structure of the vehicle, characterized in that said support comprises at least two substantially flat walls, a first and a second wall, each connected to the sole by one of their respective edges, and each having at least one edge intended to be fixed to the cross member, the two walls extending both on the same side of the soleplate, and in that the first and second walls are interconnected by at least one edge of one of said walls, said edge being adjacent to the edge bonded to the soleplate.
  • This design of the support advantageously simplifies said support and minimize the amount of material used, so its mass.
  • the first and second walls each having at least non-parallel parts and connected to each other, said walls will be able to maintain each crosses in preferred directions to ensure the maintenance of said cross.
  • the fact that the edge of one of said walls is bonded to the other wall advantageously makes it possible to increase the rigidity of the support.
  • the support is lighter while remaining rigid.
  • the first and second walls extend on the same side of the sole so that the two walls can be attached to the cross.
  • the first wall and the second wall may be interconnected by a connection between one of the edges of one of the walls with the surface of the other wall, or by a connection between the edge of one of the walls and the edge of the other wall.
  • the connection may be a connection by welding or gluing, or any other known method of attachment.
  • the first wall and the second wall may also be made by a single folded part, the connection between the two walls being made by the continuity of material between the two walls at the fold zone.
  • the sole comprises means for attaching it to the vehicle structure or on an element which is fixed to the vehicle structure.
  • Said fastening means may be for example holes allowing the use of screw-nut systems to achieve said fixing, or any other means known to those skilled in the art.
  • a positioning will be chosen such that the first wall and the second wall are perpendicular to each other.
  • the two walls cooperate more effective and the rigidity of said support is advantageously improved, one of the walls reinforcing the other wall in the direction perpendicular to said other wall.
  • the support comprises at least a third wall facing the first wall, said third wall being connected to at least the second wall, and said third wall being intended to be fixed by the one of its edges at the cross.
  • the third wall extends on the same side of the sole as the first and second wall so as to be fixed by one of its edges to the cross.
  • said third wall being fixed to the second wall, itself connected to the first wall, the support thus formed by the sole and the three walls which are connected together in pairs, will advantageously have improved rigidity. Maintaining the cross member relative to the vehicle body will be improved.
  • said third wall may be bound by one of its edges to the sole so as to further increase the stiffness of the cross support.
  • the third wall comprises at least one planar portion preferably arranged so that the extension of said plane portion on the side of the edge of said third wall intended to be fixed to the crosspiece extends in a plane which intersects with forming at an acute angle the plane in which the first wall extends.
  • Said third wall may comprise another flat portion arranged to be perpendicular to the second wall, to further stiffen the bond between the walls.
  • the second wall and the third wall may be connected together by a connection between one of the edges of one of the walls with the surface of the other wall, or by a connection between the edge of one of the walls and the edge of the other wall.
  • the support comprises at least a fourth wall placed opposite the second wall, connected by one of its edges to the soleplate and connected at least to the first and third walls.
  • the fourth wall extends on the same side of the sole as the first, second and third walls.
  • the connection between the fourth wall and at least the first and third wall may be made between the edge of one of the walls and the surface of another wall, or between the edges of two walls.
  • the link can be by welding, nesting, folding of the same piece, or any other means known to those skilled in the art.
  • the fourth wall is connected to the first and third walls so as to form an open "box", whose bottom is formed by at least a portion of the sole and having at least four edges formed at least by the first, second third and fourth wall.
  • the rigidity of the support thus formed is particularly high while said support is light because manufactured with little material.
  • the cooperation of the walls between them allows to obtain a high rigidity of the support while decreasing the amount of material used, and therefore the mass of said support.
  • the fourth wall is flat and is arranged perpendicularly to the first wall.
  • the second wall is arranged so that it extends laterally relative to the sole, in a direction opposite to the fourth wall, while being on the same side as the first, third and fourth wall relative to the sole.
  • the fourth wall comprises a gripping zone adapted to receive a gripping means so as to allow the handling of the cross-support assembly, when the support is fixed on said cross-member, by a handling apparatus comprising said gripping means, such as a rectangular opening in said fourth wall.
  • This design uses components already present on the support to achieve the gripping zone adapted to receive the gripping means.
  • the design of the support is simplified and a minimum of material is used to achieve this area, minimizing the increase in mass associated with the establishment of said gripping area.
  • the gripping zone may be located on an extension of said fourth wall, tongue-shaped extension, comprising for example the rectangular-shaped opening for receiving the gripping means.
  • the third wall comprises at least one flat portion and one flat reinforcing tongue, the reinforcing tongue being disposed in a non-parallel plane to said flat portion, the third wall being bonded to the least by one of its edges to the fourth wall, on the face of said fourth wall facing the side of the second wall, said edge being composed at least in part by one of the edges of the flat portion and one of the edges of the tongue of reinforcement, so as to stiffen the said fourth wall.
  • the reinforcing tongue is positioned perpendicular to the fourth wall.
  • the connection between the edge of the third wall and the fourth wall can be achieved by any means known to those skilled in the art, such as welding, riveting or gluing.
  • This arrangement advantageously makes it possible to reinforce the rigidity of the fourth wall.
  • this configuration prevents said fourth wall from being deformed during the handling of the cross support assembly and passes, when said cross support is fixed to the cross member, by the handling device comprising cooperating gripping means. with the gripping area of the cross support.
  • the fourth wall has on at least a portion of one of its edges not connected to the sole and not connected to one of the other walls, at least one extension forming a fallen edge of in order to stiffen said fourth wall, in particular at the level of the gripping zone.
  • These fallen edges of the fourth wall advantageously enhance the rigidity of said fourth wall, in particular at the gripping zone when said fallen edges are positioned at said gripping zone.
  • This configuration avoids the deformations of the fourth wall during handling of the crossbar and cross support assembly, when said cross support is fixed to said crossbar, by a handling device comprising a gripping means cooperating with the gripping zone. located in said fourth wall.
  • the sole and at least one of the walls are made by folding a single sheet.
  • This design has the advantage of being particularly simple to achieve, minimizes the number of parts used to make the support so inexpensive, while ensuring a very good rigidity.
  • the sole, the first, the second and the fourth wall are made from a single sheet by folding, said walls being interconnected by one or more fastening means, for example by gluing, welding, riveting or interlocking or any other means known to those skilled in the art, and the third wall is an insert and attached to the second and fourth wall.
  • connection between the walls can be made by welding an edge of one of the walls to the wall or the edge of the adjacent wall, by riveting, gluing, interlocking or any other means of attachment known by the man of the job.
  • the realization of the third wall by an insert allows to extend the sole beyond the third wall, and to obtain a larger sole surface for better support on an element of the vehicle structure.
  • the sole comprises at least one plane portion on which is connected at least a portion of the first and / or second wall.
  • the fact of having a flat soleplate makes it easier to shape the support by folding.
  • the invention also relates to a dashboard structure comprising a cross member and at least one support according to the invention described above.
  • the dashboard structure comprises at least one support as described above and a dashboard crossmember, said support being attached to one end of said crossmember, and said end on which is fixed said support is in the form of a cylinder, whose axis will be called end axis, the first wall of the support extending in a plane substantially parallel to said end axis and the second wall s' extending in a plane forming an acute angle with said end axis so that the edge of the second wall attached to the cross-member is closer to the middle of the cross-member than the edge of said second wall connected to the sole, said middle of the crossbeam being the zone of the crossmember at equidistance between the two ends of said crossmember.
  • This configuration allows a particularly effective transmission of forces to the sole, particularly in the case where the dashboard structure is disposed in the vehicle so that the first wall is parallel to the horizontal plane of the vehicle, the horizontal plane of the vehicle. vehicle being the plane parallel to the longitudinal and transverse axis of the vehicle.
  • the forces passing through the support are essentially parallel to the longitudinal axis of the vehicle.
  • the first wall, reinforced against buckling, by its connection with the second wall and possibly its connection with the fourth wall, is very resistant to longitudinal forces.
  • the forces passing through the reinforcement and coming from the crossbar will essentially be directed parallel to the transverse axis of the vehicle.
  • the first wall will resist effectively against these lateral forces, reinforced by the connection with the second wall and possibly its connection with the fourth wall. It transmits said forces to the structure of the vehicle by minimizing the deformations.
  • the position of the second wall forming an angle less than 90 ° with respect to the end axis formed by the end of the cross member and connected at least to the first wall also allows a transfer of effective lateral forces towards the sole and the structure of the vehicle, the end axis being substantially parallel to the transverse axis of the vehicle.
  • said support comprises a third wall
  • said third wall provides a more rigid support of the cross-member vis-à-vis the movements of sleepers generating rotational movements of said cross member substantially the end axis of the crossbar.
  • the invention also relates to a vehicle comprising a cross member fixed to the vehicle structure by at least one support as described above.
  • the cross member may be a cross dashboard.
  • the support is fixed to a dashboard crossmember and to the vehicle structure, such that the first wall is substantially parallel to the horizontal plane in the reference frame of the vehicle, said plane horizontal being defined by the longitudinal axis X of said vehicle and the transverse axis Y of said vehicle, and the fourth wall of the support is disposed substantially parallel to a plane perpendicular to the axis Y.
  • the dashboard cross member is held in the vehicle structure at least by a cross-member support as described above, as well as by a crossbar support arm fixed on the one hand at the transom and secondly at the top of the apron before.
  • the top of the front apron may be an element of the vehicle structure disposed at the bottom of the windshield.
  • the support is preferably made of sheet metal, such as steel, aluminum or aluminum alloy. It can also be made of plastic or composite material. In the case of composite or plastic material, the piece can be made by molding, in one piece or several pieces. It may comprise metal inserts to allow its attachment by welding on the crosspiece when said support is made of plastic or composite material, and / or to enhance its rigidity.
  • Figures 1, 2 and 3 show different views of a cross support according to the prior art.
  • Fig. 3 is a view of such a support on which is fixed a cross dashboard.
  • Fig. 4 shows a cross support according to the invention, comprising a sole, four walls, and one of whose walls comprises a tongue with a gripping zone.
  • Fig. 5 is a view at a different angle of the support according to Figure 4.
  • FIG. 6 shows the cross support on which is fixed a cross dashboard.
  • Fig. 7 shows the cross support with a variant of the shape of one of the edges of the first wall of said support, according to the view of FIG. 6.
  • Fig. 8 shows the cross support in the same view as FIG. 5, with an indication of the position of weld seams for fixing the walls to each other as well as for fixing the cross member on said support.
  • Fig. 9 is a view showing a dashboard crossmember on which is fixed a support and a support arm for attachment to the vehicle structure element disposed at the bottom of the windshield.
  • the support 1 comprises a soleplate 10 on which are connected a first wall 11 and a second wall 12. Said walls 11 and 12 are interconnected.
  • one of the edges of the second wall is connected to the surface of the first wall, for example by welding or gluing, or by any other means for attaching a wall to another wall known to the skilled person.
  • the two walls 11 and 12 may be interconnected by their respective edge.
  • the two walls 11 and 12 can also be made from a sheet bending, the connection between said walls 11 and 12 then being made by continuity of material at the folded area. It is the same for the connection between the walls 11 and 12 and the sole 10. At least a portion of the edges of the walls 11 and 12, which are opposite the edges of said walls 11 and 12 connected to the sole, are intended to be attached to the dashboard crossbar 2 not shown in FIGS. 4 and 5.
  • the shape of the edge of the second wall 12 intended to be fixed on the crosspiece at least partially follows the shape of said cross member 2 so as to allow attachment of said edge on the surface of said crosspiece 2.
  • the second wall 12 is positioned in a plane substantially perpendicular to the plane defined by the first wall 11.
  • the support 1 further comprises a third wall 13 disposed facing the first wall 11. At least one of the edges of said third wall 13 is connected to the second wall 12 and another of the edges of said third wall 13 is intended to be fixed to the cross member 2.
  • This third wall 13 reinforces the connection between the cross member 2 and the support 1, improve the rigidity of the second wall 12 and the rigidity of the support 1.
  • the third wall 13 is not connected to the sole 10.
  • one of the edges of said third wall 13 may be re connected to said sole 10.
  • the support 1 also has a fourth wall 14 facing the third wall 13.
  • the fourth wall 14 is connected by one of its edges to the sole 10.
  • the first wall 11 and the third wall 13 are connected to said fourth wall 14.
  • This connection can be made by the edge of one of the walls 13 or 14 in contact with the surface of the other wall, or edge to edge.
  • the connection can be made by any means known to those skilled in the art to maintain a wall to another, such as for example by welding, gluing, or by folding a plate or by interlocking.
  • the third wall 13 is formed of at least one plane portion 131.
  • the third wall 13 may also comprise a second flat portion extending from the second wall 12 to the fourth wall 14, the flat portion being perpendicular to said second wall 12 as well as to said fourth wall 14.
  • the third wall 13 also comprises a reinforcing tongue 132 preferably flat, having an edge connected to the fourth wall 14.
  • the edge of the third wall 13 connected to the surface of the fourth wall 14 forms a broken line, of which at least one first segment is formed by one of the edges of the flat portion 131 and at least one second segment is formed by one of the edges of the reinforcing tongue 132.
  • the tongue of reinforcement 132 is arranged to form an angle with the flat portion 131 of said wall 13. This reinforcement tongue 132 stiffens the fourth wall 14.
  • the soleplate 10 is substantially flat, and the reinforcement tongue 132 is substantially parallel to the plane defined by the flange 10, and the second flat portion of the third wall 13 is substantially perpendicular to said flange 10.
  • the fourth wall 14 further comprises a gripping tab 141 extending away from the flange 10.
  • Said gripping tab 141 comprises a gripping area 142 in the form of a gripping hole.
  • This gripping zone 142 is intended to allow the handling of a structure composed of at least one support dashboard cross member 1 attached to a dashboard cross member 2, using a handling device, said handling apparatus comprising a gripping means cooperating with the gripping area.
  • the reinforcement tongue 132 of the third wall 13 is connected by one of its edges to the fourth wall 14 at the level of said gripping tongue 141 so as to stiffen said gripping tongue 141.
  • said tongue gripping members 141 On the edges of said tongue gripping members 141 are provided with reinforced flanged edges 143, bent substantially at 90 ° with respect to the surface of the gripping tab 141, so as to stiffen said gripping tab 141. These flanged edges 143 are preferentially arranged at the level of the gripping zone 142 so as to stiffen the gripping tab 141 at said gripping area 142. Other means for the cooperation of a gripping means with the gripping area 142 may be provided. During handling, the rigidity of the gripping zone 142 is ensured in different directions by virtue of the reinforced reinforcement edges 143 and the connection with the third wall 13. In FIG. 4, the fourth wall 14 has a T-shape, the horizontal leg of the T being connected to the sole 10 and the vertical leg of the T having the gripping zone 142 at the end opposite to the horizontal leg.
  • the sole 10 may be flat, as shown in Figs. 4 and 5, or be of more complex shape, such as for example having edges that have fallen around its periphery, and on which the walls 11, 12, 13 and 14 are connected, or some of these walls.
  • the first wall 11, the second wall 12 and the fourth wall 14 are made by folding a metal sheet.
  • the first wall 11 and the second wall 12, and the first wall 11 and the fourth wall 14 are interconnected by welding an edge of one of the walls on the surface of the other wall.
  • the third wall 13 is an add-on part, one edge of which is welded to the second wall 12 and another edge to the fourth wall 14.
  • the embodiment of the support of the dashboard transom support 1 thus consists solely of 2 folded and fixed parts. between them.
  • the third wall could also be obtained by folding a part of the plate from which are formed the sole 10, the first wall 11, the second wall 12 and the fourth wall 14.
  • the support 1 would then be made of a single piece folded.
  • the soleplate 10 comprises means allowing the establishment of fastening means adapted to fix said flange 10 to the vehicle structure.
  • the sole 10 has holes for the passage of fixing screws.
  • FIG. 6 shows a support 1 on which is fixed a dashboard cross 2.
  • FIG. 6 shows only the end of the cross member 2.
  • the end of the cross member 2 is substantially cylindrical in shape, the axis of the cylinder forms the end axis 3.
  • the cross member 2 is fixed on an edge of the first wall 10, an edge of the second wall 12 and an edge of the third wall 13.
  • the first wall 11 and the flat portion 131 of the third wall 13 are arranged substantially parallel to the end axis 3.
  • the fourth wall 14 is disposed substantially perpendicular to the end axis 3.
  • the second wall 12 extends obliquely with respect to the sole 10 and is perpendicular to the first wall 11.
  • said second wall 12 is arranged to make an angle with the end axis 3, so that the edge of the second wall 12 which is fixed to the soleplate 10 is further from the middle of the crossbar 2 than the edge of the said second wall 12 which is connected to said cross member 2, said mid place of the crossbeam 2 being the zone of the crossbeam 2 equidistant between the two ends of said crossbeam 2, the second wall 12 being also perpendicular to the first wall 11.
  • the edge of the end of the crosspiece 2 has a dropped edge 21 facing the inside of said crosspiece 2.
  • This fallen edge 21 makes it possible to stiffen the end of the crosspiece 2 against efforts tending to deform the section of said end
  • This falling edge 21 may be made by deforming the end of the crosspiece at the moment of its shaping, or by adding a washer-shaped piece adapted to the cross-section of the end of the crosspiece. crossbar 2, and which is fixed to the edge of the end of the crossbar 2.
  • Fig. 7 shows a variant of the shape of the first wall 11 in which the edge of said first wall 11 fixed to the crosspiece 2 is extended forward of the end of said cross member 2 by an outgrowth 110 extending in front of said end of the 2.
  • This protrusion 110 limits the displacements of the cross member 2 along the end axis 3 in the direction of the fourth wall 14.
  • the end axis 3 is disposed transversely to the vehicle.
  • the protrusion 110 limits the displacement of the crossmember 2 under the force of said lateral impact.
  • the support 1 is attached to the cross member 2, forming a dashboard structure, so that once said dashboard structure mounted on the vehicle structure, the cross support 1 is arranged such that the first wall 11 is substantially parallel to the horizontal plane of the vehicle, defined by a longitudinal axis X and transverse Y of the vehicle, the sole 10 is disposed in a vertical plane defined by the Y axis and a vertical axis Z of the vehicle, and the fourth wall 14 is parallel to another vertical plane defined by the X axis and the Z axis of the vehicle.
  • Fig. 9 shows a dashboard transom structure comprising a dashboard cross member 2 fixed by at least one of its ends to a support 1, a support arm 5 of the cross member 2 being fixed on the one hand to the cross member 2 and on the other hand being intended to be fixed in the upper part of the front apron, such as for example on a structural element of the vehicle disposed along the bottom of the windshield.
  • This support arm 5 is disposed substantially at the fastening on the crossbar 2 of the steering column to ensure effective maintenance of said steering column, especially in case of impact.
  • By making a support 1 rigid cross 2 it becomes possible to remove the reinforcements usually positioned substantially vertical between the cross member 2 and a vehicle floor element.
  • the fixing by the support 1 at each end of the crossbar 2 and the establishment of the support arm 5 is sufficient to maintain the cross 2 rigidly.

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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 support (1) intended to secure a cross-member, in particular a dashboard cross-member, to the structure of a vehicle. The support comprises a base plate (10) intended to secure the support (1) to the structure of the vehicle, characterised in that: the support (1) comprises at least two substantially planar walls, a first wall (11) and a second wall (12), each connected to the base plate (10) on one of the edges thereof, and each having at least one edge intended to be secured to the cross-member, both of said walls extending on the same side of the base plate (10); and the first wall (11) and the second wall (12) are interconnected by at least one edge of one of the walls (11, 12), said edge being adjacent to the edge connected to the base plate (10).

Description

SUPPORT RENFORCE ET ALLEGE DE TRAVERSE DE PLANCHE DE BORD  REINFORCED SUPPORT AND ALLOY FOR DRIVING BOARD TRAVERSE
L'invention concerne un support de traverse de planche de bord se positionnant de manière préférentielle à l'une des extrémités de ladite traverse de planche de bord, et dont la conception permet de réaliser une pièce légère et rigide. The invention relates to a dashboard cross support preferably positioned at one end of said dashboard cross member, and whose design allows for a lightweight and rigid piece.
L'architecture classique d'une planche de bord d'un véhicule automobile comporte une traverse sur laquelle sont fixés la colonne de direction, la planche de bord et d'autres équipements. La traverse de planche de bord s'étend généralement d'un côté du véhicule à l'autre, sensiblement entre les deux pieds avant du véhicule. Elle est fixée à la structure du véhicule par des supports de traverse de planche de bord, encore appelés étriers latéraux. La traverse de planche de bord est généralement constituée d'un tube métallique sur lequel sont placés différents moyens de fixation d'équipements tels qu'un sac gonflable de sécurité, une colonne de direction, un système de climatisation... La traverse de planche de bord est fixée à ses deux extrémités par l'intermédiaire des supports de traverse au pied avant, à la doublure d'aile avant ou au tablier du véhicule. Ces supports doivent être suffisamment rigides et solides pour maintenir la traverse de planche de bord équipée de la planche de bord et des autres équipements se fixant dessus, pour limiter les vibrations de ladite traverse, notamment les vibrations selon une rotation sensiblement autour de l'axe transversal du véhicule, et pour faire transiter les efforts entre la traverse et la structure du véhicule en cas de choc. Un support selon l'état de la technique est représenté dans les figures 1, 2 et 3. Ledit support (a) peut être réalisé par une tôle pliée, formant une pièce de section en U, de manière à créer deux flasques parallèles (b, c) reliées entre elles par une platine (d) perpendiculaire aux deux flasques (b, c). L'extrémité de la traverse (e) de planche de bord est fixée par soudage sur la surface de l'un des deux flasques, que l'on appellera flasque (b) côté traverse, ladite surface étant celle orientée du côté opposé à le deuxième flasque (c). La traverse (e) de planche de bord formée d'un tube est fixée de manière à ce que l'axe à l'extrémité du tube formant ladite traverse (e) de planche de bord fixé au support (a), soit sensiblement perpendiculaire à la surface du flasque (b) coté traverse sur laquelle ladite traverse (e) de planche de bord est fixée. Afin de renforcer cette liaison entre la traverse (e) de planche de bord et le support (a), un renfort d'équerrage (f), réalisé à l'aide d'une tôle pliée formant une équerre triangulaire et constituée de deux parois triangulaires sensiblement parallèles et sensiblement en forme de triangle rectangle, et d'une troisième paroi sensiblement rectangulaire reliant les deux parois triangulaires entre les deux hypoténuses de chacune des deux parois triangulaires. L'un des bords de chaque équerre opposée à chacune des hypoténuses est fixé sur le flasque (b) côté traverse, l'autre bord opposé à l'hypoténuse est fixé à la traverse (e) de planche de bord. Un profilé de tôle (g) est positionné entre les deux flasques, perpendiculairement aux deux flasques (b, c), de manière à augmenter la rigidité du support (a). Le support (a) de la traverse (e) de planche de bord est fixée sur le véhicule par la platine (d) disposée entre les deux flasques (b, c), ladite platine (d) étant positionnée dans un plan contenant les axes Y et Z du véhicules, l'axe Y étant l'axe transversal du véhicule et l'axe Z l'axe vertical dans le référentiel du véhicule. Les flasques (b, c) sont suivant un plan parallèle aux axes X et Z, l'axe X étant l'axe longitudinal du véhicule. Le flasque (b) côté traverse permet un maintien de la traverse (e) de planche de bord suivant l'axe X et l'axe Z. Le renfort d'équerrage (f) vient renforcer la liaison entre la traverse (e) de planche de bord et le flasque (b) côté traverse pour les efforts suivant l'axe X. Le profilé de tôle (g) positionné entre les deux flasques (b, c) renforce la rigidité du support (a) de traverse (e) de planche de bord suivant l'axe Y en renforçant la rigidité des flasques (b, c). Un tel support apparaît dans la figure 1 du brevet FR2979886. The classic architecture of a dashboard of a motor vehicle has a cross on which are fixed the steering column, the dashboard and other equipment. The dashboard cross member extends generally from one side of the vehicle to the other, substantially between the two front feet of the vehicle. It is attached to the vehicle structure by dashboard transom supports, also called side calipers. The dashboard crossmember is generally made of a metal tube on which are placed various means of attaching equipment such as an air bag, a steering column, an air conditioning system ... The cross board The dashboard is attached at both ends via the transom supports to the front foot, the front fender liner or the vehicle apron. These supports must be sufficiently rigid and solid to maintain the dashboard crossmember equipped with the dashboard and other equipment attached thereto, to limit the vibrations of said crossmember, including vibration in a substantially rotation about the axis transverse of the vehicle, and for passing the forces between the cross member and the vehicle structure in the event of impact. A support according to the prior art is shown in Figures 1, 2 and 3. Said support (a) can be made by a folded sheet forming a U-section piece, so as to create two parallel flanges (b , c) interconnected by a plate (d) perpendicular to the two flanges (b, c). The end of the cross member (e) dashboard is fixed by welding on the surface of one of the two flanges, which will be called flange (b) side cross, said surface being the one facing the opposite side to the second flange (c). The dashboard cross member (e) formed of a tube is fixed so that the axis at the end of the tube forming said dashboard cross member (e) fixed to the support (a), is substantially perpendicular on the surface of the flange (b) side cross on which said cross member (e) dashboard is fixed. In order to reinforce this connection between the dashboard cross member (e) and the support (a), a squareness reinforcement (f), made using a folded sheet forming a triangular square and consisting of two substantially parallel triangular walls substantially in the shape of a right triangle, and a third substantially rectangular wall connecting the two triangular walls between the two hypotenuses of each of the two triangular walls. One edge of each square opposite each of the hypotenuses is fixed on the flange (b) side cross, the other edge opposite the hypotenuse is attached to the dashboard (e). A sheet metal profile (g) is positioned between the two flanges, perpendicular to the two flanges (b, c), so as to increase the rigidity of the support (a). The support (a) of the dashboard cross member (e) is fixed to the vehicle by the plate (d) disposed between the two flanges (b, c), said plate (d) being positioned in a plane containing the axes Y and Z of the vehicles, the Y axis being the transverse axis of the vehicle and the Z axis the vertical axis in the vehicle reference system. The flanges (b, c) are in a plane parallel to the X and Z axes, the X axis being the longitudinal axis of the vehicle. The flange (b) side cross member allows a maintenance of the dashboard cross member (e) along the X axis and the Z axis. The squareness reinforcement (f) reinforces the connection between the cross member (e). dashboard and flange (b) crosshead side for X-axis forces. The sheet metal profile (g) positioned between the two flanges (b, c) reinforces the rigidity of the crossbar support (a) dashboard along the Y axis by reinforcing the stiffness of the flanges (b, c). Such a support appears in FIG. 1 of patent FR2979886.
Si cette conception du support de planche de bord donne de bons résultats en termes de rigidité, elle nécessite cependant l'utilisation de beaucoup de matière, alourdissant le support. De plus, si la rigidité du support de planche de bord est suffisante lorsque la traverse est soutenue dans sa zone milieu par une liaison verticale avec le plancher du véhicule, appelée jambe de force, la suppression de cette jambe de force nécessite de renforcer ledit support de planche de bord, notamment afin de minimiser les vibrations de la traverse de planche de bord. Ce renforcement générera de la masse en plus qui alourdira encore le véhicule. Although this design of the dashboard support gives good results in terms of rigidity, it nevertheless requires the use of a lot of material, weighing down the support. In addition, if the rigidity of the dashboard support is sufficient when the cross member is supported in its middle zone by a vertical connection with the floor of the vehicle, called strut, the removal of this strut requires reinforcing said support dashboard, especially to minimize the vibrations of the dashboard crossmember. This reinforcement will generate more mass that will weigh down the vehicle.
L'objectif de l'invention est de proposer une nouvelle conception d'un support de traverse de planche allégé tout en étant rigide dans les axes X, Y et Z du véhicule tel que définis précédemment, lorsque ledit support et ladite traverse sont installés sur le véhicule, et tout en diminuant les vibrations de ladite traverse, notamment les vibrations liées à la rotation de la traverse dans un axe sensiblement parallèle à l'axe Y. Un autre objectif est de simplifier la réalisation du support de traverse. The object of the invention is to propose a new design of a lightened board cross support while being rigid in the X, Y and Z axes of the vehicle as defined above, when said support and said cross member are installed on the vehicle, and while decreasing the vibrations of said cross, including vibrations related to the rotation of the cross member in an axis substantially parallel to the Y axis. Another objective is to simplify the realization of the cross support.
Ce but est atteint selon l'invention grâce à un support destiné à fixer une traverse, notamment une traverse de planche de bord, à la structure d'un véhicule, comportant une semelle destinée à fixer ledit support à ladite structure du véhicule, caractérisé en ce que ledit support comporte au moins deux parois sensiblement planes, une première et une deuxième parois, reliées chacune à la semelle par un de leur bord respectif, et ayant chacune au moins un bord destiné à être fixé à la traverse, les deux parois s'étendant toutes les deux du même côté de la semelle, et en ce que la première et la deuxième paroi sont reliées entre elles par au moins un bord de l'une desdites parois, ledit bord étant adjacent au bord lié à la semelle. Cette conception du support permet avantageusement de simplifier ledit support et de minimiser la quantité de matière utilisée, donc sa masse. La première et la deuxième paroi comportant chacune au moins des parties non-parallèles entre-elles et étant reliées entre elles, lesdites parois vont pouvoir maintenir chacune la traverse dans des directions privilégiées pour assurer le maintien de ladite traverse. Le fait que le bord de l'une desdites parois soit lié à l'autre paroi permet avantageusement d'augmenter la rigidité du support. Le support est plus léger tout en restant rigide. This object is achieved according to the invention by means of a support intended to fix a cross member, in particular a dashboard cross member, to the structure of a vehicle, comprising a soleplate intended to fix said support to said structure of the vehicle, characterized in that said support comprises at least two substantially flat walls, a first and a second wall, each connected to the sole by one of their respective edges, and each having at least one edge intended to be fixed to the cross member, the two walls extending both on the same side of the soleplate, and in that the first and second walls are interconnected by at least one edge of one of said walls, said edge being adjacent to the edge bonded to the soleplate. This design of the support advantageously simplifies said support and minimize the amount of material used, so its mass. The first and second walls each having at least non-parallel parts and connected to each other, said walls will be able to maintain each crosses in preferred directions to ensure the maintenance of said cross. The fact that the edge of one of said walls is bonded to the other wall advantageously makes it possible to increase the rigidity of the support. The support is lighter while remaining rigid.
La première et la deuxième paroi s'étendent du même côté de la semelle afin que les deux parois puissent être fixées à la traverse. La première paroi et la deuxième paroi peuvent être reliées entre elles par une liaison entre l'un des bords de l'une des parois avec la surface de l'autre paroi, ou par une liaison entre le bord d'une des parois et le bord de l'autre paroi. La liaison peut être une liaison par soudage ou collage, ou tout autre mode de fixation connu. La première paroi et la deuxième paroi peuvent être aussi réalisées par une seule pièce pliée, la liaison entre les deux parois étant réalisée par la continuité de matière entre les deux parois au niveau de la zone de pliage. The first and second walls extend on the same side of the sole so that the two walls can be attached to the cross. The first wall and the second wall may be interconnected by a connection between one of the edges of one of the walls with the surface of the other wall, or by a connection between the edge of one of the walls and the edge of the other wall. The connection may be a connection by welding or gluing, or any other known method of attachment. The first wall and the second wall may also be made by a single folded part, the connection between the two walls being made by the continuity of material between the two walls at the fold zone.
La semelle comporte des moyens permettant sa fixation à la structure du véhicule ou sur un élément se fixant à la structure du véhicule. Lesdits moyens de fixation peuvent être par exemple des trous permettant l'utilisation de systèmes vis-écrou pour réaliser ladite fixation, ou tout autre moyen connu de l'homme du métier. De préférence, on choisira un positionnement tel que la première paroi et la deuxième paroi soient perpendiculaire entre elles. Ainsi, les deux parois coopèrent de manière plus efficace et la rigidité dudit support est avantageusement améliorée, l'une des parois venant renforcer l'autre paroi dans la direction perpendiculaire à ladite autre paroi. The sole comprises means for attaching it to the vehicle structure or on an element which is fixed to the vehicle structure. Said fastening means may be for example holes allowing the use of screw-nut systems to achieve said fixing, or any other means known to those skilled in the art. Preferably, a positioning will be chosen such that the first wall and the second wall are perpendicular to each other. Thus, the two walls cooperate more effective and the rigidity of said support is advantageously improved, one of the walls reinforcing the other wall in the direction perpendicular to said other wall.
Dans un mode de réalisation préféré de l'invention, le support comporte au moins une troisième paroi en regard de la première paroi, ladite troisième paroi étant reliée au moins à la deuxième paroi, et ladite troisième paroi étant destinée à être fixée par l'un de ses bords à la traverse. In a preferred embodiment of the invention, the support comprises at least a third wall facing the first wall, said third wall being connected to at least the second wall, and said third wall being intended to be fixed by the one of its edges at the cross.
La troisième paroi s'étend du même côté de la semelle que la première et la deuxième paroi afin de pouvoir être fixée par l'un de ses bords à la traverse. The third wall extends on the same side of the sole as the first and second wall so as to be fixed by one of its edges to the cross.
Lors de certains mouvements de la traverse, des efforts sont transmis à la troisième paroi. Ladite troisième paroi étant fixée à la deuxième paroi, elle-même reliée à la première paroi, le support ainsi formé par la semelle et les trois parois qui sont reliées entre elles deux à deux, va avantageusement avoir une rigidité améliorée. Le maintien de la traverse par rapport à la caisse du véhicule sera amélioré. En variante, ladite troisième paroi peut être liée par un de ses bords à la semelle de manière à augmenter encore la rigidité du support de traverse. During certain movements of the cross, efforts are transmitted to the third wall. Said third wall being fixed to the second wall, itself connected to the first wall, the support thus formed by the sole and the three walls which are connected together in pairs, will advantageously have improved rigidity. Maintaining the cross member relative to the vehicle body will be improved. Alternatively, said third wall may be bound by one of its edges to the sole so as to further increase the stiffness of the cross support.
De préférence, la troisième paroi comporte au moins une partie plane disposée de préférence de manière à ce que le prolongement de ladite partie plane du côté du bord de ladite troisième paroi destiné à être fixé à la traverse s'étende dans un plan qui croise en formant un angle aigu le plan dans lequel s'étend la première paroi. Ladite troisième paroi peut comporter une autre partie plane disposée de manière à être perpendiculaire à la deuxième paroi, afin de rigidifier d'avantage le lien entre les parois. Preferably, the third wall comprises at least one planar portion preferably arranged so that the extension of said plane portion on the side of the edge of said third wall intended to be fixed to the crosspiece extends in a plane which intersects with forming at an acute angle the plane in which the first wall extends. Said third wall may comprise another flat portion arranged to be perpendicular to the second wall, to further stiffen the bond between the walls.
La deuxième paroi et la troisième paroi peuvent être reliées entre elles par une liaison entre l'un des bords de l'une des parois avec la surface de l'autre paroi, ou par une liaison entre le bord d'une des parois et le bord de l'autre paroi. Dans un mode préféré de l'invention, le support comporte au moins une quatrième paroi placée en regard de la deuxième paroi, reliée par un de ses bords à la semelle et reliée au moins à la première et à la troisième paroi. La quatrième paroi s'étend du même côté de la semelle que les première, deuxième et troisième parois. La liaison entre la quatrième paroi et au moins la première et la troisième paroi peut être réalisée entre le bord de l'une des parois et la surface d'une autre paroi, ou entre les bords de deux parois. La liaison peut être par soudure, emboîtement, pliage d'une même pièce, ou tout autre moyen connu de l'homme du métier. La quatrième paroi est reliée à la première et à la troisième paroi de manière à former une « boîte » ouverte, dont le fond est réalisé par au moins une partie de la semelle et comportant au moins quatre bords formés au moins par la première, deuxième, troisième et quatrième paroi. Avantageusement, la rigidité du support ainsi formé est particulièrement élevée alors que ledit support est léger car fabriqué avec peu de matière. En effet, la coopération des parois entre elles permet d'obtenir une grande rigidité du support tout en diminuant la quantité de matière utilisée, et donc la masse dudit support. De préférence, la quatrième paroi est plane et est disposée perpendiculairement à la première paroi. The second wall and the third wall may be connected together by a connection between one of the edges of one of the walls with the surface of the other wall, or by a connection between the edge of one of the walls and the edge of the other wall. In a preferred embodiment of the invention, the support comprises at least a fourth wall placed opposite the second wall, connected by one of its edges to the soleplate and connected at least to the first and third walls. The fourth wall extends on the same side of the sole as the first, second and third walls. The connection between the fourth wall and at least the first and third wall may be made between the edge of one of the walls and the surface of another wall, or between the edges of two walls. The link can be by welding, nesting, folding of the same piece, or any other means known to those skilled in the art. The fourth wall is connected to the first and third walls so as to form an open "box", whose bottom is formed by at least a portion of the sole and having at least four edges formed at least by the first, second third and fourth wall. Advantageously, the rigidity of the support thus formed is particularly high while said support is light because manufactured with little material. Indeed, the cooperation of the walls between them allows to obtain a high rigidity of the support while decreasing the amount of material used, and therefore the mass of said support. Preferably, the fourth wall is flat and is arranged perpendicularly to the first wall.
De préférence, la deuxième paroi est disposée de manière à ce qu'elle s'étende latéralement par rapport à la semelle, en direction opposée à la quatrième paroi, tout en étant du même côté que la première, troisième et quatrième paroi par rapport à la semelle. Preferably, the second wall is arranged so that it extends laterally relative to the sole, in a direction opposite to the fourth wall, while being on the same side as the first, third and fourth wall relative to the sole.
Dans un autre mode préféré de réalisation de l'invention, la quatrième paroi comporte une zone de préhension apte à recevoir un moyen de préhension afin de permettre la manutention de l'ensemble traverse-support, lorsque le support est fixé sur ladite traverse, par un appareil de manutention comportant ledit moyen de préhension, tel qu'une ouverture de forme rectangulaire dans ladite quatrième paroi. In another preferred embodiment of the invention, the fourth wall comprises a gripping zone adapted to receive a gripping means so as to allow the handling of the cross-support assembly, when the support is fixed on said cross-member, by a handling apparatus comprising said gripping means, such as a rectangular opening in said fourth wall.
Cette conception utilise des composants déjà présents sur le support pour réaliser la zone de préhension apte à recevoir le moyen de préhension. La conception du support est simplifiée et un minimum de matière est utilisé pour réaliser cette zone, minimisant l'augmentation de la masse liée à la mise en place de ladite zone de préhension. La zone de préhension peut être située sur une extension de ladite quatrième paroi, extension en forme de languette, comprenant par exemple l'ouverture de forme rectangulaire destinée à recevoir le moyen de préhension. This design uses components already present on the support to achieve the gripping zone adapted to receive the gripping means. The design of the support is simplified and a minimum of material is used to achieve this area, minimizing the increase in mass associated with the establishment of said gripping area. The gripping zone may be located on an extension of said fourth wall, tongue-shaped extension, comprising for example the rectangular-shaped opening for receiving the gripping means.
Dans un autre mode de réalisation de l'invention, la troisième paroi comporte au moins une partie plane et une languette de renfort plane, la languette de renfort étant disposée suivant un plan non-parallèle à ladite partie plane, la troisième paroi étant lié au moins par un de ses bords à la quatrième paroi, sur la face de ladite quatrième paroi orientée du côté de la deuxième paroi, ledit bord étant composé au moins en partie par un des bords de la partie plane et un des bords de la languette de renfort, de manière à rigidifier ladite quatrième paroi. De préférence la languette de renfort est positionnée perpendiculairement à la quatrième paroi. La liaison entre le bord de la troisième paroi et la quatrième paroi peut être réalisée par tout moyen connu par l'homme du métier, comme par exemple par soudage, rivetage ou par collage. Cette disposition permet avantageusement de renforcer la rigidité de la quatrième paroi. En particulier, cette configuration évite à ladite quatrième paroi de se déformer lors de la manutention de l'ensemble support de traverse et traverse, lorsque ledit support de traverse est fixé à la traverse, par l'appareil de manutention comportant des moyens de préhension coopérant avec la zone de préhension du support de traverse. Dans un mode de réalisation de l'invention, la quatrième paroi comporte sur au moins une partie d'un de ses bords non reliés à la semelle et non reliés à l'une des autres parois, au moins une extension formant un bord tombé de manière à rigidifier ladite quatrième paroi, en particulier au niveau de la zone de préhension. Ces bords tombés de la quatrième paroi permettent de renforcer avantageusement la rigidité de ladite quatrième paroi, en particulier au niveau de la zone de préhension lorsque lesdits bords tombés sont positionnés au niveau de ladite zone de préhension. Cette configuration évite les déformations de la quatrième paroi lors de la manutention de l'ensemble traverse et support de traverse, lorsque ledit support de traverse est fixé à ladite traverse, par un appareil de manutention comportant un moyen de préhension coopérant avec la zone de préhension situé dans ladite quatrième paroi. In another embodiment of the invention, the third wall comprises at least one flat portion and one flat reinforcing tongue, the reinforcing tongue being disposed in a non-parallel plane to said flat portion, the third wall being bonded to the least by one of its edges to the fourth wall, on the face of said fourth wall facing the side of the second wall, said edge being composed at least in part by one of the edges of the flat portion and one of the edges of the tongue of reinforcement, so as to stiffen the said fourth wall. Preferably the reinforcing tongue is positioned perpendicular to the fourth wall. The connection between the edge of the third wall and the fourth wall can be achieved by any means known to those skilled in the art, such as welding, riveting or gluing. This arrangement advantageously makes it possible to reinforce the rigidity of the fourth wall. In particular, this configuration prevents said fourth wall from being deformed during the handling of the cross support assembly and passes, when said cross support is fixed to the cross member, by the handling device comprising cooperating gripping means. with the gripping area of the cross support. In one embodiment of the invention, the fourth wall has on at least a portion of one of its edges not connected to the sole and not connected to one of the other walls, at least one extension forming a fallen edge of in order to stiffen said fourth wall, in particular at the level of the gripping zone. These fallen edges of the fourth wall advantageously enhance the rigidity of said fourth wall, in particular at the gripping zone when said fallen edges are positioned at said gripping zone. This configuration avoids the deformations of the fourth wall during handling of the crossbar and cross support assembly, when said cross support is fixed to said crossbar, by a handling device comprising a gripping means cooperating with the gripping zone. located in said fourth wall.
Dans un mode de réalisation de l'invention, au moins une partie de la semelle et au moins l'une des parois sont réalisées par pliage d'une unique tôle. Cette conception a l'avantage d'être particulièrement simple à réaliser, minimise le nombre de pièces utilisées pour faire le support donc peu coûteuse, tout en garantissant une très bonne rigidité. De préférence, la semelle, la première, la deuxième et la quatrième paroi sont réalisées à partir d'une seule tôle par pliage, les dites parois étant reliées entre elles par un ou plusieurs moyens de fixation, comme par exemple par collage, soudage, rivetage ou emboîtement ou tout autre moyen connu de l'homme du métier, et la troisième paroi est une pièce rapportée et fixée à la deuxième et quatrième paroi. Les liaisons entre les parois peuvent être réalisées par soudage d'un bord d'une des parois sur la paroi ou le bord de la paroi adjacente, par rivetage, collage, emboîtement ou tout autre moyen de fixation connu par l'homme du métier. La réalisation de la troisième paroi par une pièce rapportée permet d'étendre la semelle au-delà de la troisième paroi, et d'obtenir une surface de semelle plus grande permettant un meilleur maintien sur un élément de la structure du véhicule. De préférence, la semelle comporte au moins une partie plane sur laquelle est reliée au moins une partie de la première et/ou de la deuxième paroi. Le fait d'avoir une semelle plane permet une mise en forme plus facile du support par pliage. In one embodiment of the invention, at least a portion of the sole and at least one of the walls are made by folding a single sheet. This design has the advantage of being particularly simple to achieve, minimizes the number of parts used to make the support so inexpensive, while ensuring a very good rigidity. Preferably, the sole, the first, the second and the fourth wall are made from a single sheet by folding, said walls being interconnected by one or more fastening means, for example by gluing, welding, riveting or interlocking or any other means known to those skilled in the art, and the third wall is an insert and attached to the second and fourth wall. The connections between the walls can be made by welding an edge of one of the walls to the wall or the edge of the adjacent wall, by riveting, gluing, interlocking or any other means of attachment known by the man of the job. The realization of the third wall by an insert allows to extend the sole beyond the third wall, and to obtain a larger sole surface for better support on an element of the vehicle structure. Preferably, the sole comprises at least one plane portion on which is connected at least a portion of the first and / or second wall. The fact of having a flat soleplate makes it easier to shape the support by folding.
L'invention porte aussi sur une structure de planche de bord comportant une traverse et au moins un support suivant l'invention décrite précédemment. The invention also relates to a dashboard structure comprising a cross member and at least one support according to the invention described above.
Dans un mode de réalisation de l'invention, la structure de planche de bord comporte au moins un support tel que décrit précédemment et une traverse de planche de bord, ledit support étant fixé à l'une des extrémités de ladite traverse, et ladite extrémité sur laquelle est fixé ledit support est sous la forme d'un cylindre, dont l'axe sera nommé axe d'extrémité, la première paroi du support s'étendant dans un plan sensiblement parallèle audit axe d'extrémité et la deuxième paroi s'étendant dans un plan formant un angle aigu avec ledit axe d'extrémité de manière à ce que le bord de la deuxième paroi fixé à la traverse soit plus proche du milieu de la traverse que le bord de ladite deuxième paroi liée à la semelle, ledit milieu de la traverse étant la zone de la traverse à équidistance entre les deux extrémités de ladite traverse. Cette configuration permet une transmission des efforts particulièrement efficace vers la semelle, en particulier dans le cas où la structure de planche de bord est disposée dans le véhicule de manière à ce que la première paroi soit parallèle au plan horizontal du véhicule, le plan horizontal du véhicule étant le plan parallèle à l'axe longitudinal et transversal du véhicule. En cas de choc avant, les efforts transitant par le support sont essentiellement parallèles à l'axe longitudinal du véhicule. La première paroi, renforcée contre le flambage, par sa liaison avec la deuxième paroi et éventuellement sa liaison avec la quatrième paroi, est très résistante vis-à-vis des efforts longitudinaux. Par contre, en cas de choc latéral, les efforts transitant par le renfort et issus de la traverse seront essentiellement dirigés parallèlement à l'axe transversal du véhicule. La première paroi va résister efficacement face à ces efforts latéraux, renforcée par le lien avec la deuxième paroi et éventuellement sa liaison avec la quatrième paroi. Elle transmet lesdits efforts à la structure du véhicule en minimisant les déformations. La position de la deuxième paroi formant un angle inférieur à 90° par rapport à l'axe d'extrémité formé par l'extrémité de la traverse et reliée au moins à la première paroi, permet aussi un transfert des efforts latéraux efficace vers la semelle et la structure du véhicule, l'axe d'extrémité étant sensiblement parallèle à l'axe transversal du véhicule. Lorsque le support est suivant un mode de réalisation dans lequel ledit support comporte une troisième paroi, ladite troisième paroi apporte un maintien plus rigide de la traverse vis-à-vis des mouvements de traverses générant des mouvements de rotation de ladite traverse suivant sensiblement l'axe d'extrémité de la traverse. In one embodiment of the invention, the dashboard structure comprises at least one support as described above and a dashboard crossmember, said support being attached to one end of said crossmember, and said end on which is fixed said support is in the form of a cylinder, whose axis will be called end axis, the first wall of the support extending in a plane substantially parallel to said end axis and the second wall s' extending in a plane forming an acute angle with said end axis so that the edge of the second wall attached to the cross-member is closer to the middle of the cross-member than the edge of said second wall connected to the sole, said middle of the crossbeam being the zone of the crossmember at equidistance between the two ends of said crossmember. This configuration allows a particularly effective transmission of forces to the sole, particularly in the case where the dashboard structure is disposed in the vehicle so that the first wall is parallel to the horizontal plane of the vehicle, the horizontal plane of the vehicle. vehicle being the plane parallel to the longitudinal and transverse axis of the vehicle. In the event of a front impact, the forces passing through the support are essentially parallel to the longitudinal axis of the vehicle. The first wall, reinforced against buckling, by its connection with the second wall and possibly its connection with the fourth wall, is very resistant to longitudinal forces. On the other hand, in the event of a lateral impact, the forces passing through the reinforcement and coming from the crossbar will essentially be directed parallel to the transverse axis of the vehicle. The first wall will resist effectively against these lateral forces, reinforced by the connection with the second wall and possibly its connection with the fourth wall. It transmits said forces to the structure of the vehicle by minimizing the deformations. The position of the second wall forming an angle less than 90 ° with respect to the end axis formed by the end of the cross member and connected at least to the first wall, also allows a transfer of effective lateral forces towards the sole and the structure of the vehicle, the end axis being substantially parallel to the transverse axis of the vehicle. When the support is according to an embodiment in which said support comprises a third wall, said third wall provides a more rigid support of the cross-member vis-à-vis the movements of sleepers generating rotational movements of said cross member substantially the end axis of the crossbar.
L'invention porte aussi sur un véhicule comportant une traverse fixée à la structure du véhicule par au moins un support tel que décrit précédemment. En particulier, la traverse pourra être une traverse de planche de bord. Dans un mode de réalisation particulier du véhicule suivant l'invention, le support est fixé à une traverse de planche de bord et à la structure du véhicule, tel que la première paroi est sensiblement parallèle au plan horizontal dans le référentiel du véhicule, ledit plan horizontal étant défini par l'axe longitudinal X dudit véhicule et l'axe transversal Y dudit véhicule, et la quatrième paroi du support est disposée sensiblement parallèlement à un plan perpendiculaire à l'axe Y. The invention also relates to a vehicle comprising a cross member fixed to the vehicle structure by at least one support as described above. In particular, the cross member may be a cross dashboard. In a particular embodiment of the vehicle according to the invention, the support is fixed to a dashboard crossmember and to the vehicle structure, such that the first wall is substantially parallel to the horizontal plane in the reference frame of the vehicle, said plane horizontal being defined by the longitudinal axis X of said vehicle and the transverse axis Y of said vehicle, and the fourth wall of the support is disposed substantially parallel to a plane perpendicular to the axis Y.
Dans un autre mode de réalisation de l'invention, la traverse de planche de bord est maintenue à la structure du véhicule au moins par un support de traverse tel que décrit précédemment, ainsi que par un bras de soutien de traverse fixé d'une part à la traverse et d'autre part en haut de tablier avant. Le haut du tablier avant peut être un élément de la structure du véhicule disposé en bas de pare-brise. In another embodiment of the invention, the dashboard cross member is held in the vehicle structure at least by a cross-member support as described above, as well as by a crossbar support arm fixed on the one hand at the transom and secondly at the top of the apron before. The top of the front apron may be an element of the vehicle structure disposed at the bottom of the windshield.
Le support est réalisé de manière préférentielle en tôle métallique, comme par exemple en acier, en aluminium ou alliage d'aluminium. Il peut être aussi réalisé en matériau plastique ou composite. Dans le cas de matière composite ou plastique, la pièce peut être réalisée par moulage, en une pièce ou plusieurs pièces. Elle peut comporter des inserts métalliques pour permettre sa fixation par soudage sur la traverse lorsque ledit support est en matériau plastique ou composite, et/ou permettre de renforcer sa rigidité. The support is preferably made of sheet metal, such as steel, aluminum or aluminum alloy. It can also be made of plastic or composite material. In the case of composite or plastic material, the piece can be made by molding, in one piece or several pieces. It may comprise metal inserts to allow its attachment by welding on the crosspiece when said support is made of plastic or composite material, and / or to enhance its rigidity.
Grâce à un support de traverse plus rigide, la jambe de force reliant ladite traverse de planche de bord au plancher du véhicule ou à la partie basse du tablier avant, classiquement utilisée pour soutenir la traverse de planche de bord, peut être supprimée sans dégrader les prestations en vibration. 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 : With a stiffer cross support, the strut connecting said dashboard cross member to the floor of the vehicle or the lower part of the front deck, conventionally used to support the dashboard cross member, can be removed without degrading the benefits in vibration. The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the appended drawings, in which:
Les figures 1, 2 et 3 représentent différentes vues d'un support de traverse suivant l'art antérieur. La fig. 3 est une vue d'un tel support sur lequel est fixé une traverse de planche de bord. Figures 1, 2 and 3 show different views of a cross support according to the prior art. Fig. 3 is a view of such a support on which is fixed a cross dashboard.
La fig. 4 représente un support de traverse suivant l'invention, comportant une semelle, quatre parois, et dont l'une des parois comporte une languette avec une zone de préhension.  Fig. 4 shows a cross support according to the invention, comprising a sole, four walls, and one of whose walls comprises a tongue with a gripping zone.
La fig. 5 est une vue suivant un angle différent du support suivant la figure 4.  Fig. 5 is a view at a different angle of the support according to Figure 4.
- La fig. 6 représente le support de traverse sur lequel est fixée une traverse de planche de bord.  - Fig. 6 shows the cross support on which is fixed a cross dashboard.
La fig. 7 représente le support de traverse avec une variante de la forme d'un des bords de la première paroi dudit support, suivant la vue de la fig. 6.  Fig. 7 shows the cross support with a variant of the shape of one of the edges of the first wall of said support, according to the view of FIG. 6.
La fig. 8 représente le support de traverse suivant la même vue que la fig. 5, avec une indication de position de cordons de soudures pour la fixation des parois les unes aux autres ainsi que pour la fixation de la traverse sur ledit support.  Fig. 8 shows the cross support in the same view as FIG. 5, with an indication of the position of weld seams for fixing the walls to each other as well as for fixing the cross member on said support.
La fig. 9 est une vue montrant une traverse de planche de bord sur laquelle est fixé un support et un bras de soutien destiné à être fixé à élément de la structure du véhicule disposé en bas de pare-brise. Comme illustré en fig. 4 et 5, le support 1 comporte une semelle 10 sur laquelle sont reliées une première paroi 11 et une deuxième paroi 12. Lesdites parois 11 et 12 sont reliées entre elles. Dans les fig.4 et 5, un des bords de la deuxième paroi est reliée à la surface de la première paroi, par exemple par soudage ou par collage, ou par tout autre moyen de fixation d'une paroi sur une autre paroi connu par l'homme du métier. En variante, les deux parois 11 et 12 peuvent être reliées entre elles par leur bord respectif. Les deux parois 11 et 12 peuvent aussi être réalisées à partir d'un pliage de tôle, la liaison entre lesdites parois 11 et 12 étant alors réalisée par une continuité de matière au niveau de la zone pliée. Il en est de même pour la liaison entre les parois 11 et 12 et la semelle 10. Au moins une partie des bords des parois 11 et 12, qui sont opposés aux bords desdites parois 11 et 12 reliés à la semelle, sont destinés à être fixés à la traverse de planche de bord 2 non représenté dans les fig. 4 et 5. En particulier, la forme du bord de la deuxième paroi 12 destiné à être fixé sur la traverse suit au moins en partie la forme de ladite traverse 2 de manière à permettre une fixation dudit bord sur la surface de ladite traverse 2. De manière à renforcer la rigidité du renfort 1, la deuxième paroi 12 est positionnée suivant un plan sensiblement perpendiculaire au plan défini par la première paroi 11. Le support 1 comporte en outre une troisième paroi 13 disposée en regard de la première paroi 11. Au moins l'un des bords de ladite troisième paroi 13 est relié à la deuxième paroi 12 et un autre des bords de ladite troisième paroi 13 est destinée à être fixé à la traverse 2. Cette troisième paroi 13 vient renforcer la liaison entre la traverse 2 et le support 1, améliorer la rigidité de la deuxième paroi 12 et la rigidité du support 1. En fig.4, la troisième paroi 13 n'est pas reliée à la semelle 10. Pour renforcer d'avantage la rigidité du support 1, un des bords de ladite troisième paroi 13 peut être relié à ladite semelle 10. Fig. 9 is a view showing a dashboard crossmember on which is fixed a support and a support arm for attachment to the vehicle structure element disposed at the bottom of the windshield. As illustrated in fig. 4 and 5, the support 1 comprises a soleplate 10 on which are connected a first wall 11 and a second wall 12. Said walls 11 and 12 are interconnected. In FIGS. 4 and 5, one of the edges of the second wall is connected to the surface of the first wall, for example by welding or gluing, or by any other means for attaching a wall to another wall known to the skilled person. Alternatively, the two walls 11 and 12 may be interconnected by their respective edge. The two walls 11 and 12 can also be made from a sheet bending, the connection between said walls 11 and 12 then being made by continuity of material at the folded area. It is the same for the connection between the walls 11 and 12 and the sole 10. At least a portion of the edges of the walls 11 and 12, which are opposite the edges of said walls 11 and 12 connected to the sole, are intended to be attached to the dashboard crossbar 2 not shown in FIGS. 4 and 5. In particular, the shape of the edge of the second wall 12 intended to be fixed on the crosspiece at least partially follows the shape of said cross member 2 so as to allow attachment of said edge on the surface of said crosspiece 2. In order to reinforce the stiffness of the reinforcement 1, the second wall 12 is positioned in a plane substantially perpendicular to the plane defined by the first wall 11. The support 1 further comprises a third wall 13 disposed facing the first wall 11. At least one of the edges of said third wall 13 is connected to the second wall 12 and another of the edges of said third wall 13 is intended to be fixed to the cross member 2. This third wall 13 reinforces the connection between the cross member 2 and the support 1, improve the rigidity of the second wall 12 and the rigidity of the support 1. In fig.4, the third wall 13 is not connected to the sole 10. To further strengthen the rigidity of the support 1, one of the edges of said third wall 13 may be re connected to said sole 10.
Comme montré dans les figures 4 et 5, dans ce mode de réalisation préférentiel, le support 1 comporte aussi une quatrième paroi 14 faisant face à la troisième paroi 13. La quatrième paroi 14 est reliée par un de ses bords à la semelle 10. La première paroi 11 et la troisième paroi 13 sont reliées à ladite quatrième paroi 14. Cette liaison peut être réalisée par le bord d'une des parois 13 ou 14 en contact avec la surface de l'autre paroi, ou bord à bord. La liaison peut être faite par tout moyen connu par l'homme du métier pour maintenir une paroi à une autre, comme par exemple par soudage, collage, ou par pliage d'une plaque ou encore par emboîtement. La troisième paroi 13 est formée d'au moins une partie plane 131. On préférera, pour optimiser la rigidité du support 1, une configuration du support 1 dans laquelle la partie plane 131 est perpendiculaire à la quatrième paroi 14, s'étendant au moins de la deuxième paroi 12 à la quatrième paroi 14. La troisième paroi 13 peut comporter aussi une deuxième partie plane s'étendant de la deuxième paroi 12 à la quatrième paroi 14, la partie plane étant perpendiculaire à ladite deuxième paroi 12 ainsi qu'à ladite quatrième paroi 14. As shown in Figures 4 and 5, in this preferred embodiment, the support 1 also has a fourth wall 14 facing the third wall 13. The fourth wall 14 is connected by one of its edges to the sole 10. The first wall 11 and the third wall 13 are connected to said fourth wall 14. This connection can be made by the edge of one of the walls 13 or 14 in contact with the surface of the other wall, or edge to edge. The connection can be made by any means known to those skilled in the art to maintain a wall to another, such as for example by welding, gluing, or by folding a plate or by interlocking. The third wall 13 is formed of at least one plane portion 131. To optimize the rigidity of the support 1, a configuration of the support 1 in which the flat portion 131 is perpendicular to the fourth wall 14, extending at least from the second wall 12 to the fourth wall 14. The third wall 13 may also comprise a second flat portion extending from the second wall 12 to the fourth wall 14, the flat portion being perpendicular to said second wall 12 as well as to said fourth wall 14.
La troisième paroi 13 comporte aussi une languette de renfort 132 de préférence plane, comportant un bord relié à la quatrième paroi 14. Le bord de la troisième paroi 13 relié à la surface de la quatrième paroi 14 forme une ligne brisée, dont au moins un premier segment est formé par un des bords de la partie plane 131 et au moins un deuxième segment est formé par l'un des bords de la languette de renfort 132. La languette de renfort 132 est disposée de manière à former un angle avec la partie plane 131 de ladite paroi 13. Cette languette de renfort 132 rigidifie la quatrième paroi 14. Dans le mode de réalisation représenté en figures 4 et 5, la semelle 10 est sensiblement plane, et la languette de renfort 132 est sensiblement parallèle au plan défini par la semelle 10, et la deuxième partie plane de la troisième paroi 13 est sensiblement perpendiculaire à ladite semelle 10. The third wall 13 also comprises a reinforcing tongue 132 preferably flat, having an edge connected to the fourth wall 14. The edge of the third wall 13 connected to the surface of the fourth wall 14 forms a broken line, of which at least one first segment is formed by one of the edges of the flat portion 131 and at least one second segment is formed by one of the edges of the reinforcing tongue 132. The tongue of reinforcement 132 is arranged to form an angle with the flat portion 131 of said wall 13. This reinforcement tongue 132 stiffens the fourth wall 14. In the embodiment shown in FIGS. 4 and 5, the soleplate 10 is substantially flat, and the reinforcement tongue 132 is substantially parallel to the plane defined by the flange 10, and the second flat portion of the third wall 13 is substantially perpendicular to said flange 10.
La quatrième paroi 14 comporte en outre une languette de préhension 141 s'étendant à l'opposé de la semelle 10. Ladite languette de préhension 141 comprend une zone de préhension 142 sous la forme d'un trou de préhension. Cette zone de préhension 142 est destinée à permettre la manutention d'une structure composé d'au moins un support 1 de traverse de planche de bord fixé à une traverse de planche de bord 2, à l'aide d'un appareil de manutention, ledit appareil de manutention comportant un moyen de préhension coopérant avec la zone de préhension. De manière préférentielle, la languette de renfort 132 de la troisième paroi 13 est reliée par un de ses bords à la quatrième paroi 14 au niveau de ladite languette de préhension 141 de manière à rigidifier ladite languette de préhension 141. Sur les bords de ladite languette de préhension 141 sont disposés des bords tombés de renfort 143, pliés sensiblement à 90° par rapport à la surface de la languette de préhension 141, de manière à rigidifier ladite languette de préhension 141. Ces bords tombés de renfort 143 sont disposés de manière préférentielle au niveau de la zone de préhension 142 de manière à rigidifier la languette de préhension 141 au niveau de ladite zone de préhension 142. D'autres moyens permettant la coopération d'un moyen de préhension avec la zone de préhension 142 peuvent être prévus. Lors de la manipulation, la rigidité de la zone de préhension 142 est assurée dans différentes directions grâce aux bords tombés de renfort 143 et au lien avec la troisième paroi 13. Dans la fig. 4, la quatrième paroi 14 a une forme en T, la branche horizontale du T étant reliée à la semelle 10 et la branche verticale du T comportant la zone de préhension 142 à l'extrémité opposée à la branche horizontale. The fourth wall 14 further comprises a gripping tab 141 extending away from the flange 10. Said gripping tab 141 comprises a gripping area 142 in the form of a gripping hole. This gripping zone 142 is intended to allow the handling of a structure composed of at least one support dashboard cross member 1 attached to a dashboard cross member 2, using a handling device, said handling apparatus comprising a gripping means cooperating with the gripping area. Preferably, the reinforcement tongue 132 of the third wall 13 is connected by one of its edges to the fourth wall 14 at the level of said gripping tongue 141 so as to stiffen said gripping tongue 141. On the edges of said tongue gripping members 141 are provided with reinforced flanged edges 143, bent substantially at 90 ° with respect to the surface of the gripping tab 141, so as to stiffen said gripping tab 141. These flanged edges 143 are preferentially arranged at the level of the gripping zone 142 so as to stiffen the gripping tab 141 at said gripping area 142. Other means for the cooperation of a gripping means with the gripping area 142 may be provided. During handling, the rigidity of the gripping zone 142 is ensured in different directions by virtue of the reinforced reinforcement edges 143 and the connection with the third wall 13. In FIG. 4, the fourth wall 14 has a T-shape, the horizontal leg of the T being connected to the sole 10 and the vertical leg of the T having the gripping zone 142 at the end opposite to the horizontal leg.
La semelle 10 peut être de forme plate, comme montré dans les fig. 4 et 5, ou être de forme plus complexe, comme par exemple avoir des bords tombés sur son pourtour, et sur lesquels bords tombés les parois 11, 12,13 et 14 sont reliées, ou certaines de ces parois. Dans le mode préférentiel représenté dans les figures 4 et 5, la semelle 10, la première paroi 11, la deuxième paroi 12 et la quatrième paroi 14 sont réalisées par pliage d'une tôle métallique. La première paroi 11 et la deuxième paroi 12, ainsi que la première paroi 11 et la quatrième paroi 14 sont reliées entre elles par soudage d'un bord de l'une des parois sur la surface de l'autre paroi. La troisième paroi 13 est une pièce rajoutée dont un des bords est soudé à la deuxième paroi 12 et un autre bord à la quatrième paroi 14. La réalisation du support 1 de traverse de planche de bord est ainsi constituée uniquement de 2 pièces pliées et fixées entre elles. The sole 10 may be flat, as shown in Figs. 4 and 5, or be of more complex shape, such as for example having edges that have fallen around its periphery, and on which the walls 11, 12, 13 and 14 are connected, or some of these walls. In the preferred embodiment shown in Figures 4 and 5, the sole 10, the first wall 11, the second wall 12 and the fourth wall 14 are made by folding a metal sheet. The first wall 11 and the second wall 12, and the first wall 11 and the fourth wall 14 are interconnected by welding an edge of one of the walls on the surface of the other wall. The third wall 13 is an add-on part, one edge of which is welded to the second wall 12 and another edge to the fourth wall 14. The embodiment of the support of the dashboard transom support 1 thus consists solely of 2 folded and fixed parts. between them.
La troisième paroi pourrait aussi être obtenue par pliage d'une partie de la plaque à partir de la laquelle sont formées la semelle 10, la première paroi 11, la deuxième paroi 12 et la quatrième paroi 14. Dans ce mode de réalisation, le support 1 serait alors réalisé d'une seule pièce pliée. The third wall could also be obtained by folding a part of the plate from which are formed the sole 10, the first wall 11, the second wall 12 and the fourth wall 14. In this embodiment, the support 1 would then be made of a single piece folded.
La semelle 10 comporte des moyens permettant la mise en place de moyens de fixation aptes à fixer ladite semelle 10 à la structure du véhicule. Dans le fig. 4, la semelle 10 comporte des trous permettant le passage de vis de fixation. The soleplate 10 comprises means allowing the establishment of fastening means adapted to fix said flange 10 to the vehicle structure. In fig. 4, the sole 10 has holes for the passage of fixing screws.
La fig. 6 montre un support 1 sur lequel est fixée une traverse de planche de bord 2. La fig. 6 ne montre que l'extrémité de la traverse 2. L'extrémité de la traverse 2 est de forme sensiblement cylindrique, dont l'axe du cylindre forme l'axe d'extrémité 3. La traverse 2 est fixée sur un bord de la première paroi 10, un bord de la deuxième paroi 12 et un bord de la troisième paroi 13. La première paroi 11 et la partie plane 131 de la troisième paroi 13 sont disposées sensiblement parallèles à l'axe d'extrémité 3. La quatrième paroi 14 est disposée sensiblement perpendiculairement à l'axe d'extrémité 3. La deuxième paroi 12 s'étend de manière oblique par rapport à la semelle 10 et est perpendiculaire à la première paroi 11. C'est-à-dire que ladite deuxième paroi 12 est disposée de manière à faire un angle avec l'axe d'extrémité 3, de manière à ce que le bord de la deuxième paroi 12 qui est fixé à la semelle 10 soit plus éloigné du milieu de la traverse 2 que le bord de ladite deuxième paroi 12 qui est lié à ladite traverse 2, ledit milieu de la traverse 2 étant la zone de la traverse 2 à équidistance entre les deux extrémités de ladite traverse 2, la deuxième paroi 12 étant aussi perpendiculaire à la première paroi 11. Le bord de l'extrémité de la traverse 2 comporte un bord tombé 21 orienté vers l'intérieur de ladite traverse 2. Ce bord tombé 21 permet de rigidifier l'extrémité de la traverse 2 contre des efforts tendant à déformer la section de ladite extrémité de la traverse 2. Ce bord tombé 21 peut être réalisé par déformation de l'extrémité de la traverse au moment de sa mise en forme, ou par ajout d'une pièce en forme de rondelle adaptée à la section de l'extrémité de la traverse 2, et qui est fixée au bord de l'extrémité de la traverse 2. Fig. 6 shows a support 1 on which is fixed a dashboard cross 2. FIG. 6 shows only the end of the cross member 2. The end of the cross member 2 is substantially cylindrical in shape, the axis of the cylinder forms the end axis 3. The cross member 2 is fixed on an edge of the first wall 10, an edge of the second wall 12 and an edge of the third wall 13. The first wall 11 and the flat portion 131 of the third wall 13 are arranged substantially parallel to the end axis 3. The fourth wall 14 is disposed substantially perpendicular to the end axis 3. The second wall 12 extends obliquely with respect to the sole 10 and is perpendicular to the first wall 11. That is to say that said second wall 12 is arranged to make an angle with the end axis 3, so that the edge of the second wall 12 which is fixed to the soleplate 10 is further from the middle of the crossbar 2 than the edge of the said second wall 12 which is connected to said cross member 2, said mid place of the crossbeam 2 being the zone of the crossbeam 2 equidistant between the two ends of said crossbeam 2, the second wall 12 being also perpendicular to the first wall 11. The edge of the end of the crosspiece 2 has a dropped edge 21 facing the inside of said crosspiece 2. This fallen edge 21 makes it possible to stiffen the end of the crosspiece 2 against efforts tending to deform the section of said end This falling edge 21 may be made by deforming the end of the crosspiece at the moment of its shaping, or by adding a washer-shaped piece adapted to the cross-section of the end of the crosspiece. crossbar 2, and which is fixed to the edge of the end of the crossbar 2.
La fig. 7 montre une variante de la forme de la première paroi 11 dans laquelle le bord de ladite première paroi 11 fixé à la traverse 2 se prolonge en avant de l'extrémité de ladite traverse 2 par une excroissance 110 s'étendant devant ladite extrémité de la traverse 2. Cette excroissance 110 limite les déplacements de la traverse 2 suivant l'axe d'extrémité 3 dans la direction de la quatrième paroi 14. Lorsque la traverse 2 est fixée à la structure du véhicule, l'axe d'extrémité 3 est disposé transversalement par rapport au véhicule. En cas de choc latéral, l'excroissance 110 limite le déplacement de la traverse 2 sous l'effort dudit choc latéral. La fig. 8 montre un exemple de positionnement de cordon de soudure 4 entre les parois, ainsi que sur les bords de la première paroi 11, deuxième paroi 12 et troisième paroi 13 destinés à être fixés sur la traverse de planche de bord. Le support 1 est fixé à la traverse 2, formant une structure de planche de bord, de manière à ce qu'une fois ladite structure de planche de bord montée sur la structure du véhicule, le support de traverse 1 est disposé tel que la première paroi 11 est sensiblement parallèle au plan horizontal du véhicule, défini par un axe longitudinal X et transversal Y du véhicule, la semelle 10 est disposé suivant un plan vertical défini par l'axe Y et un axe vertical Z du véhicule, et la quatrième paroi 14 est parallèle à un autre plan vertical défini par l'axe X et l'axe Z du véhicule. La deuxième paroi 12 est suivant un plan parallèle à l'axe vertical Z du véhicule. La fig. 9 montre une structure de traverse de planche de bord comportant une traverse 2 de planche de bord fixée par au moins une de ses extrémités à un support 1, un bras de soutien 5 de la traverse 2 étant fixé d'une part à la traverse 2 et d'autre part étant destiné à être fixé en partie haut de tablier avant, comme par exemple sur un élément de structure du véhicule disposé le long du bas du pare-brise. Ce bras de soutien 5 est disposé sensiblement au niveau de la fixation sur la traverse 2 de la colonne de direction afin d'assurer un maintien efficace de ladite colonne de direction, notamment en cas de choc. En réalisant un support 1 de traverse 2 rigide, il devient possible de supprimer les renforts habituellement positionnés sensiblement verticaux entre la traverse 2 et un élément du plancher du véhicule. La fixation par le support 1 à chaque extrémité de la traverse 2 et la mise en place du bras de soutien 5 suffit à maintenir la traverse 2 rigidement. Fig. 7 shows a variant of the shape of the first wall 11 in which the edge of said first wall 11 fixed to the crosspiece 2 is extended forward of the end of said cross member 2 by an outgrowth 110 extending in front of said end of the 2. This protrusion 110 limits the displacements of the cross member 2 along the end axis 3 in the direction of the fourth wall 14. When the cross member 2 is fixed to the vehicle structure, the end axis 3 is disposed transversely to the vehicle. In the event of a lateral impact, the protrusion 110 limits the displacement of the crossmember 2 under the force of said lateral impact. Fig. 8 shows an example of weld bead positioning 4 between the walls, as well as on the edges of the first wall 11, second wall 12 and third wall 13 intended to be fixed on the dashboard cross member. The support 1 is attached to the cross member 2, forming a dashboard structure, so that once said dashboard structure mounted on the vehicle structure, the cross support 1 is arranged such that the first wall 11 is substantially parallel to the horizontal plane of the vehicle, defined by a longitudinal axis X and transverse Y of the vehicle, the sole 10 is disposed in a vertical plane defined by the Y axis and a vertical axis Z of the vehicle, and the fourth wall 14 is parallel to another vertical plane defined by the X axis and the Z axis of the vehicle. The second wall 12 is in a plane parallel to the vertical axis Z of the vehicle. Fig. 9 shows a dashboard transom structure comprising a dashboard cross member 2 fixed by at least one of its ends to a support 1, a support arm 5 of the cross member 2 being fixed on the one hand to the cross member 2 and on the other hand being intended to be fixed in the upper part of the front apron, such as for example on a structural element of the vehicle disposed along the bottom of the windshield. This support arm 5 is disposed substantially at the fastening on the crossbar 2 of the steering column to ensure effective maintenance of said steering column, especially in case of impact. By making a support 1 rigid cross 2, it becomes possible to remove the reinforcements usually positioned substantially vertical between the cross member 2 and a vehicle floor element. The fixing by the support 1 at each end of the crossbar 2 and the establishment of the support arm 5 is sufficient to maintain the cross 2 rigidly.

Claims

REVENDICATION CLAIM
1/ Support (1) destiné à fixer une traverse (2), notamment de planche de bord, à la structure d'un véhicule, comportant une semelle (10) destinée à fixer ledit support (1) à ladite structure du véhicule, caractérisé en ce que ledit support (1) comporte au moins deux parois sensiblement planes, une première paroi (11) et une deuxième paroi (12), reliées chacune à la semelle (10) par un de leur bord respectif, et ayant chacune au moins un bord destiné à être fixé à la traverse, les deux parois s'étendant toutes les deux du même côté de la semelle (10), et en ce que la première paroi (11) et la deuxième paroi (12) sont reliées entre elles par au moins un bord de l'une desdites parois (11, 12), ledit bord étant adjacent au bord lié à la semelle (10). 1 / support (1) intended to fix a cross member (2), in particular of the instrument panel, to the structure of a vehicle, comprising a soleplate (10) intended to fix said support (1) to said structure of the vehicle, characterized in that said support (1) comprises at least two substantially planar walls, a first wall (11) and a second wall (12), each connected to the sole (10) by one of their respective edges, and each having at least an edge for attachment to the cross-member, both walls extending both on the same side of the sole (10), and in that the first wall (11) and the second wall (12) are interconnected by at least one edge of one of said walls (11, 12), said edge being adjacent to the edge bonded to the sole (10).
2/ Support (1) suivant la revendication 1 caractérisé en ce que ledit support (1) comporte au moins une troisième paroi (13) en regard de la première paroi (11), ladite troisième paroi (13) étant reliée au moins à la deuxième paroi (12), et ladite troisième paroi (13) étant destinée à être fixée par l'un de ses bords à la traverse (2). 2 / support (1) according to claim 1 characterized in that said support (1) comprises at least a third wall (13) facing the first wall (11), said third wall (13) being connected at least to the second wall (12), and said third wall (13) being intended to be fixed by one of its edges to the crossbar (2).
3/ Support (1) suivant la revendication 2 caractérisé en ce que le support (1) comporte au moins une quatrième paroi (14) placée en regard de la deuxième paroi (12), reliée par un de ses bords à la semelle (10) et reliée au moins à la première paroi (11) et à la troisième paroi (13). 3 / support (1) according to claim 2 characterized in that the support (1) comprises at least a fourth wall (14) placed opposite the second wall (12), connected by one of its edges to the sole (10). ) and connected at least to the first wall (11) and the third wall (13).
4/ Support (1) suivant la revendication 3 caractérisé en ce que la quatrième paroi (14) comporte une zone de préhension (142), tel qu'une ouverture de forme rectangulaire, apte à recevoir un moyen de préhension afin de permettre la manutention de l'ensemble traverse (2) et support (1), lorsque le support (1) est fixé sur ladite traverse (2), par un appareil de manutention comportant ledit moyen de préhension. 4 / support (1) according to claim 3 characterized in that the fourth wall (14) comprises a gripping area (142), such as an opening of rectangular shape, adapted to receive a gripping means to allow handling from the whole crossbar (2) and support (1), when the support (1) is fixed on said crossbar (2), by a handling device comprising said gripping means.
5/ Support (1) suivant l'une des revendications 3 à 4 caractérisé en ce que la troisième paroi (13) comporte au moins une partie plane (131) et une languette de renfort plane (132), la languette de renfort (132) étant disposée suivant un plan non-parallèle à ladite partie plane (131), la troisième paroi (13) étant liée au moins par un de ses bords à la quatrième paroi (14), sur la face de ladite quatrième paroi (14) orientée du côté de la deuxième paroi (12), ledit bord étant composé au moins en partie par un des bords de la partie plane (131) et un des bords de la languette de renfort (132), de manière à rigidifier ladite quatrième paroi (14). 5 / support (1) according to one of claims 3 to 4 characterized in that the third wall (13) comprises at least a flat portion (131) and a flat reinforcing tongue (132), the reinforcing tongue (132). ) being arranged in a non-parallel plane to said flat portion (131), the third wall (13) being bonded at least by one of its edges to the fourth wall (14), on the face of said fourth wall (14) oriented on the side of the second wall (12), said edge being composed at least in part by one of the edges of the flat portion (131) and one of the edges of the reinforcing tongue (132), so as to stiffen said fourth wall (14).
6/ Support 1 suivant l'une des revendications précédentes caractérisé en ce qu'au moins une partie de la semelle (10) et au moins l'une des parois (11, 12, 13, 14) sont réalisées par pliage d'une unique tôle. 6 / support 1 according to one of the preceding claims characterized in that at least a portion of the sole (10) and at least one of the walls (11, 12, 13, 14) are made by folding a single sheet.
7/ Structure de planche de bord caractérisée en ce qu'elle comporte au moins un support (1) suivant l'une des revendications précédentes et une traverse (2) de planche de bord, ledit support (1) étant fixé à l'une des extrémités de ladite traverse (2), et en ce que ladite extrémité sur laquelle est fixé ledit support (1) est sous la forme d'un cylindre, dont l'axe sera nommé axe d'extrémité (3), la première paroi (11) du support (1) s'étendant dans un plan sensiblement parallèle audit axe d'extrémité (3) et la deuxième paroi (12) s'étendant dans un plan formant un angle aigu avec ledit axe d'extrémité (3) de manière à ce que le bord de la deuxième paroi (12) fixé à la traverse (2) soit plus proche du milieu de la traverse (2) que le bord de ladite deuxième paroi (12) liée à la semelle (10), ledit milieu de la traverse (2) étant la zone de ladite traverse (2) à équidistance entre les deux extrémités de ladite traverse (2). 7 / dashboard structure characterized in that it comprises at least one support (1) according to one of the preceding claims and a cross member (2) of the dashboard, said support (1) being fixed to one ends of said crossbar (2), and in that said end on which is fixed said support (1) is in the form of a cylinder, whose axis will be called end axis (3), the first wall (11) the support (1) extending in a plane substantially parallel to said end axis (3) and the second wall (12) extending in a plane forming an acute angle with said end axis (3) in such a way that the edge of the second wall (12) fixed to the cross-member (2) is closer to the middle of the cross-member (2) than the edge of the said second wall (12) connected to the sole (10), said middle of the crossmember (2) being the area of said crossmember (2) equidistant between the two ends of said crossmember (2).
8/ Véhicule comportant une traverse (2) fixée à la structure dudit véhicule par au moins un support (1) suivant l'une des revendications de 1 à 6. 9/ Véhicule suivant la revendication 8 caractérisé en ce que le support (1) est fixé à une traverse (2) de planche de bord et à la structure du véhicule, en ce que ledit support (1) est disposé tel que la première paroi (11) est sensiblement parallèle au plan horizontal dans le référentiel du véhicule, ledit plan horizontal étant défini par l'axe longitudinal X dudit véhicule et l'axe transversal Y dudit véhicule, et la quatrième paroi (14) du support (1) est disposée sensiblement parallèlement à un plan perpendiculaire à l'axe Y. 8 / Vehicle comprising a crossbar (2) fixed to the structure of said vehicle by at least one support (1) according to one of claims 1 to 6. 9 / Vehicle according to claim 8 characterized in that the support (1) is fixed to a cross member (2) of the dashboard and to the vehicle structure, in that said support (1) is arranged such that the first wall (11) is substantially parallel to the horizontal plane in the reference frame of the vehicle, said horizontal plane being defined by the longitudinal axis X of said vehicle and the transverse axis Y of said vehicle, and the fourth wall (14) of the support (1) is disposed substantially parallel to a plane perpendicular to the Y axis.
10/ Véhicule suivant la revendication 9 caractérisé en ce que la traverse (2) de planche de bord est maintenue à la structure du véhicule au moins par un support (1) suivant l'une des revendications de 1 à 6 ainsi que par un bras de soutien (5) fixé d'une part à la traverse (2) et d'autre part en partie haute du tablier avant du véhicule. 10 / Vehicle according to claim 9 characterized in that the cross member (2) of the dashboard is held in the vehicle structure at least by a support (1) according to one of claims 1 to 6 and by an arm support (5) fixed on the one hand to the crossbar (2) and on the other hand in the upper part of the front apron of the vehicle.
PCT/EP2014/076503 2013-12-18 2014-12-04 Reinforced lightweight support for a dashboard cross-member WO2015090984A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1362940A FR3014820B1 (en) 2013-12-18 2013-12-18 REINFORCED SUPPORT AND ALLOY FOR DRIVING BOARD TRAVERSE
FR1362940 2013-12-18

Publications (1)

Publication Number Publication Date
WO2015090984A1 true WO2015090984A1 (en) 2015-06-25

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FR (1) FR3014820B1 (en)
WO (1) WO2015090984A1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
US11731707B2 (en) 2019-09-09 2023-08-22 Kirchhoff Automotive Deutschland Gmbh Instrument panel support for a motor vehicle

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CN106335549B (en) * 2015-07-16 2018-08-03 上汽通用五菱汽车股份有限公司 A kind of dashboard cross member mounting assembly

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FR2791313A1 (en) * 1999-03-23 2000-09-29 Allibert Ind Method of pre-assembly of motor vehicle dashboard involves using frame with cross bar having brackets onto which components are assembled
US20040056463A1 (en) * 2001-11-26 2004-03-25 General Electric Company Instrument panel thermoplastic energy absorbers
FR2915725A1 (en) * 2007-05-02 2008-11-07 Renault Sas Motor vehicle, has dashboard crossbeam comprising fixation leg passing through slit formed in internal wall and extending between internal wall and external wall, and soldered on support of safety closing case
FR2979886A1 (en) 2011-09-09 2013-03-15 Faurecia Interieur Ind Cross-piece for instrument panel of vehicle i.e. car, has two sections comprising walls and assembled with other sections in junction zone, where wall of one of sections is fixed on wall of other section by weld formed by induction brazing

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Publication number Priority date Publication date Assignee Title
FR2791313A1 (en) * 1999-03-23 2000-09-29 Allibert Ind Method of pre-assembly of motor vehicle dashboard involves using frame with cross bar having brackets onto which components are assembled
US20040056463A1 (en) * 2001-11-26 2004-03-25 General Electric Company Instrument panel thermoplastic energy absorbers
FR2915725A1 (en) * 2007-05-02 2008-11-07 Renault Sas Motor vehicle, has dashboard crossbeam comprising fixation leg passing through slit formed in internal wall and extending between internal wall and external wall, and soldered on support of safety closing case
FR2979886A1 (en) 2011-09-09 2013-03-15 Faurecia Interieur Ind Cross-piece for instrument panel of vehicle i.e. car, has two sections comprising walls and assembled with other sections in junction zone, where wall of one of sections is fixed on wall of other section by weld formed by induction brazing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11731707B2 (en) 2019-09-09 2023-08-22 Kirchhoff Automotive Deutschland Gmbh Instrument panel support for a motor vehicle

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FR3014820B1 (en) 2016-02-05
FR3014820A1 (en) 2015-06-19

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