WO2014061027A1 - Structure de renfort comprenant une pluralité de poutres - Google Patents

Structure de renfort comprenant une pluralité de poutres Download PDF

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Publication number
WO2014061027A1
WO2014061027A1 PCT/IN2012/000690 IN2012000690W WO2014061027A1 WO 2014061027 A1 WO2014061027 A1 WO 2014061027A1 IN 2012000690 W IN2012000690 W IN 2012000690W WO 2014061027 A1 WO2014061027 A1 WO 2014061027A1
Authority
WO
WIPO (PCT)
Prior art keywords
beams
reinforcing structure
structure according
section
bridge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IN2012/000690
Other languages
English (en)
Inventor
Firoz Siddiqui
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Faurecia Interior Systems India Pvt Ltd
Original Assignee
Faurecia Interior Systems India Pvt Ltd
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 Faurecia Interior Systems India Pvt Ltd filed Critical Faurecia Interior Systems India Pvt Ltd
Priority to DE112012007028.3T priority Critical patent/DE112012007028T5/de
Priority to PCT/IN2012/000690 priority patent/WO2014061027A1/fr
Publication of WO2014061027A1 publication Critical patent/WO2014061027A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/14—Dashboards as superstructure sub-units
    • B62D25/145—Dashboards as superstructure sub-units having a crossbeam incorporated therein
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
    • B62D29/004—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material the metal being over-moulded by the synthetic material, e.g. in a mould

Definitions

  • Reinforcing structure comprising a plurality of beams
  • the present invention relates to reinforcing structure for a vehicle, of the type comprising at least three beams extending according to a longitudinal direction and at least one connecting portion wherein the three beams are connected together.
  • the invention is more particularly directed to a reinforcing structure forming a crossbeam intended to support an instrument panel in a vehicle, for example an automotive vehicle.
  • a crossbeam is generally made of one tubular structure extending between two front pillars and carrying attachment organs for various items of the instrument panel, a steering column support for example.
  • a tubular element must fulfil several requirements, which can be contradictory : for example, the crossbeam has to be rigid and have an important mechanical strength while it has to be as light as possible, it has to comprise several attachment organs while it has to be flexible in its design to be adapted to its surroundings.
  • Such results are difficult to achieve with a single tubular structure, even if said structure is made of several tubular elements having various geometries and made of different materials adapted to the mechanical strength requirements of the area of the crossbeam in which they extend. Indeed, the assembly of these tubular elements, for " example by welding, imposes limitations in the material used and in the geometry of the elements.
  • EP-2 125 496 discloses a crossbeam comprising two tubular structures parallel to each other and joined together by a connection bridge. However, such an arrangement is still limited in geometry and design and does not permit to obtain a satisfactory stable and rigid structure.
  • One of the aims of the invention is to propose a reinforcing structure which is very flexible in design and which can be adapted to various strength and geometry requirements.
  • the invention relates to a reinforcing structure of the above-mentioned type, wherein at least in the connecting portion, the three beams are spaced from each other and define the edges of a polygonal cross-section ' , said beams being connected together by a connection bridge made of synthetic material.
  • each beam can be adapted to particular requirements, for example due to the surroundings of the beam, without imparting on the features of the other beams. Therefore, a great flexibility, both in geometry and mechanical properties, can be achieved.
  • the reinforcing structure is therefore particularly advantageous when it is for example used as a crossbeam for supporting an instrument panel.
  • connection bridge comprises arms, each extending from a point located in the polygonal cross-section to respectively one of the three beams ;
  • each arm is respectively overmoulded around at least a part of one of the three beams;
  • the polygonal cross-section is a triangle, each edge, or summit, of said triangle being formed by one of the three beams ;
  • At least one of the beams comprises at least one elbow portion, said elbow portion being farther or closer from the other beams than the rest of said beam;
  • At least one connecting bridge is provided to connect the elbow portion to the other beams ;
  • connection bridges - the end parts of the beams are connected to each other by connection bridges; - attachment and/or positioning organs are made in a single piece with the connecting bridge;
  • the structure comprises more than three beams connected together in at least one connecting portion by a connecting bridge made of synthetic material;
  • the synthetic material of the connecting bridge is polyamide (PA) or acrylonitrile butadiene styrene - polycarbonate (ABS-PC); and
  • the reinforcing structure forms a crossbeam intended to support an instrument panel of the vehicle.
  • FIG. 1 is a perspective view of reinforcing structure according to the invention, showing a particular example of design of the reinforcing structure.
  • FIG. 2 is a perspective view of a part of a reinforcing structure according to the invention
  • FIG. 3 is a cross-sectional view of the reinforcing structure along axis Ill-Ill of Fig.
  • the reinforcing structure 1 used as a crossbeam in a vehicle, for example an automotive vehicle. However, it is to be understood that the reinforcing structure according to the invention can have other applications.
  • the reinforcing structure 1 comprises at least three beams 2, 4 and 6 extending substantially longitudinally between two ends parts 8 and 10, intended to be attached to a right and left front pillars of a vehicle.
  • the reinforcing structure 1 is intended to extend over the width of the vehicle and to support an instrument panel (not shown) and various elements of said panel.
  • Each beam can be made of a single tubular element or of a plurality of tubular elements assembled together, for example by welding.
  • the material of each tubular element can be selected based upon the rigidity and strength requirements of the area in which the tubular element will extend in the vehicle. For example, if the tubular element has to carry an element of the instrument panel, it can be made in a strong and resistant material, such as steel, and if another tubular element is not particularly solicited, it can be made in a light material, such as aluminium or magnesium in order to lighten the reinforcing structure.
  • Each beam can be made of a single material or of a plurality of materials, for example by joining several tubular elements made of different materials together. At least two of the three beams 2, 4, 6 can be made in different materials, for example steel and aluminium or magnesium.
  • the beams can have -different dimensions, for example different wall thicknesses and diameters adapted to the mechanical properties wanted for each beam and to the surroundings of the beams. Therefore, if a beam has to be more rigid, it will have a greater wall thickness than the other beams. If a beam is to be surrounded by many elements, its diameter can be reduced relative to the other beams, and so on.
  • each beam can have a particular geometry adapted to its surroundings and to the elements to be attached to the beam.
  • beams 2 and 4 can for example each have an elbow portion 12, wherein the beam is bent such that the elbow portion 12 is offset relative to the rest of the beam.
  • the elbow portion 12 extends along a longitudinal axis substantially parallel to the axis of the rest of the beam.
  • the elbow portion 12 extends between two bent portions 14 joining the elbow portion 12 to the rest of the beam.
  • the elbow portion 12 can be placed anywhere along le length of the beam, for example at an end of the beam. In this case, the elbow portion 12 is joined to the rest of the beam by a single bent portion 14.
  • each beam can be foreseen.
  • the shape of the cross-section of a beam can vary along the length of the beam.
  • the beam can for example have a circular cross-section in an area of the beam and a rectangular cross-section in another area.
  • each beam can have a varying wall thickness and/or diameter along the length of the beam.
  • each beam i.e. its diameter
  • the variations of the geometry of the beams are easier to realize, thereby improving the geometrical flexibility of the reinforcing structure.
  • the beams 2, 4, 6 are spaced from each other such that they each define the edges of a polygonal cross-section.
  • the reinforcing structure 1 has a polygonal shape and that each beam forms one edge, or summit, of said polygon, as shown in Fig. 3, where the beams 2, 4, 6 forms the edges A, B and C of a triangle ABC, shown in dotted lines in Fig. 3.
  • the polygonal cross-section is a triangle.
  • the polygonal cross-section is for example a regular polygon comprising as many edges as there are beams.
  • the polygonal cross-section is therefore for example a rectangle, a square or a diamond.
  • the cross-sectional triangle is a regular triangle, i.e. an equilateral, isosceles or right angled triangle.
  • the triangle is an equilateral triangle, which provides a great stability to the reinforcing structure 1.
  • the triangle becomes an isosceles triangle, as shown in Fig. 1.
  • the beams 2, 4 and 6 can be brought closer from one another. They can even be brought in contact in order to reduce the general diameter of the reinforcing structure 1 if it is needed to adapt the reinforcing structure to its surroundings.
  • the elbow portion 12 of one of the beam can be farther or closer to the other beams than the rest of this one beam, to increase or decrease the space extending between the beams.
  • the reinforcing structure comprises at least one connecting portion wherein a connection bridge 16 connects the beams 2, 4 and 6 together.
  • the beam 2, 4 and 6 are indeed spaced from each other at least in the connecting portion.
  • the reinforcing structure 1 comprises a plurality of connection bridges 16 regularly distributed over the length of the beams 2, 4 and 6 in order to have a rigid and resistant reinforcing structure.
  • the reinforcing structure 1 comprises at least a connection bridge 16 in a central portion of the reinforcing structure 1 and connection bridges 16 at both end parts 8 and 10 of the reinforcing structure.
  • the reinforcing structure 1 furthermore comprises for example a connection bridge 16 where one of the beams comprises a elbow portion 12, thereby connecting the elbow portion 12 to the other beams, as shown in Fig. 1.
  • the elbow portion 12 is therefore rigidly connected to the other beams, which protects it against deformations by its environment.
  • Other connection bridges 6 can be foreseen depending on the mechanical properties wished for the reinforcing structure.
  • connection bridges 16 are each made of a synthetic material, for example a synthetic resin.
  • the connection bridges 16 can be made of various materials, for example a thermosetting or thermoplastic material. The material depends on the requirements regarding the mechanical properties of the connection bridge 16 and more generally of the reinforcing structure, such as the strength needed to support the load imparted by the beams and the vibrational behaviour.
  • the connection bridges 16 are for example made of polyamide (PA) or acrylonitrile butadiene styrene - polycarbonate (ABS- PC).
  • PA polyamide
  • ABS- PC acrylonitrile butadiene styrene - polycarbonate
  • the different connecting bridges 16 can be made of different materials, depending on the strength of the connection required between the beams in the area of the different connecting bridges. This strength can also be adjusted by adding reinforcing fibres in the material of the connecting bridges for example.
  • connection bridge 16 comprises as many arms 18 as there are beams, i.e. three arms 18 in the embodiment shown in the figures.
  • Each arm 18 extends from a point located inside the polygonal cross-section, defined by the beams, to respectively one of the beams.
  • each arm 18 extends from the geometrical centre 20 of the polygonal cross-section to respectively one of the beams. Therefore, each beam is connected to the centre 20 of the polygonal cross- section via one arm 18 of the connection bridge 16 and the arms 18 are connected together at the centre 20 of the polygonal cross-section.
  • geometrical centre 20 of the polygonal cross-section it is meant the centre of gravity of said cross-section.
  • the centre 20 is therefore the point of intersection of the medians of the triangle, i.e. the point of intersection of the lines connecting a summit of the triangle to the centre of the opposite side of the triangle.
  • the centre 20 is the point of intersection of the diagonals of the rectangle, square or diamond forming the cross-section of the reinforcing structure 1.
  • the two lower beams have been represented as extending in a horizontal plane.
  • the beams define a plane inclined relative to a horizontal plane, especially when the reinforcing structure is intended to support a steering column which is inclined.
  • the two lower beams can be inclined relative to a horizontal plane, at least in the area where the steering column is supported.
  • the connecting bridge 16 is moulded in such a way that the end 22 of each arm 18, opposite the centre 20 of the polygonal cross-section, is overmoulded on the beam to which the arm is connected, as more particularly shown in Fig. 3.
  • the end 22 of an arm 18 completely surrounds the contour of the beam to which it is connected, thereby forming a strong connection between the connecting bridge 16 and the beams 2, 4 and 6.
  • at least some ends 22 can surround only a part of the beam to which it is connected.
  • the thickness of the arms 18 and of their ends 22 can be adjusted depending on the strength of the connection required between the beams.
  • the thickness of an arm 18 between the centre 20 and its end 22 is greater than the wall thickness of the end 22 surrounding the beam to which the arm 18 is attached.
  • the thickness of the arm 8 between the centre 20 and its end 22 is substantially 3 mm, whereas the thickness of the end 22 is substantially 1 mm all around the beam.
  • Attachment organs 24 or positioning organs 26 are for example moulded in a single piece with at least one connecting bridge 16. Therefore, the reinforcing structure 1 is able to receive and support functional elements of the instrument panel to be supported by the reinforcing structure 1.
  • the connecting bridges 16 located at the ends of the reinforcing structure 1 are provided with attachment organs 24 to the front left and right pillars of the vehicle receiving the reinforcing structure 1.
  • the above-described reinforcing structure 1 is very flexible in geometry, design, shape and mechanical properties and can be precisely adjusted to its surroundings since each beam can be adapted independently from the others.
  • the reinforcement structure is furthermore simple to produce via the overmoulding of the connecting bridges.
  • the overmoulding furthermore offers a great control over the attachment organs or positioning organs to be added to the connecting bridges or to the reinforcing structure in general.
  • each beam is made of a single tubular element, no welding is needed to produce the reinforcing structure. Therefore the rate of production of the reinforcing structure can be improved. Furthermore, the costs of production can also be reduced since the materials used to form the connecting bridges are lower in cost than multiple welding operations needed to produce a conventional reinforcing structure.

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

Abstract

L'invention porte sur une structure de renfort (1) pour un véhicule, laquelle structure comprend au moins trois poutres (2, 4, 6) s'étendant le long d'une direction longitudinale et au moins une partie de liaison par laquelle les trois poutres (2, 4, 6) sont reliées les unes aux autres. Au moins dans la partie de liaison, les trois poutres (2, 4, 6) sont espacées les unes des autres et définissent les bords d'une section transversale polygonale, et les trois poutres (2, 4, 6) sont reliées les unes aux autres par un pont de liaison (16) réalisé en un matériau synthétique.
PCT/IN2012/000690 2012-10-18 2012-10-18 Structure de renfort comprenant une pluralité de poutres Ceased WO2014061027A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112012007028.3T DE112012007028T5 (de) 2012-10-18 2012-10-18 Verstärkungsstruktur mit einer Vielzahl von Trägern
PCT/IN2012/000690 WO2014061027A1 (fr) 2012-10-18 2012-10-18 Structure de renfort comprenant une pluralité de poutres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IN2012/000690 WO2014061027A1 (fr) 2012-10-18 2012-10-18 Structure de renfort comprenant une pluralité de poutres

Publications (1)

Publication Number Publication Date
WO2014061027A1 true WO2014061027A1 (fr) 2014-04-24

Family

ID=50487648

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2012/000690 Ceased WO2014061027A1 (fr) 2012-10-18 2012-10-18 Structure de renfort comprenant une pluralité de poutres

Country Status (2)

Country Link
DE (1) DE112012007028T5 (fr)
WO (1) WO2014061027A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119872701A (zh) * 2025-03-20 2025-04-25 常州市迪伯特新能源科技有限公司 一种结构稳定的新能源汽车仪表板铝合金骨架

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4671536A (en) * 1984-12-21 1987-06-09 Mazda Motor Corporation Steering column support structure for a vehicle steering mechanism
US4682788A (en) * 1984-12-21 1987-07-28 Mazda Motor Corporation Steering column support structure for a vehicle steering mechanism
EP1035004A1 (fr) * 1999-03-05 2000-09-13 Ecia Industrie Agencement d'une colonne de direction dans un habitacle de véhicule automobile et véhicule correspondant
US6203092B1 (en) * 1997-12-01 2001-03-20 Moriroku Kabushiki Kaisha Assembly of interior parts at front portion of automobile
US20040178652A1 (en) * 2003-03-10 2004-09-16 Takahiro Yoshida Reinforcing structure for automotive vehicles
EP1655209A1 (fr) * 2004-11-05 2006-05-10 Alcan Technology & Management Ltd. Poutre de support de tableau de bord
EP2125496A1 (fr) * 2007-02-21 2009-12-02 Faurecia Interieur Industrie Ensemble de structures de planches de bord, sous-ensemble d'une telle structure et installation pour sa fabrication

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4671536A (en) * 1984-12-21 1987-06-09 Mazda Motor Corporation Steering column support structure for a vehicle steering mechanism
US4682788A (en) * 1984-12-21 1987-07-28 Mazda Motor Corporation Steering column support structure for a vehicle steering mechanism
US6203092B1 (en) * 1997-12-01 2001-03-20 Moriroku Kabushiki Kaisha Assembly of interior parts at front portion of automobile
EP1035004A1 (fr) * 1999-03-05 2000-09-13 Ecia Industrie Agencement d'une colonne de direction dans un habitacle de véhicule automobile et véhicule correspondant
US20040178652A1 (en) * 2003-03-10 2004-09-16 Takahiro Yoshida Reinforcing structure for automotive vehicles
EP1655209A1 (fr) * 2004-11-05 2006-05-10 Alcan Technology & Management Ltd. Poutre de support de tableau de bord
EP2125496A1 (fr) * 2007-02-21 2009-12-02 Faurecia Interieur Industrie Ensemble de structures de planches de bord, sous-ensemble d'une telle structure et installation pour sa fabrication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119872701A (zh) * 2025-03-20 2025-04-25 常州市迪伯特新能源科技有限公司 一种结构稳定的新能源汽车仪表板铝合金骨架

Also Published As

Publication number Publication date
DE112012007028T5 (de) 2015-07-16

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