WO2020109193A1 - Élément structural pour véhicule - Google Patents

Élément structural pour véhicule Download PDF

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Publication number
WO2020109193A1
WO2020109193A1 PCT/EP2019/082339 EP2019082339W WO2020109193A1 WO 2020109193 A1 WO2020109193 A1 WO 2020109193A1 EP 2019082339 W EP2019082339 W EP 2019082339W WO 2020109193 A1 WO2020109193 A1 WO 2020109193A1
Authority
WO
WIPO (PCT)
Prior art keywords
structural element
composite
vehicle
structural
layers
Prior art date
Application number
PCT/EP2019/082339
Other languages
German (de)
English (en)
Inventor
Robert Thomas
Fabian FISCHER
Thomas Grosse
Thomas Mertens
Original Assignee
Volkswagen Aktiengesellschaft
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 Volkswagen Aktiengesellschaft filed Critical Volkswagen Aktiengesellschaft
Priority to CN201980077932.7A priority Critical patent/CN113056624B/zh
Publication of WO2020109193A1 publication Critical patent/WO2020109193A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/10—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/08—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • 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
    • B62D29/005—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material preformed metal and synthetic material elements being joined together, e.g. by adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B32B2260/023—Two or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/748—Releasability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

Definitions

  • the invention relates to a method for producing a structural element for a vehicle according to the preamble of patent claim 1, a structural element for a vehicle according to the preamble of patent claim 6 and a vehicle according to the preamble of patent claim 10.
  • Structural elements in the vehicle sector are exposed to a variety of loads. This is especially true in the event of an accident. Structural elements such as beams in the form of sills, door crash tubes, B-pillars or side members are particularly affected. Structural elements of this type are therefore conventionally very solid, usually made of metal.
  • DE 10 2012 015 919 A1 discloses a battery housing, the housing base of which is made from a plurality of fiber-reinforced plastic layers in a sandwich construction.
  • DE 10 2014 207 483 A1 discloses a structural component for motor vehicles with a sandwich structure that has a core and two cover layers.
  • DE 10 2016 222 435 A1 also discloses a sandwich element which is used for a supporting structure.
  • the invention is based on the object of creating a new structural element which can be flexibly adapted to different load requirements, has a low weight and at the same time is simple to manufacture.
  • a first aspect of the invention relates to a method for producing a structural element for a vehicle, comprising the steps: introducing a layer of natural material between further layers and joining the layers to form a composite.
  • the composite is reshaped, so that the reshaped composite has a spiral cross section at least in sections.
  • the layers can be joined, for example, by pressing or gluing and optionally hardening. It also follows that the layers are out
  • Natural material and other layers do not necessarily have to adjoin each other directly.
  • a layer that has not yet been shaped for example a layer of adhesive, can be located between the further layers and the layer made of natural material.
  • further layers made of, for example, different natural materials,
  • Plastics, fiber composite plastics and metallic materials can be provided.
  • at least two further layers should be provided, which cover at least one layer made of natural material from both sides.
  • Layers that are provided as continuous material are preferably used. These are expediently separated after joining, so that the composite is made up for a longer period.
  • the joined composite is preferably formed by bending, more preferably using a roll forming system.
  • the structural element produced can, in other words,
  • the composite comprising the layer of natural material with the other layers as cover layers, is rolled up, for example, about a longitudinal axis, so that the spiral-like cross section results.
  • Wood is the preferred natural material. Wood is an inexpensive, renewable and light material. The spiral cross-section can be produced from wood with particularly little effort, wood in this form also being able to absorb particularly high forces. However, other natural materials with corresponding properties can also be used.
  • the spiral of the spiral-like cross-section does not necessarily have to be round, but can also be triangular, square or polygonal and thus be adapted, for example, to a surrounding geometry to which it is to be attached, for example.
  • the method according to the invention is very simple to carry out and also for one
  • the structural element that can be produced can easily be designed and manufactured to meet a wide variety of requirements.
  • the method according to the invention is particularly suitable for producing tubular structural elements.
  • the responsible specialist chooses the material for the other layers taking into account
  • the further layers comprise a metallic material.
  • Metallic materials are characterized, for example, by the fact that they can also be shaped particularly well with high resilience and are then dimensionally stable, which is particularly advantageous in the production of the spiral cross section according to the invention.
  • the layer of natural material is arranged between the further layers, preferably of metallic material, directly adjacent to these.
  • the further layers are laminated directly onto the layer made of natural material, wherein a layer of adhesive can optionally be provided in between.
  • the formed composite is combined with a structural part which forms an outer surface of the structural element.
  • the structural element can particularly advantageously be inserted into a tubular structural part. However, it can also be arranged, for example, between one or more sheets, which are preferably connected to one another. In other words, the formed composite thus forms a core of the structural element, which can be surrounded by further structural parts.
  • the structural element produced in the method according to the invention is therefore not of conventional structural elements
  • the formed composite is subjected to a further forming step, the spiral-like cross section being deformed at least in sections.
  • the cigar shape can, for example, be flattened in sections transversely to its longitudinal axis. This deformation is preferably used to manufacture
  • the flattening can only take place in the end regions of the cigar, so that, for example, screwing points to another structural part or other part of a vehicle are created.
  • Such interfaces are especially designed to remove the energy to be absorbed in the event of an accident.
  • the cigar can be completely or only partially flattened with regard to the degree of compression.
  • the cigar can only be flattened in sections along its longitudinal axis, for example in one end region, in several end regions, in a middle region or in other regions which appear advantageous to the person skilled in the art in the production of such interfaces.
  • the flattening can also vary with regard to the degree of compression along the longitudinal axis, so that, for example, a cylindrical cigar shape can also change into a tapering cigar shape or even a cone shape. If, as described above, the formed composite is arranged, for example, between further structural parts, these can also be formed together in the further forming step.
  • the force absorption and the energy dissipation can thus be set independently of the direction of action and can thus be optimized particularly advantageously.
  • the further layers comprise a steel sheet and the layer comprises natural veneer.
  • the steel sheet is preferably made thin, and the person skilled in the art can independently set a lower limit for the sheet thickness using the load capacity of the layer made of natural material.
  • the wood veneer is particularly cheap to use and easy to work with.
  • Adhesive is preferably applied between the layers, followed by pressing and curing or also partial curing with post-curing in
  • the composite is preferably reshaped.
  • a second aspect of the invention relates to a structural element for a vehicle, comprising: a layer made of natural material, which is arranged between further layers and joined to form a composite.
  • the composite is reshaped, so that the reshaped composite has a spiral cross section, at least in sections.
  • the structural element according to the invention can in particular be a
  • the formed composite is combined with a structural part which forms an outer surface of the structural element.
  • the spiral cross-section of the formed composite is deformed at least in sections.
  • the structural element comprises a sill, a pillar or another supporting structure for a vehicle.
  • a third aspect of the invention relates to a vehicle comprising a structural element according to the invention as described above or comprising a
  • Structural element produced in a method according to the invention according to the
  • the vehicle can preferably be a motor vehicle.
  • Figure 1 shows the sequence of a method according to the invention
  • FIG. 2 shows a structural element according to the invention in a cross-sectional view
  • FIG. 3 shows a further structural element according to the invention.
  • FIG. 1 shows the sequence of a method according to the invention for producing a structural element 10 for a vehicle 12 (compare FIG. 4).
  • the method shown in FIG. 1 begins with a layer of natural material 14 being introduced between two further layers 16 in this embodiment, which in this embodiment consist of metallic material.
  • the layer made of natural material 14 is wood veneer 18.
  • the other layers 16 made of metallic material are thin steel sheets 20 in the present case.
  • the wood veneer 18 and the steel sheets 20 are stored and not shown here as continuous material delivered in a continuous process. In Figure 1, this is done in accordance with the coordinate system shown in the Y direction.
  • a rolling installation 22 is provided for introducing the wood veneer 18 between the steel sheets 20. Before the wood veneer 18 is inserted between the steel sheets 20, it is coated on both sides with an adhesive 24. In this step of the process, the adhesive 24 has not yet hardened.
  • Wood veneer 18 to form a composite 26.
  • the steel sheets 20 and the wood veneer 18 pass through a press tool 28, which may be tempered.
  • the layers 14, 16 are pressed into the composite 26 and the adhesive 24 cures.
  • the composite 26 After the composite 26 has left the pressing tool 28 in the Y direction, the composite 26 is cut off with a cutting tool 30.
  • This cutting is expediently carried out only after the forming step of the composite 26 described below.
  • the process closes this purpose can also be designed quasi-continuously.
  • the shaping step mentioned takes place in the present case with the aid of a roll-forming machine 32.
  • the assembly 26 runs into the roll-forming machine 32 in the Y direction and is then, in the present case counterclockwise, wound around its longitudinal axis L.
  • the longitudinal axis L is aligned parallel to the axis X of the coordinate system shown.
  • a reshaped composite 34 is produced which has a spiral-like cross section 36.
  • FIG. 2 shows a structural element 10 according to the invention in a cross-sectional view.
  • FIG. 2 the structural element 10 according to the invention is initially shown after its production method according to the invention has been completed.
  • the coordinate systems contained in FIG. 2 correspond to those from FIG. 1.
  • a further embodiment of the structural element 10 is shown in the upper part of FIG. 2, the formed composite 34 being combined with further structural parts 38. As shown in the upper part of FIG. 2, the formed composite is sandwiched between the structural parts 38. The structural parts 38 form an outer surface 40 of the structural element 10.
  • the formed composite 34 in the present case, together with the further structural parts 38, can be subjected to a further forming step.
  • the spiral cross section 36 is flattened in the end region 42 and becomes part of an interface 44 for the assembly and force transmission of the structural element 10 to surrounding systems.
  • this further forming step takes place transversely to the longitudinal axis L and along the entire longitudinal axis L.
  • the structural parts 38 can preferably be connected to one another in the end regions 42.
  • FIG. 3 shows a further structural element 10 according to the invention
  • Structural element 10 is shown in an isometric view, and the marked section is shown in section A-A at the bottom right.
  • the structural element 10 is a sill 46, purely by way of example for the vehicle 12 shown in FIG. 4.
  • the internal structure of the sill 46 is shown in more detail in the sectional view.
  • the sill 46 comprises a further structural part 38 made of metal. This forms the outer surface 40 of the sill 46.
  • the deformed composite 34 is arranged on the inside or facing away from the outer surface 40.
  • the layer made of natural material 14 and the further layers 16 made of metallic material are only shown in simplified form here. It can be seen that the formed composite 34 is deformed transversely to its longitudinal axis L and follows the shape of the further structural part 38. In the end regions 42, the formed composite 34 is completely flattened and, together with the structural part 38, forms a mechanical interface 44 to the vehicle 12. If, for example, an accident-related force F acts from outside, the energy introduced by the formed composite 34 becomes one largely implemented in deformation work and otherwise derived into the vehicle 12 via the interface 44.
  • FIG. 4 finally shows the vehicle 12 according to the invention, which is an example of a motor vehicle 48.
  • the structural element 10 according to the invention is used as the sill 46 in the motor vehicle 48. But it can also be used for other load-bearing purposes
  • Structures are used, for example also for a B-pillar 50.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un élément structural (10) destiné à un véhicule (12). Selon l'invention, l'élément structural (10) a une forme de cigare dans laquelle un composite (26), comprenant une couche en matière naturelle (14) ainsi que d'autres couches (16) en matière métallique utilisées comme couches de recouvrement, est enroulé par exemple sur un axe longitudinal (L) de façon à obtenir une section en spirale (36).
PCT/EP2019/082339 2018-11-26 2019-11-25 Élément structural pour véhicule WO2020109193A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201980077932.7A CN113056624B (zh) 2018-11-26 2019-11-25 用于车辆的结构元件

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018220214.1A DE102018220214A1 (de) 2018-11-26 2018-11-26 Strukturelement für ein Fahrzeug
DE102018220214.1 2018-11-26

Publications (1)

Publication Number Publication Date
WO2020109193A1 true WO2020109193A1 (fr) 2020-06-04

Family

ID=68696418

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/082339 WO2020109193A1 (fr) 2018-11-26 2019-11-25 Élément structural pour véhicule

Country Status (3)

Country Link
CN (1) CN113056624B (fr)
DE (1) DE102018220214A1 (fr)
WO (1) WO2020109193A1 (fr)

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FR1379737A (fr) * 1963-10-15 1964-11-27 Amortisseur de choc, plus particulièrement pour charges parachutées, et son procédé de fabrication
EP1348884A1 (fr) * 2002-03-29 2003-10-01 Hexcel Corporation Absorbeur d'énergie formable utilisant un ruban ondulé stabilisé avec mousse
DE102012015919A1 (de) 2012-08-10 2014-02-13 Daimler Ag Batteriegehäuse für einen Kraftwagen und Verfahren zum Herstellen eines Batteriegehäuses
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DE102016222435A1 (de) 2016-11-15 2018-05-17 Deutsches Zentrum für Luft- und Raumfahrt e.V. Sandwichelement, tragende Struktur und Fahrzeug

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Publication number Publication date
CN113056624B (zh) 2023-07-18
DE102018220214A1 (de) 2020-05-28
CN113056624A (zh) 2021-06-29

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