WO2020021023A1 - Châssis de siège de véhicule comprenant un élément tubulaire fabriqué à partir d'un matériau composite renforcé par des fibres - Google Patents

Châssis de siège de véhicule comprenant un élément tubulaire fabriqué à partir d'un matériau composite renforcé par des fibres Download PDF

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Publication number
WO2020021023A1
WO2020021023A1 PCT/EP2019/070065 EP2019070065W WO2020021023A1 WO 2020021023 A1 WO2020021023 A1 WO 2020021023A1 EP 2019070065 W EP2019070065 W EP 2019070065W WO 2020021023 A1 WO2020021023 A1 WO 2020021023A1
Authority
WO
WIPO (PCT)
Prior art keywords
assembly
vehicle seat
seat frame
fiber
layer
Prior art date
Application number
PCT/EP2019/070065
Other languages
German (de)
English (en)
Inventor
Andrea Bauersachs
Jochen Hofmann
Thomas Bittermann
Jascha VEIT
Sven Sinne
Original Assignee
Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg
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 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg filed Critical Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg
Publication of WO2020021023A1 publication Critical patent/WO2020021023A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/68—Seat frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/22—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure
    • B29C70/222—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure the structure being shaped to form a three dimensional configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/68—Seat frames
    • B60N2/686—Panel like structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3055—Cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/771—Seats

Definitions

  • the invention relates to an assembly of a vehicle seat frame according to the preamble of claim 1.
  • Such an assembly comprises a structural section of a seat part assembly for providing a seat for a vehicle occupant or a backrest part assembly connected to the seat part assembly.
  • a tubular element made of a fiber composite material and stiffening the structural section is arranged on the structural section and extends along a longitudinal axis.
  • a tubular element in the form of a cross tube extends between the frame parts of the backrest part, which has hitherto usually been made of steel and is used to provide sufficient rigidity and strength on the backrest part, in particular with a view to strength requirements in the event of a crash.
  • Such a steel tube is generally heavy and adds significantly to the overall weight of the vehicle seat.
  • Structural sections must be designed to absorb and derive such loads. It should be noted that loads on the seat frame vary widely locally, so that measures for absorbing and dissipating load forces and moments must be provided in particularly stressed locations.
  • a three-dimensional structure of a backrest of a motor vehicle which has an area made of plastic reinforced with undirected long fibers and an area made of plastic reinforced with multi-dimensionally oriented long fibers.
  • a shell of a seat back made of blown plastic is known, which is hollow and flat overall and has a tubular stiffening element, which is preferably made of metal, but possibly also of a composite material.
  • a cross member for a vehicle seat is known from DE 20 2014 004 095 U1, which comprises a tubular body and is designed as a hollow body.
  • the cross member comprises a plastic material.
  • the object of the present invention is to provide an assembly of a vehicle seat frame which enables a lightweight construction of a vehicle seat with favorable, targeted force dissipation in a load case.
  • the tubular element has a tubular body which has at least a first layer with a first fiber braid and a second layer with a second fiber braid. It is optionally provided that the fiber braids are each formed by a braided sleeve extending circumferentially around the longitudinal axis.
  • the tubular element is accordingly designed with its tubular body in multiple layers.
  • a first layer has a first fiber braid and a second layer has a second Braid on.
  • the fiber braids are each formed, for example, by intersecting fibers and overlap to form the tubular body.
  • the fiber braids of the different layers of the tubular body are each formed from a braided tube that extends circumferentially around the longitudinal axis.
  • the fiber braids thus each form a (circumferentially closed) tubular structure, the first fiber braid of the first layer being arranged on the inside of the tubular body and covered by the fiber braid of the second layer.
  • a fiber mesh of a third layer can in turn be arranged radially outside the fiber mesh of the second layer, which in turn can be surrounded by a fiber mesh of a fourth layer.
  • the fiber meshes in the form of the fencing hoses can be designed for a specific load (torsion, bending or tensile / compressive load), loads from different load directions being able to be absorbed and intercepted by superimposing the different fiber meshes.
  • An increased stiffness can be set locally via the fiber braids and a reduced stiffness elsewhere on the tubular element, so that, for example, a specific flexibility can also be specified on the tubular element.
  • the tubular element is closed at the circumference and surrounds a lumen.
  • the tubular element is thus hollow on the inside.
  • the tubular body, which surrounds the lumen circumferentially, is made here by the layers formed from braided fibers.
  • the fiber braids of the individual layers can have the same or different designs.
  • the tubular element has an essentially cylindrical shape with a circular cross section.
  • the tubular element thus extends longitudinally along a longitudinal axis and is (circular) cylindrical in shape.
  • the tubular element has a shape deviating from a cylindrical shape and in particular does not form a circular cross section.
  • the shape of the tubular element can differ from a circular shape in the circumferential direction and from a cylindrical shape along the longitudinal axis.
  • the tubular element can in principle be designed with any shape for the targeted absorption and derivation of forces and moments.
  • the tubular element extends transversely on the structural section, which is part of the backrest subassembly, for example.
  • the tubular element thus represents a cross tube which extends, for example, between frame parts, for example in the form of longitudinal spars of the structural section which extend transversely to the longitudinal axis.
  • the tubular element thus connects different frame parts to one another and stiffens the frame parts against one another.
  • the tubular body of the tubular element is formed by several layers.
  • the layers are preferably arranged radially one above the other in such a way that the first layer represents the radially innermost layer and the second layer is arranged radially outside the first layer.
  • the second layer thus covers the first layer on its outside at least in sections.
  • the tubular body can have a third layer, which is arranged, for example, radially outside the second layer. Further layers can be arranged radially outside the third layer.
  • the tubular body is thus formed by three (or more) layers arranged one above the other, the number of layers preferably being adapted to the strength to be provided on the tubular body (locally or overall).
  • the tubular body can be formed, for example, from up to ten layers, each with a fiber braid. If necessary, even more layers are conceivable.
  • the layers each have a fiber mesh, the fiber meshes of the layers being arranged one above the other to form a multi-layer structure.
  • the fiber braids are formed, for example, from a braided hybrid yarn or embedded in a matrix made of a thermoplastic / thermosetting plastic material, so that a multilayer structure of a tubular element produced from a matrix-fiber composite results. If the fiber braids are formed from a braided hybrid yarn, the fiber braids can be cohesively connected to one another, for example, by heating with partial melting. When embedded in a matrix, the fiber braids of the individual layers are arranged, for example, one above the other and then polymerized together and thus embedded in a polymer matrix.
  • the fiber braids are preferably each formed by intersecting fibers in the manner of a fiber fabric or fiber fabric. Different oriented fibers of each fiber mesh extend, for example, at an angle (for example below an angle between 20 ° and 90 °) or approximately perpendicular to each other.
  • the fiber braids are preferably rolled up in a tubular manner and thus represent braided sleeves made of intersecting fibers, which are arranged in layers to form the tubular body one above the other.
  • the fibers of the fiber braids are formed by continuous fibers.
  • Continuous fibers are usually understood to mean fibers with a long length, for example greater than 50 mm.
  • Such continuous fibers contribute to a high strength of the tubular element and can be made from different fiber materials such as glass, aramid or carbon.
  • the different positions of the tubular body can differ from one another, in particular in the formation of the fiber braids.
  • the fiber braids of the different layers can be of different lengths.
  • the fiber braids which are in particular tubular, thus only overlap (viewed axially along the longitudinal axis) in sections, so that in one length section the tubular body can be formed, for example, only in one layer, in another section in two layers and in another section in three layers. Additional layers with a different axial length or also with a length that corresponds to the axial length of another layer may be present.
  • the first layer with its first fiber braid can be made axially short and, for example, be axially centered on the tubular element in order to provide increased rigidity in the center of the tubular element.
  • the second and third layers can, for example, be longer than the first layer and encompass the first layer and project axially beyond them.
  • the first layer is axially long, while the second and possibly a third layer are shorter than the first layer.
  • the third layer can have the axially shortest length, for example, and can be arranged, for example, in the center of the tubular element, so that increased rigidity is again provided in the center of the tubular element.
  • the axially shortest layer (for example the first layer or the third layer) can also be arranged at one end of the tubular element, so that increased rigidity is provided at this end.
  • the fiber braids of the layers with different axial lengths differ in the orientation of their fibers.
  • adjacent fiber braids can be arranged in relation to one another in such a way that an oblique angle between the fibers of the fiber braids results, the angle being chosen so that a high load capacity is set on the tubular element in one or more preferred load directions.
  • the angle of the fiber braids can be maintained in such a way that a desired angle between the fiber braids is established in the final state, that is to say when the tubular element is shaped.
  • the fiber braids can also differ in their fiber density, their fiber material and also the strength (i.e. in diameter) of the fibers.
  • one or more layers can have elongated stiffening fibers in addition to the respective fiber braid, which additionally reinforce the respective fiber braid along the longitudinal direction of the stiffening fibers.
  • Different layers can differ in the arrangement of the stiffening fibers.
  • different layers of stiffening fibers can have different orientations or different densities.
  • the stiffening fibers of different layers differ in their material.
  • the stiffening fibers can be made of glass, aramid or carbon.
  • additional structures for locally reinforcing the tubular body can be attached to the outside (or possibly also inside) of the tubular body.
  • the outside of the tubular body can have an additional band structure with elongated fibers, which is laminated to the tubular body or laminated into the tubular body.
  • the tube element can be reinforced, for example, at its ends or along its longitudinal direction in order to enable direction-dependent strength to absorb forces or moments.
  • the tubular body has at least one band structure for locally reinforcing the tubular body on an outer circumferential surface facing outward.
  • such a band structure can be wound circumferentially around the longitudinal axis and thus extend outside around an outer circumferential surface of the tubular body.
  • a band structure can be extended longitudinally on the outer circumferential surface of the tubular body.
  • the band structure can have a spiral shape that extends spirally around the outer circumferential surface of the tubular body. Fibers of the band structure are each directed along the longitudinal direction of the band structure.
  • the tubular element can have further stiffening structures, for example in the form of a circumferential web, which is formed from short braided hoses and is, for example, formed in the center of the tubular body, or one or more strut elements arranged inside the tubular body, which are diametrical (transverse to the longitudinal axis ) extend inside the tubular body and thus stiffen the tubular element inside, in particular against a load transverse to the longitudinal axis.
  • stiffening structures for example in the form of a circumferential web, which is formed from short braided hoses and is, for example, formed in the center of the tubular body, or one or more strut elements arranged inside the tubular body, which are diametrical (transverse to the longitudinal axis ) extend inside the tubular body and thus stiffen the tubular element inside, in particular against a load transverse to the longitudinal axis.
  • Fig. 1 is a view of a seat frame of a vehicle seat according to the state of the
  • Fig. 2 is a view of a seat frame of a vehicle seat with one
  • Fig. 3 is a separate view of the tubular element;
  • 4A is a view of an exemplary embodiment of a tubular element which has three different layers with different fiber braids;
  • FIG. 4B shows a longitudinal sectional view through the tubular element according to FIG. 4A;
  • 5A shows a view of another exemplary embodiment of a tubular element which has three different layers with different fiber braids
  • FIG. 5B shows a longitudinal sectional view through the tubular element according to FIG. 5A;
  • 6A is a view of yet another embodiment of a
  • Pipe element which has three different layers with different fiber braids
  • FIG. 6B shows a longitudinal sectional view through the tubular element according to FIG. 6A;
  • FIG. 7A is a view of yet another embodiment of a
  • Pipe element which has three different layers with different fiber braids
  • FIG. 7B shows a longitudinal sectional view through the tubular element according to FIG. 7A;
  • Fig. 8 is a view of yet another embodiment of a
  • Pipe element which has three different layers with different fiber braids
  • FIG. 9A is a view of an embodiment of a tubular member having a reinforcement locally formed by a band structure
  • FIG. 9B is a longitudinal sectional view through the tubular element according to FIG. 9A;
  • 10A is a view of an embodiment of a tubular element with a different band structure
  • FIG. 10B shows a longitudinal sectional view through the tubular element according to FIG. 10A;
  • Figure 1 1 A is a view of another embodiment of a tubular element with a band structure.
  • Fig. 1 1 B is a longitudinal sectional view through the tubular element according to Fig. 1 1 A;
  • 12A is a view of a tubular member having a shape other than a cylindrical shape
  • Fig. 12B is a sectional view taken along line A-A of Fig. 12A;
  • 12C is a sectional view taken along line B-B of FIG. 12A.
  • a vehicle seat 1 shown by way of example in FIG. 1 comprises a seat part assembly 10 and a backrest part assembly 1 1 arranged pivotably about a pivot axis D via a fitting arrangement 13 Longitudinal adjustment device 12 connected to a vehicle floor.
  • the backrest part assembly 11 can be adjusted by pivoting about the pivot axis D in its inclined position to the seat part assembly 10 in order to set a comfortable seating position for a vehicle occupant or to bring the vehicle seat 1 into a flat position, for example, to provide additional storage space in the vehicle, for example ,
  • the vehicle seat 1 can, for example, be part of a rear seat arrangement of a vehicle (in a second or third row of seats in a vehicle). It is also conceivable and possible that such a vehicle seat forms a front seat in a vehicle.
  • the backrest subassembly 11 has a structural section 110 on which a cushion is usually arranged to provide a backrest.
  • a tubular element 2 in the form of a transverse tube is arranged on the structural section 110, which connects frame parts 11, 1 12 in the form of longitudinal spars which extend essentially perpendicular to the pivot axis D and stiffens the structural section 110 in such a way that the structural section 110 the backrest part assembly 1 1 acting load forces and moments can be absorbed and derived in the direction of the seat part assembly 10.
  • Such a tubular element 2 in the form of a cross tube has hitherto usually been designed as a steel tube in order to provide sufficient rigidity on the vehicle seat 1 and in particular on the backrest part assembly 11. However, this entails that the weight of the vehicle seat 1 is significantly increased by the tubular element 2.
  • a tubular element 2 is therefore provided, which is made of a fiber composite material and is shown in a separate illustration in FIG. 3.
  • the tubular element 2 extends longitudinally along a longitudinal axis L and has a tubular body 21 which surrounds an inner lumen 20 and is thus hollow. Because the tubular body 21 is made of a fiber composite material, the tubular element 2 can be made lightweight, so that the weight of the vehicle seat 1 can be reduced overall.
  • the tubular element 2 is of multilayer design with its tubular body 21.
  • the tubular body 21 is formed by different layers which have different, overlapping fiber braids.
  • a stiffness can be specifically set on the tubular element 2, which may vary locally and depending on the direction, for the targeted absorption of forces and moments.
  • the tubular body 21 of the tubular element 2 has three layers 210, 21 1, 212 with different fiber battles M1, M2, M3.
  • the fiber braids M1, M2, M3 are each formed by intersecting fibers F and are superimposed such that a first, innermost fiber braid M1 of a first layer 210 radially within a second fiber braid M2 of a second layer 21 1 and the second fiber braid M2 of the second layer 21 1 is in turn arranged radially within a third fiber mesh M3 of a third layer 212.
  • the fiber braids M1, M2, M3 differ in the one shown
  • Embodiment in its axial length such that the outermost, third layer 212 is axially shorter than the second layer 21 1 and this in turn is axially shorter than the first layer 210.
  • the third layer 212 with its third fiber braid M3 is arranged centrally on the tubular element 2, and the second layer 11 is again centered on the third layer 212, so that the tubular element 2 is reinforced in the middle.
  • reinforcement is provided at one end 22 of the tubular element 2.
  • the axially shortest, third layer 212 is arranged with its third fiber braid M3 at the end 22 for this purpose.
  • the second layer 21 1 also extends up to the end 22, but in the direction of the other end 23 beyond the third layer 212, but is axially shorter than the first layer 210, which extends as far as the end 23 ,
  • the tubular element 2 is thus specifically reinforced by superimposing the fiber braids M1, M2, M3 of the different layers 210, 21 1, 212.
  • a targeted flexibility in the area of the end 23 can be provided in this way for energy management in the event of a crash (in the sense of a deformation element).
  • the tubular element 2 is again reinforced in the center, in which case the innermost layer 210 is the shortest axially and is arranged in the center.
  • the second layer 21 1 is axially longer than the first layer 210, but shorter than the third layer 212.
  • reinforcement is thus provided in the center of the tube element 2 .
  • targeted compliance can be provided on both ends at the ends for energy management in the event of a crash (in the sense of a deformation element).
  • FIGS. 7A, 7B is similar in arrangement of the layers 210, 21 1, 212 to one another to the embodiment according to FIG. 1, wherein in this embodiment the inner layer 210 is formed by two braided sleeves, which are centrally located at an axial distance 213 from each other are arranged. In this way, a resilience can optionally be created centrally on the tubular body 21.
  • FIG. 8 is also the same as the embodiment according to FIGS. 4A, 4B, in which case additional stiffening fibers 214 in the form of continuous fibers elongated along a stiffening direction V are embedded in the fiber mesh M2 of the second layer 21 1.
  • the second layer 21 1 is thus stiffened by additional embedding of stiffening fibers 214, so that an additional, direction-dependent stiffness is provided on the tubular element 2 along the direction of extension V of the stiffening fibers 214.
  • the fiber braids M1, M2, M3 for forming the multilayer structure are formed from braided sleeves that are overlap in sections or along the entire length of the tubular element 2.
  • the orientation of the fibers F of the different fiber braids M1, M2, M3 can differ here, so that the fibers F of different fiber braids M1, M2, M3 are aligned, for example, at an oblique angle to one another. In this way, a predetermined directional dependency for absorbing forces and moments on the tubular element 2 can be set.
  • the fiber braids M1, M2, M3 can differ in the density and / or strength of their fibers F. Additionally or alternatively, the fibers F of the fiber braids M1, M2, M3 can also be made of different materials, for example glass, aramid or carbon.
  • the fibers F of the fiber braids M1, M2, M3 can be formed, for example, by continuous fibers, that is to say particularly long fibers with a length preferably of (significantly) greater than 50 mm.
  • the fiber braids M1, M2, M3 are made, for example, from hybrid yarn, ie a mixture of glass and polymer fibers.
  • the fiber braids M1, M2, M3 placed one above the other in the form of the braided hoses can in this case be heated and thereby partially melted, so that a cohesive connection between the braided hoses results.
  • the fiber braids M1, M2, M3 can be braided from glass, carbon or aramid fibers, for example.
  • the fiber braids M1, M2, M3 are placed one above the other to produce the tubular body 21 and then polymerized together (in situ), so that an integral, one-piece structural component results.
  • additional shapes in the form of band structures 215 are arranged on the outside on an outer circumferential surface 216 (corresponding to the outside of the third layer 212), which have a fiber structure B along the ends 22, 23 of the tubular element 2 a circumferential direction U and thus provide additional reinforcement at the ends 22, 23.
  • the fibers of the fiber structure B of the band structures 215 here extend along the circumferential direction U, so that a special reinforcement along the circumferential direction U (for example against expansion) is brought about at the ends 22, 23.
  • a plurality of layers 210, 21 1, 212 are superimposed, with additional tape structures 215 being formed outside the outermost layer 212, which are laminated, for example, onto the outer circumferential surface 216 or into the fiber-matrix structure of the layers 210, 21 1, 212 are laminated.
  • tape structures 215 are shaped on the outside of the multilayer tubular body 21 in the form of tape layers.
  • the band structures 215 are elongated parallel to the longitudinal axis L and in turn are formed by elongated fiber structures B.
  • a special reinforcement along the longitudinal axis L is provided on the tubular element 2.
  • a band structure 215 extends spirally around the outer circumferential surface 216 of the tubular body 21.
  • the band structure 215 is formed by a fiber structure B with elongated fibers following the spiral shape.
  • the tubular body 21 of the tubular element 2 has an essentially cylindrical shape with a circular cross section.
  • the outer shape of the tubular element 2 in the exemplary embodiment shown in FIGS. 12A, 12B, 12C deviates from a cylindrical shape and varies along the longitudinal axis L as well as in the circumferential direction about the longitudinal axis L.
  • the shape of the tubular element 2 can be targeted to the Attachment to the structural section 110 can be adapted, for example, to the backrest sub-assembly 11, wherein structures can be created via flattened surface sections, to which attachments, for example adapter parts for connection to fittings 13, can be attached.
  • the (direction-dependent) stiffness can also be set via the shape of the tubular element 2, so that torsional moments and bending loads can be absorbed in a targeted manner on the tubular element 2.
  • a tubular element of the type described can in particular be used not only on a backrest part assembly, but also, for example, on the seat part assembly of a vehicle seat.
  • structural sections can be stiffened via tubular elements of the type described, the tubular element being able to extend transversely (along a vehicle transverse direction) or also perpendicularly (in particular transversely to a pivot axis of the backrest subassembly).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Laminated Bodies (AREA)
  • Seats For Vehicles (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

Module d'un châssis de siège de véhicule comprenant : une partie structurale (110) d'un module élément d'assise (10) destiné à fournir une surface d'assise (100) à un passager de véhicule ou d'un module élément de dossier relié au module élément d'assise (10), et un élément tubulaire (2), fabriqué à partir d'un matériau composite renforcé par des fibres, s'étendant le long d'un premier axe longitudinal (L), disposé sur la partie structurale (110) et servant à rigidifier cette dernière. Selon l'invention, l'élément tubulaire (2) comporte un corps tubulaire (21) qui présente au moins une première couche (210) pourvue d'un premier treillis de fibres (M1) et une seconde couche (211) pourvue d'un deuxième treillis de fibres (M2), les treillis de fibres (M1, M2) étant formés chacun par un tuyau souple tressé s'étendant périphériquement autour de l'axe longitudinal (L). De cette manière, on dispose d'un module d'un châssis de siège de véhicule qui permet une construction légère d'un siège de véhicule, assurant une dérivation de force ciblée et favorable en cas de sollicitation.
PCT/EP2019/070065 2018-07-25 2019-07-25 Châssis de siège de véhicule comprenant un élément tubulaire fabriqué à partir d'un matériau composite renforcé par des fibres WO2020021023A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018212442.6A DE102018212442A1 (de) 2018-07-25 2018-07-25 Fahrzeugsitzgestell mit einem aus einem Faserverbundwerkstoff gefertigten Rohrelement
DE102018212442.6 2018-07-25

Publications (1)

Publication Number Publication Date
WO2020021023A1 true WO2020021023A1 (fr) 2020-01-30

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Family Applications (2)

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PCT/EP2019/070085 WO2020021030A1 (fr) 2018-07-25 2019-07-25 Châssis de siège de véhicule comprenant un élément tubulaire fabriqué à partir d'un matériau composite renforcé par des fibres
PCT/EP2019/070065 WO2020021023A1 (fr) 2018-07-25 2019-07-25 Châssis de siège de véhicule comprenant un élément tubulaire fabriqué à partir d'un matériau composite renforcé par des fibres

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DE102018212442A1 (de) 2020-01-30
CN112584999A (zh) 2021-03-30
WO2020021030A1 (fr) 2020-01-30
KR20210032410A (ko) 2021-03-24

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