WO2022022944A1 - Élément pour véhicule automobile - Google Patents

Élément pour véhicule automobile Download PDF

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Publication number
WO2022022944A1
WO2022022944A1 PCT/EP2021/068281 EP2021068281W WO2022022944A1 WO 2022022944 A1 WO2022022944 A1 WO 2022022944A1 EP 2021068281 W EP2021068281 W EP 2021068281W WO 2022022944 A1 WO2022022944 A1 WO 2022022944A1
Authority
WO
WIPO (PCT)
Prior art keywords
section
carrier
cross
motor vehicle
support
Prior art date
Application number
PCT/EP2021/068281
Other languages
German (de)
English (en)
Inventor
Michael Hainzinger
Juergen LESCHHORN
Nermin Kecalevic
Stefan Schwingenschloegel
Johannes Hasselbach
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke Aktiengesellschaft filed Critical Bayerische Motoren Werke Aktiengesellschaft
Publication of WO2022022944A1 publication Critical patent/WO2022022944A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • 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

Definitions

  • the present invention relates to a support for a motor vehicle, in particular a cross member or longitudinal member.
  • Cross members and side members in motor vehicles usually form part of both the vehicle frame and the body. Such carriers influence the stability of a motor vehicle and usually also serve to reduce crash energy in the event of a crash.
  • DE 102011 077810 A1 and DE 102011 088 111 A1 each describe a support for a body of a motor vehicle, which connects a side skirt to a rear side member.
  • the carrier according to the invention for a motor vehicle in particular a cross member or longitudinal member, has a plurality of side faces which meet at respective longitudinal edges which run at least substantially straight and form a polygonal hollow profile cross section.
  • the hollow profile cross section has an initial cross section and an end cross section on opposite end faces of the carrier, which differ from one another in terms of their shape and/or arrangement transverse to the main extension direction of the carrier.
  • the hollow profile cross section transitions from the start cross section to the end cross section along the main extension direction of the carrier. At least one of the side surfaces of the carrier is inclined in a partial area in relation to the initial cross section.
  • “Inclined” can be understood to mean that the side surface is in an inclined position in relation to a front edge of the carrier, which forms a boundary of the initial cross section.
  • the side surface can also be bent or curved inwards, at least in certain areas, in relation to the initial cross section, in particular in relation to said front edge.
  • the side surface is free of kinks or other discontinuous changes in geometry.
  • the side surface connects a respective front edge or rear edge of the start or end cross section, in particular on one side of the carrier, with this front edge or rear edge forming a boundary of the start or end cross section.
  • the cross section of the carrier ie the hollow profile cross section, thus changes along the main direction of extent of the carrier and/or shifts at least in a direction running transversely to the main direction of extent.
  • the latter can mean, for example, that the initial cross section and the final cross section are offset from one another in the vertical and/or transverse direction.
  • the invention is based in particular on the knowledge that, for optimal load transfer by carriers, straight carrier courses without disruptions to the longitudinal edges are necessary.
  • the longitudinal edges are to be understood as meaning those edges of the carrier at which the side surfaces of the carrier meet, which extend in the longitudinal direction, ie in the direction of the main extension of the carrier.
  • the longitudinal edges run at least essentially straight. This does not mean that all of the longitudinal edges run parallel to the main direction of extension.
  • the longitudinal edges of the carrier, where the side surfaces meet run completely straight. At least part of the side surfaces of the carrier are twisted, this being realized while the straight courses of the longitudinal edges are largely retained.
  • the hollow profile cross section changes along the main direction of extent of the carrier from the initial cross section to the end cross section and/or shifts at least in a direction running transversely to the main direction of extent, it is possible for at least one of the side surfaces to be inclined in a partial area in relation to the initial cross section.
  • Other components in the motor vehicle which would collide with the cross section of the hollow profile and thus a straight carrier, can be installed together with the carrier according to the invention without any problems.
  • the side faces of the carrier can therefore be smooth, for example.
  • the load level of the carrier according to the invention does not have to be compensated for by increasing the wall thickness and/or material quality.
  • a possible embodiment of the invention provides that the hollow profile cross-section is square, with the initial cross-section being rectangular and the final cross-section being a parallelogram with angles not equal to 90°.
  • the rectangular initial cross section thus gradually changes along the main extension direction of the carrier into the final cross section, which forms a parallelogram with angles not equal to 90°.
  • the side surfaces that form the long sides of the carrier can tilt and/or warp as the distance from the initial rectangular cross section increases, with the respective side surfaces of the carrier forming tops and bottoms being able to be designed without tilting or warping.
  • With the square design of the hollow profile cross section it is particularly easy, among other things, to provide connections for other components on the carrier.
  • a further possible embodiment of the invention provides that the carrier has a constant height. It is also possible for the carrier to have a constant width instead of a constant height. In both cases, attachment of further components to the carrier is facilitated, be it on the top and bottom with a constant height of the carrier or on the side with a constant width of the carrier.
  • two of the side surfaces which are arranged opposite one another and form an upper side and underside of the carrier, are arranged parallel to one another.
  • the other two side surfaces which form the respective longitudinal sides of the carrier cannot then be arranged parallel to one another, and are then inclined inwards or outwards relative to the initial cross-section. This makes it particularly easy to overcome bottlenecks in relation to neighboring components.
  • the side surfaces arranged parallel to one another, which form the top and bottom of the carrier can easily be used, for example, to connect a wide variety of components to the carrier.
  • the hollow profile cross-section has a section which, starting at the initial cross-section, has a constant cross-section for a predetermined length. Only after this section does the hollow profile cross-section change along the main extension direction of the carrier in terms of its shape, until it finally becomes end cross-section passes.
  • the section with the unchanging cross-section can thus be easily separated at different points.
  • the carrier as such can therefore always be produced in the same way, whereby--if this should be necessary--the carrier can be cut to different lengths in the region of the section with the unchanging cross-section. This enables a particularly cost-effective production of different length variants of the carrier.
  • a further possible embodiment of the invention provides that the carrier has two carrier halves which are connected to one another in the form of a shell construction to form the carrier.
  • the beam can be produced in a particularly simple manner, with the two beam halves being able to be produced prior to joining in such a way that said initial cross section and final cross section can then be realized and the hollow profile cross section transitions from the initial cross section to the final cross section along its main direction of extension. After connecting or joining the two carrier halves, it is then no longer necessary to deform the assembly of the carrier halves.
  • an alternative possible embodiment of the invention provides that the carrier is in one piece, in particular an internal high-pressure formed part or an extruded profile.
  • a preliminary carrier stage to be produced first as an internal high-pressure formed part or an extruded profile, which has a constant cross-section along the main direction of extension.
  • the finished beam can then be produced from the preliminary beam stage, for example by a forming process, in which the hollow profile cross section changes from the initial cross section to the final cross section along the main direction of extent of the beam.
  • no assembly or joining processes are necessary to produce the carrier. This can contribute to providing a particularly stable carrier.
  • the carrier is made from at least one metal sheet.
  • the carrier is also possible to manufacture the carrier from several metal sheets.
  • the wearer can Aluminum sheets or steel sheets are made, depending on what mechanical requirements are placed on the carrier.
  • a further possible embodiment of the invention provides that the carrier is designed for a front end area of the motor vehicle. Particularly in the area of motor vehicle engines, the packaging or installation space problems mentioned at the outset can often occur.
  • the described geometric configuration of the carrier makes it possible, for example in the engine compartment if the carrier is a side member or cross member for an engine, to solve packaging problems very easily without having to make compromises with regard to the load-bearing properties of the carrier.
  • the carrier can be any carrier for motor vehicles, for example transverse carriers or longitudinal carriers, which can be installed at a wide variety of locations in the motor vehicle.
  • the motor vehicle according to the invention comprises at least one carrier according to the invention or a possible configuration of the carrier according to the invention.
  • the motor vehicle can also have several of the carriers according to the invention or possible configurations of the carrier according to the invention.
  • FIG. 1 shows a perspective view of a support for a motor vehicle, which can be, for example, a cross member or a longitudinal member;
  • FIG. 2 shows a plan view of the carrier, wherein a section of the carrier which can be severed at different points to vary the length and thus produce different length variants of the carrier is schematically identified;
  • Fig. 3 is a schematic front view of the carrier, with a rectangular
  • a carrier 10 for a motor vehicle which can be, for example, a cross member or longitudinal member, is shown in a perspective view in FIG.
  • the carrier 10 has a plurality of side surfaces 12, 14, 16, 18 which meet at respective at least substantially straight longitudinal edges 20 and form a polygonal hollow profile cross section.
  • the hollow profile cross-section of the carrier 10 is quadrilateral, the hollow profile cross-section having a starting cross-section 22 and an end cross-section 24 on opposite end faces, which differ from one another with regard to their shape.
  • the initial cross section 22 is rectangular, with the final cross section 24 being a parallelogram with angles not equal to 90°.
  • the hollow profile cross section of the carrier 10 changes from the initial cross section 22 to the end cross section 24 along its main direction of extent x.
  • the shape of the hollow profile cross section of the carrier 10 thus changes along its main direction of extent x.
  • the carrier 10 has a constant height h, i.e. the height h does not change in the vertical direction z of the carrier 10 between the start and the end cross section 22, 24.
  • the two side surfaces 12, 16, which are arranged opposite one another and form a top and bottom of the carrier 10 are arranged parallel to each other.
  • these side faces 12, 16 can be flat in relation to a respective plane lying in the main extension direction x and transverse direction y.
  • components (not shown here) can be connected to the carrier 10 in a particularly simple manner on these side surfaces 12, 16.
  • the side surfaces 14, 18, which form the respective side parts of the carrier 10 are inclined inwards or outwards relative to the initial cross-section 22. Under the inclination, in particular, a partial curvature of the respective side surfaces 14, 18 to be understood.
  • the inclined side surfaces 14, 18 ensure that there are no collisions with the relevant components, which can protrude in the direction of the carrier 10, in particular in the transverse direction y. Due to the straight longitudinal edges 20, a high load-carrying capacity of the carrier 10 can nevertheless be ensured.
  • the carrier 10 is shown in a plan view, so that the side surface 12 serving as the upper side can be seen in particular.
  • the side face 18 is tilted or warped, i.e. is inclined outwards in the transverse direction y relative to a plane spanned from the main extension direction x and vertical direction z, and in particular can also be partially warped.
  • the opposite side surface 14, on the other hand cannot be seen, since it can be inclined, tilted and in particular also curved inward in the transverse direction y, for example with respect to a plane spanned from the main extension direction x and vertical direction z.
  • a section 26 of the hollow profile cross section of the carrier 10 is indicated schematically here.
  • This section 26 begins at the initial cross-section 22 and has a fixed cross-section for a given length.
  • the most varied variants of the carrier 10 ie length variants, can be produced. Since the section 26 has a constant cross-section, namely the initial cross-section 22, the carrier 10 always has the same cross-section at its front end after the severing process, i.e. on the left according to the present illustration, regardless of where exactly the section 26 is severed on. It is thus possible to produce the most varied length variations of the carrier 10 in a very simple manner.
  • FIG. 3 shows the carrier 10 in a schematic front view, with the initial cross section 22 of the carrier 10 being drawn in with a solid line and the end cross section 24 being shown with dashed lines.
  • the initial cross section 22 has a rectangular shape
  • the final cross section 24 has the shape of a parallelogram with angles that are not equal has 90°.
  • the parallel arrangement of the side surfaces 12, 16 serving as the upper side and underside can be clearly seen here, as well as the side surfaces 14, 18 at the end cross section 24 relative to the initial cross section 22 are inclined inwards or outwards.
  • the respective areas of the side surfaces 14, 18 are arranged or extend, depending on how close they are to the start cross section 22 and the end cross section 24 in the main direction of extension x.
  • the lower right longitudinal edge 20 migrates outwards (to the right according to the illustration), the left lower longitudinal edge 20 also outwards, with the two upper longitudinal edges 20 running parallel to the main direction of extension x. In relation to the vehicle, this means that both lower longitudinal edges 20 move outwards, for example. If—according to the present illustration—a component arranged to the left of the carrier were to protrude to the right, this could be solved with regard to the packing, since the left side surface 14 deviates to the right as the distance from the initial cross section 22 increases.
  • the carrier 10 can also have completely different cross-sectional shapes, shapes and dimensions. What is essential for the carrier 10 is that the respective longitudinal edges 20 run at least substantially straight and the hollow profile cross section of the carrier 10 has said starting cross section 22 and end cross section 24 on its opposite end faces, which differ from one another in terms of their shape, so that the hollow profile cross section of the carrier 10 along in the direction of main extent x of the carrier 10 gradually or continuously transitions from the initial cross section 22 into the end cross section 24, as a result of which one or more of the side surfaces 12, 14, 16, 18 or other side surfaces relative to the initial cross section 22 are at least partially inclined inwards can, so as to solve 10 problems with bottlenecks to neighboring components while maintaining the mechanical stability of the carrier.
  • the load level of the carrier 10 does not drop, so that, for example, no additional increases in wall thickness or increases in material quality are necessary to compensate for this.
  • a carrier 10 with maximum mechanical functionality is provided in a cost-effective, light-weight and package-optimized manner.
  • flexibility for length differentiation, ie variant formation of the carrier 10, as shown schematically with reference to FIG. 2, can be easily implemented.

Landscapes

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

Abstract

L'invention concerne un élément pour un véhicule automobile, plus particulièrement un élément transversal ou un élément longitudinal, comprenant une pluralité de surfaces latérales, qui se rencontrent au niveau de bords longitudinaux respectifs au moins sensiblement droits et forment une section transversale à profil creux polygonal. La section transversale à profil creux possède, aux extrémités opposées de l'élément, une section transversale initiale et une section transversale d'extrémité, qui diffèrent l'une de l'autre par rapport à leur forme et/ou agencement perpendiculaire à la direction principale d'extension (x) de l'élément (10). La section transversale à profil creux passe de la section transversale initiale à la section transversale d'extrémité le long de la direction principale d'étendue de l'élément. Au moins une des surfaces latérales est inclinée, dans une sous-région, par rapport à la section transversale initiale. L'invention concerne également un véhicule automobile équipé d'au moins un élément de ce type.
PCT/EP2021/068281 2020-07-31 2021-07-02 Élément pour véhicule automobile WO2022022944A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020120245.8A DE102020120245B4 (de) 2020-07-31 2020-07-31 Träger für ein Kraftfahrzeug
DE102020120245.8 2020-07-31

Publications (1)

Publication Number Publication Date
WO2022022944A1 true WO2022022944A1 (fr) 2022-02-03

Family

ID=76807657

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/068281 WO2022022944A1 (fr) 2020-07-31 2021-07-02 Élément pour véhicule automobile

Country Status (2)

Country Link
DE (1) DE102020120245B4 (fr)
WO (1) WO2022022944A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0450083A (ja) * 1990-06-15 1992-02-19 Toyota Motor Corp 車体のフロントサイドメンバ構造
EP1133428A1 (fr) * 1998-11-26 2001-09-19 Lotus Cars Limited Barre resistant a l'ecrasement pour automobiles
DE102011077810A1 (de) 2011-06-20 2012-12-20 Bayerische Motoren Werke Aktiengesellschaft Karosserie eines Kraftfahrzeugs
DE102011088111A1 (de) 2011-12-09 2013-06-13 Bayerische Motoren Werke Aktiengesellschaft Träger einer Karosserie eines Kraftfahrzeugs
DE202016103279U1 (de) * 2015-06-24 2016-09-23 Ford Global Technologies, Llc Sechzehneckiges Verstärkungselement für Fahrzeuge
EP3219589A1 (fr) * 2014-12-22 2017-09-20 Nippon Steel & Sumitomo Metal Corporation Élément de structure

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19526707A1 (de) 1995-07-24 1997-02-06 Ymos Ag Ind Produkte Aufprallträger für Kraftfahrzeuge
DE102005006250B3 (de) 2005-02-11 2006-08-03 Daimlerchrysler Ag Fahrzeugkarosserie eines Kraftwagens
DE102013008916A1 (de) 2013-05-24 2014-11-27 Audi Ag Hohlprofil für eine Trägerstruktur eines Fahrzeugs
DE102013008918B4 (de) 2013-05-24 2018-06-07 Audi Ag Hohlprofil für eine Trägerstruktur eines Fahrzeugs
DE202014002839U1 (de) 2014-04-01 2015-07-02 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Unterbau für ein Kraftfahrzeug

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0450083A (ja) * 1990-06-15 1992-02-19 Toyota Motor Corp 車体のフロントサイドメンバ構造
EP1133428A1 (fr) * 1998-11-26 2001-09-19 Lotus Cars Limited Barre resistant a l'ecrasement pour automobiles
DE102011077810A1 (de) 2011-06-20 2012-12-20 Bayerische Motoren Werke Aktiengesellschaft Karosserie eines Kraftfahrzeugs
DE102011088111A1 (de) 2011-12-09 2013-06-13 Bayerische Motoren Werke Aktiengesellschaft Träger einer Karosserie eines Kraftfahrzeugs
EP3219589A1 (fr) * 2014-12-22 2017-09-20 Nippon Steel & Sumitomo Metal Corporation Élément de structure
DE202016103279U1 (de) * 2015-06-24 2016-09-23 Ford Global Technologies, Llc Sechzehneckiges Verstärkungselement für Fahrzeuge

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Publication number Publication date
DE102020120245A1 (de) 2022-02-03
DE102020120245B4 (de) 2022-05-12

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