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WO2025008329A1 - Traverse de pare-chocs - Google Patents

Traverse de pare-chocs Download PDF

Info

Publication number
WO2025008329A1
WO2025008329A1 PCT/EP2024/068563 EP2024068563W WO2025008329A1 WO 2025008329 A1 WO2025008329 A1 WO 2025008329A1 EP 2024068563 W EP2024068563 W EP 2024068563W WO 2025008329 A1 WO2025008329 A1 WO 2025008329A1
Authority
WO
WIPO (PCT)
Prior art keywords
insert
cross member
bumper cross
legs
member according
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.)
Pending
Application number
PCT/EP2024/068563
Other languages
German (de)
English (en)
Inventor
Stephan LAGIN
Dirk Junglas
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.)
Kirchhoff Automotive Deutschland GmbH
Original Assignee
Kirchhoff Automotive Deutschland GmbH
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 Kirchhoff Automotive Deutschland GmbH filed Critical Kirchhoff Automotive Deutschland GmbH
Publication of WO2025008329A1 publication Critical patent/WO2025008329A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • B60R2019/1813—Structural beams therefor, e.g. shock-absorbing made of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R2019/186—Additional energy absorbing means supported on bumber beams, e.g. cellular structures or material

Definitions

  • the structural subdivision of the insert 9 can be seen more clearly from the longitudinal section in Figure 3.
  • the insert 9 comprises a central section 13. This section is the section in which the back 12 is convexly shaped in the direction of the vehicle chassis and is thus bulged.
  • the central section 13 merges into a transition section 14, 14.1, which in turn is followed by an end section 15.
  • the back 12 of the illustrated embodiment is straight in the area of its end sections 15, 15.1 and runs parallel or approximately parallel to the web 7 of the carrier 2 in these sections.
  • the insert 9 is tapered, as a result of which its cross-sectional area is significantly reduced, namely to approximately 50% in the illustrated embodiment.
  • the central section 13 is additionally structured in that the middle area of the central section 13 has a lower back height than in the adjacent sections.
  • Figure 4 shows a longitudinal section of a bumper cross member 1.1 which, with the exception of the contouring of the leg ends of its insert 9.1, corresponds to the bumper cross member 1 of the previous figures.
  • the insert 9.1 has only two connection points 16.1 in its central section 13.1.
  • the third connection point 16 located between the two outer connection points 16 of the insert 9 is not provided for the insert 9.1.
  • the entire intermediate piece between the two connection points 16.1 is not in contact with the inside of the strike plate 3 and is concave over this length.
  • the above-mentioned bumper cross members 1, 1.1 are significantly improved in terms of their crash performance compared to conventional bumpers in which inserts are inserted into the support but which do not have the structure of the inserts 9 or 9.1.
  • Figure 5 shows the bumper cross member 1 in a representation corresponding to that of Figure 3 in front of an obstacle H.
  • the bumper cross member 1 moves in the x-direction towards the obstacle H.
  • the special design of the insert 9 causes the bumper cross member 1 to wrap around the obstacle H, but without cracking or even breaking.
  • the reason for this is the special design of the insert 9, through which a curvature or deformation system is provided on the tension side (the side facing the vehicle chassis) by the convex design of its central section 13 and by the material specification present in the transition sections 14, 14.1 as a result of the convex shape.
  • the back 12 of the insert 10 can be clearly absorb or withstand higher tensile forces than conventional bumper cross members.
  • Figure 6 shows the bumper cross member 1 after a deformation of approximately 260 mm, which was absorbed without cracks by deforming the bumper cross member 1, as shown in Figure 6.
  • the concave recesses on the pressure side on the strike plate side serve as predefined bending or kinking points.
  • the support 23 of the embodiment shown has two differently designed buckling support structures.
  • the support 23 has a buckling support bead 24 in the middle of its longitudinal extension in each of its two legs, which forms the front ends of the legs.
  • the support 25 has notches as buckling support structures.
  • the folding support beads 26, 26.1 are designed as positive structures, thus extending outwards from the insert 22 with regard to their embossing direction in the z direction.
  • the folding beadings 26, 26.1 have their greatest embossing depth at the respective leg end.
  • the folding beadings 26, 26.1 run out in the direction of the back of the insert 22 and end before the transition of the legs into the back.
  • the folding beadings 26, 26.1 are, as can be seen from Figure 12, arranged in the two legs in alignment with one another in the z direction.
  • an end section 27 is constructed in the same way as the transition section between the end section 27 and the central section with regard to the contouring of the spine and the trimming of the legs.
  • the opposite end sections 27 of the insert 22.1 are constructed identically.
  • Figure 15 shows the bumper cross member 20 in a longitudinal section.
  • the convex shape in its central section pointing towards the rear web of the support 23 in the direction of the longitudinal extension of the insert 22 is clearly visible.
  • the buckling system beads 26.1 are also visible in this illustration.
  • the buckling support structure provided by the buckling support beads 26.1 is additionally determined by this material recess.
  • the insert 22 is connected to the strike plate 21 by means of a welded connection at the connection sections marked with the reference number 30.
  • FIG 16 shows the bumper cross member 20.1 in the same representation as Figure 15 shows the bumper cross member 20.
  • the above statements on the bumper cross member 20 apply equally to the bumper cross member 21. Due to the greater length of the insert 22.1, this is in addition to the connection sections 30.1 to which the insert
  • FIG. 17a shows an initial deformation of the bumper cross member 20 in the area of its center.
  • the buckling behavior is defined by the buckling system structures located in the middle central section of the bumper cross member 20. If the pole penetrates further into the bumper cross member 20 in the direction of the vehicle, this middle central section deforms further.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

L'invention concerne une traverse de pare-chocs (1) pour véhicule comprenant - un support (2) dont l'axe longitudinal s'étend dans la direction transversale du véhicule (direction y) et qui est ouvert dans la direction d'entraînement (direction x) et comprend une chambre (8) entourée par une branche supérieure (5), une branche inférieure (6), et une toile (7) qui relie les deux branches (5), (6) dans la direction verticale du véhicule, à savoir la direction z, - une plaque de fermeture (3) qui s'étend sur l'ouverture de support dans la direction verticale du véhicule (direction z) et qui est reliée aux branches (5), (6) du support (2), et - un insert (9), (9.1) qui est placé dans la chambre (8) du support (2) et présente une branche supérieure (10), une branche inférieure (11), et une partie arrière (12) qui relie les branches (10), (11) à la fermeture arrière des branches, dont le côté ouvert est tourné dans la direction d'entraînement (direction x), et dont les branches (10), (11) sont reliées à la plaque de fermeture (3). L'invention est caractérisée en particulier en ce que la partie arrière (12) de l'insert (9), (9.1) présente une forme convexe au moins dans sa section centrale, par rapport à l'extension longitudinale (direction y) de la partie arrière.
PCT/EP2024/068563 2023-07-04 2024-07-02 Traverse de pare-chocs Pending WO2025008329A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023117618.8 2023-07-04
DE102023117618.8A DE102023117618A1 (de) 2023-07-04 2023-07-04 Stoßfängerquerträger

Publications (1)

Publication Number Publication Date
WO2025008329A1 true WO2025008329A1 (fr) 2025-01-09

Family

ID=91960677

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/068563 Pending WO2025008329A1 (fr) 2023-07-04 2024-07-02 Traverse de pare-chocs

Country Status (2)

Country Link
DE (1) DE102023117618A1 (fr)
WO (1) WO2025008329A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016163054A1 (fr) 2015-04-08 2016-10-13 豊田鉄工株式会社 Renfort de pare-choc
WO2019072653A1 (fr) 2017-10-09 2019-04-18 Kirchhoff Automotive Deutschland Gmbh Traverse de pare-chocs
DE102018106526A1 (de) * 2018-03-20 2019-09-26 Benteler Automobiltechnik Gmbh Querträger zur Anordnung an einem Kraftfahrzeug
US20230143784A1 (en) 2021-11-05 2023-05-11 Benteler Automobiltechnik Gmbh Bumper with an integrated reinforcing plate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016163054A1 (fr) 2015-04-08 2016-10-13 豊田鉄工株式会社 Renfort de pare-choc
WO2019072653A1 (fr) 2017-10-09 2019-04-18 Kirchhoff Automotive Deutschland Gmbh Traverse de pare-chocs
DE102018106526A1 (de) * 2018-03-20 2019-09-26 Benteler Automobiltechnik Gmbh Querträger zur Anordnung an einem Kraftfahrzeug
US20230143784A1 (en) 2021-11-05 2023-05-11 Benteler Automobiltechnik Gmbh Bumper with an integrated reinforcing plate

Also Published As

Publication number Publication date
DE102023117618A1 (de) 2025-01-09

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