WO2024251486A1 - Crashabsorber-struktur für den einsatz in einem kraftfahrzeug - Google Patents
Crashabsorber-struktur für den einsatz in einem kraftfahrzeug Download PDFInfo
- Publication number
- WO2024251486A1 WO2024251486A1 PCT/EP2024/063463 EP2024063463W WO2024251486A1 WO 2024251486 A1 WO2024251486 A1 WO 2024251486A1 EP 2024063463 W EP2024063463 W EP 2024063463W WO 2024251486 A1 WO2024251486 A1 WO 2024251486A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- deformation body
- absorber structure
- crash absorber
- deformation
- crash
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
- B62D21/157—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body for side impacts
-
- 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
- B60R19/24—Arrangements for mounting bumpers on vehicles
- B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
- B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
-
- 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
- B62D29/008—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of light alloys, e.g. extruded
Definitions
- Crash absorber structure for use in a motor vehicle
- the present invention relates to a crash absorber structure for use in a motor vehicle and to a motor vehicle with such a crash absorber structure.
- Crash absorber structures for use in motor vehicles are known from the state of the art.
- the known crash absorber structures are usually made of joined metal sheets or metal extruded profiles.
- sheet metal or extruded profile structures are less suitable in terms of maximum component integration to maximize a plurality of advantageous functions in a single component.
- crash absorber structures made of cast components are known from the prior art, for example from DE 198 58 303 B4, EP 1 759 958 B1, DE 10 2020205 196 B4 and DE 199 31 741 B4, which have a high level of component integration and combine a number of functions, such as a reduction in assembly costs and assembly time, space savings and weight reduction and the like.
- the known crash absorber structures made of cast components have a lower ductility, which limits the absorption capacity for the impact energy.
- a crash absorber structure for a motor vehicle which has a high level of component integration, is particularly structurally simple and inexpensive to produce and at the same time has a low weight and guarantees a high capacity for absorbing impact energy.
- a crash absorber structure for use in a motor vehicle, preferably for use in a longitudinal member of a motor vehicle.
- the crash absorber structure according to the invention comprises a deformation body extending along a deformation axis and deformable along the deformation axis for absorbing impact forces, with a length and a material thickness, as well as a first and second opening arranged at each end of the deformation body with a height and a width, wherein the deformation body is designed as a cast component made of a metal material and has a regular, wave-shaped outer profile formed along its length.
- the crash absorber structure in particular due to its design as a cast component with a wave-shaped outer profile formed along its length, is designed to enable a high capacity for absorbing impact forces and at the same time a high level of component integration for simple and cost-effective production and low weight.
- the high capacity for absorbing impact forces is ensured in particular by the fact that the wave-shaped outer profile of the deformation body supports the continuous creation of local bending modes.
- the wave-shaped outer profile according to the invention thus practically provides a "pre-bending" which ensures that when deformed due to the absorption of impact forces, only moderate plastic strains occur in the bending zones and thus only locally limited cracks arise on the surfaces of the crash absorber structure that are subject to tensile loads.
- the resulting folds hook and jam into one another with further deformation and thus prevent the deformed areas from slipping in an annoying manner, which ultimately leads to progressively advancing deformation behavior at a constant level.
- the crash absorber structure according to the invention can preferably be arranged in the front and/or rear area, in particular in a longitudinal member of a motor vehicle. It is understood that the crash absorber structure according to the invention can be used not only in motor vehicles, such as passenger cars or trucks, but also in commercial vehicles or the like.
- a deformation axis can be defined as In the invention, a deformation body can preferably be understood as an axis along which the crash absorber structure in question deforms most easily or preferably under load. In the context of the invention, a deformation body can be understood in particular as a body that deforms under load, in particular due to external impact forces, while absorbing the impact energy.
- a regular, wave-shaped outer profile can be understood in particular as an outer wave-shaped profile with a uniform amplitude and wavelength, which is preferably arranged symmetrically about a center line.
- the deformation body in question is preferably divided into a series of identically designed deformation chambers along its length and along the deformation axis.
- the deformation body also has a regular, wave-shaped inner profile formed along its length.
- the shape of the inner and outer profile can be designed accordingly and the crash absorber structure can preferably have constant wall thicknesses.
- the deformation body is made of an aluminum material, preferably of a die-cast aluminum alloy.
- the crash absorber structure according to the invention it is possible to generate a structure that enables very efficient and robust absorption of the impact energy, despite the comparatively low ductility of die-cast aluminum alloys.
- the deformation body has a first and second end piece arranged at the end with a straight-line outer profile.
- the first and second end piece arranged at the end can advantageously be designed in the form of a flange, which preferably each comprises a plurality of recesses for introducing fastening means, such as screws or the like, and can thus be attached, for example, easily and quickly to a longitudinal member of a motor vehicle.
- the deformation body is hollow, wherein preferably the first and second opening are circular, wherein the deformation body in particular has a hollow cylindrical basic structure.
- the deformation body is trough-shaped, wherein preferably the first and second openings are semicircular, wherein the deformation body in particular has a semi-hollow cylindrical basic structure.
- the deformation body is trough-shaped, wherein preferably the first and second openings are U-shaped, wherein the height of the first and second openings is preferably greater than the width of the first and second openings.
- stabilization webs are provided perpendicular to the deformation axis to stabilize the deformation body, wherein the stabilization webs are preferably arranged parallel to the first and second openings.
- the stabilization webs are preferably integrated into the cast component in a demoldable manner.
- the deformation body is formed in one piece.
- the deformation body is designed in several parts, wherein the deformation body is preferably composed of an upper and an identically designed lower element, wherein the upper and lower elements are each in particular semi-hollow-cylindrical and are composed to form a hollow-cylindrical deformation body.
- the upper and lower elements can preferably be joined chemically, mechanically or thermally, in particular glued, riveted or welded to one another.
- a wave-shaped outer profile of a crash absorber structure with a high absorption capacity of impact forces along a It can also advantageously be provided that the regular, wave-shaped outer profile is helical in shape.
- the core and outer contour can preferably be removed from the mold via axial removal of the spindle in a die-casting tool.
- the invention also relates to a motor vehicle comprising at least one, preferably at least two crash absorber structures described above.
- the motor vehicle according to the invention thus has the same advantages as have already been described in detail with regard to the crash absorber structure according to the invention.
- Figure 1 shows a crash absorber structure according to the invention in a spatial view according to a first embodiment
- Figure 2 shows a crash absorber structure according to the invention in a spatial view according to a second embodiment
- Figure 3 shows a crash absorber structure according to the invention in a spatial view according to a third embodiment
- Figure 4 shows a crash absorber structure according to the invention in a spatial view according to a fourth embodiment
- Figure 5 shows a crash absorber structure according to the invention in a spatial view according to a fifth embodiment
- Figure 6 shows a crash absorber structure according to the invention in a spatial view according to a sixth embodiment
- Figure 7 is a representation of the energy-absorbing deformation mechanism of the crash absorber structure according to the invention during an impact.
- Figure 1 shows a crash absorber structure 2 according to the invention in a spatial view according to a first embodiment.
- the crash absorber structure 2 comprises a deformation body 4 which extends along a deformation axis X and is deformable along the deformation axis X for absorbing impact forces, with a length L and a material thickness D, a first and second opening 6a, 6b arranged at each end of the deformation body 4 with a height H and a width B, wherein the deformation body 4 is designed as a cast component made of a metal material and has a regular, wave-shaped outer profile formed along its length L.
- the deformation body 4 can advantageously be made of an aluminum material, in particular of an aluminum die-cast alloy.
- the deformation body 4 with the material thickness D is formed in one piece and comprises a first end piece 8a arranged at the end with a rectilinearly shaped outer profile.
- the deformation body 4 is hollow and the first and second openings 6a, 6b are circular, so that the deformation body 4 in the present case has an at least approximately hollow cylindrical basic structure.
- Figure 2 shows a crash absorber structure 2 according to the invention with an at least approximately hollow cylindrical basic structure in a spatial view according to a second embodiment, in which the regular wave-shaped outer profile is helical.
- Figure 3 shows a crash absorber structure 2 according to the invention with an at least approximately hollow-cylindrical basic structure in a spatial view according to a third exemplary embodiment, in which the deformation body 4 is designed in several parts and is composed of an upper and an identically designed lower element 10a, 10b, wherein the upper and lower elements 10a, 10b are each designed as semi-hollow cylinders and are composed to form a hollow-cylindrical deformation body 4.
- Figure 4 shows a crash absorber structure 2 according to the invention with an at least approximately semi-hollow-cylindrical basic structure in a spatial view according to a fourth embodiment, in which the deformation body 4 is trough-shaped, wherein preferably the first and second openings 6a, 6b are semicircular and the deformation body 4 has a semi-hollow-cylindrical basic structure.
- Figure 5 shows a crash absorber structure 2 according to the invention in a spatial view according to a fifth embodiment, in which the deformation body 4 is also trough-shaped, but the first and second openings 6a, 6b are U-shaped, wherein the height H of the first and second openings 6a, 6b is preferably greater than the width B of the first and second openings 6a, 6b.
- Figure 6 shows a crash absorber structure 2 according to the invention in a spatial view according to a sixth embodiment, which is constructed in the same way as the crash absorber structure 2 according to the invention according to the fifth embodiment, except that here additional stabilizing webs 12 are provided for stabilizing the deformation body 4 perpendicular to the deformation axis X, which are arranged parallel to the first and second openings 6a, 6b. It is understood that the wave-shaped end pieces 8a shown in Figures 5 and 6 can also be planar.
- Figure 7 shows a representation of the energy-absorbing deformation mechanism of the crash absorber structure 2 according to the invention during an impact.
- the high capacity of the crash absorber structure 2 according to the invention to absorb impact energy is ensured in particular by the fact that the wave-shaped outer profile of the deformation body 4 supports the continuous formation of local bending modes.
- the wave-shaped outer profile according to the invention thus practically provides a "pre-bending" which ensures that in the event of deformation due to the absorption of impact forces, only moderate plastic strains occur in the bending zones and thus only locally limited cracks arise on the surfaces of the crash absorber structure 2 that are subject to tensile stress.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202480037306.6A CN121285485A (zh) | 2023-06-05 | 2024-05-16 | 用于在机动车中的使用的碰撞吸收结构 |
| EP24727274.3A EP4719835A1 (de) | 2023-06-05 | 2024-05-16 | Crashabsorber-struktur für den einsatz in einem kraftfahrzeug |
| US19/410,233 US20260084753A1 (en) | 2023-06-05 | 2025-12-05 | Crash-absorber structure for use in a motor vehicle |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023205254.7A DE102023205254A1 (de) | 2023-06-05 | 2023-06-05 | Crashabsorber-Struktur für den Einsatz in einem Kraftfahrzeug |
| DE102023205254.7 | 2023-06-05 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US19/410,233 Continuation US20260084753A1 (en) | 2023-06-05 | 2025-12-05 | Crash-absorber structure for use in a motor vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024251486A1 true WO2024251486A1 (de) | 2024-12-12 |
Family
ID=91186898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/063463 Ceased WO2024251486A1 (de) | 2023-06-05 | 2024-05-16 | Crashabsorber-struktur für den einsatz in einem kraftfahrzeug |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20260084753A1 (de) |
| EP (1) | EP4719835A1 (de) |
| CN (1) | CN121285485A (de) |
| DE (1) | DE102023205254A1 (de) |
| WO (1) | WO2024251486A1 (de) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4211964C2 (de) * | 1992-04-09 | 1995-11-09 | Daimler Benz Ag | Als Wellrohr ausgebildeter Deformationskörper |
| DE19931741B4 (de) | 1999-07-08 | 2004-11-25 | Daimlerchrysler Ag | Kraftfahrzeugaufbau |
| DE202004009916U1 (de) * | 2004-06-24 | 2005-08-11 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Deformationselement für ein Kraftfahrzeug |
| DE19858303B4 (de) | 1998-12-17 | 2005-11-10 | Daimlerchrysler Ag | Vorbaustruktur für eine selbsttragende Rohbaukarosserie eines Personenkraftwagens |
| EP1759958A2 (de) * | 2005-08-29 | 2007-03-07 | Benteler Automobiltechnik GmbH | Crashrelevantes Bauteil einer Fahrzeugstruktur oder eines Fahrwerks eines Kraftfahrzeugs |
| EP2412583A1 (de) * | 2010-07-28 | 2012-02-01 | Aisin Seiki Kabushiki Kaisha | Stoßabsorbierende Vorrichtung für ein Fahrzeug und Stoßfängervorrichtung für ein Fahrzeug |
| JP2015045349A (ja) * | 2013-08-27 | 2015-03-12 | トヨタ自動車株式会社 | 衝撃吸収部材、衝撃吸収部材を鋳造する引上式連続鋳造装置及び引上式連続鋳造方法 |
| DE102020205196B4 (de) | 2020-04-23 | 2022-02-17 | Volkswagen Aktiengesellschaft | Crashelement, Fahrwerksteil und Fahrzeug |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02175452A (ja) * | 1988-12-28 | 1990-07-06 | Isuzu Motors Ltd | 車両の衝撃吸収装置 |
| JP2002039245A (ja) * | 2000-07-31 | 2002-02-06 | Hitachi Metals Ltd | アルミニウム合金鋳物製衝撃吸収部材 |
| JP2013117291A (ja) * | 2011-12-05 | 2013-06-13 | Hiroshima Aluminum Industry Co Ltd | 衝撃吸収部材 |
| DE102020209190A1 (de) * | 2020-07-22 | 2022-01-27 | Volkswagen Aktiengesellschaft | Crash Energieabsorber für ein Kraftfahrzeug |
-
2023
- 2023-06-05 DE DE102023205254.7A patent/DE102023205254A1/de active Pending
-
2024
- 2024-05-16 EP EP24727274.3A patent/EP4719835A1/de active Pending
- 2024-05-16 WO PCT/EP2024/063463 patent/WO2024251486A1/de not_active Ceased
- 2024-05-16 CN CN202480037306.6A patent/CN121285485A/zh active Pending
-
2025
- 2025-12-05 US US19/410,233 patent/US20260084753A1/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4211964C2 (de) * | 1992-04-09 | 1995-11-09 | Daimler Benz Ag | Als Wellrohr ausgebildeter Deformationskörper |
| DE19858303B4 (de) | 1998-12-17 | 2005-11-10 | Daimlerchrysler Ag | Vorbaustruktur für eine selbsttragende Rohbaukarosserie eines Personenkraftwagens |
| DE19931741B4 (de) | 1999-07-08 | 2004-11-25 | Daimlerchrysler Ag | Kraftfahrzeugaufbau |
| DE202004009916U1 (de) * | 2004-06-24 | 2005-08-11 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Deformationselement für ein Kraftfahrzeug |
| EP1759958A2 (de) * | 2005-08-29 | 2007-03-07 | Benteler Automobiltechnik GmbH | Crashrelevantes Bauteil einer Fahrzeugstruktur oder eines Fahrwerks eines Kraftfahrzeugs |
| EP1759958B1 (de) | 2005-08-29 | 2009-01-14 | Benteler Automobiltechnik GmbH | Crashrelevantes Bauteil einer Fahrzeugstruktur oder eines Fahrwerks eines Kraftfahrzeugs |
| EP2412583A1 (de) * | 2010-07-28 | 2012-02-01 | Aisin Seiki Kabushiki Kaisha | Stoßabsorbierende Vorrichtung für ein Fahrzeug und Stoßfängervorrichtung für ein Fahrzeug |
| JP2015045349A (ja) * | 2013-08-27 | 2015-03-12 | トヨタ自動車株式会社 | 衝撃吸収部材、衝撃吸収部材を鋳造する引上式連続鋳造装置及び引上式連続鋳造方法 |
| DE102020205196B4 (de) | 2020-04-23 | 2022-02-17 | Volkswagen Aktiengesellschaft | Crashelement, Fahrwerksteil und Fahrzeug |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4719835A1 (de) | 2026-04-08 |
| US20260084753A1 (en) | 2026-03-26 |
| CN121285485A (zh) | 2026-01-06 |
| DE102023205254A1 (de) | 2024-12-05 |
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