EP1919741A1 - Dispositif de protection passive pour vehicule a moteur - Google Patents

Dispositif de protection passive pour vehicule a moteur

Info

Publication number
EP1919741A1
EP1919741A1 EP06777395A EP06777395A EP1919741A1 EP 1919741 A1 EP1919741 A1 EP 1919741A1 EP 06777395 A EP06777395 A EP 06777395A EP 06777395 A EP06777395 A EP 06777395A EP 1919741 A1 EP1919741 A1 EP 1919741A1
Authority
EP
European Patent Office
Prior art keywords
motor vehicle
adapter
vehicle according
ribs
component
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.)
Withdrawn
Application number
EP06777395A
Other languages
German (de)
English (en)
Inventor
Frank Lutter
Boris Koch
Ralf Zimnol
Ulrich Grosser
Martin Klocke
Ulrich Dajek
Alexander Ickes
Anja JÄSCHKE
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.)
Lanxess Deutschland GmbH
Original Assignee
Lanxess 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
Priority claimed from DE200610019648 external-priority patent/DE102006019648A1/de
Application filed by Lanxess Deutschland GmbH filed Critical Lanxess Deutschland GmbH
Publication of EP1919741A1 publication Critical patent/EP1919741A1/fr
Withdrawn legal-status Critical Current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
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B60R21/38—Protecting non-occupants of a vehicle, e.g. pedestrians using means for lifting bonnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B60R2021/343—Protecting non-occupants of a vehicle, e.g. pedestrians using deformable body panel, bodywork or components

Definitions

  • the invention relates to a device for reducing personal injury in the event of an accident with a motor vehicle.
  • HIC value Head Injury Criterion value
  • the HIC value is an internationally used parameter for the severity of head injuries With a HIC value of 1 000, for example, the risk of life-threatening injuries is 1 5%, with a value of 2000 already 90%
  • the object of the invention is to provide a device for a motor vehicle, with the above all the danger potential is reduced
  • an adapter between the body and located inside the body, adjacent inner components of the motor vehicle is used, which shortens the free path between the inner components and the body of the adapter is the reasons mentioned below, in particular a structure that in the case Crashes or shatters and / or kinks or folds the impact of a head
  • the structure is for example part of a front hood
  • a free path in the sense of the invention is the direct, shortest path between a component and the adjacent body which is free from other parts
  • the energy resulting from the collision is transmitted to a passer - by or an individual at an earlier point in time.
  • the person or the head of a person is strongly decelerated.
  • the HIC value becomes better, because sooner after the impact It is shown that the HIC value thus achieved is reduced by the earlier energy transfer thus achieved, even if in the short term a higher impulse or a higher maximum acceleration as a result of the earlier deceleration occurs
  • the invention is based on the idea, in the case of inner components adjacent to the sides of the carcass, that the acceleration and an associated energy transmission do not act over a relatively long period of time and relatively shallowly increase, but rather the maximum of the acceleration or acceleration Energy transfer is achieved as early as possible
  • the adapter in an advantageous embodiment comprises a structure which, in the event of an impact, breaks or shatters and / or kinks or folds ensure that in the event of an impact, the energy released thereby initiates the collapse and / or buckling and is thus reduced immediately after reaching a short maximum.
  • the period of the energy transfer is kept so short and yet the time of the maximum energy transfer is reached very early , The H) C value is thus reduced.
  • a comparable effect is achieved with a crumbling structure. If a head of a pedestrian strikes a body, the structure crumbles, so the energy produced by the collision initiates the collapse, so that at that moment relatively much energy will be transmitted to the passers-by. Immediately thereafter, however, the energy transfer curve drops rapidly.
  • the presence of a rib structure on the one hand with the body includes a substantially true angle and on the other hand consists of such a material, which crumbles in the event of a collision, particularly well then the desired energy transfer curve is achieved, since then The ribs are preferably uniformly distributed over the surface of the adapter, so as to be independent from the point of impact to achieve the desired reduction in HIC value.
  • Materials which can crumble or shatter within the meaning of the invention are glass, as well as brittle plastics such as thermosets, thermoplastics and reinforced thermoplastics, die-cast metals such as aluminum or magnesium with an elongation at break of a few percent, the elongation at break, then having these materials are then, for example, up to 1 0, advantageously up to 5 percent,
  • brittle materials can be adjusted relatively poorly reproducible.
  • tougher materials are preferred which have a significantly higher elongation at break of preferably more than 50%.
  • Suitable metals and plastics, in particular steels, polyamide 6 are suitable , Polyamide 6,6 or PBT. From these materials, structures are then provided that achieve the desired energy curve by kinking. By using these materials, the energy trajectory curve can be set more reproducibly,
  • the ribs of the structure which crumble or buckle in the event of an impact are separated by cavities.
  • the distance between two adjacent ribs is then preferably at least as great as the ribs are high.
  • the distance between two is particularly preferred at least twice as wide adjacent ribs This ensures that there is enough space between the ribs so that the material of the ribs can buckle laterally or space is available to accommodate the crumbling or bursting material, thus providing the desired space
  • ribs of the structure are separated from one another by readily compressible foams or sponges.
  • the adapter is used exclusively at the points where the free path without providing the adapter between the body and an adjacent inner component of the vehicle amounts to up to seven centimeters It has been found that with free paths of more than seven centimeters, the compliance of the bodywork is regularly sufficient to achieve low HIC values
  • the remaining free path between an adjacent inner component of the vehicle and the body is reduced to up to 1 0 mm, advantageously up to 7 mm It has been shown sic h that while keeping this maximum provided free Way the desired energy absorption curve is achieved in order to lower the HIC value significantly
  • the free path is not reduced to zero, but deliberately provided a free path of preferably at least 5 mm It has been found that on the one hand a very small free path can be provided and still one On the other hand, smaller impacts do not unintentionally induce buckling or breaking of a structure of the adapter, which could even go unnoticed externally. Overall, therefore, the danger potential would increase if not deliberately a small one Free space remains
  • the adapter in one embodiment is adapted upwards and / or downwards to the shape and course of the adjacent component.
  • its external shape corresponds to an adjacent one Engine block towards the shape of the adjacent part of the engine block
  • the shape of the adapter to the body hm corresponds to the shape or course of the bodywork
  • the rib structure of the adapter is one embodiment preferably 20 to 50 mm, preferably at least 35 mm high It is thus material of at least 20 to 50 mm high for da s crumpling or buckling at your disposal
  • the adapter is attached directly to the component This is especially advantageous if the adapter also borders on a Motorha ube The handling of the hood is not undesirable complicated by the adapter
  • the adapter may preferably also be attached to the body, since this can usually be implemented in a technically simple manner
  • an adapter adjoins an engine hood, since especially collisions between man and hood are particularly dangerous
  • an adapter thus reduces the danger potential for a pedestrian in a technically simple and safe way considerably.
  • the provision of an adapter further makes it possible to provide passive protection inexpensively, although due to, for example, different motors, the geometries within a vehicle are constantly different.
  • the adapter requires little space.
  • the body additionally has a ribbed structure such as the adapter and in particular instead of the stabilization serving braces. This helps to lower the HIC value.
  • This rib structure is also advantageously distributed evenly over the surface, which can endanger a pedestrian.
  • the invention further relates to a structure front hood for a motor vehicle, characterized in that the front hood comprises a structure (4) for reducing the HIC value, which in the event of a collision of a head on the front hood (2) crumbles or. shatters and / or kinked or folded, wherein the structure is preferably formed by ribs,
  • the structure preferably has, individually or in combination with one another, the abovementioned features of the adapter, for the reasons stated in each case.
  • Em head 1 has a weight of 4, 8 kg on The head strikes at a speed of 35 km / h on a clamped, compared to the lying inside the body component 3 compliant Sheet 2 on The sheet 2 is made of steel and is 0, 7 mm thick and is part of the body The unyielding, rigid component 3 is located behind the sheet inside the body The distance between the component 3 and the sheet 2 is 55 mm
  • the dashed line in Figure 2 shows the time course of the speed of the head. Plotted is the speed in [km / h * 1 0] against the time t in [sec]
  • the solid as a function plotted line in FIG. 2 illustrates the acceleration of the head 1 during the impact.
  • the integration limits t, and t 2 are plotted as vertical lines for the determination of the HIC value.
  • the integration limits result from the aforementioned formula t, and t 2 are calculated in such a way that a maximum HIC value results in the resulting time window. Value is 41 000
  • FIG. 3 The second construction shown in Fig. 3 relates to the present invention.
  • an adapter 4 formed by ribs for reducing the HIC value between the rigid, unyielding member 3 and the clamped resilient sheet 2 is attached
  • Figure 4 shows a plan view of the ribs, which are honeycomb-shaped
  • Each rib of a hexagonal honeycomb is 3, 2 mm thick, 45 mm high and 1 45 mm long
  • Each rib consists of PA ⁇ GF30
  • a free path of 1 0 mm has remained between the structure 4 and the component 3
  • the illustration in FIG. 5 corresponds to the representation from FIG. 2.
  • the velocity of the head 1 during the impact is indicated by a dashed line plotted against time f in seconds.
  • the solid line or function shows the course of the acceleration the sheet metal, so the speed of the head is continuously reduced in contrast to the situation in Figure 2 It is achieved so a much cheaper HIC value of 1 51 9, despite the presence of a component below the required limit of 2000 below

Landscapes

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

Abstract

L'invention concerne un dispositif pour diminuer les blessures des personnes en cas d'accident avec un véhicule à moteur.
EP06777395A 2005-08-30 2006-06-21 Dispositif de protection passive pour vehicule a moteur Withdrawn EP1919741A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005041161 2005-08-30
DE200610019648 DE102006019648A1 (de) 2006-04-25 2006-04-25 Passive Schutzeinrichtung für ein Kraftfahrzeug
PCT/EP2006/063398 WO2007025791A1 (fr) 2005-08-30 2006-06-21 Dispositif de protection passive pour vehicule a moteur

Publications (1)

Publication Number Publication Date
EP1919741A1 true EP1919741A1 (fr) 2008-05-14

Family

ID=36707580

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06777395A Withdrawn EP1919741A1 (fr) 2005-08-30 2006-06-21 Dispositif de protection passive pour vehicule a moteur

Country Status (5)

Country Link
US (1) US20080315626A1 (fr)
EP (1) EP1919741A1 (fr)
JP (1) JP2009505894A (fr)
KR (1) KR20080041295A (fr)
WO (1) WO2007025791A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4909092B2 (ja) * 2007-01-10 2012-04-04 本田技研工業株式会社 軽合金製の押出フレーム
US7735908B2 (en) * 2007-07-24 2010-06-15 Gm Global Technology Operations, Inc. Vehicle hood with sandwich inner structure
US7635157B2 (en) * 2007-09-11 2009-12-22 GM Global Technology Operation, INC Vehicle hood assembly with rippled cushion support
US7690720B2 (en) * 2008-01-31 2010-04-06 Gm Global Technology Operations, Inc. Energy absorbing vehicle hood assembly with asymmetric sandwich inner structure
JP5888086B2 (ja) * 2012-04-23 2016-03-16 スズキ株式会社 車両用フロントフード

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5706908A (en) * 1994-04-18 1998-01-13 Nissan Motor Co., Ltd. Front upper structure of automotive vehicle
ES2175889T3 (es) * 1999-10-21 2002-11-16 Ford Global Tech Inc Capo de motor para automoviles con proteccion para peatones.
KR100955550B1 (ko) * 2000-12-13 2010-04-30 가부시키가이샤 고베 세이코쇼 차체 후드용 패널 구조체
DE10062164B4 (de) * 2000-12-14 2019-03-07 Volkswagen Ag Aufpralldämpfende Motorhaube an einem Fahrzeug
ITMI20021042A1 (it) * 2002-05-16 2003-11-17 Adlev Srl Struttura di cofano per autovetture a caratteristiche migliorate di sicurezza
US6848738B2 (en) * 2003-06-25 2005-02-01 Key Safety Systems, Inc. Vehicle structure for pedestrian protection
KR20060120273A (ko) * 2004-02-05 2006-11-24 리이터 테크놀로지스 아게 자체 지지형 차량 본체부
JP4470607B2 (ja) * 2004-06-21 2010-06-02 マツダ株式会社 車両用フード構造
FR2879538B1 (fr) * 2004-12-17 2008-07-18 Peugeot Citroen Automobiles Sa Boitier compressible pour vehicule automobile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007025791A1 *

Also Published As

Publication number Publication date
US20080315626A1 (en) 2008-12-25
WO2007025791A1 (fr) 2007-03-08
JP2009505894A (ja) 2009-02-12
KR20080041295A (ko) 2008-05-09

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