WO2007011238A1 - Crash protection system - Google Patents

Crash protection system

Info

Publication number
WO2007011238A1
WO2007011238A1 PCT/NO2006/000280 NO2006000280W WO2007011238A1 WO 2007011238 A1 WO2007011238 A1 WO 2007011238A1 NO 2006000280 W NO2006000280 W NO 2006000280W WO 2007011238 A1 WO2007011238 A1 WO 2007011238A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
crash
protection system
characterised
accordance
upper
Prior art date
Application number
PCT/NO2006/000280
Other languages
French (fr)
Inventor
Roald Helland Pedersen
Harald Vestol
Pål VIST
Original Assignee
Norsk Hydro Asa
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

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24Arrangements for mounting bumpers on vehicles
    • B60R19/26Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
    • B60R19/34Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/04Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects formed from more than one section in a side-by-side arrangement
    • B60R19/12Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects formed from more than one section in a side-by-side arrangement vertically spaced

Abstract

The invention relates to a crash protection system for a vehicle comprising one upper (1) and one lower (2) crash absorbing component. The components extend in the transversal direction of the vehicle, and are integrated to each other by connecting means (6). The connecting means can be deformable crash boxes.

Description

Crash protection system

The present invention relates to a new crash protection system for cars, particularly passenger cars, however also trucks and SUV's. The system is provided for the protection of the front of cars in frontal impacts, can however also be used to protect the rear end of the cars.

The invention is about improving the protection of the car and its occupants in crashes, at the same time as providing a non-aggressive crash interface towards others, in particular "soft" and "deformable" objects such as another car or a pedestrian.

The objective furthermore is to achieve this in a variety of crash situations and crash speeds, ranging from low speed impacts at walking pace to severe high speed ones. At the same time the invention has the object of further improving the crash towards hard objects such as walls, poles and so on.

In addition, the scope is to achieve this together with: -not impairing "packaging room" in the vehicle, thus providing space for other objects and functions such as lights, sensors and ducting for cooling air and so on.

It is understood, that when said objects are achieved, not only will the damage and dangers due to crashes be diminished, but other desirable effects will be achieved, such as reducing the overhang of the car, lessen the need for strength of the main car body and so on.

This again reduces the need for weight and bulk of the car, which again is very desirable, and may also influence positively the cost of producing and operating (running) the car.

EP 1384629 A2 (Sato, Suganuma) displays a crash system with an upper shock absorber and a lower shock absorber where the crash stroke of the upper shock absorber is larger than that of the lower shock absorber. The objective here is to improve the pedestrian crash. The present invention differs from prior art by the following means and properties:

-providing a crash module which has a high and a low part crash system which are functionally integrated with each other with means within the module during crash deformations,

-providing a crash module as above where the high and low part crash systems are supporting the crash deformation sequence of each other in order to ensure a predictable and optimized crash deformation,

-providing a crash module as above which may lead crash forces from one level to be dealt with as deformations on the part crash system of the other level through the connecting (integrating) means between the part crash systems,

-providing a crash module which is optimized for the complete range of crash situations, ranging from the pedestrian impact to the high speed crashes,

-providing a crash module as above where the connecting means between the top and bottom part crash systems may themselves be members which, like the transverse beams, may take direct impact blows and be deformed to absorb energy, as well as distributing the forces of these blows to parts of the module where they are absorbed by further deformation.

Said functional characteristics are achieved through providing connecting means between the part crash systems which:

-are part of the crash deformation and energy absorbing means of the complete crash module,

-are supporting and guiding each part of the crash system towards the other to ensure a stable and beneficial crash deformation,

-are contributing much more to the stiffness of the front of the car than that of the known prior art. The purpose of the invention is to ensure an improved crash performance during the whole range of crash situations than before, in an economical manner. Here improved crash performance also refers to being less aggressive towards the object that is hit, than has been possible with the prior art solutions.

This is achieved through the means of using new connecting means between upper and lower part crash systems in order to stabilize these during crash deformations, thus avoiding premature mal-functioning thereby exploiting the highest energy- absorbing potential of these part systems.

These and further advantages can be achieved with the invention as defined in the accompanying claims.

In the following, the invention shall be further described by figures and examples where:

Fig. 1 discloses a first embodiment of a crash protection system,

Fig. 2 discloses a second embodiment of a crash protection system,

Fig. 3 discloses a third embodiment of a crash protection system,

Fig. 4 discloses a fourth embodiment of a crash protection system.

The isometric Figures 1-4 display various preferred embodiments of the invention, seen from a point of view ahead of the car. Thus, these examples relate to a front crash module. In the figures, reference numerals 1 and 2 are the upper (high) and lower transverse (bumper) beams, whereas 3 is the right-hand side sidemember (engine rail, longitudinal), which is more or less a mirror image of the same left hand side item. Reference numeral 4 denounces the engine cradle (front engine and wheel suspension subframe) which is attached to the sidemembers either by elastic bushings or by non- elastic means. Reference numeral 5 indicates assembly flanges at the front of each sidemember, onto which the top part of the front crash module is bolted. It is here understood that the attachment to the sidemember may be by other means than this flange, such as through "plug in" solutions, where a top portion of the crash module is inserted into the sidemember.

In Figure 1 , the connecting means 6 constitutes of crashboxes which extend the height between the high and low transverse beams 1 , 2, and attaches these to the module. This attachment can be through joining welding, bolting or riveting and/or similar means. In the case of these boxes being made from aluminium extrusions, the direction of the extrusion is in the vertical direction as compared to the car.

The boxes contain sidewalls 7, and front and rear walls 8, 9, which may be uninterrupted as shown, or opened up, in other words being two flanges only, both front and rear.

In order to increase the energy-absorbing folding resistance, particularly of the high load path immediately behind the main bumper beam, the box may be indented (10). Indentations from each side may extend both to meet, and be joined, for example by welding or riveting.

The top part of the box may furthermore be folded to close the top opening in a similar manner, to achieve the same effect.

Alternatively, or in addition to said folding, a stiffening and energy-absorbing member 11 may be inserted between the sidewalls 7 to achieve a higher local strength. It is now realized that the portions 12 and 13 of the box now are more or less individual beams bridging the top and lower parts of the module. This is very beneficial when it comes to: -absorbing direct blows (beam portion 12),

-providing bending resistance and load transfer means (beam portions 12 and 13), -providing vertical "lines of defence" (12 and 13) against crash deformation intrusion of aggressive objects, such as another "narrow" bumper beam. The functions of the lower load path 14 mirror the upper load path as said, albeit with a lower force level.

It is understood that the engine cradle 4 provides a support for the lower part of the crash module. This applies also in the case of the engine cradle being elastically mounted to the sidemembers. In this case, the forces are transmitted partly only through the rubber bushing, and more through mechanical contact between the cradle and parts of the sidemembers, after the normal elastic movement of the rubber bushings is exceeded.

In Figure 2, the main direction of the connecting means 6 is in the longitudinal direction of the vehicle. A top and a bottom closed chamber may be provided.

It is understood, that particularly the lower chamber, providing the low load-path which is dealing with less force, may be of an open configuration, such as provided through a hat- or U-shaped section.

In-between top and bottom chamber, the connecting means 17 may be provided through an integral web, as shown, or two webs apart, thus creating a third closed chamber (not shown).

It is understood that this third chamber may further be divided by dividing walls, creating a multitude of chambers.

The web (walls) 17 may furthermore be processed to incorporate holes 18, which may have reinforcement indentations around the holes (not shown), and may furthermore be cut, bent, reformed and bent/rolled to vertical beams at any place along its (their) lengths.

It is within the scope of the invention to provide connecting means 17 which are laid out in line with the means in the Figures 2 and 3, but have their main axes in the transverse direction of the vehicle.

Figure 3 shows an embodiment where the connecting means are fabricated from one length of material by bending. In other words, 19, 19a and 19 b are integral. Reference numeral 19c shows a useful adaption where the member 19b is further split to increase the crash surface in-between the upper and lower transverse beam. In both embodiments, the crash box 20 may be a separate tube, or semi-open tube, which is attached to, eventually closed by (not shown), the member 19. The latter embodiment is particularly useful for "plug in" type of upper attachments to the sidemembers.

Figure 4 shows a further embodiment, where the member 21 extends downwards at an angle to provide "triangulation" stiffness to the lower member. The area 23 is thus stabilized particularly in the vertical direction of the vehicle.

From this point the member 21 extends up to the front top part of the upper box 20.

It is clear that in this way both the lower member 16 as well as the upper beam/box are stabilized. This is beneficial during the severe plastic crash deformations of the crash module.

This stabilization will be upheld for the first part of the crash deformation, as this starts from the front of the system.

Claims

Claims
1. Crash protection system for a vehicle comprising at least one upper (1 ) and one lower (2) crash absorbing component that extend in the transversal direction of the vehicle, characterised in that said components are integrated to each other by connecting means (6).
2. Crash protection system in accordance with claim 1 , characterised in that the connecting means is constituted by one or more crashbox(-es).
3. Crash protection system in accordance with claim 1 , characterised in that the upper crash component is integrated with at least one side member in the vehicle.
4. Crash protection system in accordance with claim 1 , characterised in that the lower crash component is integrated with an engine cradle arranged in the vehicle.
5. Crash protection system in accordance with claim 1 , characterised in that the upper crash absorbing component is a bumper beam.
6. Crash protection system in accordance with claim 2, characterised in that the crash box is attached to the upper and the lower component by means of joining welding, bolting, riveting or any other appropriate means.
7. Crash protection system in accordance with claim 2, characterised in that the crash box is formed as two hollow section modules, interconnected by a web member.
8. Crash protection system in accordance with claim 2, characterised in that the crash box is formed out of one blank of material, that may be an extruded profile, that is further processed to the final shape.
9. Crash protection system in accordance with claim 2, characterised in that the crash box comprises cantilevered structural members, arranged in a "V" shaped manner that serves to give a triangular stiffness between the upper and the lower crash absorbing component.
10. Crash protection system in accordance with claim 1 , characterised in that its components are mainly made out of aluminium or an alloy thereof.
PCT/NO2006/000280 2005-07-22 2006-07-17 Crash protection system WO2007011238A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NO20053599 2005-07-22
NO20053599 2005-07-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200611001913 DE112006001913T5 (en) 2005-07-22 2006-07-17 Collision avoidance system

Publications (1)

Publication Number Publication Date
WO2007011238A1 true true WO2007011238A1 (en) 2007-01-25

Family

ID=35295517

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2006/000280 WO2007011238A1 (en) 2005-07-22 2006-07-17 Crash protection system

Country Status (2)

Country Link
DE (1) DE112006001913T5 (en)
WO (1) WO2007011238A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2135775A1 (en) * 2008-06-18 2009-12-23 Faurecia Bloc Avant Bumper assembly and corresponding automobile
EP2241480A1 (en) * 2009-04-17 2010-10-20 Faurecia Bloc Avant Front end of a motor vehicle with large size support brackets
GB2477617A (en) * 2010-02-05 2011-08-10 Gm Global Tech Operations Inc Bumper arrangement for a motor vehicle having an energy absorber connected at two points
GB2477618A (en) * 2010-02-05 2011-08-10 Gm Global Tech Operations Inc Motor vehicle forward structure with upper and lower transverse bumper carriers
CN102310827A (en) * 2010-06-22 2012-01-11 通用汽车环球科技运作有限责任公司 Impact-damping structure with crash boxes
FR2967740A1 (en) * 2010-11-22 2012-05-25 Faurecia Bloc Avant An energy absorption with fibers embedded in a plastic material, and associated front
EP2889187A2 (en) 2013-12-24 2015-07-01 Toyota Jidosha Kabushiki Kaisha Vehicle body impact absorption structure
EP2915703A1 (en) * 2014-03-07 2015-09-09 Toyota Jidosha Kabushiki Kaisha Front structure of vehicle body

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010021575A1 (en) * 2010-05-26 2011-12-01 Gm Global Technology Operations Llc (N.D.Ges.D. Staates Delaware) Bumper arrangement for motor vehicle, comprises two bumper cross units that are arranged at distance from each other along vehicle vertical axis, where cross units are mounted on end section of longitudinal beam of vehicle body

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1000840A2 (en) * 1998-11-09 2000-05-17 Volkswagen Aktiengesellschaft Supporting structure for the front body for an automotiove vehicle
EP1266818A2 (en) * 2001-06-15 2002-12-18 Fuji Jukogyo Kabushiki Kaisha Front end structure of a vehicle
EP1293389A1 (en) * 2001-09-14 2003-03-19 Compagnie Plastic Omnium Motor vehicle energy absorbtion system
DE10154113A1 (en) * 2001-11-03 2003-05-15 Opel Adam Ag Front structure of a motor vehicle
JP2005001430A (en) * 2003-06-09 2005-01-06 Calsonic Kansei Corp Vehicle body front structure of automobile
US20050067860A1 (en) * 2003-09-25 2005-03-31 Nissan Motor Co., Ltd. Vehicle body end structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1000840A2 (en) * 1998-11-09 2000-05-17 Volkswagen Aktiengesellschaft Supporting structure for the front body for an automotiove vehicle
EP1266818A2 (en) * 2001-06-15 2002-12-18 Fuji Jukogyo Kabushiki Kaisha Front end structure of a vehicle
EP1293389A1 (en) * 2001-09-14 2003-03-19 Compagnie Plastic Omnium Motor vehicle energy absorbtion system
DE10154113A1 (en) * 2001-11-03 2003-05-15 Opel Adam Ag Front structure of a motor vehicle
JP2005001430A (en) * 2003-06-09 2005-01-06 Calsonic Kansei Corp Vehicle body front structure of automobile
US20050067860A1 (en) * 2003-09-25 2005-03-31 Nissan Motor Co., Ltd. Vehicle body end structure

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05) *

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8215705B2 (en) 2008-06-18 2012-07-10 Faurecia Bloc Avant Shock-absorber assembly and corresponding motor vehicle
FR2932748A1 (en) * 2008-06-18 2009-12-25 Faurecia Bloc Avant Whole bumper and motor vehicle corespondant
EP2135775A1 (en) * 2008-06-18 2009-12-23 Faurecia Bloc Avant Bumper assembly and corresponding automobile
EP2241480A1 (en) * 2009-04-17 2010-10-20 Faurecia Bloc Avant Front end of a motor vehicle with large size support brackets
FR2944498A1 (en) * 2009-04-17 2010-10-22 Faurecia Bloc Avant Front of motor vehicle with large sizes for shock absorbers support plates and associated vehicle.
GB2477617A (en) * 2010-02-05 2011-08-10 Gm Global Tech Operations Inc Bumper arrangement for a motor vehicle having an energy absorber connected at two points
CN102145675A (en) * 2010-02-05 2011-08-10 通用汽车环球科技运作有限责任公司 Bumper arrangement for motor vehicle
GB2477618A (en) * 2010-02-05 2011-08-10 Gm Global Tech Operations Inc Motor vehicle forward structure with upper and lower transverse bumper carriers
US8439412B2 (en) 2010-02-05 2013-05-14 GM Global Technology Operations LLC Motor vehicle forward structure
CN102310827A (en) * 2010-06-22 2012-01-11 通用汽车环球科技运作有限责任公司 Impact-damping structure with crash boxes
WO2012069746A1 (en) * 2010-11-22 2012-05-31 Faurecia Bloc Avant Energy absorption device with fibres embedded in a plastic material, and associated front face
FR2967740A1 (en) * 2010-11-22 2012-05-25 Faurecia Bloc Avant An energy absorption with fibers embedded in a plastic material, and associated front
US9051984B2 (en) 2010-11-22 2015-06-09 Faurecia Bloc Avant Energy absorption device with fibers embedded in a plastic material, and associated front face
EP2889187A2 (en) 2013-12-24 2015-07-01 Toyota Jidosha Kabushiki Kaisha Vehicle body impact absorption structure
JP2015120420A (en) * 2013-12-24 2015-07-02 トヨタ自動車株式会社 Impact absorption structure of vehicle body
EP2889187A3 (en) * 2013-12-24 2015-07-08 Toyota Jidosha Kabushiki Kaisha Vehicle body impact absorption structure
US9539967B2 (en) 2013-12-24 2017-01-10 Toyota Jidosha Kabushiki Kaisha Vehicle body impact absorption structure
EP2915703A1 (en) * 2014-03-07 2015-09-09 Toyota Jidosha Kabushiki Kaisha Front structure of vehicle body
CN104890735A (en) * 2014-03-07 2015-09-09 丰田自动车株式会社 Front structure of vehicle body
US20150251613A1 (en) * 2014-03-07 2015-09-10 Toyota Jidosha Kabushiki Kaisha Front structure of vehicle body

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