[go: up one dir, main page]

WO2012158072A1 - Dispositif de protection des impacts pour un véhicule et procédé permettant de fournir une protection antichocs à un véhicule - Google Patents

Dispositif de protection des impacts pour un véhicule et procédé permettant de fournir une protection antichocs à un véhicule Download PDF

Info

Publication number
WO2012158072A1
WO2012158072A1 PCT/SE2011/000086 SE2011000086W WO2012158072A1 WO 2012158072 A1 WO2012158072 A1 WO 2012158072A1 SE 2011000086 W SE2011000086 W SE 2011000086W WO 2012158072 A1 WO2012158072 A1 WO 2012158072A1
Authority
WO
WIPO (PCT)
Prior art keywords
beam element
state
vehicle
expandable
expandable beam
Prior art date
Application number
PCT/SE2011/000086
Other languages
English (en)
Inventor
Bengt PIPCORN
Mattias Ericsson
Original Assignee
Autoliv Development Ab
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 Autoliv Development Ab filed Critical Autoliv Development Ab
Priority to PCT/SE2011/000086 priority Critical patent/WO2012158072A1/fr
Publication of WO2012158072A1 publication Critical patent/WO2012158072A1/fr

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

Definitions

  • the present invention relates to an expandable beam element arranged for being mounted to a vehicle, where the vehicle has a longitudinal extension in its main travelling direction and a normal vehicle ground clearance.
  • the expandable beam element is arranged to be expandable from a first state to a second state.
  • the present invention also relates to a vehicle comprising an expandable beam element, where the vehicle has a longitudinal extension in its main travelling direction and a normal vehicle ground clearance.
  • the expandable beam element is arranged to be expandable from a first state to a second state.
  • the present invention also relates to a method for providing shock protection for a vehicle, the method comprising the steps of detecting a situation associated with a collision and expanding an expandable beam element from a first state to a second state.
  • vehicles are constructed to comprise a framework that is adapted for handling impact situations; some beams should be collapsible and some beams should be as rigid as possible .
  • DE 102008039514 discloses a vehicle structure construction unit where, in the case of an impact, the internal pressure within the structure construction unit is increased such that it is plastically deformed to produce an increased rigidity and/or pressure maintained for increased rigidity.
  • Said object is achieved by means of an expandable beam element arranged for being mounted to a vehicle, where the vehicle has a longitudinal extension in its main travelling direction and a normal vehicle ground clearance.
  • the expandable beam element is arranged to be expandable from a first state to a second state.
  • the expandable beam element is furthermore arranged to be mounted to the vehicle such that the normal vehicle ground clearance is reduced to a reduced vehicle ground clearance when the mounted expandable beam element expands from the first state to the second state.
  • Said object is also achieved by means of a vehicle comprising an expandable beam element, where the vehicle has a longitudinal extension in its main travelling direction and a normal vehicle ground clearance.
  • the expandable beam element is arranged to be expandable from a first state to a second state.
  • the expandable beam element is furthermore mounted to the vehicle such that the normal vehicle ground clearance is reduced to a reduced vehicle ground clearance when the mounted expandable beam element expands from the first state to the second state.
  • the term vehicle ground clearance should be considered to be constituted by the shortest distance between the lower side of a stationary vehicle and the ground, where the ground is flat.
  • the wheels, which normally are in contact with the ground should not be considered, but only those parts that are positioned between the respective wheel-pairs.
  • the expandable beam element may have a main extension that runs in any direction relative the longitudinal extension.
  • the vehicle further comprises a first side beam and a second side beam, where the side beams have a respective main extension running along the longitudinal extension.
  • the expandable beam element is here arranged to be mounted between the side beams with a main extension that runs across the longitudinal extension, and thus is essentially perpendicular to the longitudinal extension.
  • the expandable beam element comprises at least one meandered section that is arranged to de-fold when the mounted expandable beam element expands from the first state to the second state.
  • the expansion may be driven by a pyrotechnical device.
  • the expanded expandable beam element mainly forms a cylinder which runs between the side beams .
  • the expandable beam element is arranged to expand from the first state to the second state in association with the occurrence of a collision, either before the collision or at the collision.
  • Said object is also achieved by means of a method for providing shock protection for a vehicle, the method comprising the steps of detecting a situation associated with a collision and expanding an expandable beam element from a first state to a second state.
  • the method further comprises the step of partly using a vehicle normal ground clearance as expansion space, such that the normal vehicle ground clearance is reduced to a reduced vehicle ground clearance when the mounted expandable beam element expands from the first state to the second state.
  • the present invention enables the expansion to mainly be directed downwards, from the vehicle towards the ground, which means that the expandable beam element normally is mounted outside the vehicle compartment.
  • the expandable beam element can be added to the vehicle after the cataphoresis process and can easily be replaced if needed.
  • the vehicle ground clearance is used at the occurrence of a collision only, not interfering with the normal vehicle ground clearance otherwise.
  • the expandable beam element according to the present invention presents an obtainable rigidity that is increased in relation to prior solutions.
  • the vehicle ground clearance is reduced, but not removed, some vehicle ground clearance remaining. In other words, when the expandable beam element is expanded, it is not intended to contact the ground.
  • the reduced vehicle ground clearance is thus larger than zero.
  • the normal vehicle ground clearance is larger than the reduced vehicle ground clearance.
  • the expandable beam element When the expandable beam element expands, it expands beyond the lower part of the underside of a vehicle, protruding towards the ground.
  • Figure 1 shows a schematical side view of a vehicle equipped with the expandable beam element according to the present invention in a first state
  • Figure 2 shows a schematical side view of a vehicle equipped with the expandable beam element according to the present invention in a second state
  • Figure 3 shows a schematical partial bottom view of a vehicle equipped with the expandable beam element according to the present invention in a first state
  • Figure 4 shows a schematical partial perspective view of the expandable beam element according to the present invention, without gables, in a first state
  • Figure 5 shows a schematical partial perspective view of the expandable beam element according to the present invention, without gables, in a second state
  • Figure 6 shows a flowchart for a method according to the present invention
  • Figure 7 shows a schematical partial perspective view of the expandable beam element according to the present invention, with gables, in a first state.
  • an expandable beam element 1 is mounted to the bottom of a vehicle 2.
  • the vehicle 2 has a longitudinal extension L in its main travelling direction and a normal vehicle ground clearance Gl.
  • the normal vehicle ground clearance Gl is constituted by the closest distance between the vehicle 2 and the ground 10 on which it runs for parts that are not in contact with the ground, such as the wheels 11, 12.
  • vehicle ground clearance should thus be considered to be constituted by the shortest distance between the lower side of a stationary vehicle and the ground, where the ground is flat.
  • the wheels which normally are in contact with the ground, should not be considered, but only those parts that are positioned between the respective wheel-pairs.
  • the normal vehicle ground clearance Gl comprises a distance interval for the vehicle ground clearance during use; the normal vehicle ground clearance Gl may for example change due to the vehicle load and the driving conditions and is not a static measure.
  • the vehicle 2 further comprises a first side beam 3 and a second side beam 4, the side beams 3, 4 having a respective main extension running along the longitudinal extension L.
  • the expandable beam element 1 is mounted between the side beams 3, 4, and has a main extension running across the longitudinal extension L.
  • the expandable beam element 1 has a relatively thin circumferential wall 8 enclosing an inner space 9 where the inner space 9 is arranged to expand when the mounted expandable beam element 1 changes from the first state SI to a second state S2 as shown in Figure 5.
  • the expandable beam element 1 is arranged to be mounted to the vehicle 2 such that the normal vehicle ground clearance Gl is reduced to a reduced vehicle ground clearance G2 when the mounted expandable beam element 1 expands from the first state SI, as shown in Figure 1 and Figure 4, to the second state S2, as shown in Figure 2 and Figure 5.
  • the reduction of vehicle ground clearance is caused by the expandable beam element 1 expanding from the first state SI to the second state S2, and in practice the reduced vehicle ground clearance G2 is constituted by a distance between the part of the expanded expandable beam element that is closest to the ground 10, and the ground 10.
  • the reduced vehicle ground clearance G2 comprises a distance interval for the vehicle ground clearance during use.
  • the vehicle ground clearance is reduced from a normal vehicle ground clearance Gl to a reduced vehicle ground clearance G2 when the expandable beam element 1 expands from the first state SI to the second state S2.
  • the expandable beam element 1 may be made in many forms, for example, with reference to Figure 4, the expandable beam element 1 comprises meandered sections 5, 6 that are arranged to de-fold when the mounted expandable beam element 1 expands from the first state SI to the second state S2.
  • the number of meandered sections 5, 6 may vary, but according to this example there is at least one.
  • a pyrotechnical device 7 is arranged to provide the pressure necessary for expanding the mounted expandable beam element 1 from the first state SI to the second state S2.
  • the pyrotechnical device 7 may be mounted in the expandable beam element 1 as shown in Figure 3, or in any suitable other place.
  • the present invention also relates to a method for providing shock protection for a vehicle, the method comprising the steps:
  • the expandable beam element 1 may be made in many ways except the described example with meandered sections, such as having the circumferential wall running in a rectangular shape or in a wavy shape.
  • the circumferential wall 8 may have a mainly circular shape, such that the expanded expandable beam element 1 mainly forms a cylinder which runs between the side beams 3, 4.
  • the expandable beam element 1 may alternatively be mounted such that it has a main extension that runs along the longitudinal extension L, being mounted in a suitable manner (not shown) .
  • the expandable beam element 1 may have a main extension that runs in any direction relative the longitudinal extension L.
  • the expandable beam element 1 is preferably arranged to expand from the first state SI to the second state S2 in association with the occurrence of a collision, preferably a short time before the actual impact. Any type of suitable pre-collision detection system may be used for providing necessary information regarding an upcoming collision situation .
  • the expandable beam element 1 is preferably arranged with gables, a first gable 16 being indicated at one end of the expandable beam element 1.
  • Another corresponding gable is arranged at the other end of the expandable beam element 1 (not shown in Figure 7) .
  • the gables 16 are arranged to expand with the expandable beam element 1, the gables 16 having a folded configuration and/or flanges 16a, schematically indicated in Figure 7, overlapping a part of the expandable beam element 1.
  • the gables 16 are either part of the expandable beam element 1, or formed from separate pieces of material.
  • the pressure in the expandable beam element 1 when expanding is for example in the range of more than 10 bar, depending on design and material.
  • a conventional airbag is normally pressurized with a pressure of about 1 bar.
  • the expandable beam element 1 may comprise an interior expandable chamber 17, the expandable chamber 17 being arranged to communicate with pressurized air from the pyrotechnical device 7.
  • Such an expandable chamber 17 is preferably made of plastic or fabric. The main advantage using an expandable chamber 17 is that pressure losses in the expandable beam element 1 due to leakage would be reduced.
  • the vehicle ground clearance is reduced, but not removed, some vehicle ground clearance remaining. In other words, when the expandable beam element 1 is expanded, it is not intended to contact the ground.
  • the reduced vehicle ground clearance G2 is thus larger than zero.
  • the normal vehicle ground clearance Gl is larger than the reduced vehicle ground clearance G2.

Landscapes

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

Abstract

La présente invention concerne un élément de poutre expansible (1) conçu pour être fixé à un véhicule (2), le véhicule (2) présentant une extension longitudinale (L) dans sa direction de déplacement principale et une garde au sol de véhicule normale (G1). L'élément de poudre expansible (1) est conçu pour être expansible d'un premier état (S1) à un second état (S2). En outre, l'élément de poutre expansible (1) est conçu pour être fixé au véhicule (2) de telle sorte que la garde au sol de véhicule normale (G1) est réduite à une garde au sol de véhicule réduite (G2) lorsque l'élément de poutre expansible monté (1) s'étend du premier état (S1) au second état (S2). La présente invention concerne un véhicule correspondant et un procédé correspondant.
PCT/SE2011/000086 2011-05-19 2011-05-19 Dispositif de protection des impacts pour un véhicule et procédé permettant de fournir une protection antichocs à un véhicule WO2012158072A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SE2011/000086 WO2012158072A1 (fr) 2011-05-19 2011-05-19 Dispositif de protection des impacts pour un véhicule et procédé permettant de fournir une protection antichocs à un véhicule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2011/000086 WO2012158072A1 (fr) 2011-05-19 2011-05-19 Dispositif de protection des impacts pour un véhicule et procédé permettant de fournir une protection antichocs à un véhicule

Publications (1)

Publication Number Publication Date
WO2012158072A1 true WO2012158072A1 (fr) 2012-11-22

Family

ID=47177176

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2011/000086 WO2012158072A1 (fr) 2011-05-19 2011-05-19 Dispositif de protection des impacts pour un véhicule et procédé permettant de fournir une protection antichocs à un véhicule

Country Status (1)

Country Link
WO (1) WO2012158072A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015009884A1 (de) * 2015-07-29 2017-02-02 Audi Ag Strukturbauteil für ein Fahrzeug
WO2020088920A1 (fr) * 2018-10-31 2020-05-07 Bayerische Motoren Werke Aktiengesellschaft Moyen de support pouvant être rempli de gaz pour un véhicule automobile et véhicule automobile équipé de celui-ci

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5845937A (en) * 1997-02-10 1998-12-08 Morton International, Inc. Structural assembly
WO2001085527A1 (fr) * 2000-05-05 2001-11-15 Elaion Produkter Dispositif de vehicule comprenant des poutres de deformation et procede de regulation de deformation
DE10316847A1 (de) * 2003-04-11 2004-11-11 Dr.Ing.H.C. F. Porsche Ag Unterfahrschutzeinrichtung und Verfahren zum Betreiben einer Unterfahrschutzeinrichtung
JP2006036184A (ja) * 2004-06-21 2006-02-09 Hino Motors Ltd 巻込防止用エアバッグ装置
WO2006120189A1 (fr) * 2005-05-12 2006-11-16 Autoliv Development Ab Dispositif pour renforcer un élément de carrosserie automobile creux et procédé correspondant
DE102008039514A1 (de) * 2008-08-23 2010-02-25 Daimler Ag Einrichtung für ein Strukturbauteil eines Kraftwagens

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5845937A (en) * 1997-02-10 1998-12-08 Morton International, Inc. Structural assembly
WO2001085527A1 (fr) * 2000-05-05 2001-11-15 Elaion Produkter Dispositif de vehicule comprenant des poutres de deformation et procede de regulation de deformation
DE10316847A1 (de) * 2003-04-11 2004-11-11 Dr.Ing.H.C. F. Porsche Ag Unterfahrschutzeinrichtung und Verfahren zum Betreiben einer Unterfahrschutzeinrichtung
JP2006036184A (ja) * 2004-06-21 2006-02-09 Hino Motors Ltd 巻込防止用エアバッグ装置
WO2006120189A1 (fr) * 2005-05-12 2006-11-16 Autoliv Development Ab Dispositif pour renforcer un élément de carrosserie automobile creux et procédé correspondant
DE102008039514A1 (de) * 2008-08-23 2010-02-25 Daimler Ag Einrichtung für ein Strukturbauteil eines Kraftwagens

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015009884A1 (de) * 2015-07-29 2017-02-02 Audi Ag Strukturbauteil für ein Fahrzeug
DE102015009884B4 (de) * 2015-07-29 2018-11-08 Audi Ag Strukturbauteil für ein Fahrzeug
WO2020088920A1 (fr) * 2018-10-31 2020-05-07 Bayerische Motoren Werke Aktiengesellschaft Moyen de support pouvant être rempli de gaz pour un véhicule automobile et véhicule automobile équipé de celui-ci
US11827170B2 (en) 2018-10-31 2023-11-28 Bayerische Motoren Werke Aktiengesellschaft Gas-fillable support means for a motor vehicle and motor vehicle equipped therewith

Similar Documents

Publication Publication Date Title
CN103442954B (zh) 联合气囊模块
US9394005B1 (en) Foot well intrusion deflection systems and related methods and apparatus
US8562016B2 (en) Curtain airbag device and method of manufacturing the same
US20100326782A1 (en) Energy Absorber With Double-Acting Crush Lobes
US9731768B2 (en) Vehicle structural reinforcing device
EP3150445A1 (fr) Structure avant de véhicule comportant un capteur pour détecter une collision de piéton
US9650073B2 (en) Forward portion of vehicle body
US9434335B2 (en) Vehicle front structure
JP2018158631A5 (ja) 無人航空機およびそのエアバッグ装置
JP2017007368A (ja) 歩行者衝突検知センサを備えた車両用バンパ構造
JP4889744B2 (ja) 安全システム
WO2012158072A1 (fr) Dispositif de protection des impacts pour un véhicule et procédé permettant de fournir une protection antichocs à un véhicule
JP2015013558A (ja) 車両用カーテンエアバッグ装置
JP2010155499A (ja) 車両衝突検出装置、乗員拘束システム、車両
JP2011218897A (ja) 車両用構造体
JP5633993B2 (ja) エアバッグ装置
JP6614113B2 (ja) 車両前部構造
US20170313277A1 (en) Vehicle front portion structure equipped with pedestrian airbag device
JP5576054B2 (ja) 荷重吸収構造
JPH0781504A (ja) バンパー型材
JP6367780B2 (ja) サイドエアバッグ装置及びその製造方法
JP5967025B2 (ja) 車両衝突被害軽減システム
TWI779111B (zh) 用於小客車的共用安全區
CN219749959U (zh) 一种车载轮毂包外板总成结构及车辆
JP5556715B2 (ja) 車両

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11865524

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11865524

Country of ref document: EP

Kind code of ref document: A1