Pedestrian protection airbag device
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0743722
(2008-11-18)
|
등록번호 |
US-8186472
(2012-05-29)
|
우선권정보 |
JP-2007-300747 (2007-11-20); JP-2008-287095 (2008-11-07) |
국제출원번호 |
PCT/JP2008/070942
(2008-11-18)
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§371/§102 date |
20100519
(20100519)
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국제공개번호 |
WO2009/066660
(2009-05-28)
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발명자
/ 주소 |
- Okamoto, Yutaka
- Kikuchi, Yuji
- Kamiji, Koichi
|
출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
2 인용 특허 :
5 |
초록
▼
A pedestrian protection airbag device is provided in which an airbag (34) having a closed cross section is formed by inflating and deploying a front outer panel (16) and a front inner panel (18) of a front pillar (15) by means of high pressure gas generated by an inflator (26). This enables the head
A pedestrian protection airbag device is provided in which an airbag (34) having a closed cross section is formed by inflating and deploying a front outer panel (16) and a front inner panel (18) of a front pillar (15) by means of high pressure gas generated by an inflator (26). This enables the head of a pedestrian to be protected from an impact due to collision with the front pillar (15). Furthermore, since impact absorption performance is exhibited by plastic deformation of the deployed airbag (34), as long as deployment of the airbag (34) is completed before restraining the pedestrian, it is unnecessary to subsequently control the internal pressure of the airbag (34), and it becomes possible for an effective impact absorption performance to always be exhibited regardless of the vehicle speed at the time of collision or the physique of the pedestrian while simplifying the specification of the inflator (26) and reducing the cost.
대표청구항
▼
1. A pedestrian protection airbag device arranged at a front pillar of a vehicle, said device comprising a metal airbag having a closed cross section and comprising an exposed portion and an expansion portion, said exposed portion serving as a visibly exposed decorative surface of the front pillar,
1. A pedestrian protection airbag device arranged at a front pillar of a vehicle, said device comprising a metal airbag having a closed cross section and comprising an exposed portion and an expansion portion, said exposed portion serving as a visibly exposed decorative surface of the front pillar, said expansion portion being invisibly covered and expandably folded, the airbag being inflated by high pressure gas generated by an inflator at the time of a collision of the vehicle to thus protect a pedestrian from the impact of the collision, wherein said decorative surface is arranged for providing, in cooperating with a molding, a connection between an outer edge in a vehicle width direction of a front windshield and a front edge of a front door. 2. The pedestrian protection airbag device according to claim 1, wherein at least part of the inflator is housed in the interior of the airbag. 3. The pedestrian protection airbag device according to claim 1, wherein the airbag forms a substantially cylindrical shape in a deployed state. 4. The pedestrian protection airbag device according to claim 3, wherein the airbag is formed by joining a first metal member forming the exposed portion and a second metal member forming the expansion portion. 5. The pedestrian protection airbag device according to claim 4, wherein the second metal member is one second metal member and further comprising an other second metal member, wherein the airbag is formed by providing a connection between the inflator and opposite edges of the first metal member by the second metal members. 6. The pedestrian protection airbag device according to claim 4, wherein the exposed portion and the expansion portion of the airbag are formed integrally by roll forming or extrusion molding. 7. A pedestrian protection airbag device comprising a metal airbag having a closed cross section and comprising an exposed portion that is visibly exposed and an expansion portion that is invisibly covered and expandably folded, the airbag being inflated by high pressure gas generated by an inflator at the time of a collision of a vehicle to thus protect a pedestrian from the impact of the collision, wherein the exposed portion of the airbag forms a decorative surface of a front pillar, wherein the airbag forms a substantially cylindrical shape in a deployed state, wherein the airbag is formed by joining a first metal member forming the exposed portion and a second metal member forming the expansion portion, wherein the exposed portion and the expansion portion of the airbag are formed integrally by roll forming or extrusion molding, wherein the airbag forms part of the front pillar, the inflator is disposed in a middle part in a vehicle width direction of the expansion portion, and a part of the expansion portion that is further inside in the vehicle width direction than the inflator is folded in a vehicle body fore-and-aft direction so that the folds overlap one another. 8. The pedestrian protection airbag device according to claim 7, wherein a part of the expansion portion that is further outside in the vehicle width direction than the inflator is made to follow a rear face of the exposed portion. 9. The pedestrian protection airbag device according to claim 8, wherein the exposed portion covers a section between an outer edge in a vehicle width direction of a front windshield and a front edge of a front door. 10. A pedestrian protection airbag device comprising a metal airbag having a closed cross section and comprising an exposed portion that is visibly exposed and an expansion portion that is invisibly covered and expandably folded, the airbag being inflated by high pressure gas generated by an inflator at the time of a collision of a vehicle to thus protect a pedestrian from the impact of the collision, wherein the exposed portion of the airbag forms a decorative surface of a front pillar, wherein the airbag forms a substantially cylindrical shape in a deployed state, wherein the airbag is formed by joining a first metal member forming the exposed portion and a second metal member forming the expansion portion, wherein the exposed portion and the expansion portion of the airbag are formed integrally by roll forming or extrusion molding, wherein the front pillar comprises a front pillar main body which includes a front face that is parallel to a front windshield and a side face that curves from the front face toward the rear of a vehicle body, the inflator is disposed on the front face, and a part of the expansion portion that is further outside in a vehicle width direction than the inflator comprises a first portion that extends along a rear face of the exposed portion at a position far from the inflator and a second portion that is folded in a zig-zag manner in the vehicle width direction at a position close to the inflator. 11. The pedestrian protection airbag device according to claim 10, wherein a middle part of the first portion is curved rearward so as to abut against the side face of the front pillar main body.
이 특허에 인용된 특허 (5)
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Inoue, Michio; Suzuki, Shigeyuki, Air bag device for pedestrian.
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Shawn Gregory Ryan ; Matthew A Ault ; Steven Aurel Damian, Automotive hood of inflatable character.
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Takimoto,Takayuki, Externally developed airbag device.
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Nohr Matthias,DEX ; Mehren Herbert,DEX, Impact absorbing outer body structure of a motor vehicle.
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Galbraith Lyle D. (Redmond WA) Italiane John R. (Seattle WA), Inflatable metal bladders for automobile passenger protection.
이 특허를 인용한 특허 (2)
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Okamoto, Yutaka; Ochiai, Fumiharu; Kikuchi, Yuji; Ikeda, Koji, Airbag device.
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Okamoto, Yutaka; Drake, Eric; Pipkorn, Bengt, Airbag system.
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