JP3966777B2 - Crew restraint system - Google Patents

Crew restraint system Download PDF

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Publication number
JP3966777B2
JP3966777B2 JP2002191930A JP2002191930A JP3966777B2 JP 3966777 B2 JP3966777 B2 JP 3966777B2 JP 2002191930 A JP2002191930 A JP 2002191930A JP 2002191930 A JP2002191930 A JP 2002191930A JP 3966777 B2 JP3966777 B2 JP 3966777B2
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JP
Japan
Prior art keywords
protection area
airbag
occupant
vent hole
chamber
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.)
Expired - Fee Related
Application number
JP2002191930A
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Japanese (ja)
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JP2004034766A (en
Inventor
康二 池田
文俊 安原
史治 落合
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.)
Honda Motor Co Ltd
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Honda Motor Co Ltd
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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP2002191930A priority Critical patent/JP3966777B2/en
Priority to US10/465,024 priority patent/US6932386B2/en
Priority to CNB031457142A priority patent/CN1250412C/en
Publication of JP2004034766A publication Critical patent/JP2004034766A/en
Application granted granted Critical
Publication of JP3966777B2 publication Critical patent/JP3966777B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、車体のドア開口部の上縁に沿って折り畳み状態のエアバッグを配置し、車両の衝突時にインフレータが発生するガスでエアバッグを膨張させて車室の側部内面に沿ってカーテン状に展開させる乗員拘束装置に関する。
【0002】
【従来の技術】
かかる乗員拘束装置は、例えば、特開2000−33847号公報、特開平11−235965号公報により公知である。この種の乗員拘束装置のエアバッグはガスの供給を受けて膨張する膨張部を備えており、この膨張部で乗員を拘束するようになっている。
【0003】
【発明が解決しようとする課題】
ところで、エアバッグがベントホールを備えていないと、インフレータからガスの供給を受けたエアバッグが固く膨張するため、乗員を柔らかく拘束することが難しくなる可能性があって乗員が受けるピーク加速度が増加するだけでなく、乗員がエアバッグに跳ね返されるリバウンド現象が発生する可能性がある。そこでエアバッグ内のガスの一部をベントホールから逃がしてエアバッグの内圧が過剰になるのを防止しているが、ベントホールを設けるとエアバッグ内のガスの保持ができないため、乗員を拘束したときの荷重でエアバッグが過剰に収縮して乗員を拘束できる時間が短くなってしまう可能性がある。
【0004】
本発明は前述の事情に鑑みてなされたもので、車室の側部内面に沿ってカーテン状に展開するエアバッグから乗員が受けるピーク加速度を減少させてリバウンド現象の発生を回避しながら、エアバッグの過剰な収縮を防止して充分な乗員拘束時間を確保することを目的とする。
【0005】
【課題を解決するための手段】
上記目的を達成するために、請求項1に記載された発明によれば、車体のドア開口部の上縁に沿って折り畳み状態のエアバッグを配置し、車両の衝突時にインフレータが発生するガスでエアバッグを膨張させて車室の側部内面に沿ってカーテン状に展開させる乗員拘束装置において、エアバッグは、それぞれ膨張部が形成された前部保護エリアおよび後部保護エリアと、前記前部保護エリアおよび前記後部保護エリアの上部間を連通させる上部連通路と、前記前部保護エリアおよび前記後部保護エリアに隣接するように形成された副室とを備え、前記膨張部の少なくとも一つの下端はベントホールを介して前記副室の下端に連通し、前記副室は前記前部保護エリア、前記後部保護エリアおよび前記上部連通路の間に区画される後席側副室と、前記前部保護エリアの前方に区画される前席側副室とで構成されることを特徴とする乗員拘束装置が提案される。
【0006】
上記構成によれば、車室の側部内面に沿ってカーテン状に展開するエアバッグが、それぞれ膨張部が形成された前部保護エリアおよび後部保護エリアと、前部保護エリアおよび後部保護エリアの上部間を連通させる上部連通路と、前部保護エリアおよび後部保護エリアに隣接するように形成された副室とを備えており、膨張部の少なくとも一つがベントホールを介して副室に連通するので、膨張したエアバッグが乗員を拘束した荷重で膨張部の内圧が高まると、膨張部のガスの一部がベントホールを介して副室に流入することで膨張部の圧力が低下し、乗員が受けるピーク加速度を減少させてリバウンド現象の発生を回避することができる。しかもベントホールを通過したガスは大気に放散されることなく容積が限られた副室に流入するので、乗員を拘束した荷重でエアバッグが過剰に収縮するのを防止して充分な乗員拘束時間を確保するができる。
【0007】
またベントホールがエアバッグの外部に開口していないので、ベントホールが車体や乗員によって閉塞されて機能を発揮できなくなったり、ベントホールから排出されたガスが乗員に直接当たったりすることが防止される。更に、前部保護エリア、後部保護エリアおよび上部連通路の間に区画される後席側副室と、前部保護エリアの前方に区画される前席側副室との二つを設けたので、副室の容積を充分に確保することができる。
【0008】
【発明の実施の形態】
以下、本発明の参考例および実施例を、添付図面に基づいて説明する。
【0009】
図1〜図6は本発明の参考例を示すもので、図1は自動車の車室内部に乗員拘束装置のエアバッグが展開した状態を示す図、図2はエアバッグが展開した乗員拘束装置の拡大図、図3は図2の部分拡大図、図4は図3の4−4線断面図、図5は図3の5−5線断面図、図6は時間の経過に伴うエアバッグの内圧の変化を示すグラフである。
【0010】
図1に示すように、車両の車体側面にはフロントピラー11およびセンターピラー12間にフロントドア13が取り付けられるドア開口部14が形成され、センターピラー12およびリヤピラー15間にリヤドア16が取り付けられるドア開口部17が形成される。フロントピラー11の上端とリヤピラー15の上端とを接続するように車体前後方向に延びるルーフサイドレール(図示せず)はフロントドア13およびリヤドア16のドア開口部14,17の上縁を区画しており、このルーフサイドレールに沿って乗員拘束装置Cが設けられる。尚、乗員拘束装置Cは、実質的に同一構造のものが車体の左右両側にそれぞれ設けられているが、以下その代表として車体の右側に設けられたものについて説明する。
【0011】
車両の側面衝突時あるいはロールオーバー時に所定値以上の加速度が検出されると、車体の内部側面、即ちフロントピラー11、センターピラー12、リヤピラー15、フロントドア13のドアガラス13aおよびリヤドア16のドアガラス16aと、フロントシートおよびリヤシートに座った乗員との間に遮るように、乗員拘束装置Cのエアバッグ18がドア開口部14,17の上縁から下向きにカーテン状に展開する。
【0012】
図2〜図5に示すように、車体前後方向に延びるエアバッグ18は略同一形状の第1基布21および第2基布22を2重に重ね合わせて外周部を縫製23し、かつその内側を所定のパターンに縫製24したものであり、第1、第2基布21,22を縫製23,24した部分にはガスの漏れを防ぐためのシール材25が挟持される。エアバッグ18は、フロントシートの乗員Dの頭部を保護するための前部保護エリア26と、リヤシートの乗員Pの頭部を保護するための後部保護エリア27と、前部保護エリア26および後部保護エリア27間に挟まれた副室28とを備える。
【0013】
前部保護エリア26および後部保護エリア27には、内側の縫製24によって複数の膨張部29…が相互に連通するように形成されており、それら複数の膨張部29…はエアバッグ18の上縁に沿って前後方向に延びる上部連通路30に連通する。そして前部保護エリア26の下部後端がベントホール31を介して副室28に連通する。
【0014】
リヤピラー15の内部に収納されたインフレータ33から前方に延びるガス供給パイプ34の前部は上部連通路30内に挿入され、ガス供給パイプ34の先端と、その中間部外周に形成した開口34a…とから噴出するガスが、上部連通路30から各膨張部29…に分配される。
【0015】
図1に示すように、前部側突センサ41および後部側突センサ42が電子制御ユニット43に接続されており、電子制御ユニット43が両側突センサ41,42からの信号に基づいて車両の側面衝突(あるいは車両のロールオーバー)を検知すると、エアバッグ18を展開すべくインフレータ33に作動信号を出力する。
【0016】
次に、上記構成を備えた参考例の作用について説明する。
【0017】
前部側突センサ41および後部側突センサ42によって車両の側面衝突やロールオーバーが検知されると電子制御ユニット43からの指令でインフレータ33が作動し、インフレータ33内に蓄圧されていたガスがガス供給パイプ34および上部連通路30を経て前部保護エリア26および後部保護エリア27の膨張部29…に流入する。その結果、折り畳み状態でルーフサイドレールに沿って収納されていたエアバッグ18の膨張部29…が膨張し、その圧力でルーフガーニッシュが下方に押し下げられて形成された開口を通して、エアバッグ18が車室内に下向きに展開する。展開したエアバッグ18の前部保護エリア26はフロントシートの乗員Dと車室内壁との間に介在して乗員Dの頭部を保護し、後部保護エリア27はリヤシートの乗員Pと車室内壁との間に介在して乗員Pの頭部を保護する。
【0018】
このようにして展開したエアバッグ18が乗員D,Pの頭部を拘束することで膨張部29…の内圧が高まると、膨張部29…内のガスの一部がベントホール31を介して副室28内に流入することで該膨張部29…の内圧が若干低下するため、乗員D,Pがエアバッグ18に拘束された際に受けるピーク加速度を減少させるとともに、乗員D,Pがエアバッグ18に跳ね返されるリバウンド現象の発生を回避することができる。更に、ベントホール31を通過したガスは大気に放散されることなく容積が限られた副室28に溜められるので、エアバッグ18が乗員を拘束した荷重で過剰に収縮するのを防止し、その後も展開状態を維持して乗員D,Pを確実に拘束することができる。
【0019】
またベントホール31がエアバッグ18の外部に開口せずに閉じられた副室28に開口しているので、ベントホール31が車体内面や乗員によって閉塞されてガス排出機能を発揮できなくなったり、ベントホール31から排出されたガスが乗員に直接当たったりすることが防止される。
【0020】
図6から明らかなように、従来のベントホールを全くを持たないエアバッグは内圧が過剰に高い状態に維持され、また従来の大気開放のベントホールを持つエアバッグは内圧が急激に低下してしまうが、本参考例の副室28に開放するベントホール31を持つものでは、エアバッグ18の内圧が継続的に適切な値に保持されることが分かる。
【0021】
次に、図7に基づいて本発明の実施例を説明する。
【0022】
施例は、前部保護エリア26および後部保護エリア27間に挟まれた後席側副室28に加えて、前部保護エリア26の前方にも前席側副室28を備えており、容積の大きい前部保護エリア26の膨張部29…は2個のベントホール31,31を介して2個の副室28,28に連通する。この施例によれば、2個の副室28,28を設けたことにより、その容積を充分に確保することができる。実施例のその他の構成および効果は、上述した参考例の構成および効果と同一である。
【0023】
以上、本発明の実施例を詳述したが、本発明はその要旨を逸脱しない範囲で種々の設計変更を行うことが可能である。
【0024】
例えば、実施例では第1、第2基布21,22を縫製23,24してエアバッグ18を構成しているが、それを接着やジャガード織り(シームレス)で構成することができる。
【0025】
【発明の効果】
以上のように請求項1に記載された発明によれば、車室の側部内面に沿ってカーテン状に展開するエアバッグが、それぞれ膨張部が形成された前部保護エリアおよび後部保護エリアと、前部保護エリアおよび後部保護エリアの上部間を連通させる上部連通路と、前部保護エリアおよび後部保護エリア間に形成された副室とを備えており、膨張部の少なくとも一つがベントホールを介して副室に連通するので、膨張したエアバッグが乗員を拘束した荷重で膨張部の内圧が高まると、膨張部のガスの一部がベントホールを介して副室に流入することで膨張部の圧力が低下し、乗員が受けるピーク加速度を減少させてリバウンド現象の発生を回避することができる。しかもベントホールを通過したガスは大気に放散されることなく容積が限られた副室に流入するので、乗員を拘束した荷重でエアバッグが過剰に収縮するのを防止して充分な乗員拘束時間を確保するができる。
【0026】
またベントホールがエアバッグの外部に開口していないので、ベントホールが車体や乗員によって閉塞されて機能を発揮できなくなったり、ベントホールから排出されたガスが乗員に直接当たったりすることが防止される。更に、前部保護エリア、後部保護エリアおよび上部連通路の間に区画される後席側副室と、前部保護エリアの前方に区画される前席側副室との二つを設けたので、副室の容積を充分に確保することができる。
【図面の簡単な説明】
【図1】 参考例に係る自動車の車室内部に乗員拘束装置のエアバッグが展開した状態を示す図
【図2】 エアバッグが展開した乗員拘束装置の拡大図
【図3】 図2の部分拡大図
【図4】 図3の4−4線断面図
【図5】 図3の5−5線断面図
【図6】 時間の経過に伴うエアバッグの内圧の変化を示すグラフ
【図7】 本発明の実施例に係る、前記図2に対応する図
【符号の説明】
14 ドア開口部
17 ドア開口部
18 エアバッグ
26 前部保護エリア
27 後部保護エリア
28 前席側副室
28R 後席側副室
29 膨張部
30 上部連通路
31 ベントホール
33 インフレータ
[0001]
BACKGROUND OF THE INVENTION
According to the present invention, a folded airbag is disposed along the upper edge of the door opening of the vehicle body, and the airbag is inflated with gas generated by an inflator at the time of a vehicle collision so that a curtain is formed along the inner surface of the side portion of the passenger compartment. The present invention relates to an occupant restraint device that is deployed in a shape.
[0002]
[Prior art]
Such an occupant restraint device is known, for example, from Japanese Patent Laid-Open No. 2000-33847 and Japanese Patent Laid-Open No. 11-235965. The airbag of this kind of passenger restraint device is provided with an inflating portion that inflates when supplied with gas, and the inflating portion restrains the passenger.
[0003]
[Problems to be solved by the invention]
By the way, if the airbag does not have a vent hole, the airbag supplied with gas from the inflator will inflate hard, which may make it difficult to restrain the occupant softly and increase the peak acceleration received by the occupant In addition, there is a possibility that a rebound phenomenon occurs in which the occupant is bounced back to the airbag. Therefore, a part of the gas in the airbag is released from the vent hole to prevent the air bag's internal pressure from becoming excessive. However, if the vent hole is provided, the gas in the airbag cannot be retained, and the passenger is restrained. There is a possibility that the time during which the airbag can be excessively contracted by the load and the occupant can be restrained is shortened.
[0004]
The present invention has been made in view of the above-described circumstances, and reduces the peak acceleration received by an occupant from an airbag that is deployed in a curtain shape along the inner side surface of a passenger compartment, thereby avoiding the occurrence of a rebound phenomenon. The purpose is to prevent excessive shrinkage of the bag and to ensure sufficient occupant restraint time.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a folded airbag is arranged along the upper edge of the door opening of the vehicle body, and the gas generated by the inflator at the time of vehicle collision is used. In an occupant restraint device that inflates an airbag and deploys in a curtain shape along a side inner surface of a passenger compartment, the airbag includes a front protection area and a rear protection area each having an inflated portion, and the front protection. An upper communication path communicating between the area and the upper part of the rear protection area , and a sub chamber formed adjacent to the front protection area and the rear protection area , at least one lower end of the expansion part is communicating with the lower end of the auxiliary chamber through the vent hole, wherein the auxiliary chamber has a seat sub-chamber after defined between the said front protection area, said rear protective area and the upper communicating passage Occupant restraint system is proposed, characterized in that consists of a seat sub-chamber before being partitioned in front of the front protective area.
[0006]
According to the above configuration, the airbag deployed in a curtain shape along the side inner surface of the passenger compartment includes the front protection area and the rear protection area in which the inflating portions are formed, and the front protection area and the rear protection area, respectively. An upper communication path that communicates between the upper parts and a sub chamber formed adjacent to the front protection area and the rear protection area are provided, and at least one of the expansion parts communicates with the sub chamber via the vent hole. Therefore, when the internal pressure of the inflatable portion increases due to the load in which the inflated airbag restrains the occupant, part of the gas in the inflatable portion flows into the sub chamber through the vent hole, so that the pressure in the inflatable portion decreases, and the occupant It is possible to avoid the occurrence of a rebound phenomenon by reducing the peak acceleration received by. In addition, the gas that has passed through the vent hole flows into the sub-chamber with a limited volume without being dissipated to the atmosphere. Can be ensured.
[0007]
In addition, since the vent hole is not opened outside the airbag, it is prevented that the vent hole is blocked by the vehicle body or the occupant and cannot function or the gas discharged from the vent hole does not directly hit the occupant. The In addition, because there are two rear seat side sub-chamber partitioned between the front protection area, the rear protection area and the upper communication path, and the front seat side sub-chamber partitioned in front of the front protection area A sufficient volume of the sub chamber can be secured.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, Reference Examples and Examples of the present invention will be described based on the accompanying drawings.
[0009]
1 to 6 show a reference example of the present invention. FIG. 1 is a view showing a state in which an airbag of an occupant restraint device is deployed in a vehicle interior, and FIG. 2 is an occupant restraint device in which the airbag is deployed. 3 is a partially enlarged view of FIG. 2, FIG. 4 is a sectional view taken along line 4-4 of FIG. 3, FIG. 5 is a sectional view taken along line 5-5 of FIG. 3, and FIG. It is a graph which shows the change of internal pressure.
[0010]
As shown in FIG. 1, a door opening 14 to which a front door 13 is attached is formed between a front pillar 11 and a center pillar 12 on a side surface of the vehicle body, and a rear door 16 is attached between the center pillar 12 and the rear pillar 15. An opening 17 is formed. A roof side rail (not shown) extending in the longitudinal direction of the vehicle body so as to connect the upper end of the front pillar 11 and the upper end of the rear pillar 15 defines the upper edges of the door openings 14 and 17 of the front door 13 and the rear door 16. An occupant restraint device C is provided along the roof side rail. The occupant restraint device C having substantially the same structure is provided on each of the left and right sides of the vehicle body. Hereinafter, the occupant restraint device C provided on the right side of the vehicle body will be described.
[0011]
When acceleration of a predetermined value or more is detected at the time of side collision or rollover of the vehicle, the inner side surface of the vehicle body, that is, the front pillar 11, the center pillar 12, the rear pillar 15, the door glass 13a of the front door 13, and the door glass of the rear door 16. The airbag 18 of the occupant restraint device C is deployed in a curtain shape downward from the upper edges of the door openings 14 and 17 so as to be shielded between 16a and the occupant sitting on the front seat and the rear seat.
[0012]
As shown in FIGS. 2 to 5, the airbag 18 extending in the longitudinal direction of the vehicle body has a first base fabric 21 and a second base fabric 22 having substantially the same shape overlapped with each other, and an outer peripheral portion is sewn 23. The inner side is sewn 24 in a predetermined pattern, and a seal material 25 for preventing gas leakage is sandwiched between the parts 23 and 24 where the first and second base fabrics 21 and 22 are sewn. The airbag 18 includes a front protection area 26 for protecting the head of the occupant D on the front seat, a rear protection area 27 for protecting the head of the occupant P on the rear seat, and the front protection area 26 and the rear part. And a sub chamber 28 sandwiched between the protection areas 27.
[0013]
The front protection area 26 and the rear protection area 27 are formed such that a plurality of inflating portions 29 are communicated with each other by the inner sewing 24, and the plurality of inflating portions 29. And communicates with the upper communication path 30 extending in the front-rear direction. The lower rear end of the front protection area 26 communicates with the sub chamber 28 via the vent hole 31.
[0014]
The front portion of the gas supply pipe 34 extending forward from the inflator 33 housed in the rear pillar 15 is inserted into the upper communication path 30, and the tip of the gas supply pipe 34 and the opening 34a formed on the outer periphery of the intermediate portion thereof. Is ejected from the upper communication passage 30 to the respective expansion portions 29.
[0015]
As shown in FIG. 1, a front-side collision sensor 41 and a rear-side collision sensor 42 are connected to an electronic control unit 43, and the electronic control unit 43 is connected to a side surface of the vehicle based on signals from both-side collision sensors 41, 42. When a collision (or vehicle rollover) is detected, an operation signal is output to the inflator 33 to deploy the airbag 18.
[0016]
Next, the operation of the reference example having the above configuration will be described.
[0017]
When a side collision or rollover of the vehicle is detected by the front side collision sensor 41 and the rear side collision sensor 42, the inflator 33 is activated by a command from the electronic control unit 43, and the gas accumulated in the inflator 33 is gas. It flows into the expansion portions 29 of the front protection area 26 and the rear protection area 27 through the supply pipe 34 and the upper communication passage 30. As a result, the inflated portion 29 of the airbag 18 stored along the roof side rail in the folded state is inflated, and the airbag 18 is moved through the opening formed by the roof garnish being pushed downward by the pressure. Deploy downwards indoors. The front protection area 26 of the deployed airbag 18 is interposed between the front seat occupant D and the vehicle interior wall to protect the head of the occupant D, and the rear protection area 27 is the rear seat occupant P and the vehicle interior wall. And the head of the occupant P is protected.
[0018]
When the airbag 18 deployed in this manner restrains the heads of the passengers D and P to increase the internal pressure of the inflating portions 29..., A part of the gas in the inflating portions 29. By flowing into the chamber 28, the internal pressure of the inflating portions 29 is slightly reduced, so that the peak acceleration received when the occupants D and P are restrained by the airbag 18 is reduced, and the occupants D and P are airbags. It is possible to avoid the occurrence of the rebound phenomenon bounced back to 18. Further, since the gas that has passed through the vent hole 31 is not diffused into the atmosphere but is stored in the sub chamber 28 having a limited volume, the airbag 18 is prevented from being excessively contracted by a load restraining the occupant, and thereafter Also, the occupants D and P can be reliably restrained while maintaining the deployed state.
[0019]
Further, since the vent hole 31 is opened in the closed sub chamber 28 without opening to the outside of the airbag 18, the vent hole 31 is blocked by the inner surface of the vehicle body or the occupant and cannot perform the gas discharge function. It is possible to prevent the gas discharged from the hall 31 from directly hitting the passenger.
[0020]
As is apparent from FIG. 6, the conventional airbag having no vent hole is maintained at an excessively high internal pressure, and the conventional airbag having a vent hole opened to the atmosphere has its internal pressure drastically decreased. However, it can be seen that the internal pressure of the airbag 18 is continuously maintained at an appropriate value when the vent hole 31 is opened in the sub chamber 28 of this reference example .
[0021]
Next, the actual施例of the present invention will be described with reference to FIG.
[0022]
Real施例, in addition to the seat-side auxiliary chamber 28 R after sandwiched between the front protection area 26 and rear protective area 27, before the front of the front protective area 26 includes a seat antechamber 28 F The expansion portions 29 of the front protection area 26 having a large volume communicate with the two sub chambers 28 R and 28 F via the two vent holes 31 and 31. According to the actual施例, by providing the two sub-chambers 28 R, 28 F, it can be sufficiently secured in volume. Other configurations and effects of the embodiment are the same as those of the reference example described above.
[0023]
As mentioned above, although the Example of this invention was explained in full detail, this invention can perform a various design change in the range which does not deviate from the summary.
[0024]
For example, in the embodiment, the airbag 18 is formed by sewing the first and second base fabrics 21 and 22 and forms the airbag 18, but it can be formed by bonding or jacquard weaving (seamless).
[0025]
【The invention's effect】
As described above, according to the first aspect of the present invention, the airbag deployed in a curtain shape along the inner side surface of the passenger compartment includes the front protection area and the rear protection area in which the inflating portions are respectively formed. An upper communication passage communicating between the upper portions of the front protection area and the rear protection area, and a sub chamber formed between the front protection area and the rear protection area, and at least one of the inflating portions has a vent hole. When the internal pressure of the inflatable portion increases due to the load in which the inflated airbag restrains the occupant, a part of the gas in the inflatable portion flows into the subchamber through the vent hole, thereby communicating with the subchamber. As a result, the peak acceleration received by the occupant is reduced, and the occurrence of the rebound phenomenon can be avoided. In addition, the gas that has passed through the vent hole flows into the sub-chamber with a limited volume without being dissipated to the atmosphere. Can be ensured.
[0026]
In addition, since the vent hole is not opened outside the airbag, it is prevented that the vent hole is blocked by the vehicle body or the occupant and cannot function or the gas discharged from the vent hole does not directly hit the occupant. The In addition, because there are two rear seat side sub-chamber partitioned between the front protection area, the rear protection area and the upper communication path, and the front seat side sub-chamber partitioned in front of the front protection area A sufficient volume of the sub chamber can be secured.
[Brief description of the drawings]
FIG. 1 is a view showing a state in which an airbag of an occupant restraint device is deployed in a vehicle interior of a vehicle according to a reference example . FIG. 2 is an enlarged view of an occupant restraint device in which an airbag is deployed. Fig. 4 is a cross-sectional view taken along line 4-4 in Fig. 3 Fig. 5 is a cross-sectional view taken along line 5-5 in Fig. 3 Fig. 6 is a graph showing changes in the internal pressure of the airbag over time. according to the actual施例of the present invention, Figure [eXPLANATION oF sYMBOLS] corresponding to FIG. 2
14 Door Opening 17 Door Opening 18 Airbag 26 Front Protection Area 27 Rear Protection Area 28 F Front Seat Side Subchamber
28R rear seat side sub chamber 29 inflatable part 30 upper communication path 31 vent hole 33 inflator

Claims (1)

車体のドア開口部(14,17)の上縁に沿って折り畳み状態のエアバッグ(18)を配置し、車両の衝突時にインフレータ(33)が発生するガスでエアバッグ(18)を膨張させて車室の側部内面に沿ってカーテン状に展開させる乗員拘束装置において、
エアバッグ(18)は、それぞれ膨張部(29)が形成された前部保護エリア(26)および後部保護エリア(27)と、前記前部保護エリア(26)および前記後部保護エリア(27)の上部間を連通させる上部連通路(30)と、前記前部保護エリア(26)および前記後部保護エリア(27)に隣接するように形成された副室(28F,28R)とを備え、前記膨張部(29)の少なくとも一つの下端はベントホール(31)を介して前記副室(28F,28R)の下端に連通し、
前記副室(28F,28R)は前記前部保護エリア(26)、前記後部保護エリア(27)および前記上部連通路(30)の間に区画される後席側副室(28R)と、前記前部保護エリア(26)の前方に区画される前席側副室(28F)とで構成されることを特徴とする乗員拘束装置。
A folded airbag (18) is disposed along the upper edge of the door opening (14, 17) of the vehicle body, and the airbag (18) is inflated with the gas generated by the inflator (33) when the vehicle collides. In an occupant restraint device that deploys in the form of a curtain along the inner side of the passenger compartment,
The airbag (18) includes a front protection area (26) and a rear protection area (27) in which an inflating part (29) is formed, respectively, and the front protection area (26) and the rear protection area (27). An upper communication path (30) for communicating between upper parts, and a sub chamber ( 28F, 28R ) formed adjacent to the front protection area (26) and the rear protection area (27) , At least one lower end of the inflating part (29) communicates with the lower end of the sub chamber ( 28F, 28R ) through the vent hole (31),
The sub chamber (28 F, 28 R ) is a rear seat side sub chamber (28 R) partitioned between the front protection area ( 26) , the rear protection area (27), and the upper communication path (30 ). And an occupant restraint device comprising a front seat side sub-chamber (28F) partitioned in front of the front protection area (26) .
JP2002191930A 2002-07-01 2002-07-01 Crew restraint system Expired - Fee Related JP3966777B2 (en)

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JP2002191930A JP3966777B2 (en) 2002-07-01 2002-07-01 Crew restraint system
US10/465,024 US6932386B2 (en) 2002-07-01 2003-06-19 Occupant restraint system including side airbag with vent hole
CNB031457142A CN1250412C (en) 2002-07-01 2003-07-01 Passenger restraniing system allocating side safety air-bag having air vent

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