JP2004189183A - Air bag device - Google Patents

Air bag device Download PDF

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Publication number
JP2004189183A
JP2004189183A JP2002362528A JP2002362528A JP2004189183A JP 2004189183 A JP2004189183 A JP 2004189183A JP 2002362528 A JP2002362528 A JP 2002362528A JP 2002362528 A JP2002362528 A JP 2002362528A JP 2004189183 A JP2004189183 A JP 2004189183A
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Japan
Prior art keywords
airbag
vehicle
occupant
inflator
lower chamber
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JP2002362528A
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Japanese (ja)
Inventor
Hitoshi Ida
等 井田
Masami Tanaka
昌巳 田中
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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Priority to JP2002362528A priority Critical patent/JP2004189183A/en
Publication of JP2004189183A publication Critical patent/JP2004189183A/en
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  • Air Bags (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air bag device capable of efficiently conducting a confirmation test for obtaining the optimum air bag device corresponding to kind of vehicle. <P>SOLUTION: An air bag module 9 composed of an inflater 7 and an air bag body 8 is incorporated in a seat bag part 2. The air bag body 8 swelling by injection gas from the inflater when a vehicle collides on its side is arranged in a space between an occupant and an inner wall of a vehicle compartment. The air bag body 8 is sewn by overlapping an occupant side cloth part 8a and a cloth part 8b on an inner wall side of the vehicle compartment. A longitudinally sewn part 19 extending vertically at a front side position of the inflater and a laterally sewn part 17 extending toward the front from the inflater are formed in an overlapping part 800 of both cloth parts. An upper side chamber 16 is formed on a front side of the longitudinally sewn part 19 on an upper side of the laterally sewn part 17, and a lower side chamber 15 is formed on a lower side of the laterally sewn part 17. A communicating part 18 for leading injection gas into the upper side chamber from the lower side chamber is formed on a tip side of the laterally sewn part. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は車両がその側方から衝突力を受けたときに、座席に着座している乗員と車室内壁との間にエアバッグ袋体を膨出させ、衝突エネルギを吸収するエアバッグ装置に関する。
【0002】
【従来の技術】
車両の側突時に乗員を保護するため、シートにエアバッグ袋体やエアバッグ袋体をガスにより膨出させるためのインフレータが内蔵されたエアバッグ装置(サイドエアバッグ装置)が従来から知られている。
このようなエアバッグ装置は、着座乗員の側部と、ドア内壁面やドアガラス内面との間の狭い空間に膨出し、ドア内壁面やドアガラス内面と乗員とが当接するのを防止する構造となっている。
図9(a),(b)に、シートクッション部110とシートバッグ部120とを備えた従来のサイドエアバッグ装置を示した。
【0003】
同図において、シートバッグ部120のドア側のサイドサポート部130の内部には、インフレータ150及びエアバッグ袋体160からなるエアバッグモジュール170が収納されている。
車両の側面衝突によってインフレータ150が作動すると、ガスがエアバッグ袋体160に送り込まれ、エアバッグ袋体160はサイドサポート部130を破って外部に膨出し、図9(b)に示すように展開する。
【0004】
ここでインフレータ150からエアバッグ袋体160内にガスが噴出すると、領域a、領域bにおける展開時間、展開ガス圧pa,pbは、図10に示すように、領域aが比較的高まり、領域bが比較的低くなるという特性を示すのが通常である。
このようなサイドエアバッグ装置は、例えば、特開平10−152011号公報(特許文献1)等に開示され、ここでは、特に、エアバッグ袋体の上部室が乗員の頭部との対向位置にまで延出形成され、その膨出時に上部室とシートベルトとが干渉することを防止できるような構成を採っている。
【0005】
【特許文献1】
特開平10−152011号公報
【0006】
【発明が解決しようとする課題】
ところで、着座乗員100と車両の内壁面の隙間、例えば、着座乗員100の腰部側部とドア内壁面との隙間Aや、着座乗員100の肩部側部とドアガラス内面との隙間Bは、車両の大きさ(車格)やデザイン、ドアトリムのデザイン、座席のレイアウトやデザイン等の影響を受け、車種に応じて種々、異なっている。
また、車両の側突時に、車両内壁面がどのような速さで乗員側に進入してくるかといった車両の側突時の挙動についても、車種に応じて種々、異なっている。即ち、この車両内壁面の側突時の挙動は、車両の大きさ(車格)や車両のタイプ、特に、セダンのようにフロアやルーフの低い車両やRV車のようにフロアやルーフの高い車両によって大きく異なり、しかも、車両デザイン(ドアガラスの傾斜等)、ドアトリムのデザイン(肘掛やえぐれ部形状)、座席のレイアト(前後位置)やデザイン等の影響をも受けることとなる。
【0007】
このように各車両毎に、その内壁面とシートとの隙間は大きく相違し、車両内壁面の側突時の挙動も大きく異なる。
このような車両に装着されるサイドエアバッグ装置はそのエアバッグ袋体が展開するタイミングがずれると袋体の衝撃吸収機能を的確に得られず、エアバッグ袋体の展開圧力が低いと、袋体が十分に膨出しないことより、的確な衝撃吸収ができないこととなる。
このように車両に装着されるサイドエアバッグ装置はそのエアバッグ袋体が展開するタイミングや展開する圧力の適性状態が各車種毎に大きく異なることより、車種に応じた最適なエアバッグ袋体やそれに応じたインフレータを設定する必要がある。
【0008】
そこで、車種に応じた最適なサイドエアバッグ装置を得る必要上、種々の大きさ、形状のエアバッグ袋体を複数、試作し、それらに組み合わせる種々のガス圧のインフレータを試作している。その上で、種々のサイドエアバッグ装置は最適な展開タイミングや展開圧力を確認するため、その確認試験が順次実施されるというのが実情である。
この場合、サイドエアバッグ装置のエアバッグ袋体が展開するタイミングや展開する圧力は、図10に示すようなパターンを示し、これら特性線を上下左右に調整して、車種ごとに、それぞれ最適に設定しようとすると、種々の大きさ・形状のエアバッグ袋体を複数、試作するとともに、それに組み合わせる種々のガス圧のインフレータを試作して展開試験を実施する必要があり、莫大な費用、時間が必要となる問題があり、改善が望まれている。
【0009】
本発明は、以上のような課題に基づきなされたもので、車種に応じた最適なエアバッグ装置を得るための確認試験を効率良く行ない得るエアバッグ装置を提供することを目的とする。
【0010】
【課題を解決するための手段】
請求項1の発明は、少なくともインフレータとエアバッグ袋体とからなるエアバッグモジュールを座席のシートバッグ部に内蔵し、車両の側面衝突時に、乗員と車室内壁との間の空間に上記インフレータからの噴出ガスで膨出する上記エアバッグ袋体を配備するようにしたエアバッグ装置において、上記エアバッグ袋体が乗員側布部と車室内壁側布部とを重合して縫製され、同両布部の重合部には上記インフレータの前側位置に上下に延びる縦縫製部が形成されると共に上記インフレータより前方に向けて延出する横縫製部が形成され、上記横縫製部の上側で上記縦縫製部の前側に上側室が形成され、上記横縫製部の下側に下側室が形成され、上記横縫製部の先端側に上記噴出ガスを下側室から上側室へ導く連通部を形成したことを特徴とする。
このようにエアバッグ袋体の重合部に横縫製部の上側で縦縫製部の前側に上側室を、横縫製部の下側に下側室を、横縫製部の先端側に連通部を形成したので、これら縦縫製部を調整することでエアバッグ袋体の容量を調整してエアバッグ袋体のガス圧を調整でき、横縫製部及び縦縫製部を調整することで上側室や下側室の容量を調整して着座する乗員を確実に保護することができ、連通部の形状を変形調整して下側室から上側室へ導くガスの流動量を容易に調整できるので、車種に応じて最適なエアバッグ装置を得るための確認試験を効率良く行なえる。
【0011】
請求項2の発明は、請求項1記載のエアバッグ装置装置において、上記エアバッグ袋体の下側室が座席に着座する乗員の腰部と対向するように形成されたことを特徴とする。
このように、エアバッグ袋体の下側室が座席に着座する乗員の腰部と対向するので、下側室の膨張タイミングを早めるように連通部の形状を設定することで、早期に乗員の腰部に下側室を当接させ、乗員の体形に合わせた形状にエアバッグ袋体を膨出でき、乗員の体に向けてドア等の内壁が接近してきた際に、エアバッグ袋体が安定して乗員の体を覆い、2次衝突を容易に免れるようにでき、安全性が向上する。
【0012】
【発明の実施の形態】
図1乃至図4には本発明の実施形態としてのエアバッグ装置を示した。
このエアバッグ装置は不図示の車両の車室R内に装着され、シートクッション部1とシートバッグ部2とからなる助手席用のシートSに装着され、車室内壁を成すドアDとシートSとの隙間に展開可能に形成される。
シートバッグ部2は、シートフレーム3と、このシートフレーム3に固定されたスプリング材4と、これらに支持されるクッションパッド材5と、これらを被覆する第1の表皮部材6とから主に構成されている。
【0013】
図3(b)において、シートバッグ部2の車外側であるドアD側のサイドサポート部spの内部には、インフレータ7及びエアバッグ袋体8からなるエアバッグモジュール9がクッションパッド材5の裏面側に配設されて収納されている。
エアバッグモジュール9からエアバッグ袋体8が膨出する部位は、クッションパッド材5で覆われるとともに、シートバッグ部2の表面を覆う表皮部材6の前面表皮6aと側面表皮6bとを角部において縫製する縫製部6cにより閉塞されている。なお、側面表皮6bの後端部は屈曲して延出し、後面表皮6dとして左右のサイドサポート部spの裏側間に張設されている。
【0014】
図1に示すように、シートバッグ部2のサイドサポート部spの上下方向の略中間部、さらに詳述すると、図3(a)に断面矢視Z−Zで示す位置であって、乗員がシートクッション部1に着座したとき、その乗員の胴部高さ部位に位置するクッション材5には内側に凹陥部10が設けられている。
凹陥部10の内部には、エアバッグモジュール9が内蔵されている。このエアバッグモジュール9は、シートフレーム3の側部において、縦方向に延びるフレーム構成部材3aに上下方向に亘って固定された板金製のベース11を有しており、このベース11はフレーム構成部材3aにボルト止めされる。
【0015】
ベース11には、窒素ガス等を発生させる膨張手段としてのインフレータ7を把持固定するためのリテーナ12と、このリテーナ12を包むようにアウタケース13とがそれぞれ設けられている。
エアバッグモジュール9にはエアバッグ袋体8が収容され、これは収縮されて折り畳まれた状態で(図6(a)参照)、その基端部(図1の符号a1参照)がリテーナ12とアウタケース13との間に介在され、ベース11側の不図示のボルト孔に取付ボルト15でねじ込み固定される。
このエアバッグ袋体8は、開口部6cの前方側に対向するように車両の斜め前方に向かってベース11に取り付けられている。
【0016】
図1、図5(a)〜(c)に示すように、エアバッグ袋体8は乗員側布部8aと車室内壁側布部8bとを重合して図5(b)に示すように縫製され、その袋体8の展開時に車体の車幅方向Yよりも前後方向Xに比較的大きく展開し、平断面視では扁平袋体状を成す。エアバッグ袋体8はその作成時に、乗員側布部8aと車室内壁側布部8bとを重合し、その重合部800の周縁が連続して縫製されて周縁縫製部eが形成される。その上で、図5(c)に示すように、周縁縫製部eの内側であって、インフレータ7の前側位置に上下に延びる縫製部である縦縫製部19が形成され、更に、インフレータ7より前方に向けて延出する縫製部である横縫製部17が形成される。
【0017】
この横縫製部17の上側で縦縫製部19の前側に上側室16が形成され、横縫製部17の下側に下側室15が形成され、横縫製部17の先端側に噴出ガスを下側室15から上側室16へ導く連通部18が形成される。
ここでは、横縫製部17及び縦縫製部19の位置を調整することで上側室や下側室の容量を調整して、着座する乗員を確実に保護するようにしている。
【0018】
図1に示すように、エアバッグ袋体8の内部はその後側である基端部a1がベース11に取り付けられ、その基端部a1となる部位の内部にインフレータ7の下端側のガス発生部701が対向配備され、そのガス発生部701の直上位置よりエアバッグ袋体8の前端部a2に向けて袋体内を下側室15と上側室16とに仕切る横縫製部17がインフレータ7の取付け部801より延出幅bで突出し形成される。横縫製部17の先端部にはガス発生部701から噴出するガスを下側室15から上側室16へ導く連通部18が形成される。
図2に示すように、下側室15はエアバッグ袋体8の展開時にシート着座の乗員の腰部ppに対向するように形成され、上側室16は乗員の肩部pnに対向するよう形成される。
【0019】
ガス発生部701から噴出するガスはその噴出方向を下側室15内壁に向けて直接噴射される。即ち、下側室15は図7(a)に示すように噴出ガスが早期に充満してガス圧Pに応じた乗員保持力を発するに足りる状態に達した上で、連通部18の働きで、下側室15より上側室16へのガス流動量が急増するようその開口幅hを設定することとなる。
上側室16と基端部a1のインフレータ7の取付け部801とを仕切る縦縫製部19は前端部a2との幅aを増減調整することで、上側室16の容量、即ちエアバッグ袋体8の容量を増減調整できる。例えば、幅aを大きくすることでエアバッグ袋体8の容量を大きく調整し、ガス圧を下げ、幅aを小さくすることでエアバッグ袋体8の容量を小さくし、エアバッグ袋体8のガス圧を上げることができる。
【0020】
このように、縦縫製部19はその前端部a2との幅a、或いは、基端部a1との間隔を増減調整することでエアバッグ袋体8の展開時の外形を代えることなく容量を増減して、ガス圧を大小調整することが可能となる。この点より、インフレータ7の出力変更をすることなく、縦縫製部19の前端部a2との幅a、或いは、基端部a1との間隔を増減調整して、上側室16及び下側室15に加えるガス圧Pの増減調整、車幅方向の各膨出幅t2、t1等を調整でき、図7(a)に示すように、エアバッグ袋体が展開する際の上側室16及び下側室15に加える各ガス圧pu,pdを上下に大小調整し、或いは図7(b)に示すように、上側室16及び下側室15に加える各ガス圧pu,pdのピークである展開するタイミングを前後に容易に調整することができる。しかも、縦縫製部19よりインフレータ7の取付け部801側を縫い潰すことでも実質的なエアバッグの容量を減少させることができ、この場合、図7(c)に示すように、上側室16及び下側室15に加える各ガス圧pu,pdのピークである展開タイミングをより効果的に前後に十分に調整することができる。
【0021】
更に、説明を加えると、前後方向Xに延びる横縫製部17を追加することで、インフレータ17から噴出するガスの流れを案内することができる。また、横縫製部17の長さを前後方向Xに調整することにより、
(イ)インフレータ17からの噴出ガスが下側室15と上側室16とに流入するタイミングを任意に設定することができる。
(ロ)インフレータ17からの噴出ガスが下側室15→上側室16の順に案内されるので、下側室15の展開ガス圧を上昇させ、上側室16の展開ガス圧を減少させることができる。
【0022】
この結果、インフレータの種類を変更することなく、また、エアバッグ袋体8の外形を変更することなく、エアバッグの展開タイミング、展開圧力を調整することができ、試験が簡単に行なえる。以上から明らかなように、エアバッグ袋体8にJ字形状の縫製部を設けて縦縫製部19のa寸法、横縫製部17のb寸法を調整することにより、エアバッグ袋体8の展開タイミング、展開時間を、種々、調整できる。また、このJ字形状の縫製は、エアバッグ袋体8を成す2枚の乗員側布部8aと車室内壁側布部8bとを相互に重ね合わせてミシンで縫い合わせるだけの簡易な方法で縫製することができる。
【0023】
このようなエアバッグ袋体8は、図6(a)〜(d)に示すように、折り畳まれて凹陥部10内に格納されている。すなわち、エアバッグ袋体8は、図6(a)に示すように、折り畳み状態(下部)で、場合により、巻き込んだ状態(上部)でアウタケース13内に収納されている。
ここでエアバッグ袋体8はインフレータ7のガス発生部701より下側室15がガスを受けると、(b)に示すように、前端部a2が前方に突出し、(c)に示すように下折りたたみ線f1で折り返されていたエアバッグ袋体8の下部を下方に向け膨出させ、その膨出量を急増させる。次いで、下側室15の膨出が十分に進んだ段階で下側室15のガスが上側室16に連通部18を通過して流動し、上折りたたみ線f2で折り返されていたエアバッグ袋体8の上部を上方に向け膨出させ、(d)に示すように、エアバッグ袋体8の上側室16及び下側室15の膨出はインフレータ7のガス噴射停止まで継続する。
【0024】
なお、エアバッグ袋体8はその組み立て時には(d)に示す状態より、上折りたたみ線f2、下折りたたみ線f1で順次折り返され、更に、(b)に示す状態で最後に、(a)に示すように、蛇腹状にコンパクトに折り畳まれ、アウタケース13内に収納されることとなる。
次に、前述のように構成されたエアバッグ装置の車両の側突時における作動を説明する。車両がその側方から衝突力を受けると、図示しないセンサが衝突力を感知し、同センサがインフレータ7に作動指令を出力する。これに伴ってインフレータ7のガス発生部701からガスがエアバッグ袋体7の下側室15に瞬時に送り込まれ、図4(a)に示すように、下側室15が膨張する。
【0025】
この時、噴出するガスが下側室15内壁に向けて噴射することに加え、横縫製部17の容量規制機能により、早期に充満して膨出を完了し、下側室15のガス圧Pで乗員の腰部ppを保持でき、その上で、連通部18を通過して、下側室15より上側室16へのガス流動量が急増し、図4(b)に示すように、上側室16も膨出する。
【0026】
その上でインフレータ7の噴出ガスによりエアバッグ袋体8の内圧(図7(a)の符号g1)が更に上昇し、下側室15が車幅方向の膨出幅t1で膨出し、そのガス圧(図7(a)の符号g2)で乗員の腰部ppを保持し、上側室16が車幅方向の膨出幅t2で膨出し、そのガス圧で乗員の肩部pn側を保持する。このため、車体側部構成部材であるドア等が車室内に侵入してきたとしても、その時点で乗員の体とドア等の内壁との間に適性ガス圧のエアバッグ袋体8が介装されていることより、乗員の体がドア等の内壁に直接当接するという2次衝突を容易に免れることができ、安全性が向上する。
【0027】
ここでは特に、エアバッグ袋体8の下側室15の膨出幅t1が比較的大きく設定され、しかも、横縫製部17の容量規制機能と連通部18の絞り機能により下側室15を比較的早期に充満させて下側室15のガス圧を確保する。これにより、エアバッグ袋体8を乗員の体形に合わせた形状に早期に膨出でき、乗員の体に向けてドア等の内壁が接近してきた際に、エアバッグ袋体8がずれなく安定して乗員の体を覆い、2次衝突を容易に免れるようにでき、安全性が向上する。
【0028】
このようなエアバッグ袋体が各車両に適するか否かの確認試験を行なう場合、被試験体として複数のエアバッグ袋体が供される。これら被試験体としての複数のエアバッグ袋体は、図5(a)〜(c)に示すように、乗員側布部8aと車室内壁側布部8bとが周縁縫製部eで縫製され、その上で、重合部800上の縦縫製部19が前端部a2と基端部a1との間隔aを大小異ならせて供給され、重合部800上の横縫製部17がインフレータ7のガス発生部701より前方に向けて延出する間隔bを大小異ならせて供給され、連通部18がその間隔hを大小異ならせて供給される。
【0029】
このように縦縫製部19、横縫製部17、連通部18の形状を適宜調整した被試験体として複数のエアバッグ袋体は順次所定容量のインフレータ7と組合されて確認試験が行なわれ、これにより、所定容量のインフレータ7と最適な組合せの上側室16や下側室15及び連通部18を有するエアバッグ袋体が選択され、車載用として使用されることとなる。
この場合、縦縫製部19を調整することでエアバッグ袋体の容量を調整してエアバッグ袋体のガス圧を調整できる。
【0030】
更に、横縫製部17及び縦縫製部19を調整することで上側室16や下側室15の容量を調整して着座する乗員を確実に保護することができる。
更に、連通部18の形状を変形調整して下側室15から上側室16へ導くガスの流動量を容易に調整できる。
【0031】
なお、周縁縫製部eの形状によってもエアバッグ袋体の容量を調整できる。
このように、インフレータ17のガス噴出容量(インフレータの種類)、エアバッグ袋体8の外形形状などを変更することなく、横縫製部17、縦縫製部19及び連通部18を適宜調整することで、上側室16や下側室15の容量を調整して車種に応じて最適なエアバッグ装置を得るための確認試験を効率良く行なうことができる。
【0032】
上述のところにおいて、エアバッグ袋体8は下側室15と上側室16の2室に区分されていたが、これに限定されるものではなく、図8に示すように、エアバッグ袋体8aがその上側室16を更に上上室16uと下上室16dに第3の横縫製部21と第2連通部22とで仕切るように構成しても良く、この場合、下上室16dより上上室16uの膨出を遅らせて乗員の頭部の2次衝突を干渉するように構成しても良く、この場合も、第3の横縫製部21の縫製位置を容易に上下に調整することで下上室16d及び上上室16uの容量を容易に調整でき、車幅方向の膨出量を調整でき、図1のエアバッグ袋体8と同様の効果が得られる。
【0033】
上述のところにおいて、エアバッグ装置は助手席用シートに装着されていたが、これに限定されるものでなく、運転席や他の客席用のシートにも適用でき、同様の作用効果が得られる。また、アウタケース13は,必ずしも設ける必要はなく、アウタケース13に代えて、エアバック袋体を収納状態に保持して、エアバック袋体の展開時に破断するラッピングシート等を設ける構成にしてもよい。
【0034】
【発明の効果】
以上のように、本発明は、エアバッグ袋体の重合部に横縫製部の上側で縦縫製部の前側に上側室を、横縫製部の下側に下側室を、横縫製部の先端側に連通部を形成したので、これら縦縫製部を調整することでエアバッグ袋体の容量を調整してエアバッグ袋体のガス圧を調整でき、横縫製部及び縦縫製部を調整することで上側室や下側室の容量を調整して着座する乗員を確実に保護することができ、連通部の形状を変形調整して下側室から上側室へ導くガスの流動量を容易に調整できるので、車種に応じて最適なエアバッグ装置を得るための確認試験を効率良く行なえる。
【0035】
請求項2の発明は、エアバッグ袋体の下側室が座席に着座する乗員の腰部と対向するので、下側室の膨張タイミングを早めるように連通部の形状を設定することで、早期に乗員の腰部に下側室を当接させ、乗員の体形に合わせた形状にエアバッグ袋体を早期に膨出でき、乗員の体に向けてドア等の内壁が接近してきた際に、エアバッグ袋体がずれなく安定して乗員の体を覆い、2次衝突を容易に免れるようにでき、安全性が向上する。
【図面の簡単な説明】
【図1】本発明の一実施形態としてのエアバッグ装置を装備したシートの全体構成図である。
【図2】図1のエアバッグ装置を装備した車両の助手席回りの概略構成図である。
【図3】図1のエアバッグ装置を装備した助手席側シートを示し、(a)は概略斜視図、(b)は(a)中のZ−Z線断面図である。
【図4】図1のエアバッグ装置を装備した車両の側突時の挙動を説明する図であり、(a)は側突開始時の概略後面図、(b)は側突経過時の概略後面図である。
【図5】図1のエアバッグ装置で用いるエアバッグ袋体の作成工程の説明図で、(a)は縫製前の状態、(b)は周縁部の縫製状態、(c)は重合部の縫製状態を示す。
【図6】図1のエアバッグ装置で用いるエアバッグ袋体の折り畳み状態と展開状態との間を段階的に説明する図で、(a)は折り畳み状態、(b)は上下端の折り畳み状態、(c)は上端のみの折り畳み状態、(d)は展開状態を示す。
【図7】図1のエアバッグ装置で用いるエアバッグ袋体を用いての確認試験を行なった際に得られるエアバッグ袋体の展開時ガス圧及び展開タイミング特性線図で、(a)は上下調整時の特性、(b)は前後調整時の特性を(c)は縫い潰しによる容量低減時における前後調整時の特性を示す。
【図8】図1のエアバッグ袋体に代えて採用できる3分割側室を有するエアバッグ袋体の側面図である。
【図9】従来のエアバッグ装置を示し、(a)は後面図、(b)は要部平断面図である。
【図10】図9のエアバッグ袋体の展開時ガス圧及び展開タイミング特性線図を示す。
【符号の説明】
1 シートクッション
2 シートバッグ
7 インフレータ
701 ガス噴出部
8 エアバッグ袋体
8a 乗員側布部
8b 車室内壁側布部
800 重合部
9 エアバッグモジュール
15 下側室
16 上側室
17 横縫製部
18 連通部
19 縦縫製部
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an airbag device that expands an airbag body between an occupant sitting on a seat and a vehicle interior wall to absorb collision energy when a vehicle receives a collision force from the side thereof. .
[0002]
[Prior art]
2. Description of the Related Art In order to protect an occupant in the event of a side collision of a vehicle, an airbag device (side airbag device) in which a seat is provided with an airbag bag or an inflator for inflating the airbag bag with gas is known. I have.
Such an airbag device swells in a narrow space between the side of the seated occupant and the inner wall surface of the door or the inner surface of the door glass to prevent the occupant from contacting the inner wall surface of the door or the inner surface of the door glass. It has become.
FIGS. 9A and 9B show a conventional side airbag device including a seat cushion portion 110 and a seatbag portion 120. FIG.
[0003]
In the figure, an airbag module 170 including an inflator 150 and an airbag body 160 is housed inside a side support section 130 on the door side of the seatbag section 120.
When the inflator 150 is actuated due to a side collision of the vehicle, gas is sent into the airbag body 160, which breaks the side support portion 130 and swells to the outside, and expands as shown in FIG. 9 (b). .
[0004]
Here, when gas is ejected from the inflator 150 into the airbag bag body 160, the deployment time and the deployed gas pressures pa and pb in the regions a and b are relatively increased in the region a as shown in FIG. Is generally low.
Such a side airbag device is disclosed, for example, in Japanese Patent Application Laid-Open No. H10-152011 (Patent Document 1). In this case, in particular, the upper chamber of the airbag body is located at a position facing the occupant's head. The seat belt is configured so as to be able to prevent the upper chamber from interfering with the seat belt when the seat belt is expanded.
[0005]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 10-152011
[Problems to be solved by the invention]
By the way, the gap between the seated occupant 100 and the inner wall surface of the vehicle, for example, the gap A between the waist side portion of the seated occupant 100 and the door inner wall surface, and the gap B between the shoulder side portion of the seated occupant 100 and the door glass inner surface, The size and design of the vehicle, the design of the door trim, the layout and design of the seats, and the like are variously different depending on the vehicle type.
In addition, the behavior of the vehicle at the time of a side collision, such as how fast the inner wall surface of the vehicle enters the occupant at the time of the side collision, also differs depending on the vehicle type. That is, the behavior at the time of side collision of the inner wall surface of the vehicle depends on the size (class) of the vehicle and the type of the vehicle, particularly, a vehicle having a low floor or roof such as a sedan or a high floor or roof such as an RV vehicle. It varies greatly depending on the vehicle, and is also affected by the design of the vehicle (such as the inclination of the door glass), the design of the door trim (the shape of the armrests and the undercut), the layout of the seat (front and rear positions) and the design.
[0007]
As described above, the gap between the inner wall surface and the seat is greatly different for each vehicle, and the behavior at the time of side collision of the inner wall surface of the vehicle is also greatly different.
The side airbag device mounted on such a vehicle cannot accurately obtain the shock absorbing function of the bag if the timing of deployment of the airbag is shifted, and if the deployment pressure of the airbag is low, the If the body does not swell sufficiently, it will not be possible to absorb shocks properly.
As described above, the side airbag device mounted on a vehicle has an optimal airbag bag according to the type of vehicle because the timing of deployment of the airbag and the appropriate state of the pressure to deploy greatly differ for each type of vehicle. It is necessary to set the inflator accordingly.
[0008]
Therefore, in order to obtain an optimum side airbag device according to a vehicle type, a plurality of airbag bags of various sizes and shapes are prototyped, and inflators of various gas pressures combined with them are prototyped. In addition, in order to confirm the optimum deployment timing and deployment pressure of various side airbag devices, it is the fact that confirmation tests are sequentially performed.
In this case, the timing at which the airbag body of the side airbag device is deployed and the pressure at which it is deployed show a pattern as shown in FIG. 10, and these characteristic lines are adjusted up, down, left, and right to optimize each of the vehicle types. In order to set it, it is necessary to prototype a plurality of airbag bags of various sizes and shapes, and to prototype an inflator of various gas pressures to be combined with the airbag bag and perform a deployment test, which is enormous cost and time. There is a problem that needs to be solved.
[0009]
The present invention has been made on the basis of the above-described problems, and an object of the present invention is to provide an airbag device that can efficiently perform a confirmation test for obtaining an optimal airbag device according to a vehicle type.
[0010]
[Means for Solving the Problems]
The invention according to claim 1 incorporates an airbag module including at least an inflator and an airbag body into a seatbag portion of a seat, and provides the airbag module with a space between an occupant and a vehicle interior wall during a side collision of the vehicle. In the airbag device in which the airbag bag inflated by the jet gas is provided, the airbag bag is sewn by superimposing an occupant side fabric portion and a vehicle interior wall side fabric portion. A vertically sewn portion extending vertically at the front position of the inflator is formed in the overlapping portion of the cloth portion, and a horizontal sewn portion extending forward from the inflator is formed. The vertical sewn portion is formed above the horizontal sewn portion. An upper chamber is formed on the front side of the sewn section, a lower chamber is formed below the side sewn section, and a communicating section that guides the ejected gas from the lower chamber to the upper chamber is formed on a tip side of the side sewn section. Characterized by .
As described above, the upper chamber is formed in the overlapping portion of the airbag bag body above the horizontal sewing portion, in front of the vertical sewing portion, the lower chamber is formed below the horizontal sewing portion, and the communication portion is formed in the tip side of the horizontal sewing portion. Therefore, by adjusting these vertical sewing sections, the volume of the airbag bag body can be adjusted to adjust the gas pressure of the airbag bag body, and by adjusting the horizontal sewing section and the vertical sewing section, the upper chamber and the lower chamber can be adjusted. The capacity can be adjusted to protect the seated occupant without fail, and the shape of the communicating part can be deformed and adjusted to easily adjust the amount of gas flowing from the lower chamber to the upper chamber. A confirmation test for obtaining an airbag device can be efficiently performed.
[0011]
According to a second aspect of the present invention, in the airbag device of the first aspect, the lower chamber of the airbag body is formed so as to face the waist of an occupant sitting on a seat.
As described above, since the lower chamber of the airbag body faces the waist of the occupant sitting on the seat, the shape of the communication portion is set so that the timing of inflation of the lower chamber is set earlier. The airbag bag can be inflated into a shape that matches the occupant's body shape by bringing the side chambers into contact, and when the inner wall such as a door approaches the occupant's body, the airbag bag is stably The body can be covered and a secondary collision can be easily avoided, and safety is improved.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 4 show an airbag device as an embodiment of the present invention.
The airbag device is mounted in a passenger compartment R of a vehicle (not shown), mounted on a passenger seat S composed of a seat cushion portion 1 and a seatbag portion 2, and provided with a door D and a seat S forming a vehicle interior wall. Is formed so as to be able to be deployed in the gap.
The seat bag portion 2 mainly includes a seat frame 3, a spring member 4 fixed to the seat frame 3, a cushion pad member 5 supported by these members, and a first skin member 6 covering these members. Have been.
[0013]
In FIG. 3B, an airbag module 9 including an inflator 7 and an airbag body 8 is provided inside the side support portion sp on the door D side, which is the outside of the seatbag portion 2, on the rear side of the cushion pad material 5. It is arranged and stored.
A portion where the airbag bag body 8 protrudes from the airbag module 9 is covered with the cushion pad material 5, and the front skin 6 a and the side skin 6 b of the skin member 6 covering the surface of the seatbag portion 2 are formed at the corners. It is closed by a sewing portion 6c to be sewn. The rear end of the side surface skin 6b is bent and extended, and is stretched between the rear sides of the left and right side support portions sp as the rear surface skin 6d.
[0014]
As shown in FIG. 1, a substantially middle portion in the vertical direction of the side support portion sp of the seat bag portion 2, more specifically, a position indicated by a cross-sectional arrow Z-Z in FIG. When the cushion member 1 is seated on the cushion portion 1, the cushion member 5 located at the torso height of the occupant is provided with a concave portion 10 inside.
The airbag module 9 is built in the recess 10. The airbag module 9 has a base 11 made of sheet metal fixed to a vertically extending frame component 3a on the side of the seat frame 3 in a vertical direction. It is bolted to 3a.
[0015]
The base 11 is provided with a retainer 12 for gripping and fixing the inflator 7 as an expansion means for generating nitrogen gas or the like, and an outer case 13 so as to surround the retainer 12.
The airbag module 9 accommodates an airbag bag body 8, which is in a contracted and folded state (see FIG. 6A), and whose base end (see reference numeral a1 in FIG. It is interposed between the outer case 13 and screwed into a bolt hole (not shown) on the base 11 side with a mounting bolt 15 to be fixed.
The airbag body 8 is attached to the base 11 obliquely forward of the vehicle so as to face the front side of the opening 6c.
[0016]
As shown in FIGS. 1 and 5 (a) to 5 (c), the airbag 8 is formed by superimposing the occupant-side cloth portion 8a and the vehicle interior wall-side cloth portion 8b as shown in FIG. 5 (b). When the bag body 8 is deployed, the bag body 8 is relatively widened in the front-rear direction X than in the vehicle width direction Y of the vehicle body, and has a flat bag shape in a plan sectional view. When the airbag body 8 is manufactured, the occupant side fabric portion 8a and the vehicle interior wall side fabric portion 8b are superimposed, and the perimeter of the superposed portion 800 is continuously sewn to form a peripheral sewn portion e. Then, as shown in FIG. 5 (c), a vertical sewing portion 19 which is a sewing portion extending vertically is formed inside the peripheral sewing portion e and at a position on the front side of the inflator 7, and further formed by the inflator 7. A horizontal sewing portion 17 which is a sewing portion extending forward is formed.
[0017]
An upper chamber 16 is formed above the horizontal sewing section 17 and in front of the vertical sewing section 19, and a lower chamber 15 is formed below the horizontal sewing section 17. A communication portion 18 that leads from 15 to the upper chamber 16 is formed.
Here, the capacities of the upper chamber and the lower chamber are adjusted by adjusting the positions of the horizontal sewing section 17 and the vertical sewing section 19, so that the seated occupant is reliably protected.
[0018]
As shown in FIG. 1, the inside of the airbag bag body 8 has a rear end portion a1 attached to the base 11 and a gas generating portion on the lower end side of the inflator 7 inside the base end portion a1. 701 are opposed to each other, and a horizontal sewing portion 17 for partitioning the bag body into a lower chamber 15 and an upper chamber 16 from a position immediately above the gas generating section 701 toward the front end a2 of the airbag bag body 8 is provided with a mounting section for the inflator 7. 801 is formed to protrude with an extension width b. A communication portion 18 that guides the gas ejected from the gas generation portion 701 from the lower chamber 15 to the upper chamber 16 is formed at the tip of the horizontal sewing portion 17.
As shown in FIG. 2, the lower chamber 15 is formed so as to face the waist pp of the occupant seated when the airbag body 8 is deployed, and the upper chamber 16 is formed so as to face the shoulder pn of the occupant. .
[0019]
The gas ejected from the gas generator 701 is ejected directly toward the inner wall of the lower chamber 15 in the ejection direction. That is, as shown in FIG. 7A, the lower chamber 15 reaches a state in which the ejected gas is quickly filled to generate an occupant holding force corresponding to the gas pressure P, and then the communication portion 18 operates. The opening width h is set so that the gas flow from the lower chamber 15 to the upper chamber 16 increases rapidly.
The vertical sewing portion 19 that separates the upper chamber 16 from the mounting portion 801 of the inflator 7 at the base end a1 adjusts the width a of the front end a2 to increase or decrease the capacity a of the upper chamber 16, that is, the airbag bag 8. Capacity can be increased or decreased. For example, by increasing the width a, the capacity of the airbag 8 is increased, the gas pressure is reduced, and by decreasing the width a, the capacity of the airbag 8 is reduced. Gas pressure can be increased.
[0020]
As described above, the vertical sewing portion 19 increases or decreases the capacity without changing the outer shape of the airbag bag body 8 by changing the width a with the front end portion a2 or the interval with the base end portion a1. Thus, it is possible to adjust the gas pressure. From this point, without changing the output of the inflator 7, the width a of the vertical sewing portion 19 with respect to the front end portion a2 or the interval between the vertical sewing portion 19 and the base end portion a1 is increased or decreased to adjust the upper chamber 16 and the lower chamber 15. It is possible to adjust the increase and decrease of the gas pressure P to be applied and to adjust the respective bulging widths t2 and t1 in the vehicle width direction. As shown in FIG. The gas pressures pu and pd applied to the upper and lower chambers are adjusted up and down, or as shown in FIG. Can be easily adjusted. In addition, it is also possible to reduce the substantial capacity of the airbag by sewing the attachment portion 801 side of the inflator 7 from the vertical sewing portion 19, and in this case, as shown in FIG. The deployment timing, which is the peak of each gas pressure pu, pd applied to the lower chamber 15, can be adjusted more effectively back and forth.
[0021]
In addition, the flow of the gas ejected from the inflator 17 can be guided by adding the horizontal sewing portion 17 extending in the front-rear direction X. Also, by adjusting the length of the side sewing portion 17 in the front-rear direction X,
(A) The timing at which the gas ejected from the inflator 17 flows into the lower chamber 15 and the upper chamber 16 can be arbitrarily set.
(B) Since the gas ejected from the inflator 17 is guided in the order of the lower chamber 15 → the upper chamber 16, the developing gas pressure of the lower chamber 15 can be increased, and the developing gas pressure of the upper chamber 16 can be reduced.
[0022]
As a result, the deployment timing and the deployment pressure of the airbag can be adjusted without changing the type of the inflator and without changing the outer shape of the airbag bag 8, and the test can be easily performed. As is apparent from the above description, the J-shaped sewn portion is provided in the airbag 8 and the dimension a of the vertical sewn portion 19 and the dimension b of the horizontal sewn portion 17 are adjusted, so that the airbag 8 is deployed. The timing and the deployment time can be variously adjusted. The J-shaped sewing is performed by a simple method in which the two occupant side fabric portions 8a and the vehicle interior wall side fabric portion 8b forming the airbag bag body 8 are overlapped with each other and sewn with a sewing machine. can do.
[0023]
As shown in FIGS. 6A to 6D, such an airbag 8 is folded and stored in the recess 10. That is, as shown in FIG. 6A, the airbag bag body 8 is housed in the outer case 13 in a folded state (lower part) and, in some cases, in a wrapped state (upper part).
Here, when the lower chamber 15 receives gas from the gas generator 701 of the inflator 7, the airbag bag body 8 protrudes forward at the front end a2 as shown in (b) and folds down as shown in (c). The lower part of the airbag bag body 8 folded back at the line f1 is swelled downward, and the swelling amount is rapidly increased. Next, when the expansion of the lower chamber 15 has sufficiently proceeded, the gas in the lower chamber 15 flows through the communication section 18 to the upper chamber 16, and the gas in the airbag bag body 8 folded back at the upper folding line f <b> 2. The upper portion is bulged upward, and the bulging of the upper chamber 16 and the lower chamber 15 of the airbag 8 continues until the inflator 7 stops gas injection, as shown in FIG.
[0024]
At the time of assembling, the airbag bag body 8 is sequentially folded back at the upper fold line f2 and the lower fold line f1 from the state shown in (d), and finally in the state shown in (b), as shown in (a). Thus, it is folded compactly in a bellows shape and stored in the outer case 13.
Next, the operation of the airbag device configured as described above during a side collision of the vehicle will be described. When the vehicle receives a collision force from its side, a sensor (not shown) detects the collision force, and the sensor outputs an operation command to the inflator 7. Along with this, gas is instantaneously sent from the gas generator 701 of the inflator 7 into the lower chamber 15 of the airbag bag 7, and the lower chamber 15 expands as shown in FIG.
[0025]
At this time, in addition to injecting the gas to be ejected toward the inner wall of the lower chamber 15, the capacity is regulated by the transverse sewing portion 17, and the gas is quickly filled to complete the inflation. 4b, the gas flow rate from the lower chamber 15 to the upper chamber 16 increases rapidly through the communication portion 18, and the upper chamber 16 also expands as shown in FIG. Put out.
[0026]
Then, the internal pressure of the airbag body 8 (symbol g1 in FIG. 7A) further rises due to the gas ejected from the inflator 7, and the lower chamber 15 inflates with an inflated width t1 in the vehicle width direction. The occupant's waist pp is held at (g2 in FIG. 7A), the upper chamber 16 swells at the swelling width t2 in the vehicle width direction, and the gas pressure is used to hold the occupant's shoulder pn side. For this reason, even if a door or the like, which is a vehicle body side component, enters the vehicle interior, an airbag bag body 8 of an appropriate gas pressure is interposed between the occupant's body and the inner wall of the door or the like at that time. As a result, a secondary collision in which the occupant's body directly abuts an inner wall such as a door can be easily avoided, and safety is improved.
[0027]
Here, in particular, the bulging width t1 of the lower chamber 15 of the airbag bag body 8 is set relatively large, and the lower chamber 15 is moved relatively early by the capacity regulating function of the transverse sewing portion 17 and the throttle function of the communication portion 18. To ensure the gas pressure in the lower chamber 15. As a result, the airbag bag 8 can be quickly inflated into a shape conforming to the occupant's body shape, and when the inner wall such as a door approaches the occupant's body, the airbag bag 8 is stabilized without displacement. The vehicle can cover the occupant's body to avoid a secondary collision easily, thereby improving safety.
[0028]
When performing a confirmation test as to whether such an airbag bag is suitable for each vehicle, a plurality of airbag bags are provided as a test object. As shown in FIGS. 5 (a) to 5 (c), the plurality of airbag bags as the test objects are obtained by sewing the occupant side fabric portion 8a and the vehicle interior wall side fabric portion 8b at the peripheral sewn portion e. Then, the vertical sewing portion 19 on the overlapping portion 800 is supplied with the distance a between the front end portion a2 and the base end portion a1 being different in size, and the horizontal sewing portion 17 on the overlapping portion 800 generates gas from the inflator 7. The interval b extending forward from the portion 701 is supplied with a difference in size, and the communication portion 18 is supplied with a difference in the interval h.
[0029]
As described above, a plurality of airbag bags as test objects in which the shapes of the vertical sewing portion 19, the horizontal sewing portion 17, and the communication portion 18 are appropriately adjusted are sequentially combined with the inflator 7 having a predetermined capacity, and a confirmation test is performed. Thereby, an airbag body having the upper chamber 16, the lower chamber 15, and the communication portion 18 in an optimal combination with the inflator 7 having a predetermined capacity is selected and used for vehicle mounting.
In this case, the gas pressure of the airbag bag can be adjusted by adjusting the vertical sewing portion 19 to adjust the capacity of the airbag bag.
[0030]
Further, by adjusting the horizontal sewing portion 17 and the vertical sewing portion 19, the capacities of the upper chamber 16 and the lower chamber 15 can be adjusted to reliably protect a seated occupant.
Further, the shape of the communicating portion 18 is deformed and adjusted, so that the flow amount of the gas guided from the lower chamber 15 to the upper chamber 16 can be easily adjusted.
[0031]
The capacity of the airbag body can also be adjusted depending on the shape of the peripheral sewing portion e.
In this manner, the horizontal sewing portion 17, the vertical sewing portion 19, and the communication portion 18 are appropriately adjusted without changing the gas ejection capacity (the type of the inflator) of the inflator 17 and the outer shape of the airbag bag 8. In addition, the capacity of the upper chamber 16 and the lower chamber 15 can be adjusted to efficiently perform a confirmation test for obtaining an optimal airbag device according to the type of vehicle.
[0032]
In the above description, the airbag bag 8 is divided into two chambers, the lower chamber 15 and the upper chamber 16, but the invention is not limited to this. As shown in FIG. The upper chamber 16 may be further partitioned into an upper upper chamber 16u and a lower upper chamber 16d by a third horizontal sewing portion 21 and a second communication portion 22, and in this case, the upper chamber 16d is located above the lower upper chamber 16d. The bulging of the chamber 16u may be delayed to interfere with the secondary collision of the occupant's head. In this case also, the sewing position of the third transverse sewing portion 21 is easily adjusted up and down. The capacities of the lower upper chamber 16d and the upper upper chamber 16u can be easily adjusted, and the amount of swelling in the vehicle width direction can be adjusted, and the same effect as the airbag body 8 in FIG. 1 can be obtained.
[0033]
In the above description, the airbag device is mounted on the passenger seat. However, the airbag device is not limited to this. The airbag device can be applied to a driver seat or other passenger seats, and the same operation and effect can be obtained. . The outer case 13 does not necessarily need to be provided. Instead of the outer case 13, the air bag is held in a housed state, and a wrapping sheet or the like that breaks when the air bag is deployed is provided. Good.
[0034]
【The invention's effect】
As described above, according to the present invention, the upper chamber is provided on the overlapped portion of the airbag body, above the horizontal sewing portion, in front of the vertical sewing portion, the lower chamber is provided below the horizontal sewing portion, and the tip side of the horizontal sewing portion. By adjusting these vertical sewing portions, the volume of the airbag bag can be adjusted to adjust the gas pressure of the airbag bag, and the horizontal sewing portion and the vertical sewing portion can be adjusted. The capacity of the upper and lower chambers can be adjusted to reliably protect the occupant seated, and the shape of the communicating part can be deformed and adjusted to easily adjust the flow rate of gas flowing from the lower chamber to the upper chamber. A confirmation test for obtaining an optimal airbag device according to a vehicle model can be efficiently performed.
[0035]
According to the second aspect of the present invention, since the lower chamber of the airbag body faces the waist of the occupant sitting on the seat, the shape of the communication portion is set so as to accelerate the inflation timing of the lower chamber, so that the occupant can be quickly occupied. The lower chamber is brought into contact with the lumbar region, and the airbag bag can be swelled quickly in a shape that matches the occupant's body shape, and when the inner wall such as a door approaches the occupant's body, the airbag bag is released. The occupant's body can be stably covered without slippage, and secondary collision can be easily avoided, thereby improving safety.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a seat equipped with an airbag device as one embodiment of the present invention.
FIG. 2 is a schematic configuration diagram around a passenger seat of a vehicle equipped with the airbag device of FIG. 1;
FIGS. 3A and 3B show a passenger side seat equipped with the airbag device of FIG. 1, wherein FIG. 3A is a schematic perspective view, and FIG. 3B is a sectional view taken along line ZZ in FIG.
4A and 4B are diagrams illustrating the behavior of a vehicle equipped with the airbag device of FIG. 1 at the time of a side collision, where FIG. 4A is a schematic rear view of the vehicle at the start of a side collision, and FIG. It is a rear view.
5A and 5B are explanatory views of a process of producing an airbag body used in the airbag apparatus of FIG. 1, wherein FIG. 5A shows a state before sewing, FIG. 5B shows a state of sewing a peripheral portion, and FIG. This shows a sewing state.
6A and 6B are diagrams for explaining stepwise between a folded state and an unfolded state of the airbag body used in the airbag apparatus of FIG. 1, wherein FIG. 6A is a folded state, and FIG. , (C) shows a folded state of only the upper end, and (d) shows an expanded state.
7A and 7B are characteristic diagrams of gas pressure and deployment timing of an airbag bag obtained when a confirmation test is performed using the airbag bag used in the airbag device of FIG. (B) shows the characteristics at the time of front-rear adjustment, and (c) shows the characteristics at the time of front-rear adjustment at the time of capacity reduction due to sew-out.
FIG. 8 is a side view of an airbag body having three divided side chambers that can be employed in place of the airbag body of FIG. 1;
9A and 9B show a conventional airbag device, in which FIG. 9A is a rear view, and FIG.
FIG. 10 is a characteristic diagram of gas pressure and deployment timing at the time of deployment of the airbag bag body of FIG. 9;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seat cushion 2 Seat bag 7 Inflator 701 Gas ejection part 8 Airbag bag body 8a Occupant side cloth part 8b Car interior wall side cloth part 800 Overlapping part 9 Airbag module 15 Lower chamber 16 Upper chamber 17 Side sewing part 18 Communication part 19 Vertical sewing section

Claims (2)

少なくともインフレータとエアバッグ袋体とからなるエアバッグモジュールを座席のシートバッグ部に内蔵し、車両の側面衝突時に、乗員と車室内壁との間の空間に上記インフレータからの噴出ガスで膨出する上記エアバッグ袋体を配備するようにしたエアバッグ装置において、
上記エアバッグ袋体が乗員側布部と車室内壁側布部とを重合して縫製され、同両布部の重合部には上記インフレータの前側位置に上下に延びる縦縫製部が形成されると共に上記インフレータより前方に向けて延出する横縫製部が形成され、
上記横縫製部の上側で上記縦縫製部の前側に上側室が形成され、上記横縫製部の下側に下側室が形成され、上記横縫製部の先端側に上記噴出ガスを下側室から上側室へ導く連通部を形成したことを特徴とするエアバッグ装置。
An airbag module including at least an inflator and an airbag body is incorporated in a seatbag portion of a seat, and swells with gas ejected from the inflator into a space between an occupant and a vehicle interior wall upon a side collision of a vehicle. In the airbag device in which the airbag body is arranged,
The airbag body is sewn by overlapping an occupant-side fabric portion and a vehicle interior wall-side fabric portion, and a vertically sewn portion extending vertically is formed at the overlapped portion of the two fabric portions at a front position of the inflator. A horizontal sewing portion extending forward from the inflator is formed,
An upper chamber is formed above the horizontal sewing section and in front of the vertical sewing section, a lower chamber is formed below the horizontal sewing section, and the ejected gas is supplied from the lower chamber to the tip side of the horizontal sewing section. An airbag device, wherein a communication portion leading to a side chamber is formed.
請求項1記載のエアバッグ装置装置において、
上記エアバッグ袋体の下側室が座席に着座する乗員の腰部と対向するように形成されたことを特徴とするエアバッグ装置。
The airbag device according to claim 1,
An airbag device wherein the lower chamber of the airbag body is formed to face the waist of an occupant sitting on a seat.
JP2002362528A 2002-12-13 2002-12-13 Air bag device Withdrawn JP2004189183A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006049093A1 (en) * 2004-11-04 2006-05-11 Autoliv Development Ab Side air bag device for vehicle

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006049093A1 (en) * 2004-11-04 2006-05-11 Autoliv Development Ab Side air bag device for vehicle
EP1832475A1 (en) * 2004-11-04 2007-09-12 Autoliv Development AB Side air bag device for vehicle
JPWO2006049093A1 (en) * 2004-11-04 2008-05-29 オートリブ ディベロップメント エービー Side airbag device for vehicle
EP1832475A4 (en) * 2004-11-04 2009-03-25 Autoliv Dev Side air bag device for vehicle
US8056923B2 (en) 2004-11-04 2011-11-15 Autoliv Development Ab Side airbag apparatus for a vehicle
JP4846595B2 (en) * 2004-11-04 2011-12-28 オートリブ ディベロップメント エービー Side airbag device for vehicle
US8226114B2 (en) 2004-11-04 2012-07-24 Autoliv Development Ab Side airbag apparatus for a vehicle
US8328227B2 (en) 2004-11-04 2012-12-11 Autoliv Development Ab Side airbag apparatus for a vehicle

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