JP3922015B2

JP3922015B2 - Head protection airbag device

Info

Publication number: JP3922015B2
Application number: JP2001386707A
Authority: JP
Inventors: 哲也尾方
Original assignee: Toyoda Gosei Co Ltd
Current assignee: Toyoda Gosei Co Ltd
Priority date: 2001-12-19
Filing date: 2001-12-19
Publication date: 2007-05-30
Anticipated expiration: 2021-12-19
Also published as: JP2003182503A

Description

【０００１】
【発明の属する技術分野】
本発明は、車両のサイドウインド周縁の上縁側に折り畳まれて収納され、膨張用ガスの流入時、サイドウインドを覆うように、下方へ展開膨張するエアバッグ、を備えた頭部保護エアバッグ装置に関する。
【０００２】
【従来の技術とその課題】
従来の頭部保護エアバッグ装置では、特開２０００−５２９０９等に記載されているように、サイドウインド周縁の上縁側に折り畳まれて収納されたエアバッグが、膨張用ガスを流入させて、車内側のサイドウインドを覆うように膨張していた。
【０００３】
そして、展開膨張完了時のエアバッグが、車外側への押圧力を受けても車外側に移動し難いように、車両前後方向に沿うテンションを発生可能に、前後方向の一方の端部側をサイドウインドの上縁側から下方に延びるピラー部に連結させ、他方の端部側に、前後方向に延びるテンションベルト等の可撓性を有した牽引材を連結させて、その牽引材の先端を、長く延ばして、サイドウインドの上縁側の車体側に取り付けていた。
【０００４】
そのため、サイドウインドの上縁側に収納するエアバッグの前後方向の収納スペースが、牽引材の長さ分、車両の前後方向に長く必要となっていた。
【０００５】
本発明は、上述の課題を解決するものであり、展開膨張完了時のエアバッグの車外側への移動を規制可能として、エアバッグの前後方向の収納スペースをコンパクトにすることができる頭部保護エアバッグ装置を提供することを目的とする。
【０００６】
【課題を解決するための手段】
本発明に係る頭部保護エアバッグ装置は、車両のサイドウインド周縁の上縁側に折り畳まれて収納され、膨張用ガスの流入時、下方へ展開膨張するエアバッグを備えるとともに、
該エアバッグが、車両の前後方向の前端側を、略上下方向に配設されるフロントピラー部としての先側ピラー部に取り付け、かつ、該先側ピラー部から離れる後端側に、膨張用ガスを流入させて略平板状に膨張して前記サイドウインドの車内側を覆い可能な板状膨張部を備え、
該板状膨張部が、展開膨張完了時に前記先側ピラー部から離れた車両の後端側のリヤピラー部としての端側ピラー部の車内側を覆い可能な後方側部位、を備えて構成され、
前記サイドウインドの後方側で該サイドウインドと略直交方向に配置された後壁部を備えた車両に搭載される頭部保護エアバッグ装置であって、
前記エアバッグが、上縁側に、車両のボディ側に固定させる複数の取付部を備え、
最後端の端側取付部が、前記端側ピラー部の上方から車内側に屈曲されて、前記後壁部の車体側に取り付けられ、
該端側取付部の前方側で隣接する隣接取付部が、前記端側ピラー部の上方側における前記後壁部近傍の車体側に取り付けられ、
前記エアバッグの前記後方側部位の少なくとも下部側の一部が、前記エアバッグの展開膨張完了時に、前記端側ピラー部と前記後壁部との交差部位を跨ぐように、前記端側ピラー部の車内側部から車内側に湾曲して、配設されることを特徴とする。
【０００７】
【０００８】
【０００９】
さらに、前記エアバッグの展開膨張完了時の前記板状膨張部は、前記端側ピラー部の車内側を覆うとともに、少なくとも、前記端側ピラー部から該端側ピラー部と車両前後方向で隣接する隣接ピラー部までの車内側を覆い可能に、構成してもよい。
【００１０】
そして、上記の場合、前記エアバッグの板状膨張部は、内部に膨張用ガスを流入させて、前記端側ピラー部と前記隣接ピラー部との車内側を連結するように、車両の前後方向に沿って略棒状に延びる下横セルを、下縁側に、設けて構成してもよい。
【００１１】
また、上記の場合、前記エアバッグの板状膨張部は、内部に膨張用ガスを流入させて、前記端側ピラー部と前記隣接ピラー部との車内側を連結するように、車両の前後方向に沿って略棒状に延びる上横セルを、上縁側に、設けて構成してもよい。
【００１２】
さらに、前記板状膨張部が、膨張用ガスを流入させて上下方向に略棒状に膨らんで前後方向に沿って配設される複数の縦セルを備えて構成される場合には、
前記エアバッグには、
後端側を、前記端側ピラー部の上方における前記サイドウインドの上縁側に連結固定させ、前端側を、前記板状膨張部の縦セル間の下部側の車外側に連結させて、前記板状膨張部の車外側に重なるように配設され、前記先側ピラー部に連結された部位と協働して、展開膨張完了時の前記エアバッグに車両前後方向に沿ったテンションを発生可能な可撓性を有した牽引材、
を設けて構成することが望ましい。
【００１３】
【００１４】
【発明の効果】
本発明に係る頭部保護エアバッグ装置では、エアバッグが膨張用ガスを流入させて展開膨張を完了させれば、板状膨張部における先側ピラー部から離れた後方側部位の少なくとも下部側の一部が、車内側に湾曲するように、配設される。すなわち、端側取付部が、予め、車内側に屈曲して車体側に取り付けられていることから、エアバッグの展開膨張完了時、確実に、板状膨張部の後方側部位付近、すなわち、端側取付部の下方付近を、車内側に湾曲させることができる。そのため、後方側部位の湾曲した部位の湾曲状態を平らに延ばすような下縁側部位の車外側への変形に対して、後方側部位の少なくとも下部側の一部の湾曲した部位は、湾曲状態を維持するような形状保持性が付与される。一方、板状膨張部の湾曲した部位から離れたエアバッグにおける車両の前後方向の端部は、略上下方向に配設された先側ピラー部に取り付けられているため、後方側部位の下縁側部位の形状保持性と協働して、エアバッグの下縁側部位が、車外側に移動し難くなり、エアバッグに車外側への押圧力が作用しても、エアバッグ全体の車外側への移動が規制可能となる。
【００１５】
そして、板状膨張部における先側ピラー部から離れた端部側に、先側ピラー部から離れるように長く延びるテンションベルト・テンションクロス等の牽引材を設けなくとも、展開膨張を完了させたエアバッグは、車外側に移動し難くなることから、サイドウインド周縁の上縁側に折り畳んで収納したエアバッグの車両前後方向の収納スペースは、牽引材が不要となる分、コンパクトにすることができる。
【００１６】
したがって、本発明に係る頭部保護エアバッグ装置では、展開膨張完了時のエアバッグの車外側への移動を規制可能として、エアバッグの前後方向の収納スペースをコンパクトにすることができる。
さらに、エアバッグの板状膨張部における車内側に湾曲した端部側の後方側部位が、車両の後端側のリヤピラー部とする端側ピラー部の車内側を覆う構成であれば、エアバッグの前後方向における一方の前端側が先側ピラー部に取り付けられた状態で、板状膨張部の後端側が、端側ピラー部により支持されることから、エアバッグの前後方向に沿う全体の車外側への移動規制が、可能となる。
【００１７】
また、本発明に係る頭部保護エアバッグ装置では、エアバッグが覆うサイドウインドの後方側に、サイドウインドと略直交した後壁部が配設されるシングルキャブ車・ダブルキャブ車等のピックアップ車両等に搭載させるように、エアバッグに、牽引材を、長く、あるいは、全く配設させることなく、板状膨張部を後壁部に接近させて配設させても、展開膨張時のエアバッグは、車外側への移動を規制可能となるため、ピックアップ車両のサイドウインドを的確に覆うことができる。
【００１８】
【００１９】
【００２０】
【００２１】
そして、請求項２のように、エアバッグの展開膨張完了時の板状膨張部が、端側ピラー部の車内側を覆うとともに、少なくとも、端側ピラー部から端側ピラー部と車両前後方向で隣接する隣接ピラー部までの車内側を覆い可能に、構成されていれば、板状膨張部が、端側ピラー部と隣接ピラー部とに支持されて、一層、端側ピラー部と隣接ピラー部との間の部位の車外側への移動を規制できる。
【００２２】
上記の場合、請求項３のように構成されておれば、エアバッグの展開膨張完了時、板状膨張部の下縁側に配設される下横セルが、車両の前後方向に沿って略棒状に延びるように、配設されていることから、板状膨張部の下縁側に、車両の前後方向に沿った剛性を付与することができ、さらにまた、下横セル自体が、端側・隣接ピラー部に支持されることから、展開膨張完了時のエアバッグにおける端側・隣接ピラー部間の部位の車外側への移動を、一層、抑制できる。
【００２３】
また、請求項４のように構成する場合も、エアバッグの展開膨張完了時、板状膨張部の上縁側に配設される上横セルが、車両の前後方向に沿って略棒状に延びるように、配設されていることから、板状膨張部に、車両の前後方向に沿った剛性を付与することができ、さらに、上横セル自体が、端側・隣接ピラー部に支持されることから、展開膨張完了時のエアバッグにおける端側・隣接ピラー部間の部位の車外側への移動を、一層、抑制可能となる。
【００２４】
この場合、特に、板状膨張部が、下縁側に下横セルを備えていれば、上下の横セルと端側・隣接ピラー部の支持とによって、板状膨張部の端側・隣接ピラー部間の部位が、板状の剛性を高めることとなって、車外側への押圧力を受けても、一層、車外側への移動を防止できる。
【００２５】
さらに、請求項５のように構成する場合には、展開膨張完了時のエアバッグが、先側ピラー部に取り付けられた部位から、牽引材の配設部位まで、車両前後方向のテンションを生じさせることができることから、エアバッグ全体の車外側への移動抑制が、可能となる。勿論、この牽引材は、板状膨張部の車外側に重なるように配設されていることから、エアバッグの車両前後方向の収納スペースを増加させることを、極力、抑えることができ、さらに、牽引材自体により、板状膨張部の車外側の支持も可能となる。
【００２６】
【００２７】
【発明の実施の形態】
以下、本発明の一実施形態を図面に基づいて説明する。
【００２８】
図１に示す実施形態の頭部保護エアバッグ装置Ｍは、ダブルキャブ車Ｖに搭載されるものであり、エアバッグ１２、インフレーター３９、及び、エアバッグカバー１１、を備えて構成されている。
【００２９】
なお、ダブルキャブ車Ｖは、乗員が着座する前席・後席シートの側方に配置されて車両側面ＶＳに位置するサイドウインドＳＷ１・ＳＷ２を備えるとともに、サイドウインドＳＷ２の後方側でサイドウインドＳＷ２と略直交するように配置される後壁部７を備えて、構成されている。また、このダブルキャブ車Ｖは、サイドウインドＳＷ１の前方側でルーフサイドレール部ＲＲから斜め下方に延びて、略上下方向に配設されるフロントピラー部ＦＰ、サイドウインドＳＷ１・ＳＷ２間でルーフサイドレール部ＲＲから下方に延びるセンターピラー部ＣＰ、及び、サイドウインドＳＷ２と後壁部７との間でルーフサイドレール部ＲＲから下方に延びるリヤピラー部ＲＰ、を備えて構成されている。さらに、サイドウインドＳＷ１は、前席の側方に配置されて、実施形態の場合には、フロントドアのサイドウインドとしており、サイドウインドＳＷ２は、後席の側方に配置されて、実施形態の場合には、リヤドアのサイドウインドとしている。
【００３０】
各ピラー部ＦＰ・ＣＰ・ＲＰには、それぞれ、車体（ボディ１）側の板金製のインナパネル１ａを覆うように、合成樹脂製のガーニッシュ３・５・６が配設されている。また、ルーフサイドレール部ＲＲにおいても、車内側では、インナパネル１ａを覆うように、合成樹脂製のルーフヘッドライニング４が配設されている。
【００３１】
なお、実施形態の場合、フロントピラー部ＦＰが、先側ピラー部ＦＰとなり、また、リヤピラー部ＲＰが、膨張時のエアバッグ１２の後述する後板状膨張部１６に覆われる端側ピラー部Ｐ１となり、センターピラー部ＣＰが、端側ピラー部Ｐ１の車両前後方向に沿った前方側で、端側ピラー部Ｐ１と隣接する隣接ピラー部Ｐ２としている（図１・４参照）。さらに、センターピラー部ＣＰとリヤピラー部ＲＰとは、先側ピラー部ＦＰに対して、共に、別の（第２）のピラー部となる。
【００３２】
また、後壁部７は、図１に示すように、上部に、リヤウインドＲＷを配設させて、車体（ボディ１）側の板金製のインナパネル１ｂと、インナパネル１ｂの車内側を覆う合成樹脂製のリヤトリム８と、を備えて構成されている。なお、後壁部７の上端側は、天井側から延びるルーフヘッドライニング４に覆われている。
【００３３】
そして、エアバッグカバー１１は、実施形態の場合、フロントピラーガーニッシュ３とルーフヘッドライニング４との下縁３ａ・４ａから構成されている。エアバッグカバー１１は、折り畳まれて収納されたエアバッグ１２の車内側を覆うように配設されるとともに、展開膨張時のエアバッグ１２を車内側へ突出可能とするために、エアバッグ１２に押されて車内側に開くように、構成されている。
【００３４】
エアバッグ１２は、センターピラー部ＣＰやリヤピラー部ＲＰを跨いで、サイドウインドＳＷ１・ＳＷ２やリヤウインドＲＷの車内側の上縁側に、折り畳まれて収納されて、エアバッグカバー１１に覆われている。エアバッグ１２は、展開膨張時、図１〜５に示すように、サイドウインドＳＷ１・ＳＷ２とセンターピラー部ＣＰ・リヤピラー部ＲＰとの車内側を覆い可能な略長方形の板状としている。なお、実施形態の場合、エアバッグ１２の後端側は、図１に示すように、後壁部７の上部側に侵入し、ルーフヘッドライニング４に覆われて、収納されている。
【００３５】
そして、エアバッグ１２は、図２・３に示すように、本体部１３と、本体部１３の後部側における車外側Ｏに結合された第１牽引材としての第１テンションクロス３２と、本体部１３の前部側に結合された第２牽引材としての第２テンションクロス３３と、の三部材から構成されている。本体部１３は、ポリアミド糸やポリエステル糸等を利用した袋織りによって、形成されている。第１・第２テンションクロス３２・３３は、ポリアミド糸やポリエステル糸等の可撓性を有した織布から形成されている。
【００３６】
そして、本体部１３は、インフレーター３９からの膨張用ガスＧを流入させて車内側壁部１４ａと車外側壁部１４ｂとを離すように膨張するガス流入部１４と、膨張用ガスＧを流入させない非流入部２４と、を備えて構成されている。
【００３７】
ガス流入部１４は、膨張用ガスＧの流入時に略長方形板状に膨張する前板状・後板状膨張部１５・１６と、インフレーター３９からの膨張用ガスＧをガス流入部１４内に流入させる流入口部２３と、を備えて構成されている。前板状膨張部１５は、膨張用ガスＧを流入させてサイドウインドＳＷ１の車内側を覆い、後板状膨張部１６は、膨張用ガスＧを流入させて、サイドウインドＳＷ２とセンターピラー部ＣＰ・リヤピラー部ＲＰとの車内側を覆うように、それぞれ、展開膨張する。
【００３８】
前板状・後板状膨張部１５・１６は、それぞれ、膨張用ガスＧを流入させて略棒状に膨らむ複数のセル１７を配設させて構成されている。さらに、これらのセル１７は、膨張時、上下方向に略棒状に膨らむ縦セル１８と、車両Ｖの前後方向に沿って略棒状に膨らむ横セル１９と、から構成されている。
【００３９】
そして、前板状膨張部１５は、前方側から順に配置される三つの縦セル１８Ａ・１８Ｂ・１８Ｃと、膨張部１５の上縁側に配設されて、各縦セル１８Ａ・１８Ｂ・１８Ｃの上端と連通される一つの前横セル１９Ａと、を備えて構成されている。また、後板状膨張部１６は、前方側から順に配置される四つの縦セル１８Ｄ・１８Ｅ・１８Ｆ・１８Ｇと、膨張部１６の下縁側に配設されて、縦セル１８Ｄ・１８Ｇの下端と連通される下横セル１９Ｂと、膨張部１６の上縁側に配設されて、各縦セル１８Ｄ・１８Ｅ・１８Ｆ・１８Ｇの上端と連通される上横セル１９Ｃと、を備えて構成されている。
【００４０】
なお、実施形態の場合、前横セル１９Ａと上横セル１９Ｃとは、車両Ｖの前後方向に沿って、直線状に連なっており、流入口部２３から流入する膨張用ガスＧを各縦セル１８の上端側に供給するための膨張用ガスＧの供給路部２２を、構成することとなる。
【００４１】
そして、実施形態の場合には、供給路部２２の前後方向の中間部位（前横セル１９Ａと上横セル１９Ｃとの境界部位）には、上方へ円筒状に突出して、インフレーター３９と接続させる流入口部２３が、配設されている。
【００４２】
また、実施形態の場合には、エアバッグ１２の展開膨張完了時、後板状膨張部１６の縦セル１８Ｄが、隣接ピラー部Ｐ２としてのセンターピラー部ＣＰの車内側を覆い、かつ、縦セル１８Ｇが、端側ピラー部Ｐ１としてのリヤピラー部ＲＰの車内側を覆うように構成されている。さらに、エアバッグ１２の展開膨張完了時、下横セル１９Ｂと上横セル１９Ｃとの前端２０ａ・２１ａが、共に、隣接ピラー部Ｐ２の車内側の上下に配置され、下横セル１９Ｂと上横セル１９Ｃとの後端２０ｂ・２１ｂが、共に、端側ピラー部Ｐ１の車内側の上下に配置されることとなる。
【００４３】
非流入部２４は、ガス流入部１４を囲むように、ガス流入部１４の周縁に配置される周縁部２５と、区画部２７と、取付部２８と、板状部３０と、を備えて構成されている。さらに、非流入部２４は、エアバッグ１２の下縁１２ｂ側における周縁部２５や区画部２７から上方に延びて、各縦セル１８を車両前後方向で区画する複数の厚さ規制部２６を、備えている。
【００４４】
取付部２８（２８Ａ・２８Ｂ・２８Ｃ・２８Ｄ・２８Ｅ・２８Ｆ）は、図２に示すように、エアバッグ１２の上縁１２ａ側から上方に延びるように、複数（実施形態では、六個）配設されている。各取付部２８には、取付ボルト３７（図１・５参照）を挿通させる取付孔２８ａが設けられている。各取付部２８は、当て板３６（図１・５参照）が取り付けられ、ボルト３７を使用して、ボディ１側のインナパネル１ａ・１ｂに固定されている。
【００４５】
なお、エアバッグ１２の前端側の取付部２８Ａは、第２テンションクロス３３の前端に配設されており、先側ピラー部としてのフロントピラー部ＦＰの下部側のインナパネル１ａに、固定されることとなり、他の取付部２８Ｂ・２８Ｃ・２８Ｄ・２８Ｅは、サイドウインドＳＷ１・ＳＷ２周縁の上縁側におけるルーフサイドレール部ＲＲのインナパネル１ａに固定されている。そして、最後端の端側取付部２８Ｆは、エアバッグ１２を平らに展開させた状態で、縦セル１８Ｇの上方より、後方側に配置されている。この端側取付部２８Ｆは、後壁部７における端側ピラー部Ｐ１近傍のリヤウインドＲＷの上縁側に配置され、ボルト３７を使用して、後壁部７のインナパネル１ｂに取付固定されている。
【００４６】
また、実施形態の場合、端側取付部２８Ｆの前方側で隣接する隣接取付部２８Ｅは、最後端の縦セル１８Ｇの前方側で隣接する縦セル１８Ｆの上方位置に、配置されて、車両Ｖへの搭載時、端側ピラー部Ｐ１としてのリヤピラー部ＲＰの上方における後壁部７近傍のインナパネル１ａに、取付固定されることとなる。
【００４７】
そのため、エアバッグ１２の収納時、サイドウインドＳＷ２からずれて後壁部７側に配置される部位は、実施形態の場合、後板状膨張部１６の後端側１６ａであって、その隣接取付部２８Ｅの後方側部位１６ａが、端側取付部２８Ｆとともに、車内側Ｉに屈曲して、配設されることとなる。
【００４８】
そして、実施形態の場合、展開膨張を完了させれば、第１テンションクロス３２の後述する前縁３２ｃより後方側の各縦セル１８Ｅ・１８Ｆ・１８Ｇが、前後方向の幅寸法を減少させる。そのため、最後端の縦セル１８Ｇは、エアバッグ１２の折り畳まれて収納された状態では、後壁部７側のルーフヘッドライニング４に覆われて収納されているものの、エアバッグ１２の展開膨張完了時、縦セル１８Ｅ・１８Ｆの幅寸法の減少によって車両前方側に引っ張られるとともに、後述する第３テンションクロス３４の車両後方側に引っ張るテンションによって、端側ピラー部Ｐ１の車内側Ｉを覆い、かつ、上・下横セル１９Ｃ・１９Ｂの後端２０ｂ・２１ｂ側とともに、端側ピラー部Ｐ１の車内側Ｉから後壁部７との交差部位Ｃを跨ぐように、車内側Ｉに湾曲することとなる（図５参照）。
【００４９】
また、板状部３０は、エアバッグ１２の全体形状を確保するとともに、ガス流入部１４の容積を少なくして、展開膨張完了までの時間を短縮させるために、配設されている。板状部３０は、略長方形の板状として、後板状膨張部１６における縦セル１８Ｄ・１８Ｅ間で、かつ、上・下横セル１９Ｃ・１９Ｂの間に、配設されている。
【００５０】
区画部２７は、板状部３０の後縁下端から後方に延びるように配設されて、各縦セル１８Ｅ・１８Ｆと下横セル１９Ｂとを区画するように、配設されている。
【００５１】
厚さ規制部２６は、図２・３に示すように、各縦セル１８Ａ・１８Ｂ・１８Ｃ・１８Ｄを区画するように、エアバッグ下縁１２ｂ側の周縁部２５から上方へ延びる厚さ規制部２６Ａ・２６Ｂ・２６Ｃと、各縦セル１８Ｅ・１８Ｆ・１８Ｇを区画するように、区画部２７から上方へ延びる厚さ規制部２６Ｄ・２６Ｅと、を具備して構成されている。
【００５２】
そして、第２テンションクロス３３は、周縁部２５の前端側に縫合されて、本体部１３の前端側から前方に延びる三角板形状としている。また、第２テンションクロス３３は、先端に取付部２８Ａを配設させ、取付部２８Ａをフロントピラー部ＦＰの下部側におけるボディ１側のインナパネル１ａに、取付固定させている。
【００５３】
第１テンションクロス３２は、後板状膨張部１６における板状部３０の後縁側から端側ピラー部Ｐ１側に延びて、その端側ピラー部Ｐ１側の上下方向の寸法を狭めるような三角板形状としている。そして、第１テンションクロス３２は、後板状膨張部１６の車外側Ｏに重なるように配設されて、端側ピラー部Ｐ１側の後端部３２ａを、サイドウインドＳＷ２周縁の上縁側（詳しく述べれば、リヤピラー部ＲＰの上方におけるルーフサイドレール部ＲＲのボディ１側のインナパネル１ａ）に固定させ、フロントピラー部ＦＰ側へ延びる前端側を、板状部３０における後端側の車外側Ｏに連結させている。後端部３２ａには、ボルト３７を挿通させる取付孔３２ｂが形成されている。そして、実施形態の場合、後端部３２ａは、当て板３６と取付ボルト３７とを共用して、取付部２８Ｅと共締めされて、インナパネル１ａに固定されることとなる。
【００５４】
また、第１テンションクロス３２の前端側は、クロス３２における三角形状の辺を構成する前縁３２ｃとして、その前縁３２ｃの下端３２ｄが、板状部３０の下部側に連結されるように、前縁３２ｃが板状部３０の車外側Ｏに縫着されている。
【００５５】
なお、後端部３２ａの取付孔３２ｂは、本体部１３とともに、平らに展開させた際、図２に示すように、取付部２８Ｅの取付孔２８ａの下方に配置されるように設定されており、本体部１３の膨張完了時に、第２テンションクロス３３と協働して、第１テンションクロス３２の下縁３２ｅが大きく引っ張られて、本体部１３には、前端側の取付部２８Ａからテンションクロス前縁３２ｃの下端３２ｄにかけて、前後方向に沿った大きなテンションが、発生することとなる。
【００５６】
また、エアバッグ１２の周縁部２５における端側取付部２８Ｆの下方の三角状部位も、車両前後方向の長さ寸法を短くしているものの、下端側を縦セル１８Ｇの下端側に連結させており、エアバッグ１２の展開膨張完了時に車両Ｖの前後方向に沿うテンションを生じさせる第３テンションクロス３４を構成することとなる。すなわち、エアバッグ１２の展開膨張完了時、各縦セル１８Ｅ・１８Ｆ・１８Ｇが、膨張して、車両前後方向の幅寸法を縮めて、後端側の縦セル１８Ｇが前方移動し、第３テンションクロス３４も、車両前後方向のテンションを発生させることとなる。
【００５７】
インフレーター３９は、図１に示すように、略円柱形状の本体部３９ａと、本体部３９ａからの膨張用ガスを下方へ導く供給パイプ３９ｂと、を備えて構成され、供給パイプ３９ｂの下端に、エアバッグ１２の流入口部２３の上端を外装させ、クランプ（図符号省略）を利用して、エアバッグ１２と連結されている。そして、インフレーター３９は、ブラケット４０を利用して、センターピラー部ＣＰの上方におけるルーフサイドレール部ＲＲのインナパネル１ａに、ルーフヘッドライニング４の下縁４ａに覆われて、取付固定されている。
【００５８】
実施形態の頭部保護エアバッグ装置Ｍの車両Ｖへの搭載について説明すると、まず、エアバッグ１２を平らに展開させて、エアバッグ１２の下縁１２ｂ側を上縁１２ａ側に接近させるように、前後方向に沿った多数の折目を付けて、蛇腹折りする。そして、適宜、破断可能な折り崩れ防止用の図示しないテープ材でくるんでおく。
【００５９】
その後、各取付部２８に、当て板３６を取り付ける。また、クランプを利用しつつ、流入口部２３にインフレーター３９を連結し、ついで、その周囲に、取付ブラケット４０を取り付け、インフレーター３９をエアバッグ１２に組み付けて、エアバッグ組立体を形成しておく。なお、取付部２８Ｅと第１テンションクロス３２の後端部３２ａとは、当て板３６を共用することとなる。
【００６０】
その後、各取付部２８を、取付ボルト３７を使用して、インナパネル１ａ・１ｂに取付固定するとともに、取付ブラケット４０を、ボルトを使用して、インナパネル１ａに取付固定すれば、エアバッグ組立体を車両Ｖのボディ１に取り付けることができる。なお、端側取付部２８Ｆは、リヤピラー部ＲＰの上方側から車内側Ｉに屈曲させて、後壁部７におけるリヤウインドＲＷの上縁側のインナパネル１ｂに取付固定することとなる。
【００６１】
そして、インフレーター３９から延びる図示しないリード線を、所定のエアバッグ作動回路に接続させるとともに、フロントピラー部ＦＰでは、インナパネル１ａにフロントピラーガーニッシュ３を取付固定し、ルーフサイドレール部ＲＲでは、サイドウインドＳＷ１・ＳＷ２やリヤウインドＲＷの上縁側のインナパネル１ａ・１ｂにルーフヘッドライニング４を取付固定し、さらに、隣接ピラー部Ｐ２としてのセンターピラー部ＣＰや端側ピラー部Ｐ１としてのリヤピラー部ＲＰのガーニッシュ５・６をボディ１のインナパネル１ａに固定し、さらに、後壁部７のインナパネル１ｂにリヤトリム８を固定すれば、頭部保護エアバッグ装置Ｍを車両Ｖに搭載することができる。
【００６２】
その後、インフレーター３９が作動されれば、膨張用ガスＧが、流入口部２３からガス流入部１４の供給路部２２内に流入して、図示しないテープ材を破断させ、さらに、各縦セル１８や横セル１９Ｂが展開膨張して、エアバッグ１２は、エアバッグカバー１１としてのピラーガーニッシュ３やルーフヘッドライニング４の下縁３ａ・４ａを車内側に押して開かせ、図１の二点鎖線や図４の実線で示すように、サイドウインドＳＷ１・ＳＷ２やリヤウインドＲＷの上縁側から下方へ突出し、エアバッグ１２が、サイドウインドＳＷ１・ＳＷ２やセンターピラー部ＣＰ・リヤピラー部ＲＰの車内側を覆うこととなる。
【００６３】
この時、エアバッグ１２が膨張用ガスＧを流入させて展開膨張を完了させれば、後板状膨張部１６は、端側ピラー部Ｐ１側の後端側となる後方側部位１６ａが、車内側Ｉに屈曲されて、車両Ｖに搭載されており、膨張を完了させた状態でも、図４・５の実線や図３の二点鎖線に示すように、後方側部位１６ａにおける少なくとも下部側の一部１６ｂが、車内側Ｉに湾曲して配設されることとなる。すなわち、縦セル１８Ｇや横セル１９Ｂ・１９Ｃの後端２０ｂ・２１ｂ側が、エアバッグ１２の膨張完了時、縦セル１８Ｅ・１８Ｆの幅寸法の減少によって車両前方側に引っ張られるとともに、第３テンションクロス３４の車両後方側に引っ張るテンションによって、端側ピラー部Ｐ１の車内側Ｉを覆い、端側ピラー部Ｐ１の車内側Ｉの車内側部から後壁部７との交差部位Ｃを跨ぐように、車内側Ｉに湾曲することとなる。そのため、膨張完了時の後板状膨張部１６は、湾曲した部位の湾曲状態を平らに延ばすような、後板状膨張部１６の下縁側部位１６ｃの車外側Ｏへの変形に対して、湾曲状態を維持するような形状保持性が付与される。一方、後板状膨張部１６の湾曲した部位から離れたエアバッグ１２における車両Ｖの前後方向の前端部２８Ａは、略上下方向に配設された先側ピラー部ＦＰの下部側に取り付けられているため、下縁側部位１６ｃの形状保持性と協働して、エアバッグ１２の下縁１２ｂ側が、車外側Ｏに移動し難くなり、エアバッグ１２に車外側Ｏへの押圧力が作用しても、エアバッグ１２全体の車外側Ｏへの移動が規制可能となる。
【００６４】
そして、後板状膨張部１６における先側ピラー部ＦＰから離れた端部側の後方側部位１６ａに、先側ピラー部ＦＰから離れるように長く延びるテンションベルト・テンションクロス等の牽引材を設けなくとも、展開膨張を完了させたエアバッグ１２は、車外側Ｏに移動し難くなることから、サイドウインドＳＷ１・ＳＷ２周縁の上縁側に折り畳んで収納したエアバッグ１２の車両前後方向の収納スペースは、前後方向に長く延びる牽引材が不要となる分、コンパクトにすることができる。
【００６５】
したがって、実施形態の頭部保護エアバッグ装置Ｍでは、展開膨張完了時のエアバッグ１２の車外側Ｏへの移動を規制可能として、エアバッグ１２の前後方向の収納スペースをコンパクトにすることができる。
【００６６】
また、実施形態では、エアバッグ１２の展開膨張完了時における後板状膨張部１６が、先側ピラー部ＦＰと別のセンターピラー部ＣＰやリヤピラー部ＲＰの車内側Ｉを覆うように配設されて、逆に、ピラー部ＣＰ・ＲＰに支持される構成となることから、一層、車外側Ｏへの押圧力を受けても、車外側Ｏへの移動を規制可能となる。
【００６７】
なお、実施形態では、展開膨張完了時の後板状膨張部１６の後方側部位１６ａが、リヤピラー部ＲＰの車内側Ｉを覆うように配設されているが、車内側Ｉに湾曲する後方側部位１６ａを、リヤピラー部ＲＰの車内側Ｉより前方側に配置させて、後板状膨張部１６の車外側Ｏをセンターピラー部ＣＰだけで、支持させるように構成してもよい。この場合、後板状膨張部１６は、その前後方向の略中間部位で、第２のピラー部としてのセンターピラー部ＣＰを覆う構成となる。
【００６８】
逆に、センターピラー部ＣＰをなくしてもよい。この場合でも、エアバッグ１２の後板状膨張部１６における車内側Ｉに湾曲した端部側の後方側部位１６ａが、車両Ｖの前後方向における端側のピラー部Ｐ１（ＲＰ）の車内側Ｉを覆う構成となり、エアバッグ１２の前後方向における一方の端部２８Ａが先側ピラー部ＦＰに取り付けられた状態で、エアバッグ１２の前後方向における他方の端部側となる後板状膨張部１６の端部側１６ａが、端側ピラー部Ｐ１によって、支持されることから、エアバッグ１２の前後方向に沿った全体の車外側Ｏへの移動規制が、可能となる。
【００６９】
ちなみに、上記構成は、図６に示すようなシングルキャブ車Ｖ１に搭載される頭部保護エアバッグ装置Ｍ１に好適な構成となる。すなわち、このエアバッグ装置Ｍ１では、エアバッグ１２Ａが、前後方向に並設された複数の縦セル１８を備えた板状膨張部１６Ａと、板状膨張部１６Ａの前端に連結された可撓性を有するテンションベルト４４と、を備えて、エアバッグ１２Ａの前端側のベルト前端部４４ａ（取付部２８Ａ）を、略上下方向に配設される先側ピラー部ＦＰに取り付けている。板状膨張部１６Ａは、エアバッグ１２Ａにおける先側ピラー部ＦＰから離れる端部側に配置されて、インフレーター３９Ａからの膨張用ガスを流入させて略平板状に膨張してサイドウインドＳＷの車内側を覆い可能な構成としている。そして、このエアバッグ１２Ａは、上縁側に配置された取付部２８に関して、後端側の端側取付部２８Ｆを、屈曲させて、インフレーター３９Ａに連結させた状態で、インフレーター３９Ａとともに、後壁部７のインナパネル１ｂに取り付けている。そのため、エアバッグ１２Ａは、展開膨張完了時に、板状膨張部１６Ａにおける先側ピラー部ＦＰから離れた端部側の後方側部位１６ａを、車内側Ｉに湾曲させることができるように、配設されている。
【００７０】
この頭部保護エアバッグ装置Ｍ１でも、エアバッグ１２Ａの展開膨張完了時、図６の二点鎖線に示すように、板状膨張部１６Ａの後方側部位１６ａにおける少なくとも下部側の一部１６ｂが、車内側Ｉに湾曲して配設される。そのため、板状膨張部１６Ａは、湾曲した部位の湾曲状態を平らに延ばすような、板状膨張部１６Ａの下縁側部位１６ｃの車外側Ｏへの変形に対して、湾曲状態を維持するような形状保持性が付与される。一方、板状膨張部１６Ａの湾曲した部位から離れたエアバッグ１２Ａにおける車両Ｖ１の前後方向の前端部４４ａは、略上下方向に配設された先側ピラー部ＦＰの下部側に取り付けられているため、下縁側部位１６ｃの形状保持性と協働して、エアバッグ１２Ａの下縁１２ｂ側が、車外側Ｏに移動し難くなり、エアバッグ１２Ａに車外側Ｏへの押圧力が作用しても、エアバッグ１２Ａ全体の車外側Ｏへの移動が規制可能となる。その結果、エアバッグ１２Ａが覆うサイドウインドＳＷの後方側に、サイドウインドＳＷと略直交した後壁部７が配設されるシングルキャブ車Ｖ１に搭載させるように、エアバッグ１２Ａに、牽引材を、長く、あるいは、全く配設させることなく、板状膨張部１２Ａを後壁部７に接近させて配設させても、展開膨張時のエアバッグ１２Ａは、車外側Ｏへの移動を規制可能となるため、実施形態と同様に、ピックアップ車両Ｖ１のサイドウインドＳＷを的確に覆うことができる。
【００７１】
そしてさらに、この頭部保護エアバッグ装置Ｍ１では、エアバッグ１２Ａの板状膨張部１６Ａにおける車内側Ｉに湾曲した端部側の後方側部位１６ａが、車両Ｖ１の前後方向における端側のピラー部Ｐ１（ＲＰ）の車内側Ｉを覆う構成としている。そのため、エアバッグ１２Ａの前後方向における一方の端部２８Ａが先側ピラー部ＦＰに取り付けられた状態で、エアバッグ１２Ａの前後方向における他方の端部側となる板状膨張部１６Ａの端部側１６ａが、端側ピラー部Ｐ１によって、支持されることから、エアバッグ１２Ａの前後方向に沿った全体の車外側Ｏへの移動規制が、可能となる。
【００７２】
また、実施形態の頭部保護エアバッグ装置Ｍでは、エアバッグ１２が膨張用ガスＧを流入させて展開膨張を完了させれば、後板状膨張部１６は、図４・５に示すように、相互に連通した各セル１８Ｄ・１８Ｅ・１８Ｆ・１８Ｇ・１９Ｂ・１９Ｃにより板状に膨張した状態で、端側ピラー部Ｐ１から端側ピラー部Ｐ１と車両前後方向で隣接する隣接ピラー部Ｐ２までの車内側Ｉを、覆うことから、逆に、端側・隣接ピラー部Ｐ１・Ｐ２によって、車外側Ｏの面を支持されることとなる。
【００７３】
すなわち、展開膨張を完了させたエアバッグ１２は、端側・隣接ピラー部Ｐ１・Ｐ２間において、板状に膨張した後板状膨張部１６が、下縁側部位１６ｂの車外側Ｏへの変形に対する形状保持性を高めた状態で、端側・隣接ピラー部Ｐ１・Ｐ２により、車外側Ｏを支持される態様となることから、剛性を向上させることとなって、車外側Ｏへの押圧力を受けても、一層、車外側Ｏへ移動し難い。
【００７４】
さらに、実施形態では、エアバッグ１２の展開膨張完了時、後板状膨張部１６の下縁側部位１６ｃに配設される下横セル１９Ｂが、車両Ｖの前後方向に沿って略棒状に延びるように、配設されていることから、後板状膨張部１６の下縁側部位１６ｃに、車両Ｖの前後方向に沿った剛性を付与することができ、さらにまた、下横セル１９Ｂ自体が、前後両端２０ａ・２０ｂを端側・隣接ピラー部Ｐ１・Ｐ２に支持されることから、展開膨張完了時のエアバッグ１２における端側・隣接ピラー部Ｐ１・Ｐ２間の部位の車外側Ｏへの移動を、一層、抑制できる。
【００７５】
また、実施形態では、エアバッグ１２の展開膨張完了時、後板状膨張部１６の上縁側１６ｄに配設される上横セル１９Ｃが、車両Ｖの前後方向に沿って略棒状に延びるように、配設されていることから、後板状膨張部１６に、車両Ｖの前後方向に沿った剛性を付与することができ、さらに、上横セル１９Ｃ自体が、前後両端２１ａ・２１ｂを端側・隣接ピラー部Ｐ１・Ｐ２に支持されることから、展開膨張完了時のエアバッグ１２における端側・隣接ピラー部Ｐ１・Ｐ２間の部位の車外側Ｏへの移動を、一層、抑制可能となる。
【００７６】
特に、実施形態では、後板状膨張部１６が、下縁側に下横セル１９Ｂを備えており、上下の横セル１９Ｃ・１９Ｂと端側・隣接ピラー部Ｐ１・Ｐ２の支持とによって、後板状膨張部１６が、板状の剛性を高めることとなって、車外側Ｏへの押圧力を受けても、一層、車外側Ｏへの移動を防止できる。
【００７７】
また、実施形態では、後板状膨張部１６自体の外周縁の位置に、相互に連通する縦セル１８Ｄと下横セル１９Ｂと縦セル１８Ｇとによって、車内側Ｉから見て、略Ｕ字状の膨張部位、若しくは、相互に連通する縦セル１８Ｄ・下横セル１９Ｂ・縦セル１８Ｇ・上横セル１９Ｃによって、車内側Ｉから見て、略四角環状の膨張部位が、配設されることから、一層、板状の剛性が向上しており、車外側Ｏへの押圧力を受けても、一層、車外側Ｏへの移動を防止できる。
【００７８】
さらに、実施形態では、展開膨張完了時のエアバッグ１２が、先側ピラー部ＦＰに取り付けられた部位２８Ａから、第１テンションクロス３２の配設部位まで、車両前後方向のテンションを生じさせることができることから、エアバッグ１２全体の車外側Ｏへの移動抑制が、可能となる。勿論、この第１テンションクロス３２は、後板状膨張部１６の車外側Ｏに重なるように配設されていることから、エアバッグ１２の車両前後方向の収納スペースを増加させることを、極力、抑えることができ、さらに、テンションクロス３２自体で、板状膨張部１６におけるセル１８Ｅ・１８Ｆ・１９Ｃの車外側Ｏの支持も可能となる。
【００７９】
さらにまた、実施形態では、端側取付部２８Ｆが、予め、車内側Ｉに屈曲してボディ１側のインナパネル１ｂに取り付けられていることから、エアバッグ１２の展開膨張完了時、確実に、後板状膨張部１６における端側ピラー部Ｐ１側の端部側部位１６ａの一部１６ｂを、車内側Ｉに湾曲させることができる。
【００８０】
なお、実施形態では、車両Ｖの端側ピラー部Ｐ１を、車両Ｖの後端側のリヤピラー部ＲＰとして、隣接ピラー部Ｐ２を、その端側ピラー部Ｐ１の前方側のセンターピラー部ＣＰとして、リヤピラー部ＲＰからセンターピラー部ＣＰまでの車内側を覆う後板状膨張部１６の後端側１６ａを、車内側Ｉに屈曲させた場合を説明した。しかし、前後方向を逆の構成として、フロントピラー部ＦＰを端側ピラー部Ｐ１とし、センターピラー部ＣＰを隣接ピラー部Ｐ２として、前板状膨張部１６の前端側を車内側Ｉに屈曲させるように、構成してもよい。
【００８１】
また、エアバッグが、板状膨張部の端部側を車内側に屈曲させて、展開膨張を完了できれば、実施形態や上記のように、車両の後端側のピラー部（リヤピラー部）や前端側のピラー部（フロントピラー部）に、板状膨張部の端部側を配設させるだけでなく、図７に示すように、車両の前後方向における中間付近のピラー部Ｐ１付近等に、板状膨張部１６の上縁側の端側取付部２８Ｆを、車内側Ｉに屈曲させて、取り付けてもよい。なお、図例の場合には、端側取付部２８Ｆを、インナパネル１ａに固着させた断面Ｌ字形のブラケット４１に、取付固定し、このブラケット４１を利用して、端側取付部２８Ｆを、ボディ１側のインナパネル１ａに屈曲させて取り付けている。
【００８２】
さらに、エアバッグの展開膨張完了時に、板状膨張部の端部側を車内側に屈曲させる場合には、その端部側の上方における端側取付部２８Ｆを、予め、車内側Ｉに屈曲させて、取り付けておく他、例えば、図８に示すように、展開膨張を完了させた際に、ガス流入部における車内側壁部１４ａより車外側壁部１４ｂを伸び易くして、縦セル１８等の膨張部位における車両前後方向に沿った膜長に関し、車内側壁部１４ａより車外側壁部１４ｂの膜長を長くするように構成して、エアバッグ１２Ｂの展開膨張完了時に、セル１８自体で、板状膨張部１６の端部側を車内側Ｉに屈曲させてもよい。
【００８３】
さらにまた、実施形態のエアバッグ１２では、端部側１６ａを車内側Ｉへ屈曲させた板状膨張部１６が、端側・隣接ピラー部Ｐ１・Ｐ２を含めた端側・隣接ピラー部Ｐ１・Ｐ２間だけを覆うように構成した場合を示したが、本発明のエアバッグの板状膨張部は、端側ピラー部から離れる隣接ピラー部の前方側等を覆うように構成してもよい。
【図面の簡単な説明】
【図１】本発明に係る一実施形態の頭部保護エアバッグ装置の車両搭載状態を示す車内側から見た正面図である。
【図２】実施形態に使用するエアバッグを、平らに展開させた状態を示す正面図である。
【図３】実施形態に使用するエアバッグ単体を膨張させた際の横断面図であり、図２のIII−III部位に対応する。
【図４】実施形態のエアバッグ装置の作動時を示す車内側から見た正面図である。
【図５】実施形態のエアバッグにおける後板状膨張部の後端部側の展開膨張完了時の概略部分平面図である。
【図６】実施形態の変形例における頭部保護エアバッグ装置の車両搭載状態を示す車内側から見た斜視図である。
【図７】実施形態の他の変形例を示す概略部分横断面図である。
【図８】実施形態のさらに他の変形例のエアバッグを示す概略部分横断面図である。
【符号の説明】
１２・１２Ａ・１２Ｂ…エアバッグ、
１６・１６Ａ…板状膨張部、
１６ａ…（端部側部位）後端側部位、
１９Ｂ…下横セル、
１９Ｃ…上横セル、
２８Ｆ…端側取付部、
３２…（牽引材）第１テンションクロス、
ＳＷ・ＳＷ１・ＳＷ２…サイドウインド、
ＦＰ…先側ピラー部（フロントピラー部）、
Ｐ１…端側ピラー部（リヤピラー部）、
Ｐ２…隣接ピラー部（センターピラー部）、
Ｖ…（車両）ダブルキャブ車、
Ｖ１…（車両）シングルキャブ車、
Ｉ…車内側、
Ｏ…車外側、
Ｍ・Ｍ１…頭部保護エアバッグ装置。[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a head protection airbag device including an airbag that is folded and stored on the upper edge side of the periphery of a side window of a vehicle, and that expands and expands downward so as to cover the side window when inflating gas flows. About.
[0002]
[Prior art and its problems]
  In the conventional head protection airbag device, as described in Japanese Patent Laid-Open No. 2000-52909 or the like, an airbag that is folded and stored on the upper edge side of the side window peripheral edge causes an inflating gas to flow into the vehicle. It expanded to cover the inner side window.
[0003]
  Then, one end side in the front-rear direction can be generated so that a tension along the front-rear direction of the vehicle can be generated so that the airbag at the time of deployment and expansion is difficult to move to the outer side even if it receives a pressing force toward the outer side of the vehicle. Connected to the pillar portion extending downward from the upper edge side of the side window, and connecting a flexible traction material such as a tension belt extending in the front-rear direction to the other end side, the tip of the traction material is It extended for a long time and was attached to the vehicle body side on the upper edge side of the side window.
[0004]
  Therefore, the storage space in the front-rear direction of the airbag stored on the upper edge side of the side window is required to be longer in the front-rear direction of the vehicle by the length of the traction material.
[0005]
  SUMMARY OF THE INVENTION The present invention solves the above-described problems, and can protect the airbag from moving to the outside of the vehicle when deployment and inflation are complete, and the head protection can reduce the storage space in the front-rear direction of the airbag. An object is to provide an airbag device.
[0006]
[Means for Solving the Problems]
  The head protection airbag device according to the present invention includes an airbag that is folded and housed on the upper edge side of the side window periphery of the vehicle, and that expands and expands downward when inflating gas flows.
  The airbag is attached to a front pillar portion as a front pillar portion disposed in a substantially vertical direction on the front end side in the front-rear direction of the vehicle, and is inflated on a rear end side away from the front pillar portion. A plate-like inflatable portion capable of covering the inner side of the side window by inflating gas into a substantially flat plate shape;
  The plate-like inflating portion is configured to include a rear side portion capable of covering the inner side of the end pillar portion as a rear pillar portion on the rear end side of the vehicle that is separated from the front side pillar portion when the expansion and expansion is completed,
  A head protection airbag device mounted on a vehicle having a rear wall portion disposed substantially orthogonal to the side window on the rear side of the side window,
  The airbag includes a plurality of attachment portions to be fixed to the vehicle body side on the upper edge side,
  The end side attachment portion of the rearmost end is bent from the upper side of the end side pillar portion to the vehicle inner side, and attached to the vehicle body side of the rear wall portion,
  An adjacent mounting portion adjacent on the front side of the end side mounting portion is mounted on the vehicle body side in the vicinity of the rear wall portion on the upper side of the end side pillar portion,
  When at least a part of the lower side of the rear side portion of the airbag is completely deployed and inflated,in frontThe vehicle interior side of the end-side pillar portion so as to straddle the intersection of the end-side pillar portion and the rear wall portionPartIt is characterized by being curved from the vehicle interior to the vehicle interior side.
[0007]
[0008]
[0009]
  Further, the plate-like inflating portion when the airbag has been inflated and inflated covers the vehicle interior side of the end-side pillar portion and is adjacent to the end-side pillar portion from at least the end-side pillar portion in the vehicle front-rear direction. You may comprise so that the vehicle inner side to an adjacent pillar part can be covered.
[0010]
  In the above case, the plate-like inflating portion of the airbag causes the inflating gas to flow into the interior, and connects the vehicle interior sides of the end-side pillar portion and the adjacent pillar portion, so that the vehicle longitudinal direction A lower horizontal cell extending substantially in the form of a bar along the lower edge may be provided on the lower edge side.
[0011]
  Further, in the above case, the plate-like inflating portion of the airbag causes the inflating gas to flow into the inside thereof, and connects the vehicle interior side of the end side pillar portion and the adjacent pillar portion to the vehicle front-rear direction. An upper horizontal cell extending in a substantially bar shape along the upper edge may be provided on the upper edge side.
[0012]
  Further, in the case where the plate-like inflating portion is configured to include a plurality of vertical cells that are arranged along the front-rear direction by inflating a gas for inflation and inflating in a substantially rod shape in the up-down direction,
  In the airbag,
  The rear end side is connected and fixed to the upper edge side of the side window above the end side pillar portion, and the front end side is connected to the vehicle outer side on the lower side between the vertical cells of the plate-like expansion portion, It is arranged so as to overlap the outside of the vehicle-like inflatable portion, and can cooperate with the portion connected to the front pillar portion to generate a tension along the vehicle front-rear direction at the time of completion of deployment Flexible traction material,
  It is desirable to provide and configure.
[0013]
[0014]
【The invention's effect】
  In the head protection airbag device according to the present invention, the airbag is separated from the front pillar portion in the plate-like inflating portion if the inflating gas is introduced to complete the deployment and inflation.A part of at least the lower side of the rear part isIt arrange | positions so that it may curve inside a vehicle.That is, since the end-side mounting portion is bent inward and attached to the vehicle body side in advance, when the airbag is inflated and inflated, it is surely near the rear portion of the plate-like inflating portion, that is, at the end. The vicinity of the lower side of the side attachment portion can be curved toward the vehicle interior side.for that reason,Of the curved part of the rear partCurved stateLay flatFor deformation of the lower edge side part to the outside of the car,At least a part of the curved part on the lower side of the rear part is maintained in a curved state.Shape retention is imparted. On the other hand, since the end portion in the front-rear direction of the vehicle in the airbag away from the curved portion of the plate-like inflating portion is attached to the front pillar portion disposed in the substantially vertical direction,Of the rear partIn cooperation with the shape retention of the lower edge side portion, the airbag lower edge side portion is difficult to move to the outside of the vehicle, and even if the pressing force to the outside of the vehicle acts on the airbag, the airbagThe entireThe movement to the outside of the vehicle can be regulated.
[0015]
  Then, the air that has completed the expansion and expansion can be provided without providing a pulling member such as a tension belt or a tension cross that extends long away from the front pillar portion on the end side of the plate-like expansion portion away from the front pillar portion. Since the bag is difficult to move to the outside of the vehicle, the storage space in the vehicle front-rear direction of the airbag that is folded and stored on the upper edge side of the side window periphery can be made compact as much as the traction material is unnecessary.
[0016]
  Therefore, in the head protection airbag device according to the present invention, the movement of the airbag to the outside of the vehicle when deployment and inflation are completed can be restricted, and the storage space in the front-rear direction of the airbag can be made compact.
  Further, if the rear-side portion on the end side curved toward the vehicle inner side in the plate-like inflating portion of the airbag is configured to cover the vehicle inner side of the end pillar portion serving as the rear pillar portion on the rear end side of the vehicle, the airbag Since the rear end side of the plate-like inflating portion is supported by the end side pillar portion with one front end side in the front and rear direction attached to the front side pillar portion, the entire vehicle outer side along the front and rear direction of the airbag It is possible to restrict movement to
[0017]
  Further, in the head protection airbag device according to the present invention, a pickup vehicle such as a single cab vehicle or a double cab vehicle in which a rear wall portion substantially orthogonal to the side window is disposed on the rear side of the side window covered by the airbag. Even if the plate-like inflating part is arranged close to the rear wall part without arranging the pulling material long or at all on the air bag so that it is mounted on the air bag, etc. Since the movement to the outside of the vehicle can be restricted, the side window of the pickup vehicle can be covered accurately.
[0018]
[0019]
[0020]
[0021]
  And, as in claim 2, the plate-like inflating portion when the airbag has been deployed and inflated covers the inside of the end-side pillar portion, and at least from the end-side pillar portion to the end-side pillar portion and the vehicle front-rear direction. If configured so as to be able to cover the inner side of the vehicle up to the adjacent adjacent pillar part, the plate-like inflating part is supported by the end side pillar part and the adjacent pillar part, and further, the end side pillar part and the adjacent pillar part The movement to the vehicle outside of the part between can be controlled.
[0022]
  In the above case, if configured as in claim 3, the lower horizontal cell disposed on the lower edge side of the plate-like inflating portion when the airbag is inflated and inflated is substantially rod-shaped along the longitudinal direction of the vehicle. Therefore, rigidity along the longitudinal direction of the vehicle can be given to the lower edge side of the plate-like inflating part, and the lower horizontal cell itself is also connected to the end side / adjacent side. Since it is supported by the pillar portion, it is possible to further suppress the movement of the portion between the end side and the adjacent pillar portion in the airbag when the inflation and inflation are completed to the outside of the vehicle.
[0023]
  Further, even when configured as in claim 4, the upper horizontal cell disposed on the upper edge side of the plate-like inflating portion extends substantially in the form of a rod along the front-rear direction of the vehicle when the airbag has been deployed and inflated. Therefore, rigidity along the longitudinal direction of the vehicle can be given to the plate-like inflating portion, and the upper horizontal cell itself is supported by the end side / adjacent pillar portion. Therefore, the movement of the portion between the end side and the adjacent pillar portion in the airbag at the time when the inflation and inflation are completed can be further suppressed.
[0024]
  In this case, in particular, if the plate-like expansion part is provided with the lower horizontal cell on the lower edge side, the end-side / adjacent pillar part of the plate-like expansion part is supported by the upper and lower horizontal cells and the support of the end-side / adjacent pillar part. The portion between them increases the plate-like rigidity, and even if it receives a pressing force to the outside of the vehicle, the movement to the outside of the vehicle can be further prevented.
[0025]
  Further, when configured as in claim 5, the airbag at the time of completion of deployment inflates the vehicle in the longitudinal direction from the portion attached to the front pillar portion to the portion where the traction material is disposed. Therefore, the movement of the entire airbag to the outside of the vehicle can be suppressed. Of course, since this traction material is disposed so as to overlap the vehicle exterior side of the plate-shaped inflating portion, it is possible to suppress as much as possible the increase in the storage space of the airbag in the vehicle front-rear direction. The pulling member itself can support the outside of the plate-like inflating portion.
[0026]
[0027]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0028]
  A head protection airbag apparatus M according to the embodiment shown in FIG. 1 is mounted on a double cab vehicle V, and includes an airbag 12, an inflator 39, and an airbag cover 11.
[0029]
  The double cab vehicle V includes side windows SW1 and SW2 that are disposed on the side of the vehicle side surface VS and are disposed on the side of the front and rear seats on which the occupants are seated, and the side window SW2 on the rear side of the side window SW2. The rear wall portion 7 is arranged so as to be substantially orthogonal to the rear wall portion 7. In addition, the double cab vehicle V extends obliquely downward from the roof side rail portion RR on the front side of the side window SW1, and is disposed between the front pillar portion FP and the side windows SW1 and SW2 disposed substantially vertically. A center pillar portion CP extending downward from the rail portion RR and a rear pillar portion RP extending downward from the roof side rail portion RR between the side window SW2 and the rear wall portion 7 are configured. Further, the side window SW1 is arranged on the side of the front seat. In the case of the embodiment, the side window SW1 is a side window of the front door, and the side window SW2 is arranged on the side of the rear seat. In some cases, the side window of the rear door is used.
[0030]
  Synthetic resin garnishes 3, 5, and 6 are disposed on the pillar portions FP, CP, and RP so as to cover the inner panel 1a made of sheet metal on the vehicle body (body 1) side. Further, on the roof side rail portion RR, a synthetic resin roof head lining 4 is disposed on the vehicle inner side so as to cover the inner panel 1a.
[0031]
  In the case of the embodiment, the front pillar portion FP becomes the front pillar portion FP, and the rear pillar portion RP is covered with a later-described rear plate-like inflation portion 16 of the airbag 12 at the time of inflation. Thus, the center pillar portion CP is the adjacent pillar portion P2 adjacent to the end side pillar portion P1 on the front side of the end side pillar portion P1 along the vehicle front-rear direction (see FIGS. 1 and 4). Further, the center pillar portion CP and the rear pillar portion RP are different (second) pillar portions with respect to the front pillar portion FP.
[0032]
  Further, as shown in FIG. 1, the rear wall portion 7 is provided with a rear window RW at the upper portion thereof to cover the inner panel 1b made of sheet metal on the vehicle body (body 1) side and the inner side of the inner panel 1b. And a rear trim 8 made of synthetic resin. The upper end side of the rear wall portion 7 is covered with a roof head lining 4 extending from the ceiling side.
[0033]
  In the embodiment, the airbag cover 11 includes lower edges 3a and 4a of the front pillar garnish 3 and the roof head lining 4. The airbag cover 11 is disposed so as to cover the inner side of the airbag 12 that is folded and stored, and is disposed on the airbag 12 so that the airbag 12 can be protruded toward the inner side when deployed. It is configured to be pushed to open inside the vehicle.
[0034]
  The airbag 12 is folded and stored on the inner edge side of the side windows SW1 and SW2 and the rear window RW across the center pillar portion CP and the rear pillar portion RP, and is covered with the airbag cover 11. . As shown in FIGS. 1 to 5, the airbag 12 has a substantially rectangular plate shape that can cover the vehicle interior sides of the side windows SW <b> 1 and SW <b> 2, the center pillar portion CP, and the rear pillar portion RP as shown in FIGS. In the case of the embodiment, as shown in FIG. 1, the rear end side of the airbag 12 enters the upper side of the rear wall portion 7 and is covered and stored by the roof head lining 4.
[0035]
  As shown in FIGS. 2 and 3, the airbag 12 includes a main body portion 13, a first tension cloth 32 as a first traction member coupled to the vehicle outer side O on the rear side of the main body portion 13, and a main body portion. 13 is composed of three members, a second tension cloth 33 as a second traction material coupled to the front portion side of 13. The main body 13 is formed by bag weaving using polyamide yarn, polyester yarn or the like. The first and second tension cloths 32 and 33 are formed of a flexible woven fabric such as a polyamide yarn or a polyester yarn.
[0036]
  The main body 13 is inflated so that the inflation gas G from the inflator 39 flows in and separates the vehicle interior side wall portion 14a and the vehicle exterior wall portion 14b, and the inflation gas G does not flow in. And an inflow portion 24.
[0037]
  The gas inflow portion 14 flows into the gas inflow portion 14 with the front and rear plate-like inflating portions 15 and 16 that expand into a substantially rectangular plate shape when the inflating gas G flows in, and the inflation gas G from the inflator 39. And an inflow port portion 23 to be configured. The front plate-like expansion portion 15 flows in the expansion gas G to cover the inside of the side window SW1, and the rear plate-shaped expansion portion 16 flows the expansion gas G into the side window SW2 and the center pillar portion CP. -Each expands and expands so as to cover the inside of the vehicle with the rear pillar portion RP.
[0038]
  Each of the front plate-like and rear plate-like inflating portions 15 and 16 is configured by disposing a plurality of cells 17 that are inflated in a substantially rod shape by allowing the inflation gas G to flow in. Furthermore, these cells 17 are constituted by vertical cells 18 that swell in a substantially bar shape in the up-down direction and horizontal cells 19 that swell in a substantially bar shape along the front-rear direction of the vehicle V when expanded.
[0039]
  The front plate-like inflating portion 15 is disposed on the upper edge side of the three vertical cells 18A, 18B, and 18C arranged in order from the front side, and the upper end side of each of the vertical cells 18A, 18B, and 18C. And a front horizontal cell 19 </ b> A communicated with each other. Further, the rear plate-like inflating portion 16 is arranged in order from the front side to the four vertical cells 18D, 18E, 18F, and 18G, and the lower edge side of the vertical cells 18D and 18G. The lower horizontal cell 19B communicated and the upper horizontal cell 19C disposed on the upper edge side of the expansion portion 16 and communicated with the upper ends of the vertical cells 18D, 18E, 18F, and 18G. .
[0040]
  In the case of the embodiment, the front horizontal cell 19A and the upper horizontal cell 19C are connected in a straight line along the front-rear direction of the vehicle V, and the expansion gas G flowing from the inflow port 23 is supplied to each vertical cell. The supply path 22 for the expansion gas G to be supplied to the upper end side of the 18 will be configured.
[0041]
  In the case of the embodiment, the supply channel portion 22 projects in a cylindrical shape upward at an intermediate portion in the front-rear direction (a boundary portion between the front horizontal cell 19A and the upper horizontal cell 19C) and is connected to the inflator 39. An inflow port 23 is provided.
[0042]
  Further, in the case of the embodiment, when the airbag 12 is completely deployed and inflated, the vertical cell 18D of the rear plate-like inflating portion 16 covers the inside of the center pillar portion CP as the adjacent pillar portion P2, and the vertical cell 18G is comprised so that the vehicle inside of the rear pillar part RP as the end side pillar part P1 may be covered. Further, when the airbag 12 has been deployed and inflated, the front ends 20a and 21a of the lower horizontal cell 19B and the upper horizontal cell 19C are both arranged on the upper and lower sides inside the adjacent pillar portion P2, and the lower horizontal cell 19B and the upper horizontal cell 19C are disposed. Both the rear ends 20b and 21b of the cell 19C are arranged above and below the vehicle interior side of the end-side pillar portion P1.
[0043]
  The non-inflow part 24 includes a peripheral part 25 arranged at the periphery of the gas inflow part 14, a partition part 27, an attachment part 28, and a plate-like part 30 so as to surround the gas inflow part 14. Has been. Further, the non-inflow portion 24 extends upward from the peripheral edge portion 25 and the partitioning portion 27 on the lower edge 12b side of the airbag 12, and includes a plurality of thickness regulating portions 26 that partition the vertical cells 18 in the vehicle front-rear direction. I have.
[0044]
  As shown in FIG. 2, a plurality of (six in the embodiment) attachment portions 28 (28A, 28B, 28C, 28D, 28E, and 28F) are arranged so as to extend upward from the upper edge 12a side of the airbag 12. It is installed. Each mounting portion 28 is provided with a mounting hole 28a through which a mounting bolt 37 (see FIGS. 1 and 5) is inserted. Each attachment portion 28 is attached with a backing plate 36 (see FIGS. 1 and 5), and is fixed to the inner panels 1a and 1b on the body 1 side using bolts 37.
[0045]
  The front end attachment portion 28A of the airbag 12 is disposed at the front end of the second tension cloth 33, and is fixed to the inner panel 1a on the lower side of the front pillar portion FP as the front pillar portion. In other words, the other mounting portions 28B, 28C, 28D, and 28E are fixed to the inner panel 1a of the roof side rail portion RR on the upper edge side of the peripheral edges of the side windows SW1 and SW2. And the end side attachment part 28F of the rear end is arrange | positioned in the back side rather than the upper direction of the vertical cell 18G in the state which expand | deployed the airbag 12 flatly. This end side attachment portion 28F is disposed on the upper edge side of the rear window RW in the vicinity of the end side pillar portion P1 in the rear wall portion 7, and is attached and fixed to the inner panel 1b of the rear wall portion 7 using bolts 37. Yes.
[0046]
  Further, in the case of the embodiment, the adjacent mounting portion 28E adjacent on the front side of the end side mounting portion 28F is disposed at a position above the vertical cell 18F adjacent on the front side of the rearmost vertical cell 18G, and the vehicle V At the time of mounting to the inner panel 1a, it is attached and fixed to the inner panel 1a in the vicinity of the rear wall portion 7 above the rear pillar portion RP as the end pillar portion P1.
[0047]
  Therefore, when the airbag 12 is stored, the portion that is displaced from the side window SW2 and is disposed on the rear wall 7 side is the rear end side 16a of the rear plate-like inflatable portion 16 in the embodiment, and its adjacent attachment The rear portion 16a of the portion 28E is bent and arranged on the vehicle inner side I together with the end-side attachment portion 28F.
[0048]
  In the case of the embodiment, when the expansion and expansion are completed, the longitudinal cells 18E, 18F, and 18G on the rear side of the first edge 32c, which will be described later, reduce the width dimension in the front-rear direction. Therefore, when the airbag 12 is folded and stored, the rearmost vertical cell 18G is covered and stored by the roof head lining 4 on the rear wall 7 side, but the airbag 12 has been deployed and inflated. The longitudinal cell 18E / 18F is pulled toward the front side of the vehicle due to a reduction in the width dimension of the vertical cells 18E and 18F, and covers the vehicle inner side I of the end pillar portion P1 by a tension pulled toward the rear side of the third tension cloth 34 described later, and The upper and lower horizontal cells 19C and 19B are curved toward the vehicle inner side I so as to straddle the intersection C between the vehicle inner side I of the end side pillar portion P1 and the rear wall portion 7 along the rear ends 20b and 21b. (See FIG. 5).
[0049]
  Further, the plate-like portion 30 is disposed in order to secure the overall shape of the airbag 12 and reduce the volume of the gas inflow portion 14 to shorten the time until completion of deployment. The plate-like portion 30 is disposed as a substantially rectangular plate shape between the vertical cells 18D and 18E in the rear plate-like inflating portion 16 and between the upper and lower horizontal cells 19C and 19B.
[0050]
  The partition portion 27 is disposed so as to extend rearward from the lower end of the rear edge of the plate-like portion 30 and is disposed so as to partition each of the vertical cells 18E and 18F and the lower horizontal cell 19B.
[0051]
  As shown in FIGS. 2 and 3, the thickness restricting portion 26 extends upward from the peripheral edge 25 on the airbag lower edge 12b side so as to partition the vertical cells 18A, 18B, 18C, and 18D. 26A, 26B, and 26C, and thickness regulating portions 26D and 26E that extend upward from the partition portion 27 so as to partition the vertical cells 18E, 18F, and 18G.
[0052]
  The second tension cloth 33 is stitched to the front end side of the peripheral edge portion 25 and has a triangular plate shape extending forward from the front end side of the main body portion 13. The second tension cloth 33 has a mounting portion 28A disposed at the tip, and the mounting portion 28A is fixedly mounted on the inner panel 1a on the body 1 side on the lower side of the front pillar portion FP.
[0053]
  The first tension cloth 32 has a triangular plate shape that extends from the rear edge side of the plate-like portion 30 in the rear plate-like inflatable portion 16 to the end-side pillar portion P1 side and narrows the vertical dimension on the end-side pillar portion P1 side. It is said. The first tension cloth 32 is disposed so as to overlap the vehicle outer side O of the rear plate-like inflating portion 16, and the rear end portion 32a on the side of the end pillar portion P1 is connected to the upper edge side of the side window SW2 periphery (in detail). In other words, it is fixed to the inner panel 1a on the body 1 side of the roof side rail portion RR above the rear pillar portion RP, and the front end side extending to the front pillar portion FP side is set to the vehicle exterior side O on the rear end side of the plate-like portion 30. It is connected to. A mounting hole 32b through which the bolt 37 is inserted is formed in the rear end portion 32a. In the case of the embodiment, the rear end portion 32a shares the backing plate 36 and the mounting bolt 37, is fastened together with the mounting portion 28E, and is fixed to the inner panel 1a.
[0054]
  Further, the front end side of the first tension cross 32 is a front edge 32c constituting a triangular side of the cross 32, and the lower end 32d of the front edge 32c is connected to the lower side of the plate-like portion 30. The front edge 32 c is sewn to the vehicle outer side O of the plate-like portion 30.
[0055]
  The mounting hole 32b of the rear end portion 32a is set so as to be arranged below the mounting hole 28a of the mounting portion 28E as shown in FIG. When the expansion of the main body portion 13 is completed, the lower edge 32e of the first tension cross 32 is greatly pulled in cooperation with the second tension cross 33, and the main body portion 13 is pulled from the attachment portion 28A on the front end side. A large tension along the front-rear direction is generated toward the lower end 32d of the front edge 32c.
[0056]
  In addition, the triangular portion below the end side attachment portion 28F in the peripheral edge portion 25 of the airbag 12 is also connected to the lower end side of the vertical cell 18G, although the length dimension in the vehicle front-rear direction is shortened. Thus, the third tension cloth 34 is configured to generate a tension along the front-rear direction of the vehicle V when the airbag 12 is fully deployed and inflated. That is, when the airbag 12 is completely deployed and inflated, the vertical cells 18E, 18F, and 18G are inflated to reduce the width dimension in the vehicle front-rear direction, and the vertical cell 18G on the rear end side moves forward, and the third tension The cross 34 also generates tension in the vehicle longitudinal direction.
[0057]
  As shown in FIG. 1, the inflator 39 includes a substantially cylindrical main body 39 a and a supply pipe 39 b that guides the expansion gas from the main body 39 a downward. At the lower end of the supply pipe 39 b, The upper end of the inflow port portion 23 of the airbag 12 is sheathed, and is connected to the airbag 12 using a clamp (not shown). The inflator 39 is attached and fixed to the inner panel 1a of the roof side rail portion RR above the center pillar portion CP by the lower edge 4a of the roof head lining 4 using the bracket 40.
[0058]
  The mounting of the head protection airbag device M of the embodiment on the vehicle V will be described. First, the airbag 12 is flatly deployed so that the lower edge 12b side of the airbag 12 approaches the upper edge 12a side. Make a number of folds along the longitudinal direction and fold the bellows. Then, it is appropriately wrapped with a tape material (not shown) for preventing breakage.
[0059]
  Thereafter, the contact plate 36 is attached to each attachment portion 28. Further, the inflator 39 is connected to the inflow port portion 23 using the clamp, and then the mounting bracket 40 is attached to the periphery of the inflator 39, and the inflator 39 is assembled to the airbag 12 to form an airbag assembly. . The attachment portion 28E and the rear end portion 32a of the first tension cloth 32 share the contact plate 36.
[0060]
  Thereafter, each mounting portion 28 is fixed to the inner panels 1a and 1b using the mounting bolts 37, and the mounting bracket 40 is fixed to the inner panel 1a using the bolts. A solid body can be attached to the body 1 of the vehicle V. The end side attachment portion 28F is bent from the upper side of the rear pillar portion RP to the vehicle inner side I, and is attached and fixed to the inner panel 1b on the upper edge side of the rear window RW in the rear wall portion 7.
[0061]
  A lead wire (not shown) extending from the inflator 39 is connected to a predetermined airbag operating circuit, and the front pillar FP is attached and fixed to the inner panel 1a in the front pillar portion FP, and the side rail in the roof side rail portion RR is fixed. The roof head lining 4 is attached and fixed to the inner panels 1a and 1b on the upper edges of the windows SW1 and SW2 and the rear window RW, and the center pillar CP as the adjacent pillar P2 and the rear pillar RP as the end pillar P1. The garnishes 5 and 6 are fixed to the inner panel 1a of the body 1, and the rear trim 8 is fixed to the inner panel 1b of the rear wall portion 7, whereby the head protection airbag device M can be mounted on the vehicle V. .
[0062]
  After that, when the inflator 39 is activated, the expansion gas G flows into the supply passage portion 22 of the gas inflow portion 14 from the inflow port portion 23, breaks the tape material (not shown), and further each vertical cell 18 And the lateral cell 19B is expanded and inflated, and the airbag 12 is pushed by pushing the lower edges 3a and 4a of the pillar garnish 3 and the roof head lining 4 as the airbag cover 11 toward the inside of the vehicle. As shown by the solid lines in FIG. 4, the airbag 12 protrudes downward from the upper edge side of the side windows SW1 and SW2 and the rear window RW, and the airbag 12 covers the inside of the side windows SW1 and SW2, the center pillar portion CP, and the rear pillar portion RP. It will be.
[0063]
  At this time, if the airbag 12 flows in the inflation gas G to complete the deployment and inflation, the rear plate-like inflatable portion 16 has a rear side portion 16a that is the rear end side of the end pillar portion P1 side. Even when the vehicle is bent to the inner side I and mounted on the vehicle V, and has been completely inflated, as shown by the solid lines in FIGS. 4 and 5 and the two-dot chain line in FIG. The part 16b is curvedly disposed on the vehicle interior side I. That is, the rear ends 20b and 21b of the vertical cells 18G and the horizontal cells 19B and 19C are pulled toward the front of the vehicle due to the reduction in the width of the vertical cells 18E and 18F when the airbag 12 is completely inflated, and the third tension cross 34, the vehicle inner side I of the end side pillar part P1 is covered by the tension pulled to the vehicle rear side of the end side pillar part P1.Car insideTo the vehicle interior I so as to straddle the intersection C with the rear wall 7. Therefore, the rear plate-like inflatable portion 16 at the completion of the expansion isOf the curved partCurved stateLay flatFor such deformation to the vehicle outer side O of the lower edge side portion 16c of the rear plate-like expanded portion 16,Like maintaining a curved stateShape retention is imparted. On the other hand, the front end portion 28A in the front-rear direction of the vehicle V in the airbag 12 away from the curved portion of the rear plate-like inflatable portion 16 is attached to the lower side of the front pillar portion FP disposed substantially in the vertical direction. Therefore, in cooperation with the shape retaining property of the lower edge side portion 16c, the lower edge 12b side of the airbag 12 becomes difficult to move to the vehicle outer side O, and the pressing force to the vehicle outer side O acts on the airbag 12. The airbag 12The entireThe movement to the vehicle outer side O can be restricted.
[0064]
  The rear plate-like inflatable portion 16 is not provided with a traction material such as a tension belt / tension cross that extends long away from the front pillar portion FP in the rear portion 16a on the end side away from the front pillar portion FP. In both cases, since the airbag 12 that has been deployed and inflated is difficult to move to the vehicle outer side O, the storage space in the vehicle front-rear direction of the airbag 12 that is folded and stored on the upper edge side of the periphery of the side window SW1, SW2 is Since a traction material that extends long in the front-rear direction is not required, it can be made compact.
[0065]
  Therefore, in the head protection airbag device M of the embodiment, the movement of the airbag 12 to the vehicle outer side O when the deployment and inflation is completed can be restricted, and the storage space in the front-rear direction of the airbag 12 can be made compact. .
[0066]
  Further, in the embodiment, the rear plate-like inflatable portion 16 at the completion of the inflation and inflation of the airbag 12 is disposed so as to cover the vehicle interior I of the center pillar portion CP and the rear pillar portion RP different from the front pillar portion FP. On the contrary, since the structure is supported by the pillars CP and RP, the movement to the vehicle outer side O can be restricted even if the pressing force to the vehicle outer side O is further received.
[0067]
  In the embodiment, the rear side portion 16a of the rear plate-like expansion portion 16 at the time when the expansion and expansion is completed is disposed so as to cover the vehicle inner side I of the rear pillar portion RP. The part 16a may be arranged in front of the vehicle inner side I of the rear pillar part RP, and the vehicle outer side O of the rear plate-like expansion part 16 may be supported only by the center pillar part CP. In this case, the rear plate-like expanded portion 16 is configured to cover the center pillar portion CP as the second pillar portion at a substantially intermediate portion in the front-rear direction.
[0068]
  Conversely, the center pillar portion CP may be eliminated. Even in this case, the rear side portion 16a on the end portion side curved toward the vehicle inner side I in the rear plate-like inflating portion 16 of the airbag 12 is the vehicle inner side I of the pillar portion P1 (RP) on the end side in the front-rear direction of the vehicle V. The rear plate-like inflatable portion 16 that becomes the other end portion side in the front-rear direction of the airbag 12 in a state where one end portion 28A in the front-rear direction of the airbag 12 is attached to the front pillar portion FP. Since the end portion side 16a of the airbag 12 is supported by the end side pillar portion P1, the movement restriction of the airbag 12 toward the entire vehicle outer side O along the front-rear direction becomes possible.
[0069]
  Incidentally, the above configuration is suitable for the head protection airbag device M1 mounted on the single cab vehicle V1 as shown in FIG. That is, in this airbag apparatus M1, the airbag 12A has a plate-like inflating portion 16A including a plurality of vertical cells 18 arranged in parallel in the front-rear direction, and a flexibility connected to the front end of the plate-like inflating portion 16A. A belt front end portion 44a (attachment portion 28A) on the front end side of the airbag 12A is attached to a front pillar portion FP disposed substantially in the vertical direction. The plate-like inflating portion 16A is disposed on the end side away from the front pillar portion FP in the airbag 12A, and inflates the inflation gas from the inflator 39A to inflate into a substantially flat plate shape, so that the vehicle interior side of the side window SW. Can be covered. The airbag 12A has a rear wall portion together with the inflator 39A in a state in which the end side attachment portion 28F on the rear end side is bent and connected to the inflator 39A with respect to the attachment portion 28 disposed on the upper edge side. 7 to the inner panel 1b. Therefore, the airbag 12A is arranged so that the rear side portion 16a on the end portion side away from the front pillar portion FP in the plate-like inflating portion 16A can be curved toward the vehicle inner side I when the inflation is completed. Has been.
[0070]
  Even in the head protection airbag device M1, when the airbag 12A is fully deployed and inflated, as shown by a two-dot chain line in FIG. 6, at least a part 16b on the lower side of the rear side portion 16a of the plate-like inflation portion 16A It is curvedly arranged on the vehicle interior side I. Therefore, the plate-like expansion part 16A isOf the curved partCurved stateLay flatFor such deformation to the vehicle outer side O of the lower edge side portion 16c of the plate-like expansion portion 16A,Like maintaining a curved stateShape retention is imparted. On the other hand, the front end 44a in the front-rear direction of the vehicle V1 in the airbag 12A away from the curved portion of the plate-like inflatable portion 16A is attached to the lower side of the front pillar portion FP disposed substantially in the vertical direction. Therefore, in cooperation with the shape retaining property of the lower edge side portion 16c, the lower edge 12b side of the airbag 12A becomes difficult to move to the vehicle outer side O, and the pressing force to the vehicle outer side O acts on the airbag 12A. Air bag 12A overallThe movement to the vehicle outer side O can be restricted. As a result, the traction material is attached to the airbag 12A so as to be mounted on the single cab vehicle V1 in which the rear wall portion 7 substantially orthogonal to the side window SW is disposed on the rear side of the side window SW covered by the airbag 12A. Even if the plate-like inflating part 12A is arranged close to the rear wall part 7 without being arranged long or at all, the movement of the airbag 12A during deployment to the outside O can be restricted. Therefore, similarly to the embodiment, the side window SW of the pickup vehicle V1 can be accurately covered.
[0071]
  Further, in this head protecting airbag device M1, the rear-side portion 16a on the end side curved toward the vehicle inner side I in the plate-like inflating portion 16A of the airbag 12A is a pillar portion on the end side in the front-rear direction of the vehicle V1. It is set as the structure which covers the vehicle inside I of P1 (RP). Therefore, in the state where one end portion 28A in the front-rear direction of the airbag 12A is attached to the front pillar portion FP, the end portion side of the plate-like inflating portion 16A that is the other end portion side in the front-rear direction of the airbag 12A Since 16a is supported by the end-side pillar portion P1, movement of the airbag 12A toward the entire vehicle exterior O along the front-rear direction can be restricted.
[0072]
  Further, in the head protection airbag device M of the embodiment, when the airbag 12 flows in the inflation gas G to complete the deployment and inflation, the rear plate-like inflation portion 16 is as shown in FIGS. From the end-side pillar portion P1 to the adjacent pillar portion P2 adjacent to the end-side pillar portion P1 in the vehicle front-rear direction in a state where the cells 18D, 18E, 18F, 18G, 19B, and 19C are expanded in a plate shape. Since the vehicle inner side I is covered, the surface of the vehicle outer side O is supported by the end side / adjacent pillar portions P1 and P2.
[0073]
  In other words, the airbag 12 that has been deployed and inflated is inflated in a plate shape between the end side and the adjacent pillar portions P1 and P2, and the rear plate-like inflating portion 16 responds to deformation of the lower edge side portion 16b toward the vehicle outer side O Since the vehicle exterior O is supported by the end side / adjacent pillar portions P1 and P2 in a state in which the shape retainability is improved, the rigidity is improved and the pressing force to the vehicle exterior O is reduced. Even if it is received, it is more difficult to move to the vehicle outer side O.
[0074]
  Furthermore, in the embodiment, when the airbag 12 is completely deployed and inflated, the lower horizontal cell 19B disposed in the lower edge portion 16c of the rear plate-like inflatable portion 16 extends in a substantially rod shape along the front-rear direction of the vehicle V. Therefore, rigidity along the front-rear direction of the vehicle V can be given to the lower edge side portion 16c of the rear plate-like inflatable portion 16, and the lower horizontal cell 19B itself is Since both ends 20a and 20b are supported by the end side / adjacent pillar portions P1 and P2, movement of the portion between the end side and adjacent pillar portions P1 and P2 in the airbag 12 at the time of completion of deployment to the vehicle outer side O can be performed. It can be further suppressed.
[0075]
  Further, in the embodiment, the upper horizontal cell 19C disposed on the upper edge side 16d of the rear plate-like inflating portion 16 extends substantially in a rod shape along the front-rear direction of the vehicle V when the airbag 12 is completely deployed and inflated. Therefore, rigidity along the front-rear direction of the vehicle V can be imparted to the rear plate-like inflatable portion 16, and the upper horizontal cell 19C itself connects the front and rear ends 21a and 21b to the end side. -Since it is supported by the adjacent pillar portions P1 and P2, the movement of the portion between the end side and the adjacent pillar portions P1 and P2 in the airbag 12 at the time of completion of the inflation can be further suppressed. .
[0076]
  In particular, in the embodiment, the rear plate-like inflating portion 16 includes the lower horizontal cell 19B on the lower edge side, and the rear plate is supported by the upper and lower horizontal cells 19C and 19B and the end side and adjacent pillar portions P1 and P2. The plate-like inflating portion 16 increases the plate-like rigidity, and even if it receives a pressing force to the vehicle outer side O, the movement to the vehicle outer side O can be further prevented.
[0077]
  In the embodiment, the vertical cell 18D, the lower horizontal cell 19B, and the vertical cell 18G that are in communication with each other at the position of the outer peripheral edge of the rear plate-like inflating part 16 itself are substantially U-shaped when viewed from the vehicle inner side I. Or a substantially square annular expansion portion as viewed from the vehicle interior side I by the vertical cell 18D, the lower horizontal cell 19B, the vertical cell 18G, and the upper horizontal cell 19C communicating with each other. Further, the plate-like rigidity is improved, and even when a pressing force to the vehicle outer side O is received, the movement to the vehicle outer side O can be further prevented.
[0078]
  Furthermore, in the embodiment, the airbag 12 at the completion of the deployment and inflation may generate tension in the vehicle longitudinal direction from the portion 28A attached to the front pillar portion FP to the portion where the first tension cross 32 is disposed. Therefore, the movement of the entire airbag 12 to the vehicle outer side O can be suppressed. Of course, since the first tension cloth 32 is disposed so as to overlap the vehicle outer side O of the rear plate-like inflating portion 16, it is possible to increase the storage space in the vehicle longitudinal direction of the airbag 12 as much as possible. Further, the tension cloth 32 itself can support the outside O of the cells 18E, 18F, and 19C in the plate-like inflating portion 16.
[0079]
  Furthermore, in the embodiment, the end side attaching portion 28F is bent in advance to the vehicle interior side I and attached to the inner panel 1b on the body 1 side. A part 16b of the end portion side portion 16a on the end side pillar portion P1 side in the rear plate-like inflatable portion 16 can be curved toward the vehicle inner side I.
[0080]
  In the embodiment, the end pillar portion P1 of the vehicle V is used as the rear pillar portion RP on the rear end side of the vehicle V, and the adjacent pillar portion P2 is used as the center pillar portion CP on the front side of the end pillar portion P1. The case where the rear end side 16a of the rear plate-like expansion portion 16 covering the vehicle inner side from the rear pillar portion RP to the center pillar portion CP is bent toward the vehicle inner side I has been described. However, the front and rear directions are reversed, the front pillar FP is the end pillar P1, the center pillar CP is the adjacent pillar P2, and the front end of the front plate-like expansion part 16 is bent toward the vehicle interior I. Alternatively, it may be configured.
[0081]
  Further, if the airbag can bend and inflate by bending the end side of the plate-like inflating portion toward the inside of the vehicle, the pillar portion (rear pillar portion) and the front end on the rear end side of the vehicle as described in the embodiment and the above In addition to disposing the end side of the plate-like inflating portion on the side pillar portion (front pillar portion), as shown in FIG. 7, the plate is placed near the pillar portion P1 near the middle in the longitudinal direction of the vehicle. The end attachment portion 28F on the upper edge side of the inflatable portion 16 may be bent and attached to the vehicle inner side I. In the case of the illustrated example, the end side attaching portion 28F is attached and fixed to a bracket 41 having an L-shaped cross section fixed to the inner panel 1a. It is bent and attached to the inner panel 1a on the body 1 side.
[0082]
  Further, when the end side of the plate-like inflating portion is bent toward the vehicle inner side when the airbag is inflated and inflated, the end side mounting portion 28F above the end side is bent in advance toward the vehicle inner side I. In addition, for example, as shown in FIG. 8, when the expansion and expansion are completed, the vehicle outer side wall portion 14b is made easier to extend than the vehicle inner side wall portion 14a in the gas inflow portion, so that the vertical cell 18 or the like Regarding the membrane length along the vehicle longitudinal direction at the inflated portion, the membrane length of the vehicle outer side wall portion 14b is made longer than the vehicle inner side wall portion 14a. The end portion side of the inflatable portion 16 may be bent toward the vehicle inner side I.
[0083]
  Furthermore, in the airbag 12 of the embodiment, the plate-like inflating portion 16 in which the end portion side 16a is bent toward the vehicle inner side I has end-side / adjacent pillar portions P1, P2, including the end-side and adjacent pillar portions P1, P2. Although the case where it comprised so that only P2 may be covered was shown, you may comprise so that the plate-shaped expansion part of the airbag of this invention may cover the front side etc. of the adjacent pillar part which leaves | separates from an end side pillar part.
[Brief description of the drawings]
FIG. 1 is a front view of a head protection airbag device according to an embodiment of the present invention as seen from the vehicle inner side showing a vehicle mounting state.
FIG. 2 is a front view showing a state in which the airbag used in the embodiment is flatly deployed.
FIG. 3 is a transverse cross-sectional view when an air bag used in the embodiment is inflated, and corresponds to a III-III portion in FIG. 2;
FIG. 4 is a front view as seen from the inside of the vehicle, illustrating the operation of the airbag device of the embodiment.
FIG. 5 is a schematic partial plan view of the rear airbag device according to the embodiment at the time of completion of deployment and inflation on the rear end side of the rear plate-like inflation portion.
FIG. 6 is a perspective view of the head protection airbag device according to the modification of the embodiment as seen from the vehicle interior side showing a vehicle mounting state.
FIG. 7 is a schematic partial cross-sectional view showing another modification of the embodiment.
FIG. 8 is a schematic partial cross-sectional view showing an airbag according to still another modified example of the embodiment.
[Explanation of symbols]
  12.12A.12B ... Airbag,
  16.16A ... Plate-shaped inflating part
  16a ... (end side part) rear end side part,
  19B ... Lower horizontal cell,
  19C ... upper horizontal cell,
  28F ... end side mounting part,
  32 ... (traction material) first tension cloth,
  SW ・ SW1 ・ SW2… Side window,
  FP ... Front side pillar part (front pillar part),
  P1 ... end pillar part (rear pillar part),
  P2 ... Adjacent pillar part (center pillar part),
  V ... (vehicle) double cab car,
  V1 ... (vehicle) single cab car,
  I ... Inside the car,
  O ... the outside of the car,
  M · M1: Head protection airbag device.

Claims

Folded and stored on the upper edge side of the vehicle side window periphery, and equipped with an airbag that expands and expands downward when inflating gas flows in,
The airbag is attached to a front pillar portion as a front pillar portion disposed in a substantially vertical direction on the front end side in the front-rear direction of the vehicle, and is inflated on a rear end side away from the front pillar portion. A plate-like inflatable portion capable of covering the inner side of the side window by inflating gas into a substantially flat plate shape;
The plate-like inflating portion is configured to include a rear side portion capable of covering the inner side of the end pillar portion as a rear pillar portion on the rear end side of the vehicle that is separated from the front side pillar portion when the expansion and expansion is completed,
A head protection airbag device mounted on a vehicle having a rear wall portion disposed substantially orthogonal to the side window on the rear side of the side window,
The airbag includes a plurality of attachment portions to be fixed to the vehicle body side on the upper edge side,
The end side attachment portion of the rearmost end is bent from the upper side of the end side pillar portion to the vehicle inner side, and attached to the vehicle body side of the rear wall portion,
An adjacent mounting portion adjacent on the front side of the end side mounting portion is mounted on the vehicle body side in the vicinity of the rear wall portion on the upper side of the end side pillar portion,
Wherein at least part of the lower side of the rear portion of the air bag, the at completion of inflation the air bag, so as to straddle the front Symbol end side pillar portion crossing portion between the rear wall portion, said end side pillar from the vehicle interior side of the part curved to the inner side, the head protection air bag device characterized in that it is arranged.

The plate-like inflating portion at the time when the airbag is inflated and inflated covers the inner side of the end-side pillar portion and is adjacent to at least the end-side pillar portion and the front side in the vehicle front-rear direction from the end-side pillar portion. The head protection airbag device according to claim 1, wherein the head protection airbag device is configured to be able to cover a vehicle inner side to the adjacent pillar portion.

The plate-like inflating portion of the airbag has a substantially rod-like shape along the front-rear direction of the vehicle so that the inflating gas flows into the inside and connects the inner side of the end-side pillar portion and the adjacent pillar portion. The head protection airbag device according to claim 2, further comprising a lower horizontal cell extending on a lower edge side.

The plate-like inflating portion of the airbag has a substantially rod-like shape along the front-rear direction of the vehicle so that the inflating gas flows into the inside and connects the inner side of the end-side pillar portion and the adjacent pillar portion. The head protection airbag device according to claim 2 or 3, wherein the upper horizontal cell is provided on the upper edge side.

The plate-like inflating portion is configured to include a plurality of vertical cells arranged in the front-rear direction by inflating an expansion gas and inflating in a substantially bar shape in the up-down direction,
The airbag is
The rear end side is connected and fixed to the upper edge side of the side window above the end side pillar portion, and the front end side is connected to the vehicle outer side on the lower side between the vertical cells of the plate-like expansion portion, It is arranged so as to overlap the outside of the vehicle-like inflatable portion, and can cooperate with the portion connected to the front pillar portion to generate a tension along the vehicle front-rear direction at the time of completion of deployment Flexible traction material,
The head protecting airbag device according to any one of claims 1 to 4, wherein the head protecting airbag device is provided.