JP2006117112A - Head protective airbag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a head protective airbag which is capable of easily checking the arrangement position and the folding width of bellows folds or twist prevention when the folding is completed, and easily mounted on a vehicle in an adequate posture. <P>SOLUTION: The head protective airbag 19 comprises a mounting part 40 for mounting on the vehicle body side, and a gas flow-in part 21 to enable inflation gas to flow into a space between both wall parts on the in-cabin side and the outer side of the vehicle so as to cover a window. The gas flow-in part 21 is folded so as to arrange a bellows folding part 55 as an upstream side part of the inflation gas, and arrange a folding lump part 56 to be extruded below the bellows folding part 55 when unfolding the bellows folding. Marks 45/46 for checking folds are arranged and marks 48/49/50/5 for checking the twist prevention are arranged at the position of a first fold D1 and a second fold D2 at adequate positions of the bellows folding in the gas flow-in part 21. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、車両の窓（サイドウインド）の上縁側から、膨張用ガスを流入させて下方に展開膨張し、乗員の頭部を保護可能な頭部保護エアバッグに関する。   The present invention relates to a head protection airbag that can inflate inflation gas from the upper edge side of a vehicle window (side window) and deploy and inflate downward to protect a passenger's head.

従来、頭部保護エアバッグでは、車両への搭載時、窓の上縁側に折り畳まれて収納され、膨張用ガスの流入時に、窓の車内側を覆い可能に、窓の上縁側から下方に展開膨張する構成としていた（例えば、特許文献１参照）。また、この頭部保護エアバッグでは、上縁側に配置されて車体側に取り付けるための取付部と、車内側と車外側との両壁部の間に膨張用ガスを流入させて、窓を覆うように膨張するガス流入部と、を備えて構成されていた。   Conventionally, head protection airbags are folded and stored on the upper edge side of the window when mounted on a vehicle, and deployed downward from the upper edge side of the window so that the inside of the window can be covered when inflatable gas flows in. It was set as the structure which expands (for example, refer patent document 1). Further, in this head protection airbag, the inflation gas is allowed to flow between the mounting portion disposed on the upper edge side and attached to the vehicle body side, and both the wall portions on the vehicle inner side and the vehicle outer side to cover the window. The gas inflow part which expand | swells like this.

さらに、この頭部保護エアバッグでは、ガス流入部が、上部側に、膨張用ガスの上流側部位として、車内側・車外側壁部とを重ねた状態で上下方向に折り重ねる蛇腹折りによって形成した蛇腹折り部位、を配置させ、かつ、この蛇腹折り部位の下方で折り畳んで、蛇腹折りの折りの解消時に、蛇腹折りの折り重ね方向に沿って押し出される折り塊部位、を配置させて、窓の上縁側に収納されていた。   Further, in this head protection airbag, the gas inflow portion is formed by bellows fold that folds up and down in the state where the inner side and the outer side wall of the vehicle are overlapped as the upstream portion of the inflation gas on the upper side. And a fold lump portion that is folded along the bellows fold portion and is pushed along the folding direction of the bellows fold when the bellows fold fold is eliminated. It was stored on the upper edge side.

このようなエアバッグでは、蛇腹折りの折り畳みの精度が重要となることから、折目の位置に、目印を設けることが考えられる（例えば、特許文献２・３参照）。   In such an airbag, since the accuracy of folding the bellows is important, it is conceivable to provide a mark at the position of the fold (see, for example, Patent Documents 2 and 3).

しかし、頭部保護エアバッグでは、蛇腹折りの折目の配置位置も、重要となるが、蛇腹折りの折目の位置が適正でも、ねじれて車両に搭載されては、膨張用ガスの流入時、蛇腹折り部位の下方の折り塊部位が、所定方向に押し出されず、窓に沿って展開膨張させるような作用・効果を得られなくなってしまう。   However, in the head protection airbag, the position of the folds of the bellows fold is also important. The fold portion below the bellows fold portion is not pushed out in a predetermined direction, so that it is impossible to obtain the action and effect of expanding and expanding along the window.

そのため、ねじれ防止を確認できるような目印も必要となる（例えば、特許文献４参照）。
特開２００４−５８８４８号公報 特開２０００−３３８４２号公報 特開２００３−１９３３５０号公報 特開平１１−３２１５３２号公報 Therefore, a mark that can confirm the prevention of twisting is also required (for example, see Patent Document 4).
JP 2004-58848 A JP 2000-33842 A JP 2003-193350 A Japanese Patent Laid-Open No. 11-321532

しかし、従来のねじれ防止用の目印は、折り畳み完了時の折り崩れ防止用に巻くラッピング材に付けて、車両搭載時のエアバッグのねじれを防止するためのものであった。そのため、折り畳み完了時点で、蛇腹折り部位を含めて、ねじれの確認を行えるものではなかった。   However, the conventional marks for preventing torsion have been used to prevent twisting of the airbag when mounted on the vehicle by attaching it to a wrapping material that is wound for preventing the collapse when the folding is completed. Therefore, when the folding is completed, it is not possible to confirm the twist including the bellows folding portion.

本発明は、上述の課題を解決するものであり、折り畳み完了時の状態で、蛇腹折りの折目の配置位置や折幅、あるいは、ねじれ防止を容易に確認できて、簡単に、適正な姿勢で車両に搭載できる頭部保護エアバッグを提供することを目的とする。   The present invention solves the above-mentioned problems, and in the state when folding is completed, the arrangement position and width of the accordion fold or the prevention of torsion can be easily confirmed, and a proper posture can be easily obtained. An object of the present invention is to provide a head protection airbag that can be mounted on a vehicle.

本発明に係る頭部保護エアバッグは、車両への搭載時、窓の上縁側に折り畳まれて収納され、膨張用ガスの流入時に、窓の車内側を覆い可能に、窓の上縁側から下方に展開膨張する構成として、
上縁側に配置されて車体側に取り付けるための取付部と、車内側と車外側との両壁部の間に膨張用ガスを流入させて、窓を覆うように膨張するガス流入部と、を備えて構成される頭部保護エアバッグであって、
ガス流入部が、
上部側に、膨張用ガスの上流側部位として、前記車内側・車外側壁部とを重ねた状態で上下方向に折り重ねる蛇腹折りによって形成した蛇腹折り部位、を配置させ、かつ、
蛇腹折り部位の下方で折り畳まれて、蛇腹折りの折りの解消時に、蛇腹折りの折り重ね方向に沿って押し出される折り塊部位、を配置させて、
窓の上縁側に収納される構成として、
蛇腹折りにおける取付部側からの適正位置の第１番目の第１折目と第２番目の第２折目との位置に、それぞれ、第１・２折目に沿って配置される折目確認用の目印が、配設されるとともに、
取付部から第２折目との間の折り畳み完了時の露出するエリアに、第１・２折目に沿って配置される複数のねじれ防止確認用の目印が、配設されて構成されていることを特徴とする。 The head protection airbag according to the present invention is folded and stored on the upper edge side of the window when mounted on a vehicle, and can be covered from the upper edge side of the window so as to cover the inside of the window when inflating gas flows. As a configuration that expands and expands,
An attachment portion disposed on the upper edge side for attachment to the vehicle body side, and a gas inflow portion that inflates so as to cover the window by allowing an inflating gas to flow between both the inside and outside walls of the vehicle. A head protection airbag configured and comprising:
The gas inlet
On the upper side, an accordion fold portion formed by accordion folds folded in the vertical direction with the vehicle inner side / vehicle outer wall portion being overlapped as an upstream side portion of the inflation gas, and
Folded below the bellows fold part, when the fold of bellows fold is resolved, the fold part pushed out along the folding direction of the bellows fold is arranged,
As a configuration stored on the upper edge side of the window,
Confirmation of the folds arranged along the first and second folds at the positions of the first and second folds at the appropriate positions from the attachment portion side in the bellows fold, respectively. And a mark for
A plurality of torsion prevention confirmation marks arranged along the first and second folds are arranged in the exposed area when the folding between the mounting portion and the second fold is completed. It is characterized by that.

本発明に係る頭部保護エアバッグでは、折り畳み完了時、折目確認用の目印が、蛇腹折り部位の第１・２折目の位置に配置されていれば、折り畳み完了体を、斜め上方側等における車内側の方向からと車外側の方向からとの２方向から目視するだけで、蛇腹折りの折幅が、的確であって、適正に蛇腹折りされていることが確認できる。また、蛇腹折りの確認のために、折り畳み完了体を斜め上方側等における車内側の方向からと車外側の方向からとの２方向から目視した際、同時に、ねじれ防止確認用の目印が、第１折目や第２折目に沿って、すなわち、適正な折幅と折目位置とで蛇腹折りされた蛇腹折り部位の第１折目や第２折目に沿って、配置されていることが確認できれば、取付部に対して、ねじれずに、エアバッグが折り畳まれたことを確認できる。その結果、折り畳み完了体を斜め上方側等における車内側の方向からと車外側の方向からとの２方向から目視するだけで、エアバッグが、的確に蛇腹折りされ、かつ、ねじれずに適正に折り畳まれたことを、容易に確認できる。   In the head protection airbag according to the present invention, when the folding confirmation mark is disposed at the first and second folding positions of the bellows folding part when folding is completed, It is possible to confirm that the folding width of the bellows fold is accurate and appropriately folded by simply looking from the two directions, i.e., from the inside of the vehicle and from the outside of the vehicle. Further, when confirming the folding of the bellows from the two directions of the inner side and the outer side of the vehicle on the diagonally upper side or the like, at the same time, a mark for confirming torsion is displayed. Arranged along the first fold or the second fold, that is, along the first fold or the second fold of the bellows fold portion that is accordion-folded at an appropriate folding width and fold position. If it can confirm, it can confirm that the airbag was folded without twisting with respect to the attaching part. As a result, the airbag can be accurately folded without being twisted and properly twisted just by visually observing the folded body from two directions, ie, from the inside of the vehicle on the diagonally upper side, etc. It can be easily confirmed that it has been folded.

そのため、適正な折り畳みを確認した状態で、頭部保護エアバッグを車両に搭載させれば、簡単に、適正な姿勢で、頭部保護エアバッグを車両に搭載することができて、その後に、膨張用ガスが流入されれば、蛇腹折り部位の折りの解消時、蛇腹折り部位の下方の折り塊部位が、蛇腹折り部位の折り重ね方向に沿って押し出され、そして、展開膨張することとなり、例えば、乗員頭部と窓との間が狭くとも、窓に沿わせて、円滑に、頭部保護エアバッグを展開膨張させることができることとなる。   Therefore, if the head protection airbag is mounted on the vehicle with the proper folding confirmed, the head protection airbag can be easily mounted on the vehicle in the proper posture. If the expansion gas is flown, when the folding of the bellows folding part is canceled, the fold part below the bellows folding part is pushed out along the folding direction of the bellows folding part, and then expands and expands. For example, even if the space between the passenger's head and the window is narrow, the head protection airbag can be smoothly inflated along the window.

したがって、本発明に係る頭部保護エアバッグでは、折り畳み完了時の状態で、蛇腹折りの折目の配置位置や折幅、あるいは、ねじれ防止を容易に確認できて、簡単に、適正な姿勢で車両に搭載することができる。なお、折目確認用やねじれ防止確認用の目印は、車両搭載時のエアバッグの姿勢の確認にも、利用することができる。   Therefore, in the head protection airbag according to the present invention, the folding position of the accordion fold, the folding width, or the prevention of twisting can be easily confirmed in the state when the folding is completed, and the head protection airbag can be easily and properly positioned. Can be mounted on a vehicle. In addition, the mark for fold confirmation and the confirmation of twist prevention can be used also for confirmation of the attitude | position of the airbag at the time of vehicle mounting.

そして、取付部と蛇腹折り部位との境界部位が、蛇腹折り部位の上面側における車内外方向の略中央位置に配置されるように、エアバッグが折り畳まれる場合には、ねじれ防止確認用の目印は、取付部と第１折目との間、及び、第１折目と第２折目との間における折り畳み完了時に露出するエリアの取付部と第２折目との間、との少なくともに２箇所に、配設されていれば、折り畳み完了時の車外側と車内側との両側から、即座に、目視して、ねじれ防止を確認できることから、迅速にねじれの有無を確認できる。   When the airbag is folded so that the boundary portion between the attachment portion and the bellows folding portion is disposed at a substantially central position in the in-vehicle direction on the upper surface side of the bellows folding portion, a mark for checking twist prevention Is at least between the attachment portion and the first fold, and between the attachment portion and the second fold of the area exposed when the folding is completed between the first fold and the second fold. If it is arranged in two places, it is possible to immediately confirm the presence of twisting by visually observing both sides of the vehicle outer side and the vehicle inner side when the folding is completed.

ちなみに、折目確認用の目印が、蛇腹折りの第１・２折目に、それぞれ、配置されている状態で、折り畳み完了体がねじれていれば、それらの第１・２折目の目印も、ねじれることから、ねじれを確認できる。しかし、上記のように、折り畳み完了体の車内側と車外側との両側から、ねじれ防止を確認できる目印があれば、それらの目印が、取付部からの距離が大きくなったり小さくなることによって、折目確認用の目印と併せて、即座に判別できることとなる。特に、エアバッグの折り畳み完了状態において、取付部と蛇腹折り部位との境界部位が、折り畳み完了体の車内外方向の略中央位置、すなわち、蛇腹折りの折幅の中間位置付近に配置されている場合には、折目確認用やねじれ防止確認用の目印が無いと、蛇腹折りが的確な折幅で折り畳まれているか否かは、蛇腹折りで折り重ねた方向から見て、確認する必要が生じ、その際、取付部が邪魔となって確認し難く、かつ、ねじれ防止の確認も、車内側や車外側からの２方向から注意して見る必要が生じ、結局、折り重ね方向、車内側の方向、及び、車外側の方向からの３方向から、注意して目視する必要が生ずる。しかし、上記のような構成では、折り畳み完了体を斜め上方側等における車内側の方向からと車外側の方向からとの２方向から目視するだけで、エアバッグが適正に折り畳まれたことを、容易に確認することができる。   By the way, if the folding confirmation body is twisted in the state where the fold confirmation mark is placed in the first and second folds of the bellows, respectively, the first and second fold marks are also The twist can be confirmed from the twist. However, as described above, if there are marks that can be confirmed to prevent torsion from both the inner side and the outer side of the folded body, those marks increase or decrease the distance from the mounting portion. Together with the fold confirmation mark, it can be immediately identified. In particular, when the airbag is completely folded, the boundary portion between the attachment portion and the bellows folding portion is disposed at a substantially central position in the vehicle interior / exterior direction of the folding complete body, that is, near the middle position of the folding width of the bellows folding. In this case, it is necessary to check whether the bellows fold is folded with the correct folding width or not by looking from the direction of folding with the bellows fold if there is no mark for crease confirmation or twist prevention confirmation. In that case, it is difficult to check because the mounting part is in the way, and it is also necessary to check the twist prevention carefully from two directions from the inside and the outside of the car. And three directions from the direction of the outside of the vehicle need to be carefully observed. However, in the configuration as described above, the airbag is properly folded only by visually observing the folding completion body from two directions of the vehicle inner side and the vehicle outer direction on the diagonally upper side, etc. It can be easily confirmed.

また、エアバッグが袋織りによって形成されている場合には、折目確認用とねじれ防止確認用との目印を、袋織りの経糸若しくは緯糸から形成するとともに、他の一般部から色を異ならせ、かつ、相互にも、色を異ならせて、配設させれば、別途、目印を印刷する等の作業を行わなくとも、エアバッグの製造時に、同時に目印を形成でき、容易に目印をエアバッグに付けることができる。   In addition, when the airbag is formed by bag weaving, marks for confirmation of crease and for confirmation of twist prevention are formed from bag weft warp or weft and different colors from other general parts. In addition, if they are arranged in different colors, the marks can be formed at the same time as the manufacture of the airbag without the need to print the marks separately. Can be attached to the bag.

以下、本発明の一実施形態を図面に基づいて説明すると、図１・２に示すように、実施形態の頭部保護エアバッグ１９は、車両Ｖに搭載される頭部保護エアバッグ装置Ｍに使用されるものである。この頭部保護エアバッグ装置Ｍは、エアバッグ１９と、インフレーター１２と、取付ブラケット１０・１３と、エアバッグカバー８と、を備えて構成されている。そして、エアバッグ１９は、車両Ｖの車内側におけるサイドウインドＷ１・Ｗ２の上縁側において、フロントピラー部ＦＰの下縁側から、ルーフサイドレール部ＲＲの下縁側を経て、リヤピラー部ＲＰの上方側までの範囲に、折り畳まれて収納されている。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the head protection airbag 19 of the embodiment is applied to a head protection airbag device M mounted on a vehicle V. It is what is used. The head protection airbag device M includes an airbag 19, an inflator 12, mounting brackets 10 and 13, and an airbag cover 8. The airbag 19 extends from the lower edge side of the front pillar portion FP to the upper side of the rear pillar portion RP from the lower edge side of the front pillar portion FP on the upper edge side of the side windows W1 and W2 inside the vehicle V. It is folded and stored in the range.

インフレーター１２は、図１・２に示すように、略円柱状のシリンダタイプとして、エアバッグ１９における膨張用ガスを流入させるための接続口部２２が、外装され、クランプ１５を利用して、エアバッグ１９と連結されている。そして、インフレーター１２は、取付ブラケット１３を利用して、センターピラー部ＣＰの上方付近におけるルーフサイドレール部ＲＲのインナパネル２に、ルーフヘッドライニング５の下縁５ａに覆われて、取付固定されている。なお、インナパネル２は、車両Ｖのボディ（車体）１側の部材である。また、取付ブラケット１３は、板金製として、インフレーター１２を保持し、取付ボルト１４を利用して、インナパネル２に固定されている。   As shown in FIGS. 1 and 2, the inflator 12 is a substantially cylindrical cylinder type, and has a connection port portion 22 for allowing the inflation gas in the airbag 19 to flow in. The bag 19 is connected. The inflator 12 is attached and fixed to the inner panel 2 of the roof side rail portion RR near the upper portion of the center pillar portion CP by being covered with the lower edge 5a of the roof head lining 5 using the mounting bracket 13. Yes. The inner panel 2 is a member on the body (vehicle body) 1 side of the vehicle V. The mounting bracket 13 is made of sheet metal, holds the inflator 12, and is fixed to the inner panel 2 using the mounting bolts 14.

各取付ブラケット１０は、二枚の板金製のプレートから構成され（図８・１１参照）、エアバッグ１９の取付部４０における各取付片部４０ａを挟むように、各取付片部４０ａに取り付けられ、取付ボルト１１によって、各取付片部４０ａをインナパネル２に取付固定している。なお、各取付ボルト１１は、ナット２ｂを設けてインナパネル２に形成された取付孔２ａに、締結されている。   Each mounting bracket 10 is composed of two sheet metal plates (see FIGS. 8 and 11), and is attached to each mounting piece 40a so as to sandwich each mounting piece 40a in the mounting part 40 of the airbag 19. Each mounting piece 40a is fixedly attached to the inner panel 2 by the mounting bolt 11. Each mounting bolt 11 is fastened to a mounting hole 2a formed in the inner panel 2 by providing a nut 2b.

エアバッグカバー８は、フロントピラー部ＦＰに配置されるピラーガーニッシュ４とルーフサイドレール部ＲＲに配置されるルーフヘッドライニング５とのそれぞれの下縁４ａ・５ａ側から構成されている。なお、フロントピラーガーニッシュ４とルーフヘッドライニング５とは、合成樹脂製とし、フロントピラー部ＦＰとルーフサイドレール部ＲＲとにおいて、それぞれ、ボディ１のインナパネル２における車内側に、取付固定されている。また、ルーフヘッドライニング５は、フロントピラー部ＦＰの上方付近から、センターピラー部ＣＰの上方を経て、リヤピラー部ＲＰの上方付近まで、配設されている。   The airbag cover 8 is configured from the lower edges 4a and 5a of the pillar garnish 4 disposed in the front pillar portion FP and the roof head lining 5 disposed in the roof side rail portion RR. The front pillar garnish 4 and the roof head lining 5 are made of synthetic resin, and are fixedly attached to the inner side of the inner panel 2 of the body 1 at the front pillar portion FP and the roof side rail portion RR, respectively. . Further, the roof head lining 5 is disposed from the vicinity above the front pillar portion FP to the vicinity above the rear pillar portion RP via the center pillar portion CP.

エアバッグ１９は、図１〜５に示すように、ポリアミド糸等を使用した袋織りにより製造されたエアバッグ本体２０と、ポリアミド糸等の織布からなる可撓性を有したベルト５３と、から構成されている。なお、実施形態のエアバッグ本体２０には、通常設けられているシリコンゴム等のガス漏れ防止用のコーティング層が外表面に設けられていないが、適宜、ガス漏れ防止用のコーティング層を設けてもよい。また、ベルト５３は、実施形態の場合、エアバッグ本体２０を袋織りで形成して所定形状に裁断する際の残材から、形成されている。   As shown in FIGS. 1 to 5, the airbag 19 includes an airbag main body 20 manufactured by bag weaving using polyamide yarn or the like, a flexible belt 53 made of a woven fabric such as polyamide yarn, and the like. It is composed of Note that the airbag body 20 of the embodiment is not provided with a coating layer for preventing gas leakage such as silicon rubber, which is normally provided, but a coating layer for preventing gas leakage is appropriately provided. Also good. Further, in the case of the embodiment, the belt 53 is formed from a remaining material when the airbag body 20 is formed by bag weaving and cut into a predetermined shape.

エアバッグ本体２０は、インフレーター１２からの膨張用ガスＧを流入させて、折り畳み状態から展開して、サイドウインドＷ１・Ｗ２やセンターピラー部ＣＰ・リヤピラー部ＲＰのピラーガーニッシュ７・６の車内側を覆うように、展開膨張する。そして、エアバッグ本体２０は、膨張用ガスＧを流入させて車内側壁部２１ａと車外側壁部２１ｂとを離すように膨らむガス流入部２１と、膨張用ガスＧを流入させない非流入部３８と、を備えて構成されている。   The airbag main body 20 flows in the inflation gas G from the inflator 12 and expands from the folded state, and the inside of the side windows W1 and W2 and the pillar garnishes 7 and 6 of the center pillar part CP and the rear pillar part RP are inside the vehicle. Expand and expand to cover. The airbag main body 20 includes a gas inflow portion 21 that inflates the inflating gas G so as to separate the inboard side wall portion 21a and the outboard side wall portion 21b, and a non-inflow portion 38 that does not allow the inflating gas G to flow in. , And is configured.

非流入部３８は、ガス流入部２１の壁部２１ａ・２１ｂ相互を結合させたように形成され、周縁部３９、取付部４０、区画部４１・４２、及び、板状部４３、から構成されている。周縁部３９は、エアバッグ本体２０の外周縁の部位に配置されて、ガス流入部２１の周囲を囲むように、形成されている。   The non-inflow portion 38 is formed so that the wall portions 21 a and 21 b of the gas inflow portion 21 are coupled to each other, and includes a peripheral edge portion 39, an attachment portion 40, partition portions 41 and 42, and a plate-like portion 43. ing. The peripheral edge portion 39 is disposed at the outer peripheral edge portion of the airbag body 20 and is formed so as to surround the periphery of the gas inflow portion 21.

取付部４０は、エアバッグ本体２０の上縁２０ａ側における周縁部３９の上部側から構成され、所定位置には、取付孔４０ｂを備えた複数（実施形態では７個）の取付片部４０ａを上方へ突出させている。各取付片部４０ａには、インナパネル２に取り付けるための取付ブラケット１０が固着されることとなり、各取付孔４０ｂには、取付ボルト１１が挿通されることとなる（図８・１１参照）。   The attachment portion 40 is configured from the upper side of the peripheral edge portion 39 on the upper edge 20a side of the airbag body 20, and a plurality of (seven in the embodiment) attachment piece portions 40a having attachment holes 40b are provided at predetermined positions. It protrudes upward. A mounting bracket 10 for mounting to the inner panel 2 is fixed to each mounting piece 40a, and a mounting bolt 11 is inserted into each mounting hole 40b (see FIGS. 8 and 11).

板状部４３は、長方形板状として、前後の保護膨張部２５・２９の間におけるガス供給路部２３の下方に配設されている。この板状部４３は、エアバッグ本体２０の全体形状を確保するとともに、ガス流入部２１の容積を小さくして、膨張完了までの時間を短くするために、配設されている。   The plate-like portion 43 is arranged in a rectangular plate shape below the gas supply path portion 23 between the front and rear protective expansion portions 25 and 29. The plate-like portion 43 is disposed in order to secure the overall shape of the airbag main body 20 and reduce the volume of the gas inflow portion 21 to shorten the time until completion of inflation.

区画部４１・４２は、前後の保護膨張部２５・２９の領域内に、それぞれ、配置されて、区画部４１が、車内側から見て、逆Ｊ字形に形成されて、各保護膨張部２５・２９の前部側に配設されている。区画部４２は、車内側から見て、逆Ｕ字形に形成されて、前側の保護膨張部２５の後部側に配設されている。これらの区画部４１・４２は、前後の各保護膨張部２５・２９の膨張完了時に、前後に並設されるセル２６・２７・３０・３１を形成して、各保護膨張部２５・２９が、球状でなく、略板状に膨張できるように、各保護膨張部２５・２９の厚さを規制するために配設されている。   The partition parts 41 and 42 are respectively arranged in the regions of the front and rear protective inflating parts 25 and 29, and the partition part 41 is formed in an inverted J shape when viewed from the inside of the vehicle. -It is arranged on the front side of 29. The partition portion 42 is formed in an inverted U shape when viewed from the inside of the vehicle, and is disposed on the rear side of the protective expansion portion 25 on the front side. These partition portions 41 and 42 form cells 26, 27, 30, and 31 that are arranged in parallel at the front and rear when the expansion of the front and rear protective expansion portions 25 and 29 is completed. The protective inflatable portions 25 and 29 are disposed to regulate the thickness of the protective inflating portions 25 and 29 so that the protective inflating portions 25 and 29 can be expanded in a substantially plate shape instead of a spherical shape.

なお、前保護膨張部２５では、膨張完了時、図３のＣ・図５のＣに示すように、区画部４１・４２によって、前方側から、補助セル２７Ａ・本体セル２６・補助セル２７Ｂ・２７Ｃとした四つのセルが配設されることとなり、後保護膨張部２９では、膨張完了時、図４のＣに示すように、区画部４１によって、前方側から、補助セル３１・本体セル３０とした二つのセルが配設されることとなる。   In addition, in the front protective inflating portion 25, when the inflating is completed, as shown in FIG. 3C and FIG. 5C, the auxiliary cells 27A, the main body cells 26, the auxiliary cells 27B,. In the rear protective inflating portion 29, when the expansion is completed, the auxiliary cell 31 and the main body cell 30 are formed from the front side by the partition portion 41 as shown in FIG. The two cells are arranged.

そして、区画部４１・４２で区画された各セル２６・２７・３０・３１は、膨張時に、エアバッグ本体２０の前後方向の長さを短くして、膨張完了時のエアバッグ本体２０の下縁２０ｂ側に、前後方向のテンションを生じさせることとなる。   The cells 26, 27, 30 and 31 partitioned by the partition portions 41 and 42 are shortened in the front-rear direction of the airbag body 20 when inflated, so that the bottom of the airbag body 20 when the inflation is completed. A tension in the front-rear direction is generated on the edge 20b side.

ガス流入部２１は、実施形態の場合、接続口部２２、ガス供給路部２３、及び、保護膨張部２５・２９、から構成されている。ガス供給路部２３は、エアバッグ本体２０の上縁２０ａ側で車両Ｖの前後方向に沿って、直線状に配設されている。ガス供給路部２３の前後方向の略中間部位には、上方へ延びて、インフレーター１２からの膨張用ガスＧをガス流入部２１内に流入させるための接続口部２２が、形成されている。ガス供給路部２３は、接続口部２２からの膨張用ガスＧを、車両Ｖの前後方向両側、すなわち、前方側では、補助セル２７Ａの上方まで、後方側では、本体セル３０の上方まで、流すとともに、エアバッグ本体２０において、最初に膨張する上流側部位を構成することとなる。なお、ガス供給路部（上流側部位）２３は、車両搭載状態で膨張を完了させた際、上部側の一部が、エアバッグカバー８に覆われるとともに、下部２３ｂ側が、乗員頭部Ｈの上部付近の側方まで、配置されるように、構成されている（図１０・１３参照）。   In the embodiment, the gas inflow portion 21 includes a connection port portion 22, a gas supply path portion 23, and protective expansion portions 25 and 29. The gas supply path portion 23 is linearly arranged along the front-rear direction of the vehicle V on the upper edge 20a side of the airbag body 20. A connection port portion 22 that extends upward and allows the inflation gas G from the inflator 12 to flow into the gas inflow portion 21 is formed at a substantially intermediate portion in the front-rear direction of the gas supply passage portion 23. The gas supply path portion 23 supplies the expansion gas G from the connection port portion 22 to both sides in the front-rear direction of the vehicle V, that is, to the upper side of the auxiliary cell 27A on the front side and to the upper side of the main body cell 30 on the rear side. In addition to flowing, the airbag body 20 constitutes an upstream portion that is first inflated. The gas supply passage portion (upstream side portion) 23 is partially covered by the airbag cover 8 when the inflation is completed in a vehicle-mounted state, and the lower portion 23b side is the passenger head H side. It is configured to be arranged up to the side near the top (see FIGS. 10 and 13).

保護膨張部２５・２９は、ガス供給路部２３の下部２３ｂ側とともに、車両Ｖのシートに着座した乗員の頭部を保護するエリアであり、前保護膨張部２５は、ガス供給路部２３の前部側の下方に配置され、エアバッグ本体２０の展開膨張時、車両Ｖの前席の側方に配置されて、前席側方のサイドウインドＷ１を覆うように膨張することとなる。後保護膨張部２９は、ガス供給路部２３の後部側の下方に配置され、エアバッグ本体２０の展開膨張時、車両Ｖの後席の側方に配置されて、後席側方のサイドウインドＷ２を覆うこととなる。そして、各保護膨張部２５・２９は、膨張完了時、既述したように、厚さを規制する区画部４１・４２によって区画されて、車両Ｖの前後方向に並設される複数のセル２６・２７（２７Ａ・２７Ｂ・２７Ｃ）・３０・３１を膨張させるように、構成されている。   The protective inflating portions 25 and 29 are areas for protecting the heads of passengers seated on the seat of the vehicle V together with the lower portion 23 b side of the gas supplying passage portion 23. When the airbag main body 20 is deployed and inflated, it is disposed on the side of the front seat of the vehicle V and inflates so as to cover the side window W1 on the side of the front seat. The rear protective inflating portion 29 is disposed below the rear side of the gas supply passage portion 23, and is disposed on the side of the rear seat of the vehicle V when the airbag body 20 is deployed and inflated. W2 will be covered. Each of the protective inflating portions 25 and 29 is partitioned by the partitioning portions 41 and 42 that regulate the thickness, as described above, when the expansion is completed, and the plurality of cells 26 that are arranged in parallel in the front-rear direction of the vehicle V. 27 (27A / 27B / 27C) / 30/31 is configured to be inflated.

そして、各保護膨張部２５・２９の本体セル２６・３０では、車内側・車外側壁部２１ａ・２１ｂ相互を結合して、膨張完了時の各保護膨張部２５・２６の内圧上昇時に車内側・車外側壁部２１ａ・２１ｂ相互を分離させる仮結合部３３・３４が配設されて、仮結合部３３・３４の分離前には、薄く膨張し（図３のＢ・図４のＢ参照）、かつ、仮結合部３３・３４の分離時には、図３のＣや図４のＣに示すように、厚く膨張するように構成されている。実施形態の場合、これらの仮結合部３３・３４は、車内側・車外側壁部２１ａ・２１ｂ相互を縫合して結合する破断可能な縫合糸３６により、形成されている。なお、これらの仮結合部３３・３４は、縫合糸３６を使用する他、エアバッグ本体２０の袋織り時の経糸若しくは緯糸を使用して、破断可能に、壁部２１ａ・２１ｂ相互を結合させた接結点を設け、これらの接結点によって、仮結合部３３・３４を形成してもよい。   In the main body cells 26 and 30 of the respective protective expansion portions 25 and 29, the vehicle inner side and vehicle outer side wall portions 21a and 21b are coupled to each other, and when the internal pressure of each of the protective expansion portions 25 and 26 increases upon completion of the expansion, -Temporary coupling portions 33 and 34 for separating the vehicle outer side wall portions 21a and 21b from each other are disposed, and are thinly expanded before separation of the temporary coupling portions 33 and 34 (see B in FIG. 3 and B in FIG. 4). In addition, when the temporary coupling portions 33 and 34 are separated, as shown in FIG. 3C and FIG. In the case of the embodiment, these temporary joint portions 33 and 34 are formed by a breakable suture thread 36 that stitches the vehicle inner side / vehicle outer side wall portions 21a and 21b together. In addition to using the suture thread 36, these temporary joint portions 33 and 34 use the warp yarn or weft yarn of the airbag body 20 when weaving the bag to join the wall portions 21a and 21b so that they can be broken. Alternatively, provisional connection portions 33 and 34 may be formed by providing these connection points.

さらに、仮結合部３３は、上端３３ａ側に配設される横線部３３ｃと、横線部３３ｃから下方に延びる二本の縦線部３３ｄ・３３ｄと、から構成され、横線部３３ｃは、区画部４１・４２の上端相互を連結して、ガス供給路部２３と保護膨張部２５とを区画するように、ガス供給路部２３の下縁側に配設されている。各縦線部３３ｄは、仮結合部３３の下端３３ｂ側に、セル２６の膨張時に応力集中が生じやすいように、区画部４１・４２の下端４１ａ・４２ａ付近まで、上下方向に沿う直線状に延ばして、周縁部３９に連結させないように、保護膨張部２５の領域途中で止めている。これら二本の縦線部３３ｄは、区画部４１・４２間を三等分するように、相互に離れて配設されている。   Further, the temporary coupling portion 33 is composed of a horizontal line portion 33c disposed on the upper end 33a side, and two vertical line portions 33d and 33d extending downward from the horizontal line portion 33c. The horizontal line portion 33c is a partition portion. The upper ends of 41 and 42 are connected to each other and are arranged on the lower edge side of the gas supply path portion 23 so as to partition the gas supply path portion 23 and the protective expansion portion 25. Each vertical line portion 33d is linearly formed along the vertical direction to the vicinity of the lower ends 41a and 42a of the partition portions 41 and 42 so that stress concentration is likely to occur on the lower end 33b side of the temporary coupling portion 33 when the cell 26 expands. It is stopped in the middle of the region of the protective expansion part 25 so as not to be extended and connected to the peripheral edge part 39. These two vertical line portions 33d are arranged away from each other so as to divide the partition portions 41 and 42 into three equal parts.

また、仮結合部３４は、略横向きＦ字状に屈曲するように配設されて、上端３４ａ側を、区画部４１の上端に連結させるように、前後方向に沿う横線部３４ｃとし、下端３４ｂ側を、セル３０の膨張時に応力集中が生じやすいように、上下方向に沿う二本の縦線部３４ｄとして、それぞれ、区画部４１の下端４１ａ付近まで、上下方向に沿う直線状に延ばして、周縁部３９に連結させないように、保護膨張部２９の領域途中で止めている。これらの縦線部３４ｄは、セル３０を前後方向に三等分するように、相互に離れて配設されている。   Further, the temporary coupling portion 34 is disposed so as to be bent in a substantially lateral F-shape, and the upper end 34a side is a horizontal line portion 34c along the front-rear direction so as to be connected to the upper end of the partition portion 41, and the lower end 34b. The two sides are extended in a straight line along the vertical direction to the vicinity of the lower end 41a of the partition part 41 as two vertical line parts 34d along the vertical direction so that stress concentration is likely to occur when the cell 30 expands. In order not to be connected to the peripheral edge portion 39, the protective expansion portion 29 is stopped in the middle of the region. These vertical line portions 34d are arranged away from each other so as to divide the cell 30 into three equal parts in the front-rear direction.

なお、縫合糸３６の破断強度は、本体セル２６・３０の膨張時、直ちに破断される強度ではなく、図３・４に示すように、各セル２６・３０が展開を完了させた後における厚さの薄い状態の小セル２６ａ・３０ａが内圧を上昇させた際に、破断するように、設定されている。小セル２６ａ・３０ａは、各本体セル２６・３０において、仮結合部３３・３４の縦線部３３ｄ・３４ｄで前後に分割された部位である。   It should be noted that the breaking strength of the suture thread 36 is not the strength that immediately breaks when the main body cells 26 and 30 are expanded, but the thickness after the cells 26 and 30 are completely deployed, as shown in FIGS. The thin small cells 26a and 30a are set to break when the internal pressure is increased. The small cells 26a and 30a are portions divided forward and backward by the vertical line portions 33d and 34d of the temporary coupling portions 33 and 34 in the main body cells 26 and 30, respectively.

そして、仮結合部３３を設けた本体セル２６では、本体セル２６の上端が、区画部４１・４２の上端相互を連結するように、車内側・車外側壁部２１ａ・２１ｂ相互を連結する横線部３３ｃを配設させているため、図５に示すように、膨張時に、横線部３３ｃが壁部２１ａ・２１ｂ相互を分離させるまでは、膨張用ガスを区画部４１・４２の下端側から流入させることとなって、下部側の前後に、ガス流入口２６ｂ・２６ｃ（図２参照）を配設させる構成となる。   And in the main body cell 26 provided with the temporary coupling part 33, the horizontal line which connects vehicle inner side and vehicle outer wall part 21a * 21b mutually so that the upper end of the main body cell 26 may connect the upper ends of the partition parts 41 * 42 mutually. Since the portion 33c is disposed, as shown in FIG. 5, the expansion gas flows in from the lower end side of the partition portions 41 and 42 until the horizontal line portion 33c separates the walls 21a and 21b from each other at the time of expansion. As a result, gas inlets 26b and 26c (see FIG. 2) are arranged before and after the lower side.

一方、仮結合部３４を設けた本体セル３０では、本体セル３０の上端が、区画部４１の上端から連なって後方へ延びるように、車内側・車外側壁部２１ａ・２１ｂ相互を連結する横線部３４ｃを配設させて、横線部３４ｃの後端側を周縁部３９の後縁に結合させていないため、膨張時に、横線部３３ｃが壁部２１ａ・２１ｂ相互を分離させるまでは、周壁部３９の後縁側と横線部３３ｃの後端側との間、すなわち、本体セル３０の後端上部を、ガス流入口３０ｂ（図２参照）とすることとなる。   On the other hand, in the main body cell 30 provided with the temporary coupling portion 34, the horizontal line that connects the vehicle inner side / vehicle outer side wall portions 21 a and 21 b such that the upper end of the main body cell 30 extends rearward from the upper end of the partition portion 41. Since the portion 34c is disposed and the rear end side of the horizontal line portion 34c is not coupled to the rear edge of the peripheral edge portion 39, the peripheral wall portion until the horizontal line portion 33c separates the wall portions 21a and 21b at the time of expansion. Between the rear edge side of 39 and the rear end side of the horizontal line portion 33c, that is, the rear end upper part of the main body cell 30 is used as the gas inflow port 30b (see FIG. 2).

そして、実施形態のエアバッグ本体２０では、上縁２０ａ側に、前後方向に沿って、上下二段に配設される黒色の目印４５・４６と、上下四段に配設される赤色の目印４８・４９・５０・５１と、を配設させている。これらの目印４５・４６・４８・４９・５０・５１は、エアバッグ本体２０の袋織り時の経糸若しくは緯糸（実施形態の場合には、経糸）に、目印４５・４６・４８・４９・５０・５１の部位以外の一般部と相違し、さらに、相互に違う色を着色した糸を使用し、エアバッグ本体２０の袋織り時に、一体的に配設させている。なお、一般部の経糸や緯糸は、青色としている。また、実施形態の場合には、車内側・車外側壁部２１ａ・２１ｂの両側に目印４５・４６・４８・４９・５０・５１が表れるように、複数本の糸（経糸）によって、目印４５・４６・４８・４９・５０・５１が形成されている。   In the airbag body 20 of the embodiment, on the upper edge 20a side, along the front-rear direction, black marks 45 and 46 arranged in two upper and lower stages, and red marks arranged in four upper and lower stages. 48, 49, 50 and 51 are disposed. These marks 45, 46, 48, 49, 50, 51 are provided on the warps or wefts of the airbag body 20 when weaving the bag (in the case of the embodiment, warps), the marks 45, 46, 48, 49, 50. -Different from the general portion other than the portion 51, and further, yarns colored in different colors are used, and the airbag body 20 is integrally disposed when weaving the bag. The warp and weft of the general part are blue. In the case of the embodiment, the marks 45, 46, 48, 49, 50, 51 are formed by a plurality of yarns (warp threads) so that the marks 45, 46, 48, 49, 50, 51 appear on both sides of the vehicle inner side / outer side wall parts 21a, 21b. · 46 · 48 · 49 · 50 · 51 is formed.

さらに、黒色の目印４５・４６は、図２・７のＡに示すように、蛇腹折りの折目に配置されるもので、適正位置に配置された場合には、蛇腹折りの折目における上縁２０ａ側の取付部４０に最も近い第１折目Ｄ１に、折目確認用の折目４５が、配置され、その次の第２折目Ｄ２に、折目確認用の折目４６が、配置されるように、設定されている。   Further, as shown in A of FIGS. 2 and 7, the black marks 45 and 46 are arranged at the folds of the bellows fold. A fold confirmation fold 45 is arranged in the first fold D1 closest to the mounting portion 40 on the edge 20a side, and a fold confirmation fold 46 is placed in the second fold D2 after that. It is set to be placed.

また、赤色の目印４８・４９・５０・５１は、上縁２０ａ側から順に配設されて、エアバッグ２０の折り畳みを完了させた折り畳み完了体５８のねじれ防止を確認するためのものである。そして、実施形態の場合、ねじれ防止確認用の目印４８は、取付部４０側と蛇腹折り部位５５との境界部位Ｘに配置され、ねじれ防止確認用の目印４９・５０・５１は、折目確認用の目印４５・４６の間に、等ピッチ間隔で配置されている。実施形態の場合、図６・８・１１に示すように、エアバッグ１９の車両搭載時におけるボディ１側のインナパネル２等の収納形状に対応させて、取付部４０が、蛇腹折り部位５５における車内外方向の中央付近、すなわち、蛇腹折りの折幅Ｂの半分の位置付近、に配置されるように、設定されていることから、適正に折り畳みを完了した折り畳み完了体５８を、斜め上方の車内側の方向から見れば、折目確認用目印４５とねじれ防止確認用目印４８とが、容易に目視でき、斜め上方の車外側の方向から見れば、折目確認用目印４６とねじれ防止確認用目印４８・５０・５１とが、容易に目視できることとなる。   Further, the red marks 48, 49, 50, 51 are arranged in order from the upper edge 20a side, and are for confirming the prevention of twisting of the folding completion body 58 that has completed the folding of the airbag 20. In the case of the embodiment, the twist prevention confirmation mark 48 is arranged at the boundary part X between the attachment portion 40 side and the bellows folding part 55, and the twist prevention confirmation marks 49, 50, 51 are fold confirmation. They are arranged at equal pitch intervals between the marks 45 and 46 for use. In the case of the embodiment, as shown in FIGS. 6, 8, and 11, the attachment portion 40 is provided at the bellows folding portion 55 so as to correspond to the storage shape of the inner panel 2 on the body 1 side when the airbag 19 is mounted on the vehicle. Since it is set so as to be arranged near the center in the vehicle interior / exit direction, that is, near the half of the folding width B of the bellows folding, the folding completed body 58 that has been properly folded is The fold confirmation mark 45 and the torsion prevention confirmation mark 48 are easily visible when viewed from the inside of the vehicle, and the fold confirmation mark 46 and the twist prevention confirmation are viewed from the outside of the vehicle obliquely above. The use marks 48, 50 and 51 can be easily visually observed.

ベルト５３は、図２・１２に示すように、展開膨張途中にエアバッグ本体２０の下縁２０ｂ側を車外側方向に牽引可能に、上端５３ａをエアバッグ本体２０の上縁２０ａ側における車外側Ｏに結合させ、下端５３ｂをエアバッグ本体２０の下縁２０ｂ側における車外側Ｏに結合させて、配設されている。特に、実施形態のベルト５３は、図２に示すように、上端５３ａを、エアバッグ本体２０の前後方向の端部側である後端の取付片部４０ａＢに、結合させるとともに、上端５３ｂを、エアバッグ本体２０の下縁２０ｂにおける前後方向の中央付近に、結合させている。なお、ベルト５３は、実施形態の場合、縫合によって、エアバッグ本体２０に結合されており、また、その長さは、エアバッグ本体２０を平らに展開した際の各結合部位間の長さと、略等しくしている。   As shown in FIGS. 2 and 12, the belt 53 is capable of pulling the lower edge 20b of the airbag body 20 toward the vehicle outer side during deployment and inflating, and has an upper end 53a on the vehicle outer side on the upper edge 20a side of the airbag body 20. The lower end 53b is connected to the vehicle outer side O on the side of the lower edge 20b of the airbag body 20, and is arranged. In particular, as shown in FIG. 2, the belt 53 of the embodiment couples the upper end 53 a to the rear-end attachment piece 40 a B on the end side in the front-rear direction of the airbag body 20, and the upper end 53 b The airbag body 20 is coupled to the lower edge 20b of the airbag body 20 near the center in the front-rear direction. In the case of the embodiment, the belt 53 is coupled to the airbag main body 20 by stitching, and the length thereof is the length between the coupling portions when the airbag main body 20 is flattened. It is almost equal.

このエアバッグ１９を、車両Ｖに搭載するまでの工程を説明すると、まず、ベルト５３を結合させたエアバッグ本体２０を、車内側壁部２１ａと車外側壁部２１ｂとを重ねて平らに展開させ、順次、折目Ｄ１・Ｄ２（図６のＡ・Ｂ参照）を付けて、エアバッグ本体２０の上縁２０ａ側の上流側部位（ガス供給路部）２３を、ベルト５３を含めて、上下方向に重ねて折るように、蛇腹折りして、上縁２０ａ側に、蛇腹折り部位５５を形成する。   The process until the airbag 19 is mounted on the vehicle V will be described. First, the airbag body 20 to which the belt 53 is coupled is deployed flatly by overlapping the vehicle inner wall portion 21a and the vehicle outer wall portion 21b. Sequentially, folds D1 and D2 (see A and B in FIG. 6) are attached, and the upstream portion (gas supply passage) 23 on the upper edge 20a side of the airbag body 20 is vertically moved including the belt 53. The bellows fold portion 55 is formed on the upper edge 20a side by folding the bellows so as to be folded in the direction.

その後、図６のＣに示すように、エアバッグ本体２０における蛇腹折り部位５５の下方となるエアバッグ本体２０の下部側において、エアバッグ本体２０の下縁２０ｂを車外側Ｏに向けて巻くように、ベルト５３とともに、ロール折りして、折り塊部位５６を形成し、エアバッグ１９の折り畳み作業を完了させる。   Thereafter, as shown in FIG. 6C, the lower edge 20b of the airbag body 20 is wound toward the vehicle outer side O on the lower side of the airbag body 20 below the bellows-folded portion 55 of the airbag body 20. Then, the belt 53 and the belt 53 are folded together to form a fold portion 56, and the folding operation of the airbag 19 is completed.

そして、エアバッグ１９を折り畳んだ後には、折り崩れ防止用の破断可能な図示しないテープにより、エアバッグ１９の所定箇所をくるむとともに、インフレーター１２・取付ブラケット１０・１３を取り付けて、エアバッグ組付体を形成する。   After the airbag 19 is folded, a predetermined portion of the airbag 19 is wrapped with a breakable tape (not shown) for preventing collapse, and the inflator 12 and the mounting brackets 10 and 13 are attached, and the airbag is assembled. Form the body.

その後、各取付ブラケット１０・１３を、ボディ１側のインナパネル２の所定位置に配置させ、各取付孔４０ｂを挿通させる等して、ボルト１１・１４止めし、各取付ブラケット１０・１３をインナパネル２に固定して、エアバッグ組付体をボディ１に取り付ける。ついで、インフレーター１２に、所定のインフレーター作動用の制御装置から延びる図示しないリード線を結線し、フロントピラーガーニッシュ４やルーフヘッドライニング５をボディ１に取り付け、さらに、リヤピラーガーニッシュ６・センターピラーガーニッシュ７をボディ１に取り付ければ、エアバッグ装置Ｍを、車両Ｖに搭載することができる。   Thereafter, the mounting brackets 10 and 13 are arranged at predetermined positions on the inner panel 2 on the body 1 side, and the mounting holes 40b are inserted to fix the bolts 11 and 14, respectively. The airbag assembly is fixed to the panel 2 and attached to the body 1. Next, lead wires (not shown) extending from a predetermined control device for operating the inflator are connected to the inflator 12, the front pillar garnish 4 and the roof head lining 5 are attached to the body 1, and the rear pillar garnish 6 and the center pillar garnish 7 are further attached. If attached to the body 1, the airbag device M can be mounted on the vehicle V.

そして、エアバッグ装置Ｍの車両Ｖへの搭載後、インフレーター１２が作動されれば、インフレーター１２からの膨張用ガスＧが、図２の二点鎖線に示すように、エアバッグ本体２０における接続口部２２からガス供給路部（上流側部位）２３に流入し、前後方向両側に向かって、ガス供給路部２３を流れ、さらに、エアバッグ本体２０の前後の保護膨張部２５・２９に流入することから、各保護膨張部２５・２９が、折りを解消させつつ、膨張し始める。そして、エアバッグ本体２０は、くるんでおいた図示しないテープを破断させ、さらに、フロントピラーガーニッシュ４やルーフヘッドライニング５の下縁４ａ・５ａ側のエアバッグカバー８を押し開いて、下方へ突出しつつ、図１の二点鎖線に示すように、サイドウインドＷ１・Ｗ２・センターピラー部ＣＰ・リヤピラー部ＲＰの車内側Ｉを覆うように、大きく展開膨張することとなる。   When the inflator 12 is activated after the airbag device M is mounted on the vehicle V, the inflation gas G from the inflator 12 is connected to the connection port in the airbag main body 20 as shown by a two-dot chain line in FIG. The gas flows into the gas supply path (upstream part) 23 from the portion 22, flows in the gas supply path 23 toward both sides in the front-rear direction, and further flows into the protective inflation portions 25 and 29 before and after the airbag body 20. Therefore, each of the protective inflating portions 25 and 29 starts to expand while eliminating the folding. The airbag body 20 breaks the wrapped tape (not shown), pushes the airbag cover 8 on the lower edges 4a and 5a side of the front pillar garnish 4 and the roof head lining 5, and projects downward. On the other hand, as shown by a two-dot chain line in FIG. 1, the side window W1, W2, the center pillar portion CP, and the rear pillar portion RP are greatly expanded and inflated so as to cover the inside I of the vehicle.

この時、実施形態の頭部保護エアバッグ１９では、まず、エアバッグ本体２０の上流側部位（ガス供給路部）２３が膨張する際、図８・９のＡ・Ｂや図１１・１２のＡに示すように、エアバッグ本体２０の上縁２０ａ側における上流側部位２３が、膨張用ガスＧの流入に伴う膨張時に保護膨張部２５・２９側を下方へ押し出し可能に、車内側・車外側壁部２１ａ・２１ｂを折り重ねるように折目Ｄ１・Ｄ２を付けて折り畳んだ蛇腹折りの蛇腹折り部位５５、としており、その蛇腹折り部位５５は、膨張用ガスＧを流入させれば、直ちに、蛇腹折り部位５５の下方側の折り塊部位５６を、蛇腹折りの折り重ね方向である下方側へ、押し出す。また、この時、エアバッグ本体２０の車外側Ｏには、エアバッグ本体２０の上縁２０ａ側と下縁２０ｂ側とを連結するベルト５３が配設されており、図１２のＡに示すように、エアバッグ本体２０の下縁２０ｂ側は、ベルト５３に規制されて、車外側Ｏに向いて展開する。その結果、折り塊部位５６を含めたエアバッグ本体２０の下部側が、サイドウインドＷ１・Ｗ２に沿うように迅速に押し出されて、乗員Ｃの頭部ＨがサイドウインドＷ１・Ｗ２に接近していても、エアバッグ本体２０の下縁２０ｂ側が、サイドウインドＷ１・Ｗ２と乗員頭部Ｈの上端ＨＴ側との間の狭い三角スペースＴＳに、上方から割り込むように、侵入する。特に、エアバッグ１９の下部側は、折り塊部位５６であって、蛇腹折り部位５５より折りを解消し難いことから、車内外方向の厚さを薄くしたコンパクトな状態を維持して、サイドウインドＷ１・Ｗ２と乗員頭部Ｈとの狭い隙間ＴＳに侵入し易い。   At this time, in the head protection airbag 19 according to the embodiment, first, when the upstream portion (gas supply path portion) 23 of the airbag body 20 is inflated, the sections A and B in FIGS. 8 and 9 and FIGS. As shown in A, the upstream side portion 23 on the upper edge 20a side of the airbag body 20 can push the protective inflation portions 25 and 29 downward when inflating due to the inflow of the inflation gas G. The bellows fold portion 55 is folded into a bellows fold with the folds D1 and D2 so that the outer side wall portions 21a and 21b are folded, and the bellows fold portion 55 immediately after the inflation gas G is introduced. Then, the fold lump portion 56 on the lower side of the bellows fold portion 55 is pushed out to the lower side which is the folding direction of the bellows fold. Further, at this time, a belt 53 for connecting the upper edge 20a side and the lower edge 20b side of the airbag body 20 is disposed on the outer side O of the airbag body 20, as shown in FIG. In addition, the lower edge 20b side of the airbag body 20 is regulated by the belt 53 and deployed toward the vehicle outer side O. As a result, the lower portion of the airbag body 20 including the folded mass portion 56 is quickly pushed out along the side windows W1 and W2, and the head H of the occupant C approaches the side windows W1 and W2. In addition, the lower edge 20b side of the airbag body 20 enters the narrow triangular space TS between the side windows W1 and W2 and the upper end HT side of the occupant head H so as to interrupt from above. In particular, the lower side of the airbag 19 is a fold portion 56, and it is difficult to eliminate folding from the bellows fold portion 55. Therefore, the side window is maintained in a compact state in which the thickness in the vehicle interior and exterior direction is reduced. It is easy to enter a narrow gap TS between W1 and W2 and the occupant head H.

この状態で、図９のＢ・Ｃや図１２のＡ・Ｂに示すように、さらに上流側部位２３が膨張すれば、上流側部位２３自体が、乗員頭部Ｈの上端ＨＴ側における車外側部位ＴＯを、車内側Ｉとなる車両Ｖの左右方向の中央側に押すような態様となって、サイドウインドＷ１・Ｗ２と乗員頭部Ｈの上端ＨＴ側との間の三角スペースＴＳを広げることとなり、上流側部位２３に押し出されるエアバッグ本体２０の下縁２０ｂ側は、サイドウインドＷ１・Ｗ２と乗員頭部Ｈの上端ＨＴ側との間の広げられたスペースＴＳにおいて、下方側へ割り込む。   In this state, as shown in FIG. 9B and FIG. 12A and FIG. 12A and FIG. 12, if the upstream side portion 23 is further expanded, the upstream side portion 23 itself is outside the vehicle on the upper end HT side of the passenger head H. The portion TO is pushed toward the center in the left-right direction of the vehicle V, which is the vehicle interior side I, and the triangular space TS between the side windows W1, W2 and the upper end HT side of the passenger head H is widened. Thus, the lower edge 20b side of the airbag body 20 pushed out to the upstream side portion 23 cuts downward in the widened space TS between the side windows W1 and W2 and the upper end HT side of the occupant head H.

そしてさらに、サイドウインドＷ１・Ｗ２と乗員頭部Ｈとの間の広げられたスペースＴＳには、エアバッグ１９における蛇腹折り部位５５の下方側が、順次侵入し、折り塊部位５６も、折りを解消しつつ侵入する。この折り塊部位５６は、エアバッグ本体２０の下縁２０ｂ側を車外側Ｏに向けて巻く折り畳み方であることから、その巻きを解くような折りの解消時、乗員頭部Ｈに干渉しても、乗員頭部Ｈに案内されるように、巻きを解く態様となり、エアバッグ本体２０は、円滑に折りを解消して、乗員頭部Ｈの下方まで、展開を完了させることとなる。勿論、折り塊部位５６における折りの解消前の部位では、巻いた状態を維持して、車内外方向の厚さを嵩張らないように薄くしていることから、狭いサイドウインドＷ１・Ｗ２と乗員頭部Ｈとの隙間ＴＳに円滑に侵入しつつ、折りを解消することとなる。   Further, the space TS between the side windows W1 and W2 and the occupant's head H sequentially enters the lower side of the bellows fold portion 55 in the airbag 19, and the fold portion 56 also eliminates folding. While invading. Since this fold portion 56 is a folding method in which the lower edge 20b side of the airbag main body 20 is wound toward the vehicle outer side O, it interferes with the occupant's head H at the time of releasing the folding to release the winding. However, the air bag body 20 is smoothly unfolded so as to be guided by the occupant head H, and the folding of the airbag body 20 is smoothly completed to the lower side of the occupant head H. Of course, in the portion of the fold portion 56 before the folding is canceled, the rolled state is maintained and the thickness in the vehicle interior / exterior direction is reduced so as not to be bulky, so that the narrow side windows W1 and W2 and the passenger head Folding is eliminated while smoothly entering the gap TS with the portion H.

さらにまた、保護膨張部２５・２９の本体セル２６・３０では、図３のＡの二点鎖線・図４のＡの二点鎖線に示すように、この時点での内圧が低いことから、仮結合部３３・３４が車内側・車外側壁部２１ａ・２１ｂ相互を結合させた状態としており、小セル２６ａ・３０ａを薄くした状態で展開を完了させることとなって、サイドウインドＷ１・Ｗ２と乗員頭部Ｈとの間が狭くとも、円滑、かつ、安定して、乗員頭部Ｈの側方に、ロール折りの巻きを解いて、本体セル２６・３０を展開させることができる。   Furthermore, in the main body cells 26 and 30 of the protective expansion portions 25 and 29, the internal pressure at this point is low as shown by the two-dot chain line in FIG. 3A and the two-dot chain line in FIG. The coupling portions 33 and 34 are in a state in which the vehicle inner and vehicle outer wall portions 21a and 21b are coupled to each other, and the deployment is completed in a state where the small cells 26a and 30a are thinned, and the side windows W1 and W2 Even if the space between the occupant head H is narrow, the main body cells 26 and 30 can be unfolded smoothly and stably by unwinding the roll fold around the occupant head H.

そして、保護膨張部２５・２９の展開完了後には、本体セル２６・３０の内圧上昇に伴って、仮結合部３３・３４が車内側・車外側壁部２１ａ・２１ｂ相互を分離させることから、本体セル２６・３０は、図１０・１３に示すように、仮結合部３３・３４を配設させていた部位を、厚く膨らませることができて、ガス供給路部２３の下部２３ｂとともに、クッション性良く、すなわち、十分な衝撃吸収ストロークを確保して、乗員頭部Ｈを保護できる。   And, after the expansion of the protective expansion portions 25 and 29 is completed, the temporary coupling portions 33 and 34 separate the vehicle inner side and vehicle outer side wall portions 21a and 21b from each other as the internal pressure of the main body cells 26 and 30 increases. As shown in FIGS. 10 and 13, the main body cells 26 and 30 can inflate thickly the portions where the temporary coupling portions 33 and 34 are disposed, and, together with the lower portion 23 b of the gas supply passage portion 23, The occupant head H can be protected with good performance, that is, a sufficient shock absorbing stroke can be secured.

その結果、実施形態の頭部保護エアバッグ１９では、サイドウインドＷ１・Ｗ２と乗員頭部Ｈとの隙間が狭くとも、円滑かつ安定して、その隙間に展開させることができ、さらに、クッション性良く、乗員頭部Ｈを保護できる。   As a result, in the head protection airbag 19 of the embodiment, even if the gap between the side windows W1 and W2 and the occupant head H is narrow, the head protection airbag 19 can be smoothly and stably deployed in the gap. The passenger head H can be protected well.

そして、実施形態の頭部保護エアバッグ１９では、折り畳み完了時、図７のＢに示すような状態と相違して、図７のＡに示すように、折目確認用の目印４５・４６が、蛇腹折り部位５５の第１・２折目Ｄ１・Ｄ２の位置に配置されていれば、折り畳み完了体５８を、斜め上方側における車内側Ｉの方向からと車外側Ｏの方向からとの２方向から目視するだけで、蛇腹折りの折幅Ｂが、的確であって、適正に蛇腹折りされていることが確認できる。また、蛇腹折りの確認のために、折り畳み完了体５８を斜め上方側における車内側Ｉの方向からと車外側Ｏの方向からとの２方向から目視した際、同時に、ねじれ防止確認用の目印４８・４９・５０・５１が、第１・２折目Ｄ１・Ｄ２に沿って、すなわち、適正な折幅Ｂと折目位置とで蛇腹折りされた蛇腹折り部位５５の第１・２折目Ｄ１・Ｄ２に沿って、配置されていることを確認できれば、取付部４０に対して、ねじれずに、エアバッグ１９が折り畳まれたことを確認できて、その結果、エアバッグ１９が、的確に蛇腹折りされ、かつ、ねじれずに適正に折り畳まれたことを、折り畳み完了体５８を斜め上方側における車内側Ｉの方向からと車外側Ｏの方向からとの２方向から目視するだけで、容易に確認できる。   And in the head protection airbag 19 of embodiment, when folding is completed, as shown to A of FIG. 7, the mark 45 * 46 for fold confirmation is different from the state as shown to B of FIG. If the first and second folds D1 and D2 of the bellows fold portion 55 are disposed, the folding completion body 58 is moved from the direction of the vehicle inner side I and the direction of the vehicle outer side O on the diagonally upper side. By simply viewing from the direction, it can be confirmed that the folding width B of the bellows fold is accurate and properly folded. In order to confirm the accordion fold, when the folding completion body 58 is viewed from two directions, that is, from the direction of the vehicle inner side I and the direction of the vehicle outer side O on the diagonally upper side, at the same time, a mark 48 for confirming torsion prevention. The first and second folds D1 of the bellows fold portion 55 in which 49, 50, and 51 are bellows folded along the first and second folds D1 and D2, that is, at an appropriate fold width B and a fold position. If it can be confirmed that the air bag 19 is arranged along D2, it can be confirmed that the airbag 19 is folded without being twisted with respect to the mounting portion 40. As a result, the air bag 19 is accurately accordion. It can be easily confirmed that the folding completed body 58 is folded and properly folded without twisting by simply observing the folding completed body 58 from two directions of the vehicle interior I and the vehicle exterior O on the diagonally upper side. I can confirm.

そのため、適正な折り畳みを確認した状態で、頭部保護エアバッグ１９を車両に搭載させれば、簡単に、適正な姿勢で、頭部保護エアバッグ１９を車両に搭載することができて、その後に、膨張用ガスＧが流入されれば、蛇腹折り部位５５の折りの解消時、蛇腹折り部位５５の下方の折り塊部位５６が、蛇腹折り部位５５の折り重ね方向に沿って押し出されて、そして、展開膨張することとなり、乗員頭部ＨとサイドウインドＷ１・Ｗ２との間が狭くとも、サイドウインドＷ１・Ｗ２に沿わせて、円滑に、頭部保護エアバッグ１９を展開膨張させることができることとなる。   Therefore, if the head protection airbag 19 is mounted on the vehicle in a state where proper folding is confirmed, the head protection airbag 19 can be easily mounted on the vehicle in an appropriate posture. In addition, if the expansion gas G is introduced, when the folding of the bellows folding portion 55 is canceled, the fold portion 56 below the bellows folding portion 55 is pushed out along the folding direction of the bellows folding portion 55, Then, even if the space between the occupant head H and the side windows W1 and W2 is narrow, the head protection airbag 19 can be smoothly deployed and inflated along the side windows W1 and W2. It will be possible.

したがって、実施形態の頭部保護エアバッグ１９では、折り畳み完了時の状態で、蛇腹折りの折目Ｄ１・Ｄ２の配置位置や折幅Ｂ、あるいは、ねじれ防止を容易に確認できて、簡単に、適正な姿勢で車両に搭載することができる。なお、折目確認用やねじれ防止確認用の目印４５・４６・４８・４９・５０・５１は、車両搭載時のエアバッグ１９の姿勢の確認にも、利用することができ、エアバッグ１９の搭載作業を効率的に行うことができる。   Therefore, in the head protection airbag 19 of the embodiment, in the state when the folding is completed, the arrangement position and the folding width B of the bellows folds D1 and D2, or the prevention of twisting can be easily confirmed. It can be mounted on the vehicle in an appropriate posture. In addition, the marks 45, 46, 48, 49, 50, 51 for confirming folds and preventing twisting can also be used for confirming the attitude of the airbag 19 when mounted on the vehicle. Installation work can be performed efficiently.

なお、実施形態の場合には、折り畳み完了体５８において、蛇腹折り部位５５が、ロール折りした折り塊部位５６の上部５６ａを車内外方向で包むように、配設されているため、単に、折り畳み完了体５８を、斜め上方でなく、略水平方向の車内側Ｉの方向からと車外側Ｏの方向からとの２方向から目視するだけで、目印４５・４６・４８・４９・５０・５１を確認することができる。   In the case of the embodiment, in the folding completion body 58, the bellows fold portion 55 is disposed so as to wrap the upper portion 56a of the folded fold portion 56 in the vehicle interior and exterior direction, so that the folding is simply completed. By simply looking at the body 58 from two directions, not from diagonally above, but from the direction of the vehicle interior I in the substantially horizontal direction and from the direction of the vehicle exterior O, the marks 45, 46, 48, 49, 50, and 51 are confirmed. can do.

さらに、実施形態の場合、取付部４０と蛇腹折り部位５５との境界部位Ｘが、蛇腹折り部位５５の上面側における車内外方向の略中央位置、すなわち、蛇腹折りの折幅Ｂの略中間位置、に配置されるように、エアバッグ１９が折り畳まれて、ねじれ防止確認用の目印として、取付部４０と第１折目Ｄ１との間、及び、第１折目Ｄ１と第２折目Ｄ２との間における折り畳み完了時に露出するエリアの取付部４０と第２折目Ｄ２との間、との少なくともに２箇所に、目印４８・５１を配設させている。そのため、折り畳み完了体５８を、車外側Ｏと車内側Ｉとの両側から、即座に、目印４８・５１を目視して、ねじれ防止を確認できることから、迅速にねじれの有無を確認できる。   Furthermore, in the case of the embodiment, the boundary portion X between the attachment portion 40 and the bellows folding portion 55 is a substantially center position in the vehicle interior / exterior direction on the upper surface side of the bellows folding portion 55, that is, a substantially middle position of the folding width B of the bellows folding. The airbag 19 is folded so as to be disposed at the positions of the mounting portion 40 and the first fold D1 and between the first fold D1 and the second fold D2. Marks 48 and 51 are disposed at least at two places between the attachment portion 40 of the area exposed when the folding between the second fold D2 and the second fold D2. Therefore, the folding completion body 58 can be immediately observed from both sides of the vehicle outer side O and the vehicle inner side I by visually observing the marks 48 and 51, so that the prevention of twisting can be confirmed.

ちなみに、折目確認用の目印４５・４６が、蛇腹折りの第１・２折目Ｄ１・Ｄ２に、それぞれ、配置されている状態で、折り畳み完了体５８がねじれていれば、それらの第１・２折目Ｄ１・Ｄ２の目印４５・４６も、ねじれることから、ねじれを確認できる。しかし、上記のように、折り畳み完了体５８の車内側Ｉと車外側Ｏとの両側から、ねじれ防止を確認できる目印４８・５１があれば、それらの目印４８・５１が、取付部４０からの距離が大きくなったり小さくなることによって、折目確認用の目印４５・４６と併せて、即座に判別できることとなる。特に、実施形態のエアバッグ１９の折り畳み完了体５８では、取付部４０と蛇腹折り部位５５との境界部位Ｘが、折り畳み完了体５８の車内外方向の略中央位置、すなわち、蛇腹折りの折幅Ｂの中間位置付近に配置されており、折目確認用やねじれ防止確認用の目印が無いと、蛇腹折りが的確な折幅で折り畳まれているか否かは、蛇腹折りで折り重ねた方向から見て、確認する必要が生じ、その際、取付部４０が邪魔となって確認し難く、かつ、ねじれ防止の確認も、車内側Ｉや車外側Ｏからの２方向から注意して見る必要が生じ、結局、折り重ね方向、車内側Ｉの方向、及び、車外側Ｏの方向からの３方向から、注意して目視する必要が生ずる。しかし、上記のような構成では、折り畳み完了体５８を斜め上方側等における車内側Ｉの方向からと車外側Ｏの方向からとの２方向から目視するだけで、エアバッグ１９が適正に折り畳まれたことを、容易に確認することができる。   Incidentally, if the folding completion body 58 is twisted in the state in which the fold confirmation marks 45 and 46 are respectively arranged in the first and second folds D1 and D2 of the bellows fold, -Since the marks 45 and 46 of the second folds D1 and D2 are also twisted, the twist can be confirmed. However, as described above, if there are the marks 48 and 51 that can confirm the prevention of twisting from both the inside I and the outside O of the folding completion body 58, these marks 48 and 51 are removed from the mounting portion 40. By increasing or decreasing the distance, it is possible to immediately discriminate together with the marks 45 and 46 for confirming the fold. In particular, in the folding completion body 58 of the airbag 19 of the embodiment, the boundary portion X between the attachment portion 40 and the bellows folding portion 55 is a substantially central position in the vehicle interior / exterior direction of the folding completion body 58, that is, the folding width of the bellows folding. It is arranged near the middle position of B, and if there is no mark for confirmation of folds or confirmation of twisting, whether or not the bellows fold is folded with an accurate folding width is determined from the direction folded by bellows fold. It is necessary to see and confirm, and at that time, it is difficult to confirm because the mounting portion 40 is in the way, and it is also necessary to check the prevention of twisting from two directions from the inside I and the outside O. As a result, it is necessary to carefully observe from three directions from the folding direction, the direction of the vehicle inner side I, and the direction of the vehicle outer side O. However, in the configuration as described above, the airbag 19 is properly folded only by visually observing the folding completion body 58 from two directions, ie, the direction from the vehicle inner side I and the direction from the vehicle outer side O on the diagonally upper side. This can be easily confirmed.

また、実施形態の場合には、エアバッグ本体２０が袋織りによって形成されて、折目確認用とねじれ確認用との目印４５・４６・４８・４９・５０・５１を、袋織りの経糸若しくは緯糸（実施形態の場合には経糸）から形成するとともに、他の一般部から色を異ならせ、かつ、相互にも、色を異ならせて、配設させていることから、別途、目印を印刷する等の作業を行わなくとも、エアバッグ１９の製造時に、同時に目印４５・４６・４８・４９・５０・５１を形成でき、容易に目印４５・４６・４８・４９・５０・５１をエアバッグ本体２０に容易に付けることができる。   In the case of the embodiment, the airbag body 20 is formed by bag weaving, and marks 45, 46, 48, 49, 50, 51 for fold confirmation and twist confirmation are used as bag weft warp or In addition to being formed from wefts (in the case of the embodiment, warp), the colors are different from the other general parts, and the colors are also different from each other. Mark 45, 46, 48, 49, 50, 51 can be formed at the same time when the airbag 19 is manufactured without the need to carry out such work, and the marks 45, 46, 48, 49, 50, 51 can be easily formed. It can be easily attached to the main body 20.

なお、実施形態では、蛇腹折り部位５５の折目の数を二つとしたが、蛇腹折りの折りを重ねて、それ以上の折目を付けて、蛇腹折り部位５５を形成してもよい。   In the embodiment, the number of folds in the bellows fold portion 55 is two. However, the bellows fold portion 55 may be formed by overlapping the bellows folds and adding more folds.

また、実施形態の場合、蛇腹折り部位５５の下方の折り塊部位５６を、ロール折りして形成した場合を示したが、折り塊部位５６は、蛇腹折りの折りの解消時に、蛇腹折りの折り重ねた方向で押出可能に折り畳まれていれば、他の折り畳み方で、折り畳んでも良い。   In the case of the embodiment, the fold portion 56 below the bellows fold portion 55 is formed by roll folding. However, the fold portion 56 is folded when the bellows fold is eliminated. If it is folded so as to be extrudable in the stacked direction, it may be folded by another folding method.

本発明の一実施形態の頭部保護エアバッグが使用される頭部保護エアバッグ装置の車両搭載状態を示す概略正面図である。It is a schematic front view which shows the vehicle mounting state of the head protection airbag apparatus in which the head protection airbag of one Embodiment of this invention is used. 実施形態のエアバッグの正面図である。It is a front view of the airbag of an embodiment. 実施形態のエアバッグにおける膨張時の状態を順に示す部分横断面図であり、図２のIII−III部位に対応する。It is a partial cross-sectional view which shows the state at the time of the inflation in the airbag of embodiment sequentially, and respond | corresponds to the III-III site | part of FIG. 実施形態のエアバッグにおける膨張時の状態を順に示す部分横断面図であり、図２のIV−IV部位に対応する。It is a partial cross-sectional view which shows the state at the time of the inflation in the airbag of embodiment sequentially, and respond | corresponds to the IV-IV site | part of FIG. 実施形態のエアバッグにおける膨張時の状態を順に示す部分縦断面図であり、図２のＶ−Ｖ部位に対応する。It is a fragmentary longitudinal cross-sectional view which shows the state at the time of expansion | swelling in the airbag of embodiment sequentially, and respond | corresponds to the VV site | part of FIG. 実施形態のエアバッグの折り畳み工程を説明する図である。It is a figure explaining the folding process of the airbag of an embodiment. 実施形態のエアバッグの適正な折り畳み完了状態と折目がずれた状態とのそれぞれの車内側・車外側から見た状態を示す部分斜視図である。It is a fragmentary perspective view which shows the state seen from each vehicle inner side and vehicle outer side of the state by which the appropriate folding of the airbag of embodiment was completed, and the state where the crease | fold was shifted | deviated. 実施形態のエアバッグの車両搭載状態の概略縦断面図であり、図１のVIII−VIII部位に対応する。It is a schematic longitudinal cross-sectional view of the air bag of the embodiment mounted on the vehicle, and corresponds to the VIII-VIII part of FIG. 実施形態の本体セル付近のエアバッグの膨張を順に説明する図であり、図８に示す部位に対応する。It is a figure explaining the expansion | swelling of the airbag of the main body cell vicinity of embodiment in order, and respond | corresponds to the site | part shown in FIG. 図９の状態の後の膨張状態を順に示す図である。It is a figure which shows the expansion | swelling state after the state of FIG. 9 in order. 実施形態のエアバッグの車両搭載状態の概略縦断面図であり、図１のXI−XI部位に対応する。It is a schematic longitudinal cross-sectional view of the vehicle-mounted state of the airbag of embodiment, and respond | corresponds to the XI-XI site | part of FIG. 実施形態の本体セル付近のエアバッグの膨張初期を順に説明する図であり、図１１に示す部位に対応する。It is a figure explaining the inflate initial stage of the airbag of the main body cell vicinity of embodiment in order, and respond | corresponds to the site | part shown in FIG. 図１２の状態の後の膨張状態を順に示す図である。It is a figure which shows the expansion state after the state of FIG. 12 in order.

符号の説明Explanation of symbols

１９…頭部保護エアバッグ、
２０…エアバッグ本体、
２１…ガス流入部、
２１ａ…車内側壁部、
２１ｂ…車外側壁部、
２３…（上流側部位）ガス供給路部、
４０…取付部、
４５・４６…（折目確認用）目印、
４８・４９・５０・５１…（ねじれ防止確認用）目印、
５５…蛇腹折り部位、
５６…折り塊部位、
Ｘ…境界部位、
Ｄ１…第１折目、
Ｄ２…第２折目、
Ｂ…折幅、
Ｖ…車両、
Ｗ１・Ｗ２…（窓）サイドウインド、
Ｇ…膨張用ガス、
Ｍ…頭部保護エアバッグ装置。 19 ... Head protection airbag,
20 ... airbag body,
21 ... Gas inflow part,
21a ... the inner wall of the vehicle,
21b ... car outer wall part,
23 ... (upstream part) gas supply passage,
40 ... Mounting part,
45.46 ... (for fold confirmation)
48, 49, 50, 51 ... (for confirmation of twist prevention)
55 ... Bellows fold part,
56 ... folded part,
X ... Boundary part,
D1 ... first fold,
D2 ... Second fold,
B ... fold width,
V ... Vehicle,
W1, W2 ... (window) side window,
G ... expansion gas,
M: Head protection airbag device.

Claims (3)

車両への搭載時、窓の上縁側に折り畳まれて収納され、膨張用ガスの流入時に、前記窓の車内側を覆い可能に、前記窓の上縁側から下方に展開膨張する構成として、
上縁側に配置されて車体側に取り付けるための取付部と、車内側と車外側との両壁部の間に膨張用ガスを流入させて、前記窓を覆うように膨張するガス流入部と、を備えて構成される頭部保護エアバッグであって、
前記ガス流入部が、
上部側に、膨張用ガスの上流側部位として、前記車内側・車外側壁部とを重ねた状態で上下方向に折り重ねる蛇腹折りによって形成した蛇腹折り部位、を配置させ、かつ、
該蛇腹折り部位の下方で折り畳まれて、前記蛇腹折りの折りの解消時に、前記蛇腹折りの折り重ね方向に沿って押し出される折り塊部位、を配置させて、
前記窓の上縁側に収納される構成として、
前記蛇腹折りにおける前記取付部側からの適正位置の第１番目の第１折目と第２番目の第２折目との位置に、それぞれ、前記第１・２折目に沿って配置される折目確認用の目印が、配設されるとともに、
前記取付部から前記第２折目との間の折り畳み完了時の露出するエリアに、前記第１・２折目に沿って配置される少なくとも一つのねじれ防止確認用の目印が、配設されて構成されていることを特徴とする頭部保護エアバッグ。 When mounted on a vehicle, it is folded and stored on the upper edge side of the window, and when the inflating gas flows in, the inside of the window can be covered, and the structure expands and expands downward from the upper edge side of the window.
A mounting portion disposed on the upper edge side for mounting on the vehicle body side, a gas inflow portion that expands so as to cover the window by allowing an inflating gas to flow between both the vehicle interior and vehicle exterior wall portions; A head protection airbag comprising:
The gas inflow part is
On the upper side, an accordion fold portion formed by accordion folds folded in the vertical direction with the vehicle inner side / vehicle outer wall portion being overlapped as an upstream side portion of the inflation gas, and
Folded below the bellows fold portion, and when the fold of the bellows fold is eliminated, a fold portion that is pushed out along the folding direction of the bellows fold is disposed,
As a configuration stored on the upper edge side of the window,
Arranged along the first and second folds at the first and second folds at the appropriate positions from the mounting portion side in the bellows fold, respectively. A fold confirmation mark is provided,
At least one mark for preventing twisting arranged along the first and second folds is disposed in an exposed area when the folding between the mounting portion and the second fold is completed. A head protection airbag characterized by being configured. 前記取付部と前記蛇腹折り部位との境界部位が、前記蛇腹折り部位の上面側における車内外方向の略中央位置に配置されるように、折り畳まれ、
前記ねじれ防止確認用の目印が、前記取付部と第１折目との間、及び、第１折目と第２折目との間における折り畳み完了時に露出するエリアの前記取付部と第２折目との間、との少なくともに２箇所に、配設されていることを特徴とする請求項１に記載の頭部保護エアバッグ。 Folded so that the boundary part between the attachment portion and the bellows folding part is disposed at a substantially central position in the vehicle interior / exterior direction on the upper surface side of the bellows folding part,
The marks for preventing twisting are provided between the attachment portion and the first fold, and between the attachment portion and the second fold in an area exposed when folding is completed between the first fold and the second fold. The head protection airbag according to claim 1, wherein the head protection airbag is disposed at least at two locations between the eyes. 前記エアバッグが袋織りによって形成され、
折目確認用とねじれ防止確認用との目印が、袋織りの経糸若しくは緯糸から形成されるとともに、他の一般部から色を異ならせ、かつ、相互にも、色を異ならせて、配設されていることを特徴とする請求項１若しくは請求項２に記載の頭部保護エアバッグ。 The airbag is formed by bag weaving,
Marks for crease confirmation and twist prevention confirmation are formed from bag-woven warp or weft, different colors from other general parts, and different colors from each other The head protection airbag according to claim 1 or 2, wherein the head protection airbag is provided.

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