JP5561223B2 - Head protection airbag device - Google Patents

Head protection airbag device Download PDF

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JP5561223B2
JP5561223B2 JP2011072978A JP2011072978A JP5561223B2 JP 5561223 B2 JP5561223 B2 JP 5561223B2 JP 2011072978 A JP2011072978 A JP 2011072978A JP 2011072978 A JP2011072978 A JP 2011072978A JP 5561223 B2 JP5561223 B2 JP 5561223B2
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airbag
folded
vehicle
inflation
head protection
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JP2012206573A (en
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潤 佐藤
渉 三浦
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Toyoda Gosei Co Ltd
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本発明は、窓の車内側における上縁側に折り畳まれて収納されるとともに、内部に膨張用ガスを流入させて窓の車内側を覆うように展開膨張するエアバッグを備える頭部保護エアバッグ装置に関する。   The present invention relates to a head protecting airbag device including an airbag that is folded and housed on the upper edge side of the window inside the vehicle, and that expands and inflates so as to cover the vehicle interior of the window by flowing an inflating gas into the inside. About.

従来、頭部保護エアバッグ装置では、エアバッグは、内部に膨張用ガスを流入させて窓の車内側を覆うように展開膨張する膨張遮蔽部と、膨張遮蔽部の上縁側において前後方向に沿って複数配置される取付部と、を備える構成として、取付部を、窓の上縁側の車体側の取付部位に取り付けることにより、車体側に取り付けられる構成であった(例えば、特許文献1参照)。この従来の頭部保護エアバッグ装置では、エアバッグを収納するための窓の上縁側の収納部位が、湾曲していることから、この収納部位に支障なく収納させるために、エアバッグを、各取付部間を弛ませた状態で、取付部位に取付可能に、前後の長さ寸法を、長くしていた。   2. Description of the Related Art Conventionally, in a head protection airbag device, an airbag extends along the front-rear direction on the upper edge side of the expansion shielding portion and an expansion shielding portion that expands and inflates so as to cover the vehicle interior side of the window by inflating the inflation gas. And a plurality of mounting portions disposed on the vehicle body side by attaching the mounting portion to the mounting portion on the vehicle body side on the upper edge side of the window (see, for example, Patent Document 1). . In this conventional head protection airbag device, since the storage portion on the upper edge side of the window for storing the airbag is curved, in order to store the airbag in the storage portion without any trouble, The front and rear length dimensions have been lengthened so that they can be attached to the attachment site with the attachment portions loosened.

特開平10−166991号公報Japanese Patent Laid-Open No. 10-166991

通常、頭部保護エアバッグ装置では、作動時に乗員の頭部を安定して保護するために、所定の箇所を厚く膨張させることが望まれている。また、頭部保護エアバッグ装置は、窓の上縁側においてエアバッグを収納させるスペースが狭いことから、エアバッグをコンパクトに折り畳んで収納させる必要もある。なお、従来の頭部保護エアバッグ装置では、エアバッグにおける取付部間の弛みは、膨張完了時のエアバッグが部分的に引きつって歪むことを抑制するためのものであり、エアバッグは、膨張完了時に、取付部間の弛みをなくした状態として、膨張遮蔽部は、前後方向に略沿った方向でテンションを張った略板状として配置されるものであった。すなわち、従来の頭部保護エアバッグ装置では、取付部間に弛みを生じさせた状態で、エアバッグを車体側の取付部位に取り付けている構成であるものの、エアバッグの膨張遮蔽部は、膨張完了形状を略板状として、前後方向に略沿って配置されるものであり、膨張遮蔽部を厚く膨張させる点に改善の余地があった。なお、膨張遮蔽部の膨張完了時の厚さを厚くする場合、単純に、膨張遮蔽部の厚さを厚くするように設定することもできるが、膨張遮蔽部の厚さを厚くすれば、容積が増大することとなって、インフレーター等が大型化して、好ましくない。   Usually, in the head protection airbag device, in order to stably protect the occupant's head during operation, it is desired to inflate a predetermined portion thickly. Further, since the space for storing the airbag is narrow on the upper edge side of the window, the head protection airbag device needs to be folded and stored in a compact manner. In the conventional head protection airbag device, the looseness between the attachment portions in the airbag is for suppressing the airbag at the time of completion of inflation from being partially pulled and distorted. When the expansion is completed, the expansion shielding part is arranged in a substantially plate shape in which tension is applied in a direction substantially along the front-rear direction, in a state in which the slack between the attachment parts is eliminated. That is, in the conventional head protection airbag device, the airbag is attached to the attachment portion on the vehicle body side in a state in which slack is generated between the attachment portions, but the inflation shielding portion of the airbag is inflated. The completed shape is substantially plate-like, and is arranged substantially along the front-rear direction. There is room for improvement in that the expansion shielding part is inflated thickly. In addition, when increasing the thickness of the expansion shield when the expansion is completed, it can be simply set to increase the thickness of the expansion shield, but if the thickness of the expansion shield is increased, the volume This increases the size of the inflator and the like, which is not preferable.

本発明は、上述の課題を解決するものであり、容積の増大を抑制して、かつ、エアバッグの所定の箇所を厚く膨張させることが可能な頭部保護エアバッグ装置を提供することを目的とする。   The present invention solves the above-described problems, and an object thereof is to provide a head protection airbag device capable of suppressing an increase in volume and inflating a predetermined portion of an airbag thickly. And

本発明に係る頭部保護エアバッグ装置は、窓の車内側における上縁側に折り畳まれて収納されるエアバッグを備え、
エアバッグが、内部に膨張用ガスを流入させて窓の車内側を覆うように展開膨張する膨張遮蔽部と、膨張遮蔽部の上縁側において前後方向に沿って複数配置される取付部と、を備える構成として、取付部を、窓の上縁側の車体側の取付部位に取り付けることにより、車体側に取り付けられる構成とされる頭部保護エアバッグ装置であって、
エアバッグが、
膨張遮蔽部を平らに展開した状態において、隣接する取付部間の前後の離隔距離を、対応する取付部位間の離隔距離よりも大きく設定されるとともに、エアバッグの膨張完了時に膨張遮蔽部における取付部間の領域を車幅方向側で蛇行させるような距離に設定され
膨張遮蔽部を平らに展開した状態で、
エアバッグの膨張完了時に車幅方向側で蛇行させる部位において、取付部間の離隔距離を、対応する取付部位間の離隔距離に対応させるように、上下方向に略沿った折目を付けて、取付部間の領域の前後方向の幅寸法を縮めて折り畳むとともに、折り畳み状態を、エアバッグの膨張完了時に、平らに展開すれば前後方向の幅寸法を折り畳み前の状態に復元可能とする状態として、折り畳み、さらに、
上下方向の幅寸法を縮めるように折り畳まれて、
収納されていることを特徴とする。
The head protection airbag device according to the present invention includes an airbag that is folded and stored on the upper edge side of the window inside the vehicle,
An airbag includes an inflating shielding part that expands and inflates so that an inflating gas flows into the inside of the air bag to cover the inside of the window, and a plurality of mounting parts that are arranged along the front-rear direction on the upper edge side of the inflating shielding part. A head protection airbag device configured to be attached to the vehicle body side by attaching the attachment portion to the vehicle body side attachment portion on the upper edge side of the window,
Airbag
In a state where the flattened inflation shielding portion, the front and rear distance between adjacent mounting portion, is set larger than the distance between the corresponding attachment site Rutotomoni, mounted in the inflatable protective shielding part upon complete inflation of the air bag is set an area between the parts at a distance such as to meander in a vehicle width direction,
In a state where the expansion shield is flatly deployed,
At the site to meander on the vehicle width direction side when the inflation of the airbag is completed, crease along the vertical direction is attached so that the separation distance between the attachment portions corresponds to the separation distance between the corresponding attachment portions, As the state in which the width dimension in the front-rear direction of the region between the mounting parts is reduced and folded, and the folded state can be restored to the state before the folding by unfolding flat when the airbag is inflated. , Folding, and even
Folded to reduce the vertical width,
It is stored .

本発明の頭部保護エアバッグ装置では、エアバッグが、平らに展開した状態で、所定の隣接する取付部間の前後の離隔距離を、これらの取付部を取り付けるための車体側の取付部位間の離隔距離よりも大きく設定することにより、エアバッグの膨張完了時に、膨張遮蔽部において、隣接する取付部間の部位を、車幅方向側で蛇行させるようにして、厚く膨張させることができる。すなわち、本発明の頭部保護エアバッグ装置では、膨張遮蔽部を、厚く膨張させたい領域の上方に配置される取付部間の離隔距離を大きくするように、設定するだけで、任意の箇所の膨張完了時の厚さを厚くすることができることから、容積の増大を極力抑制して、所定箇所を実質的に厚く膨張させることができる。   In the head protection airbag device of the present invention, in the state where the airbag is flatly deployed, the front-rear separation distance between predetermined adjacent mounting portions is determined between the mounting parts on the vehicle body side for mounting these mounting portions. By setting the distance larger than the separation distance of the airbag, when the airbag is completely inflated, the portion between the adjacent mounting portions can be inflated thickly in the inflating shielding portion so as to meander on the vehicle width direction side. That is, in the head protection airbag device according to the present invention, the expansion shielding part is set at an arbitrary position only by setting the separation distance between the mounting parts arranged above the region to be thickly inflated. Since the thickness at the completion of the expansion can be increased, an increase in volume can be suppressed as much as possible, and the predetermined portion can be expanded substantially thickly.

したがって、本発明の頭部保護エアバッグ装置では、容積の増大を抑制して、かつ、エアバッグの所定の箇所を厚く膨張させることができて、乗員をクッション性良く受け止めることができる。   Therefore, in the head protection airbag device of the present invention, it is possible to suppress an increase in volume, inflate a predetermined portion of the airbag thickly, and to catch an occupant with good cushioning properties.

また、本発明の頭部保護エアバッグ装置では、エアバッグを、膨張遮蔽部を平らに展開した状態で、取付部間の領域の前後方向の幅寸法を縮めて折り畳んだ後、上下方向の幅寸法を縮めるように折り畳んで収納させる構成としていることから、上下方向の幅寸法を縮めた後に前後方向の幅寸法を縮めるように折り畳む場合と比較して、エアバッグを折り畳んで形成される折り完了体に、部分的に大きく嵩張る領域が生じ難く、エアバッグをコンパクトに折り畳むことができFurther, the head protection air bag device of the present invention, an air bag, while flattened inflation shielding portion, after the longitudinal width of the region between the mounting portion folded contraction Umate, vertical Because it is configured to be folded and stored so as to reduce the width dimension, it is formed by folding the airbag compared to the case of folding the width dimension in the front-rear direction after reducing the width dimension in the vertical direction. that the folded-up body, hardly occurs partially large bulky region, Ru can be folded air bag compactly.

本発明の一実施形態である頭部保護エアバッグ装置を車内側から見た概略正面図である。It is the schematic front view which looked at the head protection airbag apparatus which is one Embodiment of this invention from the vehicle inside. 図1のII−II部位の断面図である。It is sectional drawing of the II-II site | part of FIG. 実施形態の頭部保護エアバッグ装置で使用するエアバッグを平らに展開した状態の正面図である。It is a front view of the state where the air bag used with the head protection air bag device of an embodiment was developed flat. 図3のエアバッグを予備折りした状態の正面図である。It is a front view of the state which carried out the preliminary folding of the airbag of FIG. 実施形態の頭部保護エアバッグ装置において、エアバッグが膨張を完了させた状態を車内側から見た概略正面図である。In the head protection airbag device of an embodiment, it is the outline front view which looked at the state where the airbag completed inflation from the car inside. 実施形態の頭部保護エアバッグ装置において、エアバッグが膨張を完了させた状態を示す前後方向に沿った概略部分拡大断面図である。In the head protection airbag device of an embodiment, it is a schematic partial expanded sectional view along the front-back direction which shows the state where the airbag completed inflation.

以下、本発明の一実施形態を図面に基づいて説明する。実施形態の頭部保護エアバッグ装置Mは、図1に示すように、2つの窓(サイドウィンド)W1,W2を有した二列シートタイプの車両Vに搭載されている。実施形態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14と、取付ブラケット11,15と、エアバッグカバー9と、を備えて構成されている。エアバッグ19は、図1,2に示すように、車両Vの車内側における窓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の上方の領域まで、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 FIG. 1, the head protection airbag device M of the embodiment is mounted on a two-row seat type vehicle V having two windows (side windows) W1 and W2. The head protection airbag device M according to the embodiment includes an airbag 19, an inflator 14, mounting brackets 11 and 15, and an airbag cover 9. As shown in FIGS. 1 and 2, the airbag 19 has a rear pillar that passes from the lower edge side of the front pillar portion FP to the lower edge side of the roof side rail portion RR on the upper edge side of the windows W1 and W2 on the inner side of the vehicle V. The region up to the region RP is folded and stored.

エアバッグカバー9は、図1,2,6に示すように、フロントピラー部FPに配置されるフロント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、のそれぞれの下縁から、構成されている。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、合成樹脂製として、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(車体)側のインナパネル2における車内側に、取付固定されている。また、エアバッグカバー9は、折り畳まれて収納されるエアバッグ19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19を車内側へ突出可能とするために、エアバッグ19に押されて開き可能な構成とされている。   As shown in FIGS. 1, 2, and 6, the airbag cover 9 is provided under the front pillar garnish 4 disposed in the front pillar portion FP and the roof head lining 5 disposed in the roof side rail portion RR. Consists of edges. 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 on the body 1 (vehicle body) side in the front pillar portion FP and the roof side rail portion RR, respectively. ing. Further, the airbag cover 9 is disposed so as to cover the inside of the airbag 19 that is folded and stored, and in order to allow the airbag 19 to be projected to the inside of the vehicle when deployed and inflated. It is configured to be opened by being pushed by 19.

インフレーター14は、エアバッグ19に膨張用ガスを供給するもので、図1に示すように、外形形状を略円柱状としたシリンダタイプとして、先端側に、膨張用ガスを吐出可能な図示しないガス吐出口を、配設させている。インフレーター14は、ガス吐出口付近を含めた先端側を、エアバッグ19の後述するガス流入口部24に挿入させ、ガス流入口部24の後端24a側に外装されるクランプ17を利用して、エアバッグ19に対して連結されている。また、インフレーター14は、インフレーター14を保持する取付ブラケット15と、取付ブラケット15をボディ(車体)1側のインナパネル2に固定するためのボルト16と、を利用して、インナパネル2においてセンターピラー部CPの上方となる位置に、取り付けられている。インフレーター14は、図示しないリード線を介して、車両の図示しない制御装置と電気的に接続されており、制御装置が車両Vの側面衝突を検知した際に、制御装置からの作動信号を入力させて、作動するように構成されている。   The inflator 14 supplies inflation gas to the airbag 19, and as shown in FIG. 1, a gas cylinder (not shown) capable of discharging inflation gas to the tip side as a cylinder type whose outer shape is substantially cylindrical. A discharge port is provided. The inflator 14 is inserted into a gas inlet portion 24 (to be described later) of the airbag 19 including the vicinity of the gas discharge port, and uses the clamp 17 mounted on the rear end 24a side of the gas inlet portion 24. The air bag 19 is connected. The inflator 14 is a center pillar in the inner panel 2 using a mounting bracket 15 for holding the inflator 14 and a bolt 16 for fixing the mounting bracket 15 to the inner panel 2 on the body (vehicle body) 1 side. It is attached at a position above the part CP. The inflator 14 is electrically connected to a control device (not shown) of the vehicle via a lead wire (not shown). When the control device detects a side collision of the vehicle V, the inflator 14 inputs an operation signal from the control device. And is configured to operate.

各取付ブラケット11は、2枚の板金製のプレートから構成されるもので、図2に示すように、エアバッグ19の後述する各取付部31を挟むようにして、各取付部31に取り付けられ、取付ボルト12と、インナパネル2の取付部位3に固着されるナット3aと、を利用して、各取付部31をボディ(車体)1側のインナパネル2に形成される取付部位3に、取付固定している。   Each mounting bracket 11 is composed of two sheet metal plates. As shown in FIG. 2, each mounting bracket 11 is attached to each mounting portion 31 so as to sandwich each mounting portion 31 described later of the airbag 19. Using the bolts 12 and the nuts 3a fixed to the attachment part 3 of the inner panel 2, each attachment part 31 is attached and fixed to the attachment part 3 formed on the inner panel 2 on the body (vehicle body) 1 side. doing.

エアバッグ19は、図1の二点鎖線及び図5に示すように、インフレーター14からの膨張用ガスを内部に流入させて、折り畳み状態から展開して、窓W1,W2や、窓W1,W2の間に配置されるセンターピラー部CPのピラーガーニッシュ6、及び、窓W2の後側に配置されるリヤピラー部RPのピラーガーニッシュ7の車内側を覆うように、展開膨張する構成とされている。エアバッグ19は、図3に示すように、膨張完了時に窓W1,W2の車内側を覆うように膨張する膨張遮蔽部20と、膨張遮蔽部20の上縁20a側において前後方向に沿って複数配設される取付部31と、を備える構成であり、膨張遮蔽部20は、膨張完了時に、窓W1からセンターピラー部CPを経てリヤピラー部RPの前側にかけての車内側を覆い可能に、膨張完了形状を、長手方向を前後方向に略沿わせた略長方形板状とされている。また、膨張遮蔽部20は、図5に示すように、上下の幅寸法を、座席に着座した乗員の頭部を保護可能として、かつ、下縁20bを、窓W1,W2の下縁から構成されるベルトラインBLより下方に位置させるような寸法に、設定されている。詳細には、膨張遮蔽部20は、後述する前席用膨張部26,後席用膨張部27の下縁を、ベルトラインBLより下方に位置させるように、構成されている。なお、実施形態の場合、膨張遮蔽部20は、エアバッグ19において、取付部31とガス流入口部24とを除いた領域から構成される。   As shown in the two-dot chain line in FIG. 1 and FIG. 5, the airbag 19 flows in the inflation gas from the inflator 14 and expands from the folded state, so that the windows W1 and W2 and the windows W1 and W2 are expanded. The pillar garnish 6 of the center pillar portion CP disposed between and the pillar garnish 7 of the rear pillar portion RP disposed on the rear side of the window W2 are configured to expand and expand so as to cover the inside of the vehicle. As shown in FIG. 3, the airbag 19 has a plurality of inflatable shielding portions 20 that inflate so as to cover the vehicle inner side of the windows W <b> 1 and W <b> 2 when inflation is completed, and a plurality of airbags 19 along the front-rear direction on the upper edge 20 a side of the inflating shielding portion 20. The expansion shielding part 20 can cover the vehicle interior from the window W1 through the center pillar part CP to the front side of the rear pillar part RP when the expansion is completed. The shape is a substantially rectangular plate whose longitudinal direction is substantially along the front-rear direction. Further, as shown in FIG. 5, the inflating shielding part 20 has an upper and lower width dimension that can protect the head of an occupant seated on the seat, and the lower edge 20 b is configured from the lower edges of the windows W <b> 1 and W <b> 2. The dimension is set so as to be positioned below the belt line BL. Specifically, the expansion shielding part 20 is configured such that lower edges of the front seat expansion part 26 and the rear seat expansion part 27 described later are positioned below the belt line BL. In the case of the embodiment, the expansion shielding part 20 is configured from an area of the airbag 19 excluding the attachment part 31 and the gas inlet part 24.

また、実施形態の場合、エアバッグ19は、ポリアミド糸やポリエステル糸等を使用した袋織りによって、製造されている。エアバッグ19は、図3に示すように、膨張完了時に車内側に位置する車内側壁部22aと車外側に位置する車外側壁部22bとを離すようにしてインフレーター14からの膨張用ガスを内部に流入させて膨張するガス流入部22と、膨張用ガスを流入させない非流入部29と、から構成されている。   In the case of the embodiment, the airbag 19 is manufactured by bag weaving using polyamide yarn, polyester yarn or the like. As shown in FIG. 3, the airbag 19 contains the inflation gas from the inflator 14 so as to separate the vehicle inner wall portion 22 a located on the vehicle inner side and the vehicle outer wall portion 22 b located on the vehicle outer side when inflation is completed. The gas inflow part 22 expand | swells by making it flow in, and the non-inflow part 29 which does not flow in the gas for expansion | swelling are comprised.

ガス流入部22は、実施形態の場合、膨張遮蔽部20におけるガス案内流路23及び保護膨張部25と、膨張遮蔽部20の上縁20a側から突出するように形成されるガス流入口部24と、を備えて構成されている。   In the case of the embodiment, the gas inflow portion 22 includes a gas guide channel 23 and a protective expansion portion 25 in the expansion shielding portion 20, and a gas inlet portion 24 formed so as to protrude from the upper edge 20 a side of the expansion shielding portion 20. And is configured.

ガス案内流路23は、図3に示すように、膨張遮蔽部20の上縁20a側において、前後方向に略沿って延びるように、前後の略全域にわたって配設されるもので、インフレーター14から吐出される膨張用ガスGを、ガス案内流路23の下方に配置される保護膨張部25の領域に、案内する構成である。実施形態の場合、ガス案内流路23における前後の中央付近には、インフレーター14と接続されるガス流入口部24が、ガス案内流路23と連通されて、ガス案内流路23(膨張遮蔽部20)から上方に突出するように、配設されている。実施形態の場合、ガス流入口部24は、ガス案内流路23に対して後上がりに傾斜して形成されて、後端24a側を、インフレーター14を挿入可能に開口させている。そして、ガス流入口部24は、インフレーター14に外装された状態で、クランプ17を利用して、インフレーター14に連結されることとなる。   As shown in FIG. 3, the gas guide channel 23 is disposed over substantially the entire front and rear so as to extend substantially along the front-rear direction on the upper edge 20 a side of the expansion shield 20. In this configuration, the discharged expansion gas G is guided to the area of the protective expansion portion 25 disposed below the gas guide channel 23. In the case of the embodiment, a gas inlet port 24 connected to the inflator 14 is communicated with the gas guide channel 23 in the vicinity of the center of the gas guide channel 23 in the front and rear directions. 20) so as to protrude upward from the above. In the case of the embodiment, the gas inflow port portion 24 is formed so as to be inclined rearwardly with respect to the gas guide channel 23, and the rear end 24a side is opened so that the inflator 14 can be inserted. And the gas inflow port part 24 will be connected with the inflator 14 using the clamp 17 in the state by which it was armored by the inflator 14.

保護膨張部25は、図3,5に示すように、前席の側方の窓W1の車内側を覆うように膨張する前席用膨張部26と、後席の側方の窓W2の車内側を覆うように膨張する後席用膨張部27とを備えている。各前席用膨張部26,後席用膨張部27は、内部領域を、後述する区画部32,33によって区画されて、膨張完了時の厚さを規制される構成とされるもので、区画部32,33により区画された複数の縦セル26a,26b,26c,26d,26e,27a,27bを、前後方向で並設させて構成されている。詳細には、前席用膨張部26は、5つの縦セル26a,26b,26c,26d,26eを前後方向で並設させて構成され、後席用膨張部27は、2つの縦セル27a,27bを前後方向で並設させて構成されている。なお、各縦セル26a,26b,26c,26d,26e,27a,27bは、エアバッグ19の膨張完了時に、それぞれ、略上下方向に沿った棒状に膨らむ構成である。   As shown in FIGS. 3 and 5, the protective inflating portion 25 includes a front seat inflating portion 26 that inflates so as to cover the inner side of the front seat side window W <b> 1 and a rear seat side window W <b> 2 vehicle. And a rear seat inflating portion 27 that inflates to cover the inside. Each of the front seat inflating portion 26 and the rear seat inflating portion 27 is configured such that the inner region is partitioned by partition portions 32 and 33 to be described later, and the thickness at the completion of the expansion is regulated. A plurality of vertical cells 26a, 26b, 26c, 26d, 26e, 27a, and 27b partitioned by the portions 32 and 33 are arranged in parallel in the front-rear direction. Specifically, the front seat inflating portion 26 is configured by arranging five vertical cells 26a, 26b, 26c, 26d, and 26e in parallel in the front-rear direction, and the rear seat inflating portion 27 includes two vertical cells 27a, 27b is arranged in parallel in the front-rear direction. Each of the vertical cells 26a, 26b, 26c, 26d, 26e, 27a, and 27b is configured to swell in a rod shape substantially along the vertical direction when the airbag 19 is completely inflated.

非流入部29は、取付部31と、膨張遮蔽部20を構成する周縁部30、区画部32,33、板状部34、及び、連結布35と、を備えて構成されている。周縁部30は、エアバッグ19の外周縁を構成するもので、ガス流入部22の周囲を囲むように、形成されている。取付部31は、エアバッグ19をボディ1側のインナパネル2における取付部位3に取り付けるための部位であり、膨張遮蔽部20の上縁20a側となる周縁部30から上方に突出するようにして、前後方向に沿って複数配置されている。実施形態の場合、取付部31は、5個配置されている。各取付部31には、取付ボルト12を挿通可能な取付孔(図符号省略)が、形成されている。   The non-inflow portion 29 includes an attachment portion 31, a peripheral edge portion 30, partition portions 32 and 33, a plate-like portion 34, and a connecting cloth 35 that constitute the expansion shielding portion 20. The peripheral edge portion 30 constitutes the outer peripheral edge of the airbag 19 and is formed so as to surround the gas inflow portion 22. The attachment portion 31 is a portion for attaching the airbag 19 to the attachment portion 3 in the inner panel 2 on the body 1 side, and protrudes upward from the peripheral edge portion 30 on the upper edge 20a side of the expansion shielding portion 20. A plurality are arranged along the front-rear direction. In the case of the embodiment, five mounting portions 31 are arranged. Each mounting portion 31 is formed with a mounting hole (not shown) through which the mounting bolt 12 can be inserted.

区画部32,33は、前席用膨張部26及び後席用膨張部27の領域内に、それぞれ、配置されるもので、各前席用膨張部26,後席用膨張部27の内部領域を、複数の縦セル26a,26b,26c,26d,26e,27a,27bに区画する部位である。区画部32A,32B,32C,32Dは、周縁部30の下縁側から上方に延びるように形成され、区画部33は、板状部34の上部前端から前下方に延びるように形成されている。板状部34は、略長方形板状として、前席用膨張部26と後席用膨張部27との間においてガス案内流路23の下方に、配置されている。連結布35は、エアバッグ19の前端側に縫着されるもので、先端側に、取付部31と同様に、ボディ1側のインナパネル2に取り付けられる取付片部35aを有している。   The partition portions 32 and 33 are respectively arranged in the regions of the front seat inflating portion 26 and the rear seat inflating portion 27, and the inner regions of the front seat inflating portion 26 and the rear seat inflating portion 27. Is a portion that divides the vertical cell 26a, 26b, 26c, 26d, 26e, 27a, 27b. The partition portions 32A, 32B, 32C, and 32D are formed so as to extend upward from the lower edge side of the peripheral portion 30, and the partition portion 33 is formed so as to extend forward and downward from the upper front end of the plate-like portion 34. The plate-like portion 34 has a substantially rectangular plate shape and is disposed below the gas guide channel 23 between the front seat inflating portion 26 and the rear seat inflating portion 27. The connecting cloth 35 is sewn to the front end side of the airbag 19, and has a mounting piece portion 35 a that is attached to the inner panel 2 on the body 1 side on the tip side, similarly to the mounting portion 31.

そして、実施形態のエアバッグ19では、膨張遮蔽部20を平らに展開した状態において、前席用膨張部26の領域内である隣接する取付部31A,31B間の前後の離隔距離L1(図3参照)が、インナパネル2において取付部31A,31Bを取り付ける取付部位3A,3Bの離隔距離L2(参照)よりも、大きく設定されている。詳細には、実施形態の場合、前席の略直上となる位置に取り付けられる取付部31Bと、取付部31Bの前側で隣接する取付部31Aと、の離隔距離L1が、取付部31A,31Bを取り付ける取付部位3A,3Bの離隔距離L2より、大きく設定されている。厳密には、取付部31A,31Bは、前後方向に略沿って、エアバッグ19(膨張遮蔽部20)の下縁20bと略平行に並設されている。そして、取付部31A,31B間の離隔距離L1は、各取付部31A,31Bに形成される取付孔(図符号省略)の中心間の離隔距離であり、取付部位3A,3B間の離隔距離L2は、取付部位3A,3Bに配置されるナット3aの中心間の離隔距離である。また、取付部位3A,3Bは、車両VにおけるベルトラインBLに略沿って、ベルトラインBLと略平行に、配置されている。この取付部31A,31Bの離隔距離L1は、エアバッグ19の膨張完了時に、膨張遮蔽部20の前席用膨張部26の領域内において、取付部31A,31B間の部位を、車幅方向側(左右方向側、車内外方向側)で蛇行させるような距離に設定されるもので、実施形態の場合、取付部位3A,3B間の離隔距離の1.7倍程度に設定されている。   In the airbag 19 of the embodiment, the front-rear separation distance L1 (see FIG. 3) between the adjacent attachment portions 31A and 31B in the region of the front seat inflating portion 26 in a state where the inflating shielding portion 20 is flatly deployed. Is set larger than the separation distance L2 (reference) of the attachment portions 3A and 3B to which the attachment portions 31A and 31B are attached in the inner panel 2. Specifically, in the case of the embodiment, the separation distance L1 between the attachment portion 31B attached at a position almost directly above the front seat and the attachment portion 31A adjacent on the front side of the attachment portion 31B determines the attachment portions 31A and 31B. It is set larger than the separation distance L2 of the attachment parts 3A and 3B to be attached. Strictly speaking, the attachment portions 31A and 31B are arranged substantially in parallel with the lower edge 20b of the airbag 19 (expansion shielding portion 20) substantially along the front-rear direction. The separation distance L1 between the attachment portions 31A and 31B is the separation distance between the centers of attachment holes (not shown) formed in the attachment portions 31A and 31B, and the separation distance L2 between the attachment portions 3A and 3B. Is a separation distance between the centers of the nuts 3a arranged in the attachment parts 3A and 3B. Further, the attachment parts 3A and 3B are arranged substantially along the belt line BL in the vehicle V and substantially parallel to the belt line BL. The separation distance L1 between the attachment portions 31A and 31B is such that the portion between the attachment portions 31A and 31B is located on the vehicle width direction side in the region of the front seat inflating portion 26 of the inflating shielding portion 20 when the airbag 19 is completely inflated. The distance is set so as to meander in the (right and left direction side, inward and outward direction side), and in the case of the embodiment, it is set to about 1.7 times the separation distance between the attachment parts 3A and 3B.

そして、実施形態では、エアバッグ19は、取付部31A,31B間の離隔距離を取付部位3A,3B間の離隔距離に対応させるように、膨張遮蔽部20における取付部31A,31Bの部位に、上下方向に略沿った折目C1,C2を付けて、取付部31A,31B間の領域の前後方向の幅寸法を縮めるように折り畳んだ後、上下方向の幅寸法を縮めるように折り畳まれることとなる。この取付部31A,31B間の領域の前後方向の幅寸法を縮めるような折り畳み時には、エアバッグ19は、折り畳み状態を、エアバッグ19の膨張完了時に、平らに展開すれば前後方向の幅寸法を折り畳み前の状態に復元可能とする状態として、折り畳まれることとなる。実施形態の場合、取付部31A,31B間の領域は、取付部31A,31B間の前後の略中央において前後で並設され、かつ、それぞれ、上下方向に略沿って形成される2本の折目C1,C2によって、前後方向の幅寸法を縮めるように折り畳まれることとなる。さらに詳細には、実施形態では、前側の折目C1は、縦セル26bの領域内に形成され、後側の折目C2は、縦セル26b,26cを区画している区画部32B上に形成されており、取付部31A,31B間の領域は、前側の折目C1を車外側Oに位置させ、後側の折目C2を車内側Iに位置させるように、部分的に蛇腹折りされている(図4参照)。そして、実施形態のエアバッグ19の膨張遮蔽部20では、前後方向の幅寸法を縮めるように折り畳まれる取付部31A,31B間の領域(縦セル26b,26c)は、エアバッグ19の膨張完了時に、上縁20a側の領域に襞を寄せられるような状態で、前後で収縮されるようにして、配置されることとなる。そして、この取付部31A,31B間の領域の襞を寄せられたような状態は、下縁20b側まで連続的に配置されることとなって、この取付部31A,31B間の領域は、エアバッグ19の膨張完了時に、縦セル26b,26cを、車幅方向側(左右方向側、車内外方向側)で蛇行させるようにして、前席用膨張部26,後席用膨張部27における他の領域からなる一般膨張部37よりも厚肉の厚肉膨張部38を構成することとなる。 Then, in the embodiment, the airbag 19, mounting portion 31A, the separation distance of the mounting portion 3A among 31B, as to correspond to the separation between 3B, mounting portion 31A in the inflatable protective shielding part 20, the region between the 31B Folding is performed so as to reduce the width dimension in the up-down direction after folding the C-C1 and C2 along the up-down direction so as to reduce the width dimension in the front-rear direction of the region between the attachment portions 31A, 31B. It becomes. When the airbag 19 is folded to reduce the width dimension in the front-rear direction of the region between the attachment portions 31A, 31B, the airbag 19 can be folded in the folded state when the airbag 19 is completely inflated. It will be folded as a state which can be restored to the state before folding. In the case of the embodiment, the region between the attachment portions 31A and 31B is two folds that are arranged in parallel at the front and rear in the approximate center between the attachment portions 31A and 31B and are formed substantially along the vertical direction. The eyes C1 and C2 are folded so as to reduce the width dimension in the front-rear direction. More specifically, in the embodiment, the front fold C1 is formed in the region of the vertical cell 26b, and the rear fold C2 is formed on the partition portion 32B that partitions the vertical cells 26b and 26c. The region between the attachment portions 31A and 31B is partially bellows folded so that the front fold C1 is positioned on the vehicle outer side O and the rear fold C2 is positioned on the vehicle inner side I. (See FIG. 4). And in the expansion | swelling shielding part 20 of the airbag 19 of embodiment, the area | region (vertical cell 26b, 26c) between the attachment parts 31A and 31B folded so that the width dimension of the front-back direction may be shrunk | reduced In such a state that the wrinkle is brought close to the region on the upper edge 20a side, it is arranged so as to be contracted back and forth. And the state where the wrinkle of the area | region between this attaching part 31A, 31B was brought close is arrange | positioned continuously to the lower edge 20b side, and the area | region between this attaching part 31A, 31B is air. When the expansion of the bag 19 is completed, the vertical cells 26b and 26c are meandered in the vehicle width direction side (left and right direction side, inward and outward direction side), and the like in the front seat expansion portion 26 and the rear seat expansion portion 27. Thus, a thick-walled inflatable portion 38 that is thicker than the general inflatable portion 37 consisting of the above region is formed.

次に、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をする。まず、車内側壁部22aと車外側壁部22bとを重ねて平らに展開した状態のエアバッグ19の膨張遮蔽部20において、取付部31A,31Bの間の領域を、上下方向に沿った折目C1,C2の部位で蛇腹折りして、膨張遮蔽部20全体の前後方向の幅寸法を縮めるように折り畳んで、予備折りする(図4参照)。図4に示す予備折りされたエアバッグ40では、取付部31A,31B間の離隔距離L3(図4参照)は、取付部位3A,3B間の離隔距離L2と略一致することとなる。その後、予備折りされたエアバッグ40を、上下方向の幅寸法を縮めるように折り畳む。実施形態では、具体的には、予備折りされたエアバッグ40において、膨張遮蔽部20における上縁20a近傍の領域であるガス案内流路23の領域を、前後方向に沿った複数の折目を付けて蛇腹折りするとともに、ガス案内流路23より下方となる前席用膨張部26と後席用膨張部27との領域を、下縁20b側を車外側に向かって巻くようにロール折りして、エアバッグ19を折り畳んでいる。そして、このエアバッグ19の折り畳み完了後には、破断可能な図示しない折り崩れ防止用のラッピング材により、所定箇所をくるんでおく。   Next, mounting of the head protection airbag device M of the embodiment on the vehicle V will be described. First, in the inflating shielding part 20 of the airbag 19 in a state in which the vehicle inner wall part 22a and the vehicle outer wall part 22b are overlapped and flattened, the region between the attachment parts 31A and 31B is folded along the vertical direction. The bellows are folded at the portions C1 and C2, and are folded so as to reduce the width dimension in the front-rear direction of the entire inflating shielding portion 20, and are preliminarily folded (see FIG. 4). In the pre-folded airbag 40 shown in FIG. 4, the separation distance L3 (see FIG. 4) between the attachment portions 31A and 31B substantially coincides with the separation distance L2 between the attachment portions 3A and 3B. Thereafter, the pre-folded airbag 40 is folded so as to reduce the width in the vertical direction. In the embodiment, specifically, in the pre-folded airbag 40, a region of the gas guide channel 23 that is a region in the vicinity of the upper edge 20a in the inflating shielding part 20 is divided into a plurality of folds along the front-rear direction. At the same time, the bellows is folded, and the region of the front seat inflating portion 26 and the rear seat inflating portion 27 below the gas guide passage 23 is rolled so that the lower edge 20b side is wound outward. The airbag 19 is folded. Then, after the folding of the airbag 19 is completed, a predetermined portion is wrapped with a wrapping material (not shown) that can be broken to prevent it from collapsing.

その後、取付ブラケット15を取付済みのインフレーター14を、クランプ17を利用して、エアバッグ19のガス流入口部24と接続させ、エアバッグ19の各取付部31に、取付ブラケット11を固着させて、エアバッグ組付体を形成する。   Thereafter, the inflator 14 to which the mounting bracket 15 has been attached is connected to the gas inlet portion 24 of the airbag 19 by using the clamp 17, and the mounting bracket 11 is fixed to each mounting portion 31 of the airbag 19. The airbag assembly is formed.

次いで、取付ブラケット15を、ボディ1側のインナパネル2の所定位置に配置させ、ボルト16止めして、インフレーター14をインナパネル2に固定するとともに、各取付部31を、取付ブラケット11ごと、インナパネル2に形成される取付部位3に取り付ければ、エアバッグ組付体をボディ1に取り付けることができる。そして、インフレーター14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、センターピラーガーニッシュ6やリヤピラーガーニッシュ7をボディ1に取り付ければ、頭部保護エアバッグ装置Mを車両に搭載することができる。   Next, the mounting bracket 15 is disposed at a predetermined position of the inner panel 2 on the body 1 side, is fastened with a bolt 16, and fixes the inflator 14 to the inner panel 2. If attached to the attachment part 3 formed on the panel 2, the airbag assembly can be attached to the body 1. Then, a lead wire (not shown) extending from a predetermined control device for inflator operation is connected to the inflator 14, the front pillar garnish 4 and the roof head lining 5 are attached to the body 1, and the center pillar garnish 6 and the rear pillar garnish 7 are attached. If attached to the body 1, the head protection airbag device M can be mounted on the vehicle.

そして、頭部保護エアバッグ装置Mの車両Vへの搭載後において、車両Vの側面衝突時、制御装置からの作動信号を受けてインフレーター14が作動されれば、インフレーター14から吐出される膨張用ガスGが、エアバッグ19の膨張遮蔽部20内に流入して、膨張する膨張遮蔽部20が、図示しないラッピング材を破断させ、さらに、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との下縁で構成されるエアバッグカバー9を押し開いて、下方へ突出しつつ、図1の二点鎖線及び図5に示すごとく、窓W1,W2、センターピラー部CP、及び、リヤピラー部RPの車内側を覆うように、大きく膨張することとなる。   Then, after the head protection airbag device M is mounted on the vehicle V, if the inflator 14 is actuated in response to an actuation signal from the control device at the time of a side collision of the vehicle V, the inflator 14 is inflated. The gas G flows into the inflating shielding part 20 of the airbag 19 and the inflating inflating shielding part 20 breaks the wrapping material (not shown), and further, at the lower edges of the front pillar garnish 4 and the roof head lining 5. Pushing and opening the air bag cover 9 configured to protrude downward, as shown in the two-dot chain line of FIG. 1 and FIG. 5, covers the vehicle inner side of the windows W1 and W2, the center pillar portion CP, and the rear pillar portion RP. As shown in FIG.

そして、実施形態の頭部保護エアバッグ装置Mでは、エアバッグ19が、平らに展開した状態で、所定の隣接する取付部31A,31B間の前後の離隔距離L1を、これらの取付部31A,31Bを取り付けるための車体(ボディ1)側のインナパネル2における取付部位3A,3B間の離隔距離L2よりも大きく設定することにより、エアバッグ19の膨張完了時に、膨張遮蔽部20において、隣接する取付部31A,31B間の部位(実施形態の場合、前席用膨張部26における縦セル26b,26cの領域)を、図6に示すように、車幅方向側(左右方向側)で蛇行させるようにして、膨張遮蔽部20における他の領域(一般膨張部37)より車幅方向側(左右方向側)の実質的な幅寸法を大きくして、厚く膨張させることができる。すなわち、実施形態の頭部保護エアバッグ装置Mでは、膨張遮蔽部20を、厚く膨張させたい領域の上方に配置される取付部31A,31B間の離隔距離を大きくするように、設定するだけで、任意の箇所を、厚肉膨張部として、膨張完了時の実質的な厚さを厚くすることができることから、容積の増大を極力抑制して、所定箇所を実質的に厚く膨張させることができる。なお、図6に、従来のエアバッグの膨張完了時の前後方向に沿った概略断面を二点鎖線で示すが、この二点鎖線で示すエアバッグと比較して、実施形態の頭部保護エアバッグ装置Mでは、エアバッグ19の膨張遮蔽部20における取付部31A,31B間の部位(厚肉膨張部38)を、厚く膨張させることができる。   In the head protection airbag device M according to the embodiment, the front and rear separation distance L1 between the predetermined adjacent attachment portions 31A and 31B is set to the attachment portions 31A, 31B in a state where the airbag 19 is flatly deployed. By setting it larger than the separation distance L2 between the attachment portions 3A and 3B of the inner panel 2 on the vehicle body (body 1) side for attaching 31B, the airbag 19 is adjacent in the expansion shielding portion 20 when the inflation of the airbag 19 is completed. A portion between the attachment portions 31A and 31B (in the case of the embodiment, the vertical cells 26b and 26c in the front seat inflating portion 26) meander on the vehicle width direction side (left and right direction side) as shown in FIG. In this manner, the substantial width dimension on the vehicle width direction side (left and right direction side) can be made larger than the other region (general expansion portion 37) in the expansion shielding portion 20 to inflate it thickly. That is, in the head protection airbag device M according to the embodiment, the expansion shielding part 20 is simply set so as to increase the separation distance between the attachment parts 31A and 31B disposed above the region where it is desired to be thickly inflated. Since the substantial thickness at the completion of the expansion can be increased by using any portion as the thick-walled expansion portion, the increase in the volume can be suppressed as much as possible, and the predetermined portion can be expanded substantially thickly. . FIG. 6 shows a schematic cross-section along the front-rear direction when the conventional airbag is completely inflated, which is indicated by a two-dot chain line. Compared to the airbag indicated by the two-dot chain line, the head protection air according to the embodiment is shown in FIG. In the bag apparatus M, the site | part (thick-walled expansion part 38) between the attachment parts 31A and 31B in the expansion | swelling shielding part 20 of the airbag 19 can be expanded thickly.

したがって、実施形態の頭部保護エアバッグ装置Mでは、容積の増大を抑制して、かつ、エアバッグ19の所定の箇所を厚く膨張させることができて、乗員をクッション性よく受け止めることができる。   Therefore, in the head protection airbag device M of the embodiment, an increase in volume can be suppressed, and a predetermined portion of the airbag 19 can be inflated thickly, so that an occupant can be received with good cushioning properties.

特に、実施形態の頭部保護エアバッグ装置Mでは、図5に示すように、エアバッグ19の膨張完了時に、膨張遮蔽部20の下縁20b側が、窓W1,W2の下縁から構成されるベルトラインBLより下方に位置している。詳細には、前席用膨張部26,後席用膨張部27を構成する各縦セル26a,26b,26c,26d,26e,27a,27bが、下縁を、ベルトラインBLより下方に位置させるように構成されている。そのため、側面衝突後のロールオーバー時にも、膨張遮蔽部20の下縁20b側の車外側を、前後の略全域にわたって、ベルトラインBLにより安定して支持させることができて、乗員の車外側への移動を抑えて車内側に拘束することができ、かつ、厚く膨張した縦セル26b,26cの領域により、乗員の頭部を、クッション性を良好として、的確に保護することができる。   In particular, in the head protection airbag device M according to the embodiment, as shown in FIG. 5, when the airbag 19 is completely inflated, the lower edge 20 b side of the expansion shielding portion 20 is configured from the lower edges of the windows W <b> 1 and W <b> 2. It is located below the belt line BL. Specifically, the vertical cells 26a, 26b, 26c, 26d, 26e, 27a, and 27b constituting the front seat inflating portion 26 and the rear seat inflating portion 27 have their lower edges positioned below the belt line BL. It is configured as follows. Therefore, even at the time of a rollover after a side collision, the vehicle outer side on the lower edge 20b side of the expansion shielding part 20 can be stably supported by the belt line BL over substantially the entire front and rear, and to the passenger's vehicle outer side The movement of the vehicle can be restrained to the inside of the vehicle, and the occupant's head can be properly protected with good cushioning properties by the thickly expanded regions of the vertical cells 26b and 26c.

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19を予備折りする折目C2を、厚肉膨張部38を構成する縦セル26b,26c間を区画する区画部32B上に配置させている。そのため、エアバッグ19の膨張完了時に、区画部32Bが、縦セル26b,26c間を屈曲して配置させる起点となって、縦セル26b,26cの屈曲状態を維持しやすい。   Further, in the head protecting airbag device M of the embodiment, the fold C2 for pre-folding the airbag 19 is arranged on the partition portion 32B that partitions the vertical cells 26b, 26c constituting the thick-walled inflating portion 38. ing. Therefore, when the inflation of the airbag 19 is completed, the partition portion 32B becomes a starting point for bending and arranging the vertical cells 26b and 26c, and the bent state of the vertical cells 26b and 26c is easily maintained.

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19を、膨張遮蔽部20を平らに展開した状態で、取付部31A,31B間の領域の前後方向の幅寸法を縮めるように、上下方向に略沿った折目C1,C2を上下の幅寸法の全域にわたって付けて、折り畳んだ後、上下方向の幅寸法を縮めるように折り畳んで収納させている。そのため、上下方向の幅寸法を縮めた後に前後方向の幅寸法を縮めるように折り畳む場合と比較して、エアバッグ19を折り畳んで形成される折り完了体に、部分的に大きく嵩張る領域が生じ難く、エアバッグ19をコンパクトに折り畳むことができる。勿論、このような点を考慮しなければ、膨張遮蔽部を、上下方向の幅寸法を縮めるように折り畳んだ後に、前後方向の幅寸法を縮めるように折り畳むようにしてもよい。なお、実施形態では、二本の折目C1,C2をつけて膨張遮蔽部20における取付部31A,31B間の領域の一部を蛇腹折りするように、予備折りしているが、予備折り形状は実施形態に限られるものではなく、3本以上の折目をつけるようにして予備折りしてもよい。   Further, in the head protection airbag device M of the embodiment, the airbag 19 is configured so that the width dimension in the front-rear direction of the region between the attachment portions 31A and 31B is reduced in a state where the expansion shielding portion 20 is flatly deployed. The creases C1 and C2 that are substantially along the vertical direction are provided over the entire area of the vertical width dimension, folded, and then folded and stored so as to reduce the vertical width dimension. Therefore, compared with the case where the airbag 19 is folded so that the width dimension in the front-rear direction is reduced after the width dimension in the up-down direction is reduced, a region that is partially large and less bulky is less likely to occur. The airbag 19 can be folded compactly. Of course, if such a point is not taken into consideration, the expansion shield may be folded so as to reduce the width dimension in the front-rear direction after being folded so as to reduce the width dimension in the vertical direction. In the embodiment, the two folding lines C1 and C2 are attached, and the part of the region between the attachment parts 31A and 31B in the expansion shielding part 20 is preliminarily folded so as to be bellows folded. Is not limited to the embodiment, and may be pre-folded by making three or more creases.

なお、実施形態では、予備折り前の状態において、取付部31A,31B間の離隔距離L1を、対応する取付部位3A,3B間の離隔距離L2の1.7倍程度に設定しているが、この数値は実施形態に限られるものではなく、エアバッグ19の膨張完了時における厚肉膨張部38の厚さにより、任意に設定可能である。また、実施形態のエアバッグ19では、膨張完了時に厚肉となる厚肉膨張部38を、前席用膨張部26の一部の領域である1箇所のみに、形成しているが、厚肉膨張部の配置数(取付部間の離隔距離を大きくする部位の数)は、1つに限られるものではなく、1つのエアバッグに複数形成する構成としてもよい。   In the embodiment, the separation distance L1 between the attachment portions 31A and 31B is set to about 1.7 times the separation distance L2 between the corresponding attachment portions 3A and 3B in the state before the preliminary folding. This numerical value is not limited to the embodiment, and can be arbitrarily set depending on the thickness of the thick inflated portion 38 when the airbag 19 is completely inflated. Further, in the airbag 19 of the embodiment, the thick inflated portion 38 that is thick when the inflation is completed is formed in only one place, which is a partial region of the front seat inflating portion 26. The number of inflatable portions arranged (the number of portions that increase the separation distance between the attachment portions) is not limited to one, and a plurality of inflatable portions may be formed in one airbag.

1…ボディ(車体)、
2…インナパネル、
3(3A,3B)…取付部位、
9…エアバッグカバー、
11…取付ブラケット、
14…インフレーター、
19…エアバッグ、
20…膨張遮蔽部、
20a…上縁、
20b…下縁、
31(31A,31B)…取付部、
V…車両、
W1,W2…窓、
M…頭部保護エアバッグ装置。
1 ... Body
2 ... Inner panel,
3 (3A, 3B) ... attachment site,
9 ... Airbag cover,
11 ... Mounting bracket,
14 ... Inflator,
19 ... Airbag,
20 ... inflatable shield,
20a ... upper edge,
20b ... lower edge,
31 (31A, 31B) ... mounting portion,
V ... Vehicle,
W1, W2 ... windows,
M: Head protection airbag device.

Claims (3)

窓の車内側における上縁側に折り畳まれて収納されるエアバッグを備え、
該エアバッグが、内部に膨張用ガスを流入させて前記窓の車内側を覆うように展開膨張する膨張遮蔽部と、該膨張遮蔽部の上縁側において前後方向に沿って複数配置される取付部と、を備える構成として、該取付部を、前記窓の上縁側の車体側の取付部位に取り付けることにより、前記車体側に取り付けられる構成と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、
前記膨張遮蔽部を平らに展開した状態において、隣接する前記取付部間の前後の離隔距離を、対応する前記取付部位間の離隔距離よりも大きく設定されるとともに、前記エアバッグの膨張完了時に前記膨張遮蔽部における前記取付部間の領域を車幅方向側で蛇行させるような距離に設定され
前記膨張遮蔽部を平らに展開した状態で、
前記エアバッグの膨張完了時に車幅方向側で蛇行させる部位において、前記取付部間の離隔距離を、対応する前記取付部位間の離隔距離に対応させるように、上下方向に略沿った折目を付けて、前記取付部間の領域の前後方向の幅寸法を縮めて折り畳むとともに、折り畳み状態を、前記エアバッグの膨張完了時に、平らに展開すれば前後方向の幅寸法を折り畳み前の状態に復元可能とする状態として、折り畳み、さらに、
上下方向の幅寸法を縮めるように折り畳まれて、
収納されていることを特徴とする頭部保護エアバッグ装置。
It has an airbag that is folded and stored on the upper edge of the window inside the car,
The airbag is inflated and inflated so that the inflation gas flows into the interior of the airbag and covers the inside of the window, and a plurality of mounting portions arranged along the front-rear direction on the upper edge side of the inflation shield A head protection airbag device configured to be attached to the vehicle body side by attaching the attachment portion to the vehicle body side attachment portion on the upper edge side of the window,
The airbag is
Wherein in a state where the said inflation shielding portion flattened and the longitudinal separation distance between the mounting portion adjacent, is set larger than the distance between said corresponding attachment site Rutotomoni, upon completion of inflation of the air bag is set an area between the mounting portion of the inflatable protective shielding part at a distance such as to meander in a vehicle width direction,
In a state where the expansion shielding portion is flatly developed,
When the airbag is completely inflated, the folds substantially along the vertical direction are arranged so that the separation distance between the attachment portions corresponds to the separation distance between the corresponding attachment portions in a portion meandering in the vehicle width direction. At the same time, the width dimension in the front-rear direction of the region between the mounting parts is reduced and folded, and the folded state is restored to the state before folding when the airbag is flattened when the airbag is completely inflated. As a possible state, it can be folded,
Folded to reduce the vertical width,
A head protection airbag device that is housed .
前記エアバッグが、前記エアバッグの膨張完了時に車幅方向側で蛇行させる部位における前後方向の幅寸法を縮めるような折り畳み時に、少なくとも2本の折目を付けて折り畳まれるとともに、前記膨張遮蔽部を平らに展開した状態において後側に位置する折目を、車内側に位置させるように、折り畳ま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装置。The airbag is folded with at least two folds when folded so as to reduce the width dimension in the front-rear direction at a portion to be meandered in the vehicle width direction when the airbag is completely inflated, and the inflation shielding portion The head protection airbag device according to claim 1, wherein the head protection airbag device is folded so that a fold located on the rear side in a state where the bag is deployed flat is located on the vehicle inner side. 前記エアバッグは、膨張完了時に車内側に位置する車内側壁部と車外側に位置する車外側壁部とを離すようにして前記インフレーターからの膨張用ガスを内部に流入させて膨張するガス流入部と、前記膨張用ガスを流入させない非流入部と、から構成され、The air bag is inflated by inflating the inflation gas from the inflator so as to separate the vehicle interior side wall portion located on the vehicle interior side and the vehicle exterior wall portion located on the vehicle exterior side when the inflation is completed. And a non-inflow portion that does not allow the expansion gas to flow in, and
該非流入部が、前記膨張遮蔽部の領域内に配置されて、前記膨張遮蔽部の内部領域を区画するように、上下方向に略沿って配置される区画部を、備える構成とされ、The non-inflow portion is disposed in the region of the expansion shielding portion, and is configured to include a partition portion disposed substantially along the vertical direction so as to partition the inner region of the expansion shielding portion.
前記エアバッグの膨張完了時に車幅方向側で蛇行させる部位における前後方向の幅寸法を縮めるような折り畳み時の後側に位置する折目が、前記区画部上に、形成されていることを特徴とする請求項2に記載の頭部保護エアバッグ装置。A fold located on the rear side when folded so as to reduce the width dimension in the front-rear direction at a portion to be meandered on the vehicle width direction side when the inflation of the airbag is completed is formed on the partition portion. The head protection airbag device according to claim 2.
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