JP5627398B2 - Curtain airbag - Google Patents

Curtain airbag Download PDF

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JP5627398B2
JP5627398B2 JP2010247711A JP2010247711A JP5627398B2 JP 5627398 B2 JP5627398 B2 JP 5627398B2 JP 2010247711 A JP2010247711 A JP 2010247711A JP 2010247711 A JP2010247711 A JP 2010247711A JP 5627398 B2 JP5627398 B2 JP 5627398B2
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airbag
air chamber
reinforcing
gas
inflating
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JP2012096729A (en
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寛行 岩本
寛行 岩本
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Nihon Plast Co Ltd
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Nihon Plast Co Ltd
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Description

本発明は、例えば、自動車の車室の側部の窓部に沿って展開するカーテンエアバッグに関する。 The present invention is, for example, relates to curtain airbags to deploy along the window portion of the vehicle compartment side of the vehicle.

従来、ガスを導入して膨張展開するエアバッグについて、自動車の車室の側部のドアの窓部などに沿ってエアバッグを展開するいわゆるカーテンエアバッグが知られている。このエアバッグは、袋状をなしガスが導入されて膨張展開する膨張部と、この膨張部から突設された複数の取付片とを備えている。そして、通常時は、膨張部は細長く折り畳まれて車室の側部の窓部の上縁部に沿って配置され、各取付片はリベットなどにより車体の固定点に固定されている。そして、側面衝突や横転(ロールオーバ)などの衝撃を受けた際に、インフレータから膨張部にガスが供給されてこの膨張部が下方に展開し、側部の窓部やピラーなどを覆って乗員を保護する。   2. Description of the Related Art Conventionally, as an airbag that inflates and deploys by introducing gas, a so-called curtain airbag is known in which an airbag is deployed along a window portion of a door on a side portion of a vehicle compartment. This airbag has a bag-like shape and includes an inflating portion that is inflated and deployed by introducing a gas, and a plurality of attachment pieces that protrude from the inflating portion. In the normal state, the inflatable portion is elongated and disposed along the upper edge portion of the window portion on the side of the passenger compartment, and each attachment piece is fixed to a fixed point of the vehicle body by a rivet or the like. When an impact such as a side collision or rollover occurs, gas is supplied from the inflator to the inflatable portion, and the inflatable portion expands downward, covering the side windows and pillars, etc. Protect.

ここで、取付片は、膨張部を構成する基布から突設された形状であるため、基布を原反から切り出す際に無駄が生じ、製造コストの低減の妨げとなる。また、取付片の部分はガスが導入されないいわば非膨張部であり、柔軟に変形可能であるため、車体の固定点に対して展開過程あるいは展開後において膨張部の位置を規制する効果は小さく、エアバッグの揺れを抑制して位置を安定させるために複数のストラップや別体の案内部材を設けると、製造コストが上昇する。   Here, since the attachment piece has a shape protruding from the base fabric constituting the inflating portion, waste is generated when the base fabric is cut out from the original fabric, which hinders reduction in manufacturing cost. In addition, since the part of the mounting piece is a non-inflatable part where gas is not introduced and can be flexibly deformed, the effect of restricting the position of the inflating part after the deployment process or after deployment with respect to the fixed point of the vehicle body is small, If a plurality of straps or separate guide members are provided in order to stabilize the position by suppressing the shaking of the airbag, the manufacturing cost increases.

ここで、膨張部に切り込みを入れて折り返すことにより、長手寸法の大きい連結部を形成する構成が知られている(例えば、特許文献1参照)。   Here, a configuration is known in which a connecting portion having a large longitudinal dimension is formed by cutting and expanding the inflatable portion (see, for example, Patent Document 1).

しかしながら、この構成においても、複数の連結片が存在し、この部分で基布に無駄が生じやすく、製造コストの低減の妨げとなる。また、取付片及び連結部は展開過程あるいは展開後の膨張部の回転を抑制して位置を規制する効果は小さく、多数の取付片や連結部、あるいは別体の案内部材を設けると、製造コストが上昇する。   However, even in this configuration, there are a plurality of connecting pieces, and the base fabric tends to be wasted at this portion, which hinders the reduction of the manufacturing cost. In addition, the mounting piece and the connecting portion have little effect of restricting the position by suppressing the rotation of the expanding portion after the deployment process or after deployment, and if a large number of mounting pieces, the connecting portion, or separate guide members are provided, the manufacturing cost is reduced. Rises.

特開2007−62474号公報 (第1頁、図2)JP 2007-624474 A (first page, FIG. 2)

上記のように、膨張部から突設された取付片を車体の固定点に固定する構成では、基布に無駄が生じやすく、製造コストの低減の妨げとなるとともに、車体の固定点に対して膨張部の位置を規制する効果は小さく、エアバッグの回転を抑制して位置を安定させるために複数のストラップや別体の案内部材を設けると、製造コストが上昇する。   As described above, in the configuration in which the mounting piece projecting from the inflating portion is fixed to the fixing point of the vehicle body, the base fabric is likely to be wasted, which hinders the reduction of the manufacturing cost, and against the fixing point of the vehicle body. The effect of restricting the position of the inflatable portion is small, and if a plurality of straps or separate guide members are provided to suppress the rotation of the airbag and stabilize the position, the manufacturing cost increases.

本発明は、このような点に鑑みなされたもので、展開過程及び展開後のカーテンエアバッグの挙動を安定させることができるカーテンエアバッグを提供することを目的とする。 The present invention has been made in view of the above problems, and an object thereof is to provide a curtain airbags which can stabilize the behavior of the curtain airbag after deployment process and development.

請求項1記載のカーテンエアバッグは、被取付部に取り付けられ折り畳まれた状態からガスが導入されて自動車の車室内で膨張展開するエアバッグ本体部を備えたカーテンエアバッグであって、前記エアバッグ本体部は、互いに重ねられた基布部及びこの基布部同士の間に設けられた気室を有し、この気室にガスが導入され所定面に沿って所定方向に膨張展開する膨張部と、この膨張部の展開方向に対して前記エアバッグ本体部の後方の縁部に連続して設けられ、前記基布部が互いに密着して前記被取付部に取り付けられる取付部と、前記展開方向に対して前記取付部の両側方及び前方を囲んで設けられた補強気室を有し、この補強気室にガスが導入されて膨張展開する補強膨張部とを具備したものである。 Curtain airbag according to claim 1 is a curtain airbag that includes an airbag body portion is inflated and deployed introduces gas from a folded state mounted on the mounting portion in the passenger compartment of a motor vehicle, the air The bag body portion has a base fabric portion stacked on top of each other and an air chamber provided between the base fabric portions, and an inflation that expands and expands in a predetermined direction along a predetermined surface when gas is introduced into the air chamber. A mounting portion that is provided continuously to the rear edge portion of the airbag main body portion with respect to the deployment direction of the inflatable portion, and the base cloth portions are attached to the attached portion in close contact with each other; A reinforcing air chamber is provided that surrounds both sides and the front of the mounting portion with respect to the developing direction, and includes a reinforcing inflating portion that expands and expands when gas is introduced into the reinforcing air chamber.

請求項2記載のカーテンエアバッグは、請求項1記載のエアバッグにおいて、補強気室は、気室に一体に連通するものである。 The curtain airbag according to claim 2 is the airbag according to claim 1, wherein the reinforcing air chamber communicates integrally with the air chamber.

請求項1記載のカーテンエアバッグによれば、折り畳まれた状態から、互いに重ねられた基布部の間に設けられた気室にガスが導入されると、膨張部が所定面に沿って所定方向に膨張展開し、所定面側に移動してくる被保護物を拘束して保護する。膨張部の展開方向に対してエアバッグ本体部の後方の縁部に連続する取付部の部分は基布部が互いに密着してガスが導入されず屈曲しやすい状態となるが、膨張部の展開方向に対して取付部の両側方及び前方を囲む補強気室にガスが導入されて補強膨張部が膨張展開することにより、膨張部の部分でのカーテンエアバッグの屈曲を抑制し、膨張部が移動することを抑制して、展開過程及び展開後のカーテンエアバッグの挙動を安定させることができる。 According to the curtain airbag of the first aspect, when the gas is introduced from the folded state into the air chamber provided between the overlapping base fabric portions, the inflating portion is predetermined along the predetermined surface. The object to be inflated and deployed in the direction and moving to the predetermined surface side is restrained and protected. The portion of the attachment portion that is continuous with the rear edge of the airbag main body with respect to the deployment direction of the inflatable portion is in a state where the base fabric portions are in close contact with each other and the gas is not introduced and is easily bent. The gas is introduced into the reinforcing air chamber that surrounds both sides and the front of the mounting portion with respect to the direction, and the reinforcing inflating portion is inflated and deployed, thereby suppressing the bending of the curtain airbag at the inflating portion, and the inflating portion The movement of the curtain airbag can be stabilized by suppressing the movement and the behavior of the curtain airbag after the deployment.

請求項2記載のカーテンエアバッグによれば、請求項1記載の効果に加え、補強気室を気室に一体に連通して設けたため、補強膨張部が膨張部に機械的に連結されてカーテンエアバッグの挙動を安定できるとともに、カーテンエアバッグの構成を簡略化でき、製造コストを低減できる。 According to the curtain airbag of the second aspect, in addition to the effect of the first aspect, since the reinforcing air chamber is provided integrally connected to the air chamber, the reinforcing inflating portion is mechanically connected to the inflating portion and the curtain. The behavior of the airbag can be stabilized, the configuration of the curtain airbag can be simplified, and the manufacturing cost can be reduced.

本発明のカーテンエアバッグの一関連技術を示すカーテンエアバッグ装置を車両に搭載しカーテンエアバッグが膨張展開した状態の一部の説明図である。The curtain airbag device according to an related art curtain airbag of the present invention which is a part of explanatory view of a state where mounted curtain airbag is inflated and deployed in a vehicle. 同上カーテンエアバッグ装置の側面視の説明図である。It is explanatory drawing of the side view of a curtain airbag apparatus same as the above. 同上カーテンエアバッグ装置の一部の説明図である。It is explanatory drawing of a part of curtain air bag apparatus same as the above. 本発明のカーテンエアバッグの一実施の形態を示す説明図である。It is explanatory drawing which shows one Embodiment of the curtain airbag of this invention. 同上カーテンエアバッグ装置の側面視の説明図である。It is explanatory drawing of the side view of a curtain airbag apparatus same as the above. 同上カーテンエアバッグ装置の断面の説明図である。It is explanatory drawing of the cross section of a curtain airbag apparatus same as the above. 本発明のカーテンエアバッグの一参考技術を示す一部の説明図である。It is a partial explanatory view showing one reference technique of the curtain airbag of the present invention. 本発明のカーテンエアバッグの他の実施の形態を示す一部の説明図である。It is a partial explanatory view showing other embodiments of the curtain airbag of the present invention. 本発明のカーテンエアバッグの他の参考技術を示す一部の説明図である。It is a partial explanatory view showing another reference technique of the curtain airbag of the present invention. 本発明のカーテンエアバッグ装置のさらに他の参考技術を示す一部の説明図である。It is a partial explanatory view showing still another reference technique of the curtain airbag device of the present invention. 同上カーテンエアバッグ装置の断面の説明図である。It is explanatory drawing of the cross section of a curtain airbag apparatus same as the above.

以下、本発明のカーテンエアバッグ及びカーテンエアバッグ装置の一関連技術を図面を参照して説明する。 Hereinafter, one related technique of a curtain airbag and a curtain airbag apparatus according to the present invention will be described with reference to the drawings.

図1ないし図3において、1はエアバッグで、このエアバッグ1を備えたエアバッグ装置2は、カーテンエアバッグ装置とも呼ばれるもので、車両である自動車の車体3の車室4の収納位置としてのドア開口部の上縁のルーフサイド部5に配置されている。そして、このエアバッグ1は、カーテンエアバッグ、側突用エアバッグ、インフレータブルカーテン、あるいは頭部保護用エアバッグなどとも呼ばれるもので、側面衝突の衝撃を受けた際や横転(ロールオーバー)の際などに、乗員の側方にほぼ面状に展開し、被保護物である乗員を保護するようになっている。なお、以下、前後、上下、両側などの方向は、車両の直進方向を基準とし、矢印Fで示す方向が前方、矢印Aで示す方向が所定方向としての下方である。   1 to 3, reference numeral 1 denotes an airbag. An airbag device 2 including the airbag 1 is also called a curtain airbag device, and is used as a storage position of a compartment 4 of a vehicle body 3 of an automobile, which is a vehicle. It is arrange | positioned at the roof side part 5 of the upper edge of this door opening part. The airbag 1 is also called a curtain airbag, a side-impact airbag, an inflatable curtain, or a head protection airbag. The airbag 1 is subjected to a side impact or rollover. For example, it is developed in a plane substantially on the side of the occupant to protect the occupant as a protected object. In the following, directions such as front and rear, up and down, and both sides are based on the straight traveling direction of the vehicle, the direction indicated by arrow F is the forward direction, and the direction indicated by arrow A is the downward direction as the predetermined direction.

そして、この自動車の車体3は、車室4内に乗員が着座可能な前席及び後席を備え、これら前席及び後席に対応して、それぞれ上部に開口可能な開口部としての所定面を構成する窓部(サイドウィンドウ)6を備えたドア7が設けられている。また、車室4の両側には、前側から順に、Aピラーとも呼ばれるフロントピラー、柱状部であるピラー部としてのBピラーとも呼ばれるセンターピラー、Cピラーとも呼ばれるリアピラーなどのピラー8が設けられている。なお、図1に示すピラー8はセンターピラーである。そして、これらピラー8の上側、すなわち窓部6の一縁部である上縁部に、車体パネルを構成するルーフサイドレール10が設けられ、このルーフサイドレール10の所定の位置にナットやねじ孔などで構成された取付点である被取付部11が所定の間隔で複数設けられている。また、このルーフサイドレール10を介して天井部としての天井パネルが支持されている。   The vehicle body 3 includes a front seat and a rear seat in which a passenger can be seated in a passenger compartment 4, and a predetermined surface serving as an opening that can be opened at the top corresponding to the front seat and the rear seat. The door 7 provided with the window part (side window) 6 which comprises is provided. Further, pillars 8 such as a front pillar called A pillar, a center pillar called B pillar as a pillar part, and a rear pillar called C pillar are provided on both sides of the passenger compartment 4 in order from the front side. . The pillar 8 shown in FIG. 1 is a center pillar. A roof side rail 10 constituting a vehicle body panel is provided on the upper side of the pillar 8, that is, an upper edge which is one edge of the window 6, and a nut or a screw hole is provided at a predetermined position of the roof side rail 10. A plurality of attached portions 11 that are attachment points constituted by, for example, are provided at predetermined intervals. A ceiling panel as a ceiling portion is supported through the roof side rail 10.

そして、これら窓部6、ドア7及び各ピラー8、及びルーフサイドレール10の一部により、車室4の両側部に所定面14が構成されている。また、両側のフロントピラーの前側にはフロントガラス(フロントウインドシールド)が設けられ、両側のリアピラーの後側にはリアガラスが設けられている。そして、収納位置としてのルーフサイド部5は、天井パネルの両側の縁部の部分から、この縁部の部分といわば交差する方向に伸びるフロントピラーのほぼ全長にかかる部分にまで設定され、これら天井パネルの縁部の部分とフロントピラーとで仮想的に構成される内角の側にエアバッグ1が展開する所定面14が設定されている。   The window 6, the door 7 and each pillar 8, and a part of the roof side rail 10 constitute a predetermined surface 14 on both sides of the passenger compartment 4. A front glass (front windshield) is provided on the front side of the front pillars on both sides, and a rear glass is provided on the rear side of the rear pillars on both sides. And the roof side part 5 as a storage position is set from the edge part of the both sides of a ceiling panel to the part concerning the substantially full length of the front pillar extended in the direction which intersects with this edge part. A predetermined surface 14 on which the airbag 1 is deployed is set on the inner corner side virtually formed by the edge portion of the panel and the front pillar.

また、ルーフサイドレール10及び天井パネルの車室4側は、各ピラーの一部とともに、軟質すなわち変形可能な天井板であり室内装飾パネルであるルーフライニング(ヘッドライニング)15により覆われている。また、各座席には、シートベルト9が設けられ、センターピラーには、これらシートベルト9を支持する支持部9aが設けられている。また、各ピラー8の全長あるいは一部の車室4側には、それぞれ内装材であるピラーガーニッシュが取り付けられ、各ピラー8が覆われている。さらに、図示しないが、ルーフサイドレール10の下端部には、軟質の樹脂などにて形成された弾性変形可能なパッキング体が取り付けられている。このパッキング体は、ウェルトあるいはボディシールなどとも呼ばれるもので、各ドア7の上部が当接して密着するようになっている。   The roof side rail 10 and the ceiling panel on the side of the vehicle compartment 4 are covered with roof lining (headlining) 15 which is a soft or deformable ceiling plate and an interior decoration panel together with a part of each pillar. Each seat is provided with a seat belt 9, and the center pillar is provided with a support portion 9 a that supports the seat belt 9. Further, a pillar garnish, which is an interior material, is attached to the entire length of each pillar 8 or a part of the passenger compartment 4 to cover each pillar 8. Further, although not shown, an elastically deformable packing body made of soft resin or the like is attached to the lower end portion of the roof side rail 10. This packing body is also called a welt or a body seal, and the upper portions of the doors 7 are brought into contact with each other and are in close contact with each other.

そして、エアバッグ装置2は、前後の座席の乗員を保護可能ないわゆる前後席用エアバッグであり、ルーフサイドレール10とルーフライニング15となどに囲まれたルーフサイド部5に細長く折り畳んで収納されるエアバッグ1と、後席の後方あるいは上方に収納されこのエアバッグ1にガスを供給するガス発生器であるインフレータ25となどを備えている。さらに、このエアバッグ装置2は、エアバッグ1の前端部に連結されたテザーベルト26、折り畳んだエアバッグ1の形状を保持する破断可能な筒状あるいはひも状の形状保持部材、及び被取付部に取り付けられる取付具28などが備えられている。   The airbag device 2 is a so-called front / rear seat airbag capable of protecting passengers in the front and rear seats, and is stored in the roof side portion 5 surrounded by the roof side rail 10 and the roof lining 15 in an elongated manner. And an inflator 25 that is housed behind or above the rear seat and supplies gas to the airbag 1. Further, the airbag device 2 includes a tether belt 26 connected to the front end portion of the airbag 1, a breakable cylindrical or string-shaped shape holding member that holds the shape of the folded airbag 1, and an attached portion. An attachment 28 to be attached is provided.

そして、エアバッグ1は、単数あるいは複数の基布を組み合わせ、例えば1枚の基布を折り返しあるいは2枚の基布を重ねて接合するなどして、全体として扁平な袋状をなすエアバッグ本体部30が形成されている。そして、このエアバッグ本体部30は、側面視で前後方向を長手方向とする略矩形状で、車室4側に配置される内側の基布部31と車体側である外側に配置される外側の基布部32とを重ね、接合部である所定の縫製部33で縫い合わせ、ガスが流入して膨張展開し乗員を保護する袋状の膨張部35と、エアバッグ本体部30の後端上部に位置して膨張部35を外部に連通するガス導入部36と、ガスが流入せず膨張展開しない非膨張部となどが設けられている。   The airbag 1 is a combination of a single base fabric or a plurality of base fabrics. For example, the airbag body has a flat bag shape as a whole by, for example, folding back one base fabric or joining two base fabrics together. Part 30 is formed. The airbag main body 30 has a substantially rectangular shape with the front-rear direction as the longitudinal direction when viewed from the side, and an outer base fabric portion 31 disposed on the vehicle compartment 4 side and an outer side disposed on the vehicle body side. The base fabric portion 32 is overlapped and sewn at a predetermined sewing portion 33 that is a joint portion, and a bag-like inflatable portion 35 that inflates and deploys to protect the occupant by flowing in gas, and an upper rear end portion of the airbag main body 30 There are provided a gas introduction part 36 that communicates with the expansion part 35 to the outside and a non-expansion part that does not flow in gas and does not expand and develop.

そして、膨張部35は中空部で内側が乗員保護気室である気室38となり、ガス導入部36に直接的に連通しエアバッグ本体部30の上縁部に沿って位置するガス案内部41と、このガス案内部41に連通する前席保護部42及び後席保護部43となどが形成されている。   The inflating part 35 is a hollow part and becomes an air chamber 38 inside which is an occupant protection air chamber. The inflating part 35 communicates directly with the gas introducing part 36 and is located along the upper edge of the airbag main body 30. A front seat protection part 42 and a rear seat protection part 43 communicating with the gas guide part 41 are formed.

また、縫製部33は、縫製、接着、あるいは縫製とシール手段との併用などにより略気密あるいは高度な気密に構成され、膨張部35の外周を縫製する外周縫製部45と、この外周縫製部45に囲まれた領域に位置し各保護部42,43などを区画形成するとともに各部の展開時の幅寸法を規制する中間縫製部46とを備えている。そして、外周縫製部45は、ガス導入部36の部分を除き、エアバッグ本体部30の外周部の近傍に略沿って形成されている。また、中間縫製部46は、膨張部35の1カ所あるいは複数カ所に位置し、外周縫製部45と一体あるいは別体に形成されている。そして、各中間縫製部46は、線状をなす線部47と、この線部47の端末に位置して線部47を保護する円環状の保護部48が形成されている。そして、本関連技術では、中間縫製部46は、前席保護部42に位置し上側すなわち上流側を開口した略U字状をなす前側規制部50と、後席保護部43に位置し下端部が外周縫製部45に達する第1及び第2の後側規制部51,52とが形成されている。 The sewing portion 33 is configured to be substantially airtight or highly airtight by sewing, bonding, or a combination of sewing and sealing means, and an outer periphery sewing portion 45 for sewing the outer periphery of the inflatable portion 35, and the outer periphery sewing portion 45. And an intermediate sewing portion 46 for defining the protective portions 42, 43 and the like and for regulating the width dimension when the respective portions are unfolded. The outer peripheral sewing portion 45 is formed substantially along the vicinity of the outer peripheral portion of the airbag main body 30 except for the gas introduction portion 36. Further, the intermediate sewing portion 46 is located at one or a plurality of locations of the inflating portion 35 and is formed integrally with or separately from the outer peripheral sewing portion 45. Each intermediate sewing portion 46 is formed with a linear line portion 47 and an annular protective portion 48 that is positioned at the end of the line portion 47 and protects the line portion 47. In this related technique , the intermediate sewing portion 46 is positioned at the front seat protection portion 42 and has a substantially U-shaped front side restriction portion 50 opened on the upper side, that is, the upstream side, and the lower seat portion positioned at the rear seat protection portion 43. Are formed with first and second rear restricting portions 51 and 52 that reach the outer periphery sewing portion 45.

また、内側の基布部31と外側の基布部32との間には、必要に応じて、ガスを案内し、あるいは、展開時の膨張部35の幅寸法を規制する手段として、インナパイプ、前側隔壁体、あるいは後側隔壁体などが縫合などして取り付けられている。   Further, an inner pipe is provided between the inner base fabric portion 31 and the outer base fabric portion 32 as a means for guiding the gas or regulating the width dimension of the expansion portion 35 during deployment as necessary. The front partition body or the rear partition body is attached by sewing or the like.

さらに、エアバッグ本体部30には、複数カ所に、固定点である取付部55が形成されている。この取付部55は、非膨張部であり、本関連技術では、膨張部35の上端部近傍の乗員を保護する部分から外れた上方に位置し、かつ、上端部すなわち外周縫製部45より下方に離間するガス導入部36に位置し、膨張部35に周囲を囲まれた位置に形成されている。そして、この取付部55は、内側の基布部31と外側の基布部32とが密着して接合されて膨張部35とは気密に区画された領域であり、四角枠状の縫製である接合部56により接合されるとともに、縫製された部分にシール材が塗布して気密性が高められている。さらに、接合部56に囲まれた部分に、円孔状の取付孔58が各基布部31,32を貫通して形成されている。 Further, the airbag body 30 is formed with attachment portions 55 that are fixing points at a plurality of locations. This attachment portion 55 is a non-inflatable portion, and in this related technology, it is located above the portion that protects the occupant in the vicinity of the upper end portion of the inflatable portion 35 and below the upper end portion, that is, the outer peripheral sewing portion 45. It is located in the gas introduction part 36 that is spaced apart, and is formed at a position surrounded by the expansion part 35. The attachment portion 55 is an area in which the inner base fabric portion 31 and the outer base fabric portion 32 are in close contact with each other and are airtightly partitioned from the inflatable portion 35, and is sewn in a square frame shape. While being joined by the joining portion 56, a sealing material is applied to the sewn portion to improve airtightness. Furthermore, a circular attachment hole 58 is formed in a portion surrounded by the joint portion 56 so as to penetrate the base cloth portions 31 and 32.

そして、この取付部55の四囲を囲み、取付部55の部分の展開形状を保持するため、エアバッグ本体部30が膨張展開する中空補強構造体である補強膨張部61が構成され、この補強膨張部61の内側が補強気室62となっている。本関連技術では、補強膨張部61は膨張部35の一部であり、補強膨張部61は膨張部35と一体に連続して形成されている。また、補強気室62も、気室38の一部であり、補強気室62は気室38に一体に連通して形成されている。すなわち、本関連技術では、膨張部35の外殻を構成する基布部31,32と補強膨張部61を構成する基布部31,32とは一体であり、乗員を保護する膨張部35と形状を補強する補強膨張部61との境界は構造上も外観上も明確に区別されない。 Then, in order to surround the four surroundings of the attachment portion 55 and maintain the deployed shape of the portion of the attachment portion 55, a reinforcement inflating portion 61, which is a hollow reinforcing structure in which the airbag main body portion 30 is inflated and deployed, is configured. The inside of the part 61 is a reinforcing air chamber 62. In this related technique , the reinforcing inflating part 61 is a part of the inflating part 35, and the reinforcing inflating part 61 is formed integrally and continuously with the inflating part 35. The reinforcing air chamber 62 is also a part of the air chamber 38, and the reinforcing air chamber 62 is formed integrally with the air chamber 38. That is, in this related technology , the base fabric portions 31, 32 constituting the outer shell of the inflatable portion 35 and the base fabric portions 31, 32 constituting the reinforcing inflatable portion 61 are integrated, and the inflatable portion 35 protecting the occupant The boundary with the reinforcing expansion portion 61 that reinforces the shape is not clearly distinguished from the structural and appearance aspects.

また、取付具28は、ボルトであり、図6に示すように、取付部55の取付孔58を挿通して車体3のルーフサイドレール10の被取付部11に螺合するねじ部28aと、取付部55の車室4側に当接して基布部31,32をルーフサイドレール10側に押圧する頭部28bとを備えている。また、このボルトには、頭部28bよりも径寸法の大きい外径を有する円形状あるいは四角状などの板体などを組み合わせることもできる。   Further, the fixture 28 is a bolt, and as shown in FIG. 6, a screw portion 28a inserted through the attachment hole 58 of the attachment portion 55 and screwed into the attachment portion 11 of the roof side rail 10 of the vehicle body 3, A head portion 28b is provided that abuts against the vehicle compartment 4 side of the attachment portion 55 and presses the base fabric portions 31, 32 toward the roof side rail 10 side. Further, this bolt may be combined with a circular or square plate having an outer diameter larger than that of the head 28b.

なお、このエアバッグ本体部30には、取付タブあるいは耳部などとも呼ばれる取付片部は突設形成されておらず、エアバッグ本体部30すなわち膨張部35すなわち基布部31,32の上縁部は、直線状に形成されている。   The airbag body 30 is not provided with a protruding projecting portion called an attachment tab or an ear, and the upper edge of the airbag body 30, that is, the inflating portion 35, that is, the base fabric portions 31, 32. The part is formed linearly.

次に、このエアバッグ1の折り畳み工程、エアバッグ装置2の組み立て工程、及び車体3への取付工程を説明する。   Next, a folding process of the airbag 1, an assembly process of the airbag device 2, and an attachment process to the vehicle body 3 will be described.

まず、エアバッグ1は、自動機により、あるいは、手動により折り畳まれ、まず、平面状に広げた状態から、エアバッグ本体部30の下端部から膨張部35の前席保護部42及び後席保護部43の部分すなわち取付部55の下側の部分を所定方向に巻回してロール状などに折り畳むとともに、取付部55の上側の部分をロール状あるいは蛇腹状などに折り畳む。そして、内側の基布部31側から各取付部55の取付孔58に取付具のねじ部28aを挿入し、上下の折り畳んだ部分をまとめた状態で形状保持部材で形状を保持し、細長い円柱状に折り畳む。   First, the airbag 1 is folded by an automatic machine or manually, and first, the front seat protecting part 42 and the rear seat protecting part of the inflating part 35 from the lower end part of the airbag main body part 30 are spread out flat. The portion 43, that is, the lower portion of the attachment portion 55 is wound in a predetermined direction and folded into a roll shape or the like, and the upper portion of the attachment portion 55 is folded into a roll shape or a bellows shape. Then, the screw part 28a of the fixture is inserted into the attachment hole 58 of each attachment part 55 from the inner base cloth part 31 side, and the shape is held by the shape holding member in a state where the upper and lower folded parts are gathered, Fold it into a column.

さらに、後端部のガス導入部36にインフレータ25を接続してバンド64で気密に締め付け、エアバッグ装置2のモジュールを構成する。   Further, the inflator 25 is connected to the gas introducing portion 36 at the rear end portion and is hermetically tightened with the band 64 to constitute a module of the airbag device 2.

そして、このエアバッグ装置2を車室4内に持ち込み、ルーフライニング15及びピラーガーニッシュなどの内装部材が取り付けられる前に車体3への取付作業を行う。この取付作業は、取付具28のねじ部28aを車体3のルーフサイドレール10の被取付部11に螺合などして固定することにより行われる。   Then, the airbag device 2 is brought into the passenger compartment 4 and is attached to the vehicle body 3 before interior members such as roof lining 15 and pillar garnish are attached. This attaching operation is performed by screwing and fixing the screw portion 28a of the fixture 28 to the attached portion 11 of the roof side rail 10 of the vehicle body 3.

さらに、インフレータ25から導出されたハーネスを車体3に備えた制御装置に接続する。次いで、車体3の天井パネルにルーフライニング15を取り付け、各ピラー8にピラーガーニッシュを取り付けて、エアバッグ装置2を覆うことにより、エアバッグ装置2の車体3への取付作業が完了する。   Further, the harness led out from the inflator 25 is connected to a control device provided in the vehicle body 3. Next, the roof lining 15 is attached to the ceiling panel of the vehicle body 3, the pillar garnish is attached to each pillar 8, and the airbag device 2 is covered, whereby the operation of attaching the airbag device 2 to the vehicle body 3 is completed.

次に、エアバッグ1の展開動作を説明する。   Next, the deployment operation of the airbag 1 will be described.

車両の側面衝突あるいは横転などの際には、制御装置によりインフレータ25が作動し、このインフレータ25から噴射されるガスがガス導入部36からエアバッグ本体部30内の膨張部35に導入される。すると、エアバッグ本体部30の膨張部35は、形状保持部材を破断し、ルーフライニング15及び前後のピラーガーニッシュを押しのけながら膨張展開し、図5に示すように、車両の側部の所定面14に略沿って所定方向である略下方に迅速にカーテン状に膨張展開し、窓部6及びセンターピラーなどのピラー8などを覆い、乗員とピラー8などとの衝突の衝撃を緩和するとともに、乗員の車外放出を防止して保護する。   In the event of a side collision or rollover of the vehicle, the inflator 25 is actuated by the control device, and the gas injected from the inflator 25 is introduced from the gas introduction part 36 into the inflating part 35 in the airbag body part 30. Then, the inflating portion 35 of the airbag main body 30 breaks the shape retaining member, and inflates and deploys while pushing away the roof lining 15 and the front and rear pillar garnishes, and as shown in FIG. Is expanded and deployed in the form of a curtain in a substantially downward direction, substantially along the direction of the cover, covering the window 6 and the pillar 8 such as the center pillar, etc., and mitigating the impact of the collision between the occupant and the pillar 8, etc. Prevents and protects the vehicle from being released outside the vehicle.

より詳細には、膨張部35では、ガス導入部36に沿ってすなわち取付部55の上下を通ってガスが後端部から前端部まで迅速に供給され、ガス導入部36が迅速に展開し、ルーフライニング15を押し開く。そして、ガス導入部36の下側に位置する前席保護部42及び後席保護部43が所定面14上を転がりながらあるいは摺接しながら所定面14に沿って展開する。   More specifically, in the expansion portion 35, gas is rapidly supplied from the rear end portion to the front end portion along the gas introduction portion 36, that is, through the upper and lower portions of the attachment portion 55, and the gas introduction portion 36 is rapidly deployed. Push the roofing 15 open. Then, the front seat protection part 42 and the rear seat protection part 43 located on the lower side of the gas introduction part 36 develop along the predetermined surface 14 while rolling on or sliding against the predetermined surface 14.

一方、ガス導入部36の上側の部分及びガス導入部36の部分では、膨張部35は、取付部55を囲み補強膨張部61として展開する。ここで、取付部55の部分は、基布部31,32同士が密着してガスが導入されないため、屈曲しやすい部分となるが、各取付部55を囲んで補強気室62にガスが導入され、補強膨張部61が膨張展開するため、各取付部55の部分においても剛性が向上して膨張部35の他の部分と同様に形状が保持され、いわば立った状態が保持される。   On the other hand, in the upper part of the gas introduction part 36 and the part of the gas introduction part 36, the expansion part 35 surrounds the attachment part 55 and expands as a reinforcing expansion part 61. Here, the portion of the attachment portion 55 is easy to bend because the base fabric portions 31, 32 are in close contact with each other and gas is not introduced, but the gas is introduced into the reinforcing air chamber 62 surrounding each attachment portion 55. Since the reinforcing inflating portion 61 is inflated and deployed, the rigidity of each attachment portion 55 is improved and the shape is maintained in the same manner as the other portions of the inflating portion 35, so that the standing state is maintained.

このように、本関連技術のエアバッグ1によれば、折り畳まれた状態から、互いに重ねられた基布部31,32の間に設けられた気室38にガスが導入され、膨張部35が所定面14に沿って下方に膨張展開し、この膨張部35で所定面14側に移動してくる乗員を拘束し、衝突の衝撃を緩和するとともに、乗員の車外放出を防止して保護できる。 As described above, according to the airbag 1 of the related technology , gas is introduced from the folded state into the air chamber 38 provided between the base fabric portions 31 and 32 stacked on each other, and the inflating portion 35 is formed. Inflated and deployed downward along the predetermined surface 14, the occupant moving to the predetermined surface 14 side is restrained by the inflating portion 35, and the impact of the collision can be reduced, and the occupant can be prevented from being released from the vehicle.

また、エアバッグ1の取付部55は、エアバッグ本体部30から上側に突設された取付片ではなく、エアバッグ本体部30の膨張部35に囲まれた位置に設けたため、取付部55のために膨張部35から突設された形状を設ける必要がなく、エアバッグ1を構成する基布部31,32の形状を簡略化し、基布部31,32を原反から切り出す材料取りを効率良く行い、すなわち原反を効率良く利用して基布部31,32を製造して製造コストを低減できる。   Further, the attachment portion 55 of the airbag 1 is not an attachment piece protruding upward from the airbag main body portion 30 but is provided at a position surrounded by the inflating portion 35 of the airbag main body portion 30. Therefore, it is not necessary to provide a shape protruding from the inflating portion 35, the shape of the base fabric portions 31, 32 constituting the airbag 1 is simplified, and material removal for cutting out the base fabric portions 31, 32 from the original fabric is efficient. It can be performed well, that is, the base fabric portions 31 and 32 can be manufactured by efficiently using the raw fabric, thereby reducing the manufacturing cost.

そして、取付部55の部分は、取付片部と同様に、基布部31,32が互いに密着してガスが導入されず屈曲しやすい状態となるが、取付部55を囲んでガスが導入される補強気室62を備えた補強膨張部61を設けたため、この補強気室62にガスが導入されて補強膨張部61が膨張展開することにより、膨張部35と補強膨張部61とを少なくとも機械的に結合させて補強効果を発生させ、取付部55の部分でのエアバッグ1の屈曲を抑制し、膨張部35が車体3に対して揺れるように側方に移動することを抑制して、展開過程及び展開後のエアバッグ1の挙動を安定させ、容易に所望の展開挙動を実現し、位置安定性を向上して、乗員を安定して拘束できる。特に、車両の前後方向に沿って細長く折り畳まれた長尺なエアバッグ1を備えるカーテンエアバッグについては、直線状のルーフサイドレール10に沿って取り付けられて扁平に展開するものであるが、取付部55に隣接した補強膨張部61により、揺れるような挙動を容易に抑制できる。   And, like the attachment piece portion, the attachment portion 55 is in a state where the base fabric portions 31 and 32 are in close contact with each other and the gas is not introduced and is easily bent, but the gas is introduced around the attachment portion 55. Since the reinforced expansion portion 61 having the reinforced air chamber 62 is provided, gas is introduced into the reinforced air chamber 62 and the reinforced expansion portion 61 expands and deploys, so that the expansion portion 35 and the reinforced expansion portion 61 are at least machined. Are connected to each other to generate a reinforcing effect, to suppress the bending of the airbag 1 at the portion of the mounting portion 55, to suppress the lateral movement of the inflating portion 35 so as to sway with respect to the vehicle body 3, The deployment process and the behavior of the airbag 1 after deployment are stabilized, a desired deployment behavior is easily realized, the positional stability is improved, and the occupant can be restrained stably. In particular, a curtain airbag having a long airbag 1 folded in the longitudinal direction of the vehicle is mounted along a linear roof side rail 10 and flattened. The reinforcing expansion part 61 adjacent to the part 55 can easily suppress a swinging behavior.

また、取付部55は、膨張部35に囲まれた位置に設けたため、膨張部35の部分でのエアバッグ1の屈曲を全方向で抑制し、展開過程及び展開後のエアバッグ1の挙動を安定できる。さらに、補強膨張部61は、取付部55の側方から上方に連続して設けられたため、膨張展開した補強膨張部61が取付部55の上方に突っ張ることにより、取付部55の下方に膨張展開する膨張部35の位置安定性を向上できる。   Further, since the mounting portion 55 is provided at a position surrounded by the inflating portion 35, the bending of the airbag 1 at the portion of the inflating portion 35 is suppressed in all directions, and the deployment process and the behavior of the airbag 1 after deployment are controlled. Can be stable. Further, since the reinforcing expansion portion 61 is continuously provided upward from the side of the attachment portion 55, the expanded expansion portion 61 is inflated and deployed below the attachment portion 55 by stretching the reinforcement expansion portion 61 above the attachment portion 55. Thus, the positional stability of the expanding portion 35 can be improved.

さらに、補強気室62は気室38に一体に連通して設けられ、補強膨張部61も膨張部35の基布部31,32に一体に連続して形成されたため、補強気室62にガスを供給する別体の構成を設ける必要などがなく、製造コストを低減できるとともに、膨張部35と補強膨張部61との構造的に強固な連結を容易に実現でき、撓み強度を容易に増加させることができる。   Further, since the reinforcing air chamber 62 is integrally connected to the air chamber 38 and the reinforcing inflating portion 61 is also formed integrally and continuously with the base cloth portions 31 and 32 of the inflating portion 35, the reinforcing air chamber 62 has a gas flow. There is no need to provide a separate structure for supplying the gas, the manufacturing cost can be reduced, and the structurally strong connection between the expansion portion 35 and the reinforcement expansion portion 61 can be easily realized, and the flexural strength is easily increased. be able to.

なお、上記の関連技術では、取付部55は、四囲を膨張部35に囲まれる位置に設けるとともに、四角状の接合部56すなわち四角状の外形を備えたが、この構成に限られず、展開方向である下方に対する一側、すなわち取付部55の前後の少なくとも一方の側方に位置して補強気室62を設けた補強膨張部61を設けることにより、取付部55の部分でのエアバッグ1の変形を抑制し、乗員を保護する膨張部35が車体3に対して窓部6方向に自由に振れる動きを規制し、あるいは抑制する作用を奏して所望の展開挙動を実現できる。 In the related art described above, the mounting portion 55 is provided with a quadrangular enclosure at a position surrounded by the inflating portion 35 and has a quadrangular joint portion 56, that is, a quadrangular outer shape. By providing the reinforcing inflatable portion 61 provided with the reinforcing air chamber 62 located on one side with respect to the lower side, that is, at least one side of the front and rear of the attaching portion 55, the airbag 1 in the portion of the attaching portion 55 is provided. It is possible to realize a desired deployment behavior by suppressing or suppressing the movement of the inflating portion 35 that suppresses deformation and protects the occupant freely with respect to the vehicle body 3 in the direction of the window portion 6.

例えば、図4ないし図6に示す一実施の形態のように、エアバッグ本体部30すなわち膨張部35の上縁部に沿って取付部55を設け、取付部55のいわば3方を補強膨張部61で囲んだ構成とすることができる。この構成においても、取付部55の両側すなわち前後に隣接して補強気室62を設けた補強膨張部61を設けたため、取付部55の部分でのエアバッグ1の変形を抑制して所望の展開挙動を実現できる。 For example, as in the embodiment shown in FIGS. 4 to 6, a mounting portion 55 is provided along the upper edge portion of the airbag main body 30, that is, the inflating portion 35, and so-called three directions of the mounting portion 55 are reinforced inflating portions. A configuration surrounded by 61 can be adopted. Also in this configuration, since the reinforcement inflating part 61 provided with the reinforcing air chamber 62 is provided on both sides of the attachment part 55, that is, adjacent to the front and back, the deformation of the airbag 1 at the part of the attachment part 55 is suppressed and desired deployment is achieved. Behavior can be realized.

さらに、例えば、図3に示す四角状の接合部56に対して、図7に示す一参考技術のように円形状の接合部56を設けた円形状の構成としても良く、あるいは図示しない楕円形状とすることもできる。 Further, for example, the rectangular joint 56 shown in FIG. 3 may have a circular configuration in which a circular joint 56 is provided as in one reference technique shown in FIG. It can also be.

また、取付部55は、膨張部35に囲まれた位置に設けず、膨張部35から離間した位置に設けることもできる。例えば、図8に示す他の実施の形態のように、乗員を保護する膨張部35の上方に離間して取付部55を設けるとともに、この取付部55の両側すなわち前後に隣接して、気室38に連通する補強気室62を設け、補強膨張部61を構成することもできる。 Further, the attachment portion 55 can be provided not at a position surrounded by the expansion portion 35 but at a position separated from the expansion portion 35. For example, as in the other embodiment shown in FIG. 8, the mounting portion 55 is provided above the inflating portion 35 that protects the occupant, and the air chamber is adjacent to both sides of the mounting portion 55, that is, adjacent to the front and rear. It is also possible to provide a reinforcing expansion chamber 61 by providing a reinforcing air chamber 62 communicating with 38.

さらに、例えば、図9に示す他の参考技術のように、取付部55の一側から取付部55の上側に連続して略L字状に補強気室62を設け、補強膨張部61を構成することもできる。 Further, for example, as in another reference technique shown in FIG. 9, a reinforcing air chamber 62 is provided in a substantially L shape continuously from one side of the mounting portion 55 to the upper side of the mounting portion 55, thereby configuring the reinforcing expansion portion 61. You can also

また、上記の図2及び図5に示す構成では、取付部55は2カ所に設けたが、この構成に限られず、3カ所以上に設けることができる。すなわち、取付部55同士の間にガスを導入して補強気室62を形成できる間隔であれば、適宜の間隔で取付部55を設けることができる。   Further, in the configuration shown in FIG. 2 and FIG. 5 described above, the attachment portions 55 are provided at two locations. However, the configuration is not limited to this configuration and can be provided at three or more locations. That is, the mounting portions 55 can be provided at appropriate intervals as long as the gas can be introduced between the mounting portions 55 to form the reinforcing air chamber 62.

また、補強気室62へのガスの導入を規制する規制手段を備えることにより、補強膨張部61の部分でのエアバッグ1の屈曲を抑制する効果の発揮時期や効果の多少を制御し、展開過程及び展開後のエアバッグ1について所望の挙動を容易に実現できる。例えば、図10及び図11に示すさらに他の参考技術のように、規制手段70を設けた構成とすることができる。この構成では、取付部55は、円孔状の取付孔58を有するとともに、この取付孔58を囲む円形状の縫製である接合部56を備えている。さらに、取付部55同士の間には、縫製によりガスが導入されない非膨張部71が形成され、エアバッグ本体部30の上縁部に沿ったガス流路72が形成されるとともに、このガス流路72と下側の膨張部35とを連通して、上下に延びる補強気室62すなわち補強膨張部61が形成されている。また、規制手段70は、取付孔58を貫通する軸74と、この軸74の先端部に接合された丸棒状の閉塞手段75と、軸74の基端部に接合されるとともに車体3のルーフサイドレール10に固定されたソレノイドなどの駆動手段76とを備え、いわばソレノイドバルブを構成している。そして、この規制手段70は、取付具28を兼ねるもので、車体3の被取付部11に設けられ、以下に説明する動作の状態に拘わらず、閉塞手段75がエアバッグ本体部30の取付部55の部分を係止し、エアバッグ本体部30を車体3の被取付部11に保持する。また、駆動手段76は、タイマーなどを備えた制御手段に接続され、インフレータ25の作動後の所定の時点で動作する。また、ルーフサイドレール10には、軸74の外周面に嵌合して軸74を滑らかに進退可能とする筒状のスリーブ77が取り付けられている。 In addition, by providing a restricting means for restricting the introduction of gas into the reinforcing air chamber 62, the timing of exerting the effect of suppressing the bending of the airbag 1 at the reinforcing inflating portion 61 and the degree of the effect are controlled and deployed. The desired behavior of the airbag 1 after the process and deployment can be easily realized. For example, as in still another reference technique shown in FIG. 10 and FIG. In this configuration, the attachment portion 55 includes a circular attachment hole 58 and a joint portion 56 that is a circular sewing surrounding the attachment hole 58. Further, a non-inflatable portion 71 into which gas is not introduced by sewing is formed between the attachment portions 55, and a gas flow path 72 is formed along the upper edge portion of the airbag main body 30. A reinforcing air chamber 62 that extends in the vertical direction, that is, a reinforcing inflating portion 61 is formed by communicating the path 72 and the lower inflating portion 35. The restricting means 70 includes a shaft 74 penetrating the mounting hole 58, a round bar-shaped closing means 75 joined to the distal end portion of the shaft 74, a base end portion of the shaft 74, and the roof of the vehicle body 3. A drive means 76 such as a solenoid fixed to the side rail 10 is provided, and so-called a solenoid valve is configured. The restricting means 70 also serves as the attachment 28, and is provided in the attached portion 11 of the vehicle body 3. Regardless of the state of operation described below, the closing means 75 is attached to the attachment portion of the airbag main body 30. The portion 55 is locked, and the airbag main body 30 is held on the mounted portion 11 of the vehicle body 3. Further, the driving means 76 is connected to a control means having a timer or the like, and operates at a predetermined time after the operation of the inflator 25. In addition, a cylindrical sleeve 77 is attached to the roof side rail 10 so as to be fitted to the outer peripheral surface of the shaft 74 so that the shaft 74 can be smoothly advanced and retracted.

そして、この参考技術では、インフレータ25の作動前の初期状態では、軸74は駆動手段76側に引き込まれ、閉塞手段75が基布部31,32同士が密着するように押圧し、補強気室62へのガスの導入を阻止した状態となっている。ここで、インフレータ25の作動後、所定時間はこの状態が保持される。すると、ガスは補強気室62すなわち補強膨張部61を膨張展開させることなく、膨張部35を効率良く迅速に膨張展開させるとともに、取付部55の部分での柔軟な屈曲変形を許容し、エアバッグ1の展開挙動に与える影響を無くしあるいは少なくして、従来の取付片部を用いたエアバッグと同様のエアバッグ1の折畳形状に基づく挙動を容易に実現できる。そして、所定時間の経過後、例えば膨張部35がルーフライニング15から下側に突出して展開を開始した状態で、制御手段は、駆動手段76に電気を流し、軸74を車室4側に駆動して、閉塞手段75とルーフサイドレール10との間に所定の隙間を形成し、いわば弁を開いた状態とする。すると、ガスは補強気室62に供給され、補強膨張部61を膨張展開させる。この状態で、補強膨張部61が取付部55の部分でのエアバッグ1の屈曲を抑制し、エアバッグ1の位置安定性を向上する。 In this reference technique , in the initial state before the operation of the inflator 25, the shaft 74 is drawn into the driving means 76 side, and the closing means 75 is pressed so that the base fabric portions 31 and 32 are in close contact with each other. The gas is blocked from being introduced into 62. Here, after the operation of the inflator 25, this state is maintained for a predetermined time. Then, the gas allows the inflating portion 35 to be inflated and deployed efficiently and quickly without inflating and deploying the reinforcing air chamber 62, that is, the reinforcing inflating portion 61, and allows flexible bending deformation at the portion of the mounting portion 55. The influence based on the folding shape of the airbag 1 similar to the airbag using the conventional attachment piece portion can be easily realized by eliminating or reducing the influence on the deployment behavior of the airbag 1. Then, after a predetermined time has elapsed, for example, in a state where the inflating portion 35 protrudes downward from the roof lining 15 and starts to expand, the control means supplies electricity to the driving means 76 and drives the shaft 74 to the vehicle compartment 4 side. Thus, a predetermined gap is formed between the closing means 75 and the roof side rail 10, so that the valve is opened. Then, the gas is supplied to the reinforcing air chamber 62, and the reinforcing expansion part 61 is expanded and deployed. In this state, the reinforcing inflating portion 61 suppresses the bending of the airbag 1 at the attachment portion 55 and improves the positional stability of the airbag 1.

一方、膨張部35に先行して補強膨張部61を膨張展開させる構成とすると、膨張部35の展開時には取付部55の部分の柔軟性を抑制して剛性を確実に確保し、膨張部35の展開方向を所望の方向に指向させることができる。   On the other hand, when the reinforcing inflating part 61 is inflated and deployed prior to the inflating part 35, when the inflating part 35 is deployed, the rigidity of the mounting part 55 is suppressed and the rigidity of the inflating part 35 is ensured. The development direction can be oriented in a desired direction.

このようにして、ソレノイドバルブとタイマーなどの組み合わせ、いわば所定のタイミングで補強膨張部61を膨張展開させるアクティブ制御を行うことにより、展開初期のエアバッグ1の展開方向の制御と展開後期の展開挙動及び位置の安定をともに容易に実現できる。   In this way, by controlling the deployment direction of the airbag 1 at the initial stage of deployment and the deployment behavior at the later stage of deployment by performing active control for inflating and deploying the reinforcing inflatable portion 61 at a predetermined timing, such as a combination of a solenoid valve and a timer. In addition, stable position can be easily realized.

なお、規制手段は、絞りなどガスの流通を量的に規制するもの、タイマー制御のバルブなどガスの流通を時間的に規制するもの、逆止弁などガスが流れる方向を規制するものなどのいずれか1つあるいは複数を組み合わせて構成することもできる。また、規制手段は、全ての取付部55に対応して設ける他、一部のみの取付部55に対応して設けることもできる。   The restricting means may be any one that restricts the gas flow such as a throttle, one that restricts the gas flow temporally such as a timer-controlled valve, or one that restricts the gas flow direction such as a check valve. One or a plurality of them can be combined. Further, the restricting means can be provided corresponding to all the attachment portions 55, or can be provided corresponding to only a part of the attachment portions 55.

さらに、規制手段は、上記のように制御手段を備えたアクティブ制御の他、制御手段を用いずガス流の圧力などを利用したパッシブ制御とすることもできる。例えば、補強気室62に連通する連通部分に布片を取り付け、ガスの高速流の中で揺動させて流動抵抗を上げるようにし、あるいは、補強気室62に連通する連通路を屈曲させるなどして距離を大きくし、ガスの充填に要する時間を大きくして流動抵抗を上げることもできる。   In addition to the active control provided with the control means as described above, the regulation means can be passive control using the pressure of the gas flow without using the control means. For example, a piece of cloth is attached to the communicating portion communicating with the reinforcing air chamber 62 and is swung in a high-speed gas flow to increase the flow resistance, or the communication passage communicating with the reinforcing air chamber 62 is bent. Thus, the flow resistance can be increased by increasing the distance and increasing the time required for gas filling.

また、上記の各実施の形態では、補強膨張部61の補強気室62は、乗員を保護する膨張部35の気室38と直接連通し、いわば相互に直接流体であるガスを流通可能な連通関係としたが、この構成に限られない。例えば、1個のインフレータ25から供給されるガスを気室38及び補強気室62に同時に供給する他、1個のインフレータ25から供給されるガスを気室38あるいは補強気室62のいずれか一方に供給し、この一方から他方にガスを供給しても良く、あるいは、気室38と補強気室62とを連通させず独立として、互いに異なるインフレータからガスを供給することもできる。   Further, in each of the above embodiments, the reinforcing air chamber 62 of the reinforcing inflating portion 61 communicates directly with the air chamber 38 of the inflating portion 35 that protects the occupant. Although related, it is not limited to this configuration. For example, the gas supplied from one inflator 25 is supplied to the air chamber 38 and the reinforcing air chamber 62 simultaneously, and the gas supplied from one inflator 25 is either the air chamber 38 or the reinforcing air chamber 62. The gas may be supplied from one side to the other, or the gas chamber 38 and the reinforcing air chamber 62 may be independently communicated with each other, and the gas may be supplied from different inflators.

また、エアバッグ1の全ての取付部55に対応して補強膨張部61を設ける他、一部の取付部55のみに補強膨張部61を設けることもできる。   In addition to providing the reinforcing inflatable portions 61 corresponding to all the attaching portions 55 of the airbag 1, the reinforcing inflating portions 61 can be provided only in some of the attaching portions 55.

また、エアバッグ装置2は、必要に応じて、取付部55の部分に金属製のブラケットを用い、あるいは、エアバッグ1を収納時あるいは展開時に保護する樹脂製のプロテクタなど、適宜の構成を備えることができる。また、エアバッグ1は、適宜の折り畳み方法を採ることができる。   Moreover, the airbag apparatus 2 is equipped with appropriate structures, such as using a metal bracket for the attachment portion 55 as needed, or a resin protector that protects the airbag 1 during storage or deployment. be able to. Moreover, the airbag 1 can take an appropriate folding method.

さらに、他の参考技術として、エアバッグ1は、上側から下側に向かって展開して自動車の側方の窓部6を覆う構成に限られず、ドアの上部から上方に展開するドアマウントエアバッグや、座席の背部の側部から前方に展開するサイドエアバッグなど、所定面に沿って扁平な面状にエアバッグを膨張展開する適宜のエアバッグ装置に適用できる。 Furthermore, as another reference technique, the airbag 1 is not limited to a configuration in which the airbag 1 is deployed from the upper side to the lower side and covers the window 6 on the side of the automobile, but is a door-mounted airbag that is deployed upward from the upper part of the door. In addition, the present invention can be applied to an appropriate airbag device that inflates and deploys an airbag in a flat surface shape along a predetermined surface, such as a side airbag that deploys forward from the side portion of the back portion of the seat.

本発明は、例えば、自動車の側部の窓部に沿って展開するカーテンエアバッグ装置と呼ばれるエアバッグ装置に適用できる。   The present invention can be applied to, for example, an airbag apparatus called a curtain airbag apparatus that is deployed along a side window of an automobile.

1 エアバッ
11 被取付部
14 所定面
30 エアバッグ本体部
31 基布部
32 基布部
35 膨張部
38 気室
55 取付部
61 補強膨張部
62 補強気
A 所定方向
1 airbags
11 Mounted part
14 Predetermined surface
30 airbag body
31 Base fabric
32 base fabric
35 Expansion part
38 Air chamber
55 Mounting part
61 Reinforcement expansion part
62 Reinforced air chamber A Specified direction

Claims (2)

被取付部に取り付けられ折り畳まれた状態からガスが導入されて自動車の車室内で膨張展開するエアバッグ本体部を備えたカーテンエアバッグであって、
前記エアバッグ本体部は、
互いに重ねられた基布部及びこの基布部同士の間に設けられた気室を有し、この気室にガスが導入され所定面に沿って所定方向に膨張展開する膨張部と、
この膨張部の展開方向に対して前記エアバッグ本体部の後方の縁部に連続して設けられ、前記基布部が互いに密着して前記被取付部に取り付けられる取付部と、
前記展開方向に対して前記取付部の両側方及び前方を囲んで設けられた補強気室を有し、この補強気室にガスが導入されて膨張展開する補強膨張部と
を具備したことを特徴とするカーテンエアバッグ。
A curtain airbag having an airbag main body portion in which gas is introduced from a state of being attached to the attached portion and folded and inflated and deployed in a vehicle interior of an automobile ,
The airbag body is
An inflatable portion having a base cloth portion stacked on top of each other and an air chamber provided between the base cloth portions, wherein gas is introduced into the air chamber and inflated and deployed in a predetermined direction along a predetermined surface;
An attachment part that is provided continuously to the rear edge of the airbag body part with respect to the deployment direction of the inflatable part, and wherein the base fabric parts are in close contact with each other and attached to the attached part;
A reinforcing air chamber provided around the both sides and the front of the mounting portion with respect to the expansion direction, and a reinforcing expansion portion that expands and expands when gas is introduced into the reinforcing air chamber. Curtain airbag.
補強気室は、気室に一体に連通する
ことを特徴とする請求項1記載のカーテンエアバッグ。
The curtain airbag according to claim 1, wherein the reinforcing air chamber communicates integrally with the air chamber.
JP2010247711A 2010-11-04 2010-11-04 Curtain airbag Expired - Fee Related JP5627398B2 (en)

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CN106314350B (en) * 2015-06-26 2021-01-12 奥托立夫开发公司 Airbag module and vehicle seat equipped with the same

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DE29814990U1 (en) * 1998-08-20 1998-12-17 Trw Repa Gmbh Gas bag
US6527296B2 (en) * 2000-03-17 2003-03-04 Trw Vehicle Safety Systems Inc. Inflatable side curtain
US6338498B1 (en) * 2000-10-26 2002-01-15 Delphi Technologies, Inc Side air bag providing enhanced coverage
JP2004114895A (en) * 2002-09-27 2004-04-15 Toyoda Gosei Co Ltd Head protecting airbag device
JP2007261510A (en) * 2006-03-29 2007-10-11 Toyoda Gosei Co Ltd Airbag device for pedestrian
JP2010143528A (en) * 2008-12-22 2010-07-01 Nippon Plast Co Ltd Airbag device

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