JP5361065B2 - Airbag - Google Patents

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JP5361065B2
JP5361065B2 JP2009207132A JP2009207132A JP5361065B2 JP 5361065 B2 JP5361065 B2 JP 5361065B2 JP 2009207132 A JP2009207132 A JP 2009207132A JP 2009207132 A JP2009207132 A JP 2009207132A JP 5361065 B2 JP5361065 B2 JP 5361065B2
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airbag
tack
base fabric
base
inflating
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JP2011057028A (en
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明人 漆畑
雅人 鈴木
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Nihon Plast Co Ltd
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Nihon Plast Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To flatly deploy a curtain airbag, and to ensure an impact-absorbing stroke. <P>SOLUTION: An airbag 1 is flatly deployed by restricting a thickness dimension by a connection part 40 obtained by sewing base clothes 31, 32 each other and directly connecting them. A tack part 42 is formed by folding one base cloth 32 on the connection part 40. In the tack part 42, upper and lower end parts are integrally sewn on an outer peripheral sewing part 34. At deployment of the airbag 1, the impact-absorbing stroke on a portion of the connection part 40 is ensured by an inflated tack part 42, and impact-absorbing characteristic on an entire protection area is enhanced. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

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エアバッグに関する。   The present invention relates to an airbag that is deployed along, for example, a window portion on a side portion of a vehicle cabin.

従来、ガスを導入して膨張展開するエアバッグを備えたエアバッグ装置について、自動車の車室の側部の窓部などに沿ってエアバッグを展開し乗員を保護するいわゆるカーテンエアバッグ装置が知られている。そして、このエアバッグ装置のエアバッグは、通常時は、細長く折り畳まれ、車室側部の窓部の上側部のルーフサイド部に沿って収納されている。そして、このエアバッグは、自動車が側面衝突など側方からの衝撃を受けた際に、インフレータからガスが供給され、側部のドアの窓部やBピラーなどに沿って下方に扁平に膨張展開し、乗員の頭部などを保護するようになっている。   2. Description of the Related Art Conventionally, as an airbag apparatus having an airbag that inflates and deploys by introducing gas, a so-called curtain airbag apparatus that deploys an airbag along a side window of an automobile compartment to protect an occupant is known. It has been. And the airbag of this airbag apparatus is normally folded long and is accommodated along the roof side part of the upper part of the window part of a vehicle interior part. The airbag is supplied with gas from the inflator when the automobile receives a side impact such as a side collision, and is inflated and deployed flat along the side door window or B pillar. In addition, the head of the passenger is protected.

また、このエアバッグは、車室側部に沿って扁平な面状に展開させるため、例えば2枚の基布の外周部を連結し、ガスが導入されて膨張する展開部を形成するとともに、この展開部の内側の所定位置で縫製あるいは一体の織りによる連結部で基布同士を連結し、展開時の空気層の厚さ寸法すなわち衝撃吸収ストロークを規定している(例えば、特許文献1参照)。   Further, in order to deploy this airbag in a flat surface shape along the side of the passenger compartment, for example, the outer peripheral portion of two base fabrics is connected, and a deployment portion that expands when gas is introduced, is formed. The base fabrics are connected to each other at a predetermined position on the inner side of the expanded portion by a connecting portion by sewing or integral weaving, and the thickness dimension of the air layer at the time of expansion, that is, the shock absorbing stroke is defined (for example, see Patent Document 1). ).

しかしながら、この構成では、連結部の位置では展開時の厚さ寸法はないため、エアバッグの保護領域の各位置における衝撃吸収特性の適切な調整が容易でない。   However, in this configuration, since there is no thickness dimension at the time of deployment at the position of the connecting portion, it is not easy to appropriately adjust the shock absorption characteristics at each position of the protection region of the airbag.

この点、エアバッグの外殻を構成する基布同士の間に、通気性を有する基布を重ねて配置し、この通気性を有する基布を外殻を構成する一方の基布に連結部で連結する構成や、通気性を有する基布で外殻を構成する基布同士を連結しいわばテザーを設ける構成が知られている(例えば、特許文献2参照)。   In this respect, a base fabric having air permeability is placed between the base fabrics constituting the outer shell of the airbag, and the base fabric having air permeability is connected to one base fabric constituting the outer shell. There are known a configuration in which the tethers are connected, and a configuration in which tethers are provided to connect the base fabrics constituting the outer shell with a breathable base fabric (for example, see Patent Document 2).

しかしながら、このように、外殻を構成する基布同士の間に、通気性を有する基布を重ねて配置する構成では、エアバッグのほぼ全面で3枚の基布が重ねられることになり、基布の使用量が増加するとともに小さく折り畳むことが困難になる。また、エアバッグの内側にテザーを設ける構成では、縫製による製造工程が煩雑になり、製造コストが上昇する。   However, in this way, in the configuration in which the base fabric having air permeability is placed between the base fabrics constituting the outer shell, three base fabrics are stacked on almost the entire surface of the airbag, As the amount of use of the base fabric increases, it becomes difficult to fold it small. Moreover, in the structure which provides a tether inside an airbag, the manufacturing process by sewing becomes complicated and the manufacturing cost increases.

また、エアバッグとして必要な大きさの2倍の大きさの2枚の基布を重ねて外周部を連結し、連結部を形成した上で、これら連結部が互いに重ならないように上下方向あるいは長手方向の中央で折返した構成が知られている(例えば、特許文献3参照)。   In addition, two base fabrics having a size twice as large as that required for an airbag are overlapped to connect the outer peripheral portion, and a connecting portion is formed. Then, the connecting portion does not overlap each other in the vertical direction or A configuration that is folded at the center in the longitudinal direction is known (for example, see Patent Document 3).

しかしながら、この構成では、エアバッグのほぼ全面で4枚の基布が重ねられることになり、基布の使用量が増加するとともに小さく折り畳むことが困難になる。また、折り返した部分での円滑なガスの流れを確保するために、構成が複雑になり、製造コストが上昇する。   However, with this configuration, four base fabrics are overlaid on almost the entire surface of the airbag, and the amount of base fabric used increases and it becomes difficult to fold it small. Further, in order to ensure a smooth gas flow at the folded portion, the configuration becomes complicated and the manufacturing cost increases.

また、いわゆるワンピースウィービング(ジャガード織り)を応用し、エアバッグの保護領域の全域で3層の基布及びこれら基布を連結する結合部を一体的に織り上げ、膨張部分を相補的に配置する構成が知られている(例えば、特許文献4参照)。   In addition, by applying so-called one-piece weaving (jacquard weaving), a three-layer base fabric and a connecting portion connecting these base fabrics are integrally woven throughout the protection area of the airbag, and the inflated portion is arranged in a complementary manner. Is known (see, for example, Patent Document 4).

しかしながら、この構成では、製造上、高度で複雑な装置と技術を要し、製造コストが上昇する。   However, this configuration requires a sophisticated and complicated apparatus and technology in manufacturing, and increases the manufacturing cost.

特開2004−1712号公報 (図1−2)JP 2004-1712 A (Fig. 1-2) 特開2004−210257号公報 (図1−2)Japanese Patent Laying-Open No. 2004-210257 (FIG. 1-2) 特開2005−271755号公報 (図3−5)Japanese Patent Laying-Open No. 2005-271755 (FIG. 3-5) 特開2004−268880号公報(図4)Japanese Patent Laying-Open No. 2004-268880 (FIG. 4)

上記のように、基布同士を連結した部分での衝撃吸収特性を向上する従来の構成では、製造コストが上昇する問題を有している。   As described above, the conventional configuration for improving the impact absorption characteristics at the portion where the base fabrics are connected to each other has a problem that the manufacturing cost increases.

本発明は、このような点に鑑みなされたもので、基布部同士を連結した部分での衝撃吸収特性を容易に向上できるエアバッグを提供することを目的とする。   This invention is made in view of such a point, and it aims at providing the airbag which can improve the shock absorption characteristic in the part which connected the base fabric parts easily.

請求項1記載のエアバッグは、折り畳まれた状態からガスが導入され所定面に沿って扁平に膨張展開するエアバッグであって、第1の基布部と、この第1の基布部に重ねて配置される第2の基布部と、これら第1の基布部と第2の基布部とを接合し、内側にガスが導入される膨張部を区画形成する外周連結部と、この外周連結部によって区画形成された前記膨張部に位置して前記第1の基布部と第2の基布部とを直接に連結して前記膨張部の展開時の空気層の厚さ寸法を規制する連結部と、前記基布部の少なくとも一方の前記膨張部に位置する部分を前記膨張部の外側方に折り重ねこの膨張部に位置する前記連結部を覆うとともに前記膨張部からガスが導入されるタック部と、このタック部の一部で基布部同士を連結し前記タック部の形状を保持するタック保持部とを具備するものである。 The airbag according to claim 1 is an airbag in which gas is introduced from a folded state and is inflated and deployed in a flat manner along a predetermined surface, and includes a first base fabric portion and the first base fabric portion. A second base fabric portion arranged in an overlapping manner, an outer peripheral connection portion that joins the first base fabric portion and the second base fabric portion, and defines an expansion portion into which gas is introduced inside; The thickness dimension of the air layer when the expansion portion is deployed by directly connecting the first base fabric portion and the second base fabric portion at the expansion portion defined by the outer peripheral connection portion. A connecting portion that regulates and a portion of the base fabric portion that is located in the inflating portion is folded outwardly of the inflating portion to cover the connecting portion that is located in the inflating portion and gas from the inflating portion. The tack part to be introduced and the base cloth part are connected to each other by a part of the tack part, and the shape of the tack part is It is intended to and a tack retaining portion for lifting.

請求項2記載のエアバッグは、請求項1記載のエアバッグにおいて、連結部は、線状をなし、タック部は、前記連結部に近接しかつ前記連結部に平行な第1の折り線及びこの第1の折り線と平行な第2の折り線により基布部を折り返して形成され、タック保持部は、外周連結部により構成されたものである。   The airbag according to claim 2 is the airbag according to claim 1, wherein the connecting portion has a linear shape, and the tack portion has a first fold line that is close to the connecting portion and parallel to the connecting portion, and The base fabric portion is formed by folding back the second fold line parallel to the first fold line, and the tack holding portion is constituted by an outer peripheral connection portion.

請求項3記載のエアバッグは、請求項1または2記載のエアバッグにおいて、タック部は、反被保護物側に位置する基布部のみに設けられたものである。   The airbag according to claim 3 is the airbag according to claim 1 or 2, wherein the tack portion is provided only on the base fabric portion located on the side of the object to be protected.

請求項4記載のエアバッグは、請求項1または2記載のエアバッグにおいて、タック部は、被保護物側に位置する基布部のみに設けられたものである。   According to a fourth aspect of the present invention, in the airbag according to the first or second aspect, the tack portion is provided only on the base fabric portion positioned on the protected object side.

請求項5記載のエアバッグは、請求項1または2記載のエアバッグにおいて、タック部は、第1の基布部及び第2の基布部に交互に設けられたものである。   The airbag according to claim 5 is the airbag according to claim 1 or 2, wherein the tack portions are alternately provided on the first base fabric portion and the second base fabric portion.

請求項1記載のエアバッグによれば、所定面に沿ってエアバッグが膨張展開し、被保護物を保護する。内側にガスが導入される膨張部は、連結部により全体としての厚さ寸法が規制され、扁平に展開する形状が実現される。膨張部の膨張時にはタック部が外周連結部によって区画形成された膨張部に位置する連結部を覆って膨張し、連結部の部分での衝撃吸収特性を向上できる。タック部は、基布部を膨張部の外側方に折り重ね、タック保持部で形状を保持して形成でき、構成が簡略で製造コストを低減できる。タック部は、連結部の近傍に形成すれば良く、エアバッグの全体を3枚以上の基布を重ねて形成する構成に比べ、基布の使用量を削減し、製造コストを低減できるとともに、小さく折り畳むことが容易になる。タック部は、連結部を覆う形状に形成すれば良く、ガスの使用量の増加を抑制し、エアバッグ装置の製造コストの上昇を抑制できる。タック部は、膨張部の外側方に形成されるため、膨張部の内部のガスの流れを規制せず、膨張部の円滑迅速な展開を容易に実現できる。連結部は、基布部同士を直接に連結するもので、構成が簡略で製造コストを低減できる。 According to the airbag of the first aspect, the airbag is inflated and deployed along the predetermined surface to protect the object to be protected. As for the expansion part into which gas is introduced inside, the thickness dimension as a whole is regulated by the connecting part, and a shape that develops flat is realized. When the inflating part is inflated, the tack part is inflated so as to cover the connecting part located in the inflating part defined by the outer peripheral connecting part, so that the shock absorbing characteristic at the connecting part can be improved. The tack part can be formed by folding the base cloth part outward of the inflating part and holding the shape by the tack holding part, and the structure is simple and the manufacturing cost can be reduced. The tack portion only needs to be formed in the vicinity of the connecting portion, and compared to a configuration in which the entire airbag is formed by stacking three or more base fabrics, the amount of base fabric used can be reduced, and the manufacturing cost can be reduced. It becomes easy to fold small. What is necessary is just to form a tack part in the shape which covers a connection part, and can suppress the increase in the usage-amount of gas, and can suppress the raise of the manufacturing cost of an airbag apparatus. Since the tack portion is formed on the outer side of the expansion portion, smooth and rapid deployment of the expansion portion can be easily realized without restricting the flow of gas inside the expansion portion. A connection part connects base fabric parts directly, can simplify a structure and can reduce manufacturing cost.

請求項2記載のエアバッグによれば、請求項1記載の効果に加え、タック部は、線状をなす連結部に近接しかつ連結部に平行な第1の折り線及びこの第1の折り線と平行な第2の折り線により基布部を折り返して形成され、タック保持部は、外周連結部により構成されたため、構成が簡略で製造工程の簡略化が可能であり、製造コストを低減できる。   According to the airbag of the second aspect, in addition to the effect of the first aspect, the tack portion includes a first fold line that is close to the parallel connecting portion and is parallel to the connecting portion, and the first fold. Since the base fabric part is folded back by a second fold line parallel to the line, and the tack holding part is constituted by the outer peripheral connecting part, the structure is simple and the manufacturing process can be simplified, and the manufacturing cost is reduced. it can.

請求項3記載のエアバッグによれば、請求項1または2記載の効果に加え、タック部は、反被保護物側に位置する基布部のみに設けたため、タック部が被保護物に干渉することを防止できる。タック部を一方の基布部のみに設けることにより、製造工程を簡略化して製造コストを低減できる。   According to the airbag of the third aspect, in addition to the effect of the first or second aspect, since the tack part is provided only on the base cloth part located on the anti-protected object side, the tack part interferes with the protected object. Can be prevented. By providing the tack part only on one base cloth part, the manufacturing process can be simplified and the manufacturing cost can be reduced.

請求項4記載のエアバッグによれば、請求項1または2記載の効果に加え、タック部は、被保護物側に位置する基布部のみに設けられたため、タック部が所定面側の部材に干渉することを防止し、エアバッグの円滑迅速な展開を容易にできる。膨張部に対してガスが流入しにくいタック部を被保護物側に位置させることにより、被保護物に対するエアバッグの反力を容易に小さく調整できる。タック部を一方の基布部のみに設けることにより、製造工程を簡略化して製造コストを低減できる。   According to the airbag of the fourth aspect, in addition to the effect of the first or second aspect, since the tack portion is provided only on the base cloth portion positioned on the protected object side, the tack portion is a member on the predetermined surface side. It is possible to prevent the air bag from interfering with the air bag and to easily and smoothly deploy the airbag. By positioning the tack portion on which the gas hardly flows into the inflatable portion on the protected object side, the reaction force of the airbag against the protected object can be easily adjusted to be small. By providing the tack part only on one base cloth part, the manufacturing process can be simplified and the manufacturing cost can be reduced.

請求項5記載のエアバッグによれば、請求項1または2記載の効果に加え、タック部は、第1の基布部及び第2の基布部に交互に設けられたため、第1の基布部と第2基布部との形状を近似させ、基布の材料取りの効率を容易に向上でき、製造コストを低減できる。エアバッグの両面側にタック部が偏らずに配置されるため、エアバッグの膨張展開時の反りを抑制し、容易に安定して展開させることができる。   According to the airbag of the fifth aspect, in addition to the effect of the first or second aspect, since the tack portions are alternately provided on the first base fabric portion and the second base fabric portion, the first base fabric portion is provided. By approximating the shapes of the cloth part and the second base cloth part, the material collecting efficiency of the base cloth can be easily improved, and the manufacturing cost can be reduced. Since the tack portions are arranged on both sides of the airbag without being biased, it is possible to suppress the warp when the airbag is inflated and deployed, and to easily and stably deploy the airbag.

本発明のエアバッグの一実施の形態を模式的に示す説明図であり、(a)は一方から見た斜視図、(b)は他方から見た斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view schematically showing an embodiment of an airbag of the present invention, where (a) is a perspective view seen from one side, and (b) is a perspective view seen from the other side. 同上エアバッグを模式的に示す図1(a)のI−I断面図である。It is II sectional drawing of Fig.1 (a) which shows an airbag same as the above. 同上エアバッグの展開時の状態を模式的に示す図1(a)のI−I相当位置の断面図である。It is sectional drawing of the II equivalent position of Fig.1 (a) which shows the state at the time of expansion | deployment of an airbag same as the above. 本発明のエアバッグの第2の実施の形態を模式的に示す展開時の状態の一部を切り欠いた一部の斜視図である。It is the one part perspective view which notched a part of the state at the time of the expansion | deployment which shows typically 2nd Embodiment of the airbag of this invention. 本発明のエアバッグの第3の実施の形態を模式的に示す説明図であり、(a)は展開前の状態の断面図、(b)は展開時の状態の断面図である。It is explanatory drawing which shows typically 3rd Embodiment of the airbag of this invention, (a) is sectional drawing of the state before expansion | deployment, (b) is sectional drawing of the state at the time of expansion | deployment. 本発明のエアバッグの第4の実施の形態を模式的に示す説明図であり、(a)は展開前の状態の断面図、(b)は展開時の状態の断面図である。It is explanatory drawing which shows typically 4th Embodiment of the airbag of this invention, (a) is sectional drawing of the state before expansion | deployment, (b) is sectional drawing of the state at the time of expansion | deployment. 本発明のエアバッグの第5の実施の形態を模式的に示す説明図であり、(a)は展開前の状態の断面図、(b)は展開時の状態の断面図である。It is explanatory drawing which shows typically 5th Embodiment of the airbag of this invention, (a) is sectional drawing of the state before expansion | deployment, (b) is sectional drawing of the state at the time of expansion | deployment. 本発明のエアバッグの第6の実施の形態を模式的に示す説明図であり、(a)は展開前の状態の断面図、(b)は展開時の状態の断面図である。It is explanatory drawing which shows typically 6th Embodiment of the airbag of this invention, (a) is sectional drawing of the state before expansion | deployment, (b) is sectional drawing of the state at the time of expansion | deployment. 本発明のエアバッグの第7の実施の形態を模式的に示す一部を切り欠いた一部の斜視図である。It is the one part perspective view which notched the part which shows typically 7th Embodiment of the airbag of this invention.

以下、本発明のエアバッグの一実施の形態を図面を参照して説明する。   Hereinafter, an embodiment of an airbag 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は、カーテンエアバッグ装置、カーテン型エアバッグモジュール(CAB)、あるいは頭部保護エアバッグ装置などとも呼ばれるもので、車両としての自動車を構成する車体の車室の被設置部であるルーフサイド部に配置されている。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、被保護物としての座席に着席した乗員の側方にほぼ面状に展開し、乗員を保護するようになっている。   1 to 3, reference numeral 1 denotes an airbag, and the airbag apparatus provided with the airbag 1 is also called a curtain airbag apparatus, a curtain type airbag module (CAB), or a head protection airbag apparatus. Thus, it is arranged on the roof side part which is the installation part of the compartment of the vehicle body constituting the automobile as the vehicle. 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. In addition, it is deployed in a substantially planar manner on the side of the occupant seated in the seat as the object to be protected to protect the occupant.

なお、以下、前後方向、車幅方向である両側方向、上下方向などの方向は、車体の直進方向を基準とし、前側方向(図1に示す矢印F方向)、所定方向としての下方(図1に示す矢印A方向)、被保護物側としての内方(図1に示す矢印B方向)、反被保護物側としての外方(図1に示す矢印C方向)などを説明する。また、図1に示すDは座席に着席した被保護物側としての乗員を模したダミーの頭部である。   Hereinafter, the front-rear direction, the vehicle width direction, the both-side direction, the up-down direction, and the like are based on the straight direction of the vehicle body as a reference, the front side direction (arrow F direction shown in FIG. 1), and the downward direction as the predetermined direction (FIG. 1). The arrow (in the direction of arrow A shown in FIG. 1), the inner side as the protected object side (the direction of arrow B shown in FIG. 1), the outer side as the anti-protected object side (in the direction of arrow C shown in FIG. 1), etc. Further, D shown in FIG. 1 is a dummy head imitating an occupant as a protected object seated on the seat.

なお、このエアバッグ装置が備えられる自動車の車体は、図示しないが、車室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、開口可能な窓部(サイドウィンドウ)を備えたドアが設けられている。また、車室の両側の側部には、前側から順に、Aピラーとも呼ばれるフロントピラー、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が設けられている。そして、これら窓部、ドア及び各ピラーなどにより、車室の両側の側部に所定面Eが構成されている。また、これらピラーの上側、すなわち窓部の一縁部である上縁部に、車体パネルを構成する被取付部材としてのルーフサイドレールが設けられ、このルーフサイドレールを介して天井部の天井パネルが支持されている。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。   Although the vehicle body of the automobile provided with this airbag device is not shown, it has a front seat and a rear seat in which a passenger can sit, and a window portion that can be opened corresponding to the front seat and the rear seat. A door with a (side window) is provided. Further, a front pillar called A pillar, a center pillar called B pillar, and a rear pillar called C pillar are provided in order from the front side on both sides of the passenger compartment. And the predetermined surface E is comprised by the side part of the both sides of a vehicle interior by these window parts, a door, and each pillar. Further, a roof side rail as a mounting member constituting the vehicle body panel is provided on the upper side of these pillars, that is, the upper edge which is one edge of the window, and the ceiling panel of the ceiling part is provided via the roof side rail. Is supported. 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.

また、ルーフサイド部は、車体のドア開口部の上縁に沿った車室の側部上縁部であり、天井パネルの両側の縁部の部分から、この縁部の部分と交差する方向に伸びるフロントピラー及びリア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及びリアピラーとで仮想的に構成される弧の内側に、エアバッグ1が展開する所定面Eが設定される。また、天井パネルの下面すなわち車室側には、ルーフライニングあるいはヘッドライニングなどと呼ばれる軟質のパネルであるルーフトリムが配置され、このルーフトリムにより、ルーフサイド部の車室側が覆われるようになっている。   The roof side portion is a side upper edge portion of the passenger compartment along the upper edge of the door opening of the vehicle body, and extends from the edge portions on both sides of the ceiling panel in a direction intersecting with the edge portion. The predetermined surface on which the airbag 1 is deployed inside an arc virtually formed by the edge portion of the ceiling panel and the front pillar and the rear pillar, which is set up to a portion covering almost the entire length of the extending front pillar and rear pillar. E is set. In addition, a roof trim, which is a soft panel called roof lining or head lining, is disposed on the lower surface of the ceiling panel, that is, on the passenger compartment side. The roof trim covers the passenger compartment side of the roof side portion. Yes.

そして、エアバッグ装置は、前席及び後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、ルーフサイド部に沿って細長く折り畳んで収納されたエアバッグ1に加え、後席の後部上側に位置してエアバッグ1に膨張のためのガスを供給するガス発生器であるインフレータ20、エアバッグ1をルーフサイドレールに取り付ける金属製のブラケット、折り畳んだエアバッグ1に沿って取り付けられて展開時などにエアバッグ1を保護する樹脂製のプロテクタ、エアバッグ1の前端部に連結された吊り紐、及び折り畳んだエアバッグ1の形状を保持する形状保持部材などが備えられ、モジュールが構成されている。   The airbag device is a so-called front-rear seat airbag that can protect front and rear passengers, and in addition to the airbag 1 that is folded and stored along the roof side portion, the rear portion of the rear seat An inflator 20 that is located on the upper side and supplies gas for inflation to the airbag 1, a metal bracket that attaches the airbag 1 to the roof side rail, and a folded airbag 1. A resin protector that protects the airbag 1 during deployment, a hanging strap connected to the front end of the airbag 1, a shape holding member that holds the shape of the folded airbag 1, and the like are provided. Has been.

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、本実施の形態では、一対の2枚の基布を重ねて接合して、扁平な袋状に形成されたエアバッグ本体部30と、このエアバッグ本体部30の上縁部の複数カ所から延設された車体取付用の取付片部となどを備え、細長く折り畳んでルーフサイド部に収納される。   The airbag 1 is a combination of one or a plurality of base fabrics, and in the present embodiment, a pair of two base fabrics are overlapped and joined to form an airbag main body 30 formed into a flat bag shape. The vehicle body 30 includes an attachment piece for attaching the vehicle body extending from a plurality of locations on the upper edge of the airbag main body 30, and is folded into an elongated shape and stored in the roof side.

すなわち、エアバッグ本体部30は、車室側(内方B)に配置される第1の基布部としての第1の基布31と、車体側(外方C)に配置される第2の基布部としての第2の基布32とを備え、これら基布31,32を重ね、外周連結部34で縫い合わせて、ガスが流入して膨張展開する袋状の膨張部36と、この膨張部36に連通するガスポートであるインフレータ接続部37と、ガスが流入せず膨張展開しない非膨張部38となどが設けられている。さらに、膨張部36には、第1の基布31と第2の基布32とを連結する複数の連結部40が形成されているとともに、各連結部40に対応して、第2の基布32により、それぞれ膨張部36に連通する袋状をなす複数のタック部42が形成されている。   That is, the airbag main body 30 includes a first base cloth 31 as a first base cloth part disposed on the vehicle interior side (inward B) and a second base cloth disposed on the vehicle body side (outward C). A second base fabric 32 as a base fabric portion, and the base fabrics 31 and 32 are overlapped and sewn together at the outer peripheral connecting portion 34, and a bag-like inflatable portion 36 that inflates and expands when gas flows in, An inflator connecting portion 37 that is a gas port communicating with the inflating portion 36, a non-inflating portion 38 in which gas does not flow in and inflated and deployed, and the like are provided. Further, a plurality of connecting portions 40 for connecting the first base fabric 31 and the second base fabric 32 are formed in the inflating portion 36, and a second base is provided corresponding to each connecting portion 40. The cloth 32 forms a plurality of tack portions 42 each having a bag shape communicating with the inflating portion 36.

そして、膨張部36は、中空部である気室であり、前席の乗員に対向して展開する前席保護部である第1の気室44、後席の乗員に対向して展開する後席保護部である第2の気室45、及びエアバッグ本体部30の上縁部に沿って前後方向を長手方向として設けられこれら気室44,45同士の上側部を連通させる連通路46を備えている。また、インフレータ接続部37は、膨張部36の前後方向の中央部の連通路46から上側に分岐して形成されている。   The inflating part 36 is an air chamber that is a hollow part, and the first air chamber 44 that is a front seat protection part that is deployed to face the front seat occupant, and the rear part that is deployed to face the rear seat occupant. A second air chamber 45 serving as a seat protection portion and a communication passage 46 provided along the upper edge portion of the airbag main body 30 with the front-rear direction as a longitudinal direction and communicating between the upper portions of the air chambers 44, 45 are provided. I have. Further, the inflator connecting portion 37 is formed by branching upward from the communication passage 46 in the central portion in the front-rear direction of the inflating portion 36.

そして、各基布31,32は、基布パネルとも呼ばれる平板状の織布で、必要に応じてコーティングが施されている。さらに、基布31,32同士を接結すなわち連結する外周連結部34及び連結部40は、基本的には縫製機械(ミシン)を用いて糸により基布31,32同士を直接密着した状態に縫製したもので、さらに、必要に応じてシール剤などを用い、略気密あるいは高度な気密に構成されている。そして、外周連結部34は、インフレータ20に連通するインフレータ接続部37の先端部を除いて膨張部36の外周を縫製し、乗員の保護領域である膨張部36を区画形成している。さらに、非膨張部38は、例えば、連通路46の下側、すなわち、第1の気室44と第2の気室45との間の通常乗員が対向しない位置に、例えば外側の第1の基布31のみの1枚の基布で構成されている。   Each base fabric 31, 32 is a flat woven fabric also called a base fabric panel, and is coated as necessary. Further, the outer peripheral connecting portion 34 and the connecting portion 40 for connecting, that is, connecting the base fabrics 31 and 32 are basically in a state in which the base fabrics 31 and 32 are directly in close contact with each other by a thread using a sewing machine. It is sewn and is configured to be substantially airtight or highly airtight using a sealant or the like as required. The outer periphery connecting portion 34 sews the outer periphery of the inflating portion 36 except for the front end portion of the inflator connecting portion 37 communicating with the inflator 20, thereby defining the inflating portion 36 which is a passenger protection area. Further, the non-inflatable portion 38 is provided, for example, at the lower side of the communication passage 46, that is, at a position where the normal occupant between the first air chamber 44 and the second air chamber 45 does not face, for example, the outer first It is composed of a single base fabric consisting of only the base fabric 31.

そして、連結部40は、基布31,32同士を連結してエアバッグ1の展開時の空気層の厚さ寸法すなわち衝撃吸収ストロークを規定するとともに、膨張部36のガスの流れを案内するもので、膨張部36の第1の気室44と第2の気室45とに位置し、例えば、第1の気室44の4カ所と、第2の気室45の2カ所とに、上下方向を長手方向とし線状さらには直線状をなし、上下の端部が外周連結部34から離間するように形成されている。そして、各連結部40同士の間の部分が、各気室44,45を構成するセルとなっている。   And the connection part 40 connects the base fabrics 31 and 32, prescribes | regulates the thickness dimension of the air layer at the time of expansion | deployment of the airbag 1, ie, an impact absorption stroke, and guides the gas flow of the expansion part 36 Thus, the first air chamber 44 and the second air chamber 45 of the inflating part 36 are positioned in, for example, four locations of the first air chamber 44 and two locations of the second air chamber 45. The direction is a longitudinal direction, which is linear or linear, and is formed so that the upper and lower end portions are separated from the outer peripheral coupling portion 34. And the part between each connection part 40 is a cell which comprises each air chamber 44,45.

さらに、タック部42は、各連結部40に対応し、各連結部40を覆うように形成されている。この構成では、各タック部42は、車体側に位置する第2の基布32に一体に形成されている。すなわち、第2の基布32には、各連結部40に隣接していわば谷折りの第1の折り線51が形成され、さらにこの第1の折り線51から所定寸法だけ離間した位置に、この第1の折り線51と平行に、いわば山折りとなる第2の折り線52が形成されて、各タック部42がそれぞれ各連結部40を覆うように波形に折り返されている。そして、各タック部42は、上下の端部に位置して、外周連結部34により構成されるタック保持部54により縫い合わされている。そして、このタック保持部54により、折り返した部分すなわち各タック部42自体が連結されているとともに、各タック部42が第2の基布32のいわば膨張部36の外殻に連結されている。そして、各タック部42の内側は、膨張部36に連通し、膨張部36を介してガスが供給されるようになっている。   Further, the tack portion 42 corresponds to each connecting portion 40 and is formed so as to cover each connecting portion 40. In this configuration, each tack portion 42 is formed integrally with the second base cloth 32 located on the vehicle body side. That is, in the second base fabric 32, a first fold line 51 that is a valley fold is formed adjacent to each connecting portion 40, and is further spaced from the first fold line 51 by a predetermined dimension. Parallel to the first fold line 51, a second fold line 52, which is a so-called mountain fold, is formed, and each tack portion 42 is folded back in a waveform so as to cover each connecting portion 40. Each tack portion 42 is stitched together by a tack holding portion 54 that is located at the upper and lower end portions and is constituted by the outer peripheral connection portion 34. The folded portions, that is, the respective tack portions 42 themselves are connected by the tack holding portion 54, and the respective tack portions 42 are connected to the outer shell of the expansion portion 36 of the second base fabric 32. The inside of each tack part 42 communicates with the inflating part 36, and gas is supplied through the inflating part 36.

また、図示しないが、これら基布31,32には、強度や耐熱を向上しあるいはガスを案内する基布が必要に応じて重ねられている。   Although not shown, the base fabrics 31 and 32 are overlapped with a base fabric for improving strength and heat resistance or guiding gas as needed.

一方、インフレータ20は、円柱状のインフレータ本体部を備え、このインフレータ本体部に、薬剤を燃焼させる燃焼式(パイロテクニックタイプ)、ガスを高圧で貯蔵する貯蔵式(ストレージタイプ)、あるいはこれら燃焼式と貯蔵式とを組み合わせたハイブリッド式などのガス発生手段が内蔵されている。そして、このインフレータ本体部の長手方向の一端部である前端部には、ガスを噴射するガス供給部が設けられ、インフレータ本体部の後端部には、ハーネスと呼ばれる電線が接続されるコネクタ部が設けられている。   On the other hand, the inflator 20 includes a cylindrical inflator main body, and in this inflator main body, a combustion type for burning chemicals (pyro technique type), a storage type for storing gas at high pressure (storage type), or these combustion types A gas generating means such as a hybrid type combining a storage type and a storage type is incorporated. And the gas supply part which injects gas is provided in the front-end part which is the one end part of the longitudinal direction of this inflator main-body part, and the connector part to which the electric wire called a harness is connected to the rear-end part of an inflator main-body part Is provided.

さらに、エアバッグ装置は、車体側に、センサなどを備えた図示しない制御装置を備え、この制御装置が、ハーネスを介してインフレータ20に電気的に接続されている。   Further, the airbag device includes a control device (not shown) provided with a sensor or the like on the vehicle body side, and this control device is electrically connected to the inflator 20 via a harness.

次に、このエアバッグ1の製造工程、エアバッグ装置の組立工程、及び車体への取付工程を説明する。   Next, the manufacturing process of this airbag 1, the assembly process of an airbag apparatus, and the attachment process to a vehicle body are demonstrated.

まず、エアバッグ1は、各基布31,32を原反から切り出す。各基布31,32を原反から切り出して平面状に広げた状態では、第1の基布31に対し、第2の基布32は前後方向の長さ寸法が大きく形成されている。そして、この第2の基布32を第1の基布31に重ね、基布31,32を縫製して1カ所に連結部40を形成するとともに、この連結部40の近傍で第2の基布32を上方に折り、タック部42を形成していく。そして、全ての連結部40及びタック部42を形成した状態で、これら基布31,32の平面形状は、非膨張部38の部分を除いてほぼ同様となる。   First, the airbag 1 cuts out each base fabric 31 and 32 from a raw fabric. In a state in which each base cloth 31 and 32 is cut out from the original fabric and spread in a planar shape, the second base cloth 32 is formed to have a larger length in the front-rear direction than the first base cloth 31. Then, the second base cloth 32 is overlapped with the first base cloth 31, and the base cloths 31, 32 are sewn to form a connecting portion 40 at one place, and the second base cloth 32 is formed in the vicinity of the connecting portion 40. The cloth 32 is folded upward to form the tack portion 42. Then, in the state where all of the connecting portions 40 and the tack portions 42 are formed, the planar shapes of the base fabrics 31 and 32 are substantially the same except for the portion of the non-inflatable portion 38.

次いで、各タック部42を連結部40の上に倒し込み、連結部40を覆うように重ねた状態で、各基布31,32の外周部に沿って縫製し、膨張部36を構成する外周連結部34を形成すると同時に、この外周連結部34で各タック部42の端部を固定し、すなわち各タック部42の端部を保持するタック保持部54を形成することにより、エアバッグ1が構成される。   Next, the tuck portions 42 are brought down on the connecting portions 40 and are sewed along the outer peripheral portions of the respective base fabrics 31 and 32 in a state where the tuck portions 42 are overlapped so as to cover the connecting portions 40. At the same time as forming the connecting portion 34, the end portion of each tack portion 42 is fixed by the outer peripheral connecting portion 34, that is, by forming the tack holding portion 54 that holds the end portion of each tack portion 42, the airbag 1 is formed. Composed.

そして、このエアバッグ1のエアバッグ本体部30を所定の細長い形状に折り畳み、形状保持部材を用いて折り畳み形状を保持する。このエアバッグ本体部30の折畳方法は、種々の方法を採ることができるが、例えば、エアバッグ本体部30を平面状に広げた状態から、展開時の下側部を渦巻き状すなわちロール状に折り畳んで集積部を形成するとともに、展開時の上側部は波形すなわち蛇腹状に折り畳んだ案内部とし、この案内部で集積部の上側部から両側部まで包むように折り畳む。なお、例えば、集積部は、エアバッグ本体部30を下端部から外側すなわち所定面E側に巻き上げるように巻回している。また、案内部は、連通路46を含む部分であり、上側部を車室側に折り線が向くように折返し、下側部を車外側に折り線が向くように折返して構成されている。   Then, the airbag main body 30 of the airbag 1 is folded into a predetermined elongated shape, and the folded shape is held using the shape holding member. Various methods can be used for folding the airbag main body 30. For example, the airbag main body 30 is expanded in a flat shape, and the lower side when deployed is spiral, that is, rolled. The upper part at the time of unfolding is formed into a corrugated shape, that is, a bellows-like guide part, and the guide part is folded so as to wrap from the upper part of the stack part to both side parts. For example, the stacking unit winds the airbag body 30 so as to wind up from the lower end to the outside, that is, the predetermined surface E side. Further, the guide portion is a portion including the communication path 46, and is configured by folding the upper side portion so that the fold line faces the vehicle compartment side and folding the lower side portion so that the fold line faces the vehicle outer side.

そして、折り畳んだエアバッグ1に、ブラケット及びプロテクタを取り付け、さらに、インフレータ接続部37にインフレータ20を接続し、エアバッグ装置の組立状態であるモジュールが構成される。   Then, a bracket and a protector are attached to the folded airbag 1, and the inflator 20 is connected to the inflator connecting portion 37 to constitute a module that is an assembled state of the airbag device.

そして、このエアバッグ装置のモジュールを車室内に持ち込み、エアバッグ1をルーフサイド部に沿って配置するとともに、ブラケットをルーフサイドレールの所定位置に固定する。また、エアバッグ1の前端部の吊り紐の先端の取付金具をフロントピラーに取り付ける。さらに、インフレータ20をリテーナを用いて車体に取り付けるとともに、インフレータ20から導出されたハーネスを車体に備えた制御装置に接続する。そして、各ピラーにピラーガーニッシュを取り付け、車体の天井パネルにルーフトリムを取り付け、このルーフトリムでエアバッグ装置を覆うことにより、エアバッグ装置の車体のルーフサイド部への取付作業が完了する。   Then, the module of the airbag device is brought into the passenger compartment, the airbag 1 is disposed along the roof side portion, and the bracket is fixed to a predetermined position of the roof side rail. In addition, the attachment fitting at the tip of the hanging strap at the front end of the airbag 1 is attached to the front pillar. Further, the inflator 20 is attached to the vehicle body using a retainer, and the harness derived from the inflator 20 is connected to a control device provided in the vehicle body. Then, the pillar garnish is attached to each pillar, the roof trim is attached to the ceiling panel of the vehicle body, and the airbag device is covered with the roof trim, thereby completing the operation of attaching the airbag device to the roof side portion of the vehicle body.

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20が作動し、このインフレータ20から噴射されるガスがエアバッグ本体部30の膨張部36内に導入される。このガスは、案内部に位置する連通路46を介して前後の端部まで円滑迅速に供給される。この状態で、通気抵抗が小さく迅速に展開する形状である波状に折られた案内部が膨張して、下側に位置する集積部を下方に押し出す。すなわち、形状保持部材が開裂し、さらに、ルーフトリムを下方に押し開いて、エアバッグ1のエアバッグ本体部30がルーフサイド部から下方に迅速に突出する。   In the event of a side collision or rollover of the vehicle, the inflator 20 is actuated by the control device, and the gas injected from the inflator 20 is introduced into the inflating portion 36 of the airbag main body 30. This gas is smoothly and rapidly supplied to the front and rear end portions through the communication path 46 located in the guide portion. In this state, the wavy guide portion having a small ventilation resistance and a shape that rapidly expands expands, and pushes down the accumulation portion positioned below. That is, the shape retaining member is cleaved, and further, the roof trim is pushed downward, so that the airbag main body 30 of the airbag 1 rapidly protrudes downward from the roof side portion.

次いで、ガスは、連結部40に案内されて膨張部36の各セルを下方に向かって供給され、この連結部40すなわちセルが位置して若干通気抵抗が大きい形状であるロール状に折りたたまれた集積部が、車室の側部内面である所定面Eをこすりながら巻き戻されるように所定面Eに沿った所定方向である略下方に展開し、いわば車室の側部に沿ってカーテン状に膨張展開して、前後の窓部や各ピラーなどを覆う。   Next, the gas is guided to the connecting portion 40 and supplied downward to each cell of the inflating portion 36, and the connecting portion 40, that is, the cell is positioned and folded into a roll shape having a slightly large ventilation resistance. The accumulating portion develops substantially downward in a predetermined direction along the predetermined surface E so as to be rewound while rubbing the predetermined surface E which is the side inner surface of the vehicle interior, so to speak, a curtain shape along the side of the vehicle interior It expands and expands to cover the front and rear windows and each pillar.

この膨張部36の膨張と同時に、膨張部36から各タック部42の内側にガスが供給され、各タック部42は所定面E側に向かい膨張展開する。ここで、各タック部42は、連結部40を覆う部分に隣接するタック保持部54で位置を保持されているため、図3に示すように、各連結部40を覆った状態で展開する。そこで、各連結部40の位置においても、一定の厚さ寸法の空気層が確保され、いわゆるゼロストローク地帯をなくし、基布31,32同士を連結部40で連結したエアバッグ1における連結部40の位置での衝撃吸収ストロークが容易に確保される。   Simultaneously with the expansion of the expansion portion 36, gas is supplied from the expansion portion 36 to the inside of each tack portion 42, and each tack portion 42 expands and develops toward the predetermined surface E side. Here, the positions of the tack portions 42 are held by the tack holding portions 54 adjacent to the portions covering the connecting portions 40, and therefore, the tack portions 42 are deployed in a state of covering the connecting portions 40 as shown in FIG. Therefore, even at the position of each connecting portion 40, an air layer having a constant thickness is secured, so-called zero stroke zone is eliminated, and the connecting portion 40 in the airbag 1 in which the base fabrics 31, 32 are connected by the connecting portion 40. The shock absorbing stroke at the position is easily secured.

このように、本実施の形態によれば、エアバッグ1を車体のルーフサイド部に取り付けられ所定面Eに沿って膨張展開するいわゆるカーテンエアバッグ装置のエアバッグ1について、第1の気室44が前席の乗員の着座位置の側方に対向する保護領域内の全域で必要な厚さ寸法を確保しつつ迅速に展開し、第2の気室45が後席の乗員の着座位置の側方に対向する保護領域内の全域で必要な厚さ寸法を確保しつつ迅速に展開して、前席及び後席の各乗員の頭部、胸部などを保護するように展開し、乗員を効果的に保護できる。   Thus, according to the present embodiment, the first air chamber 44 is used for the airbag 1 of the so-called curtain airbag device that is attached to the roof side portion of the vehicle body and inflated and deployed along the predetermined surface E. Deploys quickly while ensuring the necessary thickness across the entire protection area facing the side of the front seat occupant's seating position, and the second air chamber 45 is located on the side of the rear seat occupant's seating position. Rapidly deploying while securing the necessary thickness dimensions in the entire protection area facing the passenger, and deploying to protect the head and chest of each front and rear seat occupant. Can be protected.

すなわち、本実施の形態のエアバッグ1によれば、内側にガスが導入される膨張部36は、連結部40により全体としての厚さ寸法が規制され、扁平に展開する形状を実現できるとともに、膨張部36の膨張時には、タック保持部54によりタック部42が傾斜するように連結部40を覆って膨張する状態が保持され、膨張したタック部42により連結部40の部分での衝撃吸収ストロークを確保して、保護領域の全体での衝撃吸収特性を向上できる。   That is, according to the airbag 1 of the present embodiment, the inflatable portion 36 into which the gas is introduced inside can be realized in a flattened shape, with the overall thickness dimension being restricted by the connecting portion 40, When the inflating part 36 is inflated, the tack holding part 54 holds the connecting part 40 so that the tacking part 42 is inclined, and the inflated tack part 42 expands the shock absorbing stroke at the part of the connecting part 40. It is possible to secure and improve the shock absorption characteristics in the entire protection area.

また、タック部42は、基布、ここでは第2の基布32を膨張部36の外側方に折り重ね、タック保持部42で形状を保持して形成でき、構成が簡略で製造コストを低減できる。さらに、タック部42は、線状さらには直線状をなす連結部40に近接しかつ連結部40に平行な第1の折り線51及びこの第1の折り線51と平行な第2の折り線52により第2の基布32を折り返して形成され、タック保持部54は、外周連結部34に一体に構成されたため、構成が簡略で製造工程の簡略化が可能であり、製造コストを低減できる。   In addition, the tack portion 42 can be formed by folding the base fabric, here the second base fabric 32, on the outer side of the inflatable portion 36 and holding the shape by the tack holding portion 42, thus simplifying the configuration and reducing manufacturing costs. it can. Further, the tack portion 42 includes a first fold line 51 that is close to the connecting portion 40 that is linear or linear, and is parallel to the connecting portion 40, and a second fold line that is parallel to the first fold line 51. Since the second base fabric 32 is folded back by 52 and the tack holding portion 54 is formed integrally with the outer peripheral connecting portion 34, the configuration is simple, the manufacturing process can be simplified, and the manufacturing cost can be reduced. .

また、タック部42は、連結部40の近傍にのみ形成すれば良く、タック部42の長さ分の増分を加えた2枚のパネルを基本とするため、基布31,32の使用量を最小限に抑制し、エアバッグ1の全体を3枚以上の基布を重ねて形成する構成に比べ、基布31,32の使用量を削減し、製造コストを低減できるとともに、小さく折り畳むことが容易になる。   Moreover, the tack part 42 should just be formed only in the vicinity of the connection part 40, and since it is based on two panels which added the increment for the length of the tack part 42, the usage-amount of the base fabrics 31 and 32 is reduced. Compared to a configuration in which the entire airbag 1 is formed by stacking three or more base fabrics, the usage amount of the base fabrics 31 and 32 can be reduced, the manufacturing cost can be reduced, and the airbag 1 can be folded in a small size. It becomes easy.

また、タック部42は、連結部40のみを覆う形状に形成すれば良く、追加的に膨張させる部分の容量を最小限として、ガスの使用量の増加を抑制し、インフレータ20の能力を大幅に高める必要はなく、エアバッグ装置の製造コストの上昇を抑制できる。   In addition, the tack part 42 only needs to be formed in a shape that covers only the connecting part 40, and the capacity of the additional inflator 20 is suppressed by minimizing the capacity of the part that is additionally inflated, thereby greatly increasing the capacity of the inflator 20. There is no need to increase it, and an increase in the manufacturing cost of the airbag device can be suppressed.

また、タック部42は、膨張部36から外側方に向かって突出して形成され、膨張部36の内部が必要以上に仕切られることがないため、膨張部36の内部のガスの流れを規制せず、膨張部36の全域にガスを充填し易く、膨張部36の末端部まで迅速にガスを供給可能で、折畳形状が指向する展開特性を阻害せず、膨張部36の円滑迅速な展開を容易に実現できる。   Further, the tack portion 42 is formed to protrude outward from the inflating portion 36, and since the inside of the inflating portion 36 is not partitioned more than necessary, the flow of gas inside the inflating portion 36 is not restricted. It is easy to fill the entire area of the expansion part 36, can supply gas quickly to the end of the expansion part 36, and does not hinder the expansion characteristics directed by the folded shape, and can smoothly expand the expansion part 36 It can be easily realized.

また、連結部36は、基布31,32同士を直接に連結する構成で良く、通常の縫製用ミシンのエアバッグ1外部からの縫製作業で製造可能であり、いわゆるジャガード織りにより外殻に一体に形成する構成や、膨張部分の内側に基布同士を所定の間隔で連結するテザーを設ける構成に比べ、大規模あるいは複雑など高価な機器を必要とせず、構成及び縫製による製造工程を簡略にして、製造コストを低減できる。   The connecting portion 36 may be configured to directly connect the base fabrics 31 and 32, and can be manufactured by a sewing operation from the outside of the airbag 1 of a normal sewing machine, and is integrated with the outer shell by so-called jacquard weaving. Compared to the configuration of forming the tether and the tether that connects the base fabrics at a predetermined interval inside the inflated portion, it does not require expensive equipment such as large-scale or complicated, and simplifies the manufacturing process by configuration and sewing. Manufacturing costs can be reduced.

さらに、タック部42は、反乗員側すなわち車体側である所定面E側に位置する第2の基布32のみに設けたため、乗員側の第1の基布31を平坦な傾向で展開させて、タック部42が乗員に干渉することを防止できる。   Furthermore, since the tack portion 42 is provided only on the second base cloth 32 positioned on the side opposite to the occupant, that is, on the predetermined surface E side which is the vehicle body side, the first base cloth 31 on the occupant side is developed with a flat tendency. The tuck portion 42 can be prevented from interfering with the occupant.

さらに、タック部42をいずれか一方の基布31,32のみに設けることにより、タック部42のミシン縫製をエアバッグ1の一面から行うことが可能になり、製造工程を簡略化して製造コストを低減できるとともに、エアバッグ1の展開時にエアバッグ1が反り変形する傾向、すなわち反るように展開する傾向を利用して、所定面Eの一部に沿わせ、一部からは積極的に離間させるなど、エアバッグ1を所望の特性で展開させることが可能になる。   Furthermore, by providing the tack part 42 only on one of the base fabrics 31 and 32, the sewing of the tack part 42 can be performed from one side of the airbag 1, and the manufacturing process is simplified and the manufacturing cost is reduced. In addition to being able to reduce, the airbag 1 is warped and deformed when the airbag 1 is deployed. For example, the airbag 1 can be deployed with desired characteristics.

なお、上記の実施の形態では、タック部42は、反乗員側の第2の基布32のみに設けたが、この構成に限られるものではない。   In the above-described embodiment, the tack portion 42 is provided only on the second base fabric 32 on the side opposite to the occupant, but is not limited to this configuration.

すなわち、タック部42を、乗員側すなわち車室側である反所定面E側に位置する第1の基布31のみに設けることにより、車体側の第2の基布32を平坦な傾向で展開させて、タック部42が所定面E側の車体の部材に干渉することを防止し、エアバッグ1の円滑迅速な展開を容易にできる。膨張部36に比較して、ガスが流入しにくく、緩やかに膨張するタック部42を乗員に位置させることにより、乗員に対するエアバッグ1の反力を容易に小さく調整できる。   That is, by providing the tack portion 42 only on the first base cloth 31 located on the occupant side, that is, on the side opposite to the predetermined surface E that is the passenger compartment side, the second base cloth 32 on the vehicle body side is deployed with a flat tendency. Thus, the tack portion 42 can be prevented from interfering with the vehicle body member on the predetermined surface E side, and the airbag 1 can be easily and quickly deployed. Compared with the inflatable portion 36, the reaction force of the airbag 1 against the occupant can be easily adjusted to be small by positioning the tack portion 42 that hardly inflows of gas and is gently inflated on the occupant.

また、タック部42は、エアバッグ1の両面、すなわち第1の基布31と第2の基布32との両面に設けることもできる。例えば、図4に示す第2の実施の形態のように、タック部42を、第1の基布31と第2の基布32とに交互に設け、いわばタック部42を、エアバッグ1の両面すなわち第1の基布31と第2の基布32とに相補的に配列させることもできる。   Further, the tack portion 42 can be provided on both surfaces of the airbag 1, that is, both surfaces of the first base fabric 31 and the second base fabric 32. For example, as in the second embodiment shown in FIG. 4, the tack portions 42 are alternately provided on the first base fabric 31 and the second base fabric 32, so that the tack portions 42 of the airbag 1 are provided. It is also possible to arrange them on both sides, that is, the first base fabric 31 and the second base fabric 32 in a complementary manner.

この図4に示す構成では、第1の基布31と第2の基布32との形状を通常の大きさの形状の基布に近似させ、基布の原反からの材料取りの効率を容易に向上でき、製造コストを低減できる。すなわち、いずれか一方の基布31,32のみにタック部42を設定する場合には、通常の大きさの形状の基布と、長手寸法が大きい形状の基布とを原反から切り出すことになり、原反の大きさによっては、原反から効率よく基布31,32を切り出すことが困難になるが、第1の基布31と第2の基布32との形状を通常の大きさの形状の基布に近似させることにより、従来の原反から容易に効率良く基布を取り出すことができる。   In the configuration shown in FIG. 4, the shape of the first base fabric 31 and the second base fabric 32 is approximated to a base fabric of a normal size, and the efficiency of material removal from the base fabric is improved. It can be improved easily and the manufacturing cost can be reduced. That is, when the tack portion 42 is set only on one of the base fabrics 31 and 32, a base fabric having a normal size and a base fabric having a large longitudinal dimension are cut out from the original fabric. Thus, depending on the size of the original fabric, it becomes difficult to efficiently cut out the base fabrics 31 and 32 from the original fabric, but the shape of the first base fabric 31 and the second base fabric 32 is set to a normal size. By approximating the shape of the base fabric, the base fabric can be easily and efficiently removed from the conventional raw fabric.

また、タック部42を、エアバッグ1の両面すなわち第1の基布31と第2の基布32とに相補的に配列したため、エアバッグ1の両面側にタック部42が偏らずに配置され、エアバッグ1の膨張展開時の反り変形を抑制し、容易に安定して展開させることができる。   Further, since the tack portion 42 is complementarily arranged on both surfaces of the airbag 1, that is, the first base fabric 31 and the second base fabric 32, the tack portion 42 is disposed on both surfaces of the airbag 1 without being biased. The warp deformation at the time of inflation and deployment of the airbag 1 can be suppressed, and the airbag 1 can be easily and stably deployed.

なお、この図4に示す構成では、インフレータ接続部37は、膨張部36の後端上部に接続されている。   In the configuration shown in FIG. 4, the inflator connecting portion 37 is connected to the rear end upper portion of the inflating portion 36.

また、タック部42を、エアバッグ1の両面にどのように配置するか、あるいは、エアバッグ1の長手方向あるいはガスが流れる方向に対して何れの方向に折り返して保持するかは、エアバッグ1の全体の形状などに応じて設定することができる。   In addition, how the tack portion 42 is arranged on both surfaces of the airbag 1, or in which direction the airbag 1 is folded and held with respect to the longitudinal direction of the airbag 1 or the direction in which the gas flows is determined by the airbag 1. It can be set according to the overall shape and the like.

例えば、図5に示す第3の実施の形態のように、一のタック部42に対して、他のタック部42を、エアバッグ1の長手方向である前後方向に対して反対側に折返し、タック保持部54で保持することができる。   For example, as in the third embodiment shown in FIG. 5, with respect to one tack portion 42, the other tack portion 42 is folded back on the opposite side with respect to the longitudinal direction of the airbag 1, It can be held by the tack holder 54.

また、一の連結部40に対して、エアバッグ1の両面すなわち第1の基布31と第2の基布32とに対をなすタック部42,42を設けることもできる。この対をなすタック部42,42は、図6に示す第4の実施の形態のように、同じ方向に折り返しても良く、図7に示す第5の実施の形態のように、互いに異なる方向すなわち反対側に折り返しても良い。また、図8に示す第6の実施の形態のように、対をなすタック部42,42について、互いに形状すなわち容量を異ならせることもできる。   In addition, tack portions 42, 42 that form a pair on both surfaces of the airbag 1, that is, the first base fabric 31 and the second base fabric 32, can be provided for one connecting portion 40. The paired tack portions 42, 42 may be folded back in the same direction as in the fourth embodiment shown in FIG. 6, and are different from each other as in the fifth embodiment shown in FIG. That is, it may be folded back to the opposite side. Further, as in the sixth embodiment shown in FIG. 8, the pairs of tack portions 42, 42 can have different shapes, that is, capacities.

さらに、タック保持部54は、外周連結部34に一体に形成する構成に代えて、あるいは外周連結部34に一体に形成する構成とともに、他の構成を採ることもできる。例えば、図9に示す第7の実施の形態のように、外周連結部34に一体に形成したタック保持部54に加え、タック部42の先端部、すなわち第2の折り線52の部分を縫製して第2の基布32同士を連結するタック保持部56を設け、タック部42の展開形状が上下方向の中央部分においても扁平となるように調整することもできる。   Further, the tack retaining portion 54 may take another configuration in addition to the configuration formed integrally with the outer peripheral connection portion 34 or together with the configuration formed integrally with the outer peripheral connection portion 34. For example, as in the seventh embodiment shown in FIG. 9, in addition to the tack holding portion 54 formed integrally with the outer peripheral coupling portion 34, the tip end portion of the tack portion 42, that is, the second folding line 52 is sewn. In addition, a tack holding portion 56 that connects the second base fabrics 32 may be provided, and the developed shape of the tack portion 42 may be adjusted to be flat at the central portion in the vertical direction.

なお、この図9に示す構成では、連結部40は、一端部40aは外周連結部34から離間しガスの流路を形成するとともに、他端部40bは外周連結部34に到達し、ガスが流れないようにセルの端部を閉じた状態としている。   In the configuration shown in FIG. 9, the connecting portion 40 has one end portion 40a spaced from the outer peripheral connecting portion 34 to form a gas flow path, and the other end portion 40b reaches the outer peripheral connecting portion 34, so that the gas flows. The end of the cell is closed so that it does not flow.

また、上記の実施の形態では、エアバッグ1は独立した2枚の基布31,32を用いて形成したが、例えば、エアバッグ本体部30の前端部で連結した1枚の基布を用い、この前端部で折り返して構成することもできる。   In the above embodiment, the airbag 1 is formed using two independent base fabrics 31 and 32. For example, a single base fabric connected at the front end of the airbag main body 30 is used. In addition, the front end portion can be folded back.

本発明は、例えば、自動車の側部の窓部に沿ってエアバッグを展開し乗員の頭部を保護す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 device that deploys an airbag along a window on a side portion of an automobile and protects the head of an occupant.

1 エアバッグ
31 第1の基布部としての第1の基布
32 第2の基布部としての第2の基布
34 外周連結部
36 膨張部
40 連結部
42 タック部
51 第1の折り線
52 第2の折り線
54,56 タック保持部
E 所定面
1 Airbag
31 First base fabric as the first base fabric
32 Second base fabric as second base fabric
34 Outer connection
36 Expansion part
40 connection
42 Tack part
51 First fold line
52 Second fold line
54, 56 Tack holder E Specified surface

Claims (5)

折り畳まれた状態からガスが導入され所定面に沿って扁平に膨張展開するエアバッグであって、
第1の基布部と、
この第1の基布部に重ねて配置される第2の基布部と、
これら第1の基布部と第2の基布部とを接合し、内側にガスが導入される膨張部を区画形成する外周連結部と、
この外周連結部によって区画形成された前記膨張部に位置して前記第1の基布部と第2の基布部とを直接に連結して前記膨張部の展開時の空気層の厚さ寸法を規制する連結部と、
前記基布部の少なくとも一方の前記膨張部に位置する部分を前記膨張部の外側方に折り重ねこの膨張部に位置する前記連結部を覆うとともに前記膨張部からガスが導入されるタック部と、
このタック部の一部で基布部同士を連結し前記タック部の形状を保持するタック保持部とを具備する
ことを特徴とするエアバッグ。
An airbag in which gas is introduced from a folded state and inflated and deployed flat along a predetermined surface,
A first base fabric part;
A second base fabric portion arranged to overlap the first base fabric portion;
An outer peripheral connecting portion that joins the first base fabric portion and the second base fabric portion, and defines an inflating portion into which gas is introduced inside, and
The thickness dimension of the air layer when the expansion portion is deployed by directly connecting the first base fabric portion and the second base fabric portion at the expansion portion defined by the outer peripheral connection portion. A connecting part that regulates ,
A tack portion into which gas is introduced from the inflating portion while folding a portion located in the inflating portion of at least one of the base cloth portions outwardly of the inflating portion to cover the connecting portion located in the inflating portion;
An airbag comprising: a tack retaining portion that connects base fabric portions with a part of the tack portion and retains the shape of the tack portion.
連結部は、線状をなし、
タック部は、前記連結部に近接しかつ前記連結部に平行な第1の折り線及びこの第1の折り線と平行な第2の折り線により基布部を折り返して形成され、
タック保持部は、外周連結部により構成された
ことを特徴とする請求項1記載のエアバッグ。
The connecting part is linear,
The tack portion is formed by folding back the base fabric portion by a first fold line that is close to the connecting portion and parallel to the connecting portion and a second fold line that is parallel to the first fold line,
The airbag according to claim 1, wherein the tack holding portion is configured by an outer peripheral connection portion.
タック部は、反被保護物側に位置する基布部のみに設けられた
ことを特徴とする請求項1または2記載のエアバッグ。
The airbag according to claim 1 or 2, wherein the tack portion is provided only on the base fabric portion located on the side of the object to be protected.
タック部は、被保護物側に位置する基布部のみに設けられた
ことを特徴とする請求項1または2記載のエアバッグ。
The airbag according to claim 1 or 2, wherein the tack portion is provided only on the base fabric portion located on the protected object side.
タック部は、第1の基布部及び第2の基布部に交互に設けられた
ことを特徴とする請求項1または2記載のエアバッグ。
The airbag according to claim 1 or 2, wherein the tack portions are alternately provided on the first base fabric portion and the second base fabric portion.
JP2009207132A 2009-09-08 2009-09-08 Airbag Expired - Fee Related JP5361065B2 (en)

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JP5746666B2 (en) * 2012-07-06 2015-07-08 オートリブ ディベロップメント エービー Curtain airbag for vehicle and mounting structure thereof
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KR101724962B1 (en) * 2015-12-09 2017-04-10 현대자동차주식회사 Curtain airbag for vehicle

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