JP3993324B2 - Airbag device - Google Patents

Airbag device Download PDF

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Publication number
JP3993324B2
JP3993324B2 JP29074098A JP29074098A JP3993324B2 JP 3993324 B2 JP3993324 B2 JP 3993324B2 JP 29074098 A JP29074098 A JP 29074098A JP 29074098 A JP29074098 A JP 29074098A JP 3993324 B2 JP3993324 B2 JP 3993324B2
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JP
Japan
Prior art keywords
airbag
base fabric
deployed
vehicle body
restraint surface
Prior art date
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Expired - Lifetime
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JP29074098A
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Japanese (ja)
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JP2000118341A (en
Inventor
健 甲斐
等 樋口
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Priority to JP29074098A priority Critical patent/JP3993324B2/en
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Description

【０００１】
【発明の属する技術分野】
本発明は、車両の衝突時にインフレータが発生する高圧ガスでエアバッグを車室内に展開させて乗員を拘束するエアバッグ装置に関する。
【０００２】
【従来の技術】
かかるエアバッグ装置のエアバッグは所定形状に裁断した基布を縫製したものであり、乗員を効果的に拘束できる形状に展開するように基布の裁断形状が考慮されている。しかしながら、基布の張力だけでエアバッグを所望の形状に展開することは難しく、インフレータから供給される高圧ガスの圧力で乗員拘束面が波打つように振動して形状が安定しない場合がある。そこで従来は、エアバッグの内面の基端部および先端部間を帯状の布片よりなるテザーで連結し、エアバッグの展開時に前記テザーが突っ張る張力でエアバッグの形状を安定させるようにしていた。
【０００３】
【発明が解決しようとする課題】
しかしながら、エアバッグにテザーを設けると部品点数が増加するだけでなく、その縫製工数も増加するためにコストアップの要因となる問題がある。
【０００４】
本発明は前述の事情に鑑みてなされたもので、テザーを用いることなくエアバッグの展開形状を安定させることを目的とする。
【０００５】
【課題を解決するための手段】
上記目的を達成するために、請求項１に記載された発明は、裁断した基布を縫製してなり、その内部にテザーを持たないエアバッグを自動車の助手席シートの前方に位置するインストルメントパネルの内部に折り畳み状態で収納し、インフレータが発生する高圧ガスで膨張するエアバッグを助手席シートに着座した乗員に向けて車体後方に展開するエアバッグ装置であって、展開したエアバッグの展開方向先端に位置する乗員拘束面を通る高さの異なる複数の水平断面における周長が異なるように前記基布を縫製することにより、該エアバッグの前記乗員拘束面を通る鉛直断面を、上部および下部が車体後方に突出して中央部が車体前方に凹んだ波形に形成したことを特徴とする。
【０００６】
上記構成によれば、助手席シートに着座した乗員に向けて車体後方に展開するエアバッグの展開方向先端に位置する乗員拘束面を通る高さの異なる複数の水平断面における周長が異なるようにエアバッグの基布を縫製したので、エアバッグの乗員拘束面は周長の短い中央部で車体前方に凹んで周長の長い上部および下部で車体後方に突出し、前記乗員拘束面を通る鉛直断面が波形になる。而して、エアバッグの展開時に周長の短い部分が最初に緊張してテザーが突っ張った状態と同じ状態になり、続いて周長の長い部分が膨張してエアバッグの展開が完了するため、テザーを設けることなくエアバッグの展開時における形態を安定させることができる。
【０００７】
【発明の実施の形態】
以下、本発明の実施の形態を、添付図面に示した本発明の実施例に基づいて説明する。
【０００８】
図１〜図５は本発明の第１実施例を示すもので、図１はエアバッグ装置を備えた自動車の助手席の側面図、図２は展開したエアバッグの斜視図、図３は図２の３方向矢視図、図４は図２の４方向矢視図、図５はエアバッグの基布の展開図である。
【０００９】
図１に示すように、自動車の助手席用シート１の前方に位置するインストルメントパネル２の内部に、自動車の衝突時にシート１に座った乗員を拘束するためのエアバッグ装置３が設けられる。エアバッグ装置３は、自動車の衝突の衝撃を検出する加速度センサ４からの信号で点火して高圧ガスを発生するインフレータ５と、インフレータ５が発生する高圧ガスで膨張し、インストルメントパネル２の上面に設けたリッド６を押し開いて車室内に展開するエアバッグ７とから構成される。
【００１０】
図２〜図５に示すように、エアバッグ７は３ピース構造であって、左右対称な形状の２枚の側部基布８，８と、これら側部基布８，８に縫製ラインＳ1 ，Ｓ1 で一体に縫製される１枚の中央基布９とから構成される。エアバッグ７の展開方向先端に設けられて乗員を拘束する乗員拘束面７1 は、その上部および下部が車体後方に突出し、その中央部が車体前方に凹んだ波形に形成されている。即ち、エアバッグ７の乗員拘束面７1 の展開方向への突出量は下部において大きく、中間部において小さく、上部において中位になる。尚、側部基布８，８に形成された小孔は余剰のガスを排出するためのベントホール７2 ，７2 である。
【００１１】
中央基布９は概略帯状に裁断されており、乗員拘束面７1 に臨む中央部が一定幅で両端部が幅狭にテーパーしている。各々の側部基布８は概略三角形に裁断されており、乗員拘束面７1 に臨む部分は２つの凸部８1 ，８3 と１つの凹部８2 とが連続する波形になっている。エアバッグ７を縫製ラインＳ1 ，Ｓ1 で縫製したとき、エアバッグ７の異なる３つの高さにおける周長はそれぞれＡ，Ｂ，Ｃとなる。
【００１２】
図５から明らかなように、エアバッグ７の上部の周長Ａは２Ａ1 ＋Ａ2 であり、同様に中央部の周長Ｂは２Ｂ1 ＋Ｂ2 であり、下部の周長Ｃは２Ｃ1 ＋Ｃ2 である。周長Ａ，Ｂ，Ｃの一部を構成する中央基布９の幅Ａ2 ，Ｂ2 ，Ｃ2 は同一であるが、側部基布８の幅Ａ1 ，Ｂ1 ，Ｃ1 はＢ1 ＜Ａ1 ＜Ｃ1 であるため、エアバッグ７の上部、中央部および下部の周長Ａ，Ｂ，ＣはＢ＜Ａ＜Ｃの関係を持つ。このようにエアバッグ７の中央の高さにおける周長Ｂがその上下の周長Ａ，Ｃよりも小さくなっているので、エアバッグ７の展開時に、最も短い周長Ｂを有する上下方向中央部が最初に緊張してテザーが突っ張った状態と同じ状態になり、続いて周長Ａを有する上部と周長Ｃを有する下部とが膨張してエアバッグ７の展開が完了する。而して、テザーを設けることなくエアバッグ７の展開時における形態を安定させることができる。
【００１３】
次に、図６および図７に基づいて本発明の第２実施例を説明する。
【００１４】
第２実施例のエアバッグ７も、左右対称な形状の２枚の側部基布８，８と、これら側部基布８，８に縫製ラインＳ1 ，Ｓ1 で一体に縫製される１枚の中央基布９とから構成された３ピース構造であって、エアバッグ７の乗員拘束面７1 の形状は、第１実施例と同様に上部および下部が車体後方に突出し中央部が車体前方に凹んだ波形に形成されている。概略三角形の側部基布８の乗員拘束面７1 に臨む部分は円弧状に裁断されており、その上部、中央部および下部の周長Ａ，Ｂ，Ｃの一部を構成する幅Ａ1 ，Ｂ1 ，Ｃ1 はＡ1 ＝Ｂ1 ＝Ｃ1 になっている。一方、概略帯状の中央基布９の乗員拘束面７1 に臨む部分は両側縁に凹部９1 ，９1 が形成されて細幅になっており、上部、中央部および下部の周長Ａ，Ｂ，Ｃの一部を構成するＡ2 ，Ｂ2 ，Ｃ2 の長さはＢ2 ＜Ａ2 ＝Ｃ2 になっている。その結果、エアバッグ７の上部、中央部および下部の周長Ａ，Ｂ，ＣはＢ＜Ａ＝Ｃの関係を持ち、エアバッグ７の展開時に最も短い周長Ｂを有する中央部が最初に緊張してテザーと同じ機能を発揮し、エアバッグ７の展開時における形態を安定させることができる。
【００１５】
次に、図８および図９に基づいて本発明の第３実施例を説明する。
【００１６】
第３実施例のエアバッグ７は２ピース構造であって、上部基布１０および下部基布１１から構成される。上部基布１０は本体部１０1 と先端部１０2 とから構成され、それらを縫製ラインＳ3 ，Ｓ3 で縫製することにより上部基布１０に立体的な形状が与えられる。同様に下部基布１１は本体部１１1 と先端部１１2 とから構成され、それらを縫製ラインＳ4 ，Ｓ4 で縫製することにより下部基布１１に立体的な形状が与えられる。そして上部基布１０および下部基布１１を上下に重ね合わせて縫製ラインＳ5 で縫製することにより、閉じた袋状のエアバッグ７が構成される。
【００１７】
このとき、展開したエアバッグ７の上部、中央部および下部の周長Ａ（＝２Ａ1 ＋Ａ2 ），Ｂ（＝２Ｂ1 ＋Ｂ2 ），Ｃ（＝２Ｃ1 ＋Ｃ2 ）の大小関係は、Ｂ＜Ａ＜Ｃを満たしているため、第１、第２実施例と同様に乗員拘束面７1 の鉛直断面を波形にし、最も短い周長Ｂを有する中央部にテザーの機能を発揮させてエアバッグ７の展開形状を安定させることができる。
【００１８】
次に、図１０および図１１に基づいて本発明の第４実施例を説明する。
【００１９】
第４実施例は第３実施例の変形であって、第３実施例は上部基布１０および下部基布１１を有する２ピース構造であるのに対し、第４実施例は上部基布１０および下部基布１１を先端部１０2 ，１１2 において一体に結合した１ピース構造になっている。本実施例によっても第３実施例と同様の作用効果を得ることができる。
【００２０】
以上、本発明の実施例を詳述したが、本発明はその要旨を逸脱しない範囲で種々の設計変更を行うことが可能である。
【００２１】
例えば、第１、第３、第４実施例では、展開したエアバッグ７の上部、中央部および下部の周長Ａ，Ｂ，ＣにＢ＜Ａ＜Ｃの関係を持たせているため、エアバッグ７の下部の突出量が上部の突出量よりも大きくなっているが（図４参照）、図１２に示すように周長Ａ，Ｂ，ＣにＢ＜Ｃ＜Ａの関係を持たせることにより、エアバッグ７の上部の突出量を下部の突出量よりも大きくしても良い。勿論、第２実施例のように、周長Ａ，Ｂ，ＣにＢ＜Ａ＝Ｃの関係を持たせることにより、エアバッグ７の上部および下部の突出量を等しくすることもできる。
【００２２】
【発明の効果】
以上のように請求項１に記載された発明によれば、助手席シートに着座した乗員に向けて車体後方に展開するエアバッグの展開方向先端に位置する乗員拘束面を通る高さの異なる複数の水平断面における周長が異なるようにエアバッグの基布を縫製したので、エアバッグの乗員拘束面は周長の短い中央部で車体前方に凹んで周長の長い上部および下部で車体後方に突出し、前記乗員拘束面を通る鉛直断面が波形になる。而して、エアバッグの展開時に周長の短い部分が最初に緊張してテザーが突っ張った状態と同じ状態になり、続いて周長の長い部分が膨張してエアバッグの展開が完了するため、テザーを設けることなくエアバッグの展開時における形態を安定させることができる。
【図面の簡単な説明】
【図１】 エアバッグ装置を備えた自動車の助手席の側面図
【図２】 展開したエアバッグの斜視図
【図３】 図２の３方向矢視図
【図４】 図２の４方向矢視図
【図５】 エアバッグの基布の展開図
【図６】 第２実施例に係る展開したエアバッグの斜視図
【図７】 エアバッグの基布の展開図
【図８】 第３実施例に係る展開したエアバッグの斜視図
【図９】 エアバッグの基布の展開図
【図１０】 第４実施例に係る展開したエアバッグの斜視図
【図１１】 エアバッグの基布の展開図
【図１２】 エアバッグの展開形状の他の例を示す図
【符号の説明】
１ 助手席用シート
２ インストルメントパネル
５ インフレー
７ エアバッグ
７1 乗員拘束面
８ 側部基布（基布）
９ 中央基布（基布）
１０ 上部基布（基布）
１１ 下部基布（基布）
Ａ 周長
Ｂ 周長
Ｃ 周長[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an airbag apparatus that restrains an occupant by deploying an airbag in a vehicle interior with high-pressure gas generated by an inflator at the time of a vehicle collision.
[0002]
[Prior art]
The airbag of such an airbag device is obtained by sewing a base fabric cut into a predetermined shape, and the cut shape of the base fabric is taken into consideration so as to be developed into a shape that can effectively restrain an occupant. However, it is difficult to deploy the airbag in a desired shape only with the tension of the base fabric, and the shape of the occupant restraint surface may oscillate with the pressure of the high-pressure gas supplied from the inflator and the shape may not be stable. Therefore, conventionally, the base end portion and the tip end portion of the inner surface of the airbag are connected by a tether made of a strip-shaped cloth piece, and the shape of the airbag is stabilized by the tension that the tether stretches when the airbag is deployed. .
[0003]
[Problems to be solved by the invention]
However, if a tether is provided in the airbag, not only the number of parts increases, but also the number of sewing steps increases, which causes a problem of increasing costs.
[0004]
The present invention has been made in view of the above circumstances, and an object thereof is to stabilize the deployed shape of an airbag without using a tether.
[0005]
[Means for Solving the Problems]
To achieve the above object, the invention described in claim 1, Ri greens and sewing the cut base fabric, located an air bag having no tether therein in front of the passenger seat of an automobile Insutoru An airbag device that is housed in a folded state inside a passenger panel and that is inflated by a high-pressure gas generated by an inflator and that is deployed toward the rear of the vehicle body toward an occupant seated in a passenger seat. by circumferential length at different heights plurality of horizontal section through the occupant restraint surface positioned deployment direction tip sewing the base fabric differently, a vertical section through the occupant restraint surface of the airbag, the upper The lower portion protrudes rearward of the vehicle body, and the central portion is formed in a wave shape recessed toward the front of the vehicle body.
[0006]
According to the above configuration, the perimeters of the plurality of horizontal cross sections having different heights passing through the passenger restraint surface located at the front end of the airbag in the deployment direction of the airbag deployed toward the rear of the vehicle body toward the passenger seated on the passenger seat are different. Since the airbag fabric is sewed , the occupant restraint surface of the airbag is recessed at the front of the vehicle body at the center with a short circumference and protrudes rearward at the upper and lower portions of the circumference and passes through the occupant restraint surface. Becomes a waveform. Thus, when the airbag is deployed, the portion with the short circumference is initially tensioned and becomes the same state as the tether is stretched, and then the portion with the long circumference is inflated to complete the deployment of the airbag. The form when the airbag is deployed can be stabilized without providing a tether.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples of the present invention shown in the accompanying drawings.
[0008]
1 to 5 show a first embodiment of the present invention. FIG. 1 is a side view of a passenger seat of an automobile equipped with an airbag device, FIG. 2 is a perspective view of a deployed airbag, and FIG. 2 is a three-direction arrow view, FIG. 4 is a four-direction arrow view of FIG. 2, and FIG. 5 is a development view of the base fabric of the airbag.
[0009]
As shown in FIG. 1, an airbag device 3 for restraining an occupant sitting on a seat 1 at the time of a car collision is provided inside an instrument panel 2 positioned in front of a passenger seat 1 of a car. The airbag device 3 is ignited by a signal from an acceleration sensor 4 that detects the impact of an automobile collision and generates high-pressure gas. The airbag device 3 is inflated by high-pressure gas generated by the inflator 5, and the upper surface of the instrument panel 2. And an airbag 7 that pushes open the lid 6 and deploys in the passenger compartment.
[0010]
As shown in FIGS. 2 to 5, the airbag 7 has a three-piece structure, and has two side base cloths 8 and 8 having a symmetrical shape, and a sewing line S on the side base cloths 8 and 8. 1 , S 1 and a single central base fabric 9 that is sewn together. Occupant restraint surface 71 that restrains the occupant is provided in the deployment direction leading end of the air bag 7, the upper and protruding bottom rear of the vehicle body, the center portion is formed in the recessed waveform front of the vehicle body. That is, the protruding amount of the occupant restraint surface 71 of the deployment direction of the air bag 7 is greater in the lower, smaller in the middle portion, the middle at the top. The small holes formed in the side base fabrics 8 and 8 are vent holes 7 2 and 7 2 for discharging excess gas.
[0011]
Central base fabric 9 is cut in the schematic band, the central portion facing the occupant restraint surface 71 is tapered at both end portions narrow constant width. Each side base fabric 8 is cut into substantially triangular, to face the occupant restraint surface 71 is in a waveform 1 two protrusions 8, and 8 3 and one recess 82 are continuous. When the airbag 7 is sewn on the sewing lines S 1 and S 1 , the circumferential lengths at three different heights of the airbag 7 are A, B, and C, respectively.
[0012]
As is apparent from FIG. 5, the peripheral length A of the upper portion of the airbag 7 is 2A 1 + A 2 , similarly, the peripheral length B of the central portion is 2B 1 + B 2 , and the peripheral length C of the lower portion is 2C 1 + C 2 . The widths A 2 , B 2 , and C 2 of the central base fabric 9 constituting a part of the circumferences A, B, and C are the same, but the widths A 1 , B 1 , and C 1 of the side base fabric 8 are B Since 1 <A 1 <C 1 , the circumferential lengths A, B, and C of the upper portion, the central portion, and the lower portion of the airbag 7 have a relationship of B <A <C. Thus, since the peripheral length B at the center height of the airbag 7 is smaller than the upper and lower peripheral lengths A and C, the center portion in the vertical direction having the shortest peripheral length B when the airbag 7 is deployed. The first state is the same as the state in which the tether is stretched, and then the upper portion having the circumferential length A and the lower portion having the circumferential length C are inflated to complete the deployment of the airbag 7. Thus, the form of the airbag 7 when deployed can be stabilized without providing a tether.
[0013]
Next, a second embodiment of the present invention will be described with reference to FIGS.
[0014]
The airbag 7 of the second embodiment is also sewed integrally with two side base fabrics 8 and 8 having a symmetrical shape and sewing lines S 1 and S 1 on the side base fabrics 8 and 8. a three-piece structure composed of sheets of the central base fabric 9 Prefecture, the shape of the occupant restraint surface 71 of the air bag 7, the central portion as in the first embodiment upper and lower protruded rearward of the vehicle body is a vehicle body It is formed in a wave shape recessed forward. A portion of the substantially triangular side base fabric 8 facing the occupant restraint surface 7 1 is cut into an arc shape, and a width A 1 constituting a part of the peripheral lengths A, B, and C of the upper portion, the central portion, and the lower portion thereof. , B 1 , C 1 are A 1 = B 1 = C 1 . On the other hand, the portion facing the occupant restraint surface 7 1 of the substantially band-shaped central base fabric 9 is formed with concave portions 9 1 , 9 1 on both side edges and has a narrow width. The lengths of A 2 , B 2 and C 2 constituting part of B and C are B 2 <A 2 = C 2 . As a result, the peripheral lengths A, B, and C of the upper portion, the central portion, and the lower portion of the airbag 7 have a relationship of B <A = C, and the central portion having the shortest peripheral length B when the airbag 7 is deployed is the first. The same function as the tether is exerted by tension, and the form when the airbag 7 is deployed can be stabilized.
[0015]
Next, a third embodiment of the present invention will be described with reference to FIGS.
[0016]
The airbag 7 of the third embodiment has a two-piece structure, and includes an upper base fabric 10 and a lower base fabric 11. The upper base fabric 10 is composed of a main body portion 10 1 and the tip end portion 10 2 which, in the upper base fabric 10 is a three-dimensional shape provided by sewing them in sewing lines S 3, S 3. Similarly, the lower base fabric 11 is composed of a main body portion 11 1 and a front end portion 11 2, and a three-dimensional shape is given to the lower base fabric 11 by sewing them along the sewing lines S 4 and S 4 . Then, the upper base fabric 10 and the lower base fabric 11 are stacked one above the other and sewed along the sewing line S 5 , thereby forming a closed bag-like airbag 7.
[0017]
At this time, the magnitude relationship between the circumferences A (= 2A 1 + A 2 ), B (= 2B 1 + B 2 ), C (= 2C 1 + C 2 ) of the upper, middle and lower parts of the deployed airbag 7 is B <because they meet the a <C, first, the second embodiment and the waveform of the vertical cross section of the occupant restraint surface 71 as well, the shortest in the center portion having a circumferential length B by exerting a function of the tether air The developed shape of the bag 7 can be stabilized.
[0018]
Next, a fourth embodiment of the present invention will be described with reference to FIGS.
[0019]
The fourth embodiment is a modification of the third embodiment. The third embodiment has a two-piece structure having an upper base fabric 10 and a lower base fabric 11, whereas the fourth embodiment has an upper base fabric 10 and It has a one-piece structure in which the lower base fabric 11 is integrally joined at the tip portions 10 2 and 11 2 . Also according to this embodiment, the same effect as that of the third embodiment can be obtained.
[0020]
As mentioned above, although the Example of this invention was explained in full detail, this invention can perform a various design change in the range which does not deviate from the summary.
[0021]
For example, in the first, third, and fourth embodiments, since the circumferential lengths A, B, and C of the upper portion, the central portion, and the lower portion of the deployed airbag 7 have a relationship of B <A <C, Although the protruding amount of the lower portion of the bag 7 is larger than the protruding amount of the upper portion (see FIG. 4), as shown in FIG. 12, the circumferential lengths A, B, and C have a relationship of B <C <A. Accordingly, the protruding amount of the upper portion of the airbag 7 may be larger than the protruding amount of the lower portion. Of course, as shown in the second embodiment, by making the circumferences A, B, and C have a relationship of B <A = C, the upper and lower protrusions of the airbag 7 can be made equal.
[0022]
【The invention's effect】
As described above, according to the first aspect of the present invention, a plurality of different heights passing through the occupant restraint surface located at the front end in the deployment direction of the airbag deployed rearward of the vehicle body toward the occupant seated on the passenger seat. Since the airbag base fabric is sewn so that the perimeter in the horizontal section of the air bag is different , the airbag's occupant restraint surface is recessed at the front of the vehicle at the center of the short perimeter, and at the rear and the rear of the vehicle at the upper and lower perimeter The vertical section that protrudes and passes through the occupant restraint surface has a waveform. Thus, when the airbag is deployed, the portion with the short circumference is initially tensioned and becomes the same state as the tether is stretched, and then the portion with the long circumference is inflated to complete the deployment of the airbag. The form when the airbag is deployed can be stabilized without providing a tether.
[Brief description of the drawings]
FIG. 1 is a side view of a passenger seat of an automobile equipped with an airbag device. FIG. 2 is a perspective view of a deployed airbag. FIG. 3 is a view taken in the direction of arrows 3 in FIG. FIG. 5 is a developed view of the airbag base fabric. FIG. 6 is a perspective view of the deployed airbag according to the second embodiment. FIG. 7 is a developed view of the airbag base fabric. FIG. 9 is a perspective view of a deployed airbag according to an example. FIG. 10 is a perspective view of a deployed airbag according to a fourth embodiment. FIG. 11 is a deployment of an airbag base fabric. FIG. 12 is a view showing another example of the airbag deployment shape.
1 Passenger Seat 2 Instrument Panel 5 Inflation 7 Airbag 7 1 Crew Restraint Surface 8 Side Base Fabric (Base Fabric)
9 Center base fabric (base fabric)
10 Upper base fabric (base fabric)
11 Lower base fabric (base fabric)
A Circumference B Circumference C Circumference

Claims (1)

裁断した基布（８，９，１０，１１）を縫製してなり、その内部にテザーを持たないエアバッグ（７）を自動車の助手席シート（１）の前方に位置するインストルメントパネル（２）の内部に折り畳み状態で収納し、インフレータ（５）が発生する高圧ガスで膨張するエアバッグ（７）を助手席シート（１）に着座した乗員に向けて車体後方に展開するエアバッグ装置であって、
展開したエアバッグ（７）の展開方向先端に位置する乗員拘束面（７ 1 ）を通る高さの異なる複数の水平断面における周長（Ａ，Ｂ，Ｃ）が異なるように前記基布（８，９，１０，１１）を縫製することにより、該エアバッグ（７）の前記乗員拘束面（７1 ）を通る鉛直断面を、上部および下部が車体後方に突出して中央部が車体前方に凹んだ波形に形成したことを特徴とするエアバッグ装置。 Ri name and sewing the cut was based on cloth (8, 9, 10, 11), the instrument panel to position the air bag (7) that does not have a tether to the inside in front of the car of the passenger seat (1) ( 2) An airbag device that is housed in a folded state and is deployed rearward of the vehicle body toward an occupant seated in the passenger seat (1) with the airbag (7) inflated by the high-pressure gas generated by the inflator (5) Because
The base fabric (8 ) has different circumferential lengths (A, B, C) in a plurality of horizontal cross sections having different heights passing through the occupant restraint surface (7 1 ) located at the deployment direction front end of the deployed airbag (7). by sewing the 9, 10, 11), a vertical section through the occupant restraint surface of the airbag (7) (7 1), the central portion upper and lower protrudes rearward of the vehicle body is recessed forward of the vehicle body An airbag device characterized by being formed into a corrugated shape.
JP29074098A 1998-10-13 1998-10-13 Airbag device Expired - Lifetime JP3993324B2 (en)

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