JP2009154778A - Air bag device for front passenger seat - Google Patents

Air bag device for front passenger seat Download PDF

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JP2009154778A
JP2009154778A JP2007336966A JP2007336966A JP2009154778A JP 2009154778 A JP2009154778 A JP 2009154778A JP 2007336966 A JP2007336966 A JP 2007336966A JP 2007336966 A JP2007336966 A JP 2007336966A JP 2009154778 A JP2009154778 A JP 2009154778A
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airbag
folded
passenger seat
gas
instrument panel
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JP5090153B2 (en
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Ryuichiro Tsujimoto
龍一郎 辻本
Yoshitaka Furukawa
吉崇 古川
Tomoji Yamashita
智司 山下
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Ashimori Industry Co Ltd
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Ashimori Industry Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To quickly spread an air bag for a front passenger seat toward an occupant side regardless of the existence and degree of inclination of a windshield. <P>SOLUTION: An air bag device for the front passenger seat is provided with the air bag 30 having a gas introduction port 32h; an inflator 22 capable of feeding a gas into the air bag 30; and a flow-regulation body 40 provided in the air bag 30. The flow-regulation body 40 is formed to a cylindrical shape with a bottom having opened one end side, and a communication hole 42 connected to the gas introduction port 32h is formed on one side. The flow-regulation body 40 is assembled into the air bag 30 in the form that the opening 40h is made opposed to an inner surface of a front part in the air bag 30 on the midway of inflation/spreading of the air bag 30. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は、車両乗員を保護するためのエアバッグ装置に関する。   The present invention relates to an airbag device for protecting a vehicle occupant.

助手席用のエアバッグ装置として、特許文献１に開示のものがある。特許文献１は、エアバッグ内に整流布を備えたエアバッグ装置を開示している。整流布は、車両の左右方向の両側を塞ぐと共に、車両の前後方向の両側を開口させ、さらに前方側の開口面積を後方側の開口面積より大きくした構成とされている。   As an airbag device for a passenger seat, there is one disclosed in Patent Document 1. Patent document 1 is disclosing the airbag apparatus provided with the baffle cloth in the airbag. The rectifying cloth is configured to block both the left and right sides of the vehicle, open both sides of the vehicle in the front-rear direction, and further increase the opening area on the front side to the opening area on the rear side.

特開平１１−２７８１９２号公報JP 11-278192 A

ところで、通常、インストルメントパネルの上面に設けられる助手席用のエアバッグ装置では、インストルメントパネルの上面から乗員側に向けて大きく伸び出るように膨張展開する必要がある。   By the way, normally, an airbag device for a passenger seat provided on the upper surface of an instrument panel needs to be inflated and deployed so as to extend greatly from the upper surface of the instrument panel toward the passenger side.

上記特許文献１に開示のエアバッグ装置では、ウインドシールドに沿って車両の後方側（乗員側）へ膨張展開するように設置している。   In the airbag apparatus disclosed in Patent Document 1, the airbag apparatus is installed so as to be inflated and deployed toward the rear side (occupant side) of the vehicle along the windshield.

しかしながら、上記エアバッグ装置ではウインドシールドが鉛直方向に対してある程度の角度で傾斜していることを前提としている。鉛直方向に対するウインドシールドの傾斜角度が緩い場合、或は、ウインドシールドが鉛直方向に近い角度で配設されている場合には、別途の工夫が必要となる。   However, the airbag apparatus is premised on that the windshield is inclined at a certain angle with respect to the vertical direction. When the inclination angle of the windshield with respect to the vertical direction is loose, or when the windshield is disposed at an angle close to the vertical direction, a separate device is required.

そこで、本発明は、ウインドシールドの傾斜の有無、程度に拘らず、助手席用のエアバッグを乗員側に向けて素早く展開できるようにすることを目的とする。   Accordingly, an object of the present invention is to enable a passenger seat airbag to be quickly deployed toward a passenger regardless of whether or not the windshield is inclined.

上記課題を解決するため、第１の態様に係る助手席用エアバッグ装置は、インストルメントパネルに配設される助手席用エアバッグ装置であって、ガス導入口を有する袋状に形成され、通常状態では、インストルメントパネル内で折畳み収納可能に構成されると共に、膨張時にはインストルメントパネル外に展開可能なエアバッグと、前記ガス導入口を通じて前記エアバッグ内にガスを供給可能なインフレータと、一端側が開口する有底筒状に形成され、側壁部に前記ガス導入口に連結された連通孔が形成された整流体と、を備え、前記整流体は、前記エアバッグの膨張展開途中で、その開口を前記エアバッグの前部内面側に対向させる態様で、前記エアバッグ内に組込まれたものである。   In order to solve the above-described problem, a passenger seat airbag device according to a first aspect is a passenger seat airbag device disposed in an instrument panel, and is formed in a bag shape having a gas inlet, In the normal state, it is configured so that it can be folded and stored in the instrument panel, and when inflated, an airbag that can be deployed outside the instrument panel, and an inflator that can supply gas into the airbag through the gas inlet, A rectifying body that is formed in a bottomed cylindrical shape that opens at one end side and that has a communication hole that is connected to the gas introduction port on the side wall, and the rectifying body is in the middle of inflation and deployment of the airbag, The opening is incorporated in the airbag in such a manner that the opening faces the front inner surface side of the airbag.

第２の態様は、第１の態様に係る助手席用エアバッグ装置であって、前記インフレータは、略円盤状に形成されその外周囲にガス噴出口が形成されたガス噴出部を有し、前記ガス噴出部が前記連通孔を通って前記整流体内に配設され、前記整流体は、基布を前記ガス噴出口に対向する位置を除く位置で縫合することで形成されたものである。   The second aspect is the passenger seat airbag apparatus according to the first aspect, wherein the inflator has a gas ejection part formed in a substantially disk shape and having a gas ejection port formed on the outer periphery thereof. The gas ejection part is disposed in the flow straightening body through the communication hole, and the flow straightening body is formed by stitching a base fabric at a position excluding a position facing the gas discharge port.

第３の態様は、第２の態様に係る助手席用エアバッグ装置であって、前記整流体は、側壁部に前記連通孔を有すると共にその連通孔に対向する側壁部に縫合部分を有する略筒状布部と、前記略筒状布部の一端部であって前記連通孔と同じ側壁部から延出する延出布部とを有し、前記延出布部が前記略筒状布部に対して前記連通孔とは反対側の側壁部で重ね合せて縫合されたものである。   A third aspect is a passenger seat airbag apparatus according to the second aspect, wherein the rectifier has the communication hole in the side wall part and has a stitched portion in the side wall part facing the communication hole. A tubular cloth part; and an extended cloth part that is one end of the substantially tubular cloth part and extends from the same side wall part as the communication hole, and the extended cloth part is the substantially tubular cloth part. On the other hand, they are overlapped and sewn on the side wall portion opposite to the communication hole.

第４の態様は、第１〜第３のいずれかの態様に係る助手席用エアバッグ装置であって、前記エアバッグは、前記ガス導入口に対向する部分を前記ガス導入口側に接近させるように平面状に折畳まれると共に前後方向に亘って左右略均等幅となるように左右両側部が折畳まれた状態から、前記ガス導入口よりも前方部分が蛇腹状に折畳まれた前方折畳み部分と、前記ガス導入口よりも後方部分が蛇腹状に折畳まれた後方折畳み部分とを有し、前記前方折畳み部分が前記後方折畳み部分よりも前記ガス導入口の近くに位置するものである。   A fourth aspect is a passenger seat airbag apparatus according to any one of the first to third aspects, wherein the airbag causes a portion facing the gas inlet to approach the gas inlet. From the state where the left and right sides are folded so as to have a substantially equal width in the front-rear direction, the front part is folded in a bellows shape from the gas inlet. It has a front folding part and a rear folding part whose rear part is folded like a bellows from the gas introduction port, and the front folding part is located closer to the gas introduction port than the rear folding part It is.

第５の態様は、第１〜第４のいずれかの態様に係る助手席用エアバッグ装置であって、前記エアバッグの折畳み形態を覆うと共に、前記エアバッグの膨張展開により破断してインストルメントパネルの開口周縁部の少なくとも一部と前記エアバッグの間に介在可能な保護部材をさらに備えたものである。   A fifth aspect is an airbag device for a passenger seat according to any one of the first to fourth aspects, covering a folded form of the airbag, and being broken by the inflation and deployment of the airbag. It further includes a protective member that can be interposed between at least a part of the opening peripheral edge of the panel and the airbag.

第１の態様に係る助手席用エアバッグ装置によると、インフレータから供給されるガスは、整流体を通ってエアバッグ内に供給される。そして、整流体は、前記エアバッグの膨張展開時には、その開口を前記エアバッグの前部内面側に対向させる。この際、整流体の開口から供給されるガスは、まず、エアバッグの前部部分を膨張展開させる。そして、エアバッグの前部部分がほぼ完全に膨張した後、整流体の開口から供給されるガスは、エアバッグの前後方向中間部さらには後部部分に供給され、エアバッグ全体が膨張展開する。このため、エアバッグの前部部分のほぼ完全な膨張形態によって、エアバッグが乗員側に向けて展開するようにコントロールすることができる。従って、ウインドシールドの傾斜の有無、程度に拘らず、助手席用のエアバッグを乗員側に向けて素早く展開できるようにすることができる。   According to the passenger seat airbag apparatus according to the first aspect, the gas supplied from the inflator is supplied into the airbag through the rectifier. And a rectifier makes the opening oppose the front part inner surface side of the said airbag at the time of inflation deployment of the said airbag. At this time, the gas supplied from the opening of the rectifier first inflates and deploys the front portion of the airbag. Then, after the front portion of the airbag is almost completely inflated, the gas supplied from the opening of the rectifier is supplied to the intermediate portion in the front-rear direction and further to the rear portion of the airbag, and the entire airbag is inflated and deployed. For this reason, it is possible to control the airbag to be deployed toward the occupant side by the substantially complete inflation form of the front portion of the airbag. Therefore, regardless of whether the windshield is inclined or not, the airbag for the passenger seat can be quickly deployed toward the passenger.

第２の態様によると、基布の縫合によって形成される整流体に関して、強度が比較的弱い縫合部分にガスが直接あたらないので、整流体の破損を防止できると共に、縫合部分の強度を極端に強くする必要がないので、縫合作業を効率よく行える。   According to the second aspect, with respect to the rectifying body formed by stitching the base fabric, gas is not directly applied to the stitched portion having a relatively low strength, so that the rectifying body can be prevented from being damaged and the strength of the stitched portion is extremely reduced. Since it is not necessary to strengthen, the suturing operation can be performed efficiently.

第３の態様によると、略筒状布部の縫合部分及び前記略筒状布部に対する延出布部の縫合部分は、ガス噴出口に対向する位置を避けた位置に配設される。このため、強度が比較的弱い縫合部分にガスが直接あたらないので、整流体の破損を防止できると共に、縫合部分の強度を極端に強くする必要がないので、縫合作業を効率よく行える。   According to the 3rd aspect, the stitching part of the substantially cylindrical cloth part and the stitching part of the extension cloth part with respect to the said substantially cylindrical cloth part are arrange | positioned in the position which avoided the position facing a gas jet nozzle. For this reason, since the gas does not directly hit the stitching portion having a relatively low strength, it is possible to prevent the rectifier from being damaged, and it is not necessary to extremely increase the strength of the stitching portion, so that the stitching operation can be performed efficiently.

第４の態様によると、前記前方折畳み部分が前記後方折畳み部分よりも前記ガス導入口の近くに位置するため、整流体を経由してガスが導入されると、まず、前方折畳み部分が蛇腹折りを解消させながら後方折畳み部分を後方に押退けつつ膨張展開する。そして、後方折畳み部分の蛇腹状を解消させつつ左右方向へも広がりながら膨張展開する。これにより、エアバッグを円滑かつ素早く展開させることができる。   According to the fourth aspect, since the front folding part is located closer to the gas introduction port than the rear folding part, when gas is introduced through the rectifier, first, the front folding part is bellows folded. Inflating and unfolding while pushing the rear folding part backward while eliminating the above. And it expand | deploys while expanding in the left-right direction, eliminating the bellows shape of a back folding part. Thereby, the airbag can be deployed smoothly and quickly.

第５の態様によると、保護部材は、エアバッグの折畳み状態を維持することができる。また、前記エアバッグの膨張展開により破断してインストルメントパネルの開口周縁部の少なくとも一部とエアバッグの間に介在するため、インストルメントパネルの開口周縁部とエアバッグとの直接接触が回避され、エアバッグ及びインストルメントパネルの開口周縁部の破損を防止できる。   According to the fifth aspect, the protective member can maintain the folded state of the airbag. Further, since the airbag is broken and inflated and deployed and is interposed between at least a part of the opening peripheral portion of the instrument panel and the airbag, direct contact between the opening peripheral portion of the instrument panel and the airbag is avoided. Further, it is possible to prevent breakage of the opening peripheral portion of the airbag and the instrument panel.

以下、実施形態に係る助手席用エアバッグ装置について説明する。図１は膨張展開した状態でのエアバッグ３０及び整流体４０を示す斜視図であり、図２はインストルメントパネル１２に組込まれて収納されたエアバッグ装置２０を示す一部断面側面図であり、図３はインストルメントパネル１２に組込まれたエアバッグ装置２０が膨張展開した状態を示す一部断面側面図である。なお、以下の説明において、説明の便宜上、前後方向、上下方向及び左右方向とは、本エアバッグ装置２０が車両に組込まれて乗員が前方を向いた状態での方向を基準とする。   Hereinafter, the airbag device for a passenger seat concerning an embodiment is explained. FIG. 1 is a perspective view showing an airbag 30 and a rectifying body 40 in an inflated and deployed state, and FIG. 2 is a partial cross-sectional side view showing an airbag device 20 incorporated and housed in an instrument panel 12. FIG. 3 is a partial cross-sectional side view showing a state where the airbag device 20 incorporated in the instrument panel 12 is inflated and deployed. In the following description, for convenience of description, the front-rear direction, the up-down direction, and the left-right direction are based on directions in a state where the airbag device 20 is incorporated in a vehicle and an occupant faces forward.

このエアバッグ装置２０は、車両のウインドシールドＷ内側であって助手席前方にあるインストルメントパネル１２上面に組込むように配設されている。本エアバッグ装置２０は、車両の衝突時等に助手席乗員前方に膨張展開して、助手席乗員を受止めて衝撃を吸収する装置である。   The airbag device 20 is disposed on the upper surface of the instrument panel 12 inside the windshield W of the vehicle and in front of the passenger seat. The airbag device 20 is a device that inflates and deploys in front of a passenger in a passenger seat at the time of a vehicle collision, etc., and receives the passenger seat to absorb an impact.

このエアバッグ装置２０は、エアバッグ３０と、インフレータ２２と、整流体４０と、保護部材５０とを備えている。   The airbag device 20 includes an airbag 30, an inflator 22, a rectifying body 40, and a protection member 50.

エアバッグ３０は、布等でガス導入口３２ｈを有する袋状に形成されており、通常状態では、インストルメントパネル１２内で折畳んで収納されている。また、このエアバッグ３０は、膨張展開時には、インストルメントパネル１２外に飛出して助手席乗員側に向けて膨張展開するように構成されている。   The airbag 30 is formed in a bag shape having a gas inlet 32h with cloth or the like, and is folded and stored in the instrument panel 12 in a normal state. Further, the airbag 30 is configured to jump out of the instrument panel 12 and inflate and deploy toward the passenger seat occupant side when inflated and deployed.

ここで、インストルメントパネル１２の上面部分であってエアバッグ３０の配設部分に対向する内面には、当該対向部分を複数に***させるティアラインが形成されている。そして、エアバッグ３０の膨張展開力を受けて当該インストルメントパネル１２の上面部分が前記ティアラインで***して、エアバッグ３０を外方に向けて膨張展開させるための開口１２ｈが形成されるようになっている。   Here, on the inner surface that is the upper surface portion of the instrument panel 12 and faces the portion where the airbag 30 is disposed, a tear line that splits the facing portion into a plurality of portions is formed. And the upper surface part of the said instrument panel 12 receives the expansion | deployment force of the airbag 30, the upper surface part is divided | segmented by the said tear line, and the opening 12h for expanding and deploying the airbag 30 outward is formed. It has become.

ここでは、インストルメントパネル１２の上面部分であってエアバッグ３０の配設部分に対向する内面には略Ｈ字状のティアラインが形成されており、当該上面部分が車両前後方向において２つのドア片１４（ここでは略方形状のドア片１４）に区切られている。前側のドア片１４は、車両前方側でヒンジ部１４ａを介してインストルメントパネル１２のうち開口１２ｈ前縁部に連結されており、後側のドア片１４はヒンジ部１４ａを介してインストルメントパネル１２のうち開口１２ｈ後縁部に連結されている。そして、エアバッグ３０の膨張展開力を受けて、インストルメントパネル１２の上面部分が前記ティアラインに沿って***し、２つのドア片１４がヒンジ部１４ａ周りで車両前後方向に割り開かれて、開口１２ｈ（ここでは略方形開口１２ｈ）が形成されるようになっている。   Here, a substantially H-shaped tear line is formed on the inner surface of the instrument panel 12 that faces the portion where the airbag 30 is disposed, and the upper surface portion includes two doors in the vehicle front-rear direction. It is divided into pieces 14 (here, substantially rectangular door pieces 14). The front door piece 14 is connected to the front edge of the opening 12h in the instrument panel 12 via the hinge part 14a on the front side of the vehicle, and the rear door piece 14 is connected to the instrument panel via the hinge part 14a. 12 is connected to the rear edge of the opening 12h. Then, in response to the inflating and deploying force of the airbag 30, the upper surface portion of the instrument panel 12 is split along the tear line, and the two door pieces 14 are split and opened in the vehicle front-rear direction around the hinge portion 14a. An opening 12h (here, substantially rectangular opening 12h) is formed.

インフレータ２２は、点火装置及びガス発生剤等を有しており、車両の衝撃検知部等からの点火命令信号等を受けて前記点火装置を発火させ、この発火によりガス発生剤を燃焼させる。これにより発生したガスが、上記ガス導入口３２ｈを通じてエアバッグ３０内に供給される（図２及び図３参照）。より具体的には、インフレータ２２は円筒状の外形状を有しており、その長手方向中間部の外周囲につば部２６が形成されている。また、インフレータ２２のうちつば部２６よりも上方の部分は、略円盤状に形成されその外周囲に複数のガス噴出口２４ｈが形成されたガス噴出部２４に形成されている。このインフレータ２２は、インストルメントパネル１２内側に取付けられたブラケット２８の底壁開口部２８ｈ内に配設した状態で、そのつば部２６を当該底壁開口部２８ｈの周縁部に重ね合せた状態でネジ等を用いて取付固定される。つば部２６と底壁開口部２８ｈの周縁部との重ね合せ部分には、エアバッグ３０のガス導入口３２ｈの周縁部及び整流体４０の連通孔４２（後述する）の周縁部、保護部材５０の開口５０ｈの周縁部（後述する）も重ね合されている。そして、インフレータ２２をブラケット２８の底壁開口部２８ｈ周縁部に取付ける際、エアバッグ３０のガス導入口３２ｈの周縁部及び整流体４０の連通孔４２の周縁部、保護部材５０の開口５０ｈの周縁部も当該取付箇所に一括して固定されている。この取付状態で、ガス噴出部２４は、ガス導入口３２ｈ及び連通孔４２を通ってエアバッグ３０内で整流体４０内に配設されている。これにより、インフレータ２２は、エアバッグ３０及び整流体４０内にガスを供給可能な態様で、インストルメントパネル１２に配設固定されている。   The inflator 22 includes an ignition device, a gas generating agent, and the like. The inflator 22 receives an ignition command signal from an impact detection unit or the like of the vehicle and ignites the ignition device, and the gas generating agent is combusted by the ignition. The generated gas is supplied into the airbag 30 through the gas inlet 32h (see FIGS. 2 and 3). More specifically, the inflator 22 has a cylindrical outer shape, and a collar portion 26 is formed on the outer periphery of the middle portion in the longitudinal direction. Further, a portion of the inflator 22 above the flange portion 26 is formed in a gas ejection portion 24 that is formed in a substantially disk shape and has a plurality of gas ejection ports 24h formed on the outer periphery thereof. The inflator 22 is disposed in the bottom wall opening 28h of the bracket 28 attached to the inside of the instrument panel 12, and the flange 26 is overlapped with the peripheral edge of the bottom wall opening 28h. It is attached and fixed using screws or the like. The overlapping portion of the flange portion 26 and the peripheral edge portion of the bottom wall opening 28 h includes a peripheral portion of the gas inlet 32 h of the airbag 30, a peripheral portion of a communication hole 42 (described later) of the rectifier 40, and a protective member 50. The peripheral portion (described later) of the opening 50h is also overlapped. When the inflator 22 is attached to the peripheral edge of the bottom wall opening 28 h of the bracket 28, the peripheral edge of the gas inlet 32 h of the airbag 30, the peripheral edge of the communication hole 42 of the rectifier 40, and the peripheral edge of the opening 50 h of the protection member 50. The part is also fixed to the mounting location in a lump. In this attached state, the gas ejection portion 24 is disposed in the rectifier 40 in the airbag 30 through the gas inlet 32h and the communication hole 42. Thereby, the inflator 22 is disposed and fixed to the instrument panel 12 in such a manner that gas can be supplied into the airbag 30 and the rectifying body 40.

整流体４０は、布等で一端側が開口する有底筒状に形成されており、側壁部に前記ガス導入口３２ｈに連結された連通孔４２が形成されている。この整流体４０は、その一端側開口４０ｈを膨張展開時におけるエアバッグ３０の前部内面側に対向させる姿勢で、エアバッグ３０内に組込まれている。そして、上記インフレータ２２より供給されるガスは、本整流体４０内からその一端側開口４０ｈを通ってエアバッグ３０内の前部内面側に吹付けられて、その後エアバッグ３０内全体に供給されるようになっている。なお、整流体４０が有底筒状であるとは、前記開口４０ｈに対して反対側の端部（車両組込状態で前側の端部）からガスを完全に或はほとんど噴出させない程度に底部が閉塞された筒状であることを意味しており、側部等から多少のガス漏れが生じてもよい。   The rectifying body 40 is formed in a bottomed cylindrical shape having one end opened with a cloth or the like, and a communication hole 42 connected to the gas introduction port 32h is formed in a side wall portion. The rectifying body 40 is incorporated in the airbag 30 in such a posture that the one end side opening 40h faces the front inner surface side of the airbag 30 at the time of inflation and deployment. The gas supplied from the inflator 22 is sprayed from the current rectifying body 40 through the one end side opening 40h to the front inner surface side in the airbag 30, and then supplied to the entire airbag 30. It has become so. Note that the rectifying body 40 has a bottomed cylindrical shape means that the gas is completely or almost not ejected from the end opposite to the opening 40h (the front end in a vehicle-mounted state). Means a closed cylinder, and some gas leakage may occur from the side or the like.

保護部材５０は、通常状態では、折畳まれたエアバッグ３０を覆うように取付けられており、エアバッグ３０が膨張展開すると部分的に破断する。そして、破断により広がった保護部材５０が、インストルメントパネル１２の開口１２ｈ周縁部の少なくとも一部と膨張展開するエアバッグ３０との間に介在し、エアバッグ３０とインストルメントパネル１２の開口１２ｈ周縁部との直接接触を回避するようになっている。   The protection member 50 is attached so as to cover the folded airbag 30 in a normal state, and is partially broken when the airbag 30 is inflated and deployed. Then, the protective member 50 spread by breakage is interposed between at least a part of the peripheral edge of the opening 12h of the instrument panel 12 and the airbag 30 that is inflated and deployed, and the peripheral edge of the opening 30h of the airbag 30 and the instrument panel 12 Direct contact with the part is avoided.

エアバッグ３０、整流体４０及び保護部材５０についてより詳細に説明する。   The airbag 30, the rectifier 40, and the protection member 50 will be described in more detail.

エアバッグ３０は、細長い袋状に膨張展開可能であり、その前端側部分は、その後端側部分よりも広く（ここでは上下方向に広く）膨張展開可能に構成されている。また、エアバッグ３０の前端側部分の下面、即ち、インストルメントパネル１２の上面部分近傍に配設される部分に、ガス導入口３２ｈが形成されている。そして、本エアバッグ３０は、インストルメントパネル１２の上面部分に組込まれた状態で、当該上面部分から後方の助手席乗員側に向けて延出するように膨張展開可能に構成されている。この際、エアバッグ３０のうち広く膨張展開した後端側部分は、インストルメントパネル１２の乗員側で膨張展開して乗員を受止めるようになっている。また、エアバッグ３０の後端部の側面には、膨張展開後の排気を行うためのベントホール３３ｈが形成されている。   The airbag 30 can be inflated and deployed in the shape of an elongated bag, and the front end side portion thereof is configured to be inflated and deployed wider than the rear end side portion (here, wider in the vertical direction). Further, a gas introduction port 32 h is formed in a lower surface of the front end side portion of the airbag 30, that is, a portion disposed near the upper surface portion of the instrument panel 12. The airbag 30 is configured to be inflatable and deployable so as to extend from the upper surface portion toward the rear passenger seat occupant side in a state of being incorporated in the upper surface portion of the instrument panel 12. At this time, the rear end portion of the airbag 30 that is widely inflated and deployed is inflated and deployed on the occupant side of the instrument panel 12 to receive the occupant. In addition, a vent hole 33h for performing exhaust after inflation and deployment is formed on the side surface of the rear end portion of the airbag 30.

このようなエアバッグ３０は、例えば、その両側面を構成する一対の側部パネル部３４と、一対の側部パネル部３４の周縁部間に配設される中央パネル部３５とを有している。これら側部パネル部３４や中央パネル部３５は、布等で形成されている。そして、上記一対の側部パネル部３４の周縁部に中央パネル部３５の両側縁部を縫い合せると共に、中央パネル部３５の端部を縫い合せて環状に形成することで袋状に形成し、これを、ガス導入口３２ｈ等を利用して表裏反転させることで、上記のように袋状のエアバッグ３０が形成される。   Such an airbag 30 has, for example, a pair of side panel portions 34 constituting both side surfaces thereof, and a center panel portion 35 disposed between the peripheral edges of the pair of side panel portions 34. Yes. The side panel part 34 and the central panel part 35 are formed of cloth or the like. And while sewing both the side edge parts of the center panel part 35 to the peripheral part of the pair of side panel parts 34, the end part of the center panel part 35 is stitched and formed into an annular shape, The bag-like airbag 30 is formed as described above by reversing this using the gas inlet 32h or the like.

また、上記のような整流体４０は、例えば、布を適宜折畳んで縫合することで形成される。このように整流体４０を形成した場合、その縫目部分では他の部分よりも相対的に弱くなってしまう。そこで、そのような縫目部分にガス噴出口２４ｈからの大きなガス圧が直接的に作用しないように、整流体４０を構成する基布を、ガス噴出口２４ｈに対向する位置を除く位置で縫合するとよい。そのような態様での基布の折畳み及び縫合形態としては種々の態様を考えることができる。一例として、下記のようにして折畳んで縫合して整流体４０を形成することができる。   Moreover, the above rectifiers 40 are formed, for example, by appropriately folding and sewing a cloth. When the rectifying body 40 is formed in this way, the seam portion is relatively weaker than the other portions. Therefore, the base fabric constituting the rectifying body 40 is sewn at a position other than the position facing the gas outlet 24h so that a large gas pressure from the gas outlet 24h does not directly act on such a stitch portion. Good. Various modes can be considered as the folding and stitching forms of the base fabric in such a mode. As an example, the rectifier 40 can be formed by folding and sewing as follows.

図４〜図６は整流体４０の折畳み及び縫合形態を示す図である。   4-6 is a figure which shows the folding and the stitching | suture form of the rectification | straightening body 40. FIG.

まず、図４（ａ）及び図４（ｂ）に示すように、略Ｔ字状の基布４６を準備する。この基布４６のうち略Ｔ字状の両側方に延出する左右両翼部の略中央部に連通孔４２が形成されている。なお、ここでは、基布４６は、略同一形状の布を複数枚（ここでは３枚）重ね合せた構成とされている。   First, as shown to Fig.4 (a) and FIG.4 (b), the substantially T-shaped base fabric 46 is prepared. A communication hole 42 is formed in a substantially central portion of the left and right wings extending to both sides of the substantially T-shaped portion of the base fabric 46. Here, the base cloth 46 has a configuration in which a plurality of (here, three) cloths having substantially the same shape are overlapped.

そして、図５（ａ）及び図５（ｂ）に示すように、基布４６のうち略Ｔ字状の左右両翼部の側縁部を重ね合せて、その側縁部同士を縫合する。これにより、一側部に連通孔４２を有すると共に、その連通孔４２に対向する側に縫合部４７ａを有する略筒状布部４７が形成される。   And as shown to Fig.5 (a) and FIG.5 (b), the side edge part of the substantially T-shaped right-and-left both wing | blade part is overlapped among the base fabrics 46, and the side edge parts are stitched | sutured. Thereby, while having the communicating hole 42 in one side part, the substantially cylindrical cloth part 47 which has the stitching | suture part 47a in the side facing the communicating hole 42 is formed.

そして、図６（ａ）及び図６（ｂ）に示すように、連通孔４２と縫合部４７ａとが重なり合う位置関係に配設されるように、上記略筒状布部４７を折畳む。   Then, as shown in FIGS. 6A and 6B, the substantially cylindrical cloth portion 47 is folded so that the communication hole 42 and the stitching portion 47a are disposed in an overlapping positional relationship.

次に、略筒状布部４７の一端部であって連通孔４２と同じ側から延出する延出布部４８（基布４６のうち略Ｔ字状の下端部となる部分）を、略筒状布部４７に対して連通孔４２とは反対側の外側部に重ね合せる。そして、延出布部４８の端縁部を略筒状布部４７の他端部に縫合して、略筒状布部の他端部に縫合部４７ａを形成する。これにより、整流体４０が形成される。   Next, an extended fabric portion 48 (a portion that becomes a substantially T-shaped lower end portion of the base fabric 46) that is one end portion of the substantially cylindrical fabric portion 47 and extends from the same side as the communication hole 42 is approximately It overlaps with the outer side part on the opposite side to the communicating hole 42 with respect to the cylindrical cloth part 47. FIG. And the edge part of the extended cloth part 48 is stitched | sutured to the other end part of the substantially cylindrical cloth part 47, and the stitched part 47a is formed in the other end part of a substantially cylindrical cloth part. Thereby, the rectifier 40 is formed.

そして、上記ガス噴出部２４を、連通孔４２を通じて整流体４０内に配設すると、そのガス噴出部２４のガス噴出口２４ｈ周りには、略筒状布部４７のうち連通孔４２と縫合部４７ａとの間の部分及び略筒状布部４７と延出布部４８との折畳み部分（整流体４０の底部となる部分）が配設される。上記縫合部４６ａ，４７ａは、ガス噴出口２４ｈに対向する位置を除く位置、ここでは、ガス噴出部２４の端部に対向する位置に配設されることになる（図１参照）。   When the gas ejection part 24 is disposed in the rectifying body 40 through the communication hole 42, the communication hole 42 and the stitching part of the substantially tubular cloth part 47 are disposed around the gas ejection port 24 h of the gas ejection part 24. The part between 47a and the folding part (part used as the bottom part of the rectifier 40) of the substantially cylindrical cloth part 47 and the extension cloth part 48 are arrange | positioned. The stitched portions 46a and 47a are disposed at positions excluding the position facing the gas ejection port 24h, here, at the position facing the end of the gas ejection portion 24 (see FIG. 1).

このように構成された整流体４０は、エアバッグ３０内でその一端側開口４０ｈを当該エアバッグ３０の前部に向けた姿勢で、連通孔４２の周縁部をエアバッグ３０のガス導入口３２ｈ周縁部に重ね合せて縫合することで、当該エアバッグ３０内に配設される。   The rectifying body 40 configured in this way is in a posture in which the one end side opening 40h faces the front portion of the airbag 30 in the airbag 30, and the peripheral portion of the communication hole 42 is the gas inlet 32h of the airbag 30. The airbag 30 is placed in the airbag 30 by being stitched on the periphery.

そして、このように内部に整流体４０が配設されたエアバッグ３０は、例えば、次のようにして折畳まれる。図８〜図１６はエアバッグ３０の折畳み例を示す図である。   Then, the airbag 30 in which the rectifying body 40 is arranged in this way is folded, for example, as follows. 8-16 is a figure which shows the example of folding of the airbag 30. FIG.

まず、図８及び図９に示すように、エアバッグ３０のうちガス導入口３２ｈに対向する部分（展開形態で上方部分）を、ガス導入口３２ｈ側部分に接近させるように平面状に折畳む。そして、平面状に折畳んだエアバッグ３０を、前後方向に亘って略均等幅となるように左右両側部を折畳む（図８の２点鎖線参照）。   First, as shown in FIGS. 8 and 9, the portion of the airbag 30 that faces the gas inlet 32h (the upper portion in the deployed configuration) is folded into a plane so as to approach the gas inlet 32h side portion. . Then, the left and right side portions of the airbag 30 folded in a planar shape are folded so as to have a substantially uniform width in the front-rear direction (see a two-dot chain line in FIG. 8).

ここでの折畳み形態は、蛇腹状に折畳んでもロール状に折畳んでもよい。ここでは、図１０〜図１２に示すようにして蛇腹状に折畳んでいる。すなわち、図１０に示すように、平面状に折畳んだエアバッグ３０の一側部を内向きに折畳むと共に（図１０の矢符Ａ１参照）、折畳んだ部分の一側部部分を外方に折返す（図１０の矢符Ａ２参照）。これにより、平面状に折畳んだエアバッグ３０の一側部が一直線状に揃えられる。   The folding form here may be folded in a bellows shape or in a roll shape. Here, it is folded in a bellows shape as shown in FIGS. That is, as shown in FIG. 10, one side portion of the airbag 30 folded in a plane is folded inward (see arrow A1 in FIG. 10), and one side portion of the folded portion is removed. (See arrow A2 in FIG. 10). As a result, one side portion of the airbag 30 folded in a plane is aligned in a straight line.

そして、図１２に示すように、平面状に折畳んだエアバッグ３０の他側部を上記と同様にして蛇腹状に折畳む。   Then, as shown in FIG. 12, the other side portion of the airbag 30 folded in a flat shape is folded in a bellows shape in the same manner as described above.

これにより、平面状に折畳まれたエアバッグ３０が、前後方向に亘って略均等幅になる。   Thereby, the airbag 30 folded into a planar shape has a substantially uniform width in the front-rear direction.

次に、図１３〜図１６に示すように、エアバッグ３０を前後方向でも折畳む。すなわち、図１３に示すように、エアバッグ３０のうちガス導入口３２ｈよりも前方部分を複数回（例えば２回）蛇腹状に折畳んで前方折畳み部分３６ａを形成し、この前方折畳み部分３６ａをガス導入口３２ｈ上に配設する。   Next, as shown in FIGS. 13 to 16, the airbag 30 is also folded in the front-rear direction. That is, as shown in FIG. 13, the front portion of the airbag 30 from the gas inlet port 32h is folded in a bellows shape a plurality of times (for example, twice) to form a front folded portion 36a, and the front folded portion 36a is Arranged on the gas inlet 32h.

そして、図１４及び図１６に示すように、エアバッグ３０のうちガス導入口３２ｈよりも後方部分を複数回（例えば７回）蛇腹状に折畳んで後方折畳み部分３６ｂを形成し、この後方折畳み部分３６ｂを前記ガス導入口３２ｈ上であって前方折畳み部分３６ａ上に配設する。これにより、前方折畳み部分３６ａが後方折畳み部分３６ｂよりもガス導入口３２ｈ近くに位置するように配設される。なお、この後方折畳み部分３６ｂの折畳み回数は、前方折畳み部分３６ａの折畳み回数よりも大きい。エアバッグ３０の前方部分及び後方部分の折畳み形態は、必ずしも蛇腹状である必要はない。   14 and 16, the rear portion of the airbag 30 from the gas inlet 32h is folded in a bellows shape a plurality of times (for example, seven times) to form a rear folded portion 36b, and this rear folded portion is formed. The portion 36b is disposed on the gas inlet 32h and on the front folding portion 36a. Thereby, the front folding part 36a is arrange | positioned so that it may be located near the gas inlet 32h rather than the back folding part 36b. Note that the number of folding times of the rear folding part 36b is larger than the number of folding times of the front folding part 36a. The folding form of the front part and the rear part of the airbag 30 does not necessarily need to be bellows.

そして、上記のように折畳むことで、エアバッグ３０はインストルメントパネル１２内であってブラケット２８内に収容可能な形態となる。   And by folding as mentioned above, the airbag 30 becomes the form which can be accommodated in the bracket 28 in the instrument panel 12.

図１７（ａ）は保護部材５０の展開形態を示す平面図であり、図１７（ｂ）は保護部材５０の展開形態を示す側面図であり、図１８は折畳んだエアバッグ３０を保護部材５０で覆った状態を示す斜視図であり、図１９及び図２０は折畳んだエアバッグ３０を保護部材５０で覆う作業手順を示す図である。   17A is a plan view showing a deployed form of the protection member 50, FIG. 17B is a side view showing a deployed form of the protection member 50, and FIG. 18 shows the folded airbag 30 as a protection member. FIG. 19 and FIG. 20 are diagrams showing an operation procedure for covering the folded airbag 30 with the protective member 50.

保護部材５０は、略Ｔ字状の布部材５１を有している。布部材５１のうち略Ｔ字状形態で両翼部５０ａから下方に延びる帯状部５０ｃの中間部にはエアバッグ３０の膨張展開により破断容易な箇所として破断部Ｓが形成されている。破断部Ｓは、帯状部５０ｃの中間部を横切るようにしてミシン目状の切れ目を形成することにより形成されている。この破断部Ｓが形成された箇所は、折畳んだエアバッグ３０を保護部材５０で覆った状態で、インフレータ２２の上方に配設される位置である。これにより、エアバッグ３０の膨張展開力が当該破断部Ｓに効果的に作用し、より確実に判断部Ｓで破断するようになっている。ここでは、破断部Ｓが形成された箇所は、次述するように布部材５２は複数枚重ね合わされた位置でもある。また、帯状部５０ｃの中間部には、略方形状の布部材５２が重ね合されて縫合されている。ここでは、布部材５２は複数枚（ここでは２枚）重ね合わされている。布部材５１のうち追加的に布部材５２が重ね合される部分は、エアバッグ３０の膨張展開時にインストルメントパネル１２の開口１２ｈ周縁部、特に、後方側のヒンジ部１４ａを覆うように配設される部分である。これらの布部材５１，５２としては、織布を用いることが好ましい。なお、複数の布部材５２は、帯状部５０ｃの基端側（両翼部５０ａ側）で布部材５１に縫合されている。また、複数の布部材５２は、帯状部５０ｃの先端側で布部材５１に縫合されず、当該複数の布部材５２同士で縫合されている。これにより、布部材５１が上記破断部Ｓで破断した際、複数の布部材５２は、帯状部５０ｃのうち分断した基端側部分と一体となって広がるようになっている。   The protection member 50 has a substantially T-shaped cloth member 51. A rupture portion S is formed in the middle portion of the belt-like portion 50c extending downward from the both wing portions 50a in the substantially T-shaped form of the cloth member 51 as an easily breakable portion due to the inflation and deployment of the airbag 30. The fracture portion S is formed by forming a perforated cut so as to cross an intermediate portion of the belt-like portion 50c. The location where the rupture portion S is formed is a position disposed above the inflator 22 in a state where the folded airbag 30 is covered with the protective member 50. As a result, the inflating and deploying force of the airbag 30 effectively acts on the breaking portion S, and the determination portion S breaks more reliably. Here, the place where the fracture portion S is formed is also a position where a plurality of cloth members 52 are overlapped as described below. In addition, a substantially square cloth member 52 is overlapped and stitched at an intermediate portion of the belt-like portion 50c. Here, a plurality (two in this case) of cloth members 52 are overlapped. The portion of the fabric member 51 where the fabric member 52 is additionally overlapped is disposed so as to cover the peripheral edge of the opening 12h of the instrument panel 12, particularly the rear hinge portion 14a, when the airbag 30 is inflated and deployed. It is a part to be done. These cloth members 51 and 52 are preferably woven cloth. The plurality of cloth members 52 are stitched to the cloth member 51 on the base end side (both wing parts 50a side) of the belt-like part 50c. In addition, the plurality of cloth members 52 are not sewn to the cloth member 51 at the distal end side of the belt-like portion 50c, but are sewn together. Thereby, when the cloth member 51 is broken at the breakage portion S, the plurality of cloth members 52 are spread integrally with the divided proximal end portion of the belt-like portion 50c.

また、保護部材５０のうち両側外方に向けて延びる両翼部５０ａは、折畳まれたエアバッグ３０の高さ寸法を超える延出寸法に形成されている。また、保護部材５０のうち両翼部５０ａで挟まれる略中央部分５０ｂは、折畳まれたエアバッグ３０の底部の大きさ及び形状に対応する略方形状に形成され、その略中央部にガス導入口３２ｈに対応する開口５０ｈが形成されている。さらに、保護部材５０のうち前記略中央部分５０ｂの一端部から両翼部５０ａの延出方向に略直交する方向に延出する帯状部５０ｃは、折畳まれたエアバッグ３０の幅寸法と略同じ幅寸法で、かつ、当該エアバッグ３０を、その後部から上部さらに前部を経由して底部に達するように巻回できる程度の長さ寸法を有している。また、帯状部５０ｃの先端部には、ガス導入口３２ｈの一部に対応する弧状の凹部５０ｄが形成されている。   Moreover, both the wing | blade parts 50a extended toward the both sides outward among the protection members 50 are formed in the extension dimension exceeding the height dimension of the folded-up airbag 30. As shown in FIG. Further, a substantially central portion 50b sandwiched between the wing portions 50a of the protective member 50 is formed in a substantially rectangular shape corresponding to the size and shape of the bottom portion of the folded airbag 30, and gas is introduced into the substantially central portion thereof. An opening 50h corresponding to the mouth 32h is formed. Further, a band-shaped portion 50c extending from one end portion of the substantially central portion 50b of the protective member 50 in a direction substantially orthogonal to the extending direction of the two wing portions 50a is substantially the same as the width dimension of the folded airbag 30. The airbag 30 has a width dimension and a length dimension that allows the airbag 30 to be wound from the rear part to reach the bottom part via the upper part and the front part. Further, an arc-shaped recess 50d corresponding to a part of the gas introduction port 32h is formed at the tip of the band-shaped portion 50c.

この保護部材５０は、折畳まれたエアバッグ３０を次の態様で覆っている。すなわち、図１９に示すように、折畳まれたエアバッグ３０の底部を保護部材５０の略中央部分５０ｂ上に配設する。この際、ガス導入口３２ｈと開口５０ｈとを一致させる。   The protective member 50 covers the folded airbag 30 in the following manner. That is, as shown in FIG. 19, the bottom portion of the folded airbag 30 is disposed on the substantially central portion 50 b of the protection member 50. At this time, the gas inlet 32h and the opening 50h are matched.

そして、図２０に示すように、帯状部５０ｃを、折畳まれたエアバッグ３０に対して、その後部から上部さらに前部を経由して底部に達するように巻回する。この際、帯状部５０ｃの端部の凹部５０ｄを開口５０ｈの一部と一致させるようにし、エアバッグ３０をブラケット２８の底壁開口部２８ｈに取付ける際に、保護部材５０の開口５０ｈ周縁部と帯状部５０ｃの凹部５０ｄ周縁部とを重ね合せて取付固定できるようにする。   Then, as shown in FIG. 20, the belt-like portion 50c is wound around the folded airbag 30 so as to reach the bottom portion from the rear portion through the upper portion and the front portion. At this time, when the airbag 30 is attached to the bottom wall opening 28h of the bracket 28, the recess 50d at the end of the belt-like portion 50c is made to coincide with a part of the opening 50h. The concave portion 50d peripheral portion of the belt-like portion 50c is overlaid so that it can be attached and fixed.

この後、両翼部５０ａを折畳まれたエアバッグ３０の両側面にそれぞれ配設し、両翼部５０ａの端部を折畳まれたエアバッグ３０と帯状部５０ｃとの間に挿入するように配設する。   Thereafter, both wings 50a are respectively arranged on both sides of the folded airbag 30, and the ends of both wings 50a are arranged so as to be inserted between the folded airbag 30 and the belt-like part 50c. Set up.

これにより、図１８に示すように、保護部材５０が折畳まれたエアバッグ３０を覆うように取付けられる。また、エアバッグ３０は、保護部材５０で覆われた状態で、インストルメントパネル１２内のブラケット２８内に取付固定される。   Thereby, as shown in FIG. 18, the protection member 50 is attached to cover the folded airbag 30. Further, the airbag 30 is attached and fixed in the bracket 28 in the instrument panel 12 while being covered with the protective member 50.

この保護部材５０は、エアバッグ３０が膨張展開する際、その膨張展開力を受けて部分的に破断する。ここでは、保護部材５０は破断部Ｓで破断する。すると、エアバッグ３０の膨張展開に伴い、帯状部５０ｃのうち破断した基端側部分が布部材５２と共にインストルメントパネル１２の開口１２ｈ後側縁部に押出され、帯状部５０ｃのうち布部材５２が重ね合された部分が当該開口１２ｈの後側縁部、特に、後側のヒンジ部１４ａ上を覆う（図２参照）。同時に、両翼部５０ａがインストルメントパネル１２の開口１２ｈ両側縁部に押出され、当該開口１２ｈの両側縁部上を覆う。また、帯状部５０ｃのうち破断した先端側部分がインストルメントパネル１２の開口１２ｈ前側縁部上を覆う。   When the airbag 30 is inflated and deployed, the protective member 50 is partially broken by receiving the inflating and deploying force. Here, the protection member 50 is broken at the breaking portion S. Then, as the airbag 30 is inflated and deployed, the broken proximal end portion of the belt-like portion 50c is pushed together with the cloth member 52 to the rear edge of the opening 12h of the instrument panel 12, and the cloth member 52 of the belt-like portion 50c is pushed. The portion where the two are overlapped covers the rear edge of the opening 12h, in particular, the hinge portion 14a on the rear side (see FIG. 2). At the same time, both wing parts 50a are pushed out to both side edges of the opening 12h of the instrument panel 12, and cover both side edges of the opening 12h. Further, the broken front end portion of the band-shaped portion 50 c covers the front edge of the opening 12 h of the instrument panel 12.

これにより、膨張展開するエアバッグ３０とインストルメントパネル１２の開口１２ｈ周縁部のうち後側縁部と両側縁部と前側縁部との直接接触が回避される。   Thereby, the direct contact with the rear edge part, both side edge part, and front edge part is avoided among the airbag 30 and the opening 12h peripheral part of the instrument panel 12 which are inflated and deployed.

なお、ここでは、保護部材５０は、折畳まれたエアバッグ３０のほぼ全体を覆っているが、必ずしもその必要はない。例えば、保護部材５０の前方部分と上方部分と後方部分だけを覆う形態であってもよい。また、エアバッグ３０とインストルメントパネル１２の開口１２ｈ周縁部との直接接触の回避を目的とする部分以外については、紐状に形成してもよい。さらに、エアバッグ３０の膨張展開時に破断する部分は、上記の場所以外であってもよい。例えば、帯状部５０ｃの凹部５０ｄをブラケット２８の底壁開口部２８ｈに取付けた部分で破断する構成であってもよい。   Here, the protection member 50 covers almost the entire folded airbag 30, but it is not always necessary. For example, the form which covers only the front part of the protection member 50, an upper part, and a rear part may be sufficient. Moreover, you may form in a string form except for the part aiming at avoiding the direct contact between the airbag 30 and the opening 12h peripheral part of the instrument panel 12. Further, the portion that breaks when the airbag 30 is inflated and deployed may be other than the above-mentioned place. For example, a configuration in which the concave portion 50d of the belt-like portion 50c is broken at a portion attached to the bottom wall opening 28h of the bracket 28 may be employed.

このように構成された助手席用エアバッグ装置２０の動作について説明する。図２１及び図２２はエアバッグ３０の展開動作途中の状態を示す図である。   The operation of the passenger seat airbag device 20 configured as described above will be described. 21 and 22 are views showing a state during the deployment operation of the airbag 30. FIG.

まず、通常状態では、図２に示すように、助手席前方にあるインストルメントパネル１２の上面内部に、折畳まれたエアバッグ３０がブラケット２８に取付固定されている。このブラケット２８には、インフレータ２２が取付けられており、インフレータ２２の一端部のガス噴出部２４はガス導入口３２ｈ及び連通孔４２を通じてエアバッグ３０及び整流体４０内に配設されている。また、この状態で、保護部材５０はエアバッグ３０を覆っている。   First, in the normal state, as shown in FIG. 2, the folded airbag 30 is attached and fixed to the bracket 28 inside the upper surface of the instrument panel 12 in front of the passenger seat. The inflator 22 is attached to the bracket 28, and the gas ejection portion 24 at one end of the inflator 22 is disposed in the airbag 30 and the rectifying body 40 through the gas introduction port 32 h and the communication hole 42. In this state, the protection member 50 covers the airbag 30.

そして、図２１に示すように、車両の衝突時等に、インフレータ２２が作動すると、インフレータ２２のガス噴出部２４のガス噴出口２４ｈからガスが噴出される。このガスは、整流体４０内に導入され、その一端側開口４０ｈを通ってエアバッグ３０内の前部側に供給される。これにより、エアバッグ３０が膨張展開し、エアバッグ３０はインストルメントパネル１２のドア片１４を割開いて、インストルメントパネル１２の上方に膨張展開しようとする。   As shown in FIG. 21, when the inflator 22 is activated during a vehicle collision or the like, gas is ejected from the gas ejection port 24 h of the gas ejection part 24 of the inflator 22. This gas is introduced into the rectifying body 40 and supplied to the front side in the airbag 30 through the one end side opening 40h. As a result, the airbag 30 is inflated and deployed, and the airbag 30 attempts to inflate and deploy above the instrument panel 12 by splitting the door piece 14 of the instrument panel 12.

この際、ガスは、整流体４０内を通ってその一端側開口４０ｈからエアバッグ３０内の前部側に供給される。従って、エアバッグ３０のうち前方折畳み部分３６ａがまず膨張展開する。エアバッグ３０の後方折畳み部分３６ｂに対してはほとんどガスが供給されないので、この初期段階では、当該後方折畳み部分３６ｂはほとんど膨張しない。そして、エアバッグ３０のうち前方折畳み部分３６ａがある程度膨張展開すると、後方折畳み部分３６ｂが上後方に押出される。   At this time, the gas passes through the rectifier 40 and is supplied from the one end side opening 40 h to the front side in the airbag 30. Accordingly, the front folding portion 36a of the airbag 30 is first inflated and deployed. Since almost no gas is supplied to the rear folded portion 36b of the airbag 30, the rear folded portion 36b hardly expands at this initial stage. And if the front folding part 36a of the airbag 30 is inflated and deployed to some extent, the rear folding part 36b is pushed upward and rearward.

また、エアバッグ３０が膨張展開しようとする際、保護部材５０は、帯状部５０ｃのうち破断部Ｓが形成された箇所で破断する。そして、エアバッグ３０の膨張展開に伴い、帯状部５０ｃのうち基端側部分がインストルメントパネル１２の開口１２ｈ後側縁部に押出され、帯状部５０ｃの基端側部分のうち布部材５２が重ね合された部分が当該開口１２ｈの後側縁部、特に、後側のヒンジ部１４ａ上を覆う。また、両翼部５０ａがインストルメントパネル１２の開口１２ｈ両側縁部に押出され、当該開口１２ｈの両側縁部上を覆う。また、帯状部５０ｃのうち破断した先端側部分がインストルメントパネル１２の開口１２ｈ前側縁部上を覆う。これにより、エアバッグ３０とインストルメントパネル１２の開口１２ｈ後側縁部及び両側縁部、前側縁部間に保護部材５０を介在させた状態で、エアバッグ３０が膨張展開する。本エアバッグ３０は、インストルメントパネル１２から後方に向けて膨張展開するため、当該エアバッグ３０は、インストルメントパネル１２の開口１２ｈ後側縁部に比較的大きな力で押付けられる傾向にある。そこで、帯状部５０ｃのうち布部材５２が重ね合された部分を、当該開口１２ｈの後側縁部とエアバッグ３０との間に介在させることで、インストルメントパネル１２の開口１２ｈ後側縁部とエアバッグ３０との接触によるエアバッグ３０の破損等を有効に防止することができる。   Further, when the airbag 30 is about to be inflated and deployed, the protective member 50 is broken at a location where the breaking portion S is formed in the belt-like portion 50c. As the airbag 30 is inflated and deployed, the base end side portion of the belt-like portion 50c is pushed out to the rear edge of the opening 12h of the instrument panel 12, and the cloth member 52 is included in the base end side portion of the belt-like portion 50c. The overlapped portion covers the rear edge of the opening 12h, particularly the rear hinge portion 14a. Further, both wing parts 50a are pushed out to both side edges of the opening 12h of the instrument panel 12, and cover both side edges of the opening 12h. Further, the broken front end portion of the band-shaped portion 50 c covers the front edge of the opening 12 h of the instrument panel 12. As a result, the airbag 30 is inflated and deployed in a state where the protective member 50 is interposed between the airbag 30 and the opening 12h rear side edge, both side edges, and the front edge of the instrument panel 12. Since the airbag 30 is inflated and deployed rearward from the instrument panel 12, the airbag 30 tends to be pressed against the rear edge of the opening 12h of the instrument panel 12 with a relatively large force. Therefore, the portion of the belt-like portion 50c on which the cloth member 52 is overlapped is interposed between the rear edge of the opening 12h and the airbag 30, so that the rear edge of the opening 12h of the instrument panel 12 is obtained. Damage to the airbag 30 due to contact between the airbag 30 and the airbag 30 can be effectively prevented.

エアバッグ３０のうち前方折畳み部分３６ａがほぼ完全に膨張すると、図２２に示すように、インフレータ２２から供給されるガスは、整流体４０の一端側開口４０ｈからエアバッグ３０内の前部空間を経由してエアバッグ３０の後方部分に流れ込む。これにより、エアバッグ３０のうち後方折畳み部分３６ｂも膨張するようになる。この際、エアバッグ３０のうち前方折畳み部分３６ａがほぼ完全に膨張して袋状になっているので、そのほぼ完全に膨張した前方折畳み部分３６ａを起点（固定点）として、後方折畳み部分３６ｂが膨張展開する。また、ほとんど全てのガスが前方折畳み部分３６ａの内周面を経由して前方に向けた気流を形成しつつ後方折畳み部分３６ｂに流れ込む。従って、当該後方折畳み部分３６ｂは主として後方に向けた方向に膨張展開することになる。   When the front folding portion 36a of the airbag 30 is almost completely inflated, the gas supplied from the inflator 22 passes through the front space in the airbag 30 from the one end side opening 40h of the rectifier 40, as shown in FIG. It flows into the rear part of the airbag 30 via. Thereby, the back folding part 36b of the airbag 30 also comes to inflate. At this time, since the front folding portion 36a of the airbag 30 is almost completely inflated to form a bag shape, the rear folding portion 36b is set with the almost completely inflated front folding portion 36a as a starting point (fixed point). Inflates and expands. Moreover, almost all gas flows into the back folding part 36b, forming the airflow toward the front via the inner peripheral surface of the front folding part 36a. Accordingly, the rear folding portion 36b is inflated and deployed mainly in the direction toward the rear.

ちなみに、エアバッグの膨張途中で後方にも向けてガスが導入されていると、前方折畳み部分の膨張展開が不十分な状態で、後方折畳み部分にもガスが流れ込んで膨張を開始するので、乗員側に向けた膨張展開力は不十分となってしまう。   By the way, if gas is introduced toward the rear in the middle of inflation of the airbag, the inflated deployment of the front folding part is insufficient, and gas flows into the rear folding part and starts to inflate. The expansion / deployment force toward the side becomes insufficient.

そして、図３に示すように、エアバッグ３０のうち後方折畳み部分３６ｂが後方に向けて大きく膨張展開することで、エアバッグ３０がインストルメントパネル１２の上方及び乗員側で大きく膨張展開する。これにより、車両の衝撃により、助手席乗員が前傾するように姿勢変更すると、助手席乗員の頭部や胸部等がエアバッグ３０の後方部分の大きく膨張展開した部分に当接し、当該乗員に加わった衝撃が吸収される。   Then, as shown in FIG. 3, the rear folding portion 36b of the airbag 30 is greatly inflated and deployed rearward, so that the airbag 30 is inflated and deployed greatly above the instrument panel 12 and on the passenger side. As a result, when the posture of the passenger seat occupant is changed so as to tilt forward due to the impact of the vehicle, the head, chest, etc. of the passenger occupant abuts on the greatly inflated and deployed portion of the rear portion of the airbag 30, and The applied impact is absorbed.

以上のように構成された助手席用エアバッグ装置２０によると、インフレータ２２から供給されるガスは、整流体４０を通ってエアバッグ３０内に供給される。そして、整流体４０は、エアバッグ３０の膨張展開途中でその開口４０ｈをエアバッグ３０の前部内面側に対向させる。この際、整流体４０の開口４０ｈを通ってエアバッグ３０内に供給されるガスは、エアバッグ３０のうち前部部分を膨張展開させる。そして、エアバッグ３０の前部部分がほぼ完全に膨張した後、整流体４０の開口４０ｈを通って供給されるガスは、エアバッグ３０の前後方向中間部及び後部部分に供給され、エアバッグ３０全体が膨張展開することになる。このため、エアバッグ３０の前部部分のほぼ完全な膨張形態によって、エアバッグ３０が乗員側に向けて膨張展開するようにコントロールすることができる。従って、ウインドシールドＷの傾斜の有無、程度に拘らず、助手席用のエアバッグ３０を乗員側に向けて素早く展開できるようにすることができる。   According to the passenger airbag device 20 configured as described above, the gas supplied from the inflator 22 is supplied into the airbag 30 through the rectifier 40. And the rectifier 40 makes the opening 40 h face the front inner surface side of the airbag 30 during the inflation and deployment of the airbag 30. At this time, the gas supplied into the airbag 30 through the opening 40 h of the rectifying body 40 inflates and deploys the front portion of the airbag 30. Then, after the front portion of the airbag 30 is almost completely inflated, the gas supplied through the opening 40h of the rectifier 40 is supplied to the front-rear direction intermediate portion and the rear portion of the airbag 30. The whole expands and expands. For this reason, the airbag 30 can be controlled to be inflated and deployed toward the occupant side by the almost complete inflated form of the front portion of the airbag 30. Therefore, regardless of whether the windshield W is inclined or not, it is possible to quickly deploy the passenger seat airbag 30 toward the passenger.

また、整流体４０の縫合部４６ａ，４７ａは、ガス噴出口２４ｈに対向する位置を除く位置に形成されているので、強度が比較的弱い縫合部４６ａ，４７ａにガスが直接あたらない。このため、ガス噴出による整流体４０の破損を防止できる。また、縫合部４６ａ，４７ａの強度を極端に強くすべく多数回縫合する必要がないので、縫合作業を効率よく行える。   Further, since the stitched portions 46a and 47a of the rectifying body 40 are formed at positions excluding the position facing the gas jet port 24h, the gas does not directly hit the stitched portions 46a and 47a having relatively low strength. For this reason, damage to the rectifier 40 due to gas ejection can be prevented. Further, since it is not necessary to sew many times in order to make the strength of the stitched portions 46a and 47a extremely strong, the stitching operation can be performed efficiently.

さらに、前方折畳み部分３６ａが後方折畳み部分３６ｂよりもガス導入口３２ｈ近くに位置しているので、整流体４０を経由してエアバッグ３０内にガスが導入されると、まず、前方折畳み部分３６ａが蛇腹折りを解消させながら後方折畳み部分３６ｂを後方に押退けつつ膨張展開する。この後、後方折畳み部分３６ｂの蛇腹折りを解消させつつ左右方向へも広がりながら膨張展開する。これにより、エアバッグ３０を円滑かつ素早く展開させることができる。   Furthermore, since the front folding part 36a is located closer to the gas introduction port 32h than the rear folding part 36b, when gas is introduced into the airbag 30 via the rectifier 40, first, the front folding part 36a. While the bellows fold is eliminated, the rear folding portion 36b is pushed back and expanded and deployed. Thereafter, the bellows-folding of the rear folding portion 36b is eliminated, and it expands and expands while spreading in the left-right direction. Thereby, the airbag 30 can be smoothly and rapidly deployed.

また、保護部材５０は、エアバッグ３０の膨張展開により破断してインストルメントパネル１２の開口１２ｈ周縁部の少なくとも一部とエアバッグ３０との間に介在する。このため、インストルメントパネル１２の開口１２ｈ周縁部とエアバッグ３０との直接接触が回避され、エアバッグ３０及びインストルメントパネル１２の開口１２ｈ周縁部の破損を防止できる。   Further, the protective member 50 is broken by the inflation and deployment of the airbag 30 and is interposed between at least a part of the peripheral edge of the opening 12h of the instrument panel 12 and the airbag 30. For this reason, direct contact with the opening 12h peripheral part of the instrument panel 12 and the airbag 30 is avoided, and damage to the airbag 30 and the opening 12h peripheral part of the instrument panel 12 can be prevented.

また、インストルメントパネル１２の開口１２ｈ後側周縁部とエアバッグ３０との間に、布を重ね合せた部分を配設しているため、両者の接触衝撃がより有効に緩和され、両者の接触による破損を有効に防止できる。   Moreover, since the part which overlap | superposed the cloth is arrange | positioned between the opening 12h rear side peripheral part of the opening 12 of the instrument panel 12, and the airbag 30, both contact impacts are relieve | moderated more effectively and both contact Damage due to can be effectively prevented.

保護部材５０は、インストルメントパネル１２の開口１２ｈ周縁部のうち少なくとも一部とエアバッグ３０との間で介在する構成であればよい。特に、エアバッグ３０は後方に向けて膨張展開し、開口１２ｈ周縁部のうち後方部分に強く押付けられる傾向にある。このため、保護部材５０は、インストルメントパネル１２の開口１２ｈ後側周縁部とエアバッグ３０との間で介在する構成であることが好ましい。また、上記ヒンジ部１４ａは内側に突出しているため、そのようなヒンジ部１４ａとエアバッグ３０との接触衝撃を回避するという観点からは、保護部材５０は、インストルメントパネル１２の開口１２ｈ周縁部のうちドア片１４を開閉自在に連結するヒンジ部１４ａとエアバッグ３０との間で介在する構成であることが好ましい。   The protection member 50 may be configured to be interposed between at least a part of the peripheral edge of the opening 12h of the instrument panel 12 and the airbag 30. In particular, the airbag 30 is inflated and deployed toward the rear, and tends to be strongly pressed against the rear portion of the periphery of the opening 12h. For this reason, it is preferable that the protection member 50 is configured to be interposed between the opening 12h rear peripheral edge portion of the instrument panel 12 and the airbag 30. Moreover, since the said hinge part 14a protrudes inside, from a viewpoint of avoiding such a contact impact with the hinge part 14a and the airbag 30, the protection member 50 is the opening 12h peripheral part of the instrument panel 12 Of these, a configuration in which the door piece 14 is connected between the airbag 30 and the hinge portion 14a that can be freely opened and closed is preferable.

また、上記保護部材５０は、折畳まれたエアバッグ３０を覆っており、この状態で、エアバッグ３０をブラケット２８に取付けることができるため、エアバッグ３０組込時における取扱い作業が容易である。   Moreover, since the protective member 50 covers the folded airbag 30 and the airbag 30 can be attached to the bracket 28 in this state, the handling work when the airbag 30 is assembled is easy. .

発明者らは実際に実験を行い、上記実施形態に係るエアバッグ３０を膨張展開させた場合の変化状態を観察した。   The inventors actually conducted an experiment and observed a change state when the airbag 30 according to the above-described embodiment was inflated and deployed.

図２３は、実施形態に係るエアバッグ３０を膨張展開させた場合の変化状態を示す図である。図２３では、実際の実験結果に基づく撮影写真からエアバッグ３０の輪郭を抽出して示してある。図２３（ａ）、図２３（ｂ）、図２３（ｃ）、図２３（ｄ）、図２３（ｅ）、図２３（ｆ）は、インフレータ２２点火開始後の経時順である。   FIG. 23 is a diagram illustrating a change state when the airbag 30 according to the embodiment is inflated and deployed. In FIG. 23, the outline of the airbag 30 is extracted from the photograph taken based on the actual experimental results. FIG. 23A, FIG. 23B, FIG. 23C, FIG. 23D, FIG. 23E, and FIG. 23F are in chronological order after the ignition of the inflator 22 is started.

図２３（ａ）、図２３（ｂ）、図２３（ｃ）において、展開初期では、エアバッグ３０の前方部分が主として膨張展開し、後方部分は折畳まれたままの形態でほとんど膨張展開していないことがわかる。   23 (a), 23 (b), and 23 (c), at the initial stage of deployment, the front portion of the airbag 30 is mainly inflated and deployed, and the rear portion is inflated and deployed in a folded state. You can see that it is not.

そして、図２３（ｄ）、図２３（ｅ）、図２３（ｆ）に示すよいに、エアバッグ３０の前方部分がほぼ完全に膨張してからエアバッグ３０の後方部分も膨張を開始していることがわかる。この際、エアバッグ３０の後方部分は、エアバッグ３０の前方部分を基準として、主として後方に向けて膨張展開していることがわかる。   As shown in FIGS. 23 (d), 23 (e), and 23 (f), after the front portion of the airbag 30 is almost completely inflated, the rear portion of the airbag 30 also starts to inflate. I understand that. At this time, it can be seen that the rear portion of the airbag 30 is inflated and deployed mainly toward the rear with respect to the front portion of the airbag 30.

このように、実際の実験結果から、乗員側である後方へ迅速に展開していることがわかった。   Thus, from the actual experimental results, it was found that the vehicle was rapidly deployed rearward on the passenger side.

膨張展開した状態でのエアバッグ及び整流体を示す斜視図である。It is a perspective view which shows the airbag and rectification | straightening body in the state which inflate-deployed. インストルメントパネルに組込まれて収納されたエアバッグ装置を示す一部断面側面図である。It is a partial cross section side view which shows the airbag apparatus integrated and accommodated in the instrument panel. インストルメントパネルに組込まれたエアバッグ装置が膨張展開した状態を示す一部断面側面図である。It is a partial cross section side view which shows the state which the airbag apparatus incorporated in the instrument panel expanded and expanded. 図４（ａ）は整流体の折畳み及び縫合形態を示す平面図であり、図４（ｂ）は図４（ａ）のＩＶｂ−ＩＶｂ線断面図である。Fig.4 (a) is a top view which shows the folding and sewing form of a rectifier, FIG.4 (b) is the IVb-IVb sectional view taken on the line of Fig.4 (a). 図５（ａ）は整流体の折畳み及び縫合形態を示す平面図であり、図５（ｂ）は図５（ａ）のＶｂ−Ｖｂ線断面図である。Fig.5 (a) is a top view which shows the folding and sewing form of a rectifier, FIG.5 (b) is the Vb-Vb sectional view taken on the line of Fig.5 (a). 図６（ａ）は整流体の折畳み及び縫合形態を示す平面図であり、図６（ｂ）は図６（ａ）のＶＩｂ−ＶＩｂ線断面図である。Fig.6 (a) is a top view which shows the folding and sewing form of a rectification | straightening body, FIG.6 (b) is VIb-VIb sectional view taken on the line of Fig.6 (a). 図７（ａ）は整流体の折畳み及び縫合形態を示す平面図であり、図７（ｂ）は図７（ａ）のＶＩＩｂ−ＶＩＩｂ線断面図である。Fig.7 (a) is a top view which shows the folding and sewing form of a rectification | straightening body, FIG.7 (b) is the VIIb-VIIb sectional view taken on the line of Fig.7 (a). エアバッグ３０の折畳み例を示す図である。It is a figure which shows the example of folding of the airbag 30. FIG. エアバッグ３０の折畳み例を示す図である。It is a figure which shows the example of folding of the airbag 30. FIG. エアバッグ３０の折畳み例を示す図である。It is a figure which shows the example of folding of the airbag 30. FIG. エアバッグ３０の折畳み例を示す図である。It is a figure which shows the example of folding of the airbag 30. FIG. エアバッグ３０の折畳み例を示す図である。It is a figure which shows the example of folding of the airbag 30. FIG. エアバッグ３０の折畳み例を示す図である。It is a figure which shows the example of folding of the airbag 30. FIG. エアバッグ３０の折畳み例を示す図である。It is a figure which shows the example of folding of the airbag 30. FIG. エアバッグ３０の折畳み例を示す図である。It is a figure which shows the example of folding of the airbag 30. FIG. エアバッグ３０の折畳み例を示す図である。It is a figure which shows the example of folding of the airbag 30. FIG. 図１７（ａ）は保護部材の展開形態を示す平面図であり、図１７（ｂ）は保護部材の展開形態を示す側面図である。FIG. 17A is a plan view showing a developed form of the protection member, and FIG. 17B is a side view showing a developed form of the protection member. 折畳んだエアバッグを保護部材で覆った状態を示す斜視図である。It is a perspective view which shows the state which covered the folded airbag with the protection member. 折畳んだエアバッグを保護部材で覆う作業手順を示す図である。It is a figure which shows the operation | work procedure which covers the folded airbag with a protection member. 折畳んだエアバッグを保護部材で覆う作業手順を示す図である。It is a figure which shows the operation | work procedure which covers the folded airbag with a protection member. エアバッグの展開動作途中の状態を示す図である。It is a figure which shows the state in the middle of deployment operation | movement of an airbag. エアバッグの展開動作途中の状態を示す図である。It is a figure which shows the state in the middle of deployment operation | movement of an airbag. 図２３（ａ）〜図２３（ｆ）は実施形態に係るエアバッグ３０を膨張展開させた場合の変化状態を示す図である。Fig.23 (a)-FIG.23 (f) are figures which show the change state at the time of inflating and deploying the airbag 30 which concerns on embodiment.

符号の説明Explanation of symbols

１２ インストルメントパネル
１２ｈ 開口
２０ エアバッグ装置
２２ インフレータ
２４ ガス噴出部
２４ｈ ガス噴出口
３０ エアバッグ
３２ｈ ガス導入口
３６ａ 前方折畳み部分
３６ｂ 後方折畳み部分
４０ 整流体
４０ｈ 開口
４２ 連通孔
４６ａ，４７ａ 縫合部
４７ 略筒状布部
４８ 延出布部
５０ 保護部材 DESCRIPTION OF SYMBOLS 12 Instrument panel 12h Opening 20 Air bag apparatus 22 Inflator 24 Gas ejection part 24h Gas ejection port 30 Air bag 32h Gas introduction port 36a Front folding part 36b Back folding part 40 Rectifier 40h Opening 42 Communication hole 46a, 47a Sewing part 47 Cylindrical cloth part 48 Extension cloth part 50 Protection member

Claims (5)

インストルメントパネルに配設される助手席用エアバッグ装置であって、
ガス導入口を有する袋状に形成され、通常状態では、インストルメントパネル内で折畳み収納可能に構成されると共に、膨張時にはインストルメントパネル外に展開可能なエアバッグと、
前記ガス導入口を通じて前記エアバッグ内にガスを供給可能なインフレータと、
一端側が開口する有底筒状に形成され、側壁部に前記ガス導入口に連結された連通孔が形成された整流体と、
を備え、
前記整流体は、前記エアバッグの膨張展開途中で、その開口を前記エアバッグの前部内面側に対向させる態様で、前記エアバッグ内に組込まれた、助手席用エアバッグ装置。 An airbag device for a passenger seat disposed on an instrument panel,
An air bag that is formed in a bag shape having a gas inlet, and is configured so that it can be folded and stored in the instrument panel in a normal state, and can be deployed outside the instrument panel when inflated,
An inflator capable of supplying gas into the airbag through the gas inlet;
A rectifier body that is formed in a bottomed cylindrical shape that opens at one end side, and a communication hole that is connected to the gas introduction port on the side wall portion;
With
The rectifier is an airbag device for a passenger seat that is incorporated in the airbag in such a manner that the opening of the rectifier is opposed to the inner surface of the front portion of the airbag during the inflation and deployment of the airbag. 請求項１記載の助手席用エアバッグ装置であって、
前記インフレータは、略円盤状に形成されその外周囲にガス噴出口が形成されたガス噴出部を有し、前記ガス噴出部が前記連通孔を通って前記整流体内に配設され、
前記整流体は、基布を前記ガス噴出口に対向する位置を除く位置で縫合することで形成された、助手席用エアバッグ装置。 The airbag device for a passenger seat according to claim 1,
The inflator has a gas ejection part formed in a substantially disc shape and a gas ejection port formed in the outer periphery thereof, and the gas ejection part is disposed in the rectifier through the communication hole,
The rectifier is an airbag device for a passenger seat, which is formed by stitching a base fabric at a position excluding a position facing the gas ejection port. 請求項２記載の助手席用エアバッグ装置であって、
前記整流体は、側壁部に前記連通孔を有すると共にその連通孔に対向する側壁部に縫合部分を有する略筒状布部と、前記略筒状布部の一端部であって前記連通孔と同じ側壁部から延出する延出布部とを有し、前記延出布部が前記略筒状布部に対して前記連通孔とは反対側の側壁部で重ね合せて縫合された、助手席用エアバッグ装置。 The airbag device for a passenger seat according to claim 2,
The straightening member has the communication hole in the side wall portion and has a stitched portion in the side wall portion facing the communication hole, and one end portion of the substantially cylindrical cloth portion, the communication hole An extension cloth part extending from the same side wall part, and the extension cloth part is overlapped and stitched on the side wall part opposite to the communication hole with respect to the substantially cylindrical cloth part. Seat airbag device. 請求項１〜請求項３のいずれかに記載の助手席用エアバッグ装置であって、
前記エアバッグは、前記ガス導入口に対向する部分を前記ガス導入口側に接近させるように平面状に折畳まれると共に前後方向に亘って左右略均等幅となるように左右両側部が折畳まれた状態から、前記ガス導入口よりも前方部分が蛇腹状に折畳まれた前方折畳み部分と、前記ガス導入口よりも後方部分が蛇腹状に折畳まれた後方折畳み部分とを有し、前記前方折畳み部分が前記後方折畳み部分よりも前記ガス導入口の近くに位置する、助手席用エアバッグ装置。 An airbag device for a passenger seat according to any one of claims 1 to 3,
The airbag is folded in a flat shape so that the portion facing the gas inlet is closer to the gas inlet, and the left and right sides are folded so as to have a substantially equal width in the front-rear direction. From the folded state, it has a front folded part in which the front part is folded in a bellows shape from the gas inlet, and a rear folded part in which the rear part is folded in a bellows shape from the gas inlet. An airbag device for a passenger seat, wherein the front folding part is located closer to the gas inlet than the rear folding part. 請求項１〜請求項４のいずれかに記載の助手席用エアバッグ装置であって、
前記エアバッグの折畳み形態を覆うと共に、前記エアバッグの膨張展開により破断してインストルメントパネルの開口周縁部の少なくとも一部と前記エアバッグの間に介在可能な保護部材をさらに備えた助手席用エアバッグ装置。 An airbag device for a passenger seat according to any one of claims 1 to 4,
The passenger seat further includes a protective member that covers the folded form of the airbag and that is ruptured by inflation and deployment of the airbag and that can be interposed between at least a part of the opening peripheral edge of the instrument panel and the airbag. Airbag device.
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Cited By (8)

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JP2011068305A (en) * 2009-09-28 2011-04-07 Ashimori Industry Co Ltd Airbag device
JP2012006520A (en) * 2010-06-25 2012-01-12 Toyota Motor Corp Airbag device for front passenger seat
WO2013008854A1 (en) * 2011-07-12 2013-01-17 芦森工業株式会社 Airbag device
JP2013035459A (en) * 2011-08-09 2013-02-21 Honda Motor Co Ltd Airbag device for front passenger seat
US8465049B2 (en) 2009-12-23 2013-06-18 Takata Corporation Airbag and airbag device
US8851513B2 (en) 2011-01-14 2014-10-07 Takata Corporation Airbag and airbag device
JP2019111907A (en) * 2017-12-22 2019-07-11 芦森工業株式会社 Airbag device for front passenger seat
CN115697782A (en) * 2020-06-17 2023-02-03 奥托立夫开发公司 Passenger seat airbag device and method for manufacturing passenger seat airbag device

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JP2004001635A (en) * 2002-05-31 2004-01-08 Toyoda Gosei Co Ltd Air bag device for front passenger's seat
JP2004314866A (en) * 2003-04-18 2004-11-11 Suzuki Motor Corp Assisting sheet for airbag deployment
JP2006176018A (en) * 2004-12-22 2006-07-06 Toyoda Gosei Co Ltd Airbag for front passenger seat
JP2007261441A (en) * 2006-03-29 2007-10-11 Nippon Plast Co Ltd Airbag device

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JPH11278192A (en) * 1998-03-27 1999-10-12 Toyoda Gosei Co Ltd Air bag system for front passenger seat
JP2004001635A (en) * 2002-05-31 2004-01-08 Toyoda Gosei Co Ltd Air bag device for front passenger's seat
JP2004314866A (en) * 2003-04-18 2004-11-11 Suzuki Motor Corp Assisting sheet for airbag deployment
JP2006176018A (en) * 2004-12-22 2006-07-06 Toyoda Gosei Co Ltd Airbag for front passenger seat
JP2007261441A (en) * 2006-03-29 2007-10-11 Nippon Plast Co Ltd Airbag device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011068305A (en) * 2009-09-28 2011-04-07 Ashimori Industry Co Ltd Airbag device
US8465049B2 (en) 2009-12-23 2013-06-18 Takata Corporation Airbag and airbag device
JP2012006520A (en) * 2010-06-25 2012-01-12 Toyota Motor Corp Airbag device for front passenger seat
US8851513B2 (en) 2011-01-14 2014-10-07 Takata Corporation Airbag and airbag device
WO2013008854A1 (en) * 2011-07-12 2013-01-17 芦森工業株式会社 Airbag device
JP2013035459A (en) * 2011-08-09 2013-02-21 Honda Motor Co Ltd Airbag device for front passenger seat
JP2019111907A (en) * 2017-12-22 2019-07-11 芦森工業株式会社 Airbag device for front passenger seat
JP7013230B2 (en) 2017-12-22 2022-02-15 芦森工業株式会社 Passenger seat airbag device
CN115697782A (en) * 2020-06-17 2023-02-03 奥托立夫开发公司 Passenger seat airbag device and method for manufacturing passenger seat airbag device

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