JP2006103654A - Airbag for front passenger seat - Google Patents

Airbag for front passenger seat Download PDF

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JP2006103654A
JP2006103654A JP2004369181A JP2004369181A JP2006103654A JP 2006103654 A JP2006103654 A JP 2006103654A JP 2004369181 A JP2004369181 A JP 2004369181A JP 2004369181 A JP2004369181 A JP 2004369181A JP 2006103654 A JP2006103654 A JP 2006103654A
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airbag
portions
side wall
inflation
passenger seat
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JP4301160B2 (en
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Kazuaki Bito
和彰 尾藤
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Toyoda Gosei Co Ltd
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Toyoda Gosei Co Ltd
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Priority to US11/218,735 priority patent/US7455317B2/en
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Priority to US12/285,911 priority patent/US7708311B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an airbag for a front passenger seat capable of exactly protecting the head part of an occupant by suppressing reaction when the head part interferes with the completely inflated airbag. <P>SOLUTION: This airbag is constituted of an outside panel part 35 and an inside panel part 36. The inside panel part 36 is constituted of a pair of left and right foundation clothes 43L and 43R to bisect a region of the inside panel part 36 at the time of completion of the inflation along the horizontal direction. The inside panel part 36 is formed by connecting an edge part 43d on an outer periphery side constituted along outer peripheral edges 40a and 41a of portions 40 and 41 constituting left side and right side wall parts in the outside panel part 35 to the outer peripheral edges 40a and 41a of the portions 40 and 41 constituting the left side and right side wall parts and mutually connecting edge parts 43a on an inner peripheral side by each of the foundation clothes 43L and 43R. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、助手席前方のインストルメントパネル(以下「インパネ」と称する)の上面側に配置されるトップマウントタイプの助手席用エアバッグ装置のエアバッグに関する。   The present invention relates to an airbag for a top-mount type passenger seat airbag device disposed on the upper surface side of an instrument panel (hereinafter referred to as “instrument panel”) in front of a passenger seat.

従来、助手席用エアバッグでは、膨張完了時の前端付近となる位置に、膨張用ガスを流入させる1つのガス流入口を備えるとともに、膨張完了時における後部側となる位置に、助手席に着座した乗員と干渉可能とされる乗員保護部を備えた構成とされ、乗員保護部が、左右方向に沿って並設されるとともにガス流入口近傍で相互に連通される2つの膨張部から、構成されるものがあった(例えば、特許文献1参照)。そして、従来の助手席用エアバッグでは、左右2つの膨張部は、膨張完了時に後端側を左右方向に沿って配設される連結パネルにより連結され、乗員は、連結パネルにより受け止められる構成であった。
特開2003−335203公報(図17〜図28)
Conventionally, an airbag for a passenger seat is provided with one gas inlet through which inflation gas flows in at a position near the front end when inflation is completed, and is seated on the passenger seat at a position on the rear side when inflation is completed. The occupant protection unit is configured to be capable of interfering with the occupant, and the occupant protection unit includes two inflating units that are juxtaposed along the left-right direction and communicated with each other in the vicinity of the gas inlet. (For example, refer to Patent Document 1). In the conventional passenger seat airbag, the two left and right inflatable portions are connected by a connecting panel disposed on the rear end side along the left and right directions when the inflation is completed, and the occupant is received by the connecting panel. there were.
JP2003-335203A (FIGS. 17 to 28)

しかし、従来の助手席用エアバッグでは、乗員を受け止める連結パネルが、エアバッグの展開膨張完了時、略平面状となることから、エアバッグの膨張完了時において連結パネルが乗員と干渉した際に、乗員に与える反力を抑えて、的確に保護する点に改善の余地があった。特に、乗員の頭部は、質量が小さく、干渉時の反力を抑えて保護する点に、一層、改善の余地があった。   However, in the conventional passenger airbag, the connecting panel that catches the occupant is substantially flat when the airbag is inflated and inflated, so when the connecting panel interferes with the occupant when the airbag is inflated. There was room for improvement in terms of protecting the passengers and protecting them accurately. In particular, the occupant's head has a small mass, and there is room for further improvement in terms of protection by suppressing the reaction force during interference.

本発明は、上述の課題を解決するものであり、膨張を完了させたエアバッグに乗員の頭部が干渉した際に、反力を抑えて、乗員の頭部を的確に保護することが可能な助手席用エアバッグを提供することを目的とする。   The present invention solves the above-described problem, and when the occupant's head interferes with an airbag that has been inflated, the reaction force can be suppressed to accurately protect the occupant's head. An object is to provide a passenger airbag.

本発明に係る助手席用エアバッグは、車両の助手席前方におけるインパネの上面側に折り畳まれて収納され、膨張用ガスの流入時に、上方へ突出するとともに、インパネ上面とインパネ上方のウィンドシールドとの間を塞ぐように、車両の後方側へ展開膨張する構成とされて、
膨張完了時の前端付近となる位置に、膨張用ガスを流入させるガス流入口を備えるとともに、膨張完了時における後部側となる位置に、助手席に着座した乗員と干渉可能とされる乗員保護部を備える構成とされるとともに、
膨張完了時の形状を、頂部を前端側に配設させた略四角錐形状とされて、左右両側で略前後方向に沿って配設される左側壁部及び右側壁部と、上下両側で略左右方向に沿って配設される上側壁部及び下側壁部と、乗員側で上側壁部と下側壁部とを連結するように略左右方向に沿って配設される後側壁部と、を備える構成の助手席用エアバッグにおいて、
エアバッグが、複数の基布の周縁相互を結合させて構成されるとともに、
左側壁部及び前記右側壁部を構成する外側パネル部と、
上側壁部、下側壁部、及び、後側壁部、を構成する内側パネル部と、
から、構成され、
内側パネル部が、膨張完了時における内側パネル部の領域を左右方向に沿って2分割するように構成されるとともに、略同一形状とされる左右一対の内側パネル部用基布から、構成され、
各内側パネル部用基布が、略C字形状に湾曲した帯状とされて、外周側の縁部を、それぞれ、外側パネル部における左側・右側壁部を構成する部位の外周縁に沿わせる形状とされるとともに、
外周側の縁部を、外側パネル部における左側・右側壁部を構成する部位の外周縁に結合させ、内周側の縁部を相互に結合させることにより、内側パネル部を形成する構成とし、
乗員保護部が、膨張完了時における上部側から後部側にかけての部位に、左右方向に略沿って並設されるとともに、それぞれ上方側から後方側にかけて連続して突出するように配設される肩拘束部を備える構成とされていることを特徴とする。
An airbag for a passenger seat according to the present invention is folded and stored on the upper surface side of an instrument panel in front of the passenger seat of a vehicle, and protrudes upward when an inflating gas flows in, and includes an upper surface of the instrument panel and a windshield above the instrument panel. It is configured to expand and expand to the rear side of the vehicle so as to close the space between
An occupant protection part that is provided with a gas inflow port for allowing the inflation gas to flow in at a position near the front end when inflation is completed, and that can interfere with an occupant seated in the passenger seat at a position on the rear side when inflation is completed And a configuration comprising
The shape at the time of completion of expansion is a substantially square pyramid shape with the top portion disposed on the front end side, and the left and right wall portions disposed substantially along the front-rear direction on both the left and right sides, and substantially on both the upper and lower sides. An upper side wall portion and a lower side wall portion disposed along the left-right direction, and a rear side wall portion disposed along the substantially left-right direction so as to connect the upper side wall portion and the lower side wall portion on the passenger side. In the airbag for the passenger seat configured to include:
The airbag is configured by combining peripheral edges of a plurality of base fabrics,
An outer panel part constituting the left side wall part and the right side wall part, and
An inner panel portion constituting an upper wall portion, a lower wall portion, and a rear wall portion;
Composed of
The inner panel portion is configured to divide the region of the inner panel portion at the time of completion of expansion into two along the left-right direction, and is configured from a pair of left and right inner panel portion base fabrics having substantially the same shape,
Each inner panel base fabric is shaped like a strip that is curved in a substantially C-shape, and the outer peripheral edge is aligned with the outer peripheral edge of the portion constituting the left and right side walls of the outer panel. And
The outer peripheral side edge is coupled to the outer peripheral edge of the portion constituting the left and right side wall portions in the outer panel portion, and the inner peripheral edge portion is coupled to each other, thereby forming the inner panel portion.
Shoulder protection portions are arranged so as to extend side by side substantially along the left-right direction at portions from the upper side to the rear side at the time of completion of inflation, and are arranged so as to continuously protrude from the upper side to the rear side, respectively. It is the structure provided with a restraint part, It is characterized by the above-mentioned.

本発明の助手席用エアバッグでは、膨張完了時において、乗員保護部が、肩拘束部に挟まれた左右方向の中間部分を凹ませるように、膨張を完了させることとなる。そのため、膨張完了時のエアバッグに乗員が干渉した際に、後方に突出するように配設されている左右の肩拘束部が、まず、乗員の左右の肩部付近と干渉することとなって、乗員の前進移動する運動エネルギーが低減され、その後、両肩を肩拘束部により拘束された乗員の頭部が、肩拘束部間の凹んだ部位に侵入しつつ、前方側への移動を抑えるように、拘束されることとなる。そのため、肩拘束部によって運動エネルギーが低減された状態で、乗員の頭部を、エアバッグからの反力を抑えて、ソフトに受け止めることができる。   In the passenger seat airbag of the present invention, when the inflation is completed, the occupant protection part completes the inflation so that the middle part in the left-right direction sandwiched between the shoulder restraining parts is recessed. Therefore, when the occupant interferes with the airbag when the inflation is completed, the left and right shoulder restraint portions arranged to protrude rearward first interfere with the vicinity of the left and right shoulder portions of the occupant. The kinetic energy of the occupant moving forward is reduced, and then the head of the occupant whose both shoulders are restrained by the shoulder restraint portion enters the recessed portion between the shoulder restraint portions and suppresses the forward movement. Thus, it will be restrained. Therefore, the occupant's head can be softly received while suppressing the reaction force from the airbag while the kinetic energy is reduced by the shoulder restraining portion.

従って、本発明の助手席用エアバッグでは、膨張を完了させたエアバッグに乗員の頭部が干渉した際に、反力を抑えて、乗員の頭部を的確に保護することができる。   Therefore, in the passenger seat airbag of the present invention, when the occupant's head interferes with the inflated airbag, the reaction force can be suppressed and the occupant's head can be protected accurately.

また、本発明の助手席用エアバッグでは、膨張完了時のエアバッグにおいて、肩拘束部がそれぞれ上方側から後方側に連続して突出するように配設されており、肩拘束部間の凹んだ部位も、乗員保護部の上端側から、上下方向に略沿って連続して配設されることとなる。そのため、乗員の体格や着座姿勢により、膨張したエアバッグに干渉する乗員の頭部の位置が上下方向に移動しても、乗員の頭部を、エアバッグからの反力を抑えて、ソフトに受け止めることができる。   In the passenger seat airbag of the present invention, the shoulder restraint portions are arranged so as to continuously protrude from the upper side to the rear side in the airbag when the inflation is completed, and the recesses between the shoulder restraint portions are provided. This part is also arranged continuously along the vertical direction from the upper end side of the occupant protection part. Therefore, even if the position of the occupant's head that interferes with the inflated airbag moves up and down due to the physique and seating posture of the occupant, the occupant's head is softened with the reaction force from the airbag suppressed. I can take it.

さらに、本発明の助手席用エアバッグでは、膨張完了時における左右方向の略中央となる位置に、内側パネル部を構成する内側パネル部用基布の内周側の縁部相互を結合させた結合部位が、略前後方向に沿ったエアバッグの周方向の略全域に配設されることとなる。そして、本発明の助手席用エアバッグでは、この結合部位を構成する内側パネル部用基布の内周側の縁部が、内側パネル部用基布の外周側の縁部よりも長さ寸法を小さく設定されることから、この結合部位は、エアバッグの膨張完了時において、外側に突出せず、側方から見て、エアバッグを構成する外周縁より内周側に位置することとなる。そのため、本発明の助手席用エアバッグでは、エアバッグを構成する基布全体が、内側パネル部の内周側の結合部位に展開方向を規制されつつ、展開膨張するような態様となり、膨張完了時に乗員側となる後側壁部が乗員側に向かって大きく突出するように展開することを抑えることができて、エアバッグの膨張完了時の形状を規制することができる。その結果、エアバッグ内に、後側壁部を乗員側と反対側の前方側へ引っ張るような膨張完了時の形状を規制するテザー等を配設させなくともよく、エアバッグを構成する部品点数を低減させることが可能となる。   Further, in the passenger seat airbag of the present invention, the inner peripheral edge portions of the inner panel portion base fabric constituting the inner panel portion are coupled to each other at a substantially central position in the left-right direction when the inflation is completed. The joint portions are disposed over substantially the entire area in the circumferential direction of the airbag along substantially the front-rear direction. In the passenger seat airbag according to the present invention, the inner peripheral edge of the inner panel portion base fabric constituting the coupling portion is longer than the outer peripheral edge of the inner panel base fabric. Therefore, when the airbag is completely inflated, the coupling portion does not protrude outward and is located on the inner peripheral side from the outer peripheral edge constituting the airbag when viewed from the side. . Therefore, in the passenger seat airbag of the present invention, the entire base fabric constituting the airbag is in a state in which it is deployed and inflated while its deployment direction is restricted by the joint portion on the inner peripheral side of the inner panel portion, and the inflation is completed. It is possible to prevent the rear side wall portion on the occupant side from expanding so as to protrude greatly toward the occupant side, and it is possible to regulate the shape when the airbag is completely inflated. As a result, it is not necessary to arrange a tether or the like that restricts the shape at the time of completion of inflation, such as pulling the rear side wall portion to the front side opposite to the passenger side, and the number of parts constituting the airbag can be reduced. It can be reduced.

さらにまた、上記構成の助手席用エアバッグ装置において、エアバッグ内に、ガス流入口の上方側を覆うように配設されるとともに、ガス流入口から流入した膨張用ガスを前後両側へ整流可能に、前後方向の両端を開口させた略筒状の整流布を、配設させ、
整流布を、エアバッグの展開膨張時に、エアバッグ内において、前後両端の開口の少なくとも上部側を、インパネ上面よりも上方に突出させるように、配設させる構成とすることが好ましい。
Furthermore, in the airbag device for a passenger seat having the above-described configuration, the airbag is disposed in the airbag so as to cover the upper side of the gas inlet, and the inflation gas flowing in from the gas inlet can be rectified to both the front and rear sides. A substantially cylindrical rectifying cloth having both ends in the front-rear direction opened,
It is preferable that the rectifying cloth is arranged so that at least the upper side of the opening at the front and rear ends protrudes upward from the upper surface of the instrument panel when the airbag is deployed and inflated.

上記構成の助手席用エアバッグ装置では、エアバッグの展開膨張時において、ガス流入口から流入した膨張用ガスを、整流布の前後両端の開口から、前後方向に沿うようにして、エアバッグ内に流入させることができる。すなわち、エアバッグ内に、インパネ上面に沿わせるようにして、膨張用ガスを前後方向に沿って流入させることができることから、エアバッグの下部側、特に、エアバッグの後部の下部側をインパネに沿って展開させることができて、エアバッグが乗員側へ不必要に突出するように膨張することを抑えることができる。   In the airbag device for a passenger seat having the above configuration, when the airbag is deployed and inflated, the inflation gas that has flowed in from the gas inflow port extends from the openings at the front and rear ends of the rectifying cloth along the front-rear direction. Can be allowed to flow into. That is, since the inflation gas can flow in the front-rear direction in the airbag so as to be along the upper surface of the instrument panel, the lower part of the airbag, in particular, the lower part of the rear part of the airbag is used as the instrument panel. Therefore, the airbag can be prevented from inflating so as to protrude unnecessarily toward the occupant.

さらに、上記構成の助手席用エアバッグ装置において、整流布の左右対称的な位置に、整流布の前後両端の開口面積より小さく開口して、ガス流入口から流入した膨張用ガスを逃がし可能な貫通孔を形成すれば、エアバッグの展開膨張時において、この貫通孔から少量の膨張用ガスを逃がすことができて、整流布の前後の開口の方向を安定させることができて、膨張用ガスの流出方向を、一層、安定させることができる。その結果、左右の後方側へ突出する肩拘束部に、的確に略均等に膨張用ガスを流出させることも可能となることから、エアバッグを、一層、安定して、左右均等に展開膨張させることができる。   Furthermore, in the airbag device for a passenger seat having the above-described configuration, the inflation gas flowing in from the gas inlet can be released at a symmetrical position of the rectifying cloth by opening smaller than the opening areas of the front and rear ends of the rectifying cloth. If the through-hole is formed, a small amount of inflation gas can be released from the through-hole when the airbag is deployed and inflated, and the direction of the opening before and after the rectifying cloth can be stabilized. The outflow direction can be further stabilized. As a result, it is possible to allow the inflation gas to flow out to the shoulder restraint projecting to the left and right rear sides accurately and substantially uniformly, so that the airbag can be deployed and inflated more evenly in the left and right directions. be able to.

以下、本発明の一実施形態を図面に基づいて説明すると、実施形態の助手席用エアバッグ15は、図1に示すように、インパネ1の上面2側の内部に配置されるトップマウントタイプの助手席用エアバッグ装置Mに使用されるものである。この助手席用エアバッグ装置Mは、折り畳まれたエアバッグ15と、エアバッグ15に膨張用ガスを供給するインフレーター8と、エアバッグ15及びインフレーター8を収納保持するケース6と、エアバッグ15をケース6に取り付けるためのリテーナ11と、折り畳まれたエアバッグ15を覆うエアバッグカバー10と、を備えて構成されている。   DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, an airbag 15 for a passenger seat is a top-mount type that is disposed inside an upper panel 2 side of an instrument panel 1. It is used for the passenger seat airbag apparatus M. The passenger seat airbag apparatus M includes a folded airbag 15, an inflator 8 that supplies inflation gas to the airbag 15, a case 6 that stores and holds the airbag 15 and the inflator 8, and an airbag 15. A retainer 11 for attaching to the case 6 and an airbag cover 10 covering the folded airbag 15 are provided.

なお、本明細書での上下、前後、及び、左右の方向は、車両の直進状態における車両の上下、前後、及び、左右の方向に一致するものである。   In the present specification, the up / down, front / rear, and left / right directions correspond to the up / down, front / rear, and left / right directions of the vehicle when the vehicle is traveling straight.

エアバッグカバー10は、合成樹脂製のインパネ1と一体的に形成されて、エアバッグ15の展開膨張時に、前後2枚の扉部10a・10bをエアバッグ15に押されて開くように構成されている。また、エアバッグカバー10の扉部10a・10bの周囲には、ケース6に連結される連結壁部10cが形成されている。   The airbag cover 10 is formed integrally with the instrument panel 1 made of synthetic resin, and is configured such that when the airbag 15 is deployed and inflated, the front and rear door portions 10a and 10b are pushed by the airbag 15 and opened. ing. Further, a connecting wall portion 10 c connected to the case 6 is formed around the door portions 10 a and 10 b of the airbag cover 10.

インフレーター8は、複数のガス吐出口8bを有した略円柱状の本体部8aと、インフレーター8をケース6に取り付けるためのフランジ部8cと、を備えて構成されている。   The inflator 8 includes a substantially cylindrical main body portion 8 a having a plurality of gas discharge ports 8 b and a flange portion 8 c for attaching the inflator 8 to the case 6.

ケース6は、上端側に長方形状の開口を有した板金製の略直方体形状に形成され、インフレーター8を下方から挿入させて取り付ける略長方形板状の底壁部6aと、底壁部6aの外周縁から上方に延びてエアバッグカバー10の連結壁部10cを係止する周壁部6bと、を備えて構成されている。ケース6には、底壁部6aの部位に、車両のボディ側に連結される図示しないブラケットが、配設されている。   The case 6 is formed in a substantially rectangular parallelepiped shape made of a sheet metal having a rectangular opening on the upper end side, a substantially rectangular plate-like bottom wall portion 6a to which the inflator 8 is inserted from below and attached to the outside of the bottom wall portion 6a. And a peripheral wall portion 6b that extends upward from the periphery and engages the connecting wall portion 10c of the airbag cover 10. The case 6 is provided with a bracket (not shown) connected to the vehicle body side at the bottom wall 6a.

なお、エアバッグ15とインフレーター8とは、エアバッグ15内に配設される円環状のリテーナ11の複数のボルト11aが、エアバッグ15、インフレーター8のフランジ部8c、及び、ケース底壁部6a、を貫通して、ナット12止めされることにより、ケース6に取り付けられている。   The airbag 15 and the inflator 8 include a plurality of bolts 11a of an annular retainer 11 disposed in the airbag 15, and the airbag 15, the flange portion 8c of the inflator 8, and the case bottom wall portion 6a. , And the nut 12 is fixed to the case 6.

エアバッグ15は、エアバッグ本体16と、エアバッグ本体16内に配設される整流布29と、から構成されている。エアバッグ本体16は、図2〜5に示すように、膨張完了時の形状を、前端側を頂部とした略四角錐形状とされて、上下両側で略左右方向に沿って配設される上側・下側壁部16a・16bと、左右両側で略前後方向に沿って配設される左側・右側壁部16c・16dと、乗員側で上側壁部16aと下側壁部16bとを連結するように略左右方向に沿って配設される後側壁部16eと、を備えて構成されている。そして、実施形態のエアバッグ本体16は、膨張完了時に乗員側となる後部側に配設される乗員保護部25と、膨張完了時に乗員保護部25の前方側であってインパネ1とウィンドシールド4との間に配設される前端側を閉塞された略筒形状の車体側部17と、を備えて構成されており、膨張完了時のエアバッグ本体16における下側壁部16bの前端側となる車体側部17の左右方向の中央付近となる部位に、膨張用ガスを流入させるように円形に開口されて、周縁18をケース6に取り付けるガス流入口19を、配設させて構成されている。ガス流入口19の周縁18には、リテーナ11のボルト11aを挿通させて、流入口周縁18をケース6の底壁部6aに取り付けるための複数の取付孔20が、形成されている。   The airbag 15 includes an airbag main body 16 and a rectifying cloth 29 disposed in the airbag main body 16. As shown in FIGS. 2 to 5, the airbag main body 16 has an inflated shape with a substantially quadrangular pyramid shape with the front end as the top, and is disposed on the upper and lower sides along the substantially left-right direction. The lower side wall portions 16a and 16b, the left and right side wall portions 16c and 16d arranged substantially in the front-rear direction on both the left and right sides, and the upper side wall portion 16a and the lower side wall portion 16b are connected on the passenger side. And a rear side wall portion 16e disposed substantially along the left-right direction. The airbag main body 16 according to the embodiment includes an occupant protection unit 25 disposed on the rear side that is the occupant side when inflation is completed, and the instrument panel 1 and the windshield 4 on the front side of the occupant protection unit 25 when inflation is completed. A substantially cylindrical vehicle body side portion 17 that is closed between the front end side and disposed between the front end side and the front end side of the lower side wall portion 16b of the airbag main body 16 when the inflation is completed. A gas inlet 19 that is opened in a circular shape so as to allow the inflation gas to flow into a portion of the vehicle body side portion 17 near the center in the left-right direction and that attaches the peripheral edge 18 to the case 6 is provided. . A plurality of mounting holes 20 are formed in the peripheral edge 18 of the gas inlet 19 for inserting the bolt 11 a of the retainer 11 and attaching the inlet peripheral edge 18 to the bottom wall portion 6 a of the case 6.

乗員保護部25は、左右両側に並設されて上下方向に延びるように後方側へ突出する突出部としての肩拘束部26(26L・26R)と、左右の肩拘束部26L・26R間で上部から後部にかけて凹む凹部27と、を備えて構成されている。そして、実施形態の場合、左右の肩拘束部26L・26Rの隆起した状態と、凹部27の凹んだ状態と、は、エアバッグ本体16の後側壁部16eから上側・下側壁部16a・16bの領域内となる前方側に延びるように、車体側部17のガス流入口19近傍となる部位にかけて連続的に延設されて、後述する第1基布38の下側部位39の部位で、凹凸状態がおさまって平面状となっている(図2参照)。   The occupant protection unit 25 is provided between the shoulder restraint portions 26 (26L and 26R) as projecting portions that are juxtaposed on both the left and right sides and extend in the vertical direction, and between the left and right shoulder restraint portions 26L and 26R. And a recess 27 that is recessed from the rear to the rear. In the case of the embodiment, the raised state of the left and right shoulder restraining portions 26L and 26R and the depressed state of the recessed portion 27 are determined from the rear side wall portion 16e of the airbag body 16 to the upper and lower side wall portions 16a and 16b. It extends continuously to a portion near the gas inlet 19 of the vehicle body side portion 17 so as to extend to the front side in the region, and is uneven at a portion of the lower portion 39 of the first base fabric 38 to be described later. The state is flattened (see FIG. 2).

整流布29は、図4・5に示すように、エアバッグ本体16内において、ガス流入口19の上方側を覆うように配設されるとともに、ガス流入口19から流入した膨張用ガスGを前後両側へ整流可能に、前後方向の両端を開口させた略筒形状とされている。すなわち、実施形態のエアバッグ15では、ガス流入口19から流入した膨張用ガスGは、整流布29の前後の開口30A・30Bから、エアバッグ本体16内に流入することとなる。整流布29は、図1・14・15に示すように、エアバッグ15の展開膨張時において、前後両端の開口30A・30Bの上部側を、インパネ1の上面2よりも上方に突出させるように、配設されている。実施形態の場合、整流布29は、ガス流入口19の前後左右の寸法より大きく、かつ、後述する連通孔22の内周縁と干渉しない大きさで、さらに、エアバッグ本体16の展開膨張時に、ガス流入口19の中央付近と対向する前後方向の断面形状を、ガス流入口19から離れる上方へ膨らむ円弧状の曲線状としている。また、整流布29には、左右対称的な位置に、整流布29の前後両端の開口30A・30Bの開口面積より小さく開口して、ガス流入口19から流入した膨張用ガスを逃がし可能な貫通孔31が、形成されている。実施形態の場合、貫通孔31は、ガス流入口19の中心を基準として左右対称となる2箇所に、円形に開口して、形成されている(図5参照)。実施形態の場合、整流布29は、図6に示す整流布用素材50から、構成されている。この整流布用素材50は、略長方形状の連結部51と、連結部51の左右両側から延びる延設部52・52と、から構成されている。連結部51は、周縁をエアバッグ本体16を構成する後述する第1基布38の下側部位39に縫着されるとともに、ガス流入口19に対応した開口51aと、取付孔20に対応した開口51bと、を備える構成である。延設部52・52は、連結部51から離れた側の縁部52a・52a相互を縫着させる構成である。延設部52・52の部位には、開口51aの左右両側であって、開口51aの中心を基準とした左右対称となる位置に、貫通孔31が、それぞれ、形成されている。   As shown in FIGS. 4 and 5, the rectifying cloth 29 is disposed so as to cover the upper side of the gas inlet 19 in the airbag body 16, and the inflation gas G that has flowed in from the gas inlet 19. It is made into the substantially cylindrical shape which opened both ends of the front-back direction so that rectification | straightening was possible to the front-back both sides. That is, in the airbag 15 of the embodiment, the inflation gas G that has flowed from the gas inlet 19 flows into the airbag body 16 through the openings 30 </ b> A and 30 </ b> B before and after the rectifying cloth 29. As shown in FIGS. 1, 14, and 15, the rectifying cloth 29 projects the upper sides of the openings 30 </ b> A and 30 </ b> B at the front and rear ends upward from the upper surface 2 of the instrument panel 1 when the airbag 15 is deployed and inflated. Arranged. In the case of the embodiment, the rectifying cloth 29 is larger than the front, rear, left and right dimensions of the gas inlet 19 and does not interfere with the inner peripheral edge of the communication hole 22 described later. The cross-sectional shape in the front-rear direction facing the vicinity of the center of the gas inlet 19 is an arcuate curved shape that swells upward away from the gas inlet 19. Further, the rectifying cloth 29 is opened at a symmetrical position smaller than the opening areas of the openings 30A and 30B at both the front and rear ends of the rectifying cloth 29 so that the expansion gas flowing in from the gas inlet 19 can be released. A hole 31 is formed. In the case of the embodiment, the through-hole 31 is formed in a circular shape at two locations that are symmetrical with respect to the center of the gas inlet 19 (see FIG. 5). In the case of the embodiment, the rectifying cloth 29 is composed of the rectifying cloth material 50 shown in FIG. The straightening cloth material 50 includes a substantially rectangular connecting portion 51 and extending portions 52 and 52 extending from the left and right sides of the connecting portion 51. The connecting portion 51 is sewn to the lower portion 39 of the first base fabric 38 (described later) constituting the airbag body 16 at the periphery, and corresponds to the opening 51 a corresponding to the gas inlet 19 and the mounting hole 20. And an opening 51b. The extending portions 52 and 52 are configured to sew the edge portions 52 a and 52 a on the side away from the connecting portion 51. The through holes 31 are formed in the extended portions 52 and 52 at positions on the left and right sides of the opening 51a that are symmetrical with respect to the center of the opening 51a.

また、エアバッグ本体16は、所定形状の基布の周縁相互を結合させて構成されるもので、左側・右側壁部16c・16d及び下側壁部16bの前部側部位を構成する外側パネル部35と、上側・後側壁部16a・16e及び下側壁部16bの後部側部位を構成する内側パネル部36と、から構成されている。実施形態の場合、エアバッグ本体16は、外側パネル部35を構成する1枚の第1基布38と、内側パネル部36を構成する同一形状の左右一対の内側パネル部用基布としての第2基布43L・43Rと、から構成されている。   Further, the airbag main body 16 is configured by joining the peripheral edges of a base fabric having a predetermined shape, and is an outer panel portion that constitutes front side portions of the left and right side wall portions 16c and 16d and the lower side wall portion 16b. 35 and an inner panel portion 36 that constitutes a rear side portion of the upper and rear side wall portions 16a and 16e and the lower side wall portion 16b. In the case of the embodiment, the airbag main body 16 includes a first base fabric 38 constituting the outer panel portion 35 and a first pair of left and right inner panel portions having the same shape constituting the inner panel portion 36. 2 base fabrics 43L and 43R.

第1基布38は、開いた蝶の形状に近似した左右対称形として、車体側部17におけるガス流入口19の周縁18を構成する略長方形状の下側部位39と、下側部位39から左右両側に延びるように配設される略三角板形状の左側・右側部位40・41と、を備える構成とされている。下側部位39は、膨張を完了させたエアバッグ本体16の下側壁部16bにおけるガス流入口19近傍となる前部側部位を、構成することとなる。左側・右側部位40・41は、膨張を完了させたエアバッグ本体16の左側・右側壁部16c・16dを、主に構成することとなる。また、各左側・右側部位40・41における外周縁40a・41a近傍となる部位が、それぞれ、各肩拘束部26L・26Rにおける突出頂部26aより左右方向の端部側に配設される外側壁部26bを構成することとなる。実施形態の場合、左側・右側部位40・41は、ガス流入口19の中心を通る線を中心線として線対称形に、形成されている。   The first base fabric 38 has a substantially rectangular lower part 39 constituting the peripheral edge 18 of the gas inlet 19 in the vehicle body side portion 17 and a lower part 39 as a bilaterally symmetric shape that approximates the shape of an open butterfly. The left and right side portions 40 and 41 having a substantially triangular plate shape arranged so as to extend on both the left and right sides are provided. The lower portion 39 constitutes a front portion that is in the vicinity of the gas inlet 19 in the lower wall portion 16b of the airbag body 16 that has been inflated. The left and right side portions 40 and 41 mainly constitute the left and right side wall portions 16c and 16d of the airbag body 16 that has been inflated. In addition, the outer wall portions disposed in the vicinity of the outer peripheral edges 40a and 41a in the left and right side portions 40 and 41 are disposed on the end sides in the left-right direction from the protruding top portions 26a of the shoulder restraining portions 26L and 26R, respectively. 26b is configured. In the case of the embodiment, the left and right side portions 40 and 41 are formed in line symmetry with a line passing through the center of the gas inlet 19 as a center line.

各第2基布43L・43Rは、図2・3・5に示すごとく、膨張完了時における内側パネル部36の領域を左右方向に沿って2分割するように構成されるもので、実施形態の場合、各第2基布43L・43Rは、膨張完了時のエアバッグ本体16において、上側・後側壁部16a・16eと、下側壁部16bの後部側の部位と、を構成することとなる。また、各第2基布43L・43Rは、各肩拘束部26L・26Rの突出頂部26aより左右方向の中央側に配設される内側部位26cを構成することとなる。各第2基布43L・43Rは、略C字形状に湾曲した帯状とされるもので、実施形態の場合、各第2基布43L・43Rは、外側縁部43d側の形状を、それぞれ、第1基布38における左側・右側部位40・41の周縁部40a・41aにおける元部側縁部40b・41bを除いた部位の形状と略同一とするように、形成されている。そして、各第2基布43L・43Rの内周側に形成される内側縁部43aが、凹部27のエアバッグ本体16内へ凹んだ先端27aを構成するとともに、エアバッグ本体16内において、左右の肩拘束部26L・26Rを連通する連通孔22の周縁を構成することとなる。   Each of the second base fabrics 43L and 43R is configured to divide the region of the inner panel portion 36 at the completion of the expansion into two along the left-right direction, as shown in FIGS. In this case, the second base fabrics 43L and 43R constitute the upper and rear side wall portions 16a and 16e and the rear side portion of the lower side wall portion 16b in the airbag main body 16 when the inflation is completed. Moreover, each 2nd base fabric 43L * 43R comprises the inner site | part 26c arrange | positioned from the protrusion top part 26a of each shoulder restraint part 26L * 26R to the center side of the left-right direction. Each of the second base fabrics 43L and 43R is a belt shape curved in a substantially C shape, and in the case of the embodiment, each of the second base fabrics 43L and 43R has a shape on the outer edge 43d side, respectively. The first base fabric 38 is formed so as to have substantially the same shape as the portion of the peripheral portions 40a and 41a of the left and right portions 40 and 41 excluding the base side edges 40b and 41b. And the inner edge 43a formed in the inner peripheral side of each 2nd base fabric 43L * 43R comprises the front-end | tip 27a recessed into the airbag main body 16 of the recessed part 27, and in the airbag main body 16, right and left The peripheral edge of the communication hole 22 that communicates with the shoulder restraining portions 26L and 26R is formed.

乗員保護部25における肩拘束部26L・26R及び凹部27は、第1基布38の左側・右側部位40・41と、第2基布43L・43Rと、の周縁相互を、それぞれ、縫合させて構成されている。実施形態の場合、第1基布38における左側部位40の周縁部40aと第2基布43Lの外側縁部43dとを縫着させて構成される縫合部位33Lと、右側部位41の周縁部41aと第2基布43Rの外側縁部43dとを縫着させて構成される縫合部位33Rと、が、各肩拘束部26L・26Rの突出頂部26aを構成することとなる。そして、各第2基布43L・43Rの内側縁部43a・43a相互を縫着させて構成される縫合部位34付近が、凹部27の先端27aを、構成することとなる。   The shoulder restraint portions 26L and 26R and the recess 27 in the occupant protection portion 25 are obtained by sewing the peripheral edges of the left and right side portions 40 and 41 of the first base fabric 38 and the second base fabrics 43L and 43R, respectively. It is configured. In the case of the embodiment, the sewing part 33L configured by sewing the peripheral part 40a of the left part 40 of the first base cloth 38 and the outer edge part 43d of the second base cloth 43L, and the peripheral part 41a of the right part 41. And the stitched portion 33R formed by sewing the outer edge portion 43d of the second base fabric 43R constitute the protruding top portions 26a of the shoulder restraining portions 26L and 26R. Then, the vicinity of the stitched portion 34 formed by sewing the inner edge portions 43a and 43a of the second base fabrics 43L and 43R together constitutes the tip 27a of the recess 27.

そして、実施形態のエアバッグ本体16では、乗員保護部25の凹部先端27aにおけるエアバッグ本体16の内周側において、肩拘束部26L・26Rが、連通孔22により、左右方向で連通されている。この連通孔22は、周縁を、第2基布43L・43Rの内側縁部43a・43a相互を縫着させて構成される縫合部位34(凹部27の先端27a)と、第1基布38における下側部位39と、から構成されるもので、実施形態の場合、膨張完了時のエアバッグ本体16における乗員保護部25の下部側から車体側部17の下部側にかけて配設されている。そして、この連通孔22は、エアバッグ本体16の膨張完了時において、開口面を、左右方向の略中央において前後方向に沿うように配設されている。そして、実施形態のエアバッグ本体16では、図4に示すごとく、膨張完了時のエアバッグ本体16におけるガス流入口19の略中央を通る前後方向に沿った断面でのその開口面積S1と、膨張完了時の側方から見たエアバッグ本体16全体の投影面積S2と、の面積比S1/S2を1/5〜4/5の範囲内に設定することが好ましい。S1/S2が1/5未満の場合、連通孔22が小さすぎて、エアバッグ15の展開膨張時に、一方の肩拘束部26だけが偏って膨張する虞れがあるためである。逆に、S1/S2が4/5以上の場合、肩拘束部26L・26Rの突出量(凹部27の凹み量)が相対的に小さくなって、乗員の頭部をソフトに保護できない虞れがあるためである。実施形態のエアバッグ本体16では、S1/S2は略1/2に設定されている。また、エアバッグ本体16における左側・右側壁部16c・16dには、余剰の膨張用ガスを排気するベントホール23が、それぞれ配設されている。   In the airbag main body 16 according to the embodiment, the shoulder restraining portions 26L and 26R are communicated in the left-right direction through the communication holes 22 on the inner peripheral side of the airbag main body 16 at the concave end 27a of the occupant protection portion 25. . The communication hole 22 has a peripheral portion with a stitched portion 34 (tip 27a of the concave portion 27) formed by sewing the inner edge portions 43a and 43a of the second base fabric 43L and 43R, and the first base fabric 38. In the case of the embodiment, it is arranged from the lower side of the occupant protection part 25 to the lower side of the vehicle body side part 17 in the airbag main body 16 when the inflation is completed. The communication hole 22 is disposed so that the opening surface is along the front-rear direction at the approximate center in the left-right direction when the airbag body 16 is completely inflated. And in the airbag main body 16 of embodiment, as shown in FIG. 4, the opening area S1 in the cross section along the front-back direction which passes along the approximate center of the gas inflow port 19 in the airbag main body 16 at the time of completion of inflation, and inflation It is preferable to set the area ratio S1 / S2 to the projected area S2 of the entire airbag body 16 viewed from the side at the time of completion within a range of 1/5 to 4/5. When S1 / S2 is less than 1/5, the communication hole 22 is too small, and when the airbag 15 is deployed and inflated, only one shoulder restraining portion 26 may be biased and inflated. On the contrary, when S1 / S2 is 4/5 or more, the protruding amount of the shoulder restraining portions 26L and 26R (the recessed amount of the recessed portion 27) becomes relatively small, and there is a possibility that the head of the passenger cannot be protected softly. Because there is. In the airbag main body 16 of the embodiment, S1 / S2 is set to approximately ½. In addition, vent holes 23 for exhausting excess inflation gas are provided in the left and right side wall portions 16c and 16d of the airbag body 16, respectively.

また、エアバッグ本体16には、ガス流入口周縁18を補強する補強布45・46・46と、縫合部位34の部分を補強する補強布47L・47Rと、ガス流入口周縁18を保護する保護布48と、が、配設されている。補強布45は、第1基布38における下側部位39の内周側を略全面にわたって覆い可能な形状とされており、左右両側に突出するように形成される突出部45a・45aの先端45bを、縫合部位33L・33Rの近傍に縫着させる構成とされている。補強布46・46は、ガス流入口19の周縁18を補強可能な略円形状とされている。なお、実施形態のエアバッグ15では、補強布46が2枚配設される構成であるが、補強布46の枚数はインフレーター8の出力に応じて、適宜変更可能である。補強布47L・47Rは、縫合部位34を補強可能なように、各第2基布43L・43Rの内側縁部43aに対応して略C字形状に湾曲した形状とされており、各第2基布43L・43Rの内側縁部43aを略全域にわたって覆い可能とされている。保護布48は、ガス流入口19の前後両側に延びるような略長方形状とされて、インフレーター8から吐出される膨張用ガスGが、ガス流入口19近傍に配設される縫合部位54・55や、第1基布38の下側部位39と第2基布43L・43Rとの縫着部位等に、直接当たるのを防止するために、エアバッグ本体16の内周側に配設されている。保護布48は、左右方向の縁部側を、複数箇所で、縫合部位33L・33Rの近傍に縫着させる構成とされている。実施形態の場合、保護布48は、前後両端48a・48b側と、ガス流入口19と前端48aとの間の部位48cと、の6箇所で、縫合部位33L・33Rの近傍に縫着されている。   Further, the airbag body 16 includes reinforcing cloths 45, 46, and 46 that reinforce the gas inlet peripheral edge 18, reinforcing cloths 47L and 47R that reinforce the stitched portion 34, and protection that protects the gas inlet peripheral edge 18. A cloth 48 is provided. The reinforcing cloth 45 has a shape capable of covering almost the entire inner peripheral side of the lower portion 39 of the first base cloth 38, and the tips 45b of the projecting portions 45a and 45a formed so as to project to the left and right sides. Is sewn in the vicinity of the stitched portions 33L and 33R. The reinforcing cloths 46 and 46 have a substantially circular shape capable of reinforcing the peripheral edge 18 of the gas inlet 19. In the airbag 15 of the embodiment, two reinforcing cloths 46 are arranged. However, the number of reinforcing cloths 46 can be appropriately changed according to the output of the inflator 8. The reinforcing cloths 47L and 47R are curved in a substantially C shape corresponding to the inner edge portions 43a of the second base cloths 43L and 43R so that the stitched portions 34 can be reinforced. The inner edge 43a of the base fabrics 43L and 43R can be covered over substantially the entire area. The protective cloth 48 is formed in a substantially rectangular shape extending on both the front and rear sides of the gas inlet 19, and the suture portions 54 and 55 where the inflation gas G discharged from the inflator 8 is disposed in the vicinity of the gas inlet 19. In order to prevent direct contact with the sewn part of the lower base portion 39 of the first base fabric 38 and the second base fabric 43L, 43R, etc., it is disposed on the inner peripheral side of the airbag body 16. Yes. The protective cloth 48 is configured to be sewn to the vicinity of the stitched portions 33L and 33R at a plurality of positions on the left and right edge portions. In the case of the embodiment, the protective cloth 48 is sewn in the vicinity of the suture parts 33L and 33R at six places, that is, the front and rear both ends 48a and 48b side and the part 48c between the gas inlet 19 and the front end 48a. Yes.

なお、第1・第2基布38・43L・43R、補強布45・46・47L・47R、保護布48、及び、整流布素材50は、実施形態の場合、ポリエステル糸やポリアミド糸等からなる可撓性を有した織布から形成されて、シリコン等のコーティング剤を塗布しないノンコート布として、構成されている。   In the embodiment, the first and second base fabrics 38, 43L, and 43R, the reinforcing fabrics 45, 46, 47L, and 47R, the protective fabric 48, and the rectifying fabric material 50 are made of polyester yarn, polyamide yarn, or the like. It is formed as a non-coated cloth which is formed from a woven cloth having flexibility and does not apply a coating agent such as silicon.

次に、実施形態のエアバッグ15の製造について説明する。まず、平らに展開した状態の第1基布38に、補強布45、整流布素材50、及び、補強布46・46を、順に重ね、ガス流入口19の周縁18となる取付孔20の外周側となる位置と、整流布素材50における連結部51周縁となる位置と、において、それぞれ、縫合糸を利用して、第1基布38に、補強布45・46・46・整流布素材50を縫着させ、縫合部位54・55を形成する。次いで、補強布46の上に、保護布48を重ね、ガス流入口19と取付孔20との間の部位を、略円形に縫合して、縫合部位56を形成する。その後、孔明け加工により、ガス流入口19及び取付孔20を形成する。次いで、整流布素材50における延設部52・52の縁部52a・52a相互を、縫合糸を利用して円弧状に縫合し、整流布29を所定形状に形成する。なお、実施形態では、第1基布38に補強布45・46・46・保護布48・整流布素材40を縫着させた後、孔明け加工により、ガス流入口19と取付孔20とを形成しているが、勿論、各補強布45・46・46・保護布48・整流布素材50に、ガス流入口と取付孔とを構成する開口を、それぞれ、予め形成しておいてもよい。   Next, manufacture of the airbag 15 of embodiment is demonstrated. First, the reinforcing cloth 45, the flow rectifying cloth material 50, and the reinforcing cloths 46 and 46 are sequentially stacked on the first base cloth 38 in a flatly deployed state, and the outer periphery of the mounting hole 20 serving as the peripheral edge 18 of the gas inlet 19. The reinforcing cloth 45, 46, 46, and rectifying cloth material 50 are applied to the first base cloth 38 using the suture thread at the position that becomes the side and the position that is the periphery of the connecting portion 51 in the rectifying cloth material 50. Are sewn to form the stitched portions 54 and 55. Next, the protective cloth 48 is overlaid on the reinforcing cloth 46, and the part between the gas inlet 19 and the attachment hole 20 is sewn into a substantially circular shape to form a stitched part 56. Thereafter, the gas inlet 19 and the mounting hole 20 are formed by drilling. Next, the edges 52a and 52a of the extending portions 52 and 52 in the flow regulating cloth material 50 are stitched together in an arc shape by using a suture thread, and the flow regulating cloth 29 is formed into a predetermined shape. In the embodiment, after the reinforcing cloth 45, 46, 46, the protective cloth 48, and the rectifying cloth material 40 are sewn on the first base cloth 38, the gas inlet 19 and the mounting hole 20 are formed by drilling. Of course, the reinforcing cloths 45, 46, 46, the protective cloth 48, and the rectifying cloth material 50 may be formed in advance with openings constituting the gas inlet and the mounting holes, respectively. .

次いで、第2基布43L・43Rを相互に重ね、さらに、補強布47L・47Rで、第2基布43L・43Rの内側縁部43a・43aの部位を挟むように、補強布47L・47Rを、第2基布43L・43Rに重ね、内側縁部43a・43aを、補強布47L・47Rとともに、縫合して、縫合部位34を形成する。次いで、内側縁部43aの縫い代を内側に配設させつつ、前側縁部43b・43bを略直線状に配置させるように、第2基布43L・43Rを開き、直線状に配置させた各第2基布43L・43Rの前側縁部43bを、第1基布38における下側部位39の前側縁部39aと、補強布45の前側縁部45cと、に、縫着させる。同様に、直線状に配置させた各第2基布43L・43Rの後側縁部43cを、第1基布38における下側部位39の後側縁部39bと、補強布45の後側縁部45dと、に、縫着させる。そして、下側部位39における前後の左側縁部39cを、左側部位40の周縁部40aにおける元部側縁部40bに縫着させ、右側縁部39dを、右側部位41の周縁部41aにおける元部側縁部41bに縫着させる。その後、左側部位40の周縁部40aと第2基布43Lの外側縁部43dとを縫着させて縫合部位33Lを形成し、右側部位41の周縁部41aと第2基布43Rの外側縁部43dとを縫着させて縫合部位33Rを形成する。次いで、補強布45の先端45b・45bと、保護布48における左右両縁側の部位の一部(48a・48b・48cの部位)と、を、縫合部位33L・33Rの近傍部位に、それぞれ、縫着させ、縁部の縫い代を外部に露出させないように、ガス流入口19を利用して反転させれば、エアバッグ15を製造することができる。なお、ガス流入口19を利用して反転させる作業が困難な場合には、整流布素材50の各延設部52・52の縁部52a・52a相互を縫合する作業を、エアバッグ本体16を反転させた後に、延設部52・52をガス流入口19から引き出して、行なうようにしてもよい。   Next, the second base cloths 43L and 43R are overlapped with each other, and the reinforcing cloths 47L and 47R are further sandwiched between the inner cloth edge portions 43a and 43a of the second base cloths 43L and 43R with the reinforcing cloths 47L and 47R. The inner edge portions 43a and 43a are stitched together with the reinforcing fabrics 47L and 47R to overlap the second base fabrics 43L and 43R, thereby forming the stitched portion 34. Next, the second base fabrics 43L and 43R are opened so that the front edge portions 43b and 43b are arranged substantially linearly while the seam allowance of the inner edge portion 43a is arranged on the inner side. The front edge 43b of the two base cloths 43L and 43R is sewn to the front edge 39a of the lower part 39 of the first base cloth 38 and the front edge 45c of the reinforcing cloth 45. Similarly, the rear edge 43c of each of the second base cloths 43L and 43R arranged linearly is connected to the rear edge 39b of the lower part 39 of the first base cloth 38 and the rear edge of the reinforcing cloth 45. The part 45d is sewn. Then, the left and right left side edges 39c in the lower side part 39 are sewn to the base part side edge part 40b in the peripheral part 40a of the left side part 40, and the right side edge part 39d is sewn to the base part in the peripheral part 41a of the right side part 41. The side edge portion 41b is sewn. Thereafter, the peripheral edge portion 40a of the left side portion 40 and the outer edge portion 43d of the second base cloth 43L are sewn together to form a stitched portion 33L, and the peripheral edge portion 41a of the right side portion 41 and the outer edge portion of the second base cloth 43R. 43d is sewn to form a stitched portion 33R. Next, the ends 45b and 45b of the reinforcing cloth 45 and a part of the left and right edges of the protective cloth 48 (portions 48a, 48b, and 48c) are sewn to the vicinity of the stitched parts 33L and 33R, respectively. The airbag 15 can be manufactured by wearing and reversing it using the gas inlet 19 so that the seam allowance of the edge portion is not exposed to the outside. In addition, when the work of reversing using the gas inlet 19 is difficult, the work of sewing the edges 52a and 52a of the extended parts 52 and 52 of the flow straightening cloth material 50 is performed on the airbag body 16. After the reversal, the extending portions 52 and 52 may be pulled out from the gas inlet 19 and performed.

そして、実施形態のエアバッグ15では、内側パネル部36を構成する第2基布43L・43Rが略同一形状の左右一対とされるとともに、第2基布43L・43Rが、外側縁部43dを、それぞれ、外側パネル部35を構成する第1基布38の左側・右側部位40・41の周縁部40a・41aに沿わせるように、周縁部40a・41aにおける元部側縁部40b・41bを除いた部位の形状と略同一として、形成されている。そのため、エアバッグ15の縫合作業時に、基布38・43L・43R相互を重ねるように配置させれば、縫着させる縁部相互の位置を一致させることができて、縫合作業が容易となる。   In the airbag 15 of the embodiment, the second base fabrics 43L and 43R constituting the inner panel portion 36 are a pair of left and right having substantially the same shape, and the second base fabrics 43L and 43R have the outer edge portion 43d. The base side edge portions 40b and 41b of the peripheral edge portions 40a and 41a are arranged so as to be along the peripheral edge portions 40a and 41a of the left and right side portions 40 and 41 of the first base fabric 38 constituting the outer panel portion 35, respectively. It is formed as substantially the same as the shape of the removed part. Therefore, if the base fabrics 38, 43L, and 43R are arranged so as to overlap each other when the airbag 15 is stitched, the positions of the edges to be sewn can be matched, and the stitching work becomes easy.

上記のようにして製造したエアバッグ15の車両への搭載を説明すると、まず、各取付孔20からボルト11aを突出させるように、内部にリテーナ11を配設させた状態で、エアバッグ15を折り畳む。具体的には、エアバッグ15は、予備折り工程を経た後、横折り工程と縦折り工程とを経て、折り畳む。   The mounting of the airbag 15 manufactured as described above on the vehicle will be described. First, the airbag 15 is placed in a state where the retainer 11 is disposed so that the bolt 11a protrudes from each mounting hole 20. Fold it up. Specifically, the airbag 15 is folded through a preliminary folding process, and then a horizontal folding process and a vertical folding process.

予備折り工程では、図7〜10に示すような予備折りエアバッグ58を形成することとなる。予備折りエアバッグ58は、各肩拘束部26L・26Rの後部側における上端側の部位を構成する各第2基布43L・43Rの上側部位43e・43eを、間に配設される縫合部位34を中心として左右両側に開いて平らに展開させた形状とされるとともに、この縫合部位34を、前後方向に沿って配設させた形状とされている。具体的には、予備折りエアバッグ58は、図7・8に示すごとく、第2基布43L・43Rの上側部位43e・43eを平らに展開した展開部位59を、上端近傍における左右方向の中央付近の部位59aをガス流入口19と対向して配設させるように、外側パネル部34を、複数の前後方向に沿った谷折りの折目CL1・CL2・CR1・CR2を付けるように折り畳んで、形成されることとなる。また、予備折りエアバッグ58の下端58b近傍部位は、それぞれ、略左右方向に沿うようにして、左右に並設される折目CH・CHを付けて、内部側に折り込まれるようにして、折り畳まれている。予備折りエアバッグ58は、ガス流入口19を中心として略左右対称形状とされている。この予備折りは、エアバッグ本体16の上側壁部16aにおける左右方向の中央付近の前端近傍部位16aaと、下側壁部16bにおける前後・左右方向の中央付近の部位16ba(図2参照)と、を把持して、折目CL1・CL2・CR1・CR2を付けつつ把持箇所の部位16aa・16baを相互に離すように、前後方向に引っ張り、そして、各第2基布43L・43Rの上側部位43e・43eを左右両側に開いて平らに展開することにより、行なえる。この把持箇所16aa・16baは、予備折りエアバッグ58の前後両端58a・58bを構成することとなる。   In the preliminary folding step, a preliminary folded airbag 58 as shown in FIGS. 7 to 10 is formed. The pre-folded airbag 58 includes the sutured portion 34 disposed between the upper portions 43e and 43e of the second base fabrics 43L and 43R that constitute the upper end side portions of the rear portions of the shoulder restraining portions 26L and 26R. And a shape in which the stitched portion 34 is disposed along the front-rear direction. Specifically, as shown in FIGS. 7 and 8, the pre-folded airbag 58 has a deployment portion 59 obtained by flatly deploying the upper portions 43e and 43e of the second base fabrics 43L and 43R, and a horizontal center in the vicinity of the upper end. The outer panel 34 is folded so as to have a plurality of valley folds CL1, CL2, CR1, and CR2 along the front-rear direction so that the nearby portion 59a is disposed to face the gas inlet 19. Will be formed. Further, the portions near the lower end 58b of the pre-folded airbag 58 are folded so as to be folded inwardly with folds CH and CH arranged side by side so as to be substantially along the left-right direction. It is. The pre-folded airbag 58 has a substantially bilaterally symmetric shape with the gas inlet 19 as the center. The preliminary folding includes a front end vicinity portion 16aa near the center in the left-right direction on the upper wall portion 16a of the airbag body 16, and a portion 16ba (see FIG. 2) near the center in the front-rear / left-right direction on the lower wall portion 16b. Gripping and pulling in the front-rear direction so as to separate the gripping parts 16aa and 16ba from each other while attaching the creases CL1, CL2, CR1 and CR2, and the upper parts 43e and 43e of the second base fabrics 43L and 43R This can be done by opening 43e on both the left and right sides and spreading it flat. The gripping portions 16aa and 16ba constitute front and rear ends 58a and 58b of the preliminary folding airbag 58.

そして、このように予備折りした後には、図11に示すように、予備折りエアバッグ58におけるガス流入口19の後方側部位61と前方側部位62とについて、左右方向に沿う折目を付けて、端部61a・62aをガス流入口19に接近させるように、横折りを行なう。実施形態の場合、後方側部位61は、図11に示すごとく、後端61aを下側壁部16b側に巻いて、ガス流入口19の上に載せるように、ロール折りして折り畳まれている。そして、前方側部位62は、図11のC・12のA・Bに示すごとく、前端62aを後側壁部16e側に巻きつつ、後方側部位61を折り畳んだロール折り部位63の上に載せるようにロール折りして、折り畳まれている。   Then, after the preliminary folding in this way, as shown in FIG. 11, the rear side portion 61 and the front side portion 62 of the gas inlet 19 in the preliminary folding airbag 58 are folded along the left-right direction. Then, lateral folding is performed so that the end portions 61 a and 62 a are close to the gas inlet 19. In the case of the embodiment, as shown in FIG. 11, the rear portion 61 is folded and folded so that the rear end 61 a is wound around the lower side wall portion 16 b and placed on the gas inlet 19. The front side portion 62 is placed on a roll folding portion 63 in which the rear side portion 61 is folded while the front end 62a is wound around the rear side wall portion 16e as shown in C and 12 A and B of FIG. Folded into rolls and folded.

横折りを行なった後には、横折り工程後のエアバッグ64におけるガス流入口19の左方側部位65と右方側部位66とについて、図12のB・Cに示すように、前後方向に沿う折目を付けて、端部65a・66aをガス流入口19に接近させるように、縦折りを行なう。実施形態の場合、左方側・右方側部位65・66は、端部65a・66aをガス流入口19に接近させてガス流入口19上に載せるように、蛇腹折りして、折り畳まれている。   After the lateral folding, the left side portion 65 and the right side portion 66 of the gas inlet 19 in the airbag 64 after the lateral folding step are arranged in the front-rear direction as shown in FIGS. A longitudinal fold is performed so that the ends 65 a and 66 a are brought close to the gas inlet 19 with a fold along the line. In the case of the embodiment, the left and right side portions 65 and 66 are folded and folded in a bellows so that the end portions 65a and 66a are close to the gas inlet 19 and are placed on the gas inlet 19. Yes.

縦折り工程を経てエアバッグ15の折り畳みが完了したならば、折り畳んだエアバッグ15の周囲を、折り崩れしないように、破断可能なラッピングシート14(図1参照)によりくるんでおく。そして、各ボルト11aをケース底壁部6aに挿通させつつ、折り畳んだエアバッグ15を、ケース6の底壁部6aに載置させる。次いで、インフレーター8の本体部8aを、底壁部6aの下方から、ケース6内に挿入させるとともに、底壁部6aから下方に突出している各ボルト11aを、インフレーター8のフランジ部8cに挿通させる。その後、インフレーター8のフランジ部8cから突出した各ボルト11aにナット12を締結させれば、ケース6の底壁部6aに対して、折り畳んだエアバッグ15とインフレーター8とを取り付けることができる。   When the folding of the airbag 15 is completed through the longitudinal folding process, the periphery of the folded airbag 15 is wrapped with a breakable wrapping sheet 14 (see FIG. 1) so as not to collapse. Then, the folded airbag 15 is placed on the bottom wall portion 6 a of the case 6 while the bolts 11 a are inserted through the case bottom wall portion 6 a. Next, the main body 8a of the inflator 8 is inserted into the case 6 from below the bottom wall 6a, and the bolts 11a protruding downward from the bottom wall 6a are inserted through the flange 8c of the inflator 8. . Thereafter, when the nut 12 is fastened to each bolt 11 a protruding from the flange portion 8 c of the inflator 8, the folded airbag 15 and the inflator 8 can be attached to the bottom wall portion 6 a of the case 6.

そして、車両に搭載されたインパネ1におけるエアバッグカバー10の連結壁部10cに、ケース6の図示しない所定のブラケットを、ボディ側の部位に固定させれば、助手席用エアバッグ装置Mを車両に搭載することができる。   If a predetermined bracket (not shown) of the case 6 is fixed to the body side portion of the connecting wall portion 10c of the airbag cover 10 in the instrument panel 1 mounted on the vehicle, the passenger seat airbag device M is mounted on the vehicle. Can be mounted on.

エアバッグ装置Mの車両への搭載後、車両の前面衝突時、インフレーター8の各ガス吐出口8bから膨張用ガスが吐出されれば、エアバッグ本体16が、膨張してラッピングシート14を破断するとともに、エアバッグカバー10の扉部10a・10bを図1の二点鎖線に示すように押して開かせることとなる。そして、エアバッグ本体16は、エアバッグカバー10の扉部10a・10bが開いて形成された開口から、上方へ突出するとともに、インパネ上面2とインパネ1の上方のウィンドシールド4との間を塞ぐように、車両の後方側へ展開膨張して、図1の二点鎖線、及び、図13〜15に示すごとく、膨張を完了させることとなる。   If the inflation gas is discharged from each gas discharge port 8b of the inflator 8 when the airbag device M is mounted on the vehicle and the vehicle collides with the front of the vehicle, the airbag body 16 expands and breaks the wrapping sheet 14. At the same time, the door portions 10a and 10b of the airbag cover 10 are pushed and opened as shown by the two-dot chain line in FIG. The airbag body 16 protrudes upward from the opening formed by opening the door portions 10a and 10b of the airbag cover 10 and closes the space between the instrument panel upper surface 2 and the windshield 4 above the instrument panel 1. Thus, it expand | deploys and expands to the back side of a vehicle, and as shown in the dashed-two dotted line of FIG. 1, and FIGS.

そして、実施形態の助手席用エアバッグ15では、乗員保護部25が、膨張完了時における上部側から後部側にかけての部位に、左右方向に略沿って並設されるとともに、それぞれ、上方側から後方側にかけて連続して突出するように配設される肩拘束部26L・26Rを備えた構成である。すなわち、実施形態のエアバッグ15では、乗員保護部25が、肩拘束部26L・26Rに挟まれた左右方向の中間部分を凹ませるように、膨張を完了させることとなる。そのため、膨張完了時のエアバッグ15に乗員MPが干渉した際に、後方に突出するように配設されている左右の肩拘束部26L・26Rが、まず、乗員MPの左右の肩部MS付近と干渉することとなり(図14・15参照)、乗員MPの前進移動する運動エネルギーが低減されることとなる。その後、両肩MSを肩拘束部26L・26Rにより拘束された乗員MPの頭部MHが、肩拘束部26L・26R間の凹んだ部位27に進入しつつ、前方側への移動を抑えるように、拘束されることとなる。そのため、実施形態のエアバッグ15では、肩拘束部26L・26Rによって運動エネルギーが低減された状態で、乗員MPの頭部MHを、エアバッグ15からの反力を抑えて、ソフトに受け止めることができる。   In the passenger seat airbag 15 according to the embodiment, the occupant protection unit 25 is provided in parallel along the left-right direction in a portion from the upper side to the rear side when the inflation is completed, and from the upper side, respectively. It is the structure provided with shoulder restraint part 26L * 26R arrange | positioned so that it may protrude continuously toward the back side. That is, in the airbag 15 of the embodiment, the occupant protection unit 25 completes the inflation so that the middle part in the left-right direction sandwiched between the shoulder restraining portions 26L and 26R is recessed. Therefore, when the occupant MP interferes with the airbag 15 at the completion of the inflation, the left and right shoulder restraint portions 26L and 26R that are arranged to protrude rearward are first near the left and right shoulder portions MS of the occupant MP. (See FIGS. 14 and 15), and the kinetic energy of the occupant MP moving forward is reduced. Thereafter, the head MH of the occupant MP, whose both shoulders MS are restrained by the shoulder restraining portions 26L, 26R, enters the recessed portion 27 between the shoulder restraining portions 26L, 26R, and suppresses forward movement. , Will be restrained. Therefore, in the airbag 15 of the embodiment, the head MH of the occupant MP can be softly received while suppressing the reaction force from the airbag 15 in a state where the kinetic energy is reduced by the shoulder restraining portions 26L and 26R. it can.

従って、実施形態の助手席用エアバッグ15では、膨張を完了させたエアバッグ15に乗員MPの頭部MHが干渉した際に、反力を抑えて、乗員MPの頭部MHを的確に保護することができる。   Therefore, in the passenger seat airbag 15 according to the embodiment, when the head MH of the occupant MP interferes with the airbag 15 that has been inflated, the reaction force is suppressed and the head MH of the occupant MP is accurately protected. can do.

また、実施形態のエアバッグ15では、膨張完了時のエアバッグ本体16において、各肩拘束部26L・26Rがそれぞれ上方側から後方側にかけて連続して突出するように配設されており、肩拘束部26L・26R間の凹んだ部位27も、乗員保護部25の上端側から、上下方向に略沿って連続して配設されることとなる。そのため、乗員MPの体格や着座姿勢により、膨張したエアバッグ本体16に干渉する乗員MPの頭部MHの位置が上下方向に移動しても、乗員MPの頭部MHを、エアバッグ15からの反力を抑えて、ソフトに受け止めることができる。   Further, in the airbag 15 of the embodiment, the shoulder restraining portions 26L and 26R are disposed so as to continuously protrude from the upper side to the rear side in the airbag body 16 when the inflation is completed. The recessed portion 27 between the portions 26L and 26R is also continuously arranged from the upper end side of the occupant protection portion 25 substantially along the vertical direction. Therefore, even if the position of the head MH of the occupant MP that interferes with the inflated airbag body 16 moves up and down due to the physique and seating posture of the occupant MP, the head MH of the occupant MP is removed from the airbag 15. Suppress the reaction force and accept it softly.

さらに、実施形態のエアバッグ15では、膨張完了時における左右方向の略中央となる位置に、内側パネル部36を構成する第2基布43L・43Rの内周側の縁部43a・43a相互を結合させた縫合部位34が、略前後方向に沿ったエアバッグ本体16の周方向の略全域に配設されることとなる。そして、実施形態のエアバッグ15では、この縫合部位34を構成する第2基布43L・43Rの内側縁部43aが、第2基布43L・43Rの外側縁部43dよりも長さ寸法を小さく設定されることから、この縫合部位34は、エアバッグ本体16の膨張完了時において、外側に突出せず、側方から見て、エアバッグ本体16を構成する外周縁(後側壁部16e)より内周側に位置することとなる(図4参照)。そのため、実施形態のエアバッグ15では、エアバッグ本体16を構成する基布全体が、第2基布43L・43Rの内側縁部43a・43a相互を縫着させて構成される縫合部位34に展開方向を規制されつつ、展開膨張するような態様となり、膨張完了時に乗員側となる後側壁部16eが乗員側に向かって大きく突出するように展開することを抑えることができて、エアバッグ本体16の膨張完了時の形状を規制することができる。その結果、エアバッグ本体16内に、後側壁部16eを乗員側と反対側の前方側へ引っ張るような膨張完了時の形状を規制するテザー等を配設させなくともよく、エアバッグ15を構成する部品点数を低減させることが可能となる。   Further, in the airbag 15 according to the embodiment, the inner peripheral edge portions 43a and 43a of the second base fabrics 43L and 43R constituting the inner panel portion 36 are arranged at a position substantially at the center in the left-right direction when the inflation is completed. The combined suture parts 34 are disposed in substantially the entire region in the circumferential direction of the airbag body 16 substantially along the front-rear direction. In the airbag 15 of the embodiment, the inner edge portion 43a of the second base cloth 43L / 43R constituting the stitched portion 34 is smaller in length than the outer edge portion 43d of the second base cloth 43L / 43R. Therefore, when the airbag body 16 is completely inflated, the stitched portion 34 does not protrude outward and is seen from the outer periphery (rear side wall portion 16e) constituting the airbag body 16 when viewed from the side. It will be located on the inner circumference side (see FIG. 4). Therefore, in the airbag 15 of the embodiment, the entire base fabric constituting the airbag main body 16 is deployed at the stitched portion 34 configured by sewing the inner edge portions 43a and 43a of the second base fabrics 43L and 43R. The air bag body 16 can be restrained from being deployed so that the rear side wall 16e on the occupant side protrudes greatly toward the occupant side when the inflation is completed. The shape at the time of completion of expansion can be regulated. As a result, the airbag 15 does not need to be provided with a tether or the like for regulating the shape at the time of completion of inflation, such as pulling the rear side wall portion 16e to the front side opposite to the occupant side. The number of parts to be reduced can be reduced.

また、実施形態のエアバッグ15では、エアバッグ本体16内に、ガス流入口19の上方側を覆うように配設されるとともに、ガス流入口19から流入した膨張用ガスGを前後両側へ整流可能に、前後方向の両端30A・30Bを開口させた略筒状の整流布29を、配設させている構成であることから、エアバッグ15の展開膨張時において、ガス流入口19から流入した膨張用ガスGを、整流布29の前後両端の開口30A・30Bから、前後方向に沿うようにして、エアバッグ本体16内に流入させることができる(図4・15参照)。すなわち、実施形態のエアバッグ15では、エアバッグ本体16内に、インパネ上面2に沿わせるようにして、膨張用ガスGを前後方向に沿って流入させることができることから、エアバッグ本体16の下部側、特に、エアバッグ本体16の後部の下部側をインパネ1に沿って展開させることができて、エアバッグ15が乗員MP側へ不必要に突出するように膨張することを抑えることができる。   Further, in the airbag 15 of the embodiment, the airbag 15 is disposed in the airbag body 16 so as to cover the upper side of the gas inlet 19 and rectifies the inflation gas G flowing in from the gas inlet 19 in the front and rear sides. Since it has a configuration in which a substantially cylindrical rectifying cloth 29 having both ends 30 </ b> A and 30 </ b> B opened in the front-rear direction is disposed, the air flows from the gas inlet 19 when the airbag 15 is deployed and inflated. The inflation gas G can be caused to flow into the airbag body 16 from the openings 30A and 30B at both front and rear ends of the rectifying cloth 29 along the front and rear direction (see FIGS. 4 and 15). That is, in the airbag 15 of the embodiment, the inflation gas G can flow along the instrument panel upper surface 2 into the airbag body 16 along the front-rear direction. The side, in particular, the lower side of the rear portion of the airbag body 16 can be deployed along the instrument panel 1, and the airbag 15 can be prevented from inflating so as to protrude unnecessarily toward the occupant MP.

さらに、実施形態のエアバッグ15では、整流布29の左右対称的な位置に、整流布28の前後両端の開口30A・30Bの開口面積より小さく開口して、ガス流入口19から流入した膨張用ガスを逃がし可能な貫通孔31・31を配設させていることから、エアバッグ15の展開膨張時において、この貫通孔31・31から少量の膨張用ガスを逃がすことができて、整流布29の前後の開口30A・30Aの方向を安定させることができ、膨張用ガスの流出方向を、一層、安定させることができる。その結果、左右の後方側へ突出する肩拘束部26L・26Rに、的確に、略均等に膨張用ガスを流出させることも可能となることから、エアバッグ15を、一層、安定して、左右均等に展開膨張させることができる。なお、実施形態のエアバッグ15では、整流布29において、ガス流入口19を中心として左右対称となる2箇所に、貫通孔31・31が配設されている構成であるが、この貫通孔は、左右対称的な位置であれば、1箇所に配設させる構成としてもよく、例えば、整流布の左右方向の中央付近となる位置の1箇所に配設させてもよい。勿論、貫通孔の開口面積の総和が、整流布の前後両端の開口の開口面積より小さく、この開口からの膨張用ガスの流出を阻害しない程度に設定されるのであれば、左右対称的な位置に、3箇所以上貫通孔を配設させた構成の整流布を使用してもよい。   Further, in the airbag 15 according to the embodiment, the airflow is expanded from the gas inflow port 19 by opening at a symmetrical position of the flow rectifying cloth 29 smaller than the opening areas of the openings 30A and 30B at both front and rear ends of the flow rectifying cloth 28. Since the through holes 31 and 31 through which gas can be released are disposed, a small amount of inflation gas can be released from the through holes 31 and 31 when the airbag 15 is deployed and inflated, and the flow regulating cloth 29 The direction of the front and rear openings 30A and 30A can be stabilized, and the outflow direction of the expansion gas can be further stabilized. As a result, it is possible to allow the inflation gas to flow out to the shoulder restraining portions 26L and 26R projecting to the left and right rear sides accurately and substantially evenly. It can be expanded and expanded evenly. In the airbag 15 of the embodiment, the through-holes 31 and 31 are arranged at two positions that are symmetric with respect to the gas inlet 19 in the rectifying cloth 29. If it is a left-right symmetric position, it may be arranged at one place, for example, it may be arranged at one position near the center of the rectifying cloth in the left-right direction. Of course, if the sum total of the opening areas of the through holes is smaller than the opening areas of the openings at the front and rear ends of the rectifying cloth and is set to such an extent that the outflow of the inflation gas from this opening is not hindered, the symmetrical position Moreover, you may use the rectification | straightening cloth of the structure which has arrange | positioned three or more through-holes.

さらにまた、実施形態のエアバッグ15では、肩拘束部26L・26R間に配設される凹部27を、肩拘束部26L・26Rの内側壁部26cを構成する第2基布43L・43Rの内側縁部43aを縫合した縫合部位34により、構成している。そのため、この縫合部位34の長さ寸法(各第2基布43L・43Rにおける内側縁部43aの長さ寸法、換言すれば、内側縁部43aの略内径寸法ともいえる)を変更することにより、左右の肩拘束部26L・26Rの間の凹部27の形状を深く、あるいは、浅くすることができ、同時に、左右の肩拘束部26L・26Rを連通させる連通孔22の開口面積も変更することができる。すなわち、実施形態のエアバッグ15では、エアバッグ本体16の外形形状を変更しなくとも、左右の肩拘束部26L・26Rの間の凹部27の形状を、容易に変更することができる。   Furthermore, in the airbag 15 of the embodiment, the concave portion 27 disposed between the shoulder restraining portions 26L and 26R is provided inside the second base fabrics 43L and 43R constituting the inner wall portion 26c of the shoulder restraining portions 26L and 26R. The edge portion 43a is constituted by a stitched portion 34 stitched. Therefore, by changing the length dimension of the stitched portion 34 (the length dimension of the inner edge 43a in each of the second base fabrics 43L and 43R, in other words, the inner diameter of the inner edge 43a), The shape of the recess 27 between the left and right shoulder restraint portions 26L and 26R can be made deeper or shallower, and at the same time, the opening area of the communication hole 22 for communicating the left and right shoulder restraint portions 26L and 26R can be changed. it can. That is, in the airbag 15 of the embodiment, the shape of the concave portion 27 between the left and right shoulder restraint portions 26L and 26R can be easily changed without changing the outer shape of the airbag body 16.

なお、実施形態のエアバッグ15では、外側パネル部35を、左側壁部16cを構成する左側部位40と、右側壁部16dを構成する右側部位41と、を左右方向で連結させた1枚の第1基布38から構成しているが、外側パネル部の形状はこれに限られるものではなく、例えば、外側パネル部を、左側部位と右側部位とをそれぞれ分離させた二枚の基布から、構成してもよい。また、実施形態のエアバッグ15では、縫合糸を用いて縫着させることにより、基布38・43L・43Rの周縁相互を結合させてエアバッグ本体16を形成しているが、基布の周縁相互の結合手段はこれに限られるものではなく、例えば、基布の周縁相互を、接着剤等を使用して接合させる構成としてもよい。   In the airbag 15 of the embodiment, the outer panel portion 35 is a single piece in which the left side portion 40 constituting the left side wall portion 16c and the right side portion 41 constituting the right side wall portion 16d are connected in the left-right direction. Although it comprises the 1st base fabric 38, the shape of an outside panel part is not restricted to this, For example, an outside panel part is separated from two base fabrics which made a left side part and a right side part separate, respectively. May be configured. Further, in the airbag 15 of the embodiment, the airbag body 16 is formed by joining the peripheral edges of the base fabrics 38, 43L, and 43R by sewing with a suture thread. The mutual coupling means is not limited to this. For example, the peripheral edges of the base fabric may be joined using an adhesive or the like.

本発明の一実施形態である助手席用エアバッグを使用した助手席用エアバッグ装置の車両前後方向の断面図である。It is sectional drawing of the vehicle front-back direction of the airbag apparatus for passenger seats using the airbag for passenger seats which is one Embodiment of this invention. 実施形態のエアバッグを単体で膨張させた状態の前方側から見た斜視図である。It is the perspective view seen from the front side of the state where the airbag of the embodiment was inflated alone. 実施形態のエアバッグを単体で膨張させた状態の後方側から見た斜視図である。It is the perspective view seen from the back side of the state where the airbag of an embodiment was inflated alone. 実施形態のエアバッグを単体で膨張させた状態の前後方向に沿った断面図である。It is sectional drawing along the front-back direction of the state which expanded the airbag of embodiment alone. 実施形態のエアバッグを単体で膨張させた状態の断面図であり、図4のV−V部位に対応する。It is sectional drawing of the state which expanded the airbag of embodiment alone, and respond | corresponds to the VV site | part of FIG. 実施形態のエアバッグを構成する部材を示す平面図である。It is a top view which shows the member which comprises the airbag of embodiment. 実施形態のエアバッグを予備折りした後を示すもので、ガス流入口側から見た図である。FIG. 2 is a diagram showing the air bag according to the embodiment after being pre-folded, as viewed from the gas inlet side. 実施形態のエアバッグを予備折りした後を示すもので、乗員保護部側から見た図である。FIG. 2 is a view of the airbag according to the embodiment after being pre-folded and viewed from the passenger protection unit side. 図7のIX−IX部位の端面図である。It is an end view of the IX-IX part of FIG. 図7のX−X部位の端面図である。It is an end view of the XX site | part of FIG. 実施形態のエアバッグの予備折り後の折り畳み工程を示す図である。It is a figure which shows the folding process after the preliminary folding of the airbag of embodiment. 実施形態のエアバッグの折り畳み工程を示す図であり、図11の後の工程を示す。It is a figure which shows the folding process of the airbag of embodiment, and shows the process after FIG. 実施形態のエアバッグの使用状態を説明する図であり、膨張が完了した状態を示す車両後方側から見た図である。It is a figure explaining the use condition of the airbag of an embodiment, and it is the figure seen from the vehicles back side which shows the state where inflation was completed. 実施形態のエアバッグの使用状態を説明する図であり、膨張が完了した状態を示す車両の上方から見た概略図である。It is a figure explaining the use condition of the airbag of an embodiment, and is the schematic seen from the upper part of the vehicles in the state where inflation was completed. 実施形態のエアバッグの使用状態を説明する図であり、膨張が完了した状態を示す車両の側方から見た概略図である。It is a figure explaining the use state of the air bag of an embodiment, and is the schematic seen from the side of the vehicles in the state where inflation was completed.

符号の説明Explanation of symbols

1…インストルメントパネル(インパネ)、
4…ウィンドシールド、
15…エアバッグ、
16…エアバッグ本体、
17…車体側部、
19…ガス流入口、
25…乗員保護部、
26…肩拘束部、
27…凹部、
29…整流布、
30A・30B…開口、
31…貫通孔、
33…縫合部位、
35…外側パネル部、
36…内側パネル部、
38…第1基布、
40…左側部位、
40a…周縁部、
41…右側部位、
41a…周縁部、
43…第2基布(内側パネル部用基布)、
43a…内側縁部、
43b…外側縁部、
MP…乗員、
MH…頭部、
MS…肩部、
M…助手席用エアバッグ装置。
1 ... Instrument panel (instrument panel),
4 ... Windshield,
15 ... Airbag,
16 ... airbag body,
17 ... side of vehicle body,
19 ... gas inlet,
25 ... Occupant protection department,
26 ... shoulder restraint,
27 ... recess,
29 ... Rectifier cloth,
30A, 30B ... opening,
31 ... through hole,
33 ... suture site,
35 ... outer panel,
36 ... inner panel,
38 ... first base fabric,
40 ... Left side part,
40a ... peripheral edge,
41 ... right side part,
41a ... peripheral edge,
43 ... 2nd base fabric (base fabric for inside panel part),
43a ... inner edge,
43b ... outer edge,
MP ... Crew,
MH ... head,
MS ... shoulder,
M ... Airbag device for passenger seat.

Claims (3)

車両の助手席前方におけるインストルメントパネルの上面側に折り畳まれて収納され、膨張用ガスの流入時に、上方へ突出するとともに、前記インストルメントパネル上面と前記インストルメントパネル上方のウィンドシールドとの間を塞ぐように、車両の後方側へ展開膨張する構成とされて、
膨張完了時の前端付近となる位置に、膨張用ガスを流入させるガス流入口を備えるとともに、膨張完了時における後部側となる位置に、助手席に着座した乗員と干渉可能とされる乗員保護部を備える構成とされるとともに、
膨張完了時の形状を、頂部を前端側に配設させた略四角錐形状とされて、左右両側で略前後方向に沿って配設される左側壁部及び右側壁部と、上下両側で略左右方向に沿って配設される上側壁部及び下側壁部と、乗員側で前記上側壁部と下側壁部とを連結するように略左右方向に沿って配設される後側壁部と、を備える構成の助手席用エアバッグにおいて、
前記エアバッグが、複数の基布の周縁相互を結合させて構成されるとともに、
前記左側壁部及び前記右側壁部を構成する外側パネル部と、
前記上側壁部、前記下側壁部、及び、前記後側壁部、を構成する内側パネル部と、
から、構成され、
前記内側パネル部が、膨張完了時における前記内側パネル部の領域を左右方向に沿って2分割するように構成されるとともに、略同一形状とされる左右一対の内側パネル部用基布から、構成され、
該各内側パネル部用基布が、略C字形状に湾曲した帯状とされて、外周側の縁部を、それぞれ、前記外側パネル部における左側・右側壁部を構成する部位の外周縁に沿わせる形状とされるとともに、
外周側の縁部を、前記外側パネル部における左側・右側壁部を構成する部位の外周縁に結合させ、内周側の縁部を相互に結合させることにより、前記内側パネル部を形成する構成とし、
前記乗員保護部が、膨張完了時における上部側から後部側にかけての部位に、左右方向に略沿って並設されるとともに、それぞれ上方側から後方側にかけて連続して突出するように配設される肩拘束部を備える構成とされていることを特徴とする助手席用エアバッグ。
Folded to the upper side of the instrument panel in front of the passenger seat of the vehicle and protrudes upward when the inflation gas flows in, and between the upper surface of the instrument panel and the windshield above the instrument panel It is configured to expand and expand to the rear side of the vehicle so as to close it,
An occupant protection part that is provided with a gas inflow port for allowing the inflation gas to flow in at a position near the front end when inflation is completed, and that can interfere with an occupant seated in the passenger seat at a position on the rear side when inflation is completed And a configuration comprising
The shape at the time of completion of expansion is a substantially square pyramid shape with the top portion disposed on the front end side, and the left and right wall portions disposed substantially along the front-rear direction on both the left and right sides, and substantially on both the upper and lower sides. An upper side wall portion and a lower side wall portion arranged along the left-right direction, and a rear side wall portion arranged substantially along the left-right direction so as to connect the upper side wall portion and the lower side wall portion on the passenger side, In a passenger seat airbag having a configuration comprising:
The airbag is configured by combining peripheral edges of a plurality of base fabrics,
An outer panel part constituting the left wall part and the right wall part;
An inner panel portion constituting the upper side wall portion, the lower side wall portion, and the rear side wall portion;
Composed of
The inner panel portion is configured to divide the region of the inner panel portion at the completion of the expansion into two along the left-right direction, and includes a pair of left and right inner panel portion base fabrics having substantially the same shape. And
Each of the inner panel base fabrics is formed in a belt shape that is curved in a substantially C-shape, and the outer peripheral edge portion is along the outer peripheral edge of the portion constituting the left and right side wall portions of the outer panel portion, respectively. And the shape
A configuration in which the outer peripheral edge is coupled to the outer peripheral edge of the portion constituting the left and right side wall portions of the outer panel portion, and the inner peripheral edge portions are coupled to each other to form the inner panel portion. age,
The occupant protection portions are arranged substantially along the left-right direction at portions from the upper side to the rear side at the time of completion of inflation, and are arranged so as to continuously protrude from the upper side to the rear side, respectively. An airbag for a passenger seat, characterized by comprising a shoulder restraining portion.
前記エアバッグ内に、前記ガス流入口の上方側を覆うように配設されるとともに、前記ガス流入口から流入した膨張用ガスを前後両側に整流可能に、前後方向の両端を開口させた略筒状の整流布が、配設され、
該整流布が、前記エアバッグの展開膨張時に、前記エアバッグ内において、前後両端の開口の少なくとも上部側を、前記インストルメントパネル上面よりも上方に突出させるように、配設されていることを特徴とする請求項1に記載の助手席用エアバッグ。
In the airbag, it is disposed so as to cover the upper side of the gas inlet, and the expansion gas flowing in from the gas inlet can be rectified to both the front and rear sides. A cylindrical rectifying cloth is disposed,
The rectifying cloth is disposed so that at least the upper sides of the openings at the front and rear ends protrude above the top surface of the instrument panel in the airbag when the airbag is deployed and inflated. The passenger seat airbag according to claim 1, wherein
前記整流布の左右対称的な位置に、前記整流布の前後両端の開口面積より小さく開口して、前記ガス流入口から流入した膨張用ガスを逃がし可能な貫通孔が形成されていることを特徴とする請求項2に記載の助手席用エアバッグ。   A through hole is formed in the symmetrical position of the flow rectifying cloth, which is smaller than the opening areas at the front and rear ends of the flow rectifying cloth, and allows the expansion gas flowing in from the gas inlet to escape. The airbag for a passenger seat according to claim 2.
JP2004369181A 2004-09-09 2004-12-21 Passenger airbag Expired - Fee Related JP4301160B2 (en)

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US8308187B2 (en) 2008-12-19 2012-11-13 Takata Corporation Airbag, airbag device, and vehicle
JP2010195280A (en) * 2009-02-26 2010-09-09 Honda Motor Co Ltd Airbag and airbag device
US8651523B2 (en) 2009-12-18 2014-02-18 Takata Corporation Airbag, airbag apparatus and vehicle
US8757656B2 (en) 2011-09-01 2014-06-24 Takata Corporation Airbag, airbag apparatus and vehicle
JP2013141886A (en) * 2012-01-10 2013-07-22 Toyota Motor Corp Airbag device for front passenger seat
US9290149B2 (en) 2013-06-28 2016-03-22 Toyoda Gosei Co., Ltd. Airbag apparatus for a front passenger seat
JP2018052285A (en) * 2016-09-28 2018-04-05 豊田合成株式会社 Air bag device for motorcycle

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