JP2006327360A

JP2006327360A - Airbag system for pedestrian

Info

Publication number: JP2006327360A
Application number: JP2005152276A
Authority: JP
Inventors: Yoshio Mizuno; 喜夫水野
Original assignee: Toyoda Gosei Co Ltd
Current assignee: Toyoda Gosei Co Ltd
Priority date: 2005-05-25
Filing date: 2005-05-25
Publication date: 2006-12-07

Abstract

PROBLEM TO BE SOLVED: To provide an airbag system for a pedestrian capable of developing and inflating an airbag so that a longitudinal inflation unit can rapidly and correctly cover a front face side of a front pillar in the initial condition of the development and inflation. SOLUTION: The airbag system for the pedestrian has an airbag 34 comprising a transverse inflation unit 38 and longitudinal inflation units 42, 42 extending backwardly from parts in the vicinity of right and left ends of the transverse inflation unit 38. A gas inlet part 44 to be connected to an inflator is arranged in the transverse inflation unit 38. The transverse inflation part 38 is demarcated into two transverse cell parts 39, 40. A rectification cloth 48 communicated with the gas inlet part 44 is arranged in one transverse cell part 39. The two transverse cell parts 39, 40 are communicated with each other at a part in the vicinity of the rectification cloth 48. The rectification cloth 48 has gas outlet holes 48a, 48b capable of allowing inflation gas to flow out to three sides, i.e., the right and left sides of the transverse cell part 39 and the transverse cell 40 side. COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、膨張完了時に、カウルの上面側付近と、左右のフロントピラーの前面側と、を覆う構成のエアバッグを備えた歩行者用エアバッグ装置に関する。 The present invention relates to a pedestrian airbag apparatus including an airbag configured to cover the vicinity of the upper surface side of a cowl and the front side of left and right front pillars when inflation is completed.

従来、歩行者用エアバッグ装置では、エアバッグが、膨張完了形状として、カウルの上面側付近を覆う横膨張部と、横膨張部の左右両端近傍から後方側へ延びて左右のフロントピラーの前面側を覆う縦膨張部と、を具備し、上方から見て略Ｕ字形状とされるとともに、横膨張部の部位に、インフレーターと接続されるガス流入口部を配設させた構成であった。そして、従来の歩行者用エアバッグ装置では、横膨張部を、膨張完了時に必要以上に厚く膨張することを抑えて、カウルの上面側を前後に広く覆うことができるように、前後に沿って並設される２つの横セル部から、構成していた（例えば、特許文献１参照）。
特開２００４−２９９４４２公報 Conventionally, in a pedestrian airbag device, the airbag has an inflated shape, a lateral inflating portion that covers the vicinity of the upper surface of the cowl, and a front surface of the left and right front pillars that extends from the left and right ends of the lateral inflating portion to the rear side. And a vertically inflating portion that covers the side, and is substantially U-shaped when viewed from above, and a gas inflow port portion connected to the inflator is disposed in the portion of the lateral inflating portion. . And in the conventional pedestrian airbag device, the lateral inflating portion is restrained from being inflated more than necessary when the inflation is completed, so that the upper surface side of the cowl can be covered widely in the front-rear direction. It was comprised from two horizontal cell parts arranged in parallel (for example, refer patent document 1).
JP 2004-299442 A

しかし、従来の歩行者用エアバッグ装置では、インフレーターからの膨張用ガスを流入させるガス流入口部が、後側の横セル部側に配設されており、ガス流入口部から流入した膨張用ガスは、後側の横セル部から、縦膨張部を経て、前側の横セル部内に流入することとなっていた。そのため、従来の歩行者用エアバッグ装置では、一旦縦膨張部内に流入した膨張用ガスが、前側の横セル部に向かって逆流するような態様となり、エアバッグの展開膨張初期時に縦膨張部がフロントピラーの前面側で左右にばたつき易く、縦膨張部がフロントピラーの前面側を的確に覆うまでの時間を短くする点に、改善の余地があった。 However, in the conventional pedestrian airbag device, the gas inlet part into which the inflation gas from the inflator flows is disposed on the side of the lateral cell part on the rear side, and the inflation inlet that flows in from the gas inlet part The gas was supposed to flow from the rear lateral cell portion into the front lateral cell portion via the longitudinal expansion portion. Therefore, in the conventional pedestrian airbag device, the inflation gas that has once flowed into the longitudinal inflation portion flows backward toward the front lateral cell portion, and the longitudinal inflation portion is in the initial stage of inflation of the airbag. There was room for improvement in that the front pillar side fluttered easily on the left and right sides, and the time until the vertical expansion part accurately covered the front side of the front pillar was shortened.

本発明は、上述の課題を解決するものであり、展開膨張初期時において縦膨張部が、迅速かつ的確に、フロントピラーの前面側を覆えるように、エアバッグを展開膨張させることが可能な歩行者用エアバッグ装置を提供することを目的とする。 The present invention solves the above-described problems, and allows the airbag to be deployed and inflated so that the longitudinally inflated portion covers the front side of the front pillar quickly and accurately at the initial stage of deployment and inflation. It aims at providing the airbag apparatus for pedestrians.

本発明に係る歩行者用エアバッグ装置は、車両のフロントウィンドシールドの前方側の収納部位に折り畳まれて収納されて膨張用ガスの流入時に収納部位から突出して展開膨張する構成のエアバッグと、エアバッグに膨張用ガスを供給するインフレーターと、を備える構成とされて、
エアバッグが、膨張完了形状として、カウルの上面側付近を覆う横膨張部と、横膨張部の左右両端近傍から後方側へ延びて左右のフロントピラーの前面側を覆う縦膨張部と、を具備し、上方から見て略Ｕ字形状とされるとともに、横膨張部の部位に、インフレーターと接続されるガス流入口部を配設させた構成の歩行者用エアバッグ装置であって、
横膨張部内に、ガス流入口部と連通されて、横膨張部内に流入する膨張用ガスの流入方向を制御する整流布が、配設され、
横膨張部が、膨張領域を前後方向で区画するように左右方向に略沿って連続的に配設される区画部を配設させて、前後で並設される２つの横セル部に、区画されて構成されるとともに、一方の横セル部内に、整流布を配設させた構成とされ、
２つの横セル部が、整流布近傍となる部位で、相互に連通可能な構成とされ、
整流布が、一方の横セル部の左右両側と、他方の横セル部側と、の３方に膨張用ガスを流出可能なガス流出孔を、備える構成とされていることを特徴とする。 A pedestrian airbag device according to the present invention is an airbag configured to be folded and stored in a storage part on the front side of a front windshield of a vehicle and to be expanded and inflated by projecting from the storage part when inflating gas flows. An inflator that supplies inflation gas to the airbag, and
The airbag has, as an inflation completed shape, a lateral inflating portion that covers the vicinity of the upper surface side of the cowl, and a longitudinal inflating portion that extends from the vicinity of both left and right ends of the lateral inflating portion to the rear side and covers the front side of the left and right front pillars. The airbag device for a pedestrian having a configuration in which a gas inflow port portion connected to an inflator is disposed in a portion of the lateral inflating portion while being substantially U-shaped when viewed from above,
In the lateral expansion portion, a rectifying cloth that is connected to the gas inlet portion and controls the inflow direction of the expansion gas flowing into the lateral expansion portion is disposed,
The horizontal inflating portion is provided with a partition portion that is continuously disposed substantially along the left-right direction so as to partition the expansion region in the front-rear direction, and is divided into two horizontal cell portions arranged in parallel in the front-rear direction. And is configured to have a rectifying cloth disposed in one horizontal cell portion,
The two horizontal cell portions are configured to be able to communicate with each other at a portion in the vicinity of the rectifying cloth,
The rectifying cloth is configured to include gas outflow holes through which the expansion gas can flow out in three directions, that is, the left and right sides of one side cell part and the other side cell part side.

本発明の歩行者用エアバッグ装置では、作動時、インフレーターから膨張用ガスが吐出されれば、膨張用ガスは、ガス流入口部から流入して、整流布により、一方の横セル部内において左右両側に向かって流入するとともに、他方の横セル部内にも流入して、２つの横セル部を膨張させて横膨張部を膨張させ、その後、縦膨張部内に流入して縦膨張部を膨張させることとなる。すなわち、本発明の歩行者用エアバッグ装置では、横膨張部全体が膨張を略完了させた後に、縦膨張部内に膨張用ガスが流入することとなることから、従来の歩行者用エアバッグ装置のごとく、縦膨張部内において膨張用ガスが逆流するような現象が起きず、縦膨張部を、左右へのばたつきを抑えて、迅速かつ的確に、フロントピラーの前面側を覆えるように、膨張させることができる。 In the pedestrian airbag device according to the present invention, when the inflation gas is discharged from the inflator during operation, the inflation gas flows in from the gas inlet and is left and right in one horizontal cell portion by the rectifying cloth. While flowing in toward both sides, it also flows into the other horizontal cell portion, expands the two horizontal cell portions to expand the horizontal expansion portion, and then flows into the vertical expansion portion to expand the vertical expansion portion. It will be. That is, in the pedestrian airbag device of the present invention, the inflation gas flows into the longitudinal inflation portion after the entire lateral inflation portion has substantially completed inflation. As described above, the phenomenon that the expansion gas flows backward in the vertical expansion portion does not occur, and the vertical expansion portion expands so as to cover the front side of the front pillar quickly and accurately while suppressing the flapping to the left and right. Can be made.

従って、本発明の歩行者用エアバッグ装置では、展開膨張初期時において縦膨張部が、迅速かつ的確に、フロントピラーの前面側を覆えるように、エアバッグを展開膨張させることができる。 Therefore, in the airbag device for pedestrians of the present invention, the airbag can be deployed and inflated so that the longitudinally inflated portion can cover the front side of the front pillar quickly and accurately at the initial stage of deployment and inflation.

また、本発明の歩行者用エアバッグ装置において、収納部位を、フードパネル自体の後縁近傍に配設させる場合、ガス流入口部を、横膨張部における前部側の横セル部側に、配設させる構成とすれば、前部側の横セル部自体でフードパネルの後縁近傍の上面側を覆うことができ、さらに、後部側に配設される横セル部により、フロントウィンドシールドの下部側部位の上面側を覆うことができることから、膨張を完了させた横膨張部により、カウルの上面側を前後に広く覆うことができて、好ましい。 Further, in the pedestrian airbag device of the present invention, when the storage part is disposed in the vicinity of the rear edge of the hood panel itself, the gas inlet portion is on the side of the lateral cell portion on the front side of the lateral expansion portion, With the arrangement, the front side horizontal cell part itself can cover the upper surface side near the rear edge of the hood panel, and the horizontal cell part arranged on the rear side further covers the front windshield. Since the upper surface side of the lower part side can be covered, the upper surface side of the cowl can be covered widely in the front and rear directions by the laterally expanded portion that has been expanded, which is preferable.

さらに、本発明の歩行者用エアバッグ装置において、収納部位を、カウルの部位に配設させる場合、ガス流入口部を、横膨張部における後部側の横セル部側に、配設させる構成とすれば、後部側の横セル部自体でカウルの部位の上面側を覆うことができ、さらに、前部側に配設される横セル部により、フードパネルの後縁の上面側を覆うことができることから、膨張を完了させた横膨張部により、カウルの上面側を前後に広く覆うことができて、好ましい。 Furthermore, in the pedestrian airbag device of the present invention, when the storage portion is disposed in the cowl portion, the gas inlet portion is disposed on the side of the lateral cell portion on the rear side of the lateral expansion portion. Then, the upper side of the cowl portion can be covered with the lateral cell portion on the rear side itself, and the upper side of the rear edge of the hood panel can be covered with the lateral cell portion disposed on the front side. Since it can do, the upper surface side of a cowl can be widely covered back and forth by the lateral expansion part which completed expansion, and it is preferred.

以下、本発明の一実施形態を図面に基づいて説明すると、本発明の第１実施形態である歩行者用エアバッグ装置Ｍ１は、図１〜３に示すように、車両Ｖのフードパネル８の後部８ａ側に搭載されて、エアバッグ３４、エアバッグ３４に膨張用ガスを供給するインフレーター２５、折り畳まれたエアバッグ３４とインフレーター２５とを収納するケース２１、及び、エアバッグ３４に押されて開くカバー１６、を備えて構成されている。 DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. A pedestrian airbag apparatus M1 according to a first embodiment of the present invention includes a hood panel 8 of a vehicle V as shown in FIGS. Mounted on the rear portion 8a side, the airbag 34, the inflator 25 for supplying the inflation gas to the airbag 34, the case 21 for storing the folded airbag 34 and the inflator 25, and the airbag 34 are pushed. An opening cover 16 is provided.

なお、本明細書では、前後と上下の方向は、それぞれ、車両Ｖの前後と上下と一致する方向を基準とし、左右の方向は、車両Ｖの前方側から後方側を見た際の左右の方向を基準とする。 In this specification, the front-rear and up-and-down directions are based on the direction corresponding to the front-rear and up-and-down of the vehicle V, respectively, and the left and right directions are the left and right directions when the rear side is viewed from the front side of the vehicle V. Based on direction.

また、車両Ｖには、図１に示すように、フロントバンパ５に、歩行者との衝突を検知若しくは予知可能なセンサ６が配設され、図示しないエアバッグ作動回路が、歩行者との衝突を検知した信号をセンサ６から入力させた際、インフレーター２５を作動させて、インフレーター２５から吐出される膨張用ガスによって、エアバッグ３４を展開膨張させるように、構成されている。 In addition, as shown in FIG. 1, the vehicle V is provided with a sensor 6 capable of detecting or predicting a collision with a pedestrian on the front bumper 5, and an airbag operation circuit (not shown) When the sensor 6 inputs a signal from the sensor 6, the inflator 25 is operated and the airbag 34 is deployed and inflated by the inflation gas discharged from the inflator 25.

さらに、フードパネル８は、図１〜３に示すように、曲げ塑性変形可能なアルミニウム（アルミニウム合金）等から形成される板金製として、上面側のアウタパネル１３と、下面側に位置してアウタパネル１３より強度を向上させたインナパネル９と、を備えて構成されている。このフードパネル８は、後縁８ｂの左右両縁付近において、図示しないヒンジ部を介して車両Ｖのボディ（車体）１側に連結支持されており、前開きタイプとしている。 Further, as shown in FIGS. 1 to 3, the hood panel 8 is made of sheet metal made of aluminum (aluminum alloy) capable of bending plastic deformation, and the outer panel 13 on the upper surface side and the outer panel 13 positioned on the lower surface side. And an inner panel 9 with improved strength. The hood panel 8 is connected and supported on the body (vehicle body) 1 side of the vehicle V via a hinge portion (not shown) in the vicinity of both left and right edges of the rear edge 8b, and is a front opening type.

アウタパネル１３には、略長方形形状に上下方向に貫通した配設孔１４が開口され、インナパネル９には、配設孔１４の開口に対応して、エアバッグ装置Ｍ１のケース２１を収納する箱形状の配設凹部１０が、形成されている。配設孔１４の周縁は、配設凹部１０の周縁とともに、下方に下がる段差１３ｂを設けて形成され、段差１３ｂにカバー１６の外周縁を嵌挿させた際に、カバー１６の上面１６ａがアウタパネル１３の上面１３ａと連なるように、構成されている。 The outer panel 13 is provided with an arrangement hole 14 that extends in a substantially rectangular shape in the vertical direction, and the inner panel 9 is a box that accommodates the case 21 of the airbag device M1 corresponding to the opening of the arrangement hole 14. An arrangement recess 10 having a shape is formed. The peripheral edge of the disposition hole 14 is formed by providing a step 13b that is lowered downward together with the peripheral edge of the disposition recess 10, and when the outer peripheral edge of the cover 16 is inserted into the step 13b, the upper surface 16a of the cover 16 is the outer panel. It is comprised so that it may connect with the 13 upper surface 13a.

配設凹部１０の底面は、取付座１１として構成され、取付座１１には、インフレーター２５やリテーナ３０から延びるボルト２７・３１を挿通させる図示しない複数の取付孔が、上下方向に貫通されている。 The bottom surface of the arrangement recess 10 is configured as a mounting seat 11, and a plurality of mounting holes (not shown) through which bolts 27 and 31 extending from the inflator 25 and the retainer 30 are inserted in the mounting seat 11. .

カバー１６は、板金製として、外周縁の下面に複数の係止脚１７を下方へ突設させるとともに、後縁の下面側に複数の可撓性を有した連結片１８を連結させた構成とされている。各係止脚１７は、ケース２１のフランジ部２２ａに設けられた係止孔２２ｂに挿入されて、フランジ部２２ａに係止されている。連結片１８は、下端側を、ケース２１の周壁部２２の後壁部２２ｃ側に、止めねじ１９によって、取り付けられている。このカバー１６は、膨張するエアバッグ３４に押された際に、エアバッグ３４の押圧力によって各係止脚１７を係止孔２２ｂから引き抜いて、ケース２１の開口２１ａを開けることとなる。その際、連結片１８が、ケース２１からのカバー１６の離脱を、防止することとなる。 The cover 16 is made of sheet metal and has a structure in which a plurality of locking legs 17 project downward from the lower surface of the outer peripheral edge and a plurality of flexible connecting pieces 18 are connected to the lower surface side of the rear edge. Has been. Each locking leg 17 is inserted into a locking hole 22b provided in the flange portion 22a of the case 21 and locked to the flange portion 22a. The connecting piece 18 is attached to the rear wall portion 22 c side of the peripheral wall portion 22 of the case 21 by a set screw 19 at the lower end side. When the cover 16 is pressed by the inflating airbag 34, each locking leg 17 is pulled out from the locking hole 22 b by the pressing force of the airbag 34 to open the opening 21 a of the case 21. At that time, the connecting piece 18 prevents the cover 16 from being detached from the case 21.

ケース２１は、図３・４に示すように、板金製として、略四角筒形状の周壁部２２と、周壁部２２の下方を塞ぐ底壁部２３と、を備えて構成され、周壁部２２の上端の開口２１ａが、カバー１６によって覆われるように、配設されている。周壁部２２の上端の開口２１ａは、インナパネル９の配設凹部１０やアウタパネル１３の配設孔１４と対応して、フードパネル８の後縁８ｂに沿うように、左右方向の中央部位を前方側へ突出させるように、湾曲した形状としている。 As shown in FIGS. 3 and 4, the case 21 is made of sheet metal and includes a peripheral wall portion 22 having a substantially rectangular tube shape and a bottom wall portion 23 that covers a lower portion of the peripheral wall portion 22. The upper end opening 21 a is disposed so as to be covered by the cover 16. The opening 21 a at the upper end of the peripheral wall portion 22 corresponds to the disposition recess 10 of the inner panel 9 and the disposition hole 14 of the outer panel 13, so that the center portion in the left-right direction extends forward along the rear edge 8 b of the hood panel 8. The shape is curved so as to protrude to the side.

周壁部２２の上端には、アウタパネル１３の配設孔１４の内周面に突き合わせるようなフランジ部２２ａが、外方へ突設され、フランジ部２２ａには、既述したように、係止脚１７を挿入係止させる複数の係止孔２２ｂが形成されている。また、周壁部２２の後部側の後壁部２２ｃには、既述したように、連結片１８の下端が、止めねじ１９によって固定されている。なお、実施形態の場合、係止孔２２ｂは、係止脚１７と対応して、フランジ部２２ａの前後で、左右の両端付近と左右方向の中央付近との５箇所ずつに、形成され、止めねじ１９の固定部位は、連結片１８の数に対応して、後壁部２２ｃの４箇所、としている。 At the upper end of the peripheral wall portion 22, a flange portion 22 a that abuts against the inner peripheral surface of the arrangement hole 14 of the outer panel 13 is projected outward, and the flange portion 22 a is locked as described above. A plurality of locking holes 22b for inserting and locking the legs 17 are formed. Further, as described above, the lower end of the connecting piece 18 is fixed to the rear wall portion 22 c on the rear side of the peripheral wall portion 22 by the set screw 19. Note that, in the case of the embodiment, the locking holes 22b are formed at five locations near the left and right ends and near the center in the left-right direction before and after the flange portion 22a corresponding to the locking legs 17, respectively. The fixing portions of the screw 19 are four places on the rear wall portion 22c corresponding to the number of the connecting pieces 18.

底壁部２３には、インフレーター２５やリテーナ３０のボルト２７・３１を挿通させる複数の取付孔２３ａ・２３ｂが、上下方向に貫通されている。なお、実施形態の場合、ボルト３１は、底壁部２３だけでなく、インナパネル９の取付座１１も貫通して、ナット３２止めされることとなる。 A plurality of mounting holes 23 a and 23 b through which the bolts 27 and 31 of the inflator 25 and the retainer 30 are inserted are penetrated in the bottom wall portion 23 in the vertical direction. In the case of the embodiment, the bolt 31 penetrates not only the bottom wall portion 23 but also the mounting seat 11 of the inner panel 9 and is fixed to the nut 32.

インフレーター２５は、図２〜４に示すように、シリンダタイプとして、２本使用され、それぞれ、ガス吐出口２６を配設させた先端２５ａ側を、左右の外方側に配置させて、底壁部２３の中央付近から左右に別れるように、配設されている。各インフレーター２５には、下方へ突出する複数の段差付きの取付ボルト２７が配設され、各取付ボルト２７を、ケース２１の底壁部２３の取付孔２３ａから突出させて、ナット２８止めすることにより、インフレーター２５が、ケース２１に、取り付けられることとなる。また、各インフレーター２５は、エアバッグ３４の流入口部４４における挿入口部４５の挿入口４５ａに挿入されて（図８参照）、挿入口部４５の外周面をクランプ７５によって締め付けることにより、エアバッグ３４における流入口部４４の挿入口部４５に、接続されることとなる。 As shown in FIGS. 2 to 4, two inflators 25 are used as cylinder types, each having a distal end 25 a side on which a gas discharge port 26 is disposed arranged on the left and right outer sides, and a bottom wall. It arrange | positions so that it may be divided into right and left from the center vicinity of the part 23. FIG. Each inflator 25 is provided with a plurality of stepped mounting bolts 27 protruding downward, and the mounting bolts 27 are protruded from the mounting holes 23 a of the bottom wall portion 23 of the case 21 and are fastened with nuts 28. As a result, the inflator 25 is attached to the case 21. Each inflator 25 is inserted into the insertion port 45a of the insertion port 45 in the inlet port 44 of the airbag 34 (see FIG. 8), and the outer peripheral surface of the insertion port 45 is tightened by a clamp 75, thereby The bag 34 is connected to the insertion port 45 of the inflow port 44.

エアバッグ３４は、図５〜１０に示すように、インフレーター２５から吐出される膨張用ガスＧを内部に流入させて展開膨張するもので、ポリエステル糸やポリアミド糸等を使用した織布から形成されている。エアバッグ３４は、膨張用ガスＧを内部に流入可能なガス流入部３６を備えたエアバッグ本体３５と、エアバッグ本体３５をケース２１に保持させるための複数の取付片部６６と、から構成されている。 As shown in FIGS. 5 to 10, the air bag 34 is inflated by inflating an inflating gas G discharged from the inflator 25, and is formed of a woven fabric using polyester yarn, polyamide yarn or the like. ing. The airbag 34 includes an airbag main body 35 having a gas inflow portion 36 through which the inflation gas G can flow and a plurality of attachment pieces 66 for holding the airbag main body 35 in the case 21. Has been.

エアバッグ本体３５のガス流入部３６は、膨張用ガスＧの流入時、折り畳まれた状態から膨張する膨張部３７を備えて構成され、膨張部３７には、膨張用ガスＧを流入させるためのガス流入口部としての流入口部４４が、連通するように配設されている。膨張部３７は、図１・２の二点鎖線に示すように、膨張完了時の形状を、正面から見て、左右方向に幅広とした略Ｕ字形状に形成されるもので、左右方向に沿って配設される横膨張部３８と、横膨張部３８の左右両端近傍からフロントピラー４・４の前面側を覆うように後方側に延びて、ピラーカバー部の役目を果たす縦膨張部４２・４２と、を備えて構成されている。 The gas inflow portion 36 of the airbag main body 35 includes an inflating portion 37 that inflates from a folded state when the inflating gas G flows in. The inflating portion 37 allows the inflating gas G to flow into the inflating portion 37. An inlet portion 44 as a gas inlet portion is disposed so as to communicate. As shown by the two-dot chain line in FIGS. 1 and 2, the inflating portion 37 is formed in a substantially U-shape that is wide in the left-right direction when viewed from the front. And a vertical expansion part 42 extending from the vicinity of the left and right ends of the horizontal expansion part 38 to the rear side so as to cover the front side of the front pillars 4 and 4 and serving as a pillar cover part. 42 is comprised.

横膨張部３８は、図１・２・１４・１５に示すように、エアバッグ３４の膨張完了時において、フードパネル８の後部８ａ付近の上面からフロントウィンドシールド３の下部３ａ付近までの領域を、左右方向の略全長にわたって覆うように、構成されている。そして、フードパネル８とフロントウィンドシールド３との間には、カウルパネル２ａと、カウルパネル２ａの上方に配設されるカウルルーバ２ｂと、から構成されるカウル２が、配設されている。そのため、エアバッグ３４の横膨張部３８は、カウルカバー部としての作用を果たし、膨張完了時に、フードパネル８の後部８ａから、カウル２の上方側を経て、フロントウィンドシールド３の下部３ａ上面側までを、略全面にわたって覆い可能な構成とされている。 As shown in FIGS. 1, 2, 14, and 15, the lateral inflating portion 38 has a region from the upper surface near the rear portion 8 a of the hood panel 8 to the vicinity of the lower portion 3 a of the front windshield 3 when the airbag 34 is completely inflated. It is configured so as to cover substantially the entire length in the left-right direction. A cowl 2 including a cowl panel 2a and a cowl louver 2b disposed above the cowl panel 2a is disposed between the hood panel 8 and the front windshield 3. Therefore, the lateral inflating portion 38 of the airbag 34 functions as a cowl cover portion, and when inflating is completed, from the rear portion 8a of the hood panel 8 through the upper side of the cowl 2, the upper surface side of the lower portion 3a of the front windshield 3 Is configured to cover almost the entire surface.

実施形態の場合、横膨張部３８は、膨張完了時における前後方向の中央付近に左右方向に略沿って配設される後述する区画部６３により、前後で並設される２つの横セル部３９・４０に、区画されている。区画部６３は、横膨張部３８の左右略全域にわたって、左右方向に略沿って配設されている。また、横膨張部３８は、流入口部４４近傍となる左右の中間部位の２箇所において、区画部６３を分断させて形成される連通部３８ｃ・３８ｃにより、前横セル部３９と後横セル部４０とを相互に連通させるように、構成されている。 In the case of the embodiment, the lateral expansion portion 38 includes two lateral cell portions 39 arranged in parallel in the front and rear directions by a partition portion 63 (described later) disposed substantially along the left-right direction in the vicinity of the center in the front-rear direction when the expansion is completed.・ It is divided into 40. The partition part 63 is disposed substantially along the left-right direction over substantially the entire left-right region of the lateral expansion part 38. In addition, the lateral expansion portion 38 includes a front lateral cell portion 39 and a rear lateral cell by means of communication portions 38c and 38c formed by dividing the partition portion 63 at two locations on the left and right intermediate portions in the vicinity of the inlet portion 44. The unit 40 is configured to communicate with each other.

流入口部４４は、実施形態の場合、前横セル部３９側に配設されており、図６．７・９に示すように、前横セル部３９の後端近傍（区画部６３近傍）の下面側となる左右両端付近に、それぞれ、配設されている。流入口部４４は、インフレーター２５の先端２５ａを挿入させる挿入口部４５と、挿入口部４５の挿入口４５ａから離れた端部から前横セル部３９側に略直交方向に屈曲する連通部４６と、を備えた略Ｌ字形状の筒形状として、構成されている。なお、左右の流入口部４４は、挿入口４５ａを相互に対向させるとともに、各挿入口部４５の軸方向を略左右方向に沿わせて、配設されている。 In the embodiment, the inflow port portion 44 is disposed on the front horizontal cell portion 39 side, and as shown in FIGS. 6.7 and 9, near the rear end of the front horizontal cell portion 39 (near the partition portion 63). Are disposed in the vicinity of both left and right ends of the lower surface side of each. The inflow port portion 44 includes an insertion port portion 45 into which the tip 25a of the inflator 25 is inserted, and a communication portion 46 that bends in a substantially orthogonal direction from the end portion of the insertion port portion 45 away from the insertion port 45a toward the front horizontal cell portion 39. Are formed as a substantially L-shaped cylindrical shape. In addition, the left and right inflow port portions 44 are disposed so that the insertion ports 45a face each other and the axial direction of each insertion port portion 45 is substantially along the left-right direction.

また、エアバッグ本体３５における前横セル部３９の各流入口部４４の内部側には、連通部４６に連通して、軸方向を略左右方向に沿わせた円筒状の整流布としての整流部４８が、配設されている。整流部４８は、左右両端側に配設されるガス流出孔４８ａ・４８ａと、左右方向の中央付近となる後部側に開口して配設されるガス流出孔４８ｂと、から、３方に、膨張用ガスＧを流出可能な構成とされている。具体的には、整流部４８は、ガス流出孔４８ａ・４８ａから、左右方向側に沿って前横セル部３９内に膨張用ガスＧＦを流出させ、ガス流出孔４８ｂから、連通部３８ｃを介して、後方側に向かって後横セル部４０内に膨張用ガスＧＢを流出させることとなる。 Further, on the inner side of each inflow port portion 44 of the front horizontal cell portion 39 in the airbag main body 35, rectification as a cylindrical rectifying cloth that communicates with the communication portion 46 and has the axial direction substantially in the left-right direction. A portion 48 is provided. The rectifying unit 48 includes gas outflow holes 48a and 48a disposed on both right and left ends, and a gas outflow hole 48b disposed on the rear side near the center in the left-right direction. The expansion gas G can flow out. Specifically, the rectifying unit 48 causes the expansion gas GF to flow out from the gas outflow holes 48a and 48a into the front horizontal cell unit 39 along the left-right direction, and from the gas outflow hole 48b through the communication unit 38c. Thus, the expansion gas GB flows out into the rear horizontal cell portion 40 toward the rear side.

なお、実施形態の場合、流入口部４４とそれに連なる整流部４８とは、エアバッグ本体３５の膨張部３７と別体として、一体的に形成されるガス導入筒部５７から、形成されている。ガス導入筒部５７は、実施形態の場合、図１２に示すように、平らに展開した筒部用布材５８を、挿入口部４５におけるエアバッグ本体３５の膨張部３７から離れる端部側を折目Ｆ０として、二つ折りし、挿入口部４５の挿入口４２ａと整流部４８のガス流出孔４８ａ・４８ａとを開口させた状態で、外周縁相互を縫合して、形成されている。さらに、実施形態の場合には、筒部用布材５８は、図１２に示すように、ポリエステル糸等を使用した織布から形成され、本体布５９と、本体布５９における流入口部４４の内周面から整流部４８の流入口部４４近傍側の部位の内周面にかけて配設される補強布６０と、の２枚から形成されている。本体布５９の所定位置には、整流部４８のガス流出孔４８ｂを構成する開口５９ａが、形成されている。 In the case of the embodiment, the inflow port portion 44 and the rectifying portion 48 connected thereto are formed from a gas introduction cylinder portion 57 that is integrally formed as a separate body from the inflating portion 37 of the airbag body 35. . In the case of the embodiment, as shown in FIG. 12, the gas introduction cylinder portion 57 has a flat-deployed cylinder portion fabric material 58 on the end side away from the inflating portion 37 of the airbag body 35 in the insertion port portion 45. The fold F0 is formed by folding in two and stitching the outer peripheral edges together with the insertion opening 42a of the insertion opening 45 and the gas outflow holes 48a and 48a of the rectifying section 48 opened. Furthermore, in the case of the embodiment, as shown in FIG. 12, the tubular portion fabric material 58 is formed from a woven fabric using polyester yarn or the like, and the main body fabric 59 and the inlet portion 44 of the main body fabric 59 are formed. The reinforcing cloth 60 is disposed from the inner peripheral surface to the inner peripheral surface of the portion near the inflow port portion 44 of the rectifying unit 48. At a predetermined position of the main body cloth 59, an opening 59a constituting the gas outflow hole 48b of the rectifying unit 48 is formed.

一方、エアバッグ本体３５のガス流入部３６（膨張部３７）は、図１１に示すように、ガス流入部３６の周壁３６ａを構成する２枚の基布５１・５２と、６枚の補強布５４・５５・５６と、から、形成されている。基布５１・５２は、ポリエステル糸等を使用した織布から形成されており、外形形状を略同一として、周縁相互を縫着されてガス流入部３６を構成している。基布５１は、エアバッグ本体３５の膨張完了時に、上面側に位置する上壁部５１を構成し、基布５２は、エアバッグ本体３５の膨張完了時に、下面側に位置して、車体側のカウル２やピラー４などの上面側に接するように配置される下壁部５２を構成することとなる。 On the other hand, as shown in FIG. 11, the gas inflow portion 36 (inflatable portion 37) of the airbag main body 35 includes two base cloths 51 and 52 constituting the peripheral wall 36a of the gas inflow portion 36 and six reinforcing cloths. 54, 55, and 56. The base fabrics 51 and 52 are formed of a woven fabric using polyester yarn or the like, and have the same outer shape, and the peripheral edges are sewn together to constitute the gas inflow portion 36. The base fabric 51 constitutes the upper wall portion 51 located on the upper surface side when the airbag body 35 is completely inflated, and the base fabric 52 is located on the lower surface side when the airbag body 35 is completely inflated. The lower wall portion 52 arranged so as to be in contact with the upper surface side of the cowl 2 and the pillar 4 is configured.

そして、下壁部５２には、各ガス導入筒部５７の流入口部４４をエアバッグ本体３５内から突出させるためのガス導入口５３が、形成されている。なお、各ガス導入口５３は、整流部４８の流入口部４４近傍の部位を、ガス導入口５３の周縁に縫合して、エアバッグ本体３５の膨張部３７と接続されている。 The lower wall 52 is formed with a gas inlet 53 for projecting the inlet 44 of each gas inlet cylinder 57 from the airbag body 35. Each gas inlet 53 is connected to the inflating portion 37 of the airbag main body 35 by stitching the vicinity of the inlet portion 44 of the rectifying portion 48 to the periphery of the gas inlet 53.

補強布５４・５５・５６は、基布５１・５２と同様に、ポリエステル糸を使用した織布から形成されるもので、それぞれ、左右対称となる２箇所ずつに、配設されている。補強布５４は、上壁部５１側に配設されるもので、区画部６３の後述する端部側部位６３ａを全域にわたって補強するように配設されるもので、左右方向に略沿った略長円状とされている。補強布５５は、上壁部５１側に配設されるもので、区画部６３の後述する中央側部位６３ｂの端部付近を補強するように配設されるもので、略円形とされている。補強布５６は、下壁部５２側に配設されるもので、区画部６３における端部側部位６３ａの全域と、中央側部位６３ｂの端部付近、さらに、ガス導入口５３の周縁、及び、取付片部６６Ａの下壁部５２への連結部位と、を、補強するように配設されるもので、略台形形状とされている。 The reinforcing fabrics 54, 55, and 56 are formed from woven fabrics using polyester yarn, similarly to the base fabrics 51 and 52, and are disposed at two symmetrical positions. The reinforcing cloth 54 is disposed on the upper wall portion 51 side, and is disposed so as to reinforce an end portion side portion 63a (described later) of the partition portion 63 over the entire region. It has an oval shape. The reinforcing cloth 55 is disposed on the upper wall portion 51 side, is disposed so as to reinforce the vicinity of an end portion of a center side portion 63b described later of the partition portion 63, and has a substantially circular shape. . The reinforcing cloth 56 is disposed on the lower wall portion 52 side. The entire area of the end portion side portion 63a in the partition portion 63, the vicinity of the end portion of the central side portion 63b, the periphery of the gas inlet port 53, and The connecting portion to the lower wall portion 52 of the mounting piece 66A is disposed so as to reinforce, and has a substantially trapezoidal shape.

横膨張部３８の領域内には、横膨張部３８を、前後２つの前・後横セル部３９・４０に区画する区画部６３が、前後方向の中央付近において、左右方向に略沿って配設されている。この区画部６３は、膨張完了時の横膨張部３８を、フードパネル８の後縁８ｂ側で、厚さ方向を上下方向に沿うように配置させた板状（長方形板状）に、膨張させるために、配設されている。また、実施形態の場合、区画部６３は、流入口部４４近傍となる部位を分断させて構成されている。そして、前・後横セル部３９・４０は、区画部６３の分断部位に形成される連通部３８ｃにより、相互に連通させるように、構成されている。区画部６３は、左右方向の中央側に配設される中央側部位６３ｂと、間に連通部３８ｃを形成するように中央側部位６３ｂの左右両側に配設される端部側部位６３ａ・６３ａと、から、構成されている。区画部６３は、実施形態の場合、上・下壁部５１・５２相互を縫合糸６３ｃにより縫合して、形成されている。なお、区画部６３は、左右の縦膨張部４０と横膨張部３８との境界部位付近まで延びるように、形成されている。 In the region of the lateral expansion portion 38, a partition portion 63 that divides the lateral expansion portion 38 into two front and rear lateral cell portions 39, 40 is disposed substantially along the left-right direction in the vicinity of the center in the front-rear direction. It is installed. The partition part 63 inflates the lateral expansion part 38 at the time of completion of expansion into a plate shape (rectangular plate shape) arranged on the rear edge 8b side of the hood panel 8 so that the thickness direction is along the vertical direction. Is provided for this purpose. Further, in the case of the embodiment, the partition part 63 is configured by dividing a part in the vicinity of the inflow port part 44. The front and rear horizontal cell portions 39 and 40 are configured to communicate with each other by a communication portion 38 c formed at a divided portion of the partition portion 63. The partition 63 has a central portion 63b disposed on the central side in the left-right direction and end side portions 63a and 63a disposed on the left and right sides of the central portion 63b so as to form a communication portion 38c therebetween. And is composed of. In the embodiment, the partition part 63 is formed by stitching the upper and lower wall parts 51 and 52 with a suture thread 63c. The partition 63 is formed so as to extend to the vicinity of the boundary portion between the left and right vertical expansion portions 40 and the horizontal expansion portion 38.

さらに、実施形態の場合、各縦膨張部４２・４２の部位にも、厚さを規制した板状としてフロントピラー４を覆えるように、厚さ規制部６４が形成されている。各厚さ規制部６４は、上・下壁部５１・５２に縫合した帯状の布材６４ａの先端相互を縫合して、形成されている。 Further, in the case of the embodiment, the thickness restricting portion 64 is also formed in the portion of each of the vertical expansion portions 42 and 42 so as to cover the front pillar 4 as a plate shape with a restricted thickness. Each thickness restricting portion 64 is formed by stitching the ends of a strip-shaped cloth material 64 a stitched to the upper and lower wall portions 51 and 52.

エアバッグ本体３５をケース２１に保持させるための取付片部６６は、図７に示すように、ポリエステル糸等を使用した織布から形成され、エアバッグ本体３５の横膨張部３８側に連結される基部６６ａと、ケース２１側に取り付けられる取付端部６６ｂと、を備えて構成され、実施形態の場合には、左右の流入口部４４付近の前後となる前・後横セル部３９・４０の部位と、前横セル部３９の前縁側における左右方向の中央付近の位置と、の５箇所に、配設されている。 As shown in FIG. 7, the attachment piece 66 for holding the airbag main body 35 on the case 21 is formed of a woven fabric using polyester yarn or the like, and is connected to the side of the lateral expansion portion 38 of the airbag main body 35. In the case of the embodiment, the front and rear horizontal cell portions 39 and 40 that are in the vicinity of the left and right inflow port portions 44 are provided. And the position in the vicinity of the center in the left-right direction on the front edge side of the front horizontal cell portion 39.

そして、各取付片部６６は、二つ折りした帯状として形成され、取付端部６６ｂを、断面Ｕ字形状のループ部６８として構成されるとともに、基部６６ａを、ループ部６８のケース２１への取付位置から二又状に延びて、エアバッグ本体３５の横膨張部３８側に連結される二つのベルト部６７・６７とするように、構成されている。各ベルト部６７は、先端を、横膨張部３８の下壁部４８に、縫合して、構成されている。 Each attachment piece 66 is formed as a band shape folded in half. The attachment end portion 66b is configured as a loop portion 68 having a U-shaped cross section, and the base portion 66a is attached to the case 21 of the loop portion 68. Two belt portions 67 and 67 that extend in a bifurcated manner from the position and are connected to the laterally inflating portion 38 side of the airbag body 35 are configured. Each belt portion 67 is configured by stitching the front end to the lower wall portion 48 of the lateral expansion portion 38.

また、実施形態の場合、各ループ部６８の先端は、ケース２１に固定される固定手段としてのリテーナ３０Ａ・３０Ｂにより、ケース２１の底壁部２３に取り付けられている。実施形態の場合、各流入口部４４の前後に配設される取付片部６６Ａ・６６Ａが、リテーナ３０Ａにより、ケース底壁部２３に取り付けられ、前横セル部３９の前縁側に配設される取付片部６６Ｂが、リテーナ３０Ｂにより、ケース底壁部２３に取り付けられている。 In the case of the embodiment, the tip of each loop portion 68 is attached to the bottom wall portion 23 of the case 21 by retainers 30 A and 30 B as fixing means fixed to the case 21. In the case of the embodiment, the mounting piece portions 66A and 66A disposed before and after each inflow port portion 44 are attached to the case bottom wall portion 23 by the retainer 30A and are disposed on the front edge side of the front horizontal cell portion 39. The attaching piece portion 66B is attached to the case bottom wall portion 23 by the retainer 30B.

リテーナ３０Ａは、図４に示すように、上方から見て、横向きのＵ字形状として形成され、左右方向に延びる二本の横棒部３０ａ・３０ａと、横棒部３０ａ・３０ａの端部相互を連結する縦棒部３０ｂと、を備えて構成されている。各横棒部３０ａの左右両端付近には、下方へ突出するボルト３１が、配設されている。リテーナ３０Ｂは、図４に示すように、横棒部３０ａのみからなる構成とされている。そして、実施形態では、各リテーナ３０Ａの各横棒部３０ａを、各流入口部４４の前後の取付片部６６Ａのループ部６８に挿入させ、リテーナ３０Ｂの横棒部３０ａを取付片部６６Ｂのループ部６８に挿入させ、ループ部６８を各横棒部３０ａのボルト３１・３１間に配置させて、各ボルト３１を、ケース２１の底壁部２３の取付孔２３ｂに貫通させるとともに、インナパネル９から突出させ、ナット３２止めすることにより、各取付片部６６Ａ・６６Ｂが、ケース２１に取り付けられ、さらに、ケース２１とともに、インナパネル９に固定されることとなる。 As shown in FIG. 4, the retainer 30 A is formed as a horizontal U-shape as viewed from above, and extends between the two horizontal bar portions 30 a and 30 a and the end portions of the horizontal bar portions 30 a and 30 a. And a vertical bar portion 30b for connecting the two. Bolts 31 projecting downward are disposed near the left and right ends of each horizontal bar portion 30a. As shown in FIG. 4, the retainer 30 B is configured by only the horizontal bar portion 30 a. And in embodiment, each horizontal bar part 30a of each retainer 30A is inserted in the loop part 68 of the attachment piece part 66A before and behind each inflow port part 44, and the horizontal bar part 30a of the retainer 30B is attached to the attachment piece part 66B. The loop portion 68 is inserted, the loop portion 68 is disposed between the bolts 31 and 31 of each horizontal bar portion 30a, and each bolt 31 is passed through the mounting hole 23b of the bottom wall portion 23 of the case 21, and the inner panel 9, and the nut 32 is fixed, the attachment pieces 66 A and 66 B are attached to the case 21, and are fixed to the inner panel 9 together with the case 21.

そして、各取付片部６６Ａは、図１４に示すように、エアバッグ３４の膨張完了時に、横膨張部３８がケース２１の周壁部２２の上端付近より上方に、突出するように、基部６６ａと取付端部６６ｂとの長さ寸法を、設定している。また、取付片部６６Ｂは、図１４の二点鎖線に示すように、エアバッグ３４の膨張完了時にケース２１から突出してフードパネル８の上面を覆うように配設される横膨張部３８の前縁３８ａ（前横セル部３９の前縁）が、ケース２１側に必要以上に引っ張られず、円滑にフードパネル８の上面を覆うことができるように、基部６６ａと取付端部６６ｂとの長さ寸法を、設定している。 As shown in FIG. 14, each attachment piece portion 66 A has a base portion 66 a and a base portion 66 a so that the lateral inflating portion 38 protrudes upward from the vicinity of the upper end of the peripheral wall portion 22 of the case 21 when the inflation of the airbag 34 is completed. The length dimension with the attachment end part 66b is set. Further, as shown by a two-dot chain line in FIG. 14, the attachment piece portion 66 B protrudes from the case 21 when the airbag 34 is completely inflated and is disposed in front of the lateral inflating portion 38 disposed so as to cover the upper surface of the hood panel 8. The length of the base 66a and the mounting end 66b so that the edge 38a (the front edge of the front horizontal cell portion 39) is not pulled more than necessary on the case 21 side and can smoothly cover the upper surface of the hood panel 8. The dimensions are set.

なお、エアバッグ３４の流入口部４４における連通部４６の上下方向の長さ寸法は、横膨張部３８のケース２１からの突出時、連通部４６と横膨張部３８との連結部位、すなわち、ガス導入口５３の周縁におけるガス導入筒部５７との縫合部位６１に、引張力が作用しないような長さ寸法に、設定されている。換言すれば、ガス導入口５３の周縁におけるガス導入筒部５７との縫合部位６１に破損を招くような引張力が作用しないように、エアバッグ３４の膨張時における横膨張部３８のケース底壁部２３からの離隔距離が、各取付片部６６Ａによって、規制されている。なお、実施形態の場合、取付片部６６Ｂは、エアバッグ３４の膨張完了時において、横膨張部３８の前縁３８ａにおける左右方向の中央付近が、フードパネル８から大きく浮き上がることを防止するために、配設されている。 The vertical length of the communication portion 46 in the inlet portion 44 of the airbag 34 is the connecting portion between the communication portion 46 and the lateral expansion portion 38 when the lateral expansion portion 38 protrudes from the case 21, that is, The length is set such that a tensile force does not act on the stitched portion 61 with the gas introduction tube portion 57 at the periphery of the gas introduction port 53. In other words, the case bottom wall of the laterally inflated portion 38 when the airbag 34 is inflated so that a tensile force that causes breakage does not act on the stitched portion 61 with the gas introducing cylinder portion 57 at the periphery of the gas introducing port 53. The separation distance from the portion 23 is regulated by each mounting piece portion 66A. In the case of the embodiment, the attachment piece portion 66B is used to prevent the vicinity of the center in the left-right direction at the front edge 38a of the lateral inflating portion 38 from significantly rising from the hood panel 8 when the airbag 34 is inflated. Arranged.

このエアバッグ３４の製造について述べると、予め、所定形状に裁断した上壁部５１の所定位置に、補強布５４・５５と、各厚さ規制部６４を構成する布材６４ａと、を縫合しておき、下壁部５２の所定位置に、補強布５６と、各厚さ規制部６４を構成する布材６４ａと、を縫合しておく。また、下壁部５２に、各ガス導入口５３を形成するとともに、各取付片部６６Ａのベルト部６７・６７を縫合させておく。さらに、筒部用布材５８の本体布５９に補強布６０を重ねて、折目Ｆ０で二つ折りして、図１２のＡ・Ｂに示すように、外周縁相互の一点鎖線で示すエリア５８ａの部位を縫合して、流入口部４４を筒状に形成するとともに、整流部４８の下縁側（流入口部４４側）となる部位相互を、縫合する。なお、縫合には、ポリエステル糸等の縫合糸Ｓを使用して、行なう。 The manufacture of the airbag 34 will be described. The reinforcing cloths 54 and 55 and the cloth material 64a constituting each thickness restricting portion 64 are sewn into predetermined positions of the upper wall portion 51 cut into a predetermined shape in advance. The reinforcing cloth 56 and the cloth material 64a constituting each thickness restricting portion 64 are stitched at predetermined positions of the lower wall portion 52. In addition, the gas introduction ports 53 are formed in the lower wall portion 52, and the belt portions 67 and 67 of the attachment piece portions 66A are sewn. Further, the reinforcing cloth 60 is overlapped on the main body cloth 59 of the cylinder portion cloth material 58, folded in two at the crease F0, and as shown in FIGS. 12A and 12B, an area 58a indicated by a one-dot chain line between the outer peripheral edges. The inflow port portion 44 is formed in a cylindrical shape, and the portions on the lower edge side (inflow port portion 44 side) of the rectifying portion 48 are sewn together. The suturing is performed using a suture S such as a polyester thread.

そして、図１２のＢ・Ｃに示すように、エアバッグ本体３５の内周面側となる方向から外周面側に流入口部４４を突出させるように、下壁部５２の各ガス導入口５３に流入口部４４を挿入させ、各ガス導入口５３の周縁に、筒部用布材５８の整流部４８を形成する側における流入口部４４の近傍を重ね、筒部用布材５８の二点鎖線で示すエリア５８ｂとガス導入口５３の周縁とを縫合する。 Then, as shown in FIGS. 12B and 12C, the gas inlets 53 of the lower wall portion 52 are protruded from the direction of the inner peripheral surface of the airbag body 35 toward the outer peripheral surface. The inlet portion 44 is inserted into the gas inlet port 53, and the vicinity of the inlet portion 44 on the side where the rectifying portion 48 of the tubular portion fabric material 58 is formed is overlapped with the periphery of each gas inlet port 53. The area 58b indicated by the chain line and the periphery of the gas inlet 53 are stitched together.

その後、図１２のＣ・Ｄに示すように、筒部用布材５８における整流部４８を形成する側の端縁のエリア５８ｃ相互を重ねて縫合すれば、整流部４８を形成して、ガス導入筒部５７を製造することができる。 Thereafter, as shown in FIGS. 12C and 12D, if the edge portions 58c on the side where the rectifying portion 48 is formed in the tubular fabric material 58 are overlapped and stitched together, the rectifying portion 48 is formed and the gas is formed. The introduction cylinder part 57 can be manufactured.

次いで、布材６４ａの端末相互を縫合するとともに、下壁部５２の上に上壁部５１を重ねて、上・下壁部５１・５２の外周縁相互を縫合し、さらに、縫合糸６３ｃを使用して、区画部６３を形成するように、上・下壁部５１・５２相互を縫合する。そして、横膨張部３８の前縁側中央付近に、取付片部６６Ｂのベルト部６７・６７を縫合させれば、エアバッグ３４を製造することができる。なお、各取付片部６６Ａは、上・下壁部５１・５２の外周縁相互の縫合直前に、下壁部５２に結合させてもよい。 Next, the end portions of the cloth material 64a are sewn together, the upper wall portion 51 is overlapped on the lower wall portion 52, the outer peripheral edges of the upper and lower wall portions 51 and 52 are sewn together, and the suture thread 63c is further threaded. In use, the upper and lower wall portions 51 and 52 are stitched together so as to form the partition portion 63. The airbag 34 can be manufactured by sewing the belt portions 67 and 67 of the attachment piece 66B near the center of the front edge side of the lateral inflating portion 38. Each attachment piece 66A may be coupled to the lower wall portion 52 immediately before the outer peripheral edges of the upper and lower wall portions 51 and 52 are sewn together.

このように製造したエアバッグ３４は、ケース２１に収納可能に折り畳んだ後、インフレーター２５と接続させて、リテーナ３０Ａ・３０Ｂを使用して、ケース２１に取り付けることとなる。 The airbag 34 manufactured in this manner is folded so as to be housed in the case 21, connected to the inflator 25, and attached to the case 21 using the retainers 30 A and 30 B.

エアバッグ３４の折り畳みは、上壁部５１と下壁部５２とを相互に重ねて平らに展開させた状態から、ケース２１に収納可能に、前後方向の幅寸法を狭めるように、左右方向に沿った折目を付ける横折り工程と、左右方向の幅寸法を狭めるように、前後方向に沿った折目を付ける縦折り工程と、を経て折り畳む。実施形態の場合、エアバッグ３４は、横折り工程を経た後、縦折り工程で折り畳んで、折り畳み工程を完了させている。 The airbag 34 is folded in the left-right direction so that the upper wall portion 51 and the lower wall portion 52 overlap each other and can be accommodated in the case 21 so that the width in the front-rear direction can be reduced. It folds through the horizontal folding process which folds along, and the vertical folding process which folds along the front-back direction so that the width dimension of the left-right direction may be narrowed. In the case of the embodiment, the airbag 34 is folded in the vertical folding process after the horizontal folding process, thereby completing the folding process.

そして、横折り工程では、図１３のＡ・Ｂに示すように、上壁部５１と下壁部５２とを相互に重ねて平らに展開した状態から、まず、流入口部４４の前方側となる前部側部位７０（前横セル部３９と各縦膨張部４２の前端側部位）を、横膨張部３８の前縁３８ａを流入口部４４に接近させるように下壁部５２の側で巻いてロール折りするとともに、流入口部４４の後方側となる後部側部位７１（後横セル部４０と各縦膨張部４２の後端側部位）を、左右の縦膨張部４２の後縁４２ａを流入口部４４に接近させるように下壁部５２の側で巻いて、ロール折りする。次いで、図１３のＢ・Ｃに示すように、ロール折りした後部側部位７１を流入口部４４・４４の上方に配置させ、さらに、図１３のＣ・Ｄに示すように、後部側部位７１の上方に、ロール折りした前部側部位７０を載せて、前後方向の幅寸法をケース２１の開口２１ａにおける前後方向の幅寸法に対応させるように、ロール折り完了体７３を形成して、横折り工程を完了させる。 Then, in the lateral folding process, as shown in FIGS. 13A and 13B, from the state where the upper wall portion 51 and the lower wall portion 52 are overlapped with each other and flattened, first, the front side of the inflow port portion 44 and The front side portion 70 (the front lateral cell portion 39 and the front end side portion of each vertical expansion portion 42) is formed on the side of the lower wall portion 52 so that the front edge 38a of the horizontal expansion portion 38 approaches the inflow port portion 44. While being rolled and folded, a rear side portion 71 (rear end side portion of the rear horizontal cell portion 40 and each vertical expansion portion 42) on the rear side of the inflow port portion 44 is connected to the rear edge 42a of the left and right vertical expansion portions 42. Is wound on the side of the lower wall portion 52 so as to approach the inflow port portion 44, and is rolled. Next, as shown in FIGS. 13B and 13C, the rear-side portion 71 that is roll-folded is disposed above the inflow port portions 44 and 44, and further, as shown in FIGS. 13C and 13D, the rear-side portion 71 A roll folding completion body 73 is formed so that the front-side portion 70 that is roll-folded is placed above the front-side portion so that the width dimension in the front-rear direction corresponds to the width dimension in the front-rear direction in the opening 21 a of the case 21. Complete the folding process.

その後、ケース２１の開口２１ａの左右方向の幅寸法に対応させて、ロール折り完了体７３の左右方向の幅寸法を狭めるように、図１３のＤ・Ｅに示すごとく、左右の端部７３ｂ・７３ｂを、上方側から中央７３ａ側に折り畳んで、縦折り工程を完了させれば、エアバッグ３４の折り畳み工程を終了させることができる。 After that, as shown in FIG. 13D and E, the left and right end portions 73b and so as to narrow the width dimension in the left and right direction of the roll folding completed body 73 in correspondence with the width dimension in the left and right direction of the opening 21a of the case 21. The folding process of the airbag 34 can be completed by folding 73b from the upper side to the center 73a side and completing the longitudinal folding process.

エアバッグ３４を折り畳んだあとには、折り崩れ防止用のラッピング材で、折り畳んだエアバッグ３４をくるみ、その後、インフレーター２５・２５を、エアバッグ３４の各流入口部４４における挿入口部４５の挿入口４５ａに挿入させて、クランプ７５の止め輪７５ａをボルト７５ｂ・ナット７５ｃ止めして、挿入口部４５をインフレーター２５の先端２５ａに押圧して、エアバッグ３４と各インフレーター２５・２５とを連結する。そして、各取付片部６６Ａ・６６Ｂのループ部６８にリテーナ３０Ａ・３０Ｂの横棒部３０ａを挿入し、エアバッグ３４とインフレーター２５とをケース２１に収納させて、インフレーター２５やリテーナ３０Ａ・３０Ｂの各ボルト２７・３１をケース２１の底壁部２３の取付孔２３ａ・２３ｂから突出させ、各ボルト３１に、底壁部２３からの抜け防止用の図示しないスプリングワッシャを嵌めておく。また、各ボルト２７にナット２８を締結させ、さらに、予め、ケース２１の後壁部２２ｃに各連結片１８をねじ１９止めしておいたカバー１６を、各係止脚１７を係止孔２２ｂに挿入係止させて、ケース２１に組み付ければ、歩行者用エアバッグ装置Ｍ１を、組み立てることができる。 After the airbag 34 is folded, the folded airbag 34 is wrapped with a wrapping material for preventing collapse, and then the inflators 25 and 25 are connected to the inlets 45 of the inlet portions 44 of the airbag 34. Inserting it into the insertion port 45a, fixing the retaining ring 75a of the clamp 75 with bolts 75b and nuts 75c, and pressing the insertion port part 45 against the tip 25a of the inflator 25, the airbag 34 and the inflators 25 and 25 are connected. Link. And the horizontal bar part 30a of retainer 30A * 30B is inserted in the loop part 68 of each attachment piece part 66A * 66B, the airbag 34 and the inflator 25 are accommodated in the case 21, and the inflator 25 and retainer 30A * 30B are accommodated. The bolts 27 and 31 are protruded from the mounting holes 23 a and 23 b of the bottom wall portion 23 of the case 21, and spring washers (not shown) for preventing the bolts 31 from coming off from the bottom wall portion 23 are fitted into the bolts 31. Further, a nut 28 is fastened to each bolt 27, and the cover 16 in which each connecting piece 18 is screwed 19 to the rear wall portion 22c of the case 21 in advance, and each locking leg 17 is locked to the locking hole 22b. The pedestrian airbag device M1 can be assembled by being inserted and locked to the case 21 and assembled to the case 21.

そして、車両Ｖのボディ１側に組みつけられているフードパネル８のインナパネル９に対し、各ボルト３１をインナパネル９の取付座１１に貫通させて、各ボルト３１にナット３２を締結すれば、歩行者用エアバッグ装置Ｍ１を車両Ｖに搭載することができる。 And if each bolt 31 is penetrated to the attachment seat 11 of the inner panel 9 with respect to the inner panel 9 of the hood panel 8 assembled | attached to the body 1 side of the vehicle V, and the nut 32 will be fastened to each bolt 31 The pedestrian airbag device M1 can be mounted on the vehicle V.

なお、車両Ｖへの歩行者用エアバッグ装置Ｍ１の搭載時、図示しないエアバッグ作動回路からの作動信号入力用のリード線を、インフレーター２５側に接続させておく。 When the pedestrian airbag device M1 is mounted on the vehicle V, an operation signal input lead wire from an airbag operation circuit (not shown) is connected to the inflator 25 side.

実施形態の歩行者用エアバッグ装置Ｍでは、車両搭載状態において、エアバッグ作動回路からインフレーター２５・２５に作動信号が入力されれば、各インフレーター２５から膨張用ガスＧが吐出され、エアバッグ３４が、膨張用ガスＧを流入させて膨張する。そして、ケース２１の開口２１ａを覆っていたカバー１６が、エアバッグ３４に押されて、係止脚１７を係止孔２２ｂから引き抜かせて、開口２１ａを開口させ、エアバッグ３４は、開口２１ａから上方に向かって突出し、図１・２の二点鎖線及び図１４に示すように、膨張を完了させることとなる。 In the pedestrian airbag apparatus M according to the embodiment, when an operation signal is input from the airbag operation circuit to the inflators 25 and 25 in the vehicle mounted state, the inflation gas G is discharged from each inflator 25 and the airbag 34. However, the expansion gas G flows in and expands. Then, the cover 16 covering the opening 21a of the case 21 is pushed by the airbag 34, and the locking leg 17 is pulled out from the locking hole 22b, thereby opening the opening 21a. The projection protrudes upward from the bottom, and the expansion is completed as shown by the two-dot chain line in FIGS. 1 and 2 and FIG.

そして、実施形態の歩行者用エアバッグ装置Ｍ１では、作動時、インフレーター２５から膨張用ガスＧが吐出されれば、膨張用ガスＧは、流入口部（ガス流入口部）４４から流入して、整流部（整流布）４８により、前横セル部３９内において左右両側に向かって流入するとともに、後横セル部４０内にも流入して、２つの前・後横セル部３９・４０を膨張させて横膨張部３８を膨張させ、その後、縦膨張部４２・４２内に流入して縦膨張部４２・４２を膨張させることとなる。すなわち、実施形態の歩行者用エアバッグ装置Ｍ１では、流入口部４４から流入する膨張用ガスＧは、整流部４８により、ガス流出孔４８ａ・４８ａから前横セル部３９内に左右両側に向かって流入する膨張用ガスＧＦと、ガス流出孔４８ｂから後横セル部４０内に向かうように後方に向かって流入する膨張用ガスＧＢと、に、分岐されることとなり、内部に流入した膨張用ガスＧＦ・ＧＢが、各前・後横セル部３９・４０を膨張させた後、縦膨張部４２・４２内に流入することとなる（図１５参照）。そのため、実施形態の歩行者用エアバッグ装置Ｍ１では、横膨張部３８全体が膨張を略完了させた後に、縦膨張部４２・４２内に膨張用ガスが流入することとなることから、従来の歩行者用エアバッグ装置のごとく、縦膨張部４２・４２内において膨張用ガスが逆流するような現象が起きず、縦膨張部４２・４２を、左右へのばたつきを抑えて、迅速かつ的確に、フロントピラー４の下部側部位４ａにおける前面側を覆えるように、膨張させることができる。 In the pedestrian airbag apparatus M1 according to the embodiment, when the inflation gas G is discharged from the inflator 25 during operation, the inflation gas G flows from the inlet portion (gas inlet portion) 44. The rectifying section (rectifying cloth) 48 flows into the front horizontal cell section 39 toward both the left and right sides, and also flows into the rear horizontal cell section 40 so that the two front and rear horizontal cell sections 39 and 40 are connected. The lateral expansion part 38 is expanded to expand, and then flows into the vertical expansion parts 42 and 42 to expand the vertical expansion parts 42 and 42. That is, in the pedestrian airbag apparatus M1 of the embodiment, the inflation gas G flowing from the inlet port 44 is directed to the left and right sides from the gas outlet holes 48a and 48a into the front horizontal cell portion 39 by the rectifier 48. The expansion gas GF that flows in and the expansion gas GB that flows backward from the gas outflow hole 48b into the rear horizontal cell portion 40 are branched and expanded. The gas GF / GB expands the front / rear horizontal cell portions 39/40 and then flows into the vertical expansion portions 42/42 (see FIG. 15). Therefore, in the pedestrian airbag apparatus M1 of the embodiment, the inflation gas flows into the longitudinal inflation portions 42 and 42 after the entire lateral inflation portion 38 is almost completely inflated. Like a pedestrian airbag device, there is no phenomenon in which the inflation gas flows backward in the longitudinal inflating portions 42, 42, and the longitudinal inflating portions 42, 42 can be quickly and accurately controlled with no flapping from side to side. The front pillar 4 can be inflated so as to cover the front side of the lower part 4a.

従って、実施形態の歩行者用エアバッグ装置Ｍ１では、展開膨張初期時において縦膨張部４２・４２が、迅速かつ的確に、フロントピラー４の下部側部位４ａにおける前面側を覆えるように、エアバッグ３４を展開膨張させることができる。 Therefore, in the pedestrian airbag apparatus M1 according to the embodiment, the longitudinally inflated portions 42 and 42 can be quickly and accurately covered with the front side of the lower side portion 4a of the front pillar 4 at the initial stage of deployment and inflation. The bag 34 can be deployed and inflated.

また、実施形態の歩行者用エアバッグ装置Ｍ１において、収納部位としてのケース２１を、フードパネル８自体の後縁８ｂ近傍に配設させていることから、流入口部４４を、横膨張部３８における前横セル部３９側に、配設させる構成としている。エアバッグ３４をこのような構成とすれば、前横セル部３９自体でフードパネル８の後縁８ｂ近傍の上面側を覆うことができ、さらに、後横セル部４０により、フロントウィンドシールド３の下部側部位３ａの上面側を覆うことができることから、膨張を完了させた横膨張部３８により、カウル２の上面側を前後に広く覆うことができて、好ましい。 Further, in the pedestrian airbag apparatus M1 of the embodiment, the case 21 as a storage part is disposed in the vicinity of the rear edge 8b of the hood panel 8 itself, so that the inflow port portion 44 is connected to the lateral inflating portion 38. It is set as the structure arrange | positioned in the front horizontal cell part 39 side. If the airbag 34 has such a configuration, the front side cell portion 39 itself can cover the upper surface side in the vicinity of the rear edge 8b of the hood panel 8, and further, the rear side cell portion 40 allows the front windshield 3 to be covered. Since the upper surface side of the lower part 3a can be covered, the upper surface side of the cowl 2 can be covered widely in the front and rear directions by the lateral expansion part 38 that has completed the expansion, which is preferable.

また、図１６・１７に示す歩行者用エアバッグ装置Ｍ２のごとく、収納部位としてのケース８３を、カウル７９の部位に配設させる構成としてもよい。歩行者用エアバッグ装置Ｍ２では、上方を開口させた有底の箱形状のケース８３を、カウルルーバ８０の下方において、ブラケット８４を利用して、カウルパネル８１に連結させている。カウルルーバ８０には、ケース開口８３ａを覆うとともに、エアバッグ３４Ａの展開膨張時に開き可能とされるエアバッグカバー８０ａが、カウルルーバ８０と一体的に、配設されている。そして、エアバッグ装置Ｍ２のエアバッグ３４Ａでは、横膨張部３８Ａの後横セル部４０Ａ側に、流入口部４４Ａが配設されており、流入口部４４Ａに連通される整流部４８Ａは、前横セル部３９Ａ側に膨張用ガスを流出可能なように、ガス流出孔４８ｂを、前部側に、配設させた構成とされている。また、整流部４８Ａの左右両端側には、後横セル部４０Ａ内に膨張用ガスを流出させるガス流出孔４８ａ・４８ａが、配設されている（図１８参照）。この歩行者用エアバッグ装置Ｍ２は、装置の配置位置と、エアバッグ３４Ａにおける流入口部４４Ａの配置位置以外は、前述の歩行者用エアバッグ装置Ｍ１と同様の構成であることから、同一の部材には、同一の図符号を付して説明を省略している。 Moreover, it is good also as a structure which arrange | positions the case 83 as a storage location in the site | part of the cowl 79 like the airbag apparatus M2 for pedestrians shown in FIG. In the pedestrian airbag apparatus M 2, a box-shaped case 83 with a bottom that opens upward is coupled to the cowl panel 81 using a bracket 84 below the cowl louver 80. The cowl louver 80 is provided with an airbag cover 80a that covers the case opening 83a and that can be opened when the airbag 34A is deployed and inflated. In the airbag 34A of the airbag device M2, the inlet portion 44A is disposed on the rear lateral cell portion 40A side of the lateral inflating portion 38A, and the rectifying portion 48A communicating with the inlet portion 44A A gas outflow hole 48b is arranged on the front side so that the expansion gas can flow out to the side cell portion 39A. Further, gas outflow holes 48a and 48a for allowing the expansion gas to flow out into the rear horizontal cell portion 40A are disposed on the left and right ends of the rectifying portion 48A (see FIG. 18). This pedestrian airbag apparatus M2 has the same configuration as the pedestrian airbag apparatus M1 described above except for the arrangement position of the apparatus and the arrangement position of the inflow port portion 44A in the airbag 34A. The members are denoted by the same reference numerals and description thereof is omitted.

このような構成の歩行者用エアバッグ装置Ｍ２においても、流入口部４４Ａから流入する膨張用ガスＧは、整流部４８Ａにより、図１８に示すごとく、ガス流出孔４８ａ・４８ａから後横セル部４０Ａ内に左右両側に向かって流入する膨張用ガスＧＢと、ガス流出孔４８ｂから前横セル部３９Ａ内に向かうように前方に向かって流入する膨張用ガスＧＦと、に、分岐されることとなり、内部に流入した膨張用ガスＧＦ・ＧＢが、各前・後横セル部３９Ａ・４０Ａを膨張させた後、縦膨張部４２Ａ・４２Ａ内に流入することとなる。そのため、実施形態の歩行者用エアバッグ装置Ｍ２においても、横膨張部３８Ａ全体が膨張を略完了させた後に、縦膨張部４２Ａ・４２Ａ内に膨張用ガスが流入することとなることから、縦膨張部４２Ａ・４２Ａを、左右へのばたつきを抑えて、迅速かつ的確に、フロントピラー４の下部側部位４ａにおける前面側を覆えるように、膨張させることができる。 Also in the pedestrian airbag apparatus M2 having such a configuration, the inflation gas G flowing in from the inflow port portion 44A is caused to flow from the gas outflow holes 48a and 48a by the rectifying portion 48A as shown in FIG. The expansion gas GB that flows into the left and right sides of 40A and the expansion gas GF that flows forward from the gas outflow hole 48b into the front horizontal cell portion 39A are branched. The expansion gas GF / GB flowing into the interior expands the front / rear horizontal cell portions 39A / 40A and then flows into the longitudinal expansion portions 42A / 42A. Therefore, also in the pedestrian airbag device M2 of the embodiment, the inflation gas flows into the longitudinal inflating portions 42A and 42A after the entire lateral inflating portion 38A is substantially inflated. The inflating portions 42A and 42A can be inflated so as to cover the front side of the lower side portion 4a of the front pillar 4 quickly and accurately while suppressing the flapping to the left and right.

そして、収納部位を、カウル７９の部位に配設させる構成の歩行者用エアバッグ装置では、実施形態のエアバッグ装置Ｍ２のごとく、エアバッグ３４Ａの流入口部４４Ａを、横膨張部３８Ａにおける後横セル部４０Ａ側に、配設させる構成とすれば、図１７・１８に示すように、後横セル部４０Ａ自体でカウル７９の部位の上面側を覆うことができ、さらに、前横セル部３９Ａにより、フードパネル８Ａの後縁８ａの上面側を覆うことができることから、膨張を完了させた横膨張部３８Ａにより、カウル７９の上面側を前後に広く覆うことができて、好ましい。 And in the airbag apparatus for pedestrians of the structure which arrange | positions a storage site | part to the site | part of the cowl 79, like the airbag apparatus M2 of embodiment, the inflow port part 44A of the airbag 34A is made into the back in the horizontal expansion part 38A. If it is configured to be disposed on the side of the horizontal cell portion 40A, as shown in FIGS. 17 and 18, the rear horizontal cell portion 40A itself can cover the upper surface side of the cowl 79, and the front horizontal cell portion Since the upper surface side of the rear edge 8a of the hood panel 8A can be covered by 39A, the upper surface side of the cowl 79 can be covered widely in the front-rear direction by the laterally expanded portion 38A that has completed the expansion, which is preferable.

勿論、エアバッグ装置の配置位置と、流入口部の配置位置とは、上記に限られるものではなく、上記点を考慮しなければ、例えば、フードパネルの後縁近傍にケースを配設させる構成の歩行者用エアバッグ装置に、流入口部を後横セル部側に配設させた構成のエアバッグを使用してもよく、さらには、カウルの部位にケースを配設させる構成の歩行者用エアバッグ装置に、流入口部を前横セル部側に配設させた構成のエアバッグを使用してもよい。 Of course, the arrangement position of the airbag device and the arrangement position of the inflow port portion are not limited to the above, and if the above points are not taken into account, for example, a configuration in which a case is arranged near the rear edge of the hood panel The pedestrian airbag device may be an airbag having an inlet portion disposed on the rear lateral cell portion side, and further, a pedestrian having a configuration in which a case is disposed at a cowl portion. You may use the airbag of the structure which has arrange | positioned the inflow port part to the front horizontal cell part side for the air bag apparatus.

なお、実施形態のエアバッグ装置Ｍ１・Ｍ２では、インフレーター２５を２箇所に配設させているが、インフレーターの配設数はこれに限られるものではなく、左右方向の中央付近となる１箇所にインフレーターを配設させる構成としてもよい。また、実施形態のエアバッグ装置Ｍ１・Ｍ２では、インフレーター２５をエアバッグ３４・３４Ａの流入口部（ガス流入口部）４４・４４Ａと連結させている構成であるが、インフレーターを、周囲に整流布を配設させてエアバッグ内に収納させる構成としてもよい。この場合、ガス流入口部は、エアバッグの内部に配設されることとなって、インフレーターと接続させた流入口部を経て、整流布から、エアバッグ内に膨張用ガスが流入することとなる。 In the airbag devices M1 and M2 of the embodiment, the inflator 25 is disposed at two locations, but the number of inflators is not limited to this, and the inflator 25 is disposed at one location near the center in the left-right direction. It is good also as a structure which arrange | positions an inflator. Further, in the airbag apparatus M1 and M2 of the embodiment, the inflator 25 is connected to the inlet portions (gas inlet portions) 44 and 44A of the airbags 34 and 34A. It is good also as a structure which arrange | positions cloth and stores in an airbag. In this case, the gas inlet portion is disposed inside the airbag, and the inflation gas flows into the airbag from the rectifying cloth via the inlet portion connected to the inflator. Become.

本発明の第１実施形態である歩行者用エアバッグ装置を搭載させた車両の側面図である。1 is a side view of a vehicle on which a pedestrian airbag apparatus according to a first embodiment of the present invention is mounted. 実施形態の歩行者用エアバッグ装置を搭載させた車両の平面図である。It is a top view of the vehicle carrying the airbag apparatus for pedestrians of embodiment. 実施形態の歩行者用エアバッグ装置の車両前後方向に沿った概略縦断面図であり、図２のIII−III部位に対応する。It is a schematic longitudinal cross-sectional view along the vehicle front-back direction of the airbag apparatus for pedestrians of embodiment, and respond | corresponds to the III-III site | part of FIG. 実施形態の歩行者用エアバッグ装置におけるエアバッグ、インフレーター、リテーナ、及び、ケースの分解斜視図である。It is a disassembled perspective view of the airbag, the inflator, the retainer, and the case in the airbag apparatus for pedestrians of embodiment. 実施形態の歩行者用エアバッグ装置に使用するエアバッグを単体で膨張させた状態の平面図である。It is a top view of the state where the air bag used for the pedestrian air bag device of an embodiment was inflated alone. 実施形態の歩行者用エアバッグ装置に使用するエアバッグを単体で膨張させた状態の底面図である。It is a bottom view of the state where the airbag used for the airbag device for pedestrians of an embodiment was inflated alone. 実施形態のエアバッグの縦断面図であり、図６のVII−VII部位に対応する。It is a longitudinal cross-sectional view of the airbag of embodiment, and respond | corresponds to the VII-VII site | part of FIG. 実施形態のエアバッグの部分縦断面図であり、図６のVIII−VIII部位に対応する。It is a fragmentary longitudinal cross-sectional view of the airbag of embodiment, and respond | corresponds to the VIII-VIII site | part of FIG. 実施形態のエアバッグを下方側から見た部分斜視図であり、流入口部付近を示す図である。It is the fragmentary perspective view which looked at the air bag of an embodiment from the lower part side, and is a figure showing the inflow mouth part neighborhood. 実施形態のエアバッグを上方側から見た部分破断斜視図であり、整流部付近を示す図である。It is the partial fracture perspective view which looked at the air bag of an embodiment from the upper part side, and is a figure showing the rectification part neighborhood. 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に使用する筒部用部材をエアバッグに結合させる工程を、順に説明する図である。It is a figure explaining the process of combining the member for cylinder parts used for the airbag of an embodiment with an airbag in order. 実施形態のエアバッグの折り畳み工程を順に説明する図である。It is a figure explaining the folding process of the airbag of an embodiment in order. 実施形態の歩行者用エアバッグ装置の作動状態を示す断面図である。It is sectional drawing which shows the operating state of the airbag apparatus for pedestrians of embodiment. 実施形態の歩行者用エアバッグ装置の作動時における膨張用ガスの流れを説明する平面図である。It is a top view explaining the flow of the gas for inflation at the time of the action | operation of the airbag apparatus for pedestrians of embodiment. 本発明の第２実施形態である歩行者用エアバッグ装置の車両前後方向に沿った概略縦断面図である。It is a schematic longitudinal cross-sectional view along the vehicle front-back direction of the airbag apparatus for pedestrians which is 2nd Embodiment of this invention. 実施形態の歩行者用エアバッグ装置の作動状態を示す断面図である。It is sectional drawing which shows the operating state of the airbag apparatus for pedestrians of embodiment. 実施形態の歩行者用エアバッグ装置の作動時における膨張用ガスの流れを説明する平面図である。It is a top view explaining the flow of the gas for inflation at the time of the action | operation of the airbag apparatus for pedestrians of embodiment.

Explanation of symbols

１…ボディ、
２・７９…カウル、
３…フロントウィンドシールド、
８…フードパネル、
１６…カバー、
２１・８３…ケース（収納部位）、
２５…インフレーター、
３４・３４Ａ…エアバッグ、
３８・３８Ａ…横膨張部、
３９・３９Ａ…前横セル部、
４０・４０Ａ…後横セル部、
４２…縦膨張部、
４４・４４Ａ…流入口部（ガス流入口部）、
４８・４８Ａ…整流部（整流布）、
膨張用ガスＧ（ＧＦ・ＧＢ）
Ｖ…車両、
Ｍ１・Ｍ２…歩行者用エアバッグ装置。 1 ... Body
2.79 ... Cowl,
3. Front windshield,
8 ... Food panel,
16 ... cover,
21.83. Case (storage part),
25 ... Inflator,
34 / 34A ... Airbag,
38 / 38A ... Lateral expansion part,
39.39A ... Front horizontal cell part,
40 · 40A: Rear horizontal cell,
42 ... longitudinal expansion part,
44, 44A ... Inlet part (gas inlet part),
48.48A ... Rectifying part (rectifying cloth),
Gas G for expansion (GF / GB)
V ... Vehicle,
M1, M2 ... Pedestrian airbag device.

Claims

An airbag configured to be folded and stored in a storage portion on the front side of the front windshield of the vehicle and to be expanded and inflated by projecting from the storage portion when inflating gas flows in, and an inflator for supplying the inflation gas to the airbag , And comprising
The airbag, as a completed inflation shape, has a lateral inflating portion that covers the vicinity of the upper surface side of the cowl, and a vertical inflating portion that extends from the vicinity of both left and right ends of the lateral inflating portion to the rear side and covers the front side of the left and right front pillars; The pedestrian airbag apparatus is configured to have a substantially U-shape when viewed from above, and a gas inlet port connected to the inflator is disposed in the laterally inflated portion. And
In the lateral expansion portion, a rectifying cloth that is in communication with the gas inlet portion and controls the inflow direction of the expansion gas flowing into the lateral expansion portion is disposed,
Two lateral cell portions arranged side by side in the front-rear direction by disposing a partition portion that is continuously disposed substantially along the left-right direction so as to partition the expansion region in the front-rear direction. In addition to being configured to be partitioned, the rectifying cloth is disposed in one of the horizontal cell portions,
The two horizontal cell portions are configured to be able to communicate with each other at a portion in the vicinity of the rectifying cloth,
The rectifying cloth is configured to include gas outflow holes through which expansion gas can flow out on three sides of the left and right sides of one of the horizontal cell portions and the other side of the horizontal cell portion. A pedestrian airbag device.

The storage part is configured to be disposed near the rear edge of the hood panel,
2. The pedestrian airbag apparatus according to claim 1, wherein the gas inflow port portion is arranged on the side of the lateral cell portion on the front side.

The storage part is configured to be disposed in a cowl part,
The pedestrian airbag device according to claim 1, wherein the gas inflow port portion is disposed on the side of the lateral cell portion on the rear side.