JP5455789B2

JP5455789B2 - Airbag

Info

Publication number: JP5455789B2
Application number: JP2010121921A
Authority: JP
Inventors: 寛行菅原
Original assignee: Nihon Plast Co Ltd
Current assignee: Nihon Plast Co Ltd
Priority date: 2010-05-27
Filing date: 2010-05-27
Publication date: 2014-03-26
Anticipated expiration: 2030-05-27
Also published as: JP2011246007A

Description

本発明は、例えば、自動車のインストルメントパネル部に備えられる助手席乗員用のエアバッグ装置のエアバッグに関する。 The present invention relates to an airbag of an airbag device for a passenger on a passenger seat provided in an instrument panel portion of an automobile, for example.

従来、例えば、自動車のインストルメントパネル部に備えられる助手席乗員用のエアバッグ装置が知られている。このエアバッグ装置は、ガスを供給するインフレータと、所定の形状に折り畳まれたエアバッグとを備えている。そして、自動車の衝突などの際には、インフレータからガスを供給して、助手席に着席した乗員の前方にエアバッグを膨張展開させ、乗員に加わる衝撃を緩和する。 DESCRIPTION OF RELATED ART Conventionally, the airbag apparatus for passenger seat passenger | crew with which the instrument panel part of a motor vehicle is equipped is known, for example. The airbag device includes an inflator that supplies gas and an airbag that is folded into a predetermined shape. In the event of an automobile collision, etc., gas is supplied from the inflator to inflate and deploy the airbag in front of the occupant seated in the passenger seat, thereby mitigating the impact applied to the occupant.

そして、このような助手席乗員用のエアバッグ装置のエアバッグについて、左右の独立したチャンバを備え、乗員の肋硬骨を押す形状が、乗員正面視にて、上方で接近し下方に向かって徐々に離れる形状とし、乗員の胸部中央部を柔らかく受け止めることを図った構成が知られている(例えば、特許文献１参照)。 And about the airbag of such an airbag apparatus for passenger seat passengers, the shape that includes left and right independent chambers and pushes the occupant's calcaneus approaches upward and gradually downwards in the passenger front view. A configuration is known in which the center of the chest of the occupant is softly received (see, for example, Patent Document 1).

しかしながら、独立した複数のチャンバを備える構成は、エアバッグを構成する基布を複雑に分割して接合する必要があり、構造が複雑になり製造工程が煩雑になって製造コストが上昇する。また、１個のチャンバで形成されるエアバッグについて、基布の組み合わせにより乗員に対向する凹設部を形成する構成においても、エアバッグの構成が複雑になり、製造コストが上昇する。さらに、１個のチャンバの内部にベルトを配置してエアバッグの展開形状を規制し、凹設部を形成する構成が考えられるが、所望の形状に凹設部を形成するためには、エアバッグの内側に複数のベルトを配置し、かつ、各ベルトを基布の内側の所定の位置に強固に接合することが必要になり、製造工程が煩雑になって製造コストが上昇する問題を有している。 However, the configuration including a plurality of independent chambers requires that the base fabric constituting the airbag be divided and joined in a complicated manner, which complicates the structure and complicates the manufacturing process and increases the manufacturing cost. Moreover, even in the configuration in which the recessed portion facing the occupant is formed by combining the base fabric with the airbag formed by one chamber, the configuration of the airbag becomes complicated and the manufacturing cost increases. Furthermore, a configuration is considered in which a belt is arranged inside one chamber to regulate the shape of airbag deployment and a recessed portion is formed. In order to form a recessed portion in a desired shape, an air bag can be formed. It is necessary to place a plurality of belts on the inside of the bag, and to firmly join each belt to a predetermined position on the inside of the base fabric, resulting in a complicated manufacturing process and an increase in manufacturing cost. doing.

特開２００９−１２６６１号公報（第４−６頁、図３、図８）JP 2009-12661 A (page 4-6, FIG. 3, FIG. 8)

上記のように、乗員に対向して所定の形状の凹設部を形成するエアバッグは、構造が複雑になり製造工程が煩雑になって製造コストが上昇する問題を有している。 As described above, the airbag that forms the recessed portion having a predetermined shape facing the occupant has a problem that the structure becomes complicated, the manufacturing process becomes complicated, and the manufacturing cost increases.

本発明は、このような点に鑑みなされたもので、乗員に対向して所定の形状の凹設部を備えるとともに、製造コストを低減できるエアバッグを提供することを目的とする。 This invention is made | formed in view of such a point, and it aims at providing the airbag which can reduce a manufacturing cost while providing the recessed part of a predetermined shape facing a passenger | crew.

請求項１記載のエアバッグは、ガスが導入されて膨張展開する袋状の外殻部と、この外殻部の一部に設けられこの外殻部の膨張展開時に乗員に接触可能に対向する乗員対向面部と、一般部及び前記一般部より幅寸法の大きい幅広部を備えたベルト状をなし、前記外殻部の外側に配置され、前記外殻部の周面に沿った寸法より短い寸法となるようにこの外殻部に連結され、この外殻部の膨張展開時に前記乗員対向面部の一部に前記外殻部の内側に向かって凹設し乗員に対向して互いに幅寸法の異なる一般凹設部及び幅広凹設部を設けた凹設部を形成するベルトとを具備するものである。 The airbag according to claim 1 is provided with a bag-like outer shell portion that is inflated and deployed when gas is introduced, and is provided in a part of the outer shell portion so as to be in contact with an occupant when the outer shell portion is inflated and deployed. A belt-like shape having an occupant-facing surface portion, a general portion, and a wide portion having a larger width than the general portion, and is disposed outside the outer shell portion and is shorter than a size along the peripheral surface of the outer shell portion. The outer shell portion is connected to the outer shell portion so that the outer shell portion is inflated and deployed at a part of the occupant-facing surface portion toward the inner side of the outer shell portion so as to face the occupant and have different width dimensions. And a belt forming a recessed portion provided with a general recessed portion and a wide recessed portion.

請求項２記載のエアバッグは、請求項１記載のエアバッグにおいて、乗員対向面部は、車両の座席に着席した乗員に対向して展開し、ベルトは、前記乗員対向面部に上下方向に沿って配置され、一般部は、乗員の頭部に対向して配置され、幅広部は、乗員の胸部に対向して配置されたものである。 The airbag according to claim 2 is the airbag according to claim 1, wherein the occupant-facing surface portion is deployed to face an occupant seated in a vehicle seat, and the belt extends vertically along the occupant-facing surface portion. The general part is arranged to face the occupant's head, and the wide part is arranged to face the occupant's chest.

請求項３記載のエアバッグは、請求項２記載のエアバッグにおいて、外殻部の乗員対向面部を除く部分を構成するベース面部を備え、ベルトは、前記乗員対向面部の幅方向の中央部に沿って配置されるとともに、前記乗員対向面部の上側に連続する前記ベース面部と前記乗員対向面部の下側に連続する前記ベース面部とに連結され、前記外殻部の膨張展開時に、凹設部は、前記乗員対向面部から前記ベース面部の上部及び下部に連続して設けられて乗員の頭部及び胸部に対向し、この凹設部の両側に位置し前記凹設部よりも乗員側に相対的に突設され乗員の左右の肩部に対向する左右の肩対向部が構成されるものである。 The airbag according to claim 3 is the airbag according to claim 2, further comprising a base surface portion that constitutes a portion excluding the occupant facing surface portion of the outer shell portion, and the belt is provided at a central portion in the width direction of the occupant facing surface portion. And is connected to the base surface portion continuous above the occupant facing surface portion and the base surface portion continuous below the occupant facing surface portion, and is provided with a recessed portion when the outer shell portion is inflated and deployed. Is provided continuously from the occupant-facing surface portion to the upper and lower portions of the base surface portion so as to face the occupant's head and chest and is located on both sides of the recessed portion and relative to the occupant side relative to the recessed portion. The left and right shoulder-opposing portions that project from the left and right and face the left and right shoulder portions of the occupant are configured.

請求項１記載のエアバッグによれば、エアバッグの外殻部の内側にガスを導入すると、乗員対向面部が乗員に接触可能に対向して外殻部が膨張展開する。乗員対向面部に、乗員に対向して互いに幅寸法の異なる一般凹設部及び幅広凹設部を設けた凹設部を設けたため、乗員を適切に保護できる。互いに幅寸法の異なる一般凹設部及び幅広凹設部を設けた凹設部は、一般部及び幅広部を備えたベルトを外殻部の外側に配置し外殻部の周面に沿った寸法より短い寸法となるようにこの外殻部に連結することにより容易に形成でき、製造コストを低減できる。 According to the airbag of the first aspect, when the gas is introduced inside the outer shell portion of the airbag, the outer shell portion is inflated and deployed so that the occupant facing surface portion faces the occupant so as to be in contact with the occupant. Since the occupant-facing surface portion is provided with the recessed portion provided with the general recessed portion and the wide recessed portion that are opposed to the occupant and have different width dimensions, the occupant can be appropriately protected. The recessed portion provided with the general recessed portion and the wide recessed portion having different width dimensions is a dimension along the circumferential surface of the outer shell portion by arranging the belt having the general portion and the wide portion outside the outer shell portion. By connecting to the outer shell portion so as to have a shorter dimension, it can be easily formed, and the manufacturing cost can be reduced.

請求項２記載のエアバッグによれば、請求項１記載の効果に加え、ベルトの一般部により構成される一般凹設部により乗員の頭部を柔らかく拘束するとともに、ベルトの幅広部により構成される幅広凹設部により乗員の胸部をさらに柔らかく拘束して乗員を適切に保護できる。 According to the airbag of the second aspect, in addition to the effect of the first aspect, the occupant's head is softly restrained by the general recessed portion configured by the general portion of the belt, and the wide portion of the belt is configured. The occupant's chest can be restrained more softly by the wide recessed portion and the occupant can be properly protected.

請求項３記載のエアバッグによれば、請求項２記載の効果に加え、左右の肩対向部が乗員の左右の肩部に対向して乗員を確実に拘束するとともに、凹設部が乗員の頭部及び胸部に対向し柔らかく拘束し、乗員を適切に保護できる。 According to the airbag of the third aspect, in addition to the effect of the second aspect, the left and right shoulder facing portions securely restrain the occupant while facing the left and right shoulder portions of the occupant, and the recessed portion is Facing the head and chest and restraining it softly, it is possible to protect the occupant appropriately.

本発明のエアバッグの一実施の形態を示すエアバッグが展開した状態の説明図であり、(a)は分解した状態の斜視図、(b)は斜視図である。It is explanatory drawing of the state which the airbag which shows one Embodiment of the airbag of this invention was expand | deployed, (a) is a perspective view of the disassembled state, (b) is a perspective view. 同上エアバッグの展開し乗員を拘束した状態の説明図であり、(a)は乗員の頭部に対応する位置の説明図、(b)は乗員の胸部に対応する位置の説明図である。It is explanatory drawing of the state which expanded the airbag same as the above and restrained the passenger | crew, (a) is explanatory drawing of the position corresponding to a passenger | crew's head, (b) is explanatory drawing of the position corresponding to a passenger | crew's chest. 同上エアバッグの展開し乗員を拘束した状態の説明図である。It is explanatory drawing of the state which expanded the airbag same as the above and restrained the passenger | crew. 同上エアバッグのベルトの正面図である。It is a front view of the belt of an airbag same as the above. 同上エアバッグの展開した状態を示す図２(a)のＩ−Ｉ相当位置の断面図である。It is sectional drawing of the II equivalent position of Fig.2 (a) which shows the state which the airbag same as the above developed. 同上エアバッグの図５のII−II相当位置の断面図である。It is sectional drawing of the position corresponding to II-II of FIG. 5 of an airbag same as the above. 同上エアバッグの図５のIII−III相当位置の断面図である。FIG. 6 is a cross-sectional view of the airbag according to the embodiment, taken along the line III-III in FIG. 5. 同上エアバッグの基布の構成を示す説明図である。It is explanatory drawing which shows the structure of the base fabric of an airbag same as the above. 同上エアバッグの基布の構成を示す説明図である。It is explanatory drawing which shows the structure of the base fabric of an airbag same as the above. 同上エアバッグの基布の構成を示す説明図である。It is explanatory drawing which shows the structure of the base fabric of an airbag same as the above. 同上エアバッグの展開した状態を示す側面図である。It is a side view which shows the state which the airbag same as the above developed. 同上エアバッグの展開した状態を示す正面図である。It is a front view which shows the state which the airbag same as the above developed. 同上エアバッグの展開した状態を示す斜視図である。It is a perspective view which shows the state which the airbag same as the above developed. 同上エアバッグの展開した状態を示す平面図である。It is a top view which shows the state which the airbag same as the above developed. 同上エアバッグの展開した状態を示す底面図である。It is a bottom view which shows the state which the airbag same as the above developed.

以下、本発明のエアバッグの一実施の形態を図面を参照して説明する。 Hereinafter, an embodiment of an airbag according to the present invention will be described with reference to the drawings.

図２及び図３において、１はエアバッグ装置で、このエアバッグ装置１は、移動体である車両としての自動車２の座席３である助手席の前方、すなわち被保護物である助手席の乗員Ａの前方に位置する被設置部としてのインストルメントパネル部４の内側に配置され、助手席エアバッグあるいはアシストエアバッグとも呼ばれる助手席乗員用のエアバッグ装置１を構成している。なお、以下、前後方向、両側方向、及び上下方向は、それぞれエアバッグ装置１を自動車２に取り付けた状態における自動車２の直進方向を基準として説明する。また、各図において、乗員Ａは乗員を模したダミーにより示され、Ａ1は乗員の頭部の位置、Ａ2は乗員の胸部の位置、Ａ3は乗員の肩部の位置を示している。 2 and 3, reference numeral 1 denotes an airbag device. The airbag device 1 is an occupant in the front of a passenger seat that is a seat 3 of an automobile 2 as a vehicle that is a moving body, that is, an occupant of a passenger seat that is a protected object. An airbag device 1 for a passenger in a passenger seat, which is disposed inside an instrument panel portion 4 as an installed portion located in front of A and is also called a passenger seat airbag or an assist airbag, is configured. Hereinafter, the front-rear direction, the both-side direction, and the up-down direction will be described based on the straight traveling direction of the automobile 2 with the airbag device 1 attached to the automobile 2, respectively. In each figure, occupant A is shown by a dummy imitating the occupant, A1 indicates the position of the occupant's head, A2 indicates the position of the occupant's chest, and A3 indicates the position of the occupant's shoulder.

そして、インストルメントパネル部４は、後側すなわち助手席側に向かって若干下降する曲面状などに形成され、このインストルメントパネル部４の内側に配置された車体の部材に、エアバッグ装置１が正面側を上方に向け、あるいは上方から後側すなわち乗員Ａ側に向けて適宜傾斜した状態で固定されている。また、インストルメントパネル部４の上方には、前側下方から上側後方に向かって傾斜したウインドシールドであるフロントガラスが配置されている。 And the instrument panel part 4 is formed in the curved surface etc. which descend | fall slightly toward the back side, ie, a passenger seat side, etc., and the airbag apparatus 1 is attached to the member of the vehicle body arrange | positioned inside this instrument panel part 4. The front side is directed upward, or is fixed in a state where it is appropriately inclined from the upper side to the rear side, that is, the occupant A side. Further, a windshield that is a windshield that is inclined from the lower front side toward the upper rear side is disposed above the instrument panel portion 4.

そして、このエアバッグ装置１は、エアバッグモジュールとも呼び得るもので、基布にて構成された袋状のエアバッグ11、このエアバッグ11にガスを供給するインフレータ12、これらエアバッグ11とインフレータ12となどが取り付けられるケース体14、図示しないリテーナ、ブラケット、及び展開前のエアバッグ11を覆うカバー体などを備え、エアバッグ11は、シートベルトを装着して座席３に着席した乗員Ａに対向して展開するようになっている。 And this airbag apparatus 1 can also be called an airbag module, and is the bag-shaped airbag 11 comprised with the base fabric, the inflator 12 which supplies gas to this airbag 11, these airbag 11 and inflator 12 and the like, a retainer (not shown), a bracket, and a cover body that covers the airbag 11 before deployment. The airbag 11 is attached to the occupant A who is seated on the seat 3 with a seat belt. It is designed to deploy oppositely.

そして、ケース体14は、鉄板を組み合わせるなどして略箱状に形成され、正面側あるいはフロントガラスに向かう上側を開口部である矩形状の突出口とし、内側が、折り畳んだエアバッグ11を収納するエアバッグ収納部とされている。また、このエアバッグ収納部に臨み、ケース体14の底部には、単数あるいは複数、本実施の形態では２個のインフレータ12を取り付ける円孔及びボルトが挿入される取付孔を設けたインフレータ取付部が設けられている。さらに、ケース体14の両側部には、側部ブラケットが取り付けられ、ケース体14の前後部には、カバー体を係止して取り付ける爪状のカバー取付部が設けられている。 The case body 14 is formed in a substantially box shape by combining iron plates, etc., and the front side or the upper side toward the windshield is a rectangular projecting opening that is an opening, and the inside stores the folded airbag 11 It is considered as an airbag storage part. Further, an inflator mounting portion provided with a circular hole for mounting one or a plurality of, in this embodiment, two inflators 12 and a mounting hole for inserting a bolt, at the bottom of the case body 14 facing the airbag housing portion. Is provided. Further, side brackets are attached to both sides of the case body 14, and claw-like cover attachment portions are provided on the front and rear parts of the case body 14 to engage and attach the cover body.

また、カバー体は、カバー取付部に係止してケース体14に取り付けられ、通常時に突出口を覆うもので、樹脂にてインストルメントパネル部４と一体あるいは別体をなして形成され、他の部分より薄肉で容易に破断するテアラインが平面略Ｈ字状などに形成されている。 Further, the cover body is fixed to the case body 14 by being locked to the cover mounting portion, and normally covers the projecting opening, and is formed integrally or separately with the instrument panel portion 4 with resin. A tear line that is thinner than that portion and easily breaks is formed in a substantially H-shaped plane.

また、各インフレータ12は、円盤状の本体部を備え、この本体部からフランジ部が突設されているとともに、このフランジ部の上側に位置して複数のガス噴射口が設けられている。そして、本体部の内側には、点火器及び薬剤が収納され、底部に接続されたコネクタを介して伝えられる制御手段からの電気信号により、点火器が薬剤を燃焼させ、ガス噴射口から膨張用のガスを急速に供給するようになっている。また、フランジ部には、４個の取付孔が形成されている。なお、インフレータ12は、種々の形状があり、例えば円柱状の本体部を備えた１個のインフレータ12を用いることもできる。 Each inflator 12 includes a disk-shaped main body portion, a flange portion protruding from the main body portion, and a plurality of gas injection ports provided on the upper side of the flange portion. The igniter and the medicine are accommodated inside the main body, and the igniter burns the medicine by an electrical signal transmitted from the connector connected to the bottom, and is expanded from the gas injection port. The gas is supplied rapidly. Further, four mounting holes are formed in the flange portion. The inflator 12 has various shapes. For example, one inflator 12 having a cylindrical main body can be used.

また、リテーナは、リテーナ基板部と、このリテーナ基板部に取り付けられたスタッドボルトとを備えている。そして、リテーナ基板部には、インフレータ12の本体部が挿入される２個の円孔が形成されているとともに、各円孔を囲むようにして、それぞれ４個のスタッドボルトが下方に突設して固定されている。また、各スタッドボルトには、それぞれナットが螺合して締め付けられるようになっている。 Further, the retainer includes a retainer base plate portion and a stud bolt attached to the retainer base plate portion. The retainer substrate portion is formed with two circular holes into which the main body portion of the inflator 12 is inserted, and four stud bolts project downward and are fixed so as to surround each circular hole. Has been. Each stud bolt is tightened by screwing a nut.

また、ブラケットは、下側ブラケットとも呼び得るもので、ケース体取付部と、このケース体取付部から下方に延設された車体側取付部とを備えている。そして、ケース体取付部には、取付孔が４カ所に形成され、車体側取付部には、ねじ孔を有するナット部が２カ所に設けられている。 The bracket can also be called a lower bracket, and includes a case body mounting portion and a vehicle body side mounting portion extending downward from the case body mounting portion. The case body attaching portion has four attachment holes, and the vehicle body side attaching portion is provided with two nut portions having screw holes.

そして、エアバッグ11は、図１ないし図１５に示すように、単数あるいは複数の基布を組み合わせ、例えば、正面基布部21、上側基布部22、下側基布部23の３枚の基布を縫い合わせて単一の袋状としたエアバッグ本体部である外殻部25を備えている。そして、このエアバッグ11の外殻部25は、正面基布部21の部分が、展開時に乗員Ａに接触可能に対向する乗員対向面部26となり、この乗員対向面部26を除く部分すなわち上側基布部22及び下側基布部23の部分がベース面部27となっている。そして、上側基布部22は展開時にフロントガラスに対向するいわばウインドシールド部であり、下側基布部23はインストルメントパネル部４から乗員Ａの膝部分などに対向するベース部となっている。そして、この外殻部25の前端下側すなわちベース面部27の前端下側の部分がエアバッグ基部31となり、このエアバッグ基部31がインストルメントパネル部４のケース体14に取り付けられるとともに、このエアバッグ基部31の内側にインフレータ12からガスが供給され、外殻部25が膨張展開する。そして、この外殻部25は、エアバッグ基部31からエアバッグ基部31の反対側である後端側の乗員対向面部26に向かって上下方向及び両側方向に拡開している。 As shown in FIGS. 1 to 15, the airbag 11 is a combination of one or a plurality of base fabrics. For example, the airbag 11 includes three sheets of a front base fabric portion 21, an upper base fabric portion 22, and a lower base fabric portion 23. An outer shell portion 25 which is an airbag main body portion formed by sewing a base fabric into a single bag shape is provided. The outer shell portion 25 of the airbag 11 has a front base fabric portion 21 portion which is an occupant-facing surface portion 26 that opposes the occupant A when deployed, and a portion excluding the occupant facing surface portion 26, that is, the upper base fabric The portion 22 and the lower base fabric portion 23 form a base surface portion 27. The upper base fabric portion 22 is a windshield portion facing the windshield when unfolded, and the lower base fabric portion 23 is a base portion facing the knee portion of the occupant A from the instrument panel portion 4. . The lower part of the front end of the outer shell 25, that is, the lower part of the front end of the base surface part 27 serves as an airbag base 31. The airbag base 31 is attached to the case body 14 of the instrument panel section 4, and Gas is supplied from the inflator 12 to the inside of the bag base 31, and the outer shell 25 expands and expands. The outer shell portion 25 expands in the vertical direction and the both side directions from the airbag base portion 31 toward the occupant-facing surface portion 26 on the rear end side opposite to the airbag base portion 31.

さらに、この外殻部25にはベルト32が取り付けられ、このベルト32により、内側に向かって凹設された凹設部33と、この凹設部33に対して相対的に突設された肩対向部34とが形成されている。このベルト32は、外殻部25を構成する基布と同じあるいは同様の基布製で、例えば、外殻部25を構成する基布と同じ基布を２枚重ねて帯状すなわちベルト状に形成されている。さらに、このベルト32は、図４に示すように、長手方向に沿った各部位により幅寸法が異なり、長手方向の中間部に、第１の幅寸法Ｌ1の一般部41が形成されているとともに、この一般部41に連続して、第１の幅寸法Ｌ1よりも大きい第２の幅寸法Ｌ2の幅広部42が形成されている。なお、以下、ベルト32は上下方向に延びすなわち上下方向を長手方向とし、幅広部42に対して一般部41の位置を一端側である上側とし、一般部41に対して幅広部42の位置を他端側である下側として説明する。また、幅寸法は長手方向に直交する両側方向として説明する。そして、本実施の形態では、一般部41は、一定の幅寸法に形成されている一方、幅広部42は、一般部41の下端部から徐々に幅寸法が大きくなるように形成されている。また、一般部41の上側の一端部には、一般部41より幅寸法の大きい取付部である上部取付部43が形成され、幅広部42の下側の他端部には、幅広部42の最大幅の部分と同じ幅寸法の取付部である下部取付部44が形成されている。 Further, a belt 32 is attached to the outer shell portion 25, and the belt 32 is provided with a recessed portion 33 that is recessed toward the inside, and a shoulder that protrudes relative to the recessed portion 33. A facing portion 34 is formed. The belt 32 is made of the same or similar base fabric as that constituting the outer shell portion 25. For example, two belts that are the same as the base fabric constituting the outer shell portion 25 are stacked to form a belt-like shape. ing. Further, as shown in FIG. 4, the belt 32 has a width dimension that differs depending on each part along the longitudinal direction, and a general portion 41 having a first width dimension L1 is formed at an intermediate portion in the longitudinal direction. Continuing from the general part 41, a wide part 42 having a second width dimension L2 larger than the first width dimension L1 is formed. Hereinafter, the belt 32 extends in the vertical direction, that is, the vertical direction is the longitudinal direction, the position of the general part 41 is the upper side which is one end side with respect to the wide part 42, and the position of the wide part 42 is relative to the general part 41. It demonstrates as the lower side which is the other end side. Further, the width dimension will be described as the both-side directions orthogonal to the longitudinal direction. In the present embodiment, the general part 41 is formed with a constant width dimension, while the wide part 42 is formed so that the width dimension gradually increases from the lower end of the general part 41. Further, an upper mounting portion 43 that is a mounting portion having a larger width than the general portion 41 is formed at one end portion on the upper side of the general portion 41, and the wide end portion 42 is provided at the other end portion on the lower side of the wide portion 42. A lower attachment portion 44 that is an attachment portion having the same width as the maximum width portion is formed.

そして、このベルト32は、外殻部25の外側に配置され、かつ、乗員対向面部26の幅方向の中央部に垂直に掛け渡され、すなわち上下方向に沿って配置されている。そして、上部取付部43は、環状の縫い線による接合部である上部結合部43aで外殻部25の乗員対向面部26の上側に連続する上部のベース面部27に接合され、下部取付部44は、環状の縫い線による接合部である下部結合部44aで外殻部25の乗員対向面部26の下側に連続する下部のベース面部27に接合されているとともに、一般部41から幅広部42に係る部分の一部あるいは全部ここでは一部は、環状の縫い線による接合部である中央結合部45で外殻部25の乗員対向面部26に接合されている。 The belt 32 is disposed outside the outer shell portion 25, and is stretched perpendicularly to the center portion in the width direction of the occupant facing surface portion 26, that is, disposed along the vertical direction. The upper attachment portion 43 is joined to the upper base surface portion 27 that continues to the upper side of the occupant-facing surface portion 26 of the outer shell portion 25 at the upper joint portion 43a that is a joint portion formed by an annular sewing line, and the lower attachment portion 44 is In addition, the lower joint surface 44a, which is a joint portion formed by an annular sewing line, is joined to the lower base surface portion 27 continuous to the lower side of the occupant-facing surface portion 26 of the outer shell portion 25, and from the general portion 41 to the wide portion 42. Part or all of the part is joined to the occupant-facing surface part 26 of the outer shell part 25 by a central joint part 45 that is a joint part by an annular sewing line.

さらに、このベルト32は、外殻部25の周面に沿った寸法(展開周長)より短い寸法となるようにこの外殻部25に連結され、この外殻部25の膨張展開時に乗員対向面部26の一部に外殻部25の内側に向かって凹設する凹設部33を構成する。すなわち、ベルト32を構成する基布は、外殻部25を構成する基布と全長にわたってぴったりと重ねて配置されるものではなく、上部結合部43aと中央結合部45との間の部分、及び、下部結合部44aと中央結合部45との間の部分については、ベルト32を構成する基布よりも外殻部25を構成する基布の方が寸法が大きく、各部分で外殻部25にしわが寄った状態となり、いわば主として上下の２カ所にしわ寄せ部が形成されている。言い換えれば、上部結合部43aと下部結合部44aとの間のベルト32の長手寸法は、外殻部25のベルト32を配置した部分の表面に沿った寸法より短く、この寸法差により外殻部25が押圧され、凹設部33と肩対向部34とが形成されている。 Further, the belt 32 is connected to the outer shell portion 25 so as to have a dimension shorter than the dimension along the peripheral surface of the outer shell portion 25 (deployment circumferential length), and faces the occupant when the outer shell portion 25 is inflated and deployed. A recessed portion 33 that is recessed toward the inside of the outer shell portion 25 is formed in a part of the surface portion. That is, the base fabric that constitutes the belt 32 is not arranged so as to overlap with the base fabric that constitutes the outer shell portion 25 over the entire length, but a portion between the upper joint portion 43a and the central joint portion 45, and As for the portion between the lower joint portion 44a and the central joint portion 45, the base fabric constituting the outer shell portion 25 has a larger dimension than the base fabric constituting the belt 32, and the outer shell portion 25 is in each portion. The wrinkles are in a wrinkled state, and so to speak, wrinkle portions are mainly formed at two upper and lower portions. In other words, the longitudinal dimension of the belt 32 between the upper coupling portion 43a and the lower coupling portion 44a is shorter than the dimension along the surface of the portion where the belt 32 of the outer shell portion 25 is disposed. 25 is pressed, and a recessed portion 33 and a shoulder facing portion 34 are formed.

このようにして、凹設された形状を形成しない単純な形状の外殻部25にガスが導入されて膨張展開し、乗員対向面部26が自動車２の座席３に着席した乗員Ａに接触可能に対向して展開した状態で、ベルト32により外殻部25を外側から引き絞るように押圧され、すなわち、外殻部25は、乗員対向面部26の全体からこの乗員対向面部26に近接する上下のベース面部27にかけて、外殻部25の内側すなわち自動車２の前方に向かい凹設され、すなわち幅方向の中央部に位置して上下方向に沿って溝状に凹設された凹設部33が乗員Ａに対向して形成されているとともに、この凹設部33の両側に位置し、乗員対向面部26の両側部に、外殻部25の膨張展開時に凹設部33よりも相対的に乗員Ａ側すなわち後方に膨出する突部である左右一対の肩対向部34が形成され、上側から見ていわばハート形をなすツインバッグとなっている。そして、外殻部25の膨張展開時に、座席３の所定位置にシートベルトを装着して着席した乗員Ａに対し、凹設部33は頭部及び胸部の少なくとも幅方向の中央部に対向し、肩対向部34は、乗員Ａの左右の肩部に対向する。なお、本実施の形態では、左右の肩対向部34は、互いに連通した同一の気室により構成されている。 In this way, gas is introduced into the simple outer shell portion 25 that does not form the recessed shape and expands and expands, so that the occupant facing surface portion 26 can contact the occupant A seated on the seat 3 of the automobile 2. In an unfolded state, the outer shell portion 25 is pressed by the belt 32 so as to be drawn from the outside.In other words, the outer shell portion 25 is moved up and down close to the passenger facing surface portion 26 from the entire passenger facing surface portion 26. An occupant is provided with a recessed portion 33 that is recessed toward the inside of the outer shell portion 25, that is, toward the front of the automobile 2, over the base surface portion 27, that is, in the center portion in the width direction and recessed in a groove shape along the vertical direction. The occupant A is located opposite to the recessed portion 33 and is located on both sides of the occupant facing surface portion 26. The occupant A is relatively located on both sides of the occupant facing surface portion 26 relative to the recessed portion 33 when the outer shell 25 is inflated and deployed. A pair of left and right shoulder facing portions 34, which are protrusions that bulge to the side, that is, the rear are formed, and the upper side So to speak with twin bag that forms the heart-shaped look, et al. When the outer shell 25 is inflated and deployed, the recessed portion 33 faces at least the center of the head and the chest in the width direction with respect to the occupant A who is seated with a seat belt attached to a predetermined position of the seat 3. The shoulder facing portion 34 faces the left and right shoulder portions of the occupant A. In the present embodiment, the left and right shoulder facing portions 34 are configured by the same air chamber communicating with each other.

さらに、ベルト32には、一般部41及び幅広部42が形成され、一般部41は、頭部対向部で乗員Ａの頭部に対向して配置され、幅広部42は、胸部対向部で乗員Ａの胸部に対向して配置されている。そこで、外殻部25の膨張展開時にベルト32により形成される凹設部33についても、一般部41及び幅広部42により凹部範囲が制御され、互いに幅寸法の異なる一般凹設部51及び幅広凹設部52が形成され、幅寸法が比較的小さい一般凹設部51が乗員Ａの頭部に対向し、幅寸法が比較的大きい幅広凹設部52が乗員Ａの胸部に対向するようになっている。 Further, the belt 32 is formed with a general part 41 and a wide part 42. The general part 41 is disposed so as to face the head of the occupant A at the head facing part, and the wide part 42 is occupant at the chest facing part. It is arranged to face the chest of A. Therefore, the concave portion 33 formed by the belt 32 when the outer shell portion 25 is inflated and deployed is also controlled by the general portion 41 and the wide portion 42, and the general concave portion 51 and the wide concave portion having different width dimensions. The general recessed portion 51 having a relatively small width is opposed to the head of the occupant A, and the wide recessed portion 52 having a relatively large width is opposed to the chest of the occupant A. ing.

また、エアバッグ11の外殻部25については、種々の構成を採り得るものであるが、本実施の形態では、上記のように、正面基布部21、上側基布部22、下側基布部23の３枚の基布を縫い合わせて構成されており、例えば、図９に示すように切り出した３枚の基布部21，22，23の縁部同士を縫製部54で縫い合わせて袋状に形成し、また、この外殻部25の形成後に、あるいは外殻部25の形成時に、図１に示すようにベルト32を取り付けて、エアバッグ11を構成している。 The outer shell portion 25 of the airbag 11 can have various configurations. In the present embodiment, as described above, the front base fabric portion 21, the upper base fabric portion 22, the lower base portion, and the like. The three base fabrics of the cloth part 23 are stitched together. For example, the edges of the three base cloth parts 21, 22, 23 cut out as shown in FIG. The air bag 11 is configured by attaching a belt 32 as shown in FIG. 1 after the outer shell portion 25 is formed or at the time of forming the outer shell portion 25.

なお、この実施の形態では、正面基布部21は、図７及び図１０に示すように、上下方向に沿った正面中央部21aが正面両側部21bの乗員Ａ側に位置するように一部が折り重ねられ、深く凹設可能な凹設部33の形成が容易になっている。また、正面基布部21の内側には、図５及び図６に示すように、正面基布部21の両側への広がりを規制する正面補助基布55が配置されている。さらに、下側基布部23のエアバッグ基部31には、図５及び図８に示すように、２個のインフレータ12の本体部を受け入れ可能なガス導入口57が形成され、上側基布部22の両側部には、円孔状をなしガスを排気可能な排気口58が形成されている。さらに、外殻部25にはガス導入口57及び排気口58の位置などに、防炎布あるいはパッチなどとも呼ばれる基布である補助基布61，62が重ねられ、上側基布部22及び下側基布部23などに縫合して取り付けられている。 In this embodiment, as shown in FIGS. 7 and 10, a part of the front base fabric portion 21 is positioned so that the front center portion 21a along the vertical direction is located on the occupant A side of the front side portions 21b. As a result, the recessed portion 33 that can be deeply recessed is easily formed. Further, as shown in FIGS. 5 and 6, a front auxiliary base fabric 55 that restricts the spread of the front base fabric portion 21 to both sides is disposed inside the front base fabric portion 21. Further, the airbag base 31 of the lower base fabric portion 23 is formed with a gas inlet 57 that can receive the main body portions of the two inflators 12, as shown in FIGS. Exhaust ports 58 that have a circular hole shape and can exhaust gas are formed on both sides of 22. Further, auxiliary base fabrics 61 and 62, which are also referred to as flameproof cloths or patches, are overlaid on the outer shell 25 at the positions of the gas introduction port 57 and the exhaust port 58, etc. It is attached to the side base cloth part 23 by sewing.

そして、エアバッグ装置１の組立工程は、まず、エアバッグ11の外殻部25の内側にリテーナを挿入し、このリテーナのスタッドボルトをエアバッグ11に設けた取付孔から引き出した状態で、エアバッグ11を所定の形状に折り畳む。次いで、このエアバッグ11をケース体14のエアバッグ収納部に収納するとともに、リテーナのスタッドボルトをケース体14の底部の取付孔に挿入する。そして、このリテーナのスタッドボルトに下側からインフレータ12のフランジ部の取付孔を挿入するとともに、インフレータ12の本体部の上側部をケース体14の底部の円孔及びエアバッグ11のエアバッグ基部31のガス導入口57に挿入する。さらに、リテーナのスタッドボルトにブラケットの取付孔を挿入する。次いで、各スタッドボルトにナットを螺合して締め付けることにより、ケース体14に、エアバッグ11、インフレータ12、リテーナ、及びブラケットが取り付けられる。さらに、ケース体14にカバー体を被せカバー取付部に係止することにより、エアバッグ装置１のユニットが組み立てられる。 In the assembly process of the airbag device 1, first, a retainer is inserted inside the outer shell portion 25 of the airbag 11, and the stud bolt of the retainer is pulled out from a mounting hole provided in the airbag 11. The bag 11 is folded into a predetermined shape. Next, the airbag 11 is stored in the airbag storage portion of the case body 14, and the stud bolt of the retainer is inserted into the attachment hole in the bottom portion of the case body 14. Then, a mounting hole for the flange portion of the inflator 12 is inserted into the retainer stud bolt from below, and the upper portion of the main body portion of the inflator 12 is connected to the circular hole in the bottom portion of the case body 14 and the airbag base portion 31 of the airbag 11. Is inserted into the gas inlet 57. Further, the bracket mounting holes are inserted into the stud bolts of the retainer. Next, the airbag 11, the inflator 12, the retainer, and the bracket are attached to the case body 14 by screwing and fastening a nut to each stud bolt. Further, the unit of the airbag device 1 is assembled by covering the case body 14 with the cover body and locking it to the cover mounting portion.

そして、このエアバッグ装置１は、ケース体14の側部ブラケットの孔部及びブラケットのナット部などを用いて車両のステアリングメンバなどの部材に連結固定され、自動車２のインストルメントパネル部４に取り付けられ、さらに、センサなどを備えた制御装置に電気的に接続して、エアバッグ装置１が構成され、助手席に対向するインストルメントパネル部４の内部にエアバッグ11が折り畳んで収納された状態となる。 The airbag device 1 is connected and fixed to a member such as a steering member of a vehicle using a hole portion of a side bracket of the case body 14 and a nut portion of the bracket, and attached to the instrument panel portion 4 of the automobile 2. In addition, the airbag device 1 is configured by being electrically connected to a control device including a sensor and the like, and the airbag 11 is folded and housed inside the instrument panel portion 4 facing the passenger seat. It becomes.

次に、このエアバッグ装置１の展開動作を説明する。 Next, a deployment operation of the airbag device 1 will be described.

自動車２の衝突などの際に、センサが検出した乗員Ａの状態に応じて制御装置が衝突信号を発してインフレータ12を１個あるいは２個作動させ、各インフレータ12のガス噴射口からガスを噴射させる。すると、このエアバッグ11の外殻部25はガスの流入に伴い膨張展開し、カバー体のテアラインを破断して突出口から突出し、直接に、あるいはフロントガラスに沿って、後方の乗員Ａ側に向かって膨張展開し、図２及び図３に示すように、助手席に着席した乗員Ａの上半身の前方に乗員対向面部26を対向させて展開し、この乗員対向面部26を乗員Ａに当接して乗員Ａを拘束して受け止め、乗員Ａを衝突の衝撃から保護する。 In the event of a collision of the automobile 2, the control device generates a collision signal in accordance with the state of the occupant A detected by the sensor, operates one or two inflators 12, and injects gas from the gas injection ports of each inflator 12. Let Then, the outer shell portion 25 of the airbag 11 is inflated and deployed as the gas flows in, breaks the tear line of the cover body and protrudes from the protruding port, and directly or along the windshield toward the rear passenger A 2 and 3, the occupant-facing surface portion 26 is deployed in front of the upper half of the occupant A seated in the passenger seat, and the occupant-facing surface portion 26 is brought into contact with the occupant A. The passenger A is restrained and received, and the passenger A is protected from the impact of the collision.

ここで、エアバッグ11は、凹設部33が乗員Ａの頭部及び胸部の幅方向の中央部に対向し、肩対向部34は、乗員Ａの左右の肩部に対向する。そこで、肩対向部34が乗員Ａの左右の肩部に当接し、乗員Ａをしっかりと受け止めて適切に保護できる。一方、乗員Ａの頭部及び胸部については、乗員Ａからみて凹設された凹設部33が設けられているため、乗員Ａの頭部及び胸部を柔らかく受け止めて適切に保護できる。 Here, in the airbag 11, the recessed portion 33 faces the center of the occupant A's head and chest in the width direction, and the shoulder facing portion 34 faces the left and right shoulders of the occupant A. Therefore, the shoulder facing portion 34 abuts against the left and right shoulders of the occupant A, and the occupant A can be firmly received and appropriately protected. On the other hand, since the occupant A's head and chest are provided with a recessed portion 33 that is recessed when viewed from the occupant A, the occupant A's head and chest can be softly received and appropriately protected.

さらに、凹設部33は、ベルト32により幅寸法が制御され、幅寸法が比較的小さい一般凹設部51が乗員Ａの頭部に対向し、幅寸法が比較的大きい幅広凹設部52が乗員Ａの胸部に対向する。そこで、そこで、凹設部33は、図２(a)に示すように、頭部を拘束する部分では、頭部の幅の略Ｖ字状に展開し、頭部を横方向からの圧縮力で挟み込むように拘束して、頭部の移動を抑制して適切に保護できる。一方、図２(b)に示すように、胸部に対向する部分では、凹設部33は略Ｕ字状に広がり、力は両側の肩対向部34に振り分け、肩対向部34が乗員Ａの肩部に当接した状態とし、シートベルトに拘束された胸部は柔らかく受け止めて、あるいは凹設部33が胸部に接触すなわち押圧しない状態として、胸部に力が加わりすぎない状態で適切に保護できる。 Further, the width of the concave portion 33 is controlled by the belt 32, the general concave portion 51 having a relatively small width dimension faces the head of the occupant A, and the wide concave portion 52 having a relatively large width dimension is provided. Opposite the occupant A's chest. Therefore, as shown in FIG. 2 (a), the recessed portion 33 is developed in a substantially V shape with the width of the head at the portion constraining the head, and the head is compressed in the lateral direction. By restraining so as to be sandwiched by the head, the movement of the head can be suppressed and appropriately protected. On the other hand, as shown in FIG. 2 (b), in the portion facing the chest, the recessed portion 33 spreads in a substantially U shape, the force is distributed to the shoulder facing portions 34 on both sides, and the shoulder facing portion 34 is located on the occupant A's side. The chest part restrained by the seat belt in a state where it is in contact with the shoulder part can be properly received in a state where the chest part is softly received, or the recessed part 33 is not in contact with the chest part, that is, not pressed.

このように、本実施の形態によれば、助手席用のエアバッグ装置１について、エアバッグ11の外殻部25内にガスを導入すると、乗員対向面部26が乗員Ａに接触可能に対向して外殻部25が膨張展開し、左右の肩対向部34が乗員Ａの左右の肩部に対向して乗員Ａを確実に拘束するとともに、凹設部33が乗員Ａの頭部及び胸部に対向し柔らかく拘束し、乗員Ａを適切に保護できる。 Thus, according to the present embodiment, when the gas is introduced into the outer shell portion 25 of the airbag 11 in the airbag device 1 for the passenger seat, the occupant facing surface portion 26 faces the occupant A so as to be in contact with the occupant A. The outer shell portion 25 is inflated and deployed, and the left and right shoulder facing portions 34 are opposed to the left and right shoulder portions of the occupant A to securely restrain the occupant A, and the recessed portion 33 is formed on the head and chest of the occupant A. Opposing and restraining softly, occupant A can be protected appropriately.

さらに、乗員対向面部26に、乗員Ａに対向して互いに幅寸法の異なる一般凹設部51及び幅広凹設部52を設けた凹設部33を設けたため、乗員Ａを適切に保護できる。すなわち、凹設部33には、乗員Ａの頭部に対向する一般凹設部51と、この一般凹設部51より幅寸法が大きく乗員Ａの胸部に対向する幅広凹設部52を備えている。そこで、一般凹設部51により乗員Ａの頭部を肩部より柔らかく、かつ、一般凹設部51に挟み込むようにして拘束でき、一方、幅広凹設部52により乗員Ａの胸部を頭部よりさらに柔らかく拘束して乗員Ａを適切に保護できる。 Furthermore, the occupant-facing surface portion 26 is provided with the recessed portion 33 provided with the general recessed portion 51 and the wide recessed portion 52 that are opposed to the occupant A and have different width dimensions. That is, the recessed portion 33 includes a general recessed portion 51 that faces the occupant A's head and a wide recessed portion 52 that is larger in width than the general recessed portion 51 and faces the chest of the occupant A. Yes. Therefore, the head of the occupant A is softer than the shoulder by the general recessed portion 51 and can be restrained by being sandwiched between the general recessed portions 51, while the chest of the occupant A is separated from the head by the wide recessed portion 52. Further, the passenger A can be properly protected by being restrained softly.

そして、凹設部33は、外殻部25の外側にベルト32を配置し、このベルト32を外殻部25の周面に沿った寸法より短い寸法となるようにこの外殻部25に連結することにより容易に形成できる。 The recessed portion 33 has a belt 32 disposed outside the outer shell portion 25, and the belt 32 is connected to the outer shell portion 25 so as to be shorter than the size along the peripheral surface of the outer shell portion 25. By doing so, it can be formed easily.

さらに、凹設部33の一般凹設部51及び幅広凹設部52は、ベルト32の幅寸法の設定により容易に形成でき、すなわち、乗員Ａの頭部に対向してベルト32に形成した一般部41と一般部41より幅寸法が大きく乗員Ａの胸部に対向して配置された幅広部42とにより所望の幅寸法で容易に形成でき、製造コストを低減できる。また、ベルト32の幅寸法の設定により、一般凹設部51及び幅広凹設部52の位置や幅寸法を自在に設定でき、いわばエアバッグ11の凹設部33の溝幅のチューニングも容易にでき、同一の外殻部25を用いて異なる展開特性を備えたエアバッグ11を構成でき、汎用性を向上して製造コストを低減できる。このように、拘束部範囲を最適化したツインバッグを容易に形成でき、いわばエアバッグ11の外側から巻き付けるベルト32の幅を変化させて２つ割れバッグの下部あるいは下端部を幅広にした理想形状を安価に提供できる。 Further, the general concave portion 51 and the wide concave portion 52 of the concave portion 33 can be easily formed by setting the width dimension of the belt 32, that is, the general concave portion formed on the belt 32 facing the head of the occupant A. The part 41 and the wide part 42 having a larger width dimension than the general part 41 and disposed opposite the chest of the occupant A can be easily formed with a desired width dimension, and the manufacturing cost can be reduced. In addition, by setting the width dimension of the belt 32, the position and width dimension of the general recessed portion 51 and the wide recessed portion 52 can be freely set, so that the groove width of the recessed portion 33 of the airbag 11 can be easily tuned. In addition, the airbag 11 having different deployment characteristics can be configured using the same outer shell portion 25, so that versatility can be improved and manufacturing cost can be reduced. In this way, it is possible to easily form a twin bag with an optimized restraint area, so to speak, an ideal shape with the lower or lower end of the two-fold bag widened by changing the width of the belt 32 wound from the outside of the airbag 11 Can be provided at low cost.

そして、エアバッグ11の外殻部25は単純な凹凸を有さない袋状に形成できるため、複雑な形状の基布(パネル)を組み合わせて凹凸を有する立体的な袋体を形成する構成が不要で構成を簡略化できるとともに、強度的に補強を要する応力集中部も生じず、いわばバッグ耐力の低下もなく、補強布の設定やメインパネルである各基布部21，22，23自体を厚手基布に変更することなどの対策が不要であり、さらに、外殻部25の内側に複数のベルトを配置する必要もなく、製造コストを低減できとともに、小形化、軽量化も容易に実現できる。 And since the outer shell portion 25 of the airbag 11 can be formed into a bag shape having no simple unevenness, a structure in which a three-dimensional bag body having unevenness is formed by combining a base fabric (panel) having a complicated shape. The structure can be simplified with no need, and there is no stress concentration part requiring reinforcement in strength, so there is no reduction in bag strength, so the setting of the reinforcing cloth and each base cloth part 21, 22, 23 itself that is the main panel There is no need to take measures such as changing to a thicker base fabric. In addition, there is no need to place multiple belts inside the outer shell 25, reducing manufacturing costs and making it easier to reduce size and weight. it can.

なお、上記の実施の形態では、ベルト32は、乗員Ａの頭部に対向して一定の幅寸法の一般部41と、一般部41から拡開状に幅寸法が大きくなり乗員Ａの胸部に対向する幅広部42とを形成したが、この構成に限られない。例えば、シートベルトなどの他の乗員保護装置などとの関係で、エアバッグ11から乗員Ａに加わる力を小さくしたい部分に対して、一般部41よりも幅寸法の大きい幅広部42を配置して幅広凹設部52を形成し、乗員Ａを容易に適切に保護できる。 In the above-described embodiment, the belt 32 faces the occupant A's head, the general portion 41 having a certain width dimension, and the width dimension increases from the general portion 41 so as to expand to the occupant's A chest. Although the opposing wide portions 42 are formed, the present invention is not limited to this configuration. For example, in relation to other occupant protection devices such as a seat belt, a wide portion 42 having a width dimension larger than that of the general portion 41 is arranged for a portion where the force applied to the occupant A from the airbag 11 is desired to be reduced. The wide recessed portion 52 is formed, and the occupant A can be easily and appropriately protected.

また、エアバッグ11の外殻部25の基布の構成は、上記の構成に限られず、他の構成を採ることもできる。例えば、上記の３枚の基布部21，22，23を用いたいわゆる立体３ピースの構成に限られず、上下の２枚の基布を接合したいわゆる立体２ピースの構成とすることもできる。 Further, the configuration of the base fabric of the outer shell portion 25 of the airbag 11 is not limited to the above configuration, and other configurations can be adopted. For example, the configuration is not limited to the so-called three-piece three-piece configuration using the three base cloth portions 21, 22, and 23, but may be a so-called three-piece two-piece configuration in which two upper and lower base fabrics are joined.

さらに、助手席乗員用のエアバッグ11に限られず、例えば、前席の座席の後部から、後席の座席の乗員の上体に向かって展開するエアバッグ11に適用することもできる。 Furthermore, the airbag 11 is not limited to the passenger seat occupant airbag 11, and can be applied to the airbag 11 that is deployed from the rear portion of the front seat toward the upper body of the occupant in the rear seat.

本発明は、例えば、車両の助手席乗員用のエアバッグ装置のエアバッグに適用できる。 The present invention can be applied, for example, to an airbag of an airbag device for a passenger in a passenger seat of a vehicle.

２車両としての自動車
３座席
11 エアバッグ
25 外殻部
26 乗員対向面部
27 ベース面部
32 ベルト
33 凹設部
34 肩対向部
41 一般部
42 幅広部
51 一般凹設部
52 幅広凹設部
Ａ乗員 2 Car as a vehicle 3 Seat
11 Airbag
25 Outer shell
26 Passenger facing surface
27 Base surface
32 belts
33 Recessed part
34 Shoulder facing part
41 General Department
42 Wide part
51 General recess
52 Wide recessed part A Crew

Claims

A bag-like outer shell portion that expands and expands when gas is introduced;
An occupant-facing surface portion that is provided in a part of the outer shell portion and faces the occupant so as to come into contact with the occupant when the outer shell portion is inflated and deployed;
The belt is formed with a general part and a wide part having a larger width than the general part, and is arranged outside the outer shell part and is shorter than the dimension along the peripheral surface of the outer shell part. A general recessed portion that is connected to the outer shell portion and is recessed toward the inside of the outer shell portion at a part of the occupant-facing surface portion when the outer shell portion is inflated and deployed, and facing the occupant and having different width dimensions. An airbag comprising: a belt that forms a recessed portion provided with a wide recessed portion.

The occupant-facing surface portion is deployed facing the occupant seated in the vehicle seat,
The belt is disposed on the occupant-facing surface portion along the vertical direction, the general portion is disposed to face the occupant's head, and the wide portion is disposed to face the occupant's chest. The airbag according to claim 1.

A base surface portion constituting a portion excluding the occupant facing surface portion of the outer shell portion is provided,
The belt is disposed along a center portion in the width direction of the occupant facing surface portion, and is connected to the base surface portion continuing above the occupant facing surface portion and the base surface portion continuing below the occupant facing surface portion. And
When the outer shell portion is inflated and deployed, the recessed portions are continuously provided from the occupant-facing surface portion to the upper and lower portions of the base surface portion so as to face the occupant's head and chest, and on both sides of the recessed portion. The airbag according to claim 2, wherein left and right shoulder facing portions that are positioned and project relatively toward the occupant side than the recessed portion are opposed to the left and right shoulder portions of the occupant.