JP2013216211A - Side airbag apparatus - Google Patents

Side airbag apparatus Download PDF

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Publication number
JP2013216211A
JP2013216211A JP2012088744A JP2012088744A JP2013216211A JP 2013216211 A JP2013216211 A JP 2013216211A JP 2012088744 A JP2012088744 A JP 2012088744A JP 2012088744 A JP2012088744 A JP 2012088744A JP 2013216211 A JP2013216211 A JP 2013216211A
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Prior art keywords
airbag
pair
occupant
dimensional shape
side airbag
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JP2012088744A
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Japanese (ja)
Inventor
Hidetaka Azuma
英孝 東
Katsunori Imai
克典 今井
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Ashimori Industry Co Ltd
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Ashimori Industry Co Ltd
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Priority to JP2012088744A priority Critical patent/JP2013216211A/en
Priority to PCT/JP2013/058297 priority patent/WO2013153933A1/en
Publication of JP2013216211A publication Critical patent/JP2013216211A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/239—Inflatable members characterised by their venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
    • B60R2021/23146—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection seat mounted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/235—Inflatable members characterised by their material
    • B60R2021/23571—Inflatable members characterised by their material characterised by connections between panels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

PROBLEM TO BE SOLVED: To enable an airbag of a side airbag apparatus to be deployed stably even in a vehicle having a narrow space between an occupant and a side wall.SOLUTION: An occupant 90 is protected between the occupant 90 and a side wall of a vehicle owing to an airbag 10 that protects a human body 92 below a shoulder 91 inclusive. The airbag 10 has an expansion portion 17 formed by joining opposed base cloths 12, 13 and a three-dimensional-shaped portion 22. The opposed base cloths 12, 13 are formed at a partially overlapping position in each peripheral edge portion 15, and have a pair of notches joined when stretched in a thickness direction of the expansion portion 17. The three-dimensional-shaped portion 22 is located at a peripheral edge 19 of the expansion portion 17, and is formed in a three-dimensional manner in the thickness direction of the expansion portion 17 by the pair of joined notches.

Description

本発明は、車両内に搭載され、エアバッグにより乗員を保護するサイドエアバッグ装置に関する。   The present invention relates to a side airbag device that is mounted in a vehicle and protects an occupant with an airbag.

車両の緊急時や衝突時に、シートに着座した乗員を保護するため、シートの側部に搭載されるサイドエアバッグ装置が使用されている。サイドエアバッグ装置では、乗員と車両の側壁（例えば、ドアトリム）の間に膨張展開するエアバッグにより、乗員が受け止められて、乗員への衝撃が吸収される。その際、乗員を確実に保護するためには、エアバッグを、乗員又は側壁に引っ掛かることなく、乗員の側方に正確に展開する必要がある。これに対し、従来、乗員と側壁の間の空間に合わせて、偏平な直方体に形成されたエアバッグが知られている（特許文献１参照）。   In order to protect an occupant seated on a seat in a vehicle emergency or a collision, a side airbag device mounted on a side portion of the seat is used. In the side airbag device, an occupant is received by an airbag that is inflated and deployed between the occupant and a side wall (for example, a door trim) of the vehicle, and an impact to the occupant is absorbed. At that time, in order to reliably protect the occupant, it is necessary to accurately deploy the airbag to the side of the occupant without being caught by the occupant or the side wall. On the other hand, the airbag formed in the flat rectangular parallelepiped conventionally according to the space between a passenger | crew and a side wall is known (refer patent document 1).

この従来のエアバッグでは、膨張の厚さが制限されるため、エアバッグが乗員又は側壁に引っ掛かるのが抑制される。しかしながら、エアバッグが乗員の肩から腰部までの広い領域に展開するため、乗員と側壁の間隔によっては、展開中のエアバッグが乗員の肩に引っ掛かる虞がある。   In this conventional airbag, since the expansion thickness is limited, the airbag is restrained from being caught on the occupant or the side wall. However, since the airbag is deployed in a wide area from the shoulder to the waist of the occupant, the airbag being deployed may be caught on the occupant's shoulder depending on the distance between the occupant and the side wall.

即ち、乗員と側壁の間が狭い車両では、肩と側壁の間の空間が狭くなるため、エアバッグが肩と側壁の間に展開するのが困難になり、エアバッグが肩に引っ掛かる虞がある。また、展開中のエアバッグが乗員の上腕に引っ掛かり、上腕を大きく跳ね上げることもある。その結果、エアバッグの安定した展開が妨げられて、エアバッグが有する衝撃吸収特性に影響が生じる虞もある。加えて、エアバッグが肩の側方まで展開したとしても、エアバッグの肩を受け止める部分は充分な厚さに膨張せず、かつ、エアバッグが肩まで展開することで、エアバッグの胸部を受け止める部分の膨張が遅れることもある。これに伴い、エアバッグの乗員に対する衝撃吸収特性が、充分に発揮されない虞がある。従って、従来のエアバッグに関しては、乗員の衝撃をより確実に吸収する観点から、改良の余地がある。   That is, in a vehicle where the space between the occupant and the side wall is narrow, the space between the shoulder and the side wall becomes narrow, so that it is difficult for the airbag to be deployed between the shoulder and the side wall, and the air bag may be caught on the shoulder. . In addition, the airbag that is being deployed may be caught on the occupant's upper arm, causing the upper arm to jump significantly. As a result, the stable deployment of the airbag is hindered, and there is a possibility that the impact absorption characteristics of the airbag may be affected. In addition, even if the airbag expands to the side of the shoulder, the portion that receives the shoulder of the airbag does not expand to a sufficient thickness, and the airbag expands to the shoulder, so that the chest of the airbag The expansion of the catching part may be delayed. Along with this, there is a possibility that the impact absorption characteristics of the airbag to the passenger are not sufficiently exhibited. Therefore, with respect to the conventional airbag, there is room for improvement from the viewpoint of more reliably absorbing the occupant's impact.

特開平８−１９２７１２号公報JP-A-8-192712

本発明は、前記従来の問題に鑑みなされたもので、その目的は、乗員と側壁の間が狭い車両であっても、サイドエアバッグ装置が備えるエアバッグを安定して展開して、エアバッグの衝撃吸収特性を確実に発揮させることである。   The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to stably deploy an airbag provided in a side airbag device even in a vehicle having a narrow space between an occupant and a side wall. It is to make sure that the shock absorption characteristics of the material are exhibited.

本発明は、シートに着座した乗員と車両の側壁の間において乗員を保護するサイドエアバッグ装置であって、ガスを発生するインフレータと、ガスにより膨張展開して乗員の肩より下の胴体を保護するエアバッグを備え、エアバッグが、対向する基布を接合して形成された膨張部と、対向する基布の周縁部の一部に形成されて膨張部の周縁部に位置する立体形状部を有し、エアバッグの対向する基布が、各周縁部の一部において重なり合う位置に形成され、膨張部の厚さ方向に伸ばした状態で接合された一対の切欠き部を有し、エアバッグの立体形状部が、接合された一対の切欠き部により膨張部の厚さ方向に立体的に形成されたサイドエアバッグ装置である。   The present invention relates to a side airbag device that protects an occupant between an occupant seated on a seat and a side wall of a vehicle. The inflator generates gas, and inflates and deploys the gas to protect the trunk below the occupant's shoulder. An inflatable portion formed by joining opposing base fabrics, and a three-dimensional shape portion formed at a part of the peripheral portion of the opposing base fabric and positioned at the peripheral portion of the inflatable portion And a pair of notch portions that are formed in positions where the opposing fabrics of the airbag are overlapped at a part of each peripheral portion and are stretched in the thickness direction of the inflating portion. In the side airbag device, the three-dimensionally shaped portion of the bag is three-dimensionally formed in the thickness direction of the inflatable portion by a pair of joined notches.

本発明によれば、乗員と側壁の間が狭い車両であっても、サイドエアバッグ装置が備えるエアバッグを安定して展開することができる。また、エアバッグの衝撃吸収特性を確実に発揮させることができる。   ADVANTAGE OF THE INVENTION According to this invention, even if it is a vehicle with narrow space between a passenger | crew and a side wall, the airbag with which a side airbag apparatus is provided can be expand | deployed stably. In addition, the impact absorption characteristics of the airbag can be reliably exhibited.

本実施形態のサイドエアバッグ装置を搭載したシートの側面図である。It is a side view of the sheet | seat which mounts the side airbag apparatus of this embodiment. 図１のＸ方向からみた乗員とエアバッグの正面図である。It is a front view of the passenger | crew and an airbag seen from the X direction of FIG. エアバッグの製造手順を示す図である。It is a figure which shows the manufacture procedure of an airbag. エアバッグに立体形状部を形成する手順を示す図である。It is a figure which shows the procedure which forms a solid-shaped part in an airbag. 膨張後のエアバッグの側面図である。It is a side view of the airbag after expansion | swelling. 膨張後のエアバッグの斜視図である。It is a perspective view of the airbag after expansion | swelling. 他の実施形態の立体形状部を示す図である。It is a figure which shows the solid-shaped part of other embodiment. 他の実施形態の立体形状部を示す図である。It is a figure which shows the solid-shaped part of other embodiment. 他の実施形態の立体形状部を示す図である。It is a figure which shows the solid-shaped part of other embodiment. 他の実施形態の立体形状部を示す図である。It is a figure which shows the solid-shaped part of other embodiment. 他の実施形態の立体形状部を示す図である。It is a figure which shows the solid-shaped part of other embodiment. 複数の立体形状部を有するエアバッグを示す図である。It is a figure which shows the airbag which has a some solid-shaped part.

本発明のサイドエアバッグ装置の一実施形態について図面を参照して説明する。
本実施形態のサイドエアバッグ装置は、車両内に搭載され、シートに着座した乗員と車両の側壁の間において乗員を保護する乗員保護装置である。乗員は、側壁に沿って膨張展開するエアバッグにより、受け止められて保護される。 An embodiment of a side airbag device of the present invention will be described with reference to the drawings.
The side airbag device of the present embodiment is an occupant protection device that is mounted in a vehicle and protects the occupant between an occupant seated on a seat and a side wall of the vehicle. The occupant is received and protected by an airbag that inflates and deploys along the side wall.

図１は、本実施形態のサイドエアバッグ装置１を搭載したシート８０の側面図であり、車両外側から見たシート８０と乗員９０を示している。また、図１では、展開したエアバッグ１０、シート８０、及び、乗員９０を重ねて示す。
図２は、図１のＸ方向からみた乗員９０とエアバッグ１０の正面図であり、シート８０の一部と車両の側壁８５の一部も示す。側壁８５は、例えば、車両内の側面に設けられたドアトリムや窓（図２ではドアトリム）からなる。 FIG. 1 is a side view of a seat 80 on which the side airbag device 1 of the present embodiment is mounted, and shows the seat 80 and an occupant 90 as seen from the outside of the vehicle. In FIG. 1, the deployed airbag 10, the seat 80, and the occupant 90 are shown in a stacked manner.
FIG. 2 is a front view of the occupant 90 and the airbag 10 as viewed from the X direction in FIG. 1 and also shows a part of the seat 80 and a part of the side wall 85 of the vehicle. The side wall 85 includes, for example, a door trim or a window (a door trim in FIG. 2) provided on a side surface in the vehicle.

なお、図１では、右方が車両における前方であり、左方が車両における後方である。ここでは、車両における前方、後方、上方、下方を、それぞれ前方、後方、上方、下方という。また、車両における前後方向、上下方向を、それぞれ前後方向、上下方向といい、車両の幅方向を幅方向という。   In FIG. 1, the right side is the front in the vehicle, and the left is the rear in the vehicle. Here, the front, the back, the upper, and the lower in the vehicle are referred to as the front, the rear, the upper, and the lower, respectively. Further, the front-rear direction and the vertical direction in the vehicle are referred to as the front-rear direction and the vertical direction, respectively, and the width direction of the vehicle is referred to as the width direction.

シート８０は、車両用の各種シート（運転席、助手席、後部席等）であり、図示のように、乗員９０が座るシートクッション８１と、乗員９０の背面に位置するシートバック８２と、ヘッドレスト８３を有する。作動前のサイドエアバッグ装置１は、シート８０の側部８４に搭載され、側部８４内でシート８０（例えば、シートフレーム）に固定される。シート８０の側部８４は、シートバック８２の幅方向外側部分であり、サイドエアバッグ装置１の収容部（図示せず）を有する。サイドエアバッグ装置１は、シートバック８２の収容部内に収容された状態で、乗員９０に対して、後方に、かつ、幅方向外側（側壁８５側）に位置する。   The seat 80 is a variety of vehicle seats (driver's seat, passenger seat, rear seat, etc.), as shown, a seat cushion 81 on which the occupant 90 sits, a seat back 82 located on the back of the occupant 90, and a headrest 83. The side airbag device 1 before operation is mounted on the side portion 84 of the seat 80 and is fixed to the seat 80 (for example, a seat frame) within the side portion 84. The side portion 84 of the seat 80 is an outer portion in the width direction of the seat back 82 and has a housing portion (not shown) of the side airbag device 1. The side airbag device 1 is positioned rearwardly and on the outer side in the width direction (side wall 85 side) with respect to the occupant 90 in a state of being accommodated in the accommodating portion of the seat back 82.

サイドエアバッグ装置１は、袋状のエアバッグ（サイドエアバッグ）１０と、ボルトからなる２つの固定部材２と、筒状のインフレータ３（点線で示す）を備えている。エアバッグ１０は、膨張展開可能に折り畳まれた状態でシート８０の側部８４（収容部）内に収容される。エアバッグ１０とインフレータ３は、インフレータ３に取り付けられた固定部材２により、側部８４に固定される。   The side airbag device 1 includes a bag-shaped airbag (side airbag) 10, two fixing members 2 made of bolts, and a cylindrical inflator 3 (shown by a dotted line). The airbag 10 is accommodated in the side portion 84 (accommodating portion) of the seat 80 in a state of being folded so as to be inflated and deployed. The airbag 10 and the inflator 3 are fixed to the side portion 84 by the fixing member 2 attached to the inflator 3.

インフレータ３は、シリンダタイプのガス発生装置であり、エアバッグ１０内に配置された状態で、エアバッグ１０とともにシート８０の側部８４内に収容される。車両緊急時や衝撃検知時には、車両の指示装置（図示せず）から受信した作動指示信号に応じて、インフレータ３が作動して、エアバッグ１０内でガスを発生する。このガスが折り畳まれたエアバッグ１０内に供給されて、エアバッグ１０が側壁８５に沿って膨張展開する。また、エアバッグ１０は、シート８０に着座した乗員９０と側壁８５の間の側方空間８６において膨張展開して、側方空間８６において乗員９０を保護する。   The inflator 3 is a cylinder type gas generator, and is housed in the side portion 84 of the seat 80 together with the airbag 10 while being disposed in the airbag 10. In the event of a vehicle emergency or impact detection, the inflator 3 operates in response to an operation instruction signal received from a vehicle instruction device (not shown) to generate gas in the airbag 10. This gas is supplied into the folded airbag 10, and the airbag 10 is inflated and deployed along the side wall 85. The airbag 10 is inflated and deployed in the side space 86 between the occupant 90 seated on the seat 80 and the side wall 85 to protect the occupant 90 in the side space 86.

膨張展開時には、まず、エアバッグ１０は、シート８０の側部８４からシート８０の外（車室）に飛び出し、膨張しつつ側方空間８６に向かって展開する。次に、エアバッグ１０が、シートバッグ８２の前方に展開しながら上下方向に展開し、エアバッグ１０の全体が、乗員９０と側壁８５の間で膨張展開する。その状態で、乗員９０は、エアバッグ１０により受け止められて保護される。また、エアバッグ１０内のガスが、エアバッグ１０のベントホール１１から排出（図１の矢印Ｇ）されることで、乗員９０の衝撃が緩和される。   At the time of inflation and deployment, the airbag 10 first jumps out from the side portion 84 of the seat 80 to the outside (vehicle compartment) of the seat 80 and is deployed toward the side space 86 while being inflated. Next, the airbag 10 is deployed in the vertical direction while being deployed in front of the seat bag 82, and the entire airbag 10 is inflated and deployed between the occupant 90 and the side wall 85. In this state, the occupant 90 is received and protected by the airbag 10. Further, the gas in the airbag 10 is discharged from the vent hole 11 of the airbag 10 (arrow G in FIG. 1), so that the impact of the occupant 90 is mitigated.

本実施形態のエアバッグ１０は、インフレータ３が発生するガスにより、主に乗員９０の肩９１より下の側方空間８６で膨張展開して、乗員９０の肩９１より下の胴体９２を保護する。即ち、エアバッグ１０が、胴体９２（乗員９０の胸部９３から腰部９４までの部分を含む）の側方に展開して、乗員９０の胴体９２が、エアバッグ１０により受け止められる。   The airbag 10 of the present embodiment is inflated and deployed mainly in the side space 86 below the shoulder 91 of the occupant 90 by the gas generated by the inflator 3, and protects the trunk 92 below the shoulder 91 of the occupant 90. . That is, the airbag 10 is deployed to the side of the body 92 (including the portion from the chest 93 to the waist 94 of the occupant 90), and the body 92 of the occupant 90 is received by the airbag 10.

また、エアバッグ１０は、乗員９０の上腕９５の背面に沿って展開する。これにより、エアバッグ１０が、胸部９３の側方に入り込んで、乗員９０の上腕９５より下の側方空間８６で膨張展開する。この側方空間８６の形状と胴体９２の側面形状に対応して、エアバッグ１０の寸法と形状が設定されており、エアバッグ１０は、前後方向よりも上下方向に長い形状に形成されている。   The airbag 10 is deployed along the back surface of the upper arm 95 of the occupant 90. As a result, the airbag 10 enters the side of the chest 93 and is inflated and deployed in the side space 86 below the upper arm 95 of the occupant 90. The size and shape of the airbag 10 are set corresponding to the shape of the side space 86 and the shape of the side surface of the body 92, and the airbag 10 is formed in a shape that is longer in the vertical direction than in the front-rear direction. .

乗員９０の胸部９３においては、背中側の部分と肋骨９６の側面部（図１ではハッチングを付す）が、エアバッグ１０により受け止められる。これに対し、乗員９０の肩９１は、胴体９２がエアバッグ１０に受け止められた状態で、側壁８５に接触し、肩９１の衝撃が側壁８５により吸収される。   In the chest portion 93 of the occupant 90, the back side portion and the side surface portion of the rib 96 (hatched in FIG. 1) are received by the airbag 10. In contrast, the shoulder 91 of the occupant 90 contacts the side wall 85 in a state where the body 92 is received by the airbag 10, and the impact of the shoulder 91 is absorbed by the side wall 85.

次に、エアバッグ１０の製造手順について説明する。
図３は、エアバッグ１０の製造手順を示す図であり、平面上に拡げたエアバッグ１０を示している。また、製造前のエアバッグ１０を図３Ａに示し、製造後のエアバッグ１０を図３Ｂに示す。
エアバッグ１０は、図示のように、乗員９０側の表基布（表パネル）１２と、側壁８５側の裏基布（裏パネル）１３を有する。基布１２、１３は、中心線Ｌで一体に繋がるとともに、中心線Ｌに関して線対称に形成されている（図３Ａ参照）。 Next, the manufacturing procedure of the airbag 10 will be described.
FIG. 3 is a diagram showing a manufacturing procedure of the airbag 10 and shows the airbag 10 expanded on a plane. Moreover, the airbag 10 before manufacture is shown to FIG. 3A, and the airbag 10 after manufacture is shown to FIG. 3B.
As illustrated, the airbag 10 includes a front base fabric (front panel) 12 on the occupant 90 side and a back base fabric (back panel) 13 on the side wall 85 side. The base fabrics 12 and 13 are integrally connected at the center line L and formed symmetrically with respect to the center line L (see FIG. 3A).

エアバッグ１０の製造時には、まず、基布１２、１３を中心線Ｌで折り返して、重ねた基布１２、１３を周縁接合部１４で気密状に接合する（図３Ｂ参照）。周縁接合部１４は、基布１２、１３の周縁部１５を縫製（又は、縫製と接着）により接合することで、対向する基布１２、１３の周縁部１５に形成される。その際、基布１２、１３の縁に、所定幅の接合代が設けられる。周縁接合部１４により、基布１２、１３の周縁部１５が塞がれて、気室１６が基布１２、１３の間に形成される。また、ベントホール１１とガスにより膨張する膨張部１７がエアバッグ１０に形成される。   When the airbag 10 is manufactured, first, the base fabrics 12 and 13 are folded back at the center line L, and the overlapped base fabrics 12 and 13 are joined in an airtight manner at the peripheral joint 14 (see FIG. 3B). The peripheral edge joining portion 14 is formed on the peripheral edge portion 15 of the opposing base fabrics 12 and 13 by joining the peripheral edge portions 15 of the base fabrics 12 and 13 by sewing (or sewing and bonding). At that time, a joining margin having a predetermined width is provided at the edges of the base fabrics 12 and 13. The peripheral edge 15 of the base fabrics 12 and 13 is closed by the peripheral joint 14, and the air chamber 16 is formed between the base fabrics 12 and 13. In addition, an inflatable portion 17 that is inflated by the vent hole 11 and gas is formed in the airbag 10.

ベントホール１１は、基布１２、１３の周縁部１５を部分的に接合しないことで、エアバッグ１０に形成される。気室１６は、膨張部１７の内部に形成され、ベントホール１１を通して、エアバッグ１０の外部と繋がる。インフレータ３は、スリット１８から膨張部１７（気室１６）内に挿入されて、膨張部１７に取り付けられる。インフレータ３が膨張部１７内でガスを発生して、ガスが気室１６内に充填される。これにより、膨張部１７と気室１６が膨張し、エアバッグ１０が膨張展開する。   The vent hole 11 is formed in the airbag 10 by not partially joining the peripheral edge portions 15 of the base fabrics 12 and 13. The air chamber 16 is formed inside the inflatable portion 17 and is connected to the outside of the airbag 10 through the vent hole 11. The inflator 3 is inserted into the inflating part 17 (the air chamber 16) from the slit 18 and attached to the inflating part 17. The inflator 3 generates gas in the inflating portion 17, and the gas is filled in the air chamber 16. Thereby, the inflating part 17 and the air chamber 16 are inflated, and the airbag 10 is inflated and deployed.

このように、エアバッグ１０は、対向する基布１２、１３と、対向する基布１２、１３を周縁部１５で接合することで袋状に形成された膨張部１７を有する。また、本実施形態では、エアバッグ１０の対向する基布１２、１３が、一対の切欠き部２０、２１を有し（図３Ａ参照）、エアバッグ１０が、一対の切欠き部２０、２１により立体形状に形成された立体形状部２２を有する（図３Ｂ参照）。立体形状部２２は、膨張部１７（エアバッグ１０）の１つ又は複数（ここでは１つ）の角部において、膨張部１７の厚さ方向に立体状に形成される。なお、膨張部１７の厚さ方向Ｗ（図２参照）は、膨張した状態の膨張部１７の厚さの方向である。以下では、膨張部１７の厚さ方向Ｗを、単に、厚さ方向Ｗという。   As described above, the airbag 10 includes the base fabrics 12 and 13 facing each other and the inflating portion 17 formed in a bag shape by joining the base fabrics 12 and 13 facing each other at the peripheral edge portion 15. Moreover, in this embodiment, the base fabrics 12 and 13 which the airbag 10 opposes have a pair of notch parts 20 and 21 (refer FIG. 3A), and the airbag 10 has a pair of notch parts 20 and 21. It has the three-dimensional shape part 22 formed in three-dimensional shape by (refer FIG. 3B). The three-dimensional shape portion 22 is formed in a three-dimensional shape in the thickness direction of the inflatable portion 17 at one or a plurality of (here, one) corner portions of the inflatable portion 17 (airbag 10). In addition, the thickness direction W (refer FIG. 2) of the expansion part 17 is a direction of the thickness of the expansion part 17 in the expanded state. Hereinafter, the thickness direction W of the inflating portion 17 is simply referred to as the thickness direction W.

図４は、エアバッグ１０に立体形状部２２を形成する手順を示す図であり、一対の切欠き部２０、２１付近のエアバッグ１０を示している。
図示のように、一対の切欠き部２０、２１と立体形状部２２は、エアバッグ１０の上端部に形成される。切欠き部２０、２１は、基布１２、１３の切欠き状に形成された部分であり、切欠き状の部分の周辺の基布１２、１３を含む。ここでは、一対の切欠き部２０、２１は、対向する基布１２、１３の各周縁部１５の一部（立体形状部２２が形成される部分）において、互いに重なり合う位置に形成され、基布１２、１３の接合時に重ね合わされる。また、一対の切欠き部２０、２１（図４Ａ参照）は、境界線が基布１２、１３の中心線Ｌに位置するように、中心線Ｌに関して線対称に形成され、全体として凹形状になっている。 FIG. 4 is a diagram showing a procedure for forming the three-dimensional shape portion 22 in the airbag 10, and shows the airbag 10 in the vicinity of the pair of cutout portions 20 and 21.
As illustrated, the pair of cutout portions 20 and 21 and the three-dimensional shape portion 22 are formed at the upper end portion of the airbag 10. The cutout portions 20 and 21 are portions of the base fabrics 12 and 13 that are formed in a cutout shape, and include the base fabrics 12 and 13 around the cutout portions. Here, a pair of notch parts 20 and 21 are formed in the position which overlaps each other in a part (part in which the solid-shaped part 22 is formed) of each peripheral part 15 of the base fabrics 12 and 13 which oppose, 12 and 13 are superposed at the time of joining. Further, the pair of notches 20 and 21 (see FIG. 4A) are formed symmetrically with respect to the center line L so that the boundary line is located at the center line L of the base fabrics 12 and 13, and are formed in a concave shape as a whole. It has become.

各基布１２（１３）の切欠き部２０（２１）は、凹形状をなし、切り欠き部２０（２１）内に形成された一対の縁部２０Ａ、２０Ｂ（２１Ａ、２１Ｂ）を有する。一対の縁部２０Ａ、２０Ｂ（２１Ａ、２１Ｂ）は、２つの直線部からなる屈曲形状に形成され、切欠き部２０（２１）の底部に位置する屈曲部２０Ｃ（２１Ｃ）で屈曲する。屈曲部２０Ｃ（２１Ｃ）は、一対の縁部２０Ａ、２０Ｂ（２１Ａ、２１Ｂ）の間に凹状に形成される。   The notch 20 (21) of each base fabric 12 (13) has a concave shape and has a pair of edges 20A, 20B (21A, 21B) formed in the notch 20 (21). The pair of edge portions 20A, 20B (21A, 21B) is formed in a bent shape including two straight portions, and is bent at a bent portion 20C (21C) located at the bottom of the notch portion 20 (21). The bent portion 20C (21C) is formed in a concave shape between the pair of edge portions 20A and 20B (21A and 21B).

周縁部１５を揃えて基布１２、１３を重ねたときに（図４Ｂ参照）、切欠き部２０、２１が重なり、縁部２０Ａ、２０Ｂ、２１Ａ、２１Ｂが合わされる。その状態で、基布１２、１３を周縁接合部１４で接合して、一対の切欠き部２０、２１を連結する。ただし、一対の切欠き部２０、２１内の部分は接合せずに、一対の切欠き部２０、２１の間に開口部２３を形成する。   When the peripheral portions 15 are aligned and the base fabrics 12 and 13 are overlapped (see FIG. 4B), the notches 20 and 21 are overlapped, and the edges 20A, 20B, 21A, and 21B are joined. In this state, the base fabrics 12 and 13 are joined by the peripheral joint 14 to connect the pair of notches 20 and 21. However, the opening part 23 is formed between a pair of notch parts 20 and 21, without joining the part in a pair of notch parts 20 and 21. FIG.

続いて、一対の切欠き部２０、２１と開口部２３を、厚さ方向Ｗに拡げて（図４Ｃ参照）、切欠き部２０、２１を、各屈曲部２０Ｃ、２１Ｃを通る中心線（折り線Ｆ１）で２つ折りする。一対の縁部２０Ａ、２０Ｂ（２１Ａ、２１Ｂ）（基布１２、１３の接合代を除いた部分）は、同じ長さになるように、折り線Ｆ１に関して線対称に形成され、一対の縁部２０Ａ、２０Ｂ（２１Ａ、２１Ｂ）と折り線Ｆ１との間の角度は同じ角度になっている。そのため、一対の切欠き部２０、２１を厚さ方向Ｗに伸ばすと、各切欠き部２０（２１）内の一対の縁部２０Ａ、２０Ｂ（２１Ａ、２１Ｂ）が重なり、開口部２３が閉じる（図４Ｄ参照）。また、膨張部１７の角部に、一対の切欠き部２０、２１からなる新たな縁部が、厚さ方向Ｗに形成される。その状態で、一対の切欠き部２０、２１を厚さ方向Ｗに直線状に接合することで、開口部２３が閉鎖される。   Subsequently, the pair of notches 20 and 21 and the opening 23 are expanded in the thickness direction W (see FIG. 4C), and the notches 20 and 21 are centered (folded) passing through the bent portions 20C and 21C. Fold it in half at line F1). The pair of edge portions 20A and 20B (21A and 21B) (the portion excluding the joining margin of the base fabrics 12 and 13) are formed symmetrically with respect to the fold line F1 so as to have the same length, and the pair of edge portions The angle between 20A, 20B (21A, 21B) and the fold line F1 is the same angle. Therefore, when the pair of notches 20 and 21 are extended in the thickness direction W, the pair of edges 20A and 20B (21A and 21B) in each notch 20 (21) overlap, and the opening 23 is closed ( (See FIG. 4D). Further, a new edge portion including a pair of cutout portions 20 and 21 is formed in the thickness direction W at the corner portion of the inflating portion 17. In that state, the opening 23 is closed by joining the pair of notches 20 and 21 linearly in the thickness direction W.

このように、一対の切欠き部２０、２１が、厚さ方向Ｗに伸ばした状態で、直線状の切欠き接合部２４で接合されて、エアバッグ１０に膨張部１７が形成される。切欠き部２０（２１）内の一対の縁部２０Ａ、２０Ｂ（２１Ａ、２１Ｂ）は、一対の切欠き部２０、２１を接合するときに、開口部２３を閉鎖するように重ねられた状態で接合される。その際、縁部２０Ａ、２０Ｂ、２１Ａ、２１Ｂには、所定幅の接合代が設けられる。また、一対の切欠き部２０、２１に、切欠き接合部２４が厚さ方向Ｗに沿って形成される。   In this way, the pair of cutout portions 20 and 21 are joined in the straight cutout joint portion 24 in a state where the cutout portions 20 and 21 are extended in the thickness direction W, and the inflatable portion 17 is formed in the airbag 10. The pair of edge portions 20A and 20B (21A and 21B) in the notch portion 20 (21) are overlapped so as to close the opening 23 when the pair of notch portions 20 and 21 are joined. Be joined. At that time, the margins 20A, 20B, 21A, and 21B are provided with a joining margin having a predetermined width. Further, a notch joining portion 24 is formed along the thickness direction W in the pair of notch portions 20 and 21.

一対の切欠き部２０、２１を接合することで、基布１２、１３の切欠き部２０、２１近傍を、厚さ方向Ｗに空間が設けられた形状に形成する。ここでは、これを立体形状に形成するといい、前記形状の部分を立体形状部２２という。また、基布１２、１３の切欠き部２０、２１近傍を前記形状に接合することを、立体形状に接合するという。前記形状は、平面的な基布１２、１３に対して、厚さ方向Ｗに立体的になっている。エアバッグ１０の立体形状部２２は、接合された一対の切欠き部２０、２１により、厚さ方向Ｗに立体的に形成される。   By joining the pair of notches 20 and 21, the vicinity of the notches 20 and 21 of the base fabrics 12 and 13 is formed in a shape in which a space is provided in the thickness direction W. Here, it is said that this is formed into a three-dimensional shape, and the portion of the shape is referred to as a three-dimensional shape portion 22. Moreover, joining the notch parts 20 and 21 vicinity of the base fabrics 12 and 13 to the said shape is said joining to a three-dimensional shape. The shape is three-dimensional in the thickness direction W with respect to the planar base fabrics 12 and 13. The three-dimensional shape portion 22 of the airbag 10 is three-dimensionally formed in the thickness direction W by the pair of cutout portions 20 and 21 joined together.

立体形状部２２は、対向する基布１２、１３の周縁部１５の一部に形成されて、膨張部１７の周縁部１９に位置する。立体形状部２２では、一対の切欠き部２０、２１の接合により、２つの周面Ｍ１、Ｍ２が、対向する基布１２、１３からなる２つの側面Ｍ３、Ｍ４の間に形成される。２つの周面Ｍ１、Ｍ２は、厚さ方向Ｗに沿うように、切欠き接合部２４を共通する端部として形成される。立体形状部２２は、これら４つの面Ｍ１〜Ｍ４が組み合わされた立体形状に形成される。エアバッグ１０は、１つ又は複数（ここでは１つ）の立体形状部２２を有し、立体形状部２２とともに厚さ方向Ｗに膨張する。   The three-dimensional shape portion 22 is formed on a part of the peripheral edge portion 15 of the opposing base fabrics 12 and 13 and is positioned on the peripheral edge portion 19 of the inflating portion 17. In the three-dimensional shape portion 22, two peripheral surfaces M <b> 1 and M <b> 2 are formed between two side surfaces M <b> 3 and M <b> 4 composed of the opposing base fabrics 12 and 13 by joining the pair of cutout portions 20 and 21. The two peripheral surfaces M <b> 1 and M <b> 2 are formed with the notched joint portion 24 as a common end portion along the thickness direction W. The three-dimensional shape portion 22 is formed in a three-dimensional shape in which these four surfaces M1 to M4 are combined. The airbag 10 has one or a plurality of (here, one) three-dimensionally shaped portions 22 and inflates in the thickness direction W together with the three-dimensionally shaped portions 22.

図５は、膨張後のエアバッグ１０の側面図であり、図６は、膨張後のエアバッグ１０の斜視図である。
図示のように、エアバッグ１０の膨張により、膨張部１７が厚さ方向Ｗに膨張する。立体形状部２２は、膨張部１７の一部であり、膨張部１７の周縁部１９で厚さ方向Ｗに立体的に膨張する。 FIG. 5 is a side view of the airbag 10 after inflation, and FIG. 6 is a perspective view of the airbag 10 after inflation.
As shown in the drawing, the inflation portion 17 is inflated in the thickness direction W by the inflation of the airbag 10. The three-dimensionally shaped part 22 is a part of the inflating part 17 and inflates three-dimensionally in the thickness direction W at the peripheral part 19 of the inflating part 17.

エアバッグ１０を側面からみたときに（図５参照）、膨張後のエアバッグ１０及び膨張部１７は、平面上に拡げた状態Ｔ（図５に二点鎖線で示す）よりも縮み、膨張部１７の周縁部１９が内側に変位する。これに対し、厚さ方向Ｗに立体的に形成された立体形状部２２では、縮みや変位が抑制されて、立体形状部２２が厚さ方向Ｗに膨張する。その結果、立体形状部２２は、エアバッグ１０の所定位置において、一対の切欠き部２０、２１の寸法に対応した所定厚さに膨張する（図６参照）。また、エアバッグ１０が胴体９２の側方に膨張展開したときに、立体形状部２２は、車室内の所定位置で膨張する。   When the airbag 10 is viewed from the side (see FIG. 5), the inflated airbag 10 and the inflatable portion 17 are contracted more than the expanded state T (indicated by a two-dot chain line in FIG. 5), and the inflatable portion. The peripheral edge 19 of 17 is displaced inward. On the other hand, in the three-dimensional shape part 22 formed three-dimensionally in the thickness direction W, shrinkage and displacement are suppressed, and the three-dimensional shape part 22 expands in the thickness direction W. As a result, the three-dimensionally shaped portion 22 expands to a predetermined thickness corresponding to the dimensions of the pair of notches 20 and 21 at a predetermined position of the airbag 10 (see FIG. 6). Further, when the airbag 10 is inflated and deployed to the side of the body 92, the three-dimensional shape portion 22 is inflated at a predetermined position in the vehicle interior.

エアバッグ１０は、乗員９０の保護すべき部分に対応して、下部よりも上部が細くなるように形成されている。これに伴い、エアバッグ１０の膨張部１７は、上方に向かって次第に細くなる上部膨張部１７Ａを有する。上部膨張部１７Ａ（図１参照）は、乗員９０の上腕９５の背面に沿って上方に展開し、胸部９３の側方で上方に突出するように膨張する。   The airbag 10 is formed so that the upper part is thinner than the lower part corresponding to the part of the occupant 90 to be protected. Accordingly, the inflatable portion 17 of the airbag 10 has an upper inflatable portion 17A that gradually becomes thinner upward. The upper inflating portion 17A (see FIG. 1) expands upward along the back surface of the upper arm 95 of the occupant 90, and inflates so as to protrude upward on the side of the chest 93.

エアバッグ１０の立体形状部２２は、上部膨張部１７Ａの頂部（エアバッグ１０の最も上の部分）に形成されており、膨張部１７の上方の先端部において膨張する。上記したように、立体形状部２２が所定位置で膨張する結果、上部膨張部１７Ａに反り返りや位置ずれが生じるのが抑制される。また、上部膨張部１７Ａでは、対向する基布１２、１３からなる２つの側面Ｍ３、Ｍ４が、それらの間に形成される２つの周面Ｍ１、Ｍ２に支えられて、上部膨張部１７Ａが自立するように膨張展開する。これに伴い、上部膨張部１７Ａの位置が安定するとともに、上部膨張部１７Ａが、乗員９０の肩９１及び上腕９５より下の側方空間８６に円滑に膨張展開する。   The three-dimensional shape portion 22 of the airbag 10 is formed at the top portion (the uppermost portion of the airbag 10) of the upper inflating portion 17 </ b> A, and inflates at the tip portion above the inflating portion 17. As described above, as a result of the three-dimensionally shaped portion 22 expanding at a predetermined position, the upper expanding portion 17A is prevented from being warped or displaced. In the upper inflating portion 17A, the two side surfaces M3 and M4 made of the opposing base fabrics 12 and 13 are supported by the two peripheral surfaces M1 and M2 formed therebetween, and the upper inflating portion 17A is self-supporting. Inflate and expand as you do. Accordingly, the position of the upper inflating portion 17A is stabilized, and the upper inflating portion 17A is smoothly inflated and deployed in the side space 86 below the shoulder 91 and the upper arm 95 of the occupant 90.

以上説明したように、本実施形態のサイドエアバッグ装置１では、エアバッグ１０により乗員９０の肩９１より下の胴体９２を保護するため、展開中のエアバッグ１０が乗員９０の肩９１に引っ掛かるのを防止できる。また、エアバッグ１０が胴体９２の側方で展開するため、展開中のエアバッグ１０が乗員９０の上腕９５を跳ね上げるのを抑制できる。その結果、乗員９０と側壁８５の間が狭い車両であっても、エアバッグ１０を安定して展開することができ、エアバッグ１０の衝撃吸収特性を確実に発揮させることができる。   As described above, in the side airbag device 1 of the present embodiment, the airbag 10 being deployed is caught by the shoulder 91 of the occupant 90 in order to protect the body 92 below the shoulder 91 of the occupant 90 by the airbag 10. Can be prevented. Further, since the airbag 10 is deployed on the side of the body 92, it is possible to suppress the airbag 10 being deployed from jumping up the upper arm 95 of the occupant 90. As a result, even in a vehicle where the space between the occupant 90 and the side wall 85 is narrow, the airbag 10 can be stably deployed, and the impact absorption characteristics of the airbag 10 can be reliably exhibited.

エアバッグ１０の展開前に、乗員９０の上腕９５が、前方に傾斜する状態（図１参照）よりも下方に降ろされて、側方空間８６内に位置することがある。その状態でエアバッグ１０が展開すると、エアバッグ１０は、周面Ｍ１等で上腕９５の背面を前方に押すように、上腕９５とシート８０の間で上腕９５の背面に沿って展開する。これにより、上腕９５が、跳ね上げられることなくエアバッグ１０の前方に移動するため、エアバッグ１０を円滑に展開することができる。また、上記と同様に、展開中のエアバッグ１０が乗員９０の肩９１に引っ掛かるのを防止できる。   Prior to deployment of the airbag 10, the upper arm 95 of the occupant 90 may be positioned lower than the state in which the occupant 90 is inclined forward (see FIG. 1) and located in the side space 86. When the airbag 10 is deployed in this state, the airbag 10 is deployed along the back surface of the upper arm 95 between the upper arm 95 and the seat 80 so that the back surface of the upper arm 95 is pushed forward by the peripheral surface M1 or the like. Thereby, since the upper arm 95 moves ahead of the airbag 10 without being flipped up, the airbag 10 can be smoothly deployed. Further, similarly to the above, the airbag 10 being deployed can be prevented from being caught on the shoulder 91 of the occupant 90.

エアバッグ１０を肩９１より下の胴体９２において展開すればよいため、エアバッグ１０の胸部９３（又は、腰部９４）を受け止める部分を早く膨張させることができる。これにより、胸部９３や腰部９４を早期に拘束しつつ、胸部９３や腰部９４の衝撃を確実に吸収できる。また、エアバッグ１０の展開時に、肩９１と上腕９５の移動が抑制されるため、肩９１を側壁８５の所定位置（衝撃吸収位置）に接触させることができ、肩９１の衝撃を側壁８５により確実に吸収できる。   Since the airbag 10 has only to be deployed in the trunk 92 below the shoulder 91, the portion of the airbag 10 that receives the chest 93 (or waist 94) can be inflated quickly. Thereby, the impact of the chest 93 and the waist 94 can be reliably absorbed while restraining the chest 93 and the waist 94 early. Further, since the movement of the shoulder 91 and the upper arm 95 is suppressed when the airbag 10 is deployed, the shoulder 91 can be brought into contact with a predetermined position (shock absorbing position) of the side wall 85, and the impact of the shoulder 91 is caused by the side wall 85. Can be absorbed reliably.

一対の切欠き部２０、２１を接合することで、立体形状部２２をエアバッグ１０に形成するため、エアバッグ１０を容易に立体的に形成できる。また、立体形状部２２により、エアバッグ１０を乗員９０の保護すべき部分に対応した形状に形成できるとともに、エアバッグ１０を、乗員９０の衝撃を吸収するのに必要な厚さに膨張させることができる。そのため、エアバッグ１０の衝撃吸収特性が向上し、エアバッグ１０により乗員９０の衝撃を確実に吸収できる。   By joining the pair of notches 20 and 21, the three-dimensionally shaped portion 22 is formed in the airbag 10, so that the airbag 10 can be easily formed in three dimensions. Further, the airbag 10 can be formed into a shape corresponding to a portion to be protected by the occupant 90 by the three-dimensional shape portion 22 and the airbag 10 is inflated to a thickness necessary to absorb the impact of the occupant 90. Can do. Therefore, the impact absorption characteristic of the airbag 10 is improved, and the impact of the occupant 90 can be reliably absorbed by the airbag 10.

ここで、立体形状部２２を有さない平面的なエアバッグ（平面的エアバッグという）では、膨張時の厚さは、周縁接合部１４から離れるにつれて徐々に厚さ方向Ｗに厚くなる。従って、立体形状部２２と同等の厚さを、平面的エアバッグの立体形状部２２に対応する部分（対応部分という）に確保するためには、対応部分を周縁接合部１４から離れた位置に設ける必要がある。この場合には、膨張状態において、平面的エアバッグ（対応部分の周辺）が立体形状部２２よりも大きくなるため、平面的エアバッグの膨張展開が遅くなる虞がある。また、展開中の平面的エアバッグが、乗員９０（肩９１、上腕９５等）や車両内の部品に引っ掛かる虞もある。   Here, in a planar airbag that does not have the three-dimensionally shaped portion 22 (referred to as a planar airbag), the thickness at the time of inflation gradually increases in the thickness direction W as the distance from the peripheral joint portion 14 increases. Therefore, in order to ensure a thickness equivalent to that of the three-dimensional shape portion 22 in a portion corresponding to the three-dimensional shape portion 22 of the planar airbag (referred to as a corresponding portion), the corresponding portion is located away from the peripheral joint portion 14. It is necessary to provide it. In this case, in the inflated state, the planar airbag (periphery of the corresponding portion) is larger than the three-dimensional shape portion 22, so that the inflation and deployment of the planar airbag may be delayed. In addition, there is a possibility that the planar airbag being deployed may be caught by the occupant 90 (shoulder 91, upper arm 95, etc.) or parts in the vehicle.

これに対し、本実施形態のエアバッグ１０では、立体形状部２２により、エアバッグ１０の厚さを確保できるため、エアバッグ１０を小さくすることができる。その結果、エアバッグ１０が早く膨張展開し、展開中のエアバッグ１０が乗員９０や部品に引っ掛かるのが防止される。また、エアバッグ１０が、胴体９２の側方に安定して、かつ、早く展開するため、エアバッグ１０の衝撃吸収特性を確実に発揮させることができる。エアバッグ１０が小さくなるため、エアバッグ１０の重量とコストを低減することもできる。   On the other hand, in the airbag 10 of this embodiment, since the thickness of the airbag 10 can be ensured by the three-dimensionally shaped portion 22, the airbag 10 can be made small. As a result, the airbag 10 is inflated and deployed quickly, and the airbag 10 being deployed is prevented from being caught by the occupant 90 and parts. In addition, since the airbag 10 is stably and quickly deployed on the side of the body 92, the impact absorbing characteristics of the airbag 10 can be reliably exhibited. Since the airbag 10 becomes small, the weight and cost of the airbag 10 can also be reduced.

一対の切欠き部２０、２１を接合することで、立体形状部２２を容易に形成できるため、エアバッグ１０の製造に要する手間と時間を削減できる。また、基布１２、１３に無駄な部分を生じさせずに、立体形状部２２を形成できるため、エアバッグ１０の重量とコストを低減できる。立体形状部２２は折り畳み易いため、エアバッグ１０をコンパクトに折り畳むことができる。エアバッグ１０が展開するときには、立体形状部２２は、周辺に引っ掛かることなく円滑に展開する。   By joining the pair of cutout portions 20 and 21, the three-dimensional shape portion 22 can be easily formed, so that labor and time required for manufacturing the airbag 10 can be reduced. Further, since the three-dimensionally shaped portion 22 can be formed without causing unnecessary portions on the base fabrics 12 and 13, the weight and cost of the airbag 10 can be reduced. Since the three-dimensional shape part 22 is easy to fold, the airbag 10 can be folded compactly. When the airbag 10 is deployed, the three-dimensional shape portion 22 is smoothly deployed without being caught around.

エアバッグ１０の展開時に膨張部１７の上部が反り返る場合には、反り返りの程度に対応して、膨張部１７の上部を予め大きくする必要がある。また、反り返りに伴い、膨張部１７に乗員９０に接触しない無駄な部分が発生する。これに対し、立体形状部２２を上部膨張部１７Ａの頂部に形成することで、上記したように、上部膨張部１７Ａに反り返りが生じるのが抑制される。そのため、膨張部１７に無駄な部分が発生するのを防止して、膨張部１７を有効に活用できる。上部膨張部１７Ａが上腕９５の背面に沿って上方に展開することで、上部膨張部１７Ａが、肩９１及び上腕９５より下の側方空間８６に円滑に、かつ、安定して展開する。   When the upper part of the inflating part 17 warps when the airbag 10 is deployed, it is necessary to enlarge the upper part of the inflating part 17 in advance in accordance with the degree of warping. In addition, a wasteful portion that does not come into contact with the occupant 90 is generated in the inflatable portion 17 along with the warping. On the other hand, by forming the three-dimensionally shaped portion 22 on the top of the upper inflating portion 17A, it is possible to prevent the upper inflating portion 17A from being warped as described above. Therefore, it is possible to prevent the useless portion from being generated in the expansion portion 17 and to effectively use the expansion portion 17. When the upper inflating portion 17A is deployed upward along the back surface of the upper arm 95, the upper inflating portion 17A is smoothly and stably deployed in the side space 86 below the shoulder 91 and the upper arm 95.

立体形状部２２を形成する際には、切欠き部２０（切欠き部２１も同様）の一対の縁部２０Ａ、２０Ｂを重ねて接合する。このようにすることで、一対の縁部２０Ａ、２０Ｂの接合位置を明確に把握できるため、一対の縁部２０Ａ、２０Ｂを精度よく接合できる。また、一対の縁部２０Ａ、２０Ｂを密着した状態で容易に接合できるため、立体形状部２２に皺やずれが生じるのを防止できる。従って、立体形状部２２を正確に形成できる。一対の縁部２０Ａ、２０Ｂを、２つの直線部からなる屈曲形状に形成すると、縁部２０Ａ、２０Ｂが接合し易くなるため、立体形状部２２を、より正確に形成できる。   When the three-dimensional shape portion 22 is formed, the pair of edge portions 20A and 20B of the notch portion 20 (same for the notch portion 21) are overlapped and joined. By doing in this way, since the joining position of a pair of edge part 20A, 20B can be grasped | ascertained clearly, a pair of edge part 20A, 20B can be joined accurately. Moreover, since it can join easily in the state which contact | adhered a pair of edge part 20A, 20B, it can prevent that a wrinkle and a shift | offset | difference arise in the solid-shaped part 22. Therefore, the three-dimensional shape part 22 can be formed accurately. If the pair of edge portions 20A and 20B are formed in a bent shape composed of two straight portions, the edge portions 20A and 20B can be easily joined, so that the three-dimensional shape portion 22 can be formed more accurately.

なお、一対の縁部２０Ａ、２０Ｂ（縁部２１Ａ、２１Ｂも同様）は、曲線状に形成するようにしてもよい。また、一対の切欠き部２０、２１は、基布１２、１３の中心線Ｌに関して非対称な形状に形成するようにしてもよい。切欠き接合部２４は、厚さ方向Ｗに直線状に形成する以外に、厚さ方向Ｗに曲線状に形成してもよく、厚さ方向Ｗに対して傾斜して形成してもよい。以下、上記した立体形状部２２とは形状が異なる他の実施形態の立体形状部について説明する。   The pair of edge portions 20A and 20B (the same applies to the edge portions 21A and 21B) may be formed in a curved shape. The pair of notches 20 and 21 may be formed in an asymmetric shape with respect to the center line L of the base fabrics 12 and 13. In addition to being formed linearly in the thickness direction W, the notched joint portion 24 may be formed in a curved shape in the thickness direction W, or may be formed inclined with respect to the thickness direction W. Hereinafter, a three-dimensional shape portion of another embodiment having a different shape from the above-described three-dimensional shape portion 22 will be described.

図７〜図１１は、他の実施形態の立体形状部を示す図である。図７Ａ〜図１１Ａは、立体形状部を形成する前の基布１２、１３を示す平面図であり、図７Ｂ〜図１１Ｂは、形成後の立体形状部を示す斜視図である。
図７に示す立体形状部３０では、一対の切欠き部３１、３２が、基布１２、１３の中心線Ｌに関して線対称に形成されている。また、各切欠き部３１（３２）の一対の縁部３１Ａ、３１Ｂ（３２Ａ、３２Ｂ）は、２つの曲線部からなる屈曲形状に形成されている。 7-11 is a figure which shows the solid-shaped part of other embodiment. 7A to 11A are plan views showing the base fabrics 12 and 13 before forming the three-dimensional shape portion, and FIGS. 7B to 11B are perspective views showing the three-dimensional shape portion after formation.
In the three-dimensional shape portion 30 shown in FIG. 7, the pair of cutout portions 31 and 32 are formed symmetrically with respect to the center line L of the base fabrics 12 and 13. Moreover, a pair of edge part 31A, 31B (32A, 32B) of each notch part 31 (32) is formed in the bending shape which consists of two curved parts.

重ねた基布１２、１３を周縁接合部１４で接合した後、一対の切欠き部３１、３２を、厚さ方向Ｗに伸ばした状態で接合する。その際、切欠き部３１、３２が、各屈曲部３１Ｃ、３２Ｃを通る折り線Ｆ２で２つ折りされ、一対の縁部３１Ａ、３１Ｂ（３２Ａ、３２Ｂ）が、重ねられて接合される。一対の切欠き部３１、３２は、湾曲した切欠き接合部３３において、厚さ方向Ｗに曲線状に接合される。これにより、エアバッグ１０の立体形状部３０が、厚さ方向Ｗに立体的に形成される。膨張部１７の膨張時には、立体形状部３０は、膨張部１７の外方に湾曲するように膨張する。   After the overlapped base fabrics 12 and 13 are joined at the peripheral joining portion 14, the pair of cutout portions 31 and 32 are joined in a state of extending in the thickness direction W. At that time, the notches 31 and 32 are folded in two along the fold line F2 passing through the bent portions 31C and 32C, and the pair of edge portions 31A and 31B (32A and 32B) are overlapped and joined. The pair of notch portions 31 and 32 are joined in a curved shape in the thickness direction W at the notch joining portion 33 that is curved. Thereby, the three-dimensional shape part 30 of the airbag 10 is three-dimensionally formed in the thickness direction W. When the inflating part 17 is inflated, the three-dimensionally shaped part 30 is inflated so as to curve outward from the inflating part 17.

図８に示す立体形状部３４では、一対の切欠き部３５、３６が、基布１２、１３の中心線Ｌに関して非対称に形成されている。また、各切欠き部３５（３６）の一対の縁部３５Ａ、３５Ｂ（３６Ａ、３６Ｂ）は、２つの直線部からなる屈曲形状に形成されている。一方の切欠き部３６では、一対の縁部３６Ａ、３６Ｂの間に、凸状の屈曲部３６Ｃが形成され、一対の縁部３６Ａ、３６Ｂが、屈曲部３６Ｃを通る折り線Ｆ３に関して線対称に形成されている。   In the three-dimensional shape portion 34 shown in FIG. 8, the pair of cutout portions 35 and 36 are formed asymmetrically with respect to the center line L of the base fabrics 12 and 13. Further, the pair of edge portions 35A and 35B (36A and 36B) of each notch portion 35 (36) is formed in a bent shape composed of two linear portions. In one notch portion 36, a convex bent portion 36C is formed between the pair of edge portions 36A and 36B, and the pair of edge portions 36A and 36B are axisymmetric with respect to a fold line F3 passing through the bent portion 36C. Is formed.

重ねた基布１２、１３を周縁接合部１４で接合した後、一対の切欠き部３５、３６を、厚さ方向Ｗに伸ばした状態で接合する。その際、切欠き部３５、３６が、各屈曲部３５Ｃ、３６Ｃを通る折り線Ｆ３で２つ折りされ、一対の縁部３５Ａ、３５Ｂ（３６Ａ、３６Ｂ）が、重ねられて接合される。一対の切欠き部３５、３６は、傾斜した切欠き接合部３７において、厚さ方向Ｗに対して傾斜して接合される。これにより、エアバッグ１０の立体形状部３４が、厚さ方向Ｗに立体的に形成される。膨張部１７の膨張時には、立体形状部３４が、厚さ方向Ｗに対して傾斜するように膨張し、立体形状部３４の一方側が他方側よりも小さく膨張する。   After the overlapped base fabrics 12 and 13 are joined at the peripheral joining portion 14, the pair of cutout portions 35 and 36 are joined in a state of extending in the thickness direction W. At that time, the notches 35 and 36 are folded in two along a fold line F3 passing through the bent portions 35C and 36C, and a pair of edge portions 35A and 35B (36A and 36B) are overlapped and joined. The pair of notch portions 35 and 36 are joined at an inclined notch joining portion 37 so as to be inclined with respect to the thickness direction W. Thereby, the three-dimensionally shaped portion 34 of the airbag 10 is three-dimensionally formed in the thickness direction W. When the inflating portion 17 is inflated, the three-dimensional shape portion 34 is inflated so as to be inclined with respect to the thickness direction W, and one side of the three-dimensional shape portion 34 is inflated smaller than the other side.

図９に示す立体形状部４０では、一対の切欠き部４１、４２が、基布１２、１３の中心線Ｌに関して非対称に形成されている。また、一方の切欠き部４１の一対の縁部４１Ａ、４１Ｂは、２つの直線部からなる屈曲形状に形成され、他方の切欠き部４２の一対の縁部４２Ａ、４２Ｂは、２つの曲線部からなる屈曲形状に形成されている。   In the three-dimensional shape portion 40 shown in FIG. 9, the pair of cutout portions 41 and 42 are formed asymmetrically with respect to the center line L of the base fabrics 12 and 13. The pair of edge portions 41A and 41B of one notch portion 41 are formed in a bent shape composed of two straight portions, and the pair of edge portions 42A and 42B of the other notch portion 42 are two curved portions. It is formed in the bending shape which consists of.

重ねた基布１２、１３を周縁接合部１４で接合した後、一対の切欠き部４１、４２を、厚さ方向Ｗに伸ばした状態で接合する。その際、一対の切欠き部４１、４２が、各屈曲部４１Ｃ、４２Ｃを通る折り線Ｆ４で２つ折りされ、一対の縁部４１Ａ、４１Ｂ（４２Ａ、４２Ｂ）が、重ねられて接合される。また、一方の切欠き部４１は、切欠き接合部４３の直線部４３Ａで厚さ方向Ｗに直線状に接合され、他方の切欠き部４２は、切欠き接合部４３の湾曲部４３Ｂで厚さ方向Ｗに曲線状に接合される。即ち、一対の切欠き部４１、４２は、直線部４３Ａと湾曲部４３Ｂからなる切欠き接合部４３において、厚さ方向Ｗに接合される。これにより、エアバッグ１０の立体形状部４０が、厚さ方向Ｗに立体的に形成される。膨張部１７の膨張時には、立体形状部４０の一部が、厚さ方向Ｗに対して湾曲するように膨張し、立体形状部４０の一方側が他方側よりも大きく膨張する。   After the overlapped base fabrics 12 and 13 are joined at the peripheral joint portion 14, the pair of cutout portions 41 and 42 are joined in a state of extending in the thickness direction W. In that case, a pair of notch parts 41 and 42 are folded in half by the fold line F4 which passes along each bending part 41C, 42C, and a pair of edge part 41A, 41B (42A, 42B) is piled up and joined. One notch portion 41 is linearly joined in the thickness direction W at the straight portion 43A of the notch joint portion 43, and the other notch portion 42 is thick at the curved portion 43B of the notch joint portion 43. Joined in a curved shape in the vertical direction W. That is, the pair of notches 41 and 42 are joined in the thickness direction W at the notch joining portion 43 including the straight portion 43A and the curved portion 43B. Thereby, the three-dimensional shape part 40 of the airbag 10 is three-dimensionally formed in the thickness direction W. When the inflating portion 17 is inflated, a part of the three-dimensional shape portion 40 is inflated so as to bend in the thickness direction W, and one side of the three-dimensional shape portion 40 is inflated more than the other side.

図１０に示す立体形状部４４では、一対の切欠き部４５、４６が、基布１２、１３の中心線Ｌに関して非対称に形成されている。また、一方の切欠き部４５の一対の縁部４５Ａ、４５Ｂは、２つの直線部からなる屈曲形状に形成され、他方の切欠き部４６の一対の縁部４６Ａ、４６Ｂは、２つの曲線部からなる屈曲形状に形成されている。他方の切欠き部４６では、一対の縁部４６Ａ、４６Ｂの間に、凸状の屈曲部４６Ｃが形成され、一対の縁部４６Ａ、４６Ｂが、屈曲部４６Ｃを通る折り線Ｆ５に関して線対称に形成されている。   In the three-dimensional shape portion 44 shown in FIG. 10, the pair of cutout portions 45 and 46 are formed asymmetrically with respect to the center line L of the base fabrics 12 and 13. The pair of edge portions 45A and 45B of one notch portion 45 are formed in a bent shape composed of two straight portions, and the pair of edge portions 46A and 46B of the other notch portion 46 are two curved portions. It is formed in the bending shape which consists of. In the other notch portion 46, a convex bent portion 46C is formed between the pair of edge portions 46A and 46B, and the pair of edge portions 46A and 46B are symmetrical with respect to a fold line F5 passing through the bent portion 46C. Is formed.

重ねた基布１２、１３を周縁接合部１４で接合した後、一対の切欠き部４５、４６を、厚さ方向Ｗに伸ばした状態で接合する。その際、一対の切欠き部４５、４６が、各屈曲部４５Ｃ、４６Ｃを通る折り線Ｆ５で２つ折りされ、一対の縁部４５Ａ、４５Ｂ（４６Ａ、４６Ｂ）が、重ねられて接合される。また、一方の切欠き部４５は、切欠き接合部４７の直線部４７Ａで厚さ方向Ｗに直線状に接合され、他方の切欠き部４６は、切欠き接合部４７の湾曲部４７Ｂで厚さ方向Ｗに曲線状に接合される。即ち、一対の切欠き部４５、４６は、直線部４７Ａと湾曲部４７Ｂからなる切欠き接合部４７において、厚さ方向Ｗに接合される。これにより、エアバッグ１０の立体形状部４４が、厚さ方向Ｗに立体的に形成される。膨張部１７の膨張時には、立体形状部４４の一部が、厚さ方向Ｗに対して湾曲するように膨張し、立体形状部４４の一方側が他方側よりも小さく膨張する。   After the overlapped base fabrics 12 and 13 are joined at the peripheral joint portion 14, the pair of cutout portions 45 and 46 are joined in a state of extending in the thickness direction W. In that case, a pair of notch parts 45 and 46 are folded in two by the fold line F5 which passes through each bending part 45C, 46C, and a pair of edge part 45A, 45B (46A, 46B) is piled up and joined. One notch portion 45 is linearly joined in the thickness direction W at a straight portion 47A of the notch joining portion 47, and the other notch portion 46 is thick at a curved portion 47B of the notch joining portion 47. Joined in a curved shape in the vertical direction W. That is, the pair of notch portions 45 and 46 are joined in the thickness direction W at the notch joining portion 47 including the straight portion 47A and the curved portion 47B. Thereby, the three-dimensionally shaped portion 44 of the airbag 10 is three-dimensionally formed in the thickness direction W. When the inflating portion 17 is inflated, a part of the three-dimensional shape portion 44 is inflated so as to bend in the thickness direction W, and one side of the three-dimensional shape portion 44 is inflated smaller than the other side.

以上のように、立体形状部は様々な形状に形成され、立体形状部を適宜形成することで、側方空間８６に合わせた立体形状部を、容易に、かつ、正確に形成することができる。   As described above, the three-dimensional shape portion is formed in various shapes, and by appropriately forming the three-dimensional shape portion, the three-dimensional shape portion that matches the side space 86 can be easily and accurately formed. .

図１１に示す立体形状部５０では、一対の切欠き部５１、５２が、基布１２、１３の中心線Ｌに関して非対称に形成されている。また、各切欠き部５１（５２）の一対の縁部５１Ａ、５１Ｂ（５２Ａ、５２Ｂ）は、２つの直線部からなる屈曲形状に形成されている。ここでは、一方の切欠き部５１の縁部５１Ａ、５１Ｂは、他方の切欠き部５２の縁部５２Ａ、５２Ｂよりも長くなっている。   In the three-dimensional shape portion 50 shown in FIG. 11, the pair of cutout portions 51 and 52 are formed asymmetrically with respect to the center line L of the base fabrics 12 and 13. A pair of edge portions 51A and 51B (52A and 52B) of each notch 51 (52) is formed in a bent shape composed of two straight portions. Here, the edges 51 </ b> A and 51 </ b> B of one notch 51 are longer than the edges 52 </ b> A and 52 </ b> B of the other notch 52.

重ねた基布１２、１３を周縁接合部１４で接合した後、一対の切欠き部５１、５２を、厚さ方向Ｗに伸ばした状態で接合する。その際、一対の切欠き部５１、５２が、各屈曲部５１Ｃ、５２Ｃを通る折り線Ｆ６で２つ折りされ、一対の縁部５１Ａ、５１Ｂ（５２Ａ、５２Ｂ）が、重ねられて接合される。一対の切欠き部５１、５２は、直線状の切欠き接合部５３において、厚さ方向Ｗに直線状に接合される。これにより、エアバッグ１０の立体形状部５０が、厚さ方向Ｗに立体的に形成される。また、縁部５１Ａ、５１Ｂ、５２Ａ、５２Ｂの長さの差に対応して、周縁接合部１４が、厚さ方向Ｗの一方側にずれた位置に配置される。周縁接合部１４をずらしたことで、対向する基布１２、１３からなる２つの側面Ｍ３、Ｍ４の間の周面Ｓに、ベントホール等を設けることができる。ベントホールは、例えば、基布１２に開口を形成することで、周面Ｓに設けられる。   After the overlapped base fabrics 12 and 13 are joined at the peripheral joint portion 14, the pair of cutout portions 51 and 52 are joined in a state of extending in the thickness direction W. In that case, a pair of notch parts 51 and 52 are folded in half by the fold line F6 which passes through each bending part 51C, 52C, and a pair of edge part 51A, 51B (52A, 52B) is piled up and joined. The pair of cutout portions 51 and 52 are joined linearly in the thickness direction W at the straight cutout joining portion 53. Thereby, the three-dimensionally shaped portion 50 of the airbag 10 is three-dimensionally formed in the thickness direction W. Further, the peripheral joint portion 14 is disposed at a position shifted to one side in the thickness direction W in accordance with the difference in length between the edge portions 51A, 51B, 52A, and 52B. By shifting the peripheral joint 14, a vent hole or the like can be provided on the peripheral surface S between the two side surfaces M <b> 3 and M <b> 4 composed of the opposing base fabrics 12 and 13. The vent hole is provided in the circumferential surface S by forming an opening in the base fabric 12, for example.

以上説明したエアバッグ１０では、膨張部１７の１つの角部に立体形状部を形成したが、立体形状部は、膨張部１７の複数の角部に形成してもよい。即ち、立体形状部は、膨張部１７の周縁部１９に位置する１つ又は複数の角部に形成される。
図１２は、複数の立体形状部を有するエアバッグ１０を示す図であり、エアバッグ１０の製造手順を図３に対応させて示している。 In the airbag 10 described above, the three-dimensional shape portion is formed at one corner of the inflatable portion 17, but the three-dimensional shape portion may be formed at a plurality of corner portions of the inflatable portion 17. That is, the three-dimensionally shaped part is formed at one or more corners located at the peripheral edge 19 of the inflating part 17.
FIG. 12 is a view showing the airbag 10 having a plurality of three-dimensionally shaped portions, and shows a manufacturing procedure of the airbag 10 corresponding to FIG.

このエアバッグ１０（図１２Ａ参照）では、対向する基布１２、１３が、４組みの一対の切欠き部２０、２１（６０、６１）（６２、６３）（６４、６５）を有する。一対の切欠き部２０、２１（６０、６１）（６２、６３）（６４、６５）は、それぞれ屈曲形状（例えば、Ｌ字状やＶ字状）に形成された一対の縁部を有し、各周縁部１５の重なり合う位置に形成されている。   In the airbag 10 (see FIG. 12A), the opposing base fabrics 12 and 13 have four pairs of cutout portions 20, 21 (60, 61) (62, 63) (64, 65). Each of the pair of notches 20, 21 (60, 61) (62, 63) (64, 65) has a pair of edge portions formed in a bent shape (for example, an L shape or a V shape). The peripheral edge portions 15 are formed at overlapping positions.

重ねた基布１２、１３を周縁接合部１４で接合した後（図１２Ｂ参照）、一対の切欠き部２０、２１（６０、６１）（６２、６３）（６４、６５）を、それぞれ厚さ方向Ｗに伸ばした状態で、切欠き接合部２４、６６〜６８で接合する（図１２Ｃ参照）。これにより、４つの立体形状部２２、７０〜７２を、膨張部１７の４つの角部に形成する。立体形状部２２、７０〜７２が厚さ方向Ｗに立体的に膨張することで、エアバッグ１０と膨張部１７が所定厚さに膨張する。   After the overlapping base fabrics 12 and 13 are joined at the peripheral joint 14 (see FIG. 12B), the pair of notches 20, 21 (60, 61) (62, 63) (64, 65) are respectively thickened. In the state extended in the direction W, it joins by the notch junction parts 24 and 66-68 (refer FIG. 12C). As a result, the four three-dimensionally shaped parts 22 and 70 to 72 are formed at the four corners of the inflating part 17. When the three-dimensionally shaped portions 22 and 70 to 72 are three-dimensionally inflated in the thickness direction W, the airbag 10 and the inflatable portion 17 are inflated to a predetermined thickness.

ここでは、第１の立体形状部２２は、凹形状の一対の切欠き部２０、２１からなり、膨張部１７の頂部に形成される。第２の立体形状部７０は、Ｖ字状の一対の切欠き部６０、６１からなり、膨張部１７の前部における上下方向の中間に形成される。第３の立体形状部７１は、Ｖ字状の一対の切欠き部６２、６３からなり、膨張部１７の底部における前方に形成される。第４の立体形状部７２は、凹形状の一対の切欠き部６４、６５からなり、膨張部１７の底部における後方に形成される。第３の立体形状部７１と第４の立体形状部７２の間の部分が、膨張部１７の底面になっている。   Here, the first three-dimensional shape portion 22 includes a pair of concave cutout portions 20 and 21 and is formed on the top portion of the inflating portion 17. The second three-dimensionally shaped portion 70 includes a pair of V-shaped cutout portions 60 and 61 and is formed in the middle of the front portion of the inflating portion 17 in the vertical direction. The third three-dimensional shape portion 71 includes a pair of V-shaped cutout portions 62 and 63 and is formed in front of the bottom portion of the expansion portion 17. The fourth three-dimensional shape portion 72 includes a pair of concave cutout portions 64 and 65 and is formed at the rear of the bottom portion of the inflatable portion 17. A portion between the third three-dimensional shape portion 71 and the fourth three-dimensional shape portion 72 is the bottom surface of the inflating portion 17.

エアバッグ１０に複数の立体形状部２２、７０〜７２を形成するときには、エアバッグ１０の縮みを一層抑制することができる。また、エアバッグ１０が、早く、かつ、安定して展開するため、エアバッグ１０の衝撃吸収特性を確実に発揮させることができる。エアバッグ１０が胴体９２の側方で正確に膨張するため、エアバッグ１０により乗員９０の衝撃を確実に吸収できる。   When the plurality of three-dimensionally shaped portions 22 and 70 to 72 are formed on the airbag 10, shrinkage of the airbag 10 can be further suppressed. In addition, since the airbag 10 is deployed quickly and stably, the impact absorbing characteristics of the airbag 10 can be reliably exhibited. Since the airbag 10 is accurately inflated on the side of the fuselage 92, the airbag 10 can reliably absorb the impact of the occupant 90.

１・・・サイドエアバッグ装置、２・・・固定部材、３・・・インフレータ、１０・・・エアバッグ、１１・・・ベントホール、１２・・・表基布、１３・・・裏基布、１４・・・周縁接合部、１５・・・周縁部、１６・・・気室、１７・・・膨張部、１７Ａ・・・上部膨張部、１８・・・スリット、１９・・・周縁部、２０、２１・・・切欠き部、２２・・・立体形状部、２３・・・開口部、２４・・・切欠き接合部、３０・・・立体形状部、３１、３２・・・切欠き部、３３・・・切欠き接合部、３４・・・立体形状部、３５、３６・・・切欠き部、３７・・・切欠き接合部、４０・・・立体形状部、４１、４２・・・切欠き部、４３・・・切欠き接合部、４４・・・立体形状部、４５、４６・・・切欠き部、４７・・・切欠き接合部、５０・・・立体形状部、５１、５２・・・切欠き部、５３・・・切欠き接合部、６０〜６５・・・切欠き部、６６〜６８・・・切欠き接合部、７０〜７２・・・立体形状部、８０・・・シート、８１・・・シートクッション、８２・・・シートバック、８３・・・ヘッドレスト、８４・・・側部、８５・・・側壁、８６・・・側方空間、９０・・・乗員、９１・・・肩、９２・・・胴体、９３・・・胸部、９４・・・腰部、９５・・・上腕、９６・・・肋骨。   DESCRIPTION OF SYMBOLS 1 ... Side airbag apparatus, 2 ... Fixing member, 3 ... Inflator, 10 ... Air bag, 11 ... Vent hole, 12 ... Front base fabric, 13 ... Back base Cloth, 14 ... Peripheral joint part, 15 ... Peripheral part, 16 ... Air chamber, 17 ... Inflating part, 17A ... Upper inflating part, 18 ... Slit, 19 ... Peripheral , 20, 21 ... notched portion, 22 ... three-dimensional shaped portion, 23 ... opening, 24 ... notched joining portion, 30 ... three-dimensional shaped portion, 31, 32 ... Notch part, 33 ... Notch joint part, 34 ... Solid shape part, 35, 36 ... Notch part, 37 ... Notch joint part, 40 ... Solid shape part, 41, 42 ... Notch part, 43 ... Notch joint part, 44 ... Solid shape part, 45, 46 ... Notch part, 47 ... Notch joint part, 0 ... Solid shape part, 51, 52 ... Notch part, 53 ... Notch joint part, 60-65 ... Notch part, 66-68 ... Notch joint part, 70- 72 ... Solid shape part, 80 ... Seat, 81 ... Seat cushion, 82 ... Seat back, 83 ... Headrest, 84 ... Side part, 85 ... Side wall, 86 ... -Side space, 90 ... passenger, 91 ... shoulder, 92 ... trunk, 93 ... chest, 94 ... waist, 95 ... upper arm, 96 ... rib.

Claims (6)

シートに着座した乗員と車両の側壁の間において乗員を保護するサイドエアバッグ装置であって、
ガスを発生するインフレータと、ガスにより膨張展開して乗員の肩より下の胴体を保護するエアバッグを備え、
エアバッグが、対向する基布を接合して形成された膨張部と、対向する基布の周縁部の一部に形成されて膨張部の周縁部に位置する立体形状部を有し、
エアバッグの対向する基布が、各周縁部の一部において重なり合う位置に形成され、膨張部の厚さ方向に伸ばした状態で接合された一対の切欠き部を有し、
エアバッグの立体形状部が、接合された一対の切欠き部により膨張部の厚さ方向に立体的に形成されたサイドエアバッグ装置。 A side airbag device that protects an occupant between an occupant seated on a seat and a side wall of the vehicle,
An inflator that generates gas, and an airbag that inflates and deploys with gas to protect the trunk below the passenger's shoulders,
The airbag has an inflatable portion formed by joining opposing base fabrics, and a three-dimensional shape portion formed on a part of the peripheral portion of the opposing base fabric and positioned at the peripheral portion of the inflatable portion,
The opposing fabric of the airbag is formed at a position where it overlaps at a part of each peripheral portion, and has a pair of cutout portions joined in a state of extending in the thickness direction of the inflating portion,
A side airbag device in which a three-dimensional shape portion of an airbag is three-dimensionally formed in a thickness direction of an inflating portion by a pair of joined notches. 請求項１に記載されたサイドエアバッグ装置において、
エアバッグの膨張部が、上方に向かって次第に細くなる上部膨張部を有し、
エアバッグの立体形状部が、上部膨張部の頂部に形成されたサイドエアバッグ装置。 In the side airbag device according to claim 1,
The inflatable part of the airbag has an upper inflating part that gradually becomes thinner upward,
A side airbag device in which the three-dimensional shape portion of the airbag is formed at the top of the upper inflating portion. 請求項２に記載されたサイドエアバッグ装置において、
エアバッグの上部膨張部が、乗員の上腕の背面に沿って上方に展開するサイドエアバッグ装置。 In the side airbag device according to claim 2,
A side airbag device in which an upper inflating portion of an airbag is deployed upward along the back surface of the upper arm of the occupant. 請求項１ないし３のいずれかに記載されたサイドエアバッグ装置において、
エアバッグの立体形状部が、膨張部の１つ又は複数の角部に形成されたサイドエアバッグ装置。 In the side airbag device according to any one of claims 1 to 3,
A side airbag device in which a three-dimensional shape part of an airbag is formed at one or a plurality of corners of an inflating part. 請求項１ないし４のいずれかに記載されたサイドエアバッグ装置において、
各基布の切欠き部が、一対の切欠き部を接合するときに、重ねられて接合された一対の縁部を有するサイドエアバッグ装置。 In the side airbag device according to any one of claims 1 to 4,
The side airbag apparatus which has a pair of edge part which the notch part of each base fabric overlapped and joined when joining a pair of notch part. 請求項５に記載されたサイドエアバッグ装置において、
一対の縁部が、２つの直線部からなる屈曲形状に形成されたサイドエアバッグ装置。 In the side airbag device according to claim 5,
A side airbag device in which a pair of edges are formed in a bent shape composed of two straight portions.
JP2012088744A 2012-04-09 2012-04-09 Side airbag apparatus Pending JP2013216211A (en)

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DE102014002536A1 (en) * 2014-02-21 2015-08-27 Audi Ag Side airbag for vehicles
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JPH0811658A (en) * 1994-07-01 1996-01-16 Toyoda Gosei Co Ltd Manufacture of air bag
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JP2010215104A (en) * 2009-03-17 2010-09-30 Nippon Plast Co Ltd Airbag
JP2011025909A (en) * 2009-07-03 2011-02-10 Toyoda Gosei Co Ltd Side airbag device

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KR20170109639A (en) 2015-03-30 2017-09-29 오토리브 디벨로프먼트 에이비 Side airbag device for vehicle
US10625703B2 (en) 2015-03-30 2020-04-21 Autoliv Development Ab Side air bag device for vehicle
WO2020162065A1 (en) * 2019-02-09 2020-08-13 オートリブ ディベロップメント エービー Side airbag device
JPWO2020162065A1 (en) * 2019-02-09 2021-10-07 オートリブ ディベロップメント エービー Side airbag device
JP7100163B2 (en) 2019-02-09 2022-07-12 オートリブ ディベロップメント エービー Side airbag device
US11752966B2 (en) 2019-02-09 2023-09-12 Autoliv Development Ab Side airbag device

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