JPH11129845A - Air bag body for air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate apprehension causing a thread cut and cloth cut in a sewn mounting part when a air bag body is extended and inflated, improve mounting strength, and eliminate apprehension increasing a number of processes of sewing to improve work efficiency. SOLUTION: In a side of an inflow port 17 of a main/side base cloth 13, 15 of an air bag body 11, a plurality of cylindrical mounting parts 21, 23 are formed. In the main base cloth 13 adjacent to the mounting part 21, 23, an extension part 25, 27 protruded to an outer side from a sewing margin 31, 32 is formed. The sewing margin 31, 32 of the main base cloth 13 and a sewing margins 34, 35 of the side base cloth 15 are sewn, and a first sewn mounting parts 41, 42 are formed. The extension parts 25, 27 of the main base cloth 13 are overlapped to be sewn in a side of the side base cloth 15, and a second sewn mounting part 44 is formed.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、自動車の衝突の際
に乗員を保護するエアバッグ装置のエアバッグ本体に関
し、更に詳細に説明すると、複数の基布を縫着して袋状
に形成され、ガス発生器からのガスが流入するための流
入口が形成されたエアバッグ装置のエアバッグ本体に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag body of an airbag device for protecting an occupant in the event of an automobile collision. More specifically, the present invention relates to an airbag body formed by sewing a plurality of base cloths into a bag shape. The present invention relates to an airbag body of an airbag device in which an inflow port through which gas from a gas generator flows is formed.

【０００２】[0002]

【従来の技術】従来より、自動車の乗員の保護装置とし
てエアバッグ装置が知られている。このエアバッグ装置
としてはインストルメントパネルやステアリングに取付
けられるものの他、ドアやシートバック等に取付けられ
るものが知られている。エアバッグ装置が衝撃を感知し
た場合にガス発生器が作動し、ガスが瞬間的にエアバッ
グ本体内に流入し、エアバッグ本体を瞬時に乗員側に膨
出させるようになされている。2. Description of the Related Art Conventionally, an airbag device has been known as a device for protecting a vehicle occupant. As the airbag device, there is known an airbag device which is attached to an instrument panel or a steering wheel, or a door or a seat back. When an impact is detected by the airbag device, the gas generator is activated, and the gas instantaneously flows into the airbag body and instantaneously inflates the airbag body toward the occupant.

【０００３】また、実開平４−９３２４３号公報には、
図８に示す如く、車両用エアバッグとして、折畳み収容
容積を小さくすると共に、エアバッグケースに対するエ
アバッグの装着性を向上させる構成が示されており、こ
の従来のエアバッグ装置のエアバッグはＵ字状に折曲さ
れた本体布１と、この本体布１の側部に夫々縫着された
側面布２とによりエアバッグ本体を形成し、開口部３に
リテーナ７の取付部４，５が形成されている。またコー
ティング布６を設けた構成が示されている。Further, Japanese Utility Model Laid-Open No. 4-93243 discloses that
As shown in FIG. 8, as a vehicle airbag, a configuration is shown in which the folding accommodation volume is reduced and the ease of mounting the airbag on the airbag case is improved. An airbag body is formed by the main body cloth 1 bent in a letter shape and the side cloths 2 sewn to the sides of the main body cloth 1, respectively, and the mounting portions 4 and 5 of the retainer 7 are formed in the openings 3 respectively. Is formed. Further, a configuration in which the coating cloth 6 is provided is shown.

【０００４】前記、開口部３の取付部４，５は本体布１
の先端部及び側面布２の先端部を独立状態で折り返し縫
着して袋状の取付部４，５を形成しているものである。
また本体布１の先端部及び側面布２の先端部の折り返し
た先端側にコーティング布６の延設部６ａを形成し、こ
の延設部６ａを隣接する側面布２側に重ね縫いをしてい
る。The mounting portions 4 and 5 of the opening 3 are attached to the main body cloth 1.
And the front end of the side cloth 2 is folded back and sewn in an independent state to form the bag-like mounting portions 4 and 5.
Further, an extended portion 6a of the coating cloth 6 is formed on the folded front end side of the front end portion of the main body cloth 1 and the front end portion of the side cloth 2, and the extended portion 6a is sewn on the adjacent side cloth 2 side. I have.

【０００５】[0005]

【発明が解決しようとする課題】然し乍ら、実開平４−
９３２４３号公報に示されるエアバッグ本体の場合に
は、エアバッグ本体の取付部４，５が独立して隅を縫着
しており、エアバッグ本体の展開膨出時に本体布１及び
側面布２の縫着部の取付部４，５縁に局部的な引張力が
加わり、縫製糸の糸切れや布地切れを起こす虞れを有し
ていた。SUMMARY OF THE INVENTION
In the case of the airbag body disclosed in JP-A-93243, the mounting portions 4 and 5 of the airbag body are independently sewn at the corners. There is a fear that a local tensile force is applied to the edges of the attachment portions 4 and 5 of the sewn portion, thereby causing breakage of the sewing thread or fabric.

【０００６】また、延設部６ａを隣接する側面布２側に
重ね縫いをする場合には、縫着部位がエアバッグ本体の
本体布１及び側面布２同士の縫着全てに必要となり、工
程数が増大し、作業能率を向上させることができない欠
点を有していた。In the case where the extension portion 6a is sewn on the adjacent side cloth 2, the sewn portion is required for all sewing between the main cloth 1 and the side cloth 2 of the airbag body. There was a drawback that the number increased and the working efficiency could not be improved.

【０００７】本発明の目的は、エアバッグ本体の展開膨
出時に縫着部が糸切れや布地切れを起こす虞れがなく、
取付強度を向上させることができ、然も工程数が増大す
る虞れがなく、作業能率を向上させることができるエア
バッグ装置のエアバッグ本体を提供するものである。SUMMARY OF THE INVENTION It is an object of the present invention to prevent the sewing portion from breaking a thread or a fabric when the airbag body is deployed and inflated.
It is an object of the present invention to provide an airbag body of an airbag device that can improve the mounting strength, does not increase the number of steps, and can improve the work efficiency.

【０００８】[0008]

【課題を解決するための手段】本発明は上述せる課題に
鑑みてなされたもので、本発明の請求項１に記載のエア
バッグ装置のエアバッグ本体は、複数の基布を縫着して
袋状に形成され、ガス発生器からのガスが流入するため
の流入口が形成されたエアバッグ装置のエアバッグ本体
において、前記エアバッグ本体の流入口側に筒状の複数
の取付部が形成され、該取付部と近接する複数の基布に
縫い代より外側に突出する延設部が形成され、一方の基
布の縫い代と他方の基布の縫い代とを縫着して第１の縫
着部が形成され、一方の基布の延設部を他方の基布側に
重ね縫いして第２の縫着部が形成されていることを特徴
とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an airbag body of an airbag device according to the first aspect of the present invention is formed by sewing a plurality of base cloths. In the airbag body of the airbag device formed in a bag shape and formed with an inflow port for inflow of gas from a gas generator, a plurality of tubular mounting portions are formed on the inflow side of the airbag body. A plurality of base cloths protruding outward from the sewing allowance are formed on the plurality of base cloths adjacent to the mounting part, and the sewing allowance of one base cloth and the sewing allowance of the other base cloth are sewn to form a first sewing. And a second sewn portion is formed by sewn the extended portion of one base cloth on the other base cloth side.

【０００９】本発明の請求項２に記載のエアバッグ装置
のエアバッグ本体は、メイン基布と、該メイン基布に縫
着されるサイド基布とから袋状に形成され、ガス発生器
からのガスが流入するための流入口が形成されたエアバ
ッグ装置のエアバッグ本体において、前記エアバッグ本
体のメイン基布とサイド基布の流入口側に筒状の複数の
取付部が形成され、該取付部と近接するメイン基布に縫
い代より外側に突出する延設部が形成され、メイン基布
の縫い代とサイド基布の縫い代とを縫着して第１の縫着
部が形成され、メイン基布の延設部をサイド基布側に重
ね縫いして第２の縫着部が形成されていることを特徴と
する。The airbag body of the airbag device according to the second aspect of the present invention is formed in a bag shape from a main base cloth and a side base cloth sewn to the main base cloth. In the airbag body of the airbag device in which an inflow port for inflow of the gas is formed, a plurality of cylindrical mounting portions are formed on the inflow side of the main base cloth and the side base cloth of the airbag body, An extension portion protruding outward from the sewing allowance is formed in the main base cloth adjacent to the attachment part, and a first sewing part is formed by sewing the sewing allowance of the main base cloth and the sewing allowance of the side base cloth, The extended portion of the main base fabric is overlapped and sewn on the side base fabric side to form a second sewn portion.

【００１０】本発明の請求項３に記載のエアバッグ装置
のエアバッグ本体は、略Ｕ字状に弯曲したメイン基布
と、該メイン基布の略Ｕ字状の両側部に縫着されるサイ
ド基布とから袋状に形成され、ガス発生器からのガスが
流入するための流入口が形成されたエアバッグ装置のエ
アバッグ本体において、前記エアバッグ本体のメイン基
布とサイド基布の流入口側に筒状の取付部が夫々形成さ
れ、前記メイン基布の取付部と近接するメイン基布に縫
い代より外側に突出する延設部が形成され、メイン基布
の縫い代とサイド基布の縫い代とを夫々縫着して第１の
縫着部が形成され、メイン基布の延設部をサイド基布側
に重ね縫いして第２の縫着部が形成されていることを特
徴とする。The airbag body of the airbag device according to the third aspect of the present invention is sewn to a main base cloth curved in a substantially U-shape and to both sides of the main base cloth in a substantially U-shape. In the airbag body of the airbag device, which is formed in a bag shape from the side base cloth and in which an inflow port for inflow of gas from the gas generator is formed, the main base cloth and the side base cloth of the airbag main body are formed. A tubular attachment portion is formed on the inflow side, and an extension portion protruding outward from a seam allowance is formed on the main base cloth adjacent to the attachment portion of the main base cloth, and a seam allowance of the main base cloth and a side base cloth are formed. And a first sewn portion is formed by sewing each of the seam allowances, and a second sewn portion is formed by sewn the extended portion of the main base fabric on the side base fabric side. And

【００１１】本発明の請求項４に記載のエアバッグ装置
のエアバッグ本体は、略Ｕ字状に弯曲したメイン基布
と、該メイン基布の略Ｕ字状の両側部に縫着されるサイ
ド基布とから袋状に形成され、ガス発生器からのガスが
流入するための流入口が形成されるエアバッグ装置のエ
アバッグ本体において、前記エアバッグ本体のメイン基
布とサイド基布の流入口側に筒状の取付部が夫々形成さ
れ、前記メイン基布の取付部と近接するメイン基布に縫
い代より外側に突出する延設部が夫々形成され、メイン
基布の縫い代とサイド基布の縫い代とを縫着して第１の
縫着部が形成され、メイン基布の延設部を夫々サイド基
布側に重ね、メイン基布の延設部同士及びサイド基布を
重ね縫いして第２の縫着部が夫々形成されていることを
特徴とする。[0011] The airbag body of the airbag device according to the fourth aspect of the present invention is sewn to a substantially U-shaped main base cloth and to both sides of the substantially U-shaped main base cloth. In the airbag body of the airbag device, which is formed in a bag shape from the side base cloth and an inlet for gas from the gas generator is formed, the main base cloth and the side base cloth of the airbag body are formed. Cylindrical mounting portions are formed on the inflow side, respectively, and extended portions protruding outward from the sewing allowance are formed on the main base cloth adjacent to the mounting portion of the main base cloth, respectively. A first sewn portion is formed by sewing the seam allowance of the cloth, the extended portions of the main base fabric are respectively overlapped on the side base fabric side, and the extended portions of the main base fabric and the side base fabric are overlapped and stitched. The second sewn portions are formed respectively.

【００１２】本発明の請求項５に記載のエアバッグ装置
のエアバッグ本体は、前記エアバッグ本体を構成する複
数の基布が経緯糸の打ち込み本数が略１対１の平織り布
から形成され、前記一方の基布の延設部の織り目方向に
対して重ね縫いされる他方の基布の織り目方向がバイア
ス方向に形成されていることを特徴とする。According to a fifth aspect of the present invention, there is provided the airbag body of the airbag device, wherein the plurality of base fabrics constituting the airbag body are formed of a plain woven fabric having approximately one to one warp yarns. The texture direction of the other base fabric which is sewn on the extended portion of the one base fabric in the bias direction is formed in the bias direction.

【００１３】本発明の請求項１に記載のエアバッグ装置
のエアバッグ本体によれば、エアバッグ本体の流入口側
に筒状の複数の取付部が形成され、該取付部と近接する
複数の基布に縫い代より外側に突出する延設部が形成さ
れ、一方の基布の縫い代と他方の基布の縫い代とを縫着
して第１の縫着部が形成され、一方の基布の延設部を他
方の基布側に重ね縫いして第２の縫着部が形成されてい
るので、エアバッグ本体の展開膨出時に第１及び第２の
縫着部が糸切れや布地切れを起こす虞れがなく、取付強
度を向上させることができ、然も工程数が増大する虞れ
がなく、作業能率を向上させることができる。[0013] According to the airbag body of the airbag device according to the first aspect of the present invention, a plurality of cylindrical attachment portions are formed on the inflow side of the airbag body, and the plurality of attachment portions adjacent to the attachment portion are formed. An extended portion protruding outward from the sewing allowance is formed in the base cloth, and a first sewing part is formed by sewing the sewing allowance of one base cloth and the sewing allowance of the other base cloth. The second sewn portion is formed by overlapping and sewn the extended portion on the other side of the base cloth, so that the first and second sewn portions are broken or broken when the airbag body is deployed and inflated. And the mounting strength can be improved, and the number of steps does not increase, and the working efficiency can be improved.

【００１４】本発明の請求項２に記載のエアバッグ装置
のエアバッグ本体によれば、エアバッグ本体のメイン基
布とサイド基布の流入口側に筒状の複数の取付部が形成
され、該取付部と近接するメイン基布に縫い代より外側
に突出する延設部が形成され、メイン基布の縫い代とサ
イド基布の縫い代とを縫着して第１の縫着部が形成さ
れ、メイン基布の延設部をサイド基布側に重ね縫いして
第２の縫着部が形成されているので、エアバッグ本体の
展開膨出時にメイン基布とサイド基布の第１及び第２の
縫着部が糸切れや布地切れを起こす虞れがなく、取付強
度を向上させることができ、然も工程数が増大する虞れ
がなく、作業能率を向上させることができる。According to the airbag body of the airbag device according to the second aspect of the present invention, a plurality of cylindrical mounting portions are formed on the inflow side of the main base cloth and the side base cloth of the airbag main body, An extension portion protruding outward from the sewing allowance is formed in the main base cloth adjacent to the attachment part, and a first sewing part is formed by sewing the sewing allowance of the main base cloth and the sewing allowance of the side base cloth, Since the extended portion of the main base fabric is overlapped and sewn on the side base fabric side to form the second sewn portion, when the airbag body is deployed and inflated, the first and second base fabrics and the side base fabric are first and second. There is no danger that the sewing portion 2 will break the thread or the cloth, the mounting strength can be improved, and, of course, there is no danger that the number of steps will increase, and the work efficiency can be improved.

【００１５】本発明の請求項３に記載のエアバッグ装置
のエアバッグ本体によれば、エアバッグ本体のメイン基
布とサイド基布の流入口側に筒状の取付部が夫々形成さ
れ、前記メイン基布の取付部と近接するメイン基布に縫
い代より外側に突出する延設部が形成され、メイン基布
の縫い代とサイド基布の縫い代とを夫々縫着して第１の
縫着部が形成され、メイン基布の延設部をサイド基布側
に重ね縫いして第２の縫着部が形成されているので、エ
アバッグ本体の展開膨出時にメイン基布とサイド基布の
第１及び第２の縫着部が糸切れや布地切れを起こす虞れ
がなく、取付強度を向上させることができ、然も工程数
が増大する虞れがなく、作業能率を向上させることがで
きる。According to the airbag body of the airbag device according to the third aspect of the present invention, the airbag body has a cylindrical mounting portion formed at the inlet side of the main base cloth and the side base cloth, respectively. An extension portion protruding outward from the sewing allowance is formed on the main base cloth adjacent to the mounting part of the main base cloth, and a sewing allowance of the main base cloth and a sewing allowance of the side base cloth are sewn, respectively, to form a first sewing part. Is formed, and the extended portion of the main base fabric is overlapped and sewn on the side base fabric side to form the second sewn portion. Therefore, when the airbag body is deployed and inflated, the main base fabric and the side base fabric are separated from each other. There is no possibility that the first and second sewn portions may break the thread or the fabric, so that the mounting strength can be improved. Further, there is no possibility that the number of steps increases, and the work efficiency can be improved. it can.

【００１６】本発明の請求項４に記載のエアバッグ装置
のエアバッグ本体によれば、エアバッグ本体のメイン基
布とサイド基布の流入口側に筒状の取付部が夫々形成さ
れ、前記メイン基布の取付部と近接するメイン基布に縫
い代より外側に突出する延設部が夫々形成され、メイン
基布の縫い代とサイド基布の縫い代とを縫着して第１の
縫着部が形成され、上下のメイン基布の延設部を夫々サ
イド基布側に重ね、上下のメイン基布の延設部同士及び
サイド基布を重ね縫いして第２の縫着部が夫々形成され
ているので、エアバッグ本体の展開膨出時にメイン基布
とサイド基布の第１及び第２の縫着部が糸切れや布地切
れを起こす虞れがなく、取付強度を向上させることがで
き、然も工程数が増大する虞れがなく、作業能率を向上
させることができる。According to the airbag body of the airbag device according to the fourth aspect of the present invention, the airbag body is formed with a cylindrical mounting portion at the inlet side of the main base cloth and the side base cloth, respectively. An extension portion protruding outward from the sewing allowance is formed on the main base cloth adjacent to the attachment part of the main base cloth, and the sewing allowance of the main base cloth and the sewing allowance of the side base cloth are sewn. Are formed, and the extended portions of the upper and lower main base fabrics are respectively overlapped on the side base fabric side, and the extended portions of the upper and lower main base fabrics and the side base fabrics are sewn together to form second sewn portions. Since the first and second sewn portions of the main base cloth and the side base cloth are not broken at the time of deployment and inflation of the airbag main body, there is no possibility of thread breakage or cloth breakage, and the mounting strength can be improved. It is possible to improve the work efficiency without increasing the number of processes. .

【００１７】本発明の請求項５に記載のエアバッグ装置
のエアバッグ本体によれば、前記エアバッグ本体を構成
する複数の基布が経緯糸の打ち込み本数が略１対１の平
織り布から形成され、前記一方の基布の延設部の織り目
方向に対して重ね縫いされる他方の基布の織り目方向が
バイアス方向に形成されているので、エアバッグ本体の
展開膨出時に第１及び第２の縫着部が糸切れや布地切れ
を起こす虞れがなく、取付強度を向上させることができ
る。According to the airbag body of the airbag device according to the fifth aspect of the present invention, the plurality of base fabrics constituting the airbag body are formed of a plain woven fabric having approximately one to one warp yarns. Since the texture direction of the other fabric sewn on the extended portion of the one fabric is overlapped with the texture direction of the other fabric, the first and second fabrics are sewn when the airbag body is deployed and inflated. There is no fear that the sewing portion 2 may break the thread or the fabric, and the mounting strength can be improved.

【００１８】[0018]

【発明の実施の形態】以下本発明に係るエアバッグ装置
のエアバッグ本体を図面を参照して詳述する。図１乃至
図７には、本発明に係わるエアバッグ装置のエアバッグ
本体の実施の形態が夫々示されており、エアバッグ本体
１１は略Ｕ字状に弯曲されるメイン基布１３と、該メイ
ン基布１３の略Ｕ字状の両側部に縫着されるサイド基布
１５とから袋状に形成され、図示を省略したガス発生器
からのガスが流入するための流入口１７が袋状部の先端
側に形成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an airbag body of an airbag device according to the present invention will be described in detail with reference to the drawings. 1 to 7 each show an embodiment of an airbag main body of an airbag apparatus according to the present invention. An airbag main body 11 includes a main base cloth 13 curved in a substantially U shape, A side base fabric 15 sewn to both sides of the substantially U-shaped main base fabric 13 is formed in a bag shape, and an inflow port 17 through which gas from a gas generator (not shown) flows is formed in a bag shape. It is formed on the tip side of the part.

【００１９】尚、エアバッグ本体１１は複数の基布を縫
着して袋状に形成されるものであってもよく、例えば取
付側基布と乗員側基布とを用い、取付側基布を複数に分
割した分割基布を縫製して形成したものであってもよ
い。The airbag body 11 may be formed in a bag shape by sewing a plurality of base cloths. For example, the airbag body 11 may be formed using a mounting base cloth and an occupant base cloth. May be formed by sewing a divided base cloth obtained by dividing into a plurality of pieces.

【００２０】図１乃至図３に示す如く、前記エアバッグ
本体１１のメイン基布１３とサイド基布１５の流入口１
７側に筒状の複数の取付部２１，２３が形成され、これ
らの取付部２１，２３と近接するメイン基布１３に通常
の縫い代より外側に突出する延設部２５，２７が形成さ
れている。尚、この延設部２５，２７は何れか一方のみ
設けるものであってもよい。As shown in FIGS. 1 to 3, the main fabric 13 of the airbag body 11 and the inlet 1 of the side fabric 15 are provided.
A plurality of tubular attachment portions 21 and 23 are formed on the 7 side, and extended portions 25 and 27 projecting outward from a normal sewing allowance are formed on the main base cloth 13 adjacent to these attachment portions 21 and 23. I have. The extension portions 25 and 27 may be provided in only one of them.

【００２１】前記取付部２１，２３は長方形状で、左右
の短辺の長さが６０mm程度になるように四隅を縫製して
筒状に形成されている。この取付部２１，２３にリテー
ナが挿通されガス発生器の収納容器等にボルト止めされ
る。The mounting portions 21 and 23 have a rectangular shape, and are formed in a cylindrical shape by sewing four corners so that the short sides on the left and right sides are about 60 mm. A retainer is inserted through the mounting portions 21 and 23 and is bolted to a storage container or the like of the gas generator.

【００２２】図２及び図５（ａ），（ｂ）示す如く、前
記メイン基布１３は略Ｕ字状に弯曲されるので、上下の
メイン基布１３ａ，１３ｂが１枚のメイン基布１３より
形成され、上下のメイン基布１３ａ，１３ｂの両側部の
縫い代３１，３２とサイド基布１５の縫い代３４，３５
とを縫着して第１の縫着部４１，４２が形成されてい
る。As shown in FIGS. 2 and 5 (a) and 5 (b), the main base cloth 13 is bent in a substantially U-shape, so that the upper and lower main base cloths 13a and 13b are formed into one main base cloth 13. The seam allowances 31 and 32 on both sides of the upper and lower main base fabrics 13a and 13b and the seam allowances 34 and 35 on the side base fabric 15 are formed.
And first sewn portions 41 and 42 are formed.

【００２３】この第１の縫着部４１，４２は二重縫いに
より形成されているが、二重縫いに限定されるものでは
なく、一本縫いまたは三重以上であってもよい。The first sewn portions 41 and 42 are formed by double stitching, but are not limited to double stitching, and may be single stitching or triple or more stitching.

【００２４】また、上下のメイン基布１３ａ，１３ｂの
延設部２５，２７を夫々サイド基布１５側に重ね、上下
のメイン基布１３ａ，１３ｂの延設部２５，２７同士及
びサイド基布１５の縫い代３４，３５を重ね縫いして第
２の縫着部４４が形成されている。Further, the extending portions 25, 27 of the upper and lower main base fabrics 13a, 13b are respectively overlapped on the side base fabric 15 side, and the extending portions 25, 27 of the upper and lower main base fabrics 13a, 13b are connected to each other and the side base fabrics. A second sewn portion 44 is formed by overlappingly sewn 15 sewing allowances 34 and 35.

【００２５】この第２の縫着部４４は一本縫いにより形
成されているが、二重縫い以上であってもよい。またサ
イド基布１５と重なるメイン基布１３ａ，１３ｂの両側
部の縫い代３１，３２は１つのパターンで縫着する。自
動機ミシンの縫製範囲が許容されるならば２つ以上のパ
ターンに分けてもよい。The second sewn portion 44 is formed by single stitching, but may be formed by double stitching or more. The seam allowances 31 and 32 on both sides of the main base cloths 13a and 13b overlapping the side base cloth 15 are sewn in one pattern. If the sewing range of the automatic sewing machine is permitted, the sewing machine may be divided into two or more patterns.

【００２６】図３に示す如く、前記エアバッグ本体１１
を構成する複数の基布、即ちメイン基布１３とサイド基
布１５が経緯糸の打ち込み本数が略１対１の平織り布か
ら形成されている。As shown in FIG.
The main fabric 13 and the side fabric 15 are formed of a plain woven fabric having approximately one to one warp yarns.

【００２７】前記一方の基布、例えばメイン基布１３
ａ，１３ｂの延設部２５，２７の織り目方向に対して重
ね縫いされる他方の基布、例えばサイド基布１５の織り
目方向がバイアス方向に形成されている。このバイアス
方向に織り目が形成されることにより、サイド基布１５
の縫い代３４，３５に積極的に引裂力が分散される。The one base cloth, for example, the main base cloth 13
The other base cloth, for example, the side base cloth 15, which is sewn with respect to the weave direction of the extending portions 25, 27 of the a, 13b, is formed in the bias direction. By forming the texture in the bias direction, the side base cloth 15 is formed.
The tearing force is positively dispersed in the seam allowances 34 and 35 of FIG.

【００２８】尚、本実施の形態では、４５°のバイアス
で形成したが、バイアスが３０°〜６０°であってもよ
い。またメイン基布１３とサイド基布１５の織り目方向
を夫々逆構成とすることができる。In this embodiment, the bias is formed at 45 °, but the bias may be 30 ° to 60 °. Further, the texture directions of the main base cloth 13 and the side base cloth 15 can be reversed.

【００２９】図４（ａ）に示す実施の形態では、上下の
メイン基布１３ａ，１３ｂの延設部２５，２７の構成が
図２に示すものと同一の構成であるが、サイド基布１５
の縫い代３４，３５が折り返された状態で、サイド基布
１５の縫い代３４，３５が第２の縫着部４４として一体
に縫着されていないもので、サイド基布１５と上下のメ
イン基布１３ａ，１３ｂの延設部２５，２７とが第２の
縫着部４４として一体に縫着されているものである。In the embodiment shown in FIG. 4A, the construction of the extending portions 25 and 27 of the upper and lower main fabrics 13a and 13b is the same as that shown in FIG.
The seam allowances 34 and 35 of the side base cloth 15 are not integrally sewn as the second sewn portions 44 in a state where the seam allowances 34 and 35 are folded back. The extended portions 25 and 27 of 13a and 13b are integrally sewn as a second sewn portion 44.

【００３０】図４（ｂ）に示す実施の形態では、上下の
メイン基布１３ａ，１３ｂの延設部２５，２７の構成が
図２及び図４（ａ）に示すものと同一の構成であるが、
サイド基布１５の縫い代３４，３５が折り返されていな
い状態で、サイド基布１５の縫い代３４，３５が第２の
縫着部４４として一体に縫着されていないもので、サイ
ド基布１５と上下のメイン基布１３ａ，１３ｂの延設部
２５，２７とが第２の縫着部４４として一体に縫着され
ているものである。In the embodiment shown in FIG. 4B, the configuration of the extending portions 25 and 27 of the upper and lower main base fabrics 13a and 13b is the same as that shown in FIGS. 2 and 4A. But,
The seam allowances 34 and 35 of the side base cloth 15 are not folded back, and the seam allowances 34 and 35 of the side base cloth 15 are not integrally sewn as the second sewn portions 44. The extended portions 25 and 27 of the upper and lower main base fabrics 13a and 13b are integrally sewn as a second sewn portion 44.

【００３１】図５（ａ），（ｂ）には、本発明のメイン
基布１３ａの両側部の縫い代３１とサイド基布１５の縫
い代３４とを縫着して第１の縫着部４１が形成されてい
る状態が夫々示されており、図５（ａ）には、両端部を
揃えて内側に屈折させた状態で第１の縫着部４１が形成
されているものであり、また図５（ｂ）には、両端部を
揃えずに、端部を重ね合わせた状態で第１の縫着部４１
が形成されているものである。FIGS. 5A and 5B show a first sewing portion 41 obtained by sewing the seam allowance 31 on both sides of the main fabric 13a of the present invention and the seam allowance 34 of the side fabric 15. FIG. FIG. 5A shows a state in which the first sewn portion 41 is formed in a state where both ends are aligned and bent inward. FIG. 5 (b) shows the first sewn portion 41 in a state where both ends are not aligned and the ends are overlapped.
Are formed.

【００３２】前記エアバッグ本体１１が有事に作動展開
すると、ガス発生器から発生したガスがエアバッグ本体
１１内に供給される。エアバッグ本体１１の圧力が上昇
すると共に、取付部２１，２３の四辺が独立しているた
め、四隅の隙間からガスが漏れ出す。この時、取付部２
１，２３の四隅に引裂力がかかり、メイン基布１３とサ
イド基布１５の縫着部に引裂力が集中しようとするが、
上下のメイン基布１３ａ，１３ｂの延設部２５，２７が
サイド基布１５側で第２の縫着部４４により縫製されて
いるので、サイド基布１５に引裂力が分散される。When the airbag body 11 is activated and deployed, the gas generated from the gas generator is supplied into the airbag body 11. Since the pressure of the airbag body 11 increases and the four sides of the mounting portions 21 and 23 are independent, gas leaks from the gaps at the four corners. At this time, the mounting part 2
The tearing force is applied to the four corners of 1, 23, and the tearing force tends to concentrate on the sewn portion of the main base cloth 13 and the side base cloth 15,
Since the extending portions 25 and 27 of the upper and lower main base cloths 13a and 13b are sewn on the side base cloth 15 side by the second sewn portions 44, the tearing force is distributed to the side base cloth 15.

【００３３】本発明の前記実施の形態によれば、上下の
メイン基布１３ａ，１３ｂの延設部２５，２７が重ね縫
いされて連結されているので、直接メイン基布１３及び
サイド基布１５に荷重が掛りにくく強度が向上する。ま
た縫い代の重ね範囲内で縫着しているので、片側１つの
縫製パターンで強度を向上させることができる。更にサ
イド基布１５の材料強度が比較的低くてもエアバッグ本
体１１が破損するのを防止することができる。According to the embodiment of the present invention, since the extending portions 25, 27 of the upper and lower main base cloths 13a, 13b are sewn and connected to each other, the main base cloth 13 and the side base cloth 15 are directly connected. The load is less likely to be applied to the wire and the strength is improved. Further, since the sewing is performed within the overlapping range of the seam allowance, the strength can be improved by one sewing pattern on one side. Furthermore, even if the material strength of the side base cloth 15 is relatively low, it is possible to prevent the airbag body 11 from being damaged.

【００３４】図６には本発明の異なる実施の形態が夫々
示されており、図３に示す実施の形態と対応する部分に
は同一符号を付してこれ以上の詳細説明はこれを省略す
るも、前記サイド基布１５の縫い代３４より外側に突出
する延設部５１が形成されているもので、この延設部５
１が上下メイン基布１３ａ，１３ｂの延設部２５，２７
と同様に重ね縫いされるものである。斯る構成において
も、前述せる実施の形態と同様の作用効果を有するもの
である。FIG. 6 shows a different embodiment of the present invention. Parts corresponding to those of the embodiment shown in FIG. 3 are denoted by the same reference numerals, and further detailed description is omitted. Also, an extended portion 51 protruding outward from the seam allowance 34 of the side base cloth 15 is formed.
1 is an extension portion 25, 27 of the upper and lower main fabrics 13a, 13b.
Is sewn in the same manner as in. Also in such a configuration, the same operation and effect as those of the above-described embodiment are obtained.

【００３５】図７には本発明の更に異なる実施の形態が
示されており、図２に示す実施の形態と対応する部分に
は同一符号を付してこれ以上の詳細説明はこれを省略す
るも、上下のメイン基布１３ａ，１３ｂの延設部２５，
２７の内、何れか一方、例えば、メイン基布１３ａの延
設部２５を省略し、サイド基布１５の縫い代３４，３５
が第２の縫着部４４により縫製され、サイド基布１５の
縫い代３４が延設部２７と一体に第２の縫着部４４とし
て一体に縫着されているものである。斯る構成において
も、前述せる実施の形態と同様の作用効果を有するもの
である。FIG. 7 shows a still further embodiment of the present invention, in which parts corresponding to those of the embodiment shown in FIG. 2 are denoted by the same reference numerals, and further detailed description is omitted. Also, the extension portions 25 of the upper and lower main base cloths 13a, 13b,
27, for example, the extension portion 25 of the main base cloth 13a is omitted, and the seam allowances 34, 35 of the side base cloth 15 are omitted.
Are sewn by the second sewn portion 44, and the seam allowance 34 of the side base cloth 15 is sewn integrally with the extended portion 27 as the second sewn portion 44. Also in such a configuration, the same operation and effect as those of the above-described embodiment are obtained.

【００３６】尚、上述せる実施の形態では、上下のメイ
ン基布１３ａ，１３ｂの延設部２５，２７を夫々サイド
基布１５側に倒して重ねた場合につき説明したが、これ
はサイド基布１５側の幅が狭く重ね易いためであり、流
入口１７の形状でサイド基布１５が上下のメイン基布１
３ａ，１３ｂより長い場合等には上下のメイン基布１３
ａ，１３ｂ側に倒して縫製してもよい。In the above-described embodiment, the case where the extension portions 25 and 27 of the upper and lower main base cloths 13a and 13b are laid on the side base cloth 15 side, respectively, is explained. This is because the width of the side base fabric 15 is narrow and it is easy to overlap.
3a and 13b, the upper and lower main base fabrics 13 are used.
You may sew by leaning to the side of a, 13b.

【００３７】[0037]

【発明の効果】以上が本発明に係るエアバッグ装置のエ
アバッグ本体の実施の形態であるが、本発明の請求項１
に記載のエアバッグ装置のエアバッグ本体によれば、エ
アバッグ本体の流入口側に筒状の複数の取付部が形成さ
れ、該取付部と近接する複数の基布に縫い代より外側に
突出する延設部が形成され、一方の基布の縫い代と他方
の基布の縫い代とを縫着して第１の縫着部が形成され、
一方の基布の延設部を他方の基布側に重ね縫いして第２
の縫着部が形成されているので、エアバッグ本体の展開
膨出時に第１及び第２の縫着部が糸切れや布地切れを起
こす虞れがなく、取付強度を向上させることができ、然
も工程数が増大する虞れがなく、作業能率を向上させる
ことができる。The above is an embodiment of the airbag body of the airbag apparatus according to the present invention.
According to the airbag body of the airbag device described in (1), a plurality of tubular attachment portions are formed on the inflow side of the airbag body, and the plurality of base cloths adjacent to the attachment portions protrude outward from the seam allowance. An extended portion is formed, and a first sewing portion is formed by sewing a sewing allowance of one base fabric and a sewing allowance of the other base fabric,
The extended portion of one base cloth is sewn on the other base cloth side and
Is formed, the first and second sewn portions are not liable to cause thread breakage or fabric breakage when the airbag body is deployed and inflated, and the mounting strength can be improved. Of course, there is no fear that the number of steps is increased, and the working efficiency can be improved.

【００３８】本発明の請求項２に記載のエアバッグ装置
のエアバッグ本体によれば、エアバッグ本体のメイン基
布とサイド基布の流入口側に筒状の複数の取付部が形成
され、該取付部と近接するメイン基布に縫い代より外側
に突出する延設部が形成され、メイン基布の縫い代とサ
イド基布の縫い代とを縫着して第１の縫着部が形成さ
れ、メイン基布の延設部をサイド基布側に重ね縫いして
第２の縫着部が形成されているので、エアバッグ本体の
展開膨出時にメイン基布とサイド基布の第１及び第２の
縫着部が糸切れや布地切れを起こす虞れがなく、取付強
度を向上させることができ、然も工程数が増大する虞れ
がなく、作業能率を向上させることができる。According to the airbag body of the airbag device according to the second aspect of the present invention, a plurality of cylindrical mounting portions are formed on the inflow side of the main base cloth and the side base cloth of the airbag body. An extension portion protruding outward from the sewing allowance is formed in the main base cloth adjacent to the attachment part, and a first sewing part is formed by sewing the sewing allowance of the main base cloth and the sewing allowance of the side base cloth, Since the extended portion of the main base fabric is overlapped and sewn on the side base fabric side to form the second sewn portion, when the airbag body is deployed and inflated, the first and second base fabrics and the side base fabric are first and second. There is no danger that the sewing portion 2 will break the thread or the cloth, the mounting strength can be improved, and, of course, there is no danger that the number of steps will increase, and the work efficiency can be improved.

【００３９】本発明の請求項３に記載のエアバッグ装置
のエアバッグ本体によれば、エアバッグ本体のメイン基
布とサイド基布の流入口側に筒状の取付部が夫々形成さ
れ、前記メイン基布の取付部と近接するメイン基布に縫
い代より外側に突出する延設部が形成され、メイン基布
の縫い代とサイド基布の縫い代とを夫々縫着して第１の
縫着部が形成され、メイン基布の延設部をサイド基布側
に重ね縫いして第２の縫着部が形成されているので、エ
アバッグ本体の展開膨出時にメイン基布とサイド基布の
第１及び第２の縫着部が糸切れや布地切れを起こす虞れ
がなく、取付強度を向上させることができ、然も工程数
が増大する虞れがなく、作業能率を向上させることがで
きる。According to the airbag body of the airbag device according to the third aspect of the present invention, the airbag body is formed with a cylindrical mounting portion at the inlet side of the main base cloth and the side base cloth, respectively. An extension portion protruding outward from the sewing allowance is formed on the main base cloth adjacent to the mounting part of the main base cloth, and a sewing allowance of the main base cloth and a sewing allowance of the side base cloth are sewn, respectively, to form a first sewing part. Is formed, and the extended portion of the main base fabric is overlapped and sewn on the side base fabric side to form the second sewn portion. Therefore, when the airbag body is deployed and inflated, the main base fabric and the side base fabric are separated from each other. There is no possibility that the first and second sewn portions may break the thread or the fabric, so that the mounting strength can be improved. Further, there is no possibility that the number of steps increases, and the work efficiency can be improved. it can.

【００４０】本発明の請求項４に記載のエアバッグ装置
のエアバッグ本体によれば、エアバッグ本体のメイン基
布とサイド基布の流入口側に筒状の取付部が夫々形成さ
れ、前記メイン基布の取付部と近接するメイン基布に縫
い代より外側に突出する延設部が夫々形成され、メイン
基布の縫い代とサイド基布の縫い代とを縫着して第１の
縫着部が形成され、メイン基布の延設部を夫々サイド基
布側に重ね、メイン基布の延設部同士及びサイド基布を
重ね縫いして第２の縫着部が夫々形成されているので、
エアバッグ本体の展開膨出時にメイン基布とサイド基布
の第１及び第２の縫着部が糸切れや布地切れを起こす虞
れがなく、取付強度を向上させることができ、然も工程
数が増大する虞れがなく、作業能率を向上させることが
できる。[0040] According to the airbag body of the airbag device according to the fourth aspect of the present invention, the airbag body is formed with cylindrical attachment portions on the inflow side of the main base cloth and the side base cloth, respectively. An extension portion protruding outward from the sewing allowance is formed on the main base cloth adjacent to the attachment part of the main base cloth, and the sewing allowance of the main base cloth and the sewing allowance of the side base cloth are sewn. Is formed, the extended portions of the main base fabric are respectively overlapped with the side base fabric side, and the extended portions of the main base fabric and the side base fabric are overlapped and sewn to form the second sewn portions. ,
When the airbag body is deployed and inflated, the first and second sewn portions of the main base cloth and the side base cloth are free from thread breakage or cloth breakage, and the mounting strength can be improved. There is no fear that the number increases, and the work efficiency can be improved.

【００４１】本発明の請求項５に記載のエアバッグ装置
のエアバッグ本体によれば、前記エアバッグ本体を構成
する複数の基布が経緯糸の打ち込み本数が略１対１の平
織り布から形成され、前記一方の基布の延設部の織り目
方向に対して重ね縫いされる他方の基布の織り目方向が
バイアス方向に形成されているので、エアバッグ本体の
展開膨出時に第１及び第２の縫着部が糸切れや布地切れ
を起こす虞れがなく、取付強度を向上させることができ
る。According to the airbag body of the airbag device according to the fifth aspect of the present invention, the plurality of base fabrics forming the airbag body are formed of a plain woven fabric having approximately one to one warp yarns. Since the texture direction of the other fabric sewn on the extended portion of the one fabric is overlapped with the texture direction of the other fabric, the first and second fabrics are sewn when the airbag body is deployed and inflated. There is no fear that the sewing portion 2 may break the thread or the fabric, and the mounting strength can be improved.

【００４２】本発明によれば、エアバッグ本体の展開膨
出時にメイン基布とサイド基布に直接荷重が掛かりにく
く強度を向上させることができ、縫着部が糸切れや布地
切れを起こす虞れがなく、取付強度を向上させることが
でき、然も工程数が増大する虞れがなく、作業能率を向
上させることができ、メイン基布とサイド基布の材料選
定の自由度が拡がり、更に取付部に予めリテーナ等の剛
体部品が固着されていても平面上で補強縫いができるの
で自動縫製化が容易におこなえるエアバッグ装置のエア
バッグ本体を得ることができる。According to the present invention, when the airbag body is deployed and inflated, a load is not directly applied to the main base cloth and the side base cloth, so that the strength can be improved. And the mounting strength can be improved, the number of steps does not increase, and the work efficiency can be improved, and the degree of freedom in material selection of the main base cloth and the side base cloth is expanded, Further, even when a rigid component such as a retainer is fixed to the mounting portion in advance, reinforcement sewing can be performed on a plane, so that an airbag body of an airbag device that can easily perform automatic sewing can be obtained.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明に係わるエアバッグ装置のエアバッグ本
体を示す斜視図。FIG. 1 is a perspective view showing an airbag body of an airbag device according to the present invention.

【図２】本発明に係わるエアバッグ装置のエアバッグ本
体を示すもので、図１のＺ−Ｚ線断面図。FIG. 2 is a cross-sectional view taken along the line ZZ of FIG. 1, showing an airbag body of the airbag device according to the present invention.

【図３】本発明に係わるエアバッグ装置のエアバッグ本
体の分解斜視図。FIG. 3 is an exploded perspective view of an airbag body of the airbag device according to the present invention.

【図４】本発明に係わるエアバッグ装置のエアバッグ本
体の異なる実施の形態を夫々示すもので、（ａ），
（ｂ）は図１のＺ−Ｚ線の異なる実施の形態の断面図。FIGS. 4A and 4B show different embodiments of the airbag body of the airbag device according to the present invention.
(B) is sectional drawing of the different embodiment of the ZZ line of FIG.

【図５】本発明に係わるエアバッグ装置のエアバッグ本
体の実施の形態を夫々示すもので、（ａ），（ｂ）は図
１のＹ−Ｙ線の異なる実施の形態の断面図。5 (a) and 5 (b) are cross-sectional views of a different embodiment taken along line YY of FIG. 1, respectively showing an embodiment of an airbag body of the airbag device according to the present invention.

【図６】本発明に係わるエアバッグ装置のエアバッグ本
体の異なる実施の形態を示す分解斜視図。FIG. 6 is an exploded perspective view showing another embodiment of the airbag body of the airbag apparatus according to the present invention.

【図７】本発明に係わるエアバッグ装置のエアバッグ本
体の更に異なる実施の形態を示す断面図。FIG. 7 is a sectional view showing still another embodiment of the airbag body of the airbag apparatus according to the present invention.

【図８】従来のエアバッグ装置のエアバッグ本体を示す
斜視図。FIG. 8 is a perspective view showing an airbag body of a conventional airbag device.

【符号の説明】[Explanation of symbols]

１１ エアバッグ本体 １３ メイン基布 １３ａ メイン基布 １３ｂ メイン基布 １５ サイド基布 １７ 流入口 ２１ 取付部 ２３ 取付部 ２５ 延設部 ２７ 延設部 ３１ 縫い代 ３２ 縫い代 ３４ 縫い代 ３５ 縫い代 ４１ 第１の縫着部 ４２ 第１の縫着部 ４４ 第２の縫着部 ５１ 延設部 DESCRIPTION OF SYMBOLS 11 Airbag main body 13 Main base cloth 13a Main base cloth 13b Main base cloth 15 Side base cloth 17 Inflow port 21 Mounting part 23 Mounting part 25 Extension part 27 Extension part 31 Seam allowance 32 Seam allowance 34 Seam allowance 35 Seam allowance 41 First sewing Attachment part 42 First sewn part 44 Second sewn part 51 Extension part

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 複数の基布を縫着して袋状に形成され、
ガス発生器からのガスが流入するための流入口が形成さ
れたエアバッグ装置のエアバッグ本体において、 前記エアバッグ本体の流入口側に筒状の複数の取付部が
形成され、該取付部と近接する複数の基布に縫い代より
外側に突出する延設部が形成され、一方の基布の縫い代
と他方の基布の縫い代とを縫着して第１の縫着部が形成
され、一方の基布の延設部を他方の基布側に重ね縫いし
て第２の縫着部が形成されていることを特徴とするエア
バッグ装置のエアバッグ本体。1. A bag formed by sewing a plurality of base fabrics,
In the airbag body of the airbag device in which an inflow port for gas from the gas generator to flow in is formed, a plurality of cylindrical attachment portions are formed on the inflow side of the airbag body, and the attachment portion and An extended portion protruding outward from the sewing allowance is formed in a plurality of adjacent base cloths, and a first sewing part is formed by sewing the sewing allowance of one base cloth and the sewing allowance of the other base cloth. An airbag body of an airbag device, wherein an extended portion of the base fabric is overlapped and sewn on the other base fabric side to form a second sewn portion. 【請求項２】 メイン基布と、該メイン基布に縫着され
るサイド基布とから袋状に形成され、ガス発生器からの
ガスが流入するための流入口が形成されたエアバッグ装
置のエアバッグ本体において、 前記エアバッグ本体のメイン基布とサイド基布の流入口
側に筒状の複数の取付部が形成され、該取付部と近接す
るメイン基布に縫い代より外側に突出する延設部が形成
され、メイン基布の縫い代とサイド基布の縫い代とを縫
着して第１の縫着部が形成され、メイン基布の延設部を
サイド基布側に重ね縫いして第２の縫着部が形成されて
いることを特徴とするエアバッグ装置のエアバッグ本
体。2. An airbag device formed in a bag shape from a main base cloth and a side base cloth sewn to the main base cloth, and formed with an inflow port through which gas from a gas generator flows. In the airbag main body, a plurality of cylindrical attachment portions are formed on the inflow side of the main base cloth and the side base cloth of the airbag main body, and the main base cloth adjacent to the attachment section protrudes outward from a seam allowance. An extended portion is formed, a sewing allowance of the main base fabric and a sewing allowance of the side base fabric are sewn to form a first sewn portion, and the extended portion of the main base fabric is sewn on the side base fabric side. An airbag body of the airbag device, wherein a second sewn portion is formed. 【請求項３】 略Ｕ字状に弯曲したメイン基布と、該メ
イン基布の略Ｕ字状の両側部に縫着されるサイド基布と
から袋状に形成され、ガス発生器からのガスが流入する
ための流入口が形成されたエアバッグ装置のエアバッグ
本体において、 前記エアバッグ本体のメイン基布とサイド基布の流入口
側に筒状の取付部が夫々形成され、前記メイン基布の取
付部と近接するメイン基布に縫い代より外側に突出する
延設部が形成され、メイン基布の縫い代とサイド基布の
縫い代とを夫々縫着して第１の縫着部が形成され、メイ
ン基布の延設部をサイド基布側に重ね縫いして第２の縫
着部が形成されていることを特徴とするエアバッグ装置
のエアバッグ本体。3. A bag formed from a main base cloth curved in a substantially U-shape and side base cloths sewn on both sides of the substantially U-shaped main base cloth. In an airbag body of an airbag device in which an inflow port for inflow of gas is formed, a cylindrical attachment portion is formed on an inflow side of a main fabric and a side fabric of the airbag body, respectively. An extension portion protruding outward from the sewing allowance is formed in the main base cloth adjacent to the base cloth attachment part, and the first sewing part is sewn with the main base cloth sewing allowance and the side base cloth sewing allowance, respectively. An airbag main body of an airbag device, wherein an extended portion of the main base fabric is formed and sewn on the side base fabric side to form a second sewn portion. 【請求項４】 略Ｕ字状に弯曲したメイン基布と、該メ
イン基布の略Ｕ字状の両側部に縫着されるサイド基布と
から袋状に形成され、ガス発生器からのガスが流入する
ための流入口が形成されるエアバッグ装置のエアバッグ
本体において、 前記エアバッグ本体のメイン基布とサイド基布の流入口
側に筒状の取付部が夫々形成され、前記メイン基布の取
付部と近接するメイン基布に縫い代より外側に突出する
延設部が夫々形成され、メイン基布の縫い代とサイド基
布の縫い代とを縫着して第１の縫着部が形成され、メイ
ン基布の延設部を夫々サイド基布側に重ね、メイン基布
の延設部同士及びサイド基布を重ね縫いして第２の縫着
部が夫々形成されていることを特徴とするエアバッグ装
置のエアバッグ本体。4. A bag formed from a main base cloth curved in a substantially U-shape and side base cloths sewn on both sides of the main base cloth in a substantially U-shape. In an airbag body of an airbag device in which an inflow port for inflow of gas is formed, a tubular mounting portion is formed on each of the inflow side of the main base cloth and the side base cloth of the airbag body, and An extension portion protruding outward from the sewing allowance is formed on the main base cloth adjacent to the attachment part of the base cloth, and the first sewing part is formed by sewing the sewing allowance of the main base cloth and the sewing allowance of the side base cloth. The extended portions of the main base fabric are respectively overlapped on the side base fabric side, and the extended portions of the main base fabric and the side base fabric are sewn together to form second sewn portions. An airbag body of an airbag device characterized by the following. 【請求項５】 前記エアバッグ本体を構成する複数の基
布が経緯糸の打ち込み本数が略１対１の平織り布から形
成され、前記一方の基布の延設部の織り目方向に対して
重ね縫いされる他方の基布の織り目方向がバイアス方向
に形成されていることを特徴とする請求項１乃至請求項
４の何れかに記載のエアバッグ装置のエアバッグ本体。5. A plurality of base fabrics constituting said airbag main body are formed from plain woven fabrics in which the number of warp yarns is substantially one-to-one, and are overlapped with each other in the weave direction of an extended portion of said one base fabric. The airbag body of the airbag device according to any one of claims 1 to 4, wherein the texture direction of the other base fabric to be sewn is formed in the bias direction.