JPH11180244A - Air bag for vehicle - Google Patents
Air bag for vehicleInfo
- Publication number
- JPH11180244A JPH11180244A JP9349820A JP34982097A JPH11180244A JP H11180244 A JPH11180244 A JP H11180244A JP 9349820 A JP9349820 A JP 9349820A JP 34982097 A JP34982097 A JP 34982097A JP H11180244 A JPH11180244 A JP H11180244A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- airbag
- regulating
- vehicle
- suture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Air Bags (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、膨張時の容積を規
制するように、対向する基布相互を縫合してなる規制用
縫合部を備えた車両用エアバッグに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag for a vehicle having a regulating stitch portion formed by sewing opposing base cloths so as to regulate a volume when inflated.
【0002】[0002]
【従来の技術とその課題】従来、例えば、側突用エアバ
ッグでは、膨張時の厚さを含めた容積を規制するよう
に、対向する基布相互を縫合してなる規制用縫合部を備
えたものが知られていた(特開平8−169294号公
報、DE19622225A1等参照)。2. Description of the Related Art Conventionally, for example, a side-impact airbag has a regulating stitching portion formed by sewing opposing base cloths together so as to regulate a volume including a thickness when inflated. (See Japanese Patent Application Laid-Open No. 8-169294, DE19622225A1, etc.).
【0003】しかし、従来の規制用縫合部は、対向する
基布相互を、単なる直線状に縫合したり、閉塞した円環
状に縫合して、形成されていた。[0003] However, the conventional regulation suturing portion is formed by simply suturing opposing base cloths in a straight line or by suturing in a closed annular shape.
【0004】そのため、直線状に縫合した規制用縫合部
では、エアバッグの膨張時、直線状の両端に、大きな引
張応力が集中することから、縫合糸が破断する虞れが生
じ易かった。[0004] Therefore, in the regulation stitching portion sewn in a straight line, when the airbag is inflated, a large tensile stress is concentrated on both ends of the straight line, so that the suture may be easily broken.
【0005】また、円環状に縫合した規制用縫合部で
は、縫合糸を破断させるような応力集中が生じ難いもの
の、閉鎖した円環状に縫合する際の対向した基布相互の
縫合開始位置と縫合終了位置とが重なり、その重なった
部位には、基布相互を貫通する縫合糸により、基布に貫
通孔が接近して多数形成されることとなって、基布の強
度を低下させていた。[0005] Further, in the regulation stitching portion sewn in an annular shape, stress concentration that would break the suture is unlikely to occur, but the sewing start position between the opposing base fabrics when suturing in a closed annular shape and the suturing. The end position overlaps, and in the overlapped portion, a large number of through holes are formed in the base cloth by the sutures penetrating through the base cloth, thereby reducing the strength of the base cloth. .
【0006】本発明は、上述の課題を解決するものであ
り、規制用縫合部を配設させていても、膨張時における
規制用縫合部の縫合糸への応力集中や基布の強度低下を
抑えることができる車両用エアバッグを提供することを
目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to reduce the concentration of stress on the sutures of the regulating sutures and the decrease in the strength of the base cloth when the regulating sutures are inflated even if the regulating sutures are provided. It is an object of the present invention to provide a vehicle airbag that can be suppressed.
【0007】[0007]
【課題を解決するための手段】本発明に係る車両用エア
バッグは、膨張時の容積を規制するように、対向する基
布相互を縫合してなる規制用縫合部を備えた車両用エア
バッグであって、前記規制用縫合部が、開口側の両端部
を相互に接近させつつ対向させるように、1つの開口部
を設けて、円弧状のコーナ部を有した環状として、形成
されていることを特徴とする。SUMMARY OF THE INVENTION A vehicle airbag according to the present invention has a regulating stitching portion formed by suturing opposing base fabrics so as to regulate the volume when inflated. The regulating stitching portion is formed as an annular shape having an arc-shaped corner portion by providing one opening so that both ends on the opening side face each other while approaching each other. It is characterized by the following.
【0008】前記開口部は、膨張時に流れる膨張用ガス
の上流側から遠ざかる側に配置させることが望ましい。It is desirable that the opening is disposed on a side away from the upstream side of the inflation gas flowing at the time of inflation.
【0009】また、前記規制用縫合部には、前記開口部
の両側に、前記開口部を覆うように張り出した張出部を
設けることが望ましい。It is preferable that the restricting suturing portion is provided on both sides of the opening so as to protrude so as to cover the opening.
【0010】[0010]
【発明の効果】本発明に係る車両用エアバッグでは、規
制用縫合部が、規制用縫合部の両端を相互に離しつつ反
対方向に向けるような直線状の縫合部と相違して、開口
部を介在させて、規制用縫合部の開口側の両端部を相互
に接近させつつ対向させるように、形成されている。そ
のため、エアバッグの膨張時、応力集中の生じ易い規制
用縫合部の開口側両端部に加わる引張力は、大きく分け
て、規制用縫合部の開口部の開口幅方向に作用する力
と、その開口幅方向と直交する方向に作用する力と、に
2分されるが、開口幅方向に作用する力に対しては、規
制用縫合部の開口幅方向の両端部が受ける態様となっ
て、規制用縫合部の開口側両端部に応力集中が生じ難く
なる。In the airbag for a vehicle according to the present invention, the regulating suturing portion is different from the linear suturing portion in which both ends of the regulating suturing portion are directed away from each other in the opposite direction. Are formed so that both ends on the opening side of the regulating suture portion are opposed to each other while approaching each other. Therefore, at the time of inflation of the airbag, the tensile force applied to the opening side ends of the regulating suture portion where stress concentration tends to occur is roughly divided into a force acting in the opening width direction of the opening of the regulating suture portion and The force acting in the direction orthogonal to the opening width direction is divided into two, but for the force acting in the opening width direction, both ends in the opening width direction of the regulating suture are received, Stress concentration hardly occurs at both ends on the opening side of the regulating suture.
【0011】そして、膨張時の引張力を受ける規制用縫
合部の開口幅方向の両端部がコーナ部であっても、規制
用縫合部のコーナ部自体が円弧状に形成されているた
め、それらのコーナ部に応力集中が生じ難い。[0011] Even if both ends in the opening width direction of the regulating sutures which receive the tensile force at the time of expansion are corners, the corners of the regulating sutures themselves are formed in an arc shape. Stress concentration hardly occurs at the corners of
【0012】さらに、開口部を配置させているため、規
制用縫合部の両端が重ならず、基布の強度低下も招かな
い。Further, since the openings are arranged, both ends of the regulating suture do not overlap, and the strength of the base cloth does not decrease.
【0013】したがって、本発明に係る車両用エアバッ
グでは、規制用縫合部を配設させていても、膨張時にお
ける規制用縫合部の縫合糸への応力集中や基布の強度低
下を抑えることができて、エアバッグ自体の強度を向上
させることができる。Therefore, in the airbag for a vehicle according to the present invention, even when the regulating stitching portion is provided, it is possible to suppress the concentration of stress on the suture of the regulating stitching portion at the time of inflation and a decrease in the strength of the base cloth. Thus, the strength of the airbag itself can be improved.
【0014】そして、開口部を、膨張時に流れる膨張用
ガスの上流側から遠ざかる側に配置させれば、規制用縫
合部の開口側の両端部が、吐出当初の高温の膨張用ガス
に曝されず、規制用縫合部の開口側両端部の保護を図る
ことができて、規制用縫合部の強度向上に寄与できる。If the opening is arranged on the side remote from the upstream side of the inflation gas flowing during inflation, both ends of the opening of the regulating suture are exposed to the high-temperature inflation gas at the beginning of discharge. Instead, it is possible to protect both ends on the opening side of the regulation suturing portion, which can contribute to improvement in the strength of the regulation suturing portion.
【0015】また、規制用縫合部における開口部の両側
に、開口部を覆うように張り出した張出部を設ければ、
規制用縫合部の開口側両端部を、張出部間の中央付近の
奥に配置させることができる。そして、規制用縫合部の
開口側両端部は、張出部の反対側も連続した縫合部位で
覆われているため、周囲を、張出部と連続した縫合部位
とで囲まれる態様となり、開口幅方向と直交する方向に
作用する力も作用し難くなって、一層、応力集中が生じ
難く、かつ、高温の膨張用ガスに直接曝され難くなっ
て、エアバッグの強度を向上させることができる。[0015] In addition, if an overhanging portion is provided on both sides of the opening portion of the regulating suture portion so as to cover the opening portion,
Both ends on the opening side of the regulating suture portion can be arranged at the back near the center between the overhang portions. Since both ends on the opening side of the regulating suture are covered with the continuous suturing portion on the opposite side of the overhanging portion, the periphery is surrounded by the suturing portion continuous with the overhanging portion. The force acting in the direction perpendicular to the width direction is also less likely to act, so that stress concentration is less likely to occur, and it is less likely to be directly exposed to a high-temperature inflation gas, so that the strength of the airbag can be improved.
【0016】[0016]
【発明の実施の形態】以下、本発明の一実施形態を図面
に基づいて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.
【0017】実施形態の車両用エアバッグ16は、図1
・2に示すように、シート1の背もたれ部2における車
外側部位に配置された側突用エアバッグ装置10に使用
されるものである。The vehicle airbag 16 of the embodiment is shown in FIG.
As shown in 2, the airbag device 10 is used for a side collision airbag device 10 that is disposed at a portion of the backrest 2 of the seat 1 on the vehicle outside.
【0018】背もたれ部2には、略上下方向に配置され
るフレーム3が配設され、側突用エアバッグ装置10
は、取付ブラケット13のボルト13bをナット8止め
されて、フレーム3に固定されている。なお、4はクッ
ション、5・6は装飾布等からなる表皮であり、さら
に、7は、背もたれ部2の車外側部位に取り付けられ
て、エアバッグ16の膨張時に開くカバーである。The backrest 2 is provided with a frame 3 which is disposed in a substantially vertical direction.
Are fixed to the frame 3 with the bolts 13b of the mounting bracket 13 fixed to the nut 8. Reference numeral 4 denotes a cushion, reference numerals 5 and 6 denote skins made of decorative cloth or the like, and reference numeral 7 denotes a cover which is attached to the outer portion of the backrest 2 and opens when the airbag 16 is inflated.
【0019】側突用エアバッグ装置10は、エアバッグ
16の他、折り畳まれたエアバッグ16を覆うケース1
1と、エアバッグ16に膨張用ガスを供給するインフレ
ーター12と、取付ブラケット13と、を備えて構成さ
れている。ケース11は、エアバッグ16の膨張時に開
く扉部11aを備えて構成されている。インフレーター
12は、エアバッグ16の内部に配置されるシリンダタ
イプとしており、所定位置に、膨張用ガスを吐出するガ
ス吐出口12aが開口されている。取付ブラケット13
は、インフレーター12を保持する筒部13aと、筒部
13aから延びるボルト13bと、を備えて構成されて
いる。The side collision airbag device 10 includes a case 1 that covers the folded airbag 16 in addition to the airbag 16.
1, an inflator 12 for supplying an inflation gas to the airbag 16, and a mounting bracket 13. The case 11 includes a door 11a that opens when the airbag 16 is inflated. The inflator 12 is of a cylinder type disposed inside the airbag 16, and has a gas discharge port 12a for discharging an inflation gas at a predetermined position. Mounting bracket 13
Is provided with a cylindrical portion 13a for holding the inflator 12, and a bolt 13b extending from the cylindrical portion 13a.
【0020】側突用エアバッグ16は、図1〜4に示す
ように、略同形状に裁断した2枚の基布17・18の周
縁相互を縫合糸15で縫合して形成用縫合部20を形成
し、袋状にするとともに、補強布19を介在させて、基
布17・18の中央付近相互を縫合糸15で縫合し、規
制用縫合部21を形成して構成されている。基布17・
18は、ポリアミドやポリエステル等の織布から形成さ
れ、縫合糸15もポリアミド糸等が使用されている。ま
た、縫合部20・21は、ロックステッチやチェーンス
テッチ等の縫い方で形成されている。さらに、補強布1
9は、基布17・18と同じような材質の布材から形成
されている。As shown in FIGS. 1 to 4, the side-impact airbag 16 is formed by suturing peripheral edges of two base cloths 17 and 18 cut into substantially the same shape with a suture thread 15 to form a suturing portion 20. Is formed into a bag shape, and the central cloths 17 and 18 are sewn together near the center thereof with a suture thread 15 with a reinforcing cloth 19 interposed therebetween to form a regulating suture portion 21. Base cloth 17
Numeral 18 is made of a woven fabric such as polyamide or polyester, and the suture 15 is also made of polyamide yarn or the like. Further, the stitching portions 20 and 21 are formed by sewing methods such as lock stitches and chain stitches. Further, the reinforcing cloth 1
9 is formed from a cloth material of the same material as the base cloths 17 and 18.
【0021】そして、実施形態の規制用縫合部21は、
開口側の両端部21a・21aを相互に接近させつつ対
向させるように、1つの開口部22を設けて、コーナ部
Cを円弧状とした環状に形成されている。また、開口部
22は、膨張時に流れる膨張用ガスGの上流側から遠ざ
かる側に配置させている。さらに、実施形態の規制用縫
合部21には、開口部22の両側に、開口部22を覆う
ように張り出した張出部23・23が設けられ、一筆書
きのような2重の逆「C」字状に、縫合部21が形成さ
れている。The regulating suture 21 of the embodiment is
One opening 22 is provided so that both ends 21a on the opening side are opposed to each other while approaching each other, and the corner C is formed in an annular shape having a circular arc shape. In addition, the opening 22 is disposed on a side away from the upstream side of the inflation gas G flowing during the inflation. Further, the regulating suture 21 of the embodiment is provided on both sides of the opening 22 with overhanging portions 23 projecting so as to cover the opening 22. The stitching portion 21 is formed in a “<” shape.
【0022】このエアバッグ16の製造は、所定形状に
裁断した基布17・18の外表面側となる側を対向させ
た状態で重ね、一部を残した状態で、外周縁相互を縫合
糸15で縫合して形成用縫合部20を形成し、縫い代が
外表面側に露出しないように、縫合していない未縫合部
位を利用して、裏返す。なお、基布17・18には、規
制用縫合部21となる部位に補強布19・19を予め縫
いつけておく。そして、裏返した後、開口側の端部21
aの一方から一筆書きのように縫い始めて、規制用縫合
部21を形成し、さらに、外周縁の未縫合部位から、取
付ブラケット13・13を取り付けたインフレーター1
2を、エアバッグ16内に挿入して、ボルト13b・1
3bやインフレーター12から延びるリード線を基布1
7・18の所定の孔から突出させ、外周縁の未縫合部位
を縫合すれば、製造することができる。The production of the airbag 16 is performed by stacking the base fabrics 17 and 18 cut into a predetermined shape with the outer surfaces thereof facing each other, and leaving the part of the base fabrics 17 and 18 together with a suture thread. The sewn portion 15 is used to form the forming sewn portion 20 and turned over by using an unsewn unsewn portion so that the seam allowance is not exposed on the outer surface side. In addition, the reinforcing cloths 19 are sewed on the base cloths 17 and 18 in advance at the portions to be the regulation suturing portions 21. Then, after turning over, the end 21 on the opening side
a, the sewing machine starts to sew as one stroke from one side of a, forms a regulating stitching portion 21, and further attaches mounting brackets 13 from an unsewn portion on the outer peripheral edge.
2 is inserted into the airbag 16 and the bolts 13 b.
3b and the lead wire extending from the inflator 12
It can be manufactured by protruding from predetermined holes of Nos. 7 and 18 and suturing the unsewn portion on the outer peripheral edge.
【0023】そしてさらに、エアバッグ16を折り畳ん
だ後、ボルト13b・13bを突出させるように、ケー
ス11内に収納し、ボルト13b・13bをナット8止
めすれば、シート1の背もたれ部2にエアバッグ装置1
0を取り付けることができる。なお、シート1は、エア
バッグ装置10を取り付けた後、表皮5・6やカバー7
等を取り付けて組み立てが完了され、車両に装着される
こととなる。また、シート1を車両に装着する際には、
インフレーター12から延びるリード線を、車両の所定
のエアバッグ作動回路に結線させることとなる。Further, after the airbag 16 is folded, the airbag 16 is housed in the case 11 so that the bolts 13b are protruded, and the bolts 13b 13b are fixed to the nut 8, so that the air can be applied to the backrest 2 of the seat 1. Bag device 1
0 can be attached. After the airbag device 10 is attached, the seat 1 is covered with the skins 5 and 6 and the cover 7.
Attachment is completed, and assembly is completed, and the vehicle is mounted on the vehicle. Also, when mounting the seat 1 on a vehicle,
The lead wire extending from the inflator 12 is connected to a predetermined airbag operation circuit of the vehicle.
【0024】エアバッグ装置10が車両に装着された
後、所定の信号がインフレーター12に入力されれば、
インフレーター12のガス吐出口12aから膨張用ガス
Gが吐出され、エアバッグ16が、扉部11aとカバー
7とを押して開かせ、図1・2の2点鎖線で示すよう
に、規制用縫合部21で厚さを含めた容積を規制された
状態で、大きく膨張することとなる。When a predetermined signal is input to the inflator 12 after the airbag device 10 is mounted on the vehicle,
The inflation gas G is discharged from the gas discharge port 12a of the inflator 12, and the airbag 16 pushes the door portion 11a and the cover 7 to open, and as shown by a two-dot chain line in FIGS. In a state where the volume including the thickness is regulated at 21, it expands greatly.
【0025】その際、実施形態のエアバッグ16では、
規制用縫合部21が、規制用縫合部の両端を相互に離し
つつ反対方向に向けるような直線状の縫合部と相違し
て、開口部22を介在させて、規制用縫合部21の開口
側の両端部21aを相互に接近させつつ対向させるよう
に形成されている。そのため、エアバッグ16の膨張
時、応力集中の生じ易い規制用縫合部21の開口側両端
部21aに加わる引張力は、大きく分けて、規制用縫合
部21の開口部22の開口幅方向Xに作用する力と、開
口幅方向Xと直交する方向Yに作用する力と、に2分さ
れるが、開口幅方向Xに作用する力に対しては、規制用
縫合部21における開口幅方向Xの両端部21b・21
bが受ける態様となって、規制用縫合部21の開口側両
端部21aに応力集中が生じ難くなる。At that time, in the airbag 16 of the embodiment,
Unlike the linear suturing portion in which the regulation suturing portion 21 is directed in the opposite direction while separating both ends of the regulation suturing portion, the opening side of the regulation suturing portion 21 is provided with the opening 22 interposed therebetween. Are formed so that both end portions 21a of each of them are opposed to each other while approaching each other. Therefore, when the airbag 16 is inflated, the tensile force applied to the opening-side end portions 21a of the regulation stitching portion 21 where stress concentration is likely to occur is roughly divided in the opening width direction X of the opening portion 22 of the regulation stitching portion 21. The force acting in the opening width direction X is divided into a force acting in the opening width direction X and a force acting in the direction Y orthogonal to the opening width direction X. Both ends 21b and 21 of
In this case, stress concentration hardly occurs at both ends 21a on the opening side of the regulating suture 21.
【0026】そして、膨張時の引張力を受ける規制用縫
合部21の開口幅方向Xの両端部21b・21bがコー
ナ部Cであっても、規制用縫合部21のコーナ部C自体
が円弧状に形成されているため、それらのコーナ部Cに
応力集中が生じ難い。Even if both ends 21b in the opening width direction X of the regulating suture 21 that receive the tensile force at the time of expansion are corners C, the corners C themselves of the regulating suture 21 are arc-shaped. Therefore, stress concentration hardly occurs at those corner portions C.
【0027】また、開口部22を配置させているため、
規制用縫合部21の両端部21a・21aが重ならず、
基布17・18の強度低下も招かない。Also, since the opening 22 is arranged,
Both ends 21a of the regulation suture 21 do not overlap,
The strength of the base fabrics 17 and 18 does not decrease.
【0028】したがって、実施形態のエアバッグ16で
は、規制用縫合部21を配設させていても、膨張時にお
ける規制用縫合部21の縫合糸15への応力集中や基布
17・18の強度低下を抑えることができて、エアバッ
グ16自体の強度を向上させることができる。Therefore, in the airbag 16 of the embodiment, even when the regulating stitching portion 21 is provided, stress concentration on the suture 15 of the regulating stitching portion 21 at the time of inflation and strength of the base fabrics 17 and 18 are increased. The decrease can be suppressed, and the strength of the airbag 16 itself can be improved.
【0029】なお、実施形態の開口部22の開口幅B1
や張出部23・23間の間隔B2は、5mm以上設けるこ
とが望ましい。これらの寸法B1・B2が小さ過ぎる
と、縫合時の誤差で、端部21a・21a相互や張出部
23・23相互が重なる虞れが生ずるからである。The opening width B1 of the opening 22 in the embodiment is shown.
It is desirable that the space B2 between the overhanging portions 23 is provided at least 5 mm. If these dimensions B1 and B2 are too small, there is a risk that the ends 21a and 21a and the overhangs 23 and 23 may overlap each other due to an error in suturing.
【0030】また、規制用縫合部21における外周側の
コーナ部Cの半径Rは、10mm以上とすることが望まし
い。10mm未満とすれば、膨張時に生ずる引張力がその
部位に集中する虞れが生ずるからである。It is desirable that the radius R of the corner portion C on the outer peripheral side of the regulating stitching portion 21 be 10 mm or more. If the thickness is less than 10 mm, there is a possibility that the tensile force generated at the time of expansion may be concentrated on the portion.
【0031】そして、実施形態では、開口部22が、膨
張時に流れる膨張用ガスGの上流側から遠ざかる側に配
置されているため、規制用縫合部21の開口側端部21
a・21aの縫合糸15が、吐出当初の高温の膨張用ガ
スGに曝されず、開口側端部21a・21aの保護を図
ることができて、規制用縫合部21の強度を一層向上さ
せている。In the embodiment, since the opening 22 is disposed on the side away from the upstream side of the inflation gas G flowing during inflation, the opening side end 21 of the regulating suture 21 is provided.
The sutures 15a and 21a are not exposed to the high-temperature inflation gas G at the beginning of discharge, so that the opening-side ends 21a and 21a can be protected, and the strength of the regulation suture 21 is further improved. ing.
【0032】さらに、実施形態では、規制用縫合部21
における開口部22の両側に、開口部22を覆うように
張り出した張出部23・23が設けられているため、規
制用縫合部21の開口側端部21a・21aを、張出部
23・23間の中央付近の奥に配置させることができ
る。そして、規制用縫合部21の開口側端部21a・2
1aは、張出部23・23の反対側も、連続した縫合部
位21cで覆われているため、周囲を、張出部23・2
3や連続した縫合部位21cで囲まれる態様となり、開
口幅方向Xと直交する方向Yの引張力が張出部23・2
3や連続した縫合部位21cに分散されて、一層、応力
集中が生じ難く、かつ、高温の膨張用ガスに直接曝され
難くなって、エアバッグ16の強度を向上させることが
できる。Further, in the embodiment, the regulating suture 21
Are provided on both sides of the opening 22 so as to cover the opening 22. Therefore, the opening side ends 21a of the regulating suture 21 are connected to the projecting portions 23. 23 can be arranged at the back near the center. Then, the opening-side end portions 21a and 2a of the regulating suture portion 21
1a, since the opposite side of the overhang portions 23 is also covered with the continuous suturing portion 21c, the periphery of the overhang portions 23
3 and the continuous suturing portion 21c, and the pulling force in the direction Y orthogonal to the opening width direction X is
3 and the continuous suturing portion 21c, the stress concentration is less likely to occur, and it is harder to be directly exposed to the high-temperature inflation gas, so that the strength of the airbag 16 can be improved.
【0033】なお、実施形態のように、2重の逆「C」
字状としなくとも、図5に示すエアバッグ26のよう
に、開口側の両端部31a・31aを相互に接近させつ
つ対向させるように、1つの開口部32を設けた環状と
するとともに、開口部32の開口幅方向の両端部31b
・31bを円弧状のコーナ部Cとした1重の逆「C」字
状の規制用縫合部31としても良い。この場合でも、請
求項1・2の作用・効果を得ることができる。さらに、
1重の規制用縫合部の場合、図5のような湾曲した長円
形状にしなくとも、開口部を備えた単なる円環状の規制
用縫合部としても良いが、前部側端部31d・31dよ
り、開口側端部31a・31aをインフレーター12側
に入り込ませたような湾曲状の規制用縫合部31では、
円弧状の端部31b・31dが引張力を強く受けて、開
口側端部31a・31aに引張力が作用し難くなること
から、好ましい。Note that, as in the embodiment, a double inverted "C"
Even if it does not have a shape, as in the airbag 26 shown in FIG. 5, an annular shape having one opening 32 is provided so that both ends 31a on the opening side face each other while approaching each other. Both ends 31b in the opening width direction of the portion 32
A single-sided inverted “C” -shaped regulating stitching portion 31 having a circular arc-shaped corner portion 31b may be used. Even in this case, the functions and effects of the first and second aspects can be obtained. further,
In the case of a single regulation suturing portion, a simple annular regulation suturing portion having an opening may be used instead of a curved elliptical shape as shown in FIG. 5, but the front side end portions 31d and 31d. Thus, in the curved regulating suture portion 31 in which the opening side end portions 31a are inserted into the inflator 12 side,
This is preferable because the arc-shaped ends 31b and 31d strongly receive the tensile force, and the tensile force hardly acts on the opening-side ends 31a and 31a.
【0034】また、図6に示すエアバッグ36のよう
に、開口部42を備えた1重の逆「C」字状の規制用縫
合部41の内部に、開口部44を備えた第2の「C」字
状の規制用縫合部43を設けたり、さらに、3重以上
に、逆「C」若しくは「C」字状の規制用縫合部を設け
ても良い。41a・43aは、開口側端部であり、41
b・43bは、開口幅方向端部の円弧状のコーナ部であ
る。ちなみに、開口部44・42に関しては、順次、反
対側に設けて、縫合部41・43の各端部41a・43
aに応力集中が生じ難いようにすることが良い。Further, as in an airbag 36 shown in FIG. 6, a second inverted "C" -shaped regulating stitching portion 41 having an opening 42 is provided with a second opening 44 provided therein. The “C” -shaped regulating stitching portion 43 may be provided, or an inverted “C” or “C” -shaped regulating stitching portion may be provided in three or more layers. Reference numerals 41a and 43a denote opening end portions,
b and 43b are arc-shaped corner portions at the ends in the opening width direction. Incidentally, the openings 44 and 42 are sequentially provided on the opposite side, and the respective ends 41a and 43 of the sutures 41 and 43 are provided.
It is preferable that stress concentration hardly occurs in a.
【0035】なお、このように、多重の規制用縫合部4
1・43を設ける場合には、一方の縫合部を形成した
後、使用した縫合糸15を一旦切断して、他の縫合部を
形成することとなるため、実施形態のような一筆書きの
ように連続する逆「C」若しくは「C」字形状に、規制
用縫合部を形成することが望ましい。As described above, the multiple regulating sutures 4
In the case where the 1.43 is provided, after forming one stitching portion, the used suture thread 15 is once cut to form another stitching portion. It is desirable to form the restricting suture portion in an inverted “C” or “C” shape that is continuous with the stitch.
【0036】また、規制用縫合部は、エアバッグに1箇
所でなく、複数箇所に設けても良い。Further, the regulation suturing portion may be provided at a plurality of places instead of one place in the airbag.
【0037】さらに、実施形態のエアバッグ16では、
開口部22を斜め下方向に開口させるように構成した
が、図7に示すエアバッグ46のように、乗員の頭部と
胸部とを保護するように、下部側と上部側とを2分割す
るような場合には、下方側から上向きに膨張用ガスGが
流れるため、上向きに開口する開口部52を形成するこ
とが望ましい。なお、51aは開口側端部、51bは開
口幅方向の端部であり、53は、規制用縫合部の張出部
である。Further, in the airbag 16 of the embodiment,
Although the opening 22 is configured to be opened obliquely downward, the lower side and the upper side are divided into two parts so as to protect the occupant's head and chest, as in an airbag 46 shown in FIG. In such a case, since the inflation gas G flows upward from the lower side, it is desirable to form the opening 52 that opens upward. In addition, 51a is an opening-side end, 51b is an end in the opening width direction, and 53 is an overhanging portion of the regulating suture.
【0038】さらにまた、各実施形態では、側突用エア
バッグ装置に使用されるエアバッグについて説明した
が、他の助手席用エアバッグ装置や運転席用エアバッグ
装置等に使用されるエアバッグに本発明を利用しても良
い。Furthermore, in each of the embodiments, the airbag used for the side collision airbag device has been described. However, the airbag used for other passenger seat airbag devices, driver seat airbag devices, and the like. The present invention may be used for the following.
【図1】本発明の一実施形態のエアバッグが収納された
シートの側面図である。FIG. 1 is a side view of a seat accommodating an airbag according to an embodiment of the present invention.
【図2】図1のII−II部位の概略断面図である。FIG. 2 is a schematic sectional view taken along the line II-II in FIG.
【図3】同実施形態のエアバッグの膨張時の状態を示す
側面図である。FIG. 3 is a side view showing a state when the airbag of the embodiment is inflated.
【図4】図4の III− III部位の端面図である。FIG. 4 is an end view of a portion III-III in FIG. 4;
【図5】他の実施形態のエアバッグの膨張時の状態を示
す側面図である。FIG. 5 is a side view showing a state when an airbag according to another embodiment is inflated.
【図6】さらに他の実施形態のエアバッグの膨張時の状
態を示す側面図である。FIG. 6 is a side view showing a state when an airbag according to still another embodiment is inflated.
【図7】さらに他の実施形態のエアバッグの膨張時の状
態を示す側面図である。FIG. 7 is a side view showing a state when an airbag according to still another embodiment is inflated.
16・26・36・46…エアバッグ、 17・18…基布、 21・31・41・43・51…規制用縫合部、 21a・31a・41a・43a・51a…開口側端
部、 22・32・42・44・52…開口部、 23・53…張出部、 C…コーナ部、 G…膨張用ガス。16.26.36.46 ... airbag, 17.18 ... base cloth, 21.31.41.43.51 ... regulating stitching part, 21a, 31a, 41a, 43a, 51a ... opening side end, 22. 32, 42, 44, 52: opening, 23, 53: overhang, C: corner, G: inflation gas.
Claims (3)
る基布相互を縫合してなる規制用縫合部を備えた車両用
エアバッグであって、 前記規制用縫合部が、開口側の両端部を相互に接近させ
つつ対向させるように、1つの開口部を設けて、円弧状
のコーナ部を有した環状として、形成されていることを
特徴とする車両用エアバッグ。1. An airbag for a vehicle, comprising a regulating stitching portion formed by stitching opposed base fabrics together so as to regulate a volume at the time of inflation, wherein the regulating stitching portion has an opening side. An airbag for a vehicle, wherein one opening is provided so that both ends are opposed to each other while approaching each other, and formed as an annular shape having an arc-shaped corner portion.
スの上流側から遠ざかる側に配置されていることを特徴
とする請求項1記載の車両用エアバッグ。2. The vehicle airbag according to claim 1, wherein the opening is disposed on a side away from an upstream side of the inflation gas flowing at the time of inflation.
に、前記開口部を覆うように張り出した張出部を備えて
構成されていることを特徴とする請求項1若しくは請求
項2記載の車両用エアバッグ。3. The control suturing portion according to claim 1, wherein the regulating suturing portion includes, on both sides of the opening, a projecting portion projecting so as to cover the opening. The airbag for a vehicle as described in the above.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9349820A JPH11180244A (en) | 1997-12-18 | 1997-12-18 | Air bag for vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9349820A JPH11180244A (en) | 1997-12-18 | 1997-12-18 | Air bag for vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH11180244A true JPH11180244A (en) | 1999-07-06 |
Family
ID=18406343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9349820A Withdrawn JPH11180244A (en) | 1997-12-18 | 1997-12-18 | Air bag for vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH11180244A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002220022A (en) * | 2001-01-24 | 2002-08-06 | Honda Motor Co Ltd | Side airbag device |
WO2002100691A1 (en) * | 2001-06-08 | 2002-12-19 | Toyoda Gosei Co., Ltd. | Side air bag device |
JP2003335208A (en) * | 2002-03-11 | 2003-11-25 | Toyoda Gosei Co Ltd | Side air bag device |
JP2005047471A (en) * | 2003-07-31 | 2005-02-24 | Toyoda Gosei Co Ltd | Method for folding air bag and air bag device |
US7207595B2 (en) * | 2003-03-27 | 2007-04-24 | Toyoda Gosei Co., Ltd. | Side airbag apparatus |
JP2007168792A (en) * | 2002-03-11 | 2007-07-05 | Toyoda Gosei Co Ltd | Side airbag apparatus |
JP2007197008A (en) * | 2002-03-11 | 2007-08-09 | Toyoda Gosei Co Ltd | Side airbag apparatus |
JP2007246047A (en) * | 2006-03-20 | 2007-09-27 | Nippon Plast Co Ltd | Airbag |
US7793973B2 (en) | 2002-03-11 | 2010-09-14 | Toyoda Gosei Co., Ltd. | Side airbag apparatus |
GB2562362A (en) * | 2017-03-20 | 2018-11-14 | Ford Global Tech Llc | Side airbag with necking chamber |
US10988100B2 (en) | 2019-08-29 | 2021-04-27 | Ford Global Technologies, Llc | Side airbag including non-expandable region |
-
1997
- 1997-12-18 JP JP9349820A patent/JPH11180244A/en not_active Withdrawn
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002220022A (en) * | 2001-01-24 | 2002-08-06 | Honda Motor Co Ltd | Side airbag device |
WO2002100691A1 (en) * | 2001-06-08 | 2002-12-19 | Toyoda Gosei Co., Ltd. | Side air bag device |
JP4569592B2 (en) * | 2002-03-11 | 2010-10-27 | 豊田合成株式会社 | Side airbag device |
JP2007168792A (en) * | 2002-03-11 | 2007-07-05 | Toyoda Gosei Co Ltd | Side airbag apparatus |
JP2007197008A (en) * | 2002-03-11 | 2007-08-09 | Toyoda Gosei Co Ltd | Side airbag apparatus |
US7793973B2 (en) | 2002-03-11 | 2010-09-14 | Toyoda Gosei Co., Ltd. | Side airbag apparatus |
JP2003335208A (en) * | 2002-03-11 | 2003-11-25 | Toyoda Gosei Co Ltd | Side air bag device |
JP4618271B2 (en) * | 2002-03-11 | 2011-01-26 | 豊田合成株式会社 | Side airbag device |
US7207595B2 (en) * | 2003-03-27 | 2007-04-24 | Toyoda Gosei Co., Ltd. | Side airbag apparatus |
JP2005047471A (en) * | 2003-07-31 | 2005-02-24 | Toyoda Gosei Co Ltd | Method for folding air bag and air bag device |
JP2007246047A (en) * | 2006-03-20 | 2007-09-27 | Nippon Plast Co Ltd | Airbag |
GB2562362A (en) * | 2017-03-20 | 2018-11-14 | Ford Global Tech Llc | Side airbag with necking chamber |
US10369956B2 (en) | 2017-03-20 | 2019-08-06 | Ford Global Technologies, Llc | Side airbag with necking chamber |
US10988100B2 (en) | 2019-08-29 | 2021-04-27 | Ford Global Technologies, Llc | Side airbag including non-expandable region |
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Legal Events
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A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20050301 |