JPH1029485A - Air bag for assistant seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new air bag in which a front surface of an air bag is sufficiently reached to the head part of an occupant seated at an assistant seat so as to attain a positive protection of the occupant and further there is no possibility that a wind shield glass is damaged. SOLUTION: This air bag is used in an air bag device for an assistant seat in which an air-bag poping-out port is formed at a slant surface of an instrument panel inclined in respect to a horizontal plane of a vehicle, wherein a first base cloth 1 having an inflater fixing port 3 and a second base cloth 2 having substantially the same size as that of the first base cloth are overlapped at appropriate central location of trapezoidal shape, their peripheral edges are sawn at 7 to form a bag shape 8, base clothes of both corner ends 5, 6 at a lower bottom side 4 of the trapezoidal shape are gathered in an ear-shape, sawn to each other, thereafter the sawn assembly is turned with its back-side out.

Description

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

【０００１】[0001]

【産業上の利用分野】本発明は、自動車の乗員保護装置
に使用されるエアバッグに関し、具体的には助手席用エ
アバッグの構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag used in an occupant protection system for a motor vehicle, and more particularly to a structure of a passenger airbag.

【０００２】[0002]

【従来の技術】この種のエアバッグのうち助手席用エア
バッグは、例えば自動車のインストルメントパネルに収
納され、車両の衝突時に助手席とインストルメントパネ
ルとの間に膨出して助手席の乗員を保護するものであ
る。このような助手席用エアバッグは、運転席用エアバ
ッグと比べると、収納部から乗員の位置する場所までの
距離が遠いため、その展開形状をより立体的にする必要
があり、一般的には図４に示す様に展開形状がブラウン
管型となっている。即ち、図４において、助手席用エア
バッグ４０は、小径部の底面にガス導入口４１が設けら
れ、この部分がエアバッグ装置のガス発生器に取り付け
られ、大径部の底面４２は、展開時に乗員を受け止める
様になっている。2. Description of the Related Art Of this type of airbag, a passenger airbag is housed in, for example, an instrument panel of an automobile, and swells between the passenger seat and the instrument panel upon collision of the vehicle, thereby occupant in the passenger seat. Is to protect. Such a passenger-side airbag has a longer distance from the storage section to the place where the occupant is located than the driver-side airbag. Has a cathode ray tube type as shown in FIG. That is, in FIG. 4, the passenger seat airbag 40 is provided with a gas inlet 41 on the bottom surface of the small diameter portion, this portion is attached to the gas generator of the airbag device, and the bottom surface 42 of the large diameter portion is deployed. Occasionally, they take in occupants.

【０００３】このバッグは、図５に示す様に、モジュー
ル缶５０をインストルメントパネル５１の水平面に設け
られるトップマウント方式の場合、エアバッグ５２の飛
び出し口が、インストルメントパネル５１の水平面とフ
ロントガラス５３との間にあるので、エアバッグ５２の
前面が助手席乗員に充分届かない恐れがあり、又、エア
バッグ５２の展開時に、その上面がフロントガラス５３
に衝突しフロントガラス５３を破損する恐れもある。In this bag, as shown in FIG. 5, in the case of a top mount system in which the module can 50 is provided on the horizontal surface of the instrument panel 51, the outlet of the airbag 52 is connected to the horizontal surface of the instrument panel 51 and the windshield. 53, there is a possibility that the front of the airbag 52 may not reach the passenger on the front passenger seat sufficiently.
And the front glass 53 may be damaged.

【０００４】又、図６に示す様に、モジュール缶６０を
インストルメントパネル６１の水平面に対して傾斜した
インストルメントパネルの傾斜面に設けられているトッ
プミッドマウント方式の場合は、エアバッグ６２の展開
時に、その上面がフロントガラス６３に衝突しても、フ
ロントガラス６３を破損する恐れはないが、エアバッグ
６２の前面が助手席乗員の頭部より上方に展開する恐れ
があり、助手席用には不適である。[0006] As shown in FIG. 6, in the case of a top mid-mount type in which a module can 60 is provided on an inclined surface of an instrument panel that is inclined with respect to the horizontal plane of an instrument panel 61, Even if the upper surface collides with the windshield 63 at the time of deployment, there is no possibility of damaging the windshield 63, but the front surface of the airbag 62 may be deployed above the head of the occupant in the front passenger seat. Not suitable for

【０００５】[0005]

【発明が解決しようとする課題】本発明は、従来の技術
の有する係る問題点に鑑みてなされたものであり、その
目的とするところは、助手席乗員の頭部にエアバッグの
前面が充分に届いて乗員保護が確実に行われ、且つフロ
ントガラスを破損する恐れもない新規なエアバッグを提
供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to make sure that the front of an airbag is sufficiently provided on the head of a passenger in a passenger seat. The present invention provides a new airbag that can reliably protect an occupant and does not damage the windshield.

【０００６】[0006]

【課題を解決するための手段】上記課題を解決するため
に、本発明は、エアバッグの飛び出し口が車両の水平面
に対して傾斜したインストルメントパネルの傾斜面に形
成されている助手席用エアバッグ装置に使用するエアバ
ッグであって、台形状の略中央部の適所にインフレータ
取付口を有する第一基布と、該第一基布と略同寸の第二
基布とを重ね合わせて、その周縁部を縫製して袋状とな
し、該台形状の下底辺の角両端部の基布を耳状に寄せて
縫着した後にこれを裏返してなるものである。In order to solve the above-mentioned problems, the present invention provides an airbag for a passenger seat, in which an outlet of an airbag is formed on an inclined surface of an instrument panel which is inclined with respect to a horizontal plane of a vehicle. An airbag used in a bag device, wherein a first base cloth having an inflator mounting opening at an appropriate position in a substantially central portion of a trapezoid and a second base cloth having substantially the same size as the first base cloth are superposed. The peripheral portion is sewn into a bag shape, and the base fabrics at both corners of the lower bottom side of the trapezoidal shape are sewn toward the ears and then turned over.

【０００７】又、前記エアバッグは、インフレータ取付
口をエアバッグが展開した状態でフロントガラスに接触
しない様な位置に形成してなるものとすることができ
る。更に前記第一基布と第二基布とを、その１辺で連続
した１枚の基布で構成することも可能である。The airbag may have an inflator mounting opening formed at a position where the airbag does not come into contact with the windshield when the airbag is deployed. Further, the first base cloth and the second base cloth can be constituted by one base cloth continuous on one side thereof.

【０００８】[0008]

【実施例】以下、本発明の助手席用エアバッグの実施例
を図１〜図３により説明する。図１は本発明の助手席用
エアバッグの構成及び作成方法を示す模式図、図２は助
手席用エアバッグの膨張状態を示す外観図、図３は助手
席用エアバッグの膨張状態と乗員との関係位置を示す概
略図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a passenger airbag according to the present invention will be described below with reference to FIGS. FIG. 1 is a schematic view showing the configuration and a method of making a passenger airbag of the present invention, FIG. 2 is an external view showing an inflated state of a passenger airbag, and FIG. 3 is an inflated state of a passenger airbag and an occupant. It is a schematic diagram showing a relation position with.

【０００９】先ず、図１により、エアバッグの構成及び
その作成方法を説明する。図１（ａ）において、２枚の
基布１，２は同形であり、台形状に裁断され、台形状の
第一基布１の略中央部の適所にインフレータ取付口３を
裁断して形成している。この２枚の基布１，２を図１
（ｂ）に示す様に重ね合わせて、その周囲を台形状の下
底辺４に相当する長辺部の両端角部５，６を残して外形
に沿って縫製７し、袋形状８とする。尚、２枚の基布
１，２を用いる代わりに、台形の底辺あるいは側辺で互
いに連続した形状の１枚の基布を用いて重ね合わせても
よい。この場合には縫製線７は、全周ではなく、連続し
た辺を除く他の３辺のみでよい。First, a configuration of an airbag and a method of producing the airbag will be described with reference to FIG. In FIG. 1A, the two base cloths 1 and 2 have the same shape, are cut into a trapezoidal shape, and are formed by cutting the inflator mounting opening 3 at an appropriate position substantially in the center of the trapezoidal first base cloth 1. doing. These two base fabrics 1 and 2 are shown in FIG.
As shown in (b), they are superimposed, and the periphery thereof is sewn 7 along the outer shape except for both end corners 5 and 6 of the long sides corresponding to the lower base 4 of the trapezoidal shape to form a bag shape 8. Instead of using the two base cloths 1 and 2, the base cloths may be overlaid using one base cloth having a shape that is continuous with each other at the bottom or side of the trapezoid. In this case, the sewing line 7 does not have to be the entire circumference, but may be only the other three sides excluding the continuous sides.

【００１０】次に、図１（ｃ）に示す様に、２枚の基布
１，２の両上部角部５，６を摘んで基布の重ね合わせ面
に略直角に寄せて耳状突起部２０，２１を形成する。こ
のとき２つの耳状突起部２０，２１の高さが同程度で略
対称的になる様にする。次いで、前記耳状突起部を重ね
合わせ面に直角に順次縫製して縫製線１１，１２を形成
する。ここで上記周囲の縫製７と耳状突起部２０，２１
の縫製１１，１２の縫製作業は、エアバッグ１０の外側
から行うことができるので縫製作業が簡単となり、縫製
機で連続して容易に行うことが可能となる。Next, as shown in FIG. 1 (c), the upper corners 5, 6 of the two base cloths 1, 2 are picked up and brought into a position substantially perpendicular to the superimposed surface of the base cloths to form ear-shaped projections. Parts 20 and 21 are formed. At this time, the heights of the two ear-shaped projections 20 and 21 are set to be substantially the same and substantially symmetric. Next, the ear-like projections are sequentially sewn at right angles to the overlapping surface to form sewing lines 11 and 12. Here, the surrounding sewing 7 and the ear-shaped projections 20, 21
Can be performed from the outside of the airbag 10, so that the sewing operation can be performed easily and continuously with a sewing machine.

【００１１】次に、このエアバッグ１０の内側を、イン
フレータ取付口３から引き出してエアバッグ１０全体を
裏返す。するとエアバッグ１０は、前記耳状突起部２
０，２１及びその縫製線１１，１２と、縫製線７の縫い
代（縫製線７の外側部分）が、図１（ｄ）に点線で示す
様に、バッグ内部に収納され、バッグ外部にはそれらの
縫合線のみが現れる。この様にして作成されたエアバッ
グ１０の平面形状は、図示する様に、２つの耳部２０，
２１により周方向に生地が寄せられるため、前記縫製線
１２部分が丸みを有し、台形の下底辺部４の側は、長方
形に近似した形状となる。Next, the inside of the airbag 10 is pulled out from the inflator mounting opening 3 and the entire airbag 10 is turned over. Then, the airbag 10 is connected to the ear-shaped protrusion 2.
As shown by the dotted lines in FIG. 1 (d), the sewing lines 0 and 21 and the sewing lines 11 and 12 thereof and the seam allowance of the sewing line 7 (the outer portion of the sewing line 7) are stored inside the bag. Only the suture appears. The planar shape of the airbag 10 thus created has two ears 20,
Since the fabric is moved in the circumferential direction by 21, the sewing line 12 has a rounded shape, and the trapezoidal lower bottom side 4 has a shape approximate to a rectangle.

【００１２】次に図２により、上記エアバッグ１０の膨
張状態を説明する。図２において、７は２枚の基布１，
２の重ね合わせ面を示す縫合線、１２，１２は耳状突起
部２０，２１の内側の縫合線である。又、エアバッグ１
０の側面は略逆三角形になっており、その結果、膨張状
態の助手席用エアバッグ１０は、図３に示す様に、耳状
突起部の縫製線１２，１２が幅方向の突っ張りとなるた
め、この縫製線１２，１２を含む部分が平面状となり、
全体としてエアバッグ１０が助手席の乗員を広い面積で
保護することになる。前記２つの耳状突起部による折り
込み位置を適当に調整すれば、エアバッグ１０の上面が
インストルメントパネル１５に沿った形状となり、展開
状態を安定することができる。Next, the inflated state of the airbag 10 will be described with reference to FIG. In FIG. 2, reference numeral 7 denotes two base cloths 1,
Reference numeral 12 denotes a suture line indicating a superimposed surface, and reference numerals 12 and 12 denote suture lines inside the ear-shaped projections 20 and 21. Also, airbag 1
As shown in FIG. 3, the passenger side airbag 10 in the inflated state has the sewn lines 12, 12 of the ear-like projections in the width direction of the inflated passenger airbag 10, as shown in FIG. Therefore, the portion including the sewing lines 12 and 12 becomes planar,
As a whole, the airbag 10 protects the occupant in the passenger seat with a large area. If the folding position by the two ear-shaped projections is appropriately adjusted, the upper surface of the airbag 10 has a shape along the instrument panel 15 and the deployed state can be stabilized.

【００１３】又、インフレータ１４が車両の水平面に対
して傾斜したインストルメントパネル１５の傾斜面に設
けられ、エアバッグ１０の飛び出し口１６が傾斜面にな
っても、乗員の位置する場所までの距離、即ち頭部まで
の距離Ａ１と腹部までの距離Ｂ１がほぼ同一となり、車
両衝突時にインフレータ取付口からガスが供給される
と、上部が大きく膨張して、その全面で助手席の乗員を
受け止め、適切に保護することができる。更に、インフ
レータ取付口の形成位置を適宜選定することにより、エ
アバッグ１０の上面がフロントガラス１７に接触しない
様にすることが容易にできるので、フロントガラス１７
の破損を防止することも容易となる。Further, even if the inflator 14 is provided on the inclined surface of the instrument panel 15 which is inclined with respect to the horizontal plane of the vehicle, even if the outlet 16 of the airbag 10 becomes an inclined surface, the distance to the place where the occupant is located can be obtained. That is, the distance A1 to the head and the distance B1 to the abdomen are almost the same, and when gas is supplied from the inflator mounting port at the time of a vehicle collision, the upper part expands greatly and receives the occupant in the passenger seat on the entire surface, Can be properly protected. Further, by appropriately selecting the formation position of the inflator attachment port, it is easy to prevent the upper surface of the airbag 10 from contacting the windshield 17.
It is also easy to prevent breakage.

【００１４】[0014]

【発明の効果】本発明のエアバッグは上述のように、台
形状の略中央部の適所にインフレータ取付口を有する第
一基布と、該第一基布と略同寸の第二基布とを重ね合わ
せて、その周縁部を縫製して袋状となし、該台形状の下
底辺の角両端部の基布を耳状に寄せて縫着した後にこれ
を裏返しているので、エアバッグの乗員を受ける部分に
基布の重ね面に直角に生地布を寄せた部分（耳状突起
部）が形成され、エアバッグを膨張させるとこの部分が
高さ方向の突っ張りとなり、この耳状突起部の間の２枚
の布が略平面となり、エアバッグの側面視で逆三角形に
なってエアバッグの上部が大きく膨張する様になるの
で、基布が全体として助手席の乗員を広い面積で保護す
ることが可能となる。又、乗員の頭部とエアバッグとの
距離が小さくなり、頭部拘束開始時間が早くなって頭部
の損傷を減少することができる。逆に乗員の胸部とエア
バッグとの距離が大きくなり、エアバッグの胸部に対す
る影響を小さくすることができ、胸部損傷の減少をもた
らすことができる。As described above, the airbag of the present invention has a first base cloth having an inflator mounting opening at an appropriate position substantially in the center of a trapezoid, and a second base cloth having substantially the same size as the first base cloth. Are overlapped, the peripheral edge thereof is sewn into a bag shape, and the base fabrics at both ends of the lower base of the trapezoidal shape are sewn to the ear shape and sewn, so that the airbag is turned over. A portion (ear-shaped protrusion) is formed in a portion receiving the occupant at right angles to the overlapping surface of the base cloth, and when the airbag is inflated, this portion becomes a tension in the height direction, and this ear-shaped protrusion is formed. The two cloths between the parts become substantially flat, and the upper part of the airbag expands greatly as an inverted triangle in side view of the airbag, so that the base cloth as a whole provides the passenger in the passenger seat with a large area. It becomes possible to protect. Further, the distance between the occupant's head and the airbag is reduced, and the head restraint start time is shortened, so that damage to the head can be reduced. Conversely, the distance between the occupant's chest and the airbag is increased, and the influence of the airbag on the chest can be reduced, which can reduce chest damage.

【００１５】更に、インフレータ取付口を台形状の略中
央部の適所に設けたので、基布が略平面となり、全体と
してエアバッグ１０が助手席の乗員を広い面積で保護す
ることが可能となる。又、エアバッグの縫製に当り、周
囲の縫製と両端の耳状突起部の縫製を行うだけで済み、
且つこの縫製も、エアバッグを裏返すことなく外側から
行うことができるので、縫製工程が容易となり、コスト
低減も可能となる。Further, since the inflator mounting port is provided at an appropriate position substantially in the center of the trapezoid, the base cloth is substantially flat, and the airbag 10 can protect the occupant in the passenger seat over a wide area as a whole. . Also, when sewing the airbag, it is only necessary to sew the surroundings and the ear-shaped protrusions at both ends,
In addition, since the sewing can be performed from the outside without turning over the airbag, the sewing process is facilitated and the cost can be reduced.

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

【図１】本発明の助手用エアバッグの構成とその製造工
程を示す模式図である。FIG. 1 is a schematic diagram showing a configuration of an assistant airbag of the present invention and a manufacturing process thereof.

【図２】本発明の助手席用エアバッグの膨張状態を示す
外観図である。FIG. 2 is an external view showing an inflated state of a passenger airbag of the present invention.

【図３】本発明の助手席用エアバッグの膨張状態と乗員
との関係位置を示す概略図である。FIG. 3 is a schematic diagram showing the relationship between the inflated state of the passenger airbag and the occupant of the present invention.

【図４】従来の助手席用エアバッグの外観図である。FIG. 4 is an external view of a conventional passenger airbag.

【図５】従来のトップマウント方式の場合の助手席用エ
アバッグの膨張状態を示す模式図である。FIG. 5 is a schematic diagram showing an inflated state of a passenger airbag in the case of a conventional top mount system.

【図６】従来のトップミッドマウント方式の場合の助手
席用エアバッグの膨張状態を示す模式図である。FIG. 6 is a schematic view showing an inflated state of a passenger airbag in the case of a conventional top mid-mount system.

【符号の説明】[Explanation of symbols]

１ 第一基布 ２ 第二基布 ３ インフレータ取付口 ４ 下底辺 ５，６ 角両端部 ７ 縫製線 ８ 袋形状 １０ エアバッグ １１，１２ 縫製線 １５ インストルメントパネル １７ フロントガラス ２０，２１ 耳状突起部 DESCRIPTION OF SYMBOLS 1 1st base fabric 2 2nd base fabric 3 inflator mounting opening 4 lower base 5,6 both ends 7 sewing line 8 bag shape 10 airbag 11,12 sewing line 15 instrument panel 17 windshield 20,21 ear projection Department

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 エアバッグ（１０）の飛び出し口が車両
の水平面に対して傾斜したインストルメントパネル（１
５）の傾斜面に形成されている助手席用エアバッグ装置
に使用するエアバッグであって、 台形状の略中央部の適所にインフレータ取付口（３）を
有する第一基布（１）と、該第一基布と略同寸の第二基
布（２）とを重ね合わせて、その周縁部を縫製（７）し
て袋状（８）となし、該台形状の下底辺（４）の角両端
部（５），（６）の基布を耳状に寄せて縫着した後にこ
れを裏返してなる助手席用エアバッグ。An instrument panel (1) in which an outlet of an airbag (10) is inclined with respect to a horizontal plane of a vehicle.
5) An airbag for use in an airbag device for a passenger seat formed on an inclined surface of (5), comprising: a first base cloth (1) having an inflator mounting port (3) at an appropriate position substantially in the center of a trapezoid; The first base cloth and the second base cloth (2) having substantially the same dimensions are overlapped, and the peripheral edge thereof is sewn (7) to form a bag (8), and the trapezoidal lower base (4) is formed. ), The base cloths at both ends (5) and (6) of the passenger seat are sewn toward the ears and sewn, and then turned over. 【請求項２】 前記インフレータ取付口（３）を、エア
バッグ（１０）が展開した状態でフロントガラス（１
７）に接触しない様な位置に形成してなる請求項１に記
載の助手席用エアバッグ。2. A windshield (1) with the inflator mounting opening (3) in a state where an airbag (10) is deployed.
2. The passenger airbag according to claim 1, wherein the airbag is formed at a position so as not to contact with (7). 【請求項３】 前記第一基布（１）と第二基布（２）と
が、その１辺で連続した１枚の基布である請求項１又は
２に記載の助手席用エアバッグ。3. The passenger airbag according to claim 1, wherein the first base cloth (1) and the second base cloth (2) are one base cloth continuous on one side thereof. .