JP3292253B2

JP3292253B2 - Airbag

Info

Publication number: JP3292253B2
Application number: JP13566192A
Authority: JP
Inventors: 寿文吉村; 亮菊地; 昭二飯沼; 義晴園田
Original assignee: Isuzu Motors Ltd
Current assignee: Isuzu Motors Ltd
Priority date: 1992-04-30
Filing date: 1992-04-30
Publication date: 2002-06-17
Anticipated expiration: 2017-06-17
Also published as: JPH05305851A

Abstract

PURPOSE:To ameliorate the form of an air bag being installed in an instrument panel of a car. CONSTITUTION:A bag 70 to be housed in the case of an air bag module has a strip main part member 76, and a side member 74 being joined to both sides of this strip main part member 76, and it comes to a pyramidal form in time of being unfolded. The side member 74 with a polygonal plane form is composed of a side being circumscribed to a circle with a center point O. So, if this bag 70 is folded in a rectangular plane form along a bend line, this bend line is collected along a rectangular long side. Accordingly, smooth unfolding is secured and, what is more, its accommodation into the case becomes facilitated.

Description

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

【０００１】[0001]

【産業上の利用分野】本発明の車両に装備して保護する
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 provided in a vehicle for protection.

【０００２】[0002]

【従来の技術】車両のインストルメントパネル内に装備
されて衝突時に展開するエアバッグは、折り畳まれた状
態のバッグとバッグ内にガスを供給するインフレータと
をケース内に収容してモジュール化し、このモジュール
を車両の支持部材にとりつけてある。バッグは、例えば
布状の材料を袋状に縫合することで形成され、このバッ
グを折り畳んでケース内に収容される。例えば特開平３
−１８６４４８号公報は縫合により作成されたバッグを
開示している。2. Description of the Related Art An airbag mounted in an instrument panel of a vehicle and deployed at the time of a collision is modularized by accommodating a folded bag and an inflator for supplying gas into the bag in a case. The module is mounted on the vehicle support. The bag is formed, for example, by sewing a cloth material into a bag shape, and the bag is folded and accommodated in a case. For example, JP
JP-186448 discloses a bag made by suturing.

【０００３】[0003]

【発明が解決しようとする課題】バッグは車両のデザイ
ン等に応じて展開形状が決定されるが、ガスを導入する
ための開口部はケースやインフレータの形状に応じて決
定される。一般的に、バッグは２枚の側面部材と、側面
部材の間に配設される主体部材の３枚の布を縫合した構
造を有する。バッグは折り畳んだ状態でケース内に収容
されるが、円滑に展開されるように折り畳む必要があ
る。したがって、バッグを平面状に畳んだときに、でき
るだけ簡素な形状となることが望ましい。本発明は側面
部材の形状を改良することにより平面に畳んだときに、
折り線となる辺を一直線上に集めて、ケースへの収容と
展開を容易とするバッグを提供するものである。The deployment shape of the bag is determined according to the design of the vehicle and the like, but the opening for introducing gas is determined according to the shape of the case and the inflator. Generally, a bag has a structure in which two side members and three cloths of a main member disposed between the side members are stitched. The bag is stored in the case in a folded state, but it is necessary to fold the bag so that it is smoothly deployed. Therefore, when the bag is folded flat, it is desirable that the shape be as simple as possible. The present invention, when folded into a plane by improving the shape of the side member,
The purpose of the present invention is to provide a bag in which the sides to be folded are gathered in a straight line, and the bag is easily housed and deployed in a case.

【０００４】[0004]

【課題を解決するための手段】本発明のバッグは、帯状
の主体部材と、帯状の主体部材の両側部に縫合等の接合
手段により接合される側面部材を備え、展開形状は袋状
となる。側面部材の平面形状は、側面部材内に中心を有
する円の接線群で囲まれた多角形に形成してある。The bag of the present invention comprises a belt-shaped main member and side members joined to both sides of the band-shaped main member by means of joining means such as suturing. . The planar shape of the side member is formed as a polygon surrounded by a tangent group of circles having a center in the side member.

【０００５】[0005]

【作用】バッグを平面形状に折り畳む際に、折り縁は一
直線上に集められ、エアバッグモジュールのケース内に
容易に収容することができ、展開もスムーズとなる。When the bag is folded into a planar shape, the folded edges are gathered in a straight line, and can be easily housed in the case of the airbag module, and the deployment is smooth.

【０００６】[0006]

【実施例】図１は本発明を実施する車両の概要を示す説
明図、図２はエアバッグの全体図である。車両１０の内
部には運転席１２、助手席１４が設けられ、運転席１
２、助手席１４の前部にはインストルメントパネル２０
が配設される。助手席１４の前部のインストルメントパ
ネル２０内にエアバッグモジュール５０が装備される。
エアバッグモジュール５０は、エアバッグやインフレー
タを収容するケース５２、５４を備え、ケースの開口部
にはドア６０が設けられる。1 is an explanatory view showing an outline of a vehicle embodying the present invention, and FIG. 2 is an overall view of an airbag. A driver seat 12 and a passenger seat 14 are provided inside the vehicle 10, and the driver seat 1 is provided.
2. Instrument panel 20 in front of passenger seat 14
Is arranged. An airbag module 50 is provided in the instrument panel 20 at the front of the passenger seat 14.
The airbag module 50 includes cases 52 and 54 that house an airbag and an inflator, and a door 60 is provided at an opening of the case.

【０００７】図３はエアバッグの作動時の状況を示すも
ので、車両１０の衝突をセンサが感知すると、その電気
信号によりインフレータが作動してガスを発生する。発
生したガスはケース内に折り畳まれて収容されているバ
ッグ内に送り込まれてバッグを膨張させる。膨張したバ
ッグはその内圧により開口部のドア６０を外方へ押し開
けて拡開する。FIG. 3 shows a situation when the airbag is activated. When a sensor detects a collision of the vehicle 10, an inflator is activated by an electric signal to generate gas. The generated gas is fed into the bag folded and stored in the case to inflate the bag. The inflated bag is opened by pushing the door 60 at the opening outward by the internal pressure.

【０００８】図４はバッグ７０が規定の形状に展開した
状態を示す。バッグ７０は、ガスを吹き込むためのイン
フレータ側への接続部である開口部７２、助手席側へ展
開される帯状の主体部材７４、主体部材７４の両側に形
成される側面部材７６等から構成され、袋状に縫合され
る。図５は、バッグ７０を平面状態に折り畳んだ形状を
示す。平面形状は一般には長方形とはならず、この場合
には両側部８０を折り返して長方形とする必要がある。FIG. 4 shows a state in which the bag 70 has been developed into a prescribed shape. The bag 70 is composed of an opening 72 which is a connecting portion to the inflator side for blowing gas, a band-shaped main member 74 deployed to the passenger seat side, side members 76 formed on both sides of the main member 74, and the like. Sewn into a bag. FIG. 5 shows a shape in which the bag 70 is folded in a planar state. The planar shape is generally not rectangular, and in this case, it is necessary to turn both sides 80 back to form a rectangle.

【０００９】図６は本発明のバッグ７０の側面図、図７
は展開した状態のバッグ７０の斜視図、図８は平面形状
に折り畳まれたバッグ７０の斜視図である。側面部材７
４は、多角形の平面形状を有するもので、本実施例にお
いては、５つの頂点Ａ、Ｂ、Ｃ、Ｄ、Ｅを有する５角形
の側面部材が示されている。この５角形の各辺ＡＢ、Ｂ
Ｃ、ＣＤ、ＤＥＰ_２、ＥＡＰ_３は、それぞれ中心点Ｏを
中心とする半径ｒの円Ｍに外接する。両側面部材７４の
間に配設される主体部材７６は帯状の部材であって、平
面形状は長方形となる。この主体部材７６と両側面部材
を縫合して得られるバッグ７０の展開形状は、多角柱と
なる。この多角柱のバッグ７０は点Ｏから辺ＢＣに降し
た垂線ＯＰ_１と、凹の頂点Ｅと点Ｏを結ぶ辺ＯＥとを山
折りとし、点Ｏと各凸の頂点Ａ、Ｂ、Ｃ、Ｄを結ぶ辺Ｏ
Ａ、ＯＢ、ＯＣ、ＯＤを谷折りにして折り畳むことによ
り図８に示すような長方形の平面形状に折り畳まれたバ
ッグを得ることができる。両側面部材の頂点Ａを結ぶ辺
ＡＡに沿って開口部７２を設け、この開口部７２をケー
ス内のインフレータに対向させるとともに、辺ＣＣを先
端として折り畳み、ケース内に収容してエアバッグモジ
ュールを完成する。FIG. 6 is a side view of the bag 70 of the present invention, and FIG.
Is a perspective view of the bag 70 in an unfolded state, and FIG. 8 is a perspective view of the bag 70 folded in a planar shape. Side member 7
Reference numeral 4 denotes a polygonal planar shape. In this embodiment, a pentagonal side member having five vertices A, B, C, D, and E is shown. Each side AB, B of this pentagon
C, CD, DEP ₂ , and EAP ₃ each circumscribe a circle M having a radius r centered on the center point O. The main member 76 disposed between the side members 74 is a band-shaped member, and has a rectangular planar shape. The developed shape of the bag 70 obtained by sewing the main body member 76 and both side members is a polygonal prism. Bag 70 of the polygonal prism is a perpendicular OP ₁ with drop-off from the point O to the side BC, and the side OE connecting concave vertex E and the point O as a crease, the point O and the vertex A of the convex, B, C, Side O connecting D
By folding A, OB, OC, and OD in a valley fold, a bag folded into a rectangular planar shape as shown in FIG. 8 can be obtained . An opening 72 is provided along a side AA connecting the vertices A of the both side members, and the opening 72 is opposed to an inflator in the case, and is folded with the side CC as a tip and housed in the case to accommodate the airbag module. Complete.

【００１０】なお、図示の実施例では、点Ｏが平面形状
の内部にくるように折り畳んだが、逆に点Ｏが外側にく
るように折り畳むこともできる。この場合には、折り線
の山と谷を逆にすればよい。外側部に引き出された部分
は内側に折り返して長方形をつくればよい。実際のバッ
グにあっては、モジュールのケースの幅寸法に比べて展
開したバッグの助手席側の幅寸法を大きくとる場合があ
る。１．折り畳んだ状態で、モジュール側と助手席側で幅を
変えてやる。２．助手席側の幅で一定とし、モジュールにつながる側
の帯状布の部分を延長し絞り込む。３．助手席側の幅で一定とし、折り畳んだ状態で、モジ
ュールにつながる部分を縫製するなどして絞り込む。４．助手席側の幅で一定とし、モジュール幅の穴だけを
開ける。等の方法がある。In the illustrated embodiment, the point O is folded so that the point O comes inside the plane shape, but the point O can be folded so that it comes outside. In this case, the peaks and valleys of the folding line may be reversed. The part drawn out to the outside may be folded inward to make a rectangle. In an actual bag, the width of the deployed bag on the passenger seat side may be larger than the width of the module case. 1. In the folded state, the width is changed between the module side and the passenger side. 2. The width on the passenger seat side is constant, and the band-shaped cloth part connected to the module is extended and narrowed down. 3. The width on the passenger seat side is constant, and in the folded state, the area connected to the module is sewn to narrow down. 4. Make the width constant on the passenger seat side and make holes only for the module width. And so on.

【００１１】[0011]

【発明の効果】本発明は以上のように、多角形状の側面
部材と帯状の主体部材を縫合してバッグを形成する。部
材は直線で囲まれた形状であるので、機械により容易に
裁断することができる。また、縫合部も直線となるの
で、縫合の自動化も容易となる。バッグを平面状態に畳
んだときに、バッグは長方形となるので、ケースへの畳
み込みも容易となり、確実な展開となる。また、折り線
も長方形の側縁上にならぶので、展開に合理的な形状と
なる。As described above, the present invention forms a bag by suturing a polygonal side member and a belt-shaped main member. Since the member has a shape surrounded by a straight line, it can be easily cut by a machine. Further, since the sewn portion is also straight, automation of suturing becomes easy. When the bag is folded in a flat state, the bag becomes rectangular, so that it can be easily folded into the case, and the bag can be reliably deployed. In addition, since the folding lines are also arranged on the side edges of the rectangle, the folding line has a shape that is reasonable for development.

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

【図１】本発明を実施する車両の斜視図。FIG. 1 is a perspective view of a vehicle embodying the present invention.

【図２】エアバッグモジュールの斜視図。FIG. 2 is a perspective view of an airbag module.

【図３】エアバッグの展開を示す説明図。FIG. 3 is an explanatory view showing the deployment of the airbag.

【図４】展開したバッグの斜視図。FIG. 4 is a perspective view of the deployed bag.

【図５】バッグを平面に畳んだときの一般形状を示す説
明図。FIG. 5 is an explanatory view showing a general shape when the bag is folded in a plane.

【図６】本発明のバッグの側面図。FIG. 6 is a side view of the bag of the present invention.

【図７】バッグの斜視図。FIG. 7 is a perspective view of a bag.

【図８】バッグを平面に折り畳んだ形状を示す斜視図。FIG. 8 is a perspective view showing a shape in which the bag is folded flat.

【符号の説明】[Explanation of symbols]

１０車両１４助手席２０インストルメントパネル３０乗員５０エアバッグモジュール７０バッグ７４側面部材７６主体部材 Reference Signs List 10 vehicle 14 passenger seat 20 instrument panel 30 occupant 50 airbag module 70 bag 74 side member 76 main member

フロントページの続き (72)発明者園田義晴神奈川県藤沢市土棚８番地いすゞ自動車株式会社藤沢工場内 (56)参考文献特開平３−186448（ＪＰ，Ａ) (58)調査した分野(Int.Cl.⁷，ＤＢ名) B60R 21/16 - 21/32 Continuation of the front page (72) Inventor Yoshiharu Sonoda No. 8 Tsuchiya, Fujisawa-shi, Kanagawa Prefecture Isuzu Motors Corporation Fujisawa Plant (56) References JP-A-3-186448 (JP, A) (58) Fields investigated ( Int.Cl. ⁷ , DB name) B60R 21/16-21/32

Claims

(57)【特許請求の範囲】(57) [Claims]

【請求項１】折り畳まれたバッグと、バッグにガスを
供給するインフレータと、バッグ及びインフレータを収
容するケースと、ケースの開口部に設けられたヒンジド
アを備えたエアバッグであって、バッグは、帯状の主体
部材と、主体部材の両側部に接合される側面部材とを備
え、側面部材の平面形状は、円の接線群に囲まれる多角
形であるとともに、バッグを折り曲げたときに生ずる頂
点は、円の中心から接線に向かって下ろした垂線の足で
あるエアバッグ。1. An airbag comprising a folded bag, an inflator for supplying gas to the bag, a case accommodating the bag and the inflator, and a hinge door provided at an opening of the case, wherein the bag comprises: It has a band-shaped main member and side members joined to both sides of the main member, and the side member has a polygonal shape surrounded by a group of tangents of circles, and a top formed when the bag is bent.
The point is a perpendicular foot lowered from the center of the circle toward the tangent.
An airbag.