JP2006335130A - Airbag device - Google Patents

Airbag device Download PDF

Info

Publication number
JP2006335130A
JP2006335130A JP2005159596A JP2005159596A JP2006335130A JP 2006335130 A JP2006335130 A JP 2006335130A JP 2005159596 A JP2005159596 A JP 2005159596A JP 2005159596 A JP2005159596 A JP 2005159596A JP 2006335130 A JP2006335130 A JP 2006335130A
Authority
JP
Japan
Prior art keywords
airbag
occupant
folded
roll
section
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.)
Pending
Application number
JP2005159596A
Other languages
Japanese (ja)
Inventor
Hidenobu Suzuki
秀伸 鈴木
Katsuhiro Tokita
勝弘 時田
Hiroki Fukazawa
広樹 深澤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nihon Plast Co Ltd
Original Assignee
Nihon Plast Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nihon Plast Co Ltd filed Critical Nihon Plast Co Ltd
Priority to JP2005159596A priority Critical patent/JP2006335130A/en
Publication of JP2006335130A publication Critical patent/JP2006335130A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Air Bags (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an airbag device capable of preventing an occupant constraining surface arranged on the upper side of the airbag from coming into direct contact with the neck and the jaw of an occupant. <P>SOLUTION: An airbag 2 includes: a mouth section 2i consecutively-arranged around a gas inlet 2d provided at a base end thereof with an inflator 5, which is arranged in the opposite direction X of that of the airbag inflation; a branch section 2f consecutively arranged on the mouth section 2i which is interposed between an upper roll-shaped section 2k of upper folded body and a lower roll-shaped section 2j of lower folded body. The lower roll-shaped section 2j is located at the under stream of the branch section 2f, and the upper roll-shaped section 2k is located at the upper stream thereof, thereby storing both sections inside a case 3. Accordingly an upper roll-shaped section 2g inflates while oscillating upwardly so that an upper occupant constraining section 2g is activated. This can prevent the upper roll-shaped section 2g from directly coming into contact with the neck and the jaw of the occupant, even if the airbag 2 inflates in the vicinity of a small occupant. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、車両の衝突時等において乗員を保護するエアバッグ装置、特に助手席に着座した乗員を保護するエアバッグ装置に関する。   The present invention relates to an airbag device that protects an occupant in the event of a vehicle collision, and more particularly to an airbag device that protects an occupant seated in a passenger seat.

従来自動車が衝突した際の衝撃から乗員を保護するエアバッグ装置は、保護する乗員の着座位置に応じて装着位置を変えており、助手席に着座した乗員を保護するエアバッグ装置は、通常助手席前方のインストルメントパネル内に装着されている。   Conventionally, an airbag device that protects an occupant from an impact when a car collides changes the mounting position according to the seating position of the occupant to be protected, and an airbag device that protects an occupant seated in a passenger seat is usually an assistant. It is installed in the instrument panel in front of the seat.

また助手席用のエアバッグ装置は、ナイロン等の織布を例えば円形に裁断した複数枚の基布パネルを袋状に縫製することにより形成されたエアバッグを備えていて、このエアバッグは折り畳まれた状態でエアバッグモジュールを構成するケース内に収容されており、自動車が衝突した際インフレータより噴出される高圧ガスにより乗員側へ瞬時に膨張展開されるようになっている。   Further, the airbag device for the passenger seat includes an airbag formed by sewing a plurality of base fabric panels obtained by cutting a woven fabric such as nylon into a bag shape, and the airbag is folded. In this state, the airbag module is housed in a case, and is inflated and deployed instantaneously to the occupant side by the high-pressure gas ejected from the inflator when the automobile collides.

一方折り畳まれた状態でケース内に収容されたエアバッグを、自動車の衝突時瞬時に乗員側へ膨張展開させるために、エアバッグの折り畳み方法に種々工夫がなされている。   On the other hand, in order to inflate and deploy the airbag housed in the case in a folded state toward the occupant side at the time of a car collision, various devices have been devised in the airbag folding method.

例えば特許文献1に記載された助手席用エアバッグ装置では、エアバッグを袋体と、インフレータから袋体にガスを導入するマウス部と、ケースに対する固定部から形成している。   For example, in the passenger seat airbag device described in Patent Document 1, the airbag is formed of a bag body, a mouth portion for introducing gas from the inflator into the bag body, and a fixing portion for the case.

そしてマウス部がケースの中央部となるように配置して、マウス部とケースの両側内面との間に袋体の上部と下部をそれぞれ折り畳んで収容しており、自動車の衝突時インフレータからガスがマウス部へ噴出されると、エアバッグの展開初期に、エアバッグの中央後面部分のみが先に緊張した状態で展開されるようになっている。   And the mouse part is arranged so that it is the center part of the case, and the upper part and the lower part of the bag body are folded and accommodated between the mouse part and the inner surfaces of both sides of the case. When ejected to the mouse portion, only the central rear surface portion of the airbag is deployed in a state of being previously tensioned at the initial stage of deployment of the airbag.

これによってエアバッグの展開途中で、仮にエアバッグの中央後面部分に乗員が接触したとしても、中央部分の展開が終了しているため、乗員とエアバッグとの間で擦れが発生する虞がない等の効果を有している。
特開平11−115664号公報。
As a result, even if the occupant comes into contact with the central rear surface portion of the airbag during the deployment of the airbag, the deployment of the central portion is completed, so there is no risk of rubbing between the occupant and the airbag. It has effects such as.
JP-A-11-115664.

しかしケース内に折り畳まれた状態で収容されたエアバッグは、エアバッグの展開初期には、ケースの内側面に展開方向がガイドされるが、一旦ケース内より出てしまうと、エアバッグの展開方向は、エアバッグの形状やフロントガラスの内面により制御されるようになる。   However, the airbag housed in a folded state in the case is guided in the direction of deployment on the inner side of the case at the initial stage of deployment of the airbag. The direction is controlled by the shape of the airbag and the inner surface of the windshield.

このため特許文献1に記載のエアバッグ装置のように、エアバッグの中央後面部分のみが先に緊張した状態で展開されるようにしたものでは、助手席に着席している乗員の頭部付近に圧力の高い中央後面部分が当接するおそれがある。   For this reason, as in the airbag device described in Patent Document 1, only the central rear surface portion of the airbag is deployed in a state in which the airbag is previously tensioned. In the vicinity of the head of the passenger seated in the passenger seat There is a possibility that the central rear surface portion having a high pressure may come into contact with.

また助手席に着座していた子供等の小柄な乗員がインストルメントパネルの直前に立ち上がった状態のときにエアバッグが展開された場合、圧力の高い中央後面部分が頸部付近に入り込むように展開されてしまうおそれもある。   Also, if a small passenger such as a child sitting in the passenger seat stands up just before the instrument panel, the airbag will be deployed so that the central rear surface with high pressure enters near the neck. There is also a risk of being done.

本発明はかかる問題を改善するためになされたもので、エアバッグの上部乗員拘束部が乗員の頸部や顎に直接入り込むことがないエアバッグ装置を提供することを目的とするものである。   The present invention has been made to remedy such a problem, and an object of the present invention is to provide an airbag device in which the upper occupant restraint portion of the airbag does not directly enter the neck or chin of the occupant.

本発明のエアバッグ装置は、折り畳まれケース内に収容されたエアバッグを、自動車が衝突した際インフレータより噴出される高圧ガスにより乗員側へ膨張展開させて、衝突時の衝撃から乗員を保護するエアバッグ装置であって、前記エアバッグが、前記インフレータが装着された基端側に連なるマウス部を前記エアバッグの反展開方向に配置すると共に、前記マウス部に連なる分岐部を間にして上部折り畳み体と下部折畳み体とを連ね、前記ケース内に、前記分岐部の下方に前記下部折り畳み体を位置させ、前記分岐部の上方に前記上部折り畳み体を位置させて、収納されたものである。   The airbag apparatus of the present invention inflates and deploys an airbag, which is folded and accommodated in a case, to the occupant side by high-pressure gas ejected from an inflator when an automobile collides, thereby protecting the occupant from the impact at the time of collision. An airbag device, wherein the airbag is arranged with a mouth portion connected to a base end side to which the inflator is attached arranged in a non-deployment direction of the airbag and with a branch portion connected to the mouth portion interposed therebetween. A folded body and a lower folded body are connected together, and the lower folded body is positioned below the branch portion and the upper folded body is positioned above the branch portion and stored in the case. .

前記構成により、折り畳まれたエアバッグが展開される際、上部折り畳み体と下部折り畳み体のほぼ中間に位置する分岐部を境にして、上部折り畳み体が上方へ首を振るように展開され、また下部折り畳み体が下方へ首を振るように展開されながら、最終的には上下部折り畳み体と分岐部がほぼ同一平面となった状態で乗員を捕捉するため、衝突時の衝撃から乗員を確実に保護することができると共に、上部折り畳み体が上方へ首を振るように展開されることにより、座席に着座していた子供等の小柄な乗員がインストルメントパネルの直前に立ち上がった状態のときにエアバッグが展開された場合でも、エアバッグの上部折り畳み体が乗員の頸部や顎に直接入り込むことがない。   With the above configuration, when the folded airbag is deployed, the upper folded body is deployed such that the upper folded body swings upward at the branch portion located approximately in the middle between the upper folded body and the lower folded body. While the lower folding body is deployed so as to swing its head downward, the upper and lower folding bodies and the bifurcation part are finally captured in the almost same plane, so the occupant can be surely protected from the impact at the time of collision. It can be protected and the upper folding body is deployed so as to swing its head upward, so that a small occupant such as a child sitting on the seat is in the state of standing up just before the instrument panel. Even when the bag is deployed, the upper folded body of the airbag does not directly enter the occupant's neck or chin.

また本発明のエアバッグ装置は、請求項1に記載のエアバッグにおいて、前記上部折り畳み体が、ロール状に折畳まれていることを特徴とするものである。   Moreover, the airbag apparatus of this invention is an airbag of Claim 1, The said upper folding body is folded in roll shape, It is characterized by the above-mentioned.

前記構成により、上部折り畳み体がロール状に折畳まれていることから、エアバッグが乗員の頭部側へ平坦形状を形成しながら展開することになって、乗員にとって好ましい展開とすることができる。   With the above configuration, since the upper folded body is folded in a roll shape, the airbag is deployed while forming a flat shape toward the head of the occupant, which can be a favorable deployment for the occupant. .

本発明のエアバッグ装置によれば、折り畳まれたエアバッグが展開される際、上部折り畳み体と下部折り畳み体のほぼ中間に位置する分岐部を境にして、上部折り畳み体が上方へ首を振るように展開され、また下部折り畳み体が下方へ首を振るように展開されながら、最終的には上下部折り畳み体と分岐部がほぼ同一平面となった状態で乗員を捕捉するため、衝突時の衝撃から乗員を確実に保護することができると共に、上部折り畳み体が上方へ首を振るように展開されることにより、座席に着座していた子供等の小柄な乗員がインストルメントパネルの直前に立ち上がった状態のときにエアバッグが展開された場合でも、エアバッグの上部折り畳み体が乗員の頸部や顎に直接入り込むことがない。   According to the airbag device of the present invention, when the folded airbag is deployed, the upper folded body swings its head upward at the branch portion located approximately in the middle between the upper folded body and the lower folded body. In order to capture the occupant in the state where the upper and lower folded bodies and the bifurcation are almost flush with each other, the lower folded body is deployed so as to swing the head downward. A small passenger such as a child seated in the seat stands up just in front of the instrument panel by unfolding the upper folding body so that it can protect the occupant from impact and swing the head upward. Even when the airbag is deployed in a state of being in a state of being in a state, the upper folded body of the airbag does not directly enter the occupant's neck or chin.

本発明の実施の形態を、図面を参照して詳述する。   Embodiments of the present invention will be described in detail with reference to the drawings.

図1は助手席用のエアバッグ装置を自動車のインストルメントパネル内に設置した状態の構成図、図2はエアバッグ装置を構成するエアバッグモジュールの断面図、図3は展開された状態のエアバッグの斜視図、図4は折り畳んだ状態のエアバッグの斜視図、図5は図4のA−A線に沿う断面図、図6ないし図9はエアバッグの折り畳み手順を示す説明図、図10ないし図13はエアバッグ装置の作用説明図である。   FIG. 1 is a configuration diagram of a state in which an airbag device for a passenger seat is installed in an instrument panel of an automobile, FIG. 2 is a cross-sectional view of an airbag module constituting the airbag device, and FIG. 3 is an airbag in a deployed state. FIG. 4 is a perspective view of the airbag in a folded state, FIG. 5 is a cross-sectional view taken along line AA of FIG. 4, and FIGS. 6 to 9 are explanatory diagrams and diagrams showing a procedure for folding the airbag. 10 to 13 are explanatory views of the operation of the airbag apparatus.

図2に示すエアバッグモジュール1は、エアバッグ2を収容するケース3と、ケース3の底部にリテーナ4を介して取り付けられたインフレータ5及びエアバッグモジュール1を、車室6内の前部に設置されたインストルメントパネル7の内側へ固定するためのブラケット8とから構成されている。   An airbag module 1 shown in FIG. 2 includes a case 3 that accommodates an airbag 2, an inflator 5 that is attached to the bottom of the case 3 via a retainer 4, and the airbag module 1 at a front portion in a vehicle compartment 6. It is comprised from the bracket 8 for fixing to the inner side of the installed instrument panel 7. FIG.

ケース3は上面が開口し、かつ車幅方向に長いほぼ長方形の箱形に形成されていて、樹脂や金属により一体成形されている。   The case 3 is formed in a substantially rectangular box shape having an upper surface open and long in the vehicle width direction, and is integrally formed of resin or metal.

ケース3の底部3aには、インフレータ取り付け孔3bが開口されていて、このインフレータ取り付け孔3bよりインフレータ5のガス噴出部5aが下方より嵌合されており、インフレータ5の外周面に突設されたフランジ部5bと、エアバッグ2内に設けられたリテーナ4の間を、リテーナ4側から突設された図示しない固着具により結合することにより、ケース3の底部3aにインフレータ5が取り付けられている。   An inflator attachment hole 3b is opened at the bottom 3a of the case 3, and a gas ejection part 5a of the inflator 5 is fitted from below through the inflator attachment hole 3b, and is projected from the outer peripheral surface of the inflator 5. The inflator 5 is attached to the bottom 3a of the case 3 by connecting the flange portion 5b and the retainer 4 provided in the airbag 2 with a fixing tool (not shown) protruding from the retainer 4 side. .

エアバッグ2は図3に示すように、ナイロン等の織布をほぼ円形に裁断した複数枚、例えば2枚の基布パネル2a,2bを重ねた状態で周縁部を縫着することにより袋状に形成されていて、展開時上側となる基布パネル2aには、ガスを排出するベントホール2cが、また下側となる基布パネル2bには、ガス導入口2dが形成されている。   As shown in FIG. 3, the airbag 2 is formed into a bag-like shape by sewing a peripheral portion in a state where a plurality of, for example, two base fabric panels 2a and 2b are overlapped, which is formed by cutting a woven fabric such as nylon into a substantially circular shape. A vent hole 2c for discharging gas is formed in the base fabric panel 2a which is formed on the upper side during deployment, and a gas introduction port 2d is formed in the base fabric panel 2b on the lower side.

エアバッグ2のガス導入口2dは、ケース3のインフレータ取り付け孔3bとほぼ同大の長方形状に形成されていて、ケース3の底部3aにインフレータ5を取り付ける際、ガス導入口2dの開口縁がリテーナ4と底部3aの内面との間に気密に挟着されている。   The gas introduction port 2d of the airbag 2 is formed in a rectangular shape that is substantially the same size as the inflator attachment hole 3b of the case 3, and when the inflator 5 is attached to the bottom 3a of the case 3, the opening edge of the gas introduction port 2d is Airtightly sandwiched between the retainer 4 and the inner surface of the bottom 3a.

またエアバッグ2は、ケース3に収納する前に次の手順で折り畳まれている。   The airbag 2 is folded in the following procedure before being stored in the case 3.

そしてエアバッグ2は、自動車が衝突した際、乗員を捕捉する乗員拘束面2mを有する乗員拘束部2eと、乗員拘束部2eの上下方向のほぼ中間部に位置して乗員拘束部2eを上部乗員拘束部2g及び下部乗員拘束部2hに区分けする分岐部2fとを有して構成しており、分岐部2fは、インフレータ5が取り付けられるガス導入口2dを基端部としてこれに連なるマウス部2iと乗員拘束部2eとの間に存することになる。   The airbag 2 is positioned at a substantially middle portion in the vertical direction of the occupant restraint portion 2e and the occupant restraint portion 2e having an occupant restraint surface 2m that captures the occupant when the automobile collides with the occupant restraint portion 2e. The branch part 2f is divided into a restraint part 2g and a lower occupant restraint part 2h, and the branch part 2f has a gas inlet 2d to which the inflator 5 is attached as a base end part and a mouse part 2i connected thereto. And the occupant restraint portion 2e.

そして展開された状態からエアバッグ2を折り畳む際、図4に示すように分岐部2fを上面の中央に位置するようにして、上下部乗員拘束部2g,2hが上下方向に細長くなるように乗員拘束面2mの両側部を蛇腹状に折り畳んで、図4及び図5に示す状態にする。   When the airbag 2 is folded from the deployed state, as shown in FIG. 4, the bifurcated portion 2f is positioned at the center of the upper surface so that the upper and lower occupant restraint portions 2g and 2h are elongated in the vertical direction. Both side portions of the restraining surface 2m are folded in a bellows shape to obtain the state shown in FIGS.

このときの折り畳み幅W(図5参照)は、ケース3の車幅方向の長さよりやや小さくすることにより、折り畳んだ状態のエアバッグ2を容易にケース3内に収納できるようになる。   The folding width W (see FIG. 5) at this time is slightly smaller than the length of the case 3 in the vehicle width direction, so that the folded airbag 2 can be easily accommodated in the case 3.

次にマウス部2iがエアバッグ2の反展開方向(車両前方側)Xに配置するため、図6に示すように下部乗員拘束部2hの下端側を持ち上げて、上部乗員拘束部2gの上面側に重ねたら、下端側の端部から矢印B方向にロール折りして図7に示すように下ロール状部2jを形成するが、このときサーベル幅は50mm程度とする。   Next, since the mouse part 2i is arranged in the anti-deployment direction (vehicle front side) X of the airbag 2, the lower end side of the lower occupant restraint part 2h is lifted as shown in FIG. Are stacked in the direction of arrow B from the end on the lower end side to form the lower roll-shaped portion 2j as shown in FIG. 7. At this time, the saber width is about 50 mm.

次に図8に示すようにエアバッグ2の上部乗員拘束部2gの上端側を持ち上げて、下ロール状部2j側へ折り返し、上部乗員拘束部2gの上端側の端部を矢印C方向へロール折りすると、上部乗員拘束部2g側と下部乗員拘束部2h側が分岐部2fを境にして、図9に示すように下ロール状部2jの上に、上部折り畳み体である上ロール状部2kを重ね、互いに逆巻きとなった一対のロール状部を重ねた状態となる。そしてこの状態が崩れないようにフィルム状のカバー10で全体を被覆する。   Next, as shown in FIG. 8, the upper end side of the upper occupant restraint portion 2g of the airbag 2 is lifted and folded back toward the lower roll-shaped portion 2j, and the upper end side end portion of the upper occupant restraint portion 2g is rolled in the direction of arrow C. When folded, the upper occupant restraint portion 2g side and the lower occupant restraint portion 2h side border the branch portion 2f, and the upper roll portion 2k, which is an upper folded body, is placed on the lower roll portion 2j as shown in FIG. A pair of roll-shaped portions that are overlapped and reversely wound are stacked. And the whole is covered with the film-like cover 10 so that this state may not collapse.

従って、エアバッグ2は、マウス部2iを間にして、下ロール状部2jと上ロール状部2kとが連なって構成されていることになる。   Therefore, the airbag 2 is configured such that the lower roll-shaped portion 2j and the upper roll-shaped portion 2k are connected with the mouse portion 2i interposed therebetween.

以上の手順で折り畳んだエアバッグ2をケース3内に収納したら、次にエアバッグモジュール1を次の方法で組み立てる。   After the airbag 2 folded in the above procedure is stored in the case 3, the airbag module 1 is then assembled by the following method.

組み立てに当っては、まずエアバッグ2のガス導入口2dよりリテーナ4をエアバッグ2内に挿入し、リテーナ4によりガス導入口2dの開口縁をケース3の内底面に圧接させた状態で、ケース3のインフレータ取り付け孔3bよりガス噴出部5aを嵌入したインフレータ5のフランジ部5bとリテーナ4を、リテーナ4より突設された固着具で結合して、ガス導入口2dの開口縁をリテーナ4とケース3の底部3aの間に気密に挟着固定する。   In assembly, first, the retainer 4 is inserted into the airbag 2 from the gas inlet 2d of the airbag 2, and the opening edge of the gas inlet 2d is pressed against the inner bottom surface of the case 3 by the retainer 4. The flange portion 5b of the inflator 5 in which the gas ejection portion 5a is inserted from the inflator attachment hole 3b of the case 3 and the retainer 4 are coupled by a fixing tool protruding from the retainer 4, and the opening edge of the gas introduction port 2d is connected to the retainer 4 And the bottom 3a of the case 3 are hermetically sandwiched and fixed.

次にカバー10で被覆したエアバッグ2をケース3の上面開口部よりケース3内に収納すると、図2に示すようにロール折りされたエアバッグ2の下部乗員拘束部2h(下ロール状部2j)が下側に、そしてロール折りされたエアバッグ2の上部乗員拘束部2g(上ロール状部2k)が上方に位置するように重ねられた状態となり、ほぼT字状となった分岐部2fが上下ロール状部2k,2jの境界の前側(フロントガラス9側)に位置するようになる。   Next, when the airbag 2 covered with the cover 10 is housed in the case 3 from the upper surface opening of the case 3, as shown in FIG. 2, the lower occupant restraint portion 2h (lower roll-shaped portion 2j) ) Is placed on the lower side, and the upper occupant restraint portion 2g (upper roll-shaped portion 2k) of the airbag 2 that has been rolled is positioned so as to be positioned on the upper side, and the branch portion 2f that is substantially T-shaped. Is positioned on the front side (front glass 9 side) of the boundary between the upper and lower roll-shaped portions 2k and 2j.

従って、エアバッグ2はケース3に収容する際、分岐部2fの下方に下部折り畳み体である下ロール状部2jを位置させ、分岐部2fの上方に上部折り畳み体である上ロール状部2kを位置させた状態で、ケース3内に収容されることになる。   Therefore, when the airbag 2 is accommodated in the case 3, the lower roll-shaped portion 2j that is the lower folded body is positioned below the branch portion 2f, and the upper roll-shaped portion 2k that is the upper folded body is disposed above the branch portion 2f. In the state where it is positioned, it is accommodated in the case 3.

なおエアバッグ2の折り畳み方により分岐部2fが上下ロール状部2k,2jの境界より上ロール状部2k側または下ロール状部2j側へずれることがあるが、多少のずれは問題ない。   Note that, depending on how the airbag 2 is folded, the branching portion 2f may be displaced from the boundary between the upper and lower roll-shaped portions 2k, 2j toward the upper roll-shaped portion 2k or the lower roll-shaped portion 2j, but there is no problem with some deviation.

以上のようにして組み立てられたエアバッグモジュール1は、図1に示すように助手席12前方のインストルメントパネル7内に組み込まれて使用されるが、次に自動車が衝突した際の作用を図10ないし図13も参照して説明する。   The airbag module 1 assembled as described above is used by being incorporated in the instrument panel 7 in front of the passenger seat 12 as shown in FIG. This will be described with reference to FIGS.

自動車が衝突した際インフレータ5よりエアバッグ2内に高圧ガスが噴出されると、インフレータ5のガス噴出部5a上に折り畳まれた状態で載置されたエアバッグ2がガス圧によりケース3内より押し上げられると同時に、ケース3の上面を覆うインストルメントパネル7の上面の一部がテアライン(図示せず)より開裂され、エアバッグ2を被覆するカバー10も破断される。   When a high-pressure gas is ejected from the inflator 5 into the airbag 2 when the automobile collides, the airbag 2 placed in a folded state on the gas ejection part 5a of the inflator 5 is gas-pressured from the case 3 Simultaneously with the push-up, a part of the upper surface of the instrument panel 7 covering the upper surface of the case 3 is cleaved from the tear line (not shown), and the cover 10 covering the airbag 2 is also broken.

その後エアバッグ2内に形成され、且つ車両前方側Xに配置されるマウス部2iを経て分岐部2fに達した高圧ガスにより、図10及び図11に示すように上ロール状部2kと下ロール状部2jが乗員に向けて膨張展開を開始するが、このとき上ロール状部2kとインフレータ5の間で拘束されている下ロール状部2jに比べて、何の拘束を受けていない上ロール状部2kが図11に示すように先に上方へ向って首を振るように展開される。   Thereafter, the upper roll-shaped portion 2k and the lower roll are formed as shown in FIGS. 10 and 11 by the high-pressure gas formed in the airbag 2 and reaching the branch portion 2f through the mouse portion 2i disposed on the vehicle front side X. The upper part 2j starts inflating and deploying toward the occupant. At this time, the upper roll is not subjected to any restraint compared to the lower roll part 2j restrained between the upper roll part 2k and the inflator 5. As shown in FIG. 11, the shape portion 2k is first deployed so as to swing the head upward.

その後下ロール状部2jが下方へ向って首を振るように展開されて、図12に示すようにエアバッグ2の上部乗員拘束部2gが乗員の頭部付近に当接し、下部乗員拘束部2hが乗員の胸部から腹部に当接して拘束し、衝突時の衝撃から乗員を保護する。   Thereafter, the lower roll-shaped portion 2j is deployed so as to swing its head downward, and as shown in FIG. 12, the upper occupant restraint portion 2g of the airbag 2 comes into contact with the vicinity of the head of the occupant, and the lower occupant restraint portion 2h. The abutment comes into contact with the abdomen from the chest of the occupant and restrains the occupant from the impact during the collision.

以上のように、折り畳まれたエアバッグ2が展開される際、上部乗員拘束部2gと下部乗員拘束部2hのほぼ中間に位置する分岐部2fを境にして、上ロール状部2kが上方へ展開され、下ロール状部2jが下方へ展開されながら、図12に示すように、上下部乗員拘束部2g,2hと分岐部2fがほぼ同一平面となった状態でエアバッグ2の展開方向(乗員方向)Yに向かって、最終的には図13に示すように、乗員を拘束するようになる。   As described above, when the folded airbag 2 is deployed, the upper roll-shaped portion 2k is moved upward with the branch portion 2f positioned substantially in the middle between the upper occupant restraint portion 2g and the lower occupant restraint portion 2h. As shown in FIG. 12, while the lower roll-shaped portion 2j is deployed downward, the deployment direction of the airbag 2 with the upper and lower occupant restraint portions 2g, 2h and the branching portion 2f substantially in the same plane ( In the direction of the occupant (Y), the occupant is finally restrained as shown in FIG.

またロール状に巻かれた状態の上ロール状部2kが巻き方向と逆の方向へ解き放されながら上方へ首を振るように展開されるため、図10に示すように助手席に着座していた子供等の小柄の乗員がインストルメントパネル7の直前に立ち上がった状態のときにエアバッグ2が展開された場合でも、エアバッグ2の上部乗員拘束部2gが乗員の頸部や顎に直接入り込むことがない。   Further, since the upper roll-shaped portion 2k wound in a roll shape is unrolled in the direction opposite to the winding direction and is unfolded so as to swing the head upward, it was seated in the passenger seat as shown in FIG. Even when a small passenger such as a child stands up just before the instrument panel 7, the upper occupant restraint 2g of the airbag 2 directly enters the occupant's neck and chin. There is no.

またエアバッグ2を折畳む際、上部乗員拘束部2gがロール状に折畳まれて上ロール状部2kとなっていることから、エアバッグ2は乗員の頭部側へ平坦形状を形成しながら展開することになって、乗員にとって好ましい展開とすることができる。   When the airbag 2 is folded, the upper occupant restraint portion 2g is folded into a roll shape to form an upper roll portion 2k, so that the airbag 2 forms a flat shape on the occupant's head side. It can be set as a favorable development for the occupant.

さらに下ロール状部2jも巻き方向と逆の方向へ解き放されながら下方へ首を振るように展開されて、下部乗員拘束部2hが乗員の胸部や腹部を拘束するため、従来の上向きにのみ展開されるエアバッグに比べて、乗員の腹部も確実に拘束できるようになる。   Furthermore, the lower roll-shaped part 2j is also unfolded in the direction opposite to the winding direction and is deployed so as to swing the head downward, and the lower occupant restraint part 2h restrains the occupant's chest and abdomen, so it is deployed only upwards in the past. The abdomen of the occupant can be reliably restrained as compared with the airbag that is used.

なお前記実施の形態では、エアバッグ2を折り畳む際、はじめに乗員拘束面2mの両側を蛇腹状に折り畳んだが、第1変形例として、図14(a)で示すように、乗員拘束面2mの両側部をロール状に折り畳んだ上に、乗員拘束面2mを被せるようにしてもよく、図14(b)や図14(c)に示すように、乗員拘束面2mの両側がエアバッグ2内に入り込まないように蛇腹状に折り畳んでもよいと共に、図14(d)に示すように乗員拘束面2mの両側を、乗員拘束面2mも含めてロール状に折り畳んでもよい。   In the above embodiment, when the airbag 2 is folded, both sides of the occupant restraint surface 2m are first folded in a bellows shape. However, as shown in FIG. 14 (a), both sides of the occupant restraint surface 2m are folded. The part may be folded into a roll shape and covered with an occupant restraint surface 2m. As shown in FIGS. 14 (b) and 14 (c), both sides of the occupant restraint surface 2m are within the airbag 2. As shown in FIG. 14 (d), both sides of the passenger restraint surface 2m may be folded into a roll shape including the passenger restraint surface 2m.

また第2変形例として図15(a)および(b)に示すように、エアバッグ2を折畳む際、分岐部2fを境に、分岐部2fによって上部乗員拘束部2g及び下部乗員拘束部2hに区分けされる乗員拘束面2mと、インフレータ5からの高圧ガスを分岐部3f側へ供給するマウス部2iとを予め略T字状に交叉形成するようにしており、この場合、分岐部2fは、図15(a)に示すように上下ロール状部2g、2hの協会のほぼ中央部に位置したり、図15(b)に示すように、乗員側に寄った位置にくるようにしてもよい。   As a second modification, as shown in FIGS. 15A and 15B, when the airbag 2 is folded, the upper occupant restraint portion 2g and the lower occupant restraint portion 2h are separated by the branch portion 2f at the branch portion 2f. An occupant restraint surface 2m that is divided into two parts and a mouse part 2i that supplies high-pressure gas from the inflator 5 to the branch part 3f side are previously crossed in a substantially T shape. In this case, the branch part 2f As shown in FIG. 15 (a), the upper and lower roll-shaped portions 2g and 2h may be located at substantially the center of the association, or as shown in FIG. Good.

かかる構成により、マウス部2iを経て分岐部2fに達した高圧ガスを、分岐部2fにより効率よくエアバッグ2の上下方向へと振り分けるように適宜選択することができ、エアバッグ2の設置位置や設置部の形状等に適応して、理想的な乗員保護ができるように、上部乗員拘束部2gを上方へ、また下部乗員拘束部2hを下方に瞬時に展開させることができる。   With this configuration, the high pressure gas that has reached the branching portion 2f via the mouse portion 2i can be appropriately selected so as to be efficiently distributed in the vertical direction of the airbag 2 by the branching portion 2f. The upper occupant restraint portion 2g can be instantaneously deployed upward and the lower occupant restraint portion 2h can be instantaneously deployed downward so that ideal occupant protection can be achieved according to the shape of the installation portion.

なお前記実施の形態では、助手席用エアバッグ装置について説明したが、助手席以外のエアバッグ装置にも適用できるものである。   In the above embodiment, the airbag device for the passenger seat has been described. However, the present invention can also be applied to an airbag device other than the passenger seat.

本発明のエアバッグ装置は、折り畳まれたエアバッグが展開される際、上部折り畳み体と下部折り畳み体のほぼ中間に位置する分岐部を境にして、上部折り畳み体が上方へ首を振るように展開され、また下部折り畳み体が下方へ首を振るように展開されながら、最終的には上下部折り畳み体と分岐部がほぼ同一平面となった状態で乗員を捕捉するため、衝突時の衝撃から乗員を確実に保護することができると共に、上部折り畳み体が上方へ首を振るように展開されることにより、座席に着座していた子供等の小柄な乗員がインストルメントパネルの直前に立ち上がった状態のときにエアバッグが展開された場合でも、エアバッグの上部折り畳み体が乗員の頸部や顎に直接入り込むことがないため、車両用のエアバッグ装置、特に助手席に着座した乗員を保護するエアバッグ装置等に最適である。   When the folded airbag is deployed, the airbag device according to the present invention is configured so that the upper folded body swings its head upward at the branch portion located approximately in the middle between the upper folded body and the lower folded body. In order to capture the occupant in the state where the upper and lower folded bodies and the bifurcation are almost flush with each other while the lower folded body is unfolded and the lower folded body is swung downward, A state where a small passenger such as a child seated on the seat stands up just before the instrument panel by deploying the upper folding body so that the head can be swung upward while protecting the passenger reliably. Even if the airbag is deployed, the upper folded body of the airbag does not directly enter the occupant's neck or chin. And is optimal for an air bag device and the like to protect the occupant.

本発明の実施の形態になるエアバッグ装置をインストルパネル内に設置した状態の断面図である。It is sectional drawing of the state which installed the airbag apparatus which becomes embodiment of this invention in the instrument panel. 本発明の実施の形態になるエアバッグ装置を構成するエアバッグモジュールの断面図である。It is sectional drawing of the airbag module which comprises the airbag apparatus which becomes embodiment of this invention. 本発明の実施の形態になるエアバッグ装置に設けられたエアバッグの展開状態の斜視図である。It is a perspective view of the deployment state of the airbag provided in the airbag apparatus which becomes embodiment of this invention. 本発明の実施の形態になるエアバッグ装置に設けられたエアバッグを折り畳んだ状態の斜視図である。It is a perspective view of the state which folded the airbag provided in the airbag apparatus which becomes embodiment of this invention. 図4のA−A線に沿う断面図である。It is sectional drawing which follows the AA line of FIG. 本発明の実施の形態になるエアバッグ装置に設けられたエアバッグの折り畳み手順を示す説明図である。It is explanatory drawing which shows the folding procedure of the airbag provided in the airbag apparatus which becomes embodiment of this invention. 本発明の実施の形態になるエアバッグ装置に設けられたエアバッグの折り畳み手順を示す説明図である。It is explanatory drawing which shows the folding procedure of the airbag provided in the airbag apparatus which becomes embodiment of this invention. 本発明の実施の形態になるエアバッグ装置に設けられたエアバッグの折り畳み手順を示す説明図である。It is explanatory drawing which shows the folding procedure of the airbag provided in the airbag apparatus which becomes embodiment of this invention. 本発明の実施の形態になるエアバッグ装置に設けられたエアバッグの折り畳み手順を示す説明図である。It is explanatory drawing which shows the folding procedure of the airbag provided in the airbag apparatus which becomes embodiment of this invention. 本発明の実施の形態になるエアバッグ装置のエアバッグ展開時の作用説明図である。It is operation | movement explanatory drawing at the time of airbag deployment of the airbag apparatus which becomes embodiment of this invention. 本発明の実施の形態になるエアバッグ装置のエアバッグ展開時の作用説明図である。It is operation | movement explanatory drawing at the time of airbag deployment of the airbag apparatus which becomes embodiment of this invention. 本発明の実施の形態になるエアバッグ装置のエアバッグ展開時の作用説明図である。It is operation | movement explanatory drawing at the time of airbag deployment of the airbag apparatus which becomes embodiment of this invention. 本発明の実施の形態になるエアバッグ装置のエアバッグ展開時の作用説明図である。It is operation | movement explanatory drawing at the time of airbag deployment of the airbag apparatus which becomes embodiment of this invention. 本発明の実施の形態になるエアバッグ装置のエアバッグ折り畳み方法の第1変形例を示す説明図である。It is explanatory drawing which shows the 1st modification of the airbag folding method of the airbag apparatus which becomes embodiment of this invention. 本発明の実施の形態になるエアバッグ装置のエアバッグ折り畳み方法の第2変形例を示す説明図である。It is explanatory drawing which shows the 2nd modification of the airbag folding method of the airbag apparatus which becomes embodiment of this invention.

符号の説明Explanation of symbols

1 エアバッグモジュール
2 エアバッグ
2a 基布パネル
2b 基布パネル
2e 乗員拘束部
2f 分岐部
2g 上部乗員拘束部
2h 下部乗員拘束部
2i マウス部
2j 下ロール状部(下部折り畳み体)
2k 上ロール状部(上部折り畳み体)
2m 乗員拘束面
3 ケース
5 インフレータ
DESCRIPTION OF SYMBOLS 1 Airbag module 2 Airbag 2a Base fabric panel 2b Base fabric panel 2e Occupant restraint part 2f Branch part 2g Upper occupant restraint part 2h Lower occupant restraint part 2i Mouse part 2j Lower roll-shaped part (lower folding body)
2k upper roll (upper folding body)
2m Crew restraint surface 3 Case 5 Inflator

Claims (2)

折り畳まれケース内に収容されたエアバッグを、自動車が衝突した際インフレータより噴出される高圧ガスにより乗員側へ膨張展開させて、衝突時の衝撃から乗員を保護するエアバッグ装置であって、前記エアバッグは、
前記インフレータが装着された基端側に連なるマウス部を前記エアバッグの反展開方向に配置すると共に、前記マウス部に連なる分岐部を間にして上部折り畳み体と下部折畳み体とを連ね、
前記ケース内に、前記分岐部の下方に前記下部折り畳み体を位置させ、前記分岐部の上方に前記上部折り畳み体を位置させて、収納されることを特徴とするエアバッグ装置。
An airbag device that is folded and accommodated in a case, inflated and deployed to the occupant side by a high-pressure gas ejected from an inflator when the automobile collides, and protects the occupant from impact during the collision, Airbag
The mouse part connected to the base end side on which the inflator is attached is arranged in the anti-deployment direction of the airbag, and the upper folded body and the lower folded body are connected with the branch part connected to the mouse part in between,
The airbag device is housed in the case, wherein the lower folded body is positioned below the branch portion and the upper folded body is positioned above the branch portion.
前記エアバッグは、前記上部折り畳み体がロール状に折畳まれていることを特徴とする請求項1に記載のエアバッグ装置。 The airbag apparatus according to claim 1, wherein the upper folded body is folded in a roll shape.
JP2005159596A 2005-05-31 2005-05-31 Airbag device Pending JP2006335130A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005159596A JP2006335130A (en) 2005-05-31 2005-05-31 Airbag device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005159596A JP2006335130A (en) 2005-05-31 2005-05-31 Airbag device

Publications (1)

Publication Number Publication Date
JP2006335130A true JP2006335130A (en) 2006-12-14

Family

ID=37556050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005159596A Pending JP2006335130A (en) 2005-05-31 2005-05-31 Airbag device

Country Status (1)

Country Link
JP (1) JP2006335130A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008221979A (en) * 2007-03-12 2008-09-25 Nippon Plast Co Ltd Folding method of air bag for front passenger seat occupant, air bag for front passenger seat occupant, and air bag device for front passenger seat occupant
JP2009143545A (en) * 2007-10-03 2009-07-02 Trw Vehicle Safety Syst Inc Air bag with deployment flap
JP2014196062A (en) * 2013-03-29 2014-10-16 豊田合成株式会社 Air bag device for assistant driver's seat
JP2019111907A (en) * 2017-12-22 2019-07-11 芦森工業株式会社 Airbag device for front passenger seat

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008221979A (en) * 2007-03-12 2008-09-25 Nippon Plast Co Ltd Folding method of air bag for front passenger seat occupant, air bag for front passenger seat occupant, and air bag device for front passenger seat occupant
JP2009143545A (en) * 2007-10-03 2009-07-02 Trw Vehicle Safety Syst Inc Air bag with deployment flap
JP2014196062A (en) * 2013-03-29 2014-10-16 豊田合成株式会社 Air bag device for assistant driver's seat
JP2019111907A (en) * 2017-12-22 2019-07-11 芦森工業株式会社 Airbag device for front passenger seat
JP7013230B2 (en) 2017-12-22 2022-02-15 芦森工業株式会社 Passenger seat airbag device

Similar Documents

Publication Publication Date Title
US7549671B2 (en) Knee-protecting airbag apparatus
JP4848141B2 (en) Airbag device
JP4270794B2 (en) Crew protection device
US20170158160A1 (en) Airbag and airbag apparatus
JP7243552B2 (en) Far side airbag device
WO2007083423A1 (en) Seat device
WO2016067796A1 (en) Curtain air-bag device
WO2018105335A1 (en) Side air bag device
JP4836494B2 (en) Airbag device
JP3107072B2 (en) Head protection airbag device
JP4841399B2 (en) Air bag and air bag folding method
JP2020037382A (en) Air bag device
JP6450833B2 (en) Airbag device
JP2006335130A (en) Airbag device
JP4909556B2 (en) Airbag
JP2007216821A (en) Side airbag
JP2007038812A (en) Air bag device for passenger seat
US7059630B2 (en) Head side airbag cushion fold
JP6499096B2 (en) Crew protection device
JPH07277125A (en) Air bag device
JP4764637B2 (en) Airbag device
JP2019018651A (en) Air bag device for rear seat
JP2007261441A (en) Airbag device
JP5455732B2 (en) Side airbag device
JP2007137150A (en) Knee air bag device for vehicle