WO2012090637A1 - Curtain airbag device - Google Patents

Curtain airbag device Download PDF

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Publication number
WO2012090637A1
WO2012090637A1 PCT/JP2011/077633 JP2011077633W WO2012090637A1 WO 2012090637 A1 WO2012090637 A1 WO 2012090637A1 JP 2011077633 W JP2011077633 W JP 2011077633W WO 2012090637 A1 WO2012090637 A1 WO 2012090637A1
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WO
WIPO (PCT)
Prior art keywords
airbag
strap
curtain
shape
pillar
Prior art date
Application number
PCT/JP2011/077633
Other languages
French (fr)
Japanese (ja)
Inventor
佑樹 中村
中島　豊
Original Assignee
オートリブ ディベロップメント エービー
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Application filed by オートリブ ディベロップメント エービー filed Critical オートリブ ディベロップメント エービー
Priority to JP2012550786A priority Critical patent/JP5651711B2/en
Publication of WO2012090637A1 publication Critical patent/WO2012090637A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/237—Inflatable members characterised by the way they are folded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/232—Curtain-type airbags deploying mainly in a vertical direction from their top edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B60R2021/23386—External tether means

Definitions

  • the present invention relates to a so-called curtain airbag device that protects an occupant by deploying between a vehicle body side wall and an occupant when an air bag attached to a side of a vehicle interior collides with the vehicle.
  • the airbag device is arranged inside a driver airbag device housed inside the steering wheel, a curtain airbag device arranged along the upper edge of the window frame, or an instrument panel (instrument panel).
  • a driver airbag device housed inside the steering wheel
  • a curtain airbag device arranged along the upper edge of the window frame
  • an instrument panel instrument panel
  • a curtain airbag device includes a gas generator that generates inflation gas; and an airbag (cushion) that is folded in a long shape in a accommodated state and is deployed by gas supplied from the gas generator.
  • a problem with curtain airbags is that the A-pillar is thickened by the amount of air bag compressed and molded into a rod shape. Further, since the A pillar is provided with a garnish made of hard plastic, there is a problem that the airbag provided in the A pillar is difficult to deploy in the vehicle compartment as compared with the roof portion.
  • the present invention has been made in view of the above-described problems, and an object thereof is to provide a curtain airbag device in which a pillar can be designed to be thin without impairing the original function of the curtain airbag, ie, occupant protection.
  • a curtain airbag device includes an airbag that can be inflated and deployed; and a strap that connects the airbag and the vehicle body.
  • the airbag when the airbag is compressed into a rod shape, the front end portion is folded into a Z shape from a planarly expanded state, and then compressed in a roll shape or a zigzag shape upward from the lower end portion.
  • One end of the strap is connected to the rear of the frontmost fold of the Z-shaped folded portion on the outer side of the airbag in the lateral direction of the vehicle. Thereafter, the compressed airbag is not deployed in the A-pillar portion.
  • a curtain airbag device includes an airbag that can be inflated and deployed; and a strap that connects the airbag and the vehicle body.
  • the airbag when the airbag is compressed into a rod shape, the front end portion is folded into a Z shape from a planarly expanded state, and then compressed in a roll shape or a zigzag shape upward from the lower end portion.
  • One end of the strap is connected to the rear of the frontmost fold of the Z-shaped folded portion on the outer side of the airbag in the lateral direction of the vehicle. Thereafter, the compressed airbag is not deployed in the rear pillar portion.
  • front and rear indicate the front side and the rear side in principle with respect to the traveling direction of the vehicle.
  • upper and lower indicate an upper side and a lower side in a substantially vertical direction.
  • the “zigzag shape” indicates a shape in which the cross section is zigzag by alternately folding from the bottom or the top in the short direction of the airbag, and may be a bellows shape. Here, when folding from below, it feels “folded up”, and when folded from above, it feels “tuck up”.
  • the roll of the airbag when an abnormal situation such as a side collision occurs, the roll of the airbag is first unwound and starts to be deployed downward along the window.
  • the letter-shaped folded part will unfold.
  • the said pillar part since it is set as the structure which does not arrange
  • folding the front end of the airbag can cause an intentional delay in deployment, which has the advantage of increasing the degree of freedom in designing the chamber including the delay chamber.
  • the connecting end portion of the strap is between the airbag and the window, that is, the outside of the airbag in the vehicle side direction, the airbag is compared with the case where the connecting end portion is the inside of the airbag compartment. Becomes easier to expand toward the occupant side, and the occupant can be restrained quickly.
  • FIG. 1 is a plan view showing the structure of a curtain airbag device according to the present invention, showing a deployed state.
  • FIGS. 2A to 2C are schematic explanatory views showing a compression process of the airbag used in the curtain airbag device according to the present invention.
  • 3 (A) and 3 (B) are schematic explanatory views showing a compression process of an airbag used in the curtain airbag device according to the present invention.
  • FIG. 4 is a schematic explanatory view showing an attached state of the curtain airbag device according to the present invention.
  • FIG. 5 is a schematic explanatory view showing an attached state of the curtain airbag device according to the present invention.
  • FIG. 1 is a plan view showing 10 structures of a curtain airbag device according to the present invention, showing a deployed state.
  • the airbag device 10 In the non-actuated state, the airbag device 10 is folded in a long shape and is housed in a state covered with a head lining (not shown) disposed on the upper edge of the vehicle window.
  • crew in a vehicle is protected by inflate-deploying downward from the clearance gap between a headlining and an inner panel (not shown) at the time of an action
  • the curtain airbag device 10 includes an airbag 20 that can be inflated and deployed; and a front strap 32 that connects the airbag 20 and the vehicle body.
  • the airbag 20 and the strap 32 can be formed of the same fabric (material).
  • the airbag 20 has a structure that is not provided in the A-pillar portion 50 (FIG. 4).
  • the airbag 20 includes a gas introduction part 22 connected to the inflator 14, a duct part 24 connected to the gas introduction part 22, a main chamber 26 occupying most of the area of the airbag 20, and a front end in the vehicle traveling direction. And a provided delay chamber 28.
  • the delay chamber 28 is literally a chamber designed to expand with a delay from the main chamber 26.
  • a plurality of sheets for example, two or three sheets
  • the rear end 34 of the strap 32 is connected to the vicinity of the lower end portion of the airbag 20, and the front end is fixed to the A pillar 50.
  • the position of the one end 34 of the front strap 32 (rear connecting portion 34) is behind the delay chamber 28 and is below the middle of the airbag 20 in the height direction.
  • the connecting portion 34 of the strap 32 is between the airbag 20 and the window, that is, outside of the airbag 20 in the vehicle side surface direction.
  • FIG. 2A an airbag 20 to which a strap 32 is connected is prepared.
  • FIG. 2B the front end portion of the airbag 20 is folded rearward.
  • the crease 36 is provided in front of the connection portion 34 of the strap 32.
  • the folded portion is defined as a region 20a.
  • the airbag 20 is folded back toward the front so as to form a Z-shape from the crease 38 near the center of the front end portion of the folded airbag 20.
  • the folded portion is defined as a region 20b.
  • the airbag 20 is rolled up from the lower end of the airbag 20 upward.
  • the airbag 20 is compressed into a rod shape.
  • the airbag 20 can be folded into a zigzag shape and compressed into a rod shape instead of being rolled up.
  • the front end of the strap 32 is connected to the A pillar 50, and a tab provided at the upper end of the airbag 20 is attached to the upper portion of the window frame. Link. Thereafter, the A pillar is provided with a garnish.
  • the unfolded state is indicated by a broken line.
  • a sensor provided in the vehicle catches the abnormal vibration and sends an ignition signal to the inflator 14 based on the signal.
  • a propellant (not shown) that drives the inflator 14 in response to the ignition signal from the sensor is provided inside the inflator 14.
  • the inflation gas flows into the duct 24 of the airbag 20 through the gas introduction part 22.
  • the gas that has passed through the duct 24 is first supplied to the main chamber 26. Thereby, the roll of the airbag 20 is first unwound and starts to be deployed downward along the window, and then the Z-shaped folded portion on the front end side is deployed.
  • the airbag 20 is not provided in the A pillar 50, the A pillar 50 can be thinned, and there is an effect that visibility in the vehicle is improved. At this time, since the front end portion of the folded airbag 20 is deployed, it is possible to sufficiently protect the occupant even in the vicinity of the front of the vehicle.
  • a structure in which the front end of the airbag 20 is arranged only in a part of the upper part of the A pillar may be adopted.
  • folding the front end portion of the airbag 20 can cause an intentional deployment delay, and there is an advantage that the degree of freedom in designing the chamber including the delay chamber 28 is increased.
  • the connecting portion 34 of the strap 32 is between the airbag 20 and the window, that is, outside of the airbag 20 in the vehicle side surface direction, the connecting end portion 34 is connected to the inside of the compartment of the airbag 20. Compared with the case where it does, it becomes easy to expand
  • the front end portion of the airbag 20 is folded twice in a Z shape, but can be completed by a single folding as shown in FIG.
  • the front end portion of the airbag 20 can be greatly expanded toward the occupant side when deployed compared to the case of one turn, and the occupant can be injured. Can be reduced.
  • the front end 44 of the strap 42 is connected to the vicinity of the lower end of the airbag 20, and the rear end is fixed to the C pillar 60.
  • the position of the one end 44 of the strap 42 (the front connecting portion 44) is below the middle in the height direction of the airbag 20.
  • the connecting portion 44 of the strap 42 is between the airbag 20 and the window, that is, outside of the airbag 20 in the vehicle side direction.
  • the rear end of the strap 42 is connected to the C pillar 60, and the tab provided on the upper end of the airbag 20 is connected to the upper part of the window frame. Thereafter, the C pillar 60 is provided with a garnish.
  • the unfolded state is indicated by a broken line.
  • the pillar (C pillar) can be designed to be thin and the rear visibility can be improved, and the rear window area can be increased, as in the case of the example of FIG. There is an advantage that the degree of freedom increases.
  • the “rear pillar” does not necessarily indicate the last pillar of the vehicle.
  • the pillar on the rear side of the area where the protection area as the curtain airbag exists can be a “rear pillar” referred to here.

Abstract

Provided is a curtain airbag device which enables an A-pillar or a rear pillar to be designed to be narrow without compromising the primary function of the curtain airbag, which is to protect the occupant. The present curtain airbag device is provided with an airbag which can be inflated and expanded and a strap which connects the airbag and the vehicle body. When compressing the airbag into a bar-like shape, the front end of the airbag is folded into a Z-shape from a state in which the airbag is spread flat, and then the airbag is compressed upward from the lower end thereof into a roll shape or a zigzag shape. After that, one end of the strap is connected to the position of the airbag which is on the outer side of the airbag in the direction toward the side surface of the vehicle and which is behind the front-most fold line of the Z-shaped folded portion. The curtain airbag device is characterized in that, after the abovementioned processes, the compressed airbag is not disposed at the A-pillar or the rear pillar portion.

Description

カーテンエアバッグ装置Curtain airbag device
　本発明は、車室内側部に取り付けられたエアバッグが車両衝突時に、車体側壁と乗員の間に展開して乗員を保護する所謂カーテンエアバッグ装置に関する。 The present invention relates to a so-called curtain airbag device that protects an occupant by deploying between a vehicle body side wall and an occupant when an air bag attached to a side of a vehicle interior collides with the vehicle.
　エアバッグ装置には、ステアリングホイール内部に収容される運転席用エアバッグ装置や、窓枠の上縁部に沿って配置されるカーテンエアバッグ装置や、インストルメントパネル（インパネ）の内部に配置される助手席用エアバッグ装置等、種々のタイプがある。 The airbag device is arranged inside a driver airbag device housed inside the steering wheel, a curtain airbag device arranged along the upper edge of the window frame, or an instrument panel (instrument panel). There are various types such as an airbag device for a passenger seat.
　一般にカーテンエアバッグ装置は、膨張ガスを発生するガス発生器と；収容状態において長尺状に折り畳まれ、ガス発生器から供給されるガスによって展開するエアバッグ（クッション）とを備えている。 Generally, a curtain airbag device includes a gas generator that generates inflation gas; and an airbag (cushion) that is folded in a long shape in a accommodated state and is deployed by gas supplied from the gas generator.
　カーテンエアバッグの問題として、圧縮して棒状に成形されたエアバッグをＡピラー部分に配備する分だけＡピラーが太くなることが挙げられる。また、Ａピラーには硬質プラスチック製のガーニッシュが設けられているため、Ａピラーに配備されたエアバッグはルーフ部分に比べて車室内に展開し難くなるという問題があった。 A problem with curtain airbags is that the A-pillar is thickened by the amount of air bag compressed and molded into a rod shape. Further, since the A pillar is provided with a garnish made of hard plastic, there is a problem that the airbag provided in the A pillar is difficult to deploy in the vehicle compartment as compared with the roof portion.
　これに対して、エアバッグの設置位置を後方にずらすこと等によってＡピラーにエアバッグを配備しない構造を採用することが考えられる。しかしながら、Ａピラー付近にもエアバッグを配備しないと、車両の前方付近における乗員の保護が不十分になるという、エアバッグとしての基本的な機能を阻害することになる。 In contrast, it is conceivable to adopt a structure in which the airbag is not provided to the A pillar by shifting the installation position of the airbag backward. However, if an airbag is not provided in the vicinity of the A pillar, the basic function as an airbag, which is insufficient for protecting passengers near the front of the vehicle, is hindered.
　本発明は上記のような問題点に鑑みてなされたものであり、乗員保護というカーテンエアバッグ本来の機能を損なうことなく、ピラーを細く設計可能なカーテンエアバッグ装置を提供することにある。 The present invention has been made in view of the above-described problems, and an object thereof is to provide a curtain airbag device in which a pillar can be designed to be thin without impairing the original function of the curtain airbag, ie, occupant protection.
　上記課題を解決するために、本発明の第１の態様に係るカーテンエアバッグ装置は、膨張展開可能なエアバッグと；前記エアバッグと車体とを連結するストラップとを備える。ここで、前記エアバッグは、棒状に圧縮するに際して、平面的に広げた状態から前端部をＺ状に折り畳み、その後、下端部から上方に向かってロール状又はジグザグ状に圧縮する。そして、前記ストラップの一端が、前記エアバッグの車両側面方向の外側において前記Ｚ状の折り畳み部分の最も前方の折り目よりも後方に連結される。その後、圧縮された前記エアバッグは、Ａピラー部分には配備されないことを特徴とする。 In order to solve the above problems, a curtain airbag device according to a first aspect of the present invention includes an airbag that can be inflated and deployed; and a strap that connects the airbag and the vehicle body. Here, when the airbag is compressed into a rod shape, the front end portion is folded into a Z shape from a planarly expanded state, and then compressed in a roll shape or a zigzag shape upward from the lower end portion. One end of the strap is connected to the rear of the frontmost fold of the Z-shaped folded portion on the outer side of the airbag in the lateral direction of the vehicle. Thereafter, the compressed airbag is not deployed in the A-pillar portion.
　本発明の第２の態様に係るカーテンエアバッグ装置は、膨張展開可能なエアバッグと；前記エアバッグと車体とを連結するストラップとを備える。ここで、前記エアバッグは、棒状に圧縮するに際して、平面的に広げた状態から前端部をＺ状に折り畳み、その後、下端部から上方に向かってロール状又はジグザグ状に圧縮する。そして、前記ストラップの一端が、前記エアバッグの車両側面方向の外側において前記Ｚ状の折り畳み部分の最も前方の折り目よりも後方に連結される。その後、圧縮された前記エアバッグは、後方ピラー部分には配備されないことを特徴とする。 A curtain airbag device according to a second aspect of the present invention includes an airbag that can be inflated and deployed; and a strap that connects the airbag and the vehicle body. Here, when the airbag is compressed into a rod shape, the front end portion is folded into a Z shape from a planarly expanded state, and then compressed in a roll shape or a zigzag shape upward from the lower end portion. One end of the strap is connected to the rear of the frontmost fold of the Z-shaped folded portion on the outer side of the airbag in the lateral direction of the vehicle. Thereafter, the compressed airbag is not deployed in the rear pillar portion.
　なお、明細書及び特許請求の範囲において、「前方」及び「後方」とは、原則として車両の進行方向に対して前側及び後側を示すものとする。また、「上方」及び「下方」とは、概ね垂直方向の上側及び下側を示すものとする。 In the specification and claims, the terms “front” and “rear” indicate the front side and the rear side in principle with respect to the traveling direction of the vehicle. In addition, “upper” and “lower” indicate an upper side and a lower side in a substantially vertical direction.
　また、「ジグザグ状」とは、エアバッグの短手方向に下から又は上から交互に折り畳んで、断面がジグザグとなる形状を示し、蛇腹状という場合もある。ここで、下から折り畳む場合には「折り上げる」感じとなり、上から折り畳む場合には、「たくし上げる」感じとなる。 In addition, the “zigzag shape” indicates a shape in which the cross section is zigzag by alternately folding from the bottom or the top in the short direction of the airbag, and may be a bellows shape. Here, when folding from below, it feels “folded up”, and when folded from above, it feels “tuck up”.
　上記のような構成の本発明によれば、側面衝突などの異常事態が発生すると、最初にエアバッグのロールが解かれて窓に沿って下方に展開を開始し、その後、前端部側のＺ字状の折り畳み部分が展開することになる。ここで、少なくとも１つのピラー部分にエアバッグを配備しない構造としているため、当該ピラー部分を細くすることができ、視認性が向上する等の効果がある。また、折り畳まれたエアバッグの前端部が展開することにより、当該ピラー付近にもエアバッグが広がり、ピラー部分においても乗員を十分に保護することが可能となる。 According to the present invention configured as described above, when an abnormal situation such as a side collision occurs, the roll of the airbag is first unwound and starts to be deployed downward along the window. The letter-shaped folded part will unfold. Here, since it is set as the structure which does not arrange | position an airbag to at least 1 pillar part, the said pillar part can be made thin and there exists an effect of visibility improving. Further, when the front end portion of the folded airbag is deployed, the airbag spreads in the vicinity of the pillar, and the passenger can be sufficiently protected even in the pillar portion.
　さらに、エアバッグの前端部の折り畳みにより、意図的な展開遅れを発生させることができ、ディレイチャンバーを含めたチャンバーの設計自由度が増すというメリットもある。 In addition, folding the front end of the airbag can cause an intentional delay in deployment, which has the advantage of increasing the degree of freedom in designing the chamber including the delay chamber.
　また、ストラップの連結端部をエアバッグと窓との間、すなわち、エアバッグの車両側面方向の外側としているため、連結端部をエアバッグの車室の内側とする場合に比べて、エアバッグが乗員側に向かって展開しやすくなり、乗員を速やかに拘束することが可能となる。
  Further, since the connecting end portion of the strap is between the airbag and the window, that is, the outside of the airbag in the vehicle side direction, the airbag is compared with the case where the connecting end portion is the inside of the airbag compartment. Becomes easier to expand toward the occupant side, and the occupant can be restrained quickly.
図１は、本発明に係るカーテンエアバッグ装置の構造を示す平面図であり、展開状態を示す。FIG. 1 is a plan view showing the structure of a curtain airbag device according to the present invention, showing a deployed state. 図２（Ａ）－（Ｃ）は、本発明に係るカーテンエアバッグ装置に使用されるエアバッグの圧縮工程を示す概略説明図である。FIGS. 2A to 2C are schematic explanatory views showing a compression process of the airbag used in the curtain airbag device according to the present invention. 図３（Ａ）、（Ｂ）は、本発明に係るカーテンエアバッグ装置に使用されるエアバッグの圧縮工程を示す概略説明図である。3 (A) and 3 (B) are schematic explanatory views showing a compression process of an airbag used in the curtain airbag device according to the present invention. 図４は、本発明に係るカーテンエアバッグ装置の取り付け状態を示す概略説明図である。FIG. 4 is a schematic explanatory view showing an attached state of the curtain airbag device according to the present invention. 図５は、本発明に係るカーテンエアバッグ装置の取り付け状態を示す概略説明図である。FIG. 5 is a schematic explanatory view showing an attached state of the curtain airbag device according to the present invention.
　以下、図１～図４を参照して、本発明の実施の形態について説明する。図１は、本発明に係るカーテンエアバッグ装置の１０構造を示す平面図であり、展開状態を示す。エアバッグ装置１０は、非作動状態においては、長尺状に畳まれ、車両の窓上縁に配置されたヘッドライニング（図示せず）に覆われた状態で収容される。そして、作動時にヘッドライニングとインナーパネル（図示せず）との隙間から下方に向かって膨張展開することで車両内の乗員を保護するようになっている。 Hereinafter, embodiments of the present invention will be described with reference to FIGS. FIG. 1 is a plan view showing 10 structures of a curtain airbag device according to the present invention, showing a deployed state. In the non-actuated state, the airbag device 10 is folded in a long shape and is housed in a state covered with a head lining (not shown) disposed on the upper edge of the vehicle window. And the passenger | crew in a vehicle is protected by inflate-deploying downward from the clearance gap between a headlining and an inner panel (not shown) at the time of an action | operation.
　本発明の実施例に係るカーテンエアバッグ装置１０は、膨張展開可能なエアバッグ２０と；エアバッグ２０と車体とを連結する前方のストラップ３２とを備えている。エアバッグ２０とストラップ３２とは同一のファブリック（素材）で成形することができる。なお、エアバッグ２０はＡピラー部分５０（図４）には配備されない構造となっている。 The curtain airbag device 10 according to the embodiment of the present invention includes an airbag 20 that can be inflated and deployed; and a front strap 32 that connects the airbag 20 and the vehicle body. The airbag 20 and the strap 32 can be formed of the same fabric (material). The airbag 20 has a structure that is not provided in the A-pillar portion 50 (FIG. 4).
　エアバッグ２０は、インフレータ１４に連結されたガス導入部２２と、ガス導入部２２と連結されたダクト部２４と、エアバッグ２０の大半の領域を占めるメインチャンバー２６と、車両進行方向の前端に設けられたディレイチャンバー２８とを備えている。ディレイチャンバー２８は、文字通り、メインチャンバー２６から遅れて展開するように設計されたチャンバーである。エアバッグ１２は、複数枚（例えば、２枚又は３枚）のシートを重ね合わせて縫合、接着又は溶着により袋状にしたもの、または、一枚織りで袋部が形成されたものを採用することができる。 The airbag 20 includes a gas introduction part 22 connected to the inflator 14, a duct part 24 connected to the gas introduction part 22, a main chamber 26 occupying most of the area of the airbag 20, and a front end in the vehicle traveling direction. And a provided delay chamber 28. The delay chamber 28 is literally a chamber designed to expand with a delay from the main chamber 26. As the airbag 12, a plurality of sheets (for example, two or three sheets) overlapped and formed into a bag shape by stitching, bonding, or welding, or a bag portion formed by weaving a single sheet is adopted. be able to.
　ストラップ３２の後端３４はエアバッグ２０の下端部付近に連結され、前端はＡピラー５０に固定される。ここで、前方のストラップ３２の一端３４の位置（後方連結部３４）は、ディレイチャンバー２８の後方であり、エアバッグ２０の高さ方向の中間よりも下側となっている。ストラップ３２の連結部３４をエアバッグ２０と窓との間、すなわち、エアバッグ２０の車両側面方向の外側とする。 The rear end 34 of the strap 32 is connected to the vicinity of the lower end portion of the airbag 20, and the front end is fixed to the A pillar 50. Here, the position of the one end 34 of the front strap 32 (rear connecting portion 34) is behind the delay chamber 28 and is below the middle of the airbag 20 in the height direction. The connecting portion 34 of the strap 32 is between the airbag 20 and the window, that is, outside of the airbag 20 in the vehicle side surface direction.
　次に、図２、図３を参照して、本実施例に係るエアバッグ２０の圧縮方法について説明する。なお、図２、図３では、説明の便宜上エアバッグ２０を簡略化して示している。まず、図２（Ａ）に示すように、ストラップ３２が連結されたエアバッグ２０を用意する。次に、図２（Ｂ）に示すように、エアバッグ２０の前端部を後方に向かって折り畳む。このとき、折り目３６はストラップ３２の連結部３４に近接した前方に設ける。折り返された部分を領域２０ａとする。 Next, a method for compressing the airbag 20 according to the present embodiment will be described with reference to FIGS. 2 and 3, the airbag 20 is shown in a simplified manner for convenience of explanation. First, as shown in FIG. 2A, an airbag 20 to which a strap 32 is connected is prepared. Next, as shown in FIG. 2B, the front end portion of the airbag 20 is folded rearward. At this time, the crease 36 is provided in front of the connection portion 34 of the strap 32. The folded portion is defined as a region 20a.
　次に、図２（Ｃ）に示すように、折り返されたエアバッグ２０の前端部の中心付近の折り目３８からＺ字状となるように、前方に向かって折り返す。ここで、折り返された部分を領域２０ｂとする。 Next, as shown in FIG. 2 (C), the airbag 20 is folded back toward the front so as to form a Z-shape from the crease 38 near the center of the front end portion of the folded airbag 20. Here, the folded portion is defined as a region 20b.
　続いて、図３（Ａ）に示すように、エアバッグ２０の下端から上に向かってロール状に巻き上げていく。最終的には図３（Ｂ）のように、エアバッグ２０は棒状に圧縮される。なお、エアバッグ２０はロール状に巻き上げるのに換えて、ジグザグ状に折り上げて棒状に圧縮することもできる。 Subsequently, as shown in FIG. 3A, the airbag 20 is rolled up from the lower end of the airbag 20 upward. Finally, as shown in FIG. 3B, the airbag 20 is compressed into a rod shape. The airbag 20 can be folded into a zigzag shape and compressed into a rod shape instead of being rolled up.
　図４に示すように、圧縮されたエアバッグ２０を車両に搭載する時には、ストラップ３２の前端部をＡピラー５０に連結するとともに、エアバッグ２０の上端に設けられたタブを窓枠の上部に連結する。その後、Ａピラーにはガーニッシュが設けられる。なお、図４において、展開時の状態を破線で示す。 As shown in FIG. 4, when the compressed airbag 20 is mounted on a vehicle, the front end of the strap 32 is connected to the A pillar 50, and a tab provided at the upper end of the airbag 20 is attached to the upper portion of the window frame. Link. Thereafter, the A pillar is provided with a garnish. In FIG. 4, the unfolded state is indicated by a broken line.
　車両走行中に、ロールオーバー、側面衝突、横転等の非常事態が発生すると、車両に備えられたセンサがその異常な振動をキャッチして、その信号を基に発火信号をインフレータ１４に送る。インフレータ１４内部には、センサからの発火信号を受けてインフレータ１４を駆動させるプロペラント（図示せず）が備えられている。インフレータ１４の作動によって、ガス導入部２２を介してエアバッグ２０のダクト２４に膨張ガスが流れ込む。ダクト２４を通過したガスは、先ずメインチャンバー２６に供給される。これにより、最初にエアバッグ２０のロールが解かれて窓に沿って下方に展開を開始し、その後、前端部側のＺ字状の折り畳み部分が展開することになる。 When an emergency such as rollover, side collision, or rollover occurs while the vehicle is running, a sensor provided in the vehicle catches the abnormal vibration and sends an ignition signal to the inflator 14 based on the signal. A propellant (not shown) that drives the inflator 14 in response to the ignition signal from the sensor is provided inside the inflator 14. By the operation of the inflator 14, the inflation gas flows into the duct 24 of the airbag 20 through the gas introduction part 22. The gas that has passed through the duct 24 is first supplied to the main chamber 26. Thereby, the roll of the airbag 20 is first unwound and starts to be deployed downward along the window, and then the Z-shaped folded portion on the front end side is deployed.
　本発明においては、Ａピラー５０にエアバッグ２０を配備しない構造としているため、Ａピラー５０を細くすることができ、車両における視認性が向上する等の効果がある。このとき、折り畳まれたエアバッグ２０の前端部が展開することにより、車両前方付近においても乗員を十分に保護することが可能となる。なお、エアバッグ２０をＡピラーに全く配備しない構造の他、エアバッグ２０の前端をＡピラーの上部の一部分にのみ配備する構造とすることもできる。 In the present invention, since the airbag 20 is not provided in the A pillar 50, the A pillar 50 can be thinned, and there is an effect that visibility in the vehicle is improved. At this time, since the front end portion of the folded airbag 20 is deployed, it is possible to sufficiently protect the occupant even in the vicinity of the front of the vehicle. In addition to the structure in which the airbag 20 is not arranged at all in the A pillar, a structure in which the front end of the airbag 20 is arranged only in a part of the upper part of the A pillar may be adopted.
　本実施例においては、エアバッグ２０の前端部の折り畳みにより、意図的な展開遅れを発生させることができ、ディレイチャンバー２８を含めたチャンバーの設計自由度が増すというメリットもある。 In the present embodiment, folding the front end portion of the airbag 20 can cause an intentional deployment delay, and there is an advantage that the degree of freedom in designing the chamber including the delay chamber 28 is increased.
　本発明においては、ストラップ３２の連結部３４をエアバッグ２０と窓との間、すなわち、エアバッグ２０の車両側面方向の外側としているため、連結端部３４をエアバッグ２０の車室の内側とする場合に比べて、エアバッグ２０が乗員側に向かって展開しやすくなり、乗員を速やかに拘束することが可能となる。 In the present invention, since the connecting portion 34 of the strap 32 is between the airbag 20 and the window, that is, outside of the airbag 20 in the vehicle side surface direction, the connecting end portion 34 is connected to the inside of the compartment of the airbag 20. Compared with the case where it does, it becomes easy to expand | deploy the airbag 20 toward a passenger | crew side, and it becomes possible to restrain a passenger | crew rapidly.
　以上、本発明の実施例について説明したが、本発明は上記実施例に限定されるものではなく、特許請求の範囲に記載された技術的思想を逸脱しない範囲で種々の設計変更等が可能である。例えば、上述した実施例においてはエアバッグ２０の前端部をＺ字状に２回折り畳んでいるが、図２（Ｂ）に示すように１回の折り畳みで完結させることもできる。ただし、エアバッグ２０の前端部の折り畳みを「Ｚ字状」にすることにより、１回折りの場合に比べて、展開時に前端部が大きく乗員側に向かって展開し、乗員に傷害を与える可能性を低減することができる。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes and the like can be made without departing from the technical idea described in the claims. is there. For example, in the above-described embodiment, the front end portion of the airbag 20 is folded twice in a Z shape, but can be completed by a single folding as shown in FIG. However, by folding the front end portion of the airbag 20 into a “Z shape”, the front end portion can be greatly expanded toward the occupant side when deployed compared to the case of one turn, and the occupant can be injured. Can be reduced.
　なお、上記実施例ではＡピラー部分エアバッグを配置しない構造としたが、図５に示すように、Ｃピラー（後方ピラー）にエアバッグを配置しない構造とすることもできる。 In addition, in the said Example, although it was set as the structure which does not arrange | position an A pillar partial airbag, as shown in FIG. 5, it can also be set as the structure which does not arrange | position an airbag to C pillar (rear pillar).
　図５において、ストラップ４２の前端４４はエアバッグ２０の下端部付近に連結され、後端はＣピラー６０に固定される。ここで、ストラップ４２の一端４４の位置（前方連結部４４）は、エアバッグ２０の高さ方向の中間よりも下側となっている。ストラップ４２の連結部４４をエアバッグ２０と窓との間、すなわち、エアバッグ２０の車両側面方向の外側とする。 5, the front end 44 of the strap 42 is connected to the vicinity of the lower end of the airbag 20, and the rear end is fixed to the C pillar 60. Here, the position of the one end 44 of the strap 42 (the front connecting portion 44) is below the middle in the height direction of the airbag 20. The connecting portion 44 of the strap 42 is between the airbag 20 and the window, that is, outside of the airbag 20 in the vehicle side direction.
　圧縮されたエアバッグ２０を車両に搭載する時には、ストラップ４２の後端部をＣピラー６０に連結するとともに、エアバッグ２０の上端に設けられたタブを窓枠の上部に連結する。その後、Ｃピラー６０にはガーニッシュが設けられる。なお、図５において、展開時の状態を破線で示す。 When the compressed airbag 20 is mounted on a vehicle, the rear end of the strap 42 is connected to the C pillar 60, and the tab provided on the upper end of the airbag 20 is connected to the upper part of the window frame. Thereafter, the C pillar 60 is provided with a garnish. In FIG. 5, the unfolded state is indicated by a broken line.
　図５の例の場合も図４の例の場合と同様に、当該ピラー（Ｃピラー）を細く設計でき、後方の視認性が向上する他に、後方の窓面積を広げることができる等の設計自由度が増というメリットがある。なお、「後方ピラー」とは必ずしも車両の最後部のピラーを示すものではない。カーテンエアバッグとしての保護エリアが存在する領域よりも後方側にあるピラーは、ここで言う「後方ピラー」となり得る。 In the case of the example of FIG. 5 as well, the pillar (C pillar) can be designed to be thin and the rear visibility can be improved, and the rear window area can be increased, as in the case of the example of FIG. There is an advantage that the degree of freedom increases. The “rear pillar” does not necessarily indicate the last pillar of the vehicle. The pillar on the rear side of the area where the protection area as the curtain airbag exists can be a “rear pillar” referred to here.
１０：カーテンエアバッグ装置
２０：エアバッグ
２０ａ，２０ｂ：折返し部
１４：インフレータ
３２：前方のストラップ
３４：前方のストラップの後方連結部
５０：Ａピラー 10: Curtain airbag device 20: Air bags 20a, 20b: Folding portion 14: Inflator 32: Front strap 34: Rear strap rear connection portion 50: A pillar

Claims (5)

  1. 　車室内の側面窓付近でカーテン状に展開することで乗員を保護するカーテンエアバッグ装置において、
    　膨張展開可能なエアバッグと；
    　前記エアバッグと車体とを連結するストラップとを備え、
    　前記エアバッグは、棒状に圧縮するに際して、平面的に広げた状態から前端部をＺ状に折り畳み、その後、下端部から上方に向かってロール状又はジグザグ状に圧縮し、
    　前記ストラップの一端が、前記エアバッグの車両側面方向の外側において前記Ｚ状の折り畳み部分の最も前方の折り目よりも後方に連結され、
    　圧縮された前記エアバッグは、Ａピラー部分には配備されないことを特徴とするカーテンエアバッグ装置。     In the curtain airbag device that protects the occupant by deploying in the form of a curtain near the side window in the passenger compartment,
    An inflatable airbag;
    A strap for connecting the airbag and the vehicle body;
    When the airbag is compressed into a rod shape, the front end portion is folded in a Z shape from a flatly spread state, and then compressed upward in a roll shape or zigzag shape from the lower end portion,
    One end of the strap is connected to the rear of the frontmost fold line of the Z-shaped fold portion on the outer side of the airbag in the lateral direction of the vehicle,
    The curtain airbag device according to claim 1, wherein the compressed airbag is not disposed in the A pillar portion.
  2. 　前記ストラップの他端がＡピラー部分に連結されることを特徴とする請求項１に記載のカーテンエアバッグ装置。 The curtain airbag device according to claim 1, wherein the other end of the strap is connected to an A-pillar portion.
  3. 　車室内の側面窓付近でカーテン状に展開することで乗員を保護するカーテンエアバッグ装置において、
    　膨張展開可能なエアバッグと；
    　前記エアバッグと車体とを連結するストラップとを備え、
    　前記エアバッグは、棒状に圧縮するに際して、平面的に広げた状態から後端部をＺ状に折り畳み、その後、下端部から上方に向かってロール状又はジグザグ状に圧縮し、
    　前記ストラップの一端が、前記エアバッグの車両側面方向の外側において前記Ｚ状の折り畳み部分の最も後方の折り目よりも前方に連結され、
    　圧縮された前記エアバッグは、後方ピラー部分には配備されないことを特徴とするカーテンエアバッグ装置。     In the curtain airbag device that protects the occupant by deploying in the form of a curtain near the side window in the passenger compartment,
    An inflatable airbag;
    A strap for connecting the airbag and the vehicle body;
    When the airbag is compressed into a rod shape, the rear end portion is folded in a Z shape from a flatly spread state, and then compressed upward in a roll shape or zigzag shape from the lower end portion,
    One end of the strap is connected to the front side of the rearmost fold line of the Z-shaped folded part on the outer side of the airbag in the vehicle side surface direction,
    The curtain airbag device according to claim 1, wherein the compressed airbag is not disposed in a rear pillar portion.
  4. 　前記ストラップの他端が後方ピラー部分に連結されることを特徴とする請求項３に記載のカーテンエアバッグ装置。 The curtain airbag device according to claim 3, wherein the other end of the strap is connected to a rear pillar portion.
  5. 　前記エアバッグはメインチャンバーと、車両進行方向の前端に設けられたディレイチャンバーとを含み、
    　前記ストラップの一端は、前記ディレイチャンバーの後方において当該エアバッグに連結されることを特徴とする請求項１乃至４の何れか１項に記載のカーテンエアバッグ装置。     The airbag includes a main chamber and a delay chamber provided at a front end in the vehicle traveling direction,
    5. The curtain airbag device according to claim 1, wherein one end of the strap is connected to the airbag behind the delay chamber. 6.
PCT/JP2011/077633 2010-12-28 2011-11-30 Curtain airbag device WO2012090637A1 (en)

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JP2016199122A (en) * 2015-04-09 2016-12-01 トヨタ自動車株式会社 Curtain airbag device for vehicle
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JP5651711B2 (en) 2015-01-14

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