JP2007308094A - Curtain airbag device - Google Patents

Curtain airbag device Download PDF

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Publication number
JP2007308094A
JP2007308094A JP2006141499A JP2006141499A JP2007308094A JP 2007308094 A JP2007308094 A JP 2007308094A JP 2006141499 A JP2006141499 A JP 2006141499A JP 2006141499 A JP2006141499 A JP 2006141499A JP 2007308094 A JP2007308094 A JP 2007308094A
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Japan
Prior art keywords
curtain airbag
gas
airbag
coupling portion
folded
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JP2006141499A
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JP4850579B2 (en
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Toshikazu Akaha
敏和 赤羽
Satoru Mitsuo
哲 満尾
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Toyota Motor Corp
Autoliv Development AB
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Toyota Motor Corp
Autoliv Development AB
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Priority to JP2006141499A priority Critical patent/JP4850579B2/en
Priority to PCT/JP2007/060347 priority patent/WO2007136027A1/en
Publication of JP2007308094A publication Critical patent/JP2007308094A/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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a curtain airbag device with easy control in a deployment direction eliminating interfering property/attacking property around a garnish (GN) of a curtain airbag and suitably deploying a portion other than a periphery of GN of the curtain airbag along a window glass of a side door. <P>SOLUTION: The airbag 10 stored in a roof side rail part has a gas feeding passage 20 extending in upward and longitudinal direction; and a plurality of cells C<SB>1</SB>, C<SB>2</SB>introduced with an inflation gas downwardly directed from the gas feeding passage 20. In the state that it is once folded/returned to an outdoor side and is rolled/folded to an indoor side, its upper edge is fixed to the roof side rail part. Further, a shape of slot parts S<SB>1</SB>, S<SB>2</SB>for introducing the inflation gas from the gas feeding passage 20 to the respective cells C<SB>1</SB>, C<SB>2</SB>is made to an approximately reverse triangular shape in which an upper side is wide and a lower side is narrowed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、自動車の側面衝突（側突）時やロールオーバー（横転）時にサイドドアの窓等に沿って膨張するカーテンエアバッグ装置に関する。   The present invention relates to a curtain airbag device that inflates along a window or the like of a side door at the time of a side collision (side collision) or rollover (rollover) of an automobile.

ルーフサイドレール部に格納されたエアバッグに、側突又はロールオーバー検出時にインフレーターから膨張用ガスが導入されて車内側に展開することで、乗員の頭部を保護するカーテンエアバッグ装置としては、例えば米国特許第６７５８４９０号公報（US 6,758,490 B2）に記載されているように、車外側に位置するロール部（rolled portion）と車内側に位置する折り返し部（fold portion）を有する構成のものが知られている（特許文献１のFig.4a参照）。
米国特許第６７５８４９０号公報（ＵＳ ６,７５８,４９０ Ｂ２） As a curtain airbag device that protects the occupant's head by introducing an inflation gas from the inflator to the airbag stored in the roof side rail portion when the side collision or rollover is detected and deploying it inside the vehicle, For example, as described in US Pat. No. 6,758,490 (US Pat. No. 6,758,490 B2), a configuration having a rolled portion positioned on the vehicle outer side and a fold portion positioned on the vehicle inner side is known. (See Fig. 4a of Patent Document 1).
US Pat. No. 6,758,490 (US 6,758,490 B2)

このように従来のカーテンエアバッグ装置は、図３に示すようにその上縁部の取付部はルーフサイドレール部ａに固定され、車外側に一度折り返して車内側にロール折りされた状態で前記ルーフサイドレール部ａに格納されている。一度折り返している部分を「＋１」と呼び、ロール部ｒが車外側にあり、「＋１」の折り返し部ｆが車内側にあるので、図３のようなカーテンエアバッグは、「内ロール＋１」折りされたカーテンエアバッグと呼ばれている。 Thus, as shown in FIG. 3, the conventional curtain airbag device has its upper edge mounting portion fixed to the roof side rail portion a, folded once on the outside of the vehicle, and roll-folded on the inside of the vehicle. It is stored in the roof side rail part a. Once folded back and a portion is referred to as "+1", the roll portion r is located outside of the vehicle, since the folded portion f is in the car in the side of the "+ 1", the curtain airbag shown in FIG. 3, "inner roll +1 "It is called a folded curtain airbag.

従来の「内ロール＋１」折りされたカーテンエアバッグでは、「＋１」の折り返し部の寸法管理でエアバッグの展開方向をコントロールしていたが、「＋１」の折り返し部の寸法を管理するだけでは、カーテンエアバッグの展開方向に影響を与えてしまい、エアバッグ展開時にルーフサイドレール部やヘッドライナー等のガーニッシュ（ＧＮ）類との干渉性・攻撃性が問題となり、理想的な展開方向との両立が難しかった。   In the conventional curtain airbag folded “inner roll + 1”, the deployment direction of the airbag was controlled by the dimension management of the “+1” folded part, but only by managing the dimension of the “+1” folded part. This will affect the deployment direction of the curtain airbag, causing interference and aggression with garnishes (GN) such as roof side rails and head liners when the airbag is deployed. It was difficult to balance.

本発明は、上記の課題を解決するものであり、カーテンエアバッグのガーニッシュ（ＧＮ）回りの干渉性・攻撃性をなくし、カーテンエアバッグのＧＮ回り以外の部分は、サイドドアの窓ガラスに沿って適切に展開させる、といった展開方向のコントロールが容易なカーテンエアバッグ装置を提供することを目的とする。   The present invention solves the above-mentioned problems, eliminates the interference and aggression around the garnish (GN) of the curtain airbag, and the portion other than the GN around the curtain airbag is along the window glass of the side door. It is an object of the present invention to provide a curtain airbag device in which the deployment direction can be easily controlled by appropriately deploying.

そのために本発明のカーテンエアバッグ装置は、ルーフサイドレール部に格納されたエアバッグに、側突又はロールオーバー検出時にインフレーターから膨張用ガスが導入されて車内側に展開することで、乗員の頭部を保護するカーテンエアバッグ装置であって、
前記エアバッグは、その上方長手方向に延びるガス供給路と、前記ガス供給路から下方に向けて膨張用ガスが導入される複数のセルとを有するとともに、車外側に一度折り返して車内側にロール折りされた状態で、その上縁部が前記ルーフサイドレール部に固定され、さらに前記ガス供給路から前記各セルに膨張用ガスを導入するスロット部の形状を上方が広く下方が絞られた略逆三角形状としたことを特徴とする。
そして、前記スロット部は、着座した乗員頭部に対応する領域に配置し、ピラーガーニッシュに対応する領域には配置しないようにすることが好ましい。 For this purpose, the curtain airbag device of the present invention introduces an inflating gas from an inflator to the airbag stored in the roof side rail portion when a side collision or rollover is detected and deploys it to the passenger's head. A curtain airbag device for protecting a part,
The airbag has a gas supply path extending in the upper longitudinal direction thereof and a plurality of cells into which inflation gas is introduced downward from the gas supply path, and is folded back to the vehicle exterior side and rolled to the vehicle interior side. In the folded state, the upper edge portion is fixed to the roof side rail portion, and the shape of the slot portion for introducing the expansion gas from the gas supply path to each cell is broadened upward and the lower portion is narrowed down. It is characterized by an inverted triangle shape.
And it is preferable to arrange | position the said slot part in the area | region corresponding to the seated passenger | crew head, and not to arrange | position in the area | region corresponding to a pillar garnish.

本発明のカーテンエアバッグ装置は、「＋１」の折り返し部の寸法管理とセルパターンの組み合わせによりエアバッグの展開方向をコントロールできるので、ルーフサイドレール部やヘッドライナー等のガーニッシュ（ＧＮ）類との干渉性・攻撃性と理想的な展開方向の両立を可能とする。   The curtain airbag device of the present invention can control the deployment direction of the airbag by combining the dimension management of the folded portion of “+1” and the cell pattern, so that it can be used with garnishes (GN) such as roof side rails and head liners. It enables coexistence / aggression and ideal deployment direction.

本発明の実施の形態の一例を図面を参照して詳細に説明する。
図１（Ａ）は本発明の実施の形態に係るカーテンエアバッグ装置の正面図、図１（Ｂ）は「内ロール＋１」折りされた状態の図１（Ａ）のカーテンエアバッグ装置のスロット部の断面図、図２は図１のスロット部の展開初期の膨張状態を説明する断面図、図３はカーテンエアバッグの「内ロール＋１」折りを説明する断面図である。 An example of an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1A is a front view of a curtain airbag device according to an embodiment of the present invention, and FIG. 1B is a slot of the curtain airbag device of FIG. 2 is a cross-sectional view for explaining the inflated state of the slot portion in FIG. 1 at the initial stage of deployment, and FIG. 3 is a cross-sectional view for explaining the “inner roll + 1” folding of the curtain airbag.

カーテンエアバッグ装置Ｍのエアバッグ１０は、「内ロール＋１」折りにて折り畳まれた状態で、例えば自動車のフロントピラーからリアピラーにかけてルーフサイドレール部に沿って格納され、自動車の側突又はロールオーバー検出時にインフレーターから膨張用ガスが導入されて、車室側面に沿って車内側にカーテン状に膨張展開し、自動車内の前席及び後席の乗員の頭部を受けとめて頭部を保護し、あるいは窓ガラスが割れて乗員が車外に投げ出されることを防止する。   The airbag 10 of the curtain airbag device M is folded along the “inner roll + 1” fold, and is stored along the roof side rail portion from the front pillar to the rear pillar of the automobile, for example, and the vehicle side impact or rollover At the time of detection, inflation gas is introduced from the inflator, and inflated and deployed in the shape of a curtain along the side of the passenger compartment, protecting the head by receiving the heads of front and rear passengers in the car, Alternatively, the window glass is broken and the occupant is prevented from being thrown out of the vehicle.

前記エアバッグ１０は、膨張展開完了時に車室側面と車室内とにそれぞれ面する内側シートと外側シートを重ね合わせ、これらシートを線状結合部及び環状結合部によって結合することにより、その上方長手方向に延びるガス供給路２０、前記ガス供給路２０から下方に向けて膨張用ガスが導入される複数のセルＣ１，Ｃ２、及び非膨張部Ｎ１，Ｎ２が形成される。 When the airbag 10 is inflated and deployed, an inner sheet and an outer sheet facing the vehicle compartment side surface and the vehicle compartment are overlapped, and these sheets are joined together by a linear joint portion and an annular joint portion. A gas supply path 20 extending in the direction, a plurality of cells C 1 and C 2 into which expansion gas is introduced downward from the gas supply path 20, and non-expanded portions N 1 and N 2 are formed.

前記ガス供給路の一方の入口２１は、前記エアバッグ１０上方のリアピラー側の端部に形成され、前記前記ガス供給路２０の他方の入口２２は、前記エアバッグ１０上方のフロントピラー側の端部に形成される。上記一方の入口２１および他方の入口２２には、それぞれガス供給源であるインフレータ（図示せず）に接続されている。   One inlet 21 of the gas supply path is formed at an end on the rear pillar side above the airbag 10, and the other inlet 22 of the gas supply path 20 is an end on the front pillar side above the airbag 10. Formed in the part. The one inlet 21 and the other inlet 22 are connected to an inflator (not shown) as a gas supply source.

線状結合部１１は、前記エアバッグ１０を略周回するように配設される。前記他方の入口２２側に配設された線状結合部１２は、前記線状結合部１１の入口２２側の部分とともにスロット部Ｓ１を形成する。このスロット部Ｓ１は前記ガス供給路２０からセルＣ１へ膨張ガスを導入する部分であり、このスロット部Ｓ１の形状は前記線状結合部１１と前記線状結合部１２により構成され、その形状は上方が広く下方が絞られた略逆三角形状をなしている。 The linear coupling portion 11 is disposed so as to substantially circulate the airbag 10. The other inlet 22 side linear connected portion 12 disposed forms a slot portion S 1 with an inlet 22 side of the portion of the linear coupling unit 11. The slot portion S 1 is a portion that introduces expansion gas from the gas supply path 20 into the cell C 1 , and the shape of the slot portion S 1 is constituted by the linear coupling portion 11 and the linear coupling portion 12. The shape is a substantially inverted triangular shape with the upper part being wide and the lower part being squeezed.

いわゆる「内ロール＋１」折りされたエアバッグ１０は、膨張展開時の初期は、スロット部Ｓ１が略逆三角形状をなして絞られている（絞りを形成している）ため、下方のセルへの膨張用ガスの導入が制限される。この結果、主に前記スロット部Ｓ１の折り返し部Ｓ１−ｆが膨張してロール部Ｓ１−ｒを強く車外側に押し付け（図２参照）、その後サイドドアの窓ガラス沿いに前記ロール部Ｓ１−ｒが展開する。 The so-called “inner roll + 1” folded airbag 10 has a slot cell S 1 that is initially squeezed in a substantially inverted triangle shape (forms a squeeze), so that the lower cell The introduction of the inflation gas into is limited. As a result, the folded portion S 1 -f of the slot portion S 1 mainly expands and strongly presses the roll portion S 1 -r to the outside of the vehicle (see FIG. 2), and then the roll portion along the window glass of the side door. S 1 -r expands.

前記線状結合部１２は前記線状結合部１１下方から上方向に延設され略「ク」字形をなし、その内側にセルＣ１を形成し、その端部は環状結合部１２ａに連なっており、環状結合部１２ａは線状結合部１２の端部を補強している。 The linear coupling portion 12 extends upward from below the linear coupling portion 11 and has a substantially “K” shape. A cell C 1 is formed inside the linear coupling portion 11, and an end thereof is connected to the annular coupling portion 12 a. The annular coupling portion 12a reinforces the end of the linear coupling portion 12.

前記線状結合部１２に隣接して略Ｊ字形の線状結合部１３が配設され、略「ロ」字形の線状連結部１４は、この線状結合部１３に連なり、前記線状結合部１４の内側には非膨張部Ｎ１が形成される。前記線状結合部１３の端部は環状結合部１３ａに連なっており、環状結合部１３ａは線状結合部１３の端部を補強している。 A substantially J-shaped linear coupling portion 13 is disposed adjacent to the linear coupling portion 12, and a substantially “B” -shaped linear coupling portion 14 is connected to the linear coupling portion 13, so that the linear coupling is performed. the inner parts 14 non-inflatable portion N 1 is formed. An end portion of the linear coupling portion 13 is connected to the annular coupling portion 13 a, and the annular coupling portion 13 a reinforces the end portion of the linear coupling portion 13.

前記線状結合部１４と隣接して略７字形の線状結合部１５が配設される。前記線状結合部１５は、前記線状結合部１１下方から上方向に延設され、その端部は環状結合部１５ａに連なっており、環状結合部１５ａは線状結合部１５の端部を補強している。   A substantially 7-shaped linear coupling portion 15 is disposed adjacent to the linear coupling portion 14. The linear coupling portion 15 extends upward from below the linear coupling portion 11, and its end portion is connected to the annular coupling portion 15 a, and the annular coupling portion 15 a extends from the end of the linear coupling portion 15. It is reinforced.

前記線状結合部１５は、線状結合部１６とともにセルＣ２を形成する。前記線状結合部１６の両端は環状結合部１６ａ，１６ｂに連なっている。前記環状結合部１５ａと前記環状結合部１６ａの隙間から膨張用ガスが前記セルＣ２に流れ込む。 The linear coupling element 15 forms a cell C 2 with the linear coupling unit 16. Both ends of the linear coupling portion 16 are connected to the annular coupling portions 16a and 16b. Inflation gas flows into the cell C 2 from the gap of the annular coupling portion 15a and the annular coupling portion 16a.

前記線状結合部１５は、前記線状結合部１４とともにスロット部Ｓ２を形成する。このスロット部Ｓ２は前記ガス供給路２０からセルＣ２へ膨張ガスを導入する部分であり、このスロット部Ｓ２の形状は前記線状結合部１４と前記線状結合部１５により構成され、その形状は上方が広く下方が絞られた略逆三角形状をなしている。 The linear coupling unit 15 form a slot portion S 2 with the linear coupling unit 14. The slot portion S 2 is a portion for introducing an expansion gas from the gas supply path 20 to the cell C 2 , and the shape of the slot portion S 2 is constituted by the linear coupling portion 14 and the linear coupling portion 15. The shape is a substantially inverted triangular shape with the upper part being wide and the lower part being squeezed.

いわゆる「内ロール＋１」折りされたエアバッグ１０は、膨張展開時の初期は、図２に示すように前記スロット部Ｓ２の折り返し部Ｓ２−ｆに膨張ガス用が導入されるので、ロール部Ｓ２−ｒが強く車外側に押し付けられ、その後サイドドアの窓ガラス沿いに前記ロール部Ｓ２−ｒが展開する。 Since the airbag 10 folded so-called “inner roll + 1” is initially introduced into the folded portion S 2 -f of the slot portion S 2 as shown in FIG. part S 2-r is pressed strongly vehicle exterior side, the roll portion S 2 -r is deployed along the window glass of the subsequent side door.

前記線状結合部１５に隣接して略Ｊ字形の線状結合部１７が配設され、略「ロ」字形の線状連結部１８は、この線状結合部１７に連なり、前記線状結合部１８の内側に非膨張部Ｎ２が形成される。前記線状結合部１７の端部は環状結合部１７ａに連なっており、環状結合部１７ａは線状結合部１７の端部を補強している。 A substantially J-shaped linear coupling portion 17 is disposed adjacent to the linear coupling portion 15, and a substantially “B” -shaped linear coupling portion 18 is connected to the linear coupling portion 17, and the linear coupling portion is connected to the linear coupling portion 17. A non-inflatable part N 2 is formed inside the part 18. An end portion of the linear coupling portion 17 is connected to the annular coupling portion 17 a, and the annular coupling portion 17 a reinforces the end portion of the linear coupling portion 17.

前記線状連結部１８に隣接して線状結合部１９が配設される。前記線状結合部１９の両端は環状結合部１９ａ，１９ｂに連なっている。また、前記線状結合部１１の前記入口２１近傍には環状結合部１１ａが形成される。   A linear coupling portion 19 is disposed adjacent to the linear coupling portion 18. Both ends of the linear coupling portion 19 are connected to the annular coupling portions 19a and 19b. An annular coupling portion 11 a is formed in the vicinity of the inlet 21 of the linear coupling portion 11.

各線状結合部１１〜１９及び各環状結合部１１ａ〜１９ａ，１６ｂ，１９ｂは、前記内側シートと外側シート同士を気密に結合し、なおかつ前記エアバッグ１０の内圧が設計上限圧力まで上昇しても前記内側シートと外側シート同士が離反しないような強固な結合手段（例えば、強度の高い縫糸による縫合や、接着力の高い接着剤による接着、あるいは溶着）により形成される。   Even if each linear coupling part 11-19 and each annular coupling part 11a-19a, 16b, 19b couple | bond the said inner sheet | seat and outer sheet | seat airtightly, and the internal pressure of the said airbag 10 rises to a design upper limit pressure, The inner sheet and the outer sheet are formed by strong bonding means (for example, stitching with a high-strength sewing thread, bonding with an adhesive with high adhesive force, or welding) so that the inner sheet and the outer sheet are not separated from each other.

前記エアバッグ１０を周回するように配設された線状結合部１１を囲むように膨張用ガスを流入させない上周縁部５０と下周縁部５１と有する。前記上周縁部５０の上縁側には、前記エアバッグ１０をルーフサイドレール部に取り付けるための複数の取付部５３が形成されている。また、前記下周縁５１のフロントピラー側には、クランプ５４が固着され、自動車内の所定の接続部（フロントピラー下部）に接続される。   It has the upper peripheral part 50 and the lower peripheral part 51 which do not let the gas for an expansion | swell flow so that the linear coupling | bond part 11 arrange | positioned so that the said airbag 10 may be circulated may be enclosed. A plurality of attachment portions 53 for attaching the airbag 10 to the roof side rail portion are formed on the upper edge side of the upper peripheral edge portion 50. Further, a clamp 54 is fixed to the front pillar side of the lower peripheral edge 51 and is connected to a predetermined connecting portion (lower front pillar) in the automobile.

このように構成されたエアバッグ１０を有するカーテンエアバッグ装置Ｍは、側突又はロールオーバー検出時にインフレーターから膨張用ガスがガス供給路２０の入口２１から導入され、膨張展開時の初期は、スロット部Ｓ１（Ｓ２）の折り返し部Ｓ１−ｆ（Ｓ２−ｆ）に膨張用ガスが導入されるので、ロール部Ｓ１−ｒが強く車外側に押し付けられ、その後セルＣ１、セルＣ２等に膨張用ガスが導入されるので、サイドドアの窓ガラス沿いに前記ロール部Ｓ１−ｒ（Ｓ２−ｒ）が展開し、カーテン状に下方へ広がる。従って、乗員の頭部Ｈとピラーや窓ガラスとの隙間が狭くても、その間にカーテンエアバッグをスムーズに展開させることができる。一方、ピラーガーニッシュＧＮに対応する領域では、乗員の頭部Ｈに対応する領域に比べて車室内側に向かってカーテンエアバッグが展開されることから、カーテンエアバッグのピラーガーニッシュ上端部への引っ掛かりやピラーガーニッシュの飛散を抑制することが可能である（図４参照）。この結果、側突時やロールオーバー時において、乗員の頭部Ｈを有効に保護することができると共にカーテンエアバッグのピラーガーニッシュＧＮへの引っ掛かりやピラーガーニッシュの飛散を抑制することができる。 In the curtain airbag apparatus M having the airbag 10 configured as described above, the inflation gas is introduced from the inlet 21 of the gas supply path 20 from the inflator when a side collision or rollover is detected, Since the expansion gas is introduced into the folded portion S 1 -f (S 2 -f) of the portion S 1 (S 2 ), the roll portion S 1 -r is strongly pressed to the outside of the vehicle, and then the cell C 1 , cell Since the expansion gas is introduced into C 2 or the like, the roll portion S 1 -r (S 2 -r) expands along the window glass of the side door and spreads downward in a curtain shape. Therefore, even if the gap between the occupant's head H and the pillar or window glass is narrow, the curtain airbag can be smoothly deployed between them. On the other hand, in the region corresponding to the pillar garnish GN, the curtain airbag is deployed toward the vehicle interior side compared to the region corresponding to the occupant's head H, so that the curtain airbag is caught on the upper end of the pillar garnish. And the scattering of pillar garnish can be suppressed (see FIG. 4). As a result, it is possible to effectively protect the occupant's head H at the time of a side collision or rollover, and to prevent the curtain airbag from being caught on the pillar garnish GN and from scattering of the pillar garnish.

以上、本発明の実施の形態について説明したが、本発明はこれらに何ら限定されるものでもなく、特許請求の範囲に示された技術的思想において変更可能である。   As mentioned above, although embodiment of this invention was described, this invention is not limited to these at all, and can be changed in the technical idea shown by the claim.

（Ａ）は本発明の実施の形態に係るカーテンエアバッグ装置の正面図、（Ｂ）は「内ロール＋１」折りされた状態の図１（Ａ）のカーテンエアバッグ装置のスロット部の断面図である。(A) is a front view of the curtain airbag device according to the embodiment of the present invention, (B) is a cross-sectional view of the slot portion of the curtain airbag device of FIG. It is. 図１のスロット部の展開初期の膨張状態を説明する断面図である。It is sectional drawing explaining the expansion state of the expansion | deployment initial stage of the slot part of FIG. カーテンエアバッグの「内ロール＋１」折りを説明する断面図である。It is sectional drawing explaining the "inner roll + 1" folding of a curtain airbag. 図１のカーテンエアバッグ装置の展開時の乗員頭部とピラーガーニッシュとの位置関係を示す図である。It is a figure which shows the positional relationship of a passenger | crew head and pillar garnish at the time of expansion | deployment of the curtain airbag apparatus of FIG.

符号の説明Explanation of symbols

１０ エアバッグ
１１〜１９ 線状結合部
１１ａ〜１９ａ，１６ｂ，１９ｂ 環状結合部
２０ ガス供給路
２１ 一方の入口
２２ 他方の入口
Ｃ１，Ｃ２セル
Ｓ１，Ｓ２ スロット部
Ｓ１−ｆ，Ｓ２−ｆ 折り返し部
Ｓ１−ｒ，Ｓ２−ｒ ロール部
Ｎ１，Ｎ２ 非膨張部
ＧＮ ガーニッシュ
Ｈ 乗員の頭部
10 airbag 11 to 19 linear coupling portion 11a~19a, 16b, 19b annular coupling portion 20 gas supply passage 21 while the inlet 22 the other of the inlet C 1, C 2 cells S 1, S 2 slots S 1 -f, S 2 -f folded portion S 1 -r, S 2 -r roll unit N 1, N 2 non-inflatable portion GN garnish H occupant's head

Claims (2)

ルーフサイドレール部に格納されたエアバッグに、側突又はロールオーバー検出時にインフレーターから膨張用ガスが導入されて車内側に展開することで、乗員の頭部を保護するカーテンエアバッグ装置であって、
前記エアバッグは、その上方長手方向に延びるガス供給路と、前記ガス供給路から下方に向けて膨張用ガスが導入される複数のセルとを有するとともに、車外側に一度折り返して車内側にロール折りされた状態で、その上縁部が前記ルーフサイドレール部に固定され、さらに前記ガス供給路から前記各セルに膨張用ガスを導入するスロット部の形状を上方が広く下方が絞られた略逆三角形状としたことを特徴とするカーテンエアバッグ装置。 A curtain airbag device for protecting an occupant's head by introducing an inflating gas from an inflator to a airbag stored in a roof side rail portion when a side collision or rollover is detected and deploying the airbag to the inside of the vehicle. ,
The airbag has a gas supply path extending in the upper longitudinal direction thereof and a plurality of cells into which inflation gas is introduced downward from the gas supply path, and is folded back to the vehicle exterior side and rolled to the vehicle interior side. In the folded state, the upper edge portion is fixed to the roof side rail portion, and the shape of the slot portion for introducing the expansion gas from the gas supply path to each cell is broadened upward and the lower portion is narrowed down. A curtain airbag device characterized by having an inverted triangular shape. 前記スロット部は、着座した乗員頭部に対応する領域に配置し、ピラーガーニッシュに対応する領域には配置しないことを特徴とする請求項１記載のカーテンエアバッグ装置。
2. The curtain airbag device according to claim 1, wherein the slot portion is disposed in a region corresponding to a seated occupant head and is not disposed in a region corresponding to a pillar garnish.
JP2006141499A 2006-05-22 2006-05-22 Curtain airbag device Expired - Fee Related JP4850579B2 (en)

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