JP6367780B2 - Side airbag device and manufacturing method thereof - Google Patents

Side airbag device and manufacturing method thereof Download PDF

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JP6367780B2
JP6367780B2 JP2015211579A JP2015211579A JP6367780B2 JP 6367780 B2 JP6367780 B2 JP 6367780B2 JP 2015211579 A JP2015211579 A JP 2015211579A JP 2015211579 A JP2015211579 A JP 2015211579A JP 6367780 B2 JP6367780 B2 JP 6367780B2
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airbag
vehicle
folded
folding
bottom portion
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JP2017081408A (en
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畠山　直樹
直樹 畠山
敦 村井
敦 村井
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Autoliv Development AB
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Description

本発明は、特に車両が側面から衝突された時（以下、側面衝突時という。）に、乗員を保護するため、車両に設置されるサイドエアバッグ装置、及び当該サイドエアバッグ装置を製造する方法に関するものである。   The present invention relates to a side airbag device installed in a vehicle and a method for manufacturing the side airbag device in order to protect an occupant particularly when the vehicle collides from the side (hereinafter referred to as a side collision). It is about.

以下、本願において「上」「上方」とは自動車の天井側を、「下」「下方」とは自動車の床側を意味する。また、「前」「前方」とは自動車の前進方向側を、「後」「後方」とは自動車の後退方向側を意味する。   Hereinafter, in the present application, “upper” and “upper” mean the ceiling side of the automobile, and “lower” and “lower” mean the floor side of the automobile. Further, “front” and “front” mean the forward direction side of the automobile, and “rear” and “rear” mean the backward direction side of the automobile.

特に側面衝突時の衝撃から乗員を保護するサイドエアバッグ装置は、シートの背もたれ部（以下、シートバックという。）の窓側の側方内部に設置されるのが一般的である。   In particular, a side airbag device that protects an occupant from an impact at the time of a side collision is generally installed inside a side of a seat back portion (hereinafter referred to as a seat back) on the window side.

このサイドエアバッグ装置は、側面衝突時、衝撃を検知したセンサーからの出力信号によってインフレータが作動してガスを発生し、車両の内側面と乗員の間にエアバッグが展開する構成である。   This side airbag device has a configuration in which, when a side collision occurs, an inflator is operated by an output signal from a sensor that detects an impact to generate gas, and an airbag is deployed between the inner side surface of the vehicle and an occupant.

このような構成のサイドエアバッグ装置では、エアバッグの展開速度が遅い場合、乗員がサイドドアに衝突してしまうおそれがある。また、エアバッグの展開中に乗員が接触した場合、エアバッグの展開性能が悪くなるおそれがある。   In the side airbag device having such a configuration, there is a possibility that the occupant may collide with the side door when the deployment speed of the airbag is slow. In addition, if an occupant comes in contact with the airbag during deployment, the deployment performance of the airbag may be degraded.

従って、サイドエアバッグ装置では、乗員がサイドドアに衝突しないよう、また、展開中に乗員が接触しないよう、エアバッグの展開速度の向上を目的として、エアバッグの折り込み方法を規定した種々の提案がなされている。   Therefore, in the side airbag device, various proposals that define the airbag folding method for the purpose of improving the deployment speed of the airbag so that the occupant does not collide with the side door and so that the occupant does not contact during deployment. Has been made.

例えば特許文献１では、エアバッグの先端方向への展開速度を向上するため、基端側の一部分をエアバッグの基端側から先端側へ向かう方向に対して斜めに折り返した上で、エアバッグの先端側から基端側へ向かって折り畳む又は巻き畳むようにしている。   For example, in Patent Document 1, in order to improve the deployment speed of the airbag in the distal direction, a portion of the proximal end side is folded back obliquely with respect to the direction from the proximal end side to the distal end side of the airbag. It is made to fold or wind from the front end side to the base end side.

しかしながら、特許文献１で提案されたエアバッグの折り返しは、蛇腹折りを混ぜながら同じ方向に行うので、エアバッグの展開方向を規制することが難しく、展開方向にバラツキを生じるおそれがある。   However, since the folding of the airbag proposed in Patent Document 1 is performed in the same direction while mixing the bellows folds, it is difficult to regulate the deployment direction of the airbag and there is a possibility that the deployment direction varies.

また、特許文献２では、例えば、エアバッグの上端部をエアバッグ内に折り込んだ後、当該エアバッグを先端部と基端側の固定部の間で蛇腹折りして固定部の展開方向の前方に配置し、かつ固定部に続く部分が内側に位置するよう後方に向かって二つ折りしている。   Further, in Patent Document 2, for example, after the upper end portion of the airbag is folded into the airbag, the airbag is bellows folded between the distal end portion and the fixed portion on the proximal end side, and the front portion in the deployment direction of the fixed portion. And is folded in two toward the rear so that the portion following the fixed portion is located inside.

しかしながら、特許文献２のように、エアバッグの上端部をエアバッグ内に折り込む場合、図９に示すように、第１の折り線２に沿う折り込み部３の底近くまで、第２の折り線４に沿って折り込んだ余り部５の先端が位置すると、展開時の抵抗が大きくなる。この場合、蛇腹折り又は巻いたエアバッグ１が完全に展開しないと折り込んだ余り部４が外に出なくなる。なお、前記「折り込み部」を「タックイン」とも言う。   However, when the upper end portion of the airbag is folded into the airbag as in Patent Document 2, the second fold line extends to the vicinity of the bottom of the fold portion 3 along the first fold line 2 as shown in FIG. When the tip of the surplus part 5 folded along 4 is positioned, the resistance during deployment increases. In this case, if the folded airbag 1 or the airbag 1 is not fully deployed, the folded excess portion 4 will not come out. The “folded portion” is also referred to as “tack-in”.

特開２０１０−０７０１７８号公報JP 2010-070178 A 特開２０１３−０９１４２１号公報JP2013-091421A

本発明が解決しようとする問題点は、エアバッグの上端部をエアバッグ内に折り込む際、エアバッグの折り返しを同じ方向に行う場合、エアバッグの展開方向を規制することが難しく、展開方向にバラツキを生じるおそれがあるという点である。また、エアバッグの上端部をエアバッグ内に折り込む場合、第１の折り線に沿う折り込み部の底近くまで、第２の折り線に沿って折り込んだ余り部の先端が位置すると、エアバッグが完全に展開するまでは余り部が折り込み部の外に出ないという点である。   The problem to be solved by the present invention is that when the upper end of the airbag is folded into the airbag, when the airbag is folded in the same direction, it is difficult to regulate the deployment direction of the airbag. There is a possibility of causing variation. Further, when the upper end of the airbag is folded into the airbag, when the tip of the surplus portion folded along the second fold line is positioned near the bottom of the fold along the first fold line, the airbag is It is a point that a surplus part does not come out of a folding part until it expand | deploys completely.

本発明は、前記課題を解決し、エアバッグの、例えば上端部をエアバッグ内に折り込む場合に、ロール状に巻き取ったエアバッグが完全に展開しなくても、前記エアバッグ内に折り込んだ部分を展開させることを目的としている。   The present invention solves the above problems, and when the upper end of the airbag is folded into the airbag, for example, the airbag wound in a roll shape is folded into the airbag even if it is not fully deployed. The purpose is to expand the part.

すなわち、本発明は、
シートの背もたれ部の側面部に内蔵され、車両の内側面とシートに着座した乗員の間に展開するサイドエアバッグ装置であり、
エアバッグと、
このエアバッグ内に設けられ、側面衝突時にセンサーからの出力信号を受け、折り畳み状態の前記エアバッグにガスを供給して展開させるインフレータと、
を備えている。 That is, the present invention
It is a side airbag device that is built in the side part of the backrest part of the seat and that is deployed between the inner side of the vehicle and the occupant seated on the seat,
An airbag,
An inflator that is provided in the airbag, receives an output signal from the sensor at the time of a side collision, supplies gas to the airbag in a folded state, and deploys it;
It has.

そして、本発明では、
前記エアバッグは、上端部（又は下端部）をエアバッグ内に折り込む一方、当該折り込んだ折り込み部の底部からエアバッグの外方向に向けて折り返す余り部を有し、
前記折り込み部は、折り込んだ際にエアバッグの外周端となる折り線部分が、車両の前方から後方に向けて略直線状に車両の上方向（又は下方向）に向けて傾斜する一方、当該折り込み部の前記底部は、車両の前方側から車両の後方側に向けて延びる前方底部と、この前方底部の車両後方側端部から車両の後方側かつ車両の上方向（又は下方向）に向けて傾斜する後方底部を有するように形成し、
前記余り部は、前記後方底部の方向に寄せて折り畳んで前記折り込み部に収容されることを最も主な特徴としている。 And in the present invention,
The airbag has a surplus portion that folds the upper end portion (or lower end portion) into the airbag while folding back from the bottom of the folded portion into the airbag.
In the folding portion, a folding line portion that becomes an outer peripheral end of the airbag when folded is inclined in a substantially straight shape from the front to the rear of the vehicle toward the upper direction (or the lower direction) of the vehicle, The bottom portion of the folding portion extends from the front side of the vehicle toward the rear side of the vehicle, and from the vehicle rear side end portion of the front bottom portion toward the rear side of the vehicle and upward (or downward) of the vehicle. And having a rear bottom that slopes
The surplus part is most mainly characterized in that it is folded toward the rear bottom part and folded and accommodated in the folded part.

本発明では、折り込み部を、折り込んだ際にエアバッグの外周端となる折り線部分が、車両の前方から後方に向けて略直線状に車両の上方向（又は下方向）に向けて傾斜させている。従って、エアバッグを車両の前方から巻き取る際に、エアバッグの車両の前方側の折り込み部が巻き取られる範囲が少なくなるので、エアバッグの展開時、前記巻き取ったエアバッグが完全に展開しなくても折り込み部に収容された余り部が飛び出しやすくなる。   In the present invention, the fold line portion that becomes the outer peripheral end of the airbag when the fold portion is folded is inclined in a substantially straight line from the front to the rear of the vehicle in the upward direction (or downward direction) of the vehicle. ing. Therefore, when the airbag is wound from the front of the vehicle, the range in which the folded portion of the airbag on the front side of the vehicle is wound is reduced. Therefore, when the airbag is deployed, the wound airbag is completely deployed. Even if it does not do, the surplus part accommodated in the folding part will protrude easily.

本発明において、前記余り部の折り畳み構造は特に限定されないが、例えば車両の上下方向の折れ線に沿ってエアバッグの厚み方向に、例えば前記折り込み部の前記前方底部の後端部を中心とした扇状に折り畳んで重ねられたプリーツ構造とすればよい。   In the present invention, the folding structure of the surplus portion is not particularly limited. For example, in the thickness direction of the airbag along the vertical folding line of the vehicle, for example, a fan shape centering on the rear end portion of the front bottom portion of the folding portion. The pleat structure may be folded and stacked.

本発明では、エアバッグの展開時、前記巻き取ったエアバッグが完全に展開しなくても折り込み部に収容された余り部が飛び出しやすくなるので、展開速度の向上を阻害されることがない。   In the present invention, when the airbag is deployed, even if the wound airbag does not completely deploy, the surplus portion accommodated in the folding portion is likely to jump out, so that improvement in deployment speed is not hindered.

本発明のサイドエアバッグ装置のエアバッグを展開した状態を車両の側面方向から見た図である。It is the figure which looked at the state which developed the air bag of the side air bag device of the present invention from the side of the vehicle. （ａ）、（ｂ）、（ｄ）（ｅ）は本発明のサイドエアバッグ装置のエアバッグの折り込み方法を順に説明する、車両の側面方向から見た図、（ｃ）は（ｂ）図の矢視Ａ−Ａ断面図であり、（ｂ）には車両の上方向から見た図を、（ｅ）には車両の下方向から見た図を合わせて示す。(A), (b), (d) (e) is the figure seen from the side surface direction of a vehicle explaining the folding method of the airbag of the side airbag apparatus of this invention in order, (c) is (b) figure. FIG. 6 is a cross-sectional view taken along the line A-A in FIG. 5, (b) shows a view seen from above the vehicle, and (e) shows a view seen from below the vehicle. （ａ）は本発明方法によって折り込んだエアバッグを説明する図、（ｂ）は第１の折り線部分を、車両の前方から後方に向けて略水平状として折り込んだエアバッグを説明する図である。(A) is a figure explaining the airbag folded by the method of this invention, (b) is a figure explaining the airbag folded into the 1st folding line part as a substantially horizontal shape toward the back from the front of a vehicle. is there. 本発明のサイドエアバッグ装置のエアバッグの展開時の効果を説明する図である。It is a figure explaining the effect at the time of expansion | deployment of the airbag of the side airbag apparatus of this invention. サイドエアバッグ装置のエアバッグ展開後の状態を車両の前側から見た図で、（ａ）は図３（ａ）のエアバッグの場合、（ｂ）は図３（ｂ）のエアバッグの場合である。The state after the airbag deployment of the side airbag device is seen from the front side of the vehicle, (a) is the case of the airbag of FIG. 3 (a), (b) is the case of the airbag of FIG. 3 (b) It is. 本発明のサイドエアバッグ装置の第２の例を示した図で、（ａ）は車両の側面方向から見た図、（ｂ）は車両の上方向から見た図である。It is the figure which showed the 2nd example of the side airbag apparatus of this invention, (a) is the figure seen from the side surface direction of a vehicle, (b) is the figure seen from the vehicle upper direction. 本発明のサイドエアバッグ装置の第３の例を示した図６と同様の図である。It is a figure similar to FIG. 6 which showed the 3rd example of the side airbag apparatus of this invention. 本発明のサイドエアバッグ装置の第４の例を車両の側面方向から見た図である。It is the figure which looked at the 4th example of the side airbag device of the present invention from the side of a vehicle. エアバッグの上端部をエアバッグ内に折り込む場合に、第１の折り線に沿う折り込み部の底近くまで、第２の折り線に沿う折り込み部の先端が位置する場合の問題を説明する図であり、（ａ）は第１の折り線に沿って折り込んだときの図、（ｂ）は第２の折り線に沿って折り込んだときの図である。The figure explaining the problem in case the front-end | tip of a fold part which follows a 2nd fold line is located near the bottom of the fold part which follows a 1st fold line, when folding the upper end part of an airbag in an airbag. FIG. 4A is a diagram when the first fold line is folded, and FIG. 4B is a diagram when the second fold line is folded.

エアバッグの例えば上端部をエアバッグ内に折り込む場合、第１の折り線に沿う折り込み部の底近くまで、第２の折り線に沿って折り込んだ余り部の先端が位置すると、エアバッグが完全に展開しないと余り部が折り込み部の外に出なくなる。   For example, when the upper end of the airbag is folded into the airbag, the tip of the surplus portion folded along the second fold line is positioned near the bottom of the fold along the first fold line. If it is not spread out, the excess part will not come out of the folded part.

本発明は、エアバッグの展開時、エアバッグが完全に展開しなくても折り込み部に収容された余り部が飛び出しやすくなるように、エアバッグの折り込みを行うことで、前記の課題を解決するものである。   The present invention solves the above-mentioned problem by folding the airbag so that the excess portion accommodated in the folded-in portion is easily popped out even when the airbag is not completely deployed when the airbag is deployed. Is.

以下、本発明を、添付図面を用いて説明する。図１〜図５は本発明のサイドエアバッグ装置の第１の例を説明する図である。   The present invention will be described below with reference to the accompanying drawings. 1-5 is a figure explaining the 1st example of the side airbag apparatus of this invention.

１１は、シートバックの、例えば、サイドドア側の側方内部に設置する、本発明のサイドエアバッグ装置である。   11 is the side airbag apparatus of this invention installed in the side inside of a seat back, for example by the side door side.

このサイドエアバッグ装置１１は、車両の前後方向よりも上下方向が長く形成され、車両の幅方向に厚みを有するエアバッグ１２と、センサーからの出力信号を受信してエアバッグ１２内にガスを噴出するインフレータ１３を備えている。そして、特に側面衝突時に、運転席に着座した乗員とサイドドアの間に、車両の前方方向にエアバッグ１２を展開させて乗員を保護する。   The side airbag device 11 is formed so that the vertical direction is longer than the longitudinal direction of the vehicle, and the airbag 12 has a thickness in the width direction of the vehicle, and receives an output signal from the sensor, and sends gas into the airbag 12. An inflator 13 for jetting is provided. And especially at the time of a side collision, between the passenger | crew who seated in the driver's seat and the side door, the airbag 12 is expand | deployed in the front direction of a vehicle, and a passenger | crew is protected.

前記エアバッグ１２は、例えば２枚の基布１２ａ，１２ｂの全周囲を縫製して袋状に形成した構成であり、シートバックの側端部のフレームと重なる基端側の内部に前記インフレータ１３を取付けている。   For example, the airbag 12 is formed into a bag shape by sewing the entire periphery of the two base fabrics 12a and 12b, and the inflator 13 is provided in the base end side overlapping the frame at the side end portion of the seat back. Is installed.

前記インフレータ１３は、例えば筒形状をなし、その外側面に設けた噴出孔から前記エアバッグ１２の内部にガスを噴出する構成である。このインフレータ１３の外側面には、固定用のスタッドボルト１３ａがその長手方向に適宜の間隔を存して例えば２本突き出しており、これらスタッドボルト１３ａを用いてシートバックの前記フレームに設置する。   The inflator 13 has a cylindrical shape, for example, and is configured to eject gas into the airbag 12 from an ejection hole provided on the outer surface thereof. For example, two stud bolts 13a for fixing protrude from the outer surface of the inflator 13 at an appropriate interval in the longitudinal direction, and are installed on the frame of the seat back using these stud bolts 13a.

次に、本発明のサイドエアバッグ装置１１を製造する際の、エアバッグ１２の折り込み手順を、図１及び図２に基づいて説明する。なお、図２はエアバッグ１２の上端部の折り込みを本発明の構成とした例である。   Next, the folding procedure of the airbag 12 when manufacturing the side airbag device 11 of the present invention will be described with reference to FIGS. 1 and 2. FIG. 2 shows an example in which folding of the upper end portion of the airbag 12 is configured according to the present invention.

エアバッグ１２を図１に示した展開した状態とする。
次に、エアバッグ１２の上端部１２ｃを、車両の前方（図１の紙面右側）から後方（図１の紙面左側）に向けて略直線状に車両の上方向に向けて傾斜させた第１の折り線１４に沿って、エアバッグ１２内に押し込むようにして折り込む（図２（ａ）参照）。 The airbag 12 is in the deployed state shown in FIG.
Next, the upper end 12c of the airbag 12 is inclined in a substantially straight line from the front of the vehicle (the right side of the drawing in FIG. 1) to the rear (the left side of the drawing in FIG. 1) in the upward direction of the vehicle. The air bag 12 is folded along the folding line 14 (see FIG. 2A).

次に、前記折り込んだ上部折り込み部１２ｄの底部１２ｅからエアバッグ１２の外方向に向けて余り部１２ｆを残すように折り込む（図２（ａ）参照）。   Next, it folds so that the surplus part 12f may be left toward the outward direction of the airbag 12 from the bottom part 12e of the said folded-up upper part 12d (refer Fig.2 (a)).

前記折り込み時、前記上部折り込み部１２ｄの底部１２ｅは、車両の前方側に位置する前方底部１２ｅａと、この前方底部１２ｅａの車両後方側端部から車両の後方側に位置する後方底部１２ｅｂを有するように折り返す（図２（ｂ）参照）。   At the time of folding, the bottom portion 12e of the upper folding portion 12d has a front bottom portion 12ea located on the front side of the vehicle and a rear bottom portion 12eb located on the rear side of the vehicle from the vehicle rear side end portion of the front bottom portion 12ea. (See FIG. 2B).

このうち、前方底部１２ｅａは、車両の後方側に向けて、例えば車両の下方向に傾斜して延びるようにする。また後方底部１２ｅｂは、車両の上方向に向けて傾斜するようにする（図２（ｂ）参照）。   Among these, the front bottom portion 12ea extends toward the rear side of the vehicle, for example, inclined downward in the vehicle. Further, the rear bottom 12eb is inclined toward the upper direction of the vehicle (see FIG. 2B).

次に、エアバッグ１２の下端部１２ｇを、車両の前方から後方に向けて略水平の第２の折り線１５に沿って、エアバッグ１２内に押し込むようにして折り込む（図２（ａ）参照）。そして、この折り込んだ下部折り込み部１２ｈの底部１２ｉからエアバッグ１２の外方向に向けて折り返す（図２（ａ）参照）。その際、前記折り返した部分１２ｊを下部折り込み部１２ｈに収容できるように、第２の折り線１５の位置を決定する。   Next, the lower end 12g of the airbag 12 is folded so as to be pushed into the airbag 12 along a substantially horizontal second folding line 15 from the front to the rear of the vehicle (see FIG. 2A). ). Then, the folded portion is folded back from the bottom portion 12i of the folded portion 12h toward the outside of the airbag 12 (see FIG. 2A). At this time, the position of the second folding line 15 is determined so that the folded portion 12j can be accommodated in the lower folding portion 12h.

次に、前記余り部１２ｆを、例えば、エアバッグ１２の車両の前後方向中心線よりも車両の後方側となるよう、前記後方底部１２ｅｂの方向に寄せて折り畳み、前記上部折り込み部１２ｄに収容する（図２（ｂ）参照）。   Next, the surplus portion 12f is folded toward the rear bottom portion 12eb so as to be on the rear side of the vehicle with respect to the vehicle front-rear direction center line of the airbag 12, for example, and accommodated in the upper folding portion 12d. (See FIG. 2 (b)).

この余り部１２ｆの折り畳みは、図２に示す例では、車両の上下方向の折り線１６ａ，１６ｂに沿って、エアバッグ１２の厚み方向に、前記前方底部１２ｅａの後端部を中心とした扇状に折り畳んで重ねたプリーツ構造としている。   In the example shown in FIG. 2, the surplus portion 12f is folded in a fan shape centered on the rear end portion of the front bottom portion 12ea in the thickness direction of the airbag 12 along the vertical folding lines 16a and 16b of the vehicle. The pleated structure is folded and folded.

最後に、前記エアバッグ１２を車両の前方側から巻き取ってインフレータ１３の取り付けた基端側以外をロール状とする（図２（ｄ）参照）。この際、前記ロール状とした巻き取り部１２ｋと基端側の間に折り返し部１２ｍを形成する（図２（ｅ）参照）。   Finally, the airbag 12 is wound from the front side of the vehicle, and the part other than the base end side to which the inflator 13 is attached is rolled (see FIG. 2 (d)). At this time, a folded portion 12m is formed between the roll-shaped winding portion 12k and the base end side (see FIG. 2 (e)).

前記本発明の場合、図３（ａ）に示すように、エアバッグ１２の外周端となる第１の折り線１４部分が、車両の前方から後方に向けて略直線状に車両の上方向に向けて傾斜させている。   In the case of the present invention, as shown in FIG. 3 (a), the first fold line 14 portion which is the outer peripheral end of the airbag 12 is substantially straight in the upward direction of the vehicle from the front to the rear of the vehicle. It is inclined toward.

従って、図３（ｂ）に示すような、前記第１の折り線１４部分を、車両の前方から後方に向けて略水平状とした場合に比べ、エアバッグ１２を車両の前方から巻いた際に、上部折り込み部１２ｄの車両の前方側（ハッチングを付した部分）がロール状に巻かれる範囲が少なくなる。   Therefore, when the airbag 12 is wound from the front of the vehicle as compared with the case where the first fold line 14 portion is substantially horizontal from the front to the rear of the vehicle as shown in FIG. In addition, the range in which the front side (hatched portion) of the upper folding portion 12d is wound in a roll shape is reduced.

このような本発明では、エアバッグ１２の展開時、図４に示すように、ロール状に巻き取ったエアバッグ１２が完全に展開しなくても上部折り込み部１２ｄに収容された余り部１２ｆが飛び出しやすくなる。   In the present invention, when the airbag 12 is deployed, as shown in FIG. 4, even if the airbag 12 wound up in a roll shape does not completely deploy, the surplus portion 12f accommodated in the upper folding portion 12d is provided. It becomes easy to jump out.

ちなみに、図３（ａ）に示した場合と、図３（ｂ）に示した場合とでは、展開したエアバッグ１２がショルダーポイントに到達するまでの時間は、図３（ａ）に示した本発明例の場合の方が１．０msec短かった。   Incidentally, in the case shown in FIG. 3A and the case shown in FIG. 3B, the time until the deployed airbag 12 reaches the shoulder point is the time shown in FIG. In the case of the inventive example, it was 1.0 msec shorter.

従って、本発明例の場合、ショルダーポイントよりも車両の前方へのエアバッグ１２の展開が速く行われることになって、エアバッグ１２が乗員とサイドドアの間にさらに入り込みやすくなるといえる。   Therefore, in the case of the present invention example, the airbag 12 is deployed faster in front of the vehicle than the shoulder point, and it can be said that the airbag 12 is more likely to enter between the occupant and the side door.

また、展開後、図３（ｂ）に示したエアバッグ１２は、前端部が乗員寄りに展開して正面を向いていないが（図５（ｂ）参照）、図３（ａ）に示したエアバッグ１２は、前端部が車両の前方に展開して正面を向いている（図５（ａ）参照）。このことから、本発明例では、エアバッグ１２を所期の方向に展開できることが分かる。なお、図５中の１７はサイドドアの模擬品を、１２ｎは基布１２ａと１２ｂの外周縫製部を示す。   Further, after deployment, the airbag 12 shown in FIG. 3 (b) is shown in FIG. 3 (a), although the front end portion is deployed toward the occupant and is not facing the front (see FIG. 5 (b)). The airbag 12 has a front end deployed in front of the vehicle and facing the front (see FIG. 5A). From this, it can be seen that the airbag 12 can be deployed in the intended direction in the present invention example. In addition, 17 in FIG. 5 shows the simulated product of a side door, 12n shows the outer periphery sewing part of the base fabrics 12a and 12b.

本発明は上記の例に限らず、各請求項に記載された技術的思想の範疇であれば、適宜実施の形態を変更しても良いことは言うまでもない。   The present invention is not limited to the above example, and it goes without saying that the embodiments may be changed as appropriate within the scope of the technical idea described in each claim.

すなわち、以上で述べたサイドエアバッグ装置は、本発明の好ましい例であって、これ以外の実施態様も、各種の方法で実施または遂行できる。特に本願明細書中に限定する主旨の記載がない限り、本発明は添付図面に示した詳細な部品の形状、大きさ、および構成配置等に制約されるものではない。また、本願明細書の中に用いられた表現および用語は説明を目的としたもので、特に限定される主旨のない限り、それに限定されるものではない。   That is, the side airbag device described above is a preferred example of the present invention, and other embodiments can be implemented or performed by various methods. In particular, the present invention is not limited to the detailed shape, size, configuration, and the like of the components shown in the accompanying drawings unless otherwise specified in the present specification. In addition, expressions and terms used in the present specification are for the purpose of explanation, and are not limited thereto unless specifically limited.

例えば、図６に示すように、余り部１２ｆを折り畳んで重ねたプリーツ構造を、インフレータ１３と重なる位置に形成してもよい。また、前記プリーツ構造は、図２，４，６に示したような一層ではなく、図７に示すように、複数層重畳したものでも良い。   For example, as shown in FIG. 6, a pleated structure in which the surplus portion 12 f is folded and overlapped may be formed at a position overlapping the inflator 13. Further, the pleated structure is not a single layer as shown in FIGS. 2, 4, and 6, but may be a multilayered structure as shown in FIG. 7.

また、図８に示したように、上部折り込み部１２ｄや下部折り込み部１２ｈへのガス導入を促すインナーチューブ１８をエアバッグ１２の基端側に設けたものでも良い。   Further, as shown in FIG. 8, an inner tube 18 that facilitates gas introduction into the upper folding part 12 d and the lower folding part 12 h may be provided on the base end side of the airbag 12.

また、最後に、エアバッグ１２を車両の前方側から巻き取ってインフレータ１３の取り付けた基端側以外をロール状とするのに代えて、蛇腹状としてもよい。   Finally, instead of rolling the airbag 12 from the front side of the vehicle and making the portion other than the base end side to which the inflator 13 is attached a roll shape, a bellows shape may be used.

以上説明した例は、何れもエアバッグ１２の上端部１２ｃの折り込みを本発明の構成としたものであるが、エアバッグ１２の下端部１２ｇの折り込みに本発明を適用してもよい。   In the examples described above, the upper end 12c of the airbag 12 is folded according to the present invention, but the present invention may be applied to the folding of the lower end 12g of the airbag 12.

また、以上説明した例は、本発明のサイドエアバッグ装置をシートバックのサイドドア側の側方内部に設置するものについてのものであるが、シートバックの隣り合うシート側の側方内部に設置するものに本発明を適用してもよい。   Moreover, although the example demonstrated above is a thing about what installs the side airbag apparatus of this invention in the side inside of the side door of a seat back, it installs in the side inside of the adjacent seat side of a seat back The present invention may be applied to what is to be done.

１１ サイドエアバッグ装置
１２ エアバッグ
１２ｃ 上端部
１２ｄ 上部折り込み部
１２ｅ 底部
１２ｅａ 前方底部
１２ｅｂ 後方底部
１２ｆ 余り部
１２ｇ 下端部
１２ｈ 下部折り込み部
１３ インフレータ
１４ 第１の折り線
１６ａ，１６ｂ 折り線 DESCRIPTION OF SYMBOLS 11 Side airbag apparatus 12 Air bag 12c Upper end part 12d Upper folding part 12e Bottom part 12ea Front bottom part 12eb Rear bottom part 12f Extra part 12g Lower end part 12h Lower folding part 13 Inflator 14 First folding line 16a, 16b Folding line

Claims (11)

シートの背もたれ部の側面部に内蔵され、車両の内側面とシートに着座した乗員の間に展開するサイドエアバッグ装置であって、
エアバッグと、
このエアバッグ内に設けられ、側面衝突時にセンサーからの出力信号を受け、折り畳み状態の前記エアバッグにガスを供給して展開させるインフレータと、
を備え、
前記エアバッグは、上端部をエアバッグ内に折り込む一方、当該折り込んだ折り込み部の底部からエアバッグの外方向に向けて折り返す余り部を有し、
前記折り込み部は、折り込んだ際にエアバッグの外周端となる折り線部分が、車両の前方から後方に向けて略直線状に車両の上方向に向けて傾斜する一方、当該折り込み部の前記底部は、車両の前方側から車両の後方側に向けて延びる前方底部と、この前方底部の車両後方側端部から車両の後方側かつ車両の上方向に向けて傾斜する後方底部を有するように形成し、
前記余り部は、前記後方底部の方向に寄せて折り畳んで前記折り込み部に収容されることを特徴とするサイドエアバッグ装置。 A side airbag device that is built in a side surface portion of a seat backrest and that is deployed between an inner surface of a vehicle and an occupant seated on the seat,
An airbag,
An inflator that is provided in the airbag, receives an output signal from the sensor at the time of a side collision, supplies gas to the airbag in a folded state, and deploys it;
With
The airbag has a surplus portion that folds in the outward direction of the airbag from the bottom of the folded portion while folding the upper end portion into the airbag,
The folding portion is configured such that a folding line portion that becomes an outer peripheral end of the airbag when folded is inclined substantially upward in a straight line from the front to the rear of the vehicle, while the bottom portion of the folding portion. Is formed so as to have a front bottom portion extending from the front side of the vehicle toward the rear side of the vehicle, and a rear bottom portion inclined from the vehicle rear side end portion of the front bottom portion toward the rear side of the vehicle and upward of the vehicle. And
The side airbag device according to claim 1, wherein the surplus portion is folded toward the rear bottom portion and folded into the folded portion. 前記折り込み部の前記前方底部は、車両の下方向に向けて傾斜して設けられていることを特徴とする請求項１に記載のサイドエアバッグ装置。   The side airbag device according to claim 1, wherein the front bottom portion of the folding portion is provided to be inclined toward a lower direction of the vehicle. シートの背もたれ部の側面部に内蔵され、車両の内側面とシートに着座した乗員の間に展開するサイドエアバッグ装置であって、
エアバッグと、
このエアバッグ内に設けられ、側面衝突時にセンサーからの出力信号を受け、折り畳み状態の前記エアバッグにガスを供給して展開させるインフレータと、
を備え、
前記エアバッグは、下端部をエアバッグ内に折り込む一方、当該折り込んだ折り込み部の底部からエアバッグの外方向に向けて折り返す余り部を有し、
前記折り込み部は、折り込んだ際にエアバッグの外周端となる折り線部分が、車両の前方から後方に向けて略直線状に車両の下方向に向けて傾斜する一方、当該折り込み部の前記底部は、車両の前方側から車両の後方側に向けて延びる前方底部と、この前方底部の車両後方側端部から車両の後方側かつ車両の下方向に向けて傾斜する後方底部を有するように形成し、
前記余り部は、前記後方底部の方向に寄せて折り畳んで前記折り込み部に収容されることを特徴とするサイドエアバッグ装置。 A side airbag device that is built in a side surface portion of a seat backrest and that is deployed between an inner surface of a vehicle and an occupant seated on the seat,
An airbag,
An inflator that is provided in the airbag, receives an output signal from the sensor at the time of a side collision, supplies gas to the airbag in a folded state, and deploys it;
With
The airbag has a surplus portion that folds in the outward direction of the airbag from the bottom of the folded portion while folding the lower end portion into the airbag,
The folding portion is configured such that a folding line portion that becomes an outer peripheral end of the airbag when folded is inclined substantially downward in a downward direction of the vehicle from the front to the rear of the vehicle, while the bottom portion of the folding portion is Is formed to have a front bottom portion extending from the front side of the vehicle toward the rear side of the vehicle, and a rear bottom portion inclined from the vehicle rear side end portion of the front bottom portion toward the rear side of the vehicle and downward of the vehicle. And
The side airbag device according to claim 1, wherein the surplus portion is folded toward the rear bottom portion and folded into the folded portion. 前記折り込み部の前記前方底部は、車両の上方向に向けて傾斜して設けられていることを特徴とする請求項１に記載のサイドエアバッグ装置。   The side airbag device according to claim 1, wherein the front bottom portion of the folding portion is provided to be inclined toward an upper direction of the vehicle. 前記余り部の前記折り畳みは、車両の上下方向の折れ線に沿ってエアバッグの厚み方向に折り畳んで重ねられたプリーツ構造を有するものであることを特徴とする請求項１〜４の何れかに記載のサイドエアバッグ装置。   5. The fold of the surplus portion has a pleat structure that is folded and overlapped in the thickness direction of the airbag along a vertical fold line of the vehicle. 6. Side airbag device. 前記プリーツ構造は、前記折り込み部の前記前方底部の後端部を中心とした扇状に折り畳んだものであることを特徴とする請求項５に記載のサイドエアバッグ装置。   6. The side airbag device according to claim 5, wherein the pleated structure is folded in a fan shape centering on a rear end portion of the front bottom portion of the folded portion. 前記プリーツ構造は、前記エアバッグの車両の前後方向中心線よりも車両の後方側にあることを特徴とする請求項５又は６に記載のサイドエアバッグ装置。   7. The side airbag device according to claim 5, wherein the pleated structure is located on a rear side of the vehicle with respect to a center line of the airbag in the front-rear direction. 8. 前記プリーツ構造は、少なくとも後端部が前記インフレータと重なる位置に設けられていることを特徴とする請求項５〜７の何れかに記載のサイドエアバッグ装置。   The side airbag device according to any one of claims 5 to 7, wherein the pleated structure is provided at a position where at least a rear end portion overlaps the inflator. 前記プリーツ構造は、車両の後方に寄せて複数層重畳された構成であることを特徴とする請求項５〜８の何れかに記載のサイドエアバッグ装置。   The side airbag device according to any one of claims 5 to 8, wherein the pleat structure has a structure in which a plurality of layers are overlapped toward the rear of the vehicle. 前記エアバッグは、前記折り込み部に前記余り部が収容された状態で、車両の前方から巻かれていることを特徴とする請求項１〜９の何れかに記載のサイドエアバッグ装置。   The side airbag device according to any one of claims 1 to 9, wherein the airbag is wound from the front of the vehicle in a state where the surplus portion is accommodated in the folding portion. サイドエアバッグ装置の製造方法であって、
折り畳む前のエアバッグの上端部又は下端部を、車両の前方から後方に向けて略直線状に車両の上方向又は下方向に向けて傾斜する折り線に沿って前記エアバッグ内に折り込み、当該折り込んだ折り込み部の底部から前記エアバッグの外方向に向けて余り部を残すように折り込んで、
前記折り込み部の前記底部が、車両の前方側から車両の後方側に向けて延びる前方底部と、この前方底部の車両後方側端部から車両の後方側かつ車両の上方向又は下方向に向けて傾斜する後方底部を有するようにして、前記後方底部の方向に前記余り部を寄せ、当該余り部を車両の上下方向の縦折れ線に沿って前記エアバッグの厚み方向にプリーツ状に折り畳んで前記折り込み部に収容し、
その後、前記折り込み部に前記余り部が収容された状態で、車両の前方からロール状又は蛇腹状に巻くことを特徴とするサイドエアバッグ装置の製造方法。 A method of manufacturing a side airbag device,
Fold the upper end or lower end of the airbag before folding into the airbag along a fold line that is inclined in a substantially straight line from the front to the rear of the vehicle in the upward or downward direction of the vehicle. Fold it so as to leave a surplus part from the bottom of the folded part into the outward direction of the airbag,
The bottom portion of the folding portion extends from the front side of the vehicle toward the rear side of the vehicle, and from the vehicle rear side end portion of the front bottom portion toward the rear side of the vehicle and upward or downward of the vehicle. The surplus portion is brought in the direction of the rear bottom portion so as to have an inclined rear bottom portion, and the surplus portion is folded in a pleat shape in the thickness direction of the airbag along a vertical folding line in the vertical direction of the vehicle. Housed in the department,
Then, the side airbag device manufacturing method, wherein the surplus portion is accommodated in the folded portion and wound in a roll shape or a bellows shape from the front of the vehicle.
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