JP6839023B2 - Curtain airbag - Google Patents
Curtain airbag Download PDFInfo
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- JP6839023B2 JP6839023B2 JP2017070369A JP2017070369A JP6839023B2 JP 6839023 B2 JP6839023 B2 JP 6839023B2 JP 2017070369 A JP2017070369 A JP 2017070369A JP 2017070369 A JP2017070369 A JP 2017070369A JP 6839023 B2 JP6839023 B2 JP 6839023B2
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- 230000001133 acceleration Effects 0.000 description 7
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Description
この発明は、カーテンエアバッグに係り、特に、自動車の側部に対向する位置に展開するカーテンエアバッグに関する。 The present invention relates to a curtain airbag, and more particularly to a curtain airbag deployed at a position facing a side portion of an automobile.
従来から、自動車の側部に対向する位置に展開するカーテンエアバッグが用いられている。このカーテンエアバッグは、例えば、自動車の側部に配置された窓部を覆うように展開して、衝突により側方へ移動する搭乗者を受け止めると共に窓部が割れた際に搭乗者が車外へ放出されることを抑制するものである。
ここで、衝突により搭乗者が側方へ急激に移動すると頭部に大きな衝撃が加わるおそれがあるため、搭乗者の頭部をカーテンエアバッグで適切に保護することが求められている。
Conventionally, a curtain airbag that is deployed at a position facing the side of an automobile has been used. This curtain airbag is deployed so as to cover a window located on the side of the automobile, for example, to catch a passenger moving to the side due to a collision, and when the window is broken, the passenger goes out of the vehicle. It suppresses the release.
Here, if the occupant suddenly moves laterally due to a collision, a large impact may be applied to the head. Therefore, it is required to appropriately protect the occupant's head with a curtain airbag.
そこで、搭乗者の頭部を適切に保護する技術として、例えば、特許文献１には、ロールオーバー時にも搭乗者の頭部が車外側へ移動することを抑えて的確に保護可能な頭部保護エアバッグ装置が提案されている。この頭部保護エアバッグ装置は、エアバッグの膨張完了時に前後に隣接する２つの縦セルの下端付近において２つの縦セルを跨ぐように補強膨張部が配置される。このため、２つの縦セルの境界部位が車外側に向かって移動する搭乗者の頭部で押圧されても補強膨張部により支持されるため、エアバッグが外側に折れ曲がることを抑制し、搭乗者の頭部を適切に保護することができる。 Therefore, as a technique for appropriately protecting the occupant's head, for example, Patent Document 1 describes head protection that can accurately protect the occupant's head by suppressing the movement of the occupant's head to the outside of the vehicle even during rollover. Airbag devices have been proposed. In this head protection airbag device, a reinforcing expansion portion is arranged so as to straddle the two vertical cells near the lower ends of the two vertically adjacent vertical cells when the expansion of the airbag is completed. Therefore, even if the boundary portion between the two vertical cells is pressed by the occupant's head moving toward the outside of the vehicle, it is supported by the reinforcing expansion portion, so that the airbag is prevented from bending outward and the occupant. Can properly protect the head of the car.
しかしながら、特許文献１の頭部保護エアバッグ装置では、エアバッグの変形を補強膨張部で抑制するため、衝突による搭乗者の衝撃を確実に吸収することが困難であった。特に、自動車が側方に衝突すると、搭乗者の頭部が急激に側方へ回転するように動かされるおそれがあり、この衝撃を吸収するようにエアバッグを変形することが困難であった。 However, in the head protection airbag device of Patent Document 1, since the deformation of the airbag is suppressed by the reinforcing and expanding portion, it is difficult to reliably absorb the impact of the occupant due to the collision. In particular, when an automobile collides sideways, the occupant's head may be suddenly moved to rotate laterally, and it is difficult to deform the airbag so as to absorb this impact.
この発明は、このような従来の問題点を解消するためになされたもので、搭乗者を車室内に留めつつ衝突による搭乗者の衝撃を確実に吸収するカーテンエアバッグを提供することを目的とする。 The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a curtain airbag that reliably absorbs the impact of a passenger due to a collision while keeping the passenger in the passenger compartment. To do.
この発明に係るカーテンエアバッグは、自動車の側部において窓部が配置された上半部に対向する位置に展開する上部エアバッグと、上部エアバッグと上下方向に接続されて側部の下半部に対向する位置に展開する下部エアバッグとを備え、上部エアバッグは、上下方向に延びると共に後部と比較して前部の容量が車幅方向に大きくなるように膨張する第１の膨張部を有し、下部エアバッグは、上下方向に延びると共に前部と比較して後部の容量が車幅方向に大きくなるように膨張する第２の膨張部を有するものである。 The curtain airbag according to the present invention includes an upper airbag that deploys at a position facing the upper half where a window is arranged on the side of an automobile, and a lower half of the side that is vertically connected to the upper airbag. A first expansion portion that includes a lower airbag that deploys at a position facing the portion, and the upper airbag extends in the vertical direction and expands so that the capacity of the front portion increases in the vehicle width direction as compared with the rear portion. The lower airbag has a second expansion portion that extends in the vertical direction and expands so that the capacity of the rear portion is larger in the vehicle width direction as compared with the front portion.
ここで、第２の膨張部は、第１の膨張部に対して後方にずれた位置に配置されることが好ましい。 Here, it is preferable that the second expanding portion is arranged at a position shifted rearward with respect to the first expanding portion.
また、第１の膨張部は上端部から下端部に向かって後方に傾斜して延びるように形成されると共に第２の膨張部は上端部から下端部に向かって後方に傾斜して延びるように形成され、第１の膨張部の下端部と第２の膨張部の上端部が互いに接続されていることが好ましい。 Further, the first expanding portion is formed so as to extend from the upper end portion toward the lower end portion so as to be inclined rearward, and the second expanding portion is formed so as to extend so as to be inclined rearward from the upper end portion toward the lower end portion. It is preferable that the lower end portion of the first expansion portion and the upper end portion of the second expansion portion are connected to each other.
また、第１の膨張部は、後部と比較して前部の容量が車内側に大きくなるように形成することができる。
また、第２の膨張部は、前部と比較して後部の容量が車外側に大きくなるように形成することができる。
Further, the first expansion portion can be formed so that the capacity of the front portion is larger inside the vehicle than that of the rear portion.
Further, the second expansion portion can be formed so that the capacity of the rear portion is larger than that of the front portion on the outer side of the vehicle.
この発明に係るカーテンエアバッグは、自動車の側部において窓部が配置された上半部に対向して配置される上部エアバッグと、側部の下半部に対向して配置され、上部エアバッグと上下方向に接続された下部エアバッグとを備え、上部エアバッグは、上下方向に延びると共に後部から前部に向かって容量が車幅方向に徐々に大きくなるように膨張する膨張部を有するものである。 The curtain airbag according to the present invention has an upper airbag arranged facing the upper half where the window portion is arranged on the side portion of the automobile and an upper airbag arranged facing the lower half portion of the side portion. It comprises a bag and a lower airbag connected in the vertical direction, and the upper airbag has an inflatable portion that extends in the vertical direction and expands from the rear to the front so that the capacity gradually increases in the vehicle width direction. It is a thing.
この発明によれば、上部エアバッグは上下方向に延びると共に後部と比較して前部の容量が車幅方向に大きくなるように膨張する第１の膨張部を有すると共に、下部エアバッグは上下方向に延びると共に前部と比較して後部の容量が車幅方向に大きくなるように膨張する第２の膨張部を有するので、搭乗者を車室内に留めつつ衝突による搭乗者の衝撃を確実に吸収するカーテンエアバッグを提供することが可能となる。 According to the present invention, the upper airbag has a first inflatable portion that extends in the vertical direction and expands so that the capacity of the front portion is larger in the vehicle width direction as compared with the rear portion, and the lower airbag is in the vertical direction. Since it has a second inflatable part that extends to the front and expands so that the capacity of the rear part is larger in the vehicle width direction than the front part, it reliably absorbs the impact of the occupant due to a collision while keeping the occupant in the passenger compartment. It is possible to provide a curtain airbag to be used.
以下、この発明の実施の形態を添付図面に基づいて説明する。
実施の形態１
図１に、この発明の実施の形態１に係るカーテンエアバッグを備えたエアバッグ装置の構成を示す。このエアバッグ装置は、カーテンエアバッグ１と、カーテンエアバッグ１を収納する収納部２と、収納部２に配置されたインフレータ３と、インフレータ３に接続されたエアバッグ制御部４とを有する。
なお、エアバッグ装置が配置される自動車は、車体Ｍ１と、車内に配置された座席Ｍ２とを有し、車体Ｍ１の側部Ｍ３にドア部Ｍ４が配置されている。また、ドア部Ｍ４の上半部Ｍ５ａに窓部Ｍ６が配置されると共にドア部Ｍ４の下半部Ｍ５ｂにトリム部Ｍ７が配置されている。
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
Embodiment 1
FIG. 1 shows a configuration of an airbag device including a curtain airbag according to the first embodiment of the present invention. This airbag device includes a curtain airbag 1, a storage unit 2 for storing the curtain airbag 1, an inflator 3 arranged in the storage unit 2, and an airbag control unit 4 connected to the inflator 3.
The automobile in which the airbag device is arranged has a vehicle body M1 and a seat M2 arranged in the vehicle, and a door portion M4 is arranged on a side portion M3 of the vehicle body M1. Further, the window portion M6 is arranged in the upper half portion M5a of the door portion M4, and the trim portion M7 is arranged in the lower half portion M5b of the door portion M4.
カーテンエアバッグ１は、自動車の座席Ｍ２に座る搭乗者Ｄを受け止めて衝突の衝撃から保護するもので、収納部２に収納されている。
収納部２は、自動車の側部Ｍ３の上縁部近傍に配置されている。この収納部２は、自動車の前後方向に延びて側部Ｍ３の前部から後部にわたるように形成されている。
The curtain airbag 1 receives the passenger D sitting on the seat M2 of the automobile and protects it from the impact of a collision, and is housed in the storage unit 2.
The storage portion 2 is arranged near the upper edge portion of the side portion M3 of the automobile. The storage portion 2 is formed so as to extend in the front-rear direction of the automobile and extend from the front portion to the rear portion of the side portion M3.
インフレータ３は、カーテンエアバッグ１内に展開ガスを注入してカーテンエアバッグ１を展開させるものである。
エアバッグ制御部４は、インフレータ３を駆動してカーテンエアバッグ１の展開を制御するものである。
The inflator 3 injects a deploying gas into the curtain airbag 1 to deploy the curtain airbag 1.
The airbag control unit 4 drives the inflator 3 to control the deployment of the curtain airbag 1.
次に、カーテンエアバッグ１の構成について詳細に説明する。
図２に示すように、カーテンエアバッグ１は、自動車の側部Ｍ３を覆うように展開するもので、上部エアバッグ５と、下部エアバッグ６とを有する。
上部エアバッグ５は、自動車の側部Ｍ３において窓部Ｍ６が配置された上半部Ｍ５ａに対向する位置に展開する。上部エアバッグ５は、自動車の斜め側方への衝突に対応して座席Ｍ２に座る搭乗者Ｄの側方に配置されて自動車の床面に直交する上下方向に延びると共に車幅方向に厚みが大きくなるように膨張する膨張部７を有する。膨張部７は、上端部が窓部Ｍ６の上縁部近傍に位置すると共に下端部が窓部Ｍ６の下縁部近傍に位置するように形成されている。
Next, the configuration of the curtain airbag 1 will be described in detail.
As shown in FIG. 2, the curtain airbag 1 is deployed so as to cover the side portion M3 of the automobile, and has an upper airbag 5 and a lower airbag 6.
The upper airbag 5 is deployed at a position facing the upper half portion M5a where the window portion M6 is arranged on the side portion M3 of the automobile. The upper airbag 5 is arranged on the side of the passenger D sitting in the seat M2 in response to a collision on the diagonal side of the automobile, extends in the vertical direction orthogonal to the floor surface of the automobile, and has a thickness in the vehicle width direction. It has an expansion portion 7 that expands so as to increase in size. The expansion portion 7 is formed so that the upper end portion is located near the upper edge portion of the window portion M6 and the lower end portion is located near the lower edge portion of the window portion M6.
下部エアバッグ６は、上部エアバッグ５と上下方向に一体に接続されて自動車の側部Ｍ３の下半部Ｍ５ｂに対向する位置に展開する。下部エアバッグ６は、座席Ｍ６に座る搭乗者Ｄの側方に配置されて自動車の床面に直交する上下方向に延びると共に車幅方向に厚みが大きくなるように膨張する膨張部８を有する。膨張部８は、上部エアバッグ５の膨張部７に対して後方にずれた位置に配置され、上端部がトリム部Ｍ７の上縁部近傍に位置すると共に下端部がトリム部Ｍ７の中間部近傍に位置するように形成されている。ここで、膨張部７は搭乗者Ｄの前側に配置されると共に膨張部８は搭乗者Ｄの真横に配置されている。 The lower airbag 6 is integrally connected to the upper airbag 5 in the vertical direction and is deployed at a position facing the lower half M5b of the side portion M3 of the automobile. The lower airbag 6 has an expansion portion 8 which is arranged on the side of the passenger D who sits on the seat M6 and extends in the vertical direction orthogonal to the floor surface of the automobile and expands so as to increase in thickness in the vehicle width direction. The expansion portion 8 is arranged at a position shifted rearward with respect to the expansion portion 7 of the upper airbag 5, the upper end portion is located near the upper edge portion of the trim portion M7, and the lower end portion is near the middle portion of the trim portion M7. It is formed so as to be located in. Here, the expansion portion 7 is arranged on the front side of the passenger D, and the expansion portion 8 is arranged right next to the passenger D.
図３に示すように、膨張部７は、車内側において後部から前部に向かって容量が車幅方向に徐々に大きくなるように形成された内壁部７ａと、車外側において後部から前部に向かって容量が車幅方向に徐々に大きくなるように形成された外壁部７ｂとを有する。すなわち、膨張部７は、車内側および車外側において後部から前部に向かって容量が車幅方向に徐々に大きくなるように形成されている。 As shown in FIG. 3, the expansion portion 7 includes an inner wall portion 7a formed so that the capacity gradually increases in the vehicle width direction from the rear portion to the front portion on the inside of the vehicle, and from the rear portion to the front portion on the outside of the vehicle. It has an outer wall portion 7b formed so that the capacity gradually increases in the vehicle width direction toward the vehicle. That is, the expansion portion 7 is formed so that the capacity gradually increases in the vehicle width direction from the rear portion to the front portion on the inside and outside of the vehicle.
また、膨張部８は、車内側において前部から後部に向かって容量が車幅方向に徐々に大きくなるように形成された内壁部８ａと、車外側において前部から後部に向かって容量が車幅方向に徐々に大きくなるように形成された外壁部８ｂとを有する。すなわち、膨張部８は、車内側および車外側において前部から後部に向かって容量が車幅方向に徐々に大きくなるように形成されている。 Further, the expansion portion 8 has an inner wall portion 8a formed so that the capacity gradually increases from the front portion to the rear portion on the inside of the vehicle and a capacity of the vehicle from the front portion to the rear portion on the outside of the vehicle. It has an outer wall portion 8b formed so as to gradually increase in the width direction. That is, the expansion portion 8 is formed so that the capacity gradually increases in the vehicle width direction from the front portion to the rear portion on the inside and outside of the vehicle.
次に、この実施の形態の動作について説明する。
まず、図１に示すように、カーテンエアバッグ１が収納部２に収納された状態で自動車が運転される。ここで、自動車が斜め側方に衝突すると、図示しない衝突検出部に衝突の衝撃が入力されて、その衝突信号がエアバッグ制御部４に入力される。エアバッグ制御部４は、衝突信号が入力されると、インフレータ３を駆動してカーテンエアバッグ１内に展開ガスを注入する。これにより、カーテンエアバッグ１は、収納部２から下方に向けて展開する。
Next, the operation of this embodiment will be described.
First, as shown in FIG. 1, the automobile is driven with the curtain airbag 1 stored in the storage unit 2. Here, when the automobile collides diagonally sideways, the impact of the collision is input to a collision detection unit (not shown), and the collision signal is input to the airbag control unit 4. When the collision signal is input, the airbag control unit 4 drives the inflator 3 to inject the deploying gas into the curtain airbag 1. As a result, the curtain airbag 1 is deployed downward from the storage unit 2.
図２に示すように、カーテンエアバッグ１は、自動車の側部Ｍ３を覆うように展開される。この時、カーテンエアバッグ１は、上部エアバッグ５が窓部Ｍ６を上縁部から下縁部まで覆うと共に下部エアバッグ６がトリム部Ｍ７の上縁部から中間部までを覆うように展開する。これにより、上部エアバッグ５に設けられた膨張部７が窓部Ｍ６の上縁部近傍から下縁部近傍まで延びるように配置され、下部エアバッグ６に設けられた膨張部８がトリム部Ｍ７の上縁部近傍から中間部近傍まで延びるように配置される。
このようにして、カーテンエアバッグ１が展開されて、衝突の衝撃により斜め前方に移動する搭乗者Ｄの頭部がカーテンエアバッグ１の膨張部７により受け止められる。
As shown in FIG. 2, the curtain airbag 1 is deployed so as to cover the side portion M3 of the automobile. At this time, the curtain airbag 1 is deployed so that the upper airbag 5 covers the window portion M6 from the upper edge portion to the lower edge portion and the lower airbag 6 covers the trim portion M7 from the upper edge portion to the intermediate portion. .. As a result, the expansion portion 7 provided in the upper airbag 5 is arranged so as to extend from the vicinity of the upper edge portion to the vicinity of the lower edge portion of the window portion M6, and the expansion portion 8 provided in the lower airbag 6 is arranged in the trim portion M7. It is arranged so as to extend from the vicinity of the upper edge to the vicinity of the middle portion.
In this way, the curtain airbag 1 is deployed, and the head of the passenger D, which moves diagonally forward due to the impact of the collision, is received by the expansion portion 7 of the curtain airbag 1.
ここで、搭乗者Ｄの頭部は、衝突の衝撃により、衝突が生じた車外方向を向くように回転される。この時、搭乗者Ｄの頭部は、急激に車外方向へ動かされるため、頭部が大きく損傷されるおそれがある。
そこで、膨張部７の内壁部７ａが、図４（ａ）に示すように、後部と比較して前部の容量が車内側に大きくなるように形成されている。これにより、内壁部７ａは、搭乗者Ｄの頭部を受け止めるときに、図４（ｂ）に示すように、内壁部７ａの前部側で頭部の前面を車内側に押し戻すように変形、すなわち内壁部７ａの前部が車内側に移動するように変形する。このため、搭乗者Ｄの頭部が車外側に大きな加速度で回転することを抑制することができ、頭部への損傷を低減することができる。
また、膨張部７の内壁部７ａは、後部から前部に向かって容量が車幅方向に徐々に大きくなるように形成されている。これにより、内壁部７ａは、頭部の前面をスムーズに車内側に押し戻すように変形するため、頭部が車外側に回転する加速度を大きく抑制することができる。
Here, the head of the passenger D is rotated by the impact of the collision so as to face the outside of the vehicle where the collision occurred. At this time, since the head of the passenger D is suddenly moved toward the outside of the vehicle, the head may be seriously damaged.
Therefore, as shown in FIG. 4A, the inner wall portion 7a of the expansion portion 7 is formed so that the capacity of the front portion is larger than that of the rear portion. As a result, when the inner wall portion 7a receives the head of the passenger D, as shown in FIG. 4B, the inner wall portion 7a is deformed so as to push the front surface of the head back to the inside of the vehicle on the front side of the inner wall portion 7a. That is, the front portion of the inner wall portion 7a is deformed so as to move inside the vehicle. Therefore, it is possible to prevent the head of the passenger D from rotating to the outside of the vehicle at a large acceleration, and it is possible to reduce damage to the head.
Further, the inner wall portion 7a of the expansion portion 7 is formed so that the capacity gradually increases in the vehicle width direction from the rear portion to the front portion. As a result, the inner wall portion 7a is deformed so as to smoothly push back the front surface of the head to the inside of the vehicle, so that the acceleration of the head rotating to the outside of the vehicle can be greatly suppressed.
また、膨張部７の外壁部７ｂは、後部と比較して前部の容量が車外側に大きくなるように形成されている。これにより、内壁部７ａの変形が促進されるため、頭部が車外側に回転する加速度をより大きく抑制することができる。また、膨張部７の外壁部７ｂは、後部から前部に向かって容量が車幅方向に徐々に大きくなるように形成されている。これにより、内壁部７ａがスムーズに変形するため、頭部が車外側に回転する加速度をよりスムーズに抑制することができる。 Further, the outer wall portion 7b of the expansion portion 7 is formed so that the capacity of the front portion is larger than that of the rear portion on the outer side of the vehicle. As a result, the deformation of the inner wall portion 7a is promoted, so that the acceleration at which the head rotates to the outside of the vehicle can be further suppressed. Further, the outer wall portion 7b of the expansion portion 7 is formed so that the capacity gradually increases in the vehicle width direction from the rear portion to the front portion. As a result, the inner wall portion 7a is smoothly deformed, so that the acceleration of the head rotating to the outside of the vehicle can be suppressed more smoothly.
一方、下部エアバッグ６の膨張部８が、図２に示すように、自動車のトリム部Ｍ７に沿って上下方向に延びるように配置される。これにより、膨張部８が支柱のようにカーテンエアバッグ１を支持し、搭乗者Ｄを膨張部７で受け止めた際に上部エアバッグ５が窓部Ｍ６から車外へ出ることを抑制することができる。
また、膨張部８の外壁部８ｂは、図４（ａ）に示すように、前部と比較して後部の容量が車外側に大きくなるように形成されている。これにより、膨張部７の変形が促進されるため、膨張部７で受け止められた頭部が車外側に回転する加速度をより大きく抑制することができる。また、膨張部８の外壁部８ｂは、前部から後部に向かって容量が車幅方向に徐々に大きくなるように形成されているため、膨張部７をスムーズに変形させることができる。
On the other hand, as shown in FIG. 2, the expansion portion 8 of the lower airbag 6 is arranged so as to extend in the vertical direction along the trim portion M7 of the automobile. As a result, when the expansion portion 8 supports the curtain airbag 1 like a support column and the passenger D is received by the expansion portion 7, it is possible to prevent the upper airbag 5 from coming out of the vehicle through the window portion M6. ..
Further, as shown in FIG. 4A, the outer wall portion 8b of the expansion portion 8 is formed so that the capacity of the rear portion is larger than that of the front portion on the outer side of the vehicle. As a result, the deformation of the expanding portion 7 is promoted, so that the acceleration at which the head received by the expanding portion 7 rotates to the outside of the vehicle can be further suppressed. Further, since the outer wall portion 8b of the expansion portion 8 is formed so that the capacity gradually increases in the vehicle width direction from the front portion to the rear portion, the expansion portion 7 can be smoothly deformed.
また、膨張部８の内壁部８ａは、前部と比較して後部の容量が車内側に大きくなるように形成されているため、膨張部７の変形を促進させることができる。また、膨張部８の内壁部８ａは、前部から後部に向かって容量が車幅方向に徐々に大きくなるように形成されているため、膨張部７をスムーズに変形させることができる。
さらに、膨張部８は、膨張部７に対して後方にずれた位置、すなわち上下方向に重ならない位置に配置されている。このため、膨張部７で搭乗者Ｄを受け止めた際に入力される斜め前方に向かう衝撃に対して、膨張部７をスムーズに変形させることができ、頭部が車外側に回転する加速度をよりスムーズに抑制することができる。
Further, since the inner wall portion 8a of the expansion portion 8 is formed so that the capacity of the rear portion is larger than that of the front portion inside the vehicle, the deformation of the expansion portion 7 can be promoted. Further, since the inner wall portion 8a of the expansion portion 8 is formed so that the capacity gradually increases in the vehicle width direction from the front portion to the rear portion, the expansion portion 7 can be smoothly deformed.
Further, the expansion portion 8 is arranged at a position shifted rearward with respect to the expansion portion 7, that is, a position where the expansion portion 8 does not overlap in the vertical direction. Therefore, the inflatable portion 7 can be smoothly deformed in response to the diagonally forward impact input when the inflatable portion 7 receives the passenger D, and the acceleration at which the head rotates to the outside of the vehicle is further increased. It can be suppressed smoothly.
ここで、膨張部８は、図５に示すように、子供などの小柄な搭乗者Ｄに対応して配置することができる。これにより、自動車が衝突した際に小柄な搭乗者Ｄを膨張部８で受け止めることができ、搭乗者Ｄの体格にかかわらずカーテンエアバッグ１で受け止めることができる。 Here, as shown in FIG. 5, the expansion portion 8 can be arranged corresponding to a small passenger D such as a child. As a result, when the automobile collides, the small passenger D can be received by the expansion unit 8, and can be received by the curtain airbag 1 regardless of the physique of the passenger D.
本実施の形態によれば、後部と比較して前部の容量が車幅方向に大きくなるように膨張部７が上部エアバッグ５に形成されると共に前部と比較して後部の容量が車幅方向に大きくなるように形成された膨張部８が下部エアバッグ６に形成されるため、上部エアバッグ５を膨張部８により最低限の容量で支持しつつ膨張部７の変形を促進することができ、搭乗者Ｄを車室内に留めつつ衝突による搭乗者Ｄの衝撃を確実に吸収することができる。 According to the present embodiment, the expansion portion 7 is formed in the upper airbag 5 so that the capacity of the front portion is larger in the vehicle width direction as compared with the rear portion, and the capacity of the rear portion is larger than that of the front portion. Since the expansion portion 8 formed so as to increase in the width direction is formed in the lower airbag 6, the deformation of the expansion portion 7 is promoted while the upper airbag 5 is supported by the expansion portion 8 with the minimum capacity. This makes it possible to reliably absorb the impact of the passenger D due to the collision while keeping the passenger D in the passenger compartment.
実施の形態２
実施の形態１では、上部エアバッグ５の膨張部７と下部エアバッグ６の膨張部８は、自動車の床面に直交する上下方向に延びるように形成されたが、上下方向に延びるように形成されていればよく、自動車の床面に直交する方向に限られるものではない。
例えば、図６に示すように、実施の形態１において、上部エアバッグ５に換えて上部エアバッグ２１を配置すると共に下部エアバッグ６に換えて下部エアバッグ２２を配置することができる。
Embodiment 2
In the first embodiment, the expansion portion 7 of the upper airbag 5 and the expansion portion 8 of the lower airbag 6 are formed so as to extend in the vertical direction orthogonal to the floor surface of the automobile, but are formed so as to extend in the vertical direction. It is not limited to the direction orthogonal to the floor surface of the automobile.
For example, as shown in FIG. 6, in the first embodiment, the upper airbag 21 can be arranged in place of the upper airbag 5, and the lower airbag 22 can be arranged in place of the lower airbag 6.
上部エアバッグ２１は、上端部から下端部に向かって後方に傾斜して延びるように形成された膨張部２３を有する。膨張部２３は、実施の形態１と同様に、車内側において後部から前部に向かって容量が車幅方向に徐々に大きくなるように形成された内壁部と、車外側において後部から前部に向かって容量が車幅方向に徐々に大きくなるように形成された外壁部とを有する。 The upper airbag 21 has an inflated portion 23 formed so as to incline rearward from the upper end portion toward the lower end portion. Similar to the first embodiment, the expansion portion 23 has an inner wall portion formed so that the capacity gradually increases in the vehicle width direction from the rear portion to the front portion on the inside of the vehicle, and the expansion portion 23 from the rear portion to the front portion on the outside of the vehicle. It has an outer wall portion formed so that the capacity gradually increases in the vehicle width direction toward the vehicle.
下部エアバッグ２２は、上端部から下端部に向かって後方に傾斜して延びるように形成された膨張部２４を有する。膨張部２４は、実施の形態１と同様に、車内側において前部から後部に向かって容量が車幅方向に徐々に大きくなるように形成された内壁部と、車外側において前部から後部に向かって容量が車幅方向に徐々に大きくなるように形成された外壁部とを有する。 The lower airbag 22 has an inflated portion 24 formed so as to incline rearward from the upper end portion toward the lower end portion. Similar to the first embodiment, the expansion portion 24 has an inner wall portion formed so that the capacity gradually increases in the vehicle width direction from the front portion to the rear portion on the inside of the vehicle, and the expansion portion 24 from the front portion to the rear portion on the outside of the vehicle. It has an outer wall portion formed so that the capacity gradually increases in the vehicle width direction toward the vehicle.
ここで、膨張部２３の下端部と膨張部２４の上端部は互いに一体に接続されている。すなわち、膨張部２３および２４は、上端部から下端部に向かって後方に直線状に傾斜して延びるように形成されている。 Here, the lower end of the expansion portion 23 and the upper end of the expansion portion 24 are integrally connected to each other. That is, the expansion portions 23 and 24 are formed so as to extend linearly inclined rearward from the upper end portion toward the lower end portion.
本実施の形態によれば、膨張部２３および２４が上端部から下端部に向かって後方に傾斜して延びるように形成されると共に膨張部２３の下端部と膨張部２４の上端部が互いに接続されるため、斜め前方に移動する搭乗者Ｄの頭部を膨張部２３で受け止めたときに、膨張部２３をスムーズに変形させることができ、頭部が車外側に回転する加速度をよりスムーズに抑制することができる。また、膨張部２３および２４を大柄な搭乗者Ｄから小柄な搭乗者Ｄまで順次対応させることができ、搭乗者Ｄを体格にかかわらずカーテンエアバッグ１で確実に受け止めることができる。 According to the present embodiment, the expansion portions 23 and 24 are formed so as to extend from the upper end portion toward the lower end portion so as to be inclined rearward, and the lower end portion of the expansion portion 23 and the upper end portion of the expansion portion 24 are connected to each other. Therefore, when the head of the passenger D moving diagonally forward is received by the expansion portion 23, the expansion portion 23 can be smoothly deformed, and the acceleration of the head rotating to the outside of the vehicle becomes smoother. It can be suppressed. Further, the expansion portions 23 and 24 can be sequentially supported from the large passenger D to the small passenger D, and the passenger D can be reliably received by the curtain airbag 1 regardless of the physique.
実施の形態３
実施の形態１および２では、下部エアバッグの膨張部が、上部エアバッグの膨張部に対して後方にずれた位置に配置されたが、前後方向に同じ位置に配置することもできる。
例えば、図７に示すように、実施の形態１において、膨張部８に換えて膨張部３１を配置することができる。
Embodiment 3
In the first and second embodiments, the inflated portion of the lower airbag is arranged at a position shifted rearward with respect to the inflated portion of the upper airbag, but it can also be arranged at the same position in the front-rear direction.
For example, as shown in FIG. 7, in the first embodiment, the expansion portion 31 can be arranged instead of the expansion portion 8.
膨張部３１は、上部エアバッグ５の膨張部７に対して前後方向において重なる位置、具体的には膨張部３１の前部が膨張部７の前部と前後方向に重なる位置に配置されている。なお、膨張部３１は、実施の形態１と同様に、自動車の床面に直交する上下方向に延びるように形成されている。また、膨張部３１は、車内側において前部から後部に向かって容量が車幅方向に徐々に大きくなるように形成された内壁部と、車外側において前部から後部に向かって容量が車幅方向に徐々に大きくなるように形成された外壁部とを有する。 The expansion portion 31 is arranged at a position where it overlaps the expansion portion 7 of the upper airbag 5 in the front-rear direction, specifically, a position where the front portion of the expansion portion 31 overlaps the front portion of the expansion portion 7 in the front-rear direction. .. The expansion portion 31 is formed so as to extend in the vertical direction orthogonal to the floor surface of the automobile, as in the first embodiment. Further, the expansion portion 31 has an inner wall portion formed so that the capacity gradually increases in the vehicle width direction from the front portion to the rear portion on the inside of the vehicle, and a vehicle width on the outside of the vehicle from the front portion to the rear portion. It has an outer wall portion formed so as to gradually increase in the direction.
本実施の形態によれば、膨張部３１が上部エアバッグ５の膨張部７に対して前後方向において重なる位置に配置されているため、膨張部３１でカーテンエアバッグ１を強力に支持することができ、搭乗者Ｄを受け止めた際に上部エアバッグ５が窓部Ｍ６から車外へ出ることを抑制することができる。 According to the present embodiment, since the expansion portion 31 is arranged at a position where the expansion portion 31 overlaps the expansion portion 7 of the upper airbag 5 in the front-rear direction, the expansion portion 31 can strongly support the curtain airbag 1. Therefore, it is possible to prevent the upper airbag 5 from coming out of the vehicle through the window portion M6 when the passenger D is received.
なお、上記の実施の形態１〜３では、上部エアバッグと下部エアバッグは、それぞれ、内壁部と外壁部において容量が大きくなるように膨張部が形成されたが、容量が車幅方向に大きくなるように膨張部が形成されていればよく、この形状に限られるものではない。
例えば、上部エアバッグは内壁部のみの容量が車幅方向に大きくなるように膨張部を形成すると共に、下部エアバッグは外壁部のみの容量が車幅方向に大きくなるように膨張部を形成することができる。
In the above-described first to third embodiments, the upper airbag and the lower airbag have expansion portions formed so that the capacities increase in the inner wall portion and the outer wall portion, respectively, but the capacities increase in the vehicle width direction. It suffices if the expansion portion is formed so as to be, and the shape is not limited to this.
For example, the upper airbag forms an expansion portion so that the capacity of only the inner wall portion increases in the vehicle width direction, and the lower airbag forms an expansion portion so that the capacity of only the outer wall portion increases in the vehicle width direction. be able to.
また、上記の実施の形態１〜３では、上部エアバッグの膨張部は、後部から前部に向かって容量が車幅方向に徐々に大きくなるように形成されたが、後部と比較して前部の容量が車幅方向に大きくなるように形成されていればよく、この形状に限られるものではない。
同様に、上記の実施の形態１〜３では、下部エアバッグの膨張部は、前部から後部に向かって容量が車幅方向に徐々に大きくなるように形成されたが、前部と比較して後部の容量が車幅方向に大きくなるように形成されていればよく、この形状に限られるものではない。
例えば、上部エアバッグの膨張部と下部エアバッグの膨張部は、容量が段階的に変わるように形成することができる。
Further, in the above-described first to third embodiments, the expansion portion of the upper airbag is formed so that the capacity gradually increases in the vehicle width direction from the rear portion to the front portion, but the front portion is compared with the rear portion. The capacity of the portion may be formed so as to increase in the vehicle width direction, and is not limited to this shape.
Similarly, in the above-described first to third embodiments, the inflated portion of the lower airbag is formed so that the capacity gradually increases in the vehicle width direction from the front portion to the rear portion, but is compared with the front portion. It suffices if the rear portion is formed so that the capacity increases in the vehicle width direction, and the shape is not limited to this shape.
For example, the inflated portion of the upper airbag and the inflated portion of the lower airbag can be formed so that the capacities change stepwise.
１ カーテンエアバッグ、２ 収納部、３ インフレータ、４ エアバッグ制御部、５，２１ 上部エアバッグ、６，２２ 下部エアバッグ、７，２３ 上部エアバッグの膨張部、７ａ 内壁部、７ｂ 外壁部、８，２４，３１ 下部エアバッグの膨張部、８ａ 内壁部、８ｂ 外壁部、Ｍ１ 車体、Ｍ２ 座席、Ｍ３ 自動車の側部、Ｍ４ ドア部、Ｍ５ａ 上半部、Ｍ５ｂ 下半部、Ｍ６ 窓部、Ｍ７ トリム部、Ｄ 搭乗者。 1 Curtain airbag, 2 storage, 3 inflator, 4 airbag control, 5,21 upper airbag, 6,22 lower airbag, 7,23 upper airbag inflator, 7a inner wall, 7b outer wall, 8, 24, 31 Lower airbag expansion, 8a inner wall, 8b outer wall, M1 body, M2 seat, M3 car side, M4 door, M5a upper half, M5b lower half, M6 window, M7 trim section, D passenger.
Claims (5)
前記上部エアバッグと上下方向に接続されて前記側部の下半部に対向する位置に展開する下部エアバッグとを備え、
前記上部エアバッグは、上下方向に延びると共に後部と比較して前部の容量が車幅方向に大きくなるように膨張する第１の膨張部を有し、
前記下部エアバッグは、上下方向に延びると共に前部と比較して後部の容量が車幅方向に大きくなるように膨張する第２の膨張部を有するカーテンエアバッグ。 An upper airbag that deploys at a position facing the upper half where the window is located on the side of the car,
It is provided with a lower airbag that is vertically connected to the upper airbag and is deployed at a position facing the lower half of the side portion.
The upper airbag has a first expansion portion that extends in the vertical direction and expands so that the capacity of the front portion increases in the vehicle width direction as compared with the rear portion.
The lower airbag is a curtain airbag having a second expanding portion that extends in the vertical direction and expands so that the capacity of the rear portion is larger in the vehicle width direction as compared with the front portion.
The curtain airbag according to any one of claims 1 to 4, wherein the second expanding portion is formed so that the capacity of the rear portion is larger than that of the front portion on the outer side of the vehicle.
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