JP2019135114A - Side airbag device - Google Patents

Side airbag device Download PDF

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JP2019135114A
JP2019135114A JP2018018109A JP2018018109A JP2019135114A JP 2019135114 A JP2019135114 A JP 2019135114A JP 2018018109 A JP2018018109 A JP 2018018109A JP 2018018109 A JP2018018109 A JP 2018018109A JP 2019135114 A JP2019135114 A JP 2019135114A
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convex portion
airbag
vehicle
protruding part
side protruding
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鈴木 裕之
Hiroyuki Suzuki
裕之 鈴木
恭規 石山
Yasunori Ishiyama
恭規 石山
孝彰 二井
Takaaki Nii
孝彰 二井
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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Abstract

To improve protecting performance of an occupant who is normally seated at the time of side collision of a vehicle, and reduce input to an occupant who is lying down on a seat, when an airbag is expanded in a situation other than a situation of side collision.SOLUTION: A lower part of an airbag 2 provided in a side airbag device 1 is formed in a fork-shape in which a front-side protruding part 21 and a rear-side protruding part 22 are parallely arranged in a longitudinal direction of a vehicle. The side airbag device 1 is provided with: an outer planar body 25 attached to an outer surface outside the vehicle of either one of the front-side protruding part 21 and the rear-side protruding part 22; an inner planar body 26 attached to an outer surface inside the vehicle of the other of the front-side protruding part 21 and the rear-side protruding part 22; and a linear body 27 that joins the outer planar body 25 to the inner planar body 26, between the front-side protruding part 21 and the rear-side protruding part 22 and makes the front-side protruding part 21 and the rear-side protruding part 22 to approach each other. When the linear body 27 is cut using a difference between a dimension in a vehicle width direction of the front-side protruding part 21 and a dimension in the vehicle width direction of the rear-side protruding part 22, the front-side protruding part 21 and the rear-side protruding part 22 are separated from each other.SELECTED DRAWING: Figure 2

Description

本発明は、車両の乗員の側方に展開されるエアバッグを備えたサイドエアバッグ装置に関する。   The present invention relates to a side airbag device including an airbag that is deployed to the side of a vehicle occupant.

従来、車両に搭載されるエアバッグ装置の一つとして、乗員とサイドドアとの間にサイドエアバッグを展開させるサイドエアバッグ装置が知られている。サイドエアバッグは、車両衝突等の際にサイドドアに沿って瞬時に膨張し、乗員を保護するように機能するものであり、その形状に特徴を加えることによって、乗員の保護性能をより向上させることが検討されている。また、通常の着座状態の乗員(正規着座乗員)を適切に拘束しつつ、通常の着座位置にない不測の姿勢をとっている乗員(いわゆるアウトオブポジションの乗員)に対するエアバッグによる入力を低減するためのサイドエアバッグの構成も提案されている(例えば特許文献1参照)。   2. Description of the Related Art Conventionally, a side airbag device that deploys a side airbag between an occupant and a side door is known as one of airbag devices mounted on a vehicle. The side airbag functions to protect the occupant by inflating instantaneously along the side door in the event of a vehicle collision or the like, and by adding features to its shape, the occupant's protection performance is further improved. It is being considered. In addition, while appropriately restraining a normal seated occupant (regular seated occupant), input by an airbag to an occupant taking an unexpected posture that is not in a normal seating position (a so-called out-of-position occupant) is reduced. The structure of the side airbag for this is also proposed (for example, refer patent document 1).

特開2017−13664号公報JP 2017-13664 A

一般的に、サイドエアバッグ装置は、側突時に衝撃が入力された側のサイドエアバッグが展開するように構成されるが、側突以外の衝突(例えばオフセット衝突やスモールオーバーラップ衝突等)であっても、左右方向の加速度(横G)が検出されるとサイドエアバッグが展開する可能性がある。また、サイドドアの内圧の変化を検知することでサイドエアバッグを展開させる装置の場合には、例えば、ショッピングカート等が勢いよくサイドドアに衝突するとサイドエアバッグが展開する可能性がある。このように、側突以外の状況でもサイドエアバッグが展開する可能性がある。   In general, the side airbag device is configured so that the side airbag on the side on which the impact is input at the time of a side collision is deployed, but in a collision other than the side collision (for example, an offset collision or a small overlap collision). Even in such a case, there is a possibility that the side airbag is deployed when acceleration in the left-right direction (lateral G) is detected. Further, in the case of a device that deploys a side airbag by detecting a change in the internal pressure of the side door, for example, when a shopping cart or the like collides with the side door, the side airbag may be deployed. As described above, the side airbag may be deployed even in a situation other than a side collision.

ところで、アウトオブポジションの乗員のなかでも、図4(a)及び(b)に示すように、シートクッション41に横たわった状態の乗員40の場合、側突以外の状況でサイドエアバッグ42が展開すると、乗員40に対するエアバッグによる入力が大きくなるという課題がある。特に、乗員40が頭をドア側に向けた状態で横たわっている場合には、サイドエアバッグ42の展開により頭部が車幅方向内側に強い力で押し込まれてしまい、乗員40への入力が大きくなるおそれがある。一方で、側突の場合には、正規着座乗員の腰部とサイドドア43との間に瞬時にサイドエアバッグ42を展開させて、正規着座乗員を適切に保護する必要がある。   Incidentally, among the out-of-position occupants, as shown in FIGS. 4A and 4B, in the case of the occupant 40 lying on the seat cushion 41, the side airbag 42 is deployed in a situation other than a side collision. Then, there exists a subject that the input by the airbag with respect to the passenger | crew 40 becomes large. In particular, when the occupant 40 is lying with the head facing the door side, the head airbag is pushed inward in the vehicle width direction by the deployment of the side airbag 42, and the input to the occupant 40 is May grow. On the other hand, in the case of a side collision, it is necessary to instantaneously deploy the side airbag 42 between the waist of the regular seated occupant and the side door 43 to appropriately protect the regular seated occupant.

本件のサイドエアバッグ装置は、このような課題に鑑み案出されたもので、側突時における正規着座乗員の保護性能を向上させるとともに、側突以外の状況でサイドエアバッグが展開したときに、座席に横たわった状態の乗員に対するエアバッグの入力を低減させることを目的の一つとする。なお、この目的に限らず、後述する発明を実施するための形態に示す各構成により導かれる作用効果であって、従来の技術によっては得られない作用効果を奏することも本件の他の目的である。   The side airbag device of the present invention has been devised in view of such problems, and improves the protection performance of a regular seated occupant during a side collision, and when the side airbag is deployed in a situation other than a side collision. One of the purposes is to reduce the input of the airbag to the occupant lying in the seat. The present invention is not limited to this purpose, and is a function and effect derived from each configuration shown in the embodiment for carrying out the invention described later, and has another function and effect that cannot be obtained by conventional techniques. is there.

(1)ここで開示するサイドエアバッグ装置は、車両の座席に正規の姿勢で着座した乗員とサイドドアとの間に展開されるエアバッグと、前記エアバッグにガスを供給するインフレーターと、を具備したサイドエアバッグ装置において、前記エアバッグの下部は、前側凸部及び後側凸部が車両前後方向に並設された二股形状である。また、前記サイドエアバッグ装置は、前記前側凸部及び前記後側凸部の一方の車両外側における外表面に貼着された外側面状体と、前記前側凸部及び前記後側凸部の他方の車両内側における外表面に貼着された内側面状体と、前記前側凸部及び前記後側凸部の間で前記外側面状体及び前記内側面状体を繋ぎ、前記前側凸部及び前記後側凸部を接近させる線状体と、を備え、前記前側凸部の車幅方向寸法と前記後側凸部の車幅方向寸法との差によって前記線状体が切断された場合に、前記前側凸部及び前記後側凸部が離隔される。   (1) A side airbag device disclosed herein includes: an airbag that is deployed between an occupant seated in a regular posture on a vehicle seat and a side door; and an inflator that supplies gas to the airbag. In the side airbag device provided, the lower portion of the airbag has a bifurcated shape in which a front convex portion and a rear convex portion are juxtaposed in the vehicle front-rear direction. In addition, the side airbag device includes an outer planar body attached to an outer surface of one of the front convex portion and the rear convex portion on the vehicle outer side, and the other of the front convex portion and the rear convex portion. Connecting the outer side surface body and the inner side surface body between the inner side surface body adhered to the outer surface on the vehicle inner side, the front convex portion and the rear convex portion, and the front convex portion and the When the linear body is cut by the difference between the vehicle width direction dimension of the front convex part and the vehicle width direction dimension of the rear convex part. The front convex portion and the rear convex portion are spaced apart.

(2)前記線状体で繋がれた状態の前記前側凸部及び前記後側凸部の境界線は、車両側面視で、前記エアバッグの前後方向中心部から前方又は後方に向かって下降傾斜していることが好ましい。
(3)前記境界線は後方に向かって下降傾斜しており、前記外側面状体は前記前側凸部に貼着され、前記内側面状体は前記後側凸部に貼着されていることが好ましい。
(4)前記線状体が切断された状態での前記前側凸部及び前記後側凸部の間の空間は、車両側面視で三角形状であり、前記外側面状体及び前記内側面状体はいずれも三角形状であることが好ましい。
(2) A boundary line between the front convex portion and the rear convex portion connected with the linear body is inclined downward or forward from the front-rear center portion of the airbag in a vehicle side view. It is preferable.
(3) The boundary line is inclined downward toward the rear, the outer planar body is adhered to the front convex portion, and the inner lateral body is adhered to the rear convex portion. Is preferred.
(4) A space between the front convex portion and the rear convex portion in a state where the linear body is cut is a triangular shape in a vehicle side view, and the outer side surface body and the inner side surface body. Are preferably triangular.

開示のサイドエアバッグ装置によれば、側突時に正規着座乗員の側方でエアバッグが展開した場合には、前側凸部の車幅方向寸法(厚み)と後側凸部の車幅方向寸法(厚み)とが略同一となり、線状体が切れない。このため、線状体によって規制された前側凸部及び後側凸部によって正規着座乗員を保護できる。一方、側突以外の状況で、座席に横たわった状態の乗員の側方でエアバッグが展開した場合には、前側凸部の厚みと後側凸部の厚みとが異なり、厚みの差が生じる。この差によって線状体が切れると前側凸部及び後側凸部が離隔するため、乗員の頭部が前側凸部及び後側凸部の間に入る。したがって、側突以外の状況でエアバッグが展開したときに、座席に横たわった状態の乗員に対する入力を低減できる。   According to the disclosed side airbag device, when the airbag is deployed on the side of a normally seated occupant during a side collision, the vehicle width direction dimension (thickness) of the front convex portion and the vehicle width direction dimension of the rear convex portion (Thickness) is substantially the same, and the linear body is not cut. For this reason, a regular seated occupant can be protected by the front convex part and the rear convex part regulated by the linear body. On the other hand, when the airbag is deployed on the side of an occupant lying on the seat in a situation other than a side collision, the thickness of the front convex portion and the thickness of the rear convex portion are different, resulting in a difference in thickness. . When the linear body is cut by this difference, the front convex portion and the rear convex portion are separated from each other, so that the head of the occupant enters between the front convex portion and the rear convex portion. Therefore, when the airbag is deployed in a situation other than a side collision, it is possible to reduce input to the occupant lying on the seat.

実施形態に係るサイドエアバッグ装置を備えた座席の模式的な斜視図である。It is a typical perspective view of a seat provided with a side airbag device concerning an embodiment. 図1のサイドエアバッグ装置に設けられるエアバッグの構成を示す模式図であり、(a)はエアバッグの形状を説明するための側面図(車幅方向内側から車両左側を見た図)、(b)はエアバッグ下部の構成を説明するための側面図、(c)は図2(b)のB−B矢視断面図であって正規着座乗員の側方で展開した状態を示す。It is a schematic diagram which shows the structure of the airbag provided in the side airbag apparatus of FIG. 1, (a) is a side view for demonstrating the shape of an airbag (the figure which looked at the vehicle left side from the vehicle width direction inside), (B) is a side view for explaining the configuration of the lower portion of the airbag, and (c) is a cross-sectional view taken along the line BB in FIG. 2 (b) and shows a state where the airbag is deployed on the side of a regular seated occupant. (a)は乗員の頭部側方でエアバッグが展開したときの断面図であり、(b)は図3(a)の状態から紐が切れたあとの作用を説明するための図〔図2(a)のA−A矢視断面図〕である。(A) is sectional drawing when an airbag is expand | deployed by a passenger | crew's head side, (b) is a figure for demonstrating an effect | action after a string breaks from the state of Fig.3 (a). It is AA arrow sectional drawing of 2 (a). 課題を説明するための、エアバッグ展開状態を示す模式図であり、(a)は車幅方向内側から見た図、(b)は上方から見た図である。It is a schematic diagram which shows the airbag deployment state for demonstrating a subject, (a) is the figure seen from the vehicle width direction inner side, (b) is the figure seen from upper direction.

図面を参照して、実施形態としてのサイドエアバッグ装置について説明する。以下に示す実施形態はあくまでも例示に過ぎず、以下の実施形態で明示しない種々の変形や技術の適用を排除する意図はない。本実施形態の各構成は、それらの趣旨を逸脱しない範囲で種々変形して実施することができる。また、必要に応じて取捨選択することができ、あるいは適宜組み合わせることができる。   A side airbag device as an embodiment will be described with reference to the drawings. The embodiment described below is merely an example, and there is no intention of excluding various modifications and technical applications that are not explicitly described in the following embodiment. Each configuration of the present embodiment can be implemented with various modifications without departing from the spirit thereof. Further, they can be selected as necessary, or can be appropriately combined.

[1.構成]
本実施形態のサイドエアバッグ装置1は、図1に示す車両用のシート10(座席)に適用される。このサイドエアバッグ装置1は、シート10を構成するシートバック11の車幅方向外側の側面11aに設けられる。なお、以下の説明では、車幅方向外側を単に「外側」といい、車幅方向内側を単に「内側」という。また、車両前後方向を単に「前後方向」といい、車両前側,車両後側をそれぞれ「前側」,「後側」という。
[1. Constitution]
The side airbag apparatus 1 of this embodiment is applied to the vehicle seat 10 (seat) shown in FIG. The side airbag device 1 is provided on a side surface 11 a on the outer side in the vehicle width direction of the seat back 11 constituting the seat 10. In the following description, the outside in the vehicle width direction is simply referred to as “outside”, and the inside in the vehicle width direction is simply referred to as “inside”. The vehicle front-rear direction is simply referred to as “front-rear direction”, and the vehicle front side and vehicle rear side are referred to as “front side” and “rear side”, respectively.

サイドエアバッグ装置1は、シート10に正規の姿勢で着座した乗員(以下、「正規着座乗員」という)とサイドドア30との間に展開されるエアバッグ2(図1中の二点鎖線)と、エアバッグ2にガスを供給するインフレーター3〔図2(a)参照〕とを備える。エアバッグ2及びインフレーター3は、シートバック11の側面11aに設けられたケース4に内蔵される。なお、ここでいう「正規着座乗員」とは、シートバック11に背を向けて、シート10を構成するシートクッション12に正しい姿勢で座る乗員を意味する。本実施形態のケース4は、縦長の直方体状に形成され、シートバック11の側面11aに装着される。本実施形態のケース4は、その外側面に、インフレーター3の作動により展開するエアバッグ2に押されて外側に開放されるリッドが設けられる。   The side airbag device 1 is an airbag 2 (a chain double-dashed line in FIG. 1) that is deployed between an occupant seated in a normal posture on a seat 10 (hereinafter referred to as “regular seated occupant”) and a side door 30. And an inflator 3 (see FIG. 2A) for supplying gas to the airbag 2. The airbag 2 and the inflator 3 are built in a case 4 provided on the side surface 11 a of the seat back 11. Here, the “regular seated occupant” means an occupant who sits in a correct posture on the seat cushion 12 constituting the seat 10 with the back facing the seat back 11. The case 4 of the present embodiment is formed in a vertically long rectangular parallelepiped shape and is attached to the side surface 11 a of the seat back 11. The case 4 of this embodiment is provided with a lid that is pushed outward by the airbag 2 that is deployed by the operation of the inflator 3 and is opened to the outside.

エアバッグ2は、ケース4に収納される布製の袋であり、シートバッグ11の側面11aから前方に向かって(すなわち、正規着座乗員とサイドドア30との間に)展開することで、正規着座乗員の胴部(肩部と胸部)及び腰部を保護する機能を持つ。展開状態のエアバッグ2は、車両側面視(以下「側面視」という)で、正規着座乗員の肩部から腰部にかけてカバーしうる形状とされる。なお、エアバッグ2には、図示しないベント(ガス排出口)が設けられる。   The airbag 2 is a cloth bag accommodated in the case 4, and is deployed normally from the side surface 11 a of the seat bag 11 toward the front (that is, between the regular seated occupant and the side door 30). It has the function of protecting the occupant's torso (shoulder and chest) and waist. The airbag 2 in a deployed state has a shape that can be covered from the shoulder portion to the waist portion of a regular seated occupant in a vehicle side view (hereinafter referred to as “side view”). The airbag 2 is provided with a vent (gas exhaust port) (not shown).

インフレーター3は、エアバッグ2を膨張させるためのガス(充填ガス)を供給する装置であり、エアバッグ2の後部に配置される。インフレーター3の作動開始条件は、例えば「車両に対する衝撃を検知したこと」や「車両の前後加速度及び横加速度の少なくとも一方が所定値以上であること」とされる。なお、サイドドア30のアウタパネルとインナパネルとの間の空間に圧力センサを内蔵し、サイドドア30の内圧が所定圧以上であることを作動開始条件の一つとしてもよい。   The inflator 3 is a device that supplies gas (filling gas) for inflating the airbag 2, and is disposed at the rear portion of the airbag 2. The operation start condition of the inflator 3 is, for example, “detection of an impact on the vehicle” or “at least one of longitudinal acceleration and lateral acceleration of the vehicle is a predetermined value or more”. It should be noted that a pressure sensor may be built in the space between the outer panel and the inner panel of the side door 30 and one of the operation start conditions may be that the internal pressure of the side door 30 is equal to or higher than a predetermined pressure.

図2(a)に示すように、エアバッグ2の下部は、前側凸部21及び後側凸部22が車両前後方向に並設された二股形状と成形されている。前側凸部21は、エアバッグ2の前側下部において下方へ膨出形成された部位であり、後側凸部22は、エアバッグ2の後側下部において下方へ膨出形成された部位である。これら二つの凸部21,22の間には、側面視で、略三角形状の空間23が設けられる。側面視で空間23の頂点は、エアバッグ2の下部が二つの凸部21,22に分かれる分岐線24に相当する。空間23は、例えばシート10のシートクッション12に乗員が横たわっている場合に、乗員の頭部9〔図2(b)参照〕や足部を回避する位置に設けられる。   As shown in FIG. 2 (a), the lower portion of the airbag 2 is formed in a bifurcated shape in which a front convex portion 21 and a rear convex portion 22 are juxtaposed in the vehicle front-rear direction. The front convex portion 21 is a portion bulged downward in the front lower portion of the airbag 2, and the rear convex portion 22 is a portion bulged downward in the rear lower portion of the airbag 2. Between these two convex parts 21 and 22, a substantially triangular space 23 is provided in a side view. The top of the space 23 in a side view corresponds to a branch line 24 in which the lower portion of the airbag 2 is divided into two convex portions 21 and 22. For example, when the occupant lies on the seat cushion 12 of the seat 10, the space 23 is provided at a position that avoids the occupant's head 9 (see FIG. 2B) and the foot.

エアバッグ2は、図2(b)に示すように、エアバッグ2の外面に貼着される二枚のパッチ25,26(面状体)と、これらのパッチ25,26を繋ぐ紐27(線状体)とによって二股に分かれないように規制された状態でケース4に収納される。パッチ25,26は、エアバッグ2の外表面に貼り付けやすい素材で形成された面状の部材であり、例えば三角形状に形成される。本実施形態のパッチ25,26は、三角形状の空間23を形成する辺と略平行な斜辺を持つ略直角三角形状に形成される。   As shown in FIG. 2 (b), the airbag 2 includes two patches 25 and 26 (planar bodies) adhered to the outer surface of the airbag 2, and a string 27 ( And is stored in the case 4 in a state of being regulated so as not to be divided into two forks. The patches 25 and 26 are planar members formed of a material that can be easily attached to the outer surface of the airbag 2, and are formed in a triangular shape, for example. The patches 25 and 26 of the present embodiment are formed in a substantially right triangle shape having a hypotenuse substantially parallel to a side forming the triangular space 23.

一方のパッチ25(外側面状体)は、前側凸部21及び後側凸部22の一方の車両外側に貼着され、他方のパッチ26(内側面状体)は、前側凸部21及び後側凸部22の他方の車両内側に貼着される。本実施形態では、前側凸部21の外側にパッチ25が貼着され、後側凸部22の内側にパッチ26が貼着される。以下、二枚のパッチ25,26を区別する場合には、外側パッチ25,内側パッチ26と呼ぶ。   One patch 25 (outer surface-like body) is attached to one vehicle outer side of the front side convex portion 21 and the rear side convex portion 22, and the other patch 26 (inner side surface-like body) is attached to the front side convex portion 21 and the rear side convex portion 21. It is attached to the other vehicle inside of the side convex portion 22. In the present embodiment, the patch 25 is attached to the outside of the front convex portion 21, and the patch 26 is attached to the inside of the rear convex portion 22. Hereinafter, when the two patches 25 and 26 are distinguished, they are referred to as an outer patch 25 and an inner patch 26.

紐27は、長手方向に引張力が作用すると分離される素材で形成された線状の部材であり、例えばシートクッション12の外側面とサイドドア30との距離と同程度に設定される。図2(b)及び(c)に示すように、紐27は、車幅方向に延設されるとともに、その一端(外端)が外側パッチ25の後部に接続され、その他端(内端)が内側パッチ26の前部に接続される。すなわち、紐27は、前側凸部21及び後側凸部22の間で外側パッチ25及び内側パッチ26を繋ぎ、前側凸部21と後側凸部22とを接近させる。したがって、インフレーター3が作動してエアバッグ2が展開したときの初期状態は図2(b)に示す状態となる。なお、紐27が切断された状態では、図2(a)に示すように、前側凸部21及び後側凸部22の間に三角形状の空間23が形成される。   The string 27 is a linear member formed of a material that is separated when a tensile force acts in the longitudinal direction, and is set to be approximately the same as the distance between the outer surface of the seat cushion 12 and the side door 30, for example. 2B and 2C, the string 27 extends in the vehicle width direction, and one end (outer end) thereof is connected to the rear portion of the outer patch 25, and the other end (inner end). Is connected to the front of the inner patch 26. That is, the string 27 connects the outer patch 25 and the inner patch 26 between the front convex portion 21 and the rear convex portion 22, and brings the front convex portion 21 and the rear convex portion 22 closer to each other. Therefore, the initial state when the inflator 3 is activated and the airbag 2 is deployed is the state shown in FIG. In a state where the string 27 is cut, a triangular space 23 is formed between the front convex portion 21 and the rear convex portion 22 as shown in FIG.

本実施形態のエアバッグ2は、前側凸部21が後側凸部22に接近するように紐27によって規制される。このため、紐27で繋がれた状態の前側凸部21及び後側凸部22の境界線28は、側面視で、エアバッグ2の前後方向中心部から後方に向かって下降傾斜している。本実施形態のエアバッグ2は、図2(b)中に二点鎖線で示すように、シート10に横たわった状態の乗員の頭部9と、後側へ引っ張られた状態の前側凸部21とが車幅方向において重なるように設けられる。なお、側突時における正規着座乗員の保護性の観点から、境界線28における隙間(前側凸部21及び後側凸部22の間の隙間)はできるだけ小さいことが好ましい。   The airbag 2 of the present embodiment is regulated by the string 27 so that the front convex portion 21 approaches the rear convex portion 22. For this reason, the boundary line 28 between the front convex portion 21 and the rear convex portion 22 connected by the string 27 is inclined downward from the center in the front-rear direction of the airbag 2 in a side view. As shown by a two-dot chain line in FIG. 2B, the airbag 2 of the present embodiment includes a passenger's head 9 lying on the seat 10 and a front convex portion 21 pulled rearward. Are provided so as to overlap in the vehicle width direction. In addition, from the viewpoint of protecting a normally seated occupant during a side collision, it is preferable that the gap at the boundary line 28 (the gap between the front convex portion 21 and the rear convex portion 22) be as small as possible.

インフレーター3が作動してエアバッグ2が展開した場合、シートクッション12に正規の姿勢で乗員が着座していれば、図2(c)に示すように、乗員の腰部8の側方〔図2(c)では左側方〕にエアバッグ2の下部が入り込む。この場合、二つの凸部21,22が腰部8から同じように反力を受けるため、前側凸部21の厚み(車幅方向寸法)と後側凸部22の厚み(車幅方向寸法)とが略同一となる。つまりこの場合には、二つの凸部21,22の厚みの差がほとんど生じないため紐27が切れず、エアバッグ2は、前側凸部21及び後側凸部22が互いに接近した状態〔図2(b)に示す状態〕で展開される。このため、正規着座乗員の腰部8が適切に保護される。   When the inflator 3 is activated and the airbag 2 is deployed, if the occupant is seated in a normal posture on the seat cushion 12, as shown in FIG. 2C, the side of the lumbar 8 of the occupant [FIG. The lower part of the airbag 2 enters the left side in (c). In this case, since the two convex portions 21 and 22 receive the reaction force from the waist portion 8 in the same manner, the thickness of the front convex portion 21 (dimension in the vehicle width direction) and the thickness of the rear convex portion 22 (dimension in the vehicle width direction) Are substantially the same. That is, in this case, the difference between the thicknesses of the two convex portions 21 and 22 hardly occurs, so the string 27 is not cut, and the airbag 2 is in a state where the front convex portion 21 and the rear convex portion 22 are close to each other [see FIG. 2 (b)]. For this reason, the waist | hip | lumbar part 8 of a regular seated passenger is protected appropriately.

一方、インフレーター3が作動してエアバッグ2が展開したときに、シートクッション12に乗員が横たわっている場合には、図3(a)に示すように、前側凸部21が乗員の頭部9と接触し、前側凸部21だけが頭部9から反力を受ける。このため、後側凸部22により多くのガスが供給されて、後側凸部22が前側凸部21よりも大きく展開される。これにより、前側凸部21の厚みと後側凸部22の厚みとに差が生じて紐27が切れると、図3(b)中に矢印で示すように、前側凸部21が前方へと移動して、前側凸部21と後側凸部22とが離隔される。すなわちこの場合は、エアバッグ2が図2(a)に示す状態となるため、シート10に横たわった状態の乗員の頭部9に強い力が作用することがなく、乗員に対する入力が低減する。   On the other hand, when the occupant lies on the seat cushion 12 when the inflator 3 is actuated and the airbag 2 is deployed, as shown in FIG. Only the front convex portion 21 receives a reaction force from the head 9. For this reason, more gas is supplied to the rear convex part 22, and the rear convex part 22 is expanded larger than the front convex part 21. As a result, when a difference occurs between the thickness of the front convex portion 21 and the thickness of the rear convex portion 22 and the string 27 is cut, the front convex portion 21 moves forward as indicated by an arrow in FIG. It moves and the front side convex part 21 and the rear side convex part 22 are separated. That is, in this case, since the airbag 2 is in the state shown in FIG. 2A, a strong force does not act on the head 9 of the occupant lying on the seat 10, and input to the occupant is reduced.

[2.効果]
(1)したがって、上述したサイドエアバッグ装置1によれば、側突時に正規着座乗員の側方でエアバッグ2が展開した場合には、前側凸部21と後側凸部22とに厚みの差がほとんど生じないことから、紐27によって規制された前側凸部21及び後側凸部22によって正規着座乗員を保護できる。一方、側突以外の状況で、シート10に横たわった状態の乗員の側方でエアバッグ2が展開した場合には、前側凸部21と後側凸部22とに厚みの差が生じる。そのため、この厚みの差によって紐27が切れた場合には、前側凸部21及び後側凸部22が離隔するため、乗員の頭部9が前側凸部21及び後側凸部22の間に入る。したがって、側突以外の状況でエアバッグ2が展開したときに、シート10に横たわった状態の乗員に対するエアバッグ2による入力を低減できる。
[2. effect]
(1) Therefore, according to the side airbag device 1 described above, when the airbag 2 is deployed on the side of a regular seated occupant during a side collision, the front convex portion 21 and the rear convex portion 22 have a thickness. Since a difference hardly arises, a regular seating occupant can be protected by the front convex part 21 and the rear convex part 22 regulated by the string 27. On the other hand, when the airbag 2 is deployed on the side of an occupant lying on the seat 10 in a situation other than a side collision, a difference in thickness occurs between the front convex portion 21 and the rear convex portion 22. Therefore, when the string 27 is cut due to this thickness difference, the front convex portion 21 and the rear convex portion 22 are separated from each other, so that the occupant's head 9 is located between the front convex portion 21 and the rear convex portion 22. enter. Therefore, when the airbag 2 is deployed in a situation other than a side collision, the input by the airbag 2 to the occupant lying on the seat 10 can be reduced.

(2)上述したサイドエアバッグ装置1では、紐27で繋がれた状態の外側パッチ25及び内側パッチ26の境界線28が、側面視で後方に向かって下降傾斜している。すなわち、二つの凸部21,22のうちの一方(ここでは前側凸部21)が他方(後側凸部22)に接近するように引っ張られた状態でエアバッグ2が展開する。この場合、二つの凸部21,22に厚みの差が生じて紐27が切れると、引っ張られている一方の凸部(前側凸部21)が元の形状に戻るため、空間23が大きく広がり、乗員の頭部9を回避しやすくなる。したがって、シート10に横たわった状態の乗員に対する入力をより低減できる。   (2) In the side airbag device 1 described above, the boundary line 28 between the outer patch 25 and the inner patch 26 connected by the string 27 is inclined downward toward the rear in a side view. That is, the airbag 2 is deployed in a state where one of the two convex portions 21 and 22 (here, the front convex portion 21) is pulled so as to approach the other (the rear convex portion 22). In this case, when a difference in thickness occurs between the two convex portions 21 and 22 and the string 27 is cut, one of the pulled convex portions (the front convex portion 21) returns to the original shape, so that the space 23 is greatly expanded. This makes it easier to avoid the passenger's head 9. Therefore, it is possible to further reduce the input to the occupant lying on the seat 10.

(3)上述したサイドエアバッグ装置1では、エアバッグ2の後部に配置されたインフレーター3から前方に向かってガスが供給され、エアバッグ2が展開する。上述したように、引っ張られた状態で規制されていた一方の凸部(前側凸部21)は、紐27が切れることで元の形状に戻るが、上記のエアバッグ2のように、前側凸部21を後側に引っ張った状態とすることで、紐27が切れたときに、インフレーター3から供給されるガスの勢いも利用して前側凸部21を前方へと移動させることができる。すなわち、境界線28が後方に向かって下降傾斜するように、紐27で前側凸部21を後側に引っ張った状態に規制しておくことで、紐27が切れたときの空間23の広がりを促進でき、乗員の頭部9をより回避しやすくなる。このため、シート10に横たわった状態の乗員に対する入力をより低減できる。   (3) In the above-described side airbag device 1, gas is supplied forward from the inflator 3 disposed at the rear portion of the airbag 2, and the airbag 2 is deployed. As described above, one convex portion (front convex portion 21) that has been regulated in a pulled state returns to its original shape when the string 27 is broken, but like the airbag 2, the front convex portion By setting the portion 21 to be pulled to the rear side, when the string 27 is cut, the front convex portion 21 can be moved forward using the momentum of the gas supplied from the inflator 3. That is, by restricting the front convex portion 21 to the rear side with the string 27 so that the boundary line 28 is inclined downward toward the rear, the space 23 when the string 27 is broken can be expanded. This makes it easier to avoid the passenger's head 9. For this reason, the input with respect to the passenger | crew in the state which laid down on the sheet | seat 10 can be reduced more.

(4)上述したサイドエアバッグ装置1では、空間23が側面視で三角形状であり、外側パッチ25及び内側パッチ26も三角形状に形成されている。このため、エアバッグ2の下部に設けられた二つの凸部21,22の形状を二つのパッチ25,26で補強しつつ、境界線28における隙間(前側凸部21及び後側凸部22の間の隙間)をできるだけ小さくすることができ、側突時における正規着座乗員の保護性を向上させることができる。   (4) In the side airbag device 1 described above, the space 23 has a triangular shape in a side view, and the outer patch 25 and the inner patch 26 are also formed in a triangular shape. For this reason, while reinforcing the shape of the two convex parts 21 and 22 provided in the lower part of the airbag 2 with the two patches 25 and 26, the gap at the boundary 28 (the front convex part 21 and the rear convex part 22 Can be made as small as possible, and the protection of a regular seated occupant during a side collision can be improved.

[3.その他]
上述したサイドエアバッグ装置1は一例であって、上述した構成に限られない。例えば、外側パッチ25が後側凸部22の車両外側における外表面に貼着され、内側パッチ26が前側凸部21の車両内側における外表面に貼着されていてもよい。このような構成であっても、前側凸部21の厚みと後側凸部22の厚みとに差が生じて紐27が切断された場合には、前側凸部21及び後側凸部22が離隔されるため、上述した実施形態と同様の作用効果が得られる。
[3. Others]
The side airbag device 1 described above is an example, and is not limited to the configuration described above. For example, the outer patch 25 may be attached to the outer surface of the rear convex portion 22 on the vehicle outer side, and the inner patch 26 may be attached to the outer surface of the front convex portion 21 on the vehicle inner side. Even in such a configuration, when the string 27 is cut due to a difference between the thickness of the front convex portion 21 and the thickness of the rear convex portion 22, the front convex portion 21 and the rear convex portion 22 are Since they are separated from each other, the same effects as those of the above-described embodiment can be obtained.

また、上述した実施形態では、前側凸部21が後側に引っ張られた状態で規制されているが、反対に、後側凸部22を前側に引っ張った状態で紐27により規制してもよい。この場合、紐27で繋がれた状態の前側凸部21及び後側凸部22の境界線28は、側面視で、エアバッグ2の前後方向中心部から前方に向かって下降傾斜する。このような構成であっても、上述した実施形態と同様の作用効果が得られる。なお、境界線28が側面視で真下に伸びるように、二つの凸部21,22を紐27によって規制してもよい。   Moreover, in embodiment mentioned above, although the front side convex part 21 is controlled in the state pulled by the back side, conversely, you may control by the string 27 in the state which pulled the back side convex part 22 to the front side. . In this case, the boundary line 28 between the front convex portion 21 and the rear convex portion 22 connected by the string 27 is inclined downward from the center in the front-rear direction of the airbag 2 in a side view. Even with such a configuration, the same effect as the above-described embodiment can be obtained. Note that the two convex portions 21 and 22 may be regulated by the string 27 so that the boundary line 28 extends right below in a side view.

各パッチの素材や形状は特に限らず、エアバッグ2の外表面に貼着される面状の部材であればよい。また、二つのパッチを繋ぐ部材も紐27に限らず、長手方向に引張力が作用した時に切れる素材の線状の部材であればよい。また、エアバッグ2の下部に設けられる二つの凸部21,22の形状も上述した形状でなくてもよい。例えば、二つの凸部が側面視で矩形状や半円状等であってもよい。二つの凸部の間の空間は、凸部の形状に応じて変更される。   The material and shape of each patch are not particularly limited, and may be a planar member that is attached to the outer surface of the airbag 2. Further, the member that connects the two patches is not limited to the string 27, and may be a linear member that is cut when a tensile force acts in the longitudinal direction. Moreover, the shape of the two convex parts 21 and 22 provided in the lower part of the airbag 2 may not be the shape mentioned above. For example, the two convex portions may be rectangular or semicircular when viewed from the side. The space between the two convex portions is changed according to the shape of the convex portion.

上述したエアバッグ2の構成やケース4の構成は一例であって上述したものに限らない。例えば、エアバッグ2が複数のチャンバーを有するものであってもよいし、ケースが直方体形状でなくてもよい。また、ケース4がシートバック11の側面11aに内蔵されていて、エアバッグ2が展開されると側面11aのカバーを破って飛び出す構成としてもよい。なお、上述したインフレーター3の作動開始条件は一例であって、上述したものに限らない。   The configuration of the airbag 2 and the configuration of the case 4 described above are examples and are not limited to those described above. For example, the airbag 2 may have a plurality of chambers, and the case may not have a rectangular parallelepiped shape. Further, the case 4 may be built in the side surface 11a of the seat back 11, and when the airbag 2 is deployed, the cover of the side surface 11a may be broken and popped out. In addition, the operation start conditions of the inflator 3 described above are examples, and are not limited to those described above.

1 サイドエアバッグ装置
2 エアバッグ
3 インフレーター
4 ケース
8 正規着座乗員の腰部
9 乗員の頭部
10 シート(座席)
11 シートバッグ
11a 側面
12 シートクッション
21 前側凸部
22 後側凸部
23 空間
24 分岐線
25 外側パッチ(外側面状体)
26 内側パッチ(内側面状体)
27 紐(線状体)
28 境界線
30 サイドドア
40 乗員
41 シートクッション
42 エアバッグ
43 サイドドア
DESCRIPTION OF SYMBOLS 1 Side airbag apparatus 2 Air bag 3 Inflator 4 Case 8 Lumbar part of regular seated passenger 9 Crew head 10 Seat (seat)
DESCRIPTION OF SYMBOLS 11 Seat bag 11a Side surface 12 Seat cushion 21 Front side convex part 22 Rear side convex part 23 Space 24 Branch line 25 Outer patch (outer surface-like body)
26 Inner patch (inner side surface)
27 String (Linear)
28 Boundary Line 30 Side Door 40 Crew 41 Seat Cushion 42 Airbag 43 Side Door

Claims (4)

車両の座席に正規の姿勢で着座した乗員とサイドドアとの間に展開されるエアバッグと、前記エアバッグにガスを供給するインフレーターと、を具備したサイドエアバッグ装置において、
前記エアバッグの下部は、前側凸部及び後側凸部が車両前後方向に並設された二股形状であり、
前記サイドエアバッグ装置は、
前記前側凸部及び前記後側凸部の一方の車両外側における外表面に貼着された外側面状体と、
前記前側凸部及び前記後側凸部の他方の車両内側における外表面に貼着された内側面状体と、
前記前側凸部及び前記後側凸部の間で前記外側面状体及び前記内側面状体を繋ぎ、前記前側凸部及び前記後側凸部を接近させる線状体と、を備え、
前記前側凸部の車幅方向寸法と前記後側凸部の車幅方向寸法との差によって前記線状体が切断された場合に、前記前側凸部及び前記後側凸部が離隔される
ことを特徴とする、サイドエアバッグ装置。
In a side airbag device comprising an airbag deployed between a passenger seated in a regular posture on a vehicle seat and a side door, and an inflator for supplying gas to the airbag,
The lower portion of the airbag has a bifurcated shape in which a front convex portion and a rear convex portion are arranged in parallel in the vehicle front-rear direction,
The side airbag device includes:
An outer planar body adhered to the outer surface of one of the front convex portion and the rear convex portion on the vehicle outer side;
An inner side surface attached to the outer surface of the other side of the front side convex portion and the rear side convex portion;
A linear body that connects the outer side surface body and the inner side surface body between the front side convex part and the rear side convex part, and makes the front side convex part and the rear side convex part approach;
When the linear body is cut due to a difference between a vehicle width direction dimension of the front convex part and a vehicle width direction dimension of the rear convex part, the front convex part and the rear convex part are separated from each other. A side airbag device characterized by the above.
前記線状体で繋がれた状態の前記前側凸部及び前記後側凸部の境界線は、車両側面視で、前記エアバッグの前後方向中心部から前方又は後方に向かって下降傾斜している
ことを特徴とする、請求項1記載のサイドエアバッグ装置。
The boundary line between the front convex portion and the rear convex portion connected by the linear body is inclined downward from the front-rear center portion of the airbag toward the front or rear in a vehicle side view. The side airbag device according to claim 1, wherein
前記境界線は後方に向かって下降傾斜しており、
前記外側面状体は前記前側凸部に貼着され、前記内側面状体は前記後側凸部に貼着されている
ことを特徴とする、請求項2記載のサイドエアバッグ装置。
The boundary line is inclined downward toward the rear,
The side airbag device according to claim 2, wherein the outer planar body is adhered to the front convex portion, and the inner lateral body is adhered to the rear convex portion.
前記線状体が切断された状態での前記前側凸部及び前記後側凸部の間の空間は、車両側面視で三角形状であり、
前記外側面状体及び前記内側面状体はいずれも三角形状である
ことを特徴とする、請求項1〜3のいずれか1項に記載のサイドエアバッグ装置。
The space between the front convex portion and the rear convex portion in a state where the linear body is cut is triangular in a vehicle side view,
The side airbag device according to any one of claims 1 to 3, wherein each of the outer side surface body and the inner side surface body has a triangular shape.
JP2018018109A 2018-02-05 2018-02-05 Side airbag device Pending JP2019135114A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021015192A1 (en) 2019-07-23 2021-01-28 キヤノン株式会社 Resin composition and resin molded product thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021015192A1 (en) 2019-07-23 2021-01-28 キヤノン株式会社 Resin composition and resin molded product thereof

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