JPH09136595A - Air bag device for side impact - Google Patents

Air bag device for side impact

Info

Publication number
JPH09136595A
JPH09136595A JP7296888A JP29688895A JPH09136595A JP H09136595 A JPH09136595 A JP H09136595A JP 7296888 A JP7296888 A JP 7296888A JP 29688895 A JP29688895 A JP 29688895A JP H09136595 A JPH09136595 A JP H09136595A
Authority
JP
Japan
Prior art keywords
bag
head
chest
vehicle
occupant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7296888A
Other languages
Japanese (ja)
Inventor
Teruhiko Koide
輝彦 小出
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokai Rika Co Ltd
Original Assignee
Tokai Rika Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokai Rika Co Ltd filed Critical Tokai Rika Co Ltd
Priority to JP7296888A priority Critical patent/JPH09136595A/en
Priority to DE19646698A priority patent/DE19646698A1/en
Publication of JPH09136595A publication Critical patent/JPH09136595A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/23138Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/207Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle seats
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334Expansion control features
    • B60R21/2338Tethers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/0002Type of accident
    • B60R2021/0006Lateral collision
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R2021/23107Inflatable members characterised by their shape, construction or spatial configuration the bag being integrated in a multi-bag system
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/233Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • B60R2021/23324Inner walls crating separate compartments, e.g. communicating with vents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334Expansion control features
    • B60R21/2338Tethers
    • B60R2021/23386External tether means

Abstract

PROBLEM TO BE SOLVED: To reduce the size and cost of an air bag device for side impact. SOLUTION: In the event of a side impact of a vehicle, this air bag device 20 for side collisions causes a chest bag 22 to deploy from the side of a seat bag 14 toward the inner surface of a door trim or the like which corresponds to the chest of a passenger, and then causes a head bag 24 to expand toward the inner surface of a window pane which corresponds to the chest of the occupant. The chest bag 22 and the seat bag 14 are connected in advance to the head bag 24 via respective connecting sheets 26, 28 to hold the deployed head bag 24 in such a way that it cannot move toward the outside of the vehicle. Thus even a relatively small head bag 24 can fully absorb the kinetic energy of the head of the occupant so that the bags 22, 24 and inflators 40, 42 can reduce in size.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、車両の側面衝突時
(以下「側突」という)に車両内側面と乗員との間に袋
体を展開させる側突用エアバッグ装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side impact airbag device for inflating a bag between an inner side surface of a vehicle and an occupant during a side collision of the vehicle (hereinafter referred to as "side collision").

【0002】[0002]

【従来の技術】車両の側突時に乗員を保護するための装
置として、車両用シート、例えばシートバック内に組み
込まれた袋体をドアトリム、ピラー等の内面側に展開さ
せ、ドアトリム等と乗員との間に袋体を介在させて乗員
を保護する側突用エアバッグ装置が提案されている。ま
た最近では、上記側突用エアバッグ装置において、とく
に乗員頭部を保護するために乗員頭部に対応する領域、
例えば窓ガラス等の内面側に袋体を展開させることも提
案されている。
2. Description of the Related Art As a device for protecting an occupant in the event of a side collision of a vehicle, a vehicle seat, for example, a bag body incorporated in a seat back is developed on the inner surface side of a door trim, a pillar, etc. There has been proposed an airbag apparatus for side impact that protects an occupant by interposing a bag between them. Recently, in the side impact airbag device, a region corresponding to the occupant's head in order to particularly protect the occupant's head,
For example, it has also been proposed to deploy a bag on the inner surface of a window glass or the like.

【0003】[0003]

【発明が解決しようとする課題】ところで、上記側突用
エアバッグ装置では、従来、乗員頭部の運動エネルギを
袋体によって十分吸収するために、大型・大容量の袋体
を用いて広範囲に展開させることが考えられている。と
ころが、このような広範囲に袋体を展開するためには、
大型・大容量の袋体のみならず、ガス発生量の大きなイ
ンフレータを使用しなければならず、コストを上げる原
因となる。
By the way, in the above-described side impact airbag device, in order to sufficiently absorb the kinetic energy of the occupant's head by the bag body, a large-sized and large-capacity bag body is used in a wide range. It is considered to be deployed. However, in order to deploy the bag in such a wide area,
Not only a large-sized and large-capacity bag, but also an inflator that generates a large amount of gas must be used, which increases costs.

【0004】本発明は上記事実を考慮して成されたもの
で、小型で安価な側突用エアバッグ装置を得ることが目
的である。
The present invention has been made in view of the above facts, and an object thereof is to obtain a small-sized and inexpensive side impact airbag device.

【0005】[0005]

【課題を解決するための手段】上記目的を達成するため
に本発明は、車両の側突時に車両用シート側部から膨出
し乗員胸部に対応する車両内側面の内側領域に展開する
第1の袋体と、前記車両用シート側部から膨出し乗員頭
部に対応する前記第1の袋体の上方領域に展開すると共
に、展開した状態で車両外側への移動が拘束されるよう
前記車両用シート及び第1の袋体に各々接続された第2
の袋体と、前記第1の袋体及び第2の袋体の内部にガス
を供給するガス供給手段と、を備えて構成されている。
In order to achieve the above object, the present invention is directed to a first aspect of the present invention, which bulges out from a side portion of a vehicle seat at the time of a side collision of the vehicle and is deployed in an inner region of an inner side surface of the vehicle corresponding to the occupant's chest. For the vehicle, the bag and the vehicle seat are bulged from the side portion of the vehicle and deployed in the upper region of the first bag corresponding to the occupant's head, and the outward movement of the bag is restrained in the deployed state. Second seats respectively connected to the seat and the first bag body
And a gas supply means for supplying gas into the inside of the first bag and the second bag.

【0006】本発明では、ガス供給手段により第1の袋
体内及び第2の袋体内にガスが供給されると、第1の袋
体は乗員胸部に対応する車両内側面の内側領域に展開
し、第2の袋体は乗員頭部に対応する第1の袋体の上方
領域に展開する。ここで、乗員胸部に対応する車両内側
面の領域はドアトリムやピラー等で形成されている。こ
のため、前記第1の袋体はドアトリム等と乗員との間に
挟持され、乗員胸部の運動エネルギを十分に吸収する。
また、第2の袋体は車両用シート及び第1の袋体に各々
接続され、展開した状態で車両外側方向へ移動不能に保
持される。このため、前記第2の袋体として比較的小型
の袋体を用いても乗員頭部の運動エネルギを良好に吸収
できる。
According to the present invention, when gas is supplied into the first bag body and the second bag body by the gas supply means, the first bag body is deployed in the inner region of the vehicle inner surface corresponding to the occupant's chest. , The second bag deploys in the upper region of the first bag corresponding to the occupant's head. Here, the region of the vehicle inner surface corresponding to the occupant's chest is formed by a door trim, a pillar, or the like. Therefore, the first bag is sandwiched between the door trim and the like and the occupant, and sufficiently absorbs the kinetic energy of the occupant's chest.
The second bag is connected to the vehicle seat and the first bag, and is held immovably in the vehicle outer direction in the expanded state. Therefore, even if a relatively small bag is used as the second bag, the kinetic energy of the occupant's head can be absorbed well.

【0007】[0007]

【発明の実施の形態】BEST MODE FOR CARRYING OUT THE INVENTION

〔第1の実施形態〕図1には本第1の実施形態に係る側
突用エアバッグ装置を車両用シート10に適用した様子
が示されている。車両用シート10内には車両の側突時
に乗員を保護するための側突用エアバック装置20が組
込まれている。側突用エアバック装置20は、乗員胸部
に対応する胸部用バッグ(第1の袋体)22と、乗員頭
部に対応する頭部用バッグ(第2の袋体)24と、を備
え、車両の側突時に車両用シート10の側部からバッグ
22、24をドアトリム等の車両内側面に沿って展開す
る。ここで、胸部用バッグ22は略矩形状の表・裏の2
枚のシート材を重ね合わせ周囲を縫合することにより密
閉状に形成され、通常時はシートバック14に設置した
ケース32の内部に折り畳まれた状態で収納されてい
る。また、頭部用バッグ24は略扇状ないし三角形状の
表・裏の2枚のシート材を重ね合わせて密閉状に形成さ
れ、前記ケース32の上方位置に設けたケース34の内
部に折り畳まれた状態で収納されている。
[First Embodiment] FIG. 1 shows a state in which the side collision airbag device according to the first embodiment is applied to a vehicle seat 10. The vehicle seat 10 incorporates a side collision airbag device 20 for protecting an occupant in a vehicle side collision. The side collision airbag device 20 includes a chest bag (first bag body) 22 corresponding to the occupant's chest, and a head bag (second bag body) 24 corresponding to the occupant's head, At the time of a side collision of the vehicle, the bags 22 and 24 are deployed from the side portion of the vehicle seat 10 along the inner surface of the vehicle such as a door trim. Here, the chest bag 22 has two substantially rectangular front and back sides.
It is formed into a hermetically sealed state by stacking a plurality of sheet materials and stitching the periphery thereof, and is normally stored in a folded state inside a case 32 installed in the seat back 14. The head bag 24 is formed in a hermetically sealed manner by stacking two substantially fan-shaped or triangular-shaped front and back sheet materials, and is folded inside a case 34 provided above the case 32. It is stored in the state.

【0008】前記ケース32、34は図2に示すように
シートバック14の骨格をなす略門形のシートバックフ
レーム18の外側面(車幅方向外側面)に取付けられて
いる。ケース32、34の外側部は開口部とされ、シー
トバックフレーム18のケース32、34と反対側には
インフレータ40、42(ガス供給手段)が取付けられ
ている。シートバックフレーム18及びケース32、3
4の所定位置には図示しない貫通孔が形成され、図示し
ない加速度センサ等のセンサユニットにより車両の側突
が検知された場合にインフレータ40、42から噴出さ
れるガスを前記貫通孔(図示せず)を通じて各々対応す
るバッグ22、24内に導入できるようになっている。
As shown in FIG. 2, the cases 32 and 34 are attached to the outer surface (outer surface in the vehicle width direction) of the substantially gate-shaped seat back frame 18 forming the skeleton of the seat back 14. Outer portions of the cases 32 and 34 are openings, and inflators 40 and 42 (gas supply means) are attached to the side of the seatback frame 18 opposite to the cases 32 and 34. Seat back frame 18 and cases 32, 3
A through hole (not shown) is formed at a predetermined position of No. 4, and the gas ejected from the inflators 40, 42 when the vehicle side collision is detected by a sensor unit (not shown) such as an acceleration sensor is used as the through hole (not shown). ), It can be introduced into the corresponding bags 22 and 24, respectively.

【0009】前記胸部用バッグ22はインフレータ40
からのガスの導入に伴い後述するシートバック14側面
の開口からシートバック14外へ膨出し、図1に示すよ
うに乗員胸部の側方に位置するドアトリム等の内面(車
体内側面)を覆うように展開する。また頭部用バッグ2
4はインフレータ42からのガスの導入に伴い乗員頭部
の側方に位置する窓ガラス等の内面側を覆うように展開
する。
The chest bag 22 is an inflator 40.
With the introduction of gas from the seat back 14, it swells out of the seat back 14 through an opening on the side surface of the seat back 14 to be described later, and covers the inner surface (the inner surface of the vehicle body) such as the door trim located laterally of the occupant's chest as shown in FIG. Expand to. Also head bag 2
4 is deployed so as to cover the inner surface side of the window glass or the like located laterally of the occupant's head with the introduction of gas from the inflator 42.

【0010】ここで、頭部用バッグ24は連結シート2
6、28を介して静止系である胸部用バッグ22及びシ
ートバック14に各々連結されており、展開した状態で
車両外側方向(図1の矢印A方向)への移動が拘束され
るようになっている。図1に示すように、連結シート2
6は、展開後の頭部用バッグ24の主に下側部分の移動
を拘束するためのもので、略矩形とされ、該矩形の相対
向する一対の辺(縁)がそれぞれ胸部用バッグ22の上
側側縁及び頭部用バッグ24の下側側縁に縫製等により
取付けられている。また連結シート28は、頭部用バッ
グ24の主に上側部分の移動を拘束するもので、略三角
形とされ、該三角形の一辺が頭部用バッグ24の上側側
縁へ縫製等により取付けられ、他の辺がシートバックフ
レーム18の水平ビーム18B背面にボルト等により取
付けられている(図2参照)。
Here, the head bag 24 is the connecting sheet 2
6 and 28 are connected to the chest bag 22 and the seat back 14, which are stationary systems, so that movement in the vehicle outer direction (arrow A direction in FIG. 1) is restrained in the unfolded state. ing. As shown in FIG. 1, the connecting sheet 2
Reference numeral 6 is mainly for restraining the movement of the lower portion of the head bag 24 after deployment, and is formed in a substantially rectangular shape, and a pair of opposite sides (edges) of the rectangle are respectively for the chest bag 22. Are attached to the upper side edge of the head bag 24 and the lower side edge of the head bag 24 by sewing or the like. Further, the connecting sheet 28 mainly restrains the movement of the upper portion of the head bag 24, and has a substantially triangular shape, and one side of the triangle is attached to the upper side edge of the head bag 24 by sewing or the like, The other side is attached to the rear surface of the horizontal beam 18B of the seat back frame 18 with bolts or the like (see FIG. 2).

【0011】連結シート26、28は、図2に示すよう
に通常時はバッグ22、24と共に折り畳まれてシート
バック14内に収納されており、両バッグ22、24の
展開が終了した時点で張設した状態となり、展開後の頭
部用バッグ24の車両外側方向への移動を拘束する。
As shown in FIG. 2, the connecting sheets 26 and 28 are normally folded together with the bags 22 and 24 and stored in the seat back 14, and when the unfolding of the bags 22 and 24 is completed, the connecting sheets 26 and 28 are stretched. When the head bag 24 is deployed, the head bag 24 is restrained from moving in the vehicle outer direction.

【0012】図3に示すように、シートバック14の側
面及び背面のシート材19には、膨張するバッグ22、
24をシートバック14外へ展開するための縫合部46
が形成されている。縫合部46は、シートバック14の
シート材19を切り裂き、切り裂いたシート材19の表
皮部分を縫合することにより形成されており、膨張する
バッグ22、24により内側から押圧されることで縫合
糸が破断して開口が形成され、該開口からバッグ22、
24が展開されるようになっている。なお、縫合部46
は、図4(A)にも示すように、前記バッグ22、24
を良好に展開できるようシートバック14側面の前側端
縁19A、上端縁19B、及びシートバック14背面の
上端縁19Cに沿って連続して形成されている。
As shown in FIG. 3, the inflatable bag 22 is attached to the sheet material 19 on the side surface and the back surface of the seat back 14.
Sutured portion 46 for deploying 24 outside seat back 14
Are formed. The sewn portion 46 is formed by cutting the sheet material 19 of the seat back 14 and stitching the skin portion of the cut sheet material 19, and the suture thread is pressed by the inflating bags 22 and 24 from the inside. A rupture results in an opening from which the bag 22,
24 are to be developed. The suture portion 46
As shown in FIG. 4A, the bags 22 and 24 are
The front end edge 19A and the upper end edge 19B on the side surface of the seat back 14 and the upper end edge 19C on the back surface of the seat back 14 are continuously formed so that the seat can be properly deployed.

【0013】次に、本第1の実施形態の作用について説
明する。通常走行時、胸部用バッグ22及び頭部用バッ
グ24は各々シートバック14内に収納されている。い
ま、シートクッション12(図1)の側方に取付けた図
示しないセンサユニットにより車両の側突が検知される
と、センサユニット(図示せず)からの検知信号に基づ
いて、まずインフレータ40が作動される。インフレー
タ40が作動するとインフレータ40内のガスが胸部用
バッグ22内に導入され胸部用バッグ22の膨張が開始
される。胸部用バッグ22の膨張が開始されると予めシ
ートバック12に形成した縫合部46(図4(A))が
膨張する胸部用バッグ22によって内側から押圧されて
破断し開口が形成される。これにより、胸部用バッグ2
2はシートバック14の側部から前方に、即ち図4
(B)のように乗員の胸部を巻き込むような形で展開さ
れる。
Next, the operation of the first embodiment will be described. During normal traveling, the chest bag 22 and the head bag 24 are stored in the seat back 14, respectively. Now, when a vehicle side collision is detected by a sensor unit (not shown) attached to the side of the seat cushion 12 (FIG. 1), the inflator 40 first operates based on a detection signal from the sensor unit (not shown). To be done. When the inflator 40 operates, the gas in the inflator 40 is introduced into the chest bag 22 and the chest bag 22 starts to expand. When the expansion of the chest bag 22 is started, the sewn portion 46 (FIG. 4A) formed in advance on the seat back 12 is pressed from the inside by the expanding chest bag 22 and is broken to form an opening. This allows the chest bag 2
2 is forward from the side of the seat back 14, that is, FIG.
As shown in (B), the occupant's chest is rolled up.

【0014】ところで、車両の側突時には乗員に横方向
の加速度Gが加わり、この加速度Gにより乗員はサイド
ドア側(車室内側部)に移動する。このとき、乗員の胸
部がまずサイドドア側に移動するが、サイドドアのドア
トリムの内面側には既に胸部用バッグ22が展開してい
るため、図5(A)に示すように乗員胸部とドアトリム
との間に胸部用バッグ22が挟持された形となり、乗員
胸部の運動エネルギは胸部用バッグ22により十分に吸
収される。
At the time of a side collision of a vehicle, a lateral acceleration G is applied to the occupant, and the occupant moves to the side door side (inside the passenger compartment) due to the acceleration G. At this time, the chest of the occupant first moves to the side door side, but since the chest bag 22 has already been deployed on the inner surface side of the door trim of the side door, as shown in FIG. The chest bag 22 is sandwiched between and, and the kinetic energy of the occupant's chest is sufficiently absorbed by the chest bag 22.

【0015】前記センサユニット(図示せず)は次にイ
ンフレータ42を作動させてインフレータ42内のガス
を頭部用バッグ24内に導入し頭部用バッグ24を膨張
させる。頭部用バッグ24が膨張されると縫合部46は
さらに広く破断され、頭部用バッグ24はシートバック
14の肩部から前方斜め上方に、即ち図4(C)のよう
に乗員の後頭部から斜め前方まで頭部を巻き込むような
形で展開される。
The sensor unit (not shown) then actuates the inflator 42 to introduce the gas in the inflator 42 into the head bag 24 to inflate the head bag 24. When the head bag 24 is inflated, the sewn portion 46 is further ruptured, and the head bag 24 is obliquely upward and forward from the shoulder portion of the seat back 14, that is, from the occupant's back head as shown in FIG. 4 (C). It is unfolded in such a way that the head is rolled up diagonally forward.

【0016】このとき、頭部用バッグ24の上下両側縁
にはそれぞれ連結シート26、28を介して固定系であ
るシートバックフレーム18及び胸部用バッグ22が連
結されており、頭部用バッグ24の展開が完了した時点
で連結シート26、28は張設した状態となる。このた
め、図5(B)に示すように乗員の頭部が車室内側部に
移動してきたときには既に頭部用バッグ24は車両外側
へ移動不能な状態で保持されており、乗員頭部の運動エ
ネルギを頭部用バッグ24により十分に吸収できる。す
なわち、乗員頭部が移動したとき既にドアトリムと乗員
胸部とで胸部用バッグ22を挟持した状態となっている
ため、乗員胸部より若干遅れて移動してくる頭部に対し
ても頭部用バッグ24の両端固定が確実に保たれるた
め、頭部用バッグ24の移動が確実に阻止され、乗員頭
部の運動エネルギを十分に吸収できる。
At this time, the seat back frame 18 and the chest bag 22, which are a fixed system, are connected to the upper and lower edges of the head bag 24 via connecting sheets 26 and 28, respectively. When the unfolding of the sheet is completed, the connecting sheets 26 and 28 are in a stretched state. Therefore, as shown in FIG. 5B, when the head of the occupant has moved to the inner side of the vehicle compartment, the head bag 24 is already held immovable to the outside of the vehicle, and The kinetic energy can be sufficiently absorbed by the head bag 24. That is, since the chest bag 22 is already sandwiched between the door trim and the occupant's chest when the occupant's head moves, even if the head moves a little later than the occupant's chest, the head bag does not move. Since both ends of 24 are securely fixed, movement of the head bag 24 is reliably prevented, and the kinetic energy of the occupant's head can be sufficiently absorbed.

【0017】以上のように本第1の実施形態では、乗員
頭部に対応して展開する頭部用バッグ24を連結シート
26、28により胸部用バッグ22及びシートバック1
4に各々連結して展開後の頭部用バッグ24の車両外側
方向への移動を拘束したので、比較的小型・小容量の頭
部用バッグ24を用いても乗員頭部の運動エネルギを十
分吸収できる。このため、頭部用バッグ24及びインフ
レータ42の小型化・小容量化、ひいてはエアバッグ装
置20全体の小型化を図ることができ、収納スペースの
削減並びにコストダウンを達成できる。
As described above, in the first embodiment, the head bag 24 that is deployed corresponding to the occupant's head is connected to the chest bag 22 and the seat back 1 by the connecting sheets 26 and 28.
4 and the movement of the head bag 24 after deployment to the vehicle outer side is restrained, the kinetic energy of the occupant's head is sufficient even if the head bag 24 having a relatively small size and a small capacity is used. Can be absorbed. As a result, the head bag 24 and the inflator 42 can be made smaller and their capacities can be made smaller, and the airbag device 20 as a whole can be made smaller, and the storage space and cost can be reduced.

【0018】しかも、頭部用バッグ24を略扇状、即ち
膨出方向に沿って順次大きくなる形状としたので、シー
トバック14の傾きに拘わらず常に乗員頭部に対応した
形で展開できるようになり、この点でも、頭部用バッグ
24の小型化を図ることが可能となる。
Moreover, since the head bag 24 has a substantially fan-like shape, that is, a shape that gradually increases along the bulging direction, regardless of the inclination of the seat back 14, the head bag 24 can be always deployed in a shape corresponding to the occupant's head. Also in this respect, it is possible to reduce the size of the head bag 24.

【0019】また、本第1の実施形態では、頭部用バッ
グ24の上側及び下側の側縁を各々膨出方向(車両内側
面)に沿って連続的に静止系に取付けたので、頭部用バ
ッグ24の車両外側方向への移動を確実に拘束できる。
Further, in the first embodiment, the upper and lower side edges of the head bag 24 are continuously attached to the stationary system along the bulging direction (inside surface of the vehicle). It is possible to reliably restrain the movement of the part bag 24 in the vehicle outer direction.

【0020】なお、上記第1の実施形態では、胸部用バ
ッグ22を展開した後に頭部用バッグ24を展開した
が、胸部用バッグ22及び頭部用バッグ24を同時に展
開するようにしてもよい。但し、胸部用バッグ22の展
開後に頭部用バッグ24を展開すれば、乗員頭部が車室
内側部に移動してくる前に胸部用バッグ22を乗員胸部
とサイドドアとの間に挟持して確実に固定できる。ま
た、上記第1の実施形態では、シートバック14内に頭
部用バッグ24を収納したが、ヘッドレスト16(図
1)内部に収納してヘッドレストの側部から展開するよ
うに構成してもよい。要は、シートクッション、シート
バック及びヘッドレストから成る車両用シート内の何処
かに収納すればよい。また、上記第1の実施形態では、
胸部用バッグ22用のインフレータ40と頭部用バッグ
24用のインフレータ42とを別個に設けたが、単一の
インフレータにより頭部用及び胸部用の両バッグ22、
24にガスを導入してもよい。 〔第2の実施形態〕図6には本第2の実施形態に係る側
突用エアバッグ装置21の概略構成が示されている。な
お、上記第1の実施形態と同一の箇所は同一の符号を付
して説明を省略する。本第2の実施形態では、頭部用バ
ッグ24の両側部を直接胸部用バッグ22及びシートバ
ックフレーム(図示せず)に固定すると共に、胸部用バ
ッグ22及び頭部用バッグ24間の隔壁にバッグ22、
24内を連通する連通孔50を形成している。また、シ
ートバック14内に単一のインフレータ40を設け、イ
ンフレータ40からのガスを胸部用バッグ22に導入で
きるようにしている。本第2の実施形態によれば、胸部
用バッグ22を膨張させた後に、胸部用バッグ22の収
縮に伴って胸部用バッグ22内のガスを連通孔50を通
じて頭部用バッグ24内に導入することができるので、
インフレータ40の数を減らすことができる。
In the first embodiment, the chest bag 22 is expanded and then the head bag 24 is expanded. However, the chest bag 22 and the head bag 24 may be expanded at the same time. . However, if the head bag 24 is deployed after the chest bag 22 is deployed, the chest bag 22 is sandwiched between the occupant's chest and the side door before the occupant's head moves to the inside of the passenger compartment. Can be securely fixed. In the first embodiment, the head bag 24 is stored in the seat back 14, but the head bag 24 may be stored inside the headrest 16 (FIG. 1) and deployed from the side portion of the headrest. . In short, it may be stored somewhere in the vehicle seat including the seat cushion, the seat back, and the headrest. In the first embodiment,
Although the inflator 40 for the chest bag 22 and the inflator 42 for the head bag 24 are separately provided, both the head bag 22 and the chest bag 22 are provided by a single inflator.
Gas may be introduced into 24. [Second Embodiment] FIG. 6 shows a schematic structure of a side impact airbag device 21 according to a second embodiment of the present invention. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In the second embodiment, both side portions of the head bag 24 are directly fixed to the chest bag 22 and a seat back frame (not shown), and a partition wall between the chest bag 22 and the head bag 24 is provided. Bag 22,
A communication hole 50 communicating with the inside of 24 is formed. Further, a single inflator 40 is provided in the seat back 14 so that gas from the inflator 40 can be introduced into the chest bag 22. According to the second embodiment, after the chest bag 22 is inflated, the gas in the chest bag 22 is introduced into the head bag 24 through the communication hole 50 as the chest bag 22 contracts. Because you can
The number of inflators 40 can be reduced.

【0021】[0021]

【発明の効果】以上説明したように本発明によれば、乗
員頭部に対応する領域に車両外側への移動を規制した状
態で袋体を保持するようにしたので、袋体の小型・小容
量化、ひいては低コスト化を図ることができる、という
優れた効果を奏する。
As described above, according to the present invention, since the bag body is held in the area corresponding to the occupant's head while the movement toward the outside of the vehicle is restricted, the bag body is small and small. It has an excellent effect that the capacity can be reduced and the cost can be reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の第1実施形態に係る側突用エアバッグ
装置が適用された車両用シートを示す斜視図である。
FIG. 1 is a perspective view showing a vehicle seat to which a side impact airbag device according to a first embodiment of the present invention is applied.

【図2】側突用エアバッグ装置の概略構成を示す図であ
り、車両用シートに適用した例が示されている。
FIG. 2 is a diagram showing a schematic configuration of a side impact airbag device, showing an example applied to a vehicle seat.

【図3】側突用エアバッグ装置が適用された車両用シー
トの側面図である。
FIG. 3 is a side view of a vehicle seat to which a side impact airbag device is applied.

【図4】側突用エアバッグ装置の動作を説明するための
図であり、(A)は通常走行状態、(B)は胸部用バッ
グを展開した状態を、(C)は胸部用バッグの展開後、
頭部用バッグを展開した状態を各々示している。
4A and 4B are views for explaining the operation of the side collision airbag device. FIG. 4A is a normal traveling state, FIG. 4B is a state in which the chest bag is inflated, and FIG. 4C is a chest bag. After deployment,
The state which expanded the bag for heads is shown, respectively.

【図5】車両側突時の乗員のドア側への移動状態と側突
用エアバッグ装置の動作状態との関係を示した図であ
る。
FIG. 5 is a diagram showing a relationship between a moving state of an occupant toward a door and an operating state of a side collision airbag device during a vehicle side collision.

【図6】本発明の第2実施形態に係る側突用エアバッグ
装置が適用された車両用シートを示す斜視図である。
FIG. 6 is a perspective view showing a vehicle seat to which a side impact airbag device according to a second embodiment of the present invention is applied.

【符号の説明】[Explanation of symbols]

10 車両用シート 14 シートバック 16 ヘッドレスト 20 側突用エアバッグ装置 22 胸部用バッグ(第1の袋体) 24 頭部用バッグ(第2の袋体) 26、28 連結シート 40、42 インフレータ(ガス供給手段) 10 Vehicle Seat 14 Seat Back 16 Headrest 20 Side Impact Airbag Device 22 Chest Bag (First Bag) 24 Head Bag (Second Bag) 26, 28 Connecting Sheet 40, 42 Inflator (Gas) Supply means)

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 車両の側突時に車両用シート側部から膨
出し乗員胸部に対応する車両内側面の内側領域に展開す
る第1の袋体と、 前記車両用シート側部から膨出し乗員頭部に対応する前
記第1の袋体の上方領域に展開すると共に、展開した状
態で車両外側への移動が拘束されるよう前記車両用シー
ト及び第1の袋体に各々接続された第2の袋体と、 前記第1の袋体及び第2の袋体の内部にガスを供給する
ガス供給手段と、 を備えた側突用エアバッグ装置。
1. A first bag body that bulges from a side portion of a vehicle seat when the vehicle crashes into a vehicle, and expands to an inner region of an inner surface of the vehicle corresponding to a chest of an occupant; A second bag connected to the vehicle seat and the first bag body so as to be deployed in an upper region of the first bag body corresponding to a portion and restrain movement to the outside of the vehicle in the deployed state. An airbag apparatus for a side impact, comprising: a bag body; and gas supply means for supplying gas into the first bag body and the second bag body.
JP7296888A 1995-11-15 1995-11-15 Air bag device for side impact Pending JPH09136595A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP7296888A JPH09136595A (en) 1995-11-15 1995-11-15 Air bag device for side impact
DE19646698A DE19646698A1 (en) 1995-11-15 1996-11-12 Side airbag arrangement for motor vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7296888A JPH09136595A (en) 1995-11-15 1995-11-15 Air bag device for side impact

Publications (1)

Publication Number Publication Date
JPH09136595A true JPH09136595A (en) 1997-05-27

Family

ID=17839465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7296888A Pending JPH09136595A (en) 1995-11-15 1995-11-15 Air bag device for side impact

Country Status (2)

Country Link
JP (1) JPH09136595A (en)
DE (1) DE19646698A1 (en)

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