JPH04212651A - Air bag type rider protector - Google Patents
Air bag type rider protectorInfo
- Publication number
- JPH04212651A JPH04212651A JP3021028A JP2102891A JPH04212651A JP H04212651 A JPH04212651 A JP H04212651A JP 3021028 A JP3021028 A JP 3021028A JP 2102891 A JP2102891 A JP 2102891A JP H04212651 A JPH04212651 A JP H04212651A
- Authority
- JP
- Japan
- Prior art keywords
- bag
- gas
- gas generator
- auxiliary
- airbag
- 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
Links
- 230000001012 protector Effects 0.000 title 1
- 239000004744 fabric Substances 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 37
- 238000001914 filtration Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Landscapes
- Air Bags (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、自動車等の衝突時に作
動し、乗員を衝撃より保護するエアバッグ式乗員保護装
置の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an air bag type occupant protection device that is activated in the event of a collision of an automobile or the like to protect an occupant from impact.
【０００２】0002
【従来の技術】周知の如く、エアバッグ式乗員保護装置
は、運転席用であれば４０〜６０ｌ、客席用であれば１
５０〜１８０ｌ容量の可撓性袋からなるバッグ基布内に
ガス発生器を内蔵してなり、車両等の衝突時に於いては
その衝撃感知に応じて瞬時にガス発生器内のガス発生剤
を発火燃焼させ、発生するガスによりバッグを膨脹展開
させ、この展開したバッグ基布により乗員を拘束して乗
員を保護するものである。そして、かかるエアバッグは
衝突から３０ミリ秒前後の間に一旦完全にバッグ基布を
膨脹展開させてから、拘束された乗員の前屈による加圧
により内部のガスの一部分をエアバッグの底部に設けた
通常内径２０〜６０ミリメートルの円形で、かつ複数個
の排気孔（以下ベントホールと称する）から人体に排出
ガスが当たらない方向で車内に連続的に排出し、これに
よって乗員に対する膨脹したエアバッグの反発による傷
害並びにエネルギー吸収による高い衝撃力の発生を防止
する様になっている。エアバッグに内蔵されるガス発生
器はバッグを極めて急速に膨脹させる為、通常ペレット
状、ディスク状等のガス発生剤が用いられる。また、そ
の燃焼時間を短縮する為、ガス発生器の燃焼圧力を高め
て使用することから、通常ミスト状または微粒子状の物
質が燃焼ガスに同伴排出される。これらの物質をガス発
生器の外部に出さないため、特開昭５１−７２０３０、
特開昭５５−１１０６４２等に見られるように、ガス発
生器内のガス流路に幾重もの金網や多孔性物質の濾過装
置を設けている。この濾過装置は非常にかさばり、重く
、そして高価なものである。しかるに、最近、ガス発生
器の小型軽量化及びコスト低減がユーザー側から強く要
求されてきている。[Prior Art] As is well known, an airbag type occupant protection device has a capacity of 40 to 60 liters for the driver's seat, and 1 liter for the passenger seat.
A gas generator is built into the base fabric of a flexible bag with a capacity of 50 to 180 liters, and in the event of a collision with a vehicle, etc., the gas generating agent in the gas generator is instantly released in response to the sensed impact. The bag is ignited and burned, and the gas generated causes the bag to expand and expand, and the expanded bag base fabric restrains and protects the occupant. In this airbag, the bag base fabric is completely inflated and deployed within 30 milliseconds after the collision, and then a portion of the internal gas is released into the bottom of the airbag by pressurization caused by the restrained occupant bending forward. Exhaust gas is continuously discharged into the vehicle from a plurality of circular exhaust holes (hereinafter referred to as vent holes) with an inner diameter of 20 to 60 mm in a direction that does not hit the human body, thereby releasing the expanded air to the occupants. This is designed to prevent injuries caused by the rebound of the bag and the occurrence of high impact forces due to energy absorption. Since the gas generator built into the airbag inflates the bag extremely rapidly, a gas generating agent in the form of pellets, discs, etc. is usually used. Furthermore, in order to shorten the combustion time, the combustion pressure of the gas generator is increased and used, and therefore mist-like or particulate matter is usually discharged along with the combustion gas. In order to prevent these substances from coming out of the gas generator, Japanese Patent Application Laid-Open No. 51-72030,
As seen in Japanese Patent Laid-Open No. 55-110642, etc., a gas flow path within a gas generator is provided with multiple layers of wire mesh or a filtering device made of porous material. This filtration device is very bulky, heavy, and expensive. However, recently, there have been strong demands from users to reduce the size, weight, and cost of gas generators.
【０００３】0003
【発明が解決しようとする課題】本発明は、この要求に
答えるため、ガス発生器内の濾過装置を小型軽量化した
場合に、濾過が不充分となって極微量のミスト状または
微粒子状の物質がガス発生器外へ排出されても支障のな
いようなエアバッグ式乗員保護装置を提供することを課
題とする。[Problems to be Solved by the Invention] In order to meet this demand, the present invention aims to solve the problem of reducing the size and weight of a filtration device in a gas generator, resulting in insufficient filtration and a very small amount of mist or fine particles. It is an object of the present invention to provide an airbag type occupant protection device that does not cause any problem even if substances are discharged outside a gas generator.
【０００４】0004
【課題を解決するための手段】本発明者らはエアバッグ
式乗員保護装置の改良に関し鋭意検討を重ねた結果、エ
アバッグのベントホール或いはその他の放出ガスを通過
させる通気性部分の外部に接続して、可撓性で且つエア
バッグが乗員の衝突による衝撃力を吸収し終わるまでに
排出するガスを収容するに必要十分な容量（通常発生す
る全ガス量の３０％以下） を有する補助バッグを、エ
アバッグの膨脹展開時に補助バッグの展開を阻害しない
位置に１個以上接着剤あるいは糸を用いて気密に取り付
けることにより、発生ガスを車内に放出することなしに
エアバッグの機能が発揮されることを発見し、本発明に
到ったものである。[Means for Solving the Problems] As a result of extensive research into improving airbag-type occupant protection devices, the inventors of the present invention have discovered that the vent hole of the airbag or other vent hole that is connected to the outside of the vent hole through which the released gas passes. An auxiliary bag that is flexible and has sufficient capacity (30% or less of the total amount of gas normally generated) to accommodate the gas exhausted until the airbag finishes absorbing the impact force caused by the collision of the occupant. By using one or more adhesives or threads to airtightly attach the auxiliary bag to a position that will not obstruct the expansion of the auxiliary bag when the airbag is inflated and deployed, the airbag function can be achieved without releasing generated gas into the vehicle. This discovery led to the present invention.
【０００５】即ち本発明は、内蔵するガス発生器から発
生したガスにより一旦膨張してから、ガスの一部を放出
して人体の衝撃力を吸収する構造のエアバッグに於いて
、バッグ基布外にその放出ガスの一部又は全部を収容す
る可撓性袋を少なくとも１袋以上補助バッグとして取り
付けてなることを特徴とするエアバッグ式乗員保護装置
に係るものである。That is, the present invention provides an airbag having a structure in which the bag base fabric absorbs the impact force of the human body by once inflating with gas generated from a built-in gas generator and then releasing a part of the gas. This invention relates to an airbag-type occupant protection device characterized in that at least one flexible bag is attached to the outside as an auxiliary bag to accommodate part or all of the released gas.
【０００６】以下図面により本発明を具体的に説明する
が、本発明は図面に示した例に限定されるものではない
。The present invention will be explained in detail below with reference to the drawings, but the present invention is not limited to the examples shown in the drawings.
【０００７】図１〜図３は本発明の運転者席用エアバッ
グ式乗員保護装置の一例を示すが、本発明に使用するガ
ス発生器２は軽量且つ小型の構造のもので、バッグ１を
膨脹させるに十分な量のガス発生剤、点火装置及び発生
ガスの濾過装置から主として構成されバッグ１内に内蔵
されている。かかるガス発生器２はその外周をバッグ１
で覆われてステアリングホイール６の中央に取り付けら
れ、その上にカバー５が設けられるが（図１）、本発明
のエアバッグ式乗員保護装置に於いては、バッグ１のベ
ントホール４に補助バッグ３が接続して取り付けられて
いる（図７参照）。図７は図１の折り畳まれたバッグ１
、補助バッグ３及びガス発生器２の配置の状態を示す略
示図で、補助バッグ３はバッグ１のベントホール４に接
続されている。FIGS. 1 to 3 show an example of the air bag type occupant protection device for the driver's seat according to the present invention. The gas generator 2 used in the present invention has a lightweight and compact structure, and the bag 1 is The bag 1 mainly includes a gas generating agent in an amount sufficient for expansion, an ignition device, and a filtering device for generated gas. Such a gas generator 2 has a bag 1 around its outer periphery.
The airbag type occupant protection device of the present invention has an auxiliary bag attached to the vent hole 4 of the bag 1. 3 are connected and installed (see Figure 7). Figure 7 shows the folded bag 1 in Figure 1.
, a schematic view showing the arrangement of the auxiliary bag 3 and the gas generator 2, in which the auxiliary bag 3 is connected to the vent hole 4 of the bag 1.
【０００８】いま自動車が衝突し点火信号が点火装置に
送られると点火装置が発火し、その火炎によりガス発生
剤が燃焼を開始し、ミスト状或いは微粒子状の燃焼生成
物を含む発生ガスは濾過装置を通り、濾過された後バッ
グ１に流入し、 バッグ１を急速に図２に示す如く膨
脹展開させる。尚この際補助バッグ３は、この段階での
バッグ内圧が低く且つベントホール４が存在するため、
図２に示す如く殆ど畳まれた状態でとどまる。引き続き
次の段階で図３に示す如く人体が展開したバッグ１を押
し潰す状態になると、バッグ内部のガス圧が上昇し、ガ
スはベントホール４を経て補助バッグ３に流入し、これ
を図３に示す如く展開させる。この際バッグ１は収縮し
、人体の受ける加速度の増大を抑制する。しかもこの際
バッグ内のガスはバッグ１と補助バッグ３の内部に封入
されるから、車内に流出することはない。[0008] When a car collides and an ignition signal is sent to the ignition device, the ignition device ignites, the flame starts combustion of the gas generating agent, and the generated gas containing combustion products in the form of mist or particulates is filtered. After passing through the device and being filtered, it flows into the bag 1, and the bag 1 is rapidly inflated and deployed as shown in FIG. At this time, the auxiliary bag 3 has a low internal pressure at this stage and has a vent hole 4, so
As shown in FIG. 2, it remains almost folded. In the next step, when the human body crushes the unfolded bag 1 as shown in FIG. 3, the gas pressure inside the bag increases, and the gas flows into the auxiliary bag 3 through the vent hole 4. Expand as shown. At this time, the bag 1 contracts and suppresses an increase in acceleration applied to the human body. Moreover, at this time, the gas inside the bag is sealed inside the bag 1 and the auxiliary bag 3, so it will not leak into the vehicle.
【０００９】図４〜６は本発明の客席用エアバッグ式乗
員保護装置の一例を示すが、その構造及び作動は図１〜
３に示したものと同様である。FIGS. 4 to 6 show an example of the passenger seat airbag type occupant protection device of the present invention, and the structure and operation thereof are shown in FIGS. 1 to 6.
This is similar to that shown in 3.
【００１０】0010
【発明の効果】本発明によれば、排出ガスのベントホー
ルに補助バッグを接続して取り付けることにより、ガス
発生器内の濾過装置を小型軽量化でき、ひいてはガス発
生器全体を小型軽量化できるという効果を有する。[Effects of the Invention] According to the present invention, by connecting and attaching an auxiliary bag to the exhaust gas vent hole, the filtration device in the gas generator can be made smaller and lighter, and the entire gas generator can be made smaller and lighter. It has this effect.
【図１】本発明の運転者席用バッグ装置の一例の構成を
示す側面略示図である。FIG. 1 is a schematic side view showing the configuration of an example of a bag device for a driver's seat according to the present invention.
【図２】バッグの展開直後の状態を示す略示図である。FIG. 2 is a schematic view showing the state of the bag immediately after it is unfolded.
【図３】補助バッグの展開時の状態を示す略示図である
。FIG. 3 is a schematic view showing the state of the auxiliary bag when it is expanded.
【図４】本発明の客席用バッグ装置の一例の構成を示す
側面略示図である。FIG. 4 is a schematic side view showing the configuration of an example of the passenger seat bag device of the present invention.
【図５】バッグの展開直後の状態を示す略示図である。FIG. 5 is a schematic view showing the state of the bag immediately after it is unfolded.
【図６】補助バッグの展開時の状態を示す略示図である
。FIG. 6 is a schematic view showing the state of the auxiliary bag when it is expanded.
【図７】図１のバッグ装置の要部断面略示図である。FIG. 7 is a schematic cross-sectional view of essential parts of the bag device of FIG. 1;
１ バッグ ２ ガス発生器 ３ 補助バッグ ４ ベントホール ５ カバー ６ ステアリングホイール 1 Bag 2 Gas generator 3 Auxiliary bag 4 Vent hole 5 Cover 6 Steering wheel
Claims (1)
により膨張展開後、ガスの一部を放出して人体の衝撃力
を吸収する構造のエアバッグに於いて、バッグ基布外に
その放出ガスの一部又は全部を収容する可撓性袋を少な
くとも１袋以上補助バッグとして取り付けてなることを
特徴とするエアバッグ式乗員保護装置。Claim 1: In an airbag structured to absorb the impact force of a human body by releasing a portion of the gas after being inflated and deployed by gas generated from a built-in gas generator, the released gas is released outside the bag base fabric. 1. An airbag-type occupant protection device, characterized in that at least one flexible bag for accommodating part or all of an auxiliary bag is attached as an auxiliary bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3021028A JPH04212651A (en) | 1990-02-16 | 1991-02-14 | Air bag type rider protector |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3554890 | 1990-02-16 | ||
| JP2-35548 | 1990-02-16 | ||
| JP3021028A JPH04212651A (en) | 1990-02-16 | 1991-02-14 | Air bag type rider protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04212651A true JPH04212651A (en) | 1992-08-04 |
Family
ID=26358035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3021028A Pending JPH04212651A (en) | 1990-02-16 | 1991-02-14 | Air bag type rider protector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04212651A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5605350A (en) * | 1995-05-30 | 1997-02-25 | General Motors Corporation | Air bag fold and method |
| JP2006508862A (en) * | 2003-01-14 | 2006-03-16 | タカタ・ペトリ アーゲー | Airbag system |
| WO2017090772A1 (en) * | 2015-11-26 | 2017-06-01 | オートリブ ディベロップメント エービー | Airbag device |
| US12043195B2 (en) | 2022-10-14 | 2024-07-23 | Toyota Jidosha Kabushiki Kaisha | Airbag device and passenger protection device |
-
1991
- 1991-02-14 JP JP3021028A patent/JPH04212651A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5605350A (en) * | 1995-05-30 | 1997-02-25 | General Motors Corporation | Air bag fold and method |
| JP2006508862A (en) * | 2003-01-14 | 2006-03-16 | タカタ・ペトリ アーゲー | Airbag system |
| WO2017090772A1 (en) * | 2015-11-26 | 2017-06-01 | オートリブ ディベロップメント エービー | Airbag device |
| JPWO2017090772A1 (en) * | 2015-11-26 | 2018-09-27 | オートリブ ディベロップメント エービー | Airbag device |
| JP2019142510A (en) * | 2015-11-26 | 2019-08-29 | オートリブ ディベロップメント エービー | Airbag device |
| US10836343B2 (en) | 2015-11-26 | 2020-11-17 | Autoliv Development Ab | Airbag device |
| US12043195B2 (en) | 2022-10-14 | 2024-07-23 | Toyota Jidosha Kabushiki Kaisha | Airbag device and passenger protection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3935967B2 (en) | 2-chamber inflator body | |
| JP2710454B2 (en) | Vehicle passenger restraint mechanism | |
| US5957493A (en) | Airbag check valve | |
| US5286054A (en) | Aspirating/venting motor vehicle passenger airbag module | |
| JP5624019B2 (en) | Output adaptive inflator | |
| WO1991017070A1 (en) | Air bag type rider-protective device | |
| US5058921A (en) | Linear bilateral inflator module | |
| US6776434B2 (en) | Driver side airbag with a baffle | |
| JPH06305387A (en) | Air bag for vehicle | |
| US6283499B1 (en) | Airbag device having an inner flexible heat shield and flow direction bag | |
| JPH09164899A (en) | Gas bag protective device for horizontal direction shock | |
| JPH02169347A (en) | Gas generator | |
| US5378015A (en) | Inflatable restraint system inflator emission treatment | |
| JP2005528276A (en) | Gas generating material filter assembly, combination of filter and closing lid, and airbag inflator | |
| JPH10510232A (en) | Airbag module | |
| JP2007511419A (en) | Airbag | |
| US9221420B2 (en) | Airbag inflation systems and methods | |
| JP4170586B2 (en) | Small inflator | |
| JPH04212651A (en) | Air bag type rider protector | |
| JP2865153B2 (en) | Gas generator for airbag deployment | |
| JP2001151069A (en) | Gas generator for air bag, and air bag device | |
| JPH04221250A (en) | Air bag device | |
| KR0174063B1 (en) | A car airbag | |
| JPH01314646A (en) | Air bag device for vehicle | |
| US7118128B2 (en) | Low leakage airbag module |