JPH06170129A - Filter for gas generator and gas generator - Google Patents
Filter for gas generator and gas generatorInfo
- Publication number
- JPH06170129A JPH06170129A JP4322093A JP32209392A JPH06170129A JP H06170129 A JPH06170129 A JP H06170129A JP 4322093 A JP4322093 A JP 4322093A JP 32209392 A JP32209392 A JP 32209392A JP H06170129 A JPH06170129 A JP H06170129A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- filter
- chamber
- cooling
- gas generator
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、例えば自動車の乗員
保護用エアバッグのガス発生器に用いられる冷却用のフ
ィルタ及びそのフィルタを備えたガス発生器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling filter for use in a gas generator for an occupant protection airbag of an automobile and a gas generator equipped with the filter.
【０００２】[0002]
【従来の技術】図８，９に示すように、従来のガス発生
器用のフィルタ３１は、内周側から外周側へと巻回状態
で図示しない冷却捕集室内に収容されている。そして、
フィルタ３１の巻き始め部３２がスポット溶接による溶
接部３３で接合されるとともに、フィルタ３１の巻き終
わり部３４がスポット溶接による３箇所の溶接部３５で
接合固定されている（特開平２−１５５８６１号公
報）。2. Description of the Related Art As shown in FIGS. 8 and 9, a conventional filter 31 for a gas generator is housed in a cooling collection chamber (not shown) in a wound state from the inner peripheral side to the outer peripheral side. And
The winding start portion 32 of the filter 31 is joined by a welding portion 33 by spot welding, and the winding end portion 34 of the filter 31 is joined and fixed by three welding portions 35 by spot welding (Japanese Patent Laid-Open No. 2-155861). Gazette).
【０００３】[0003]
【発明が解決しようとする課題】ところが、このガス発
生器用のフィルタ３１は、金網の巻き終わり部３４の接
合が単にスポット溶接による溶接部３５によって止めて
あるのみであり、従って端部の金網は部分的にしか固定
されていなかった。However, in the filter 31 for the gas generator, the winding end portion 34 of the wire mesh is simply stopped by the welded portion 35 by spot welding, and therefore the wire mesh at the end is It was only partially fixed.
【０００４】そのため、フィルタ３１の巻き終わり部３
４が冷却捕集室の外周壁に設けられたガス排出口に位置
した場合、ガス発生器の作動時に排出されるガスの流出
圧力で金網が解れたり、著しい場合には金網の単線が外
れて外に飛び出す場合があった。その結果、エアバッグ
を損傷したり、最悪の場合には乗員を傷つけるおそれが
あるという問題があった。Therefore, the winding end portion 3 of the filter 31
When 4 is located at the gas outlet provided on the outer peripheral wall of the cooling and collecting chamber, the wire mesh is unraveled by the outflow pressure of the gas discharged when the gas generator is operated, or in a remarkable case, the wire of the wire mesh is disconnected. Sometimes it jumped out. As a result, there is a problem that the airbag may be damaged or, in the worst case, the occupant may be injured.
【０００５】この発明は上記従来の問題に着目してなさ
れたものであって、その目的はガス発生器が作動した際
のガスの流出圧力で、冷却用のフィルタの金網が解れた
り、飛び出したりすることなく、安全かつ確実にガスを
濾過することができるガス発生器用のフィルタ及びガス
発生器を提供することにある。The present invention has been made by paying attention to the above-mentioned conventional problems, and its purpose is to prevent the wire mesh of the cooling filter from being loosened or popped out by the outflow pressure of the gas when the gas generator is operated. It is to provide a filter and a gas generator for a gas generator that can safely and reliably filter gas without performing the above.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に第１の発明では、容器内の中心に位置し、点火手段を
有する点火室と、その外周に位置し、ガス発生剤を内包
する燃焼室と、さらにその外周に位置し、金網等からな
る冷却捕集用のフィルタが内周側から外周側へと巻回さ
れて収容された冷却捕集室と、冷却捕集室の周壁に設け
られたガス排出口とを備え、前記燃焼室で発生したガス
を冷却捕集室に導入し、ガス排出口を介して噴出するガ
ス発生器において、前記フィルタの巻き終わり部を内側
に折り返したことを特徴とする。In order to achieve the above object, in the first aspect of the present invention, the ignition chamber is located at the center of the container and has the ignition means, and is located at the outer periphery of the ignition chamber and contains the gas generating agent. The combustion chamber and a cooling collection chamber which is located further on the outer periphery of the cooling collection chamber and which is wound around the inner circumference side to the outer circumference side of the filter for cooling and collection and which is composed of a wire mesh and the like. With a gas outlet provided, the gas generated in the combustion chamber is introduced into the cooling and collecting chamber, and in the gas generator that jets out through the gas outlet, the winding end portion of the filter is folded back inward. It is characterized by
【０００７】また、第２の発明では、容器内の中心に位
置し、点火手段を有する点火室と、その外周に位置し、
ガス発生剤を内包する燃焼室と、さらにその外周に位置
し、金網等からなる冷却捕集用のフィルタが内周側から
外周側へと巻回されて収容された冷却捕集室と、冷却捕
集室の周壁に設けられたガス排出口とを備え、前記フィ
ルタの巻き終わり部を内側に折り返したことを特徴とす
る。According to the second aspect of the invention, the ignition chamber is located at the center of the container and has the ignition means, and is located at the outer periphery of the ignition chamber.
A combustion chamber that contains a gas generating agent, and a cooling collection chamber that is located on the outer periphery of the combustion chamber and that houses a filter for cooling and collection that includes a wire mesh and is wound from the inner circumference side to the outer circumference side. A gas discharge port provided on the peripheral wall of the collection chamber is provided, and the winding end portion of the filter is folded back inward.
【０００８】以下、この発明のガス発生器用フィルタ及
びガス発生器について、図１〜６に基づいて説明する。
図１〜３は、この発明のガス発生器用のフィルタを装着
したガス発生器の一例を示す図である。すなわち、図１
は、ガス発生器を示す平断面図（図２のＡ−Ａ線断面
図）、図２は図１のガス発生器の正断面図、図３はガス
発生器の正面図である。The gas generator filter and the gas generator of the present invention will be described below with reference to FIGS.
1 to 3 are views showing an example of a gas generator equipped with a filter for a gas generator of the present invention. That is, FIG.
2 is a plan sectional view showing the gas generator (a sectional view taken along the line AA in FIG. 2), FIG. 2 is a front sectional view of the gas generator of FIG. 1, and FIG. 3 is a front view of the gas generator.
【０００９】ガス発生器１のハウジング２は、断面Ｓ字
状の本体２ａと、複数の部屋を区画形成する蓋体２ｂ，
２ｃ，２ｄが互いに溶接接合されて構成され、密閉状態
となっている。このハウジング２の中心位置には点火室
３、その外周には燃焼室４、さらにその外周には冷却捕
集室５が同心円状に区画形成されている。点火室３内に
は点火手段を構成する電気着火式のスクイブ３ａとその
上部にはボロン硝石からなる点火剤３ｂが収容され、ス
クイブ３ａの着火により点火剤３ｂが点火される。The housing 2 of the gas generator 1 includes a main body 2a having an S-shaped cross section, a lid 2b for partitioning and forming a plurality of chambers,
2c and 2d are welded to each other and are in a hermetically sealed state. An ignition chamber 3 is formed in the center of the housing 2, a combustion chamber 4 is formed on the outer periphery thereof, and a cooling collection chamber 5 is concentrically formed on the outer periphery thereof. In the ignition chamber 3, an electric ignition type squib 3a which constitutes an ignition means and an igniting agent 3b made of boron nitrate are stored in the upper part thereof, and the igniting agent 3b is ignited by the ignition of the squib 3a.
【００１０】燃焼室４内にはアジ化ナトリウムからなる
ガス発生剤６が収容されている。点火室３の周壁には点
火室オリフィス７が透設され、点火室３での点火剤３ｂ
の燃焼による燃焼ガスが点火室オリフィス７を介して燃
焼室４に伝搬され、ガス発生剤６が燃焼する。燃焼室４
の周壁には燃焼室オリフィス８が透設されている。冷却
捕集室５には冷却用のフィルタ９が配置され、ガス発生
剤６の燃焼により発生する窒素ガスからなる燃焼ガスが
燃焼室オリフィス８を介して冷却捕集室５に導入され
る。冷却捕集室５の周壁には多数のガス排出口１０が貫
設され、冷却捕集室５で冷却された燃焼ガスがガス排出
口１０から図示しないエアバッグ内に噴出される。な
お、点火室３の下部には蓋２３がハウジング２の本体２
ａに螺合固定されている。また、フィルタ９の上下位置
には、ガスケット２４が配置されている。A gas generating agent 6 made of sodium azide is contained in the combustion chamber 4. An ignition chamber orifice 7 is provided on the peripheral wall of the ignition chamber 3, and the ignition agent 3b in the ignition chamber 3 is
Combustion gas generated by the combustion of is propagated to the combustion chamber 4 through the ignition chamber orifice 7, and the gas generating agent 6 burns. Combustion chamber 4
A combustion chamber orifice 8 is transparently provided on the peripheral wall of the. A cooling filter 9 is arranged in the cooling collection chamber 5, and a combustion gas composed of nitrogen gas generated by the combustion of the gas generating agent 6 is introduced into the cooling collection chamber 5 through a combustion chamber orifice 8. A large number of gas outlets 10 are provided through the peripheral wall of the cooling / collecting chamber 5, and the combustion gas cooled in the cooling / collecting chamber 5 is ejected from the gas outlet 10 into an airbag (not shown). In addition, a lid 23 is provided below the ignition chamber 3 in the main body 2 of the housing 2.
It is screwed and fixed to a. A gasket 24 is arranged above and below the filter 9.
【００１１】次に、図４は巻回状態のフィルタ９を示す
平面図、図５はフィルタ９の端部を示す部分拡大断面図
である。図６は図５のＢ矢視図である。図５において、
フィルタ９は細目の平織り金網１１の最内周に位置する
巻き始め部２０が溶接部１５により接合固定され、順に
外周側へ畳織り金網１２、金属繊維焼結布１３及びセラ
ミック繊維紙１４等が組み合わされて巻回状態に形成さ
れている。巻き終わり部２１は、その端部２２より所定
の長さだけ内側に折り返されている。この折り返しの長
さは、通常１０mm程度である。Next, FIG. 4 is a plan view showing the filter 9 in a wound state, and FIG. 5 is a partially enlarged sectional view showing an end portion of the filter 9. FIG. 6 is a view on arrow B of FIG. In FIG.
In the filter 9, the winding start portion 20 located at the innermost circumference of the fine plain weave wire mesh 11 is joined and fixed by the welding portion 15, and the tatami weave wire mesh 12, the metal fiber sintered cloth 13, the ceramic fiber paper 14 and the like are sequentially provided on the outer peripheral side. They are combined and formed into a wound state. The winding end portion 21 is folded back inward from the end portion 22 by a predetermined length. The length of this folding back is usually about 10 mm.
【００１２】なお、この折り返し部は、フィルタ９がガ
ス発生器１に組み込まれるまでの間、外れて元に戻らな
いよう必要に応じて溶接により接合固定される。この溶
接は、スポット溶接でも、フィルタ９の高さ方向に数ミ
リの幅で帯状に溶接してもよい。If necessary, the folded-back portion is joined and fixed by welding so as not to come off and return until the filter 9 is assembled into the gas generator 1. This welding may be spot welding or band-shaped welding with a width of several millimeters in the height direction of the filter 9.
【００１３】図７に示すように、フィルタ９を巻回状態
にするために、まず平織り金網１１に畳織り金網１２、
金属繊維焼結布１３及びセラミック繊維紙１４を一体に
した金網を一周巻回し、その状態で巻始め部２０の平織
り金網１１同士をスポット溶接により接合する。次い
で、これを芯として、さらにその外周に巻回して、最後
に平織り金網１１のみを３周にわたって巻回する。そし
て、図５に示すように、平織り金網１１の端部を内側に
折り曲げる。このようにして、巻回状態のフィルタ９が
得られる。As shown in FIG. 7, in order to put the filter 9 into a wound state, first, the plain weave wire net 11 is laid on the tatami weave wire net 12,
A wire mesh in which the metal fiber sintered cloth 13 and the ceramic fiber paper 14 are integrated is wound around once, and in that state, the plain weave wire meshes 11 of the winding start portion 20 are joined by spot welding. Next, using this as a core, the wire is further wound around the outer periphery, and finally only the plain weave wire net 11 is wound over three turns. Then, as shown in FIG. 5, the end portion of the plain weave wire net 11 is bent inward. In this way, the wound filter 9 is obtained.
【００１４】そして、このガス発生器１においては、ス
クイブ３ａに点火電流が流れると、スクイブ３ａが作動
して点火剤３ｂを着火する。点火剤３ｂの燃焼ガスは点
火室オリフィス７を通して燃焼室４内に伝搬される。こ
れにより、ガス発生剤６が燃焼して燃焼ガス及び燃焼残
渣を生成する。燃焼ガス及び残渣は燃焼室オリフィス８
を通して冷却捕集室５に入りフィルタ９により冷却濾過
される。そして、燃焼ガスはガス排出口１０より図示し
ないエアバッグ内に排出され、エアバッグは膨張展開す
る。In the gas generator 1, when an ignition current flows through the squib 3a, the squib 3a operates to ignite the igniting agent 3b. The combustion gas of the igniter 3b is propagated into the combustion chamber 4 through the ignition chamber orifice 7. As a result, the gas generant 6 burns to generate combustion gas and combustion residues. Combustion gas and residue are in the combustion chamber orifice 8
It enters into the cooling collection chamber 5 and is cooled and filtered by the filter 9. Then, the combustion gas is discharged into the airbag (not shown) from the gas outlet 10, and the airbag is inflated and deployed.
【００１５】ここで、フィルタ９の巻き終わり部２１
は、ガス排出口１０に位置しないことが望ましいが、図
１に示すように、組立や製造工程上やむを得ずガス排出
口１０に位置することもある。この場合でも、この発明
ではフィルタの巻き終わり部２１が内側に折り返されて
いることから、この部分で金網が解れたり、金網の単線
が外れて外に飛び出したりするおそれがない。Here, the winding end portion 21 of the filter 9
Is preferably not located at the gas outlet 10, but as shown in FIG. 1, it may be located at the gas outlet 10 inevitably in the assembly and manufacturing process. Even in this case, in the present invention, since the winding end portion 21 of the filter is folded back inward, there is no risk that the wire mesh will be loosened at this portion or that the single wire of the wire mesh will come off and jump out.
【００１６】例えば、エアバッグ容量６０ｌの代表的な
ガス発生器１が作動した場合、１つのガス排出口１０か
らは約１００ｌ／秒のガスが流出する。そのため、ガス
排出口１０に位置する金網は、外方へ押し出される極め
て大きな力を受ける。このとき、フィルタ９の巻終わり
部２１が内側に折り返されているため、金網の解ぐれや
飛び出しが防止される。For example, when a typical gas generator 1 having an airbag capacity of 60 l is operated, about 100 l / sec of gas flows out from one gas outlet 10. Therefore, the wire mesh located at the gas discharge port 10 receives an extremely large force pushed outward. At this time, since the winding end portion 21 of the filter 9 is folded back inward, loosening and popping out of the wire net are prevented.
【００１７】[0017]
【作用】冷却用のフィルタの巻き終わり部が内側に折り
返されていることから、このガス発生器を装着した自動
車が衝突して、ガス発生器が作動したとき、本フィルタ
を通過したガスがガス排出口からエアバッグ内に噴出さ
れる。その際、フィルタの巻き終わり部の端部がガス排
出口に位置していても、排出ガスの流出圧力により金網
の端部が解れたり、ガス排出口から単線が飛び出すこと
がない。従って、フィルタは燃焼ガスを安全、確実に濾
過し、エアバッグを損傷したり、さらには乗員を傷つけ
るおそれがなく、その結果エアバッグは確実に膨張展開
する。Since the winding end of the cooling filter is folded back inward, when a car equipped with this gas generator collides and the gas generator operates, the gas that passes through this filter becomes gas. It is ejected from the outlet into the airbag. At that time, even if the end of the winding end of the filter is located at the gas outlet, the end of the wire mesh is not loosened due to the outflow pressure of the exhaust gas, and the single wire does not protrude from the gas outlet. Therefore, the filter safely and reliably filters the combustion gas, and there is no risk of damaging the airbag and further injuring an occupant, and as a result, the airbag is reliably inflated and deployed.
【００１８】[0018]
【実施例】以下、実施例及び比較例をあげてこの発明を
具体的に説明する。 （実施例１）図１〜３に示すガス発生器１を以下の様に
して製作した。EXAMPLES The present invention will be specifically described below with reference to Examples and Comparative Examples. (Example 1) The gas generator 1 shown in FIGS. 1 to 3 was manufactured as follows.
【００１９】ガス発生器１は、冷却捕集室５の外径が１
０１mm、燃焼室４の外径が７５mm、点火室３の外径が２
５mmで、高さ４０mm、厚さ１mmのステンレス製である。
冷却捕集室５のガス排出口１０としては、直径８mmの穴
が円周上に２４箇所等間隔であけられ、燃焼室オリフィ
ス８としては、直径８mmの穴が円周上に１２箇所等間隔
であけられている。点火室３には、点火剤３ｂとしてボ
ロン硝石２ｇと電気着火式のスクイブ３ａを収容した。The gas generator 1 has a cooling collection chamber 5 having an outer diameter of 1
01mm, outer diameter of combustion chamber 4 is 75mm, outer diameter of ignition chamber 3 is 2
It is made of stainless steel with a size of 5 mm, a height of 40 mm and a thickness of 1 mm.
As the gas outlets 10 of the cooling and collecting chamber 5, holes having a diameter of 8 mm are formed at equal intervals on the circumference at 24 locations, and as the combustion chamber orifices 8, holes having a diameter of 8 mm are provided at equal intervals at the 12 locations on the circumference. It is opened at. The ignition chamber 3 accommodated 2 g of boron glass as an igniting agent 3b and an electric ignition type squib 3a.
【００２０】燃焼室４には、ガス発生剤６としてアジ化
ナトリウム（ＮａＮ3 ）５８重量％、二酸化マンガン
（ＭｎＯ2 ）３４重量％、ベントナイト（ケイ酸塩鉱
物）８重量％を混合したものを幅６mm、厚さ５mmに成形
したペレット９９．５ｇを装填した。冷却捕集室５に
は、冷却捕集用のフィルタ９として、幅３７mmで下記表
１に示す構成のものを使用した。なお、表１において、
１周目は最内周、８周目は最外周を表す。In the combustion chamber 4, a mixture of 58% by weight of sodium azide (NaN 3 ), 34% by weight of manganese dioxide (MnO 2 ) and 8% by weight of bentonite (silicate mineral) was used as the gas generating agent 6. 99.5 g of pellets molded to a width of 6 mm and a thickness of 5 mm were loaded. In the cooling / collecting chamber 5, as the cooling / collecting filter 9, a filter having a width of 37 mm and a structure shown in Table 1 below was used. In addition, in Table 1,
The first lap represents the innermost circumference and the eighth lap represents the outermost circumference.
【００２１】このフィルタ９の巻き始め部２０は３点の
スポット溶接で固定し、内周から順次巻回した。また、
巻き終わり部２１は、図５に示すように端部２２から１
０mm程度折り返したものを組立て、ガス発生器１に装填
した。ここで、巻き終わり部２１の端部２２は、図１及
び図３に示すように、ガス排出口１０に位置するように
配置した。また、フィルタ９の上下に配置されるガスケ
ット２４として、厚さ１mmのグラファイト製のガスケッ
トを用いた。The winding start portion 20 of the filter 9 was fixed by spot welding at three points, and was wound sequentially from the inner circumference. Also,
The winding end portion 21 is formed from the end portions 22 to 1 as shown in FIG.
The folded back piece of about 0 mm was assembled and loaded into the gas generator 1. Here, as shown in FIGS. 1 and 3, the end portion 22 of the winding end portion 21 is arranged so as to be located at the gas discharge port 10. Further, as the gasket 24 arranged above and below the filter 9, a graphite gasket having a thickness of 1 mm was used.
【００２２】[0022]
【表１】 [Table 1]
【００２３】このガス発生器１に、６０リットルのエア
バッグを取り付け、ガス発生器１を作動させエアバッグ
を膨張展開させる試験を、５０個のガス発生器について
実施した。A test was conducted on 50 gas generators by attaching a 60 liter airbag to the gas generator 1 and operating the gas generator 1 to inflate and deploy the airbag.
【００２４】その結果、全てのガス発生器１は、フィル
タ９の巻き終わり部２１の金網が解れたり、ガス排出口
１０から金網の単線が外に飛び出すことなく正常に作動
し、エアバッグは良好に膨張展開した。 （比較例１）図８，９に示すように、フィルタ３１の巻
き終わり部３４を折り返さずスポット溶接を３点で行っ
て固定したフィルタ３１を用いた以外、実施例１と同様
の構成のガス発生器を使用して、実施例１と同様の方法
で５０個のガス発生器について試験を行なった。As a result, all the gas generators 1 operate normally without the wire mesh of the winding end portion 21 of the filter 9 being loosened and the single wire of the wire mesh not protruding from the gas discharge port 10, and the airbag is good. Expanded and expanded. (Comparative Example 1) As shown in FIGS. 8 and 9, a gas having the same configuration as in Example 1 was used, except that the winding end portion 34 of the filter 31 was not folded back and spot welding was performed at three points and fixed. Using the generator, 50 gas generators were tested in the same manner as in Example 1.
【００２５】その結果、８個のガス発生器については、
フィルタ３１の巻き終わり部３４の端部の金網が解れ、
またその内１個についてはガス排出口１０から金網の単
線が外に飛び出し、エアバッグを傷つけ、ガスがエアバ
ッグから漏れるに至った。 （比較例２）実施例１で使用したフィルタ９において、
フィルタ９の巻き終わり部２１を外側に折り返したフィ
ルタを用い、折り返した金網の端部２２の切断部をガス
排出口１０に位置するように配置した。それ以外は、実
施例１と同様にして、５０個のガス発生器について試験
を行った。As a result, for the eight gas generators,
The wire mesh at the end of the winding end portion 34 of the filter 31 is released,
Further, with respect to one of them, a single wire of the wire mesh jumped out from the gas discharge port 10 to damage the airbag, and the gas leaked from the airbag. (Comparative Example 2) In the filter 9 used in Example 1,
A filter having the winding end portion 21 of the filter 9 folded back was used, and the cut portion of the folded wire mesh end 22 was arranged so as to be positioned at the gas discharge port 10. Other than that, it carried out similarly to Example 1, and tested 50 gas generators.
【００２６】その結果、比較例１と同じく、金網の終端
部が解れたものが６個発生し、そのうち１個はガス排出
口１０から金網の単線が飛び出した。なお、この発明は
前記実施例に限定されるものではなく、例えば以下のよ
うにこの発明の趣旨を逸脱しない範囲で任意に構成を変
更して具体化してもよい。 （ａ）フィルタ９の最外周に位置する金網の端部をガス
排出口１０に位置しないように配置すること。 （ｂ）フィルタ９を構成する金網の組合せを変えたり、
種類を変えたり、網目の粗密を変えたり、線径や材質を
変えたりすること。 （ｃ）フィルタ９の最外周に位置する平織り金網１１の
端部２２を内側へ折り返した状態で、さらにその先端を
内側へ折り返すこと。As a result, as in Comparative Example 1, 6 pieces of wire nets having loose end portions were generated, and one of them had a single wire of wire gauze protruding from the gas outlet 10. The present invention is not limited to the above-described embodiments, but may be embodied by arbitrarily changing the configuration without departing from the gist of the present invention, for example. (A) Arrange the end of the wire mesh located on the outermost periphery of the filter 9 so as not to be located at the gas outlet 10. (B) changing the combination of wire meshes that make up the filter 9,
Changing the type, changing the density of the mesh, changing the wire diameter and material. (C) With the end portion 22 of the plain weave wire mesh 11 located at the outermost periphery of the filter 9 folded back inward, the tip thereof is further folded back inward.
【００２７】[0027]
【発明の効果】以上詳述したように第１の発明のガス発
生器用フィルタは、フィルタの巻き終わり部が内側に折
り返されていることから、フィルタの巻き終わり部の端
部がガス排出口に位置した場合にも、排出ガスの流出圧
力によって金網が解れたり、金網の単線が外に飛び出し
たりするおそれがないという優れた効果を奏する。As described in detail above, in the gas generator filter according to the first aspect of the present invention, since the winding end portion of the filter is folded back inward, the end portion of the winding end portion of the filter becomes the gas discharge port. Even when it is located, there is an excellent effect that there is no risk that the wire mesh will be loosened by the outflow pressure of the exhaust gas and that the single wire of the wire mesh will not pop out.
【００２８】また、このフィルタを収容した第２の発明
のガス発生器は、前記フィルタの効果に基づいて、安全
に、しかも確実にエアバッグを膨張展開させることがで
きてガス発生器としての機能を確実に発揮できるという
優れた効果が得られる。In addition, the gas generator of the second invention, which accommodates this filter, can inflate and deploy the airbag safely and reliably based on the effect of the filter, and functions as a gas generator. It is possible to obtain an excellent effect of reliably exhibiting the above.
【図１】この発明のガス発生器の一実施例を示す平断面
図（図２のＡ−Ａ線断面図）である。FIG. 1 is a plan sectional view (a sectional view taken along the line AA in FIG. 2) showing an embodiment of a gas generator of the present invention.
【図２】ガス発生器の縦断面図である。FIG. 2 is a vertical cross-sectional view of a gas generator.
【図３】ガス発生器の正面図である。FIG. 3 is a front view of a gas generator.
【図４】巻回状態にある冷却用のフィルタを示す平面図
である。FIG. 4 is a plan view showing a cooling filter in a wound state.
【図５】冷却用のフィルタの端部を示す部分拡大断面図
である。FIG. 5 is a partially enlarged cross-sectional view showing an end portion of a cooling filter.
【図６】図５のＢ矢視図である。FIG. 6 is a view on arrow B of FIG.
【図７】冷却用のフィルタを巻回した状態を示す部分拡
大断面図である。FIG. 7 is a partial enlarged cross-sectional view showing a state in which a cooling filter is wound.
【図８】従来の冷却用のフィルタを巻回した状態を示す
部分拡大断面図である。FIG. 8 is a partially enlarged cross-sectional view showing a state in which a conventional cooling filter is wound.
【図９】図８のＣ矢視図である。9 is a view taken in the direction of arrow C in FIG.
【符号の説明】 １…ガス発生器、３…点火室、３ａ…点火手段としての
スクイブ、３ｂ…点火手段としての点火剤、４…燃焼
室、５…冷却捕集室、６…ガス発生剤、９…フィルタ、
１０…ガス排出口、２１…巻き終わり部。[Explanation of Codes] 1 ... Gas Generator, 3 ... Ignition Chamber, 3a ... Squib as Ignition Means, 3b ... Ignition Agent as Ignition Means, 4 ... Combustion Chamber, 5 ... Cooling Collection Chamber, 6 ... Gas Generation Agent , 9 ... filter,
10 ... Gas discharge port, 21 ... Winding end part.
Claims (2)
る点火室と、その外周に位置し、ガス発生剤を内包する
燃焼室と、さらにその外周に位置し、金網等からなる冷
却捕集用のフィルタが内周側から外周側へと巻回されて
収容された冷却捕集室と、冷却捕集室の周壁に設けられ
たガス排出口とを備え、前記燃焼室で発生したガスを冷
却捕集室に導入し、ガス排出口を介して噴出するガス発
生器において、 前記フィルタの巻き終わり部を内側に折り返したことを
特徴とするガス発生器用フィルタ。1. An ignition chamber which is located at the center of the container and which has an ignition means, a combustion chamber which is located on the outer periphery of the combustion chamber and which contains a gas generating agent, and a cooling chamber which is located on the outer periphery of the combustion chamber and comprises a wire mesh or the like. A cooling collection chamber in which a collecting filter is housed by being wound from the inner circumference side to the outer circumference side, and a gas discharge port provided in the circumferential wall of the cooling collection room, and the gas generated in the combustion chamber In a gas generator for introducing into the cooling and collecting chamber and ejecting the gas through a gas discharge port, a winding end portion of the filter is folded back inward.
る点火室と、その外周に位置し、ガス発生剤を内包する
燃焼室と、さらにその外周に位置し、金網等からなる冷
却捕集用のフィルタが内周側から外周側へと巻回されて
収容された冷却捕集室と、冷却捕集室の周壁に設けられ
たガス排出口とを備え、前記フィルタの巻き終わり部を
内側に折り返したことを特徴とするガス発生器。2. An ignition chamber which is located at the center of the container and which has an ignition means, a combustion chamber which is located on the outer periphery of the combustion chamber and which contains a gas generating agent, and a cooling chamber which is located on the outer periphery of the combustion chamber and is composed of a wire mesh or the like. A collecting filter has a cooling and collecting chamber that is wound from the inner peripheral side to the outer peripheral side and accommodated therein, and a gas discharge port provided on a peripheral wall of the cooling and collecting chamber, and a winding end portion of the filter is provided. Gas generator characterized by folding back inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4322093A JPH06170129A (en) | 1992-12-01 | 1992-12-01 | Filter for gas generator and gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4322093A JPH06170129A (en) | 1992-12-01 | 1992-12-01 | Filter for gas generator and gas generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06170129A true JPH06170129A (en) | 1994-06-21 |
Family
ID=18139841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4322093A Pending JPH06170129A (en) | 1992-12-01 | 1992-12-01 | Filter for gas generator and gas generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06170129A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001315611A (en) * | 2000-02-28 | 2001-11-13 | Daicel Chem Ind Ltd | Coolant/filter of gas generator for air bag |
| JP2010504218A (en) * | 2006-09-21 | 2010-02-12 | エイシーエス インダストリーズ，インコーポレイテッド | Flat expanded metal with variable pitch, method for producing the same, filter produced using expanded metal, and method for producing the filter |
| JP2013035385A (en) * | 2011-08-08 | 2013-02-21 | Fuji Filter Kogyo Kk | Filter for airbag inflator and method for manufacturing the same |
| US9700825B2 (en) | 2006-09-21 | 2017-07-11 | Acs Industries, Inc. | Expanded metal filters |
| US10717032B2 (en) | 2006-09-21 | 2020-07-21 | Acs Industries, Inc. | Expanded metal filters |
-
1992
- 1992-12-01 JP JP4322093A patent/JPH06170129A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001315611A (en) * | 2000-02-28 | 2001-11-13 | Daicel Chem Ind Ltd | Coolant/filter of gas generator for air bag |
| JP2010504218A (en) * | 2006-09-21 | 2010-02-12 | エイシーエス インダストリーズ，インコーポレイテッド | Flat expanded metal with variable pitch, method for producing the same, filter produced using expanded metal, and method for producing the filter |
| JP4759087B2 (en) * | 2006-09-21 | 2011-08-31 | エイシーエス インダストリーズ，インコーポレイテッド | Flat expanded metal with variable pitch, method for producing the same, filter produced using expanded metal, and method for producing the filter |
| JP2015164727A (en) * | 2006-09-21 | 2015-09-17 | エイシーエス インダストリーズ，インコーポレイテッド | Flat expanded metal with variable pitch, methods for making the same, filters made using expanded metal, and methods for making filters |
| US9700825B2 (en) | 2006-09-21 | 2017-07-11 | Acs Industries, Inc. | Expanded metal filters |
| US10717032B2 (en) | 2006-09-21 | 2020-07-21 | Acs Industries, Inc. | Expanded metal filters |
| JP2013035385A (en) * | 2011-08-08 | 2013-02-21 | Fuji Filter Kogyo Kk | Filter for airbag inflator and method for manufacturing the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100570536B1 (en) | An airbag inflator for an airbag | |
| JP3467271B2 (en) | Double wall airbag | |
| EP0592254B1 (en) | Gas generator for vehicle occupant restraint system | |
| US5829785A (en) | Internal structure for a two-walled inflator | |
| US6926304B2 (en) | Airbag generator, deflector member, coolant/filter means support member, coolant, and housing | |
| US5849054A (en) | Filter for an inflator | |
| JPH0655990A (en) | Gas generating agent of gas generator for expanding air bag | |
| JPH04266549A (en) | Apparatus for expanding restraint device for passenger in vehicle | |
| JPH06170129A (en) | Filter for gas generator and gas generator | |
| WO1993021037A1 (en) | Air bag with inflatable ribs | |
| JP2000198409A (en) | Gas generator for air bag and coolant therefor | |
| JP3976155B2 (en) | Inflator for airbag | |
| JP2938755B2 (en) | Filter for inflator | |
| EP1127753A1 (en) | Air bag gas generator and coolant therefor | |
| JP3229840B2 (en) | Gas generator for airbag and airbag device | |
| JP2865153B2 (en) | Gas generator for airbag deployment | |
| JPH1029493A (en) | Gas generator for air bag and airbag device | |
| JP2004203373A (en) | Gas generator for air bag | |
| JP4814832B2 (en) | Gas generator filter material and gas generator | |
| JPH07267041A (en) | Air bag unfolding gas generator | |
| KR100523976B1 (en) | An Airbag Inflator and an Airbag Apparatus | |
| JPH03157241A (en) | Air bag device | |
| JP2665516B2 (en) | Final filter of gas generator for airbag deployment | |
| JPH0761317A (en) | Gas generator for unfolding air bag | |
| JPH06298035A (en) | Airbag unfolding gas generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 12 Free format text: PAYMENT UNTIL: 20111022 |
|
| LAPS | Cancellation because of no payment of annual fees |