JPH04118336A - Gas generator - Google Patents
Gas generatorInfo
- Publication number
- JPH04118336A JPH04118336A JP2238211A JP23821190A JPH04118336A JP H04118336 A JPH04118336 A JP H04118336A JP 2238211 A JP2238211 A JP 2238211A JP 23821190 A JP23821190 A JP 23821190A JP H04118336 A JPH04118336 A JP H04118336A
- Authority
- JP
- Japan
- Prior art keywords
- combustion chamber
- filter
- gas
- combustor
- combustion
- 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
- 238000002485 combustion reaction Methods 0.000 claims abstract description 127
- 238000002844 melting Methods 0.000 claims abstract description 5
- 230000008018 melting Effects 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 40
- 229910052751 metal Inorganic materials 0.000 claims description 36
- 239000002184 metal Substances 0.000 claims description 36
- 239000000463 material Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 238000005057 refrigeration Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 78
- 239000003795 chemical substances by application Substances 0.000 description 40
- 239000010935 stainless steel Substances 0.000 description 16
- 229910001220 stainless steel Inorganic materials 0.000 description 16
- 238000004891 communication Methods 0.000 description 11
- 239000003365 glass fiber Substances 0.000 description 11
- 238000001914 filtration Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- 239000004744 fabric Substances 0.000 description 5
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 229910001111 Fine metal Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical group 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 229910001948 sodium oxide Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Inorganic materials [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Air Bags (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ガス発生器に関し、特に自動車の乗員保護用
エアバッグのガス発生器に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gas generator, and more particularly to a gas generator for an airbag for protecting an automobile occupant.
従来のガス発生器としては、第7図に示すように、ガス
発生器30の燃焼室31内に燃焼室フィルタ32として
、燃焼室31の壁側に粗い複数の金属メツシュスクリー
ン33を密着させて設置し、ガラス繊維クロス34をそ
の内側に設け、さらに、目の細かい金属メツシュスクリ
ーン35を前記ガラス繊維クロス34の内側、すなわち
、ガス発生剤に接する側に設けることによって、ガス発
生剤36の燃焼生成物である酸化ナトリウム及び粒状燃
焼残渣等を捕集するガス発生器30か知られている(特
開昭55−110642号公報)。As shown in FIG. 7, in a conventional gas generator, a plurality of coarse metal mesh screens 33 are tightly attached to the wall side of the combustion chamber 31 as a combustion chamber filter 32 in the combustion chamber 31 of the gas generator 30. The gas generating agent 36 is installed by installing a glass fiber cloth 34 on the inside thereof, and further providing a fine metal mesh screen 35 on the inside of the glass fiber cloth 34, that is, on the side in contact with the gas generating agent. A gas generator 30 is known that collects combustion products such as sodium oxide and particulate combustion residue (Japanese Patent Laid-Open No. 110642/1983).
ところが、前記従来のガス発生器3oは、ガラス繊維ク
ロス34を使用しているために粒状固体残渣の捕集効果
は高いものの、クロスを構成するガラス繊維が、ガス発
生剤36の燃焼温度で溶融し始め、粘着性となるために
、粘着性のガラス繊維とガス発生剤の燃焼生成物とが一
体となり目詰まりを起こしてしまったり、燃焼室4の壁
面に近接した金属メツシュスクリーン33に前記粘着性
のガラス繊維か付着してしまい、目詰まりを起こしてし
まうことかあった。そのため、燃焼室31の内圧か著し
く上昇し、燃焼室31と冷却捕集室37とか変形し、冷
却用フィルタ39を通らすにカスが未濾過のまま排出さ
れる現象いわゆるショトパス現象か一部で起こるという
問題点があった。However, although the conventional gas generator 3o uses the glass fiber cloth 34 and therefore has a high effect of collecting granular solid residue, the glass fibers constituting the cloth melt at the combustion temperature of the gas generating agent 36. As the adhesive glass fibers and the combustion products of the gas generating agent come together and cause clogging, the metal mesh screen 33 near the wall of the combustion chamber 4 may become sticky. Sometimes sticky glass fibers would stick to them, causing them to become clogged. As a result, the internal pressure of the combustion chamber 31 increases significantly, the combustion chamber 31 and the cooling collection chamber 37 are deformed, and the scum is discharged unfiltered even though it passes through the cooling filter 39. This is partly due to the so-called short-pass phenomenon. There was a problem with it happening.
また、金属メツシュスクリーン33.35は、燃焼室3
1の連通孔38側には目か粗い金属メツシュスクリーン
33か、ガス発生剤に接する側には目を細かくした金属
メツシュスクリーン35が配置されているため、燃焼生
成物の中でも粒子の小さいものまでガス発生剤36側の
金属メツシュスクリーン35によって一度に濾過されて
しまうため、目詰まりを起こし易いという問題点があっ
た。Further, the metal mesh screen 33.35 is attached to the combustion chamber 3.
A coarse metal mesh screen 33 is placed on the side of the communication hole 38 of No. 1, and a fine metal mesh screen 35 is placed on the side in contact with the gas generating agent. Since even the metal mesh screen 35 on the side of the gas generating agent 36 is filtered at once, there is a problem that clogging is likely to occur.
本発明の目的は、ガス発生剤が燃焼した際に、その燃焼
生成物によって目詰まりを起こすことなくそれを効果的
に捕集し、カスを適度に冷却する燃焼室フィルタを用い
たガス発生器を提供することにある。An object of the present invention is to provide a gas generator using a combustion chamber filter that effectively collects combustion products without causing clogging when a gas generating agent is combusted, and appropriately cools the residue. Our goal is to provide the following.
本発明者らは、上記課題を解決するために鋭意検討した
結果、本発明に到達した。The present inventors have arrived at the present invention as a result of intensive studies to solve the above problems.
すなわち、本発明は、点火手段を備えた点火室と、ガス
発生剤及び燃焼室フィルタを備えた燃焼室と、冷却用フ
ィルタを備えた冷却捕集室とからなるガス発生器におい
て、前記燃焼室フィルタは、ガス発生剤の燃焼生成物と
化学反応せず、融点かカス発生剤の燃焼温度以上の8〜
100メツンユの金属スクリーンであり、かつ、該燃焼
室フィルタの全重量がガス発生剤全重量の20〜80重
量%であることを特徴とするガス発生器をその要旨とす
る。That is, the present invention provides a gas generator comprising an ignition chamber equipped with an ignition means, a combustion chamber equipped with a gas generating agent and a combustion chamber filter, and a cooling collection chamber equipped with a cooling filter. The filter does not chemically react with the combustion products of the gas generating agent, and has a melting point of 8 to 80% above the combustion temperature of the gas generating agent.
The gist of the present invention is a gas generator characterized in that it has a metal screen of 100 meters and the total weight of the combustion chamber filter is 20 to 80% by weight of the total weight of the gas generating agent.
以下、本発明のガス発生器について、第1〜6図に基づ
いて説明する。Hereinafter, the gas generator of the present invention will be explained based on FIGS. 1 to 6.
第1図は、本発明のガス発生器の一例を示す縦断面図で
ある。第1図において、カス発生器のハウジング19の
中央部には点火室1か配置されている。前記点火室1の
内底部にはスクーrブ2aが立設固定され、同スクイブ
2aにはり一ト線2bか接続されるとともに、スクイブ
2a上部周辺には点火剤3が充填被覆されており、全体
として点火手段を形成している。FIG. 1 is a longitudinal sectional view showing an example of a gas generator of the present invention. In FIG. 1, an ignition chamber 1 is arranged in the center of a housing 19 of the scum generator. A squib 2a is erected and fixed at the inner bottom of the ignition chamber 1, a beam wire 2b is connected to the squib 2a, and an ignition agent 3 is filled and coated around the upper part of the squib 2a, Together they form the ignition means.
この点火室lの外周部には環状の燃焼室4が同心円状に
配置されており、前記点火室1と燃焼室4の間の隔壁に
は点火室連通孔5が透設され点火室1と燃焼室4とを連
通している。また、この燃焼室4内部にはガス発生剤6
が収納されると共に、後述する燃焼室フィルタ7が配設
されている。An annular combustion chamber 4 is arranged concentrically on the outer periphery of the ignition chamber 1, and an ignition chamber communication hole 5 is provided in the partition wall between the ignition chamber 1 and the combustion chamber 4. It communicates with the combustion chamber 4. Additionally, a gas generating agent 6 is provided inside this combustion chamber 4.
is housed therein, and a combustion chamber filter 7, which will be described later, is also provided.
さらに、燃焼室4の外周部には環状の冷却捕集室8が点
火室lに対して同心円状に形成されており、前記燃焼室
4と冷却捕集室8との間の隔壁には燃焼室連通孔9が透
設され燃焼室4と冷却捕集室8とを連通しており、また
、前記冷却捕集室8の外壁にはガス排出孔10か透設さ
れ、冷却捕集室8とガス発生器外部とを連通している。Furthermore, an annular cooling collection chamber 8 is formed on the outer periphery of the combustion chamber 4 concentrically with respect to the ignition chamber l, and a partition wall between the combustion chamber 4 and the cooling collection chamber 8 is provided with a combustion chamber 8. A chamber communication hole 9 is provided through the combustion chamber 4 and the cooling collection chamber 8 to communicate with each other, and a gas discharge hole 10 is also provided through the outer wall of the cooling collection chamber 8 to communicate the combustion chamber 4 with the cooling collection chamber 8. and communicates with the outside of the gas generator.
この冷却捕集室8内部には冷却用フィルタ11が前記ガ
ス排出孔10を覆うようにして配設されている。A cooling filter 11 is disposed inside the cooling collection chamber 8 so as to cover the gas discharge hole 10 .
第2図及び第4〜6図は、それぞれ本発明のガス発生器
に用いる燃焼室フィルタフの例を示す断面図である。ま
た、第3図は、本発明のカス発生器に用いる燃焼室フィ
ルタフの一例を示す斜視図である。FIG. 2 and FIGS. 4 to 6 are sectional views showing examples of combustion chamber filters used in the gas generator of the present invention, respectively. Moreover, FIG. 3 is a perspective view showing an example of a combustion chamber filter used in the scum generator of the present invention.
燃焼室フィルタフの材質としては、ガス発生剤6の燃焼
生成物と化学反応せず、かつ、融点がカス発生剤6の燃
焼温度以上の金属であればどのような材質のものでもよ
く、ステンレス、鉄、ニッケル、アルミニウム等の金属
又はそれらの合金の中から選ばれ、その中でもステンレ
スがもっとも好ましい。一方、それに対し、ガス発生剤
6の燃焼温度(1000〜1400°C)で溶融し始め
、粘着性となってしまうようなガラス繊維等の非金属物
質は使用されない。また、金属物質であっても融点かガ
ス発生剤6の燃焼温度以下の金属である鉛等も使用され
ない。さらに、前記ガス発生剤6は、アジ化ナトリウム
と酸化剤とから構成されているのが一般的であるが、こ
の燃焼生成物である酸化ナトリウムに対して化学反応性
を有するケイ酸アルミニウム等の化合物も燃焼室フィル
タ7の材質としては不適当である。The combustion chamber filter may be made of any metal as long as it does not chemically react with the combustion products of the gas generating agent 6 and has a melting point higher than the combustion temperature of the scum generating agent 6, such as stainless steel, It is selected from metals such as iron, nickel, aluminum, and alloys thereof, and stainless steel is the most preferred among them. On the other hand, nonmetallic substances such as glass fibers, which begin to melt at the combustion temperature of the gas generating agent 6 (1000 to 1400°C) and become sticky, are not used. Furthermore, metals such as lead whose melting point is lower than the combustion temperature of the gas generating agent 6 are not used even if they are metallic substances. Furthermore, the gas generating agent 6 is generally composed of sodium azide and an oxidizing agent, but the gas generating agent 6 is also made of aluminum silicate or the like, which has chemical reactivity with sodium oxide, which is a combustion product. Compounds are also inappropriate as materials for the combustion chamber filter 7.
前記燃焼室フィルタ7の金属メツシュスクリーンは、そ
の粒度が8〜100メツシュの金属メツシュスクリーン
の中から選はれる。燃焼室フィルタ7が第2図に示すよ
うに一種類のメツシュから構成される場合、18〜30
メツシュの金属メツシュスクリーン12を用いるのが好
ましい。一方、前記金属メツシュスクリーン12と同等
の冷却・濾過効果を有する第4図に示すような18〜5
0メツシュ相当のニットワイヤのプレス成型品13を用
いてもよい。The metal mesh screen of the combustion chamber filter 7 is selected from metal mesh screens having a particle size of 8 to 100 mesh. When the combustion chamber filter 7 is composed of one type of mesh as shown in FIG.
Preferably, a mesh metal mesh screen 12 is used. On the other hand, the metal mesh screen 18 to 5 shown in FIG.
A press-molded product 13 of knit wire with a mesh size of 0 may be used.
また、燃焼室フィルタ7が二種のメツシュ、つまり、第
5図に示すようにガス発生剤6側(同図右側)が粗く、
燃焼室4壁側(同図左側)が細かいメツシュから構成さ
れる二層構造の場合、ガス発生剤6側には8〜10メツ
シュの金属メツシュスクリーン14を1〜2枚、燃焼室
4壁側には18〜30メツシュの金属メツシュスクリー
ン15を適量使用するのが好ましい。さらに、燃焼室フ
ィルタ7が三種のメツシュ、つまり、第6図に示すよう
にガス発生剤6側(同図右側)か粗く、燃焼室4壁側(
同図左側)か細かいメッシュから構成される三層構造の
場合、カス発生剤6側には8〜10メツシュの金属メッ
ンユスクリーン14、次に12〜18メツシュの中程度
の粗さの金属メツシュスクリーン16、燃焼室4壁側に
は2・1〜100メツシュの金属メツシュスクリーン1
7を適量使用するのか好ましい。In addition, the combustion chamber filter 7 has two types of mesh, that is, as shown in FIG. 5, the gas generating agent 6 side (the right side of the figure) is rough;
If the combustion chamber 4 wall side (left side in the figure) has a two-layer structure composed of fine mesh, one or two metal mesh screens 14 of 8 to 10 meshes are installed on the gas generating agent 6 side, and the combustion chamber 4 wall side is made of a fine mesh. It is preferable to use an appropriate amount of metal mesh screen 15 of 18 to 30 mesh on the side. Furthermore, the combustion chamber filter 7 has three types of mesh, that is, as shown in FIG.
In the case of a three-layer structure consisting of a fine mesh (on the left side of the figure), a metal mesh screen 14 of 8 to 10 meshes is placed on the scum generator 6 side, and then a metal mesh screen 14 of medium coarseness of 12 to 18 meshes is placed on the scum generator 6 side. Metal mesh screen 16 with 2.1 to 100 mesh on the combustion chamber 4 wall side
It is preferable to use an appropriate amount of 7.
ここで、金属メツシュスクリーンが8メツシュ未満の場
合は、濾過性能か不十分であり、また、100メツシュ
を超える場合は目詰まりを起こしやすいため共に好まし
くない。Here, if the metal mesh screen has less than 8 meshes, the filtration performance is insufficient, and if it exceeds 100 meshes, clogging is likely to occur, which is not preferable.
また、本発明において燃焼室フィルタ7は、ニットワイ
ヤのプレス成型品と金属メツシュスクリーンとの組み合
わせや、三層構造以上の金属メツシュスクリーン等の構
成も適宜採用され得る。Further, in the present invention, the combustion chamber filter 7 may be constructed by combining a knit wire press-molded product with a metal mesh screen, or a metal mesh screen having a three-layer structure or more, as appropriate.
次に、燃焼室フィルタフの重量は、その材質によっても
異なるが、ガス発生剤6の全重量の20〜80重量%の
範囲内であり、好ましくは40〜60重量%の範囲であ
る。重量が20重量%未満の場合、フィルタ量が少なく
十分な冷却・濾過効果が得られに(い。また、80重量
%を超える場合、総じて冷却・濾過効果は十分であるが
、必要以上に冷却されるため、ガス発生器から排出され
る総ガス量が少なくなり、結果的にエアバッグの膨張が
不十分なものとなる。Next, although the weight of the combustion chamber filter varies depending on its material, it is in the range of 20 to 80% by weight, preferably in the range of 40 to 60% by weight, of the total weight of the gas generating agent 6. If the weight is less than 20% by weight, the amount of filter is small and sufficient cooling and filtration effects cannot be obtained. If it exceeds 80% by weight, the cooling and filtration effects are generally sufficient, but the As a result, the total amount of gas discharged from the gas generator is reduced, resulting in insufficient inflation of the airbag.
燃焼室4内では冷却捕集室8内に比べ、ガスの流速が遅
いため、燃焼室フィルタ7は冷却用フィルタ11に比べ
て冷却効果がより発揮される。Since the flow rate of gas is slower in the combustion chamber 4 than in the cooling collection chamber 8, the combustion chamber filter 7 exhibits a greater cooling effect than the cooling filter 11.
また、上記の理由から同じ冷却・濾過効果を得る場合、
燃焼室フィルタフの使用量を増やすと冷却用フィルタ1
1の使用量を減らすという関係になる。例えばガス発生
剤6を90gとした場合、燃焼室フィルタ7が30g(
ガス発生剤6の約33%)に対し冷却用フィルタ11の
使用量は110g程度となり、燃焼室フィルタ7が60
g(ガス発生剤6の約67%)に対し冷却用フィルタ1
1の使用量は80g程度となる。Also, if you want to obtain the same cooling and filtration effect for the above reasons,
If you increase the amount of combustion chamber filter used, cooling filter 1
The relationship is to reduce the usage of 1. For example, if the gas generating agent 6 is 90g, the combustion chamber filter 7 is 30g (
The amount of the cooling filter 11 used is about 110g (approximately 33% of the gas generating agent 6), and the amount of the combustion chamber filter 7 is 60g.
(approximately 67% of the gas generating agent 6)
The usage amount of 1 is about 80g.
燃焼室フィルタ7は、断面が長方形又はそれに近い形状
が好適に採用され、断面形状が長方形の場合、フィルタ
全体として見ると第3図に示すような形状となる。The combustion chamber filter 7 preferably has a rectangular cross section or a shape close to it. When the cross section is rectangular, the filter as a whole has a shape as shown in FIG. 3.
また、燃焼室フィルタ7の高さは、燃焼室4の高さに等
しくてもよいが、好ましくは燃焼室連通孔9の直径に対
して1.5〜4倍の高さであり、高さが1.5倍未満の
場合、発生したガスがフィルタの高さ不足から冷却・濾
過されずに燃焼室4から冷却捕集室8へと通過してしま
うおそれかある。また、高さが4倍を超える場合、同じ
厚みのフィルタを作製しても重量がその分重くなってし
まうばかりかコスト高となってしまうおそれがある。The height of the combustion chamber filter 7 may be equal to the height of the combustion chamber 4, but is preferably 1.5 to 4 times the diameter of the combustion chamber communication hole 9; If is less than 1.5 times, there is a risk that the generated gas will pass from the combustion chamber 4 to the cooling collection chamber 8 without being cooled or filtered due to the insufficient height of the filter. Furthermore, if the height exceeds four times, even if a filter with the same thickness is produced, it will not only be heavier but also more expensive.
なお、前記燃焼室フィルタ7は燃焼室連通孔9を覆うよ
うにして、かつ、燃焼室連通孔9の位置が燃焼室フィル
タ7の高さのほぼ中間点となるように燃焼室4に配置さ
れる。The combustion chamber filter 7 is arranged in the combustion chamber 4 so as to cover the combustion chamber communication hole 9, and so that the position of the combustion chamber communication hole 9 is approximately at the midpoint of the height of the combustion chamber filter 7. Ru.
上記のようにして構成された本発明のガス発生器では、
例えばガス発生装置を装着した自動車が衝突すると、衝
突検出装置によりガス発生装置の電源が投入されて点火
剤か発火し、その火炎か燃焼室内のカス発生剤へ伝播さ
れてガス発生剤が燃焼を開始し、この燃焼に伴い燃焼室
の内圧が上昇する。燃焼室で発生した高温の燃焼ガス及
び燃焼生成物は燃焼室フィルタを通過する際、該燃焼室
フィルタを目詰まりさせることなく、かつ、適度に冷却
されて燃焼室連通孔を通過して冷却捕集室に流入する。In the gas generator of the present invention configured as described above,
For example, when a car equipped with a gas generator collides, the collision detection device turns on the power to the gas generator, ignites the ignition agent, and the flame propagates to the scum generator in the combustion chamber, causing the gas generator to burn. As combustion begins, the internal pressure of the combustion chamber increases. When the high-temperature combustion gas and combustion products generated in the combustion chamber pass through the combustion chamber filter, they are cooled appropriately without clogging the combustion chamber filter, and then pass through the combustion chamber communication hole to be cooled and captured. Flow into the collection room.
そして冷却用フィルタを通過する際、燃焼ガスはさらに
冷却され、かっ、未捕集の燃焼生成物が捕集される。こ
のように効率的、かつ効果的に燃焼生成物が捕集される
と共に、冷却されたガスはガス排出口からエアバッグ内
に排出されてエアバックを確実に膨張展開させる。When passing through the cooling filter, the combustion gas is further cooled and uncollected combustion products are collected. In this way, the combustion products are efficiently and effectively collected, and the cooled gas is discharged from the gas outlet into the airbag to ensure that the airbag is inflated and deployed.
以下、実施例及び比較例をあげて本発明を具体的に説明
する。The present invention will be specifically explained below with reference to Examples and Comparative Examples.
実施例1
冷却捕集室8か外径100mm、燃焼室4が外径75m
m、点火室lか外径25mmで、高さ40mm。Example 1 Cooling collection chamber 8 has an outer diameter of 100 mm, combustion chamber 4 has an outer diameter of 75 m
m, ignition chamber l or outer diameter 25mm, height 40mm.
厚さ1 mmのステンレス製のハウジンクを持つ第1図
に示すようなガス発生器を用い、点火室1には点火剤3
としてホロン硝石2gを被覆充填すると共に、電気着火
式のスクイ72a及びリート線2bを装着した。A gas generator as shown in Fig. 1 having a stainless steel housing with a thickness of 1 mm was used, and an ignition agent 3 was placed in the ignition chamber 1.
As a coating, 2 g of horon saltpeter was filled, and an electrically ignited scoop 72a and a riet wire 2b were attached.
また、冷却捕集室8には冷却用フィルタ11として高さ
37mm、線径0.30mm、24メツシュの手織のス
テンレス製金属スクリーンを5周に巻き、その外側に線
径40μmのステンレス繊維を500g/m使用し、厚
さ0.8mmにした高さ37mmのステンレス繊維焼結
フィルタを1周巻き、その外側に線径2.8μmのセラ
ミック繊維を375g/m使用し、厚さ2.5mmにし
た高さ37mmのセラミック繊維フィルタを1周巻き、
その外側に線径0.18X0.14mm、40X200
メツシュの畳縁のステンレス製金属スクリーンを1周巻
き、その外側に線型0.35mm、18メツシュの手織
のステンレス製金属スクリーンを2周巻いたものを配設
した。In addition, in the cooling collection chamber 8, a hand-woven stainless steel metal screen with a height of 37 mm, a wire diameter of 0.30 mm, and 24 meshes is wound five times as a cooling filter 11, and 500 g of stainless steel fibers with a wire diameter of 40 μm are wrapped around the outside of the screen. A stainless steel fiber sintered filter with a height of 37 mm and a thickness of 0.8 mm was wound around once, and 375 g/m of ceramic fiber with a wire diameter of 2.8 μm was used on the outside of the filter, and the thickness was 2.5 mm. Wrap a ceramic fiber filter with a height of 37 mm once,
On the outside, the wire diameter is 0.18X0.14mm, 40X200
A mesh stainless steel metal screen with a tatami edge was wrapped once, and a linear 0.35 mm, 18 mesh hand-woven stainless steel metal screen was wound twice around the outside.
また、冷却用フィルタ11の上下には、ガス漏れを防止
するために厚さ1 mmのクラファイト製のパツキン1
8を設置した。Additionally, on the top and bottom of the cooling filter 11, there are packings 1 made of graphite with a thickness of 1 mm to prevent gas leakage.
8 was installed.
燃焼室4には、ガス発生剤6としてアジ化ナトリウム6
0重量%、二酸化マンガン30重量%、ベントナイト(
ケイ酸塩鉱物)10重量%を混合し、直径6mm、厚さ
4111mの複数のペレット状に成形したもの90gを
収納すると共に、燃焼室フィルタ7として、燃焼室4壁
側に高さ20mm、線径0、 30mm、 18メツ
シュの平織のステンレス製金属スクリーンを8周巻き、
全部で60g(ガス発生剤6の重量の約67%)とした
ものを配設した。The combustion chamber 4 contains sodium azide 6 as a gas generating agent 6.
0% by weight, manganese dioxide 30% by weight, bentonite (
It contains 90 g of a mixture of 10 wt. A plain weave stainless steel metal screen with a diameter of 0.30 mm and 18 mesh is wound around 8 times.
A total of 60 g (about 67% of the weight of the gas generating agent 6) was provided.
また、冷却捕集室8の外壁にはガス排出口lOとして、
直径8mmの孔を24箇所に等間隔で設け、燃焼室4の
外壁には、燃焼室連通孔9として直径8mmの孔を12
箇所に等間隔で設け、さらに点火室1の外壁には、点火
室連通孔5として直径2゜5mmの孔を10箇所に等間
隔で設け、第1図に示すようなガス発生器を作製した。In addition, on the outer wall of the cooling collection chamber 8, there is a gas outlet lO.
24 holes with a diameter of 8 mm are provided at equal intervals, and 12 holes with a diameter of 8 mm are provided as combustion chamber communication holes 9 on the outer wall of the combustion chamber 4.
A gas generator as shown in Fig. 1 was created by providing 10 holes with a diameter of 2.5 mm at equal intervals as ignition chamber communication holes 5 on the outer wall of the ignition chamber 1. .
このガス発生器に容量601のタンク試験器を取付け、
燃焼室4の圧力とタンク試験器の内圧及びタンク内に排
出された燃焼生成物の−っである金属ナトリウム量をそ
れぞれ測定した結果、燃焼室4の最大圧力は81kgf
/cnf、タンク内圧は最大2,2kgf/cれナトリ
ウム排出量14mgと、エアパック用ガス発生器として
きわめて良好な数値を示した。なお、タンク内圧の許容
値は通常1.6〜3.0kg/cmである。Attach a tank tester with a capacity of 601 to this gas generator,
As a result of measuring the pressure in the combustion chamber 4, the internal pressure of the tank tester, and the amount of metallic sodium in the combustion products discharged into the tank, the maximum pressure in the combustion chamber 4 was 81 kgf.
/cnf, the maximum tank internal pressure was 2.2 kgf/c, and the sodium output was 14 mg, which are extremely good values for an air pack gas generator. Note that the allowable value of the tank internal pressure is usually 1.6 to 3.0 kg/cm.
実施例2
実施例1において、燃焼室フィルタ7として最外周に高
さ20mm、線径0.30mm、24メツシュの手織の
ステンレス製金属スクリーンを5周巻き、次にその内側
に、高さ20mm、線径0.35mmX 12メツシュ
の手織のステンレス製金属スクリーンを2周巻き、その
内側のガス発生剤6と接する部分には高さ20mm、線
径0.8mm、8メツシュの手織のステンレス製金属ス
クリーンを1周巻き、全部で50g(ガス発生剤6の重
量の約56%)としたものを使用した以外は実施例1と
同様のカス発生器を用い、実施例1と同様の試験を行な
った。Example 2 In Example 1, a hand-woven stainless steel metal screen with a height of 20 mm, a wire diameter of 0.30 mm, and 24 meshes was wrapped around the outermost circumference five times as the combustion chamber filter 7, and then a 20 mm height, A hand-woven stainless steel metal screen with a wire diameter of 0.35 mm and 12 meshes is wound twice, and a hand-woven stainless steel metal screen with a height of 20 mm and a wire diameter of 0.8 mm and 8 meshes is placed on the inside of the screen in contact with the gas generating agent 6. The same test as in Example 1 was conducted using the same scum generator as in Example 1, except that the same scum generator as in Example 1 was used, with a total of 50 g (approximately 56% of the weight of gas generating agent 6) being wound around once. .
その結果、燃焼室4の最大圧力は65kgf/cur、
タンク内圧は最大2. 1 k g f 、/crTr
、排出ナトリウム量17mgと、実施例1と同様にきわ
めて良好な数値を示した。As a result, the maximum pressure in the combustion chamber 4 is 65 kgf/cur,
Tank internal pressure is maximum 2. 1 k g f ,/crTr
Similarly to Example 1, the excreted sodium amount was 17 mg, which was an extremely good value.
比較例1
燃焼室フィルタ7として、最外周に高さ38mm、線径
0.35mm、18メツシュの手織のステンレス製金属
スクリーンを1周巻き、その内側に線径9mmのガラス
繊維を330g使用し、厚さ3mmにした高さ37mm
のガラス繊維フィルタを1周巻き、その内側でガス発生
剤6と接する側には高さ37mm、線径0゜2mm、4
0メツシュの手織のステンレス製金属スクリーンを2周
巻いて作製した以外は実施例1と同じガス発生器を使用
し、実施例1と同様の試験を行なった。Comparative Example 1 As the combustion chamber filter 7, a hand-woven stainless steel metal screen with a height of 38 mm, a wire diameter of 0.35 mm, and 18 meshes was wound around the outermost circumference once, and 330 g of glass fiber with a wire diameter of 9 mm was used inside the screen. Height 37mm with thickness 3mm
A glass fiber filter of 37 mm in height and 0°2 mm in wire diameter is placed on the inside of the filter on the side in contact with the gas generating agent 6.
The same test as in Example 1 was conducted using the same gas generator as in Example 1 except that a hand-woven stainless steel metal screen with 0 mesh was wound twice.
その結果、燃焼室4の内圧は最大160kgf/ cr
lと燃焼室フィルタ7が目詰まりをおこして内圧が著し
く上昇し、また、燃焼室フィルタ7の量か少ないため、
冷却・濾過が十分でなくタンク内圧は最大3.3kgf
/cmfと高くなった。また、・燃焼室4内圧か著しく
上昇したため、燃焼室4と冷却捕集室8とか変形し、シ
ョートパスと呼ばれる、冷却用フィルタ11を通らずに
カス及び燃焼生成物か未濾過のまま出る現象か一部で起
こり、ナトリウム排出量が330mgと多かった。As a result, the internal pressure of the combustion chamber 4 reaches a maximum of 160 kgf/cr.
l and the combustion chamber filter 7 become clogged and the internal pressure rises significantly, and also because the amount of combustion chamber filter 7 is small,
Due to insufficient cooling and filtration, the tank internal pressure reached a maximum of 3.3 kgf.
/cmf. Additionally, as the internal pressure of the combustion chamber 4 has increased significantly, the combustion chamber 4 and the cooling collection chamber 8 are deformed, resulting in a phenomenon called short pass, in which scum and combustion products exit unfiltered without passing through the cooling filter 11. This occurred in some cases, and the amount of sodium excreted was as high as 330 mg.
比較例2
実施例1において、燃焼室フィルタ7を、線径が1 m
mで、5メツシュの手織のステンレス製金属スクリーン
を5周巻いて60gとした以外は実施例1と同じガス発
生器を使用し、実施例1と同様の試験を行なった。Comparative Example 2 In Example 1, the combustion chamber filter 7 had a wire diameter of 1 m.
The same test as in Example 1 was conducted using the same gas generator as in Example 1, except that a 5-mesh hand-woven stainless steel metal screen was wound five times to give a weight of 60 g.
その結果、燃焼室4の最大圧力は90kgf/crlと
実施例1より多少高くなる程度であったか、燃焼室4で
の冷却・濾過が不十分であるため冷却捕集室8て目詰ま
りをおこし、タンク内圧は最大4.5kgf/ci、ナ
トリウム排出量420mgと非常に高くなった。As a result, the maximum pressure in the combustion chamber 4 was 90 kgf/crl, which was slightly higher than in Example 1, or the cooling and filtration in the combustion chamber 4 was insufficient, causing clogging in the cooling collection chamber 8. The tank internal pressure was extremely high with a maximum of 4.5 kgf/ci and sodium discharge of 420 mg.
比較例3
実施例1において、燃焼室フィルタ7を、線径が0.2
mmで、150メツシュの手織のステンレス製金属スク
リーンを複数巻いて60gとした以外は実施例1と同じ
ガス発生器を使用し、実施例1と同様の試験を行なった
。Comparative Example 3 In Example 1, the combustion chamber filter 7 had a wire diameter of 0.2
The same test as in Example 1 was conducted using the same gas generator as in Example 1, except that a plurality of hand-woven stainless steel metal screens of 150 mm were wound to weigh 60 g.
その結果、燃焼室4の最大圧力は180kgf/ cm
に達し、比較例1と同様に燃焼室4と冷却捕集室8とか
変形し、ショートパスが起こった。As a result, the maximum pressure in the combustion chamber 4 is 180 kgf/cm
As in Comparative Example 1, the combustion chamber 4 and the cooling collection chamber 8 were deformed, resulting in a short pass.
比較例4
実施例1において、燃焼室フィルタ7を10g(ガス発
生剤6の重量の約11%)とした以外は実施例1と同様
のガス発生器を用いて同様の試験を行なった。Comparative Example 4 A similar test was conducted using the same gas generator as in Example 1 except that the combustion chamber filter 7 was 10 g (approximately 11% of the weight of the gas generating agent 6).
その結果、燃焼室4の最大圧力は98kgf/ciと実
施例1より多少高くなる程度であったか、燃焼室4での
冷却濾過が不十分であるため冷却捕集室8で目詰まりを
起こし、タンク内圧は最大4゜2kgf/crf、ナト
リウム排出量180mgと高(なった。As a result, the maximum pressure in the combustion chamber 4 was 98 kgf/ci, which was slightly higher than in Example 1, or the cooling and filtration in the combustion chamber 4 was insufficient, causing clogging in the cooling collection chamber 8, and the tank The internal pressure was as high as 4.2 kgf/crf and the sodium output was 180 mg.
比較例5
実施例1において、燃焼室フィルタ7を80g(ガス発
生剤6の重量の約89・%)とした以外は実施例1と同
様のガス発生器を用いて同様の試験を行なった。Comparative Example 5 A similar test was conducted using the same gas generator as in Example 1, except that the combustion chamber filter 7 was 80 g (approximately 89% of the weight of the gas generating agent 6).
その結果、燃焼室4の最大圧力は92kgf/cr&と
実施例1より多少高くなる程度であったか、必要以上に
冷却されたためタンク内圧は1.2kgf/cイ、と低
くなった。As a result, the maximum pressure in the combustion chamber 4 was 92 kgf/cr&, which was only slightly higher than in Example 1, and the tank internal pressure was as low as 1.2 kgf/cr& because it was cooled more than necessary.
このように、本実施例のカス発生器においては、燃焼室
フィルタ7としてガス発生剤6が燃焼する高温、高圧環
境下で粘着性となるガラス繊維クロス34を使用せず、
発生したガスと化学反応しない金属メツシュスクリーン
を使用し、しかもその粒度を8〜100メツシュとし、
重量をガス発生剤6の全重量の20〜80重量%として
いるため、粘着性ガラス繊維が金属メツシュスクリーン
に付着して燃焼室の圧力が著しく上昇することがなく、
十分な冷却・濾過効果が得られる。In this way, in the scum generator of this embodiment, the glass fiber cloth 34, which becomes sticky under the high temperature and high pressure environment where the gas generating agent 6 burns, is not used as the combustion chamber filter 7.
A metal mesh screen that does not chemically react with the generated gas is used, and the particle size is 8 to 100 mesh.
Since the weight is 20 to 80% by weight of the total weight of the gas generating agent 6, the pressure in the combustion chamber does not increase significantly due to adhesive glass fibers adhering to the metal mesh screen.
Sufficient cooling and filtration effects can be obtained.
また、燃焼室フィルタ7の高さを燃焼室連通孔9の孔径
の1. 5〜4倍の高さの範囲に設定し、かつ、燃焼室
連通孔9の位置が燃焼室フィルタフのほぼ中間点になる
よう設置しているため、カス流が燃焼室フィルタ7を効
率的に通過し、冷却及び燃焼生成物補集とが効果的に行
われる。Also, the height of the combustion chamber filter 7 is set to 1.0 mm of the hole diameter of the combustion chamber communication hole 9. Since the height is set in the range of 5 to 4 times, and the position of the combustion chamber communication hole 9 is located approximately at the midpoint of the combustion chamber filter, the waste flow efficiently filters the combustion chamber filter 7. cooling and combustion product collection are effectively carried out.
また、実施例2においては、金属メツシュスクリーンの
配置をガス発生剤6側の目を粗くし、燃焼室4壁側の目
をそれに比べて細かくしているため、燃焼生成物の粗い
ものから順に、燃焼室フィルタフの外側に行くに従い、
細かいものが捕集され、燃焼室フィルタ7の目詰まりが
起こりにくいため、燃焼室4の圧力が著しく上昇するよ
うなことはなく効率的な濾過ができる。さらにはハウジ
ング19の肉厚を薄く設計することができ、軽量化、低
価格化を図ることができる。In addition, in Example 2, the metal mesh screen is arranged so that the mesh on the gas generating agent 6 side is coarse, and the mesh on the combustion chamber 4 wall side is finer than that, so that coarse combustion products are In order, as you go to the outside of the combustion chamber filter,
Since fine particles are collected and the combustion chamber filter 7 is less likely to be clogged, the pressure in the combustion chamber 4 does not increase significantly and efficient filtration can be performed. Furthermore, the wall thickness of the housing 19 can be designed to be thin, and weight and cost reductions can be achieved.
本発明のガス発生器は、ガス発生剤が燃焼した際に、そ
の燃焼生成物又はフィルタ自身によって目詰まりを起こ
すことなく、しかも燃焼室の圧力を著しく上昇させるこ
となく燃焼生成物を効果的、かつ、効率的に捕集するこ
とができると同時にガスを適度に冷却することができる
という効果を奏する。The gas generator of the present invention effectively removes the combustion products when the gas generating agent is combusted, without causing clogging by the combustion products or the filter itself, and without significantly increasing the pressure in the combustion chamber. Moreover, it is possible to efficiently collect the gas and at the same time, it is possible to cool the gas appropriately.
第1図は本発明の一例を示すガス発生器の縦断面図、第
2図、第4図、第5図及び第6図は本発明のガス発生器
に用いる燃焼室フィルタの実施例を示す縦断面図、第3
図は本発明のガス発生器に用いる燃焼室フィルタの一実
施例を示す斜視図、第7図は従来のカス発生器を示す断
面図である。
1・・・点火室、2a・・・点火手段としてのスクイブ
、2b・・・点火手段としてのリード線、3・・・点火
手段としての点火剤、4・・・燃焼室、6・・・ガス発
生剤、7・・・燃焼室フィルタ、計・・冷却捕集室、1
1・・・冷却用フィルタ。FIG. 1 is a longitudinal sectional view of a gas generator showing an example of the present invention, and FIGS. 2, 4, 5, and 6 show examples of combustion chamber filters used in the gas generator of the present invention. Longitudinal sectional view, 3rd
The figure is a perspective view showing one embodiment of the combustion chamber filter used in the gas generator of the present invention, and FIG. 7 is a sectional view showing a conventional scum generator. DESCRIPTION OF SYMBOLS 1... Ignition chamber, 2a... Squib as ignition means, 2b... Lead wire as ignition means, 3... Ignition agent as ignition means, 4... Combustion chamber, 6... Gas generating agent, 7... Combustion chamber filter, Meter... Cooling collection chamber, 1
1... Cooling filter.
Claims (1)
と、ガス発生剤(6)及び燃焼室フィルタ(7)を備え
た燃焼室(4)と、冷却用フィルタ(11)を備えた冷
却捕集室(8)とからなるガス発生器において、 前記燃焼室フィルタ(7)は、ガス発生剤(6)の燃焼
生成物と化学反応せず、融点がガス発生剤(6)の燃焼
温度以上の8〜100メッシュの金属スクリーンであり
、かつ、該燃焼室フィルタ(7)の全重量がガス発生剤
(6)全重量の20〜80重量%であることを特徴とす
るガス発生器。[Claims] 1. Ignition chamber (1) equipped with ignition means (2a, 2b, 3)
and a combustion chamber (4) equipped with a gas generating agent (6) and a combustion chamber filter (7), and a cooling collection chamber (8) equipped with a cooling filter (11), The combustion chamber filter (7) is a metal screen of 8 to 100 mesh that does not chemically react with the combustion products of the gas generating agent (6) and has a melting point higher than the combustion temperature of the gas generating agent (6). A gas generator characterized in that the total weight of the combustion chamber filter (7) is 20 to 80% by weight of the total weight of the gas generating agent (6).
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2238211A JPH04118336A (en) | 1990-09-06 | 1990-09-06 | Gas generator |
EP91308075A EP0476886B1 (en) | 1990-09-06 | 1991-09-04 | Gas generating device |
DE69105179T DE69105179T2 (en) | 1990-09-06 | 1991-09-04 | Gas generator device. |
US07/755,827 US5215721A (en) | 1990-09-06 | 1991-09-06 | Gas generating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2238211A JPH04118336A (en) | 1990-09-06 | 1990-09-06 | Gas generator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04118336A true JPH04118336A (en) | 1992-04-20 |
Family
ID=17026803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2238211A Pending JPH04118336A (en) | 1990-09-06 | 1990-09-06 | Gas generator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04118336A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006076558A (en) * | 2004-08-10 | 2006-03-23 | Daicel Chem Ind Ltd | Gas generator for airbag |
WO2020148962A1 (en) * | 2019-01-17 | 2020-07-23 | 株式会社ダイセル | Gas generator and filter for gas generator |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5090032A (en) * | 1973-12-15 | 1975-07-18 | ||
JPH01293112A (en) * | 1988-05-17 | 1989-11-27 | Ngk Insulators Ltd | Filter for gas generator and its production |
JPH01297336A (en) * | 1988-03-09 | 1989-11-30 | Morton Thiokol Inc | Automobile constraint bag expansion device |
-
1990
- 1990-09-06 JP JP2238211A patent/JPH04118336A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5090032A (en) * | 1973-12-15 | 1975-07-18 | ||
JPH01297336A (en) * | 1988-03-09 | 1989-11-30 | Morton Thiokol Inc | Automobile constraint bag expansion device |
JPH01293112A (en) * | 1988-05-17 | 1989-11-27 | Ngk Insulators Ltd | Filter for gas generator and its production |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006076558A (en) * | 2004-08-10 | 2006-03-23 | Daicel Chem Ind Ltd | Gas generator for airbag |
WO2020148962A1 (en) * | 2019-01-17 | 2020-07-23 | 株式会社ダイセル | Gas generator and filter for gas generator |
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