JP2965583B2 - Gas generator - Google Patents
Gas generatorInfo
- Publication number
- JP2965583B2 JP2965583B2 JP1229071A JP22907189A JP2965583B2 JP 2965583 B2 JP2965583 B2 JP 2965583B2 JP 1229071 A JP1229071 A JP 1229071A JP 22907189 A JP22907189 A JP 22907189A JP 2965583 B2 JP2965583 B2 JP 2965583B2
- Authority
- JP
- Japan
- Prior art keywords
- container
- gas
- generating agent
- annular
- gas generating
- 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.)
- Expired - Lifetime
Links
- 239000007789 gas Substances 0.000 claims description 55
- 239000003795 chemical substances by application Substances 0.000 claims description 31
- 239000002826 coolant Substances 0.000 claims description 9
- 239000000567 combustion gas Substances 0.000 claims description 5
- 239000008188 pellet Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は自動車の衝突事故等による衝撃からドライバ
ー及び乗客を保護するためのエアーバッグに使用される
ガス発生器に係り、特に機械着火式ガス発生器の新規な
構造に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas generator used for an air bag for protecting a driver and a passenger from an impact caused by an automobile collision or the like, and particularly to a mechanically ignitable gas. It relates to a new structure of the generator.
周知の様に、ガス発生器は車両のエアバッグシステム
に使用される重要な部品であり、瞬時にガス発生剤を燃
焼させ窒素ガスを膨張可能な袋体に供給するものであ
る。As is well known, gas generators are an important component used in vehicle airbag systems, which instantaneously burn a gas generant and supply nitrogen gas to an inflatable bladder.
ガス発生器としては電気着火式のものと機械着火式の
ものとがあるが、電気着火式ガス発生器が電流の発熱に
よって点火器（スクイブ）に着火するものであるのに対
し、機械着火式ガス発生器は純機械式センサによって作
動するものであり、その利点としては、電気配線等が不
要であり、低コストであることがあげられる。There are two types of gas generators: the electric ignition type and the mechanical ignition type. The electric ignition type gas generator ignites the igniter (squib) by the heat generated by the electric current, whereas the mechanical ignition type The gas generator is operated by a pure mechanical sensor, and its advantages are that no electric wiring or the like is required and the cost is low.
かかる機械着火式ガス発生器を有するエアバッグシス
テムは特開昭60−248454号公報により提案されて公知で
ある。特開昭60−248454には、ガス発生材料を収容する
ガス発生器と、ガス発生材料を点火するための点火装置
と、ガス発生器のハウジング内部に据えつけられ、衝突
事故を検知して点火装置を作動させる機械的センサから
なるエアバッグシステムが開示されている。An airbag system having such a mechanical ignition type gas generator is proposed and known in Japanese Patent Application Laid-Open No. 60-248454. Japanese Patent Application Laid-Open No. 60-248454 discloses a gas generator accommodating a gas generating material, an ignition device for igniting the gas generating material, and a gas generator which is installed inside a housing of the gas generator and detects a collision accident to ignite. An airbag system comprising a mechanical sensor for activating the device is disclosed.
又従来ガス発生器としてガス発生剤、伝火薬、冷却
材、フィルタ等を上部及び下部の二つの半殻体からなる
ハウジング内の環状の空間に収容したものは公知であ
り、上記二個の半殻体は相互に螺合して組み合わせられ
ている（特公昭53−22729号公報参照）。Conventionally, a gas generator in which a gas generating agent, a transfer agent, a coolant, a filter, and the like are housed in an annular space in a housing composed of two upper and lower half shells is known. The shells are screwed together and combined (see JP-B-53-22729).
従来、ガス発生剤としてはアジ化ナトリウム（NaN3）
を含むペレットが代表的なものであるが、かかるペレッ
トはアルミニウム製の密閉した破裂可能な容器内に収容
され、その蓋は容器本体に対しかしめられ且つシールさ
れている。この様なガス発生剤容器は外殻容器内の環状
空間に配置されるが、容器の振動による破損防止のた
め、最小振幅になる様に外殻容器内の空間部の内全高を
厳しく管理する必要があった。この様な外殻容器内全高
の管理は非常に面倒且つ不経済であるため、その解決が
要望されていた。Conventionally, sodium azide (NaN 3 ) has been used as a gas generating agent.
Is typical, but such pellets are housed in a sealed, rupturable container made of aluminum, the lid of which is swaged and sealed against the container body. Such a gas generating agent container is arranged in an annular space in the outer container, but in order to prevent damage due to vibration of the container, the inner height of the space in the outer container is strictly controlled so as to have a minimum amplitude. Needed. Since the management of the total height inside the outer shell container is very troublesome and uneconomical, a solution has been demanded.
本発明者等は種々検討の結果、ペレット状のガス発生
剤を収容する容器（以下キャニスタとよぶ）の振動防止
のため、キャニスタの蓋の上部に弾性部材（クッショ
ン）を設置すれば、キャニスタの振動によるシール部の
破損或いはガス発生剤ペレットの破損を防ぎ、又ハウジ
ング外殻容器の内全高の寸法精度も厳しく要求されない
ことを見出し、本発明に到ったものである。As a result of various studies, the present inventors have found that if an elastic member (cushion) is installed on the top of a canister lid to prevent vibration of a container (hereinafter referred to as a canister) containing a pellet-shaped gas generating agent, The present invention has been found to prevent breakage of the seal portion or breakage of the gas generating agent pellet due to vibration, and has found that the dimensional accuracy of the inner height of the housing outer shell container is not strictly required.
即ち本発明は、上記外殻容器（ディフューザ）と下部
外殻容器（クロージャ）とからなり、これらの二つの容
器は内部にガス発生剤、伝火薬、冷却材及びフィルタを
夫々収容する環状空間を形成する様嵌合されるハウジン
グを有するガス発生器において、ガス発生剤は上記環状
空間に適合する形状の破裂可能な容器内に収容され、該
容器の外側には容器の側面を破って出るガス発生剤の燃
焼ガス流れを制御する環状の圧力隔壁が設けられ、該容
器の環状蓋は容器本体の内外の円筒状態のかしめにより
固定されて且つシールされており、ガス発生剤容器の該
環状蓋とディフューザの対向面間に容器の振動を防ぎ、
もって該環状蓋の内外のかしめ固定部の破損を防止する
環状弾性部材を配置してなることを特徴とするガス発生
器に係るものである。That is, the present invention comprises the above outer shell container (diffuser) and the lower outer shell container (closure), and these two containers form an annular space in which a gas generating agent, a transfer agent, a coolant, and a filter are respectively stored. In a gas generator having a housing that is mated to form, the gas generating agent is contained in a rupturable container shaped to conform to the annular space, and outside the container, gas exiting the side of the container. An annular pressure partition for controlling the flow of combustion gas of the generating agent is provided, and the annular lid of the container is fixed and sealed by caulking in a cylindrical state inside and outside of the container body, and the annular lid of the gas generating agent container is provided. To prevent vibration of the container between the facing surfaces of the diffuser and
Further, the present invention relates to a gas generator, wherein an annular elastic member for preventing damage to a caulking fixing portion inside and outside of the annular lid is arranged.
本発明の構造によれば、弾性部材（クッション）を配
置するだけで、ディフューザ及びクロージャの内全高を
らくに管理することが可能であり、又ガス発生剤ペレッ
トの破損の心配もない。According to the structure of the present invention, it is possible to easily manage the entire height of the diffuser and the closure simply by disposing the elastic member (cushion), and there is no fear of breakage of the gas generating agent pellet.
以下本発明を図面に示した好適実施態様について説明
するが、本発明がこれにより限定されるものでないこと
は言うまでもない。Hereinafter, the present invention will be described with reference to preferred embodiments shown in the drawings, but it is needless to say that the present invention is not limited thereto.
第１図はガス発生器ハウジングの縦断面図であるが、
ハウジングは上部外殻容器（ディフューザ）１及び下部
外殻容器（クロージャ）２からなる二つの半殻体から構
成され、これら二つの半殻体1,2は内部にガス発生剤室
８、伝火薬室９、冷却材室10及びフィルタ室11からなる
環状の空間を形成している。又クロージャ２はその下面
に機械着火式センサ12を収容する空間20を有し、その頂
壁に一対の雷管部３を設けてある。ディフューザ１は中
央開孔部を有し、クロージャ２はこの開孔部に嵌合する
中央円筒状部を有する。而してこの中央円筒状部には頂
面に雌ねじ部23が穿孔され、これに対し補強ネジ（アダ
プタ）５の雄ねじ部24が螺合される。FIG. 1 is a longitudinal sectional view of the gas generator housing,
The housing is composed of two half-shells composed of an upper shell container (diffuser) 1 and a lower shell container (closure) 2, and these two half-shells 1 and 2 have therein a gas generating agent chamber 8, a transfer agent, and the like. An annular space including the chamber 9, the coolant chamber 10, and the filter chamber 11 is formed. The closure 2 has a space 20 for accommodating the mechanical ignition type sensor 12 on the lower surface thereof, and a pair of primer parts 3 is provided on the top wall thereof. The diffuser 1 has a central opening, and the closure 2 has a central cylindrical portion that fits into the opening. In this central cylindrical portion, a female screw portion 23 is bored on the top surface, and a male screw portion 24 of the reinforcing screw (adapter) 5 is screwed thereto.
ガス発生剤室８にはガス発生剤容器13が設置されてい
る。第２図に容器13の部分拡大図を示すが、この容器は
アルミニウム製で、その内にはペレット状のガス発生剤
21が充填されている。ガス発生剤容器13には蓋26があ
り、これは容器本体の内、外径のかしめにより固定され
ている。かしめ部は防湿のため樹脂28により接着されて
シールされている。A gas generating agent container 13 is provided in the gas generating agent chamber 8. FIG. 2 shows a partially enlarged view of the container 13, which is made of aluminum and contains a gas generating agent in the form of pellets.
21 are filled. The gas generating agent container 13 has a lid 26, which is fixed by caulking the inside diameter of the container body. The caulked portion is sealed with a resin 28 for moisture prevention.
本発明においては、蓋26の上にはステンレス鋼線製の
弾性部材14が設置されている。これはガス発生剤容器13
の振動防止のために設けられたもので、ディフューザ１
の内面で支持されている。ステンレス鋼線はバネ線を心
金に巻いてプレス成形したもので、弾性部材14はある適
当な厚みと幅の環状体としてつくられ、ディフューザ１
の内面に第２図に示す如く弾性的に接触している。尚、
振動によるペレットの破損−破損により粉末状になると
燃焼面積、燃焼速度が変わり、圧力性能に影響する−を
防止するため、容器13内の上部にも弾性部材25が置かれ
ている。ガス発生剤容器の外側には環状の圧力隔壁（コ
ンバッションリング）30があり、これはガス発生剤21の
燃焼ガス流れの方向を制御する機能を持っている。In the present invention, the elastic member 14 made of stainless steel wire is provided on the lid 26. This is the gas generating agent container 13
The diffuser 1 is provided to prevent vibration of the
It is supported on the inside. The stainless steel wire is formed by pressing a spring wire around a mandrel, and the elastic member 14 is formed as an annular body having an appropriate thickness and width.
As shown in FIG. still,
An elastic member 25 is also provided in the upper portion of the container 13 in order to prevent the pellet from being damaged due to the vibration. Outside the gas generant container, there is an annular pressure partition (combustion ring) 30, which has a function of controlling the direction of the flow of the combustion gas of the gas generant 21.
次に簡単に第１図に示したガス発生器の作動を説明す
ると、内蔵された機械着火式センサ12の着火ピンが雷管
３に突き刺さると発火し、通路31を通してそのエネルギ
が伝火薬室９に達し、伝火薬を着火させる。通路32を通
ってきた伝火薬の火炎はガス発生剤容器13の内壁を打ち
破り、一気にガス発生剤21を発火させる。この時発生す
るガスはある圧力でガス発生剤容器13の側面を破る。側
面から出た燃焼ガスは第１図に矢印で示した様に圧力隔
壁30の開口部を通過して冷却材室10に入る。燃焼ガスは
ガス発生剤の燃焼残渣も含んでおり、この共有体は冷却
材室10内の冷却材と衝突し、これによりガスは冷却さ
れ、残渣を冷却材に付着する。Next, the operation of the gas generator shown in FIG. 1 will be described briefly. Reach and ignite the transfer charge. The flame of the transfer charge that has passed through the passage 32 breaks the inner wall of the gas generating agent container 13 and ignites the gas generating agent 21 at a stretch. The gas generated at this time breaks the side surface of the gas generating agent container 13 at a certain pressure. The combustion gas exiting from the side surface passes through the opening of the pressure partition 30 and enters the coolant chamber 10 as indicated by the arrow in FIG. The combustion gas also contains the combustion residues of the gas generant, and this common body collides with the coolant in the coolant chamber 10, whereby the gas is cooled and the residue adheres to the coolant.
冷却材を通過したガス（燃焼残渣は殆ど捕集されてい
る）はディフューザ１の吐出口33に向かうが、吐出口の
内径側のフィルタ室11内のフィルタに来たガスは半径方
向に通過してミストを捕集された窒素ガスは吐出口33を
通りバッグ内に放出される。The gas that has passed through the coolant (combustion residue is mostly collected) goes to the discharge port 33 of the diffuser 1, but the gas that has come to the filter in the filter chamber 11 on the inner diameter side of the discharge port passes in the radial direction. The nitrogen gas trapped by the mist is discharged through the discharge port 33 into the bag.
第１図は本発明のガス発生器の縦断面図、第２図はガス
発生剤容器の上部付近の要部断面図、第３図はガス発生
剤容器の斜視図、第４図は弾性部材の斜視図である。 １……ディフューザ ２……クロージャ ３……雷管 ５……アダプタ 13……ガス発生剤容器 14……弾性部材 21……ガス発生剤FIG. 1 is a longitudinal sectional view of a gas generator of the present invention, FIG. 2 is a sectional view of a main part near an upper portion of a gas generating agent container, FIG. 3 is a perspective view of the gas generating agent container, and FIG. It is a perspective view of. DESCRIPTION OF SYMBOLS 1 ... Diffuser 2 ... Closure 3 ... Detonator 5 ... Adapter 13 ... Gas generating agent container 14 ... Elastic member 21 ... Gas generating agent
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭55−110642（ＪＰ，Ａ) 特開 昭50−146039（ＪＰ，Ａ) 実開 昭50−137739（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) B60R 21/26 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-55-110642 (JP, A) JP-A-50-146039 (JP, A) Jpn. Field (Int.Cl. 6 , DB name) B60R 21/26
Claims (1)
容器（クロージャ）とからなり、これらの二つの容器は
内部にガス発生剤、伝火薬、冷却材及びフィルタを夫々
収容する環状空間を形成する様嵌合されるハウジングを
有するガス発生器において、ガス発生剤は上記環状空間
に適合する形状の破裂可能な容器内に収容され、該容器
の外側には容器の側面を破って出るガス発生剤の燃焼ガ
ス流れの方向を制御する環状の圧力隔壁が設けられ、該
容器の環状蓋は容器本体の内外の円筒状壁のかしめによ
り固定されて且つシールされており、ガス発生剤容器の
該環状蓋とディフューザの対向面間に容器の振動を防
ぎ、もって該環状蓋の内外のかしめ固定部の破損を防止
する環状弾性部材を配置してなることを特徴とするガス
発生器。1. An upper shell container (diffuser) and a lower shell container (closure). These two containers each have an annular space for accommodating a gas generating agent, a transfer agent, a coolant, and a filter. In a gas generator having a housing that is mated to form, the gas generating agent is contained in a rupturable container shaped to conform to the annular space, and outside the container, gas exiting the side of the container. An annular pressure bulkhead for controlling the direction of combustion gas flow of the generating agent is provided, and the annular lid of the container is fixed and sealed by caulking of cylindrical walls inside and outside of the container body, and is provided with a gas generating agent container. A gas generator comprising an annular elastic member disposed between the opposed surfaces of the annular lid and the diffuser to prevent vibration of the container and thereby prevent damage to a caulking fixing portion inside and outside the annular lid.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1229071A JP2965583B2 (en) | 1989-09-04 | 1989-09-04 | Gas generator |
| US07/576,593 US5189255A (en) | 1989-09-04 | 1990-08-31 | Gas generator |
| DE69014499T DE69014499T2 (en) | 1989-09-04 | 1990-09-03 | Gas generator. |
| EP90309599A EP0416835B1 (en) | 1989-09-04 | 1990-09-03 | Gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1229071A JP2965583B2 (en) | 1989-09-04 | 1989-09-04 | Gas generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0392447A JPH0392447A (en) | 1991-04-17 |
| JP2965583B2 true JP2965583B2 (en) | 1999-10-18 |
Family
ID=16886284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1229071A Expired - Lifetime JP2965583B2 (en) | 1989-09-04 | 1989-09-04 | Gas generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2965583B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0733758U (en) * | 1993-12-03 | 1995-06-23 | センサー・テクノロジー株式会社 | Gas generator for airbag |
| US5806887A (en) * | 1994-05-12 | 1998-09-15 | Sensor Technology Co., Ltd. | Gas generator with gas generant cushioning member and method of making thereof |
| JP4804216B2 (en) * | 2006-04-26 | 2011-11-02 | 日本化薬株式会社 | Gas generator |
| JP4432932B2 (en) * | 2006-05-09 | 2010-03-17 | トヨタ自動車株式会社 | Vehicle knee airbag device and vehicle knee airbag deployment method |
-
1989
- 1989-09-04 JP JP1229071A patent/JP2965583B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0392447A (en) | 1991-04-17 |
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