JPH0733758U - Gas generator for airbag - Google Patents

Gas generator for airbag

Info

Publication number
JPH0733758U
JPH0733758U JP071205U JP7120593U JPH0733758U JP H0733758 U JPH0733758 U JP H0733758U JP 071205 U JP071205 U JP 071205U JP 7120593 U JP7120593 U JP 7120593U JP H0733758 U JPH0733758 U JP H0733758U
Authority
JP
Japan
Prior art keywords
gas
gas generating
sealed container
housing
generating agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP071205U
Other languages
Japanese (ja)
Inventor
耕治 田中
裕二 伊藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Kayaku Co Ltd
Original Assignee
Nippon Kayaku Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Kayaku Co Ltd filed Critical Nippon Kayaku Co Ltd
Priority to JP071205U priority Critical patent/JPH0733758U/en
Publication of JPH0733758U publication Critical patent/JPH0733758U/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】 【目的】 密封容器やガス発生剤の耐振性に優れたガス
発生器を提供する。 【構成】 円筒容器状のハウジング2、3内に、隔壁4
で区画されたガス発生室6とフィルタ室7、8、10と
を備え、前記ガス発生室6で発生したガスを隔壁4及び
ハウジング16に設けたガス孔4a、4b、4c、16
aでフィルタ室7、8、10を経て外部へ放出するよう
構成し、前記ガス発生室6にガス発生剤9を密封容器1
3に収納して配置するとともに、該密封容器13内に前
記ガス発生剤9の振動を抑制するクッション材22を配
置してなるガス発生器1において、前記密封容器13を
ハウジング2、3及び/又は隔壁4に接着剤又は両面接
着シートで固着したものである。
(57) [Summary] [Purpose] To provide a gas generator with excellent vibration resistance of a sealed container and a gas generating agent. [Structure] Partition walls 4 are provided in cylindrical container-shaped housings 2 and 3.
The gas generating chamber 6 and the filter chambers 7, 8 and 10 partitioned by the gas generating chamber 6 and the gas holes 4 a, 4 b, 4 c and 16 provided in the partition wall 4 and the housing 16 for generating the gas generated in the gas generating chamber 6.
a, the gas generating agent 6 is discharged to the outside through the filter chambers 7, 8 and 10, and the gas generating agent 9 is sealed in the gas generating chamber 6.
In the gas generator 1 in which the cushioning material 22 for suppressing the vibration of the gas generating agent 9 is arranged in the sealed container 13, the sealed container 13 is housed in the housings 2, 3 and / or. Alternatively, it is fixed to the partition wall 4 with an adhesive or a double-sided adhesive sheet.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、自動車の乗員を保護するエアバッグ装置に使用されるガス発生器に 係り、特にガス発生剤とその密封容器の耐振性を改善したものに関する。 The present invention relates to a gas generator used in an airbag device for protecting an occupant of a vehicle, and more particularly to a gas generator having improved vibration resistance of a gas generating agent and a hermetically sealed container thereof.

【0002】[0002]

【従来の技術】[Prior art]

この種の従来のガス発生器は、円筒容器状のハウジング内に、隔壁で区画され たガス発生室及びフィルタ室を設けるとともに、隔壁及びハウジングにガス孔を 設け、ガス発生室で発生したガスをフィルタ室で冷却・濾過してエアバッグへ供 給するよう構成したものである。そして、ガス発生剤は、吸湿等を防止するため 、金属箔からなる密封容器に収納してガス発生室に配置され、さらに、この密封 容器内のガス発生剤との空間及び密封容器とハウジングとの間には、接着性の無 いクッション材が配置される。これは、外部振動により、密封容器とハウジング との相対移動に基づく異音や、ガス発生剤の粉化等が発生するのを防止するため である。 In this type of conventional gas generator, a gas generating chamber and a filter chamber that are partitioned by a partition are provided in a cylindrical container-shaped housing, and gas holes are provided in the partition and the housing so that the gas generated in the gas generating chamber can be stored. It is configured so that it is cooled and filtered in the filter chamber and supplied to the airbag. In order to prevent moisture absorption and the like, the gas generating agent is housed in a sealed container made of metal foil and placed in the gas generating chamber. Furthermore, the space between the gas generating agent and the gas generating agent in the sealed container and the housing and the housing are Between them, a non-adhesive cushioning material is placed. This is to prevent the generation of abnormal noise due to the relative movement between the hermetically sealed container and the housing and the pulverization of the gas generating agent due to external vibration.

【0003】[0003]

【考案が解決しようとする課題】[Problems to be solved by the device]

ところで、上述のガス発生器のハウジングは、容器状であるため通常上下2つ の部品に分かれており、この2つの部品を摩擦圧接等で接合して組み立てられる が、この摩擦圧接等では、接合により寸法が変化する。このため、密封容器とハ ウジングとの間に配置されたクッション材の圧縮代が安定せず、例えば圧縮が不 足する場合はガタを生じ、逆に圧縮し過ぎた場合はクッション性が不足し、密封 容器とハウジングとの相対移動に基づく異音や、密封容器の摩耗による密封性の 劣化、ガス発生剤の粉化等が発生して耐振性に劣るという問題点を有していた。 By the way, the housing of the above-mentioned gas generator is usually container-shaped, and therefore it is divided into upper and lower parts. The two parts are assembled by friction welding or the like. Causes the dimensions to change. For this reason, the compression allowance of the cushioning material placed between the sealed container and the housing is not stable.For example, if the compression is insufficient, there is rattling, and if it is over-compressed, the cushioning property is insufficient. However, there is a problem that vibration resistance is poor due to abnormal noise caused by relative movement between the hermetically sealed container and the housing, deterioration of hermeticity due to abrasion of the hermetically sealed container, and pulverization of the gas generating agent.

【0004】 本考案は、従来の技術の有するこのような問題点に鑑みてなされたものであり 、その目的とするところは、密封容器やガス発生剤の耐振性に優れたガス発生器 を提供することにある。The present invention has been made in view of the above problems of the conventional technology, and an object of the present invention is to provide a gas generator excellent in vibration resistance of a sealed container and a gas generating agent. To do.

【0005】[0005]

【課題を解決するための手段】[Means for Solving the Problems]

上記課題を解決するために本考案のガス発生器は、円筒容器状のハウジング内 に、隔壁で区画されたガス発生室とフィルタ室とを備え、前記ガス発生室で発生 したガスを隔壁及びハウジングに設けたガス孔でフィルタ室を経て外部へ放出す るよう構成し、前記ガス発生室にガス発生剤を密封容器に収納して配置するとと もに、前記密封容器をハウジング及び/又は隔壁に接着剤又は両面シートで固着 してなるものである。 In order to solve the above problems, a gas generator of the present invention comprises a cylindrical container-shaped housing, a gas generating chamber and a filter chamber which are partitioned by a partition, and the gas generated in the gas generating chamber is partitioned and the housing. The gas holes provided in the gas discharge chamber are configured to be discharged to the outside through the filter chamber, the gas generating agent is housed in a hermetically sealed container, and the hermetically sealed container is provided as a housing and / or a partition wall. It is fixed with an adhesive or a double-sided sheet.

【0006】[0006]

【作用】[Action]

密封容器自体をガス発生器の本体(ハウジング又は隔壁)に接着剤又は両面シ ートで固着するので、密封容器と本体とが一体化され、その相対移動による異音 発生が防止される。密封容器内に配置されたクッション材によりガス発生剤の移 動が抑制されるために、ガス発生剤の粉化等が防止される。 Since the sealed container itself is fixed to the main body (housing or partition) of the gas generator with an adhesive or a double-sided sheet, the sealed container and the main body are integrated, and abnormal noise due to their relative movement is prevented. Since the movement of the gas generating agent is suppressed by the cushion material arranged in the hermetically sealed container, pulverization of the gas generating agent is prevented.

【0007】[0007]

【実施例】【Example】

以下、本考案の実施例について図面を参照しつつ説明する。図1は本考案のガ ス発生器の断面図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of a gas generator of the present invention.

【0008】 まず、構成を図1に基づき説明する。図1において、ガス発生器1は外観が円 筒容器状であり、上側ハウジング2と下側ハウジング3とから成る。上側ハウジ ング2は外壁16と内壁15を有する中空円筒である。下側ハウジング3は蓋状 であり、両者は摩擦圧接又は溶接により一体化され、内壁15により中央部5と リング状の外周部12とに区画されている。また、下側ハウジング3は中央部に 上方に突出する円筒部3aが形成され、この円筒部3aには、図示されない衝突 センサを介して電流の供給を受けて作動するスクイブ17が収納され、さらに該 スクイブ17に接して伝火薬18が中央部の上方に収納されている。このスクイ ブ17と伝火薬18が点火手段を構成している。外周部12は、リング状の隔壁 4で4室に区画され、内径側上段にガス発生剤9、内径側下段に第1冷却フィル タ14、外径側下段に第2冷却フィルタ19、及び外径側上段に濾過フィルタ1 1がそれぞれ収納されている。第1、第2冷却フィルタ14、19には金網等が 、濾過フィルタ11にはセラミックフィルタ等が用いられる。そして、内壁15 には伝火薬18からガス発生室6に通じるガス孔15aが開口し、また、ガス発 生室6と第1冷却フィルタ室7とを連通する第1ガス孔4a、第1冷却フィルタ 室7と第2冷却フィルタ室10とを連通する第2ガス孔4b、第2冷却フィルタ 10と濾過フィルタ室8とを連通する第2ガス孔4cが隔壁4に開口し、さらに 、濾過フィルタ室8と外部を連通するガス孔16aが外壁16に開口している。First, the configuration will be described with reference to FIG. In FIG. 1, a gas generator 1 has a cylindrical container-like appearance, and includes an upper housing 2 and a lower housing 3. The upper housing 2 is a hollow cylinder having an outer wall 16 and an inner wall 15. The lower housing 3 has a lid shape, and both are integrated by friction welding or welding, and are divided by an inner wall 15 into a central portion 5 and a ring-shaped outer peripheral portion 12. Further, the lower housing 3 is formed at its central portion with a cylindrical portion 3a projecting upward. The cylindrical portion 3a accommodates a squib 17 which is operated by receiving a current supply via a collision sensor (not shown). A transfer charge 18 is stored above the central portion in contact with the squib 17. The squib 17 and the transfer charge 18 constitute an ignition means. The outer peripheral portion 12 is divided into four chambers by a ring-shaped partition wall 4, and the gas generating agent 9 is on the inner diameter side upper stage, the first cooling filter 14 is on the inner diameter side lower stage, the second cooling filter 19 is on the outer diameter side lower stage, and the outside. The filtration filters 11 are housed in the upper diametrical side. A wire mesh or the like is used for the first and second cooling filters 14 and 19, and a ceramic filter or the like is used for the filtration filter 11. Then, a gas hole 15a communicating from the transfer charge 18 to the gas generating chamber 6 is opened in the inner wall 15, and the first gas hole 4a and the first cooling hole 4a communicating the gas generating chamber 6 and the first cooling filter chamber 7 are provided. A second gas hole 4b that communicates the filter chamber 7 and the second cooling filter chamber 10 and a second gas hole 4c that communicates the second cooling filter 10 and the filtration filter chamber 8 open in the partition wall 4, and further, the filtration filter A gas hole 16 a that communicates the chamber 8 with the outside is opened in the outer wall 16.

【0009】 ガス発生剤9はペレット状であり、吸湿を防ぐためアルミ等の金属箔からなる リング状の密封容器13に入れてガス発生室6に収納されている。この密封容器 13内の上部にはシリコンゴム、SUS繊維等の難燃性の弾性材料からなるクッ ション材22が、ガス発生剤9との空間を埋めるように配置されている。このク ッション材22のクッション性(弾性)はガス発生剤9の重量、外部から加わる 振動の振動数等を考慮してその振動を最適に吸収するように選択される。このク ッション材22は、密封容器13の下部に配置しても構わない。そして、密封容 器13は両面接着シート21で上側ハウジング2に固着されている。このシート 21は、プラスチックフィルム等の心材21aの両面に接着性の樹脂層21bを 形成したものである。また、心材21aを、例えば発泡性のプラスチック層で構 成し、上側ハウジング2からの振動を吸収する効果を持たせるようにすることも できる。固着手段としては、この他に接着性樹脂を用いてもよい。この固着手段 は難燃性であることが望ましい。本実施例では密封容器13の上面全面に両面接 着シート21を貼付したが、ガス発生剤9の重量、両面接着シート21の接着強 度等を考慮して部分的に貼付してもよい。例えば、複数箇所、あるいは環状とす ることができる。また、固着箇所は、ガス発生室6の壁面であればよく、例えば 底面4e、外周面4d、内周面15bのいずれか、又はその組み合わせとするこ とができる。このように、密封容器13を固定するので、上下両ハウジング2、 3の接合時に寸法変化が生じても、それによって耐振性(吸振性)が影響を受け ることはない。The gas generating agent 9 is in the form of pellets, and is housed in the gas generating chamber 6 in a ring-shaped hermetically sealed container 13 made of a metal foil such as aluminum in order to prevent moisture absorption. A cushioning material 22 made of a flame-retardant elastic material such as silicon rubber or SUS fiber is arranged in the upper portion of the hermetically sealed container 13 so as to fill a space with the gas generating agent 9. The cushioning property (elasticity) of the cushioning material 22 is selected so as to optimally absorb the vibration of the gas generating agent 9 in consideration of the weight of the gas generating agent 9 and the frequency of the vibration applied from the outside. The cushion material 22 may be arranged in the lower portion of the sealed container 13. The sealed container 13 is fixed to the upper housing 2 with a double-sided adhesive sheet 21. The sheet 21 has a core material 21a such as a plastic film and adhesive resin layers 21b formed on both surfaces thereof. Further, the core material 21a may be made of, for example, a foamable plastic layer so as to have an effect of absorbing the vibration from the upper housing 2. In addition to this, an adhesive resin may be used as the fixing means. It is desirable that this fixing means be flame-retardant. In the present embodiment, the double-sided adhesive sheet 21 is attached to the entire upper surface of the hermetically sealed container 13, but it may be partially attached in consideration of the weight of the gas generating agent 9, the adhesive strength of the double-sided adhesive sheet 21, and the like. For example, it can be provided at a plurality of locations or in a ring shape. Further, the fixed portion may be the wall surface of the gas generating chamber 6, and may be, for example, any one of the bottom surface 4e, the outer peripheral surface 4d, the inner peripheral surface 15b, or a combination thereof. Since the hermetically sealed container 13 is thus fixed, even if a dimensional change occurs when the upper and lower housings 2 and 3 are joined, the vibration resistance (vibration absorption) is not affected thereby.

【0010】 つぎに、このガス発生器の作動を説明する。車両が衝突すると、スクイブ17 により着火した伝火薬18の熱風がガス孔15aを通ってガス発生室6内の密封 容器13を破って内部に流入する。この熱風によりガス発生剤9が化学反応をお こして(燃焼して)、短時間で、高温であるとともにスラグを含んだ多量のガス が発生する。発生したガスは密封容器13を破り、第1ガス孔4aから第1冷却 フィルタ室7へと流出する。そして、第1冷却フィルタ室7で第1冷却フィルタ 14と接触して冷却されるとともにスラグが除去される。そして、第2ガス孔4 bを経て第2冷却フィルタ室10へ進みここでさらに冷却されスラグ捕集された 後、第3ガス孔4cを経て最終段である濾過フィルタ室8に入る。そして、濾過 フィルタ11で微粒子的なスラグが捕集され、適温で清浄なガスとなってガス孔 16aから図示されないエアバッグ内に噴出する(矢印)。Next, the operation of this gas generator will be described. When the vehicle collides, the hot air of the transfer charge 18 ignited by the squib 17 passes through the gas holes 15a, breaks the sealed container 13 in the gas generation chamber 6, and flows into the inside. Due to this hot air, the gas generating agent 9 undergoes a chemical reaction (combustion), and a large amount of gas containing slag and having a high temperature is generated in a short time. The generated gas breaks the sealed container 13 and flows out to the first cooling filter chamber 7 from the first gas hole 4a. Then, in the first cooling filter chamber 7, the first cooling filter 14 is brought into contact with the first cooling filter 14 to be cooled and the slag is removed. Then, after passing through the second gas hole 4b to the second cooling filter chamber 10, where it is further cooled and slag is collected, it enters the last stage filtration filter chamber 8 through the third gas hole 4c. Then, the particulate slag is collected by the filtration filter 11 and becomes a clean gas at an appropriate temperature and is jetted from the gas holes 16a into the airbag (not shown) (arrow).

【0011】 そして、平常時には、外部から振動が加わると、密封容器13はガス発生器1 の本体(ハウジング2、3、隔壁4)に固着されているので、本体と一体となっ て移動し、その相対移動による異音や摩耗による密封性の劣化発生が防止される 。そして、密封容器13内のガス発生剤9は、クッション材22により振動が吸 収されてその移動が抑制され、粉化等が防止される。During normal times, when vibration is applied from the outside, the hermetically sealed container 13 is fixed to the main body (housings 2, 3 and partition wall 4) of the gas generator 1 and therefore moves integrally with the main body. The relative movement prevents abnormal noise and wear and deterioration of the sealing performance. Then, the cushioning material 22 absorbs vibrations of the gas generating agent 9 in the hermetically sealed container 13 and suppresses its movement, so that pulverization or the like is prevented.

【0012】[0012]

【考案の効果】[Effect of device]

本考案のガス発生器は、上述のように、密封容器内にガス発生剤の振動を抑制 するクッション材を配置してなるガス発生器において、密封容器を本体に固着す るので、密封容器13と本体とが一体化される。従って、従来の密封容器と本体 間にクッション材が配置された場合のように、ハウジング接合時の寸法変化によ る圧縮代の不安定さから密封容器13と本体との相対移動が生じて異音等が発生 するようなことはなく、密封容器やガス発生剤の耐振性を向上させることが可能 である。 In the gas generator of the present invention, as described above, in the gas generator in which the cushion material for suppressing the vibration of the gas generating agent is arranged in the sealed container, the sealed container is fixed to the main body, so that the sealed container 13 And the body are integrated. Therefore, as in the case where the cushion material is arranged between the conventional sealed container and the main body, the relative movement between the sealed container 13 and the main body occurs due to the instability of the compression margin due to the dimensional change at the time of joining the housings. No noise is generated and it is possible to improve the vibration resistance of the sealed container and the gas generating agent.

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

【図1】本考案のガス発生器の断面図である。FIG. 1 is a sectional view of a gas generator of the present invention.

【符号の説明】[Explanation of symbols]

1 ガス発生器 2 上側ハウジング 3 下側ハウジング 4 隔壁 4a 第1ガス孔 4b 第2ガス孔 4c 第3ガス孔 6 ガス発生室 7 第1冷却フィルタ室(フィルタ室) 8 濾過フィルタ室(フィルタ室) 9 ガス発生剤 10 第2冷却フィルタ室(フィルタ室) 13 密封容器 16 外壁(ハウジング) 16a ガス孔 21 両面接着シート(固着手段) 22 クッション材 1 Gas Generator 2 Upper Housing 3 Lower Housing 4 Partition 4a First Gas Hole 4b Second Gas Hole 4c Third Gas Hole 6 Gas Generation Chamber 7 First Cooling Filter Chamber (Filter Chamber) 8 Filtration Filter Chamber (Filter Chamber) 9 Gas Generating Agent 10 Second Cooling Filter Chamber (Filter Chamber) 13 Sealed Container 16 Outer Wall (Housing) 16a Gas Hole 21 Double-sided Adhesive Sheet (Fixing Means) 22 Cushion Material

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 円筒容器状のハウジング内に、隔壁で区
画されたガス発生室とフィルタ室とを備え、前記ガス発
生室で発生したガスを隔壁及びハウジングに設けたガス
孔でフィルタ室を経て外部へ放出するよう構成し、前記
ガス発生室にガス発生剤を密封容器に収納して配置して
なるエアバッグ用ガス発生器において、前記密封容器を
ハウジング及び/又は隔壁に接着剤で固着したことを特
徴とするエアバッグ用ガス発生器。
1. A cylindrical container-shaped housing is provided with a gas generating chamber and a filter chamber which are partitioned by a partition wall, and gas generated in the gas generating chamber is passed through the filter chamber through a gas hole provided in the partition wall and the housing. In a gas generator for an air bag configured to be discharged to the outside and having a gas generating agent housed in a hermetically sealed container and arranged in the gas generating chamber, the hermetically sealed container is fixed to a housing and / or a partition wall with an adhesive. A gas generator for an air bag characterized by the above.
【請求項2】 前記密封容器をハウジング及び/又は隔
壁に両面接着シートで固着してなる請求項1記載のエア
バッグ用ガス発生器。
2. The gas generator for an air bag according to claim 1, wherein the hermetically sealed container is fixed to the housing and / or the partition wall with a double-sided adhesive sheet.
JP071205U 1993-12-03 1993-12-03 Gas generator for airbag Pending JPH0733758U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP071205U JPH0733758U (en) 1993-12-03 1993-12-03 Gas generator for airbag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP071205U JPH0733758U (en) 1993-12-03 1993-12-03 Gas generator for airbag

Publications (1)

Publication Number Publication Date
JPH0733758U true JPH0733758U (en) 1995-06-23

Family

ID=13453952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP071205U Pending JPH0733758U (en) 1993-12-03 1993-12-03 Gas generator for airbag

Country Status (1)

Country Link
JP (1) JPH0733758U (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0392447A (en) * 1989-09-04 1991-04-17 Daicel Chem Ind Ltd Gas generator
JPH04306151A (en) * 1990-12-18 1992-10-28 Trw Inc Air bag expander and forming method thereof
JPH06227358A (en) * 1993-02-03 1994-08-16 Nippon Kayaku Co Ltd Gas generator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0392447A (en) * 1989-09-04 1991-04-17 Daicel Chem Ind Ltd Gas generator
JPH04306151A (en) * 1990-12-18 1992-10-28 Trw Inc Air bag expander and forming method thereof
JPH06227358A (en) * 1993-02-03 1994-08-16 Nippon Kayaku Co Ltd Gas generator

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