JPH0616099A - Air bag - Google Patents
Air bagInfo
- Publication number
- JPH0616099A JPH0616099A JP17231392A JP17231392A JPH0616099A JP H0616099 A JPH0616099 A JP H0616099A JP 17231392 A JP17231392 A JP 17231392A JP 17231392 A JP17231392 A JP 17231392A JP H0616099 A JPH0616099 A JP H0616099A
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- airbag
- air bag
- manufacturing process
- base cloth
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/235—Inflatable members characterised by their material
- B60R2021/23571—Inflatable members characterised by their material characterised by connections between panels
- B60R2021/2358—Bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
Abstract
Description
【０００１】[0001]
【発明の技術分野】本発明は、通常時はハンドル等の内
部に折り畳まれて収納されており、車両が強い衝撃を受
けると、センサがこれを感知して瞬時に膨張し、乗員を
保護するエアバッグに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is normally folded and housed inside a steering wheel or the like. When a vehicle receives a strong impact, a sensor senses this and instantly expands to protect an occupant. It relates to airbags.
【０００２】[0002]
【発明の技術的背景とその問題点】近年、自動車の座席
前方に備えられる安全装置として、いわゆるエアバッグ
装置が広く用いられるようになった。このエアバッグ装
置は、袋状のエアバッグと、自動車に与えられた衝撃を
感知するセンサと、このセンサによってエアバッグ内に
瞬時にガスを送り込んでエアバッグを膨張させるインフ
レータとを備えて構成されている。上記エアバッグは、
通常時はハンドル等の内部に折り畳まれて収納されてい
るが、自動車が衝突事故等によって強い衝撃を受ける
と、ダッシュボードフロアやフロントフロアのセンター
に配置されているセンサがその衝撃を感知し、上記イン
フレータにおいてアジ化ナトリウムなどを主成分とする
ガス発生剤を反応させて窒素ガスを発生させるととも
に、この窒素ガスを上記エアバッグ内に送り込んでエア
バッグを瞬時に膨張させるようになっている。すなわ
ち、エアバッグ装置は、自動車事故発生の際の衝撃を感
知してエアバッグを瞬時に膨張させ、この膨張させたエ
アバッグにより、自動車事故発生時における乗員への衝
撃を効果的に緩和して乗員の身体を保護するという重大
な役割を有しているものである。一般に、このようなエ
アバッグ装置のエアバッグは、ナイロン樹脂等の合成樹
脂からなる織布の一方の面側（エアバッグの内面側とな
る方）にクロロプレンゴム（特開昭49-55028号公報）や
シリコーンゴム被膜（特開平２-270654 号公報）が形成
された布材を所定の形状に裁断し、得られた複数枚の基
布を袋状に縫製したものである。また、上記袋体の内面
に形成されている被膜は、織布に気密性を付与するとと
もに、エアバッグが展開する瞬間、エアバッグ内に一気
に圧入される高温のガスにナイロン織布が直接曝露され
るのを防いでナイロン樹脂が溶融劣化するのを防止し、
延いては高温ガスから乗員を保護する機能を有するもの
である。従って、この被膜には、ある程度の耐熱性が要
求される。一方、エアバッグは、通常時は、折り畳まれ
てハンドル内等に収納しておく必要があり、またその収
納部分の省スペース化が望まれていることから、なるべ
くコンパクトに折り畳むことが可能なものであることが
望ましい。従って、上記被膜としては、当初はクロロプ
レンゴムが主体に用いられていたが、近年は、膜厚が薄
くても上述した機能を十分発揮しうるシリコーンを主体
とするものに移行してきているが、縫製で組み立てられ
ていることに変わりはない。しかしながら、上記従来の
エアバッグは、上述した通り縫製品であるために、その
製造工程には縫製作業が必須であり、しかもこの縫製作
業は、数種の異なる糸を用いることや、ボビンの交換を
人手に頼っていることなどの問題があった。また、縫製
作業は、上述したように煩雑な作業であるため、その自
動化が困難であった。従って、上記従来のエアバッグ
は、縫製品であるゆえ極めて生産効率が悪く、結果的に
エアバッグの製造コストを押し上げることとなってい
る。また、縫製のみによる接合では、エアバッグの耐圧
性が必ずしも十分であるとは言えないため、この縫製部
分からのエア漏れを防ぐために目どめテープやシール材
などを用いた２次的な処理が成されており、製造上の煩
雑さがあった。この他に、フロスの生地を超音波や熱で
融着する方法も提案されているが、接合部でフロスの強
度を低下させたり、融着した樹脂が厚く固まって柔軟性
が損なわれ、折り畳んでの収納に支障が生じるなどの問
題がある。又、クロロプレンやシリコーンによりコーテ
ィングされたフロスは、被膜が熱で容易には溶融しない
ので、この様な方法をとることも製造上の煩雑さがある
のみならず、エアバッグの機能低下の問題もある。TECHNICAL BACKGROUND AND PROBLEMS OF THE INVENTION In recent years, a so-called airbag device has been widely used as a safety device provided in front of a seat of an automobile. This airbag device is configured to include a bag-shaped airbag, a sensor that senses a shock given to an automobile, and an inflator that instantaneously injects gas into the airbag by the sensor to inflate the airbag. ing. The airbag is
Normally, it is folded and stored inside the steering wheel etc., but when a car receives a strong impact due to a collision accident etc., the sensors located in the center of the dashboard floor and the front floor detect the impact, In the inflator, a gas generating agent containing sodium azide as a main component is reacted to generate nitrogen gas, and the nitrogen gas is sent into the airbag to inflate the airbag instantaneously. That is, the airbag device senses a shock when an automobile accident occurs and instantly inflates the airbag, and the inflated airbag effectively reduces the impact on the occupant when the automobile accident occurs. It has an important role of protecting the occupant's body. Generally, an airbag of such an airbag device has a chloroprene rubber on one surface side (the inner surface side of the airbag) of a woven cloth made of synthetic resin such as nylon resin (Japanese Patent Laid-Open No. 49-55028). ) Or a silicone rubber coating (Japanese Patent Laid-Open No. 2-270654) is cut into a predetermined shape, and the obtained plurality of base cloths are sewn into a bag shape. Further, the film formed on the inner surface of the bag body provides airtightness to the woven fabric, and at the moment the airbag is deployed, the nylon woven fabric is directly exposed to the high temperature gas that is suddenly pressed into the airbag. To prevent the nylon resin from melting and deteriorating,
Furthermore, it has a function of protecting the occupant from high temperature gas. Therefore, this coating is required to have some heat resistance. On the other hand, an airbag needs to be folded and stored in a handle or the like at normal times, and it is desired to save space in the storing portion, so that the airbag can be folded as compactly as possible. Is desirable. Therefore, as the coating film, chloroprene rubber was initially used as a main component, but in recent years, it has been shifted to a silicone-based component that can sufficiently exhibit the above-mentioned functions even if the film thickness is thin, It is still assembled by sewing. However, since the above-mentioned conventional airbag is a sewn product as described above, the sewing work is indispensable in the manufacturing process, and this sewing work uses several kinds of different threads and bobbin replacement. There were problems such as relying on human resources. Further, since the sewing work is a complicated work as described above, it is difficult to automate it. Therefore, since the above-mentioned conventional airbag is a sewn product, the production efficiency is extremely low, and as a result, the manufacturing cost of the airbag is increased. In addition, since it cannot be said that the pressure resistance of the airbag is necessarily sufficient with joining only by sewing, a secondary treatment using a wrapping tape or a sealing material to prevent air leakage from this sewing portion. Was made, and there was complexity in manufacturing. In addition to this, a method of fusing the floss cloth with ultrasonic waves or heat has been proposed, but it reduces the strength of the floss at the joint, or the fused resin becomes thick and hardened, resulting in poor flexibility and folding. There is a problem such as a problem in storage at. In addition, since the coating film of floss coated with chloroprene or silicone does not easily melt by heat, not only is there a manufacturing complexity even if such a method is adopted, but there is also a problem that the function of the airbag deteriorates. is there.
【０００３】[0003]
【発明の目的】本発明は上記事情に鑑みなされたもの
で、エアバッグを製造する際の基布の接合工程を、縫製
に代えて接着剤によるものとして製造工程の簡略化を図
るとともに、接合工程の自動化（例えば、接着剤を自動
吐出機等で塗布した後に硬化させる）を可能せしめ、こ
れにより製造工程の大幅な合理化を実現してエアバッグ
の製造コストを抑えること、および接合手段である接着
剤として、耐熱性、耐侯性の優れたものを選択すること
により、耐圧性の優れたエアバッグの提供を目的とす
る。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and simplifies the manufacturing process by using an adhesive instead of sewing for the base fabric bonding process when manufacturing an airbag. It is possible to automate the process (for example, apply the adhesive with an automatic dispenser and then cure it), thereby realizing a significant rationalization of the manufacturing process, suppressing the manufacturing cost of the airbag, and a joining means. It is an object of the present invention to provide an air bag having excellent pressure resistance by selecting an adhesive having excellent heat resistance and weather resistance.
【０００４】[0004]
【発明の構成】即ち本発明は、所定の形状に裁断された
複数枚の基布を接合してなる袋体をインフレータからの
圧力気体により膨張展開せしめて用いるエアバッグにお
いて、上記基布の接合部分の一部又は全部が接着剤によ
り接着されていることを特徴とするエアバッグである。
本発明のエアバッグにあっては、基布の接合部分の一部
又は全部の接合手段を、接着剤による接着としたので、
エアバッグ作製の際に縫製の工程を省略できる。従っ
て、エアバッグ製造工程の簡略化および接合工程の自動
化（例えば、接着剤を自動吐出機等で塗布した後に硬化
させる）が可能となり、これにより製造工程の大幅な合
理化が実現される。また、基布の接合部分の一部又は全
部の接合手段を接着剤による接着としたので、接合部分
における縫穴の一部又は全てが無くなり、この縫穴に起
因するエア漏れ等の不都合が減少又は解消されることと
なり、エアバッグの気密性が向上する。本発明は、エア
バッグにおける基布の接合部分の一部又は全部の接合手
段に特徴を有し、その他の構成は従来のものがそのまま
適用でき、例えば基布としては、前記ナイロン樹脂等の
合成樹脂からなる織布の一方の内面側にクロロプレンゴ
ムやシリコーンゴム被膜が形成されたものを用いること
ができる。That is, the present invention is an air bag that is used by inflating and expanding a bag body formed by joining a plurality of base cloths cut into a predetermined shape with a pressure gas from an inflator. The airbag is characterized in that a part or all of the portion is adhered with an adhesive.
In the airbag of the present invention, since a part or all of the joining means of the joining portion of the base cloth is bonded by an adhesive,
The sewing process can be omitted when manufacturing the airbag. Therefore, the airbag manufacturing process can be simplified and the bonding process can be automated (for example, the adhesive is applied by an automatic dispenser or the like and then cured), whereby the manufacturing process can be significantly rationalized. Further, since a part or all of the joining means of the base cloth is bonded by an adhesive, some or all of the sewing holes at the joining parts are eliminated, and the inconvenience such as air leakage due to the sewing holes is reduced. Alternatively, the airtightness of the airbag is improved. The present invention is characterized by the joining means for a part or all of the joining portion of the base cloth in the airbag, and other conventional constructions can be applied as it is. For example, as the base cloth, a synthetic material such as the nylon resin can be used. It is possible to use a woven cloth made of a resin, on one side of which an inner surface side is coated with a chloroprene rubber or a silicone rubber coating.
【０００５】本発明で用いる接着剤は、短時間で十分な
接着性を発揮し、且つ通常の自動車の使用期間中におい
て十分な接着性を維持し、更に展開時の高温にも耐えう
ることが要求され、このような接着剤としては、例えば
シリコーン系、ウレタン系、エポキシ系、アクリル系、
クロロプレン系などが挙げられるが、特にナイロン基布
やシリコーンゴムなどに対する接着性が極めて優れ、し
かも耐熱性や耐侯性にも優れていることから、シリコー
ン系接着剤が好ましい。シリコーン系接着剤としては、
短時間で充分な接着性を発揮し、作業効率も良いことか
ら、加熱硬化型の液状シリコーンゴムが特に好ましく、
一般にはメチルビニルシロキサンとメチルハイドロジェ
ンシロキサンを白金触媒の存在下に付加重合させる付加
型液状シリコーンに、基布への接着付与剤としてアミノ
基、ビニル基、（メタ）アクリロキシ基等のケイ素原子
に結合する官能基を有するアルコキシシランなどの周知
のシランカップリング剤を添加したものが良いが、室温
硬化型のシラノール基を有するポリオルガノシロキサン
と架橋剤を有機スズ触媒などで縮合反応させる縮合型液
状シリコーンゴムを用いることもできる。The adhesive used in the present invention exhibits sufficient adhesiveness in a short period of time, maintains sufficient adhesiveness during normal use of an automobile, and can withstand high temperatures during deployment. Required as such adhesives are, for example, silicone-based, urethane-based, epoxy-based, acrylic-based,
Examples thereof include chloroprene-based adhesives. Particularly, silicone-based adhesives are preferable because they have extremely excellent adhesiveness to nylon base cloth, silicone rubber, etc., and also have excellent heat resistance and weather resistance. As a silicone adhesive,
A heat-curable liquid silicone rubber is particularly preferable because it exhibits sufficient adhesiveness in a short time and has good work efficiency.
Generally, methyl vinyl siloxane and methyl hydrogen siloxane are added to an addition type liquid silicone that undergoes addition polymerization in the presence of a platinum catalyst, and an amino group, vinyl group, (meth) acryloxy group It is preferable to add a well-known silane coupling agent such as alkoxysilane having a functional group to be bonded, but a condensation type liquid in which a polyorganosiloxane having a room temperature curing type silanol group and a crosslinking agent are subjected to a condensation reaction with an organic tin catalyst or the like. Silicone rubber can also be used.
【０００６】[0006]
【実施例】以下、図面を用いて本発明の実施例を説明す
る。図１〜図５は、本発明にかかるエアバッグの一実施
例を示すもので、図中符号１は袋状のエアバッグ、２は
インフレータ、３，４は一対の円形基布である。但し、
本発明の適用できるエアバッグの構造は図１〜図５に示
されるものに限定されるものではない。上記エアバッグ
１は、２枚の円形基布３，４それぞれの周縁部同士を接
着剤によって接着して形成され、円形基布４の中央部に
は、インフレータ２取り付け用の孔部Ｈが形成されてい
る。また、この円形基布３，４は、エアバッグの内側と
なる方の面にシリコーンゴム被膜が形成された合成樹脂
製の織布からなり、この合成樹脂としては、ナイロンな
どのポリアミド樹脂が好適である。また、図３に示すよ
うに、エアバッグ内部の円形基布３と円形基布４との間
には、十字型の補強基布７が架設されている。この補強
基布７は、上述した円形基布３，４と同一材料からなる
織布で、同一の十字型基布２枚を掌合させて重ね、各基
布の交差部同士及び、この交差部近傍の対応する部位同
士を接着して一体化したもので、その一方の面の全面が
円形基布３の内面側中心部に接着剤で貼着され、他方面
側の４つの補強帯ａ〜ｄの端部が円形基布４内面側の孔
部Ｈの周縁部近傍に接着剤で固着されている。さらに、
上記十字型の補強基布７の一方の面と、円形基布３の内
面側中心部との接着部分は、図１に示すように、一方の
面側に上述した接着剤が塗布された長方形の補強基布１
０により、補強されている。Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show an embodiment of an airbag according to the present invention. In the drawings, reference numeral 1 is a bag-shaped airbag, 2 is an inflator, and 3 and 4 are a pair of circular base cloths. However,
The structure of the airbag to which the present invention can be applied is not limited to that shown in FIGS. The airbag 1 is formed by adhering the peripheral portions of the two circular base fabrics 3 and 4 to each other with an adhesive, and a hole H for attaching the inflator 2 is formed in the center of the circular base fabric 4. Has been done. The circular base cloths 3 and 4 are made of synthetic resin woven cloth having a silicone rubber coating on the inner surface of the airbag. As the synthetic resin, polyamide resin such as nylon is suitable. Is. Further, as shown in FIG. 3, a cross-shaped reinforcing base cloth 7 is provided between the circular base cloth 3 and the circular base cloth 4 inside the airbag. The reinforcing base cloth 7 is a woven cloth made of the same material as the circular base cloths 3 and 4 described above, and two identical cross-shaped base cloths are overlapped with each other so as to overlap each other, and the intersections of the respective base cloths and the intersections thereof. Corresponding parts in the vicinity of the part are adhered and integrated, and the entire surface of one surface is adhered to the center part on the inner surface side of the circular base cloth 3 with an adhesive, and the four reinforcing bands a on the other surface side The end portions of ~ d are fixed to the vicinity of the peripheral portion of the hole portion H on the inner surface side of the circular base cloth 4 with an adhesive. further,
As shown in FIG. 1, the adhesive portion between one surface of the cross-shaped reinforcing base cloth 7 and the center portion on the inner surface side of the circular base cloth 3 is a rectangle in which the above-mentioned adhesive is applied to one surface side. Reinforcement base cloth 1
It is reinforced by 0.
【０００７】本実施例のエアバッグ１は、上記構成とし
たので、エアバッグ膨張時、円形基布３に瞬間的に加圧
されるであろう数十kg／cmもの高圧にも十分余裕をもっ
て耐えることができる。また、円形基布４の孔部Ｈの周
縁には、インフレータ２が接合され、この接合部分は補
強基布５，６，８，９により補強されている。この円形
基布４と、インフレータとの接合部の補強構成は、図４
に示すようになり、図４の斜線部が接着部位である。Since the airbag 1 of this embodiment has the above-mentioned structure, it has a sufficient allowance even for a high pressure of several tens kg / cm which will be momentarily pressurized to the circular base cloth 3 when the airbag is inflated. Can bear. The inflator 2 is joined to the peripheral edge of the hole H of the circular base cloth 4, and the joint portion is reinforced by the reinforcing base cloths 5, 6, 8 and 9. The reinforcing structure of the joint between the circular base cloth 4 and the inflator is shown in FIG.
As shown in FIG. 4, the shaded area in FIG. 4 is the adhesion site.
【０００８】次に、上記液状シリコーン接着剤を織布の
接合手段として用いた場合の、本実施例のエアバッグ製
造の際における基布の接合操作について説明する。ま
ず、接合しようとする２枚の基布の一方又は双方の接合
面に液状シリコーン接着剤を吐出する（塗布する）。次
に、接着剤を塗布した２枚の基布の各接合面（接着剤の
塗布面）を突き合わせ、これを加熱圧着する。この極め
て簡易な操作により、２枚の基布は強固かつ気密に接合
されることとなる。また、このような液状のシリコーン
接着剤を用いる場合、市販のミキシングマシーンを用い
て混合吐出させることが可能なので、この接着剤の塗布
工程を自動化させることができる。Next, the operation of joining the base fabrics in the production of the air bag of this embodiment when the liquid silicone adhesive is used as a means for joining the woven fabrics will be described. First, the liquid silicone adhesive is discharged (applied) onto one or both of the joint surfaces of the two base fabrics to be joined. Next, the joint surfaces (adhesive coating surfaces) of the two base cloths coated with the adhesive are abutted against each other, and these are heat-pressed. By this extremely simple operation, the two base fabrics are joined firmly and airtightly. Further, when such a liquid silicone adhesive is used, it is possible to mix and discharge using a commercially available mixing machine, so that the application process of this adhesive can be automated.
【０００９】実施例１〜６、比較例１〜２ 上述した実施例のエアバッグ１を以下の条件で実際に作
製した。円形基布３，４及び補強基布５，６，７，８，
９，１０に以下の接着剤を塗布し、所定の硬化条件で硬
化させてエアバッグ１を作製した。 〔接着剤〕 A1：付加反応型液状シリコーンゴムＴＳＥ３４５３（東
芝シリコーン（株）製；硬化したゴムの機械的特性は、
硬さ40、引張強さ65kgf/cm2 、伸び400 ％）100 重量部
に接着助剤として下記式で示される化合物を１重量部配
合した付加型シリコーン接着剤Examples 1 to 6 and Comparative Examples 1 to 2 The airbag 1 of the above-described example was actually manufactured under the following conditions. Circular base fabrics 3, 4 and reinforcing base fabrics 5, 6, 7, 8,
The following adhesives were applied to 9 and 10 and cured under predetermined curing conditions to produce the airbag 1. [Adhesive] A1: Addition reaction type liquid silicone rubber TSE3453 (manufactured by Toshiba Silicone Co., Ltd.);
Hardness 40, tensile strength 65 kgf / cm 2 , elongation 400%) 100 parts by weight of addition type silicone adhesive containing 1 part by weight of a compound represented by the following formula as an adhesion aid.
【００１０】[0010]
【化１】 [Chemical 1]
【００１１】A2：縮合反応型液状シリコーンゴムＴＳＥ
３９２（東芝シリコーン（株）製；硬化したゴムの機械
的特性は、硬さ30、引張強さ16kgf/cm2 、伸び390
％）；縮合型シリコーン接着剤 A3：エポキシ系接着剤ＭＯＳ７（コニシ（株）製） A4：クロロプレン系接着剤１５２１Ｃ（コニシ（株）
製） 〔基布の状態〕 B1：40g/m2のシリコーンゴムでコーティング B2：100g/m2 のクロロプレンゴムでコーティング B3：コーティングなし 〔硬化条件〕各接着剤の機能が一般の基材で発揮される
ようにした。 A1：150 ℃、10分 A2：25℃、３日 A3：25℃、３日 A4：25℃、３日 〔接着機能〕このエアバッグ内に、85℃雰囲気の高温ガ
スを導入して、エアバッグ内の圧力が膨張開始から、２
m sec(0.02sec)で最高3.6kgf/cm2となるように膨張させ
た後、接合部の破壊、剥離の有無、エア漏れを調査し
た。また、円形基布３，４の接合部分についてＪＩＳ
Ｋ６３０１に準じた剥離強さの測定を行った。 〔耐久性〕エアバッグを110 ℃下で1000時間放置後、再
度膨張させ、接合部の破壊、剥離の有無、エア漏れを調
査した。これらの結果を表１に示す。尚、エアバッグの
爆発時（膨張時）には２m sec で500kgf以上もの荷重が
かかると言われ、エアバッグの全ての接着面積で、この
条件に耐えうる強度を持つ接着剤が必要であるが、実施
例は十分にこの条件を満たすものであった。特に実施例
１、２に用いた付加型液状シリコーンゴムは短時間に硬
化し、接着層が0.5mmという薄さで十分な接着力が得ら
れるため、エアバッグの接着剤として極めて優れている
ものである。A2: Condensation reaction type liquid silicone rubber TSE
392 (manufactured by Toshiba Silicone Co., Ltd .; mechanical properties of the cured rubber are hardness 30, tensile strength 16 kgf / cm 2 , elongation 390
%); Condensation type silicone adhesive A3: Epoxy adhesive MOS7 (Konishi Co., Ltd.) A4: Chloroprene adhesive 1521C (Konishi Co., Ltd.)
[Production state] B1: 40 g / m 2 of silicone rubber coated B2: 100 g / m 2 of chloroprene rubber B3: uncoated [Curing conditions] The function of each adhesive is exerted on general base materials I was made to do it. A1: 150 ℃, 10 minutes A2: 25 ℃, 3 days A3: 25 ℃, 3 days A4: 25 ℃, 3 days [Adhesive function] Introduce a high temperature gas of 85 ℃ atmosphere into this air bag Since the pressure in the bag starts to expand, 2
After inflating it to a maximum of 3.6 kgf / cm 2 in m sec (0.02 sec), the joint was broken, peeled, and air leakage was investigated. Also, regarding the joints of the circular base fabrics 3 and 4, JIS
The peel strength was measured according to K6301. [Durability] The airbag was left standing at 110 ° C. for 1000 hours and then inflated again, and the fracture and peeling of the joint and the air leakage were investigated. The results are shown in Table 1. It is said that when the airbag explodes (expands), a load of 500 kgf or more is applied in 2 msec, and an adhesive that has the strength to withstand this condition is required for the entire adhesive area of the airbag. The example sufficiently satisfies this condition. In particular, the addition type liquid silicone rubber used in Examples 1 and 2 is extremely excellent as an adhesive agent for airbags because it cures in a short time and a sufficient adhesive force can be obtained with a thin adhesive layer of 0.5 mm. Is.
【００１２】[0012]
【表１】 [Table 1]
【００１３】[0013]
【発明の効果】以上述べたように、本発明のエアバッグ
にあっては、基布の接合部分の一部又は全部の接合手段
を、接着剤による接着としたので、エアバッグ作製の際
に縫製の工程を省略できる。従って、エアバッグ製造工
程の簡略化および接合工程の自動化（例えば、接着剤を
自動吐出機等で塗布した後に硬化させる）が可能とな
り、これにより製造工程の大幅な合理化が実現され、製
造コストの低減化を図ることができる。又、接合部分に
おける縫穴の一部又は全てが無くなり、この縫穴に起因
するエア漏れ等の不都合が減少又は解消されることとな
り、エアバッグの気密性が向上する。As described above, in the airbag of the present invention, the bonding means of a part or the whole of the bonding portion of the base cloth is bonded by an adhesive, and therefore, when manufacturing the airbag. The sewing process can be omitted. Therefore, the airbag manufacturing process can be simplified and the bonding process can be automated (for example, the adhesive is applied by an automatic dispenser or the like and then cured), thereby significantly streamlining the manufacturing process and reducing the manufacturing cost. It can be reduced. Further, some or all of the sewing holes in the joint portion are eliminated, and the inconvenience such as air leakage due to the sewing holes is reduced or eliminated, and the airtightness of the airbag is improved.
【図１】 本発明に係るエアバッグの一実施例を示す図
で、エアバッグ膨張時における断面図である。FIG. 1 is a diagram showing an embodiment of an airbag according to the present invention and is a cross-sectional view when an airbag is inflated.
【図２】 図１中符号３で示される円形基布の内面側を
表す図であって、エアバッグ１のＡ−Ａ線断面図であ
る。FIG. 2 is a view showing an inner surface side of a circular base cloth indicated by reference numeral 3 in FIG. 1, and is a cross-sectional view of the airbag 1 taken along the line AA.
【図３】 図１中符号４で示される円形基布の内面側を
表す図であって、エアバッグ１のＡ−Ａ線断面図であ
る。FIG. 3 is a view showing the inner surface side of the circular base cloth indicated by reference numeral 4 in FIG. 1, and is a cross-sectional view of the airbag 1 taken along the line AA.
【図４】 図１中符号Ｂで示される部分の拡大図であ
る。FIG. 4 is an enlarged view of a portion indicated by reference numeral B in FIG.
【図５】 図１中符号Ｃで示される部分の拡大図であ
る。5 is an enlarged view of a portion indicated by reference numeral C in FIG. 1. FIG.
１…エアバッグ ２…インフレータ ３，４…円形基布 ５，６，７，８，９，１０…補強基布 1 ... Airbag 2 ... Inflator 3,4 ... Circular base cloth 5,6,7,8,9,10 ... Reinforcement base cloth
Claims (2)
接合してなる袋体をインフレータからの圧力気体により
膨張展開せしめて用いるエアバッグにおいて、上記基布
の接合部分の一部又は全部が接着剤により接着されてい
ることを特徴とするエアバッグ。1. An airbag used by inflating and expanding a bag body, which is formed by joining a plurality of base cloths cut into a predetermined shape, with a pressure gas from an inflator, or a part of the joint portion of the base cloth or An airbag characterized in that all are adhered with an adhesive.
項１記載のエアバッグ。2. The airbag according to claim 1, wherein the adhesive is a silicone adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17231392A JPH0616099A (en) | 1992-06-30 | 1992-06-30 | Air bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17231392A JPH0616099A (en) | 1992-06-30 | 1992-06-30 | Air bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0616099A true JPH0616099A (en) | 1994-01-25 |
Family
ID=15939604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17231392A Pending JPH0616099A (en) | 1992-06-30 | 1992-06-30 | Air bag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0616099A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5669632A (en) * | 1995-11-03 | 1997-09-23 | Morton International, Inc. | Airbag tether and attachment seam |
| WO1998012075A1 (en) * | 1996-09-18 | 1998-03-26 | Minnessota Mining And Manufacturing Company | Adhesively-bonded inflatable restraint and method of making |
| WO1999014082A1 (en) * | 1996-09-18 | 1999-03-25 | Minnesota Mining And Manufacturing Company | Adhesively-bonded inflatable restraint and method of making |
| EP0962363A1 (en) * | 1998-06-01 | 1999-12-08 | Takata Corporation | Airbag |
| US6344251B1 (en) | 1988-12-01 | 2002-02-05 | Milliken & Company | Welded airbag structure |
| US6364356B1 (en) | 1999-09-24 | 2002-04-02 | Milliken & Company | Airbag cushion comprising sewn reinforcement seams |
| JP2005313877A (en) * | 2004-04-02 | 2005-11-10 | Nippon Plast Co Ltd | Air bag |
| EP1683686A1 (en) * | 2005-01-25 | 2006-07-26 | TRW Automotive Safety Systems GmbH | Airbag for a restraint system |
| JP2010511568A (en) * | 2006-12-06 | 2010-04-15 | ダウ・コーニング・コーポレイション | Air bag and assembling method thereof |
| US8256478B2 (en) | 2009-10-28 | 2012-09-04 | The Yokohama Rubber Co., Ltd | Pneumatic tire |
-
1992
- 1992-06-30 JP JP17231392A patent/JPH0616099A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6344251B1 (en) | 1988-12-01 | 2002-02-05 | Milliken & Company | Welded airbag structure |
| US5669632A (en) * | 1995-11-03 | 1997-09-23 | Morton International, Inc. | Airbag tether and attachment seam |
| WO1998012075A1 (en) * | 1996-09-18 | 1998-03-26 | Minnessota Mining And Manufacturing Company | Adhesively-bonded inflatable restraint and method of making |
| WO1999014082A1 (en) * | 1996-09-18 | 1999-03-25 | Minnesota Mining And Manufacturing Company | Adhesively-bonded inflatable restraint and method of making |
| EP0962363A1 (en) * | 1998-06-01 | 1999-12-08 | Takata Corporation | Airbag |
| US6364356B1 (en) | 1999-09-24 | 2002-04-02 | Milliken & Company | Airbag cushion comprising sewn reinforcement seams |
| JP2005313877A (en) * | 2004-04-02 | 2005-11-10 | Nippon Plast Co Ltd | Air bag |
| EP1683686A1 (en) * | 2005-01-25 | 2006-07-26 | TRW Automotive Safety Systems GmbH | Airbag for a restraint system |
| JP2010511568A (en) * | 2006-12-06 | 2010-04-15 | ダウ・コーニング・コーポレイション | Air bag and assembling method thereof |
| US8287685B2 (en) | 2006-12-06 | 2012-10-16 | Dow Corning Corporation | Airbag and process for its assembly |
| KR101366159B1 (en) * | 2006-12-06 | 2014-02-24 | 다우 코닝 코포레이션 | Airbag and process for its assembly |
| US8256478B2 (en) | 2009-10-28 | 2012-09-04 | The Yokohama Rubber Co., Ltd | Pneumatic tire |
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