JPH06127330A - Air bag for air bag device - Google Patents

Air bag for air bag device

Info

Publication number
JPH06127330A
JPH06127330A JP4279030A JP27903092A JPH06127330A JP H06127330 A JPH06127330 A JP H06127330A JP 4279030 A JP4279030 A JP 4279030A JP 27903092 A JP27903092 A JP 27903092A JP H06127330 A JPH06127330 A JP H06127330A
Authority
JP
Japan
Prior art keywords
airbag
vent hole
air bag
peripheral surface
strap
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.)
Withdrawn
Application number
JP4279030A
Other languages
Japanese (ja)
Inventor
Noriyuki Horiuchi
範之 堀内
Yuji Kuriyama
雄治 栗山
Shinichi Yasui
慎一 安井
Masaru Higashiura
賢 東浦
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.)
Toyota Motor Corp
Toyoda Gosei Co Ltd
Original Assignee
Toyota Motor Corp
Toyoda Gosei 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 Toyota Motor Corp, Toyoda Gosei Co Ltd filed Critical Toyota Motor Corp
Priority to JP4279030A priority Critical patent/JPH06127330A/en
Publication of JPH06127330A publication Critical patent/JPH06127330A/en
Withdrawn legal-status Critical Current

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
    • B60R21/239—Inflatable members characterised by their venting means
    • 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
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B60R2021/23382—Internal tether means
    • 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
    • B60R21/239—Inflatable members characterised by their venting means
    • B60R2021/2395—Inflatable members characterised by their venting means comprising means to control the venting

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

PURPOSE:To provide an air bag for an air bag device formed in such a way as to reduce pressure loss up to the completion of expansion so as to shorten the time up to the completion of expansion and to allow vent holes to be opened rapidly in order to lower internal pressure at the time of load being applied to the air bag after the completion of expansion. CONSTITUTION:This air bag 1 is provided with vent holes 6 disposed at the peripheral edge of a gas inflow port 5, and straps 7 for regulating expansion shape. In each strap 7, one end side is fastened to a ceiling part 3 on the inner peripheral face side of the air bag 1, and the other end side is inserted through to the outer peripheral side from the inner peripheral side of the air bag 1 in the vicinity of the vent hole 6, extended in such a way as to close the vent hole 6 on the outer peripheral side of the air bag 1, and fastened to the peripheral edge of the vent hole 6.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は、車両のステアリング
ホイールや助手席前方のインストルメントパネル等に装
着されるエアバッグ装置のエアバッグに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag of an airbag device mounted on a steering wheel of a vehicle, an instrument panel in front of a passenger seat or the like.

【０００２】[0002]

【従来の技術】従来、エアバッグ装置のエアバッグにお
いては、インフレーターから供給されるガスによって、
所定形状に膨らんだ後、エアバッグの内圧が所定以上に
高くならないようにするため、ガスをエアバッグから排
出するベントホールを備えていた。2. Description of the Related Art Conventionally, in an airbag of an airbag device, gas supplied from an inflator causes
In order to prevent the internal pressure of the airbag from becoming higher than a predetermined value after it is inflated to a predetermined shape, a vent hole for discharging gas from the airbag is provided.

【０００３】そして、このベントホールが、エアバッグ
が膨らみ始める当初から開口していては、圧力損失を招
き、所定形状に膨らむ膨張完了時までの時間がかかるこ
とから、実開平３−１６５５７号公報に記載されている
ように、エアバッグが膨らみ始める当初、ベントホール
をストラップによって閉塞するエアバッグが知られてい
る。If the vent hole is opened from the beginning of inflating the airbag, pressure loss is caused, and it takes time to complete the inflation to inflate into a predetermined shape. Therefore, Japanese Utility Model Laid-Open No. 3-16557. There is known an airbag in which a vent hole is closed by a strap when the airbag starts to inflate, as described in (1).

【０００４】上記公報のエアバッグは、エアバッグが折
り畳み状態にある際に、ストラップが配置される位置
に、ベントホールを形成したものである。The airbag disclosed in the above publication has a vent hole formed at a position where a strap is arranged when the airbag is in a folded state.

【０００５】ちなみに、このストラップは、エアバッグ
の膨張形状を規制するものであり、一端側を、エアバッ
グの内周面側における天井部に縫着させ、他端側をエア
バッグの内周面側におけるガス流入口の周縁に縫着させ
ていた。By the way, this strap regulates the inflating shape of the airbag. One end of the strap is sewn to the ceiling portion of the inner peripheral surface of the airbag, and the other end of the strap is the inner peripheral surface of the airbag. It was sewn to the periphery of the gas inlet on the side.

【０００６】なお、ガス流入口は、エアバッグ内に所定
のガスを供給して、エアバッグを膨らませるためのイン
フレーターを配置させる部位である。The gas inlet is a portion where an inflator for supplying a predetermined gas into the airbag to inflate the airbag is arranged.

【０００７】[0007]

【発明が解決しようとする課題】しかし、エアバッグ
は、インフレーターからのガスがエアバッグ内に供給さ
れる当初は、ストラップを伸ばすように、ガス流入口か
ら天井部が離れ、そして、ガス流入口と天井部との間の
腹部が膨らみ、膨張完了時に略球状の所定形状となるも
のである。However, in the airbag, when the gas from the inflator is supplied into the airbag, the ceiling part is separated from the gas inlet so that the strap is stretched, and the gas inlet is opened. The abdomen between the ceiling and the ceiling bulges, and becomes a substantially spherical predetermined shape when the inflation is completed.

【０００８】そのため、折り畳んだエアバッグが膨らむ
当初の極めて初期段階では、上記公報に記載のエアバッ
グは、ストラップがベントホールを塞いではいるもの
の、膨張完了前の腹部が膨らむ際には、ストラップがベ
ントホールから離れてしまい、ベントホールからガスが
逃げて、略球状の所定形状に膨らむ膨張完了時までに、
時間がかかることとなっていた。Therefore, in the very initial stage when the folded airbag is inflated, the strap in the airbag disclosed in the above publication blocks the vent hole, but when the abdomen is inflated before the inflation is completed, the strap is pulled up. By the time the expansion is completed, the gas escapes from the vent hole, the gas escapes from the vent hole, and it inflates into a substantially spherical predetermined shape.
It was supposed to take time.

【０００９】この発明は、上述の課題を解決するもので
あり、膨張完了までの圧力損失を低減させて、膨張完了
時までの時間を短縮でき、かつ、膨張完了後において、
エアバッグに荷重が加わった際には、内圧を低下させる
ために、速やかに、ベントホールを開口することができ
るエアバッグ装置のエアバッグを提供することを目的と
する。The present invention is intended to solve the above-mentioned problems, and it is possible to reduce the pressure loss until the completion of expansion, to shorten the time until the completion of expansion, and after the completion of expansion,
An object of the present invention is to provide an airbag device airbag capable of promptly opening a vent hole in order to reduce the internal pressure when a load is applied to the airbag.

【００１０】[0010]

【課題を解決するための手段】この発明に係るエアバッ
グは、膨張形状を規制する複数のストラップが、内周面
における天井部とガス流入口の周縁との離隔距離を規制
するように、配置され、ベントホールが、前記ガス流入
口の周縁に配置されているエアバッグ装置のエアバッグ
であって、前記ストラップが、一端側をエアバッグの内
周面側における前記天井部に固着させ、他端側を、前記
ベントホール近傍でエアバッグの内周面側から外周面側
に挿通させ、エアバッグの外周面側で、前記ベントホー
ルを塞ぐように延びて、前記ベントホール周縁に固着さ
せていることを特徴とする。In an airbag according to the present invention, a plurality of straps for restricting an inflated shape are arranged so as to restrict a separation distance between a ceiling portion on an inner peripheral surface and a peripheral edge of a gas inlet. The vent hole is an airbag of an airbag device arranged at the periphery of the gas inlet, and the strap has one end fixed to the ceiling portion on the inner peripheral surface side of the airbag, The end side is inserted from the inner peripheral surface side of the airbag to the outer peripheral surface side in the vicinity of the vent hole, and extends so as to close the vent hole on the outer peripheral surface side of the airbag, and is fixed to the vent hole peripheral edge. It is characterized by being

【００１１】[0011]

【発明の作用・効果】この発明に係るエアバッグでは、
ガスが供給されて膨らみ始める当初、ストラップを伸ば
すように、ガス流入口から天井部が離れても、一端側を
天井部に固着させたストラップが、他端側を、ベントホ
ール近傍でエアバッグの内周面側から外周面側に挿通さ
せ、エアバッグの外周面側で、ベントホールを塞ぐよう
に延びて、ベントホール周縁に固着させている。With the airbag according to the present invention,
Even when the ceiling is separated from the gas inlet so that the strap is stretched at the beginning when gas is supplied and inflates, the strap with one end fixed to the ceiling has the other end attached to the airbag near the vent hole. It is inserted from the inner peripheral surface side to the outer peripheral surface side, extends so as to close the vent hole on the outer peripheral surface side of the airbag, and is fixed to the peripheral edge of the vent hole.

【００１２】そのため、ストラップが伸びる態様は、ベ
ントホールを強固に塞ぐ態様となるため、ベントホール
を塞いだ状態で、エアバッグが膨張を完了させることと
なる。[0012] Therefore, the strap is extended so that the vent hole is firmly closed. Therefore, the inflation of the airbag is completed while the vent hole is closed.

【００１３】そして、エアバッグの膨張完了後におい
て、エアバッグに荷重が加わった際には、ストラップ
が、緩むこととなって、塞いでいたベントホールを開口
させることとなり、余剰のガスをベントホールから排出
して、エアバッグの内圧を低下させることができる。After the inflation of the airbag is completed, when a load is applied to the airbag, the strap is loosened, and the vent hole that has been closed is opened, so that excess gas is vented. The internal pressure of the airbag can be reduced by discharging the internal pressure of the airbag.

【００１４】したがって、この発明に係るエアバッグで
は、膨張完了までの圧力損失を低減させて、膨張完了時
までの時間を短縮でき、かつ、膨張完了後において、エ
アバッグに荷重が加わった際には、内圧を低下させるた
めに、速やかに、ベントホールを開口することができ
る。Therefore, in the airbag according to the present invention, the pressure loss until the completion of inflation can be reduced to shorten the time until the completion of inflation, and when a load is applied to the airbag after the completion of inflation. In order to reduce the internal pressure, the vent hole can be opened promptly.

【００１５】[0015]

【実施例】以下、この発明の一実施例を図面に基づいて
説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

【００１６】実施例のエアバッグ１は、図１・２に示す
ように、膨張完了時に略球形となる周壁２と、円形のガ
ス流入口５と、４つのベントホール６と、膨張形状を規
制するための４本のストラップ７と、を備えて構成され
ている。As shown in FIGS. 1 and 2, the airbag 1 of the embodiment regulates the peripheral wall 2 which becomes a substantially spherical shape when the inflation is completed, the circular gas inlet 5, the four vent holes 6, and the inflation shape. And four straps 7 for doing so.

【００１７】周壁２は、展開させた際の形状を共に略円
形とする上側基布２１と下側基布２２とを、相互の外周
縁を縫着して、構成されている。これらの上側・下側基
布２１・２２は、ナイロンやポリエステル等の織布を利
用して、エアバッグ１の内周面側に配置される面に、耐
熱性を有するゴムをコーティングして形成されている。The peripheral wall 2 is formed by sewing an upper peripheral cloth 21 and a lower basic cloth 22 which have a substantially circular shape when unfolded, and sew their outer peripheral edges together. The upper and lower base fabrics 21 and 22 are formed by using a woven fabric such as nylon or polyester and coating the heat-resistant rubber on the surface arranged on the inner peripheral surface side of the airbag 1. Has been done.

【００１８】そして、このエアバッグ１は、ガス流入口
５と対向する上側基布２１の中央部付近を、エアバッグ
１の膨張完了時の天井部３として、上側基布２１と下側
基布２２との外周縁付近を腹部４としている。In the airbag 1, the upper base cloth 21 and the lower base cloth are used as a ceiling portion 3 near the center of the upper base cloth 21 facing the gas inlet 5 when the airbag 1 is completely inflated. The vicinity of the outer peripheral edge with 22 is the abdomen 4.

【００１９】ガス流入口５は、エアバッグ１の内部にガ
スを供給するためのインフレーター１１のガス吐出口１
１ａ側を挿入させるものであり、下側基布２２の中央に
形成されている。なお、下側基布２２のガス流入口５の
周縁には、下側基布２２と同質材の円環状の補強布２３
が縫着されている。The gas inlet 5 is a gas outlet 1 of an inflator 11 for supplying gas into the airbag 1.
The side 1a is to be inserted and is formed in the center of the lower base cloth 22. In addition, on the periphery of the gas inlet 5 of the lower base cloth 22, an annular reinforcing cloth 23 made of the same material as the lower base cloth 22 is provided.
Is sewn on.

【００２０】各ベントホール６は、ガス流入口５を中心
として、ガス流入口５の周囲の下側基布２２に形成され
ている。Each vent hole 6 is formed in the lower base cloth 22 around the gas inlet 5 with the gas inlet 5 as the center.

【００２１】さらに、下側基布２２におけるガス流入口
５と各ベントホール６との間には、ストラップ７を挿通
させるための、スリット８が形成されている。Further, a slit 8 for inserting the strap 7 is formed between the gas inlet 5 and each vent hole 6 in the lower base cloth 22.

【００２２】そして、各ストラップ７が、一端側をエア
バッグ１の内周面側における天井部３に縫着させ、他端
側を、各スリット８を経てエアバッグ１の内周面側から
外周面側に挿通させ、エアバッグ１の外周面側で、ベン
トホール６を塞ぐように延びて、ベントホール６の周縁
に縫着させている。Each strap 7 has one end sewn to the ceiling portion 3 on the inner peripheral surface side of the airbag 1, and the other end passes through each slit 8 from the inner peripheral surface side of the airbag 1 to the outer periphery. The vent hole 6 is inserted into the surface side, extends so as to close the vent hole 6 on the outer peripheral surface side of the airbag 1, and is sewn to the peripheral edge of the vent hole 6.

【００２３】なお、実施例の場合、各ストラップ７は、
天井部３において、一体化されている。In the case of the embodiment, each strap 7 is
It is integrated in the ceiling part 3.

【００２４】実施例のエアバッグ１は、エアバッグ装置
Ｍを構成する場合、バッグホルダ１２に保持される態様
となる。その態様を簡単に述べると、エアバッグ１の内
周面側のガス流入口５の周縁に円環状のリテーナ１３が
配置され、リテーナ１３下面に固着された図示しない複
数のボルトを、エアバッグ１のガス流入口５周縁と、イ
ンフレーター１１のフランジ部１１ｂと、バッグホルダ
１２と、のそれぞれ図示しない取付孔を貫通させて、ナ
ット止めすることにより、バッグホルダ１２にエアバッ
グ１やインフレーター１１が取り付けられることとな
る。When the airbag device M is constructed, the airbag 1 of the embodiment is held by the bag holder 12. Briefly describing the mode, an annular retainer 13 is arranged at the periphery of the gas inlet 5 on the inner peripheral surface side of the airbag 1, and a plurality of bolts (not shown) fixed to the lower surface of the retainer 13 are attached to the airbag 1 The air bag 1 and the inflator 11 are attached to the bag holder 12 by passing through the mounting holes (not shown) of the gas inflow port 5 periphery, the flange portion 11b of the inflator 11, and the bag holder 12, respectively, and fixing them with nuts. Will be done.

【００２５】なお、バッグホルダ１２には、図示しない
蓋材が取り付けられ、この蓋材が折り畳まれたエアバッ
グ１の周囲を覆うこととなる。そして、その状態で、バ
ッグホルダ１２を利用してステアリングホイールや助手
席前方のインストルメントパネル等の部位に、エアバッ
グ装置Ｍが、配置されることとなる。A lid member (not shown) is attached to the bag holder 12, and the lid member covers the periphery of the folded airbag 1. Then, in this state, the airbag device M is arranged using the bag holder 12 at a portion such as the steering wheel or the instrument panel in front of the passenger seat.

【００２６】また、エアバッグ１の折り畳み作業につい
て述べると、既述の蓋材を取り付ける前において、適
宜、バッグホルダ１２への取り付けの前後に、エアバッ
グ１を折り畳むようにする。その作業順序は、まず、ガ
ス流入口５に天井部３を接近させるように、下側基布２
２に上側基布２１を重ねて、上方から見て略円形に展開
させた状態とする。そして、エアバッグ１の外周縁を中
央側に折り畳んで作業終了となる。この外周縁の折り畳
み方法の一例を示すと、エアバッグ１を上方から見て円
形状に展開した状態から、まず、図５に示すように、横
折りし、その後、図６に示すように縦折りすれば良い。Further, regarding the folding operation of the airbag 1, the airbag 1 is appropriately folded before and after attachment to the bag holder 12 before attaching the above-mentioned lid member. The work order is as follows. First, the lower base cloth 2 is moved so that the ceiling portion 3 approaches the gas inlet 5.
The upper base cloth 21 is superposed on 2 and is in a state of being developed into a substantially circular shape when viewed from above. Then, the outer peripheral edge of the airbag 1 is folded toward the center to complete the work. An example of a method of folding the outer peripheral edge is as follows. First, as shown in FIG. 5, the airbag 1 is first folded laterally from a state in which the airbag 1 is developed in a circular shape as viewed from above, and then, as shown in FIG. Just fold it.

【００２７】この実施例のエアバッグ１では、折り畳ま
れてエアバッグ装置Ｍとして車両の所定部位に配置され
た後、インフレーター１１のガス吐出口１１ａからガス
が供給されると、図示しない蓋材を破断して、急激に膨
らむ。In the airbag 1 of this embodiment, after being folded and placed as a airbag device M at a predetermined portion of the vehicle, when gas is supplied from the gas discharge port 11a of the inflator 11, a lid member (not shown) is opened. Breaks and swells rapidly.

【００２８】そして、ガスが供給されてエアバッグ１が
膨らみ始める当初には、図３に示すように、各ストラッ
プ７を伸ばすように、まず、ガス流入口５から天井部３
が離れる。At the beginning of inflating the airbag 1 when gas is supplied, as shown in FIG. 3, first, the straps 7 are stretched so that the straps 7 are first extended from the gas inlet 5 to the ceiling portion 3.
Leave.

【００２９】その際、一端側を天井部３に固着させた各
ストラップ７が、それぞれ、他端側を、各ベントホール
６近傍でエアバッグ１の内周面側から外周面側に挿通さ
せ、エアバッグ１の外周面側で、ベントホール６を塞ぐ
ように延びて、ベントホール６の周縁に固着させてい
る。At this time, the straps 7, one end of which is fixedly attached to the ceiling portion 3, have the other ends thereof inserted from the inner peripheral surface side to the outer peripheral surface side of the airbag 1 in the vicinity of the respective vent holes 6, On the outer peripheral surface side of the airbag 1, it extends so as to close the vent hole 6 and is fixed to the peripheral edge of the vent hole 6.

【００３０】そのため、各ストラップ７が伸びる態様
は、各ベントホール６を強固に塞ぐ態様となるため、各
ベントホール６を塞いだ状態で、図１に示すように、腹
部４を膨らませて、エアバッグ１が膨張を完了させるこ
ととなる。Therefore, each strap 7 extends so that each vent hole 6 is firmly closed. Therefore, with each vent hole 6 closed, the abdomen 4 is inflated as shown in FIG. The bag 1 will complete the inflation.

【００３１】そして、エアバッグ１の膨張完了後におい
て、エアバッグ１に荷重が加わった際には、図４に示す
ように、各ストラップ７が、緩むこととなって、塞いで
いたベントホール６を開口させることとなり、余剰のガ
スをベントホール６から排出して、エアバッグ１の内圧
を低下させることができる。After the inflation of the airbag 1 is completed, when a load is applied to the airbag 1, as shown in FIG. 4, the straps 7 are loosened, and the vent holes 6 that have been closed are closed. Thus, the surplus gas can be discharged from the vent hole 6 and the internal pressure of the airbag 1 can be reduced.

【００３２】したがって、実施例のエアバッグ１では、
膨張完了までの圧力損失を低減させて、膨張完了時まで
の時間を短縮でき、かつ、膨張完了後において、エアバ
ッグ１に荷重が加わった際には、内圧を低下させるため
に、速やかに、ベントホール６を開口することができ
る。Therefore, in the airbag 1 of the embodiment,
By reducing the pressure loss until the completion of inflation, the time until the completion of inflation can be shortened, and when a load is applied to the airbag 1 after the completion of inflation, in order to lower the internal pressure, promptly, The vent hole 6 can be opened.

【００３３】なお、実施例のエアバッグ１には、各ベン
トホール６の近傍に各ストラップ７を挿通させるスリッ
ト８が形成されており、これらのスリット８から若干の
ガスが排出される虞れがあるが、従来のベントホールよ
り開口面積が小さいため、本願発明の効果を減ずるもの
では無い。The airbag 1 of the embodiment is formed with slits 8 through which the straps 7 are inserted in the vicinity of the vent holes 6, and there is a risk that some gas will be discharged from these slits 8. However, since the opening area is smaller than that of the conventional vent hole, the effect of the present invention is not reduced.

【００３４】また、実施例のエアバッグ１では、ベント
ホール６を塞ぐ態様として、ストラップ７が、ベントホ
ール６のガス流入口５側で、エアバッグ１の内周面から
スリット８を経て外周面へ出て、ベントホール６を塞ぐ
ものを示したが、勿論、ストラップ７が伸びようとする
際に、ベントホール６を塞ぐことができれば良いため、
図７に示すように構成しても良い。Further, in the airbag 1 of the embodiment, as a mode of closing the vent hole 6, the strap 7 is provided on the gas inlet 5 side of the vent hole 6 from the inner peripheral surface of the airbag 1 through the slit 8 to the outer peripheral surface thereof. Although it is shown that the vent hole 6 is closed out, it is of course sufficient that the vent hole 6 can be closed when the strap 7 is about to extend.
It may be configured as shown in FIG.

【００３５】このエアバッグ３１は、ストラップ７を通
すスリット３８が、ベントホール３と下側基布２２の外
周縁との間に配設され、ストラップ７が、下側基布２２
の外周縁側で、エアバッグ３１の内周面からスリット３
８を経て外周面へ出て、ベントホール６を塞ぐように、
ガス流入口５側で縫着されたものである。In the airbag 31, a slit 38 for passing the strap 7 is provided between the vent hole 3 and the outer peripheral edge of the lower base cloth 22, and the strap 7 is attached to the lower base cloth 22.
Slit 3 from the inner peripheral surface of the airbag 31 on the outer peripheral side of the
Go out to the outer peripheral surface through 8 and block the vent hole 6,
It is sewn on the gas inlet 5 side.

【００３６】このエアバッグ３１においても、ストラッ
プ７が伸びる際にベントホール６を塞ぐことができるた
め、膨張完了までの圧力損失を低減させて、膨張完了時
までの時間を短縮できる。また、膨張完了後において
は、エアバッグ３１に荷重が加わった際、図８に示すよ
うに、ストラップ７が緩むため、速やかに、ベントホー
ル６を開口することができる。Also in this airbag 31, since the vent hole 6 can be closed when the strap 7 extends, the pressure loss until the completion of the inflation can be reduced and the time until the completion of the inflation can be shortened. Further, after the inflation is completed, when the load is applied to the airbag 31, the strap 7 is loosened as shown in FIG. 8, so that the vent hole 6 can be opened promptly.

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

【図１】この発明の一実施例を示すエアバッグが膨らん
だ状態を示す断面図である。FIG. 1 is a cross-sectional view showing a state where an airbag according to an embodiment of the present invention is inflated.

【図２】同実施例のエアバッグが膨らんだ状態を、背面
側から見た状態を示す図である。FIG. 2 is a diagram showing a state in which the airbag of the embodiment is inflated, viewed from the back side.

【図３】同実施例のエアバッグが膨らみ始めた当初の状
態を示す断面図である。FIG. 3 is a cross-sectional view showing an initial state in which the airbag of the embodiment starts to inflate.

【図４】同実施例のエアバッグの膨張完了後に、荷重が
加わった際の状態を示す断面図である。FIG. 4 is a cross-sectional view showing a state when a load is applied after the inflation of the airbag of the embodiment is completed.

【図５】同実施例のエアバッグの折り畳み作業を説明す
る図である。FIG. 5 is a diagram illustrating a folding operation of the airbag of the embodiment.

【図６】同実施例のエアバッグの折り畳み作業を説明す
る図であり、図５の後の作業を示す図である。FIG. 6 is a diagram for explaining the folding work of the airbag of the embodiment, which is a diagram showing the work after FIG. 5;

【図７】他の実施例のエアバッグが膨らんだ状態を示す
断面図である。FIG. 7 is a cross-sectional view showing a state where an airbag of another embodiment is inflated.

【図８】同実施例のエアバッグの膨張完了後に、荷重が
加わった際の状態を示す断面図である。FIG. 8 is a cross-sectional view showing a state in which a load is applied after the completion of inflation of the airbag of the embodiment.

【符号の説明】[Explanation of symbols]

１・３１…エアバッグ、 ３…天井部、 ５…ガス流入口、 ６…ベントホール、 ７…ストラップ、 Ｍ…エアバッグ装置。 1, 31 ... Airbag, 3 ... Ceiling part, 5 ... Gas inlet, 6 ... Vent hole, 7 ... Strap, M ... Airbag device.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 栗山 雄治 愛知県西春日井郡春日町大字落合字長畑１ 番地 豊田合成株式会社内 (72)発明者 安井 慎一 愛知県豊田市トヨタ町１番地 トヨタ自動 車株式会社内 (72)発明者 東浦 賢 愛知県豊田市トヨタ町１番地 トヨタ自動 車株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Kuriyama 1 Ochiai, Nagachibata, Kasuga-cho, Nishikasugai-gun, Aichi Prefecture, Toyoda Gosei Co., Ltd. (72) Inventor Shinichi Yasui, Toyota City, Aichi Prefecture 1 In-house (72) Inventor Ken Higashiura 1 Toyota-cho, Toyota-shi, Aichi Toyota Motor Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 膨張形状を規制する複数のストラップ
が、内周面における天井部とガス流入口の周縁との離隔
距離を規制するように、配置され、 ベントホールが、前記ガス流入口の周縁に配置されてい
るエアバッグ装置のエアバッグであって、 前記ストラップが、一端側をエアバッグの内周面側にお
ける前記天井部に固着させ、他端側を、前記ベントホー
ル近傍でエアバッグの内周面側から外周面側に挿通さ
せ、エアバッグの外周面側で、前記ベントホールを塞ぐ
ように延びて、前記ベントホール周縁に固着させている
ことを特徴とするエアバッグ装置のエアバッグ。1. A plurality of straps for restricting an expansion shape are arranged so as to restrict a separation distance between a ceiling portion on an inner peripheral surface and a peripheral edge of a gas inlet, and a vent hole has a peripheral edge of the gas inlet. In the airbag of the airbag device, the strap has one end fixed to the ceiling portion on the inner peripheral surface side of the airbag and the other end of the airbag near the vent hole. An airbag of an airbag device, which is inserted from an inner peripheral surface side to an outer peripheral surface side, extends so as to close the vent hole on the outer peripheral surface side of the airbag, and is fixed to a peripheral edge of the vent hole. .
JP4279030A 1992-10-16 1992-10-16 Air bag for air bag device Withdrawn JPH06127330A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4279030A JPH06127330A (en) 1992-10-16 1992-10-16 Air bag for air bag device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4279030A JPH06127330A (en) 1992-10-16 1992-10-16 Air bag for air bag device

Publications (1)

Publication Number Publication Date
JPH06127330A true JPH06127330A (en) 1994-05-10

Family

ID=17605418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4279030A Withdrawn JPH06127330A (en) 1992-10-16 1992-10-16 Air bag for air bag device

Country Status (1)

Country Link
JP (1) JPH06127330A (en)

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Effective date: 20000104