JP3755340B2 - Protective bag and protective device for automobile occupant head - Google Patents

Protective bag and protective device for automobile occupant head Download PDF

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Publication number
JP3755340B2
JP3755340B2 JP14843499A JP14843499A JP3755340B2 JP 3755340 B2 JP3755340 B2 JP 3755340B2 JP 14843499 A JP14843499 A JP 14843499A JP 14843499 A JP14843499 A JP 14843499A JP 3755340 B2 JP3755340 B2 JP 3755340B2
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Prior art keywords
bag
gas
chamber
check valve
head
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Expired - Fee Related
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JP14843499A
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JP2000335355A (en
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健 佐藤
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Takata Corp
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Takata Corp
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Priority to JP14843499A priority Critical patent/JP3755340B2/en
Priority to DE10021576A priority patent/DE10021576A1/en
Priority to DE20007937U priority patent/DE20007937U1/en
Priority to GB0012503A priority patent/GB2350332B/en
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    • 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
    • B60R21/232—Curtain-type airbags deploying mainly in a vertical direction from their top edge
    • 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
    • B60R2021/23316—Inner seams, e.g. creating separate compartments or used as tethering 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

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

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車乗員頭部の保護バッグに係り、詳しくは自動車の側面衝突時や横転時等にサイドドアの窓等に沿って膨張するバッグに関する。また、本発明は、この保護バッグを用いた自動車乗員頭部の保護装置に関する。
【０００２】
【従来の技術】
自動車乗員頭部の保護バッグはＷＯ９６／２６０８７に記載されている。この公知のバッグにあっては、空室はバッグの上縁に沿ってバッグの車両前方側の端部（前端部）から車両後方側の端部（後端部）まで延在するダクト部と、該ダクト部に連なり下方に向って延びる多数のセル部とからなる。
【０００３】
【発明が解決しようとする課題】
本発明は、バッグが膨張した後、この膨張状態が長時間にわたって継続される自動車乗員頭部の保護バッグを提供することを目的とする。
【０００４】
また、本発明は、膨張したバッグに乗員の身体が当っても該バッグの凹陥変形が少ないバッグと、このバッグを用いた自動車乗員頭部の保護装置を提供することを目的とする。
【０００５】
【課題を解決するための手段】
本発明（請求項１）の自動車乗員頭部の保護バッグは、自動車の室内の天井部と側面部との交叉隅部付近に配置され、導入されるガスによって該側面部に沿って下方に膨張する自動車乗員頭部の保護バッグにおいて、該バッグ内に複数の小室が設けられると共に、少なくとも１つの小室に、該小室からのガスの逆流を阻止する逆止弁が設けられている自動車乗員頭部の保護バッグにおいて、該保護バッグの内部に、膨張したバッグの上部に沿って延在するガス導入室と、上部が該導入室に連通した複数の前記小室とが設けられており、該小室からガス導入室へのガスの逆流を阻止するように前記逆止弁が設けられており、該逆止弁は、布が重ね合わされ、両側縁同士が連なっているものであり、ガスは該逆止弁の上部から下方へ通り抜けることを特徴とするものである。
【０００６】
本発明（請求項２）の保護バッグは、自動車の室内の天井部と側面部との交叉隅部付近に配置され、導入されるガスによって該側面部に沿って下方に膨張する自動車乗員頭部の保護バッグにおいて、該バッグ内に複数の小室が設けられると共に、少なくとも１つの小室に、該小室からのガスの逆流を阻止する逆止弁が設けられている自動車乗員頭部の保護バッグにおいて、該保護バッグの内部に、バッグの前部又は後部に配置されているガス導入室と、該ガス導入室に連通し、バッグの前後方向に延在する複数の小室とが設けられており、該小室から該ガス導入室へのガスの逆流を阻止するように前記逆止弁が設けられており、該逆止弁は、布が重ね合わされ、上下両側縁同士が連なっているものであり、ガスは該逆止弁の前又は後側から後又は前側へ通り抜けることを特徴とするものである。
【０００７】
かかる自動車乗員頭部の保護バッグにあっては、バッグの小室が膨張した後は、該小室からのガスの逆流が阻止されるため、バッグが長時間膨張状態を継続する。
【０００８】
膨張したバッグに対し乗員の頭部や肩部が当った場合、小室からガスが流入方向とは逆方向に流出しようとするが、逆流防止手段によりこのガスの流出が阻止されるため、頭部が当った小室だけが凹陥変形する。この小室の体積はバッグ全体の体積に比べ著しく小さいので、小室の体積の減少に反比例して小室の内圧が高くなり、バッグの凹陥変形量が小さいものとなる。
【０００９】
本発明では、該バッグは、２枚のシートが重ね合わされ、両シートが外縁に沿って結合されることにより該シートの間に小室が配置されていることが好ましい。
【００１０】
本発明の自動車乗員頭部の保護装置は、かかる保護バッグを備えたものである。
【００１１】
本発明の自動車乗員頭部の保護装置は、該保護バッグ内へガスを供給するガス発生器と、該保護バッグを覆っており、保護バッグが膨張するときに車両室内に向って開く手段とを備えていることが好ましい。
【００１２】
【発明の実施の形態】
本発明の好ましい実施の形態について次に図面を参照して説明する。図１は実施の形態に係るバッグの正面図、図２は該バッグの一部の斜視図、図３は図２のIII−III線に沿う断面図、図４は図２のIV−IV線に沿う断面図、図５は図２のＶ−Ｖ線に沿う断面図、図６はこのバッグの分解斜視図、図７はこのバッグの一部の拡大図、図８は逆止弁の正面図である。図１０，１１はこの保護バッグを備えた保護装置の断面図である。
【００１３】
このバッグ１は、乗員側シート２と車体側シート３との２枚のシートを重ね合わせ、これらシート２，３の周縁部を縫糸４によって縫合することにより、両シート２，３の間に空室を形成したものである。なお、縫糸４による縫合の代わりに接着、溶着等の結合手段を採用してもよい。
【００１４】
バッグ１の前部から、このバッグ１を自動車のＡピラー等に設置されたインフレータ１０に接続する接続部５が延設されている。この接続部５はＡピラーに沿って延在しており、その前端にはガス導入口６が設けられている。このインフレータ１０は、自動車が衝突したり横転した場合にガスを発生する。
【００１５】
バッグ１内の空室はバッグ１の上辺に沿って延在する導入室７と、該導入室７の下側に並列配置された複数の小室８とからなる。
【００１６】
この小室８を形成するためにシート２，３同士は縦方向線状結合部１２によって結合されている。この結合は、縫合、接着、溶着などのいずれでも良い。
【００１７】
この小室８は、両側部と下部とが封じられ、上部は逆止弁１３を介して導入室７に連通している。この逆止弁１３は図８（ａ）の通り２枚の長方形の布片１４，１４同士を重ね合わせ、その両側縁同士を縫合等により結合したものである。図７の通り、導入室７と小室８とを区画するために横方向線状結合部１５によってシート２，３同士が縫合されている。この横方向線状結合部１５の一部は逆止弁１３に食い込んでいる。
【００１８】
このバッグ１は、接続部５が自動車のＡピラーに沿って設置され、導入室７及び小室８よりなる本体部が自動車の天井部と側面部との交叉隅部付近に沿って設置される。
【００１９】
本発明の一態様にあっては、図１０に示すように、この本体部は折り畳まれてケース２０内に収容される。このケース２０は、例えば、自動車のルーフサイドメンバに沿って延在する長い箱状体よりなる。このケース２０は、その車両室内に臨む面の少なくとも一部２１が車両室内に向って開放可能となっている。バッグ１内にインフレータ１０からガスが供給されると、膨張しようとするバッグ１に押されることによりこの一部２１が開き、バッグ１が車両室内に膨張する。
【００２０】
本発明の別の一態様にあっては、図１１のように、バッグ１は細長く折り畳まれてルーフサイドメンバ２２に沿って配置される。バッグ１の上辺部分がルーフサイドメンバ２２にボルトやリベット等の留付具２３によって留め付けられる。このバッグ１は自動車の内装材２４によって覆われる。バッグ１内にインフレータ１０からガスが供給されると、膨張しようとするバッグ１に押されて内装材２４が開裂し、バッグ１が車両室内に膨張する。
【００２１】
インフレータ１０がガスを発生した場合、ガス導入口６から接続部５を介して導入室７にガスが流入する。このガスは、導入室７から図３（ａ）の通り逆止弁１３を通って各小室８内に流入し、各小室８を膨張させる。バッグ１の膨張に伴い、バッグ１を覆っていたケースや内装材などのバッグカバー部材が断裂し、各小室８を含むバッグ本体部が車両ウインドウ又はドアに沿って速やかに膨張する。
【００２２】
各小室８内に入り込んだガスは、図３（ｂ）の如く逆止弁１３によって導入室７への逆流が阻止されるので、各小室８は長時間にわたり膨張状態を継続する。この膨張したバッグ１の小室８に乗員の頭Ｈや肩等が当った場合、小室８は凹陥変形するが、図３（ｂ）の通り小室８内からのガスの流出が逆止弁１３によって阻止されているので、小室８の凹陥変形（体積減少）に逆比例して小室８内の圧力が高くなる。従って、小室８に乗員が当っても小室８の凹陥は極く浅いものとなる。
【００２３】
上記実施の形態では逆止弁１３を構成する布片１４は長方形状であるが、図８（ｂ）の通り下側が拡幅する形状の布片１４ａを用いた逆止弁１３ａを用いても良い。
【００２４】
図９は本発明の別の実施の形態に係る自動車乗員頭部の保護バッグ３１の正面図である。このバッグ３１も、乗員側シートと車体側シートとの２枚のシートを重ね合わせ、これらシートの周縁部を縫糸３４によって縫合することにより、両シートの間に空室を形成したものである。なお、縫糸３４による縫合の代わりに接着、溶着等の結合手段を採用してもよい。
【００２５】
バッグ３１の前部から、このバッグ３１を自動車のＡピラー等に設置されたインフレータ１０に接続する接続部３５が延設されている。この接続部３５はＡピラーに沿って延在しており、その前端にはガス導入口３６が設けられている。
【００２６】
バッグ３１内の空室はバッグ３１の前部に位置する導入室３７と、該導入室３７に連なり、バッグ３１の長手方向（前後方向）に並列配置された複数の小室３８とからなる。
【００２７】
この小室３８を形成するために乗員側シート及び車体側シート同士は横方向線状結合部４２によって結合されている。この結合は、縫合、接着、溶着などのいずれでも良い。
【００２８】
この小室３８は、上下両辺部と後部とが封じられ、前部は逆止弁１３を介して導入室３７に連通している。この逆止弁１３は図８（ａ）、（ｂ）のものである。導入室３７と小室３８とを区画するために縦方向線状結合部４５によって乗員側シート及び車体側シート同士が縫合されている。この縦方向線状結合部４５の一部は逆止弁１３に食い込んでいる。
【００２９】
このバッグ３１も、接続部３５が自動車のＡピラーに沿って設置され、導入室３７及び小室３８よりなる本体部が自動車の天井部と側面部との交叉隅部付近に沿って設置される。
【００３０】
インフレータ１０がガスを発生した場合、ガス導入口３６から接続部３５を介して導入室３７にガスが流入する。このガスは、導入室３７から逆止弁１３を通って各小室３８内に流入し、各小室３８を膨張させる。バッグ３１の膨張に伴い、バッグ３１を覆っていたケースや内装材などのバッグカバー部材が断裂し、各小室３８を含むバッグ本体部が車両ウインドウ又はドアに沿って速やかに膨張する。
【００３１】
各小室３８内に入り込んだガスは、逆止弁１３によって導入室３７への逆流が阻止されるので、各小室３８は長時間にわたり膨張状態を継続する。この膨張したバッグ３１の小室３８に乗員の頭や肩等が当った場合、小室３８は凹陥変形するが、小室３８内からのガスの流出が逆止弁１３によって阻止されているので、小室３８の凹陥変形（体積減少）に逆比例して小室３８内の圧力が高くなる。従って、小室３８に乗員が当っても小室３８の凹陥は極く浅いものとなる。
【００３２】
なお、バッグ３１の上辺からは耳部５０が所定間隔をおいて複数突設されている。この耳部５０には小孔５１が設けられている。この小孔５１にボルト又はリベット等の留付具を通し、この留付具をルーフサイドレール等に留めることにより、バッグ３１が車体に連結される。
【００３３】
この実施の形態にあっては導入室７，３７がバッグ３１の前部に配置されているが、バッグ３１の後部に配置されてもよい。
【００３４】
【発明の効果】
以上の通り、本発明の自動車乗員頭部の保護バッグ及び保護装置は、インフレータからガスが導入されると、長時間にわたって該保護バッグが膨張状態を維持する。また、膨張したバッグに乗員の頭や肩が当ったときのバッグの凹陥変形量が小さい。
【図面の簡単な説明】
【図１】 実施の形態に係るバッグの正面図である。
【図２】 該バッグの一部の斜視図である。
【図３】 図２のIII−III線に沿う断面図である。
【図４】 図２のIV−IV線に沿う断面図である。
【図５】 図２のＶ−Ｖ線に沿う断面図である。
【図６】 図１のバッグの分解斜視図である。
【図７】 図１のバッグの一部の拡大図である。
【図８】 逆止弁の正面図である。
【図９】 別の実施の形態に係る自動車乗員頭部の保護バッグの正面図である。
【図１０】 本発明の保護バッグを備えた保護装置の断面図である。
【図１１】 本発明の保護バッグを備えた保護装置の断面図である。
【符号の説明】
１，３１ バッグ
２，３ シート
７，３７ ガス導入室
８，３８ 小室
１０ インフレータ
１３，１３ａ 逆止弁[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a protective bag for an automobile occupant's head, and more particularly to a bag that expands along a side door window or the like at the time of a side collision or rollover of an automobile. The present invention also relates to an automobile occupant head protection device using this protective bag.
[0002]
[Prior art]
A protective bag for the head of an automobile occupant is described in WO 96/26087. In this known bag, the vacant chamber extends along the upper edge of the bag from the vehicle front side end portion (front end portion) to the vehicle rear side end portion (rear end portion). , And a plurality of cell portions that are continuous with the duct portion and extend downward.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide a protective bag for an automobile occupant head in which the inflated state is continued for a long time after the bag is inflated.
[0004]
It is another object of the present invention to provide a bag that is less likely to be deformed when the occupant's body hits the inflated bag, and an automobile occupant head protection device using the bag.
[0005]
[Means for Solving the Problems]
The protective bag for the head of an automobile occupant of the present invention (Claim 1) is disposed near the intersection corner between the ceiling and the side surface of the interior of the vehicle, and is inflated downward along the side surface by the introduced gas. in the protection bags of a motor vehicle occupant's head to, a plurality of small chambers in the bag are provided, at least one of the chambers, automotive occupant head check valve for preventing backflow of gas from the small chamber that provided The protective bag is provided with a gas introduction chamber extending along an upper portion of the inflated bag and a plurality of the small chambers whose upper portions communicate with the introduction chamber. The check valve is provided so as to prevent the backflow of gas from the gas into the gas introduction chamber. The check valve is formed by overlapping cloths and connecting both side edges. this passing through from the top of the check valve downward The one in which the features.
[0006]
The protective bag of the present invention (Claim 2) is disposed in the vicinity of a crossing corner between a ceiling portion and a side surface portion in a vehicle interior, and is inflated downward along the side surface portion by an introduced gas. In the protective bag, a plurality of small chambers are provided in the bag, and at least one of the small chambers is provided with a check valve for preventing a backflow of gas from the small chambers. Inside the protective bag, there are provided a gas introduction chamber disposed at the front or rear of the bag, and a plurality of small chambers communicating with the gas introduction chamber and extending in the front-rear direction of the bag, The check valve is provided so as to prevent the backflow of gas from the small chamber to the gas introduction chamber, and the check valve is formed by overlapping cloths and connecting both upper and lower edges. Is before or after the check valve It is characterized in that the pass through to the front side.
[0007]
In such a protective bag for an automobile occupant's head, after the small chamber of the bag is inflated, the backflow of gas from the small chamber is prevented, so that the bag continues to be inflated for a long time.
[0008]
When an occupant's head or shoulder hits an inflated bag, the gas tries to flow out of the small chamber in the direction opposite to the inflow direction, but the outflow of this gas is prevented by the backflow prevention means. Only the chamber that hit is deformed. Since the volume of the small chamber is remarkably small compared with the volume of the entire bag, the internal pressure of the small chamber increases in inverse proportion to the decrease in the volume of the small chamber, and the amount of deformation of the bag is small .
[0009]
In the present invention, it is preferable that the bag has a small chamber disposed between the two sheets by overlapping two sheets and joining the two sheets along the outer edge .
[0010]
The car occupant head protection device of the present invention includes such a protection bag.
[0011]
An automobile occupant head protection device according to the present invention includes a gas generator that supplies gas into the protective bag, and a means that covers the protective bag and opens toward the vehicle compartment when the protective bag is inflated. It is preferable to provide.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will be described below with reference to the drawings. 1 is a front view of a bag according to an embodiment, FIG. 2 is a perspective view of a part of the bag, FIG. 3 is a sectional view taken along line III-III in FIG. 2, and FIG. 4 is a line IV-IV in FIG. FIG. 5 is a sectional view taken along the line VV in FIG. 2, FIG. 6 is an exploded perspective view of the bag, FIG. 7 is an enlarged view of a part of the bag, and FIG. 8 is a front view of the check valve. FIG. 10 and 11 are cross-sectional views of a protective device provided with this protective bag.
[0013]
The bag 1 has two occupant-side seats 2 and a vehicle body-side seat 3 that are overlapped, and the peripheral portions of these seats 2 and 3 are stitched with sewing threads 4 so that there is no space between the two seats 2 and 3. A chamber is formed. Note that instead of stitching with the sewing thread 4, a bonding means such as adhesion or welding may be employed.
[0014]
A connecting portion 5 is connected from the front portion of the bag 1 to connect the bag 1 to an inflator 10 installed in an A-pillar of an automobile. The connecting portion 5 extends along the A pillar, and a gas inlet 6 is provided at the front end thereof. The inflator 10 generates gas when an automobile collides or rolls over.
[0015]
The vacant chamber in the bag 1 includes an introduction chamber 7 extending along the upper side of the bag 1 and a plurality of small chambers 8 arranged in parallel below the introduction chamber 7.
[0016]
In order to form this small chamber 8, the sheets 2 and 3 are joined together by a longitudinal linear joining portion 12. This bonding may be any of stitching, adhesion, welding and the like.
[0017]
The small chamber 8 is sealed at both sides and the lower portion, and the upper portion communicates with the introduction chamber 7 via a check valve 13. As shown in FIG. 8A, the check valve 13 is formed by superposing two rectangular cloth pieces 14 and 14 and joining both side edges thereof by sewing or the like. As shown in FIG. 7, the sheets 2 and 3 are stitched together by a lateral linear connecting portion 15 to partition the introduction chamber 7 and the small chamber 8. A part of the lateral linear coupling portion 15 bites into the check valve 13.
[0018]
In this bag 1, the connecting portion 5 is installed along the A-pillar of the automobile, and the main body portion including the introduction chamber 7 and the small chamber 8 is installed along the vicinity of the intersection corner between the ceiling portion and the side portion of the automobile.
[0019]
In one embodiment of the present invention, as shown in FIG. 10 , the main body is folded and accommodated in the case 20. The case 20 is made of a long box-like body extending along the roof side member of the automobile, for example. In this case 20, at least a part 21 of the surface facing the vehicle compartment can be opened toward the vehicle compartment. When gas is supplied into the bag 1 from the inflator 10, the portion 21 is opened by being pushed by the bag 1 to be inflated, and the bag 1 is inflated into the vehicle compartment.
[0020]
In another aspect of the present invention, as shown in FIG. 11 , the bag 1 is folded into an elongated shape and disposed along the roof side member 22. The upper side portion of the bag 1 is fastened to the roof side member 22 by fastening tools 23 such as bolts and rivets. The bag 1 is covered with an automobile interior material 24. When gas is supplied from the inflator 10 into the bag 1, the bag 1 is pushed by the bag 1 to be inflated, the interior material 24 is cleaved, and the bag 1 is expanded into the vehicle compartment.
[0021]
When the inflator 10 generates gas, the gas flows from the gas introduction port 6 into the introduction chamber 7 through the connection portion 5. This gas flows from the introduction chamber 7 into each small chamber 8 through the check valve 13 as shown in FIG. 3A, and expands each small chamber 8. As the bag 1 is inflated, a bag cover member such as a case or an interior material covering the bag 1 is torn, and the bag body including each small chamber 8 is rapidly inflated along the vehicle window or door.
[0022]
Since the gas that has entered the small chambers 8 is prevented from flowing back into the introduction chamber 7 by the check valve 13 as shown in FIG. 3B, each small chamber 8 continues to be inflated for a long time. When the passenger's head H or shoulder hits the small chamber 8 of the inflated bag 1, the small chamber 8 is recessed and deformed, but the gas outflow from the small chamber 8 is caused by the check valve 13 as shown in FIG. Since it is blocked, the pressure in the small chamber 8 increases in inverse proportion to the concave deformation (volume reduction) of the small chamber 8. Therefore, even if an occupant hits the small chamber 8, the concave portion of the small chamber 8 is extremely shallow.
[0023]
In the above embodiment, the cloth piece 14 constituting the check valve 13 is rectangular, but a check valve 13a using a cloth piece 14a having a shape in which the lower side is widened as shown in FIG. 8B may be used. .
[0024]
FIG. 9 is a front view of a protective bag 31 for an automobile occupant head according to another embodiment of the present invention. This bag 31 also has a vacant space formed between two sheets by superimposing two sheets, a passenger side sheet and a vehicle body side sheet, and sewing the peripheral edge of these sheets with a sewing thread 34. Note that a connecting means such as adhesion or welding may be employed instead of the sewing with the sewing thread 34.
[0025]
A connecting portion 35 is connected from the front portion of the bag 31 to connect the bag 31 to the inflator 10 installed in an A-pillar of an automobile. The connecting portion 35 extends along the A pillar, and a gas introduction port 36 is provided at the front end thereof.
[0026]
The vacant chamber in the bag 31 includes an introduction chamber 37 located at the front portion of the bag 31 and a plurality of small chambers 38 connected to the introduction chamber 37 and arranged in parallel in the longitudinal direction (front-rear direction) of the bag 31.
[0027]
In order to form the small chamber 38, the passenger side seat and the vehicle body side seat are joined together by a lateral linear joining portion 42. This bonding may be any of stitching, adhesion, welding and the like.
[0028]
The small chamber 38 is sealed at both the upper and lower sides and the rear portion, and the front portion communicates with the introduction chamber 37 via the check valve 13. This check valve 13 is the one shown in FIGS. In order to partition the introduction chamber 37 and the small chamber 38, the passenger side seat and the vehicle body side seat are stitched together by the longitudinal linear connecting portion 45. A part of the longitudinal linear coupling portion 45 bites into the check valve 13.
[0029]
In this bag 31, the connecting portion 35 is installed along the A-pillar of the automobile, and the main body portion including the introduction chamber 37 and the small chamber 38 is installed near the intersection corner between the ceiling portion and the side portion of the automobile.
[0030]
When the inflator 10 generates gas, the gas flows into the introduction chamber 37 from the gas introduction port 36 through the connection portion 35. This gas flows from the introduction chamber 37 through the check valve 13 into each small chamber 38 and expands each small chamber 38. As the bag 31 is inflated, a bag cover member such as a case or an interior material covering the bag 31 is torn, and the bag body including each small chamber 38 is rapidly inflated along the vehicle window or door.
[0031]
Since the gas that has entered the small chambers 38 is prevented from flowing back into the introduction chamber 37 by the check valve 13, the small chambers 38 continue to expand for a long time. When the passenger's head, shoulders, or the like hits the small chamber 38 of the inflated bag 31, the small chamber 38 is recessed and deformed, but gas flow out of the small chamber 38 is blocked by the check valve 13. The pressure in the small chamber 38 increases in inverse proportion to the concave deformation (volume reduction). Therefore, even if an occupant hits the small chamber 38, the concave portion of the small chamber 38 is extremely shallow.
[0032]
Note that a plurality of ears 50 project from the upper side of the bag 31 at a predetermined interval. The ear portion 50 is provided with a small hole 51. By passing a fastening tool such as a bolt or a rivet through the small hole 51 and fastening the fastening tool to a roof side rail or the like, the bag 31 is connected to the vehicle body.
[0033]
In this embodiment, the introduction chambers 7 and 37 are disposed at the front portion of the bag 31, but may be disposed at the rear portion of the bag 31.
[0034]
【The invention's effect】
As described above, when the gas is introduced from the inflator, the protective bag and the protective device for the vehicle occupant head according to the present invention maintain the inflated state for a long time. Further, when the occupant's head or shoulder hits the inflated bag, the concave deformation amount of the bag is small.
[Brief description of the drawings]
FIG. 1 is a front view of a bag according to an embodiment.
FIG. 2 is a perspective view of a part of the bag.
3 is a cross-sectional view taken along line III-III in FIG.
4 is a cross-sectional view taken along line IV-IV in FIG.
5 is a cross-sectional view taken along line VV in FIG.
6 is an exploded perspective view of the bag of FIG. 1. FIG.
7 is an enlarged view of a part of the bag of FIG. 1. FIG.
FIG. 8 is a front view of a check valve.
FIG. 9 is a front view of a protective bag for an automobile occupant's head according to another embodiment.
FIG. 10 is a cross-sectional view of a protective device provided with the protective bag of the present invention.
FIG. 11 is a cross-sectional view of a protective device provided with the protective bag of the present invention.
[Explanation of symbols]
1 , 3 1 Bag 2, 3 Seat 7, 37 Gas introduction chamber 8, 38 Small chamber 10 Inflator 13, 13 a Check valve

Claims (5)

自動車の室内の天井部と側面部との交叉隅部付近に配置され、導入されるガスによって該側面部に沿って下方に膨張する自動車乗員頭部の保護バッグにおいて、該バッグ内に複数の小室が設けられると共に、少なくとも１つの小室に、該小室からのガスの逆流を阻止する逆止弁が設けられている自動車乗員頭部の保護バッグにおいて、
該保護バッグの内部に、膨張したバッグの上部に沿って延在するガス導入室と、上部が該導入室に連通した複数の前記小室とが設けられており、該小室からガス導入室へのガスの逆流を阻止するように前記逆止弁が設けられており、
該逆止弁は、布が重ね合わされ、両側縁同士が連なっているものであり、ガスは該逆止弁の上部から下方へ通り抜けることを特徴とする自動車乗員頭部の保護バッグ。 In a protective bag for an automobile occupant's head, which is disposed near the intersection corner between a ceiling portion and a side portion in an automobile interior and expands downward along the side surface by the introduced gas, a plurality of small chambers are provided in the bag together is provided, in at least one chamber, the gas protection bag automobile passenger's head check valve that provided for preventing the backflow of from the small chamber,
Inside the protective bag, a gas introduction chamber extending along the upper portion of the inflated bag and a plurality of the small chambers whose upper portions communicate with the introduction chamber are provided, and from the small chamber to the gas introduction chamber The check valve is provided to prevent the backflow of gas,
The check valve is a protective bag for an automobile occupant's head, characterized in that cloth is overlapped and both side edges are connected to each other, and gas passes downward from the upper part of the check valve. 自動車の室内の天井部と側面部との交叉隅部付近に配置され、導入されるガスによって該側面部に沿って下方に膨張する自動車乗員頭部の保護バッグにおいて、該バッグ内に複数の小室が設けられると共に、少なくとも１つの小室に、該小室からのガスの逆流を阻止する逆止弁が設けられている自動車乗員頭部の保護バッグにおいて、
該保護バッグの内部に、バッグの前部又は後部に配置されているガス導入室と、該ガス導入室に連通し、バッグの前後方向に延在する複数の小室とが設けられており、該小室から該ガス導入室へのガスの逆流を阻止するように前記逆止弁が設けられており、
該逆止弁は、布が重ね合わされ、上下両側縁同士が連なっているものであり、ガスは該逆止弁の前又は後側から後又は前側へ通り抜けることを特徴とする自動車乗員頭部の保護バッグ。 In a protective bag for an automobile occupant's head, which is disposed near the intersection corner between a ceiling portion and a side portion in an automobile interior and expands downward along the side surface by the introduced gas, a plurality of small chambers are provided in the bag And a protective bag for the head of an automobile occupant in which at least one small chamber is provided with a check valve for preventing a backflow of gas from the small chamber.
Inside the protective bag, there are provided a gas introduction chamber disposed at the front or rear of the bag , and a plurality of small chambers communicating with the gas introduction chamber and extending in the front-rear direction of the bag, The check valve is provided so as to prevent the backflow of gas from the small chamber to the gas introduction chamber ;
The check valve has a cloth overlapped, and both upper and lower edges are continuous, and gas passes from the front or rear side to the rear or front side of the check valve . Protective bag. 請求項１又は２において、該バッグは、２枚のシートが重ね合わされ、両シートが外縁に沿って結合されることにより該シートの間に前記小室が配置されていることを特徴とする自動車乗員頭部の保護バッグ。 3. The vehicle occupant according to claim 1, wherein the bag is formed by superposing two sheets and joining the two sheets along an outer edge so that the small chamber is disposed between the sheets. Protective bag on the head. 自動車の室内の天井部と側面部との交叉隅部付近に配置され、導入されるガスによって該側面部に沿って下方に膨張する自動車乗員頭部の保護バッグを有する自動車乗員頭部の保護装置において、該保護バッグが請求項１ないし３のいずれか１項に記載のものであることを特徴とする自動車乗員頭部の保護装置。An automobile occupant head protection device having an automobile occupant head protection bag which is disposed near the intersection corner between a ceiling portion and a side surface of an automobile interior and expands downward along the side surface by the introduced gas. 4. A device for protecting a head of an automobile occupant, wherein the protective bag is the one according to any one of claims 1 to 3 . 請求項４において、該保護装置は、該保護バッグ内へガスを供給するガス発生器と、該保護バッグを覆っており、保護バッグが膨張するときに車両室内に向って開く手段とを備えていることを特徴とする自動車乗員頭部の保護装置。5. The protective device according to claim 4 , further comprising: a gas generator that supplies gas into the protective bag; and a means that covers the protective bag and opens into the vehicle compartment when the protective bag is inflated. An automobile occupant head protection device.
JP14843499A 1999-05-27 1999-05-27 Protective bag and protective device for automobile occupant head Expired - Fee Related JP3755340B2 (en)

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JP14843499A JP3755340B2 (en) 1999-05-27 1999-05-27 Protective bag and protective device for automobile occupant head
DE10021576A DE10021576A1 (en) 1999-05-27 2000-05-03 Protective cushion and protective device for the head area of a vehicle occupant
DE20007937U DE20007937U1 (en) 1999-05-27 2000-05-03 Protective cushion and protective device for the head area of a vehicle occupant
GB0012503A GB2350332B (en) 1999-05-27 2000-05-23 Protection bag and protection apparatus for head portion of automobile passenger

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