JP5217863B2 - Airbag device - Google Patents

Airbag device Download PDF

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JP5217863B2
JP5217863B2 JP2008257424A JP2008257424A JP5217863B2 JP 5217863 B2 JP5217863 B2 JP 5217863B2 JP 2008257424 A JP2008257424 A JP 2008257424A JP 2008257424 A JP2008257424 A JP 2008257424A JP 5217863 B2 JP5217863 B2 JP 5217863B2
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side airbag
airbag
pipe frame
vehicle
vertical column
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JP2010083433A (en
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敦 君和田
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Nissan Motor Co Ltd
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Description

本発明は、サイドエアバッグの展開方向を規制部材で規制するようにしたエアバッグ装置に関する。   The present invention relates to an airbag device in which a deployment direction of a side airbag is regulated by a regulating member.

側面衝突時の乗員保護対策としてはサイドエアバッグを用いたエアバッグ装置が知られている。サイドエアバッグは、側面衝突により展開してサイドドアの窓部開口部を覆うようになっている。このとき、窓部開口部が開放されている場合、展開したサイドエアバッグに乗員が干渉した際に、サイドエアバッグは支持を無くして外方に大きく突出してしまう。   As a occupant protection measure at the time of a side collision, an airbag device using a side airbag is known. The side airbag is deployed by side collision and covers the window opening of the side door. At this time, when the window opening is opened, when the occupant interferes with the deployed side airbag, the side airbag loses its support and protrudes greatly outward.

このため、従来では窓部開口部の開口面積を小さくするように、その開口部に下方から規制部材を突出させて、その規制部材によってサイドエアバッグの支持性を高めるようにしたものがある（例えば、特許文献１参照）。
特開平６−１１９８号公報（第３頁、図７） For this reason, conventionally, in order to reduce the opening area of the window opening, a restriction member is protruded from below into the opening, and the support of the side airbag is enhanced by the restriction member ( For example, see Patent Document 1).
Japanese Patent Laid-Open No. 6-1198 (page 3, FIG. 7)

しかしながら、かかる従来のエアバッグ装置では、規制部材を設けることによりサイドエアバッグの車外側面を規制して、そのサイドエアバッグの外方飛び出しを抑制できるのであるが、従来の規制部材は板状に形成して規制板として構成し、その規制板をドアの内方に上下スライド自在に収納してある。そして、サイドエアバッグの展開時に規制板を上昇させて、その規制板を窓部開口部の下部に突出させるようになっている。   However, in such a conventional airbag device, by providing a regulating member, the vehicle outer side surface of the side airbag can be regulated and the outward jumping of the side airbag can be suppressed, but the conventional regulating member has a plate shape. It is formed and configured as a restricting plate, and the restricting plate is housed inside the door so as to be slidable up and down. Then, when the side airbag is deployed, the restricting plate is raised so that the restricting plate protrudes below the window opening.

このように、従来の規制部材は板状に形成されるため重量が嵩み、ひいては、車体重量の増加を招くおそれがある。   As described above, since the conventional regulating member is formed in a plate shape, the weight is increased, which may increase the weight of the vehicle body.

また、規制部材とサイドエアバッグとは互いに独立した部材となっており、サイドエアバッグの展開時にも規制部材と分離した状態となるため、サイドエアバッグが展開した時の衝撃で規制部材との前後方向の接触位置にズレが発生し易く、規制部材によるサイドエアバッグの規制効果が不安定になってしまう。   In addition, since the regulating member and the side airbag are members independent from each other and are separated from the regulating member even when the side airbag is deployed, the regulation member and the side airbag are separated from the regulating member by an impact when the side airbag is deployed. Misalignment is likely to occur at the contact position in the front-rear direction, and the regulation effect of the side airbag by the regulation member becomes unstable.

そこで、本発明は、規制部材の軽量化を図りつつ、規制部材によってサイドエアバッグを安定的に規制できるエアバッグ装置を提供するものである。   Therefore, the present invention provides an airbag device that can stably regulate a side airbag by a regulating member while reducing the weight of the regulating member.

本発明は、車室内側壁部に設けられた開口部の下側部にサイドエアバッグを格納し、緊急時に前記開口部を覆うように車体上方に展開させると共に、前記開口部の下側部に、展開したサイドエアバッグの車外側面を拘束する複数の規制部材を設け、前記規制部材を、外側枠を構成する中空状のパイプフレームと、前記サイドエアバッグの車外側面を前記パイプフレームに連結する可撓性支持部材と、を備えて構成してある。また、前記パイプフレームは、少なくとも車両前後方向に離間して対向配置され、車両上下方向に延在する縦柱部を有し、前記可撓性支持部材は、両端部に前記パイプフレームの縦柱部に摺動自在に嵌合する嵌合部を設けるとともに、前記サイドエアバッグの車外側面に固定した前記サイドエアバッグの飛び出しを拘束できる剛性を有する可撓性の部材であり、前記複数の規制部材は、前記サイドエアバッグの展開時に前記パイプフレームの縦柱部に沿って上方に移動することを特徴とする。 The present invention stores a side airbag in a lower side portion of an opening portion provided in a side wall portion of a vehicle interior, and deploys the vehicle body above the vehicle body so as to cover the opening portion in an emergency. A plurality of restricting members for restraining the vehicle outer surface of the deployed side airbag, and connecting the restricting member to a hollow pipe frame constituting an outer frame and the vehicle outer surface of the side airbag to the pipe frame. And a flexible support member . In addition, the pipe frame has a vertical column portion that is spaced from and opposed to at least the vehicle front-rear direction and extends in the vehicle vertical direction, and the flexible support member has vertical columns of the pipe frame at both ends. A flexible member having a rigidity capable of restraining the protrusion of the side airbag fixed to the vehicle outer surface of the side airbag, and having a fitting portion that is slidably fitted to the portion. The member moves upward along the vertical column portion of the pipe frame when the side airbag is deployed .

本発明によれば、規制部材を、中空状のパイプフレームと、サイドエアバッグの車外側面をパイプフレームに連結する可撓性支持部材と、を備えて構成したので、規制部材は、主として中空状のパイプレームによって構成されるため、規制部材の軽量化を達成することができる。   According to the present invention, the restriction member is configured to include the hollow pipe frame and the flexible support member that connects the vehicle outer side surface of the side airbag to the pipe frame. Therefore, the weight of the regulating member can be reduced.

また、サイドエアバッグの車外側面を前記可撓性支持部材によってパイプフレームに連結したので、サイドエアバッグが展開される際にもそのサイドエアバッグと規制部材との相対位置がずれるのを抑制できるため、規制部材によってサイドエアバッグを安定的に規制できる。   In addition, since the outer side surface of the side airbag is connected to the pipe frame by the flexible support member, it is possible to prevent the relative position between the side airbag and the regulating member from shifting even when the side airbag is deployed. Therefore, the side airbag can be stably regulated by the regulating member.

以下、本発明の実施形態を図面と共に詳述する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図１、図２は本発明にかかるエアバッグ装置の一実施形態を示し、図１はサイドエアバッグの展開状態を車外側から見た要部斜視図、図２は図１中Ａ−Ａ線に沿った拡大断面図である。   1 and 2 show an embodiment of an airbag apparatus according to the present invention. FIG. 1 is a perspective view of a main part of a side airbag as viewed from the outside, and FIG. 2 is a line AA in FIG. It is an expanded sectional view in alignment with.

図１に示すように、本実施形態のエアバッグ装置１は、サイドエアバッグ２と、インフレータ３と、規制部材４と、を備える。サイドエアバッグ２は、一般に知られるように、車両側方に設けられた車体部材であるフロントドアまたはリヤドア等のサイドドアやボディサイドパネルの開口部となる窓部５の下側部に折り畳んで格納してある。この窓部５の上端は、開口された開放部５１に形成されている。そして、側面衝突や横転時の緊急時にサイドエアバッグ２が車体上方に展開して前記窓部を覆い、乗員の肩部や頭部の側方がドアガラスに直接に当たることを防止するようになっている。   As shown in FIG. 1, the airbag device 1 of the present embodiment includes a side airbag 2, an inflator 3, and a regulating member 4. As is generally known, the side airbag 2 is folded to the lower side of a window 5 serving as an opening of a side door such as a front door or a rear door, which is a vehicle body member provided on the side of the vehicle, or a body side panel. Stored. The upper end of the window part 5 is formed in the open part 51 opened. Then, in the event of a side collision or rollover, the side airbag 2 is deployed above the vehicle body to cover the window, and the side of the occupant's shoulder or head is prevented from directly hitting the door glass. ing.

サイドエアバッグ２は、図１に示した展開状態で車体上方が円弧状となるほぼ半円状に膨張するようになっており、その下端部にインフレータ３のガス供給パイプ３１を接続してある。ガス供給パイプ３１は、サイドエアバッグ２の下端部の後端から挿入して前端に突出させ、そのサイドエアバッグ２の下端部に沿って車両前後方向に貫通している。このとき、ガス供給パイプ３１は、前端３１ａを閉塞して、サイドエアバッグ２の内部に配置される部分に図外のガス噴出口を設けてある。   The side airbag 2 is inflated in a substantially semicircular shape in which the upper side of the vehicle body has an arc shape in the deployed state shown in FIG. 1, and a gas supply pipe 31 of the inflator 3 is connected to the lower end portion thereof. . The gas supply pipe 31 is inserted from the rear end of the lower end portion of the side airbag 2 and protrudes to the front end, and penetrates in the vehicle front-rear direction along the lower end portion of the side airbag 2. At this time, the gas supply pipe 31 closes the front end 31 a and is provided with a gas jet outlet (not shown) at a portion disposed inside the side airbag 2.

インフレータ３は、側面衝突や横転の検出信号を受けて作動してガスを発生するようになっており、そのインフレータ３で発生したガスをガス供給パイプ３１を介してサイドエアバッグ２に供給するようになっている。そして、サイドエアバッグ２にガスが供給されることにより、格納状態にあるサイドエアバッグ２を膨張させて車体上方に展開させるようになっている。尚、サイドエアバッグ２は車幅方向に所定厚さをもって図外のドアガラスに沿って扁平状に展開される。   The inflator 3 is operated in response to a side collision or rollover detection signal to generate gas, and the gas generated by the inflator 3 is supplied to the side airbag 2 via the gas supply pipe 31. It has become. And by supplying gas to the side airbag 2, the side airbag 2 in the retracted state is inflated and deployed above the vehicle body. The side airbag 2 is deployed in a flat shape along a door glass (not shown) with a predetermined thickness in the vehicle width direction.

インフレータ３は、図外のサイドドア内部に固定してあるとともに、上述のガス供給パイプ３１は、サイドエアバッグ２の下端部の前後端近傍を支持金具３２によってサイドドア内部に固定してある。   The inflator 3 is fixed inside a side door (not shown), and the gas supply pipe 31 described above is fixed inside the side door by a support fitting 32 in the vicinity of the front and rear ends of the lower end portion of the side airbag 2.

規制部材４は、窓部５の下部に位置してサイドエアバッグ２の車外側（図中手前側）に配置され、展開したサイドエアバッグ２の車外側面２１を拘束して、そのサイドエアバッグ２が展開された窓部５から車外側に飛び出すのを規制するようになっている。   The restricting member 4 is located at the lower part of the window portion 5 and is arranged on the vehicle outer side (front side in the figure) of the side airbag 2, restrains the vehicle outer surface 21 of the deployed side airbag 2, and the side airbag 2 is restricted from jumping out from the window 5 where the two are deployed.

ここで、本実施形態では、規制部材４を、外側枠を構成する中空状のパイプフレーム４１と、サイドエアバッグ２の車外側面２１をパイプフレーム４１に連結する可撓性支持部材としてのワイヤー４２と、を備えて構成してある。   Here, in this embodiment, the regulating member 4 includes a hollow pipe frame 41 constituting an outer frame, and a wire 42 as a flexible support member that couples the outer side surface 21 of the side airbag 2 to the pipe frame 41. And comprising.

パイプレーム４１は、車両前後方向（図中左右方向）に所定間隔Ｓを設けて対向配置され、車両上下方向（図中上下方向）に延在する縦柱部４１ａ、４１ｂと、それら縦柱部４１ａ、４１ｂの上端部を連結する横桟部４１ｃと、によってほぼコ字状に折曲形成してある。   The pipe frame 41 is arranged to face each other with a predetermined interval S in the vehicle front-rear direction (left-right direction in the figure) and extends in the vehicle vertical direction (up-down direction in the figure), and these vertical column parts. It is bent in a substantially U shape by a horizontal crosspiece 41c that connects the upper ends of 41a and 41b.

また、縦柱部４１ａ、４１ｂの下端部には、それぞれを外方に折曲した取付部４１ｄ、４１ｅを設けてあり、それら取付部４１ｄ、４１ｅをガス供給パイプ３１の支持金具３２に溶接Ｗして固定してある。   Further, attachment portions 41d and 41e that are bent outward are provided at the lower end portions of the vertical column portions 41a and 41b, and these attachment portions 41d and 41e are welded to the support fitting 32 of the gas supply pipe 31. And fixed.

ワイヤー４２は、本実施形態では車体上下方向に所定間隔をもって３本を平行配置してあり、それぞれのワイヤー４２の両端部にパイプフレーム４の縦柱部４１ａ、４１ｂに摺動自在に嵌合するリング状の嵌合部４２ａを設けてある。そして、各ワイヤー４２は、帯状布４３によってサイドエアバッグ２の車外側面２１に縫合して固定してある。   In the present embodiment, three wires 42 are arranged in parallel in the vertical direction of the vehicle body with a predetermined interval, and are slidably fitted to the vertical column portions 41 a and 41 b of the pipe frame 4 at both ends of each wire 42. A ring-shaped fitting portion 42a is provided. Each wire 42 is sewn and fixed to the vehicle outer surface 21 of the side airbag 2 with a belt-like cloth 43.

即ち、上述の帯状布４３は、図２に示すように、その帯状布４３とサイドエアバッグ２との間にワイヤー４２を挟み込むようにして、帯状布４３の両側部をサイドエアバッグ２に縫合部４３ａを介して縫合してある。ワイヤー４２は、展開したサイドエアバッグ２が規制部材４に対応する車外側面２１の下部に固定されることになる。   That is, as shown in FIG. 2, the above-described belt-like cloth 43 is sewn on both sides of the belt-like cloth 43 to the side airbag 2 such that the wire 42 is sandwiched between the belt-like cloth 43 and the side airbag 2. It is sutured through the portion 43a. The deployed side airbag 2 is fixed to the lower portion of the vehicle outer surface 21 corresponding to the regulating member 4.

また、ワイヤー４２は、両端部に設けた嵌合部４２ａをパイプフレーム４の縦柱部４１ａ、４１ｂに摺動自在に嵌合してあるので、ワイヤー４２は車体上下方向に自由に移動可能となる。これにより、サイドエアバッグ２の格納時にはワイヤー４２を縦柱部４１ａ、４１ｂの下部にまとめて配置することにより、サイドエアバッグ２の折り畳みにワイヤー４２が支障となることはない。そして、サイドエアバッグ２の展開時には、そのサイドエアバッグ２に伴ってワイヤー４２が順次上方に移動して図１に示す所定位置に配置され、サイドエアバッグ２の車外方向への移動を効率良く拘束する。   Also, since the wire 42 is slidably fitted to the vertical column portions 41a and 41b of the pipe frame 4 at the fitting portions 42a provided at both ends, the wire 42 can be freely moved in the vertical direction of the vehicle body. Become. Accordingly, when the side airbag 2 is stored, the wires 42 are arranged together under the vertical column portions 41 a and 41 b so that the wires 42 do not hinder the folding of the side airbag 2. When the side airbag 2 is deployed, the wires 42 are sequentially moved upward along with the side airbag 2 and arranged at the predetermined positions shown in FIG. 1 so that the side airbag 2 can be efficiently moved in the vehicle exterior direction. to bound.

つまり、本実施形態では、規制部材４をパイプフレーム４１によって枠形成し、そして、サイドエアバッグ２の車外側面２１に縫合したワイヤー４２が、サイドエアバッグ２の展開と同時にパイプフレーム４１に沿って張られることで、サイドエアバッグ２の展開方向を規制できるようになっている。   In other words, in this embodiment, the regulating member 4 is formed into a frame by the pipe frame 41, and the wire 42 sewn to the vehicle outer surface 21 of the side airbag 2 extends along the pipe frame 41 simultaneously with the deployment of the side airbag 2. The deployment direction of the side airbag 2 can be regulated by being stretched.

以上の構成により本実施形態のエアバッグ装置１によれば、規制部材４を、中空状のパイプフレーム４１と、サイドエアバッグ２の車外側面２１をパイプフレーム４１に連結するワイヤー４２と、によって構成したので、規制部材４は、ワイヤー４２が加わるとしても、主に中空状のパイプレーム４１によって構成されるため、規制部材４の軽量化を達成することができる。   According to the airbag device 1 of the present embodiment having the above configuration, the restriction member 4 is configured by the hollow pipe frame 41 and the wire 42 that connects the vehicle outer surface 21 of the side airbag 2 to the pipe frame 41. Therefore, even if the restriction member 4 is added with the wire 42, the restriction member 4 is mainly composed of the hollow pipe frame 41, so that the weight reduction of the restriction member 4 can be achieved.

また、サイドエアバッグ２の車外側面２１をワイヤー４２によってパイプフレーム４１に連結したので、サイドエアバッグ２が展開される際に、そのサイドエアバッグ２と規制部材４との相対位置がずれるのを抑制できるため、サイドエアバッグ２を安定的に規制できる。   In addition, since the outer side surface 21 of the side airbag 2 is connected to the pipe frame 41 by the wire 42, the relative position between the side airbag 2 and the regulating member 4 is shifted when the side airbag 2 is deployed. Since it can suppress, the side airbag 2 can be controlled stably.

更に、本実施形態では、可撓性支持部材をワイヤー４２で構成し、そのワイヤー４２の両端部に設けたリング状の嵌合部４２ａをパイプフレーム４の縦柱部４１ａ、４１ｂに摺動自在に嵌合するとともに、ワイヤー４２を帯状布４３によってサイドエアバッグ２の車外側面２１に固定してある。これにより、可撓性支持部材の軽量化を達成できるとともに、サイドエアバッグ２の展開に伴ってワイヤー４２が縦柱部４１ａ、４１ｂに沿って上昇して、サイドエアバッグ２の車外側への飛び出しを拘束することができ、規制部材４のコンパクト化を図ることができる。   Further, in this embodiment, the flexible support member is constituted by the wire 42, and the ring-shaped fitting portions 42 a provided at both ends of the wire 42 are slidable on the vertical column portions 41 a and 41 b of the pipe frame 4. And the wire 42 is fixed to the vehicle outer side surface 21 of the side airbag 2 by a belt-like cloth 43. Thereby, while being able to achieve weight reduction of a flexible support member, the wire 42 rises along the vertical column portions 41a and 41b with the deployment of the side airbag 2, and the side airbag 2 is moved to the outside of the vehicle. The pop-out can be restrained, and the restriction member 4 can be made compact.

更にまた、パイプフレーム４１は、縦柱部４１ａ、４１ｂの下端部に設けた取付部４１ｄ、４１ｅを、ガス供給パイプ３１の支持金具３２に固定したので、パイプフレーム４１を、サイドエアバッグ２やインフレータ３からなるエアバッグモジュールの一部として構成することができ、規制部材４を含めたエアバッグ装置１の構成を簡素化することができる。   Furthermore, since the pipe frame 41 has the mounting portions 41d and 41e provided at the lower ends of the vertical column portions 41a and 41b fixed to the support fitting 32 of the gas supply pipe 31, the pipe frame 41 is attached to the side airbag 2 or the like. It can be configured as a part of an airbag module including the inflator 3, and the configuration of the airbag device 1 including the regulating member 4 can be simplified.

ところで、本発明のエアバッグ装置は前記実施形態に例をとって説明したが、この実施形態に限ることなく本発明の要旨を逸脱しない範囲で他の実施形態を各種採用することができる。例えば、可撓性支持部材としてはワイヤー４２を用いた場合を例に取って示したが、これに限ることなくサイドエアバッグ２の飛び出しを拘束できる程度の剛性（強度）を有する可撓性の部材であればよく、柔軟な金属膜や剛性の高い樹脂膜または樹脂紐であってもよい。   By the way, although the airbag apparatus of this invention was demonstrated taking the example for the said embodiment, it can employ | adopt various other embodiment in the range which is not restricted to this embodiment and does not deviate from the summary of this invention. For example, although the case where the wire 42 is used as an example of the flexible support member has been shown, the flexible support member is not limited to this and has a rigidity (strength) enough to restrain the side airbag 2 from popping out. It may be a member, and may be a flexible metal film or a highly rigid resin film or resin string.

本発明の実施形態にかかるサイドエアバッグの展開状態を車外側から見た要部斜視図である。It is the principal part perspective view which looked at the deployment state of the side airbag concerning the embodiment of the present invention from the vehicle outside. 図１中Ａ−Ａ線に沿った拡大断面図である。It is an expanded sectional view along the AA line in FIG.

符号の説明Explanation of symbols

１ エアバッグ装置
２ サイドエアバッグ
３ インフレータ
３１ ガス供給パイプ
３２ 支持金具
４ 規制部材
４１ パイプフレーム
４１ａ、４１ｂ 縦柱部
４２ ワイヤー（可撓性支持部材）
４２ａ 嵌合部 DESCRIPTION OF SYMBOLS 1 Airbag apparatus 2 Side airbag 3 Inflator 31 Gas supply pipe 32 Support metal fitting 4 Restriction member 41 Pipe frame 41a, 41b Vertical column part 42 Wire (flexible support member)
42a Fitting part

Claims (3)

車体側方の車体部材に設けられた開口部の下側部に格納され、緊急時に前記開口部を覆うように車体上方に展開するサイドエアバッグと、格納されたサイドエアバッグを保持すると共に、展開したサイドエアバッグの車外側面を拘束する複数の規制部材とを備えたエアバッグ装置において、
前記規制部材を、外側枠を構成する中空状のパイプフレームと、前記サイドエアバッグの車外側面を前記パイプフレームに連結する可撓性支持部材と、を備えて構成し、
前記パイプフレームは、少なくとも車両前後方向に離間して対向配置され、車両上下方向に延在する縦柱部を有し、
前記可撓性支持部材は、両端部に前記パイプフレームの縦柱部に摺動自在に嵌合する嵌合部を設けるとともに、前記サイドエアバッグの車外側面に固定した前記サイドエアバッグの飛び出しを拘束できる剛性を有する可撓性の部材であり、
前記複数の規制部材は、前記サイドエアバッグの展開時に前記パイプフレームの縦柱部に沿って上方に移動することを特徴とするエアバッグ装置。 A side airbag that is stored in a lower side portion of an opening provided in a vehicle body member on the side of the vehicle body and that extends above the vehicle body so as to cover the opening in an emergency, and a stored side airbag are held. In an airbag device comprising a plurality of regulating members that restrain the vehicle outer surface of the deployed side airbag,
The restricting member comprises a hollow pipe frame that forms an outer frame, and a flexible support member that connects a vehicle outer surface of the side airbag to the pipe frame ,
The pipe frame has a vertical column portion that is spaced and disposed opposite to at least the vehicle front-rear direction and extends in the vehicle vertical direction,
The flexible support member is provided with a fitting portion that is slidably fitted to the vertical column portion of the pipe frame at both ends, and the side airbag fixed to the vehicle outer surface of the side airbag is protruded. It is a flexible member having rigidity that can be restrained,
The plurality of restricting members move upward along the vertical column portion of the pipe frame when the side airbag is deployed . 前記可撓性支持部材は、両端部に前記パイプフレームの縦柱部に摺動自在に嵌合する嵌合部を設けるとともに、前記サイドエアバッグの車外側面に固定したワイヤーであることを特徴とする請求項１に記載のエアバッグ装置。   The flexible support member is a wire that is provided at both ends with a fitting portion that is slidably fitted to a vertical column portion of the pipe frame, and is a wire that is fixed to an outer surface of the side airbag. The airbag device according to claim 1. 前記パイプレームは、前記サイドエアバッグにガスを供給するインフレータのガス供給パイプに連通されていることを特徴とする請求項１または２に記載のエアバッグ装置。   The airbag apparatus according to claim 1 or 2, wherein the pipe frame communicates with a gas supply pipe of an inflator that supplies gas to the side airbag.
JP2008257424A 2008-10-02 2008-10-02 Airbag device Expired - Fee Related JP5217863B2 (en)

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