JP2008018805A - Rear airbag for automobile - Google Patents

Rear airbag for automobile Download PDF

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Publication number
JP2008018805A
JP2008018805A JP2006191268A JP2006191268A JP2008018805A JP 2008018805 A JP2008018805 A JP 2008018805A JP 2006191268 A JP2006191268 A JP 2006191268A JP 2006191268 A JP2006191268 A JP 2006191268A JP 2008018805 A JP2008018805 A JP 2008018805A
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Prior art keywords
airbag
roof
inflator
ceiling plate
header
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Yoshinobu Owaki
善信 大脇
Fuminori Odajima
史法 小田島
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Kanto Jidosha Kogyo KK
Toyota Motor East Japan Inc
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Kanto Jidosha Kogyo KK
Kanto Auto Works Ltd
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Priority to JP2006191268A priority Critical patent/JP2008018805A/en
Publication of JP2008018805A publication Critical patent/JP2008018805A/en
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  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Air Bags (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rear airbag for an automobile stored on an inner side of a ceiling plate so as to also function as a mass-damper by ensuring the strength of a roof rear header. <P>SOLUTION: An airbag storage part is formed in a recession part 2c between a front end flange part 2a and a rear end flange part 2e of the roof rear header 2 joined to a rear end of a roof panel 1 respectively, and an inflator 11 stored in the recession part is supported on a support plate 19 provided on the roof rear header 2 so as to add the mass to the roof panel 1. By operation of the inflator 11 at a rear-end collision, an opening area of the ceiling plate 3 is released to be deployed/inflated. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、天井板の後端部分の内側に設けられたエアバッグ収納部にインフレータ及びエアバッグ本体が収納され、このエアバッグ本体が、後突時のインフレータの作動により、エアバッグ本体の膨張領域に在る天井板の開放領域を開放させて展開膨張する自動車のリヤエアバッグに関するものである。   In the present invention, an inflator and an airbag main body are stored in an airbag storage portion provided inside a rear end portion of a ceiling plate, and the airbag main body is inflated by an operation of the inflator at the time of a rear collision. The present invention relates to a rear airbag of an automobile that expands and expands by opening an open area of a ceiling plate in the area.

特許文献１によれば、後突時にリヤシートバックの背後のパッケージトレーに収納されたエアバッグ本体がリヤシートバッグを越えて乗車者の頭部に向けて膨張展開するエアバッグ装置が開示されている。特許文献２によれば、天井板の内側に折畳まれたエアバッグ本体が後突時にリヤウインドに沿って展開膨張するリヤエアバッグが開示されている。一方、特許文献３により、ルーフパネルの共振に起因して車室内に発生するこもり音を抑制するために、マスダンパをルーフフロントヘッダ及び天井板内側のリヤエアバッグの収納領域となるルーフパネル後部に位置するルーフリヤヘッダに設けることが周知となっている。
特開平７−１８６８７０号公報 特開２００５−１０４１７２号公報 特開平１１−３２５１７０号公報 According to Patent Document 1, an airbag device is disclosed in which an airbag body accommodated in a package tray behind a rear seat back is inflated and deployed toward a passenger's head over a rear seat bag at the time of a rear collision. According to Patent Document 2, a rear airbag is disclosed in which an airbag body folded inside a ceiling plate is deployed and inflated along a rear window at the time of a rear collision. On the other hand, according to Patent Document 3, in order to suppress the noise caused by the resonance of the roof panel, the mass damper is attached to the rear portion of the roof panel which is a storage area for the rear airbag on the roof front header and the ceiling plate. It is well known to be provided on the roof rear header located.
Japanese Patent Laid-Open No. 7-186870 Japanese Patent Laid-Open No. 2005-104172 JP 11-325170 A

特許文献１によるエアバッグによれば、頭部に直接エアバッグ本体が展開膨張し、また頭部に対して上方の天井板よりも距離が離れ、頭部への到達がその分遅れることになる。特許文献２によれば、天井板からリヤウインドに沿って展開膨張することを前提とし、リヤシートの着座者の頭部と距離を置くことになり、したがって後突時の頭部の保護のために十分な高さのヘッドレストをリヤシートバッグに設けると、後方視界を妨げることになる。また、天井板の内側にエアバッグを収納する場合、その収納部を構成するのにルーフパネルの後方部分の剛性を向上させるルーフリヤヘッダの構造或はルーフパネルに制振用マスダンパを付加する場合その配置場所との兼ね合いの問題も生じる。   According to the airbag according to Patent Document 1, the airbag body is deployed and inflated directly on the head, and the distance to the head is greater than the upper ceiling plate, and the arrival at the head is delayed accordingly. . According to Patent Document 2, it is assumed that the seat expands and expands from the ceiling plate along the rear window, and therefore, the rear seat is placed at a distance from the head of the seated person. If a sufficiently high headrest is provided on the rear seat bag, the rear view is obstructed. Also, when storing the airbag inside the ceiling plate, when constructing the storage part, the structure of the roof rear header that improves the rigidity of the rear part of the roof panel, or the case where a damping mass damper is added to the roof panel There is also a problem of trade-off with the location.

本発明は、このような点に鑑みて、ルーフリヤヘッダの強度を確保してマスダンパ機能も兼ね得るように、天井板の内側に収納される自動車のリヤエアバッグを提供することを目的とする。   SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a rear airbag for an automobile stored inside a ceiling plate so as to ensure the strength of a roof rear header and also serve as a mass damper function. .

本発明は、この目的を達成するために、請求項１により、天井板の後端部分の内側に設けられたエアバッグ収納部にインフレータ及びエアバッグ本体が収納され、このエアバッグ本体が、後突時のインフレータの作動により、エアバッグ本体の膨張領域に在る天井板の開放領域を開放させて展開膨張する自動車のリヤエアバッグにおいて、エアバッグ収納部が、ルーフパネルの後端部にそれぞれ接合されるルーフリヤヘッダの前端フランジ部及び後端フランジ部間の凹部に形成され、この凹部に収納されるインフレータが、その質量をルーフパネルに付加するようにルーフリヤヘッダに設けた支持部材に支持されたことを特徴とする。   In order to achieve this object, according to the present invention, an inflator and an airbag main body are accommodated in an airbag accommodating portion provided inside a rear end portion of a ceiling plate. In the rear airbag of an automobile that is deployed and inflated by opening the opening area of the ceiling plate in the inflating area of the airbag body by the operation of the inflator at the time of the impact, the airbag storage part is provided at the rear end part of the roof panel. The inflator formed in the recess between the front end flange portion and the rear end flange portion of the roof rear header to be joined is attached to the support member provided on the roof rear header so as to add its mass to the roof panel. It is characterized by being supported.

インフレータは、ルーフリヤヘッダに支持されることにより、ルーフパネルに通常のマスダンパもしくはそれを越える質量が付加されてマスダンパの機能を果す。その際の展開膨張の形態としては、請求項２によりエアバッグ本体が、リヤウインドに沿って展開膨張し、さらに請求項３によりリヤウインドに当接した状態でリヤヘッドレスト前面の上方間に展開膨張する。   The inflator is supported by the roof rear header, so that a mass damper or a mass exceeding the normal mass damper is added to the roof panel to perform the function of the mass damper. In this case, the airbag body is deployed and inflated along the rear window according to claim 2, and further deployed and inflated between the front surface of the rear headrest in contact with the rear window according to claim 3. To do.

請求項１の発明によれば、リヤエアバックを天井板の内側に収納する際に、ルーフリヤヘッダの前端フランジ部及び後端フランジ部間にエアバッグ収納部としての凹部を形成するプレート形状により、ルーフリヤヘッダの強度を確保した上で、このルーフリヤヘッダにインフレータが支持されることによりマスダンパ機能を果すために別途にマスダンパを設ける必要がなくなる。その際、請求項２の発明によればリヤウインドに向けて展開膨張させることができ、請求項３の発明によればリヤウインド及びリヤヘッドレスト間に展開膨張させることができる。   According to the first aspect of the present invention, when the rear airbag is stored inside the ceiling plate, the plate shape that forms a recess as an airbag storage portion between the front end flange portion and the rear end flange portion of the roof rear header. Since the roof rear header is secured and the inflator is supported by the roof rear header, it is not necessary to separately provide a mass damper in order to perform the mass damper function. In that case, according to the invention of claim 2, it can be expanded and expanded toward the rear window, and according to the invention of claim 3, it can be expanded and expanded between the rear window and the rear headrest.

図１乃至図３を基に本発明の実施の形態による自動車のリヤエアバッグを説明する。図１はルーフパネル１にリヤウインド４が後続する乗用車のリヤエアバッグを示すもので、ルーフパネル１に沿って基材３ａに表皮３ｂで成層した天井板３が設けられている。ルーフパネル１の後端部に設けられるルーフリヤヘッダ２は、ルーフパネル１に接着により接合される前端フランジ部２ａに続いて下方へ突出する断面コの字形の前側凸部２ｂ及び間隔を置いて断面コの字形の後側凸部２ｄを有すると共に、この後側凸部に後続する後端フランジ部２ｅもルーフパネル１のフランジ部１ａに溶接で接合され、これらの前後２個の凸部間のルーフパネル１に接着接合される凹部２ｃが、インフレータ１１及びエアバッグ本体１２を収納するエアバッグ収納部となる。ルーフリヤヘッダ２の左右端は、ルーフサイドレールの後方のボデーパネル部分に接合されて、ルーフパネル１の後方部分の剛性を向上させる。   A vehicle rear airbag according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a rear airbag of a passenger car in which a rear window 4 follows a roof panel 1, and a ceiling plate 3 laid on a base material 3 a with a skin 3 b is provided along the roof panel 1. The roof rear header 2 provided at the rear end portion of the roof panel 1 has a front-side convex portion 2b having a U-shaped cross-section projecting downward following the front end flange portion 2a joined to the roof panel 1 by adhesion, and spaced apart. A rear-side convex part 2d having a U-shaped cross-section and a rear-end flange part 2e following the rear-side convex part are also joined to the flange part 1a of the roof panel 1 by welding, and between the two front and rear convex parts. The concave portion 2c that is adhesively bonded to the roof panel 1 serves as an airbag storage portion that stores the inflator 11 and the airbag main body 12. The left and right ends of the roof rear header 2 are joined to the body panel portion behind the roof side rail to improve the rigidity of the rear portion of the roof panel 1.

図３に示すリヤシートバック８の上端に突設されたヘッドレスト９の上方の天井板３の開放すべき領域、即ちエアバッグ本体１２の前面に対面する膨張領域に在る開放領域には、インテグラルヒンジ部１４が介在する天井板本体の前側エアバッグドア１５と、このエアバッグドアの後端に連設されるように、リテーナ２０により車幅方向の複数個所で支持され、かつ天井板３の後端開口を塞ぐガーニッシュとして機能する後側エアバッグドア１６とが形成されている。インテグラルヒンジ部１４は、基材３ａを肉薄にして車幅方向に形成されている。ヘッドレスト９の高さ位置は、運転席からの標準的な視線の高さ位置よりも僅かに低く設定されている。   In the area to be opened of the ceiling plate 3 above the headrest 9 protruding from the upper end of the rear seat back 8 shown in FIG. 3, that is, in the opening area in the inflating area facing the front surface of the airbag body 12, The front airbag door 15 of the ceiling board main body with the hinge portion 14 interposed therebetween and supported by a retainer 20 at a plurality of locations in the vehicle width direction so as to be connected to the rear end of the airbag door, and the ceiling board 3 A rear airbag door 16 that functions as a garnish that closes the rear end opening is formed. The integral hinge portion 14 is formed in the vehicle width direction with the base material 3a being thin. The height position of the headrest 9 is set slightly lower than the height position of the standard line of sight from the driver's seat.

各リテーナ２０は、図２に示すように、金属製のプレートをＵ字形に折返して上面２１及び下面２２を形成すると共に、それぞれに曲げ強度を確保するために外方へ隆起したビード２１ａ、２２ａが形成されている。上面２１には切起しにより挟持面２５が形成され、その開口部と、挟持面２５の両側の上面２１に形成された開口部とに、下向きの逆止爪２７及び上向きの逆止爪２６がそれぞれ形成されている。リテーナ２０は、後端フランジ部２ｅの延長部分に、上面２１及び挟持面２５間の隙間を係入させて逆止爪２６、２７をかしめ込んだ挟持状態で保持される。これにより、下面２２には、前側エアバッグドア１５にスリット１６ａを介して分離状態で連設されるように、後側エアバッグドア１６の裏面が接着される。リテーナ２０のＵ字形の折返し領域は、後側エアバッグドア１６を支持し、かつエアバッグ本体１２の膨張押圧により確実に開拡し得るように、開口部２３ａにより強度を調整されたヒンジ部２３として形成されている。   As shown in FIG. 2, each retainer 20 folds a metal plate into a U shape to form an upper surface 21 and a lower surface 22, and beads 21 a and 22 a that protrude outward to secure bending strength. Is formed. A clamping surface 25 is formed on the upper surface 21 by cutting up, and a downward check claw 27 and an upward check claw 26 are formed in the opening and openings formed in the upper surface 21 on both sides of the clamping surface 25. Are formed respectively. The retainer 20 is held in a sandwiched state in which the check pawls 26 and 27 are caulked by engaging the gap between the upper surface 21 and the sandwiching surface 25 into the extended portion of the rear end flange portion 2e. Thus, the back surface of the rear airbag door 16 is bonded to the lower surface 22 so as to be connected to the front airbag door 15 in a separated state via the slit 16a. The U-shaped folded region of the retainer 20 supports the rear airbag door 16, and the hinge portion 23 whose strength is adjusted by the opening 23a so as to be surely expanded by the inflation pressure of the airbag body 12. It is formed as.

凹部２ｃに収納されるインフレータ１１は、前側凸部２ｂの凸面に接合された支持プレート１９に載置されることにより、ルーフパネル１に６００〜８００ｇの質量を付加し、したがってルーフリヤヘッダに設けられる通常２００〜４００ｇ程度のマスダンパの代替機能を果たす。その際、ルーフリヤヘッダ２は、それぞれ接合される前後端のフランジ部２ａ、２ｅ間に、前側凸部２ｂ、凹部２ｃ及び後側凸部２ｄを順に形成する二重コの字形のプレート形状により、ルーフリヤヘッダとして本来の機能を充分に果す。   The inflator 11 accommodated in the concave portion 2c is placed on the support plate 19 joined to the convex surface of the front convex portion 2b, thereby adding a mass of 600 to 800 g to the roof panel 1, and thus provided on the roof rear header. It serves as a substitute for a mass damper of about 200 to 400 g. At that time, the roof rear header 2 has a double U-shaped plate shape that sequentially forms a front convex portion 2b, a concave portion 2c, and a rear convex portion 2d between the front and rear flange portions 2a and 2e to be joined. , Fulfills its original function as a roof rear header.

このような両開き式の天井板本体の前側エアバッグドア１５及び天井板後部となる後側エアバッグドア１６と、車両の後突を検知してガスを発生するインフレータ１１と、そのガスで膨張するエアバッグ本体１２等でリヤエアバッグ１０が、天井板３内に構成されると共に、エアバッグドア１５、１６はヘッドレスト９の上方よりも前方寄りに位置を占め、これらのドア間のスリット１６ａが、ヘッドレスト上方の前方寄りの位置を占めている。エアバッグ本体１２は、ヘッドレスト９の上方よりも前方寄りに位置決めされ、かつ折畳み状態でヘッドレスト９の上面に向けて斜めに格納されて車幅方向に延在している。また、エアバッグ本体１２の形状は、エアバッグドア１５、１６で形成される開放領域に後続する上方面であるリヤウインド４に圧接した状態で、ヘッドレスト９の前面９ａの上方、即ち頭部後面から背後に展開膨張するように設定されており、膨張により後側凸部２ｄの前面２ｆのコーナ領域に沿って展開膨張方向をガイドされ、エアバッグドア１５、１６を両開きさせて斜め後方へ突出し、ヘッドレスト９の背後へ膨張し、リヤウインド４に圧接した状態で、ヘッドレスト９の前面９ａの上方に後側エアバッグドア１６を介して展開膨張する。   The front airbag door 15 and the rear airbag door 16 which is the rear portion of the ceiling plate, the inflator 11 which generates a gas by detecting the rear collision of the vehicle, and the gas are inflated. The rear airbag 10 is configured in the ceiling plate 3 by the airbag main body 12 and the like, and the airbag doors 15 and 16 occupy a position closer to the front than above the headrest 9, and a slit 16a between these doors is formed. Occupies a position near the front above the headrest. The airbag main body 12 is positioned closer to the front than above the headrest 9, and is stored obliquely toward the upper surface of the headrest 9 in the folded state and extends in the vehicle width direction. The shape of the airbag main body 12 is such that the airbag main body 12 is in pressure contact with the rear window 4 that is the upper surface following the open area formed by the airbag doors 15 and 16, above the front surface 9a of the headrest 9, that is, the rear surface of the head. It is set so as to be deployed and inflated from the rear, and the inflation and inflation direction is guided along the corner area of the front surface 2f of the rear convex portion 2d by the inflation, and the airbag doors 15 and 16 are both opened to project obliquely rearward. Inflated behind the headrest 9 and pressed against the rear window 4, the headrest 9 is deployed and inflated via the rear airbag door 16 above the front surface 9 a of the headrest 9.

このように構成されたリヤエアバッグの動作は次の通りである。通常状態ではリヤシートの着座者は視線を妨げない高さのヘッドレスト９を利用することができ、またインフレータ１１はその質量をルーフパネル１に付加して、その共振に起因して発生するこもり音を抑制する。   The operation of the thus configured rear airbag is as follows. Under normal conditions, the seat occupant of the rear seat can use the headrest 9 having a height that does not obstruct the line of sight, and the inflator 11 adds its mass to the roof panel 1 to generate a humming noise caused by the resonance. Suppress.

所定レベルを越える衝撃を伴った後突によりインフレータ１１が作動すると、エアバッグ本体１２の膨張により、前側エアバッグドア１５及び後側エアバッグドア１６が、前者はインテグラルヒンジ部１４を支点とし、また後者はリテーナ２０のヒンジ部２３を支点とし、天井板３の割れによる飛散或はシャープエッジの発生を伴うことなく、確実に所定の形状に両開きする。これにより、エアバッグ本体１２は、後側凸部２ｄの前面コーナ部及び開放したエアバッグドア１５、１６に沿ってヘッドレスト９の背後に展開し、後側エアバッグドア１６を介してリヤウインド４に圧接すると共に、ヘッドレスト９の前面９ａの上方から背後に安定した形状に展開膨張する。したがって、後突時に頭部上方の至近位置から高速でヘッドレスト９の上方空間が閉鎖され、頭部が確実に保護される。   When the inflator 11 is actuated by a rear impact with an impact exceeding a predetermined level, the front airbag door 15 and the rear airbag door 16 are caused to inflate by the inflation of the airbag body 12, and the former has the integral hinge portion 14 as a fulcrum, Further, the latter uses the hinge portion 23 of the retainer 20 as a fulcrum, and reliably opens both sides into a predetermined shape without being scattered due to cracks in the ceiling plate 3 or generating sharp edges. As a result, the airbag main body 12 is deployed behind the headrest 9 along the front corner portion of the rear convex portion 2d and the opened airbag doors 15 and 16, and the rear window 4 passes through the rear airbag door 16. The headrest 9 expands and expands in a stable shape from the upper side to the rear side of the front surface 9a. Therefore, the upper space of the headrest 9 is closed at high speed from a close position above the head at the time of a rear collision, and the head is reliably protected.

以上、この実施の形態では、エアバッグドアを両開き式として説明したが、図１において、前側エアバッグドア１５を廃止し、対応して後側エアバッグドア１６を開放時に頭部に干渉させないことも考慮して前方へ拡げることにより、天井板本体の後端にスリットを介して分離状態で連接する片開き式のエアバッグドアとして構成することもできる。また、車体構造によっては、エアバッグはヘッドレストの上方面であるバックドア間で展開膨張する。   As described above, in this embodiment, the airbag door is described as a double-opening type. However, in FIG. 1, the front airbag door 15 is eliminated, and the rear airbag door 16 is not caused to interfere with the head when opened. In consideration of the above, it can be configured as a single-opening type air bag door that is connected to the rear end of the ceiling plate main body in a separated state through a slit. Further, depending on the vehicle body structure, the airbag is deployed and inflated between the back doors that are the upper surface of the headrest.

図４はルーフパネルの後端にバックドアが設けられた自動車のリヤエアバッグを示すもので、ルーフパネル１の後端部のヒンジ収納部１ａに取付けられたヒンジ３１によりバックドア３０が支持されると共に、ルーフリヤヘッダ３２は、ルーフパネル１に接合される前端フランジ部３２ａに続いて下方へ突出する断面コの字形の前側凸部３２ｂ及び間隔を置いて断面コの字形の後側凸部３２ｄを有すると共に、この後側凸部に後続する後端フランジ部３２ｅもヒンジ収納部１ａのフランジ部に接合され、これらの前後２個の凸部間の凹部３２ｃがインフレータ４１及びエアバッグ本体４２の一部を収納するエアバッグ収納部となる。   FIG. 4 shows a rear airbag of an automobile in which a back door is provided at the rear end of the roof panel. The back door 30 is supported by a hinge 31 attached to the hinge storage portion 1a at the rear end of the roof panel 1. In addition, the roof rear header 32 has a U-shaped front convex portion 32b protruding downward following a front end flange portion 32a joined to the roof panel 1, and a U-shaped rear convex portion spaced apart from each other. The rear end flange portion 32e following the rear convex portion is also joined to the flange portion of the hinge accommodating portion 1a, and the concave portion 32c between the two front and rear convex portions is formed in the inflator 41 and the airbag main body 42. It becomes an airbag storage part which stores a part of.

ルーフパネル１に沿った天井板３３の後端部には、その基材３３ａの肉薄部で形成されて車幅方向に延在するインテグラルヒンジ部３３ｂを介してエアバッグア４５が形成されている。その後端部は後端フランジ部３２ｅの延長部分に係合する合成樹脂製の係止部４６の凹部に離脱可能に係合している。インフレータ４１は前側凸部３２ｂの凸面にねじ止めされた支持部材としての支持プレート４９に支持されて、ルーフパネル１にその質量を付加してマスダンパ機能を果している。後側凸部３２ｄの凸面３２ｆ及び天井板３３間の空間部である残りのエアバッグ収納部には、折畳まれて車幅方向に延在するエアバッグ本体４２の前方部分が収納されている。   An airbag door 45 is formed at the rear end portion of the ceiling plate 33 along the roof panel 1 via an integral hinge portion 33b formed by a thin portion of the base material 33a and extending in the vehicle width direction. The rear end portion is detachably engaged with a concave portion of a synthetic resin engaging portion 46 that engages with an extended portion of the rear end flange portion 32e. The inflator 41 is supported by a support plate 49 as a support member screwed to the convex surface of the front convex portion 32b, and adds mass to the roof panel 1 to perform a mass damper function. The remaining airbag storage portion, which is the space between the convex surface 32f of the rear convex portion 32d and the ceiling plate 33, stores the front portion of the airbag main body 42 that is folded and extends in the vehicle width direction. .

これにより、後突時にインフレータ４１が作動すると、その支持プレート４９を貫通するガス供給管に接続するエアバッグ本体４２が後方へ展開膨張してエアバッグドア４５を開放させ、凸面３２ｆに沿って後方へ展開膨張し、バックドア３０のリヤウインド３４に当接して、さらにこのリヤウインに沿って下向きに展開膨張する。   As a result, when the inflator 41 is actuated at the time of a rear collision, the airbag main body 42 connected to the gas supply pipe that penetrates the support plate 49 is expanded and inflated rearward to open the airbag door 45 and rearward along the convex surface 32f. Expands and expands toward the rear, abuts against the rear window 34 of the back door 30, and further expands and expands downward along the rear window.

本発明の実施の形態による自動車のリヤエアバッグの断面図である。It is sectional drawing of the rear airbag of the motor vehicle by embodiment of this invention. 同リヤエアバッグのガーニッシュドアを支持するリテーナの斜視図である。It is a perspective view of the retainer which supports the garnish door of the rear airbag. 同リヤエアバッグの展開膨張状態を示す断面図である。It is sectional drawing which shows the expansion | deployment state of the rear airbag. 別の実施の形態によるリヤエアバッグの断面図である。It is sectional drawing of the rear airbag by another embodiment.

符号の説明Explanation of symbols

１ ルーフパネル
２、３２ ルーフリヤヘッダ
２ａ、３２ａ ルーフリヤヘッダの前端フランジ部
２ｂ、３２ｂ ルーフリヤヘッダの前側凸部
２ｃ、３２ｃ ルーフリヤヘッダの凹部
２ｄ、３２ｄ ルーフリヤヘッダの後側凸部
２ｅ、３２ｅ ルーフリヤヘッダの後端フランジ部
３、３３ 天井板
８ リヤシートバック
９ ヘッドレスト
１１、４１ インフレータ
１２、４２ エアバッグ本体
１４ インテグラルヒンジ部
１５ 前側エアバッグドア
１６ 後側エアバッグドア
１９、４９ 支持プレート
２０ リテーナ
２１ リテーナの上面
２２ リテーナの下面
３４ リヤウインド
４５ エアバッグドア
DESCRIPTION OF SYMBOLS 1 Roof panel 2, 32 Roof rear header 2a, 32a Front end flange part 2b, 32b Roof rear header front convex part 2c, 32c Roof rear header concave part 2d, 32d Roof rear header rear convex part 2e, 32e Rear rear flange portion of roof rear header 3, 33 Ceiling plate 8 Rear seat back 9 Headrest 11, 41 Inflator 12, 42 Airbag body 14 Integral hinge portion 15 Front airbag door 16 Rear airbag door 19, 49 Support plate 20 Retainer 21 Upper surface of retainer 22 Lower surface of retainer 34 Rear window 45 Airbag door

Claims (3)

天井板の後端部分の内側に設けられたエアバッグ収納部にインフレータ及びエアバッグ本体が収納され、このエアバッグ本体が、後突時のインフレータの作動により、エアバッグ本体の膨張領域に在る天井板の開放領域を開放させて展開膨張する自動車のリヤエアバッグにおいて、
エアバッグ収納部が、ルーフパネルの後端部にそれぞれ接合されるルーフリヤヘッダの前端フランジ部及び後端フランジ部間の凹部に形成され、
この凹部に収納されるインフレータが、その質量を前記ルーフパネルに付加するように前記ルーフリヤヘッダに設けた支持部材に支持されたことを特徴とする自動車のリヤエアバッグ。 The inflator and the airbag main body are stored in the airbag storage portion provided inside the rear end portion of the ceiling plate, and the airbag main body is in the inflated region of the airbag main body by the operation of the inflator at the time of rear collision. In the rear airbag of an automobile that expands and expands by opening the open area of the ceiling plate,
The airbag storage portion is formed in a recess between the front end flange portion and the rear end flange portion of the roof rear header joined to the rear end portion of the roof panel,
A rear airbag for an automobile, wherein an inflator housed in the recess is supported by a support member provided on the roof rear header so as to add its mass to the roof panel. エアバッグ本体が、リヤウインドに沿って展開膨張することを特徴とする請求項１記載の自動車のリヤエアバッグ。   The rear airbag according to claim 1, wherein the airbag body is deployed and inflated along the rear window. エアバッグ本体が、リヤウインドに当接した状態でリヤヘッドレスト前面の上方間に展開膨張することを特徴とする請求項２記載の自動車のリヤエアバッグ。   3. The rear airbag according to claim 2, wherein the airbag body is deployed and inflated between the upper part of the front surface of the rear headrest in a state where the airbag body is in contact with the rear window.
JP2006191268A 2006-07-12 2006-07-12 Rear airbag for automobile Pending JP2008018805A (en)

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