JP3696560B2 - Airbag device - Google Patents

Airbag device Download PDF

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Publication number
JP3696560B2
JP3696560B2 JP2002057768A JP2002057768A JP3696560B2 JP 3696560 B2 JP3696560 B2 JP 3696560B2 JP 2002057768 A JP2002057768 A JP 2002057768A JP 2002057768 A JP2002057768 A JP 2002057768A JP 3696560 B2 JP3696560 B2 JP 3696560B2
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JP
Japan
Prior art keywords
airbag
retainer
packing flap
flap
packing
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.)
Expired - Fee Related
Application number
JP2002057768A
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Japanese (ja)
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JP2003252160A (en
Inventor
英輔 蔵田
完一 福田
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP2002057768A priority Critical patent/JP3696560B2/en
Publication of JP2003252160A publication Critical patent/JP2003252160A/en
Application granted granted Critical
Publication of JP3696560B2 publication Critical patent/JP3696560B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【0001】
【発明の属する技術分野】
本発明は、折り畳んだエアバッグをパッキングフラップで包み、車両の衝突時にインフレータが発生するガスでエアバッグを膨張させ、パッキングフラップを破断してエアバッグを車室内に展開させるエアバッグ装置に関する。
【0002】
【従来の技術】
車両の衝突時に車室内に展開して乗員を拘束するエアバッグは、折り畳み状態でリテーナの内部に収納される。折り畳んだエアバッグは形状が安定せず、エアバッグ単体での運搬時やリテーナの内部への組付時に形が崩れ易いため、布製のパッキングフラップで包んで形状を安定させ、形崩れの防止と取り扱い性の向上とを図っている。車両の衝突時にエアバッグが膨張すると、その圧力でパッキングフラップの脆弱部が破断することで、エアバッグは支障なく車室内に展開することができる。
【0003】
【発明が解決しようとする課題】
ところで、エアバッグの折り畳み状態は展開性能に大きな影響を与えるため、エアバッグをリテーナの内部に組み付けた状態で、その折り畳み状態を最終的に確認する必要がある。しかしながら、パッキングフラップで包まれたエアバッグは外部から直接目視することができないため、その折り畳み状態を簡単に確認することが困難であり、確認作業に多くの時間を要するという問題があった。
【0004】
本発明は前述の事情に鑑みてなされたもので、折り畳んだエアバッグをパッキングフラップで包んだ場合でも、エアバッグの折り畳み状態を容易に確認できるようにすることを目的とする。
【0005】
【課題を解決するための手段】
上記目的を達成するために、請求項1に記載された発明によれば、上面が開放されたリテーナの内部に組付けられたエアバッグが、該リテーナの相対向する一対の側壁間において折り畳まれ且つパッキングフラップで包まれており、車両の衝突時にインフレータが発生するガスでエアバッグを膨張させ、その膨脹圧力でパッキングフラップを破断してエアバッグを車室内に展開させるエアバッグ装置において、パッキングフラップには、リテーナの内部に組付けたエアバッグの折り畳み状態を確認するための複数の開口部が、該リテーナの一方の側壁の上縁に沿って相互に間隔をおいて形成され、それら開口部から離れた位置でエアバッグの膨脹圧力により破断する脆弱部がパッキングフラップに形成されることを特徴とするエアバッグ装置が提案される。
【0006】
上記構成によれば、折り畳んだエアバッグを包むパッキングフラップに開口部を形成したので、エアバッグの折り畳み状態を外部から容易に確認することができ、不適切な折り畳みに起因するエアバッグの展開性能の低下を防止することができる。また上記開口部から離れた位置でパッキングフラップに形成される脆弱部が、エアバッグの膨脹圧力により破断する。
【0007】
【発明の実施の形態】
以下、本発明の実施形態を、添付図面に示した本発明の実施例に基づいて説明する。
【0008】
図1〜図4は本発明の一実施例を示すもので、図1は自動車の車室前部の斜視図、図2は図1の2−2線拡大断面図、図3は図2の3−3線矢視図、図4はエアバッグ装置の分解斜視図である。
【0009】
図1に示すように、助手席シート11の前方に配置されたダッシュボード12の上部に助手席用のエアバッグ装置13が設けられる。
【0010】
図2〜図4に示すように、ダッシュボード12の上面に形成された開口12aに固定されたリッド14から下方に延びる支持部14a…にエアバッグ装置13のリテーナ16が固定される。リテーナ16は複数本のボルト17…で固定されたアッパーリテーナ18およびロアリテーナ19から構成されていて、上面が開放されており、アッパーリテーナ18が複数本のボルト20…で前記リッド14の支持部14a…に固定される。
【0011】
そのリテーナ16の相対向する前後一対の側壁間において折り畳まれたエアバッグ21は布製のパッキングフラップ22に上面および前後面を包まれた状態で、アッパーリテーナ18およびリッド14に囲まれた空間に収納される。パッキングフラップ22の前後縁はエアバッグ21に縫製23,23されており、パッキングフラップ22の下端の固定部22a,22aおよびエアバッグ21の下端の固定部21a,21aが、アッパーリテーナ18およびロアリテーナ19の結合部に挟まれて前記ボルト17…で共締めされる。パッキングフラップ22の上面の後部にはスリット22b…を介して脆弱部22c…が形成され、またその脆弱部22c…から離れたパッキングフラップ22上面の前部には複数個(実施例では2個)の円形の開口部22d,22dが、リテーナ16の一方の側壁の上縁に沿って相互に間隔をおいて形成される。
【0012】
リッド14には、エアバッグ21が膨張する際に破断する薄肉のティアライン14bがH形に形成されるとともに、ティアライン14bの破断に伴って屈曲する2本の薄肉のヒンジライン14c,14cが形成される。ロアリテーナ19の底部に一対の取付ブラケット24,24を介して円筒状のインフレータ25が支持される。
【0013】
しかして、車両の衝突時に所定値以上の加速度が検出されるとインフレータ25が点火し、折り畳まれたエアバッグ21がインフレータ25が発生するガスで膨張を開始する。エアバッグ21が膨張する圧力を受けたパッキングフラップ22は脆弱部22c…が破断し、更にエアバッグ21が膨張する圧力を受けたリッド14は、薄肉のティアライン14bが破断してヒンジライン14c,14cまわりに開放し、そこに形成された開口からエアバッグ21が車室内に展開して乗員を拘束する。
【0014】
折り畳み状態のエアバッグ21は外力により形崩れし易いが、それをパッキングフラップ22で包むことにより形状を安定させ、エアバッグ21単体での運搬時やリテーナ16の内部への組付時に形崩れを防止するとともに、取り扱い性を向上させることができる。またエアバッグ21の折り畳み状態は展開性能に大きな影響を与えるものであり、エアバッグ21をリテーナ16に組み付けた状態で折り畳み状態を最終的に確認する必要がある。このとき、エアバッグ21がパッキングフラップ22で包まれていても、パッキングフラップ22に形成した開口部22d,22dを通してエアバッグ21を目視できるので、その折り畳み状態を容易かつ確実に確認することができ、不完全な折り畳みによるエアバッグ21の展開不良を確実に防止することができる。
【0015】
以上、本発明の実施例を詳述したが、本発明はその要旨を逸脱しない範囲で種々の設計変更を行うことが可能である。
【0016】
例えば、実施例では助手席用のエアバッグ装置13を例示したが、本発明は運転席用あるいはその他の用途のエアバッグ装置に対しても適用することができる。
【0017】
またパッキングフラップ22の開口部22dの数や形状は実施例に限定されず、適宜変更可能である
【0018】
【発明の効果】
以上のように発明によれば、折り畳んだエアバッグを包むパッキングフラップには、リテーナの内部に組付けたエアバッグの折り畳み状態を確認するための複数の開口部が、該リテーナの一方の側壁の上縁に沿って相互に間隔をおいて形成されるので、エアバッグの折り畳み状態を外部から容易に確認することができ、不適切な折り畳みに起因するエアバッグの展開性能の低下を防止することができる。また上記開口部から離れた位置でパッキングフラップに形成される脆弱部が、エアバッグの膨脹圧力により破断する。
【図面の簡単な説明】
【図1】 自動車の車室前部の斜視図
【図2】 図1の2−2線拡大断面図
【図3】 図2の3−3線矢視図
【図4】 エアバッグ装置の分解斜視図
【符号の説明】
16 リテーナ
21 エアバッグ
22 パッキングフラップ
22c 脆弱部
22d 開口部
25 インフレータ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an airbag device that wraps a folded airbag with a packing flap, inflates the airbag with a gas generated by an inflator when a vehicle collides, and breaks the packing flap to deploy the airbag in a vehicle interior.
[0002]
[Prior art]
The airbag that deploys in the passenger compartment and restrains the occupant when the vehicle collides is housed inside the retainer in a folded state. Folded airbags are not stable in shape and can easily collapse when transported as a single airbag or assembled into a retainer, so they can be wrapped with a cloth packing flap to stabilize the shape and prevent deformation. It is intended to improve handling. When the airbag is inflated at the time of a vehicle collision, the weakened portion of the packing flap is broken by the pressure, so that the airbag can be deployed in the vehicle interior without any trouble.
[0003]
[Problems to be solved by the invention]
By the way, since the folded state of the airbag greatly affects the deployment performance, it is necessary to finally confirm the folded state in a state where the airbag is assembled in the retainer. However, since the airbag wrapped with the packing flap cannot be directly observed from the outside, it is difficult to easily confirm the folded state, and there is a problem that a long time is required for the confirmation work.
[0004]
The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to easily check the folded state of an airbag even when the folded airbag is wrapped with a packing flap.
[0005]
[Means for Solving the Problems]
To achieve the above object, according to the first aspect of the present invention, the airbag assembled inside the retainer whose upper surface is opened is folded between a pair of opposing side walls of the retainer. and cage wrapped Marete packing flap, when collision of the vehicle airbag is inflated with a gas inflator occurs, the airbag device is deployed into the passenger compartment of the airbag breaks the packing flap in its expansion pressure, packing flap The plurality of openings for confirming the folded state of the airbag assembled inside the retainer are formed at intervals along the upper edge of one side wall of the retainer. airbag apparatus fragile portion that ruptures due to inflation pressure of the airbag, characterized in that it is formed in the packing flap away from It proposed.
[0006]
According to the above configuration, since the opening is formed in the packing flap that wraps the folded airbag, the folded state of the airbag can be easily confirmed from the outside, and the deployment performance of the airbag caused by improper folding Can be prevented. Moreover, the weak part formed in a packing flap in the position away from the said opening part is fractured | ruptured by the inflation pressure of an airbag.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below based on the embodiments of the present invention shown in the accompanying drawings.
[0008]
1 to 4 show an embodiment of the present invention. FIG. 1 is a perspective view of a front portion of a passenger compartment of an automobile, FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG. 1, and FIG. FIG. 3 is an exploded perspective view of the airbag device.
[0009]
As shown in FIG. 1, an airbag device 13 for a passenger seat is provided on an upper portion of a dashboard 12 disposed in front of the passenger seat 11.
[0010]
As shown in FIGS. 2 to 4, the retainer 16 of the airbag device 13 is fixed to a support portion 14 a extending downward from a lid 14 fixed to an opening 12 a formed on the upper surface of the dashboard 12. The retainer 16 includes an upper retainer 18 and a lower retainer 19 fixed by a plurality of bolts 17... And an upper surface is opened . The upper retainer 18 is supported by the plurality of bolts 20. 14a ... is fixed.
[0011]
Airbag 21 folded between the front and rear pair of side walls facing each of the retainer 16 in a state wrapped an upper surface and front and rear surfaces to fabric packing flap 22, in a space surrounded by the upper retainer 18 and the lid 14 Stored. The front and rear edges of the packing flap 22 are sewn 23 and 23 on the airbag 21, and the fixing portions 22 a and 22 a at the lower end of the packing flap 22 and the fixing portions 21 a and 21 a at the lower end of the airbag 21 are connected to the upper retainer 18 and the lower retainer 19. And are fastened together with the bolts 17. A weak portion 22c is formed in the rear portion of the upper surface of the packing flap 22 through a slit 22b, and a plurality (two in the embodiment) are formed on the front portion of the upper surface of the packing flap 22 away from the weak portion 22c. The circular openings 22d and 22d are formed at intervals along the upper edge of one side wall of the retainer 16 .
[0012]
The lid 14 is formed with an H-shaped thin tear line 14b that breaks when the airbag 21 is inflated, and two thin hinge lines 14c and 14c that are bent when the tear line 14b is broken. It is formed. A cylindrical inflator 25 is supported on the bottom of the lower retainer 19 via a pair of mounting brackets 24, 24.
[0013]
Thus, when acceleration of a predetermined value or more is detected at the time of a vehicle collision, the inflator 25 is ignited, and the folded airbag 21 starts to be inflated with the gas generated by the inflator 25. The packing flap 22 that has received pressure to inflate the airbag 21 is broken at the fragile portion 22c. The air bag 21 is opened around the opening 14c, and the airbag 21 is deployed into the passenger compartment through the opening formed therein to restrain the occupant.
[0014]
The folded airbag 21 is easily deformed by an external force, but the shape is stabilized by wrapping the airbag 21 with a packing flap 22, and the airbag 21 is not deformed when transported alone or assembled into the retainer 16. While preventing, handling property can be improved. Further, the folded state of the airbag 21 has a great influence on the deployment performance, and it is necessary to finally confirm the folded state in a state where the airbag 21 is assembled to the retainer 16. At this time, even if the airbag 21 is wrapped with the packing flap 22, the airbag 21 can be visually observed through the openings 22d and 22d formed in the packing flap 22, so that the folded state can be easily and reliably confirmed. Further, it is possible to surely prevent the development failure of the airbag 21 due to incomplete folding.
[0015]
As mentioned above, although the Example of this invention was explained in full detail, this invention can perform a various design change in the range which does not deviate from the summary.
[0016]
For example, in the embodiment, the airbag device 13 for the passenger seat is illustrated, but the present invention can also be applied to an airbag device for a driver seat or other purposes.
[0017]
Further, the number and shape of the opening 22d of the packing flap 22 are not limited to the embodiment, and can be changed as appropriate .
[0018]
【The invention's effect】
As described above, according to the present invention, the packing flap that wraps the folded airbag has a plurality of openings for confirming the folded state of the airbag assembled inside the retainer, and one side wall of the retainer. Since the airbag is formed at intervals along the upper edge, the folded state of the airbag can be easily confirmed from the outside, and the deterioration of the airbag deployment performance due to improper folding is prevented. be able to. Moreover, the weak part formed in a packing flap in the position away from the said opening part is fractured | ruptured by the inflation pressure of an airbag.
[Brief description of the drawings]
1 is a perspective view of a front part of a passenger compartment of an automobile. FIG. 2 is an enlarged sectional view taken along line 2-2 in FIG. 1. FIG. 3 is a sectional view taken along line 3-3 in FIG. Perspective view [Explanation of symbols]
16 Retainer 21 Airbag 22 Packing flap
22c weak part 22d opening 25 inflator

Claims (1)

上面が開放されたリテーナ(16)の内部に組付けられたエアバッグ(21)が、該リテーナ(16)の相対向する一対の側壁間において折り畳まれ且つパッキングフラップ(22)で包まれており
車両の衝突時にインフレータ(25)が発生するガスでエアバッグ(21)を膨張させ、その膨脹圧力でパッキングフラップ(22)を破断してエアバッグ(21)を車室内に展開させるエアバッグ装置において、
パッキングフラップ(22)には、リテーナ(16)の内部に組付けたエアバッグ(21)の折り畳み状態を確認するための複数の開口部(22d)が、該リテーナ(16)の一方の側壁の上縁に沿って相互に間隔をおいて形成され、それら開口部(22d)から離れた位置でエアバッグ(21)の膨脹圧力により破断する脆弱部(22c)がパッキングフラップ(22)に形成されることを特徴とする、エアバッグ装置。
Top air bag (21) assembled inside the retainer (16) which is opened, wrapped Marete off at the retainer folded and packing flap between a pair of side walls facing each of the (16) (22) ,
In an airbag apparatus in which an airbag (21) is inflated with gas generated by an inflator (25) at the time of a vehicle collision , and the packing flap (22) is broken by the inflation pressure to deploy the airbag (21) in the vehicle interior. ,
The packing flap (22) has a plurality of openings (22d) for confirming the folded state of the airbag (21) assembled inside the retainer (16), on one side wall of the retainer (16). Formed on the packing flap (22) is a fragile portion (22c) which is formed at intervals along the upper edge and is broken by the inflation pressure of the airbag (21) at a position away from the opening (22d). characterized in that that the air bag device.
JP2002057768A 2002-03-04 2002-03-04 Airbag device Expired - Fee Related JP3696560B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002057768A JP3696560B2 (en) 2002-03-04 2002-03-04 Airbag device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002057768A JP3696560B2 (en) 2002-03-04 2002-03-04 Airbag device

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JP3696560B2 true JP3696560B2 (en) 2005-09-21

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4676435B2 (en) * 2004-06-30 2011-04-27 オートリブ ディベロップメント エービー Airbag device
JP5139219B2 (en) * 2007-11-26 2013-02-06 タカタ株式会社 Airbag cover and airbag device
JP5523793B2 (en) * 2009-10-30 2014-06-18 芦森工業株式会社 Airbag device
CA2922234C (en) * 2013-08-23 2019-02-12 Honda Motor Co., Ltd. Air bag device

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