JP4180415B2 - Rear seat airbag device - Google Patents

Rear seat airbag device Download PDF

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Publication number
JP4180415B2
JP4180415B2 JP2003086041A JP2003086041A JP4180415B2 JP 4180415 B2 JP4180415 B2 JP 4180415B2 JP 2003086041 A JP2003086041 A JP 2003086041A JP 2003086041 A JP2003086041 A JP 2003086041A JP 4180415 B2 JP4180415 B2 JP 4180415B2
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Japan
Prior art keywords
seat
airbag
rear seat
inflated
front seat
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JP2003086041A
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JP2004291790A (en
Inventor
裕之 小林
武明 加藤
誠 関塚
成和 今中
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Toyota Motor Corp
Toyoda Gosei Co Ltd
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Toyota Motor Corp
Toyoda Gosei Co Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、衝突等による衝撃が車両に加わったときに、後席乗員の膝下の部位を保護する後席用エアバッグ装置に関するものである。なお、本明細書において「前席」とは、後方に他の席がある席を意味し、運転席及び助手席に限らない。また、「後席」は、「前席」の後にある席を意味する。
【０００２】
【従来の技術】
従来のこの種の後席用エアバッグ装置としては、前席のシートベースフレームに設けられたエアバッグモジュールから、後席乗員に向かってエアバッグが展開するものがある。このエアバッグは、前席背もたれ部の後方において背もたれ部の背面に沿って上方に展開し、次いで、後席乗員の胸部あるいは頭部の前方で展開する（特許文献１参照。）。
【０００３】
【特許文献１】
特表２００２−５４２１００号公報
【０００４】
【発明が解決しようとする課題】
ところで、後席乗員がシートベルトを適正な姿勢で装着していなかったときには、車両の衝突時に後席乗員の腰から下の部分がもぐり込むようにして前方に移動するいわゆるサブマリン現象や、膝下や足先が前席の座部と車室フロアとの間の空間に入り込む可能性がある。
【０００５】
一方、上記特許文献１に記載の後席用エアバッグ装置は、エアバッグモジュールから展開するエアバッグが、前席の背もたれ部の背面側と、後席乗員の胸部あるいは頭部の前方で展開するのみであるため、後席乗員の膝下、特に足先を保護することができなかった。
【０００６】
本発明は、上記課題を解決するためになされたものであって、その目的は、後席乗員の膝下、主として足先を有効に保護することができるエアバッグ装置を提供することにある。
【０００７】
【課題を解決するための手段】
上記目的を達成するため、請求項１に記載の発明は、前席の座部に設けられ、前席と後席との間において展開膨張するエアバッグと該エアバッグ内にガスを供給するインフレータとを備えた後席用エアバッグ装置であって、前記エアバッグ及び前記インフレータを収容するとともに前記後席側に向いた開口部を有するケースが前記前席の座部の下面に設けられ、前記エアバッグには、前記前席の座部とフロアとの間の空間を塞ぐように展開膨張する膨張部が設けられていることを要旨とするものである。
【０００８】
請求項１に記載の発明によれば、前席の座部とフロアとの間において展開膨張したエアバッグにより、後席乗員の膝下、主として足先が有効に保護される。
【０００９】
請求項２に記載の発明は、前席の座部に設けられ、前席と後席との間において展開膨張するエアバッグと該エアバッグ内にガスを供給するインフレータとを備えた後席用エアバッグ装置であって、前記エアバッグ及び前記インフレータを収容するとともに前記後席側に向いた開口部を有するケースが前記前席の座部の下面に設けられ、前記エアバッグには、前記前席の背もたれ部に沿って展開膨張する上部膨張部と、前記前席の座部とフロアとの間の空間を塞ぐように展開膨張する下部膨張部とが設けられていることを要旨とするものである。
【００１０】
請求項２に記載の発明によれば、前席の背もたれ部に沿って展開膨張する上部膨張部によって後席乗員の膝及び膝下が保護され、また、前席の座部とフロアとの間の空間を塞ぐように展開膨張する下部膨張部によって後席乗員の膝下、主として足先が有効に保護される。
【００１１】
請求項３に記載の発明は、請求項２に記載の発明において、前記下部膨張部が展開膨張した際にフロアに接触するように構成されていることを要旨とするものである。
請求項３に記載の発明によれば、請求項２に記載の発明の作用に加えて、前席の座部とフロアとの間の空間を確実に塞ぐことができるとともに、下部膨張部とフロアとの接触を反力として、上部膨張部を前席の背もたれ部に沿って上方へ展開させることができる。
【００１２】
請求項４に記載の発明は、請求項１〜請求項３のいずれか一項に記載の発明において、前記エアバッグには、該エアバッグが展開膨張する際に全体が扁平状をなすように規制する規制手段が設けられていることを要旨とするものである。
請求項４に記載の発明によれば、請求項１〜請求項３のいずれか一項に記載の発明の作用に加えて、規制手段によりエアバッグ全体が扁平状に展開膨張するので、エアバッグが後席乗員の膝下を強圧することがなく、膝下と前席との間を埋めるようにして、膝下を有効に保護する。
【００１３】
請求項５に記載の発明は、請求項１〜請求項４のいずれか一項に記載の発明において、前記前席の座部とフロアとの間においてエアバッグの前面を支持する支持部材が設けられていることを要旨とするものである。
【００１４】
請求項５に記載の発明によれば、請求項１〜請求項４のいずれか一項に記載の発明の作用に加えて、前席の座部とフロアとの間においてエアバッグの前面が支持部材に支持されるので、エアバッグをほぼ上方に向かうように展開膨張させることができる。従って、エアバッグを、前席の背もたれ部の背面に沿って展開膨張させることができるので、後席乗員の膝下等を有効に保護できる。しかも、支持部材により、エアバッグが前席座部とフロアとの間の空間前方に移動することが防止され、足先がいっそう有効に保護される。
【００１５】
請求項６に記載の発明は、請求項５に記載の発明において、前記支持部材が前記ケースに設けられていることを要旨とするものである。
【００１６】
請求項６に記載の発明によれば、請求項５に記載の発明の作用に加えて、支持部材がケースに設けられた状態で提供されるので、車両への組み付けが容易となる。
【００１７】
【発明の実施の形態】
以下、本発明を具体化した実施形態を図１〜図５に従って説明する。
図２に示すように、エアバッグ装置としてのエアバッグモジュール１０は、車両における前席１１の座部１２の下面に固定されている。
【００１８】
図３に示すように、エアバッグモジュール１０は、座部１２に固定されたケース１３、ケース１３内に収容されたインフレータ１４、ケース１３に収容されるとともにインフレータ１４が供給するガスによって前席１１と後席１５との間で展開膨張するエアバッグ１６を備えている。
【００１９】
図４に示すように、ケース１３は、後席１５側に向いた開口部１７を有し、この開口部１７から折り畳み状態のエアバッグ１６を後席１５側に展開させるようになっている。開口部１７は、エアバッグ１６の展開時にティアライン１８ａ，１８ｂで切り離されて上下に開く上側蓋部１９ａ及び下側蓋部１９ｂによって閉塞されている。
【００２０】
図１及び図５に示すように、エアバッグ１６は、その内部において前側の基布１６ａと、後側の基布１６ｂとの間に設けられた規制手段としてのテザー２０ａ，２０ｂ，２０ｃにより、全体が扁平状をなすように、かつ、前後方向視で略四角形に展開膨張するようになっている。エアバッグ１６は、前席１１の背もたれ部２１に沿って展開膨張し、その背もたれ部２１と後席乗員の膝下Ｎとの間に配置される上部膨張部２２と、前席１１の座部１２からフロアＦに接するまで展開膨張し、座部１２とフロアＦとの間の空間を塞ぐ膨張部としての下部膨張部２３とを備えている。
【００２１】
図３及び図４に示すように、ケース１３の下面には、エアバッグ１６が展開膨張する方向が所定の方向となるようにガイドするとともにサポートする支持部材としてのサポートガイド２４が設けられている。図１に示すように、サポートガイド２４は、エアバッグ１６の展開膨張時に、前席１１の座部１２とフロアＦとの間において、ケース１３の開口部１７の下側から後斜め下方に延びる支持部２５を有し、この支持部２５によってエアバッグ１６の下部膨張部２３の前面２３ａを支持する。
【００２２】
次に、以上のように構成された本実施形態の作用について説明する。
車両に加わった衝撃に基づいてインフレータ１４が作動され、エアバッグ１６にガスが供給されると、エアバッグ１６はケース１３の開口部１７から飛び出し、前席１１の座部１２との間で展開膨張していく。
【００２３】
このとき、下部膨張部２３は、座部１２とフロアＦとの間の空間を塞ぐように展開膨張し、サポートガイド２４の支持部２５によって座部１２とフロアＦとの間で支持される。このため、図１に示すように、上部膨張部２２は、その展開方向が規制され、２点鎖線及び矢印で示すように、ほぼ上方に向かって展開していく。従って、上部膨張部２２は、前席１１の背もたれ部２１の背面２２ａに沿うように展開する。
【００２４】
エアバッグ１６の展開膨張が終了したとき、上部膨張部２２は、前席１１の背もたれ部２１と後席乗員の膝及び膝下Ｎとの間に配置され、下部膨張部２３は、前席１１の座部１２とフロアＦとの間の空間を塞ぐ。従って、後席乗員は、その膝及び膝下Ｎが上部膨張部２２によって保護され、その足先Ｌが下部膨張部２３によって保護される。
【００２５】
次に、以上詳述した本実施形態が有する効果を列記する。
（１） 前席１１の背もたれ部２１に沿って上方に展開する上部膨張部２２によって、後席乗員の膝及び膝下Ｎが有効に保護されるとともに、後席乗員の前方への移動を防止し、サブマリン現象を防止できる。
【００２６】
（２） 前席１１と後席１５との間の空間において展開膨張する下部膨張部２３により、足先Ｌが座部１２の下方に侵入することが防止され、その足先Ｌが有効に保護される。
【００２７】
（３） エアバッグ１６は、その内部に設けられたテザー２０ａ〜２０ｃ（規制手段）により全体が扁平状をなすように展開膨張する。このため、エアバッグ１６が後席乗員の膝下Ｎを強圧することがなく、膝下Ｎと前席１１との間を埋めるようにして、膝及び膝下Ｎを効果的に保護する。
【００２８】
（４） サポートガイド（支持部材）２４が、前席１１の座部１２とフロアＦとの間においてエアバッグ１６の下部膨張部２３の前面２３ａを支持するため、上部膨張部２２がほぼ上方に向かうように展開膨張するとともに、下部膨張部２３の前方移動を阻止する。従って、後席乗員の膝及び膝下Ｎを有効に保護できるとともに、足先Ｌの座部１２の下方へのもぐり込みを阻止して足先Ｌを有効に保護できる。
【００２９】
（５） サポートガイド２４は、前席１１の座部１２の下面に固定されたエアバッグモジュール１０のケース１３に設けられている。従って、サポートガイド２４をエアバッグモジュール１０と共に提供することができるので、車両への組み付けが容易となる。
【００３０】
次に、上記一実施形態以外の実施形態を列記する。
・ 下部膨張部２３を支持するための支持部材は、前席１１の座部１２とフロアＦとの間の空間において下部膨張部２３の前面２３ａを支持することができればよく、エアバッグモジュール１０と別体に設けられ、例えばフロアＦ上に固定されるものであってもよい。
【００３１】
・ 前記支持部材は、例えば、図６に示すように、開口部１７側で軸３０を介して上下に回動可能な支持部３１を有するサポートガイド３２であってもよい。そして、エアバッグ１６の展開膨張時に、図７に示すように、下側蓋部１９ｂと共に支持部３１が下方に回動し、図示しない規制部によってそれ以上の回動が規制された所定位置で下部膨張部２３の前面２３ａを支持する。
【００３２】
・ エアバッグ１６は全体が扁平状であればよく、テザー２０ａ〜２０ｃを用いずに、前記基布１６ａ，１６ｂ間に設けられた規制手段としてのシームによって全体を扁平状としてもよい。
【００３３】
・ 下部膨張部２３の下端が、フロアＦの上方に僅かに離れるようにしてもよい。
・ 前記一実施形態で、エアバッグモジュール１０は、前席１１の座部１２内に収容されてもよい。
【００３４】
【発明の効果】
各請求項に記載の発明によれば、後席乗員の膝下、主として足先を有効に保護することができる。
【図面の簡単な説明】
【図１】 本実施形態の後席用エアバッグ装置を示す模式図。
【図２】 後席用エアバッグ装置が設けられた前席と後席とを示す模式図。
【図３】 後席用エアバッグ装置を示す模式図。
【図４】 同じく模式背面図。
【図５】 展開膨張したエアバッグを示す模式背面図。
【図６】 他の実施形態の後席用エアバッグ装置を示す模式図。
【図７】 同じくエアバッグが展開した後席用エアバッグ装置を示す模式図。
【符号の説明】
１０…後席用エアバッグ装置としてのエアバッグモジュール、１１…前席、１２…座部、１３…ケース、１５…後席、１６…（後席用）エアバッグ、２０ａ〜２０ｃ…規制手段としてのテザー、２１…（前席の）背もたれ部、２２…上部膨張部、２３…膨張部としての下部膨張部、２３ａ…（下部膨張部の）前面、２４…支持部材としてのサポートガイド、３０…同じくサポートガイド、Ｆ…フロア。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rear seat airbag device that protects a region under the knee of a rear seat occupant when an impact due to a collision or the like is applied to a vehicle. In this specification, “front seat” means a seat with other seats behind, and is not limited to a driver seat and a passenger seat. Further, “rear seat” means a seat after “front seat”.
[0002]
[Prior art]
As a conventional rear seat airbag device of this type, there is one in which an airbag is deployed toward a rear seat occupant from an airbag module provided in a seat base frame of a front seat. The airbag is deployed upward along the back of the backrest behind the backrest of the front seat, and then deployed in front of the chest or head of the rear seat occupant (see Patent Document 1).
[0003]
[Patent Document 1]
JP 2002-542100 A [0004]
[Problems to be solved by the invention]
By the way, when the rear seat occupant does not wear the seat belt in the proper posture, the so-called submarine phenomenon, where the lower part of the rear seat occupant falls from the waist and moves forward in the event of a vehicle collision, The tip may enter the space between the seat of the front seat and the passenger compartment floor.
[0005]
On the other hand, in the rear seat airbag device described in Patent Document 1, the airbag deployed from the airbag module is deployed on the back side of the backrest portion of the front seat and on the chest or head of the rear seat occupant. As a result, it was not possible to protect the knees of the rear passengers, especially the toes.
[0006]
The present invention was made to solve the above problems, the rear-seat occupant below the knee, it is an primarily to provide a Rue airbag apparatus can be effectively protect the feet.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 is provided in a seat portion of a front seat, and an inflator that expands and inflates between a front seat and a rear seat and supplies gas into the airbag. A rear seat airbag device comprising a case that accommodates the airbag and the inflator and has an opening facing the rear seat side provided on a lower surface of the seat portion of the front seat, The gist of the invention is that the airbag is provided with an inflating portion that expands and inflates so as to close a space between the seat portion of the front seat and the floor .
[0008]
According to the first aspect of the present invention, the airbag, which is deployed and inflated between the seat portion of the front seat and the floor, effectively protects the knees of the rear seat occupant, mainly the toes .
[0009]
The invention according to 請 Motomeko 2, before provided on the seat of the seat, and a inflator for supplying gas before the airbag and the airbag is deployed and inflated between the seat and the rear seat Koseki The airbag device includes a case that houses the airbag and the inflator and that has an opening facing the rear seat side, and is provided on a lower surface of the seat portion of the front seat. The gist of the invention is that an upper inflating portion that expands and expands along the backrest portion of the front seat and a lower inflating portion that expands and inflates so as to close the space between the seat portion of the front seat and the floor are provided. Is.
[0010]
According to the invention described in claim 2 , the knee and the knee of the rear seat occupant are protected by the upper inflating portion that expands and inflates along the backrest portion of the front seat, and between the seat portion of the front seat and the floor. The lower inflatable portion that expands and inflates so as to close the space effectively protects the knees of the rear seat occupant, mainly the toes.
[0011]
The gist of a third aspect of the invention is that, in the second aspect of the invention, the lower inflatable portion is configured to come into contact with the floor when the lower inflated portion is expanded and inflated .
According to the invention described in claim 3 , in addition to the action of the invention described in claim 2 , the space between the seat portion of the front seat and the floor can be reliably closed, and the lower inflating portion and the floor The upper inflatable part can be expanded upward along the backrest part of the front seat using the contact with the reaction force as a reaction force.
[0012]
According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the airbag has a flat shape when the airbag is deployed and inflated. The gist is that a regulating means for regulating is provided .
According to the invention described in claim 4 , in addition to the action of the invention described in any one of claims 1 to 3 , the entire airbag is deployed and inflated flat by the regulating means. However, the lower knee of the rear seat occupant is not strongly pressed, and the space between the lower knee and the front seat is buried to effectively protect the lower knee.
[0013]
The invention of claim 5 is the invention according to any one of claims 1 to 4, a support member for supporting the front of the airbag between the seat and the floor of the front seat is provided It is the gist of what is being done.
[0014]
According to the invention described in claim 5 , in addition to the operation of the invention described in any one of claims 1 to 4, the front surface of the airbag is supported between the seat portion of the front seat and the floor. because they are supported by the member it can be expanded and inflated the airbags so as substantially upward. Therefore, since the airbag can be deployed and inflated along the back surface of the backrest portion of the front seat, it is possible to effectively protect the knees of the rear seat occupant. In addition, the support member prevents the airbag from moving forward in the space between the front seat portion and the floor, thereby protecting the toes more effectively.
[0015]
The invention of claim 6 is the invention according to claim 5, in which before Symbol supporting member is summarized in that provided in the casing.
[0016]
According to the invention described in claim 6 , in addition to the operation of the invention described in claim 5 , since the support member is provided in the case , the assembly to the vehicle is facilitated.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments embodying the present invention will be described with reference to FIGS.
As shown in FIG. 2, the airbag module 10 as an airbag apparatus is being fixed to the lower surface of the seat part 12 of the front seat 11 in a vehicle.
[0018]
As shown in FIG. 3, the airbag module 10 includes a case 13 fixed to a seat portion 12, an inflator 14 accommodated in the case 13, and a gas that is accommodated in the case 13 and supplied by the inflator 14. And the rear seat 15 are provided with an airbag 16 that is deployed and inflated.
[0019]
As shown in FIG. 4, the case 13 has an opening 17 facing toward the rear seat 15, and the airbag 16 in a folded state is deployed from the opening 17 toward the rear seat 15. The opening 17 is closed by an upper lid portion 19a and a lower lid portion 19b that are separated by the tear lines 18a and 18b and opened up and down when the airbag 16 is deployed.
[0020]
As shown in FIGS. 1 and 5, the airbag 16 includes tethers 20 a, 20 b, and 20 c as regulating means provided between the front base fabric 16 a and the rear base fabric 16 b in the interior thereof. The whole is flat and expands and expands into a substantially square shape when viewed in the front-rear direction. The airbag 16 is deployed and inflated along the backrest portion 21 of the front seat 11, and an upper inflatable portion 22 disposed between the backrest portion 21 and the knees N of the rear seat occupant, and the seat portion 12 of the front seat 11. And a lower inflating part 23 as an inflating part that closes and expands the space between the seat part 12 and the floor F.
[0021]
As shown in FIGS. 3 and 4, a support guide 24 is provided on the lower surface of the case 13 as a support member that guides and supports the airbag 16 so that the airbag 16 is expanded and inflated in a predetermined direction. . As shown in FIG. 1, the support guide 24 extends obliquely downward and rearward from the lower side of the opening 17 of the case 13 between the seat 12 of the front seat 11 and the floor F when the airbag 16 is deployed and inflated. A support portion 25 is provided, and the support portion 25 supports the front surface 23 a of the lower inflating portion 23 of the airbag 16.
[0022]
Next, the operation of the present embodiment configured as described above will be described.
When the inflator 14 is activated based on the impact applied to the vehicle and gas is supplied to the airbag 16, the airbag 16 jumps out of the opening 17 of the case 13 and deploys between the seat 12 of the front seat 11. It expands.
[0023]
At this time, the lower inflating portion 23 expands and inflates so as to close the space between the seat portion 12 and the floor F, and is supported between the seat portion 12 and the floor F by the support portion 25 of the support guide 24. For this reason, as shown in FIG. 1, the expansion | deployment direction of the upper expansion part 22 is controlled, and as shown with a dashed-two dotted line and the arrow, it expand | deploys substantially upwards. Therefore, the upper inflating part 22 is developed so as to be along the back surface 22 a of the backrest part 21 of the front seat 11.
[0024]
When the airbag 16 has been deployed and inflated, the upper inflatable portion 22 is disposed between the backrest portion 21 of the front seat 11 and the knees and below the knees N of the rear seat occupant. The space between the seat 12 and the floor F is closed. Therefore, in the rear seat occupant, the knee and the knee N are protected by the upper inflating portion 22, and the toe L is protected by the lower inflating portion 23.
[0025]
Next, effects of the present embodiment described in detail above will be listed.
(1) The upper inflatable portion 22 that extends upward along the backrest portion 21 of the front seat 11 effectively protects the knee and the knee N of the rear seat occupant and prevents the rear seat occupant from moving forward. Submarine phenomenon can be prevented.
[0026]
(2) The lower inflating portion 23 that expands and inflates in the space between the front seat 11 and the rear seat 15 prevents the foot tip L from entering below the seat portion 12 and effectively protects the foot tip L. Is done.
[0027]
(3) The airbag 16 is expanded and inflated so that the entire airbag 16 is flattened by the tethers 20a to 20c (regulating means) provided therein. For this reason, the airbag 16 does not strongly press the lower knee N of the rear seat occupant, and the knee and the lower knee N are effectively protected by filling the space between the lower knee N and the front seat 11.
[0028]
(4) Since the support guide (support member) 24 supports the front surface 23a of the lower inflating portion 23 of the airbag 16 between the seat portion 12 of the front seat 11 and the floor F, the upper inflating portion 22 is substantially upward. While expanding and inflating toward the front, the forward movement of the lower inflating portion 23 is prevented. Therefore, it is possible to effectively protect the knees and below the knees N of the rear seat occupant, and to effectively protect the toes L by preventing the feet L from getting in the downward direction of the seat 12.
[0029]
(5) The support guide 24 is provided in the case 13 of the airbag module 10 fixed to the lower surface of the seat 12 of the front seat 11. Therefore, since the support guide 24 can be provided together with the airbag module 10, the assembly to the vehicle is facilitated.
[0030]
Next, embodiments other than the one embodiment will be listed.
The supporting member for supporting the lower inflating portion 23 only needs to support the front surface 23a of the lower inflating portion 23 in the space between the seat portion 12 of the front seat 11 and the floor F. It may be provided separately and fixed on the floor F, for example.
[0031]
The support member may be, for example, a support guide 32 having a support portion 31 that can turn up and down via a shaft 30 on the opening 17 side, as shown in FIG. When the airbag 16 is deployed and inflated, as shown in FIG. 7, the support portion 31 is rotated downward together with the lower lid portion 19b, and at a predetermined position where further rotation is restricted by a restriction portion (not shown). The front surface 23a of the lower inflating part 23 is supported.
[0032]
The airbag 16 may be flat as a whole, and may be flattened by a seam as a regulating means provided between the base fabrics 16a and 16b without using the tethers 20a to 20c.
[0033]
-You may make it the lower end of the lower expansion part 23 leave | separate slightly above the floor F. FIG.
In the embodiment, the airbag module 10 may be accommodated in the seat portion 12 of the front seat 11.
[0034]
【The invention's effect】
According to the invention described in each claim, it is possible to effectively protect the knees of the rear seat occupant, mainly the toes.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an airbag device for a rear seat according to the present embodiment.
FIG. 2 is a schematic view showing a front seat and a rear seat provided with a rear seat airbag device.
FIG. 3 is a schematic view showing a rear seat airbag device.
FIG. 4 is a schematic rear view of the same.
FIG. 5 is a schematic rear view showing the airbag inflated and inflated.
FIG. 6 is a schematic diagram showing a rear seat airbag device according to another embodiment.
FIG. 7 is a schematic view showing a rear seat airbag device in which the airbag is also deployed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Airbag module as a backseat airbag apparatus, 11 ... Front seat, 12 ... Seat part, 13 ... Case, 15 ... Rear seat, 16 ... (Back seat) airbag, 20a-20c ... As a control means 21 ... a backrest part of the front seat, 22 ... an upper inflating part, 23 ... a lower inflating part as an inflating part, 23a ... a front surface (of the lower inflating part), 24 ... a support guide as a support member, 30 ... Also support guide, F ... floor.

Claims (6)

前席の座部に設けられ、前席と後席との間において展開膨張するエアバッグと該エアバッグ内にガスを供給するインフレータとを備えた後席用エアバッグ装置であって、
前記エアバッグ及び前記インフレータを収容するとともに前記後席側に向いた開口部を有するケースが前記前席の座部の下面に設けられ、
前記エアバッグには、前記前席の座部とフロアとの間の空間を塞ぐように展開膨張する膨張部が設けられていることを特徴とする後席用エアバッグ装置。 A rear seat airbag device including an airbag that is provided at a seat portion of the front seat and that is deployed and inflated between the front seat and the rear seat, and an inflator that supplies gas into the airbag,
A case containing the airbag and the inflator and having an opening facing the rear seat side is provided on the lower surface of the seat portion of the front seat,
The airbag device for a rear seat, wherein the airbag is provided with an inflating portion that expands and inflates so as to close a space between the seat portion of the front seat and the floor . 前席の座部に設けられ、前席と後席との間において展開膨張するエアバッグと該エアバッグ内にガスを供給するインフレータとを備えた後席用エアバッグ装置であって、
前記エアバッグ及び前記インフレータを収容するとともに前記後席側に向いた開口部を有するケースが前記前席の座部の下面に設けられ、
前記エアバッグには、前記前席の背もたれ部に沿って展開膨張する上部膨張部と、前記前席の座部とフロアとの間の空間を塞ぐように展開膨張する下部膨張部とが設けられていることを特徴とする後席用エアバッグ装置。 A rear seat airbag device including an airbag that is provided at a seat portion of the front seat and that is deployed and inflated between the front seat and the rear seat, and an inflator that supplies gas into the airbag,
A case containing the airbag and the inflator and having an opening facing the rear seat side is provided on the lower surface of the seat portion of the front seat,
The airbag is provided with an upper inflating portion that is deployed and inflated along a backrest portion of the front seat, and a lower inflating portion that is deployed and inflated so as to close a space between the seat portion and the floor of the front seat. seat airbag device after that, characterized in that is. 前記下部膨張部は、展開膨張した際にフロアに接触するように構成されていることを特徴とする請求項２に記載の後席用エアバッグ装置。 The rear seat airbag device according to claim 2, wherein the lower inflatable portion is configured to come into contact with a floor when the inflated portion is inflated . 前記エアバッグには、該エアバッグが展開膨張する際に全体が扁平状に展開膨張するように規制する規制手段が設けられていることを特徴とする請求項１〜請求項３のいずれか一項に記載の後席用エアバッグ装置。 The said airbag is provided with the control means which controls so that when the airbag expand | deploys and inflates, the whole expands and inflates flatly, The any one of Claims 1-3 characterized by the above-mentioned. The airbag apparatus for rear seats as described in a term . 前記前席の座部とフロアとの間においてエアバッグの前面を支持する支持部材が設けられていることを特徴とする請求項１〜請求項４のいずれか一項に記載の後席用エアバッグ装置。 The back seat air according to any one of claims 1 to 4, wherein a support member for supporting a front surface of the airbag is provided between the seat portion of the front seat and the floor. Bag device . 前記支持部材が前記ケースに設けられていることを特徴とする請求項５に記載の後席用エアバッグ装置。 The rear seat airbag device according to claim 5, wherein the support member is provided in the case .
JP2003086041A 2003-03-26 2003-03-26 Rear seat airbag device Expired - Fee Related JP4180415B2 (en)

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Cited By (3)

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KR20150118060A (en) * 2015-09-24 2015-10-21 아우토리브 디벨롭먼트 아베 Low mounting type knee airbag module for passanger seat
US20170174172A1 (en) * 2014-02-12 2017-06-22 Daimler Ag Passenger protection device for a vehicle, and vehicle
US20220212622A1 (en) * 2019-05-14 2022-07-07 ZF Passive Safety Systems US Inc. Apparatus and method for floor-mounted passenger lower leg protection

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JP2007230357A (en) * 2006-02-28 2007-09-13 Nippon Plast Co Ltd Airbag and airbag device
KR100783910B1 (en) 2006-12-04 2007-12-10 현대자동차주식회사 Rear passenger's protecting air bag system
DE102009055837A1 (en) * 2009-11-26 2011-06-01 GM Global Technology Operations LLC, ( n. d. Ges. d. Staates Delaware ), Detroit Safety device for arrangement within floor space of motor vehicle for alternative protection of passenger in case of vehicle collision, has airbag formed in inflated condition such that airbag protects feet and legs of passenger
KR101720980B1 (en) * 2011-06-21 2017-03-29 현대모비스 주식회사 Knee airbag apparatus
FR3082473B1 (en) * 2018-06-13 2020-08-21 Psa Automobiles Sa PROTECTIVE DEVICE FOR A VEHICLE SEAT, WITH AN INFLATABLE BAG PROTECTING THE FRONT PART OF THE PASSENGER'S LEGS
US11305717B2 (en) * 2020-01-27 2022-04-19 Toyoda Gosei Co., Ltd. Knee protection airbag apparatus

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US20170174172A1 (en) * 2014-02-12 2017-06-22 Daimler Ag Passenger protection device for a vehicle, and vehicle
US9896056B2 (en) * 2014-02-12 2018-02-20 Daimler Ag Passenger protection device for a vehicle, and vehicle
KR20150118060A (en) * 2015-09-24 2015-10-21 아우토리브 디벨롭먼트 아베 Low mounting type knee airbag module for passanger seat
US20220212622A1 (en) * 2019-05-14 2022-07-07 ZF Passive Safety Systems US Inc. Apparatus and method for floor-mounted passenger lower leg protection
US11897409B2 (en) * 2019-05-14 2024-02-13 ZF Passive Safety Systems US Inc. Apparatus and method for floor-mounted passenger lower leg protection

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