JP2020100377A - Pedestrian airbag - Google Patents

Pedestrian airbag Download PDF

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JP2020100377A
JP2020100377A JP2018241681A JP2018241681A JP2020100377A JP 2020100377 A JP2020100377 A JP 2020100377A JP 2018241681 A JP2018241681 A JP 2018241681A JP 2018241681 A JP2018241681 A JP 2018241681A JP 2020100377 A JP2020100377 A JP 2020100377A
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tether
airbag
cowl cover
pedestrian
cowl
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JP7022347B2 (en
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誠 尾関
Makoto Ozeki
誠 尾関
崇至 佐々木
Takashi Sasaki
崇至 佐々木
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Toyoda Gosei Co Ltd
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Abstract

To provide a pedestrian airbag which can secure a sufficient receiving stroke without narrowing a protection area above a cowl.SOLUTION: An airbag device includes a cowl cover part 25 which covers an area ranging from a rear end part 12a of a hood panel 12 to the upper side of a cowl 8 at the upper surface side near a front end part 4a of a front windshield 4 after completion of inflation. In the cowl cover part 25, a lateral tether 40 disposed in a belt-like form along a lateral direction is disposed so as to connect an upper wall part 25a with a lower wall part 25b after the completion of the inflation. Further, a rear tether 55 which couples to the lateral tether at a front end 55a and couples to the rear part 20b side of the cowl cover part 25 after the completion of the inflation at a rear end 55b to inhibit rearward protruding of the rear part side of the cowl cover part is disposed.SELECTED DRAWING: Figure 2

Description

本発明は、車両に搭載される歩行者用エアバッグ装置に使用されて、車両と接触する歩行者を保護するように膨張する歩行者用エアバッグに関する。 The present invention relates to a pedestrian airbag that is used in a pedestrian airbag device mounted on a vehicle and inflates so as to protect a pedestrian in contact with the vehicle.

従来、歩行者用エアバッグでは、膨張完了時に、フードパネルの後端部からフロントウインドシールドの前端部付近の上面側のカウルの上方側を覆うカウルカバー部、を備えて構成されていた(例えば、特許文献1参照)。カウルカバー部には、左右方向に沿って断続的に、上壁部と下壁部とを結合する横テザーが配設されていた。カウルカバー部は、横テザーにより、前後方向の領域において、断面形状を円形にすること無く、厚さ寸法を略一定とするような膨張部位を配設させていた。 Conventionally, a pedestrian airbag is configured to include a cowl cover portion that covers the upper side of the cowl on the upper surface side near the front end portion of the front windshield from the rear end portion of the hood panel when the inflation is completed (for example, , Patent Document 1). In the cowl cover portion, lateral tethers that connect the upper wall portion and the lower wall portion are arranged intermittently along the left-right direction. In the cowl cover portion, an inflated portion having a substantially constant thickness dimension is provided by a lateral tether in a region in the front-rear direction without making the cross-sectional shape circular.

特開2008−273250号公報JP, 2008-273250, A

しかし、従来の歩行者用エアバッグでは、上壁部と下壁部とを連結する横テザーにより、カウルカバー部における前後方向の中央部位の高さを抑えていることから、前後方向に沿った領域において、所定の厚さ寸法に維持できるものの、厚さ寸法を抑えていることから、カウルカバー部に対して、歩行者が強い押圧力で下向きに侵入する場合には、逆に、十分な受止ストロークを確保できずに、カウルカバー部の上壁部が下壁部に接触するような、所謂、底付きするような事態を招く虞れがある。勿論、厚さ寸法を大きくして、断面を円形状とするようにすれば、受止ストロークを確保できるものの、前後方向の幅寸法を確保し難く、すなわち、カウルの上方の保護エリアを狭めてしまい、望ましくない。 However, in the conventional airbag for pedestrians, the lateral tether that connects the upper wall portion and the lower wall portion suppresses the height of the central portion of the cowl cover portion in the front-rear direction. In the area, although the thickness can be maintained to a predetermined value, the thickness is suppressed, so if a pedestrian invades downwards to the cowl cover with a strong pressing force, on the contrary, sufficient There is a possibility that a situation in which the upper wall portion of the cowl cover portion comes into contact with the lower wall portion, that is, so-called bottoming occurs, cannot secure a receiving stroke. Of course, if the thickness dimension is increased so that the cross section is circular, the receiving stroke can be secured, but it is difficult to secure the width dimension in the front-rear direction, that is, the protection area above the cowl is narrowed. It is not desirable.

本発明は、上述の課題を解決するものであり、カウルの上方の保護エリアを狭めることなく、十分な受止ストロークを確保できる歩行者用エアバッグを提供することを目的とする。 The present invention solves the above-mentioned problems, and an object of the present invention is to provide a pedestrian airbag that can secure a sufficient receiving stroke without narrowing the protective area above the cowl.

本発明に係る歩行者用エアバッグでは、膨張完了時に、フードパネルの後端部からフロントウインドシールドの前端部付近の上面側のカウルの上方側を覆うカウルカバー部、を備えて構成される歩行者用エアバッグであって、
前記カウルカバー部内に、
膨張完了時の上壁部と下壁部とを連結するように、左右方向に沿って帯状に配設される横テザーが、配設されるとともに、
該横テザーに、前端を結合させ、後端を、膨張完了時の前記カウルカバー部の後部側に結合させて、前記カウルカバー部における後部側の後方側への突出を抑制する後側テザーが、配設されていることを特徴とする。
In the pedestrian airbag according to the present invention, when the inflation is completed, the walking including a cowl cover portion covering the upper side of the cowl on the upper surface side near the front end portion of the front windshield from the rear end portion of the hood panel. Airbag for passengers,
In the cowl cover part,
A lateral tether, which is arranged in a strip shape along the left-right direction, is arranged so as to connect the upper wall portion and the lower wall portion when the expansion is completed,
A front tether is joined to the lateral tether, and a rear end is joined to a rear portion side of the cowl cover portion at the time of completion of expansion, and a rear tether for suppressing rearward protrusion of the rear portion side of the cowl cover portion is provided. , Are provided.

本発明に係る歩行者用エアバッグでは、膨張完了後のカウルカバー部の後部側に対して、上方から歩行者が進入してくると、上壁部が下壁部に接近するように下方移動しつつ、後部側を後方側へ突出させようとする。しかし、カウルカバー部におけるカウルの上方を覆う後部側は、前端側を横テザーに結合させた後側テザーの後端が、結合されており、その後部側の後方への突出が、後側テザーにより抑制される。そのため、カウルカバー部は、内圧を確保した状態で、厚さ寸法の低下を抑制して、歩行者を受け止めることができ、底付きすること無く、十分な受止ストロークを確保して、歩行者を受け止めて保護することができる。そして勿論、カウルカバー部は、上壁部と下壁部とを連結する横テザーを配設させていることから、膨張時の上方への突出高さを抑えて、十分な厚さ寸法を維持した状態で、前後方向の幅寸法を広げる構成であり、カウルの上方の保護エリアを狭めない。 In the airbag for pedestrians according to the present invention, when a pedestrian enters from the upper side with respect to the rear side of the cowl cover portion after completion of the inflation, the upper wall portion moves downward so as to approach the lower wall portion. At the same time, the rear side tries to protrude rearward. However, the rear side of the cowl cover that covers the upper side of the cowl is connected to the rear end of the rear tether whose front end is connected to the lateral tether, and the rearward protrusion of the rear part of the rear tether Is suppressed by. Therefore, the cowl cover part can prevent the pedestrian from receiving a decrease in the thickness dimension while ensuring the internal pressure, and can secure a sufficient receiving stroke without bottoming to ensure the pedestrian's ability. You can catch and protect. And, of course, the cowl cover has a horizontal tether that connects the upper wall and the lower wall, so that it suppresses the protruding height upward when inflated and maintains a sufficient thickness dimension. In this state, the width dimension in the front-rear direction is widened so that the protection area above the cowl is not narrowed.

したがって、本発明に係る歩行者用エアバッグでは、カウルの上方の保護エリアを狭めることなく、十分な受止ストロークを確保することができる。 Therefore, in the pedestrian airbag according to the present invention, it is possible to secure a sufficient receiving stroke without narrowing the protection area above the cowl.

また、後側テザーは、後端をカウルカバー部の後部側の周壁に結合させているものの、前端を、カウルカバー部の周壁で無く、横テザーに連結させていることから、エアバッグの折畳時におけるカウルカバー部の上壁部と下壁部とを平らに展開させて重ねる際、後側テザーの前端の横テザーとの結合部付近を後方側に突き出すように折り曲げれば、後側テザーを平らに展開させておくことが可能となって、エアバッグの折畳時におけるカウルカバー部の上壁部と下壁部とを平らに展開させる形態を確保しやすい。 Also, the rear tether has its rear end joined to the peripheral wall on the rear side of the cowl cover, but since the front end is connected not to the peripheral wall of the cowl cover but to the lateral tether, the airbag tether is not folded. When flattening the upper and lower walls of the cowl cover during tatami mating and stacking them, bend the rear tether so that the area near the front tether joining with the horizontal tether protrudes rearward. It is possible to flatten the tether, and it is easy to secure a form in which the upper wall portion and the lower wall portion of the cowl cover portion are flattened when the airbag is folded.

そして、本発明に係る歩行者用エアバッグでは、前記後側テザーが、後端を、前記カウルカバー部における前記上壁部側に結合させて、配設されていることが望ましい。 Further, in the pedestrian airbag according to the present invention, it is desirable that the rear tether is disposed with its rear end being joined to the upper wall portion side of the cowl cover portion.

このような構成では、後側テザーの後端が下壁部側に結合されている場合に比べて、横テザーの上端から後側テザーの後端側の結合される上壁部の部位までのカウルカバー部における前後方向の周壁の長さ寸法が、短くなる。そして、この横テザーの上端から後側テザーの後端側の結合される上壁部の部位までのカウルカバー部における前後方向の周壁は、歩行者受止時に、カウルカバー部の後部側が後方へ突出する際に、膨らもうとするエリアであり、その長さ寸法が短いことから、膨らみを小さくできて、後部側の後方側への突出を好適に抑制できる。そのため、カウルカバー部が、内圧を維持した状態で、厚さ寸法の低下を抑制でき、十分な受止ストロークを確保して、的確に、歩行者を受け止めることができる。 In such a configuration, as compared with the case where the rear end of the rear tether is connected to the lower wall portion side, from the upper end of the horizontal tether to the upper wall portion of the rear tether rear end side to be combined. The length dimension of the peripheral wall of the cowl cover in the front-rear direction is shortened. Then, the peripheral wall in the front-rear direction of the cowl cover portion from the upper end of the lateral tether to the portion of the upper wall portion on the rear end side of the rear tether to be joined is such that the rear portion of the cowl cover portion is rearward when the pedestrian is received. This is an area that is about to swell when projecting, and since the length dimension is short, it is possible to reduce the bulge and suitably suppress rearward rearward projection. Therefore, the cowl cover portion can suppress the reduction in the thickness dimension while maintaining the internal pressure, secure a sufficient receiving stroke, and accurately receive the pedestrian.

また、本発明に係る歩行者用エアバッグでは、前記後側テザーが、膨張完了時における歩行者の進入方向に対して、略直交する方向に配設される状態を維持して、前端を、前記横テザーの上下端から離れた中間領域に、結合させて、配設されていることが望ましい。 Further, in the pedestrian airbag according to the present invention, the rear tether maintains a state in which the rear tether is arranged in a direction substantially orthogonal to the approach direction of the pedestrian at the time of completion of inflation, and the front end is It is desirable that the lateral tether is disposed so as to be coupled to an intermediate region apart from the upper and lower ends of the lateral tether.

このような構成では、歩行者の進入時に、カウルカバー部の後部側が突出しようとする方向が、進入方向に対して略直交する方向であり、その方向に略沿うように、後側テザーが配設されていることから、後部側の後方側への突出を的確に規制できて、カウルカバー部は、内圧を維持した状態で、好適に、十分な受止ストロークを確保して、歩行者を受け止めることができる。 In such a configuration, when the pedestrian enters, the direction in which the rear side of the cowl cover part is projected is a direction substantially orthogonal to the entering direction, and the rear tether is arranged so as to substantially follow the direction. Since it is provided, it is possible to accurately regulate the rearward projection of the rear side, and the cowl cover portion preferably secures a sufficient receiving stroke and maintains a pedestrian while maintaining the internal pressure. You can take it.

この場合、膨張完了時の外周壁が、外形形状を略同形とした前記上壁部を含めた上側パネルと、前記下壁部を含めた下側パネルと、から構成されていれば、折畳時の初期状態として、前記上側パネルと前記下側パネルとを、平らに展開させつつ重ねるとともに、折目を後方に突き出して、上端側を下端側に接近させるように、前記横テザーを二つ折りする状態とする構成として、
折畳時の初期状態の前記後側テザーが、前端を、二つ折りされる前記横テザーの前記折目近傍に結合させ、後端を前記上側パネルに結合させた状態で、かつ、平らな状態となるように、前記後側テザーの前後方向の長さ寸法が、設定されていることが望ましい。
In this case, if the outer peripheral wall at the time of completion of expansion is composed of an upper panel including the upper wall portion having a substantially same outer shape and a lower panel including the lower wall portion, the folding is possible. As an initial state of time, the upper panel and the lower panel are laid flat while unfolding, and the lateral tether is folded in two so that the folds are projected rearward and the upper end side approaches the lower end side. As a configuration for setting
In the initial state when folded, the rear tether has its front end joined to the vicinity of the fold of the lateral tether to be folded in half, and its rear end joined to the upper panel, and is in a flat state. Therefore, it is preferable that the length dimension of the rear tether in the front-rear direction is set.

このような構成では、エアバッグの折畳時の初期状態で、後側テザーを、平らに展開した下側パネルと上側パネルとの間で、二つ折りされた横テザーの折目から平らに展開させた状態で、嵩張らせずに、配設させることができて、その後のエアバッグの折り畳みを、嵩張らせずに、コンパクトに折り畳むことができる。さらに、後側テザーは、前端を、横テザーの後方に突き出された折目近傍に結合させて、カウルカバー部の後縁側に接近させる構成であって、嵩張らずに平らに展開できる範囲内で、前後方向の長さ寸法を最も短くできる。そのため、エアバッグの膨張時には、前後方向の長さ寸法を短くできた後側テザーは、後端を連結させた結合部位におけるカウルカバー部の後部側を、大きな引張力として、前方へ引っ張ることができる。その結果、歩行者の進入時において、カウルカバー部の後部側が、一層、後方側への突出を規制されて、カウルカバー部は、内圧を維持した状態で、厚さ寸法の低下を抑制でき、十分な受止ストロークとして、歩行者を受け止めることができる。 With such a configuration, in the initial state when the airbag is folded, the rear tether is flatly deployed from the fold of the horizontal tether folded in between the flat lower panel and the upper panel. In this state, the airbag can be arranged without being bulky, and the subsequent folding of the airbag can be compactly folded without being bulky. Further, the rear tether has a structure in which the front end is connected to the vicinity of the fold protruding to the rear of the lateral tether to approach the rear edge side of the cowl cover portion, and within a range that can be flatly deployed without being bulky. The length dimension in the front-back direction can be minimized. Therefore, when the airbag is inflated, the rear tether, which can reduce the length in the front-rear direction, can pull the rear side of the cowl cover portion at the joint portion connecting the rear ends forward with a large pulling force. it can. As a result, when a pedestrian enters, the rear side of the cowl cover part is further restricted from projecting rearward, and the cowl cover part can suppress a decrease in thickness while maintaining the internal pressure, A pedestrian can be received with a sufficient receiving stroke.

また、本発明に係る歩行者用エアバッグでは、前記カウルカバー部内における前記横テザーの前方側の部位に、
前記上壁部と前記下壁部とを連結するように、左右方向に沿った帯状に配設される第2横テザーが、配設されるとともに、
後端を前記第2横テザーに結合させ、前端を膨張完了時の前記カウルカバー部の前部側に結合させて、前記カウルカバー部における前部側の前方側への突出を抑制する前側テザーが、配設されていてもよい。
Further, in the pedestrian airbag according to the present invention, a portion on the front side of the lateral tether in the cowl cover portion,
A second horizontal tether, which is arranged in a strip shape along the left-right direction, is provided so as to connect the upper wall portion and the lower wall portion, and
A front tether that connects a rear end to the second lateral tether and connects a front end to a front side of the cowl cover when the expansion is completed to suppress the frontward protrusion of the front side of the cowl cover. However, it may be provided.

このような構成では、カウルカバー部の横テザーの前部側においても、後端側を第2横テザーに結合させた前側テザーの前端が、結合されており、その前部側の前方への突出が、前側テザーにより抑制される。そのため、カウルカバー部の前部側で歩行者を受け止めることとなっても、内圧を維持した状態で、厚さ寸法の低下を抑制して、歩行者を受け止めることができて、底付きすること無く、十分な受止ストロークを確保して、歩行者を受け止めて保護することができる。 In such a configuration, even on the front side of the lateral tether of the cowl cover part, the front end of the front tether in which the rear end side is connected to the second horizontal tether is connected, and the front side of the front side The protrusion is suppressed by the front tether. Therefore, even if the front side of the cowl cover catches a pedestrian, it is possible to prevent the pedestrian from falling while suppressing the decrease in thickness while maintaining the internal pressure. Without, it is possible to secure a sufficient receiving stroke and receive and protect a pedestrian.

本発明の第1実施形態である歩行者用エアバッグが使用される歩行者用エアバッグ装置を搭載させた車両の概略部分平面図である。FIG. 1 is a schematic partial plan view of a vehicle equipped with a pedestrian airbag device in which the pedestrian airbag according to the first embodiment of the present invention is used. 第1実施形態の歩行者用エアバッグ装置の作動時の概略縦断面図であり、図1のII−II部位に対応する。FIG. 2 is a schematic vertical cross-sectional view of the pedestrian airbag device of the first embodiment during operation, and corresponds to a II-II part in FIG. 1. 第1実施形態の歩行者用エアバッグを平らに展開した状態の平面図である。It is a top view of the state where the pedestrian airbag of the first embodiment was flatly deployed. 第1実施形態の歩行者用エアバッグにおける上側パネルと横テザーの上部側とを省いた概略平面図である。It is a schematic plan view which abbreviate|omitted the upper side panel and the upper side of a horizontal tether in the pedestrian airbag of 1st Embodiment. 第1実施形態の歩行者用エアバッグを平らに展開した状態の底面図である。It is a bottom view of the state where the pedestrian airbag of the first embodiment was flatly deployed. 第1実施形態の歩行者用エアバッグの構成材料を示す平面図である。It is a top view which shows the constituent material of the airbag for pedestrians of 1st Embodiment. 第1実施形態の歩行者用エアバッグの折畳工程を説明する図である。It is a figure explaining the folding process of the pedestrian airbag of 1st Embodiment. 第1実施形態の歩行者用エアバッグの折畳時における初期状態を示す概略断面図であり、図7のVIII−VIII部位に対応する。It is a schematic sectional drawing which shows the initial state at the time of folding of the pedestrian airbag of 1st Embodiment, and respond|corresponds to the VIII-VIII site|part of FIG. 第1実施形態の歩行者用エアバッグが、膨張完了後に、歩行者を受け止める状態を説明する図である。It is a figure explaining the state where the pedestrian airbag of 1st Embodiment receives a pedestrian after completion|finish of inflation. 第2実施形態の歩行者用エアバッグを使用した歩行者用エアバッグ装置の作動時を示す概略縦断面図である。It is a schematic longitudinal cross-sectional view which shows the time of operation of the pedestrian airbag device using the pedestrian airbag of the second embodiment. 第3実施形態の歩行者用エアバッグを使用した歩行者用エアバッグ装置の作動時を示す概略縦断面図である。It is a schematic longitudinal cross-sectional view which shows the time of operation of the pedestrian airbag device using the pedestrian airbag of the third embodiment. 第3実施形態の歩行者用エアバッグの膨張時の概略平面図である。It is a schematic plan view at the time of inflation of the pedestrian airbag of the third embodiment. 第3実施形態の歩行者用エアバッグの膨張時における横テザーと第2横テザーとを示す概略斜視図である。It is a schematic perspective view which shows the horizontal tether and the 2nd horizontal tether at the time of expansion|swelling of the pedestrian airbag of 3rd Embodiment.

以下、本発明の第1実施形態の歩行者用エアバッグ20を図面に基づいて説明すると、第1実施形態の歩行者用エアバッグ20は、図1,2に示すように歩行者用エアバッグ装置Mに使用されるものである。エアバッグ装置Mは、車両Vのフードパネル12の後端部12a付近のエンジンルームER側に搭載されて、エアバッグ20と、エアバッグ20に膨張用ガスを供給するインフレーター17と、折り畳んだエアバッグ20を収納するケース14と、ケース14の開口14cを覆うエアバッグカバー16と、を備えて構成されている。 Hereinafter, the pedestrian airbag 20 according to the first embodiment of the present invention will be described with reference to the drawings. The pedestrian airbag 20 according to the first embodiment is as shown in FIGS. It is used for the device M. The airbag device M is mounted on the engine room ER side near the rear end portion 12a of the hood panel 12 of the vehicle V, and includes an airbag 20, an inflator 17 that supplies inflation gas to the airbag 20, and a folded air bag. It is configured to include a case 14 that stores the bag 20 and an airbag cover 16 that covers the opening 14c of the case 14.

なお、本明細書では、特に断らない限り、前後、上下、及び、左右の方向は、それぞれ、車両Vの前後、上下、及び、左右の方向と一致させて、説明する。 In addition, in the present specification, unless otherwise specified, the front-rear direction, the up-down direction, and the left-right direction will be described in accordance with the front-rear direction, the up-down direction, and the left-right direction of the vehicle V, respectively.

エアバッグ装置Mのケース14は、金属製(板金製)として、車両Vのボディ1側のフードリッジリインホースから延びるフランジ等に対して、固定されている。ケース14は、膨張時のエアバッグ20を突出させるための開口14cを上方に備えた略直方体の箱形状として、車両Vの左右方向に沿って延びた長方形板状の底壁部14aと、底壁部14aの外周縁から上方に延びる略四角筒形状の周壁部14bとを備えて構成されている。なお、ケース14は、フロントウインドシールド(フロントガラスとも言う)4の前端部4a側の下方から前方に延びるカウル8の前方側における上側位置に、搭載されている。また、図1に示す符号10の部材は、ワイパである。カウル8は、剛性の高いカウルパネル8aと、カウルパネル8aより剛性の低いカウルルーバ8bと、を備えて構成されている。 The case 14 of the airbag apparatus M is made of metal (made of sheet metal), and is fixed to a flange or the like extending from the hood ridge rein hose on the body 1 side of the vehicle V. The case 14 has a substantially rectangular parallelepiped box shape having an opening 14c for allowing the airbag 20 to protrude when inflated, and has a rectangular plate-shaped bottom wall 14a extending along the left-right direction of the vehicle V and a bottom. A peripheral wall portion 14b having a substantially rectangular tube shape extending upward from the outer peripheral edge of the wall portion 14a is provided. The case 14 is mounted at an upper position on the front side of the cowl 8 that extends forward from below the front end portion 4a side of the windshield (also referred to as windshield) 4. Further, the member of reference numeral 10 shown in FIG. 1 is a wiper. The cowl 8 includes a cowl panel 8a having high rigidity and a cowl louver 8b having rigidity lower than that of the cowl panel 8a.

インフレーター17は、図2に示すように、車両Vの左右方向に沿って軸方向を配置させた円柱状として、左端側に、膨張用ガスを吐出する図示しないガス吐出部を配設させている。インフレーター17は、複数(実施形態では3個)のボルト17aを下方へ突設させており、ボルト17aをケース14の底壁部14aから下方へ突設させて、ナット18を締結することにより、ケース14の底壁部14aに固定されている。 As shown in FIG. 2, the inflator 17 has a cylindrical shape in which the axial direction is arranged along the left-right direction of the vehicle V, and a gas discharge portion (not shown) for discharging the inflation gas is arranged on the left end side. .. The inflator 17 has a plurality of (three in the embodiment) bolts 17a projecting downward, and the bolts 17a projecting downward from the bottom wall portion 14a of the case 14 by fastening the nuts 18, It is fixed to the bottom wall portion 14a of the case 14.

なお、インフレーター17は、エアバッグ20内に挿入されて配設される状態としており、エアバッグ20は、インフレーター17のボルト17aを利用して、ケース14の底壁部14aに取付固定される。また、エアバッグ20は、後述する下側パネル23に固定される取付座79,79(図5参照)に、図示しない取付ボルトが組み付けられ、これらの取付ボルトと既述のインフレーター17のボルト17aとを利用して、ケース14の底壁部14aに取付固定される。 The inflator 17 is in a state of being inserted and disposed in the airbag 20, and the airbag 20 is attached and fixed to the bottom wall portion 14a of the case 14 by using the bolt 17a of the inflator 17. Further, in the airbag 20, mounting bolts (not shown) are assembled to mounting seats 79, 79 (see FIG. 5) fixed to a lower panel 23 described later, and these mounting bolts and the bolt 17a of the inflator 17 described above are mounted. And are used to attach and fix to the bottom wall portion 14a of the case 14.

また、第1実施形態の場合、車両Vのフロントバンパ2には、歩行者との衝突を検知可能なセンサ2aが、配設されており、センサ2aからの信号を入力させる図示しない作動回路が、センサ2aからの信号に基づいて車両Vの歩行者との衝突を検知した際に、エアバッグ装置Mのインフレーター17を作動させるように構成されている。 Further, in the case of the first embodiment, the front bumper 2 of the vehicle V is provided with a sensor 2a capable of detecting a collision with a pedestrian, and an operating circuit (not shown) for inputting a signal from the sensor 2a is provided. When the collision of the vehicle V with a pedestrian is detected based on the signal from the sensor 2a, the inflator 17 of the airbag apparatus M is activated.

エアバッグ20は、図1〜5に示すように、膨張完了時に、フードパネル12の後端部12aからウインドシールド4の前端部4a付近の上面側のカウル8の上方側を覆うカウルカバー部25と、カウルカバー部25の左右両端から後方に延びて左右のフロントピラー6(6L,6R)の上面6aを覆うピラーカバー部33(L,R)と、を備えて構成されている。エアバッグ20の外周壁21は、上面側の歩行者を受け止める上側パネル22と、下面側のフードパネル12の後端部12aの上面12b側やフロントピラー6の上面6a側に支持される下側パネル23と、を備えて構成されている。実施形態の場合、上側パネル22と下側パネル23とは、図6に示すように、外形形状を等しくしたエアバッグ用基布70,71から構成されており、エアバッグ20の外周壁21は、エアバッグ用基布70,71を重ねて、外周縁70a,71a相互を縫合して、形成されている。 As shown in FIGS. 1 to 5, the airbag 20 includes a cowl cover portion 25 that covers the upper side of the cowl 8 on the upper surface near the front end portion 4a of the windshield 4 from the rear end portion 12a of the hood panel 12 when the inflation is completed. And a pillar cover portion 33 (L, R) extending rearward from both left and right ends of the cowl cover portion 25 and covering the upper surfaces 6a of the left and right front pillars 6 (6L, 6R). The outer peripheral wall 21 of the airbag 20 is a lower side supported by an upper panel 22 that receives a pedestrian on the upper surface side, an upper surface 12b side of the rear end portion 12a of the hood panel 12 on the lower surface side, and an upper surface 6a side of the front pillar 6. And a panel 23. In the case of the embodiment, as shown in FIG. 6, the upper panel 22 and the lower panel 23 are composed of airbag base fabrics 70 and 71 having the same outer shape, and the outer peripheral wall 21 of the airbag 20 is The air bag base cloths 70 and 71 are overlapped with each other and the outer peripheral edges 70a and 71a are sewn together.

また、エアバッグ20は、膨張完了時のカウルカバー部25の上側パネル22と下側パネル23との離隔距離を規制するように、カウルカバー部25の前後方向の略中央付近に、詳しくは、中央より、若干、前側の位置に、左右方向に沿った帯状の横テザー40が、配設されている。そして、カウルカバー部25は、横テザー40によって、横テザー40の前部側の前側膨張部27と、横テザー40の後部側の後側膨張部30と、に区画されている。 In addition, the airbag 20 is located near the center of the cowl cover portion 25 in the front-rear direction so that the distance between the upper panel 22 and the lower panel 23 of the cowl cover portion 25 at the time of completion of inflation is regulated. A band-shaped horizontal tether 40 is provided along the left-right direction at a position slightly on the front side from the center. The cowl cover portion 25 is divided by the horizontal tether 40 into a front inflatable portion 27 on the front side of the horizontal tether 40 and a rear inflatable portion 30 on the rear side of the horizontal tether 40.

後側膨張部30は、インフレーター17が収納される部位であり、その収納部位25cには、インフレーター17の各ボルト17aを挿通させる貫通孔25eが形成されるとともに、その後方側に、インフレーター17を挿入させるスリット25dが形成されている。なお、インフレーター17は、後側膨張部30の収納部位25cを中心として、左右両側に膨張用ガスを流し可能な図示しない整流布内に収納した状態として、スリット25dを経て、カウルカバー部25の後側膨張部30における収納部位25cに挿入させるとともに、各ボルト17aを貫通孔25eから突出させて、エアバッグ20内に収納されることとなる。 The rear expansion part 30 is a part in which the inflator 17 is stored, and the storage part 25c is formed with a through hole 25e into which each bolt 17a of the inflator 17 is inserted, and the inflator 17 is provided on the rear side thereof. A slit 25d to be inserted is formed. The inflator 17 is housed in a straightening cloth (not shown) capable of flowing an inflation gas to the left and right sides of the housing portion 25c of the rear inflatable section 30 as a center, and is then housed in the cowl cover section 25 through the slit 25d. The bolts 17a are housed in the airbag 20 by being inserted into the housing portion 25c of the rear inflatable section 30 and projecting the bolts 17a from the through holes 25e.

横テザー40は、左右の側縁40f,40fを、エアバッグ20の左右の側縁20c,20cから離し、そして、上端40aを、上側パネル22、すなわち、カウルカバー部25の上壁部25aに結合させ、下端40bを、下側パネル23、すなわち、カウルカバー部25の下壁部25bに結合させて、配設されている。また、横テザー40は、左右方向に沿って、断続的に、円形に開口させた3個の挿通孔41を配設させている。後側膨張部30の収納部位25cに収納されたインフレーター17からの膨張用ガスは、各挿通孔41と、横テザー40の左右両側の側縁40f,40f外方の連通口43,43と、を経て、前側膨張部27に流入されたり、あるいは、収納部位25cから、直接、左右のピラーカバー部33(L,R)に流入される。 The lateral tether 40 separates the left and right side edges 40f, 40f from the left and right side edges 20c, 20c of the airbag 20, and places the upper end 40a on the upper panel 22, that is, the upper wall portion 25a of the cowl cover portion 25. The lower end 40b is joined to the lower panel 23, that is, the lower wall portion 25b of the cowl cover portion 25, and is disposed. Further, the horizontal tether 40 is provided with three insertion holes 41 which are opened in a circle intermittently along the left-right direction. The inflation gas from the inflator 17 housed in the housing part 25c of the rear side inflating section 30 is inserted through each insertion hole 41 and the communication ports 43, 43 outside the left and right side edges 40f, 40f of the lateral tether 40. Through the front side inflatable portion 27 or directly from the storage portion 25c to the left and right pillar cover portions 33 (L, R).

そして、カウルカバー部25内には、前端55aを横テザー40に結合させ、後端55bを膨張完了時のカウルカバー部25の後側膨張部30の後部(後縁)20b側の結合部31に結合させた後側テザー55が、配設されている。後側テザー55は、歩行者受止時のカウルカバー部25において、後部側の後側膨張部30の後方側への突出を規制するものであり、エアバッグ20の内圧を確保しつつ、後側膨張部30の圧縮状態を抑制し、カウルカバー部25の厚さ寸法の低下を抑制するために、配設されている。 Then, in the cowl cover portion 25, the front end 55a is joined to the lateral tether 40, and the rear end 55b is joined to the rear portion (rear edge) 20b of the rear expansion portion 30 of the cowl cover portion 25 when the expansion is completed. A rear tether 55 coupled to the is provided. The rear tether 55 controls the rearward inflating of the rear inflatable portion 30 in the cowl cover portion 25 at the time of receiving a pedestrian and secures the internal pressure of the airbag 20 while maintaining the rear pressure. It is arranged in order to suppress the compressed state of the side expansion part 30 and to suppress the reduction in the thickness dimension of the cowl cover part 25.

第1実施形態の場合、後側テザー55は、後端55bを、カウルカバー部25における上壁部25a側に結合させて、配設されている。 In the case of the first embodiment, the rear tether 55 is arranged with the rear end 55b joined to the upper wall portion 25a side of the cowl cover portion 25.

さらに、後側テザー55は、膨張完了時の歩行者受止時における歩行者Wの進入方向WD(図9のB参照)に対して、略直交する方向に配設される状態を維持して、前端55aを、横テザー40の上下端40a,40bから離れた中間領域の結合部40eに、結合させて、配設されている。具体的には、後側テザー55の後端55bは、車両搭載状態での後側膨張部30の膨張完了時における上方へ突出した頂部30aと上壁部25aの後縁25abとの前後方向の中間地点、詳しくは、若干、後方側の中間地点30b、を結合部31として、結合されている(図2参照)。なお、進入方向WDは、一般的に、水平方向からの角度θを、約65°としている。 Further, the rear tether 55 maintains a state in which the rear tether 55 is arranged in a direction substantially orthogonal to the approaching direction WD of the pedestrian W when the pedestrian is received when the expansion is completed (see B in FIG. 9). The front end 55a is disposed so as to be coupled to the coupling portion 40e in the intermediate region apart from the upper and lower ends 40a and 40b of the horizontal tether 40. Specifically, the rear end 55b of the rear tether 55 is located in the front-rear direction between the top portion 30a protruding upward and the rear edge 25ab of the upper wall portion 25a when the rear inflation portion 30 is completely mounted in the vehicle. The intermediate points, more specifically, the intermediate points 30b on the rear side, are used as the connecting portions 31 and are connected (see FIG. 2). The approach direction WD generally has an angle θ from the horizontal direction of about 65°.

そしてさらに、第1実施形態の場合、結合部31,40eに結合させる後側テザー55の前後方向の長さ寸法BLは、エアバッグ20の折畳時の初期状態の際に、上側パネル22と下側パネル23とを平らに展開させる際、上側パネル22や下側パネル23とともに、平らに展開できるように、設定されている。すなわち、エアバッグ20の折畳時の初期状態には、図7のAや図8に示すように、上側パネル22と下側パネル23とを平らに展開させるとともに、横テザー40の上下方向の中央付近に、左右方向に沿う折目40cを付けて、折目40cを後方側に突き出すように、二つ折りして、上端40aを下端40bに接近させるように折り畳む。その際、折目40c近傍の上面40d側を、前端55aを結合させる結合部40eとし、その結合部40eに前端55aを結合させた状態の後側テザー55が、後端55bを、カウルカバー部25の後側膨張部30の結合部31に結合させた状態で、平らに展開できる寸法として、長さ寸法BLが設定されている。勿論、この時、後端55bの結合される結合部31付近の上側パネル22は、シワの発生を抑制されて、平らに展開された状態としている。 Further, in the case of the first embodiment, the length dimension BL in the front-rear direction of the rear tether 55 that is coupled to the coupling portions 31 and 40e is the same as that of the upper panel 22 in the initial state when the airbag 20 is folded. It is set so that when the lower panel 23 and the lower panel 23 are flattened, they can be flattened together with the upper panel 22 and the lower panel 23. That is, in the initial state when the airbag 20 is folded, as shown in FIG. 7A and FIG. 8, the upper panel 22 and the lower panel 23 are unfolded flat, and the horizontal tether 40 moves in the vertical direction. A fold 40c extending in the left-right direction is provided near the center, and the fold 40c is folded in two so as to protrude rearward, and the upper end 40a is folded so as to approach the lower end 40b. At that time, the upper surface 40d side in the vicinity of the fold 40c is used as a connecting portion 40e for connecting the front end 55a, and the rear tether 55 in a state in which the front end 55a is connected to the connecting portion 40e causes the rear end 55b to move to the cowl cover portion. The length dimension BL is set as a dimension that allows the flat expansion in the state of being coupled to the coupling portion 31 of the rear expansion portion 25 of 25. Of course, at this time, the upper panel 22 in the vicinity of the connecting portion 31 to which the rear end 55b is connected is in a state of being flattened while suppressing the generation of wrinkles.

また、エアバッグ20は、ピラーカバー部33L,33Rとカウルカバー部25との境界部位付近に、膨張時の厚さ寸法を抑えるように、上側パネル22と下側パネル23とを結合する端側テザー50(L,R)を配設させている。 Further, the airbag 20 has an end side near the boundary portion between the pillar cover portions 33L and 33R and the cowl cover portion 25, which connects the upper panel 22 and the lower panel 23 so as to suppress the thickness when inflated. Tethers 50 (L, R) are arranged.

さらに、エアバッグ20の下側パネル23側におけるインフレーター17の収納部位25cには、下側パネル23の内周面側に横テザー40の下端40b付近から後方に延びる当て布77が配設され、下側パネル23の外周面側に、当て布78が配設されている。さらに、下側パネル23の収納部位25cの左右両側には、ケース14の底壁部14aにナット止めされる図示しない取付ボルトを取り付けるための取付座79が、形成されている。 Further, in the storage portion 25c of the inflator 17 on the lower panel 23 side of the airbag 20, a patch cloth 77 extending rearward from the vicinity of the lower end 40b of the horizontal tether 40 is disposed on the inner peripheral surface side of the lower panel 23, A patch cloth 78 is disposed on the outer peripheral surface side of the lower panel 23. Further, mounting seats 79 for mounting mounting bolts (not shown) that are nut-fastened to the bottom wall portion 14a of the case 14 are formed on both left and right sides of the storage portion 25c of the lower panel 23.

第1実施形態のエアバッグ20を構成する構成材料は、図6に示すように、上側パネル22と下側パネル23とをそれぞれ形成するエアバッグ用基布70,71、横テザー40を形成するテザー用基布73、後側テザー55を形成するテザー用基布74、端側テザー50(L,R)を形成するテザー用基布75,76を備えて構成されている。端側テザー50(L,R)は、それぞれ、テザー用基布75,76相互を結合させて配設される。そして、これらの基布は、ポリエステルやポリアミド等の合成繊維から形成されている。さらに、エアバッグ20は、既述の当て布77,78や取付座79,79を備えて構成されている。 As shown in FIG. 6, the constituent materials forming the airbag 20 of the first embodiment form the airbag base fabrics 70 and 71 that form the upper panel 22 and the lower panel 23, respectively, and the lateral tether 40. The tether base cloth 73, the tether base cloth 74 forming the rear tether 55, and the tether base cloths 75 and 76 forming the end side tethers 50 (L, R) are provided. The end side tethers 50 (L, R) are arranged by connecting the tether base fabrics 75, 76 to each other. These base fabrics are formed from synthetic fibers such as polyester and polyamide. Further, the airbag 20 is configured to include the above-mentioned patch cloths 77, 78 and mounting seats 79, 79.

エアバッグ20の製造について説明すると、予め、下側パネル23を形成するエアバッグ用基布71の所定位置に、縫合糸84を使用して当て布77,78を縫合し、そして、当て布78を基布71の裏面から離すように前方側に曲げた状態として、エアバッグ用基布71と当て布77とを重ねた状態で、スリット25dを形成し、ついで、当て布78を基布71の裏面側に戻し、エアバッグ用基布71、当て布77、及び、当て布78を重ねた状態で、貫通孔25eを一体的に形成する。なお、横テザー40を形成するテザー用基布73の結合部40eには、後側テザー55を形成するテザー用基布74の前端55aを縫合しておく。 Explaining the manufacture of the airbag 20, the patch cloths 77 and 78 are sewn to the predetermined position of the airbag base cloth 71 forming the lower panel 23 using the suture thread 84 in advance, and the patch cloth 78 is then sewn. Is bent to the front side so as to be separated from the back surface of the base cloth 71, the slit 25d is formed in a state in which the airbag base cloth 71 and the pad cloth 77 are overlapped, and then the pad cloth 78 is put into the base cloth 71. Then, the through hole 25e is integrally formed with the airbag base cloth 71, the pad cloth 77, and the pad cloth 78 in a stacked state. The front end 55a of the tether base cloth 74 forming the rear tether 55 is sewn to the joint portion 40e of the tether base cloth 73 forming the lateral tether 40.

ついで、エアバッグ用基布71に対し、端側テザー50の下側を形成するテザー用基布76を縫合する。また、上側パネル22を形成するエアバッグ用基布70に対して、端側テザー50の上側を形成するテザー用基布75を縫合するとともに、横テザー40を形成するテザー用基布73の上端40aを縫合し、さらに、後側テザー55を形成するテザー用基布74の後端55bを、結合部31の部位に縫合する。 Next, the tether base cloth 76 forming the lower side of the end side tether 50 is sewn to the airbag base cloth 71. Further, the tether base cloth 75 forming the upper side of the end side tether 50 is sewn to the airbag base cloth 70 forming the upper side panel 22, and the upper end of the tether base cloth 73 forming the lateral tether 40. 40a is sewn, and the rear end 55b of the tether base cloth 74 forming the rear tether 55 is sewn to the joint portion 31.

そして、横テザー40を形成するテザー用基布73の下端40bを、下側パネル23を形成するテザー用基布74に縫合し、かつ、端側テザー50L,50Rを形成するテザー用基布75,76相互を縫合しつつ、上側パネル22を形成するエアバッグ用基布70と、下側パネル23を形成するエアバッグ用基布71と、の外周縁70a,71a相互を縫合すれば、エアバッグ20を形成することができる。 Then, the lower end 40b of the tether base cloth 73 forming the lateral tether 40 is sewn to the tether base cloth 74 forming the lower panel 23, and the tether base cloth 75 forming the end side tethers 50L and 50R. , 76, the outer peripheral edges 70a, 71a of the airbag base fabric 70 forming the upper panel 22 and the airbag base fabric 71 forming the lower panel 23 are sewn together. The bag 20 can be formed.

上記のように製造したエアバッグ20は、図7に示すように、折り畳む。まず、図7のAや図8に示すように、上側パネル22と下側パネル23とを平らに展開させる初期状態とする。その際、横テザー40の上下方向の中央付近に、左右方向に沿う折目40cを付けて、折目40cを後方側に突き出すように、二つ折りして、上端40aを下端40bに接近させるように折り畳み、また、端側テザー50L,50Rも、テザー用基布76,76の結合部位相互を、エアバッグ20の左右方向の中央側に突き出して、平らに展開させる。 The airbag 20 manufactured as described above is folded as shown in FIG. 7. First, as shown in FIG. 7A and FIG. 8, the upper panel 22 and the lower panel 23 are in an initial state in which they are flatly developed. At that time, a fold 40c extending in the left-right direction is provided near the center of the horizontal tether 40 in the up-down direction, and the fold 40c is folded in two so that the upper end 40a approaches the lower end 40b. The end side tethers 50L and 50R are also folded so that the joining portions of the tether base fabrics 76 and 76 project toward the center of the airbag 20 in the left-right direction and are flattened.

ついで、図7のA,Bに示すように、平らに展開したエアバッグ20の後縁20b側を、収納部位25cの後縁側近傍に折目C1を付けて、前縁20aに接近させるように、収納部位25cの上方に折り重ねる。さらに、図7のCに示すように、前縁20a側を、折目C2を付けて、収納部位25cの上方に重ねるように、後方側へ折り畳む。ついで、図7のC,Dに示すように、左右の側縁20c側を、収納部位25cに接近させるように、蛇腹折りして折り畳む。そして、図7のEに示すように、収納部位25c上に折り畳まれたエアバッグ20が載るように、前縁側からロール折りすれば、エアバッグ20の折り畳みが完了する。 Then, as shown in FIGS. 7A and 7B, the rear edge 20b side of the flattened airbag 20 is provided with a fold C1 near the rear edge side of the storage portion 25c so as to approach the front edge 20a. , Fold above the storage part 25c. Further, as shown in FIG. 7C, the front edge 20a side is folded rearward so that the front edge 20a side has a fold C2 and is overlapped above the storage portion 25c. Then, as shown in C and D of FIG. 7, the left and right side edges 20c are folded in a bellows so as to approach the storage portion 25c. Then, as shown in E of FIG. 7, roll folding is performed from the front edge side so that the folded airbag 20 is placed on the storage portion 25c, whereby the folding of the airbag 20 is completed.

その後、取付座79,79に図示しない取付ボルトを組み付けるとともに、取付座79や当て布78付近を露出させて、折り崩れ防止用のラッピング材でエアバッグ20を包む。その後、収納部位25cのスリット25dを露出させるように、当て布78を曲げて、図示しない整流布に挿入させたインフレーター17を、露出させた収納部位25cのスリット25dを利用して、エアバッグ20内に挿入し、さらに、当て布78を戻して、各ボルト17aを貫通孔25eから突出させてエアバッグ組付体を形成する。ついで、エアバッグ組付体をケース14に収納して、ケース14の開口14cを覆うようにエアバッグカバー16をケース14に組み付ける。そして、車両Vの所定位置にケース14を配置させて、ケース14から突出しているボルト17aや取付座79に組み付けた図示しない取付ボルトを、ナット止めし、インフレーター17から延びる作動用の信号線を、所定の作動回路に接続すれば、エアバッグ装置Mを、車両Vに搭載することができる。 Thereafter, mounting bolts (not shown) are attached to the mounting seats 79, 79, the mounting seat 79 and the vicinity of the pad 78 are exposed, and the airbag 20 is wrapped with a wrapping material for preventing collapse. After that, the pad cloth 78 is bent so that the slit 25d of the storage portion 25c is exposed, and the inflator 17 inserted into the rectifying cloth (not shown) is used to utilize the slit 25d of the exposed storage portion 25c. Then, the pad cloth 78 is returned, and the bolts 17a are projected from the through holes 25e to form an airbag assembly. Then, the airbag assembly is housed in the case 14, and the airbag cover 16 is assembled to the case 14 so as to cover the opening 14c of the case 14. Then, by disposing the case 14 at a predetermined position of the vehicle V, the bolts 17a protruding from the case 14 and the mounting bolts (not shown) assembled to the mounting seat 79 are fixed with nuts, and the signal lines for operation extending from the inflator 17 are fixed. The airbag apparatus M can be mounted on the vehicle V by connecting to a predetermined operating circuit.

その後、インフレーター17に作動信号が入力されれば、インフレーター17の図示しないガス吐出部から膨張用ガスが吐出されて、折り畳まれたエアバッグ20が、展開膨張し、エアバッグカバー16を押し開いて、エアバッグ20のカウルカバー部25が、フードパネル12の後端部12aの上面12bやカウル8・ウインドシールド4の前端部4aの上方を覆い、ピラーカバー部33(L,R)がフロントピラー6の上面6aを覆うこととなる。 After that, when an actuation signal is input to the inflator 17, inflation gas is discharged from a gas discharge portion (not shown) of the inflator 17, and the folded airbag 20 expands and inflates to push open the airbag cover 16. The cowl cover part 25 of the airbag 20 covers the upper surface 12b of the rear end part 12a of the hood panel 12 and the upper part of the front end part 4a of the cowl 8 and windshield 4, and the pillar cover parts 33 (L, R) are the front pillars. The upper surface 6a of 6 is covered.

そして、第1実施形態の歩行者用エアバッグ20では、図9のA,Bに示すように、膨張完了後のカウルカバー部25の後部側の後側膨張部30に対して、上方から歩行者Wが進入してくると、上壁部25aが下壁部25bに接近するように下方移動しつつ、後側膨張部30を後方側へ突出させようとする。しかし、カウルカバー部25におけるカウル8の上方を覆う後側膨張部30は、前端55a側を横テザー40に結合させた後側テザー55の後端55bが、結合されており、その後側膨張部30の後方への突出が、後側テザー55により抑制される。そのため、カウルカバー部25は、内圧を確保した状態で、厚さ寸法の低下を抑制して、歩行者Wを受け止めることができて、底付きすること無く、十分な受止ストロークを確保して、歩行者Wを受け止めて保護することができる。そして勿論、カウルカバー部25は、上壁部25aと下壁部25bとを連結する横テザー40を配設させていることから、膨張時の上方への突出高さを抑えて、十分な厚さ寸法を維持した状態で、前後方向の幅寸法を広げる構成であり、カウル8の上方の保護エリアを狭めない。 Then, in the pedestrian airbag 20 of the first embodiment, as shown in FIGS. 9A and 9B, the pedestrian airbag 20 walks from above with respect to the rear side inflatable portion 30 on the rear side of the cowl cover portion 25 after the inflation is completed. When the person W enters, the upper wall portion 25a moves downward so as to approach the lower wall portion 25b, and the rear inflating portion 30 tries to protrude rearward. However, in the rear inflatable portion 30 of the cowl cover portion 25 that covers the cowl 8 from above, the rear end 55b of the rear tether 55 having the front end 55a side thereof joined to the lateral tether 40 is joined to the rear inflatable portion. The rearward protrusion of 30 is suppressed by the rear tether 55. Therefore, the cowl cover portion 25 can suppress the reduction in the thickness dimension while keeping the internal pressure, can receive the pedestrian W, and can secure a sufficient receiving stroke without bottoming. The pedestrian W can be received and protected. Of course, since the cowl cover portion 25 is provided with the lateral tether 40 that connects the upper wall portion 25a and the lower wall portion 25b, the cowl cover portion 25 has a sufficient protruding thickness when restrained from protruding upward. The width dimension in the front-rear direction is widened while maintaining the height dimension, and the protection area above the cowl 8 is not narrowed.

したがって、第1実施形態の歩行者用エアバッグ20では、カウル8の上方の保護エリアを狭めることなく、十分な受止ストロークを確保することができる。 Therefore, in the pedestrian airbag 20 of the first embodiment, it is possible to secure a sufficient receiving stroke without narrowing the protection area above the cowl 8.

また、後側テザー55は、後端55bをカウルカバー部25の後側膨張部30の周壁(上壁部25a)に結合させているものの、前端55aを、カウルカバー部25の周壁で無く、横テザー40に連結させていることから、エアバッグ20の折畳時におけるカウルカバー部25の上壁部25aと下壁部25bとを平らに展開させて重ねる際、後側テザー55の前端55aの横テザー40との結合部40e付近を後方側に突き出すように折り曲げれば、後側テザー55を平らに展開させておくことが可能となって、エアバッグ20の折畳時におけるカウルカバー部25の上壁部25aと下壁部25bとを平らに展開させる形態を確保し易く、エアバッグ20に後側テザー55を配設することとなっても、後側テザー55によって、エアバッグ20の折畳形状が嵩張ること、を抑制できる。 Further, although the rear tether 55 has the rear end 55b joined to the peripheral wall (upper wall 25a) of the rear inflating portion 30 of the cowl cover portion 25, the front end 55a is not the peripheral wall of the cowl cover portion 25, Since the upper wall portion 25a and the lower wall portion 25b of the cowl cover portion 25 when the airbag 20 is folded are flatly deployed and overlapped, the front end 55a of the rear tether 55 is connected to the horizontal tether 40. The rear tether 55 can be flattened out by bending the vicinity of the connecting portion 40e with the horizontal tether 40 so as to project rearward, and the cowl cover portion when the airbag 20 is folded is formed. 25, it is easy to secure a form in which the upper wall portion 25a and the lower wall portion 25b of the airbag 25 are flatly deployed, and even if the rear tether 55 is disposed in the airbag 20, the rear tether 55 causes the airbag 20 It is possible to prevent the folded shape from being bulky.

そして、第1実施形態の歩行者用エアバッグ20では、後側テザー55が、後端55bを、カウルカバー部25における上壁部25a側に結合させて、配設されている。 Further, in the pedestrian airbag 20 of the first embodiment, the rear tether 55 is disposed with the rear end 55b being joined to the upper wall portion 25a side of the cowl cover portion 25.

そのため、第1実施形態では、横テザー40の上端40aから後側テザー55の後端55b側の結合される上壁部25aの部位(結合部)31までのカウルカバー部25における前後方向の周壁の長さ寸法CL1が、図2の二点鎖線に示す後側テザー55Aのように、後端55bを下壁部25b側に結合させた場合の長さ寸法CL0に比べて、短くなる。そして、この横テザー40の上端40aから後側テザー55の後端55b側の結合される上壁部25aの部位31までのカウルカバー部25における前後方向の周壁26は、自由空間に配置されて、歩行者Wの受止時に、カウルカバー部25の後側膨張部30が後方へ突出する際に、膨らもうとするエリアであり、その長さ寸法CL1が短いことから、膨らみを小さくできて、後側膨張部30の後方側への突出を好適に抑制できる。そのため、カウルカバー部25が、内圧を維持した状態で、厚さ寸法の低下を抑制でき、十分な受止ストロークを確保して、的確に、歩行者Wを受け止めることができる。 Therefore, in the first embodiment, the peripheral wall in the front-rear direction of the cowl cover portion 25 from the upper end 40a of the lateral tether 40 to the portion (joint portion) 31 of the upper wall portion 25a to be joined on the rear end 55b side of the rear tether 55. 2 is shorter than the length dimension CL0 when the rear end 55b is joined to the lower wall portion 25b side as in the rear tether 55A shown by the chain double-dashed line in FIG. The peripheral wall 26 in the front-rear direction in the cowl cover portion 25 from the upper end 40a of the lateral tether 40 to the portion 31 of the upper wall portion 25a to be joined on the rear end 55b side of the rear tether 55 is arranged in a free space. When the pedestrian W is received, when the rear inflatable portion 30 of the cowl cover portion 25 projects rearward, this is an area to be inflated. Since the length dimension CL1 is short, the bulge can be reduced. Thus, the rearward expansion of the rear inflatable section 30 can be suitably suppressed. Therefore, the cowl cover portion 25 can suppress the reduction in the thickness dimension while maintaining the internal pressure, secure a sufficient receiving stroke, and accurately receive the pedestrian W.

勿論、上記の点を考慮しなければ、後側テザー55Aを設けたエアバッグ20Aでも、後側テザー55Aにより、歩行者受止時の後側膨張部30の後方への突出が抑制されることから、受止ストロークを確保することができて、本発明の作用効果を達成することができ、エアバッグ20Aのように構成してもよい。 Of course, if the above points are not taken into consideration, even in the airbag 20A provided with the rear tether 55A, the rear tether 55A suppresses the rearward expansion of the rear inflatable portion 30 when the pedestrian is received. Therefore, the receiving stroke can be secured, the operation and effect of the present invention can be achieved, and the airbag 20A may be configured.

また、第1実施形態の歩行者用エアバッグ20では、後側テザー55が、膨張完了時の歩行者Wの受止時における歩行者Wの進入方向WDに対して、略直交する方向に配設される状態を維持して、前端55aを、横テザー40の上下端から離れた中間領域に、結合させて、配設されている(図9のB参照)。 Further, in the pedestrian airbag 20 of the first embodiment, the rear tether 55 is disposed in a direction substantially orthogonal to the approach direction WD of the pedestrian W when the pedestrian W is received when the inflation is completed. Maintaining the installed state, the front end 55a is connected to the intermediate region apart from the upper and lower ends of the horizontal tether 40 and disposed (see B in FIG. 9).

そのため、第1実施形態では、歩行者Wの進入時に、カウルカバー部25の後側膨張部30が突出しようとする方向が、進入方向WDに対して略直交する方向であり、その方向に略沿うように、後側テザー55が配設されていることから、後側膨張部30の後方側への突出を的確に規制できて、カウルカバー部25は、内圧を維持した状態で、好適に、十分な受止ストロークを確保して、歩行者Wを受け止めることができる。 Therefore, in the first embodiment, when the pedestrian W is approaching, the direction in which the rear expansion part 30 of the cowl cover part 25 is projected is a direction substantially orthogonal to the approach direction WD, and is substantially in that direction. Since the rear tether 55 is arranged so as to follow, the rearward expansion of the rear inflatable portion 30 can be accurately regulated, and the cowl cover portion 25 is preferably maintained in a state where the internal pressure is maintained. The pedestrian W can be received by securing a sufficient receiving stroke.

さらに、第1実施形態では、膨張完了時の外周壁21が、外形形状を略同形とした上壁部25aを含めた上側パネル22と、下壁部25bを含めた下側パネル23と、から構成されていれば、折畳時の初期状態として、上側パネル22と下側パネル23とを、平らに展開させつつ重ねるとともに、折目40cを後方に突き出して、上端40a側を下端40b側に接近させるように、横テザー40を二つ折りする状態とする構成として、折畳時の初期状態の後側テザー55が、前端55aを二つ折りされる横テザー40の折目40cの近傍に結合させ、後端55bを上側パネル22に結合させた状態で、かつ、平らな状態となるように、後側テザー55の前後方向の長さ寸法BLが、設定されている。 Further, in the first embodiment, the outer peripheral wall 21 at the time of completion of expansion is composed of the upper panel 22 including the upper wall portion 25a having the substantially same outer shape and the lower panel 23 including the lower wall portion 25b. If configured, in the initial state of folding, the upper panel 22 and the lower panel 23 are flatly developed and overlapped with each other, and the fold 40c is projected rearward so that the upper end 40a side is the lower end 40b side. In order to bring them closer to each other, the horizontal tether 40 is folded in two, and the rear tether 55 in the initial state at the time of folding is connected to the vicinity of the fold 40c of the horizontal tether 40 in which the front end 55a is folded in two. The length dimension BL of the rear tether 55 in the front-rear direction is set so that the rear end 55b is joined to the upper panel 22 and is in a flat state.

そのため、第1実施形態では、エアバッグ20の折畳時の初期状態で、図7のA,図8に示すように、後側テザー55を、平らに展開した下側パネル23と上側パネル22との間で、二つ折りされた横テザー40の折目40cから平らに展開させた状態で、嵩張らせずに、配設させることができて、その後のエアバッグ20の折り畳みを、嵩張らせずに、コンパクトに折り畳むことができる。さらに、後側テザー55は、前端55aを、横テザー40の後方に突き出された折目40cの近傍の上面40dに結合させて、カウルカバー部25の後縁25ab側に接近させる構成であって、嵩張らずに平らに展開できる範囲内で、前後方向の長さ寸法BLを最も短くできる。そのため、エアバッグ20の膨張時には、前後方向の長さ寸法BLを短くできた後側テザー55は、後端55bを連結させたカウルカバー部25の後部側の結合部31を、大きな引張力として、前方へ引っ張ることができる。その結果、歩行者Wの進入時において、カウルカバー部25の後側膨張部30が、一層、後方側への突出を規制されて、カウルカバー部25は、内圧を維持した状態で、厚さ寸法の低下を抑制でき、十分な受止ストロークとして、歩行者Wを受け止めることができる。 Therefore, in the first embodiment, in the initial state when the airbag 20 is folded, as shown in FIGS. 7A and 8A, the rear tether 55 is flatly expanded to the lower panel 23 and the upper panel 22. In the state in which it is flatly deployed from the fold 40c of the lateral tether 40 that is folded in two, it can be arranged without being bulky, and the subsequent folding of the airbag 20 can be made without bulky. And it can be folded compactly. Further, the rear tether 55 has a structure in which the front end 55a is coupled to the upper surface 40d in the vicinity of the fold 40c projecting to the rear of the lateral tether 40 and is brought closer to the rear edge 25ab side of the cowl cover portion 25. The length dimension BL in the front-rear direction can be minimized within a range in which it can be developed flat without being bulky. Therefore, when the airbag 20 is inflated, the rear tether 55, which can shorten the length dimension BL in the front-rear direction, uses the rear joint portion 31 of the cowl cover portion 25 to which the rear end 55b is connected as a large tensile force. , Can be pulled forward. As a result, when the pedestrian W is approaching, the rear-side inflating portion 30 of the cowl cover portion 25 is further restricted from projecting rearward, and the cowl cover portion 25 has a thickness in a state where the internal pressure is maintained. The dimensional decrease can be suppressed, and the pedestrian W can be received with a sufficient receiving stroke.

また、歩行者用エアバッグとしては、図10に示す第2実施形態の歩行者用エアバッグ20Bように構成してもよい。このエアバッグ20Bでは、カウルカバー部25内における横テザー40の前方側の部位である前側膨張部27側に、上壁部25aと下壁部25bとを連結するように、左右方向に沿って帯状に配設される第2横テザー45が、配設されるとともに、後端60bを第2横テザー45に結合させ、前端60aを膨張完了時のカウルカバー部25の前部側の結合部28に結合させて、歩行者受止時のカウルカバー部25における前側膨張部27の前方側への突出を抑制する前側テザー60が、配設されている。 The pedestrian airbag may be configured as the pedestrian airbag 20B of the second embodiment shown in FIG. In this airbag 20B, along the left-right direction, the upper wall portion 25a and the lower wall portion 25b are connected to the front inflating portion 27 side, which is the front side portion of the lateral tether 40 in the cowl cover portion 25, so as to connect the upper wall portion 25a and the lower wall portion 25b. A second horizontal tether 45 arranged in a strip shape is arranged, and the rear end 60b is connected to the second horizontal tether 45, and the front end 60a is connected to the front side of the cowl cover part 25 when the expansion is completed. A front tether 60 is provided which is coupled to the front side tether 28 to prevent the front inflating portion 27 of the cowl cover portion 25 from protruding forward when the pedestrian is received.

このエアバッグ20Bでは、カウルカバー部25の横テザー40の前部側の前側膨張部27においても、後端60b側を第2横テザー45に結合させた前側テザー60の前端60aが、結合されており、その前側膨張部27の前方への突出が、前側テザー60により抑制される。そのため、カウルカバー部25の前側膨張部27で歩行者を受け止めることとなっても、内圧を維持した状態で、厚さ寸法を抑制して、歩行者を受け止めることができて、底付きすること無く、十分な受止ストロークを確保して、歩行者を受け止めて保護することができる。 In this airbag 20B, the front end 60a of the front tether 60 having the rear end 60b side joined to the second horizontal tether 45 is also joined in the front inflating portion 27 on the front side of the lateral tether 40 of the cowl cover portion 25. The front tether 60 prevents the front inflating portion 27 from projecting forward. Therefore, even if the front side inflating portion 27 of the cowl cover portion 25 receives a pedestrian, it is possible to suppress the thickness dimension while keeping the internal pressure and receive the pedestrian, and to bottom out. Without, it is possible to secure a sufficient receiving stroke and receive and protect a pedestrian.

なお、この第2実施形態のエアバッグ20Bでは、第2横テザー45が、横テザー(第1横テザーともいえる)40と同形状として、上端45aを横テザー40の上端40aと一致する位置として、上壁部25aに結合され、下端45bも、横テザー40の下端40bと一致する位置として、下壁部25bに結合されているが、第2横テザー45の上端45aと下端45bとは、歩行者受止時の前側膨張部27の保護エリアを狭めず、かつ、前側膨張部27の受止ストロークを確保できる範囲内で、適宜、横テザー40の上端40a,40bから前方側にずれて、配設されてもよい。 In the airbag 20B of the second embodiment, the second lateral tether 45 has the same shape as the lateral tether (also referred to as the first lateral tether) 40, and the upper end 45a is located at a position corresponding to the upper end 40a of the lateral tether 40. , The lower wall 45b is coupled to the upper wall 25a, and the lower end 45b is also coupled to the lower wall 25b at a position corresponding to the lower end 40b of the horizontal tether 40. The upper end 45a and the lower end 45b of the second horizontal tether 45 are Within a range that does not narrow the protection area of the front inflatable portion 27 at the time of receiving a pedestrian and can secure the receiving stroke of the front inflatable portion 27, appropriately shift from the upper ends 40a and 40b of the lateral tether 40 to the front side. , May be provided.

さらに、前側テザー60は、前端60aを上壁部25aの前縁25af近傍の上方側に、結合させ、後端60bを、第2横テザー45の上下方向の中央付近に結合させている。 Further, in the front tether 60, the front end 60a is joined to the upper side near the front edge 25af of the upper wall portion 25a, and the rear end 60b is joined to the vicinity of the vertical center of the second horizontal tether 45.

なお、第2横テザー45は、左右方向の幅寸法を横テザー40と同様とし、また、横テザー40と同様に、前後方向に貫通する複数の挿通孔41を配設させている。 The second lateral tether 45 has a width dimension in the left-right direction similar to that of the lateral tether 40, and, like the lateral tether 40, has a plurality of insertion holes 41 penetrating in the front-rear direction.

そしてまた、前側テザーを配設する場合、図11〜13に示す第3実施形態の歩行者用エアバッグ20Cのように構成してもよい。 Further, when the front tether is provided, it may be configured like the pedestrian airbag 20C of the third embodiment shown in FIGS.

このエアバッグ20Cでは、第2実施形態の横テザー40と第2横テザー45と略同様に、カウルカバー部25の上壁部25aと下壁部25bとに、上端40a,45aと下端40b,45bとを結合させて、横テザー(第1横テザーともいえる)40Cと横テザー40Cの前方側の第2横テザー45Cとを配設させている。 In this airbag 20C, similar to the lateral tether 40 and the second lateral tether 45 of the second embodiment, the upper wall portion 25a and the lower wall portion 25b of the cowl cover portion 25 have upper ends 40a, 45a and lower ends 40b, The horizontal tether (also referred to as the first horizontal tether) 40C and the second horizontal tether 45C on the front side of the horizontal tether 40C are arranged by being combined with 45b.

但し、このエアバッグ20Cの横テザー40Cと第2横テザー45Cでは、下端40b,45bは、下壁部25b側で一致する位置に結合させているものの、上端40a,45aは、前後に離れて、上壁部25aに結合されている。 However, in the lateral tether 40C and the second lateral tether 45C of the airbag 20C, the lower ends 40b and 45b are coupled to the same position on the lower wall portion 25b side, but the upper ends 40a and 45a are separated from each other in the front-rear direction. , Is coupled to the upper wall portion 25a.

さらに、第3実施形態のエアバッグ20Cでは、横テザー(第1横テザー)40Cと第2横テザー45Cとは、第2実施形態のような挿通孔41を備えておらず、左右の側縁40f,45f相互が結合されて、カウルカバー部25内の膨張用ガスが流入しないように構成されている。そして、横テザー(第1横テザー)40Cと第2横テザー45Cとの上端40a,45aの上壁部25aに結合される領域には、左右方向に並設された円形の開口22aが配設されている。 Further, in the airbag 20C of the third embodiment, the lateral tether (first lateral tether) 40C and the second lateral tether 45C do not have the insertion holes 41 as in the second embodiment, and the left and right side edges are not provided. The 40f and 45f are coupled to each other so that the inflation gas in the cowl cover portion 25 does not flow in. Then, circular openings 22a arranged side by side in the left-right direction are provided in the regions joined to the upper wall portions 25a of the upper ends 40a, 45a of the horizontal tether (first horizontal tether) 40C and the second horizontal tether 45C. Has been done.

すなわち、前後の横テザー40C及び第2横テザー45Cと、開口22aを有した上壁部25aのエリア25acと、で囲まれた部位は、カウルカバー部25内の膨張用ガスが流入せずに、開口22aから大気を流入可能な大気室(空気室、空洞室)35を構成している。 That is, the portion surrounded by the front and rear horizontal tethers 40C and the second horizontal tether 45C and the area 25ac of the upper wall portion 25a having the opening 22a does not allow the inflation gas in the cowl cover portion 25 to flow in. An atmosphere chamber (air chamber, cavity chamber) 35 that allows the atmosphere to flow in through the opening 22a is formed.

このエアバッグ20Cでは、膨張完了時、第2実施形態と同様に、後側テザー55と前側テザー60とによって、カウルカバー部25の後側膨張部30側と前側膨張部27側とが、歩行者受止時に、後方側や前方側への突出が抑制されることから、内圧を確保して、厚さ寸法の低下を抑制でき、十分な受止ストロークにより、歩行者を受け止めることができる。 In the airbag 20C, when the inflation is completed, the rear tether 55 and the front tether 60 cause the rear inflatable portion 30 side and the front inflatable portion 27 side of the cowl cover portion 25 to walk, as in the second embodiment. Since the protrusion to the rear side or the front side is suppressed at the time of receiving the person, it is possible to secure the internal pressure, suppress the decrease in the thickness dimension, and receive the pedestrian with a sufficient receiving stroke.

そしてさらに、横テザー40Cと第2横テザー45Cとが、後側テザー55と前側テザー60との引っ張りにより、相互に離隔し、開口22aから大気を流入させて、大気室35を形成する。そのため、前側膨張部27や後側膨張部30とで歩行者を受け止める際、前側膨張部27自体や後側膨張部30自体が、内圧を上昇させ過ぎるような場合、大気室35の容積分、カウルカバー部25全体の内圧上昇を抑制できることから、好適な内圧で、歩行者を受け止めることができることとなる。 Further, the lateral tether 40C and the second lateral tether 45C are separated from each other by pulling the rear tether 55 and the front tether 60, and the atmosphere is introduced from the opening 22a to form the atmosphere chamber 35. Therefore, when the front inflatable section 27 or the rear inflatable section 30 receives a pedestrian, when the front inflatable section 27 itself or the rear inflatable section 30 itself raises the internal pressure too much, the volume of the atmosphere chamber 35, Since the increase in the internal pressure of the entire cowl cover portion 25 can be suppressed, the pedestrian can be received with a suitable internal pressure.

4…フロントウインドシールド、4a…前端部、8…カウル、12…フードパネル、12a…後端部、20,20A,20B,20C…(歩行者用)エアバッグ、20b…(後部)後縁、21…外周壁、22,22B…上側パネル、23…下側パネル、25…カウルカバー部、25a…上壁部、25b…下壁部、27…前側膨張部、30…後側膨張部、40,40C…横テザー、40a…上端、40b…下端、40c…折目、45,45C…第2横テザー、45a…上端、45b…下端、55,55A…後側テザー、55a…前端、55b…後端、60…前側テザー、60a…前端、60b…後端、M…歩行者用エアバッグ装置。 4... Front windshield, 4a... Front end part, 8... Cowl, 12... Hood panel, 12a... Rear end part, 20, 20A, 20B, 20C... (Pedestrian) airbag, 20b... (Rear part) rear edge, 21... Outer peripheral wall, 22, 22B... Upper panel, 23... Lower panel, 25... Cowl cover part, 25a... Upper wall part, 25b... Lower wall part, 27... Front expansion part, 30... Rear expansion part, 40 , 40C... Horizontal tether, 40a... Top end, 40b... Bottom end, 40c... Fold, 45, 45C... Second lateral tether, 45a... Top end, 45b... Bottom end, 55, 55A... Rear tether, 55a... Front end, 55b... Rear end, 60... Front tether, 60a... Front end, 60b... Rear end, M... Pedestrian airbag device.

Claims (5)

膨張完了時に、フードパネルの後端部からフロントウインドシールドの前端部付近の上面側のカウルの上方側を覆うカウルカバー部、を備えて構成される歩行者用エアバッグであって、
前記カウルカバー部内に、
膨張完了時の上壁部と下壁部とを連結するように、左右方向に沿って帯状に配設される横テザーが、配設されるとともに、
該横テザーに、前端を結合させ、後端を、膨張完了時の前記カウルカバー部の後部側に結合させて、前記カウルカバー部における後部側の後方側への突出を抑制する後側テザーが、配設されていることを特徴とする歩行者用エアバッグ。
A pedestrian airbag configured to include a cowl cover portion that covers an upper side of a cowl on an upper surface side near a front end portion of a front windshield from a rear end portion of a hood panel when inflated,
In the cowl cover part,
A lateral tether, which is arranged in a strip shape along the left-right direction, is arranged so as to connect the upper wall portion and the lower wall portion when the expansion is completed,
A front tether is joined to the lateral tether, and a rear end is joined to a rear portion side of the cowl cover portion at the time of completion of expansion, and a rear tether for suppressing rearward protrusion of the rear portion side of the cowl cover portion is provided. A pedestrian airbag characterized by being provided.
前記後側テザーが、後端を、前記カウルカバー部における前記上壁部側に結合させて、配設されていることを特徴とする請求項1に記載の歩行者用エアバッグ。 The pedestrian airbag according to claim 1, wherein the rear tether is disposed with its rear end coupled to the upper wall portion side of the cowl cover portion. 前記後側テザーが、膨張完了時における歩行者の進入方向に対して、略直交する方向に配設される状態を維持して、前端を、前記横テザーの上下端から離れた中間領域に、結合させて、配設されていることを特徴とする請求項2に記載の歩行者用エアバッグ。 The rear tether, with respect to the approach direction of a pedestrian at the time of completion of expansion, while maintaining a state arranged in a substantially orthogonal direction, the front end, in the intermediate region away from the upper and lower ends of the lateral tether, The pedestrian airbag according to claim 2, wherein the pedestrian airbag is provided by being combined with the airbag. 膨張完了時の外周壁が、外形形状を略同形とした前記上壁部を含めた上側パネルと、前記下壁部を含めた下側パネルと、から構成され、
折畳時の初期状態として、前記上側パネルと前記下側パネルとを、平らに展開させつつ重ねるとともに、折目を後方に突き出して、上端側を下端側に接近させるように、前記横テザーを二つ折りする状態とする構成として、
折畳時の初期状態の前記後側テザーが、前端を、二つ折りされる前記横テザーの前記折目近傍に結合させ、後端を前記上側パネルに結合させた状態で、かつ、平らな状態となるように、前記後側テザーの前後方向の長さ寸法が、設定されていることを特徴とする請求項3に記載の歩行者用エアバッグ。
The outer peripheral wall at the time of completion of expansion is composed of an upper panel including the upper wall portion and a lower panel including the lower wall portion that have substantially the same outer shape,
As an initial state at the time of folding, the upper panel and the lower panel are overlapped while being flatly developed, and the folds are projected rearward, so that the upper end side approaches the lower end side, the lateral tether is As a structure to be folded in two,
In the initial state when folded, the rear tether has its front end joined to the vicinity of the fold of the lateral tether to be folded in half, and its rear end joined to the upper panel, and is in a flat state. The pedestrian airbag according to claim 3, wherein a length dimension in the front-rear direction of the rear tether is set so that
前記カウルカバー部内における前記横テザーの前方側の部位に、
前記上壁部と前記下壁部とを連結するように、左右方向に沿って帯状に配設される第2横テザーが、配設されるとともに、
後端を前記第2横テザーに結合させ、前端を膨張完了時の前記カウルカバー部の前部側に結合させて、前記カウルカバー部における前部側の前方側への突出を抑制する前側テザーが、配設されていることを特徴とする請求項1乃至請求項4のいずれか1項に記載の歩行者用エアバッグ。
At a portion on the front side of the lateral tether in the cowl cover portion,
A second horizontal tether, which is arranged in a strip shape along the left-right direction, is provided so as to connect the upper wall portion and the lower wall portion, and
A front tether that connects a rear end to the second lateral tether and connects a front end to a front side of the cowl cover when the expansion is completed to suppress the frontward protrusion of the front side of the cowl cover. The pedestrian airbag according to any one of claims 1 to 4, wherein the airbag is provided.
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US20220250578A1 (en) * 2021-02-08 2022-08-11 Toyoda Gosei Co., Ltd. Pedestrian airbag device
JP2022121313A (en) * 2021-02-08 2022-08-19 豊田合成株式会社 Airbag device for pedestrian
US11708048B2 (en) * 2021-02-08 2023-07-25 Toyoda Gosei Co., Ltd. Pedestrian airbag device
JP7338649B2 (en) 2021-02-08 2023-09-05 豊田合成株式会社 Pedestrian airbag device

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