JP2012030614A - Air-bag device - Google Patents

Air-bag device Download PDF

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JP2012030614A
JP2012030614A JP2010169543A JP2010169543A JP2012030614A JP 2012030614 A JP2012030614 A JP 2012030614A JP 2010169543 A JP2010169543 A JP 2010169543A JP 2010169543 A JP2010169543 A JP 2010169543A JP 2012030614 A JP2012030614 A JP 2012030614A
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partition member
airbag
expansion
upstream
inflating
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JP5327158B2 (en
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Masashi Hotta
昌志 堀田
Yuji Sato
祐司 佐藤
Daisuke Yamamura
大輔 山村
Yukifumi Shibayama
幸史 柴山
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Toyoda Gosei Co Ltd
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Toyoda Gosei Co Ltd
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Priority to JP2010169543A priority Critical patent/JP5327158B2/en
Priority to EP11175182.2A priority patent/EP2412585B1/en
Priority to CN201410534457.0A priority patent/CN104401286B/en
Priority to US13/190,604 priority patent/US8608198B2/en
Priority to CN201110210767.3A priority patent/CN102371961B/en
Publication of JP2012030614A publication Critical patent/JP2012030614A/en
Priority to US14/013,321 priority patent/US8820785B2/en
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Publication of JP5327158B2 publication Critical patent/JP5327158B2/en
Priority to US14/445,577 priority patent/US9211862B2/en
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Abstract

PROBLEM TO BE SOLVED: To provide an air-bag device which can improve the characteristics of the load which a passenger receives through an airbag with a simple and low-cost configuration.SOLUTION: An expansion part 46 of the airbag 40, which is expanded by an expansion gas, is partitioned by a partition member 50 into an upstream-side expansion part 47 and a downstream-side expansion part 48. The partition member 50 is folded along a folding line 51 to be in a half-folded state in which opposed ends 52 opposed to each other are close to each other. The partition member 50 in the half-folded state is disposed in the expansion part 46 in a non-expanded state in the state in which the folding line 51 is positioned in the upstream side (left side of the drawing) with respect to the opposed ends 52. Furthermore, the partition member is coupled with the airbag 40 by both the opposing ends 52 and both ends in the direction along the folding line 51 (approximately vertical direction). The partition member 50 includes a slit-like inner opening 71 and a pressure adjusting valve 70 having a pair of valve parts 73 and 74 which are brought into contact and separated from each other in the vicinity of the inner opening 71.

Description

本発明は、衝突等により車両に衝撃が加わった場合にエアバッグを膨張させて、乗員をその衝撃から保護するエアバッグ装置に関するものである。   The present invention relates to an airbag device that inflates an airbag and protects an occupant from the impact when an impact is applied to a vehicle due to a collision or the like.

衝突等により車両に衝撃が加わった場合に、乗員をその衝撃から保護する装置として、エアバッグ装置が有効である。このエアバッグ装置は、袋状に形成されたエアバッグと、そのエアバッグ内に膨張用ガスを供給するインフレータとを備えている。   An airbag device is effective as a device for protecting an occupant from an impact when the vehicle is subjected to an impact due to a collision or the like. The airbag device includes an airbag formed in a bag shape and an inflator that supplies inflation gas into the airbag.

こうしたエアバッグ装置の一態様として、側突等による衝撃から乗員を保護するサイドエアバッグ装置がある。このサイドエアバッグ装置では、上記エアバッグが折り畳まれた状態でインフレータとともに、例えば車両用シートのシートバック(背もたれ)に組み込まれている。このサイドエアバッグ装置では、車両の側部を構成する部材(ボディサイド部)、例えばサイドドア等に側方から衝撃が加わると、インフレータから膨張用ガスがエアバッグ内に供給される。この膨張用ガスによりエアバッグが膨張展開し、一部をシートバック内に残した状態で車両用シートから飛び出す。このエアバッグは、車両用シートに着座した乗員とボディサイド部との間の狭い空間において、前方へ向けて膨張展開する。膨張展開したエアバッグが、乗員と車内側へ進入してくるボディサイド部との間に介在して乗員を拘束するとともに、衝撃のエネルギーを吸収し、乗員を上記衝撃から保護する。   As one aspect of such an airbag device, there is a side airbag device that protects an occupant from an impact caused by a side collision or the like. In this side airbag device, the airbag is folded together with an inflator, for example, incorporated in a seat back (backrest) of a vehicle seat. In this side airbag device, when an impact is applied from the side to a member (body side portion) that constitutes a side portion of the vehicle, such as a side door, inflation gas is supplied from the inflator into the airbag. The airbag is inflated and deployed by the inflation gas, and jumps out of the vehicle seat with a part left in the seat back. The airbag is inflated and deployed toward the front in a narrow space between the occupant seated on the vehicle seat and the body side portion. The inflated airbag is interposed between the occupant and the body side portion that enters the vehicle, restrains the occupant, absorbs impact energy, and protects the occupant from the impact.

上記サイドエアバッグ装置の一態様として、エアバッグ内が仕切られていないタイプ(以下「従来技術1という」)がある。
また、特許文献1には、サイドエアバッグ装置のほかの態様として、エアバッグを上部エアバッグと下部エアバッグとに仕切る仕切り部に調圧弁(圧力制御弁)を設け、この調圧弁(圧力制御弁)の作用により、下部エアバッグを上部エアバッグよりも先に膨張させるようにしたタイプ(以下「従来技術2という」)が提案されている。なお、部材名称に続くかっこ内の語句は、特許文献1で使用されている部材名称を示している。この従来技術2のサイドエアバッグ装置では、エアバッグはまず乗員の腰部の高さまで膨らみ、その後に胸部の高さまで膨らむため、より効率的な衝撃吸収を行うことができるとされている。
As an aspect of the side airbag device, there is a type in which the airbag is not partitioned (hereinafter referred to as “prior art 1”).
Further, in Patent Document 1, as another aspect of the side airbag device, a pressure regulating valve (pressure control valve) is provided in a partition portion that partitions the airbag into an upper airbag and a lower airbag, and the pressure regulating valve (pressure control valve) is provided. A type in which the lower airbag is inflated prior to the upper airbag by the action of the valve (hereinafter referred to as “prior art 2”) has been proposed. The phrase in parentheses following the member name indicates the member name used in Patent Document 1. In the side airbag device of this prior art 2, the airbag is first inflated to the height of the occupant's waist and then inflated to the height of the chest, so that more efficient shock absorption can be performed.

特開平10−67297号公報JP-A-10-67297

ところで、サイドエアバッグ装置では、側方からの衝撃によりボディサイド部が車内側へ進入し、そのボディサイド部によってエアバッグが乗員に押し付けられる。この押し付けに伴い、乗員はエアバッグを通じて衝撃の荷重を受ける。この荷重は、乗員がエアバッグから圧力を受ける面積(乗員のエアバッグ側の受圧面積)と、上記エアバッグの内圧との積によって表される。この荷重は、乗員を衝撃から保護する観点からは、ボディサイド部の進入開始後短時間で所定値に到達し、その後は、ボディサイド部の進入量(ストローク)に拘らず所定値に維持されることが望ましい。   By the way, in the side airbag device, the body side portion enters the vehicle interior due to an impact from the side, and the airbag is pressed against the occupant by the body side portion. Along with this pressing, the occupant receives an impact load through the airbag. This load is represented by the product of the area in which the occupant receives pressure from the airbag (the pressure receiving area on the airbag side of the occupant) and the internal pressure of the airbag. From the viewpoint of protecting the occupant from impact, this load reaches a predetermined value in a short time after the start of entry of the body side portion, and thereafter, is maintained at the predetermined value regardless of the amount of entry (stroke) of the body side portion. It is desirable.

しかし、上記従来技術1では、ボディサイド部の進入量(ストローク)の増加に伴い内圧及び受圧面積が増加することから、乗員がエアバッグから受ける荷重は、ボディサイド部の進入が進むにつれて徐々に増加する。荷重は、ボディサイド部がある程度進入してからでないと所定値に達しない。しかも、荷重は所定値に到達した後も増加し続け、最終的には、所定値を超過する。その結果、荷重が所定値に到達するまでは、衝撃からの乗員の充分な保護が開始されない。荷重が所定値に到達した後には、乗員はエアバッグを通じて、所定値よりも大きな荷重を受けることとなる。   However, in the above prior art 1, since the internal pressure and the pressure receiving area increase as the amount of entry (stroke) of the body side portion increases, the load that the occupant receives from the airbag gradually increases as the body side portion advances. To increase. The load does not reach a predetermined value until the body side part has entered to some extent. In addition, the load continues to increase after reaching the predetermined value, and eventually exceeds the predetermined value. As a result, sufficient protection of the occupant from impact is not started until the load reaches a predetermined value. After the load reaches a predetermined value, the occupant receives a load larger than the predetermined value through the airbag.

一方、特許文献1に記載された従来技術2では、調圧弁(圧力制御弁)の具体的構造が明らかにされていない。そのため、乗員がエアバッグから受ける荷重と、ボディサイド部の進入量(ストローク)との関係は不明である。   On the other hand, in the prior art 2 described in Patent Document 1, the specific structure of the pressure regulating valve (pressure control valve) is not clarified. Therefore, the relationship between the load that the occupant receives from the airbag and the approach amount (stroke) of the body side part is unknown.

なお、調圧弁を複雑な構成にすることで、荷重特性の向上を図ることも可能であるが、その場合にはエアバッグ装置のコスト上昇を伴う。
こうした問題は、上述したサイドエアバッグ装置のみならず、ほかの種類のエアバッグ装置にも共通して起こり得る。
Although it is possible to improve the load characteristics by making the pressure regulating valve complicated, in that case, the cost of the airbag device increases.
Such a problem may occur not only in the above-described side airbag device but also in other types of airbag devices.

本発明は、このような実情に鑑みてなされたものであって、その目的は、エアバッグを通じて乗員が受ける荷重の特性を、簡便かつ安価な構成で向上させることのできるエアバッグ装置を提供することにある。   The present invention has been made in view of such circumstances, and an object of the present invention is to provide an airbag device capable of improving the characteristics of a load received by an occupant through an airbag with a simple and inexpensive configuration. There is.

上記の目的を達成するために、請求項1に記載の発明は、膨張用ガスにより膨張するエアバッグの膨張部を区画部材により少なくとも上流側膨張部及び下流側膨張部に区画し、前記膨張部への前記膨張用ガスの供給期間の初期には閉弁して前記上流側膨張部から前記下流側膨張部への前記膨張用ガスの流通を規制し、同供給期間の途中から開弁して前記規制を解除する調圧弁を設けたエアバッグ装置であって、前記区画部材は、折り線に沿って折り返されることにより、相対向する対向端部を接近させてなる二つ折り状態にされ、前記二つ折り状態の区画部材は、前記折り線を前記対向端部よりも上流側に位置させた状態で非膨張展開状態の前記膨張部に配設され、さらに、前記両対向端部と、前記折り線に沿う方向の両端部とにおいて前記エアバッグに結合されており、前記調圧弁は、前記区画部材に形成されたスリット状の内開口部と、前記内開口部の周りに設けられて互いに接近及び離間する一対の弁体部とを備えることを要旨とする。   In order to achieve the above object, according to a first aspect of the present invention, an inflatable portion of an airbag inflated by an inflating gas is partitioned into at least an upstream inflatable portion and a downstream inflatable portion by a partition member, and the inflatable portion Is closed at the beginning of the supply period of the expansion gas to restrict the flow of the expansion gas from the upstream expansion section to the downstream expansion section, and is opened from the middle of the supply period. In the airbag apparatus provided with the pressure regulating valve for releasing the restriction, the partition member is folded along a fold line to be folded in two so that opposing opposite ends approach each other, The half-folded partition member is disposed in the inflated portion in a non-inflated and deployed state with the fold line positioned on the upstream side of the opposed end, and further, the opposed end and the folded end And both ends in the direction along the line The pressure regulating valve includes a slit-like inner opening formed in the partition member, and a pair of valve body portions provided around the inner opening and approaching and separating from each other. This is the gist.

また、上記調圧弁は、請求項2に記載の発明によるように、前記膨張用ガスの前記供給期間の途中からは、前記エアバッグによる乗員拘束に伴い加わる外力により開弁するものであってもよい。   Further, according to the invention described in claim 2, the pressure regulating valve may be opened from the middle of the supply period of the inflation gas by an external force applied in accordance with occupant restraint by the airbag. Good.

上記請求項1又は2に記載の発明の構成によれば、車両に対し、衝突等による衝撃が加わると、膨張用ガスが、まず上流側膨張部に供給されて、同上流側膨張部が膨張を開始する。膨張部内では、二つ折り状態の区画部材が、折り線を対向端部よりも上流側に位置させた状態で配設されている。しかも、その区画部材は、両対向端部の各々においてエアバッグに結合されるとともに、折り線に沿う方向の両端部の各々においてエアバッグに結合されている。そのため、上記のように上流側膨張部の膨張が開始すると、二つ折り状態の区画部材が引っ張られる。区画部材に対し、折り線に沿う方向や直交する方向にテンションが掛かって、区画部材が平面状態になろうとする。   According to the configuration of the first or second aspect of the invention, when an impact due to a collision or the like is applied to the vehicle, the expansion gas is first supplied to the upstream expansion portion, and the upstream expansion portion expands. To start. In the inflating portion, the two-folded partition member is arranged with the fold line positioned on the upstream side of the opposing end portion. And the partition member is couple | bonded with the airbag in each of both opposing edge parts, and is couple | bonded with the airbag in each of the both ends of the direction along a fold line. Therefore, when expansion of the upstream expansion portion starts as described above, the two-folded partition member is pulled. A tension is applied to the partition member in a direction along the fold line or in a direction orthogonal thereto, and the partition member tends to be in a planar state.

ただし、区画部材では、その全体が均一に緊張状態となるわけではない。上述した区画部材のエアバッグに対する結合態様から、上流側膨張部の膨張時の断面が、折り線に沿う方向の両端部近傍部分で曲率が大きく、それ以外の部分で曲率の小さな略楕円形状となるからである。こうした異形(非円形)の断面であることから、区画部材の折り線に沿う方向の両端部近傍部分には、それらの間の部分(中間部分)に比べテンションが掛かりにくい。そのため、区画部材の上記両端部近傍部分は、中間部分が略平面状の緊張状態となったときにも、折り線を対向端部よりも上流側に位置させ、かつ二つ折り状態よりは開いた屈曲状態となる。   However, the whole partition member is not in a uniform tension state. From the coupling mode of the partition member to the airbag described above, the section of the upstream inflatable portion when inflated has a substantially elliptical shape with a large curvature in the vicinity of both ends in the direction along the fold line and a small curvature in the other portions. Because it becomes. Because of such an irregular (non-circular) cross section, tension is less likely to be applied to the vicinity of both end portions in the direction along the folding line of the partition member than the portion (intermediate portion) between them. Therefore, even when the intermediate portion is in a substantially flat tension state, the fold line is positioned upstream of the opposing end portion and opened more than the two-folded state in the vicinity of both end portions of the partition member. It will be bent.

ここで、スリットに沿う方向のテンションが、スリットに直交する方向のテンションに比べて充分強い場合には、内開口部が、開く方向よりも閉じる方向に強く引っ張られて閉じる。   Here, when the tension in the direction along the slit is sufficiently stronger than the tension in the direction perpendicular to the slit, the inner opening is closed by being pulled more strongly in the closing direction than in the opening direction.

また、スリットに沿う方向のテンションが、スリットに直交する方向のテンションに比べて充分強くない場合には、内開口部が、閉じる方向よりも開く方向に強く引っ張られて開くおそれがある。しかし、この場合であっても、両弁体部が少なくとも自身の先端部において閉じられる。これは、区画部材の上記中間部分が平面状に緊張することで内開口部が引っ張られて、これを開かせようとする力が作用したとしても、その力は、内開口部において最も大きく、内開口部から遠ざかるに従い小さくなり、両弁体部の先端部において最小となるからである。その結果、上流側膨張部内の膨張用ガスは、両弁体部間及び内開口部を通って下流側膨張部へ流出することを規制される。   Further, when the tension in the direction along the slit is not sufficiently stronger than the tension in the direction perpendicular to the slit, the inner opening may be pulled more strongly in the opening direction than in the closing direction. However, even in this case, both valve body portions are closed at least at the front end portion thereof. This is because even if the force that tries to open the inner opening is applied by tensioning the intermediate portion of the partition member in a flat shape, the force is the largest in the inner opening, This is because the distance from the inner opening decreases as the distance from the inner opening decreases, and is minimized at the distal ends of both valve bodies. As a result, the expansion gas in the upstream expansion portion is restricted from flowing out between the valve body portions and through the inner opening to the downstream expansion portion.

上記の規制が行われている上流側膨張部に膨張用ガスが供給され続けることにより、同上流側膨張部の内圧が上昇する。この際、膨張部が少なくとも上流側膨張部及び下流側膨張部に区画されていることから、上流側膨張部の容積は、膨張部が区画されない場合(従来技術1)のその膨張部の容積よりも小さい(ただし、従来技術1のエアバッグの膨張時における容積と、本願の膨張部の膨張時における全容積とが略同じである場合)。そのため、上流側膨張部の内圧は、膨張部が区画されない場合よりも早く上昇を開始し、しかも高くなる。   By continuing to supply the expansion gas to the upstream expansion portion where the above-described regulation is performed, the internal pressure of the upstream expansion portion increases. At this time, since the expansion part is partitioned into at least an upstream expansion part and a downstream expansion part, the volume of the upstream expansion part is larger than the volume of the expansion part when the expansion part is not partitioned (prior art 1). (However, the volume when the airbag of the prior art 1 is inflated and the total volume when the inflated portion of the present application is inflated are substantially the same). For this reason, the internal pressure of the upstream inflating portion starts to rise and becomes higher than when the inflating portion is not partitioned.

一方、前記衝撃により、車両構成部材が車内側へ進入し、エアバッグが乗員に押し付けられると、同乗員はエアバッグによって拘束される。膨張部では上流側膨張部のみが膨張していることから、乗員が膨張部の圧力を受けながら接触する箇所は上流側膨張部のみである。そのため、乗員が膨張部の圧力を受ける面の面積(乗員の膨張部側の受圧面積)は、上流側膨張部の圧力を受ける面の面積(乗員の上流側膨張部側の受圧面積)と同じであって小さい。ただし、この上流側膨張部側の受圧面積は、車両構成部材の車内側への進入が進むにつれて増大する。   On the other hand, when the vehicle component enters the vehicle interior due to the impact and the airbag is pressed against the occupant, the occupant is restrained by the airbag. Since only the upstream inflatable portion is inflated in the inflatable portion, the upstream inflatable portion is the only place where the occupant contacts while receiving the pressure of the inflatable portion. Therefore, the area of the surface on which the occupant receives the pressure of the inflatable portion (pressure receiving area on the side of the inflating portion of the occupant) is the same as the area of the surface on which the pressure of the upstream inflating portion receives the pressure (the pressure receiving area on the upstream side of the occupant). It is small. However, the pressure receiving area on the upstream expansion portion side increases as the vehicle component advances toward the vehicle interior side.

乗員が膨張部を通じて受ける衝撃の荷重は、受圧面積と内圧との積によって表されるところ、この荷重は、膨張用ガス供給期間の初期の早い時期から増加し、乗員を衝撃から保護するための所定値に早く到達する。   The impact load that the occupant receives through the inflatable part is expressed by the product of the pressure receiving area and the internal pressure. This load increases from the early stage of the expansion gas supply period to protect the occupant from the impact. The predetermined value is reached early.

膨張部への膨張用ガスの供給期間の途中からは、乗員拘束に伴い加わる外力によって膨張部が押圧されて変形し、区画部材に掛かるテンションが変化する。また、膨張部の変形に伴い上流側膨張部の内圧がさらに上昇して、区画部材の上記中間部分が下流側膨張部側へ押圧されて、同中間部分に掛かるテンションが変化するとともに、区画部材の上記両端部近傍部分が押圧されて下流側膨張部側へ膨らむように変形する。上記両端部近傍部分は、上述したように乗員拘束前には、折り線を対向端部よりも上流側に位置させた屈曲状態となっている。乗員拘束時には、区画部材は乗員拘束前の形状から反転したような形状に変形する。区画部材のこうした形状変化(反転)により、上記中間部分においてテンションの変化が容易に発生する。そして、このテンションの変化により、内開口部の変形や、弁体部の作動が許容される。   From the middle of the supply period of the inflation gas to the inflatable portion, the inflatable portion is pressed and deformed by an external force applied along with passenger restraint, and the tension applied to the partition member changes. In addition, the internal pressure of the upstream inflating portion further increases with the deformation of the inflating portion, the intermediate portion of the partition member is pressed toward the downstream inflating portion, the tension applied to the intermediate portion changes, and the partition member The portion in the vicinity of both end portions is pressed and deformed so as to swell toward the downstream side expansion portion. As described above, the vicinity of the both end portions is in a bent state in which the fold line is positioned on the upstream side of the opposite end portion before restraining the occupant. When the occupant is restrained, the partition member is deformed into a shape that is inverted from the shape before the occupant restraint. Such a change (inversion) of the shape of the partition member easily causes a change in tension in the intermediate portion. The change in tension allows deformation of the inner opening and operation of the valve body.

このような状況のもと、内開口部及び両弁体部間がともに開かれた状態になると、上記規制が解除される。この解除により、上流側膨張部から下流側膨張部へ膨張用ガスが流出し、上流側膨張部の内圧が低下する。乗員の上流側膨張部側の受圧面積は、車両構成部材の車内側への進入に応じて増大する。   Under such circumstances, when the inner opening and the valve body are both opened, the restriction is released. By this release, the expansion gas flows out from the upstream expansion portion to the downstream expansion portion, and the internal pressure of the upstream expansion portion is reduced. The pressure-receiving area on the upstream expansion portion side of the occupant increases as the vehicle component enters the vehicle interior.

また、上記膨張用ガスにより下流側膨張部が膨張を開始し、それに伴い同下流側膨張部の内圧が上昇し始める。また、内圧の上昇から少し遅れて、車両構成部材により膨張部が、上流側膨張部に加え下流側膨張部においても乗員に押し付けられて、乗員がより拘束されるようになり、乗員が下流側膨張部の圧力を受ける面の面積(乗員の下流側膨張部側の受圧面積)が増加し始める。   Further, the downstream side expansion portion starts to expand due to the expansion gas, and accordingly, the internal pressure of the downstream side expansion portion starts to increase. Further, with a slight delay from the rise of the internal pressure, the inflating portion is pressed against the occupant by the vehicle component member at the downstream inflating portion in addition to the upstream inflating portion, so that the occupant is further restrained, and the occupant is downstream The area of the surface that receives the pressure of the inflating portion (the pressure receiving area on the inflating portion downstream side of the occupant) begins to increase.

なお、上流側膨張部の内圧と下流側膨張部の内圧とは最終的には等しくなる。
上記のように、調圧弁の開弁後には、上流側膨張部の内圧が低下するとともに下流側膨張部の内圧が上昇する。また、乗員の上流側膨張部側の受圧面積と、下流側膨張部側の受圧面積とが時間差をもって増加する。このため、調圧弁の開弁後に乗員が膨張部の全体から受ける荷重、すなわち、上流側膨張部から受ける荷重と下流側膨張部から受ける荷重との合計を、単に、エアバッグを単一の膨張部により構成し、かつ調圧弁を設けない場合(従来技術1がこれに該当する)の荷重の最大値よりも小さな値(所定値)に維持することが可能となる。
Note that the internal pressure of the upstream expansion portion and the internal pressure of the downstream expansion portion finally become equal.
As described above, after opening the pressure regulating valve, the internal pressure of the upstream side expansion portion decreases and the internal pressure of the downstream side expansion portion increases. Further, the pressure receiving area on the upstream expansion portion side of the occupant and the pressure receiving area on the downstream expansion portion side increase with a time difference. For this reason, the load that the occupant receives from the entire inflating part after opening the pressure regulating valve, that is, the total of the load that is received from the upstream inflating part and the load that is received from the downstream inflating part is simply expanded to a single inflating the airbag. It is possible to maintain a value (predetermined value) smaller than the maximum value of the load in the case where the pressure control valve is not provided (conventional technology 1 corresponds to this).

このように、請求項1に記載の発明によれば、内開口部と、一対の弁体部といった簡単かつ安価な構造でありながら、膨張部への膨張用ガスの供給期間の初期には閉弁し、同供給期間の途中から開弁する調圧弁を成立させることが可能となる。そして、この調圧弁の作動により、エアバッグを通じて乗員が受ける荷重の特性を、短時間で所定値に到達し、その後は所定値に維持されるといった、乗員を適切に拘束して保護するうえで好適な特性にすることが可能となる。   As described above, according to the first aspect of the present invention, the structure is closed at the beginning of the supply period of the expansion gas to the expansion portion while having a simple and inexpensive structure such as the inner opening portion and the pair of valve body portions. Therefore, it is possible to establish a pressure regulating valve that opens from the middle of the supply period. And by the operation of this pressure regulating valve, the characteristics of the load received by the occupant through the airbag reach a predetermined value in a short time, and then are maintained at the predetermined value in order to appropriately restrain and protect the occupant. It is possible to obtain suitable characteristics.

請求項3に記載の発明は、請求項1又は2に記載の発明において、前記区画部材は、2つの部材の端縁同士を合致させた状態で端部同士を帯状に重ね合わせ、さらに同両部材を、非重ね合わせ部と重ね合わせ部との境界部分で結合することにより形成され、前記内開口部は、前記両部材の結合部分の一部について結合を解除させることにより形成され、前記重ね合わせ部において前記内開口部に対応する箇所が前記両弁体部とされることを要旨とする。   The invention according to claim 3 is the invention according to claim 1 or 2, wherein the partition member is configured such that the end portions of the two members are overlapped with each other in a state of matching the edges of the two members, and the both The member is formed by coupling at a boundary portion between the non-overlapping portion and the overlapping portion, and the inner opening is formed by releasing the coupling of a part of the coupling portion of the both members, and the overlapping The gist is that a portion corresponding to the inner opening portion in the mating portion is the both valve body portions.

上記の構成によれば、区画部材は、2つの部材の端縁同士を合致させた状態で端部同士を帯状に重ね合わせ、さらに同両部材を、非重ね合わせ部と重ね合わせ部との境界部分で結合することにより形成される。この結合部分の一部の結合が解除される(両部材が結合されない)ことにより、内開口部が形成される。また、重ね合わせ部において内開口部に対応する箇所が両弁体部とされる。このように、2つの部材における非重ね合わせ部と重ね合わせ部との境界部分を、一部を残した状態で結合することにより、区画部材、内開口部及び両弁体部の各々が一度に形成される。内開口部の形成、及び両弁体部の形成のために特別な作業は不要である。   According to the above configuration, the partition member overlaps the end portions in a band shape in a state in which the end edges of the two members are matched, and the both members are separated from each other by the boundary between the non-overlapping portion and the overlapping portion. It is formed by joining together. An inner opening is formed by releasing the coupling of a part of the coupling portion (both members are not coupled). In addition, a portion corresponding to the inner opening in the overlapping portion is a double valve body portion. In this way, by connecting the boundary portion between the non-overlapping portion and the overlapping portion of the two members in a state where a part is left, each of the partition member, the inner opening portion, and the both valve body portions is formed at a time. It is formed. No special work is required for the formation of the inner opening and the formation of both valve bodies.

特に、両弁体部は区画部材に対し一体となっている。そのため、両弁体部が区画部材とは異なる部材からなる場合に比べ、部品点数が少なくてすむばかりか、同部材を区画部材に結合する作業が不要である。   In particular, both valve bodies are integrated with the partition member. Therefore, compared with the case where both valve body parts consist of members different from the partition member, not only the number of parts is reduced, but the operation of connecting the members to the partition member is unnecessary.

請求項4に記載の発明は、請求項1〜3のいずれか1つに記載の発明において、前記区画部材は、平面状態となったとき、前記折り線に沿う方向の長さが、同折り線に直交する方向の長さよりも長くなるように形成されており、前記内開口部は、前記折り線に交差する方向に沿って設けられていることを要旨とする。   According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, when the partition member is in a planar state, the length in the direction along the fold line is the same. It is formed so that it may become longer than the length of the direction orthogonal to a line, and it makes it a summary that the said inner opening part is provided along the direction which cross | intersects the said fold line.

上記の構成によれば、上流側膨張部の膨張時であって、乗員を拘束する前の状態では、区画部材の中間部分にテンションが掛かって同中間部分が平面状態になろうとする。ここで、区画部材は、折り線に沿う方向に、同折り線に直交する方向よりも長く形成されている。このことから、短い方向(折り線に直交する方向)に対し、長い方向(折り線に沿う方向)に対するよりも強いテンションが掛かる。請求項4に記載の発明では、内開口部が、この強いテンションの掛かる方向に沿って延びている。そのため、内開口部が一層閉じられやすくなる。   According to the above configuration, when the upstream inflating portion is inflated and before the occupant is restrained, the intermediate portion of the partition member is tensioned and the intermediate portion tends to be in a flat state. Here, the partition member is formed longer in the direction along the fold line than in the direction orthogonal to the fold line. For this reason, a stronger tension is applied to the short direction (the direction perpendicular to the fold line) than to the long direction (the direction along the fold line). In the invention described in claim 4, the inner opening extends along the direction in which the strong tension is applied. Therefore, it becomes easier to close the inner opening.

請求項5に記載の発明は、請求項1〜4のいずれか1つに記載の発明において、前記両弁体部は、前記膨張部の膨張前には前記上流側膨張部に配置されていることを要旨とする。   According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the valve body portions are disposed in the upstream inflating portion before the inflating portion is inflated. This is the gist.

上記の構成によれば、上流側膨張部の膨張時であって、乗員を拘束する前の状態では、上流側膨張部に位置する両弁体部に対し、その重なり方向についての両側から上流側膨張部の内圧が加わる。両弁体部は、この内圧により互いに密着し、両弁体部間での膨張用ガスの流通を規制する自己シール状態となる。   According to the above configuration, in the state before the occupant is restrained when the upstream inflating portion is inflated, the both valve body portions located in the upstream inflating portion are upstream from both sides in the overlapping direction. The internal pressure of the expansion part is applied. Both valve body portions are brought into close contact with each other by this internal pressure, and are in a self-sealing state that regulates the flow of the expansion gas between the both valve body portions.

乗員拘束により膨張部の外形が変形して区画部材に掛かるテンションが変化し、また、上流側膨張部の内圧が上昇して区画部材に掛かるテンションが変化すると、両弁体部が反転し、内開口部を通じて下流側膨張部側へ押し出される。両弁体部の上記動作に伴い内開口部が開かれ、上流側膨張部内の膨張用ガスは内開口部及び両弁体部間を通って下流側膨張部へ流出するようになる。   When the tension applied to the partition member changes due to deformation of the outer shape of the expansion part due to the restraint of the occupant, and when the internal pressure of the upstream expansion part rises and the tension applied to the partition member changes, both valve body parts reverse, It is pushed out to the downstream inflating part side through the opening. With the above operation of both valve body portions, the inner opening portion is opened, and the expansion gas in the upstream side expansion portion flows out between the inner opening portion and both valve body portions to the downstream side expansion portion.

本発明のエアバッグ装置によれば、エアバッグを通じて乗員が受ける荷重の特性を、簡便かつ安価な構成で向上させることができる。   According to the airbag device of the present invention, it is possible to improve the characteristics of the load received by the occupant through the airbag with a simple and inexpensive configuration.

本発明をサイドエアバッグ装置に具体化した第1実施形態において、同サイドエアバッグ装置が装備された車両用シートを乗員とともに示す側面図。In 1st Embodiment which materialized this invention to the side airbag apparatus, the side view which shows the vehicle seat equipped with the same side airbag apparatus with a passenger | crew. 第1実施形態において、車両用シート、乗員及びボディサイド部の位置関係を示す正断面図。In 1st Embodiment, the front sectional view which shows the positional relationship of a vehicle seat, a passenger | crew, and a body side part. 第1実施形態において、車両用シート、乗員及びボディサイド部の位置関係を示す平断面図。In 1st Embodiment, the plane sectional view which shows the positional relationship of a vehicle seat, a passenger | crew, and a body side part. 第1実施形態において、シートバックの収納部に組み込まれたエアバッグモジュールを、ボディサイド部とともに示す部分平断面図。In the first embodiment, a partial plan sectional view showing an airbag module incorporated in a seat back storage portion together with a body side portion. 第1実施形態において、エアバッグが非膨張展開状態にされたエアバッグモジュールを、車両用シート及び乗員とともに示す部分側面図。In 1st Embodiment, the partial side view which shows the airbag module by which the airbag was made into the non-expanded deployment state with a vehicle seat and a passenger | crew. 第1実施形態において、図5の非膨張展開状態のエアバッグが車幅方向の中央部分で切断されたエアバッグモジュールを、車両用シート及び乗員とともに示す部分側断面図。FIG. 6 is a partial side cross-sectional view showing the airbag module, in which the airbag in the non-inflated and deployed state in FIG. 第1実施形態において、エアバッグが非膨張展開状態にされたエアバッグモジュールの上部を斜め上後方から見た状態を示す部分斜視図。The fragmentary perspective view which shows the state which looked at the upper part of the airbag module by which 1st Embodiment was made into the non-expanding deployment state from the diagonally upper back. 図5のA−A線に沿った区画部材等の断面構造を示す部分断面図。FIG. 6 is a partial cross-sectional view illustrating a cross-sectional structure of a partition member and the like along the line AA in FIG. 5. 第1実施形態において、エアバッグが膨張して区画部材が平面状に緊張したエアバッグモジュールの内部構造を示す縦断面図。In 1st Embodiment, the longitudinal cross-sectional view which shows the internal structure of the airbag module which the airbag expanded and the partition member was tension | tensile_strength planarly. 第1実施形態を示す図であり、(A)は、屈曲状態の区画部材における調圧弁の近傍部分を示す部分斜視図、(B)は、平面状に緊張した区画部材における調圧弁の近傍部分を示す部分斜視図。It is a figure which shows 1st Embodiment, (A) is the fragmentary perspective view which shows the vicinity part of the pressure regulation valve in the division member of a bending state, (B) is the vicinity part of the pressure regulation valve in the division member strained planarly. FIG. (A)〜(C)は、第1実施形態の調圧弁の動作を示す説明図。(A)-(C) are explanatory drawings which show operation | movement of the pressure regulation valve of 1st Embodiment. 第1実施形態において、車内側へ進入するボディサイド部によってエアバッグが乗員に押し付けられる際の内圧、受圧面積及び荷重の各変化態様を示す特性図。The characteristic view which shows each change aspect of an internal pressure at the time of an airbag being pressed on a passenger | crew by the body side part which approachs a vehicle inner side, pressure receiving area, and a load in 1st Embodiment. 図4の状態からエアバッグが一部をシートバック内に残して車両用シートから飛び出して膨張展開した状態を示す部分平断面図。FIG. 5 is a partial plan cross-sectional view showing a state in which the airbag is left in a seat back part of the state shown in FIG. 本発明を具体化した第2実施形態を示す図であり、非膨張展開状態のエアバッグが車幅方向の中央部分で切断されたエアバッグモジュールを、車両用シート及び乗員とともに示す部分側断面図。It is a figure which shows 2nd Embodiment which actualized this invention, and is the fragmentary sectional side view which shows the airbag module by which the airbag of the non-expanded deployment state was cut | disconnected by the center part of the vehicle width direction with a vehicle seat and a passenger | crew . 図14のC−C線に沿った区画部材等の断面構造を示す部分断面図。The fragmentary sectional view which shows sectional structure of the division member etc. along CC line of FIG. 第2実施形態において、平面状に緊張した区画部材における調圧弁の近傍部分を示す部分斜視図。In 2nd Embodiment, the fragmentary perspective view which shows the vicinity part of the pressure regulation valve in the division member strained planarly. (A)〜(C)は、第2実施形態の調圧弁の動作を示す説明図。(A)-(C) are explanatory drawings which show operation | movement of the pressure regulation valve of 2nd Embodiment. 本発明を具体化した第3実施形態を示す図であり、非膨張展開状態のエアバッグが車幅方向の中央部分で切断されたエアバッグモジュールを、車両用シート及び乗員とともに示す部分側断面図。It is a figure which shows 3rd Embodiment which actualized this invention, and is the fragmentary sectional side view which shows the airbag module by which the airbag of the non-expanded deployment state was cut | disconnected by the center part of the vehicle width direction with a vehicle seat and a passenger | crew . 第3実施形態において、エアバッグが非膨張展開状態にされたエアバッグモジュールの上部を斜め上後方から見た状態を示す部分斜視図。In 3rd Embodiment, the fragmentary perspective view which shows the state which looked at the upper part of the airbag module by which the airbag was made into the non-expanded deployment state from diagonally upper back. 図18のD−D線に沿った区画部材等の断面構造を示す部分断面図。The fragmentary sectional view which shows sectional structure, such as a division member along the DD line | wire of FIG. 図18のE−E線に沿った区画部材等の断面構造を示す部分断面図。The fragmentary sectional view which shows sectional structure, such as a division member along the EE line of FIG. 第3実施形態において、平面状に緊張した区画部材における調圧弁の近傍部分を示す部分斜視図。In 3rd Embodiment, the fragmentary perspective view which shows the vicinity part of the pressure regulation valve in the division member strained planarly. 第3実施形態において、エアバッグが膨張して区画部材が平面状に緊張したエアバッグモジュールの内部構造を示す縦断面図。In 3rd Embodiment, the longitudinal cross-sectional view which shows the internal structure of the airbag module which the airbag expanded and the partition member was tensioned planarly. 第3実施形態において、膨張途中の上流側膨張部内で調圧弁が閉弁する様子を模式的に示す平断面図。In 3rd Embodiment, the plane sectional view which shows typically a mode that a pressure regulation valve closes in the upstream expansion part in the middle of expansion | swelling. 第3実施形態において、両弁体部が反転して下流側膨張部内で閉弁する様子を模式的に示す平断面図。In 3rd Embodiment, the plane sectional view which shows typically a mode that both valve body parts reverse and close in a downstream expansion part. 第3実施形態において、乗員拘束に伴う外力により調圧弁が下流側膨張部内で開弁する様子を模式的に示す平断面図。In 3rd Embodiment, the plane sectional view which shows typically a mode that a pressure regulation valve opens in a downstream expansion part with the external force accompanying passenger | crew restraint. 本発明を具体化した第4実施形態を示す図であり、非膨張展開状態のエアバッグが車幅方向の中央部分で切断されたエアバッグモジュールを、車両用シート及び乗員とともに示す部分側断面図。It is a figure which shows 4th Embodiment which actualized this invention, and is the fragmentary sectional side view which shows the airbag module by which the airbag of the non-expanded deployment state was cut | disconnected by the center part of the vehicle width direction with a vehicle seat and a passenger | crew . (A)は図27のF−F線に沿った区画部材等の断面構造を示す部分断面図、(B)は同図27のG−G線に沿った区画部材等の断面構造を示す部分断面図。(A) is a partial cross-sectional view showing a cross-sectional structure of the partition member and the like along the line FF in FIG. 27, and (B) is a part showing a cross-sectional structure of the partition member and the like along the line GG in FIG. Sectional drawing. 第4実施形態において、平面状に緊張した区画部材における調圧弁の近傍部分を示す部分斜視図。In 4th Embodiment, the fragmentary perspective view which shows the vicinity part of the pressure regulation valve in the division member strained planarly. 第1実施形態の区画部材を1枚の布片によって構成した調圧弁の別例を示す部分斜視図。The fragmentary perspective view which shows the other example of the pressure regulation valve which comprised the division member of 1st Embodiment with the cloth piece of 1 sheet. 第3実施形態の区画部材を1枚の布片によって構成した調圧弁の別例を示す部分斜視図。The fragmentary perspective view which shows the other example of the pressure regulation valve which comprised the division member of 3rd Embodiment by one piece of cloth. (A),(B)は、本発明を、第1〜第4実施形態とは異なるタイプのサイドエアバッグ装置に適用した別例を示す側面図。(A), (B) is a side view which shows the other example which applied this invention to the side airbag apparatus of the type different from 1st-4th embodiment. (A),(B)は、同じく本発明を、第1〜第4実施形態とは異なるタイプのサイドエアバッグ装置に適用した別例を示す側面図。(A) and (B) are side views showing another example in which the present invention is similarly applied to a side airbag device of a type different from the first to fourth embodiments. (A),(B)は、同じく本発明を、第1〜第4実施形態とは異なるタイプのサイドエアバッグ装置に適用した別例を示す側面図。(A) and (B) are side views showing another example in which the present invention is similarly applied to a side airbag device of a type different from the first to fourth embodiments. 本発明を、膝保護用エアバッグ装置に適用した別例を示す図であり、同エアバッグが装備されたステアリングコラムの近傍部分を、乗員の下肢とともに示す部分側面図。It is a figure which shows the other example which applied this invention to the airbag apparatus for knee protection, and is a partial side view which shows the vicinity part of the steering column equipped with the airbag with a passenger | crew's leg. 図35の別例において、エアバッグが非膨張展開状態にされたエアバッグモジュールを示す正面図。The front view which shows the airbag module in which the airbag was made into the non-expanded deployment state in another example of FIG.

(第1実施形態)
以下、本発明を車両用サイドエアバッグ装置に具体化した第1実施形態について、図1〜図13を参照して説明する。
(First embodiment)
DESCRIPTION OF EMBODIMENTS Hereinafter, a first embodiment in which the present invention is embodied in a vehicle side airbag device will be described with reference to FIGS.

なお、以下の記載においては、車両の前進方向を前方として説明し、車両の後進方向を後方として説明する。また、以下の記載における上下方向は車両の上下方向を意味し、左右方向は車両の車幅方向であって車両前進時の左右方向と一致するものとする。   In the following description, the forward direction of the vehicle will be described as the front, and the reverse direction of the vehicle will be described as the rear. Further, in the following description, the vertical direction means the vertical direction of the vehicle, and the horizontal direction is the vehicle width direction of the vehicle and coincides with the horizontal direction when the vehicle moves forward.

図2及び図3の少なくとも一方に示すように、車両10においてボディサイド部11の車内側(図2の右側、図3の上側)の近傍には車両用シート12が配置されている。ここで、ボディサイド部11とは、車両10の側部に配置された車両構成部材を指し、主としてドア、ピラー等がこれに該当する。例えば、前席に対応するボディサイド部11は、フロントドア、センターピラー(Bピラー)等である。また、後席に対応するボディサイド部11は、サイドドア(リヤドア)の後部、Cピラー、タイヤハウスの前部、リヤクォータ等である。   As shown in at least one of FIGS. 2 and 3, a vehicle seat 12 is arranged in the vicinity of the vehicle side of the body side portion 11 (the right side in FIG. 2 and the upper side in FIG. 3) in the vehicle 10. Here, the body side part 11 refers to a vehicle constituent member arranged on the side part of the vehicle 10, and mainly corresponds to a door, a pillar, and the like. For example, the body side part 11 corresponding to the front seat is a front door, a center pillar (B pillar), or the like. The body side portion 11 corresponding to the rear seat is a rear portion of a side door (rear door), a C pillar, a front portion of a tire house, a rear quarter, and the like.

車両用シート12は、シートクッション(座部)13と、そのシートクッション13の後側から起立し、かつ傾き調整機構(図示略)により傾斜角度を調整されるシートバック(背もたれ)14とを備えて構成されている。   The vehicle seat 12 includes a seat cushion (seat portion) 13 and a seat back (backrest) 14 that stands up from the rear side of the seat cushion 13 and whose inclination angle is adjusted by an inclination adjustment mechanism (not shown). Configured.

次に、シートバック14における車外側の側部の内部構造について説明する。
シートバック14内には、その骨格をなすシートフレームが配置されている。シートフレームの一部は、図4に示すように、シートバック14内の車外側(図4では下側)部分に配置されており、この部分(以下「サイドフレーム部15」という)は、金属板を曲げ加工することによって形成されている。サイドフレーム部15を含むシートフレームの前側には、ウレタンフォーム等の弾性材からなるシートパッド16が配置されている。また、シートフレームの後側には、合成樹脂等によって形成された硬質のバックボード17が配置されている。なお、シートパッド16は表皮によって被覆されているが、図4ではその表皮の図示が省略されている。後述する図13についても同様である。
Next, the internal structure of the side portion on the vehicle outer side in the seat back 14 will be described.
A seat frame that forms the skeleton is disposed in the seat back 14. As shown in FIG. 4, a part of the seat frame is disposed on the vehicle outer side (lower side in FIG. 4) in the seat back 14, and this part (hereinafter referred to as “side frame part 15”) is made of metal. It is formed by bending a plate. A seat pad 16 made of an elastic material such as urethane foam is disposed on the front side of the seat frame including the side frame portion 15. A hard backboard 17 made of synthetic resin or the like is disposed on the rear side of the seat frame. Although the seat pad 16 is covered with a skin, the skin is not shown in FIG. The same applies to FIG. 13 described later.

シートパッド16内において、サイドフレーム部15の車外側近傍には収納部18が設けられている。収納部18の位置は、車両用シート12に着座した乗員Pの斜め後方近傍となる(図3参照)。この収納部18には、サイドエアバッグ装置の主要部をなすエアバッグモジュールAMが組み込まれている。   In the seat pad 16, a storage portion 18 is provided in the vicinity of the vehicle exterior side of the side frame portion 15. The position of the storage portion 18 is in the vicinity of the rear of the occupant P seated on the vehicle seat 12 (see FIG. 3). An air bag module AM that forms the main part of the side air bag device is incorporated in the storage portion 18.

収納部18の車外側かつ前側の角部からは、斜め前車外側に向けてスリット19が延びている。シートパッド16の前側の角部16Cとスリット19とによって挟まれた箇所(図4において二点鎖線の枠で囲んだ箇所)は、後述するエアバッグ40によって破断される破断予定部21を構成している。   A slit 19 extends from a corner on the vehicle outer side and front side of the storage unit 18 toward the diagonal front vehicle outer side. A portion sandwiched between the corner 16C on the front side of the seat pad 16 and the slit 19 (a portion surrounded by a two-dot chain line in FIG. 4) constitutes a planned fracture portion 21 to be broken by the airbag 40 described later. ing.

上記シートバック14に組み込まれるエアバッグモジュールAMは、インフレータアセンブリ30及びエアバッグ40を主要な構成部材として備えている。
次に、これらの構成部材の各々について説明する。ここで、第1実施形態では、エアバッグモジュールAM及びその構成部材について「上下方向」、「前後方向」というときは、図1に示すように、車両用シート12のシートバック14を基準としている。シートバック14の起立する方向を「上下方向」とし、シートバック14の厚み方向を「前後方向」としている。通常、シートバック14は後方へ多少傾斜した状態で使用されることから、「上下方向」は厳密には鉛直方向ではなく、多少傾斜している。同様に、「前後方向」は厳密には水平方向ではなく、多少傾斜している。
The airbag module AM incorporated in the seat back 14 includes an inflator assembly 30 and an airbag 40 as main components.
Next, each of these structural members will be described. Here, in the first embodiment, when the airbag module AM and its constituent members are referred to as “vertical direction” and “front-rear direction”, as shown in FIG. 1, the seat back 14 of the vehicle seat 12 is used as a reference. . The direction in which the seat back 14 stands is “up-down direction”, and the thickness direction of the seat back 14 is “front-rear direction”. Usually, since the seat back 14 is used in a state of being slightly inclined rearward, the “vertical direction” is not strictly a vertical direction but is slightly inclined. Similarly, the “front-rear direction” is not strictly a horizontal direction but is slightly inclined.

<インフレータアセンブリ30>
図4及び図5の少なくとも一方に示すように、インフレータアセンブリ30は、ガス発生源としてのインフレータ31と、そのインフレータ31の外側に装着されたリテーナ32とを備えて構成されている。第1実施形態では、インフレータ31として、パイロタイプと呼ばれるタイプが採用されている。インフレータ31は略円柱状をなしており、その内部には、膨張用ガスを発生するガス発生剤(図示略)が収容されている。インフレータ31の長さ方向についての一方の端部(第1実施形態では下端部)には、同インフレータ31への制御信号の印加配線となるハーネス(図示略)が接続されている。
<Inflator assembly 30>
As shown in at least one of FIGS. 4 and 5, the inflator assembly 30 includes an inflator 31 as a gas generation source and a retainer 32 attached to the outside of the inflator 31. In the first embodiment, a type called a pyrotype is employed as the inflator 31. The inflator 31 has a substantially cylindrical shape, and a gas generating agent (not shown) that generates an expansion gas is accommodated therein. A harness (not shown) serving as a control signal application wiring to the inflator 31 is connected to one end (the lower end in the first embodiment) of the inflator 31 in the length direction.

なお、インフレータ31としては、上記ガス発生剤を用いたパイロタイプに代えて、高圧ガスの充填された高圧ガスボンベの隔壁を火薬等によって破断してガスを噴出させるタイプ(ハイブリッドタイプ)が用いられてもよい。   As the inflator 31, a type (hybrid type) that breaks the partition wall of a high-pressure gas cylinder filled with a high-pressure gas with an explosive or the like instead of the pyro-type using the gas generating agent (hybrid type) is used. Also good.

一方、リテーナ32は、ディフューザとして機能するとともに、上記インフレータ31をエアバッグ40と一緒にサイドフレーム部15に締結する機能を有する部材である。リテーナ32の大部分は、金属板等の板材を曲げ加工等することによって略筒状に形成されている。リテーナ32には窓部33が設けられており、インフレータ31から噴出された膨張用ガスの多くが、この窓部33を通じてリテーナ32の外部へ噴き出される。   On the other hand, the retainer 32 is a member that functions as a diffuser and has a function of fastening the inflator 31 to the side frame portion 15 together with the airbag 40. Most of the retainer 32 is formed in a substantially cylindrical shape by bending a plate material such as a metal plate. The retainer 32 is provided with a window 33, and most of the inflation gas ejected from the inflator 31 is ejected to the outside of the retainer 32 through the window 33.

リテーナ32には、これを上記サイドフレーム部15に取付けるための係止部材として、複数本のボルト34が固定されている。表現を変えると、複数本のボルト34が、リテーナ32を介してインフレータ31に間接的に固定されている。   A plurality of bolts 34 are fixed to the retainer 32 as a locking member for attaching the retainer 32 to the side frame portion 15. In other words, the plurality of bolts 34 are indirectly fixed to the inflator 31 via the retainer 32.

なお、インフレータアセンブリ30は、インフレータ31とリテーナ32とが一体になったものであってもよい。
<エアバッグ40>
図1〜図3の少なくとも1つに示すように、エアバッグ40は、車両10の走行中等に側突等により衝撃が側方からボディサイド部11に加わったときに、インフレータ31から膨張用ガスGの供給を受ける。この膨張用ガスGの供給を受けたエアバッグ40は、自身の一部(後部)を上記収納部18内に残した状態で同収納部18から略前方へ向けて飛び出し、車両用シート12に着座した乗員Pの上半身とボディサイド部11との間で膨張展開することにより上記側突の衝撃から乗員Pの上半身を保護する。
The inflator assembly 30 may be one in which the inflator 31 and the retainer 32 are integrated.
<Airbag 40>
As shown in at least one of FIGS. 1 to 3, the airbag 40 is inflated from the inflator 31 when an impact is applied to the body side part 11 from the side due to a side collision or the like while the vehicle 10 is traveling. Receive supply of G. The airbag 40 that has received the supply of the inflation gas G jumps out substantially forward from the storage portion 18 in a state where a part (rear portion) of the airbag 40 is left in the storage portion 18 to the vehicle seat 12. By inflating and deploying between the upper body of the seated occupant P and the body side part 11, the upper body of the occupant P is protected from the impact of the side collision.

図5は、エアバッグ40が膨張用ガスGを充填させることなく平面状に展開させられた状態(以下「非膨張展開状態」という)のエアバッグモジュールAMを、乗員P及び車両用シート12とともに示している。また、図6は、エアバッグモジュールAMの内部構造を示すべく、図5の非膨張展開状態のエアバッグ40が車幅方向の中央部分で切断されたエアバッグモジュールAMを、車両用シート12及び乗員Pとともに示している。図6中、一点鎖線の大きな丸い枠Xで囲まれた箇所は、小さな丸い枠Xで囲まれた箇所を拡大して示している。   FIG. 5 shows an airbag module AM in a state where the airbag 40 is deployed in a plane without being filled with the inflation gas G (hereinafter referred to as “non-inflated and deployed state”) together with the occupant P and the vehicle seat 12. Show. 6 shows the airbag module AM in which the airbag 40 in the non-inflated and deployed state in FIG. 5 is cut at the center in the vehicle width direction, and the vehicle seat 12 and the airbag module AM. It is shown together with the passenger P. In FIG. 6, a portion surrounded by a large round frame X with a one-dot chain line shows an enlarged portion surrounded by a small round frame X.

図5及び図6の少なくとも一方に示すように、エアバッグ40は、1枚の布片41(基布、パネル布等とも呼ばれる)を、その中央部分に設定した折り線42に沿って二つ折りして車幅方向に重ね合わせ、その重ね合わされた部分を袋状となるように結合させることにより形成されている。ここでは、エアバッグ40の上記の重ね合わされた2つの部分を区別するために、車内側に位置するものを布部43(図6参照)といい、車外側に位置するものを布部44(図5参照)というものとする。   As shown in at least one of FIGS. 5 and 6, the airbag 40 folds one piece of cloth 41 (also called a base cloth, panel cloth, etc.) along a fold line 42 set at the center thereof. Then, they are formed by overlapping in the vehicle width direction and joining the overlapped portions so as to form a bag. Here, in order to distinguish the two overlapped portions of the airbag 40, the one located on the inside of the vehicle is referred to as a cloth portion 43 (see FIG. 6), and the one located on the outside of the vehicle is designated as a cloth portion 44 ( (See FIG. 5).

なお、第1実施形態では、折り線42がエアバッグ40の前端に位置するように布片41が二つ折りされているが、折り線42が他の端部、例えば後端部に位置するように布片41が二つ折りされてもよい。また、エアバッグ40は折り線42に沿って分割された2枚の布片からなるものであってもよい。この場合には、エアバッグ40は、2枚の布片を車幅方向に重ね合わせ、両布片をそれらの周縁部において結合させることにより袋状に形成される。さらに、エアバッグ40は3枚以上の布片からなるものであってもよい。   In the first embodiment, the cloth piece 41 is folded in two so that the folding line 42 is positioned at the front end of the airbag 40, but the folding line 42 is positioned at the other end, for example, the rear end. The cloth piece 41 may be folded in half. The airbag 40 may be composed of two pieces of cloth divided along the fold line 42. In this case, the airbag 40 is formed in a bag shape by superimposing two pieces of cloth in the vehicle width direction and joining both pieces of cloth at their peripheral portions. Further, the airbag 40 may be composed of three or more pieces of cloth.

エアバッグ40においては、両布部43,44の外形形状が、折り線42を対称軸として互いに線対称の関係にある。各布部43,44の形状・大きさは、エアバッグ40が車両用シート12及びボディサイド部11間で膨張展開したときに、その車両用シート12に着座している乗員Pの上半身に対応する領域を占有し得るように設定されている。   In the airbag 40, the outer shapes of the cloth portions 43 and 44 are in a line-symmetric relationship with each other with the folding line 42 as the axis of symmetry. The shape and size of the cloth portions 43 and 44 correspond to the upper body of the occupant P seated on the vehicle seat 12 when the airbag 40 is inflated and deployed between the vehicle seat 12 and the body side portion 11. It is set so that it can occupy the area to be.

上記布部43,44としては、強度が高く、かつ可撓性を有していて容易に折り畳むことのできる素材、例えばポリエステル糸、ポリアミド糸等を用いて形成した織布等が適している。   As the cloth parts 43 and 44, a woven cloth formed using a material having high strength and flexibility and can be easily folded, for example, polyester yarn, polyamide yarn or the like is suitable.

両布部43,44の上記結合は、それらの周縁部に設けられた周縁結合部45においてなされている。第1実施形態では、周縁結合部45は、両布部43,44の周縁部のうち、後下端部及び前端部(折り線42の近傍部分)を除く部分を、縫製(縫糸で縫合)することにより形成されている。   The above-described connection between the cloth parts 43 and 44 is performed at a peripheral connection part 45 provided at the peripheral part thereof. In the first embodiment, the peripheral edge coupling portion 45 sews (sews) a portion of the peripheral edge portions of the cloth portions 43 and 44 excluding the rear lower end portion and the front end portion (the vicinity of the folding line 42) with a sewing thread. It is formed by.

この縫製に関し、図5〜図7、図9、図10、さらには、図14、図16、図18、図19、図22、図27、図29〜図31及び図36では、2つの線種で縫製部分を表現している。一方の線種は、一定長さの太線を断続的に並べて表現した線(破線の一種)であり、これは、縫合の対象となる布部の外側(布部間ではない)における縫糸の状態を示している(図5等参照)。他方の線種は、点を一定間隔おきに並べて表現した線(破線の一種)であり、これは、縫合の対象となる布部の内側(布部間)における縫糸の状態を示している(図6等参照)。すなわち、縫製が後者の態様で表現されている図は、縫製部分を通る断面に沿った断面構造を示している。   5 to 7, 9, 10, and FIGS. 14, 16, 18, 19, 22, 27, 29 to 31, and 36, the two lines are related to this sewing. The sewing part is expressed with seeds. One line type is a line (a type of broken line) expressed by arranging thick lines of a certain length intermittently, which is the state of the sewing thread outside the cloth part to be stitched (not between the cloth parts). (See FIG. 5 and the like). The other line type is a line (a type of broken line) in which dots are arranged at regular intervals, and this indicates the state of the sewing thread inside the cloth part to be stitched (between the cloth parts) ( (See FIG. 6). That is, the drawing in which the sewing is expressed in the latter manner shows a cross-sectional structure along a cross section passing through the sewing portion.

図5及び図6の少なくとも一方に示すように、両布部43,44間であって、周縁結合部45によって囲まれた空間(周縁結合部45よりも内側の空間)は、膨張用ガスG(図1等参照)によって乗員Pの上半身の外側方近傍で膨張することにより、衝撃から同上半身を保護するための膨張部46となっている。   As shown in at least one of FIGS. 5 and 6, the space between the cloth portions 43 and 44 and surrounded by the peripheral joint portion 45 (the space inside the peripheral joint portion 45) is an expansion gas G. By inflating near the outer side of the upper body of the occupant P (see FIG. 1 etc.), an inflating portion 46 is provided to protect the upper body from impact.

なお、周縁結合部45は、上記縫糸を用いた縫合とは異なる手段、例えば接着剤を用いた接着によって形成されてもよい。この点は、後述する外結合部54,55及び内結合部63についても同様である。   In addition, the periphery coupling | bond part 45 may be formed by the means different from the sewing using the said sewing thread, for example, adhesion | attachment using an adhesive agent. This also applies to the outer coupling portions 54 and 55 and the inner coupling portion 63 described later.

上記インフレータアセンブリ30は、前側ほど低くなるように傾斜させられた姿勢で、エアバッグ40内の後端下部に配設されている。そして、リテーナ32のボルト34が、車内側の布部43に挿通されている(図4参照)。こうした挿通により、インフレータアセンブリ30がエアバッグ40に対し位置決めされた状態で係止されている。また、エアバッグ40の後部下端は、インフレータアセンブリ30の下端部に対し、環状の締結具37によって気密状態で締付けられている。   The inflator assembly 30 is disposed in the lower portion of the rear end in the airbag 40 in a posture inclined so as to become lower toward the front side. The bolts 34 of the retainer 32 are inserted through the cloth portion 43 on the vehicle inner side (see FIG. 4). By such insertion, the inflator assembly 30 is locked in a state of being positioned with respect to the airbag 40. Further, the lower end of the rear portion of the airbag 40 is fastened to the lower end of the inflator assembly 30 in an airtight state by an annular fastener 37.

エアバッグ40の膨張部46は、区画部材50により、インフレータ31からの膨張用ガスGが最初に供給される上流側膨張部47と、上流側膨張部47を経由した膨張用ガスGが供給される下流側膨張部48とに区画されている。区画部材50は、一般的にテザーと呼ばれるものと同様の構成を有しており、エアバッグ40の布部と同様の素材を用いて形成されている。   The inflating portion 46 of the airbag 40 is supplied by the partition member 50 with the upstream inflating portion 47 to which the inflating gas G from the inflator 31 is first supplied and the inflating gas G via the upstream inflating portion 47. And a downstream-side inflatable portion 48. The partition member 50 has the same configuration as that generally called a tether, and is formed using the same material as the cloth portion of the airbag 40.

図7は、エアバッグ40が非膨張展開状態にされたエアバッグモジュールAMの上部の一部を斜め上後方から見た状態を示し、図8は、図5のA−A線に沿った断面構造を示している。この図8では、各部材が厚みを省略して描かれるとともに、内結合部63がジグザグ状に描かれている。この点は、後述する図15についても同様である。図9は、エアバッグ40が膨張して区画部材50が平面状に緊張したエアバッグモジュールAMの内部構造を示している。また、図10(A)は、屈曲状態の区画部材50の一部を示し、同図10(B)は、平面状に緊張した区画部材50における調圧弁の近傍部分を示している。これらの図7〜図10(A),(B)の少なくとも1つに示すように、区画部材50は、略上下方向に延びる折り線51に沿って折り返されることにより、相対向する対向端部52,53を接近させてなる二つ折り状態にされている。この二つ折り状態の区画部材50は、折り線51を両対向端部52,53よりも上流側に位置させた状態で非膨張展開状態の膨張部46に配設されている(図8参照)。   FIG. 7 shows a state in which a part of the upper portion of the airbag module AM in which the airbag 40 is in a non-inflated and deployed state is viewed obliquely from above and rearward, and FIG. 8 is a cross section taken along the line AA in FIG. The structure is shown. In FIG. 8, each member is drawn with the thickness omitted, and the inner coupling portion 63 is drawn in a zigzag shape. This also applies to FIG. 15 described later. FIG. 9 shows the internal structure of the airbag module AM in which the airbag 40 is inflated and the partition member 50 is tensioned flat. FIG. 10A shows a part of the partition member 50 in a bent state, and FIG. 10B shows a portion near the pressure regulating valve in the partition member 50 that is tensioned in a planar shape. As shown in at least one of these FIGS. 7 to 10A and 10B, the partition member 50 is folded back along a fold line 51 extending in a substantially vertical direction, thereby facing opposite ends. 52 and 53 are made close to each other. The two-folded partition member 50 is disposed in the inflatable portion 46 in a non-inflated and deployed state with the fold line 51 positioned on the upstream side of the opposing end portions 52 and 53 (see FIG. 8). .

上記区画部材50は、平面状態となったとき、折り線51に沿う方向(略上下方向)の長さL1が、折り線51に直交する方向の長さL2よりも長くなるように形成されている(図6、図9)。   When the partition member 50 is in a planar state, the length L1 in the direction along the fold line 51 (substantially in the vertical direction) is longer than the length L2 in the direction perpendicular to the fold line 51. (FIGS. 6 and 9).

二つ折り状態の区画部材50は、両対向端部52,53の各々において、略上下方向へ延びる外結合部54,55によって、エアバッグ40の両布部43,44にそれぞれ結合されている。両外結合部54,55は、膨張部46が膨張したときに、乗員Pの上半身における前後方向についての中間部の側方となる箇所で、区画部材50の各対向端部52,53を対応する布部43,44に結合している(図3参照)。   The two-folded partition member 50 is coupled to both cloth portions 43 and 44 of the airbag 40 by outer coupling portions 54 and 55 extending substantially in the vertical direction at each of the opposing end portions 52 and 53. Both the outer coupling portions 54 and 55 correspond to the opposing end portions 52 and 53 of the partition member 50 at locations that are lateral to the intermediate portion in the front-rear direction of the upper body of the occupant P when the inflating portion 46 is inflated. It couple | bonds with the cloth parts 43 and 44 to perform (refer FIG. 3).

このようにして、区画部材50は、エアバッグ40における車内側の布部43と車外側の布部44との間に架け渡されている。区画部材50は、膨張部46の非膨張時には二つ折りされた状態となる(図7、図8参照)。また、区画部材50は、膨張部46が膨張したとき、車幅方向に平面状に緊張させられた状態となり(図9、図10(B)参照)、同膨張部46の車幅方向の厚みを規制する。   In this way, the partition member 50 is bridged between the fabric portion 43 on the vehicle interior side and the fabric portion 44 on the vehicle exterior side of the airbag 40. The partition member 50 is folded in two when the inflating portion 46 is not inflated (see FIGS. 7 and 8). Moreover, when the expansion part 46 expand | swells, the partition member 50 will be in the state by which it was tensed planarly in the vehicle width direction (refer FIG. 9, FIG. 10 (B)), and the thickness of the vehicle expansion direction of the expansion part 46 is the same. To regulate.

また、二つ折り状態の区画部材50は、折り線51に沿う方向(略上下方向)の両端部において、エアバッグ40に結合されている。すなわち、二つ折り状態の区画部材50の上端部及び下端部は、上述した周縁結合部45(図6、図7、図9参照)によってエアバッグ40の両布部43,44の上端部及び下端部に結合(共縫い)されている。   Further, the two-folded partition member 50 is coupled to the airbag 40 at both ends in the direction along the fold line 51 (substantially up and down direction). That is, the upper end portion and the lower end portion of the partition member 50 in the folded state are the upper end portions and the lower end portions of the cloth portions 43 and 44 of the airbag 40 by the peripheral edge coupling portion 45 (see FIGS. 6, 7, and 9). It is joined (co-sewn) to the part.

図5及び図6の少なくとも一方に示すように、上記区画部材50により、膨張部46は、その後半部分を構成し、かつインフレータアセンブリ30の配置された後側の上流側膨張部47と、同膨張部46の前半部分を構成し、かつインフレータアセンブリ30の配置されていない前側の下流側膨張部48とに区画されている。   As shown in at least one of FIG. 5 and FIG. 6, the partition member 50 causes the inflating portion 46 to form the latter half of the inflating portion 46, and the upstream inflating portion 47 on the rear side where the inflator assembly 30 is disposed. The front portion of the inflating section 46 is divided into a front-side downstream inflating section 48 where the inflator assembly 30 is not disposed.

第1実施形態では、区画部材50は、図10(A),(B)に示すように、折り線51に沿う方向である略上下方向に並べられた2つの部材56,57からなる。上下両部材56,57では、それらの端部58,59の端縁58E,59E同士が合致させられた状態で、端部58,59同士が帯状に重ね合わされている。上下両部材56,57は、帯状の重ね合わせ部61と、それ以外の箇所(以下「非重ね合わせ部62」という)との境界部分において、折り線51に略直交する方向へ延びる内結合部63によって結合されている。この境界部分は、上記端縁58E,59Eから一定距離離れている。   In the first embodiment, the partition member 50 includes two members 56 and 57 that are arranged in a substantially vertical direction that is a direction along the fold line 51, as shown in FIGS. In the upper and lower members 56, 57, the end portions 58, 59 are overlapped in a band shape with the end edges 58E, 59E of the end portions 58, 59 being matched. The upper and lower members 56 and 57 are inner coupling portions extending in a direction substantially perpendicular to the folding line 51 at the boundary portion between the band-shaped overlapping portion 61 and other portions (hereinafter referred to as “non-overlapping portion 62”). 63. This boundary portion is separated from the end edges 58E and 59E by a certain distance.

上記区画部材50の略中央部分には、膨張部46への膨張用ガスGの供給期間の初期には閉弁して上流側膨張部47から下流側膨張部48への膨張用ガスGの流通を規制し、同供給期間の途中からは、乗員拘束に伴い加わる外力により開弁して前記規制を解除する調圧弁70が設けられている。   In the substantially central portion of the partition member 50, the expansion gas G is closed from the upstream side expansion part 47 to the downstream side expansion part 48 at the initial stage of the supply period of the expansion gas G to the expansion part 46. From the middle of the supply period, there is provided a pressure regulating valve 70 that is opened by an external force applied in accordance with passenger restraint to release the restriction.

次に、この調圧弁70の構成について説明すると、上記内結合部63は、その一部(第1実施形態では折り線51を跨ぐ部分)において結合を解除されている。表現を変えると、重ね合わせ部61と非重ね合わせ部62との境界部分において、折り線51を跨ぐ部分では、上下両部材56,57を結合させる内結合部63が設けられていない。このように内結合部63が設けられていない部分である、結合を解除された箇所は、上流側膨張部47と下流側膨張部48を連通させるスリット状の内開口部71を構成している。   Next, the configuration of the pressure regulating valve 70 will be described. The inner coupling portion 63 is released from coupling at a part thereof (a portion straddling the folding line 51 in the first embodiment). In other words, in the boundary portion between the overlapping portion 61 and the non-overlapping portion 62, the inner connecting portion 63 that connects the upper and lower members 56 and 57 is not provided in the portion straddling the folding line 51. In this way, the portion where the inner coupling portion 63 is not provided, where the coupling is released, constitutes a slit-like inner opening portion 71 that allows the upstream expansion portion 47 and the downstream expansion portion 48 to communicate with each other. .

重ね合わせ部61であって、内開口部71に対応する部分(近傍部分、より正確には、内開口部71と端縁58E,59Eとの間の部分)は、一対の弁体部73,74を構成している。このように、両弁体部73,74を有する重ね合わせ部61は、膨張部46の膨張前には上流側膨張部47に配置されている。   A portion corresponding to the inner opening 71 (a vicinity portion, more precisely, a portion between the inner opening 71 and the end edges 58E and 59E) corresponding to the overlapping portion 61 includes a pair of valve bodies 73, 74 is constituted. As described above, the overlapping portion 61 having both valve body portions 73 and 74 is disposed in the upstream inflating portion 47 before the inflating portion 46 is inflated.

そして、重ね合わせ部61は非重ね合わせ部62との境界部分において、上方又は下方(第1実施形態では上方)へ折り曲げられて、同非重ね合わせ部62に重ねられている。さらに、折り曲げられた帯状の重ね合わせ部61は、内結合部63に沿う方向の両端部において、前述した外結合部54,55により、エアバッグ40の対応する布部43,44及び区画部材50(非重ね合わせ部62)に結合(共縫い)されている(図6、図8参照)。   The overlapping portion 61 is bent upward or downward (upward in the first embodiment) at the boundary portion with the non-overlapping portion 62 and overlapped with the non-overlapping portion 62. Further, the folded band-shaped overlapping portion 61 is arranged at both end portions in the direction along the inner coupling portion 63 by the outer coupling portions 54 and 55 described above, and the cloth portions 43 and 44 and the partition member 50 corresponding to the airbag 40. It is joined (co-sewn) to (non-overlapping portion 62) (see FIGS. 6 and 8).

ところで、図4に示すように、エアバッグ40及びインフレータアセンブリ30を主要な構成部材として有する上記エアバッグモジュールAMは、非膨張展開状態のエアバッグ40(図5参照)が折り畳まれることにより、コンパクトな形態(以下「収納用形態」という)にされている。これは、エアバッグモジュールAMを、シートバック14における限られた大きさの収納部18に対し、収納に適したものとするためである。   By the way, as shown in FIG. 4, the airbag module AM having the airbag 40 and the inflator assembly 30 as main components is compact by folding the airbag 40 (see FIG. 5) in a non-inflated and deployed state. (Hereinafter referred to as “storage form”). This is because the airbag module AM is suitable for storage with respect to the storage unit 18 having a limited size in the seat back 14.

上記収納用形態にされたエアバッグモジュールAMは、インフレータアセンブリ30を後側に位置させ、かつエアバッグ40の多くを前側に位置させた状態で、シートバック14の収納部18に配設されている。そして、上述したように、リテーナ32から延びてエアバッグ40(布部43)に挿通されたボルト34がサイドフレーム部15に挿通され、ナット36によって締付けられている。この締付けにより、インフレータアセンブリ30がエアバッグ40と一緒にサイドフレーム部15に固定されている。   The airbag module AM in the storage configuration is disposed in the storage portion 18 of the seatback 14 with the inflator assembly 30 positioned on the rear side and most of the airbag 40 positioned on the front side. Yes. As described above, the bolt 34 extending from the retainer 32 and inserted into the airbag 40 (cloth portion 43) is inserted into the side frame portion 15 and is tightened by the nut 36. By this tightening, the inflator assembly 30 is fixed to the side frame portion 15 together with the airbag 40.

なお、インフレータアセンブリ30は、上述したボルト34及びナット36とは異なる手段によって車両10(サイドフレーム部15)に固定されてもよい。
図1に示すように、サイドエアバッグ装置は、上述したエアバッグモジュールAMのほかに衝撃センサ75及び制御装置76を備えている。衝撃センサ75は加速度センサ等からなり、車両10のボディサイド部11(図2及び図3参照)等に設けられており、同ボディサイド部11に側方から加えられる衝撃を検出する。制御装置76は、衝撃センサ75からの検出信号に基づきインフレータ31の作動を制御する。
The inflator assembly 30 may be fixed to the vehicle 10 (side frame portion 15) by means different from the bolts 34 and nuts 36 described above.
As shown in FIG. 1, the side airbag device includes an impact sensor 75 and a control device 76 in addition to the airbag module AM described above. The impact sensor 75 is composed of an acceleration sensor or the like and is provided on the body side portion 11 (see FIGS. 2 and 3) of the vehicle 10 and detects an impact applied to the body side portion 11 from the side. The control device 76 controls the operation of the inflator 31 based on the detection signal from the impact sensor 75.

上記のようにして、第1実施形態のサイドエアバッグ装置が構成されている。次に、このサイドエアバッグ装置の代表的な動作の態様(モード)について、図11(A)〜(C)を参照して説明する。これらの図11(A)〜(C)は、調圧弁70等の形態が、膨張用ガスGの供給開始後時間とともに変化する様子を模式的に示したものであり、細部については省略・簡略化されている。また、図12は、上流側及び下流側の各膨張部47,48内の膨張用ガスGの圧力(内圧)と、乗員Pの各膨張部47,48側の受圧面積と、乗員Pがエアバッグ40から受ける荷重とが、衝撃により車内側へ進入するボディサイド部11の進入量(ストローク)に応じてどのように変化するかを示している。荷重は、内圧と受圧面積との積によって表される。   The side airbag device of the first embodiment is configured as described above. Next, typical operation modes (modes) of the side airbag device will be described with reference to FIGS. 11A to 11C schematically show how the configuration of the pressure regulating valve 70 and the like changes with time after the supply of the expansion gas G starts, and details are omitted and simplified. It has become. 12 shows the pressure (internal pressure) of the inflation gas G in the upstream and downstream expansion portions 47, 48, the pressure receiving area of the passenger P on the expansion portions 47, 48 side, It shows how the load received from the bag 40 changes according to the amount of entry (stroke) of the body side portion 11 that enters the vehicle interior due to impact. The load is represented by the product of the internal pressure and the pressure receiving area.

このサイドエアバッグ装置では、側突等により車両10に対し側方から衝撃が加わらないときには、制御装置76からインフレータ31に対し、これを作動させるための作動信号が出力されず、インフレータ31から膨張用ガスGが膨張部46(上流側膨張部47)に供給されない。エアバッグ40は、収納用形態でインフレータアセンブリ30とともに収納部18に収納され続ける(図4参照)。このとき、エアバッグ40では、両布部43,44が互いに接近している。区画部材50は、折り線51を対向端部52,53よりも上流側に位置させてなる二つ折り状態となっている。両弁体部73,74は上流側膨張部47内で重なり合っている。ボディサイド部11の進入量(ストローク)は「0」である。各膨張部47,48の内圧はともに低く(略大気圧)、受圧面積及び荷重はともに「0」である。   In this side airbag device, when no impact is applied to the vehicle 10 from the side due to a side collision or the like, the control device 76 does not output an operation signal for operating the inflator 31, and the inflator 31 is inflated. The working gas G is not supplied to the expansion section 46 (upstream expansion section 47). The airbag 40 continues to be stored in the storage portion 18 together with the inflator assembly 30 in the storage form (see FIG. 4). At this time, in the airbag 40, both the cloth parts 43 and 44 are approaching each other. The partition member 50 is in a double-folded state in which the fold line 51 is positioned upstream of the opposed end portions 52 and 53. Both valve body parts 73 and 74 overlap in the upstream expansion part 47. The approach amount (stroke) of the body side portion 11 is “0”. The internal pressures of the expanding portions 47 and 48 are both low (substantially atmospheric pressure), and the pressure receiving area and the load are both “0”.

これに対し、車両10の走行中に、側突等によりボディサイド部11に所定値以上の衝撃が加わり、そのことが衝撃センサ75によって検出されると、その検出信号に基づき制御装置76からインフレータ31に対し、これを作動させるための作動信号が出力される。このときのボディサイド部11の進入量(ストローク)をS0とする。この作動信号に応じて、インフレータ31では、ガス発生剤が高温高圧の膨張用ガスGを発生する。この膨張用ガスGは、まず上流側膨張部47に供給されて、同上流側膨張部47が膨張を開始する。   On the other hand, when the vehicle 10 is traveling, an impact of a predetermined value or more is applied to the body side portion 11 due to a side collision or the like, and when this is detected by the impact sensor 75, the inflator is controlled from the control device 76 based on the detection signal. The operation signal for operating this is output to 31. The amount of entry (stroke) of the body side portion 11 at this time is S0. In response to this operation signal, in the inflator 31, the gas generating agent generates a high-temperature and high-pressure expansion gas G. The expansion gas G is first supplied to the upstream expansion portion 47, and the upstream expansion portion 47 starts to expand.

膨張部46内では、二つ折り状態の区画部材50が、折り線51を対向端部52,53よりも上流側に位置させた状態で配設されている。しかも、その区画部材50は、両対向端部52,53の各々において、外結合部54,55によってエアバッグ40の対応する布部43,44に結合されている(図7、図8参照)。また、区画部材50は、折り線51に沿う方向の両端部(上端部及び下端部)の各々において、周縁結合部45によって両布部43,44に結合されている(図6、図7参照)。そのため、上記のように上流側膨張部47の膨張が開始すると、二つ折り状態の区画部材50が引っ張られる。区画部材50に対し、折り線51に沿う方向や直交する方向にテンションが掛かって、区画部材50が平面状態になろうとする。   In the inflating portion 46, the two-folded partition member 50 is disposed in a state where the folding line 51 is positioned upstream of the opposed end portions 52 and 53. In addition, the partition member 50 is coupled to the corresponding cloth portions 43 and 44 of the airbag 40 by the outer coupling portions 54 and 55 at each of the opposed end portions 52 and 53 (see FIGS. 7 and 8). . Further, the partition member 50 is coupled to both the cloth portions 43 and 44 by the peripheral coupling portion 45 at each of both end portions (upper end portion and lower end portion) in the direction along the fold line 51 (see FIGS. 6 and 7). ). Therefore, when the expansion of the upstream expansion portion 47 is started as described above, the partition member 50 in a folded state is pulled. Tension is applied to the partition member 50 in a direction along the fold line 51 or in a direction orthogonal thereto, and the partition member 50 tends to be in a planar state.

ただし、区画部材50では、その全体が均一に緊張状態となるわけではない。上述した区画部材50の布部43,44に対する結合態様から、上流側膨張部47の膨張時の縦断面が、図9に示すような、上下両端部近傍部分で曲率が大きく、それ以外の部分で曲率の小さな縦長の略楕円形状となるからである。こうした異形(非円形)の断面であることから、区画部材50の上部P2及び下部P3には、それらの間の部分(中間部分P1)に比べテンションが掛かりにくい。そのため、区画部材50の上部P2及び下部P3は、中間部分P1が略平面状の緊張状態となったときにも、折り線51を対向端部52,53よりも上流側に位置させ、かつ二つ折り状態よりは開いた屈曲状態となる(図11(A)参照)。   However, the whole partition member 50 is not in a uniform tension state. From the above-described coupling mode of the partition member 50 to the cloth portions 43 and 44, the longitudinal section of the upstream inflatable portion 47 when inflated has a large curvature near the upper and lower end portions as shown in FIG. This is because it becomes a vertically long substantially elliptical shape with a small curvature. Because of such an irregular (non-circular) cross section, the upper portion P2 and the lower portion P3 of the partition member 50 are less likely to be tensioned than the portion (intermediate portion P1) between them. For this reason, the upper part P2 and the lower part P3 of the partition member 50 have the folding line 51 positioned upstream of the opposed end parts 52 and 53, even when the intermediate part P1 is in a substantially flat tension state. The bent state is more open than the folded state (see FIG. 11A).

ここで、区画部材50は、折り線51に沿う方向(略上下方向)には、同折り線51に直交する方向よりも長く形成されている(L1>L2)。このことから、区画部材50の上記中間部分P1では、短い方向(折り線51に直交する方向)に対し、長い方向(折り線51に沿う方向)に対するよりも強いテンションが掛かりやすい。第1実施形態では、内開口部71が、この強いテンションの掛かりやすい方向に沿って延びているため、内開口部71が閉じられやすい。   Here, the partition member 50 is formed in a direction along the fold line 51 (substantially up and down direction) longer than a direction orthogonal to the fold line 51 (L1> L2). From this, in the said intermediate part P1 of the division member 50, it is easy to apply stronger tension with respect to a short direction (direction orthogonal to the fold line 51) than with respect to a long direction (direction along the fold line 51). In the first embodiment, since the inner opening 71 extends along the direction in which this strong tension is easily applied, the inner opening 71 is easily closed.

また、重ね合わせ部61の全体が非重ね合わせ部62側へ折り曲げられ、さらに、内結合部63に沿う方向の両端部において外結合部54,55により、対向端部52,53とともに布部43,44に結合されている(図10(B)参照)。このため、上流側膨張部47が膨張したときに区画部材50の中間部分P1では、折り線51に直交する方向に強いテンションが掛かるだけでなく、重ね合わせ部61に対しても同方向に強いテンションが掛かる。   Further, the entire overlapping portion 61 is bent toward the non-overlapping portion 62, and further, the cloth portion 43 together with the opposite end portions 52 and 53 by the outer connecting portions 54 and 55 at both ends in the direction along the inner connecting portion 63. , 44 (see FIG. 10B). For this reason, when the upstream expansion portion 47 expands, the intermediate portion P1 of the partition member 50 is not only strongly tensioned in the direction orthogonal to the fold line 51 but also strong in the same direction against the overlapping portion 61. Tension is applied.

また、上流側膨張部47に位置する、両弁体部73,74に対しては、その重なり方向(厚み方向)についての両側から内圧PIが加わる。両弁体部73,74が互いに密着して両弁体部73,74間での膨張用ガスGの流通が遮断された自己シール状態となる。さらに、折り曲げられて区画部材50の非重ね合わせ部62に重ねられた重ね合わせ部61が、内圧PIによりその非重ね合わせ部62に押し付けられる(図11(A)参照)。これらのことからも、両弁体部73,74が一層閉じられやすくなる。   Further, the internal pressure PI is applied to both valve body portions 73 and 74 located in the upstream expansion portion 47 from both sides in the overlapping direction (thickness direction). Both valve body parts 73 and 74 are brought into close contact with each other and a self-sealing state is achieved in which the flow of the expansion gas G between the valve body parts 73 and 74 is blocked. Further, the overlapping portion 61 that is bent and overlapped with the non-overlapping portion 62 of the partition member 50 is pressed against the non-overlapping portion 62 by the internal pressure PI (see FIG. 11A). Also from these things, it becomes easier to close both valve body parts 73 and 74 further.

両弁体部73,74が、それらの少なくとも一部において互いに接触すると、同両弁体部73,74が閉じられた状態となり、上流側膨張部47内の膨張用ガスGは、両弁体部73,74間及び内開口部71を通って下流側膨張部48へ流出することを規制される。   If both valve body parts 73 and 74 contact each other in at least some of them, both valve body parts 73 and 74 will be in the closed state, and the expansion gas G in the upstream side expansion part 47 will be the both valve bodies. Outflow between the portions 73 and 74 and through the inner opening 71 to the downstream expansion portion 48 is restricted.

上記の規制により、上流側膨張部47に膨張用ガスGが溜まり、進入量(ストローク)S0以降、上流側膨張部47の内圧のみが上昇し始める。
第1実施形態では、膨張部46が区画部材50によって上流側膨張部47及び下流側膨張部48に区画されていることから、上流側膨張部47の容積は、膨張部46が区画されていない場合(従来技術1がこれに該当する)のその膨張部の容積よりも小さい。そのため、上流側膨張部47の内圧は、膨張部46が区画されていない場合よりも早く上昇を開始し、しかも高くなる。特に、上流側膨張部47内の膨張用ガスGは、両弁体部73,74間においてのみ流通を許容され、両弁体部73,74間を経由せずに下流側膨張部48へ流出することはない。従って、膨張用ガスGの上記流出が原因で上流側膨張部47の内圧の上昇速度が低下することがない。
Due to the above restriction, the expansion gas G accumulates in the upstream expansion portion 47, and only the internal pressure of the upstream expansion portion 47 starts to increase after the approach amount (stroke) S0.
In the first embodiment, since the expansion part 46 is partitioned into the upstream expansion part 47 and the downstream expansion part 48 by the partition member 50, the volume of the upstream expansion part 47 is not partitioned from the expansion part 46. In the case (conventional technique 1 corresponds to this), it is smaller than the volume of the expansion part. For this reason, the internal pressure of the upstream inflating portion 47 starts to rise faster than when the inflating portion 46 is not partitioned, and becomes higher. In particular, the expansion gas G in the upstream expansion portion 47 is allowed to flow only between the valve body portions 73 and 74, and flows out to the downstream expansion portion 48 without passing between the valve body portions 73 and 74. Never do. Therefore, the increase rate of the internal pressure of the upstream side expansion portion 47 does not decrease due to the outflow of the expansion gas G.

なお、このときには、エアバッグ40(膨張部46)が未だ乗員Pに接しておらず、従って、受圧面積及び荷重はともに依然として「0」である。
そして、上流側膨張部47の上記膨張により、同上流側膨張部47が折り畳まれた順とは逆の順に折り状態を解消しようとする。上流側膨張部47が、折り状態を解消(展開)しながら膨張していくと、シートバック14のシートパッド16がエアバッグ40によって押圧され、破断予定部21(図4参照)において破断される。エアバッグ40は、図13に示すように、一部(インフレータアセンブリ30の近傍部分)をシートバック14内に残した状態で、破断された箇所を通じて同シートバック14から飛び出す。
At this time, the airbag 40 (inflatable portion 46) is not yet in contact with the occupant P. Therefore, both the pressure receiving area and the load are still “0”.
And by the said expansion | swelling of the upstream expansion part 47, it tries to eliminate a folding state in the reverse order to the order in which the upstream expansion part 47 was folded. When the upstream inflating portion 47 is inflated while eliminating (deploying) the folded state, the seat pad 16 of the seat back 14 is pressed by the airbag 40 and broken at the planned breaking portion 21 (see FIG. 4). . As shown in FIG. 13, the airbag 40 jumps out from the seat back 14 through the broken portion in a state where a part (the vicinity of the inflator assembly 30) remains in the seat back 14.

その後も膨張用ガスGの供給される上流側膨張部47は、図2及び図3に示すように、ボディサイド部11と車両用シート12に着座した乗員Pの胸部PTの後半部との間で前方へ向けて折り状態を解消しながら展開する。   Thereafter, as shown in FIGS. 2 and 3, the upstream inflating portion 47 to which the inflating gas G is supplied is between the body side portion 11 and the rear half of the chest PT of the occupant P seated on the vehicle seat 12. Develop it while eliminating the folded state.

ボディサイド部11の進入量(ストローク)がS1となり、このボディサイド部11によって膨張部46が乗員Pの上半身に押し付けられ始める。膨張部46では上流側膨張部47のみが膨張していることから、乗員Pが膨張部46の圧力を受けながら接触する箇所は上流側膨張部47のみである。そのため、乗員Pが膨張部46の圧力を受ける面の面積(膨張部46側の受圧面積)は、上流側膨張部47の圧力を受ける面の面積(上流側膨張部47側の受圧面積)と同じであって小さい。ただし、この上流側膨張部47側の受圧面積は、側突の衝撃に応じたボディサイド部11の車内側への進入が進む(進入量(ストローク)が増加する)につれて増大する。   The approach amount (stroke) of the body side part 11 becomes S1, and the inflating part 46 starts to be pressed against the upper body of the occupant P by the body side part 11. Since only the upstream inflatable portion 47 is inflated in the inflatable portion 46, the only place where the occupant P contacts while receiving the pressure of the inflatable portion 46 is the upstream inflatable portion 47. Therefore, the area of the surface where the occupant P receives the pressure of the inflating portion 46 (pressure receiving area on the inflating portion 46 side) is the area of the surface receiving the pressure of the upstream inflating portion 47 (pressure receiving area on the upstream inflating portion 47 side). Same and small. However, the pressure receiving area on the upstream expansion portion 47 side increases as the approach to the vehicle inner side of the body side portion 11 in accordance with the impact of the side collision proceeds (the amount of entry (stroke) increases).

乗員Pが膨張部46を通じて受ける衝撃の荷重もまた、受圧面積及び内圧の増加に伴い増加する。上述したように、上流側膨張部47の内圧が早く上昇を開始することから、荷重が増加を開始する進入量(ストローク)S1は、膨張部46が区画されていない場合(従来技術1)において、荷重が増加を開始する進入量(ストローク)S10よりも小さくなる。表現を変えると、膨張部46が区画されていない場合(従来技術1)よりも早いタイミングで荷重が増加し始め、その分早く、乗員Pの上半身を衝撃から保護するための所定値βに到達する(図12参照)。   The impact load that the occupant P receives through the inflating portion 46 also increases as the pressure receiving area and the internal pressure increase. As described above, since the internal pressure of the upstream expansion portion 47 starts to rise quickly, the approach amount (stroke) S1 at which the load starts to increase is the same when the expansion portion 46 is not partitioned (prior art 1). The load becomes smaller than the approach amount (stroke) S10 at which the increase starts. In other words, the load begins to increase at an earlier timing than when the inflatable portion 46 is not partitioned (prior art 1), and reaches a predetermined value β for protecting the upper body of the occupant P from an impact earlier. (See FIG. 12).

両弁体部73,74の全体が密着した(閉じられた)状態で、上流側膨張部47内に膨張用ガスGが供給され続ける一方、ボディサイド部11の進入量(ストローク)がS2となることで、同ボディサイド部11から加わる外力により、同上流側膨張部47の内圧が値αまで上昇すると、調圧弁70が開弁し始める。   While the entire valve body portions 73 and 74 are in close contact with each other (closed), the expansion gas G continues to be supplied into the upstream-side expansion portion 47, while the amount of entry (stroke) of the body side portion 11 is S2. Thus, when the internal pressure of the upstream side expansion portion 47 rises to the value α due to the external force applied from the body side portion 11, the pressure regulating valve 70 starts to open.

すなわち、膨張部46への膨張用ガスGの供給期間の途中からは、乗員拘束に伴う外力が加わって膨張部46が押圧されて変形し、区画部材50に掛かるテンションが変化する。また、膨張部46の上記変形に伴い上流側膨張部47の内圧がさらに上昇して、区画部材50の中間部分P1が下流側膨張部48側へ押圧されて(図11(B)参照)、同中間部分P1に掛かるテンションが変化する。また、上昇した上記内圧により、区画部材50の上部P2及び下部P3が押圧されて下流側膨張部48側へ膨らむように変形する。上述したように、上部P2及び下部P3は、乗員拘束前には、折り線51を対向端部52,53よりも上流側に位置させた屈曲状態となっている(図11(A)参照)。乗員拘束時には、上部P2及び下部P3は、乗員拘束前の形状(図11(B)の二点鎖線参照)から反転したような形状に変形する。上部P2及び下部P3のこうした形状変化(反転)により、中間部分P1においてテンションの変化が容易に発生する。そして、このテンションの変化により、中間部分P1に位置する内開口部71の変形が許容され、同中間部分P1に位置する弁体部73,74の作動が許容されるようになる。   That is, from the middle of the supply period of the expansion gas G to the expansion portion 46, an external force accompanying occupant restraint is applied, the expansion portion 46 is pressed and deformed, and the tension applied to the partition member 50 changes. Further, the internal pressure of the upstream expansion portion 47 is further increased with the deformation of the expansion portion 46, and the intermediate portion P1 of the partition member 50 is pressed toward the downstream expansion portion 48 (see FIG. 11B). The tension applied to the intermediate portion P1 changes. Further, due to the increased internal pressure, the upper part P2 and the lower part P3 of the partition member 50 are pressed and deformed so as to swell toward the downstream inflating part 48 side. As described above, the upper portion P2 and the lower portion P3 are in a bent state in which the fold line 51 is positioned upstream of the opposed end portions 52 and 53 before occupant restraint (see FIG. 11A). . At the time of occupant restraint, the upper part P2 and the lower part P3 are deformed into a shape that is inverted from the shape before the occupant restraint (see the two-dot chain line in FIG. 11B). Due to such a shape change (inversion) of the upper part P2 and the lower part P3, a change in tension easily occurs in the intermediate part P1. Due to this change in tension, deformation of the inner opening 71 located in the intermediate portion P1 is allowed, and operation of the valve body portions 73 and 74 located in the intermediate portion P1 is allowed.

この際、上部P2及び下部P3の上記反転により、区画部材50においてテンションの掛かっている領域が、上下方向へ拡がっていく。区画部材50の上側の部材56に対しては上方へ向かうテンションが強まり、下側の部材57に対しては下方へ向かうテンションが強まる。これらのテンションの変化により、スリット状の内開口部71が上下方向へ引っ張られて開きやすくなる。   At this time, due to the inversion of the upper part P2 and the lower part P3, the tensioned region of the partition member 50 expands in the vertical direction. The upward tension is increased for the upper member 56 of the partition member 50, and the downward tension is increased for the lower member 57. Due to these changes in tension, the slit-shaped inner opening 71 is easily pulled up and down.

重ね合わせ部61は非重ね合わせ部62に重ねられ、内結合部63に沿う方向についての両端部において、外結合部54,55によってエアバッグ40の布部43,44に結合されている。そのため、重ね合わせ部61において外結合部54,55に近い部分では、重ね合わされた状態を維持しようとする力が強い。しかし、この力は、外結合部54,55から遠ざかるに従い小さくなり、内結合部63に沿う方向についての中央部分、すなわち両弁体部73,74において最小となる。このため、上下方向へ引っ張られた重ね合わせ部61は、弁体部73,74及びその近傍部分においてのみ上下方向へ変形する。   The overlapping portion 61 is overlapped with the non-overlapping portion 62 and is connected to the cloth portions 43 and 44 of the airbag 40 by the outer connecting portions 54 and 55 at both ends in the direction along the inner connecting portion 63. For this reason, in the overlapping portion 61, the portion near the outer coupling portions 54 and 55 has a strong force for maintaining the overlapping state. However, this force decreases as the distance from the outer coupling portions 54 and 55 increases, and becomes minimum at the central portion in the direction along the inner coupling portion 63, that is, both valve body portions 73 and 74. For this reason, the overlapping portion 61 pulled in the up-down direction is deformed in the up-down direction only at the valve body portions 73, 74 and the vicinity thereof.

内開口部71が上下方向にある程度開くと、重ね合わせ部61では、上流側膨張部47の高い内圧PIを受けた両弁体部73,74においてのみ、内開口部71を通って下流側膨張部48へ押し出される(反転される)。この内開口部71の上下方向の幅W1が狭いときには、先端部73T,74T同士が接触し合い、両弁体部73,74が先端部73T,74Tにおいて閉じている。この状態は、内開口部71の上記幅W1が、各弁体部73,74の幅W2(図11(C)参照)の合計値(=2・W2)よりも狭い期間続く。   When the inner opening 71 is opened to some extent in the vertical direction, the overlapping portion 61 expands on the downstream side through the inner opening 71 only in both valve body portions 73 and 74 that have received the high internal pressure PI of the upstream expansion portion 47. It is pushed out (inverted) to the part 48. When the vertical width W1 of the inner opening 71 is narrow, the tip portions 73T and 74T are in contact with each other, and both valve body portions 73 and 74 are closed at the tip portions 73T and 74T. This state continues for a period in which the width W1 of the inner opening 71 is narrower than the total value (= 2 · W2) of the width W2 (see FIG. 11C) of the valve body portions 73 and 74.

そして、幅W1がこの合計値(=2・W2)よりも大きくなると、先端部73T,74Tが離れて両弁体部73,74が開く(図11(C)参照)。そのため、上流側膨張部47内の膨張用ガスGが内開口部71及び両弁体部73,74間を順に通って下流側膨張部48へ流出することが可能となる。   When the width W1 becomes larger than the total value (= 2 · W2), the distal end portions 73T and 74T are separated to open both valve body portions 73 and 74 (see FIG. 11C). Therefore, the expansion gas G in the upstream expansion portion 47 can flow out between the inner opening 71 and the valve body portions 73 and 74 in order and flow out to the downstream expansion portion 48.

この膨張用ガスGの流出により、上流側膨張部47の内圧が上昇から低下に転ずる。ただし、ボディサイド部11は車内側へ依然として進入し続けていて、膨張部46が上流側膨張部47において乗員Pに押し付けられるため、乗員Pの上流側膨張部47側の受圧面積は増加し続ける。   Due to the outflow of the expansion gas G, the internal pressure of the upstream expansion portion 47 changes from increasing to decreasing. However, since the body side portion 11 continues to enter the vehicle inner side and the inflating portion 46 is pressed against the occupant P in the upstream inflating portion 47, the pressure receiving area on the upstream inflating portion 47 side of the occupant P continues to increase. .

また、進入量(ストローク)S2以降、膨張用ガスGにより下流側膨張部48が膨張を開始し、それに伴い同下流側膨張部48の内圧が上昇を開始する。また、内圧の上昇から少し遅れて、進入量(ストローク)がS3となったところで、車内側へ進入するボディサイド部11により、上流側膨張部47に加え、下流側膨張部48が乗員Pに接触し押し付けられるようになり、同乗員Pが下流側膨張部48の圧力を受ける面の面積(下流側膨張部48側の受圧面積)が増加し始める。   Further, after the approach amount (stroke) S2, the downstream side expansion portion 48 starts to expand due to the expansion gas G, and accordingly, the internal pressure of the downstream side expansion portion 48 starts to increase. Further, when the approach amount (stroke) becomes S3 with a slight delay from the increase of the internal pressure, the downstream side inflating part 48 is in addition to the occupant P in addition to the upstream side inflating part 47 by the body side part 11 entering the inside of the vehicle. It comes into contact and pressed, and the area of the surface where the passenger P receives the pressure of the downstream expansion portion 48 (pressure receiving area on the downstream expansion portion 48 side) starts to increase.

なお、上流側膨張部47の内圧と下流側膨張部48の内圧とは、進入量(ストローク)S4以降、等しくなる。
上記のように、調圧弁70の開弁(進入量(ストローク)S2)後には、上流側膨張部47の内圧が低下するとともに下流側膨張部48の内圧が上昇する。また、乗員Pの上流側膨張部47側の受圧面積、及び下流側膨張部48側の受圧面積が時間差をもって増加する。このため、進入量(ストローク)S2以降、乗員Pが膨張部46の全体から受ける荷重、すなわち、上流側膨張部47から受ける荷重と下流側膨張部48から受ける荷重との合計は、単に、エアバッグを単一の膨張部により構成し、かつ調圧弁を設けない場合(従来技術1)の最大値よりも低く、しかも略一定の値(所定値β)となる。
Note that the internal pressure of the upstream expansion portion 47 and the internal pressure of the downstream expansion portion 48 become equal after the approach amount (stroke) S4.
As described above, after the pressure regulating valve 70 is opened (entry amount (stroke) S2), the internal pressure of the upstream expansion portion 47 decreases and the internal pressure of the downstream expansion portion 48 increases. Further, the pressure receiving area on the upstream expansion portion 47 side and the pressure receiving area on the downstream expansion portion 48 side of the occupant P increase with a time difference. Therefore, after the approach amount (stroke) S2, the load that the occupant P receives from the entire inflating portion 46, that is, the sum of the load that is received from the upstream inflating portion 47 and the load that is received from the downstream inflating portion 48 is simply air When the bag is constituted by a single inflating portion and no pressure regulating valve is provided (prior art 1), the bag is lower than the maximum value and becomes a substantially constant value (predetermined value β).

また、膨張用ガスGの供給期間の初期には、乗員Pが膨張部46から受ける荷重が早期に増加すること、かつ、その後は同荷重が低い所定値βにほぼ維持されることから、膨張部46のエネルギー吸収量は、単に、エアバッグを単一の膨張部により構成し、かつ調圧弁を設けない場合(従来技術1)のエネルギー吸収量と同程度となる。第1実施形態のストローク−荷重特性は、従来技術1について、膨張部への膨張用ガスの供給期間の後半における荷重の高い領域(右上がりの斜線で示す部分Q)が、同供給期間の前半における荷重の低い領域(右下がりの斜線で示す部分R)にシフトしたような形態となる。部分Qと部分Rとでは形状が異なるが、面積は互いに略同一である。   Further, at the beginning of the supply period of the inflation gas G, the load received by the occupant P from the expansion portion 46 increases early, and thereafter, the load is substantially maintained at a low predetermined value β. The energy absorption amount of the portion 46 is approximately the same as the energy absorption amount when the airbag is configured by a single inflating portion and no pressure regulating valve is provided (prior art 1). In the stroke-load characteristic of the first embodiment, in the related art 1, the high load area in the second half of the supply period of the expansion gas to the expansion section (the portion Q indicated by the upward slanting diagonal line) is the first half of the supply period. It becomes a form which shifted to the low load area | region (part R shown with the slanting line of the lower right). The portions Q and R have different shapes, but the areas are substantially the same.

ところで、下流側膨張部48の上記膨張により、同下流側膨張部48が折り畳まれた順とは逆の順に折り状態を解消しようとする。下流側膨張部48は、ボディサイド部11と乗員Pの上半身の前半部(胸部PT)との間で、前方へ向けて、折り状態を解消(展開)しながら展開する。   By the way, due to the expansion of the downstream side expansion part 48, the folded state tries to be canceled in the reverse order of the order in which the downstream side expansion part 48 is folded. The downstream inflatable portion 48 is deployed between the body side portion 11 and the front half of the upper half of the occupant P (chest PT) while eliminating (deploying) the folded state.

このようにして、エアバッグ40が、乗員Pの上半身と、車内側へ進入してくるボディサイド部11との間に介在する。このエアバッグ40によって上半身が車幅方向内側へ押圧されて拘束される。そして、ボディサイド部11を通じて上半身へ伝わる側方からの衝撃がエアバッグ40によって緩和されて同上半身が保護される。   In this way, the airbag 40 is interposed between the upper body of the occupant P and the body side portion 11 entering the vehicle interior. The upper body is pressed and restrained by the airbag 40 inward in the vehicle width direction. And the impact from the side transmitted to the upper body through the body side part 11 is relieved by the airbag 40, and the upper body is protected.

ここで、乗員Pの上半身に対し側方から衝撃が加わった場合の耐衝撃性は、一般に、後半部において前半部よりも勝っている。これは、後半部には背骨があり、肋骨がその後部において背骨に接続されているのに対し、肋骨の前部は、上記背骨のような強度を有するものに接続されていないからである。そのため、エアバッグ40の膨張展開に伴い乗員Pの上半身に側方から作用する膨張部46の内圧は、前半部において後半部よりも低いことが望ましい。   Here, the impact resistance when an impact is applied from the side to the upper body of the occupant P is generally superior to the front half in the rear half. This is because the rear half has a spine and the rib is connected to the spine at the rear part, whereas the front part of the rib is not connected to the spine having the strength as described above. Therefore, it is desirable that the internal pressure of the inflating portion 46 acting on the upper body of the occupant P from the side as the airbag 40 is inflated and deployed is lower in the front half than in the rear half.

この点、第1実施形態では、膨張部46は、前後方向については、区画部材50が、上半身の前半部と後半部との境界部分の近傍に位置するように膨張する。エアバッグ40の膨張部46が膨張展開した状態では、上半身の後半部の側方近傍には上流側膨張部47が位置し、前半部の側方近傍には下流側膨張部48が位置する(図3参照)。従って、エアバッグ40による乗員Pの拘束初期には、乗員Pの上半身のうち前半部よりも耐衝撃性の高い後半部は、早期に内圧が高くなる上流側膨張部47によって押圧される。また、同拘束初期には、乗員Pの上半身のうち耐衝撃性の比較的低い前半部は、内圧が上流側膨張部47ほど高くならない下流側膨張部48によって押圧される。   In this regard, in the first embodiment, the expansion portion 46 expands so that the partition member 50 is positioned in the vicinity of the boundary portion between the front half and the rear half of the upper body in the front-rear direction. In the state in which the inflatable portion 46 of the airbag 40 is inflated and deployed, the upstream inflatable portion 47 is located near the side of the rear half of the upper body, and the downstream inflatable portion 48 is located near the side of the front half ( (See FIG. 3). Therefore, at the initial stage of restraining the occupant P by the airbag 40, the rear half of the upper half of the occupant P, which has higher impact resistance than the front half, is pressed by the upstream-side inflating portion 47 whose internal pressure increases early. In the initial stage of the restraint, the front half of the upper body of the occupant P, which has a relatively low impact resistance, is pressed by the downstream inflatable portion 48 whose internal pressure is not as high as that of the upstream inflatable portion 47.

以上詳述した第1実施形態によれば、次の効果が得られる。
(1)区画部材50を折り線51に沿って折り返すことにより、相対向する対向端部52,53を接近させてなる二つ折り状態にする。この二つ折り状態の区画部材50を、折り線51を対向端部52,53よりも上流側に位置させた状態で非膨張展開状態の膨張部46に配設する。さらに、区画部材50を、各対向端部52,53において外結合部54,55によってエアバッグ40の対応する布部43,44に結合するとともに、折り線51に沿う方向(略上下方向)の両端部において、周縁結合部45によって同両布部43,44に結合する。区画部材50にスリット状の内開口部71を設けるとともに、同内開口部71の周りに、互いに接近及び離間する一対の弁体部73,74を設けている(図6、図10)。
According to the first embodiment described in detail above, the following effects can be obtained.
(1) By folding the partition member 50 along the fold line 51, the opposing end portions 52 and 53 facing each other are brought into a double-folded state. The two-folded partition member 50 is disposed in the inflatable portion 46 in a non-inflated and deployed state with the fold line 51 positioned on the upstream side of the opposed end portions 52 and 53. Further, the partition member 50 is coupled to the corresponding cloth portions 43 and 44 of the airbag 40 by the outer coupling portions 54 and 55 at the respective facing end portions 52 and 53, and in the direction along the fold line 51 (substantially up and down direction). At both ends, the cloth is joined to the cloth parts 43 and 44 by the peripheral joint part 45. The partition member 50 is provided with a slit-like inner opening 71, and a pair of valve body parts 73 and 74 are provided around the inner opening 71 so as to approach and separate from each other (FIGS. 6 and 10).

このため、上流側膨張部47の膨張時には区画部材50に掛かるテンションによって調圧弁70を閉弁させ、上流側膨張部47内の膨張用ガスGが下流側膨張部48へ流出するのを規制することができる。   For this reason, the pressure regulating valve 70 is closed by the tension applied to the partition member 50 when the upstream expansion portion 47 is expanded, and the expansion gas G in the upstream expansion portion 47 is restricted from flowing out to the downstream expansion portion 48. be able to.

また、乗員拘束に伴う外力が膨張部46に加わるときには、上流側膨張部47の上昇する内圧によって、区画部材50における上部P2及び下部P3の形状を変化(反転)させて、区画部材50(中間部分P1)に掛かるテンションを変化させることができる。また、乗員Pとボディサイド部11(ドアトリム)との間で、膨張部46が潰されて、膨張部46自体が変形することによって、区画部材50(中間部分P1)に掛かるテンションを変化させることができる。これらの区画部材50(中間部分P1)のテンションの変化により、内開口部71の変形及び両弁体部73,74の作動を許容することができる。   Further, when an external force accompanying occupant restraint is applied to the expansion portion 46, the shape of the upper part P2 and the lower part P3 in the partition member 50 is changed (reversed) by the rising internal pressure of the upstream side expansion portion 47, and the partition member 50 (intermediate) The tension applied to the part P1) can be changed. Further, the expansion portion 46 is crushed between the occupant P and the body side portion 11 (door trim), and the expansion portion 46 itself is deformed to change the tension applied to the partition member 50 (intermediate portion P1). Can do. Due to the change in tension of these partition members 50 (intermediate portion P1), the deformation of the inner opening 71 and the operation of both valve body portions 73 and 74 can be permitted.

この際には、上部P2及び下部P3の上記反転により、区画部材50においてテンションの掛かっている領域を上下方向へ拡大し、内開口部71を同方向に引っ張って開きやすくすることができる。   At this time, the above-described inversion of the upper part P2 and the lower part P3 can enlarge the tensioned region of the partition member 50 in the vertical direction, and can easily open the inner opening 71 by pulling in the same direction.

上流側膨張部47の内圧によって両弁体部73,74を、内開口部71を通じて下流側膨張部48へ押し出し(反転させ)、先端部73T,74Tを離れさせることにより、上記規制を解除し、上流側膨張部47から下流側膨張部48へ膨張用ガスGを流出させることができる。   Both the valve body portions 73 and 74 are pushed out (inverted) to the downstream side expansion portion 48 through the inner opening 71 by the internal pressure of the upstream side expansion portion 47, and the tip portions 73T and 74T are separated to release the above restriction. The expansion gas G can flow out from the upstream expansion portion 47 to the downstream expansion portion 48.

このように、第1実施形態によれば、内開口部71と、一対の弁体部73,74といった簡単かつ安価な構造でありながら、膨張部46への膨張用ガスGの供給期間の初期には閉弁し、同供給期間の途中から開弁する調圧弁70を成立させることができる。そして、この調圧弁70の作動により、エアバッグ40を通じて乗員Pの上半身が受ける荷重の特性を、短時間で所定値βに到達し、その後は所定値βに維持されるといった、乗員Pを適切に拘束して保護するうえで好適な特性にすることができる。   As described above, according to the first embodiment, the initial period of the supply period of the expansion gas G to the expansion portion 46 is simple and inexpensive, such as the inner opening 71 and the pair of valve body portions 73 and 74. The pressure regulating valve 70 that is closed and opened from the middle of the supply period can be established. Then, by the operation of the pressure regulating valve 70, the characteristics of the load received by the upper body of the occupant P through the airbag 40 reach the predetermined value β in a short time, and thereafter the occupant P is appropriately maintained. Therefore, it is possible to obtain suitable characteristics for protection by restraining.

(2)2つの部材56,57の端縁58E,59E同士を合致させた状態で、両部材56,57の端部58,59同士を帯状に重ね合わせる。さらに、重ね合わせ部61と非重ね合わせ部62との境界部分に設けた内結合部63によって両部材56,57を結合することにより、区画部材50を形成する。内結合部63の一部において両部材56,57の結合を解除させることにより、内開口部71を形成する。そして、重ね合わせ部61において内開口部71に対応する箇所(近傍部分)を両弁体部73,74としている(図10)。   (2) The end portions 58 and 59 of the two members 56 and 57 are overlapped in a strip shape in a state where the end edges 58E and 59E of the two members 56 and 57 are matched. Further, the partition members 50 are formed by connecting the members 56 and 57 by the inner connecting portion 63 provided at the boundary portion between the overlapping portion 61 and the non-overlapping portion 62. The inner opening 71 is formed by releasing the coupling of the members 56 and 57 in a part of the inner coupling portion 63. And the location (vicinity part) corresponding to the inner opening part 71 in the superimposition part 61 is made into both valve body parts 73 and 74 (FIG. 10).

このため、2つの部材56,57における非重ね合わせ部62と重ね合わせ部61との境界部分を、一部を残した状態で結合することにより、区画部材50、内開口部71及び両弁体部73,74を一度に形成することができる。内開口部71の形成、及び両弁体部73,74の形成のために特別な作業を行わなくてもすむ。   For this reason, the boundary member between the non-overlapping portion 62 and the overlapping portion 61 in the two members 56 and 57 is joined in a state in which a part is left, so that the partition member 50, the inner opening 71 and the both valve bodies are combined. The portions 73 and 74 can be formed at a time. There is no need to perform a special operation for forming the inner opening 71 and forming both valve body portions 73 and 74.

特に、両弁体部73,74が区画部材50に一体となっている。より正確には、一方の弁体部73が部材56に一体となり、他方の弁体部74が部材57に一体となっている。そのため、両弁体部73,74が区画部材50(部材56,57)とは異なる部品からなる場合に比べ、部品点数を少なくすることができる。また、同部品を区画部材50(部材56,57)に結合する作業を行わなくてもすむ。   In particular, both valve body portions 73 and 74 are integrated with the partition member 50. More precisely, one valve body 73 is integrated with the member 56, and the other valve body 74 is integrated with the member 57. Therefore, compared with the case where both valve body parts 73 and 74 consist of parts different from the division member 50 (members 56 and 57), a number of parts can be decreased. Moreover, it is not necessary to perform the operation | work which couple | bonds the said components to the division member 50 (members 56 and 57).

(3)折り線51に沿う方向(略上下方向)の長さL1が、同折り線51に直交する方向の長さL2よりも長い区画部材50が引っ張られて平面状態になった場合、同区画部材50の短い方向(折り線51に直交する方向)に対し、長い方向(折り線51に沿う方向)に対するよりも強いテンションが掛かりやすい。この点、第1実施形態では、内開口部71を、区画部材50において折り線51に略直交する方向に沿って設けている(図9)。   (3) When the partition member 50 in which the length L1 in the direction along the fold line 51 (substantially in the vertical direction) is longer than the length L2 in the direction perpendicular to the fold line 51 is pulled to be in a planar state, A stronger tension is more easily applied to the short direction (direction perpendicular to the fold line 51) of the partition member 50 than to the long direction (direction along the fold line 51). In this regard, in the first embodiment, the inner opening 71 is provided along the direction substantially perpendicular to the fold line 51 in the partition member 50 (FIG. 9).

このため、上記強いテンションを内開口部71及び両弁体部73,74に作用させて、それらを一層確実に閉じさせることができる。
(4)両弁体部73,74を、膨張部46の膨張前に上流側膨張部47に配置している(図8)。
For this reason, the said strong tension is made to act on the inner opening part 71 and the both valve body parts 73 and 74, and they can be closed more reliably.
(4) Both valve body parts 73 and 74 are arranged in the upstream inflating part 47 before the inflating part 46 is inflated (FIG. 8).

そのため、上流側膨張部47の膨張時であって、乗員Pを拘束する前の状態では、両弁体部73,74を同上流側膨張部47の内圧によって互いに密着させて自己シール状態にすることができる(図11(A))。   Therefore, when the upstream expansion portion 47 is inflated and before the occupant P is restrained, both valve body portions 73 and 74 are brought into close contact with each other by the internal pressure of the upstream expansion portion 47 to be in a self-sealing state. (FIG. 11A).

また、エアバッグ40による乗員拘束時には、重ね合わせ部61を両弁体部73,74においてのみ反転させ、内開口部71を通じて下流側膨張部48へ押し出し(図11(B))、同内開口部71及び両弁体部73,74を開かせる(図11(C))ことができる。   Further, when the occupant is restrained by the airbag 40, the overlapping portion 61 is reversed only at both valve body portions 73 and 74, and is pushed out through the inner opening 71 to the downstream inflating portion 48 (FIG. 11B). The part 71 and both valve body parts 73 and 74 can be opened (FIG. 11C).

(5)一対の弁体部73,74を含む帯状の重ね合わせ部61の全体を折り曲げて非重ね合わせ部62に重ねた状態にし、さらに、内結合部63に沿う方向についての重ね合わせ部61の両端部を、外結合部54,55により、区画部材50の対向端部52,53とともにエアバッグ40の対応する布部43,44に結合している(図10)。   (5) The entire belt-shaped overlapping portion 61 including the pair of valve body portions 73 and 74 is folded and overlapped with the non-overlapping portion 62, and further, the overlapping portion 61 in the direction along the inner coupling portion 63. Both end portions of the air bag 40 are coupled to the corresponding cloth portions 43 and 44 of the airbag 40 together with the opposed end portions 52 and 53 of the partition member 50 by the outer coupling portions 54 and 55 (FIG. 10).

そのため、上流側膨張部47が膨張したときに区画部材50に対し、内開口部71を閉じさせる方向のテンションを掛けるだけでなく、重ね合わせ部61に対し、両弁体部73,74を互いに密着させる方向のテンションを掛け、内開口部71及び両弁体部73,74をより一層確実に閉じさせることができる。   Therefore, not only is the tension in the direction in which the inner opening 71 is closed applied to the partition member 50 when the upstream inflating portion 47 is inflated, but both valve body portions 73 and 74 are mutually attached to the overlapping portion 61. The inner opening 71 and the two valve body parts 73 and 74 can be more reliably closed by applying a tension in the direction of close contact.

(第2実施形態)
次に、本発明を具体化した第2実施形態について、図14〜図17を参照して説明する。
(Second Embodiment)
Next, a second embodiment embodying the present invention will be described with reference to FIGS.

第2実施形態では、図14〜図16の少なくとも1つに示すように、両弁体部73,74を含む重ね合わせ部61が、膨張部46の膨張前に下流側膨張部48に配置されている点において、第1実施形態と異なっている。そのため、第1実施形態と同様の箇所及び部材については、同一の符号を付して詳しい説明を省略する。なお、図14中、一点鎖線の大きな丸い枠Yで囲まれた箇所は、小さな丸い枠Yで囲まれた箇所を拡大して示している。   In the second embodiment, as shown in at least one of FIGS. 14 to 16, the overlapping portion 61 including both valve body portions 73 and 74 is disposed in the downstream side expansion portion 48 before the expansion portion 46 is expanded. This is different from the first embodiment. Therefore, the same portions and members as those in the first embodiment are denoted by the same reference numerals and detailed description thereof is omitted. In FIG. 14, a portion surrounded by a large round frame Y with a one-dot chain line shows an enlarged portion surrounded by a small round frame Y.

この場合には、両弁体部73,74を含む重ね合わせ部61が、第1実施形態と若干異なる挙動をする。
区画部材50は、膨張部46への膨張用ガスGの供給前には、折り線51を対向端部52,53よりも上流側に位置させてなる二つ折り状態となっている(図14、図15参照)。
In this case, the overlapping portion 61 including both valve body portions 73 and 74 behaves slightly different from the first embodiment.
The partition member 50 is in a double-folded state in which the folding line 51 is positioned upstream of the opposed end portions 52 and 53 before the supply of the expansion gas G to the expansion portion 46 (FIG. 14). FIG. 15).

図16及び図17(A)に示すように、膨張部46への膨張用ガスGの供給により上流側膨張部47の膨張が開始すると、二つ折り状態の区画部材50が引っ張られる。区画部材50に対し、折り線51に沿う方向や直交する方向にテンションが掛かる。このテンションにより、区画部材50では中間部分P1が略平面状の緊張状態になるが、上部P2及び下部P3は、折り線51を対向端部52,53よりも上流側に位置させた屈曲状態となる。   As shown in FIGS. 16 and 17A, when the expansion of the upstream expansion portion 47 is started by the supply of the expansion gas G to the expansion portion 46, the partition member 50 in a folded state is pulled. Tension is applied to the partition member 50 in a direction along the fold line 51 or in a direction orthogonal thereto. This tension causes the intermediate portion P1 to be in a substantially planar tension state in the partition member 50, but the upper portion P2 and the lower portion P3 are in a bent state in which the folding line 51 is positioned upstream of the opposed end portions 52 and 53. Become.

ここで、L1>L2の関係を満たす区画部材50では、短い方向(折り線51に直交する方向)に対し、長い方向(折り線51に沿う方向)に対するよりも強いテンションが掛かりやすい。そのため、折り線51に略直交する方向に沿う内開口部71は、上記のテンションの強弱関係により閉じられやすい。   Here, in the partition member 50 satisfying the relationship of L1> L2, a stronger tension is easily applied to the short direction (the direction perpendicular to the fold line 51) than to the long direction (the direction along the fold line 51). Therefore, the inner opening 71 along the direction substantially orthogonal to the fold line 51 is likely to be closed due to the tension relationship described above.

また、上流側膨張部47が膨張したときに区画部材50に対するだけでなく、両弁体部73,74を含む重ね合わせ部61に対しても、内開口部71の延びる方向にテンションが掛かる。このテンションにより、両弁体部73,74がそれらの面全体で互いに密着して、膨張用ガスGの漏れを抑制したシール状態になろうとする。内結合部63に沿う方向について、重ね合わせ部61の両端部がエアバッグ40の布部43,44に結合されていない場合に比べ、両弁体部73,74間が閉じられやすい。そのため、上流側膨張部47内の膨張用ガスGは、内開口部71及び両弁体部73,74間を通って下流側膨張部48へ流出しにくい。   Further, when the upstream expansion portion 47 expands, not only the partition member 50 but also the overlapping portion 61 including both valve body portions 73 and 74 are tensioned in the extending direction of the inner opening 71. Due to this tension, both valve body portions 73 and 74 are brought into close contact with each other over their entire surface, and a sealing state is attempted in which leakage of the expansion gas G is suppressed. Compared with the case where both end portions of the overlapping portion 61 are not coupled to the fabric portions 43 and 44 of the airbag 40 in the direction along the inner coupling portion 63, the space between both valve body portions 73 and 74 is easily closed. Therefore, the expansion gas G in the upstream expansion portion 47 hardly flows out to the downstream expansion portion 48 through the inner opening 71 and both the valve body portions 73 and 74.

なお、両弁体部73,74は下流側膨張部48に位置しているため、第1実施形態とは異なり、上流側膨張部47の内圧が両弁体部73,74に対し、その重なり方向(厚み方向)についての両側から加わって、両弁体部73,74が自己シール状態になることはない。この内圧により、両弁体部73,74を含む重ね合わせ部61が区画部材50の非重ね合わせ部62に押し付けられることもない。   In addition, since both valve body parts 73 and 74 are located in the downstream expansion part 48, unlike 1st Embodiment, the internal pressure of the upstream expansion part 47 overlaps with respect to both valve body parts 73 and 74. In addition, both valve body portions 73 and 74 are not in a self-sealing state by adding from both sides in the direction (thickness direction). Due to this internal pressure, the overlapping portion 61 including both valve body portions 73 and 74 is not pressed against the non-overlapping portion 62 of the partition member 50.

両弁体部73,74が閉じられた状態で、上流側膨張部47内に膨張用ガスGが供給され続ける一方、図17(B)に示すように、乗員拘束に伴う外力が加わって膨張部46が押圧されて変形すると、区画部材50に掛かるテンションが変化する。また、膨張部46の上記変形に伴い上流側膨張部47の内圧PIがさらに上昇して、区画部材50の中間部分P1が下流側膨張部48側へ押圧されて、同中間部分P1に掛かるテンションが変化する。   While both the valve body portions 73 and 74 are closed, the inflation gas G continues to be supplied into the upstream-side expansion portion 47, and as shown in FIG. When the portion 46 is pressed and deformed, the tension applied to the partition member 50 changes. Further, the internal pressure PI of the upstream-side expansion portion 47 further increases with the deformation of the expansion portion 46, and the intermediate portion P1 of the partition member 50 is pressed toward the downstream-side expansion portion 48, and the tension applied to the intermediate portion P1. Changes.

また、上昇した上記内圧PIにより、区画部材50の上部P2及び下部P3が押圧されて下流側膨張部48側へ膨らむように変形する(図17(B)の実線参照)。すなわち、上部P2及び下部P3は、乗員拘束前の上記屈曲状態(図17(B)の二点鎖線参照)から反転したような形状に変形し、中間部分P1においてテンションの変化が容易に発生し、内開口部71の変形及び弁体部73,74の作動がともに許容される。   Further, the upper pressure P2 and the lower portion P3 of the partition member 50 are pressed by the increased internal pressure PI and deformed so as to swell toward the downstream side expansion portion 48 (see the solid line in FIG. 17B). That is, the upper part P2 and the lower part P3 are deformed into a shape that is inverted from the bent state before the occupant restraint (see the two-dot chain line in FIG. 17B), and the tension change easily occurs in the intermediate part P1. Both the deformation of the inner opening 71 and the operation of the valve body parts 73 and 74 are allowed.

ただし、上記中間部分P1の変形時には、両端部において固定された両重ね合わせ部61も押圧されて、両端部以外の箇所において下流側膨張部48側へ膨らむように変形する。この変形の方向と両弁体部73,74の厚み方向とは同じであるため、両弁体部73,74は、面方向について互いに離間する方向に比べ、厚み方向に動きにくい。そのため、乗員拘束に伴い加わる外力がさほど大きくないときには、両弁体部73,74は互いに密着した状態を維持し、高いシール性を発揮する。   However, when the intermediate portion P1 is deformed, the two overlapping portions 61 fixed at both end portions are also pressed and deformed so as to swell toward the downstream inflating portion 48 at locations other than both end portions. Since the direction of this deformation and the thickness direction of both valve body portions 73 and 74 are the same, both valve body portions 73 and 74 are less likely to move in the thickness direction than in the direction of separating from each other in the plane direction. Therefore, when the external force applied due to the occupant restraint is not so large, both valve body portions 73 and 74 are kept in close contact with each other and exhibit high sealing performance.

乗員拘束に伴い加わる外力が大きくなっていくと、上部P2及び下部P3の上記反転により、区画部材50においてテンションの掛かっている領域が、上下方向へ拡がっていく。区画部材50の上側の部材56に対しては上方へ向かうテンションが強まり、下側の部材57に対しては下方へ向かうテンションが強まる。これらのテンションの変化により、スリット状の内開口部71が上下方向に引っ張られて開きやすくなる。   As the external force applied in accordance with the occupant restraint increases, the tensioned region in the partition member 50 expands in the vertical direction due to the inversion of the upper part P2 and the lower part P3. The upward tension is increased for the upper member 56 of the partition member 50, and the downward tension is increased for the lower member 57. Due to these changes in tension, the slit-like inner opening 71 is easily pulled up and down.

内開口部71の上下方向の幅W1が拡がるに従い、上側の弁体部73が矢印AUで示すように上方へ引っ張られ、下側の弁体部74が矢印ALで示すように下方へ引っ張られる。重ね合わせ部61において外結合部54,55に近い部分では、重ね合わされた状態を維持しようとする力が強い。しかし、この力は、外結合部54,55から遠ざかるに従い小さくなり、内結合部63に沿う方向についての中央部分、すなわち両弁体部73,74において最小となる。このため、上下方向へ引っ張られた重ね合わせ部61は、弁体部73,74及びその近傍部分において、互いに離間する方向である上下方向へ変形し、両弁体部73,74の重なり部分が徐々に少なくなっていく。   As the vertical width W1 of the inner opening 71 increases, the upper valve body 73 is pulled upward as indicated by the arrow AU, and the lower valve body 74 is pulled downward as indicated by the arrow AL. . In the overlapping portion 61, the portion near the outer coupling portions 54 and 55 has a strong force for maintaining the overlapping state. However, this force decreases as the distance from the outer coupling portions 54 and 55 increases, and becomes minimum at the central portion in the direction along the inner coupling portion 63, that is, both valve body portions 73 and 74. For this reason, the overlapping portion 61 pulled in the up-down direction is deformed in the up-down direction, which is a direction away from each other, in the valve body portions 73, 74 and the vicinity thereof, and the overlapping portion of both valve body portions 73, 74 is It gradually decreases.

そして、図17(C)に示すように、少なくとも一方(例えば下側)の弁体部74が少なからず前方側へ傾斜させられ(倒され)ると、調圧弁70が開弁した状態となる。その結果、上流側膨張部47内の膨張用ガスGが、同図17(C)において矢印で示すように、内開口部71及び両弁体部73,74間を通って前方へ向けて流れ、下流側膨張部48へ流出するようになる。   Then, as shown in FIG. 17C, when at least one (for example, the lower side) valve body 74 is tilted forward (not over), the pressure regulating valve 70 is opened. . As a result, the expansion gas G in the upstream expansion portion 47 flows forward through the inner opening 71 and the valve body portions 73 and 74 as indicated by arrows in FIG. Then, it flows out to the downstream side expansion portion 48.

従って、第2実施形態によると、上述した(1)〜(3),(5)に加え、次の効果が得られる。
(6)両弁体部73,74を含む重ね合わせ部61を、膨張部46の膨張前に下流側膨張部48に配置している(図14、図16)。
Therefore, according to the second embodiment, in addition to (1) to (3) and (5) described above, the following effects can be obtained.
(6) The overlapping portion 61 including both valve body portions 73 and 74 is disposed in the downstream side expansion portion 48 before the expansion portion 46 is expanded (FIGS. 14 and 16).

この構成により、両弁体部73,74を含む重ね合わせ部61に対し重なり方向(厚み方向)の両側から膨張用ガスGによる圧力が加わらないことから、第1実施形態とは異なり、重ね合わせ部61を同圧力によって密着させて自己シール状態にしたり、重ね合わせ部61を非重ね合わせ部62に押圧させたりする効果は期待できない。   With this configuration, since the pressure by the expansion gas G is not applied to the overlapping portion 61 including both valve body portions 73 and 74 from both sides in the overlapping direction (thickness direction), the overlapping portion is different from the first embodiment. The effect that the part 61 is brought into close contact with the same pressure to be in a self-sealing state or the overlapping part 61 is pressed against the non-overlapping part 62 cannot be expected.

しかし、重ね合わせ部61を内結合部63に沿って折り曲げて非重ね合わせ部62に重ね、内結合部63に沿う方向についての同重ね合わせ部61の両端部を非重ね合わせ部62とともにエアバッグ40の対応する布部43,44に結合している(図15、図16)。さらに、折り線51に沿う方向の長さL1が、同折り線51に直交する方向の長さL2よりも長い区画部材50において、より強いテンションの掛かる、折り線51に略直交する方向に沿って内開口部71を設けている(図15、図16)。   However, the overlapping portion 61 is folded along the inner coupling portion 63 and superimposed on the non-overlapping portion 62, and both ends of the overlapping portion 61 in the direction along the inner coupling portion 63 are airbags together with the non-overlapping portion 62. It couple | bonds with 40 corresponding cloth parts 43 and 44 (FIG. 15, FIG. 16). Further, in the partition member 50 in which the length L1 in the direction along the fold line 51 is longer than the length L2 in the direction orthogonal to the fold line 51, a stronger tension is applied along the direction substantially orthogonal to the fold line 51. The inner opening 71 is provided (FIGS. 15 and 16).

そのため、上流側膨張部47が膨張したときに、区画部材50に対し、内開口部71の延びる方向に強いテンションを掛けるだけでなく、重ね合わせ部61に対し、内開口部71の延びる方向に強いテンションを掛けることができる。その結果、両弁体部73,74を互いに密着させて、上流側膨張部47内の膨張用ガスGが下流側膨張部48へ流出するのを規制することができる。   Therefore, when the upstream expansion portion 47 expands, not only a strong tension is applied to the partition member 50 in the direction in which the inner opening 71 extends, but also the overlapping portion 61 extends in the direction in which the inner opening 71 extends. A strong tension can be applied. As a result, the valve body portions 73 and 74 can be brought into close contact with each other to restrict the expansion gas G in the upstream expansion portion 47 from flowing out to the downstream expansion portion 48.

(第3実施形態)
次に、本発明を具体化した第3実施形態について、図18〜図26を参照して説明する。
(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIGS.

図23に示すように、平面状態となったとき、折り線51に沿う方向の長さL1が、同折り線51に直交する方向の長さL2よりも長くなる区画部材50は、第3実施形態では、車幅方向に並べられた2つの部材81,82からなる。図18〜図22の少なくとも1つに示すように、両部材81,82では、それらの端部83,84の端縁83E,84E同士が合致させられた状態で、端部83,84同士が、上下方向に細長い帯状に重ね合わされている。両部材81,82は、帯状の重ね合わせ部61と、それ以外の部分(非重ね合わせ部)との境界部分において上下方向へ直線状に延びる内結合部63によって相互に結合されている。内結合部63は、上記両部材81,82の端縁83E,84Eから一定距離離れていて、折り線51を兼ねている。従って、内結合部63は折り線51上に設けられていることになる。   As shown in FIG. 23, the partition member 50 in which the length L1 in the direction along the fold line 51 is longer than the length L2 in the direction orthogonal to the fold line 51 when the flat state is obtained is the third embodiment. In a form, it consists of two members 81 and 82 arranged in the vehicle width direction. As shown in at least one of FIGS. 18 to 22, in both members 81, 82, the end portions 83, 84 are in a state where the end edges 83 </ b> E, 84 </ b> E of the end portions 83, 84 are matched. , They are stacked in the form of strips that are elongated in the vertical direction. Both members 81 and 82 are coupled to each other by an inner coupling portion 63 that extends linearly in the vertical direction at a boundary portion between the strip-shaped overlapping portion 61 and the other portion (non-overlapping portion). The inner coupling portion 63 is separated from the end edges 83E and 84E of the both members 81 and 82 by a certain distance, and also serves as the folding line 51. Therefore, the inner coupling part 63 is provided on the folding line 51.

上記区画部材50には調圧弁70が設けられている。より詳しくは、上記内結合部63は、その一部(第3実施形態では上下方向の中央部分)において結合を解除されている。上下方向の中央部分では、両部材81,82を結合させる内結合部63が設けられていない。結合を解除された箇所は、上流側膨張部47と下流側膨張部48とを連通させるスリット状の内開口部71を構成している。   The partition member 50 is provided with a pressure regulating valve 70. More specifically, the inner coupling portion 63 is decoupled at a part thereof (in the third embodiment, the central portion in the vertical direction). In the central portion in the vertical direction, the inner coupling portion 63 that couples both the members 81 and 82 is not provided. The location where the coupling is released constitutes a slit-like inner opening 71 that allows the upstream expansion portion 47 and the downstream expansion portion 48 to communicate with each other.

重ね合わせ部61において、内開口部71に対応する部分(近傍部分、より正確には、内開口部71と端縁83E,84Eとの間の部分)は一対の弁体部78,79を構成している。一対の弁体部78,79を一部に有する重ね合わせ部61は、膨張部46の膨張前には上流側膨張部47に配置されている。また、内開口部71及び両弁体部78,79は、区画部材50の中間部分P1に位置している。   In the overlapping portion 61, a portion corresponding to the inner opening 71 (a vicinity portion, more precisely, a portion between the inner opening 71 and the end edges 83E and 84E) constitutes a pair of valve body portions 78 and 79. is doing. The overlapping portion 61 having a part of the pair of valve body portions 78 and 79 is disposed in the upstream side expansion portion 47 before the expansion portion 46 is expanded. Further, the inner opening 71 and the both valve body portions 78 and 79 are located in the intermediate portion P <b> 1 of the partition member 50.

そして、帯状の重ね合わせ部61は、内結合部63に沿う方向の両端部、すなわち上端部及び下端部において、前述した周縁結合部45により、二つ折り状態の区画部材50と同様、エアバッグ40の両布部43,44に重ねられて結合(共縫い)されている。なお、第1及び第2実施形態とは異なり、重ね合わせ部61は、非重ね合わせ部側へは折り曲げられていない。   The belt-like overlapping portion 61 is formed at the both end portions in the direction along the inner coupling portion 63, that is, at the upper end portion and the lower end portion, by the peripheral coupling portion 45 described above, similarly to the half-folded partition member 50. The two fabric portions 43 and 44 are overlapped and joined (co-sewn). Note that, unlike the first and second embodiments, the overlapping portion 61 is not bent toward the non-overlapping portion.

上記以外の構成は第1実施形態と同様である。そのため、第1実施形態と同様の箇所、部材等については同一の符号を付すことで、詳しい説明を省略する。
第3実施形態のサイドエアバッグ装置では、側突等により車両が衝撃を受けてインフレータ31から膨張用ガスGが供給されると、上流側膨張部47が膨張を開始する。
Other configurations are the same as those in the first embodiment. For this reason, the same parts and members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
In the side airbag device of the third embodiment, when the vehicle receives an impact due to a side collision or the like and the inflation gas G is supplied from the inflator 31, the upstream side inflation portion 47 starts to inflate.

膨張部46内では、二つ折り状態の区画部材50が、折り線51(内結合部63)を対向端部52,53よりも上流側に位置させた状態で配設されている。しかも、その区画部材50は、両対向端部52,53の各々において、外結合部54,55によってエアバッグ40の対応する布部43,44に結合されている。また、区画部材50は、折り線51(内結合部63)に沿う方向の両端部(上端部及び下端部)の各々において、周縁結合部45によって両布部43,44に結合されている(図19、図20参照)。そのため、上記のように上流側膨張部47の膨張が開始すると、二つ折り状態の区画部材50が引っ張られる。区画部材50に対し、折り線51(内結合部63)に沿う方向や直交する方向にテンションが掛かる(図23参照)。   In the inflating portion 46, the two-folded partition member 50 is disposed in a state where the folding line 51 (inner coupling portion 63) is positioned upstream of the opposed end portions 52 and 53. In addition, the partition member 50 is coupled to the corresponding cloth portions 43 and 44 of the airbag 40 by the outer coupling portions 54 and 55 at the opposite end portions 52 and 53, respectively. Further, the partition member 50 is coupled to both the cloth portions 43 and 44 by the peripheral coupling portion 45 at each of both end portions (upper end portion and lower end portion) in the direction along the folding line 51 (inner coupling portion 63) ( (Refer FIG. 19, FIG. 20). Therefore, when the expansion of the upstream expansion portion 47 is started as described above, the partition member 50 in a folded state is pulled. Tension is applied to the partition member 50 in the direction along the fold line 51 (inner coupling portion 63) or in the orthogonal direction (see FIG. 23).

このテンションにより、区画部材50では中間部分P1が略平面状の緊張状態になる(図22参照)が、上部P2及び下部P3は、折り線51(内結合部63)を対向端部52,53よりも上流側に位置させた屈曲状態となる。   Due to this tension, in the partition member 50, the intermediate portion P1 is in a substantially planar tension state (see FIG. 22), but the upper portion P2 and the lower portion P3 have the folding line 51 (inner coupling portion 63) facing the opposite end portions 52 and 53. It will be in the bending state located in the upstream rather than.

ここで、第3実施形態では、L1>L2の関係を満たす区画部材50において、内開口部71が折り線51(内結合部63)に沿う方向に沿って設けられている(図23参照)。一方、この区画部材50においては、短い方向(折り線51に直交する方向)に対し、長い方向(折り線51に沿う方向)に対するよりも強いテンションが掛かりやすい。そのため、上記のテンションの強弱関係により、内開口部71が開かれるおそれがある。   Here, in 3rd Embodiment, in the division member 50 satisfy | filling the relationship of L1> L2, the inner opening part 71 is provided along the direction in alignment with the fold line 51 (inner coupling part 63) (refer FIG. 23). . On the other hand, in the partition member 50, a stronger tension is easily applied to a short direction (a direction perpendicular to the fold line 51) than to a long direction (a direction along the fold line 51). Therefore, there is a possibility that the inner opening 71 may be opened due to the tension relationship described above.

しかし、図24に示すように、上流側膨張部47に位置する、両弁体部78,79を含む重ね合わせ部61に対しては、膨張用ガスGの供給に伴い上昇する上流側膨張部47の内圧PIが、その重ね合わせ部61の重なり方向についての両側(車幅方向両側)から加わる。両弁体部78,79は、互いに密着した自己シール状態となる。区画部材50は、調圧弁70を除く箇所において、膨張部46を上流側膨張部47及び下流側膨張部48に完全に区画している。そのため、上流側膨張部47内の膨張用ガスGは、両弁体部78,79間及び内開口部71を通って、また、それ以外の箇所を通って、下流側膨張部48へ流出することを規制される。   However, as shown in FIG. 24, the upstream expansion portion that rises as the expansion gas G is supplied to the overlapping portion 61 including both valve body portions 78 and 79 located in the upstream expansion portion 47. The internal pressure PI of 47 is applied from both sides (both sides in the vehicle width direction) of the overlapping portion 61 in the overlapping direction. Both valve body parts 78 and 79 are in a self-sealing state in close contact with each other. The partition member 50 completely partitions the expansion portion 46 into an upstream expansion portion 47 and a downstream expansion portion 48 at locations other than the pressure regulating valve 70. Therefore, the expansion gas G in the upstream side expansion portion 47 flows out to the downstream side expansion portion 48 through both the valve body portions 78 and 79 and through the inner opening portion 71 and through other portions. Be regulated.

膨張用ガスGの供給に伴い上流側膨張部47の膨張が進むと、高くなった上流側膨張部47の内圧PIにより、図25に示すように、重ね合わせ部61が弁体部78,79においてのみ内開口部71を通じて下流側膨張部48側へ押し出される(弁体部78,79が反転する)。このとき、区画部材50が平面状に緊張することで内開口部71が引っ張られて車幅方向へ拡がったとしても、両弁体部78,79は、それらの先端部78T,79Tにおいて接触して閉じた状態を維持しようとする。すなわち、区画部材50の緊張により内開口部71及び両弁体部78,79には、これらを開かせようとする力が作用する。この力は、内開口部71において最も大きく、同内開口部71から遠ざかるに従い小さくなり、弁体部78,79の先端部78T,79Tにおいて最小となる。結果として、調圧弁70が閉弁状態を維持し、上流側膨張部47内の膨張用ガスGが、内開口部71及び両弁体部78,79間を通って下流側膨張部48へ流出することを引き続き規制される。   When the upstream side expansion portion 47 expands with the supply of the expansion gas G, the overlapping portion 61 has the valve body portions 78 and 79 as shown in FIG. 25 due to the increased internal pressure PI of the upstream side expansion portion 47. Is pushed out through the inner opening 71 to the downstream expansion portion 48 side (the valve body portions 78 and 79 are inverted). At this time, even if the inner opening 71 is pulled and expanded in the vehicle width direction by the tension of the partition member 50 being flat, both the valve body portions 78 and 79 are in contact with each other at their tip portions 78T and 79T. Try to keep it closed. That is, due to the tension of the partition member 50, a force for opening these acts on the inner opening 71 and both valve body portions 78 and 79. This force is greatest at the inner opening 71, decreases as the distance from the inner opening 71 increases, and is minimized at the tip portions 78T and 79T of the valve body portions 78 and 79. As a result, the pressure regulating valve 70 maintains the closed state, and the expansion gas G in the upstream side expansion portion 47 flows out between the inner opening portion 71 and the valve body portions 78 and 79 to the downstream side expansion portion 48. Will continue to be regulated.

さらに、図26に示すように、乗員Pの拘束に際し、進入するボディサイド部11による外力が加わって膨張部46が車外側から押圧されて(潰されて)変形すると、区画部材50に加わるテンションが低下する。この低下によって内開口部71に掛かるテンションが低下する。また、膨張部46の上記変形に伴い上流側膨張部47の内圧がさらに上昇することで、区画部材50の中間部分P1が下流側膨張部48側へ押圧されて、同中間部分P1に掛かるテンションが変化する。また、上昇した上記内圧により、区画部材50の上部P2及び下部P3が押圧されて下流側膨張部48側へ膨らむように変形する。すなわち、上部P2及び下部P3が乗員拘束前の上記屈曲状態から反転したような形状に変形し、中間部分P1においてテンションの変化が容易に発生する。内開口部71が変形しやすくなり、弁体部78,79が作動しやすくなる。   Further, as shown in FIG. 26, when the occupant P is restrained, the external force applied by the entering body side portion 11 is applied and the expansion portion 46 is pressed (crushed) and deformed from the outside of the vehicle. Decreases. This decrease reduces the tension applied to the inner opening 71. Further, as the internal pressure of the upstream expansion portion 47 further increases with the deformation of the expansion portion 46, the intermediate portion P1 of the partition member 50 is pressed toward the downstream expansion portion 48, and the tension applied to the intermediate portion P1. Changes. Further, due to the increased internal pressure, the upper part P2 and the lower part P3 of the partition member 50 are pressed and deformed so as to swell toward the downstream inflating part 48 side. That is, the upper part P2 and the lower part P3 are deformed into a shape that is inverted from the bent state before the occupant restraint, and a tension change easily occurs in the intermediate part P1. The inner opening 71 is easily deformed, and the valve bodies 78 and 79 are easily operated.

このような状況のもと、上流側膨張部47の内圧の上記上昇により、内開口部71が開かれる。また、弁体部79及び弁体部78が互いに遠ざかる側(車外側及び車内側)へ変位する。これらの変位により、先端部79T,78Tが互いに離間して、調圧弁70が開弁した状態になると、上流側膨張部47内の膨張用ガスGは、図26中矢印で示すように、内開口部71及び両弁体部79,78間を通って下流側膨張部48へ流出するようになる。   Under such circumstances, the inner opening 71 is opened by the above-described increase in the internal pressure of the upstream-side expansion portion 47. Further, the valve body 79 and the valve body 78 are displaced to the side away from each other (the vehicle outer side and the vehicle inner side). When the distal end portions 79T and 78T are separated from each other by these displacements and the pressure regulating valve 70 is opened, the expansion gas G in the upstream expansion portion 47 is changed to an internal gas as shown by an arrow in FIG. It flows out to the downstream side expansion part 48 through between the opening part 71 and the both valve body parts 79 and 78.

各膨張部47,48内の膨張用ガスGの圧力(内圧)と、乗員Pの各膨張部47,48側の受圧面積と、乗員Pがエアバッグ40から受ける荷重とが、衝撃により車内側へ進入するボディサイド部11の進入量(ストローク)に応じてどのように変化するかについては、第1実施形態(図12参照)で説明したものとほぼ同様となる。   The pressure (internal pressure) of the inflation gas G in each inflatable portion 47, 48, the pressure receiving area of the occupant P on the side of each inflatable portion 47, 48, and the load that the occupant P receives from the airbag 40 are affected by the impact. About how it changes according to the approach amount (stroke) of the body side part 11 approaching to, it becomes substantially the same as what was demonstrated in 1st Embodiment (refer FIG. 12).

従って、第3実施形態によると、上述した(1),(2)と同様の効果が得られる。
また、第3実施形態では、L1>L2の関係を満たす区画部材50において、折り線51(内結合部63)に沿って内開口部71を設けていることから、内開口部71を折り線51(内結合部63)に略直交する方向に沿って設けた第1実施形態ほど、内開口部71に沿う方向に強いテンションが掛かることを期待できない。
Therefore, according to the third embodiment, the same effects as (1) and (2) described above can be obtained.
In the third embodiment, in the partition member 50 that satisfies the relationship of L1> L2, the inner opening 71 is provided along the fold line 51 (inner coupling portion 63). As much as the first embodiment provided along the direction substantially orthogonal to 51 (inner coupling portion 63), it cannot be expected that a stronger tension is applied in the direction along the inner opening 71.

しかし、第3実施形態では、両弁体部78,79を含む重ね合わせ部61を、膨張部46の膨張前に上流側膨張部47に配置している点では、第1実施形態と同じである。従って、上記(4)において説明したのと同様に、上流側膨張部47の内圧PIを重ね合わせ部61の重なり方向についての両側から加えることができる。その結果として、両弁体部78,79を互いに密着させ、両弁体部78,79間での膨張用ガスGの流通を規制した自己シール状態にして、上流側膨張部47内の膨張用ガスGが下流側膨張部48へ流出するのを規制することができる。   However, the third embodiment is the same as the first embodiment in that the overlapping portion 61 including both valve body portions 78 and 79 is arranged in the upstream side expansion portion 47 before the expansion portion 46 is expanded. is there. Accordingly, as described in the above (4), the internal pressure PI of the upstream expansion portion 47 can be applied from both sides in the overlapping direction of the overlapping portion 61. As a result, the valve body portions 78 and 79 are brought into close contact with each other, and the self-sealing state in which the flow of the expansion gas G between the valve body portions 78 and 79 is regulated is established. It is possible to restrict the gas G from flowing out to the downstream expansion portion 48.

(第4実施形態)
次に、本発明を具体化した第4実施形態について、図27〜図29を参照して説明する。
(Fourth embodiment)
Next, a fourth embodiment embodying the present invention will be described with reference to FIGS.

第4実施形態では、両弁体部78,79を含む重ね合わせ部61が、膨張部46の膨張前に下流側膨張部48に配置されている点においてのみ、第3実施形態と異なっている。そのため、第3実施形態と同様の箇所及び部材については、同一の符号を付して詳しい説明を省略する。   The fourth embodiment differs from the third embodiment only in that the overlapping portion 61 including both valve body portions 78 and 79 is disposed in the downstream side expansion portion 48 before the expansion portion 46 is expanded. . Therefore, the same parts and members as those in the third embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

この場合には、両弁体部78,79を含む重ね合わせ部61が第3実施形態と若干異なる挙動をする。
区画部材50は、膨張部46への膨張用ガスGの供給前には、折り線51(内結合部63)を対向端部52,53よりも上流側に位置させてなる二つ折り状態となっている(図27、図28参照)。
In this case, the overlapping portion 61 including both valve body portions 78 and 79 behaves slightly different from the third embodiment.
The partition member 50 is in a double-folded state in which the folding line 51 (inner coupling portion 63) is positioned upstream of the opposed end portions 52 and 53 before the supply of the expansion gas G to the expansion portion 46. (See FIGS. 27 and 28).

膨張部46への膨張用ガスGの供給により上流側膨張部47の膨張が開始すると、二つ折り状態の区画部材50に対し、折り線51(内結合部63)に沿う方向や直交する方向にテンションが掛かる。このテンションにより、区画部材50では中間部分P1が略平面状の緊張状態になる(図29参照)が、上部P2及び下部P3は、折り線51(内結合部63)を対向端部52,53よりも上流側に位置させた屈曲状態となる。   When the expansion of the upstream expansion portion 47 is started by the supply of the expansion gas G to the expansion portion 46, the partition member 50 is folded in a direction along the fold line 51 (inner coupling portion 63) or in a direction orthogonal thereto. Tension is applied. Due to this tension, the intermediate portion P1 of the partition member 50 is in a substantially planar tension state (see FIG. 29), but the upper portion P2 and the lower portion P3 have the folding line 51 (inner coupling portion 63) facing the opposite end portions 52 and 53. It will be in the bending state located in the upstream rather than.

ここで、L1>L2の関係を満たす区画部材50では、短い方向(折り線51に直交する方向)に対し、長い方向(折り線51に沿う方向)に対するよりも強いテンションが掛かりやすい。そのため、折り線51(内結合部63)に沿う方向に延びる内開口部71は、上記テンションの強弱関係により開かれるおそれがある。   Here, in the partition member 50 satisfying the relationship of L1> L2, a stronger tension is easily applied to the short direction (the direction perpendicular to the fold line 51) than to the long direction (the direction along the fold line 51). Therefore, the inner opening 71 extending in the direction along the fold line 51 (inner coupling portion 63) may be opened due to the strength relationship of the tension.

しかし、両弁体部78,79の少なくとも先端部78T,79Tが互いに接触して閉じた状態となる。これは、区画部材50が平面状に緊張することで内開口部71が引っ張られて、これを開かせようとする力が作用したとしても、その力は、内開口部71において最も大きく、内開口部71から遠ざかるに従い小さくなり、先端部78T,79Tにおいて最小となるからである。その結果、上流側膨張部47内の膨張用ガスGは、内開口部71及び両弁体部78,79間を通って下流側膨張部48へ流出することを規制される。   However, at least the tip end portions 78T and 79T of both valve body portions 78 and 79 are in contact with each other and closed. This is because even if the inner opening 71 is pulled by tensioning the partition member 50 in a planar shape and a force is applied to open the inner opening 71, the force is the largest in the inner opening 71, This is because the distance from the opening 71 decreases as the distance from the opening 71 decreases, and is minimized at the tip portions 78T and 79T. As a result, the expansion gas G in the upstream expansion portion 47 is restricted from flowing out to the downstream expansion portion 48 through the space between the inner opening 71 and the valve body portions 78 and 79.

なお、両弁体部78,79は下流側膨張部48に位置しているため、上流側膨張部47の膨張用ガスGの圧力が両弁体部78,79の両側から加わって、両弁体部78,79が自己シール状態になることは期待できない。   In addition, since both valve body parts 78 and 79 are located in the downstream side expansion part 48, the pressure of the expansion gas G of the upstream side expansion part 47 is applied from both sides of both valve body parts 78 and 79, and both valves It cannot be expected that the body parts 78 and 79 are in a self-sealing state.

両弁体部78,79が少なくとも先端部78T,79Tにおいて閉じられた状態で、上流側膨張部47内に膨張用ガスGが供給され続ける一方、乗員拘束に伴う外力が加わって膨張部46が押圧されて変形すると、区画部材50に掛かるテンションが変化する。また、膨張部46の上記変形に伴い上流側膨張部47の内圧がさらに上昇して、区画部材50の中間部分P1が下流側膨張部48側へ押圧されて、同中間部分P1に掛かるテンションが変化するとともに、区画部材50の上部P2及び下部P3が押圧されて下流側膨張部48側へ膨らむように変形する。すなわち、上部P2及び下部P3は、乗員拘束前の上記屈曲状態(図27参照)から反転したような形状に変形し、中間部分P1においてテンションの変化が容易に発生する。内開口部71の変形や、弁体部78,79の作動が許容される。   While the valve body portions 78 and 79 are closed at least at the tip portions 78T and 79T, the expansion gas G continues to be supplied into the upstream-side expansion portion 47, while an external force is applied to the expansion portion 46 due to the occupant restraint. When pressed and deformed, the tension applied to the partition member 50 changes. Further, the internal pressure of the upstream expansion portion 47 is further increased with the deformation of the expansion portion 46, the intermediate portion P1 of the partition member 50 is pressed toward the downstream expansion portion 48, and the tension applied to the intermediate portion P1 is increased. While changing, the upper part P2 and the lower part P3 of the partition member 50 are pressed and deformed so as to swell toward the downstream side expansion part 48 side. That is, the upper part P2 and the lower part P3 are deformed into a shape that is inverted from the bent state before the occupant restraint (see FIG. 27), and the tension change easily occurs in the intermediate part P1. Deformation of the inner opening 71 and operation of the valve bodies 78 and 79 are allowed.

このような状況のもと、内開口部71が開かれ、かつ両弁体部78,79が開かれた状態になると、上記規制が解除される。この解除により、上流側膨張部47から下流側膨張部48へ膨張用ガスGが流出するようになる。   Under such circumstances, when the inner opening 71 is opened and both valve body portions 78 and 79 are opened, the restriction is released. With this release, the expansion gas G flows out from the upstream expansion portion 47 to the downstream expansion portion 48.

従って、第4実施形態によると、上述した(1),(2)の効果が得られる。ただし、重ね合わせ部61が下流側膨張部48に配置された第4実施形態では、第3実施形態に比べ、重ね合わせ部61にテンションが掛かりにくいため、シール性が若干低くなる。   Therefore, according to the fourth embodiment, the effects (1) and (2) described above can be obtained. However, in the fourth embodiment in which the overlapping portion 61 is disposed in the downstream side expansion portion 48, the tension is not easily applied to the overlapping portion 61 as compared with the third embodiment, so that the sealing performance is slightly lowered.

なお、内結合部63が折り線51に沿う方向に設けられた上記第3及び第4実施形態は、内結合部63が折り線51に略直交する方向に沿って設けられた上記第1及び第2実施形態に比べ、製造コストの点で有利である。これは、第1及び第2実施形態では、内結合部63が折り線51として機能しないのに対し、第3及び第4実施形態では、内結合部63が折り線51として機能することによる。   The third and fourth embodiments in which the inner coupling portion 63 is provided in the direction along the fold line 51 are the first and second embodiments in which the inner coupling portion 63 is provided in a direction substantially orthogonal to the fold line 51. Compared to the second embodiment, it is advantageous in terms of manufacturing cost. This is because the inner coupling portion 63 does not function as the folding line 51 in the first and second embodiments, whereas the inner coupling portion 63 functions as the folding line 51 in the third and fourth embodiments.

具体的には、第1及び第2実施形態では、二つ折り状態の区画部材50を得るために、2つの部材56,57の端縁58E,59E同士を合致させた状態で端部58,59同士を帯状に重ね合わせる。同両部材56,57を、非重ね合わせ部62と重ね合わせ部61との境界部分で結合する作業を行う(内結合部63を設ける)ことにより区画部材50を形成する。その後に、この区画部材50を折り線51に沿って二つ折りする作業が必要となる。しかし、第3及び第4実施形態では、車内側及び車外側の両部材81,82を結合する作業を行う(内結合部63を設ける)ことにより、内結合部63(折り線51)に沿って二つ折りされた状態の区画部材50が形成される。区画部材50を二つ折りする作業が不要となり、その分、サイドエアバッグ装置の作業工数が少なくなり、製造コストを抑えることができる。   Specifically, in the first and second embodiments, in order to obtain the partition member 50 in a folded state, the end portions 58 and 59 are in a state in which the end edges 58E and 59E of the two members 56 and 57 are matched. Overlap each other in a band. The partition member 50 is formed by performing the operation | work which couple | bonds both the members 56 and 57 in the boundary part of the non-overlapping part 62 and the overlapping part 61 (providing the inner coupling part 63). Thereafter, an operation of folding the partition member 50 in half along the fold line 51 is required. However, in the third and fourth embodiments, by performing an operation of connecting both the inner and outer members 81 and 82 (providing the inner connecting portion 63), along the inner connecting portion 63 (fold line 51). Thus, the partition member 50 in a folded state is formed. The operation of folding the partition member 50 in half becomes unnecessary, and accordingly, the work man-hour of the side airbag device is reduced, and the manufacturing cost can be suppressed.

また、エアバッグ40の布部43,44と周縁結合部45に用いられる縫糸とを比べた場合、前者の方が耐熱性に優れる。一方で、インフレータ31からは高温の膨張用ガスGが噴出される。そのため、エアバッグ40は、1枚又は2枚の布片がインフレータ31の近くで縫合されるよりも、1枚の布片がインフレータ31の近くで二つ折りされる(縫合されない)方が、耐熱性の点で好ましい。   Moreover, when the cloth parts 43 and 44 of the airbag 40 and the sewing thread used for the peripheral joint part 45 are compared, the former is superior in heat resistance. On the other hand, high-temperature inflation gas G is ejected from the inflator 31. Therefore, the airbag 40 is more heat resistant when one piece of cloth is folded in two near the inflator 31 (not sewn) than when one or two pieces of cloth are stitched near the inflator 31. From the viewpoint of sex.

しかし、この場合には、第1〜第4実施形態のうち、第1及び第3実施形態の構成を適用することが、製造の点から難しい。これは、エアバッグ40が1枚の布片からなる故に、各結合部を設ける作業の順序が、外結合部54,55→内結合部63→周縁結合部45の順とならざるを得ない。この順序で作業を行う以上、重ね合わせ部61が上流側膨張部47に位置するように、外結合部54,55及び内結合部63を設ける作業を行うことは、非常に難しいからである。結局、重ね合わせ部61が下流側膨張部48に位置する第2及び第4実施形態の構成を採らざるを得なくなる。従って、第2及び第4実施形態の方が、重ね合わせ部61が上流側膨張部47に位置する第1及び第3実施形態に比べ製造のしやすさで優位であるといえる。   However, in this case, it is difficult from the viewpoint of manufacturing to apply the configurations of the first and third embodiments of the first to fourth embodiments. This is because the airbag 40 is made of a single piece of cloth, and the order of the work for providing the respective connecting portions must be in the order of the outer connecting portions 54 and 55 → the inner connecting portion 63 → the peripheral connecting portion 45. . As long as the operations are performed in this order, it is very difficult to perform the operation of providing the outer coupling portions 54 and 55 and the inner coupling portion 63 so that the overlapping portion 61 is positioned in the upstream expansion portion 47. Eventually, the configuration of the second and fourth embodiments in which the overlapping portion 61 is located in the downstream side expansion portion 48 has to be adopted. Therefore, it can be said that the second and fourth embodiments are superior in ease of manufacture compared to the first and third embodiments in which the overlapping portion 61 is located in the upstream expansion portion 47.

なお、本発明は次に示す別の実施形態に具体化することができる。
<第1及び第2実施形態に共通する事項>
・区画部材50における上側の部材56は、折り線51に沿って2枚に分割されてもよい。同様に、下側の部材57は、折り線51に沿って2枚に分割されてもよい。
Note that the present invention can be embodied in another embodiment described below.
<Matters common to the first and second embodiments>
The upper member 56 in the partition member 50 may be divided into two along the fold line 51. Similarly, the lower member 57 may be divided into two along the fold line 51.

・内開口部71及び内結合部63は、区画部材50の折り線51に直交する方向に限らず、斜めに交差する方向に沿って設けられてもよい。
<第3及び第4実施形態に共通する事項>
・帯状の重ね合わせ部61のエアバッグ40との結合態様としては、次の2つが考えられる。
The inner opening 71 and the inner coupling portion 63 are not limited to the direction orthogonal to the fold line 51 of the partition member 50, and may be provided along a direction that intersects obliquely.
<Matters common to the third and fourth embodiments>
-As a coupling | bonding aspect with the airbag 40 of the strip | belt-shaped overlapping part 61, the following two can be considered.

1つは、重ね合わせ部61を非重ね合わせ部側へ折り曲げずに、内結合部63に沿う方向(略上下方向)についての両端部において、周縁結合部45によって両布部43,44に結合するというものである。これは、第3及び第4実施形態で採用した結合態様である。   One is that the overlapping portion 61 is not bent to the non-overlapping portion side, but is connected to both the cloth portions 43 and 44 by the peripheral connecting portion 45 at both ends in the direction along the inner connecting portion 63 (substantially up and down direction). It is to do. This is the coupling mode employed in the third and fourth embodiments.

もう1つは、重ね合わせ部61を非重ね合わせ部側へ折り曲げ、内結合部63に沿う方向(略上下方向)についての重ね合わせ部61の両端部において、非重ね合わせ部と一緒にエアバッグ40の両布部43,44に結合するというものである。これは、第1及び第2実施形態で採用したものに近い結合態様である。このようにすると、区画部材50の非重ね合わせ部だけでなく重ね合わせ部61に対しても、折り線51(内結合部63)に沿う方向のテンションが掛かるため、両弁体部78,79が開きにくくなり、シール性が向上する。   The other is that the overlapping portion 61 is bent toward the non-overlapping portion side, and the airbag is installed together with the non-overlapping portion at both ends of the overlapping portion 61 in the direction along the inner coupling portion 63 (substantially vertical direction). It is to be connected to the 40 cloth parts 43 and 44. This is a coupling mode close to that employed in the first and second embodiments. In this way, since the tension in the direction along the folding line 51 (inner coupling portion 63) is applied not only to the non-overlapping portion of the partition member 50 but also to the overlapping portion 61, both valve body portions 78 and 79 are applied. Is difficult to open, and the sealing performance is improved.

<全ての実施形態に共通する事項>
・各実施形態において、区画部材50の対向端部52は、エアバッグ40の布部43に対し、上流側膨張部47内で結合されてもよいし、下流側膨張部48内で結合されてもよい。同様に、区画部材50の対向端部53は、エアバッグ40の布部44に対し、上流側膨張部47内で結合されてもよいし、下流側膨張部48内で結合されてもよい。
<Matters common to all embodiments>
In each embodiment, the opposed end portion 52 of the partition member 50 may be coupled to the cloth portion 43 of the airbag 40 within the upstream inflatable portion 47 or within the downstream inflatable portion 48. Also good. Similarly, the facing end portion 53 of the partition member 50 may be coupled to the cloth portion 44 of the airbag 40 in the upstream inflating portion 47 or in the downstream inflating portion 48.

また、対向端部52,53の一方が上流側膨張部47内で結合され、他方が下流側膨張部48内で結合されてもよい。
・エアバッグ40は、その略全体が膨張部46からなるものであってもよいが、膨張用ガスGが供給されず膨張することのない非膨張部を一部に有するものであってもよい。
Further, one of the opposed end portions 52 and 53 may be coupled within the upstream expansion portion 47 and the other may be coupled within the downstream expansion portion 48.
The airbag 40 may be substantially entirely composed of the inflating portion 46, but may have a part of a non-inflating portion in which the inflating gas G is not supplied and does not inflate. .

・図30及び図31に示すように、区画部材50として、単一の部材86(布片)からなるものを用いてもよい。この場合には、部材86を折り線85に沿って二つ折りする。二つ折り状態の区画部材50の折り線85から一定距離ずつ離れた箇所に内結合部63を設ける。内結合部63と折り線85とによって挟まれた部分を、帯状の重ね合わせ部61とする。さらに、この重ね合わせ部61の折り線85上において、少なくとも内開口部71に対応する箇所にスリット87を入れる。重ね合わせ部61において、内開口部71及びスリット87間となる部分を、弁体部73,74、78,79とする。   -As shown in FIG.30 and FIG.31, you may use what consists of the single member 86 (cloth piece) as the division member 50. FIG. In this case, the member 86 is folded in two along the fold line 85. An inner coupling portion 63 is provided at a position separated from the folding line 85 of the partition member 50 in a folded state by a certain distance. A portion sandwiched between the inner coupling portion 63 and the fold line 85 is referred to as a band-shaped overlapping portion 61. Further, on the folding line 85 of the overlapping portion 61, a slit 87 is inserted at least at a location corresponding to the inner opening 71. In the overlapping portion 61, portions between the inner opening 71 and the slit 87 are referred to as valve body portions 73, 74, 78, and 79.

・重ね合わせ部61において、両弁体部73,74、78,79として機能するのは、内開口部71の近傍部分である。そのため、上流側膨張部47の膨張時に、両弁体部73,74、78,79の少なくとも先端部が接触して閉じられるのであれば、重ね合わせ部61において、内開口部71に対応しない部分(非近傍部分)の形態を変更してもよい。例えば、重ね合わせ部61において内開口部71に対応しない部分(非近傍部分)については、部分的又は全体的に結合してもよい。この結合の手段としては、縫合であってもよいし、接着であってもよい。このように変更することで、重ね合わせ部61において内開口部71に対応する部分だけ両弁体部73,74、78,79として作動させ、対応しない部分が不要に動く現象、例えばばたつく現象を抑制することができる。   In the overlapping portion 61, it is a portion in the vicinity of the inner opening 71 that functions as both valve body portions 73, 74, 78, and 79. Therefore, when at least the tip ends of both valve body portions 73, 74, 78, and 79 are in contact and closed when the upstream side expansion portion 47 is expanded, the overlapping portion 61 does not correspond to the inner opening portion 71. The form of (non-neighboring part) may be changed. For example, a portion (non-neighboring portion) that does not correspond to the inner opening 71 in the overlapping portion 61 may be partially or entirely combined. As a means for this connection, stitching or adhesion may be used. By changing in this way, only the portion corresponding to the inner opening 71 in the overlapping portion 61 is operated as both valve body portions 73, 74, 78, and 79, and the non-corresponding portion moves unnecessarily, for example, the flapping phenomenon. Can be suppressed.

そのほかにも、重ね合わせ部61において内開口部71に対応しない箇所の少なくとも一部に切欠きを入れてもよい。
・区画部材50と両弁体部73,74、78,79とは、互いに異なる部材によって構成されてもよい。
In addition, at least a part of the overlapping portion 61 that does not correspond to the inner opening 71 may be notched.
The partition member 50 and the valve body portions 73, 74, 78, and 79 may be configured by different members.

・二つ折り状態の区画部材50における折り線51は、上下方向に対し多少傾斜していてもよい。
・上記第1〜第4実施形態では、乗員Pの主として胸部PTを保護するサイドエアバッグ装置を例に説明したが、本発明は、この胸部PTを含め、乗員Pのほかの部位を側突等の衝撃から保護するサイドエアバッグ装置にも適用可能である。以下に、適用例について説明する。なお、図32(A),(B)〜図34(A),(B)の各々は、エアバッグ40の膨張部46における区画部材50等の部材の配置状態を模式的に示したものであり、細部については省略・簡略化されている。なお、図中、網点の付された箇所が区画部材である。
-The fold line 51 in the partition member 50 in a folded state may be slightly inclined with respect to the vertical direction.
In the first to fourth embodiments, the side airbag device that mainly protects the chest part PT of the occupant P has been described as an example. However, the present invention includes a side part of the occupant P including the chest part PT. The present invention is also applicable to a side airbag device that protects against impacts such as the above. Hereinafter, application examples will be described. Each of FIGS. 32A and 32B to FIGS. 34A and 34B schematically shows an arrangement state of members such as the partition member 50 in the inflating portion 46 of the airbag 40. Yes, details are omitted or simplified. In the figure, the halftone dots are partition members.

《乗員Pの胸部PT〜頭部PHにかけての部位を保護するサイドエアバッグ装置》
・このタイプのサイドエアバッグ装置では、図32(A)に示すように、車両に搭載され、かつ膨張した状態で、エアバッグ40の膨張部46が、胸部PT〜頭部PHの側方近傍で膨張し得るよう上下方向に細長いものとなる。このサイドエアバッグ装置に本発明を適用した場合、膨張部46が、調圧弁(図示略)を有し、かつ略上下方向に延びる区画部材50によって、前後2つの部分に区画されてもよい。膨張部46において区画部材50よりも後側が上流側膨張部88とされ、前側が下流側膨張部89とされる。この場合、区画部材50は、鉛直方向に沿って延びることとなるが、この区画部材50の延びる方向は、エアバッグ40に対する要求性能に応じて変更されてもよい。区画部材50は鉛直方向に対し傾斜するものであってもよい。その際、区画部材50の鉛直線になす角度(傾斜角度)は種々変更可能である。
<< Side Airbag Device that Protects Part of Passenger P from Chest PT to Head PH >>
In this type of side airbag device, as shown in FIG. 32 (A), the inflated portion 46 of the airbag 40 is mounted in the vehicle and inflated so that the side portion of the chest PT to the side of the head PH is near the side. It becomes elongated in the vertical direction so that it can expand. When the present invention is applied to this side airbag device, the inflating portion 46 may be partitioned into two front and rear portions by a partition member 50 having a pressure regulating valve (not shown) and extending substantially in the vertical direction. In the inflating portion 46, the rear side of the partition member 50 is an upstream inflating portion 88 and the front side is a downstream inflating portion 89. In this case, the partition member 50 extends along the vertical direction, but the extending direction of the partition member 50 may be changed according to the required performance for the airbag 40. The partition member 50 may be inclined with respect to the vertical direction. At that time, the angle (tilt angle) formed with the vertical line of the partition member 50 can be variously changed.

また、図32(B)に示すように、区画部材は、上記膨張部46の前後方向に互いに離間した2箇所に並設されてもよい。2つの区画部材を区別するために、前側に位置するものを区画部材50Fとし、後側に位置するものを区画部材50Rとする。この場合、膨張部46は、両区画部材50R,50Fによって、後、中央、前の3つの部分に区画される。後側の区画部材50Rを基準とすると、「後」部分が上流側膨張部91となり、「中央」部分が下流側膨張部92となる。また、前側の区画部材50Fを基準とすると、「中央」部分が上流側膨張部93となり、「前」部分が下流側膨張部94となる。インフレータ31から噴出された膨張用ガスは、上流側膨張部91、区画部材50R、下流側膨張部92(上流側膨張部93)、区画部材50F及び下流側膨張部94の順に流れる。なお、図示はしないが、区画部材は、膨張部46の前後方向に互いに離間した3箇所以上の箇所に並設されてもよい。   Further, as shown in FIG. 32B, the partition members may be arranged in parallel at two locations separated from each other in the front-rear direction of the inflating portion 46. In order to distinguish the two partition members, the one located on the front side is defined as a partition member 50F, and the one located on the rear side is defined as a partition member 50R. In this case, the expansion part 46 is divided into three parts, rear, center, and front, by both partition members 50R and 50F. When the rear partition member 50R is used as a reference, the “rear” portion becomes the upstream expansion portion 91 and the “center” portion becomes the downstream expansion portion 92. When the front partition member 50 </ b> F is used as a reference, the “center” portion becomes the upstream expansion portion 93 and the “front” portion becomes the downstream expansion portion 94. The expansion gas ejected from the inflator 31 flows in the order of the upstream expansion portion 91, the partition member 50R, the downstream expansion portion 92 (upstream expansion portion 93), the partition member 50F, and the downstream expansion portion 94. Although not shown, the partition members may be arranged in parallel at three or more locations separated from each other in the front-rear direction of the inflating portion 46.

《乗員Pの腰部PP〜胸部PT(肩部PS)にかけての部位を保護するサイドエアバッグ装置》
・このタイプのサイドエアバッグ装置では、図33(A)に示すように、車両に搭載され、かつ膨張した状態で、エアバッグ40の膨張部46が、腰部PP〜胸部PT(肩部PS)の側方近傍で膨張し得るよう上下方向に細長いものとなる。膨張部46は、仕切り部95及び逆止弁96によって上下2つの部位に区画されている。仕切り部95は、エアバッグ40の両布部43,44間に布片を架設してなるテザーによって構成されてもよいし、両布部43,44を互いに接触させた状態で縫合(結合)してなるシームによって構成されてもよい。
<< Side Airbag Device that Protects Part of Crew P from Lumbar PP to Chest PT (Shoulder PS) >>
In this type of side airbag device, as shown in FIG. 33 (A), the inflated portion 46 of the airbag 40 is mounted on the vehicle and inflated so that the inflated portion 46 of the waist portion PP to the chest portion PT (shoulder portion PS). It is elongated in the vertical direction so as to be able to expand in the vicinity of the side. The expansion portion 46 is divided into two upper and lower portions by a partition portion 95 and a check valve 96. The partition part 95 may be configured by a tether in which a cloth piece is installed between the cloth parts 43 and 44 of the airbag 40, or is sewn (coupled) in a state where the cloth parts 43 and 44 are in contact with each other. It may be configured by a seam.

インフレータ31は、仕切り部95よりも上側の部位に配置される。逆止弁96は、インフレータ31から噴出される膨張用ガスが、仕切り部95よりも上側の部位から下側の部位に流れるのを許容し、その逆方向に流れるのを規制する。仕切り部95よりも上側の部位は、例えば胸部PT及び肩部PSの側方で膨張し、仕切り部95よりも下側の部位は、例えば腰部PPの側方で膨張する。   The inflator 31 is disposed at a site above the partition part 95. The check valve 96 allows the inflation gas ejected from the inflator 31 to flow from the upper part to the lower part of the partition part 95 and restricts the flow in the opposite direction. The part above the partition part 95 expands, for example, on the side of the chest part PT and the shoulder part PS, and the part below the partition part 95 expands, for example, on the side part of the waist part PP.

このサイドエアバッグ装置に本発明を適用した場合、同図33(A)に示すように、上側の部位が、略上下方向に延び、かつ調圧弁(図示略)を有する区画部材50Uによって、さらに前後2つに区画されてもよい。また、下側の部位が、略上下方向に延び、かつ調圧弁(図示略)を有する区画部材50Lによって、さらに前後2つに区画されてもよい。この場合、仕切り部95よりも上側の部位では、区画部材50Uよりも後側の部分が上流側膨張部97とされ、前側の部分が下流側膨張部98とされる。また、仕切り部95よりも下側の部位では、区画部材50Lよりも後側の部分が上流側膨張部99とされ、前側の部分が下流側膨張部100とされる。   When the present invention is applied to this side airbag device, as shown in FIG. 33 (A), the upper portion extends substantially in the vertical direction and is further divided by a partition member 50U having a pressure regulating valve (not shown). You may divide into two front and back. Further, the lower part may be further divided into two front and rear parts by a partition member 50L that extends substantially in the vertical direction and has a pressure regulating valve (not shown). In this case, in the region above the partition portion 95, the rear portion of the partition member 50U is the upstream expansion portion 97, and the front portion is the downstream expansion portion 98. Further, in a portion below the partition portion 95, a portion on the rear side of the partition member 50L is an upstream inflatable portion 99, and a front portion is a downstream inflatable portion 100.

なお、図示はしないが、区画部材50U,50Lは、仕切り部95よりも上側の部位のみに設けられてもよいし、下側の部位のみに設けられてもよい。
上記図33(A)の変形例として、図33(B)に示すように、仕切り部95よりも上側の部位が、略上下方向に延びる区画部材50Uに代えて、略前後方向に延びる区画部材50Hによって上下2つに区画されてもよい。この場合、区画部材50Hよりも下側の部分が、胸部PTを保護する上流側膨張部101とされ、上側の部分が肩部PSを保護する下流側膨張部102とされる。
In addition, although not illustrated, the partition members 50U and 50L may be provided only in the upper part of the partition part 95, or may be provided only in the lower part.
As a modification of FIG. 33 (A), as shown in FIG. 33 (B), instead of the partition member 50U extending substantially in the vertical direction, the partition member extending above the partition portion 95 extends substantially in the front-rear direction. It may be divided into two upper and lower parts by 50H. In this case, the part below the partition member 50H is the upstream inflatable part 101 that protects the chest PT, and the upper part is the downstream inflatable part 102 that protects the shoulder PS.

なお、図示はしないが、仕切り部95よりも下側の部位が、略上下方向に延びる区画部材50Lに代えて、略前後方向に延びる区画部材によって上下2つに区画されてもよい。この場合、区画部材よりも上側の部分が、腰部PPの上半部を保護する上流側膨張部とされ、下側の部分が腰部PPの下半部を保護する下流側膨張部とされる。   Although not shown in the drawing, the portion below the partition portion 95 may be divided into two upper and lower portions by a partition member extending in the substantially front-rear direction instead of the partition member 50L extending in the substantially vertical direction. In this case, the upper part of the partition member is an upstream expansion part that protects the upper half of the waist PP, and the lower part is a downstream expansion part that protects the lower half of the waist PP.

・図34(A)に示すように、膨張部46は、インフレータ31の前方で、同インフレータ31に沿って略上下方向に延びる仕切り部103によって、大きく前後2つに区画されてもよい。仕切り部103は、上述した仕切り部95と同様、エアバッグ40の両布部43,44間に布片を架設してなるテザーによって構成されてもよいし、両布部43,44を互いに接触させた状態で縫合(結合)してなるシームによって構成されてもよい。   As shown in FIG. 34 (A), the inflating portion 46 may be largely divided into two front and rear portions by a partition portion 103 that extends substantially in the vertical direction along the inflator 31 in front of the inflator 31. Similarly to the partition part 95 described above, the partition part 103 may be configured by a tether in which a piece of cloth is laid between the cloth parts 43 and 44 of the airbag 40, or the cloth parts 43 and 44 are in contact with each other. You may be comprised by the seam formed by stitching | suture (joining) in the made state.

仕切り部103よりも後側の部位は、インフレータ31が収容されるインフレータ収容部104とされる。仕切り部103よりも前側の部位は、乗員Pの肩部PS〜腰部PPにかけての部位を保護する保護部105とされる。保護部105は、調圧弁(図示略)を有し、かつそれぞれ略前後方向に延びる上下一対の区画部材50U,50Lによって上、中央、下の3つの部分に区画されてもよい。この場合、上側の区画部材50Uを基準とすると、「上」部分が上流側膨張部106となり、「中央」部分が下流側膨張部107となる。また、下側の区画部材50Lを基準とすると、「下」部分が上流側膨張部108となり、「中央」部分が下流側膨張部107となる。   A part on the rear side of the partition 103 is an inflator accommodating portion 104 in which the inflator 31 is accommodated. The part on the front side of the partition part 103 is a protective part 105 that protects the part from the shoulder part PS to the waist part PP of the occupant P. The protection unit 105 includes a pressure regulating valve (not shown), and may be partitioned into three parts, an upper part, a center part, and a lower part, by a pair of upper and lower partition members 50U and 50L that extend substantially in the front-rear direction. In this case, when the upper partition member 50U is used as a reference, the “upper” portion becomes the upstream expansion portion 106 and the “center” portion becomes the downstream expansion portion 107. When the lower partition member 50L is used as a reference, the “lower” portion becomes the upstream expansion portion 108 and the “center” portion becomes the downstream expansion portion 107.

インフレータ31から噴出される膨張用ガスは、インフレータ収容部104、上流側膨張部106及び区画部材50Uを順に経て下流側膨張部107に供給されるとともに、インフレータ収容部104、上流側膨張部108及び区画部材50Lを順に経て下流側膨張部107に供給される。このように、膨張用ガスは2つのルートを通って下流側膨張部107に供給される。   The inflating gas ejected from the inflator 31 is supplied to the downstream inflating portion 107 through the inflator accommodating portion 104, the upstream inflating portion 106, and the partition member 50U in order, and the inflator accommodating portion 104, the upstream inflating portion 108, and the like. It is supplied to the downstream inflating part 107 through the partition member 50L in order. In this way, the expansion gas is supplied to the downstream expansion portion 107 through two routes.

なお、図示はしないが、仕切り部103が設けられることなく、膨張部46は、調圧弁(図示略)を有し、かつ略前後方向に延びる1つの区画部材によって、上下2つの部分に区画されてもよい。下側の部分は、インフレータ31からの膨張用ガスが最初に供給されて腰部PPを保護する上流側膨張部とされ、上側の部分は、上流側膨張部を経た膨張用ガスが供給されて、胸部PT(肩部PS)を保護する下流側膨張部とされてもよい。   Although not shown, the partition part 103 is not provided, and the expansion part 46 has a pressure regulating valve (not shown) and is partitioned into two upper and lower parts by one partition member extending substantially in the front-rear direction. May be. The lower part is an upstream side expansion part that first supplies the inflation gas from the inflator 31 to protect the waist PP, and the upper part is supplied with the expansion gas that has passed through the upstream side expansion part, It may be a downstream expansion part that protects the chest part PT (shoulder part PS).

・区画部材50の形状は、直線状をなすものに限らず、非直線状をなすものであってもよい。調圧弁(図示略)を有する区画部材50は、例えば図34(B)に示すように、L字形状(くの字形状)をなすものであってもよい。この場合、膨張部46は区画部材50によって略上下方向に3つの部分に区画されてもよい。区画部材50の斜め後ろ上方の部分が上流側膨張部111とされ、同区画部材50の斜め後ろ下方の部分が上流側膨張部112とされ、区画部材50によって挟まれた部分が下流側膨張部113とされる。   The shape of the partition member 50 is not limited to a linear shape, and may be a non-linear shape. For example, as shown in FIG. 34B, the partition member 50 having a pressure regulating valve (not shown) may have an L shape (shape). In this case, the inflating portion 46 may be partitioned into three parts in the substantially vertical direction by the partition member 50. The upper part of the partition member 50 is defined as the upstream expansion part 111, the lower part of the partition member 50 is defined as the upstream expansion part 112, and the part sandwiched by the partition members 50 is the downstream expansion part. 113.

そのほか、図示はしないが、区画部材50は半円形状をなすものであってもよい。
なお、上記変更についての思想は、胸部PTのみを保護するサイドエアバッグ装置、胸部PT〜頭部PHを保護するサイドエアバッグ装置、腰部PP〜胸部PT(肩部PS)を保護するサイドエアバッグ装置、腰部PP〜頭部PHを保護するサイドエアバッグ装置の各エアバッグに適宜転用可能である。
In addition, although not shown, the partition member 50 may have a semicircular shape.
In addition, the idea about the said change is the side airbag device which protects only chest PT, the side airbag device which protects chest PT-head PH, and the side airbag which protects waist PP-chest PT (shoulder PS). The device can be appropriately converted to each airbag of the side airbag device that protects the waist PP to the head PH.

・本発明は、サイドエアバッグ装置とは異なる種類のエアバッグ装置にも適用可能である。
その一例として、図35及び図36に示す膝保護用エアバッグ装置120がある。図35に示すように、膝保護用エアバッグ装置120は、車両用シート(図示略)に着座した乗員Pの下肢の前下方で膨張することにより、同乗員Pの脛部PDから膝部PKにかけての部位を保護するものである。膝保護用エアバッグ装置120は、例えばステアリングコラム121の下方に設けられた収納部122に収納されている。なお、この収納部122は、インストルメントパネルにおいて助手席の乗員の前下方に設けられてもよい。
-This invention is applicable also to the airbag apparatus of a kind different from a side airbag apparatus.
As an example, there is a knee protection airbag device 120 shown in FIGS. 35 and 36. As shown in FIG. 35, the knee protection airbag device 120 is inflated in front of and below the lower limbs of the occupant P seated on a vehicle seat (not shown), so that the knee portion PK extends from the shin PD of the occupant P. It protects the part over. The knee protection airbag device 120 is stored in a storage portion 122 provided below the steering column 121, for example. In addition, this accommodating part 122 may be provided in the front lower direction of the passenger | crew of a passenger seat in an instrument panel.

前突等により、車両に前方から衝撃が加わったことが検知されると、膝保護用エアバッグ装置120のエアバッグ123は膨張用ガスにより膨張を開始し、収納部122から後方側へ出て、乗員Pとステアリングコラム121との間において、乗員Pの両足の脛部PDから膝部PKにかけての領域で膨張展開する。   When it is detected that an impact is applied to the vehicle from the front due to a front collision or the like, the airbag 123 of the knee protection airbag device 120 starts to inflate with the inflation gas and exits from the storage portion 122 to the rear side. In between the occupant P and the steering column 121, the occupant P inflates and expands in a region from the shin PD of the occupant P to the knee PK.

この別例の場合、図36に示すように、膝保護用エアバッグ装置120のエアバッグ123は、前後一対の布部123Aを、その周縁部に設けた周縁結合部124で袋状に結合することによって形成されている。エアバッグ123の膨張部125は、インフレータアセンブリ30が収容されるインフレータ収容部126と、膝部PKを保護する上流側膨張部127と、インフレータ収容部126内の膨張用ガスGを上流側膨張部127へ導く一対のガス通路部128と、上流側膨張部127の下流側に位置する下流側膨張部129とを備えている。インフレータ収容部126は、膨張部125の下部に形成され、上流側膨張部127は膨張部125の上部に形成されている。下流側膨張部129は、上流側膨張部127及びインフレータ収容部126間に形成されている。両ガス通路部128は、車幅方向(図36の左右方向)についての下流側膨張部129の両側に形成されている。インフレータ収容部126及び両ガス通路部128と、下流側膨張部129とは、それらの間に正面略U字状に設けられた仕切り部131によって仕切られている。仕切り部131は、上述した仕切り部95,103と同様、エアバッグ123の前後両布部123A間に布片を架設してなるテザーによって構成されてもよいし、前後両布部123Aを互いに接触させた状態で縫合(結合)してなるシームによって構成されてもよい。   In the case of this other example, as shown in FIG. 36, the airbag 123 of the knee protection airbag device 120 has a pair of front and rear cloth parts 123A joined in a bag shape by a peripheral joint part 124 provided at the peripheral part. It is formed by. The inflating portion 125 of the airbag 123 includes an inflator housing portion 126 in which the inflator assembly 30 is housed, an upstream inflating portion 127 that protects the knee portion PK, and an inflating gas G in the inflator housing portion 126 as an upstream inflating portion. A pair of gas passage portions 128 leading to 127 and a downstream side expansion portion 129 located on the downstream side of the upstream side expansion portion 127 are provided. The inflator accommodating portion 126 is formed at the lower portion of the inflating portion 125, and the upstream inflating portion 127 is formed at the upper portion of the inflating portion 125. The downstream expansion portion 129 is formed between the upstream expansion portion 127 and the inflator accommodating portion 126. Both gas passage portions 128 are formed on both sides of the downstream side expansion portion 129 in the vehicle width direction (left-right direction in FIG. 36). The inflator accommodating portion 126 and both gas passage portions 128 and the downstream side expansion portion 129 are partitioned by a partition portion 131 provided between them in a substantially U-shape on the front surface. The partition part 131 may be configured by a tether in which a piece of cloth is provided between the front and rear cloth parts 123A of the airbag 123, as in the case of the partition parts 95 and 103 described above, or the front and rear cloth parts 123A are in contact with each other. You may be comprised by the seam formed by stitching | suture (joining) in the made state.

上流側膨張部127及び下流側膨張部129間には、二つ折り状態の区画部材50が設けられている。区画部材50は、折り線51を対向端部52,53よりも上流側(図36の上側)に位置させた状態で非膨張展開状態の膨張部125に配設されている。両対向端部52,53は、外結合部54,55によって対応する布部123Aに結合されている。区画部材50の折り線51に沿う方向の両端部(図36の左右両端部)は、上記仕切り部131の一部(上端部)によって両布部123Aに結合されている。   Between the upstream inflatable portion 127 and the downstream inflatable portion 129, a partition member 50 in a folded state is provided. The partition member 50 is disposed in the inflatable portion 125 in a non-inflated and deployed state with the fold line 51 positioned on the upstream side (the upper side in FIG. 36) of the opposed end portions 52 and 53. Both opposing end portions 52 and 53 are coupled to the corresponding fabric portion 123 </ b> A by outer coupling portions 54 and 55. Both end portions (left and right end portions in FIG. 36) of the partition member 50 in the direction along the fold line 51 are coupled to both cloth portions 123A by a part (upper end portion) of the partition portion 131.

区画部材50は、第1及び第2実施形態と同様、折り線51に沿う方向である車幅方向に並べられた2つの部材56,57からなる。両部材56,57は、折り線51に略直交する方向へ延びる内結合部63によって結合されている。折り線51を跨ぐ部分では、両部材56,57を結合させる内結合部63が設けられていない。このように内結合部63が設けられていない部分である、結合を解除された箇所は、上流側膨張部127と下流側膨張部129とを連通させるスリット状の内開口部71を構成している。   As in the first and second embodiments, the partition member 50 includes two members 56 and 57 arranged in the vehicle width direction that is a direction along the fold line 51. Both members 56 and 57 are coupled by an inner coupling portion 63 that extends in a direction substantially orthogonal to the fold line 51. In the portion straddling the fold line 51, the inner coupling portion 63 that couples both the members 56 and 57 is not provided. In this way, the portion where the inner coupling portion 63 is not provided, where the coupling is released, constitutes a slit-shaped inner opening 71 that allows the upstream expansion portion 127 and the downstream expansion portion 129 to communicate with each other. Yes.

膝保護用エアバッグ装置120をこのような構成にすることにより、インフレータ31から噴出される膨張用ガスGは、両ガス通路部128を通って上流側膨張部127に供給される。この膨張用ガスGにより、上流側膨張部127が膨張を開始する。乗員拘束に伴い加わる外力によって上流側膨張部127が押圧されて変形して内圧が上昇して調圧弁70が開弁し、上流側膨張部127内の膨張用ガスGが下流側膨張部129に供給される。上流側膨張部127に遅れて下流側膨張部129が膨張する。その結果、乗員Pの下肢のうち、耐衝撃性の比較的高い膝部PKを、内圧が早く上昇する上流側膨張部127によって早期に拘束・保護し、耐衝撃性の比較的低い脛部PDを、上流側膨張部127よりも遅れて内圧が上昇する下流側膨張部129によってソフトに拘束・保護することができる。   By configuring the knee protection airbag device 120 in such a configuration, the inflation gas G ejected from the inflator 31 is supplied to the upstream inflation portion 127 through the gas passage portions 128. Due to the expansion gas G, the upstream side expansion portion 127 starts to expand. The upstream expansion portion 127 is pressed and deformed by an external force applied in accordance with the occupant restraint, the internal pressure rises and the pressure regulating valve 70 is opened, and the expansion gas G in the upstream expansion portion 127 enters the downstream expansion portion 129. Supplied. The downstream expansion portion 129 expands behind the upstream expansion portion 127. As a result, among the lower limbs of the occupant P, the knee part PK having a relatively high impact resistance is restrained and protected early by the upstream inflating part 127 in which the internal pressure rises quickly, and the shin part PD having a relatively low impact resistance. Can be softly restrained and protected by the downstream expansion portion 129 whose internal pressure increases later than the upstream expansion portion 127.

・全ての実施形態において、インフレータアセンブリ30をエアバッグ40の外部に設けてもよい。この場合には、インフレータ31と上流側膨張部47,88,91,93,97,99,101,106,108,111,112,127とを管によって繋ぎ、この管を介してインフレータ31からの膨張用ガスGを供給するようにしてもよい。   In all the embodiments, the inflator assembly 30 may be provided outside the airbag 40. In this case, the inflator 31 and the upstream side inflatable portions 47, 88, 91, 93, 97, 99, 101, 106, 108, 111, 112, 127 are connected by a pipe, and the inflator 31 is connected to the inflator 31 via this pipe. You may make it supply the gas G for expansion | swelling.

・全ての実施形態において、車両用シート12のシートバック14に代えて、ボディサイド部11に収納部18を設け、ここにエアバッグモジュールAMを配設してもよい。   In all the embodiments, instead of the seat back 14 of the vehicle seat 12, the storage part 18 may be provided in the body side part 11, and the airbag module AM may be provided here.

40,123…エアバッグ、42,51,85…折り線、46,125…膨張部、47,88,91,93,97,99,101,106,108,111,112,127…上流側膨張部、48,89,92,94,98,100,102,107,113,129…下流側膨張部、50,50F,50H,50L,50R,50U…区画部材、52,53…対向端部、56,57,81,82,86…部材、58,59,83,84…端部、58E,59E,83E,84E…端縁、61…重ね合わせ部、62…非重ね合わせ部、70…調圧弁、71…内開口部、73,74,78,79…弁体部、120…膝保護用エアバッグ装置、G…膨張用ガス、L1,L2…長さ、P…乗員。   40, 123 ... airbag, 42, 51, 85 ... fold line, 46, 125 ... inflatable part, 47, 88, 91, 93, 97, 99, 101, 106, 108, 111, 112, 127 ... inflated on the upstream side Part, 48, 89, 92, 94, 98, 100, 102, 107, 113, 129 ... downstream expansion part, 50, 50F, 50H, 50L, 50R, 50U ... partition member, 52, 53 ... opposing end part, 56, 57, 81, 82, 86 ... member, 58, 59, 83, 84 ... end, 58E, 59E, 83E, 84E ... end edge, 61 ... overlapping portion, 62 ... non-overlapping portion, 70 ... tone Pressure valve, 71 ... inner opening, 73, 74, 78, 79 ... valve body part, 120 ... knee protection airbag device, G ... inflation gas, L1, L2 ... length, P ... passenger.

Claims (5)

膨張用ガスにより膨張するエアバッグの膨張部を区画部材により少なくとも上流側膨張部及び下流側膨張部に区画し、前記膨張部への前記膨張用ガスの供給期間の初期には閉弁して前記上流側膨張部から前記下流側膨張部への前記膨張用ガスの流通を規制し、同供給期間の途中から開弁して前記規制を解除する調圧弁を設けたエアバッグ装置であって、
前記区画部材は、折り線に沿って折り返されることにより、相対向する対向端部を接近させてなる二つ折り状態にされ、
前記二つ折り状態の区画部材は、前記折り線を前記対向端部よりも上流側に位置させた状態で非膨張展開状態の前記膨張部に配設され、さらに、前記両対向端部と、前記折り線に沿う方向の両端部とにおいて前記エアバッグに結合されており、
前記調圧弁は、
前記区画部材に形成されたスリット状の内開口部と、
前記内開口部の周りに設けられて互いに接近及び離間する一対の弁体部と
を備えることを特徴とするエアバッグ装置。
An inflatable portion of the airbag that is inflated by the inflating gas is partitioned into at least an upstream inflating portion and a downstream inflating portion by a partition member, and is closed at the initial stage of the supply of the inflating gas to the inflating portion An airbag device provided with a pressure regulating valve that regulates the flow of the inflation gas from the upstream inflation portion to the downstream inflation portion and opens the valve from the middle of the supply period to release the regulation,
The partition member is folded along a fold line to be in a double-folded state in which opposed opposing ends are brought close to each other,
The half-folded partition member is disposed in the inflated portion in a non-inflated and deployed state with the fold line positioned on the upstream side of the opposed end, and further, the opposed ends, and It is coupled to the airbag at both ends in the direction along the fold line,
The pressure regulating valve is
A slit-shaped inner opening formed in the partition member;
An airbag device comprising a pair of valve body portions provided around the inner opening and approaching and separating from each other.
前記調圧弁は、前記膨張用ガスの前記供給期間の途中からは、前記エアバッグによる乗員拘束に伴い加わる外力により開弁するものである請求項1に記載のエアバッグ装置。 2. The airbag device according to claim 1, wherein the pressure regulating valve is opened by an external force applied along with occupant restraint by the airbag from the middle of the supply period of the inflation gas. 前記区画部材は、2つの部材の端縁同士を合致させた状態で端部同士を帯状に重ね合わせ、さらに同両部材を、非重ね合わせ部と重ね合わせ部との境界部分で結合することにより形成され、
前記内開口部は、前記両部材の結合部分の一部について結合を解除させることにより形成され、
前記重ね合わせ部において前記内開口部に対応する箇所が前記両弁体部とされる請求項1又は2に記載のエアバッグ装置。
The partition member is formed by overlapping the ends of the two members in a state of matching the edges of the two members, and further joining the members at the boundary portion between the non-overlapping portion and the overlapping portion. Formed,
The inner opening is formed by releasing the coupling for a part of the coupling part of the two members,
The airbag device according to claim 1 or 2, wherein a portion corresponding to the inner opening in the overlapping portion is the both valve body portions.
前記区画部材は、平面状態となったとき、前記折り線に沿う方向の長さが、同折り線に直交する方向の長さよりも長くなるように形成されており、
前記内開口部は、前記折り線に交差する方向に沿って設けられている請求項1〜3のいずれか1つに記載のエアバッグ装置。
When the partition member is in a planar state, the length in the direction along the fold line is formed to be longer than the length in the direction perpendicular to the fold line,
The airbag device according to any one of claims 1 to 3, wherein the inner opening is provided along a direction intersecting the fold line.
前記両弁体部は、前記膨張部の膨張前には前記上流側膨張部に配置されている請求項1〜4のいずれか1つに記載のエアバッグ装置。 The airbag device according to any one of claims 1 to 4, wherein the valve body portions are arranged in the upstream-side inflating portion before the inflating portion is inflated.
JP2010169543A 2010-07-28 2010-07-28 Airbag device Active JP5327158B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2010169543A JP5327158B2 (en) 2010-07-28 2010-07-28 Airbag device
EP11175182.2A EP2412585B1 (en) 2010-07-28 2011-07-25 Airbag apparatus
US13/190,604 US8608198B2 (en) 2010-07-28 2011-07-26 Airbag apparatus
CN201110210767.3A CN102371961B (en) 2010-07-28 2011-07-26 Airbag apparatus
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US14/013,321 US8820785B2 (en) 2010-07-28 2013-08-29 Airbag apparatus
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JP2013184647A (en) * 2012-03-09 2013-09-19 Toyoda Gosei Co Ltd Side airbag device
US8740246B2 (en) 2012-06-22 2014-06-03 Toyoda Gosei Co., Ltd. Airbag apparatus
JP2014037156A (en) * 2012-08-10 2014-02-27 Toyota Motor Corp Side airbag device for vehicle
JP2014065417A (en) * 2012-09-26 2014-04-17 Toyoda Gosei Co Ltd Side airbag system
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JP2014104965A (en) * 2012-11-30 2014-06-09 Toyoda Gosei Co Ltd Side air bag device
JP5980956B2 (en) * 2012-12-20 2016-08-31 オートリブ ディベロップメント エービー Airbag device
WO2014098027A1 (en) * 2012-12-20 2014-06-26 オートリブ ディベロップメント エービー Airbag device
WO2014123055A1 (en) * 2013-02-07 2014-08-14 オートリブ ディベロップメント エービー Vehicular side airbag device
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JP2016124303A (en) * 2014-12-26 2016-07-11 豊田合成株式会社 Side airbag device

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