JP7551404B2 - Airbag device - Google Patents

Airbag device Download PDF

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Publication number
JP7551404B2
JP7551404B2 JP2020145955A JP2020145955A JP7551404B2 JP 7551404 B2 JP7551404 B2 JP 7551404B2 JP 2020145955 A JP2020145955 A JP 2020145955A JP 2020145955 A JP2020145955 A JP 2020145955A JP 7551404 B2 JP7551404 B2 JP 7551404B2
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inflator
retaining member
holding member
deployed
inflated
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JP2021066425A (en
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優斗 小林
努 桜井
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Autoliv Development AB
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Autoliv Development AB
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Priority to EP20202155.6A priority Critical patent/EP3808610B1/en
Priority to KR1020200134029A priority patent/KR102473425B1/en
Priority to US17/072,356 priority patent/US11549375B2/en
Priority to CN202011111548.5A priority patent/CN112677921B/en
Publication of JP2021066425A publication Critical patent/JP2021066425A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/207—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Bags (AREA)

Description

本発明はエアバッグ装置に関する。 The present invention relates to an airbag device.

近年、エアバッグ装置が広く普及している。エアバッグ装置は、車両衝突などの緊急時に作動する安全装置であって、ガス圧でエアバッグが膨張展開して乗員を受け止めて保護する。 Airbag devices have become widespread in recent years. Airbag devices are safety devices that are activated in emergencies such as vehicle collisions, and the airbag inflates and deploys using gas pressure to catch and protect the occupant.

特許文献１には、エアバッグがフレキシブルなカバー内に収納された状態で車両座席の側部内に装着され、車両衝突時には、前記エアバッグが前記カバーを破って該車両座席の前面側に膨張展開する車両座席ユニットが開示されている。 Patent document 1 discloses a vehicle seat unit in which an airbag is stored in a flexible cover and attached to the side of a vehicle seat, and in the event of a vehicle collision, the airbag breaks through the cover and inflates and deploys on the front side of the vehicle seat.

米国特許出願公開第２０１２／０１７５９２４号明細書US Patent Application Publication No. 2012/0175924

一方、エアバッグ装置には、用途に応じて様々な種類があり、例えば、異なる方向に膨張展開する複数部分を有するクッション（エアバッグ）を備えるものがある。このようなエアバッグ装置の場合、膨張展開の際に各部分が絡み合う問題が生じないよう、夫々の部分を別々に畳んだ状態で車両座席の内部に収納する必要がある。しかし、夫々の部分が畳まれた状態を維持せず、又は、夫々の部分の配置が保たれないときは、やはり膨張展開時に各部分が絡み合う問題が生じ得る。 Meanwhile, there are various types of airbag devices depending on the application. For example, some are equipped with a cushion (airbag) that has multiple parts that inflate and deploy in different directions. In the case of such airbag devices, each part needs to be stored inside the vehicle seat in a folded state separately to prevent the parts from becoming entangled when the airbag device inflates and deploys. However, if the parts do not remain folded or the arrangement of the parts is not maintained, the parts may still become entangled when the airbag device inflates and deploys.

しかし、特許文献１の車両座席ユニットにおいては、クッションが異なる方向に膨張展開する複数部分を有する場合が考慮されておらず、複数部分に対して、膨張展開時までに、畳まれた状態を維持し、且つその配置を保存することはできない。 However, the vehicle seat unit in Patent Document 1 does not take into consideration the case where the cushion has multiple sections that inflate and deploy in different directions, and it is not possible for the multiple sections to remain folded and retain their position until they are inflated and deployed.

本発明は、斯かる事情に鑑みてなされたものであり、その目的とするところは、クッションが複数回曲げられてなる造形部が複数形成された状態で装着されるエアバッグ装置において、膨張展開の妨げになることなく、各造形部の形を保持でき、且つ各造形部の配置を保存できるエアバッグ装置を提供することにある。 The present invention was made in consideration of the above circumstances, and its purpose is to provide an airbag device in which the cushion is bent multiple times to form multiple shaped parts, and which is capable of retaining the shape of each shaped part and preserving the arrangement of each shaped part without interfering with inflation and deployment.

本発明に係るエアバッグ装置は、シート状のエアバッグの膨張展開時に水平方向の長手方向で対向する両端部が夫々複数回曲げられてなる造形部が形成された状態で、車両の座席の一側部に装着されるエアバッグ装置において、前記両端部のうち一端部の第１造形部を少なくとも膨張展開の開始時点まで保持する第１保持部材と、他端部の第２造形部を少なくとも膨張展開の開始時点まで保持する第２保持部材とを備えることを特徴とする。 The airbag device according to the present invention is an airbag device that is mounted on one side of a vehicle seat with both ends of the sheet-like airbag that face each other in the horizontal longitudinal direction being bent multiple times to form a shaped portion when the airbag is inflated and deployed, and is characterized by having a first retaining member that retains the first shaped portion at one end of the both ends at least until the start of inflation and deployment, and a second retaining member that retains the second shaped portion at the other end at least until the start of inflation and deployment.

本発明によれば、クッションが複数回曲げられてなる造形部が複数形成された状態で装着されるエアバッグ装置において、膨張展開の妨げになることなく、各造形部の形を保持でき、且つ各造形部の配置を保存できるエアバッグ装置を提供することにある。 The present invention provides an airbag device in which the cushion is bent multiple times to form multiple shaped parts, and which is capable of retaining the shape of each shaped part and preserving the arrangement of each shaped part without interfering with inflation and deployment.

実施の形態１に係るエアバッグ装置を備える車両の内部を略示する部分的斜視図である。1 is a partial perspective view illustrating the interior of a vehicle equipped with an airbag device according to a first embodiment. 実施の形態１に係るエアバッグ装置を備える車両の内部を略示する平面図である。1 is a plan view illustrating the interior of a vehicle equipped with an airbag device according to a first embodiment of the present invention; 図１のＩＩＩ－ＩＩＩ線によるエアバッグ装置の断面図である。3 is a cross-sectional view of the airbag device taken along line III-III in FIG. 1. 実施の形態１に係るクッションの一例を示す斜視図である。FIG. 2 is a perspective view showing an example of a cushion according to the first embodiment. 実施の形態１に係るクッションの折り畳み方法を示す説明図である。5A to 5C are explanatory diagrams showing a method of folding the cushion according to the first embodiment. 実施の形態１に係るクッションの折り畳み方法を示す説明図である。5A to 5C are explanatory diagrams showing a method of folding the cushion according to the first embodiment. 図６Ｅの状態のクッションを模式的に表す斜視図である。FIG. 6C is a perspective view showing the cushion in the state shown in FIG. 6E. 図７のＶＩＩＩ－ＶＩＩＩ線による横断面図である。8 is a cross-sectional view taken along line VIII-VIII in FIG. 7. 実施の形態１に係るクッションの膨張展開過程を示す説明図である。5A to 5C are explanatory diagrams showing the process of inflating and deploying the cushion according to the first embodiment. 実施の形態２に係るエアバッグ装置のクッションの収納状態を模式的に表す横断面図である。FIG. 11 is a cross-sectional view that illustrates a schematic representation of a stored state of a cushion of an airbag device according to a second embodiment. 実施の形態３に係るエアバッグ装置のクッションの収納状態を模式的に表す横断面図である。FIG. 11 is a cross-sectional view that illustrates a schematic representation of a stored state of a cushion of an airbag device according to a third embodiment. 実施の形態４に係るエアバッグ装置のクッションの収納状態を模式的に表す横断面図である。FIG. 13 is a cross-sectional view that illustrates a schematic representation of a stored state of a cushion of an airbag device according to a fourth embodiment. 実施の形態５に係るエアバッグ装置のクッションの収納状態を模式的に表す横断面図である。FIG. 13 is a cross-sectional view that illustrates a schematic representation of a stored state of a cushion of an airbag device according to a fifth embodiment.

以下に、本発明の実施の形態に係るエアバッグ装置について、図面に基づいて詳述する。本発明の実施の形態に係るエアバッグ装置は、車両のシートに装着される。 The airbag device according to the embodiment of the present invention will be described in detail below with reference to the drawings. The airbag device according to the embodiment of the present invention is mounted on a vehicle seat.

以下の説明で使用している車両の「上」は車両の天井に向かう方向であり、「下」は車両の床に向かう方向であり、「上下方向」は天井及び床が対向する方向である。また、車両の前進方向を「前」方向とし、車両の後進方向を「後」方向とする。更に、車両の幅方向とは、車両の前進方向又は後進方向と交差する方向で、「前後」方向と直交する方向である。 In the following explanation, "up" of the vehicle refers to the direction toward the vehicle's ceiling, "down" refers to the direction toward the vehicle's floor, and "up-down" refers to the direction in which the ceiling and floor face each other. Additionally, the forward movement direction of the vehicle is referred to as the "forward" direction, and the backward movement direction of the vehicle is referred to as the "rear" direction. Furthermore, the width direction of the vehicle refers to the direction that intersects with the forward or reverse movement direction of the vehicle and is perpendicular to the "fore-aft" direction.

（実施の形態１）
図１は、実施の形態１に係るエアバッグ装置４を備える車両の内部を略示する部分的斜視図である。本実施の形態のエアバッグ装置４は、いわゆるサイドエアバッグ装置である。図２は、実施の形態１に係るエアバッグ装置４を備える車両の内部を略示する平面図である。図１、図２には、車室１の床面１０上に設置された運転座席２及び助手座席３と、シートベルト５とが示されている。運転座席２は、座部２１と、該座部２１の後側から上向きに立ち上がる背もたれ２２とを備えている。 (Embodiment 1)
Fig. 1 is a partial perspective view showing the interior of a vehicle equipped with an airbag device 4 according to a first embodiment. The airbag device 4 according to the present embodiment is a so-called side airbag device. Fig. 2 is a plan view showing the interior of a vehicle equipped with the airbag device 4 according to the first embodiment. Figs. 1 and 2 show a driver's seat 2 and a passenger seat 3 installed on a floor surface 10 of a vehicle interior 1, and a seat belt 5. The driver's seat 2 includes a seat portion 21 and a backrest 22 rising upward from the rear side of the seat portion 21.

図２に示すように、実施の形態１に係るエアバッグ装置４は、車両１００の車室１内に設置されている運転座席２の背もたれ２２の助手座席３側の側部内に配してある。 As shown in FIG. 2, the airbag device 4 according to the first embodiment is disposed in the side of the backrest 22 of the driver's seat 2 on the passenger seat 3 side, which is installed in the passenger compartment 1 of the vehicle 100.

図３は、図１のＩＩＩ－ＩＩＩ線によるエアバッグ装置４の断面図である。エアバッグ装置４は、背もたれ２２の助手座席３側の側部に設けられた収納空間４０内に収納された、クッション４１（エアバッグ）とインフレータ４２とを備える。 Figure 3 is a cross-sectional view of the airbag device 4 taken along line III-III in Figure 1. The airbag device 4 includes a cushion 41 (airbag) and an inflator 42 stored in a storage space 40 provided on the side of the backrest 22 on the passenger seat 3 side.

クッション４１は、例えば、ナイロン繊維等の高強度繊維の編み込みにより強化された布地製の袋体であり、ロール状又は蛇腹状に畳まれて収納空間４０内に収納されている。クッション４１の形状及び畳み方については、後述する。
インフレータ４２は、スタッドボルト４２１（固定部材）により背もたれ２２の骨格フレーム２３に固定されている。骨格フレーム２３は、車室１内に設けられた構造体の一例である。インフレータ４２は、クッション４１の内側に設けられ、クッション４１の内部に膨張展開用のガスを噴射する。
骨格フレーム２３にはカバーが被されており、骨格フレーム２３と前記カバーとの間には緩衝材Ｃが介在している。即ち、骨格フレーム２３は緩衝材Ｃによって覆われている。 The cushion 41 is, for example, a bag made of cloth reinforced by weaving high-strength fibers such as nylon fibers, and is folded into a roll or bellows shape and stored in the storage space 40. The shape and folding method of the cushion 41 will be described later.
The inflator 42 is fixed to the skeleton frame 23 of the backrest 22 by stud bolts 421 (fixing members). The skeleton frame 23 is an example of a structure provided in the vehicle compartment 1. The inflator 42 is provided inside the cushion 41, and injects gas for inflating and deploying into the cushion 41.
The skeleton frame 23 is covered with a cover, and a cushioning material C is interposed between the skeleton frame 23 and the cover. That is, the skeleton frame 23 is covered with the cushioning material C.

収納空間４０は、背もたれ２２の前記側部内に、緩衝材Ｃと骨格フレーム２３とによって形成された凹状の空間であり、表面側が開口されている。即ち、収納空間４０の開口部は助手座席３側に向いており、運転座席２の側面と面一をなすように板状カバーＣ１に覆われている。 The storage space 40 is a concave space formed by the cushioning material C and the skeletal frame 23 within the side of the backrest 22, and is open on the front side. In other words, the opening of the storage space 40 faces the passenger seat 3 side, and is covered by a plate-shaped cover C1 so as to be flush with the side of the driver's seat 2.

板状カバーＣ１は、例えば、緩衝材Ｃと同材料である。クッション４１は、車両１００の衝突時にインフレータ４２からの噴射ガスの作用により膨張し、板状カバーＣ１を破断して側方に向けて展開する。板状カバーＣ１は、膨張展開時のクッション４１の膨張力よりも強度の低い樹脂製のものであっても良い。 The plate-shaped cover C1 is, for example, made of the same material as the cushioning material C. When the vehicle 100 collides, the cushion 41 inflates due to the action of the gas ejected from the inflator 42, breaking the plate-shaped cover C1 and deploying to the side. The plate-shaped cover C1 may be made of a resin whose strength is lower than the expansion force of the cushion 41 when inflated and deployed.

図４は実施の形態１に係るクッション４１の一例を示す斜視図である。図４では膨張した時のクッション４１を示している。図４に示す方向は、車両１００における方向を示している。クッション４１は、車両１００の水平方向に展開する水平部４１ｄと、水平部４１ｄの中央部分から、車両１００の上方向に展開する突出部４１ｅとを有する、凸字状をなす。 Figure 4 is a perspective view showing an example of the cushion 41 according to the first embodiment. Figure 4 shows the cushion 41 when inflated. The directions shown in Figure 4 indicate the directions in the vehicle 100. The cushion 41 is convex-shaped and has a horizontal portion 41d that extends in the horizontal direction of the vehicle 100 and a protruding portion 41e that extends upward from the center of the horizontal portion 41d.

クッション４１は、互いに対向する第１パネル４８１及び第２パネル４８２を、第１パネル４８１及び第２パネル４８２の対向方向に厚みを持たせるマチ部を介して結合したものである。第２パネル４８２は、第１パネル４８１を裏返した形状である。以下、第１パネル４８１及び第２パネル４８２をパネル４８とも称する。 The cushion 41 is formed by joining a first panel 481 and a second panel 482 that face each other via a gusset portion that adds thickness in the opposing direction of the first panel 481 and the second panel 482. The second panel 482 has a shape that is the first panel 481 turned inside out. Hereinafter, the first panel 481 and the second panel 482 are also referred to as panels 48.

マチ部は、第１パネル４８１及び第２パネル４８２同士の上部を結合する第１マチ部４４１と、第１パネル４８１及び第２パネル４８２同士の下部を結合する第２マチ部４４２とを含む。第１マチ部４４１及び第２マチ部４４２は、長円形状である。 The gusset portion includes a first gusset portion 441 that connects the upper portions of the first panel 481 and the second panel 482, and a second gusset portion 442 that connects the lower portions of the first panel 481 and the second panel 482. The first gusset portion 441 and the second gusset portion 442 are oval in shape.

第１パネル４８１の内側面には、整流シート４９が取り付けられている。また、第１パネル４８１と整流シート４９との間には、シリンダ型（筒型）のインフレータ４２が配置されている。整流シート４９により、インフレータ４２から噴射されるガスの流れが調整される。整流シート４９については、後述する。 A straightening sheet 49 is attached to the inner surface of the first panel 481. A cylindrical inflator 42 is disposed between the first panel 481 and the straightening sheet 49. The straightening sheet 49 adjusts the flow of gas injected from the inflator 42. The straightening sheet 49 will be described later.

また、第１パネル４８１においては、前後方向に延びる長方形の部分が水平部４１ｄを構成する（図４参照）。インフレータ４２は、斯かる長方形部分において、前後方向にて対向する両端部のうち、前側の一端部寄りに設けられている。インフレータ４２は、長手方向が前記両端部の対向方向と直交する方向（上下方向）と平行であるように設けられている。 In addition, in the first panel 481, a rectangular portion extending in the front-rear direction constitutes the horizontal portion 41d (see FIG. 4). The inflator 42 is provided in this rectangular portion, closer to the front end of both ends that face each other in the front-rear direction. The inflator 42 is provided so that its longitudinal direction is parallel to the direction perpendicular to the facing direction of the both ends (the up-down direction).

第１パネル４８１及び第２パネル４８２は、夫々の前記長方形部分の短辺同士が結合されている。また、第１パネル４８１及び第２パネル４８２は、前記長方形部分の一長辺側の突出部の縁が第１マチ部４４１と結合されている。第１パネル４８１及び第２パネル４８２は、前記長方形部分の他長辺が第２マチ部４４２と結合されている。
これにより、第１パネル４８１、第２パネル４８２、第１マチ部４４１及び第２マチ部４４２は、袋状に結合される。第１パネル４８１、第２パネル４８２、第１マチ部４４１及び第２マチ部４４２は、例えば縫い合わせ、接着又は溶着等の任意の結合手法を使用できる。 The first panel 481 and the second panel 482 are joined at the short sides of the rectangular portions. Also, the first panel 481 and the second panel 482 are joined at the edge of the protruding portion on one long side of the rectangular portions to the first gusset portion 441. The first panel 481 and the second panel 482 are joined at the other long side of the rectangular portions to the second gusset portion 442.
As a result, the first panel 481, the second panel 482, the first gusset portion 441, and the second gusset portion 442 are joined together in a bag shape. The first panel 481, the second panel 482, the first gusset portion 441, and the second gusset portion 442 can be joined together using any joining method, such as sewing, bonding, or welding.

第１パネル４８１には、スタッドボルト４２１が挿通される２つの挿通孔４１２が上下方向に並んで形成されている。なお、図４では挿通孔４１２が２つである場合を示すが、挿通孔４１２は１つ又は３つ以上であっても良い。 The first panel 481 has two insertion holes 412, through which the stud bolts 421 are inserted, formed side by side in the vertical direction. Note that while FIG. 4 shows a case in which there are two insertion holes 412, there may be one insertion hole 412 or three or more insertion holes 412.

インフレータ４２は、車両１００の衝突等の時に動作し、クッション４１の内部にガスを噴射する。クッション４１は、インフレータ４２からの噴射ガスの作用により一瞬にして膨張する。クッション４１の膨張圧力は板状カバーＣ１に作用し、上述の如く、クッション４１は板状カバーＣ１を破断して、収納空間４０の外部に膨張展開する。なお、以下、膨張展開を単に展開とも言う。 The inflator 42 operates when the vehicle 100 collides, etc., and injects gas into the cushion 41. The cushion 41 inflates instantly due to the action of the gas injected from the inflator 42. The inflation pressure of the cushion 41 acts on the plate-shaped cover C1, and as described above, the cushion 41 breaks the plate-shaped cover C1 and expands and deploys outside the storage space 40. In the following, expansion and deployment will also be simply referred to as deployment.

整流シート４９は長方形であり、その長手方向が第１パネル４８１の前記長方形部分の長手方向と平行になるように、第１パネル４８１に固定されている。整流シート４９は、例えば、縫い合わせ、接着剤の接着等の任意の固定手段を用いて第１パネル４８１に固定される。第１パネル４８１と整流シート４９との間には、インフレータ４２が配置される。 The straightening sheet 49 is rectangular and is fixed to the first panel 481 so that its longitudinal direction is parallel to the longitudinal direction of the rectangular portion of the first panel 481. The straightening sheet 49 is fixed to the first panel 481 using any fixing means, such as sewing or adhesive bonding. The inflator 42 is disposed between the first panel 481 and the straightening sheet 49.

整流シート４９は、両長辺の縁のみが第１パネル４８１に固定されている。即ち、整流シート４９は、両短辺側が全長にわたって開口し、両長辺側が全長にわたって閉鎖しており、クッション４１の突出部４１ｅとインフレータ４２との間が塞がれている。
図４中の破線の矢印は、インフレータ４２からのガスの流れを示す。インフレータ４２から噴射されたガスは、整流シート４９の短辺側から流出され、クッション４１の内部全体に充満する。 Only the edges of both long sides of the current rectifying sheet 49 are fixed to the first panel 481. That is, both short sides of the current rectifying sheet 49 are open over their entire length, and both long sides are closed over their entire length, so that the gap between the protruding portion 41 e of the cushion 41 and the inflator 42 is blocked.
4 indicate the flow of gas from the inflator 42. The gas injected from the inflator 42 flows out from the short side of the flow straightening sheet 49 and fills the entire interior of the cushion 41.

以下の説明では、説明の便宜上、クッション４１を概念的に３つの部分からなるものとする。インフレータ４２が配置される位置を境界にして、インフレータ４２から前側の一端部までの部分を第１部分４１ａとする。インフレータ４２から後側の他端部までの部分を２つの部分に分けて、前記他端部寄りの部分を第３部分４１ｃとし、第１部分４１ａ寄りの部分を第２部分４１ｂとする。即ち、第１部分４１ａ及び第３部分４１ｃの間に第２部分４１ｂが介在している。第１部分４１ａと第２部分４１ｂとの境界、及び第２部分４１ｂと第３部分４１ｃとの境界は、厳密なものではない。 For the sake of convenience, in the following explanation, the cushion 41 is conceptually composed of three parts. The position where the inflator 42 is disposed is used as the boundary, and the part from the inflator 42 to one end on the front side is referred to as the first part 41a. The part from the inflator 42 to the other end on the rear side is divided into two parts, with the part closer to the other end being referred to as the third part 41c, and the part closer to the first part 41a being referred to as the second part 41b. In other words, the second part 41b is interposed between the first part 41a and the third part 41c. The boundary between the first part 41a and the second part 41b, and the boundary between the second part 41b and the third part 41c are not strict.

図５及び図６は実施の形態１に係るクッション４１の折り畳み方法を示す説明図である。図５はクッション４１を長方形状に折り畳む方法を示す。図５Ａに示すようにクッション４１の突出部４１ｅはクッション４１の内側に折り込む。即ち、突出部４１ｅを第１パネル４８１及び第２パネル４８２の間に押し込む。または、紙面の表裏方向に折っても良い。クッション４１の底部分も突出部４１ｅと同様に第１パネル４８１及び第２パネル４８２の間に折り込む。これによって、クッション４１は図５Ａの状態から図５Ｂの状態となる。 Figures 5 and 6 are explanatory diagrams showing a method of folding the cushion 41 according to the first embodiment. Figure 5 shows a method of folding the cushion 41 into a rectangular shape. As shown in Figure 5A, the protruding portion 41e of the cushion 41 is folded inward of the cushion 41. That is, the protruding portion 41e is pushed between the first panel 481 and the second panel 482. Alternatively, it may be folded in the front-to-back direction of the page. The bottom portion of the cushion 41 is also folded between the first panel 481 and the second panel 482, similar to the protruding portion 41e. This changes the cushion 41 from the state shown in Figure 5A to the state shown in Figure 5B.

図６はクッション４１を収納空間４０内に収納するための畳み方を示す。図６は、図５Ｂのように折り畳んだクッション４１を、図５Ｂの白抜き矢印からみた図である。説明の便宜状、図６においては、整流シート４９の図示を省略する。 Figure 6 shows how to fold the cushion 41 to store it in the storage space 40. Figure 6 shows the cushion 41 folded as shown in Figure 5B, viewed from the white arrow in Figure 5B. For ease of explanation, the straightening sheet 49 is omitted from Figure 6.

クッション４１を収納空間４０内に収納するために、クッション４１の膨張展開時に水平方向の長手方向で対応する、第１部分４１ａの一端部と、第３部分４１ｃの他端部を複数回曲げて畳む。図６Ａ及び図５Ｂに示すように、畳む前のクッション４１は扁平なシート状であり、インフレータ４２が設けられている部分のみが厚み方向に突出している。第１部分４１ａの一端部及び第３部分４１ｃの他端部は、例えば、ロール状、蛇腹状に曲げて畳まれる。以下においては、ロール状に曲げて畳む場合を例に説明する。 In order to store the cushion 41 in the storage space 40, one end of the first portion 41a and the other end of the third portion 41c, which correspond in the horizontal longitudinal direction when the cushion 41 is inflated and deployed, are folded by bending multiple times. As shown in Figures 6A and 5B, the cushion 41 before folding is in a flat sheet shape, and only the portion where the inflator 42 is provided protrudes in the thickness direction. One end of the first portion 41a and the other end of the third portion 41c are folded by bending, for example, into a roll or bellows shape. The following describes the case of folding by bending into a roll as an example.

先ず、図６Ｂに示すように、第１部分４１ａの一端部をインフレータ４２に向けて複数回曲げてロール状に畳む。例えば、曲げる向きは、図５Ｂの白抜き矢印から見て、時計回りとなるように曲げる。以下、このような畳み方を「時計回りのロール巻」という。これによって、第１部分４１ａにロール状の第１造形部Ｒ１（第１造形部）が形成される（図６Ｂ参照）。
次いで、図６Ｃに示すように、第２部分４１ｂ及び第３部分４１ｃをインフレータ４２対して第１部分４１ａ（第１造形部Ｒ１）側に折り返す。この際、第１部分４１ａの第１造形部Ｒ１は、第２部分４１ｂにより覆われる。
次に、図６Ｄに示すように、第３部分４１ｃの他端部をインフレータ４２に向けて複数回曲げてロール状に折り畳む。曲げる向きは、反時計回りとなるように曲げる。以下、このような畳み方を「反時計回りのロール巻」という。これによって、第３部分４１ｃにロール状の第２造形部Ｒ２（第２造形部）が形成される（図６Ｄ参照）、第１部分４１ａの第１造形部Ｒ１が第３部分４１ｃの第２造形部Ｒ２とインフレータ４２とに挟まれた状態になる。即ち、膨張展開前のクッション４１では、インフレータ４２、第１造形部Ｒ１及び第２造形部Ｒ２が一列に配置され、第１造形部Ｒ１がインフレータ４２及び第２造形部Ｒ２の間に介在する。 First, as shown in Fig. 6B, one end of the first portion 41a is bent multiple times toward the inflator 42 to be folded into a roll shape. For example, the bending direction is clockwise as viewed from the outline arrow in Fig. 5B. Hereinafter, this type of folding method is referred to as "clockwise rolling". As a result, a roll-shaped first forming portion R1 (first forming portion) is formed in the first portion 41a (see Fig. 6B).
6C, the second portion 41b and the third portion 41c are folded back toward the first portion 41a (first formed portion R1) with respect to the inflator 42. At this time, the first formed portion R1 of the first portion 41a is covered with the second portion 41b.
Next, as shown in Fig. 6D, the other end of the third portion 41c is bent multiple times toward the inflator 42 and folded into a roll shape. The bending direction is counterclockwise. Hereinafter, this type of folding is referred to as "counterclockwise rolling". As a result, a roll-shaped second shaped portion R2 (second shaped portion) is formed in the third portion 41c (see Fig. 6D), and the first shaped portion R1 of the first portion 41a is sandwiched between the second shaped portion R2 of the third portion 41c and the inflator 42. That is, in the cushion 41 before inflation and deployment, the inflator 42, the first shaped portion R1, and the second shaped portion R2 are arranged in a line, and the first shaped portion R1 is interposed between the inflator 42 and the second shaped portion R2.

以降、図６Ｅ及び図６Ｆに示すように、第１部分４１ａの第１造形部Ｒ１を少なくとも膨張展開の開始時点まで保持する第１保持部材４３を取り付けて第１造形部Ｒ１を保持し、第３部分４１ｃの第２造形部Ｒ２を少なくとも膨張展開の開始時点まで保持する第２保持部材４４を取り付けて第２造形部Ｒ２を保持する。第１保持部材４３及び第２保持部材４４は所定の幅を有するバンド状であり、不織布、クッション４１と同種又は同じファブリック等からなる。 Then, as shown in Figures 6E and 6F, a first holding member 43 is attached to hold the first shaped portion R1 of the first portion 41a at least until the start of expansion and deployment, and a second holding member 44 is attached to hold the second shaped portion R2 of the third portion 41c at least until the start of expansion and deployment, and holds the second shaped portion R2. The first holding member 43 and the second holding member 44 are band-shaped with a predetermined width and made of nonwoven fabric, the same type of fabric as the cushion 41, or the same fabric.

第１保持部材４３は長手方向の一端部に、スタッドボルト４２１が挿通する貫通孔４３２が形成されている。第１保持部材４３の貫通孔４３２にスタッドボルト４２１が挿通されることによって、第１保持部材４３の一端がスタッドボルト４２１と係合する。第１保持部材４３は第１パネル４８１側から第１造形部Ｒ１を取り囲み、他端が、インフレータ４２及び第１造形部Ｒ１の間にて、膨張展開時に解除可能に、第２パネル４８２に仮結合している（図６Ｅ参照）。例えば、第１保持部材４３の他端は、第２パネル４８２に接着剤を用いて仮止めされ、又は、切れ易く若しくは解れやすく縫製されている。以下では、第１保持部材４３の他端が第２パネル４８２に縫い合わされている場合を例に説明する（図８の縫い目Ｓ１参照）。このように、第１保持部材４３が第１造形部Ｒ１を取り囲むことによって、第１造形部Ｒ１は膨張展開時まで形及び位置が保たれる。 The first retaining member 43 has a through hole 432 formed at one end in the longitudinal direction through which the stud bolt 421 is inserted. When the stud bolt 421 is inserted into the through hole 432 of the first retaining member 43, one end of the first retaining member 43 engages with the stud bolt 421. The first retaining member 43 surrounds the first forming portion R1 from the first panel 481 side, and the other end is temporarily connected to the second panel 482 between the inflator 42 and the first forming portion R1 so as to be releasable when inflated and deployed (see FIG. 6E). For example, the other end of the first retaining member 43 is temporarily fixed to the second panel 482 using an adhesive, or is sewn so as to be easily torn or unraveled. Below, a case where the other end of the first retaining member 43 is sewn to the second panel 482 will be described as an example (see seam S1 in FIG. 8). In this way, the first retaining member 43 surrounds the first shaped portion R1, so that the shape and position of the first shaped portion R1 is maintained until it is inflated and deployed.

第２保持部材４４は長手方向の一端部に、スタッドボルト４２１が挿通する貫通孔４４４が形成されている。第２保持部材４４の貫通孔４４４にスタッドボルト４２１が挿通されることによって、第２保持部材４４の一端がスタッドボルト４２１と係合する。第２保持部材４４は、第１パネル４８１側から、インフレータ４２及び第１造形部Ｒ１を覆い、かつ第２造形部Ｒ２を取り囲む。第２保持部材４４の他端は、膨張展開時に解除可能に、第１保持部材４３に仮結合している（図６Ｆ参照）。例えば、第２保持部材４４の他端は、第１保持部材４３に接着剤を用いて仮止めされ、又は、切れ易く若しくは解れやすく縫製されている。このように、第２保持部材４４が第２造形部Ｒ２を取り囲むことによって、第２造形部Ｒ２は膨張展開時まで形及び位置が保たれる。 The second retaining member 44 has a through hole 444 formed at one end in the longitudinal direction, through which the stud bolt 421 is inserted. When the stud bolt 421 is inserted into the through hole 444 of the second retaining member 44, one end of the second retaining member 44 engages with the stud bolt 421. The second retaining member 44 covers the inflator 42 and the first forming portion R1 from the first panel 481 side, and surrounds the second forming portion R2. The other end of the second retaining member 44 is temporarily connected to the first retaining member 43 so as to be releasable when inflated and deployed (see FIG. 6F). For example, the other end of the second retaining member 44 is temporarily fixed to the first retaining member 43 using an adhesive, or is sewn so as to be easily torn or unraveled. In this way, the second retaining member 44 surrounds the second forming portion R2, so that the shape and position of the second forming portion R2 are maintained until the second retaining member 44 is inflated and deployed.

このように、膨張展開時まで、第１保持部材４３によって第１造形部Ｒ１が保持され、第２保持部材４４によって第２造形部Ｒ２が保持されるので、第１部分４１ａ及び第３部分４１ｃが絡むなど、膨張展開時に支障が生じることを事前に防止出来る。 In this way, until the inflation and deployment, the first retaining member 43 retains the first shaped portion R1, and the second retaining member 44 retains the second shaped portion R2, so that problems that may occur during inflation and deployment, such as the first portion 41a and the third portion 41c becoming entangled, can be prevented in advance.

図７は、図６Ｅの状態のクッション４１を模式的に表す斜視図であり、図８は、図７のＶＩＩＩ－ＶＩＩＩ線による横断面図である。
第２保持部材４４の他端は、第１保持部材４３に縫い合わされており、第２保持部材４４の他端部には縫い目Ｓ２が形成されている。 FIG. 7 is a perspective view that typically illustrates the cushion 41 in the state of FIG. 6E, and FIG. 8 is a transverse sectional view taken along line VIII-VIII in FIG.
The other end of the second holding member 44 is sewn to the first holding member 43, and a seam S2 is formed at the other end of the second holding member 44.

第１保持部材４３は、運転座席２（背もたれ２２）の側部側、即ち、背もたれ２２の側部と面する部分に第１脆弱部４３１が形成されている。第１脆弱部４３１は、第１保持部材４３の幅方向に延びている。第１脆弱部４３１によって第１保持部材４３は破れ易くなり、第１部分４１ａ（第１造形部Ｒ１）の膨張展開時に第１保持部材４３が妨げにならず、容易、且つ確実に膨張展開できる。 The first retaining member 43 has a first weak portion 431 formed on the side of the driver's seat 2 (backrest 22), i.e., the portion facing the side of the backrest 22. The first weak portion 431 extends in the width direction of the first retaining member 43. The first weak portion 431 makes the first retaining member 43 more easily breakable, and the first portion 41a (first shaped portion R1) can be easily and reliably inflated and unfolded without being an obstacle when the first portion 41a (first shaped portion R1) is inflated and unfolded.

また、第２保持部材４４は、第１造形部Ｒ１、インフレータ４２及び第２造形部Ｒ２の並設される方向と対応する位置、例えば整合する位置に第２脆弱部４４３が形成されている。第２脆弱部４４３は、第２保持部材４４の幅方向に延びている。第２脆弱部４４３によって第２保持部材４４は破れ易くなり、第２部分４１ｂ及び第３部分４１ｃ（第２造形部Ｒ２）の膨張展開時に第２保持部材４４が妨げにならず、容易、且つ確実に膨張展開できる。 The second retaining member 44 has a second weak portion 443 formed at a position corresponding to, for example, a position that aligns with, the direction in which the first shaped portion R1, the inflator 42, and the second shaped portion R2 are arranged side by side. The second weak portion 443 extends in the width direction of the second retaining member 44. The second weak portion 443 makes the second retaining member 44 more easily breakable, and the second retaining member 44 does not get in the way when the second portion 41b and the third portion 41c (second shaped portion R2) are inflated and deployed, allowing them to be easily and reliably inflated and deployed.

更に、第１脆弱部４３１は第１部分４１ａが展開すべき方向（図９参照）と対応する位置に形成されており、第２脆弱部４４３は第３部分４１ｃが展開すべき方向（図９参照）と対応する位置に形成されている。即ち、第１保持部材４３においては第１脆弱部４３１の位置が先に破れて開放され、第２保持部材４４においては第２脆弱部４４３の位置が先に破れて開放される。従って、第１部分４１ａ及び第３部分４１ｃの展開が案内される。
なお、本実施の形態においては、第１脆弱部４３１及び第２脆弱部４４３が切れ目である場合を例に挙げて説明するが、これに限定されるものではない。例えば、第１脆弱部４３１及び第２脆弱部４４３は、第１保持部材４３又は第２保持部材４４の縁の部分に形成されたノッチ、切れ込み等であっても良く、縁より内側で幅方向に形成されたスリット、切れ目、ミシン目、などであっても良い。 Furthermore, the first weak portion 431 is formed at a position corresponding to the direction in which the first portion 41a should be deployed (see FIG. 9), and the second weak portion 443 is formed at a position corresponding to the direction in which the third portion 41c should be deployed (see FIG. 9). That is, the position of the first weak portion 431 in the first holding member 43 is torn and opened first, and the position of the second weak portion 443 in the second holding member 44 is torn and opened first. Therefore, the deployment of the first portion 41a and the third portion 41c is guided.
In the present embodiment, the first weak portion 431 and the second weak portion 443 are cuts, but the present invention is not limited to this. For example, the first weak portion 431 and the second weak portion 443 may be a notch, cut, or the like formed on the edge of the first holding member 43 or the second holding member 44, or may be a slit, cut, perforation, or the like formed in the width direction on the inside of the edge.

図７及び図８のようにロール状に畳まれたクッション４１は、図３で示したように、第３部分４１ｃが車両前方に、インフレータ４２が車両後方になるように、収納空間４０に収納される。即ち、第３部分４１ｃ（第２造形部Ｒ２）が第１部分４１ａ（第１造形部Ｒ１）よりも車両前方側に収納される。インフレータ４２がスタッドボルト４２１によって骨格フレーム２３に固定されることによって、クッション４１は収納空間４０に装着される。以降、板状カバーＣ１でクッション４１及び収納空間４０は覆われる。 The cushion 41 folded into a roll as shown in Figures 7 and 8 is stored in the storage space 40 so that the third portion 41c is in the front of the vehicle and the inflator 42 is in the rear of the vehicle as shown in Figure 3. That is, the third portion 41c (second shaped portion R2) is stored further forward of the vehicle than the first portion 41a (first shaped portion R1). The cushion 41 is attached to the storage space 40 by fixing the inflator 42 to the skeleton frame 23 with the stud bolts 421. The cushion 41 and storage space 40 are then covered with the plate-shaped cover C1.

図９は、実施の形態１に係るクッション４１の膨張展開過程を示す説明図である。図９は車室１の上方から見た図である。図９においては、便宜上、緩衝材Ｃ及び板状カバーＣ１の表示を省略している。 Figure 9 is an explanatory diagram showing the process of inflating and deploying the cushion 41 according to the first embodiment. Figure 9 is a view from above the vehicle interior 1. For convenience, the cushioning material C and the plate-shaped cover C1 are omitted from Figure 9.

図９Ａは展開前の状態を示す。図９Ｂは展開途中のクッション４１の状態を示す。展開が開始すると、第１部分４１ａにおいては、第１保持部材４３の第１脆弱部４３１が破られて、且つ第１保持部材４３の他端と第２パネル４８２との縫い目Ｓ１が切れる。また、第１造形部Ｒ１が車室１の上方から見て時計回りのロール巻であるので、運転座席２側に展開する。この際、第１部分４１ａは第３部分４１ｃを助手座席３前に押し出す。 Figure 9A shows the state before deployment. Figure 9B shows the state of the cushion 41 during deployment. When deployment begins, in the first portion 41a, the first weak portion 431 of the first retaining member 43 is broken, and the seam S1 between the other end of the first retaining member 43 and the second panel 482 is cut. In addition, since the first shaped portion R1 is rolled up clockwise when viewed from above the passenger compartment 1, it deploys toward the driver's seat 2. At this time, the first portion 41a pushes the third portion 41c forward of the passenger seat 3.

更に、上述したように、第３部分４１ｃ（第２造形部Ｒ２）及びインフレータ４２の間に第１部分４１ａ（第１造形部Ｒ１）が介在し、且つインフレータ４２が第１部分４１ａの一端部寄りに設けられている。従って、展開が開始すると、第１部分４１ａが第３部分４１ｃより先に膨張し、第３部分４１ｃを車両前方側に押し出すことができる。 Furthermore, as described above, the first portion 41a (first shaped portion R1) is interposed between the third portion 41c (second shaped portion R2) and the inflator 42, and the inflator 42 is provided near one end of the first portion 41a. Therefore, when deployment begins, the first portion 41a inflates before the third portion 41c, and can push the third portion 41c forward of the vehicle.

このような第１部分４１ａの作用は、展開する第３部分４１ｃを助手座席３方向に向かわせることになる。
更に、展開が開始すると、第３部分４１ｃにおいては、第２保持部材４４の第２脆弱部４４３が破られ、且つ第２保持部材４４の他端と第１保持部材４３との縫い目Ｓ２が切れる。また、第２造形部Ｒ２は車室１の上方から見て反時計回りのロール巻であるので、上述した第１部分４１ａの作用と合わせて、第３部分４１ｃは助手座席３方向に傾きながら展開する。 Such an action of the first portion 41 a causes the unfolding third portion 41 c to face in the direction of the passenger seat 3 .
Furthermore, when deployment begins, in the third portion 41c, the second fragile portion 443 of the second retaining member 44 is broken, and the seam S2 between the other end of the second retaining member 44 and the first retaining member 43 is cut. In addition, since the second formed portion R2 is rolled up counterclockwise when viewed from above the passenger compartment 1, in combination with the action of the first portion 41a described above, the third portion 41c deploys while tilting toward the passenger seat 3.

なお、第２部分４１ｂは、助手座席３方向、すなわち左方向に傾きながら展開する。一方、第１造形部Ｒ１は時計回りのロール巻であるので、上述したように、運転座席２（背もたれ２２）の中央側に傾きながら展開する。そのため、クッション４１の状態は図９Ｂに示すように、略Ｖ字状となる。 The second portion 41b unfolds while tilting toward the passenger seat 3, i.e., to the left. On the other hand, the first shaped portion R1 is rolled up clockwise, so as described above, it unfolds while tilting toward the center of the driver's seat 2 (backrest 22). Therefore, the state of the cushion 41 becomes approximately V-shaped, as shown in FIG. 9B.

図９Ｃはクッション４１の膨張展開が完了した状態を示す。図９Ｃに示すように、膨張展開した状態のクッション４１において、第３部分４１ｃは助手座席３に乗り上がる状態となる。そのため、車両衝突等の事故の際、運転座席２に着座している乗員が助手座席３側に移動することを抑制可能となる。 Figure 9C shows the state in which the cushion 41 has been fully inflated and deployed. As shown in Figure 9C, in the inflated and deployed state of the cushion 41, the third portion 41c is in a state in which it rides up onto the passenger seat 3. This makes it possible to prevent an occupant seated in the driver's seat 2 from moving toward the passenger seat 3 in the event of an accident such as a vehicle collision.

更に、上述したように、クッション４１が展開する過程において、インフレータ４２から噴射されたガスは整流シート４９によって調整され、整流シート４９の両短辺側、即ち車両１００の前後方向に流れる。即ち、インフレータ４２からのガスが、クッション４１の突出部４１ｅに直接向かうことは、整流シート４９により制限されている。 Furthermore, as described above, during the process of the cushion 41 deploying, the gas injected from the inflator 42 is adjusted by the straightening sheet 49 and flows along both short sides of the straightening sheet 49, i.e., in the front-to-rear direction of the vehicle 100. In other words, the straightening sheet 49 prevents the gas from the inflator 42 from flowing directly toward the protruding portion 41e of the cushion 41.

そのため、突出部４１ｅの充満（展開）は、助手座席３方向への展開に比べて僅かに遅れる。したがって、仮に助手座席３に着座している乗員がＯＯＰ（Out Of Position：非正規着座姿勢）であっても、展開する途中のクッション４１と強く干渉することにより、当該乗員の頭部が傷害を受けることを防止できる。これにより、非正規着座姿勢である乗員の保護の程度を評価する、いわゆるＯＯＰ試験において、良好な成績を示すエアバッグ装置４を提供できる。 Therefore, the filling (deployment) of the protrusion 41e is slightly delayed compared to the deployment in the direction of the passenger seat 3. Therefore, even if an occupant sitting in the passenger seat 3 is out of position (OOP), the head of the occupant can be prevented from being injured by strong interference with the cushion 41 as it deploys. This makes it possible to provide an airbag device 4 that performs well in the so-called OOP test, which evaluates the degree of protection for an occupant in an out-of-position seat.

また、クッション４１は、突出部４１ｅよりも、水平部４１ｄが車両１００の水平方向に向けて高速に展開する。したがって、助手座席３に着座している乗員の腹部から胸部にかけての部分を速やかに拘束して、保護できる。 The horizontal portion 41d of the cushion 41 deploys faster in the horizontal direction of the vehicle 100 than the protruding portion 41e. Therefore, the abdomen to chest area of the occupant seated in the passenger seat 3 can be quickly restrained and protected.

以上においては、クッション４１が第１造形部Ｒ１及び第２造形部Ｒ２の２つの造形部を有する状態にて収納される場合を例に挙げて説明したが、これに限定されるものではなく、３以上の造形部を有するようにしても良い。 The above describes an example in which the cushion 41 is stored with two shaped parts, the first shaped part R1 and the second shaped part R2, but this is not limited to this and the cushion may have three or more shaped parts.

（実施の形態２）
図１０は、実施の形態２に係るエアバッグ装置４のクッション４１の収納状態を模式的に表す横断面図である。図１０は、クッション４１が収納空間４０に収納されている状態を示しており、便宜上、クッション４１、インフレータ４２及びスタッドボルト４２１のみを表示する。 (Embodiment 2)
Fig. 10 is a cross-sectional view that shows a schematic representation of a stored state of the cushion 41 of the airbag device 4 according to the embodiment 2. Fig. 10 shows a state in which the cushion 41 is stored in the storage space 40, and for convenience, only the cushion 41, the inflator 42, and the stud bolt 421 are shown.

第１保持部材４３及び第２保持部材４４は、実施の形態１と同様、バンド状である。
第１保持部材４３は長手方向の一端部に、スタッドボルト４２１が挿通する貫通孔４３２が形成されている。第１保持部材４３の貫通孔４３２にスタッドボルト４２１が挿通されることによって、第１保持部材４３の一端がスタッドボルト４２１と係合する。第１保持部材４３は第１パネル４８１側から第１造形部Ｒ１を取り囲み、他端が、インフレータ４２及び第１造形部Ｒ１の間にて、膨張展開時に解除可能に、第２パネル４８２に仮結合している。例えば、第１保持部材４３の他端は第２パネル４８２に縫い合わされており、第１保持部材４３の他端部には縫い目Ｓ１が形成されている。このように、第１保持部材４３が第１造形部Ｒ１を取り囲むことによって、第１造形部Ｒ１は膨張展開時まで形及び位置が保たれる。 The first holding member 43 and the second holding member 44 are band-shaped, similar to the first embodiment.
The first holding member 43 has a through hole 432 formed at one end in the longitudinal direction, through which the stud bolt 421 is inserted. When the stud bolt 421 is inserted into the through hole 432 of the first holding member 43, one end of the first holding member 43 engages with the stud bolt 421. The first holding member 43 surrounds the first forming portion R1 from the first panel 481 side, and the other end is temporarily joined to the second panel 482 between the inflator 42 and the first forming portion R1 so as to be releasable at the time of inflation and deployment. For example, the other end of the first holding member 43 is sewn to the second panel 482, and a seam S1 is formed at the other end of the first holding member 43. In this way, the first holding member 43 surrounds the first forming portion R1, so that the shape and position of the first forming portion R1 are maintained until inflation and deployment.

第２保持部材４４は長手方向の一端部に、スタッドボルト４２１が挿通する貫通孔４４４が形成されている。第２保持部材４４の貫通孔４４４にスタッドボルト４２１が挿通されることによって、第２保持部材４４の一端がスタッドボルト４２１と係合する。第２保持部材４４は、第１保持部材４３の外側から第１部分４１ａ（第１造形部Ｒ１）を覆い、かつ第２造形部Ｒ２及びインフレータ４２を取り囲む。第２保持部材４４の他端は、膨張展開時に解除可能に、インフレータ４２付近にて、第１パネル４８１に仮結合している。例えば、第２保持部材４４の他端は、第１パネル４８１に縫い合わされており、第２保持部材４４の他端部には縫い目Ｓ２が形成されている。このように、第２保持部材４４が第２造形部Ｒ２を取り囲むことによって、第２造形部Ｒ２は膨張展開時まで形及び位置が保たれる。 The second holding member 44 has a through hole 444 formed at one end in the longitudinal direction, through which the stud bolt 421 is inserted. When the stud bolt 421 is inserted into the through hole 444 of the second holding member 44, one end of the second holding member 44 engages with the stud bolt 421. The second holding member 44 covers the first part 41a (first forming part R1) from the outside of the first holding member 43, and surrounds the second forming part R2 and the inflator 42. The other end of the second holding member 44 is temporarily connected to the first panel 481 near the inflator 42 so as to be releasable when inflated and deployed. For example, the other end of the second holding member 44 is sewn to the first panel 481, and a seam S2 is formed at the other end of the second holding member 44. In this way, the second holding member 44 surrounds the second forming part R2, so that the shape and position of the second forming part R2 are maintained until it is inflated and deployed.

このように、膨張展開時まで、第１保持部材４３によって第１造形部Ｒ１が保持され、第２保持部材４４によって第２造形部Ｒ２が保持されるので、第１部分４１ａ及び第３部分４１ｃが絡むなど、膨張展開時に支障が生じることを事前に防止出来る。 In this way, until the inflation and deployment, the first retaining member 43 retains the first shaped portion R1, and the second retaining member 44 retains the second shaped portion R2, so that problems that may occur during inflation and deployment, such as the first portion 41a and the third portion 41c becoming entangled, can be prevented in advance.

第１保持部材４３は、運転座席２（背もたれ２２）の側部側に第１脆弱部４３１が形成されている。第１脆弱部４３１は、実施の形態１と同様、第１保持部材４３の幅方向に延びている。第１脆弱部４３１によって第１保持部材４３は破れ易くなり、第１部分４１ａ（第１造形部Ｒ１）の膨張展開時に第１保持部材４３が妨げにならず、容易、且つ確実に膨張展開できる。 The first retaining member 43 has a first weak portion 431 formed on the side of the driver's seat 2 (backrest 22). As in the first embodiment, the first weak portion 431 extends in the width direction of the first retaining member 43. The first weak portion 431 makes the first retaining member 43 more easily breakable, and the first portion 41a (first shaped portion R1) can be easily and reliably inflated and unfolded without being an obstacle when the first portion 41a (first shaped portion R1) is inflated and unfolded.

また、第２保持部材４４は、第１造形部Ｒ１、インフレータ４２及び第２造形部Ｒ２の並設される方向と対応する位置、例えば整合する位置に第２脆弱部４４３が形成されている。第２脆弱部４４３は、実施の形態１と同様、第２保持部材４４の幅方向に延びている。第２脆弱部４４３によって第２保持部材４４は破れ易くなり、第２部分４１ｂ及び第３部分４１ｃ（第２造形部Ｒ２）の膨張展開時に第２保持部材４４が妨げにならず、容易、且つ確実に膨張展開できる。 The second retaining member 44 has a second weak portion 443 formed at a position corresponding to, for example, a position that aligns with, the direction in which the first shaped portion R1, the inflator 42, and the second shaped portion R2 are arranged side by side. The second weak portion 443 extends in the width direction of the second retaining member 44, as in the first embodiment. The second weak portion 443 makes the second retaining member 44 more easily breakable, and the second retaining member 44 does not get in the way when the second portion 41b and the third portion 41c (second shaped portion R2) are inflated and deployed, allowing them to be easily and reliably inflated and deployed.

更に、第１脆弱部４３１は第１部分４１ａが展開すべき方向と対応する位置に形成されており、第２脆弱部４４３は第３部分４１ｃが展開すべき方向と対応する位置に形成されている。即ち、第１保持部材４３においては第１脆弱部４３１の位置が先に破れて開放され、第２保持部材４４においては第２脆弱部４４３の位置が先に破れて開放される。従って、第１部分４１ａ及び第３部分４１ｃの展開が案内される。 Furthermore, the first weak portion 431 is formed at a position corresponding to the direction in which the first portion 41a should be deployed, and the second weak portion 443 is formed at a position corresponding to the direction in which the third portion 41c should be deployed. That is, in the first holding member 43, the position of the first weak portion 431 is torn open first, and in the second holding member 44, the position of the second weak portion 443 is torn open first. Therefore, the deployment of the first portion 41a and the third portion 41c is guided.

図１０のようにロール状に畳まれたクッション４１は、図３で示したように、第３部分４１ｃが車両前方に、インフレータ４２が車両後方になるように、収納空間４０に収納される。インフレータ４２がスタッドボルト４２１によって骨格フレーム２３に固定されることによって、クッション４１は収納空間４０に装着される。 The cushion 41, folded into a roll as shown in FIG. 10, is stored in the storage space 40 so that the third portion 41c faces the front of the vehicle and the inflator 42 faces the rear of the vehicle as shown in FIG. 3. The cushion 41 is attached to the storage space 40 by fixing the inflator 42 to the skeleton frame 23 with the stud bolts 421.

実施の形態１と同様の部分については、同一の符号を付して詳細な説明を省略する。 Parts similar to those in the first embodiment are given the same reference numerals and detailed explanations are omitted.

（実施の形態３）
図１１は、実施の形態３に係るエアバッグ装置４のクッション４１の収納状態を模式的に表す横断面図である。図１１は、クッション４１が収納空間４０に収納されている状態を示しており、便宜上、クッション４１、インフレータ４２及びスタッドボルト４２１のみを表示する。 (Embodiment 3)
Fig. 11 is a cross-sectional view that shows a schematic representation of a stored state of the cushion 41 of the airbag device 4 according to the embodiment 3. Fig. 11 shows a state in which the cushion 41 is stored in the storage space 40, and for convenience, only the cushion 41, the inflator 42, and the stud bolt 421 are shown.

第１保持部材４３及び第２保持部材４４は、実施の形態１と同様、バンド状である。
第１保持部材４３は長手方向の一端部に、スタッドボルト４２１が挿通する貫通孔４３２が形成されている。第１保持部材４３の貫通孔４３２にスタッドボルト４２１が挿通されることによって、第１保持部材４３の一端がスタッドボルト４２１と係合する。第１保持部材４３は第１パネル４８１側から第１造形部Ｒ１を取り囲み、他端が、インフレータ４２及び第１造形部Ｒ１の間にて、膨張展開時に解除可能に、第２パネル４８２に仮結合している。例えば、第１保持部材４３の他端は第２パネル４８２に縫い合わされており、第１保持部材４３の他端部には縫い目Ｓ１が形成されている。このように、第１保持部材４３が第１造形部Ｒ１を取り囲むことによって、第１造形部Ｒ１は膨張展開時まで形及び位置が保たれる。 The first holding member 43 and the second holding member 44 are band-shaped, similar to the first embodiment.
The first holding member 43 has a through hole 432 formed at one end in the longitudinal direction, through which the stud bolt 421 is inserted. When the stud bolt 421 is inserted into the through hole 432 of the first holding member 43, one end of the first holding member 43 engages with the stud bolt 421. The first holding member 43 surrounds the first forming portion R1 from the first panel 481 side, and the other end is temporarily joined to the second panel 482 between the inflator 42 and the first forming portion R1 so as to be releasable at the time of inflation and deployment. For example, the other end of the first holding member 43 is sewn to the second panel 482, and a seam S1 is formed at the other end of the first holding member 43. In this way, the first holding member 43 surrounds the first forming portion R1, so that the shape and position of the first forming portion R1 are maintained until inflation and deployment.

第２保持部材４４は長手方向の一端部に、スタッドボルト４２１が挿通する貫通孔４４４が形成されている。第２保持部材４４の貫通孔４４４にスタッドボルト４２１が挿通されることによって、第２保持部材４４の一端がスタッドボルト４２１と係合する。第２保持部材４４は、第１パネル４８１側から第１部分４１ａ（第１造形部Ｒ１）を覆い、かつ第２造形部Ｒ２及びインフレータ４２を取り囲む。第２保持部材４４の他端は、膨張展開時に解除可能に、第１造形部Ｒ１及び第２造形部Ｒ２の間付近にて、第２パネル４８２に仮結合している。例えば、第２保持部材４４の他端は、第２パネル４８２に縫い合わされており、第２保持部材４４の他端部には縫い目Ｓ２が形成されている。このように、第２保持部材４４が第２造形部Ｒ２を取り囲むことによって、第２造形部Ｒ２は膨張展開時まで形及び位置が保たれる。 The second retaining member 44 has a through hole 444 formed at one end in the longitudinal direction, through which the stud bolt 421 is inserted. When the stud bolt 421 is inserted into the through hole 444 of the second retaining member 44, one end of the second retaining member 44 engages with the stud bolt 421. The second retaining member 44 covers the first portion 41a (first forming portion R1) from the first panel 481 side, and surrounds the second forming portion R2 and the inflator 42. The other end of the second retaining member 44 is temporarily connected to the second panel 482 near the space between the first forming portion R1 and the second forming portion R2 so as to be releasable when inflated and deployed. For example, the other end of the second retaining member 44 is sewn to the second panel 482, and a seam S2 is formed at the other end of the second retaining member 44. In this way, the second retaining member 44 surrounds the second shaped portion R2, so that the shape and position of the second shaped portion R2 is maintained until it is inflated and deployed.

このように、膨張展開時まで、第１保持部材４３によって第１造形部Ｒ１が保持され、第２保持部材４４によって第２造形部Ｒ２が保持されるので、第１部分４１ａ及び第３部分４１ｃが絡むなど、膨張展開時に支障が生じることを事前に防止出来る。 In this way, until the inflation and deployment, the first retaining member 43 retains the first shaped portion R1, and the second retaining member 44 retains the second shaped portion R2, so that problems that may occur during inflation and deployment, such as the first portion 41a and the third portion 41c becoming entangled, can be prevented in advance.

第１保持部材４３は、運転座席２（背もたれ２２）の側部側、即ち、背もたれ２２の側部と面する部分に第１脆弱部４３１が形成されている。第１脆弱部４３１は、実施の形態１と同様、第１保持部材４３の幅方向に延びている。第１脆弱部４３１によって第１保持部材４３は破れ易くなり、第１部分４１ａ（第１造形部Ｒ１）の膨張展開時に第１保持部材４３が妨げにならず、容易、且つ確実に膨張展開できる。 The first retaining member 43 has a first weak portion 431 formed on the side of the driver's seat 2 (backrest 22), i.e., on the portion facing the side of the backrest 22. The first weak portion 431 extends in the width direction of the first retaining member 43, as in the first embodiment. The first weak portion 431 makes the first retaining member 43 more easily breakable, and the first portion 41a (first shaped portion R1) can be easily and reliably inflated and unfolded without being an obstacle when the first portion 41a (first shaped portion R1) is inflated and unfolded.

また、第２保持部材４４は、第１造形部Ｒ１、インフレータ４２及び第２造形部Ｒ２の並設される方向と対応する位置、例えば整合する位置に第２脆弱部４４３が形成されている。第２脆弱部４４３は、実施の形態１と同様、第２保持部材４４の幅方向に延びている。第２脆弱部４４３によって第２保持部材４４は破れ易くなり、第２部分４１ｂ及び第３部分４１ｃ（第２造形部Ｒ２）の膨張展開時に第２保持部材４４が妨げにならず、容易、且つ確実に膨張展開できる。 The second retaining member 44 has a second weak portion 443 formed at a position corresponding to, for example, a position that aligns with, the direction in which the first shaped portion R1, the inflator 42, and the second shaped portion R2 are arranged side by side. The second weak portion 443 extends in the width direction of the second retaining member 44, as in the first embodiment. The second weak portion 443 makes the second retaining member 44 more easily breakable, and the second retaining member 44 does not get in the way when the second portion 41b and the third portion 41c (second shaped portion R2) are inflated and deployed, allowing them to be easily and reliably inflated and deployed.

更に、第１脆弱部４３１は第１部分４１ａが展開すべき方向と対応する位置に形成されており、第２脆弱部４４３は第３部分４１ｃが展開すべき方向と対応する位置に形成されている。従って、第１部分４１ａ及び第３部分４１ｃの展開が案内される。 Furthermore, the first weak portion 431 is formed at a position corresponding to the direction in which the first portion 41a should be deployed, and the second weak portion 443 is formed at a position corresponding to the direction in which the third portion 41c should be deployed. Therefore, the deployment of the first portion 41a and the third portion 41c is guided.

実施の形態１又は２と同様の部分については、同一の符号を付して詳細な説明を省略する。 Parts similar to those in the first or second embodiment are given the same reference numerals and detailed explanations are omitted.

（実施の形態４）
図１２は、実施の形態４に係るエアバッグ装置４のクッション４１の収納状態を模式的に表す横断面図である。図１２は、クッション４１が収納空間４０に収納されている状態を示しており、便宜上、クッション４１、インフレータ４２及びスタッドボルト４２１のみを表示する。 (Embodiment 4)
Fig. 12 is a cross-sectional view that shows a schematic representation of a stored state of the cushion 41 of the airbag device 4 according to the embodiment 4. Fig. 12 shows a state in which the cushion 41 is stored in the storage space 40, and for convenience, only the cushion 41, the inflator 42, and the stud bolt 421 are shown.

第１保持部材４３及び第２保持部材４４は、実施の形態１と同様、バンド状である。
第２保持部材４４は長手方向の一端部に、スタッドボルト４２１が挿通する貫通孔４４４が形成されている。第２保持部材４４の貫通孔４４４にスタッドボルト４２１が挿通されることによって、第２保持部材４４の一端がスタッドボルト４２１と係合する。第２保持部材４４は、第１パネル４８１側から第１部分４１ａ（第１造形部Ｒ１）を覆い、かつ第２造形部Ｒ２及びインフレータ４２を取り囲む。第２保持部材４４の他端は、膨張展開時に解除可能に、第１造形部Ｒ１及び第２造形部Ｒ２の間付近にて、第２パネル４８２に仮結合している。例えば、第２保持部材４４の他端は、第２パネル４８２に縫い合わされており、第２保持部材４４の他端部には縫い目Ｓ２が形成されている。このように、第２保持部材４４が第２造形部Ｒ２を取り囲むことによって、第２造形部Ｒ２は膨張展開時まで形及び位置が保たれる。 The first holding member 43 and the second holding member 44 are band-shaped, similar to the first embodiment.
The second holding member 44 has a through hole 444 formed at one end in the longitudinal direction, through which the stud bolt 421 is inserted. When the stud bolt 421 is inserted into the through hole 444 of the second holding member 44, one end of the second holding member 44 engages with the stud bolt 421. The second holding member 44 covers the first portion 41a (first forming portion R1) from the first panel 481 side, and surrounds the second forming portion R2 and the inflator 42. The other end of the second holding member 44 is temporarily joined to the second panel 482 near between the first forming portion R1 and the second forming portion R2 so as to be releasable during inflation and deployment. For example, the other end of the second holding member 44 is sewn to the second panel 482, and a seam S2 is formed at the other end of the second holding member 44. In this manner, the second retaining member 44 surrounds the second forming portion R2, so that the shape and position of the second forming portion R2 is maintained until it is inflated and deployed.

第１保持部材４３は長手方向の一端部に、スタッドボルト４２１が挿通する貫通孔４３２が形成されている。第１保持部材４３の貫通孔４３２にスタッドボルト４２１が挿通されることによって、第１保持部材４３の一端がスタッドボルト４２１と係合する。第１保持部材４３は第１パネル４８１側から第１造形部Ｒ１を覆い、他端が、第２造形部Ｒ２の付近にて、膨張展開時に解除可能に、第２保持部材４４に仮結合している。例えば、第１保持部材４３の他端は第２保持部材４４に縫い合わされており、第１保持部材４３の他端部には縫い目Ｓ１が形成されている。これによって、第１造形部Ｒ１は第２保持部材４４及び第１保持部材４３によって挟持され、第１造形部Ｒ１は膨張展開時まで形及び位置が保たれる。 The first retaining member 43 has a through hole 432 formed at one end in the longitudinal direction, through which the stud bolt 421 is inserted. When the stud bolt 421 is inserted into the through hole 432 of the first retaining member 43, one end of the first retaining member 43 engages with the stud bolt 421. The first retaining member 43 covers the first forming portion R1 from the first panel 481 side, and the other end is temporarily connected to the second retaining member 44 near the second forming portion R2 so as to be releasable when inflated and deployed. For example, the other end of the first retaining member 43 is sewn to the second retaining member 44, and a seam S1 is formed at the other end of the first retaining member 43. As a result, the first forming portion R1 is sandwiched between the second retaining member 44 and the first retaining member 43, and the shape and position of the first forming portion R1 are maintained until the first retaining member 43 is inflated and deployed.

このように、膨張展開時まで、第１保持部材４３によって第１造形部Ｒ１が保持され、第２保持部材４４によって第２造形部Ｒ２が保持されるので、第１部分４１ａ及び第３部分４１ｃが絡むなど、膨張展開時に支障が生じることを事前に防止出来る。 In this way, until the inflation and deployment, the first retaining member 43 retains the first shaped portion R1, and the second retaining member 44 retains the second shaped portion R2, so that problems that may occur during inflation and deployment, such as the first portion 41a and the third portion 41c becoming entangled, can be prevented in advance.

第１保持部材４３は、運転座席２（背もたれ２２）の側部側、即ち、背もたれ２２の側部と面する部分に第１脆弱部４３１が形成されている。第１脆弱部４３１は、実施の形態１と同様、第１保持部材４３の幅方向に延びている。第１脆弱部４３１によって第１保持部材４３は破れ易くなり、第１部分４１ａ（第１造形部Ｒ１）の膨張展開時に第１保持部材４３が妨げにならず、容易、且つ確実に膨張展開できる。 The first retaining member 43 has a first weak portion 431 formed on the side of the driver's seat 2 (backrest 22), i.e., on the portion facing the side of the backrest 22. The first weak portion 431 extends in the width direction of the first retaining member 43, as in the first embodiment. The first weak portion 431 makes the first retaining member 43 more easily breakable, and the first portion 41a (first shaped portion R1) can be easily and reliably inflated and unfolded without being an obstacle when the first portion 41a (first shaped portion R1) is inflated and unfolded.

また、第２保持部材４４は、第１造形部Ｒ１、インフレータ４２及び第２造形部Ｒ２の並設される方向と対応する位置、例えば整合する位置に第２脆弱部４４３が形成されている。第２脆弱部４４３は、実施の形態１と同様、第２保持部材４４の幅方向に延びている。第２脆弱部４４３によって第２保持部材４４は破れ易くなり、第２部分４１ｂ及び第３部分４１ｃ（第２造形部Ｒ２）の膨張展開時に第２保持部材４４が妨げにならず、容易、且つ確実に膨張展開できる。 The second retaining member 44 has a second weak portion 443 formed at a position corresponding to, for example, a position that aligns with, the direction in which the first shaped portion R1, the inflator 42, and the second shaped portion R2 are arranged side by side. The second weak portion 443 extends in the width direction of the second retaining member 44, as in the first embodiment. The second weak portion 443 makes the second retaining member 44 more easily breakable, and the second retaining member 44 does not get in the way when the second portion 41b and the third portion 41c (second shaped portion R2) are inflated and deployed, allowing them to be easily and reliably inflated and deployed.

更に、第１脆弱部４３１は第１部分４１ａが展開すべき方向と対応する位置に形成されており、第２脆弱部４４３は第３部分４１ｃが展開すべき方向と対応する位置に形成されている。従って、第１部分４１ａ及び第３部分４１ｃの展開が案内される。 Furthermore, the first weak portion 431 is formed at a position corresponding to the direction in which the first portion 41a should be deployed, and the second weak portion 443 is formed at a position corresponding to the direction in which the third portion 41c should be deployed. Therefore, the deployment of the first portion 41a and the third portion 41c is guided.

実施の形態１、２又は３と同様の部分については、同一の符号を付して詳細な説明を省略する。 Parts similar to those in the first, second, or third embodiment are given the same reference numerals and detailed descriptions are omitted.

（実施の形態５）
図１３は、実施の形態５に係るエアバッグ装置４のクッション４１の収納状態を模式的に表す横断面図である。図１３は、クッション４１が収納空間４０に収納されている状態を示しており、便宜上、クッション４１、インフレータ４２及びスタッドボルト４２１のみを表示する。 (Embodiment 5)
Fig. 13 is a cross-sectional view that shows a schematic representation of a stored state of the cushion 41 of the airbag device 4 according to the embodiment 5. Fig. 13 shows a state in which the cushion 41 is stored in the storage space 40, and for convenience, only the cushion 41, the inflator 42, and the stud bolt 421 are shown.

第１保持部材４３及び第２保持部材４４は、実施の形態１と同様、バンド状である。
第１保持部材４３は長手方向の一端部に、スタッドボルト４２１が挿通する貫通孔４３２が形成されている。第１保持部材４３の貫通孔４３２にスタッドボルト４２１が挿通されることによって、第１保持部材４３の一端がスタッドボルト４２１と係合する。第１保持部材４３は第１パネル４８１側から第１造形部Ｒ１を取り囲み、他端が、第２造形部Ｒ２及び第１造形部Ｒ１の間にて、膨張展開時に解除可能に、第２パネル４８２に仮結合している。例えば、第１保持部材４３の他端は第２パネル４８２に縫い合わされており、第１保持部材４３の他端部には縫い目Ｓ１が形成されている。このように、第１保持部材４３が第１造形部Ｒ１を取り囲むことによって、第１造形部Ｒ１は膨張展開時まで形及び位置が保たれる。 The first holding member 43 and the second holding member 44 are band-shaped, similar to the first embodiment.
The first holding member 43 has a through hole 432 formed at one end in the longitudinal direction, through which the stud bolt 421 is inserted. When the stud bolt 421 is inserted into the through hole 432 of the first holding member 43, one end of the first holding member 43 engages with the stud bolt 421. The first holding member 43 surrounds the first forming portion R1 from the first panel 481 side, and the other end is temporarily joined to the second panel 482 between the second forming portion R2 and the first forming portion R1 so as to be releasable when inflated and deployed. For example, the other end of the first holding member 43 is sewn to the second panel 482, and a seam S1 is formed at the other end of the first holding member 43. In this way, the first holding member 43 surrounds the first forming portion R1, so that the shape and position of the first forming portion R1 are maintained until the first holding member 43 is inflated and deployed.

第２保持部材４４は長手方向の一端部に、スタッドボルト４２１が挿通する貫通孔４４４が形成されている。第２保持部材４４の貫通孔４４４にスタッドボルト４２１が挿通されることによって、第２保持部材４４の一端がスタッドボルト４２１と係合する。第２保持部材４４は、第１パネル４８１側から第１部分４１ａ（第１造形部Ｒ１）を覆い、かつ第２造形部Ｒ２及びインフレータ４２を取り囲む。第２保持部材４４の他端は、膨張展開時に解除可能に、第１造形部Ｒ１の付近にて、第１保持部材４３に仮結合している。例えば、第２保持部材４４の他端は、第１保持部材４３に縫い合わされており、第２保持部材４４の他端部には縫い目Ｓ２が形成されている。即ち、第２造形部Ｒ２は、第２保持部材４４によって取り囲まれ、かつ第１保持部材４３及び第２保持部材４４によって挟持される。従って、第２造形部Ｒ２は膨張展開時まで形及び位置が保たれる。 The second retaining member 44 has a through hole 444 formed at one end in the longitudinal direction, through which the stud bolt 421 is inserted. When the stud bolt 421 is inserted into the through hole 444 of the second retaining member 44, one end of the second retaining member 44 engages with the stud bolt 421. The second retaining member 44 covers the first portion 41a (first forming portion R1) from the first panel 481 side, and surrounds the second forming portion R2 and the inflator 42. The other end of the second retaining member 44 is temporarily connected to the first retaining member 43 near the first forming portion R1 so as to be releasable when inflated and deployed. For example, the other end of the second retaining member 44 is sewn to the first retaining member 43, and a seam S2 is formed at the other end of the second retaining member 44. That is, the second shaping portion R2 is surrounded by the second holding member 44 and is sandwiched between the first holding member 43 and the second holding member 44. Therefore, the shape and position of the second shaping portion R2 are maintained until it is inflated and deployed.

このように、膨張展開時まで、第１保持部材４３によって第１造形部Ｒ１が保持され、第２保持部材４４によって第２造形部Ｒ２が保持されるので、第１部分４１ａ及び第３部分４１ｃが絡むなど、膨張展開時に支障が生じることを事前に防止出来る。 In this way, until the inflation and deployment, the first retaining member 43 retains the first shaped portion R1, and the second retaining member 44 retains the second shaped portion R2, so that problems that may occur during inflation and deployment, such as the first portion 41a and the third portion 41c becoming entangled, can be prevented in advance.

第１保持部材４３は、運転座席２（背もたれ２２）の側部側に、第１保持部材４３の幅方向に延びている第１脆弱部４３１が形成されている。第１脆弱部４３１によって第１保持部材４３は破れ易くなり、第１部分４１ａ（第１造形部Ｒ１）の膨張展開時に第１保持部材４３が妨げにならず、容易、且つ確実に膨張展開できる。 The first retaining member 43 has a first weak portion 431 formed on the side of the driver's seat 2 (backrest 22) that extends in the width direction of the first retaining member 43. The first weak portion 431 makes the first retaining member 43 more easily breakable, and the first portion 41a (first shaped portion R1) can be easily and reliably inflated and unfolded without being an obstacle when the first portion 41a (first shaped portion R1) is inflated and unfolded.

また、第２保持部材４４は、第１造形部Ｒ１、インフレータ４２及び第２造形部Ｒ２の並設される方向と対応する位置、例えば整合する位置に、第２保持部材４４の幅方向に延びている第２脆弱部４４３が形成されている。第２脆弱部４４３によって第２保持部材４４は破れ易くなり、第２部分４１ｂ及び第３部分４１ｃ（第２造形部Ｒ２）の膨張展開時に第２保持部材４４が妨げにならず、容易、且つ確実に膨張展開できる。 The second retaining member 44 has a second fragile portion 443 extending in the width direction of the second retaining member 44 at a position corresponding to, for example, a position that aligns with, the direction in which the first shaping portion R1, the inflator 42, and the second shaping portion R2 are arranged side by side. The second fragile portion 443 makes the second retaining member 44 more easily breakable, and the second retaining member 44 does not get in the way when the second portion 41b and the third portion 41c (second shaping portion R2) are inflated and deployed, allowing them to be easily and reliably inflated and deployed.

更に、第１脆弱部４３１は第１部分４１ａが展開すべき方向と対応する位置に形成されており、第２脆弱部４４３は第３部分４１ｃが展開すべき方向と対応する位置に形成されている。従って、第１部分４１ａ及び第３部分４１ｃの展開が案内される。 Furthermore, the first weak portion 431 is formed at a position corresponding to the direction in which the first portion 41a should be deployed, and the second weak portion 443 is formed at a position corresponding to the direction in which the third portion 41c should be deployed. Therefore, the deployment of the first portion 41a and the third portion 41c is guided.

実施の形態１、２、３又は４と同様の部分については、同一の符号を付して詳細な説明を省略する。 Parts similar to those in the first, second, third, or fourth embodiment are given the same reference numerals and detailed descriptions are omitted.

２ 運転座席
３ 助手座席
４ エアバッグ装置
４１ クッション（エアバッグ）
４２ インフレータ
４３ 第１保持部材
４４ 第２保持部材
１００ 車両
４２１ スタッドボルト
４３１ 第１脆弱部
４４３ 第２脆弱部
Ｒ１ 第１造形部
Ｒ２ 第２造形部
Ｓ１，Ｓ２ 縫い目 2 Driver's seat 3 Passenger seat 4 Airbag device 41 Cushion (airbag)
42 Inflator 43 First holding member 44 Second holding member 100 Vehicle
421: stud bolt; 431: first weak portion; 443: second weak portion; R1: first formed portion; R2: second formed portion; S1, S2: seam

Claims (10)

シート状のエアバッグ（４１）の膨張展開時に水平方向の長手方向で対向する両端部が夫々複数回曲げられてなる造形部（Ｒ１，Ｒ２）が形成された状態で、車両（１００）の座席（２）の一側部に装着されるエアバッグ装置（４）において、
前記両端部のうち一端部の第１造形部（Ｒ１）を少なくとも膨張展開の開始時点まで保持する第１保持部材（４３）と、
他端部の第２造形部（Ｒ２）を少なくとも膨張展開の開始時点まで保持する第２保持部材（４４）と
を備えることを特徴とするエアバッグ装置（４）。 An airbag device (4) is mounted on one side of a seat (2) of a vehicle (100) in a state in which shaped portions (R1, R2) are formed by bending both ends of a sheet-like airbag (41) that face each other in a horizontal longitudinal direction multiple times when the airbag is inflated and deployed,
a first retaining member (43) that retains the first shaped portion (R1) at one end of the two end portions at least until the start of inflation and deployment;
and a second retaining member (44) that retains the second shaped portion (R2) at the other end at least until the start of inflation and deployment. 前記エアバッグ（４１）内で前記一端部寄りに設けられ、ガスを噴射するインフレータ（４２）を備え、
膨張展開前の前記エアバッグ（４１）では、前記第１造形部（Ｒ１）が前記インフレータ（４２）及び前記第２造形部（Ｒ２）の間に介在するように、前記第１造形部（Ｒ１）、前記インフレータ（４２）及び前記第２造形部（Ｒ２）が配置されていることを特徴とする請求項１に記載のエアバッグ装置（４）。 an inflator (42) provided in the airbag (41) near the one end and configured to inject gas;
The airbag device (4) according to claim 1, characterized in that, in the airbag (41) before inflation and deployment, the first shaped portion (R1), the inflator (42), and the second shaped portion (R2) are arranged such that the first shaped portion (R1) is interposed between the inflator (42) and the second shaped portion (R2). 前記第２保持部材（４４）は、
前記第２造形部（Ｒ２）の周囲を囲み、
前記インフレータ（４２）、前記第１造形部（Ｒ１）及び前記第２造形部（Ｒ２）の並設される方向に対応する位置に第２脆弱部（４４３）が形成されていることを特徴とする請求項２に記載のエアバッグ装置（４）。 The second holding member (44) is
Surrounding the periphery of the second shaping portion (R2),
The airbag device (4) according to claim 2, characterized in that a second weak portion (443) is formed at a position corresponding to the direction in which the inflator (42), the first shaped portion (R1) and the second shaped portion (R2) are arranged side by side. 前記第１保持部材（４３）は、前記座席（２）の一側部側に第１脆弱部（４３１）が形成されていることを特徴とする請求項１から３の何れか一つに記載のエアバッグ装置（４）。 An airbag device (4) according to any one of claims 1 to 3, characterized in that the first retaining member (43) has a first weak portion (431) formed on one side of the seat (2). 前記第１保持部材（４３）は、
前記第１造形部（Ｒ１）の周囲を囲み、
一端部が前記インフレータ（４２）を前記座席（２）の一側部に固定する固定部材（４２１）に固定され、
前記一端部に対応する他端部が、前記インフレータ（４２）及び前記第１造形部（Ｒ１）の間で、膨張展開時に解除可能に前記エアバッグ（４１）と結合していることを特徴とする請求項２又は３に記載のエアバッグ装置（４）。 The first holding member (43) is
Surrounding the periphery of the first shaping portion (R1),
One end of the inflator (42) is fixed to a fixing member (421) that fixes the inflator (42) to one side of the seat (2);
The airbag device (4) according to claim 2 or 3, characterized in that the other end corresponding to the one end is releasably connected to the airbag (41) between the inflator (42) and the first shaped portion (R1) when inflated and deployed. 前記第２保持部材（４４）は、
前記インフレータ（４２）及び前記第２造形部（Ｒ２）を囲み、
一端部が前記固定部材（４２１）に固定され、
前記一端部に対応する他端部が膨張展開時に解除可能に前記第１保持部材（４３）と結合していることを特徴とする請求項５に記載のエアバッグ装置（４）。 The second holding member (44) is
Surrounding the inflator (42) and the second molding portion (R2),
One end is fixed to the fixing member (421),
6. The airbag device (4) according to claim 5, wherein the other end portion corresponding to the one end portion is releasably connected to the first holding member (43) when the airbag device is inflated and deployed. 前記第２保持部材（４４）は、
前記インフレータ（４２）及び前記第２造形部（Ｒ２）を囲み、
一端部が前記固定部材（４２１）に固定され、
前記一端部に対応する他端部が、前記インフレータ（４２）の近傍で、膨張展開時に解除可能に前記エアバッグ（４１）と結合していることを特徴とする請求項５に記載のエアバッグ装置（４）。 The second holding member (44) is
Surrounding the inflator (42) and the second molding portion (R2),
One end is fixed to the fixing member (421),
6. The airbag device (4) according to claim 5, characterized in that the other end portion corresponding to the one end portion is releasably connected to the airbag (41) in the vicinity of the inflator (42) when inflated and deployed. 前記第２保持部材（４４）は、
前記インフレータ（４２）及び前記第２造形部（Ｒ２）を囲み、
一端部が前記固定部材（４２１）に固定され、
前記一端部に対応する他端部が、前記第１造形部（Ｒ１）及び前記第２造形部（Ｒ２）の間で、膨張展開時に解除可能に前記エアバッグ（４１）と結合していることを特徴とする請求項５に記載のエアバッグ装置（４）。 The second holding member (44) is
Surrounding the inflator (42) and the second molding portion (R2),
One end is fixed to the fixing member (421),
The airbag device (4) according to claim 5, characterized in that the other end portion corresponding to the one end portion is releasably connected to the airbag (41) between the first shaped portion (R1) and the second shaped portion (R2) when inflated and deployed. 前記第２保持部材（４４）は、
前記インフレータ（４２）及び前記第２造形部（Ｒ２）を囲み、
一端部が前記インフレータ（４２）を前記座席（２）の一側部に固定する固定部材（４２１）に固定され、
前記一端部に対応する他端部が、前記第１造形部（Ｒ１）及び前記第２造形部（Ｒ２）の間で、膨張展開時に解除可能に前記エアバッグ（４１）と結合しており、
前記第１保持部材（４３）は、
一端部が前記固定部材（４２１）に固定され、
前記一端部に対応する他端部が、前記第２造形部（Ｒ２）の近傍で、膨張展開時に解除可能に前記第２保持部材（４４）と結合していることを特徴とする請求項２又は３に記載のエアバッグ装置（４）。 The second holding member (44) is
Surrounding the inflator (42) and the second molding portion (R2),
One end of the inflator (42) is fixed to a fixing member (421) that fixes the inflator (42) to one side of the seat (2);
the other end portion corresponding to the one end portion is releasably connected to the airbag (41) between the first formed portion (R1) and the second formed portion (R2) when inflated and deployed;
The first holding member (43) is
One end is fixed to the fixing member (421),
The airbag device (4) according to claim 2 or 3, characterized in that the other end corresponding to the one end is releasably connected to the second retaining member (44) in the vicinity of the second shaped portion (R2) when inflated and deployed. 前記第１保持部材（４３）は、
一端部が前記インフレータ（４２）を前記座席（２）の一側部に固定する固定部材（４２１）に固定され、
前記一端部に対応する他端部が、前記第１造形部（Ｒ１）及び前記第２造形部（Ｒ２）の間で、膨張展開時に解除可能に前記エアバッグ（４１）と結合しており、
前記第２保持部材（４４）は、
前記インフレータ（４２）及び前記第２造形部（Ｒ２）を囲み、
一端部が前記固定部材（４２１）に固定され、
前記一端部に対応する他端部が膨張展開時に解除可能に前記第１保持部材（４３）と結合していることを特徴とする請求項２又は３に記載のエアバッグ装置（４）。 The first holding member (43) is
One end of the inflator (42) is fixed to a fixing member (421) that fixes the inflator (42) to one side of the seat (2);
the other end portion corresponding to the one end portion is releasably connected to the airbag (41) between the first formed portion (R1) and the second formed portion (R2) when inflated and deployed;
The second holding member (44) is
Surrounding the inflator (42) and the second molding portion (R2),
One end is fixed to the fixing member (421),
4. The airbag device (4) according to claim 2 or 3, wherein the other end portion corresponding to the one end portion is releasably connected to the first holding member (43) when the airbag device is inflated and deployed.
JP2020145955A 2019-10-18 2020-08-31 Airbag device Active JP7551404B2 (en)

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