JP7063280B2 - Airbag device for side collision - Google Patents

Airbag device for side collision Download PDF

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JP7063280B2
JP7063280B2 JP2019005897A JP2019005897A JP7063280B2 JP 7063280 B2 JP7063280 B2 JP 7063280B2 JP 2019005897 A JP2019005897 A JP 2019005897A JP 2019005897 A JP2019005897 A JP 2019005897A JP 7063280 B2 JP7063280 B2 JP 7063280B2
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occupant
bag body
tether
expansion
expansion thickness
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JP2020114687A (en
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ラモン ピンケル
雄士 松崎
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Toyoda Gosei Co Ltd
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Toyoda Gosei Co Ltd
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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
    • B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
    • 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
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • 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
    • B60R21/2334—Expansion control features
    • B60R21/2346—Soft diffusers
    • 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
    • B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
    • B60R2021/23146—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection seat mounted
    • 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
    • B60R2021/23161—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for protecting at least two passengers, e.g. preventing them from hitting each 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
    • B60R21/23—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
    • B60R2021/23316—Inner seams, e.g. creating separate compartments or used as tethering means
    • 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
    • B60R2021/23324—Inner walls crating separate compartments, e.g. communicating with vents
    • 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
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B60R2021/23386—External tether means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Description

本発明は、車両等の乗物の側壁部に対し、側突により側方から衝撃が加わった場合に、隣り合う乗物用シート間でエアバッグを展開及び膨張させることで、衝撃の加わった側壁部から遠い側の乗物用シートに着座している乗員を保護する側突用エアバッグ装置に関する。 In the present invention, when an impact is applied from the side to a side wall portion of a vehicle such as a vehicle due to a lateral collision, the side wall portion to which the impact is applied is expanded and expanded between adjacent vehicle seats. The present invention relates to a side collision airbag device that protects an occupant seated on a vehicle seat far from the vehicle.

車幅方向に複数の車両用シートが並設された車両の中には、側突用エアバッグ装置が搭載されたものがある。このタイプのエアバッグ装置は、バッグ本体を有するエアバッグと、そのバッグ本体内に配置されたガス発生器とを備え、車両用シートのうち、隣の車両用シートに近い側の側部内に組み込まれる。ガス発生器はバッグ本体の後下部に配置され、そのバッグ本体と一緒に車両用シートに固定される。 Some vehicles in which a plurality of vehicle seats are arranged side by side in the vehicle width direction are equipped with a side collision airbag device. This type of airbag device includes an airbag having a bag body and a gas generator arranged in the bag body, and is incorporated in the side portion of the vehicle seat on the side closer to the adjacent vehicle seat. Is done. The gas generator is located at the lower rear part of the bag body and is fixed to the vehicle seat together with the bag body.

そして、車両のサイドドア等の側壁部に対し、側突により側方から衝撃が加わると、ガス発生器から膨張用ガスが噴出される。この膨張用ガスにより、バッグ本体が車両用シートの側部から出て、隣り合う車両用シート間で、斜め前上方へ向けて展開及び膨張される。衝撃の加わった側壁部から遠い側の車両用シートに着座している乗員の上半身は、慣性により、その側壁部側へ倒れ込もうとするが、上記バッグ本体によって受け止められ、衝撃から保護される。 Then, when an impact is applied from the side to the side wall portion such as the side door of the vehicle due to a side collision, expansion gas is ejected from the gas generator. Due to this expansion gas, the bag body comes out from the side portion of the vehicle seat, and is expanded and expanded diagonally forward and upward between adjacent vehicle seats. The upper body of the occupant seated on the vehicle seat on the side far from the side wall where the impact was applied tries to fall toward the side wall due to inertia, but is received by the bag body and protected from the impact. ..

上記側突用エアバッグ装置では、バッグ本体を、予め定められた展開領域で展開及び膨張させることが、乗員を衝撃から保護するうえで重要である。
しかし、バッグ本体は、その後下部においてのみ固定されていることから、斜め前上方へ展開及び膨張する際に、勢いにより、車両用シートとの固定部分を中心として前後方向へ回転するように倒れようとし、上記展開領域から前後方向へ飛び出すおそれがある。 In the side collision airbag device, it is important to deploy and inflate the bag body in a predetermined deployment area in order to protect the occupant from impact.
However, since the bag body is fixed only at the lower part after that, when it expands and expands diagonally forward and upward, it will fall so as to rotate in the front-rear direction around the fixed part with the vehicle seat due to the momentum. However, there is a risk of popping out from the above-mentioned deployment area in the front-rear direction.

そこで、例えば、特許文献１には、上ストラップ部及び下ストラップ部を設け、これらを、展開及び膨張するバッグ本体によって緊張状態にさせることで、同バッグ本体の前後方向の不要な動きを抑制する技術が記載されている。 Therefore, for example, in Patent Document 1, an upper strap portion and a lower strap portion are provided, and these are brought into a tense state by a bag body that expands and expands, thereby suppressing unnecessary movement of the bag body in the front-rear direction. The technique is described.

特許第６３２７１１０号公報Japanese Patent No. 6327110

上記特許文献１によれば、バッグ本体を、予め定められた展開領域で展開及び膨張させて、乗員を衝撃から保護する性能を高めることが可能である。
ところが、上記特許文献１には、側突により乗員が、衝撃の加わった側壁部側へ倒れ込もうとした場合に、その乗員をバッグ本体によって受け止める性能を高めることに関しては、特に開示されていない。 According to the above-mentioned Patent Document 1, it is possible to expand and inflate the bag body in a predetermined deployment area to improve the performance of protecting the occupant from impact.
However, Patent Document 1 does not particularly disclose that when an occupant tries to fall down to the side wall portion to which an impact is applied due to a side collision, the performance of receiving the occupant by the bag body is enhanced. ..

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、バッグ本体の不要な動きを少なくして、乗員を衝撃から保護する性能を一層高めることのできる側突用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 reduce unnecessary movement of the bag body and further enhance the performance of protecting the occupant from impact. To provide a bag device.

上記課題を解決する側突用エアバッグ装置は、複数の乗物用シートが幅方向に並設された乗物に対し、自身の後下部に設定した固定部において固定されるバッグ本体を有するエアバッグを備え、前記乗物の側壁部に対し側方から加わる衝撃に応じて供給される膨張用ガスにより、隣り合う乗物用シート間で前記バッグ本体を、前記固定部から斜め前上方へ向けて展開及び膨張させ、前記側壁部から遠い側の乗物用シートに着座している乗員を衝撃から保護する側突用エアバッグ装置であり、前記バッグ本体の展開及び膨張に伴い同バッグ本体よりも乗員側で緊張状態になる第１外テザー及び第２外テザーをさらに備え、前記第１外テザー及び前記第２外テザーの各一端部は前記固定部に取り付けられ、前記第１外テザーの他端部は、前記バッグ本体のうち、前記乗員の肩部と当接する箇所に取り付けられ、前記第２外テザーの他端部は前記バッグ本体の前端部に取り付けられ、前記バッグ本体には、前記第１外テザーの前記他端部が取り付けられた箇所での膨張厚みを規制する第１膨張厚み規制部と、前記第１膨張厚み規制部及び前記固定部の間での膨張厚みを規制する第２膨張厚み規制部とが設けられており、前記第１膨張厚み規制部及び前記第２膨張厚み規制部の間での膨張厚みが、前記第２膨張厚み規制部及び前記固定部の間での膨張厚みよりも大きく設定されている。 The side bag airbag device that solves the above problems is an airbag having a bag body that is fixed to a vehicle in which a plurality of vehicle seats are arranged side by side in the width direction at a fixing portion set at the rear lower portion of the vehicle. The bag body is expanded and expanded diagonally forward and upward from the fixed portion between adjacent vehicle seats by the expansion gas supplied to the side wall portion of the vehicle in response to an impact applied from the side. It is a side collision airbag device that protects the occupant seated on the vehicle seat on the side far from the side wall from the impact. A first outer tether and a second outer tether to be in a state are further provided, one end of each of the first outer tether and the second outer tether is attached to the fixing portion, and the other end of the first outer tether is attached. The other end of the second outer tether is attached to the front end of the bag body, and the first outer tether is attached to the bag body. The second expansion thickness regulation that regulates the expansion thickness between the first expansion thickness regulating portion and the first expansion thickness regulating portion and the fixing portion that regulates the expansion thickness at the place where the other end portion is attached. A portion is provided, and the expansion thickness between the first expansion thickness regulating portion and the second expansion thickness regulating portion is larger than the expansion thickness between the second expansion thickness regulating portion and the fixed portion. It is set large.

上記の構成によれば、側突により、乗物の一方の側壁部に対し側方から衝撃が加わると、乗員は、慣性により衝撃の加わった側壁部側へ移動しようとする。一方で、膨張用ガスがエアバッグのバッグ本体に供給されて、同バッグ本体が、隣り合う乗物用シート間で展開及び膨張する。展開及び膨張するバッグ本体によって第１外テザー及び第２外テザーがそれぞれ引っ張られる。第２外テザーは、バッグ本体の固定部に取り付けられた一端部と、バッグ本体の前端部に取り付けられた他端部との間で緊張状態となる。 According to the above configuration, when an impact is applied from the side to one side wall portion of the vehicle due to a side collision, the occupant tends to move to the side wall portion to which the impact is applied due to inertia. On the other hand, expansion gas is supplied to the bag body of the airbag, and the bag body expands and expands between adjacent vehicle seats. The first outer tether and the second outer tether are pulled by the unfolding and expanding bag body, respectively. The second outer tether is in a tense state between one end attached to the fixed portion of the bag body and the other end attached to the front end of the bag body.

そのため、後下部に設定された固定部において乗物に固定されているバッグ本体が斜め前上方へ展開及び膨張する際に、同固定部を中心として後方へ回転しようとしても、その回転は、緊張状態の第２外テザーによって規制され、バッグ本体が後方へ倒れることが抑制される。 Therefore, when the bag body fixed to the vehicle in the fixed portion set in the lower rear part expands and expands diagonally forward and upward, even if it tries to rotate backward around the fixed portion, the rotation is in a tense state. It is regulated by the second outer tether of the bag body and is prevented from falling backward.

また、第１外テザーは、固定部に取り付けられた一端部と、バッグ本体のうち乗員の肩部と当接する箇所に取り付けられた他端部との間で緊張状態となる。バッグ本体のうち、第１膨張厚み規制部と第２膨張厚み規制部との間の領域は、第２膨張厚み規制部と固定部との間の領域よりも乗物の幅方向へ大きく膨張し、第１外テザーを乗員側へ押圧する。バッグ本体に対しては、これを固定部側へ引っ張ろうとする張力が、第１外テザーを通じて加わるところ、第１膨張厚み規制部に対し第２膨張厚み規制部側の近傍となる箇所では、曲面状の膨張部分に沿う方向、この場合、後ろ側ほど乗員に近づく側（斜め後乗員側）へ引っ張ろうとする張力が加わる。バッグ本体のうち、第１膨張厚み規制部に対し第２膨張厚み規制部側の近傍となる箇所には、乗物の幅方向のうち乗員側に向かう分力が発生する。この分力は、衝撃の加わった側壁部側へ移動しようとする乗員からバッグ本体が受ける外力を打ち消す反力として作用する。その結果、乗員から外力を受けてもバッグ本体が動きにくく、衝撃の加わった側壁部側への乗員の上記移動が抑制される。 Further, the first outer tether is in a tense state between one end portion attached to the fixed portion and the other end portion attached to the portion of the bag body that abuts on the shoulder portion of the occupant. In the bag body, the region between the first expansion thickness regulating portion and the second expansion thickness regulating portion expands more in the width direction of the vehicle than the region between the second expansion thickness regulating portion and the fixed portion. Press the first outer tether toward the occupant side. A curved surface is applied to the bag body in a place where tension for pulling the bag body toward the fixed portion is applied through the first outer tether, and the bag body is in the vicinity of the second expansion thickness regulating portion with respect to the first expansion thickness regulating portion. Tension is applied in the direction along the inflated portion, in this case, toward the rear side closer to the occupant (diagonal rear occupant side). A component force is generated in the width direction of the vehicle toward the occupant side in a portion of the bag body that is near the second expansion thickness regulation portion with respect to the first expansion thickness regulation portion. This component force acts as a reaction force that cancels the external force received by the bag body from the occupant trying to move to the side wall portion to which the impact is applied. As a result, the bag body is difficult to move even when an external force is received from the occupant, and the above-mentioned movement of the occupant to the side wall portion to which the impact is applied is suppressed.

また、第１膨張厚み規制部と第２膨張厚み規制部との間の領域は、上記のように大きな膨張厚みで膨張するが、この領域は、バッグ本体のうち乗員の肩部と当接する箇所よりも固定部側に位置する。そのため、乗員の上半身のうち、最も幅方向の寸法の大きな箇所である肩部と、乗物の幅方向に大きく膨張するバッグ本体の上記領域との干渉が抑制される。 Further, the region between the first expansion thickness regulating portion and the second expansion thickness regulating portion expands with a large expansion thickness as described above, but this region is a portion of the bag body that abuts on the shoulder of the occupant. It is located on the fixed part side. Therefore, interference between the shoulder portion, which is the portion of the upper body of the occupant having the largest dimension in the width direction, and the above-mentioned region of the bag body, which greatly expands in the width direction of the vehicle, is suppressed.

上記側突用エアバッグ装置において、前記第１外テザーにおける前記一端部と前記他端部との間の長さは、前記バッグ本体のうち前記第１外テザーの前記他端部が取り付けられた箇所と前記固定部との間の周長よりも短く設定され、前記第２外テザーにおける前記一端部と前記他端部との間の長さは、前記バッグ本体のうち前記第２外テザーの前記他端部が取り付けられた前端部と前記固定部との間の周長よりも短く設定されていることが好ましい。 In the side collision airbag device, the length between the one end portion and the other end portion of the first outer tether is such that the other end portion of the first outer tether of the bag body is attached. The length between the portion and the fixed portion is set shorter than the peripheral length, and the length between the one end portion and the other end portion in the second outer tether is the length of the second outer tether of the bag body. It is preferable that the other end portion is set shorter than the peripheral length between the front end portion to which the front end portion is attached and the fixing portion.

第１外テザーの長さが、バッグ本体の周長との関係で上記の条件を満たすように設定されると、同第１外テザーは、展開及び膨張するバッグ本体によって引っ張られ、一端部と他端部との間で緊張状態となる。 When the length of the first outer tether is set so as to satisfy the above conditions in relation to the peripheral length of the bag body, the first outer tether is pulled by the bag body that expands and expands, and is pulled by one end portion. There is a tension between the other end and the other end.

また、第２外テザーの長さが、バッグ本体の周長との関係で上記の条件を満たすように設定されると、同第２外テザーは、展開及び膨張するバッグ本体によって引っ張られ、一端部と他端部との間で緊張状態となる。 Further, when the length of the second outer tether is set so as to satisfy the above conditions in relation to the peripheral length of the bag body, the second outer tether is pulled by the bag body that expands and expands, and one end thereof. There is a tension between the portion and the other end.

上記側突用エアバッグ装置において、前記バッグ本体は、前記乗員に近い側の乗員側布部と、同乗員から遠い側の反乗員側布部とを備え、前記第１膨張厚み規制部は、前記乗員側布部及び前記反乗員側布部を互いに接触させた状態で結合しており、前記第１外テザーの前記他端部は、前記第１膨張厚み規制部により前記乗員側布部に結合されていることが好ましい。 In the side collision air bag device, the bag main body includes a occupant-side cloth portion on the side closer to the occupant and an anti-occupant-side cloth portion on the side far from the occupant, and the first expansion thickness regulating portion is The occupant-side cloth portion and the anti-occupant-side cloth portion are connected to each other in a state of being in contact with each other, and the other end portion of the first outer tether is attached to the occupant-side cloth portion by the first expansion thickness regulating portion. It is preferable that they are combined.

上記の構成によれば、第１膨張厚み規制部が設けられた箇所では、バッグ本体における乗員側布部及び反乗員側布部が互いに接触させられ、両布部の間隔が、取り得る最小となる。 According to the above configuration, at the place where the first expansion thickness regulating portion is provided, the occupant-side cloth portion and the anti-occupant-side cloth portion in the bag body are brought into contact with each other, and the distance between the two cloth portions is the minimum possible. Become.

また、第１膨張厚み規制部が設けられることで、乗員側布部及び反乗員側布部の結合と、第１外テザーの他端部のバッグ本体に対する結合とが同時に行われ、別々に行われる場合に比べ、製造工数が少なくてすむ。 Further, by providing the first expansion thickness regulating portion, the occupant-side cloth portion and the anti-occupant-side cloth portion are connected at the same time, and the other end of the first outer tether is connected to the bag body at the same time. It requires less manufacturing man-hours than the case where it is used.

上記側突用エアバッグ装置において、前記バッグ本体は、前記乗員に近い側の乗員側布部と、同乗員から遠い側の反乗員側布部とを備え、前記第１膨張厚み規制部は、前記バッグ本体内に配置されて、前記乗員側布部及び前記反乗員側布部の間に架け渡された内テザーにより構成され、前記内テザーの前記乗員側布部側の端部と、前記第１外テザーの前記他端部とは、共通の結合部により前記乗員側布部に結合されていることが好ましい。 In the side collision air bag device, the bag main body includes a occupant-side cloth portion on the side closer to the occupant and an anti-occupant-side cloth portion on the side far from the occupant, and the first expansion thickness regulating portion is It is composed of an inner tether arranged in the bag body and stretched between the occupant side cloth portion and the anti-occupant side cloth portion, and the end portion of the inner tether on the occupant side cloth portion side and the said. It is preferable that the other end of the first outer tether is coupled to the occupant-side cloth portion by a common coupling portion.

上記の構成によれば、バッグ本体の展開及び膨張に伴い、内テザーが乗物の幅方向の両側へ引っ張られて緊張状態となる。内テザーが架け渡された箇所では、バッグ本体の膨張厚みが、緊張状態の内テザーによって規制される。 According to the above configuration, as the bag body expands and expands, the inner tether is pulled to both sides in the width direction of the vehicle and becomes tense. At the place where the inner tether is laid, the expansion thickness of the bag body is regulated by the inner tether in a tense state.

また、内テザーの乗員側布部に対する結合と、第１外テザーの他端部の乗員側布部に対する結合とが、共通の結合部によって行われる。そのため、両結合が別々の結合部によって行われる場合に比べ、製造工数が少なくてすむ。 Further, the coupling of the inner tether to the occupant-side cloth portion and the coupling of the other end of the first outer tether to the occupant-side cloth portion are performed by a common coupling portion. Therefore, the manufacturing man-hours can be reduced as compared with the case where both couplings are performed by separate coupling portions.

上記側突用エアバッグ装置において、前記バッグ本体は、前記乗員に近い側の乗員側布部と、同乗員から遠い側の反乗員側布部とを備え、前記バッグ本体内の前記第１膨張厚み規制部よりも上方には第１内テザーが配置されており、前記第１内テザーの上下方向における両端部は、前記反乗員側布部において上下方向に離間した箇所に結合され、前記第１内テザーの上下方向における中間部は前記乗員側布部に結合されており、前記第１内テザーの上端部が結合された箇所と、下端部が結合された箇所との間における前記反乗員側布部の周長は、前記第１内テザーの中間部が結合された箇所における前記乗員側布部の上下方向の周長よりも長く設定されていることが好ましい。 In the side collision air bag device, the bag body includes a occupant-side cloth portion on the side closer to the occupant and an anti-occupant-side cloth portion on the side far from the occupant, and the first expansion in the bag body. The first inner tether is arranged above the thickness regulating portion, and both ends of the first inner tether in the vertical direction are coupled to the anti-crew side cloth portion at a portion separated in the vertical direction. The middle portion of the inner tether in the vertical direction is connected to the occupant side cloth portion, and the anti-occupant between the portion where the upper end portion of the first inner tether is connected and the portion where the lower end portion is connected. It is preferable that the peripheral length of the side cloth portion is set longer than the vertical peripheral length of the occupant side cloth portion at the portion where the intermediate portion of the first inner tether is joined.

上記の構成によれば、バッグ本体内の第１膨張厚み規制部よりも上方部分が、供給された膨張用ガスにより展開及び膨張するときには、第１内テザーは、緊張状態となることで、乗物の幅方向における同上方部分の膨張厚みを規制する。 According to the above configuration, when the portion above the first expansion thickness regulating portion in the bag body is expanded and expanded by the supplied expansion gas, the first inner tether is in a tense state, so that the vehicle is in a tense state. Regulates the expansion thickness of the upper part in the width direction of.

乗員側布部及び反乗員側布部に対する第１内テザーの結合位置の関係で、乗員側布部の周長と反乗員側布部の周長とが上記条件を満たすように設定されることで、第１内テザーの乗員側布部との結合箇所を支点として、バッグ本体のうち第１内テザーよりも上方部分が、上側ほど乗員側に位置するように屈曲（傾斜）した状態となる。上記上方部分は乗員の頭部に近づき、衝撃の加わった側壁部側への同頭部の動きをより一層規制する。 The circumference of the occupant side cloth portion and the circumference length of the anti-occupant side cloth portion shall be set so as to satisfy the above conditions in relation to the connection position of the first inner tether with respect to the occupant side cloth portion and the anti-occupant side cloth portion. Then, with the joint point of the first inner tether with the occupant side cloth as a fulcrum, the upper part of the bag body above the first inner tether is bent (tilted) so as to be located on the occupant side toward the upper side. .. The upper part approaches the occupant's head and further restricts the movement of the head toward the side wall where the impact is applied.

上記側突用エアバッグ装置によれば、バッグ本体の不要な動きを少なくして、乗員を衝撃から保護する性能を一層高めることができる。 According to the side collision airbag device, unnecessary movement of the bag body can be reduced, and the performance of protecting the occupant from impact can be further improved.

車両用の側突用エアバッグ装置に具体化した一実施形態を示す図であり、同エアバッグ装置が搭載された車両の部分平面図。It is a figure which shows one embodiment embodied in the airbag device for side collision for a vehicle, and is the partial plan view of the vehicle which is equipped with the airbag device. 一実施形態において、車両用シート、エアバッグ、乗員、センターコンソールボックス及び側壁部の位置関係を車両前方から見た断面図。In one embodiment, a cross-sectional view of the positional relationship between a vehicle seat, an airbag, an occupant, a center console box, and a side wall portion as viewed from the front of the vehicle. 一実施形態において、エアバッグモジュールが組み込まれたシートバックの側部の内部構造を示す部分平断面図。In one embodiment, a partial plan sectional view showing an internal structure of a side portion of a seat back in which an airbag module is incorporated. 一実施形態において、側突用エアバッグ装置が設けられた車両用シートを乗員等とともに示す側面図。In one embodiment, a side view showing a vehicle seat provided with a side collision airbag device together with an occupant and the like. 一実施形態において、バッグ本体が非膨張展開状態にされたエアバッグモジュールを反乗員側から見た側面図。In one embodiment, a side view of an airbag module in which the bag body is in a non-expandable deployed state as viewed from the anti-occupant side. 図５におけるエアバッグモジュールの内部構造を示す側断面図。FIG. 5 is a side sectional view showing the internal structure of the airbag module in FIG. 一実施形態におけるエアバッグモジュールの展開図。The development view of the airbag module in one Embodiment. 一実施形態において、バッグ本体が非膨張展開状態にされたエアバッグモジュールを乗員側から見た側面図。In one embodiment, a side view of an airbag module in which the bag body is in a non-expandable deployed state as viewed from the occupant side. 図８のＸ部を拡大して示す部分側面図。The partial side view which shows the X part of FIG. 8 enlarged. 図５の１０－１０線に沿った部分断面図。FIG. 5 is a partial cross-sectional view taken along line 10-10 of FIG. 図１０のバッグ本体が膨張した状態を示す部分断面図。FIG. 10 is a partial cross-sectional view showing a state in which the bag body of FIG. 10 is inflated. 一実施形態におけるバッグ本体の上部が展開及び膨張した状態を示す部分断面図。A partial cross-sectional view showing a state in which the upper part of the bag body in one embodiment is expanded and expanded. 側突用エアバッグ装置の変形例を示す図であり、図１０に対応する部分断面図。It is a figure which shows the modification of the airbag device for side collision, and is the partial sectional view corresponding to FIG.

以下、車両用の側突用エアバッグ装置に具体化した一実施形態について、図１～図１２を参照して説明する。
なお、以下の記載においては、車両の前進方向を前方とし、後進方向を後方として説明する。また、上下方向は車両の上下方向を意味し、左右方向は車幅方向であって車両の前進時の左右方向と一致する。また、車幅方向を規定するために、乗員を基準として、乗員に近づく側を「乗員側」といい、乗員から遠ざかる側を「反乗員側」という場合がある。さらに、車両用シートには、衝突試験用のダミーと同様の体格を有する乗員が正規の姿勢で着座しているものとする。 Hereinafter, an embodiment embodied in a side collision airbag device for a vehicle will be described with reference to FIGS. 1 to 12.
In the following description, the forward direction of the vehicle will be referred to as the front and the reverse direction will be referred to as the rear. Further, the vertical direction means the vertical direction of the vehicle, and the horizontal direction is the vehicle width direction, which coincides with the horizontal direction when the vehicle moves forward. Further, in order to define the vehicle width direction, the side closer to the occupant may be referred to as the "occupant side" and the side away from the occupant may be referred to as the "anti-occupant side" with respect to the occupant. Further, it is assumed that an occupant having the same physique as the dummy for the collision test is seated on the vehicle seat in a normal posture.

図１に示すように、乗物としての車両１０の車幅方向における両側部は、ドア、ピラー等からなる側壁部１１，１２によって構成されている。車両１０の車室内には、一対の車両用シート１３，１４が乗物用シートとして、車幅方向に並べられた状態で配置されている。側壁部１１に近い側の車両用シート１３は運転席として機能するものであり、ここに乗員（運転者）Ｐ１が着座している。側壁部１２に近い側の車両用シート１４は助手席として機能するものであり、ここに乗員Ｐ２が着座している。車室内における両車両用シート１３，１４の間には、センターコンソールボックス１５が配置されている。車両用シート１３，１４は互いに同様の構成を有している。そのため、ここでは一方の車両用シート１３についてのみ説明し、車両用シート１４については説明を省略する。この点は、車両用シート１３，１４毎に設けられる側突用エアバッグ装置についても同様である。 As shown in FIG. 1, both side portions of the vehicle 10 as a vehicle in the vehicle width direction are composed of side wall portions 11 and 12 composed of doors, pillars and the like. In the vehicle interior of the vehicle 10, a pair of vehicle seats 13 and 14 are arranged as vehicle seats in a state of being arranged in the vehicle width direction. The vehicle seat 13 on the side close to the side wall portion 11 functions as a driver's seat, and a occupant (driver) P1 is seated here. The vehicle seat 14 on the side close to the side wall portion 12 functions as a passenger seat, and the occupant P2 is seated here. A center console box 15 is arranged between the seats 13 and 14 for both vehicles in the vehicle interior. The vehicle seats 13 and 14 have similar configurations to each other. Therefore, here, only one vehicle seat 13 will be described, and the vehicle seat 14 will be omitted. This point is the same for the side collision airbag device provided for each of the vehicle seats 13 and 14.

図２及び図４に示すように、車両用シート１３は、シートクッション１６と、そのシートクッション１６の後側から起立し、かつ傾斜角度を調整可能に構成されたシートバック１７と、シートバック１７の上に配置されたヘッドレスト１８とを備えている。 As shown in FIGS. 2 and 4, the vehicle seat 13 has a seat cushion 16, a seat back 17 that stands up from the rear side of the seat cushion 16 and has an adjustable tilt angle, and a seat back 17. It has a headrest 18 arranged on top of it.

次に、車両用シート１３のシートバック１７のうち、隣の車両用シート１４に近い側の側部の内部構造について説明する。
シートバック１７の内部には、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３に示すように、シートバック１７のうち、隣の車両用シート１４に近い側の側部内に配置されており、この部分（以下「サイドフレーム部２１」という）は、金属板を曲げ加工等することによって形成されている。 Next, the internal structure of the side portion of the seat back 17 of the vehicle seat 13 on the side closer to the adjacent vehicle seat 14 will be described.
Inside the seat back 17, a seat frame forming the skeleton is arranged. As shown in FIG. 3, a part of the seat frame is arranged in the side portion of the seat back 17 on the side closer to the adjacent vehicle seat 14, and this portion (hereinafter referred to as "side frame portion 21"). Is formed by bending a metal plate or the like.

サイドフレーム部２１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２２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バックボード２３が配置されている。なお、シートパッド２２は表皮によって被覆されているが、図３ではその表皮の図示が省略されている。 A seat pad 22 made of an elastic material such as urethane foam is arranged on the front side of the seat frame including the side frame portion 21. Further, a backboard 23 formed of synthetic resin or the like is arranged on the rear side of the seat frame. Although the seat pad 22 is covered with a skin, the illustration of the skin is omitted in FIG.

シートパッド２２内において、サイドフレーム部２１よりも隣の車両用シート１４に近い側には、収納部２４が設けられている。収納部２４には、側突用エアバッグ装置の主要部をなすエアバッグモジュールＡＢＭが組み込まれている。 In the seat pad 22, a storage portion 24 is provided on the side closer to the vehicle seat 14 adjacent to the side frame portion 21. The storage unit 24 incorporates an airbag module ABM, which forms the main part of the side collision airbag device.

収納部２４の前部であって隣の車両用シート１４に近い側の角部からは、斜め前方であって同車両用シート１４に近づく側に向けてスリット２５が延びている。シートパッド２２の前部であって、車両用シート１４に近い側の角部２２ｃとスリット２５とによって挟まれた箇所（図３において二点鎖線の枠で囲んだ箇所）は、エアバッグ４０によって破断される破断予定部２６を構成している。 A slit 25 extends diagonally forward from the corner portion on the front side of the storage portion 24 and close to the adjacent vehicle seat 14, toward the side approaching the vehicle seat 14. The front portion of the seat pad 22 that is sandwiched between the corner portion 22c on the side close to the vehicle seat 14 and the slit 25 (the portion surrounded by the two-dot chain line frame in FIG. 3) is provided by the airbag 40. It constitutes a fractured portion 26 to be fractured.

図３、図５及び図６に示すように、エアバッグモジュールＡＢＭは、ガス発生器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。 As shown in FIGS. 3, 5 and 6, the airbag module ABM includes a gas generator 30 and an airbag 40 as main components. Next, each of these constituent members will be described.

＜ガス発生器３０＞
ガス発生器３０は、インフレータ３１及びリテーナ３２を備えている。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Ｇ１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は、その上端部にガス噴出部３１ａを有している。また、インフレータ３１の下端部には、同インフレータ３１への作動信号の入力配線となるハーネス（図示略）が接続されている。 <Gas generator 30>
The gas generator 30 includes an inflator 31 and a retainer 32. The inflator 31 has a substantially columnar shape, and a gas generating agent (not shown) that generates an expansion gas G1 is contained therein. The inflator 31 has a gas ejection portion 31a at its upper end. Further, a harness (not shown) that serves as an input wiring for an operation signal to the inflator 31 is connected to the lower end of the inflator 31.

一方、リテーナ３２は、膨張用ガスＧ１の噴出する方向を制御するディフューザとして機能するとともに、インフレータ３１を、エアバッグ４０と後述するインナチューブ６０と一緒にサイドフレーム部２１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。 On the other hand, the retainer 32 functions as a diffuser that controls the ejection direction of the expansion gas G1 and also has a function of fastening the inflator 31 to the side frame portion 21 together with the airbag 40 and the inner tube 60 described later. Is. Most of the retainer 32 is formed into a substantially cylindrical shape by bending a plate material such as a metal plate.

リテーナ３２の１箇所又は互いに上下方向へ離間した複数箇所には、同リテーナ３２をサイドフレーム部２１に取付けるための部材として、乗員側（運転席側）へ延びるボルト３３が固定されている。 Bolts 33 extending to the occupant side (driver's seat side) are fixed to one place of the retainer 32 or a plurality of places separated from each other in the vertical direction as a member for attaching the retainer 32 to the side frame portion 21.

＜エアバッグ４０＞
図６に示すようにエアバッグ４０は、バッグ本体４１、第１膨張厚み規制部、第２膨張厚み規制部５０、インナチューブ６０、第１内テザー７０、第１外テザー８１及び第２外テザー８２を備えている。 <Airbag 40>
As shown in FIG. 6, the airbag 40 includes a bag body 41, a first expansion thickness regulating portion, a second expansion thickness regulating portion 50, an inner tube 60, a first inner tether 70, a first outer tether 81, and a second outer tether. It is equipped with 82.

＜バッグ本体４１＞
図５、図６及び図８は、バッグ本体４１が膨張用ガスＧ１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ＡＢＭを示している。ただし、図５は、エアバッグモジュールＡＢＭを反乗員側（助手席側）から見た状態で示し、図８は、乗員側（運転席側）から見た状態で示している。また、図６は、図５のバッグ本体４１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ＡＢＭを示している。さらに、図７は、エアバッグモジュールＡＢＭを展開させた状態で示している。 <Bag body 41>
FIGS. 5, 6 and 8 show an airbag module ABM in a state in which the bag body 41 is expanded in a plane without being filled with the expansion gas G1 (hereinafter referred to as “non-expansion expansion state”). .. However, FIG. 5 shows the airbag module ABM as viewed from the anti-occupant side (passenger seat side), and FIG. 8 shows the state as viewed from the occupant side (driver's seat side). Further, FIG. 6 shows an airbag module ABM in which the bag body 41 of FIG. 5 is cut at a central portion in the vehicle width direction. Further, FIG. 7 shows a state in which the airbag module ABM is deployed.

図７に示すように、バッグ本体４１は、エアバッグ４０の外殻部分を構成する部材であり、１枚の布片（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（一対の布部）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、バッグ本体４１の上記の重ね合わされた２つの布部を区別するために、乗員Ｐ１に近い側に位置するものを乗員側布部４３といい、乗員Ｐ１から遠い側に位置するものを反乗員側布部４４というものとする。 As shown in FIG. 7, the bag main body 41 is a member constituting the outer shell portion of the airbag 40, and a piece of cloth (also referred to as a base cloth, a panel cloth, etc.) is set in the central portion thereof. It is formed by folding it in half along the line 42 and superimposing it in the vehicle width direction, and joining the overlapped portions (a pair of cloth portions) so as to form a bag. Here, in order to distinguish the above-mentioned two overlapped cloth portions of the bag body 41, the one located on the side closer to the occupant P1 is referred to as the occupant side cloth portion 43, and the one located on the side far from the occupant P1 is referred to. It shall be called the anti-occupant side cloth portion 44.

乗員側布部４３及び反乗員側布部４４は、図２及び図４に示すように、バッグ本体４１が、乗員Ｐ１の上半身の多くの部分、この場合、胸部ＰＴから頭部ＰＨにかけての部位の側方で展開及び膨張し得る形状及び大きさに形成されている。バッグ本体４１の下端部は、同バッグ本体４１が展開及び膨張したとき、センターコンソールボックス１５の上端よりも下方に位置する（図２参照）。 As shown in FIGS. 2 and 4, in the occupant side cloth portion 43 and the anti-occupant side cloth portion 44, the bag body 41 is a large part of the upper body of the occupant P1, in this case, a portion from the chest PT to the head PH. It is formed in a shape and size that can be expanded and expanded on the side of the. The lower end of the bag body 41 is located below the upper end of the center console box 15 when the bag body 41 is expanded and expanded (see FIG. 2).

乗員側布部４３及び反乗員側布部４４としては、強度が高く、伸びにくく、しかも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。 The occupant-side cloth portion 43 and the anti-occupant-side cloth portion 44 are formed by using a material having high strength, difficulty in stretching, flexibility, and easily folding, such as polyester yarn and polyamide yarn. Woven cloth or the like is suitable.

図５及び図７に示すように、乗員側布部４３及び反乗員側布部４４の上記結合は、それらの周縁部に沿って設けられた周縁結合部４５においてなされている。周縁結合部４５は、乗員側布部４３及び反乗員側布部４４の周縁部のうち、後端部（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。この点は、後述する各種結合部４９，５２，５３，５４，６４，６５，７２，７４，７６，７７，７８，８８，８９，９１についても同様である。 As shown in FIGS. 5 and 7, the above-mentioned connection between the occupant-side cloth portion 43 and the anti-occupant-side cloth portion 44 is made at the peripheral connection portion 45 provided along the peripheral edge portions thereof. The peripheral edge joint portion 45 is formed by sewing (stitching with suture) the portions of the peripheral edges of the occupant side cloth portion 43 and the anti-occupant side cloth portion 44, excluding the rear end portion (the portion near the fold line 42). Has been done. This point is the same for various connecting portions 49, 52, 53, 54, 64, 65, 72, 74, 76, 77, 78, 88, 89, 91, which will be described later.

上記縫製に関し、図５～図９では、３つの線種によって縫製部分が表現されている。１つ目の線種は、一定長さの太線を断続的に並べて表現した線であり、これは、縫糸を側方から見た状態を示している（図５における周縁結合部４５等参照）。２番目の線種は、一定長さ（一般的な破線よりも長い長さ）の細線を断続的に並べて表現した線であり、これは、例えば布片の奥に位置していて直接は見えない（隠れている）縫糸の状態を示している（図５における結合部５４等参照）。３番目の線種は、点を一定間隔おきに並べて表現した線であり、これは、縫製部分を通る面における縫糸の断面を示している（図６における周縁結合部４５等参照）。 Regarding the above sewing, in FIGS. 5 to 9, the sewn portion is represented by three line types. The first line type is a line in which thick lines of a certain length are arranged intermittently, and this shows a state in which the sewing thread is viewed from the side (see the peripheral joint portion 45 and the like in FIG. 5). .. The second line type is a line that is expressed by intermittently arranging thin lines of a certain length (longer than a general broken line), which is located in the back of a piece of cloth and is directly visible, for example. It shows the state of the sewing thread that is not (hidden) (see the joint portion 54 and the like in FIG. 5). The third line type is a line in which points are arranged at regular intervals and is represented by a cross section of a sewing thread on a surface passing through a sewn portion (see peripheral joint portion 45 and the like in FIG. 6).

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、上記各種結合部４９，５２，５３，５４，６４，６５，７２，７４，７６，７７，７８，８８，８９，９１についても同様である。 The peripheral connection portion 45 may be formed by means different from the suture using the suture, for example, adhesion using an adhesive. This point is the same for the various connecting portions 49, 52, 53, 54, 64, 65, 72, 74, 76, 77, 78, 88, 89, 91.

乗員側布部４３及び反乗員側布部４４の間であって、周縁結合部４５及び折り線４２によって囲まれた空間は、膨張用ガスＧ１によって展開及び膨張させられる膨張部となっている。 The space between the occupant-side cloth portion 43 and the anti-occupant-side cloth portion 44, which is surrounded by the peripheral coupling portion 45 and the folding line 42, is an expansion portion that is expanded and expanded by the expansion gas G1.

上記バッグ本体４１では、その後下部が、サイドフレーム部２１に固定される固定部４６として設定されている。図５及び図６に示すように、バッグ本体４１の後下端部には、ガス発生器３０の挿入口４７が形成されている。 In the bag body 41, the lower portion thereof is set as a fixing portion 46 fixed to the side frame portion 21. As shown in FIGS. 5 and 6, an insertion port 47 for the gas generator 30 is formed at the rear lower end portion of the bag body 41.

＜第１膨張厚み規制部＞
第１膨張厚み規制部は、バッグ本体４１において、乗員Ｐ１の肩部ＰＳと接触する箇所に設けられており、同箇所でのバッグ本体４１の膨張厚みを規制する。この箇所は、後述する第１外テザー８１の他端部である前上端部が取り付けられる箇所である。第１膨張厚み規制部は、乗員側布部４３及び反乗員側布部４４を互いに接触させた状態で結合する結合部４９によって構成されている（図１０参照）。結合部４９は、後ろ側ほど高くなるように傾斜している。結合部４９が設けられた箇所では、乗員側布部４３及び反乗員側布部４４の間隔が、取り得る最小（ゼロ）となっている。 <1st expansion thickness regulation part>
The first expansion thickness regulating portion is provided in the bag main body 41 at a position where the occupant P1 comes into contact with the shoulder portion PS, and regulates the expansion thickness of the bag main body 41 at the same location. This location is where the front upper end, which is the other end of the first outer tether 81, which will be described later, is attached. The first expansion thickness regulating portion is composed of a connecting portion 49 that connects the occupant-side cloth portion 43 and the anti-occupant-side cloth portion 44 in a state of being in contact with each other (see FIG. 10). The joint portion 49 is inclined so as to be higher toward the rear side. At the place where the connecting portion 49 is provided, the distance between the occupant-side cloth portion 43 and the anti-occupant-side cloth portion 44 is the minimum possible (zero).

＜第２膨張厚み規制部５０＞
図６、図７及び図１０に示すように、第２膨張厚み規制部５０は、ガス発生器３０に対し斜め前上方に離間した箇所に配置されている。第２膨張厚み規制部５０は、結合部４９と固定部４６との間に位置し、両者の間の領域におけるバッグ本体４１の膨張厚みを規制する。第２膨張厚み規制部５０は、バッグ本体４１と同様の素材からなり、かつ互いに独立した帯状の一対の布部５１を備えている。 <Second expansion thickness regulation part 50>
As shown in FIGS. 6, 7 and 10, the second expansion thickness regulating portion 50 is arranged at a position diagonally forward and upwardly separated from the gas generator 30. The second expansion thickness regulating portion 50 is located between the connecting portion 49 and the fixing portion 46, and regulates the expansion thickness of the bag body 41 in the region between the joint portion 49 and the fixing portion 46. The second expansion thickness regulating portion 50 is made of the same material as the bag main body 41, and includes a pair of strip-shaped cloth portions 51 that are independent of each other.

乗員側（運転席側）の布部５１は、これに隣接する乗員側布部４３に対し、結合部５２によって結合されている。結合部５２は、乗員側（運転席側）の布部５１の後縁部に沿って略上下方向へ延びている。結合部５２の両端部は周縁結合部４５に交差している。同様に、反乗員側（助手席側）の布部５１は、これに隣接する反乗員側布部４４に対し、結合部５３によって結合されている。この結合部５３は、反乗員側（助手席側）の布部５１の後縁部に沿って略上下方向へ延びている。結合部５３の両端部は周縁結合部４５に交差している。両布部５１は、それらの前縁部に沿って略上下方向へ延びる結合部５４によって相互に結合されている。結合部５４の両端部は、周縁結合部４５からそれぞれ離間している。 The cloth portion 51 on the occupant side (driver's seat side) is connected to the cloth portion 43 on the occupant side adjacent to the cloth portion 51 by a coupling portion 52. The joint portion 52 extends substantially in the vertical direction along the trailing edge portion of the cloth portion 51 on the occupant side (driver's seat side). Both ends of the joint 52 intersect the peripheral joint 45. Similarly, the cloth portion 51 on the anti-occupant side (passenger seat side) is coupled to the cloth portion 44 on the anti-occupant side adjacent to the cloth portion 51 by the coupling portion 53. The joint portion 53 extends substantially in the vertical direction along the trailing edge portion of the cloth portion 51 on the anti-occupant side (passenger seat side). Both ends of the joint 53 intersect the peripheral joint 45. Both cloth portions 51 are connected to each other by a connecting portion 54 extending substantially in the vertical direction along their leading edges. Both ends of the coupling portion 54 are separated from the peripheral coupling portion 45, respectively.

こうした結合態様により、第２膨張厚み規制部５０は、乗員側布部４３と反乗員側布部４４との間に架け渡されている。第２膨張厚み規制部５０では、バッグ本体４１が非膨張展開状態にあるとき、両布部５１が車幅方向に重ねられた状態となる（図１０参照）。また、第２膨張厚み規制部５０は、バッグ本体４１の展開及び膨張に伴い緊張状態になることで、同バッグ本体４１における同第２膨張厚み規制部５０の近傍部分の車幅方向の膨張厚みを規制する（図１１参照）。さらに、第２膨張厚み規制部５０は、バッグ本体４１の膨張部を、ガス発生器３０が配置される後下膨張部５５と、同第２膨張厚み規制部５０を介して後下膨張部５５の前上側に位置する前上膨張部５６とに区画している。 According to such a coupling mode, the second expansion thickness regulating portion 50 is bridged between the occupant side cloth portion 43 and the anti-occupant side cloth portion 44. In the second expansion thickness regulating portion 50, when the bag main body 41 is in the non-expandable deployment state, both cloth portions 51 are in a state of being overlapped in the vehicle width direction (see FIG. 10). Further, the second expansion thickness regulating portion 50 becomes tense due to the expansion and expansion of the bag main body 41, so that the expansion thickness in the vehicle width direction of the portion in the vicinity of the second expansion thickness regulating portion 50 in the bag main body 41. (See Fig. 11). Further, in the second expansion thickness regulating portion 50, the expansion portion of the bag main body 41 is passed through the rear lower expansion portion 55 in which the gas generator 30 is arranged and the rear lower expansion portion 55 via the second expansion thickness regulation portion 50. It is partitioned into a front upper expansion portion 56 located on the front upper side of the above.

図６に示すように、結合部５４の前下端部と周縁結合部４５の前下部との間の空間は、前下連通路５７を構成している。この前下連通路５７により、後下膨張部５５及び前上膨張部５６が、第２膨張厚み規制部５０の前下端部において連通されている。結合部５４の後上端部と周縁結合部４５の後上部との間の空間は、後上連通路５８を構成している。この後上連通路５８により、後下膨張部５５及び前上膨張部５６が、第２膨張厚み規制部５０の後上端部において連通されている。 As shown in FIG. 6, the space between the front lower end portion of the joint portion 54 and the front lower portion of the peripheral joint portion 45 constitutes the front lower continuous passage 57. The rear lower expansion portion 55 and the front upper expansion portion 56 are communicated with each other at the front lower end portion of the second expansion thickness regulating portion 50 by the front lower communication passage 57. The space between the rear upper end of the coupling portion 54 and the rear upper portion of the peripheral coupling portion 45 constitutes the rear upper connecting passage 58. The rear lower expansion portion 55 and the front upper expansion portion 56 are communicated with each other at the rear upper end portion of the second expansion thickness regulating portion 50 by the rear upper communication passage 58.

さらに、本実施形態では、図１１に示すように、バッグ本体４１のうち、結合部４９及び第２膨張厚み規制部５０の間の領域における膨張厚みが、第２膨張厚み規制部５０及び固定部４６の間の領域における膨張厚みよりも大きくなるように、第２膨張厚み規制部５０の前後位置、車幅方向における寸法等が設定されている。 Further, in the present embodiment, as shown in FIG. 11, the expansion thickness in the region between the connecting portion 49 and the second expansion thickness regulating portion 50 in the bag main body 41 is the second expansion thickness regulating portion 50 and the fixed portion. The front-rear position of the second expansion thickness regulating portion 50, the dimensions in the vehicle width direction, and the like are set so as to be larger than the expansion thickness in the region between 46.

＜インナチューブ６０＞
図６及び図７に示すように、インナチューブ６０は、ガス発生器３０の少なくともガス噴出部３１ａを取り囲んだ状態で後下膨張部５５内に配置されている。インナチューブ６０の形成のために、バッグ本体４１と同様の素材によって形成された１枚の布片が用いられている。布片は、その車幅方向の中央部に設定された折り線６１に沿って二つ折りされて車幅方向に重ね合わされている。ここでは、布片の上記の重ね合わされた２つの部分を区別するために、乗員側（運転席側）に位置する部分を布部６２といい、反乗員側（助手席側）に位置する部分を布部６３というものとする。 <Inner tube 60>
As shown in FIGS. 6 and 7, the inner tube 60 is arranged in the rear lower expansion portion 55 in a state of surrounding at least the gas ejection portion 31a of the gas generator 30. For the formation of the inner tube 60, a piece of cloth made of the same material as the bag body 41 is used. The cloth pieces are folded in half along the fold line 61 set in the central portion in the vehicle width direction and overlapped in the vehicle width direction. Here, in order to distinguish the above two overlapped parts of the cloth piece, the part located on the occupant side (driver's seat side) is referred to as the cloth part 62, and the portion located on the anti-occupant side (passenger's seat side). Is referred to as Nunobe 63.

インナチューブ６０は、折り線６１に沿って設けられた結合部６４によってバッグ本体４１に結合されている。二つ折りされた状態の両布部６２，６３は、それらの前縁部に沿って略上下方向へ延びる結合部６５によって相互に結合されている。結合部６５の後上端部は、周縁結合部４５の後上端部に交差している。両布部６２，６３の下端部は相互に結合されていない。この結合されていない箇所は、インナチューブ６０の下側の開口６６を構成している。 The inner tube 60 is connected to the bag body 41 by a connecting portion 64 provided along the folding line 61. Both cloth portions 62 and 63 in a folded state are joined to each other by a connecting portion 65 extending substantially in the vertical direction along their leading edges. The rear upper end of the joint 65 intersects the rear upper end of the peripheral joint 45. The lower ends of both cloth portions 62 and 63 are not connected to each other. This unbonded portion constitutes the lower opening 66 of the inner tube 60.

インナチューブ６０の上端部は、バッグ本体４１の後上端部まで延びており、上記周縁結合部４５によって同後上端部に対し結合（共縫い）されている。
また、各布部６２，６３の上記開口６６よりも上方となる箇所には、孔からなる開口６７が形成されている。これらの開口６６，６７によって、後下膨張部５５内において、インナチューブ６０の内部と外部とが連通されている。 The upper end portion of the inner tube 60 extends to the rear upper end portion of the bag body 41, and is coupled (co-sewn) to the rear upper end portion by the peripheral edge coupling portion 45.
Further, an opening 67 made of a hole is formed in a portion of each of the cloth portions 62, 63 above the opening 66. These openings 66 and 67 communicate the inside and the outside of the inner tube 60 in the rear lower expansion portion 55.

そして、ガス発生器３０の多くの部分が、挿入口４７を通じて挿入されることで、後下膨張部５５内の後端部であって、インナチューブ６０内の後端部に配置されている。さらに、各ボルト３３がインナチューブ６０及び乗員側布部４３に挿通されている。これらの挿通により、ガス発生器３０がインナチューブ６０及びバッグ本体４１に対し位置決めされた状態で係止されている。 Then, many parts of the gas generator 30 are inserted through the insertion port 47 to be arranged at the rear end portion in the rear lower expansion portion 55 and at the rear end portion in the inner tube 60. Further, each bolt 33 is inserted into the inner tube 60 and the occupant side cloth portion 43. By these insertions, the gas generator 30 is locked in a positioned state with respect to the inner tube 60 and the bag body 41.

＜第１内テザー７０＞
第１内テザー７０は、バッグ本体４１内の結合部４９よりも上方に配置されている。第１内テザー７０は、乗員Ｐ１の頭部ＰＨの下部（ヘッドレスト１８の下部）よりも低い箇所に配置されている（図２参照）。 <1st inner tether 70>
The first inner tether 70 is arranged above the joint portion 49 in the bag body 41. The first inner tether 70 is arranged at a position lower than the lower part of the head PH of the occupant P1 (the lower part of the headrest 18) (see FIG. 2).

図７及び図１２に示すように、第１内テザー７０は、２枚の反乗員側布片７１，７３と、１枚の乗員側布片７５とを備えている。両反乗員側布片７１，７３及び乗員側布片７５は、いずれもバッグ本体４１と同様の素材によって、上下方向よりも前後方向に細長い長方形状に形成されている。 As shown in FIGS. 7 and 12, the first inner tether 70 includes two anti-crew side cloth pieces 71 and 73 and one occupant side cloth piece 75. Both the occupant-side cloth pieces 71 and 73 and the occupant-side cloth pieces 75 are made of the same material as the bag body 41 and are formed in a rectangular shape elongated in the front-rear direction rather than the vertical direction.

両反乗員側布片７１，７３は、互いに上下方向に接近した状態で配置されている。上側の反乗員側布片７１は、自身の上端部において、略前後方向に延びる長円状の結合部７２によって反乗員側布部４４に結合されている。下側の反乗員側布片７３は、自身の下端部において、略前後方向に延びる長円状の結合部７４によって反乗員側布部４４に結合されている。 The cloth pieces 71 and 73 on both sides of the occupant are arranged so as to be close to each other in the vertical direction. The upper anti-crew side cloth piece 71 is coupled to the anti-crew side cloth portion 44 at its upper end by an elliptical joint portion 72 extending in a substantially front-rear direction. The lower anti-crew side cloth piece 73 is connected to the anti-crew side cloth portion 44 by an elliptical joint portion 74 extending substantially in the front-rear direction at the lower end portion thereof.

乗員側布片７５は、上下方向における自身の中央部分において略前後方向に延びる長円状の結合部７６によって乗員側布部４３に結合されている。結合部７６は、上下方向については、両結合部７２，７４間の中間部分に位置している。 The occupant-side cloth piece 75 is connected to the occupant-side cloth portion 43 by an elliptical joint portion 76 extending in the substantially anteroposterior direction in its central portion in the vertical direction. The joint portion 76 is located in the intermediate portion between the two joint portions 72 and 74 in the vertical direction.

上側の反乗員側布片７１の下端部と、乗員側布片７５の上端部とは、略前後方向に延びる結合部７７によって相互に結合されている。下側の反乗員側布片７３の上端部と、乗員側布片７５の下端部とは、略前後方向に延びる結合部７８によって相互に結合されている。 The lower end of the upper anti-occupant side cloth piece 71 and the upper end portion of the occupant side cloth piece 75 are connected to each other by a connecting portion 77 extending in the substantially front-rear direction. The upper end portion of the lower anti-occupant side cloth piece 73 and the lower end portion of the occupant side cloth piece 75 are connected to each other by a connecting portion 78 extending substantially in the front-rear direction.

このように、上下２枚の反乗員側布片７１，７３と１枚の乗員側布片７５とが、結合部７７，７８によって結合されることで、第１内テザー７０が構成されている。また、第１内テザー７０の上下方向における両端部が、結合部７２，７４によって反乗員側布部４４において上下方向に離間した箇所に結合されている。第１内テザー７０の上下方向における中間部が、結合部７６によって乗員側布部４３に結合されている。 In this way, the upper and lower two anti-occupant side cloth pieces 71 and 73 and one occupant side cloth piece 75 are connected by the connecting portions 77 and 78 to form the first inner tether 70. .. Further, both ends of the first inner tether 70 in the vertical direction are joined to the portions separated in the vertical direction in the cloth portion 44 on the anti-passenger side by the coupling portions 72 and 74. The vertical intermediate portion of the first inner tether 70 is coupled to the occupant side cloth portion 43 by the coupling portion 76.

こうした結合態様により、第１内テザー７０の上部及び下部は、それぞれ、乗員側布部４３と反乗員側布部４４との間に架け渡されている。
第１内テザー７０の上端部が結合部７２によって結合された箇所と、下端部が結合部７４によって結合された箇所との間における反乗員側布部４４の周長Ｌ１は、第１内テザー７０の中間部が結合部７６によって結合された箇所における乗員側布部４３の上下方向の周長Ｌ２よりも長く設定されている。前者の周長Ｌ１は、結合部７２の下端部と結合部７４の上端部との間における反乗員側布部４４の寸法である。後者の周長Ｌ２は、結合部７６によって囲まれた領域における乗員側布部４３の上下方向の寸法である。 According to such a coupling mode, the upper portion and the lower portion of the first inner tether 70 are bridged between the occupant side cloth portion 43 and the anti-occupant side cloth portion 44, respectively.
The circumference L1 of the anti-crew side cloth portion 44 between the portion where the upper end portion of the first inner tether 70 is connected by the coupling portion 72 and the portion where the lower end portion is connected by the coupling portion 74 is the first inner tether. The intermediate portion of the 70 is set longer than the vertical peripheral length L2 of the occupant-side cloth portion 43 at the portion joined by the connecting portion 76. The former peripheral length L1 is the dimension of the anti-crew side cloth portion 44 between the lower end portion of the joint portion 72 and the upper end portion of the joint portion 74. The latter peripheral length L2 is the vertical dimension of the occupant-side cloth portion 43 in the region surrounded by the connecting portion 76.

＜第１外テザー８１＞
図７及び図８に示すように、第１外テザー８１は、バッグ本体４１と同様の素材によって形成されており、前側ほど高くなるように傾斜している。第１外テザー８１は、乗員側布部４３よりも乗員側（運転席側）に配置され、バッグ本体４１とガス発生器３０との間に架け渡されている。より詳しくは、第１外テザー８１の一端部としての後下端部は、ガス発生器３０のボルト３３に係止されることで、バッグ本体４１の固定部４６に取り付けられている。第１外テザー８１の他端部として前上端部は、上述した結合部４９により、乗員側布部４３のうち、乗員Ｐ１の肩部ＰＳと当接する箇所に結合されている。なお、第１外テザー８１の後下端部は、上記ボルト３３とは異なるボルト３３に係止されてもよいし、ボルト３３に代えて、シートフレーム、例えばサイドフレーム部２１に係止されてもよい。この点は、後述する第２外テザー８２の後端部についても同様である。 <First outer tether 81>
As shown in FIGS. 7 and 8, the first outer tether 81 is made of the same material as the bag main body 41, and is inclined so as to be higher toward the front side. The first outer tether 81 is arranged on the occupant side (driver's seat side) with respect to the occupant side cloth portion 43, and is bridged between the bag main body 41 and the gas generator 30. More specifically, the rear lower end portion as one end portion of the first outer tether 81 is attached to the fixing portion 46 of the bag body 41 by being locked to the bolt 33 of the gas generator 30. As the other end of the first outer tether 81, the front upper end portion is connected to the portion of the occupant side cloth portion 43 that comes into contact with the shoulder portion PS of the occupant P1 by the above-mentioned coupling portion 49. The rear lower end portion of the first outer tether 81 may be locked to a bolt 33 different from the bolt 33, or may be locked to a seat frame, for example, a side frame portion 21 instead of the bolt 33. good. This point is the same for the rear end portion of the second outer tether 82, which will be described later.

図９に示すように、第１外テザー８１における後下端部及び前上端部の間の長さＬ３は、バッグ本体４１のうち第１外テザー８１の前上端部が取り付けられた箇所と固定部４６（ボルト３３）との間の周長Ｌ４よりも短く設定されている。 As shown in FIG. 9, the length L3 between the rear lower end portion and the front upper end portion of the first outer tether 81 is a portion and a fixing portion of the bag body 41 to which the front upper end portion of the first outer tether 81 is attached. It is set shorter than the circumference L4 between 46 (bolt 33).

＜第２外テザー８２＞
第２外テザー８２は、バッグ本体４１と同様の素材によって形成されており、第１外テザー８１よりも下方において前後方向に延びている。第２外テザー８２は、乗員側布部４３よりも乗員側（運転席側）に配置され、バッグ本体４１とガス発生器３０との間に架け渡されている。より詳しくは、第２外テザー８２の一端部としての後端部は、ガス発生器３０のボルト３３に係止されることで、固定部４６に取り付けられている。第２外テザー８２の他端部としての前端部は、上述した周縁結合部４５の一部により、バッグ本体４１の前端部に取り付けられている。 <Second outer tether 82>
The second outer tether 82 is made of the same material as the bag body 41, and extends in the front-rear direction below the first outer tether 81. The second outer tether 82 is arranged on the occupant side (driver's seat side) with respect to the occupant side cloth portion 43, and is bridged between the bag main body 41 and the gas generator 30. More specifically, the rear end portion as one end portion of the second outer tether 82 is attached to the fixing portion 46 by being locked to the bolt 33 of the gas generator 30. The front end portion of the second outer tether 82 as the other end is attached to the front end portion of the bag body 41 by a part of the peripheral coupling portion 45 described above.

第２外テザー８２の後端部及び前端部の間の長さＬ５は、バッグ本体４１のうち第２外テザー８２の前端部が取り付けられた箇所と固定部４６（ボルト３３）との間の周長Ｌ６よりも短く設定されている。 The length L5 between the rear end portion and the front end portion of the second outer tether 82 is between the portion of the bag body 41 to which the front end portion of the second outer tether 82 is attached and the fixing portion 46 (bolt 33). It is set shorter than the circumference L6.

ところで、上記エアバッグモジュールＡＢＭは、バッグ本体４１が非膨張展開状態にされたエアバッグ４０（図５参照）が折り畳まれることにより、図３に示すように、コンパクトな形態にされて、収納部２４に収容されている。 By the way, the airbag module ABM is made into a compact form as shown in FIG. 3 by folding the airbag 40 (see FIG. 5) in which the bag main body 41 is in the non-expandable deployed state, and the storage unit. It is housed in 24.

図３及び図５に示すように、ガス発生器３０のボルト３３が、サイドフレーム部２１に対し反乗員側（助手席側）から挿通されている。各ボルト３３にナット３４が乗員側（運転席側）から締付けられることにより、バッグ本体４１の固定部４６と、インナチューブ６０の後下部とがガス発生器３０とともに、サイドフレーム部２１に固定されている。 As shown in FIGS. 3 and 5, the bolt 33 of the gas generator 30 is inserted into the side frame portion 21 from the counter-occupant side (passenger seat side). By tightening the nut 34 to each bolt 33 from the occupant side (driver's seat side), the fixing portion 46 of the bag body 41 and the rear lower portion of the inner tube 60 are fixed to the side frame portion 21 together with the gas generator 30. ing.

なお、ガス発生器３０は、上述したボルト３３及びナット３４とは異なる部材によってサイドフレーム部２１に固定されてもよい。また、リテーナ３２が用いられることなくインフレータ３１がサイドフレーム部２１に固定されてもよい。 The gas generator 30 may be fixed to the side frame portion 21 by a member different from the bolt 33 and the nut 34 described above. Further, the inflator 31 may be fixed to the side frame portion 21 without using the retainer 32.

側突用エアバッグ装置は、上述したエアバッグモジュールＡＢＭのほかに、図４に示す衝撃センサ８４及び制御装置８５を備えている。衝撃センサ８４は加速度センサ等からなり、車両１０に対し側方から加えられる衝撃を検出する。制御装置８５は、衝撃センサ８４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 side collision airbag device includes the impact sensor 84 and the control device 85 shown in FIG. 4 in addition to the above-mentioned airbag module ABM. The impact sensor 84 is composed of an acceleration sensor or the like, and detects an impact applied to the vehicle 10 from the side. The control device 85 controls the operation of the inflator 31 based on the detection signal of the impact sensor 84.

さらに、車両１０には、乗員Ｐ１，Ｐ２を車両用シート１３，１４に拘束するためのシートベルト装置（図示略）が設けられている。
次に、上記のように構成された本実施形態の作用及び効果について説明する。 Further, the vehicle 10 is provided with a seat belt device (not shown) for restraining the occupants P1 and P2 to the vehicle seats 13 and 14.
Next, the operation and effect of the present embodiment configured as described above will be described.

図１に示すように、側突による衝撃が一方の側壁部１２に対し側方から加わると、衝撃の加わった側壁部１２から遠い側（運転席側）の乗員Ｐ１の上半身が、慣性により側壁部１２側へ倒れ込もうとする。 As shown in FIG. 1, when the impact due to the side collision is applied to one side wall portion 12 from the side, the upper body of the occupant P1 on the side far from the side wall portion 12 to which the impact is applied (driver's seat side) becomes the side wall due to inertia. Trying to fall to the part 12 side.

また、側壁部１２に対し側方から所定値以上の衝撃が加わったことが衝撃センサ８４によって検出されると、その検出信号に基づき制御装置８５からインフレータ３１に対し作動信号が出力される。この作動信号に応じて、図６に示すように、インフレータ３１のガス噴出部３１ａから膨張用ガスＧ１が噴出されると、その膨張用ガスＧ１はまずインナチューブ６０に供給され、同インナチューブ６０が膨張を開始する。 Further, when the impact sensor 84 detects that an impact of a predetermined value or more is applied to the side wall portion 12 from the side, an operation signal is output from the control device 85 to the inflator 31 based on the detection signal. As shown in FIG. 6, when the expansion gas G1 is ejected from the gas ejection portion 31a of the inflator 31 in response to this operation signal, the expansion gas G1 is first supplied to the inner tube 60, and the expansion gas G1 is first supplied to the inner tube 60. Starts to expand.

膨張用ガスＧ１の一部は、開口６６，６７から、後下膨張部５５であってインナチューブ６０の外部へ流出する。後下膨張部５５では、膨張用ガスＧ１が供給されることで内圧が上昇し、同後下膨張部５５が折り状態を解消（展開）しながら膨張を開始する。後下膨張部５５の展開及び膨張に伴い第２膨張厚み規制部５０が車幅方向の両側へ引っ張られる。 A part of the expansion gas G1 flows out from the openings 66 and 67 to the outside of the inner tube 60 at the rear lower expansion portion 55. In the rear lower expansion portion 55, the internal pressure rises due to the supply of the expansion gas G1, and the rear lower expansion portion 55 starts expansion while canceling (expanding) the folded state. The second expansion thickness regulating portion 50 is pulled to both sides in the vehicle width direction as the rear lower expansion portion 55 expands and expands.

後下膨張部５５に供給された膨張用ガスＧ１の一部は、前下連通路５７及び後上連通路５８を通って、前上膨張部５６に流入する。前上膨張部５６は、後下膨張部５５に遅れて折り状態を解消（展開）しながら膨張を開始する。前上膨張部５６の展開及び膨張に伴い第１内テザー７０が車幅方向の両側へ引っ張られる。 A part of the expansion gas G1 supplied to the rear lower expansion portion 55 flows into the front upper expansion portion 56 through the front lower continuous passage 57 and the rear upper continuous passage 58. The front upper expansion portion 56 starts expansion while canceling (expanding) the folded state behind the rear lower expansion portion 55. The first inner tether 70 is pulled to both sides in the vehicle width direction as the front upper expansion portion 56 expands and expands.

上記のように、後下膨張部５５及び前上膨張部５６が展開及び膨張する過程で、図３における収納部２４の近傍部分ではシートパッド２２が押圧され、破断予定部２６において破断される。バッグ本体４１は、ガス発生器３０の近傍部分を収納部２４内に残した状態で、同収納部２４から飛び出す。その後も、図２及び図４に示すように、バッグ本体４１は、隣り合う車両用シート１３，１４間で、固定部４６から斜め前上方へ向けて展開及び膨張する。 As described above, in the process of expanding and expanding the rear lower expansion portion 55 and the front upper expansion portion 56, the seat pad 22 is pressed in the vicinity of the storage portion 24 in FIG. 3 and is broken at the planned fracture portion 26. The bag body 41 pops out of the storage unit 24 with a portion near the gas generator 30 left in the storage unit 24. After that, as shown in FIGS. 2 and 4, the bag main body 41 expands and expands diagonally forward and upward from the fixed portion 46 between the adjacent vehicle seats 13 and 14.

ここで、側突用エアバッグ装置では、バッグ本体４１を、予め定められた展開領域で展開及び膨張させることが、乗員Ｐ１を衝撃から保護するうえで重要である。
この点、本実施形態では、展開及び膨張するバッグ本体４１によって第１外テザー８１及び第２外テザー８２がそれぞれ引っ張られる。 Here, in the side collision airbag device, it is important to deploy and expand the bag body 41 in a predetermined deployment region in order to protect the occupant P1 from an impact.
In this respect, in the present embodiment, the first outer tether 81 and the second outer tether 82 are pulled by the expanding and expanding bag main body 41, respectively.

図９に示すように、第２外テザー８２の長さＬ５が、同第２外テザー８２が取り付けられるバッグ本体４１の周長Ｌ６よりも短い。このことから、展開及び膨張するバッグ本体４１によって引っ張られた第２外テザー８２は、固定部４６に取り付けられた後端部と、バッグ本体４１の前端部に取り付けられた前端部との間で緊張状態となる。従って、固定部４６においてサイドフレーム部２１に固定されているバッグ本体４１が斜め前上方へ展開及び膨張する際に、図８において矢印Ａで示すように、固定部４６を中心として後方へ回転しようとしても、その回転は、バッグ本体４１の前端部を矢印Ｂで示すように引っ張る第２外テザー８２によって規制される。その結果、バッグ本体４１が後方へ倒れるのを抑制することができる。 As shown in FIG. 9, the length L5 of the second outer tether 82 is shorter than the peripheral length L6 of the bag body 41 to which the second outer tether 82 is attached. From this, the second outer tether 82 pulled by the bag body 41 that expands and expands is between the rear end portion attached to the fixing portion 46 and the front end portion attached to the front end portion of the bag body 41. I'm in a tense state. Therefore, when the bag body 41 fixed to the side frame portion 21 in the fixing portion 46 expands and expands diagonally forward and upward, as shown by an arrow A in FIG. 8, it will rotate backward about the fixing portion 46. Even so, its rotation is regulated by a second outer tether 82 that pulls the front end of the bag body 41 as indicated by the arrow B. As a result, it is possible to prevent the bag body 41 from falling backward.

また、図９に示すように、第１外テザー８１の長さＬ３が、同第１外テザー８１が取り付けられるバッグ本体４１の周長Ｌ４よりも短い。このことから、展開及び膨張するバッグ本体４１によって引っ張られた第１外テザー８１は、固定部４６に取り付けられた後下端部と、バッグ本体４１に取り付けられた前上端部との間で緊張状態となる。従って、バッグ本体４１が斜め前上方へ展開及び膨張する際に、固定部４６を中心として前方へ回転しようとしても、その回転は、上記緊張状態の第１外テザー８１によって規制される。その結果、バッグ本体４１が前方へ倒れるのを抑制することができる。 Further, as shown in FIG. 9, the length L3 of the first outer tether 81 is shorter than the peripheral length L4 of the bag body 41 to which the first outer tether 81 is attached. From this, the first outer tether 81 pulled by the bag body 41 that expands and expands is in a tense state between the rear lower end portion attached to the fixing portion 46 and the front upper end portion attached to the bag body 41. Will be. Therefore, when the bag body 41 expands and expands diagonally forward and upward, even if it tries to rotate forward about the fixing portion 46, the rotation is restricted by the first outer tether 81 in the tense state. As a result, it is possible to prevent the bag body 41 from falling forward.

このように、バッグ本体４１を、予め定められた展開領域で展開及び膨張させ、同バッグ本体４１が同展開領域から前後方向へ飛び出すのを抑制することができる。
そして、展開及び膨張を完了したときには、バッグ本体４１は、両車両用シート１３，１４に着座している乗員Ｐ１，Ｐ２間に位置する。後下膨張部５５の後下端部は、車両用シート１３に着座している乗員Ｐ１とセンターコンソールボックス１５との間に位置する（図２参照）。そのため、後下膨張部５５の後下端部は、バッグ本体４１が、衝撃の加わった側壁部１２側へ倒れ込む乗員Ｐ１の上半身を受け止める際に、同側壁部１２側へ動きにくい。 In this way, the bag main body 41 can be expanded and expanded in a predetermined expansion region, and the bag main body 41 can be prevented from jumping out from the expansion region in the front-rear direction.
When the deployment and expansion are completed, the bag body 41 is located between the occupants P1 and P2 seated on the seats 13 and 14 for both vehicles. The rear lower end portion of the rear lower expansion portion 55 is located between the occupant P1 seated on the vehicle seat 13 and the center console box 15 (see FIG. 2). Therefore, the rear lower end portion of the rear lower expansion portion 55 is difficult to move toward the side wall portion 12 when the bag body 41 receives the upper body of the occupant P1 that falls toward the side wall portion 12 to which the impact is applied.

また、図１１に示すようにバッグ本体４１のうち、結合部４９と第２膨張厚み規制部５０との間の領域は、同第２膨張厚み規制部５０と固定部４６との間の領域よりも大きな膨張厚みで膨張し、第１外テザー８１を乗員側（運転席側）へ押圧する。バッグ本体４１に対しては、これを固定部４６側へ引っ張ろうとする張力が、第１外テザー８１を通じて加わるところ、バッグ本体４１のうち、結合部４９に対し第２膨張厚み規制部５０側の近傍となる箇所では、曲面状の膨張部分に沿う方向、この場合、後ろ側ほど乗員Ｐ１に近づく側（斜め後乗員側）へ引っ張ろうとする張力Ｆが加わる。バッグ本体４１のうち、結合部４９に対し第２膨張厚み規制部５０側の近傍となる箇所には、車幅方向のうち乗員側（運転席側）に向かう分力Ｆａが発生する。この分力Ｆａは、衝撃の加わった側壁部１２側へ移動しようとする乗員Ｐ１からバッグ本体４１が受ける外力Ｆ１を打ち消す反力として作用する。その結果、乗員Ｐ１から外力Ｆ１を受けてもバッグ本体４１を動きにくくし、衝撃の加わった側壁部１２側への乗員Ｐ１の移動を抑制し、同乗員Ｐ１の上半身に伝わる側方からの衝撃を緩和することができる。 Further, as shown in FIG. 11, in the bag main body 41, the region between the connecting portion 49 and the second expansion thickness regulating portion 50 is from the region between the second expansion thickness regulating portion 50 and the fixing portion 46. Also expands with a large expansion thickness, and presses the first outer tether 81 toward the occupant side (driver's seat side). When a tension for pulling the bag body 41 toward the fixing portion 46 is applied through the first outer tether 81, the bag main body 41 is on the side of the second expansion thickness regulating portion 50 with respect to the connecting portion 49. In the vicinity, tension F is applied in the direction along the curved expansion portion, in this case, the rear side is closer to the occupant P1 (diagonal rear occupant side). A component force Fa toward the occupant side (driver's seat side) in the vehicle width direction is generated at a portion of the bag body 41 near the joint portion 49 on the side of the second expansion thickness regulating portion 50. This component force Fa acts as a reaction force that cancels the external force F1 received by the bag body 41 from the occupant P1 trying to move to the side wall portion 12 to which the impact is applied. As a result, even if an external force F1 is received from the occupant P1, the bag body 41 is made difficult to move, the movement of the occupant P1 to the side wall portion 12 to which the impact is applied is suppressed, and the impact from the side transmitted to the upper body of the occupant P1. Can be alleviated.

また、結合部４９と第２膨張厚み規制部５０との間の領域は、上記のように大きな膨張厚みで膨張するが、この領域は、バッグ本体４１のうち乗員Ｐ１の肩部ＰＳと当接する箇所よりも固定部４６側に位置する。そのため、乗員Ｐ１の上半身のうち、最も幅方向の寸法の大きな箇所である肩部ＰＳと、バッグ本体４１の膨張厚みの大きな上記領域との干渉を抑制することができる。 Further, the region between the joint portion 49 and the second expansion thickness regulating portion 50 expands with a large expansion thickness as described above, and this region abuts on the shoulder portion PS of the occupant P1 in the bag body 41. It is located closer to the fixed portion 46 than the location. Therefore, it is possible to suppress interference between the shoulder portion PS, which is the portion of the upper body of the occupant P1 having the largest dimension in the width direction, and the above-mentioned region where the expansion thickness of the bag body 41 is large.

さらに、前上膨張部５６内の結合部４９よりも上方部分が展開及び膨張するときには、図１２に示すように第１内テザー７０が、同上方部分の車幅方向における膨張厚みを規制する。 Further, when the portion above the joint portion 49 in the front upper expansion portion 56 expands and expands, the first inner tether 70 regulates the expansion thickness of the upper portion in the vehicle width direction as shown in FIG.

乗員側布部４３及び反乗員側布部４４に対する第１内テザー７０の結合位置の関係で、乗員側布部４３の周長Ｌ２が反乗員側布部４４の周長Ｌ１よりも短く設定されている（図７参照）。このことから、第１内テザー７０の乗員側布部４３との結合箇所である結合部７６を支点として、上記上方部分が、図２及び図１２に示すように、上側ほど乗員側（運転席側）に位置するように屈曲（傾斜）した状態となる。前上膨張部５６の上記上方部分が頭部ＰＨに近づき、衝撃の加わった側壁部１２側への頭部ＰＨの動きをより一層規制し、乗員Ｐ１を衝撃から保護する性能を高めることができる。 Due to the relationship between the coupling position of the first inner tether 70 with respect to the occupant side cloth portion 43 and the anti-occupant side cloth portion 44, the peripheral length L2 of the occupant side cloth portion 43 is set shorter than the peripheral length L1 of the anti-occupant side cloth portion 44. (See Fig. 7). From this, the upper part is the occupant side (driver's seat) as shown in FIGS. 2 and 12, with the joint portion 76, which is the joint portion of the first inner tether 70 with the occupant side cloth portion 43, as a fulcrum. It will be in a bent (tilted) state so that it is located on the side). The upper portion of the front upper expansion portion 56 approaches the head PH, further restricts the movement of the head PH toward the side wall portion 12 to which an impact is applied, and can enhance the performance of protecting the occupant P1 from the impact. ..

本実施形態によると、上記以外にも、次の効果が得られる。
・乗員側布部４３及び反乗員側布部４４が、結合部４９によって、互いに接触させられた状態で結合される本実施形態にあって、第１外テザー８１の前上端部が、結合部４９によって乗員側布部４３に結合されている。 According to this embodiment, the following effects can be obtained in addition to the above.
In the present embodiment in which the occupant-side cloth portion 43 and the anti-occupant-side cloth portion 44 are joined in a state of being in contact with each other by the joint portion 49, the front upper end portion of the first outer tether 81 is the joint portion. It is connected to the occupant side cloth portion 43 by 49.

そのため、結合部４９が設けられることで、乗員側布部４３及び反乗員側布部４４の結合と、第１外テザー８１の前上端部の乗員側布部４３に対する結合とが同時に行われる。従って、これらの結合が別々に行われる場合に比べ、エアバッグ４０、ひいては側突用エアバッグ装置の製造工数が少なくてすむ。 Therefore, by providing the connecting portion 49, the coupling of the occupant-side cloth portion 43 and the anti-occupant-side cloth portion 44 and the coupling of the front upper end portion of the first outer tether 81 to the occupant-side cloth portion 43 are performed at the same time. Therefore, the man-hours for manufacturing the airbag 40 and the airbag device for side collision can be reduced as compared with the case where these couplings are performed separately.

なお、上記実施形態は、これを以下のように変更した変形例として実施することもできる。
＜第１膨張厚み規制部について＞
・第１膨張厚み規制部が、上記実施形態の結合部４９に代えて、図１３に示すように、バッグ本体４１内に配置されて、乗員側布部４３及び反乗員側布部４４の間に架け渡された内テザー８６によって構成されてもよい。図１３の変形例では、内テザー８６が、バッグ本体４１と同様の素材からなり、かつ互いに独立した一対の布部８７を備えている。乗員側（運転席側）の布部８７は、これに隣接する乗員側布部４３に対し、同布部８７の一方の端部に設けられた結合部８８によって結合されている。同様に、反乗員側（助手席側）の布部８７は、これに隣接する反乗員側布部４４に対し、同布部８７の一方の端部に設けられた結合部８９によって結合されている。両布部８７は、結合部８８，８９の設けられた端部とは反対側の端部において結合部９１によって相互に結合されている。こうした結合態様により、第１膨張厚み規制部によって規制されるバッグ本体４１の膨張厚みは、上記実施形態よりも大きくなる。 It should be noted that the above embodiment can also be implemented as a modified example in which this is modified as follows.
<About the 1st expansion thickness regulation part>
As shown in FIG. 13, the first expansion thickness regulating portion is arranged in the bag main body 41 instead of the connecting portion 49 of the above embodiment, and is between the occupant side cloth portion 43 and the anti-occupant side cloth portion 44. It may be composed of an inner tether 86 bridged to the inner tether 86. In the modified example of FIG. 13, the inner tether 86 is made of the same material as the bag body 41 and includes a pair of cloth portions 87 that are independent of each other. The cloth portion 87 on the occupant side (driver's seat side) is connected to the cloth portion 43 on the occupant side adjacent to the cloth portion 87 by a connecting portion 88 provided at one end of the cloth portion 87. Similarly, the cloth portion 87 on the anti-occupant side (passenger seat side) is connected to the cloth portion 44 on the anti-occupant side adjacent thereto by a connecting portion 89 provided at one end of the cloth portion 87. There is. Both cloth portions 87 are connected to each other by a coupling portion 91 at an end portion opposite to the end portion where the coupling portions 88 and 89 are provided. Due to such a coupling mode, the expansion thickness of the bag body 41 regulated by the first expansion thickness regulating unit is larger than that of the above embodiment.

この場合、第１外テザー８１の前上端部は、上記結合部８８によって乗員側布部４３に結合されてもよい。
なお、図１３では、上記実施形態で説明したものと同様の要素には同一の符号が付されている。 In this case, the front upper end portion of the first outer tether 81 may be coupled to the occupant side cloth portion 43 by the coupling portion 88.
In FIG. 13, the same elements as those described in the above embodiment are designated by the same reference numerals.

このようにすると、バッグ本体４１が展開及び膨張したとき、内テザー８６が緊張状態となる。内テザー８６が架け渡された箇所では、バッグ本体４１の膨張厚みが規制される。 In this way, when the bag body 41 is expanded and expanded, the inner tether 86 is in a tense state. At the location where the inner tether 86 is laid, the expansion thickness of the bag body 41 is restricted.

また、内テザー８６の乗員側布部４３に対する結合と、第１外テザー８１の前上端部の乗員側布部４３に対する結合とが、共通の結合部８８によって行われる。そのため、両結合が別々の結合部によって行われる場合に比べ、製造工数が少なくてすむ効果がある。 Further, the coupling of the inner tether 86 to the occupant-side cloth portion 43 and the coupling of the front upper end portion of the first outer tether 81 to the occupant-side cloth portion 43 are performed by the common coupling portion 88. Therefore, there is an effect that the manufacturing man-hours can be reduced as compared with the case where both couplings are performed by separate coupling portions.

＜バッグ本体４１について＞
・バッグ本体４１の後下部に設定される固定部４６は、車両用シート１３，１４のうち隣の車両用シート１４，１３に近い側の側部であることを前提とし、サイドフレーム部２１と同様に強度の高い部材に固定されてもよい。また、固定部４６は、車両用シート１３，１４の上記側部の近傍に位置する部材、例えばセンターコンソールボックス１５に固定されてもよい。 <About the bag body 41>
-The fixing portion 46 set at the rear lower portion of the bag body 41 is assumed to be the side portion of the vehicle seats 13 and 14 on the side closer to the adjacent vehicle seats 14 and 13, and is combined with the side frame portion 21. Similarly, it may be fixed to a member having high strength. Further, the fixing portion 46 may be fixed to a member located in the vicinity of the side portions of the vehicle seats 13 and 14, for example, the center console box 15.

・バッグ本体４１は、上記実施形態のようにその略全体が膨張するものであってもよいが、膨張用ガスＧ１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。 The bag main body 41 may be expanded substantially as a whole as in the above embodiment, but has a non-expandable portion that is not supplied with the expansion gas G1 and does not expand. You may.

＜第２膨張厚み規制部５０について＞
・第２膨張厚み規制部５０は、布部５１を用いることなく、上記実施形態における結合部４９と同様に、乗員側布部４３及び反乗員側布部４４を互いに接触させた状態で縫合等の手段で結合することにより構成されてもよい。 <About the second expansion thickness control unit 50>
The second expansion thickness regulating portion 50 is sutured or the like in a state where the occupant side cloth portion 43 and the anti-occupant side cloth portion 44 are in contact with each other, as in the joint portion 49 in the above embodiment, without using the cloth portion 51. It may be configured by combining by the means of.

＜第１外テザー８１、第２外テザー８２について＞
・第１外テザー８１の他端部としての前上端部は、第１膨張厚み規制部としての結合部４９とは異なる結合部によって乗員側布部４３のうち、乗員Ｐ１の肩部ＰＳに当接する箇所に結合されてもよい。 <About the first outer tether 81 and the second outer tether 82>
The front upper end portion as the other end of the first outer tether 81 hits the shoulder portion PS of the occupant P1 among the occupant side cloth portions 43 by a joint portion different from the joint portion 49 as the first expansion thickness regulating portion. It may be combined at the point of contact.

・第２外テザー８２の他端部としての前端部は、周縁結合部４５とは異なる結合部によってバッグ本体４１の前端部に結合されてもよい。
・第１外テザー８１の後下端部と、第２外テザー８２の後端部とは、上記実施形態のように、バッグ本体４１における固定部４６の同一の箇所（上側のボルト３３）に取り付けられてもよいが、同固定部４６の互いに異なる箇所に取り付けられてもよい。 The front end portion of the second outer tether 82 as the other end may be coupled to the front end portion of the bag body 41 by a coupling portion different from that of the peripheral coupling portion 45.
The rear lower end portion of the first outer tether 81 and the rear end portion of the second outer tether 82 are attached to the same portion (upper bolt 33) of the fixing portion 46 in the bag body 41 as in the above embodiment. However, they may be attached to different parts of the fixing portion 46.

＜その他＞
・制御装置８５は、車両１０に対し、側方からの衝撃が加わることを予測した場合に、インフレータ３１に作動信号を出力する仕様に変更されてもよい。 <Others>
The control device 85 may be changed to a specification that outputs an operation signal to the inflator 31 when it is predicted that an impact from the side will be applied to the vehicle 10.

・上記側突用エアバッグ装置は、３つ以上の車両用シートが車幅方向に並設された車両にも適用可能である。この場合、車両の側方から側壁部に加わる衝撃に応じ、隣り合う車両用シート間でエアバッグ本体を展開及び膨張させる。 -The above-mentioned airbag device for side collision can also be applied to a vehicle in which three or more vehicle seats are arranged side by side in the vehicle width direction. In this case, the airbag body is deployed and expanded between adjacent vehicle seats in response to an impact applied to the side wall portion from the side of the vehicle.

・上記側突用エアバッグ装置が適用される車両には、自家用車に限らず各種産業車両も含まれる。
・上記側突用エアバッグ装置は、車両以外の乗物、例えば航空機、船舶等に装備されて、乗物用シートに着座している乗員を側突による衝撃から保護する側突用エアバッグ装置にも適用可能である。 -Vehicles to which the above-mentioned side collision airbag device is applied include not only private vehicles but also various industrial vehicles.
-The above-mentioned airbag device for side impact is also installed in vehicles other than vehicles, such as aircraft and ships, to protect the occupants sitting on the vehicle seat from the impact of side impact. Applicable.

１０…車両（乗物）、１１，１２…側壁部、１３，１４…車両用シート（乗物用シート）、４０…エアバッグ、４１…バッグ本体、４３…乗員側布部、４４…反乗員側布部、４６…固定部、４９…結合部（第１膨張厚み規制部）、５０…第２膨張厚み規制部、７０…第１内テザー、８１…第１外テザー、８２…第２外テザー、８６…内テザー（第１膨張厚み規制部）、Ｇ１…膨張用ガス、Ｐ１，Ｐ２…乗員、ＰＳ…肩部、Ｌ１，Ｌ２，Ｌ４，Ｌ６…周長、Ｌ３，Ｌ５…長さ。 10 ... Vehicle (vehicle), 11, 12 ... Side wall, 13, 14 ... Vehicle seat (vehicle seat), 40 ... Airbag, 41 ... Bag body, 43 ... Crew side cloth, 44 ... Anti-passenger side cloth Part, 46 ... Fixed part, 49 ... Joint part (first expansion thickness regulating part), 50 ... Second expansion thickness regulating part, 70 ... First inner tether, 81 ... First outer tether, 82 ... Second outer tether, 86 ... Inner tether (first expansion thickness regulating part), G1 ... Expansion gas, P1, P2 ... Crew, PS ... Shoulder, L1, L2, L4, L6 ... Circumferential length, L3, L5 ... Length.

Claims (5)

複数の乗物用シートが幅方向に並設された乗物に対し、自身の後下部に設定した固定部において固定されるバッグ本体を有するエアバッグを備え、前記乗物の側壁部に対し側方から加わる衝撃に応じて供給される膨張用ガスにより、隣り合う乗物用シート間で前記バッグ本体を、前記固定部から斜め前上方へ向けて展開及び膨張させ、前記側壁部から遠い側の乗物用シートに着座している乗員を衝撃から保護する側突用エアバッグ装置であり、
前記バッグ本体の展開及び膨張に伴い同バッグ本体よりも乗員側で緊張状態になる第１外テザー及び第２外テザーをさらに備え、
前記第１外テザー及び前記第２外テザーの各一端部は前記固定部に取り付けられ、前記第１外テザーの他端部は、前記バッグ本体のうち、前記乗員の肩部と当接する箇所に取り付けられ、前記第２外テザーの前記他端部は前記バッグ本体の前端部に取り付けられ、
前記バッグ本体には、前記第１外テザーの前記他端部が取り付けられた箇所での膨張厚みを規制する第１膨張厚み規制部と、前記第１膨張厚み規制部及び前記固定部の間での膨張厚みを規制する第２膨張厚み規制部とが設けられており、前記第１膨張厚み規制部及び前記第２膨張厚み規制部の間での膨張厚みが、前記第２膨張厚み規制部及び前記固定部の間での膨張厚みよりも大きく設定されている側突用エアバッグ装置。 For a vehicle in which a plurality of vehicle seats are arranged side by side in the width direction, an airbag having a bag body to be fixed by a fixing portion set at the rear lower portion of the vehicle is provided, and the airbag is added to the side wall portion of the vehicle from the side. The expansion gas supplied in response to an impact expands and expands the bag body diagonally forward and upward from the fixed portion between adjacent vehicle seats, and the vehicle seat on the side far from the side wall portion. It is an airbag device for side collision that protects the seated occupant from impact.
Further equipped with a first outer tether and a second outer tether that become tense on the occupant side of the bag body as the bag body expands and expands.
One end of each of the first outer tether and the second outer tether is attached to the fixing portion, and the other end of the first outer tether is located at a portion of the bag body that abuts on the shoulder of the occupant. Attached, the other end of the second outer tether is attached to the front end of the bag body.
In the bag body, between the first expansion thickness regulating portion that regulates the expansion thickness at the position where the other end of the first outer tether is attached, the first expansion thickness regulating portion, and the fixing portion. A second expansion thickness regulating portion is provided to regulate the expansion thickness of the above, and the expansion thickness between the first expansion thickness regulating portion and the second expansion thickness regulating portion is the second expansion thickness regulating portion and the second expansion thickness regulating portion. A side collision airbag device set to be larger than the expansion thickness between the fixed portions. 前記第１外テザーにおける前記一端部と前記他端部との間の長さは、前記バッグ本体のうち前記第１外テザーの前記他端部が取り付けられた箇所と前記固定部との間の周長よりも短く設定され、
前記第２外テザーにおける前記一端部と前記他端部との間の長さは、前記バッグ本体のうち前記第２外テザーの前記他端部が取り付けられた前端部と前記固定部との間の周長よりも短く設定されている請求項１に記載の側突用エアバッグ装置。 The length between the one end portion and the other end portion of the first outer tether is the distance between the portion of the bag body to which the other end portion of the first outer tether is attached and the fixing portion. Set shorter than the circumference,
The length between the one end and the other end of the second outer tether is the distance between the front end to which the other end of the second outer tether is attached and the fixing portion of the bag body. The airbag device for side collision according to claim 1, which is set shorter than the peripheral length of the above. 前記バッグ本体は、前記乗員に近い側の乗員側布部と、同乗員から遠い側の反乗員側布部とを備え、
前記第１膨張厚み規制部は、前記乗員側布部及び前記反乗員側布部を互いに接触させた状態で結合しており、
前記第１外テザーの前記他端部は、前記第１膨張厚み規制部により前記乗員側布部に結合されている請求項１又は２に記載の側突用エアバッグ装置。 The bag body includes a occupant-side cloth portion on the side closer to the occupant and an anti-occupant-side cloth portion on the side far from the occupant.
The first expansion thickness regulating portion is coupled with the occupant-side cloth portion and the anti-occupant-side cloth portion in contact with each other.
The airbag device for side collision according to claim 1 or 2, wherein the other end of the first outer tether is coupled to the occupant side cloth portion by the first expansion thickness regulating portion. 前記バッグ本体は、前記乗員に近い側の乗員側布部と、同乗員から遠い側の反乗員側布部とを備え、
前記第１膨張厚み規制部は、前記バッグ本体内に配置されて、前記乗員側布部及び前記反乗員側布部の間に架け渡された内テザーにより構成され、
前記内テザーの前記乗員側布部側の端部と、前記第１外テザーの前記他端部とは、共通の結合部により前記乗員側布部に結合されている請求項１又は２に記載の側突用エアバッグ装置。 The bag body includes a occupant-side cloth portion on the side closer to the occupant and an anti-occupant-side cloth portion on the side far from the occupant.
The first expansion thickness regulating portion is arranged in the bag body and is composed of an inner tether spanned between the occupant-side cloth portion and the anti-occupant-side cloth portion.
The first or second aspect of claim 1 or 2, wherein the end portion of the inner tether on the occupant side cloth portion and the other end portion of the first outer tether are connected to the occupant side cloth portion by a common joint portion. Airbag device for side collision. 前記バッグ本体は、前記乗員に近い側の乗員側布部と、同乗員から遠い側の反乗員側布部とを備え、
前記バッグ本体内の前記第１膨張厚み規制部よりも上方には第１内テザーが配置されており、
前記第１内テザーの上下方向における両端部は、前記反乗員側布部において上下方向に離間した箇所に結合され、
前記第１内テザーの上下方向における中間部は前記乗員側布部に結合されており、
前記第１内テザーの上端部が結合された箇所と、下端部が結合された箇所との間における前記反乗員側布部の周長は、前記第１内テザーの中間部が結合された箇所における前記乗員側布部の上下方向の周長よりも長く設定されている請求項１～４のいずれか１項に記載の側突用エアバッグ装置。 The bag body includes a occupant-side cloth portion on the side closer to the occupant and an anti-occupant-side cloth portion on the side far from the occupant.
The first inner tether is arranged above the first expansion thickness regulating portion in the bag body.
Both ends of the first inner tether in the vertical direction are coupled to locations separated in the vertical direction in the cloth portion on the anti-passenger side.
The intermediate portion of the first inner tether in the vertical direction is connected to the occupant-side cloth portion.
The circumference of the anti-crew side cloth portion between the portion where the upper end portion of the first inner tether is connected and the portion where the lower end portion is connected is the location where the intermediate portion of the first inner tether is connected. The airbag device for side collision according to any one of claims 1 to 4, which is set longer than the vertical peripheral length of the occupant-side cloth portion in the above.
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