JP4254676B2

JP4254676B2 - Crew restraint system

Info

Publication number: JP4254676B2
Application number: JP2004284354A
Authority: JP
Inventors: 道夫井上; 利則棚瀬
Original assignee: Toyoda Gosei Co Ltd
Current assignee: Toyoda Gosei Co Ltd
Priority date: 2004-09-29
Filing date: 2004-09-29
Publication date: 2009-04-15
Anticipated expiration: 2024-09-29
Also published as: JP2006096161A

Description

本発明は、頭部保護エアバッグを利用し、車両の窓の車内側を遮蔽して、車内側に乗員を拘束可能な乗員拘束装置に関する。 The present invention relates to an occupant restraint device that uses a head protection airbag to shield an interior of a vehicle window and restrain an occupant inside the vehicle.

従来、車両の窓の車内側を覆うように膨張を完了させる頭部保護エアバッグを備えたエアバッグ装置では、乗員を拘束できるように、前後方向に沿う張力（テンション）を生じさせて、エアバッグの膨張を完了させていた（例えば、特許文献１参照）。 Conventionally, in an airbag apparatus having a head protection airbag that completes inflation so as to cover the inside of a vehicle window, a tension (tension) along the front-rear direction is generated so that the occupant can be restrained. The expansion of the bag was completed (see, for example, Patent Document 1).

このような張力は、エアバッグに、膨張用ガスの流入時に前後方向の寸法を狭めて膨張を完了させるための、前後方向に並設させた複数のセル、を設け、かつ、エアバッグの前端下部と後端上部とを、窓の前縁下部と上縁後部とに取り付けて、生じさせていた。 Such tension is provided in the airbag with a plurality of cells arranged in parallel in the front-rear direction to complete the expansion by narrowing the dimension in the front-rear direction when the inflation gas flows in, and the front end of the airbag The lower part and the upper part of the rear end were attached to the lower part of the front edge of the window and the rear part of the upper edge to generate the same.

そして、エアバッグの前後方向に沿う張力が生じれば、乗員が車外側に移動しようとしても、エアバッグが、その乗員の移動を規制でき、乗員を車内側に拘束できることとなる。
特開平１０−２７８７２３号公報 And if the tension | tensile_strength along the front-back direction of an airbag arises, even if a passenger | crew tries to move to a vehicle outer side, the airbag can control the movement of the passenger | crew and can restrain a passenger | crew to the vehicle inner side.
JP-A-10-278723

しかし、従来のエアバッグでは、前端下部と後端上部とを、窓の前縁下部と上縁後部とに取り付けていたことから、展開膨張完了時のエアバッグにおける前端下部から斜め上方の後端上部にかけてのラインに、張力が発生して、膨張完了時のエアバッグの前端下部と後端下部とを連結する部位自体、すなわち、膨張完了時のエアバッグの前後方向に沿う下縁自体、に、前後方向に沿う張力を生じさせることができず、車内側に乗員を拘束する性能に関し、改善の余地があった。 However, in the conventional airbag, the front end lower part and the rear end upper part are attached to the front edge lower part and the upper edge rear part of the window. When tension is generated in the line extending to the upper part, the part itself connecting the lower front end and the lower rear end of the airbag when inflation is completed, that is, the lower edge itself along the front-rear direction of the airbag when inflation is completed The tension along the front-rear direction could not be generated, and there was room for improvement regarding the performance of restraining the occupant inside the vehicle.

ちなみに、エアバッグの前端下部と後端下部とを、共に、窓の前後の縁の下部側に固定することが考えられるが、このような状態では、窓の上縁側にエアバッグを折り畳んで収納する際、エアバッグの下縁における前後方向の長さが、十分、長くないことから、収納できず、逆に、エアバッグの下縁における前後方向の長さが、十分、長ければ、窓の上縁側にエアバッグを収納できるものの、エアバッグが、複数のセルを膨張させても、エアバッグの下縁自体に、前後方向に沿う張力を発生できなくなってしまう。 By the way, it is conceivable to fix the front end lower part and rear end lower part of the airbag together to the lower side of the front and rear edges of the window. In such a state, the airbag is folded and stored on the upper edge side of the window. In this case, since the length in the front-rear direction at the lower edge of the airbag is not sufficiently long, it cannot be stored. Conversely, if the length in the front-rear direction at the lower edge of the airbag is long enough, Although the airbag can be stored on the upper edge side, even if the airbag inflates a plurality of cells, it is impossible to generate tension along the front-rear direction on the lower edge of the airbag itself.

また、従来のエアバッグでは、車両の横転に伴ってセルが傷付けられてガス漏れを生じさせる等の事態を招いて、内圧が低下すれば、張力を維持できなくなってしまう。 In addition, in the conventional airbag, if the internal pressure is lowered due to a situation such as a cell being damaged and causing gas leakage as the vehicle rolls over, the tension cannot be maintained.

本発明は、上述の課題を解決するものであり、エアバッグを窓の上縁側に収納できるとともに、膨張完了後に内圧が低下しても、エアバッグの下縁自体に生じた前後方向に沿う張力を、維持可能な乗員拘束装置を提供することを目的とする。 The present invention solves the above-described problem, and can accommodate the airbag on the upper edge side of the window, and the tension along the front-rear direction generated on the lower edge of the airbag itself even when the internal pressure is reduced after the inflation is completed. An object of the present invention is to provide an occupant restraint device capable of maintaining the above.

本発明に係る乗員拘束装置は、車両の窓の上縁側に折り畳まれて収納され、膨張用ガスの流入時に、窓の車内側を覆い可能に、窓の上縁側から下方に展開膨張する頭部保護エアバッグを備えるとともに、
頭部保護エアバッグが、膨張用ガスの流入時に前後方向の寸法を狭めて膨張を完了させるための、前後方向に並設させた複数のセル、を備えて構成される乗員拘束装置であって、
展開膨張完了時のエアバッグの下縁における前後方向の一方の端部が、固定側端部として、窓の下縁の前後方向における端部付近に、取り付けられ、
展開膨張完了時のエアバッグの下縁における前後方向の他方の端部が、移動側端部として、窓の周縁におけるピラー部に配設された牽引装置と、連結され、
牽引装置が、
窓の上縁付近から下縁付近までの領域で、相互に軸方向を平行として略上下方向に沿って配設されるねじ棒、及び、ガイドロッドと、
ねじ棒に螺合するねじ孔、及び、ガイドロッドを挿通させるガイド孔、を有し、かつ、エアバッグの移動側端部と連結される移動片と、
ねじ棒を回転駆動させる駆動源と、
を備えて、構成され、
ねじ棒の回転駆動時、窓の上縁側に収納したエアバッグの移動側端部を、移動片とともに下降させて、内圧低下時のエアバッグの下縁における固定側・移動側端部間に、前後方向に沿う張力を生じさせるように、配設されていることを特徴とする。 The occupant restraint device according to the present invention is folded and stored on the upper edge side of a vehicle window, and expands and expands downward from the upper edge side of the window so as to cover the inside of the window when inflating gas flows. With a protective airbag,
A head restraint airbag comprising a plurality of cells juxtaposed in the front-rear direction for narrowing the dimension in the front-rear direction when inflation gas flows in to complete the inflation, ,
One end in the front-rear direction on the lower edge of the airbag when deployment is completed is attached as a fixed-side end near the end in the front-rear direction of the lower edge of the window,
The other end in the front-rear direction on the lower edge of the airbag when deployment and inflation are completed is connected to the pulling device disposed on the pillar portion on the periphery of the window as the moving side end,
The traction device
A screw rod and a guide rod which are arranged along the vertical direction with the axial direction parallel to each other in the region from the vicinity of the upper edge of the window to the vicinity of the lower edge;
A moving piece connected to the moving side end of the airbag, and having a screw hole screwed into the screw rod, and a guide hole through which the guide rod is inserted;
A drive source for rotationally driving the screw rod;
Comprising
When the screw rod is driven to rotate, the moving side end of the airbag housed on the upper edge side of the window is lowered together with the moving piece, between the fixed side and the moving side end of the lower edge of the airbag when the internal pressure is reduced. It is arrange | positioned so that the tension | tensile_strength along the front-back direction may be produced.

本発明に係る乗員拘束装置では、作動時、複数のセルに膨張用ガスを流入させて、頭部保護エアバッグが膨張を完了させれば、セルによって、クッション性良く、乗員の保護が可能となるとともに、前後方向に沿う張力が発生する。 In the occupant restraint device according to the present invention, when the inflation gas is allowed to flow into a plurality of cells and the head protection airbag is completely inflated during operation, the occupant can be protected with good cushioning properties by the cells. At the same time, a tension along the front-rear direction is generated.

また、牽引装置の駆動源が、作動すれば、ねじ棒を回転駆動させることから、窓の上縁側に収納したエアバッグの移動側端部を、移動片とともに下降させて、エアバッグの下縁における固定側・移動側端部間に、前後方向に沿う張力を生じさせることとなる。そして、この牽引装置は、セルと無関係に、エアバッグの下縁に張力を発生させることができることから、エアバッグの展開膨張完了後に、セルが傷付けられてガス漏れを生じさせる等して、エアバッグの内圧が低下しても、エアバッグの下縁自体に生じた前後方向に沿う張力を、維持することができて、エアバッグにおける乗員を車内側に拘束する性能を、低下させない。 In addition, when the drive source of the traction device is activated, the screw rod is driven to rotate, so the moving side end of the airbag housed on the upper edge side of the window is lowered together with the moving piece to lower the lower edge of the airbag. Thus, a tension along the front-rear direction is generated between the fixed side and moving side end portions. Since this traction device can generate tension at the lower edge of the airbag regardless of the cell, the cell is damaged after the airbag has been deployed and inflated, causing gas leakage, etc. Even if the internal pressure of the bag decreases, the tension along the front-rear direction generated at the lower edge of the airbag itself can be maintained, and the performance of restraining the passenger in the airbag inside the vehicle does not decrease.

勿論、エアバッグの移動側端部と連結される移動片を、下降可能に、窓の上縁側に配置させておけば、エアバッグを、窓の周縁における窓の上縁側に、容易に収納することができる。 Of course, if the moving piece connected to the moving side end portion of the airbag is disposed on the upper edge side of the window so as to be lowered, the airbag can be easily stored on the upper edge side of the window at the peripheral edge of the window. be able to.

したがって、本発明に係る乗員拘束装置では、エアバッグを窓の上縁側に収納できるとともに、膨張完了後に内圧が低下しても、エアバッグの下縁自体に生じている前後方向に沿う張力を、維持することができる。 Therefore, in the occupant restraint device according to the present invention, the airbag can be stored on the upper edge side of the window, and the tension along the front-rear direction generated on the lower edge of the airbag itself even when the internal pressure is reduced after the completion of the inflation, Can be maintained.

なお、牽引装置のねじ棒を回転させる駆動源は、エアバッグの展開膨張完了後において、車両の横転時等にセルが傷付けられてガス漏れを生じさせ、エアバッグの内圧が低下するまでに、移動片を窓の下縁側に移動させておけばよいことから、エアバッグの展開時の当初から始動しなくとも、エアバッグの展開途中や展開膨張完了時、あるいは、展開膨張完了後に、始動してもよい。 The drive source that rotates the screw rod of the traction device is a gas source that is damaged when the vehicle rolls over after the airbag has been deployed and inflated until the internal pressure of the airbag decreases. Since the moving piece has only to be moved to the lower edge of the window, it can be started during the deployment of the airbag, at the completion of deployment, or after the completion of deployment. May be.

また、牽引装置のねじ棒を回転させる駆動源は、ねじ棒を回転駆動可能であれば、油圧・水圧・空気圧、あるいは、インフレーター等の膨張するガス圧を発生させる場合を含めた流体圧や電気を利用したモータ、復元時の付勢力を利用するばね等を、使用することができる。さらに、エアバッグの展開膨張完了後において、セルのガス漏れ等による内圧の低下時、エアバッグの下縁自体に前後方向の張力を生じさせていればよいことから、膨張開始から膨張完了までを短い時間とすることが望まれる頭部保護エアバッグと相違して、駆動源は、移動片の移動開始から移動完了までに、ある程度の時間がかかるような遅い速度の作動であってもよい。 In addition, the drive source for rotating the screw rod of the traction device may be hydraulic pressure, hydraulic pressure, pneumatic pressure, fluid pressure including electric pressure for generating expanding gas pressure such as an inflator, etc. It is possible to use a motor utilizing the spring, a spring utilizing the biasing force at the time of restoration, and the like. Furthermore, after the airbag has been deployed and inflated, when the internal pressure decreases due to cell gas leakage, etc., it is only necessary to generate a longitudinal tension on the lower edge of the airbag itself. Unlike the head protection airbag that is desired to have a short time, the drive source may be operated at a low speed such that it takes some time from the start of movement of the moving piece to the completion of movement.

さらにまた、牽引装置における移動側端部に連結される移動片は、ねじ送りされるように、ねじ棒に螺合しており、ねじ棒が所定方向に回転しない限り、上方移動が規制されることから、モータを回転駆動し続けなくとも、すなわち、モータを停止させておいても、エアバッグの下縁側に発生させた張力を維持できる。また、移動片が、略上下方向に沿うように配設されたガイドロッドとねじ棒とに沿って、下降移動することから、エアバッグの移動側端部付近を、不必要に車内側に突出させること無く、下降させることができる。 Furthermore, the moving piece connected to the moving side end portion of the traction device is screwed to the screw rod so as to be screwed, and the upward movement is restricted unless the screw rod rotates in a predetermined direction. Therefore, the tension generated on the lower edge side of the airbag can be maintained without continuously driving the motor, that is, even when the motor is stopped. Further, since the moving piece moves downward along the guide rod and the screw rod arranged so as to be substantially along the vertical direction, the vicinity of the moving side end portion of the airbag is unnecessarily projected to the inside of the vehicle. It can be lowered without causing

そして、本発明の乗員拘束装置では、エアバッグの固定側端部を、窓の下縁より下方に配置させるとともに、牽引装置における移動片を、エアバッグの移動側端部を窓の下縁より下方の位置まで移動させるように、配設することが、好ましい。このような構成では、作動完了時の固定側端部と移動側端部との間におけるエアバッグの下縁の全域が、窓の下縁より下方に配置されて、エアバッグが、窓の上縁から下縁までの全域を覆うこととなって、乗員の車内側への拘束性能を、一層、向上させることができる。 And in the passenger | crew restraint apparatus of this invention, while arrange | positioning the fixed side edge part of an airbag below the lower edge of a window, the moving piece in a traction device is arranged from the lower edge of a window. It is preferable to arrange so as to move to a lower position. In such a configuration, the entire region of the lower edge of the airbag between the fixed side end and the moving side end when the operation is completed is disposed below the lower edge of the window, and the airbag is positioned above the window. The entire area from the edge to the lower edge is covered, and the restraining performance of the passenger on the vehicle inner side can be further improved.

以下、本発明の一実施形態を図面に基づいて説明すると、図１に示すように、実施形態の乗員拘束装置Ｓは、頭部保護エアバッグ２０を、展開膨張完了時に、車両Ｖの窓（サイドウィンド）Ｗ１・Ｗ２・Ｗ３を覆い可能に、窓Ｗ１・Ｗ２・Ｗ３の上縁側のフロントピラー部ＦＰからルーフサイドレール部ＲＲのリヤピラー部ＲＰの上方付近までの範囲に、折り畳まれて、収納させている。なお、この車両Ｖは、フロントピラー部ＦＰとリヤピラー部ＲＰとの間に、略上下方向に沿って配設される二つの中間ピラー部Ｐ１・Ｐ２を配設させるとともに、各窓Ｗ１・Ｗ２・Ｗ３の車内側に座席を設けた三列シートタイプとして構成され、そして、展開膨張完了時のエアバッグ２０は、窓Ｗ１・Ｗ２・Ｗ３とともに、ピラー部Ｐ１・Ｐ２のピラーガーニッシュ５・６の車内側も、覆うように、構成されている。 DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, an occupant restraint device S according to an embodiment allows a head protection airbag 20 to be mounted on a window ( Side window) Can be folded and stored in the range from the front pillar part FP on the upper edge side of the window W1, W2, W3 to the vicinity of the upper part of the rear pillar part RP of the roof side rail part RR so as to cover the W1, W2, W3. I am letting. The vehicle V has two intermediate pillar portions P1 and P2 disposed substantially along the vertical direction between the front pillar portion FP and the rear pillar portion RP, and each window W1, W2, It is configured as a three-row seat type in which seats are provided on the inner side of the vehicle W3, and the airbag 20 at the time of completion of deployment is a vehicle with pillar garnishes 5 and 6 in the pillar portions P1 and P2, together with the windows W1, W2, and W3. The inside is also configured to cover.

乗員拘束装置Ｓは、図１に示すように、エアバッグ２０、エアバッグ２０に膨張用ガスを供給するインフレーター１０、取付ブラケット１１・１５、取付ボルト１２・１６、及び、牽引装置３６、を備えて構成されている。牽引装置３６は、ねじ棒４０、ガイドロッド４１、移動片４２、及び、ねじ棒４０を回転駆動させるための駆動源としてのモータ３７、を備えて構成されている。 As shown in FIG. 1, the occupant restraint device S includes an airbag 20, an inflator 10 that supplies inflation gas to the airbag 20, mounting brackets 11 and 15, mounting bolts 12 and 16, and a traction device 36. Configured. The traction device 36 includes a screw rod 40, a guide rod 41, a moving piece 42, and a motor 37 as a drive source for driving the screw rod 40 to rotate.

折り畳まれたエアバッグ２０とインフレーター１０とは、車両Ｖへの搭載時に、車内側をエアバッグカバー１８に覆われて収納されている。エアバッグカバー１８は、実施形態の場合、フロントピラー部ＦＰの車内側を覆うフロントピラーガーニッシュ３の下縁３ａと、ルーフサイドレール部ＲＲの車内側を覆うルーフヘッドライニング４の下縁４ａと、から構成されている。フロントピラーガーニッシュ３やルーフヘッドライニング４は、合成樹脂製として、図示しない取付手段によって、フロントピラー部ＦＰやルーフサイドレール部ＲＲにおけるボディ１側の部材であるインナパネル２の車内側に、取り付けられている。そして、これらの下縁３ａ・４ａから構成されるエアバッグカバー１８は、展開膨張時のエアバッグ２０を突出可能に、エアバッグ２０に押されて、下端３ａ・４ａ側を車内側に開くように、構成されている。 The folded airbag 20 and the inflator 10 are housed and covered with the airbag cover 18 when the vehicle is mounted on the vehicle V. In the embodiment, the airbag cover 18 includes a lower edge 3a of the front pillar garnish 3 that covers the vehicle interior side of the front pillar portion FP, a lower edge 4a of the roof head lining 4 that covers the vehicle interior side of the roof side rail portion RR, It is composed of The front pillar garnish 3 and the roof head lining 4 are made of synthetic resin and are attached to the inner side of the inner panel 2 that is a member on the body 1 side of the front pillar portion FP and the roof side rail portion RR by attachment means (not shown). ing. The airbag cover 18 composed of the lower edges 3a and 4a is pushed by the airbag 20 so that the airbag 20 can be protruded when deployed and inflated so that the lower ends 3a and 4a are opened to the inside of the vehicle. It is configured.

インフレーター１０は、略円柱状とされて、先端（前端）側に、膨張用ガスを吐出可能な図示しないガス吐出口が、配設されている。そして、このインフレーター１０は、ガス吐出口付近を含めた先端付近をエアバッグ２０の接続口部２６に挿入させ、接続口部２６の後端付近に外装されるクランプ１３を利用して、エアバッグ２０の接続口部２６に連結されている。また、インフレーター１０は、インフレーター１０を保持する取付ブラケット１１と、取付ブラケット１１をボディ１側のインナパネル２に固定するための取付ボルト１２と、を利用して、インナパネル２に取り付けられている。 The inflator 10 has a substantially columnar shape, and a gas discharge port (not shown) capable of discharging an inflating gas is disposed on the tip (front end) side. Then, the inflator 10 inserts the vicinity of the tip including the vicinity of the gas discharge port into the connection port portion 26 of the airbag 20, and uses the clamp 13 that is externally installed near the rear end of the connection port portion 26. 20 connection ports 26 are connected. The inflator 10 is attached to the inner panel 2 using a mounting bracket 11 that holds the inflator 10 and a mounting bolt 12 that fixes the mounting bracket 11 to the inner panel 2 on the body 1 side. .

なお、このインフレーター１０の車両Ｖへの搭載は、インフレーター１０とエアバッグ２０とを組み付け、さらに、移動片４２を介在させて、エアバッグ２０に牽引装置３６を連結させた状態の組付体として、行なわれる。 The inflator 10 is mounted on the vehicle V as an assembly in a state where the inflator 10 and the airbag 20 are assembled, and the movable piece 42 is interposed to connect the traction device 36 to the airbag 20. Done.

エアバッグ２０は、図４に示すように、ポリアミド糸やポリエステル糸等を使用した袋織りによって形成され、膨張用ガスＧを流入させて車内側壁部２１ａと車外側壁部２１ｂとを離すように膨張するガス流入部２１と、壁部２１ａ・２１ｂ相互を結合させるように形成されて、ガスＧを流入させない非流入部２８と、を備えて構成されている。ガス流入部２１は、保護膨張部２２、連通部２５、及び、接続口部２６、を備えて構成され、非流入部２８は、周縁部２９、取付部３０、板状部３１・３２・３３、及び、区画部３４、を備えて構成されている。 As shown in FIG. 4, the airbag 20 is formed by bag weaving using polyamide yarn, polyester yarn, or the like, so that the inflation gas G is introduced to separate the vehicle interior side wall portion 21a and the vehicle exterior wall portion 21b. The gas inflow part 21 which expand | swells and the non-inflow part 28 which is formed so that wall part 21a * 21b may couple | bond together and does not allow the gas G to flow in are comprised. The gas inflow portion 21 includes a protective expansion portion 22, a communication portion 25, and a connection port portion 26, and the non-inflow portion 28 includes a peripheral edge portion 29, an attachment portion 30, and plate-like portions 31, 32, and 33. , And a partition section 34.

ガス流入部２１の保護膨張部２２は、エアバッグ２０の展開膨張完了時に、前席の側方の窓Ｗ１を覆う前保護部２３と、二列目の座席の側方の窓Ｗ２を覆う後保護部２４と、を備えている。また、連通部２５は、エアバッグ２０の上縁２０ａ側で前後方向に沿って延びて、前保護部２３と後保護部２４との上方を連結するように、配置されている。さらに、接続口部２６は、エアバッグ２０の上縁２０ａ側における前後方向の中央付近から上方に延びるように配置されて、インフレーター１０からの膨張用ガスＧを連通部２５や保護膨張部２２内に導入できるように、配設されている。 The protective inflating portion 22 of the gas inflow portion 21 is configured to cover the front protecting portion 23 that covers the side window W1 of the front seat and the side window W2 of the second row of seats when the airbag 20 is completely deployed and inflated. And a protection unit 24. Further, the communication part 25 is arranged so as to extend along the front-rear direction on the upper edge 20 a side of the airbag 20 and to connect the upper part of the front protection part 23 and the rear protection part 24. Further, the connection port portion 26 is disposed so as to extend upward from the vicinity of the center in the front-rear direction on the upper edge 20 a side of the airbag 20, so It is arranged so that it can be introduced.

そして、各保護部２３・２４は、膨張時のエアバッグ２０が、前後方向の幅寸法を狭め、また、前後方向に延びる板形状を維持できるように、区画部３４と板状部３１とによって区画されて前後方向に並設される複数のセル２２ａ、を配設させて、構成されている。各セル２２ａは、上端を連通部２５に連通させて、上下方向に棒状に延びるように、配設されている。実施形態の場合、前保護部２３では、四つのセル２２ａが並設され、後保護部２４では、三つのセル２２ａが並設されている。 And each protection part 23 * 24 is the partition part 34 and the plate-shaped part 31 so that the airbag 20 at the time of expansion | swelling can narrow the width dimension of the front-back direction, and can maintain the plate shape extended in the front-back direction. A plurality of cells 22a that are partitioned and arranged in parallel in the front-rear direction are arranged. Each cell 22a is arranged so that its upper end communicates with the communication portion 25 and extends in a bar shape in the vertical direction. In the case of the embodiment, in the front protection part 23, four cells 22a are arranged in parallel, and in the rear protection part 24, three cells 22a are arranged in parallel.

非流入部２８の周縁部２９は、ガス流入部２１の外周縁に配置されている。板状部３１は、連通部２５の下方における前・後保護部２３・２４の間に位置して、略長方形板状とし、また、板状部３２は、エアバッグ２０の前端側に配置される三角板状としている。さらに、板状部３３は、エアバッグ２０の後端側に配置される略長方形形状として、エアバッグ２０の展開膨張完了時に窓Ｗ３を覆うように、形成されている。これらの板状部３１・３２・３３は、エアバッグ２０の全体形状を確保するとともに、膨張用ガスＧを流入させる部位の容積を減らして、エアバッグ２０の膨張開始から膨張完了前の時間を極力短くするために配設されている。各セル２２ａ間に配設される区画部３４は、それぞれ、略Ｔ字形状として、エアバッグ２０の下縁２０ｂ側の周縁部２９から上方に延びるように、配設されている。 The peripheral edge 29 of the non-inflow portion 28 is disposed on the outer peripheral edge of the gas inflow portion 21. The plate-like portion 31 is located between the front and rear protection portions 23 and 24 below the communication portion 25 and has a substantially rectangular plate shape, and the plate-like portion 32 is disposed on the front end side of the airbag 20. It has a triangular plate shape. Further, the plate-like portion 33 is formed in a substantially rectangular shape arranged on the rear end side of the airbag 20 so as to cover the window W3 when the airbag 20 is completely deployed. These plate-like portions 31, 32, and 33 secure the overall shape of the airbag 20 and reduce the volume of the portion into which the inflation gas G flows, so that the time from the start of inflation of the airbag 20 to the completion of inflation can be reduced. It is arranged to make it as short as possible. The partition portions 34 disposed between the cells 22a are substantially T-shaped so as to extend upward from the peripheral edge portion 29 on the lower edge 20b side of the airbag 20.

また、取付部３０は、板状部３２・３３を含めたエアバッグ２０の上縁２０ａ側に、上方へ突出するように、複数、配置されて、エアバッグ２０をインナパネル２にボルト１６止めするための取付孔３０ａを備えて、構成されている。各取付部３０は、当板としての取付ブラケット１５が取り付けられて、ブラケット１５と共に、インナパネル２にボルト１６止めされることとなる。 A plurality of attachment portions 30 are arranged on the upper edge 20a side of the airbag 20 including the plate-like portions 32 and 33 so as to protrude upward, and the airbag 20 is fixed to the inner panel 2 with bolts 16. The mounting hole 30a for carrying out is comprised. Each mounting portion 30 is attached with a mounting bracket 15 as a contact plate, and is bolted to the inner panel 2 with the bolt 16 together with the bracket 15.

そして、エアバッグ２０の下縁２０ｂの前端部２０ｃに、最前端の取付部３０Ｆが配設されて、この取付部３０Ｆは、窓Ｗ１の周縁における下縁ＤＷ側の前端部付近となるフロントピラー部ＦＰの下端のインナパネル２の部位に、ボルト１６止めされることとなる。この前端部２０ｃの部位は、エアバッグ２０の下縁２０ｂの前後方向の端部であって、ボディ１側に固定されることから、固定側端部２０ｃを構成することとなる。 The front end portion 20c of the lower edge 20b of the airbag 20 is provided with a frontmost end mounting portion 30F. The mounting portion 30F is a front pillar that is near the front end portion on the lower edge DW side at the periphery of the window W1. The bolt 16 is fixed to the part of the inner panel 2 at the lower end of the part FP. The front end portion 20c is an end portion in the front-rear direction of the lower edge 20b of the airbag 20, and is fixed to the body 1 side, and thus constitutes a fixed-side end portion 20c.

なお、エアバッグ２０の展開膨張完了時の形状は、図４・５に示すように、取付部３０Ｆから後方に延びるエアバッグ２０の下縁２０ｂが、前後方向に沿った直線状として、窓Ｗ１・Ｗ２・Ｗ３の開口部位の領域を越えた下方、すなわち、ベルトラインＢＬより下方、に配置可能に、形成されている。エアバッグ２０の上縁２０ａ側は、フロントピラー部ＦＰの下縁側からルーフサイドレール部ＲＲの下縁側に延びるような形状とし、後端側では、リヤピラー部ＲＰの上方付近まで、配置されるように、形成されている。 As shown in FIGS. 4 and 5, the airbag 20 has a lower edge 20b extending rearward from the attachment portion 30F as a straight line along the front-rear direction, as shown in FIGS. It is formed so that it can be arranged below the area of the opening part of W2 and W3, that is, below the belt line BL. The upper edge 20a side of the airbag 20 is shaped so as to extend from the lower edge side of the front pillar part FP to the lower edge side of the roof side rail part RR, and is arranged on the rear end side to the vicinity of the upper part of the rear pillar part RP. Is formed.

そして、展開膨張完了時におけるエアバッグ２０の下縁２０ｂの後端部２０ｄは、移動側端部２０ｄを構成して、牽引装置３６の移動片４２に連結されている。 The rear end 20d of the lower edge 20b of the airbag 20 at the time of completion of deployment and inflation constitutes the moving side end 20d and is connected to the moving piece 42 of the traction device 36.

そして、牽引装置３６は、図１〜３に示すように、リヤピラー部ＲＰの上下端付近のインナパネル２に、支持フレーム３８・３９を取り付けて、支持フレーム３８・３９間に、ねじ棒４０とガイドロッド４１とを配設させるとともに、移動片４２を配設させ、さらに、支持フレーム３９に、ねじ棒４０を回転駆動させるためのモータ３７を取り付けて、車両Ｖに搭載されている。 As shown in FIGS. 1 to 3, the traction device 36 attaches support frames 38 and 39 to the inner panel 2 near the upper and lower ends of the rear pillar portion RP, and between the support frames 38 and 39, the screw rod 40 and The guide rod 41 is disposed, the moving piece 42 is disposed, and a motor 37 for rotating the screw rod 40 is attached to the support frame 39 and mounted on the vehicle V.

ねじ棒４０とガイドロッド４１とは、窓Ｗ３の上縁付近から下縁付近までの領域で、相互に軸方向を平行として略上下方向に沿って配設されており、移動片４２を最下端まで移動させた際、エアバッグ２０の下縁２０ｂに大きな張力を発生させるように、下端側を、エアバッグ２０の固定側端部２０ｃから離れるように後方側にずらして、配設されている。ねじ棒４０は、支持フレーム３８・３９に回動可能に支持されて、モータ３７の図示しない駆動軸に連結されて、ガイドロッド４１の後方側に配設されている。また、ガイドロッド４１は、支持フレーム３８．３９に固定されて支持されている。 The screw rod 40 and the guide rod 41 are arranged in the region from the vicinity of the upper edge of the window W3 to the vicinity of the lower edge, and are arranged along the substantially vertical direction with the axial direction parallel to each other. The lower end side of the airbag 20 is shifted to the rear side away from the fixed side end 20c of the airbag 20 so that a large tension is generated in the lower edge 20b of the airbag 20 when the airbag 20 is moved to the rear side. . The screw rod 40 is rotatably supported by the support frames 38 and 39, is connected to a drive shaft (not shown) of the motor 37, and is disposed on the rear side of the guide rod 41. The guide rod 41 is supported by being fixed to the support frame 38.39.

移動片４２は、ねじ棒４０に螺合させるねじ孔４２ａを備えるとともに、ガイドロッド４１を挿通させるガイド孔４２ｂを備えて構成されている。また、移動片４２には、前端側に、エアバッグ２０の移動側端部２０ｄと連結させるための可撓性を有した短い連結材４２ｃが、配設されている。そして、モータ３７の回転駆動により、ねじ棒４０が所定方向に回転すれば、ねじ棒４０に噛合している移動片４２は、ガイドロッド４１に沿って、下降移動することとなる。 The moving piece 42 includes a screw hole 42 a that is screwed into the screw rod 40 and a guide hole 42 b through which the guide rod 41 is inserted. Further, the movable piece 42 is provided with a short coupling member 42c having flexibility for coupling with the movable side end 20d of the airbag 20 on the front end side. When the screw rod 40 is rotated in a predetermined direction by the rotation of the motor 37, the moving piece 42 engaged with the screw rod 40 moves downward along the guide rod 41.

なお、エアバッグ２０のＷ１・Ｗ２・Ｗ３の上縁側への収納時には、窓Ｗ３の上縁側に収納される移動側端部２０ｄを、リヤピラー部ＲＰの上方付近のエアバッグカバー１８に隠れる位置に収納させることから、その移動側端部２０ｄに追従させて、移動片４２も支持フレーム３８側に配置されることとなる。そして、移動片４２は、ねじ棒４０の回転駆動により、下降移動した際の最下端位置は、牽引したエアバッグ２０の移動側端部２０ｄを、窓Ｗ３の下縁ＤＷより下方位置、すなわち、窓Ｗ３のベルトラインＢＬより下方位置に配置するように、設定されている。勿論、この移動側端部２０ｄを下降移動させた際には、エアバッグ２０が膨張していない状態でも、固定側・移動側端部２０ｃ・２０ｄ間におけるエアバッグ２０の下縁２０ｂの全域に、前後後方に沿う張力を生じさせるように、牽引完了時の固定側・移動側端部２０ｃ・２０ｄ間の距離が、設定されている。 When the airbag 20 is stored on the upper edge side of W1, W2, and W3, the moving side end portion 20d stored on the upper edge side of the window W3 is hidden in the airbag cover 18 near the upper portion of the rear pillar portion RP. Since it is stored, the moving piece 42 is also arranged on the support frame 38 side so as to follow the moving side end 20d. And the moving piece 42 is the lowermost position when the moving piece 42 is moved downward by the rotational drive of the screw rod 40, the moving side end 20d of the pulled airbag 20 is positioned below the lower edge DW of the window W3, that is, It is set so as to be disposed at a position below the belt line BL of the window W3. Of course, when the moving side end portion 20d is moved downward, even when the airbag 20 is not inflated, the entire region of the lower edge 20b of the airbag 20 between the fixed side and the moving side end portions 20c and 20d. The distance between the fixed side / moving side end portions 20c and 20d at the completion of the traction is set so as to generate a tension along the front and rear and the rear.

また、牽引装置３６のモータ３７は、実施形態の場合、適宜、減速機構を設けた電動モータが利用されている。 In the embodiment, as the motor 37 of the traction device 36, an electric motor provided with a speed reduction mechanism is appropriately used.

また、牽引装置３６は、図１・２に示すように、リヤピラー部ＲＰの車内側に配置されるガーニッシュ７に覆われて、車両Ｖに搭載されている。ガーニッシュ７は、前縁側に、車内側に開き可能なドア部７ａを配設させており、移動片４２の下降移動時、連結材４２ｃやエアバッグ２０の移動側端部２０ｄ付近が、ドア部７ａを押して開かせ、ガーニッシュ７とリヤピラー部ＲＰのインナパネル２との間を、下方側へ移動することとなる。 The traction device 36 is mounted on the vehicle V so as to be covered with a garnish 7 disposed on the inner side of the rear pillar portion RP as shown in FIGS. The garnish 7 is provided with a door portion 7a that can be opened on the vehicle interior side on the front edge side, and when the moving piece 42 is moved downward, the vicinity of the connecting side 42c and the moving side end portion 20d of the airbag 20 is the door portion. 7a is pushed and opened to move downward between the garnish 7 and the inner panel 2 of the rear pillar portion RP.

この乗員拘束装置Ｓの車両Ｖへ搭載する工程の概略を説明すると、エアバッグ２０を非膨張状態の平らに展開した状態から、上縁２０ａと平行な折目Ｃ（図４参照）を付けて、下縁２０ｂ側が上縁２０ａ側に接近するように略上下方向に折り重ねる蛇腹折りにより、折り畳み、その後、エアバッグ２０の周囲に、破断可能な図示しないラッピング材を巻き付ける。さらに、各取付部３０を引き出して、所定の取付ブラケット１５を取り付けるとともに、接続口部２６に、取付ブラケット１１を取付済みのインフレーター１０を挿入して、クランプ１３により、接続口部２６とインフレーター１０とを連結する。また、予め組立済みの牽引装置３６の移動片４２から延びる連結材４２ｃを、エアバッグ２０の移動側端部２０ｄに連結して、組付体を形成する。そして、各取付ブラケット１１・１５を、所定のインナパネル２の位置に配置させてボルト１２・１４止めするとともに、牽引装置３６の支持フレーム３８・３９を所定のインナパネル２の位置に固定すれば、組付体を車両Ｖに搭載することができる。 The outline of the process of mounting the occupant restraint device S on the vehicle V will be described. A fold C (see FIG. 4) parallel to the upper edge 20a is attached from a state in which the airbag 20 is deployed flat in a non-inflated state. Folding is performed by bellows folding so that the lower edge 20b side approaches the upper edge 20a side, and then a wrapping material (not shown) that can be broken is wound around the airbag 20. Further, each attachment portion 30 is pulled out to attach a predetermined attachment bracket 15, and the inflator 10 with the attachment bracket 11 already attached is inserted into the connection port portion 26, and the connection port portion 26 and the inflator 10 are inserted by the clamp 13. And Further, the connecting member 42c extending from the moving piece 42 of the assembled traction device 36 is connected to the moving side end 20d of the airbag 20 to form an assembly. Then, the mounting brackets 11 and 15 are arranged at the predetermined inner panel 2 positions and fastened with the bolts 12 and 14, and the support frames 38 and 39 of the traction device 36 are fixed at the predetermined inner panel 2 positions. The assembly can be mounted on the vehicle V.

その後、インフレーター１０とモータ３７とに、作動用の制御装置から延びる図示しないリード線を結線させて、フロントピラーガーニッシュ３やルーフヘッドライニング４を、ボディ１側のインナパネル２に取り付け、さらに、ピラーガーニッシュ５・６やリヤピラーガーニッシュ７を、ボディ１側のインナパネル２に取り付ければ、乗員拘束装置Ｓを、車両Ｖに搭載することができる。 Thereafter, lead wires (not shown) extending from the control device for operation are connected to the inflator 10 and the motor 37, and the front pillar garnish 3 and the roof head lining 4 are attached to the inner panel 2 on the body 1 side. The occupant restraint device S can be mounted on the vehicle V by attaching the garnishes 5 and 6 and the rear pillar garnish 7 to the inner panel 2 on the body 1 side.

実施形態の乗員拘束装置Ｓでは、作動時、インフレーター１０が膨張用ガスを頭部保護エアバッグ２０に供給することから、エアバッグ２０は、連通部２５や複数のセル２２ａに膨張用ガスを流入させ、エアバッグカバー１８を押し開いて下方へ展開し、窓Ｗ１・Ｗ２・Ｗ３やピラー部Ｐ１・Ｐ２の車内側を覆うように、展開膨張を完了させることなる。 In the occupant restraint device S of the embodiment, since the inflator 10 supplies the inflation gas to the head protection airbag 20 during operation, the airbag 20 flows the inflation gas into the communication portion 25 and the plurality of cells 22a. Then, the airbag cover 18 is pushed open and deployed downward, and the deployment and inflation are completed so as to cover the insides of the windows W1, W2, and W3 and the pillar portions P1 and P2.

そして、頭部保護エアバッグ２０が膨張を完了させれば、複数のセル２２ａによって、クッション性良く、乗員の保護が可能となるとともに、前後方向に沿う張力が発生する。なお、セル２２ａだけによる張力は、エアバッグ２０の前後端の取付部３０Ｆ・３０Ｂとを結ぶ斜め方向のラインに、発生することとなる（図５参照）。 When the head protection airbag 20 completes the inflation, the plurality of cells 22a can protect the occupant with good cushioning properties and generate tension in the front-rear direction. In addition, the tension | tensile_strength only by the cell 22a will generate | occur | produce in the diagonal line which connects the attaching parts 30F * 30B of the front-back end of the airbag 20 (refer FIG. 5).

また、牽引装置３６のモータ３７が、インフレーター１０の作動とともに、始動して、ねじ棒４０を回転駆動させることから、図５に示すように、窓Ｗ３の上縁側に収納していたエアバッグ２０の移動側端部２０ｄを、ガイドロッド４１で案内される移動片４２とともに下降させて、最下端位置の窓Ｗ３のベルトラインＢＬの下方位置まで、配置させることととなり、エアバッグ２０の下縁２０ｂにおける固定側・移動側端部２０ｃ・２０ｄ間に、前後方向に沿う張力を生じさせることとなる。 Further, since the motor 37 of the traction device 36 is started together with the operation of the inflator 10 to rotate the screw rod 40, the airbag 20 stored on the upper edge side of the window W3 as shown in FIG. The moving side end 20d of the airbag 20 is lowered together with the moving piece 42 guided by the guide rod 41, and is disposed to a position below the belt line BL of the window W3 at the lowest end position. Tension along the front-rear direction is generated between the fixed side / moving side end portions 20c and 20d in 20b.

そして、この牽引装置３６は、セル２２ａと無関係に、エアバッグ２０の下縁２０ｂに張力を発生させることができることから、エアバッグ２０の展開膨張完了後に、車両Ｖが横転し、開口した窓Ｗ１・Ｗ２を経て、路面側からの傷付けにより、セル２２ａがガス漏れを生じさせて、エアバッグ２０の内圧が低下しても、エアバッグ２０の下縁２０ｂ自体に生じた前後方向に沿う張力を、維持することができて、エアバッグ２０における乗員を車内側に拘束する性能を、低下させない。 The traction device 36 can generate tension on the lower edge 20b of the airbag 20 regardless of the cell 22a. Therefore, after the airbag 20 has been deployed and inflated, the vehicle V rolls over and opens the window W1. -Even if the cell 22a causes gas leakage due to scratches from the road surface side through W2, and the internal pressure of the airbag 20 decreases, the tension along the front-rear direction generated at the lower edge 20b of the airbag 20 itself is applied. The performance of restraining the occupant in the airbag 20 to the inside of the vehicle can be maintained.

勿論、エアバッグ２０は、図１に示すように、エアバッグ２０の移動側端部２０ｄと連結される移動片４２を、下降可能に、窓Ｗ３の上縁側に配置させておけば、窓Ｗ１・Ｗ２・Ｗ３の上縁側となるフロントピラー部ＦＰの下縁側からルーフサイドレール部ＲＲの下縁側に、収納できることとなる。 Of course, as shown in FIG. 1, the airbag 20 has the window W1 provided that the moving piece 42 connected to the moving side end 20d of the airbag 20 is disposed on the upper edge side of the window W3 so as to be lowered. -It can be accommodated from the lower edge side of the front pillar portion FP on the upper edge side of W2 and W3 to the lower edge side of the roof side rail portion RR.

したがって、実施形態の乗員拘束装置Ｓでは、エアバッグ２０を窓Ｗ１・Ｗ２・Ｗ３の上縁側に収納できるとともに、膨張完了後にエアバッグ２０の内圧が低下しても、エアバッグ２０の下縁２０ｂ自体に生じている前後方向に沿う張力を、維持することができる。 Therefore, in the occupant restraint device S of the embodiment, the airbag 20 can be stored on the upper edge side of the windows W1, W2, and W3, and the lower edge 20b of the airbag 20 even if the internal pressure of the airbag 20 decreases after the completion of inflation. The tension along the front-rear direction generated in itself can be maintained.

なお、牽引装置３６のモータ３７は、エアバッグ２０の展開膨張完了後において、車両Ｖの横転時等にセル２２ａがガス漏れを生じさせ、エアバッグ２０の内圧が低下するまでに、エアバッグ２０の下縁２０ｂ自体に前後方向の張力を生じさせて、乗員を車内側に拘束できればよいことから、エアバッグ２０の展開時から始動しなくとも、すなわち、インフレーター１０の作動とともに始動しなくとも、エアバッグ２０の展開途中や展開膨張完了時、あるいは、展開膨張完了後から、始動してもよい。 Note that the motor 37 of the traction device 36 causes the cell 20a to leak gas when the vehicle V rolls over after the airbag 20 has been deployed and inflated until the internal pressure of the airbag 20 decreases. Since it is only necessary to generate a longitudinal tension on the lower edge 20b of the vehicle and restrain the occupant inside the vehicle, even if the airbag 20 is not started when it is deployed, that is, without being started with the operation of the inflator 10, The airbag 20 may be started during deployment, at the time of completion of deployment, or after the completion of deployment.

また、実施形態では、牽引装置３６における移動側端部２０ｄに連結される移動片４２は、ねじ送りされるように、ねじ棒４０に螺合しており、ねじ棒４０が所定方向に回転しない限り、上方移動が規制されることから、モータ３７を回転駆動し続けなくとも、すなわち、モータ３７を停止させておいても、エアバッグ２０の下縁２０ｂ側に発生させた張力を維持できる。また、移動片４２が、略上下方向に沿うように配設されたガイドロッド４１とねじ棒４０とに沿って、下降移動することから、エアバッグ２０の移動側端部２０ｄ付近を、不必要に車内側に突出させること無く、下降させることができる。 In the embodiment, the moving piece 42 connected to the moving side end 20d of the traction device 36 is screwed to the screw rod 40 so as to be screwed, and the screw rod 40 does not rotate in a predetermined direction. As long as the upward movement is restricted, the tension generated on the lower edge 20b side of the airbag 20 can be maintained even if the motor 37 is not continuously rotated, that is, even when the motor 37 is stopped. Further, since the moving piece 42 moves downward along the guide rod 41 and the screw rod 40 arranged so as to be substantially along the vertical direction, the vicinity of the moving side end 20d of the airbag 20 is unnecessary. It can be lowered without projecting inside the vehicle.

そして、実施形態では、エアバッグ２０の固定側端部２０ｃを、窓Ｗ１のベルトラインＢＬより下方に配置させ、また、牽引装置３６の移動片４２を利用して、エアバッグ２０の移動側端部２０ｄも、窓Ｗ３のベルトラインＢＬより下方に配置させており、作動完了時の固定側端部２０ｃと移動側端部２０ｄとの間におけるエアバッグ２０の下縁２０ｂの全域が、窓Ｗ１・Ｗ２・Ｗ３のベルトラインＢＬより下方に配置されて、エアバッグ２０が、窓Ｗ１・Ｗ２・Ｗ３の上縁から下縁までの全域を覆うこととなって、乗員の車内側への拘束性能を、一層、向上させることができる。 In the embodiment, the fixed side end 20c of the airbag 20 is disposed below the belt line BL of the window W1, and the moving side end of the airbag 20 is utilized by using the moving piece 42 of the traction device 36. The portion 20d is also disposed below the belt line BL of the window W3, and the entire area of the lower edge 20b of the airbag 20 between the fixed side end 20c and the moving side end 20d when the operation is completed is the window W1. -Arranged below the belt line BL of W2 and W3, the airbag 20 covers the entire area from the upper edge to the lower edge of the windows W1, W2, and W3, and restrains the occupant inside the vehicle. Can be further improved.

なお、実施形態では、牽引装置３６の牽引時、エアバッグ２０の下縁２０ｂの全域をベルトラインＢＬの下方に配置させるように構成したが、エアバッグ２０の下縁２０ｂ側の固定側端部２０ｃと移動側端部２０ｄの一方だけを、ベルトラインＢＬの下方に配置させるようにして、すなわち、少なくとも下縁２０ｂの一部を、ベルトラインＢＬの下方に配置させるようにしてもよい。勿論、窓Ｗ１・Ｗ２・Ｗ３を覆う領域が少なくなるものの、エアバッグ２０の下縁２０ｂが、ベルトラインＢＬの近傍の上方に配置されるように、構成してもよい。 In the embodiment, the entire region of the lower edge 20b of the airbag 20 is arranged below the belt line BL when the towing device 36 is towed, but the fixed side end portion on the lower edge 20b side of the airbag 20 is configured. Only one of 20c and the moving side end 20d may be arranged below the belt line BL, that is, at least a part of the lower edge 20b may be arranged below the belt line BL. Of course, although the area | region which covers window W1, W2, W3 decreases, you may comprise so that the lower edge 20b of the airbag 20 may be arrange | positioned above the vicinity of the beltline BL.

また、実施形態では、エアバッグ２０の下縁２０ｂの前端部２０ｃ側をボディ１側のインナパネル２に固定し、後端部２０ｄ側を連結材３５に連結させた場合を示したが、牽引装置３６を含めて、前後を入れ替え、前端部２０ｃ側に移動片４２を連結し、後端部２０ｄ側をボディ１側のインナパネル２に固定してもよい。 In the embodiment, the case where the front end 20c side of the lower edge 20b of the airbag 20 is fixed to the inner panel 2 on the body 1 side and the rear end 20d side is connected to the connecting member 35 is shown. Including the device 36, the front and rear may be switched, the moving piece 42 may be connected to the front end 20c side, and the rear end 20d side may be fixed to the inner panel 2 on the body 1 side.

本発明の一実施形態における乗員拘束装置の車両への搭載状態を示す車内側から見た図である。It is the figure seen from the vehicle inner side which shows the mounting state to the vehicle of the passenger | crew restraint apparatus in one Embodiment of this invention. 図１のII−II部位の概略断面図である。It is a schematic sectional drawing of the II-II site | part of FIG. 実施形態の牽引装置を説明する概略図である。It is the schematic explaining the traction apparatus of embodiment. 実施形態に使用するエアバッグの展開図である。It is an expanded view of the airbag used for embodiment. 実施形態の乗員拘束装置の作動完了時を示す車内側から見た図である。It is the figure seen from the vehicle inner side which shows the time of completion | finish of operation | movement of the passenger | crew restraint apparatus of embodiment.

Explanation of symbols

２０…頭部保護エアバッグ、
２０ａ…上縁、
２０ｂ…下縁、
２０ｃ…固定側端部、
２０ｄ…移動側端部、
２２ａ…セル、
３６…牽引装置、
３７…（駆動源）モータ、
４０…ねじ棒、
４１…ガイドロッド、
４２…移動片、
Ｗ１・Ｗ２・Ｗ３…窓、
ＦＰ…フロントピラー部、
ＲＰ…リヤピラー部、
Ｖ…車両、
Ｓ…乗員拘束装置。 20 ... head protection airbag,
20a ... upper edge,
20b ... lower edge,
20c ... fixed side end,
20d ... moving side end,
22a ... cell,
36 ... Traction device,
37 ... (drive source) motor,
40 ... screw rod,
41 ... guide rod,
42 ... moving piece,
W1, W2, W3 ... windows,
FP ... Front pillar part,
RP ... Rear pillar part,
V ... Vehicle,
S: Crew restraint device.

Claims

A head protection airbag that is folded and stored on the upper edge side of the window of the vehicle and can be covered from the upper edge side of the window so as to cover the inside of the window when inflating gas flows in, is provided.
The head protection airbag is an occupant restraint device that includes a plurality of cells arranged in parallel in the front-rear direction for narrowing the dimension in the front-rear direction when inflation gas flows in to complete the inflation. And
One end portion in the front-rear direction on the lower edge of the airbag at the time of completion of deployment is attached as a fixed-side end portion near the end portion in the front-rear direction of the lower edge of the window,
The other end portion in the front-rear direction at the lower edge of the airbag when deployment and inflation are completed is connected as a moving side end portion with a traction device disposed on the pillar portion at the periphery of the window,
The traction device is
In the region from the vicinity of the upper edge to the vicinity of the lower edge of the window, a screw rod disposed along the substantially vertical direction with the axial directions parallel to each other, and a guide rod
A moving piece connected to the moving side end of the airbag, and having a screw hole screwed into the screw rod, and a guide hole through which the guide rod is inserted;
A drive source for rotationally driving the screw rod;
Comprising
When the screw rod is driven to rotate, the moving side end portion of the airbag housed on the upper edge side of the window is lowered together with the moving piece to move the fixed side / moving side at the lower edge of the airbag when the internal pressure is reduced. An occupant restraint device, wherein the occupant restraint device is disposed so as to generate a tension along a front-rear direction between side end portions.

The fixed side end portion of the airbag is disposed below the lower edge of the window, and the moving piece in the traction device is positioned at the moving side end portion of the airbag below the lower edge of the window. The occupant restraint device according to claim 1, wherein the occupant restraint device is disposed so as to move to a position.