JP4830706B2 - Curtain airbag device - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a curtain airbag device that is provided in a wind part of a vehicle such as an automobile, a train, a ship, an aircraft, a space ship, or a building such as a house, a building, or a space station, and covers the window part instantaneously. Belonging to.

  Conventionally, a curtain-like airbag is housed in the upper side of the vehicle window, and gas is supplied to the airbag at the time of a vehicle collision or rollover, so that the window is instantly expanded and deployed. A curtain airbag device is known that covers it. In the case of this device, unless tension is obtained in the curtain (airbag), it is impossible to sufficiently protect the passenger by receiving the impact force from the passenger.

  Therefore, for example, as shown in Patent Document 1, a plurality of guide members that are spaced apart at predetermined positions in the longitudinal direction of the pillar portion between the airbag and the pillar portion, and an intermediate portion includes the plurality of guides. Flexibility that is movably supported by the member and has one end fixed to the front end lower part or rear end lower part of the airbag and the other end fixed to a predetermined position on the front end side or a predetermined position on the rear end side of the airbag. A tension applying means is provided that includes a long member (strap), and pulls the front end lower part of the airbag toward the vehicle front side or the rear end lower part toward the vehicle rear side as the airbag is deployed downward. Has been proposed.

  Further, in Patent Document 2, a force direction conversion means for converting a deployment force of the airbag substantially downward in the vehicle into a tension in the vehicle longitudinal direction between the lower end portion and the vehicle body when the deployment of the curtain airbag is completed. In other words, by providing an annular wire that spans between the airbag side fulcrum and the vehicle body side upper fulcrum and the lower fulcrum, even in a vehicle with little overhang from the rear end of the airbag to the rear of the vehicle, It has been proposed to provide the necessary and sufficient tension along the lower edge of the airbag.

Furthermore, in Patent Document 3, a rod-shaped guide member extending in the vertical direction of the vehicle body along the pillar is provided, while a loop-shaped connection band is attached in the vicinity of the lower corner edge of the rear end portion of the airbag. It has been proposed that the rear end portion of the airbag is connected to the guide member by being hung around the guide member, and the airbag is deployed downward along the guide member. In this configuration, when the occupant collides with the airbag after deployment, the lower end of the airbag is held by the guide member, so that tension is generated in the airbag and the occupant can be protected.
JP 2002-347560 A Japanese Patent Laid-Open No. 2003-081048 JP 2004-051016 A

  By the way, the curtain side portion provided with the strap, the wire, and the connection band as in the above-described conventional example receives a force that hinders the expansion by being pulled by the strap or the like. As a result, there is a high possibility that the deployment of the entire curtain is delayed.

  This invention is made | formed in view of such a point, The place made into the objective was developed by devising the structure with respect to the curtain airbag apparatus provided in window parts, such as a vehicle. It is intended to easily and reliably prevent the curtain from being pushed and moved by a person or an object inside the vehicle or the building, and to try to deploy the entire curtain as soon as possible.

In order to achieve the above object, in the present invention, the curtain is accommodated in the first side portion around the window portion, and the support portion is provided in the second side portion connected to the first side portion in the periphery of the window portion. When the curtain leading end moves in the curtain unfolding direction on the side of the curtain in the state where the curtain is unfolded, the curtain moves from the first side toward the support. An engaging portion that engages with the support portion is provided, and one end portion is coupled to the engaging portion of the curtain or the vicinity thereof, and the other end portion of the curtain is more than the side portion on the second side portion side. A tension member that includes a first transverse connecting member coupled to a portion where deployment is fast , and that crosses the curtain at an intermediate portion in the deployment direction of the curtain in a deployed state by engagement of the engagement portion with the support portion. A line is formed to Part is during deployment of the curtain, through the first transverse connecting member, by the second side portion side portion deployment is earlier than the side of, and configured to be pulled to the front side of the curtain deployment direction.

  Specifically, the invention of claim 1 is directed to a curtain airbag device provided in a window portion having one or two or more windows.

And the curtain which has an expansion part into which gas is inject | poured, is accommodated in the 1st edge part around the said window part, and expand | deploys so that the said window part may be covered by the expansion | swelling by the said gas injection | pouring of the said expansion part, A gas supply device for supplying the gas to the inflating portion of the curtain; a support portion provided on a second side connected to the first side in the periphery of the window; and the second of the curtain in a deployed state It is provided on the side part of the side part, and is positioned closer to the first side part than the support part in the accommodated state of the curtain, and the expansion tip of the curtain moves in the curtain expansion direction due to the expansion of the expansion part. Accordingly, the engaging portion that moves from the first side portion toward the supporting portion and engages with the supporting portion, and one end portion are coupled to the engaging portion or the vicinity thereof in the curtain. The other end , And a first transverse connecting member deployment than the side portion of the second side portion side in the curtain is coupled to the fast site, by the engagement between the supporting portion of the engaging portion, the completely deployed state A tension line that crosses the curtain is formed at an intermediate portion in the deployment direction of the curtain, and the engagement portion is configured to move the first through the first transverse connecting member when the curtain is deployed. It shall be comprised so that it may be pulled by the front side of a curtain expansion | deployment direction by the site | part which expand | deploys earlier than the side part of 2 sides .

  With the above configuration, when gas is injected into the expansion portion of the curtain, the expansion tip of the curtain moves to the front side in the curtain expansion direction due to expansion of the expansion portion. Along with this, the engaging part provided on the side part on the second side part of the curtain moves from the first side part around the window part toward the support part provided on the second side part, Engage with the support. Here, in order to ensure that the engaging portion engages with the support portion, for example, a string-like member is passed through a through-hole formed in the support member constituting the support portion, and one end of the string-like member is attached to the curtain. Of the second side portion of the curtain is coupled to the intermediate portion of the curtain deployment direction, which is the engagement portion, and the other end portion is closer to the deployment tip portion side than the intermediate portion of the second side portion side of the curtain. Just combine them. Then, as the deployment leading end of the curtain moves in the curtain deployment direction, the string-like member slides relative to the support part, and the engagement position of the string-like member with the support part is the one end. By moving to the portion side, the engaging portion is guided to the string-like member and engaged with the support portion. When the engaging portion engages with the support portion in this manner, the side portion (engagement portion) on the second side portion side of the curtain is restrained by the support portion. And the line which connects both these restraint parts becomes a tension line which tension | tensile_strength by restraining also the edge part in the position which crossed the curtain from the engaging part in the curtain. Because this tension line is formed, even if a person or an object inside a vehicle or a building collides with the curtain, the impact force does not cause the curtain to be pushed and move. be able to.

On the other hand, the side portion provided with the engaging portion tends to be delayed in deployment due to, for example, the influence of sliding resistance between the string-like member and the support member. However, according to the present invention, one end of the first transverse connecting member is coupled to the engaging portion of the curtain or the vicinity thereof, and the other end is coupled to a portion that is deployed faster than the side portion on the second side side. Therefore, the engaging portion or the vicinity thereof is expanded by being pulled toward the portion where the expansion is fast (the front side in the curtain expansion direction) via the first transverse connecting member, and the second side portion The development delay of the side part is prevented. Therefore, the entire curtain can be deployed at an early stage.

  Here, the shape of the window part may be substantially triangular, substantially square, or other polygonal shape, and each side part around the window part is The shape is not limited to a straight line but may be an arc.

  In addition, the curtain may be folded in a bellows shape and accommodated in the first side portion, or may be folded in a round shape to be accommodated in the first side portion.

  According to a second aspect of the invention, in the first aspect of the invention, when the first transverse connecting member is stretched so as not to loosen in a state before the inflated portion of the curtain is inflated, the first transverse connection in the curtain is provided. It is assumed that the portion between the both ends of the member is in a loose state.

  As a result, when the curtain is deployed, the first transverse connecting member is stretched faster than the portion between the joints at both ends of the first transverse connecting member of the curtain. The side portion is reliably pulled through the first cross-connecting member toward a portion that is deployed faster than the side portion. Therefore, the entire curtain can be surely deployed at an early stage.

According to a third aspect of the present invention, in the first or second aspect of the invention, in the curtain in the unfolded state, the first end connecting portion of the first cross connecting member is sandwiched between the other end connecting portions of the first cross connecting member. The edge located on the opposite side is configured to be restrained around the window portion located in the vicinity of the edge when the curtain is completely deployed, and the edge is restrained and engaged. The tension line is formed at an intermediate portion in the deployment direction of the curtain in a deployed state by engagement of the support portion with the support portion, and one end portion of the first transverse connecting member in the curtain is configured . The other end portion is joined to the binding portion or the vicinity thereof, and the other end portion is bound to the edge portion of the curtain or the vicinity thereof, or the periphery of the window portion restraining the edge portion. It shall have a combined second transverse connecting member.

  Thus, in a front view of the curtain in the unfolded state, the straight line connecting the engaging portion and the edge portion restrained around the window portion of the curtain (one end portion of the first transverse connecting member and the second transverse connecting member) The straight line connecting the other end is substantially the same as the tension line, and both cross-connecting members are arranged along the tension line or arranged closer to the deployment tip than the tension line. Even if an object collides with the curtain, the impact force can be received even more reliably.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the first and second cross-connecting members are arranged so that the one end of the first cross-connecting member and the second crossing member are in the unfolded state when viewed from the front. It is assumed that it is substantially along a straight line connecting the other end of the connecting member, or is located on the development tip side with respect to the straight line.

  By doing so, the other end portion of the first transverse connecting member is coupled to the deployment front end side that can be pulled so as to deploy the side portion on the second side portion of the curtain more quickly. The side part on the second side part side can be deployed even earlier. Even if a person or an object collides with the deployment tip side of the tension line in the curtain, the impact force can be received by the first and second transverse connecting members.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the curtain is developed so as to cover a window portion having a plurality of windows on the vehicle side, and the second side portion is The other end of the first transverse connecting member is a front pillar located on the foremost side of the vehicle and the rear side of the curtain in the unfolded state. It is assumed that it is connected to the portion corresponding to the intermediate pillar between the pillars or the vicinity thereof.

  Thus, even if the vehicle collides or rolls over, the vehicle occupant can be protected appropriately. In addition, after the curtain is deployed, the occupant can turn the deployment tip side of the tension line to the inside of the vehicle, and thus can escape from the window to the outside of the vehicle. Here, the curtain can be turned more largely at the portion between the joint portions at both ends of the first transverse connecting member. If the portion between the two corresponds to the window, the escape to the outside of the vehicle is not possible. It becomes easy. Therefore, according to the present invention, the other-end connecting portion of the first transverse connecting member is located at a portion corresponding to the intermediate pillar or in the vicinity thereof, and the portion between the both-end connecting portions of the first transverse connecting member is in the window. Accordingly, the vehicle occupant can easily escape from the window to the outside of the vehicle after the curtain is deployed while appropriately protecting the vehicle occupant.

As described above, according to the curtain airbag device of the present invention, the curtain is accommodated in the first side part around the window part, and the support part is provided in the second side part connected to the first side part around the window part. The curtain in the unfolded state moves to the support portion from the first side as the unfolding tip of the curtain moves in the curtain unfolding direction on the side of the second side of the curtain. An engaging portion that engages with the support portion is provided, and one end portion is coupled to the engaging portion of the curtain or the vicinity thereof, and the other end portion is on the second side side of the curtain. A first transverse connecting member coupled to a portion that is deployed earlier than the portion, and the engagement of the engagement portion with the support portion causes the curtain to be deployed at a middle portion in the deployment direction of the curtain in a deployed state. A transverse tension line is formed The engaging portion is pulled to the front side in the curtain deploying direction by the portion that is deployed faster than the side portion on the second side side via the first transverse connecting member when the curtain is deployed. with the arrangements to be a simple configuration, it is possible with the curtain can be reliably prevented from moving by being pushed by the vehicles and buildings inside the person or object, to deploy the entire curtain early .

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 shows a curtain airbag device according to Embodiment 1 of the present invention, and this curtain airbag device is configured to cover a side window portion (hereinafter referred to as a side window portion) of a vehicle (automobile). Is. In the figure, 1 is a vehicle body, 2 is a first window (front window) formed on a door 6 next to the driver's seat 5, and 3 is a front rear seat 7 (arranged immediately after the driver's seat 5). The second window (rear window) 4 provided on the side door 16 next to the rear seat is provided next to the rear rear seat 8 (the rearmost seat located at the rearmost position in the passenger compartment). It is the third window (quarter window). 11 is a first pillar (front pillar) disposed on the front side of the door 6, 12 is a second pillar (front center pillar) on the rear side of the door 6, and 13 is between the second window 3 and the third window 4. A third pillar (rear center pillar) 14 is provided on the rear side of the third window 4 and a fourth pillar (quarter pillar) on the rear side of the third window 4.

  Each of the passenger seats 5, 7, 8 is provided with a seat belt 15 for protecting the passenger 9. The passenger seats 5, 7, and 8 have seat cushions 5a, 7a, and 8a and seat backs 5b, 7b, and 8b, respectively.

  In the present embodiment, a portion where the three windows 2 to 4 of the vehicle body 1 are arranged side by side is regarded as one side window portion. That is, the side window portion has a periphery of the side window portion from an upper side portion, a lower side portion, a first side portion (a side portion on the vehicle front side), and a second side portion (a side portion on the vehicle rear side). More specifically, the upper side portion has a substantially trapezoidal shape shorter than the lower side portion. The upper side portion is constituted by the roof side rail 32 of the vehicle body 1, the lower side portion is constituted by the doors 6 and 16 and the belt line of the vehicle body 1, the first side portion is constituted by the first pillar 11, and The two side portions are constituted by fourth pillars 14. The upper side corresponds to the first side of the present invention, and the second side corresponds to the second side connected to the first side. The first pillar 11 corresponds to a front pillar located on the foremost side of the vehicle, the fourth pillar 14 corresponds to a rear pillar located on the most rear side of the vehicle, and the second and third pillars 12. , 13 correspond to intermediate pillars between the front and rear pillars.

  The curtain airbag apparatus includes a curtain 20 having an inflating portion that is inflated by injecting gas, an inflator 21 as a gas supply device that supplies gas to the inflating portion, and tape-shaped first and second transverse tethers 22. , 23 (first and second transverse connecting members), two front end support tethers 38, 38, and a string-like member 39. In the present embodiment, substantially the entire curtain 20 is the inflatable portion, but only the portion corresponding to the occupant 9 seated on each of the occupant seats 5, 7, 8 is configured to be the inflatable portion. May be.

  The curtain 20 is folded in a bellows shape (may be wound in a roll shape), and is housed in the upper side part around the side window part or a part of the first side part together with the first and second transverse tethers 22 and 23. Has been. The end of the curtain 20 in the accommodated state on the second side side (vehicle rear side) (the portion corresponding to the side of the curtain 20 in the unfolded state on the second side side) is the upper side. In the vicinity of the end of the second side portion side. The curtain 20 expands so as to cover the side window part and the lower side part around the side window part by the expansion of the expansion part due to the gas injection. That is, the curtain 20 is developed from the upper side around the side window part to the lower side, which is the front side in the curtain development direction, and the developed tip part reaches the lower side part (the side window part side edge of the lower side part is slightly changed). Over)). The curtain 20 is covered with a sheet-like member (not shown) such as paper that is easily torn when unfolded so that the folded state is maintained.

  The inflator 21 is activated when the vehicle is in a predetermined state to generate and supply gas. The inflator 21 is substantially at the center in the vehicle front-rear direction (the direction in which the upper side extends) at the upper portion of the expansion portion of the curtain 20. The part is connected by a pipe 28. The predetermined state is, for example, when a vehicle collision (especially a side collision) is predicted, when the vehicle collision is detected, or when the vehicle rollover is determined. And a controller for operating the inflator 21 to determine the occurrence of these states by receiving the outputs of the sensors.

  As shown in FIG. 2, the upper edge of the curtain 20 is pinned by a pin-shaped fixing member 55 at a plurality of locations including the end portion on the second side portion side of the curtain 20 at the outer panel 32a and the inner panel. The roof side rail 32 made of 32b is fixed to the inner panel 32b. The vehicle interior of the folded curtain 20 is covered with a roof trim 34. The roof trim 34 is detachably engaged with the side lining 35 at its side edge, and is detached from the side lining 35 by the expansion and deployment force of the curtain 20 to form a gap with the side lining 35. Deployment into 20 vehicle compartments is allowed. That is, the curtain 20 is deployed in the vehicle interior from the gap between the roof trim 34 and the side lining 35. The side lining 35 is held by the flange portion of the roof side rail 32. The side lining 35 may be a weather strip. Further, the roof trim 34 has pillar trims constituting the passenger compartment side surfaces of the pillars at the first to fourth pillars 11 to 14 (in FIG. 3 to FIG. ) So that the curtain 20 can be detached from the pillar trim. Each of the first to fourth pillars 11 to 14 is made of a synthetic resin harder than the roof trim 34 (soft material such as foaming urethane resin) (for example, polypropylene, thermoplastic olefin (TPO)). ing.

  One end portion of the two front end support tethers 38 and 38 is provided at two positions, a lower portion and a lower end portion of the curtain deployment direction (vertical direction) intermediate portion at the vehicle front side end portion of the curtain 20 in the unfolded state. Are combined. The other end portions of the front end support tethers 38 and 38 are both rotatably connected to a connecting portion 37 provided at a lower end portion (a portion separated from the roof side rail 32) of the first pillar 11. Both front end support tethers 38, 38 are accommodated in the first side portion in the accommodated state of the curtain 20, and when the curtain 20 is unfolded, the curtain 20 rotates while rotating around the connecting portion 37 accordingly. The front end of the vehicle is supported so that its deployment is stable. When the deployment of the curtain 20 is completed, the vehicle front side end portion of the curtain 20 is fixed and restrained to the connecting portion 37 via both front end support tethers 38, 38. The upper one of the front end support tethers 38, 38 has a tension line 40 on the curtain 20 as well as support (restraint) of the side portion of the curtain 20 on the second side portion side (rear side). Play a role to form.

  As shown in detail in FIGS. 3 to 5, a support member 36 is provided on the second side portion (fourth pillar 14) connected to the upper side portion around the side window portion. Here, it is preferable that the angle α sandwiching the side window portion between the side window portion side edge of the upper side portion and the side window portion side edge of the second side portion is in the range of 45 ° to 150 °. The support member 36 is disposed at a part of the inner panel 14b of the fourth pillar 14 (a vehicle body constituting the fourth pillar 14) that is separated from the upper side. Both ends of the support member 36 in the vertical direction are fixedly attached to the inner panel 14 b by bolts 53, and the support member 36 is disposed between the inner panel 14 b of the fourth pillar 14 and the pillar trim 56. Become. In the present embodiment, the support member 36 is disposed in the vicinity of the side window portion side edge (third window 4 side edge) in the second side portion. In FIG. 5, 14 a is an outer panel of the fourth pillar 14, and 14 c is a reinforcement of the fourth pillar 14. Reference numeral 51 denotes a back door, and reference numeral 54 denotes a weather strip provided between the back door 51 and the vehicle body 1.

  A through hole 36a is formed at the center in the vertical direction of the support member 36, and a string-like member 39 is inserted into the through hole 36a. The string-like member 39 is provided on the curtain 20 and constitutes a part of the curtain 20.

  One end portion of the string-like member 39 is coupled to an intermediate portion in the curtain unfolding direction (vertical direction) of the side portion on the second side portion side (vehicle rear side) in the curtain 20 in the unfolded state. On the other hand, the other end of the string-like member 39 is on the side of the distal end of the curtain 20 on the side of the second side of the second side of the curtain 20 (the second side of the side in this embodiment). To the deployment tip 20c) on the side of the. In the accommodated state of the curtain 20, both end portions of the string-like member 39 are positioned on the upper side, that is, on the upper side of the support member 36, and an intermediate portion of the string-like member 39 (in this embodiment, The substantially central portion in the length direction) is engaged with the through hole 36a of the support member 36. Further, the string-like member 39 is arranged between the inner panel 14 b of the fourth pillar 14 and the pillar trim 56 in the accommodated state of the curtain 20, similarly to the support member 36. That is, the pillar trim 56 covers the support member 36 and the string-like member 39 in the accommodated state of the curtain 20.

  The portion of the string-like member 39 between the engagement portion with the through hole 36a and the one end is bent upward immediately after exiting from the opening on the side window portion side (left side in FIG. 3) of the through hole 36a. The second side portion is lifted upward as it is, and extends to the vehicle rear side end portion of the curtain 20 accommodated in the upper side portion. On the other hand, the portion of the string-like member 39 between the engagement portion with the through-hole 36a and the other end portion is supported after coming out from the opening on the side opposite to the side window portion (right side in FIG. 3) of the through-hole 36a. The vehicle rear side of the curtain 20 accommodated in the upper side after the second side part is raised upward after reaching the side window part side around the lower side of the projecting part in which the through hole 36a of the member 36 is formed. It extends to the end. The reason why the other end portion side of the engaging portion of the string-like member 39 ascends after the lower side of the protruding portion where the through hole 36a of the support member 36 is formed is as described later. The curtain 20 is unfolded until the unfolded leading end 20c (the leading end of the string-like member 39) on the side of the second side portion of the curtain 20 is positioned below the height position of the support member 36. This is to improve the developability of the curtain 20 so that the string-like member 39 is not caught by the protruding portion.

  When the curtain 20 is deployed, the deployment tip thereof moves to the lower side, which is the front side in the curtain deployment direction, and the other end portion (hereinafter referred to as the tip portion) of the string-like member 39 is also moved downward. . At this time, as shown by a two-dot chain line in FIG. 5, the third window 4 side edge portion of the pillar trim 56 is deformed to the vehicle inner side (vehicle compartment side) by the distal end portion of the string-like member 39, thereby The front end portion of the shaped member 39 or the vicinity thereof emerges from the gap between the pillar trim 56 and the third window 4 into the vehicle interior. That is, since the inflator 21 is connected to a substantially central portion in the vehicle front-rear direction of the curtain 20, the curtain 20 starts to unfold from the substantially central portion in the vehicle front-rear direction, and, as will be described later, on the second side portion side of the curtain 20. The side portion is pulled through the first crossing tether 22 to the previously deployed side, that is, the vehicle front side (vehicle longitudinal direction center side) and the lower side. As a result, even if the side portion of the curtain 20 on the second side portion side (rear side of the vehicle) is located in the vicinity of the second side portion of the upper side portion in the accommodated state, The other end portion of the string-like member 39 coupled to the deployment tip portion 20c is moved to the lower side of the vehicle front side, which is the side away from the second side portion, of the deployment tip portion 20c Or the vicinity part is pulled out to the side window part side.

  Here, as shown in FIG. 5, the third window 4 side edge of the pillar trim 56 is located on the vehicle outer side than the vicinity of the vehicle rear side edge on the vehicle outer edge of the curtain 20 in the housed state, An angle θ between the third window 4 side edge of the pillar trim 56 and the vicinity of the vehicle rear end at the vehicle outer edge of the curtain 20 in plan view is an acute angle. With this and the preferable range of the angle α, the edge of the pillar trim 56 on the side of the third window 4 is easily deformed to the vehicle interior side, and the leading end of the string-like member 39 is easily brought out into the vehicle interior.

  When the deployment tip 20c (the tip of the string-like member 39) on the side portion on the second side portion side of the curtain 20 is positioned below the height position of the support member 36, the deployment tip As the portion 20c further moves downward, the string-like member 39 slides and moves with respect to the through-hole 36a of the support member 36, and the engagement position of the string-like member 39 with the through-hole 36a is as described above. Move to one end (hereinafter referred to as the base end) side. As a result, the base end portion of the string-like member 39 or the base end joint portion of the curtain 20 moves toward the support member 36 and eventually enters the through hole 36a of the support member 36, but without entering. It will be in the state contact | abutted and engaged with the opening peripheral part of this through-hole 36a (refer FIG. 6). The base end portion of the curtain 20 is also pulled to the front side of the vehicle in the same manner as the front end portion of the joint. Therefore, the base end portion of the cord-like member 39 is also pulled out to the side window portion side. The base end portion 39 or the base end connecting portion of the curtain 20 enters the fourth pillar 14 from the gap between the pillar trim 56 and the third window 4 immediately before the engagement with the through hole 36a of the support member 36. The support member 36 is engaged.

  The base end portion of the curtain 20 is joined in the state where the curtain 20 has been deployed by engaging the base end portion of the string-like member 39 or the base end joining portion of the curtain 20 with the through hole 36a of the support member 36. The part or its vicinity is restrained by the support member 36. Accordingly, the base end portion of the string-like member 39 or the base end portion coupling portion of the curtain 20 constitutes an engaging portion 44 (see FIGS. 1 and 6) that engages with the support member 36, and the support member 36. (In particular, the through hole 36a) constitutes a support portion.

  As shown in FIG. 6, when the curtain 20 is fully deployed, the deployment tip of the curtain 20 reaches the lower side, and the curtain 20 covers the entire curtain deployment direction (vertical direction) of the side window portion. At this time, the said string-like member 39 exists in the state extended substantially linearly in the substantially up-down direction. Further, the engaging portion 44 is engaged with the support member 36 as described above.

  On the other hand, the vehicle front side end portion of the curtain 20 is supported and restrained by the connecting portion 37 by the two front end support tethers 38, 38. Due to this support and the engagement of the engagement portion 44 with the support member 36, the engagement portion 44 and the connection portion 37 (or the engagement portion 44) are seen in the front view (vehicle side view) of the curtain 20 in the unfolded state. The tension line 40 of the curtain 20 is a straight line connecting the upper portion of the curtain 20 and the upper front end support tether 38 in the curtain 20, and the curtain 20 is not beaten even if an external force is applied to the curtain 20 on the tension line 40. Become. In this way, the tension line 40 is formed on the curtain 20 at a position away from the curtain base end portion (upper end portion) fixed to the inner panel 32b of the roof side rail 32, so that the occupant 9 This is advantageous in preventing jumping out of the windows 2-4.

  In the present embodiment, the occupant 9 seated on the occupant seats 5, 7, and 8 has the average physique of an American adult male, and the height position of the center of gravity of the head of the occupant 9 is the above tension. It is made higher than the line 40. In this embodiment, the height position of the tension line 40 becomes higher toward the rear side of the vehicle, so that the seating position is made higher toward the passenger seat on the rear side of the vehicle. Thereby, the head of the occupant 9 is reliably protected by the curtain 20. It should be noted that the lower end of the curtain 20 in the unfolded state is positioned below the side edge of the lower side around the side window even if the passenger is smaller than the average size of an American adult male. Thus, since a high tension is generated in the curtain 20 from the upper end to the lower end, the curtain 20 can be reliably protected.

  In the present embodiment, the first and second crossing tethers 22 and 23 are provided on the back surface (surface on the vehicle outer side) of the curtain 20 in the unfolded state so as to cross the curtain 20. These transverse tethers 22 and 23 are provided on the tension line 40. That is, one end portion (the vehicle rear side end portion) of the first crossing tether 22 is coupled to the engagement portion 44 in the curtain 20 in the unfolded state or the back surface of the vicinity thereof, and the other end of the first crossing tether 22 The portion (the vehicle front side end portion) is coupled to the back surface of the portion corresponding to the second pillar 12 on the tension line 40 in the curtain 20 in the unfolded state. Further, one end portion (vehicle rear side end portion) of the second transverse tether 22 is coupled to the other end portion coupling portion of the first transverse tether 22 in the curtain 20, and the other end portion (vehicle) of the second transverse tether 22. The front end portion) is coupled to the back surface of the vicinity of the coupling portion of the upper front end support tether 38 on the curtain 20 (on the tension line 40). Here, the vehicle front side end portion of the curtain 20 is located on the opposite side of the end portion coupling portion of the first transverse tether 22 across the other end portion joining portion of the first transverse tether 22 in the curtain 20 in the unfolded state. Since this edge portion is restrained by the first pillar 11 (connecting portion 37) located in the vicinity of the edge portion, the other end portion of the second transverse tether 22 is the first pillar 11. It will be couple | bonded with the vicinity part of the said edge part restrained by. Thereby, the first and second crossing tethers 22 and 23 are one end of the first crossing tether 22 and the other end of the second crossing tether 23 in a front view (vehicle side view) of the curtain 22 in the unfolded state. Is substantially along a straight line (corresponding to the tension line 40).

  In the present embodiment, the second transverse tether 23 is formed integrally with the first transverse tether 22, but may be a separate body from the first transverse tether 22. In this case, one end portion of the second transverse tether 23 may be coupled to the vicinity of the other end coupling portion of the first transverse tether 22 in the curtain 20. Further, regardless of whether the second transverse tether 23 is integral with or separate from the first transverse tether 22, the other end of the second transverse tether 23 is supported on the upper front end of the curtain 20. The front end of the tether 38 may be connected to the binding portion (the edge located on the opposite side of the curtain 20 from the one end of the first transverse tether 22 across the other portion of the first transverse tether 22). You may couple | bond with the connection part 37 to which the support tether 38 is couple | bonded.

  By providing the first and second transverse tethers 22 and 23 on the tension line 40 as described above, in addition to the formation of the tension line 40, the first along the tension line 40 when the curtain 20 is deployed. And the second transverse tethers 22, 23 are stretched, which more reliably prevents the curtain 20 from turning.

  In addition to the role of preventing the curtain 20 from curling, the first transverse tether 22 also has a role of speeding up the development of the side portion of the curtain 20 on the second side portion side. That is, when the curtain 20 is unfolded, the leading end portion or the vicinity thereof of the string-like member 39 is pulled out to the side window portion side by deforming the pillar trim 56, and the string-like member 39 penetrates the support member 36. Due to the influence of sliding resistance or the like when sliding with respect to the hole 36a, the development of the side portion of the curtain 20 on the second side portion side tends to be delayed. However, in the present embodiment, one end portion of the first transverse tether 22 is coupled to the engaging portion 44 in the curtain 20 or its vicinity, and the other end portion of the first transverse tether 22 is in a deployed state. Since it is couple | bonded with the site | part vicinity of 20 2nd pillar 12, the expansion | deployment of the side part by the side of the 2nd side part in the curtain 20 can be accelerated. That is, the other end portion coupling portion of the first transverse tether 22 in the curtain 20 is located at a substantially central portion in the vehicle front-rear direction to which the inflator 21 is connected, and is a portion that develops faster than the side portion on the second side portion side. And the 1st crossing tether 22 has connected the site | part which the expansion | deployment is quick, and the engaging part 44 in the curtain 20, or its vicinity part. As a result, the engagement portion 44 in the curtain 20 or the vicinity thereof, that is, the side portion on the second side portion side is the vehicle on the side of the other end portion coupling portion that has been deployed first via the first transverse tether 22. The front side and the vicinity thereof are pulled out to the side window part side while being pulled out to the front side and the lower side, and the side part on the second side side is the front side in the development direction (lower side). Quickly deploy to. Therefore, the delay in the expansion of the side portion on the second side portion side is prevented, and the entire curtain 20 can be expanded at an early stage.

  In the present embodiment, as shown in FIG. 7A, when the first transverse tether 22 is stretched so as not to loosen before the inflated portion of the curtain 20 is inflated, the first transverse in the curtain 20 is obtained. The portion between the tethers 22 at both ends is loosened, and the first transverse tether 22 is sewn and bonded only to the back surface of the curtain 20. Accordingly, when the curtain 20 is deployed (see FIG. 7B), the expansion of the curtain 20 is not significantly suppressed by the coupling with the first transverse tether 22, and the first transverse tether 22 is not suppressed. However, the side portion on the second side portion side of the curtain 20 urges the first transverse tether 22 on the curtain 20 to be in a state of being stretched earlier than a portion between the joint portions of the first transverse tether 22 of the curtain 20. Thus, the vehicle is reliably pulled to the front side and the lower side of the vehicle. In FIG. 7, the front and back surfaces of the curtain 20 between the joint portions at both ends of the first transverse tether 22 are sewn together to provide a double-sided sewing portion that adjusts the thickness in the vehicle width direction when the curtain 20 is deployed. However, this double-sided sewing portion may not be provided.

  In the present embodiment, since the other end joint portion of the first crossing tether 22 in the curtain 20 in the deployed state is located in the vicinity of the second pillar 12, the occupant 9 can It is easy to turn up the deployment tip side portion from the tension line 40 to the inside of the vehicle and escape from any one of the windows 2 to 4 to the outside of the vehicle. That is, the curtain 20 can be turned more greatly between the two end joint portions of the first transverse tether 22 and between the two end joint portions of the second transverse tether 22. If it is a part corresponding to 4, escape to the outside of the vehicle becomes easy. And if the other-end part joint part of the 1st crossing tether 22 in the curtain 20 exists in the vicinity of the 2nd pillar 12, the part between the both-ends joint part of the 1st crossing tether 22 will correspond to the window 3 and 4 Thus, the portion between the joint portions at both ends of the second transverse tether 22 becomes a portion corresponding to the window 2, and the passenger 9 can easily escape from the vehicle after the curtain 20 is deployed.

  Further, since the first and second crossing tethers 22 and 23 are coupled to the back surface (surface outside the vehicle) of the curtain 20 in the unfolded state, the occupant 9 and the first and second crossing tethers 22 and 23 It is possible to prevent the occupant 9 from escaping to the outside of the vehicle while preventing the interference of the occupant 9 and improving the protection of the occupant 9.

  In the first embodiment, the other end portion coupling portion of the first transverse tether 22 in the curtain 20 is located in the portion corresponding to the second pillar 12, but in the vicinity of the portion corresponding to the second pillar 12. It may be positioned, or may be positioned in a portion corresponding to the third pillar 12 or in the vicinity thereof. In this manner, the other end portion coupling portion of the first crossing tether 22 is located in a portion corresponding to the second pillar 12 or the third pillar 12 or in the vicinity thereof from the viewpoint of easy escape of the occupant 9 to the outside of the vehicle. However, the present invention is not limited to this, and the curtain 20 may be anywhere as long as it develops faster than the side part on the second side part side. However, as a part where the deployment is quick, it is preferable that the part is closer to the part where the inflator 21 (pipe 28) is connected and closer to the development tip.

  Further, in order to reliably pull the side portion on the second side of the curtain 20 from the initial stage of the curtain 20, the connecting portion of the inflator 21 in the curtain 20 is engaged with the engaging portion 44 when the curtain 20 is fully deployed. A portion that is more than a predetermined distance from (a portion where gas can hardly be supplied to the side portion on the second side portion at the initial stage of deployment of the curtain 20). It is preferable to join the ends.

(Embodiment 2)
FIG. 8 shows a second embodiment of the present invention (note that the same parts as those in FIG. 1 are denoted by the same reference numerals and detailed description thereof is omitted), and the other end coupling of the first transverse tether 22 in the curtain 20 is shown. The position of the part (which is also an end part binding part of the second transverse tether 23) is different from that of the first embodiment.

  That is, in this embodiment, the position of the other end joint portion of the first transverse tether 22 (also one end joint portion of the second transverse tether 23) in the curtain 20 in the unfolded state is the tension line 40 (first A straight line connecting one end portion of the transverse tether 22 and the other end portion of the second transverse tether 23), so that the first and second transverse tethers 22 and 23 are in a state where the curtain is in a development completed state. 20 in front view, it is located on the deployment tip side with respect to the tension line 40. Specifically, the other end portion joining portion of the first crossing tether 22 in the curtain 20 is substantially in the center in the vehicle front-rear direction to which the inflator 21 is connected (the center of the inflator 21 is closer to the center than in the first embodiment). It is located near the deployment tip. In the present embodiment, the first and second transverse tethers 22 and 23 are separate from each other, but may be integrally formed.

  Therefore, in the present embodiment, the other end portion of the first transverse tether 22 can be pulled so that the side portion on the second side portion side of the curtain 20 is deployed earlier than in the first embodiment. Since it is connected to the side, the side part can be deployed even earlier.

  Further, since the first and second crossing tethers 22 and 23 are located on the deployment tip side with respect to the tension line 40, even if the occupant 9 collides with the deployment tip side of the curtain 20 on the deployment tip side, both crossings The tethers 22 and 23 can receive the impact force of the curtain 20 without being beaten.

(Embodiment 3)
FIG. 9 shows a third embodiment of the present invention (note that the same parts as those in FIG. 3 are denoted by the same reference numerals and detailed description thereof is omitted), and the side part of the curtain 20 on the second side part side is shown. It is accommodated in the second side part.

  That is, in the present embodiment, the side portion on the second side portion side in the curtain 20 in the unfolded state is located on the second side portion in the accommodated state of the curtain 20 as shown by a two-dot chain line in FIG. It is set as the 2nd side part accommodating part 20a (2nd side part accommodating part) accommodated. The second side portion accommodating portion 20 a is not fixed to the inner panel 14 b of the fourth pillar 14 by the fixing member 55. And the expansion | deployment of the 2nd side part accommodating part 20a is made late | slower than the upper side part accommodating part 20b (1st side part accommodating part) accommodated in the upper side part in the curtain 20. As shown in FIG. Specifically, as described in the first embodiment, in addition to the inflator 21 being connected to the substantially central portion of the curtain 20 in the vehicle front-rear direction, the flow of gas to the second side portion accommodating portion 20a. There is provided a limiting unit 61 for limiting the above. The restricting portion 61 is formed by stitching the front and back surfaces of the curtain 20 and develops the second side portion accommodating portion 20a more slowly than the upper side portion accommodating portion 20b. Other configurations are the same as those of the first embodiment.

  In the present embodiment, it is necessary to deform the pillar trim 56 from the second side part of the side part (second side part accommodating part 20a) on the second side part side in the curtain 20 and pull it out to the side window part side. Thereby, the development of the side portion is further delayed. However, by providing the restricting portion 61 as described above, the development of the second side portion accommodating portion 20a is delayed with respect to the upper side portion accommodating portion 20b. That is, the deployment of the other end portion binding portion of the first tether 22 in the curtain 20 becomes even faster than the one end binding portion, and at the initial stage of the curtain 20 deployment, the second side portion accommodating portion 20a It is pulled with a large force toward the developed other end binding site. Therefore, even if the curtain 20 has the second side portion accommodating portion 20a, the entire curtain 20 can be deployed at an early stage as in the first embodiment.

(Embodiment 4)
FIG. 10 shows a fourth embodiment of the present invention, in which the configuration of the support member 36 is different from that of the first embodiment, and the other configurations are the same as those of the first embodiment. That is, in the present embodiment, the support member 36 that constitutes the support portion has a pin shape extending substantially in the vehicle width direction, and is fixed to the inner panel 14b of the fourth pillar 14 so as to protrude inward of the vehicle. Has been. The support member 36 is provided at the same height as that in the first embodiment. In the accommodated state of the curtain 20, both end portions of the string-like member 39 are positioned on the upper side side of the support member 36, and a substantially central portion in the length direction of the string-like member 39 is a lower portion of the support member 36. It is in a state of being wound around and engaged.

  When the curtain 20 is deployed, as in the first embodiment, the side portion on the second side portion side of the curtain 20 is pulled to the vehicle front side and the lower side, and the other end portion of the string-like member 39 or the vicinity thereof. Is pulled out to the side window side. In addition, the string-like member 39 slides and moves with respect to the support member 36, the engagement position of the string-like member 39 with the support member 36 moves to the proximal end side, and the engagement portion 44 eventually supports. The member 36 is brought into contact with the member 36 and restrained. As a result, as in the first embodiment, a tension line 40 that connects the engaging portion 44 and the connecting portion 37 is formed, and the first and second transverse tethers 22 and 23 are stretched along the tension line 40. (In FIG. 10, the tension line 40 and the second transverse tether 23 are not shown). Therefore, also in this embodiment, the same operational effects as those of the first embodiment can be obtained.

(Embodiment 5)
FIG. 11 shows Embodiment 5 of the present invention, and is provided with a guide member 65 that guides the side portion of the curtain 20 on the second side portion side when deployed.

  That is, in this embodiment, the guide member 65 is provided on the inner panel 14b of the fourth pillar 14. The guide member 65 is provided with a guide bar 65a extending in the direction in which the second side portion extends (the vertical direction in the present embodiment). On the other hand, one end of a guide band 66 that constitutes a part of the curtain 20 is coupled to a middle portion of the curtain 20 in the curtain developing direction (vertical direction) of the side portion on the second side portion side. The other end of the guide band 66 is formed in an annular shape so as to be hooked and engaged with the guide bar 65a. Note that the upper end of the guide bar 65 a of the guide member 65 is at the same height as the accommodated curtain 20 on the upper side, and the lower end of the guide bar 65 a is the middle position in the vertical direction of the third window 4. It is in.

  The guide band 66 is engaged with the upper end portion of the guide bar 65a in the accommodated state of the curtain 20, and when the curtain 20 is unfolded, the side portion of the curtain 20 on the second side portion side is vertically oriented. It moves downward while guiding, and engages with the lower end portion of the guide bar 65a to support and restrain the side portion in the developed state. Thus, in the present embodiment, the guide band 66 provided on the side portion on the second side portion side of the curtain 20 constitutes the engaging portion 44, and the lower end portion of the guide bar 65a constitutes the support portion. Become.

  Also in the present embodiment, one end of the first transverse tether 22 is coupled to the vicinity of the coupling portion of the guide band 66 in the curtain 20 (the vicinity of the engaging portion 44), and the other end is connected to the inflator 21. The vehicle is connected to a substantially central portion of the connected vehicle longitudinal direction. Also, one end of the second transverse tether 23 (not shown in FIG. 11) is coupled to the other end coupling portion of the first transverse tether 22 in the curtain 20, and the other end of the second transverse tether 23 is The curtain 20 is coupled to the vicinity of the coupling site of the upper front end support tether 38.

  Then, by the first transverse tether 22, one end portion of the guide band 66 deforms the pillar trim 56 and is pulled out to the side window portion side in the initial stage of the curtain 20. As described above, also in the present embodiment, it is necessary to pull out one end portion of the guide band 66 to the side window portion side, and the sliding resistance when the guide band 66 moves downward with respect to the guide bar 65a. Due to the influence, the side part of the curtain 20 on the second side part side tends to develop slowly, but the side part is pulled to the vehicle front side and the lower side by the first transverse tether 22, and the second side It is possible to prevent a delay in the development of the side part on the side part side.

  In the first to fifth embodiments, the curtain 20 is provided with the second crossing tether 23. However, the second crossing tether 23 is not always necessary, and the tension line 40 is formed so that the passenger 9 Can be adequately protected.

(Embodiment 6)
FIG. 12 shows Embodiment 6 of the present invention, in which a curtain airbag device is provided in a back window portion formed on a back door 51 of a vehicle. In the present embodiment, the back window portion has one back window 58, and the periphery of the back window portion includes an upper side portion, a lower side portion, a first side side portion (a side portion on the left side of the vehicle), and a second side. A substantially rectangular shape consisting of a side portion (side portion on the right side of the vehicle), more specifically, a substantially rectangular shape whose vehicle width direction is longer than the vertical direction (strictly speaking, a substantially trapezoidal shape whose upper side portion is shorter than the lower side portion) ). The lower side portion around the back window portion is located below the upper end of the seat back 8 a of the rear rear seat 8. As in the first embodiment, the curtain airbag device includes an inflatable portion that is deployed so as to cover the back window portion by inflating the inflated portion by gas injection, and the curtain 20. And an inflator 21 that is connected to a substantially central portion in the vehicle width direction (the direction in which the upper side extends) of the upper portion of the inflating portion by a pipe 28 and supplies gas to the inflating portion. Also in the present embodiment, as in the first embodiment, substantially the entire curtain 20 is the inflatable portion, but only the portion corresponding to the occupant seating position in the vehicle width direction of the rear rear seat 8 is inflated. You may comprise so that it may become a part.

  The curtain 20 is accommodated in a state in which the curtain 20 is folded in a bellows shape (may be in a state of being wound in a roll shape) on the upper side portion around the back window portion. The upper side portion in which the curtain 20 is accommodated may be the rear header 59 of the vehicle body 1 or the upper portion of the back window 58 in the back door 51. In the present embodiment, the curtain 20 is fixed to the vehicle body member of the rear header 59 by the fixing member 55 and accommodated in the rear header 59. Both ends of the curtain 20 in the housed state in the vehicle width direction (portions corresponding to both sides of the curtain 20 in the unfolded state) are located in the vicinity of both ends of the upper side. The curtain 20 is developed from the upper side portion to the lower side, and the developed leading end portion reaches the lower side portion (a little exceeds the back window side edge of the lower side portion).

  Support members 36 and 36 are provided in the respective portions of the first and second side portions separated from the upper side portion around the back window portion. Both the support members 36 and 36 are the same as those of the first embodiment, and the through holes 36a of the support member 36 are seat backs of the rear rear seat 8 at the first and second side portions, respectively. It is provided to be positioned at a height above the upper end of 8a.

  The first and second side portions where the support members 36 and 36 are respectively provided are on the left and right sides of the back door 51 when the curtain 20 is accommodated in the rear header 59 as in this embodiment. When the curtain 20 is housed in the upper part of the back window 58 in the back door 51, the left and right side parts of the back window 58 in the back door 51 are configured. . The vehicle body portions located on the left and right sides of the back door 51 and the vehicle compartment sides of the left and right sides of the back window 58 of the back door 51 are rigid trim members made of the same material as the pillar trim 56 in the first embodiment. Covered.

  As in the first embodiment, in the accommodated state of the curtain 20, the string-like member 39 is inserted into the through hole 36a of each support member 36, and its substantially central portion is engaged with the through hole 36a. Both ends of the string-like member 39 that engages with the support member 36 are respectively coupled to the intermediate portion of the curtain 20 in the unfolded state on the left side of the curtain 20 in the curtain unfolding direction (vertical direction) and the unfolding tip 20c. The both ends of the string-like member 39 engaged with the support member 36 on the right side of the vehicle are located in the middle of the curtain deployment direction (vertical direction) and the deployment tip 20c of the side of the vehicle right side of the curtain 20 in the deployed state. Each is connected. The base end portions of both the string-like members 39, 39 or the base end connecting portions of the curtain 20 are the engaging portions 44, 44, respectively. Thereby, when the curtain 20 is unfolded, the engaging portions 44 and 44 engage with the through holes 36a and 36a of the supporting members 36 and 36, respectively. A tension line 40 to be connected is formed. In the present embodiment, the tension line 40 is formed to extend horizontally.

  Similarly to the first embodiment, two first crossing tethers 22 and 22 are provided along the tension line 40 on the back surface (vehicle rear surface) of the curtain 20 in the unfolded state. One end portion of each first transverse tether 22 is coupled to each engaging portion 44 in the curtain 20 or its vicinity, and the other end portion is developed more than the substantially central portion in the vehicle width direction of the curtain 20, that is, both side portions. It is connected to the early part (on the tension line 40). In the present embodiment, since the two first transverse tethers 22 and 22 play the same role as the second transverse tether in the first to fifth embodiments, the second transverse tether is not provided. The two first transverse tethers 22 and 22 may be integrally formed with each other or may be separate. Further, the other end portion of each first transverse tether 22 may be coupled to the deployment tip side with respect to the tension line 40 at the substantially central portion in the vehicle width direction of the curtain 20.

  The height positions of the tension line 40 and the first transverse tether 22 are such that the occupant 9 seated on the rear rear seat 8 has the average physique of an American adult male and the head of the occupant 9 It is made to become lower than the height position of the center of gravity.

  Also in the present embodiment, as in the first embodiment, the tension line 40 is formed on the curtain 20, and the first transverse tethers 22 and 22 are provided along the tension line 40, so that the impact force caused by the collision of the occupant 9 is achieved. The occupant 9 can be reliably protected by receiving the vehicle.

  Similarly to the first embodiment, at the initial stage of deployment of the curtain 20, both side portions of the curtain 20 can be pulled to the center side in the vehicle width direction and downward by the first transverse tethers 22. Development delay can be prevented.

  In Embodiment 6, both sides of the curtain 20 in the unfolded state are positioned in the vicinity of both ends of the upper side (rear header 59) around the back window in the accommodated state of the curtain 20. As in the third embodiment, the side portion on the first side portion side of the curtain 20 is defined as a first side portion containing portion that is accommodated in the first side portion, and the second side portion side of the curtain 20 is used. This side part may be a second side part accommodating part accommodated in the second side part.

  In Embodiment 6, the lower end of the curtain 20 in the unfolded state covers the lower side of the back window, but the curtain 20 is deployed from the upper side to a position above the lower side. You may comprise. In this case, it is preferable that the curtain 20 is configured to extend from the upper side portion to a position below the upper end of the seat back 8a of the rear rear seat 8. In other words, due to the presence of the seat back 8 a of the rear rear seat 8, it is the head of the occupant 9 that collides with the curtain 20 at the time of rearward collision of the vehicle, and the center of gravity of this head is above the tension line 40. Therefore, even if the curtain 20 does not cover the entire vertical direction of the back window portion, the impact force of the head of the occupant 9 can be received well.

  Furthermore, although the back window portion has one back window 58, a plurality of back windows may be provided as in the first embodiment.

  In the first to sixth embodiments, the curtain airbag device is provided in each of the side window portion and the back window portion of the vehicle. However, the curtain airbag device may be provided in the window portion of the roof of the vehicle. It can also be provided in a window section or a window section of a building such as a house, building, or space station.

  Further, the shape of the window portion does not have to be a substantially square shape, and may be a substantially triangular shape. In this case, the third side is connected to the end of the second side opposite to the first side, and the first side is connected to the end of the third side opposite to the second side. It will be connected. Alternatively, other polygonal shapes may be used. Moreover, each side part around the window part may have any shape including a straight line shape and an arc shape.

  Further, the number of windows in the window portion may be one or two or more. When the number of windows is 2 or more, the window portion may have a polygonal shape that substantially surrounds the edge edge of the window surrounding the two or more windows.

  INDUSTRIAL APPLICABILITY The present invention is useful for a curtain airbag device including a curtain that covers a window portion of a vehicle or a building, and particularly useful when provided in a side window portion or a back window portion of a vehicle.

It is the figure seen from the vehicle interior side of the vehicle which shows the curtain airbag apparatus which concerns on Embodiment 1 of this invention. It is the II-II sectional view taken on the line of FIG. It is the principal part enlarged view seen from the vehicle interior side which expands and shows the rear-end part upper part part of a vehicle. It is the IV-IV sectional view taken on the line of FIG. It is the VV sectional view taken on the line of FIG. FIG. 4 is a view corresponding to FIG. 3 showing a curtain completion state. (A) is a fragmentary sectional view which shows the relationship between a curtain and the 1st crossing tether when extending so that the 1st crossing tether may not loosen in the state before the expansion part of a curtain expands, (b) It is a fragmentary sectional view which shows the state at the time of the completion | finish of expansion | deployment of the curtain. FIG. 3 is a view corresponding to FIG. 1 showing Embodiment 2 of the present invention. FIG. 7 is a view corresponding to FIG. 6 showing Embodiment 3 of the present invention. It is a principal part perspective view which shows Embodiment 4 of this invention. It is a principal part perspective view which shows Embodiment 5 of this invention. It is the figure seen from the vehicle outer side (vehicle rear side) which shows Embodiment 6 of this invention.

1 Car body 2-4 Wind 11 First pillar (front pillar)
12 Second pillar (intermediate pillar)
13 Third pillar (intermediate pillar)
14 Fourth pillar (second side) (rear pillar)
20 Curtain 21 Inflator (Gas supply device)
22 First transverse tether (first transverse connecting member)
23 Second transverse tether (second transverse connecting member)
32 Roof side rail (first side)
36 Support member (support part)
39 String-like member 44 Engaging portion 58 Back window 65a Guide bar (supporting portion)

Claims (5)

A curtain airbag device provided in a window portion having one or more windows,
A curtain that has an inflating portion into which gas is injected, is accommodated in a first side portion around the window portion, and expands so as to cover the window portion by expansion of the inflating portion by the gas injection;
A gas supply device for supplying the gas to the expansion portion of the curtain;
A support portion provided on a second side portion connected to the first side portion around the window portion;
It is provided on the side of the second side of the curtain in the unfolded state, and is positioned closer to the first side of the support than the support in the accommodated state of the curtain. An engagement portion that moves from the first side portion toward the support portion and engages the support portion as the deployment tip of the curtain moves in the curtain deployment direction;
A first transverse connection in which one end portion is coupled to the engaging portion or the vicinity thereof in the curtain, and the other end portion is coupled to a portion of the curtain that develops faster than the side portion on the second side side. With members ,
The engagement portion is engaged with the support portion so that a tension line that crosses the curtain is formed at an intermediate portion in the deployment direction of the curtain in a deployed state.
The engaging portion is configured to be pulled to the front side in the curtain deploying direction through the first transverse connecting member when the curtain is deployed by a portion that is deployed faster than the side portion on the second side portion side. A curtain airbag device characterized by being made . The curtain airbag device according to claim 1,
When the first transverse connecting member is stretched so as not to loosen in a state before the inflated portion of the curtain is inflated, a portion of the curtain between the joint portions at both ends of the first transverse connecting member is loosened A curtain airbag device characterized by the above. The curtain airbag device according to claim 1 or 2,
In the curtain in the unfolded state, the edge located on the opposite side to the one end joint portion of the first transverse connecting member across the other end joint portion of the first transverse connecting member is in the unfolded state of the curtain And is configured to be restrained around the window portion located in the vicinity of the edge portion,
The tension line is formed at an intermediate portion in the unfolding direction of the curtain in the unfolded state by restraining the edge and engaging the support portion with the engaging portion.
One end is coupled to the other end coupling portion of the first transverse connecting member in the curtain or the vicinity thereof, and the other end is constrained around the window portion in the curtain or the vicinity thereof Or a curtain air bag apparatus comprising a second transverse connecting member coupled to the periphery of the window portion for restraining the edge portion. The curtain airbag device according to claim 3,
The first and second transverse connecting members are substantially along a straight line connecting one end portion of the first transverse connecting member and the other end portion of the second transverse connecting member in a front view of the curtain in the unfolded state. Or a curtain airbag device, which is positioned on a deployment tip side with respect to the straight line. In the curtain airbag device according to any one of claims 1 to 4,
The curtain is deployed so as to cover a window portion having a plurality of windows on the vehicle side,
The second side portion is constituted by a rear pillar located on the rearmost side of the vehicle,
The other end portion of the first transverse connecting member is a portion corresponding to an intermediate pillar between the front pillar located on the foremost side of the vehicle and the rear pillar in the curtain in the unfolded state or the vicinity thereof. A curtain airbag device characterized in that the curtain airbag device is coupled to the curtain airbag device.

Images