JP2008037248A - Curtain air bag device and method for fitting the device to window - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To protect an occupant in a cabin by surely imparting tension to a curtain 20 completing its deployment, by surely mounting a curtain air bag device imparting tension to the curtain 20 after deployment completion via a string member 39 engaged to a supporting member 36 on a window of a vehicle within a prescribed fitting time, while preventing the tangling of the string member 39 around the supporting member 36. <P>SOLUTION: The supporting member 36 is constituted of an annular member having an opening at the radial direction inside in advance. The string member 39 is inserted into the opening of the supporting member 36. One end of the string member 39 is connected to a prescribed part on the side of the second side of the curtain 20, and the other end is connected to the prescribed part on the side of the second side of the curtain 20 to form a loop-shaped loop part 75. A loop forming process for holding the supporting member 36 by the loop part 75 is performed at a place separate from a vehicle fitting line for fitting the curtain air bag device to the vehicle. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention belongs to a technical field related to a method of assembling a curtain airbag device to a window portion.

  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. And a tension applying means for pulling the lower part of the front end of the airbag toward the front side of the vehicle or the lower part of the rear end toward the rear side of the vehicle as the airbag is deployed downward. It has been proposed to do.

  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, even in a vehicle with less overhang from the rear end of the airbag to the rear of the vehicle by providing an annular wire (string member) spanned between the airbag side fulcrum and the upper fulcrum and lower fulcrum on the vehicle body side. It has been proposed to apply a necessary and sufficient tension along the lower edge of the airbag when the deployment is completed.

Furthermore, in patent document 3, while providing the rod-shaped guide member extended in a vehicle body up-down direction along a pillar, a loop-shaped connection belt | band | zone (string-shaped member) is attached to the lower corner edge vicinity of the rear-end part of an airbag, It has been proposed that the rear end portion of the airbag is connected to the guide member by extending the connecting band around the guide member so that 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, in the curtain airbag device as described above, in order to protect the passengers in the passenger compartment, it is necessary to smoothly and surely deploy the curtain when the vehicle collides, and to surely generate tension on the curtain after the deployment is completed. There is.

  However, in the curtain airbag device as shown in Patent Documents 1 to 3 described above, for example, when an operator mistakenly attaches the curtain airbag device to the vehicle while the string-like member is twisted or tangled. In addition, there is a problem that the curtain causes poor deployment in the event of a vehicle collision. In particular, in the one disclosed in Patent Document 3, there is a high possibility that the string-like member is twisted when the string-like member is hung around the guide member, and as a result, the above-described unfolding failure is likely to occur.

  In addition, when the operator does not sufficiently sew the string-like member to the curtain, the string-like member may be detached from the curtain in the curtain unfolded state, so that sufficient tension cannot be applied to the curtain. There's a problem.

  Therefore, in order to reliably assemble the curtain airbag device to the vehicle, it is conceivable to set a long assembly time for the assembly operation.

  However, for example, in a vehicle assembly line in which predetermined parts are assembled to a vehicle conveyed by a conveyor, the curtain airbag device is reliably and without delay with respect to a vehicle that continuously flows on the vehicle assembly line. It is necessary to assemble, and extending the assembling time adversely affects the productivity of the vehicle.

  The present invention has been made in view of such a point, and the object of the present invention is to devise a method for assembling the curtain airbag device to a window portion of a vehicle, etc. While preventing the member from being twisted or entangled with the support member, the curtain airbag device is quickly and reliably assembled to the window portion within a predetermined assembling time, thereby realizing high productivity. In addition to improving the deployability of the curtain, it is necessary to reliably apply tension to the curtain that has been deployed to easily and reliably prevent the curtain from being moved by a person or object inside the vehicle or building. It is in.

  In order to achieve the above object, according to the first aspect of the present invention, the support member is previously constituted by an annular member having an opening portion radially inward, and the string member is inserted into the opening portion of the support member. In addition, one end of the string-like member is coupled to a predetermined portion on the second side portion side of the curtain, and the other end is connected to a predetermined portion on the second side portion side of the curtain or the string-like member. Aside from the loop forming step of forming a loop-like loop portion by being coupled to its own predetermined portion and holding the support member by the loop portion, the curtain is fixed to the first side portion, and the support member A fixing step of fixing the second side portion to the second side portion is performed.

  Specifically, the present invention is directed to an assembly method for assembling a curtain airbag device provided in a window portion having one or more windows to the window portion.

  The curtain airbag device includes an inflating portion into which gas is injected and is folded and accommodated at least at a first side around the window portion, and at least the window portion is inflated by inflating the inflating portion by injecting the gas. A curtain that expands so as to cover a part, a gas supply device that supplies the gas to the expansion portion of the curtain, and a support member that has a support portion provided on a second side that follows the first side, 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 toward the support portion from the first side portion or the first side portion as the leading end portion of the curtain moves in the deployment direction of the curtain. Provided with the support member It consists of an annular member having an opening portion on the radially inner side, and the engaging portion is a string-like member coupled to a side portion on the second side of the curtain, or a coupling portion between the string-like member and the curtain The string-like member is inserted through the opening of the support member, and one end of the string-like member is coupled to a predetermined portion on the second side of the curtain, and further The other end of the string-like member inserted through the opening and having one end coupled to the side of the curtain on the second side, the predetermined part of the side of the curtain on the second side, or the string-like member itself A loop-like loop portion including the engagement portion is formed by the string-like member itself or the string-like member and the side portion on the second side of the curtain. A loop forming step of holding the support member by the portion, and after the loop forming step, The is fixed to the first side section, is intended to include a fixing step of fixing the support member to said second side portion.

  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 second side of the curtain moves from the first side around the window part toward the supporting part provided on the second side, and moves to the supporting part. Engage.

  When the engaging portion engages with the support portion in this manner, the engaging portion is restrained by the support portion. And by constraining the edge part in the curtain that also crosses the curtain from the engaging part, the line connecting the two restraining parts has a tension when an external pressing force is applied to the curtain. The resulting tension line. At this time, since the tension line is formed, the curtain is not pushed and moved by the impact force, the impact force can be received, and a person or the like can be reliably protected. It becomes like this.

  Further, when the curtain airbag device is assembled to the window portion, the string-like member is inserted into the opening of the support member, and one end of the string-like member is connected to the side portion on the second side of the curtain. The other end of the string-like member that is connected to the predetermined portion of the curtain and is inserted into the opening and is connected to the side of the second side of the curtain is connected to the side of the second side of the curtain. A loop shape including the engagement portion with the string-like member itself or the string-like member and a side portion on the second side of the curtain. After the loop forming step of forming the loop portion and holding the support member by the loop portion, the curtain is fixed to the first side portion and the support member is fixed to the second side portion. A fixing step is performed.

  Therefore, the curtain airbag device can be reliably prevented from being assembled to the window portion while the string-like member is twisted or entangled with the support member. That is, for example, when the loop forming step is performed after the curtain and the support member are fixed to the window portion, the work space is limited, so that workability is deteriorated and there is a high possibility of causing a mounting failure. .

  However, according to the present invention, by performing the loop forming step at a place different from the fixing step, for example, a work space for performing the loop forming step is sufficiently secured to improve workability. Can be made. As a result, it becomes possible to more reliably prevent twisting and entanglement of the string-like member when the loop is formed. Therefore, at the time of curtain deployment, it is possible to reliably prevent the curtain from being hindered by the string-like member being entangled with the support member.

  In addition, the support member is configured by an annular member in advance. Therefore, when the curtain deployment is completed, the string-like member is sandwiched in a gap between the support member and the second side around the window portion to which the support member is attached. It can be prevented from being caught or caught. Therefore, tension can be reliably applied to the curtain in the unfolded state via the string-like member. Further, when the support member is assembled to the second side portion around the window portion, the string-like member is not sandwiched between the gaps. Accordingly, since the curtain unfolding start operation can be performed smoothly, the curtain unfoldability can be further improved.

  For example, when the curtain airbag device is mounted on a vehicle, the curtain can be reliably deployed in the vehicle compartment when the vehicle collides or rolls over. Further, it is possible to sufficiently apply tension to the curtain that has been deployed, and as a result, it is possible to easily prevent the curtain from being pushed and moved by an occupant or an object in the vehicle interior. Therefore, it is possible to further improve the occupant protection performance of the curtain airbag device.

  The invention of claim 2 is directed to an assembling method for assembling a curtain airbag device provided in a window portion having one or more windows to the window portion.

The curtain airbag device includes an inflating portion into which gas is injected and is folded and accommodated at least at a first side around the window portion, and at least the window portion is inflated by inflating the inflating portion by injecting the gas. A curtain that expands so as to cover a part, a gas supply device that supplies the gas to the expansion portion of the curtain, and a support member that has a support portion provided on a second side that follows the first side, 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 engaging portion that moves from the first side portion toward the support portion and engages with the support portion as the leading end portion of the curtain moves in the deployment direction of the curtain,
The support member is formed in an annular or U-shape that is partially open in the circumferential direction, and is formed so that the cross-sectional area of both end portions is larger than the cross-sectional area of the intermediate portion excluding the both end portions. The engagement portion is formed by a string-like member coupled to the side portion on the second side of the curtain, or a coupling portion between the string-like member and the curtain, and the string-like member One end of the string-like member is coupled to a predetermined portion on the side of the second side of the curtain, and the other end of the string-like member is wound around the intermediate portion of the support member. The loop member is coupled to a predetermined portion of the loop member itself to form a loop loop portion including the engagement portion and incapable of passing through both ends of the support member. A loop forming step for holding the support member by a portion, and the loop forming work Later, the curtain is fixed to the first side section above, it is intended to include a fixing step of fixing the support member to said second side portion.

  As a result, it is possible to prevent both end portions of the support member from passing through the loop portion and falling off from the loop portion, and thus the support member can be reliably held by the loop portion.

  In addition, when the curtain is completely deployed, the loop portion cannot pass through both ends of the support member. Therefore, the string-like member constituting the loop portion is formed between the support member and the second side portion around the window portion. It can be surely prevented from being caught or caught between them. Therefore, when the curtain deployment is completed, it is possible to reliably apply tension to the curtain and reliably prevent the curtain from being pushed and moved by a person or an object inside the vehicle or the building.

In invention of Claim 3, in the assembly method of the curtain airbag apparatus of Claim 1,
In the loop forming step, after one end of the string-like member is stitched and joined to a predetermined portion on the second side portion of the curtain, the other end of the string-like member is connected to the opening of the support member. And a step of sewing and joining to a predetermined portion on the side of the second side of the curtain after the insertion.

  Thereby, the sewing operation of the string-like member can be performed at a place different from the fixing step. Therefore, for example, when the curtain airbag device is assembled to the window portion of the vehicle, there is no need to perform a sewing operation in a narrow space in the vehicle interior. Therefore, the string-like member is attached to the curtain or the string-like member itself. It can be securely stitched and bonded to the location.

In the invention of claim 4, in the method of assembling the curtain airbag device of claim 3,
In the loop forming step, before the curtain is folded, one end of the string-like member is sewn and joined to an intermediate portion in the unfolding direction on the second side of the curtain. Later, after folding the curtain into a predetermined state, the other end of the string-like member is inserted into the opening of the support member, and the front end in the unfolding direction at the second side of the curtain It is assumed that it is a step of stitching and bonding to the head.

  This makes it possible to easily perform a suturing operation in which one end of the string-like member is stitched to the curtain and the other end of the string-like member is stitched.

  That is, when the curtain is folded, it is difficult to specify a stitched portion for stitching the string-like member. However, according to the present invention, the stitched portion after folding the curtain is moved in the curtain deployment direction. Compared to the case where the stitched part after curtain folding is made the middle part in the curtain deployment direction by looking for the end part on the front side in the deployment direction of the curtain, even after folding the curtain, by using the front end part. Can be easily identified.

  Further, the stitching operation for stitching the other end of the string-like member to the curtain can be performed in the state where the curtain is folded as described above, and thus the work space necessary for the stitching operation is not required.

  According to a fifth aspect of the present invention, in the curtain airbag device assembling method according to any one of the first to fourth aspects, the curtain airbag device is provided in a window portion of a vehicle, and the loop formation is performed. The process is a process performed at a predetermined place other than the vehicle assembly line for assembling predetermined parts to the vehicle while the vehicle is conveyed by a conveyor, while the fixing process is performed on the vehicle assembly line. It is assumed that the process is performed.

  As a result, it is not necessary to perform a stitching operation on the vehicle assembly line in order to form the loop portion. Therefore, the curtain airbag device can be reliably assembled to the vehicle flowing on the vehicle assembly line without delay. Can be attached.

  Further, there is no need to perform the sewing operation in a relatively narrow vehicle cabin, and therefore a sufficient working space for performing the sewing operation can be secured. As a result, workability is improved, and the string-like member can be securely stitched and coupled to the curtain. Therefore, it is possible to prevent the string-like member from being detached from the curtain at the time of curtain deployment or when the curtain is completed due to the stitching failure of the string-like member, so that the curtain is reliably deployed in the vehicle interior and the curtain after the deployment is completed. It is possible to reliably apply tension to the.

  The invention of claim 6 is directed to a curtain airbag device provided in a window portion having one or more windows.

  And it has an expansion part into which gas is injected, is folded and stored in at least the first side part around the window part, and covers at least a part of the window part by the expansion of the expansion part by the gas injection A curtain that expands to the curtain, a gas supply device that supplies the gas to the expansion part of the curtain, a support member that has a support part provided on a second side that follows the first side, and the first part of the curtain Provided on the side of the two sides, and in the accommodated state of the curtain, is positioned on the first side of the support, and the leading end of the curtain is expanded in the direction of the curtain by the expansion of the expansion. And an engagement portion that moves from the first side to the support portion and engages with the support portion, and the support member has an opening portion on the radially inner side. Consisting of an annular member, above The joint portion is formed by a string-like member joined to a predetermined portion of the side portion on the second side of the curtain or a joint portion of the string-like member and the curtain, and the string-like member is In a state of being inserted through the opening of the support member, one end is coupled to a predetermined portion on the second side portion of the curtain and the other end is a predetermined portion on the second side portion of the curtain or It is assumed that it is connected to a predetermined part of the string-like member itself.

  Thus, the same effect as that attained by the 1st aspect can be attained.

  As described above, according to the curtain airbag device assembling method of the present invention, the support member is configured in advance by an annular member having an opening on the radially inner side, and the string-like member is attached to the support member. While being inserted into the opening, one end of the string-like member is coupled to a predetermined portion on the second side of the curtain, and the other end is a predetermined portion on the second side of the curtain or Separately from the loop forming step in which a loop-shaped loop portion is formed by coupling to a predetermined portion of the string-like member and the support member is held by the loop portion, the curtain is attached to the first side portion of the window portion. In addition to fixing the support member to the second side portion, the curtain airbag device is attached to the window portion while the string-like member is twisted or entangled. Securely prevent assembly Rukoto can.

  Therefore, for example, when the curtain airbag device is mounted on a vehicle, the curtain is reliably deployed in the passenger compartment when the vehicle collides or rolls over, and tension is reliably applied to the curtain after the deployment is completed. Can do. Therefore, the passenger | crew protection performance by this curtain airbag apparatus can be improved further.

  In addition, since the support member is formed of an annular member, the cord-like member is prevented from being caught or caught between the support member and the second side to which the support member is attached when the curtain deployment is completed. be able to. Accordingly, it is possible to reliably apply tension to the curtain after completion of the deployment via the string-like member. Further, when the support member is assembled to the second side portion, the string-like member is not sandwiched between the support member and the window portion, and therefore the curtain unfolding start operation can be performed smoothly. As a result, the deployability of the curtain can be further improved.

  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 curtain airbag device 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, a tape-shaped transverse tether 22, and two front ends. Supporting tethers 38 and 38 and a string-like member 39 are provided. 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, and is housed in the upper side portion around the side window portion or a part of the first side portion together with the crossing tether 22. 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 on the roof panel 31 by a welt together with the roof side rail 32. 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 the lower end portion 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. The upper one of these front end support tethers 38, 38 has a tension line 40 on the curtain 20 together with support (restraint) of the side portion of the curtain 20 on the second side portion side (vehicle rear side), which will be described later. 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. The support member 36 is disposed in a portion separated from the upper side portion of the inner panel 14b of the fourth pillar 14 (the vehicle body constituting the fourth pillar 14). 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. The distance between the support member 36 and the side window portion side edge (third window 4 side edge) of the fourth pillar 14 is shorter than L described later. In the present embodiment, the support member 36 is the second side portion. Are arranged in the vicinity of the side edge of the third window 4. 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 39a of the string-like member 39 is coupled to the intermediate portion of the curtain 20 in the unfolded state in the curtain unfolding direction (vertical direction) of the side portion on the second side portion side (vehicle rear side). . On the other hand, the other end portion 39b of the string-like member 39 is on the deployment tip portion side with respect to the one end joint portion on the side portion on the second side portion side of the curtain 20 ( deployment tip portion 20a in this embodiment). Is bound to. 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.

When the curtain 20 is deployed, the deployment tip 20a moves to the lower side, which is the front side in the curtain deployment direction, and the other end 39b of the string-like member 39 (hereinafter referred to as the tip 39b) is also lowered. Move to. 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 tip end portion 39b of the string-like member 39. The tip 39b of the member 39 comes out into the vehicle compartment through the gap between the pillar trim 56 and the third window 4. 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, In plan view, the angle θ between the third window 4 side edge of the pillar trim 56 and the vicinity of the rear end of the vehicle on the vehicle outer edge of the curtain 20 is an acute angle. The 3 window 4 side edge portion is easily deformed toward the vehicle interior side, and the tip end portion of the string-like member 39 is easily brought out into the vehicle interior. In addition, since the inflator 21 is connected to the substantially central portion of the curtain 20 in the vehicle front-rear direction, the curtain 20 starts to unfold from the substantially central portion of the vehicle front-rear direction. Tending to be pulled toward the center of the direction), which makes it easier for the tip of the string-like member 39 to go out into the vehicle compartment.

When the deployment tip 20a of the curtain 20 ( tip of the string-like member 39) is positioned below the height position of the support member 36, the curtain 20 moves further downward from the deployment tip 20a . As the string member 39 is moved, the string member 39 slides and moves with respect to the through hole 36a of the support member 36, and the engagement position of the string member 39 with the through hole 36a is the one end portion (hereinafter referred to as the base end portion). 39a) side. As a result, the base end portion 39a of the string-like member 39 or the base end connecting portion of the curtain 20 moves toward the support member 36 and eventually enters the through hole 36a of the support member 36, but cannot enter. Then, it comes into contact with and engages with the opening peripheral edge of the through hole 36a (see FIG. 6). It should be noted that both the base end joint portion and the tip end joint portion of the curtain 20 move to the front side (that is, the lower side) in the curtain deployment direction due to the expansion of the gas, so that a large tension acts on the string-like member 39. hard. Further, the base end portion 39 a of the string-like member 39 or the base end portion connecting portion of the curtain 20 is formed through the gap between the pillar trim 56 and the third window 4 immediately before the engagement with the through hole 36 a of the support member 36. It enters into the four pillars 14 and engages with the support member 36.

  When the deployment of the curtain 20 is completed by the engagement between the proximal end 39a of the string-like member 39 or the proximal end coupling portion of the curtain 20 and the through hole 36a of the support member 36, the proximal end of the curtain 20 The coupling site or its vicinity is restrained by the support member 36. Thus, the base end portion 39a of the string-like member 39 or the base end joint portion of the curtain 20 constitutes an engaging portion 44 (see FIG. 6) that engages with the support member 36, and the support member 36 (particularly, The through hole 36a) constitutes a support part.

  On the other hand, the vehicle front side end portion of the curtain 20 is supported by the two front end support tethers 38. With this support and the engagement of the engagement portion 44 with the support member 36, the engagement portion 44 and the coupling portion 37 (or the upper side of the engagement portion 44 and the curtain 20) in the front view of the curtain 20 in the unfolded state. The tension line 40 of the curtain 20 is a straight line connecting the front end support tether 38), and even if an external force is applied to the curtain 20 on the tension line 40, the curtain 20 is not beaten. 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. Even if the occupant 9 is smaller than the average physique of an American adult male, the lower end edge of the curtain 20 in the deployed state is positioned below the lower end edges of the windows 2 to 4 so that the upper end of the curtain 20 Since a high tension is generated from the edge to the lower edge, the head of the small occupant 9 can be reliably protected.

  Further, in the present embodiment, a crossing tether 22 is provided on the back surface (surface outside the vehicle) of the curtain 20 in the unfolded state so as to cross the curtain 20. The transverse tether 22 is provided along the tension line 40. That is, the vehicle front side end portion of the transverse tether 22 is coupled to the back surface of the curtain 20 near the coupling portion of the upper front end support tether 38, and the vehicle rear side end portion of the transverse tether 22 is coupled to the string-like member of the curtain 20. 39 is coupled to the back surface in the vicinity of the proximal end portion coupling portion 39 (near the engaging portion 44). Thereby, when the curtain 20 is unfolded, the tension line 40 is formed and the transverse tether 22 is stretched along the tension line 40, thereby preventing the curtain 20 from being turned. Further, since the crossing tether 22 is coupled to the rear surface of the curtain 20 in the unfolded state, the interference between the occupant 9 and the connecting tether 22 is prevented, and the protection of the occupant 9 is improved. Escape to can be performed more reliably. The crossing tether 22 is not always necessary, and the occupant 9 can be sufficiently protected only by forming the tension line 40.

  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.

  Next, an assembly method for assembling the curtain airbag device to the side window portion will be described with reference to FIGS.

  First, a support member constituted by the curtain 20 to which the inflator 21 is connected, the front end support tether 38, the transverse tether 22, the string-like member 39, and an annular member having an opening portion radially inward. 36 is prepared in advance.

  Thereafter, as shown in FIG. 7, the prepared curtain 20 is expanded and the curtain is set in a deployed state before the gas is injected. Here, the left side in FIG. 7 is a side corresponding to the vehicle front side of the curtain 20 when the curtain 20 is attached to the vehicle, and the right side is a side corresponding to the vehicle rear side of the curtain 20. Moreover, the lower side in FIG. 7 is a side corresponding to the front side in the curtain unfolding direction. Hereinafter, in FIG. 7, the left side and the right side of the curtain 20 are referred to as the vehicle front side and the vehicle rear side, respectively, and the lower side of the curtain 20 is described as the front side in the deployment direction of the curtain 20. 8 and 9 will be described in the same manner.

  One end portion of the two front end support tethers 38, 38 is provided at two positions, a predetermined 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 joined together by stitching. Here, the predetermined portion is determined from the height position of the tension line 40 previously determined in the design stage.

  Then, the crossing tether 22 is disposed on the back surface of the curtain 20 along the tension line 40, and both ends are sewn and coupled to the curtain 20.

  Further, one end of the string-like member 39 is stitched and joined to the middle portion in the deployment direction at the end of the curtain 20 on the vehicle rear side, and after the stitching, the curtain 20 is folded in a bellows shape, The other end of the string-like member 39 is inserted into the opening of the support member 36 and joined to the end of the curtain 20 in the unfolding direction by sewing (see FIG. 8). In this way, a loop-shaped loop portion 75 is formed, and the support member 36 is held by the loop portion 75 (corresponding to a loop forming step). In the present embodiment, the curtain 20 is folded in a bellows shape, but the present invention is not limited to this. For example, the curtain 20 may be folded in a roll shape.

  Thereafter, both ends of the curtain 20 folded in the above-mentioned direction in the vehicle front-rear direction are folded back toward the vehicle front-rear direction intermediate portion side of the curtain 20 and bundled together with the string-like member 39 and fixed with a tape 71. (See FIG. 9).

  Thus, the inflator 21, the curtain 20, the front end support tether 38, the crossing tether 22, the support member 36, and the string-like member 39 are unitized as one unit (hereinafter referred to as a curtain airbag unit 70).

  The curtain airbag unit 70 is transported to an assembly factory for assembling the vehicle, and assembled to the vehicle at a vehicle assembly line 250 (see FIG. 10) installed in the assembly factory.

  The vehicle assembly line 250 is for transporting a vehicle from the upstream side of the line (left side in FIG. 10) to the downstream side of the line (right side in FIG. 10) by a conveyor and assembling predetermined parts to the vehicle being transported. An assembly portion 1X for assembling the airbag unit to a vehicle is provided.

  Further, in the vicinity of the assembly location 1X on the side of the vehicle assembly line 250, an airbag unit placement space 202 is provided for placing the curtain airbag units 70 side by side.

  Then, the worker M2 takes out one unit from the curtain airbag unit 70 arranged in the airbag unit mounting space 202 and sequentially assembles it in the side window portion of the vehicle flowing through the vehicle assembly line 250. I will go with it.

  Specifically, the worker first removes the tape 71 wound around both ends of the curtain airbag unit 70 and then attaches the curtain 20 of the curtain airbag unit 70 to the inner panel 32b constituting the roof side rail 32. Fix it. More specifically, the mounting hole 76 provided in the upper end portion of the curtain 20 and the mounting hole (not shown) provided in the inner panel 32b corresponding to the mounting hole 76 coincide with each other. While aligning, the said pin-shaped fixing member 55 is penetrated to both attachment holes, and the curtain 20 is fixed to the inner panel 32b.

  Further, after the curtain is fixed, the support member 36 is fixed to the second side portion (fourth pillar 14) connected to the upper side portion around the side window portion (corresponding to a fixing step).

  Specifically, support member mounting holes (not shown) provided at both ends of the support member 36 are aligned with mounting screw holes (not shown) provided in the fourth pillar 14. In addition, the bolts 53 are inserted into the support member mounting holes and screwed into the mounting screw holes to fix the support member 36 to the fourth pillar 14. In this embodiment, the support member 36 is fixed to the fourth pillar 14 after the curtain 20 is fixed to the inner panel 32b. However, the present invention is not limited to this, and the support member 36 is fixed. The curtain 20 may be fixed later.

  As described above, in the first embodiment, the loop forming process is performed at a place different from the vehicle assembly line 250.

  Accordingly, it is possible to reliably prevent the curtain airbag device from being assembled to the side window portion while the string-like member 39 is twisted or entangled with the support member 36. That is, for example, when the loop forming step is performed after the curtain 20 and the support member 36 are fixed to the side window portion, the loop forming step is performed because a wall around the side window portion becomes an obstacle. As a result, the work space is reduced, so that workability is deteriorated, and there is a high possibility that the loop portion 75 is formed while the string-like member 39 is twisted or entangled with the support member 36. However, according to the present invention, a sufficient working space is ensured by performing the loop forming process for engaging the loop portion 75 with the support member 36 at a place different from the vehicle assembly line 250 that performs the fixing process. Thus, twisting and entanglement of the string-like member 39 when the loop is formed can be more reliably prevented. Accordingly, it is possible to reliably prevent the deployment of the curtain 20 from being hindered by the string-like member 39 being entangled with the support member 36 when the curtain is deployed.

  Further, the stitching operation required in the loop forming step can be performed at a place different from the vehicle assembly line 250, and therefore, it is not necessary to perform the stitching operation in a narrow space in the vehicle interior. The member 39 can be securely stitched and joined to the curtain 20 or a predetermined stitching position of the string-like member 39 itself. Therefore, it is possible to prevent the string-like member 39 from being detached from the curtain 20 when the curtain is deployed or when the deployment is completed due to the stitching failure of the string-like member 39, so that the curtain 20 can be reliably deployed and deployed in the vehicle interior. Tension can be more reliably applied to the curtain 20 after completion.

  Moreover, in the said Embodiment 1, the said support member 36 is comprised by the annular member previously. This prevents the string-like member 39 from being broken due to the string-like member 39 being sandwiched or caught between the support member 36 and the inner panel 32b to which the support member 36 is attached when the curtain deployment is completed. it can. Therefore, it is possible to reliably apply tension to the curtain 20 in the unfolded state via the string-like member 39. Further, when the support member 36 is assembled to the inner panel 32b, the string-like member 39 is not sandwiched between the support member 36 and the inner panel 32b. Accordingly, since the operation of starting the deployment of the curtain 20 can be performed smoothly, the deployability of the curtain 20 can be further improved. Therefore, the curtain 20 can be reliably deployed in the passenger compartment when the vehicle collides or rolls over. Further, it is possible to sufficiently apply tension to the curtain 20 that has been deployed, and as a result, it is possible to prevent the curtain 20 from being easily moved by being pushed by the passenger 9 or an object in the vehicle interior. Therefore, it is possible to prevent the occupant 9 in the passenger compartment from being thrown out of the windows 2 to 4 and to further improve the occupant protection performance of the curtain airbag device.

  Further, in the first embodiment, the loop forming step is performed such that one end of the string-like member 39 is expanded on the second side side of the curtain 20 before the curtain 20 is folded and accommodated. After the stitching, the curtain 20 is folded into a predetermined state, and then the other end of the string-like member 39 is inserted into the opening of the support member 36 and the curtain 20. It is set as the process of sewing and joining to the edge part of the front side of a deployment direction. As a result, a sewing operation of sewing one end of the string-like member 39 to the curtain 20 and then sewing the other end of the string-like member 39 can be easily performed. That is, when the curtain 20 is folded, it is difficult to specify a stitched portion for stitching the string-like member 39. However, according to the present invention, the stitched portion after the curtain 20 is folded is replaced by the curtain 20. Even after the curtain 20 is folded, by searching for the end edge on the front side in the deployment direction of the curtain 20, the stitched portion after the curtain fold is placed in the middle of the curtain deployment direction. It can be easily identified as compared with the case where it is a part. Further, the sewing operation for sewing the other end of the string-like member 39 to the curtain 20 can be performed in the state in which the curtain 20 is folded as described above, and therefore the work space required for the sewing operation can be reduced. .

(Embodiment 2)
FIG. 11 shows a second embodiment of the present invention, in which the configurations of the support member 36 and the loop portion 75 are different from those of the first embodiment. In addition, the same code | symbol is attached | subjected about the component substantially the same as FIG. 4, and the detailed description is abbreviate | omitted suitably. That is, in the present embodiment, the support member 36 is formed of an annular member having a substantially rectangular cross section that is partially open in the circumferential direction, and both ends in the vertical direction are fixedly attached to the inner panel 32 b by the bolts 53.

  The support member 36 is formed in an annular shape that is partially open in the circumferential direction. More specifically, the support member 36 includes a flange portion 78 having mounting holes (not shown) for attaching the support member 36 to the inner panel 32 b and constituting both ends of the support member 36, and the window 4. An extending portion 37c extending in the vertical direction along the rear end edge, and a lower support portion 37a and an upper support portion 37b extending from the lower end portion and the upper end portion of the extension portion 37c toward the flange portion 78, respectively. ing. The extended portion 37c, the lower support portion 37a, and the upper support portion 37b constitute an intermediate portion 37 of the support member 36.

  Here, the area L1 of the flange portion 78 constituting both ends of the support member 36 is formed to be larger than the cross-sectional area L2 of the intermediate portion 37 excluding the both ends. Specifically, if the width of the support member 36 is W1, the thickness is t, and the length of the flange portion 78 in the vertical direction is W2, L1 = W1 × t and L2 = W1 × W2 (FIG. 11 and FIG. 12).

  In addition, the string-like member 39 has one end stitched and joined to the front end in the unfolding direction of the side portion on the second side portion side of the curtain 20, while the other end is connected to the string-like member 39. The string-like member 39 itself is stitched and joined to the predetermined portion of the string-like member 39 so as to be wound around the extending portion 37c. Thus, the loop member 75 is formed by the string-like member 39 itself. Here, the predetermined portion is such that the area on the inner side in the radial direction of the loop portion 75 formed by the string-like member 39 itself is smaller than the area L1 of the flange portion 78 constituting both ends of the support member 36, and the support member 36. The part which becomes larger than the cross-sectional area L2 of the intermediate part 37.

  When the curtain is unfolded, one end of the string-like member 39 sewn to the end of the curtain 20 in the unfolding direction is pulled toward the front (downside) in the unfolding direction, and as a result, the loop formed by the string-like member 39 The part 75 moves downward along the extended part 37c. When the loop portion 75 eventually reaches the lower end of the extending portion 37c, the loop portion 75 is engaged with the lower support portion 37a of the support member 36 and the downward movement is restricted.

  Thus, a part of the string-like member 39 forming the loop portion 75 constitutes the engaging portion 44 that engages with the lower support portion 37a of the support member 36, and the lower support portion 37a of the support member 36. Constitutes the support.

  Thus, a straight line connecting the engaging portion 44 and the connecting portion 77 (or the connecting portion of the engaging portion 44 and the upper front end support tether 38 in the curtain 20) becomes the tension line 40 of the curtain 20, and on the tension line 40, Even if an external force is applied to the curtain 20, the curtain 20 will not be beaten.

  Further, when the curtain airbag device is assembled to the side window portion, the inflator 21, the curtain 20, the front end support tether 38, the crossing tether are preliminarily disposed at a place different from the vehicle assembly line 250, as in the first embodiment. 22, the support member 36, and the string-like member 39 are unitized as a curtain airbag unit 70. Thereafter, the curtain airbag unit 70 is attached to the side window portion of the vehicle on the vehicle assembly line 250, whereby the assembly of the curtain airbag device to the side window portion is completed.

  As described above, in the second embodiment, the support member 36 is configured such that the area L1 of the flange portion 78 constituting both ends of the support member 36 is larger than the cross-sectional area L2 of the intermediate portion 37 excluding the both ends. Is formed. Accordingly, in the loop forming step, as described above, the area of the loop portion 75 in the radial direction is smaller than the area L1 of the flange portion 78 and larger than the cross-sectional area L2 of the intermediate portion 37. By forming so, the support member 36 can be reliably held by the loop portion 75. Further, it is possible to reliably prevent the string-like member 39 constituting the loop portion 75 from being sandwiched between the flange portion 78 and the inner panel 32b in the state where the curtain 20 has been deployed. Therefore, it is possible to reliably apply tension to the curtain 20 that has been deployed, and as a result, it is possible to prevent the curtain 20 from being easily moved by being pushed by an occupant 9 or an object in the vehicle interior.

(Other embodiments)
The configuration of the present invention is not limited to the above embodiments, but includes various other configurations. In other words, in each of the above embodiments, the curtain airbag device is provided in the side window portion of the vehicle, but is not limited to this, and for example, the curtain airbag device is provided in the back window portion formed in the back door of the vehicle. It may be. Moreover, you may provide in the window part of not only a vehicle but a vehicle or a building.

  Further, in each of the embodiments described above, the side window portion includes the upper side portion, the lower side portion, the first side portion (the vehicle front side portion), and the second side portion (the vehicle rear side). The shape of the side window portion is not limited to this, and the shape of the side window portion may be substantially triangular or substantially rectangular, Alternatively, other polygonal shapes may be used, and each side portion around the window portion is not limited to a linear shape but may be an arc shape.

  Further, in the first embodiment, the circular through hole 36a is formed at a substantially central portion in the vertical direction of the support member 36. However, the present invention is not limited to this, and the through hole 36a is, for example, as shown in FIG. In addition, a long hole extending in the vertical direction may be used.

  In the second embodiment, the support member 36 is formed of an annular member that is partially open in the circumferential direction. However, the present invention is not limited to this. For example, the support member 36 is formed in a U shape as shown in FIG. You may do it. Further, for example, as shown in FIG. 13, the support member 36 may be formed of an annular member that is closed in the circumferential direction.

  The present invention is useful for a curtain airbag device having a curtain covering a wind part of a vehicle or a building, and an assembling method for assembling the curtain airbag device to the window part. Useful for a curtain airbag device having a string-like member that engages with a support member disposed in the vicinity of the window portion to apply tension to the curtain, and a method for assembling the curtain airbag device to the window portion. It is.

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. It is the schematic which shows the state which sewed and joined one end of the string-like member to the curtain in the unfolding state. It is the schematic which shows the state by which the inflator, the tether, and the string-like member inserted in the opening part of the support member were combined with the curtain, and were unitized as a curtain airbag unit. It is the schematic which shows the curtain airbag unit in the state by which the both ends of the curtain were turned back and it was fixed with the string-like member with the tape. It is the schematic which shows the structure of the vehicle assembly line in which the installation operation | work to the vehicle of a curtain airbag unit is performed. It is the perspective view seen from the vehicle interior side of the vehicle which shows the structure of the support member of Embodiment 2. FIG. 7 is a diagram corresponding to FIG. 6 of the second embodiment. It is the perspective view seen from the vehicle interior side of the vehicle which shows the structure of the supporting member of other embodiment. It is the perspective view seen from the vehicle interior side of the vehicle which shows the structure of the supporting member of other embodiment.

Explanation of symbols

2-4 window (window part)
14 Fourth pillar (second side)
20 Curtain 21 Inflator (Gas supply device)
32 Roof side rail (first side)
36 Support member 36a Through hole (opening, support) of support member
37 Intermediate part of support member 37a Lower support part (support part)
39 String-like member 44 Engagement part (engagement part)
75 Loop part 78 Flange part (both ends)
250 Vehicle assembly line

Claims (6)

An assembly method for assembling a curtain airbag device provided in a window part having one or more windows to the window part,
The curtain airbag device is
Expanded so as to cover at least a part of the window portion by expansion of the inflatable portion by injecting the gas and having an inflatable portion into which gas is injected and being folded and accommodated in at least a first side portion around the window portion. Curtains to do,
A gas supply device for supplying the gas to the expansion portion of the curtain;
A support member having a support provided on the second side following the first side;
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 engaging portion that moves from the first side portion toward the support portion and engages with the support portion as the leading end portion of the curtain moves in the deployment direction of the curtain,
The support member is composed of an annular member having an opening on the radially inner side,
The engagement portion is formed by a string-like member coupled to a side portion on the second side of the curtain, or a coupling portion between the string-like member and the curtain,
The string-like member is inserted into the opening of the support member, and one end of the string-like member is coupled to a predetermined portion on the second side of the curtain, and is further inserted into the opening and has one end The other end of the string-like member connected to the side of the second side of the curtain is connected to a predetermined part of the side of the second side of the curtain or a predetermined part of the string-like member, The string-like member itself or the string-like member and the side part on the second side of the curtain form a loop-like loop part including the engagement part, and the support member is held by the loop part. Loop formation process;
A fixing method for fixing the curtain to the first side portion and fixing the support member to the second side portion after the loop forming step. An assembly method for assembling a curtain airbag device provided in a window part having one or more windows to the window part,
The curtain airbag device is
Expanded so as to cover at least a part of the window portion by expansion of the inflatable portion by injecting the gas and having an inflatable portion into which gas is injected and being folded and accommodated in at least a first side portion around the window portion. Curtains to do,
A gas supply device for supplying the gas to the expansion portion of the curtain;
A support member having a support provided on the second side following the first side;
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 engaging portion that moves from the first side portion toward the support portion and engages with the support portion as the leading end portion of the curtain moves in the deployment direction of the curtain,
The support member is formed in an annular or U-shape that is partially open in the circumferential direction, and is formed so that the cross-sectional area of both end portions is larger than the cross-sectional area of the intermediate portion excluding the both end portions. ,
The engagement portion is formed by a string-like member coupled to a side portion on the second side of the curtain, or a coupling portion between the string-like member and the curtain,
One end of the string-like member is coupled to a predetermined portion on the side of the curtain on the second side, and the string-like member is wound around the intermediate portion of the support member. The end is coupled to a predetermined portion of the string-like member itself, and the string-like member itself forms a loop-like loop portion that includes the engagement portion and that cannot pass through both ends of the support member. A loop forming step of holding the support member by the loop portion;
A fixing method for fixing the curtain to the first side portion and fixing the support member to the second side portion after the loop forming step. In the assembly method of the curtain airbag device according to claim 1,
In the loop forming step, after one end of the string-like member is stitched and joined to a predetermined portion on the second side portion of the curtain, the other end of the string-like member is connected to the opening of the support member. A method for assembling a curtain airbag device, characterized in that the curtain airbag device is a step of being inserted into a predetermined portion of a side portion of the curtain on the second side after the insertion. In the assembly method of the curtain airbag device according to claim 3,
In the loop forming step, before the curtain is folded, one end of the string-like member is sewn and joined to an intermediate portion in the unfolding direction on the second side of the curtain. Later, after folding the curtain into a predetermined state, the other end of the string-like member is inserted into the opening of the support member, and the front end in the unfolding direction at the second side of the curtain A method of assembling a curtain airbag device, characterized in that it is a step of stitching and joining to a curtain airbag device. In the assembly method of the curtain airbag device according to any one of claims 1 to 4,
The curtain airbag device is provided in a wind part of a vehicle,
While the loop forming step is a step performed at a predetermined place other than the vehicle assembly line for assembling predetermined components to the vehicle while transporting the vehicle by a conveyor,
The method of assembling a curtain airbag device, wherein the fixing step is a step performed on the vehicle assembly line. A curtain airbag device provided in a window portion having one or more windows,
Expanded so as to cover at least a part of the window portion by expansion of the inflatable portion by injecting the gas and having an inflatable portion into which gas is injected and being folded and accommodated in at least a first side portion around the window portion. Curtains to do,
A gas supply device for supplying the gas to the expansion portion of the curtain;
A support member having a support provided on the second side following the first side;
The curtain is provided on a side portion of the curtain on the second side portion, and is positioned closer to the first side portion than the support portion in the accommodated state of the curtain. An engagement part that moves from the first side to the support part and engages with the support part as the curtain moves in the unfolding direction;
The support member is composed of an annular member having an opening on the radially inner side,
The engagement portion is formed by a string-like member coupled to a predetermined portion of the second side portion side of the curtain or a coupling portion between the string-like member and the curtain,
The string-like member is inserted into the opening of the support member and has one end coupled to a predetermined portion on the second side of the curtain and the other end on the second side of the curtain. A curtain airbag device characterized in that the curtain airbag device is coupled to a predetermined portion of the side portion of the cord or a predetermined portion of the string-like member itself.

Images