JP2010069968A - Interior structure of vehicle equipped with curtain airbag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an interior structure of a vehicle having a curtain airbag in which a curtain member is accommodated in a roof trim with its fore end being folded, one end of a connection member is connected to a predetermined part of the curtain member while the length of the connection member is not increased unnecessarily, and the curtain member can be adequately deployed and inflated. <P>SOLUTION: In a curtain member 11, as shown in a detailed figure, an upper part 11Db thereof is folded in a bellows shape, and a lower part 11Dc thereof is folded in a roll shape. More specifically, an area H from the upper end 11Da of the curtain member 11 to the position Q at which a front end 15B of a second tether member 15 is folded in a "bellows shape" in the vertical direction, and an area L from the position Q to a lower end 11Dd of the curtain member is folded in a "roll shape". <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an interior structure of a vehicle provided with a curtain airbag, and more particularly to an interior structure of a vehicle provided with a curtain airbag installed in a roof trim in a stored state.

  2. Description of the Related Art Conventionally, there has been known a curtain airbag device including an airbag (hereinafter referred to as a curtain member) that is deployed in a curtain shape downward from a ceiling portion in a vehicle interior at the time of a side collision, rollover, or rear collision of a vehicle. It has been. In this curtain airbag device, the impact at the time of collision is reduced, and at the time of rollover, the curtain member covers the side window and the back window to protect the occupant.

For example, Patent Literature 1 below discloses a curtain airbag device in which a curtain member in a housed state is installed in a roof trim of a roof side rail portion.
In this curtain airbag device, the amount of storage of the end of the curtain member on the pillar trim side is set to be smaller than the amount of pull-in movement during deployment, thereby reducing the swelling of the roof trim toward the vehicle interior during storage. However, the deployment performance when the curtain member is deployed is reliably maintained.
JP 2007-15536 A

  By the way, in the curtain airbag device stored in the roof trim, it can be considered that the side end portion of the curtain member is folded and stored at the time of storage.

  In this way, by folding and storing the side edge of the curtain member, when the curtain member is deployed, the curtain member can be deployed in the vehicle interior by simply deforming the roof trim that covers the curtain member. The side pillar of the curtain member folded and stored can also cover the vehicle body pillar located on the side of the vehicle body opening.

  For this reason, at the time of expansion | deployment of a curtain member, the expansion | deployment range of a curtain member can be ensured widely, and collision safety can be improved, making small opening of the discharge part of the interior member of a curtain member.

  However, when the curtain member is housed by folding the side end portion in this way, the curtain member and the vehicle body pillar are not connected, so that there is a problem that a tension line cannot be generated in the curtain member during expansion and expansion. In addition, since gas does not easily flow into the bent portion, there may be a problem that the bent portion is difficult to move into the vehicle interior.

  Therefore, by providing a string-like connecting member between the curtain member and the vehicle body pillar, or between the bent portion and the non-bent portion of the curtain member, a tension line is generated in the curtain member, or It is conceivable to move the bent part into the passenger compartment without fail.

  However, if one end of the string-like connecting member is connected to a predetermined portion of the curtain member and the curtain member is all folded by roll folding, one end of the connecting member is completely covered by the curtain member. The other end of the curtain member needs to be once taken out from the side end portion of the curtain member and then connected to a predetermined portion.

  In this way, once the connecting member is taken out from the side edge of the curtain member and then connected to a predetermined location, the length of the connecting member becomes unnecessarily long, and during expansion, There is a possibility that a tension line cannot be generated with certainty, or a problem that it becomes difficult to move the bent portion into the passenger compartment.

  Therefore, the present invention provides an interior structure of a vehicle equipped with a curtain airbag, in which a curtain member is housed in a roof trim by bending its tip, and one end of a connecting member is connected to a predetermined portion of the curtain member. However, it is an object of the present invention to provide an interior structure of a vehicle including a curtain airbag capable of appropriately deploying and inflating a curtain member by configuring the length of the connecting member not to be unnecessarily long. To do.

  The interior structure of a vehicle equipped with a curtain airbag according to the present invention includes a roof trim that forms a ceiling portion in a vehicle compartment under a roof panel, and a top and bottom that are formed of synthetic resin and cover a plurality of vehicle body pillars from the vehicle interior side. A pillar trim extending in the direction and a plurality of vehicle body pillars, and an upper edge of the vehicle body opening located near the outer end of the roof trim, and a vehicle body fixed along the vicinity of the upper edge of the vehicle body opening. An inflatable portion that can supply gas in the form of a curtain is formed, and when the gas is supplied to the inflatable portion under a predetermined condition from the housed state, the roof trim is deformed to move into the vehicle interior, and the vehicle body Curtain air bag means having a curtain member deployed so as to cover the opening, and the curtain member has a folding position as a boundary on at least one of the vehicle body pillars in the housed state. The bent portion is set as a portion, and at least a part of the bent portion is installed between the roof trim and the vehicle body in the housed state, and the predetermined portion of the curtain member and the one vehicle body pillar By setting a connecting member for connecting the intermediate portions in the vertical direction, the curtain member is formed by folding at least a region from the upper edge end to a predetermined portion to which the connecting member is connected in a bellows shape.

According to the above configuration, even if one end of the connecting member is connected to the predetermined part of the curtain member by folding the region from the upper edge of the curtain member to the predetermined part to which the connecting member is connected in a bellows shape, The other end of the connecting member can be taken out as it is without going through the tip of the curved portion.
For this reason, even if it connects one end of a connection member to the predetermined part of the bending part of a curtain member, or a non-bending part, it can comprise, without making a connection member unnecessarily long.
The connecting member may have any shape such as a string shape, a thread shape, or a cloth shape.

  The interior structure of a vehicle equipped with a curtain airbag according to the present invention includes a roof trim that forms a ceiling portion in a vehicle compartment under a roof panel, and a top and bottom that are formed of synthetic resin and cover a plurality of vehicle body pillars from the vehicle interior side. A pillar trim extending in the direction and a plurality of vehicle body pillars, and an upper edge of the vehicle body opening located near the outer end of the roof trim, and a vehicle body fixed along the vicinity of the upper edge of the vehicle body opening. An inflatable portion that can supply gas in the form of a curtain is formed, and when the gas is supplied to the inflatable portion under a predetermined condition from the housed state, the roof trim is deformed to move into the vehicle interior, and the vehicle body Curtain air bag means having a curtain member deployed so as to cover the opening, and the curtain member has a folding position as a boundary on at least one of the vehicle body pillars in the housed state. A bent portion is set as the at least one portion of the bent portion is installed between the roof trim and the vehicle body in the housed state, and the first predetermined portion of the bent portion of the curtain member A connecting member that connects the second predetermined portion of the non-bent portion is set, and the curtain member extends from at least the upper edge to a region that includes the first predetermined portion and the second predetermined portion to which the connecting member is connected. Is folded in a bellows shape.

According to the above configuration, the one end of the connecting member is folded into the bellows shape from the upper edge of the curtain member to the region including the first predetermined portion and the second predetermined portion to which the connecting member is connected. Even if connected to the predetermined part, the other end of the connecting member can be taken out as it is without passing through the tip of the bent part.
For this reason, even if it connects the 1st predetermined site | part of the bending part of a curtain member, and the 2nd predetermined site | part of a non-folding part with a connection member, it can comprise, without making a connection member unnecessarily long.

In one embodiment of the present invention, a first predetermined state in which the connecting member is connected from an area from an upper edge end of the curtain member to a predetermined portion to which the connecting member is connected, or from an upper edge end of the curtain member. The region from the region including the portion and the second predetermined portion to the lower end edge of the curtain member is folded in a roll shape.
According to the above configuration, the lower part of the curtain member is folded in a roll shape while the upper part of the curtain member is folded in a bellows shape by folding the region from the connected region of the coupling member of the curtain member to the lower end edge in a roll shape. It will be.
For this reason, at the time of expansion | deployment, the part folded in roll shape can be expand | deployed stably between a passenger | crew and a vehicle body opening part. In particular, in a later stage of deployment, the folded portion expands downward while the folded portion spreads toward the vehicle body pillar side, so that the stability in the deployment direction can be improved. In addition, when folding the bent portion, roll folding can also be performed while suppressing resistance, so that the curtain member can be easily assembled.
Therefore, while the deployment stability at the time of expansion and expansion of the curtain member can be improved, the assembly workability of the curtain member can also be improved.

  According to this invention, since the connecting member can be connected without going through the front end of the bent portion of the curtain member, one end of the connecting member is attached to a predetermined portion such as a bent portion or a non-folded portion of the curtain member. Even if it connects, it can comprise, without making a connection member unnecessarily long.

  Therefore, in the interior structure of the vehicle equipped with the curtain airbag, the curtain member is folded and stored in the roof trim, and one end of the connecting member is connected to a predetermined portion of the curtain member, The length of the connecting member can be configured not to become unnecessarily long, and the curtain member can be appropriately expanded and expanded.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic side view of the interior structure of the first embodiment employing the present invention, FIG. 2 is a side view of the interior of the vehicle interior with the trims on the side of the third row seats removed, and FIG. FIG. 4 is a cross-sectional view taken along line A-A, and FIG. 4 is a cross-sectional view taken along line B-B in FIG.

  As shown in FIG. 1, the vehicle V employing the first embodiment has three rows of seats so that three passengers P (only the head is indicated by a one-dot chain line) can be seated in the vehicle front-rear direction. It is a wagon type vehicle equipped with (not shown). A triangular window opening 1, a front door opening 2, a rear door opening 3, and a quarter window opening 4 are formed on the vehicle body side wall of the vehicle V from the front side.

  In addition, a first pillar 5 extending obliquely upward on the rear side of the vehicle is provided in front of the triangular window opening 1, and a second pillar 6 extending similarly obliquely upward is provided behind the triangular angle opening 1. .

  A third pillar 7 extending in the vertical direction is provided behind the front door opening 2, and a fourth pillar 8 extending in the vertical direction is provided behind the rear door opening 3. Further, a fifth pillar 9 extending in the vertical direction is provided behind the quarter window opening 4.

  A roof side rail portion 10 extending in the vehicle front-rear direction is provided above the front door opening 2, the rear door opening 3, and the quarter window opening 4.

The roof side rail portion 10 is provided with a curtain member 11 in a housed state extending in the vehicle front-rear direction along the upper edge portions of the openings 2, 3, 4. The curtain member 11 is fastened and fixed to the roof side rail portion 10 that is a vehicle body side member via a plurality of mounting flanges 12 and is firmly fixed to the vehicle body.
As is well known, the curtain member 11 is formed of a cloth bag-like airbag body, and includes an inflatable portion and a non-inflatable portion. It is configured to expand and expand in a curtain shape indoors (in FIG. 1, the expanded state is indicated by a broken line).

  Further, as shown in FIG. 1, the curtain member 11 is unfolded so as to cover the upper part of the front door opening 2, the upper part of the rear door opening 3, and the quarter window opening 4 when deployed, and acts on the head P of the occupant. The impact such as the side impact load is reduced.

  The curtain member 11 is folded in a predetermined folding structure in the housed state, and as described later, the upper part is folded by “bellows fold”, and the lower part is folded by “roll folding”.

  An inflator 13 that generates gas at the time of a side collision or the like and supplies the gas to the expansion portion of the curtain member 11 is provided at a position above the center of the curtain member 11. The inflator 13 is constituted by a long cylindrical member, and is arranged so as to extend in the vehicle front-rear direction, like the curtain member 11. And at the time of a side collision etc., it is comprised so that gas may be generated by receiving an operation signal.

  The gas generated in the inflator 13 is configured to be introduced into the expansion portion of the curtain member 11 from the gas introduction port Y provided in the upper center of the curtain member 11 through the supply port 13a of the inflator 13. ing.

  In addition, a string-like first tether member 14 is provided on the second pillar side (vehicle front side end) 11 A of the curtain member 11, and an intermediate between the side end (11 A) of the curtain member 11 and the second pillar 6. The part is connected and fixed. By providing the first tether member 14, tension (tension) can be generated on the second pillar side 11 </ b> A of the curtain member 11 when the curtain member 11 is deployed.

  On the other hand, a string-like second tether member 15 is also provided on the fifth pillar side (vehicle rear side end) 11B of the curtain member 11, and the curtain member 11 and the fifth pillar 9 are connected and fixed. By providing the second tether member 15, tension can be generated on the fifth pillar side 11 </ b> B of the curtain member 11 when the curtain member 11 is deployed.

  However, the second tether member 15 is not fixed to the outer end portion 11 </ b> C of the curtain member 11, but rather is fixed to the center side. This is because the bent portion 16 is provided on the fifth pillar side 11B of the curtain member 11 in the housed state.

  Therefore, the structure of the bent portion 16 and the second tether member 15 will be described in detail with reference to FIGS. 2, 3, and 4.

  First, as shown in FIG. 2, the bent portion 16 is folded back to the vehicle front side (anti-fifth pillar side) with the side end portion on the fifth pillar side 11B of the curtain member 11 in the housed state as a boundary. It is configured by bending. And this bending part 16 is bent so that it may be located in the vehicle inner side of main part 11D which is a non-bending part.

  The bent portion 16 is held by a holding bracket 17 that is fastened and fixed to the roof side rail portion 10. Specifically, as shown in FIG. 4, a holding bracket 17 having a handle-shaped cross section having a receiving portion 17 a opened downward is held side by side with the main body portion 11 </ b> D.

  The roof side rail portion 10 that fixes and holds the main body portion 11D and the bent portion 16 of the curtain member 11 includes a closed cross section W that extends in the vehicle front-rear direction by the outer side panel 21 and the inner side panel 22. In this interior, a reinforcement 23 is provided to increase rigidity.

  In addition, the outer end flange 24a of the roof panel 24 is joined to the inner end flange 10a of the roof side rail portion 10, and the outer end flange 10b of the roof side rail portion 10 is further connected via a seal member 25. The quarter window glass 26 is supported. A roof cross rain 27 extending in the vehicle width direction is installed below the roof panel 24.

  The curtain member 11 and the holding bracket 17 are covered with a roof trim R that forms a passenger compartment ceiling below the roof side rail portion 10. The roof trim R is formed of a soft foamed urethane member or a soft resin member, and is configured to be easily deformed when subjected to an external load.

  For this reason, when the curtain member 11 is expanded and inflated, the side portion Ra of the roof trim R is deformed downward (Ra ′) and is deformed in the open state as shown in the figure. Therefore, there is no possibility of hindering the deployment operation of the curtain member 11, and the safety performance of the curtain airbag device can be enhanced.

  Further, when the curtain member 11 expands and expands, as indicated by a two-dot chain line, only the main body portion 11D moves downward (to the side of the quarter window opening 4) at the initial stage of deployment, and the bent portion 16 moves at the later stage of deployment. It will expand and expand. For this reason, even if the deformation amount (opening amount) of the roof trim R is small, the curtain member 11 can be reliably deployed toward the vehicle interior side.

  Further, the curtain member 11 has only the main body portion 11D fixed to the roof side rail portion 10, and when the curtain member 11 is expanded and inflated, only the upper end portion 11Da of the main body portion 11D is fixedly supported to the roof third rail portion 10. It is configured as follows.

  Further, as shown in the detailed view, the curtain member 11 has an upper portion 11Db folded in a bellows shape and a lower portion 11Dc folded in a roll shape. Specifically, a region H from the upper end portion 11Da of the curtain member 11 to the position Q where the front end 15B of the second tether member 15 is fixed is folded in a “bellows-like shape” in the vertical direction, and the curtain from the position Q The region L up to the lower end 11Dd of the member is folded in a “roll shape”.

  Thus, by changing the folding structure of the curtain member 11 with the position Q where the front end 15B of the second tether member 15 is fixed as a boundary, the length of the second tether member 15 is made as short as possible as will be described later. However, the deployment stability during deployment and expansion of the curtain member can also be improved.

  Further, as shown in FIG. 3, the curtain member 11 is configured such that the body portion 11 </ b> D is slightly bent outward in the vehicle width direction at a portion where the bent portion 16 is set in a plan view. is doing.

  In this way, by arranging the main body portion 11D, even if the bent portion 16 is folded back and disposed on the side of the main body portion 11D, the amount of protrusion toward the vehicle interior side can be reduced. The passenger seated on the eye seat S3 is not given a feeling of pressure.

  Further, the main body portion 11D is set so that the portion where the bent portion 16 is not set is positioned on the inner side in the vehicle width direction. For this reason, the inner panel 8a of the fourth pillar 8 can be arranged on the outer side of the main body 11D. Reference numeral 28 denotes a C pillar trim that covers the interior of the fourth pillar 8 in the vehicle interior.

  On the other hand, as shown in FIG. 2, the second tether member 15 is composed of a long strip-like cloth member. Then, the rear end 15A is fixed to a predetermined position below the middle portion of the fifth pillar 9 with the fixing pin 30, and the front end 15B is fixed to the main body portion 11D of the curtain member 11 with the stitching portion 31. Yes.

  Specifically, the front end 15B is firmly sewn and fixed to the outside of the main body 11D of the curtain member 11 via the stitching portion 31 in the vicinity of the boundary 11E of the bending position of the main body 11D. The rear end 15 </ b> A is firmly connected to the front side wall 9 a of the fifth pillar 9 via the fixing pin 30.

  The second tether member 15 connects the fifth pillar 9 and the curtain member 11 by inserting a gap S between the fifth pillar 9 and the D pillar trim 29 covering the fifth pillar.

  The D pillar trim 29 is formed of a hard synthetic resin. As described above, the D pillar trim 29 is formed of a hard synthetic resin to prevent the D pillar trim 29 from being easily deformed even when pressed by a load or the like.

  However, the D-pillar trim 29 is a clip member that is easily unlocked and fixed so that the second tether member 15 can move freely even when the D-pillar trim 29 is not deformed when the curtain member 11 is deployed. 32 is engaged and fixed to the fifth pillar 9.

  In the fifth pillar 9, the outer panel 33 and the inner panel 34 constitute a closed section X that extends in the vertical direction, and the reinforcement 35 is provided inside to increase the rigidity of the closed section X. . Among these, the second tether member 15 and the D pillar trim 29 are fixed to the inner panel 34.

  In addition, R shown with a dashed-dotted line is a roof trim, and the curtain member 11 of the accommodation state is covered by this roof trim R.

  However, the bent portion 16 is not only completely bent forward of the vehicle as in this embodiment, but also in the vicinity of the side edge of the roof trim R in a plan view, for example, as indicated by a two-dot chain line 116. It may be bent substantially inwardly in the vehicle width direction. For example, the bending angle α may be set to 50 ° to 180 °.

  Next, the operation behavior of the curtain airbag device in this embodiment will be described with reference to FIGS. FIG. 5 is a side view showing a stored state of the curtain member, and FIG. 6 is a side view showing a developed state of the curtain member. In any of the drawings, the roof trim R is indicated by a virtual one-dot chain line so that the state of the curtain member 11 can be easily understood.

  First, as shown in FIG. 5, the curtain member 11 is installed so as to extend in the vehicle front-rear direction along the upper edges of the rear door opening 3 and the quarter window opening 4 in a normal state. In this state, the curtain member 11 is covered with the roof trim R.

  The second tether member 15 is installed such that the rear end 15A is fixed at a predetermined position below the fifth pillar 9 and the rear half 15C is located between the fifth pillar 9 and the D pillar trim 29. Yes. Further, the front half portion 15E of the second tether member 15 is also installed so as to be positioned between the fifth pillar 9 and the roof trim R.

  Thus, the curtain member 11 and the second tether member 15 are completely covered with the roof trim R and the D pillar trim 29 at the normal time, and are not exposed to the vehicle interior.

  As shown in FIG. 6, when a side collision or the like occurs and a side collision load is applied to the vehicle, an operation signal is transmitted to the inflator 13 by a collision sensor and a control unit (not shown), and gas is generated in the inflator 13. appear. Then, by supplying this gas to the curtain member 11 through the supply port 13a (see FIG. 1) and the gas introduction port Y (see FIG. 1), the curtain member 11 expands and expands.

  At this time, the gas flows toward the vehicle rear side in the inflating portion (11) of the curtain member 11 as indicated by an arrow. For this reason, the curtain member 11 expands from the vicinity of the inflator 13 toward the vehicle rear side and expands downward so as to cover the rear door opening 3 and the quarter window opening 4.

  However, since the curtain member 11 is provided with a stitching line portion 40 that is sewn in a substantially “reverse shape” in a side view at a substantially central position in the vertical direction, a portion corresponding to a bent portion of the curtain member 11. The gas does not flow into 16 ′ (the rear side portion of the two-dot chain line T) at once, but the gas flows through the upper and lower portions of the stitching line portion 40.

  Further, when the curtain member 11 is expanded and inflated, the second tether member 15 is also pulled by the curtain member 11 and exposed to the vehicle interior. At this time, since the second tether member 15 has the front end 15B secured to the main body portion 11D of the curtain member 11, the deployment position of the curtain member 11 is restrained and tension is generated.

  Thus, by generating tension between the curtain member 11 and the fifth pillar 9 by the second tether member 15, a “tension line” TL extending in the vehicle front-rear direction can be formed on the curtain member 11.

  The tension line TL has a position where the second tether member 15 is fixed to the fifth pillar 9 as a rear end TL1, and a position where the first tether member 14 is fixed to the second pillar 6 as a front end TL2 (see FIG. 1). ) And the curtain member.

  The tension line TL is set at a position below the head center of gravity PO of the occupant P seated on the third row seat. For this reason, when the vehicle rolls over, the occupant P can be protected.

Moreover, since the 2nd tether member 15 exposed from D pillar trim 29 can also be covered by the part 16 'equivalent to a bending part because the bending part 16 expand | deploys to the D pillar trim 29 side, it is the 2nd tether member. It is possible to prevent 15 from directly contacting the passenger P.
Further, as described above, the curtain member 11 has the upper region H folded in a bellows shape and the lower region L folded in a roll shape across the position Q where the front end 15B of the second tether member 15 is stitched. It is.

  This is because the second tether member 15 is first configured to be as short as possible. The reason for this will be described using the schematic plan view of the curtain member in FIG.

  FIG. 7A is a view showing a routing route of the second tether member when the curtain member is folded into a roll shape, and FIG. 7B is a second tether member when the curtain member is folded into a bellows shape. It is the figure which showed the routing route.

  As shown in (a), when the curtain member 11 ′ is roll-folded, the stitched portion 31 of the front end 15B of the second tether member 15 ′ is wound inside the curtain member 11 ′. In order to expose the second tether member 15 ′ to the outside of the curtain member 11 ′, the second tether member 15 ′ is inevitably reversed once along the bent portion 16, and After routing the inside, it is necessary to expose from the front end portion 16a of the bent portion 16 to the outside.

  On the other hand, as shown in (b), when the curtain member 11 is accordion-folded, the stitched portion 31 at the front end 15B of the second tether member 15 is always exposed to the outside of the curtain member 11, so that The second tether member 15 can be extended to the vehicle rear side.

  Thus, the routing path of the second tether member 15 changes depending on the folding structure of the curtain member 11, and the bellows fold needs to pass through the front end portion 16a of the bent portion 16 like a roll fold. Therefore, the second tether member 15 can be configured as short as possible.

  Therefore, in this embodiment, the length of the second tether member 15 is shortened by folding the upper portion 11Db (see FIG. 4) of the curtain member 11 into a bellows shape.

  The reason why the lower portion 11Dc of the curtain member 11 is folded in a roll shape is to stabilize the deployment direction of the curtain member 11. This reason will also be described using a schematic cross-sectional view of the curtain member in FIG.

  8A is a longitudinal sectional view of the curtain member in the housed state, FIG. 8B is a longitudinal sectional view of the curtain member in the middle of deployment, and FIG. 8C is a longitudinal sectional view of the curtain member in the deployed and expanded state. It is.

  As shown to (a), as for the curtain member 11, upper part 11Db is folded by the bellows shape in the accommodation state, and lower part 11Dc is folded by roll shape. In particular, the portion (11Dc) folded in a roll shape is folded so as to be caught on the vehicle width inward side (counterclockwise direction in the drawing) opposite to the quarter window glass 26. Reference numeral 15 denotes a second tether member.

As shown in (b), when the curtain member 11 is expanded by supplying gas, the portion (11Db) folded in a bellows shape expands and expands while being displaced (moved) downward. At this time, the portion (11Dc) folded in a roll shape also expands. However, since the portion (11Dc) is wound inside the vehicle width, the folded portion is outside the vehicle width due to the reaction force during expansion. It will be displaced to the side (indicated by an arrow).
However, since the quarter window glass 26 exists on the outer side of the vehicle width, the curtain member 11 comes into contact with the quarter window glass 26 and the displacement of the curtain member 11 to the outer side of the vehicle body is suppressed. As it is, along the quarter window glass 26, it expands and expands downward.

  For this reason, as shown in (c), when the curtain member 11 is fully expanded and inflated, the curtain member 11 is reliably positioned between the head P of the occupant and the quarter window glass 26 and is inflated and expanded. Will do.

  As described above, since the curtain member 11 is roll-folded, the deployment direction of the curtain member 11 can be stabilized. Therefore, in this embodiment, in particular, the lower portion 11Dc of the curtain member 11 that defines the deployment direction is a roll. It is folded into a shape.

  Therefore, in this embodiment, the expansion | deployment direction of the curtain member 11 can be stabilized by folding lower part 11Dc of the curtain member 11 in roll shape.

Next, the effect of this embodiment comprised in this way is demonstrated.
In this embodiment, the curtain airbag device having the curtain member 11 that expands and inflates toward the vehicle interior side such as the quarter window opening 4 at the time of a side collision or the like is provided, and the curtain member 11 is provided on the fifth pillar 9 side. Sets the bent portion 16 that is folded back in the housed state, sets the second tether member 15 that connects the main body portion 11D of the curtain member 11 and the fifth pillar 9, and further the curtain member 11 is in the housed state. The upper portion 11Db (see FIG. 4) from the upper end portion 11Da to the position Q where the second tether member 15 is connected is set to be folded in a bellows shape.
As a result, even if the front end 15B of the second tether member 15 is connected to the main body portion 11D of the curtain member 11, the second tether member 15 is left as it is without passing through the distal end portion 16a of the bent portion 16. It can be taken out to the pillar 9 side.
For this reason, even if the front end 15B of the second tether member 15 is connected to the main body 11D of the curtain member 11, the second tether member 15 can be configured without making it unnecessarily long.
Therefore, in the interior structure of a vehicle equipped with a curtain airbag, the curtain member 11 is housed in the roof trim R by folding the bent portion 16, and the second tether member is stored in the main body portion 11 </ b> D of the curtain member 11. While the 15 front ends 15B are connected, the second tether member 15 can be configured such that the length of the second tether member 15 does not become unnecessarily long, and the tension line TL can be appropriately formed on the curtain member 11 during expansion and expansion.

In this embodiment, the lower end 11Dc of the curtain member 11 is connected to the lower end 11Dd of the curtain member 11 from the position Q where the front end 15B of the second tether member 15 of the main body 11D of the curtain member 11 is connected (see FIG. 4). It is set so that it can be folded into a roll.
Accordingly, the lower portion 11c of the curtain member 11 is folded in a roll shape while the upper portion 11Db of the curtain member 11 is folded in a bellows shape.
For this reason, the part (11Dc) folded in roll shape can be stably developed between the passenger | crew P and the quarter window opening 4 at the time of expansion | deployment expansion | swelling. In particular, in the latter stage of deployment, the portion (11Dc) folded in a roll shape while the bent portion 16 spreads toward the fifth pillar 9 is deployed downward, so that the stability in the deployment direction can be improved.

Further, when the assembling operator bends the bent portion 16 of the curtain member 11, the curtain member 11 can be folded while being rolled, so that the resistance can be reduced. Can also be done easily.
That is, when the curtain member 11 is accordion-folded in the vertical direction, the rigidity increases in the horizontal direction orthogonal to each other, so that it is difficult to bend the curtain member 11 in the horizontal direction, but the lower part 11Dc of the curtain member 11 is Since the increase in rigidity is mitigated by roll folding, it becomes easy to bend the bent portion 16 and the assembling work of the curtain member 11 is facilitated.

  Therefore, the deployment stability at the time of deployment and expansion of the curtain member 11 can be improved, and the assembly workability of the curtain member 11 can also be improved.

Next, a second embodiment of the present invention will be described with reference to FIGS.
9 is a schematic side view of the interior structure of the second embodiment, FIG. 10 is a side view of the vehicle interior with the trims on the side of the third row seats removed, and FIG. 11 is a view taken along line CC in FIG. FIG. 12 is a cross-sectional view taken along the line D-D in FIG. 10, FIG. 13 is a side view showing the retracted state of the curtain member, FIG. 14 is a side view showing the expanded state of the curtain member, and FIG. It is a plane schematic diagram of the curtain member explaining the routing route of the tether member. In addition, about the component similar to 1st embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In this embodiment, a string-shaped development tether member 115 is provided on the fifth pillar side 11 </ b> B of the curtain member 11. By providing the unfolding tether member 115, the bent portion 16 of the curtain member 11 in the housed state can be unfolded more quickly.

  Specifically, as shown in FIG. 9, one end of the deployment tether member 115 is fixed to the outer end portion 11C of the curtain member 11, and the other end of the deployment tether member 115 is connected to the lower lower portion of the curtain member 11 ( 11F), the outer end portion 11C of the curtain member 11 and the lower lower portion 11F are connected by the development tether member 115.

  More specifically, as shown in FIG. 11, one end 115a of the deployment tether member 115 is firmly sutured and fixed to the distal end portion 16a of the bent portion 16 of the curtain member 11 via the first stitching portion 115A. In addition, the other end 115b of the deployment tether member 115 is firmly fixed to the position separated from the boundary 11E of the folding position of the main body portion 11D of the curtain member 11 via the second stitching portion 115B.

  A D pillar trim 129 that covers the interior side of the fifth pillar 9 is disposed behind the curtain member 11. This D pillar trim 129 is also formed of a hard synthetic resin.

  In addition, R shown with a dashed-dotted line is a roof trim, and the curtain member 11 of the accommodation state is covered by this roof trim R.

  As shown in FIG. 12, also in this embodiment, the curtain member 11 folds the upper portion 11Db into a bellows shape and folds the lower portion 11Dc into a roll shape in the housed state. And the one end 115b (1st stitching part 115B) of the expansion | deployment tether member 115 is being fixed to the lower part of the part (11Db) folded in the bellows shape. Although not shown in FIG. 12, the other end 115a (second stitching portion 115A) of the deployment tether member 115 is also fixed to the bellows-like portion (11Db).

  Thus, by fixing both ends 115a and 115b of the development tether member 115 to the bellows-like portion (11Da), the length of the development tether member 115 is longer than necessary as will be described later. Prevents it from becoming long.

Next, the operation behavior of the curtain airbag device in this embodiment will be described with reference to FIGS.
First, as shown in FIG. 13, also in this embodiment, the curtain member 11 is normally installed so as to extend in the vehicle front-rear direction along the upper edge of the rear door opening 3 and the quarter window opening 4 in the housed state. ing. In this state, the curtain member 11 is covered with the roof trim R.

  Further, in the deployment tether member 115, the first stitching portion 115A is fixed to the bent portion 16 side, and the second stitching portion 115B is fixed to the main body portion 11D side. And the intermediate part 115c is located so that it may hang down between the bending part 16 and the main-body part 11D.

  Thus, both the curtain member 11 and the deployment tether member 115 are normally covered with the roof trim R so that they are not exposed to the vehicle interior.

  As shown in FIG. 14, when a side collision or the like occurs and a side collision load is applied to the vehicle, an operation signal is transmitted to the inflator 13 by a collision sensor and a control unit (not shown), and gas is generated in the inflator 13. appear. The curtain member 11 is expanded and expanded by supplying this gas to the expansion portion of the curtain member 11.

  At this time, the gas flows toward the rear side of the vehicle as indicated by an arrow. For this reason, the curtain member 11 expands from the vicinity of the supply port 13a (see FIG. 9) of the inflator 13 toward the rear side of the vehicle and expands downward so as to cover the rear door opening 3 and the quarter window opening 4. Will do.

  However, the downward movement of the portion 16 ′ corresponding to the bent portion 16 is delayed from the movement of the main body portion 11 </ b> D because gas does not flow to the bent portion 16 at a stretch. In particular, the distal end portion 16a of the bent portion 16 is deployed last, so that the movement into the vehicle interior is delayed.

  Therefore, in this embodiment, the development tether member 115 tries to eliminate the delay in movement of the bent portion 16.

  Specifically, since the second stitching portion 115B of the deployment tether member 115 is fixed to the lower expanding portion 11F of the main body portion 11D, gas is supplied to the expanding portion 11F, and the second stitching is performed first. The part 115B moves to the passenger compartment side (downward side). In conjunction with the downward movement, the first stitching portion 115A of the deployment tether member 115 is fixed to the portion 16a ′ corresponding to the distal end portion 16a of the bent portion 16. The portion 16a ′ corresponding to the tip can be moved downward at an early stage.

  That is, by using the deployment tether member 115, the deployment force of the lower lower portion (11F) of the main body portion 11D is transmitted to the distal end portion 16a of the folding portion 16 so that the folding portion 16 can be moved to the vehicle compartment side early. It drags down and eliminates the delay in movement of the bent portion 16.

  Next, the reason why both ends of the deployment tether member 115 are fixed to the bellows-like portion (11Db) of the curtain member 11 will be described using the schematic plan view of the curtain member in FIG.

  FIG. 15 (a) is a view showing the route of the unfolded tether member when the curtain member is folded into a roll shape, and FIG. 15 (b) is the unrolled tether member when the curtain member is folded into a bellows shape. It is the figure which showed the path | route.

  As shown to (a), when curtain member 11 'is made into roll folding, the 2nd stitching part 115B of the other end of deployment tether member 115' is the inside of curtain member 11 'like the first embodiment. In order to fix the first stitching portion 115A at one end of the deployment tether member 115 ′ to the distal end portion 16a of the folding portion 16 of the curtain member 11 ′, the deployment tether member 115 is temporarily attached to the folding portion 16. It is necessary to be reversed so that the inside of the bent portion 16 is routed and then exposed to the outside from the tip portion 16a and fixed to the tip portion 16a.

  On the other hand, as shown in (b), when the curtain member 11 is accordion-folded, the first stitched portion 115A and the second stitched portion 115B of the deployment tether member 115 are always exposed to the outside of the curtain member 11. The unfolded tether member 115 can be routed to the outside of the curtain member 11 as it is, and both ends (115A, 115B) can be fixed to the main body portion 11D and the bent portion 16 of the curtain member 11.

  As described above, in this embodiment as well, the routing route of the deployment tether member 115 changes depending on the folding structure of the curtain member 11, and the bellows fold needs to pass through the distal end portion 16a of the bent portion 16 like a roll fold. Therefore, the deployment tether member 115 can be configured as short as possible.

  Therefore, also in this embodiment, the length of the deployment tether member 115 can be shortened by folding the upper portion 11Db of the curtain member 11 into a bellows shape, and thereby the function of the deployment tether member 115 can be enhanced.

  Also in this embodiment, the lower portion 11Dc of the curtain member 11 is folded in a roll shape, but in this embodiment as well, the deployment direction of the curtain member 11 during deployment and expansion can be stabilized.

Thus, also in this second embodiment, the length of the deployment tether member 115 can be shortened by folding the upper portion 11Db of the curtain member 11 into a bellows shape and folding the lower portion 11Dc of the curtain member 11 into a roll shape, In addition, the deployment direction of the curtain member 11 can be stabilized.
Therefore, the deployment performance of the curtain airbag device can be improved and the safety can be further improved.

As described above, in the correspondence between the configuration of the present invention and the above-described embodiment,
The pillar trim of the present invention corresponds to the D pillar trim 29 and the C pillar trim 28 of the embodiment,
Similarly,
The vehicle body opening corresponds to the quarter window opening 4,
The connecting member corresponds to the second tether member 15 and the deployment tether member 115,
The region from the upper edge end to the predetermined portion where the connecting member is connected, or the region including the first predetermined portion and the second predetermined portion where the connecting member is connected from the upper edge end corresponds to the upper part 11Db,
Up to the lower edge of the curtain member, which corresponds to the lower part 11Dc,
The present invention is not limited to the above-described embodiment, but includes an embodiment applied to an interior structure of a vehicle including any curtain airbag.
In the above embodiment, the side curtain airbag device deployed at the side of the vehicle body has been described. However, a similar structure may be employed in the rear curtain airbag device deployed at the rear of the vehicle body.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic side view of the interior structure of 1st embodiment which employ | adopted this invention. The side view of the vehicle interior which removed the trims of the 3rd row seat side, and was shown. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. FIG. 3 is a sectional view taken along line B-B in FIG. 2. The side view which showed the accommodation state of the curtain member. The side view which showed the expansion | deployment state of the curtain member. It is the plane schematic diagram of a curtain member, (a) is a figure showing the routing route of the second tether member when the curtain member is folded in a roll shape, (b) is the second when the curtain member is folded in a bellows shape The figure which showed the management path | route of a tether member. FIG. 5 is a schematic cross-sectional view of the curtain member during expansion and expansion, in which (a) is a vertical cross-sectional view of the curtain member in a stored state, (b) is a vertical cross-sectional view of the curtain member in the middle of expansion, and (c) is a curtain member in the expanded and expanded state. FIG. The schematic side view of the interior structure of the second embodiment. The side view of the vehicle interior which removed the trims of the 3rd row seat side, and was shown. FIG. 11 is a cross-sectional view taken along line CC in FIG. 10. FIG. 11 is a cross-sectional view taken along line D-D in FIG. 10. The side view which showed the accommodation state of the curtain member. The side view which showed the expansion | deployment state of the curtain member. It is the plane schematic diagram of a curtain member, (a) is the figure which showed the routing route of the expansion | deployment tether member at the time of folding a curtain member in roll shape, (b) is the expansion | deployment tether member at the time of folding a curtain member in bellows shape The figure which showed the routing route.

Explanation of symbols

V ... Vehicle 4 ... Quarter window opening 9 ... Fifth pillar 10 ... Roof side rail part 11 ... Curtain member 11Db ... Upper part 11Dc ... Lower part 15 ... Second tether member 16 ... Bent part 115 ... Deployment tether member

Claims (3)

A roof trim that forms a ceiling in the passenger compartment below the roof panel;
Pillar trim that is formed of synthetic resin and extends in the vertical direction to cover the plurality of vehicle body pillars from the vehicle interior side,
A vehicle body opening formed by the plurality of vehicle body pillars and having an upper edge located near the outer end of the roof trim;
An inflatable portion that is fixed to the vehicle body along the vicinity of the upper edge of the vehicle body opening and is capable of supplying gas in the form of a curtain is formed, and gas is supplied to the inflatable portion under predetermined conditions from the housed state. A curtain airbag means having a curtain member that deforms the roof trim to move into the vehicle interior and expands to cover the vehicle body opening,
The curtain member has a bent portion that is bent at the folding position as a boundary on at least one of the vehicle body pillars in the housed state.
At least a part of the bent portion is installed between the roof trim and the vehicle body in the housed state,
Setting a connecting member that connects a predetermined portion of the curtain member and an intermediate portion in the vertical direction of the one vehicle body pillar;
The curtain member is an interior structure of a vehicle including a curtain airbag in which at least a region from an upper edge end to a predetermined portion where the connecting member is connected is folded in a bellows shape. A roof trim that forms a ceiling in the passenger compartment below the roof panel;
Pillar trim that is formed of synthetic resin and extends in the vertical direction to cover the plurality of vehicle body pillars from the vehicle interior side,
A vehicle body opening formed by the plurality of vehicle body pillars and having an upper edge located near the outer end of the roof trim;
An inflatable portion that is fixed to the vehicle body along the vicinity of the upper edge of the vehicle body opening and is capable of supplying gas in the form of a curtain is formed, and gas is supplied to the inflatable portion under predetermined conditions from the housed state. A curtain airbag means having a curtain member that deforms the roof trim to move into the vehicle interior and expands to cover the vehicle body opening,
The curtain member has a bent portion that is bent at the folding position as a boundary on at least one of the vehicle body pillars in the housed state.
At least a part of the bent portion is installed between the roof trim and the vehicle body in the housed state,
A connecting member that connects the first predetermined portion of the bent portion of the curtain member and the second predetermined portion of the non-bent portion;
The curtain member is an interior structure of a vehicle including a curtain airbag that is folded in a bellows shape from at least an upper edge end to a region including a first predetermined portion and a second predetermined portion to which the connecting member is connected. From a region from the upper edge of the curtain member to a predetermined site where the connecting member is connected, or a first predetermined site and a second predetermined site where the connecting member is connected from the upper edge of the curtain member The interior structure of a vehicle provided with a curtain airbag according to claim 1 or 2, wherein a region from the region to the lower edge of the curtain member is folded in a roll shape.

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