JP2008080858A - Interior trim structure of vehicle equipped with curtain airbag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an interior trim structure of a vehicle having a curtain airbag capable of preventing the hooking to a seat belt anchor even when the curtain airbag is deployed in a slidable contact with a face of an intermediate pillar on the in-cabin side during the deployment and the longitudinal tension is generated in the airbag wherein the interior structure of the vehicle comprises the seat belt anchor provided on the face of the intermediate pillar on the in-cabin side, and the curtain airbag which stores an upper front portion of the intermediate pillar to a lower portion of a rear pillar on the inner side of a side edge of a flexible roof trim and a hard rear pillar trim, and introduces gas forward of the intermediate pillar when predetermined conditions are established, and is deployed so as to cover the interior side surface of a side window part in front of a front edge of at least the rear pillar including the intermediate pillar. <P>SOLUTION: A seatbelt anchor 72 is provided on upper sides of tension lines (TL1, TL2, TL3) formed in a curtain airbag 17 in a predetermined deployed condition in the longitudinal direction of a vehicle. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an interior structure of a vehicle provided with a curtain airbag, and belongs to the field of vehicle safety technology.

  2. Description of the Related Art In vehicles, particularly automobiles, it is common to equip an airbag device for protecting an occupant during a collision or rollover. As this airbag, what is called a curtain airbag that is elongated in the front-rear direction so as to cover the inner surface of the side window portion composed of a plurality of side window glasses and pillars that are spaced in the front-rear direction. is there.

  A seat belt anchor may be provided on the inner surface of the pillar to be covered with such a curtain airbag. For example, Patent Document 1 discloses an intermediate pillar trim that constitutes the inner surface of the intermediate pillar. The seat pillar anchor protrudes from the vehicle interior to the vehicle interior, and the intermediate pillar trim protrudes toward the vehicle interior so that the curtain airbag does not get caught when the seat belt anchor is deployed. What provided the protruding part (deployment direction control part) is disclosed.

  On the other hand, in Patent Document 2, a curtain airbag is accommodated by extending not only the interior of the ceiling but also the interior of the rear pillar, and the front edge portion of the rear pillar trim is expanded to form a space between the side window glass. The curtain air bag is configured to be deployed from the gap generated in the above.

JP 2001-058556 A Japanese Patent Laid-Open No. 2004-196250

  Here, the rear pillar trim is generally formed of a synthetic resin harder than the roof trim that forms the inner surface of the ceiling so as not to be easily damaged by luggage or the like.

  On the other hand, in order to improve the occupant protection performance during rollover, for example, the vehicle front-rear direction connecting the lower part of the rear pillar and the front part lower than the upper end of the rear pillar to the curtain airbag when the deployment is completed It is preferable to generate tension in In addition, gas is introduced at the front side of the intermediate pillar in order to ensure the protection of the front seat occupant who is likely to board in order to quickly fill the curtain airbag that is long in the front-rear direction. It is conceivable to configure.

  However, as described above, the seat belt anchor is provided on the inner side surface of the intermediate pillar, and the curtain airbag is deployed from the gap formed between the rear pillar trim and the side window glass as described in Patent Document 2. In the case of what is to be done, the following problems may occur when the above-described configuration of generating tension in the longitudinal direction of the vehicle is applied. That is, in a vehicle having a general body structure, the gap is positioned on the vehicle outer side in the vehicle width direction than the vehicle inner surface of the intermediate pillar, but gas is introduced on the front side of the intermediate pillar. Then, the curtain airbag begins to expand downward at the part where the gas is introduced first, and descends while sliding on the inner side surface of the intermediate pillar (see FIG. 15). When the tension in the vehicle longitudinal direction is generated in the curtain airbag in such a state, the airbag is pressed against the inner side surface of the intermediate pillar, and as a result, the curtain airbag is seated when deployed. It becomes easy to get caught in the belt anchor.

  As will be described later, there are cases where tension in the vehicle front-rear direction occurs at a predetermined time during deployment due to various other factors. In this case, the same problem may occur.

  However, Patent Documents 1 and 2 do not describe the problem caused by the tension generated in the longitudinal direction of the curtain airbag and the solution thereof.

  Therefore, the present invention provides an interior structure of a vehicle including a curtain airbag that can prevent the curtain airbag from being caught by a seat belt anchor even when a longitudinal tension is generated in the airbag when the curtain airbag is deployed. It is an issue to provide.

  In order to solve the above-described problems, the present invention is configured as follows.

  First, the invention according to claim 1 of the present application is formed of a soft roof trim that forms a ceiling and a synthetic resin harder than the roof trim, and forms a vehicle inner surface of a rear pillar that is positioned at the rear of the vehicle. A rear pillar trim, a seat belt anchor provided on the vehicle inner surface of the intermediate pillar located in front of the rear pillar and projecting inward of the vehicle; a side edge of the roof trim and an inner side of the rear pillar trim of the intermediate pillar; The gas is introduced from the front of the upper pillar to the lower part of the rear pillar, and when a predetermined condition is satisfied, gas is introduced in front of the intermediate pillar, and includes at least the front edge of the rear pillar. An interior structure of a vehicle including a curtain airbag that extends so as to cover an inner surface of the vehicle, wherein the curtain airbag is formed from a rear pillar trim. When opening, the seat belt anchor is deployed in sliding contact with the inner surface of the intermediate pillar, and the seat belt anchor is above the tension line generated in the vehicle front-rear direction in the curtain airbag when the seat belt anchor is in a predetermined deployed state. It is characterized by being installed in.

  According to a second aspect of the present invention, there is provided an interior structure of a vehicle including the curtain airbag according to the first aspect, wherein the curtain airbag is arranged at a lower edge portion of the airbag in a predetermined deployed state. A predetermined tension is generated on a line connecting a portion of the vehicle front-rear direction below the gas inlet and an upper end of the rear pillar trim, and the seat belt anchor is installed above the tension line. To do.

  According to a third aspect of the present invention, in the interior structure of the vehicle including the curtain airbag according to the first aspect, the curtain airbag has a front end portion at a position lower than an upper end portion of the rear pillar trim. While being fixed to the vehicle body, in a predetermined deployment state, a predetermined tension is generated on a line connecting the fixing point and the upper end of the rear pillar trim, and the seat belt anchor is disposed above the tension line. It is characterized by being.

  Furthermore, the invention according to claim 4 is an interior structure of a vehicle including the curtain airbag according to any one of claims 1 to 3, wherein the rear pillar trim includes a curtain airbag when the curtain airbag is deployed. Deformation facilitating means for facilitating the deformation is provided.

  According to a fifth aspect of the present invention, there is provided a soft roof trim that forms a ceiling, and a rear pillar trim that is made of a synthetic resin harder than the roof trim and forms a vehicle inner surface of a rear pillar located at the rear of the vehicle. And a seat belt anchor provided on the vehicle inner surface of the intermediate pillar located in front of the rear pillar so as to protrude toward the vehicle inner side, and an upper front of the intermediate pillar on the side edge of the roof trim and the inner side of the rear pillar trim. To the lower part of the rear pillar, and when a predetermined condition is satisfied, gas is introduced in front of the intermediate pillar, and includes at least the front edge of the rear pillar including the intermediate pillar. An interior structure of a vehicle including a curtain airbag that extends so as to cover the surface of the intermediate pillar, the curtain airbag being a vehicle inner surface of the intermediate pillar When unfolding while sliding in contact with a predetermined pressing force and deploying the roof trim forward from the upper end of the rear pillar trim toward the passenger compartment side, When deployed with a pressing force of 1 and deployed downward from the upper end portion of the rear pillar trim, it is greater than the first pushing force with respect to a portion below the predetermined upper portion of the vehicle inner surface of the intermediate pillar. The seatbelt anchor is developed by a second pressing force, and the seatbelt anchor is installed on the predetermined upper portion of the inner side surface of the intermediate pillar.

  Next, the effect of the present invention will be described.

  First, according to the first aspect of the present invention, when a tension in the vehicle front-rear direction is generated in the curtain airbag when the curtain airbag is in a predetermined deployed state, the seat belt anchor is installed above the tension line. That is, since the tension is not large when the curtain airbag exceeds the seat belt anchor, even when the curtain airbag is deployed while sliding on the inner surface of the intermediate pillar, it is difficult to be caught by the seat belt anchor. That is, the deployability of the curtain airbag is good.

  By the way, as described above, when the rear pillar trim is formed of a synthetic resin harder than the roof trim and the gas is introduced at the front side of the intermediate pillar trim, the rear pillar trim is more difficult to deform than the roof trim. In spite of the fact that the front side of the rear part is developed in the external space, the rear end part still remains inside the rear pillar trim. In this case, the rear side is pulled by the front side that has greatly expanded downward in the external space, so that the rear end portion remaining on the front side and the inner side of the rear pillar trim, particularly the upper end portion of the rear pillar trim. A tension in the front-rear direction is generated between the two. Therefore, there is a problem that the curtain airbag is easily caught by the seat belt anchor even during a period during the deployment.

  Claims 2 and 3 specify the tension generation state and clarify the correspondence in this case. First, in the invention according to claim 2, the curtain airbag is in a predetermined deployed state. When a predetermined tension is generated on a line connecting the lower edge of the curtain airbag in the vehicle front-rear direction below the gas inlet and the upper end of the rear pillar trim, the seat belt anchor is connected to the tension line. Accordingly, the same hooking prevention effect as that of the first aspect can be obtained.

  Further, in the invention according to claim 3, the curtain airbag is fixed to the vehicle body at a position where the front end portion is lower than the upper end portion of the rear pillar trim, and in a predetermined deployed state, the fixing point; When a predetermined tension is generated on a line connecting the upper end of the rear pillar trim, the seat belt anchor is disposed above the tension line. The prevention effect will be obtained.

  Further, according to the invention described in claim 4, since the rear pillar trim is provided with the deployment facilitating means for facilitating deformation at the time of deployment of the airbag, the tension generated in the initial deployment is reduced, The effect of preventing the seat belt anchor from being caught when the curtain airbag is deployed is ensured.

  According to the fifth aspect of the present invention, when the roof trim in front of the upper end of the rear pillar trim is pushed toward the vehicle compartment side and deployed, the intermediate pillar has a predetermined upper portion on the vehicle inner surface. When deploying with the first pressing force and deploying downward from the upper end of the rear pillar trim, the first pressing force is applied to a portion below the predetermined upper portion of the vehicle inner surface of the intermediate pillar. The seat belt anchor is installed at the predetermined upper portion of the inner side surface of the intermediate pillar, that is, when the curtain airbag exceeds the seat belt anchor. Then, since the pressing force is in a relatively small state, even if the intermediate pillar is developed while being slidably in contact with the inner surface of the intermediate pillar, it is difficult to be caught by the seat belt anchor. That is, the deployability of the curtain airbag is good.

  Embodiments of the present invention will be described below.

  As shown in FIG. 1, the vehicle 1 includes a front seat 2, a second row seat 3 disposed behind the front seat 2, and a third row disposed behind the second seat 3. And a sheet 4. The vehicle 1 has a side door 5 for the front seat 2 and a side door 6 for the second row seat 3 as side doors for raising and lowering the occupant. 7, B pillar 8, C pillar 9, and D pillar 10. Here, the C pillar 9 corresponds to an intermediate pillar in the claims, and the D pillar 10 corresponds to a rear pillar in the claims.

  The side door 5 opens and closes an entrance / exit 11 between the A pillar 7 and the B pillar 8 and includes a side window glass 12 that is driven to open and close in the vertical direction. The side door 6 opens and closes a boarding / alighting opening 13 between the B pillar 8 and the C pillar 9 and includes a side window glass 14 that is driven to open and close in the vertical direction. A rear side opening 15 is provided between the C pillar 9 and the D pillar 10, and the rear side opening 15 is covered with a side window glass 16. Here, the side window glasses 15 and 16 and the pillars 9 and 10 and their peripheral portions correspond to the side window portions in the claims.

  The three side window glasses 12, 14, and 16 are almost entirely covered from the vehicle interior by a curtain airbag 17 that is activated, for example, at the time of a side collision or at the time of prediction, at the time of rollover or at the time of prediction. It is like that. In the stored state, the curtain airbag 17 is folded into a bellows shape to form a single rod-like body, and is fixed to the vehicle body along the edges of the three side window glasses 12, 14, 16 in the immediate vicinity thereof. ing. Specifically, the curtain airbag 17 has a front end portion fixed to the lower portion of the A pillar 7, a rear end portion fixed to the lower portion of the D pillar 10, and an intermediate portion between the front end portion and the rear end portion is a side window. It is fixed to the vehicle body on a line connecting the vicinity of the upper edges of the glasses 12, 14, 16 in the front-rear direction.

  When the curtain airbag 17 is inflated and deployed, the curtain airbag 17 is deployed in the passenger compartment along the side window glasses 12, 14, 16 as shown in FIG. 2, and all the side window glasses 12, 14, 16 are installed in the vehicle. It is made to cover from the indoor side. And the magnitude | size is set so that the lower end of the curtain airbag 17 may be located slightly lower than the lower edge part of each side window glass 12,14,16.

  The curtain airbag 17 is formed into a bag shape by sewing (not shown) along the vicinity of the outer edge of two overlapping base fabrics having substantially the same shape, and the curtain airbag 17 is connected to the inflator 18 via the gas inlet port 17m. Gas can be filled. Further, the two base fabrics are subjected to sewing 17a to 17e having a curved shape or a closed loop shape in a superposed state as shown in FIG. The region surrounded by the stitches 17b and 17d forms non-inflatable portions 17f and 17g that are not filled with gas, and the other portions constitute inflatable portions. In addition, the formation position of such non-expanding parts 17f and 17g is set to a position away from the head of the occupant seated on each seat 2-4. By providing such a non-inflatable part, the curtain airbag 17 can be inflated and deployed at an early stage. The stitches 17a, 17c, and 17e are provided to prevent the curtain airbag 17 from being excessively thick in the vehicle width direction when the gas is filled. Also have. A plurality of fixed portions P... P are provided on the upper edge of the curtain airbag 17 along the upper edges of the side window glasses 12, 14, 16. A tether 17 h is provided at the front end of the curtain airbag 17, and the tether 17 h is fixed to the lower part of the A pillar 7 at the lower part.

  In the curtain airbag 17 stored in this manner, the deployment orientation direction is a direction in which the curtain airbag 17 is deployed in an initiative from the stored state when the curtain airbag 17 is fixed to the vehicle body at a normal mounting and fixing position. For example, when the curtain airbag 17 is folded in a bellows shape from its lower end (lower end in the deployed state), the deployment leading end side in the direction in which the bellows extends is the deployment directing direction. The curtain airbag 17 may be folded by roll.

  As shown in FIGS. 1 and 2, an inflator 18 is provided in front of the upper portion of the C pillar 9, and supplies a gas pressure for inflation and deployment to the curtain airbag 17. The gas pressure generated when the inflator 18 is detonated is supplied to the curtain airbag 17 in the housed state via the supply system path 19. The downstream end of the supply passage 19 is connected to the gas inlet 17m at a substantially intermediate position in the front-rear direction of the curtain airbag 17 in the stored state on the front side of the intermediate pillar 9.

  Each of the pillars 7 to 10 described above is covered from the vehicle interior side by a pillar trim. For example, as shown in FIG. 3, the C pillar 9 is covered with a C pillar trim 56, and the D pillar 10 is covered with a D pillar trim 26. Further, the passenger compartment side of the roof panel 30 (see FIG. 5) is covered with a roof trim 37. The roof trim 37 is formed of a soft material such as an elastic body, for example, a surface of urethane foam or the like covered with a non-woven fabric, and the like, and can be deformed relatively easily with an external force that is pressed by fingers. ing. Each pillar trim such as the C pillar trim 56 and the D pillar trim 26 is harder than the roof trim 37 and is formed of a hard synthetic resin, for example, polypropylene, and can be easily deformed by an external force pressed by a finger. It is difficult to do. In particular, the D pillar trim 26 may be formed of TP0 (polypropylene composed of a thermo-plastic olefin) which is not easily damaged even at a low temperature (for example, −20 ° C. or less). As described above, the pillar trim such as the D pillar trim 26 is made harder (sufficiently hard) than the roof trim 37, and is not easily damaged even when a load or the like comes into contact therewith. In the D pillar trim 26, only the portion receiving the pressure at the time of inflation and deployment from the curtain airbag 17 and the vicinity thereof may be partially made of the above-described synthetic resin which is not easily damaged.

  As shown in FIG. 5, a roof side as a strength member having a closed cross-sectional shape, which includes a roof side inner panel 31 and a roof side outer panel 32 and extends in the front-rear direction, at an outer end in the vehicle width direction of the roof panel 30. A rail 30R is provided. A joint flange portion 33 that extends downward is provided at the lower end of the roof side rail 30 </ b> R, and the upper edge of the side window glass 16 is fixed to the joint flange portion 33 by an adhesive 34. Yes. As shown in FIGS. 3 and 5, the roof trim 37 has an outer edge portion in the vehicle width direction that slightly protrudes outward in the vehicle width direction between the C pillar trim 56 and the D pillar trim 26. Located in the immediate vicinity. An edge molding 35 is provided on the joint flange portion 33.

  As shown in FIG. 6, the D pillar 10 is formed in a closed cross-sectional shape by an inner panel 21 and an outer panel 22, and a joining flange portion 23 that extends short forward is formed at a front end portion thereof. As shown in FIG. 7, the rear edge portion of the side window glass 16 is fixed to the outer surface of the joining flange portion 23 with an adhesive 24. As shown in FIG. 6, the D-pillar trim 26 covering the D-pillar 10 has a substantially L-shaped horizontal cross-section, and as shown in FIG. The side part 26b that extends and the direction perpendicular to the surface faces the inner side in the vehicle width direction, extends from the front end of the side part 26b to the outer side in the vehicle width direction, and widens in the vehicle width direction. And a front surface portion 26c. And the vehicle width direction outer side edge part 26a (henceforth predetermined edge part 26a) of the front surface part 26c is located in the vicinity of the rear edge part of the side window glass 16, and is extended to the said joining flange part 23 vicinity. Yes. Further, as shown in FIG. 4, the front surface portion 26c is slightly positioned so that the vicinity of the predetermined edge portion 26a is gradually positioned rearward as it goes outward in the vehicle width direction in a plan view (when viewed from above the vehicle body). Tilt is set.

  As shown in FIGS. 9 and 10, the C pillar 9 is formed in a closed cross section by an inner panel 51 and an outer panel 52, and the upper end of the C pillar trim 56 that covers the C pillar 9 from the vehicle interior side is C The pillar 9 is slightly separated from the inner surface (inner panel 51) in the vehicle width direction, and a gap having a gap in the vehicle width direction is formed between the C pillar 9 and the C pillar trim 56.

  As shown in FIGS. 5, 6, and 10, the curtain airbag 17 in the stored state is fixed to the vehicle body via mounting brackets 41, 42 and the like. The mounting bracket 41 shown in FIG. 6 is for mounting to the D pillar 10, and the mounting bracket 42 shown in FIG. 10 is for fixing to the roof side rail 30R. The mounting bracket 42 has an extension 42a extending downward. The extended portion 42a is inclined so as to be located on the inner side in the vehicle width direction toward the lower side, and its directing direction is slightly inward in the vehicle width direction from the inner end position in the vehicle width direction of the C pillar trim 56. Set to be oriented. By providing such an extension 42a, the curtain airbag 17 that is inflated and deployed is reliably deployed in the vehicle interior without any interference with the C pillar trim 56 by the guide action of the extension 42a. It will be.

  FIG. 4 shows an arrangement example of the curtain airbag 17 in the housed state in the portion extending from the upper edge portion to the rear edge portion of the side window glass 16. In FIG. 4, the mounting brackets 41 and 42 are not shown in order to clearly show the arrangement state of the curtain airbag 17. As is clear from FIG. 4, the curtain airbag 17 in the housed state extends in the front-rear direction from the vicinity of the front edge of the upper edge of the side window glass 16 to the vicinity of the rear edge in a plan view. The portion along the rear edge of the side window glass 16 is set so as to be located on the outermost side in the vehicle width direction. The inflator 18 elongated in the front-rear direction is fixed to the roof side rail 30R via a mounting bracket (not shown).

  As shown in FIG. 1, seat belts 61, 71, 81 are provided on the sides of the seats 2, 3, 4, respectively. One end sides of these seat belts 61, 71, 81 are accommodated in retractors 63, 73, 83 via seat belt anchors 62, 72, 82 attached to the B, C, D pillars 8, 9, 10 respectively. Yes.

  Here, the structure of the seat belt anchor 72 provided in the C pillar 9 which is the subject of the present invention will be described in detail. As shown in FIG. 11, the seat belt anchor 72 has one end portion fixed to the inner panel 51 and the other end portion passing through a hole 56 a provided in the C pillar trim 56, and a seat belt 71. A seat belt locking member 75 having a hole 75a to be inserted, a bolt 76 that fixes the locking member 75 to the boss member 74 so as to be rotatable, and a case that covers the seat belt locking member 75 and the head of the bolt 76 77. A plurality of ribs 77 a are formed on the inner surface of the case 77. The rib 77a is for absorbing an impact when a human body or the like hits the seat belt anchor 72. Therefore, the seat belt anchor 72 has a limit in reducing the width in the vehicle width direction. In addition, a predetermined amount of gap S is provided between the C pillar trim 56 and the surface of the case 77 facing the C pillar trim 56. The purpose of this is to make the seat belt anchor 72 rotate smoothly, to absorb manufacturing errors of these members, and to prevent abnormal noise caused by the contact of these members. In other words, the seat belt anchor 72 protrudes relatively large from the inner surface of the C pillar trim 56 by an amount that can satisfy these conditions.

  Next, the operation of the above configuration will be described. When the curtain airbag 17 is in the retracted state, when a predetermined condition such as when a side collision is detected or predicted or when a vehicle rollover is detected or predicted, the inflator is satisfied. 18 is detonated. The gas pressure generated by the explosion of the inflator 18 is supplied to the curtain airbag 17 in the housed state, and the curtain airbag 17 is inflated and deployed in the vehicle interior as shown in FIG.

  Expansion and deployment of the curtain airbag 17 into the passenger compartment is performed by displacing the outer edge of the roof trim 37 in the vehicle width direction as indicated by an arrow α in FIG. 5 (the curtain airbag that has been expanded and deployed). 17 is indicated by a one-dot chain edge). Since the roof trim 37 is soft, it can be easily deformed downward. On the vehicle rear side, the curtain airbag 17 is inflated and deployed while displacing (deforming) at least the upper portion of the predetermined edge 26a of the D pillar trim 26 forward as indicated by an arrow β in FIG. (The inflated and deployed curtain airbag 17 is shown with a one-dot chain edge). In FIG. 6, the curtain airbag 17 is inflated and deployed into the vehicle compartment through a gap formed between the side window glass 16 and the predetermined end edge 26a. The portion 26a has an inflatable portion that is inflated in the vehicle width direction. Therefore, it is necessary to displace the upper portion of the predetermined end edge portion 26a forward inward while sufficiently displacing the upper portion of the predetermined edge 26a. The portion of the curtain airbag 17 that is in the stored state along the rear edge of the side window glass 16 is largely directed outward in the vehicle width direction as indicated by an arrow γ in FIG. The gap that becomes the path of the curtain airbag 17 to be formed between the portion 26a and the side window glass 16 is minimized.

  By the way, as explained in the background art, when the gas inlet 17m of the curtain airbag 17 is positioned in front of the intermediate pillar 9, gas is introduced into the front center. Further, if the D pillar trim 9 is made of a relatively hard synthetic resin, the rear end portion of the curtain airbag 17 is difficult to deploy, and the front side of the curtain airbag is deployed in the external space, The rear end portion still remains inside the rear pillar trim. That is, at the beginning of deployment of the curtain airbag 17, the front portion of the curtain airbag 17 (for example, the front seat 2 corresponds to the front seat 2) due to the non-inflatable portions 17 f and 17 g and the sewing 17 a, c and e of the curtain airbag 17. When the gas is preferentially introduced into the part), for example, a developed state as shown in FIG. 12 occurs (predetermined developed state in claim 3). At this time, since the upper portion of the rear end portion of the curtain airbag 17 is in a state of being caught by the front edge portion of the upper end portion of the D pillar trim 26, the front fixing point Pf and the front end portion of the D pillar trim 26 are in front of each other. A tension line TL1 is generated on the line connecting the edge X.

  The state at this time will be described in terms of a plane. As shown in FIG. 15, the predetermined end edge portion 26 a of the D pillar trim 26 is located on the outer side in the vehicle width direction with respect to the vehicle inner surface of the C pillar trim 56 of the C pillar 9. Therefore, the curtain airbag 17 descends while sliding in a state where the curtain airbag 17 is pressed against the C pillar trim 56 by the tension. In this case, in the state before the curtain airbag 17 is deployed as shown in FIG. 12, the outer surface of the curtain airbag 17 may come into contact with the C-pillar trim 56. The pressing force to the C pillar trim 56 is small as compared with the case where the pillar trim 26 is developed toward the lower part. Therefore, if the seat belt anchor 72 is provided on the tension line TL1 or below the tension line TL1 in the C pillar trim 56, the curtain airbag 17 is easily caught on the anchor 72 during further deployment. Further, the lower edge portion of the curtain airbag 17 can easily enter the gap S between the case 77 of the seat belt anchor 72 and the C pillar trim 56.

  In addition, when the gas is preferentially introduced to the central portion of the curtain airbag 17 in the front-rear direction, the portion of the lower edge of the airbag 17 that hits the lower side of the gas inlet 17m in the front-rear direction of the vehicle is vigorous. Since the gas is blown in, the rear end side of the curtain airbag 17 has not yet been deployed, but the front side is largely deployed as shown in FIG. Expanded state). In this state, similarly, the curtain airbag 17 also includes a portion Y that hits the lower side of the airbag 17 in the vehicle longitudinal direction below the gas inlet 17m and a front edge of the upper end portion of the rear pillar trim. The tension line TL2 is generated on the line connecting the part X. In this case, in the state before the curtain airbag 17 is deployed as shown in FIG. 13, the outer surface of the curtain airbag 17 may come into contact with the C pillar trim 56. The pressing force to the C pillar trim 56 is small as compared with the case where the pillar trim 26 is developed toward the lower part. Therefore, when the seat belt anchor 72 is provided on or below the tension line TL2 in the C pillar trim 56, a problem similar to that of the tension line TL1 occurs during further deployment.

  Therefore, in the present embodiment, the seat belt anchor 72 is provided above the two tension lines TL1 or TL2. According to this, since the tension and the pressing force are not large at the time when the curtain airbag exceeds the seat belt anchor 72, it is difficult to be caught by the seat belt anchor 72, and it is difficult to enter the gap S. That is, the deployability of the curtain airbag 17 is good. In the present embodiment, the upper portion of the tension line TL1 or TL2 in the C pillar trim 56 corresponds to a predetermined upper portion of the vehicle inner surface of the intermediate pillar in claim 5.

  When the deployment to the state shown in FIG. 14 is completed (predetermined deployment state), the curtain airbag 17 sets the tension line TL3 on the line connecting the fixed point Pf at the front end and the fixed point Pr at the rear end. As a result, a sufficient counter force against the rollover of the vehicle is generated.

  The tension lines TL1, TL2, and TL3 described above are examples of curtain airbags, roof trims, D pillar trims, and the like configured as described above, and various tensions having different inclinations and heights depending on these configuration modes. In this case, the present invention can be applied. When a plurality of tension lines are generated, a seat belt anchor may be provided above the tension line that crosses the intermediate pillar at the highest position. In the above-described embodiment, when both the tension line TL2 and the tension line TL1 are generated, the position may be the upper position of the tension line TL2, and the deployability can be improved more reliably if the position is the upper position of the tension line tension line TL1.

  The second, third, and fourth embodiments will be described below. These embodiments improve the ease of deployment of the curtain airbag 17 from the D-pillar 10 and facilitate the deployment facilitating means of claim 4.

  That is, as shown in FIG. 16, in the second embodiment, when the D pillar trim 26 receives a predetermined forward pressing force with respect to the D pillar trim 26, the D pillar trim 26 is almost entirely attached to the D pillar 10. It is designed to be able to displace forward. That is, a locking projection 29 a is formed at the tip of the support stay 29 protruding from the back side of the front surface portion 26 c, and the locking projection 29 a is locked to the D pillar 10. According to such a configuration, when a forward pressing force of a predetermined level or more is applied to the front surface portion 26c, the locking action of the locking projection 29a with respect to the D pillar 10 is easily released. As indicated by the chain line, the D pillar trim 26 is easily displaced almost entirely forward, and the deployability of the curtain airbag 17 is improved.

  Therefore, if configured as in the second embodiment, the curtain airbag 17 is less likely to be caught on the rear end portion of the D pillar trim 26. As a result, the tension lines TL1, TL2 as shown in FIGS. Is less likely to occur. That is, in this case, the seat belt anchor 72 may be provided on the upper side in the vicinity of the tension line TL3 shown in FIG.

  In the third embodiment, as shown in FIG. 17, in the front portion 26c of the D pillar trim 26, a predetermined portion including the predetermined end portion 26a, more specifically, the front portion 26c in the vehicle width direction. A portion closer to the outer side and an upper portion than the substantially middle position in the vertical direction is constituted by a cover member 27 formed separately. The cover member 27 is integrated with another portion (main body portion) of the D pillar trim 26 via a hinge 28 so that the front surface portion 26c is flush with the other surface. The hinge 28 is formed in a loop shape with, for example, a soft synthetic resin, and the cover member 27 is configured to be easily swingable forward about the hinge 28. The cover member 27 is locked to the D pillar 10 by using a locking projection 27b formed at the tip of the support stay 27a that protrudes from the back surface thereof. According to such a configuration, when the curtain airbag 17 is inflated and deployed, the locking action of the locking projection 27b with respect to the D pillar 10 is easily released, and as shown by the one-dot chain line, as shown in FIG. Easily swings forward about the hinge 28, and the deployability of the curtain airbag 17 is extremely good. Therefore, also in the third embodiment, the same effect as that of the second embodiment can be obtained.

  FIG. 18 shows a fourth embodiment which is a modification of the third embodiment. That is, in this embodiment, a portion corresponding to the cover member 27 is integrally formed on the front surface portion 26 of the D biller trim 26. That is, a groove 26 d that functions as a hinge 28 from the back side of the front surface portion 26 is formed at a boundary line portion between the cover portion 27 ′ corresponding to the cover member 27 and other portions. A state when the curtain airbag 17 is stored is shown by a solid line in FIG. 18, and a state when the curtain airbag 17 is inflated and deployed is shown by a one-dot chain line in FIG. Therefore, also in the fourth embodiment, the same effect as that of the second embodiment can be obtained.

  In the first to fourth embodiments, the case where the seat belt anchor 72 of the seat belt 71 for the seat 3 is provided on the C pillar 9 has been described. However, the present invention describes the C pillar 9 itself. In addition, the present invention can be applied to those provided in the vicinity thereof. For example, the present invention can also be applied to a structure in which a bracket that extends downward is attached to the roof side side rail 30R in the vicinity of the rear of the C pillar 9 and a seat belt anchor 72 is attached to the bracket.

  The present invention can be widely applied to vehicles having curtain airbags that generate tension in the vehicle longitudinal direction when deployed.

It is the simplified side sectional view which looked at the curtain airbag in a stowed state, and the seatbelt from the vehicle interior side. FIG. 2 is a view corresponding to FIG. 1, showing a state when a curtain airbag is inflated and deployed in a vehicle interior. It is a perspective view when the rear part pillar trim vicinity is seen from the vehicle interior side. It is a top view which shows the example of arrangement | positioning of the curtain bag in the accommodation state by the side window glass vicinity, and the setting example of the expansion | deployment directivity direction. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a principal part expanded sectional view of FIG. It is the external view which looked at C pillar from the vehicle inside. It is CC sectional drawing of FIG. It is DD sectional drawing of FIG. It is a principal part expanded sectional view of FIG. FIG. 3 is a view corresponding to FIG. 2 in a predetermined unfolded state (No. 1). FIG. 3 is a view corresponding to FIG. 2 in a predetermined unfolded state (part 2). FIG. 3 is a view corresponding to FIG. 2 in a predetermined unfolded state (No. 3). FIG. 10 is a view corresponding to FIGS. 5 and 9 for explaining the deployment of the airbag at the initial stage of deployment. It is a figure equivalent to FIG. 6 about 2nd Embodiment. It is a figure equivalent to FIG. 6 about 3rd Embodiment. It is a figure equivalent to FIG. 6 about 4th Embodiment.

Explanation of symbols

1: Vehicle 9: C pillar (intermediate pillar)
10: D pillar (rear pillar)
17: Curtain airbag 26: D pillar trim (rear pillar trim)
37: Roof trim 56: C-pillar trim (the inner surface of the intermediate pillar)
72: Seat belt anchors TL1, TL2, TL3: Tension line

Claims (5)

A soft roof trim that forms the ceiling, a rear pillar trim that is made of a synthetic resin harder than the roof trim and that forms the inner surface of the rear pillar located at the rear of the vehicle, and an intermediate that is located in front of the rear pillar Seat belt anchors provided on the inner side of the pillar projecting from the inner side of the vehicle, and the side edge of the roof trim and the inner side of the rear pillar trim are accommodated from the upper front of the intermediate pillar to the lower part of the rear pillar. When the above is established, a curtain air bag is introduced so that gas is introduced in front of the intermediate pillar so as to cover at least a front-side portion of the side window portion in front of the rear pillar including the intermediate pillar. The vehicle interior structure with
When the curtain airbag is deployed from the rear pillar trim, the curtain airbag is deployed while being in sliding contact with the vehicle inner surface of the intermediate pillar,
The interior structure of a vehicle with a curtain airbag, wherein the seat belt anchor is installed above a tension line that is generated in the longitudinal direction of the curtain airbag when the seat belt anchor is in a predetermined deployed state. . In the interior structure of a vehicle including the curtain airbag according to claim 1,
The curtain airbag, in a predetermined deployment state, generates a predetermined tension on a line connecting a portion of the lower edge portion of the airbag that hits the lower side of the gas inlet in the vehicle front-rear direction and an upper end portion of the rear pillar trim,
The interior structure of a vehicle including a curtain airbag, wherein the seat belt anchor is installed above the tension line. In the interior structure of a vehicle including the curtain airbag according to claim 1,
The curtain airbag is fixed to the vehicle body at a position where the front end portion is lower than the upper end portion of the rear pillar trim, and in a predetermined deployed state, on the line connecting the fixing point and the upper end portion of the rear pillar trim. Produce a certain tension,
The interior structure of a vehicle including a curtain airbag, wherein the seat belt anchor is disposed above the tension line. In the interior structure of a vehicle provided with the curtain airbag according to any one of claims 1 to 3,
An interior structure of a vehicle equipped with a curtain airbag, wherein the rear pillar trim is provided with a deformation facilitating means for facilitating deformation when the curtain airbag is deployed. A soft roof trim that forms the ceiling, a rear pillar trim that is made of a synthetic resin harder than the roof trim and that forms the inner surface of the rear pillar located at the rear of the vehicle, and an intermediate that is located in front of the rear pillar Seat belt anchors projecting on the vehicle inner surface of the pillar and are accommodated from the upper front of the intermediate pillar to the lower portion of the rear pillar inside the side edge of the roof trim and the inner side of the rear pillar trim. When the above is established, a curtain air bag is introduced so that gas is introduced in front of the intermediate pillar so as to cover at least a front-side portion of the side window portion in front of the rear pillar including the intermediate pillar. The vehicle interior structure with
The curtain airbag is deployed while being in sliding contact with a predetermined pressing force on the vehicle inner surface of the intermediate pillar,
When the roof trim in front of the upper end of the rear pillar trim is pushed and deployed toward the vehicle compartment side, it is deployed with a first pressing force against a predetermined upper portion of the inner side surface of the intermediate pillar, and the upper end of the rear pillar trim is When deploying downward from the part, the intermediate pillar is deployed with a second pressing force larger than the first pressing force with respect to a portion below the predetermined upper portion of the inner surface of the intermediate pillar,
The interior structure of a vehicle including a curtain airbag, wherein the seat belt anchor is installed on the predetermined upper portion of an inner pillar surface of the intermediate pillar.

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