JP4873023B2 - Vehicle occupant protection device - Google Patents

Description

The present invention is stored positioned along the roof side rail, and at the side collision of the vehicle, to an occupant protection device for a vehicle with an airbag that extends deployed along the side wall surface of the passenger compartment by the operation of the inflator .

  Conventionally, as shown in Patent Document 1 below, in the arrangement structure of the head protection airbag that expands and deploys in a curtain shape across the pillar and the roof side rail, it is folded along the roof side rail. Pillar trim and roof trim (roof head lining) are provided by providing guide means such as a jump base below the stored airbag and inflating the airbag along the wall surface of the jab base when a vehicle crashes. The outer side of the vehicle width direction is pushed open to expand and deploy the airbag in a curtain shape below the roof side rail.

Japanese Patent Application Laid-Open No. 11-91490

  Constructed to deploy the airbag stored in a folded state along the roof side rails by inflating the airbag along the wall surface of the jab stand in the event of a side collision of the vehicle as described above. In this case, there is a problem that if the airbag is inhibited from being deployed, the airbag cannot be expanded and deployed in an appropriate state. For example, when an anchor cover that covers the belt anchor installation part that supports the upper end of the seat belt is installed at a predetermined position of the pillar trim, the airbag is expanded in an appropriate state when the airbag is caught on the anchor cover. There was a problem that it could not be deployed.

The present invention has been made in view of the above, and its object is to provide an occupant protection device for a vehicle can be expanded deployed side impact at the airbag of the vehicle in the proper state.

The invention according to claim 1, is storable arranged supported along the roof side rail, and at the side collision of the vehicle, the air bag to expand deployed along the side wall surface of the passenger compartment by the operation of the inflator, a roof side rail A vehicle occupant protection device having a roof trim that covers a wall surface on the vehicle interior side and a center pillar trim that covers a wall surface on the vehicle interior side of the center pillar, wherein the airbag has a front end fixed to the front pillar. In the state where the rear end portion is fixed to the rear pillar, the side wall surface of the passenger compartment is unfolded so as to cover the curtain, and the center pillar trim includes an anchor that covers the installation portion of the belt anchor that supports the upper end portion of the seat belt. cover is installed, the upper end portion of the center pillar trim, the vehicle interior side of the center pillar top near the vehicle width direction outer side end of the roof trim And a guide member for guiding the airbag under the retracted airbag in the vicinity of the center pillar side overlapping portion, and guiding the airbag by the guide member. The direction is set above the upper end portion of the center pillar trim and toward the vehicle exterior wall surface of the roof trim at a position on the vehicle interior side. The vehicle interior side above the rear pillar is a rear pillar at the front portion thereof. A rear pillar trim extending inward in the vehicle width direction from the vicinity of the front edge is provided , and a rear portion of the roof trim extends to the rear side of the rear pillar trim, and an upper portion of the rear pillar trim is provided at the rear portion of the roof trim. An extension portion having a front edge that extends to the lower side of the vehicle body while overlapping with the rear edge and a lower edge that extends from the lower end to the rear side is one. In the upper part of the rear pillar trim, a notch corresponding to the front edge and the lower edge of the extension is formed, and the notch of the notch formed in the upper part of the rear pillar trim is formed. A superposition part is formed by superimposing the front edge on the front edge of the extension part, and when the airbag is inflated and deployed, from the superposition part of the extension part of the roof trim and the upper part of the rear pillar trim from the front side of the vehicle body the by bulging, in which the wall of the vehicle interior, including the rear edge of the rear pillar located in front of the front edge of the extending portion of the upper Symbol roof trim and configured to cover by the air bag.

The invention according to claim 2 is the vehicle occupant protection device according to claim 1, wherein the lower edge of the notch formed in the upper part of the rear pillar trim is overlapped with the lower edge of the extension part. overlapping portion is formed, during inflation and deployment of the air bag, it is by separating the upper Symbol polymerization unit which is configured to inflate the airbag downwardly from the lower edge of the extending portion.

  According to a third aspect of the present invention, in the vehicle occupant protection device according to the first aspect, the upper end portion of the anchor cover is a surface orthogonal to the vehicle interior side wall surface above the center pillar trim when viewed from the front-rear direction. In contrast, an inclined surface is formed so that the inner side of the passenger compartment is positioned below.

  According to a fourth aspect of the present invention, in the vehicle occupant protection device according to the first aspect of the present invention, the inflator is installed on the rear pillar and is configured such that gas is supplied from the rear portion of the airbag.

  According to a fifth aspect of the present invention, in the vehicle occupant protection device according to the first aspect, the front end portion of the airbag is fixed to the front pillar via a longitudinal fixing member.

According to a sixth aspect of the present invention, in the vehicle occupant protection device according to the first aspect of the present invention, the front edge of the extension portion provided at the rear portion of the roof trim is provided at the rear edge of the upper portion of the rear pillar trim. A flange portion in line contact is formed.

According to a seventh aspect of the present invention, in the vehicle occupant protection device according to the first aspect, the rear portion of the airbag is stored and disposed so as to extend downward of the vehicle body along the rear side portion of the rear pillar. The inflator is disposed on the lower side.

As described above, a guide member for guiding the airbag is provided in the vicinity of the center pillar side overlapping portion below the airbag in the retracted state, and the guide direction of the airbag by the guide member is set to be higher than the upper end portion of the center pillar trim. It is set toward the vehicle outer wall surface of the roof trim at a position above the vehicle interior side, and the airbag is deployed from the overlapping portion of the rear pillar trim and the roof trim, and the vehicle interior side above the rear pillar trim When the airbag is expanded and deployed, the expansion of the airbag can be prevented from being blocked by the anchor cover, and the anchor cover is provided on the center pillar trim. Nevertheless, the advantage that the side impact at the air bag of the vehicle can be smoothly expanded deployment That.

It is explanatory drawing which shows embodiment of the passenger | crew protection device of the vehicle which concerns on this invention. It is the II-II sectional view taken on the line of FIG. It is the III-III sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. It is explanatory drawing which shows the specific structure of an anchor cover. It is the VI-VI sectional view taken on the line of FIG. It is explanatory drawing which shows the expansion | deployment state of an airbag. FIG. 5 is a view corresponding to FIG. 4 showing a deployed state of the airbag. FIG. 4 is a view corresponding to FIG. 3 showing the airbag in a deployed state. It is a perspective view which shows the modification of a guide member. FIG. 5 is a view corresponding to FIG. 4 showing another embodiment of the present invention.

  1 to 3 show an embodiment of a vehicle occupant protection device according to the present invention. The occupant protection device includes an inflator 1 that operates according to a detection signal of a collision detection sensor (not shown) that detects a side collision of the vehicle, and the roof side rail 3 and the rear pillar 4 from the upper end of the front pillar 2 of the vehicle. And the airbag 5 stored in a bellows-folded state and the gas generated when the inflator 1 is operated are supplied to the airbag 5 to expand and deploy the airbag 5. A gas supply pipe 6, and a roof trim 7 and a rear pillar trim 8 that cover the roof side rail 3 and the rear pillar 4 on the vehicle interior side wall are provided.

  The airbag 5 is stored and disposed so as to extend from the upper end portion of the front pillar 2 to the rear side of the vehicle body along the side wall surface of the roof side rail 3. The roof trim 7 is covered with a side portion 7a. The side edge 7a of the roof trim 7 is detachably locked to the weather strip 9 attached to the flange 3a of the roof side rail 3 (see FIG. 2). .

  The rear portion 5a of the airbag 5 is housed and disposed so as to extend to the lower side of the vehicle body along the rear side portion of the rear pillar 4, and the inflator 1 is disposed on the lower side thereof. The rear end portion of the airbag 5 is fixed to the vehicle interior side wall surface of the rear pillar 4, that is, the inner panel 4a of the rear pillar 4 together with the gas supply pipe 6 by a fixing bolt 11 or the like (see FIG. 3). In FIG. 3, reference numeral 20 denotes a rear side door.

  Further, a substantially parallelogram-shaped extending portion 7b covering the rear portion 5a of the airbag 5 housed and disposed so as to extend downward of the vehicle body along the rear side portion of the rear pillar 4 is provided at the rear end of the roof trim 7. (See FIG. 7). The extension 7b of the roof trim 7 has an upper and lower dimension set to approximately half of the rear pillar 4 and a width dimension set to approximately half of the rear pillar 4 so that the upper rear side of the rear pillar 4 is It is configured to cover.

A substantially L-shaped cutout portion corresponding to the extending portion 7b of the roof trim 7 is formed on the upper portion of the rear pillar trim 8, and a portion excluding the rear side portion of the rear pillar 4, that is, the front side of the rear pillar 4 is formed. The portion is covered with the upper portion 8 a of the rear pillar trim 8. Further, as shown in FIG. 3, a flange portion 7c inclined obliquely outward is formed at the front edge of the extended portion 7b of the roof trim 7. Normally, the rear pillar trim is formed on the flange portion 7c. When the rear edge of the upper portion 8a of the 8 is in line contact, both members are superposed.

  When the airbag 5 is expanded and deployed, the vehicle interior side wall surface of the rear pillar 4 has a vehicle compartment from the overlapping portion of the front edge of the extended portion 7b of the roof trim 7 and the rear edge of the upper portion 8a of the rear pillar trim 8. The position of the guide member 12 for guiding the airbag 5 so as to inflate inside corresponds to the overlapping portion of the front edge of the extended portion 7b of the roof trim 7 and the rear edge of the upper portion 8a of the rear pillar trim 8. It is fixed to.

  The extension of the roof trim 7 is between the lower edge of the extension 7b of the roof trim 7 and the lower edge of the notch formed in the rear pillar trim 8 corresponding to the extension 7b. An overlapping portion similar to the overlapping portion formed between the front edge of the portion 7 b and the rear edge of the upper portion 8 a of the rear pillar trim 8 is provided. A similar overlap portion is also provided between the upper edge of the upper portion 8a of the rear pillar trim 8 and the lower edge of the roof trim 7 corresponding thereto.

  A center pillar 10 is disposed between the front pillar 2 and the rear pillar 4, and a center pillar trim 14 is installed on the vehicle interior side of the center pillar 10 as shown in FIG. 4. The center pillar trim 14 is disposed so as to oppose the inner side wall surface of the center pillar 10, that is, the inner panel 15 of the center pillar 10 at a predetermined interval, and is locked to the center pillar 10 by a locking tool 23. As a result, the vehicle interior side wall surface is covered.

  Further, a side end portion of the side portion 7c of the roof trim 7 that covers the side wall surface of the roof side rail 3 in the vehicle interior is formed with a curved portion 7d that curves toward the vehicle outer side. The upper end portion of the center pillar trim 14 is in line contact with the lower surface of the roof trim 7 so that the side end portion of the roof trim 7 and the upper end portion of the center pillar trim 14 are superposed.

  An air bag 5 that expands and deploys on the wall surface (inner panel) of the roof side rail 3 that faces the overlapping portion of the side end portion of the roof trim 7 and the upper end portion of the center pillar trim 14 at the time of a side collision of the vehicle or the like. A guide member 16 is provided for guiding the above.

  The guide member 16 includes a mounting board 17 having a predetermined width that is fixed to the wall surface of the roof side rail 3, a guide part 18 that extends from the lower end of the mounting board 17 toward the vehicle interior side, and a tip of the guide part 18. The roof 5 at a position above the upper end of the center pillar trim 14 and on the vehicle interior side. The trim 7 is configured to face the vehicle outer wall surface of the side portion 7a. That is, the front end portion of the guide portion 18 is set so as to be directed above the upper end portion of the center pillar trim 14 and toward the vehicle interior side.

  The angle θ formed between the mounting substrate 17 of the guide member 16 and the guide portion 18 is set to an obtuse angle, and the tip portion of the folded portion 19 is separated from the wall surface of the roof side rail 3 by a predetermined distance S. The dimension of the folding | turning part 19 is set. As a result, when the occupant's head comes into contact with the side portion 7a of the roof trim 7, the side portion 7a is pressed to the outside of the vehicle and a predetermined load acts on the installation portion of the guide member 16. Until the front end portion of the folded portion 19 abuts against the vehicle interior side wall surface of the roof side rail 3, only the guide portion 18 is deformed, and the front end portion of the folded portion 19 is brought into contact with the vehicle interior side wall surface of the roof side rail 3. After the contact, both the folded portion 19 and the guide portion 18 are deformed.

Further, above the center pillar trim 1 4 of predetermined positions, as shown in FIG. 5, an anchor cover 22 for covering the installation portion of the belt anchor for supporting the upper end portion of the seat belt 21 is installed, the upper end portion of the anchor cover 22 Is formed with an inwardly inclined surface 22a. The inclined surface 22 a of the anchor cover 22 is configured to be a guide surface that guides the airbag 5 when the airbag 5 described below is expanded and deployed. In the illustrated example, the inclination angle γ of the inclined surface 22a is set to about 30 ° relative to a plane orthogonal to the vehicle interior side wall surface of the center pillar trim 1 4.

  A front pillar trim 24 is installed on the vehicle interior side of the front pillar 2 as shown in FIG. Between the front pillar trim 24 and the front pillar 2, one end is locked to a vehicle interior side wall surface of the front pillar 2 by a locking tool 25 described later, and the other end is fixed to the airbag 5. A fixing member 26 made of a belt-like member fixed by means such as sewing on the front end is disposed. In FIG. 6, reference numeral 27 denotes a windshield, and 28 denotes a front side door.

  When the airbag 5 is expanded and deployed, as shown in FIG. 7, the fixing position of the front end portion of the airbag 5 fixed to the front pillar 2 by the fixing member 26 is fixed to the rear pillar 4 by the fixing bolt 11 or the like. The fixing position of one end of the fixing member 26, that is, the fixing member 26 locked to the front pillar 2 by the locking tool 25 so that the fixing position of the rear end of the airbag 5 is substantially the same height. The locking position is set.

In the above structure, when the vehicle side collision or the like is detected to have occurred by the collision detection sensor, gas generated by the inflator 1 is activated is within the airbag 5 through the gas supply pipe 6 Supplied. As a result, the airbag 5 housed and arranged along the roof side rail 3 bulges downward, and as shown in FIG. 7, it is expanded and deployed so as to cover the side wall surface of the passenger compartment in a curtain shape.

  That is, when the airbag 5 disposed along the roof side rail 3 is inflated, the airbag 5 is guided by the guide portion 18 of the guide member 16 and above the upper end portion of the center pillar trim 14. The side surface 7a of the roof trim 7 abuts against the vehicle outer wall surface, and the side 7a of the roof trim 7 is pressed inward of the vehicle body. As a result, as shown in FIG. 8, the overlapping portion between the side end portion of the roof trim 7 and the upper end portion of the center pillar trim 14 is separated, and the airbag 5 bulges outward from the separated portion. Become.

  Further, when the rear portion 5 a of the airbag 5 disposed along the rear side portion of the rear pillar 4 is inflated, the rear portion 5 a of the airbag 5 is guided by the guide member 12 and the extended portion 7 b of the roof trim 7. The extended portion 7b is pressed toward the inner side of the vehicle body. As a result, as shown in FIG. 9, the overlapping portion between the front edge of the extending portion 7b and the rear edge of the upper portion 8a of the rear pillar trim 8 is separated, and the airbag 5 is moved outward from the separated portion. The rear part 5a swells.

  In the deployed state of the airbag 5, the front end portion thereof is fixed to the substantially intermediate portion in the vertical direction of the front pillar 2 by the fixing member 26. In the illustrated example, the bulging portion of the airbag 5 includes a front portion 5b covering a range including the installation portion of the center pillar 10 from the front pillar 2, and a rear portion 5a covering a range including the installation portion of the rear pillar 4. The front portion 5b and the rear portion 5a of the airbag 5 are connected by a sheet-like connecting portion 5c. Instead of this configuration, the entire airbag 5 is inflated. May be.

Then, 5 as shown in, the airbag 5 stores disposed along the roof side rail 3, and the roof trim 7 and a center pillar trim 1 4 covering the vehicle interior side wall surface of the roof side rail 3 and the center pillar 10 In the vehicle occupant protection device provided with the above, the airbag covers the side wall surface of the passenger compartment in a curtain shape with the front end fixed to the front pillar 2 and the rear end fixed to the rear pillar 4. The center pillar trim 14 is formed so that the upper part thereof is inclined to the outside of the lower oblique vehicle as viewed from the front and rear direction, and the center pillar trim 14 has a belt anchor that supports the upper end portion of the seat belt 21. An anchor cover 22 that covers the installation portion of the airbag 5 is installed, and the upper end of the anchor cover 22 is prevented from inflating the airbag 5. In order to suppress this, the inclined surface 22a that is inclined so that the inner side of the vehicle compartment is located below the surface perpendicular to the vehicle interior side wall surface of the upper center pillar trim, as seen from the front-rear direction, Since the anchor cover 22 is formed over the entire upper end portion, it is possible to prevent the inflation of the airbag 5 from being hindered by the anchor cover 22. Therefore, the upper portion of the center pillar trim 1 4, despite providing the anchor cover 22, there is an advantage that the air bag 5 side collision of the vehicle can be smoothly extended deployment.

  And the side edge part of the said roof trim 7 and the upper end part of the center pillar trim 14 are arrange | positioned in the state which mutually overlap | superposed, and the said airbag 5 is attached to the wall surface of the roof side rail 3 facing this overlapping part. A guide member 16 for guiding is provided, and the side direction of the roof trim 7 at a position above the upper end of the center pillar trim 14 and on the vehicle interior side with respect to the guide direction of the airbag 5 by the guide member 16 is provided. Since it is set toward the vehicle outer wall surface 7a, the interference between the airbag 5 and the center pillar trim 14 is prevented, and the occurrence of a situation in which the airbag 5 enters between the center pillar trim 14 and the center pillar 10 is ensured. Can be prevented.

  That is, when the inflator 1 is actuated at the time of a side collision of the vehicle or the like, the airbag 5 stored and arranged along the roof side rail 3 is expanded and deployed by the guide member 16. The airbag 5 is guided and expanded above the upper end portion of the center pillar trim 14 and toward the vehicle outer wall surface of the side portion 7 a of the roof trim 7, so that the airbag 5 contacts the upper end portion of the center pillar trim 14. It is prevented. Therefore, a situation in which the airbag 5 enters between the center pillar trim 14 and the center pillar 10 due to the restriction of the expansion of the airbag 5 into the vehicle interior by the upper end portion of the center pillar trim 14. It is possible to effectively prevent the passenger's head and the like by effectively and smoothly expanding and deploying the airbag 5 along the vehicle interior side wall surface of the center pillar trim 14.

  In the above embodiment, the side end of the roof trim 7 and the upper end of the center pillar trim 14 are brought into line contact with each other so that the side end of the roof trim 7 and the upper end of the center pillar trim 14 are overlapped with each other. Therefore, compared to the case where these are in surface contact with each other, the side end of the roof trim 7 and the center pillar trim 14 are in accordance with the pressing force of the airbag 5 that is expanded and deployed at the time of a side collision of the vehicle. There is an advantage that the resistance force at the time of separating the overlapping portion from the upper end portion can be reduced, whereby the airbag 5 can be smoothly inflated from the overlapping portion into the vehicle interior.

  Further, as shown in the above embodiment, a curved portion 7d that curves toward the vehicle outer side is provided at the side end portion of the roof trim 7, and the upper end portion of the center pillar trim 14 is provided on the side wall surface of the interior of the curved portion 7d. When configured to contact, when the side portion 7a of the roof trim 7 is deformed to the vehicle interior side according to the pressing force of the airbag 5 that is expanded and deployed at the time of a side collision of the vehicle, the curve is Since the overlapping portion between the side end portion of the roof trim 7 and the upper end portion of the center pillar trim 14 is easily separated by the portion 7d serving as a guide surface, the airbag 5 is smoothly inflated from the separated portion into the vehicle interior. be able to.

  In the above embodiment, the guide member 16 is provided with the guide portion 18 constituting the guide surface of the airbag 5 and the folded portion 19 extending from the tip portion toward the vehicle exterior side. The excessive deformation of the guide portion 18 due to the pressing force of the airbag 5 is restricted by the folded portion 19. Therefore, the guide function of the airbag 5 by the guide portion 18 of the guide member 16 is effectively ensured with a simple configuration, and the airbag 5 is moved from the upper end portion of the center pillar trim 14 at the time of a side collision of the vehicle. Can be expanded and deployed reliably toward the vehicle outer wall surface of the side portion 7a of the roof trim 7.

  In particular, as shown in the embodiment (see FIG. 4), the tip end portion of the folded portion 19 provided in the guide member 16 is separated from the vehicle interior side wall surface of the roof side rail 3 by a predetermined distance S. According to the present invention, the turn-up portion 19 is located on the vehicle interior side of the roof side rail 3 in accordance with the pressing force acting when the head of the occupant abuts against the side portion 7a of the roof trim 7 at the time of a side collision of the vehicle. Since the guide portion 18 of the guide member 16 can be easily deformed until it comes into contact with the wall surface, it is possible to effectively prevent the occupant's head and the like from receiving an impact. Then, after the time when the tip of the folded portion 19 comes into contact with the vehicle interior side wall surface of the roof side rail 3 according to the deformation of the guide portion 18, both the folded portion 19 and the guide portion 18 are deformed. Therefore, there is an advantage that the impact energy absorbing function is sufficiently exhibited.

  In addition, when the occupant's head or the like comes into contact with the side portion 7a of the roof trim 7, the impact force acting on the occupant's head or the like can be easily deformed by easily deforming the guide portion 18 of the guide member 16. In order to further effectively relax, as shown in FIG. 10, it is desirable to have a structure in which the guide portion 18 is provided with a notch 24 made of a long hole or the like. Has an advantage that the weight of the guide member 16 can be reduced.

  In the above-described embodiment, the example in which the entire mounting substrate 17 of the guide member 16 is fixed to the side wall surface of the roof side rail 3 is described. However, as shown in FIG. The fixing part 17a fixed to the wall surface and the separating part 17b spaced from the vehicle interior side wall surface may be provided on the mounting substrate 17, and the folded part 19 may be provided at the tip of the separating part 17b.

According to the above configuration, when the occupant's head or the like comes into contact with the side portion 7 a of the roof trim 7, the mounting substrate 17 is mainly deformed according to the load input to the installation portion of the guide member 16. and, spacing portion 17b of the mounting substrate 1 7 from abutting point to the vehicle interior side wall surface of the roof side rail 3, so that the guide portion 18 is mainly deformed. Further, after the time when the tip of the folded portion 19 abuts against the vehicle interior side wall surface of the roof side rail 3, both the folded portion 19 and the guide portion 18 are deformed, and the effect of absorbing impact energy is stepwise. Therefore, the impact energy absorbing effect can be sufficiently obtained while effectively mitigating the impact force acting on the occupant's head and the like.

  The side end portion of the roof trim 7 and the upper end portion of the center pillar trim 14 are arranged in a superposed state, and the guide member 16 is provided at a position corresponding to the upper portion of the superposed portion. Instead of the embodiment, in a vehicle in which a plurality of intermediate pillars disposed between the front pillar 2 and the rear pillar 4 are disposed, a pillar trim that covers a wall surface on the vehicle interior side of the intermediate pillar, and the roof trim 7 It is good also as a structure which provided the said guide member 16 in the position corresponding to the upper direction of this superposition | polymerization part while arrange | positioning in the state which mutually overlap | superposed the side edge part. Further, the front pillar trim 24 or the rear pillar trim 8 and the side end portion of the roof trim 7 are disposed so as to overlap each other, and the guide member 16 is provided at a position corresponding to the upper portion of the overlapping portion. It is good also as a structure.

As described above, the rear portion 5a of the airbag 5 is stored and disposed along the rear side portion of the rear pillar 4, and the extending portion 7b extending downward along the rear side portion of the rear pillar 4 is provided on the roof trim 7. is provided on the rear end portion, and disposed to the edge in a state of being polymerized with one another after the upper portion 8 a of the front edge and the rear pillar trim 8 extending portion 7b of the roof trim 7, during expansion and deployment of the airbag 5 Since the airbag 5 is inflated from the overlapping portion of the extended portion 7b of the roof trim 7 and the upper portion 8a of the rear pillar trim 8 to the vehicle interior side, the roof side The airbag 5 housed and disposed along the rail 3 is expanded and deployed downward, and the rear portion 5a of the airbag 5 housed and disposed along the rear side of the rear pillar 4 is connected to the extended portion of the roof trim 7. 7b The front edge (flange portion 7c) and the rear edge of the upper portion 8a of the rear pillar trim 8 can be bulged toward the front side of the vehicle body.

  Therefore, the side wall surface of the vehicle interior including the rear side portion of the rear pillar 4 can be covered over the wide range by the airbag 5 at the time of a side collision of the vehicle, and the occupant is urged to the side. When the head is pressed toward the installation portion of the rear pillar 4, the occupant can be effectively protected by the airbag 5. Moreover, since the rear portion 5a of the airbag 5 is retracted and disposed along the rear side portion of the rear pillar 4 as described above, the airbag 5 can be locked by locking the rear portion 5a of the airbag 5 to the side wall surface of the rear pillar 4. Since the deployed state can be stably maintained, the supporting force for the head of the occupant pressed against the airbag as in the case where only the upper side of the airbag is supported and suspended from the roof side rail 3 is supported. There is an advantage that the head of the occupant can be stably supported without causing a problem such as lack of.

  In particular, in the above embodiment, the rear end portion of the airbag 5 is fixed to the wall surface of the rear pillar 4 located near the lower end portion of the extending portion 7b provided at the rear end portion of the roof trim 7 by the fixing bolt 11 or the like. Since the vehicle is fixed, the rear end of the airbag 5 is fixed to the wall surface (inner panel 4a) of the rear pillar 4 on the lower side of the vehicle body, so that the airbag 5 is stably deployed. When the occupant's head is pressed against the rear portion 5a of the airbag 5, the supporting force against the pressing force can be sufficiently secured.

  Further, as shown in the above embodiment, a fixing member 26 for fixing the front end portion of the airbag 5 to the front pillar 2 is provided, and the fixing position of the front end portion of the airbag 5 with respect to the front pillar 2 of the fixing member 26, that is, The position of the front end portion of the fixing member 26 locked by the locking tool 25 is set to the fixing position of the rear end portion of the airbag 5 with respect to the rear pillar 4, that is, the rear portion 5a of the airbag 5 is fixed by the fixing bolt 11 or the like. When the positions are set to substantially the same height, the front end and the rear end of the airbag 5 are fixed to the wall surfaces of the front pillar 2 and the rear pillar 4 on the lower side of the vehicle body, respectively, at the time of a side collision of the vehicle. In this state, it can be expanded and deployed along the side wall surface of the passenger compartment. Therefore, there is an advantage that the supporting force against the pressing force can be further increased when the head of the occupant is pressed against the rear portion 5a of the airbag 5.

DESCRIPTION OF SYMBOLS 1 Inflator 3 Roof side rail 4 Rear pillar 5 Air bag 7 Roof trim 10 Center pillar 14 Center pillar trim 16 Guide member 21 Seat belt 22 Anchor cover 22a Inclined surface

Claims (7)

Are retractable arranged supported along the roof side rail, and at the side collision of the vehicle, covering an airbag expanding deployed along the side wall surface of the passenger compartment by the operation of the inflator, the vehicle interior side wall surface of the roof side rail A vehicle occupant protection device including a roof trim and a center pillar trim that covers a wall surface on the vehicle interior side of the center pillar. The airbag has a front end fixed to a front pillar and a rear end fixed to a rear pillar. in state, expand to cover the side wall surfaces of the cabin like a curtain, the above-described center pillar trim, anchor cover that covers the installation portion of the belt anchor for supporting the upper end portion of the seat belt is installed, the center pillar trim The upper end portion of the roof trimmed with the outer end portion in the vehicle width direction of the roof trim on the vehicle interior side near the center pillar upper portion. And a guide member for guiding the airbag below the retracted airbag in the vicinity of the center-pillar-side overlapping portion. The guide direction of the airbag by the guide member is determined by the center pillar trim. Is set toward the vehicle exterior wall surface of the roof trim at a position on the vehicle interior side above the upper end of the vehicle interior. A rear pillar trim that extends inward in the direction is provided , and a rear portion of the roof trim extends to the rear side of the rear pillar trim. The rear portion of the roof trim overlaps with an upper rear edge of the rear pillar trim. An extension portion having a front edge extending to the lower side of the vehicle body and a lower edge extending from the lower end to the rear side is integrally connected to the rear pillar. A notch portion corresponding to the front edge and the lower edge of the extension portion is formed in the upper portion of the trim, and the front edge of the notch portion formed in the upper portion of the rear pillar trim is extended to the upper portion of the trim. A superposed part is formed on the front edge of the part, and when the airbag is inflated and deployed, it is bulged from the superposed part of the extended part of the roof trim and the upper part of the rear pillar trim to the front side of the vehicle body. , upper Symbol occupant protection apparatus for a vehicle passenger compartment wall, characterized by being configured to cover by the air bag containing the rear edge of the rear pillar located in front of the front edge of the extending portion of the roof trim . 2. The vehicle occupant protection device according to claim 1, wherein an overlap portion is formed in which a lower edge of a notch portion formed in an upper portion of the rear pillar trim is overlapped with a lower edge of the extension portion, and the airbag is formed. inflated during deployment, the upper Symbol occupant protection device for a vehicle, characterized in that the polymerization unit is separated by configured to inflate the airbag downwardly from the lower edge of the extended portion of the.   2. The vehicle occupant protection device according to claim 1, wherein an upper portion of the anchor cover has an inner portion of a vehicle compartment with respect to a surface perpendicular to a vehicle interior side wall surface of the upper portion of the center pillar trim when viewed from the front-rear direction. An occupant protection device for a vehicle, wherein an inclined surface is formed so as to be positioned below.   2. The vehicle occupant protection device according to claim 1, wherein the inflator is installed in a rear pillar and configured to supply gas from a rear portion of an airbag.   2. The vehicle occupant protection device according to claim 1, wherein the front end portion of the airbag is fixed to the front pillar via a longitudinal fixing member. 2. The vehicle occupant protection device according to claim 1, wherein a flange portion that is in line contact with a rear edge of an upper portion of the rear pillar trim is formed at a front edge of the extending portion provided at a rear portion of the roof trim. An occupant protection device for a vehicle. 2. The vehicle occupant protection device according to claim 1, wherein a rear portion of the airbag is stored and disposed so as to extend downward of the vehicle body along a rear side portion of the rear pillar, and the inflator is disposed below the airbag. An occupant protection device for a vehicle.

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