JP4887696B2 - Head protection airbag device - Google Patents

Description

  The present invention relates to a head protection airbag device including an airbag capable of inflating and inflating downward from an upper edge side of a window (side window) of a vehicle to expand and inflate downward to protect an occupant's head. .

  Conventionally, in the head protection airbag device, the airbag is folded and stored on the upper edge side of the window inside the vehicle including the upper portion of the pillar portion so as to be covered with the airbag cover, and the inflation gas At the time of inflow, the air bag cover is pushed open from the upper edge side of the window so as to cover the inside of the vehicle between the pillar portion and the window, and the airbag is deployed and inflated downward. And, in the conventional head protection airbag device, the airbag that deploys and inflates enters the outside of the pillar garnish that covers the inside of the pillar portion so that smooth deployment and inflation to the inside of the vehicle is not hindered. A jump base has been used (see, for example, Patent Document 1).

This jumping base is disposed above the outside of the pillar garnish, and allows the airbag to be deployed and inflated to slide on the inclined guide surface on the upper side of the jumping base at a position above the upper end of the pillar garnish. I was guiding inside the car.
Japanese Patent Application Laid-Open No. 11-91490

  However, since the conventional jump stand is composed of a rigid member so as to regulate the deployment direction when the airbag is deployed and inflated, it uses a metal such as a sheet metal to increase the weight. Even if it is made of synthetic resin so as to reduce the weight, it is bulky by providing reinforcing ribs.

  The present invention solves the above-described problems, and suppresses an increase in weight and storage space as much as possible, and allows head airbags to be deployed and inflated smoothly from the vicinity of the upper end of the pillar garnish to the inside of the vehicle. An object is to provide a bag device.

The head protection airbag device according to the present invention is folded and housed on the upper edge side of the window inside the vehicle, and when the inflation gas flows in, the airbag cover is pushed open to cover the window. An inflatable airbag,
The airbag is in the upper side region of the rear pillar portion of the vehicle, while pushing open the airbag cover, the upper end of the pillar garnish for covering the interior side of the rear pillar portion, climbs over the vehicle exterior, the interior side A head protection airbag device configured to be housed so as to be expanded and inflated downward,
The airbag is
A gas inflow portion that inflates so as to separate the inner wall portion and the outer wall portion of the vehicle by flowing in the inflation gas;
A non-inflow portion that is formed as a combination of the vehicle inner wall portion and the vehicle outer wall portion and does not allow the inflating gas to flow; and
Configured with
The gas inflow part is
A gas supply path portion arranged linearly along the front-rear direction on the upper edge side of the airbag;
A connection port portion that extends upward from a substantially intermediate portion in the front-rear direction of the gas supply passage portion and is connected to an inflator for supplying the inflation gas to the airbag;
A front protective inflatable portion disposed below the front side of the gas supply path and capable of covering a front seat side window; and a rear seat disposed below the rear of the gas supply path. A protective inflating portion as a shielding main body having a rear protective inflating portion capable of covering the vehicle interior of the rear pillar portion from a side window;
An upper edge side bag portion that is divided from the rear protective inflating portion by the partition portion of the non-inflow portion, and is disposed above the rear protective inflating portion;
Configured with
The post-protective inflating part is
A cell through which an inflating gas flows from the rear end of the gas supply path section through an inflow port disposed near the front end of the partition section;
As a configuration in which an expansion gas is allowed to flow from the cell to expand, a pillar shielding portion that is disposed below the upper edge bag portion and can cover the inside of the pillar garnish,
Configured with
The upper edge bag portion is
After the gas supply path portion, the inner diameter dimension is smaller than the inner diameter dimension when the gas supply path section is completely inflated, so that the upstream side portion of the inflation gas flowing into the airbag from the pillar shielding section is formed. It extends in a rod shape from the end to the rear, and is configured to inflate by inflating gas from an inflow port at the rear end of the gas supply path,
With the upper end of the pillar garnish not projecting to the inside of the vehicle, the shape at the time of completion of the expansion is made such that the lower end of the upper edge side bag portion projects to the inner side of the upper end of the pillar garnish, while the upper end of the pillar garnish and the vehicle It is set as a shape that closes between the body side,
Further, the folded pillar shielding part is wrapped around the folded pillar shielding part on the vehicle outer side of the folded pillar shielding part so that the folded pillar shielding part can be pushed out to the inside of the vehicle at the time of expansion and expansion. It is characterized by.

  In the head protection airbag device according to the present invention, when the inflation gas flows into the airbag folded and stored on the upper edge side of the window, the airbag covers the vehicle interior side of the window. In this way, the airbag cover is pushed open and expanded and inflated downward from the upper edge side of the window.

  At that time, on the upper side of the pillar part, the upper edge side bag part arranged on the upstream side of the inflation gas expands more quickly than the pillar shielding part of the shielding main body part located on the downstream side of the inflation gas. And, the upper edge side bag portion pushes the folded pillar shielding portion to the vehicle inner side while closing the space between the upper end of the pillar garnish and the vehicle body side while the vehicle outer side is supported on the body side. The pillar shielding portion of the shielding main body portion can smoothly protrude toward the inside of the vehicle without covering between the upper end of the pillar garnish and the vehicle body side, thereby covering the inside of the pillar garnish.

  And the member which prevents the interference of the airbag with the upper end of the pillar garnish is constituted by the upper edge side bag portion which is integrated into the airbag itself and which is inflated by using an inflation gas for inflating the airbag. In addition, it can be formed from a flexible cloth material similar to that of the shielding main body, and can be reduced in weight, and can be folded together and stored compactly.

  Therefore, in the head protection airbag device according to the present invention, an increase in weight and storage space can be suppressed as much as possible, and the airbag can be smoothly deployed and inflated from the vicinity of the upper end of the pillar garnish to the inside of the vehicle.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a head protection airbag device M1 according to a first embodiment includes an airbag 19, an inflator 13, a mounting bracket 10 · 14 and an airbag cover 8. The airbag 19 extends from the lower edge side of the front pillar portion FP to the upper side of the rear pillar portion RP from the lower edge side of the front pillar portion FP on the upper edge side of the side windows W1 and W2 inside the vehicle V. It is folded and stored in the range.

  As shown in FIG. 1, the inflator 13 is a substantially cylindrical cylinder type, and is provided with a connection port portion 22 for allowing the inflation gas in the airbag 19 to flow in. It is connected with. The inflator 13 is attached and fixed to the inner panel 2 of the roof side rail portion RR near the upper portion of the center pillar portion CP by being covered with the lower edge 5a of the roof head lining 5 using the mounting bracket 14. Yes. The inner panel 2 is a member on the body (vehicle body) 1 side of the vehicle V. The mounting bracket 14 is made of sheet metal, holds the inflator 13, and is fixed to the inner panel 2 using mounting bolts 15.

  Each mounting bracket 10 fixes and fixes each mounting portion 30 of the airbag 19 to the inner panel 2 by mounting bolts 11 (see FIG. 5). Each mounting bolt 11 is fastened to a mounting hole 2a formed in the inner panel 2 by providing a nut 2b.

  The airbag cover 8 is configured from the lower edges 4a and 5a of the pillar garnish 4 disposed in the front pillar portion FP and the roof head lining 5 disposed in the roof side rail portion RR. The front pillar garnish 4 and the roof head lining 5 are made of synthetic resin, and are fixedly attached to the inner side of the inner panel 2 of the body 1 at the front pillar portion FP and the roof side rail portion RR, respectively. . Further, the roof head lining 5 is disposed from the vicinity above the front pillar portion FP to the vicinity above the rear pillar portion RP via the center pillar portion CP.

  As shown in FIGS. 1 to 4, the air bag 19 flows in the inflation gas G from the inflator 13 and expands from the folded state, and the pillars of the side windows W <b> 1 and W <b> 2, the center pillar part CP, and the rear pillar part RP. It expands and expands so as to cover the inner side I of the garnish 7. The airbag 19 includes an airbag main body 20 having a shielding main body 35 that covers the vehicle interior I of the pillar garnishes 7 and 6 of the side windows W1 and W2, the center pillar portion CP, and the rear pillar portion RP, and the airbag main body 20 And the upper edge side bag portion 39 (39A, 39B) for facilitating the development at the pillar portions CP and RP. The upper edge side bag portion 39A is arranged near the upper side of the center pillar portion CP, and the upper edge side bag portion 39B is arranged near the upper side of the rear pillar portion RP.

  The airbag main body 20 includes a gas inflow portion 21 that inflates so that the inflation gas G flows in and separates the vehicle interior side wall portion 20a and the vehicle exterior wall portion 20b, and a non-inflow portion 28 that does not allow the inflation gas G to flow in. It is prepared for. As shown in FIGS. 3 and 4, the airbag main body 20 and the upper edge side bag portion 39 (39A and 39B) are respectively a wall portion 20a and 41 on the vehicle inner side I made of a woven fabric such as polyamide or polyester. The sewn type is formed by stitching the wall portions 20b and 42 of the vehicle exterior O. Further, the upper edge side bag portion 39B disposed near the upper portion of the rear pillar portion RP has a longer longitudinal dimension than the upper edge side bag portion 39A disposed near the upper portion of the center pillar portion CP. The structure is the same as that of the upper edge side bag portion 39A only in that the points are different.

  And the non-inflow part 28 of the airbag main body 20 is comprised from the peripheral part 29, the attaching part 30, the partition parts 31 and 32, and the plate-shaped part 33. FIG. The peripheral edge portion 29 is formed so as to surround the gas inflow portion 21 by connecting the inner wall portion 20a and the outer wall portion 20b to each other (sewing in the embodiment).

  A plurality of attachment portions 30 (six in the embodiment) are formed so as to protrude upward from the peripheral edge portion 29 on the upper edge 19 a side of the airbag 19. Each mounting portion 30 is formed with a mounting hole 30a through which the bolt 11 is inserted. As described above, the mounting bracket 10 for mounting to the inner panel 2 is fixed to each mounting portion 30, and the mounting bolts 11 inserted through the mounting holes 30a are screwed into the nut 2b. Thus, it is fixed to the inner panel 2 (see FIG. 6).

  The plate-like portion 33 is arranged in a rectangular plate shape below the gas supply passage portion 23 between the front and rear protective inflating portions 25 and 26 so as to extend upward from the lower edge 19b side of the airbag 19. Yes. The plate-like portion 33 is disposed in order to secure the overall shape of the airbag 19 and reduce the volume of the gas inflow portion 21 to shorten the time until completion of the inflation.

  The partition parts 31 and 32 constitute a part of the peripheral part 29, and are arranged so as to enter into the regions of the front and rear protective expansion parts 25 and 26, respectively. 29 is formed so as to enter the protective inflating portions 25 and 26 from the lower edge side, and the partition portion 32 is formed so as to extend forward and downward from the upper front end of the plate-like portion 33. When the expansion of the front and rear protective expansion sections 25 and 26 is completed, the partition sections 31 and 32 are connected to the front and rear small cells 25a, 25b, 25c, 25d, 26a, and the like. The protective expansion portions 25 and 26 are arranged to restrict the thickness of the protective expansion portions 25 and 26 so that the protective expansion portions 25 and 26 can be expanded in a substantially plate shape instead of being spherical.

  The cells 25a, 25b, 25c, 25d, 26a, and 26b partitioned by the partitioning portions 31 and 32 are shortened in the front-rear direction of the airbag 19 at the time of inflation, and the airbag 19 at the time of completion of inflation. It also serves to generate a longitudinal tension on the lower edge 19b side.

  Further, the non-inflow portion 28 includes a vehicle interior side wall portion 20a and a vehicle exterior wall portion 20b together with a peripheral edge portion 29 and partition portions 31 and 32 that join the vehicle interior side wall portion 20a and the vehicle exterior wall portion 20b of the airbag body 20. It is configured as two stacked layers.

  In the embodiment, the gas inflow portion 21 includes a connection port portion 22, a gas supply path portion 23, and a protective expansion portion 24. The gas supply path 23 is arranged in a straight line along the front-rear direction of the vehicle V on the upper edge 19 a side of the airbag 19. A connecting port portion 22 that extends upward and allows the inflation gas G from the inflator 13 to flow into the gas inflow portion 21 is formed at a substantially intermediate portion in the front-rear direction of the gas supply passage portion 23. The gas supply path portion 23 allows the inflation gas G from the connection port portion 22 to flow to both sides in the front-rear direction of the vehicle V, that is, to the upper side of the cell 25a on the front side and to the upper side of the cell 26b on the rear side. In the airbag main body 20, an upstream side portion of the inflating gas G that is inflated first is configured.

  In addition, when the gas supply passage portion 23 is completely inflated in a vehicle-mounted state, the upper portion 23a side is covered with the airbag cover 8, and the lower portion 23b side protrudes slightly downward from the airbag cover 8. It is configured (see FIG. 6).

  The protective inflating portion 24 of the gas inflow portion 21 of the airbag main body 20 constitutes a shielding main body portion 35 that covers the side windows W1 and W2 and the inner side I of the pillar garnish 7 and 6 of the center pillar portion CP and the rear pillar portion RP. Thus, an area for protecting the head of an occupant seated on the seat of the vehicle V is provided, and the front protective inflating portion 25 and the rear protective inflating portion 26 are configured to be divided forward and backward by the plate-like portion 33. Yes. The front protective inflating portion 25 is disposed below the front portion of the gas supply passage 23, and is disposed on the side of the front seat of the vehicle V when the airbag 19 is deployed and inflated. It will expand so as to cover the side window W1. The rear protective inflating section 26 is disposed below the rear side of the gas supply passage section 23, and is disposed on the side of the rear seat of the vehicle V when the airbag 19 is deployed and inflated. Will be covered. Each of the protective inflating portions 25 and 26 is partitioned by the partitioning portions 31 and 32 that regulate the thickness as described above when the expansion is completed, and a plurality of cells 25a that are arranged in parallel in the front-rear direction of the vehicle V. It is configured to inflate 25b, 25c, 25d, 26a and 26b.

  When the airbag 19 is completely deployed and inflated, the pillar shielding portion 36 that covers the inside I of the pillar garnish 7 of the center pillar portion CP in the shielding main body portion 35 is a gas supply path portion 23 partitioned by the partitioning portion 32. The pillar shielding portion 37 that covers the vehicle interior I of the pillar garnish 6 of the rear pillar portion RP is in the vicinity of the cell 26 b below the gas supply path portion 23.

  And the upper edge side bag part 39 (39A * 39B) is arrange | positioned at the vehicle outer side O of the gas supply path part 23 above the pillar shielding parts 36 * 37 at the time of completion | finish of inflation of the airbag 19. As shown in FIG. Further, the upper edge side bag portions 39A and 39B are arranged with gas inlets 40 (40A and 40B) on the upper side 23a of the gas supply passage 23 which is an upstream portion of the inflation gas G, so that the gas supply passage The expansion gas G is made to flow from the portion 23, and is arranged at the upstream side portion of the expansion gas G flowing into the airbag 19 from the lower pillar shielding portions 36 and 37, respectively. . On the gas supply path 23 side, outlets 21a and 21b are opened in the vehicle outer wall 20b so as to correspond to the inlets 40 (40A and 40B). The inflow port 40A is that of the upper edge side bag portion 39A on the center pillar portion CP side, and the inflow port 40B is that of the upper edge side bag portion 39A on the rear pillar portion RP side.

  The shape of the upper edge side bag portions 39A and 39B upon completion of the expansion is such that the pillar shielding portions 36 and 37 of the shielding main body portion 35 when deployed and inflated are the upper ends 7a and 6a of the pillar garnishes 7 and 6 and the body 1 side. The length dimension in the front-rear direction and the vertical direction and the thickness dimension in the vehicle interior / exterior direction are set so as to block the space between the pillar garnish upper ends 7a, 6a and the body 1 side. Has been. In the case of the embodiment, the lower end 39b of the upper edge side bag portion 39 (39A, 39B) protrudes to the vehicle outer side O below the upper ends 7a, 6a of the garnish 7, 6 so as to come into contact with the inner panel 2 when the inflation is completed. The upper surface 7a of the bag portion 39 is in contact with the upper surface 7a of the bag portion 39 by contacting the upper surface of the rib 45 disposed on the inner surface 2 and closing the space between the outer side O of the upper ends 7a and 6a and the inner panel 2. A region extending from the vicinity to the vicinity of the upper portion of the lower end 39b of the bag portion 39 is set so as to extend upward from the garnish upper ends 7a and 6a from the vehicle outer side O to the vehicle inner side I as an obliquely downward direction of the vehicle inner side I. And, of course, when the upper edge side bag portion 39 is inflated, the upper ends 7a and 6a are strongly pressed toward the vehicle inner side I so that the upper ends 7a and 6a of the garnishes 7 and 6 do not protrude toward the vehicle inner side I. ing.

  The airbag 19 is manufactured by cutting the inner wall portion 20a and the outer wall portion 20b of the airbag body 20 into a predetermined shape, and forming outlets 21a and 21b at predetermined positions on the outer wall portion 20b. In the upper edge side bag portions 39A and 39B, the vehicle interior side wall portion 41 and the vehicle exterior wall portion 42 are cut into a predetermined shape, and the inlets 40A and 40B are formed at predetermined positions on the vehicle interior side wall portion 41.

  First, the periphery of the inflow ports 40A and 40B of the inner side wall portion 41 of the upper edge side bag portions 39A and 39B is stitched to the periphery of the outflow ports 21a and 21b of the outer side wall portion 20b of the airbag main body 20, respectively. Next, the vehicle interior side wall portion 20 a is overlapped with the vehicle interior side I of the vehicle exterior wall portion 20 b of the airbag body 20 and stitched together to form the peripheral edge portion 29, thereby forming the airbag body 20. Thereafter, the vehicle outer side wall portion 42 is overlapped on the vehicle outer side O of the vehicle inner side wall portion 41 of each of the upper edge side bag portions 39A and 39B, the outer peripheral edges of the wall portions 41 and 42 are sewn together, and the upper edge side bag portion 39A. If 39B is formed, the airbag 19 can be manufactured. In addition, you may apply | coat the coating agent for gas leak prevention to the surface which contacts the gas G for expansion | swelling of wall part 20a * 20b * 41 * 42.

  The airbag 19 manufactured in this way is folded with a fold along the substantially front-rear direction so that the lower edge 19b side approaches the upper edge 19a side, and is folded when the airbag 19 is deployed and inflated. The shielding portions 36 and 37 are folded so that the upper edge side bag portions 39A and 39B are arranged on the vehicle outer side O of the folded pillar shielding portions 36 and 37 so that the shielding portions 36 and 37 can be pushed out to the vehicle inner side I. In the case of the embodiment, as shown in FIG. 5, the roll is wound so that the lower edge 19 b faces the vehicle outer side O, and the gas supply path section is wound in the vicinity of the gas supply path section 23 in the opposite winding direction. 23 is wrapped around the outer side O of the roll folding portion 47 on the lower edge 19b side, and the upper edge side bag portion 39 (39A, 39B) is wrapped around the pillar shielding portion so as to wrap around the winding portion 49 of the airbag body 20. The airbag 19 is disposed on the vehicle outer side O of the winding portion 49 including 36 and 37, and the folding of the airbag 19 is completed. When the folding is completed, the airbag 19 is wound with a wrapping material (not shown) that can be broken to prevent it from collapsing.

  Then, the inflator 13 to which the mounting bracket 14 has been attached is connected to the connection port portion 22 of the airbag 19 using the clamp 16, and the mounting bracket 10 is attached to each mounting portion 30 of the airbag 19, An airbag assembly can be formed.

  Thereafter, the brackets 10 and 14 are arranged at predetermined positions of the inner panel 2 on the body 1 side, and the bolts 11 and 15 are fixed by inserting the mounting holes 30a, and the brackets 10 and 14 are fixed to the inner panel 2. And fix the airbag assembly to the body 1. Next, lead wires (not shown) extending from a predetermined control device for inflator operation are connected to the inflator 13, the front pillar garnish 4 and the roof head lining 5 are attached to the body 1, and the rear pillar garnish 6 and the center pillar garnish 7 are further attached. If attached to the body 1, the airbag device M1 can be mounted on the vehicle V.

  If the inflator 13 is actuated after the airbag device M1 is mounted on the vehicle V, the inflation gas G from the inflator 13 passes through the connection port 22 in the airbag 19 as shown by the two-dot chain line in FIG. Since the gas flows into the gas supply passage 23, flows in the gas supply passage 23 toward the both sides in the front-rear direction, and further flows into the protective inflation portions 25 and 26 before and after the airbag 19, 26 begins to expand while releasing the fold. The airbag 19 breaks the wrapped wrapping material (not shown), pushes the airbag cover 8 on the lower edges 4a and 5a side of the front pillar garnish 4 and the roof head lining 5, and projects downward. On the other hand, as shown by a two-dot chain line in FIG. 1, the side window W1, W2, the center pillar portion CP, and the rear pillar portion RP are greatly expanded and inflated so as to cover the inside I of the vehicle.

  At that time, on the upper side of the pillar portions CP and RP, as shown in FIGS. 6A and 6B, the upper edge side bag portion 39 (39A and 39B) disposed in communication with the gas supply passage portion 23 of the inflation gas G is provided. ) From the pillar shielding portions 36 and 37 of the shielding main body 35 on the downstream side of the inflation gas G by the inflation gas G flowing in through the outlets 21a and 21b and the inlet 40 (40A and 40B). Swell quickly. The upper edge side bag portions 39A and 39B close the space between the upper ends 7a and 6a of the pillar garnishes 7 and 6 and the inner panel 2 on the body 1 side of the vehicle V, while the outer side of the inner panel 2 on the body 1 side is closed. As a supported state, the folded pillar shielding portions 36 and 37 are pushed out to the vehicle inner side I of the pillar garnish 7. Therefore, the pillar shielding portions 36 and 37 that cover the inside I of the pillar garnish 7 and 6 in the shielding main body portion 35 are connected to the upper ends 7a and 6a of the pillar garnish 7 and 6 and the body 1 as shown in FIGS. Without intruding into the inner panel 2 on the side, the inner side I of the pillar garnish 7 or 6 can be covered by smoothly projecting to the inner side I.

  A member for preventing the interference of the airbag 19 (shielding main body portion 35) with the upper ends 7a and 6a of the pillar garnishes 7 and 6 is integrated with the airbag 19 itself, and the airbag 19 is inflated. The upper edge side bag portion 39 that inflates using the gas G is formed from a cloth material having flexibility similar to that of the shielding main body portion 35, and can be reduced in weight and integrated. Can be folded into a compact storage.

  Therefore, in the head protection airbag device M1 of the first embodiment, the increase in weight and storage space is suppressed as much as possible, and the airbag 19 is smoothly moved from the vicinity of the upper ends 7a and 6a of the pillar garnishes 7 and 6 to the vehicle interior side. I can be expanded and inflated.

  In the first embodiment, the case where the upper edge side bag portions 39A and 39B are disposed at the two portions of the center pillar portion CP and the rear pillar portion RP is shown. A member that regulates the deployment direction of the airbag, such as a jumping table, may be disposed in the other pillar portion portion without providing the upper edge side bag portion.

  Further, the inflow of the inflation gas into the upper edge side bag portion is caused by the expansion of the upper edge side bag portion before the pillar shielding portion covering the inner side of the pillar garnish in the shielding main body portion below the upper edge side bag portion is deployed. Since it is only necessary to close the gap between the upper end of the garnish and the body side, if the point of time when the pillar shielding part of the shielding body part is deployed is behind the initial inflow of gas to the gas inflow part, gas supply You may arrange | position the inflow port of the gas for expansion | swelling to an upper edge side bag part in the downstream of a gas from a channel | path part. Conversely, if the time when the pillar shielding portion covering the inside of the pillar garnish in the shielding main body portion is substantially the same as the initial inflow of gas into the gas inflow portion, the vicinity of the connection portion with the inflator, for example, connection An inflating gas inlet to the upper edge bag portion is arranged near the mouth portion or the connection port portion, and the upper edge bag portion is arranged upstream of the inflating gas from the pillar shielding portion. Just do it.

  And the upper edge side bag part is a gap between the upper side of the garnish and the body side so that the pillar shielding part covering the inner side of the pillar garnish in the shielding main body part can be deployed inside the car without being caught by the upper end of the garnish when deployed. If the pillar shielding portion can be pushed out to the vehicle inner side while closing (a space where the airbag on the vehicle outer side of the garnish enters), it may not be arranged on the vehicle outer side of the gas supply path portion above the pillar shielding portion. For example, the upper edge side bag portion may be disposed above the pillar shielding portion of the shielding main body portion without providing an inflated portion such as a gas supply path portion on the inner side of the vehicle.

  In the head protection airbag device M2 of the second embodiment shown in FIGS. 7 to 12, a portion where the airbag 59 inflates above the pillar shielding portion 77 that covers the inside I of the pillar garnish 6 in the shielding main body portion 75. As shown, only the upper edge side bag portion 79 is arranged. In the second embodiment, the inflator 13, the mounting brackets 10 and 14, the mounting bolts 11 and 15, the clamp 16, and the airbag cover 8 are the same except that the airbag 59 is different from the first embodiment. Since the thing is used, explanation is omitted.

  Further, in the vehicle V in which the airbag apparatus M2 is mounted, as shown in FIG. 9, the center pillar garnish 7A that covers the vehicle inner side I of the center pillar portion CP is configured by providing a jump stand 7b at the upper end 7a. The jump base 7b is configured as a guide surface in which the upper surface 7c is inclined so that the edge side of the vehicle outer side O is positioned higher than the edge side of the vehicle inner side I, and the pillar garnish 7A of the shielding main body 75 of the airbag 59 is The covering head shield 76 (see FIGS. 7 and 10) is guided by the inclined guide surface 7c when the airbag 59 is deployed and inflated, and does not get caught by the upper end 7a of the garnish 7A. The lower edge 5a of the lining 5 is pushed open so as to protrude toward the vehicle interior side I.

Similarly to the airbag 19 of the first embodiment, the airbag 59 of the second embodiment also flows in the inflation gas G from the inflator 13 and deploys from the folded state as shown in FIGS. The side windows W1 and W2 and the center pillar portion CP and the rear pillar portion RP expand and expand so as to cover the inside I of the pillar garnish 7 and 6. The airbag 59 includes a shielding main body 75 that covers the vehicle interior I of the pillar garnishes 7 and 6 of the side windows W1 and W2, the center pillar portion CP, and the rear pillar portion RP, and the rear pillar portion RP of the shielding main body portion 75 that is deployed at the rear pillar portion RP. And an upper edge side bag portion 79 for smoothing. That is, since the jump stand 7b is disposed in the center pillar portion CP, the upper edge side bag portion 79 is disposed only near the upper portion of the rear pillar portion RP.

  The air bag 59 is formed such that the gas inflow portion 61 that inflates so that the inflating gas G flows in and separates the vehicle inner side wall portion 61a and the vehicle outer side wall portion 61b from the wall portions 61a and 61b. And a non-inflow portion 68 through which the expansion gas G does not flow. The airbag 59 is manufactured by bag weaving from yarn such as polyamide or polyester, and the upper edge bag portion 79 is manufactured integrally with the shielding main body 75 when weaving the bag.

  The airbag 59 has a plurality of non-inflow portions 68 extending upward from a peripheral portion 69 formed so as to surround the gas inflow portion 61 and a peripheral portion 69 on the upper edge 59a side of the airbag 59 (in the embodiment). 6) mounting portions 70, partitioning portions 71, 72, and 73, and a plate-like portion 74. Each mounting portion 70 includes a mounting hole 70a through which the bolt 11 is inserted, the mounting bracket 10 is fixed, and the mounting bolt 11 through which each mounting hole 70a is inserted is screwed into the nut 2b. It is fixed to the panel 2 (see FIGS. 8 and 9). Further, the plate-like portion 74 is formed in a rectangular plate shape, similarly to the plate-like portion 33 of the airbag 19 of the first embodiment, below the gas supply path portion 63 between the front and rear protective inflating portions 65 and 66, The airbag 59 is disposed so as to extend upward from the lower edge 59b side. Further, the partition portions 71 and 72 are also arranged in the same manner as the partition portions 31 and 32 of the airbag 19 of the first embodiment, and are extended from the peripheral portion 69 and the plate-like portion 74 so as to protect the front and rear. The partition portions 71 are formed so as to enter into the respective protective inflating portions 65 and 66 from the lower edge side of the peripheral portion 69, and are arranged so as to invade into the regions of the portions 65 and 66, respectively. The part 72 is formed so as to extend forward and downward from the upper front end of the plate-like part 74. These partition parts 71 and 72 partition each protective expansion part 65 and 66 into cells 65a, 65b, 65c, 65d, 66a, and 66b of small rooms that are arranged side by side.

  And the partition part 73 is arrange | positioned so that it may extend ahead from the rear edge of the peripheral part 69, and is partitioning so that the upper edge side bag part 79 and the rear protection expansion part 66 may be divided | segmented up and down. . Therefore, the rear protective expansion portion 66 has the vicinity of the front end of the partition portion 73 in the vicinity of the upper end of the cell 66a as an inflow port 66c through which the expansion gas G flows, from the rear end of the gas supply path portion 63 to the upper end of the cell 66a. The expansion gas G is caused to flow into the cell 66a and the cell 66b via the inflow port 66c located.

The gas inflow portion 61 of the airbag 59 includes a cylindrical connection port portion 62 connected to the inflator 13, a gas supply path portion 63, and a protective inflating portion 64 as a shielding main body portion 75. The upper edge side bag portion 79 and the child bag portion 78 are integrally disposed at the time of bag weaving. The gas supply path 63 is arranged in a straight line along the front-rear direction of the vehicle V on the upper edge 59 a side of the airbag 59. A connection port portion 62 that extends upward is projected from a substantially intermediate portion in the front-rear direction of the gas supply path portion 63.

  In the gas supply path portion 63 of the second embodiment, the rear end communicates with the upper edge side back portion 79, and the front end communicates with the child bag portion 78. The child bag portion 78 has a bar shape extending forwardly at an upper end of the cell 65a when the airbag 59 is completely inflated and having an inner diameter smaller than the inner diameter when the gas supply passage portion 63 is completely inflated. The child bag portion 78 is disposed so that, when inflated, the vicinity of the upper end 4b on the lower edge 4a side of the front pillar garnish 4 near the boundary portion with the roof head lining 5 can be smoothly opened.

  Similarly to the airbag 19 of the first embodiment, the protective inflating part 64 includes a front protective inflating part 65 and a rear protective inflating part 66, and the front protective inflating part 65 is arranged in front of the gas supply path part 63. The airbag 59 is disposed on the side of the front side of the vehicle V when the airbag 59 is inflated and inflated so as to cover the side window W1 on the side of the front seat. The rear side of the gas supply passage 23 is disposed on the lower side of the gas supply passage 23. When the airbag 59 is deployed and inflated, it is disposed on the side of the rear seat of the vehicle V and covers the side window W2 on the side of the rear seat. . Each of the protective inflating portions 65 and 66 is partitioned by the partitioning portions 71 and 72 that regulate the thickness and is arranged in parallel in the front-rear direction of the vehicle V, as described above, when the expansion is completed. -It is comprised so that 65b * 65c * 65d * 66a * 66b may be expanded.

When the airbag 59 is completely inflated and inflated , the pillar shielding portion 76 that covers the vehicle inner side I of the pillar garnish 7 of the center pillar portion CP of the protective inflating portion 64 as the shielding main body portion 75 is provided in the gas supply path portion 63. The pillar shielding portion 77 that is in the vicinity of the lower cells 65c and 65d and covers the inside I of the pillar garnish 6 of the rear pillar portion RP is in the vicinity of the cell 66b below the partition portion 73.

  The upper edge side bag portion 79 is disposed so as to extend rearward from the rear end of the gas supply path portion 63 in a rod shape with an inner diameter dimension smaller than the inner diameter dimension at the completion of expansion of the gas supply path portion 63, and The portion 73 is separated and disposed above the rear protective expansion portion 66. Since the upper edge side bag portion 79 is arranged so as to be continuous in the same axial direction as the axial direction of the gas supply path portion 63, the inflation is performed when the inflation gas G flows into the airbag 59. When the working gas G flows into the gas supply path 63 and flows backward, it enters from the inlet 80 and immediately expands. The expansion gas G flows into the cell 66b as the pillar shielding portion 77 below the upper edge side bag portion 79 from the front upper inlet 66c of the rear protective expansion portion 66, and flows into the cell 66b after passing through the cell 66a. Therefore, the inflation gas G flows after the inflow of the inflation gas G to the upper edge bag portion 79. That is, the upstream bag portion 79 is an upstream portion of the inflation gas G from the pillar shielding portion 77.

  The shape of the upper edge side bag portion 79 at the time of completion of expansion is such that the length dimension in the front-rear direction, the thickness dimension in the vehicle interior / exterior direction, and the vertical direction so as to block between the pillar garnish upper end 6a and the body 1 side. The length dimension (inner diameter dimension) is set. That is, when the inflation is completed, the lower end 79b of the upper edge side bag portion 79 protrudes toward the vehicle inner side I near the upper end 6a of the garnish 6, and closes the space between the vehicle outer side O of the upper end 6a and the inner panel 2. The shape of the bag portion 79 when the inflation is completed is set. And of course, when the upper edge side bag portion 79 is inflated, the upper end 6a is strongly pressed in the vehicle interior I direction so that the upper end 6a of the garnish 6 does not protrude toward the vehicle interior I.

  The airbag 59 is also folded with a fold along the substantially front-rear direction so that the lower edge 59b approaches the upper edge 59a, and is folded when the airbag 59 is inflated. 77 is folded so that the upper edge side bag portion 79 is disposed on the vehicle outer side O of the folded pillar shielding portion 77 so that the 77 can be pushed out to the vehicle inner side I. In the case of the embodiment, as shown in FIGS. 8 and 9, the roll is folded so that the lower edge 59 b faces the vehicle outer side O, and the opposite side is formed in the vicinity of the gas supply path portion 23 and the upper edge side bag portion 79. Winding in the winding direction, the gas supply path 23 and the upper edge side bag portion 79 are arranged and wound around the outer side O of the roll folding portion 87 on the lower edge 19b side, and the upper edge side bag portion 79 is wound around the pillar shielding portion. The airbag 59 is disposed on the vehicle outer side O of the roll folding portion 87 including 77 to complete the folding of the airbag 59.

  When the folding is completed, the airbag 59 is wound with a wrapping material (not shown) that can be broken, and then the inflator 13, the mounting brackets 10 and 14, and the clamp 16 are assembled as in the first embodiment. On the other hand, the airbag assembly M2 can be formed and the bolts 11 and 15 can be further stopped to mount the airbag device M2 on the vehicle V.

  If the inflator 13 is actuated after the airbag device M2 is mounted on the vehicle V, the inflation gas G from the inflator 13 flows from the connection port 62 in the airbag 59 as shown by the two-dot chain line in FIG. Since the gas flows into the gas supply path 63, flows in the gas supply path 63 toward the both sides in the front-rear direction, and further flows into the protective expansion sections 65, 66 before and after the airbag 59, each protective expansion section 65. 66 breaks the wrapped wrapping material (not shown), pushes open the airbag cover 8 on the lower edges 4a and 5a side of the front pillar garnish 4 and the roof head lining 5, and protrudes downward, as shown in FIG. As shown by the two-dot chain line, the side window W1, W2, the center pillar CP, and the rear pillar RP are greatly expanded and inflated so as to cover the inside I of the vehicle. To become.

  At that time, on the upper side of the rear pillar portion RP, as shown in FIGS. 12A and 12B, the upper edge side bag portion 79 is expanded by the expansion gas G flowing backward through the gas supply path portion 63. It expands more quickly than the pillar shielding part 77 of the shielding main body part 75 located on the downstream side. And the upper edge side bag part 79 is in a state where the outside of the vehicle is supported by the inner panel 2 on the body 1 side while closing the space between the upper end 6a of the pillar garnish 6 and the inner panel 2 on the body 1 side of the vehicle V. The folded pillar shielding part 77 is pushed out to the vehicle inner side I of the pillar garnish 6. Therefore, the pillar shielding part 77 that covers the inside I of the pillar garnish 6 in the shielding main body part 75 is located between the upper end 6a of the pillar garnish 6 and the inner panel 2 on the body 1 side, as shown in FIG. Without intruding into the vehicle, it can smoothly protrude into the vehicle inner side I to cover the vehicle inner side I of the pillar garnish 6, and the second embodiment can provide the same operations and effects as the first embodiment.

  In the airbag 59 of the second embodiment, as shown in FIG. 10, the cell 66 b as the pillar shielding part 79 below the upper edge side bag part 79 is disengaged forward from the region of the rear pillar part RP. FIG. 13 shows the case where the expansion gas G is introduced from the inflow port 66c on the upper end side of the protective expansion portion 66 arranged at the position through the inflow port 77a on the upper end side of the cell 66b through the cell 66a. As shown in the airbag 59 </ b> A, the front end side 73 a of the partition part 73 that partitions the upper edge side bag part 79 and the pillar shielding part 77 is bent downward, and an inflow port 77 a for the inflation gas to the pillar shielding part 77 is formed. The pillar shielding portion 77 may be arranged on the lower end side of the pillar shielding portion 77 so that the pillar shielding portion 77 is further on the downstream side of the inflation gas G than the upper edge side bag portion 79.

It is a schematic front view which shows the vehicle mounting state of the head protection airbag apparatus of 1st Embodiment of this invention. It is a front view of the airbag used for a 1st embodiment. It is a schematic sectional drawing which shows the state at the time of inflation of the airbag used for 1st Embodiment, and respond | corresponds to the III-III site | part of FIG. It is a schematic sectional drawing which shows the state at the time of expansion | swelling of the airbag used for 1st Embodiment, and respond | corresponds to the IV-IV site | part of FIG. It is a schematic sectional drawing of the accommodation state of the airbag used for a 1st embodiment, and corresponds to the VV part of Drawing 1. It is a schematic sectional drawing which shows the operation state of the head protection airbag apparatus of 1st Embodiment in order. It is a schematic front view which shows the vehicle mounting state of the head protection airbag apparatus of 2nd Embodiment. It is a schematic longitudinal cross-sectional view which shows the vehicle mounting state of the head protection airbag apparatus of 2nd Embodiment, and respond | corresponds to the VIII-VIII site | part of FIG. It is a schematic longitudinal cross-sectional view which shows the vehicle mounting state of the head protection airbag apparatus of 2nd Embodiment, and respond | corresponds to the IX-IX site | part of FIG. It is a front view of the airbag used for 2nd Embodiment. It is a schematic longitudinal cross-sectional view which shows the state at the time of expansion | swelling of the airbag used for 2nd Embodiment, and respond | corresponds to the XI-XI site | part of FIG. It is a schematic sectional drawing which shows the operation state of the head protection airbag apparatus of 2nd Embodiment in order. It is a front view which shows the modification of the airbag of 2nd Embodiment.

Explanation of symbols

1 ... Body
2 ... Inner panel,
6 ... Rear pillar garnish,
6a ... (upper end of rear pillar garnish),
7 ... Center pillar garnish,
7a ... (top of center pillar garnish),
8 ... Airbag cover,
19, 59, 59A ... airbags,
35/75 ... shielding body,
36.37 · 77 ... pillar shield,
39 (39A, 39B), 79 ... upper edge side bag part,
CP ... Center pillar,
RP ... Rear pillar part,
W1, W2 ... (window) side window,
G ... expansion gas,
M1, M2 ... Head protection airbag device.

Claims (1)

Folded and stored on the upper edge side of the window inside the vehicle, and when the inflating gas flows, the airbag cover is pushed open to cover the window and expand and inflate.
The airbag is in the upper side region of the rear pillar portion of the vehicle, while pushing open the airbag cover, the upper end of the pillar garnish for covering the interior side of the rear pillar portion, climbs over the vehicle exterior, the interior side A head protection airbag device configured to be housed so as to be expanded and inflated downward,
The airbag is
A gas inflow portion that inflates so as to separate the inner wall portion and the outer wall portion of the vehicle by flowing in the inflation gas;
A non-inflow portion that is formed as a combination of the vehicle inner wall portion and the vehicle outer wall portion and does not allow the inflating gas to flow; and
Configured with
The gas inflow part is
A gas supply path portion arranged linearly along the front-rear direction on the upper edge side of the airbag;
A connection port portion that extends upward from a substantially intermediate portion in the front-rear direction of the gas supply passage portion and is connected to an inflator for supplying the inflation gas to the airbag;
A front protective inflatable portion disposed below the front side of the gas supply path and capable of covering a front seat side window; and a rear seat disposed below the rear of the gas supply path. A protective inflating portion as a shielding main body having a rear protective inflating portion capable of covering the vehicle interior of the rear pillar portion from a side window;
An upper edge side bag portion that is divided from the rear protective inflating portion by the partition portion of the non-inflow portion, and is disposed above the rear protective inflating portion;
Configured with
The post-protective inflating part is
A cell through which an inflating gas flows from the rear end of the gas supply path section through an inflow port disposed near the front end of the partition section;
As a configuration in which an expansion gas is allowed to flow from the cell to expand, a pillar shielding portion that is disposed below the upper edge bag portion and can cover the inside of the pillar garnish,
Configured with
The upper edge bag portion is
After the gas supply path portion, the inner diameter dimension is smaller than the inner diameter dimension when the gas supply path section is completely inflated, so that the upstream side portion of the inflation gas flowing into the airbag from the pillar shielding section is formed. It extends in a rod shape from the end to the rear, and is configured to inflate by inflating gas from an inflow port at the rear end of the gas supply path,
With the upper end of the pillar garnish not projecting to the inside of the vehicle, the shape at the time of completion of the expansion is made such that the lower end of the upper edge side bag portion projects to the inner side of the upper end of the pillar garnish, while the upper end of the pillar garnish and the vehicle It is set as a shape that closes between the body side,
Further, the folded pillar shielding part is wrapped around the folded pillar shielding part on the vehicle outer side of the folded pillar shielding part so that the folded pillar shielding part can be pushed out to the inside of the vehicle at the time of expansion and expansion. A head protection airbag device characterized by comprising:

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