JP5621689B2 - Head protection airbag device - Google Patents

Description

  The present invention relates to a head protection airbag device configured to include an airbag that is folded and stored on an upper edge side of a window in a vehicle.

  Conventionally, in a head protection airbag device, an inflating shielding part in an air bag has a vehicle outer side on the lower end side when inflation is completed so that the head of an occupant can be protected even during a rollover after a side collision. There is one configured so as to be supported by a member constituting the lower edge side of the belt line (see, for example, Patent Document 1).

JP 2008-18837 A (FIG. 1)

  In this conventional head protection airbag device, since the inflation shielding portion of the airbag is supported by the member constituting the lower edge side of the belt line at the lower end side when inflation is completed, even when the vehicle rolls over, It is possible to prevent the expansion shield from slipping through the lower end side toward the vehicle exterior, and the head of the occupant can be protected by the expansion shield. However, in the case of a configuration in which only the lower end side of the inflating shielding part is supported by the vehicle body side member, at the time of rollover, the lower end side of the inflating shielding part may be slackened back and forth so that the occupant cannot be restrained accurately. there were. In order to eliminate such a point, it is possible to consider extending the expansion shield part downward and increasing the area overlapping with the lower edge side member of the belt line, but in this case, the volume of the expansion shield part increases. The problem that it ends up also arises.

  The present invention solves the above-described problem, and suppresses an increase in the volume of the inflating shielding part as much as possible, and a head protection airbag device capable of restraining an occupant accurately by the inflating shielding part even at the time of rollover. The purpose is to provide.

The head protection airbag device according to the present invention is configured to include an airbag that is folded and stored on the upper edge side of a window in a vehicle,
A head protection airbag having a configuration in which an airbag includes an inflating shielding part that expands and inflates so as to cover the vehicle interior of the window, and an attachment part that is disposed on the upper edge side of the inflating shielding part and is attached to the upper edge side of the window A device,
The expansion shielding portion is configured to be supported by the vehicle body side member that forms the lower edge side of the belt line of the vehicle when the airbag is completely inflated. At least one end side, and disposed in a region of the pillar portion of the vehicle that is disposed to be inclined with respect to the vertical direction, and has a support expansion portion that is substantially rod-shaped with the expansion completion shape substantially along the vertical direction. With the configuration,
The pillar portion is configured to include a pillar garnish that covers the inside of the vehicle,
An attachment part that is attached to the area of the pillar part is arranged at a position almost immediately above the support inflating part when the inflation is completed,
The mounting portion is configured so that the amount of upward protrusion from the inflating shielding portion is larger than that of the mounting portion disposed in another part in a state where the airbag is flatly deployed. The height dimension is set to a dimension that can be arranged at a position such that the upper end of the support inflating portion when the expansion is completed is supported on the inner side of the pillar garnish,
When the inflation of the airbag is completed, the support inflating part is supported on the vehicle outer side on the lower end side by a vehicle body side member constituting the lower edge side of the belt line, and the vehicle outer side on the upper end side is supported by the inner side of the pillar garnish. Te, and disposed, wherein the Turkey.

  In the head protection airbag device of the present invention, the inflating shielding part has a support inflating part that is substantially rod-shaped along the up and down direction on at least one end side in the front-rear direction when inflating is completed, The vehicle outer side on both the upper and lower ends at the completion of the expansion of the support expansion portion is supported by the pillar portion and the member on the lower edge side of the belt line. For this reason, when the inflation of the airbag is completed, the support-side inflating portion disposed on one end side in the front-rear direction of the inflating shielding portion is stably supported by the vehicle body side member on the upper end side and the lower end side, so Since it is arranged as a substantially stick-like rod shape, the expansion portion adjacent to the support expansion portion in the expansion shielding portion can be prevented from moving so as to be separated from the vehicle outside over the entire upper and lower regions. As a result, in the head protection airbag device according to the present invention, the region that overlaps with the member on the lower edge side of the belt line on the lower end side of the inflating shielding portion is small even when the roll outside, the vehicle outer side on the lower end side of the inflating shielding portion. Movement can be suppressed, and sufficient occupant protection performance can be obtained. In other words, in the head protection airbag device of the present invention, it is possible to accurately protect the occupant by the expansion shielding portion at the time of rollover, without setting the upper and lower width dimensions of the expansion shielding portion large.

Therefore, in the head protection airbag device of the present invention, an increase in the volume of the inflating shielding part can be suppressed as much as possible, and the occupant can be accurately restrained by the inflating shielding part even at the time of rollover.
Further, in the head protection airbag device of the present invention, since the attachment portion attached to the area of the pillar portion is arranged at a position almost immediately above the support inflation portion, the support inflation is performed when the inflation of the airbag is completed. The position shift of the region on the upper end side of the part can be suppressed.

  Further, in the head protection airbag device of the present invention, a configuration is provided in which an edge side attachment portion that is attached to a region of the pillar portion is disposed within a range from directly above the support inflating portion in the airbag to the edge side in the front-rear direction. If so, it is preferable that the support inflatable portion can be prevented from shifting toward the front and rear central sides when the airbag is inflated.

It is the schematic front view which looked at the head protection airbag apparatus which is one Embodiment of this invention from the vehicle inside. It is sectional drawing of the II-II site | part of FIG. It is a front view of the state where the air bag used with the head protection air bag device of an embodiment was developed flat. In the head protection airbag device of an embodiment, it is the outline front view which looked at the state where the airbag completed inflation from the car inside. It is a schematic sectional drawing of the site | part of the support expansion part of the state which the airbag completed the expansion | swelling in the head protection airbag apparatus of embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the head protection airbag device M of the embodiment is mounted on a two-row seat type vehicle V having two windows (side windows) W1 and W2. The head protection airbag device M according to the embodiment includes an airbag 19, an inflator 14, mounting brackets 11 and 15, and an airbag cover 9. As shown in FIGS. 1 and 2, the airbag 19 has a rear pillar that passes from the lower edge side of the front pillar portion FP to the lower edge side of the roof side rail portion RR on the upper edge side of the windows W1 and W2 on the inner side of the vehicle V. The region up to the region RP is folded and stored.

As shown in FIGS. 1 and 2, the airbag cover 9 is formed from the lower edges of the front pillar garnish 4 disposed in the front pillar portion FP and the roof head lining 5 disposed in the roof side rail portion RR. ,It is configured. The front pillar garnish 4 and the roof head lining 5, as made of synthetic resin, in the front pillar FP and the roof side rail portion RR, respectively, to cover fraud and mitigating risk interior side in the vehicle side of the inner panel 2 of the body 1 side As shown in FIG. The airbag cover 9 is configured to be opened by being pushed by the airbag 19 so that the airbag 19 accommodated in a folded state can be protruded toward the vehicle interior side.

  The inflator 14 supplies inflation gas to the airbag 19, and as shown in FIG. 1, a gas cylinder (not shown) capable of discharging inflation gas to the tip side as a cylinder type whose outer shape is substantially cylindrical. A discharge port is provided. The inflator 14 is inserted into a gas inlet portion 24 (to be described later) of the airbag 19 including the vicinity of the gas discharge port, and uses the clamp 17 mounted on the rear end 24a side of the gas inlet portion 24. The air bag 19 is connected. Further, the inflator 14 uses a mounting bracket 15 for holding the inflator 14 and a bolt 16 for fixing the mounting bracket 15 to the inner panel 2 on the body 1 side. It is attached at a position to be above. The inflator 14 is electrically connected to a control device (not shown) of the vehicle via a lead wire (not shown). When the control device detects a side collision of the vehicle V, the inflator 14 inputs an operation signal from the control device. And is configured to operate.

  Each mounting bracket 11 is composed of two sheet metal plates. As shown in FIG. 2, each mounting bracket 11 is attached to each mounting portion 33 so as to sandwich each mounting portion 33 described later of the airbag 19. Each attachment portion 33 is attached and fixed to the inner panel 2 on the body 1 side using the bolts 12.

  As shown in the two-dot chain line of FIG. 1 and FIG. 4, the airbag 19 is caused to flow inflating gas from the inflator 14 and expand from the folded state to open the windows W1, W2 and the windows W1, W2. The pillar garnish 6 of the center pillar portion CP disposed between and the pillar garnish 7 of the rear pillar portion RP disposed on the rear side of the window W2 are configured to expand and expand so as to cover the inside of the vehicle. As shown in FIG. 3, the airbag 19 has a plurality of inflatable shielding portions 20 that inflate so as to cover the vehicle inner side of the windows W <b> 1 and W <b> 2 when inflation is completed, and a plurality of airbags 19 along the front-rear direction on the upper edge 20 a side of the inflating shielding portion 20. The expansion shielding portion 20 is configured to include a mounting pillar 33 disposed at the front side of the window W1 when the expansion is completed, and from the window W1 to the center pillar. The expansion completion shape is a substantially rectangular plate shape whose longitudinal direction is substantially along the front-rear direction so as to be able to cover the vehicle interior to the front side of the rear pillar part RP via the part CP. In addition, as shown in FIGS. 4 and 5, the inflating shielding portion 20 has an upper and lower width dimension that can protect the head of the occupant seated on the seat, and the lower edge 20 b is the lower edge of the windows W 1 and W 2. The dimension is set so as to be positioned below the belt line BL composed of That is, the expansion shielding part 20 is configured to be supported by the door trim 8 which is a vehicle body side member constituting the lower edge side of the belt line BL on the vehicle outer side of the lower end side region 20c. The shielding part 20 has lower edges of a front seat inflating part 26, a rear seat inflating part 27, and a support inflating part 28, which will be described later, which are inflated by inflowing an inflating gas, below the belt line BL. It is configured to be positioned. In the case of the embodiment, the expansion shielding part 20 is configured from an area of the airbag 19 excluding the attachment part 33 and the gas inlet part 24.

  In the case of the embodiment, the airbag 19 is manufactured by bag weaving using polyamide yarn, polyester yarn or the like. As shown in FIG. 3, the airbag 19 contains the inflation gas from the inflator 14 so as to separate the vehicle inner wall portion 22 a located on the vehicle inner side and the vehicle outer wall portion 22 b located on the vehicle outer side when inflation is completed. The gas inflow part 22 expand | swells by making it flow in, and the non-inflow part 31 which does not flow in the gas for expansion | swelling is comprised.

  In the case of the embodiment, the gas inflow portion 22 includes a gas guide channel 23 and a protective expansion portion 25 in the expansion shielding portion 20, and a gas inlet portion 24 formed so as to protrude from the upper edge 20 a side of the expansion shielding portion 20. And is configured.

  As shown in FIG. 3, the gas guide channel 23 is disposed over substantially the entire front and rear so as to extend substantially along the front-rear direction on the upper edge 20 a side of the expansion shield 20. In this configuration, the discharged expansion gas G is guided to the area of the protective expansion portion 25 disposed below the gas guide channel 23. In the case of the embodiment, a gas inlet port 24 connected to the inflator 14 is communicated with the gas guide channel 23 in the vicinity of the center of the gas guide channel 23 in the front and rear directions. 20) so that it protrudes upward from 20). In the case of the embodiment, the gas inflow port portion 24 is formed so as to be inclined rearwardly with respect to the gas guide channel 23, and the rear end 24a side is opened so that the inflator 14 can be inserted. And the gas inflow port part 24 will be connected with the inflator 14 using the clamp 17 in the state by which it was armored by the inflator 14.

  As shown in FIG. 3, the protective inflating portion 25 includes a front seat inflating portion 26 that inflates so as to cover the inner side of the front window W1 and a rear side window W2 of the vehicle. A rear-seat inflating portion 27 that inflates so as to cover it, and a support inflating portion 28 that is disposed adjacent to the front side of the front-seat inflating portion 26 are provided.

  Each of the front seat inflating portion 26 and the rear seat inflating portion 27 is configured so that the inner region is partitioned by partition portions 35 and 36 to be described later, and the thickness when the expansion is completed is regulated. A plurality of vertical cells 26a, 26b, 26c, 26d, 26e, 27a, and 27b partitioned by the portions 35 and 36 are arranged in parallel in the front-rear direction. Specifically, the front seat inflating portion 26 is configured by arranging five vertical cells 26a, 26b, 26c, 26d, and 26e in parallel in the front-rear direction, and the rear seat inflating portion 27 includes two vertical cells 27a, 27b is arranged in parallel in the front-rear direction. Each of the vertical cells 26a, 26b, 26c, 26d, 26e, 27a, and 27b is configured to swell in a substantially bar shape along the substantially vertical direction when the airbag 19 is completely inflated.

  The support inflating portion 28 is disposed on the front end side, which is one end side in the front-rear direction of the inflating shielding portion 20, and is formed adjacent to the front side of the front seat inflating portion 26 in the case of the embodiment. The support inflating portion 28 is disposed in the region of the front pillar portion FP that is inclined with respect to the vertical direction when the airbag 19 is completely inflated. Specifically, the support inflating portion 28 is arranged so as to cover the inside of the vehicle at a position slightly behind the front and rear center of the front pillar garnish 4 that covers the inside of the front pillar portion FP when the airbag 19 is completely inflated. Therefore, the expansion completion shape is a substantially rod shape substantially along the vertical direction. The support inflating portion 28 is inflated and shielded so that the lower end 28b side when the inflating is completed substantially coincides with the lower edge 20b of the inflating shielding portion 20 and the upper end 28a side is stepped with respect to the area of the inflating portion 26 for the front seat. It is comprised so that it may be located below the area | region of the expansion part 27 for front seats in the part 20. FIG. In other words, the support inflating portion 28 is configured such that the upper and lower width dimensions are smaller than the upper and lower width dimensions in the region of the front seat inflating portion 26 and the rear seat inflating portion 27 in the inflating shielding portion 20. . When the airbag 19 is completely inflated, the support inflating portion 28 is supported on the vehicle outer side O on the lower end 28b side by the door trim 8 that is a member on the vehicle body constituting the lower edge side of the belt line BL, and the upper end 28a. The vehicle outer side O on the side is supported and arranged by a portion slightly rearward from the front and rear center of the front pillar garnish 4 of the front pillar portion FP.

  The non-inflow portion 31 includes an attachment portion 33, a peripheral edge portion 32, partition portions 35, 36, and 37, a plate-like portion 39, and a connecting belt 40 that constitute the expansion shielding portion 20. The peripheral edge portion 32 constitutes the outer peripheral edge of the airbag 19 and is formed so as to surround the gas inflow portion 22.

The attachment portion 33 is a portion for attaching the airbag 19 to the inner panel 2 on the body 1 side, and protrudes upward from the peripheral edge portion 32 on the upper edge 20a side of the expansion shielding portion 20 in the front-rear direction. A plurality are arranged along. In the case of the embodiment, six attachment portions 33 are arranged. Each mounting portion 33 is formed with a mounting hole (not shown) through which the mounting bolt 12 can be inserted. In the case of the embodiment, the mounting portion 33A arranged so as to extend from the upper edge side of the support inflating portion 28 at a position directly above the support inflating portion 28 is in a state of being flattened compared to the other mounting portions 33. It is comprised so that the protrusion amount to the upper direction from the expansion | swelling shielding part 20 may be enlarged, and the attachment hole is arrange | positioned in the front end side. The support inflating portion 28 is configured to project the upper end 28a side from the front pillar garnish 4 when the airbag 19 has been inflated, and to cover the inside I of the front pillar garnish 4 with the region on the upper end 28a side. When the inflation of the airbag 19 is completed, the attachment portion 33A is disposed so as to bypass the front end side portion (airbag cover 9) of the opened front pillar garnish 4, as shown in FIG. The dimension is set to a dimension that can be arranged at a position where the upper end 28a of the support expansion part 28 is supported on the vehicle inner side of the front pillar garnish 4 without excessively pulling the support expansion part 28. .

  The partition portions 35 and 36 are respectively disposed in the regions of the front seat inflating portion 26 and the rear seat inflating portion 27, and the inner regions of the front seat inflating portion 26 and the rear seat inflating portion 27. Is a portion that divides the vertical cell 26a, 26b, 26c, 26d, 26e, 27a, 27b. The partition portions 35A, 35B, 35C, and 35D are formed to extend upward from the lower edge side of the peripheral edge portion 32, and the partition portion 36 is formed to extend from the upper front edge of the plate-like portion 39 to the front lower side. . The partition portion 37 partitions the front seat expansion portion 26 and the support expansion portion 28 and is formed to extend upward from the lower edge side of the peripheral edge portion 32. The plate-like portion 39 has a substantially rectangular plate shape and is disposed below the gas guide channel 23 between the front seat inflating portion 26 and the rear seat inflating portion 27. The connection belt 40 is configured as a belt shape that extends forward from the vicinity of the lower end of the front edge of the expansion shielding portion 20 (the vicinity of the lower end 28b of the support expansion portion 28). In the area of the front pillar portion FP, there is an attachment piece portion 40a attached to the inner panel 2 on the body 1 side. And in the head protection airbag apparatus M of embodiment, this attachment piece part 40a will comprise the edge side attachment part arrange | positioned in the range from right above the support expansion part 28 to the front edge side.

  Next, mounting of the head protection airbag device M of the embodiment on the vehicle V will be described. First, the inflating shielding portion of the airbag 19 in a state where the vehicle inner side wall portion 22a and the vehicle outer side wall portion 22b are overlapped and flattened is folded so as to reduce the width dimension in the vertical direction, and can be broken after the folding is completed. A predetermined portion is wrapped with a wrapping material for preventing collapse. Thereafter, the inflator 14 to which the mounting bracket 15 has been attached is connected to the gas inlet portion 24 of the airbag 19 using the clamp 17, and the mounting bracket 11 is fixed to each mounting portion 33 of the airbag 19. The airbag assembly is formed.

  Next, the mounting bracket 15 is disposed at a predetermined position of the inner panel 2 on the body 1 side, and is fastened with bolts 16 to fix the inflator 14 to the inner panel 2. If attached to the panel 2, the airbag assembly can be attached to the body 1. Then, a lead wire (not shown) extending from a predetermined control device for inflator operation is connected to the inflator 14, the front pillar garnish 4 and the roof head lining 5 are attached to the body 1, and the center pillar garnish 6 and the rear pillar garnish 7 are attached. If attached to the body 1, the head protection airbag device M can be mounted on the vehicle.

  Then, after the head protection airbag device M is mounted on the vehicle V, if the inflator 14 is actuated in response to an actuation signal from the control device at the time of a side collision of the vehicle V, the inflator 14 is inflated. The gas G flows into the inflating shielding part 20 of the airbag 19 and the inflating inflating shielding part 20 breaks the wrapping material (not shown), and further, at the lower edges of the front pillar garnish 4 and the roof head lining 5. Pushing and opening the air bag cover 9 configured to protrude downward, as shown in the two-dot chain line of FIG. 1 and FIG. 4, covers the vehicle interior side of the windows W1 and W2, the center pillar portion CP, and the rear pillar portion RP. As shown in FIG.

  And in the head protection airbag apparatus M of embodiment, the expansion | swelling shielding part 20 has the support expansion | swelling part 28 by which the expansion completion shape is made into the substantially rod shape along the up-down direction in the front end side at the time of completion of expansion | swelling. As shown in FIG. 5, the front pillar garnish 4 (substantially substantially) covers the vehicle inner side of the front pillar portion FP, as shown in FIG. In this configuration, the inner panel 2) of the rigid front pillar portion FP and the door trim 8 disposed on the lower edge side of the belt line BL are supported. Therefore, when the inflation of the airbag 19 is completed, the support inflating portion 28 disposed on the front end side of the inflating shielding portion 20 includes the front pillar garnish 4 and the door trim 8 which are members on the vehicle body side on the upper end 28a side and the lower end 28b side. Therefore, the front seat inflating part 26 adjacent to the support inflating part 28 in the inflating shielding part 20 is arranged over substantially the entire upper and lower parts. It is possible to suppress movement away from the outside. As a result, in the head protection airbag device M of the embodiment, even if the region (lower end side region 20c) that overlaps the lower edge side member (door trim 8) of the belt line BL on the lower end side of the expansion shielding portion 20 is small, At the time of rollover, the movement of the lower end (lower edge 20b) side of the expansion shielding portion 20 to the vehicle outer side can be suppressed, and sufficient occupant protection performance can be obtained. In other words, in the head protection airbag device M of the embodiment, the occupant can be accurately protected by the expansion shielding portion 20 at the time of rollover without setting the upper and lower width dimensions of the expansion shielding portion 20 large. . In particular, in the embodiment, the support inflating portion 28 is positioned below the region of the front seat inflating portion 27 in the inflating shielding portion 20, with the upper end 28 a side being stepped with respect to the region of the front seat inflating portion 26. Since the upper and lower width dimensions are set to be smaller than the upper and lower width dimensions in the region of the front seat inflating portion 26 and the rear seat inflating portion 27 in the expansion shielding portion 20, An increase in the volume of the expansion shielding part 20 can be suppressed as much as possible.

  Therefore, in the head protection airbag device M of the embodiment, an increase in the volume of the inflating shielding part 20 can be suppressed as much as possible, and the occupant can be accurately restrained by the inflating shielding part 20 even during a rollover.

  In particular, in the head protection airbag device M of the embodiment, the front seat inflating portion 26 and the rear seat inflating portion 27 are each a vertical cell 26a having a substantially rod shape in which the inflating completion shape is substantially along the vertical direction. , 26b, 26c, 26d, 26e, 27a, 27b are juxtaposed in the front-rear direction, so that each vertical cell 26a, 26b, 26c, 26d, 26e, 27a, 27b contracts the width dimension in the front-rear direction. Thus, when the airbag 19 is completely inflated, a tension substantially along the front-rear direction is generated on the lower edge 20b side of the inflating shield 20. Therefore, it is possible to further suppress the lower end (lower edge 20b) side of the expansion shielding portion 20 from slacking back and forth and moving to the vehicle exterior during rollover.

  Further, in the head protecting airbag device M of the embodiment, the connecting belt 40 is disposed at a position on the leading edge side from directly above the support inflating portion 28 in the airbag 19, and the attachment piece on the leading end side of the connecting belt 40. The part 40a is attached to the front pillar part FP as an edge side attaching part. Therefore, when the inflation of the airbag 19 is completed, it is possible to accurately suppress the support inflating portion 28 from shifting to the front and rear center sides. Of course, if such a point is not taken into consideration, the attachment portion does not have to be arranged on the front edge side of the support expansion portion.

  Furthermore, in the head protection airbag device M of the embodiment, the attachment portion 33A is provided immediately above the support inflating portion 28, and the attachment portion 33A is attached to the front pillar portion FP. Therefore, when the inflation of the airbag 19 is completed, the displacement of the region on the upper end 28a side of the support inflating portion 28 can be suppressed, and the vehicle exterior O on the upper end 28a side of the support inflating portion 28 can be reliably connected to the front pillar portion FP. Can be supported. Of course, if this point is not taken into consideration, it is not necessary to dispose the mounting portion directly above the support expansion portion.

  In the embodiment, the airbag 19 in which the support inflating portion 28 is disposed on the front end side of the inflating shielding portion 20 has been described as an example, but the type including a rear pillar portion that is inclined with respect to the vertical direction. When mounted on a vehicle, use an airbag having a configuration in which a support inflating portion is disposed on the rear end side of the inflating shielding portion or a configuration in which supporting inflating portions are disposed on both front and rear sides of the inflating shielding portion. Also good. Further, the vehicle body side member that supports the vehicle outer side on the lower end 28b side of the support inflating portion 28 is not limited to the door trim 8, and for example, in an airbag in which the support inflating portion is disposed on the rear end side of the inflating shielding portion. When a support expansion part is provided on the side of the third row seat in a three-row seat type vehicle, the vehicle body side member that supports the lower end side of the support expansion part is composed of an interior material that covers the inside of the vehicle body It will be.

  The head protection airbag device M according to the embodiment is configured to operate at the time of a side collision of the vehicle. However, when the support inflating unit is disposed on the front end side of the expansion shielding unit, the head protecting airbag device M is operated at the time of an offset collision. You may comprise as follows.

1 ... Body
2 ... Inner panel,
4 ... Front pillar garnish,
8 ... Door trim,
11 ... Mounting bracket,
14 ... Inflator,
19 ... Airbag,
20 ... inflatable shield,
20a ... upper edge,
28 ... support expansion part,
28a ... upper end,
28b ... lower end,
33, 33A ... mounting portion,
40 ... connecting belt,
40a ... mounting piece (edge side mounting portion),
BL ... Belt line,
FP ... Front pillar part,
W1, W2 ... windows,
V ... Vehicle,
M: Head protection airbag device.

Claims (2)

It is configured to include an airbag that is folded and stored on the upper edge side of a window in a vehicle,
A head having a configuration in which the airbag includes an inflating shielding portion that is deployed and inflated so as to cover the vehicle interior side of the window, and an attachment portion that is disposed on the upper edge side of the inflating shielding portion and is attached to the upper edge side of the window. A protective airbag device,
The inflation shield is configured such that when the airbag is completely inflated, the vehicle outer side on the lower end side is supported by a vehicle body side member that forms the lower edge side of the belt line of the vehicle. A support expansion that is disposed at least on one end side in the front-rear direction and is disposed in an area of the pillar portion of the vehicle that is disposed to be inclined with respect to the vertical direction so that the expansion completion shape is substantially a bar shape substantially along the vertical direction. A portion,
The pillar portion is configured to include a pillar garnish that covers the inside of the vehicle,
An attachment portion that is attached to the region of the pillar portion is arranged at a position almost immediately above the support inflating portion when the expansion is completed,
The mounting portion is configured to increase the upward protrusion amount from the inflating shielding portion in a state where the airbag is flatly deployed, as compared to mounting portions disposed at other parts. The length dimension is set to a dimension that allows the upper end of the support inflatable portion when the expansion is completed to be positioned at a position that is supported on the inside of the pillar garnish.
When the inflation of the airbag is completed, the support inflating portion is supported by a vehicle body side member constituting the lower edge side of the belt line on the vehicle outer side on the lower end side, and the vehicle outer side on the upper end side is supported by the pillar garnish vehicle. It is supported by the inner, arranged head protection air bag device comprising a Turkey.   The airbag has an edge-side attachment portion that is disposed within a range from immediately above the support inflating portion to an edge side in the front-rear direction and attached to a region of the pillar portion. Item 2. The head protection airbag device according to Item 1.

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