JP2008265455A - Head protection airbag device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a head protective airbag device capable of suppressing uncontrollability of an airbag body and entry thereof between projections for fitting adjacent components. <P>SOLUTION: The head protective airbag device has a reinforcing member 40 which extends in the longitudinal direction of a vehicle, and is mounted on an airbag body 30 and more rigid than the airbag body 30. Thus, the bending rigidity of the airbag body 30 is enhanced, and uncontrollability of the airbag body 30 can be suppressed when inflating and deploying the airbag body 30. Further, the reinforcing member 40 extends across at least two of a plurality of projections 61 for mounting components provided on a roof side rail 60. Thus, even when the airbag body 30 is uncontrollable (deviated), entry of the airbag body 30 between the plurality of projections 61 for fitting components with the reinforcing member 40 being thereacross is suppressed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a head protection airbag device for a vehicle.

  In Patent Document 1, a plurality of component mounting projections such as an assist grip mounting bracket are provided in the vehicle front-rear direction on the roof side rail of the vehicle, and the airbag main body is prevented from biting into the component mounting projection. A head protection airbag device provided with a biting prevention piece is disclosed.

However, the conventional head protection airbag device has the following problems.
Since the length of the biting prevention piece in the vehicle front-rear direction is short, even if the biting prevention piece is provided, the airbag main body 3 may be violent when gas is supplied to the airbag main body 3, as shown in FIG. (Blurred) may enter between adjacent component mounting projections 6. If the airbag main body 3 enters between the component mounting projections 6, the airbag main body 3 hits the component mounting projections 6, and the cross-sectional area of the gas channel 3 a of the airbag main body 3 is narrowed. As a result, the pressure in the airbag body 3 increases, and damage such as misalignment occurs in the airbag body 3.
JP 2002-67859 A

  The objective of this invention is providing the head protection airbag apparatus which can suppress that an airbag main body violates and enters between adjacent component attachment protrusions.

The present invention for achieving the above object is as follows.
(1) an airbag body having an attachment portion attached to the roof side rail of the vehicle;
A reinforcing member that extends in the vehicle front-rear direction and is attached to the airbag body and has higher rigidity than the airbag body;
A head protection airbag device comprising:
The roof side rail is provided with a plurality of component mounting projections in the vehicle front-rear direction, and the reinforcing member is at least two of the plurality of component mounting projections below the plurality of component mounting projections. A head protection airbag device extending over the above.
(2) The airbag main body includes a gas flow path extending in the vehicle front-rear direction when deployed, and a plurality of cells positioned below the gas flow path and provided in the vehicle front-rear direction,
The head protection airbag device according to (1), wherein the reinforcing member is disposed in proximity to the gas flow path.
(3) A plurality of attachment portions of the airbag body are provided,
The airbag main body has a cut from the upper end of the airbag main body to the lower side on at least a part of both sides between the plurality of attachment portions, and the portion between the cuts is folded downward to form the airbag. It has a loop part formed by bonding to the unfolded part of the main body,
The head protection airbag device according to (1) or (2), wherein the reinforcing member is inserted into a loop portion of the airbag body and attached to the airbag body.
(4) The airbag body includes a loop portion formed in a bag weave at the upper end portion or in the vicinity thereof and extending in the vehicle front-rear direction.
The head protection airbag device according to (1) or (2), wherein the reinforcing member is inserted into a loop portion of the airbag body and attached to the airbag body.
(5) A plurality of attachment portions of the airbag body are provided,
The airbag main body has a cut from the upper end of the airbag main body to the lower side on at least a part of both sides between the plurality of attachment portions, and the portion between the cuts is folded downward to form the airbag. It has a loop part formed by bonding to the unfolded part of the main body,
The reinforcing member includes a through-hole penetrating in a direction orthogonal to the vehicle front-rear direction in a part of the vehicle front-rear direction,
The head protection airbag according to (1) or (2), wherein the reinforcing member is attached to the inner tube when a folded portion for forming the loop portion of the inner tube passes through the through hole. apparatus.

According to the head protecting airbag device of (1) above, since the reinforcing member is provided, the bending rigidity of the airbag body is improved as compared with the case where the reinforcing member is not provided. Therefore, compared with the case where the reinforcing member is not provided, it is possible to suppress the airbag body from violating (blurring) due to the reaction to which the gas is supplied when the airbag body is deployed and inflated.
In addition, since the reinforcing member extends over at least two of the plurality of component mounting protrusions, even if the airbag main body is violent (blurred), the airbag main body Moreover, it can suppress entering between the protrusions for several component attachment which are straddling.

  According to the head protection airbag device of (2) above, since the reinforcing member is disposed close to the gas flow path, compared to the case where the reinforcing member is disposed away from the gas flow path, The rigidity in the vicinity of the gas flow path of the airbag main body can be increased, and the airbag main body can be prevented from violating (blurring) due to the reaction to which the gas is supplied when the airbag main body is inflated and deployed.

  According to the head protection airbag device of (3) above, the airbag body is formed by cutting at least a part of both sides between the plurality of attachment portions and folding back the portion between the cuts. Since the loop portion is provided and the reinforcing member is inserted into the loop portion and attached to the airbag body, the reinforcing member can be supported by utilizing a portion that has been conventionally cut off (removed) between the plurality of attaching portions. Therefore, the material can be effectively used compared to the case where the portion that has been cut off (removed) between the plurality of attachment portions is not used.

  According to the head protection airbag device of (4) above, the airbag body includes a loop portion formed by bag weaving at or near the upper end portion, and the reinforcing member is inserted into the loop portion of the airbag body. Since it is attached to the airbag body, stitching or the like for attaching the reinforcing member to the airbag body is unnecessary. Therefore, it is possible to reduce the number of steps for attaching the reinforcing member to the airbag body as compared with the case where stitching or the like is required.

  According to the head protection airbag device of (5) above, the airbag body is formed by cutting at least a part of both sides between the plurality of attachment portions and folding back the portion between the cuts. A loop portion, and the reinforcing member includes a through-hole penetrating in a direction orthogonal to the vehicle front-rear direction in a part of the vehicle front-rear direction, and the reinforcing member is folded to form a loop portion of the airbag body Since the part is attached to the airbag body by inserting the through hole, the reinforcing member can be supported by using the part that has been conventionally cut off (removed) between the plurality of attachment parts. Therefore, the material can be effectively used compared to the case where the portion that has been cut off (removed) between the plurality of attachment portions is not used. Moreover, since the folding | returning part for forming the loop part of an airbag main body has penetrated the through-hole of a reinforcement member, it can suppress that a reinforcement member slip | deviates to a vehicle front-back direction with respect to an airbag main body.

Below, the head protection airbag apparatus of this invention Example is demonstrated with reference to FIGS. 1 to 3 show a head protecting airbag device according to a first embodiment of the present invention, FIGS. 4 and 5 show a head protecting airbag device according to a second embodiment of the present invention, and FIGS. The head protection airbag apparatus of this invention Example 3 is shown. In the figure, UP indicates the upper side, and FR indicates the front in the vehicle front-rear direction.
Portions common to all the embodiments of the present invention are denoted by the same reference numerals throughout the embodiments of the present invention.

[Example 1] (FIGS. 1 to 3)
First, the configuration of the first embodiment of the present invention will be described with reference to FIGS.
A head protecting airbag device (hereinafter also simply referred to as an airbag device) 10 according to Embodiment 1 of the present invention is a curtain airbag device as shown in FIG. The airbag device 10 is mounted on a three-row seat vehicle. However, the airbag device 10 may be mounted on a vehicle other than the three-row seat vehicle.
The airbag device 10 includes an airbag 20 and an inflator 50. The airbag 20 includes an airbag body 30 and a reinforcing member 40.

  The airbag main body 30 is folded and arranged on the roof side of the vehicle, the roof side and the front pillar, or the roof side, the front pillar, and the rear pillar when not deployed. The folding method of the airbag body 30 may be bellows folding, roll folding, compound folding of bellows folding and roll folding, or other folding. The airbag main body 30 may be formed by bag weaving by a jacquard loom, or may be formed by partially stitching or welding two or more cloths. A silicon coat is applied to the outer surface of the airbag body 30. However, a silicon coat may be applied to the inner surface of the airbag body 30 as long as it can be applied to the inner surface of the airbag body 30.

  When the gas from the inflator 50 is supplied at the time of a vehicle collision (including the case of collision prediction), the airbag main body 30 is deployed and inflated downward and in a space between the occupant and the side wall of the vehicle, Protect the head mainly to the crew.

  The airbag main body 30 includes an attachment portion 31 for attaching the airbag main body 30 to the vehicle, a gas flow path 32 extending in the vehicle front-rear direction when deployed on the upper portion of the airbag main body 30, and a lower side than the gas flow path 32 when deployed. And a plurality of cells (expansion chamber portions) 33 provided in the vehicle longitudinal direction.

  The attachment portion 31 includes a first attachment portion 31a provided to protrude upward from the upper end of the airbag body 30, and a second attachment portion 31b provided to protrude forward from the vehicle front side end portion of the airbag body 30. And comprising.

  A plurality of first attachment portions 31a are provided in the vehicle front-rear direction. The first attachment portion 31a is fixedly attached to the roof side rail 60 extending in the vehicle front-rear direction using bolts (not shown). The first attachment portion 31 a may be directly attached to the roof side rail 60, or may be attached to the roof side rail 60 using a bracket (not shown) fixed to the roof side rail 60. In addition to the bracket for attaching the airbag main body 30, the roof side rail 60 is further provided with a plurality of component attaching protrusions 61 that protrude toward the center in the left-right direction of the vehicle. The component mounting protrusion 61 is, for example, mounted with an assist grip mounting bracket for mounting an assist grip, a sunroof housing mounting bracket for mounting a sunroof housing, a coat hook mounting bracket for mounting a coat hook, and a roof head lining. For mounting a roof head lining.

  One second mounting portion 31b is provided. The second attachment portion 31b is attached to the A pillar (front pillar) 62 of the vehicle using a bolt or the like. The second attachment portion 31b is attached to the A pillar 62 using a strap 31c formed of the same material as the base fabric of the airbag body 30.

  The gas flow path 32 is provided below the first mounting portion 31a and the component mounting projection 61 of the roof side rail 60, and is provided in the vicinity of the first mounting portion 31a and the component mounting projection 61. Yes. The gas flow path 32 may be composed of only one flow path, or may be composed of a plurality of flow paths. In the illustrated example, a case is shown in which the first gas channel 32a and the second gas channel 32b located behind the vehicle from the first gas channel 32a are configured with two channels. In the embodiment of the present invention, a case will be described in which the first gas channel 32a and the second gas channel 32b are constituted by two channels.

  The rear end portion of the first gas passage 32a and the front end portion of the second gas passage 32b are fitted to the downstream end portion in the gas flow direction of the diffuser pipe 51 of the inflator 50, connected to the diffuser pipe 51, and fastened. Is done.

  In order to rectify the gas supplied from the inflator 50 to the gas flow path 32 and to reduce damage to the airbag body 30 due to the gas, an inner tube (not shown) extending in the vehicle front-rear direction is used as a gas. It may be disposed in the flow path 32. When an inner tube (not shown) is provided, the inner tube may be provided only in one of the first and second gas flow paths 32a and 32b, and the first and second gas flows may be provided. You may be arrange | positioned in both the path | routes 32a and 32b. Further, when an inner tube (not shown) is provided, the inner tube may be provided over the entire longitudinal direction of the gas flow path in which the inner tube is provided, and the inner tube is provided. The gas flow path may be disposed only in a part of the vehicle front-rear direction.

  When the cell 33 is unfolded, three cells 33 are located on the side of the occupant seated in the front seat (first row of the three-row seats), and three cells on the side of the occupant seated in the rear one seat (second row of the third-row seats) Two, two on the side of the occupant seated in the rear two seats (the third row of the third row seats). However, the number of cells 33 (hereinafter referred to as the first cell 33a) on the side of the front seat occupant, the number of cells 33 (hereinafter referred to as the second cell 33b) on the side of the occupant on the rear seat, The number of side cells 33 (hereinafter referred to as third cells 33c) of the two-seat occupant is appropriately changed by changing the number of closed portions (non-inflatable portions) 34 provided between adjacent cells 33. It may be changed. Each cell 33 may be communicated only with the gas flow path 32, and may be communicated not only with the gas flow path 32 but also with a portion other than the gas flow path 32 such as a lower end portion. The first cell 33a and the second cell 33b are located below the first gas flow path 32a. The third cell 33c is located below the second gas flow path 32b.

  The gas that flows into the gas flow path 32 from the inflator 50 at the time of the collision of the vehicle expands the gas flow path 32 and flows into the first, second, and third cells 33a, 33b, and 33c and enters the first and second 2. The third cells 33a, 33b and 33c are expanded and expanded.

  The reinforcing member 40 is made of a material having higher rigidity than the airbag body 30, and is made of, for example, metal, fiber (carbon fiber or the like) reinforced resin, or fiber (carbon fiber or the like) reinforced metal. The reinforcing member 40 is attached (supported, connected) to the airbag body 30. The reinforcing member 40 is attached to the airbag body 30 using a part of the airbag body 30. The reinforcing member 40 is accommodated in the accommodation location of the airbag body 30 together with the airbag body 30 when the airbag body 30 is not deployed. The reinforcing member 40 may be a hollow pipe or a solid rod. The cross-sectional shape of the reinforcing member 40 may be a circle, a triangle, a quadrangle, or a pentagon or more polygon.

  The reinforcing member 40 extends in the vehicle front-rear direction. The reinforcing member 40 is disposed below the first attachment portion 31 a and the component attachment protrusion 61 and above the gas flow path 32. The reinforcing member 40 is disposed in the vicinity of the gas flow path 32. The reinforcing member 40 may be disposed only on a part of the gas flow path 32 in the vehicle front-rear direction above the gas flow path 32 except for a portion connected to the inflator 50 of the airbag body 30. It is desirable that the gas channel 32 is disposed over the whole or substantially the entire vehicle longitudinal direction above the gas channel 32. This is because the airbag member 30 can be prevented from being shaken (blurred) by the reinforcing member 40 over the entire gas channel 32 or substantially the entire gas channel 32. The reinforcing member extends below at least two of the plurality of component mounting projections 61 below the plurality of component mounting projections 61 of the roof side rail 60.

The inflator 50 supplies inflation gas to the airbag 20 at the time of a vehicle collision. The inflator 50 may be disposed on the C-pillar of the vehicle, may be disposed on the roof side rail 60, may be disposed on the roof of the vehicle, or may be disposed on other parts. Further, only one inflator 50 may be provided, or two or more inflators 50 may be provided. In the illustrated example, the inflator 50 is disposed on the C pillar 63 of the vehicle, and only one inflator 50 is provided.
The above configuration is applied not only to the first embodiment of the present invention but also to other embodiments of the present invention.

The first embodiment of the present invention further has the following configuration.
As shown in FIGS. 2 and 3, the airbag main body 30 is directed downward from the upper end of the airbag main body 30 on both sides of at least a part between the plurality of first mounting portions 31 a (between the vehicle longitudinal directions). A loop portion 35a is formed by inserting a cut 36a and folding the portion between the cut 36a downward and bonding (sewing, welding, etc.) to a portion of the airbag body 30 that is not folded.

  The reinforcing member 40 is inserted into the loop portion 35 a and attached to the airbag body 30. Since the reinforcing member 40 is inserted into the loop portion 35 a and attached to the airbag body 30, the reinforcing member 40 is attached to the upper end portion of the airbag body 30 or in the vicinity thereof. The reinforcing member 40 does not move in the extending direction of the reinforcing member 40 and the direction orthogonal to the extending direction of the reinforcing member 40 in the loop portion 35a or is negligible even if it moves (substantially immovable). Have been). The reinforcing member 40 may be substantially immovable by reducing the diameter of the loop portion 35a and increasing the frictional force with the reinforcing member 40 in the loop portion 35a. It may be made substantially immovable by utilizing the adhesive force of the silicon coat, or may be made almost immovable by other methods.

Here, the operation of the first embodiment of the present invention will be described.
In the first embodiment of the present invention, since the reinforcing member 40 is provided, the bending rigidity of the airbag body 30 is improved as compared with the case where the reinforcing member 40 is not provided. Therefore, compared with the case where the reinforcing member 40 is not provided, it is possible to suppress the airbag body 30 from being violated (blurred) due to the reaction to which the gas is supplied when the airbag body 30 is deployed and inflated.

  Since the reinforcing member 40 extends over at least two of the plurality of component mounting protrusions 61, when the airbag body 30 is violated (blurred), the reinforcing member 40 directly or directly contacts the airbag body 30. It hits the part mounting projection 61 straddling it. Therefore, it is possible to prevent the airbag main body 30 from entering between the plurality of component mounting projections 61 over which the reinforcing body 40 straddles due to the airbag main body 30 being violated. Therefore, it is possible to suppress the narrowing of the cross-sectional area of the gas flow path 32 as compared with the conventional case, and as a result, the internal pressure of the airbag body 30 increases and damage to the airbag body 30 such as misalignment occurs. Can be suppressed.

  Since the reinforcing member 40 is disposed in the vicinity of the gas flow path 32, the rigidity of the airbag body 30 in the vicinity of the gas flow path 32 is improved as compared with the case where the reinforcing member is disposed away from the gas flow path. The air bag body 30 can be prevented from being violated (blurred) due to the reaction that the gas is supplied to when the air bag body 30 is inflated and deployed.

  Since the reinforcing member 40 is attached to the airbag main body 30 using a part of the airbag main body 30, a part different from the airbag main body 30 is newly used to attach the reinforcing member 40 to the airbag main body 30. This is not necessary, and the number of parts and materials can be reduced compared to the case where a part different from the airbag body is newly used to attach the reinforcing member to the airbag body.

In the first embodiment of the present invention, the case where the plurality of component mounting projections 61 provided on the roof side rail 60 is an assist grip mounting bracket or the like has been described. It may be a cut-and-raised portion for contacting the reinforcing member 40 provided to suppress the rampage.
The above operation is applied not only to the first embodiment of the present invention but also to other embodiments of the present invention.

In the first embodiment of the present invention, the following actions are further provided.
The airbag main body 30 includes a loop portion 35a formed by forming a cut 36a on both sides of at least a part between the plurality of first mounting portions 31a and folding back a portion between the cut 36a. Since the reinforcing member 40 is inserted into the loop portion 35a and attached to the airbag main body 30, the reinforcing member 40 can be supported by utilizing a portion that has been conventionally cut off (removed) between the plurality of first attaching portions 31a. . For this reason, the material can be used more effectively than in the case where the portion that has been cut off (removed) between the plurality of first mounting portions 31a is not used.

[Example 2] (FIGS. 4 and 5)
Next, parts unique to the second embodiment of the present invention will be described.
The airbag body 30 includes a loop portion 35b formed in a bag weave at the upper end portion or in the vicinity thereof and extending in the vehicle front-rear direction. The loop portion 35b may be open at both ends, or may be open only at one end. The reinforcing member 40 is inserted into the loop portion 35 b and attached to the airbag body 30. Since the reinforcing member 40 is inserted into the loop portion 35b and attached to the airbag body 30, the reinforcing member 40 is attached to the upper end portion of the airbag body 30 or in the vicinity thereof. The reinforcing member 40 does not move in the extending direction of the reinforcing member 40 and the direction orthogonal to the extending direction of the reinforcing member 40 in the loop portion 35b or is negligible even if it moves (substantially immovable). Have been). The reinforcing member 40 may be substantially immovable by reducing the diameter of the loop portion 35b and increasing the frictional force with the reinforcing member 40 in the loop 32b, and is applied to the airbag body 30. It may be made substantially immovable by using the adhesive force of the silicon coat, or may be made almost immovable by other methods.

Here, the operation of the second embodiment of the present invention will be described.
In the second embodiment of the present invention, the airbag main body 30 includes a loop portion 35b formed by bag weaving at or near the upper end portion, and the reinforcing member 40 is inserted into the loop portion 35b of the airbag main body 30 to provide air. Since it is attached to the bag body 30, stitching or the like for attaching the reinforcing member 40 to the airbag body 30 is unnecessary. Therefore, it is possible to reduce the number of man-hours for attaching the reinforcing member 40 to the airbag body 30 as compared with the case where stitching or the like is required.

[Example 3] (FIGS. 6 and 7)
Next, parts unique to the third embodiment of the present invention will be described.
The airbag body 30 has cuts 36b and cuts 36b on both sides of at least a part between the plurality of first mounting portions 31a (between the vehicle longitudinal direction) from the upper end of the airbag body 30 downward. A loop portion 35c is formed by folding the intermediate portion (the portion indicated by the two-dot chain line in FIG. 6) downward and bonding (sewing, welding, etc.) to a portion of the airbag body 30 that is not folded.

  The reinforcing member 40 includes a through hole 41 penetrating in a direction perpendicular to the vehicle front-rear direction in part of the vehicle front-rear direction. The reinforcing member 40 is attached to the airbag main body 30 such that a folded portion for forming the loop portion 35 c of the airbag main body 30 passes through the through hole 41. The length in the vehicle front-rear direction of the through hole 41 is approximately the same as the length in the vehicle front-rear direction of the folded portion of the airbag main body 40 that is inserted through the through hole 41. The reinforcing member 40 is attached to the airbag main body 30 by inserting the folded portion for forming the loop portion 35 c of the airbag main body 30 through the through hole 41, so that the reinforcing member 40 has the upper end of the airbag main body 30. Attached to or near the part. The reinforcing member 40 does not move in the extending direction of the reinforcing member 40 and the direction orthogonal to the extending direction of the reinforcing member 40 in the loop portion 35c or is negligible even if it moves (is substantially immovable). Have been).

Here, the operation of the third embodiment of the present invention will be described.
In the third embodiment of the present invention, the airbag body 30 is formed by forming a cut 36b on both sides of at least a part between the plurality of first attachment portions 31a and folding the portion between the cuts 36b downward. The reinforcing member 40 is provided with a through hole 41, and the reinforcing member 40 is attached to the airbag body 30 by inserting a folded portion for forming the loop portion 35c through the through hole 41. Therefore, the reinforcing member 40 can be supported using the portion that has been cut off (removed) between the plurality of first mounting portions 31a. Therefore, the material can be used more effectively than in the case where the portion that has been conventionally cut off (removed) between the plurality of first mounting portions is not used. Further, since the folded portion for forming the loop portion 35 c of the airbag main body 30 passes through the through hole 41 of the reinforcing member 40, the reinforcing member 40 is displaced in the vehicle longitudinal direction with respect to the airbag main body 30. This can be suppressed.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic perspective view of the head protection airbag apparatus of Example 1 of this invention, and its vicinity. 1A is a perspective view of an airbag main body before forming a loop portion, and FIG. 1B is an exploded perspective view of the airbag main body and a reinforcing member after the loop portion is formed. FIG. It is the sectional view on the AA line of FIG. It is a disassembled perspective view of the airbag main body and reinforcement member of the head protection airbag apparatus of Example 2 of this invention. It is the BB sectional view taken on the line of FIG. It is a perspective view of the airbag main body and reinforcement member of the head protection airbag apparatus of Example 3 of this invention. It is CC sectional view taken on the line of FIG. It is a partial front view of the airbag main body which shows the state in which the airbag main body entered between the adjacent component attachment protrusions of the conventional head protection airbag device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Head protection airbag apparatus 20 Airbag 30 Airbag main body 31 Attachment part 31a 1st attachment part 31b 2nd attachment part 31c Strap 32 Gas flow path 32a 1st gas flow path 32b 2nd gas flow path 33 Cell 33a First cell 33b Second cell 33c Third cell 34 Closing portions 35a, 35b, 35c Loop portions 36a, 36b Cut 40 Reinforcing member 41 Through hole 50 Inflator 51 Diffuser pipe 60 Roof side rail 61 Component mounting projection 62 A pillar 63 C pillar

Claims (5)

An airbag body having an attachment portion attached to the roof side rail of the vehicle;
A reinforcing member that extends in the vehicle front-rear direction and is attached to the airbag body and has higher rigidity than the airbag body;
A head protection airbag device comprising:
The roof side rail is provided with a plurality of component mounting projections in the vehicle front-rear direction, and the reinforcing member is at least two of the plurality of component mounting projections below the plurality of component mounting projections. A head protection airbag device extending over the above. The airbag main body includes a gas flow path extending in the vehicle front-rear direction when deployed, and a plurality of cells positioned below the gas flow path and provided in the vehicle front-rear direction,
The head protection airbag device according to claim 1, wherein the reinforcing member is disposed in proximity to the gas flow path. A plurality of mounting portions of the airbag body are provided,
The airbag main body has a cut from the upper end of the airbag main body to the lower side on at least a part of both sides between the plurality of attachment portions, and the portion between the cuts is folded downward to form the airbag. It has a loop part formed by bonding to the unfolded part of the main body,
The head protection airbag device according to claim 1 or 2, wherein the reinforcing member is inserted into a loop portion of the airbag body and attached to the airbag body. The airbag body includes a loop portion formed in a bag weave at the upper end portion or in the vicinity thereof and extending in the vehicle front-rear direction,
The head protection airbag device according to claim 1 or 2, wherein the reinforcing member is inserted into a loop portion of the airbag body and attached to the airbag body. A plurality of mounting portions of the airbag body are provided,
The airbag main body has a cut from the upper end of the airbag main body to the lower side on at least a part of both sides between the plurality of attachment portions, and the portion between the cuts is folded downward to form the airbag. It has a loop part formed by bonding to the unfolded part of the main body,
The reinforcing member includes a through-hole penetrating in a direction orthogonal to the vehicle front-rear direction in a part of the vehicle front-rear direction,
3. The head protection airbag according to claim 1, wherein the reinforcing member is attached to the inner tube when a folded portion for forming the loop portion of the inner tube passes through the through hole. apparatus.

Images