JP2015016764A - Curtain airbag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curtain airbag device capable of preventing an airbag from being twisted by being rotated in a circumferential direction with respect to a protective cover.SOLUTION: A curtain airbag device AA comprises a fixing tab 110 formed on a surface of the airbag 10 so as to fix the airbag 10 to a roof side rail SL. The airbag 10 has a twist prevention tab 150 for being fixed to a protective cover 20, in a position different from a position where the fixing tab 110 is formed.

Description

  The present invention relates to a curtain airbag device attached to a roof side rail of a vehicle.

  As an airbag device for a vehicle, in order to prevent an occupant's head from crashing into a side window or the like in the event of an accident from the side, an airbag is deployed from the roof side rail of the vehicle in a curtain shape. Are known. Such an airbag device is also referred to as a curtain airbag device.

  In the curtain airbag device, the airbag is attached along the roof side rail while being folded in an elongated shape. Further, a protective cover for protecting the airbag from above is disposed between the airbag and the roof side rail. The protective cover is for preventing the airbag from being damaged by hitting the roof side rail or the like.

  A plurality of attachment tabs (cloth pieces projecting upward) are formed at the upper position in the folded state of the airbag. A mounting plate that protrudes upward is formed at a position corresponding to the mounting tab of the airbag in the protective cover.

  The curtain airbag device is attached to the roof side rail by fixing the airbag attachment tab and the protective cover attachment plate together to the roof side rail (see below). (See Patent Document 1).

  Since the mounting tab is fixed to the protective cover, the airbag is not twisted (rotated along the circumferential direction) at least in a portion where the mounting tab is formed.

JP 2011-31640 A

  On the other hand, the portion of the airbag in which the mounting tab is not formed is not fixed to the protective cover, and thus can rotate along the circumferential direction. In other words, the airbag can be easily twisted in such a portion. The twisting of the airbag is particularly likely to occur when the curtain airbag device is attached to the roof side rail. If the curtain airbag device is attached to the vehicle while the airbag is twisted, the airbag will not be properly deployed in the event of an accident and the head of the occupant cannot be reliably protected. .

  Therefore, in order to prevent twisting of the airbag, it is conceivable to form as many airbag mounting tabs and protective cover mounting plates as possible along the longitudinal direction of the airbag. However, considering that a structure such as an assist grip is disposed near the roof side rail, it is difficult to arrange a large number of mounting plates (and mounting tabs) while avoiding interference with the structure. As a result, the number of fixing points of the airbag to the protective cover is inevitably reduced, and most of the airbag is in a state where it can be easily twisted.

  The present invention has been made in view of such problems, and an object thereof is to provide a curtain airbag device that can prevent the airbag from rotating and twisting in the circumferential direction with respect to the protective cover. There is to do.

  In order to solve the above problems, a curtain airbag device according to the present invention is a curtain airbag device that is attached to a roof side rail of a vehicle, and includes an airbag folded in an elongated state, and the airbag. A protective cover disposed between the roof side rail and the airbag to protect, and a mounting tab formed on the surface of the airbag to secure the airbag to the roof side rail; The airbag has a fixed portion that is fixed to the protective cover at a position different from the position where the mounting tab is formed.

  A curtain airbag device according to the present invention is a safety device attached to a roof side rail of a vehicle, and includes an airbag and a protective cover. The air bag is deployed in a curtain shape from the roof side rail to protect the head of the occupant when an accident occurs from the side. In a normal state, the airbag is folded so as to be elongated, and is arranged so that its longitudinal direction follows the roof side rail.

  The protective cover protects the airbag. The protective cover is disposed between the roof side rail and the airbag. For this reason, when the airbag is deployed, the airbag is prevented from being damaged by hitting the roof side rail or the like.

  A mounting tab is formed on the surface of the airbag. The attachment tab is for fixing the airbag to the roof side rail. In other words, the airbag is fixed by fixing the mounting tab to the roof side rail. Only the mounting tab of the airbag is fixed to the roof side rail.

  The airbag has a fixed portion that is fixed to the protective cover at a position different from the position where the attachment tab is formed. For this reason, the airbag is fixed not only at the attachment tab but also at the fixed portion. The airbag and the protective cover can be fixed to the fixed portion without interfering with a structure (for example, an assist grip) disposed near the roof side rail. For this reason, the position and number of to-be-fixed parts can be designed comparatively freely, and the twist of an airbag can be suppressed by this.

  In the curtain airbag device according to the present invention, it is also preferable that the fixed portion is a piece of cloth having one end fixed to the surface of the airbag.

  In this preferred embodiment, the fixed part is a piece of cloth having one end fixed to the surface of the airbag. Compared with the case where the surface of the airbag is directly fixed to the protective cover (for example, when fixing by adhesion), the configuration for fixing can be simplified.

  Moreover, in the curtain airbag device according to the present invention, a protrusion protruding toward the opposite side of the airbag is formed at a position corresponding to the cloth piece in the protective cover. It is also preferable that an opening to be engaged with the protrusion is formed.

  In this preferable aspect, the protrusion which protrudes toward the opposite side to an airbag is formed in the position corresponding to a cloth piece among protective covers. In addition, the cloth piece is formed with an opening that is locked to the protrusion. By locking the opening formed in the cloth piece, which is the fixed portion of the airbag, to the protrusion of the protective cover, the airbag can be easily and reliably fixed to the protective cover.

  In the curtain airbag device according to the present invention, the protective cover has a mounting plate formed at a position corresponding to the mounting tab, and the mounting tab and the mounting plate are overlapped with each other. It is also preferable to be fixed to the roof side rail.

  In this preferred embodiment, the protective cover is formed with a mounting plate at a position corresponding to the mounting tab of the airbag. The curtain airbag device is fixed to the roof side rail in a state where the attachment tab and the attachment plate are overlapped with each other. Since the airbag and the protective cover are fixed to the roof side rail at the same location (location of the attachment tab), the structure for fixing the curtain airbag device can be simplified.

  In the curtain airbag device according to the present invention, it is also preferable that the protrusion amount of the protrusion is smaller than the protrusion amount of the mounting plate.

  In this preferable aspect, the protrusion amount of the protrusion in the protective cover is smaller than the protrusion amount of the mounting plate. For this reason, it is possible to prevent the protrusion of the protective cover from interfering with the structure arranged near the roof side rail.

  In the curtain airbag device according to the present invention, a plurality of the attachment tabs and the attachment plates are formed along the longitudinal direction of the airbag, and two adjacent ones of the airbags. It is also preferable that at least one fixed part is disposed at a position between the mounting plates.

  In this preferred embodiment, a plurality of attachment tabs and attachment plates are respectively formed along the longitudinal direction of the airbag. Further, at least one fixed portion is disposed at a position between two adjacent mounting plates in the airbag.

  In such a configuration, a plurality of fixing locations (fixed portions and attachment tabs) where the airbag and the protective cover are fixed are arranged along the longitudinal direction of the airbag. Further, the interval between the adjacent fixed portions is relatively small. For this reason, the twist of an airbag can further be suppressed.

  In the curtain airbag device according to the present invention, the position where the fixed portion is arranged in the airbag includes a position near the end of the protective cover along the longitudinal direction of the airbag. It is also preferable.

  In this preferred embodiment, the position of the airbag where the fixed part is disposed includes a position that is near the end of the protective cover along the longitudinal direction of the airbag. In other words, when the to-be-fixed part is arrange | positioned in the several places of an airbag, the place used as the edge part vicinity of a protective cover is included in the said several places. The airbag and the protective cover are fixed at a portion near the end of the protective cover, and the rotation (twisting) of the airbag at the portion is suppressed. For this reason, the twisting of the airbag can occur only outside the protective cover (a portion where the protective cover is not disposed above).

  In other words, it is possible to suppress the twisting of the airbag in the portion that is covered with the protective cover and is difficult to visually recognize. For this reason, it is possible to further prevent the curtain airbag device from being attached to the vehicle while the airbag is twisted.

  ADVANTAGE OF THE INVENTION According to this invention, the curtain airbag apparatus which can prevent that an airbag rotates in the circumferential direction with respect to a protective cover and twists can be provided.

It is a figure which shows the state which attached the curtain airbag apparatus which concerns on one Embodiment of this invention to the vehicle. FIG. 2 is an exploded view for explaining the configuration of the curtain airbag device shown in FIG. 1. It is a figure which expands and shows a part of protective cover among the curtain airbag apparatuses shown in FIG. It is a figure which expands and shows a part of curtain air bag apparatus shown in FIG. It is a figure which expands and shows a part of curtain air bag apparatus which concerns on other embodiment of this invention.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  A curtain airbag device according to an embodiment of the present invention will be described with reference to FIG. FIG. 1A is a view of the curtain airbag device AA attached to the right side in the traveling direction of the vehicle C as viewed from the vehicle interior side. FIG. 1B is a perspective view illustrating a state in which the airbag 10 is deployed by operating the curtain airbag device AA from the state of FIG. In FIG. 1, the x-axis is set with the direction from the front to the rear of the vehicle C as the x direction, the y-axis is set with the direction from the bottom to the top of the vehicle C as the y direction, and The z axis is set with the direction toward the left in the traveling direction as the z direction. In the subsequent drawings, the x axis, the y axis, and the z axis are similarly set.

  The curtain airbag device AA is a device that deploys the airbag 10 in the vicinity of the side window of the vehicle C. Although all the embodiments will be described as a curtain airbag device for the right side in the traveling direction of the vehicle C, the curtain airbag device for the left side in the traveling direction of the vehicle C has a similar and symmetric structure.

  As shown to FIG. 1 (A), curtain airbag apparatus AA is accommodated in the vehicle compartment side surface upper direction. The curtain airbag device AA is attached to the roof side rail SL of the vehicle C. A plurality of pillars are provided in the vehicle C, and are provided in order from the front as an A pillar AP, a B pillar BP, a C pillar CP, and a D pillar DP. The inner sides of the A pillar AP, B pillar BP, C pillar CP, and D pillar DP are covered with a pillar trim formed of resin or the like. In the case of this embodiment, the curtain airbag device AA is provided from the A pillar AP to the D pillar DP.

  The curtain airbag device AA includes an airbag 10, a protective cover 20, and an inflator 30. The airbag 10 is formed into a bag shape by spinning using an OPW (One-Piece Waven). That is, it is not formed into a bag shape by sewing two base fabrics on the front and back, but the airbag 10 which is a bag-like fabric from the beginning is directly formed by spinning.

  The entire surface of the airbag 10 (the entire surface exposed to the outside in the deployed state) is coated with silicon or the like for preventing gas leakage immediately after deployment. For this reason, the internal pressure of the airbag 10 is kept high for a while after deployment.

  In FIG. 1 (A), the airbag 10 is folded (rolled) into a roll and is in an elongated state, and is attached so that its longitudinal direction is along the longitudinal direction (x direction) of the vehicle C. Yes.

  The protective cover 20 is a plate-like cover formed by resin injection molding, and is disposed between the airbag 10 and the roof side rail SL. The protective cover 20 protects the airbag 10 in order to prevent the airbag 10 from being damaged by hitting the roof side rail SL or the like. The protective cover 20 has a role of regulating the deployment direction of the airbag 10 in addition to the role of protecting the airbag 10.

  The protective cover 20 is divided into a plurality along the longitudinal direction of the vehicle C. In the present embodiment, the two protective covers 21 and 22 attached so as to be aligned along the front-rear direction of the vehicle C protect the airbag 10.

  The inflator 30 is a cylinder-type inflator and supplies inflation gas to the airbag 10 from a suitably determined position at the upper end of the airbag 10. When a side collision or rollover (rollover) occurs in the vehicle C, the inflator 30 is configured to operate. Specifically, when a side collision or rollover occurs, a sensor (not shown) provided in the vehicle C senses an impact and transmits an ignition signal to the inflator 30. Then, the explosive in the inflator 30 burns, and the generated inflation gas is supplied to the airbag 10.

  The configuration of the curtain airbag device AA will be further described with reference to FIG. FIG. 2 is an exploded view for explaining the configuration of the curtain airbag device AA. 2, the curtain airbag device AA in the state shown in FIG. 1A, that is, in a state where the airbag 10 is folded long and narrow (a state where the airbag 10 is not deployed) is shown in an exploded manner.

  Five fixing tabs 110 (111 to 115) are attached as mounting tabs to the upper position of the airbag 10 in the elongated folded state (in this embodiment, equal to the upper position in the expanded state). ) Are arranged along the longitudinal direction of the vehicle C. Each fixing tab 110 is a substantially rectangular cloth piece made of the same material as the airbag 10 and is formed integrally with the airbag 10 when the OPW is spun. Reinforcing cloth (not shown) is sewn from the upper part of the airbag 10 to the fixing tab 110 near the lower end of each fixing tab 110. Each fixing tab 110 protrudes upward from the upper edge of the airbag 10. Each fixing tab 110 is arranged so as to be substantially parallel to the front-rear direction (x direction) of the vehicle C. In other words, all the fixing tabs 110 are arranged such that the normal direction thereof is along the z direction.

  Each fixing tab 110 is formed with a through hole HL1 so as to penetrate the substantially center thereof. In the roof side rail SL to which the curtain airbag device AA is attached, insertion holes are formed at positions corresponding to the respective through holes HL1. When the curtain airbag device AA is attached, the resin clips CL are inserted into the through holes HL1 and the insertion holes from the vehicle inner side (in the −z direction) in a state where the through holes HL1 and the insertion holes are overlapped. As a result, each fixing tab 110 is fixed to the roof side rail SL.

  A fixing plate 201 (mounting plate) that protrudes upward is formed at a position corresponding to the fixing tab 112 in the protective cover 21. The fixing plate 201 is a substantially rectangular plate that is slightly larger than the fixing tab 112, and a through hole HL2 is formed so as to penetrate the substantially center thereof. When fixing the fixing tab 112 to the roof side rail SL, the fixing plate 201 is overlapped on the outside (−z direction side) of the fixing tab 112, and the through hole HL1 of the fixing tab 112 and the through hole of the fixing plate 201 are set. The clip CL is inserted from the vehicle inner side (toward the −z direction) so as to penetrate the insertion holes of the HL2 and the roof side rail SL.

  Further, a fixing plate 202 (attachment plate) protruding upward is formed at a position corresponding to the fixing tab 113 in the protective cover 21. The fixing plate 202 is a substantially rectangular plate that is slightly larger than the fixing tab 113, and a through hole HL2 is formed so as to penetrate the substantially center thereof. When fixing the fixing tab 113 to the roof side rail SL, the fixing plate 202 is overlapped on the outside (−z direction side) of the fixing tab 113, and the through hole HL 1 of the fixing tab 113 and the through hole of the fixing plate 202 are set. The clip CL is inserted from the vehicle inner side (toward the −z direction) so as to penetrate the insertion holes of the HL2 and the roof side rail SL.

  Thus, the protective cover 21 is fixed to the roof side rail SL by the clip CL.

  The fixing of the protective cover 22 has the same configuration. A fixing plate 221 (attachment plate) protruding upward is formed at a position corresponding to the fixing tab 114 in the protective cover 22. The fixing plate 221 is a substantially rectangular plate that is slightly larger than the fixing tab 114, and a through hole HL2 is formed through the fixing plate 221. When the fixing tab 114 is fixed to the roof side rail SL, the fixing plate 221 is overlapped on the outside (−z direction side) of the fixing tab 114, and the through hole HL1 of the fixing tab 114 and the through hole of the fixing plate 221 are set. The clip CL is inserted from the vehicle inner side (toward the −z direction) so as to penetrate the insertion holes of the HL2 and the roof side rail SL.

  Thus, the protective cover 22 is also fixed to the roof side rail SL by the clip CL.

  An inflation gas introduction part 120 is formed on the rear side of the fixing tab 113 arranged at a position substantially at the center in the front-rear direction in the upper part of the airbag 10. The introduction part 120 is a cylindrical cloth piece made of the same material as the airbag 10 and is formed integrally with the airbag 10 when OPW is spun. The introduction part 120 protrudes upward from the upper edge part of the airbag 10. The cylindrical introduction portion 120 communicates with the interior of the airbag 10. An opening 121 is formed at the upper end of the introduction part 120.

  The tip of the inflator 30, that is, the portion on the injection port 31 side of the inflation gas is inserted from the opening 121 toward the inside of the introduction portion 120. The space between the outer peripheral surface of the inflator 30 and the inner surface of the introduction portion 120 is hermetically sealed. For this reason, when the inflation gas is injected from the inflator 30, almost all of the inflation gas is supplied to the inside of the airbag 10 without flowing out to the outside.

  The protective cover 21 and the protective cover 22 are separated from each other. The introduction part 120 and the inflator 30 are disposed between the protective cover 21 and the protective cover 22.

  A twist prevention tab 150 is formed at a position between the fixing tab 111 and the fixing tab 112 in the upper portion of the airbag 10. The twist prevention tab 150 is a substantially rectangular cloth piece made of the same material as the airbag 10 (but not coated with silicon coating), and is integrally formed with the airbag 10 at the time of OPW spinning. Yes. Before the airbag 10 is fixed to the protective cover 20, the twist prevention tab 150 protrudes upward from the upper edge portion of the airbag 10. The twist prevention tab 150 is disposed so as to be substantially parallel to the front-rear direction (x direction) of the vehicle C. In other words, the twist prevention tab 150 is disposed such that the normal direction thereof is along the z direction. The twist prevention tab 150 functions as a “fixed portion” of the present invention.

  On the upper surface side of the protective cover 21, a protrusion 250 that protrudes upward is formed at a position corresponding to the twist prevention tab 150 (position substantially equal to the twist prevention tab 150 along the x direction). FIG. 3 is an enlarged view of a portion in the vicinity of the protrusion 250 in the protective cover 21.

  As shown in FIG. 3, the protrusion 250 is a plate-like protrusion substantially parallel to the z direction. The protrusion 250 has a base portion 251 that is a lower portion and a widened portion 252 that is an upper portion. The width of the widened portion 252 along the z direction is larger than the width of the base portion 251 along the z direction. An end portion on the z direction side of the widened portion 252 protrudes further from the end portion on the z direction side of the base portion 251 in the z direction. The −z direction side end portion of the widened portion 252 protrudes further from the −z direction side end portion of the base portion 251 toward the −z direction.

  The airbag 10 is fixed to the protective cover 21 before the curtain airbag device AA is attached to the roof side rail SL. Specifically, the airbag 10 is fixed to the protective cover 21 by engaging the twist prevention tab 150 of the airbag 10 with the protrusion 250 of the protective cover 21.

  This fixing method will be described with reference to FIG. FIG. 4 is an enlarged view of a portion in the vicinity of the protrusion 250 in the curtain airbag device AA. FIG. 4A shows a state immediately after the airbag 10 is arranged below the protective cover 21 (a state in which the airbag 10 is not yet fixed). FIG. 4B shows a state after the twist prevention tab 150 is locked to the protrusion 250 and the airbag 10 is fixed to the protective cover 21.

  As shown in FIG. 4A, the airbag 10 is first disposed below the protective cover 21. At this time, the fixing tab 112 is overlaid on the fixing plate 201, and the fixing tab 113 is overlaid on the fixing plate 202.

  An opening 151 is formed at a position corresponding to the protrusion 250 (a position substantially equal to the protrusion 250 along the x direction) in the twist prevention tab 150. The opening 151 is formed in a slit shape extending along the y direction. The length of the opening 151 along the y direction is substantially equal to the length of the widened portion 252 along the z direction. Further, the position where the opening 151 is formed is a position that substantially overlaps the entire upper end surface of the widened portion 252 when the torsion prevention tab 150 is tilted toward the vehicle exterior from the state shown in FIG. ing.

  Thereafter, as shown in FIG. 4B, the protrusion 250 is inserted into the opening 151 of the twist prevention tab 150 while the twist prevention tab 150 is tilted toward the vehicle exterior side. The torsion prevention tab 150 is caught by the widened portion 252 protruding on both sides along the z-axis and is locked to the protrusion 250. As a result, the twist prevention tab 150 is fixed to the protective cover 21. In other words, at the position of the twist prevention tab 150, the airbag 10 is fixed to the protective cover 21, and the twist of the airbag 10 at the position is suppressed.

  In this manner, the airbag 10 is fixed to the protective cover 21 not only at the fixing tabs 112 and 113 but also at the position of the twist preventing tab 150. The protrusion amount (height) of the protrusion 250 along the y direction is smaller than the protrusion amount of the fixing plates 201 and 202 along the y direction. For this reason, the airbag 10 and the protective cover 21 can be fixed by the twist prevention tab 150 without interfering with a structure (for example, an assist grip) disposed near the roof side rail SL. . Accordingly, it is possible to design the position and number of the twist prevention tabs 150 relatively freely, thereby suppressing the twist of the airbag 10.

  In the present embodiment, a portion that suppresses twisting of the airbag 10 by forming the twist prevention tab 150 and the protrusion 250 (hereinafter, also referred to as “twist suppression portion”) is defined as a fixing tab 111 and a fixing tab 112. It is arranged only at the position between. In other words, the torsion suppressing portion is disposed only in the vicinity of the front end portion of the protective cover 21.

  However, the position of the twist suppressing portion is not limited to the above position. The twist suppressing portion can be arranged at various positions in consideration of the length of the airbag 10 and the shape of the protective cover 20. For example, at least one twist suppressing unit may be arranged at a position between two adjacent fixing plates. If the twist suppressing portions are arranged in this manner, the number of portions of the airbag 10 where twisting is suppressed increases, and the interval between them can be narrowed. As a result, the twist of the airbag 10 can be further suppressed.

  Moreover, it is good also as arrange | positioning the twist suppression part in all the positions used as the vicinity of the edge part (edge part along the front-back direction of the vehicle C) of each protective cover 21 and 22. FIG.

  In the case of such a configuration, the rotation (twist) of the airbag 10 is suppressed in all of the portions near the ends of the protective covers 21 and 22. As a result, the airbag 10 can be twisted only outside the protective cover 20 (a portion where the protective cover 20 is not disposed above).

  In other words, the airbag 10 can be prevented from being twisted in a portion that is covered with the protective cover 20 and is difficult to visually recognize. For this reason, it is possible to further prevent the curtain airbag device AA from being attached to the vehicle C while the airbag 10 is twisted.

  FIG. 5 shows an example of a curtain airbag device AA1 according to another embodiment of the present invention. The curtain airbag device AA1 differs from the curtain airbag device AA only in that the adhesive tape TP is wound from the outside at the position where the twist prevention tab 150 is formed. The adhesive tape TP is wound with its adhesive surface facing inward. For this reason, the airbag 10 and the protective cover 20 are both adhesively fixed by the adhesive tape TP.

  By winding the adhesive tape TP in this way, the airbag 10 and the protective cover 20 can be more firmly fixed at the twist suppression position.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but can be changed as appropriate. Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  For example, in the above-described embodiment, the fixing tab 100, the inflation gas introduction portion 120, and the twist prevention tab 150 are integrally formed with the airbag 10 during OPW weaving. However, these may be formed as separate parts and sewn to the airbag 10.

AA, AA1: Curtain airbag device CL: Clip 10: Airbag HL1: Through hole 110 (111, 112, 113, 114, 115): Fixing tab (mounting tab)
120: introduction part 121: opening 150: twist prevention tab 151: opening TP: adhesive tape 20 (21, 22): protective cover 201, 202, 221: fixing plate (mounting plate)
250: Protrusion 251: Base portion 252: Widened portion HL2: Through hole 30: Inflator 31: Injection port C: Vehicle AP, BP, CP, DP: Pillar SL: Roof side rail

Claims (7)

A curtain airbag device attached to a roof side rail of a vehicle,
An airbag folded into an elongated state;
A protective cover disposed between the roof side rail and the airbag to protect the airbag;
A mounting tab formed on a surface of the airbag for fixing the airbag to the roof side rail;
The curtain airbag device according to claim 1, wherein the airbag has a fixed portion that is fixed to the protective cover at a position different from a position where the mounting tab is formed.   The curtain airbag device according to claim 1, wherein the fixed portion is a piece of cloth having one end fixed to a surface of the airbag.   A protrusion that protrudes toward the opposite side of the airbag is formed at a position corresponding to the cloth piece in the protective cover, and an opening that is engaged with the protrusion is formed in the cloth piece. The curtain airbag device according to claim 2, wherein the curtain airbag device is provided. The protective cover is formed with a mounting plate at a position corresponding to the mounting tab,
The curtain airbag device according to any one of claims 1 to 3, wherein the attachment tab and the attachment plate are fixed to the roof side rail in a state where the attachment tab and the attachment plate are overlapped with each other.   The curtain airbag device according to claim 3, wherein the protrusion amount of the protrusion is smaller than the protrusion amount of the mounting plate. Each of the mounting tab and the mounting plate is formed along the longitudinal direction of the airbag,
The at least one said to-be-fixed part is arrange | positioned in the position which becomes between the two said adjacent attachment plates among the said airbags, The Claim 4 or 5 characterized by the above-mentioned. Curtain airbag device.   The position at which the fixed portion is disposed in the airbag includes a position in the vicinity of an end of the protective cover along a longitudinal direction of the airbag. The curtain airbag device according to any one of 1 to 6.

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