JP5990156B2 - Curtain airbag device - Google Patents

Description

  The present invention relates to a curtain airbag device provided with a cushion member that inflates and deploys along a side surface in a vehicle compartment for the purpose of protecting passengers at the time of a side collision or rollover (rollover) of a vehicle.

  Modern vehicles are almost equipped with airbags as standard. An airbag is a safety device that operates in an emergency such as a vehicle collision, and inflates and deploys with gas pressure to receive and protect an occupant. There are various types of airbags depending on the installation location and application. For example, a front airbag is provided in the center of the steering wheel in order to protect the driver from collisions in the front-rear direction. In addition, a curtain airbag that inflates and deploys along the side window is provided in the vicinity of the ceiling of the wall portion in order to protect the occupant from a side collision and subsequent rollover (rollover).

  The cushion member of the curtain airbag has a large shape covering a side window or the like on the side wall of the vehicle body, and is mounted on the upper side of the vehicle body side wall in a slender storage form wound or folded from below. Such a curtain airbag may be provided with a resin cover member, a protector, or the like for the purpose of holding the storage form or performing smooth inflation and deployment in a target direction (for example, Patent Document 1). . These cover members and the like have a shape along a part of the cushion member in the storage form, the inflator, and the like, and mainly cover the side wall side of the cushion member and the inflator. By providing the cover member or the like, the cushion member can obtain a reaction force from the cover member or the like when inflated and deployed, and can be smoothly deployed in the target direction. On the other hand, since the useless behavior such as the cushion member trying to expand in a direction other than the target direction is suppressed, the cushion member can also be prevented from interfering with other members on the side of the vehicle body.

JP 2011-218994 A

  As described above, since the cover member plays a role of inflating and deploying the cushion member in the target direction, the cover member may receive a large load when the cushion member is inflated and deployed. In this case, it is desirable that the cover member is fixed to the side wall of the vehicle body so that the posture does not move. However, the space that can be attached to the upper portion of the side wall of the vehicle body on which the curtain airbag is mounted, specifically, the space near the side rail inside the roof trim, is very limited. Furthermore, a compact and low-cost configuration is also desired, and it is not easy to realize these.

  In view of such a problem, the present invention provides a curtain airbag device capable of fixing a cover member to a cushion member or the like with a simple structure and capable of fully receiving the load at the time of inflation and deployment of the cushion portion by the cover portion. It is intended to provide.

  In order to solve the above-described problems, a typical configuration of the curtain airbag device according to the present invention is configured in a bag shape, and is wound or folded to form a slender storage form in the vehicle front-rear direction on the side wall of the vehicle body. A cushion member to be mounted, a cylindrical inflator that supplies a gas for inflation and deployment to the cushion member, the inflator being attached to the upper edge of the cushion member with the longitudinal direction directed in the vehicle front-rear direction, the cushion member, and the inflator A cover member that covers the side wall of the vehicle body, a cover member that has a first inflator holding portion that holds the inflator by bending along at least the outer peripheral surface of the inflator, and a bracket member that fixes the inflator to the side wall of the vehicle body. The first inflator holding portion is curved along the side wall of the vehicle body and is in contact with the first inflator holding portion. A bracket member having a second inflator holding portion, and a fastening member for fastening the inflator, the first inflator holding portion, and the second inflator holding portion, and the first inflator holding portion of the cover member is held on the inflator side It has the convex part which protruded in the at least one of the surface and the back surface which is the 2nd inflator holding part side, It is characterized by the above-mentioned.

  The cover member is provided with a convex portion that serves as an anti-slip on at least one of the holding surface and the back surface of the first inflator holding surface. The convex portion can prevent the cover member from being displaced with respect to the inflator, the cushion portion, and the bracket member. Therefore, if it is the said structure, even if it is a cover member fixed by the simple structure of being fastened to a bracket member with a fastening member, it can fully support the cushion part which expand | deploys and guides it to a target direction. It becomes possible.

  The cover member further includes a jump base portion that is positioned below the first inflator holding portion, is curved along the storage-type cushion member, and restricts at least a deployment direction when the storage-type cushion member is expanded. Good. This jump base portion is very effective when the cushion portion that expands and deploys toward the passenger compartment gets over the center pillar. And as above-mentioned, since the position shift is prevented by the convex part, the cover member can implement | achieve a jump stand part suitably if it is said cover member.

  A plurality of the convex portions may be provided. Further, the convex portions may be provided at different positions on the holding surface side and the back surface side with respect to the first inflator holding portion. Due to the convex portions having these configurations, it is possible to suitably prevent the displacement of the first inflator holding portion with respect to the inflator and the bracket member.

  The convex portion may be provided at the same position on the holding surface side and the back surface side with respect to the first inflator holding portion. The convex portion having such a configuration can also prevent the first inflator holding portion from being displaced with respect to the inflator and the bracket member.

  The convex portion may include a raised portion that gently rises from at least one of the holding surface and the back surface. The convex portion may include a rib that rises from at least one of the holding surface and the back surface. Also by the convex part of these structures, it becomes possible to prevent suitably the position shift of the 1st inflator holding part with respect to an inflator and a bracket member.

  Said 1st inflator holding | maintenance part may have a return part bent to the opposite side to an inflator in the upper end. With this configuration, even if the first inflator holding part is likely to move downward relative to the second inflator holding part of the bracket member, the return part of the first inflator holding part is above the second inflator holding part. The movement is prevented because it interferes with the edges. Therefore, if it is the said structure, it will become possible to prevent the position shift of a 1st inflator holding | maintenance part and by extension, a cover member.

  The bracket member may include a fixing portion that is positioned below the second inflator holding portion, extends below the cushion portion in the storage form, and is fixed to the vehicle body side wall. The fixing portion can be attached to the side wall of the vehicle body with, for example, a bolt or a clip. In that case, the operation from the vehicle interior side is facilitated by extending downward as compared with the cushion portion in the storage form as described above. Further, even when it is difficult to secure the fixed position above the cushion portion, it is possible to cope with it suitably.

  The fastening member may be a ring-shaped band member. This is because the shape is suitable for fastening the inflator, the first inflator holding part, and the second inflator holding part.

  According to the present invention, it is possible to provide a curtain airbag device that can fix a cover member to a cushion member or the like with a simple structure and that can fully receive a load at the time of inflation and deployment of the cushion portion. It becomes.

It is the figure which illustrated the curtain airbag apparatus concerning embodiment of this invention. It is an enlarged view of the inflator vicinity of Fig.1 (a). FIG. 3 is a perspective view of the vicinity of the inflator of FIG. 2. FIG. 4 is an exploded view of the structure near the inflator of FIG. 3. It is an enlarged view of the 1st inflator holding | maintenance part of the cover member of FIG. It is AA sectional drawing of the curtain airbag apparatus of FIG. It is a figure which illustrates the modification of the convex-shaped part illustrated to Fig.5 (a).

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiment are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

  FIG. 1 is a diagram illustrating a curtain airbag device (airbag 100) according to an embodiment of the present invention. FIG. 1A is a view of the side wall of the vehicle body as viewed from the inside of the vehicle, and illustrates the storage form of the cushion member 102 of the airbag 100. The cushion member 102 is a part that is inflated and deployed to protect the occupant in an emergency, and FIG. 1B illustrates the cushion member 102 being inflated and deployed. In the present application, the expression “upper” indicates the vehicle ceiling direction as viewed from the point of interest, and the expression “lower” indicates the vehicle floor direction as viewed from the point of interest.

  As illustrated in FIG. 1A, the cushion member 102 is folded, wound, or both of them to form a storage configuration that is elongated in the front and rear of the vehicle. It is attached to the side rail 104). Usually, the roof side rail 104 is covered with a roof trim (not shown). That is, the cushion member 102 is housed in a space between the roof side rail 104 and the roof trim, and is not visible from the vehicle compartment where the passenger is present. Therefore, it should be noted that the cushion member 102, which is originally invisible from the vehicle interior, is visualized by omitting the roof trim even if there is an explanation “viewing the cushion member 102 from the vehicle interior” in the text.

  The airbag 100 includes an inflator 108, which is a gas generator, at the center of the upper edge of the cushion member 102. The cushion member 102 is inflated by the pressure of gas supplied from the inflator 108 to restrain the occupant. The inflator 108 employed in this embodiment is of a cylinder type (cylindrical type). Inflators that are currently popular are types that are filled with a gas generating agent and burn it to generate gas, types that are filled with compressed gas and supply gas without generating heat, and There are types including both a gas generating agent and a compressed gas. Any type of inflator 108 can be used.

  In the state of FIG. 1 (a), when a side collision or rollover (rollover) occurs in the vehicle 106, a sensor (not shown) provided in the vehicle 106 first detects an impact, which causes the inflator. A signal is transmitted to 108. By receiving this signal, the inflator 108 is activated, and gas is supplied to the cushion member 102. When the gas from the inflator 108 is received, the cushion member 102 pushes a roof trim (not shown) along the side wall of the vehicle body (such as the side window 110 in FIG. 1A) as illustrated in FIG. Inflates and deploys downward, protecting passengers.

  The cushion member 102 is for a curtain airbag, and has a large shape that can spread along the side surface of the vehicle body by pushing the roof trim. The cushion member 102 is formed into a bag shape by overlapping two base fabrics constituting the surface thereof, sewing and bonding, or spinning using OPW (One-Piece Woven).

  The expansion region of the cushion member 102 is partitioned into a plurality of small rooms (chambers) in consideration of the position where the occupant can come into contact. For example, chambers 114, 116 and the like are provided on the front side of the vehicle for the purpose of receiving passengers in the front seat 112. Further, on the rear side of the vehicle, a chamber 120 and the like are provided on the side of the rear seat 118.

  A plurality of attachment tabs 128 are provided on the upper edge 126 of the cushion member 102 as attachment parts to the vehicle body. The attachment tab 128 has a belt shape and is attached to the roof side rail 104 using a bolt or the like. A string-like strap 130 is provided at the front end of the cushion member 102. The strap 130 is a member that connects the cushion member 102 to the front pillar 105, suppresses the swinging of the cushion member 102 during expansion and deployment, stabilizes the deployment behavior, and additionally applies tension to the cushion member 102 in the vehicle longitudinal direction. Has the function of giving.

  In the present embodiment, the inflator 108 is located above the center pillar 107. In the vicinity of the inflator 108, a cover member 142 (see FIG. 2 and the like) and a bracket member 138, which will be described later, are provided for fixing the inflator 108 and causing the cushion member 102 to expand and deploy in the target direction. It is attached. Hereinafter, the configuration of the cover member 142 and the bracket member 138 will be described in detail.

  FIG. 2 is an enlarged view of the vicinity of the inflator 108 of FIG. The inflator 108 has a gas ejection hole 134 at the tip inserted into an inflator mounting portion 132 illustrated by a broken line provided on the upper edge 126 of the cushion member 102, and the longitudinal direction is directed in the vehicle longitudinal direction substantially parallel to the cushion member 102. Attached. A connector 136 is provided at the rear end of the inflator 108. The connector 136 is electrically connected to the vehicle side to receive an operation signal and the like. Since the inflator 108 has a corresponding weight, the inflator 108 is fastened to a metal and solid bracket member 138 by using the band member 140, and is fixed to the roof side rail 104 via the bracket member 138.

  FIG. 3 is a perspective view of the vicinity of the inflator 108 of FIG. FIG. 3A illustrates the inflator 108 and the like in FIG. 2 as viewed from the vehicle interior side and the vehicle rear side. As illustrated in FIG. 3A, a resin cover member 142 is installed between the bracket member 138 and the cushion member 102. In FIG. 3A, the jump base portion 144 of the cover member 142 is visible below the cushion member 102. The jump base portion 144 reacts so that when the gas is supplied to the cushion member 102, the cushion member 102 overcomes the center pillar 107 (see FIG. 1A) and expands and deploys in a direction toward the vehicle interior side. Has a role to give.

  FIG. 3B illustrates the inflator 108 and the like shown in FIG. 2 as viewed from the outside of the passenger compartment and from the rear of the vehicle. As illustrated in FIG. 3B, a bracket member 138 is attached to the cover member 142 on the side wall of the vehicle body. Specifically, first, the cover member 142 has a first inflator holding portion 146 (see FIG. 4) that contacts the inflator 108, and the bracket member 138 is a second inflator holding portion 148 that contacts the first inflator holding portion 146 of the cover member 142. have. Then, the second inflator holding part 148 is fastened to the inflator 108 by the band member 140, so that the first inflator holding part 146 is sandwiched therebetween. In this embodiment, the inflator 108, the cover member 142, and the bracket member 138 are assembled in this way.

  With reference to FIG. 4, each component near the inflator 108 of FIG. 3 will be further described. FIG. 4 is an exploded view of the structure near the inflator 108 of FIG. The cover member 142 has a first inflator holding portion 146 in the upper portion and a jump base portion 144 in the lower portion. The first inflator holding portion 146 has a curved shape along the outer peripheral surface 109 of the inflator 108, and holds the inflator 108 in contact with the outer peripheral surface 109 of the inflator 108. The jumping base portion 144 has a shape curved continuously along the cushion member 102 in the storage form, continuously below the first inflator holding portion 146. And the jump stand part 144 regulates the deployment direction when the cushion member 102 is inflated. More specifically, the jump base portion 144 covers up to the lower side of the vehicle body side wall of the cushion member 102 in the storage form, thereby causing the cushion member 102 to face toward the vehicle interior side when inflated. The cover member 142 also prevents interference between the cushion member 102 and other members on the side of the vehicle body.

  The bracket member 138 has a second inflator holding portion 148 in the upper portion and a fixing portion 150 in the lower portion. The second inflator holding portion 148 has a curved shape along the vehicle body side wall of the first inflator holding portion 146 of the cover member 142, and holds the inflator 108 together with the first inflator holding portion 146. However, the second inflator holding portion 148 does not necessarily require the function of the present embodiment that holds the inflator 108 together with the first inflator holding portion 146, and is assembled in contact with the first inflator holding portion 146. Just do it. The fixed portion 150 extends obliquely downward from the second inflator holding portion 148 toward the side of the vehicle body side wall, and two holes 154 are provided in the vicinity of the lower end thereof. The fixing portion 150 is fixed to the roof side rail 104 (see FIG. 1A) by using a member such as a bolt or a clip (not shown) in the hole portion 154.

  As illustrated in FIG. 2, the fixing portion 150 extends below the storage-type cushion member 102, and has a hole portion 154 at the position, and the roof side rail 104 (see FIG. 1A). Fixed to. With this configuration, when the airbag 100 is assembled to the vehicle body, the work from the vehicle interior side can be easily performed. Further, even when it is difficult to secure the fixed position above the cushion member 102, it can be suitably assembled to the vehicle body.

  The two band members 140 in FIG. 4 are wound around the inflator 108 from above the second inflator holding portion 148 of the bracket member 138. By this band member 140, the inflator 108, the cover member 142, and the bracket member 138 are fastened together and assembled. The band member 140 is made of a ring-shaped metal, has a high strength, and is configured not to drop off due to pressure or the like when the cushion member 102 is expanded and deployed. In the present embodiment, such a band member 140 is used, but any shape or material can be used as long as the inflator 108, the first inflator holding part 146, and the second inflator holding part 148 can be fastened together.

  As described above, in the airbag 100, the inflator 108, the cover member 142, and the bracket member 138 are assembled with a very simple configuration using the band member 140. In the present embodiment, the first inflator holding portion 146 of the cover member 142 is further devised so that the cover member 142 does not shift in position between the inflator 108 and the bracket member 138.

  FIG. 5 is an enlarged view of the first inflator holding portion 146 of the cover member 142 of FIG. FIG. 5A is an enlarged view of the holding surface 156 that is the surface on the inflator side of the first inflator holding portion 146. As illustrated in FIG. 5A, the holding surface 156 is provided with a plurality of convex portions 158. The convex portion 158 is a fine structure provided so as to protrude into an elliptical spherical shape on the holding surface 156, and serves as an anti-skid that contacts the inflator 108 and generates a frictional force. In addition, in FIG. 5A, although the four convex-shaped parts 158 are illustrated, the number of installation is not restrict | limited, It is also possible to provide fewer or more.

  FIG. 5B is an enlarged view illustrating the back surface 152 of the first inflator holding portion 146 shown in FIG. As illustrated in FIG. 5B, the first inflator holding portion 146 is provided with a plurality of convex portions 160 on the back surface 152. These convex portions 160 are also fine structures provided so as to protrude into an elliptical spherical shape on the back surface 152, and serve as a slip stopper for the second inflator holding portion 148 of the bracket member 138. In addition, in the convex part 160, although six are provided in FIG.5 (b), there is no restriction | limiting in the number of installation.

  In the present embodiment, convex portions 158 and 160 are provided on both the holding surface 156 and the back surface 152 of the first inflator holding portion 146, respectively, to enhance the anti-slip effect. However, the effect of the present invention can be obtained even if only one of the convex portions 158 or 160 is provided, that is, the slip surface is provided only on one of the holding surface 156 and the back surface 152. Whether to provide an anti-skid on both the holding surface 156 and the back surface 152 or an anti-skid on only one surface may be considered for each product.

  6 is a cross-sectional view of the curtain airbag device taken along the line AA in FIG. As illustrated in FIG. 6A, the cover member 142 is sandwiched between the inflator 108 and the second inflator holding portion 148 of the bracket member 138 by fastening the band member 140 (see FIG. 2 and the like). Is done. When the cushion member 102 is inflated and deployed to the cover member 142, a large load is applied particularly to the jump base portion 144.

  FIG. 6B is an enlarged view of the first inflator holding portion 146 of the cover member 142 of FIG. As illustrated in FIG. 6B, the first inflator holding portion 146 is provided with a plurality of convex portions 158 on the holding surface 156 and a plurality of convex portions 160 on the back surface 152. Since the convex portions 158 and 160 serve as a slip stopper, the cover member 142 can be prevented from being displaced with respect to the inflator 108, the cushion member 102, and the bracket member 138. Therefore, even if the cover member 142 is a simple fixing method of fastening the band member 140, the cover member 142 that is inflated and deployed can be fully supported and guided in the target direction.

  The convex portions 158 and 160 are provided at different positions on the holding surface 156 side and the back surface 152 side with respect to the first inflator holding portion 146. With this configuration, it is possible to exert a frictional force at positions different from each other with respect to the inflator 108 and the second inflator holding portion 148 of the bracket member 138, and it is possible to more appropriately prevent the positional deviation.

  However, the convex portions 158 and 160 may be provided at the same position on the holding surface 156 side and the back surface 152 side of the first inflator holding portion 146. Even with such a configuration, it is possible to exhibit the above-described frictional force, and it is possible to prevent displacement of the first inflator holding portion 146.

  Further, the first inflator holding portion 146 has a return portion 162 bent at the upper end thereof in the direction opposite to the inflator 108. The return portion 162 interferes with the upper edge 164 of the second inflator holding portion 148 if the first inflator holding portion 146 is likely to move downward relative to the second inflator holding portion 148 of the bracket member 138. . Therefore, the movement is prevented, and the first inflator holding portion 146 and thus the cover member 142 can be prevented from being displaced.

  As described above, according to this embodiment, the cover member 142 can be fixed to the cushion member 102 or the like with a simple structure using the band member 140, and the cover member 142 is further formed by the convex portions 158 and 160. Thus, the cover member 142, particularly the lower jump stand portion 144, can fully receive the load when the cushion member 102 is inflated and deployed.

(Modification)
FIG. 7 is a diagram illustrating a modification of the convex portion illustrated in FIG. Each of the convex portions described below can be installed on either the holding surface 156 or the back surface 152 of the first inflator holding portion 146. However, as an example, a description will be given of what is installed on the back surface 152.

  FIG. 7A is a diagram illustrating a first modification of the convex portion. As illustrated in FIG. 7A, a plurality of raised portions 170 may be provided as a structure that functions as a convex portion. FIG.7 (b) is the figure which looked at the 1st inflator holding | maintenance part of Fig.7 (a) from the side. As illustrated in FIG. 7B, the raised portion 170 is gently raised from the holding surface 156 and the back surface 152. This raised portion 170 can also serve as a slip stopper for the second inflator holding portion 148 of the bracket member 138 (see FIG. 6B).

  FIG. 7C is a diagram illustrating a second modification of the convex portion. As illustrated in FIG. 7C, a plurality of ribs 172 can be provided as a structure that functions as a convex portion. FIG. 7D is a view of the first inflator holding portion 146 of FIG. 7C viewed from the side. As illustrated in FIG. 7B, the rib 172 rises from the holding surface 156 and the back surface 152 so as to be orthogonal to the holding surface 156 and the back surface 152. The ribs 172 can also serve as a slip stopper for the second inflator holding portion 148 of the bracket member 138 (see FIG. 6B).

  7B and 7D, the ridge 170 or the rib 172 is provided on both the holding surface 156 and the back surface 152. However, the raised portion 170 or the rib 172 may be provided on either the holding surface 156 or the back surface 152.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. However, the embodiments described above are preferred examples of the present invention, and other embodiments can be implemented or performed in various ways. Can be carried out. The invention is not limited to the detailed shape, size, configuration, and the like of the components shown in the accompanying drawings unless otherwise specified in the present specification. In addition, expressions and terms used in the present specification are for the purpose of explanation, and are not limited thereto unless otherwise specified.

  Therefore, it is obvious for those skilled in the art that various changes and modifications can be conceived within the scope of the claims, and these naturally belong to the technical scope of the present invention. It is understood.

  Moreover, in the said embodiment, although demonstrated supposing the case where the airbag 100 concerning this invention is applied to a motor vehicle, it is also possible to apply to an aircraft, a ship, etc. besides a motor vehicle, and the same effect is obtained. Can be obtained.

  INDUSTRIAL APPLICABILITY The present invention can be used for a curtain airbag device provided with a cushion member that inflates and deploys along a side surface in a vehicle compartment for the purpose of protecting an occupant at the time of a vehicle side collision or rollover (rollover).

DESCRIPTION OF SYMBOLS 100 ... Air bag, 102 ... Cushion member, 104 ... Roof side rail, 105 ... Front pillar, 106 ... Vehicle, 107 ... Center pillar, 108 ... Inflator, 109 ... Outer surface, 110 ... Side window, 112 ... Front seat, DESCRIPTION OF SYMBOLS 114 ... Chamber, 118 ... Back seat, 120 ... Chamber, 126 ... Upper edge, 128 ... Mounting tab, 130 ... Strap, 132 ... Inflator mounting part, 134 ... Gas ejection hole, 136 ... Connector, 138 ... Bracket member, 140 ... Band member 142 ... Cover member 144 ... Jump stand portion 146 ... First inflator holding part 148 ... Second inflator holding part 150 ... Fixing part 152 ... Back face 154 ... Hole part 156 ... Holding face 158 ... convex part on the holding surface side, 160 ... convex part on the back side, 162 ... return part, 1 4 ... upper edge of the second inflator holding portion, 170 ... ridge, 172 ... rib

Claims (10)

A cushion member configured in a bag shape and mounted on the side wall of the vehicle body by being wound or folded into a slender storage form in the vehicle front-rear direction,
A cylindrical inflator for supplying a gas for inflation and deployment to the cushion member, the inflator being attached to the upper edge of the cushion member with the longitudinal direction directed in the vehicle longitudinal direction;
A cover member that covers a vehicle body side wall of the cushion member and the inflator, the cover member having a first inflator holding portion that is curved along at least the outer peripheral surface of the inflator and holds the inflator;
A bracket member for fixing the inflator to a vehicle body side wall, the bracket member having a second inflator holding portion that is curved along the vehicle body side wall side of the first inflator holding portion and contacts the first inflator holding portion;
A fastening member for fastening the inflator, the first inflator holding portion and the second inflator holding portion;
With
Wherein the first inflator holding portion of the cover member, the curtain airbag apparatus characterized by having a convex portion protruding each back is the side of the holding surface and the second inflator holding portion is inflator side. A cushion member configured in a bag shape and mounted on the side wall of the vehicle body by being wound or folded into a slender storage form in the vehicle front-rear direction,
A cylindrical inflator for supplying a gas for inflation and deployment to the cushion member, the inflator being attached to the upper edge of the cushion member with the longitudinal direction directed in the vehicle longitudinal direction;
A cover member that covers a vehicle body side wall of the cushion member and the inflator, the cover member having a first inflator holding portion that is curved along at least the outer peripheral surface of the inflator and holds the inflator;
A bracket member for fixing the inflator to a vehicle body side wall, the bracket member having a second inflator holding portion that is curved along the vehicle body side wall side of the first inflator holding portion and contacts the first inflator holding portion;
A fastening member for fastening the inflator, the first inflator holding portion and the second inflator holding portion;
With
The first inflator holding portion of the cover member has a convex portion protruding on at least one of a holding surface on the inflator side and a back surface on the second inflator holding portion side,
The cover member further includes a jump base portion that is positioned below the first inflator holding portion, is curved along the cushion member in the storage form, and restricts at least a deployment direction when the cushion member in the storage form is inflated. A curtain airbag device characterized by that .   The curtain airbag device according to claim 1, wherein a plurality of the convex portions are provided.   4. The curtain air according to claim 1, wherein the convex portions are provided at different positions on the holding surface side and the back surface side with respect to the first inflator holding portion. 5. Bag device.   The curtain air according to any one of claims 1 to 3, wherein the convex portion is provided at the same position on the holding surface side and the back surface side with respect to the first inflator holding portion. Bag device.   The curtain airbag device according to any one of claims 1 to 5, wherein the convex portion includes a raised portion that gently rises from the holding surface and the back surface.   The curtain airbag device according to any one of claims 1 to 6, wherein the convex portion includes a rib rising from the holding surface and the back surface.   The curtain airbag device according to any one of claims 1 to 7, wherein the first inflator holding portion has a return portion bent at an upper end thereof in a direction opposite to the inflator.   2. The bracket member according to claim 1, wherein the bracket member includes a fixing portion that is positioned below the second inflator holding portion and extends below the cushion portion of the storage form and is fixed to the vehicle body side wall. The curtain airbag device according to any one of 8.   The curtain airbag device according to any one of claims 1 to 9, wherein the fastening member is a ring-shaped band member.

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