JP2020059292A - Side airbag device - Google Patents

Abstract

To provide a side airbag device capable of suppressing the contact of a webbing with a fixing bracket.SOLUTION: An side airbag device includes: an airbag; an inflator 3 which supplies gas into the airbag; a base member 4 which stores the airbag and the inflator 3, and is fixed to a vehicle body; a fixed bracket 100 which is fixed to the base member 4, and to which the inflator 3 is fixed; a webbing 5 which regulates a deploying direction of the airbag; and a webbing bracket 200 which is fixed to the fixing bracket 100, and to which a webbing 5 is attached. The fixing bracket 100 has a bracket body 110, and a projecting portion 120 which projects out from the bracket body 110 toward the webbing bracket 200, and contacts with the webbing bracket 200.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a side airbag device.

  As a side airbag device, for example, in Patent Document 1, an airbag, an inflator for injecting gas into the airbag, a fixing bracket (fixing plate) to which the inflator is fixed, and a deployment direction of the airbag are restricted. There is disclosed a cloth provided with a cloth cloth and a cloth cloth bracket (case) having a hole with which an engaging portion provided at an end portion of the cloth cloth engages.

JP, 2005-214333, A

  By the way, in the prior art, the webbing may contact the edge of the fixed bracket.

Therefore, it is an object of the present invention to provide a side airbag device that can prevent the webbing from contacting the fixed bracket.
Another object is to make the side airbag device compact.
Another object is to suppress deformation of the fixing bracket when the airbag is deployed.
Another object is to improve the mounting rigidity of the inflator.
Moreover, it aims at suppressing that a fixed bracket and a vehicle body contact.

  In order to achieve the above-mentioned object, a side airbag device of the present invention is an airbag, an inflator for supplying gas into the airbag, a base member that houses the airbag and the inflator, and is fixed to a vehicle body. A fixing bracket that is fixed to the base member and to which the inflator is fixed, a force cloth that regulates the deployment direction of the airbag, and a force that is fixed to the fixing bracket and that attaches the force cloth. A cloth bracket is provided, and the fixed bracket includes a bracket body and a convex portion that projects from the bracket body toward the power cloth bracket and contacts the power cloth bracket.

  According to such a configuration, a gap is formed between the bracket body of the fixed bracket and the power cloth bracket by the convex portion, so that the power cloth can be prevented from coming into contact with the fixed bracket.

  In the side airbag device described above, the webbing bracket may be arranged between the inflator and the fixing bracket.

  According to this, since the bracelet bracket can be arranged in a state of being housed in the base member together with the inflator and the airbag, the side airbag device can be made compact.

  In the side airbag device described above, at least two convex portions may be provided.

  According to this, the power cloth bracket can be stably supported by the plurality of convex portions. Thus, the gap between the bracket body of the fixed bracket and the power cloth bracket can be stably ensured, so that the power cloth can be further prevented from coming into contact with the fixed bracket.

  In the side airbag device described above, the protrusion may be circular when viewed from the direction in which the protrusion protrudes.

  According to this, the rigidity around the convex portion of the fixed bracket can be effectively improved. This can prevent the fixing bracket from being deformed when the airbag is deployed.

  In the side airbag device described above, a through hole through which a bolt for fixing the inflator to the fixing bracket is inserted may be formed in the convex portion.

  According to this, the inflator can be fixed to the portion (convex portion) where the rigidity of the fixing bracket is improved. This can improve the mounting rigidity of the inflator.

  In the side airbag device described above, the force cloth bracket is arranged between the inflator and the fixing bracket, and a through hole through which the bolt is inserted is formed at a portion where the convex portion contacts. be able to.

  According to this, since the inflator can be fixed to the portion where the fixed bracket and the bracing cloth bracket overlap, the mounting rigidity of the inflator can be further improved.

  In the side airbag device described above, the bracket main body may have a rear flange at a rear edge portion that is bent toward the inside or the outside in the left-right direction of the vehicle.

  According to this, the rigidity of the fixed bracket can be improved. This can prevent the fixing bracket from being deformed when the airbag is deployed.

  In the side airbag device described above, the power cloth bracket is arranged on one side in the left-right direction of the rear flange, and the rear flange is bent toward the side opposite to the side on which the power cloth bracket is arranged. Can be configured.

  According to this, it is possible to suppress contact between the rear flange and the bracing bracket. As a result, the convex portion and the power cloth bracket are in stable contact with each other, so that the gap between the bracket body of the fixed bracket and the power cloth bracket can be stably ensured, and the power cloth is in contact with the fixed bracket. Can be effectively suppressed.

  In the side airbag device described above, the bracket body may have a lower flange at a lower edge portion that is bent inward or outward in the left-right direction of the vehicle.

  According to this, the rigidity of the fixed bracket can be improved. This can prevent the fixing bracket from being deformed when the airbag is deployed.

  In the side airbag device described above, the lower flange may be configured to be bent inward in the left-right direction of the vehicle.

  According to this, it is possible to suppress contact between the lower flange of the fixed bracket and the vehicle body.

  According to the present invention, it is possible to prevent the webbing from contacting the fixed bracket.

  Further, by disposing the bracelet bracket between the inflator and the fixed bracket, the side airbag device can be made compact.

  Further, by providing at least two convex portions, it is possible to further prevent the webbing from coming into contact with the fixing bracket.

  Further, by making the convex portion circular when viewed from the protruding direction, it is possible to suppress deformation of the fixing bracket when the airbag is deployed.

  Further, by forming a through hole through which a bolt for fixing the inflator is inserted in the convex portion, it is possible to improve the mounting rigidity of the inflator.

  Further, by disposing the force cloth bracket between the inflator and the fixed bracket and forming the through hole into which the bolt is inserted at the portion where the convex portion contacts, the mounting rigidity of the inflator can be further improved.

  Further, by providing the rear flange on the bracket body, it is possible to prevent the fixed bracket from being deformed when the airbag is deployed.

  Further, since the rear flange is bent toward the side opposite to the side in which the power cloth bracket is arranged in the left-right direction, it is possible to effectively prevent the power cloth from contacting the fixed bracket.

  Further, by providing the lower flange on the bracket body, it is possible to prevent the fixed bracket from being deformed when the airbag is deployed.

  Further, since the lower flange is bent inward in the left-right direction of the vehicle, contact between the lower flange of the fixing bracket and the vehicle body can be suppressed.

It is the figure which looked at the vehicle in which the side airbag apparatus was provided from the passenger compartment. FIG. 3 is a perspective view of a side panel of a vehicle body to which the side airbag device and the side airbag device are fixed. It is a perspective view of a side airbag device. It is an exploded perspective view of a side airbag device. It is the figure which looked at the fixed bracket from the upper side, and the figure seen from the left-right direction outer side of a vehicle. It is the figure which looked at the bracing bracket from the upper side (a), and the figure seen from the left-right direction outside of a vehicle (b). FIG. 2A is a cross-sectional view showing an overall configuration of the side airbag device and FIG. It is a longitudinal cross-sectional view of an inflator and the like of a side airbag device. It is a perspective view of the fixed bracket which concerns on a modification. It is the figure (a), (b) which looked at the vehicle body fixing part which concerns on a modification from the outer side of the vehicle left-right direction.

Next, an embodiment of the present invention will be described in detail with reference to the drawings as appropriate.
As shown in FIG. 1, the side airbag device 1 according to the embodiment is applied to a rear seat of an automobile and is disposed between a seat S and a side wall BS and a door BD which are a part of a vehicle body.

  The seat S has a seat cushion S1 and a seat back S2, and the seat back S2 is rotatable about its lower end so as to tilt forward. The side airbag device 1 is fixed to the side wall BS and not fixed to the seat back S2. Therefore, although illustration is omitted, when the seat back S2 is tilted forward, the side airbag device 1 is exposed while remaining on the side wall BS. The front surface of the side airbag device 1 is substantially flush with the front surface of the seat back S2, and apparently becomes a part of the seat back S2 when the normal seat S is used.

  In the present embodiment, the side airbag device 1 arranged on the left side of the vehicle (left side of the seat S) will be described. However, a side airbag device having a symmetrical configuration may be provided on the right side of the vehicle. it can. Further, in the present embodiment, unless otherwise specified, the inside and the outside in the left-right direction are based on the vehicle, not the side airbag device 1 itself. That is, the inner side in the left-right direction of the vehicle close to the left-right center of the vehicle is the inner side, and the outer side in the left-right direction of the vehicle far from the left-right center of the vehicle is the outer side. The front and rear and the upper and lower sides are based on the sheet S unless otherwise specified.

As shown in FIG. 2, the side wall BS has a side panel 300 made of a metal plate therein, and the side airbag device 1 is fixed to the side panel 300.
The side panel 300 has, as a mounting portion 310 for fixing the side airbag device 1, a first mounting hole 321 on a first mounting surface 320 facing left and right inward, and a second mounting surface 330 facing the front on a second mounting surface 330. It has a mounting hole 331, and has a third mounting hole 341 on a third mounting surface 340 facing inward and leftward. The third mounting surface 340 is disposed below the first mounting surface 320 and the second mounting surface 330, and is displaced leftward and rightward with respect to the first mounting surface 320. In the side airbag device 1, when the seat back S2 is tilted forward, the front side, the left and right inner sides, and the upper side are exposed, and thus the skin member 7 is covered on each of these surfaces.

As shown in FIG. 3, the side airbag device 1 is configured to include an airbag 2, an inflator 3, a base member 4, a fixing bracket 100, a tie cloth 5, and a tie cloth bracket 200. .
The airbag 2 is a bag-shaped member, and is normally disposed inside the side airbag device 1 in a folded state. The airbag 2 is configured so that gas is supplied to the inside of the airbag 2 to inflate when the host vehicle collides with another vehicle or to collide with another vehicle, and is inflated to the left and right outside of the occupant sitting on the seat S.

  The inflator 3 is a member that supplies gas into the airbag 2. As shown in FIG. 4, the inflator 3 has a columnar inflator body 31 and a bolt 32 provided so as to project from the inflator body 31. A plurality of bolts 32 are provided along the axial center of the inflator body 31, and in the present embodiment, two bolts 32 are arranged vertically. The bolts 32 are bolts for fixing the inflator 3 to the fixing bracket 100, and are fixed to the inflator main body 31 so as to face the axial center of the inflator main body 31, respectively.

  Returning to FIG. 3, the base member 4 is a member that houses the airbag 2 and the inflator 3 and is fixed to the side panel 300 (see FIG. 2) that constitutes the vehicle body. Although not shown in FIG. 3, the base member 4 is covered with a cushion pad 6 (see FIG. 7A), and the outer surface of the cushion pad 6 is covered with the skin member 7. The base member 4 includes a wire frame 10 and a fixing plate 20.

  The wire frame 10 is made of a bent metal rod, and includes an outer frame 11, an inner frame 12 arranged on the left and right sides of the outer frame 11, and a lower frame 13 that connects lower ends of the outer frame 11 and the inner frame 12 to each other. , And an upper frame 14 that connects the upper ends of the outer frame 11 and the inner frame 12 to each other. The base member 4 is configured by connecting the frames 11 to 14 by welding, and an inner space surrounded by the frames 11 to 14 is an accommodation space that accommodates the airbag 2, the inflator 3, and the like.

  The fixing plate 20 is made of a metal plate and is fixed to the upper portion of the outer frame 11 by welding and is fixed to the second fixing portion 21 by welding so as to connect the upper ends of the outer frame 11 and the inner frame 12 to each other. The fixing plate 22 is included. The first fixed plate 21 is arranged so as to face left and right, and the second fixed plate 22 is arranged so as to face forward and backward. A head (not shown) of the bolt 23 is fixed to the first fixing plate 21 by welding on the inner surface on the left and right sides, and the shaft portion is provided so as to protrude from the outer surface on the left and right sides toward the outer side on the left and right sides. The head of the bolt 24 is fixed to the front surface of the second fixing plate 22 by welding, and a shaft portion (not shown) is provided so as to project rearward from the rear surface.

  As shown in FIG. 4, the inner frame 12 of the wire frame 10 is provided with a bracket fixing portion 15 to which the fixing bracket 100 is fixed. The bracket fixing portion 15 is formed in a substantially L-shape having a first extending portion 15A extending vertically and a second extending portion 15B extending rearward from the upper end of the first extending portion 15A.

The fixing bracket 100 is a member to which the inflator 3 is fixed while being fixed to the base member 4, and is made of a metal plate. The fixed bracket 100 has a bracket body 110 and a convex portion 120.
The bracket main body 110 has an outer side portion 111, an inner side portion 112 provided so as to extend from the rear side to the lower side of the outer side portion 111, and a connecting portion 113 that connects the outer side portion 111 and the inner side portion 112.

  As shown in FIG. 5A, the inner portion 112 is arranged so as to be displaced in the left-right direction with respect to the outer portion 111, specifically, the inner portion in the left-right direction, and is connected to the outer portion 111 by the connecting portion 113. With such a configuration, the bracket body 110 of the fixed bracket 100 has a step shape formed between the outer portion 111 and the inner portion 112, so that the rigidity of the fixed bracket 100 can be improved. In addition, the inner portion 112 has a rear flange 131 and a lower flange 132. The rear flange 131 is provided at the rear edge of the inner portion 112 by bending toward the inside of the left and right sides. In other words, the rear flange 131 is bent in the left-right direction toward the side opposite to the side on which the webbing bracket 200 is arranged (see FIG. 7A). On the other hand, the lower flange 132 is provided at the lower edge of the inner portion 112 so as to be bent inward in the left and right directions (see also FIG. 8).

  The connecting portion 113 has a first connecting portion 113A and a second connecting portion 113B. The first connecting portion 113A is a portion that extends left and right to form a step shape between the outer portion 111 and the inner portion 112. On the other hand, the second connecting portion 113B is a portion that extends so as to be positioned on the inner side in the left-right direction from the front to the rear. Since the connecting portion 113 has the first connecting portion 113A and the second connecting portion 113B as described above, it is possible to further form an uneven shape near the step portion formed between the outer portion 111 and the inner portion 112. Therefore, the rigidity of the fixing bracket 100 can be further improved.

  As shown in FIGS. 4 and 5B, the convex portion 120 is a portion that comes into contact with the bracing cloth bracket 200 when the fixed bracket 100 and the bracing cloth bracket 200 are assembled. The convex portion 120 is provided so as to protrude from the outer side portion 111 of the bracket main body 110 to the outside on the left and right, in other words, toward the power cloth bracket 200. In the present embodiment, the two convex portions 120 are provided vertically side by side. In addition, in the present embodiment, the second connection portion 113B is disposed substantially between the two convex portions 120 in the vertical direction. Each protrusion 120 is formed in a circular shape when viewed from the direction in which the protrusion 120 protrudes, specifically, the left-right direction. Further, a through hole 121 into which the bolt 32 provided in the inflator 3 is inserted is formed in each convex portion 120.

  A through hole 140 is formed in the inner portion 112 of the bracket body 110. The through hole 140 is a bolt different from the bolt 32 provided on the inflator 3, and is a hole through which the bolt 81 (see FIG. 3) for fixing the fixing bracket 100 to the side panel 300 of the vehicle body is inserted. . The through hole 140 is arranged behind the through hole 121 formed in the convex portion 120. Further, the through hole 140 is arranged below the through hole 121 of the convex portion 120. That is, the through hole 140 is arranged obliquely below and behind the through hole 121.

  As shown in FIG. 4, in the fixing bracket 100, the front edge portion and the upper edge portion of the outer side portion 111 are attached to the base member 4. Specifically, in the fixing bracket 100, the front edge portion of the outer portion 111 is fixed to the first extending portion 15A of the bracket fixing portion 15 provided on the base member 4 by welding, and the upper edge portion of the outer portion 111 is fixed to the bracket. It is attached to the base member 4 by being fixed to the second extending portion 15B of the portion 15 by welding (see the welding portion W). As shown in FIG. 8, the fixing bracket 100 is arranged such that the connecting portion 113 of the bracket main body 110 straddles the inner frame 12 (specifically, the bracket fixing portion 15) of the wire frame 10 forming the base member 4 left and right. Has been done. More specifically, in the fixing bracket 100, the outer portion 111 is arranged on the left and right outer sides of the bracket fixing portion 15, the inner portion 112 is arranged on the left and right inner sides of the bracket fixing portion 15, and a connection connecting the outer portion 111 and the inner portion 112. The portion 113 is arranged so as to intersect the bracket fixing portion 15.

  As shown in FIG. 7A, the webbing 5 is a member that restricts the deployment direction of the airbag 2, and is arranged so as to surround the airbag 2. In the present embodiment, the webbing 5 includes an outer webbing 51 as a first webbing and an inner webbing 52 as a second webbing. A front end portion of each of the outer sack cloth 51 and the inner sack cloth 52 is coupled to the outer skin member 7, and functions to assist in tearing the cushion pad 6 when the airbag 2 is deployed. Further, each of the outer strength cloth 51 and the inner strength cloth 52 has ring portions 51A and 52A that are open at the top and bottom at the rear end.

  As shown in FIG. 4, the webbing bracket 200 is a member that is fixed to the base member 4 and to which the webbing 5 is attached, and is made of a metal plate. Specifically, the webbing bracket 200 is fixed to the fixed bracket 100 fixed to the base member 4, and thereby fixed to the base member 4 via the fixed bracket 100. In the present embodiment, the power cloth bracket 200 is arranged between the inflator 3 and the fixed bracket 100. Furthermore, the force cloth bracket 200 is arranged on one side in the left-right direction of the rear flange 131 provided on the fixed bracket 100, specifically, on the left-right outer side. The bracelet bracket 200 includes a main body 210 and a vehicle body fixing portion 220.

The main body part 210 has a power cloth attachment part 211 as a first part and a connection part 212 as a second part.
The force cloth attachment portion 211 is a portion to which the force cloth 5 is attached, and is arranged adjacent to the upper side of the vehicle body fixing portion 220.

  The force cloth attachment portion 211 has a rear slit 230 as a first slit and a front slit 240 as a second slit. The rear slit 230 is an elongated hole penetrating left and right in which the outer power cloth 51 is arranged, and is formed in the rear portion of the power cloth attachment portion 211. Further, the front slit 240 is an elongated hole penetrating to the left and right in which the inner webbing 52 is arranged, and is formed in front of the webbing attachment portion 211, that is, in front of the rear slit 230. The rear slit 230 and the front slit 240 are configured such that one ends thereof are open to the edge portion of the webbing bracket 200.

  Specifically, as shown in FIG. 6B, the rear slit 230 includes a first hole portion 231 extending vertically, a second hole portion 232 extending substantially forward from the lower end portion of the first hole portion 231, and a second hole portion 232. The third hole 233 extends downward from the front end of the hole 232. Then, the lower end of the third hole portion 233 opens to the lower edge portion of the power cloth bracket 200 to form a first insertion port 234 for inserting the outer power cloth 51. Further, the front slit 240 includes a fourth hole portion 241 extending vertically, a fifth hole portion 242 extending rearward from an upper end portion of the fourth hole portion 241, and a sixth hole portion extending upward from a rear end of the fifth hole portion 242. And a hole portion 243. Then, the upper end of the sixth hole portion 243 opens at the upper edge portion of the webbing bracket 200 to form a second insertion port 244 for inserting the inner webbing 52.

  Further, the brace cloth mounting portion 211 has a first mounting portion 251, a second mounting portion 252, and a third mounting portion 253. The first attachment portion 251 is a portion of the power cloth attachment portion 211 on the front side of the rear slit 230 and on the rear side of the front slit 240. More specifically, the first mounting portion 251 is a portion on the front side of the first reference line L1 passing through the rear slit 230 and on the rear side of the second reference line L2 passing through the front slit 240 when viewed in the left-right direction. . In other words, the first mounting portion 251 is a portion between the first reference line L1 and the second reference line L2. The second attachment portion 252 is a portion of the power cloth attachment portion 211 on the front side of the front slit 240. Specifically, the second attachment portion 252 is a portion on the front side of the second reference line L2. The third attachment portion 253 is a portion of the power cloth attachment portion 211 on the rear side of the rear slit 230. Specifically, the third attachment portion 253 is a portion on the rear side of the first reference line L1.

  The first mounting portion 251 and the second mounting portion 252 are formed to be flat and are arranged in the left-right direction. Specifically, the first mounting portion 251 and the second mounting portion 252 are formed such that the left and right inner surfaces are arranged in the same plane. Then, when the fixed bracket 100 and the force cloth bracket 200 are assembled, the first mounting portion 251 and the second mounting portion 252 are in contact with the convex portions 120 of the fixed bracket 100 on the left and right inner surfaces (see FIG. 8). Through holes 251A and 252A, through which the bolts 32 provided in the inflator 3 are inserted, are formed in the first attachment portion 251 and the second attachment portion 252, which are the portions that the protrusion 120 contacts. The through hole 251A is arranged between the third hole portion 233 of the rear slit 230 and the lower end of the fourth hole portion 241 of the front slit 240 in the first mounting portion 251. Further, the through hole 252A is arranged near the corner of the second attachment portion 252 adjacent to the fifth hole portion 242 and the sixth hole portion 243 of the front slit 240.

  Further, as shown in FIG. 7A, the power cloth attachment portion 211 has a front flange 261 and a rear flange 262. The front flange 261 is formed at the front edge portion of the power cloth attachment portion 211, and is bent inward in the left and right directions. In other words, the front flange 261 is bent in the left-right direction toward the side opposite to the side where the airbag 2 is arranged. On the other hand, the rear flange 262 is formed at the rear edge of the power cloth attachment portion 211, and is bent outward in the left and right directions. In other words, the rear flange 262 is bent in the left-right direction toward the side where the airbag 2 is arranged.

  As shown in FIGS. 4 and 6A, the connecting portion 212 is a portion that connects the vehicle body fixing portion 220 and the power cloth attachment portion 211, and is provided between the vehicle body fixing portion 220 and the power cloth attachment portion 211. ing. Specifically, the force cloth attachment portion 211 is disposed in the left-right direction with respect to the vehicle body fixing portion 220, specifically, is displaced to the outer side in the left and right direction, and the connection portion 212 extends left and right and the upper end of the vehicle body fixing portion 220. And the lower end of the power cloth attachment portion 211 are connected. As a result, the power cloth bracket 200 has a stepped shape formed between the vehicle body fixing portion 220 and the power cloth attachment portion 211.

  As shown in FIGS. 4 and 6B, the force cloth attachment portion 211 has a recess 213 at a portion adjacent to the connection portion 212, specifically, at a lower end portion of the third attachment portion 253. . The recess portion 213 is a recess that is recessed toward the inside of the left and right sides, and is open to the outside of the left and right sides and the lower side.

  The vehicle body fixing portion 220 is a portion directly fixed to the side panel 300 (see FIG. 2) forming the vehicle body, and is provided so as to project downward from the rear portion of the main body portion 210. The vehicle body fixing portion 220 is formed behind and below the first insertion port 234 of the rear slit 230. The vehicle body fixing portion 220 has a recess 221. The recessed portion 221 is a portion where the bolt 81 (see FIG. 3) for fixing the vehicle body fixing portion 220 to the side panel 300 is arranged, and is opened at the edge portion of the power cloth bracket 200. More specifically, the recess 221 is formed in a notch shape that is open to the front side and the lower side of the power cloth bracket 200.

  The outer force cloth 51 is configured such that a part of the ring portion 51A is inserted into the rear slit 230 from the first insertion port 234 and the third attachment portion 253 of the force cloth attachment portion 211 is passed through the ring portion 51A. It is attached to 200. On the other hand, the inner webbing 52 is configured such that a part of the ring portion 52A is inserted into the front slit 240 from the second insertion port 244 and the second attachment portion 252 of the webbing attachment portion 211 is passed through the ring portion 52A. It is attached to the cloth bracket 200. It should be noted that the power cloth bracket 200 made of a metal plate may have a resin coating such as nylon coating applied to at least the edge portion thereof so that an unnecessary load is not applied to the power cloth 5 from the edge portion thereof. As an example, the power cloth bracket 200 may be entirely resin-coated.

  As shown in FIG. 8, the webbing bracket 200 is attached to the fixed bracket 100. More specifically, the power cloth bracket 200 and the fixed bracket 100 allow the lower bolt 32 of the inflator 3 to pass through the through hole 251A of the first mounting portion 251 and the through hole 121 of the lower convex portion 120, and also the upper bolt 32. Are passed through the through hole 252A of the second mounting portion 252 and the through hole 121 of the upper convex portion 120, and the nuts 33 are fastened to the bolts 32 from the left and right inner sides of the fixing bracket 100, thereby being fixed to each other. In the bracing bracket 200, both the first attachment portion 251 and the second attachment portion 252, which are portions on both sides of the front slit 240, are fixed to the fixed bracket 100. In the present embodiment, the first mounting portion 251 is an example of “a portion on one side of the second slit”, and the second mounting portion 252 is an example of “a portion on the other side of the second slit”.

  As shown in FIGS. 2 and 3, the side airbag device 1 is attached to a side panel 300 that constitutes a vehicle body. Specifically, in the side airbag device 1, the bolt 23 of the base member 4 is passed through the first mounting hole 321 of the side panel 300, the bolt 24 is passed through the second mounting hole 331, and fastened to a nut (not shown). The base member 4 is fixed to the side panel 300. Further, as shown in FIG. 7B, the bolt 81 is passed through the through hole 140 of the fixed bracket 100, the concave portion 221 of the power cloth bracket 200, and the third mounting hole 341 of the side panel 300, and is fastened to the nut 82. Thus, the fixed bracket 100 and the bracing bracket 200 are fixed to the side panel 300.

  The vehicle body fixing portion 220 of the bracing bracket 200 is disposed between the fixing bracket 100 and the side panel 300, and is fixed to the side panel 300 together with the fixing bracket 100 by the bolt 81 and the nut 82. As shown in FIG. 6 (b), in the bracing bracket 200, both the first mounting portion 251 and the vehicle body fixing portion 220, which are portions on both sides of the rear slit 230, are fixed to the fixing bracket 100. In the present embodiment, the first mounting portion 251 is an example of “a portion on one side of the first slit”, and the vehicle body fixing portion 220 is an example of “a portion on the other side of the first slit”.

  As shown in FIG. 7A, in the side airbag device 1, the airbag 2 is arranged on one side in the left-right direction of the power cloth bracket 200, specifically, on the left and right outside. Further speaking, the airbag 2 is disposed on the left and right outside which is one side in the left and right direction of the front portion of the power cloth bracket 200 including the front flange 261. The outer power cloth 51 is attached so that the ring portion 51A surrounds a part of the third attachment portion 253 of the power cloth bracket 200 including the rear flange 262, and the airbag 2 of the power cloth bracket 200 is arranged. It extends forward through the side. Specifically, the outer cloth 51 extends forward through the left and right outer sides of the inflator 3 and the airbag 2, and the front end portion is joined to the skin member 7. Further, the inner strength cloth 52 is attached so that the ring portion 52A surrounds a part of the second attachment portion 252 including the front flange 261 and extends forward through the left and right inner sides of the airbag 2, with the front end portion being a skin member. It is connected to 7.

  According to the present embodiment described above, since the fixed bracket 100 has the convex portion 120 protruding from the bracket body 110, when the fixed bracket 100 and the power cloth bracket 200 are assembled, the convex portion 120 causes the bracket body of the fixed bracket 100 to be assembled. A gap can be formed between the 110 and the bracing bracket 200. As a result, it is possible to prevent the inner webbing 52 from coming into contact with the fixed bracket 100.

  Further, since the force cloth bracket 200 is arranged between the inflator 3 and the fixed bracket 100, the strength cloth bracket 200 can be arranged in a state of being housed inside the base member 4 together with the inflator 3 and the airbag 2. As a result, the side airbag device 1 can be made compact.

  Further, since the fixed bracket 100 is provided with the two (plural) convex portions 120, the power cloth bracket 200 can be stably supported by the plural convex portions 120. Accordingly, since the gap between the bracket body 110 and the webbing bracket 200 can be stably secured, it is possible to further suppress the inner webbing 52 from coming into contact with the fixed bracket 100.

  Further, since the protrusion 120 is circular when viewed from the left and right direction, the rigidity around the protrusion 120 of the fixed bracket 100 can be effectively improved. This can prevent the fixing bracket 100 from being deformed even if a force is applied when the airbag 2 is deployed.

  Further, since the through hole 121 through which the bolt 32 of the inflator 3 is inserted is formed in the convex portion 120, the inflator 3 can be fixed to the convex portion 120, which is a portion where the rigidity of the fixing bracket 100 is improved. Thereby, the mounting rigidity of the inflator 3 can be improved.

  Further, the force cloth bracket 200 is arranged between the inflator 3 and the fixed bracket 100, and the bolt 32 is inserted into the first mounting portion 251 and the second mounting portion 252, which are the portions where the convex portion 120 of the fixed bracket 100 contacts. Since the through holes 251A and 252A are formed, the inflator 3 can be fixed to the portion where the fixing bracket 100 and the force cloth bracket 200 overlap. As a result, the mounting rigidity of the inflator 3 can be further improved.

  Further, since the bracket body 110 has the rear flange 131 and the lower flange 132, the rigidity of the fixed bracket 100 can be improved. As a result, the fixing bracket 100 can be prevented from being deformed when the airbag 2 is deployed.

  Further, since the rear flange 131 is bent toward the side opposite to the side on which the power cloth bracket 200 is arranged, contact between the rear flange 131 and the power cloth bracket 200 can be suppressed. As a result, the convex portion 120 and the power cloth bracket 200 are in stable contact with each other, so that a gap between the bracket body 110 and the power cloth bracket 200 can be stably ensured, and the inner power cloth 52 is fixed to the fixed bracket 100. Can be effectively suppressed.

  Further, since the lower flange 132 is bent inward in the left-right direction, contact between the lower flange 132 of the fixing bracket 100 and the side panel 300 forming the vehicle body can be suppressed.

  Further, according to this embodiment, since the bracing bracket 200 has the vehicle body fixing portion 220 directly fixed to the side panel 300 that constitutes the vehicle body, the bracing bracket 200 can be directly fixed to the side panel 300. As a result, the mounting rigidity of the bracing cloth bracket 200 can be increased, so that the bracing cloth bracket 200 can be prevented from being deformed even if a force is applied from the bristle cloth 5 when the airbag 2 is deployed.

  Further, since the vehicle body fixing portion 220 has the concave portion 221 that is opened at the edge portion of the power cloth bracket 200, not only the bolt 81 is passed left and right, but also from the front side or lower side of the vehicle body fixing portion 220 through the opening of the concave portion 221. The bolt 81 can be arranged. Thereby, the assembling property of the bracing bracket 200 can be improved.

  Further, since the vehicle body fixing portion 220 is arranged between the fixing bracket 100 and the side panel 300 and fixed to the side panel 300 together with the fixing bracket 100 by the bolt 81, the vehicle body fixing portion having the recess 221 in which the bolt 81 is arranged. 220 can be fixed to the side panel 300 while being sandwiched between the fixing bracket 100 and the side panel 300. As a result, wobbling of the bolt 81 can be suppressed, and the mounting rigidity of the power cloth bracket 200 can be further enhanced, so that the power cloth bracket 200 can be further suppressed from being deformed when the airbag 2 is deployed.

  Further, since the step shape is formed between the vehicle body fixing portion 220 and the power cloth attachment portion 211, the rigidity of the power cloth bracket 200 can be improved. As a result, it is possible to further suppress deformation of the webbing bracket 200 when the airbag 2 is deployed.

  Further, since the step shape is formed between the vehicle body fixing portion 220 and the power cloth attachment portion 211, compared with the case where the vehicle body fixing portion and the power cloth attachment portion are on the same plane, the airbag 2 It is possible to prevent the vehicle body fixing portion 220 from being deformed by the force applied from the webbing 5 to the webbing attachment portion 211 at the time of deployment.

  Further, since the power cloth attachment portion 211 has the recessed portion 213 in a portion adjacent to the connection portion 212, an uneven shape is further formed in the vicinity of the step portion formed between the vehicle body fixing portion 220 and the power cloth attachment portion 211. be able to. This makes it possible to further improve the rigidity of the power cloth bracket 200, and thus to further suppress deformation of the power cloth bracket 200 when the airbag 2 is deployed.

  Further, since one ends of the slits 230 and 240 are open to the edge portion of the power cloth bracket 200, the power cloth 5 can be inserted and arranged from the open ends (insertion ports 234 and 244) of the slits 230 and 240. The power cloth 5 can be easily attached to the power cloth bracket 200. Further, since the power cloth bracket 200 has both the first mounting portion 251 and the vehicle body fixing portion 220, which are portions on both sides of the rear slit 230, fixed to the fixing bracket 100, the mounting rigidity of the portions on both sides of the rear slit 230. Therefore, it is possible to further suppress deformation of the webbing bracket 200 when the airbag 2 is deployed.

  Particularly, in the present embodiment, one of both side portions of the rear slit 230 fixed to the fixing bracket 100 is the vehicle body fixing portion 220 fixed to the side panel 300, so that one side portion of the rear slit 230 is attached. Since the rigidity becomes higher, it is possible to further suppress the deformation of the webbing bracket 200 when the airbag 2 is deployed.

  Further, since the power cloth bracket 200 has both the first mounting portion 251 and the second mounting portion 252 that are portions on both sides of the front slit 240 fixed to the fixing bracket 100, the portions on both sides of the front slit 240 are attached. Since the rigidity is increased, it is possible to further suppress deformation of the webbing bracket 200 when the airbag 2 is deployed.

  Further, since the vehicle body fixing portion 220 is provided so as to project from the main body portion 210 of the webbing bracket 200, the vehicle body fixing portion 220 may be provided, for example, on the side panel as compared with the case where the vehicle body fixing portion is provided in the main body portion. It can be formed to some extent freely and easily according to the shape of 300.

  Moreover, since the bracing cloth bracket 200 has the front flange 261 and the rear flange 262, the rigidity of the bracing cloth bracket 200 can be improved. As a result, it is possible to suppress deformation of the webbing bracket 200 when the airbag 2 is deployed.

  Further, since the front flange 261 is bent toward the side opposite to the side on which the airbag 2 is arranged, it is possible to prevent the front flange 261 of the web cloth bracket 200 and the airbag 2 from coming into contact with each other.

  Further, the rear flange 262 is bent toward the side on which the airbag 2 is arranged, the outer force cloth 51 is attached so as to surround the rear flange 262, and the side of the strength cloth bracket 200 on which the airbag 2 is arranged is fixed. Since it extends through the front, even if the outer force cloth 51 is pulled outward in the left and right when the airbag 2 is deployed, it is possible to prevent the tip of the rear flange 262 and the outer force cloth 51 from coming into strong contact with each other.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. The specific configuration can be changed as appropriate without departing from the spirit of the present invention.
For example, in the above-described embodiment, as shown in FIG. 4, the ring portion 51A of the outer cloth 51 is attached so as to surround a part of the rear flange 262 provided on the cloth bracket 200. It is not limited, and may be attached so as to surround the entire rear flange.

  Further, in the above-described embodiment, the rear flange 131 and the lower flange 132 of the fixing bracket 100 are bent inward in the left and right directions, but the present invention is not limited to this. For example, at least one of the rear flange and the lower flange 132 may be bent outward in the left and right directions. Further, the fixed bracket may have a configuration having only one of the rear flange and the lower flange, or may have a configuration not having the rear flange and the lower flange.

  Further, in the above-described embodiment, the fixing bracket 100 has a configuration in which the front edge portion and the upper edge portion are not provided with flanges, but the present invention is not limited thereto. For example, as shown in FIG. 9, the fixed bracket 100 may have a front flange 133 and an upper flange 134. The front flange 133 is provided at the front edge portion of the outer side portion 111 by being bent toward the left and right inward, and the upper flange 134 is provided at the upper edge portion of the outer portion 111 by being bent toward the left and right inward. In such a configuration, when the fixing bracket 100 is fixed to the base member by welding at the left and right inner ends of the front flange 133 and the upper flange 134, the welded portion and the pressure cloth arranged on the left and right outer sides in the left and right direction. Since the distance can be increased, even if spatter or the like occurs during welding, for example, it is possible to suppress the influence of the spatter. Further, the fixing bracket 100 may be configured to have only one of the front flange 133 and the upper flange 134.

  Further, in the above-described embodiment, the convex portion 120 provided on the fixed bracket 100 has a circular shape when viewed from the protruding direction, but the present invention is not limited to this, and for example, the convex portion 120 has a polygonal shape such as a square with rounded corners. May be. Further, in the above-described embodiment, the convex portions 120 are provided so as to be arranged in the vertical direction, but the present invention is not limited to this, and may be provided so as to be arranged in the front-rear direction, for example. Further, in the above-described embodiment, two convex portions 120 are provided, but the present invention is not limited to this. For example, only one convex portion may be provided, or three or more convex portions may be provided. Good.

  Further, in the above-described embodiment, the webbing bracket 200 is arranged between the inflator 3 and the fixed bracket 100, in other words, on the left and right outer sides of the fixed bracket 100, but is not limited to this. For example, the force cloth bracket may be arranged on the left and right inside of the fixed bracket, and the fixed bracket may be arranged between the inflator and the force cloth bracket.

  Further, in the above-described embodiment, the front flange 261 of the webbing bracket 200 is bent leftward and rightward and the rear flange 262 is bent leftward and rightward, but the present invention is not limited to this. For example, the front flange may be configured to be bent outward in the left and right directions. Further, the rear flange may be configured to be bent inward in the left and right directions. Further, the webbing bracket may be configured to have only one of the front flange and the rear flange, or may be configured to not include the front flange and the rear flange. In addition, the power cloth bracket may have a configuration in which at least one of the upper edge portion and the lower edge portion of the power cloth attachment portion has a flange bent toward the left and right inward or outward.

  Further, in the above-described embodiment, as shown in FIG. 6B, the concave portion 221 provided in the vehicle body fixing portion 220 is formed in a shape that is open to the front side and the lower side, but the present invention is not limited to this. For example, as shown in FIG. 10A, the recess 222 of the vehicle body fixing portion 220 may be formed in a shape that is open only on the front side. Further, as shown in FIG. 10B, the recess 223 of the vehicle body fixing portion 220 may be formed in a shape that is open only on the lower side.

  Further, in the above-described embodiment, the webbing bracket 200 has one vehicle body fixing portion 220, but the present invention is not limited to this, and may have a plurality of vehicle body fixing portions, for example. Further, in the above-described embodiment, only one of the portion on the one side of the rear slit 230 (first slit) and the portion on the other side of the rear slit 230 is the vehicle body fixing portion 220, but it is not limited to this. For example, when a plurality of vehicle body fixing portions are provided, both the one side portion of the first slit and the other side portion of the first slit may be the vehicle body fixing portion. Further, at least one of the portion on the one side of the second slit and the portion on the other side of the second slit may be the vehicle body fixing portion. Further, in the above-described embodiment, the vehicle body fixing portion 220 is fixed to the side panel 300 of the vehicle body by the bolt 81 and the nut 82, but the present invention is not limited to this, and may be fixed to the vehicle body by welding, for example. Further, the webbing bracket may not have the vehicle body fixing portion.

  Further, in the above-described embodiment, the base member 4 is directly fixed to the side panel 300 constituting the vehicle body, but the present invention is not limited to this. For example, the base member may be fixed to the vehicle body via a bracket or the like. It may be fixed to. Further, in the above-described embodiment, the base member 4 is composed of the wire frame 10, but the base member 4 is not limited to this, and the base member may be composed of a material other than the wire frame such as a resin or a metal plate, for example.

  Further, in the above-described embodiment, the example in which the side airbag device is applied to the rear seat of the automobile has been described, but the present invention is not limited to this, and the side airbag device may be applied to, for example, a front seat of the automobile or a central seat of three rows. Good.

  In addition, each element described in the above-described embodiment and modification can be implemented in an appropriate combination.

1 Side Airbag Device 2 Airbag 3 Inflator 4 Base Member 5 Power Cloth 32 Bolt 100 Fixing Bracket 110 Bracket Body 120 Convex 121 Through Hole 131 Rear Flange 132 Lower Flange 200 Lower Cloth Bracket 251 1st Attachment 251A Through Hole 252 Second 2 Mounting part 252A Through hole 300 Side panel

Claims (10)

An airbag,
An inflator for supplying gas into the airbag,
A base member that accommodates the airbag and the inflator and is fixed to the vehicle body;
A fixing bracket fixed to the base member and fixed to the inflator,
A force cloth that regulates the deployment direction of the airbag,
While being fixed to the fixed bracket, a power cloth bracket to which the power cloth is attached,
The said fixed bracket has a bracket main body and the convex part which protrudes toward the said power cloth bracket from the said bracket main body, and contacts the said power cloth bracket, The side airbag apparatus characterized by the above-mentioned.   The side airbag device according to claim 1, wherein the power cloth bracket is disposed between the inflator and the fixing bracket.   At least two said convex parts are provided, The side airbag apparatus of Claim 1 or Claim 2 characterized by the above-mentioned.   The side airbag device according to claim 1, wherein the convex portion has a circular shape when viewed from a direction in which the convex portion projects.   The side wall according to any one of claims 1 to 4, wherein the convex portion is formed with a through hole through which a bolt for fixing the inflator to the fixing bracket is inserted. Airbag device.   The said power cloth bracket is arrange | positioned between the said inflator and the said fixed bracket, and the through-hole which the said bolt penetrates is formed in the part which the said convex part contacts, The said 5 characterized by the above-mentioned. Side airbag device.   The side airbag device according to any one of claims 1 to 6, wherein the bracket body has a rear flange at a rear edge portion that is bent inward or outward in the left-right direction of the vehicle. . The force cloth bracket is arranged on one side in the left-right direction of the rear flange,
The side airbag device according to claim 7, wherein the rear flange is bent toward a side opposite to a side where the power cloth bracket is arranged.   The side airbag device according to any one of claims 1 to 8, wherein the bracket body has a lower flange at a lower edge portion that is bent inward or outward in the left-right direction of the vehicle. .   The side airbag device according to claim 9, wherein the lower flange is bent inward in the left-right direction of the vehicle.

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