JP2021066247A - Side airbag device - Google Patents

Abstract

To provide a side airbag device which enables improvement of seating feeling of a seat.SOLUTION: A side airbag device includes: an airbag module having an airbag and an inflator which supplies a gas to the airbag; and a case which houses the airbag module. The case includes: a frame member; a pad 70 covering the frame member; and a surface cover member covering the frame member and the pad 70. The pad 70 includes a front wall 71 disposed at the front side of the airbag module, the front wall 71 having a slit 71A through which the airbag protrudes during deployment of the airbag. The front wall 71 has a protruding part 75 protruding to the airbag module on its rear surface 71B.SELECTED DRAWING: Figure 5

Description

The present invention relates to a side airbag device.

Conventionally, there is known a side airbag device configured so that an airbag built in a side of a seat back is instantly inflated by the generation of gas in an inflator when an impact of a predetermined value or more is detected. Patent Document 1). In this technique, the seat pad of the seat back has a hollow compartment on the corresponding side where the airbag is accommodated.

Japanese Patent No. 3642893

By the way, a certain seating feeling is also required for the seat provided with the side airbag device. However, in the conventional configuration, when a load is applied to the seat pad from the front side, the wall on the front side of the storage portion is significantly deformed, which may reduce the seating feeling.

Therefore, an object of the present invention is to provide a side airbag device capable of improving the seating feeling of a seat.
Another object of the present invention is to satisfactorily deploy the airbag when it is deployed.
Another object of the present invention is to prevent the airbag and the pad from coming into direct contact with each other when the airbag is deployed.
Another object of the present invention is to reduce the weight of the side airbag device.
Another object is to improve the appearance of the side airbag device.

In order to achieve the above object, the side airbag device includes an airbag, an airbag module having an inflator for supplying gas into the airbag, and a case for accommodating the airbag module. The case includes a frame member, a pad covering the frame member, and a skin member covering the frame member and the pad, and the pad is before being arranged on the front side of the airbag module. The wall is provided with a front wall having a slit through which the airbag exits when the airbag is deployed, and the front wall has a convex portion on the rear surface that is convex toward the airbag module. ..

According to such a configuration, when a load is applied to the front wall of the pad from the front side, the front wall of the pad can be supported by the airbag module via the convex portion, so that the front wall is deformed more than necessary. Can be suppressed. As a result, the seating feeling of the seat including the side airbag device can be improved.

In the side airbag device described above, the convex portions may be provided on both the left and right sides of the slit.

According to this, when the airbag is deployed, the airbag first expands the left and right convex portions, and then the slit can be expanded and deployed as it is using this as a foothold. That is, by providing the convex portions on the left and right sides of the slit, the area of the portion of the pad that is expanded by the airbag can be increased when the airbag is deployed, so that the slit can be easily expanded. As a result, the airbag can be satisfactorily deployed.

In the side airbag device described above, the convex portion may be provided at a central portion in the vertical direction away from the upper end and the lower end of the slit.

According to this, the area of the portion of the pad that is expanded by the airbag becomes large in the vertical central portion of the slit, so that when the airbag is deployed, the convex portion is provided at the upper end or the lower end of the slit. , The left and right convex portions can be easily expanded, which makes it easier to expand the slit. This allows the airbag to be deployed better.

In the side airbag device described above, the side surface of the convex portion on the slit side may be configured to be flush with the inner surface of the slit.

According to this, since there is no step between the side surface of the convex portion and the inner surface of the slit, when the airbag is deployed, the airbag is satisfactorily deployed from the side surface of the convex portion through the inner surface of the slit to the front side of the front wall. Therefore, the airbag can be deployed better.

The side airbag device is a first force cloth that regulates the deployment direction of the airbag, and includes a first force cloth that extends from the slit toward the left and right outside of the vehicle, and the convex portion is the slit. The first convex portion is included on the left and right outer sides of the above, and the first convex portion can be covered with the first force cloth when viewed from the airbag module side.

According to this, since the first force cloth is interposed between the airbag and the first convex portion (pad), it is possible to prevent the airbag and the pad from coming into direct contact with each other when the airbag is deployed. Can be done. Further, since the first force cloth covers the first convex portion and heads toward the slit, when the airbag is deployed, the airbag is deployed from the first convex portion to the inner surface of the slit along the first force cloth. , The airbag can be deployed better.

The side airbag device is a second force cloth that regulates the deployment direction of the airbag, and includes a second force cloth that extends from the slit toward the left and right inside of the vehicle, and the convex portion is the slit. The second convex portion may be covered with the second force cloth when viewed from the airbag module side, including the second convex portion provided on the left and right inner sides of the above.

According to this, since the second force cloth is interposed between the airbag and the second convex portion (pad), it is possible to prevent the airbag and the pad from coming into direct contact with each other when the airbag is deployed. Can be done. Further, since the second force cloth covers the second convex portion and heads toward the slit, when the airbag is deployed, the airbag is deployed from the second convex portion to the inner surface of the slit along the second force cloth. , The airbag can be deployed better. In particular, by adopting a configuration in which the first convex portion is covered with the first force cloth and the second convex portion is covered with the second force cloth, the airbag can be deployed more satisfactorily when the airbag is deployed. it can.

In the side airbag device, the rear surface of the front wall has a lower rear surface located below the convex portion and an upper rear surface located above the convex portion, and the convex portion has a rear surface upper portion located above the convex portion. , The configuration may be such that it protrudes to the rear side from the lower part of the rear surface and protrudes to the rear side from the upper part of the rear surface.

According to this, the upper part of the rear surface and the lower part of the rear surface are recessed in the front side with respect to the convex portion, and the volume of the pad can be reduced, so that the weight of the pad can be reduced. As a result, the weight of the side airbag device can be reduced.

In the side airbag device described above, the front wall may be configured to have a recess that can accept a part of the skin member on the outside of the convex portion in the left-right direction of the vehicle.

According to this, by accommodating a part of the skin member in the recess, the vicinity of the part of the skin member is less likely to protrude to the outside of the case, and the appearance shape of the case can be made clear. As a result, the appearance of the side airbag device can be improved.

According to the present invention, the seating feeling of the seat can be improved.

Further, by providing the convex portions on the left and right sides of the slit, the airbag can be satisfactorily deployed when the airbag is deployed.

Further, by providing the convex portion at the central portion in the vertical direction away from the upper end and the lower end of the slit, the airbag can be deployed more satisfactorily when the airbag is deployed.

Further, by making the side surface of the convex portion on the slit side flush with the inner surface of the slit, the airbag can be deployed more satisfactorily when the airbag is deployed.

Further, by covering the first convex portion with the first force cloth, it is possible to prevent the airbag and the pad from coming into direct contact with each other when the airbag is deployed. In addition, the airbag can be deployed more satisfactorily when the airbag is deployed.

Further, by covering the second convex portion with the second force cloth, it is possible to prevent the airbag and the pad from coming into direct contact with each other when the airbag is deployed. In addition, the airbag can be deployed more satisfactorily when the airbag is deployed.

Further, the weight of the side airbag device can be reduced by projecting the convex portion to the rear side of the lower rear surface and the upper rear surface.

Further, by providing the front wall with a recess that can accept a part of the skin member, the appearance of the side airbag device can be improved.

It is the figure which looked at the vehicle which provided the side airbag device from the inside of a vehicle. It is the figure (a) which looked at the side panel of a vehicle body from the vehicle interior side, and the figure (b) which looked at the striker and the base bracket from above. It is an exploded perspective view of the side airbag device. It is the figure which looked at the airbag module, the 1st bracket and the base member from the left and right outside. It is a perspective view which saw the pad from the left and right outside. It is a cross-sectional view of the side airbag device passing through the upper part of the force cloth. It is an enlarged cross-sectional view near the convex part of a pad. It is an exploded perspective view of the power cloth. It is a cross-sectional view of the side airbag device passing through the loop part of the power cloth. It is a perspective view of the 1st mounting wire, the 2nd mounting wire and the fixing wire. FIG. 5 is a cross-sectional view of a second posture in which the first bracket is fixed to the case and is rotated by a predetermined angle from the first posture to the left and right outside around the front end portion. It is the figure which looked at the side airbag device from the left and right outside. It is the figure which looked at the airbag module, the 1st bracket, the 2nd bracket, the harness and the connector from the rear view. It is the figure which looked at the 1st bracket, 2nd bracket, harness and the connector from the top. It is a perspective view of the side airbag device, and is the figure (a) which shows the state which the line fastener is closed, and is the figure (b) which shows the state before closing a line fastener. It is a perspective view of the striker, the first skin member, the plate member, the second skin member, and the cloth-like member. It is an exploded perspective view which looked at the side airbag device from the left and right outside. It is a vertical sectional view of a pad and a 1st cover part passing through a slit hole.

Next, an embodiment of the invention will be described in detail with reference to the drawings as appropriate.
As shown in FIG. 1, the side airbag device 1 of the present embodiment is applied to the rear seat of an automobile as a vehicle, and is arranged between the seat S and the side wall BS of the vehicle body. Specifically, the seat S has a seat cushion S1 and a seat back S2, and the side airbag device 1 is arranged between the seat back S2 and the side wall BS.

The seat back S2 is provided so as to be rotatable back and forth around the lower end portion so that the seat back S2 can be tilted forward. On the other hand, the side airbag device 1 is fixed to the side wall BS of the vehicle body, and is not fixed to the seat back S2. Therefore, when the seat S is moved, specifically, when the seat back S2 is tilted forward, the side airbag device 1 is exposed in a state of remaining on the side wall BS. When the seat back S2 is tilted forward, the side airbag device 1 exposes the inner side surface 1S (see FIG. 15A), which is the surface on the seat S side. When the seat back S2 is in the upright state shown in FIG. 1, the front surface of the side airbag device 1 is substantially flush with the front surface of the seat back S2. Therefore, the side airbag device 1 is apparently 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 body (left side of the seat S) will be described, but the side airbag device having a substantially symmetrical configuration is also provided on the right side of the vehicle body. Can be done. Further, in the present embodiment, unless otherwise specified, the inside and outside in the left-right direction are based on the vehicle body of the vehicle, not the side airbag device 1 itself. That is, the side closer to the left and right center of the vehicle body is the inside, and the side far from the left and right center of the vehicle body is the outside. When viewed from the side airbag device 1, the left and right inner sides correspond to the "seat S side", and the left and right outer sides correspond to the "vehicle body side". Further, the front and back and the top and bottom are based on the seat S unless otherwise specified.

In the side airbag device 1 of FIG. 1, a dehiscence portion 1C that splits and expands when the airbag 11 (see FIG. 6) is deployed is provided on the front surface long in the vertical direction.

As shown in FIG. 2A, the vehicle body has a side panel 300. The side panel 300 is made of metal and has a side wall portion 310 forming a side wall BS, a wheel house 320 that bulges inward from the side wall portion 310, and a striker installation portion 330.

The wheel house 320 is a portion for accommodating the tire T. The airbag mounting bracket 340 is fixed to the wheel house 320 at a position corresponding to the upper part of the tire T by welding or the like. The airbag mounting bracket 340 is a member for mounting the side airbag device 1 to the vehicle body, and is made of a metal plate. As shown in FIG. 3, the airbag mounting bracket 340 has a hole 341 through which a bolt 93B for fixing the side airbag device 1 is inserted. Further, the airbag mounting bracket 340 has nuts 93N welded to the left and right outer surfaces.

Returning to FIG. 2A, the striker installation portion 330 is a portion for securing the installation surface of the striker 350, and is fixed to the upper portion of the side panel 300 by welding or the like. As shown in FIG. 2B, the striker 350 is a U-shaped member protruding inward from the side panel 300 of the vehicle body, and is made of metal. Specifically, the striker 350 has a pair of first rod-shaped portions 351 provided so as to project from the side panel 300, and a second rod-shaped portion 352 connecting the tips of the pair of first rod-shaped portions 351 to each other. ing. The seat back S2 of the seat S has a latch mechanism (not shown) that can be engaged with the striker 350, and is locked in an upright state by being raised from a state of being tilted forward and engaging with the striker 350. Will be done.

The striker 350 is fixed to the striker installation portion 330 of the vehicle body via the base bracket 360. The base bracket 360 is made of a metal plate, and has a base portion 361 attached to the striker installation portion 330, a connecting portion 362 extending inward from the upper end of the base portion 361, and air extending upward from the left and right inner ends of the connecting portion 362. It has a bag fixing portion 363. Bolts 92B are fixed to the airbag fixing portion 363 by welding so as to project inward to the left and right. The striker 350 is fixed to the base portion 361 by welding or the like. The base bracket 360 is fixed to the striker installation portion 330 by a plurality of bolts 364.

As shown in FIG. 3, the side airbag device 1 includes an airbag module 10, a case 2, a force cloth 30, and a first bracket 100.

The airbag module 10 has an airbag 11 and an inflator 12 that supplies gas into the airbag 11. The inflator 12 has two protruding bolts 12B, which are fixed to the first bracket 100 at the bolts 12B. The airbag 11 is folded so as to be deployable by the gas pressure of the inflator 12, and is gathered around the inflator 12.

The case 2 accommodates the airbag module 10 by mounting the airbag module 10 inside. The case 2 includes a base member BA, a pad 70 covering the base member BA (see FIG. 6), and a skin member 80 (see FIG. 6) covering the base member BA and the pad 70.

The base member BA is a member fixed to the vehicle body, and includes a second bracket 200 and a wire frame 20 as a frame member.
The second bracket 200 constitutes the skeleton of the case 2 together with the wire frame 20. The second bracket 200 is a plate-shaped member to which the first bracket 100 is attached, and is made of sheet metal. The second bracket 200 has a main body portion 210, a notch portion 220, a first extension portion 230, and a second extension portion 240.

The notch 220 is formed on the rear edge of the central portion of the main body 210 in the vertical direction. The notch 220 is a portion through which the striker 350 passes.

A first vehicle body fixing portion 210A as a vehicle body fixing portion fixed to the vehicle body is provided on the upper portion of the main body portion 210 above the notch 220. The first vehicle body fixing portion 210A is formed with a fixing hole 211 used for fixing the side airbag device 1 to the vehicle body. Further, a bracket fixing portion 212 used for fixing the first bracket 100 is provided in a portion of the main body portion 210 below the notch portion 220. The bracket fixing portion 212 has a hole 218 (see FIG. 17) in the main body portion 210, and a nut 91N is welded to the right side surface.

An engaging hole 213 is formed in the main body 210. The engagement hole 213 has a first edge portion 213A extending substantially vertically on the rear side and a second edge portion 213B extending substantially horizontally on the lower side.

Further, a trapezoidal protruding joint portion 214 is formed on the front edge of the main body portion 210, and two trapezoidal protruding joint portions 215 are formed on the upper edge of the main body portion 210.

The first extending portion 230 extends downward from the rear portion of the lower end of the main body portion 210. The first extending portion 230 has an inclined portion 231 extending diagonally downward on the left and right outside from the lower end of the main body portion 210, and a second vehicle body fixing portion 232 as a vehicle body fixing portion extending downward from the lower end of the inclined portion 231. ing. The second vehicle body fixing portion 232 is located outside the main body portion 210 in the left-right direction. The second vehicle body fixing portion 232 is arranged below the first vehicle body fixing portion 210A. The second vehicle body fixing portion 232 includes a fixing hole 233 used when fixing the side airbag device 1 to the vehicle body and an engaging hole 234 used when fixing the first bracket 100 to the second bracket 200. It is formed. The fixing hole 233 is a circular hole through which the bolt 93B passes, and the engaging hole 234 is a rectangular hole into which the tongue portion 152 at the lower end of the first bracket 100 engages. The engagement hole 234 is arranged below the fixing hole 233.

The second extending portion 240 extends downward from the front portion of the lower end of the main body portion 210. The second extending portion 240 has an extending portion 241 extending downward from the lower end of the main body portion 210, and a bracket lower end portion 242 extending outward from the lower end of the extending portion 241 to the left and right.

The wire frame 20 is made of a metal wire (metal rod). The wire frame 20 is fixed to the second bracket 200 by welding or the like. In the figure, the joint portion by welding is shown by a dot hatch.
The wire frame 20 has a first wire 21, a second wire 22, a third wire 23, and a fourth wire 24, and is configured by joining these four wires 21 to 24 by welding. There is. In the present embodiment, the wire frame 20 is composed of four wires 21 to 24, but the number of wires constituting the wire frame 20 is arbitrary.

The first wire 21 together with the third wire 23 defines the external shape of the case 2. The first wire 21 has a frame portion 21A formed along the left and right outer contours of the front portion and the upper portion of the side airbag device 1, and a connecting portion 21B extending rearward from the lower end of the frame portion 21A. .. The frame portion 21A includes a front frame portion 21D as a first extending portion extending substantially vertically along the longitudinal direction of the inflator 12 extending vertically (hereinafter, also simply referred to as “longitudinal direction”), and a front frame portion 21D. It has an upper frame portion 21E that bends backward from the upper end of the above and extends substantially forward and backward. The connecting portion 21B is joined to the lower end portion 242 of the bracket of the second bracket 200.

The third wire 23 includes a frame portion 23A formed along the left and right inner contours of the front portion and the upper portion of the side airbag device 1, a connecting portion 23B extending from the upper end of the frame portion 23A to the left and right outside, and a frame portion 23A. It has a connecting portion 23C extending rearward from the lower end of the. The left and right outer ends of the connecting portion 23B are bent forward and extended, and the portion extending forward is joined to the upper end portion of the frame portion 21A of the first wire 21. The connecting portion 23C is joined to the second bracket 200. Further, the frame portion 23A is joined to the tip portions of the joint portions 214 and 215 of the second bracket 200.

One end of the fourth wire 24 is joined to the frame portion 21A of the first wire 21, and the other end is joined to the frame portion 23A of the third wire 23, thereby connecting the first wire 21 and the third wire 23. ing.

The second wire 22 has an extending portion 22A, a connecting portion 22B extending left and right inward from the upper end of the extending portion 22A, and a connecting portion 22C extending rearward from the left and right inner ends of the connecting portion 22B. As shown in FIG. 4, the extending portion 22A includes a front extending portion 22D as a second extending portion extending substantially vertically along the front frame portion 21D of the first wire 21, and a front extending portion 22D. It has an upper extending portion 22E that bends rearward from the upper end and extends substantially forward and backward along the upper frame portion 21E. Further, the extending portion 22A has a plurality of skin mounting portions 22F and a bent convex portion 22G.

The skin attachment portion 22F is a portion to which the hook 81 provided on the skin member 80 (see FIG. 6) can be engaged, and is provided at three locations on the front extending portion 22D and one location on the upper extending portion 22E. ing.
The bent convex portion 22G is a portion that is bent so as to be convex forward, and is formed on the upper portion of the front extending portion 22D. The bent convex portion 22G is adjacent to the skin mounting portion 22F located between two adjacent skin mounting portions 22F of the front extending portion 22D, specifically, the uppermost skin mounting portion 22F of the front extending portion 22D, and below the skin mounting portion 22F. It is formed between the skin mounting portion 22F and the skin mounting portion 22F.

In the second wire 22, the connecting portion 22C is joined to the left and right outer surfaces of the second bracket 200, and the lower end portion of the extending portion 22A is joined to the lower end portion of the frame portion 21A of the first wire 21. Further, in the second wire 22, the bent convex portion 22G is joined to the front frame portion 21D of the first wire 21. As a result, one of the portions of the second wire 22 between the two adjacent skin attachment portions 22F is fixed to the first wire 21.

The extending portion 22A of the second wire 22 is arranged along the frame portion 21A of the first wire 21. Specifically, in the second wire 22, the front extending portion 22D is arranged behind the front frame portion 21D along the front frame portion 21D when viewed from the left-right direction, and the upper extending portion 22E is the upper frame portion 21E. It is arranged below the upper frame portion 21E along the upper frame portion 21E.

Further, as shown in FIG. 6, the front extending portion 22D is arranged at a position closer to the inner side in the left-right direction of the case 2 than the front frame portion 21D when viewed from the front side (center line of the second wire 22). See C1). The left and right outer portions of the front extending portion 22D are arranged so as to overlap the left and right inner portions of the front frame portion 21D when viewed from the front side. Further, the upper extending portion 22E (see FIG. 4) extends diagonally so as to be located inward on the left and right as it goes backward, and the entire portion is closer to the inside in the left-right direction of the case 2 than the front frame portion 21D. Is located in. Due to the arrangement of the front extending portion 22D and the upper extending portion 22E, each skin mounting portion 22F provided on the extending portion 22A is inside the case 2 (inside) of the front frame portion 21D of the first wire 21. ), Furthermore, it is arranged at a position closer to the left and right inside of the case 2.

In the case 2, the wire frame 20 and the second bracket 200 are insert-molded into the pad 70. As a result, the pad 70 covers the wire frame 20 and the second bracket 200. Then, the skin member 80 covers the outside of the pad 70.
The skin member 80 is a member that constitutes the outer surface of the side airbag device 1, and is made of cloth, leather, or the like. The skin member 80 covers the second bracket 200, the wire frame 20, and the pad 70 mainly from the front side, the upper side, and the left and right inside. Details of the skin member 80 will be described later.

As shown in FIG. 5, the pad 70 includes a front wall 71, an upper wall 72 extending rearward from the upper end portion of the front wall 71, a lower wall 73 extending rearward from the lower end portion of the front wall 71, and a front wall 71. It is provided with a side wall 74 extending rearward from the left and right inner ends. The upper end of the side wall 74 is connected to the left and right inner ends of the upper wall 72, and the lower end is connected to the left and right inner ends of the lower wall 73.

The front wall 71 is a portion arranged on the front side of the airbag module 10 (see FIG. 6), and has a slit 71A through which the airbag 11 for pulling the airbag 11 out of the case 2 passes when the airbag 11 is deployed. Have. The slit 71A extends long in the vertical direction. As shown in FIG. 6, the skin member 80 enters the slit 71A of the pad 70 and is arranged along the surface of the pad 70. As shown in FIG. 7, the two portions of the skin member 80 that have entered the slit 71A are sewn by the sewn portions 85 that are weak to each other.

As shown in FIGS. 5 and 6, the front wall 71 has a convex portion 75 on the rear surface 71B that is convex toward the airbag module 10. Here, the rear surface 71B of the front wall 71 has a rear surface lower portion 71C located below the convex portion 75 and a rear surface upper portion 71D located above the convex portion 75, and the convex portion 75 has a rear surface upper portion 71D. It protrudes to the rear side of the lower rear surface 71C and protrudes to the rear side of the upper rear surface 71D. In other words, the rear surface 71B of the front wall 71 has a shape in which both the rear surface lower portion 71C and the rear surface upper portion 71D are recessed forward with respect to the convex portion 75.

The convex portions 75 are provided on both the left and right sides of the slit 71A, respectively. Specifically, the convex portion 75 includes a first convex portion 75A provided on the left and right outer sides of the slit 71A, and a second convex portion 75B provided on the left and right inner sides of the slit 71A. The first convex portion 75A and the second convex portion 75B have a vertically long shape, but the vertical length thereof is shorter than the vertical length of the slit 71A. The first convex portion 75A and the second convex portion 75B are provided at the central portion in the vertical direction away from the upper end and the lower end of the slit 71A.

As shown in FIG. 7, the side surfaces F11 and F12 of the first convex portion 75A and the second convex portion 75B on the slit 71A side are flush with the inner surfaces F21 and F22 of the slit 71A. Specifically, the side surface F11 facing the left-right inside of the first convex portion 75A and the surface (F21) facing the left-right inside of the inner surface of the slit 71A are in a flat state with no step between them, and the second convex portion 75B. The side surface F12 facing the left and right outside and the inner surface of the slit 71A facing the left and right outside (F22) are in a flat state with no step between them.

As shown in FIG. 6, the force cloth 30 is a member for restricting the deployment direction of the airbag 11 when the airbag 11 is deployed and for opening the dehiscence portion 1C. The force cloth 30 includes a first force cloth 31 and a second force cloth 32.
The first force cloth 31 extends from the slit 71A provided in the pad 70 toward the left and right outside of the vehicle, and is arranged so as to pass through the left and right outside of the airbag module 10. Further, the second force cloth 32 extends from the slit 71A toward the left and right inside of the vehicle.

As shown in FIG. 7, each front end portion of the first force cloth 31 and the second force cloth 32 enters the slit 71A and is attached to the skin member 80. Specifically, the front end portion of the first force cloth 31 is sewn to the rear end portion of the skin member 80 that covers the inner surface F21 of the slit 71A by the sewn portion 86 that is stronger than the sewn portion 85. The front end portion of the force cloth 32 is sewn to the rear end portion of the skin member 80 that covers the inner surface F22 of the slit 71A by the sewn portion 86 that is stronger than the sewn portion 85.

Returning to FIG. 6, the force cloth 30 is fixed to the fixing wire 60 fixed to the first bracket 100 by a connecting member CN different from the force cloth 30. Specifically, the connecting member CN includes a first mounting wire 40 as a second mounting member and a second mounting wire 50 as a first mounting member, and the first force cloth 31 and the second force cloth 32. Has ring portions R1 and R2 at the rear end portion. A second attachment wire 50 is attached to the ring portion R1 of the first force cloth 31, and the first force cloth 31 is fixed to the fixing wire 60 by the second attachment wire 50. Further, in the second force cloth 32, the first attachment wire 40 is attached to the ring portion R2, and the second force cloth 32 is fixed to the fixing wire 60 by the first attachment wire 40.

As shown in FIG. 8, in the first force cloth 31, the ring portion R1 is formed by folding the rear end portion of the cloth constituting the first force cloth 31 and sewing the folded portion along the vertical direction. It is formed. The first force cloth 31 is formed at the upper part 31A of the first force cloth including the ring portion R1, the lower part 31B of the first force cloth located below the upper part 31A of the first force cloth, and the front end portion of the upper part 31A of the first force cloth. It has a notch 31C that opens to the front side.

In the second force cloth 32, the ring portion R2 is formed by folding the rear end portion of the upper portion of the cloth constituting the second force cloth 32 and sewing the folded portions along the vertical direction. .. The second force cloth 32 is located below the upper part 32A of the second force cloth including the ring portion R2 and the upper part 31A of the first force cloth, and extends to the rear side of the upper part 31A of the first force cloth. It has 32B, a hook mounting cloth 33, and a hook 35.

The hook attachment cloth 33 mainly has a sewn portion 33A sewn to the upper end portion of the rear side portion of the second force cloth lower portion 32B, and a connecting portion 33B extending from the front end portion of the sewn portion 33A. A hook 35 is attached to the end of the connecting portion 33B by sewing or adhering. The connection portion 33B is arranged so that the hook attachment cloth 33 is sewn to the second force cloth 32 and then folded upward so as to extend upward from the second force cloth lower portion 32B. It is in a state of being arranged at the end portion located above the connecting portion 33B.

The hook 35 is hooked on the second edge portion 213B of the engagement hole 213 formed in the second bracket 200 (see FIGS. 3 and 17). As a result, the hook 35 is the edge of the second force cloth lower portion 32B in the longitudinal direction of the inflator 12, specifically, the upper edge of the second force cloth lower portion 32B (the left and right inner portions of the upper edge of the loop portion 30A described later). Is fixed to the case 2. The connecting portion 33B has a trapezoidal shape that becomes wider as the distance from the hook 35 increases.

As shown in FIG. 9, the rear end portions of the first force cloth lower portion 31B and the second force cloth lower portion 32B are sewn together in the vertical direction. As a result, the force cloth 30 has a loop portion 30A surrounding the airbag module 10 when viewed from the longitudinal direction. In the present embodiment, the first force cloth 31 and the second force cloth 32 are made of different cloths, but the first force cloth and the second force cloth may be made of one piece of cloth. Good. In this case, the loop portion can also be formed of a single piece of cloth.

As shown in FIG. 6, the convex portion 75 provided on the front wall 71 of the pad 70 is covered with the force cloth 30 when viewed from the airbag module 10 side, that is, the rear side. Specifically, the first convex portion 75A is covered with the first force cloth 31 when viewed from the rear side, and the second convex portion 75B is covered with the second force cloth 32 when viewed from the rear side. There is.

As shown in FIG. 3, the first bracket 100 is a plate-shaped member to which the airbag module 10 is fixed, and is made of sheet metal. The first bracket 100 is fixed to the second bracket 200 constituting the case 2 with the airbag module 10 attached.

The first bracket 100 includes a main body 110 to which the airbag module 10 is fixed, a harness facing portion 120 as a bulging portion, a connector fixing portion 130, a notch portion 140, a first fixing portion 150, and a first portion. It has two fixing portions 160 and a third fixing portion 170.

The main body 110 is a portion to which the airbag module 10 is fixed, and is provided with two fixing holes 111 into which the two bolts 12B of the inflator 12 are inserted. A bolt 12B is inserted into the fixing hole 111, and a nut 12N is screwed into the bolt 12B to fix the airbag module 10 to the main body 110. The airbag module 10 is arranged on the left and right outer sides of the main body 110. Further, a fixing wire 60 for fixing the connecting member CN is joined to the main body 110 by welding or the like.

The harness facing portion 120 is a portion that faces left and right with the first portion 410 (see FIG. 4) of the harness 400, which will be described later, and extends upward from the upper end of the main body portion 110. The harness facing portion 120 bulges toward the left and right outside on the side opposite to the left and right outside on which the airbag module 10 is arranged with respect to the main body portion 110 and the connector fixing portion 130 (see also FIG. 13). A fixing hole 121 with which a clip 441 (see FIG. 13) for fixing the harness 400 to the first bracket 100 is engaged is provided in the lower portion of the harness facing portion 120.

The connector fixing portion 130 is a portion to which the connector 450 described later is fixed, and extends upward from the front portion of the upper end of the harness facing portion 120, and further extends rearward. The connector fixing portion 130 is arranged on the side opposite to the main body portion 110 with the harness facing portion 120 interposed therebetween. Therefore, the connector fixing portion 130 is arranged at a position farther from the harness facing portion 120 from the inflator 12 of the airbag module 10 fixed to the main body portion 110. A fixing hole 131 in which a clip 442 (see FIGS. 13 and 14) for fixing the harness 400 to the first bracket 100 is engaged is provided in the lower portion of the connector fixing portion 130. Further, a fixing hole 132 in which a clip 460 (see FIG. 14) for fixing the connector 450 to the first bracket 100 is engaged is provided in the upper portion of the connector fixing portion 130.

The notch 140 is formed on the rear edge of the upper part of the first bracket 100. The notch 140 is a portion through which the striker 350 passes.

The first fixing portion 150 is provided at the lower end portion of the main body portion 110, and is positioned so as to be displaced inward in the left-right direction with respect to the main body portion 110. The first fixing portion 150 is provided with a fixing hole 151 through which a bolt 93B passes when the side airbag device 1 is fixed to the vehicle body. A tongue portion 152 that engages with the engagement hole 234 of the second bracket 200 extends from the lower end of the first fixing portion 150 when the first bracket 100 is fixed to the second bracket 200. The tongue portion 152 is bent and extended inward to the left and right. The width of the tongue portion 152 in the front-rear direction is substantially the same as the width of the engagement hole 234 in the front-rear direction.

The second fixing portion 160 is provided at the rear end portion of the harness facing portion 120, and is positioned so as to be displaced inward in the left-right direction with respect to the harness facing portion 120. The second fixing portion 160 is provided with a fixing hole 161 into which a bolt 91B is inserted when the first bracket 100 is fixed to the second bracket 200.

The third fixing portion 170 is provided at the rear end portion of the connector fixing portion 130, and is positioned so as to be displaced inward in the left-right direction with respect to the connector fixing portion 130. The third fixing portion 170 is provided with a fixing hole 171 into which a bolt 92B is inserted when the side airbag device 1 is fixed to the vehicle body.

As shown in FIG. 10, the first attachment wire 40 is a member attached to the second force cloth 32, and the second attachment wire 50 is a member attached to the first force cloth 31. The fixing wire 60 is a member to which the first mounting wire 40 and the second mounting wire 50 are fixed. The first mounting wire 40, the second mounting wire 50, and the fixing wire 60 are made of metal.

The fixed wire 60 includes a wire mounting portion 61 extending vertically, a pair of connecting portions 62 extending forward from the upper and lower ends of the wire mounting portion 61, and a pair of connecting portions 62 extending vertically from each front end of each connecting portion 62 so as to approach each other. It has a fixed portion 63. The pair of fixed portions 63 are fixed to the first bracket 100 (see FIG. 3).
The wire mounting portion 61 is an engaging portion provided on the first bracket 100, and is bent so as to have a convex portion toward the front with which the curved portions 44, 54 described later of the mounting wires 40, 50 are engaged. It has two wire engaging portions 61A.

The first mounting wire 40 includes a first force cloth mounting portion 41 extending vertically, a first upper extending portion 42 extending rearward from the upper end of the first force cloth mounting portion 41, and a first force cloth mounting portion. It has a first lower extending portion 43 which is a portion extending rearward from the lower end of the portion 41.
The first force cloth attachment portion 41 is a portion to which the second force cloth 32 is attached. The second force cloth 32 is attached to the first attachment wire 40 by passing the first force cloth attachment portion 41 through the ring portion R2.

A first curved portion 44 is provided at each of the rear end portions of the first upper extending portion 42 and the first lower extending portion 43. The first curved portion 44 is a portion that engages with the wire mounting portion 61 (wire engaging portion 61A) of the fixed wire 60, and is curved so as to be convex rearward. Each end 44A of each first bending 44 bends and extends up and down so as to approach each other.

In the present embodiment, the first lower extension portion 43 approaches the first upper extension portion 42 as it approaches the wire attachment portion 61. As a result, it is possible to secure the vertical length of the first force cloth mounting portion 41 while making the portion to be mounted to the fixing wire 60 compact. Therefore, although it is compact, the deployment direction of the airbag 11 can be satisfactorily regulated by the second force cloth 32. The first mounting wire 40 extends in the direction of approaching the first upper extending portion 42 as the first lower extending portion 43 approaches the wire mounting portion 61, whereas the first upper extending portion 42 mounts the wire. Since it extends substantially straight back and forth toward the portion 61, its shape is vertically asymmetric.

By the way, as shown in FIG. 3, the first fixing portion 150, the second fixing portion 160, and the third fixing portion 170 of the first bracket 100 are displaced inward in the left-right direction with respect to the main body portion 110, while the first fixing portion 150, and the third fixing portion 170 are displaced inward in the left-right direction. Since the second vehicle body fixing portion 232 of the two brackets 200 is displaced outward in the left-right direction with respect to the main body portion 210, as shown in FIG. 6, when the first bracket 100 and the second bracket 200 are combined, as shown in FIG. A space is created between the main body 110 and the main body 210. A part of the connecting member CN, specifically, the first upper extending portion 42 and the first lower extending portion 43, which are a part of the first mounting wire 40, is between the first bracket 100 and the second bracket 200. It is arranged in the space of. More specifically, the first upper extending portion 42 and the first lower extending portion 43 of the first mounting wire 40 are opposite to the airbag module 10 in the left-right direction of the first bracket 100, specifically, the first one. It is arranged so as to pass through the left and right inside of the bracket 100.

Returning to FIG. 10, the second mounting wire 50 includes a second force cloth mounting portion 51 extending vertically and a second upper extending portion 52 extending inward from the upper end of the second force cloth mounting portion 51. The second lower extending portion 53, which is a portion extending inward from the lower end of the second force cloth attaching portion 51, is provided.
The second force cloth attachment portion 51 is a portion to which the first force cloth 31 is attached. The first force cloth 31 is attached to the second attachment wire 50 by passing the second force cloth attachment portion 51 through the ring portion R1.

Second curved portions 54 are provided at the left and right inner ends of the second upper extending portion 52 and the second lower extending portion 53, respectively. The second curved portion 54 is a portion that engages with the wire mounting portion 61 (wire engaging portion 61A) of the fixed wire 60, and is curved so as to be convex inward on the left and right. Each end portion 54A of each second curved portion 54 is bent and extends forward, and is further bent in the vertical direction so as to approach each other. In a state where the second curved portion 54 is engaged with the wire mounting portion 61, the end portion 54A of the second curved portion 54 is engaged with the end portion 44A of the first curved portion 44. Therefore, not only the first mounting wire 40 is engaged with the fixing wire 60 and the second mounting wire 50 is engaged with the fixing wire 60, but also the second mounting wire 50 is engaged with the first mounting wire 40. , These three parts are not easily disengaged.

In the present embodiment, the second upper extending portion 52 and the second lower extending portion 53 approach each other as they approach the wire mounting portion 61. As a result, it is possible to secure the vertical length of the second force cloth mounting portion 51 while making the portion to be mounted to the fixing wire 60 compact. Therefore, although it is compact, the deployment direction of the airbag 11 can be satisfactorily regulated by the first force cloth 31. Since the length of the vertically extending portion of the second upper extending portion 52 of the second mounting wire 50 is longer than the length of the vertically extending portion of the second lower extending portion 53, the shape of the second mounting wire 50 is vertically extended. It is asymmetric.

The second attachment wire 50 attached to the first force cloth 31 has a front end portion of the first bracket 100 as shown in FIG. 11 from the first posture shown in FIG. 6 in which the first bracket 100 is fixed to the case 2. The first force cloth 31 can be engaged with the wire engaging portion 61A of the first bracket 100 in the second posture which is rotated by a predetermined angle θ to the left and right outside with respect to the center. On the other hand, the second attachment wire 50 attached to the first force cloth 31 is due to the fact that the first force cloth 31 can hardly expand and contract while the first bracket 100 is fixed to the case 2, as shown in FIG. It cannot be disengaged from the wire engaging portion 61A. As an example, the predetermined angle θ is preferably 20 °, more preferably 30 °, and even more preferably 40 °.

As shown in FIG. 12, the two bolts 12B of the inflator 12 are located at different positions from the second force cloth lower portion 32B in the longitudinal direction of the inflator 12. Specifically, the two bolts 12B are located above the second force cloth lower portion 32B (loop portion 30A).

Further, the two bolts 12B are located at positions overlapping the second force cloth upper part 32A in the longitudinal direction and do not penetrate the second force cloth upper part 32A. Specifically, as shown in FIG. 6, the second force cloth upper part 32A is short in the front-rear direction and does not extend to the side of the bolt 12B, that is, to the right side, so that the second force cloth upper part 32A does not interfere with the bolt 12B. It is arranged like this. The second force cloth upper portion 32A and the fixing wire 60 are connected by a first mounting wire 40 which is long in the front-rear direction. A first mounting wire 40 is arranged at a portion where the inflator 12 and the bolt 12B are located in the front-rear direction.

As shown in FIG. 12, the first mounting wire 40 is arranged at a position different from that of the bolt 12B when viewed from the left-right direction. That is, the first mounting wire 40 is arranged so as not to interfere with the bolt 12B. In addition, in FIG. 12, the first force cloth 31 is shown by the alternate long and short dash line, and the second force cloth 32 is shown by the alternate long and short dash line.

Further, one end of the airbag module 10 in the longitudinal direction, specifically, the lower end is covered with a loop portion 30A. Further, the position of the lower end portion of the first bracket 100 in the longitudinal direction overlaps with the loop portion 30A. In other words, the lower end portion of the first bracket 100 overlaps with the loop portion 30A when viewed from the left-right direction.

As shown in FIG. 4, a harness 400 for supplying electricity to the inflator 12 is connected to the airbag module 10. One end of the harness 400 is electrically connected to the inflator 12, and the other end is electrically connected to the connector 450 fixed to the first bracket 100. The harness 400 has a first portion 410, a second portion 420, and a third portion 430.

The first portion 410 is a portion of the harness facing portion 120 of the first bracket 100 that is arranged on the side opposite to the side on which the airbag module 10 is arranged, that is, on the left and right inside. Further, as shown in FIG. 13, the first portion 410 is arranged between the first bracket 100 and the second bracket 200 in a state where the first bracket 100 is fixed to the second bracket 200. Specifically, the first portion 410 is arranged in the space between the harness facing portion 120 of the first bracket 100 and the main body portion 210 of the second bracket 200.

The first portion 410 has a first end portion 411 on the second portion 420 side and a second end portion 412 on the third portion 430 side (opposite to the second portion 420 side), and the first end portion 411. And the second end 412 is fixed to the left and right inside of the first bracket 100. Specifically, the first end portion 411 is fixed to the left and right inside of the first bracket 100 by engaging the clip 441 with the fixing hole 121 of the harness facing portion 120 from the left and right inside while being held by the clip 441. Has been done. Further, the second end portion 412 is fixed to the left and right inside of the first bracket 100 by engaging the clip 442 with the fixing hole 131 of the connector fixing portion 130 from the left and right inside while being held by the clip 442. There is.

The second portion 420 is a portion extending from the first end portion 411 of the first portion 410 and connected to the inflator 12 (see FIG. 4). The second portion 420 connected to the inflator 12 is connected to the first portion 410 through the side opposite to the side where the airbag 11 of the first bracket 100 is deployed, that is, the rear side of the first bracket 100. Further explaining, the second portion 420 is pulled from the left and right outside of the first bracket 100 on which the inflator 12 is arranged, passes through the rear side of the harness facing portion 120, and is pulled into the left and right inside of the first bracket 100. It is connected to the first end 411.

The third portion 430 is a portion extending from the second end portion 412 of the first portion 410 and connected to the connector 450. The third portion 430 is located on the left and right inside of the first bracket 100, from the second end portion 412 of the first portion 410 to the left and right where the airbag module 10 of the first bracket 100 is arranged through the front side of the connector fixing portion 130. It is pulled out and connected to the connector 450. As shown in FIG. 14, the connector fixing portion 130 of the first bracket 100 has a flange 133 bent inward to the left and right at the front end portion facing the third portion 430. Therefore, even if the third portion 430 comes into contact with the front end portion of the connector fixing portion 130, it comes into contact with the curved curved portion of the flange 133, not the edge portion of the sheet metal forming the first bracket 100.

The connector 450 is arranged on the left and right outer sides of the first bracket 100. The connector 450 is fixed to the left and right outside of the first bracket 100 by engaging the clip 460 attached to the connector 450 with the fixing holes 132 (see FIG. 3) of the connector fixing portion 130 from the left and right outside. A connector of a harness (not shown) for supplying electricity to the inflator 12 from a power supply device provided outside the side airbag device 1 is connected to the connector 450.

As shown in FIG. 6, the skin member 80 includes a first skin member 510, a second skin member 520, and a wire fastener 550 as a fastener.
The first skin member 510 includes an inner cover portion 511 as a first cover portion, a front cover portion 512, an upper cover portion 513 (see FIG. 15B), and an inner fixing portion 514 as a base fixing portion. It has an outer fixing portion 515, a third cover portion 531 and a fourth cover portion 541.

The inner cover portion 511 is a portion that covers the base member BA and the pad 70 from the left and right inside. As shown in FIG. 15B, the inner cover portion 511 has a first hole 516 through which the striker 350 provided in the vehicle body is inserted while the side airbag device 1 is attached to the vehicle body. Further, the inner cover portion 511 has an opening 517 that exposes the vehicle body fixing portions 210A and 232 that are a part of the second bracket 200. Specifically, the opening 517 includes a first opening 517A that exposes the first vehicle body fixing portion 210A and a second opening 517B that exposes the second vehicle body fixing portion 232.

Further, the inner cover portion 511 has a slit hole 518 and a notch portion 519 for exposing a part of the pad 70. The pad 70 has a ridge line portion 76 on the left and right inner surfaces, which extends substantially back and forth and becomes convex toward the left and right inside. The left and right inner surfaces of the pad 70 follow the shape of the left and right outer surfaces of the side panel 300 (see FIG. 2) of the vehicle body, and the upper portion of the ridge line portion 76 extends along the vertical direction, and the ridge line portion 76 As the lower part goes down, it extends diagonally so that it is located on the left and right outside. The slit hole 518 is formed so as to extend substantially back and forth along the ridge line portion 76 of the pad 70.

The front cover portion 512 is a portion that covers the second bracket 200 and the pad 70 from the front side, and extends from the front end of the inner cover portion 511 toward the left and right outside. The dehiscence portion 1C that tears when the airbag 11 is deployed is provided in the front cover portion 512.
The upper cover portion 513 is a portion that covers the second bracket 200 and the pad 70 from the upper side, extends from the upper end of the front cover portion 512 toward the rear side, and the left and right inner ends are connected to the upper end of the front cover portion 512. ..

As shown in FIG. 6, the inner fixing portion 514 extends from the rear end of the inner cover portion 511 to the left and right outside. The inner fixing portion 514 is arranged so as to wrap around the rear end portion of the pad 70, and the end portion 514A faces the left and right outer surfaces of the pad 70. The inner fixing portion 514 has a hook 82 at the end portion 514A that can be engaged with the engaging hole 213 of the second bracket 200. The hook 82 is hooked from the left and right outer sides to the first edge portion 213A (see FIG. 3) of the engaging hole 213, whereby the skin member 80 has the inner fixing portion 514 of the first skin member 510 as the base member BA. It is fixed to the second bracket 200 of.

The outer fixing portion 515 extends rearward from the left and right outer ends of the front cover portion 512. The outer fixing portion 515 has a hook 81 as an engaging portion that can be engaged with the second wire 22 of the wire frame 20 at the end portion 515A. The hook 81 is hooked from the left and right outside to the skin attachment portion 22F of the second wire 22, whereby the outer fixing portion 515 of the first skin member 510 is fixed to the wire frame 20 of the base member BA in the skin member 80. Has been done. The hooks 81 and 82 are attached to the ends 514A and 515A by sewing or adhering them.

The front wall 71 and the upper wall 72 of the pad 70 are formed with recesses 77 capable of receiving hooks 81 at the edges corresponding to the skin mounting portion 22F of the second wire 22, respectively (see also FIG. 5). .. Further, the front wall 71 of the pad 70 has a concave portion 78 capable of receiving a part of the skin member 80 on the outer side of the convex portion 75 in the left-right direction of the vehicle, specifically, on the left-right outer side of the first convex portion 75A. It is formed along the first convex portion 75A (see also FIG. 5). The recesses 77 and 78 have a shape of being recessed inward on the left and right, thereby opening to the outside on the left and right. A part of the skin member 80 that enters the recess 78 is, for example, an end portion 515A of the outer fixing portion 515, specifically, a portion of the end portion 515A behind the recess 77.

The third cover portion 531 is a portion that covers the left and right outer sides and the rear side of the airbag module 10, and extends toward the rear side from the end portion 515A of the outer fixing portion 515. Specifically, the third cover portion 531 has a front end portion sewn to the end portion 515A. A hook-shaped engaging member 532 is attached to the rear end portion of the third cover portion 531 by sewing or adhering.

The fourth cover portion 541 extends laterally to the left and right from the rear end portion of the inner cover portion 511. Specifically, the fourth cover portion 541 is sewn to the inner fixing portion 514 whose left and right inner ends extend from the rear end of the inner cover portion 511. The fourth cover portion 541 is arranged on the rear side of the airbag module 10. The fourth cover portion 541 is connected to the third cover portion 531. Specifically, a flat plate-shaped engaged member 542 is attached to the left and right outer ends of the fourth cover portion 541 by sewing or adhering, and the engaged member 542 is attached. It is connected to the third cover portion 531 by engaging with the engaging member 532 of the third cover portion 531.

The second skin member 520 has a second cover portion 521 that covers the inner cover portion 511 of the first skin member 510. As shown in FIG. 15A, the second cover portion 521 is a portion forming the inner side surface 1S of the side airbag device 1, and the front end portion and the upper end portion are formed on the front end portion and the upper end portion of the inner cover portion 511. It is sewn. The second cover portion 521 has a second hole 526 through which the striker 350 is inserted while the side airbag device 1 is attached to the vehicle body.

The wire fastener 550 is a member for fastening the second cover portion 521 of the second skin member 520 to the first skin member 510, and is provided on the first skin member 510 and the second skin member 520. Specifically, as shown in FIG. 15B, the wire fastener 550 has a pair of elements 551 and one slider 552, one of which is attached to the inner cover portion 511 of the first skin member 510. The other element 551 is attached to the second cover portion 521 of the second skin member 520. As shown in FIG. 15A, the line fastener 550 is arranged along the rear end of the inner side surface 1S. Specifically, in the wire fastener 550, one element 551 is arranged along the rear end portion of the inner cover portion 511, and the other element 551 is arranged along the rear end portion of the second cover portion 521. There is.

As shown in FIG. 16, a plate member 560 is attached to the inner cover portion 511 of the first skin member 510, and a cloth-like member 570 is attached to the second cover portion 521 of the second skin member 520. ..

The plate member 560 is a plate-shaped member made of resin, and has a pair of insertion holes 561 through which a pair of first rod-shaped portions 351 of the striker 350 are inserted and a pair of insertion holes 561 between the pair of insertion holes 561. It has a cut 562 provided so as to connect. By having the cut 562, the plate member 560 can pass the second rod-shaped portion 352 of the striker 350, whereby the pair of first rod-shaped portions 351 can be inserted into the pair of insertion holes 561. The plate member 560 is attached to the peripheral portion of the first hole 516 of the inner cover portion 511 by sewing or adhering from the left and right outside.

Like the skin member 80, the cloth-like member 570 is made of cloth, leather, or the like. The cloth-shaped member 570 is a portion between the pair of first rod-shaped portions 351 of the striker 350 inserted into the second hole 526 of the second cover portion 521, and more specifically, the plate member 560 attached to the inner cover portion 511. It has a blindfold portion 571 that covers a portion (cut 562) between the pair of insertion holes 561. The blindfold portion 571 is exposed to the vehicle interior side from the second hole 526. The cloth-like member 570 is attached to, for example, the upper part of the second hole 526 by sewing or adhering it from the left and right outside in the portion around the second hole 526 of the second cover portion 521. ing.

Next, an example of an assembly method (manufacturing method) of the side airbag device 1 and a method of attaching the side airbag device 1 to the vehicle body will be described.
As shown in FIG. 3, first, the second bracket 200 and the wire frame 20 are fixed by welding to form the base member BA. Next, the base member BA is arranged in a mold (not shown), and the pad 70 is integrally molded with the base member BA as shown in FIG.

Next, the front end portion of the force cloth 30 is connected to the first skin member 510 of the skin member 80. Then, the pad 70 is covered with the skin member 80 (first skin member 510), and the skin member 80 is fixed to the second bracket 200 and the wire frame 20. Specifically, the hook 82 attached to the end portion 514A of the inner fixing portion 514 is hooked on the engaging hole 213 of the second bracket 200, and the hook 81 attached to the end portion 515A of the outer fixing portion 515 is hooked to the wire frame. Hook on the skin mounting portion 22F of 20.

Next, the force cloth 30 (the first force cloth 31 and the second force cloth 32) is passed from the front to the back of the slit 71A of the pad 70 (force cloth insertion step). As a result, as shown in FIG. 17, the force cloth 30 extends later from the front wall 71 of the pad 70. After that, the first attachment wire 40 is passed through the ring portion R2 of the second force cloth 32 to attach the first attachment wire 40 to the second force cloth 32, and the second attachment wire 50 is attached to the ring portion of the first force cloth 31. The second attachment wire 50 is attached to the first force cloth 31 through R1. Then, the hook 35 of the second force cloth 32 is hooked on the engagement hole 213 of the second bracket 200. As a result, the left and right inner portions of the upper edge of the loop portion 30A provided in the lower portion of the second force cloth 32 are maintained in a state where the upper edge is open along the second bracket 200. Further, the first mounting wire 40 is arranged on the left and right outside of the second bracket 200 so as to pass through the left and right outside of the second bracket 200.

Further, as shown in FIG. 3, the airbag module 10 is attached to the first bracket 100 (module attachment step). Specifically, the two bolts 12B are passed through the fixing holes 111 of the first bracket 100, and the nuts 12N are fastened. Further, as shown in FIG. 13, the harness 400 extending from the airbag module 10 and the connector 450 provided at the end of the harness 400 are attached to the first bracket 100 (harness attachment step). Specifically, the harness 400 is routed inward to the left and right through the rear side of the first bracket 100, and the clip 441 attached to the first end portion 411 of the first portion 410 is engaged with the fixing hole 121 of the first bracket 100. Further, the clip 442 attached to the second end portion 412 of the first portion 410 is engaged with the fixing hole 131 of the first bracket 100. Further, the harness 400 is pulled out to the left and right outside through the front side of the first bracket 100, and the clip 460 attached to the connector 450 is engaged with the fixing hole 132 of the first bracket 100.

Then, as shown in FIG. 17, the upper portion of the force cloth 30 is opened to the left and right, and the lower end portions of the airbag module 10 and the first bracket 100 are inserted into the loop portion 30A of the force cloth 30. Then, as shown in FIG. 11, the first curved portion 44 of the first mounting wire 40 attached to the second force cloth 32 is hooked on the wire engaging portion 61A of the fixing wire 60 fixed to the first bracket 100. Engage (second mounting step). Next, with respect to the first posture (see FIG. 6) in which the first bracket 100 is fixed to the second bracket 200 (case 2), the rear end portion is rotated left and right outward by a predetermined angle θ with the front end portion as the center. The second posture is moved. Then, the second mounting wire 50 attached to the first force cloth 31 is pulled backward through the left and right outer sides of the airbag module 10 and the first bracket 100, and the second curved portion 54 is pulled back through the wire engaging portion 61A and the first bracket 100. It is hooked on the curved portion 44 and engaged (first mounting step).

Next, the first bracket 100 is rotated from the second posture shown in FIG. 11 to the left and right inward around the front end portion thereof, and as shown in FIG. 6, the first bracket is substantially along the front-rear direction. Take a posture. As a result, the first force cloth 31 can be brought into an appropriately stretched state. Further, when rotating the first bracket 100, as shown in FIG. 3, the tongue portion 152 of the first bracket 100 is inserted into the engagement hole 234 of the second bracket 200. After that, the first bracket 100 is fixed to the second bracket 200 (case 2) (bracket fixing step). Specifically, the bolt 91B is passed through the fixing hole 161 and the hole 218 (see FIG. 17) from the left and right outside, and fastened to the nut 91N.

Next, as shown in FIG. 6, the airbag module 10 and the like exposed at this stage are covered with the third cover portion 531. Specifically, the third cover portion 531 is pulled backward through the left and right outside of the airbag module 10, the fourth cover portion 541 is pulled to the left and right outside, and the engaged member 542 is engaged with the engaging member 532.
By the above steps, the side airbag device 1 can be manufactured. The above steps may be performed by changing the order as appropriate.

When the side airbag device 1 is attached to the vehicle body, first, as shown in FIG. 2, the airbag attachment bracket 340 and the base bracket 360 to which the striker 350 is fixed are fixed to the side panel 300. Further, as shown in FIG. 15B, the line fastener 550 of the skin member 80 is left open. At this time, the fixing hole 211 of the second bracket 200 is exposed from the first opening 517A of the first skin member 510, and the fixing hole 233 is exposed from the second opening 517B.

Then, the side airbag device 1 is arranged at the mounting position of the side panel 300. Specifically, the side airbag device 1 is brought closer to the side panel 300 from the left and right inside, and as shown in FIG. 16, a pair of strikers 350 are passed through a cut 562 of a plate member 560 attached to the first skin member 510. It is inserted into the insertion hole 561 and the first hole 516. Further, as shown in FIG. 3, the bolt 92B fixed to the base bracket 360 is inserted into the fixing hole 171 of the first bracket 100 and the fixing hole 211 of the second bracket 200.

Then, the nut 92N is fastened to the bolt 92B of the base bracket 360, and the bolt 93B is connected to the fixing hole 233 of the second bracket 200, the fixing hole 151 of the first bracket 100, and the hole 341 of the airbag mounting bracket 340 from the left and right inside. It is threaded and fastened to the nut 93N fixed to the airbag mounting bracket 340.

Then, as shown in FIGS. 15 (b) to 15 (a), the striker 350 is inserted into the second hole 526 of the second skin member 520, and then the slider 552 is slid to close the line fastener 550 and inside. The cover portion 511 is covered with the second cover portion 521.
Through the above steps, the side airbag device 1 can be attached to the vehicle body.

The operation and effect of the side airbag device 1 of the present embodiment as described above will be described.
When fixing the first force cloth 31, the second attachment wire 50 attached to the first force cloth 31 while bending the first force cloth 31 in the second posture in which the first bracket 100 is rotated by a predetermined angle. Can be engaged with the wire engaging portion 61A of the first bracket 100, so that the first force cloth 31 can be easily fixed. Then, by fixing the first bracket 100 to the case 2 in the first posture, the first force cloth 31 can be brought into an appropriately stretched state. As a result, when the airbag 11 is deployed, the deployment direction of the airbag 11 can be satisfactorily regulated by the first force cloth 31, so that the airbag 11 can be satisfactorily deployed.

Further, since the first mounting wire 40 is arranged so as to pass through the side opposite to the airbag module 10 of the first bracket 100, the airbag 11 and the second force cloth 32 are fixed when the airbag 11 is deployed. It is possible to suppress the contact with the first mounting wire 40 for the purpose. As a result, the airbag 11 can be satisfactorily deployed.

Further, since the first mounting wire 40 is arranged at a position different from that of the bolt 12B when viewed from the left-right direction, the first mounting wire 40 attached to the second force cloth 32 is used when fixing the second force cloth 32. It does not easily interfere with the bolt 12B of the inflator 12. Therefore, the second force cloth 32 can be easily fixed.

Further, since the convex portion 75 is provided on the rear surface 71B of the front wall 71 of the pad 70, when a load is applied to the front wall 71 of the pad 70 from the front side, the front wall 71 of the pad 70 is passed through the convex portion 75. It can be supported by the airbag module 10. As a result, it is possible to prevent the front wall 71 from being deformed more than necessary, so that the seating feeling of the seat S provided with the side airbag device 1 can be improved.

Further, since the convex portions 75 are provided on both the left and right sides of the slit 71A, the airbag 11 first expands the left and right convex portions 75 when the airbag 11 is deployed, and then uses this as a foothold to expand the slit 71A as it is. Can be deployed. That is, by providing the convex portions 75 on the left and right sides of the slit 71A, the area of the portion of the pad 70 that is expanded by the airbag 11 can be increased when the airbag 11 is deployed, so that the slit 71A is expanded. It can be made easier. As a result, the airbag 11 can be satisfactorily deployed.

Further, since the convex portion 75 is provided at the central portion in the vertical direction away from the upper end and the lower end of the slit 71A, the area of the portion of the pad 70 that is expanded by the airbag 11 is large in the central portion in the vertical direction of the slit 71A. Become. As a result, as compared with the case where the convex portion 75 is provided at the upper end or the lower end of the slit 71A, the left and right convex portions 75 can be easily expanded when the airbag 11 is deployed, so that the slit 71A can be more easily expanded. And the airbag 11 can be deployed better.

Further, since there is no step between the side surfaces F11 and F12 of the convex portion 75 and the inner surfaces F21 and F22 of the slit 71A, when the airbag 11 is deployed, the airbag 11 moves from the side surfaces F11 and F12 of the convex portion 75 to the slit 71A. It can be satisfactorily deployed on the front side of the front wall 71 via the inner surfaces F21 and F22 of the above. As a result, the airbag 11 can be deployed more satisfactorily.

Further, since the first convex portion 75A is covered with the first force cloth 31, the first force cloth 31 is interposed between the airbag 11 and the first convex portion 75A (pad 70). It is possible to prevent the airbag 11 and the pad 70 from coming into direct contact with each other when the airbag 11 is deployed. Further, since the first force cloth 31 covers the first convex portion 75A and heads toward the slit 71A, when the airbag 11 is deployed, the airbag 11 first forces the first force from the first convex portion 75A to the inner surfaces F21 and F22 of the slit 71A. Since the airbag 11 is deployed along the cloth 31, the airbag 11 can be deployed more satisfactorily.

Further, since the second convex portion 75B is covered with the second force cloth 32, the second force cloth 32 is interposed between the airbag 11 and the second convex portion 75B (pad 70). It is possible to prevent the airbag 11 and the pad 70 from coming into direct contact with each other when the airbag 11 is deployed. Further, since the second force cloth 32 covers the second convex portion 75B and heads toward the slit 71A, the airbag 11 moves from the second convex portion 75B to the inner surfaces F21 and F22 of the slit 71A when the airbag 11 is deployed. Since the airbag 11 is deployed along the cloth 32, the airbag 11 can be deployed more satisfactorily. In particular, in the present embodiment, since the first convex portion 75A is covered with the first force cloth 31 and the second convex portion 75B is covered with the second force cloth 32, the airbag 11 is deployed when the airbag 11 is deployed. 11 can be developed more satisfactorily.

Further, since the rear surface 71B of the front wall 71 has a shape in which both the rear surface lower portion 71C and the rear surface upper portion 71D are recessed in the front side with respect to the convex portion 75, the volume of the pad 70 can be reduced. As a result, the weight of the pad 70 can be reduced, so that the side airbag device 1 provided with the pad 70 can be reduced in weight.

Further, by accommodating the end portion 515A which is a part of the skin member 80 in the recess 78 provided in the front wall 71 of the pad 70, the vicinity of the end portion 515A of the skin member 80 is largely less likely to protrude to the outside of the case 2. As a result, the appearance shape of the case 2 can be made clear, so that the appearance of the side airbag device 1 can be improved.

Further, since the force cloth 30 has the loop portion 30A at the lower portion, by inserting the lower end portion of the airbag module 10 into the loop portion 30A, it is easy to align the airbag module 10 with respect to the case 2, and with respect to the case 2. Easy to assemble the airbag module 10. On the other hand, the force cloth 30 is not entirely loop-shaped, but only a part of the lower side is loop-shaped, and the upper side is the first force cloth upper part 31A and the second force cloth upper part 32A. Since it is divided into two parts, the upper part 31A of the first force cloth and the upper part 32A of the second force cloth can be separated and opened. Therefore, it is easy to insert the airbag module 10 between the first force cloth upper portion 31A and the second force cloth upper portion 32A and to insert the lower end portion of the airbag module 10 into the loop portion 30A. That is, the assembly work of the side airbag device 1 can be facilitated.

Then, after inserting the lower end portion of the airbag module 10 into the loop portion 30A, the first mounting wire 40 and the second mounting wire 50 are fixed to the fixing wire 60, whereby the first force cloth upper portion 31A and the second The rear end of the upper wire 32A can be fixed. Therefore, the upper part of the force cloth 30 which is divided into the left and right can be firmly fixed, and the deployment direction of the airbag 11 can be surely regulated by the force cloth 30.

Further, since the bolt 12B of the inflator 12 is located at a position different from the second force cloth lower portion 32B (loop portion 30A) in the longitudinal direction of the inflator 12, it is not necessary to penetrate the bolt 12B through the second force cloth lower portion 32B. Therefore, it is easy to insert the airbag module 10 into the loop portion 30A.

Further, the bolt 12B of the inflator 12 is located at a position overlapping the upper portion 32A of the second force cloth in the longitudinal direction of the inflator 12, but the first mounting wire 40 is arranged so as not to interfere with the bolt 12B. It is easy to perform the work of fixing the force cloth 31 with the first mounting wire 40.

Further, since the lower end portion of the first bracket 100 overlaps with the loop portion 30A when viewed from the left and right direction, after inserting the airbag module 10 into the loop portion 30A, the lower end portion of the first bracket 100 and the loop portion 30A By looking at the positional relationship of, it is possible to confirm whether the airbag module 10 has been assembled correctly.

Further, since the lower end portion of the airbag module 10 is positioned at the loop portion 30A, it is easy to insert the airbag module 10 into the loop portion 30A.

Further, since the airbag module 10 may be assembled so as to be inserted into the loop of the loop portion 30A from above, the assembling property is good.

Further, since the upper edges of the left and right inner portions (second force cloth lower portion 32B) of the loop portion 30A are fixed to the case 2 by the hook 35, the mouth of the loop portion 30A can be easily opened, and the airbag module 10 is attached to the loop portion 30A. Easy to insert. In particular, in the present embodiment, since the upper edge of the loop portion 30A is fixed to the case 2, the mouth of the loop portion 30A opens upward, and it is easy to insert the airbag module 10 into the loop portion 30A.

Further, since the connecting portion 33B, which is a portion connected to the hook 35 of the second force cloth 32, becomes wider as the distance from the hook 35 increases, a wide range of the edge of the loop portion 30A can be opened, and air can be provided to the loop portion 30A. Easy to insert the bag module 10.

Further, since the skin mounting portion 22F of the second wire 22 is arranged at a position closer to the inside of the case 2 than the first wire 21, the hook 81 in a state of being engaged with the skin mounting portion 22F is outside the case 2. It is possible to suppress a large protrusion. As a result, the appearance shape of the case 2 can be made clear, and the appearance of the side airbag device 1 can be improved.

Further, since the hook 81 does not protrude significantly to the outside of the case 2, it is possible to suppress the increase in size of the side airbag device 1 and make it compact. Further, since the harness 400 is arranged in the case 2 or, more specifically, in the space formed by being surrounded by the wire frame 20 and the second bracket 200 and does not project out of the case 2, the size of the side airbag device 1 is increased. Can be suppressed and made compact.

Further, since the pad 70 has a recess 77 capable of receiving the hook 81, the hook 81 is less likely to protrude from the pad 70, and the appearance shape of the case 2 can be made more beautiful. Thereby, the appearance of the side airbag device 1 can be improved.

Further, since the bent convex portion 22G, which is a portion between the two adjacent skin mounting portions 22F of the second wire 22, is fixed to the first wire 21, the hook 81 can be attached to the first wire 21 of the second wire 22. Can be engaged near a rigid portion fixed to. As a result, the skin member 80 can be firmly fixed to the wire frame 20.

Further, the front extending portion 22D of the second wire 22 is arranged at a position closer to the inner side in the left-right direction of the case 2 than the front frame portion 21D of the first wire 21 when viewed from the front side, and the front frame portion 21D. Therefore, the hook 81 can be engaged with the second wire 22 near the surface of the case 2 while suppressing the hook 81 from protruding significantly to the outside of the case 2. As a result, the skin member 80 can be easily attached to the wire frame 20.

Further, in the harness 400, the first portion 410 is arranged on the side opposite to the side where the airbag module 10 of the first bracket 100 is arranged, and the second portion 420 is deployed by the airbag 11 of the first bracket 100. Since it is connected to the first portion 410 through the side opposite to the side, it is possible to prevent the airbag 11 and the harness 400 from coming into contact with each other when the airbag 11 is deployed.

Further, since the first portion 410 is arranged between the first bracket 100 and the second bracket 200, the first bracket 100 and the second bracket 200 can protect the first portion 410 of the harness 400.

Further, since the first bracket 100 has the harness facing portion 120 that bulges to the left and right, the first bracket 100 is formed with an uneven shape, so that the rigidity of the first bracket 100 can be improved. Since the first portion 410 is arranged between the harness facing portion 120 and the second bracket 200, the first portion 410 of the harness 400 can be effectively protected by the first bracket 100 having improved rigidity. ..

Further, since the ends 411 and 412 of the first portion 410 are fixed to the first bracket 100, it is possible to suppress the movement of the first portion 410. Thereby, the first portion 410 of the harness 400 can be effectively protected between the first bracket 100 and the second bracket 200.

Further, since the connector 450 is arranged on the side where the airbag module 10 of the first bracket 100 is arranged, that is, on the side opposite to the side of the second bracket 200, wiring when the side airbag device 1 is attached to the vehicle body. Easy to work with. Further, since the third portion 430 of the harness 400 can be pulled out toward the connector 450 from a position farther from the inflator 12 than the harness facing portion 120 to the side where the airbag module 10 is arranged, air can be pulled out when the airbag 11 is deployed. It is possible to prevent the bag 11 from coming into contact with the third portion 430 of the harness 400.

Further, since the connector fixing portion 130 has a bent flange 133 at the front end portion facing the third portion 430, it is possible to prevent the third portion 430 from coming into contact with the edge portion of the first bracket 100. Thereby, the third portion 430 of the harness 400 can be protected.

Further, since the skin member 80 includes the second skin member 520 including the second cover portion 521, the second cover portion 521 provides the inner cover portion 511 of the first skin member 510 and the inner cover of the base member BA and the pad 70. The portion exposed from the portion 511 can be covered. Further, since the first skin member 510 has the inner cover portion 511, the wire fastener 550 provided on the first skin member 510 is pulled by fixing the inner fixing portion 514 of the first skin member 510 to the base member BA. However, it is possible to suppress the displacement of the position, and it is possible to suppress the displacement of the second cover portion 521 when the second cover portion 521 and the first skin member 510 are fastened by the wire fastener 550. it can. Thereby, the appearance of the inner side surface 1S of the side airbag device 1 can be improved.

Further, since the plate member 560 is attached to the inner cover portion 511, the plate member 560 can cover and hide the gap between the pair of first rod-shaped portions 351 of the striker 350. Thereby, the appearance of the inner side surface 1S of the side airbag device 1 can be improved.

Further, since the cloth-like member 570 is attached to the second cover portion 521, the cloth-like member 570 can cover and hide the cut 562 of the plate member 560. Thereby, the appearance of the inner side surface 1S of the side airbag device 1 can be further improved. Further, it is possible to prevent foreign matter from entering the side airbag device 1 or the like from between the pair of first rod-shaped portions 351 of the striker 350.

Further, since the inner cover portion 511 has an opening 517 that exposes the vehicle body fixing portions 210A and 232 of the base member BA, the side airbag device 1 can be attached to the vehicle body from the left and right inside. This facilitates the installation work of the side airbag device 1. After the side airbag device 1 is attached to the vehicle body, the vehicle body fixing portions 210A and 232 can be covered and hidden by the second cover portion 521. Therefore, the appearance of the inner side surface 1S of the side airbag device 1 is good. Secured.

Further, since the base member BA has the first vehicle body fixing portion 210A and the second vehicle body fixing portion 232 and the opening 517 includes the first opening 517A and the second opening 517B, it is easy to install the side airbag device 1. At the same time, the side airbag device 1 can be firmly fixed to the vehicle body by the plurality of vehicle body fixing portions 210A and 232.

Further, since the inner cover portion 511 has a slit hole 518 formed along the ridge line portion 76 of the pad 70, unnecessary force is applied from the inner cover portion 511 covering the pad 70 to the vicinity of the ridge line portion 76 of the pad 70. It can be suppressed. Specifically, as shown in FIG. 18, without the slit hole 518, as shown by the alternate long and short dash line, the skin member stretches straight and a force is applied from the skin member to the pad 70 to crush the vicinity of the ridge line portion 76. However, by having the slit hole 518, it is possible to suppress the application of such a force. As a result, the deformation of the pad 70 can be suppressed, so that the shape of the pad 70 can be made clear, and the appearance of the inner side surface 1S of the side airbag device 1 can be improved.

Further, since the wire fastener 550 is arranged along the rear end portion of the inner side surface 1S, the second cover portion 521 is attached to the first skin member by the wire fastener 550 after the side airbag device 1 is attached to the vehicle body. It can be kept at 510. This facilitates the installation work of the side airbag device 1. Further, the appearance of the inner side surface 1S of the side airbag device 1 can be improved as compared with the case where the line fastener 550 is prominently arranged near the center of the inner side surface 1S in the front-rear direction.

Further, since the skin member 80 includes the third cover portion 531 that covers the left and right outer sides and the rear side of the airbag module 10, the airbag module 10 can be protected by the third cover portion 531. Further, by covering the airbag module 10 with the third cover portion 531, it is possible to improve the appearance of the side airbag device 1 before it is attached to the vehicle body.

Although one embodiment of the invention has been described above, the present invention is not limited to the above-described embodiment, and can be appropriately modified and implemented.
For example, in the above embodiment, the side surfaces F11 and F12 of the convex portion 75 are flush with the inner surfaces F21 and 22 of the slit 71A, but there is a slight step between the side surface of the convex portion and the inner surface of the slit. May be good.

In the above embodiment, the convex portion 75 is provided at the central portion in the vertical direction away from the upper end and the lower end of the slit 71A, but the convex portion may be provided at the upper end portion of the slit or the lower end of the slit. It may be provided in the section.

In the above embodiment, only one first convex portion 75A is provided on the left and right outer sides of the slit 71A, but a plurality of first convex portions may be provided on the left and right outer sides of the slit. When a plurality of first convex portions are provided, the first convex portions may be arranged vertically or horizontally. The same applies to the second convex portion. Further, in the above-described embodiment, the convex portions 75 are provided on both the left and right sides of the slit 71A, but the pad may be configured such that the convex portions are provided only on one side in the left-right direction of the slit.

In the above embodiment, the frame member is a wire frame 20 made of a metal rod, but the frame member may be a plate-shaped frame made of a metal plate or the like. Further, the frame member may be a frame integrated by welding a plate-shaped frame to the wire frame.

In the above embodiment, the wire engaging portion 61A as the engaging portion provided on the first bracket 100 is formed by the fixing wire 60 fixed to the first bracket 100, but the engaging portion is the first. It may be provided directly on the bracket.

In the above embodiment, the second mounting wire 50 is exemplified as the first mounting member, and the first mounting wire 40 is exemplified as the second mounting member, but the mounting member is not a wire but, for example, a hook or the like. May be good.

In the above embodiment, the loop portion 30A is located at the lower part of the force cloth 30, and the airbag module 10 is inserted downward from the upper mouth of the loop portion 30A. However, the airbag module is inserted into the loop portion from below. May be configured to insert. For example, the loop portion may be on the upper part of the cloth. Further, the force cloth may be configured not to have a loop portion.

In the above embodiment, the hook 35 is exemplified as the fixing member, but the fixing member may be a snap button or the like. Further, it is not necessary to provide a fixing member.

In the above embodiment, the third portion 430 of the harness 400 is fixed to the first bracket 100 via the connector 450, but the third portion is the side on which the airbag module of the first bracket is arranged by a clip or the like. It may be fixed to.

In the above embodiment, in the first portion 410 of the harness 400, both the first end portion 411 and the second end portion 412 are fixed to the first bracket 100, but in the first portion, only one end portion is fixed. It may be fixed to the first bracket. Further, the portion between both ends may be fixed to the first bracket.

In the above embodiment, the front extending portion 22D (second extending portion) of the second wire 22 overlaps with the front frame portion 21D (first extending portion) of the first wire 21 when viewed from the front side. The second extending portion may have a configuration that does not overlap with the first extending portion when viewed from the front side.

In the above-described embodiment, the second wire 22 has one portion (bending convex portion 22G) between two adjacent skin attachment portions 22F fixed to the first wire 21, but the second wire is adjacent to the first wire 21. A plurality of portions between the two matching skin attachment portions may be fixed to the first wire.

In the above embodiment, the skin member 80 has a configuration in which the third cover portion 531 covers the left and right outer sides and the rear side of the airbag module 10, but both the third cover portion and the fourth cover portion cover the airbag module. It may be a covering configuration. For example, the third cover portion may cover the left and right outer sides of the airbag module, and the fourth cover portion may cover the rear side of the airbag module. Further, the skin member may have a configuration in which the third cover portion and the fourth cover portion are not provided. Further, the configuration may not include a plate member or a cloth-like member.

In the above embodiment, the vehicle body fixing portions 210A and 232 of the base member BA and the openings 517A and 517B of the inner cover portion 511 of the first skin member 510 are provided, but the vehicle body fixing portion and the opening are provided. Each may be one or three or more.

In the above embodiment, the inner cover portion 511 (first cover portion) is configured to expose both a part of the base member BA and a part of the pad 70, but the first cover portion exposes the pad. Instead, only a part of the base member BA such as the vehicle body fixing portion may be exposed, or the base member may not be exposed and only a part of the pad 70 may be exposed. Further, the first cover portion may not be provided with the slit hole 518 when the surface of the pad on the sheet side is a flat surface without a ridge line portion.

In the above embodiment, the fastener of the skin member 80 is the wire fastener 550, but the fastener may be a snap button, a hook-and-loop fastener, or the like. Further, in the above embodiment, the wire fastener 550 (fastener) is arranged along the rear end of the inner side surface 1S of the side airbag device 1, but the fastener is the air on the inner side surface. It may be arranged along the front end of the bag to unfold. Further, the fastener may be arranged between the front and rear ends of the inner surface surface.

In the above embodiment, the side airbag device 1 is fixed to the vehicle body separately from the seat back portion that can be tilted forward, but is configured as a part of the seat back portion that can be tilted forward or backward. It may have been done.

In the above embodiment, the side airbag device 1 is arranged between the seat back S2 and the side wall BS of the vehicle body, but the side airbag device may be arranged between the seat cushion and the vehicle body. In this case, the side airbag device may have an inner side surface exposed when the seat cushion (seat) is slid back and forth.

Further, in the above embodiment, the example in which the side airbag device is applied to the rear seat of the automobile has been described, but for example, the side airbag device may be applied to the front seat of the automobile, the central seat of the three-row seat, and the like.

In addition, the elements described in the above-described embodiments and modifications can be combined and implemented as appropriate.

1 Side airbag device 2 Case 10 Airbag module 11 Airbag 12 Inflator 20 Wire frame 31 1st force cloth 32 2nd force cloth 70 Pad 71 Front wall 71A Slit 71B Rear surface 71C Rear surface lower part 71D Rear surface upper part 75 Convex part 75A 1st Convex part 75B Second convex part 78 Concave part 80 Skin member F11, F12 Side surface F21, F22 Inner surface

Claims (8)

A side airbag device including an airbag, an airbag module having an inflator for supplying gas into the airbag, and a case for accommodating the airbag module.
The case includes a frame member, a pad covering the frame member, and a frame member and a skin member covering the pad.
The pad is a front wall arranged on the front side of the airbag module, and includes a front wall having a slit through which the airbag exits when the airbag is deployed.
A side airbag device, wherein the front wall has a convex portion on the rear surface that is convex toward the airbag module. The side airbag device according to claim 1, wherein the convex portions are provided on both the left and right sides of the slit. The side airbag device according to claim 2, wherein the convex portion is provided at a central portion in the vertical direction away from the upper end and the lower end of the slit. The side airbag device according to claim 2 or 3, wherein the side surface of the convex portion on the slit side is flush with the inner surface of the slit. It is a first force cloth that regulates the deployment direction of the airbag, and includes a first force cloth that extends from the slit toward the left and right outside of the vehicle.
The convex portion includes a first convex portion provided on the left and right outer sides of the slit.
The side airbag device according to any one of claims 2 to 4, wherein the first convex portion is covered with the first force cloth when viewed from the airbag module side. .. It is a second force cloth that regulates the deployment direction of the airbag, and is provided with a second force cloth that extends from the slit toward the left and right inside of the vehicle.
The convex portion includes a second convex portion provided on the left and right inner sides of the slit.
The side airbag device according to any one of claims 2 to 5, wherein the second convex portion is covered with the second force cloth when viewed from the airbag module side. .. The rear surface of the front wall has a lower rear surface located below the convex portion and an upper rear surface located above the convex portion.
The side according to any one of claims 1 to 6, wherein the convex portion protrudes to the rear side from the lower part of the rear surface and protrudes to the rear side from the upper part of the rear surface. Airbag device. The method according to any one of claims 1 to 7, wherein the front wall has a concave portion that can accept a part of the skin member on the outside of the convex portion in the left-right direction of the vehicle. Side airbag device.

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