JP2021066251A - Side airbag device - Google Patents

Abstract

To provide a side airbag device capable of improving the rigidity of a frame and being made longitudinally compact in structure.SOLUTION: A side airbag device 1 includes an airbag module 10 having an airbag 11 and an inflator 12 and a case 2 for storing the airbag module 10. The case 2 includes a base member BA, a pad for covering the base member BA, and a skin member for covering the base member BA and the pad. The base member BA has a first frame part F1 positioned in one of the right and left sides of the airbag module 10, a second frame part F2 positioned on the other side of the right and left sides of the airbag module 10, and a third frame part F3 positioned below the airbag module 10 to connect the first frame part F1 and the second frame part F2. The third frame part F3 is arranged in front of a rear end of the inflator 12 behind a front end of the airbag 11.SELECTED DRAWING: Figure 3

Description

The present invention relates to a side airbag device.

As a side airbag device, an airbag, an inflator that supplies gas into the airbag, and a base member that accommodates the airbag and the inflator and is fixed to the vehicle body are known (Patent Document 1). .. In this technique, the base member comprises a wireframe made of metal rods. The bridge connecting the lower edge of the outer wire frame and the lower edge of the inner wire frame of the wire frame is located below the airbag module and behind the center of the main body of the inflator. positioned.

Japanese Unexamined Patent Publication No. 2019-085035

By the way, in the side airbag device, it is desired that the rigidity of the frame can be improved and the structure can be made compact. In addition, it may be desired that the left and right frames do not spread to the left and right when the airbag is deployed.

Therefore, an object of the present invention is to provide a side airbag device capable of improving the rigidity of the frame and having a compact structure in the front-rear direction.
Another object of the present invention is to prevent the left and right frames from being deformed so as to spread to the left and right when the airbag is deployed.
Another purpose is to reduce the man-hours for manufacturing the frame.
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, a pad covering the frame, and a skin member covering the frame and the pad, and the frame is a first frame portion located on one of the left and right sides of the airbag module. And a second frame portion located on the left and right sides of the airbag module, and a third frame portion located below the airbag module and connecting the first frame portion and the second frame portion. However, the third frame portion is characterized in that it is arranged behind the front end of the airbag and in front of the rear end of the inflator.

According to such a configuration, since the frame has a third frame portion that connects the lower portions of the first frame portion and the second frame portion to each other, the rigidity of the frame can be improved. Further, since the third frame portion is arranged behind the front end of the airbag and in front of the rear end of the inflator, the side airbag device can be made compact in the front-rear direction. Further, since the portion close to the front side of the first frame portion and the second frame portion can be connected by the third frame portion, the first frame portion and the second frame portion are deformed so as to spread to the left and right when the airbag is deployed. Can be suppressed.

In the side airbag device described above, the third frame portion may be arranged in front of the central axis of the inflator.

According to this, since the front side of the first frame portion and the second frame portion can be connected by the third frame portion, the first frame portion and the second frame portion are spread to the left and right when the airbag is deployed. Deformation can be further suppressed.

In the side airbag device described above, the frame is located above the airbag module and in front of the central axis of the inflator, and connects the first frame portion and the second frame portion. It can be configured to have a frame portion.

According to this, since the first frame portion and the fourth frame portion that connects the upper portions of the second frame portion are provided, the rigidity of the frame can be further improved. Further, the third frame portion and the fourth frame portion can further suppress the deformation of the first frame portion and the second frame portion so as to spread to the left and right when the airbag is deployed.

In the side airbag device described above, at least one of the first frame and the second frame has a first plate-shaped portion, and the first plate-shaped portion is a reinforcing convex portion that is convex in one direction in the left-right direction. The third frame portion may be connected to the first plate-shaped portion behind the reinforcing convex portion.

According to this, since the third frame portion is connected near the portion of the first plate-shaped portion having high rigidity, the rigidity of the frame can be further improved.

In the side airbag device described above, the frame has a first wire frame made of a metal rod, and the first wire frame is formed from a wire side portion constituting the first frame portion and a lower end of the wire side portion. It can be configured to have a lower portion of a wire that bends and extends to the left and right to form the third frame portion.

According to this, since it is not necessary to connect the first frame portion and the third frame portion by welding or the like, the man-hours for manufacturing the frame can be reduced.

In the side airbag device described above, the frame has a plate-shaped frame made of a metal plate, and the plate-shaped frame is bent from the side plate portion constituting the second frame portion and the lower end of the side plate portion to the left and right. It has a lower plate portion extending to the third frame portion and forming the third frame portion, and the lower portion of the wire may be joined to the lower surface of the lower plate portion.

According to this, since the third frame portion can be composed of the lower portion of the wire of the first wire frame and the lower plate portion of the plate-shaped frame, the rigidity of the third frame portion can be improved. Thereby, the rigidity of the frame can be further improved.

The side airbag device is arranged in the case and includes a harness having one end connected to the inflator, and the third frame portion passes through the front end of the harness when viewed from the left and right. It can be configured to be arranged between a first straight line along the longitudinal direction of the harness and a second straight line along the longitudinal direction of the inflator passing through the rear end of the harness.

The side airbag device may be fixed to the vehicle body and arranged between the vehicle body and the seat, and the surface on the seat side may be exposed when the seat is moved.

In the side airbag device described above, the frame may be configured to have a second plate-shaped portion that retains the shape of the side airbag device on the seat side.

According to this, since the fine shape that is difficult to be held by the frame made of the metal rod can be held by the second plate-shaped portion, the shape of the seat side of the side airbag device can be clearly obtained. As a result, the appearance of the side airbag device can be improved.

In the side airbag device described above, at least one of the first frame and the second frame has a third plate-shaped portion, and the third plate-shaped portion is located at the lower end portion and below the other portion. The third frame portion may have a protruding lower end protruding portion and may be connected to the lower end portion of the third plate-shaped portion behind the lower end protruding portion.

According to the present invention, the rigidity of the frame can be improved, and the side airbag device can be made compact in the front-rear direction. In addition, it is possible to prevent the first frame portion and the second frame portion from being deformed so as to spread to the left and right when the airbag is deployed.

Further, by arranging the third frame portion in front of the central axis of the inflator, it is possible to further suppress the deformation of the first frame portion and the second frame portion so as to spread to the left and right when the airbag is deployed. ..

Further, since the frame has the fourth frame portion, the rigidity of the frame can be further improved. Further, it is possible to further suppress the deformation of the first frame portion and the second frame portion so as to spread to the left and right when the airbag is deployed.

Further, by connecting the third frame portion to the first plate-shaped portion behind the reinforcing convex portion of the first plate-shaped portion, the rigidity of the frame can be further improved.

Further, since the first wire frame has a wire side portion and a wire lower portion, the man-hours for manufacturing the frame can be reduced.

Further, by joining the lower part of the wire to the lower surface of the lower plate portion of the plate-shaped frame, the rigidity of the frame can be further improved.

Further, since the frame has the second plate-shaped portion, 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 (a) of the side airbag device passing through the upper part of the force cloth, and the enlarged view (b) showing the burr of the bracket. 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. It is a figure which looked at the 1st mounting wire, the 2nd mounting wire and the fixing wire from the left and right outside. 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. In the side airbag device 1, when the seat back S2 is tilted forward, the inner side surface 1S (see FIG. 16A), which is the surface on the seat S side, is exposed. 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. 6A) 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, in the airbag mounting bracket 340, nuts 93N are fixed to the left and right outer surfaces by welding.

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. The striker 350 is a member for locking the seat back S2 of the seat S to the vehicle body in an upright state. As shown in FIG. 2B, the striker 350 has a U-shape protruding from the side panel 300 of the vehicle body to the left and right inward, 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 a member for fixing the striker 350 to the vehicle body, and is made of a metal plate. As shown in FIG. 17, the base bracket 360 has a base portion 361 as a main body portion of the base bracket 360, and a bracket engaging portion 362 protruding from the base portion 361 to the left and right inside of the vehicle body.
The base portion 361 is attached to the striker installation portion 330 of the vehicle body.

The bracket engaging portion 362 is formed by bending a part of the metal plate constituting the base bracket 360 inward on the left and right sides of the vehicle body, and has a connecting portion 363 extending inward from the upper end portion of the base portion 361 and a connecting portion. It has an airbag fixing portion 364 extending upward from the left and right inner ends of the 363. The airbag fixing portion 364 has a flat bracket engaging surface 364A at the front end portion to which the positioning portion 230 (see FIG. 5) of the second bracket 200, which will be described later, can be engaged. Further, the airbag fixing portion 364 has a hole 364B through which the bolt 92B (see FIG. 3) is inserted. Further, in the airbag fixing portion 364, nuts 92N are fixed to the left and right outer surfaces by welding.

The striker 350 is fixed to the base portion 361 by welding or the like. Then, as shown in FIGS. 2A and 2B, the base bracket 360 is fixed to the striker installation portion 330 of the vehicle body by a plurality of bolts 370.

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 as a second fixing bracket.

The airbag module 10 includes an airbag 11, an inflator 12 that supplies gas into the airbag 11, and a holding plate 13 that holds the inflator 12. The inflator 12 has two protruding bolts 12B for fixing the inflator 12 to the first bracket 100. The inflator 12 is fixed to the first bracket 100 with the bolt 12B. The holding plate 13 is made of a metal plate and is arranged between the inflator 12 and the first bracket 100. The holding plate 13 is fixed to the first bracket 100 together with the inflator 12 by bolts 12B. A fixing hole 13A to which the first clip 440 (see FIG. 4) for fixing the harness 400, which will be described later, is engaged is provided at the upper end portion of the holding plate 13. 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 as a frame, a pad 70 covering the base member BA (see FIG. 6A), and a skin member 80 covering the base member BA and the pad 70 (see FIG. 6A). I have.

The base member BA is a member fixed to the vehicle body, and includes a plate-shaped frame, a second bracket 200 as a first fixing bracket, 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 fixed, and is made of a metal plate. The second bracket 200 has a side plate portion 210, a lower plate portion 220, a positioning portion 230, and a notch portion 240. In the present embodiment, the side plate portion 210 corresponds to the "first plate-shaped portion", the "second plate-shaped portion", and the "third plate-shaped portion".

The notch 240 is formed on the rear edge of the upper part of the side plate 210. The notch 240 is a portion through which the striker 350 passes.

The side plate portion 210 holds the shape of the side airbag device 1 on the left and right inside (inner side surface 1S (see FIG. 16A)). The side plate portion 210 has a first vehicle body fixing portion 270 and a second vehicle body fixing portion 250, a bracket fixing portion 260, a bracket engaging hole 252, and an engaging hole 213 as vehicle body fixing portions fixed to the vehicle body. doing.
The first vehicle body fixing portion 270 is a portion fixed to the base bracket 360 attached to the vehicle body, and is provided on the upper portion of the side plate portion 210, specifically, the upper portion of the notch portion 240. The first vehicle body fixing portion 270 is formed with a fixing hole 271 used for fixing the side airbag device 1 to the vehicle body.

The second vehicle body fixing portion 250 is a portion fixed to the airbag mounting bracket 340 attached to the vehicle body, and is provided below the side plate portion 210. Therefore, the second vehicle body fixing portion 250 is arranged below the first vehicle body fixing portion 270. Further, the lower portion of the side plate portion 210 has an inclined portion 210B extending diagonally so as to be located on the left and right outer sides as it goes downward, and a lower end portion 210C extending downward from the lower end of the inclined portion 210B. The fixing portion 250 is provided at the rear portion of the lower end portion 210C. Therefore, the second vehicle body fixing portion 250 is located outside the upper portion of the side plate portion 210 provided with the first vehicle body fixing portion 270 in the left-right direction. The second vehicle body fixing portion 250 is formed with a fixing hole 251 used for fixing the side airbag device 1 to the vehicle body. The fixing hole 251 is a circular hole through which the bolt 93B passes. The second bracket 200 is fastened to the nut 93N fixed to the airbag mounting bracket 340 by the bolt 93B.

The bracket fixing portion 260 is a portion to which the first bracket 100 is fixed, and is provided at a central portion in the vertical direction of the side plate portion 210, specifically, a lower portion of the notch portion 240. A hole 261 (see FIG. 18) is formed in the bracket fixing portion 260, and nuts 91N are fixed to the left and right inner surfaces by welding.
The bracket engaging hole 252 is a hole used when fixing the first bracket 100 to the second bracket 200. Specifically, the bracket engaging hole 252 is a rectangular hole with which the tongue portion 152 provided at the lower end of the first bracket 100 engages. The bracket engaging hole 252 is arranged below the fixing hole 251.

The engagement hole 213 is formed below the bracket fixing portion 260 of the side plate portion 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 forward and backward on the lower side.

Further, the side plate portion 210 has a lower end protruding portion 216, a substantially L-shaped reinforcing convex portion 217, and a bent portion 218 at the lower end portion 210C.
The lower end protruding portion 216 is a portion provided at the front portion of the lower end portion 210C and projecting downward from the other portion of the lower end portion 210C.
The reinforcing convex portion 217 is a portion that is convex in the left-right direction of the second bracket 200, specifically, in the left-right inward direction, and is a portion closer to the front of the lower end portion 210C of the second bracket 200 including the lower end protruding portion 216. It is provided in.
The bent portion 218 is provided at a part of the outer peripheral portion of the second bracket 200, specifically, at the front end portion of the lower end portion 210C of the second bracket 200. The bent portion 218 is bent inward on the left and right sides opposite to the left and right outside on which the airbag module 10 is arranged.

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

The lower plate portion 220 is bent from the lower end of the lower end portion 210C of the side plate portion 210 and extends outward to the left and right. The lower plate portion 220 is provided behind the lower end protruding portion 216 and the reinforcing convex portion 217.

The positioning portion 230 is a portion that can be engaged with the bracket engaging portion 362 of the base bracket 360, and projects from the side plate portion 210 as the main body portion of the second bracket 200 toward the left and right outside of the vehicle body. Specifically, the positioning portion 230 is provided by cutting up a part of the second bracket 200 made of a metal plate to the left and right outside (see also FIG. 5). In the present embodiment, the positioning portion 230 is provided at a position in front of the first vehicle body fixing portion 270. Therefore, the second bracket 200 is fixed to the bracket engaging portion 362 at a position behind the positioning portion 230. The second bracket 200 is fastened to the nut 92N fixed to the base bracket 360 by the bolt 92B. The second bracket 200 and the first bracket 100 are fastened together with the base bracket 360 by the bolt 92B.

As shown in FIG. 13, the positioning unit 230 is arranged behind the airbag module 10. The positioning portion 230 can come into contact with the bracket engaging surface 364A formed at the front end portion of the airbag fixing portion 364 of the base bracket 360 from the front.

Returning to FIG. 3, the wire frame 20 is made of a metal wire (metal rod). The wire frame 20 is fixed to the second bracket 200 by being joined to the second bracket 200 by welding. 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 as a first wire frame, and these four wires 21 to 24 are joined by welding. It is composed of. 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 includes a first wire side portion 21A as a wire side portion formed along the left and right outer contours of the front portion, the upper portion, and the lower portion of the side airbag device 1, and a lower end portion of the first wire side portion 21A. It has a first wire lower portion 21B as a wire lower portion that bends from and extends inward to the left and right. The first wire side portion 21A includes a front frame portion 21D as a first extending portion extending substantially vertically along the longitudinal direction (hereinafter, also simply referred to as “longitudinal direction”) of the inflator 12 extending vertically, and a front frame portion 21A. It has an upper frame portion 21E that bends rearward from the upper end of the frame portion 21D and extends substantially back and forth, and a lower frame portion 21F that bends rearward from the lower end of the front frame portion 21D and extends substantially front and back. The lower portion 21B of the first wire extends inward to the left and right from the rear end of the lower frame portion 21F. The lower portion 21B of the first wire is joined to the lower surface of the lower plate portion 220 of the second bracket 200.

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

One end of the fourth wire 24 is joined to the first wire side portion 21A of the first wire 21, and the other end is joined to the second wire side portion 23A of the third wire 23, whereby the first wire 21 and the first wire 24 are joined. The 3 wires 23 are connected.

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. 6A) can be engaged, and is provided at three locations on the front extending portion 22D and 1 on the upper extending portion 22E. There are places.
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 first wire side portion 21A of the first wire 21. ing. 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 first wire side 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. 6A, 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 (second wire 22). See centerline 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.

As shown in FIG. 3, the base member BA has a first frame portion F1, a second frame portion F2, a third frame portion F3, and a fourth frame portion F4.
The first frame portion F1 is a portion of the base member BA located on the left and right sides of the airbag module 10 and on the left and right outer sides in the present embodiment, and is mainly formed by the first wire side portion 21A of the first wire 21. It is configured.
The second frame portion F2 is a portion of the base member BA located on the left and right sides of the airbag module 10 and on the left and right inside in the present embodiment, and is mainly a side plate portion 210 of the second bracket 200 and a third. It is composed of a second wire side portion 23A of the wire 23.

The third frame portion F3 is a portion of the base member BA that connects the lower portion of the first frame portion F1 and the lower portion of the second frame portion F2, and in the present embodiment, the lower plate portion 220 of the second bracket 200. And the lower part 21B of the first wire of the first wire 21. As shown in FIG. 4, the third frame portion F3 is located below the airbag module 10. The third frame portion F3 is connected to the lower end portion 210C of the side plate portion 210 at a position behind the lower end protruding portion 216 provided on the side plate portion 210 of the second bracket 200. Further, the third frame portion F3 is connected to the side plate portion 210 at a position behind the reinforcing convex portion 217 provided on the side plate portion 210 of the second bracket 200. Further, the third frame portion F3 is arranged behind the front end of the airbag 11 and in front of the rear end of the inflator 12. Further, the third frame portion F3 is arranged in front of the central axis 12C of the inflator 12. Further, the third frame portion F3 has a first straight line L1 along the longitudinal direction of the inflator 12 passing through the front end of the harness 400 and a second straight line L1 along the longitudinal direction passing through the rear end of the harness 400 when viewed from the left and right directions. It is arranged between the straight line L2 and the straight line L2.

The fourth frame portion F4 is a portion of the base member BA that connects the upper portion of the first frame portion F1 and the upper portion of the second frame portion F2, and is composed of the fourth wire 24 in the present embodiment. .. The fourth wire 24 is located above the airbag module 10 and in front of the central axis 12C of the inflator 12.

As shown in FIG. 6A, 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. 6A), through which the airbag 11 for pulling the airbag 11 out of the case 2 passes when the airbag 11 is deployed. It has a slit 71A. The slit 71A extends long in the vertical direction. As shown in FIG. 6A, 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 6A, 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. 6A, 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 is a first force cloth 31 as an outer force cloth that regulates the deployment direction of the airbag 11 from the left and right outside of the vehicle body, and an inner force cloth 31 that regulates the deployment direction of the airbag 11 from the left and right inside of the vehicle body. A second force cloth 32 is provided.

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 vehicle with respect to the airbag 11 (airbag module 10). That is, the first force cloth 31 is arranged so as to pass between the airbag module 10 and the vehicle body (side panel 300). Further, the second force cloth 32 extends from the slit 71A toward the left and right inside of the vehicle, and is arranged on the left and right inside of the vehicle with respect to the first force cloth 31.

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. 6A, the force cloth 30 is fixed to the fixing wire 60 fixed to the first bracket 100 by a connecting member CN as a mounting member, which is different from the force cloth 30. Specifically, the connecting member CN includes a first mounting wire 40 as an inner mounting member and a second mounting member, and a second mounting wire 50 as an outer mounting member and a first mounting member, and has a first force. The cloth 31 and the second force cloth 32 have ring portions R1 and R2 at the rear end portions. 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 18). 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. 6A, 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 inflator 12 (airbag module 10) is fixed, and is made of a metal plate. The first bracket 100 is arranged on the left and right inside of the airbag 11 (airbag module 10). The first bracket 100 is arranged between the second bracket 200 and the vehicle body (side panel 300) (see FIG. 6A). 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. Further, the front end portion of the main body portion 110 is formed with a notch portion 110A forming a shape that is recessed rearward with respect to the upper end portion thereof.

The harness facing portion 120 is a portion that faces the first portion 410 (see FIG. 4) of the harness 400 to the left and right, 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. 14). A fixing hole 121 in which a second clip 450 (see FIG. 14) 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 471 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 with which a third clip 460 (see FIGS. 14 and 15) for fixing the harness 400 to the first bracket 100 is provided is provided in the lower portion of the connector fixing portion 130. Further, a fixing hole 132 in which a fourth clip 470 (see FIG. 15) for fixing the harness 400 to the first bracket 100 together with the connector 471 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 bracket engaging hole 252 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 bracket engagement hole 252 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. Further, on the front side of the fixing hole 171 of the third fixing portion 170, an insertion hole 172 is provided as a through hole penetrating to the left and right through which the positioning portion 230 of the second bracket 200 passes.

As shown in FIG. 4, the first bracket 100 and the second bracket 200 as brackets are arranged at positions overlapping with the airbag module 10 when viewed from the left-right direction. The first bracket 100 and the second bracket 200 are formed by punching out a metal plate. Therefore, as shown in FIG. 6B, the first bracket 100 and the second bracket 200 have burr BR formed by die cutting on the outer peripheral portion thereof, the peripheral edge portion of the hole, and the like. In the first bracket 100 and the second bracket 200, the burr BR is arranged so as to face the left and right inside opposite to the left and right outside where the airbag module 10 is arranged.

Further, the second bracket 200 is insert-molded into the pad 70 together with the wire frame 20 as shown in FIG. 5, and the pad 70 covers a part of the portion of the second bracket 200 on which the burr BR is formed. ing. Specifically, in the present embodiment, the pad 70 includes a trailing edge portion of the first vehicle body fixing portion 270, a peripheral edge portion of the fixing holes 271 and 261 and a trailing edge portion and a lower edge portion of the second vehicle body fixing portion 250. It covers the portion of the second bracket 200 on which the burr BR is formed, excluding the peripheral portion of the fixing hole 251 and the bracket engaging hole 252.

Further, as shown in FIG. 3, the welded portion between the second bracket 200 and the wire frame 20 is arranged so as to be located on the side of the second bracket 200 opposite to the side on which the airbag module 10 is arranged. There is. Specifically, the welded portion W1 between the side plate portion 210 of the second bracket 200 and the third wire 23 is the left and right inside of the side plate portion 210 of the second bracket 200, which is opposite to the left and right outside on which the airbag module 10 is arranged. Located in. Further, as shown in FIG. 4, the welded portion W2 between the lower plate portion 220 of the second bracket 200 and the first wire lower portion 21B of the first wire 21 is the airbag module of the lower plate portion 220 of the second bracket 200. It is located on the lower side opposite to the upper side where the 10 is arranged.

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. In other words, the first attachment wire 40 is a member for attaching the second force cloth 32 to the first bracket 100, and the second attachment wire 50 attaches the first force cloth 31 to the first bracket 100. It is a member for. 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 is a common attachment portion provided on the first bracket 100, and includes a wire attachment portion 61 extending vertically and a pair of connection portions 62 extending forward from the upper and lower ends of the wire attachment portion 61, respectively. It has a pair of fixed portions 63 extending vertically from each front end of the connecting portion 62 so as to approach each other. 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 up and down so that the portions of the mounting wires 40 and 50 that are engaged with the hooking portions 42 and 52, which will be described later, are convex toward the front. It has two wire engaging portions 61A.

The first mounting wire 40 includes a first force cloth mounting portion 41 extending vertically as a force cloth mounting portion, two upper and lower first hooking portions 42 as bracket mounting portions, and an upper end of the first force cloth mounting portion 41. A first extending portion 43 extending rearward from the upper end and connecting to the upper first hooking portion 42, and a first extending portion 43 extending rearward from the lower end of the first force cloth mounting portion 41 and connecting to the lower first hooking portion 42. 1 It has a lower extension portion 44.
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.

The first hooking portion 42 is a portion that is attached to the first bracket 100 (see FIG. 6A) by engaging with the wire attaching portion 61 (wire engaging portion 61A) of the fixing wire 60, and is rearwardly attached. It is curved so that it becomes convex. The first mounting wire 40 is mounted on the first bracket 100 by hooking the first hooking portion 42 on the wire engaging portion 61A of the fixing wire 60 fixed to the first bracket 100. Each end 42E of each first hook 42 bends and extends up and down so as to approach each other.

As shown in FIG. 11, the first lower extending portion 44 extends so as to approach the first upper extending portion 43 as the front side portion moves backward, and the rear side portion extends substantially straight back and forth. 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.

In the first mounting wire 40, the first lower extending portion 44 extends as described above, whereas the first upper extending portion 43 extends substantially straight back and forth toward the upper first hooking portion 42. Therefore, its shape is vertically asymmetric. Specifically, the first mounting wire 40 has an overhanging portion 45 that protrudes downward on one side in the vertical direction, here, on the lower side, and has such an overhanging portion on the upper side. Absent. The overhanging portion 45 constitutes a lower end portion which is a part of the first force cloth mounting portion 41 and a front side portion which is a part of the first lower extending portion 44. With such a configuration, in the first mounting wire 40, the position P41 in the vertical center of the first force cloth mounting portion 41 is one in the vertical direction with respect to the vertical center position P1 of the two upper and lower first hooking portions 42. It is shifted down. Therefore, the first mounting wire 40 has a vertically asymmetrical shape.

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 250 of the 2 bracket 200 is displaced outward in the left-right direction with respect to the side plate portion 210, it is shown in FIG. 6A when the first bracket 100 and the second bracket 200 are combined. As described above, a space is created between the main body portion 110 and the side plate portion 210. A part of the connecting member CN, specifically, a first upper extension (not shown) arranged on the first lower extension 44 and the first lower extension 44 which are a part of the first mounting wire 40. The portion 43 is arranged in the space between the first bracket 100 and the second bracket 200. More specifically, the first upper extension 43 and the first lower extension 44 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. 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 as a force cloth mounting portion, two upper and lower second hooking portions 52 as a bracket mounting portion, and a second force cloth. A second upper extending portion 53 extending inward to the left and right from the upper end of the mounting portion 51 and connecting to the second hooking portion 52 on the upper side, and a second lower extending portion extending inward to the left and right from the lower end of the second force cloth mounting portion 51. It has a second lower extending portion 54 connected to the hooking portion 52.
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.

The second hooking portion 52 is a portion that is attached to the first bracket 100 (see FIG. 6A) by engaging with the wire attaching portion 61 (wire engaging portion 61A) of the fixing wire 60, and is inside the left and right sides. It is curved so that it becomes convex. The second mounting wire 50 is mounted on the first bracket 100 by hooking the second hooking portion 52 on the wire engaging portion 61A of the fixing wire 60 fixed to the first bracket 100. Each end 52E of each second hook 52 bends and extends forward, and is further bent in the vertical direction so as to approach each other.

In a state where the first mounting wire 40 and the second mounting wire 50 are attached to the fixing wire 60 (first bracket 100), the upper and lower two second hooking portions 52 are between the upper and lower two first hooking portions 42. It is located in. Further, in a state where the second hooking portion 52 is engaged with the wire mounting portion 61, the end portion 52E of the second hooking portion 52 is engaged with the end portion 42E of the first hooking portion 42. 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.

As shown in FIG. 11, the second upper extending portion 53 and the second lower extending portion 54 extend so as to approach each other toward the rear. 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 53 of the second mounting wire 50 is longer than the length of the vertically extending portion of the second lower extending portion 54, the shape of the second mounting wire 50 is vertically extended. It is asymmetric. Specifically, the second mounting wire 50 has an upper projecting portion 55 projecting upward and a lower projecting portion 56 projecting downward. The upper overhanging portion 55 constitutes the upper end portion which is a part of the second force cloth mounting portion 51 and the second upper extending portion 53, and the lower overhanging portion 56 is the second force cloth mounting portion 51. It constitutes a lower end portion which is a part and a second lower extension portion 54. The upper overhanging portion 55 projects more than the lower overhanging portion 56. With such a configuration, in the second mounting wire 50, the position P51 at the center of the upper and lower sides of the second force cloth mounting portion 51 is the other in the vertical direction with respect to the position P1 at the center of the upper and lower sides of the two upper and lower hooking portions 52. , Here it is off to the top. Therefore, the second mounting wire 50 has a vertically asymmetrical shape.

The second attachment wire 50 attached to the first force cloth 31 has the first bracket 100 as shown in FIG. 12 from the first posture shown in FIG. 6A 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 the front end portion of the first bracket 100. On the other hand, in the second attachment wire 50 attached to the first force cloth 31, the first force cloth 31 can be almost expanded and contracted with the first bracket 100 fixed to the case 2, as shown in FIG. 6A. Since it cannot be disengaged from the wire engaging portion 61A, it cannot be disengaged. As an example, the predetermined angle θ is preferably 20 °, more preferably 30 °, and even more preferably 40 °.

As shown in FIG. 6A, the first mounting wire 40 and the second mounting wire 50 are within the width of the wire frame 20 in the left-right direction (between the straight line L3 and the straight line L4 shown in FIG. 6A). Have been placed. Specifically, the first mounting wire 40 and the second mounting wire 50 are the second force cloth mounting portion 51 from the left and right inner surfaces of the first lower extending portion 44 (and the first upper extending portion 43) in the left-right direction. The length to the left and right outer surfaces of the third wire 23 is smaller than the length from the left and right inner surfaces of the third wire 23 to the left and right outer surfaces of the first wire 21, and is arranged between the third wire 23 and the first wire 21. Has been done.

As shown in FIG. 13, the bolt 12B on the upper side of the inflator 12 is located at a position different from that of the second force cloth lower portion 32B in the longitudinal direction of the inflator 12. Specifically, the upper bolt 12B is located above the second force cloth lower portion 32B (loop portion 30A). In FIG. 13, the first force cloth 31 is indicated by a two-dot chain line, and the second force cloth 32 is indicated by a one-dot chain line.

Further, the two bolts 12B of the inflator 12 are located at positions overlapping with 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. 6A, the second force cloth upper portion 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 is the bolt 12B. It is arranged so as not to interfere with. 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. 13, 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. On the other hand, as shown in FIG. 6A, the first mounting wire 40 is arranged on the first lower extending portion 44 and the first lower extending portion 44 when viewed from the vertical direction, which is not shown. 1 The upper extension portion 43 is arranged at a position where it overlaps with the bolt 12B. Returning to FIG. 13, the upper bolt 12B is arranged between the first upper extension 43 and the first lower extension 44, and the lower bolt 12B is below the first lower extension 44. Is located in.

Further, one end of the airbag module 10 in the longitudinal direction, specifically, the lower end is covered with a loop portion 30A of the second force cloth lower portion 32B. 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.

Further, as shown in FIG. 4, the first mounting wire 40 is arranged at a position where the first force cloth mounting portion 41 is on the front side of the first bracket 100 and does not overlap with the first bracket 100 when viewed from the left-right direction. Has been done. Specifically, the first force cloth mounting portion 41 is arranged so as to be located at the notch portion 110A formed in the main body portion 110 of the first bracket 100, and the upper end portion of the front end portion of the main body portion 110 is excluded. It is placed before the part.

A harness 400 for supplying electricity to the inflator 12 is connected to the airbag module 10. The harness 400 is arranged in the case 2. One end of the harness 400 is electrically connected to the inflator 12, and the other end is electrically connected to the connector 471 fixed to the first bracket 100. The harness 400 is connected to the other end of the inflator 12 in the vertical direction and extends from the end toward the other end in the vertical direction. Specifically, the harness 400 is connected to the upper end of the inflator 12 and extends upward from the upper end of the inflator 12. 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. 14, 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 side plate 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 the first fixing member and the second clip 450 as the second fixing member, and the second end portion 412 is fixed to the first. It is fixed to the left and right inside of the first bracket 100 by a member and a third clip 460 as a second fixing member.

The second clip 450 has a first holding portion that holds the first end portion 411 that is a part of the harness 400, a holding portion 451 as a second holding portion, and a claw portion 452 that engages with the first bracket 100. Have. The third clip 460 has a first holding portion that holds the second end portion 412 that is a part of the harness 400, a holding portion 461 as a second holding portion, and a claw portion 462 that engages with the first bracket 100. Have. The first end portion 411 is held by the holding portion 451 of the second clip 450, and the claw portion 452 of the second clip 450 is engaged with the fixing hole 121 of the harness facing portion 120 from the left and right inside. 1 Bracket 100 is fixed to the left and right inside. Further, the second end portion 412 is held by the holding portion 461 of the third clip 460, and the claw portion 462 of the third clip 460 is engaged with the fixing hole 131 of the connector fixing portion 130 from the left and right inside. , It is fixed to the left and right inside of the first bracket 100.

The holding portions 451 and 461 of the second clip 450 and the third clip 460 are arranged on the left and right inside of the first bracket 100 on the side opposite to the left and right outside on which the inflator 12 is arranged. Further, the holding portions 451 and 461 are arranged on the left and right outside of the left and right of the second bracket 200 on which the inflator 12 is arranged. Therefore, the holding portions 451 and 461 are arranged between the first bracket 100 and the second bracket 200.

The second portion 420 of the harness 400 is a portion extending from the first end 411 of the first portion 410 and connected to the inflator 12. 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 second portion 420 is fixed to the first bracket 100 by the first clip 440 as the fourth fixing member. The first clip 440 has a holding portion 441 that holds the second portion 420 of the harness 400, and a claw portion 442 that engages with the holding plate 13 of the airbag module 10. The second portion 420 is held by the holding portion 441 of the first clip 440, and the claw portion 442 of the first clip 440 is engaged with the fixing hole 13A (see FIG. 3) of the holding plate 13 from the left and right outside. It is attached to the holding plate 13. The first clip 440 is attached to the holding plate 13 fixed to the first bracket 100, and is fixed to the first bracket 100 via the holding plate 13. As a result, the second portion 420 of the harness 400 is fixed to the left and right outer sides of the first bracket 100 via the holding plate 13 by the first clip 440.

The third portion 430 of the harness 400 is a portion extending from the second end portion 412 of the first portion 410 and connected to the connector 471. 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 471. As shown in FIG. 15, 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 metal plate forming the first bracket 100.

The third portion 430 is fixed to the left and right outside of the first bracket 100 by a fourth clip 470 as a third fixing member. The fourth clip 470 has a connector 471 that holds the third portion 430 by connecting the ends of the third portion 430, and a claw portion 472 that engages with the first bracket 100. The third portion 430, together with the connector 471, engages the claw portion 472 of the fourth clip 470 with the fixing hole 132 (see FIG. 3) of the connector fixing portion 130 from the left and right outside, so that the third portion 430 is placed on the left and right outside of the first bracket 100. It is fixed. The connector 471 is arranged on the left and right outside of the left and right of the first bracket 100, which is the same side as the side on which the inflator 12 is arranged. 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 471.

As shown in FIG. 4, each clip 440 to 470 is a harness fixing member for fixing the harness 400 to the first bracket 100. The entire clip 440 to 470 is arranged outside the deployment locus 11A when the airbag 11 is deployed when viewed from the left-right direction. Specifically, each clip 440 to 470 is arranged as a whole behind the deployment locus 11A of the airbag 11. Further, the first clip 440 (particularly, the holding portion 441 protruding toward the side where the airbag module 10 is arranged) is arranged on the rear side of the airbag 11. Further, the second clip 450, the third clip 460, and the fourth clip 470 are arranged above one end portion (lower end portion of the harness 400) connected to the inflator 12 of the harness 400. Further, the second clip 450, the third clip 460 and the fourth clip 470 are arranged above the airbag module 10.

Further, each clip 440 to 470 is arranged above the hooking portions 42 and 52 of the connecting member CN (mounting wires 40 and 50). Further, each clip 440 to 470 is arranged above the wire engaging portion 61A (see FIG. 10) of the fixing wire 60 fixed to the first bracket 100 to which the hooking portions 42 and 52 are attached. There is.

Further, each clip 440 to 470 is arranged so as to be positioned differently from the striker 350 provided on the vehicle body in the vertical direction or the front-rear direction. Specifically, the first clip 440 and the second clip 450 are arranged below the striker 350, and the fourth clip 470 is arranged above the striker 350. Further, the third clip 460 is arranged in front of the striker 350. On the other hand, as shown in FIG. 14, each clip 440 to 470 is arranged so as to overlap the striker 350 in the left-right direction.

As shown in FIG. 6A, 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. 16B), 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. 16B, the inner cover portion 511 has a first hole 516 through which a 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 250 and 270 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 270 and a second opening 517B that exposes the second vehicle body fixing portion 250.

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. 6A, 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 a frame engaging member that engages with the wire frame 20 in order to fasten the skin member 80 to the wire frame 20. 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 of the skin member 80 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 hook 81 that enters the recess 77 has a U-shaped hook portion 81A that engages with the skin attachment portion 22F of the wire frame 20, and a flat plate shape that extends from one end of the hook portion 81A and to which the end portion 515A of the skin member 80 is attached. It has an epidermis fixing portion 81B. The skin fixing portion 81B extends from the hook 81 toward the side opposite to the side where the airbag module 10 is arranged. Specifically, as shown in FIG. 6A, the skin fixing portion 81B of the hook 81 that engages with the front extending portion 22D of the second wire 22 is different from the rear side on which the airbag module 10 is arranged. It extends toward the front side on the opposite side. The epidermis fixing portion 81B extends diagonally so as to be located on the left and right outer sides as it goes forward. Further, the skin fixing portion 81B (see FIG. 4) of the hook 81 that engages with the upper extending portion 22E of the second wire 22 extends toward the upper side opposite to the lower side on which the airbag module 10 is arranged. ing.

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. 16A, 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. 16B, 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. 16A, 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. 17, 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. 18, 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. 14, the harness 400 extending from the airbag module 10 and the connector 471 provided at the end of the harness 400 are fixed to the first bracket 100. At this time, the harness 400 is attached by the clips 440 to 470 so that the entire clips 440 to 470 including the connector 471 are arranged outside the deployment locus 11A of the airbag 11 when viewed from the left and right direction (see FIG. 4). It is fixed to the first bracket 100 (harness attachment process).

Specifically, the first clip 440 attached to the second portion 420 of the harness 400 is engaged with and attached to the fixing hole 13A (see FIG. 3) of the holding plate 13 of the airbag module 10. Further, the harness 400 is routed inward to the left and right through the rear side of the first bracket 100, and the second clip 450 attached to the first end portion 411 of the first portion 410 is engaged with and attached to the fixing hole 121 of the first bracket 100. .. Further, the third clip 460 attached to the second end portion 412 of the first portion 410 is engaged with and attached to the fixing hole 131 of the first bracket 100. Then, the harness 400 is pulled out to the left and right outside through the front side of the first bracket 100, and the fourth clip 470 having the connector 471 is engaged with and attached to the fixing hole 132 of the first bracket 100.

Next, as shown in FIG. 18, 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, the hooking portions 42, 52 (see FIG. 4) of the connecting member CN to which the force cloth 30 is attached are attached to the positions of the first bracket 100 below the clips 440 to 470 holding the harness 400. (Strength cloth mounting process). Specifically, as shown in FIG. 12, the wire engaging portion of the fixing wire 60 in which the first hooking portion 42 of the first mounting wire 40 attached to the second force cloth 32 is fixed to the first bracket 100. It is hooked on 61A and engaged (second mounting step). Next, with respect to the first posture (see FIG. 6A) in which the first bracket 100 is fixed to the second bracket 200 (case 2), the rear end portion is set at a predetermined angle to the left and right outside with the front end portion as the center. The second posture is rotated by θ. 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 hooking portion 52 is pulled back through the wire engaging portion 61A and the first bracket 100. 1 Hook and engage with the hooking portion 42 (first mounting step).

Next, the first bracket 100 is rotated from the second posture shown in FIG. 12 to the left and right inward around the front end portion thereof, and substantially along the front-rear direction as shown in FIG. 6A. The first 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 bracket engaging hole 252 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 261 (see FIG. 18) from the left and right outside, and fastened to the nut 91N. As a result, the airbag module 10 is fixed to the second bracket 200 via the first bracket 100.

Next, as shown in FIG. 6A, 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. 16B, the line fastener 550 of the skin member 80 is left open. At this time, the fixing hole 271 of the second bracket 200 is exposed from the first opening 517A of the first skin member 510, and the fixing hole 251 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. 17, 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.

Then, as shown in FIG. 3, the bolt 93B is passed through the fixing hole 251 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, and the airbag mounting bracket 340. Lightly fasten to the nut 93N fixed to and temporarily fix it. After that, as shown in FIG. 13, the side airbag device 1 is moved so as to rotate around the bolt 93B, and the positioning portion 230 of the second bracket 200 is moved forward to the bracket engaging surface 364A of the base bracket 360. The position of the side airbag device 1 with respect to the vehicle body is determined by bringing the side airbag device 1 into contact with the vehicle body.

Then, as shown in FIG. 3, the bolt 92B was passed through the fixing hole 271 of the second bracket 200, the fixing hole 171 of the first bracket 100, and the hole 364B of the base bracket 360 from the left and right inside, and fixed to the base bracket 360. While fastening to the nut 92N, firmly fasten the lower bolt 93B to the nut 93N. Then, as shown in FIGS. 16B to 16A, 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 upper 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 necessary to pass the upper bolt 12B through the second force cloth lower portion 32B. There is no. 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 471 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 471 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 250 and 270 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 250 and 270 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 270 and the second vehicle body fixing portion 250 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 250 and 270.

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. 19, 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.

Further, in the mounting wires 40 and 50, the positions P41 and P51 at the center of the upper and lower sides of the force cloth mounting portions 41 and 51 are displaced downward or upward with respect to the positions P1 at the center of the upper and lower sides of the hooking portions 42 and 52. The force cloth mounting portions 41, 51 can be moved up or down with reference to the positions where the mounting wires 40, 50 of the first bracket 100 are mounted. As a result, the degree of freedom in the layout of the parts constituting the side airbag device 1 can be improved as compared with the conventional configuration that requires a substantially symmetrical installation space in the vertical direction with respect to the position where the mounting wire is mounted. it can.

Further, the position P41 of the first mounting wire 40 at the center of the top and bottom of the first force cloth mounting portion 41 is displaced downward with respect to the position P1 of the center of the top and bottom of the two top and bottom first hooking portions 42. Since the vertical center position P51 of the second force cloth mounting portion 51 of the mounting wire 50 is displaced upward with respect to the vertical center position P1 of the two upper and lower second hooking portions 52, the airbag 11 is deployed. Occasionally, the portion of the first bracket 100 where the force is concentrated from the first mounting wire 40 and the portion where the force is concentrated from the second mounting wire 50 can be dispersed. As a result, the force applied to the first bracket 100 from the mounting wires 40 and 50 when the airbag 11 is deployed can be balanced.

Further, since the first mounting wire 40 has a downward projecting portion 45 constituting the lower end portion of the first force cloth mounting portion 41, and the harness 400 extends upward from the upper end portion of the inflator 12. , While securing a space for arranging the harness 400, it is possible to secure the vertical length of the first force cloth mounting portion 41. As a result, the vertical length of the portion of the second force cloth 32 to be attached to the first force cloth attachment portion 41 can be secured, so that the deployment direction of the airbag 11 is satisfactorily regulated by the second force cloth 32. be able to.

Further, since the upper overhanging portion 55 of the second mounting wire 50 protrudes more than the lower overhanging portion 56, the vertical length of the second force cloth mounting portion 51 can be increased while improving the degree of freedom in layout. Can be secured. As a result, the vertical length of the portion of the first force cloth 31 to be attached to the second force cloth attachment portion 51 can be secured, so that the deployment direction of the airbag 11 is satisfactorily regulated by the first force cloth 31. be able to.

Further, since the first upper extending portion 43 and the first lower extending portion 44 of the first mounting wire 40 are arranged in the space between the first bracket 100 and the second bracket 200, the first bracket 100 and the first bracket 200 are arranged. The first mounting wire 40 can be compactly arranged by utilizing the space between the two brackets 200. As a result, the degree of freedom in layout can be improved.

Further, since the first mounting wire 40 is arranged at a position different from the bolt 12B of the inflator 12 when viewed from the left-right direction and at a position overlapping the bolt 12B when viewed from the vertical direction, the first mounting wire 40 is arranged. The first mounting wire 40 can be arranged close to the first bracket 100 in the left-right direction while suppressing interference between the bolt 12B and the bolt 12B. As a result, the side airbag device 1 can be made compact to the left and right.

Further, since the first mounting wire 40 and the second mounting wire 50 are mounted on the common fixing wire 60 provided on the first bracket 100, the first bracket 100 is attached to the mounting portion of the first mounting wire 40. , The degree of freedom in layout can be improved as compared with the case where the mounting portion of the second mounting wire 50 is provided separately.

Further, since the two second hooking portions 52 of the second mounting wire 50 are arranged between the two first hooking portions 42 of the first mounting wire 40, the first mounting wire 40 is used for the second mounting. It is possible to prevent the wire 50 from moving up and down.

Further, since the first force cloth mounting portion 41 of the first mounting wire 40 is arranged on the front side of the first bracket 100 at a position where it does not overlap with the first bracket 100 when viewed from the left and right direction, the second force is obtained. The length of the cloth 32 can be shortened. As a result, the degree of freedom in layout can be improved, and the deployment direction of the airbag 11 can be satisfactorily regulated by the second force cloth 32.

Further, in the side airbag device 1, since the attachment wires 40 and 50 are arranged within the width of the wire frame 20 in the left-right direction, the attachment wires 40 and 50 are arranged so as to fit inside the wire frame 20 in the left-right direction. Therefore, the side airbag device 1 can be made compact to the left and right.

Further, since the entire clips 440 to 470 are arranged outside the deployment locus 11A of the airbag 11 when viewed from the left-right direction, the airbag 11 contacts the clips 440 to 470 when the airbag 11 is deployed. Can be suppressed.

Further, since the clips 440 to 470 are arranged above the hooking portions 42 and 52 of the connecting member CN, the clip 440 is used when the side airbag device 1 is assembled by attaching the clips 440 to 470 and the connecting member CN. ~ 470 and the portion of the connecting member CN attached to the first bracket 100 are unlikely to interfere with each other. As a result, the assembly work of the side airbag device 1 can be easily performed.

Further, since the holding portions 451 and 461 of the clips 450 and 460 are arranged between the first bracket 100 and the second bracket 200, a part of the harness 400 is arranged between the first bracket 100 and the second bracket 200. can do. Thereby, the harness 400 can be protected by the first bracket 100 and the second bracket 200. Further, the space between the first bracket 100 and the second bracket 200 in the side airbag device 1 can be effectively utilized.

Further, since the holding portions 451 and 461 of the clips 450 and 460 are arranged on the side opposite to the side where the inflator 12 of the first bracket 100 is arranged, the harness 400 whose one end is connected to the inflator 12 can be used. One bracket 100 can be routed from the side on which the inflator 12 is arranged to the opposite side. As a result, it is possible to prevent the airbag 11 from coming into contact with the harness 400 when the airbag 11 is deployed. Further, the harness 400 can be arranged more compactly in the front-rear direction and the vertical direction as compared with the case where the harness 400 is arranged in front of or behind the first bracket 100, above or below the first bracket 100.

Further, since the connector 471 of the fourth clip 470 is arranged on the same side as the side where the inflator 12 of the first bracket 100 is arranged, the harness 400 is placed on the side of the first bracket 100 where the inflator 12 is arranged. Can be routed from the other side to the side where the inflator 12 is placed again. As a result, the harness 400 is compactly arranged on the left and right sides as compared with the case where the harness 400 pulled out to the side opposite to the side where the inflator 12 is arranged is arranged as it is on the side opposite to the side where the inflator 12 is arranged. can do. Further, since the fourth clip 470 arranged outside the deployment locus 11A of the airbag 11 has the connector 471, it is possible to prevent the airbag 11 from coming into contact with the connector 471 of the harness 400 when the airbag 11 is deployed. Can be done. Further, since the connector 471 is arranged in the space above the airbag module 10, it is possible to facilitate the connection to the connector 471.

Further, since the clips 450, 460, and 470 are arranged above the one end connected to the inflator 12 of the harness 400 and behind the deployment locus 11A, the clips 450 to 470 are attached to the first bracket 100. It can be arranged compactly. Thereby, the length of the harness 400 held by the clips 450 to 470 can be shortened.

Further, since the first clip 440 is attached to the holding plate 13 of the airbag module 10, the harness 400 can be fixed to the first bracket 100 via the holding plate 13 near the inflator 12. This can prevent the harness 400 from moving near the inflator 12.

Further, since the first clip 440 is arranged on the rear side of the airbag 11, the first clip 440 arranged near the airbag 11 is arranged in the direction opposite to the deployment direction of the airbag 11. .. As a result, it is possible to prevent the airbag 11 from coming into contact with the first clip 440 when the airbag 11 is deployed.

Further, the side airbag device 1 is a device in which the inner side surface 1S is exposed when the seat back S2 is moved, and the clips 440 to 470 overlap the striker 350 in the left-right direction, and the positions in the up-down direction or the front-rear direction Because they are different, the harness 400 can be fixed at a position that does not interfere with the striker 350. As a result, at least a part of the striker 350 provided on the vehicle body can be arranged in the side airbag device 1, and the side airbag device 1 and the striker 350 provided on the vehicle body can be compactly arranged.

Further, according to the side airbag device 1 manufactured by the manufacturing method according to the present embodiment, as described above, it is possible to prevent the airbag 11 from coming into contact with the clips 440 to 470 when the airbag 11 is deployed. it can. Further, according to the manufacturing method according to the present embodiment, since the clips 440 to 470 are attached before attaching the connecting member CN (strength cloth 30), the harness 400 does not interfere with the connecting member CN when attaching the harness 400. It can be suppressed. Further, when the connecting member CN is attached, the hooking portions 42, 52 of the connecting member CN and the clips 440 to 470 are unlikely to interfere with each other, so that the assembly work of the side airbag device 1 can be easily performed.

Further, since the base member BA has the third frame portion F3 that connects the lower portions of the first frame portion F1 and the second frame portion F2 to each other, the rigidity of the base member BA can be improved. Further, since the third frame portion F3 is arranged behind the front end of the airbag 11 and in front of the rear end of the inflator 12, the side airbag device 1 can be made compact in the front-rear direction. .. Further, since the portion near the front side of the first frame portion F1 and the second frame portion F2 can be connected by the third frame portion F3, the first frame portion F1 and the second frame portion F2 are connected when the airbag 11 is deployed. It is possible to suppress the deformation so as to spread to the left and right.

Further, since the third frame portion F3 is arranged in front of the central axis 12C of the inflator 12, the first frame portion F1 and the front side of the second frame portion F2 can be connected by the third frame portion F3. .. As a result, it is possible to further suppress the deformation of the first frame portion F1 and the second frame portion F2 so as to spread to the left and right when the airbag 11 is deployed.

Further, since the base member BA has the fourth frame portion F4 that connects the upper portions of the first frame portion F1 and the second frame portion F2 to each other, the rigidity of the base member BA can be further improved. Further, the third frame portion F3 and the fourth frame portion F4 can further suppress the deformation of the first frame portion F1 and the second frame portion F2 so as to spread to the left and right when the airbag 11 is deployed.

Further, since the third frame portion F3 is connected to the side plate portion 210 of the second frame portion F2 behind the reinforcing convex portion 217, the third frame portion F3 is connected near the highly rigid portion of the side plate portion 210. It will be. Thereby, the rigidity of the base member BA can be further improved.

Further, since the first wire 21 integrally has the first wire side portion 21A constituting the first frame portion F1 and the first wire lower portion 21B constituting the third frame portion F3, the first frame portion F1 and the first wire portion F1 It is not necessary to connect the third frame portion F3 by welding or the like. As a result, the man-hours for manufacturing the base member BA can be reduced.

Further, since the first wire lower portion 21B of the first wire 21 is joined to the lower surface of the lower plate portion 220 of the second bracket 200, the third frame portion F3 is combined with the first wire lower portion 21B of the first wire 21. It can be composed of the lower plate portion 220 of the second bracket 200. As a result, the rigidity of the third frame portion F3 can be improved, and the rigidity of the base member BA can be further improved.

Further, since the base member BA has a side plate portion 210 that holds the shape of the side airbag device 1 on the seat S side, the side plate portion 210 can hold a fine shape that is difficult to hold with a frame made of a metal rod. it can. As a result, the shape of the side airbag device 1 on the seat S side can be made clear, and the appearance of the side airbag device 1 can be improved.

Further, according to the mounting structure of the side airbag device 1 according to the present embodiment, since the second bracket 200 has a positioning portion 230 that can be engaged with the base bracket 360 fixed to the vehicle body, the positioning of the second bracket 200 is performed. By fixing the second bracket 200 to the vehicle body in a state where the portion 230 is engaged with the base bracket 360, it is possible to reduce the installation error when the side airbag device 1 is attached to the vehicle body.

Further, since the positioning portion 230 protrudes from the side plate portion 210 of the second bracket 200, a space can be secured between the side plate portion 210 of the second bracket 200 and the base bracket 360. As a result, it is possible to prevent the side plate portion 210 of the second bracket 200 from coming into contact with the base bracket 360.

Further, since the positioning portion 230 can be engaged with the bracket engaging portion 362 protruding from the base portion 361 of the base bracket 360, there is a space between the side plate portion 210 of the second bracket 200 and the base portion 361 of the base bracket 360. Can be secured. As a result, it is possible to prevent the side plate portion 210 of the second bracket 200 from coming into contact with the base portion 361 of the base bracket 360.

Further, since the positioning portion 230 can be engaged with the bracket engaging portion 362 formed by bending a part of the metal plate constituting the base bracket 360, the bracket engaging portion is attached to the main body of the base bracket. As compared with the case where the bracket engaging portion 362 is provided, an error in the position of the bracket engaging portion 362 with respect to the vehicle body can be suppressed. As a result, the mounting error when mounting the side airbag device 1 on the vehicle body can be further reduced.

Further, since the second bracket 200 is fixed to the airbag fixing portion 364 of the bracket engaging portion 362 at a position behind the positioning portion 230, the positions of the fixing portions of the second bracket 200 and the base bracket 360 are not displaced from each other. It can be suppressed. As a result, the mounting error when mounting the side airbag device 1 on the vehicle body can be further reduced.

Further, since the first bracket 100 has an insertion hole 172 through which the positioning portion 230 of the second bracket 200 passes, the first bracket 100 is fixed to the vehicle body even in a configuration having the first bracket 100 arranged between the second bracket 200 and the vehicle body. The positioning portion 230 of the second bracket 200 can be directly engaged with the base bracket 360. As a result, it is possible to reduce the mounting error when mounting the side airbag device 1 on the vehicle body.

Further, since the first bracket 100 and the second bracket 200 are fastened together with the base bracket 360 by the bolt 92B, the number of parts and the assembly man-hours of the side airbag device 1 can be reduced. Similarly, since the first bracket 100 and the second bracket 200 are fastened together with the airbag mounting bracket 340 by the bolt 93B, the number of parts and the assembly man-hours of the side airbag device 1 can be reduced.

Further, since the positioning portion 230 protruding from the side plate portion 210 of the second bracket 200 is arranged behind the airbag module 10, it is possible to prevent the airbag 11 from coming into contact with the positioning portion 230 when the airbag 11 is deployed. be able to.

Further, since the second bracket 200 is fastened to the nut 92N fixed to the base bracket 360 by the bolt 92B, the bolt 92B can be fastened to the nut 92N from the inside of the vehicle body via the first bracket 100. This makes it possible to simplify the work of attaching the side airbag device 1 to the vehicle body.

Further, the second bracket 200 has a first vehicle body fixing portion 270 and a second vehicle body fixing portion 250 arranged below the first vehicle body fixing portion 270, and the positioning portion 230 is front and rear of the base bracket 360. Since the contact is possible, the second vehicle body fixing portion 250 is temporarily fixed to the vehicle body, and then the positioning portion 230 is applied to the base bracket 360, and in that state, the first vehicle body fixing portion 270 is attached to the base bracket 360. It can be fixed and the second vehicle body fixing portion 250 can be mainly fixed to the vehicle body. As a result, the mounting error when mounting the side airbag device 1 on the vehicle body can be further reduced.

Further, since the burr BR of the brackets 100 and 200 faces the side opposite to the side where the airbag module 10 is arranged, the airbag 11 has a burr of the brackets 100 and 200 when the airbag 11 is deployed with a simple configuration. It is possible to suppress contact with BR.

Further, since the pad 70 covers the portion where the burr BR of the second bracket 200 is formed, it is possible to further suppress the airbag 11 from coming into contact with the burr BR of the second bracket 200 when the airbag 11 is deployed. it can.

Further, since the first force cloth attachment portion 41 of the first attachment wire 40 is arranged at a position where it does not overlap with the first bracket 100 when viewed from the left and right direction, it is attached to the first attachment wire 40 of the second force cloth 32. It is possible to prevent the formed portion from coming into contact with the burr BR on the outer peripheral portion of the first bracket 100.

Further, since the second bracket 200 has a bent portion 218 that bends to the side opposite to the side on which the airbag module 10 is arranged, the airbag 11 has a burr BR on the outer peripheral portion of the second bracket 200 when the airbag 11 is deployed. It is possible to further suppress contact with.

Further, since the welded portions W1 and W2 of the wire frame 20 and the second bracket 200 are located on the side of the second bracket 200 opposite to the side where the airbag module 10 is arranged, the airbag is deployed when the airbag 11 is deployed. It is possible to prevent the 11 from coming into contact with the welded portions W1 and W2 of the wire frame 20 and the second bracket 200.

Further, since the brackets 100 and 200 are arranged at positions where they overlap with the airbag module 10 when viewed from the left and right direction, the airbag module 10 can be protected by the brackets 100 and 200.

Further, since the first force cloth 31 is arranged so as to pass between the airbag module 10 and the vehicle body, the first force cloth 31 can prevent the airbag 11 from coming into contact with the vehicle body.

Further, since the skin fixing portion 81B of the hook 81 for fastening the skin member 80 to the wire frame 20 extends toward the side opposite to the side where the airbag module 10 is arranged, the airbag 11 is deployed when the airbag 11 is deployed. It is possible to prevent 11 from coming into contact with the skin fixing portion 81B.

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 other words, in the above embodiment, the attached portion provided on the first bracket 100 is the fixing wire 60 fixed to the first bracket 100, but the attached portion is directly attached to the first bracket. It may be provided. Further, in the above-described embodiment, the mounting wires 40 and 50 as the mounting members are mounted on the common fixed wire 60 (mounted portion), but the mounted portions are separately provided for each mounting member. May be good. That is, the number of attached portions may be plural.

In the above embodiment, in the first mounting wire 40, the vertical center position P41 of the first force cloth mounting portion 41 is displaced downward with respect to the vertical center position P1 of the two upper and lower first hooking portions 42. However, it may be shifted upward. Further, in the above embodiment, the overhanging portion 45 of the first mounting wire 40 protrudes downward and the harness 400 extends upward from the upper end portion of the inflator 12, but the overhanging portion protrudes upward and the harness becomes an inflator. It may extend downward from the lower end of the.

In the above embodiment, in the second mounting wire 50, the vertical center position P51 of the second force cloth mounting portion 51 is displaced upward with respect to the vertical center position P1 of the two upper and lower second hooking portions 52. However, it may be shifted downward. Further, in the above-described embodiment, in the second mounting wire 50, the upper overhanging portion 55 protrudes more than the lower overhanging portion 56, but the lower overhanging portion protrudes more than the upper overhanging portion. May be good.

In the above embodiment, in the first mounting wire 40 and the second mounting wire 50, the positions P41 and P51 at the center of the upper and lower parts of the force cloth mounting portions 41 and 51 are located at the upper and lower hooking portions 42 and 52 (bracket mounting portions). Although it was displaced in different directions in the vertical direction with respect to the position P1 in the center of the vertical direction, it may be displaced in the same direction.

In the above embodiment, the second mounting wire 50 is exemplified as the outer mounting member and the first mounting member, and the first mounting wire 40 is exemplified as the inner mounting member and the second mounting member, but the mounting member is not a wire. , For example, it may be a hook. Further, the mounting member may be, for example, a plate-shaped mounting member formed by bending a metal plate. When the mounting member is plate-shaped, for example, the portion where the insertion hole through which the force cloth is inserted is formed as the force cloth mounting portion, and the portion fixed to the first bracket by fastening or welding is the bracket mounting portion. Can be.

In the above embodiment, the bracket mounting portions include the upper and lower hooking portions 42 and 52, but the bracket mounting portions may be at one location or at three or more locations. When there is only one bracket mounting portion, the position of the vertical center of the bracket mounting portion is the position of the vertical center of the bracket mounting portion. When there are three or more bracket mounting portions, the upper and lower center positions of the bracket mounting portion are the upper and lower center positions of the bracket mounting portion located at the top and the lowermost bracket mounting portion.

In the above embodiment, the side airbag device 1 includes two mounting members, a first mounting wire 40 as an inner mounting member and a second mounting wire 50 as an outer mounting member. It may include three or more mounting members, including an outer mounting member. Further, the side airbag device may be configured to include only one mounting member.

In the above embodiment, the upper bolt 12B of the two bolts 12B of the inflator 12 is located above the loop portion 30A, but both of the two bolts 12B are above the loop portion 30A. That is, it may be located at a position different from that of the second force cloth lower portion 32B in the longitudinal direction of the inflator 12.

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.

Further, in the above-described embodiment, the side airbag device 1 includes two force cloths, a first force cloth 31 as an outer force cloth and a second force cloth 32 as an inner force cloth. It may have three or more rags, including a cloth and an inner rag. Further, the side airbag device may be configured to include only one force cloth.

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 471, 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 250 and 270 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 two by two, 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 first clip 440 is fixed to the first bracket 100 via the holding plate 13, but the first clip 440 is directly attached to the first bracket 100 like the other clips 450 to 470. It may be fixed. Further, the clips 450 to 470 may be fixed to the first bracket 100 via other members.

In the above embodiment, the harness fixing member includes the first clip 440 as the fourth fixing member, the second clip 450 and the third clip 460 as the first fixing member and the second fixing member, and the third fixing member. Although the configuration includes the fourth clip 470 of the above, the number of harness fixing members is arbitrary.

In the above embodiment, the second frame portion F2 has a side plate portion 210 which is a plate-shaped portion, and this side plate portion 210 has a lower end protruding portion 216 and a reinforcing convex portion 217, but the second frame portion Instead of, the first frame portion may have a plate-shaped portion. Further, the frame may have a plate-like portion in both the first frame and the second frame.

In the above embodiment, the second frame portion F2 and the third frame portion F3 are composed of a second bracket 200 (plate-shaped frame) made of a metal plate and a wire frame 20 made of a metal rod, for example. , It may be composed only of a wire frame, or it may be composed only of a plate-shaped frame. Similarly, in the above-described embodiment, the first frame portion F1 and the fourth frame portion F4 are composed of only the wire frame 20, but for example, they may be composed of only the plate-shaped frame or the wire frame. And a plate-shaped frame may be used. Further, the frame may be configured not to include the fourth frame portion.

In the above embodiment, the positioning portion 230 of the second bracket 200 can come into contact with the bracket engaging surface 364A of the base bracket 360 from the front, but the positioning portion can come into contact with the base bracket from behind. May be good.

In the above embodiment, the positioning portion 230 protrudes from the main body portion of the second bracket 200 and can come into contact with the bracket engaging surface 364A formed on the base bracket 360. It may be configured to be engageable with a hole formed in the base bracket. Further, the positioning portion may not be a portion protruding from the main body portion of the second bracket, but may be, for example, a surface or a hole to which a portion protruding from the main body portion of the base bracket can be engaged.

In the above embodiment, the first bracket 100 (second fixing bracket) having an insertion hole 172 through which the positioning portion 230 passes is arranged between the second bracket 200 and the vehicle body, but the second fixing bracket is provided. It may not have a configuration.

In the above embodiment, the bent portion 218 is provided at only one place at the front end portion of the lower end portion 210C of the second bracket 200, but the bent portion may be provided at a plurality of places. Further, the configuration may not include a bent portion.

In the above embodiment, the pad 70 covers a part of the portion of the second bracket 200 where the burr BR is formed, but the pad covers almost the entire portion of the second bracket where the burr is formed. It may be provided.

In the above embodiment, the bracket has two members, the first bracket 100 and the second bracket 200, but the bracket may be composed of one member or three or more members. It may be composed of.

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 1S Inner side surface 2 Case 10 Airbag module 11 Airbag 12 Inflator 12C Central axis 21 1st wire 21A 1st wire side 21B 1st wire lower 70 Pad 80 Skin member 200 2nd bracket 210 Side plate 216 Lower end protruding part 217 Reinforcing convex part 220 Lower plate part 400 Harness BA Base member F1 1st frame part F2 2nd frame part F3 3rd frame part F4 4th frame part L1 1st straight line L2 2nd straight line S sheet

Claims (10)

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, a pad covering the frame, and a skin member covering the frame and the pad.
The frame is located below the airbag module, the first frame portion located on one of the left and right sides of the airbag module, the second frame portion located on the left and right sides of the airbag module, and the first frame. It has a third frame portion that connects the portion and the second frame portion, and has a third frame portion.
A side airbag device characterized in that the third frame portion is arranged behind the front end of the airbag and before the rear end of the inflator. The side airbag device according to claim 1, wherein the third frame portion is arranged in front of the central axis of the inflator. The frame is located above the airbag module and in front of the central axis of the inflator, and has a fourth frame portion that connects the first frame portion and the second frame portion. The side airbag device according to claim 1 or 2. At least one of the first frame and the second frame has a first plate-like portion.
The first plate-shaped portion has a reinforcing convex portion that is convex in one direction in the left-right direction.
The side airbag device according to any one of claims 1 to 3, wherein the third frame portion is connected to the first plate-shaped portion behind the reinforcing convex portion. The frame has a first wireframe made of metal rods and
The first wire frame is characterized by having a wire side portion constituting the first frame portion and a lower portion of a wire that bends from the lower end of the wire side portion and extends to the left and right to form the third frame portion. The side airbag device according to any one of claims 1 to 4. The frame has a plate-shaped frame made of a metal plate and has a plate-like frame.
The plate-shaped frame has a side plate portion that constitutes the second frame portion, and a lower plate portion that bends from the lower end of the side plate portion and extends to the left and right to form the third frame portion.
The side airbag device according to claim 5, wherein the lower portion of the wire is joined to the lower surface of the lower plate portion. A harness that is located in the case and has one end connected to the inflator.
The third frame portion has a first straight line along the longitudinal direction of the inflator passing through the front end of the harness and a second straight line along the longitudinal direction of the inflator passing through the rear end of the harness when viewed from the left and right. The side airbag device according to any one of claims 1 to 6, wherein the side airbag device is arranged between the straight line of the airbag. According to claim 1, the side airbag device is a device that is fixed to a vehicle body and arranged between the vehicle body and the seat, and the surface on the seat side is exposed when the seat is moved. The side airbag device according to any one of claims 7. The side airbag device according to claim 8, wherein the frame has a second plate-shaped portion of the side airbag device that holds the shape of the seat side. At least one of the first frame and the second frame has a third plate-like portion.
The third plate-shaped portion has a lower end protruding portion protruding downward from other portions at the lower end portion.
The side air according to any one of claims 1 to 9, wherein the third frame portion is connected to the lower end portion of the third plate-shaped portion behind the lower end protruding portion. Bag device.

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