JP4535109B2 - Head protection airbag and manufacturing method thereof - Google Patents

Description

The present invention relates to a head protection airbag that is deployed and inflated from the upper edge side to the lower side of a side window inside the vehicle that is folded and stored so as to cover the inside of the side window of the vehicle when the inflation gas flows in. In particular, the present invention relates to a head protection airbag configured by disposing an inner tube for enhancing heat resistance in a connection port portion through which an inflating gas flows in an airbag body, and a method for manufacturing the same .

Conventionally, a head protection airbag has been configured to include an airbag body and an inner tube (see, for example, Patent Document 1). The airbag main body is deployed and inflated from the upper edge side to the lower side of the side window inside the vehicle that is folded and stored so as to cover the inner side of the side window of the vehicle when the inflation gas flows in, and A cylindrical connection port portion, which is disposed on the upper edge side of the expansion / expansion portion and is connected to an inflator for supplying the expansion gas so that the expansion gas can flow into the expansion / expansion portion. It was. The inner tube is disposed between the inner peripheral surface of the connection port portion of the airbag body and the outer peripheral surface of the inflator, and has a cylindrical shape that guides the inflation gas from the inflator to the deployment and inflation portion of the airbag body. It was. This inner tube is disposed in order to increase the heat resistance of the connection opening of the airbag body.
JP 2007-8277 A

  However, the head protection airbag of the conventional publication is manufactured by manufacturing an airbag body by sewing or bag weaving, and inserting an inner tube into a cylindrical connection port formed on the airbag body. It was. Therefore, the inner tube is inserted into the connection port while checking the position and orientation while touching the unevenness from the outer peripheral side of the connection port by hand so that it is not displaced and using welding etc. Therefore, it took time and effort to arrange the inner tube.

  In particular, the inner tube has a cylindrical shape including an insertion port portion that is disposed on the upper end side and into which the inflator is inserted, and an outflow port portion that is connected to the lower end side of the insertion port portion and can flow the inflation gas. An outlet portion is branched into the front and rear sides at the lower end of the insertion port portion, and a front outlet portion that can flow expansion gas to the front side, and a rear outlet portion that can flow expansion gas to the rear side. In such a case, the inner tube outlet port side is inserted to the side of the expansion / expansion part away from the opening of the connection port part, and the expansion gas is inserted in the opposite direction before and after. Therefore, the inner tube must be carefully inserted, and the above-described problem has been promoted.

  This invention solves the above-mentioned subject, and it aims at providing the head protection airbag which can be manufactured easily also as a structure which arrange | positions an inner tube in the connection port part of an airbag main body.

The head protection airbag according to the present invention is inflated from the upper edge side to the lower side of the side window inside the vehicle that is folded and stored so as to cover the inside of the side window of the vehicle when the inflation gas flows in. A deployment connecting portion that is disposed on the upper edge side of the deployment and expansion portion, and is connected to an inflator for supplying the inflation gas so that the inflation gas can flow into the deployment and expansion portion; An airbag body having
A cylindrical inner tube that is disposed between the inner peripheral surface of the connection port portion and the outer peripheral surface of the inflator and guides the inflation gas from the inflator to the deployment and inflation portion of the airbag body;
It is configured to include a,
At least the vicinity of the connection port of the airbag body is surrounded by a partition stitching portion formed by stitching a vehicle inner side seat positioned on the inner side of the vehicle and an outer side seat positioned on the outer side of the vehicle, and the partition stitching portion. A gas introduction part capable of introducing an inflation gas, and a sewing bag part comprising:
The inner tube is arranged in a cylindrical shape including an insertion port portion that is arranged on the upper end side and into which the inflator is inserted, and an outlet port portion that is connected to the lower end side of the insertion port portion and can flow out the expansion gas.
An outlet portion is branched into the front and rear sides at the lower end of the insertion port portion, and a front outlet portion that can flow expansion gas to the front side, and a rear outlet portion that can flow expansion gas to the rear side. Configured with,
The inner tube is formed from a flexible tube sheet, and the tube sheet is folded at a position on the front edge side of the insertion port, folded in two, and the flow at the outer peripheral edge is overlapped. The lower edge side of the outlet portion and the portion that becomes the upper edge side of the outlet portion in the area of the rear outlet portion from the rear edge side of the insertion port portion are stitched as a stitched portion, and are formed into a cylindrical shape, ,
In the state where the stitching portion is provided in the lower edge side portion of the outlet portion in the tube sheet folded in half and is partially formed in a cylindrical shape, the vehicle inner seat and the vehicle outer seat are formed when the sewing bag portion is formed. A joint stitching portion is formed, which is sewn together at the time of stitching the partition stitching portion located at the outer peripheral edge of the connection port portion, and the inner tube is attached to the connection port portion and disposed. A head protection airbag,
The airbag body
A sewing bag portion, and a bag weaving bag portion which is disposed in the area of the deployment inflating portion and is formed by bag weaving and communicated with the sewing bag portion, and
The sewing bag portion and the bag weaving bag portion are arranged side by side along the front-rear direction, and the bag weaving bag portion and the sewing bag portion are connected by sewing,
Bag weaving bag part,
A gas inflow portion capable of inflating so as to inflate the vehicle interior side wall portion and the vehicle exterior wall portion in the vehicle interior / exterior direction by allowing inflation gas from the connection port portion through the gas introduction portion of the sewing bag portion to flow in, and the vehicle interior side wall portion; A peripheral portion that is disposed so as to be coupled to the vehicle outer side wall portion and defines a peripheral edge of the gas inflow portion;
The connecting edge with the sewing bag part side in the bag weave bag part,
Continuing from the inner wall and the outer wall of the gas inflow portion, facing the inner and outer sides of the bag-woven bag portion from the upper edge to the lower edge, and separated from each other between the inner side and the outer side of the vehicle It is composed of a belt-shaped inside car allowance part and an outside car allowance part,
The joint edge with the bag woven bag part side in the sewing bag part,
From the upper edge to the lower edge of the sewing bag portion, it is configured as an edge seam allowance portion in which the vehicle inner seat and the vehicle outer seat are separated from each other in the vehicle interior and exterior directions,
The edge margin of the inner bag of the sewing bag part and the inner margin of the bag weaving bag part, and the outer margin of the outer sheet of the sewing bag part and the outer side of the bag weaving bag part Mutual interaction with the seam allowance,
Each joined by a vertical stitching portion that stitches along the vertical direction; and
The compartment stitching part of the sewing bag part
The sewing bag portion is connected to the peripheral portion of the peripheral edge of the gas inflow portion of the bag weave bag portion so that the gas introduction portion communicates with the gas inflow portion of the bag weave bag portion corresponding to the gas introduction portion. By providing a lateral stitching portion that stitches the vehicle inner seat, the vehicle outer seat, and the bag woven bag portion substantially along the front-rear direction, and being connected,
As a structure to be formed,
The sewing bag portion is disposed between the two bag woven bag portions,
The vertical stitching portions are arranged at four locations corresponding to the edge seam allowance portions of the vehicle inner seat and the vehicle outer seat at both front and rear ends of the sewing bag portion,
The vertical suture is
A palm stitch specification that overlaps and sews the edge seam allowance part and the inner seam allowance part or the car outer seam allowance part so that the surfaces on the inner peripheral surface side of the airbag are aligned with each other,
Overlapping stitching specifications that overlap and stitch the edge seam allowance part and the car inner seam allowance part or the car outer seam allowance part in the car interior and exterior directions;
Of at least one of the two types of
Co-sewing in which the inner tube is sewn together with the front edge of the insertion port, the rear edge of the insertion port, and the upper edge of the outflow port at the time of stitching the partition stitching portion located on the outer peripheral edge of the connection port As a part, it is attached and arrange | positioned at the connection port part, It is characterized by the above-mentioned.
Further, the method for manufacturing a head protection airbag according to the present invention includes a case where the inflating gas flows from the upper edge side of the side window inside the vehicle that is folded and stored so as to cover the inside of the vehicle side window. A deployment expansion portion that expands and expands downward, and a cylindrical shape that is disposed on the upper edge side of the deployment expansion portion and is connected to an inflator for supplying the expansion gas so that the expansion gas can flow into the deployment expansion portion An airbag body having a connection port portion,
A cylindrical inner tube that is disposed between the inner peripheral surface of the connection port portion and the outer peripheral surface of the inflator and guides the inflation gas from the inflator to the deployment and inflation portion of the airbag body;
A method of manufacturing a head protection airbag comprising:
At least the vicinity of the connection port of the airbag body is surrounded by a partition stitching portion formed by stitching a vehicle inner side seat positioned on the inner side of the vehicle and an outer side seat positioned on the outer side of the vehicle, and the partition stitching portion. A gas introduction part capable of introducing an inflation gas, and a sewing bag part comprising:
The inner tube
With an insertion port portion that is arranged on the upper end side and into which the inflator is inserted, and an outlet port portion that is connected to the lower end side of the insertion port portion and can flow out the inflating gas.
An outlet portion is branched into the front and rear sides at the lower end of the insertion port portion, and a front outlet portion that can flow expansion gas to the front side, and a rear outlet portion that can flow expansion gas to the rear side. Configured with,
The tube sheet is formed from a flexible tube sheet, and the tube sheet is folded at the front edge side of the insertion port, folded in two, and placed under the outlet at the outer periphery. The edge side and the part which becomes the upper edge side of the outlet part of the area of the rear outlet part from the rear edge side of the insertion port part are sewn as a stitched part, and are formed into a cylindrical shape,
The airbag body
A sewing bag portion, and a bag weaving bag portion which is disposed in the area of the deployment inflating portion and is formed by bag weaving and communicated with the sewing bag portion, and
The sewing bag portion and the bag weaving bag portion are arranged side by side along the front-rear direction, and the bag weaving bag portion and the sewing bag portion are connected by sewing,
Bag weaving bag part,
A gas inflow portion capable of inflating so as to inflate the vehicle interior side wall portion and the vehicle exterior wall portion in the vehicle interior / exterior direction by allowing inflation gas from the connection port portion through the gas introduction portion of the sewing bag portion to flow in, and the vehicle interior side wall portion; A peripheral portion that is disposed so as to be coupled to the vehicle outer side wall portion and defines a peripheral edge of the gas inflow portion;
The connecting edge with the sewing bag part side in the bag weave bag part,
Continuing from the inner wall and the outer wall of the gas inflow portion, facing the inner and outer sides of the bag-woven bag portion from the upper edge to the lower edge, and separated from each other between the inner side and the outer side of the vehicle It is composed of a belt-shaped inside car allowance part and an outside car allowance part,
The joint edge with the bag woven bag part side in the sewing bag part,
From the upper edge to the lower edge of the sewing bag portion, it is configured as an edge seam allowance portion in which the vehicle inner seat and the vehicle outer seat are separated from each other in the vehicle interior and exterior directions,
The edge margin of the inner bag of the sewing bag portion and the inner margin of the bag weaving bag portion, and the outer margin of the outer seat of the sewing bag portion and the outer side of the bag weaving bag portion Mutual interaction with the seam allowance,
Each joined by a vertical stitching portion that stitches along the vertical direction; and
The compartment stitching part of the sewing bag part
The sewing bag portion is connected to the peripheral edge portion of the gas inflow portion of the bag weave bag portion so that the gas introduction portion communicates with the gas inflow portion portion of the bag weave bag portion corresponding to the gas introduction portion. By providing a lateral stitching portion that stitches the vehicle inner seat, the vehicle outer seat, and the bag woven bag portion substantially along the front-rear direction, and connected,
As a structure to be formed,
The sewing bag portion is disposed between the two bag woven bag portions,
The vertical stitching portions are arranged at four locations corresponding to the edge seam allowance portions of the vehicle inner seat and the vehicle outer seat at both front and rear ends of the sewing bag portion,
The vertical suture is
A palm stitch specification that overlaps and sews the edge seam allowance part and the inner seam allowance part or the car outer seam allowance part so that the surfaces on the inner peripheral surface side of the airbag are aligned with each other,
Overlapping stitching specifications that sew the edge seam allowance part and the car inner seam allowance part or the car outer seam allowance part in the car interior / exterior direction,
Of at least one of the two types of
The inner tube
In the state where the stitching portion is provided at the lower edge side portion of the outlet portion of the tube sheet folded in half and is partially formed in a cylindrical shape, the sewing bag portion is formed between the vehicle inner seat and the vehicle outer seat. Arranged in
The front edge of the insertion port, the rear edge of the insertion port and the upper edge of the outflow port are co-sewn, and are sewn together at the time of suturing the section suture part located at the outer periphery of the connection port.
It is formed in a cylindrical shape and is attached to a connection port portion.

In the head protection airbag and the manufacturing method thereof according to the present invention, when manufacturing the vicinity of the connection port of the airbag body, an inner tube is disposed between the vehicle inner seat and the vehicle outer seat, A sewing bag part can be manufactured by forming a section stitching part by forming a section stitching part at another part by forming a section stitching part by stitching a part located at the outer peripheral edge and forming a gas introduction part capable of introducing an inflation gas. In addition, the inner tube is also attached to the connection port without being displaced.

  That is, since the inner tube is sewn together and is positioned and attached in the connection opening when the sewing bag portion of the airbag body is manufactured, the inner tube is simply manufactured by manufacturing the sewing bag portion. Therefore, the airbag can be disposed at a predetermined position without any deviation, and the airbag can be easily manufactured.

Therefore, the head protection airbag and the manufacturing method thereof according to the present invention can be easily manufactured even if the inner tube is disposed in the connection opening of the airbag body.

  The inner tube may be formed in a cylindrical shape in advance, and may be placed between the vehicle inner seat and the vehicle outer seat and co-sewn. However, the inner tube is formed in a cylindrical shape at the time of co-sewing. If comprised in this way, the effort which forms an inner tube in a cylinder shape can be saved.

  When the inner tube is configured to be formed into a cylindrical shape at the time of co-sewing, a plurality of tube sheets having the same shape are stacked in the vehicle interior / exterior direction, and the stacked outer peripheral edges are formed. Place it between the vehicle inner seat and the vehicle outer seat and sew together, or fold the flexible tube sheet along the longitudinal direction so that the outer peripheral edge overlaps. The inner tube may be formed into a cylindrical shape by folding and folding the outer peripheral edge between the vehicle inner seat and the vehicle outer seat and sewing together.

  Of course, when the inner tube is formed into a cylindrical shape at the time of co-sewing, the tube sheet is partially sewn before the co-sewing, and the partially sewn tube sheet is used as the inner seat and the vehicle. It may be arranged between the outer sheet and sewed together.

  In addition, when the tube sheet is folded in half, if the fold arrangement location is configured as an area where the inflating gas is easy to hit, the heat resistance is higher than that of the inner tube formed by sewing. Can be improved.

The airbag body is configured by providing a sewing bag portion and a bag weaving bag portion that is disposed in the area of the deployment and inflating portion and communicated with the sewing bag portion formed by bag weaving.
The bag weaving bag part is a gas inflow part that can be inflated so that the inflating gas from the connection port part through the gas introducing part of the sewing bag part flows in and separates the inner wall part and the outer wall part from the inside and outside of the car. And a peripheral portion that is disposed so as to connect the vehicle inner wall portion and the vehicle outer wall portion and demarcates the periphery of the gas inflow portion.

  In such a configuration, it is possible to replace one of the bag woven bag portion and the sewing bag portion, and conversely, the other can be shared. Therefore, when the head protection airbag is mounted on different vehicles, for example, if the bag portion is shared, and the changed portion is handled by the sewing bag portion, the sewing bag portion has a length in the front-rear direction. When changing the size and shape of the inflated part, it can be dealt with by simply changing the length of the inner seat and the outer seat to be used or shifting the location of the stitched part. Can be changed easily. That is, in the configuration of the head protection airbag according to the present invention, when manufacturing various variations of the head protection airbag, including the assembly of the inner tube, it can be easily handled, and the manufacturing man-hours and costs are reduced. Can be manufactured.

In this case, the airbag main body is formed by juxtaposing the sewing bag portion and the bag weaving bag portion along the front-rear direction, and by sewing and connecting the bag weaving bag portion and the sewing bag portion. ,
The connecting edge of the bag weaving bag part with the sewing bag part side is connected to the inner wall side and the outer side wall part of the gas inflow part, and is opposed to the inner edge of the bag weaving bag part from the upper edge to the lower edge. And a belt-shaped inner side seam allowance part and an outer car side seam allowance part that are separated from each other on the inside and the outside of the car
As the edge of the sewing bag, the connecting edge of the bag weaving bag part side is the edge seam allowance part that separates the inner seat and the outer seat from the upper edge to the lower edge of the sewing bag section in the interior and exterior directions. Configure,
The edge margin of the inner bag of the sewing bag portion and the inner margin of the bag weaving bag portion, and the outer margin of the outer seat of the sewing bag portion and the outer side of the bag weaving bag portion And each other with the seam allowance portion are joined by a vertical stitching portion that stitches along the vertical direction, and
The peripheral edge of the peripheral edge of the gas inflow portion of the bag woven bag portion so that the partition stitching portion of the sewing bag portion communicates with the gas introduction portion and the portion of the gas inflow portion of the bag woven bag portion corresponding to the gas introduction portion. By providing a lateral stitching portion that stitches the inner bag, the outer seat, and the bag woven bag portion of the sewing bag portion substantially along the front-rear direction and connected to the portion,
An airbag body may be formed.

  In such a configuration, the connecting edge of the bag woven bag portion to the sewing bag portion side is configured by a belt-like vehicle inner seam allowance portion and vehicle outer seam allowance portion extending from the upper edge to the lower edge of the bag woven bag portion. Yes. Then, the inner seam allowance part and the outer carrotation part are aligned with the edge seam allowance part of the inner seat and the outer seat extending in the vertical direction of the sewing bag part, and a vertical stitching part is provided. If the seams are sewn together, first, the bag woven bag portion and the sewing bag portion are connected to the vehicle inner side wall portion and the vehicle inner seat along the front-rear direction from the upper edge to the lower edge, and The outer wall portion and the vehicle outer seat are connected. At this time, the gas inflow portion of the bag woven bag portion and the gas communication portion of the sewing bag portion are opened so as to penetrate vertically at the upper edge and the lower edge of the airbag.

  Thereafter, a lateral stitching portion for sewing the inner bag, the outer seat, and the bag woven bag portion of the sewing bag portion along the substantially front-rear direction is provided, and the partition stitching portion of the sewing bag portion is set to the bag woven bag portion. If it is connected to the peripheral edge of the periphery of the gas inflow part, the opening that penetrates from the upper edge to the lower edge of the airbag after the formation of the vertical stitching part is closed, and the gas inflow part of the bag weave bag part The part and the gas communication part of the sewing bag part are communicated with each other with good sealing performance.

Therefore, in the head protection airbag having such a configuration and the manufacturing method thereof , even when the bag woven bag portion and the sewing bag portion are connected and formed, the upper and lower edges from the upper edge to the lower edge of the airbag are aligned. It can be easily formed (manufactured) by stitching while securing the sealing property by simply providing a vertical stitching portion that stitches the entire region and a transverse stitching portion that connects the partition stitching portion and the peripheral edge portion. it can.

  And when the sewing bag part is arrange | positioned between the two bag weave bag parts, a vertical stitching part is an edge sewing of the vehicle inner side sheet | seat and the vehicle outer side sheet | seat in the front and back both ends of a sewing bag part. Corresponding to the margin part, it will be arranged at four places. At that time, at least one part of the vertical stitching part is an edge stitch margin part and an inner stitch margin part or an outer stitch margin part. It is desirable to sew together according to the hand-sewn stitching specification in which the airbags are overlapped and stitched so that the inner circumferential surfaces of the airbag are aligned with each other.

  That is, when the bag woven bag portion is connected to the front and back of the sewing bag portion, the vertical stitching portion corresponds to the edge seam allowance portion between the vehicle inner side seat and the vehicle outer side seat at the front and rear ends of the sewing bag portion. It will be arranged in four places, but the edge seam allowance and the inner seam allowance part or the car outer seam allowance are overlapped so that the surfaces on the inner peripheral surface side of the airbag are aligned with each other If the hand-sewn stitching specification to be sewn is provided in at least one place, the bag woven bag part can be smoothly connected to the front and back of the sewing bag part by the four vertical stitching parts. More specifically, for example, the three vertical stitching portions are sewn with an over stitching specification in which the edge stitch margin and the vehicle inner stitch margin or the vehicle outer stitch margin are overlapped and stitched in the vehicle interior / exterior direction. The remaining portions of the vertical stitching portion are the edge margin portion and the outer stitch portion. In that case, the inner seam allowance part and the edge seam allowance part are already sewn in the overlap stitch specification on the inner side of the car, and the vertical seam part interferes with the end seam allowance part. In the overlap stitching specification in which the outer seam allowance portion and the vehicle outer seam allowance are overlapped and stitched in the vehicle interior / exterior direction, stitching cannot be performed. However, in the joint seam specification, the outer seam allowance part and the edge seam allowance part can be aligned with each other on the inner peripheral surface side of the airbag, in other words, pulled out from the airbag side, Since they can be combined so that they overlap in the front-rear direction, and because they are not overlapped in the vehicle interior / exterior direction, the edge seam allowance and the vehicle outer seam allowance easily overlapped in the front-rear direction are sutured in the front-rear direction. And can be sutured.

  In the longitudinal stitching portion between the vehicle inner side and the vehicle outer side at the end of one side that is sewn first at the end portion in the front-rear direction of the sewing bag portion, the state before the sewing bag portion is formed, i.e., the inner tube is If the section stitching portion is not provided while sewing together, the vehicle inner seat and the vehicle outer seat can be greatly separated from each other in the vehicle interior / exterior direction, both can be sewn by the overlap stitch specification, and the vehicle interior and vehicle interior can be sewn together. After stitching together the vertical stitching part with the outside according to the overlap stitching specification, the sewn bag part is formed by co-sewing the inner tube to form the sewn bag part, and at the other end of the sewing bag part in the front-rear direction As described above, for example, the vertical stitching portion on the inner side of the vehicle may be sewn with the overlap stitching specification, and the remaining vertical stitching portions on the outer side of the vehicle may be sewn with the seam stitching specification.

  However, in the case where the sewing bag portion is configured in advance with a section stitching portion while co-sewing the inner tube, one at each of the front and rear ends of the sewing bag portion, that is, the inside of the vehicle or the vehicle If a vertical stitching portion is formed on at least one side of the outer side with a palm seam specification, the bag weaving bag portion can be easily connected to the front and back of the sewing bag portion while ensuring sealing performance. In this case, all the vertical stitches may have a seam stitch specification, or at least one vertical stitch, or a total of two vertical stitches at the front and rear ends of the sewing bag may be overlap stitch specifications. it can. In this case, if the section stitching portion is provided in advance while co-sewing the inner tube, one or both of the two vertical stitching portions will be sewn by the hand stitching specification.

  Of course, when the head protection airbag is formed by simply connecting the bag-woven bag portion and the sewing bag portion in the front-rear direction, the section stitching portion including the joint stitching of the inner tube in the sewing bag portion is bag-woven. If the bag portion and the sewing bag portion are formed after the connection, the two vertical stitching portions can be formed by stitching with the overlap stitch specification.

  In addition, as the inner tube, as a cylindrical shape provided with an insertion port portion that is arranged on the upper end side and into which the inflator is inserted, and an outlet port portion that can flow out the expansion gas continuously to the lower end side of the insertion port portion, An outlet portion is branched into the front and rear sides at the lower end of the insertion port portion, and a front outlet portion that can flow expansion gas to the front side, and a rear outlet portion that can flow expansion gas to the rear side. What is comprised and can be illustrated. In such an inner tube, the outlet portion side of the inner tube is disposed on the side of the expanding and inflating portion away from the opening of the connection port portion, and the inflation gas is allowed to flow out before and after being in opposite directions. Although it is necessary to arrange them in consideration of an accurate arrangement position and arrangement posture, when forming the compartment stitching portion by sewing the vehicle inner side seat and the vehicle outer side seat of the sewing bag portion to each other, Simply connect the inner tube flatly on the outer seat side or the inner seat side and lay the other inner seat or outer seat together and sew together. Because it can be accurately placed near the mouth, it is extremely easy to stabilize the placement position and posture compared to the case where an inner tube is placed by inserting it into a conventional connection mouth. Innachi It can be disposed over drive.

  Hereinafter, when an embodiment of the present invention is described with reference to the drawings, as shown in FIG. 1, a head protection airbag 19 of the first embodiment (hereinafter, simply referred to as an airbag unless otherwise specified) The airbag device M used for protecting the head mounted on the vehicle V is used. The airbag device M includes an airbag 19, an inflator 12, mounting brackets 10 and 13, and an airbag cover 8. The airbag 19 extends from the lower edge side of the front pillar portion FP to the upper side of the rear pillar portion RP from the lower edge side of the front pillar portion FP on the upper edge side of the side windows W1 and W2 on the inner side of the vehicle V. And is expanded and expanded downward from the upper edge side of the side windows W1 and W2 of the storage site so as to cover the inside of the side windows W1 and W2 when the inflating gas flows.

  As shown in FIG. 1, the inflator 12 is a substantially cylindrical cylinder type, and is inserted into a connection port portion 28 for allowing the inflation gas to flow into the airbag 19 and is clamped from the periphery using a clamp 15. The bag 19 is connected. The inflator 12 is attached and fixed to the inner panel 2 of the roof side rail portion RR near the upper portion of the center pillar portion CP by being covered with the lower edge of the roof head lining 5 using the mounting bracket 13. . The inner panel 2 is a member on the body (vehicle body) 1 side of the vehicle V. The mounting bracket 13 is made of sheet metal, holds the inflator 12, and is fixed to the inner panel 2 using the mounting bolts 14.

  Further, the inflator 12 is configured to flow the inflation gas G to the front side of the vehicle along the axial direction of the inflator 12 mounted on the vehicle V during operation. The expanded gas G is guided by the inner tube 86 disposed in the connection port 28, changes its direction downward, and further flows to the front and rear sides in the airbag body 20 of the airbag 19. (See FIG. 2).

  As shown in FIG. 1, each mounting bracket 10 is made of sheet metal and is attached to each mounting portion 25 of the airbag 19, and each mounting portion 25 is fixedly attached to the inner panel 2 by mounting bolts 11.

  The airbag cover 8 is configured from the lower edge side of each of the front pillar garnish 4 disposed in the front pillar portion FP and the roof head lining 5 disposed in the roof side rail portion RR. The front pillar garnish 4 and the roof head lining 5 are made of synthetic resin, and are fixedly attached to the inner side of the inner panel 2 of the body 1 at the front pillar portion FP and the roof side rail portion RR, respectively. . Further, the roof head lining 5 is disposed from the vicinity above the front pillar portion FP to the vicinity above the rear pillar portion RP via the center pillar portion CP.

  As shown in FIG. 2, the airbag 19 includes an airbag body 20 and an inner tube 86. The airbag main body 20 is configured to include a deployment inflating portion 21 and a connection port portion 28. The expansion / expansion part 21 flows in the expansion gas G from the inflator 12 and expands from the folded state, and the side windows W1, W2, the center pillar part CP, the center pillar garnish 7 of the rear pillar part RP, and the rear pillar garnish 6 It expands and expands so as to cover the inside of the vehicle (see the two-dot chain line in FIG. 1).

  The connection port portion 28 has a substantially cylindrical shape and is disposed near the middle in the front-rear direction on the upper edge 21a side of the expansion / expansion portion 21 so that the expansion gas G can flow into the expansion / expansion portion 21. Are connected via an inner tube 86 and an inflator 12. In the case of 1st Embodiment, the connection port part 28 is formed so that it may extend in the back diagonally upward direction from the expansion | deployment expansion part 21. FIG.

  The inner tube 86 has a cylindrical shape and is disposed between the inner peripheral surface of the connection port portion 28 and the outer peripheral surface of the inflator 12, so that the inflation gas G from the inflator 12 is expanded and inflated in the airbag body 20. 21 is provided to increase the heat resistance of the connection port portion 28. As shown in FIGS. 2 and 8, the inner tube 86 is arranged on the upper end 86 a side and inserts the inflator 12 into the insertion port portion 87 and the lower end 87 b of the insertion port portion 87. And a possible outlet part 88. And the outflow part 88 is formed in the cylinder shape which follows an axial direction substantially in the front-back direction, and can branch into the front-back both sides at the lower end 87b of the insertion port part 87, and can flow the expansion gas G to the front side. The front outlet part 89 and the rear outlet part 90 from which the expansion gas G can flow out to the rear side are provided. In the case of the first embodiment, the insertion port portion 87 has a cylindrical shape so that the axial direction extends substantially in the vertical direction, but in correspondence with the inclination protruding from the expansion / expansion portion 21 of the connection port portion 28, The lower end 87b is inclined and disposed so as to be shifted obliquely forward and downward from the upper end 87a. Therefore, in this inner tube 86, the expansion gas G flowing from the upper end 87a to the lower end 87b in the insertion port portion 87 is configured to easily flow out from the front front outlet portion 89. Therefore, in the inner tube 86 of the first embodiment, the outlet 90a of the rear outlet 90 is provided so that the expansion gas G flows out from the front outlet 89 and the rear outlet 90 equally to both the front and rear sides. The opening area 89 is larger than the outlet 89a of the front outlet 89, and the expansion gas G is easily flowed out.

  As shown in FIG. 2, the deployment inflating portion 21 of the airbag body 20 is a front seat inflating portion that covers the inside of the side window W1 and the center pillar portion CP and the inside of the front side of the side window W2. 23 and a rear seat inflating portion 24 that covers the rear side of the side window W2 and the inner side of the front side of the rear pillar portion RP, and communicates with the connecting port portion 28 to A conduit portion 22 is provided to guide the inflation gas G to the front seat expansion portion 23 and the rear seat expansion portion 24. The front seat inflating portion 23 and the rear seat inflating portion 24 are configured by disposing a plurality of cells 23a and 24a. The plurality of cells 23a, 24a are partitioned so as to be juxtaposed along the front-rear direction by cell partition portions 35a, 45a, 57 (57a, 57b), and are arranged so as to swell in a bag shape. Furthermore, a plurality of attachment portions 25 having attachment holes 25a through which the attachment bolts 11 (see FIG. 1) are inserted are arranged on the upper edge 21a side of the expansion / expansion portion 21. An attachment belt 26 provided with an attachment portion 25 is attached to the front end of the deployment / expansion portion 21.

  A plate-like portion 61 that does not allow the inflation gas G to flow in is disposed between the front seat inflation portion 23 and the rear seat inflation portion 24 on the lower edge 21b side of the deployment inflation portion 21.

  In addition, in the portion of the plate-like portion 61, a pull-out portion 62 is formed by pulling out the vehicle inner side seat 51 and the vehicle outer side seat 52 (see FIGS. 3 and 5). The application cloth 27 is stitched to the drawing-out portion 62 including the region of the plate-like portion 61. In the case of the first embodiment, the pulled-out cloth material is used to form the inner tube 86 as the tube sheet 92 (see FIG. 8). The tube sheet 92 has a substantially inverted trapezoidal shape in which the inner tube 86 is flatly overlapped in the vehicle interior / exit direction and connected on the front edge 87c side of the insertion port 87. Therefore, the tube sheet 92 has a fold 93 at a portion on the front edge 87c side of the insertion port portion 87, and is folded in two, and the lower edge 88b side of the outlet port 88 on the outer peripheral edge and the insertion port The inner tube 86 can be formed by suturing the portion from the rear edge 87d side of the portion 87 to the upper edge 88a side of the outlet portion 88 in the area of the rear outlet portion 90 as the stitching portions 94 and 95. In the case of the first embodiment, the inner tube 86 uses two tube sheets 92 pulled out from the vehicle inner side seat 51 and the vehicle outer side seat 52 in an overlapping manner (see FIG. 4).

  As shown in FIGS. 1 to 3, the airbag main body 20 according to the first embodiment has bag woven bag portions 30 and 40 disposed on the front end side and the rear end side, and the front and rear bag woven bag portions 30. , 40, and a sewing bag portion 50 is disposed between them. The front end side bag weaving bag portion 30 constitutes the front side of the front seat inflating portion 23 of the deployment inflating portion 21, and the rear end side bag weaving bag portion 40 is the rear seat inflating portion of the unfolding expansion portion 21. 24 is constituted. The sewing bag portion 50 includes a rear side of the front seat inflating portion 23 of the inflating portion 21, a portion of the conduit portion 22, and a connection port portion 28, that is, an intermediate portion in the front-rear direction of the inflating portion 21 in the airbag body 20. The part and the connection port part 28 which is a part except the deploying and inflating part 21 in the airbag main body 20 are configured. The bag woven bag portions 30 and 40 and the sewing bag portion 50 are respectively arranged in the region from the upper edge 21a to the lower edge 21b of the deployment inflating portion 21 and along the front-rear direction of the deployment inflating portion 21. It is installed side by side.

  The bag weave bag portions 30 and 40 are formed from bag weaves using yarns made of synthetic fibers such as polyamide and polyester, as shown in FIGS. Thus, the gas inflow portions 31 and 41 that can be inflated so as to separate the vehicle interior side wall portions 32 and 42 and the vehicle exterior wall portions 33 and 43 in the vehicle interior and exterior directions, the vehicle interior side wall portions 32 and 42, and the vehicle exterior wall portions 33 and 43. And peripheral edge portions 35 and 45 that divide the peripheral edges of the gas inflow portions 31 and 41. The peripheral portions 35 and 45 include cell partition portions 35a and 45a extending linearly so as to enter the gas inflow portions 31 and 41 in order to partition the plurality of cells 23a and 24a. In addition, since it is difficult to provide the bag-woven bag portions 30 and 40 on the inner peripheral surface side, the bag-woven bag portions 30 and 40 are configured by providing a coating layer made of silicon rubber or the like for preventing gas leakage on the outer peripheral surface side. Further, on the back end (rear edge) 30c side of the bag weave bag portion 30 and the front end (front edge) 40c side of the bag weave bag portion 40, there are connecting edges 37 and 47 for joining with the sewing bag portion 50, It is formed over the entire area from the upper edge 21a to the lower edge 21b of the developed and expanded portion 21.

  As shown in FIGS. 3, 5, 9, and 11, the coupling edge 37 disposed on the rear edge 30 c of the bag-woven bag portion 30 is provided on each of the vehicle inner wall portion 32 and the vehicle outer wall portion 33 of the gas inflow portion 31. Consecutively, from the upper edge 30a to the lower edge 30b of the bag-woven bag portion 30, the positions of the upper end 36a and the lower portion 36b of the rear end 36 of the peripheral edge 35 are opposed to each other in the vehicle interior and exterior direction, and the vehicle interior I And a vehicle outer side seam portion 38 and a vehicle outer side seam allowance portion 39 which are separated from each other. As shown in FIGS. 3, 6, 10, and 12, the connecting edge 47 disposed on the front edge 40 c of the bag-woven bag portion 40 is provided on each of the vehicle inner wall portion 42 and the vehicle outer wall portion 43 of the gas inflow portion 41. Consecutively, from the upper edge 40a to the lower edge 40b of the bag-woven bag portion 40, the front end 46 of the peripheral edge portion 45 is opposed to the front side of the upper portion 46a and the lower portion 46b in the vehicle interior and exterior direction, and A belt-like inner seam allowance portion 48 and an outer carrotation allowance portion 49 that are separated from each other by the outer side O are configured.

  As shown in FIGS. 2 to 6, the sewing bag portion 50 is formed by stitching a vehicle inner side sheet 51 and a vehicle outer side sheet 52 made of a woven fabric woven with synthetic fibers such as polyamide and polyester. . In the case of the first embodiment, a coating layer made of silicon rubber or the like for preventing gas leakage is provided on a portion of the inner seat 51 and the outer seat 52 on the inner peripheral surface side of the airbag body 20. ing. And the sewing bag part 50 is provided with the gas introduction part 53 which can communicate with the gas inflow parts 31 and 41 of the bag weave bag parts 30 and 40, and can flow in the gas G for expansion | swelling. A partition stitching portion 54 for stitching 51 and the vehicle exterior seat 52 is provided. In the case of the first embodiment, the gas introducing portion 53 includes two cells 23a on the rear side of the front seat inflating portion 23 in the deploying inflating portion 21, the conduit portion 22, and the connection port portion 28 of the airbag body 20. Is arranged. And in the case of 1st Embodiment, the gas introduction part 53 connects the front-end part 53a with the connection part 31a of the rear-end side of the gas inflow part 31 of the bag weave bag part 30, and the rear-end part 53b is a bag-woven bag. It connects with the connection part 41a of the front-end side of the gas inflow part 41 of the part 40 (refer FIG. 9, 10). The connecting portion 31a of the gas inflow portion 31 on the front side is opened over substantially the entire region from the upper edge 30a to the lower edge 30b of the bag-woven bag portion 30, and the front end portion 53a is connected corresponding to the opening. It becomes. Further, the connecting portion 41a of the rear gas inflow portion 41 is opened to communicate with the conduit portion 22, and the rear end portion 53b is connected corresponding to the opening (see FIG. 5). ).

  The division stitching portion 54 is formed by using a suture S made of a synthetic fiber such as polyamide or polyester, and is a conduit portion on the upper edge 21a side (the upper edge 50a side of the sewing bag portion 50) of the deployed inflating portion 21. 22 is formed so as to divide the upper edge 22a side and the peripheral edge of the connection port portion 28, and the lower edge 21b side (the lower edge 50b side of the sewing bag portion 50) of the deployed inflating portion 21. The lower edge partition part 56 and the cell partition part 57 are comprised (refer FIG. 2).

  The upper edge partition part 55 is composed of a front side part 55 a including the front edge side of the connection port part 28, and a rear side part 55 c including the rear side of the connection port part 28. The upper edge section 55 has a vicinity of the front edge of the connection port portion 28 as a co-sewn portion 58 that is sewn together with the front edge 87c of the insertion port portion 87 of the inner tube 86, and the rear edge of the connection port portion 28. The inner tube 86 is attached and fixed to the connection port portion 28 as a joint portion 59 that is sewn together with the rear edge 87d of the insertion port portion 87 of the inner tube 86 and the upper edge 88a of the outflow port portion 88. ing.

  The lower edge partitioning part 56 passes through the front edge 61a of the plate-like part 61 from the lower edge 21b on the rear part side of the front seat inflating part 23 to the upper edge 61b side of the plate-like part 61, that is, below the conduit part 22. It arrange | positions so that the edge 22b side may be divided.

  The cell partition part 57 partitions the cell 23a, and includes an upper part 57a and a lower part 57b formed so as to extend continuously from the lower edge partition part 56. The upper portion 57a is disposed so as to extend forward from the upper edge 61b of the plate-like portion 61 so as to define the lower edge 22b side of the conduit portion 22 and to extend obliquely forward and downward, and the lower portion 57b. Is arranged to extend upward so as to approach the lower edge 22b of the conduit portion 22 from the lower edge 21b side of the deploying and expanding portion 21.

  The section stitching portion 54 is formed by a lock stitch using the suture S, and the lock stitch using the suture S is connected to the attachment belt 26 and longitudinal stitches 71, 72, 73, 74, which will be described later. It is also employed in the transverse stitching portions 81, 82, 83, 84.

  And, as shown in FIGS. 3, 5, 9, and 11, the connecting edge 63 of the sewing bag portion 50 with the bag weave bag portion 30 side is from the upper edge 50 a to the lower edge on the front edge 50 c side of the sewing bag portion 50. Up to 50b, it is configured as edge seam allowance portions 65, 66 in which the vehicle inner side seat 51 and the vehicle outer side seat 52 are separated from each other in the vehicle inside / outside direction. Further, as shown in FIGS. 3, 5, 10, and 12, the connecting edge 64 with the bag woven bag part 40 side is the vehicle inner side from the upper edge 50 a to the lower edge 50 b on the rear edge 50 d side of the sewing bag part 50. It is comprised as the edge seam allowances 67 and 68 which isolate | separated the sheet | seat 51 and the vehicle outer side sheet | seat 52 mutually in the vehicle inside / outside direction.

  In addition, the length dimension WL (refer FIG. 5) of the front-back direction of the connection edges 37, 47, 63, and 64 of the bag weave bag parts 30 and 40 and the sewing bag part 50 is about 40 mm.

  The joint edges 37, 47, 63, and 64 are joined together by vertically stitching portions 71, 72, 73, and 74 (see FIGS. 9 and 10) that are sewn along the vertical direction, and stitches along the front and rear direction. The transverse stitching portions 81, 82, 83, and 84 (see FIGS. 11 and 12) are performed.

  In the case of the first embodiment, more specifically, as shown in FIG. 9, the longitudinal stitching portions 71 and 72 of the bag woven bag portion 30 and the sewing bag portion 50 are connected to the front bag woven bag portion 30. The inner seam allowance portion 38 of the edge 37 and the end edge seam allowance portion 65 of the connecting edge 63 of the front edge 50c of the sewing bag portion 50 form a vertical stitching portion 71 of a palm seam specification 77, and are joined together. The outer side seam allowance 39 of the joint edge 37 of the woven bag part 30 and the end seam allowance 66 of the joint edge 63 of the front edge 50c of the sewing bag part 50 form a vertical stitching part 72 of the overlap stitch specification 76. Are combined. The joint seam specification 77 is a specification in which the edge seam allowance part and the inner seam allowance part or the car outer seam allowance part are overlapped and stitched so that the surfaces on the inner peripheral surface side of the inflated and expanded part 21 are aligned with each other. Yes, in the case of the first embodiment, it is pulled out to the vehicle inner side I so as to match the surfaces that are the inner peripheral surface side of the deployed and expanded portion 21 of the edge margin allowance portion 65 and the vehicle inner margin allowance portion 38, The stitches are overlapped in the direction along the front-rear direction and stitched, and the seam allowance portion 77a is further piled on the bag woven bag portion 30 side. The overlap stitch specification 76 is a specification in which the edge seam allowance portion and the vehicle inner seam allowance portion or the vehicle outer seam allowance portion are overlapped and stitched in the vehicle inside / outside direction. In the case of the first embodiment, the edge seam allowance portion 66 is used. And the outside seam allowance portion 39 are overlapped and stitched in the vehicle inside / outside direction. Further, in the vertical stitching portion 72 of the overlap stitch specification 76 in the case of the first embodiment, the edge margin allowance 66 on the sewing bag portion 50 side is arranged on the vehicle outer side O of the vehicle outer stitch allowance 39, and the vehicle The coating layers (not shown) of the outer sheet 52 and the vehicle outer wall portion 33 are in contact with each other.

  If the vertical stitching portion 71 on the inner side I of the sewing bag portion 50 and the vertical stitching portion 72 on the outer side O of the sewing bag portion 50 are separate specifications of the overlap stitching specification 76 and the seam stitching specification 77, the sewing is performed later. Prior to the possible seam stitching specification 77, stitching with the overlap stitching specification 76 is performed.

  With respect to the longitudinal stitching portions 73 and 74 between the bag weaving bag portion 40 and the sewing bag portion 50, as shown in FIG. The edge seam portion 67 of the joint edge 64 of the rear edge 50d is connected to the vertical seam portion 73 of the joint seam specification 77, and the seam portion 77a is overlapped with the bag weave bag 40 side. . Further, the outside seam allowance part 49 of the joint edge 47 of the bag weave bag part 40 and the end seam allowance part 68 of the joint edge 64 of the rear edge 50d of the sewing bag part 50 are the vertical stitching part 74 of the overlap stitch specification 76. To form a bond. Also in the vertical stitching portion 74 of the overlap stitch specification 76 in this case, the edge margin allowance 68 on the sewing bag portion 50 side is arranged on the vehicle outer side O of the vehicle outer stitch allowance 49 so that the vehicle outer seat 52 and the vehicle outer side are arranged. The coating layers (not shown) with the wall 43 are brought into contact with each other.

  If the vertical stitching portions 71, 72, 73, 74 are simply provided, the gas inflow portions 31, 41 of the bag weave bag portions 30, 40 and the gas introduction portion 53 of the sewing bag portion 50 are separated from each other. The upper edge 21a and the lower edge 21b of 21 are opened so as to penetrate vertically. This is because, in the region of each connecting edge 37, 47, 63, 64, the rear edge 36 and the front edge 46 of the peripheral edge parts 35, 45 formed by bag weaving, or the upper edge partition part 55 and the lower edge in the partition stitching part 54 Regions where the front ends 55b and 56a and rear ends 55d and 56b of the partition portion 56 do not exist, and the peripheral portions 35 and 45 and the partition stitch portion 54 (the upper edge partition portion 55 and the lower edge partition portion 56) do not exist. , The stitching line of the lock stitch along the vertical direction by the suture S is provided from the upper edge 21a to the lower edge 21b of the deploying and expanding portion 21 at the overlapping portions of the corresponding coupling edges 37, 47, 63, 64. The connecting edges 37, 47, 63, 64 are simply stitched together to provide the vertical stitching portions 71, 72, 73, 74. Therefore, the region from the vertical stitching portions 71, 72, 73, 74 to the peripheral edge portions 35, 45 and the partition stitching portion 54 in the vicinity in the front-rear direction is open so as to penetrate vertically.

  Then, as shown in FIG. 11, the side stitching portion 81 on the upper side of the bag weaving bag portion 30 and the sewing bag portion 50 has a partition stitching portion 54 of the sewing bag portion 50 and a front end 55b of the upper edge partitioning portion 55. Are connected to the upper lower edge 35b of the peripheral edge portion 35 of the bag-woven bag portion 30 so that the vehicle inner side seat 51, the vehicle outer side seat 52, and the bag-woven bag portion 30 of the sewing bag portion 50 are substantially in the front-rear direction. It is formed by sewing along. The upper lower edge 35b of the peripheral edge 35 is the rear edge of the peripheral edge 35 in the vicinity of the connecting edge 37 as a boundary part of the upper edge that becomes the vertical edge of the gas inflow part 31 in the rear edge 30c of the bag-woven bag part 30. It is a site | part arrange | positioned along the front-back direction at the upper part 36a side of 36. In the case of the first embodiment, the upper edge section 55 is positioned below the upper lower edge 35b so that the vicinity of the front edge 55b is parallel to the upper lower edge 35b, and the side stitching portion 81 is located from the front edge 55b. A horizontal line portion 81a extending forward along the front-rear direction and a diagonal line portion 81b extending diagonally forward and upward from the front end of the horizontal line portion 81a and intersecting the upper lower edge 35b.

  Further, as shown in FIG. 11, the lower side stitching portion 82 includes a section stitching portion 54 of the sewing bag portion 50, a front end 56 a of the lower edge partitioning portion 56, and a peripheral edge portion 35 of the bag woven bag portion 30. It is formed by stitching the vehicle inner side seat 51, the vehicle outer side seat 52, and the bag woven bag portion 30 of the sewing bag portion 50 along the substantially front-rear direction so as to be connected to the lower upper edge 35c. Yes. The lower upper edge 35c of the peripheral edge 35 is the rear edge of the peripheral edge 35 in the vicinity of the joint edge 37 as a boundary portion of the lower edge that becomes the vertical edge of the gas inflow portion 31 in the rear edge 30c of the bag-woven bag portion 30. This is a portion arranged along the front-rear direction on the lower part 36 b side of the end 36. In the case of the first embodiment, the lower edge section 56 is positioned above the lower upper edge 35c so that the vicinity of the front edge 56a is parallel to the lower upper edge 35c, and the side stitching portion 82 is A horizontal line portion 82a extending forward from 56a in the front-rear direction, and a diagonal line portion 82b extending diagonally forward and downward from the front end of the horizontal line portion 82a and intersecting the lower upper edge 35c.

  As shown in FIG. 12, the side stitching portion 83 on the upper side of the bag weaving bag portion 40 and the sewing bag portion 50 has a section stitching portion 54 of the sewing bag portion 50, and a rear end 55d of the upper edge partitioning portion 55. The vehicle inner side seat 51, the vehicle outer side seat 52, and the bag woven bag portion 40 of the sewing bag portion 50 are arranged substantially in the front-rear direction so as to be connected to the upper lower edge 45 b of the peripheral edge portion 45 of the bag woven bag portion 40. It is formed by stitching along. The upper lower edge 45b of the peripheral edge 45 is a front edge 46 of the peripheral edge 45 in the vicinity of the connecting edge 47 as a boundary portion of the upper edge that becomes the vertical edge of the gas inflow portion 41 in the front edge 40c of the bag-woven bag portion 40. It is a site | part arrange | positioned along the front-back direction by the upper part 46a side. In the case of the first embodiment, the upper edge section 55 is positioned below the upper lower edge 45b so that the vicinity of the rear edge 55d is parallel to the upper lower edge 45b. A horizontal line portion 83a extending rearward along the front-rear direction from 55d, and a diagonal line portion 83b extending obliquely rearward upward from the rear end of the horizontal line portion 83a and intersecting the upper lower edge 45b.

  Further, in the lateral side stitching portion 84 on the lower side, as shown in FIG. 12, the division stitching portion 54 of the sewing bag portion 50 is connected to the rear end 56 b of the lower edge division portion 56, and the peripheral edge portion 45 of the bag woven bag portion 40. It is formed by sewing the vehicle inner side sheet 51, the vehicle outer side sheet 52, and the bag woven bag part 40 of the sewing bag part 50 substantially in the front-rear direction so as to be connected to the lower upper edge 45c of the bag. ing. The lower upper edge 45c of the peripheral edge 45 is a front edge of the peripheral edge 45 in the vicinity of the connecting edge 47 as a boundary portion of the lower edge that becomes the vertical edge of the gas inflow portion 41 in the front edge 40c of the bag-woven bag portion 40. 46 is a portion disposed along the front-rear direction on the lower portion 46 b side of 46. In the case of the first embodiment, the lower edge partitioning portion 56 has its vicinity in the vicinity of the rear end 56b along a straight substantially front-rear direction that slightly rises rearward, and the rear end 56b with the lower upper edge 45c. The horizontal stitching portion 84 is arranged so that the height positions in the vertical direction substantially coincide with each other, and the horizontal stitching portion 84 extends in a diagonally upward direction from the rear end 56b along the inclined direction near the rear end 56b, and a horizontal line portion 84a The hatched portion 84b extends obliquely rearward and downward from the rear end that is higher above the lower upper edge 45c and intersects the lower upper edge 45c.

  If these lateral stitching portions 81, 82, 83, 84 are formed, the peripheral edge portions 35, 45 at the peripheral edges of the partition stitching portion 54 of the sewing bag portion 50 and the gas inflow portions 31, 41 of the bag woven bag portions 30, 40. As a result, the vertical stitched portions 71, 72, 73, 74 that penetrate from the upper edge 21a to the lower edge 21b of the deployed and expanded portion 21 after the formation of the vertical stitched portions 71, 72, 73, 74 are obtained. The opening in the vicinity of is closed. The connecting portion 31a of the gas inflow portion 31 of the bag woven bag portion 30 and the front end portion 53a of the gas introducing portion 53 of the sewing bag portion 50 are communicated with each other with good sealing properties, and the gas inflow of the bag woven bag portion 40 is performed. The connecting portion 41a of the portion 41 and the rear end portion 53b of the gas introducing portion 53 of the sewing bag portion 50 are communicated with each other with good sealing performance.

  In addition, if the manufacture of the airbag 19 of 1st Embodiment is demonstrated, the bag weave bag parts 30 and 40 will be manufactured by bag weaving beforehand. Further, the inner tube 86 is also provided with stitching portions 94 and 95 in which two tube sheets 92 pulled out from the plate-like portion 61 of the vehicle inner side seat 51 and the vehicle outer side seat 52 of the sewing bag portion 50 are overlapped. It is manufactured (see FIG. 8). The sewing bag portion 50 is in a state in which the vehicle inner side seat 51 and the vehicle outer side seat 52 are separated from each other in a state in which the pull-out portion 62 is provided.

  First, as shown in FIGS. 6 and 9, the outer stitch margin 39 of the bag woven bag portion 30 and the edge margin allowance 66 of the sewing bag portion 50 are overlap stitch specifications 76 as described above. The vertical stitching portion 72 is formed by sewing, and the inner seam allowance portion 38 of the bag weave bag portion 30 and the edge margin seam allowance portion 65 of the sewing bag portion 50 are stitched together as described above. The vertical stitching portion 71 is formed by stitching with the specification 77.

  Next, the sewing bag portion 50 is manufactured while sewing the inner tube 86 together (see A in FIGS. 6 and 7). That is, the inner tube 86 is disposed in a portion where the connection port portion 28 of the vehicle outer seat 52 is formed in a state where the inner tube 86 is flatly deployed in the vehicle interior / exterior direction, and further, the vehicle interior seat 51 is overlapped, 58 and 59 are provided, and the inner side seat 86 and the outer side seat 52 are stitched together with the inner tube 86 being sewn together to form the front side portion 55a and the rear side portion 55c of the upper edge partition portion 55, and The gas introduction part 53 is formed by forming the lower edge partition part 56 and another partition stitching part 54 of the cell partition part 57. At that time, the patch cloth 27 is also stitched, and as shown in FIG. 11, lateral stitching portions 81 and 82 are also formed. The co-sewn portion 58 is a stitched portion between the front side portion 55 a of the upper edge partition portion 55 and the front edge 87 c of the insertion opening 87 of the inner tube 86, and the co-sewn portion 59 is the rear portion of the upper edge partition portion 55. This is a stitched portion between the side portion 55 c and the rear edge 87 d of the insertion port portion 87 of the inner tube 86 and the upper edge 88 a of the outflow port portion 88.

  Then, as shown in FIG. 7B and FIG. 10, the edge stitch margin 68 of the sewing bag portion 50 and the outer stitch margin 49 of the bag woven bag portion 40 are overlapped as described above. 76, the vertical stitching portion 74 is formed, and the edge margin seam portion 67 of the sewing bag portion 50 and the inner side seam allowance portion 48 of the bag woven bag portion 40 are joined as described above. A vertical stitching portion 73 is formed by sewing with a sewing specification 77. Further, as shown in FIG. 12, the airbag 19 can be manufactured by forming the lateral stitching portions 83 and 84.

  The attachment belt 26 is appropriately sewn to the front end side of the bag-woven bag portion 30 immediately after the manufacture of the bag-woven bag portion 30 itself or when the manufacture of the airbag 19 is completed.

  The process until the airbag 19 manufactured in this way is mounted on the vehicle V will be described. First, the airbag 19 is flatly deployed, and the lower edge 21b side of the airbag 19 is brought closer to the upper edge 21a side. As described above, the airbag 19 is folded using both roll folding and bellows folding. After the airbag 19 is folded, a predetermined portion of the airbag 19 is wrapped with a breakable tape (not shown) for preventing collapse, and the inflator 12 and the mounting brackets 10 and 13 are attached, and the airbag is assembled. Form the body. Thereafter, the mounting brackets 10 and 13 are arranged at predetermined positions on the inner panel 2 on the body 1 side, and the mounting bolts 11 and 14 are tightened by inserting the mounting holes 25a, for example. The airbag assembly is fixed to the inner panel 2 and attached to the body 1. Next, a lead wire (not shown) extending from a predetermined control device for operating the inflator is connected to the inflator 12, the front pillar garnish 4 and the roof head lining 5 are attached to the body 1, and the rear pillar garnish 6 and the center pillar garnish 7 are further attached. If attached to the body 1, the airbag device M can be mounted on the vehicle V.

  If the inflator 12 is actuated after the air bag device M is mounted on the vehicle V, the inflation gas G from the inflator 12 becomes the inner tube 86 in the connection port 28 as shown by the two-dot chain line in FIG. Flow into. In the inner tube 86, the expansion gas G flows into the outlet part 88 from the insertion port part 87, and further from the outlets 89a and 90a of the front outlet part 89 and the rear outlet part 90 to the conduit part 22. It flows out to both front and rear. Further, the inflating gas G flows into the front seat inflating portion 23 and the rear seat inflating portion 24, and the front seat inflating portion 23 and the rear seat inflating portion 24 are unfolded while being unfolded. Then, it begins to expand further. Therefore, the deploying and inflating portion 21 in the airbag body 20 of the airbag 19 breaks the wrapped tape (not shown), and further pushes open the airbag cover 8 on the lower edge side of the front pillar garnish 4 and the roof head lining 5. Thus, as shown by a two-dot chain line in FIG. 1, while expanding downward, it expands and expands so as to cover the vehicle interior I of the side windows W1, W2, the center pillar portion CP, and the rear pillar portion RP.

  And in the airbag 19 of this 1st Embodiment, when manufacturing the vicinity of the connection port part 28 of the airbag main body 20, the inner tube 86 is arrange | positioned between the vehicle interior seat 51 and the vehicle exterior seat 52, and it connects. The upper edge section 55 is sewn while the seams 58 and 59 located on the outer peripheral edge of the mouth section 28 are stitched together, and further, the lower edge section 56 and the cell of the section stitching section 54 in other portions. If the partition part 57 is also formed and the gas introduction part 53 into which the inflation gas G can be introduced is formed, the sewing bag part 50 can be manufactured, and the inner tube 86 is not displaced, and the connection port part 28 is not displaced. It will be attached and arranged.

  That is, the inner tube 86 is sewn together when the sewing bag portion 50 of the airbag body 20 is manufactured, and is positioned and attached in the connection port portion 28. Therefore, the inner bag 86 is simply manufactured. Therefore, the inner tube 86 can be disposed at a predetermined position without any deviation, and the airbag 19 can be easily manufactured.

  Therefore, the airbag 19 of the first embodiment can be easily manufactured even if the inner tube 86 is disposed in the connection port portion 28 of the airbag body 20.

  In particular, in the inner tube 86 of the first embodiment, an insertion port 87 that is disposed on the upper end 86a side and into which the inflator 12 is inserted, and a flow that can flow out the expansion gas G continuously to the lower end 87b side of the insertion port 87. The outlet portion 88 is formed in a cylindrical shape provided with an outlet portion 88. The outlet portion 88 branches to the front and rear sides at the lower end 87b of the insertion port portion 87, and a front outlet portion 89 that can flow the expansion gas G to the front side. And a rear outlet part 90 that can flow the expansion gas G to the rear side. In such an inner tube 86, the outlet part 88 side is disposed on the conduit part 22 side of the expanding and inflating part 21 away from the opening 28 a (see FIGS. 2 and 7) at the upper end of the connection port part 28. Therefore, the expansion gas G needs to be arranged in consideration of an appropriate arrangement position and arrangement posture so that the expansion gas G flows out before and after the opposite direction. However, in the first embodiment, when the compartment inner stitch portion 54 is formed by sewing the vehicle inner side seat 51 and the vehicle outer side seat 52 of the sewing bag portion 50 to each other, The inner tube 86 is simply flattened and arranged on the side of the inner seat 51, and the other inner seat 51 or the outer seat 52 is overlapped and co-sewn, so that the vicinity of the predetermined connection port portion 28 is obtained. In addition, since the inner tube can be accurately arranged, the arrangement position and the posture can be stabilized very easily and compared with the case where the inner tube is inserted into the conventional connection port portion, and the inner bag is provided for each airbag 19. A tube 86 can be provided.

  Moreover, in the airbag 19 of 1st Embodiment, as shown to FIGS. 5-7, the coupling edges 37 and 47 to the sewing bag part 50 side of the bag weave bag parts 30 and 40 are the bag weave bag parts 30 and 40. It is comprised from the belt-shaped vehicle inner side seam allowance parts 38 and 48 and the vehicle outer side seam allowance parts 39 and 49 which are extended from the upper edge 30a, 40a to the lower edge 30b, 40b. As shown in FIGS. 9 and 10, the vehicle inner side seam allowance portions 38, 48 and the vehicle outer side seam allowance portions 39, 49 are connected to the vehicle inner side seat 51 and the vehicle outer side seat extending in the vertical direction of the sewing bag portion 50. If the vertical stitching portions 71, 72, 73, 74 are provided to the end edge seam allowance portions 65, 66, 67, 68 with 52 and stitched together, first, the bag woven bag portions 30, 40 and the sewing bag are provided. The portion 50 is connected to the vehicle interior side wall portions 32, 42 of the gas inflow portions 31, 41 and the vehicle interior seat 51 along the front-rear direction from the upper edges 30a, 40a, 50a to the lower edges 30b, 40b, 50b. And the vehicle outer side wall parts 33 and 43 and the vehicle outer side sheet | seat 52 are connected. At this time, the gas inflow portions 31 and 41 of the bag woven bag portions 30 and 40 and the gas introduction portion 53 of the sewing bag portion 50 penetrate vertically in the upper edge 21a and the lower edge 21b of the airbag 19. So that it is open.

  Thereafter, as shown in FIGS. 11 and 12, the side stitching portions 81 and 82 for stitching the vehicle inner side seat 51, the vehicle outer side seat 52, and the bag woven bag portions 30 and 40 of the sewing bag portion 50 substantially in the front-rear direction. , 83, and 84, and the front ends 55b and 56a and the rear ends 55d and 56b of the partition stitching portion 54 of the sewing bag portion 50 are connected to the peripheral edge portion 35 of the periphery of the gas inflow portions 31 and 41 of the bag-woven bag portions 30 and 40. 45, the upper lower edge 35b and the lower upper edge 35c, or the upper lower edge 45b and the lower upper edge 45c are connected to each other, after forming the vertical stitching portions 71, 72, 73, 74. The opening that penetrates from the upper edge 21a to the lower edge 21b of the airbag 19 is closed, and the gas inflow portions 31, 41 of the bag-woven bag portions 30, 40 and the gas introducing portion 53 of the sewing bag portion 50 However, it has good sealing properties and communicates The Rukoto.

  Therefore, in the airbag 19 of the first embodiment, even when the bag woven bag portions 30 and 40 and the sewing bag portion 50 are connected and formed, the airbag 19 can be vertically arranged from the upper edge 21a to the lower edge 21b. By simply providing longitudinal stitching portions 71, 72, 73, 74 that sew the whole area along the side, and transverse stitching portions 81, 82, 83, 84 that connect the partition stitching portion 54 and the peripheral edge portions 35, 45, It can be easily formed (manufactured) with stitching while ensuring sealing performance.

  Moreover, in the structure of the airbag 19 of 1st Embodiment, it becomes possible to replace | exchange one of the bag woven bag parts 30 and 40 and the sewing bag part 50, and conversely, the other can be shared. Therefore, when the head protection airbag is mounted on a different vehicle, for example, if the bag portion 30 and 40 are shared, and the changed portion is handled by the sewing bag portion, the sewing bag portion When changing the length of the direction and the shape of the inflated part, it can be handled simply by changing the length of the inner seat or the outer seat of the vehicle to be used or by shifting the location of the stitched part. Compared to weaving, it can be changed easily. That is, in the configuration of the airbag 19 of the first embodiment, when manufacturing various variations of the head protection airbag, including the assembly of the inner tube 86, it can be easily handled, and the manufacturing man-hours and costs are reduced. Can be manufactured.

  For example, like the airbag 19A shown in FIG. 13, the connection port portion 28A of the sewing bag portion 50A is shifted rearward and obliquely separated from the deployment inflating portion 21 as compared with the sewing bag portion 50 of the airbag 19 shown in FIG. By changing the shape so as to extend in the front-up direction, the bag-woven bag portions 30 and 40 can be shared. Note that the inner tube 86 that is sewn together with the sewing bag portion 50A is sewn together with the sewing bag portion 50A in the same manner as the inner tube 86 of the airbag 19 shown in FIG.

  Moreover, in the airbag 19 of 1st Embodiment, the sewing bag part 50 is arrange | positioned between the two bag woven bag parts 30 and 40, and the vertical stitching parts 71, 72, 73, and 74 are sewn. Corresponding to the edge seam allowance portions 65, 66, 67, 68 of the vehicle inner side seat 51 and the vehicle outer side seat 52 at both front and rear ends of the bag portion 50, it will be arranged at four places. In addition, it is desirable that at least one of the vertical stitching portions 71, 72, 73, and 74 has a seam stitch specification 77 (see FIGS. 9, 10, and 14 to 16).

  That is, when the bag woven bag portions 30, 40 are connected to the front and rear of the sewing bag portion 50, the vertical stitching portions 71, 72, 73, 74 are connected to the vehicle interior seats 51 and the vehicle at both the front and rear ends of the sewing bag portion 50. It will be arranged at four places corresponding to the edge margins 65, 66, 67, 68 with the outer sheet 52, but if the palm stitch specification 77 is provided at at least one place, it will be smooth. In addition, the bag-woven bag portions 30 and 40 can be connected to the front and rear of the sewing bag portion 50 by the four vertical stitching portions 71, 72, 73 and 74. More specifically, for example, as in the airbag 19 (1) shown in FIG. 14, the vertical stitching portions 71, 72, and 74 are formed at the edge stitch margins 65, 66, and 68 and the vehicle interior side sewing. The seam 38 or the outside seam allowances 39 and 49 are overlapped and stitched with the stitches overlapped in the car interior and exterior direction, and the remaining vertical stitching part 73 is located at the edge seam allowance part 67 and the inside seam allowance part. 48. In that case, the outside seam allowance part 49 and the end edge seam allowance part 68 are already stitched by the overlap stitching specification 76 on the outside of the car, and the vertical stitching part 74 obstructs the end seam. In the overlap stitch specification 76 in which the margin seam allowance 67 and the vehicle inner seam allowance 48 are overlapped and stitched in the vehicle interior / exit direction, stitching cannot be performed. However, in the palm stitch specification 77, the inner seam allowance portion 48 and the edge seam allowance portion 67 can be made to match each other on the inner peripheral surface side of the airbag 19 (1). 14 can be pulled out from the airbag 19 (1) side and aligned so as to overlap in the front-rear direction, as shown by the two-dot chain line in FIG. The edge margin allowance 67 and the inboard margin allowance 48 which are overlapped with each other can be sewn by passing the suture thread S in the front-rear direction.

  In the airbag 19 (1) shown in FIG. 14, the longitudinal stitching portions 71 and 72 between the vehicle inner side I and the vehicle outer side O on the front edge 50c side, which is one end in the front-rear direction of the sewing bag portion 50, The state before the sewing bag portion 50 is formed, that is, if the compartment stitching portion 54 is not provided and the inner tube is not sewn together, the vehicle inner side seat 51 and the vehicle outer side seat 52 are greatly increased in the vehicle interior / exterior direction. Can be released. Therefore, both the vertical stitching portions 71 and 72 can be stitched according to the overlap stitching specification 76. And in this airbag 19 (1), the vertical stitching parts 71 and 72 of the vehicle inner side I and the vehicle outer side O are both stitched according to the overlap stitching specification 76, and then the partition stitching part is provided while the inner tube is stitched together. The sewing bag portion 50 is formed, and then, as described above, the vertical stitching portion 74 on the vehicle outer side O is overlapped and stitched on the rear edge 50d side which is the other end portion in the front-rear direction of the sewing bag portion 50. And the remaining longitudinally stitched portion 73 on the inner side of the vehicle may be sewn with a palm stitch specification 76.

  However, in the case where the sewing bag portion 50 is configured to include the partition stitching portion 54 that is previously sewn together with the inner tube, as in the first embodiment shown in FIGS. If the vertical stitching portions 71 and 73 are formed at the front and rear ends at one place, that is, at least one side of the vehicle inner side I or the vehicle outer side O with the seam stitch specifications 77, the sealing property can be easily secured. The bag-woven bag portions 30 and 40 can be connected to the front and rear of the sewing bag portion 50. In this case, the stitching of the overlap stitch specification 76 is performed first, and the stitching of the palm stitch specification 77 is performed at the vehicle inner side I or the vehicle outer side O. Then, as in the airbag 19 (2) shown in FIG. Alternatively, as in the airbag 19 (3) shown in FIG. 16, only at least one vertical stitching portion 74 is designated as a lap stitching specification 76, and the other three vertical stitching portions 71, 72, 73 are designated as palm stitching specifications. 77 can be sutured.

  Of course, as shown in FIG. 17, when the airbag 19 (4) is formed by simply connecting the bag-woven bag portion 30 and the sewing bag portion 50 (4) in the front-rear direction, the sewing bag portion 50 ( If the section stitching portion 54 for co-sewing the inner tube 86 of 4) is formed after the bag-woven bag portion 30 and the sewing bag portion 50 (4) are connected, the total of the vehicle inner side I and the vehicle outer side O The two vertical stitching portions 71 and 72 can be formed by stitching according to the overlap stitching specification 76. In this case, of course, if the inner tube 86 is previously sewn together and the section stitching portion 54 is provided, one or both of the two vertical stitching portions 71 and 72 are joint stitch sewing specifications 77. It will be sutured.

  Further, when the bag weaving bag portion is provided before and after the sewing bag portion, the area occupied by the sewing bag portion 50 (5) is reduced as in the airbag 19 (5) shown in FIG. You may comprise so that the occupation area of 5) may be expanded. In this case, a part of the inner tube 86 may be disposed so that the vicinity of the front outlet 89 in the illustrated example may enter the gas inlet 31.

  In addition, in the inner tube 86 of the first embodiment, the tube seat 92 is folded in two so as to be overlapped along the vehicle interior / exterior direction with a crease 93 that extends along the front-rear direction of the mounted vehicle, The stitching portions 94 and 95 are stitched to form a cylindrical shape. However, like the airbag 19B of the second embodiment shown in FIGS. 19 to 21, the inner tube 86B that is sewn together with the sewing bag portion 50B can be of the same shape. You may comprise from the sheet | seat 92B for two tubes which has flexibility. The inner tube 86B includes two suture sheets 92B stacked in the vehicle interior / exterior direction, and a stitching portion 94 for stitching the lower edge 88b side of the outlet portion 88 at the outer periphery of the overlapped portion, and a rear portion of the insertion port portion 87. A stitching portion 95 for stitching a portion that is the upper edge 88a side of the outlet portion 88 in the area of the rear outlet portion 90 from the edge 87d side, and a stitching portion 96 that stitches the front edge 87c side of the insertion port portion 87. Formed and manufactured. The inner tube 86B is provided in the vicinity of the front edge of the connection port portion 28 when the sewing bag portion 50B is manufactured, when the front side portion 55a of the upper edge partition portion 55 of the partition stitch portion 54 is stitched. The stitching portion 58 is stitched together with the front edge 87c of the portion 87, and when the rear side portion 55c of the upper edge section 55 is stitched, the rear edge of the connection port portion 28 and the vicinity thereof are connected to the inner tube 86B. The inner tube 86B can be attached and fixed to the connection port portion 28 as a joint portion 59 that is sewn together with the rear edge 87d of the insertion port portion 87 and the upper edge 88a of the outflow port portion 88. The tube sheet 92 </ b> B is formed by being pulled out from the plate-like portion 61 of the vehicle interior sheet 51.

  Further, like the inner tube 86C of the airbag 19C of the third embodiment shown in FIGS. 22 to 24, a fold 93C that extends along the front-rear direction of the mounted vehicle is attached to the tube seat 92C, You may fold and form so that it may overlap along an inner-outer direction. The tube sheet 92 </ b> C has a substantially inverted trapezoidal shape in which the inner tube 86 </ b> C is flattened in the vehicle inside / outside direction and connected on the lower edge 88 b side of the outlet portion 88. Therefore, the inner tube 86C has a fold 93C at the portion of the tube sheet 92C on the side of the lower edge 88b of the outflow port 88, and is folded in two, and the front edge 87c side of the insertion port 87 at the outer peripheral edge overlapped. Is sewn as a stitching portion 96, and a portion from the rear edge 87d side of the insertion port portion 87 to the upper edge 88a side of the outlet portion 88 in the area of the rear outlet portion 90 is stitched as the stitching portion 95, the inner tube 86C. Can be formed. The inner tube 86C also has an insertion opening for the inner tube 86C in the vicinity of the front edge of the connection port portion 28 when the sewing bag portion 50C is manufactured, when the front side portion 55a of the upper edge partition portion 55 is sewn. The stitching portion 58 is sewn together with the front edge 87c of the portion 87, and when the rear side portion 55c of the upper edge partition portion 55 is stitched, the rear edge of the connection port portion 28 and the vicinity thereof are connected to the inner tube 86C. The inner tube 86 </ b> C can be attached and fixed to the connection port portion 28 as a co-sewn portion 59 that is sewn together with the rear edge 87 d of the insertion port portion 87 and the upper edge 88 a of the outflow port portion 88. In the case of the third embodiment, the tube sheet 92 </ b> C forming the inner tube 86 </ b> C is also formed by being pulled out from the vehicle interior sheet 51.

  Furthermore, like the sewing bag portion 50 of the airbag 19D of the fourth embodiment shown in FIGS. 25 and 26, the inner tube 86D may be formed in a cylindrical shape at the time of co-sewing. In this inner tube 86D, the same tube sheet 92 of the first embodiment is used. When manufacturing the sewing bag portion 50D, first, the tube seat 92 is folded in two with a crease 93 at a portion of the insertion port portion 87 on the front edge 87c side. It is set in a state where it is flatly developed at the position where the portion 28 is arranged. Next, when the compartment stitching portion 54 is formed by overlapping the vehicle inner side sheets 51, when the front side portion 55 a of the upper edge partition portion 55 is stitched, the vicinity of the front edge of the connection port portion 28 is formed on the insertion port portion 87 of the inner tube 86 D. The stitching portion 58 is sewn together with the front edge 87c, and when the rear side portion 55c of the upper edge partition portion 55 is stitched, the rear edge of the connection port portion 28 and the vicinity thereof are inserted into the insertion port portion of the inner tube 86D. 87, and the upper edge 88a of the outlet portion 88 and the upper edge 88a of the outlet portion 88 are sewn together, and when the upper portion 57a of the cell partition portion 57D in the partition stitch portion 54 is stitched, the outlet of the inner tube 86D As the co-sewn portion 60 for co-sewing the lower edge 88b of the portion 88, the inner tube 86D can be disposed at a predetermined position without deviation, and the sewing bag portion 50D can be easily manufactured. Air Production of Tsu grayed 19D also becomes able to be facilitated. Further, in the sewing bag portion 50D of the airbag 19D, the inner tube 86D itself can be formed into a cylindrical shape by simply sewing together the folded tube sheet 92 when the partition stitch portion 54 is stitched. This can save the trouble of separately forming the inner tube 86D into a cylindrical shape.

  The above-described configuration can also be performed by using two tube sheets 92B having the same shape as the inner tube 86E of the airbag 19E of the fifth embodiment shown in FIGS. The tube sheet 92B is the same as that of the second embodiment. When the sewing bag portion 50E is manufactured, the two tube sheets 92B are overlapped in the vehicle interior / exterior direction to connect the vehicle exterior sheet 52. At the position where the mouth portion 28 is placed in a flatly deployed state, when the compartment stitching portion 54 is formed by overlapping the vehicle inner side sheet 51, when the front side portion 55a of the upper edge compartment portion 55 is stitched, the connection port The vicinity of the front edge of the portion 28 is set as a co-sewn portion 58 that is sewn together with the front edge 87c of the insertion port portion 87 of the inner tube 86E, and the connection port portion 28 is sewn when the rear side portion 55c of the upper edge partition portion 55 is sewn. The rear edge and the vicinity thereof are set as a co-sewn portion 59 that is sewn together with the rear edge 87d of the insertion port portion 87 of the inner tube 86D and the upper edge 88a of the outflow port portion 88. Upper part 57 of part 57D When the seam is sewn, the inner tube 86E can be disposed at a predetermined position without any deviation if the seam is sewn as the co-sewn portion 60 for co-sewing the lower edge 88b of the outlet portion 88 of the inner tube 86E. The sewing bag portion 50E can be manufactured, and the airbag 19E can be easily manufactured. Further, even in the sewing bag portion 50E of the airbag 19E, the inner tube 86E itself can be formed into a cylindrical shape by simply sewing together the two tube sheets 92B when the partition stitching portion 54 is stitched. This can save the trouble of separately forming the inner tube 86E into a cylindrical shape.

  When the inner tube is formed into a cylindrical shape at the time of co-sewing, the tube sheet is partially sewn before the co-sewing, and the partially sewn tube sheet is used as the inner seat and the vehicle. It may be arranged between the outer sheet and sewed together. For example, in the inner tube 86 of the first embodiment shown in FIG. 8, only the stitching portion 94 of the tube sheet 92 is stitched, and the region related to the upper edge 88 a of the outlet portion 88 from the rear edge 87 d of the insertion port portion 87. May be placed between the vehicle inner side sheet 51 and the vehicle outer side sheet 52 so as not to be sewn, and may be sewn when the co-sewn portion 59 is sewn.

  Further, in the third embodiment shown in FIGS. 22 to 24, when the tube sheet 92C is folded in two with a fold 93C, the fold 93C is disposed in an area where the expansion gas G is easily hit. Compared to the inner tube 86 of the first embodiment, which is configured as the lower edge 88b side of the outlet portion 88 and the portion is formed by sewing, the heat resistance can be improved.

It is a schematic front view which shows the vehicle mounting state of the airbag apparatus for head protection in which the airbag of 1st Embodiment of this invention is used. It is a front view of the airbag of a 1st embodiment. It is a transverse cross section at the time of inflation in the airbag of a 1st embodiment, and corresponds to the III-III part of Drawing 2. It is a longitudinal cross-sectional view at the time of expansion | swelling in the airbag of 1st Embodiment, and respond | corresponds to the IV-IV site | part of FIG. It is a general | schematic disassembled perspective view which shows the structural member of the airbag of 1st Embodiment. It is a perspective view explaining the suturing process of the airbag of a 1st embodiment. It is a perspective view explaining the suturing process of the airbag of 1st Embodiment, and shows the state after FIG. It is a figure explaining manufacture of the inner tube used for a 1st embodiment. It is a general | schematic partial cross-sectional view at the time of expansion | swelling in the airbag of 1st Embodiment, and respond | corresponds to the IX-IX site | part of FIG. It is a general | schematic partial cross-sectional view at the time of expansion | swelling in the airbag of 1st Embodiment, and respond | corresponds to the XX site | part of FIG. It is an expansion schematic front view which shows the side stitching | suture part vicinity of the front part side of the airbag of 1st Embodiment. It is an expansion schematic front view which shows the side stitching | suture part vicinity of the rear part side of the airbag of 1st Embodiment. It is a front view of the airbag which shows the modification of 1st Embodiment. It is a general | schematic fragmentary cross-sectional view which shows the vertical stitching | suture part of the airbag which shows the other modification of 1st Embodiment. It is a general | schematic fragmentary cross-sectional view which shows the vertical stitching | suture part of the airbag which shows the further another modification of 1st Embodiment. It is a general | schematic fragmentary cross-sectional view which shows the vertical stitching | suture part of the airbag which shows another modification of 1st Embodiment. It is a front view of the airbag which shows the other modification of 1st Embodiment. It is a front view of the airbag which shows the further another modification of 1st Embodiment. It is a general | schematic disassembled perspective view which shows the structural member of the airbag of 2nd Embodiment. It is a front view of the airbag of 2nd Embodiment. It is a longitudinal cross-sectional view at the time of expansion | swelling in the airbag of 2nd Embodiment, and respond | corresponds to the XXI-XXI site | part of FIG. It is a figure explaining manufacture of the inner tube used for the airbag of a 3rd embodiment. It is a front view of the airbag of 3rd Embodiment. It is a longitudinal cross-sectional view at the time of expansion | swelling in the airbag of 3rd Embodiment, and respond | corresponds to the XXIV-XXIV site | part of FIG. It is a front view of the airbag of a 4th embodiment. It is a longitudinal cross-sectional view at the time of expansion | swelling in the airbag of 4th Embodiment, and respond | corresponds to the XXVI-XXVI site | part of FIG. It is a front view of the airbag of 5th Embodiment. It is a longitudinal cross-sectional view at the time of expansion | swelling in the airbag of 5th Embodiment, and respond | corresponds to the XXVIII-XXVIII site | part of FIG.

Explanation of symbols

19, 19 (1), 19 (2), 19 (3), 19 (4), 19 (5), 19A, 19B, 19C, 19D, 19E ... (head protection) airbag,
20 ... airbag body,
21 ... Deployment expansion part,
28, 28A ... Connection port,
21a, 30a, 40a, 50a ... upper edge,
21b, 30b, 40b, 50b ... lower edge,
30, 40 ... bag-woven bag part,
31, 41 ... Gas inflow part,
32, 42 ... the inner wall of the vehicle,
33, 43 ... Car outer wall,
35, 45 ... peripheral edge,
37, 47, 63, 64 ... coupling edges,
38,48 ... Inside seam allowance part,
39, 49 ... Outer seam allowance part,
50, 50 (4), 50A, 50B, 50C, 50D ... Sewing bag part,
51. Car interior seat,
52. Car outer seat,
53 ... Gas introduction part,
54 ... division stitching part,
58, 59, 60 ... co-sewn part,
65, 66, 67, 68 ... edge margins,
71, 72, 73, 74... Vertical coupling part,
76 ... Overlapping stitching specification,
77 ... Gassho stitching specification,
81, 82, 83, 84 ... transverse stitching part,
86, 86B, 86C, 86D, 86E ... Inner tube,
87 ... insertion slot,
88 ... Outlet part,
89 ... Front outlet part,
90 ... the rear outlet part,
92, 92B, 92C ... sheet for tube,
S ... suture,
G ... expansion gas,
W1, W2 ... side window,
I ... Inside the car,
O ... the outside of the car,
V: Vehicle.

Claims (2)

A deployment expansion portion that expands and expands from the upper edge side of the side window inside the vehicle that is folded and stored so as to cover the inside of the vehicle side window when the inflation gas flows in, and the deployment expansion portion An air bag having a cylindrical connection port connected to an inflator for supplying the inflation gas so that the inflation gas can flow into the deployment and inflation portion The body,
A cylindrical inner tube that is disposed between the inner peripheral surface of the connection port and the outer peripheral surface of the inflator, and guides the inflation gas from the inflator to the deployment and inflation portion of the airbag body;
It is configured to include a,
A compartment stitching portion formed by stitching an inner seat located on the inner side of the vehicle at the time of inflation and an outer seat located on the outer side of at least the connection port portion of the airbag body, and the compartment stitching portion A gas introducing portion surrounded by a gas introducing portion capable of introducing the inflation gas, and a sewing bag portion comprising:
The inner tube has a cylindrical shape including an insertion port portion that is arranged on the upper end side and into which the inflator is inserted, and an outlet port portion that is connected to the lower end side of the insertion port portion and can flow out the expansion gas. With
The outlet portion is branched to the front and rear sides at the lower end of the insertion port portion, a front outlet portion capable of flowing the expansion gas forward, and a rear outlet portion capable of flowing the expansion gas backward. And further comprising:
The inner tube is formed of a flexible tube sheet, and the tube sheet is folded in two at the front edge side of the insertion port, and folded in two. The lower edge side of the outlet portion at the peripheral edge and the portion that is the upper edge side of the outlet portion in the area of the rear outlet portion from the rear edge side of the insertion port portion are stitched as a stitched portion into a cylindrical shape A configuration to be formed;
In the state where the stitching portion is provided at a lower edge side portion of the outlet portion in the tube sheet folded in half and is partially formed in a tubular shape, when the sewing bag portion is formed, A co-sewn portion is formed between the outer side seat and is sewn together at the time of sewing of the partition stitch portion located at the outer peripheral edge of the connection port portion, and the inner tube is connected to the connection port portion. A head protection airbag configured to be attached to and disposed on,
The airbag body is
The sewn bag portion, and a bag weave bag portion which is disposed in the area of the deployed inflatable portion and is formed by bag weaving and communicated with the sewn bag portion, and
The sewing bag portion and the bag woven bag portion are arranged side by side along the front-rear direction, and formed by stitching and connecting the bag woven bag portion and the sewing bag portion,
The bag woven bag portion is
A gas inflow part capable of inflating the inflating gas from the connection port part through the gas introducing part of the sewing bag part to separate the inboard side wall part and the outboard side wall part in the inward and outward direction of the car; A peripheral portion that is disposed so as to combine the vehicle inner side wall portion and the vehicle outer side wall portion and defines a peripheral edge of the gas inflow portion;
The connecting edge with the sewing bag part side in the bag woven bag part,
Continuing to the vehicle inner wall portion and the vehicle outer wall portion of the gas inflow portion, respectively, facing from the upper edge to the lower edge of the bag weave bag portion in the vehicle outer direction, and between the vehicle inner side and the vehicle outer side. It is composed of a belt-like inner seam margin and an outer seam margin that are separated from each other,
The joint edge with the bag woven bag part side in the sewing bag part,
From the upper edge to the lower edge of the sewing bag portion, the vehicle inner seat and the vehicle outer seat are configured as an edge sewing margin portion that is separated from each other in the vehicle interior and exterior directions,
The edge seam allowance part of the vehicle interior sheet of the sewing bag part and the car interior seam allowance part of the bag weave bag part, and the edge seam allowance part of the vehicle exterior sheet of the sewing bag part And the mutual bag margin portion of the bag weave bag portion,
Each joined by a vertical stitching portion that stitches along the vertical direction; and
The section stitching portion of the sewing bag portion is
The peripheral portion of the peripheral portion of the gas inflow portion of the bag woven bag portion is communicated with the gas introduction portion and the portion of the gas inflow portion of the bag woven bag portion corresponding to the gas introduction portion. On the other hand, by providing a lateral stitching portion that stitches the vehicle inner seat, the vehicle outer seat, and the bag weave bag portion of the sewing bag portion along a substantially front-rear direction, and connected,
As a structure to be formed,
The sewing bag portion is disposed between the two bag woven bag portions,
The vertical stitching portions are arranged at four locations corresponding to the edge stitch margins of the vehicle inner seat and the vehicle outer seat at both front and rear ends of the sewing bag portion,
The longitudinal suture portion is
A seam stitching specification that overlaps and sews the edge seam allowance part and the vehicle inner seam allowance part or the vehicle outer seam allowance part so as to match the surfaces on the inner peripheral surface side of the airbag,
Overlapping seam specifications that sew the end edge seam allowance part and the vehicle inner seam allowance part or the vehicle outer seam allowance part in a vehicle interior / exterior direction,
Of at least one of the two types of
The inner tube includes a front edge of the insertion port portion, a rear edge of the insertion port portion, and an upper edge of the outflow port portion at the time of suturing the partition stitching portion located at the outer peripheral edge of the connection port portion. A head-protecting airbag, wherein the head-protecting airbag is attached to the connection port portion as a co-sewn portion to be sewn together . A deployment expansion portion that expands and expands from the upper edge side of the side window inside the vehicle that is folded and stored so as to cover the inside of the vehicle side window when the inflation gas flows in, and the deployment expansion portion An air bag having a cylindrical connection port connected to an inflator for supplying the inflation gas so that the inflation gas can flow into the deployment and inflation portion The body,
A cylindrical inner tube that is disposed between the inner peripheral surface of the connection port and the outer peripheral surface of the inflator, and guides the inflation gas from the inflator to the deployment and inflation portion of the airbag body;
A method of manufacturing a head protection airbag comprising:
A compartment stitching portion formed by stitching an inner seat located on the inner side of the vehicle at the time of inflation and an outer seat located on the outer side of at least the connection port portion of the airbag body, and the compartment stitching portion A gas introducing portion surrounded by a gas introducing portion capable of introducing the inflation gas, and a sewing bag portion comprising:
The inner tube is
While having a cylindrical shape provided with an insertion port portion that is arranged on the upper end side and into which the inflator is inserted, and an outlet port portion that is connected to the lower end side of the insertion port portion and can flow out the expansion gas,
The outlet portion is branched to the front and rear sides at the lower end of the insertion port portion, a front outlet portion capable of flowing the expansion gas forward, and a rear outlet portion capable of flowing the expansion gas backward. And further comprising:
The outlet for the outer peripheral edge formed of a flexible tube sheet, the tube sheet being folded at the front edge side of the insertion port, and folded in two. And a portion that is the upper edge side of the outlet portion in the area of the rear outlet portion from the rear edge side of the insertion opening portion to the upper edge side of the area of the rear outlet portion. ,
The airbag body is
The sewn bag portion, and a bag weave bag portion which is disposed in the area of the deployed inflatable portion and is formed by bag weaving and communicated with the sewn bag portion, and
The sewing bag portion and the bag woven bag portion are arranged side by side along the front-rear direction, and formed by stitching and connecting the bag woven bag portion and the sewing bag portion,
The bag woven bag portion is
A gas inflow part capable of inflating the inflating gas from the connection port part through the gas introducing part of the sewing bag part to separate the inboard side wall part and the outboard side wall part in the inward and outward direction of the car; A peripheral portion that is disposed so as to combine the vehicle inner side wall portion and the vehicle outer side wall portion and defines a peripheral edge of the gas inflow portion;
The connecting edge with the sewing bag part side in the bag woven bag part,
Continuing to the vehicle inner wall portion and the vehicle outer wall portion of the gas inflow portion, respectively, facing from the upper edge to the lower edge of the bag weave bag portion in the vehicle outer direction, and between the vehicle inner side and the vehicle outer side. It is composed of a belt-like inner seam margin and an outer seam margin that are separated from each other,
The joint edge with the bag woven bag part side in the sewing bag part,
From the upper edge to the lower edge of the sewing bag portion, the vehicle inner seat and the vehicle outer seat are configured as an edge sewing margin portion that is separated from each other in the vehicle interior and exterior directions,
The edge seam allowance part of the vehicle interior sheet of the sewing bag part and the car interior seam allowance part of the bag weave bag part, and the edge seam allowance part of the vehicle exterior sheet of the sewing bag part And the mutual bag margin portion of the bag weave bag portion,
Each joined by a vertical stitching portion that stitches along the vertical direction; and
The section stitching portion of the sewing bag portion is
The peripheral portion of the peripheral portion of the gas inflow portion of the bag woven bag portion is communicated with the gas introduction portion and the portion of the gas inflow portion of the bag woven bag portion corresponding to the gas introduction portion. On the other hand, by providing a lateral stitching portion that stitches the vehicle inner seat, the vehicle outer seat, and the bag weave bag portion of the sewing bag portion along a substantially front-rear direction, and connected,
As a structure to be formed,
The sewing bag portion is disposed between the two bag woven bag portions,
The vertical stitching portions are arranged at four locations corresponding to the edge stitch margins of the vehicle inner seat and the vehicle outer seat at both front and rear ends of the sewing bag portion,
The longitudinal suture portion is
A seam stitching specification that overlaps and sews the edge seam allowance part and the vehicle inner seam allowance part or the vehicle outer seam allowance part so as to match the surfaces on the inner peripheral surface side of the airbag,
Overlapping seam specifications that sew the end edge seam allowance part and the vehicle inner seam allowance part or the vehicle outer seam allowance part in a vehicle interior / exterior direction,
Of at least one of the two types of
The inner tube is
In the state where the stitching portion is provided at the lower edge side portion of the outlet portion in the tube sheet folded in half and is partially formed in a cylindrical shape, the inner seat and the vehicle seat are formed when the sewing bag portion is formed. Between the vehicle outer seat and
At the time of suturing the partition stitching portion located at the outer peripheral edge of the connection port portion, the front edge of the insertion port portion, the rear edge of the insertion port portion and the upper edge of the outflow port portion as a common stitching portion Co-sewn,
A method for manufacturing a head protection airbag , wherein the head protection airbag is formed in a cylindrical shape and attached to the connection port .

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