KR20140014803A - Curtain airbag apparatus and method for manufacturing thereof - Google Patents

Abstract

A curtain airbag apparatus and a manufacturing method for the same to improve the strength of a diffuser pocket, which distributes gas generated from an inflator to an airbag cushion, are disclosed. According to an embodiment of the present invention, the curtain airbag apparatus comprises the airbag cushion which is expanded with the gas; the inflator which generates the gas; and the diffuser pocket which is placed in the airbag cushion and connected to the inflator to distribute the gas generated from the inflator to the airbag cushion. The diffuser pocket includes an outer pocket which has a distributing path for discharging the gas to the airbag cushion; and an inner pocket which is installed in the outer pocket and has the inflator inside to supply the gas generated from the inflator to the distributing path.

Description

Curtain airbag device and its manufacturing method {CURTAIN AIRBAG APPARATUS AND METHOD FOR MANUFACTURING THEREOF}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curtain airbag device and a method of manufacturing the same, and more particularly, to a curtain airbag device having a diffuser pocket for distributing gas generated from an inflator into an airbag cushion and a method for manufacturing the same.

In general, the vehicle is provided with an airbag device that is a safety device to protect the occupants by inflating the airbag cushion inflating the gas in the event of an accident.

Such an airbag device is installed in each part of the vehicle as needed, and the driver's seat airbag device mounted on the steering wheel to protect the driver sitting in the driver's seat, and the glove box mounted above the glove box to protect the passenger sitting in the passenger's seat. A passenger seat airbag device and a curtain airbag device mounted on the side of the vehicle for protecting the head of the driver or passenger have been proposed.

In particular, the curtain airbag device is mounted in the front and rear directions of the vehicle, inside the apilah and the cipilar disposed above the front door and the rear door of the passenger.

The curtain airbag device is an inflator, which is an inflator, and when the gas generated from the inflator flows in, covering the glass of the door like a curtain from the upper side of the front door and the rear door, and expanding the passenger head, the front door, and the rear. Disposed between the door and the airbag cushion to protect the passenger's head during side impact of the vehicle.

The inflator is installed at the front upper end of the airbag cushion, is installed at the rear upper end of the airbag cushion, or is installed at the center upper end of the airbag cushion.

When the inflator is installed at the front upper end of the airbag cushion, the gas generated from the inflator is ejected toward the rear in the airbag cushion, and when the inflator is installed at the rear upper end of the airbag cushion, the gas generated from the inflator Is ejected toward the front in the airbag cushion, thereby gradually inflating the airbag cushion.

However, when the inflator is installed at the upper center of the airbag cushion, the gas generated from the inflator must be ejected in both directions toward the front and rear in the airbag cushion, so that the gas generated from the inflator is forward and backward in the airbag cushion. Dispensing diffuser pockets must be installed.

That is, the diffuser pocket is disposed in the airbag cushion while being coupled to the inflator, thereby distributing gas generated from the inflator to the front and rear of the airbag cushion.

However, since the inflator generates gas due to the explosion of the gas generating medium included therein, the gas ejected from the inflator to the diffuser pocket is not only at high temperature and high pressure, but the diffuser pocket is formed of a flexible material. Since the diffuser pocket is deformed by the high temperature and high pressure gas ejected from the inflator, or the stitched part is broken, the diffuser pocket may not properly distribute the gas into the airbag cushion.

It is an object of the present invention to provide a curtain airbag device having a rigidity of a diffuser pocket for distributing gas generated from an inflator into an airbag cushion, and a method of manufacturing the same.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the curtain airbag device according to an embodiment of the present invention, the airbag cushion is expanded and deployed when the gas is introduced, the inflator for generating the gas, disposed in the airbag cushion, coupled to the inflator And a diffuser pocket for distributing the gas generated by the inflator into the airbag cushion, wherein the diffuser pocket includes an outer pocket having a distribution passage for discharging the gas into the airbag cushion, and an inside of the outer pocket. The inflator is inserted into and disposed therein, and includes an inner pocket for delivering the gas generated by the inflator to the distribution channel.

In addition, the manufacturing method of the curtain airbag apparatus according to the first embodiment of the present invention, the outer pocket is folded and folded based on the first folded portion, and then combined with the upper end to form the first coupling portion, the lower end by combining A third step of forming the coupling part so that the first folded part is located at the front and the first inflator coupling part is coupled to the inflator at the rear, thereby completing the outer pocket; After folding and folding as a reference, the front is coupled to form a second coupling part, so that the second folded part is located on the upper side, and the second inflator coupling part which is coupled to the inflator is located at the rear, thereby completing the second internal pocket. And the first folding part by inserting the inner pocket completed in the second step from the rear of the outer pocket completed in the first step. Arrange a second coupling portion correspondingly, and correspondingly arrange the first coupling portion and the second folding portion, and correspondingly arrange the first inflator coupling portion and the second inflator coupling portion, and then combine the outer pocket and the inner pocket. And forming a distribution passage for ejecting the gas generated by the inflator into the airbag cushion at a lower portion of the outer pocket, and placing the inflator so that at least a portion of the inflator is disposed inside the inner pocket. And inserting into the inflator coupling part and disposing the outer and inner pockets in the airbag cushion.

In addition, the manufacturing method of the curtain airbag apparatus according to the second embodiment of the present invention, the outer pocket is folded and folded on the basis of the first folded portion, and then combined with the front to form a first coupling portion, the lower end by combining 3 forming a coupling portion, the first folded portion is located on the upper side, the first inflator coupling portion to be coupled to the inflator is located in the rear, the first step to complete the outer pocket, the inner pocket unfolds and the second folded portion After folding and folding as a reference, the upper side is coupled to form a second coupling part, so that the second folded part is located at the front and the second inflator coupling part is coupled to the inflator at the rear, thereby completing the second pocket. And the first folding part by inserting the inner pocket completed in the second step from the rear of the outer pocket completed in the first step. Arrange a second coupling portion correspondingly, and correspondingly arrange the first coupling portion and the second folding portion, and correspondingly arrange the first inflator coupling portion and the second inflator coupling portion, and then combine the outer pocket and the inner pocket. And forming a distribution passage for ejecting the gas generated by the inflator into the airbag cushion at a lower portion of the outer pocket, and placing the inflator so that at least a portion of the inflator is disposed inside the inner pocket. And inserting into the inflator coupling part and disposing the outer and inner pockets in the airbag cushion.

The details of other embodiments are included in the detailed description and drawings.

The curtain airbag device and the curtain airbag device manufactured according to the method of the present invention, the diffuser pocket for distributing the gas generated from the inflator into the airbag cushion, since the inner pocket and the outer pocket can be formed at least in a dual structure The diffuser pocket may be prevented from being easily deformed or damaged by the gas at a high temperature and high pressure which is ejected from the inflator.

In addition, since the first folded portion formed in the outer pocket and the second engaging portion formed in the inner pocket are disposed correspondingly, even if the second engaging portion is damaged by the gas pressure generated by the inflator, the gas is The first foldable portion prevents leakage to the outside of the diffuser pocket, so that the diffuser pocket can distribute gas into the airbag cushion.

In addition, since the first coupling portion formed in the outer pocket and the second folding portion formed in the inner pocket correspond to each other, the second folding portion is not directly exposed to the gas generated by the inflator. Exposure to the gas may also prevent the first coupling portion from being damaged by the gas at high temperature and high pressure.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a side view showing a vehicle equipped with a curtain airbag device according to a first embodiment of the present invention;
2 is a view showing a state in which the curtain airbag apparatus according to the first embodiment of the present invention is mounted on a vehicle,
3 is a view showing a curtain airbag device according to a first embodiment of the present invention,
4 is a cross-sectional view taken along line AA in Fig. 3,
5a to 5c is a view showing the manufacturing process of the outer pocket shown in FIG.
6a and 6b is a view showing the manufacturing process of the inner pocket shown in FIG.
7a to 7c is a view showing the manufacturing process of the outer pocket of the curtain airbag apparatus according to a second embodiment of the present invention,
8A and 8B are views illustrating a manufacturing process of the inner pocket of the curtain airbag apparatus according to the second embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, a curtain airbag device and a method of manufacturing the same according to embodiments of the present invention will be described with reference to the drawings.

1 is a side view showing a vehicle equipped with a curtain airbag apparatus according to a first embodiment of the present invention.

Referring to Figure 1, the vehicle 1 is equipped with a curtain airbag device according to an embodiment of the present invention, a passenger (refers to both the driver and passenger. Hereinafter, the passenger is described as a passenger for understanding) Lowering front door 2 and rear door 3 are provided. An A pillar 4 is disposed on the upper side of the front door 2 and a C pillar 5 is disposed on the upper side of the rear door 3.

2 is a view showing a state in which the curtain airbag apparatus according to the first embodiment of the present invention mounted on the vehicle, Figure 3 is a view showing the curtain airbag apparatus according to the first embodiment of the present invention, Figure 4 is It is sectional drawing along the AA line.

1 to 4, the curtain airbag apparatus 100 according to the first embodiment of the present invention includes a side inner panel 6 disposed below the apilar 4 and the pillar 5; Long) in the front-rear direction.

Curtain airbag device 100, the inflator 20 for generating a gas, the airbag cushion connected to the inflator 20 when the gas generated from the inflator 20 is inflated and deployed to protect the head of the passenger ( 10).

The inflator 20 is coupled to the vehicle body 6 via a clamp 22.

A gas inlet 12 connected to the inflator 20 is formed at an upper center portion of the airbag cushion 10 to allow the gas generated from the inflator 20 to flow therein.

In addition, a plurality of cushion tabs 14 coupled to the vehicle body 6 are formed along the length of the airbag cushion 10.

After the airbag cushion 10 is folded and enclosed in the cushion cover 30, the gas inlet part 12 exits the outside of the cushion cover 30 to be connected to the inflator 20, and the cushion tab 14 is cushioned. Out of the cover 30 is mounted through the fastening member 7 to the vehicle body (6).

Also, a strap 16 coupled to the vehicle body 6 is disposed at the front end of the airbag cushion 10. The strap 16 supports the airbag cushion 10 so that the airbag cushion 10 can be deployed without sagging backwards when the airbag cushion 10 is inflated and deployed.

The airbag cushion 10 is enclosed in the cushion cover 30 and mounted to the vehicle body 6, so that the cushion cover 30 must be broken in order for the airbag cushion 10 to be inflated and deployed into the cabin. Therefore, a tear line (not shown) is formed in the cushion cover 30 that is broken by the inflating force of the airbag cushion 10.

On the other hand, the inflator 20 is connected to the gas inlet 12 is disposed in the center of the airbag cushion 10, the gas generated from the inflator 20 is initially introduced into the center portion in the airbag cushion 10 In order to flow forward and backward, the airbag cushion 10 may be normally developed without being biased to one side.

Accordingly, a diffuser pocket 40 is disposed inside the airbag cushion 10 to distribute the gas generated from the inflator 20 back and forth within the airbag cushion 10. The diffuser pocket 40 has an upper rear end connected to the inflator 20 so that gas is introduced into the inflator 20, and the introduced gas is ejected into the airbag cushion 10 through the distribution channel 44a, thereby causing an airbag. It flows back and forth in the cushion 10.

However, the inflator 20 generates gas due to the explosion of the gas generating medium filled therein, and the gas introduced into the diffuser pocket 40 from the inflator 20 is at a high temperature and high pressure. Therefore, if the diffuser pocket 40 is deformed or damaged by the gas of high temperature and high pressure flowing from the inflator 20, the diffuser pocket 40 may not normally perform the gas distribution function into the airbag cushion 10. Therefore, in order to prevent this, the diffuser pocket 40 of the curtain airbag device according to an embodiment of the present invention, the inner pocket 42 and the inner pocket 42 to receive the initial gas by wrapping the inflator 20 therein The outer pocket 44 is formed to surround the inner pocket 42 so as to receive gas from the inner pocket 42 and to discharge the gas into the airbag cushion 10.

The inner pocket 42 and the outer pocket 44 may be formed of a material having flexibility, and in this embodiment, is formed of the same material as the airbag cushion 10. For example, the inner pocket 42 and the outer pocket 44 may be formed by coating silicon on the fabric to withstand the temperature of the gas flowing from the inflator 20.

In addition, the inner pocket 42 and the outer pocket 44 may be formed in multiple layers, respectively, to withstand the pressure of the gas flowing from the inflator 20. However, in this embodiment, the inner pocket 42 and the outer pocket 44 will be described as being formed in one layer each.

At the rear end of the outer pocket 44, the first inflator coupling portion 44b coupled to the inflator 20 is formed to protrude rearward, and the inner pocket 42 is formed at the rear end corresponding to the first inflator coupling portion 44b. The second inflator coupling portion 42b disposed inside the first inflator coupling portion 44b and coupled to the inflator 20 is protruded to the rear.

The first inflator coupling portion 44b and the second inflator coupling portion 42b are disposed in the rear end of the gas inflow portion 12 formed in the airbag cushion 10, and the inflator (42) is formed inside the second inflator coupling portion 42b. After the 20 is inserted, the gas inlet 12, the first inflator coupling portion 44b, the second inflator coupling portion 42b and the inflator 20 may be coupled to each other through a clamp (not shown).

At least a portion of the inflator 20 is inserted into the inner pocket 42 from the rear, and the inner pocket 42 delivers the gas generated by the inflator 20 to the distribution passage 44a.

The inner pocket 42 is disposed above the outer pocket 44 so that the distribution passage 44a can be formed under the outer pocket 44, and the lower side is opened to open the gas generated by the inflator 20. Transfer to distribution channel 44a.

The distribution passage 44a is formed by the front and rear ends of the outer pocket 44 communicating with each other, and receives the gas in the inner pocket 42 and distributes it in the front and rear directions in the airbag cushion 10. In this embodiment, the distribution channel 44a is formed parallel to the front and rear directions. However, the distribution flow path 44a does not necessarily need to be formed parallel to the front-back direction. That is, it may be inclined in the front-rear direction depending on the shape of the gas chamber (chamber) of the airbag cushion 10.

The outer pocket 44 is folded and folded on the basis of the first folded portion 44c positioned forward from the inflator 20, and the upper side is sewn into the upper side from the inflator 20 to form a first coupling portion 44d. do.

The inner pocket 42 is folded and folded based on the second folded portion 42d positioned on the upper side corresponding to the first engaging portion 44d, and the front portion corresponding to the first folded portion 44c is stitched together. As a result, the second coupling part 42c is formed.

In this way, since the first folded portion 44c formed in the outer pocket 44 and the second engaging portion 42c formed in the inner pocket 42 correspond to each other, the gas pressure generated by the inflator 20 Even if the second engagement portion 42c is damaged by the second coupling portion 42c, the gas is not leaked to the outside of the diffuser pocket 40 by the first folded portion 44c, so that the diffuser pocket 40 is airbag cushion 10. Gas distribution can be carried out into.

In addition, since the first engaging portion 44d formed on the outer pocket 44 and the second folded portion 42d formed on the inner pocket 42 are disposed to correspond, the first engaging portion 44d is the inflator 20. The second folded portion 42d is exposed to the gas without being directly exposed to the gas generated by the cross-section, thereby preventing the first coupling portion 44d from being damaged by the gas at high temperature and high pressure.

The outer pocket 44 is stitched to the lower end so that the inner pocket 42 is disposed therein, the third coupling portion 44e is further formed.

Looking at the manufacturing process of the curtain airbag apparatus according to the first embodiment of the present invention configured as described above are as follows.

5A to 5C are views illustrating a manufacturing process of the external pocket shown in FIG. 3.

First, referring to FIGS. 5A to 5C, in the first step, the outer pocket 44 is unfolded and folded based on the first folded portion 44c, and then the upper end is joined by sewing to the first coupling portion 44d. ) And the lower end is stitched to form a third coupling portion 44e, so that the first folded portion 44c is positioned in front of the first inflator coupling portion 44b which is coupled to the inflator 20. The outer pocket 44 is completed by being located rearward.

In the first step, as shown in FIG. 5B, the first coupling part 44e is first formed, and then the inner and outer sides of the outer pocket 44 are inverted to each other so that the first coupling part (as shown in FIG. 5C). 44d).

6A and 6B are views illustrating a manufacturing process of the inner pocket illustrated in FIG. 3.

6 and 6B, in the second step, the inner pocket 42 is unfolded and folded based on the second folded portion 42d, and then the front coupling is stitched to the second coupling portion 42c. ) So that the second folded portion 42d is positioned at the upper side, and the second inflator engaging portion 42d coupled with the inflator 20 is positioned at the rear, thereby completing the inner pocket 42.

3, in the third step, the inner pocket 42 completed in the second step is inserted from the rear of the outer pocket 44 completed in the first step, and thus the first folding is completed. The portion 44c and the second coupling portion 42c are disposed correspondingly, the first coupling portion 44d and the second folding portion 42d are correspondingly arranged, and the first inflator coupling portion 44b and the second After arranging the inflator coupling portion 42b correspondingly, the rear ends of the outer pocket 44 and the inner pocket 42 are stitched together to form the inflator 20 under the outer pocket 44. The distribution flow path 44a which blows gas into the airbag cushion 10 is formed.

In the third step, the inner pocket 42 is inserted into the upper portion of the outer pocket 44 so that the distribution channel 44a can be formed under the outer pocket 44, and the lower side is opened so that the distribution channel 44a can be formed. To deliver the gas.

Subsequently, in the fourth step, the inflator 20 is inserted into the second inflator coupling part 42b so that at least a part of the inflator 20 is disposed inside the inner pocket 42, and the outer pocket 44 and the inner pocket. After placing 42 in the airbag cushion 10, the airbag cushion 10, the inflator 20, and the diffuser pocket 40 are coupled through a clamp (not shown), thereby providing a The curtain airbag device is completed.

However, the diffuser pocket 40 of the curtain airbag apparatus according to the first embodiment of the present invention as described above, the outer pocket 44 is folded and folded on the basis of the first folded portion (44c) located in front of the inflator. The upper side is stitched together from the inflator 20 to form a first coupling portion 44d, and the inner pocket 42 has a second folded portion 42d positioned at an upper side corresponding to the first coupling portion 44d. Folded and folded as a reference, the front portion corresponding to the first folded portion 44c is stitched to form a second coupling portion 42c, but it is not necessary to form the structure.

That is, even when formed in the structure shown in FIGS. 7A to 8B below, the first coupling portion 44d and the second folding portion 42d may be disposed at positions corresponding to each other, and the first folding portion ( 44c and the second coupling part 42c may be disposed at positions corresponding to each other. In this case, the outer pocket 44 is folded and folded on the basis of the first folded portion 44c positioned upward from the inflator 20, and the front coupling is stitched from the inflator 20 to the first coupling portion 44d. ) Is formed, the inner pocket 42 is folded on the basis of the second folded portion (42d) located in the front corresponding to the first engaging portion (44d) and folded, and corresponding to the first folded portion (44c) The upper side is stitched to form a second coupling portion 42c. As such, the manufacturing process of the curtain airbag device according to the second embodiment of the present invention will be described in detail below.

7A to 7C are views illustrating a manufacturing process of the outer pocket of the curtain airbag apparatus according to the second embodiment of the present invention. FIGS. 8A and 8B are views illustrating an inner pocket of the curtain airbag apparatus according to the second embodiment of the present invention. The drawing shows the manufacturing process. Here, the same reference numerals will be used to describe the same parts as those of the first embodiment described above.

First, referring to FIGS. 7A to 7C, in the first step, the outer pocket 44 is unfolded and folded based on the first folded portion 44c, and then the front coupling is stitched to the first coupling portion 44d. ) And the lower end is stitched to form a third coupling portion 44e, so that the first folded portion 44c is positioned on the upper side, and the first inflator coupling portion 44b coupled to the inflator 20 is formed. The outer pocket 44 is completed by being located rearward.

In the first step, as shown in FIG. 7B, the first coupling part 44e is first formed, and then the inner and outer sides of the outer pocket 44 are inverted to each other so that the first coupling part ( 44d).

Subsequently, referring to FIGS. 8A and 8B, in the second step, the inner pocket 42 is unfolded and folded based on the second folded portion 42d, and then the upper side is stitched to join the second coupling portion 42c. ) So that the second folded portion 42d is positioned at the front, and the second inflator engaging portion 42b coupled with the inflator 20 is positioned at the rear, thereby completing the inner pocket 42.

The subsequent steps are the same as in the first embodiment described above. That is, in the third step, the inner pocket 42 completed in the second step is inserted from the rear of the outer pocket 44 completed in the first step, so that the first folded portion 44c and the second Arrange the coupling portion 42c correspondingly, and arrange the first coupling portion 44d and the second folded portion 42d correspondingly, and arrange the first inflator coupling portion 44b and the second inflator coupling portion 42b. After the corresponding arrangement, the rear ends of the outer pocket 44 and the inner pocket 42 are stitched together to form a gas generated by the inflator 20 in the lower portion of the outer pocket 44. The distribution flow path 44a which blows in inward is formed.

In the third step, the inner pocket 42 is inserted into the upper portion of the outer pocket 44 so that the distribution channel 44a can be formed under the outer pocket 44, and the lower side is opened so that the distribution channel 44a can be formed. To deliver the gas.

Subsequently, in the fourth step, the inflator 20 is inserted into the second inflator coupling part 42b so that at least a part of the inflator 20 is disposed inside the inner pocket 42, and the outer pocket 44 and the inner pocket. After placing 42 in the airbag cushion 10, the airbag cushion 10, the inflator 20, and the diffuser pocket 40 are coupled through a clamp (not shown), whereby the second embodiment of the present invention The curtain airbag device is completed.

As described above, the curtain airbag device and the curtain airbag device manufactured according to the manufacturing method according to the present invention, the diffuser pocket 40 for distributing the gas generated from the inflator 20 into the airbag cushion 10, the inner pocket Since the 42 and the outer pocket 44 can be formed at least in a double structure, the diffuser pocket 40 can be prevented from being easily deformed or broken by the gas in the high temperature and high pressure state ejected from the inflator 20. Can be.

In addition, since the first folded portion 44c formed in the outer pocket 44 and the second engaging portion 42c formed in the inner pocket 42 are disposed to correspond, the gas pressure generated by the inflator 20 is generated. Even if the second engagement portion 42c is broken, the gas is not leaked to the outside of the diffuser pocket 40 by the first folded portion 44c, so that the diffuser pocket 40 enters the airbag cushion 10. Gas distribution can be achieved.

In addition, since the first engaging portion 44d formed on the outer pocket 44 and the second folded portion 42d formed on the inner pocket 42 are disposed to correspond, the first engaging portion 44d is the inflator 20. The second folded portion 42d is exposed to the gas without being directly exposed to the gas generated by the cross-section, thereby preventing the first coupling portion 44d from being damaged by the gas at high temperature and high pressure.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

10: airbag cushion 20: inflator
40: diffuser pocket 42: internal pocket
42b: second inflator coupling portion 42c: second coupling portion
42d: second folded portion 44: outer pocket
44a: distribution channel 44b: first inflator coupling portion
44c: first folded portion 44d: first engaging portion
44e: third coupling part

Claims (13)

An airbag cushion inflated and deployed when gas is introduced;
An inflator for generating the gas; And
A diffuser pocket disposed in the airbag cushion and coupled to the inflator to distribute the gas generated by the inflator into the airbag cushion.
The diffuser pocket,
An outer pocket having a distribution passage for ejecting the gas into the airbag cushion;
And an inner pocket disposed inside the outer pocket, the inflator inserted therein, and delivering the gas generated by the inflator to the distribution channel. The method according to claim 1,
The inner pocket is disposed on the upper portion of the outer pocket so that the distribution channel is formed in the lower portion of the outer pocket, the lower side is open air curtain device for delivering the gas to the distribution channel. The method according to claim 1,
The inflator is inserted and disposed behind the inner pocket,
The outer pocket is folded and folded on the basis of the first folded portion located forward from the inflator, the upper side is coupled from the inflator to form a first coupling portion,
The inner pocket is folded on the basis of the second folded portion located on the upper side corresponding to the first coupling portion is folded, the curtain airbag device is coupled to the front corresponding to the first folded portion to form a second coupling portion. The method according to claim 1,
The inflator is inserted and disposed behind the inner pocket,
The outer pocket is folded and folded on the basis of the first folded portion located above the inflator, the front is coupled from the inflator to form a first coupling portion,
The inner pocket is folded and folded on the basis of a second folded portion located in front of the first coupling portion, and the upper side corresponding to the first folding portion is coupled to the curtain airbag device is formed. The method according to claim 3 or 4,
The outer pocket is a curtain airbag device is coupled to the lower end so that the inner pocket is disposed therein is further formed with a third coupling portion. The method according to claim 1,
And the distribution channel is formed such that the front and rear ends of the outer pocket communicate with each other to distribute the gas before and after the airbag cushion. The method according to claim 1,
The rear end of the outer pocket is formed with a protruding first inflator coupling portion coupled to the inflator,
Curtain rear airbag device is formed in the rear end of the inner pocket protrudes the second inflator coupling portion disposed in the first inflator coupling portion coupled to the inflator. The outer pocket is opened and folded based on the first folded part, and then the upper part is joined to form a first joining part, and the lower part is joined to form a third joining part, so that the first folded part is located at the front and is combined with the inflator. A first step of completing the outer pocket by allowing the first inflator coupler to be positioned rearward;
Unfold the inner pocket and fold it on the basis of the second folded part, and combine the front to form a second coupling part, so that the second folded part is located at the upper side, and the second inflator coupling part is coupled to the inflator at the rear. A second step of completing the inner pocket;
Inserting the inner pocket completed in the second step from the rear of the outer pocket completed in the first step, the first folded portion and the second coupling portion correspondingly disposed, the first coupling portion and the first coupling portion 2 fold portions correspondingly arranged, the first inflator coupling portion and the second inflator coupling portion correspondingly arranged, and then the outer pocket and the inner pocket are coupled to each other to form a gas generated by the inflator under the outer pocket. A third step of forming a distribution passage for ejecting into the cushion; And
A fourth step of inserting the inflator into the second inflator coupling portion so that at least a portion of the inflator is disposed inside the inner pocket, and disposing the outer pocket and the inner pocket in an airbag cushion; Way. The method according to claim 8,
In the third step, the inner air pocket is inserted into the upper portion of the outer pocket, the lower side is opened so that the distribution channel can be formed under the outer pocket, the curtain airbag device for delivering the gas to the distribution channel Manufacturing method. The method according to claim 8,
In the first step, after forming the third coupling portion, the inner and outer sides of the outer pocket to turn over each other to form the first coupling portion curtain airbag device manufacturing method. The outer pocket is opened and folded based on the first folded part, and then the front is joined to form the first coupling part, and the lower part is joined to form the third coupling part, so that the first folded part is located on the upper side and is coupled to the inflator. A first step of completing the outer pocket by allowing the first inflator coupler to be positioned rearward;
Unfold the inner pocket and fold it on the basis of the second folded part, and then combine the upper side to form a second coupling part, so that the second folded part is located at the front and the second inflator coupling part is coupled to the inflator at the rear. A second step of completing the inner pocket;
Inserting the inner pocket completed in the second step from the rear of the outer pocket completed in the first step, the first folded portion and the second coupling portion correspondingly disposed, the first coupling portion and the first coupling portion 2 fold portions correspondingly arranged, the first inflator coupling portion and the second inflator coupling portion correspondingly arranged, and then the outer pocket and the inner pocket are coupled to each other to form a gas generated by the inflator under the outer pocket. A third step of forming a distribution passage for ejecting into the cushion; And
A fourth step of inserting the inflator into the second inflator coupling portion so that at least a portion of the inflator is disposed inside the inner pocket, and disposing the outer pocket and the inner pocket in an airbag cushion; Way. The method of claim 11,
In the third step, the inner air pocket is inserted into the upper portion of the outer pocket, the lower side is opened so that the distribution channel can be formed under the outer pocket, the curtain airbag device for delivering the gas to the distribution channel Manufacturing method. The method of claim 11,
In the first step, after forming the third coupling portion, the inner and outer sides of the outer pocket to turn over each other to form the first coupling portion curtain airbag device manufacturing method.

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