KR20110058036A - A curtain air-bag apparatus and method for manufacturing of the same - Google Patents

Abstract

PURPOSE: A curtain airbag device and a manufacturing method thereof are provided to uniformly flow gas into an airbag cushion by maintaining the gas outlet hole of a fill hose in a circular shape. CONSTITUTION: A curtain airbag device comprises an inflator(10), an airbag cushion(30), and a fill hose(20). Whe gas flows into the airbag cushion, the airbag cushion is inflated. The fill hose is connected to the inflator and is arranged on the airbag cushion to flow gas generated from the inflator to the airbag cushion. The shape of the fill hose is changed by the gas flowing from the inflator in order to absorb the impact of the gas.

Description

A curtain air-bag apparatus and method for manufacturing of the same

The present invention relates to a curtain airbag device and a method of manufacturing the same, and more particularly, to a curtain airbag device made of a polyhedron in which the shape of the fill hose for discharging the gas generated from the inflator to the airbag cushion can be changed by the gas; It is about a method.

In general, the airbag device is a device for protecting occupants in the vehicle by absorbing the physical shock generated during the collision of the vehicle by using the elasticity of the airbag cushion. Such an airbag device may be classified into a driver's seat airbag device, a passenger seat airbag device, a curtain airbag device, and the like.

The curtain airbag device is installed at the left and right edges of the roof panel in the longitudinal direction of the car, respectively, and when the gas generated from the inflator flows into the airbag cushion while moving the fill hose disposed inside the airbag cushion during an accident of the car, As the air back cushion is inflated and deployed between the door and the passenger, it is a device that protects the passenger's head when the passenger sitting in the front and rear seats is pushed toward the door or the door is crushed inward.

The present invention consists of a polyhedron in which the fill hose may be changed in shape by the gas flowing from the inflator, and the shape of the fill hose absorbs the impact of the gas to prevent breakage of the fill hose and the airbag cushion. When the gas is discharged to the air bag cushion through a plurality of gas outlet outlet formed in the curtain air bag, the width is secured so that the gas outlet outlet can maintain a circular shape, and the gas can be evenly introduced into the air bag cushion, and a manufacturing method thereof. The purpose is to provide.

The present invention for solving the above problems is connected to the inflator for generating a gas, an airbag cushion to expand when the gas flows from the inflator, the gas generated in the inflator can be introduced into the airbag cushion It includes a fill hose disposed in the air bag cushion, the fill hose provides a curtain air bag device made of a polyhedron that can absorb the impact of the gas while the shape is changed by the gas flowing from the inflator.

The present invention also provides a method of forming a plurality of gas outlets for discharging gas through an airbag cushion on a first panel, folding the second panel at least once, and combining the second panel with the first panel to form a polyhedron. It provides a method for manufacturing a curtain airbag device comprising the step of completing the fill hose made, and coupling the completed fill hose to the air bag cushion.

The curtain airbag device and the curtain airbag device manufactured according to the method of the present invention comprises a polyhedron whose shape can be changed by the gas flowing from the inflator, and absorbs the impact of the gas while the shape is changed. In addition to preventing damage to the fill hose and the airbag cushion, and when gas is discharged to the airbag cushion through a plurality of gas outlet outlets formed in the fill hose, the width of the gas hose outlet is maintained so as to maintain a circular shape. Air bag cushion has the effect of evenly flowing gas.

An embodiment of the present invention having the above-described effect will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a curtain airbag device according to an embodiment of the present invention, Figure 2 is a perspective view of the fill hose shown in FIG.

1 and 2, the curtain airbag apparatus according to the embodiment of the present invention includes an inflator 10 generating gas in an automobile accident, and a gas generated from the inflator 10 connected to the inflator 10. The moving fill hose 20 and the fill hose 20 are disposed therein and include an airbag cushion 30 that protects the passenger by expanding and expanding when a gas moving the fill hose 20 flows in.

The airbag cushion 30 is installed at the left and right edges of the roof panel (not shown) in the longitudinal direction of the car, respectively, and when the gas generated from the inflator 10 flows through the fill hose 20 during the car accident, the door and the door are expanded. By deploying between passengers, the passengers sitting in the front and back seats protect the passengers when they are inclined toward the door or the door is crushed inward.

The airbag cushion 30 is provided with a plurality of expansion regions 32, 34, and 36 that expand when gas is introduced.

The plurality of inflation zones 32, 34, and 36 may include a first inflation zone 32 formed in the front portion of the airbag cushion 30 and a second inflation zone 34 formed in the rear portion of the airbag cushion 30. The third expansion zone 36 is formed between the first expansion zone 32 and the second expansion zone 34.

When the airbag cushion 30 is deployed, the first inflation zone 32 faces the side of the passenger in the front seat to protect the passenger in the front seat, and the second inflation zone 34 is the passenger in the back seat. Facing the side of the car to protect the passenger sitting in the back seat.

On the other hand, the fill hose 20 is formed with a plurality of gas outlet outlets (25, 26, 27) for discharging the gas moved from the inflator 10 to the air bag cushion (30). At least one gas discharge port 25, 26, 27 is formed at a position where gas can be discharged into the first expansion region 32, the second expansion region 34, and the third expansion region 36, respectively. That is, the gaseous outlet 25 among the gaseous outlets 25, 26, 27 illustrated in FIG. 2 may communicate with the first expansion region 32 to introduce gas into the first expansion region 32. The 26 may communicate with the third expansion zone 36 to introduce gas into the third expansion zone 36, and the gaseous outlet 27 may communicate with the second expansion zone 34 to allow the gas to flow therein. 34) gas can be introduced.

The gas outlets 25, 26, 27 are formed in a circular shape so as to evenly distribute the gas to the first expansion region 32, the second expansion region 34, and the third expansion region 36.

In addition, the fill hose 20 is made of a polyhedron capable of absorbing the impact of the gas while the shape is changed by the gas flowing from the inflator 10. Detailed description thereof will be described later with reference to FIG. 3.

The fill hose 20 is made of the same material as the air bag cushion 30, and can reduce weight and production cost compared to a fill hose made of a conventional thick woven fabric and a coating layer inside the fabric.

In addition, the fill hose 20 forms a polyhedron together with the first panel 22 having a plurality of gas outlets 25, 26, 27 for discharging gas to the air bag cushion 30, and the first panel 22. And a second panel 24 that is folded at least once and joined to the first panel 22.

The first panel 22 allows a plurality of gas outlets 25, 26, 27 to discharge gas into the first expansion region 32, the second expansion region 34, and the third expansion region 36. A plurality of gas outlets (,,) are disposed at the lower portion so as to communicate with the first expansion region 32, the second expansion region 34, and the third expansion region 36, and the second panel 24 is the first panel. Both sides are coupled to (22) and arranged at the top.

In the present exemplary embodiment, the second panel 24 is folded in half and then combined with the first panel 22 to form three surfaces together with the first panel 22.

In addition, although the first panel 22 and the second panel 24 may be combined by using an adhesive, the first panel 22 and the second panel 24 are illustrated as stitched and combined in the present embodiment.

When the gas flows into the airbag cushion 30 through the plurality of gas outlets 25, 26 and 27, the first panel 22 may maintain the circular shape of the plurality of gas outlets 25, 26 and 27. It consists of a plate body which has the width | variety (B). That is, the fill hose 20 is expanded by the gas introduced from the inflator 10. At this time, since the first panel 22 has a width B, the shapes of the gaseous outlets 25, 26, 27 are shown. The circular shape can be maintained without changing, and the gas is evenly distributed to the first expansion region 32, the second expansion region 34, and the third expansion region 36, so that the first expansion region 32, The airbag cushion 30 may be developed by adjusting the internal pressure of each of the second expansion region 34 and the third expansion region 36 to meet the design criteria.

3 is an explanatory view of the action of the fill hose of the curtain airbag apparatus according to an embodiment of the present invention.

Referring to FIG. 3, when the high pressure gas G generated from the inflator 10 flows into the fill hose 20, the inner wall of the fill hose 20 is the pressure of the gas G as shown in FIG. 3 (a). Will be impacted by. At this time, the gas (G) hits three surfaces of the fill hose 20, and thus the fill hose 20 is changed in shape by the pressure of the gas (G) as shown in FIG. Absorb the shock caused by the pressure of G). That is, in the past, the fill hose 20 has a circular cross section and is coated with a rubber material therein, so that even when the gas flows from the inflator 10 and expands, the fill hose 20 always maintains a circular shape. Not only the fill hose 20 and the airbag cushion 30 were damaged because they could not absorb the shock caused by the high-pressure gas introduced therein, and the shape of the gaseous outlets 25, 26, 27 was crushed when the fill hose 20 was inflated. Although the gas is not evenly distributed to the first expansion zone 32, the second expansion zone 34, and the third expansion zone 36 due to the deformed or elliptical shape, the curtain airbag device according to the embodiment of the present invention has such a problem. Can be solved.

Figure 4 is a view showing the assembly process of the curtain airbag apparatus according to an embodiment of the present invention.

Hereinafter, the manufacturing method of the curtain airbag device according to the embodiment of the present invention will be described in conjunction with the assembly process of the curtain airbag device according to the embodiment of the present invention shown in FIG.

Referring to FIG. 4, first, as shown in FIG. 4A, a plurality of gaseous outlets 25, 26, 27 for discharging gas to the airbag cushion 30 are formed in the first panel 22 (S10). . The gas gas outlets 25, 26, and 27 may be formed at positions where the gas may be discharged to the first expansion region 32, the second expansion region 34, and the third expansion region 36 of the airbag cushion 30. The plurality of gas outlets 25, 26, 27 are formed to be spaced apart from each other so as to be in a position where the gas outlets are located.

Thereafter, as shown in FIG. 4B, the second panel 24 is folded at least once (S20). In FIG. 4B, the second panel 24 is folded in half. Therefore, when the second panel 24 is coupled to the first panel 22, the fill hose 20 is formed to have three surfaces. Of course, if the second panel 24 is folded twice and then coupled to the first panel 22, the fill hose 20 has four sides.

Thereafter, as shown in FIG. 4 (c), the second panel 24 is coupled to the first panel 22 to complete the fill hose 20 made of a polyhedron (S30). In FIG. 4C, the fill hose 20 having three sides is illustrated, and both sides of the first panel 22 are folded and sewn with the second panel 24 as shown in an enlarged view divided by a dotted line. Illustrated as binding.

Thereafter, the completed fill hose 20 is coupled to the airbag cushion 30 to complete the curtain airbag device shown in FIG. 1. The airbag cushion 30 is divided into an integral woven form consisting of a one piece and a sewing type composed of two pieces and sewn together to form an air bag cushion 30. The integral woven airbag cushion 30 In this case, the fill hose 20 is inserted into the air bag cushion 30, and then the fill hose 20 is sewn and combined to the air bag cushion 30, and in the case of the sewing type air bag cushion 30, any one of the two pieces. Sew the fill hose 20 in one piece and combine it first, and then stitch the other piece to any one piece to complete the airbag cushion 30.

Looking at the operation of the curtain airbag apparatus according to an embodiment of the present invention configured as described above are as follows.

First, when gas is generated from the inflator 10 during an automobile accident, the generated high temperature / high pressure gas flows into the fill hose 20 connected to the inflator 10.

At this time, since the gas introduced into the fill hose 20 is a high pressure, the gas is applied to the inner wall of the fill hose 20, and thus, the fill hose 20 made of a polyhedron is changed in shape and impacted by the gas. And gradually expand toward the front end from the rear end connected with the inflator 10.

Thereafter, the gas first flows into the second expansion region 34 of the airbag cushion 30 through the gas outlet 27 near the inflator 10 while moving the fill hose 20, and gradually the gas outlet is gradually discharged. The airbag cushion 30 expands and expands by entering the first expansion region 32 through the third expansion region 36 and the gas outlet 25 through 26.

When the gas is discharged to the airbag cushion 30 through the gas outlets 25, 26 and 27, the first panel 22 has a width B so that the shape of the gas outlets 25, 26, 27 is reduced. The first expansion zone 32 and the first expansion zone 32 and the third expansion zone 36 can be evenly distributed, thereby distributing the gas evenly to the first expansion zone 32, the second expansion zone 34, and the third expansion zone 36. The airbag cushion 30 may be developed by adjusting the internal pressure of each of the second inflation zone 34 and the third inflation zone 36 to meet the design criteria.

As described above, the curtain airbag device and the curtain airbag device manufactured according to the manufacturing method according to the present invention, the fill hose 20 is made of a polyhedron whose shape can be changed by the gas flowing from the inflator 10, the shape This change prevents damage of the fill hose 20 and the airbag cushion 30 by absorbing the impact of the gas, and also through the plurality of gas outlets 25, 26, 27 formed in the fill hose 20. When the gas is discharged to the cushion 30, the width B is secured so that the gaseous outlets 25, 26, 27 can maintain a circular shape, thereby allowing the gas to flow into the airbag cushion 30 evenly.

In the above, the preferred embodiment of the present invention has been shown and described, but the present invention is not limited to the specific embodiments described above, but in the technical field to which the present invention pertains without departing from the spirit of the invention as claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

1 is a cross-sectional view of a curtain airbag device according to an embodiment of the present invention,

2 is a perspective view of the fill hose shown in FIG.

3 is an explanatory view of the action of the fill hose of the curtain airbag device according to an embodiment of the present invention,

Figure 4 is a view showing the assembly process of the curtain airbag apparatus according to an embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

10: Inflator 20: Fillhose

22: first panel 24: second panel

25,26,27: Gusto Exit 30: Airbag Cushion

32: first expansion zone 34: second expansion zone

36: third expansion zone

Claims (8)

An inflator for generating a gas; An airbag cushion that expands when gas is introduced from the inflator; And And a fill hose disposed in the airbag cushion in connection with the inflator so that the gas generated in the inflator can flow into the airbag cushion. The fill hose is a curtain airbag device made of a polyhedron that can absorb the impact of the gas while the shape is changed by the gas flowing from the inflator. The method according to claim 1, wherein the fill hose, A first panel having a plurality of gaseous outlets for discharging gas to the airbag cushion; And a second panel that is folded at least once and joined to the first panel to form the polyhedron with the first panel. The method according to claim 2, The first panel is a curtain airbag device made of a plate body having a width so that when the gas flows into the airbag cushion through the plurality of gas outlets to maintain a circular shape. The method according to claim 2, And the second panel is folded in half and then combined with the first panel to form three sides with the first panel. The method according to claim 2, And the first panel and the second panel are stitched and joined. Forming a plurality of gas outlets for discharging gas to the first panel through the air bag cushion; Folding the second panel at least once; Combining the second panel with the first panel to complete a fill hose made of a polyhedron; And And coupling the completed fill hose to the air bag cushion. The method according to claim 6, And in the step of folding the second panel at least once, folding the second panel in half. The method according to claim 6, The first panel and the second panel is a method of manufacturing a curtain airbag device is stitched and joined.

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