KR20110024928A

KR20110024928A - A curtain air-bag

Info

Publication number: KR20110024928A
Application number: KR1020090083120A
Authority: KR
Inventors: 홍예리
Original assignee: 현대모비스 주식회사
Priority date: 2009-09-03
Filing date: 2009-09-03
Publication date: 2011-03-09

Abstract

The present invention relates to a curtain airbag, by providing a flow path in the fill hose so as to secure the amount of gas flowing into the front portion of the airbag cushion, it provides an advantage that can fully deploy the front portion of the airbag cushion.

To this end, the present invention is an airbag cushion that is deployed between the door and the occupant when the gas flows, a fill hose which is disposed on the air bag cushion and the gas generated from the inflator flows, and formed in the fill hose flows the fill hose A plurality of gaseous outlets for discharging the gas to the airbag cushion, and the fill hose includes a main flow path through which gas flows to the plurality of gaseous outlets, and at least one gas formed far from the inflator among the plurality of gaseous outlets. Provided is a curtain air bag in which an auxiliary flow path through which gas flows to the discharge port is formed.

Curtain air bag, air bag cushion, fill hose, gusto outlet, main flow passage, auxiliary flow passage

Description

Curtain air-bag {A curtain air-bag}

The present invention relates to a curtain airbag, and more particularly, to a curtain airbag having a flow path formed in the fill hose so as to secure the amount of gas flowing into the front portion of the airbag cushion.

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

These airbags are installed in each part of the vehicle as necessary, the driver's seat airbag mounted on the steering wheel to protect the driver sitting in the driver's seat, and the passenger seat airbag mounted on the upper side of the glove box to protect the passenger sitting in the passenger seat. In order to protect the side of the occupant has been proposed curtain airbag and the like mounted along the roof rail.

These airbags are caused by the explosion of the gas generating medium contained in the inflator during the vehicle collision flows through the fill hose disposed in the airbag cushion flows into the airbag cushion through the gas discharge port, thereby expanding the airbag cushion It is deployed to protect the occupants.

SUMMARY OF THE INVENTION An object of the present invention is to provide a curtain airbag capable of fully deploying the front portion of the airbag cushion by securing an amount of gas flowing into the front portion of the airbag cushion.

The present invention for solving the above problems is an airbag cushion that is deployed between the door and the occupant when the gas flows, a fill hose which is disposed in the air bag cushion and flows from the inflator, and formed in the fill hose And a plurality of gaseous outlets for discharging the gas flowing through the fill hose to the air bag cushion, wherein the fille hose includes a main flow path through which gas flows to the plurality of gaseous outlets, and a plurality of gaseous outlets, which are formed far from the inflator. A curtain air bag having an auxiliary flow path through which gas flows to at least one gas outlet is provided.

Curtain air bag according to the present invention has a main flow path for the gas flow to the plurality of gas outlets in the fill hose, and an auxiliary flow path for the gas flow to at least one gas outlet outlet formed far from the inflator of the plurality of gas outlets is formed, By securing the amount of gas flowing into the front portion of the cushion, there is an effect that can fully deploy the front portion of the airbag cushion.

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 showing a curtain airbag according to a first embodiment of the present invention, Figure 2 is a cross-sectional view showing only the fill hose as a cross-sectional view along the line AA of Figure 1, Figure 3 is a section A divided by a dotted line in Figure 1 It is an enlarged view.

1 to 3, the curtain airbag according to the first embodiment of the present invention includes an inflator 10 generating gas and an airbag cushion deployed between the door and the occupant when gas is introduced from the inflator 10. 20 and the fill hose 30 which is inserted into the airbag cushion 20 and connected to the inflator 10 so that gas generated from the inflator 10 may flow into the airbag cushion 20. It includes.

The fill hose 30 has a plurality of gaseous outlets 31a, 31b, 31c, 32a for discharging the gas to the airbag cushion 20 so that the gas flowing through the fill hose 30 can flow into the airbag cushion 20. 33a, 33b are formed.

In addition, the fill hose 30 has a main flow path 34 through which gas flows to the plurality of gas outlets 31a, 31b, 31c, 32a, 33a, 33b, a plurality of gaseous outlets 31a, 31b, 31c, 32a, Auxiliary flow paths 35 through which gas flows are formed in the gaseous outlets 31a, 31b, and 31c formed far from the inflator 10 among the 33a and 33b.

In detail, the airbag cushion 20 is formed with a plurality of gas chambers 22, 24, and 26, which are spaces in which gas expands. The plurality of gas chambers 22, 24, and 26 may include a first gas chamber 22 formed at a front side, a second gas chamber 24 formed at a rear side from the first gas chamber 22, and a second gas chamber 24. And a third gas chamber 26 formed rearward from the.

When the airbag cushion 20 is deployed, the first gas chamber 22 and the second gas chamber 24 face the passenger sitting in the front seat, that is, the passenger sitting in the driver's seat or the passenger seat, and the third gas chamber 26. Is opposed to the passenger sitting on the rear seat.

In addition, the plurality of gas outlets 31a, 31b, 31c, 32a, 33a, and 33b are formed in front of the fill hose 30 to discharge gas to the first gas chamber 22. A first gaseous outlet group 31 composed of 31b and 31c and at least one gaseous outlet 32a which is formed rearward from the first gaseous outlet group 31 and discharges gas to the second gas chamber 24; A third gaseous outlet group 32 formed of the second gaseous outlet group 32 and at least one gaseous outlet 33a, 33b which is discharged from the second gaseous chamber 26 to discharge gas into the third gas chamber 26; The gasoline exit group 33 is included. Here, the first gasoline outlet group 31 is illustrated as being composed of three gasoline outlets 31a, 31b, and 31c, and the second gasoline outlet group 32 is illustrated as being composed of one gasoline outlet 32a. The third gaseous outlet group 33 is illustrated as being composed of two gaseous outlets 33a and 33b.

The pressure of the gas flowing through the fill hose 30 decreases as it moves away from the inflator 10. In order to smoothly flow the gas into the first chamber 22 of the airbag cushion 20, the first flow as described above is performed. The gasoline outlet group 31 is preferably composed of a larger number of gasoline outlets than the remaining gasoline outlet groups 32 and 33.

The fill hose 30 is formed with a sewing line 36 sewn in the longitudinal direction, and the sewing line 36 divides the inner space of the fill hose 30 into the main flow passage 34 and the auxiliary flow passage 35. do.

The sewing line 36 is formed to be spaced apart upward from the second gaseous outlet group 32 and the third gaseous outlet group 33, and is not formed at the portion where the first gaseous outlet group 31 is formed.

Accordingly, the gas introduced into the fill hose 30 from the inflator 10 passes through the main flow path 34 to the first gaseous exit group 31, the second gaseous exit group 32, and the third gaseous exit group ( 33 flows into the first chamber 22, the second chamber 24, and the third chamber 26, and flows into the first gas outlet port 31 through the auxiliary flow path 35 to the first chamber. Flows into (22).

In this way, since the gas flows into the first gaseous exit group 31, the second gaseous exit group 32, and the third gaseous exit group 33, the first gaseous exit group 31 is used as the main flow path 34. Since a larger amount of gas must flow than the auxiliary flow passage 35 through which only gas flows, the main flow passage 34 is preferably larger in size than the auxiliary flow passage 35.

The sewing line 36 includes an inclined portion 38 whose tip portion is inclined toward the first gaseous outlet group 31. Therefore, the gas flowing through the auxiliary flow passage 35 flows smoothly to the first gas outlet port 31.

On the other hand, at the end of the sewing line 36 close to the inflator 10, the sewing line 36 is sewn a plurality of times to form a rigid reinforcing portion 37. As shown in FIG. 3, the rigid reinforcement part 37 is stitched a plurality of times in a direction orthogonal to the direction of the sewing line 36, and is illustrated as being sewn three times in this embodiment. Therefore, even if the internal pressure of the fill hose 30 is increased by the gas introduced into the fill hose 30 from the inflator 10, the sewing line 36 may be prevented from being torn off.

As such, the curtain airbag according to the first embodiment of the present invention can secure the amount of gas flowing into the first gas outlet port 31 through the main flow passage 34 and the auxiliary flow passage 35, thereby providing an airbag cushion 20. Since it is possible to increase the amount of gas flowing into the first chamber 22 of), it is possible to prevent the front portion of the airbag cushion 20 from fully deployed.

4 is a cross-sectional view showing a curtain airbag according to a second embodiment of the present invention. Here, the same reference numerals are given to the same as in the above-described embodiment, and description thereof will be omitted, and only differences will be described.

4, it can be seen that the curtain airbag according to the second embodiment of the present invention is different from the above-described embodiment.

That is, the gas introduced into the inside of the fill hose 30 from the inflator 10 passes through the main flow path 34 to the first gaseous exit group 31, the second gaseous exit group 32, and the third gaseous exit group ( 33 flows into the first chamber 22, the second chamber 24 and the third chamber 26, and the first gas outlet group 31 and the second gas outlet through the auxiliary passage 35. Flow into the group 32 flows into the first chamber 22 and the second chamber 24, respectively.

In detail, the fill hose 30 has a portion in which the second gaseous outlet group 32 is formed so that the sewing line 36 is not formed, so that the gas flowing through the auxiliary flow passage 35 is first gaseous outlet group 31. In addition, a flow hole 36a is formed to flow to the second gas outlet group 32.

The sewing line 36 includes not only the inclined portion 38 inclined toward the first gaseous outlet group 31, but also another inclined portion 39 inclined toward the second gaseous outlet group 32. Therefore, the gas flowing through the auxiliary flow passage 35 smoothly flows into the first gaseous outlet group 31 and the second gaseous outlet group 32.

As described above, the curtain airbag according to the second embodiment of the present invention receives the amount of gas flowing into the first gaseous outlet group 31 and the second gaseous outlet group 32 through the main passage 34 and the auxiliary passage 35. It can be secured, so that the amount of gas flowing into the first chamber 22 and the second chamber 24 of the airbag cushion 20 can be increased, thereby preventing the front part of the airbag cushion 20 from being fully deployed. have.

5 is a cross-sectional view showing a curtain airbag according to a third embodiment of the present invention, Figure 6 is a cross-sectional view taken along the line B-B of FIG. Here, the same reference numerals are given to the same as in the above-described embodiment, and description thereof will be omitted, and only differences will be described.

5 and 6, it can be seen that the curtain airbag according to the third embodiment of the present invention is different from the above-described embodiment.

That is, at least one communication hole 36b communicating with the main passage 34 and the auxiliary passage 35 is formed in the sewing line 36. In the present exemplary embodiment, three communication holes 36b are formed.

Therefore, even if the internal pressure of the auxiliary flow passage 35 increases due to the gas introduced into the fill hose 30 from the inflator 10, the gas flows into the main flow passage 34 through the communication hole 36b to provide a plurality of pressures. Since the gas flow outlets 31a, 31b, 31c, 32a, 33a, and 33b flow into the airbag cushion 20, the internal pressure of the auxiliary flow passage 35 can be prevented from being excessively increased, so that the sewing line 36 ) Can be prevented from being torn off.

The communication hole 36b smoothly flows into the inside of the airbag cushion 20 through a plurality of gas outlets 31a, 31b, 31c, 32a, 33a, and 33b, in which gas flows from the auxiliary channel 35 to the main channel 34. It is preferable that the gas outlets 31a, 31b, 31c, 32a, 33a, and 33b are formed at positions parallel to at least one of the gas outlets 31a, 31b, 31c, 32a, 33a, and 33b. In this embodiment, all three communication holes 36b are exemplified as being arranged in parallel with the gaseous outlets 32a, 33a, 33b, respectively.

Looking at the operation of the curtain airbag according to an embodiment of the present invention configured as described above with reference to Figures 1 and 2 as follows.

First, when a vehicle accident occurs, gas is generated in the inflator 10 due to the explosion of a gas generating medium included in the inflator 10, and the gas is introduced into the fill hose 30.

The gas introduced into the fill hose 30 is divided into a main flow passage 34 and an auxiliary flow passage 35 to flow, and the gas flowing through the main flow passage 34 is the first gaseous exit group 31, and the first flow passage. 2 flows into the gaseous outlet group 32 and the third gaseous outlet group 33 and flows into the first chamber 22, the second chamber 24, and the third chamber 26 of the airbag cushion 20, respectively. The gas flowing in the auxiliary flow passage 35 flows into the first gaseous outlet group 31 and flows into the first chamber 22 of the airbag cushion 20.

Therefore, the amount of gas flowing into the first gas outlet outlet group 31 can be secured, so that the amount of gas flowing into the first chamber 22 of the air bag cushion 20 can be increased, so that the front portion of the air bag cushion 20 You can prevent it from fully deploying.

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 showing a curtain airbag according to a first embodiment of the present invention;

2 is a cross-sectional view taken along the line A-A of FIG.

3 is an enlarged view of a portion A divided by a dotted line in FIG. 1;

4 is a cross-sectional view showing a curtain airbag according to a second embodiment of the present invention;

5 is a cross-sectional view showing a curtain airbag according to a third embodiment of the present invention;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5.

10: Inflator 20: Airbag Cushion

22: first chamber 24: second chamber

26: third chamber 30: fill hose

31a, 31b, 31c, 32a, 33a, 33b: gasoline exit 31: first gasoline exit group

32: The 2nd Gusto exit group 33: The 3rd Gusto exit group

34: Main Euro 35: Secondary Euro

36: sewing line 36a: flow hole

36b: Communication hole 37: Rigidity reinforcing part

38, 39: slope

Claims

An airbag cushion deployed between the door and the occupant when gas is introduced;

A fill hose disposed in the air bag cushion, through which a gas generated from an inflator flows; And

And a plurality of gas outlets formed in the fill hose and discharging gas flowing through the fill hose to the air bag cushion.

And the fill hose has a main flow path through which gas flows to the plurality of gas outlets, and an auxiliary flow path through which gas flows into at least one gas outlet outlet formed away from the inflator.

The method according to claim 1,

The airbag cushion includes a plurality of gas chambers, which are spaces that expand when gas is introduced therein, wherein the first gas chamber is formed at the front, the second gas chamber is formed at the rear from the first gas chamber, and the second gas chamber is formed at the rear of the air bag cushion. It is formed including a third gas chamber formed in the rear,

The plurality of gaseous outlets are formed in front of the fill hose, the first gaseous outlet group including at least one gaseous outlet for discharging gas to the first gas chamber, and is formed rearward from the first gaseous outlet group. A second gaseous outlet group including at least one gaseous outlet for discharging gas into a second gas chamber; and at least one gaseous outlet for forming gas from the second gaseous outlet group and discharging gas to the third gas chamber; Including a third gastro exit group,

The main air flows into the first gaseous outlet group, the second gaseous outlet group and the third gaseous outlet group, the gas flows to the first gaseous outlet group, the curtain airbag flows into the first gaseous outlet group.

The method according to claim 1,

The airbag cushion includes a plurality of gas chambers, which are spaces that expand when gas is introduced therein, wherein the first gas chamber is formed at the front, the second gas chamber formed at the rear from the first gas chamber, and the second gas chamber It is formed including a third gas chamber formed in the rear,

Gas flows into the first gaseous exit group, the second gaseous exit group, and the third gaseous exit group as the main flow path, and the auxiliary flow path into the first gaseous exit group and the second gaseous exit group. Curtain air bag with gas flow.

The method according to claim 2 or 3,

The first gasoline outlet group is a curtain air bag consisting of a greater number of gasoline outlets than the rest of the gasoline outlet group.

The method according to claim 1,

The fill hose has a curtain air bag formed with a sewing line for partitioning the main flow path and the auxiliary flow path.

The method according to claim 5,

Curtain airbags formed in the sewing line at least one communication hole for communicating the main flow path and the auxiliary flow path.

The method according to claim 6,

At least one of the at least one communication hole, the curtain air bag formed in parallel with any one of the plurality of gas outlet.

The method according to claim 5,

Curtain end of the sewing line is close to the inflator, the stiffening reinforcement to prevent the sewing line is torn by the internal pressure of the fill hose, the curtain air bag formed by sewing a plurality of times.

The method according to claim 1,

The main air passage has a curtain air bag having a larger size than the auxiliary air passage.

The method according to claim 5,

And the sewing line includes at least one inclined portion formed to be inclined toward at least one gas outlet outlet formed away from the inflator.