KR102366814B1 - Curtain air bag and deployment method of curtain air bag - Google Patents

Abstract

A curtain airbag is provided that can be deployed into the cabin without being caught on the pillar trim.
To this end, in the curtain airbag according to the embodiment of the present invention, after the guide part is separated from the cushion part by the expansion force of the push part and disposed on the upper side of the pillar trim, the cushion part is folded and the guide part is the guide part by the expansion force of the push part in the folded state. Go into the cabin through the upper side and start the deployment.

Description

CURTAIN AIR BAG AND DEPLOYMENT METHOD OF CURTAIN AIR BAG

The present invention relates to a curtain airbag and a method for deploying the curtain airbag, and more particularly, to a curtain airbag and a method for deploying the curtain airbag which are installed long in front and rear on the side of a vehicle.

In general, curtain airbags are installed on the left and right sides of a vehicle, respectively. In more detail, the curtain airbag is installed on a side inner panel disposed on the upper side of the vehicle in the front-rear direction of the vehicle.

A front door and a rear door for passengers to get on and off are arranged on the side of the vehicle, an A pillar is arranged long in front and rear above the front door, and a C pillar is located above the rear door. is disposed long in the front and rear, and B pillars are vertically disposed between the front door and the rear door. In addition, pillar trims, which are decorative materials for covering the A pillar, the B pillar, and the C pillar, are disposed in the interior of the vehicle.

The curtain airbag is coupled to an inflator that generates a gas, and is inflated and deployed when the gas generated by the inflator is introduced. The curtain airbag is deployed from top to bottom in the event of an accident of the vehicle, and is disposed between the door of the vehicle and the head of an occupant to protect the head of the occupant.

However, when the curtain airbag is deployed, there is a risk that the curtain airbag is caught on the pillar trims and cannot be deployed into the vehicle compartment. In order to prevent this, a guider called a ramp for guiding the curtain airbag into the vehicle cabin is also installed near the pillar trims.

However, in recent automobiles, there is a problem in that the space for installing the guider is becoming narrower in order to improve the design and secure the space in the vehicle cabin, and when the guider is installed, the man-hours and material cost increase.

SUMMARY OF THE INVENTION An object of the present invention is to provide a curtain airbag that can be deployed into a vehicle interior without being caught on a pillar trim and a method of deploying the curtain airbag.

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

In order to achieve the above object, a curtain airbag according to an embodiment of the present invention includes a cushion part that is inflated and deployed into a vehicle when gas is introduced, and a cushion part that is inflated when gas is introduced and pushes the cushion part into the vehicle interior through an upper side of a pillar trim. The interior includes a push unit and a guide unit disposed above the pillar trim by the expansion force of the push unit to guide the cushion unit into the vehicle compartment so that the cushion unit is pushed by the push unit and moved into the vehicle compartment.

In addition, the curtain airbag according to the embodiment of the present invention is a curtain airbag mounted on a vehicle body and disposed above a pillar trim, and includes a cushion part that is folded into a predetermined shape, inflated when gas is introduced, and deployed into a vehicle interior; a push unit that is folded from the cushion unit and disposed between the folded cushion unit and the vehicle body, expands when gas is introduced and pushes the folded cushion unit into the vehicle compartment through the upper side of the pillar trim; A guide part coupled to the cushion part and disposed above the pillar trim by the expansion force of the push part to guide the folded cushion part into the vehicle compartment so that the folded cushion part is pushed by the push part and moved into the vehicle cabin. do.

In addition, the method for deploying a curtain airbag according to an embodiment of the present invention includes a cushion unit folded into a predetermined shape, a push unit folded from the cushion unit and disposed between the folded cushion unit and a vehicle body, and folded from the push unit. A method of deploying a curtain airbag having a guide part that is folded and coupled to the cushion part, the first step of inflating the push part, and the guide part is separated from the folded cushion part by the expansion force of the push part and disposed above a pillar trim a third step in which the folded cushion part is pushed into the vehicle cabin through an upper side of the guide part by the expansion force of the push part; and a fourth step in which the folded cushion part is expanded and deployed.

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

In the curtain airbag and curtain airbag deployment method according to the present invention, since the cushion part protecting the occupant is pushed by the push part in a folded state, and comes out into the vehicle cabin through the upper side of the pillar trim and then deployed, the cushion part is attached to the pillar trim There is an effect that can be deployed into the vehicle compartment without being caught.

In addition, a guide part is disposed above the pillar trim to guide the folded cushion part into the vehicle cabin so that the cushion part is pushed by the push part in a folded state and exits into the vehicle cabin through the upper side of the pillar trim. There is also an effect that it is not necessary to install a separate structure for guiding the cushion part into the vehicle cabin near the pillar trim.

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

1 is a view showing a vehicle in which a curtain airbag according to an embodiment of the present invention is installed;
2 is a view showing a state in which a curtain airbag according to an embodiment of the present invention is installed in a vehicle;
3 is a cross-sectional view taken along line AA of FIG. 2;
4 is a side view showing a curtain airbag according to an embodiment of the present invention;
5 and 6 are views showing a process in which a curtain airbag is deployed according to an embodiment of the present invention;
7 is a flowchart according to a method for deploying a curtain airbag according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention pertains. It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, a curtain airbag and a curtain airbag deployment method according to an embodiment of the present invention will be described with reference to the drawings.

1 is a view showing a car in which a curtain airbag according to an embodiment of the present invention is installed, FIG. 2 is a view showing a state in which a curtain airbag is installed in a car according to an embodiment of the present invention, and FIG. is a cross-sectional view.

1 to 3 , the curtain airbag device 100 including the curtain airbag 10 according to the embodiment of the present invention is mounted on the upper side of the vehicle 1 in the longitudinal direction in the front-rear direction.

A front door 2 and a rear door 3 are provided on the side of the vehicle 1 for passengers (referring to both a driver and a passenger) to get on and off. On the upper side of the front door 2, A pillars 4 are arranged long in front and back, and on the upper side of the rear door 3, C pillars 5 are arranged long in front and back, and the front door 2 ) and the rear door 3, B Pillars (not shown) are vertically arranged long. In addition, pillar trims 9a, which are decorative materials for covering the A-pillar, B-pillar, and Sea-pillar, are disposed in the vehicle interior of the vehicle 1 .

The curtain airbag device 100 is long mounted on the side inner panel 6 disposed inside the A-pillar 4 and the Sea-pillar 5 in the front-rear direction, and is disposed above the pillar trims 9a. Hereinafter, the side inner panel 6 will be described as the vehicle body 6 .

The curtain airbag device 100 includes an inflator 20 that generates gas, and a curtain airbag 10 that is connected to the inflator 20 and expands and deploys when the gas generated from the inflator 20 is introduced to protect the head of the occupant. ) is included.

After the curtain airbag 10 is folded into a predetermined shape and sealed in the airbag cover 30, the curtain airbag 10 is attached to the vehicle body 6 disposed inside the A-pillar 4 and the Sea-pillar 5 through a fastening member 7 is mounted A plurality of mounting tabs 15 are formed on the upper end of the curtain airbag 10 to be mounted on the vehicle body 6 through the fastening member 7 . After the curtain airbag 10 is sealed in the airbag cover 30, the mounting tab 15 exits to the upper side of the airbag cover 30 through the hole formed in the airbag cover 30, and through the fastening member 7 It can be mounted on the vehicle body 6 . Here, a line torn by the inflation force of the curtain airbag 10 is formed in the airbag cover 30 , so that the curtain airbag 10 may tear the airbag cover 30 while inflated.

The curtain airbag device 100 is obscured by the headliner 8 so that it cannot be seen from the inside of the vehicle cabin. Here, the headliner 8 refers to a member made of a textile material that covers the roof panel (not shown) of the vehicle 1 from the inside of the vehicle. The headliner 8 may be bitten by a weather strip 9 disposed at the lower end of the vehicle body 6 to cover the curtain airbag device 100 .

4 is a side view illustrating a curtain airbag according to an embodiment of the present invention.

3 and 4 , the curtain airbag 10 is made of two flexible panels. That is, the curtain airbag may be formed by stitching the perimeters of the two flexible panels together. The curtain airbag 10 includes a cushion unit 12 that expands when gas is introduced and is deployed into the vehicle compartment to protect the occupant's head with cushioning force, and push units 16 and 17 formed at the upper end of the cushion unit 12, , including guide portions 18 and 19 formed on the upper ends of the push portions 16 and 17 .

The cushion part 12 has an internal space 13 that expands when gas is introduced. A gas inlet 11 for supplying gas to the inner space 13 is formed at the upper end of the cushion unit 12 . After the tip of the inflator 20 for generating gas is inserted into the gas inlet 11, a clamp is placed on the outer circumferential surface of the gas inlet 11 to connect the gas inlet 11 and the inflator 20 can do.

The push portions 16 and 17 are folded from the cushion portion 12 and disposed between the cushion portion 12 and the vehicle body 6 . The push units 16 and 17 communicate with the inner space 13 of the cushion unit 12 . The push units 16 and 17 are inflated by the gas introduced from the inner space 13 of the cushion unit 12, and push the cushion unit 12 in the folded state to remove the cushion unit 12 from the pillar trim 9a. Move it into the car cabin through the upper side. That is, since the push units 16 and 17 are disposed between the cushion unit 12 and the vehicle body 6 in a folded state, the push units 16 and 17 receive a repulsive force from the vehicle body 6 when inflated, thereby providing a cushion. It becomes possible to push the part 12 toward the inside of the vehicle interior.

The push units 16 and 17 are positioned close to the gas inlet 11 so that the cushion unit 12 can push the folded cushion unit 12 by inflating it before the cushion unit 12 starts to deploy. It is preferable to be formed on the upper end of the cushion unit (12).

The push units 16 and 17 include a first push unit 16 disposed in the front with respect to the gas inlet 11 and a second push unit 17 disposed at the rear with respect to the gas inlet 11 . includes

The first push unit 16 is formed at a position corresponding to the pillar trim 9a, which is a decoration material that covers the non-pillar from the inside of the vehicle, and the second push unit 17 is a pillar which is a decoration material that covers the sea pillar from the inside of the vehicle. It is formed at a position corresponding to the trim 9a.

The guide portions 18 and 19 are folded from the push portions 16 and 17 so that one end is coupled to the cushion portion 12 . One end of the guide parts 18 and 19 is a cushion part 12 through a thread 14 having a strength that can be broken by the expansion force of the push parts 16 and 17 when the push parts 16 and 17 are inflated. can be coupled to Accordingly, when the push units 16 and 17 are expanded, the guide units 18 and 19 have one end coupled to the cushion unit 12 separated from the cushion unit 12 by the expansion force of the push units 16 and 17 . Thus, it may be disposed on the upper side of the pillar trim 9a.

The guide portions 18 and 19 are disposed on the upper side of the pillar trim 9a, so that when the folded cushion portion 12 is pushed by the push portions 16 and 17 and moved into the vehicle cabin, the guide portions 18 and 19 are attached to the pillar trim 9a. Guide it so that it can be moved into the car cabin without getting caught.

The guide portions 18 and 19 include a first guide portion 18 integrally formed with the first push portion 16 and a second guide portion 19 integrally formed with the second push portion 17 .

The first guide unit 18 is separated from the cushion unit 12 by the expansion force of the first push unit 16 when the first push unit 16 is inflated, and is a pillar, which is a design material that covers the non-pillar from the inside of the vehicle. It is disposed on the upper side of the trim 9a, and the second guide part 19 is separated from the cushion part 12 by the expansion force of the second push part 17 when the second push part 17 is expanded. It is disposed above the pillar trim 9a, which is a design material that covers the sea pillar from the inside of the vehicle. Accordingly, the first guide part 18 and the second guide part 19 can be moved to the inside of the vehicle by pushing the folded cushion part 12 by the first push part 16 and the second push part 17 . At this time, it guides so that it can be moved into the vehicle cabin without being caught on the pillar trims 9a.

The deployment process of the curtain airbag according to the embodiment of the present invention configured as described above will be described below.

5 and 6 are views illustrating a process in which a curtain airbag is deployed according to an embodiment of the present invention, and FIG. 7 is a flowchart according to a method of deploying a curtain airbag according to an embodiment of the present invention.

5 to 7 , the gas introduced into the upper portion of the inner space 13 of the cushion unit 12 through the gas inlet unit 11 is pushed through the push units 16 and 17 formed at the upper end of the cushion unit 12 . ), the push units 16 and 17 are expanded by the gas introduced into the cushion unit 12 (S1). At this time, the airbag cover 30 is torn by the expansion force of the upper portion of the cushion unit 12 and the expansion force of the push units 16 and 17 , and the headliner 8 is detached from the weather strip 9 and opened.

When the push units 16 and 17 are expanded, the guide units 18 and 19 receive a force to be separated from the cushion unit 12 by the expansion force of the push units 16 and 17 . The thread 14 combining the guide parts 18 and 19 with the cushion part 12 is broken by the force trying to separate the guide parts 18 and 19 from the cushion part 12, and accordingly, the guide part 18 , 19) is separated from the folded cushion part 12 by the expansion force of the push parts 16 and 17 and disposed above the pillar trim 9a (S2).

Thereafter, the cushion unit 12 in the folded state is moved toward the inside of the vehicle by the expansion force of the push units 16 and 17, and is pushed out into the vehicle through the upper side of the guide units 18 and 19 (S3).

Thereafter, the folded cushion part 12 starts to be deployed in the vehicle compartment while the lower part is expanded and is deployed from top to bottom (S4). Accordingly, the cushion portion 12 can be deployed into the vehicle cabin without being caught on the pillar trim 9a.

As described above, in the curtain airbag and curtain airbag deployment method according to the present invention, the cushion portion 12 that protects the occupant is pushed by the pushers 16 and 17 in the folded state, so that the upper side of the pillar trim 9a Since it is deployed after exiting into the vehicle compartment through the vehicle, the cushion portion 12 can be deployed into the vehicle compartment without being caught by the pillar trim 9a.

In addition, the guide parts 18 and 19 are provided with the pillar trim 9a so that the cushion part 12 is pushed by the push parts 16 and 17 in a folded state so that it can come out into the vehicle cabin through the upper side of the pillar trim 9a. Since it is disposed on the upper side of the to guide the folded cushion part 12 into the vehicle cabin, there is no need to install a separate structure for guiding the cushion part 12 into the vehicle cabin near the pillar trim 9a.

Those of ordinary skill in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. should be interpreted

6: Bodywork 9a: Pillar trim
10: curtain airbag 11: gas inlet
12: cushion part 16, 17: push part
18,19: guide part

Claims (13)

a cushion part that expands when gas is introduced and is deployed into the vehicle;
a push unit that expands when gas is introduced and pushes the cushion unit into the vehicle cabin through an upper side of the pillar trim; and
a guide part disposed above the pillar trim by the expansion force of the push part to guide the cushion part into the vehicle compartment so that the cushion part is pushed by the push part and moved into the vehicle compartment; and
One end of the guide part is coupled to the cushion part through a thread,
The yarn is made of a strength that can be broken by the expansion force of the push unit,
The guide part is separated from the cushion part by the expansion force of the push part, and is disposed above the pillar trim. The method according to claim 1,
The push unit is a curtain airbag formed on an upper end of the cushion unit. The method according to claim 1,
The guide part is a curtain airbag formed on an upper end of the push part. The method according to claim 1,
The push unit communicates with the inner space of the cushion unit and is inflated by the gas introduced into the inner space. The method according to claim 1,
A gas inlet through which gas is introduced is formed at the upper end of the cushion unit,
The push unit includes a first push unit disposed at the front with respect to the gas inlet and a second push unit disposed at the rear with respect to the gas inlet,
The guide part may include a first guide part integrally formed with the first push part and a second guide part integrally formed with the second push part. A curtain airbag mounted on a vehicle body and disposed above a pillar trim, the curtain airbag comprising:
a cushion part that is folded into a predetermined shape and expands when gas is introduced into the vehicle;
a push unit that is folded from the cushion unit and disposed between the folded cushion unit and the vehicle body, and expands when gas is introduced to push the folded cushion unit into the vehicle compartment through an upper side of the pillar trim; and
The folded cushion part is disposed on the upper side of the pillar trim by the expansion force of the push part so that the folded cushion part can be folded from the push part and coupled to the cushion part, and the folded cushion part can be pushed by the push part and moved into the vehicle compartment. Including; a guide unit for guiding into the interior of the vehicle;
One end of the guide part is coupled to the cushion part through a thread,
The yarn is made of a strength that can be broken by the expansion force of the push unit,
The guide part is separated from the cushion part by the expansion force of the push part, and is disposed above the pillar trim. delete 7. The method of claim 6,
The push unit is a curtain airbag formed on an upper end of the cushion unit. 7. The method of claim 6,
The guide part is a curtain airbag formed on an upper end of the push part. 7. The method of claim 6,
The push unit communicates with the inner space of the cushion unit and is inflated by the gas introduced into the inner space. 7. The method of claim 6,
A gas inlet through which gas is introduced is formed at the upper end of the cushion unit,
The push unit includes a first push unit disposed at the front with respect to the gas inlet and a second push unit disposed at the rear with respect to the gas inlet,
The guide part may include a first guide part integrally formed with the first push part and a second guide part integrally formed with the second push part. A method for deploying a curtain airbag having a cushion unit folded into a predetermined shape, a push unit folded from the cushion unit and disposed between the folded cushion unit and a vehicle body, and a guide unit folded from the push unit and coupled to the cushion unit in,
a first step of expanding the push unit;
a second step in which the guide part is separated from the folded cushion part by the expansion force of the push part and disposed above the pillar trim;
a third step of pushing the folded cushion part into the vehicle cabin through the upper side of the guide part by the expansion force of the push part; and
A fourth step in which the folded cushion part is expanded and deployed;
One end of the guide part is coupled to the cushion part through a thread,
The thread is made of a strength that can be broken by the expansion force of the push part,
The guide part is separated from the cushion part by the expansion force of the push part, and the curtain airbag deployment method is disposed above the pillar trim. 13. The method of claim 12,
In the first step, the curtain airbag deployment method in which the push unit is inflated by the gas introduced into the cushion unit.

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