KR20060088208A - Curtain air bag for automobile - Google Patents

Abstract

The present invention relates to a curtain airbag for a vehicle, which is mounted inside the pillar trim of a vehicle body along a roof side rail of the vehicle, and includes a curtain bag (10) in which gas is introduced and expanded therein, and an impact generated from the outside of the vehicle body is When the sensing device is configured to be operated by the inflator 20 to introduce the explosion gas into the curtain bag 10, the curtain bag 10 is expanded while the explosion gas generated in the inflator 20 is introduced to the interior of the vehicle body The main bag 11 deployed to cover the side and the guide gas chamber 12a introduced first before the explosive gas generated in the inflator 20 flows into the main bag 11 are formed at intervals. As the gas flows into the guide gas chamber 12a, the main bag 11 is drawn out of the pillar trim 1 and is formed of a guide bag 12 that is deployed downward. The air bag is first supplied to the guide pouch 12 by the expansion of the guide pouch 12, and the main pouch 11 is drawn out to the outside of the pillar trim 1 by the expansion of the guide pouch 12, and then the main pouch 11 is opened from the inflator 20. By expanding the release of air pressure into the inside), the air to expand the main pocket 11 can be easily and quickly entered.

Therefore, the curtain airbag operates to prevent the pillar trim 1 from being damaged, damaged or malfunctioned, as well as to rapidly inflate the main pocket 11 that cushions the occupant's shock, thereby protecting the occupant's safety.

In addition, it is not necessary to install a separate bracket or trim guide in the vehicle body to smoothly deploy the curtain airbag, thereby reducing the number of parts and processes.

Therefore, it is a very useful invention that can increase the safety and economics of the vehicle by improving the operability of the curtain airbag.

Description

Curtain Air Bag for Automobile {Curtain Air Bag for Automobile}             

1 is a cross-sectional view showing a conventional curtain bag

Figure 2 is a schematic diagram showing the mounting state of a general curtain airbag

Figure 3 is a cross-sectional view showing a curtain bag of the present inventors curtain air bag

* Description of the major symbols in the drawings *

1: pillar trim 10: curtain pocket

11: main pocket 12: guide pocket

20: inflator

The present invention relates to a curtain airbag for an automobile, and more particularly, the curtain airbag is invented so that the deployment section can be easily operated by securing a wide range of deployment.

Airbags are typically installed in the center of the steering wheel or inside the instrument panel in front of the front passenger seat to protect the upper body and face of the driver and front passenger in the event of a crash.

Such airbags protect drivers and passengers against accidents in the event of a frontal collision, but the roof side rails are severely deformed during side collisions, which increases the amount of interior airflow. There was a problem that the injury caused by this could not be protected.

In order to solve this problem, recently, curtain airbags are installed on the roof side rails of the vehicle to cover the sides of the inside of the vehicle while the curtain airbags are unfolded during a side collision to protect the driver and the passenger's body.

The curtain airbag is configured by connecting the inflator that receives gas from the curtain bag, which is inflated by gas flow, or directly connected to an inflator that generates gas by receiving a signal from the ECU. Gas exploded in the inflator flows into the curtain bag and is operated by inflating the curtain bag.

As shown in FIG. 1, the curtain bag 10 is installed along the roof side rail and has a length that can cover the interior inner surface of the vehicle, and the gas chamber 11a through which the gas is introduced is divided by a plurality of partitions. Gas is exploded in the inflator in the event of a crash is partitioned and is expanded while sequentially entering the compartment gas chamber (11a).

And the curtain bag 10 is to expand the head lining and pillar trim with the force to be expanded to expand the gap.

However, the conventional curtain air bag has a problem in that the pillar is broken by applying a lot of force to the trim at the same time as the curtain bag is filled with gas and the curtain bag is opened while opening the trim with the curtain bag.

In addition, since the curtain bag is expanded inside the pillar to expand the pillars, when the expansion between the pillar and the vehicle body, a development path for guiding the curtain bag downward is required, and a separate bracket or There was a hassle to mount a trim guide.

And because of the same reason that the failure of the curtain bag does not operate smoothly when an accident occurs, the injury value of the occupant is not reduced, and when the end hits the sharpened trim, the injury value is rather increased end.

An object of the present invention is to equip the curtain bag with a guide pocket for unfolding the curtain bag while spreading the trim inside the curtain bag can secure the deployment space in advance when the curtain bag will be deployed in advance can quickly and quickly deploy the curtain bag To provide an automotive curtain airbag.

Another object of the present invention is to eliminate the need to install a separate bracket or trim guide for guiding the development of the curtain bag can reduce the number of parts and processes, thereby reducing the weight of the vehicle body, and when the curtain bag deployed The present invention provides a curtain airbag for automobiles that can prevent breakage.

An object of the present invention is mounted to the inside of the pillar trim of the interior of the vehicle body along the roof side rail of the vehicle, the curtain bag 10 in which gas is introduced and expanded therein;

In the configuration of the inflator 20 is activated when the impact generated from the outside of the vehicle body is introduced to the explosion gas into the curtain bag 10,

The curtain bag 10 is the main bag (11) that is expanded to cover the interior side of the vehicle body is expanded as the explosion gas generated in the inflator 20 is introduced;

Before the explosive gas generated in the inflator 20 flows into the main bag 11, a plurality of guide gas chambers 12a introduced first are formed at intervals, and as the gas flows into the guide gas chamber 12a, the main bag ( 11) is achieved by consisting of a guide pocket (12) for drawing out the pillar trim (1) to expand to the bottom.

That is, when the impact is generated in the vehicle and the inflator 20 is operated by the collision sensor, the inflator 20 primarily injects the explosive gas into the guide bag 12 to introduce the gas into the guide gas chamber 12a. The bag 11 is pulled out of the pillar trim 1 and developed.

In addition, the inflator 20 expands the main pocket 11 by introducing an explosive gas into the inflator 20 while the main pocket 11 is deployed.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.

Figure 2 is a schematic diagram showing the mounting state of a general curtain airbag, showing that the curtain bag and the inflator are mounted inside the pillar trim, respectively.

3 is a cross-sectional view showing a curtain bag of the curtain air bag of the present invention, showing that the guide bag is provided inside the main bag.

Hereinafter, as shown in FIG. 2, the curtain airbag is mounted inside the pillar trim 1 of the vehicle, and the gas generated by the inflator 20 and the inflator 20 that detects an impact and explodes the gas are detected. It is composed of a curtain bag 10 that is introduced and expanded to cover the interior side of the vehicle, it turns out that the same as the conventional configuration.

The greatest feature of the present invention is to have a structure in which gas is sequentially applied to deploy the curtain bag 10 in the inflator 20.

And the curtain bag 10 has a length sufficient to be mounted over the entire along the roof side rail of the vehicle as shown in Figure 3, the gas chamber 11a in which the gas generated in the inflator 20 is sequentially introduced The main pocket 11 divided into a plurality of partitions by this partition, and the guide pocket to be expanded before the main pocket 11 is expanded to draw the main pocket 11 out of the pillar trim 1 to be unfolded ( 12).

The main bag 11 has a main gas supply passage 11b communicating with the gas chamber 11a to an upper portion of the gas chamber 11a, and the main gas supply passage 11b is connected to the inflator 20 to inflator. The gas supplied from 20 is sequentially introduced into each gas chamber 11a while moving along the main gas supply passage 11b.

In addition, the guide bag 12 has a primary gas supply passage 12b formed through the main gas supply passage 11b in a longitudinal direction, and is connected to the primary gas supply passage 12b. A guide gas chamber 12a extending downward is formed at regular intervals.

The guide gas chamber 12a is expanded when gas is introduced, and its inner size is smaller than the size of the gas chamber 11a of the main bag 11.

In addition, the inflator 20 is configured to supply air pressure primarily to the guide bag 12 and to supply secondary and tertiary air pressures through the main gas supply passage 11b.

That is, when the vehicle is overturned or a side collision accident occurs, the sensor detects this and operates the inflator 20. The inflator 20 primarily supplies air pressure to the guide pocket 12 to provide a primary gas supply passage ( Air is introduced into each of the guide gas chambers 12a through 12b) to expand the guide gas chambers 12a.

The guide gas chamber 12a has a smaller amount of expansion than the gas chamber 11a of the main bag 11, so that the force applied to the pillar trim 1 at the time of expansion is smaller, and the pillar trim 1 is slightly opened.

As the pillar trim 1 is slightly opened by the guide pocket 12, the guide pocket 12 is expanded and deployed under the pillar trim 1, and as the guide pocket 12 is unfolded, the pillar trim is rolled up. (1) The main pocket 11 installed inside is spread out accordingly.

Then, in the state in which the main pocket 11 is drawn out to the outside of the pillar trim 1 and developed, the secondary air pressure flows from the inflator 20 through the main gas supply passage 11b and is supplied to each gas chamber 11a. The pocket 11 is to be inflated enough to buffer.

In addition, the inflator 20 introduces secondary air pressure through the main gas passage, and then introduces tertiary air pressure through the main gas passage as necessary to gradually secure the deployment space when the main pocket 11 is expanded. It can be expanded and expanded smoothly.

Therefore, before the main pocket 11 is fully inflated, the small size of the expanded guide pocket 12 is expanded and the main pocket 11 is not damaged between the vehicle body and the pillar trim 1 without damaging the pillar trim 1. Since it will be spread and spread smoothly while opening, it is possible to secure a deployment space in which the main pocket 11 is deployed.

According to the configuration of the present invention, by supplying the air pressure to the guide bag in the inflator primarily by expanding the guide pocket by the main pocket is drawn out to the outside of the pillar trim by the expansion of the inflator by releasing the air pressure into the main pocket by expanding The air that inflates the main pocket will be able to enter easily and quickly.

Therefore, it is possible to protect the safety of the occupants by rapidly inflating the main pocket that cushions the occupant's shock as well as preventing the pillar trim from being damaged, damaged or malfunctioned while the curtain airbag is operating.

In addition, it is not necessary to install a separate bracket or trim guide in the vehicle body to smoothly deploy the curtain airbag, thereby reducing the number of parts and processes.

Therefore, it is a very useful invention that can increase the safety and economics of the vehicle by improving the operability of the curtain airbag.

Claims (3)

A curtain bag 10 mounted inside the pillar trim of the vehicle body along the roof side rail of the vehicle, the gas being introduced and expanded therein; In the configuration of the inflator 20 is activated when the impact generated from the outside of the vehicle body is introduced to the explosion gas into the curtain bag 10, The curtain bag 10 is the main bag (11) that is expanded to cover the interior side of the vehicle body is expanded as the explosion gas generated in the inflator 20 is introduced; Before the explosive gas generated in the inflator 20 flows into the main bag 11, a plurality of guide gas chambers 12a introduced first are formed at intervals, and as the gas flows into the guide gas chamber 12a, the main bag ( 11) The curtain airbag for automobiles, characterized in that consisting of a guide pocket (12) for pulling out to the outside of the pillar trim (1). The gas pocket 11a of claim 1, wherein the main bag 11 is divided into a plurality of gas chambers 11a through which a gas generated in the inflator 20 is sequentially introduced by partitions, and the gas chambers 11a are located above the gas chambers 11a. The main gas supply passage (11b) is formed to communicate with each other, the guide bag 12 has a primary gas supply passage (12b) formed through the longitudinal direction of the main gas supply passage (11b) is formed on the top And a guide gas chamber (12a) having a predetermined interval therebetween extending downwardly in connection with the primary gas supply passage (12b) and having a smaller internal size than the gas chamber (11a). The method of claim 1, wherein the inflator 20 is configured to supply air pressure to the guide bag 12 primarily, and to sequentially supply the secondary and tertiary air pressure to the main gas bag (11) Car curtain airbags.

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