KR100538509B1 - Separation type curtain air-bag for a vehicle - Google Patents

Abstract

Discrete curtain airbags are disclosed for protecting front and rear passengers of a vehicle independently. The present invention includes a first diffuser disposed over a section extending from a front pillar to a center pillar, a first cushion sealing a predetermined area around the first diffuser, and a second disposed over a section extending from a center pillar to a rear pillar. And a diffuser, a second cushion having a predetermined area around the second diffuser, and a closed portion, an inflator for supplying a working gas to the first and second diffusers, and a control unit for applying an operation signal to the inflator. According to the present invention described above, even if any one of the front seat or the rear seat curtain airbag is disturbed due to the abnormal seating position of the occupant, it is possible to efficiently protect the occupant without affecting the other.

Description

Separation type curtain air-bag for a vehicle}

The present invention relates to a curtain airbag for a vehicle, and more particularly, to a separate curtain airbag for a vehicle to independently protect the front and rear passengers in the room during side collision or overturning of the vehicle.

Recently, as interest in safety of passengers along with functionality and convenience of automobiles is increasing, the importance of safety-related devices that can safely protect passengers in the event of an accident of automobiles is increasing.

Among these safety devices, in particular, airbag systems are used in conjunction with seat belts to prevent passengers from being injured in the event of a frontal or side collision of the vehicle.

Among such airbag systems, curtain airbags (Curtain Air-Bag) is generally installed along the top side of the interior of the vehicle and has a structure that is deployed in the form of curtains when the vehicle crashes, in particular, as well as the side collision of the car It is also effective in overturning accidents, providing a high level of safety for occupants.

1 is a view schematically showing an example of a conventional curtain airbag. As shown in FIG. 1, the curtain airbag fixes an air cushion 10 disposed over a predetermined section along a roof rail 6 of an interior of a vehicle, and fixes the air cushion 10 on the roof rail 6. It includes a cushion holder 14, an opening 22 and a diffuser 20 installed in the air cushion 10 and the inflator 30 coupled to one end of the diffuser 20.

The air cushion 10 communicates with the opening 22 and seals around the diffuser 20 with a predetermined area. In addition, the inflator 30 is in communication with one end of the diffuser 20, the connection portion is tightly closed by being tightened by the clamp 32 in the air cushion 10 is wrapped.

On the other hand, the inflator 30 is electrically connected to a detection sensor (not shown) for detecting a collision of the vehicle, one side of the air cushion 10 is supported on the front pillar (not shown) side of the air cushion 10 A tether 40 is provided to guide the deployment shape correctly during deployment.

According to the above-described configuration, the collision signal detected from the side collision or rollover of the vehicle is received from the control unit to send a control signal corresponding thereto to the inflator 30 to operate the inflator 30.

In this case, the inflator 30 generates a working gas and supplies the gas into the diffuser 20, and the gas introduced into the diffuser 20 flows into the air cushion 10 through the opening 22 in an instant. The air cushion 10 is inflated to a predetermined shape to protect the head of the passenger.

At this time, in order to effectively protect the passengers when the air cushion 10 is fully deployed and the curtain airbag is operated, the internal pressure is normally maintained for a predetermined time (about 6 seconds) while the air cushion 10 is fully inflated. The technical requirements to ensure continued maintenance of the system must be met.

However, the structure of the conventional curtain airbag as described above, because the air cushion 10 is formed continuously over the section from the front pillar (not shown) to the rear pillar (not shown), for example, seated in the front seat of the vehicle If the passenger is located near the window, there is a possibility that a situation may occur that may interfere with the deployment of the air cushion 10 and may injure even the rear seat passenger, and the seat located at the top of the center pillar (not shown). Due to the slip guide of the belt (Slip-Guide), the development of the air cushion 10 is hindered to prevent the smooth cushion development, there was a problem that can not stably protect the passengers in the event of an accident.

In addition, as the air cushion 10 has a relatively large swelling area as described above, since the inflow amount of the working gas must be increased in order to maintain the internal pressure for a predetermined time when the air cushion 10 is inflated 30. There was a problem to increase the used capacity of).

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to install a curtain airbag independently operated through the control unit in the front and rear seats of the car, so that the passengers of the front / rear seats more efficiently and It is to provide a detachable curtain airbag of a car for stable protection.

The detachable curtain airbag of the present invention for achieving the above object comprises a first diffuser disposed over a section leading from the front filler to the center filler; A first cushion having a certain area and sealing around the first diffuser; A second diffuser disposed over a section from the center pillar to the rear pillar; A second cushion having a predetermined area and sealing around the second diffuser; An inflator for supplying a working gas to the first and second diffusers; And a control unit which applies an operation signal to the inflator.

The inflator may include a first inflator installed in the front pillar and a second inflator installed in the rear pillar, and the first and second inflators may be independently controlled by the controller.

The inflator may include a first inflator and a second inflator, and the first and second inflators may be installed in the center pillar to be independently controlled by the controller.

In addition, the inflator may be installed in the center pillar and may simultaneously supply a working gas to the first diffuser and the second diffuser when the airbag is operated.

On the other hand, the first cushion and the second cushion is formed in the non-expansion area is limited to the entry and exit of the working gas is suppressed expansion.

In addition, each area of the first diffuser and the second diffuser positioned at the center pillar is disposed at left and right sides of the seat belt slip guide, respectively.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a view showing a detachable curtain airbag according to an embodiment of the present invention.

As shown, the detachable curtain airbag according to the present invention is the first diffuser 210 and the second diffuser 310, the first and second diffusers 210, 310 are respectively disposed on the front and rear seat upper end of the vehicle. A first cushion 230 and a second cushion 330 respectively accommodating the first and second inflators 250a and the second inflator to generate a working gas to supply the first and second diffusers 210 and 310, respectively. And a controller (not shown) for controlling the first and second inflators 250a and 250b, respectively.

The first diffuser 210 is installed on a roof rail (not shown) that extends from the front pillar 110 of the vehicle to the center pillar 130, and the second diffuser 310 is the center pillar 130. It is installed on the roof rail extending over the section from the back to the rear pillar 150.

At this time, the distal end of the first diffuser 210 and the second diffuser 310 located on the center pillar 130 side seat belt (Seat) during the deployment of the first cushion 230 and the second cushion 330 which will be described later In order not to interfere with the slip guide 170 of the belt, the slip guide 170 may be disposed at left and right sides spaced apart from the slip guide 170 by a predetermined distance.

Meanwhile, the first and second diffusers 210 and 310 have a pipe-shaped cross-sectional structure, and a plurality of openings (not shown) are formed on the outer circumferential surface of the first and second diffusers 210 and 310 at predetermined intervals along the longitudinal direction of the body. have.

In addition, a first inflator 250a is provided on the front pillar 110 to communicate with an end of the first diffuser 210, and a second inflator 250b is installed on the rear pillar 150 to provide a second diffuser ( It is connected to the end of 310).

The first and second inflators 250a and 250b are electrically connected to a controller (not shown), and independent control may be performed through the controller.

On the other hand, the first cushion 230 and the second cushion 330 are sealed with a predetermined area around the first diffuser 210 and the second diffuser 310, respectively.

In this case, the first and second cushions 230 and 330 are provided with non-expansion areas 270 and 370 of a predetermined area, which are suppressed from being expanded when the air bag is operated. As a method of forming the non-expanded areas 270 and 370, simply sewing the target part or by stitching a fabric such as cloth, the expansion of the stitched area may be forcibly limited during the filling of the working gas. You can do that.

As the non-expansion areas 270 and 370 are formed in the first and second cushions 230 and 330 as described above, the first and second cushions 230 and 330 block the access of the working gas to a region that does not directly affect the passenger's buffer. The expansion efficiency of the second cushions 230 and 330 may be maximized, and at the same time, the first and second inflators 250a and 250b may be configured with a smaller capacity.

Although not shown in the drawings, the first and second cushions 230 and 330 may be disposed on the first and second cushions 230 and 330 to properly maintain the deployment shape of the first and second cushions 230 and 330 during the operation of the airbag. Eether (Tether) is provided so that it can be guided to a suitable position of the front pillar 110, center pillar 130, or rear pillar 150.

Hereinafter, the operation relationship of the present invention having the above-described configuration will be described in detail.

First, when an impact is sensed by a collision detection sensor (not shown) during a collision of a vehicle and an electric signal for operating an airbag is applied to the first and second inflators 250a and 250b, the first and second inflators 250a The working gas is generated as the gas generating agent ignited and burned in the inside 250b is supplied to the first and second diffusers 210 and 310, respectively.

The working gas introduced into the first and second diffusers 210 and 310 is discharged into the first and second cushions 230 and 330 through respective openings, and the first and second cushions 230 are formed. The 330 is expanded by a predetermined area while being partially inflated by the non-expanded regions 270 and 370 to cushion the occupant's head.

On the other hand, Figure 3 shows another embodiment of the present invention, unlike the case of the embodiment of FIG. 2 described above, the first inflator 250a and the second inflator 250b are located on the center pillar 130 side of the vehicle. It is configured to be deployed. When configured in this way, a large amount of free space is secured on the front pillar 110 or the rear pillar 150 so that design changes thereof can be made more freely, and the first and second inflators 250a and 250b are related. Since parts are integrated and configured on the center pillar 130 side, it is not troublesome even when repairing due to a failure.

In addition, Figure 4 shows another embodiment of the present invention, by arranging one third inflator 250c on the center pillar 130 and connecting it with the first and second diffusers 210,310 The first and second cushions 230 and 330 may be simultaneously deployed in response to the explosion of the third inflator 250c. This configuration has the advantage of simplifying the device configuration compared with the case of employing two inflators.

Other embodiments of the present invention are the same as the configuration and operation of the embodiment shown in FIG. 2 described above except for the installation position and the number of the inflator, and the detailed description thereof will be omitted.

According to the present invention described above, the following effects can be expected.

First, by installing curtain airbags that are independently controlled by the control unit in the front and rear seats of the car, either the front seat or the rear seat curtain airbag does not affect the other, even if it is disturbed due to the abnormal seating position of the passenger. Can effectively protect the occupants.

Second, the size of the cushions of the front and rear seats is significantly reduced compared to the existing integrated curtain airbags, which enables the adoption of a small capacity inflator, and the deployment time of the cushions is shortened when the airbag is operated. By adjusting the pressure, the inner pressure of the cushion can be sufficiently maintained for the required time (about 6 seconds).

Third, if one inflator is installed on the center pillar of the vehicle so that the first and second cushions can be deployed at the same time, a complicated device configuration is unnecessary when two inflators are used. Additional cost increases can also be prevented.

Fourth, it is possible to maximize the expansion efficiency of each cushion by forming a non-expansion area is limited to the entry and exit of the working gas in the first cushion and the second cushion, and at the same time, it is possible to minimize the use of each inflator.

Fifth, each area of the center pillar in the first diffuser and the second diffuser is disposed on the left and right sides of the seat belt slip guide, so that the deployment of the first and second cushions is not hindered by the slip guide. Each cushion can be deployed normally.

Sixth, when changing the shape of the roof rail according to the small-scale face lift of the car, it is necessary to change the design of the curtain airbag because only a part of the front or rear curtain airbag needs to be changed without changing the shape of the curtain airbag as a whole. Will be less affected.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art various modifications of the present invention without departing from the spirit and scope of the invention described in the claims below And can be changed.

1 is a schematic view showing a conventional general curtain airbag.

2 is a view showing a detachable curtain airbag according to an embodiment of the present invention.

3 is a view showing a detachable curtain airbag according to another embodiment of the present invention.

4 is a view showing a detachable curtain airbag according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

110: front pillar 130: center pillar

150: rear filler 170: slip guide

210,310: 1st, 2nd diffuser 230,330: 1st, 2nd cushion

250a, 250b, 250c: 1st, 2nd, 3rd inflator

270,370: unexpanded area

Claims (6)

delete delete A first diffuser disposed over a section from the front pillar to the center pillar; A first cushion having a certain area and sealing around the first diffuser; A second diffuser disposed over a section from the center pillar to the rear pillar; A second cushion having a predetermined area and sealing around the second diffuser; An inflator for supplying a working gas to the first and second diffusers; And It includes a control unit for applying an operation signal to the inflator, The inflator is composed of a first inflator and a second inflator, the first and second inflator is installed in the center pillar is controlled independently by the control unit, End portions of the first diffuser and the second diffuser located on the center pillar side are formed to be disposed on the left and right side spaced apart from the slip guide of the seat belt. A first diffuser disposed over a section from the front pillar to the center pillar; A first cushion having a certain area and sealing around the first diffuser; A second diffuser disposed over a section from the center pillar to the rear pillar; A second cushion having a predetermined area and sealing around the second diffuser; An inflator for supplying a working gas to the first and second diffusers; And It includes a control unit for applying an operation signal to the inflator, The inflator is installed in the center pillar, and the passenger seat airbag for the vehicle characterized in that it is possible to simultaneously supply the operating gas to the first diffuser and the second diffuser when the airbag is operated. delete delete