KR100551538B1 - Dual air bag system for vehicles - Google Patents

Abstract

The present invention relates to a dual airbag system of a vehicle, and in particular, by applying a dual airbag consisting of a tofu airbag and a chest airbag to control the amount of gas distributed to the tofu airbag and the chest airbag according to the seating state of the passenger, respectively to the optimum inflation pressure An apparatus for inflating an airbag of a vehicle, comprising: a head airbag 110 and a chest airbag 120 provided above and below an inside of an instrument panel 600 of a vehicle; A duct 200 which is branched to communicate with the head bag 110 and the chest bag 120; An inflator (300) provided at the other side of the duct (200) to generate a high pressure gas upon explosion; A flow rate control means 400 provided at the duct 200 to adjust the opening degree of the duct 200; It is connected to the passenger detection means 710 and the collision detection means 720 for detecting the seating state of the passenger, the collision detection means 720 in the seated state of the passenger detected by the passenger detection means 710 when detecting the collision of the vehicle Accordingly, the flow control means 400 is configured to control the inflation pressure of the head bag 110 and the chest air bag 120 independently by the control unit 500, so as to maximize the safety of the passengers.

Tofu airbag, chest airbag, duct, inflator, flow control means, electric motor, opening and closing panel, control unit, instrument panel, passenger detection means, collision detection means

Description

Dual air bag system for vehicles             

1 is a side cross-sectional view showing an airbag system of a conventional vehicle;

2 is a side sectional view showing an airbag system of the vehicle of the present invention;

Fig. 3 shows an example of operation of the airbag system of the vehicle of the present invention.

       Cross Section,

4 shows flow control means for an airbag system of the vehicle of the present invention.

       Degree.

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

110: tofu air bag 120: chest air bag

200: duct 300: inflator

400: flow control means 410: electric motor

420: opening and closing panel 500: control unit

600: instrument panel 710: passenger detection means

720: collision detection means 800: cowl cross bar

The present invention relates to a dual airbag system of a vehicle, and in particular, by applying a dual airbag consisting of a head airbag and a chest airbag to control the amount of gas to be distributed to the headbag and chest airbag according to the seating state of the passengers to each of the optimum inflation pressure An apparatus for inflating an airbag, and relates to an apparatus capable of maximizing passenger safety.

In general, the vehicle is provided with an airbag in which the chamber is operated and inflated by the explosion of the inflator, the airbag is inflated in the event of various collisions of the vehicle, the head and chest of the passengers are forward to the front and hit the car body directly to increase the injury value It is preventing.

1 is a side sectional view showing an airbag system of a conventional vehicle.

As shown in FIG. 1, an airbag system of a conventional vehicle includes an airbag 10 provided in an instrument panel 50 of a vehicle; A duct 20 formed in communication with the air bag 10; An inflator (30) provided at the other side of the duct (20) to generate a high pressure gas upon explosion; It is connected to the collision detection means 60, the collision detection means 60 is composed of a control unit 40 for controlling the explosion of the inflator 30 when detecting the collision of the vehicle.

In this case, reference numeral 70 denotes a cowl cross bar.

In the conventional airbag system of the vehicle configured as described above, as shown in FIG. 1, when the collision detection means 60 detects a collision of the vehicle when a collision accident of the vehicle occurs, the controller 40 controls the inflator 30. It is to be exploded, and the resulting explosive gas is sent to the duct 20 to inflate the air bag 10 folded in the instrument panel 50.

Therefore, in the conventional airbag system of the vehicle, when the collision detection means 60 detects a collision when a vehicle accident occurs, the controller 40 inflates the airbag 10, whereby the head or chest of the passenger collides directly with the vehicle body. It is possible to reduce the injury value of the passengers generated.

However, in the conventional airbag system, the airbag inflation pressure is increased because a single airbag expands to a constant inflation pressure corresponding to the head and chest regardless of the occupant's seating state according to whether the vehicle is collided by the collision detection sensor. There was a technical problem that the excess or incomplete does not effectively reduce the head and chest injury of the passengers.

The present invention is to solve the above problems, according to the seating state of the passenger to the head and chest provided on the top and bottom of the instrument panel to expand the optimal inflation pressure respectively to effectively absorb the impact on the head and chest of the passenger It is possible to provide a dual airbag system for a vehicle that can maximize passenger safety.                         

The present invention includes a head and air chest encyclopedia provided on the upper and lower inside the instrument panel of the vehicle; A duct branched to communicate with the head bag and the chest bag; An inflator provided on the other side of the duct to generate a high pressure gas during explosion; A flow rate control means provided at the duct stop to adjust an opening degree of the duct; It is connected to a passenger detection means and a collision detection means for detecting a seating state of a passenger, the flow control means to control the flow control means according to the seating state of the passenger detected by the passenger detection means when the collision detection means detects a collision of the vehicle It is achieved by configuring the control unit to independently control the inflation pressure of the chest bag.

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

Fig. 2 is a side sectional view showing an airbag system of the vehicle of the present invention, Fig. 3 is a side sectional view showing an example of operation of the airbag system of the vehicle of the present invention, and Fig. 4 is a view of the airbag system of the vehicle of the present invention. It is a figure which shows a flow control means.

Dual airbag system of the vehicle of the present invention, as shown in Figures 2 to 4, the head airbag 110 and the chest airbag 120 provided in the upper and lower inside the instrument panel 600 of the vehicle; A duct 200 which is branched to communicate with the head bag 110 and the chest bag 120; An inflator (300) provided at the other side of the duct (200) to generate a high pressure gas upon explosion; A flow rate control means 400 provided at the duct 200 to adjust the opening degree of the duct 200; It is connected to the passenger detection means 710 and the collision detection means 720 for detecting the seating state of the passenger, the collision detection means 720 detects the seating state of the passenger detected by the passenger detection means 710 when the collision of the vehicle is detected. According to the technical feature that the flow control means 400 is configured by a control unit 500 to independently control the inflation pressure of the head bag 110 and the chest air bag 120.

Hereinafter, the operation of the present invention will be described with reference to FIGS. 2 to 4.

In the dual airbag system of the vehicle of the present invention configured as described above, as shown in Figure 2, the head airbag 110 and the chest airbag 120 to correspond to the head and chest of the passenger, respectively, the upper and lower of the instrument panel 600 Is provided in, the both sides of the duct 200 is branched in the approximately 'Y' shape in order to send the explosive gas to the tofu airbag 110 and chest airbag 120 is formed in communication, the duct 200 ) Is preferably supported by a cowl crossbar 800 located at the center.

And, the other side of the duct 200 is provided with an inflator 300 for generating an explosive gas for inflating the air bag in accordance with the explosion, the head duct 200 and chest air bag 120 to stop the duct 200 after branching Flow rate control means 400 for controlling the inflation pressure of the head airbag 110 and the chest airbag 120 by controlling the flow rate of the explosion gas sent to the) is provided.

At this time, the flow control means 400 is applicable to various embodiments that can control the flow rate of the explosion gas sent to each air bag through the duct 200, the flow control means 400 in the present invention A suitable embodiment for the present invention is, as shown in Figure 4, the electric motor 410 provided to the outside of the duct 200, and connected to the output shaft of the electric motor 410 and at the same time located in the duct 200 while rotating the duct ( It is preferable that the opening and closing panel 420 for controlling the opening degree of the 200.

That is, the opening and closing panel 420 formed in the cross-sectional shape of the duct 200 is provided inside the duct 200 and the electric motor 410 for rotating the opening and closing panel 420 is provided outside the duct, The opening and closing panel 420 acts as a variable resistance in the duct 200 according to the output shaft rotation angle of 410, thereby controlling the flow rate of the explosion gas passing through the duct 200.

As the flow control means 400 narrows or completely seals the cross section of the duct 200 as described above, the explosion gas is proportional to the area of the reduced cross section so that the flow control means 400 is not provided with the flow control means 400. The flow path is switched to the 200 side.

For example, in the case of the flow control means 400 provided at the interruption of the duct 200 communicated with the chest air bag 120 as shown in Figure 2, the electric motor 410 of the flow control means 400 is rotated When the opening and closing panel 420 completely closes the duct 200, the explosion gas generated by the explosion of the inflator 300 is sent to the head of the airbag 110.

Therefore, the flow rate control means 400 controls the flow rate of the explosion gas sent to the head airbag 110 and the chest airbag 120 communicating with both sides of the duct 200 to the head airbag 110 and chest airbag ( Each 120 can be inflated independently to an appropriate expansion pressure.

In addition, the inflator 300 and the flow control means 400 is connected to the control unit 500, the control unit 500 controls the explosion of the inflator 300, and through the flow control means 400 The expansion pressure may be adjusted by appropriately controlling the flow rate of the explosion gas sent to the head airbag 110 and the chest airbag 120.

At this time, the control unit 500 is connected to the passenger detection means 710 for detecting the seating state of the passenger and the collision detection means 720 for detecting whether the vehicle is in conflict, the collision detection means 720 is a vehicle When detecting whether the collision of the control unit 500 to explode the inflator 300, at the same time, the control unit 500 according to the seating state of the passengers obtained through the passenger detection means 710 to the tofu bag ( The optimum inflation pressure of 110 and the inflation pressure of the chest airbag 120 are calculated separately.

Thereafter, the control unit 500 controls the flow control means 400 so that the head airbag 110 and the chest airbag 120 can be inflated at an optimum inflation pressure corresponding to the head and chest of the passenger, respectively. As the electric motor 410 and the opening and closing panel 420 of the flow control means 400 is rotated at an optimal angle, the explosion is sent to the head bag 110 and the chest bag 120 as shown in FIG. By properly distributing the gas, the gas is inflated to the optimal inflation pressure to minimize the occupant's head and chest injuries.

In this case, the passenger detecting means 710 detects the seating state of the passenger, and comprehensively detects the forward and backward positions of the seat or the reclining angle of the seatback, as well as the weight of the passenger, and transmits the data to the control unit 500 as an electrical signal. You will be informed.

Therefore, the dual airbag system of the vehicle of the present invention, the head airbag 110 and the chest airbag 120 provided above and below the instrument panel 600 through the inflator 300 and the flow control means 400 according to the seating state of the passenger. Since it can be inflated to the optimum inflation pressure corresponding to the head and chest of the passenger, the head and chest injury of the passenger can be independently minimized to maximize the passenger safety.

According to the present invention as described above, according to the seating state of the passengers, the head and chest air bags provided above and below the instrument panel can be inflated at optimal inflation pressure, respectively, so that the impact on the head and chest of the passenger can be effectively absorbed. It is an invention that can maximize.

Claims (3)

Tofu air bag and chest air encyclopedia provided above and below the instrument panel of the vehicle; A duct branched to communicate with the head bag and the chest bag; An inflator provided on the other side of the duct to generate a high pressure gas during explosion; A flow rate control means provided at the duct stop to adjust an opening degree of the duct; It is connected to a passenger detection means and a collision detection means for detecting a seating state of a passenger, the flow control means to control the flow control means according to the seating state of the passenger detected by the passenger detection means when the collision detection means detects a collision of the vehicle Dual airbag system of the vehicle, characterized in that consisting of a control unit for independently adjusting the inflation pressure of the chest airbag. The dual airbag of claim 1, wherein the flow control means comprises an electric motor provided outside the duct and an opening / closing panel which is connected to the output shaft of the electric motor and simultaneously rotates in the duct to control the opening degree of the duct. system. The method of claim 1, wherein the passenger detecting means detects the seating state of the passenger, and comprehensively detects the forward and backward positions of the seat, the reclining angle of the seatback, the weight of the passenger, and the like, and informs the controller of such data as an electrical signal. Dual airbag system of a vehicle, characterized in that.

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